Mercurial > vim
annotate src/memline.c @ 12215:faa2a4381b6e
Added tag v8.0.0987 for changeset d2eea20ee14af76b63a3c84803eb70013524734c
| author | Christian Brabandt <cb@256bit.org> |
|---|---|
| date | Tue, 22 Aug 2017 22:30:06 +0200 |
| parents | 501f46f7644c |
| children | 68d7bc045dbe |
| 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 */ | |
| 11 /* #define CHECK(c, s) if (c) EMSG(s) */ | |
| 12 #define CHECK(c, s) | |
| 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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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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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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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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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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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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|
474 * 'cryptmethod' when 'key' is changed. |
| 2267 | 475 */ |
| 476 void | |
|
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|
477 ml_set_crypt_key( |
|
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478 buf_T *buf, |
|
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479 char_u *old_key, |
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
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|
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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|
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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|
538 vim_free(buf->b_ml.ml_stack); |
| 2267 | 539 buf->b_ml.ml_stack = NULL; |
| 540 buf->b_ml.ml_stack_size = 0; /* no stack yet */ | |
| 541 | |
| 542 for ( ; !got_int; line_breakcheck()) | |
| 543 { | |
| 544 if (hp != NULL) | |
| 545 mf_put(mfp, hp, FALSE, FALSE); /* release previous block */ | |
| 546 | |
| 547 /* get the block (pointer or data) */ | |
| 548 if ((hp = mf_get(mfp, (blocknr_T)bnum, page_count)) == NULL) | |
| 549 { | |
| 550 if (bnum == 1) | |
| 551 break; | |
| 552 ++error; | |
| 553 } | |
| 554 else | |
| 555 { | |
| 556 pp = (PTR_BL *)(hp->bh_data); | |
| 557 if (pp->pb_id == PTR_ID) /* it is a pointer block */ | |
| 558 { | |
| 559 if (pp->pb_count == 0) | |
| 560 { | |
| 561 /* empty block? */ | |
| 562 ++error; | |
| 563 } | |
| 564 else if (idx < (int)pp->pb_count) /* go a block deeper */ | |
| 565 { | |
| 566 if (pp->pb_pointer[idx].pe_bnum < 0) | |
| 567 { | |
| 6817 | 568 /* Skip data block with negative block number. |
| 569 * Should not happen, because of the ml_preserve() | |
| 570 * above. Get same block again for next index. */ | |
| 571 ++idx; | |
| 2267 | 572 continue; |
| 573 } | |
| 574 | |
| 575 /* going one block deeper in the tree, new entry in | |
| 576 * stack */ | |
| 577 if ((top = ml_add_stack(buf)) < 0) | |
| 578 { | |
| 579 ++error; | |
| 580 break; /* out of memory */ | |
| 581 } | |
| 582 ip = &(buf->b_ml.ml_stack[top]); | |
| 583 ip->ip_bnum = bnum; | |
| 584 ip->ip_index = idx; | |
| 585 | |
| 586 bnum = pp->pb_pointer[idx].pe_bnum; | |
| 587 page_count = pp->pb_pointer[idx].pe_page_count; | |
| 6817 | 588 idx = 0; |
| 2267 | 589 continue; |
| 590 } | |
| 591 } | |
| 592 else /* not a pointer block */ | |
| 593 { | |
| 594 dp = (DATA_BL *)(hp->bh_data); | |
| 595 if (dp->db_id != DATA_ID) /* block id wrong */ | |
| 596 ++error; | |
| 597 else | |
| 598 { | |
| 599 /* It is a data block, need to write it back to disk. */ | |
| 600 mf_put(mfp, hp, TRUE, FALSE); | |
| 601 hp = NULL; | |
| 602 } | |
| 603 } | |
| 604 } | |
| 605 | |
| 606 if (buf->b_ml.ml_stack_top == 0) /* finished */ | |
| 607 break; | |
| 608 | |
| 609 /* go one block up in the tree */ | |
| 610 ip = &(buf->b_ml.ml_stack[--(buf->b_ml.ml_stack_top)]); | |
| 611 bnum = ip->ip_bnum; | |
| 612 idx = ip->ip_index + 1; /* go to next index */ | |
| 613 page_count = 1; | |
| 614 } | |
| 6817 | 615 if (hp != NULL) |
| 616 mf_put(mfp, hp, FALSE, FALSE); /* release previous block */ | |
| 2657 | 617 |
| 618 if (error > 0) | |
| 619 EMSG(_("E843: Error while updating swap file crypt")); | |
| 2267 | 620 } |
| 621 | |
| 622 mfp->mf_old_key = NULL; | |
| 623 } | |
| 624 #endif | |
| 625 | |
| 7 | 626 /* |
| 627 * ml_setname() is called when the file name of "buf" has been changed. | |
| 628 * It may rename the swap file. | |
| 629 */ | |
| 630 void | |
|
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diff
changeset
|
631 ml_setname(buf_T *buf) |
| 7 | 632 { |
| 633 int success = FALSE; | |
| 634 memfile_T *mfp; | |
| 635 char_u *fname; | |
| 636 char_u *dirp; | |
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diff
changeset
|
637 #if defined(MSWIN) |
| 7 | 638 char_u *p; |
| 639 #endif | |
| 640 | |
| 641 mfp = buf->b_ml.ml_mfp; | |
| 642 if (mfp->mf_fd < 0) /* there is no swap file yet */ | |
| 643 { | |
| 644 /* | |
| 645 * When 'updatecount' is 0 and 'noswapfile' there is no swap file. | |
| 646 * For help files we will make a swap file now. | |
| 647 */ | |
| 5737 | 648 if (p_uc != 0 && !cmdmod.noswapfile) |
| 7 | 649 ml_open_file(buf); /* create a swap file */ |
| 650 return; | |
| 651 } | |
| 652 | |
| 653 /* | |
| 654 * Try all directories in the 'directory' option. | |
| 655 */ | |
| 656 dirp = p_dir; | |
| 657 for (;;) | |
| 658 { | |
| 659 if (*dirp == NUL) /* tried all directories, fail */ | |
| 660 break; | |
| 43 | 661 fname = findswapname(buf, &dirp, mfp->mf_fname); |
| 662 /* alloc's fname */ | |
| 3158 | 663 if (dirp == NULL) /* out of memory */ |
| 664 break; | |
| 7 | 665 if (fname == NULL) /* no file name found for this dir */ |
| 666 continue; | |
| 667 | |
|
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diff
changeset
|
668 #if defined(MSWIN) |
| 7 | 669 /* |
| 670 * Set full pathname for swap file now, because a ":!cd dir" may | |
| 671 * change directory without us knowing it. | |
| 672 */ | |
| 673 p = FullName_save(fname, FALSE); | |
| 674 vim_free(fname); | |
| 675 fname = p; | |
| 676 if (fname == NULL) | |
| 677 continue; | |
| 678 #endif | |
| 679 /* if the file name is the same we don't have to do anything */ | |
| 680 if (fnamecmp(fname, mfp->mf_fname) == 0) | |
| 681 { | |
| 682 vim_free(fname); | |
| 683 success = TRUE; | |
| 684 break; | |
| 685 } | |
| 686 /* need to close the swap file before renaming */ | |
| 687 if (mfp->mf_fd >= 0) | |
| 688 { | |
| 689 close(mfp->mf_fd); | |
| 690 mfp->mf_fd = -1; | |
| 691 } | |
| 692 | |
| 693 /* try to rename the swap file */ | |
| 694 if (vim_rename(mfp->mf_fname, fname) == 0) | |
| 695 { | |
| 696 success = TRUE; | |
| 697 vim_free(mfp->mf_fname); | |
| 698 mfp->mf_fname = fname; | |
| 699 vim_free(mfp->mf_ffname); | |
|
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diff
changeset
|
700 #if defined(MSWIN) |
| 7 | 701 mfp->mf_ffname = NULL; /* mf_fname is full pathname already */ |
| 702 #else | |
| 703 mf_set_ffname(mfp); | |
| 704 #endif | |
| 2267 | 705 ml_upd_block0(buf, UB_SAME_DIR); |
| 7 | 706 break; |
| 707 } | |
| 708 vim_free(fname); /* this fname didn't work, try another */ | |
| 709 } | |
| 710 | |
| 711 if (mfp->mf_fd == -1) /* need to (re)open the swap file */ | |
| 712 { | |
| 713 mfp->mf_fd = mch_open((char *)mfp->mf_fname, O_RDWR | O_EXTRA, 0); | |
| 714 if (mfp->mf_fd < 0) | |
| 715 { | |
| 716 /* could not (re)open the swap file, what can we do???? */ | |
| 717 EMSG(_("E301: Oops, lost the swap file!!!")); | |
| 718 return; | |
| 719 } | |
| 2003 | 720 #ifdef HAVE_FD_CLOEXEC |
| 721 { | |
| 722 int fdflags = fcntl(mfp->mf_fd, F_GETFD); | |
| 723 if (fdflags >= 0 && (fdflags & FD_CLOEXEC) == 0) | |
|
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diff
changeset
|
724 (void)fcntl(mfp->mf_fd, F_SETFD, fdflags | FD_CLOEXEC); |
| 2003 | 725 } |
| 726 #endif | |
| 7 | 727 } |
| 728 if (!success) | |
| 729 EMSG(_("E302: Could not rename swap file")); | |
| 730 } | |
| 731 | |
| 732 /* | |
| 733 * Open a file for the memfile for all buffers that are not readonly or have | |
| 734 * been modified. | |
| 735 * Used when 'updatecount' changes from zero to non-zero. | |
| 736 */ | |
| 737 void | |
|
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changeset
|
738 ml_open_files(void) |
| 7 | 739 { |
| 740 buf_T *buf; | |
| 741 | |
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changeset
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742 FOR_ALL_BUFFERS(buf) |
| 7 | 743 if (!buf->b_p_ro || buf->b_changed) |
| 744 ml_open_file(buf); | |
| 745 } | |
| 746 | |
| 747 /* | |
| 748 * Open a swap file for an existing memfile, if there is no swap file yet. | |
| 749 * If we are unable to find a file name, mf_fname will be NULL | |
| 750 * and the memfile will be in memory only (no recovery possible). | |
| 751 */ | |
| 752 void | |
|
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changeset
|
753 ml_open_file(buf_T *buf) |
| 7 | 754 { |
| 755 memfile_T *mfp; | |
| 756 char_u *fname; | |
| 757 char_u *dirp; | |
| 758 | |
| 759 mfp = buf->b_ml.ml_mfp; | |
| 5737 | 760 if (mfp == NULL || mfp->mf_fd >= 0 || !buf->b_p_swf || cmdmod.noswapfile) |
| 7 | 761 return; /* nothing to do */ |
| 762 | |
| 748 | 763 #ifdef FEAT_SPELL |
| 625 | 764 /* For a spell buffer use a temp file name. */ |
| 765 if (buf->b_spell) | |
| 766 { | |
| 6721 | 767 fname = vim_tempname('s', FALSE); |
| 625 | 768 if (fname != NULL) |
| 769 (void)mf_open_file(mfp, fname); /* consumes fname! */ | |
| 770 buf->b_may_swap = FALSE; | |
| 771 return; | |
| 772 } | |
| 773 #endif | |
| 774 | |
| 7 | 775 /* |
| 776 * Try all directories in 'directory' option. | |
| 777 */ | |
| 778 dirp = p_dir; | |
| 779 for (;;) | |
| 780 { | |
| 781 if (*dirp == NUL) | |
| 782 break; | |
|
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783 /* There is a small chance that between choosing the swap file name |
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784 * and creating it, another Vim creates the file. In that case the |
| 7 | 785 * creation will fail and we will use another directory. */ |
| 43 | 786 fname = findswapname(buf, &dirp, NULL); /* allocates fname */ |
| 3158 | 787 if (dirp == NULL) |
| 788 break; /* out of memory */ | |
| 7 | 789 if (fname == NULL) |
| 790 continue; | |
| 791 if (mf_open_file(mfp, fname) == OK) /* consumes fname! */ | |
| 792 { | |
|
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|
793 #if defined(MSWIN) |
| 7 | 794 /* |
| 795 * set full pathname for swap file now, because a ":!cd dir" may | |
| 796 * change directory without us knowing it. | |
| 797 */ | |
| 798 mf_fullname(mfp); | |
| 799 #endif | |
| 2267 | 800 ml_upd_block0(buf, UB_SAME_DIR); |
| 39 | 801 |
| 7 | 802 /* Flush block zero, so others can read it */ |
| 803 if (mf_sync(mfp, MFS_ZERO) == OK) | |
| 630 | 804 { |
| 805 /* Mark all blocks that should be in the swapfile as dirty. | |
| 806 * Needed for when the 'swapfile' option was reset, so that | |
| 807 * the swap file was deleted, and then on again. */ | |
| 808 mf_set_dirty(mfp); | |
| 7 | 809 break; |
| 630 | 810 } |
| 7 | 811 /* Writing block 0 failed: close the file and try another dir */ |
| 812 mf_close_file(buf, FALSE); | |
| 813 } | |
| 814 } | |
| 815 | |
| 816 if (mfp->mf_fname == NULL) /* Failed! */ | |
| 817 { | |
| 818 need_wait_return = TRUE; /* call wait_return later */ | |
| 819 ++no_wait_return; | |
| 820 (void)EMSG2(_("E303: Unable to open swap file for \"%s\", recovery impossible"), | |
| 3839 | 821 buf_spname(buf) != NULL ? buf_spname(buf) : buf->b_fname); |
| 7 | 822 --no_wait_return; |
| 823 } | |
| 824 | |
| 825 /* don't try to open a swap file again */ | |
| 826 buf->b_may_swap = FALSE; | |
| 827 } | |
| 828 | |
| 829 /* | |
| 830 * If still need to create a swap file, and starting to edit a not-readonly | |
| 831 * file, or reading into an existing buffer, create a swap file now. | |
| 832 */ | |
| 833 void | |
|
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834 check_need_swap( |
|
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835 int newfile) /* reading file into new buffer */ |
| 7 | 836 { |
| 837 if (curbuf->b_may_swap && (!curbuf->b_p_ro || !newfile)) | |
| 838 ml_open_file(curbuf); | |
| 839 } | |
| 840 | |
| 841 /* | |
| 842 * Close memline for buffer 'buf'. | |
| 843 * If 'del_file' is TRUE, delete the swap file | |
| 844 */ | |
| 845 void | |
|
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846 ml_close(buf_T *buf, int del_file) |
| 7 | 847 { |
| 848 if (buf->b_ml.ml_mfp == NULL) /* not open */ | |
| 849 return; | |
| 850 mf_close(buf->b_ml.ml_mfp, del_file); /* close the .swp file */ | |
| 851 if (buf->b_ml.ml_line_lnum != 0 && (buf->b_ml.ml_flags & ML_LINE_DIRTY)) | |
| 852 vim_free(buf->b_ml.ml_line_ptr); | |
| 853 vim_free(buf->b_ml.ml_stack); | |
| 854 #ifdef FEAT_BYTEOFF | |
| 855 vim_free(buf->b_ml.ml_chunksize); | |
| 856 buf->b_ml.ml_chunksize = NULL; | |
| 857 #endif | |
| 858 buf->b_ml.ml_mfp = NULL; | |
| 859 | |
| 860 /* Reset the "recovered" flag, give the ATTENTION prompt the next time | |
| 861 * this buffer is loaded. */ | |
| 862 buf->b_flags &= ~BF_RECOVERED; | |
| 863 } | |
| 864 | |
| 865 /* | |
| 866 * Close all existing memlines and memfiles. | |
| 867 * Only used when exiting. | |
| 868 * When 'del_file' is TRUE, delete the memfiles. | |
| 165 | 869 * But don't delete files that were ":preserve"d when we are POSIX compatible. |
| 7 | 870 */ |
| 871 void | |
|
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872 ml_close_all(int del_file) |
| 7 | 873 { |
| 874 buf_T *buf; | |
| 875 | |
|
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876 FOR_ALL_BUFFERS(buf) |
| 165 | 877 ml_close(buf, del_file && ((buf->b_flags & BF_PRESERVED) == 0 |
| 878 || vim_strchr(p_cpo, CPO_PRESERVE) == NULL)); | |
| 5519 | 879 #ifdef FEAT_SPELL |
| 880 spell_delete_wordlist(); /* delete the internal wordlist */ | |
| 881 #endif | |
| 7 | 882 #ifdef TEMPDIRNAMES |
| 5519 | 883 vim_deltempdir(); /* delete created temp directory */ |
| 7 | 884 #endif |
| 885 } | |
| 886 | |
| 887 /* | |
| 888 * Close all memfiles for not modified buffers. | |
| 889 * Only use just before exiting! | |
| 890 */ | |
| 891 void | |
|
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892 ml_close_notmod(void) |
| 7 | 893 { |
| 894 buf_T *buf; | |
| 895 | |
|
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896 FOR_ALL_BUFFERS(buf) |
| 7 | 897 if (!bufIsChanged(buf)) |
| 898 ml_close(buf, TRUE); /* close all not-modified buffers */ | |
| 899 } | |
| 900 | |
| 901 /* | |
| 902 * Update the timestamp in the .swp file. | |
| 903 * Used when the file has been written. | |
| 904 */ | |
| 905 void | |
|
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906 ml_timestamp(buf_T *buf) |
| 7 | 907 { |
| 2267 | 908 ml_upd_block0(buf, UB_FNAME); |
| 909 } | |
| 910 | |
| 911 /* | |
| 912 * Return FAIL when the ID of "b0p" is wrong. | |
| 913 */ | |
| 914 static int | |
|
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|
915 ml_check_b0_id(ZERO_BL *b0p) |
| 2267 | 916 { |
| 917 if (b0p->b0_id[0] != BLOCK0_ID0 | |
| 918 || (b0p->b0_id[1] != BLOCK0_ID1 | |
| 919 && b0p->b0_id[1] != BLOCK0_ID1_C0 | |
| 6122 | 920 && b0p->b0_id[1] != BLOCK0_ID1_C1 |
| 921 && b0p->b0_id[1] != BLOCK0_ID1_C2) | |
| 2267 | 922 ) |
| 923 return FAIL; | |
| 924 return OK; | |
| 39 | 925 } |
| 926 | |
| 927 /* | |
| 928 * Update the timestamp or the B0_SAME_DIR flag of the .swp file. | |
| 929 */ | |
| 930 static void | |
|
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931 ml_upd_block0(buf_T *buf, upd_block0_T what) |
| 39 | 932 { |
| 7 | 933 memfile_T *mfp; |
| 934 bhdr_T *hp; | |
| 935 ZERO_BL *b0p; | |
| 936 | |
| 937 mfp = buf->b_ml.ml_mfp; | |
| 6130 | 938 if (mfp == NULL) |
| 7 | 939 return; |
| 6130 | 940 hp = mf_get(mfp, (blocknr_T)0, 1); |
| 941 if (hp == NULL) | |
| 942 { | |
| 943 #ifdef FEAT_CRYPT | |
| 944 /* Possibly update the seed in the memfile before there is a block0. */ | |
| 945 if (what == UB_CRYPT) | |
| 946 ml_set_mfp_crypt(buf); | |
| 947 #endif | |
| 948 return; | |
| 949 } | |
| 950 | |
| 7 | 951 b0p = (ZERO_BL *)(hp->bh_data); |
| 2267 | 952 if (ml_check_b0_id(b0p) == FAIL) |
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953 IEMSG(_("E304: ml_upd_block0(): Didn't get block 0??")); |
| 7 | 954 else |
| 39 | 955 { |
| 2267 | 956 if (what == UB_FNAME) |
| 39 | 957 set_b0_fname(b0p, buf); |
| 2267 | 958 #ifdef FEAT_CRYPT |
| 959 else if (what == UB_CRYPT) | |
| 960 ml_set_b0_crypt(buf, b0p); | |
| 961 #endif | |
| 962 else /* what == UB_SAME_DIR */ | |
| 39 | 963 set_b0_dir_flag(b0p, buf); |
| 964 } | |
| 7 | 965 mf_put(mfp, hp, TRUE, FALSE); |
| 966 } | |
| 967 | |
| 968 /* | |
| 969 * Write file name and timestamp into block 0 of a swap file. | |
| 970 * Also set buf->b_mtime. | |
| 971 * Don't use NameBuff[]!!! | |
| 972 */ | |
| 973 static void | |
|
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974 set_b0_fname(ZERO_BL *b0p, buf_T *buf) |
| 7 | 975 { |
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976 stat_T st; |
| 7 | 977 |
| 978 if (buf->b_ffname == NULL) | |
| 979 b0p->b0_fname[0] = NUL; | |
| 980 else | |
| 981 { | |
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982 #if defined(MSWIN) || defined(AMIGA) |
| 39 | 983 /* Systems that cannot translate "~user" back into a path: copy the |
| 984 * file name unmodified. Do use slashes instead of backslashes for | |
| 985 * portability. */ | |
| 2267 | 986 vim_strncpy(b0p->b0_fname, buf->b_ffname, B0_FNAME_SIZE_CRYPT - 1); |
| 39 | 987 # ifdef BACKSLASH_IN_FILENAME |
| 988 forward_slash(b0p->b0_fname); | |
| 989 # endif | |
| 7 | 990 #else |
| 991 size_t flen, ulen; | |
| 992 char_u uname[B0_UNAME_SIZE]; | |
| 993 | |
| 994 /* | |
| 995 * For a file under the home directory of the current user, we try to | |
| 996 * replace the home directory path with "~user". This helps when | |
| 997 * editing the same file on different machines over a network. | |
| 998 * First replace home dir path with "~/" with home_replace(). | |
| 999 * Then insert the user name to get "~user/". | |
| 1000 */ | |
| 2267 | 1001 home_replace(NULL, buf->b_ffname, b0p->b0_fname, |
| 1002 B0_FNAME_SIZE_CRYPT, TRUE); | |
| 7 | 1003 if (b0p->b0_fname[0] == '~') |
| 1004 { | |
| 1005 flen = STRLEN(b0p->b0_fname); | |
| 1006 /* If there is no user name or it is too long, don't use "~/" */ | |
| 1007 if (get_user_name(uname, B0_UNAME_SIZE) == FAIL | |
| 2267 | 1008 || (ulen = STRLEN(uname)) + flen > B0_FNAME_SIZE_CRYPT - 1) |
| 1009 vim_strncpy(b0p->b0_fname, buf->b_ffname, | |
| 1010 B0_FNAME_SIZE_CRYPT - 1); | |
| 7 | 1011 else |
| 1012 { | |
| 1013 mch_memmove(b0p->b0_fname + ulen + 1, b0p->b0_fname + 1, flen); | |
| 1014 mch_memmove(b0p->b0_fname + 1, uname, ulen); | |
| 1015 } | |
| 1016 } | |
| 1017 #endif | |
| 1018 if (mch_stat((char *)buf->b_ffname, &st) >= 0) | |
| 1019 { | |
| 1020 long_to_char((long)st.st_mtime, b0p->b0_mtime); | |
| 1021 #ifdef CHECK_INODE | |
| 1022 long_to_char((long)st.st_ino, b0p->b0_ino); | |
| 1023 #endif | |
| 1024 buf_store_time(buf, &st, buf->b_ffname); | |
| 1025 buf->b_mtime_read = buf->b_mtime; | |
| 1026 } | |
| 1027 else | |
| 1028 { | |
| 1029 long_to_char(0L, b0p->b0_mtime); | |
| 1030 #ifdef CHECK_INODE | |
| 1031 long_to_char(0L, b0p->b0_ino); | |
| 1032 #endif | |
| 1033 buf->b_mtime = 0; | |
| 1034 buf->b_mtime_read = 0; | |
| 1035 buf->b_orig_size = 0; | |
| 1036 buf->b_orig_mode = 0; | |
| 1037 } | |
| 1038 } | |
| 39 | 1039 |
| 1040 #ifdef FEAT_MBYTE | |
| 1041 /* Also add the 'fileencoding' if there is room. */ | |
| 1042 add_b0_fenc(b0p, curbuf); | |
| 1043 #endif | |
| 7 | 1044 } |
| 1045 | |
| 1046 /* | |
| 39 | 1047 * Update the B0_SAME_DIR flag of the swap file. It's set if the file and the |
| 1048 * swapfile for "buf" are in the same directory. | |
| 1049 * This is fail safe: if we are not sure the directories are equal the flag is | |
| 1050 * not set. | |
| 1051 */ | |
| 1052 static void | |
|
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1053 set_b0_dir_flag(ZERO_BL *b0p, buf_T *buf) |
| 39 | 1054 { |
| 1055 if (same_directory(buf->b_ml.ml_mfp->mf_fname, buf->b_ffname)) | |
| 1056 b0p->b0_flags |= B0_SAME_DIR; | |
| 1057 else | |
| 1058 b0p->b0_flags &= ~B0_SAME_DIR; | |
| 1059 } | |
| 1060 | |
| 1061 #ifdef FEAT_MBYTE | |
| 1062 /* | |
| 1063 * When there is room, add the 'fileencoding' to block zero. | |
| 1064 */ | |
| 1065 static void | |
|
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1066 add_b0_fenc( |
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1067 ZERO_BL *b0p, |
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1068 buf_T *buf) |
| 39 | 1069 { |
| 1070 int n; | |
| 2267 | 1071 int size = B0_FNAME_SIZE_NOCRYPT; |
| 1072 | |
| 1073 # ifdef FEAT_CRYPT | |
| 1074 /* Without encryption use the same offset as in Vim 7.2 to be compatible. | |
| 1075 * With encryption it's OK to move elsewhere, the swap file is not | |
| 1076 * compatible anyway. */ | |
| 1077 if (*buf->b_p_key != NUL) | |
| 1078 size = B0_FNAME_SIZE_CRYPT; | |
| 1079 # endif | |
| 39 | 1080 |
| 835 | 1081 n = (int)STRLEN(buf->b_p_fenc); |
| 2267 | 1082 if ((int)STRLEN(b0p->b0_fname) + n + 1 > size) |
| 39 | 1083 b0p->b0_flags &= ~B0_HAS_FENC; |
| 1084 else | |
| 1085 { | |
| 2267 | 1086 mch_memmove((char *)b0p->b0_fname + size - n, |
| 39 | 1087 (char *)buf->b_p_fenc, (size_t)n); |
| 2267 | 1088 *(b0p->b0_fname + size - n - 1) = NUL; |
| 39 | 1089 b0p->b0_flags |= B0_HAS_FENC; |
| 1090 } | |
| 1091 } | |
| 1092 #endif | |
| 1093 | |
| 1094 | |
| 1095 /* | |
| 2267 | 1096 * Try to recover curbuf from the .swp file. |
| 7 | 1097 */ |
| 1098 void | |
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1099 ml_recover(void) |
| 7 | 1100 { |
| 1101 buf_T *buf = NULL; | |
| 1102 memfile_T *mfp = NULL; | |
| 1103 char_u *fname; | |
| 2267 | 1104 char_u *fname_used = NULL; |
| 7 | 1105 bhdr_T *hp = NULL; |
| 1106 ZERO_BL *b0p; | |
| 39 | 1107 int b0_ff; |
| 1108 char_u *b0_fenc = NULL; | |
| 2267 | 1109 #ifdef FEAT_CRYPT |
| 1110 int b0_cm = -1; | |
| 1111 #endif | |
| 7 | 1112 PTR_BL *pp; |
| 1113 DATA_BL *dp; | |
| 1114 infoptr_T *ip; | |
| 1115 blocknr_T bnum; | |
| 1116 int page_count; | |
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1117 stat_T org_stat, swp_stat; |
| 7 | 1118 int len; |
| 1119 int directly; | |
| 1120 linenr_T lnum; | |
| 1121 char_u *p; | |
| 1122 int i; | |
| 1123 long error; | |
| 1124 int cannot_open; | |
| 1125 linenr_T line_count; | |
| 1126 int has_error; | |
| 1127 int idx; | |
| 1128 int top; | |
| 1129 int txt_start; | |
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1130 off_T size; |
| 7 | 1131 int called_from_main; |
| 1132 int serious_error = TRUE; | |
| 1133 long mtime; | |
| 1134 int attr; | |
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1135 int orig_file_status = NOTDONE; |
| 7 | 1136 |
| 1137 recoverymode = TRUE; | |
| 1138 called_from_main = (curbuf->b_ml.ml_mfp == NULL); | |
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1139 attr = HL_ATTR(HLF_E); |
| 1975 | 1140 |
| 1141 /* | |
| 1142 * If the file name ends in ".s[uvw][a-z]" we assume this is the swap file. | |
| 1143 * Otherwise a search is done to find the swap file(s). | |
| 1144 */ | |
| 7 | 1145 fname = curbuf->b_fname; |
| 1146 if (fname == NULL) /* When there is no file name */ | |
| 1147 fname = (char_u *)""; | |
| 1148 len = (int)STRLEN(fname); | |
| 1149 if (len >= 4 && | |
| 2823 | 1150 #if defined(VMS) |
