Mercurial > vim
annotate src/memline.c @ 13928:9b53f97f532c
Added tag v8.0.1834 for changeset ec54a202ad0c5836d59d34225d84bd2f31cc01eb
| author | Christian Brabandt <cb@256bit.org> |
|---|---|
| date | Sun, 13 May 2018 17:15:06 +0200 |
| parents | 4d5a1ada407e |
| children | 8631b54ae2a2 |
| rev | line source |
|---|---|
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commit https://github.com/vim/vim/commit/edf3f97ae2af024708ebb4ac614227327033ca47
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1 /* vi:set ts=8 sts=4 sw=4 noet: |
| 7 | 2 * |
| 3 * VIM - Vi IMproved by Bram Moolenaar | |
| 4 * | |
| 5 * Do ":help uganda" in Vim to read copying and usage conditions. | |
| 6 * Do ":help credits" in Vim to see a list of people who contributed. | |
| 7 * See README.txt for an overview of the Vim source code. | |
| 8 */ | |
| 9 | |
| 10 /* for debugging */ | |
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11 /* #define CHECK(c, s) do { if (c) EMSG(s); } while (0) */ |
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12 #define CHECK(c, s) do { /**/ } while (0) |
| 7 | 13 |
| 14 /* | |
| 15 * memline.c: Contains the functions for appending, deleting and changing the | |
| 625 | 16 * text lines. The memfile functions are used to store the information in |
| 17 * blocks of memory, backed up by a file. The structure of the information is | |
| 18 * a tree. The root of the tree is a pointer block. The leaves of the tree | |
| 19 * are data blocks. In between may be several layers of pointer blocks, | |
| 20 * forming branches. | |
| 7 | 21 * |
| 22 * Three types of blocks are used: | |
| 23 * - Block nr 0 contains information for recovery | |
| 24 * - Pointer blocks contain list of pointers to other blocks. | |
| 25 * - Data blocks contain the actual text. | |
| 26 * | |
| 27 * Block nr 0 contains the block0 structure (see below). | |
| 28 * | |
| 29 * Block nr 1 is the first pointer block. It is the root of the tree. | |
| 30 * Other pointer blocks are branches. | |
| 31 * | |
| 32 * If a line is too big to fit in a single page, the block containing that | |
| 33 * line is made big enough to hold the line. It may span several pages. | |
| 34 * Otherwise all blocks are one page. | |
| 35 * | |
| 36 * A data block that was filled when starting to edit a file and was not | |
| 37 * changed since then, can have a negative block number. This means that it | |
| 38 * has not yet been assigned a place in the file. When recovering, the lines | |
| 39 * in this data block can be read from the original file. When the block is | |
| 40 * changed (lines appended/deleted/changed) or when it is flushed it gets a | |
| 41 * positive number. Use mf_trans_del() to get the new number, before calling | |
| 42 * mf_get(). | |
| 43 */ | |
| 44 | |
| 45 #include "vim.h" | |
| 46 | |
| 47 #ifndef UNIX /* it's in os_unix.h for Unix */ | |
| 48 # include <time.h> | |
| 49 #endif | |
| 50 | |
| 1030 | 51 #if defined(SASC) || defined(__amigaos4__) |
| 7 | 52 # include <proto/dos.h> /* for Open() and Close() */ |
| 53 #endif | |
| 54 | |
| 55 typedef struct block0 ZERO_BL; /* contents of the first block */ | |
| 56 typedef struct pointer_block PTR_BL; /* contents of a pointer block */ | |
| 57 typedef struct data_block DATA_BL; /* contents of a data block */ | |
| 58 typedef struct pointer_entry PTR_EN; /* block/line-count pair */ | |
| 59 | |
| 2267 | 60 #define DATA_ID (('d' << 8) + 'a') /* data block id */ |
| 61 #define PTR_ID (('p' << 8) + 't') /* pointer block id */ | |
| 62 #define BLOCK0_ID0 'b' /* block 0 id 0 */ | |
| 63 #define BLOCK0_ID1 '0' /* block 0 id 1 */ | |
| 64 #define BLOCK0_ID1_C0 'c' /* block 0 id 1 'cm' 0 */ | |
| 65 #define BLOCK0_ID1_C1 'C' /* block 0 id 1 'cm' 1 */ | |
| 6122 | 66 #define BLOCK0_ID1_C2 'd' /* block 0 id 1 'cm' 2 */ |
| 67 | |
| 68 #if defined(FEAT_CRYPT) | |
| 69 static int id1_codes[] = { | |
| 70 BLOCK0_ID1_C0, /* CRYPT_M_ZIP */ | |
| 71 BLOCK0_ID1_C1, /* CRYPT_M_BF */ | |
| 72 BLOCK0_ID1_C2, /* CRYPT_M_BF2 */ | |
| 73 }; | |
| 74 #endif | |
| 7 | 75 |
| 76 /* | |
| 77 * pointer to a block, used in a pointer block | |
| 78 */ | |
| 79 struct pointer_entry | |
| 80 { | |
| 81 blocknr_T pe_bnum; /* block number */ | |
| 82 linenr_T pe_line_count; /* number of lines in this branch */ | |
| 83 linenr_T pe_old_lnum; /* lnum for this block (for recovery) */ | |
| 84 int pe_page_count; /* number of pages in block pe_bnum */ | |
| 85 }; | |
| 86 | |
| 87 /* | |
| 88 * A pointer block contains a list of branches in the tree. | |
| 89 */ | |
| 90 struct pointer_block | |
| 91 { | |
| 92 short_u pb_id; /* ID for pointer block: PTR_ID */ | |
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93 short_u pb_count; /* number of pointers in this block */ |
| 7 | 94 short_u pb_count_max; /* maximum value for pb_count */ |
| 95 PTR_EN pb_pointer[1]; /* list of pointers to blocks (actually longer) | |
| 96 * followed by empty space until end of page */ | |
| 97 }; | |
| 98 | |
| 99 /* | |
| 100 * A data block is a leaf in the tree. | |
| 101 * | |
| 102 * The text of the lines is at the end of the block. The text of the first line | |
| 103 * in the block is put at the end, the text of the second line in front of it, | |
| 104 * etc. Thus the order of the lines is the opposite of the line number. | |
| 105 */ | |
| 106 struct data_block | |
| 107 { | |
| 108 short_u db_id; /* ID for data block: DATA_ID */ | |
| 109 unsigned db_free; /* free space available */ | |
| 110 unsigned db_txt_start; /* byte where text starts */ | |
| 111 unsigned db_txt_end; /* byte just after data block */ | |
| 112 linenr_T db_line_count; /* number of lines in this block */ | |
| 113 unsigned db_index[1]; /* index for start of line (actually bigger) | |
| 114 * followed by empty space upto db_txt_start | |
| 115 * followed by the text in the lines until | |
| 116 * end of page */ | |
| 117 }; | |
| 118 | |
| 119 /* | |
| 120 * The low bits of db_index hold the actual index. The topmost bit is | |
| 121 * used for the global command to be able to mark a line. | |
| 122 * This method is not clean, but otherwise there would be at least one extra | |
| 123 * byte used for each line. | |
| 124 * The mark has to be in this place to keep it with the correct line when other | |
| 125 * lines are inserted or deleted. | |
| 126 */ | |
| 127 #define DB_MARKED ((unsigned)1 << ((sizeof(unsigned) * 8) - 1)) | |
| 128 #define DB_INDEX_MASK (~DB_MARKED) | |
| 129 | |
| 130 #define INDEX_SIZE (sizeof(unsigned)) /* size of one db_index entry */ | |
| 131 #define HEADER_SIZE (sizeof(DATA_BL) - INDEX_SIZE) /* size of data block header */ | |
| 132 | |
| 39 | 133 #define B0_FNAME_SIZE_ORG 900 /* what it was in older versions */ |
| 2267 | 134 #define B0_FNAME_SIZE_NOCRYPT 898 /* 2 bytes used for other things */ |
| 135 #define B0_FNAME_SIZE_CRYPT 890 /* 10 bytes used for other things */ | |
| 39 | 136 #define B0_UNAME_SIZE 40 |
| 137 #define B0_HNAME_SIZE 40 | |
| 7 | 138 /* |
| 139 * Restrict the numbers to 32 bits, otherwise most compilers will complain. | |
| 140 * This won't detect a 64 bit machine that only swaps a byte in the top 32 | |
| 141 * bits, but that is crazy anyway. | |
| 142 */ | |
| 143 #define B0_MAGIC_LONG 0x30313233L | |
| 144 #define B0_MAGIC_INT 0x20212223L | |
| 145 #define B0_MAGIC_SHORT 0x10111213L | |
| 146 #define B0_MAGIC_CHAR 0x55 | |
| 147 | |
| 148 /* | |
| 149 * Block zero holds all info about the swap file. | |
| 150 * | |
| 151 * NOTE: DEFINITION OF BLOCK 0 SHOULD NOT CHANGE! It would make all existing | |
| 152 * swap files unusable! | |
| 153 * | |
| 154 * If size of block0 changes anyway, adjust MIN_SWAP_PAGE_SIZE in vim.h!! | |
| 155 * | |
| 1228 | 156 * This block is built up of single bytes, to make it portable across |
| 7 | 157 * different machines. b0_magic_* is used to check the byte order and size of |
| 158 * variables, because the rest of the swap file is not portable. | |
| 159 */ | |
| 160 struct block0 | |
| 161 { | |
| 2267 | 162 char_u b0_id[2]; /* id for block 0: BLOCK0_ID0 and BLOCK0_ID1, |
| 6122 | 163 * BLOCK0_ID1_C0, BLOCK0_ID1_C1, etc. */ |
| 7 | 164 char_u b0_version[10]; /* Vim version string */ |
| 165 char_u b0_page_size[4];/* number of bytes per page */ | |
| 166 char_u b0_mtime[4]; /* last modification time of file */ | |
| 167 char_u b0_ino[4]; /* inode of b0_fname */ | |
| 168 char_u b0_pid[4]; /* process id of creator (or 0) */ | |
| 169 char_u b0_uname[B0_UNAME_SIZE]; /* name of user (uid if no name) */ | |
| 170 char_u b0_hname[B0_HNAME_SIZE]; /* host name (if it has a name) */ | |
| 39 | 171 char_u b0_fname[B0_FNAME_SIZE_ORG]; /* name of file being edited */ |
| 7 | 172 long b0_magic_long; /* check for byte order of long */ |
| 173 int b0_magic_int; /* check for byte order of int */ | |
| 174 short b0_magic_short; /* check for byte order of short */ | |
| 175 char_u b0_magic_char; /* check for last char */ | |
| 176 }; | |
| 39 | 177 |
| 178 /* | |
| 625 | 179 * Note: b0_dirty and b0_flags are put at the end of the file name. For very |
| 39 | 180 * long file names in older versions of Vim they are invalid. |
| 181 * The 'fileencoding' comes before b0_flags, with a NUL in front. But only | |
| 182 * when there is room, for very long file names it's omitted. | |
| 183 */ | |
| 184 #define B0_DIRTY 0x55 | |
| 2267 | 185 #define b0_dirty b0_fname[B0_FNAME_SIZE_ORG - 1] |
| 39 | 186 |
| 187 /* | |
| 188 * The b0_flags field is new in Vim 7.0. | |
| 189 */ | |
| 2267 | 190 #define b0_flags b0_fname[B0_FNAME_SIZE_ORG - 2] |
| 191 | |
| 192 /* | |
| 193 * Crypt seed goes here, 8 bytes. New in Vim 7.3. | |
| 194 * Without encryption these bytes may be used for 'fenc'. | |
| 195 */ | |
| 196 #define b0_seed b0_fname[B0_FNAME_SIZE_ORG - 2 - MF_SEED_LEN] | |
| 39 | 197 |
| 198 /* The lowest two bits contain the fileformat. Zero means it's not set | |
| 199 * (compatible with Vim 6.x), otherwise it's EOL_UNIX + 1, EOL_DOS + 1 or | |
| 200 * EOL_MAC + 1. */ | |
| 201 #define B0_FF_MASK 3 | |
| 202 | |
| 203 /* Swap file is in directory of edited file. Used to find the file from | |
| 204 * different mount points. */ | |
| 205 #define B0_SAME_DIR 4 | |
| 206 | |
| 207 /* The 'fileencoding' is at the end of b0_fname[], with a NUL in front of it. | |
| 208 * When empty there is only the NUL. */ | |
| 209 #define B0_HAS_FENC 8 | |
| 7 | 210 |
| 211 #define STACK_INCR 5 /* nr of entries added to ml_stack at a time */ | |
| 212 | |
| 213 /* | |
| 214 * The line number where the first mark may be is remembered. | |
| 215 * If it is 0 there are no marks at all. | |
| 216 * (always used for the current buffer only, no buffer change possible while | |
| 217 * executing a global command). | |
| 218 */ | |
| 219 static linenr_T lowest_marked = 0; | |
| 220 | |
| 221 /* | |
| 222 * arguments for ml_find_line() | |
| 223 */ | |
| 224 #define ML_DELETE 0x11 /* delete line */ | |
| 225 #define ML_INSERT 0x12 /* insert line */ | |
| 226 #define ML_FIND 0x13 /* just find the line */ | |
| 227 #define ML_FLUSH 0x02 /* flush locked block */ | |
| 228 #define ML_SIMPLE(x) (x & 0x10) /* DEL, INS or FIND */ | |
| 229 | |
| 2267 | 230 /* argument for ml_upd_block0() */ |
| 231 typedef enum { | |
| 232 UB_FNAME = 0 /* update timestamp and filename */ | |
| 233 , UB_SAME_DIR /* update the B0_SAME_DIR flag */ | |
| 234 , UB_CRYPT /* update crypt key */ | |
| 235 } upd_block0_T; | |
| 236 | |
| 237 #ifdef FEAT_CRYPT | |
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238 static void ml_set_mfp_crypt(buf_T *buf); |
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239 static void ml_set_b0_crypt(buf_T *buf, ZERO_BL *b0p); |
| 2267 | 240 #endif |
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241 static int ml_check_b0_id(ZERO_BL *b0p); |
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242 static void ml_upd_block0(buf_T *buf, upd_block0_T what); |
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243 static void set_b0_fname(ZERO_BL *, buf_T *buf); |
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244 static void set_b0_dir_flag(ZERO_BL *b0p, buf_T *buf); |
| 39 | 245 #ifdef FEAT_MBYTE |
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246 static void add_b0_fenc(ZERO_BL *b0p, buf_T *buf); |
| 39 | 247 #endif |
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248 static time_t swapfile_info(char_u *); |
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249 static int recov_file_names(char_u **, char_u *, int prepend_dot); |
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250 static int ml_append_int(buf_T *, linenr_T, char_u *, colnr_T, int, int); |
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251 static int ml_delete_int(buf_T *, linenr_T, int); |
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252 static char_u *findswapname(buf_T *, char_u **, char_u *); |
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253 static void ml_flush_line(buf_T *); |
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254 static bhdr_T *ml_new_data(memfile_T *, int, int); |
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255 static bhdr_T *ml_new_ptr(memfile_T *); |
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256 static bhdr_T *ml_find_line(buf_T *, linenr_T, int); |
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257 static int ml_add_stack(buf_T *); |
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258 static void ml_lineadd(buf_T *, int); |
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259 static int b0_magic_wrong(ZERO_BL *); |
| 7 | 260 #ifdef CHECK_INODE |
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261 static int fnamecmp_ino(char_u *, char_u *, long); |
| 7 | 262 #endif |
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263 static void long_to_char(long, char_u *); |
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264 static long char_to_long(char_u *); |
| 7 | 265 #if defined(UNIX) || defined(WIN3264) |
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266 static char_u *make_percent_swname(char_u *dir, char_u *name); |
| 7 | 267 #endif |
| 2267 | 268 #ifdef FEAT_CRYPT |
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269 static cryptstate_T *ml_crypt_prepare(memfile_T *mfp, off_T offset, int reading); |
| 2267 | 270 #endif |
| 7 | 271 #ifdef FEAT_BYTEOFF |
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272 static void ml_updatechunk(buf_T *buf, long line, long len, int updtype); |
| 7 | 273 #endif |
| 274 | |
| 275 /* | |
| 625 | 276 * Open a new memline for "buf". |
| 7 | 277 * |
| 625 | 278 * Return FAIL for failure, OK otherwise. |
| 7 | 279 */ |
| 280 int | |
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281 ml_open(buf_T *buf) |
| 7 | 282 { |
| 283 memfile_T *mfp; | |
| 284 bhdr_T *hp = NULL; | |
| 285 ZERO_BL *b0p; | |
| 286 PTR_BL *pp; | |
| 287 DATA_BL *dp; | |
| 288 | |
| 625 | 289 /* |
| 290 * init fields in memline struct | |
| 291 */ | |
| 2267 | 292 buf->b_ml.ml_stack_size = 0; /* no stack yet */ |
| 625 | 293 buf->b_ml.ml_stack = NULL; /* no stack yet */ |
| 294 buf->b_ml.ml_stack_top = 0; /* nothing in the stack */ | |
| 295 buf->b_ml.ml_locked = NULL; /* no cached block */ | |
| 296 buf->b_ml.ml_line_lnum = 0; /* no cached line */ | |
| 7 | 297 #ifdef FEAT_BYTEOFF |
| 625 | 298 buf->b_ml.ml_chunksize = NULL; |
| 7 | 299 #endif |
| 300 | |
| 5737 | 301 if (cmdmod.noswapfile) |
| 302 buf->b_p_swf = FALSE; | |
| 303 | |
| 625 | 304 /* |
| 305 * When 'updatecount' is non-zero swap file may be opened later. | |
| 306 */ | |
| 307 if (p_uc && buf->b_p_swf) | |
| 308 buf->b_may_swap = TRUE; | |
| 7 | 309 else |
| 625 | 310 buf->b_may_swap = FALSE; |
| 311 | |
| 312 /* | |
| 313 * Open the memfile. No swap file is created yet. | |
| 314 */ | |
| 7 | 315 mfp = mf_open(NULL, 0); |
| 316 if (mfp == NULL) | |
| 317 goto error; | |
| 318 | |
| 625 | 319 buf->b_ml.ml_mfp = mfp; |
| 2267 | 320 #ifdef FEAT_CRYPT |
| 321 mfp->mf_buffer = buf; | |
| 322 #endif | |
| 625 | 323 buf->b_ml.ml_flags = ML_EMPTY; |
| 324 buf->b_ml.ml_line_count = 1; | |
| 13 | 325 #ifdef FEAT_LINEBREAK |
| 326 curwin->w_nrwidth_line_count = 0; | |
| 327 #endif | |
| 7 | 328 |
| 329 /* | |
| 330 * fill block0 struct and write page 0 | |
| 331 */ | |
| 332 if ((hp = mf_new(mfp, FALSE, 1)) == NULL) | |
| 333 goto error; | |
| 334 if (hp->bh_bnum != 0) | |
| 335 { | |
|
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commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
336 IEMSG(_("E298: Didn't get block nr 0?")); |
| 7 | 337 goto error; |
| 338 } | |
| 339 b0p = (ZERO_BL *)(hp->bh_data); | |
| 340 | |
| 341 b0p->b0_id[0] = BLOCK0_ID0; | |
| 342 b0p->b0_id[1] = BLOCK0_ID1; | |
| 343 b0p->b0_magic_long = (long)B0_MAGIC_LONG; | |
| 344 b0p->b0_magic_int = (int)B0_MAGIC_INT; | |
| 345 b0p->b0_magic_short = (short)B0_MAGIC_SHORT; | |
| 346 b0p->b0_magic_char = B0_MAGIC_CHAR; | |
| 347 STRNCPY(b0p->b0_version, "VIM ", 4); | |
| 348 STRNCPY(b0p->b0_version + 4, Version, 6); | |
| 349 long_to_char((long)mfp->mf_page_size, b0p->b0_page_size); | |
| 625 | 350 |
| 800 | 351 #ifdef FEAT_SPELL |
| 352 if (!buf->b_spell) | |
| 353 #endif | |
| 625 | 354 { |
| 355 b0p->b0_dirty = buf->b_changed ? B0_DIRTY : 0; | |
| 356 b0p->b0_flags = get_fileformat(buf) + 1; | |
| 357 set_b0_fname(b0p, buf); | |
| 358 (void)get_user_name(b0p->b0_uname, B0_UNAME_SIZE); | |
| 359 b0p->b0_uname[B0_UNAME_SIZE - 1] = NUL; | |
| 360 mch_get_host_name(b0p->b0_hname, B0_HNAME_SIZE); | |
| 361 b0p->b0_hname[B0_HNAME_SIZE - 1] = NUL; | |
| 362 long_to_char(mch_get_pid(), b0p->b0_pid); | |
| 2267 | 363 #ifdef FEAT_CRYPT |
| 6122 | 364 ml_set_b0_crypt(buf, b0p); |
| 2267 | 365 #endif |
| 625 | 366 } |
| 7 | 367 |
| 368 /* | |
| 369 * Always sync block number 0 to disk, so we can check the file name in | |
| 2267 | 370 * the swap file in findswapname(). Don't do this for a help files or |
| 371 * a spell buffer though. | |
| 7 | 372 * Only works when there's a swapfile, otherwise it's done when the file |
| 373 * is created. | |
| 374 */ | |
| 375 mf_put(mfp, hp, TRUE, FALSE); | |
| 625 | 376 if (!buf->b_help && !B_SPELL(buf)) |
| 7 | 377 (void)mf_sync(mfp, 0); |
| 378 | |
| 625 | 379 /* |
| 380 * Fill in root pointer block and write page 1. | |
| 381 */ | |
| 7 | 382 if ((hp = ml_new_ptr(mfp)) == NULL) |
| 383 goto error; | |
| 384 if (hp->bh_bnum != 1) | |
| 385 { | |
|
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commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
386 IEMSG(_("E298: Didn't get block nr 1?")); |
| 7 | 387 goto error; |
| 388 } | |
| 389 pp = (PTR_BL *)(hp->bh_data); | |
| 390 pp->pb_count = 1; | |
| 391 pp->pb_pointer[0].pe_bnum = 2; | |
| 392 pp->pb_pointer[0].pe_page_count = 1; | |
| 393 pp->pb_pointer[0].pe_old_lnum = 1; | |
| 394 pp->pb_pointer[0].pe_line_count = 1; /* line count after insertion */ | |
| 395 mf_put(mfp, hp, TRUE, FALSE); | |
| 396 | |
| 625 | 397 /* |
| 398 * Allocate first data block and create an empty line 1. | |
| 399 */ | |
| 7 | 400 if ((hp = ml_new_data(mfp, FALSE, 1)) == NULL) |
| 401 goto error; | |
| 402 if (hp->bh_bnum != 2) | |
| 403 { | |
|
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commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
404 IEMSG(_("E298: Didn't get block nr 2?")); |
| 7 | 405 goto error; |
| 406 } | |
| 407 | |
| 408 dp = (DATA_BL *)(hp->bh_data); | |
| 409 dp->db_index[0] = --dp->db_txt_start; /* at end of block */ | |
| 410 dp->db_free -= 1 + INDEX_SIZE; | |
| 411 dp->db_line_count = 1; | |
| 2003 | 412 *((char_u *)dp + dp->db_txt_start) = NUL; /* empty line */ |
| 7 | 413 |
| 414 return OK; | |
| 415 | |
| 416 error: | |
| 417 if (mfp != NULL) | |
| 418 { | |
| 419 if (hp) | |
| 420 mf_put(mfp, hp, FALSE, FALSE); | |
| 421 mf_close(mfp, TRUE); /* will also free(mfp->mf_fname) */ | |
| 422 } | |
| 625 | 423 buf->b_ml.ml_mfp = NULL; |
| 7 | 424 return FAIL; |
| 425 } | |
| 426 | |
| 2267 | 427 #if defined(FEAT_CRYPT) || defined(PROTO) |
| 428 /* | |
| 6130 | 429 * Prepare encryption for "buf" for the current key and method. |
| 430 */ | |
| 431 static void | |
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
432 ml_set_mfp_crypt(buf_T *buf) |
| 6130 | 433 { |
| 434 if (*buf->b_p_key != NUL) | |
| 435 { | |
| 436 int method_nr = crypt_get_method_nr(buf); | |
| 437 | |
| 438 if (method_nr > CRYPT_M_ZIP) | |
| 439 { | |
| 440 /* Generate a seed and store it in the memfile. */ | |
| 441 sha2_seed(buf->b_ml.ml_mfp->mf_seed, MF_SEED_LEN, NULL, 0); | |
| 442 } | |
| 443 } | |
| 444 } | |
| 445 | |
| 446 /* | |
| 2267 | 447 * Prepare encryption for "buf" with block 0 "b0p". |
| 448 */ | |
| 449 static void | |
|
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parents:
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diff
changeset
|
450 ml_set_b0_crypt(buf_T *buf, ZERO_BL *b0p) |
| 2267 | 451 { |
| 452 if (*buf->b_p_key == NUL) | |
| 453 b0p->b0_id[1] = BLOCK0_ID1; | |
| 454 else | |
| 455 { | |
| 6122 | 456 int method_nr = crypt_get_method_nr(buf); |
| 457 | |
| 458 b0p->b0_id[1] = id1_codes[method_nr]; | |
| 459 if (method_nr > CRYPT_M_ZIP) | |
| 2267 | 460 { |
| 461 /* Generate a seed and store it in block 0 and in the memfile. */ | |
| 462 sha2_seed(&b0p->b0_seed, MF_SEED_LEN, NULL, 0); | |
| 463 mch_memmove(buf->b_ml.ml_mfp->mf_seed, &b0p->b0_seed, MF_SEED_LEN); | |
| 464 } | |
| 465 } | |
| 466 } | |
| 467 | |
| 468 /* | |
| 469 * Called after the crypt key or 'cryptmethod' was changed for "buf". | |
| 470 * Will apply this to the swapfile. | |
| 471 * "old_key" is the previous key. It is equal to buf->b_p_key when | |
| 472 * 'cryptmethod' is changed. | |
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|
473 * "old_cm" is the previous 'cryptmethod'. It is equal to the current |
|
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diff
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|
474 * 'cryptmethod' when 'key' is changed. |
| 2267 | 475 */ |
| 476 void | |
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diff
changeset
|
477 ml_set_crypt_key( |
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
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478 buf_T *buf, |
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
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479 char_u *old_key, |
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41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
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diff
changeset
|
480 char_u *old_cm) |
| 2267 | 481 { |
| 482 memfile_T *mfp = buf->b_ml.ml_mfp; | |
| 483 bhdr_T *hp; | |
| 484 int page_count; | |
| 485 int idx; | |
| 486 long error; | |
| 487 infoptr_T *ip; | |
| 488 PTR_BL *pp; | |
| 489 DATA_BL *dp; | |
| 490 blocknr_T bnum; | |
| 491 int top; | |
| 6817 | 492 int old_method; |
| 2267 | 493 |
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diff
changeset
|
494 if (mfp == NULL) |
| 2267 | 495 return; /* no memfile yet, nothing to do */ |
| 6817 | 496 old_method = crypt_method_nr_from_name(old_cm); |
| 497 | |
| 498 /* First make sure the swapfile is in a consistent state, using the old | |
| 499 * key and method. */ | |
| 500 { | |
| 501 char_u *new_key = buf->b_p_key; | |
| 502 char_u *new_buf_cm = buf->b_p_cm; | |
| 503 | |
| 504 buf->b_p_key = old_key; | |
| 505 buf->b_p_cm = old_cm; | |
| 506 ml_preserve(buf, FALSE); | |
| 507 buf->b_p_key = new_key; | |
| 508 buf->b_p_cm = new_buf_cm; | |
| 509 } | |
| 2267 | 510 |
| 511 /* Set the key, method and seed to be used for reading, these must be the | |
| 512 * old values. */ | |
| 513 mfp->mf_old_key = old_key; | |
| 6817 | 514 mfp->mf_old_cm = old_method; |
| 515 if (old_method > 0 && *old_key != NUL) | |
| 2267 | 516 mch_memmove(mfp->mf_old_seed, mfp->mf_seed, MF_SEED_LEN); |
| 517 | |
| 518 /* Update block 0 with the crypt flag and may set a new seed. */ | |
| 519 ml_upd_block0(buf, UB_CRYPT); | |
| 520 | |
| 521 if (mfp->mf_infile_count > 2) | |
| 522 { | |
| 523 /* | |
| 524 * Need to read back all data blocks from disk, decrypt them with the | |
| 525 * old key/method and mark them to be written. The algorithm is | |
| 526 * similar to what happens in ml_recover(), but we skip negative block | |
| 527 * numbers. | |
| 528 */ | |
| 529 ml_flush_line(buf); /* flush buffered line */ | |
| 530 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
| 531 | |
| 532 hp = NULL; | |
| 533 bnum = 1; /* start with block 1 */ | |
| 534 page_count = 1; /* which is 1 page */ | |
| 535 idx = 0; /* start with first index in block 1 */ | |
| 536 error = 0; | |
| 537 buf->b_ml.ml_stack_top = 0; | |
|
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diff
changeset
|
538 VIM_CLEAR(buf->b_ml.ml_stack); |
| 2267 | 539 buf->b_ml.ml_stack_size = 0; /* no stack yet */ |
| 540 | |
| 541 for ( ; !got_int; line_breakcheck()) | |
| 542 { | |
| 543 if (hp != NULL) | |
| 544 mf_put(mfp, hp, FALSE, FALSE); /* release previous block */ | |
| 545 | |
| 546 /* get the block (pointer or data) */ | |
| 547 if ((hp = mf_get(mfp, (blocknr_T)bnum, page_count)) == NULL) | |
| 548 { | |
| 549 if (bnum == 1) | |
| 550 break; | |
| 551 ++error; | |
| 552 } | |
| 553 else | |
| 554 { | |
| 555 pp = (PTR_BL *)(hp->bh_data); | |
| 556 if (pp->pb_id == PTR_ID) /* it is a pointer block */ | |
| 557 { | |
| 558 if (pp->pb_count == 0) | |
| 559 { | |
| 560 /* empty block? */ | |
| 561 ++error; | |
| 562 } | |
| 563 else if (idx < (int)pp->pb_count) /* go a block deeper */ | |
| 564 { | |
| 565 if (pp->pb_pointer[idx].pe_bnum < 0) | |
| 566 { | |
| 6817 | 567 /* Skip data block with negative block number. |
| 568 * Should not happen, because of the ml_preserve() | |
| 569 * above. Get same block again for next index. */ | |
| 570 ++idx; | |
| 2267 | 571 continue; |
| 572 } | |
| 573 | |
| 574 /* going one block deeper in the tree, new entry in | |
| 575 * stack */ | |
| 576 if ((top = ml_add_stack(buf)) < 0) | |
| 577 { | |
| 578 ++error; | |
| 579 break; /* out of memory */ | |
| 580 } | |
| 581 ip = &(buf->b_ml.ml_stack[top]); | |
| 582 ip->ip_bnum = bnum; | |
| 583 ip->ip_index = idx; | |
| 584 | |
| 585 bnum = pp->pb_pointer[idx].pe_bnum; | |
| 586 page_count = pp->pb_pointer[idx].pe_page_count; | |
| 6817 | 587 idx = 0; |
| 2267 | 588 continue; |
| 589 } | |
| 590 } | |
| 591 else /* not a pointer block */ | |
| 592 { | |
| 593 dp = (DATA_BL *)(hp->bh_data); | |
| 594 if (dp->db_id != DATA_ID) /* block id wrong */ | |
| 595 ++error; | |
| 596 else | |
| 597 { | |
| 598 /* It is a data block, need to write it back to disk. */ | |
| 599 mf_put(mfp, hp, TRUE, FALSE); | |
| 600 hp = NULL; | |
| 601 } | |
| 602 } | |
| 603 } | |
| 604 | |
| 605 if (buf->b_ml.ml_stack_top == 0) /* finished */ | |
| 606 break; | |
| 607 | |
| 608 /* go one block up in the tree */ | |
| 609 ip = &(buf->b_ml.ml_stack[--(buf->b_ml.ml_stack_top)]); | |
| 610 bnum = ip->ip_bnum; | |
| 611 idx = ip->ip_index + 1; /* go to next index */ | |
| 612 page_count = 1; | |
| 613 } | |
| 6817 | 614 if (hp != NULL) |
| 615 mf_put(mfp, hp, FALSE, FALSE); /* release previous block */ | |
| 2657 | 616 |
| 617 if (error > 0) | |
| 618 EMSG(_("E843: Error while updating swap file crypt")); | |
| 2267 | 619 } |
| 620 | |
| 621 mfp->mf_old_key = NULL; | |