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1151 STRNICMP(fname + len - 4, "_s", 2) |
| 7 | 1152 #else |
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1153 STRNICMP(fname + len - 4, ".s", 2) |
| 7 | 1154 #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
|
1155 == 0 |
| 1975 | 1156 && vim_strchr((char_u *)"UVWuvw", fname[len - 2]) != NULL |
| 1157 && ASCII_ISALPHA(fname[len - 1])) | |
| 7 | 1158 { |
| 1159 directly = TRUE; | |
| 2267 | 1160 fname_used = vim_strsave(fname); /* make a copy for mf_open() */ |
| 7 | 1161 } |
| 1162 else | |
| 1163 { | |
| 1164 directly = FALSE; | |
| 1165 | |
| 1166 /* count the number of matching swap files */ | |
| 2267 | 1167 len = recover_names(fname, FALSE, 0, NULL); |
| 7 | 1168 if (len == 0) /* no swap files found */ |
| 1169 { | |
| 1170 EMSG2(_("E305: No swap file found for %s"), fname); | |
| 1171 goto theend; | |
| 1172 } | |
| 1173 if (len == 1) /* one swap file found, use it */ | |
| 1174 i = 1; | |
| 1175 else /* several swap files found, choose */ | |
| 1176 { | |
| 1177 /* list the names of the swap files */ | |
| 2267 | 1178 (void)recover_names(fname, TRUE, 0, NULL); |
| 7 | 1179 msg_putchar('\n'); |
| 1180 MSG_PUTS(_("Enter number of swap file to use (0 to quit): ")); | |
| 374 | 1181 i = get_number(FALSE, NULL); |
| 7 | 1182 if (i < 1 || i > len) |
| 1183 goto theend; | |
| 1184 } | |
| 1185 /* get the swap file name that will be used */ | |
| 2267 | 1186 (void)recover_names(fname, FALSE, i, &fname_used); |
| 7 | 1187 } |
| 2267 | 1188 if (fname_used == NULL) |
| 7 | 1189 goto theend; /* out of memory */ |
| 1190 | |
| 1191 /* When called from main() still need to initialize storage structure */ | |
| 625 | 1192 if (called_from_main && ml_open(curbuf) == FAIL) |
| 7 | 1193 getout(1); |
| 1194 | |
| 2267 | 1195 /* |
| 1196 * 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
|
1197 * Only the memline and crypt information in it are really used. |
| 2267 | 1198 */ |
| 7 | 1199 buf = (buf_T *)alloc((unsigned)sizeof(buf_T)); |
| 1200 if (buf == NULL) | |
| 1201 goto theend; | |
| 2267 | 1202 |
| 1203 /* | |
| 1204 * init fields in memline struct | |
| 1205 */ | |
| 7 | 1206 buf->b_ml.ml_stack_size = 0; /* no stack yet */ |
| 1207 buf->b_ml.ml_stack = NULL; /* no stack yet */ | |
| 1208 buf->b_ml.ml_stack_top = 0; /* nothing in the stack */ | |
| 1209 buf->b_ml.ml_line_lnum = 0; /* no cached line */ | |
| 1210 buf->b_ml.ml_locked = NULL; /* no locked block */ | |
| 1211 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
|
1212 #ifdef FEAT_CRYPT |
|
9e2e63af1641
Better fix for memory access in recovery. (Dominique Pelle)
Bram Moolenaar <bram@vim.org>
parents:
2407
diff
changeset
|
1213 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
|
1214 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
|
1215 #endif |
| 7 | 1216 |
| 2267 | 1217 /* |
| 1218 * open the memfile from the old swap file | |
| 1219 */ | |
| 1220 p = vim_strsave(fname_used); /* save "fname_used" for the message: | |
| 1221 mf_open() will consume "fname_used"! */ | |
| 1222 mfp = mf_open(fname_used, O_RDONLY); | |
| 1223 fname_used = p; | |
| 7 | 1224 if (mfp == NULL || mfp->mf_fd < 0) |
| 1225 { | |
| 2267 | 1226 if (fname_used != NULL) |
| 1227 EMSG2(_("E306: Cannot open %s"), fname_used); | |
| 7 | 1228 goto theend; |
| 1229 } | |
| 1230 buf->b_ml.ml_mfp = mfp; | |
| 2267 | 1231 #ifdef FEAT_CRYPT |
| 1232 mfp->mf_buffer = buf; | |
| 1233 #endif | |
| 7 | 1234 |
| 1235 /* | |
| 1236 * The page size set in mf_open() might be different from the page size | |
| 1237 * used in the swap file, we must get it from block 0. But to read block | |
| 1238 * 0 we need a page size. Use the minimal size for block 0 here, it will | |
| 1239 * be set to the real value below. | |
| 1240 */ | |
| 1241 mfp->mf_page_size = MIN_SWAP_PAGE_SIZE; | |
| 1242 | |
| 2267 | 1243 /* |
| 1244 * try to read block 0 | |
| 1245 */ | |
| 7 | 1246 if ((hp = mf_get(mfp, (blocknr_T)0, 1)) == NULL) |
| 1247 { | |
| 1248 msg_start(); | |
| 1249 MSG_PUTS_ATTR(_("Unable to read block 0 from "), attr | MSG_HIST); | |
| 1250 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST); | |
| 2267 | 1251 MSG_PUTS_ATTR(_("\nMaybe no changes were made or Vim did not update the swap file."), |
| 7 | 1252 attr | MSG_HIST); |
| 1253 msg_end(); | |
| 1254 goto theend; | |
| 1255 } | |
| 1256 b0p = (ZERO_BL *)(hp->bh_data); | |
| 1257 if (STRNCMP(b0p->b0_version, "VIM 3.0", 7) == 0) | |
| 1258 { | |
| 1259 msg_start(); | |
| 1260 msg_outtrans_attr(mfp->mf_fname, MSG_HIST); | |
| 1261 MSG_PUTS_ATTR(_(" cannot be used with this version of Vim.\n"), | |
| 1262 MSG_HIST); | |
| 1263 MSG_PUTS_ATTR(_("Use Vim version 3.0.\n"), MSG_HIST); | |
| 1264 msg_end(); | |
| 1265 goto theend; | |
| 1266 } | |
| 2267 | 1267 if (ml_check_b0_id(b0p) == FAIL) |
| 7 | 1268 { |
| 1269 EMSG2(_("E307: %s does not look like a Vim swap file"), mfp->mf_fname); | |
| 1270 goto theend; | |
| 1271 } | |
| 1272 if (b0_magic_wrong(b0p)) | |
| 1273 { | |
| 1274 msg_start(); | |
| 1275 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
|
1276 #if defined(MSWIN) |
| 7 | 1277 if (STRNCMP(b0p->b0_hname, "PC ", 3) == 0) |
| 1278 MSG_PUTS_ATTR(_(" cannot be used with this version of Vim.\n"), | |
| 1279 attr | MSG_HIST); | |
| 1280 else | |
| 1281 #endif | |
| 1282 MSG_PUTS_ATTR(_(" cannot be used on this computer.\n"), | |
| 1283 attr | MSG_HIST); | |
| 1284 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
|
1285 /* avoid going past the end of a corrupted hostname */ |
| 7 | 1286 b0p->b0_fname[0] = NUL; |
| 1287 MSG_PUTS_ATTR(b0p->b0_hname, attr | MSG_HIST); | |
| 1288 MSG_PUTS_ATTR(_(",\nor the file has been damaged."), attr | MSG_HIST); | |
| 1289 msg_end(); | |
| 1290 goto theend; | |
| 1291 } | |
| 1105 | 1292 |
| 2267 | 1293 #ifdef FEAT_CRYPT |
| 6122 | 1294 for (i = 0; i < (int)(sizeof(id1_codes) / sizeof(int)); ++i) |
| 1295 if (id1_codes[i] == b0p->b0_id[1]) | |
| 1296 b0_cm = i; | |
| 1297 if (b0_cm > 0) | |
| 2267 | 1298 mch_memmove(mfp->mf_seed, &b0p->b0_seed, MF_SEED_LEN); |
| 6122 | 1299 crypt_set_cm_option(buf, b0_cm < 0 ? 0 : b0_cm); |
| 2267 | 1300 #else |
| 1301 if (b0p->b0_id[1] != BLOCK0_ID1) | |
| 1302 { | |
|
2283
7e1bd501306d
Mainly documentation updates.
Bram Moolenaar <bram@vim.org>
parents:
2273
diff
changeset
|
1303 EMSG2(_("E833: %s is encrypted and this version of Vim does not support encryption"), mfp->mf_fname); |
| 2267 | 1304 goto theend; |
| 1305 } | |
| 1306 #endif | |
| 1307 | |
| 7 | 1308 /* |
| 1309 * If we guessed the wrong page size, we have to recalculate the | |
| 1310 * highest block number in the file. | |
| 1311 */ | |
| 1312 if (mfp->mf_page_size != (unsigned)char_to_long(b0p->b0_page_size)) | |
| 1313 { | |
| 1105 | 1314 unsigned previous_page_size = mfp->mf_page_size; |
| 1315 | |
| 7 | 1316 mf_new_page_size(mfp, (unsigned)char_to_long(b0p->b0_page_size)); |
| 1105 | 1317 if (mfp->mf_page_size < previous_page_size) |
| 1318 { | |
| 1319 msg_start(); | |
| 1320 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST); | |
| 1321 MSG_PUTS_ATTR(_(" has been damaged (page size is smaller than minimum value).\n"), | |
| 1322 attr | MSG_HIST); | |
| 1323 msg_end(); | |
| 1324 goto theend; | |
| 1325 } | |
|
9387
f094d4085014
commit https://github.com/vim/vim/commit/8767f52fbfd4f053ce00a978227c95f1d7d323fe
Christian Brabandt <cb@256bit.org>
parents:
9295
diff
changeset
|
1326 if ((size = vim_lseek(mfp->mf_fd, (off_T)0L, SEEK_END)) <= 0) |
| 7 | 1327 mfp->mf_blocknr_max = 0; /* no file or empty file */ |
| 1328 else | |
| 1329 mfp->mf_blocknr_max = (blocknr_T)(size / mfp->mf_page_size); | |
| 1330 mfp->mf_infile_count = mfp->mf_blocknr_max; | |
| 1105 | 1331 |
| 1332 /* need to reallocate the memory used to store the data */ | |
| 1333 p = alloc(mfp->mf_page_size); | |
| 1334 if (p == NULL) | |
| 1335 goto theend; | |
| 1336 mch_memmove(p, hp->bh_data, previous_page_size); | |
| 1337 vim_free(hp->bh_data); | |
| 1338 hp->bh_data = p; | |
| 1339 b0p = (ZERO_BL *)(hp->bh_data); | |
| 7 | 1340 } |
| 1341 | |
| 2267 | 1342 /* |
| 1343 * If .swp file name given directly, use name from swap file for buffer. | |
| 1344 */ | |
| 7 | 1345 if (directly) |
| 1346 { | |
| 1347 expand_env(b0p->b0_fname, NameBuff, MAXPATHL); | |
| 1348 if (setfname(curbuf, NameBuff, NULL, TRUE) == FAIL) | |
| 1349 goto theend; | |
| 1350 } | |
| 1351 | |
| 1352 home_replace(NULL, mfp->mf_fname, NameBuff, MAXPATHL, TRUE); | |
| 274 | 1353 smsg((char_u *)_("Using swap file \"%s\""), NameBuff); |
| 7 | 1354 |
| 1355 if (buf_spname(curbuf) != NULL) | |
| 3839 | 1356 vim_strncpy(NameBuff, buf_spname(curbuf), MAXPATHL - 1); |
| 7 | 1357 else |
| 1358 home_replace(NULL, curbuf->b_ffname, NameBuff, MAXPATHL, TRUE); | |
| 274 | 1359 smsg((char_u *)_("Original file \"%s\""), NameBuff); |
| 7 | 1360 msg_putchar('\n'); |
| 1361 | |
| 2267 | 1362 /* |
| 1363 * check date of swap file and original file | |
| 1364 */ | |
| 7 | 1365 mtime = char_to_long(b0p->b0_mtime); |
| 1366 if (curbuf->b_ffname != NULL | |
| 1367 && mch_stat((char *)curbuf->b_ffname, &org_stat) != -1 | |
| 1368 && ((mch_stat((char *)mfp->mf_fname, &swp_stat) != -1 | |
| 1369 && org_stat.st_mtime > swp_stat.st_mtime) | |
| 1370 || org_stat.st_mtime != mtime)) | |
| 1371 { | |
| 1372 EMSG(_("E308: Warning: Original file may have been changed")); | |
| 1373 } | |
| 1374 out_flush(); | |
| 39 | 1375 |
| 1376 /* Get the 'fileformat' and 'fileencoding' from block zero. */ | |
| 1377 b0_ff = (b0p->b0_flags & B0_FF_MASK); | |
| 1378 if (b0p->b0_flags & B0_HAS_FENC) | |
| 1379 { | |
|
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2267
diff
changeset
|
1380 int fnsize = B0_FNAME_SIZE_NOCRYPT; |
| 2267 | 1381 |
| 1382 #ifdef FEAT_CRYPT | |
| 1383 /* Use the same size as in add_b0_fenc(). */ | |
| 1384 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
|
1385 fnsize = B0_FNAME_SIZE_CRYPT; |
| 2267 | 1386 #endif |
|
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2267
diff
changeset
|
1387 for (p = b0p->b0_fname + fnsize; p > b0p->b0_fname && p[-1] != NUL; --p) |
| 39 | 1388 ; |
|
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2267
diff
changeset
|
1389 b0_fenc = vim_strnsave(p, (int)(b0p->b0_fname + fnsize - p)); |
| 39 | 1390 } |
| 1391 | |
| 7 | 1392 mf_put(mfp, hp, FALSE, FALSE); /* release block 0 */ |
| 1393 hp = NULL; | |
| 1394 | |
| 1395 /* | |
| 1396 * Now that we are sure that the file is going to be recovered, clear the | |
| 1397 * contents of the current buffer. | |
| 1398 */ | |
| 1399 while (!(curbuf->b_ml.ml_flags & ML_EMPTY)) | |
| 1400 ml_delete((linenr_T)1, FALSE); | |
| 1401 | |
| 1402 /* | |
| 1403 * Try reading the original file to obtain the values of 'fileformat', | |
| 1404 * 'fileencoding', etc. Ignore errors. The text itself is not used. | |
| 2267 | 1405 * When the file is encrypted the user is asked to enter the key. |
| 7 | 1406 */ |
| 1407 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
|
1408 orig_file_status = readfile(curbuf->b_ffname, NULL, (linenr_T)0, |
| 7 | 1409 (linenr_T)0, (linenr_T)MAXLNUM, NULL, READ_NEW); |
| 1410 | |
| 2267 | 1411 #ifdef FEAT_CRYPT |
| 1412 if (b0_cm >= 0) | |
| 1413 { | |
| 1414 /* Need to ask the user for the crypt key. If this fails we continue | |
| 1415 * without a key, will probably get garbage text. */ | |
| 1416 if (*curbuf->b_p_key != NUL) | |
| 1417 { | |
| 1418 smsg((char_u *)_("Swap file is encrypted: \"%s\""), fname_used); | |
| 1419 MSG_PUTS(_("\nIf you entered a new crypt key but did not write the text file,")); | |
| 1420 MSG_PUTS(_("\nenter the new crypt key.")); | |
| 1421 MSG_PUTS(_("\nIf you wrote the text file after changing the crypt key press enter")); | |
| 1422 MSG_PUTS(_("\nto use the same key for text file and swap file")); | |
| 1423 } | |
| 1424 else | |
| 1425 smsg((char_u *)_(need_key_msg), fname_used); | |
| 6122 | 1426 buf->b_p_key = crypt_get_key(FALSE, FALSE); |
| 2267 | 1427 if (buf->b_p_key == NULL) |
| 1428 buf->b_p_key = curbuf->b_p_key; | |
| 1429 else if (*buf->b_p_key == NUL) | |
| 1430 { | |
| 1431 vim_free(buf->b_p_key); | |
| 1432 buf->b_p_key = curbuf->b_p_key; | |
| 1433 } | |
| 1434 if (buf->b_p_key == NULL) | |
| 1435 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
|
1436 } |
| 2267 | 1437 #endif |
| 7 | 1438 |
| 39 | 1439 /* Use the 'fileformat' and 'fileencoding' as stored in the swap file. */ |
| 1440 if (b0_ff != 0) | |
| 1441 set_fileformat(b0_ff - 1, OPT_LOCAL); | |
| 1442 if (b0_fenc != NULL) | |
| 1443 { | |
| 1444 set_option_value((char_u *)"fenc", 0L, b0_fenc, OPT_LOCAL); | |
| 1445 vim_free(b0_fenc); | |
| 1446 } | |
| 1447 unchanged(curbuf, TRUE); | |
| 1448 | |
| 7 | 1449 bnum = 1; /* start with block 1 */ |
| 1450 page_count = 1; /* which is 1 page */ | |
| 1451 lnum = 0; /* append after line 0 in curbuf */ | |
| 1452 line_count = 0; | |
| 1453 idx = 0; /* start with first index in block 1 */ | |
| 1454 error = 0; | |
| 1455 buf->b_ml.ml_stack_top = 0; | |
| 1456 buf->b_ml.ml_stack = NULL; | |
| 1457 buf->b_ml.ml_stack_size = 0; /* no stack yet */ | |
| 1458 | |
| 1459 if (curbuf->b_ffname == NULL) | |
| 1460 cannot_open = TRUE; | |
| 1461 else | |
| 1462 cannot_open = FALSE; | |
| 1463 | |
| 1464 serious_error = FALSE; | |
| 1465 for ( ; !got_int; line_breakcheck()) | |
| 1466 { | |
| 1467 if (hp != NULL) | |
| 1468 mf_put(mfp, hp, FALSE, FALSE); /* release previous block */ | |
| 1469 | |
| 1470 /* | |
| 1471 * get block | |
| 1472 */ | |
| 1473 if ((hp = mf_get(mfp, (blocknr_T)bnum, page_count)) == NULL) | |
| 1474 { | |
| 1475 if (bnum == 1) | |
| 1476 { | |
| 1477 EMSG2(_("E309: Unable to read block 1 from %s"), mfp->mf_fname); | |
| 1478 goto theend; | |
| 1479 } | |
| 1480 ++error; | |
| 1481 ml_append(lnum++, (char_u *)_("???MANY LINES MISSING"), | |
| 1482 (colnr_T)0, TRUE); | |
| 1483 } | |
| 1484 else /* there is a block */ | |
| 1485 { | |
| 1486 pp = (PTR_BL *)(hp->bh_data); | |
| 1487 if (pp->pb_id == PTR_ID) /* it is a pointer block */ | |
| 1488 { | |
| 1489 /* check line count when using pointer block first time */ | |
| 1490 if (idx == 0 && line_count != 0) | |
| 1491 { | |
| 1492 for (i = 0; i < (int)pp->pb_count; ++i) | |
| 1493 line_count -= pp->pb_pointer[i].pe_line_count; | |
| 1494 if (line_count != 0) | |
| 1495 { | |
| 1496 ++error; | |
| 1497 ml_append(lnum++, (char_u *)_("???LINE COUNT WRONG"), | |
| 1498 (colnr_T)0, TRUE); | |
| 1499 } | |
| 1500 } | |
| 1501 | |
| 1502 if (pp->pb_count == 0) | |
| 1503 { | |
| 1504 ml_append(lnum++, (char_u *)_("???EMPTY BLOCK"), | |
| 1505 (colnr_T)0, TRUE); | |
| 1506 ++error; | |
| 1507 } | |
| 1508 else if (idx < (int)pp->pb_count) /* go a block deeper */ | |
| 1509 { | |
| 1510 if (pp->pb_pointer[idx].pe_bnum < 0) | |
| 1511 { | |
| 1512 /* | |
| 1513 * Data block with negative block number. | |
| 1514 * Try to read lines from the original file. | |
| 1515 * This is slow, but it works. | |
| 1516 */ | |
| 1517 if (!cannot_open) | |
| 1518 { | |
| 1519 line_count = pp->pb_pointer[idx].pe_line_count; | |
| 1520 if (readfile(curbuf->b_ffname, NULL, lnum, | |
| 1521 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
|
1522 line_count, NULL, 0) != OK) |
| 7 | 1523 cannot_open = TRUE; |
| 1524 else | |
| 1525 lnum += line_count; | |
| 1526 } | |
| 1527 if (cannot_open) | |
| 1528 { | |
| 1529 ++error; | |
| 1530 ml_append(lnum++, (char_u *)_("???LINES MISSING"), | |
| 1531 (colnr_T)0, TRUE); | |
| 1532 } | |
| 1533 ++idx; /* get same block again for next index */ | |
| 1534 continue; | |
| 1535 } | |
| 1536 | |
| 1537 /* | |
| 1538 * going one block deeper in the tree | |
| 1539 */ | |
| 1540 if ((top = ml_add_stack(buf)) < 0) /* new entry in stack */ | |
| 1541 { | |
| 1542 ++error; | |
| 1543 break; /* out of memory */ | |
| 1544 } | |
| 1545 ip = &(buf->b_ml.ml_stack[top]); | |
| 1546 ip->ip_bnum = bnum; | |
| 1547 ip->ip_index = idx; | |
| 1548 | |
| 1549 bnum = pp->pb_pointer[idx].pe_bnum; | |
| 1550 line_count = pp->pb_pointer[idx].pe_line_count; | |
| 1551 page_count = pp->pb_pointer[idx].pe_page_count; | |
| 2885 | 1552 idx = 0; |
| 7 | 1553 continue; |
| 1554 } | |
| 1555 } | |
| 1556 else /* not a pointer block */ | |
| 1557 { | |
| 1558 dp = (DATA_BL *)(hp->bh_data); | |
| 1559 if (dp->db_id != DATA_ID) /* block id wrong */ | |
| 1560 { | |
| 1561 if (bnum == 1) | |
| 1562 { | |
| 1563 EMSG2(_("E310: Block 1 ID wrong (%s not a .swp file?)"), | |
| 1564 mfp->mf_fname); | |
| 1565 goto theend; | |
| 1566 } | |
| 1567 ++error; | |
| 1568 ml_append(lnum++, (char_u *)_("???BLOCK MISSING"), | |
| 1569 (colnr_T)0, TRUE); | |
| 1570 } | |
| 1571 else | |
| 1572 { | |
| 1573 /* | |
| 1574 * it is a data block | |
| 1575 * Append all the lines in this block | |
| 1576 */ | |
| 1577 has_error = FALSE; | |
| 1578 /* | |
| 1579 * check length of block | |
| 1580 * if wrong, use length in pointer block | |
| 1581 */ | |
| 1582 if (page_count * mfp->mf_page_size != dp->db_txt_end) | |
| 1583 { | |
| 1584 ml_append(lnum++, (char_u *)_("??? from here until ???END lines may be messed up"), | |
| 1585 (colnr_T)0, TRUE); | |
| 1586 ++error; | |
| 1587 has_error = TRUE; | |
| 1588 dp->db_txt_end = page_count * mfp->mf_page_size; | |
| 1589 } | |
| 1590 | |
| 1591 /* make sure there is a NUL at the end of the block */ | |
| 1592 *((char_u *)dp + dp->db_txt_end - 1) = NUL; | |
| 1593 | |
| 1594 /* | |
| 1595 * check number of lines in block | |
| 1596 * if wrong, use count in data block | |
| 1597 */ | |
| 1598 if (line_count != dp->db_line_count) | |
| 1599 { | |
| 1600 ml_append(lnum++, (char_u *)_("??? from here until ???END lines may have been inserted/deleted"), | |
| 1601 (colnr_T)0, TRUE); | |
| 1602 ++error; | |
| 1603 has_error = TRUE; | |
| 1604 } | |
| 1605 | |
| 1606 for (i = 0; i < dp->db_line_count; ++i) | |
| 1607 { | |
| 1608 txt_start = (dp->db_index[i] & DB_INDEX_MASK); | |
| 1978 | 1609 if (txt_start <= (int)HEADER_SIZE |
| 7 | 1610 || txt_start >= (int)dp->db_txt_end) |
| 1611 { | |
| 1612 p = (char_u *)"???"; | |
| 1613 ++error; | |
| 1614 } | |
| 1615 else | |
| 1616 p = (char_u *)dp + txt_start; | |
| 1617 ml_append(lnum++, p, (colnr_T)0, TRUE); | |
| 1618 } | |
| 1619 if (has_error) | |
| 1978 | 1620 ml_append(lnum++, (char_u *)_("???END"), |
| 1621 (colnr_T)0, TRUE); | |
| 7 | 1622 } |
| 1623 } | |
| 1624 } | |
| 1625 | |
| 1626 if (buf->b_ml.ml_stack_top == 0) /* finished */ | |
| 1627 break; | |
| 1628 | |
| 1629 /* | |
| 1630 * go one block up in the tree | |
| 1631 */ | |
| 1632 ip = &(buf->b_ml.ml_stack[--(buf->b_ml.ml_stack_top)]); | |
| 1633 bnum = ip->ip_bnum; | |
| 1634 idx = ip->ip_index + 1; /* go to next index */ | |
| 1635 page_count = 1; | |
| 1636 } | |
| 1637 | |
| 1638 /* | |
|
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
|
1639 * 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
|
1640 * 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:
2145
diff
changeset
|
1641 * 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
|
1642 * 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
|
1643 * Line ml_line_count + 1 in the dummy empty line. |
| 7 | 1644 */ |
|
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
|
1645 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
|
1646 { |
|
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 /* 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
|
1648 * 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
|
1649 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
|
1650 { |
|
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
|
1651 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
|
1652 ++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
|
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 } |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1655 else |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1656 { |
|
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
|
1657 for (idx = 1; idx <= lnum; ++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
|
1658 { |
|
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 /* 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
Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
1660 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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diff
changeset
|
1661 i = STRCMP(p, ml_get(idx + lnum)); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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diff
changeset
|
1662 vim_free(p); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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diff
changeset
|
1663 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
|
1664 { |
|
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
|
1665 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
|
1666 ++CHANGEDTICK(curbuf); |
|
2162
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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diff
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|
1667 break; |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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diff
changeset
|
1668 } |
|
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
|
1669 } |
|
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
|
1670 } |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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diff
changeset
|
1671 |
|
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
|
1672 /* |
|
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
|
1673 * 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
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parents:
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diff
changeset
|
1674 * 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
|
1675 */ |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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parents:
2145
diff
changeset
|
1676 while (curbuf->b_ml.ml_line_count > lnum |
|
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
|
1677 && !(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:
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diff
changeset
|
1678 ml_delete(curbuf->b_ml.ml_line_count, FALSE); |
| 7 | 1679 curbuf->b_flags |= BF_RECOVERED; |
| 1680 | |
| 1681 recoverymode = FALSE; | |
| 1682 if (got_int) | |
| 1683 EMSG(_("E311: Recovery Interrupted")); | |
| 1684 else if (error) | |
| 1685 { | |
| 1686 ++no_wait_return; | |
| 1687 MSG(">>>>>>>>>>>>>"); | |
| 1688 EMSG(_("E312: Errors detected while recovering; look for lines starting with ???")); | |
| 1689 --no_wait_return; | |
| 1690 MSG(_("See \":help E312\" for more information.")); | |
| 1691 MSG(">>>>>>>>>>>>>"); | |
| 1692 } | |
| 1693 else | |
| 1694 { | |
|
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
|
1695 if (curbuf->b_changed) |
|
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 { |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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diff
changeset
|
1697 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
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diff
changeset
|
1698 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
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parents:
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diff
changeset
|
1699 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>
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diff
changeset
|
1700 } |
|
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
|
1701 else |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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diff
changeset
|
1702 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
|
1703 MSG_PUTS(_("\nYou may want to delete the .swp file now.\n\n")); |
| 7 | 1704 cmdline_row = msg_row; |
| 1705 } | |
| 2267 | 1706 #ifdef FEAT_CRYPT |
| 1707 if (*buf->b_p_key != NUL && STRCMP(curbuf->b_p_key, buf->b_p_key) != 0) | |
| 1708 { | |
| 1709 MSG_PUTS(_("Using crypt key from swap file for the text file.\n")); | |
| 1710 set_option_value((char_u *)"key", 0L, buf->b_p_key, OPT_LOCAL); | |
| 1711 } | |
| 1712 #endif | |
| 7 | 1713 redraw_curbuf_later(NOT_VALID); |
| 1714 | |
| 1715 theend: | |
| 2267 | 1716 vim_free(fname_used); |
| 7 | 1717 recoverymode = FALSE; |
| 1718 if (mfp != NULL) | |
| 1719 { | |
| 1720 if (hp != NULL) | |
| 1721 mf_put(mfp, hp, FALSE, FALSE); | |
| 1722 mf_close(mfp, FALSE); /* will also vim_free(mfp->mf_fname) */ | |
| 1723 } | |
| 1053 | 1724 if (buf != NULL) |
| 1725 { | |
| 2267 | 1726 #ifdef FEAT_CRYPT |
| 1727 if (buf->b_p_key != curbuf->b_p_key) | |
| 1728 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
|
1729 free_string_option(buf->b_p_cm); |
| 2267 | 1730 #endif |
| 1053 | 1731 vim_free(buf->b_ml.ml_stack); |
| 1732 vim_free(buf); | |
| 1733 } | |
| 7 | 1734 if (serious_error && called_from_main) |
| 1735 ml_close(curbuf, TRUE); | |
| 1736 #ifdef FEAT_AUTOCMD | |
| 1737 else | |
| 1738 { | |
| 1739 apply_autocmds(EVENT_BUFREADPOST, NULL, curbuf->b_fname, FALSE, curbuf); | |
| 1740 apply_autocmds(EVENT_BUFWINENTER, NULL, curbuf->b_fname, FALSE, curbuf); | |
| 1741 } | |
| 1742 #endif | |
| 1743 return; | |
| 1744 } | |
| 1745 | |
| 1746 /* | |
| 1747 * Find the names of swap files in current directory and the directory given | |
| 1748 * with the 'directory' option. | |
| 1749 * | |
| 1750 * Used to: | |
| 1751 * - list the swap files for "vim -r" | |
| 1752 * - count the number of swap files when recovering | |
| 1753 * - list the swap files when recovering | |
| 1754 * - find the name of the n'th swap file when recovering | |
| 1755 */ | |
| 1756 int | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
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7803
diff
changeset
|
1757 recover_names( |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
1758 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
|
1759 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
|
1760 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>
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7803
diff
changeset
|
1761 char_u **fname_out) /* result when "nr" > 0 */ |
| 7 | 1762 { |
| 1763 int num_names; | |
| 1764 char_u *(names[6]); | |
| 1765 char_u *tail; | |
| 1766 char_u *p; | |
| 1767 int num_files; | |
| 1768 int file_count = 0; | |
| 1769 char_u **files; | |
| 1770 int i; | |
| 1771 char_u *dirp; | |
| 1772 char_u *dir_name; | |
| 2175 | 1773 char_u *fname_res = NULL; |
|
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|
1774 #ifdef HAVE_READLINK |
|
de0e7ca61893
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diff
changeset
|
1775 char_u fname_buf[MAXPATHL]; |
| 2175 | 1776 #endif |
| 1777 | |
| 1778 if (fname != NULL) | |
| 1779 { | |
| 1780 #ifdef HAVE_READLINK | |
| 2267 | 1781 /* Expand symlink in the file name, because the swap file is created |
| 1782 * with the actual file instead of with the symlink. */ | |
| 1783 if (resolve_symlink(fname, fname_buf) == OK) | |
| 1784 fname_res = fname_buf; | |
| 1785 else | |
|
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diff
changeset
|
1786 #endif |
| 2267 | 1787 fname_res = fname; |
| 2175 | 1788 } |
| 7 | 1789 |
| 1790 if (list) | |
| 1791 { | |
|
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diff
changeset
|
1792 /* use msg() to start the scrolling properly */ |
| 7 | 1793 msg((char_u *)_("Swap files found:")); |
| 1794 msg_putchar('\n'); | |
| 1795 } | |
| 1796 | |
| 1797 /* | |
| 1798 * Do the loop for every directory in 'directory'. | |
| 1799 * First allocate some memory to put the directory name in. | |
| 1800 */ | |
| 1801 dir_name = alloc((unsigned)STRLEN(p_dir) + 1); | |
| 1802 dirp = p_dir; | |
| 1803 while (dir_name != NULL && *dirp) | |
| 1804 { | |
| 1805 /* | |
| 1806 * Isolate a directory name from *dirp and put it in dir_name (we know | |
| 1807 * it is large enough, so use 31000 for length). | |
| 1808 * Advance dirp to next directory name. | |
| 1809 */ | |
| 1810 (void)copy_option_part(&dirp, dir_name, 31000, ","); | |
| 1811 | |
| 1812 if (dir_name[0] == '.' && dir_name[1] == NUL) /* check current dir */ | |
| 1813 { | |
| 2267 | 1814 if (fname == NULL) |
| 7 | 1815 { |
| 1816 #ifdef VMS | |
| 1817 names[0] = vim_strsave((char_u *)"*_sw%"); | |
| 1818 #else | |
| 1819 names[0] = vim_strsave((char_u *)"*.sw?"); | |
| 1820 #endif | |
| 1005 | 1821 #if defined(UNIX) || defined(WIN3264) |
| 1822 /* For Unix names starting with a dot are special. MS-Windows | |
| 1823 * supports this too, on some file systems. */ | |
| 7 | 1824 names[1] = vim_strsave((char_u *)".*.sw?"); |
| 1825 names[2] = vim_strsave((char_u *)".sw?"); | |
| 1826 num_names = 3; | |
| 1827 #else | |
| 1828 # ifdef VMS | |
| 1829 names[1] = vim_strsave((char_u *)".*_sw%"); | |
| 1830 num_names = 2; | |
| 1831 # else | |
| 1832 num_names = 1; | |
| 1833 # endif | |
| 1834 #endif | |
| 1835 } | |
| 1836 else | |
|
2145
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2108
diff
changeset
|
1837 num_names = recov_file_names(names, fname_res, TRUE); |
| 7 | 1838 } |
| 1839 else /* check directory dir_name */ | |
| 1840 { | |
| 2267 | 1841 if (fname == NULL) |
| 7 | 1842 { |
| 1843 #ifdef VMS | |
| 1844 names[0] = concat_fnames(dir_name, (char_u *)"*_sw%", TRUE); | |
| 1845 #else | |
| 1846 names[0] = concat_fnames(dir_name, (char_u *)"*.sw?", TRUE); | |
| 1847 #endif | |
| 1005 | 1848 #if defined(UNIX) || defined(WIN3264) |
| 1849 /* For Unix names starting with a dot are special. MS-Windows | |
| 1850 * supports this too, on some file systems. */ | |
| 7 | 1851 names[1] = concat_fnames(dir_name, (char_u *)".*.sw?", TRUE); |
| 1852 names[2] = concat_fnames(dir_name, (char_u *)".sw?", TRUE); | |
| 1853 num_names = 3; | |
| 1854 #else | |
| 1855 # ifdef VMS | |
| 1856 names[1] = concat_fnames(dir_name, (char_u *)".*_sw%", TRUE); | |
| 1857 num_names = 2; | |
| 1858 # else | |
| 1859 num_names = 1; | |
| 1860 # endif | |
| 1861 #endif | |
| 1862 } | |
| 1863 else | |
| 1864 { | |
| 1865 #if defined(UNIX) || defined(WIN3264) | |
|
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1866 int len = (int)STRLEN(dir_name); |
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1867 |
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1868 p = dir_name + len; |
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1869 if (after_pathsep(dir_name, p) && len > 1 && p[-1] == p[-2]) |
| 7 | 1870 { |
| 1871 /* Ends with '//', Use Full path for swap name */ | |
|
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1872 tail = make_percent_swname(dir_name, fname_res); |
| 7 | 1873 } |
| 1874 else | |
| 1875 #endif | |
| 1876 { | |
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1877 tail = gettail(fname_res); |
| 7 | 1878 tail = concat_fnames(dir_name, tail, TRUE); |
| 1879 } | |
| 1880 if (tail == NULL) | |
| 1881 num_names = 0; | |
| 1882 else | |
| 1883 { | |
| 1884 num_names = recov_file_names(names, tail, FALSE); | |
| 1885 vim_free(tail); | |
| 1886 } | |
| 1887 } | |
| 1888 } | |
| 1889 | |
| 1890 /* check for out-of-memory */ | |
| 1891 for (i = 0; i < num_names; ++i) | |
| 1892 { | |
| 1893 if (names[i] == NULL) | |
| 1894 { | |
| 1895 for (i = 0; i < num_names; ++i) | |
| 1896 vim_free(names[i]); | |
| 1897 num_names = 0; | |
| 1898 } | |
| 1899 } | |
| 1900 if (num_names == 0) | |
| 1901 num_files = 0; | |
| 1902 else if (expand_wildcards(num_names, names, &num_files, &files, | |
| 1903 EW_KEEPALL|EW_FILE|EW_SILENT) == FAIL) | |
| 1904 num_files = 0; | |
| 1905 | |
| 1906 /* | |
| 1907 * When no swap file found, wildcard expansion might have failed (e.g. | |
| 1908 * not able to execute the shell). | |
| 1909 * Try finding a swap file by simply adding ".swp" to the file name. | |
| 1910 */ | |
| 2267 | 1911 if (*dirp == NUL && file_count + num_files == 0 && fname != NULL) |
| 7 | 1912 { |
|
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1913 stat_T st; |
| 7 | 1914 char_u *swapname; |
| 1915 | |
|
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1916 swapname = modname(fname_res, |
| 2823 | 1917 #if defined(VMS) |
|
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1918 (char_u *)"_swp", FALSE |
| 7 | 1919 #else |
|
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1920 (char_u *)".swp", TRUE |
| 7 | 1921 #endif |
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1922 ); |
| 7 | 1923 if (swapname != NULL) |
| 1924 { | |
| 1925 if (mch_stat((char *)swapname, &st) != -1) /* It exists! */ | |
| 1926 { | |
| 1927 files = (char_u **)alloc((unsigned)sizeof(char_u *)); | |
| 1928 if (files != NULL) | |
| 1929 { | |
| 1930 files[0] = swapname; | |
| 1931 swapname = NULL; | |
| 1932 num_files = 1; | |
| 1933 } | |
| 1934 } | |
| 1935 vim_free(swapname); | |
| 1936 } | |
| 1937 } | |
| 1938 | |
| 1939 /* | |
| 1940 * remove swapfile name of the current buffer, it must be ignored | |
| 1941 */ | |
| 1942 if (curbuf->b_ml.ml_mfp != NULL | |
| 1943 && (p = curbuf->b_ml.ml_mfp->mf_fname) != NULL) | |
| 1944 { | |
| 1945 for (i = 0; i < num_files; ++i) | |
| 1946 if (fullpathcmp(p, files[i], TRUE) & FPC_SAME) | |
| 1947 { | |
| 1855 | 1948 /* Remove the name from files[i]. Move further entries |
| 1949 * down. When the array becomes empty free it here, since | |
| 1950 * FreeWild() won't be called below. */ | |
| 7 | 1951 vim_free(files[i]); |
| 1855 | 1952 if (--num_files == 0) |
| 1953 vim_free(files); | |
| 1954 else | |
| 1955 for ( ; i < num_files; ++i) | |
| 1956 files[i] = files[i + 1]; | |
| 7 | 1957 } |
| 1958 } | |
| 838 | 1959 if (nr > 0) |
| 7 | 1960 { |
| 1961 file_count += num_files; | |
| 1962 if (nr <= file_count) | |
| 1963 { | |
| 2267 | 1964 *fname_out = vim_strsave( |
| 1965 files[nr - 1 + num_files - file_count]); | |
| 7 | 1966 dirp = (char_u *)""; /* stop searching */ |
| 1967 } | |
| 1968 } | |
| 1969 else if (list) | |
| 1970 { | |
| 1971 if (dir_name[0] == '.' && dir_name[1] == NUL) | |
| 1972 { | |
| 2267 | 1973 if (fname == NULL) |
| 7 | 1974 MSG_PUTS(_(" In current directory:\n")); |
| 1975 else | |
| 1976 MSG_PUTS(_(" Using specified name:\n")); | |
| 1977 } | |
| 1978 else | |
| 1979 { | |
| 1980 MSG_PUTS(_(" In directory ")); | |
| 1981 msg_home_replace(dir_name); | |
| 1982 MSG_PUTS(":\n"); | |
| 1983 } | |
| 1984 | |
| 1985 if (num_files) | |
| 1986 { | |
| 1987 for (i = 0; i < num_files; ++i) | |
| 1988 { | |
| 1989 /* print the swap file name */ | |
| 1990 msg_outnum((long)++file_count); | |
| 1991 MSG_PUTS(". "); | |
| 1992 msg_puts(gettail(files[i])); | |
| 1993 msg_putchar('\n'); | |
| 1994 (void)swapfile_info(files[i]); | |
| 1995 } | |
| 1996 } | |
| 1997 else | |
| 1998 MSG_PUTS(_(" -- none --\n")); | |
| 1999 out_flush(); | |
| 2000 } | |
| 2001 else | |
| 2002 file_count += num_files; | |
| 2003 | |
| 2004 for (i = 0; i < num_names; ++i) | |
| 2005 vim_free(names[i]); | |
| 838 | 2006 if (num_files > 0) |
| 2007 FreeWild(num_files, files); | |
| 7 | 2008 } |
| 2009 vim_free(dir_name); | |
| 2010 return file_count; | |
| 2011 } | |
| 2012 | |
| 2013 #if defined(UNIX) || defined(WIN3264) /* Need _very_ long file names */ | |
| 2014 /* | |
| 2015 * Append the full path to name with path separators made into percent | |
| 2016 * signs, to dir. An unnamed buffer is handled as "" (<currentdir>/"") | |
| 2017 */ | |
| 2018 static char_u * | |
|
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2019 make_percent_swname(char_u *dir, char_u *name) |
| 7 | 2020 { |
| 39 | 2021 char_u *d, *s, *f; |
| 7 | 2022 |
| 2023 f = fix_fname(name != NULL ? name : (char_u *) ""); | |
| 2024 d = NULL; | |
| 2025 if (f != NULL) | |
| 2026 { | |
| 2027 s = alloc((unsigned)(STRLEN(f) + 1)); | |
| 2028 if (s != NULL) | |
| 2029 { | |
| 39 | 2030 STRCPY(s, f); |
|
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2031 for (d = s; *d != NUL; MB_PTR_ADV(d)) |
| 39 | 2032 if (vim_ispathsep(*d)) |
| 2033 *d = '%'; | |
| 7 | 2034 d = concat_fnames(dir, s, TRUE); |
| 2035 vim_free(s); | |
| 2036 } | |
| 2037 vim_free(f); | |
| 2038 } | |
| 2039 return d; | |
| 2040 } | |
| 2041 #endif | |
| 2042 | |
|
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changeset
|
2043 #if (defined(UNIX) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)) |
| 7 | 2044 static int process_still_running; |
| 2045 #endif | |
| 2046 | |
| 2047 /* | |
| 580 | 2048 * Give information about an existing swap file. |
| 7 | 2049 * Returns timestamp (0 when unknown). |
| 2050 */ | |
| 2051 static time_t | |
|
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diff
changeset
|
2052 swapfile_info(char_u *fname) |
| 7 | 2053 { |
|
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9295
diff
changeset
|
2054 stat_T st; |
| 7 | 2055 int fd; |
| 2056 struct block0 b0; | |
| 2057 time_t x = (time_t)0; | |
| 1001 | 2058 char *p; |
| 7 | 2059 #ifdef UNIX |
| 2060 char_u uname[B0_UNAME_SIZE]; | |
| 2061 #endif | |
| 2062 | |
| 2063 /* print the swap file date */ | |
| 2064 if (mch_stat((char *)fname, &st) != -1) | |
| 2065 { | |
| 2066 #ifdef UNIX | |
| 2067 /* print name of owner of the file */ | |
| 2068 if (mch_get_uname(st.st_uid, uname, B0_UNAME_SIZE) == OK) | |
| 2069 { | |
| 2070 MSG_PUTS(_(" owned by: ")); | |
| 2071 msg_outtrans(uname); | |
| 2072 MSG_PUTS(_(" dated: ")); | |
| 2073 } | |
| 2074 else | |
| 2075 #endif | |
| 2076 MSG_PUTS(_(" dated: ")); | |
| 2077 x = st.st_mtime; /* Manx C can't do &st.st_mtime */ | |
| 1001 | 2078 p = ctime(&x); /* includes '\n' */ |
| 2079 if (p == NULL) | |
| 2080 MSG_PUTS("(invalid)\n"); | |
| 2081 else | |
| 2082 MSG_PUTS(p); | |
| 7 | 2083 } |
| 2084 | |
| 2085 /* | |
| 2086 * print the original file name | |
| 2087 */ | |
| 2088 fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
| 2089 if (fd >= 0) | |
| 2090 { | |
| 2664 | 2091 if (read_eintr(fd, &b0, sizeof(b0)) == sizeof(b0)) |
| 7 | 2092 { |
| 2093 if (STRNCMP(b0.b0_version, "VIM 3.0", 7) == 0) | |
| 2094 { | |
| 2095 MSG_PUTS(_(" [from Vim version 3.0]")); | |
| 2096 } | |
| 2267 | 2097 else if (ml_check_b0_id(&b0) == FAIL) |
| 7 | 2098 { |
| 2099 MSG_PUTS(_(" [does not look like a Vim swap file]")); | |
| 2100 } | |
| 2101 else | |
| 2102 { | |
| 2103 MSG_PUTS(_(" file name: ")); | |
| 2104 if (b0.b0_fname[0] == NUL) | |
| 9 | 2105 MSG_PUTS(_("[No Name]")); |
| 7 | 2106 else |
| 2107 msg_outtrans(b0.b0_fname); | |
| 2108 | |
| 2109 MSG_PUTS(_("\n modified: ")); | |
| 2110 MSG_PUTS(b0.b0_dirty ? _("YES") : _("no")); | |
| 2111 | |
| 2112 if (*(b0.b0_uname) != NUL) | |
| 2113 { | |
| 2114 MSG_PUTS(_("\n user name: ")); | |
| 2115 msg_outtrans(b0.b0_uname); | |
| 2116 } | |
| 2117 | |
| 2118 if (*(b0.b0_hname) != NUL) | |
| 2119 { | |
| 2120 if (*(b0.b0_uname) != NUL) | |
| 2121 MSG_PUTS(_(" host name: ")); | |
| 2122 else | |
| 2123 MSG_PUTS(_("\n host name: ")); | |
| 2124 msg_outtrans(b0.b0_hname); | |
| 2125 } | |
| 2126 | |
| 2127 if (char_to_long(b0.b0_pid) != 0L) | |
| 2128 { | |
| 2129 MSG_PUTS(_("\n process ID: ")); | |
| 2130 msg_outnum(char_to_long(b0.b0_pid)); | |
|
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|
2131 #if defined(UNIX) |
| 7 | 2132 /* EMX kill() not working correctly, it seems */ |
| 2133 if (kill((pid_t)char_to_long(b0.b0_pid), 0) == 0) | |
| 2134 { | |
| 2135 MSG_PUTS(_(" (still running)")); | |
| 2136 # if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) | |
| 2137 process_still_running = TRUE; | |
| 2138 # endif | |
| 2139 } | |
| 2140 #endif | |
| 2141 } | |
| 2142 | |
| 2143 if (b0_magic_wrong(&b0)) | |
| 2144 { | |
|
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diff
changeset
|
2145 #if defined(MSWIN) |
| 7 | 2146 if (STRNCMP(b0.b0_hname, "PC ", 3) == 0) |
| 2147 MSG_PUTS(_("\n [not usable with this version of Vim]")); | |
| 2148 else | |
| 2149 #endif | |
| 2150 MSG_PUTS(_("\n [not usable on this computer]")); | |
| 2151 } | |
| 2152 } | |
| 2153 } | |
| 2154 else | |
| 2155 MSG_PUTS(_(" [cannot be read]")); | |
| 2156 close(fd); | |
| 2157 } | |
| 2158 else | |
| 2159 MSG_PUTS(_(" [cannot be opened]")); | |
| 2160 msg_putchar('\n'); | |
| 2161 | |
| 2162 return x; | |
| 2163 } | |
| 2164 | |
| 2165 static int | |
|
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diff
changeset
|
2166 recov_file_names(char_u **names, char_u *path, int prepend_dot) |
| 7 | 2167 { |
| 2168 int num_names; | |
| 2169 | |
| 2170 /* | |
| 2171 * (Win32 and Win64) never short names, but do prepend a dot. | |
| 2172 * (Not MS-DOS or Win32 or Win64) maybe short name, maybe not: Try both. | |
| 2173 * Only use the short name if it is different. | |
| 2174 */ | |
| 2175 char_u *p; | |
| 2176 int i; | |
| 2177 # ifndef WIN3264 | |
| 2178 int shortname = curbuf->b_shortname; | |
| 2179 | |
| 2180 curbuf->b_shortname = FALSE; | |
| 2181 # endif | |
| 2182 | |
| 2183 num_names = 0; | |
| 2184 | |
| 2185 /* | |
| 2186 * May also add the file name with a dot prepended, for swap file in same | |
| 2187 * dir as original file. | |
| 2188 */ | |
| 2189 if (prepend_dot) | |
| 2190 { | |
| 2191 names[num_names] = modname(path, (char_u *)".sw?", TRUE); | |
| 2192 if (names[num_names] == NULL) | |
| 2193 goto end; | |
| 2194 ++num_names; | |
| 2195 } | |
| 2196 | |
| 2197 /* | |
| 2198 * Form the normal swap file name pattern by appending ".sw?". | |
| 2199 */ | |
| 2200 #ifdef VMS | |
| 2201 names[num_names] = concat_fnames(path, (char_u *)"_sw%", FALSE); | |
| 2202 #else | |
| 2203 names[num_names] = concat_fnames(path, (char_u *)".sw?", FALSE); | |
| 2204 #endif | |
| 2205 if (names[num_names] == NULL) | |
| 2206 goto end; | |
| 2207 if (num_names >= 1) /* check if we have the same name twice */ | |
| 2208 { | |
| 2209 p = names[num_names - 1]; | |
| 2210 i = (int)STRLEN(names[num_names - 1]) - (int)STRLEN(names[num_names]); | |
| 2211 if (i > 0) | |
| 2212 p += i; /* file name has been expanded to full path */ | |
| 2213 | |
| 2214 if (STRCMP(p, names[num_names]) != 0) | |
| 2215 ++num_names; | |
| 2216 else | |
| 2217 vim_free(names[num_names]); | |
| 2218 } | |
| 2219 else | |
| 2220 ++num_names; | |
| 2221 | |
| 2222 # ifndef WIN3264 | |
| 2223 /* | |
| 2224 * Also try with 'shortname' set, in case the file is on a DOS filesystem. | |
| 2225 */ | |
| 2226 curbuf->b_shortname = TRUE; | |
| 2227 #ifdef VMS | |
| 2228 names[num_names] = modname(path, (char_u *)"_sw%", FALSE); | |
| 2229 #else | |
| 2230 names[num_names] = modname(path, (char_u *)".sw?", FALSE); | |
| 2231 #endif | |
| 2232 if (names[num_names] == NULL) | |
| 2233 goto end; | |
| 2234 | |
| 2235 /* | |
| 2236 * Remove the one from 'shortname', if it's the same as with 'noshortname'. | |
| 2237 */ | |
| 2238 p = names[num_names]; | |
| 2239 i = STRLEN(names[num_names]) - STRLEN(names[num_names - 1]); | |
| 2240 if (i > 0) | |
| 2241 p += i; /* file name has been expanded to full path */ | |
| 2242 if (STRCMP(names[num_names - 1], p) == 0) | |
| 2243 vim_free(names[num_names]); | |
| 2244 else | |
| 2245 ++num_names; | |
| 2246 # endif | |
| 2247 | |
| 2248 end: | |
| 2249 # ifndef WIN3264 | |
| 2250 curbuf->b_shortname = shortname; | |
| 2251 # endif | |
| 2252 | |
| 2253 return num_names; | |
| 2254 } | |
| 2255 | |
| 2256 /* | |
| 2257 * sync all memlines | |
| 2258 * | |
| 2259 * If 'check_file' is TRUE, check if original file exists and was not changed. | |
| 2260 * If 'check_char' is TRUE, stop syncing when character becomes available, but | |
| 2261 * always sync at least one block. | |
| 2262 */ | |
| 2263 void | |
|
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diff
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|
2264 ml_sync_all(int check_file, int check_char) |
| 7 | 2265 { |
| 2266 buf_T *buf; | |
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2267 stat_T st; |
| 7 | 2268 |
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|
2269 FOR_ALL_BUFFERS(buf) |
| 7 | 2270 { |
| 2271 if (buf->b_ml.ml_mfp == NULL || buf->b_ml.ml_mfp->mf_fname == NULL) | |
| 2272 continue; /* no file */ | |
| 2273 | |
| 2274 ml_flush_line(buf); /* flush buffered line */ | |
| 2275 /* flush locked block */ | |
| 2276 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); | |
| 2277 if (bufIsChanged(buf) && check_file && mf_need_trans(buf->b_ml.ml_mfp) | |
| 2278 && buf->b_ffname != NULL) | |
| 2279 { | |
| 2280 /* | |
| 2281 * If the original file does not exist anymore or has been changed | |
| 2282 * call ml_preserve() to get rid of all negative numbered blocks. | |
| 2283 */ | |
| 2284 if (mch_stat((char *)buf->b_ffname, &st) == -1 | |
| 2285 || st.st_mtime != buf->b_mtime_read | |
|
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2286 || st.st_size != buf->b_orig_size) |
| 7 | 2287 { |
| 2288 ml_preserve(buf, FALSE); | |
| 2289 did_check_timestamps = FALSE; | |
| 2290 need_check_timestamps = TRUE; /* give message later */ | |
| 2291 } | |
| 2292 } | |
| 2293 if (buf->b_ml.ml_mfp->mf_dirty) | |
| 2294 { | |
| 2295 (void)mf_sync(buf->b_ml.ml_mfp, (check_char ? MFS_STOP : 0) | |
| 2296 | (bufIsChanged(buf) ? MFS_FLUSH : 0)); | |
| 2297 if (check_char && ui_char_avail()) /* character available now */ | |
| 2298 break; | |
| 2299 } | |
| 2300 } | |
| 2301 } | |
| 2302 | |
| 2303 /* | |
| 2304 * sync one buffer, including negative blocks | |
| 2305 * | |
| 2306 * after this all the blocks are in the swap file | |
| 2307 * | |
| 2308 * Used for the :preserve command and when the original file has been | |
| 2309 * changed or deleted. | |
| 2310 * | |
| 2311 * when message is TRUE the success of preserving is reported | |
| 2312 */ | |
| 2313 void | |
|
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|
2314 ml_preserve(buf_T *buf, int message) |
| 7 | 2315 { |
| 2316 bhdr_T *hp; | |
| 2317 linenr_T lnum; | |
| 2318 memfile_T *mfp = buf->b_ml.ml_mfp; | |
| 2319 int status; | |
| 2320 int got_int_save = got_int; | |
| 2321 | |
| 2322 if (mfp == NULL || mfp->mf_fname == NULL) | |
| 2323 { | |
| 2324 if (message) | |
| 2325 EMSG(_("E313: Cannot preserve, there is no swap file")); | |
| 2326 return; | |
| 2327 } | |
| 2328 | |
| 2329 /* We only want to stop when interrupted here, not when interrupted | |
| 2330 * before. */ | |
| 2331 got_int = FALSE; | |
| 2332 | |
| 2333 ml_flush_line(buf); /* flush buffered line */ | |
| 2334 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
| 2335 status = mf_sync(mfp, MFS_ALL | MFS_FLUSH); | |
| 2336 | |
| 2337 /* stack is invalid after mf_sync(.., MFS_ALL) */ | |
| 2338 buf->b_ml.ml_stack_top = 0; | |
| 2339 | |
| 2340 /* | |
| 2341 * Some of the data blocks may have been changed from negative to | |
| 2342 * positive block number. In that case the pointer blocks need to be | |
| 2343 * updated. | |
| 2344 * | |
| 2345 * We don't know in which pointer block the references are, so we visit | |
| 2346 * all data blocks until there are no more translations to be done (or | |
| 2347 * we hit the end of the file, which can only happen in case a write fails, | |
| 2348 * e.g. when file system if full). | |
| 2349 * ml_find_line() does the work by translating the negative block numbers | |
| 2350 * when getting the first line of each data block. | |
| 2351 */ | |
| 2352 if (mf_need_trans(mfp) && !got_int) | |
| 2353 { | |
| 2354 lnum = 1; | |