| 622 } | |
| 623 #endif | |
| 624 | |
| 7 | 625 /* |
| 626 * ml_setname() is called when the file name of "buf" has been changed. | |
| 627 * It may rename the swap file. | |
| 628 */ | |
| 629 void | |
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diff
changeset
|
630 ml_setname(buf_T *buf) |
| 7 | 631 { |
| 632 int success = FALSE; | |
| 633 memfile_T *mfp; | |
| 634 char_u *fname; | |
| 635 char_u *dirp; | |
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diff
changeset
|
636 #if defined(MSWIN) |
| 7 | 637 char_u *p; |
| 638 #endif | |
| 639 | |
| 640 mfp = buf->b_ml.ml_mfp; | |
| 641 if (mfp->mf_fd < 0) /* there is no swap file yet */ | |
| 642 { | |
| 643 /* | |
| 644 * When 'updatecount' is 0 and 'noswapfile' there is no swap file. | |
| 645 * For help files we will make a swap file now. | |
| 646 */ | |
| 5737 | 647 if (p_uc != 0 && !cmdmod.noswapfile) |
| 7 | 648 ml_open_file(buf); /* create a swap file */ |
| 649 return; | |
| 650 } | |
| 651 | |
| 652 /* | |
| 653 * Try all directories in the 'directory' option. | |
| 654 */ | |
| 655 dirp = p_dir; | |
| 656 for (;;) | |
| 657 { | |
| 658 if (*dirp == NUL) /* tried all directories, fail */ | |
| 659 break; | |
| 43 | 660 fname = findswapname(buf, &dirp, mfp->mf_fname); |
| 661 /* alloc's fname */ | |
| 3158 | 662 if (dirp == NULL) /* out of memory */ |
| 663 break; | |
| 7 | 664 if (fname == NULL) /* no file name found for this dir */ |
| 665 continue; | |
| 666 | |
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diff
changeset
|
667 #if defined(MSWIN) |
| 7 | 668 /* |
| 669 * Set full pathname for swap file now, because a ":!cd dir" may | |
| 670 * change directory without us knowing it. | |
| 671 */ | |
| 672 p = FullName_save(fname, FALSE); | |
| 673 vim_free(fname); | |
| 674 fname = p; | |
| 675 if (fname == NULL) | |
| 676 continue; | |
| 677 #endif | |
| 678 /* if the file name is the same we don't have to do anything */ | |
| 679 if (fnamecmp(fname, mfp->mf_fname) == 0) | |
| 680 { | |
| 681 vim_free(fname); | |
| 682 success = TRUE; | |
| 683 break; | |
| 684 } | |
| 685 /* need to close the swap file before renaming */ | |
| 686 if (mfp->mf_fd >= 0) | |
| 687 { | |
| 688 close(mfp->mf_fd); | |
| 689 mfp->mf_fd = -1; | |
| 690 } | |
| 691 | |
| 692 /* try to rename the swap file */ | |
| 693 if (vim_rename(mfp->mf_fname, fname) == 0) | |
| 694 { | |
| 695 success = TRUE; | |
| 696 vim_free(mfp->mf_fname); | |
| 697 mfp->mf_fname = fname; | |
| 698 vim_free(mfp->mf_ffname); | |
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7961
diff
changeset
|
699 #if defined(MSWIN) |
| 7 | 700 mfp->mf_ffname = NULL; /* mf_fname is full pathname already */ |
| 701 #else | |
| 702 mf_set_ffname(mfp); | |
| 703 #endif | |
| 2267 | 704 ml_upd_block0(buf, UB_SAME_DIR); |
| 7 | 705 break; |
| 706 } | |
| 707 vim_free(fname); /* this fname didn't work, try another */ | |
| 708 } | |
| 709 | |
| 710 if (mfp->mf_fd == -1) /* need to (re)open the swap file */ | |
| 711 { | |
| 712 mfp->mf_fd = mch_open((char *)mfp->mf_fname, O_RDWR | O_EXTRA, 0); | |
| 713 if (mfp->mf_fd < 0) | |
| 714 { | |
| 715 /* could not (re)open the swap file, what can we do???? */ | |
| 716 EMSG(_("E301: Oops, lost the swap file!!!")); | |
| 717 return; | |
| 718 } | |
| 2003 | 719 #ifdef HAVE_FD_CLOEXEC |
| 720 { | |
| 721 int fdflags = fcntl(mfp->mf_fd, F_GETFD); | |
| 722 if (fdflags >= 0 && (fdflags & FD_CLOEXEC) == 0) | |
|
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commit https://github.com/vim/vim/commit/fbc4b4db3a9690906a96e16724350a6241cf32a5
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7881
diff
changeset
|
723 (void)fcntl(mfp->mf_fd, F_SETFD, fdflags | FD_CLOEXEC); |
| 2003 | 724 } |
| 725 #endif | |
| 7 | 726 } |
| 727 if (!success) | |
| 728 EMSG(_("E302: Could not rename swap file")); | |
| 729 } | |
| 730 | |
| 731 /* | |
| 732 * Open a file for the memfile for all buffers that are not readonly or have | |
| 733 * been modified. | |
| 734 * Used when 'updatecount' changes from zero to non-zero. | |
| 735 */ | |
| 736 void | |
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diff
changeset
|
737 ml_open_files(void) |
| 7 | 738 { |
| 739 buf_T *buf; | |
| 740 | |
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commit https://github.com/vim/vim/commit/2932359000b2f918d5fade79ea4d124d5943cd07
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diff
changeset
|
741 FOR_ALL_BUFFERS(buf) |
| 7 | 742 if (!buf->b_p_ro || buf->b_changed) |
| 743 ml_open_file(buf); | |
| 744 } | |
| 745 | |
| 746 /* | |
| 747 * Open a swap file for an existing memfile, if there is no swap file yet. | |
| 748 * If we are unable to find a file name, mf_fname will be NULL | |
| 749 * and the memfile will be in memory only (no recovery possible). | |
| 750 */ | |
| 751 void | |
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diff
changeset
|
752 ml_open_file(buf_T *buf) |
| 7 | 753 { |
| 754 memfile_T *mfp; | |
| 755 char_u *fname; | |
| 756 char_u *dirp; | |
| 757 | |
| 758 mfp = buf->b_ml.ml_mfp; | |
| 5737 | 759 if (mfp == NULL || mfp->mf_fd >= 0 || !buf->b_p_swf || cmdmod.noswapfile) |
| 7 | 760 return; /* nothing to do */ |
| 761 | |
| 748 | 762 #ifdef FEAT_SPELL |
| 625 | 763 /* For a spell buffer use a temp file name. */ |
| 764 if (buf->b_spell) | |
| 765 { | |
| 6721 | 766 fname = vim_tempname('s', FALSE); |
| 625 | 767 if (fname != NULL) |
| 768 (void)mf_open_file(mfp, fname); /* consumes fname! */ | |
| 769 buf->b_may_swap = FALSE; | |
| 770 return; | |
| 771 } | |
| 772 #endif | |
| 773 | |
| 7 | 774 /* |
| 775 * Try all directories in 'directory' option. | |
| 776 */ | |
| 777 dirp = p_dir; | |
| 778 for (;;) | |
| 779 { | |
| 780 if (*dirp == NUL) | |
| 781 break; | |
|
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782 /* There is a small chance that between choosing the swap file name |
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783 * and creating it, another Vim creates the file. In that case the |
| 7 | 784 * creation will fail and we will use another directory. */ |
| 43 | 785 fname = findswapname(buf, &dirp, NULL); /* allocates fname */ |
| 3158 | 786 if (dirp == NULL) |
| 787 break; /* out of memory */ | |
| 7 | 788 if (fname == NULL) |
| 789 continue; | |
| 790 if (mf_open_file(mfp, fname) == OK) /* consumes fname! */ | |
| 791 { | |
|
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792 #if defined(MSWIN) |
| 7 | 793 /* |
| 794 * set full pathname for swap file now, because a ":!cd dir" may | |
| 795 * change directory without us knowing it. | |
| 796 */ | |
| 797 mf_fullname(mfp); | |
| 798 #endif | |
| 2267 | 799 ml_upd_block0(buf, UB_SAME_DIR); |
| 39 | 800 |
| 7 | 801 /* Flush block zero, so others can read it */ |
| 802 if (mf_sync(mfp, MFS_ZERO) == OK) | |
| 630 | 803 { |
| 804 /* Mark all blocks that should be in the swapfile as dirty. | |
| 805 * Needed for when the 'swapfile' option was reset, so that | |
| 806 * the swap file was deleted, and then on again. */ | |
| 807 mf_set_dirty(mfp); | |
| 7 | 808 break; |
| 630 | 809 } |
| 7 | 810 /* Writing block 0 failed: close the file and try another dir */ |
| 811 mf_close_file(buf, FALSE); | |
| 812 } | |
| 813 } | |
| 814 | |
| 815 if (mfp->mf_fname == NULL) /* Failed! */ | |
| 816 { | |
| 817 need_wait_return = TRUE; /* call wait_return later */ | |
| 818 ++no_wait_return; | |
| 819 (void)EMSG2(_("E303: Unable to open swap file for \"%s\", recovery impossible"), | |
| 3839 | 820 buf_spname(buf) != NULL ? buf_spname(buf) : buf->b_fname); |
| 7 | 821 --no_wait_return; |
| 822 } | |
| 823 | |
| 824 /* don't try to open a swap file again */ | |
| 825 buf->b_may_swap = FALSE; | |
| 826 } | |
| 827 | |
| 828 /* | |
| 829 * If still need to create a swap file, and starting to edit a not-readonly | |
| 830 * file, or reading into an existing buffer, create a swap file now. | |
| 831 */ | |
| 832 void | |
|
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833 check_need_swap( |
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834 int newfile) /* reading file into new buffer */ |
| 7 | 835 { |
| 836 if (curbuf->b_may_swap && (!curbuf->b_p_ro || !newfile)) | |
| 837 ml_open_file(curbuf); | |
| 838 } | |
| 839 | |
| 840 /* | |
| 841 * Close memline for buffer 'buf'. | |
| 842 * If 'del_file' is TRUE, delete the swap file | |
| 843 */ | |
| 844 void | |
|
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845 ml_close(buf_T *buf, int del_file) |
| 7 | 846 { |
| 847 if (buf->b_ml.ml_mfp == NULL) /* not open */ | |
| 848 return; | |
| 849 mf_close(buf->b_ml.ml_mfp, del_file); /* close the .swp file */ | |
| 850 if (buf->b_ml.ml_line_lnum != 0 && (buf->b_ml.ml_flags & ML_LINE_DIRTY)) | |
| 851 vim_free(buf->b_ml.ml_line_ptr); | |
| 852 vim_free(buf->b_ml.ml_stack); | |
| 853 #ifdef FEAT_BYTEOFF | |
|
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854 VIM_CLEAR(buf->b_ml.ml_chunksize); |
| 7 | 855 #endif |
| 856 buf->b_ml.ml_mfp = NULL; | |
| 857 | |
| 858 /* Reset the "recovered" flag, give the ATTENTION prompt the next time | |
| 859 * this buffer is loaded. */ | |
| 860 buf->b_flags &= ~BF_RECOVERED; | |
| 861 } | |
| 862 | |
| 863 /* | |
| 864 * Close all existing memlines and memfiles. | |
| 865 * Only used when exiting. | |
| 866 * When 'del_file' is TRUE, delete the memfiles. | |
| 165 | 867 * But don't delete files that were ":preserve"d when we are POSIX compatible. |
| 7 | 868 */ |
| 869 void | |
|
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870 ml_close_all(int del_file) |
| 7 | 871 { |
| 872 buf_T *buf; | |
| 873 | |
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874 FOR_ALL_BUFFERS(buf) |
| 165 | 875 ml_close(buf, del_file && ((buf->b_flags & BF_PRESERVED) == 0 |
| 876 || vim_strchr(p_cpo, CPO_PRESERVE) == NULL)); | |
| 5519 | 877 #ifdef FEAT_SPELL |
| 878 spell_delete_wordlist(); /* delete the internal wordlist */ | |
| 879 #endif | |
| 7 | 880 #ifdef TEMPDIRNAMES |
| 5519 | 881 vim_deltempdir(); /* delete created temp directory */ |
| 7 | 882 #endif |
| 883 } | |
| 884 | |
| 885 /* | |
| 886 * Close all memfiles for not modified buffers. | |
| 887 * Only use just before exiting! | |
| 888 */ | |
| 889 void | |
|
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890 ml_close_notmod(void) |
| 7 | 891 { |
| 892 buf_T *buf; | |
| 893 | |
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894 FOR_ALL_BUFFERS(buf) |
| 7 | 895 if (!bufIsChanged(buf)) |
| 896 ml_close(buf, TRUE); /* close all not-modified buffers */ | |
| 897 } | |
| 898 | |
| 899 /* | |
| 900 * Update the timestamp in the .swp file. | |
| 901 * Used when the file has been written. | |
| 902 */ | |
| 903 void | |
|
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904 ml_timestamp(buf_T *buf) |
| 7 | 905 { |
| 2267 | 906 ml_upd_block0(buf, UB_FNAME); |
| 907 } | |
| 908 | |
| 909 /* | |
| 910 * Return FAIL when the ID of "b0p" is wrong. | |
| 911 */ | |
| 912 static int | |
|
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913 ml_check_b0_id(ZERO_BL *b0p) |
| 2267 | 914 { |
| 915 if (b0p->b0_id[0] != BLOCK0_ID0 | |
| 916 || (b0p->b0_id[1] != BLOCK0_ID1 | |
| 917 && b0p->b0_id[1] != BLOCK0_ID1_C0 | |
| 6122 | 918 && b0p->b0_id[1] != BLOCK0_ID1_C1 |
| 919 && b0p->b0_id[1] != BLOCK0_ID1_C2) | |
| 2267 | 920 ) |
| 921 return FAIL; | |
| 922 return OK; | |
| 39 | 923 } |
| 924 | |
| 925 /* | |
| 926 * Update the timestamp or the B0_SAME_DIR flag of the .swp file. | |
| 927 */ | |
| 928 static void | |
|
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929 ml_upd_block0(buf_T *buf, upd_block0_T what) |
| 39 | 930 { |
| 7 | 931 memfile_T *mfp; |
| 932 bhdr_T *hp; | |
| 933 ZERO_BL *b0p; | |
| 934 | |
| 935 mfp = buf->b_ml.ml_mfp; | |
| 6130 | 936 if (mfp == NULL) |
| 7 | 937 return; |
| 6130 | 938 hp = mf_get(mfp, (blocknr_T)0, 1); |
| 939 if (hp == NULL) | |
| 940 { | |
| 941 #ifdef FEAT_CRYPT | |
| 942 /* Possibly update the seed in the memfile before there is a block0. */ | |
| 943 if (what == UB_CRYPT) | |
| 944 ml_set_mfp_crypt(buf); | |
| 945 #endif | |
| 946 return; | |
| 947 } | |
| 948 | |
| 7 | 949 b0p = (ZERO_BL *)(hp->bh_data); |
| 2267 | 950 if (ml_check_b0_id(b0p) == FAIL) |
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951 IEMSG(_("E304: ml_upd_block0(): Didn't get block 0??")); |
| 7 | 952 else |
| 39 | 953 { |
| 2267 | 954 if (what == UB_FNAME) |
| 39 | 955 set_b0_fname(b0p, buf); |
| 2267 | 956 #ifdef FEAT_CRYPT |
| 957 else if (what == UB_CRYPT) | |
| 958 ml_set_b0_crypt(buf, b0p); | |
| 959 #endif | |
| 960 else /* what == UB_SAME_DIR */ | |
| 39 | 961 set_b0_dir_flag(b0p, buf); |
| 962 } | |
| 7 | 963 mf_put(mfp, hp, TRUE, FALSE); |
| 964 } | |
| 965 | |
| 966 /* | |
| 967 * Write file name and timestamp into block 0 of a swap file. | |
| 968 * Also set buf->b_mtime. | |
| 969 * Don't use NameBuff[]!!! | |
| 970 */ | |
| 971 static void | |
|
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972 set_b0_fname(ZERO_BL *b0p, buf_T *buf) |
| 7 | 973 { |
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974 stat_T st; |
| 7 | 975 |
| 976 if (buf->b_ffname == NULL) | |
| 977 b0p->b0_fname[0] = NUL; | |
| 978 else | |
| 979 { | |
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980 #if defined(MSWIN) || defined(AMIGA) |
| 39 | 981 /* Systems that cannot translate "~user" back into a path: copy the |
| 982 * file name unmodified. Do use slashes instead of backslashes for | |
| 983 * portability. */ | |
| 2267 | 984 vim_strncpy(b0p->b0_fname, buf->b_ffname, B0_FNAME_SIZE_CRYPT - 1); |
| 39 | 985 # ifdef BACKSLASH_IN_FILENAME |
| 986 forward_slash(b0p->b0_fname); | |
| 987 # endif | |
| 7 | 988 #else |
| 989 size_t flen, ulen; | |
| 990 char_u uname[B0_UNAME_SIZE]; | |
| 991 | |
| 992 /* | |
| 993 * For a file under the home directory of the current user, we try to | |
| 994 * replace the home directory path with "~user". This helps when | |
| 995 * editing the same file on different machines over a network. | |
| 996 * First replace home dir path with "~/" with home_replace(). | |
| 997 * Then insert the user name to get "~user/". | |
| 998 */ | |
| 2267 | 999 home_replace(NULL, buf->b_ffname, b0p->b0_fname, |
| 1000 B0_FNAME_SIZE_CRYPT, TRUE); | |
| 7 | 1001 if (b0p->b0_fname[0] == '~') |
| 1002 { | |
| 1003 flen = STRLEN(b0p->b0_fname); | |
| 1004 /* If there is no user name or it is too long, don't use "~/" */ | |
| 1005 if (get_user_name(uname, B0_UNAME_SIZE) == FAIL | |
| 2267 | 1006 || (ulen = STRLEN(uname)) + flen > B0_FNAME_SIZE_CRYPT - 1) |
| 1007 vim_strncpy(b0p->b0_fname, buf->b_ffname, | |
| 1008 B0_FNAME_SIZE_CRYPT - 1); | |
| 7 | 1009 else |
| 1010 { | |
| 1011 mch_memmove(b0p->b0_fname + ulen + 1, b0p->b0_fname + 1, flen); | |
| 1012 mch_memmove(b0p->b0_fname + 1, uname, ulen); | |
| 1013 } | |
| 1014 } | |
| 1015 #endif | |
| 1016 if (mch_stat((char *)buf->b_ffname, &st) >= 0) | |
| 1017 { | |
| 1018 long_to_char((long)st.st_mtime, b0p->b0_mtime); | |
| 1019 #ifdef CHECK_INODE | |
| 1020 long_to_char((long)st.st_ino, b0p->b0_ino); | |
| 1021 #endif | |
| 1022 buf_store_time(buf, &st, buf->b_ffname); | |
| 1023 buf->b_mtime_read = buf->b_mtime; | |
| 1024 } | |
| 1025 else | |
| 1026 { | |
| 1027 long_to_char(0L, b0p->b0_mtime); | |
| 1028 #ifdef CHECK_INODE | |
| 1029 long_to_char(0L, b0p->b0_ino); | |
| 1030 #endif | |
| 1031 buf->b_mtime = 0; | |
| 1032 buf->b_mtime_read = 0; | |
| 1033 buf->b_orig_size = 0; | |
| 1034 buf->b_orig_mode = 0; | |
| 1035 } | |
| 1036 } | |
| 39 | 1037 |
| 1038 #ifdef FEAT_MBYTE | |
| 1039 /* Also add the 'fileencoding' if there is room. */ | |
| 1040 add_b0_fenc(b0p, curbuf); | |
| 1041 #endif | |
| 7 | 1042 } |
| 1043 | |
| 1044 /* | |
| 39 | 1045 * Update the B0_SAME_DIR flag of the swap file. It's set if the file and the |
| 1046 * swapfile for "buf" are in the same directory. | |
| 1047 * This is fail safe: if we are not sure the directories are equal the flag is | |
| 1048 * not set. | |
| 1049 */ | |
| 1050 static void | |
|
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1051 set_b0_dir_flag(ZERO_BL *b0p, buf_T *buf) |
| 39 | 1052 { |
| 1053 if (same_directory(buf->b_ml.ml_mfp->mf_fname, buf->b_ffname)) | |
| 1054 b0p->b0_flags |= B0_SAME_DIR; | |
| 1055 else | |
| 1056 b0p->b0_flags &= ~B0_SAME_DIR; | |
| 1057 } | |
| 1058 | |
| 1059 #ifdef FEAT_MBYTE | |
| 1060 /* | |
| 1061 * When there is room, add the 'fileencoding' to block zero. | |
| 1062 */ | |
| 1063 static void | |
|
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1064 add_b0_fenc( |
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1065 ZERO_BL *b0p, |
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1066 buf_T *buf) |
| 39 | 1067 { |
| 1068 int n; | |
| 2267 | 1069 int size = B0_FNAME_SIZE_NOCRYPT; |
| 1070 | |
| 1071 # ifdef FEAT_CRYPT | |
| 1072 /* Without encryption use the same offset as in Vim 7.2 to be compatible. | |
| 1073 * With encryption it's OK to move elsewhere, the swap file is not | |
| 1074 * compatible anyway. */ | |
| 1075 if (*buf->b_p_key != NUL) | |
| 1076 size = B0_FNAME_SIZE_CRYPT; | |
| 1077 # endif | |
| 39 | 1078 |
| 835 | 1079 n = (int)STRLEN(buf->b_p_fenc); |
| 2267 | 1080 if ((int)STRLEN(b0p->b0_fname) + n + 1 > size) |
| 39 | 1081 b0p->b0_flags &= ~B0_HAS_FENC; |
| 1082 else | |
| 1083 { | |
| 2267 | 1084 mch_memmove((char *)b0p->b0_fname + size - n, |
| 39 | 1085 (char *)buf->b_p_fenc, (size_t)n); |
| 2267 | 1086 *(b0p->b0_fname + size - n - 1) = NUL; |
| 39 | 1087 b0p->b0_flags |= B0_HAS_FENC; |
| 1088 } | |
| 1089 } | |
| 1090 #endif | |
| 1091 | |
| 1092 | |
| 1093 /* | |
| 2267 | 1094 * Try to recover curbuf from the .swp file. |
| 7 | 1095 */ |
| 1096 void | |
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1097 ml_recover(void) |
| 7 | 1098 { |
| 1099 buf_T *buf = NULL; | |
| 1100 memfile_T *mfp = NULL; | |
| 1101 char_u *fname; | |
| 2267 | 1102 char_u *fname_used = NULL; |
| 7 | 1103 bhdr_T *hp = NULL; |
| 1104 ZERO_BL *b0p; | |
| 39 | 1105 int b0_ff; |
| 1106 char_u *b0_fenc = NULL; | |
| 2267 | 1107 #ifdef FEAT_CRYPT |
| 1108 int b0_cm = -1; | |
| 1109 #endif | |
| 7 | 1110 PTR_BL *pp; |
| 1111 DATA_BL *dp; | |
| 1112 infoptr_T *ip; | |
| 1113 blocknr_T bnum; | |
| 1114 int page_count; | |
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1115 stat_T org_stat, swp_stat; |
| 7 | 1116 int len; |
| 1117 int directly; | |
| 1118 linenr_T lnum; | |
| 1119 char_u *p; | |
| 1120 int i; | |
| 1121 long error; | |
| 1122 int cannot_open; | |
| 1123 linenr_T line_count; | |
| 1124 int has_error; | |
| 1125 int idx; | |
| 1126 int top; | |
| 1127 int txt_start; | |
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1128 off_T size; |
| 7 | 1129 int called_from_main; |
| 1130 int serious_error = TRUE; | |
| 1131 long mtime; | |
| 1132 int attr; | |
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1133 int orig_file_status = NOTDONE; |
| 7 | 1134 |
| 1135 recoverymode = TRUE; | |
| 1136 called_from_main = (curbuf->b_ml.ml_mfp == NULL); | |
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1137 attr = HL_ATTR(HLF_E); |
| 1975 | 1138 |
| 1139 /* | |
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1140 * If the file name ends in ".s[a-w][a-z]" we assume this is the swap file. |
| 1975 | 1141 * Otherwise a search is done to find the swap file(s). |
| 1142 */ | |
| 7 | 1143 fname = curbuf->b_fname; |
| 1144 if (fname == NULL) /* When there is no file name */ | |
| 1145 fname = (char_u *)""; | |
| 1146 len = (int)STRLEN(fname); | |
| 1147 if (len >= 4 && | |
| 2823 | 1148 #if defined(VMS) |
|
10889
5780bd3a5a7e
patch 8.0.0334: can't access b:changedtick from a dict reference
Christian Brabandt <cb@256bit.org>
parents:
10575
diff
changeset
|
1149 STRNICMP(fname + len - 4, "_s", 2) |
| 7 | 1150 #else |
|
10889
5780bd3a5a7e
patch 8.0.0334: can't access b:changedtick from a dict reference
Christian Brabandt <cb@256bit.org>
parents:
10575
diff
changeset
|
1151 STRNICMP(fname + len - 4, ".s", 2) |
| 7 | 1152 #endif |
|
10889
5780bd3a5a7e
patch 8.0.0334: can't access b:changedtick from a dict reference
Christian Brabandt <cb@256bit.org>
parents:
10575
diff
changeset
|
1153 == 0 |
|
12975
e311187347c1
patch 8.0.1363: recovering does not work when swap file ends in .stz
Christian Brabandt <cb@256bit.org>
parents:
12477
diff
changeset
|
1154 && vim_strchr((char_u *)"abcdefghijklmnopqrstuvw", |
|
e311187347c1
patch 8.0.1363: recovering does not work when swap file ends in .stz
Christian Brabandt <cb@256bit.org>
parents:
12477
diff
changeset
|
1155 TOLOWER_ASC(fname[len - 2])) != NULL |
| 1975 | 1156 && ASCII_ISALPHA(fname[len - 1])) |
| 7 | 1157 { |
| 1158 directly = TRUE; | |
| 2267 | 1159 fname_used = vim_strsave(fname); /* make a copy for mf_open() */ |
| 7 | 1160 } |
| 1161 else | |
| 1162 { | |
| 1163 directly = FALSE; | |
| 1164 | |
| 1165 /* count the number of matching swap files */ | |
| 2267 | 1166 len = recover_names(fname, FALSE, 0, NULL); |
| 7 | 1167 if (len == 0) /* no swap files found */ |
| 1168 { | |
| 1169 EMSG2(_("E305: No swap file found for %s"), fname); | |
| 1170 goto theend; | |
| 1171 } | |
| 1172 if (len == 1) /* one swap file found, use it */ | |
| 1173 i = 1; | |
| 1174 else /* several swap files found, choose */ | |
| 1175 { | |
| 1176 /* list the names of the swap files */ | |
| 2267 | 1177 (void)recover_names(fname, TRUE, 0, NULL); |
| 7 | 1178 msg_putchar('\n'); |
| 1179 MSG_PUTS(_("Enter number of swap file to use (0 to quit): ")); | |
| 374 | 1180 i = get_number(FALSE, NULL); |
| 7 | 1181 if (i < 1 || i > len) |
| 1182 goto theend; | |
| 1183 } | |
| 1184 /* get the swap file name that will be used */ | |
| 2267 | 1185 (void)recover_names(fname, FALSE, i, &fname_used); |
| 7 | 1186 } |
| 2267 | 1187 if (fname_used == NULL) |
| 7 | 1188 goto theend; /* out of memory */ |
| 1189 | |
| 1190 /* When called from main() still need to initialize storage structure */ | |
| 625 | 1191 if (called_from_main && ml_open(curbuf) == FAIL) |
| 7 | 1192 getout(1); |
| 1193 | |
| 2267 | 1194 /* |
| 1195 * Allocate a buffer structure for the swap file that is used for recovery. | |
|
2407
6bc102a4bff8
Fix memory access to 'cryptmethod' during recovery. (Dominique Pelle)
Bram Moolenaar <bram@vim.org>
parents:
2394
diff
changeset
|
1196 * Only the memline and crypt information in it are really used. |
| 2267 | 1197 */ |
| 7 | 1198 buf = (buf_T *)alloc((unsigned)sizeof(buf_T)); |
| 1199 if (buf == NULL) | |
| 1200 goto theend; | |
| 2267 | 1201 |
| 1202 /* | |
| 1203 * init fields in memline struct | |
| 1204 */ | |
| 7 | 1205 buf->b_ml.ml_stack_size = 0; /* no stack yet */ |
| 1206 buf->b_ml.ml_stack = NULL; /* no stack yet */ | |
| 1207 buf->b_ml.ml_stack_top = 0; /* nothing in the stack */ | |
| 1208 buf->b_ml.ml_line_lnum = 0; /* no cached line */ | |
| 1209 buf->b_ml.ml_locked = NULL; /* no locked block */ | |
| 1210 buf->b_ml.ml_flags = 0; | |
|
2408
9e2e63af1641
Better fix for memory access in recovery. (Dominique Pelle)
Bram Moolenaar <bram@vim.org>
parents:
2407
diff
changeset
|
1211 #ifdef FEAT_CRYPT |
|
9e2e63af1641
Better fix for memory access in recovery. (Dominique Pelle)
Bram Moolenaar <bram@vim.org>
parents:
2407
diff
changeset
|
1212 buf->b_p_key = empty_option; |
|
9e2e63af1641
Better fix for memory access in recovery. (Dominique Pelle)
Bram Moolenaar <bram@vim.org>
parents:
2407
diff
changeset
|
1213 buf->b_p_cm = empty_option; |
|
9e2e63af1641
Better fix for memory access in recovery. (Dominique Pelle)
Bram Moolenaar <bram@vim.org>
parents:
2407
diff
changeset
|
1214 #endif |
| 7 | 1215 |
| 2267 | 1216 /* |
| 1217 * open the memfile from the old swap file | |
| 1218 */ | |
| 1219 p = vim_strsave(fname_used); /* save "fname_used" for the message: | |
| 1220 mf_open() will consume "fname_used"! */ | |
| 1221 mfp = mf_open(fname_used, O_RDONLY); | |
| 1222 fname_used = p; | |
| 7 | 1223 if (mfp == NULL || mfp->mf_fd < 0) |
| 1224 { | |
| 2267 | 1225 if (fname_used != NULL) |
| 1226 EMSG2(_("E306: Cannot open %s"), fname_used); | |
| 7 | 1227 goto theend; |
| 1228 } | |
| 1229 buf->b_ml.ml_mfp = mfp; | |
| 2267 | 1230 #ifdef FEAT_CRYPT |
| 1231 mfp->mf_buffer = buf; | |
| 1232 #endif | |
| 7 | 1233 |
| 1234 /* | |
| 1235 * The page size set in mf_open() might be different from the page size | |
| 1236 * used in the swap file, we must get it from block 0. But to read block | |
| 1237 * 0 we need a page size. Use the minimal size for block 0 here, it will | |
| 1238 * be set to the real value below. | |
| 1239 */ | |
| 1240 mfp->mf_page_size = MIN_SWAP_PAGE_SIZE; | |
| 1241 | |
| 2267 | 1242 /* |
| 1243 * try to read block 0 | |
| 1244 */ | |
| 7 | 1245 if ((hp = mf_get(mfp, (blocknr_T)0, 1)) == NULL) |
| 1246 { | |
| 1247 msg_start(); | |
| 1248 MSG_PUTS_ATTR(_("Unable to read block 0 from "), attr | MSG_HIST); | |
| 1249 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST); | |
| 2267 | 1250 MSG_PUTS_ATTR(_("\nMaybe no changes were made or Vim did not update the swap file."), |
| 7 | 1251 attr | MSG_HIST); |
| 1252 msg_end(); | |
| 1253 goto theend; | |
| 1254 } | |
| 1255 b0p = (ZERO_BL *)(hp->bh_data); | |
| 1256 if (STRNCMP(b0p->b0_version, "VIM 3.0", 7) == 0) | |
| 1257 { | |
| 1258 msg_start(); | |
| 1259 msg_outtrans_attr(mfp->mf_fname, MSG_HIST); | |
| 1260 MSG_PUTS_ATTR(_(" cannot be used with this version of Vim.\n"), | |
| 1261 MSG_HIST); | |
| 1262 MSG_PUTS_ATTR(_("Use Vim version 3.0.\n"), MSG_HIST); | |
| 1263 msg_end(); | |
| 1264 goto theend; | |
| 1265 } | |
| 2267 | 1266 if (ml_check_b0_id(b0p) == FAIL) |
| 7 | 1267 { |
| 1268 EMSG2(_("E307: %s does not look like a Vim swap file"), mfp->mf_fname); | |
| 1269 goto theend; | |
| 1270 } | |
| 1271 if (b0_magic_wrong(b0p)) | |
| 1272 { | |
| 1273 msg_start(); | |
| 1274 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST); | |
|
8212
05b88224cea1
commit https://github.com/vim/vim/commit/48e330aff911be1c798c88a973af6437a8141fce
Christian Brabandt <cb@256bit.org>
parents:
7961
diff
changeset
|
1275 #if defined(MSWIN) |
| 7 | 1276 if (STRNCMP(b0p->b0_hname, "PC ", 3) == 0) |
| 1277 MSG_PUTS_ATTR(_(" cannot be used with this version of Vim.\n"), | |
| 1278 attr | MSG_HIST); | |
| 1279 else | |
| 1280 #endif | |
| 1281 MSG_PUTS_ATTR(_(" cannot be used on this computer.\n"), | |
| 1282 attr | MSG_HIST); | |
| 1283 MSG_PUTS_ATTR(_("The file was created on "), attr | MSG_HIST); | |
|
2273
7f09ce7b4126
Fix a memory leak in encryption. (Dominique Pelle)
Bram Moolenaar <bram@vim.org>
parents:
2272
diff
changeset
|
1284 /* avoid going past the end of a corrupted hostname */ |
| 7 | 1285 b0p->b0_fname[0] = NUL; |
| 1286 MSG_PUTS_ATTR(b0p->b0_hname, attr | MSG_HIST); | |
| 1287 MSG_PUTS_ATTR(_(",\nor the file has been damaged."), attr | MSG_HIST); | |
| 1288 msg_end(); | |
| 1289 goto theend; | |
| 1290 } | |
| 1105 | 1291 |
| 2267 | 1292 #ifdef FEAT_CRYPT |
| 6122 | 1293 for (i = 0; i < (int)(sizeof(id1_codes) / sizeof(int)); ++i) |
| 1294 if (id1_codes[i] == b0p->b0_id[1]) | |
| 1295 b0_cm = i; | |
| 1296 if (b0_cm > 0) | |
| 2267 | 1297 mch_memmove(mfp->mf_seed, &b0p->b0_seed, MF_SEED_LEN); |
| 6122 | 1298 crypt_set_cm_option(buf, b0_cm < 0 ? 0 : b0_cm); |
| 2267 | 1299 #else |
| 1300 if (b0p->b0_id[1] != BLOCK0_ID1) | |
| 1301 { | |
|
2283
7e1bd501306d
Mainly documentation updates.