| 2355 while (mf_need_trans(mfp) && lnum <= buf->b_ml.ml_line_count) | |
| 2356 { | |
| 2357 hp = ml_find_line(buf, lnum, ML_FIND); | |
| 2358 if (hp == NULL) | |
| 2359 { | |
| 2360 status = FAIL; | |
| 2361 goto theend; | |
| 2362 } | |
| 2363 CHECK(buf->b_ml.ml_locked_low != lnum, "low != lnum"); | |
| 2364 lnum = buf->b_ml.ml_locked_high + 1; | |
| 2365 } | |
| 2366 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
| 2367 /* sync the updated pointer blocks */ | |
| 2368 if (mf_sync(mfp, MFS_ALL | MFS_FLUSH) == FAIL) | |
| 2369 status = FAIL; | |
| 2370 buf->b_ml.ml_stack_top = 0; /* stack is invalid now */ | |
| 2371 } | |
| 2372 theend: | |
| 2373 got_int |= got_int_save; | |
| 2374 | |
| 2375 if (message) | |
| 2376 { | |
| 2377 if (status == OK) | |
| 2378 MSG(_("File preserved")); | |
| 2379 else | |
| 2380 EMSG(_("E314: Preserve failed")); | |
| 2381 } | |
| 2382 } | |
| 2383 | |
| 2384 /* | |
| 2385 * NOTE: The pointer returned by the ml_get_*() functions only remains valid | |
| 2386 * until the next call! | |
| 2387 * line1 = ml_get(1); | |
| 2388 * line2 = ml_get(2); // line1 is now invalid! | |
| 2389 * Make a copy of the line if necessary. | |
| 2390 */ | |
| 2391 /* | |
| 2657 | 2392 * Return a pointer to a (read-only copy of a) line. |
| 7 | 2393 * |
| 2394 * On failure an error message is given and IObuff is returned (to avoid | |
| 2395 * having to check for error everywhere). | |
| 2396 */ | |
| 2397 char_u * | |
|
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|
2398 ml_get(linenr_T lnum) |
| 7 | 2399 { |
| 2400 return ml_get_buf(curbuf, lnum, FALSE); | |
| 2401 } | |
| 2402 | |
| 2403 /* | |
| 2657 | 2404 * Return pointer to position "pos". |
| 7 | 2405 */ |
| 2406 char_u * | |
|
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|
2407 ml_get_pos(pos_T *pos) |
| 7 | 2408 { |
| 2409 return (ml_get_buf(curbuf, pos->lnum, FALSE) + pos->col); | |
| 2410 } | |
| 2411 | |
| 2412 /* | |
| 2657 | 2413 * Return pointer to cursor line. |
| 7 | 2414 */ |
| 2415 char_u * | |
|
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2416 ml_get_curline(void) |
| 7 | 2417 { |
| 2418 return ml_get_buf(curbuf, curwin->w_cursor.lnum, FALSE); | |
| 2419 } | |
| 2420 | |
| 2421 /* | |
| 2657 | 2422 * Return pointer to cursor position. |
| 7 | 2423 */ |
| 2424 char_u * | |
|
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|
2425 ml_get_cursor(void) |
| 7 | 2426 { |
| 2427 return (ml_get_buf(curbuf, curwin->w_cursor.lnum, FALSE) + | |
| 2428 curwin->w_cursor.col); | |
| 2429 } | |
| 2430 | |
| 2431 /* | |
| 2657 | 2432 * Return a pointer to a line in a specific buffer |
| 7 | 2433 * |
| 2434 * "will_change": if TRUE mark the buffer dirty (chars in the line will be | |
| 2435 * changed) | |
| 2436 */ | |
| 2437 char_u * | |
|
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|
2438 ml_get_buf( |
|
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2439 buf_T *buf, |
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2440 linenr_T lnum, |
|
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|
2441 int will_change) /* line will be changed */ |
| 7 | 2442 { |
| 1068 | 2443 bhdr_T *hp; |
| 2444 DATA_BL *dp; | |
| 2445 char_u *ptr; | |
| 2446 static int recursive = 0; | |
| 7 | 2447 |
| 2448 if (lnum > buf->b_ml.ml_line_count) /* invalid line number */ | |
| 2449 { | |
| 1068 | 2450 if (recursive == 0) |
| 2451 { | |
| 2452 /* Avoid giving this message for a recursive call, may happen when | |
| 2453 * the GUI redraws part of the text. */ | |
| 2454 ++recursive; | |
|
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|
2455 IEMSGN(_("E315: ml_get: invalid lnum: %ld"), lnum); |
| 1068 | 2456 --recursive; |
| 2457 } | |
| 7 | 2458 errorret: |
| 2459 STRCPY(IObuff, "???"); | |
| 2460 return IObuff; | |
| 2461 } | |
| 2462 if (lnum <= 0) /* pretend line 0 is line 1 */ | |
| 2463 lnum = 1; | |
| 2464 | |
| 2465 if (buf->b_ml.ml_mfp == NULL) /* there are no lines */ | |
| 2466 return (char_u *)""; | |
| 2467 | |
|
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2468 /* |
|
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2469 * See if it is the same line as requested last time. |
|
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2470 * Otherwise may need to flush last used line. |
|
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2471 * Don't use the last used line when 'swapfile' is reset, need to load all |
|
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2472 * blocks. |
|
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2473 */ |
| 1066 | 2474 if (buf->b_ml.ml_line_lnum != lnum || mf_dont_release) |
| 7 | 2475 { |
| 2476 ml_flush_line(buf); | |
| 2477 | |
| 2478 /* | |
| 2479 * Find the data block containing the line. | |
| 2480 * This also fills the stack with the blocks from the root to the data | |
| 2481 * block and releases any locked block. | |
| 2482 */ | |
| 2483 if ((hp = ml_find_line(buf, lnum, ML_FIND)) == NULL) | |
| 2484 { | |
| 1068 | 2485 if (recursive == 0) |
| 2486 { | |
| 2487 /* Avoid giving this message for a recursive call, may happen | |
| 2488 * when the GUI redraws part of the text. */ | |
| 2489 ++recursive; | |
|
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|
2490 IEMSGN(_("E316: ml_get: cannot find line %ld"), lnum); |
| 1068 | 2491 --recursive; |
| 2492 } | |
| 7 | 2493 goto errorret; |
| 2494 } | |
| 2495 | |
| 2496 dp = (DATA_BL *)(hp->bh_data); | |
| 2497 | |
| 2498 ptr = (char_u *)dp + ((dp->db_index[lnum - buf->b_ml.ml_locked_low]) & DB_INDEX_MASK); | |
| 2499 buf->b_ml.ml_line_ptr = ptr; | |
| 2500 buf->b_ml.ml_line_lnum = lnum; | |
| 2501 buf->b_ml.ml_flags &= ~ML_LINE_DIRTY; | |
| 2502 } | |
| 2503 if (will_change) | |
| 2504 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 2505 | |
| 2506 return buf->b_ml.ml_line_ptr; | |
| 2507 } | |
| 2508 | |
| 2509 /* | |
| 2510 * Check if a line that was just obtained by a call to ml_get | |
| 2511 * is in allocated memory. | |
| 2512 */ | |
| 2513 int | |
|
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|
2514 ml_line_alloced(void) |
| 7 | 2515 { |
| 2516 return (curbuf->b_ml.ml_flags & ML_LINE_DIRTY); | |
| 2517 } | |
| 2518 | |
| 2519 /* | |
| 2520 * Append a line after lnum (may be 0 to insert a line in front of the file). | |
| 2521 * "line" does not need to be allocated, but can't be another line in a | |
| 2522 * buffer, unlocking may make it invalid. | |
| 2523 * | |
| 2524 * newfile: TRUE when starting to edit a new file, meaning that pe_old_lnum | |
| 2525 * will be set for recovery | |
| 2526 * Check: The caller of this function should probably also call | |
| 2527 * appended_lines(). | |
| 2528 * | |
| 2529 * return FAIL for failure, OK otherwise | |
| 2530 */ | |
| 2531 int | |
|
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2532 ml_append( |
|
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|
2533 linenr_T lnum, /* append after this line (can be 0) */ |
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2534 char_u *line, /* text of the new line */ |
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|
2535 colnr_T len, /* length of new line, including NUL, or 0 */ |
|
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2536 int newfile) /* flag, see above */ |
| 7 | 2537 { |
| 2538 /* When starting up, we might still need to create the memfile */ | |
|
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|
2539 if (curbuf->b_ml.ml_mfp == NULL && open_buffer(FALSE, NULL, 0) == FAIL) |
| 7 | 2540 return FAIL; |
| 2541 | |
| 2542 if (curbuf->b_ml.ml_line_lnum != 0) | |
| 2543 ml_flush_line(curbuf); | |
| 2544 return ml_append_int(curbuf, lnum, line, len, newfile, FALSE); | |
| 2545 } | |
| 2546 | |
|
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2547 #if defined(FEAT_SPELL) || (defined(FEAT_QUICKFIX) && defined(FEAT_WINDOWS)) \ |
|
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|
2548 || defined(PROTO) |
| 625 | 2549 /* |
| 2550 * Like ml_append() but for an arbitrary buffer. The buffer must already have | |
| 2551 * a memline. | |
| 2552 */ | |
| 2553 int | |
|
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|
2554 ml_append_buf( |
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|
2555 buf_T *buf, |
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|
2556 linenr_T lnum, /* append after this line (can be 0) */ |
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|
2557 char_u *line, /* text of the new line */ |
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|
2558 colnr_T len, /* length of new line, including NUL, or 0 */ |
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|
2559 int newfile) /* flag, see above */ |
| 625 | 2560 { |
| 2561 if (buf->b_ml.ml_mfp == NULL) | |
| 2562 return FAIL; | |
| 2563 | |
| 2564 if (buf->b_ml.ml_line_lnum != 0) | |
| 2565 ml_flush_line(buf); | |
| 2566 return ml_append_int(buf, lnum, line, len, newfile, FALSE); | |
| 2567 } | |
| 2568 #endif | |
| 2569 | |
| 7 | 2570 static int |
|
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2571 ml_append_int( |
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2572 buf_T *buf, |
|
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2573 linenr_T lnum, /* append after this line (can be 0) */ |
|
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|
2574 char_u *line, /* text of the new line */ |
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|
2575 colnr_T len, /* length of line, including NUL, or 0 */ |
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|
2576 int newfile, /* flag, see above */ |
|
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|
2577 int mark) /* mark the new line */ |
| 7 | 2578 { |
| 2579 int i; | |
| 2580 int line_count; /* number of indexes in current block */ | |
| 2581 int offset; | |
| 2582 int from, to; | |
| 2583 int space_needed; /* space needed for new line */ | |
| 2584 int page_size; | |
| 2585 int page_count; | |
| 2586 int db_idx; /* index for lnum in data block */ | |
| 2587 bhdr_T *hp; | |
| 2588 memfile_T *mfp; | |
| 2589 DATA_BL *dp; | |
| 2590 PTR_BL *pp; | |
| 2591 infoptr_T *ip; | |
| 2592 | |
| 2593 /* lnum out of range */ | |
| 2594 if (lnum > buf->b_ml.ml_line_count || buf->b_ml.ml_mfp == NULL) | |
| 2595 return FAIL; | |
| 2596 | |
| 2597 if (lowest_marked && lowest_marked > lnum) | |
| 2598 lowest_marked = lnum + 1; | |
| 2599 | |
| 2600 if (len == 0) | |
| 2601 len = (colnr_T)STRLEN(line) + 1; /* space needed for the text */ | |
| 2602 space_needed = len + INDEX_SIZE; /* space needed for text + index */ | |
| 2603 | |
| 2604 mfp = buf->b_ml.ml_mfp; | |
| 2605 page_size = mfp->mf_page_size; | |
| 2606 | |
| 2607 /* | |
| 2608 * find the data block containing the previous line | |
| 2609 * This also fills the stack with the blocks from the root to the data block | |
| 2610 * This also releases any locked block. | |
| 2611 */ | |
| 2612 if ((hp = ml_find_line(buf, lnum == 0 ? (linenr_T)1 : lnum, | |
| 2613 ML_INSERT)) == NULL) | |
| 2614 return FAIL; | |
| 2615 | |
| 2616 buf->b_ml.ml_flags &= ~ML_EMPTY; | |
| 2617 | |
| 2618 if (lnum == 0) /* got line one instead, correct db_idx */ | |
| 2619 db_idx = -1; /* careful, it is negative! */ | |
| 2620 else | |
| 2621 db_idx = lnum - buf->b_ml.ml_locked_low; | |
| 2622 /* get line count before the insertion */ | |
| 2623 line_count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low; | |
| 2624 | |
| 2625 dp = (DATA_BL *)(hp->bh_data); | |
| 2626 | |
| 2627 /* | |
| 2628 * If | |
| 2629 * - there is not enough room in the current block | |
| 2630 * - appending to the last line in the block | |
| 2631 * - not appending to the last line in the file | |
| 2632 * insert in front of the next block. | |
| 2633 */ | |
| 2634 if ((int)dp->db_free < space_needed && db_idx == line_count - 1 | |
| 2635 && lnum < buf->b_ml.ml_line_count) | |
| 2636 { | |
| 2637 /* | |
| 2638 * Now that the line is not going to be inserted in the block that we | |
| 2639 * expected, the line count has to be adjusted in the pointer blocks | |
| 2640 * by using ml_locked_lineadd. | |
| 2641 */ | |
| 2642 --(buf->b_ml.ml_locked_lineadd); | |
| 2643 --(buf->b_ml.ml_locked_high); | |
| 2644 if ((hp = ml_find_line(buf, lnum + 1, ML_INSERT)) == NULL) | |
| 2645 return FAIL; | |
| 2646 | |
| 2647 db_idx = -1; /* careful, it is negative! */ | |
| 2648 /* get line count before the insertion */ | |
| 2649 line_count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low; | |
| 2650 CHECK(buf->b_ml.ml_locked_low != lnum + 1, "locked_low != lnum + 1"); | |
| 2651 | |
| 2652 dp = (DATA_BL *)(hp->bh_data); | |
| 2653 } | |
| 2654 | |
| 2655 ++buf->b_ml.ml_line_count; | |
| 2656 | |
| 2657 if ((int)dp->db_free >= space_needed) /* enough room in data block */ | |
| 2658 { | |
| 2659 /* | |
| 2660 * Insert new line in existing data block, or in data block allocated above. | |
| 2661 */ | |
| 2662 dp->db_txt_start -= len; | |
| 2663 dp->db_free -= space_needed; | |
| 2664 ++(dp->db_line_count); | |
| 2665 | |
| 2666 /* | |
| 2667 * move the text of the lines that follow to the front | |
| 2668 * adjust the indexes of the lines that follow | |
| 2669 */ | |
| 2670 if (line_count > db_idx + 1) /* if there are following lines */ | |
| 2671 { | |
| 2672 /* | |
| 2673 * Offset is the start of the previous line. | |
| 2674 * This will become the character just after the new line. | |
| 2675 */ | |
| 2676 if (db_idx < 0) | |
| 2677 offset = dp->db_txt_end; | |
| 2678 else | |
| 2679 offset = ((dp->db_index[db_idx]) & DB_INDEX_MASK); | |
| 2680 mch_memmove((char *)dp + dp->db_txt_start, | |
| 2681 (char *)dp + dp->db_txt_start + len, | |
| 2682 (size_t)(offset - (dp->db_txt_start + len))); | |
| 2683 for (i = line_count - 1; i > db_idx; --i) | |
| 2684 dp->db_index[i + 1] = dp->db_index[i] - len; | |
| 2685 dp->db_index[db_idx + 1] = offset - len; | |
| 2686 } | |
| 2687 else /* add line at the end */ | |
| 2688 dp->db_index[db_idx + 1] = dp->db_txt_start; | |
| 2689 | |
| 2690 /* | |
| 2691 * copy the text into the block | |
| 2692 */ | |
| 2693 mch_memmove((char *)dp + dp->db_index[db_idx + 1], line, (size_t)len); | |
| 2694 if (mark) | |
| 2695 dp->db_index[db_idx + 1] |= DB_MARKED; | |
| 2696 | |
| 2697 /* | |
| 2698 * Mark the block dirty. | |
| 2699 */ | |
| 2700 buf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 2701 if (!newfile) | |
| 2702 buf->b_ml.ml_flags |= ML_LOCKED_POS; | |
| 2703 } | |
| 2704 else /* not enough space in data block */ | |
| 2705 { | |
| 2706 /* | |
| 2707 * If there is not enough room we have to create a new data block and copy some | |
| 2708 * lines into it. | |
| 2709 * Then we have to insert an entry in the pointer block. | |
| 2710 * If this pointer block also is full, we go up another block, and so on, up | |
| 2711 * to the root if necessary. | |
| 2712 * The line counts in the pointer blocks have already been adjusted by | |
| 2713 * ml_find_line(). | |
| 2714 */ | |
| 2715 long line_count_left, line_count_right; | |
| 2716 int page_count_left, page_count_right; | |
| 2717 bhdr_T *hp_left; | |
| 2718 bhdr_T *hp_right; | |
| 2719 bhdr_T *hp_new; | |
| 2720 int lines_moved; | |
| 2721 int data_moved = 0; /* init to shut up gcc */ | |
| 2722 int total_moved = 0; /* init to shut up gcc */ | |
| 2723 DATA_BL *dp_right, *dp_left; | |
| 2724 int stack_idx; | |
| 2725 int in_left; | |
| 2726 int lineadd; | |
| 2727 blocknr_T bnum_left, bnum_right; | |
| 2728 linenr_T lnum_left, lnum_right; | |
| 2729 int pb_idx; | |
| 2730 PTR_BL *pp_new; | |
| 2731 | |
| 2732 /* | |
| 2733 * We are going to allocate a new data block. Depending on the | |
| 2734 * situation it will be put to the left or right of the existing | |
| 2735 * block. If possible we put the new line in the left block and move | |
| 2736 * the lines after it to the right block. Otherwise the new line is | |
| 2737 * also put in the right block. This method is more efficient when | |
| 2738 * inserting a lot of lines at one place. | |
| 2739 */ | |
| 2740 if (db_idx < 0) /* left block is new, right block is existing */ | |
| 2741 { | |
| 2742 lines_moved = 0; | |
| 2743 in_left = TRUE; | |
| 2744 /* space_needed does not change */ | |
| 2745 } | |
| 2746 else /* left block is existing, right block is new */ | |
| 2747 { | |
| 2748 lines_moved = line_count - db_idx - 1; | |
| 2749 if (lines_moved == 0) | |
| 2750 in_left = FALSE; /* put new line in right block */ | |
| 2751 /* space_needed does not change */ | |
| 2752 else | |
| 2753 { | |
| 2754 data_moved = ((dp->db_index[db_idx]) & DB_INDEX_MASK) - | |
| 2755 dp->db_txt_start; | |
| 2756 total_moved = data_moved + lines_moved * INDEX_SIZE; | |
| 2757 if ((int)dp->db_free + total_moved >= space_needed) | |
| 2758 { | |
| 2759 in_left = TRUE; /* put new line in left block */ | |
| 2760 space_needed = total_moved; | |
| 2761 } | |
| 2762 else | |
| 2763 { | |
| 2764 in_left = FALSE; /* put new line in right block */ | |
| 2765 space_needed += total_moved; | |
| 2766 } | |
| 2767 } | |
| 2768 } | |
| 2769 | |
| 2770 page_count = ((space_needed + HEADER_SIZE) + page_size - 1) / page_size; | |
| 2771 if ((hp_new = ml_new_data(mfp, newfile, page_count)) == NULL) | |
| 2772 { | |
| 2773 /* correct line counts in pointer blocks */ | |
| 2774 --(buf->b_ml.ml_locked_lineadd); | |
| 2775 --(buf->b_ml.ml_locked_high); | |
| 2776 return FAIL; | |
| 2777 } | |
| 2778 if (db_idx < 0) /* left block is new */ | |
| 2779 { | |
| 2780 hp_left = hp_new; | |
| 2781 hp_right = hp; | |
| 2782 line_count_left = 0; | |
| 2783 line_count_right = line_count; | |
| 2784 } | |
| 2785 else /* right block is new */ | |
| 2786 { | |
| 2787 hp_left = hp; | |
| 2788 hp_right = hp_new; | |
| 2789 line_count_left = line_count; | |
| 2790 line_count_right = 0; | |
| 2791 } | |
| 2792 dp_right = (DATA_BL *)(hp_right->bh_data); | |
| 2793 dp_left = (DATA_BL *)(hp_left->bh_data); | |
| 2794 bnum_left = hp_left->bh_bnum; | |
| 2795 bnum_right = hp_right->bh_bnum; | |
| 2796 page_count_left = hp_left->bh_page_count; | |
| 2797 page_count_right = hp_right->bh_page_count; | |
| 2798 | |
| 2799 /* | |
| 2800 * May move the new line into the right/new block. | |
| 2801 */ | |
| 2802 if (!in_left) | |
| 2803 { | |
| 2804 dp_right->db_txt_start -= len; | |
| 2805 dp_right->db_free -= len + INDEX_SIZE; | |
| 2806 dp_right->db_index[0] = dp_right->db_txt_start; | |
| 2807 if (mark) | |
| 2808 dp_right->db_index[0] |= DB_MARKED; | |
| 2809 | |
| 2810 mch_memmove((char *)dp_right + dp_right->db_txt_start, | |
| 2811 line, (size_t)len); | |
| 2812 ++line_count_right; | |
| 2813 } | |
| 2814 /* | |
| 2815 * may move lines from the left/old block to the right/new one. | |
| 2816 */ | |
| 2817 if (lines_moved) | |
| 2818 { | |
| 2819 /* | |
| 2820 */ | |
| 2821 dp_right->db_txt_start -= data_moved; | |
| 2822 dp_right->db_free -= total_moved; | |
| 2823 mch_memmove((char *)dp_right + dp_right->db_txt_start, | |
| 2824 (char *)dp_left + dp_left->db_txt_start, | |
| 2825 (size_t)data_moved); | |
| 2826 offset = dp_right->db_txt_start - dp_left->db_txt_start; | |
| 2827 dp_left->db_txt_start += data_moved; | |
| 2828 dp_left->db_free += total_moved; | |
| 2829 | |
| 2830 /* | |
| 2831 * update indexes in the new block | |
| 2832 */ | |
| 2833 for (to = line_count_right, from = db_idx + 1; | |
| 2834 from < line_count_left; ++from, ++to) | |
| 2835 dp_right->db_index[to] = dp->db_index[from] + offset; | |
| 2836 line_count_right += lines_moved; | |
| 2837 line_count_left -= lines_moved; | |
| 2838 } | |
| 2839 | |
| 2840 /* | |
| 2841 * May move the new line into the left (old or new) block. | |
| 2842 */ | |
| 2843 if (in_left) | |
| 2844 { | |
| 2845 dp_left->db_txt_start -= len; | |
| 2846 dp_left->db_free -= len + INDEX_SIZE; | |
| 2847 dp_left->db_index[line_count_left] = dp_left->db_txt_start; | |
| 2848 if (mark) | |
| 2849 dp_left->db_index[line_count_left] |= DB_MARKED; | |
| 2850 mch_memmove((char *)dp_left + dp_left->db_txt_start, | |
| 2851 line, (size_t)len); | |
| 2852 ++line_count_left; | |
| 2853 } | |
| 2854 | |
| 2855 if (db_idx < 0) /* left block is new */ | |
| 2856 { | |
| 2857 lnum_left = lnum + 1; | |
| 2858 lnum_right = 0; | |
| 2859 } | |
| 2860 else /* right block is new */ | |
| 2861 { | |
| 2862 lnum_left = 0; | |
| 2863 if (in_left) | |
| 2864 lnum_right = lnum + 2; | |
| 2865 else | |
| 2866 lnum_right = lnum + 1; | |
| 2867 } | |
| 2868 dp_left->db_line_count = line_count_left; | |
| 2869 dp_right->db_line_count = line_count_right; | |
| 2870 | |
| 2871 /* | |
| 2872 * release the two data blocks | |
| 2873 * The new one (hp_new) already has a correct blocknumber. | |
| 2874 * The old one (hp, in ml_locked) gets a positive blocknumber if | |
| 2875 * we changed it and we are not editing a new file. | |
| 2876 */ | |
| 2877 if (lines_moved || in_left) | |
| 2878 buf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 2879 if (!newfile && db_idx >= 0 && in_left) | |
| 2880 buf->b_ml.ml_flags |= ML_LOCKED_POS; | |
| 2881 mf_put(mfp, hp_new, TRUE, FALSE); | |
| 2882 | |
| 2883 /* | |
| 2884 * flush the old data block | |
| 2885 * set ml_locked_lineadd to 0, because the updating of the | |
| 2886 * pointer blocks is done below | |
| 2887 */ | |
| 2888 lineadd = buf->b_ml.ml_locked_lineadd; | |
| 2889 buf->b_ml.ml_locked_lineadd = 0; | |
| 2890 ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush data block */ | |
| 2891 | |
| 2892 /* | |
| 2893 * update pointer blocks for the new data block | |
| 2894 */ | |
| 2895 for (stack_idx = buf->b_ml.ml_stack_top - 1; stack_idx >= 0; | |
| 2896 --stack_idx) | |
| 2897 { | |
| 2898 ip = &(buf->b_ml.ml_stack[stack_idx]); | |
| 2899 pb_idx = ip->ip_index; | |
| 2900 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
| 2901 return FAIL; | |
| 2902 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
| 2903 if (pp->pb_id != PTR_ID) | |
| 2904 { | |
|
10359
66f1b5bf3fa6
commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
2905 IEMSG(_("E317: pointer block id wrong 3")); |
| 7 | 2906 mf_put(mfp, hp, FALSE, FALSE); |
| 2907 return FAIL; | |
| 2908 } | |
| 2909 /* | |
| 2910 * TODO: If the pointer block is full and we are adding at the end | |
| 2911 * try to insert in front of the next block | |
| 2912 */ | |
| 2913 /* block not full, add one entry */ | |
| 2914 if (pp->pb_count < pp->pb_count_max) | |
| 2915 { | |
| 2916 if (pb_idx + 1 < (int)pp->pb_count) | |
| 2917 mch_memmove(&pp->pb_pointer[pb_idx + 2], | |
| 2918 &pp->pb_pointer[pb_idx + 1], | |
| 2919 (size_t)(pp->pb_count - pb_idx - 1) * sizeof(PTR_EN)); | |
| 2920 ++pp->pb_count; | |
| 2921 pp->pb_pointer[pb_idx].pe_line_count = line_count_left; | |
| 2922 pp->pb_pointer[pb_idx].pe_bnum = bnum_left; | |
| 2923 pp->pb_pointer[pb_idx].pe_page_count = page_count_left; | |
| 2924 pp->pb_pointer[pb_idx + 1].pe_line_count = line_count_right; | |
| 2925 pp->pb_pointer[pb_idx + 1].pe_bnum = bnum_right; | |
| 2926 pp->pb_pointer[pb_idx + 1].pe_page_count = page_count_right; | |
| 2927 | |
| 2928 if (lnum_left != 0) | |
| 2929 pp->pb_pointer[pb_idx].pe_old_lnum = lnum_left; | |
| 2930 if (lnum_right != 0) | |
| 2931 pp->pb_pointer[pb_idx + 1].pe_old_lnum = lnum_right; | |
| 2932 | |
| 2933 mf_put(mfp, hp, TRUE, FALSE); | |
| 2934 buf->b_ml.ml_stack_top = stack_idx + 1; /* truncate stack */ | |
| 2935 | |
| 2936 if (lineadd) | |
| 2937 { | |
| 2938 --(buf->b_ml.ml_stack_top); | |
| 1167 | 2939 /* fix line count for rest of blocks in the stack */ |
| 7 | 2940 ml_lineadd(buf, lineadd); |
| 2941 /* fix stack itself */ | |
| 2942 buf->b_ml.ml_stack[buf->b_ml.ml_stack_top].ip_high += | |