Bram Moolenaar <bram@vim.org>
parents:
2273
diff
changeset
|
1302 EMSG2(_("E833: %s is encrypted and this version of Vim does not support encryption"), mfp->mf_fname); |
| 2267 | 1303 goto theend; |
| 1304 } | |
| 1305 #endif | |
| 1306 | |
| 7 | 1307 /* |
| 1308 * If we guessed the wrong page size, we have to recalculate the | |
| 1309 * highest block number in the file. | |
| 1310 */ | |
| 1311 if (mfp->mf_page_size != (unsigned)char_to_long(b0p->b0_page_size)) | |
| 1312 { | |
| 1105 | 1313 unsigned previous_page_size = mfp->mf_page_size; |
| 1314 | |
| 7 | 1315 mf_new_page_size(mfp, (unsigned)char_to_long(b0p->b0_page_size)); |
| 1105 | 1316 if (mfp->mf_page_size < previous_page_size) |
| 1317 { | |
| 1318 msg_start(); | |
| 1319 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST); | |
| 1320 MSG_PUTS_ATTR(_(" has been damaged (page size is smaller than minimum value).\n"), | |
| 1321 attr | MSG_HIST); | |
| 1322 msg_end(); | |
| 1323 goto theend; | |
| 1324 } | |
|
9387
f094d4085014
commit https://github.com/vim/vim/commit/8767f52fbfd4f053ce00a978227c95f1d7d323fe
Christian Brabandt <cb@256bit.org>
parents:
9295
diff
changeset
|
1325 if ((size = vim_lseek(mfp->mf_fd, (off_T)0L, SEEK_END)) <= 0) |
| 7 | 1326 mfp->mf_blocknr_max = 0; /* no file or empty file */ |
| 1327 else | |
| 1328 mfp->mf_blocknr_max = (blocknr_T)(size / mfp->mf_page_size); | |
| 1329 mfp->mf_infile_count = mfp->mf_blocknr_max; | |
| 1105 | 1330 |
| 1331 /* need to reallocate the memory used to store the data */ | |
| 1332 p = alloc(mfp->mf_page_size); | |
| 1333 if (p == NULL) | |
| 1334 goto theend; | |
| 1335 mch_memmove(p, hp->bh_data, previous_page_size); | |
| 1336 vim_free(hp->bh_data); | |
| 1337 hp->bh_data = p; | |
| 1338 b0p = (ZERO_BL *)(hp->bh_data); | |
| 7 | 1339 } |
| 1340 | |
| 2267 | 1341 /* |
| 1342 * If .swp file name given directly, use name from swap file for buffer. | |
| 1343 */ | |
| 7 | 1344 if (directly) |
| 1345 { | |
| 1346 expand_env(b0p->b0_fname, NameBuff, MAXPATHL); | |
| 1347 if (setfname(curbuf, NameBuff, NULL, TRUE) == FAIL) | |
| 1348 goto theend; | |
| 1349 } | |
| 1350 | |
| 1351 home_replace(NULL, mfp->mf_fname, NameBuff, MAXPATHL, TRUE); | |
| 274 | 1352 smsg((char_u *)_("Using swap file \"%s\""), NameBuff); |
| 7 | 1353 |
| 1354 if (buf_spname(curbuf) != NULL) | |
| 3839 | 1355 vim_strncpy(NameBuff, buf_spname(curbuf), MAXPATHL - 1); |
| 7 | 1356 else |
| 1357 home_replace(NULL, curbuf->b_ffname, NameBuff, MAXPATHL, TRUE); | |
| 274 | 1358 smsg((char_u *)_("Original file \"%s\""), NameBuff); |
| 7 | 1359 msg_putchar('\n'); |
| 1360 | |
| 2267 | 1361 /* |
| 1362 * check date of swap file and original file | |
| 1363 */ | |
| 7 | 1364 mtime = char_to_long(b0p->b0_mtime); |
| 1365 if (curbuf->b_ffname != NULL | |
| 1366 && mch_stat((char *)curbuf->b_ffname, &org_stat) != -1 | |
| 1367 && ((mch_stat((char *)mfp->mf_fname, &swp_stat) != -1 | |
| 1368 && org_stat.st_mtime > swp_stat.st_mtime) | |
| 1369 || org_stat.st_mtime != mtime)) | |
| 1370 { | |
| 1371 EMSG(_("E308: Warning: Original file may have been changed")); | |
| 1372 } | |
| 1373 out_flush(); | |
| 39 | 1374 |
| 1375 /* Get the 'fileformat' and 'fileencoding' from block zero. */ | |
| 1376 b0_ff = (b0p->b0_flags & B0_FF_MASK); | |
| 1377 if (b0p->b0_flags & B0_HAS_FENC) | |
| 1378 { | |
|
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2267
diff
changeset
|
1379 int fnsize = B0_FNAME_SIZE_NOCRYPT; |
| 2267 | 1380 |
| 1381 #ifdef FEAT_CRYPT | |
| 1382 /* Use the same size as in add_b0_fenc(). */ | |
| 1383 if (b0p->b0_id[1] != BLOCK0_ID1) | |
|
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2267
diff
changeset
|
1384 fnsize = B0_FNAME_SIZE_CRYPT; |
| 2267 | 1385 #endif |
|
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2267
diff
changeset
|
1386 for (p = b0p->b0_fname + fnsize; p > b0p->b0_fname && p[-1] != NUL; --p) |
| 39 | 1387 ; |
|
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2267
diff
changeset
|
1388 b0_fenc = vim_strnsave(p, (int)(b0p->b0_fname + fnsize - p)); |
| 39 | 1389 } |
| 1390 | |
| 7 | 1391 mf_put(mfp, hp, FALSE, FALSE); /* release block 0 */ |
| 1392 hp = NULL; | |
| 1393 | |
| 1394 /* | |
| 1395 * Now that we are sure that the file is going to be recovered, clear the | |
| 1396 * contents of the current buffer. | |
| 1397 */ | |
| 1398 while (!(curbuf->b_ml.ml_flags & ML_EMPTY)) | |
| 1399 ml_delete((linenr_T)1, FALSE); | |
| 1400 | |
| 1401 /* | |
| 1402 * Try reading the original file to obtain the values of 'fileformat', | |
| 1403 * 'fileencoding', etc. Ignore errors. The text itself is not used. | |
| 2267 | 1404 * When the file is encrypted the user is asked to enter the key. |
| 7 | 1405 */ |
| 1406 if (curbuf->b_ffname != NULL) | |
|
2162
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1407 orig_file_status = readfile(curbuf->b_ffname, NULL, (linenr_T)0, |
| 7 | 1408 (linenr_T)0, (linenr_T)MAXLNUM, NULL, READ_NEW); |
| 1409 | |
| 2267 | 1410 #ifdef FEAT_CRYPT |
| 1411 if (b0_cm >= 0) | |
| 1412 { | |
| 1413 /* Need to ask the user for the crypt key. If this fails we continue | |
| 1414 * without a key, will probably get garbage text. */ | |
| 1415 if (*curbuf->b_p_key != NUL) | |
| 1416 { | |
| 1417 smsg((char_u *)_("Swap file is encrypted: \"%s\""), fname_used); | |
| 1418 MSG_PUTS(_("\nIf you entered a new crypt key but did not write the text file,")); | |
| 1419 MSG_PUTS(_("\nenter the new crypt key.")); | |
| 1420 MSG_PUTS(_("\nIf you wrote the text file after changing the crypt key press enter")); | |
| 1421 MSG_PUTS(_("\nto use the same key for text file and swap file")); | |
| 1422 } | |
| 1423 else | |
| 1424 smsg((char_u *)_(need_key_msg), fname_used); | |
| 6122 | 1425 buf->b_p_key = crypt_get_key(FALSE, FALSE); |
| 2267 | 1426 if (buf->b_p_key == NULL) |
| 1427 buf->b_p_key = curbuf->b_p_key; | |
| 1428 else if (*buf->b_p_key == NUL) | |
| 1429 { | |
| 1430 vim_free(buf->b_p_key); | |
| 1431 buf->b_p_key = curbuf->b_p_key; | |
| 1432 } | |
| 1433 if (buf->b_p_key == NULL) | |
| 1434 buf->b_p_key = empty_option; | |
|
2165
733f0dc510c3
Undo changes that are meant for the Vim 7.3 branch.
Bram Moolenaar <bram@vim.org>
parents:
2162
diff
changeset
|
1435 } |
| 2267 | 1436 #endif |
| 7 | 1437 |
| 39 | 1438 /* Use the 'fileformat' and 'fileencoding' as stored in the swap file. */ |
| 1439 if (b0_ff != 0) | |
| 1440 set_fileformat(b0_ff - 1, OPT_LOCAL); | |
| 1441 if (b0_fenc != NULL) | |
| 1442 { | |
| 1443 set_option_value((char_u *)"fenc", 0L, b0_fenc, OPT_LOCAL); | |
| 1444 vim_free(b0_fenc); | |
| 1445 } | |
| 1446 unchanged(curbuf, TRUE); | |
| 1447 | |
| 7 | 1448 bnum = 1; /* start with block 1 */ |
| 1449 page_count = 1; /* which is 1 page */ | |
| 1450 lnum = 0; /* append after line 0 in curbuf */ | |
| 1451 line_count = 0; | |
| 1452 idx = 0; /* start with first index in block 1 */ | |
| 1453 error = 0; | |
| 1454 buf->b_ml.ml_stack_top = 0; | |
| 1455 buf->b_ml.ml_stack = NULL; | |
| 1456 buf->b_ml.ml_stack_size = 0; /* no stack yet */ | |
| 1457 | |
| 1458 if (curbuf->b_ffname == NULL) | |
| 1459 cannot_open = TRUE; | |
| 1460 else | |
| 1461 cannot_open = FALSE; | |
| 1462 | |
| 1463 serious_error = FALSE; | |
| 1464 for ( ; !got_int; line_breakcheck()) | |
| 1465 { | |
| 1466 if (hp != NULL) | |
| 1467 mf_put(mfp, hp, FALSE, FALSE); /* release previous block */ | |
| 1468 | |
| 1469 /* | |
| 1470 * get block | |
| 1471 */ | |
| 1472 if ((hp = mf_get(mfp, (blocknr_T)bnum, page_count)) == NULL) | |
| 1473 { | |
| 1474 if (bnum == 1) | |
| 1475 { | |
| 1476 EMSG2(_("E309: Unable to read block 1 from %s"), mfp->mf_fname); | |
| 1477 goto theend; | |
| 1478 } | |
| 1479 ++error; | |
| 1480 ml_append(lnum++, (char_u *)_("???MANY LINES MISSING"), | |
| 1481 (colnr_T)0, TRUE); | |
| 1482 } | |
| 1483 else /* there is a block */ | |
| 1484 { | |
| 1485 pp = (PTR_BL *)(hp->bh_data); | |
| 1486 if (pp->pb_id == PTR_ID) /* it is a pointer block */ | |
| 1487 { | |
| 1488 /* check line count when using pointer block first time */ | |
| 1489 if (idx == 0 && line_count != 0) | |
| 1490 { | |
| 1491 for (i = 0; i < (int)pp->pb_count; ++i) | |
| 1492 line_count -= pp->pb_pointer[i].pe_line_count; | |
| 1493 if (line_count != 0) | |
| 1494 { | |
| 1495 ++error; | |
| 1496 ml_append(lnum++, (char_u *)_("???LINE COUNT WRONG"), | |
| 1497 (colnr_T)0, TRUE); | |
| 1498 } | |
| 1499 } | |
| 1500 | |
| 1501 if (pp->pb_count == 0) | |
| 1502 { | |
| 1503 ml_append(lnum++, (char_u *)_("???EMPTY BLOCK"), | |
| 1504 (colnr_T)0, TRUE); | |
| 1505 ++error; | |
| 1506 } | |
| 1507 else if (idx < (int)pp->pb_count) /* go a block deeper */ | |
| 1508 { | |
| 1509 if (pp->pb_pointer[idx].pe_bnum < 0) | |
| 1510 { | |
| 1511 /* | |
| 1512 * Data block with negative block number. | |
| 1513 * Try to read lines from the original file. | |
| 1514 * This is slow, but it works. | |
| 1515 */ | |
| 1516 if (!cannot_open) | |
| 1517 { | |
| 1518 line_count = pp->pb_pointer[idx].pe_line_count; | |
| 1519 if (readfile(curbuf->b_ffname, NULL, lnum, | |
| 1520 pp->pb_pointer[idx].pe_old_lnum - 1, | |
|
10575
01a5f64a7a20
patch 8.0.0177: BufEnter autocommand not fired for a directory
Christian Brabandt <cb@256bit.org>
parents:
10359
diff
changeset
|
1521 line_count, NULL, 0) != OK) |
| 7 | 1522 cannot_open = TRUE; |
| 1523 else | |
| 1524 lnum += line_count; | |
| 1525 } | |
| 1526 if (cannot_open) | |
| 1527 { | |
| 1528 ++error; | |
| 1529 ml_append(lnum++, (char_u *)_("???LINES MISSING"), | |
| 1530 (colnr_T)0, TRUE); | |
| 1531 } | |
| 1532 ++idx; /* get same block again for next index */ | |
| 1533 continue; | |
| 1534 } | |
| 1535 | |
| 1536 /* | |
| 1537 * going one block deeper in the tree | |
| 1538 */ | |
| 1539 if ((top = ml_add_stack(buf)) < 0) /* new entry in stack */ | |
| 1540 { | |
| 1541 ++error; | |
| 1542 break; /* out of memory */ | |
| 1543 } | |
| 1544 ip = &(buf->b_ml.ml_stack[top]); | |
| 1545 ip->ip_bnum = bnum; | |
| 1546 ip->ip_index = idx; | |
| 1547 | |
| 1548 bnum = pp->pb_pointer[idx].pe_bnum; | |
| 1549 line_count = pp->pb_pointer[idx].pe_line_count; | |
| 1550 page_count = pp->pb_pointer[idx].pe_page_count; | |
| 2885 | 1551 idx = 0; |
| 7 | 1552 continue; |
| 1553 } | |
| 1554 } | |
| 1555 else /* not a pointer block */ | |
| 1556 { | |
| 1557 dp = (DATA_BL *)(hp->bh_data); | |
| 1558 if (dp->db_id != DATA_ID) /* block id wrong */ | |
| 1559 { | |
| 1560 if (bnum == 1) | |
| 1561 { | |
| 1562 EMSG2(_("E310: Block 1 ID wrong (%s not a .swp file?)"), | |
| 1563 mfp->mf_fname); | |
| 1564 goto theend; | |
| 1565 } | |
| 1566 ++error; | |
| 1567 ml_append(lnum++, (char_u *)_("???BLOCK MISSING"), | |
| 1568 (colnr_T)0, TRUE); | |
| 1569 } | |
| 1570 else | |
| 1571 { | |
| 1572 /* | |
| 1573 * it is a data block | |
| 1574 * Append all the lines in this block | |
| 1575 */ | |
| 1576 has_error = FALSE; | |
| 1577 /* | |
| 1578 * check length of block | |
| 1579 * if wrong, use length in pointer block | |
| 1580 */ | |
| 1581 if (page_count * mfp->mf_page_size != dp->db_txt_end) | |
| 1582 { | |
| 1583 ml_append(lnum++, (char_u *)_("??? from here until ???END lines may be messed up"), | |
| 1584 (colnr_T)0, TRUE); | |
| 1585 ++error; | |
| 1586 has_error = TRUE; | |
| 1587 dp->db_txt_end = page_count * mfp->mf_page_size; | |
| 1588 } | |
| 1589 | |
| 1590 /* make sure there is a NUL at the end of the block */ | |
| 1591 *((char_u *)dp + dp->db_txt_end - 1) = NUL; | |
| 1592 | |
| 1593 /* | |
| 1594 * check number of lines in block | |
| 1595 * if wrong, use count in data block | |
| 1596 */ | |
| 1597 if (line_count != dp->db_line_count) | |
| 1598 { | |
| 1599 ml_append(lnum++, (char_u *)_("??? from here until ???END lines may have been inserted/deleted"), | |
| 1600 (colnr_T)0, TRUE); | |
| 1601 ++error; | |
| 1602 has_error = TRUE; | |
| 1603 } | |
| 1604 | |
| 1605 for (i = 0; i < dp->db_line_count; ++i) | |
| 1606 { | |
| 1607 txt_start = (dp->db_index[i] & DB_INDEX_MASK); | |
| 1978 | 1608 if (txt_start <= (int)HEADER_SIZE |
| 7 | 1609 || txt_start >= (int)dp->db_txt_end) |
| 1610 { | |
| 1611 p = (char_u *)"???"; | |
| 1612 ++error; | |
| 1613 } | |
| 1614 else | |
| 1615 p = (char_u *)dp + txt_start; | |
| 1616 ml_append(lnum++, p, (colnr_T)0, TRUE); | |
| 1617 } | |
| 1618 if (has_error) | |
| 1978 | 1619 ml_append(lnum++, (char_u *)_("???END"), |
| 1620 (colnr_T)0, TRUE); | |
| 7 | 1621 } |
| 1622 } | |
| 1623 } | |
| 1624 | |
| 1625 if (buf->b_ml.ml_stack_top == 0) /* finished */ | |
| 1626 break; | |
| 1627 | |
| 1628 /* | |
| 1629 * go one block up in the tree | |
| 1630 */ | |
| 1631 ip = &(buf->b_ml.ml_stack[--(buf->b_ml.ml_stack_top)]); | |
| 1632 bnum = ip->ip_bnum; | |
| 1633 idx = ip->ip_index + 1; /* go to next index */ | |
| 1634 page_count = 1; | |
| 1635 } | |
| 1636 | |
| 1637 /* | |
|
2162
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1638 * Compare the buffer contents with the original file. When they differ |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1639 * set the 'modified' flag. |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
1640 * Lines 1 - lnum are the new contents. |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1641 * Lines lnum + 1 to ml_line_count are the original contents. |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1642 * Line ml_line_count + 1 in the dummy empty line. |
| 7 | 1643 */ |
|
2162
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1644 if (orig_file_status != OK || curbuf->b_ml.ml_line_count != lnum * 2 + 1) |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1645 { |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1646 /* Recovering an empty file results in two lines and the first line is |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1647 * empty. Don't set the modified flag then. */ |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1648 if (!(curbuf->b_ml.ml_line_count == 2 && *ml_get(1) == NUL)) |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1649 { |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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parents:
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diff
changeset
|
1650 changed_int(); |
|
10952
835604f3c37a
patch 8.0.0365: might free a dict item that wasn't allocated
Christian Brabandt <cb@256bit.org>
parents:
10896
diff
changeset
|
1651 ++CHANGEDTICK(curbuf); |
|
2162
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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parents:
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diff
changeset
|
1652 } |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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parents:
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diff
changeset
|
1653 } |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
1654 else |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
1655 { |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
1656 for (idx = 1; idx <= lnum; ++idx) |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1657 { |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1658 /* Need to copy one line, fetching the other one may flush it. */ |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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parents:
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diff
changeset
|
1659 p = vim_strsave(ml_get(idx)); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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parents:
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diff
changeset
|
1660 i = STRCMP(p, ml_get(idx + lnum)); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
1661 vim_free(p); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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parents:
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diff
changeset
|
1662 if (i != 0) |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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parents:
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diff
changeset
|
1663 { |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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parents:
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diff
changeset
|
1664 changed_int(); |
|
10952
835604f3c37a
patch 8.0.0365: might free a dict item that wasn't allocated
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
1665 ++CHANGEDTICK(curbuf); |
|
2162
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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parents:
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diff
changeset
|
1666 break; |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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parents:
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diff
changeset
|
1667 } |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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parents:
2145
diff
changeset
|
1668 } |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
1669 } |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
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diff
changeset
|
1670 |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
1671 /* |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1672 * Delete the lines from the original file and the dummy line from the |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1673 * empty buffer. These will now be after the last line in the buffer. |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1674 */ |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1675 while (curbuf->b_ml.ml_line_count > lnum |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
1676 && !(curbuf->b_ml.ml_flags & ML_EMPTY)) |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1677 ml_delete(curbuf->b_ml.ml_line_count, FALSE); |
| 7 | 1678 curbuf->b_flags |= BF_RECOVERED; |
| 1679 | |
| 1680 recoverymode = FALSE; | |
| 1681 if (got_int) | |
| 1682 EMSG(_("E311: Recovery Interrupted")); | |
| 1683 else if (error) | |
| 1684 { | |
| 1685 ++no_wait_return; | |
| 1686 MSG(">>>>>>>>>>>>>"); | |
| 1687 EMSG(_("E312: Errors detected while recovering; look for lines starting with ???")); | |
| 1688 --no_wait_return; | |
| 1689 MSG(_("See \":help E312\" for more information.")); | |
| 1690 MSG(">>>>>>>>>>>>>"); | |
| 1691 } | |
| 1692 else | |
| 1693 { | |
|
2162
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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parents:
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diff
changeset
|
1694 if (curbuf->b_changed) |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1695 { |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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parents:
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diff
changeset
|
1696 MSG(_("Recovery completed. You should check if everything is OK.")); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
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diff
changeset
|
1697 MSG_PUTS(_("\n(You might want to write out this file under another name\n")); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
1698 MSG_PUTS(_("and run diff with the original file to check for changes)")); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
1699 } |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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parents:
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diff
changeset
|
1700 else |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
1701 MSG(_("Recovery completed. Buffer contents equals file contents.")); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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diff
changeset
|
1702 MSG_PUTS(_("\nYou may want to delete the .swp file now.\n\n")); |
| 7 | 1703 cmdline_row = msg_row; |
| 1704 } | |
| 2267 | 1705 #ifdef FEAT_CRYPT |
| 1706 if (*buf->b_p_key != NUL && STRCMP(curbuf->b_p_key, buf->b_p_key) != 0) | |
| 1707 { | |
| 1708 MSG_PUTS(_("Using crypt key from swap file for the text file.\n")); | |
| 1709 set_option_value((char_u *)"key", 0L, buf->b_p_key, OPT_LOCAL); | |
| 1710 } | |
| 1711 #endif | |
| 7 | 1712 redraw_curbuf_later(NOT_VALID); |
| 1713 | |
| 1714 theend: | |
| 2267 | 1715 vim_free(fname_used); |
| 7 | 1716 recoverymode = FALSE; |
| 1717 if (mfp != NULL) | |
| 1718 { | |
| 1719 if (hp != NULL) | |
| 1720 mf_put(mfp, hp, FALSE, FALSE); | |
| 1721 mf_close(mfp, FALSE); /* will also vim_free(mfp->mf_fname) */ | |
| 1722 } | |
| 1053 | 1723 if (buf != NULL) |
| 1724 { | |
| 2267 | 1725 #ifdef FEAT_CRYPT |
| 1726 if (buf->b_p_key != curbuf->b_p_key) | |
| 1727 free_string_option(buf->b_p_key); | |
|
2407
6bc102a4bff8
Fix memory access to 'cryptmethod' during recovery. (Dominique Pelle)
Bram Moolenaar <bram@vim.org>
parents:
2394
diff
changeset
|
1728 free_string_option(buf->b_p_cm); |
| 2267 | 1729 #endif |
| 1053 | 1730 vim_free(buf->b_ml.ml_stack); |
| 1731 vim_free(buf); | |
| 1732 } | |
| 7 | 1733 if (serious_error && called_from_main) |
| 1734 ml_close(curbuf, TRUE); | |
| 1735 else | |
| 1736 { | |
| 1737 apply_autocmds(EVENT_BUFREADPOST, NULL, curbuf->b_fname, FALSE, curbuf); | |
| 1738 apply_autocmds(EVENT_BUFWINENTER, NULL, curbuf->b_fname, FALSE, curbuf); | |
| 1739 } | |
| 1740 return; | |
| 1741 } | |
| 1742 | |
| 1743 /* | |
| 1744 * Find the names of swap files in current directory and the directory given | |
| 1745 * with the 'directory' option. | |
| 1746 * | |
| 1747 * Used to: | |
| 1748 * - list the swap files for "vim -r" | |
| 1749 * - count the number of swap files when recovering | |
| 1750 * - list the swap files when recovering | |
| 1751 * - find the name of the n'th swap file when recovering | |
| 1752 */ | |
| 1753 int | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
1754 recover_names( |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
1755 char_u *fname, /* base for swap file name */ |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
1756 int list, /* when TRUE, list the swap file names */ |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
1757 int nr, /* when non-zero, return nr'th swap file name */ |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
1758 char_u **fname_out) /* result when "nr" > 0 */ |
| 7 | 1759 { |
| 1760 int num_names; | |
| 1761 char_u *(names[6]); | |
| 1762 char_u *tail; | |
| 1763 char_u *p; | |
| 1764 int num_files; | |
| 1765 int file_count = 0; | |
| 1766 char_u **files; | |
| 1767 int i; | |
| 1768 char_u *dirp; | |
| 1769 char_u *dir_name; | |
| 2175 | 1770 char_u *fname_res = NULL; |
|
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|
1771 #ifdef HAVE_READLINK |
|
de0e7ca61893
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diff
changeset
|
1772 char_u fname_buf[MAXPATHL]; |
| 2175 | 1773 #endif |
| 1774 | |
| 1775 if (fname != NULL) | |
| 1776 { | |
| 1777 #ifdef HAVE_READLINK | |
| 2267 | 1778 /* Expand symlink in the file name, because the swap file is created |
| 1779 * with the actual file instead of with the symlink. */ | |
| 1780 if (resolve_symlink(fname, fname_buf) == OK) | |
| 1781 fname_res = fname_buf; | |
| 1782 else | |
|
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diff
changeset
|
1783 #endif |
| 2267 | 1784 fname_res = fname; |
| 2175 | 1785 } |
| 7 | 1786 |
| 1787 if (list) | |
| 1788 { | |
|
2145
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diff
changeset
|
1789 /* use msg() to start the scrolling properly */ |
| 7 | 1790 msg((char_u *)_("Swap files found:")); |
| 1791 msg_putchar('\n'); | |
| 1792 } | |
| 1793 | |
| 1794 /* | |
| 1795 * Do the loop for every directory in 'directory'. | |
| 1796 * First allocate some memory to put the directory name in. | |
| 1797 */ | |
| 1798 dir_name = alloc((unsigned)STRLEN(p_dir) + 1); | |
| 1799 dirp = p_dir; | |
| 1800 while (dir_name != NULL && *dirp) | |
| 1801 { | |
| 1802 /* | |
| 1803 * Isolate a directory name from *dirp and put it in dir_name (we know | |
| 1804 * it is large enough, so use 31000 for length). | |
| 1805 * Advance dirp to next directory name. | |
| 1806 */ | |
| 1807 (void)copy_option_part(&dirp, dir_name, 31000, ","); | |
| 1808 | |
| 1809 if (dir_name[0] == '.' && dir_name[1] == NUL) /* check current dir */ | |
| 1810 { | |
| 2267 | 1811 if (fname == NULL) |
| 7 | 1812 { |
| 1813 #ifdef VMS | |
| 1814 names[0] = vim_strsave((char_u *)"*_sw%"); | |
| 1815 #else | |
| 1816 names[0] = vim_strsave((char_u *)"*.sw?"); | |
| 1817 #endif | |
| 1005 | 1818 #if defined(UNIX) || defined(WIN3264) |
| 1819 /* For Unix names starting with a dot are special. MS-Windows | |
| 1820 * supports this too, on some file systems. */ | |
| 7 | 1821 names[1] = vim_strsave((char_u *)".*.sw?"); |
| 1822 names[2] = vim_strsave((char_u *)".sw?"); | |
| 1823 num_names = 3; | |
| 1824 #else | |
| 1825 # ifdef VMS | |
| 1826 names[1] = vim_strsave((char_u *)".*_sw%"); | |
| 1827 num_names = 2; | |
| 1828 # else | |
| 1829 num_names = 1; | |
| 1830 # endif | |
| 1831 #endif | |
| 1832 } | |
| 1833 else | |
|
2145
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1834 num_names = recov_file_names(names, fname_res, TRUE); |
| 7 | 1835 } |
| 1836 else /* check directory dir_name */ | |
| 1837 { | |
| 2267 | 1838 if (fname == NULL) |
| 7 | 1839 { |
| 1840 #ifdef VMS | |
| 1841 names[0] = concat_fnames(dir_name, (char_u *)"*_sw%", TRUE); | |
| 1842 #else | |
| 1843 names[0] = concat_fnames(dir_name, (char_u *)"*.sw?", TRUE); | |
| 1844 #endif | |
| 1005 | 1845 #if defined(UNIX) || defined(WIN3264) |
| 1846 /* For Unix names starting with a dot are special. MS-Windows | |
| 1847 * supports this too, on some file systems. */ | |
| 7 | 1848 names[1] = concat_fnames(dir_name, (char_u *)".*.sw?", TRUE); |
| 1849 names[2] = concat_fnames(dir_name, (char_u *)".sw?", TRUE); | |
| 1850 num_names = 3; | |
| 1851 #else | |
| 1852 # ifdef VMS | |
| 1853 names[1] = concat_fnames(dir_name, (char_u *)".*_sw%", TRUE); | |
| 1854 num_names = 2; | |
| 1855 # else | |
| 1856 num_names = 1; | |
| 1857 # endif | |
| 1858 #endif | |
| 1859 } | |
| 1860 else | |
| 1861 { | |
| 1862 #if defined(UNIX) || defined(WIN3264) | |
|
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1863 int len = (int)STRLEN(dir_name); |
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1864 |
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1865 p = dir_name + len; |
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1866 if (after_pathsep(dir_name, p) && len > 1 && p[-1] == p[-2]) |
| 7 | 1867 { |
| 1868 /* Ends with '//', Use Full path for swap name */ | |
|
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1869 tail = make_percent_swname(dir_name, fname_res); |
| 7 | 1870 } |
| 1871 else | |
| 1872 #endif | |
| 1873 { | |
|
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1874 tail = gettail(fname_res); |
| 7 | 1875 tail = concat_fnames(dir_name, tail, TRUE); |
| 1876 } | |
| 1877 if (tail == NULL) | |
| 1878 num_names = 0; | |