| 2943 lineadd; | |
| 2944 ++(buf->b_ml.ml_stack_top); | |
| 2945 } | |
| 2946 | |
| 2947 /* | |
| 2948 * We are finished, break the loop here. | |
| 2949 */ | |
| 2950 break; | |
| 2951 } | |
| 2952 else /* pointer block full */ | |
| 2953 { | |
| 2954 /* | |
| 2955 * split the pointer block | |
| 2956 * allocate a new pointer block | |
| 2957 * move some of the pointer into the new block | |
| 2958 * prepare for updating the parent block | |
| 2959 */ | |
| 2960 for (;;) /* do this twice when splitting block 1 */ | |
| 2961 { | |
| 2962 hp_new = ml_new_ptr(mfp); | |
| 2963 if (hp_new == NULL) /* TODO: try to fix tree */ | |
| 2964 return FAIL; | |
| 2965 pp_new = (PTR_BL *)(hp_new->bh_data); | |
| 2966 | |
| 2967 if (hp->bh_bnum != 1) | |
| 2968 break; | |
| 2969 | |
| 2970 /* | |
| 2971 * if block 1 becomes full the tree is given an extra level | |
| 2972 * The pointers from block 1 are moved into the new block. | |
| 2973 * block 1 is updated to point to the new block | |
| 2974 * then continue to split the new block | |
| 2975 */ | |
| 2976 mch_memmove(pp_new, pp, (size_t)page_size); | |
| 2977 pp->pb_count = 1; | |
| 2978 pp->pb_pointer[0].pe_bnum = hp_new->bh_bnum; | |
| 2979 pp->pb_pointer[0].pe_line_count = buf->b_ml.ml_line_count; | |
| 2980 pp->pb_pointer[0].pe_old_lnum = 1; | |
| 2981 pp->pb_pointer[0].pe_page_count = 1; | |
| 2982 mf_put(mfp, hp, TRUE, FALSE); /* release block 1 */ | |
| 2983 hp = hp_new; /* new block is to be split */ | |
| 2984 pp = pp_new; | |
| 2985 CHECK(stack_idx != 0, _("stack_idx should be 0")); | |
| 2986 ip->ip_index = 0; | |
| 2987 ++stack_idx; /* do block 1 again later */ | |
| 2988 } | |
| 2989 /* | |
| 2990 * move the pointers after the current one to the new block | |
| 2991 * If there are none, the new entry will be in the new block. | |
| 2992 */ | |
| 2993 total_moved = pp->pb_count - pb_idx - 1; | |
| 2994 if (total_moved) | |
| 2995 { | |
| 2996 mch_memmove(&pp_new->pb_pointer[0], | |
| 2997 &pp->pb_pointer[pb_idx + 1], | |
| 2998 (size_t)(total_moved) * sizeof(PTR_EN)); | |
| 2999 pp_new->pb_count = total_moved; | |
| 3000 pp->pb_count -= total_moved - 1; | |
| 3001 pp->pb_pointer[pb_idx + 1].pe_bnum = bnum_right; | |
| 3002 pp->pb_pointer[pb_idx + 1].pe_line_count = line_count_right; | |
| 3003 pp->pb_pointer[pb_idx + 1].pe_page_count = page_count_right; | |
| 3004 if (lnum_right) | |
| 3005 pp->pb_pointer[pb_idx + 1].pe_old_lnum = lnum_right; | |
| 3006 } | |
| 3007 else | |
| 3008 { | |
| 3009 pp_new->pb_count = 1; | |
| 3010 pp_new->pb_pointer[0].pe_bnum = bnum_right; | |
| 3011 pp_new->pb_pointer[0].pe_line_count = line_count_right; | |
| 3012 pp_new->pb_pointer[0].pe_page_count = page_count_right; | |
| 3013 pp_new->pb_pointer[0].pe_old_lnum = lnum_right; | |
| 3014 } | |
| 3015 pp->pb_pointer[pb_idx].pe_bnum = bnum_left; | |
| 3016 pp->pb_pointer[pb_idx].pe_line_count = line_count_left; | |
| 3017 pp->pb_pointer[pb_idx].pe_page_count = page_count_left; | |
| 3018 if (lnum_left) | |
| 3019 pp->pb_pointer[pb_idx].pe_old_lnum = lnum_left; | |
| 3020 lnum_left = 0; | |
| 3021 lnum_right = 0; | |
| 3022 | |
| 3023 /* | |
| 3024 * recompute line counts | |
| 3025 */ | |
| 3026 line_count_right = 0; | |
| 3027 for (i = 0; i < (int)pp_new->pb_count; ++i) | |
| 3028 line_count_right += pp_new->pb_pointer[i].pe_line_count; | |
| 3029 line_count_left = 0; | |
| 3030 for (i = 0; i < (int)pp->pb_count; ++i) | |
| 3031 line_count_left += pp->pb_pointer[i].pe_line_count; | |
| 3032 | |
| 3033 bnum_left = hp->bh_bnum; | |
| 3034 bnum_right = hp_new->bh_bnum; | |
| 3035 page_count_left = 1; | |
| 3036 page_count_right = 1; | |
| 3037 mf_put(mfp, hp, TRUE, FALSE); | |
| 3038 mf_put(mfp, hp_new, TRUE, FALSE); | |
| 3039 } | |
| 3040 } | |
| 3041 | |
| 3042 /* | |
| 3043 * Safety check: fallen out of for loop? | |
| 3044 */ | |
| 3045 if (stack_idx < 0) | |
| 3046 { | |
|
10359
66f1b5bf3fa6
commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
3047 IEMSG(_("E318: Updated too many blocks?")); |
| 7 | 3048 buf->b_ml.ml_stack_top = 0; /* invalidate stack */ |
| 3049 } | |
| 3050 } | |
| 3051 | |
| 3052 #ifdef FEAT_BYTEOFF | |
| 3053 /* The line was inserted below 'lnum' */ | |
| 3054 ml_updatechunk(buf, lnum + 1, (long)len, ML_CHNK_ADDLINE); | |
| 3055 #endif | |
| 3056 #ifdef FEAT_NETBEANS_INTG | |
| 2210 | 3057 if (netbeans_active()) |
| 7 | 3058 { |
| 3059 if (STRLEN(line) > 0) | |
| 835 | 3060 netbeans_inserted(buf, lnum+1, (colnr_T)0, line, (int)STRLEN(line)); |
| 34 | 3061 netbeans_inserted(buf, lnum+1, (colnr_T)STRLEN(line), |
| 7 | 3062 (char_u *)"\n", 1); |
| 3063 } | |
| 3064 #endif | |
|
8493
caed4b2d305f
commit https://github.com/vim/vim/commit/509ce2a558e7e0c03242e32e844255af52f1c821
Christian Brabandt <cb@256bit.org>
parents:
8422
diff
changeset
|
3065 #ifdef FEAT_JOB_CHANNEL |
|
8422
5d2c84be23b5
commit https://github.com/vim/vim/commit/99ef06296f3c37490511c03786a2c8672e015c56
Christian Brabandt <cb@256bit.org>
parents:
8212
diff
changeset
|
3066 if (buf->b_write_to_channel) |
|
5d2c84be23b5
commit https://github.com/vim/vim/commit/99ef06296f3c37490511c03786a2c8672e015c56
Christian Brabandt <cb@256bit.org>
parents:
8212
diff
changeset
|
3067 channel_write_new_lines(buf); |
|
5d2c84be23b5
commit https://github.com/vim/vim/commit/99ef06296f3c37490511c03786a2c8672e015c56
Christian Brabandt <cb@256bit.org>
parents:
8212
diff
changeset
|
3068 #endif |
|
5d2c84be23b5
commit https://github.com/vim/vim/commit/99ef06296f3c37490511c03786a2c8672e015c56
Christian Brabandt <cb@256bit.org>
parents:
8212
diff
changeset
|
3069 |
| 7 | 3070 return OK; |
| 3071 } | |
| 3072 | |
| 3073 /* | |
| 625 | 3074 * Replace line lnum, with buffering, in current buffer. |
| 7 | 3075 * |
| 720 | 3076 * If "copy" is TRUE, make a copy of the line, otherwise the line has been |
| 7 | 3077 * copied to allocated memory already. |
| 3078 * | |
| 3079 * Check: The caller of this function should probably also call | |
| 3080 * changed_lines(), unless update_screen(NOT_VALID) is used. | |
| 3081 * | |
| 3082 * return FAIL for failure, OK otherwise | |
| 3083 */ | |
| 3084 int | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3085 ml_replace(linenr_T lnum, char_u *line, int copy) |
| 7 | 3086 { |
| 3087 if (line == NULL) /* just checking... */ | |
| 3088 return FAIL; | |
| 3089 | |
| 3090 /* When starting up, we might still need to create the memfile */ | |
|
2394
a3aca345aafa
Add the 'undoreload' option to be able to undo a file reload.
Bram Moolenaar <bram@vim.org>
parents:
2360
diff
changeset
|
3091 if (curbuf->b_ml.ml_mfp == NULL && open_buffer(FALSE, NULL, 0) == FAIL) |
| 7 | 3092 return FAIL; |
| 3093 | |
| 3094 if (copy && (line = vim_strsave(line)) == NULL) /* allocate memory */ | |
| 3095 return FAIL; | |
| 3096 #ifdef FEAT_NETBEANS_INTG | |
| 2210 | 3097 if (netbeans_active()) |
| 7 | 3098 { |
| 3099 netbeans_removed(curbuf, lnum, 0, (long)STRLEN(ml_get(lnum))); | |
| 835 | 3100 netbeans_inserted(curbuf, lnum, 0, line, (int)STRLEN(line)); |
| 7 | 3101 } |
| 3102 #endif | |
| 3103 if (curbuf->b_ml.ml_line_lnum != lnum) /* other line buffered */ | |
| 3104 ml_flush_line(curbuf); /* flush it */ | |
| 3105 else if (curbuf->b_ml.ml_flags & ML_LINE_DIRTY) /* same line allocated */ | |
| 3106 vim_free(curbuf->b_ml.ml_line_ptr); /* free it */ | |
| 3107 curbuf->b_ml.ml_line_ptr = line; | |
| 3108 curbuf->b_ml.ml_line_lnum = lnum; | |
| 3109 curbuf->b_ml.ml_flags = (curbuf->b_ml.ml_flags | ML_LINE_DIRTY) & ~ML_EMPTY; | |
| 3110 | |
| 3111 return OK; | |
| 3112 } | |
| 3113 | |
| 3114 /* | |
| 625 | 3115 * Delete line 'lnum' in the current buffer. |
| 7 | 3116 * |
| 3117 * Check: The caller of this function should probably also call | |
| 3118 * deleted_lines() after this. | |
| 3119 * | |
| 3120 * return FAIL for failure, OK otherwise | |
| 3121 */ | |
| 3122 int | |
|
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7803
diff
changeset
|
3123 ml_delete(linenr_T lnum, int message) |
| 7 | 3124 { |
| 3125 ml_flush_line(curbuf); | |
| 3126 return ml_delete_int(curbuf, lnum, message); | |
| 3127 } | |
| 3128 | |
| 3129 static int | |
|
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7803
diff
changeset
|
3130 ml_delete_int(buf_T *buf, linenr_T lnum, int message) |
| 7 | 3131 { |
| 3132 bhdr_T *hp; | |
| 3133 memfile_T *mfp; | |
| 3134 DATA_BL *dp; | |
| 3135 PTR_BL *pp; | |
| 3136 infoptr_T *ip; | |
| 3137 int count; /* number of entries in block */ | |
| 3138 int idx; | |
| 3139 int stack_idx; | |
| 3140 int text_start; | |
| 3141 int line_start; | |
| 3142 long line_size; | |
| 3143 int i; | |
| 3144 | |
| 3145 if (lnum < 1 || lnum > buf->b_ml.ml_line_count) | |
| 3146 return FAIL; | |
| 3147 | |
| 3148 if (lowest_marked && lowest_marked > lnum) | |
| 3149 lowest_marked--; | |
| 3150 | |
| 3151 /* | |
| 3152 * If the file becomes empty the last line is replaced by an empty line. | |
| 3153 */ | |
| 3154 if (buf->b_ml.ml_line_count == 1) /* file becomes empty */ | |
| 3155 { | |
| 3156 if (message | |
| 3157 #ifdef FEAT_NETBEANS_INTG | |
| 3158 && !netbeansSuppressNoLines | |
| 3159 #endif | |
| 3160 ) | |
| 680 | 3161 set_keep_msg((char_u *)_(no_lines_msg), 0); |
| 3162 | |
| 4352 | 3163 /* FEAT_BYTEOFF already handled in there, don't worry 'bout it below */ |
| 7 | 3164 i = ml_replace((linenr_T)1, (char_u *)"", TRUE); |
| 3165 buf->b_ml.ml_flags |= ML_EMPTY; | |
| 3166 | |
| 3167 return i; | |
| 3168 } | |
| 3169 | |
| 3170 /* | |
| 3171 * find the data block containing the line | |
| 3172 * This also fills the stack with the blocks from the root to the data block | |
| 3173 * This also releases any locked block. | |
| 3174 */ | |
| 3175 mfp = buf->b_ml.ml_mfp; | |
| 3176 if (mfp == NULL) | |
| 3177 return FAIL; | |
| 3178 | |
| 3179 if ((hp = ml_find_line(buf, lnum, ML_DELETE)) == NULL) | |
| 3180 return FAIL; | |
| 3181 | |
| 3182 dp = (DATA_BL *)(hp->bh_data); | |
| 3183 /* compute line count before the delete */ | |
| 3184 count = (long)(buf->b_ml.ml_locked_high) | |
| 3185 - (long)(buf->b_ml.ml_locked_low) + 2; | |
| 3186 idx = lnum - buf->b_ml.ml_locked_low; | |
| 3187 | |
| 3188 --buf->b_ml.ml_line_count; | |
| 3189 | |
| 3190 line_start = ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 3191 if (idx == 0) /* first line in block, text at the end */ | |
| 3192 line_size = dp->db_txt_end - line_start; | |
| 3193 else | |
| 3194 line_size = ((dp->db_index[idx - 1]) & DB_INDEX_MASK) - line_start; | |
| 3195 | |
| 3196 #ifdef FEAT_NETBEANS_INTG | |
| 2210 | 3197 if (netbeans_active()) |
| 34 | 3198 netbeans_removed(buf, lnum, 0, (long)line_size); |
| 7 | 3199 #endif |
| 3200 | |
| 3201 /* | |
| 3202 * special case: If there is only one line in the data block it becomes empty. | |
| 3203 * Then we have to remove the entry, pointing to this data block, from the | |
| 3204 * pointer block. If this pointer block also becomes empty, we go up another | |
| 3205 * block, and so on, up to the root if necessary. | |
| 3206 * The line counts in the pointer blocks have already been adjusted by | |
| 3207 * ml_find_line(). | |
| 3208 */ | |
| 3209 if (count == 1) | |
| 3210 { | |
| 3211 mf_free(mfp, hp); /* free the data block */ | |
| 3212 buf->b_ml.ml_locked = NULL; | |
| 3213 | |
| 2823 | 3214 for (stack_idx = buf->b_ml.ml_stack_top - 1; stack_idx >= 0; |
| 3215 --stack_idx) | |
| 7 | 3216 { |
| 3217 buf->b_ml.ml_stack_top = 0; /* stack is invalid when failing */ | |
| 3218 ip = &(buf->b_ml.ml_stack[stack_idx]); | |
| 3219 idx = ip->ip_index; | |
| 3220 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
| 3221 return FAIL; | |
| 3222 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
| 3223 if (pp->pb_id != PTR_ID) | |
| 3224 { | |
|
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diff
changeset
|
3225 IEMSG(_("E317: pointer block id wrong 4")); |
| 7 | 3226 mf_put(mfp, hp, FALSE, FALSE); |
| 3227 return FAIL; | |
| 3228 } | |
| 3229 count = --(pp->pb_count); | |
| 3230 if (count == 0) /* the pointer block becomes empty! */ | |
| 3231 mf_free(mfp, hp); | |
| 3232 else | |
| 3233 { | |
| 3234 if (count != idx) /* move entries after the deleted one */ | |
| 3235 mch_memmove(&pp->pb_pointer[idx], &pp->pb_pointer[idx + 1], | |
| 3236 (size_t)(count - idx) * sizeof(PTR_EN)); | |
| 3237 mf_put(mfp, hp, TRUE, FALSE); | |
| 3238 | |
| 3239 buf->b_ml.ml_stack_top = stack_idx; /* truncate stack */ | |
| 1167 | 3240 /* fix line count for rest of blocks in the stack */ |
| 3241 if (buf->b_ml.ml_locked_lineadd != 0) | |
| 7 | 3242 { |
| 3243 ml_lineadd(buf, buf->b_ml.ml_locked_lineadd); | |
| 3244 buf->b_ml.ml_stack[buf->b_ml.ml_stack_top].ip_high += | |
| 1167 | 3245 buf->b_ml.ml_locked_lineadd; |
| 7 | 3246 } |
| 3247 ++(buf->b_ml.ml_stack_top); | |
| 3248 | |
| 3249 break; | |
| 3250 } | |
| 3251 } | |
| 3252 CHECK(stack_idx < 0, _("deleted block 1?")); | |
| 3253 } | |
| 3254 else | |
| 3255 { | |
| 3256 /* | |
| 3257 * delete the text by moving the next lines forwards | |
| 3258 */ | |
| 3259 text_start = dp->db_txt_start; | |
| 3260 mch_memmove((char *)dp + text_start + line_size, | |
| 3261 (char *)dp + text_start, (size_t)(line_start - text_start)); | |
| 3262 | |
| 3263 /* | |
| 3264 * delete the index by moving the next indexes backwards | |
| 3265 * Adjust the indexes for the text movement. | |
| 3266 */ | |
| 3267 for (i = idx; i < count - 1; ++i) | |
| 3268 dp->db_index[i] = dp->db_index[i + 1] + line_size; | |
| 3269 | |
| 3270 dp->db_free += line_size + INDEX_SIZE; | |
| 3271 dp->db_txt_start += line_size; | |
| 3272 --(dp->db_line_count); | |
| 3273 | |
| 3274 /* | |
| 3275 * mark the block dirty and make sure it is in the file (for recovery) | |
| 3276 */ | |
| 3277 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 3278 } | |
| 3279 | |
| 3280 #ifdef FEAT_BYTEOFF | |
| 3281 ml_updatechunk(buf, lnum, line_size, ML_CHNK_DELLINE); | |
| 3282 #endif | |
| 3283 return OK; | |
| 3284 } | |
| 3285 | |
| 3286 /* | |
| 3287 * set the B_MARKED flag for line 'lnum' | |
| 3288 */ | |
| 3289 void | |
|
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diff
changeset
|
3290 ml_setmarked(linenr_T lnum) |
| 7 | 3291 { |
| 3292 bhdr_T *hp; | |
| 3293 DATA_BL *dp; | |
| 3294 /* invalid line number */ | |
| 3295 if (lnum < 1 || lnum > curbuf->b_ml.ml_line_count | |
| 3296 || curbuf->b_ml.ml_mfp == NULL) | |
| 3297 return; /* give error message? */ | |
| 3298 | |
| 3299 if (lowest_marked == 0 || lowest_marked > lnum) | |
| 3300 lowest_marked = lnum; | |
| 3301 | |
| 3302 /* | |
| 3303 * find the data block containing the line | |
| 3304 * This also fills the stack with the blocks from the root to the data block | |
| 3305 * This also releases any locked block. | |
| 3306 */ | |
| 3307 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
| 3308 return; /* give error message? */ | |
| 3309 | |
| 3310 dp = (DATA_BL *)(hp->bh_data); | |
| 3311 dp->db_index[lnum - curbuf->b_ml.ml_locked_low] |= DB_MARKED; | |
| 3312 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 3313 } | |
| 3314 | |
| 3315 /* | |
| 3316 * find the first line with its B_MARKED flag set | |
| 3317 */ | |
| 3318 linenr_T | |
|
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diff
changeset
|
3319 ml_firstmarked(void) |
| 7 | 3320 { |
| 3321 bhdr_T *hp; | |
| 3322 DATA_BL *dp; | |
| 3323 linenr_T lnum; | |
| 3324 int i; | |
| 3325 | |
| 3326 if (curbuf->b_ml.ml_mfp == NULL) | |
| 3327 return (linenr_T) 0; | |
| 3328 | |
| 3329 /* | |
| 3330 * The search starts with lowest_marked line. This is the last line where | |
| 3331 * a mark was found, adjusted by inserting/deleting lines. | |
| 3332 */ | |
| 3333 for (lnum = lowest_marked; lnum <= curbuf->b_ml.ml_line_count; ) | |
| 3334 { | |
| 3335 /* | |
| 3336 * Find the data block containing the line. | |
| 3337 * This also fills the stack with the blocks from the root to the data | |
| 3338 * block This also releases any locked block. | |
| 3339 */ | |
| 3340 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
| 3341 return (linenr_T)0; /* give error message? */ | |
| 3342 | |
| 3343 dp = (DATA_BL *)(hp->bh_data); | |
| 3344 | |
| 3345 for (i = lnum - curbuf->b_ml.ml_locked_low; | |
| 3346 lnum <= curbuf->b_ml.ml_locked_high; ++i, ++lnum) | |
| 3347 if ((dp->db_index[i]) & DB_MARKED) | |
| 3348 { | |
| 3349 (dp->db_index[i]) &= DB_INDEX_MASK; | |
| 3350 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 3351 lowest_marked = lnum + 1; | |
| 3352 return lnum; | |
| 3353 } | |
| 3354 } | |
| 3355 | |
| 3356 return (linenr_T) 0; | |
| 3357 } | |
| 3358 | |
| 3359 /* | |
| 3360 * clear all DB_MARKED flags | |
| 3361 */ | |
| 3362 void | |
|
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diff
changeset
|
3363 ml_clearmarked(void) |
| 7 | 3364 { |
| 3365 bhdr_T *hp; | |
| 3366 DATA_BL *dp; | |
| 3367 linenr_T lnum; | |
| 3368 int i; | |
| 3369 | |
| 3370 if (curbuf->b_ml.ml_mfp == NULL) /* nothing to do */ | |
| 3371 return; | |
| 3372 | |
| 3373 /* | |
| 3374 * The search starts with line lowest_marked. | |
| 3375 */ | |
| 3376 for (lnum = lowest_marked; lnum <= curbuf->b_ml.ml_line_count; ) | |
| 3377 { | |
| 3378 /* | |
| 3379 * Find the data block containing the line. | |
| 3380 * This also fills the stack with the blocks from the root to the data | |
| 3381 * block and releases any locked block. | |
| 3382 */ | |
| 3383 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
| 3384 return; /* give error message? */ | |
| 3385 | |
| 3386 dp = (DATA_BL *)(hp->bh_data); | |
| 3387 | |
| 3388 for (i = lnum - curbuf->b_ml.ml_locked_low; | |
| 3389 lnum <= curbuf->b_ml.ml_locked_high; ++i, ++lnum) | |
| 3390 if ((dp->db_index[i]) & DB_MARKED) | |
| 3391 { | |
| 3392 (dp->db_index[i]) &= DB_INDEX_MASK; | |
| 3393 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 3394 } | |
| 3395 } | |
| 3396 | |
| 3397 lowest_marked = 0; | |
| 3398 return; | |
| 3399 } | |
| 3400 | |
| 3401 /* | |
| 3402 * flush ml_line if necessary | |
| 3403 */ | |
| 3404 static void | |
|
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diff
changeset
|
3405 ml_flush_line(buf_T *buf) |
| 7 | 3406 { |
| 3407 bhdr_T *hp; | |
| 3408 DATA_BL *dp; | |
| 3409 linenr_T lnum; | |
| 3410 char_u *new_line; | |
| 3411 char_u *old_line; | |
| 3412 colnr_T new_len; | |
| 3413 int old_len; | |
| 3414 int extra; | |
| 3415 int idx; | |
| 3416 int start; | |
| 3417 int count; | |
| 3418 int i; | |
|
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|
3419 static int entered = FALSE; |
| 7 | 3420 |
| 3421 if (buf->b_ml.ml_line_lnum == 0 || buf->b_ml.ml_mfp == NULL) | |
| 3422 return; /* nothing to do */ | |
| 3423 | |
| 3424 if (buf->b_ml.ml_flags & ML_LINE_DIRTY) | |
| 3425 { | |
|
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diff
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|
3426 /* This code doesn't work recursively, but Netbeans may call back here |
|
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|
3427 * when obtaining the cursor position. */ |
|
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diff
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|
3428 if (entered) |
|
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|
3429 return; |
|
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|
3430 entered = TRUE; |
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|
3431 |
| 7 | 3432 lnum = buf->b_ml.ml_line_lnum; |
| 3433 new_line = buf->b_ml.ml_line_ptr; | |
| 3434 | |
| 3435 hp = ml_find_line(buf, lnum, ML_FIND); | |
| 3436 if (hp == NULL) | |
|
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10042
diff
changeset
|
3437 IEMSGN(_("E320: Cannot find line %ld"), lnum); |
| 7 | 3438 else |
| 3439 { | |
| 3440 dp = (DATA_BL *)(hp->bh_data); | |
| 3441 idx = lnum - buf->b_ml.ml_locked_low; | |
| 3442 start = ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 3443 old_line = (char_u *)dp + start; | |
| 3444 if (idx == 0) /* line is last in block */ | |
| 3445 old_len = dp->db_txt_end - start; | |
| 3446 else /* text of previous line follows */ | |
| 3447 old_len = (dp->db_index[idx - 1] & DB_INDEX_MASK) - start; | |
| 3448 new_len = (colnr_T)STRLEN(new_line) + 1; | |
| 3449 extra = new_len - old_len; /* negative if lines gets smaller */ | |
| 3450 | |
| 3451 /* | |
| 3452 * if new line fits in data block, replace directly | |
| 3453 */ | |
| 3454 if ((int)dp->db_free >= extra) | |
| 3455 { | |
| 3456 /* if the length changes and there are following lines */ | |
| 3457 count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low + 1; | |
| 3458 if (extra != 0 && idx < count - 1) | |
| 3459 { | |
| 3460 /* move text of following lines */ | |
| 3461 mch_memmove((char *)dp + dp->db_txt_start - extra, | |
| 3462 (char *)dp + dp->db_txt_start, | |
| 3463 (size_t)(start - dp->db_txt_start)); | |
| 3464 | |
| 3465 /* adjust pointers of this and following lines */ | |
| 3466 for (i = idx + 1; i < count; ++i) | |
| 3467 dp->db_index[i] -= extra; | |
| 3468 } | |
| 3469 dp->db_index[idx] -= extra; | |
| 3470 | |
| 3471 /* adjust free space */ | |
| 3472 dp->db_free -= extra; | |
| 3473 dp->db_txt_start -= extra; | |
| 3474 | |
| 3475 /* copy new line into the data block */ | |
| 3476 mch_memmove(old_line - extra, new_line, (size_t)new_len); | |
| 3477 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 3478 #ifdef FEAT_BYTEOFF | |
| 3479 /* The else case is already covered by the insert and delete */ | |
| 3480 ml_updatechunk(buf, lnum, (long)extra, ML_CHNK_UPDLINE); | |
| 3481 #endif | |
| 3482 } | |
| 3483 else | |
| 3484 { | |
| 3485 /* | |
| 3486 * Cannot do it in one data block: Delete and append. | |
| 3487 * Append first, because ml_delete_int() cannot delete the | |
| 3488 * last line in a buffer, which causes trouble for a buffer | |
| 3489 * that has only one line. | |
| 3490 * Don't forget to copy the mark! | |
| 3491 */ | |
| 3492 /* How about handling errors??? */ | |
| 3493 (void)ml_append_int(buf, lnum, new_line, new_len, FALSE, | |
| 3494 (dp->db_index[idx] & DB_MARKED)); | |
| 3495 (void)ml_delete_int(buf, lnum, FALSE); | |
| 3496 } | |
| 3497 } | |
| 3498 vim_free(new_line); | |
|
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3499 |
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|
3500 entered = FALSE; |
| 7 | 3501 } |
| 3502 | |
| 3503 buf->b_ml.ml_line_lnum = 0; | |
| 3504 } | |
| 3505 | |
| 3506 /* | |
| 3507 * create a new, empty, data block | |
| 3508 */ | |
| 3509 static bhdr_T * | |
|
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diff
changeset
|
3510 ml_new_data(memfile_T *mfp, int negative, int page_count) |
| 7 | 3511 { |
| 3512 bhdr_T *hp; | |
| 3513 DATA_BL *dp; | |
| 3514 | |
| 3515 if ((hp = mf_new(mfp, negative, page_count)) == NULL) | |
| 3516 return NULL; | |
| 3517 | |
| 3518 dp = (DATA_BL *)(hp->bh_data); | |
| 3519 dp->db_id = DATA_ID; | |
| 3520 dp->db_txt_start = dp->db_txt_end = page_count * mfp->mf_page_size; | |
| 3521 dp->db_free = dp->db_txt_start - HEADER_SIZE; | |
| 3522 dp->db_line_count = 0; | |
| 3523 | |
| 3524 return hp; | |
| 3525 } | |
| 3526 | |
| 3527 /* | |
| 3528 * create a new, empty, pointer block | |
| 3529 */ | |
| 3530 static bhdr_T * | |
|
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diff
changeset
|
3531 ml_new_ptr(memfile_T *mfp) |
| 7 | 3532 { |
| 3533 bhdr_T *hp; | |
| 3534 PTR_BL *pp; | |
| 3535 | |
| 3536 if ((hp = mf_new(mfp, FALSE, 1)) == NULL) | |
| 3537 return NULL; | |
| 3538 | |
| 3539 pp = (PTR_BL *)(hp->bh_data); | |
| 3540 pp->pb_id = PTR_ID; | |
| 3541 pp->pb_count = 0; | |
|
2240
6b4879aea261
Add test for gettabvar() and settabvar().
Bram Moolenaar <bram@vim.org>
parents:
2221
diff
changeset
|
3542 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
|
3543 / sizeof(PTR_EN) + 1); |
| 7 | 3544 |
| 3545 return hp; | |
| 3546 } | |
| 3547 | |
| 3548 /* | |
| 3549 * lookup line 'lnum' in a memline | |
| 3550 * | |
| 3551 * action: if ML_DELETE or ML_INSERT the line count is updated while searching | |
| 3552 * if ML_FLUSH only flush a locked block | |
| 3553 * if ML_FIND just find the line | |
| 3554 * | |
| 3555 * If the block was found it is locked and put in ml_locked. | |
| 3556 * The stack is updated to lead to the locked block. The ip_high field in | |
| 3557 * the stack is updated to reflect the last line in the block AFTER the | |
| 3558 * insert or delete, also if the pointer block has not been updated yet. But | |
| 1167 | 3559 * if ml_locked != NULL ml_locked_lineadd must be added to ip_high. |
| 7 | 3560 * |
| 3561 * return: NULL for failure, pointer to block header otherwise | |
| 3562 */ | |
| 3563 static bhdr_T * | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3564 ml_find_line(buf_T *buf, linenr_T lnum, int action) |
| 7 | 3565 { |
| 3566 DATA_BL *dp; | |
| 3567 PTR_BL *pp; | |
| 3568 infoptr_T *ip; | |
| 3569 bhdr_T *hp; | |
| 3570 memfile_T *mfp; | |
| 3571 linenr_T t; | |
| 3572 blocknr_T bnum, bnum2; | |
| 3573 int dirty; | |
| 3574 linenr_T low, high; | |
| 3575 int top; | |
| 3576 int page_count; | |
| 3577 int idx; | |
| 3578 | |
| 3579 mfp = buf->b_ml.ml_mfp; | |
| 3580 | |
| 3581 /* | |
| 3582 * If there is a locked block check if the wanted line is in it. | |
| 3583 * If not, flush and release the locked block. | |
| 3584 * Don't do this for ML_INSERT_SAME, because the stack need to be updated. | |
| 3585 * Don't do this for ML_FLUSH, because we want to flush the locked block. | |
| 1066 | 3586 * Don't do this when 'swapfile' is reset, we want to load all the blocks. |
| 7 | 3587 */ |
| 3588 if (buf->b_ml.ml_locked) | |
| 3589 { | |
| 1066 | 3590 if (ML_SIMPLE(action) |
| 3591 && buf->b_ml.ml_locked_low <= lnum | |
| 3592 && buf->b_ml.ml_locked_high >= lnum | |
| 3593 && !mf_dont_release) | |
| 7 | 3594 { |
| 1066 | 3595 /* remember to update pointer blocks and stack later */ |
| 7 | 3596 if (action == ML_INSERT) |
| 3597 { | |
| 3598 ++(buf->b_ml.ml_locked_lineadd); | |
| 3599 ++(buf->b_ml.ml_locked_high); | |
| 3600 } | |
| 3601 else if (action == ML_DELETE) | |
| 3602 { | |
| 3603 --(buf->b_ml.ml_locked_lineadd); | |
| 3604 --(buf->b_ml.ml_locked_high); | |
| 3605 } | |
| 3606 return (buf->b_ml.ml_locked); | |
| 3607 } | |
| 3608 | |
| 3609 mf_put(mfp, buf->b_ml.ml_locked, buf->b_ml.ml_flags & ML_LOCKED_DIRTY, | |
| 3610 buf->b_ml.ml_flags & ML_LOCKED_POS); | |
| 3611 buf->b_ml.ml_locked = NULL; | |
| 3612 | |
| 1167 | 3613 /* |
| 3614 * If lines have been added or deleted in the locked block, need to | |
| 3615 * update the line count in pointer blocks. | |
| 3616 */ | |
| 3617 if (buf->b_ml.ml_locked_lineadd != 0) | |
| 7 | 3618 ml_lineadd(buf, buf->b_ml.ml_locked_lineadd); |
| 3619 } | |
| 3620 | |
| 3621 if (action == ML_FLUSH) /* nothing else to do */ | |
| 3622 return NULL; | |
| 3623 | |
| 3624 bnum = 1; /* start at the root of the tree */ | |
| 3625 page_count = 1; | |
| 3626 low = 1; | |
| 3627 high = buf->b_ml.ml_line_count; | |
| 3628 | |
| 3629 if (action == ML_FIND) /* first try stack entries */ | |
| 3630 { | |
| 3631 for (top = buf->b_ml.ml_stack_top - 1; top >= 0; --top) | |
| 3632 { | |
| 3633 ip = &(buf->b_ml.ml_stack[top]); | |
| 3634 if (ip->ip_low <= lnum && ip->ip_high >= lnum) | |
| 3635 { | |
| 3636 bnum = ip->ip_bnum; | |
| 3637 low = ip->ip_low; | |
| 3638 high = ip->ip_high; | |
| 3639 buf->b_ml.ml_stack_top = top; /* truncate stack at prev entry */ | |
| 3640 break; | |
| 3641 } | |
| 3642 } | |
| 3643 if (top < 0) | |
| 3644 buf->b_ml.ml_stack_top = 0; /* not found, start at the root */ | |
| 3645 } | |
| 3646 else /* ML_DELETE or ML_INSERT */ | |
| 3647 buf->b_ml.ml_stack_top = 0; /* start at the root */ | |
| 3648 | |
| 3649 /* | |
| 3650 * search downwards in the tree until a data block is found | |
| 3651 */ | |
| 3652 for (;;) | |
| 3653 { | |
| 3654 if ((hp = mf_get(mfp, bnum, page_count)) == NULL) | |
| 3655 goto error_noblock; | |
| 3656 | |
| 3657 /* | |
| 3658 * update high for insert/delete | |
| 3659 */ | |
| 3660 if (action == ML_INSERT) | |
| 3661 ++high; | |
| 3662 else if (action == ML_DELETE) | |
| 3663 --high; | |
| 3664 | |
| 3665 dp = (DATA_BL *)(hp->bh_data); | |
| 3666 if (dp->db_id == DATA_ID) /* data block */ | |
| 3667 { | |
| 3668 buf->b_ml.ml_locked = hp; | |
| 3669 buf->b_ml.ml_locked_low = low; | |
| 3670 buf->b_ml.ml_locked_high = high; | |
| 3671 buf->b_ml.ml_locked_lineadd = 0; | |
| 3672 buf->b_ml.ml_flags &= ~(ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 3673 return hp; | |
| 3674 } | |
| 3675 | |
| 3676 pp = (PTR_BL *)(dp); /* must be pointer block */ | |
| 3677 if (pp->pb_id != PTR_ID) | |
| 3678 { | |
|
10359
66f1b5bf3fa6
commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
3679 IEMSG(_("E317: pointer block id wrong")); |
| 7 | 3680 goto error_block; |
| 3681 } | |
| 3682 | |
| 3683 if ((top = ml_add_stack(buf)) < 0) /* add new entry to stack */ | |
| 3684 goto error_block; | |
| 3685 ip = &(buf->b_ml.ml_stack[top]); | |
| 3686 ip->ip_bnum = bnum; | |
| 3687 ip->ip_low = low; | |
| 3688 ip->ip_high = high; | |
| 3689 ip->ip_index = -1; /* index not known yet */ | |
| 3690 | |
| 3691 dirty = FALSE; | |
| 3692 for (idx = 0; idx < (int)pp->pb_count; ++idx) | |
| 3693 { | |
| 3694 t = pp->pb_pointer[idx].pe_line_count; | |
| 3695 CHECK(t == 0, _("pe_line_count is zero")); | |
| 3696 if ((low += t) > lnum) | |
| 3697 { | |
| 3698 ip->ip_index = idx; | |
| 3699 bnum = pp->pb_pointer[idx].pe_bnum; | |
| 3700 page_count = pp->pb_pointer[idx].pe_page_count; | |
| 3701 high = low - 1; | |
| 3702 low -= t; | |
| 3703 | |
| 3704 /* | |
| 3705 * a negative block number may have been changed | |
| 3706 */ | |
| 3707 if (bnum < 0) | |
| 3708 { | |
| 3709 bnum2 = mf_trans_del(mfp, bnum); | |
| 3710 if (bnum != bnum2) | |
| 3711 { | |
| 3712 bnum = bnum2; | |
| 3713 pp->pb_pointer[idx].pe_bnum = bnum; | |
| 3714 dirty = TRUE; | |
| 3715 } | |
| 3716 } | |
| 3717 | |
| 3718 break; | |
| 3719 } | |
| 3720 } | |
| 3721 if (idx >= (int)pp->pb_count) /* past the end: something wrong! */ | |
| 3722 { | |
| 3723 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
|
3724 IEMSGN(_("E322: line number out of range: %ld past the end"), |
| 7 | 3725 lnum - buf->b_ml.ml_line_count); |
| 3726 | |
| 3727 else | |
|
10359
66f1b5bf3fa6
commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
3728 IEMSGN(_("E323: line count wrong in block %ld"), bnum); |
| 7 | 3729 goto error_block; |
| 3730 } | |
| 3731 if (action == ML_DELETE) | |
| 3732 { | |
| 3733 pp->pb_pointer[idx].pe_line_count--; | |
| 3734 dirty = TRUE; | |
| 3735 } | |
| 3736 else if (action == ML_INSERT) | |
| 3737 { | |
| 3738 pp->pb_pointer[idx].pe_line_count++; | |
| 3739 dirty = TRUE; | |
| 3740 } | |
| 3741 mf_put(mfp, hp, dirty, FALSE); | |
| 3742 } | |
| 3743 | |
| 3744 error_block: | |
| 3745 mf_put(mfp, hp, FALSE, FALSE); | |
| 3746 error_noblock: | |
| 2267 | 3747 /* |
| 3748 * If action is ML_DELETE or ML_INSERT we have to correct the tree for | |
| 3749 * the incremented/decremented line counts, because there won't be a line | |
| 3750 * inserted/deleted after all. | |
| 3751 */ | |
| 7 | 3752 if (action == ML_DELETE) |
| 3753 ml_lineadd(buf, 1); | |
| 3754 else if (action == ML_INSERT) | |
| 3755 ml_lineadd(buf, -1); | |
| 3756 buf->b_ml.ml_stack_top = 0; | |
| 3757 return NULL; | |
| 3758 } | |
| 3759 | |
| 3760 /* | |
| 3761 * add an entry to the info pointer stack | |
| 3762 * | |
| 3763 * return -1 for failure, number of the new entry otherwise | |
| 3764 */ | |
| 3765 static int | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3766 ml_add_stack(buf_T *buf) |
| 7 | 3767 { |
| 3768 int top; | |
| 3769 infoptr_T *newstack; | |
| 3770 | |
| 3771 top = buf->b_ml.ml_stack_top; | |
| 3772 | |
| 2267 | 3773 /* may have to increase the stack size */ |
| 7 | 3774 if (top == buf->b_ml.ml_stack_size) |
| 3775 { | |
| 2267 | 3776 CHECK(top > 0, _("Stack size increases")); /* more than 5 levels??? */ |
| 7 | 3777 |
| 3778 newstack = (infoptr_T *)alloc((unsigned)sizeof(infoptr_T) * | |
| 3779 (buf->b_ml.ml_stack_size + STACK_INCR)); | |
| 3780 if (newstack == NULL) | |
| 3781 return -1; | |
| 6989 | 3782 if (top > 0) |
| 3783 mch_memmove(newstack, buf->b_ml.ml_stack, | |
| 1624 | 3784 (size_t)top * sizeof(infoptr_T)); |
| 7 | 3785 vim_free(buf->b_ml.ml_stack); |
| 3786 buf->b_ml.ml_stack = newstack; | |
| 3787 buf->b_ml.ml_stack_size += STACK_INCR; | |
| 3788 } | |
| 3789 | |
| 3790 buf->b_ml.ml_stack_top++; | |
| 3791 return top; | |
| 3792 } | |
| 3793 | |
| 3794 /* | |
| 3795 * Update the pointer blocks on the stack for inserted/deleted lines. | |
| 3796 * The stack itself is also updated. | |
| 3797 * | |
| 3798 * When a insert/delete line action fails, the line is not inserted/deleted, | |
| 3799 * but the pointer blocks have already been updated. That is fixed here by | |
| 3800 * walking through the stack. | |
| 3801 * | |
| 3802 * Count is the number of lines added, negative if lines have been deleted. | |
| 3803 */ | |
| 3804 static void | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3805 ml_lineadd(buf_T *buf, int count) |
| 7 | 3806 { |
| 3807 int idx; | |
| 3808 infoptr_T *ip; | |
| 3809 PTR_BL *pp; | |
| 3810 memfile_T *mfp = buf->b_ml.ml_mfp; | |
| 3811 bhdr_T *hp; | |
| 3812 | |
| 3813 for (idx = buf->b_ml.ml_stack_top - 1; idx >= 0; --idx) | |
| 3814 { | |
| 3815 ip = &(buf->b_ml.ml_stack[idx]); | |
| 3816 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
| 3817 break; | |
| 3818 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
| 3819 if (pp->pb_id != PTR_ID) | |
| 3820 { | |
| 3821 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
|
3822 IEMSG(_("E317: pointer block id wrong 2")); |
| 7 | 3823 break; |
| 3824 } | |
| 3825 pp->pb_pointer[ip->ip_index].pe_line_count += count; | |
| 3826 ip->ip_high += count; | |
| 3827 mf_put(mfp, hp, TRUE, FALSE); | |
| 3828 } | |
| 3829 } | |
| 3830 | |
|
2214
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
3831 #if defined(HAVE_READLINK) || defined(PROTO) |
| 594 | 3832 /* |
| 3833 * Resolve a symlink in the last component of a file name. | |
| 3834 * Note that f_resolve() does it for every part of the path, we don't do that | |
| 3835 * here. | |
| 3836 * If it worked returns OK and the resolved link in "buf[MAXPATHL]". | |
| 3837 * Otherwise returns FAIL. | |
| 3838 */ | |
|
2214
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
3839 int |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3840 resolve_symlink(char_u *fname, char_u *buf) |
| 594 | 3841 { |
| 3842 char_u tmp[MAXPATHL]; | |
| 3843 int ret; | |
| 3844 int depth = 0; | |
| 3845 | |
| 3846 if (fname == NULL) | |
| 3847 return FAIL; | |
| 3848 | |
| 3849 /* Put the result so far in tmp[], starting with the original name. */ | |
| 3850 vim_strncpy(tmp, fname, MAXPATHL - 1); | |
| 3851 | |
| 3852 for (;;) | |
| 3853 { | |
| 3854 /* Limit symlink depth to 100, catch recursive loops. */ | |
| 3855 if (++depth == 100) | |
| 3856 { | |
| 3857 EMSG2(_("E773: Symlink loop for \"%s\""), fname); | |
| 3858 return FAIL; | |
| 3859 } | |
| 3860 | |
| 3861 ret = readlink((char *)tmp, (char *)buf, MAXPATHL - 1); | |
| 3862 if (ret <= 0) | |
| 3863 { | |
| 619 | 3864 if (errno == EINVAL || errno == ENOENT) |
| 594 | 3865 { |
| 619 | 3866 /* Found non-symlink or not existing file, stop here. |
| 1855 | 3867 * When at the first level use the unmodified name, skip the |
| 594 | 3868 * call to vim_FullName(). */ |
| 3869 if (depth == 1) | |
| 3870 return FAIL; | |
| 3871 | |
| 3872 /* Use the resolved name in tmp[]. */ | |
| 3873 break; | |
| 3874 } | |
| 3875 | |
| 3876 /* There must be some error reading links, use original name. */ | |
| 3877 return FAIL; | |
| 3878 } | |
| 3879 buf[ret] = NUL; | |
| 3880 | |
| 3881 /* | |
| 3882 * Check whether the symlink is relative or absolute. | |
| 3883 * If it's relative, build a new path based on the directory | |
| 3884 * portion of the filename (if any) and the path the symlink | |
| 3885 * points to. | |
| 3886 */ | |
| 3887 if (mch_isFullName(buf)) | |
| 3888 STRCPY(tmp, buf); | |
| 3889 else | |
| 3890 { | |
| 3891 char_u *tail; | |
| 3892 | |
| 3893 tail = gettail(tmp); | |
| 3894 if (STRLEN(tail) + STRLEN(buf) >= MAXPATHL) | |
| 3895 return FAIL; | |
| 3896 STRCPY(tail, buf); | |
| 3897 } | |
| 3898 } | |
| 3899 | |
| 3900 /* | |
| 3901 * Try to resolve the full name of the file so that the swapfile name will | |
| 3902 * be consistent even when opening a relative symlink from different | |
| 3903 * working directories. | |
| 3904 */ | |
| 3905 return vim_FullName(tmp, buf, MAXPATHL, TRUE); | |
| 3906 } | |
| 3907 #endif | |
| 3908 | |
| 7 | 3909 /* |
| 460 | 3910 * Make swap file name out of the file name and a directory name. |
| 3911 * Returns pointer to allocated memory or NULL. | |
| 7 | 3912 */ |
| 460 | 3913 char_u * |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3914 makeswapname( |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3915 char_u *fname, |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3916 char_u *ffname UNUSED, |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3917 buf_T *buf, |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3918 char_u *dir_name) |
| 7 | 3919 { |
| 3920 char_u *r, *s; | |
|
2145
de0e7ca61893
updated for version 7.2.427
Bram Moolenaar <bram@zimbu.org>
parents:
2108
diff
changeset
|
3921 char_u *fname_res = fname; |
| 594 | 3922 #ifdef HAVE_READLINK |
| 3923 char_u fname_buf[MAXPATHL]; | |
| 3924 #endif | |
| 7 | 3925 |
| 3926 #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
|
3927 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
|
3928 |
|
d513b653f5d0
patch 8.0.0337: invalid memory access in :recover command
Christian Brabandt <cb@256bit.org>
parents:
10889
diff
changeset
|
3929 s = dir_name + len; |
|
d513b653f5d0
patch 8.0.0337: invalid memory access in :recover command
Christian Brabandt <cb@256bit.org>
parents:
10889
diff
changeset
|
3930 if (after_pathsep(dir_name, s) && len > 1 && s[-1] == s[-2]) |
| 7 | 3931 { /* Ends with '//', Use Full path */ |
| 3932 r = NULL; | |
| 460 | 3933 if ((s = make_percent_swname(dir_name, fname)) != NULL) |
| 7 | 3934 { |
| 3935 r = modname(s, (char_u *)".swp", FALSE); | |
| 3936 vim_free(s); | |
| 3937 } | |
| 3938 return r; | |
| 3939 } | |
| 3940 #endif | |
| 3941 | |
| 594 | 3942 #ifdef HAVE_READLINK |
| 3943 /* Expand symlink in the file name, so that we put the swap file with the | |
| 3944 * actual file instead of with the symlink. */ | |
| 3945 if (resolve_symlink(fname, fname_buf) == OK) | |
| 3946 fname_res = fname_buf; | |
| 3947 #endif | |
| 3948 | |
| 7 | 3949 r = buf_modname( |
| 3950 (buf->b_p_sn || buf->b_shortname), | |
| 594 | 3951 fname_res, |
| 7 | 3952 (char_u *) |
| 2823 | 3953 #if defined(VMS) |
| 7 | 3954 "_swp", |
| 3955 #else | |
| 3956 ".swp", | |
| 3957 #endif | |
| 3958 /* Prepend a '.' to the swap file name for the current directory. */ | |
|
8212
05b88224cea1
commit https://github.com/vim/vim/commit/48e330aff911be1c798c88a973af6437a8141fce
Christian Brabandt <cb@256bit.org>
parents:
7961
diff
changeset
|
3959 dir_name[0] == '.' && dir_name[1] == NUL); |
| 7 | 3960 if (r == NULL) /* out of memory */ |
| 3961 return NULL; | |
| 3962 | |
| 3963 s = get_file_in_dir(r, dir_name); | |
| 3964 vim_free(r); | |
| 3965 return s; | |
| 3966 } | |
| 3967 | |
| 3968 /* | |
| 3969 * Get file name to use for swap file or backup file. | |
| 3970 * Use the name of the edited file "fname" and an entry in the 'dir' or 'bdir' | |
| 3971 * option "dname". | |
| 3972 * - If "dname" is ".", return "fname" (swap file in dir of file). | |
| 3973 * - If "dname" starts with "./", insert "dname" in "fname" (swap file | |
| 3974 * relative to dir of file). | |
| 3975 * - Otherwise, prepend "dname" to the tail of "fname" (swap file in specific | |
| 3976 * dir). | |
| 3977 * | |
| 3978 * The return value is an allocated string and can be NULL. | |
| 3979 */ | |
| 3980 char_u * | |
|
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|
3981 get_file_in_dir( |
|
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3982 char_u *fname, |
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|
3983 char_u *dname) /* don't use "dirname", it is a global for Alpha */ |
| 7 | 3984 { |
| 3985 char_u *t; | |
| 3986 char_u *tail; | |
| 3987 char_u *retval; | |
| 3988 int save_char; | |
| 3989 | |
| 3990 tail = gettail(fname); | |
| 3991 | |
| 3992 if (dname[0] == '.' && dname[1] == NUL) | |
| 3993 retval = vim_strsave(fname); | |
| 3994 else if (dname[0] == '.' && vim_ispathsep(dname[1])) | |
| 3995 { | |
| 3996 if (tail == fname) /* no path before file name */ | |
| 3997 retval = concat_fnames(dname + 2, tail, TRUE); | |
| 3998 else | |
| 3999 { | |
| 4000 save_char = *tail; | |
| 4001 *tail = NUL; | |
| 4002 t = concat_fnames(fname, dname + 2, TRUE); | |
| 4003 *tail = save_char; | |
| 4004 if (t == NULL) /* out of memory */ | |
| 4005 retval = NULL; | |
| 4006 else | |
| 4007 { | |
| 4008 retval = concat_fnames(t, tail, TRUE); | |
| 4009 vim_free(t); | |
| 4010 } | |
| 4011 } | |
| 4012 } | |
| 4013 else | |
| 4014 retval = concat_fnames(dname, tail, TRUE); | |
| 4015 | |
| 5432 | 4016 #ifdef WIN3264 |
| 4017 if (retval != NULL) | |
|
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4018 for (t = gettail(retval); *t != NUL; MB_PTR_ADV(t)) |
| 5432 | 4019 if (*t == ':') |
| 4020 *t = '%'; | |
| 4021 #endif | |
| 4022 | |
| 7 | 4023 return retval; |
| 4024 } | |
| 4025 | |
|
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changeset
|
4026 static void attention_message(buf_T *buf, char_u *fname); |
| 580 | 4027 |
| 4028 /* | |
| 4029 * Print the ATTENTION message: info about an existing swap file. | |
| 4030 */ | |
| 4031 static void | |
|
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|
4032 attention_message( |
|
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|
4033 buf_T *buf, /* buffer being edited */ |
|
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diff
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|
4034 char_u *fname) /* swap file name */ |
| 580 | 4035 { |
|
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diff
changeset
|
4036 stat_T st; |
| 580 | 4037 time_t x, sx; |
| 1001 | 4038 char *p; |
| 580 | 4039 |
| 4040 ++no_wait_return; | |
| 4041 (void)EMSG(_("E325: ATTENTION")); | |
| 4042 MSG_PUTS(_("\nFound a swap file by the name \"")); | |
| 4043 msg_home_replace(fname); | |
| 4044 MSG_PUTS("\"\n"); | |
| 4045 sx = swapfile_info(fname); | |
| 4046 MSG_PUTS(_("While opening file \"")); | |
| 4047 msg_outtrans(buf->b_fname); | |
| 4048 MSG_PUTS("\"\n"); | |
| 4049 if (mch_stat((char *)buf->b_fname, &st) != -1) | |
| 4050 { | |
| 4051 MSG_PUTS(_(" dated: ")); | |
| 4052 x = st.st_mtime; /* Manx C can't do &st.st_mtime */ | |
| 1001 | 4053 p = ctime(&x); /* includes '\n' */ |
| 4054 if (p == NULL) | |
| 4055 MSG_PUTS("(invalid)\n"); | |
| 4056 else | |
| 4057 MSG_PUTS(p); | |
| 580 | 4058 if (sx != 0 && x > sx) |
| 4059 MSG_PUTS(_(" NEWER than swap file!\n")); | |
| 4060 } | |
| 4061 /* Some of these messages are long to allow translation to | |
| 4062 * other languages. */ | |
|
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Christian Brabandt <cb@256bit.org>
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diff
changeset
|
4063 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 | 4064 MSG_PUTS(_("(2) An edit session for this file crashed.\n")); |