| 1879 else | |
| 1880 { | |
| 1881 num_names = recov_file_names(names, tail, FALSE); | |
| 1882 vim_free(tail); | |
| 1883 } | |
| 1884 } | |
| 1885 } | |
| 1886 | |
| 1887 /* check for out-of-memory */ | |
| 1888 for (i = 0; i < num_names; ++i) | |
| 1889 { | |
| 1890 if (names[i] == NULL) | |
| 1891 { | |
| 1892 for (i = 0; i < num_names; ++i) | |
| 1893 vim_free(names[i]); | |
| 1894 num_names = 0; | |
| 1895 } | |
| 1896 } | |
| 1897 if (num_names == 0) | |
| 1898 num_files = 0; | |
| 1899 else if (expand_wildcards(num_names, names, &num_files, &files, | |
| 1900 EW_KEEPALL|EW_FILE|EW_SILENT) == FAIL) | |
| 1901 num_files = 0; | |
| 1902 | |
| 1903 /* | |
| 1904 * When no swap file found, wildcard expansion might have failed (e.g. | |
| 1905 * not able to execute the shell). | |
| 1906 * Try finding a swap file by simply adding ".swp" to the file name. | |
| 1907 */ | |
| 2267 | 1908 if (*dirp == NUL && file_count + num_files == 0 && fname != NULL) |
| 7 | 1909 { |
|
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1910 stat_T st; |
| 7 | 1911 char_u *swapname; |
| 1912 | |
|
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1913 swapname = modname(fname_res, |
| 2823 | 1914 #if defined(VMS) |
|
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1915 (char_u *)"_swp", FALSE |
| 7 | 1916 #else |
|
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1917 (char_u *)".swp", TRUE |
| 7 | 1918 #endif |
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1919 ); |
| 7 | 1920 if (swapname != NULL) |
| 1921 { | |
| 1922 if (mch_stat((char *)swapname, &st) != -1) /* It exists! */ | |
| 1923 { | |
| 1924 files = (char_u **)alloc((unsigned)sizeof(char_u *)); | |
| 1925 if (files != NULL) | |
| 1926 { | |
| 1927 files[0] = swapname; | |
| 1928 swapname = NULL; | |
| 1929 num_files = 1; | |
| 1930 } | |
| 1931 } | |
| 1932 vim_free(swapname); | |
| 1933 } | |
| 1934 } | |
| 1935 | |
| 1936 /* | |
| 1937 * remove swapfile name of the current buffer, it must be ignored | |
| 1938 */ | |
| 1939 if (curbuf->b_ml.ml_mfp != NULL | |
| 1940 && (p = curbuf->b_ml.ml_mfp->mf_fname) != NULL) | |
| 1941 { | |
| 1942 for (i = 0; i < num_files; ++i) | |
| 1943 if (fullpathcmp(p, files[i], TRUE) & FPC_SAME) | |
| 1944 { | |
| 1855 | 1945 /* Remove the name from files[i]. Move further entries |
| 1946 * down. When the array becomes empty free it here, since | |
| 1947 * FreeWild() won't be called below. */ | |
| 7 | 1948 vim_free(files[i]); |
| 1855 | 1949 if (--num_files == 0) |
| 1950 vim_free(files); | |
| 1951 else | |
| 1952 for ( ; i < num_files; ++i) | |
| 1953 files[i] = files[i + 1]; | |
| 7 | 1954 } |
| 1955 } | |
| 838 | 1956 if (nr > 0) |
| 7 | 1957 { |
| 1958 file_count += num_files; | |
| 1959 if (nr <= file_count) | |
| 1960 { | |
| 2267 | 1961 *fname_out = vim_strsave( |
| 1962 files[nr - 1 + num_files - file_count]); | |
| 7 | 1963 dirp = (char_u *)""; /* stop searching */ |
| 1964 } | |
| 1965 } | |
| 1966 else if (list) | |
| 1967 { | |
| 1968 if (dir_name[0] == '.' && dir_name[1] == NUL) | |
| 1969 { | |
| 2267 | 1970 if (fname == NULL) |
| 7 | 1971 MSG_PUTS(_(" In current directory:\n")); |
| 1972 else | |
| 1973 MSG_PUTS(_(" Using specified name:\n")); | |
| 1974 } | |
| 1975 else | |
| 1976 { | |
| 1977 MSG_PUTS(_(" In directory ")); | |
| 1978 msg_home_replace(dir_name); | |
| 1979 MSG_PUTS(":\n"); | |
| 1980 } | |
| 1981 | |
| 1982 if (num_files) | |
| 1983 { | |
| 1984 for (i = 0; i < num_files; ++i) | |
| 1985 { | |
| 1986 /* print the swap file name */ | |
| 1987 msg_outnum((long)++file_count); | |
| 1988 MSG_PUTS(". "); | |
| 1989 msg_puts(gettail(files[i])); | |
| 1990 msg_putchar('\n'); | |
| 1991 (void)swapfile_info(files[i]); | |
| 1992 } | |
| 1993 } | |
| 1994 else | |
| 1995 MSG_PUTS(_(" -- none --\n")); | |
| 1996 out_flush(); | |
| 1997 } | |
| 1998 else | |
| 1999 file_count += num_files; | |
| 2000 | |
| 2001 for (i = 0; i < num_names; ++i) | |
| 2002 vim_free(names[i]); | |
| 838 | 2003 if (num_files > 0) |
| 2004 FreeWild(num_files, files); | |
| 7 | 2005 } |
| 2006 vim_free(dir_name); | |
| 2007 return file_count; | |
| 2008 } | |
| 2009 | |
| 2010 #if defined(UNIX) || defined(WIN3264) /* Need _very_ long file names */ | |
| 2011 /* | |
| 2012 * Append the full path to name with path separators made into percent | |
| 2013 * signs, to dir. An unnamed buffer is handled as "" (<currentdir>/"") | |
| 2014 */ | |
| 2015 static char_u * | |
|
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|
2016 make_percent_swname(char_u *dir, char_u *name) |
| 7 | 2017 { |
| 39 | 2018 char_u *d, *s, *f; |
| 7 | 2019 |
| 2020 f = fix_fname(name != NULL ? name : (char_u *) ""); | |
| 2021 d = NULL; | |
| 2022 if (f != NULL) | |
| 2023 { | |
| 2024 s = alloc((unsigned)(STRLEN(f) + 1)); | |
| 2025 if (s != NULL) | |
| 2026 { | |
| 39 | 2027 STRCPY(s, f); |
|
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2028 for (d = s; *d != NUL; MB_PTR_ADV(d)) |
| 39 | 2029 if (vim_ispathsep(*d)) |
| 2030 *d = '%'; | |
| 7 | 2031 d = concat_fnames(dir, s, TRUE); |
| 2032 vim_free(s); | |
| 2033 } | |
| 2034 vim_free(f); | |
| 2035 } | |
| 2036 return d; | |
| 2037 } | |
| 2038 #endif | |
| 2039 | |
|
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changeset
|
2040 #if (defined(UNIX) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)) |
| 7 | 2041 static int process_still_running; |
| 2042 #endif | |
| 2043 | |
| 2044 /* | |
| 580 | 2045 * Give information about an existing swap file. |
| 7 | 2046 * Returns timestamp (0 when unknown). |
| 2047 */ | |
| 2048 static time_t | |
|
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|
2049 swapfile_info(char_u *fname) |
| 7 | 2050 { |
|
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diff
changeset
|
2051 stat_T st; |
| 7 | 2052 int fd; |
| 2053 struct block0 b0; | |
| 2054 time_t x = (time_t)0; | |
| 1001 | 2055 char *p; |
| 7 | 2056 #ifdef UNIX |
| 2057 char_u uname[B0_UNAME_SIZE]; | |
| 2058 #endif | |
| 2059 | |
| 2060 /* print the swap file date */ | |
| 2061 if (mch_stat((char *)fname, &st) != -1) | |
| 2062 { | |
| 2063 #ifdef UNIX | |
| 2064 /* print name of owner of the file */ | |
| 2065 if (mch_get_uname(st.st_uid, uname, B0_UNAME_SIZE) == OK) | |
| 2066 { | |
| 2067 MSG_PUTS(_(" owned by: ")); | |
| 2068 msg_outtrans(uname); | |
| 2069 MSG_PUTS(_(" dated: ")); | |
| 2070 } | |
| 2071 else | |
| 2072 #endif | |
| 2073 MSG_PUTS(_(" dated: ")); | |
| 2074 x = st.st_mtime; /* Manx C can't do &st.st_mtime */ | |
| 1001 | 2075 p = ctime(&x); /* includes '\n' */ |
| 2076 if (p == NULL) | |
| 2077 MSG_PUTS("(invalid)\n"); | |
| 2078 else | |
| 2079 MSG_PUTS(p); | |
| 7 | 2080 } |
| 2081 | |
| 2082 /* | |
| 2083 * print the original file name | |
| 2084 */ | |
| 2085 fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
| 2086 if (fd >= 0) | |
| 2087 { | |
| 2664 | 2088 if (read_eintr(fd, &b0, sizeof(b0)) == sizeof(b0)) |
| 7 | 2089 { |
| 2090 if (STRNCMP(b0.b0_version, "VIM 3.0", 7) == 0) | |
| 2091 { | |
| 2092 MSG_PUTS(_(" [from Vim version 3.0]")); | |
| 2093 } | |
| 2267 | 2094 else if (ml_check_b0_id(&b0) == FAIL) |
| 7 | 2095 { |
| 2096 MSG_PUTS(_(" [does not look like a Vim swap file]")); | |
| 2097 } | |
| 2098 else | |
| 2099 { | |
| 2100 MSG_PUTS(_(" file name: ")); | |
| 2101 if (b0.b0_fname[0] == NUL) | |
| 9 | 2102 MSG_PUTS(_("[No Name]")); |
| 7 | 2103 else |
| 2104 msg_outtrans(b0.b0_fname); | |
| 2105 | |
| 2106 MSG_PUTS(_("\n modified: ")); | |
| 2107 MSG_PUTS(b0.b0_dirty ? _("YES") : _("no")); | |
| 2108 | |
| 2109 if (*(b0.b0_uname) != NUL) | |
| 2110 { | |
| 2111 MSG_PUTS(_("\n user name: ")); | |
| 2112 msg_outtrans(b0.b0_uname); | |
| 2113 } | |
| 2114 | |
| 2115 if (*(b0.b0_hname) != NUL) | |
| 2116 { | |
| 2117 if (*(b0.b0_uname) != NUL) | |
| 2118 MSG_PUTS(_(" host name: ")); | |
| 2119 else | |
| 2120 MSG_PUTS(_("\n host name: ")); | |
| 2121 msg_outtrans(b0.b0_hname); | |
| 2122 } | |
| 2123 | |
| 2124 if (char_to_long(b0.b0_pid) != 0L) | |
| 2125 { | |
| 2126 MSG_PUTS(_("\n process ID: ")); | |
| 2127 msg_outnum(char_to_long(b0.b0_pid)); | |
|
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diff
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|
2128 #if defined(UNIX) |
| 7 | 2129 /* EMX kill() not working correctly, it seems */ |
| 2130 if (kill((pid_t)char_to_long(b0.b0_pid), 0) == 0) | |
| 2131 { | |
| 2132 MSG_PUTS(_(" (still running)")); | |
| 2133 # if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) | |
| 2134 process_still_running = TRUE; | |
| 2135 # endif | |
| 2136 } | |
| 2137 #endif | |
| 2138 } | |
| 2139 | |
| 2140 if (b0_magic_wrong(&b0)) | |
| 2141 { | |
|
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|
2142 #if defined(MSWIN) |
| 7 | 2143 if (STRNCMP(b0.b0_hname, "PC ", 3) == 0) |
| 2144 MSG_PUTS(_("\n [not usable with this version of Vim]")); | |
| 2145 else | |
| 2146 #endif | |
| 2147 MSG_PUTS(_("\n [not usable on this computer]")); | |
| 2148 } | |
| 2149 } | |
| 2150 } | |
| 2151 else | |
| 2152 MSG_PUTS(_(" [cannot be read]")); | |
| 2153 close(fd); | |
| 2154 } | |
| 2155 else | |
| 2156 MSG_PUTS(_(" [cannot be opened]")); | |
| 2157 msg_putchar('\n'); | |
| 2158 | |
| 2159 return x; | |
| 2160 } | |
| 2161 | |
| 2162 static int | |
|
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changeset
|
2163 recov_file_names(char_u **names, char_u *path, int prepend_dot) |
| 7 | 2164 { |
| 2165 int num_names; | |
| 2166 | |
| 2167 /* | |
| 2168 * (Win32 and Win64) never short names, but do prepend a dot. | |
| 2169 * (Not MS-DOS or Win32 or Win64) maybe short name, maybe not: Try both. | |
| 2170 * Only use the short name if it is different. | |
| 2171 */ | |
| 2172 char_u *p; | |
| 2173 int i; | |
| 2174 # ifndef WIN3264 | |
| 2175 int shortname = curbuf->b_shortname; | |
| 2176 | |
| 2177 curbuf->b_shortname = FALSE; | |
| 2178 # endif | |
| 2179 | |
| 2180 num_names = 0; | |
| 2181 | |
| 2182 /* | |
| 2183 * May also add the file name with a dot prepended, for swap file in same | |
| 2184 * dir as original file. | |
| 2185 */ | |
| 2186 if (prepend_dot) | |
| 2187 { | |
| 2188 names[num_names] = modname(path, (char_u *)".sw?", TRUE); | |
| 2189 if (names[num_names] == NULL) | |
| 2190 goto end; | |
| 2191 ++num_names; | |
| 2192 } | |
| 2193 | |
| 2194 /* | |
| 2195 * Form the normal swap file name pattern by appending ".sw?". | |
| 2196 */ | |
| 2197 #ifdef VMS | |
| 2198 names[num_names] = concat_fnames(path, (char_u *)"_sw%", FALSE); | |
| 2199 #else | |
| 2200 names[num_names] = concat_fnames(path, (char_u *)".sw?", FALSE); | |
| 2201 #endif | |
| 2202 if (names[num_names] == NULL) | |
| 2203 goto end; | |
| 2204 if (num_names >= 1) /* check if we have the same name twice */ | |
| 2205 { | |
| 2206 p = names[num_names - 1]; | |
| 2207 i = (int)STRLEN(names[num_names - 1]) - (int)STRLEN(names[num_names]); | |
| 2208 if (i > 0) | |
| 2209 p += i; /* file name has been expanded to full path */ | |
| 2210 | |
| 2211 if (STRCMP(p, names[num_names]) != 0) | |
| 2212 ++num_names; | |
| 2213 else | |
| 2214 vim_free(names[num_names]); | |
| 2215 } | |
| 2216 else | |
| 2217 ++num_names; | |
| 2218 | |
| 2219 # ifndef WIN3264 | |
| 2220 /* | |
| 2221 * Also try with 'shortname' set, in case the file is on a DOS filesystem. | |
| 2222 */ | |
| 2223 curbuf->b_shortname = TRUE; | |
| 2224 #ifdef VMS | |
| 2225 names[num_names] = modname(path, (char_u *)"_sw%", FALSE); | |
| 2226 #else | |
| 2227 names[num_names] = modname(path, (char_u *)".sw?", FALSE); | |
| 2228 #endif | |
| 2229 if (names[num_names] == NULL) | |
| 2230 goto end; | |
| 2231 | |
| 2232 /* | |
| 2233 * Remove the one from 'shortname', if it's the same as with 'noshortname'. | |
| 2234 */ | |
| 2235 p = names[num_names]; | |
| 2236 i = STRLEN(names[num_names]) - STRLEN(names[num_names - 1]); | |
| 2237 if (i > 0) | |
| 2238 p += i; /* file name has been expanded to full path */ | |
| 2239 if (STRCMP(names[num_names - 1], p) == 0) | |
| 2240 vim_free(names[num_names]); | |
| 2241 else | |
| 2242 ++num_names; | |
| 2243 # endif | |
| 2244 | |
| 2245 end: | |
| 2246 # ifndef WIN3264 | |
| 2247 curbuf->b_shortname = shortname; | |
| 2248 # endif | |
| 2249 | |
| 2250 return num_names; | |
| 2251 } | |
| 2252 | |
| 2253 /* | |
| 2254 * sync all memlines | |
| 2255 * | |
| 2256 * If 'check_file' is TRUE, check if original file exists and was not changed. | |
| 2257 * If 'check_char' is TRUE, stop syncing when character becomes available, but | |
| 2258 * always sync at least one block. | |
| 2259 */ | |
| 2260 void | |
|
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diff
changeset
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2261 ml_sync_all(int check_file, int check_char) |
| 7 | 2262 { |
| 2263 buf_T *buf; | |
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2264 stat_T st; |
| 7 | 2265 |
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2266 FOR_ALL_BUFFERS(buf) |
| 7 | 2267 { |
| 2268 if (buf->b_ml.ml_mfp == NULL || buf->b_ml.ml_mfp->mf_fname == NULL) | |
| 2269 continue; /* no file */ | |
| 2270 | |
| 2271 ml_flush_line(buf); /* flush buffered line */ | |
| 2272 /* flush locked block */ | |
| 2273 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); | |
| 2274 if (bufIsChanged(buf) && check_file && mf_need_trans(buf->b_ml.ml_mfp) | |
| 2275 && buf->b_ffname != NULL) | |
| 2276 { | |
| 2277 /* | |
| 2278 * If the original file does not exist anymore or has been changed | |
| 2279 * call ml_preserve() to get rid of all negative numbered blocks. | |
| 2280 */ | |
| 2281 if (mch_stat((char *)buf->b_ffname, &st) == -1 | |
| 2282 || st.st_mtime != buf->b_mtime_read | |
|
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|
2283 || st.st_size != buf->b_orig_size) |
| 7 | 2284 { |
| 2285 ml_preserve(buf, FALSE); | |
| 2286 did_check_timestamps = FALSE; | |
| 2287 need_check_timestamps = TRUE; /* give message later */ | |
| 2288 } | |
| 2289 } | |
| 2290 if (buf->b_ml.ml_mfp->mf_dirty) | |
| 2291 { | |
| 2292 (void)mf_sync(buf->b_ml.ml_mfp, (check_char ? MFS_STOP : 0) | |
| 2293 | (bufIsChanged(buf) ? MFS_FLUSH : 0)); | |
| 2294 if (check_char && ui_char_avail()) /* character available now */ | |
| 2295 break; | |
| 2296 } | |
| 2297 } | |
| 2298 } | |
| 2299 | |
| 2300 /* | |
| 2301 * sync one buffer, including negative blocks | |
| 2302 * | |
| 2303 * after this all the blocks are in the swap file | |
| 2304 * | |
| 2305 * Used for the :preserve command and when the original file has been | |
| 2306 * changed or deleted. | |
| 2307 * | |
| 2308 * when message is TRUE the success of preserving is reported | |
| 2309 */ | |
| 2310 void | |
|
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diff
changeset
|
2311 ml_preserve(buf_T *buf, int message) |
| 7 | 2312 { |
| 2313 bhdr_T *hp; | |
| 2314 linenr_T lnum; | |
| 2315 memfile_T *mfp = buf->b_ml.ml_mfp; | |
| 2316 int status; | |
| 2317 int got_int_save = got_int; | |
| 2318 | |
| 2319 if (mfp == NULL || mfp->mf_fname == NULL) | |
| 2320 { | |
| 2321 if (message) | |
| 2322 EMSG(_("E313: Cannot preserve, there is no swap file")); | |
| 2323 return; | |
| 2324 } | |
| 2325 | |
| 2326 /* We only want to stop when interrupted here, not when interrupted | |
| 2327 * before. */ | |
| 2328 got_int = FALSE; | |
| 2329 | |
| 2330 ml_flush_line(buf); /* flush buffered line */ | |
| 2331 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
| 2332 status = mf_sync(mfp, MFS_ALL | MFS_FLUSH); | |
| 2333 | |
| 2334 /* stack is invalid after mf_sync(.., MFS_ALL) */ | |
| 2335 buf->b_ml.ml_stack_top = 0; | |
| 2336 | |
| 2337 /* | |
| 2338 * Some of the data blocks may have been changed from negative to | |
| 2339 * positive block number. In that case the pointer blocks need to be | |
| 2340 * updated. | |
| 2341 * | |
| 2342 * We don't know in which pointer block the references are, so we visit | |
| 2343 * all data blocks until there are no more translations to be done (or | |
| 2344 * we hit the end of the file, which can only happen in case a write fails, | |
| 2345 * e.g. when file system if full). | |
| 2346 * ml_find_line() does the work by translating the negative block numbers | |
| 2347 * when getting the first line of each data block. | |
| 2348 */ | |
| 2349 if (mf_need_trans(mfp) && !got_int) | |
| 2350 { | |
| 2351 lnum = 1; | |
| 2352 while (mf_need_trans(mfp) && lnum <= buf->b_ml.ml_line_count) | |
| 2353 { | |
| 2354 hp = ml_find_line(buf, lnum, ML_FIND); | |
| 2355 if (hp == NULL) | |
| 2356 { | |
| 2357 status = FAIL; | |
| 2358 goto theend; | |
| 2359 } | |
| 2360 CHECK(buf->b_ml.ml_locked_low != lnum, "low != lnum"); | |
| 2361 lnum = buf->b_ml.ml_locked_high + 1; | |
| 2362 } | |
| 2363 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
| 2364 /* sync the updated pointer blocks */ | |
| 2365 if (mf_sync(mfp, MFS_ALL | MFS_FLUSH) == FAIL) | |
| 2366 status = FAIL; | |
| 2367 buf->b_ml.ml_stack_top = 0; /* stack is invalid now */ | |
| 2368 } | |
| 2369 theend: | |
| 2370 got_int |= got_int_save; | |
| 2371 | |
| 2372 if (message) | |
| 2373 { | |
| 2374 if (status == OK) | |
| 2375 MSG(_("File preserved")); | |
| 2376 else | |
| 2377 EMSG(_("E314: Preserve failed")); | |
| 2378 } | |
| 2379 } | |
| 2380 | |
| 2381 /* | |
| 2382 * NOTE: The pointer returned by the ml_get_*() functions only remains valid | |
| 2383 * until the next call! | |
| 2384 * line1 = ml_get(1); | |
| 2385 * line2 = ml_get(2); // line1 is now invalid! | |
| 2386 * Make a copy of the line if necessary. | |
| 2387 */ | |
| 2388 /* | |
| 2657 | 2389 * Return a pointer to a (read-only copy of a) line. |
| 7 | 2390 * |
| 2391 * On failure an error message is given and IObuff is returned (to avoid | |
| 2392 * having to check for error everywhere). | |
| 2393 */ | |
| 2394 char_u * | |
|
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|
2395 ml_get(linenr_T lnum) |
| 7 | 2396 { |
| 2397 return ml_get_buf(curbuf, lnum, FALSE); | |
| 2398 } | |
| 2399 | |
| 2400 /* | |
| 2657 | 2401 * Return pointer to position "pos". |
| 7 | 2402 */ |
| 2403 char_u * | |
|
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|
2404 ml_get_pos(pos_T *pos) |
| 7 | 2405 { |
| 2406 return (ml_get_buf(curbuf, pos->lnum, FALSE) + pos->col); | |
| 2407 } | |
| 2408 | |
| 2409 /* | |
| 2657 | 2410 * Return pointer to cursor line. |
| 7 | 2411 */ |
| 2412 char_u * | |
|
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|
2413 ml_get_curline(void) |
| 7 | 2414 { |
| 2415 return ml_get_buf(curbuf, curwin->w_cursor.lnum, FALSE); | |
| 2416 } | |
| 2417 | |
| 2418 /* | |
| 2657 | 2419 * Return pointer to cursor position. |
| 7 | 2420 */ |
| 2421 char_u * | |
|
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|
2422 ml_get_cursor(void) |
| 7 | 2423 { |
| 2424 return (ml_get_buf(curbuf, curwin->w_cursor.lnum, FALSE) + | |
| 2425 curwin->w_cursor.col); | |
| 2426 } | |
| 2427 | |
| 2428 /* | |
| 2657 | 2429 * Return a pointer to a line in a specific buffer |
| 7 | 2430 * |
| 2431 * "will_change": if TRUE mark the buffer dirty (chars in the line will be | |
| 2432 * changed) | |
| 2433 */ | |
| 2434 char_u * | |
|
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|
2435 ml_get_buf( |
|
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|
2436 buf_T *buf, |
|
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|
2437 linenr_T lnum, |
|
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|
2438 int will_change) /* line will be changed */ |
| 7 | 2439 { |
| 1068 | 2440 bhdr_T *hp; |
| 2441 DATA_BL *dp; | |
| 2442 char_u *ptr; | |
| 2443 static int recursive = 0; | |
| 7 | 2444 |
| 2445 if (lnum > buf->b_ml.ml_line_count) /* invalid line number */ | |
| 2446 { | |
| 1068 | 2447 if (recursive == 0) |
| 2448 { | |
| 2449 /* Avoid giving this message for a recursive call, may happen when | |
| 2450 * the GUI redraws part of the text. */ | |
| 2451 ++recursive; | |
|
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|
2452 IEMSGN(_("E315: ml_get: invalid lnum: %ld"), lnum); |
| 1068 | 2453 --recursive; |
| 2454 } | |
| 7 | 2455 errorret: |
| 2456 STRCPY(IObuff, "???"); | |
| 2457 return IObuff; | |
| 2458 } | |
| 2459 if (lnum <= 0) /* pretend line 0 is line 1 */ | |
| 2460 lnum = 1; | |
| 2461 | |
| 2462 if (buf->b_ml.ml_mfp == NULL) /* there are no lines */ | |
| 2463 return (char_u *)""; | |
| 2464 | |
|
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2465 /* |
|
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2466 * See if it is the same line as requested last time. |
|
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2467 * Otherwise may need to flush last used line. |
|
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|
2468 * Don't use the last used line when 'swapfile' is reset, need to load all |
|
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|
2469 * blocks. |
|
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|
2470 */ |
| 1066 | 2471 if (buf->b_ml.ml_line_lnum != lnum || mf_dont_release) |
| 7 | 2472 { |
| 2473 ml_flush_line(buf); | |
| 2474 | |
| 2475 /* | |
| 2476 * Find the data block containing the line. | |
| 2477 * This also fills the stack with the blocks from the root to the data | |
| 2478 * block and releases any locked block. | |
| 2479 */ | |
| 2480 if ((hp = ml_find_line(buf, lnum, ML_FIND)) == NULL) | |
| 2481 { | |
| 1068 | 2482 if (recursive == 0) |
| 2483 { | |
| 2484 /* Avoid giving this message for a recursive call, may happen | |
| 2485 * when the GUI redraws part of the text. */ | |
| 2486 ++recursive; | |
|
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|
2487 IEMSGN(_("E316: ml_get: cannot find line %ld"), lnum); |
| 1068 | 2488 --recursive; |
| 2489 } | |
| 7 | 2490 goto errorret; |
| 2491 } | |
| 2492 | |
| 2493 dp = (DATA_BL *)(hp->bh_data); | |
| 2494 | |
| 2495 ptr = (char_u *)dp + ((dp->db_index[lnum - buf->b_ml.ml_locked_low]) & DB_INDEX_MASK); | |
| 2496 buf->b_ml.ml_line_ptr = ptr; | |
| 2497 buf->b_ml.ml_line_lnum = lnum; | |
| 2498 buf->b_ml.ml_flags &= ~ML_LINE_DIRTY; | |
| 2499 } | |
| 2500 if (will_change) | |
| 2501 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 2502 | |
| 2503 return buf->b_ml.ml_line_ptr; | |
| 2504 } | |
| 2505 | |
| 2506 /* | |
| 2507 * Check if a line that was just obtained by a call to ml_get | |
| 2508 * is in allocated memory. | |
| 2509 */ | |
| 2510 int | |
|
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|
2511 ml_line_alloced(void) |
| 7 | 2512 { |
| 2513 return (curbuf->b_ml.ml_flags & ML_LINE_DIRTY); | |
| 2514 } | |
| 2515 | |
| 2516 /* | |
| 2517 * Append a line after lnum (may be 0 to insert a line in front of the file). | |
| 2518 * "line" does not need to be allocated, but can't be another line in a | |
| 2519 * buffer, unlocking may make it invalid. | |
| 2520 * | |
| 2521 * newfile: TRUE when starting to edit a new file, meaning that pe_old_lnum | |
| 2522 * will be set for recovery | |
| 2523 * Check: The caller of this function should probably also call | |
| 2524 * appended_lines(). | |
| 2525 * | |
| 2526 * return FAIL for failure, OK otherwise | |
| 2527 */ | |
| 2528 int | |
|
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|
2529 ml_append( |
|
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|
2530 linenr_T lnum, /* append after this line (can be 0) */ |
|
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|
2531 char_u *line, /* text of the new line */ |
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|
2532 colnr_T len, /* length of new line, including NUL, or 0 */ |
|
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|
2533 int newfile) /* flag, see above */ |
| 7 | 2534 { |
| 2535 /* When starting up, we might still need to create the memfile */ | |
|
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|
2536 if (curbuf->b_ml.ml_mfp == NULL && open_buffer(FALSE, NULL, 0) == FAIL) |
| 7 | 2537 return FAIL; |
| 2538 | |
| 2539 if (curbuf->b_ml.ml_line_lnum != 0) | |
| 2540 ml_flush_line(curbuf); | |
| 2541 return ml_append_int(curbuf, lnum, line, len, newfile, FALSE); | |
| 2542 } | |
| 2543 | |
|
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2544 #if defined(FEAT_SPELL) || defined(FEAT_QUICKFIX) || defined(PROTO) |
| 625 | 2545 /* |
| 2546 * Like ml_append() but for an arbitrary buffer. The buffer must already have | |
| 2547 * a memline. | |
| 2548 */ | |
| 2549 int | |
|
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|
2550 ml_append_buf( |
|
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|
2551 buf_T *buf, |
|
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|
2552 linenr_T lnum, /* append after this line (can be 0) */ |
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|
2553 char_u *line, /* text of the new line */ |
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|
2554 colnr_T len, /* length of new line, including NUL, or 0 */ |
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|
2555 int newfile) /* flag, see above */ |
| 625 | 2556 { |
| 2557 if (buf->b_ml.ml_mfp == NULL) | |
| 2558 return FAIL; | |
| 2559 | |
| 2560 if (buf->b_ml.ml_line_lnum != 0) | |
| 2561 ml_flush_line(buf); | |
| 2562 return ml_append_int(buf, lnum, line, len, newfile, FALSE); | |
| 2563 } | |
| 2564 #endif | |
| 2565 | |
| 7 | 2566 static int |
|
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2567 ml_append_int( |
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2568 buf_T *buf, |
|
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|
2569 linenr_T lnum, /* append after this line (can be 0) */ |
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|
2570 char_u *line, /* text of the new line */ |
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|
2571 colnr_T len, /* length of line, including NUL, or 0 */ |
|
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|
2572 int newfile, /* flag, see above */ |
|
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|
2573 int mark) /* mark the new line */ |
| 7 | 2574 { |
| 2575 int i; | |
| 2576 int line_count; /* number of indexes in current block */ | |
| 2577 int offset; | |
| 2578 int from, to; | |
| 2579 int space_needed; /* space needed for new line */ | |
| 2580 int page_size; | |
| 2581 int page_count; | |
| 2582 int db_idx; /* index for lnum in data block */ | |
| 2583 bhdr_T *hp; | |
| 2584 memfile_T *mfp; | |
| 2585 DATA_BL *dp; | |
| 2586 PTR_BL *pp; | |
| 2587 infoptr_T *ip; | |
| 2588 | |
| 2589 /* lnum out of range */ | |
| 2590 if (lnum > buf->b_ml.ml_line_count || buf->b_ml.ml_mfp == NULL) | |
| 2591 return FAIL; | |
| 2592 | |
| 2593 if (lowest_marked && lowest_marked > lnum) | |
| 2594 lowest_marked = lnum + 1; | |
| 2595 | |
| 2596 if (len == 0) | |
| 2597 len = (colnr_T)STRLEN(line) + 1; /* space needed for the text */ | |
| 2598 space_needed = len + INDEX_SIZE; /* space needed for text + index */ | |
| 2599 | |
| 2600 mfp = buf->b_ml.ml_mfp; | |
| 2601 page_size = mfp->mf_page_size; | |
| 2602 | |
| 2603 /* | |
| 2604 * find the data block containing the previous line | |