| 580 | 4065 MSG_PUTS(_(" If this is the case, use \":recover\" or \"vim -r ")); |
| 4066 msg_outtrans(buf->b_fname); | |
| 4067 MSG_PUTS(_("\"\n to recover the changes (see \":help recovery\").\n")); | |
| 4068 MSG_PUTS(_(" If you did this already, delete the swap file \"")); | |
| 4069 msg_outtrans(fname); | |
| 4070 MSG_PUTS(_("\"\n to avoid this message.\n")); | |
| 4071 cmdline_row = msg_row; | |
| 4072 --no_wait_return; | |
| 4073 } | |
| 4074 | |
| 4075 #ifdef FEAT_AUTOCMD | |
|
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diff
changeset
|
4076 static int do_swapexists(buf_T *buf, char_u *fname); |
| 580 | 4077 |
| 4078 /* | |
| 4079 * Trigger the SwapExists autocommands. | |
| 4080 * Returns a value for equivalent to do_dialog() (see below): | |
| 4081 * 0: still need to ask for a choice | |
| 4082 * 1: open read-only | |
| 4083 * 2: edit anyway | |
| 4084 * 3: recover | |
| 4085 * 4: delete it | |
| 4086 * 5: quit | |
| 4087 * 6: abort | |
| 4088 */ | |
| 4089 static int | |
|
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diff
changeset
|
4090 do_swapexists(buf_T *buf, char_u *fname) |
| 580 | 4091 { |
| 4092 set_vim_var_string(VV_SWAPNAME, fname, -1); | |
| 4093 set_vim_var_string(VV_SWAPCHOICE, NULL, -1); | |
| 4094 | |
| 4095 /* Trigger SwapExists autocommands with <afile> set to the file being | |
| 1856 | 4096 * edited. Disallow changing directory here. */ |
| 4097 ++allbuf_lock; | |
| 580 | 4098 apply_autocmds(EVENT_SWAPEXISTS, buf->b_fname, NULL, FALSE, NULL); |
| 1856 | 4099 --allbuf_lock; |
| 580 | 4100 |
| 4101 set_vim_var_string(VV_SWAPNAME, NULL, -1); | |
| 4102 | |
| 4103 switch (*get_vim_var_str(VV_SWAPCHOICE)) | |
| 4104 { | |
| 4105 case 'o': return 1; | |
| 4106 case 'e': return 2; | |
| 4107 case 'r': return 3; | |
| 4108 case 'd': return 4; | |
| 4109 case 'q': return 5; | |
| 4110 case 'a': return 6; | |
| 4111 } | |
| 4112 | |
| 4113 return 0; | |
| 4114 } | |
| 4115 #endif | |
| 4116 | |
| 7 | 4117 /* |
| 4118 * Find out what name to use for the swap file for buffer 'buf'. | |
| 4119 * | |
| 4120 * Several names are tried to find one that does not exist | |
| 460 | 4121 * Returns the name in allocated memory or NULL. |
| 3158 | 4122 * When out of memory "dirp" is set to NULL. |
| 7 | 4123 * |
| 4124 * Note: If BASENAMELEN is not correct, you will get error messages for | |
|
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4125 * not being able to open the swap or undo file |
| 1856 | 4126 * Note: May trigger SwapExists autocmd, pointers may change! |
| 7 | 4127 */ |
| 4128 static char_u * | |
|
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4129 findswapname( |
|
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4130 buf_T *buf, |
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|
4131 char_u **dirp, /* pointer to list of directories */ |
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|
4132 char_u *old_fname) /* don't give warning for this file name */ |
| 7 | 4133 { |
| 4134 char_u *fname; | |
| 4135 int n; | |
| 4136 char_u *dir_name; | |
| 4137 #ifdef AMIGA | |
| 4138 BPTR fh; | |
| 4139 #endif | |
| 4140 int r; | |
| 5432 | 4141 char_u *buf_fname = buf->b_fname; |
| 7 | 4142 |
|
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|
4143 #if !defined(UNIX) |
| 7 | 4144 # define CREATE_DUMMY_FILE |
| 4145 FILE *dummyfd = NULL; | |
| 4146 | |
| 5432 | 4147 # ifdef WIN3264 |
| 4148 if (buf_fname != NULL && !mch_isFullName(buf_fname) | |
| 4149 && vim_strchr(gettail(buf_fname), ':')) | |
| 4150 { | |
| 4151 char_u *t; | |
| 4152 | |
| 4153 buf_fname = vim_strsave(buf_fname); | |
| 4154 if (buf_fname == NULL) | |
| 4155 buf_fname = buf->b_fname; | |
| 4156 else | |
|
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|
4157 for (t = gettail(buf_fname); *t != NUL; MB_PTR_ADV(t)) |
| 5432 | 4158 if (*t == ':') |
| 4159 *t = '%'; | |
| 4160 } | |
| 4161 # endif | |
| 4162 | |
|
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4163 /* |
|
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4164 * If we start editing a new file, e.g. "test.doc", which resides on an |
|
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|
4165 * MSDOS compatible filesystem, it is possible that the file |
|
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4166 * "test.doc.swp" which we create will be exactly the same file. To avoid |
|
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4167 * this problem we temporarily create "test.doc". Don't do this when the |
|
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4168 * check below for a 8.3 file name is used. |
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4169 */ |
| 5432 | 4170 if (!(buf->b_p_sn || buf->b_shortname) && buf_fname != NULL |
| 4171 && mch_getperm(buf_fname) < 0) | |
| 4172 dummyfd = mch_fopen((char *)buf_fname, "w"); | |
| 7 | 4173 #endif |
| 4174 | |
|
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4175 /* |
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4176 * Isolate a directory name from *dirp and put it in dir_name. |
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4177 * First allocate some memory to put the directory name in. |
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4178 */ |
| 7 | 4179 dir_name = alloc((unsigned)STRLEN(*dirp) + 1); |
| 3158 | 4180 if (dir_name == NULL) |
| 4181 *dirp = NULL; | |
| 4182 else | |
| 7 | 4183 (void)copy_option_part(dirp, dir_name, 31000, ","); |
| 4184 | |
|
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4185 /* |
|
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4186 * we try different names until we find one that does not exist yet |
|
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|
4187 */ |
| 7 | 4188 if (dir_name == NULL) /* out of memory */ |
| 4189 fname = NULL; | |
| 4190 else | |
| 5432 | 4191 fname = makeswapname(buf_fname, buf->b_ffname, buf, dir_name); |
| 7 | 4192 |
| 4193 for (;;) | |
| 4194 { | |
| 4195 if (fname == NULL) /* must be out of memory */ | |
| 4196 break; | |
| 4197 if ((n = (int)STRLEN(fname)) == 0) /* safety check */ | |
| 4198 { | |
| 4199 vim_free(fname); | |
| 4200 fname = NULL; | |
| 4201 break; | |
| 4202 } | |
|
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diff
changeset
|
4203 #if defined(UNIX) |
| 7 | 4204 /* |
| 4205 * Some systems have a MS-DOS compatible filesystem that use 8.3 character | |
| 4206 * file names. If this is the first try and the swap file name does not fit in | |
| 4207 * 8.3, detect if this is the case, set shortname and try again. | |
| 4208 */ | |
| 4209 if (fname[n - 2] == 'w' && fname[n - 1] == 'p' | |
| 4210 && !(buf->b_p_sn || buf->b_shortname)) | |
| 4211 { | |
| 4212 char_u *tail; | |
| 4213 char_u *fname2; | |
|
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diff
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|
4214 stat_T s1, s2; |
| 7 | 4215 int f1, f2; |
| 4216 int created1 = FALSE, created2 = FALSE; | |
| 4217 int same = FALSE; | |
| 4218 | |
| 4219 /* | |
| 4220 * Check if swapfile name does not fit in 8.3: | |
| 4221 * It either contains two dots, is longer than 8 chars, or starts | |
| 4222 * with a dot. | |
| 4223 */ | |
| 5432 | 4224 tail = gettail(buf_fname); |
| 7 | 4225 if ( vim_strchr(tail, '.') != NULL |
| 4226 || STRLEN(tail) > (size_t)8 | |
| 4227 || *gettail(fname) == '.') | |
| 4228 { | |
| 4229 fname2 = alloc(n + 2); | |
| 4230 if (fname2 != NULL) | |
| 4231 { | |
| 4232 STRCPY(fname2, fname); | |
| 4233 /* if fname == "xx.xx.swp", fname2 = "xx.xx.swx" | |
| 4234 * if fname == ".xx.swp", fname2 = ".xx.swpx" | |
| 4235 * if fname == "123456789.swp", fname2 = "12345678x.swp" | |
| 4236 */ | |
| 4237 if (vim_strchr(tail, '.') != NULL) | |
| 4238 fname2[n - 1] = 'x'; | |
| 4239 else if (*gettail(fname) == '.') | |
| 4240 { | |
| 4241 fname2[n] = 'x'; | |
| 4242 fname2[n + 1] = NUL; | |
| 4243 } | |
| 4244 else | |
| 4245 fname2[n - 5] += 1; | |
| 4246 /* | |
| 4247 * may need to create the files to be able to use mch_stat() | |
| 4248 */ | |
| 4249 f1 = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
| 4250 if (f1 < 0) | |
| 4251 { | |
| 4252 f1 = mch_open_rw((char *)fname, | |
| 4253 O_RDWR|O_CREAT|O_EXCL|O_EXTRA); | |
| 4254 created1 = TRUE; | |
| 4255 } | |
| 4256 if (f1 >= 0) | |
| 4257 { | |
| 4258 f2 = mch_open((char *)fname2, O_RDONLY | O_EXTRA, 0); | |
| 4259 if (f2 < 0) | |
| 4260 { | |
| 4261 f2 = mch_open_rw((char *)fname2, | |
| 4262 O_RDWR|O_CREAT|O_EXCL|O_EXTRA); | |
| 4263 created2 = TRUE; | |
| 4264 } | |
| 4265 if (f2 >= 0) | |
| 4266 { | |
| 4267 /* | |
| 4268 * Both files exist now. If mch_stat() returns the | |
| 4269 * same device and inode they are the same file. | |
| 4270 */ | |
| 4271 if (mch_fstat(f1, &s1) != -1 | |
| 4272 && mch_fstat(f2, &s2) != -1 | |
| 4273 && s1.st_dev == s2.st_dev | |
| 4274 && s1.st_ino == s2.st_ino) | |
| 4275 same = TRUE; | |
| 4276 close(f2); | |
| 4277 if (created2) | |
| 4278 mch_remove(fname2); | |
| 4279 } | |
| 4280 close(f1); | |
| 4281 if (created1) | |
| 4282 mch_remove(fname); | |
| 4283 } | |
| 4284 vim_free(fname2); | |
| 4285 if (same) | |
| 4286 { | |
| 4287 buf->b_shortname = TRUE; | |
| 4288 vim_free(fname); | |
| 5432 | 4289 fname = makeswapname(buf_fname, buf->b_ffname, |
| 460 | 4290 buf, dir_name); |
| 7 | 4291 continue; /* try again with b_shortname set */ |
| 4292 } | |
| 4293 } | |
| 4294 } | |
| 4295 } | |
| 4296 #endif | |
| 4297 /* | |
| 4298 * check if the swapfile already exists | |
| 4299 */ | |
| 4300 if (mch_getperm(fname) < 0) /* it does not exist */ | |
| 4301 { | |
| 4302 #ifdef HAVE_LSTAT | |
|
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|
4303 stat_T sb; |
| 7 | 4304 |
| 4305 /* | |
| 4306 * Extra security check: When a swap file is a symbolic link, this | |
| 4307 * is most likely a symlink attack. | |
| 4308 */ | |
| 4309 if (mch_lstat((char *)fname, &sb) < 0) | |
| 4310 #else | |
| 4311 # ifdef AMIGA | |
| 4312 fh = Open((UBYTE *)fname, (long)MODE_NEWFILE); | |
| 4313 /* | |
| 4314 * on the Amiga mch_getperm() will return -1 when the file exists | |
| 4315 * but is being used by another program. This happens if you edit | |
| 4316 * a file twice. | |
| 4317 */ | |
| 4318 if (fh != (BPTR)NULL) /* can open file, OK */ | |
| 4319 { | |
| 4320 Close(fh); | |
| 4321 mch_remove(fname); | |
| 4322 break; | |
| 4323 } | |
| 4324 if (IoErr() != ERROR_OBJECT_IN_USE | |
| 4325 && IoErr() != ERROR_OBJECT_EXISTS) | |
| 4326 # endif | |
| 4327 #endif | |
| 4328 break; | |
| 4329 } | |
| 4330 | |
| 4331 /* | |
| 4332 * A file name equal to old_fname is OK to use. | |
| 4333 */ | |
| 4334 if (old_fname != NULL && fnamecmp(fname, old_fname) == 0) | |
| 4335 break; | |
| 4336 | |
| 4337 /* | |
| 4338 * get here when file already exists | |
| 4339 */ | |
| 4340 if (fname[n - 2] == 'w' && fname[n - 1] == 'p') /* first try */ | |
| 4341 { | |
| 4342 /* | |
| 4343 * on MS-DOS compatible filesystems (e.g. messydos) file.doc.swp | |
| 4344 * and file.doc are the same file. To guess if this problem is | |
| 4345 * present try if file.doc.swx exists. If it does, we set | |
| 4346 * buf->b_shortname and try file_doc.swp (dots replaced by | |
| 4347 * underscores for this file), and try again. If it doesn't we | |
| 4348 * assume that "file.doc.swp" already exists. | |
| 4349 */ | |
| 4350 if (!(buf->b_p_sn || buf->b_shortname)) /* not tried yet */ | |
| 4351 { | |
| 4352 fname[n - 1] = 'x'; | |
| 4353 r = mch_getperm(fname); /* try "file.swx" */ | |
| 4354 fname[n - 1] = 'p'; | |
| 4355 if (r >= 0) /* "file.swx" seems to exist */ | |
| 4356 { | |
| 4357 buf->b_shortname = TRUE; | |
| 4358 vim_free(fname); | |
| 5432 | 4359 fname = makeswapname(buf_fname, buf->b_ffname, |
| 460 | 4360 buf, dir_name); |
| 7 | 4361 continue; /* try again with '.' replaced with '_' */ |
| 4362 } | |
| 4363 } | |
| 4364 /* | |
| 4365 * If we get here the ".swp" file really exists. | |
| 4366 * Give an error message, unless recovering, no file name, we are | |
| 4367 * viewing a help file or when the path of the file is different | |
| 4368 * (happens when all .swp files are in one directory). | |
| 4369 */ | |
| 5432 | 4370 if (!recoverymode && buf_fname != NULL |
| 43 | 4371 && !buf->b_help && !(buf->b_flags & BF_DUMMY)) |
| 7 | 4372 { |
| 4373 int fd; | |
| 4374 struct block0 b0; | |
| 4375 int differ = FALSE; | |
| 4376 | |
| 4377 /* | |
| 4378 * Try to read block 0 from the swap file to get the original | |
| 4379 * file name (and inode number). | |
| 4380 */ | |
| 4381 fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
| 4382 if (fd >= 0) | |
| 4383 { | |
| 2664 | 4384 if (read_eintr(fd, &b0, sizeof(b0)) == sizeof(b0)) |
| 7 | 4385 { |
| 4386 /* | |
| 39 | 4387 * If the swapfile has the same directory as the |
| 4388 * buffer don't compare the directory names, they can | |
| 4389 * have a different mountpoint. | |
| 7 | 4390 */ |
| 39 | 4391 if (b0.b0_flags & B0_SAME_DIR) |
| 4392 { | |
| 4393 if (fnamecmp(gettail(buf->b_ffname), | |
| 4394 gettail(b0.b0_fname)) != 0 | |
| 4395 || !same_directory(fname, buf->b_ffname)) | |
| 594 | 4396 { |
| 4397 #ifdef CHECK_INODE | |
| 4398 /* Symlinks may point to the same file even | |
| 4399 * when the name differs, need to check the | |
| 4400 * inode too. */ | |
| 4401 expand_env(b0.b0_fname, NameBuff, MAXPATHL); | |
| 4402 if (fnamecmp_ino(buf->b_ffname, NameBuff, | |
| 4403 char_to_long(b0.b0_ino))) | |
| 4404 #endif | |
| 4405 differ = TRUE; | |
| 4406 } | |
| 39 | 4407 } |
| 4408 else | |
| 4409 { | |
| 4410 /* | |
| 4411 * The name in the swap file may be | |
| 4412 * "~user/path/file". Expand it first. | |
| 4413 */ | |
| 4414 expand_env(b0.b0_fname, NameBuff, MAXPATHL); | |
| 7 | 4415 #ifdef CHECK_INODE |
| 39 | 4416 if (fnamecmp_ino(buf->b_ffname, NameBuff, |
| 594 | 4417 char_to_long(b0.b0_ino))) |
| 39 | 4418 differ = TRUE; |
| 7 | 4419 #else |
| 39 | 4420 if (fnamecmp(NameBuff, buf->b_ffname) != 0) |
| 4421 differ = TRUE; | |
| 7 | 4422 #endif |
| 39 | 4423 } |
| 7 | 4424 } |
| 4425 close(fd); | |
| 4426 } | |
| 4427 | |
| 4428 /* give the ATTENTION message when there is an old swap file | |
| 4429 * for the current file, and the buffer was not recovered. */ | |
| 4430 if (differ == FALSE && !(curbuf->b_flags & BF_RECOVERED) | |
| 4431 && vim_strchr(p_shm, SHM_ATTENTION) == NULL) | |
| 4432 { | |
| 580 | 4433 #if defined(HAS_SWAP_EXISTS_ACTION) |
| 4434 int choice = 0; | |
| 4435 #endif | |
| 7 | 4436 #ifdef CREATE_DUMMY_FILE |
| 4437 int did_use_dummy = FALSE; | |
| 4438 | |
| 4439 /* Avoid getting a warning for the file being created | |
| 4440 * outside of Vim, it was created at the start of this | |
| 4441 * function. Delete the file now, because Vim might exit | |
| 4442 * here if the window is closed. */ | |
| 4443 if (dummyfd != NULL) | |
| 4444 { | |
| 4445 fclose(dummyfd); | |
| 4446 dummyfd = NULL; | |
| 5432 | 4447 mch_remove(buf_fname); |
| 7 | 4448 did_use_dummy = TRUE; |
| 4449 } | |
| 4450 #endif | |
| 4451 | |
|
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b2aada04d84e
commit https://github.com/vim/vim/commit/a06ecab7a5159e744448ace731036f0dc5f87dd4
Christian Brabandt <cb@256bit.org>
parents:
9387
diff
changeset
|
4452 #if (defined(UNIX) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)) |
| 7 | 4453 process_still_running = FALSE; |
| 4454 #endif | |
| 580 | 4455 #ifdef FEAT_AUTOCMD |
| 4456 /* | |
| 4457 * If there is an SwapExists autocommand and we can handle | |
| 4458 * the response, trigger it. It may return 0 to ask the | |
| 4459 * user anyway. | |
| 4460 */ | |
| 4461 if (swap_exists_action != SEA_NONE | |
| 5432 | 4462 && has_autocmd(EVENT_SWAPEXISTS, buf_fname, buf)) |
| 580 | 4463 choice = do_swapexists(buf, fname); |
| 4464 | |
| 4465 if (choice == 0) | |
| 4466 #endif | |
| 7 | 4467 { |
| 580 | 4468 #ifdef FEAT_GUI |
| 4469 /* If we are supposed to start the GUI but it wasn't | |
| 4470 * completely started yet, start it now. This makes | |
| 4471 * the messages displayed in the Vim window when | |
| 4472 * loading a session from the .gvimrc file. */ | |
| 4473 if (gui.starting && !gui.in_use) | |
| 4474 gui_start(); | |
| 4475 #endif | |
| 4476 /* Show info about the existing swap file. */ | |
| 4477 attention_message(buf, fname); | |
| 4478 | |
| 4479 /* We don't want a 'q' typed at the more-prompt | |
| 4480 * interrupt loading a file. */ | |
| 4481 got_int = FALSE; | |
| 7 | 4482 } |
| 4483 | |
| 4484 #if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) | |
| 580 | 4485 if (swap_exists_action != SEA_NONE && choice == 0) |
| 7 | 4486 { |
| 4487 char_u *name; | |
| 4488 | |
| 4489 name = alloc((unsigned)(STRLEN(fname) | |
| 4490 + STRLEN(_("Swap file \"")) | |
| 4491 + STRLEN(_("\" already exists!")) + 5)); | |
| 4492 if (name != NULL) | |
| 4493 { | |
| 4494 STRCPY(name, _("Swap file \"")); | |
| 4495 home_replace(NULL, fname, name + STRLEN(name), | |
| 4496 1000, TRUE); | |
| 4497 STRCAT(name, _("\" already exists!")); | |
| 4498 } | |
| 580 | 4499 choice = do_dialog(VIM_WARNING, |
| 7 | 4500 (char_u *)_("VIM - ATTENTION"), |
| 4501 name == NULL | |
| 4502 ? (char_u *)_("Swap file already exists!") | |
| 4503 : name, | |
|
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b2aada04d84e
commit https://github.com/vim/vim/commit/a06ecab7a5159e744448ace731036f0dc5f87dd4
Christian Brabandt <cb@256bit.org>
parents:
9387
diff
changeset
|
4504 # if defined(UNIX) || defined(VMS) |
| 7 | 4505 process_still_running |
| 4506 ? (char_u *)_("&Open Read-Only\n&Edit anyway\n&Recover\n&Quit\n&Abort") : | |
| 4507 # endif | |
| 2684 | 4508 (char_u *)_("&Open Read-Only\n&Edit anyway\n&Recover\n&Delete it\n&Quit\n&Abort"), 1, NULL, FALSE); |
| 580 | 4509 |
|
9536
b2aada04d84e
commit https://github.com/vim/vim/commit/a06ecab7a5159e744448ace731036f0dc5f87dd4
Christian Brabandt <cb@256bit.org>
parents:
9387
diff
changeset
|
4510 # if defined(UNIX) || defined(VMS) |
| 580 | 4511 if (process_still_running && choice >= 4) |
| 4512 choice++; /* Skip missing "Delete it" button */ | |
| 4513 # endif | |
| 4514 vim_free(name); | |
| 4515 | |
| 4516 /* pretend screen didn't scroll, need redraw anyway */ | |
| 4517 msg_scrolled = 0; | |
| 4518 redraw_all_later(NOT_VALID); | |
| 4519 } | |
| 4520 #endif | |
| 4521 | |
| 4522 #if defined(HAS_SWAP_EXISTS_ACTION) | |
| 4523 if (choice > 0) | |
| 4524 { | |
| 4525 switch (choice) | |
| 7 | 4526 { |
| 4527 case 1: | |
| 4528 buf->b_p_ro = TRUE; | |
| 4529 break; | |
| 4530 case 2: | |
| 4531 break; | |
| 4532 case 3: | |
| 4533 swap_exists_action = SEA_RECOVER; | |
| 4534 break; | |
| 4535 case 4: | |
| 580 | 4536 mch_remove(fname); |
| 4537 break; | |
| 4538 case 5: | |
| 7 | 4539 swap_exists_action = SEA_QUIT; |
| 4540 break; | |
| 580 | 4541 case 6: |
| 7 | 4542 swap_exists_action = SEA_QUIT; |
| 4543 got_int = TRUE; | |
| 4544 break; | |
| 4545 } | |
| 4546 | |
| 4547 /* If the file was deleted this fname can be used. */ | |
| 4548 if (mch_getperm(fname) < 0) | |
| 4549 break; | |
| 4550 } | |
| 4551 else | |
| 4552 #endif | |
| 4553 { | |
| 4554 MSG_PUTS("\n"); | |
| 625 | 4555 if (msg_silent == 0) |
| 4556 /* call wait_return() later */ | |
| 4557 need_wait_return = TRUE; | |
| 7 | 4558 } |
| 4559 | |
| 4560 #ifdef CREATE_DUMMY_FILE | |
| 4561 /* Going to try another name, need the dummy file again. */ | |
| 4562 if (did_use_dummy) | |
| 5432 | 4563 dummyfd = mch_fopen((char *)buf_fname, "w"); |
| 7 | 4564 #endif |
| 4565 } | |
| 4566 } | |
| 4567 } | |
| 4568 | |
| 4569 /* | |
| 4570 * Change the ".swp" extension to find another file that can be used. | |
| 4571 * First decrement the last char: ".swo", ".swn", etc. | |
| 4572 * If that still isn't enough decrement the last but one char: ".svz" | |
| 9 | 4573 * Can happen when editing many "No Name" buffers. |
| 7 | 4574 */ |
| 4575 if (fname[n - 1] == 'a') /* ".s?a" */ | |
| 4576 { | |