| 2605 * This also fills the stack with the blocks from the root to the data block | |
| 2606 * This also releases any locked block. | |
| 2607 */ | |
| 2608 if ((hp = ml_find_line(buf, lnum == 0 ? (linenr_T)1 : lnum, | |
| 2609 ML_INSERT)) == NULL) | |
| 2610 return FAIL; | |
| 2611 | |
| 2612 buf->b_ml.ml_flags &= ~ML_EMPTY; | |
| 2613 | |
| 2614 if (lnum == 0) /* got line one instead, correct db_idx */ | |
| 2615 db_idx = -1; /* careful, it is negative! */ | |
| 2616 else | |
| 2617 db_idx = lnum - buf->b_ml.ml_locked_low; | |
| 2618 /* get line count before the insertion */ | |
| 2619 line_count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low; | |
| 2620 | |
| 2621 dp = (DATA_BL *)(hp->bh_data); | |
| 2622 | |
| 2623 /* | |
| 2624 * If | |
| 2625 * - there is not enough room in the current block | |
| 2626 * - appending to the last line in the block | |
| 2627 * - not appending to the last line in the file | |
| 2628 * insert in front of the next block. | |
| 2629 */ | |
| 2630 if ((int)dp->db_free < space_needed && db_idx == line_count - 1 | |
| 2631 && lnum < buf->b_ml.ml_line_count) | |
| 2632 { | |
| 2633 /* | |
| 2634 * Now that the line is not going to be inserted in the block that we | |
| 2635 * expected, the line count has to be adjusted in the pointer blocks | |
| 2636 * by using ml_locked_lineadd. | |
| 2637 */ | |
| 2638 --(buf->b_ml.ml_locked_lineadd); | |
| 2639 --(buf->b_ml.ml_locked_high); | |
| 2640 if ((hp = ml_find_line(buf, lnum + 1, ML_INSERT)) == NULL) | |
| 2641 return FAIL; | |
| 2642 | |
| 2643 db_idx = -1; /* careful, it is negative! */ | |
| 2644 /* get line count before the insertion */ | |
| 2645 line_count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low; | |
| 2646 CHECK(buf->b_ml.ml_locked_low != lnum + 1, "locked_low != lnum + 1"); | |
| 2647 | |
| 2648 dp = (DATA_BL *)(hp->bh_data); | |
| 2649 } | |
| 2650 | |
| 2651 ++buf->b_ml.ml_line_count; | |
| 2652 | |
| 2653 if ((int)dp->db_free >= space_needed) /* enough room in data block */ | |
| 2654 { | |
| 2655 /* | |
| 2656 * Insert new line in existing data block, or in data block allocated above. | |
| 2657 */ | |
| 2658 dp->db_txt_start -= len; | |
| 2659 dp->db_free -= space_needed; | |
| 2660 ++(dp->db_line_count); | |
| 2661 | |
| 2662 /* | |
| 2663 * move the text of the lines that follow to the front | |
| 2664 * adjust the indexes of the lines that follow | |
| 2665 */ | |
| 2666 if (line_count > db_idx + 1) /* if there are following lines */ | |
| 2667 { | |
| 2668 /* | |
| 2669 * Offset is the start of the previous line. | |
| 2670 * This will become the character just after the new line. | |
| 2671 */ | |
| 2672 if (db_idx < 0) | |
| 2673 offset = dp->db_txt_end; | |
| 2674 else | |
| 2675 offset = ((dp->db_index[db_idx]) & DB_INDEX_MASK); | |
| 2676 mch_memmove((char *)dp + dp->db_txt_start, | |
| 2677 (char *)dp + dp->db_txt_start + len, | |
| 2678 (size_t)(offset - (dp->db_txt_start + len))); | |
| 2679 for (i = line_count - 1; i > db_idx; --i) | |
| 2680 dp->db_index[i + 1] = dp->db_index[i] - len; | |
| 2681 dp->db_index[db_idx + 1] = offset - len; | |
| 2682 } | |
| 2683 else /* add line at the end */ | |
| 2684 dp->db_index[db_idx + 1] = dp->db_txt_start; | |
| 2685 | |
| 2686 /* | |
| 2687 * copy the text into the block | |
| 2688 */ | |
| 2689 mch_memmove((char *)dp + dp->db_index[db_idx + 1], line, (size_t)len); | |
| 2690 if (mark) | |
| 2691 dp->db_index[db_idx + 1] |= DB_MARKED; | |
| 2692 | |
| 2693 /* | |
| 2694 * Mark the block dirty. | |
| 2695 */ | |
| 2696 buf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 2697 if (!newfile) | |
| 2698 buf->b_ml.ml_flags |= ML_LOCKED_POS; | |
| 2699 } | |
| 2700 else /* not enough space in data block */ | |
| 2701 { | |
| 2702 /* | |
| 2703 * If there is not enough room we have to create a new data block and copy some | |
| 2704 * lines into it. | |
| 2705 * Then we have to insert an entry in the pointer block. | |
| 2706 * If this pointer block also is full, we go up another block, and so on, up | |
| 2707 * to the root if necessary. | |
| 2708 * The line counts in the pointer blocks have already been adjusted by | |
| 2709 * ml_find_line(). | |
| 2710 */ | |
| 2711 long line_count_left, line_count_right; | |
| 2712 int page_count_left, page_count_right; | |
| 2713 bhdr_T *hp_left; | |
| 2714 bhdr_T *hp_right; | |
| 2715 bhdr_T *hp_new; | |
| 2716 int lines_moved; | |
| 2717 int data_moved = 0; /* init to shut up gcc */ | |
| 2718 int total_moved = 0; /* init to shut up gcc */ | |
| 2719 DATA_BL *dp_right, *dp_left; | |
| 2720 int stack_idx; | |
| 2721 int in_left; | |
| 2722 int lineadd; | |
| 2723 blocknr_T bnum_left, bnum_right; | |
| 2724 linenr_T lnum_left, lnum_right; | |
| 2725 int pb_idx; | |
| 2726 PTR_BL *pp_new; | |
| 2727 | |
| 2728 /* | |
| 2729 * We are going to allocate a new data block. Depending on the | |
| 2730 * situation it will be put to the left or right of the existing | |
| 2731 * block. If possible we put the new line in the left block and move | |
| 2732 * the lines after it to the right block. Otherwise the new line is | |
| 2733 * also put in the right block. This method is more efficient when | |
| 2734 * inserting a lot of lines at one place. | |
| 2735 */ | |
| 2736 if (db_idx < 0) /* left block is new, right block is existing */ | |
| 2737 { | |
| 2738 lines_moved = 0; | |
| 2739 in_left = TRUE; | |
| 2740 /* space_needed does not change */ | |
| 2741 } | |
| 2742 else /* left block is existing, right block is new */ | |
| 2743 { | |
| 2744 lines_moved = line_count - db_idx - 1; | |
| 2745 if (lines_moved == 0) | |
| 2746 in_left = FALSE; /* put new line in right block */ | |
| 2747 /* space_needed does not change */ | |
| 2748 else | |
| 2749 { | |
| 2750 data_moved = ((dp->db_index[db_idx]) & DB_INDEX_MASK) - | |
| 2751 dp->db_txt_start; | |
| 2752 total_moved = data_moved + lines_moved * INDEX_SIZE; | |
| 2753 if ((int)dp->db_free + total_moved >= space_needed) | |
| 2754 { | |
| 2755 in_left = TRUE; /* put new line in left block */ | |
| 2756 space_needed = total_moved; | |
| 2757 } | |
| 2758 else | |
| 2759 { | |
| 2760 in_left = FALSE; /* put new line in right block */ | |
| 2761 space_needed += total_moved; | |
| 2762 } | |
| 2763 } | |
| 2764 } | |
| 2765 | |
| 2766 page_count = ((space_needed + HEADER_SIZE) + page_size - 1) / page_size; | |
| 2767 if ((hp_new = ml_new_data(mfp, newfile, page_count)) == NULL) | |
| 2768 { | |
| 2769 /* correct line counts in pointer blocks */ | |
| 2770 --(buf->b_ml.ml_locked_lineadd); | |
| 2771 --(buf->b_ml.ml_locked_high); | |
| 2772 return FAIL; | |
| 2773 } | |
| 2774 if (db_idx < 0) /* left block is new */ | |
| 2775 { | |
| 2776 hp_left = hp_new; | |
| 2777 hp_right = hp; | |
| 2778 line_count_left = 0; | |
| 2779 line_count_right = line_count; | |
| 2780 } | |
| 2781 else /* right block is new */ | |
| 2782 { | |
| 2783 hp_left = hp; | |
| 2784 hp_right = hp_new; | |
| 2785 line_count_left = line_count; | |
| 2786 line_count_right = 0; | |
| 2787 } | |
| 2788 dp_right = (DATA_BL *)(hp_right->bh_data); | |
| 2789 dp_left = (DATA_BL *)(hp_left->bh_data); | |
| 2790 bnum_left = hp_left->bh_bnum; | |
| 2791 bnum_right = hp_right->bh_bnum; | |
| 2792 page_count_left = hp_left->bh_page_count; | |
| 2793 page_count_right = hp_right->bh_page_count; | |
| 2794 | |
| 2795 /* | |
| 2796 * May move the new line into the right/new block. | |
| 2797 */ | |
| 2798 if (!in_left) | |
| 2799 { | |
| 2800 dp_right->db_txt_start -= len; | |
| 2801 dp_right->db_free -= len + INDEX_SIZE; | |
| 2802 dp_right->db_index[0] = dp_right->db_txt_start; | |
| 2803 if (mark) | |
| 2804 dp_right->db_index[0] |= DB_MARKED; | |
| 2805 | |
| 2806 mch_memmove((char *)dp_right + dp_right->db_txt_start, | |
| 2807 line, (size_t)len); | |
| 2808 ++line_count_right; | |
| 2809 } | |
| 2810 /* | |
| 2811 * may move lines from the left/old block to the right/new one. | |
| 2812 */ | |
| 2813 if (lines_moved) | |
| 2814 { | |
| 2815 /* | |
| 2816 */ | |
| 2817 dp_right->db_txt_start -= data_moved; | |
| 2818 dp_right->db_free -= total_moved; | |
| 2819 mch_memmove((char *)dp_right + dp_right->db_txt_start, | |
| 2820 (char *)dp_left + dp_left->db_txt_start, | |
| 2821 (size_t)data_moved); | |
| 2822 offset = dp_right->db_txt_start - dp_left->db_txt_start; | |
| 2823 dp_left->db_txt_start += data_moved; | |
| 2824 dp_left->db_free += total_moved; | |
| 2825 | |
| 2826 /* | |
| 2827 * update indexes in the new block | |
| 2828 */ | |
| 2829 for (to = line_count_right, from = db_idx + 1; | |
| 2830 from < line_count_left; ++from, ++to) | |
| 2831 dp_right->db_index[to] = dp->db_index[from] + offset; | |
| 2832 line_count_right += lines_moved; | |
| 2833 line_count_left -= lines_moved; | |
| 2834 } | |
| 2835 | |
| 2836 /* | |
| 2837 * May move the new line into the left (old or new) block. | |
| 2838 */ | |
| 2839 if (in_left) | |
| 2840 { | |
| 2841 dp_left->db_txt_start -= len; | |
| 2842 dp_left->db_free -= len + INDEX_SIZE; | |
| 2843 dp_left->db_index[line_count_left] = dp_left->db_txt_start; | |
| 2844 if (mark) | |
| 2845 dp_left->db_index[line_count_left] |= DB_MARKED; | |
| 2846 mch_memmove((char *)dp_left + dp_left->db_txt_start, | |
| 2847 line, (size_t)len); | |
| 2848 ++line_count_left; | |
| 2849 } | |
| 2850 | |
| 2851 if (db_idx < 0) /* left block is new */ | |
| 2852 { | |
| 2853 lnum_left = lnum + 1; | |
| 2854 lnum_right = 0; | |
| 2855 } | |
| 2856 else /* right block is new */ | |
| 2857 { | |
| 2858 lnum_left = 0; | |
| 2859 if (in_left) | |
| 2860 lnum_right = lnum + 2; | |
| 2861 else | |
| 2862 lnum_right = lnum + 1; | |
| 2863 } | |
| 2864 dp_left->db_line_count = line_count_left; | |
| 2865 dp_right->db_line_count = line_count_right; | |
| 2866 | |
| 2867 /* | |
| 2868 * release the two data blocks | |
| 2869 * The new one (hp_new) already has a correct blocknumber. | |
| 2870 * The old one (hp, in ml_locked) gets a positive blocknumber if | |
| 2871 * we changed it and we are not editing a new file. | |
| 2872 */ | |
| 2873 if (lines_moved || in_left) | |
| 2874 buf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 2875 if (!newfile && db_idx >= 0 && in_left) | |
| 2876 buf->b_ml.ml_flags |= ML_LOCKED_POS; | |
| 2877 mf_put(mfp, hp_new, TRUE, FALSE); | |
| 2878 | |
| 2879 /* | |
| 2880 * flush the old data block | |
| 2881 * set ml_locked_lineadd to 0, because the updating of the | |
| 2882 * pointer blocks is done below | |
| 2883 */ | |
| 2884 lineadd = buf->b_ml.ml_locked_lineadd; | |
| 2885 buf->b_ml.ml_locked_lineadd = 0; | |
| 2886 ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush data block */ | |
| 2887 | |
| 2888 /* | |
| 2889 * update pointer blocks for the new data block | |
| 2890 */ | |
| 2891 for (stack_idx = buf->b_ml.ml_stack_top - 1; stack_idx >= 0; | |
| 2892 --stack_idx) | |
| 2893 { | |
| 2894 ip = &(buf->b_ml.ml_stack[stack_idx]); | |
| 2895 pb_idx = ip->ip_index; | |
| 2896 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
| 2897 return FAIL; | |
| 2898 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
| 2899 if (pp->pb_id != PTR_ID) | |
| 2900 { | |
|
10359
66f1b5bf3fa6
commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
2901 IEMSG(_("E317: pointer block id wrong 3")); |
| 7 | 2902 mf_put(mfp, hp, FALSE, FALSE); |
| 2903 return FAIL; | |
| 2904 } | |
| 2905 /* | |
| 2906 * TODO: If the pointer block is full and we are adding at the end | |
| 2907 * try to insert in front of the next block | |
| 2908 */ | |
| 2909 /* block not full, add one entry */ | |
| 2910 if (pp->pb_count < pp->pb_count_max) | |
| 2911 { | |
| 2912 if (pb_idx + 1 < (int)pp->pb_count) | |
| 2913 mch_memmove(&pp->pb_pointer[pb_idx + 2], | |
| 2914 &pp->pb_pointer[pb_idx + 1], | |
| 2915 (size_t)(pp->pb_count - pb_idx - 1) * sizeof(PTR_EN)); | |
| 2916 ++pp->pb_count; | |
| 2917 pp->pb_pointer[pb_idx].pe_line_count = line_count_left; | |
| 2918 pp->pb_pointer[pb_idx].pe_bnum = bnum_left; | |
| 2919 pp->pb_pointer[pb_idx].pe_page_count = page_count_left; | |
| 2920 pp->pb_pointer[pb_idx + 1].pe_line_count = line_count_right; | |
| 2921 pp->pb_pointer[pb_idx + 1].pe_bnum = bnum_right; | |
| 2922 pp->pb_pointer[pb_idx + 1].pe_page_count = page_count_right; | |
| 2923 | |
| 2924 if (lnum_left != 0) | |
| 2925 pp->pb_pointer[pb_idx].pe_old_lnum = lnum_left; | |
| 2926 if (lnum_right != 0) | |
| 2927 pp->pb_pointer[pb_idx + 1].pe_old_lnum = lnum_right; | |
| 2928 | |
| 2929 mf_put(mfp, hp, TRUE, FALSE); | |
| 2930 buf->b_ml.ml_stack_top = stack_idx + 1; /* truncate stack */ | |
| 2931 | |
| 2932 if (lineadd) | |
| 2933 { | |
| 2934 --(buf->b_ml.ml_stack_top); | |
| 1167 | 2935 /* fix line count for rest of blocks in the stack */ |
| 7 | 2936 ml_lineadd(buf, lineadd); |
| 2937 /* fix stack itself */ | |
| 2938 buf->b_ml.ml_stack[buf->b_ml.ml_stack_top].ip_high += | |
| 2939 lineadd; | |
| 2940 ++(buf->b_ml.ml_stack_top); | |
| 2941 } | |
| 2942 | |
| 2943 /* | |
| 2944 * We are finished, break the loop here. | |
| 2945 */ | |
| 2946 break; | |
| 2947 } | |
| 2948 else /* pointer block full */ | |
| 2949 { | |
| 2950 /* | |
| 2951 * split the pointer block | |
| 2952 * allocate a new pointer block | |
| 2953 * move some of the pointer into the new block | |
| 2954 * prepare for updating the parent block | |
| 2955 */ | |
| 2956 for (;;) /* do this twice when splitting block 1 */ | |
| 2957 { | |
| 2958 hp_new = ml_new_ptr(mfp); | |
| 2959 if (hp_new == NULL) /* TODO: try to fix tree */ | |
| 2960 return FAIL; | |
| 2961 pp_new = (PTR_BL *)(hp_new->bh_data); | |
| 2962 | |
| 2963 if (hp->bh_bnum != 1) | |
| 2964 break; | |
| 2965 | |
| 2966 /* | |
| 2967 * if block 1 becomes full the tree is given an extra level | |
| 2968 * The pointers from block 1 are moved into the new block. | |
| 2969 * block 1 is updated to point to the new block | |
| 2970 * then continue to split the new block | |
| 2971 */ | |
| 2972 mch_memmove(pp_new, pp, (size_t)page_size); | |
| 2973 pp->pb_count = 1; | |
| 2974 pp->pb_pointer[0].pe_bnum = hp_new->bh_bnum; | |
| 2975 pp->pb_pointer[0].pe_line_count = buf->b_ml.ml_line_count; | |
| 2976 pp->pb_pointer[0].pe_old_lnum = 1; | |
| 2977 pp->pb_pointer[0].pe_page_count = 1; | |
| 2978 mf_put(mfp, hp, TRUE, FALSE); /* release block 1 */ | |
| 2979 hp = hp_new; /* new block is to be split */ | |
| 2980 pp = pp_new; | |
| 2981 CHECK(stack_idx != 0, _("stack_idx should be 0")); | |
| 2982 ip->ip_index = 0; | |
| 2983 ++stack_idx; /* do block 1 again later */ | |
| 2984 } | |
| 2985 /* | |
| 2986 * move the pointers after the current one to the new block | |
| 2987 * If there are none, the new entry will be in the new block. | |
| 2988 */ | |
| 2989 total_moved = pp->pb_count - pb_idx - 1; | |
| 2990 if (total_moved) | |
| 2991 { | |
| 2992 mch_memmove(&pp_new->pb_pointer[0], | |
| 2993 &pp->pb_pointer[pb_idx + 1], | |
| 2994 (size_t)(total_moved) * sizeof(PTR_EN)); | |
| 2995 pp_new->pb_count = total_moved; | |
| 2996 pp->pb_count -= total_moved - 1; | |
| 2997 pp->pb_pointer[pb_idx + 1].pe_bnum = bnum_right; | |
| 2998 pp->pb_pointer[pb_idx + 1].pe_line_count = line_count_right; | |
| 2999 pp->pb_pointer[pb_idx + 1].pe_page_count = page_count_right; | |
| 3000 if (lnum_right) | |
| 3001 pp->pb_pointer[pb_idx + 1].pe_old_lnum = lnum_right; | |
| 3002 } | |
| 3003 else | |
| 3004 { | |
| 3005 pp_new->pb_count = 1; | |
| 3006 pp_new->pb_pointer[0].pe_bnum = bnum_right; | |
| 3007 pp_new->pb_pointer[0].pe_line_count = line_count_right; | |
| 3008 pp_new->pb_pointer[0].pe_page_count = page_count_right; | |
| 3009 pp_new->pb_pointer[0].pe_old_lnum = lnum_right; | |
| 3010 } | |
| 3011 pp->pb_pointer[pb_idx].pe_bnum = bnum_left; | |
| 3012 pp->pb_pointer[pb_idx].pe_line_count = line_count_left; | |
| 3013 pp->pb_pointer[pb_idx].pe_page_count = page_count_left; | |
| 3014 if (lnum_left) | |
| 3015 pp->pb_pointer[pb_idx].pe_old_lnum = lnum_left; | |
| 3016 lnum_left = 0; | |
| 3017 lnum_right = 0; | |
| 3018 | |
| 3019 /* | |
| 3020 * recompute line counts | |
| 3021 */ | |
| 3022 line_count_right = 0; | |
| 3023 for (i = 0; i < (int)pp_new->pb_count; ++i) | |
| 3024 line_count_right += pp_new->pb_pointer[i].pe_line_count; | |
| 3025 line_count_left = 0; | |
| 3026 for (i = 0; i < (int)pp->pb_count; ++i) | |
| 3027 line_count_left += pp->pb_pointer[i].pe_line_count; | |
| 3028 | |
| 3029 bnum_left = hp->bh_bnum; | |
| 3030 bnum_right = hp_new->bh_bnum; | |
| 3031 page_count_left = 1; | |
| 3032 page_count_right = 1; | |
| 3033 mf_put(mfp, hp, TRUE, FALSE); | |
| 3034 mf_put(mfp, hp_new, TRUE, FALSE); | |
| 3035 } | |
| 3036 } | |
| 3037 | |
| 3038 /* | |
| 3039 * Safety check: fallen out of for loop? | |
| 3040 */ | |
| 3041 if (stack_idx < 0) | |
| 3042 { | |
|
10359
66f1b5bf3fa6
commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
3043 IEMSG(_("E318: Updated too many blocks?")); |
| 7 | 3044 buf->b_ml.ml_stack_top = 0; /* invalidate stack */ |
| 3045 } | |
| 3046 } | |
| 3047 | |
| 3048 #ifdef FEAT_BYTEOFF | |
| 3049 /* The line was inserted below 'lnum' */ | |
| 3050 ml_updatechunk(buf, lnum + 1, (long)len, ML_CHNK_ADDLINE); | |
| 3051 #endif | |
| 3052 #ifdef FEAT_NETBEANS_INTG | |
| 2210 | 3053 if (netbeans_active()) |
| 7 | 3054 { |
| 3055 if (STRLEN(line) > 0) | |
| 835 | 3056 netbeans_inserted(buf, lnum+1, (colnr_T)0, line, (int)STRLEN(line)); |
| 34 | 3057 netbeans_inserted(buf, lnum+1, (colnr_T)STRLEN(line), |
| 7 | 3058 (char_u *)"\n", 1); |
| 3059 } | |
| 3060 #endif | |
|
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commit https://github.com/vim/vim/commit/509ce2a558e7e0c03242e32e844255af52f1c821
Christian Brabandt <cb@256bit.org>
parents:
8422
diff
changeset
|
3061 #ifdef FEAT_JOB_CHANNEL |
|
8422
5d2c84be23b5
commit https://github.com/vim/vim/commit/99ef06296f3c37490511c03786a2c8672e015c56
Christian Brabandt <cb@256bit.org>
parents:
8212
diff
changeset
|
3062 if (buf->b_write_to_channel) |
|
5d2c84be23b5
commit https://github.com/vim/vim/commit/99ef06296f3c37490511c03786a2c8672e015c56
Christian Brabandt <cb@256bit.org>
parents:
8212
diff
changeset
|
3063 channel_write_new_lines(buf); |
|
5d2c84be23b5
commit https://github.com/vim/vim/commit/99ef06296f3c37490511c03786a2c8672e015c56
Christian Brabandt <cb@256bit.org>
parents:
8212
diff
changeset
|
3064 #endif |
|
5d2c84be23b5
commit https://github.com/vim/vim/commit/99ef06296f3c37490511c03786a2c8672e015c56
Christian Brabandt <cb@256bit.org>
parents:
8212
diff
changeset
|
3065 |
| 7 | 3066 return OK; |
| 3067 } | |
| 3068 | |
| 3069 /* | |
| 625 | 3070 * Replace line lnum, with buffering, in current buffer. |
| 7 | 3071 * |
| 720 | 3072 * If "copy" is TRUE, make a copy of the line, otherwise the line has been |
| 7 | 3073 * copied to allocated memory already. |
| 3074 * | |
| 3075 * Check: The caller of this function should probably also call | |
| 3076 * changed_lines(), unless update_screen(NOT_VALID) is used. | |
| 3077 * | |
| 3078 * return FAIL for failure, OK otherwise | |
| 3079 */ | |
| 3080 int | |
|
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parents:
7803
diff
changeset
|
3081 ml_replace(linenr_T lnum, char_u *line, int copy) |
| 7 | 3082 { |
| 3083 if (line == NULL) /* just checking... */ | |
| 3084 return FAIL; | |
| 3085 | |
| 3086 /* When starting up, we might still need to create the memfile */ | |
|
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diff
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|
3087 if (curbuf->b_ml.ml_mfp == NULL && open_buffer(FALSE, NULL, 0) == FAIL) |
| 7 | 3088 return FAIL; |
| 3089 | |
| 3090 if (copy && (line = vim_strsave(line)) == NULL) /* allocate memory */ | |
| 3091 return FAIL; | |
| 3092 #ifdef FEAT_NETBEANS_INTG | |
| 2210 | 3093 if (netbeans_active()) |
| 7 | 3094 { |
| 3095 netbeans_removed(curbuf, lnum, 0, (long)STRLEN(ml_get(lnum))); | |
| 835 | 3096 netbeans_inserted(curbuf, lnum, 0, line, (int)STRLEN(line)); |
| 7 | 3097 } |
| 3098 #endif | |
| 3099 if (curbuf->b_ml.ml_line_lnum != lnum) /* other line buffered */ | |
| 3100 ml_flush_line(curbuf); /* flush it */ | |
| 3101 else if (curbuf->b_ml.ml_flags & ML_LINE_DIRTY) /* same line allocated */ | |
| 3102 vim_free(curbuf->b_ml.ml_line_ptr); /* free it */ | |
| 3103 curbuf->b_ml.ml_line_ptr = line; | |
| 3104 curbuf->b_ml.ml_line_lnum = lnum; | |
| 3105 curbuf->b_ml.ml_flags = (curbuf->b_ml.ml_flags | ML_LINE_DIRTY) & ~ML_EMPTY; | |
| 3106 | |
| 3107 return OK; | |
| 3108 } | |
| 3109 | |
| 3110 /* | |
|
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|
3111 * Delete line "lnum" in the current buffer. |
|
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diff
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|
3112 * When "message" is TRUE may give a "No lines in buffer" message. |
| 7 | 3113 * |
| 3114 * Check: The caller of this function should probably also call | |
| 3115 * deleted_lines() after this. | |
| 3116 * | |
| 3117 * return FAIL for failure, OK otherwise | |
| 3118 */ | |
| 3119 int | |
|
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7803
diff
changeset
|
3120 ml_delete(linenr_T lnum, int message) |
| 7 | 3121 { |
| 3122 ml_flush_line(curbuf); | |
| 3123 return ml_delete_int(curbuf, lnum, message); | |
| 3124 } | |
| 3125 | |
| 3126 static int | |
|
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parents:
7803
diff
changeset
|
3127 ml_delete_int(buf_T *buf, linenr_T lnum, int message) |
| 7 | 3128 { |
| 3129 bhdr_T *hp; | |
| 3130 memfile_T *mfp; | |
| 3131 DATA_BL *dp; | |
| 3132 PTR_BL *pp; | |
| 3133 infoptr_T *ip; | |
| 3134 int count; /* number of entries in block */ | |
| 3135 int idx; | |
| 3136 int stack_idx; | |
| 3137 int text_start; | |
| 3138 int line_start; | |
| 3139 long line_size; | |
| 3140 int i; | |
| 3141 | |
| 3142 if (lnum < 1 || lnum > buf->b_ml.ml_line_count) | |
| 3143 return FAIL; | |
| 3144 | |
| 3145 if (lowest_marked && lowest_marked > lnum) | |
| 3146 lowest_marked--; | |
| 3147 | |
| 3148 /* | |
| 3149 * If the file becomes empty the last line is replaced by an empty line. | |
| 3150 */ | |
| 3151 if (buf->b_ml.ml_line_count == 1) /* file becomes empty */ | |
| 3152 { | |
| 3153 if (message | |
| 3154 #ifdef FEAT_NETBEANS_INTG | |
| 3155 && !netbeansSuppressNoLines | |
| 3156 #endif | |
| 3157 ) | |
| 680 | 3158 set_keep_msg((char_u *)_(no_lines_msg), 0); |
| 3159 | |
| 4352 | 3160 /* FEAT_BYTEOFF already handled in there, don't worry 'bout it below */ |
| 7 | 3161 i = ml_replace((linenr_T)1, (char_u *)"", TRUE); |
| 3162 buf->b_ml.ml_flags |= ML_EMPTY; | |
| 3163 | |
| 3164 return i; | |
| 3165 } | |
| 3166 | |
| 3167 /* | |
| 3168 * find the data block containing the line | |
| 3169 * This also fills the stack with the blocks from the root to the data block | |
| 3170 * This also releases any locked block. | |
| 3171 */ | |
| 3172 mfp = buf->b_ml.ml_mfp; | |
| 3173 if (mfp == NULL) | |
| 3174 return FAIL; | |
| 3175 | |
| 3176 if ((hp = ml_find_line(buf, lnum, ML_DELETE)) == NULL) | |
| 3177 return FAIL; | |
| 3178 | |
| 3179 dp = (DATA_BL *)(hp->bh_data); | |
| 3180 /* compute line count before the delete */ | |
| 3181 count = (long)(buf->b_ml.ml_locked_high) | |
| 3182 - (long)(buf->b_ml.ml_locked_low) + 2; | |
| 3183 idx = lnum - buf->b_ml.ml_locked_low; | |
| 3184 | |
| 3185 --buf->b_ml.ml_line_count; | |
| 3186 | |
| 3187 line_start = ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 3188 if (idx == 0) /* first line in block, text at the end */ | |
| 3189 line_size = dp->db_txt_end - line_start; | |
| 3190 else | |
| 3191 line_size = ((dp->db_index[idx - 1]) & DB_INDEX_MASK) - line_start; | |
| 3192 | |
| 3193 #ifdef FEAT_NETBEANS_INTG | |
| 2210 | 3194 if (netbeans_active()) |
| 34 | 3195 netbeans_removed(buf, lnum, 0, (long)line_size); |
| 7 | 3196 #endif |
| 3197 | |
| 3198 /* | |
| 3199 * special case: If there is only one line in the data block it becomes empty. | |
| 3200 * Then we have to remove the entry, pointing to this data block, from the | |
| 3201 * pointer block. If this pointer block also becomes empty, we go up another | |
| 3202 * block, and so on, up to the root if necessary. | |
| 3203 * The line counts in the pointer blocks have already been adjusted by | |
| 3204 * ml_find_line(). | |
| 3205 */ | |
| 3206 if (count == 1) | |
| 3207 { | |
| 3208 mf_free(mfp, hp); /* free the data block */ | |
| 3209 buf->b_ml.ml_locked = NULL; | |
| 3210 | |
| 2823 | 3211 for (stack_idx = buf->b_ml.ml_stack_top - 1; stack_idx >= 0; |
| 3212 --stack_idx) | |
| 7 | 3213 { |
| 3214 buf->b_ml.ml_stack_top = 0; /* stack is invalid when failing */ | |
| 3215 ip = &(buf->b_ml.ml_stack[stack_idx]); | |
| 3216 idx = ip->ip_index; | |
| 3217 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
| 3218 return FAIL; | |
| 3219 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
| 3220 if (pp->pb_id != PTR_ID) | |
| 3221 { | |
|
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10042
diff
changeset
|
3222 IEMSG(_("E317: pointer block id wrong 4")); |
| 7 | 3223 mf_put(mfp, hp, FALSE, FALSE); |
| 3224 return FAIL; | |
| 3225 } | |
| 3226 count = --(pp->pb_count); | |
| 3227 if (count == 0) /* the pointer block becomes empty! */ | |
| 3228 mf_free(mfp, hp); | |
| 3229 else | |
| 3230 { | |
| 3231 if (count != idx) /* move entries after the deleted one */ | |
| 3232 mch_memmove(&pp->pb_pointer[idx], &pp->pb_pointer[idx + 1], | |
| 3233 (size_t)(count - idx) * sizeof(PTR_EN)); | |
| 3234 mf_put(mfp, hp, TRUE, FALSE); | |
| 3235 | |
| 3236 buf->b_ml.ml_stack_top = stack_idx; /* truncate stack */ | |
| 1167 | 3237 /* fix line count for rest of blocks in the stack */ |
| 3238 if (buf->b_ml.ml_locked_lineadd != 0) | |
| 7 | 3239 { |
| 3240 ml_lineadd(buf, buf->b_ml.ml_locked_lineadd); | |
| 3241 buf->b_ml.ml_stack[buf->b_ml.ml_stack_top].ip_high += | |
| 1167 | 3242 buf->b_ml.ml_locked_lineadd; |
| 7 | 3243 } |
| 3244 ++(buf->b_ml.ml_stack_top); | |
| 3245 | |
| 3246 break; | |
| 3247 } | |
| 3248 } | |
| 3249 CHECK(stack_idx < 0, _("deleted block 1?")); | |
| 3250 } | |
| 3251 else | |
| 3252 { | |
| 3253 /* | |
| 3254 * delete the text by moving the next lines forwards | |
| 3255 */ | |
| 3256 text_start = dp->db_txt_start; | |
| 3257 mch_memmove((char *)dp + text_start + line_size, | |
| 3258 (char *)dp + text_start, (size_t)(line_start - text_start)); | |
| 3259 | |
| 3260 /* | |
| 3261 * delete the index by moving the next indexes backwards | |
| 3262 * Adjust the indexes for the text movement. | |
| 3263 */ | |
| 3264 for (i = idx; i < count - 1; ++i) | |
| 3265 dp->db_index[i] = dp->db_index[i + 1] + line_size; | |
| 3266 | |
| 3267 dp->db_free += line_size + INDEX_SIZE; | |
| 3268 dp->db_txt_start += line_size; | |
| 3269 --(dp->db_line_count); | |
| 3270 | |
| 3271 /* | |
| 3272 * mark the block dirty and make sure it is in the file (for recovery) | |
| 3273 */ | |
| 3274 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 3275 } | |
| 3276 | |
| 3277 #ifdef FEAT_BYTEOFF | |
| 3278 ml_updatechunk(buf, lnum, line_size, ML_CHNK_DELLINE); | |
| 3279 #endif | |
| 3280 return OK; | |
| 3281 } | |
| 3282 | |
| 3283 /* | |
| 3284 * set the B_MARKED flag for line 'lnum' | |
| 3285 */ | |
| 3286 void | |
|
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7803
diff
changeset
|
3287 ml_setmarked(linenr_T lnum) |
| 7 | 3288 { |
| 3289 bhdr_T *hp; | |
| 3290 DATA_BL *dp; | |
| 3291 /* invalid line number */ | |
| 3292 if (lnum < 1 || lnum > curbuf->b_ml.ml_line_count | |
| 3293 || curbuf->b_ml.ml_mfp == NULL) | |
| 3294 return; /* give error message? */ | |
| 3295 | |
| 3296 if (lowest_marked == 0 || lowest_marked > lnum) | |
| 3297 lowest_marked = lnum; | |
| 3298 | |
| 3299 /* | |
| 3300 * find the data block containing the line | |
| 3301 * This also fills the stack with the blocks from the root to the data block | |
| 3302 * This also releases any locked block. | |
| 3303 */ | |
| 3304 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
| 3305 return; /* give error message? */ | |
| 3306 | |
| 3307 dp = (DATA_BL *)(hp->bh_data); | |
| 3308 dp->db_index[lnum - curbuf->b_ml.ml_locked_low] |= DB_MARKED; | |
| 3309 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 3310 } | |
| 3311 | |
| 3312 /* | |
| 3313 * find the first line with its B_MARKED flag set | |
| 3314 */ | |
| 3315 linenr_T | |
|
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parents:
7803
diff
changeset
|
3316 ml_firstmarked(void) |
| 7 | 3317 { |
| 3318 bhdr_T *hp; | |
| 3319 DATA_BL *dp; | |
| 3320 linenr_T lnum; | |
| 3321 int i; | |
| 3322 | |
| 3323 if (curbuf->b_ml.ml_mfp == NULL) | |
| 3324 return (linenr_T) 0; | |
| 3325 | |
| 3326 /* | |
| 3327 * The search starts with lowest_marked line. This is the last line where | |
| 3328 * a mark was found, adjusted by inserting/deleting lines. | |
| 3329 */ | |
| 3330 for (lnum = lowest_marked; lnum <= curbuf->b_ml.ml_line_count; ) | |
| 3331 { | |
| 3332 /* | |
| 3333 * Find the data block containing the line. | |
| 3334 * This also fills the stack with the blocks from the root to the data | |
| 3335 * block This also releases any locked block. | |
| 3336 */ | |
| 3337 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
| 3338 return (linenr_T)0; /* give error message? */ | |
| 3339 | |
| 3340 dp = (DATA_BL *)(hp->bh_data); | |
| 3341 | |
| 3342 for (i = lnum - curbuf->b_ml.ml_locked_low; | |
| 3343 lnum <= curbuf->b_ml.ml_locked_high; ++i, ++lnum) | |
| 3344 if ((dp->db_index[i]) & DB_MARKED) | |
| 3345 { | |
| 3346 (dp->db_index[i]) &= DB_INDEX_MASK; | |
| 3347 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 3348 lowest_marked = lnum + 1; | |
| 3349 return lnum; | |
| 3350 } | |
| 3351 } | |
| 3352 | |
| 3353 return (linenr_T) 0; | |
| 3354 } | |
| 3355 | |
| 3356 /* | |
| 3357 * clear all DB_MARKED flags | |
| 3358 */ | |
| 3359 void | |
|
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parents:
7803
diff
changeset
|
3360 ml_clearmarked(void) |
| 7 | 3361 { |
| 3362 bhdr_T *hp; | |
| 3363 DATA_BL *dp; | |
| 3364 linenr_T lnum; | |
| 3365 int i; | |
| 3366 | |
| 3367 if (curbuf->b_ml.ml_mfp == NULL) /* nothing to do */ | |
| 3368 return; | |
| 3369 | |
| 3370 /* | |
| 3371 * The search starts with line lowest_marked. | |
| 3372 */ | |
| 3373 for (lnum = lowest_marked; lnum <= curbuf->b_ml.ml_line_count; ) | |
| 3374 { | |
| 3375 /* | |
| 3376 * Find the data block containing the line. | |
| 3377 * This also fills the stack with the blocks from the root to the data | |
| 3378 * block and releases any locked block. | |
| 3379 */ | |
| 3380 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
| 3381 return; /* give error message? */ | |
| 3382 | |
| 3383 dp = (DATA_BL *)(hp->bh_data); | |
| 3384 | |
| 3385 for (i = lnum - curbuf->b_ml.ml_locked_low; | |
| 3386 lnum <= curbuf->b_ml.ml_locked_high; ++i, ++lnum) | |
| 3387 if ((dp->db_index[i]) & DB_MARKED) | |
| 3388 { | |
| 3389 (dp->db_index[i]) &= DB_INDEX_MASK; | |
| 3390 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 3391 } | |
| 3392 } | |
| 3393 | |
| 3394 lowest_marked = 0; | |
| 3395 return; | |
| 3396 } | |
| 3397 | |
| 3398 /* | |
| 3399 * flush ml_line if necessary | |
| 3400 */ | |
| 3401 static void | |
|
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parents:
7803
diff
changeset
|
3402 ml_flush_line(buf_T *buf) |
| 7 | 3403 { |
| 3404 bhdr_T *hp; | |
| 3405 DATA_BL *dp; | |
| 3406 linenr_T lnum; | |
| 3407 char_u *new_line; | |
| 3408 char_u *old_line; | |
| 3409 colnr_T new_len; | |
| 3410 int old_len; | |
| 3411 int extra; | |
| 3412 int idx; | |
| 3413 int start; | |
| 3414 int count; | |
| 3415 int i; | |
|
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diff
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|
3416 static int entered = FALSE; |
| 7 | 3417 |
| 3418 if (buf->b_ml.ml_line_lnum == 0 || buf->b_ml.ml_mfp == NULL) | |
| 3419 return; /* nothing to do */ | |
| 3420 | |
| 3421 if (buf->b_ml.ml_flags & ML_LINE_DIRTY) | |
| 3422 { | |
|
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diff
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|
3423 /* This code doesn't work recursively, but Netbeans may call back here |
|
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diff
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|
3424 * when obtaining the cursor position. */ |
|
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diff
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|
3425 if (entered) |
|
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diff
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|
3426 return; |
|
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|
3427 entered = TRUE; |
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diff
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|
3428 |
| 7 | 3429 lnum = buf->b_ml.ml_line_lnum; |
| 3430 new_line = buf->b_ml.ml_line_ptr; | |
| 3431 | |
| 3432 hp = ml_find_line(buf, lnum, ML_FIND); | |
| 3433 if (hp == NULL) | |
|
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parents:
10042
diff
changeset
|
3434 IEMSGN(_("E320: Cannot find line %ld"), lnum); |
| 7 | 3435 else |
| 3436 { | |
| 3437 dp = (DATA_BL *)(hp->bh_data); | |
| 3438 idx = lnum - buf->b_ml.ml_locked_low; | |
| 3439 start = ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 3440 old_line = (char_u *)dp + start; | |
| 3441 if (idx == 0) /* line is last in block */ | |
| 3442 old_len = dp->db_txt_end - start; | |
| 3443 else /* text of previous line follows */ | |
| 3444 old_len = (dp->db_index[idx - 1] & DB_INDEX_MASK) - start; | |
| 3445 new_len = (colnr_T)STRLEN(new_line) + 1; | |
| 3446 extra = new_len - old_len; /* negative if lines gets smaller */ | |
| 3447 | |
| 3448 /* | |
| 3449 * if new line fits in data block, replace directly | |
| 3450 */ | |
| 3451 if ((int)dp->db_free >= extra) | |
| 3452 { | |
| 3453 /* if the length changes and there are following lines */ | |
| 3454 count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low + 1; | |
| 3455 if (extra != 0 && idx < count - 1) | |
| 3456 { | |
| 3457 /* move text of following lines */ | |
| 3458 mch_memmove((char *)dp + dp->db_txt_start - extra, | |
| 3459 (char *)dp + dp->db_txt_start, | |
| 3460 (size_t)(start - dp->db_txt_start)); | |
| 3461 | |
| 3462 /* adjust pointers of this and following lines */ | |
| 3463 for (i = idx + 1; i < count; ++i) | |
| 3464 dp->db_index[i] -= extra; | |
| 3465 } | |
| 3466 dp->db_index[idx] -= extra; | |
| 3467 | |
| 3468 /* adjust free space */ | |
| 3469 dp->db_free -= extra; | |
| 3470 dp->db_txt_start -= extra; | |
| 3471 | |
| 3472 /* copy new line into the data block */ | |
| 3473 mch_memmove(old_line - extra, new_line, (size_t)new_len); | |
| 3474 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 3475 #ifdef FEAT_BYTEOFF | |
| 3476 /* The else case is already covered by the insert and delete */ | |
| 3477 ml_updatechunk(buf, lnum, (long)extra, ML_CHNK_UPDLINE); | |
| 3478 #endif | |
| 3479 } | |
| 3480 else | |
| 3481 { | |
| 3482 /* | |
| 3483 * Cannot do it in one data block: Delete and append. | |
| 3484 * Append first, because ml_delete_int() cannot delete the | |
| 3485 * last line in a buffer, which causes trouble for a buffer | |
| 3486 * that has only one line. | |
| 3487 * Don't forget to copy the mark! | |
| 3488 */ | |
| 3489 /* How about handling errors??? */ | |
| 3490 (void)ml_append_int(buf, lnum, new_line, new_len, FALSE, | |
| 3491 (dp->db_index[idx] & DB_MARKED)); | |
| 3492 (void)ml_delete_int(buf, lnum, FALSE); | |
| 3493 } | |
| 3494 } | |
| 3495 vim_free(new_line); | |
|
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3496 |
|
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|
3497 entered = FALSE; |
| 7 | 3498 } |
| 3499 | |
| 3500 buf->b_ml.ml_line_lnum = 0; | |
| 3501 } | |
| 3502 | |
| 3503 /* | |
| 3504 * create a new, empty, data block | |
| 3505 */ | |
| 3506 static bhdr_T * | |
|
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changeset
|
3507 ml_new_data(memfile_T *mfp, int negative, int page_count) |
| 7 | 3508 { |
| 3509 bhdr_T *hp; | |
| 3510 DATA_BL *dp; | |
| 3511 | |
| 3512 if ((hp = mf_new(mfp, negative, page_count)) == NULL) | |
| 3513 return NULL; | |
| 3514 | |
| 3515 dp = (DATA_BL *)(hp->bh_data); | |
| 3516 dp->db_id = DATA_ID; | |
| 3517 dp->db_txt_start = dp->db_txt_end = page_count * mfp->mf_page_size; | |
| 3518 dp->db_free = dp->db_txt_start - HEADER_SIZE; | |
| 3519 dp->db_line_count = 0; | |
| 3520 | |
| 3521 return hp; | |
| 3522 } | |
| 3523 | |
| 3524 /* | |
| 3525 * create a new, empty, pointer block | |
| 3526 */ | |
| 3527 static bhdr_T * | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3528 ml_new_ptr(memfile_T *mfp) |
| 7 | 3529 { |
| 3530 bhdr_T *hp; | |
| 3531 PTR_BL *pp; | |
| 3532 | |
| 3533 if ((hp = mf_new(mfp, FALSE, 1)) == NULL) | |
| 3534 return NULL; | |
| 3535 | |
| 3536 pp = (PTR_BL *)(hp->bh_data); | |
| 3537 pp->pb_id = PTR_ID; | |
| 3538 pp->pb_count = 0; | |
|
2240
6b4879aea261
Add test for gettabvar() and settabvar().
Bram Moolenaar <bram@vim.org>
parents:
2221
diff
changeset
|
3539 pp->pb_count_max = (short_u)((mfp->mf_page_size - sizeof(PTR_BL)) |
|
6b4879aea261
Add test for gettabvar() and settabvar().
Bram Moolenaar <bram@vim.org>
parents:
2221
diff
changeset
|
3540 / sizeof(PTR_EN) + 1); |
| 7 | 3541 |
| 3542 return hp; | |
| 3543 } | |
| 3544 | |
| 3545 /* | |
| 3546 * lookup line 'lnum' in a memline | |
| 3547 * | |
| 3548 * action: if ML_DELETE or ML_INSERT the line count is updated while searching | |
| 3549 * if ML_FLUSH only flush a locked block | |
| 3550 * if ML_FIND just find the line | |
| 3551 * | |
| 3552 * If the block was found it is locked and put in ml_locked. | |
| 3553 * The stack is updated to lead to the locked block. The ip_high field in | |
| 3554 * the stack is updated to reflect the last line in the block AFTER the | |
| 3555 * insert or delete, also if the pointer block has not been updated yet. But | |
| 1167 | 3556 * if ml_locked != NULL ml_locked_lineadd must be added to ip_high. |
| 7 | 3557 * |
| 3558 * return: NULL for failure, pointer to block header otherwise | |
| 3559 */ | |
| 3560 static bhdr_T * | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3561 ml_find_line(buf_T *buf, linenr_T lnum, int action) |
| 7 | 3562 { |
| 3563 DATA_BL *dp; | |
| 3564 PTR_BL *pp; | |
| 3565 infoptr_T *ip; | |
| 3566 bhdr_T *hp; | |
| 3567 memfile_T *mfp; | |
| 3568 linenr_T t; | |
| 3569 blocknr_T bnum, bnum2; | |
| 3570 int dirty; | |
| 3571 linenr_T low, high; | |
| 3572 int top; | |
| 3573 int page_count; | |
| 3574 int idx; | |
| 3575 | |
| 3576 mfp = buf->b_ml.ml_mfp; | |
| 3577 | |
| 3578 /* | |
| 3579 * If there is a locked block check if the wanted line is in it. | |
| 3580 * If not, flush and release the locked block. | |
| 3581 * Don't do this for ML_INSERT_SAME, because the stack need to be updated. | |
| 3582 * Don't do this for ML_FLUSH, because we want to flush the locked block. | |
| 1066 | 3583 * Don't do this when 'swapfile' is reset, we want to load all the blocks. |
| 7 | 3584 */ |
| 3585 if (buf->b_ml.ml_locked) | |
| 3586 { | |
| 1066 | 3587 if (ML_SIMPLE(action) |
| 3588 && buf->b_ml.ml_locked_low <= lnum | |
| 3589 && buf->b_ml.ml_locked_high >= lnum | |
| 3590 && !mf_dont_release) | |
| 7 | 3591 { |
| 1066 | 3592 /* remember to update pointer blocks and stack later */ |
| 7 | 3593 if (action == ML_INSERT) |
| 3594 { | |
| 3595 ++(buf->b_ml.ml_locked_lineadd); | |
| 3596 ++(buf->b_ml.ml_locked_high); | |
| 3597 } | |
| 3598 else if (action == ML_DELETE) | |
| 3599 { | |
| 3600 --(buf->b_ml.ml_locked_lineadd); | |
| 3601 --(buf->b_ml.ml_locked_high); | |
| 3602 } | |
| 3603 return (buf->b_ml.ml_locked); | |
| 3604 } | |
| 3605 | |
| 3606 mf_put(mfp, buf->b_ml.ml_locked, buf->b_ml.ml_flags & ML_LOCKED_DIRTY, | |
| 3607 buf->b_ml.ml_flags & ML_LOCKED_POS); | |
| 3608 buf->b_ml.ml_locked = NULL; | |
| 3609 | |
| 1167 | 3610 /* |
| 3611 * If lines have been added or deleted in the locked block, need to | |
| 3612 * update the line count in pointer blocks. | |
| 3613 */ | |
| 3614 if (buf->b_ml.ml_locked_lineadd != 0) | |
| 7 | 3615 ml_lineadd(buf, buf->b_ml.ml_locked_lineadd); |
| 3616 } | |
| 3617 | |
| 3618 if (action == ML_FLUSH) /* nothing else to do */ | |
| 3619 return NULL; | |
| 3620 | |
| 3621 bnum = 1; /* start at the root of the tree */ | |
| 3622 page_count = 1; | |
| 3623 low = 1; | |
| 3624 high = buf->b_ml.ml_line_count; | |
| 3625 | |
| 3626 if (action == ML_FIND) /* first try stack entries */ | |
| 3627 { | |
| 3628 for (top = buf->b_ml.ml_stack_top - 1; top >= 0; --top) | |
| 3629 { | |
| 3630 ip = &(buf->b_ml.ml_stack[top]); | |
| 3631 if (ip->ip_low <= lnum && ip->ip_high >= lnum) | |
| 3632 { | |
| 3633 bnum = ip->ip_bnum; | |
| 3634 low = ip->ip_low; | |
| 3635 high = ip->ip_high; | |
| 3636 buf->b_ml.ml_stack_top = top; /* truncate stack at prev entry */ | |
| 3637 break; | |
| 3638 } | |
| 3639 } | |
| 3640 if (top < 0) | |
| 3641 buf->b_ml.ml_stack_top = 0; /* not found, start at the root */ | |
| 3642 } | |
| 3643 else /* ML_DELETE or ML_INSERT */ | |
| 3644 buf->b_ml.ml_stack_top = 0; /* start at the root */ | |
| 3645 | |
| 3646 /* | |
| 3647 * search downwards in the tree until a data block is found | |
| 3648 */ | |
| 3649 for (;;) | |
| 3650 { | |
| 3651 if ((hp = mf_get(mfp, bnum, page_count)) == NULL) | |
| 3652 goto error_noblock; | |
| 3653 | |
| 3654 /* | |
| 3655 * update high for insert/delete | |
| 3656 */ | |
| 3657 if (action == ML_INSERT) | |
| 3658 ++high; | |
| 3659 else if (action == ML_DELETE) | |
| 3660 --high; | |
| 3661 | |
| 3662 dp = (DATA_BL *)(hp->bh_data); | |
| 3663 if (dp->db_id == DATA_ID) /* data block */ | |
| 3664 { | |
| 3665 buf->b_ml.ml_locked = hp; | |
| 3666 buf->b_ml.ml_locked_low = low; | |
| 3667 buf->b_ml.ml_locked_high = high; | |
| 3668 buf->b_ml.ml_locked_lineadd = 0; | |
| 3669 buf->b_ml.ml_flags &= ~(ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 3670 return hp; | |
| 3671 } | |
| 3672 | |
| 3673 pp = (PTR_BL *)(dp); /* must be pointer block */ | |
| 3674 if (pp->pb_id != PTR_ID) | |
| 3675 { | |
|
10359
66f1b5bf3fa6
commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
3676 IEMSG(_("E317: pointer block id wrong")); |
| 7 | 3677 goto error_block; |
| 3678 } | |
| 3679 | |
| 3680 if ((top = ml_add_stack(buf)) < 0) /* add new entry to stack */ | |
| 3681 goto error_block; | |
| 3682 ip = &(buf->b_ml.ml_stack[top]); | |
| 3683 ip->ip_bnum = bnum; | |
| 3684 ip->ip_low = low; | |
| 3685 ip->ip_high = high; | |
| 3686 ip->ip_index = -1; /* index not known yet */ | |
| 3687 | |
| 3688 dirty = FALSE; | |
| 3689 for (idx = 0; idx < (int)pp->pb_count; ++idx) | |
| 3690 { | |
| 3691 t = pp->pb_pointer[idx].pe_line_count; | |
| 3692 CHECK(t == 0, _("pe_line_count is zero")); | |
| 3693 if ((low += t) > lnum) | |
| 3694 { | |
| 3695 ip->ip_index = idx; | |
| 3696 bnum = pp->pb_pointer[idx].pe_bnum; | |
| 3697 page_count = pp->pb_pointer[idx].pe_page_count; | |
| 3698 high = low - 1; | |
| 3699 low -= t; | |
| 3700 | |
| 3701 /* | |
| 3702 * a negative block number may have been changed | |
| 3703 */ | |
| 3704 if (bnum < 0) | |
| 3705 { | |
| 3706 bnum2 = mf_trans_del(mfp, bnum); | |
| 3707 if (bnum != bnum2) | |
| 3708 { | |
| 3709 bnum = bnum2; | |
| 3710 pp->pb_pointer[idx].pe_bnum = bnum; | |
| 3711 dirty = TRUE; | |
| 3712 } | |
| 3713 } | |
| 3714 | |
| 3715 break; | |
| 3716 } | |
| 3717 } | |
| 3718 if (idx >= (int)pp->pb_count) /* past the end: something wrong! */ | |
| 3719 { | |
| 3720 if (lnum > buf->b_ml.ml_line_count) | |
|
10359
66f1b5bf3fa6
commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
3721 IEMSGN(_("E322: line number out of range: %ld past the end"), |
| 7 | 3722 lnum - buf->b_ml.ml_line_count); |
| 3723 | |
| 3724 else | |
|
10359
66f1b5bf3fa6
commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
3725 IEMSGN(_("E323: line count wrong in block %ld"), bnum); |
| 7 | 3726 goto error_block; |
| 3727 } | |
| 3728 if (action == ML_DELETE) | |
| 3729 { | |
| 3730 pp->pb_pointer[idx].pe_line_count--; | |
| 3731 dirty = TRUE; | |
| 3732 } | |
| 3733 else if (action == ML_INSERT) | |
| 3734 { | |
| 3735 pp->pb_pointer[idx].pe_line_count++; | |
| 3736 dirty = TRUE; | |
| 3737 } | |
| 3738 mf_put(mfp, hp, dirty, FALSE); | |
| 3739 } | |
| 3740 | |
| 3741 error_block: | |
| 3742 mf_put(mfp, hp, FALSE, FALSE); | |
| 3743 error_noblock: | |
| 2267 | 3744 /* |
| 3745 * If action is ML_DELETE or ML_INSERT we have to correct the tree for | |
| 3746 * the incremented/decremented line counts, because there won't be a line | |
| 3747 * inserted/deleted after all. | |
| 3748 */ | |
| 7 | 3749 if (action == ML_DELETE) |
| 3750 ml_lineadd(buf, 1); | |
| 3751 else if (action == ML_INSERT) | |
| 3752 ml_lineadd(buf, -1); | |
| 3753 buf->b_ml.ml_stack_top = 0; | |
| 3754 return NULL; | |
| 3755 } | |
| 3756 | |
| 3757 /* | |
| 3758 * add an entry to the info pointer stack | |
| 3759 * | |
| 3760 * return -1 for failure, number of the new entry otherwise | |
| 3761 */ | |
| 3762 static int | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3763 ml_add_stack(buf_T *buf) |
| 7 | 3764 { |
| 3765 int top; | |
| 3766 infoptr_T *newstack; | |
| 3767 | |
| 3768 top = buf->b_ml.ml_stack_top; | |
| 3769 | |
| 2267 | 3770 /* may have to increase the stack size */ |
| 7 | 3771 if (top == buf->b_ml.ml_stack_size) |
| 3772 { | |
| 2267 | 3773 CHECK(top > 0, _("Stack size increases")); /* more than 5 levels??? */ |
| 7 | 3774 |
| 3775 newstack = (infoptr_T *)alloc((unsigned)sizeof(infoptr_T) * | |
| 3776 (buf->b_ml.ml_stack_size + STACK_INCR)); | |
| 3777 if (newstack == NULL) | |
| 3778 return -1; | |
| 6989 | 3779 if (top > 0) |
| 3780 mch_memmove(newstack, buf->b_ml.ml_stack, | |
| 1624 | 3781 (size_t)top * sizeof(infoptr_T)); |
| 7 | 3782 vim_free(buf->b_ml.ml_stack); |
| 3783 buf->b_ml.ml_stack = newstack; | |
| 3784 buf->b_ml.ml_stack_size += STACK_INCR; | |
| 3785 } | |
| 3786 | |
| 3787 buf->b_ml.ml_stack_top++; | |
| 3788 return top; | |
| 3789 } | |
| 3790 | |
| 3791 /* | |
| 3792 * Update the pointer blocks on the stack for inserted/deleted lines. | |
| 3793 * The stack itself is also updated. | |
| 3794 * | |
| 3795 * When a insert/delete line action fails, the line is not inserted/deleted, | |
| 3796 * but the pointer blocks have already been updated. That is fixed here by | |
| 3797 * walking through the stack. | |
| 3798 * | |
| 3799 * Count is the number of lines added, negative if lines have been deleted. | |
| 3800 */ | |
| 3801 static void | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3802 ml_lineadd(buf_T *buf, int count) |
| 7 | 3803 { |
| 3804 int idx; | |
| 3805 infoptr_T *ip; | |
| 3806 PTR_BL *pp; | |
| 3807 memfile_T *mfp = buf->b_ml.ml_mfp; | |
| 3808 bhdr_T *hp; | |
| 3809 | |
| 3810 for (idx = buf->b_ml.ml_stack_top - 1; idx >= 0; --idx) | |
| 3811 { | |
| 3812 ip = &(buf->b_ml.ml_stack[idx]); | |
| 3813 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
| 3814 break; | |
| 3815 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
| 3816 if (pp->pb_id != PTR_ID) | |
| 3817 { | |
| 3818 mf_put(mfp, hp, FALSE, FALSE); | |
|
10359
66f1b5bf3fa6
commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
3819 IEMSG(_("E317: pointer block id wrong 2")); |
| 7 | 3820 break; |
| 3821 } | |
| 3822 pp->pb_pointer[ip->ip_index].pe_line_count += count; | |
| 3823 ip->ip_high += count; | |
| 3824 mf_put(mfp, hp, TRUE, FALSE); | |
| 3825 } | |
| 3826 } | |
| 3827 | |
|
2214
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
3828 #if defined(HAVE_READLINK) || defined(PROTO) |
| 594 | 3829 /* |
| 3830 * Resolve a symlink in the last component of a file name. | |
| 3831 * Note that f_resolve() does it for every part of the path, we don't do that | |
| 3832 * here. | |
| 3833 * If it worked returns OK and the resolved link in "buf[MAXPATHL]". | |
| 3834 * Otherwise returns FAIL. | |
| 3835 */ | |
|
2214
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
3836 int |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3837 resolve_symlink(char_u *fname, char_u *buf) |
| 594 | 3838 { |
| 3839 char_u tmp[MAXPATHL]; | |
| 3840 int ret; | |
| 3841 int depth = 0; | |
| 3842 | |
| 3843 if (fname == NULL) | |
| 3844 return FAIL; | |
| 3845 | |
| 3846 /* Put the result so far in tmp[], starting with the original name. */ | |
| 3847 vim_strncpy(tmp, fname, MAXPATHL - 1); | |
| 3848 | |
| 3849 for (;;) | |
| 3850 { | |
| 3851 /* Limit symlink depth to 100, catch recursive loops. */ | |
| 3852 if (++depth == 100) | |
| 3853 { | |
| 3854 EMSG2(_("E773: Symlink loop for \"%s\""), fname); | |
| 3855 return FAIL; | |
| 3856 } | |
| 3857 | |
| 3858 ret = readlink((char *)tmp, (char *)buf, MAXPATHL - 1); | |
| 3859 if (ret <= 0) | |
| 3860 { | |
| 619 | 3861 if (errno == EINVAL || errno == ENOENT) |
| 594 | 3862 { |
| 619 | 3863 /* Found non-symlink or not existing file, stop here. |
| 1855 | 3864 * When at the first level use the unmodified name, skip the |
| 594 | 3865 * call to vim_FullName(). */ |
| 3866 if (depth == 1) | |
| 3867 return FAIL; | |
| 3868 | |
| 3869 /* Use the resolved name in tmp[]. */ | |
| 3870 break; | |
| 3871 } | |
| 3872 | |
| 3873 /* There must be some error reading links, use original name. */ | |
| 3874 return FAIL; | |
| 3875 } | |
| 3876 buf[ret] = NUL; | |
| 3877 | |
| 3878 /* | |
| 3879 * Check whether the symlink is relative or absolute. | |
| 3880 * If it's relative, build a new path based on the directory | |
| 3881 * portion of the filename (if any) and the path the symlink | |
| 3882 * points to. | |
| 3883 */ | |
| 3884 if (mch_isFullName(buf)) | |
| 3885 STRCPY(tmp, buf); | |
| 3886 else | |
| 3887 { | |
| 3888 char_u *tail; | |
| 3889 | |
| 3890 tail = gettail(tmp); | |
| 3891 if (STRLEN(tail) + STRLEN(buf) >= MAXPATHL) | |
| 3892 return FAIL; | |
| 3893 STRCPY(tail, buf); | |
| 3894 } | |
| 3895 } | |
| 3896 | |
| 3897 /* | |
| 3898 * Try to resolve the full name of the file so that the swapfile name will | |
| 3899 * be consistent even when opening a relative symlink from different | |
| 3900 * working directories. | |
| 3901 */ | |
| 3902 return vim_FullName(tmp, buf, MAXPATHL, TRUE); | |
| 3903 } | |
| 3904 #endif | |
| 3905 | |
| 7 | 3906 /* |
| 460 | 3907 * Make swap file name out of the file name and a directory name. |
| 3908 * Returns pointer to allocated memory or NULL. | |
| 7 | 3909 */ |
| 460 | 3910 char_u * |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3911 makeswapname( |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3912 char_u *fname, |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3913 char_u *ffname UNUSED, |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3914 buf_T *buf, |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3915 char_u *dir_name) |
| 7 | 3916 { |
| 3917 char_u *r, *s; | |
|
2145
de0e7ca61893
updated for version 7.2.427
Bram Moolenaar <bram@zimbu.org>
parents:
2108
diff
changeset
|
3918 char_u *fname_res = fname; |
| 594 | 3919 #ifdef HAVE_READLINK |
| 3920 char_u fname_buf[MAXPATHL]; | |
| 3921 #endif | |
| 7 | 3922 |
| 3923 #if defined(UNIX) || defined(WIN3264) /* Need _very_ long file names */ | |
|
10996
2f041b367cd9
patch 8.0.0387: compiler warnings
Christian Brabandt <cb@256bit.org>
parents:
10952
diff
changeset
|
3924 int len = (int)STRLEN(dir_name); |
|
10896
d513b653f5d0
patch 8.0.0337: invalid memory access in :recover command
Christian Brabandt <cb@256bit.org>
parents:
10889
diff
changeset
|
3925 |
|
d513b653f5d0
patch 8.0.0337: invalid memory access in :recover command
Christian Brabandt <cb@256bit.org>
parents:
10889
diff
changeset
|
3926 s = dir_name + len; |
|
d513b653f5d0
patch 8.0.0337: invalid memory access in :recover command
Christian Brabandt <cb@256bit.org>
parents:
10889
diff
changeset
|
3927 if (after_pathsep(dir_name, s) && len > 1 && s[-1] == s[-2]) |
| 7 | 3928 { /* Ends with '//', Use Full path */ |
| 3929 r = NULL; | |
| 460 | 3930 if ((s = make_percent_swname(dir_name, fname)) != NULL) |
| 7 | 3931 { |
| 3932 r = modname(s, (char_u *)".swp", FALSE); | |
| 3933 vim_free(s); | |
| 3934 } | |
| 3935 return r; | |
| 3936 } | |
| 3937 #endif | |
| 3938 | |
| 594 | 3939 #ifdef HAVE_READLINK |
| 3940 /* Expand symlink in the file name, so that we put the swap file with the | |
| 3941 * actual file instead of with the symlink. */ | |
| 3942 if (resolve_symlink(fname, fname_buf) == OK) | |
| 3943 fname_res = fname_buf; | |
| 3944 #endif | |
| 3945 | |
| 7 | 3946 r = buf_modname( |
| 3947 (buf->b_p_sn || buf->b_shortname), | |
| 594 | 3948 fname_res, |
| 7 | 3949 (char_u *) |
| 2823 | 3950 #if defined(VMS) |
| 7 | 3951 "_swp", |
| 3952 #else | |
| 3953 ".swp", | |
| 3954 #endif | |
| 3955 /* Prepend a '.' to the swap file name for the current directory. */ | |
|
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7961
diff
changeset
|
3956 dir_name[0] == '.' && dir_name[1] == NUL); |
| 7 | 3957 if (r == NULL) /* out of memory */ |
| 3958 return NULL; | |
| 3959 | |
| 3960 s = get_file_in_dir(r, dir_name); | |
| 3961 vim_free(r); | |
| 3962 return s; | |
| 3963 } | |
| 3964 | |
| 3965 /* | |
| 3966 * Get file name to use for swap file or backup file. | |
| 3967 * Use the name of the edited file "fname" and an entry in the 'dir' or 'bdir' | |
| 3968 * option "dname". | |
| 3969 * - If "dname" is ".", return "fname" (swap file in dir of file). | |
| 3970 * - If "dname" starts with "./", insert "dname" in "fname" (swap file | |
| 3971 * relative to dir of file). | |
| 3972 * - Otherwise, prepend "dname" to the tail of "fname" (swap file in specific | |
| 3973 * dir). | |
| 3974 * | |
| 3975 * The return value is an allocated string and can be NULL. | |
| 3976 */ | |
| 3977 char_u * | |
|
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7803
diff
changeset
|
3978 get_file_in_dir( |
|
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diff
changeset
|
3979 char_u *fname, |
|
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diff
changeset
|
3980 char_u *dname) /* don't use "dirname", it is a global for Alpha */ |
| 7 | 3981 { |
| 3982 char_u *t; | |
| 3983 char_u *tail; | |
| 3984 char_u *retval; | |
| 3985 int save_char; | |
| 3986 | |
| 3987 tail = gettail(fname); | |
| 3988 | |
| 3989 if (dname[0] == '.' && dname[1] == NUL) | |
| 3990 retval = vim_strsave(fname); | |
| 3991 else if (dname[0] == '.' && vim_ispathsep(dname[1])) | |
| 3992 { | |
| 3993 if (tail == fname) /* no path before file name */ | |
| 3994 retval = concat_fnames(dname + 2, tail, TRUE); | |
| 3995 else | |
| 3996 { | |
| 3997 save_char = *tail; | |
| 3998 *tail = NUL; | |
| 3999 t = concat_fnames(fname, dname + 2, TRUE); | |
| 4000 *tail = save_char; | |
| 4001 if (t == NULL) /* out of memory */ | |
| 4002 retval = NULL; | |
| 4003 else | |
| 4004 { | |
| 4005 retval = concat_fnames(t, tail, TRUE); | |
| 4006 vim_free(t); | |
| 4007 } | |
| 4008 } | |
| 4009 } | |
| 4010 else | |
| 4011 retval = concat_fnames(dname, tail, TRUE); | |
| 4012 | |
| 5432 | 4013 #ifdef WIN3264 |
| 4014 if (retval != NULL) | |
|
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|
4015 for (t = gettail(retval); *t != NUL; MB_PTR_ADV(t)) |
| 5432 | 4016 if (*t == ':') |
| 4017 *t = '%'; | |
| 4018 #endif | |
| 4019 | |
| 7 | 4020 return retval; |
| 4021 } | |
| 4022 | |
|
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7410
diff
changeset
|
4023 static void attention_message(buf_T *buf, char_u *fname); |
| 580 | 4024 |
| 4025 /* | |
| 4026 * Print the ATTENTION message: info about an existing swap file. | |
| 4027 */ | |
| 4028 static void | |
|
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diff
changeset
|
4029 attention_message( |
|
41789f16d6b2
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diff
changeset
|
4030 buf_T *buf, /* buffer being edited */ |
|
41789f16d6b2
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diff
changeset
|
4031 char_u *fname) /* swap file name */ |
| 580 | 4032 { |
|
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9295
diff
changeset
|
4033 stat_T st; |
| 580 | 4034 time_t x, sx; |
| 1001 | 4035 char *p; |
| 580 | 4036 |
| 4037 ++no_wait_return; | |
| 4038 (void)EMSG(_("E325: ATTENTION")); | |
| 4039 MSG_PUTS(_("\nFound a swap file by the name \"")); | |
| 4040 msg_home_replace(fname); | |
| 4041 MSG_PUTS("\"\n"); | |
| 4042 sx = swapfile_info(fname); | |
| 4043 MSG_PUTS(_("While opening file \"")); | |
| 4044 msg_outtrans(buf->b_fname); | |
| 4045 MSG_PUTS("\"\n"); | |
| 4046 if (mch_stat((char *)buf->b_fname, &st) != -1) | |
| 4047 { | |
| 4048 MSG_PUTS(_(" dated: ")); | |
| 4049 x = st.st_mtime; /* Manx C can't do &st.st_mtime */ | |
| 1001 | 4050 p = ctime(&x); /* includes '\n' */ |
| 4051 if (p == NULL) | |
| 4052 MSG_PUTS("(invalid)\n"); | |
| 4053 else | |
| 4054 MSG_PUTS(p); | |
| 580 | 4055 if (sx != 0 && x > sx) |
| 4056 MSG_PUTS(_(" NEWER than swap file!\n")); | |
| 4057 } | |
| 4058 /* Some of these messages are long to allow translation to | |
| 4059 * other languages. */ | |
|
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Christian Brabandt <cb@256bit.org>
parents:
7827
diff
changeset
|
4060 MSG_PUTS(_("\n(1) Another program may be editing the same file. If this is the case,\n be careful not to end up with two different instances of the same\n file when making changes. Quit, or continue with caution.\n")); |
| 2703 | 4061 MSG_PUTS(_("(2) An edit session for this file crashed.\n")); |
| 580 | 4062 MSG_PUTS(_(" If this is the case, use \":recover\" or \"vim -r ")); |
| 4063 msg_outtrans(buf->b_fname); | |
| 4064 MSG_PUTS(_("\"\n to recover the changes (see \":help recovery\").\n")); | |
| 4065 MSG_PUTS(_(" If you did this already, delete the swap file \"")); | |
| 4066 msg_outtrans(fname); | |
| 4067 MSG_PUTS(_("\"\n to avoid this message.\n")); | |
| 4068 cmdline_row = msg_row; | |
| 4069 --no_wait_return; | |
| 4070 } | |
| 4071 | |
|
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|
4072 #if defined(FEAT_EVAL) |
|
7803
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Christian Brabandt <cb@256bit.org>
parents:
7410
diff
changeset
|
4073 static int do_swapexists(buf_T *buf, char_u *fname); |
| 580 | 4074 |
| 4075 /* | |
| 4076 * Trigger the SwapExists autocommands. | |
| 4077 * Returns a value for equivalent to do_dialog() (see below): | |
| 4078 * 0: still need to ask for a choice | |
| 4079 * 1: open read-only | |
| 4080 * 2: edit anyway | |
| 4081 * 3: recover | |
| 4082 * 4: delete it | |
| 4083 * 5: quit | |
| 4084 * 6: abort | |
| 4085 */ | |
| 4086 static int | |
|
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parents:
7803
diff
changeset
|
4087 do_swapexists(buf_T *buf, char_u *fname) |
| 580 | 4088 { |
| 4089 set_vim_var_string(VV_SWAPNAME, fname, -1); | |
| 4090 set_vim_var_string(VV_SWAPCHOICE, NULL, -1); | |
| 4091 | |
| 4092 /* Trigger SwapExists autocommands with <afile> set to the file being | |
| 1856 | 4093 * edited. Disallow changing directory here. */ |
| 4094 ++allbuf_lock; | |
| 580 | 4095 apply_autocmds(EVENT_SWAPEXISTS, buf->b_fname, NULL, FALSE, NULL); |
| 1856 | 4096 --allbuf_lock; |
| 580 | 4097 |
| 4098 set_vim_var_string(VV_SWAPNAME, NULL, -1); | |
| 4099 | |
| 4100 switch (*get_vim_var_str(VV_SWAPCHOICE)) | |
| 4101 { | |
| 4102 case 'o': return 1; | |
| 4103 case 'e': return 2; | |
| 4104 case 'r': return 3; | |
| 4105 case 'd': return 4; | |
| 4106 case 'q': return 5; | |
| 4107 case 'a': return 6; | |
| 4108 } | |
| 4109 | |
| 4110 return 0; | |
| 4111 } | |
| 4112 #endif | |
| 4113 | |
| 7 | 4114 /* |
| 4115 * Find out what name to use for the swap file for buffer 'buf'. | |
| 4116 * | |
| 4117 * Several names are tried to find one that does not exist | |
| 460 | 4118 * Returns the name in allocated memory or NULL. |
| 3158 | 4119 * When out of memory "dirp" is set to NULL. |
| 7 | 4120 * |
| 4121 * Note: If BASENAMELEN is not correct, you will get error messages for | |
|
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4122 * not being able to open the swap or undo file |
| 1856 | 4123 * Note: May trigger SwapExists autocmd, pointers may change! |
| 7 | 4124 */ |
| 4125 static char_u * | |
|
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parents:
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diff
changeset
|
4126 findswapname( |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
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parents:
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diff
changeset
|
4127 buf_T *buf, |
|
41789f16d6b2
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diff
changeset
|
4128 char_u **dirp, /* pointer to list of directories */ |
|
41789f16d6b2
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parents:
7803
diff
changeset
|
4129 char_u *old_fname) /* don't give warning for this file name */ |
| 7 | 4130 { |
| 4131 char_u *fname; | |
| 4132 int n; | |
| 4133 char_u *dir_name; | |
| 4134 #ifdef AMIGA | |
| 4135 BPTR fh; | |
| 4136 #endif | |
| 4137 int r; | |
| 5432 | 4138 char_u *buf_fname = buf->b_fname; |
| 7 | 4139 |
|
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diff
changeset
|
4140 #if !defined(UNIX) |
| 7 | 4141 # define CREATE_DUMMY_FILE |
| 4142 FILE *dummyfd = NULL; | |
| 4143 | |
| 5432 | 4144 # ifdef WIN3264 |
| 4145 if (buf_fname != NULL && !mch_isFullName(buf_fname) | |
| 4146 && vim_strchr(gettail(buf_fname), ':')) | |
| 4147 { | |
| 4148 char_u *t; | |
| 4149 | |
| 4150 buf_fname = vim_strsave(buf_fname); | |
| 4151 if (buf_fname == NULL) | |
| 4152 buf_fname = buf->b_fname; | |
| 4153 else | |
|
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|
4154 for (t = gettail(buf_fname); *t != NUL; MB_PTR_ADV(t)) |
| 5432 | 4155 if (*t == ':') |
| 4156 *t = '%'; | |
| 4157 } | |
| 4158 # endif | |
| 4159 | |
|
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parents:
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4160 /* |
|
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changeset
|
4161 * If we start editing a new file, e.g. "test.doc", which resides on an |
|
f8222d1f9a73
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Bram Moolenaar <bram@vim.org>
parents:
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changeset
|
4162 * MSDOS compatible filesystem, it is possible that the file |
|
f8222d1f9a73
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parents:
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diff
changeset
|
4163 * "test.doc.swp" which we create will be exactly the same file. To avoid |
|
f8222d1f9a73
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parents:
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|
4164 * this problem we temporarily create "test.doc". Don't do this when the |
|
f8222d1f9a73
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parents:
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4165 * check below for a 8.3 file name is used. |
|
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parents:
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changeset
|
4166 */ |
| 5432 | 4167 if (!(buf->b_p_sn || buf->b_shortname) && buf_fname != NULL |
| 4168 && mch_getperm(buf_fname) < 0) | |
| 4169 dummyfd = mch_fopen((char *)buf_fname, "w"); | |
| 7 | 4170 #endif |
| 4171 | |
|
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4172 /* |
|
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4173 * Isolate a directory name from *dirp and put it in dir_name. |
|
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parents:
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4174 * First allocate some memory to put the directory name in. |
|
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parents:
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|
4175 */ |
| 7 | 4176 dir_name = alloc((unsigned)STRLEN(*dirp) + 1); |
| 3158 | 4177 if (dir_name == NULL) |
| 4178 *dirp = NULL; | |
| 4179 else | |
| 7 | 4180 (void)copy_option_part(dirp, dir_name, 31000, ","); |
| 4181 | |
|
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4182 /* |
|
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4183 * we try different names until we find one that does not exist yet |
|
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parents:
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diff
changeset
|
4184 */ |
| 7 | 4185 if (dir_name == NULL) /* out of memory */ |
| 4186 fname = NULL; | |
| 4187 else | |
| 5432 | 4188 fname = makeswapname(buf_fname, buf->b_ffname, buf, dir_name); |
| 7 | 4189 |
| 4190 for (;;) | |
| 4191 { | |
| 4192 if (fname == NULL) /* must be out of memory */ | |
| 4193 break; | |
| 4194 if ((n = (int)STRLEN(fname)) == 0) /* safety check */ | |
| 4195 { | |
|
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changeset
|
4196 VIM_CLEAR(fname); |
| 7 | 4197 break; |
| 4198 } | |
|
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7961
diff
changeset
|
4199 #if defined(UNIX) |
| 7 | 4200 /* |
| 4201 * Some systems have a MS-DOS compatible filesystem that use 8.3 character | |
| 4202 * file names. If this is the first try and the swap file name does not fit in | |
| 4203 * 8.3, detect if this is the case, set shortname and try again. | |
| 4204 */ | |
| 4205 if (fname[n - 2] == 'w' && fname[n - 1] == 'p' | |
| 4206 && !(buf->b_p_sn || buf->b_shortname)) | |
| 4207 { | |
| 4208 char_u *tail; | |
| 4209 char_u *fname2; | |
|
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9295
diff
changeset
|
4210 stat_T s1, s2; |
| 7 | 4211 int f1, f2; |
| 4212 int created1 = FALSE, created2 = FALSE; | |
| 4213 int same = FALSE; | |
| 4214 | |
| 4215 /* | |
| 4216 * Check if swapfile name does not fit in 8.3: | |
| 4217 * It either contains two dots, is longer than 8 chars, or starts | |
| 4218 * with a dot. | |
| 4219 */ | |
| 5432 | 4220 tail = gettail(buf_fname); |
| 7 | 4221 if ( vim_strchr(tail, '.') != NULL |
| 4222 || STRLEN(tail) > (size_t)8 | |
| 4223 || *gettail(fname) == '.') | |
| 4224 { | |
| 4225 fname2 = alloc(n + 2); | |
| 4226 if (fname2 != NULL) | |
| 4227 { | |
| 4228 STRCPY(fname2, fname); | |
| 4229 /* if fname == "xx.xx.swp", fname2 = "xx.xx.swx" | |
| 4230 * if fname == ".xx.swp", fname2 = ".xx.swpx" | |
| 4231 * if fname == "123456789.swp", fname2 = "12345678x.swp" | |
| 4232 */ | |
| 4233 if (vim_strchr(tail, '.') != NULL) | |
| 4234 fname2[n - 1] = 'x'; | |
| 4235 else if (*gettail(fname) == '.') | |
| 4236 { | |
| 4237 fname2[n] = 'x'; | |
| 4238 fname2[n + 1] = NUL; | |
| 4239 } | |
| 4240 else | |
| 4241 fname2[n - 5] += 1; | |
| 4242 /* | |
| 4243 * may need to create the files to be able to use mch_stat() | |
| 4244 */ | |
| 4245 f1 = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
| 4246 if (f1 < 0) | |
| 4247 { | |
| 4248 f1 = mch_open_rw((char *)fname, | |
| 4249 O_RDWR|O_CREAT|O_EXCL|O_EXTRA); | |
| 4250 created1 = TRUE; | |
| 4251 } | |
| 4252 if (f1 >= 0) | |
| 4253 { | |
| 4254 f2 = mch_open((char *)fname2, O_RDONLY | O_EXTRA, 0); | |
| 4255 if (f2 < 0) | |
| 4256 { | |
| 4257 f2 = mch_open_rw((char *)fname2, | |
| 4258 O_RDWR|O_CREAT|O_EXCL|O_EXTRA); | |
| 4259 created2 = TRUE; | |
| 4260 } | |
| 4261 if (f2 >= 0) | |
| 4262 { | |
| 4263 /* | |
| 4264 * Both files exist now. If mch_stat() returns the | |
| 4265 * same device and inode they are the same file. | |
| 4266 */ | |
| 4267 if (mch_fstat(f1, &s1) != -1 | |
| 4268 && mch_fstat(f2, &s2) != -1 | |
| 4269 && s1.st_dev == s2.st_dev | |
| 4270 && s1.st_ino == s2.st_ino) | |
| 4271 same = TRUE; | |
| 4272 close(f2); | |
| 4273 if (created2) | |
| 4274 mch_remove(fname2); | |
| 4275 } | |
| 4276 close(f1); | |
| 4277 if (created1) | |
| 4278 mch_remove(fname); | |
| 4279 } | |
| 4280 vim_free(fname2); | |
| 4281 if (same) | |
| 4282 { | |
| 4283 buf->b_shortname = TRUE; | |
| 4284 vim_free(fname); | |
| 5432 | 4285 fname = makeswapname(buf_fname, buf->b_ffname, |
| 460 | 4286 buf, dir_name); |
| 7 | 4287 continue; /* try again with b_shortname set */ |
| 4288 } | |
| 4289 } | |
| 4290 } | |
| 4291 } | |
| 4292 #endif | |
| 4293 /* | |
| 4294 * check if the swapfile already exists | |
| 4295 */ | |
| 4296 if (mch_getperm(fname) < 0) /* it does not exist */ | |
| 4297 { | |
| 4298 #ifdef HAVE_LSTAT | |
|
9387
f094d4085014
commit https://github.com/vim/vim/commit/8767f52fbfd4f053ce00a978227c95f1d7d323fe
Christian Brabandt <cb@256bit.org>
parents:
9295
diff
changeset
|
4299 stat_T sb; |
| 7 | 4300 |
| 4301 /* | |
| 4302 * Extra security check: When a swap file is a symbolic link, this | |
| 4303 * is most likely a symlink attack. | |
| 4304 */ | |
| 4305 if (mch_lstat((char *)fname, &sb) < 0) | |
| 4306 #else | |
| 4307 # ifdef AMIGA | |
| 4308 fh = Open((UBYTE *)fname, (long)MODE_NEWFILE); | |
| 4309 /* | |
| 4310 * on the Amiga mch_getperm() will return -1 when the file exists | |
| 4311 * but is being used by another program. This happens if you edit | |
| 4312 * a file twice. | |
| 4313 */ | |
| 4314 if (fh != (BPTR)NULL) /* can open file, OK */ | |
| 4315 { | |
| 4316 Close(fh); | |
| 4317 mch_remove(fname); | |
| 4318 break; | |
| 4319 } | |
| 4320 if (IoErr() != ERROR_OBJECT_IN_USE | |
| 4321 && IoErr() != ERROR_OBJECT_EXISTS) | |
| 4322 # endif | |
| 4323 #endif | |
| 4324 break; | |
| 4325 } | |
| 4326 | |
| 4327 /* | |
| 4328 * A file name equal to old_fname is OK to use. | |
| 4329 */ | |
| 4330 if (old_fname != NULL && fnamecmp(fname, old_fname) == 0) | |
| 4331 break; | |
| 4332 | |
| 4333 /* | |
| 4334 * get here when file already exists | |
| 4335 */ | |
| 4336 if (fname[n - 2] == 'w' && fname[n - 1] == 'p') /* first try */ | |
| 4337 { | |
| 4338 /* | |
| 4339 * on MS-DOS compatible filesystems (e.g. messydos) file.doc.swp | |
| 4340 * and file.doc are the same file. To guess if this problem is | |
| 4341 * present try if file.doc.swx exists. If it does, we set | |
| 4342 * buf->b_shortname and try file_doc.swp (dots replaced by | |
| 4343 * underscores for this file), and try again. If it doesn't we | |
| 4344 * assume that "file.doc.swp" already exists. | |
| 4345 */ | |
| 4346 if (!(buf->b_p_sn || buf->b_shortname)) /* not tried yet */ | |
| 4347 { | |
| 4348 fname[n - 1] = 'x'; | |
| 4349 r = mch_getperm(fname); /* try "file.swx" */ | |
| 4350 fname[n - 1] = 'p'; | |
| 4351 if (r >= 0) /* "file.swx" seems to exist */ | |
| 4352 { | |
| 4353 buf->b_shortname = TRUE; | |
| 4354 vim_free(fname); | |
| 5432 | 4355 fname = makeswapname(buf_fname, buf->b_ffname, |
| 460 | 4356 buf, dir_name); |
| 7 | 4357 continue; /* try again with '.' replaced with '_' */ |
| 4358 } | |
| 4359 } | |
| 4360 /* | |
| 4361 * If we get here the ".swp" file really exists. | |
| 4362 * Give an error message, unless recovering, no file name, we are | |
| 4363 * viewing a help file or when the path of the file is different | |
| 4364 * (happens when all .swp files are in one directory). | |
| 4365 */ | |
| 5432 | 4366 if (!recoverymode && buf_fname != NULL |
| 43 | 4367 && !buf->b_help && !(buf->b_flags & BF_DUMMY)) |
| 7 | 4368 { |
| 4369 int fd; | |
| 4370 struct block0 b0; | |
| 4371 int differ = FALSE; | |
| 4372 | |
| 4373 /* | |
| 4374 * Try to read block 0 from the swap file to get the original | |
| 4375 * file name (and inode number). | |
| 4376 */ | |
| 4377 fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
| 4378 if (fd >= 0) | |
| 4379 { | |
| 2664 | 4380 if (read_eintr(fd, &b0, sizeof(b0)) == sizeof(b0)) |
| 7 | 4381 { |
| 4382 /* | |
| 39 | 4383 * If the swapfile has the same directory as the |
| 4384 * buffer don't compare the directory names, they can | |
| 4385 * have a different mountpoint. | |
| 7 | 4386 */ |
| 39 | 4387 if (b0.b0_flags & B0_SAME_DIR) |
| 4388 { | |
| 4389 if (fnamecmp(gettail(buf->b_ffname), | |
| 4390 gettail(b0.b0_fname)) != 0 | |
| 4391 || !same_directory(fname, buf->b_ffname)) | |
| 594 | 4392 { |
| 4393 #ifdef CHECK_INODE | |
| 4394 /* Symlinks may point to the same file even | |
| 4395 * when the name differs, need to check the | |
| 4396 * inode too. */ | |
| 4397 expand_env(b0.b0_fname, NameBuff, MAXPATHL); | |
| 4398 if (fnamecmp_ino(buf->b_ffname, NameBuff, | |
| 4399 char_to_long(b0.b0_ino))) | |
| 4400 #endif | |
| 4401 differ = TRUE; | |
| 4402 } | |
| 39 | 4403 } |
| 4404 else | |
| 4405 { | |
| 4406 /* | |
| 4407 * The name in the swap file may be | |
| 4408 * "~user/path/file". Expand it first. | |
| 4409 */ | |
| 4410 expand_env(b0.b0_fname, NameBuff, MAXPATHL); | |
| 7 | 4411 #ifdef CHECK_INODE |
| 39 | 4412 if (fnamecmp_ino(buf->b_ffname, NameBuff, |
| 594 | 4413 char_to_long(b0.b0_ino))) |
| 39 | 4414 differ = TRUE; |
| 7 | 4415 #else |
| 39 | 4416 if (fnamecmp(NameBuff, buf->b_ffname) != 0) |
| 4417 differ = TRUE; | |
| 7 | 4418 #endif |
| 39 | 4419 } |
| 7 | 4420 } |
| 4421 close(fd); | |
| 4422 } | |
| 4423 | |
| 4424 /* give the ATTENTION message when there is an old swap file | |
| 4425 * for the current file, and the buffer was not recovered. */ | |
| 4426 if (differ == FALSE && !(curbuf->b_flags & BF_RECOVERED) | |
| 4427 && vim_strchr(p_shm, SHM_ATTENTION) == NULL) | |
| 4428 { | |
| 580 | 4429 #if defined(HAS_SWAP_EXISTS_ACTION) |
| 4430 int choice = 0; | |
| 4431 #endif | |
| 7 | 4432 #ifdef CREATE_DUMMY_FILE |
| 4433 int did_use_dummy = FALSE; | |
| 4434 | |
| 4435 /* Avoid getting a warning for the file being created | |
| 4436 * outside of Vim, it was created at the start of this | |
| 4437 * function. Delete the file now, because Vim might exit | |
| 4438 * here if the window is closed. */ | |
| 4439 if (dummyfd != NULL) | |
| 4440 { | |
| 4441 fclose(dummyfd); | |
| 4442 dummyfd = NULL; | |
| 5432 | 4443 mch_remove(buf_fname); |
| 7 | 4444 did_use_dummy = TRUE; |
| 4445 } | |
| 4446 #endif | |
| 4447 | |
|
9536
b2aada04d84e
commit https://github.com/vim/vim/commit/a06ecab7a5159e744448ace731036f0dc5f87dd4
Christian Brabandt <cb@256bit.org>
parents:
9387
diff
changeset
|
4448 #if (defined(UNIX) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)) |
| 7 | 4449 process_still_running = FALSE; |
| 4450 #endif | |
|
13380
69517d67421f
patch 8.0.1564: too many #ifdefs
Christian Brabandt <cb@256bit.org>
parents:
13244
diff
changeset
|
4451 #if defined(FEAT_EVAL) |
| 580 | 4452 /* |
| 4453 * If there is an SwapExists autocommand and we can handle | |
| 4454 * the response, trigger it. It may return 0 to ask the | |
| 4455 * user anyway. | |
| 4456 */ | |
| 4457 if (swap_exists_action != SEA_NONE | |
| 5432 | 4458 && has_autocmd(EVENT_SWAPEXISTS, buf_fname, buf)) |
| 580 | 4459 choice = do_swapexists(buf, fname); |
| 4460 | |
| 4461 if (choice == 0) | |
| 4462 #endif | |
| 7 | 4463 { |
| 580 | 4464 #ifdef FEAT_GUI |
| 4465 /* If we are supposed to start the GUI but it wasn't | |
| 4466 * completely started yet, start it now. This makes | |
| 4467 * the messages displayed in the Vim window when | |
| 4468 * loading a session from the .gvimrc file. */ | |
| 4469 if (gui.starting && !gui.in_use) | |
| 4470 gui_start(); | |
| 4471 #endif | |
| 4472 /* Show info about the existing swap file. */ | |
| 4473 attention_message(buf, fname); | |
| 4474 | |
| 4475 /* We don't want a 'q' typed at the more-prompt | |
| 4476 * interrupt loading a file. */ | |
| 4477 got_int = FALSE; | |
| 7 | 4478 } |
| 4479 | |
| 4480 #if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) | |
| 580 | 4481 if (swap_exists_action != SEA_NONE && choice == 0) |
| 7 | 4482 { |
| 4483 char_u *name; | |
| 4484 | |
| 4485 name = alloc((unsigned)(STRLEN(fname) | |
| 4486 + STRLEN(_("Swap file \"")) | |
| 4487 + STRLEN(_("\" already exists!")) + 5)); | |
| 4488 if (name != NULL) | |
| 4489 { | |
| 4490 STRCPY(name, _("Swap file \"")); | |
| 4491 home_replace(NULL, fname, name + STRLEN(name), | |
| 4492 1000, TRUE); | |
| 4493 STRCAT(name, _("\" already exists!")); | |
| 4494 } | |
| 580 | 4495 choice = do_dialog(VIM_WARNING, |
| 7 | 4496 (char_u *)_("VIM - ATTENTION"), |
| 4497 name == NULL | |
| 4498 ? (char_u *)_("Swap file already exists!") | |
| 4499 : name, | |
|
9536
b2aada04d84e
commit https://github.com/vim/vim/commit/a06ecab7a5159e744448ace731036f0dc5f87dd4
Christian Brabandt <cb@256bit.org>
parents:
9387
diff
changeset
|
4500 # if defined(UNIX) || defined(VMS) |
| 7 | 4501 process_still_running |
| 4502 ? (char_u *)_("&Open Read-Only\n&Edit anyway\n&Recover\n&Quit\n&Abort") : | |
| 4503 # endif | |
| 2684 | 4504 (char_u *)_("&Open Read-Only\n&Edit anyway\n&Recover\n&Delete it\n&Quit\n&Abort"), 1, NULL, FALSE); |
| 580 | 4505 |
|
9536
b2aada04d84e
commit https://github.com/vim/vim/commit/a06ecab7a5159e744448ace731036f0dc5f87dd4
Christian Brabandt <cb@256bit.org>
parents:
9387
diff
changeset
|
4506 # if defined(UNIX) || defined(VMS) |
| 580 | 4507 if (process_still_running && choice >= 4) |
| 4508 choice++; /* Skip missing "Delete it" button */ | |
| 4509 # endif | |
| 4510 vim_free(name); | |
| 4511 | |
| 4512 /* pretend screen didn't scroll, need redraw anyway */ | |
| 4513 msg_scrolled = 0; | |
| 4514 redraw_all_later(NOT_VALID); | |
| 4515 } | |
| 4516 #endif | |
| 4517 | |
| 4518 #if defined(HAS_SWAP_EXISTS_ACTION) | |
| 4519 if (choice > 0) | |
| 4520 { | |
| 4521 switch (choice) | |
| 7 | 4522 { |
| 4523 case 1: | |
| 4524 buf->b_p_ro = TRUE; | |
| 4525 break; | |
| 4526 case 2: | |
| 4527 break; | |
| 4528 case 3: | |
| 4529 swap_exists_action = SEA_RECOVER; | |
| 4530 break; | |
| 4531 case 4: | |
| 580 | 4532 mch_remove(fname); |
| 4533 break; | |
| 4534 case 5: | |
| 7 | 4535 swap_exists_action = SEA_QUIT; |
| 4536 break; | |
| 580 | 4537 case 6: |
| 7 | 4538 swap_exists_action = SEA_QUIT; |
| 4539 got_int = TRUE; | |
| 4540 break; | |
| 4541 } | |
| 4542 | |
| 4543 /* If the file was deleted this fname can be used. */ | |
| 4544 if (mch_getperm(fname) < 0) | |
| 4545 break; | |
| 4546 } | |
| 4547 else | |
| 4548 #endif | |
| 4549 { | |
| 4550 MSG_PUTS("\n"); | |
| 625 | 4551 if (msg_silent == 0) |
| 4552 /* call wait_return() later */ | |
| 4553 need_wait_return = TRUE; | |
| 7 | 4554 } |
| 4555 | |
| 4556 #ifdef CREATE_DUMMY_FILE | |
| 4557 /* Going to try another name, need the dummy file again. */ | |
| 4558 if (did_use_dummy) | |
| 5432 | 4559 dummyfd = mch_fopen((char *)buf_fname, "w"); |
| 7 | 4560 #endif |
| 4561 } | |
| 4562 } | |
| 4563 } | |
| 4564 | |
| 4565 /* | |
| 4566 * Change the ".swp" extension to find another file that can be used. | |
| 4567 * First decrement the last char: ".swo", ".swn", etc. | |
| 4568 * If that still isn't enough decrement the last but one char: ".svz" | |
| 9 | 4569 * Can happen when editing many "No Name" buffers. |
| 7 | 4570 */ |
| 4571 if (fname[n - 1] == 'a') /* ".s?a" */ | |
| 4572 { | |
| 4573 if (fname[n - 2] == 'a') /* ".saa": tried enough, give up */ | |
| 4574 { | |
| 4575 EMSG(_("E326: Too many swap files found")); | |
|
13244
ac42c4b11dbc
patch 8.0.1496: clearing a pointer takes two lines
Christian Brabandt <cb@256bit.org>
parents:
12975
diff
changeset
|
4576 VIM_CLEAR(fname); |
| 7 | 4577 break; |
| 4578 } | |
| 4579 --fname[n - 2]; /* ".svz", ".suz", etc. */ | |
| 4580 fname[n - 1] = 'z' + 1; | |
| 4581 } | |
| 4582 --fname[n - 1]; /* ".swo", ".swn", etc. */ | |
| 4583 } | |
| 4584 | |
| 4585 vim_free(dir_name); | |
| 4586 #ifdef CREATE_DUMMY_FILE | |
| 4587 if (dummyfd != NULL) /* file has been created temporarily */ | |
| 4588 { | |
| 4589 fclose(dummyfd); | |
| 5432 | 4590 mch_remove(buf_fname); |
| 7 | 4591 } |
| 4592 #endif | |
| 5432 | 4593 #ifdef WIN3264 |
| 4594 if (buf_fname != buf->b_fname) | |
| 4595 vim_free(buf_fname); | |
| 4596 #endif | |
| 7 | 4597 return fname; |
| 4598 } | |
| 4599 | |
| 4600 static int | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4601 b0_magic_wrong(ZERO_BL *b0p) |
| 7 | 4602 { |
| 4603 return (b0p->b0_magic_long != (long)B0_MAGIC_LONG | |
| 4604 || b0p->b0_magic_int != (int)B0_MAGIC_INT | |
| 4605 || b0p->b0_magic_short != (short)B0_MAGIC_SHORT | |
| 4606 || b0p->b0_magic_char != B0_MAGIC_CHAR); | |
| 4607 } | |
| 4608 | |
| 4609 #ifdef CHECK_INODE | |
| 4610 /* | |
| 4611 * Compare current file name with file name from swap file. | |
| 4612 * Try to use inode numbers when possible. | |
| 4613 * Return non-zero when files are different. | |
| 4614 * | |
| 4615 * When comparing file names a few things have to be taken into consideration: | |
| 4616 * - When working over a network the full path of a file depends on the host. | |
| 4617 * We check the inode number if possible. It is not 100% reliable though, | |
| 4618 * because the device number cannot be used over a network. | |
| 4619 * - When a file does not exist yet (editing a new file) there is no inode | |
| 4620 * number. | |
| 4621 * - The file name in a swap file may not be valid on the current host. The | |
| 4622 * "~user" form is used whenever possible to avoid this. | |
| 4623 * | |
| 4624 * This is getting complicated, let's make a table: | |
| 4625 * | |
| 4626 * ino_c ino_s fname_c fname_s differ = | |
| 4627 * | |
| 4628 * both files exist -> compare inode numbers: | |
| 4629 * != 0 != 0 X X ino_c != ino_s | |
| 4630 * | |
| 4631 * inode number(s) unknown, file names available -> compare file names | |
| 4632 * == 0 X OK OK fname_c != fname_s | |
| 4633 * X == 0 OK OK fname_c != fname_s | |
| 4634 * | |
| 4635 * current file doesn't exist, file for swap file exist, file name(s) not | |
| 4636 * available -> probably different | |
| 4637 * == 0 != 0 FAIL X TRUE | |
| 4638 * == 0 != 0 X FAIL TRUE | |
| 4639 * | |
| 4640 * current file exists, inode for swap unknown, file name(s) not | |
| 4641 * available -> probably different | |
| 4642 * != 0 == 0 FAIL X TRUE | |
| 4643 * != 0 == 0 X FAIL TRUE | |
| 4644 * | |
| 4645 * current file doesn't exist, inode for swap unknown, one file name not | |
| 4646 * available -> probably different | |
| 4647 * == 0 == 0 FAIL OK TRUE | |
| 4648 * == 0 == 0 OK FAIL TRUE | |
| 4649 * | |
| 4650 * current file doesn't exist, inode for swap unknown, both file names not | |
|
13896
4d5a1ada407e
patch 8.0.1819: swap file warning for file with non-existing directory
Christian Brabandt <cb@256bit.org>
parents:
13632
diff
changeset
|
4651 * available -> compare file names |
|
4d5a1ada407e
patch 8.0.1819: swap file warning for file with non-existing directory
Christian Brabandt <cb@256bit.org>
parents:
13632
diff
changeset
|
4652 * == 0 == 0 FAIL FAIL fname_c != fname_s |
| 7 | 4653 * |
| 4654 * Note that when the ino_t is 64 bits, only the last 32 will be used. This | |
| 4655 * can't be changed without making the block 0 incompatible with 32 bit | |
| 4656 * versions. | |
| 4657 */ | |
| 4658 | |
| 4659 static int | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4660 fnamecmp_ino( |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4661 char_u *fname_c, /* current file name */ |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4662 char_u *fname_s, /* file name from swap file */ |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4663 long ino_block0) |
| 7 | 4664 { |
|
9387
f094d4085014
commit https://github.com/vim/vim/commit/8767f52fbfd4f053ce00a978227c95f1d7d323fe
Christian Brabandt <cb@256bit.org>
parents:
9295
diff
changeset
|
4665 stat_T st; |
| 7 | 4666 ino_t ino_c = 0; /* ino of current file */ |
| 4667 ino_t ino_s; /* ino of file from swap file */ | |
| 4668 char_u buf_c[MAXPATHL]; /* full path of fname_c */ | |
| 4669 char_u buf_s[MAXPATHL]; /* full path of fname_s */ | |
| 4670 int retval_c; /* flag: buf_c valid */ | |
| 4671 int retval_s; /* flag: buf_s valid */ | |
| 4672 | |
| 4673 if (mch_stat((char *)fname_c, &st) == 0) | |
| 4674 ino_c = (ino_t)st.st_ino; | |
| 4675 | |
| 4676 /* | |
| 4677 * First we try to get the inode from the file name, because the inode in | |
| 4678 * the swap file may be outdated. If that fails (e.g. this path is not | |
| 4679 * valid on this machine), use the inode from block 0. | |
| 4680 */ | |
| 4681 if (mch_stat((char *)fname_s, &st) == 0) | |
| 4682 ino_s = (ino_t)st.st_ino; | |
| 4683 else | |
| 4684 ino_s = (ino_t)ino_block0; | |
| 4685 | |
| 4686 if (ino_c && ino_s) | |
| 4687 return (ino_c != ino_s); | |
| 4688 | |
| 4689 /* | |
| 4690 * One of the inode numbers is unknown, try a forced vim_FullName() and | |
| 4691 * compare the file names. | |
| 4692 */ | |
| 4693 retval_c = vim_FullName(fname_c, buf_c, MAXPATHL, TRUE); | |
| 4694 retval_s = vim_FullName(fname_s, buf_s, MAXPATHL, TRUE); | |
| 4695 if (retval_c == OK && retval_s == OK) | |
|
13896
4d5a1ada407e
patch 8.0.1819: swap file warning for file with non-existing directory
Christian Brabandt <cb@256bit.org>
parents:
13632
diff
changeset
|
4696 return STRCMP(buf_c, buf_s) != 0; |
| 7 | 4697 |
| 4698 /* | |
| 4699 * Can't compare inodes or file names, guess that the files are different, | |
|
13896
4d5a1ada407e
patch 8.0.1819: swap file warning for file with non-existing directory
Christian Brabandt <cb@256bit.org>
parents:
13632
diff
changeset
|
4700 * unless both appear not to exist at all, then compare with the file name |
|
4d5a1ada407e
patch 8.0.1819: swap file warning for file with non-existing directory
Christian Brabandt <cb@256bit.org>
parents:
13632
diff
changeset
|
4701 * in the swap file. |
| 7 | 4702 */ |
| 4703 if (ino_s == 0 && ino_c == 0 && retval_c == FAIL && retval_s == FAIL) | |
|
13896
4d5a1ada407e
patch 8.0.1819: swap file warning for file with non-existing directory
Christian Brabandt <cb@256bit.org>
parents:
13632
diff
changeset
|
4704 return STRCMP(fname_c, fname_s) != 0; |
| 7 | 4705 return TRUE; |
| 4706 } | |
| 4707 #endif /* CHECK_INODE */ | |
| 4708 | |
| 4709 /* | |
| 4710 * Move a long integer into a four byte character array. | |
| 4711 * Used for machine independency in block zero. | |
| 4712 */ | |
| 4713 static void | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4714 long_to_char(long n, char_u *s) |
| 7 | 4715 { |
| 4716 s[0] = (char_u)(n & 0xff); | |
| 4717 n = (unsigned)n >> 8; | |
| 4718 s[1] = (char_u)(n & 0xff); | |
| 4719 n = (unsigned)n >> 8; | |
| 4720 s[2] = (char_u)(n & 0xff); | |
| 4721 n = (unsigned)n >> 8; | |
| 4722 s[3] = (char_u)(n & 0xff); | |
| 4723 } | |
| 4724 | |
| 4725 static long | |
|
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4726 char_to_long(char_u *s) |
| 7 | 4727 { |
| 4728 long retval; | |
| 4729 | |
| 4730 retval = s[3]; | |
| 4731 retval <<= 8; | |
| 4732 retval |= s[2]; | |
| 4733 retval <<= 8; | |
| 4734 retval |= s[1]; | |
| 4735 retval <<= 8; | |
| 4736 retval |= s[0]; | |
| 4737 | |
| 4738 return retval; | |
| 4739 } | |
| 4740 | |
| 39 | 4741 /* |
| 4742 * Set the flags in the first block of the swap file: | |
| 4743 * - file is modified or not: buf->b_changed | |
| 4744 * - 'fileformat' | |
| 4745 * - 'fileencoding' | |
| 4746 */ | |
| 7 | 4747 void |
|
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4748 ml_setflags(buf_T *buf) |
| 7 | 4749 { |
| 4750 bhdr_T *hp; | |
| 4751 ZERO_BL *b0p; | |
| 4752 | |
| 4753 if (!buf->b_ml.ml_mfp) | |
| 4754 return; | |
| 4755 for (hp = buf->b_ml.ml_mfp->mf_used_last; hp != NULL; hp = hp->bh_prev) | |
| 4756 { | |
| 4757 if (hp->bh_bnum == 0) | |
| 4758 { | |
| 4759 b0p = (ZERO_BL *)(hp->bh_data); | |
| 39 | 4760 b0p->b0_dirty = buf->b_changed ? B0_DIRTY : 0; |
| 4761 b0p->b0_flags = (b0p->b0_flags & ~B0_FF_MASK) | |
| 4762 | (get_fileformat(buf) + 1); | |
| 4763 #ifdef FEAT_MBYTE | |
| 4764 add_b0_fenc(b0p, buf); | |
| 4765 #endif | |
| 7 | 4766 hp->bh_flags |= BH_DIRTY; |
| 4767 mf_sync(buf->b_ml.ml_mfp, MFS_ZERO); | |
| 4768 break; | |
| 4769 } | |
| 4770 } | |
| 4771 } | |
| 4772 | |
| 2267 | 4773 #if defined(FEAT_CRYPT) || defined(PROTO) |
| 4774 /* | |
| 4775 * If "data" points to a data block encrypt the text in it and return a copy | |
| 4776 * in allocated memory. Return NULL when out of memory. | |
| 4777 * Otherwise return "data". | |
| 4778 */ | |
| 4779 char_u * | |
|
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4780 ml_encrypt_data( |
|
41789f16d6b2
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4781 memfile_T *mfp, |
|
41789f16d6b2
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4782 char_u *data, |
|
9387
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Christian Brabandt <cb@256bit.org>
parents:
9295
diff
changeset
|
4783 off_T offset, |
|
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4784 unsigned size) |
| 2267 | 4785 { |
| 4786 DATA_BL *dp = (DATA_BL *)data; | |
| 4787 char_u *head_end; | |
| 4788 char_u *text_start; | |
| 4789 char_u *new_data; | |
| 4790 int text_len; | |
| 6122 | 4791 cryptstate_T *state; |
| 2267 | 4792 |
| 4793 if (dp->db_id != DATA_ID) | |
| 4794 return data; | |
| 4795 | |
| 6817 | 4796 state = ml_crypt_prepare(mfp, offset, FALSE); |
| 4797 if (state == NULL) | |
| 4798 return data; | |
| 4799 | |
| 2267 | 4800 new_data = (char_u *)alloc(size); |
| 4801 if (new_data == NULL) | |
| 4802 return NULL; | |
| 4803 head_end = (char_u *)(&dp->db_index[dp->db_line_count]); | |
| 4804 text_start = (char_u *)dp + dp->db_txt_start; | |
| 4805 text_len = size - dp->db_txt_start; | |
| 4806 | |
| 4807 /* Copy the header and the text. */ | |
| 4808 mch_memmove(new_data, dp, head_end - (char_u *)dp); | |
| 4809 | |
| 4810 /* Encrypt the text. */ | |
| 6122 | 4811 crypt_encode(state, text_start, text_len, new_data + dp->db_txt_start); |
| 4812 crypt_free_state(state); | |
| 2267 | 4813 |
| 4814 /* Clear the gap. */ | |
| 4815 if (head_end < text_start) | |
| 4816 vim_memset(new_data + (head_end - data), 0, text_start - head_end); | |
| 4817 | |
| 4818 return new_data; | |
| 4819 } | |
| 4820 | |
| 4821 /* | |
| 6817 | 4822 * Decrypt the text in "data" if it points to an encrypted data block. |
| 2267 | 4823 */ |
| 4824 void | |
|
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4825 ml_decrypt_data( |
|
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parents:
7803
diff
changeset
|
4826 memfile_T *mfp, |
|
41789f16d6b2
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4827 char_u *data, |
|
9387
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Christian Brabandt <cb@256bit.org>
parents:
9295
diff
changeset
|
4828 off_T offset, |
|
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4829 unsigned size) |
| 2267 | 4830 { |
| 4831 DATA_BL *dp = (DATA_BL *)data; | |
| 4832 char_u *head_end; | |
| 4833 char_u *text_start; | |
| 4834 int text_len; | |
| 6122 | 4835 cryptstate_T *state; |
| 2267 | 4836 |
| 4837 if (dp->db_id == DATA_ID) | |
| 4838 { | |
| 4839 head_end = (char_u *)(&dp->db_index[dp->db_line_count]); | |
| 4840 text_start = (char_u *)dp + dp->db_txt_start; | |
| 4841 text_len = dp->db_txt_end - dp->db_txt_start; | |
| 4842 | |
| 4843 if (head_end > text_start || dp->db_txt_start > size | |
| 4844 || dp->db_txt_end > size) | |
| 4845 return; /* data was messed up */ | |
| 4846 | |
| 6122 | 4847 state = ml_crypt_prepare(mfp, offset, TRUE); |
| 6817 | 4848 if (state != NULL) |
| 4849 { | |
| 4850 /* Decrypt the text in place. */ | |
| 4851 crypt_decode_inplace(state, text_start, text_len); | |
| 4852 crypt_free_state(state); | |
| 4853 } | |
| 2267 | 4854 } |
| 4855 } | |
| 4856 | |
| 4857 /* | |
| 4858 * Prepare for encryption/decryption, using the key, seed and offset. | |
| 6122 | 4859 * Return an allocated cryptstate_T *. |
| 2267 | 4860 */ |
| 6122 | 4861 static cryptstate_T * |
|
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Christian Brabandt <cb@256bit.org>
parents:
9295
diff
changeset
|
4862 ml_crypt_prepare(memfile_T *mfp, off_T offset, int reading) |
| 2267 | 4863 { |
| 4864 buf_T *buf = mfp->mf_buffer; | |
| 4865 char_u salt[50]; | |
| 6122 | 4866 int method_nr; |
| 2267 | 4867 char_u *key; |
| 4868 char_u *seed; | |
| 4869 | |
| 4870 if (reading && mfp->mf_old_key != NULL) | |
| 4871 { | |
| 4872 /* Reading back blocks with the previous key/method/seed. */ | |
| 6122 | 4873 method_nr = mfp->mf_old_cm; |
| 2267 | 4874 key = mfp->mf_old_key; |
| 4875 seed = mfp->mf_old_seed; | |
| 4876 } | |
| 4877 else | |
| 4878 { | |
| 6122 | 4879 method_nr = crypt_get_method_nr(buf); |
| 2267 | 4880 key = buf->b_p_key; |
| 4881 seed = mfp->mf_seed; | |
| 4882 } | |
| 6817 | 4883 if (*key == NUL) |
| 4884 return NULL; | |
| 2267 | 4885 |
| 6122 | 4886 if (method_nr == CRYPT_M_ZIP) |
| 2267 | 4887 { |
| 6122 | 4888 /* For PKzip: Append the offset to the key, so that we use a different |
| 4889 * key for every block. */ | |
| 2267 | 4890 vim_snprintf((char *)salt, sizeof(salt), "%s%ld", key, (long)offset); |
| 6122 | 4891 return crypt_create(method_nr, salt, NULL, 0, NULL, 0); |
| 2267 | 4892 } |
| 6122 | 4893 |
| 4894 /* Using blowfish or better: add salt and seed. We use the byte offset | |
| 4895 * of the block for the salt. */ | |
| 4896 vim_snprintf((char *)salt, sizeof(salt), "%ld", (long)offset); | |
| 4897 return crypt_create(method_nr, key, salt, (int)STRLEN(salt), | |
| 4898 seed, MF_SEED_LEN); | |
| 2267 | 4899 } |
| 4900 | |
| 4901 #endif | |
| 4902 | |
| 4903 | |
| 7 | 4904 #if defined(FEAT_BYTEOFF) || defined(PROTO) |
| 4905 | |
| 4906 #define MLCS_MAXL 800 /* max no of lines in chunk */ | |
| 4907 #define MLCS_MINL 400 /* should be half of MLCS_MAXL */ | |
| 4908 | |
| 4909 /* | |
|
2407
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Bram Moolenaar <bram@vim.org>
parents:
2394
diff
changeset
|
4910 * Keep information for finding byte offset of a line, updtype may be one of: |
| 7 | 4911 * ML_CHNK_ADDLINE: Add len to parent chunk, possibly splitting it |
| 4912 * Careful: ML_CHNK_ADDLINE may cause ml_find_line() to be called. | |
| 4913 * ML_CHNK_DELLINE: Subtract len from parent chunk, possibly deleting it | |
| 4914 * ML_CHNK_UPDLINE: Add len to parent chunk, as a signed entity. | |
| 4915 */ | |
| 4916 static void | |
|
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parents:
7803
diff
changeset
|
4917 ml_updatechunk( |
|
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4918 buf_T *buf, |
|
41789f16d6b2
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4919 linenr_T line, |
|
41789f16d6b2
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4920 long len, |
|
41789f16d6b2
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4921 int updtype) |
| 7 | 4922 { |
| 4923 static buf_T *ml_upd_lastbuf = NULL; | |
| 4924 static linenr_T ml_upd_lastline; | |
| 4925 static linenr_T ml_upd_lastcurline; | |
| 4926 static int ml_upd_lastcurix; | |
| 4927 | |
| 4928 linenr_T curline = ml_upd_lastcurline; | |
| 4929 int curix = ml_upd_lastcurix; | |
| 4930 long size; | |
| 4931 chunksize_T *curchnk; | |
| 4932 int rest; | |
| 4933 bhdr_T *hp; | |
| 4934 DATA_BL *dp; | |
| 4935 | |
| 4936 if (buf->b_ml.ml_usedchunks == -1 || len == 0) | |
| 4937 return; | |
| 4938 if (buf->b_ml.ml_chunksize == NULL) | |
| 4939 { | |
| 4940 buf->b_ml.ml_chunksize = (chunksize_T *) | |
| 4941 alloc((unsigned)sizeof(chunksize_T) * 100); | |
| 4942 if (buf->b_ml.ml_chunksize == NULL) | |
| 4943 { | |
| 4944 buf->b_ml.ml_usedchunks = -1; | |
| 4945 return; | |
| 4946 } | |
| 4947 buf->b_ml.ml_numchunks = 100; | |
| 4948 buf->b_ml.ml_usedchunks = 1; | |
| 4949 buf->b_ml.ml_chunksize[0].mlcs_numlines = 1; | |
| 4950 buf->b_ml.ml_chunksize[0].mlcs_totalsize = 1; | |
| 4951 } | |
| 4952 | |
| 4953 if (updtype == ML_CHNK_UPDLINE && buf->b_ml.ml_line_count == 1) | |
| 4954 { | |
| 4955 /* | |
| 4956 * First line in empty buffer from ml_flush_line() -- reset | |
| 4957 */ | |
| 4958 buf->b_ml.ml_usedchunks = 1; | |
| 4959 buf->b_ml.ml_chunksize[0].mlcs_numlines = 1; | |
| 4960 buf->b_ml.ml_chunksize[0].mlcs_totalsize = | |
| 4961 (long)STRLEN(buf->b_ml.ml_line_ptr) + 1; | |
| 4962 return; | |
| 4963 } | |
| 4964 | |
| 4965 /* | |
| 4966 * Find chunk that our line belongs to, curline will be at start of the | |
| 4967 * chunk. | |
| 4968 */ | |
| 4969 if (buf != ml_upd_lastbuf || line != ml_upd_lastline + 1 | |
| 4970 || updtype != ML_CHNK_ADDLINE) | |
| 4971 { | |
| 4972 for (curline = 1, curix = 0; | |
| 4973 curix < buf->b_ml.ml_usedchunks - 1 | |
| 4974 && line >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 4975 curix++) | |
| 4976 { | |
| 4977 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 4978 } | |
| 4979 } | |
| 4980 else if (line >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines | |
| 4981 && curix < buf->b_ml.ml_usedchunks - 1) | |
| 4982 { | |
| 4983 /* Adjust cached curix & curline */ | |
| 4984 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 4985 curix++; | |
| 4986 } | |
| 4987 curchnk = buf->b_ml.ml_chunksize + curix; | |
| 4988 | |
| 4989 if (updtype == ML_CHNK_DELLINE) | |
| 1030 | 4990 len = -len; |
| 7 | 4991 curchnk->mlcs_totalsize += len; |
| 4992 if (updtype == ML_CHNK_ADDLINE) | |
| 4993 { | |
| 4994 curchnk->mlcs_numlines++; | |
| 4995 | |
| 4996 /* May resize here so we don't have to do it in both cases below */ | |
| 4997 if (buf->b_ml.ml_usedchunks + 1 >= buf->b_ml.ml_numchunks) | |
| 4998 { | |
| 6596 | 4999 chunksize_T *t_chunksize = buf->b_ml.ml_chunksize; |
| 5000 | |
| 7 | 5001 buf->b_ml.ml_numchunks = buf->b_ml.ml_numchunks * 3 / 2; |
| 5002 buf->b_ml.ml_chunksize = (chunksize_T *) | |
| 5003 vim_realloc(buf->b_ml.ml_chunksize, | |
| 5004 sizeof(chunksize_T) * buf->b_ml.ml_numchunks); | |
| 5005 if (buf->b_ml.ml_chunksize == NULL) | |
| 5006 { | |
| 5007 /* Hmmmm, Give up on offset for this buffer */ | |
| 6596 | 5008 vim_free(t_chunksize); |
| 7 | 5009 buf->b_ml.ml_usedchunks = -1; |
| 5010 return; | |
| 5011 } | |
| 5012 } | |
| 5013 | |
| 5014 if (buf->b_ml.ml_chunksize[curix].mlcs_numlines >= MLCS_MAXL) | |
| 5015 { | |
| 5016 int count; /* number of entries in block */ | |
| 5017 int idx; | |
| 5018 int text_end; | |
| 5019 int linecnt; | |
| 5020 | |
| 5021 mch_memmove(buf->b_ml.ml_chunksize + curix + 1, | |
| 5022 buf->b_ml.ml_chunksize + curix, | |
| 5023 (buf->b_ml.ml_usedchunks - curix) * | |
| 5024 sizeof(chunksize_T)); | |
| 1855 | 5025 /* Compute length of first half of lines in the split chunk */ |
| 7 | 5026 size = 0; |
| 5027 linecnt = 0; | |
| 5028 while (curline < buf->b_ml.ml_line_count | |
| 5029 && linecnt < MLCS_MINL) | |
| 5030 { | |
| 5031 if ((hp = ml_find_line(buf, curline, ML_FIND)) == NULL) | |
| 5032 { | |
| 5033 buf->b_ml.ml_usedchunks = -1; | |
| 5034 return; | |
| 5035 } | |
| 5036 dp = (DATA_BL *)(hp->bh_data); | |
| 5037 count = (long)(buf->b_ml.ml_locked_high) - | |
| 5038 (long)(buf->b_ml.ml_locked_low) + 1; | |
| 5039 idx = curline - buf->b_ml.ml_locked_low; | |
| 5040 curline = buf->b_ml.ml_locked_high + 1; | |
| 5041 if (idx == 0)/* first line in block, text at the end */ | |
| 5042 text_end = dp->db_txt_end; | |
| 5043 else | |
| 5044 text_end = ((dp->db_index[idx - 1]) & DB_INDEX_MASK); | |
| 5045 /* Compute index of last line to use in this MEMLINE */ | |
| 5046 rest = count - idx; | |
| 5047 if (linecnt + rest > MLCS_MINL) | |
| 5048 { | |
| 5049 idx += MLCS_MINL - linecnt - 1; | |
| 5050 linecnt = MLCS_MINL; | |
| 5051 } | |
| 5052 else | |
| 5053 { | |
| 5054 idx = count - 1; | |
| 5055 linecnt += rest; | |
| 5056 } | |
| 5057 size += text_end - ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 5058 } | |
| 5059 buf->b_ml.ml_chunksize[curix].mlcs_numlines = linecnt; | |
| 5060 buf->b_ml.ml_chunksize[curix + 1].mlcs_numlines -= linecnt; | |
| 5061 buf->b_ml.ml_chunksize[curix].mlcs_totalsize = size; | |
| 5062 buf->b_ml.ml_chunksize[curix + 1].mlcs_totalsize -= size; | |
| 5063 buf->b_ml.ml_usedchunks++; | |
| 5064 ml_upd_lastbuf = NULL; /* Force recalc of curix & curline */ | |
| 5065 return; | |
| 5066 } | |
| 5067 else if (buf->b_ml.ml_chunksize[curix].mlcs_numlines >= MLCS_MINL | |
| 5068 && curix == buf->b_ml.ml_usedchunks - 1 | |
| 5069 && buf->b_ml.ml_line_count - line <= 1) | |
| 5070 { | |
| 5071 /* | |
| 5072 * We are in the last chunk and it is cheap to crate a new one | |
| 5073 * after this. Do it now to avoid the loop above later on | |
| 5074 */ | |
| 5075 curchnk = buf->b_ml.ml_chunksize + curix + 1; | |
| 5076 buf->b_ml.ml_usedchunks++; | |
| 5077 if (line == buf->b_ml.ml_line_count) | |
| 5078 { | |
| 5079 curchnk->mlcs_numlines = 0; | |
| 5080 curchnk->mlcs_totalsize = 0; | |
| 5081 } | |
| 5082 else | |
| 5083 { | |
| 5084 /* | |
| 5085 * Line is just prior to last, move count for last | |
| 5086 * This is the common case when loading a new file | |
| 5087 */ | |
| 5088 hp = ml_find_line(buf, buf->b_ml.ml_line_count, ML_FIND); | |
| 5089 if (hp == NULL) | |
| 5090 { | |
| 5091 buf->b_ml.ml_usedchunks = -1; | |
| 5092 return; | |
| 5093 } | |
| 5094 dp = (DATA_BL *)(hp->bh_data); | |
| 5095 if (dp->db_line_count == 1) | |
| 5096 rest = dp->db_txt_end - dp->db_txt_start; | |
| 5097 else | |
| 5098 rest = | |
| 5099 ((dp->db_index[dp->db_line_count - 2]) & DB_INDEX_MASK) | |
| 5100 - dp->db_txt_start; | |
| 5101 curchnk->mlcs_totalsize = rest; | |
| 5102 curchnk->mlcs_numlines = 1; | |
| 5103 curchnk[-1].mlcs_totalsize -= rest; | |
| 5104 curchnk[-1].mlcs_numlines -= 1; | |
| 5105 } | |
| 5106 } | |
| 5107 } | |
| 5108 else if (updtype == ML_CHNK_DELLINE) | |
| 5109 { | |
| 5110 curchnk->mlcs_numlines--; | |
| 5111 ml_upd_lastbuf = NULL; /* Force recalc of curix & curline */ | |
| 5112 if (curix < (buf->b_ml.ml_usedchunks - 1) | |
| 5113 && (curchnk->mlcs_numlines + curchnk[1].mlcs_numlines) | |
| 5114 <= MLCS_MINL) | |
| 5115 { | |
| 5116 curix++; | |
| 5117 curchnk = buf->b_ml.ml_chunksize + curix; | |
| 5118 } | |
| 5119 else if (curix == 0 && curchnk->mlcs_numlines <= 0) | |
| 5120 { | |
| 5121 buf->b_ml.ml_usedchunks--; | |
| 5122 mch_memmove(buf->b_ml.ml_chunksize, buf->b_ml.ml_chunksize + 1, | |
| 5123 buf->b_ml.ml_usedchunks * sizeof(chunksize_T)); | |
| 5124 return; | |
| 5125 } | |
| 5126 else if (curix == 0 || (curchnk->mlcs_numlines > 10 | |
| 5127 && (curchnk->mlcs_numlines + curchnk[-1].mlcs_numlines) | |
| 5128 > MLCS_MINL)) | |
| 5129 { | |
| 5130 return; | |
| 5131 } | |
| 5132 | |
| 5133 /* Collapse chunks */ | |
| 5134 curchnk[-1].mlcs_numlines += curchnk->mlcs_numlines; | |
| 5135 curchnk[-1].mlcs_totalsize += curchnk->mlcs_totalsize; | |
| 5136 buf->b_ml.ml_usedchunks--; | |
| 5137 if (curix < buf->b_ml.ml_usedchunks) | |
| 5138 { | |
| 5139 mch_memmove(buf->b_ml.ml_chunksize + curix, | |
| 5140 buf->b_ml.ml_chunksize + curix + 1, | |
| 5141 (buf->b_ml.ml_usedchunks - curix) * | |
| 5142 sizeof(chunksize_T)); | |
| 5143 } | |
| 5144 return; | |
| 5145 } | |
| 5146 ml_upd_lastbuf = buf; | |
| 5147 ml_upd_lastline = line; | |
| 5148 ml_upd_lastcurline = curline; | |
| 5149 ml_upd_lastcurix = curix; | |
| 5150 } | |
| 5151 | |
| 5152 /* | |
| 5153 * Find offset for line or line with offset. | |
| 169 | 5154 * Find line with offset if "lnum" is 0; return remaining offset in offp |
| 5155 * Find offset of line if "lnum" > 0 | |
| 7 | 5156 * return -1 if information is not available |
| 5157 */ | |
| 5158 long | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
5159 ml_find_line_or_offset(buf_T *buf, linenr_T lnum, long *offp) |
| 7 | 5160 { |
| 5161 linenr_T curline; | |
| 5162 int curix; | |
| 5163 long size; | |
| 5164 bhdr_T *hp; | |
| 5165 DATA_BL *dp; | |
| 5166 int count; /* number of entries in block */ | |
| 5167 int idx; | |
| 5168 int start_idx; | |
| 5169 int text_end; | |
| 5170 long offset; | |
| 5171 int len; | |
| 5172 int ffdos = (get_fileformat(buf) == EOL_DOS); | |
| 5173 int extra = 0; | |
| 5174 | |
| 169 | 5175 /* take care of cached line first */ |
| 5176 ml_flush_line(curbuf); | |
| 5177 | |
| 7 | 5178 if (buf->b_ml.ml_usedchunks == -1 |
| 5179 || buf->b_ml.ml_chunksize == NULL | |
| 169 | 5180 || lnum < 0) |
| 7 | 5181 return -1; |
| 5182 | |
| 5183 if (offp == NULL) | |
| 5184 offset = 0; | |
| 5185 else | |
| 5186 offset = *offp; | |
| 169 | 5187 if (lnum == 0 && offset <= 0) |
| 7 | 5188 return 1; /* Not a "find offset" and offset 0 _must_ be in line 1 */ |
| 5189 /* | |
| 5190 * Find the last chunk before the one containing our line. Last chunk is | |
| 5191 * special because it will never qualify | |
| 5192 */ | |
| 5193 curline = 1; | |
| 5194 curix = size = 0; | |
| 5195 while (curix < buf->b_ml.ml_usedchunks - 1 | |
| 169 | 5196 && ((lnum != 0 |
| 5197 && lnum >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines) | |
| 7 | 5198 || (offset != 0 |
| 5199 && offset > size + buf->b_ml.ml_chunksize[curix].mlcs_totalsize | |
| 5200 + ffdos * buf->b_ml.ml_chunksize[curix].mlcs_numlines))) | |
| 5201 { | |
| 5202 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 5203 size += buf->b_ml.ml_chunksize[curix].mlcs_totalsize; | |
| 5204 if (offset && ffdos) | |
| 5205 size += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 5206 curix++; | |
| 5207 } | |
| 5208 | |
| 169 | 5209 while ((lnum != 0 && curline < lnum) || (offset != 0 && size < offset)) |
| 7 | 5210 { |
| 5211 if (curline > buf->b_ml.ml_line_count | |
| 5212 || (hp = ml_find_line(buf, curline, ML_FIND)) == NULL) | |
| 5213 return -1; | |
| 5214 dp = (DATA_BL *)(hp->bh_data); | |
| 5215 count = (long)(buf->b_ml.ml_locked_high) - | |
| 5216 (long)(buf->b_ml.ml_locked_low) + 1; | |
| 5217 start_idx = idx = curline - buf->b_ml.ml_locked_low; | |
| 5218 if (idx == 0)/* first line in block, text at the end */ | |
| 5219 text_end = dp->db_txt_end; | |
| 5220 else | |
| 5221 text_end = ((dp->db_index[idx - 1]) & DB_INDEX_MASK); | |
| 5222 /* Compute index of last line to use in this MEMLINE */ | |
| 169 | 5223 if (lnum != 0) |
| 7 | 5224 { |
| 169 | 5225 if (curline + (count - idx) >= lnum) |
| 5226 idx += lnum - curline - 1; | |
| 7 | 5227 else |
| 5228 idx = count - 1; | |
| 5229 } | |
| 5230 else | |
| 5231 { | |
| 5232 extra = 0; | |
| 5233 while (offset >= size | |
| 5234 + text_end - (int)((dp->db_index[idx]) & DB_INDEX_MASK) | |
| 5235 + ffdos) | |
| 5236 { | |
| 5237 if (ffdos) | |
| 5238 size++; | |
| 5239 if (idx == count - 1) | |
| 5240 { | |
| 5241 extra = 1; | |
| 5242 break; | |
| 5243 } | |
| 5244 idx++; | |
| 5245 } | |
| 5246 } | |
| 5247 len = text_end - ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 5248 size += len; | |
| 5249 if (offset != 0 && size >= offset) | |
| 5250 { | |
| 5251 if (size + ffdos == offset) | |
| 5252 *offp = 0; | |
| 5253 else if (idx == start_idx) | |
| 5254 *offp = offset - size + len; | |
| 5255 else | |
| 5256 *offp = offset - size + len | |
| 5257 - (text_end - ((dp->db_index[idx - 1]) & DB_INDEX_MASK)); | |
| 5258 curline += idx - start_idx + extra; | |
| 5259 if (curline > buf->b_ml.ml_line_count) | |
| 5260 return -1; /* exactly one byte beyond the end */ | |
| 5261 return curline; | |
| 5262 } | |
| 5263 curline = buf->b_ml.ml_locked_high + 1; | |
| 5264 } | |
| 5265 | |
| 169 | 5266 if (lnum != 0) |
| 20 | 5267 { |
| 5268 /* Count extra CR characters. */ | |
| 5269 if (ffdos) | |
| 169 | 5270 size += lnum - 1; |
| 20 | 5271 |
| 6933 | 5272 /* Don't count the last line break if 'noeol' and ('bin' or |
| 5273 * 'nofixeol'). */ | |
| 5274 if ((!buf->b_p_fixeol || buf->b_p_bin) && !buf->b_p_eol | |
| 5275 && buf->b_ml.ml_line_count == lnum) | |
| 20 | 5276 size -= ffdos + 1; |
| 5277 } | |
| 5278 | |
| 7 | 5279 return size; |
| 5280 } | |
| 5281 | |
| 5282 /* | |
| 5283 * Goto byte in buffer with offset 'cnt'. | |
| 5284 */ | |
| 5285 void | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
5286 goto_byte(long cnt) |
| 7 | 5287 { |
| 5288 long boff = cnt; | |
| 5289 linenr_T lnum; | |
| 5290 | |
| 5291 ml_flush_line(curbuf); /* cached line may be dirty */ | |
| 5292 setpcmark(); | |
| 5293 if (boff) | |
| 5294 --boff; | |
| 5295 lnum = ml_find_line_or_offset(curbuf, (linenr_T)0, &boff); | |
| 5296 if (lnum < 1) /* past the end */ | |
| 5297 { | |
| 5298 curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; | |
| 5299 curwin->w_curswant = MAXCOL; | |
| 5300 coladvance((colnr_T)MAXCOL); | |
| 5301 } | |
| 5302 else | |
| 5303 { | |
| 5304 curwin->w_cursor.lnum = lnum; | |
| 5305 curwin->w_cursor.col = (colnr_T)boff; | |
| 572 | 5306 # ifdef FEAT_VIRTUALEDIT |
| 5307 curwin->w_cursor.coladd = 0; | |
| 5308 # endif | |
| 7 | 5309 curwin->w_set_curswant = TRUE; |
| 5310 } | |
| 5311 check_cursor(); | |
| 5312 | |
| 5313 # ifdef FEAT_MBYTE | |
| 5314 /* Make sure the cursor is on the first byte of a multi-byte char. */ | |
| 5315 if (has_mbyte) | |
| 5316 mb_adjust_cursor(); | |
| 5317 # endif | |
| 5318 } | |
| 5319 #endif |