| 4577 if (fname[n - 2] == 'a') /* ".saa": tried enough, give up */ | |
| 4578 { | |
| 4579 EMSG(_("E326: Too many swap files found")); | |
| 4580 vim_free(fname); | |
| 4581 fname = NULL; | |
| 4582 break; | |
| 4583 } | |
| 4584 --fname[n - 2]; /* ".svz", ".suz", etc. */ | |
| 4585 fname[n - 1] = 'z' + 1; | |
| 4586 } | |
| 4587 --fname[n - 1]; /* ".swo", ".swn", etc. */ | |
| 4588 } | |
| 4589 | |
| 4590 vim_free(dir_name); | |
| 4591 #ifdef CREATE_DUMMY_FILE | |
| 4592 if (dummyfd != NULL) /* file has been created temporarily */ | |
| 4593 { | |
| 4594 fclose(dummyfd); | |
| 5432 | 4595 mch_remove(buf_fname); |
| 7 | 4596 } |
| 4597 #endif | |
| 5432 | 4598 #ifdef WIN3264 |
| 4599 if (buf_fname != buf->b_fname) | |
| 4600 vim_free(buf_fname); | |
| 4601 #endif | |
| 7 | 4602 return fname; |
| 4603 } | |
| 4604 | |
| 4605 static int | |
|
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41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4606 b0_magic_wrong(ZERO_BL *b0p) |
| 7 | 4607 { |
| 4608 return (b0p->b0_magic_long != (long)B0_MAGIC_LONG | |
| 4609 || b0p->b0_magic_int != (int)B0_MAGIC_INT | |
| 4610 || b0p->b0_magic_short != (short)B0_MAGIC_SHORT | |
| 4611 || b0p->b0_magic_char != B0_MAGIC_CHAR); | |
| 4612 } | |
| 4613 | |
| 4614 #ifdef CHECK_INODE | |
| 4615 /* | |
| 4616 * Compare current file name with file name from swap file. | |
| 4617 * Try to use inode numbers when possible. | |
| 4618 * Return non-zero when files are different. | |
| 4619 * | |
| 4620 * When comparing file names a few things have to be taken into consideration: | |
| 4621 * - When working over a network the full path of a file depends on the host. | |
| 4622 * We check the inode number if possible. It is not 100% reliable though, | |
| 4623 * because the device number cannot be used over a network. | |
| 4624 * - When a file does not exist yet (editing a new file) there is no inode | |
| 4625 * number. | |
| 4626 * - The file name in a swap file may not be valid on the current host. The | |
| 4627 * "~user" form is used whenever possible to avoid this. | |
| 4628 * | |
| 4629 * This is getting complicated, let's make a table: | |
| 4630 * | |
| 4631 * ino_c ino_s fname_c fname_s differ = | |
| 4632 * | |
| 4633 * both files exist -> compare inode numbers: | |
| 4634 * != 0 != 0 X X ino_c != ino_s | |
| 4635 * | |
| 4636 * inode number(s) unknown, file names available -> compare file names | |
| 4637 * == 0 X OK OK fname_c != fname_s | |
| 4638 * X == 0 OK OK fname_c != fname_s | |
| 4639 * | |
| 4640 * current file doesn't exist, file for swap file exist, file name(s) not | |
| 4641 * available -> probably different | |
| 4642 * == 0 != 0 FAIL X TRUE | |
| 4643 * == 0 != 0 X FAIL TRUE | |
| 4644 * | |
| 4645 * current file exists, inode for swap unknown, file name(s) not | |
| 4646 * available -> probably different | |
| 4647 * != 0 == 0 FAIL X TRUE | |
| 4648 * != 0 == 0 X FAIL TRUE | |
| 4649 * | |
| 4650 * current file doesn't exist, inode for swap unknown, one file name not | |
| 4651 * available -> probably different | |
| 4652 * == 0 == 0 FAIL OK TRUE | |
| 4653 * == 0 == 0 OK FAIL TRUE | |
| 4654 * | |
| 4655 * current file doesn't exist, inode for swap unknown, both file names not | |
| 4656 * available -> probably same file | |
| 4657 * == 0 == 0 FAIL FAIL FALSE | |
| 4658 * | |
| 4659 * Note that when the ino_t is 64 bits, only the last 32 will be used. This | |
| 4660 * can't be changed without making the block 0 incompatible with 32 bit | |
| 4661 * versions. | |
| 4662 */ | |
| 4663 | |
| 4664 static int | |
|
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41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4665 fnamecmp_ino( |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4666 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
|
4667 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
|
4668 long ino_block0) |
| 7 | 4669 { |
|
9387
f094d4085014
commit https://github.com/vim/vim/commit/8767f52fbfd4f053ce00a978227c95f1d7d323fe
Christian Brabandt <cb@256bit.org>
parents:
9295
diff
changeset
|
4670 stat_T st; |
| 7 | 4671 ino_t ino_c = 0; /* ino of current file */ |
| 4672 ino_t ino_s; /* ino of file from swap file */ | |
| 4673 char_u buf_c[MAXPATHL]; /* full path of fname_c */ | |
| 4674 char_u buf_s[MAXPATHL]; /* full path of fname_s */ | |
| 4675 int retval_c; /* flag: buf_c valid */ | |
| 4676 int retval_s; /* flag: buf_s valid */ | |
| 4677 | |
| 4678 if (mch_stat((char *)fname_c, &st) == 0) | |
| 4679 ino_c = (ino_t)st.st_ino; | |
| 4680 | |
| 4681 /* | |
| 4682 * First we try to get the inode from the file name, because the inode in | |
| 4683 * the swap file may be outdated. If that fails (e.g. this path is not | |
| 4684 * valid on this machine), use the inode from block 0. | |
| 4685 */ | |
| 4686 if (mch_stat((char *)fname_s, &st) == 0) | |
| 4687 ino_s = (ino_t)st.st_ino; | |
| 4688 else | |
| 4689 ino_s = (ino_t)ino_block0; | |
| 4690 | |
| 4691 if (ino_c && ino_s) | |
| 4692 return (ino_c != ino_s); | |
| 4693 | |
| 4694 /* | |
| 4695 * One of the inode numbers is unknown, try a forced vim_FullName() and | |
| 4696 * compare the file names. | |
| 4697 */ | |
| 4698 retval_c = vim_FullName(fname_c, buf_c, MAXPATHL, TRUE); | |
| 4699 retval_s = vim_FullName(fname_s, buf_s, MAXPATHL, TRUE); | |
| 4700 if (retval_c == OK && retval_s == OK) | |
| 4701 return (STRCMP(buf_c, buf_s) != 0); | |
| 4702 | |
| 4703 /* | |
| 4704 * Can't compare inodes or file names, guess that the files are different, | |
| 4705 * unless both appear not to exist at all. | |
| 4706 */ | |
| 4707 if (ino_s == 0 && ino_c == 0 && retval_c == FAIL && retval_s == FAIL) | |
| 4708 return FALSE; | |
| 4709 return TRUE; | |
| 4710 } | |
| 4711 #endif /* CHECK_INODE */ | |
| 4712 | |
| 4713 /* | |
| 4714 * Move a long integer into a four byte character array. | |
| 4715 * Used for machine independency in block zero. | |
| 4716 */ | |
| 4717 static void | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4718 long_to_char(long n, char_u *s) |
| 7 | 4719 { |
| 4720 s[0] = (char_u)(n & 0xff); | |
| 4721 n = (unsigned)n >> 8; | |
| 4722 s[1] = (char_u)(n & 0xff); | |
| 4723 n = (unsigned)n >> 8; | |
| 4724 s[2] = (char_u)(n & 0xff); | |
| 4725 n = (unsigned)n >> 8; | |
| 4726 s[3] = (char_u)(n & 0xff); | |
| 4727 } | |
| 4728 | |
| 4729 static long | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4730 char_to_long(char_u *s) |
| 7 | 4731 { |
| 4732 long retval; | |
| 4733 | |
| 4734 retval = s[3]; | |
| 4735 retval <<= 8; | |
| 4736 retval |= s[2]; | |
| 4737 retval <<= 8; | |
| 4738 retval |= s[1]; | |
| 4739 retval <<= 8; | |
| 4740 retval |= s[0]; | |
| 4741 | |
| 4742 return retval; | |
| 4743 } | |
| 4744 | |
| 39 | 4745 /* |
| 4746 * Set the flags in the first block of the swap file: | |
| 4747 * - file is modified or not: buf->b_changed | |
| 4748 * - 'fileformat' | |
| 4749 * - 'fileencoding' | |
| 4750 */ | |
| 7 | 4751 void |
|
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41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4752 ml_setflags(buf_T *buf) |
| 7 | 4753 { |
| 4754 bhdr_T *hp; | |
| 4755 ZERO_BL *b0p; | |
| 4756 | |
| 4757 if (!buf->b_ml.ml_mfp) | |
| 4758 return; | |
| 4759 for (hp = buf->b_ml.ml_mfp->mf_used_last; hp != NULL; hp = hp->bh_prev) | |
| 4760 { | |
| 4761 if (hp->bh_bnum == 0) | |
| 4762 { | |
| 4763 b0p = (ZERO_BL *)(hp->bh_data); | |
| 39 | 4764 b0p->b0_dirty = buf->b_changed ? B0_DIRTY : 0; |
| 4765 b0p->b0_flags = (b0p->b0_flags & ~B0_FF_MASK) | |
| 4766 | (get_fileformat(buf) + 1); | |
| 4767 #ifdef FEAT_MBYTE | |
| 4768 add_b0_fenc(b0p, buf); | |
| 4769 #endif | |
| 7 | 4770 hp->bh_flags |= BH_DIRTY; |
| 4771 mf_sync(buf->b_ml.ml_mfp, MFS_ZERO); | |
| 4772 break; | |
| 4773 } | |
| 4774 } | |
| 4775 } | |
| 4776 | |
| 2267 | 4777 #if defined(FEAT_CRYPT) || defined(PROTO) |
| 4778 /* | |
| 4779 * If "data" points to a data block encrypt the text in it and return a copy | |
| 4780 * in allocated memory. Return NULL when out of memory. | |
| 4781 * Otherwise return "data". | |
| 4782 */ | |
| 4783 char_u * | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4784 ml_encrypt_data( |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4785 memfile_T *mfp, |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4786 char_u *data, |
|
9387
f094d4085014
commit https://github.com/vim/vim/commit/8767f52fbfd4f053ce00a978227c95f1d7d323fe
Christian Brabandt <cb@256bit.org>
parents:
9295
diff
changeset
|
4787 off_T offset, |
|
7827
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4788 unsigned size) |
| 2267 | 4789 { |
| 4790 DATA_BL *dp = (DATA_BL *)data; | |
| 4791 char_u *head_end; | |
| 4792 char_u *text_start; | |
| 4793 char_u *new_data; | |
| 4794 int text_len; | |
| 6122 | 4795 cryptstate_T *state; |
| 2267 | 4796 |
| 4797 if (dp->db_id != DATA_ID) | |
| 4798 return data; | |
| 4799 | |
| 6817 | 4800 state = ml_crypt_prepare(mfp, offset, FALSE); |
| 4801 if (state == NULL) | |
| 4802 return data; | |
| 4803 | |
| 2267 | 4804 new_data = (char_u *)alloc(size); |
| 4805 if (new_data == NULL) | |
| 4806 return NULL; | |
| 4807 head_end = (char_u *)(&dp->db_index[dp->db_line_count]); | |
| 4808 text_start = (char_u *)dp + dp->db_txt_start; | |
| 4809 text_len = size - dp->db_txt_start; | |
| 4810 | |
| 4811 /* Copy the header and the text. */ | |
| 4812 mch_memmove(new_data, dp, head_end - (char_u *)dp); | |
| 4813 | |
| 4814 /* Encrypt the text. */ | |
| 6122 | 4815 crypt_encode(state, text_start, text_len, new_data + dp->db_txt_start); |
| 4816 crypt_free_state(state); | |
| 2267 | 4817 |
| 4818 /* Clear the gap. */ | |
| 4819 if (head_end < text_start) | |
| 4820 vim_memset(new_data + (head_end - data), 0, text_start - head_end); | |
| 4821 | |
| 4822 return new_data; | |
| 4823 } | |
| 4824 | |
| 4825 /* | |
| 6817 | 4826 * Decrypt the text in "data" if it points to an encrypted data block. |
| 2267 | 4827 */ |
| 4828 void | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4829 ml_decrypt_data( |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4830 memfile_T *mfp, |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4831 char_u *data, |
|
9387
f094d4085014
commit https://github.com/vim/vim/commit/8767f52fbfd4f053ce00a978227c95f1d7d323fe
Christian Brabandt <cb@256bit.org>
parents:
9295
diff
changeset
|
4832 off_T offset, |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4833 unsigned size) |
| 2267 | 4834 { |
| 4835 DATA_BL *dp = (DATA_BL *)data; | |
| 4836 char_u *head_end; | |
| 4837 char_u *text_start; | |
| 4838 int text_len; | |
| 6122 | 4839 cryptstate_T *state; |
| 2267 | 4840 |
| 4841 if (dp->db_id == DATA_ID) | |
| 4842 { | |
| 4843 head_end = (char_u *)(&dp->db_index[dp->db_line_count]); | |
| 4844 text_start = (char_u *)dp + dp->db_txt_start; | |
| 4845 text_len = dp->db_txt_end - dp->db_txt_start; | |
| 4846 | |
| 4847 if (head_end > text_start || dp->db_txt_start > size | |
| 4848 || dp->db_txt_end > size) | |
| 4849 return; /* data was messed up */ | |
| 4850 | |
| 6122 | 4851 state = ml_crypt_prepare(mfp, offset, TRUE); |
| 6817 | 4852 if (state != NULL) |
| 4853 { | |
| 4854 /* Decrypt the text in place. */ | |
| 4855 crypt_decode_inplace(state, text_start, text_len); | |
| 4856 crypt_free_state(state); | |
| 4857 } | |
| 2267 | 4858 } |
| 4859 } | |
| 4860 | |
| 4861 /* | |
| 4862 * Prepare for encryption/decryption, using the key, seed and offset. | |
| 6122 | 4863 * Return an allocated cryptstate_T *. |
| 2267 | 4864 */ |
| 6122 | 4865 static cryptstate_T * |
|
9387
f094d4085014
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Christian Brabandt <cb@256bit.org>
parents:
9295
diff
changeset
|
4866 ml_crypt_prepare(memfile_T *mfp, off_T offset, int reading) |
| 2267 | 4867 { |
| 4868 buf_T *buf = mfp->mf_buffer; | |
| 4869 char_u salt[50]; | |
| 6122 | 4870 int method_nr; |
| 2267 | 4871 char_u *key; |
| 4872 char_u *seed; | |
| 4873 | |
| 4874 if (reading && mfp->mf_old_key != NULL) | |
| 4875 { | |
| 4876 /* Reading back blocks with the previous key/method/seed. */ | |
| 6122 | 4877 method_nr = mfp->mf_old_cm; |
| 2267 | 4878 key = mfp->mf_old_key; |
| 4879 seed = mfp->mf_old_seed; | |
| 4880 } | |
| 4881 else | |
| 4882 { | |
| 6122 | 4883 method_nr = crypt_get_method_nr(buf); |
| 2267 | 4884 key = buf->b_p_key; |
| 4885 seed = mfp->mf_seed; | |
| 4886 } | |
| 6817 | 4887 if (*key == NUL) |
| 4888 return NULL; | |
| 2267 | 4889 |
| 6122 | 4890 if (method_nr == CRYPT_M_ZIP) |
| 2267 | 4891 { |
| 6122 | 4892 /* For PKzip: Append the offset to the key, so that we use a different |
| 4893 * key for every block. */ | |
| 2267 | 4894 vim_snprintf((char *)salt, sizeof(salt), "%s%ld", key, (long)offset); |
| 6122 | 4895 return crypt_create(method_nr, salt, NULL, 0, NULL, 0); |
| 2267 | 4896 } |
| 6122 | 4897 |
| 4898 /* Using blowfish or better: add salt and seed. We use the byte offset | |
| 4899 * of the block for the salt. */ | |
| 4900 vim_snprintf((char *)salt, sizeof(salt), "%ld", (long)offset); | |
| 4901 return crypt_create(method_nr, key, salt, (int)STRLEN(salt), | |
| 4902 seed, MF_SEED_LEN); | |
| 2267 | 4903 } |
| 4904 | |
| 4905 #endif | |
| 4906 | |
| 4907 | |
| 7 | 4908 #if defined(FEAT_BYTEOFF) || defined(PROTO) |
| 4909 | |
| 4910 #define MLCS_MAXL 800 /* max no of lines in chunk */ | |
| 4911 #define MLCS_MINL 400 /* should be half of MLCS_MAXL */ | |
| 4912 | |
| 4913 /* | |
|
2407
6bc102a4bff8
Fix memory access to 'cryptmethod' during recovery. (Dominique Pelle)
Bram Moolenaar <bram@vim.org>
parents:
2394
diff
changeset
|
4914 * Keep information for finding byte offset of a line, updtype may be one of: |
| 7 | 4915 * ML_CHNK_ADDLINE: Add len to parent chunk, possibly splitting it |
| 4916 * Careful: ML_CHNK_ADDLINE may cause ml_find_line() to be called. | |
| 4917 * ML_CHNK_DELLINE: Subtract len from parent chunk, possibly deleting it | |
| 4918 * ML_CHNK_UPDLINE: Add len to parent chunk, as a signed entity. | |
| 4919 */ | |
| 4920 static void | |
|
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4921 ml_updatechunk( |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4922 buf_T *buf, |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4923 linenr_T line, |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4924 long len, |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4925 int updtype) |
| 7 | 4926 { |
| 4927 static buf_T *ml_upd_lastbuf = NULL; | |
| 4928 static linenr_T ml_upd_lastline; | |
| 4929 static linenr_T ml_upd_lastcurline; | |
| 4930 static int ml_upd_lastcurix; | |
| 4931 | |
| 4932 linenr_T curline = ml_upd_lastcurline; | |
| 4933 int curix = ml_upd_lastcurix; | |
| 4934 long size; | |
| 4935 chunksize_T *curchnk; | |
| 4936 int rest; | |
| 4937 bhdr_T *hp; | |
| 4938 DATA_BL *dp; | |
| 4939 | |
| 4940 if (buf->b_ml.ml_usedchunks == -1 || len == 0) | |
| 4941 return; | |
| 4942 if (buf->b_ml.ml_chunksize == NULL) | |
| 4943 { | |
| 4944 buf->b_ml.ml_chunksize = (chunksize_T *) | |
| 4945 alloc((unsigned)sizeof(chunksize_T) * 100); | |
| 4946 if (buf->b_ml.ml_chunksize == NULL) | |
| 4947 { | |
| 4948 buf->b_ml.ml_usedchunks = -1; | |
| 4949 return; | |
| 4950 } | |
| 4951 buf->b_ml.ml_numchunks = 100; | |
| 4952 buf->b_ml.ml_usedchunks = 1; | |
| 4953 buf->b_ml.ml_chunksize[0].mlcs_numlines = 1; | |
| 4954 buf->b_ml.ml_chunksize[0].mlcs_totalsize = 1; | |
| 4955 } | |
| 4956 | |
| 4957 if (updtype == ML_CHNK_UPDLINE && buf->b_ml.ml_line_count == 1) | |
| 4958 { | |
| 4959 /* | |
| 4960 * First line in empty buffer from ml_flush_line() -- reset | |
| 4961 */ | |
| 4962 buf->b_ml.ml_usedchunks = 1; | |
| 4963 buf->b_ml.ml_chunksize[0].mlcs_numlines = 1; | |
| 4964 buf->b_ml.ml_chunksize[0].mlcs_totalsize = | |
| 4965 (long)STRLEN(buf->b_ml.ml_line_ptr) + 1; | |
| 4966 return; | |
| 4967 } | |
| 4968 | |
| 4969 /* | |
| 4970 * Find chunk that our line belongs to, curline will be at start of the | |
| 4971 * chunk. | |
| 4972 */ | |
| 4973 if (buf != ml_upd_lastbuf || line != ml_upd_lastline + 1 | |
| 4974 || updtype != ML_CHNK_ADDLINE) | |
| 4975 { | |
| 4976 for (curline = 1, curix = 0; | |
| 4977 curix < buf->b_ml.ml_usedchunks - 1 | |
| 4978 && line >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 4979 curix++) | |
| 4980 { | |
| 4981 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 4982 } | |
| 4983 } | |
| 4984 else if (line >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines | |
| 4985 && curix < buf->b_ml.ml_usedchunks - 1) | |
| 4986 { | |
| 4987 /* Adjust cached curix & curline */ | |
| 4988 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 4989 curix++; | |
| 4990 } | |
| 4991 curchnk = buf->b_ml.ml_chunksize + curix; | |
| 4992 | |
| 4993 if (updtype == ML_CHNK_DELLINE) | |
| 1030 | 4994 len = -len; |
| 7 | 4995 curchnk->mlcs_totalsize += len; |
| 4996 if (updtype == ML_CHNK_ADDLINE) | |
| 4997 { | |
| 4998 curchnk->mlcs_numlines++; | |
| 4999 | |
| 5000 /* May resize here so we don't have to do it in both cases below */ | |
| 5001 if (buf->b_ml.ml_usedchunks + 1 >= buf->b_ml.ml_numchunks) | |
| 5002 { | |
| 6596 | 5003 chunksize_T *t_chunksize = buf->b_ml.ml_chunksize; |
| 5004 | |
| 7 | 5005 buf->b_ml.ml_numchunks = buf->b_ml.ml_numchunks * 3 / 2; |
| 5006 buf->b_ml.ml_chunksize = (chunksize_T *) | |
| 5007 vim_realloc(buf->b_ml.ml_chunksize, | |
| 5008 sizeof(chunksize_T) * buf->b_ml.ml_numchunks); | |
| 5009 if (buf->b_ml.ml_chunksize == NULL) | |
| 5010 { | |
| 5011 /* Hmmmm, Give up on offset for this buffer */ | |
| 6596 | 5012 vim_free(t_chunksize); |
| 7 | 5013 buf->b_ml.ml_usedchunks = -1; |
| 5014 return; | |
| 5015 } | |
| 5016 } | |
| 5017 | |
| 5018 if (buf->b_ml.ml_chunksize[curix].mlcs_numlines >= MLCS_MAXL) | |
| 5019 { | |
| 5020 int count; /* number of entries in block */ | |
| 5021 int idx; | |
| 5022 int text_end; | |
| 5023 int linecnt; | |
| 5024 | |
| 5025 mch_memmove(buf->b_ml.ml_chunksize + curix + 1, | |
| 5026 buf->b_ml.ml_chunksize + curix, | |
| 5027 (buf->b_ml.ml_usedchunks - curix) * | |
| 5028 sizeof(chunksize_T)); | |
| 1855 | 5029 /* Compute length of first half of lines in the split chunk */ |
| 7 | 5030 size = 0; |
| 5031 linecnt = 0; | |
| 5032 while (curline < buf->b_ml.ml_line_count | |
| 5033 && linecnt < MLCS_MINL) | |
| 5034 { | |
| 5035 if ((hp = ml_find_line(buf, curline, ML_FIND)) == NULL) | |
| 5036 { | |
| 5037 buf->b_ml.ml_usedchunks = -1; | |
| 5038 return; | |
| 5039 } | |
| 5040 dp = (DATA_BL *)(hp->bh_data); | |
| 5041 count = (long)(buf->b_ml.ml_locked_high) - | |
| 5042 (long)(buf->b_ml.ml_locked_low) + 1; | |
| 5043 idx = curline - buf->b_ml.ml_locked_low; | |
| 5044 curline = buf->b_ml.ml_locked_high + 1; | |
| 5045 if (idx == 0)/* first line in block, text at the end */ | |
| 5046 text_end = dp->db_txt_end; | |
| 5047 else | |
| 5048 text_end = ((dp->db_index[idx - 1]) & DB_INDEX_MASK); | |
| 5049 /* Compute index of last line to use in this MEMLINE */ | |
| 5050 rest = count - idx; | |
| 5051 if (linecnt + rest > MLCS_MINL) | |
| 5052 { | |
| 5053 idx += MLCS_MINL - linecnt - 1; | |
| 5054 linecnt = MLCS_MINL; | |
| 5055 } | |
| 5056 else | |
| 5057 { | |
| 5058 idx = count - 1; | |
| 5059 linecnt += rest; | |
| 5060 } | |
| 5061 size += text_end - ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 5062 } | |
| 5063 buf->b_ml.ml_chunksize[curix].mlcs_numlines = linecnt; | |
| 5064 buf->b_ml.ml_chunksize[curix + 1].mlcs_numlines -= linecnt; | |
| 5065 buf->b_ml.ml_chunksize[curix].mlcs_totalsize = size; | |
| 5066 buf->b_ml.ml_chunksize[curix + 1].mlcs_totalsize -= size; | |
| 5067 buf->b_ml.ml_usedchunks++; | |
| 5068 ml_upd_lastbuf = NULL; /* Force recalc of curix & curline */ | |
| 5069 return; | |
| 5070 } | |
| 5071 else if (buf->b_ml.ml_chunksize[curix].mlcs_numlines >= MLCS_MINL | |
| 5072 && curix == buf->b_ml.ml_usedchunks - 1 | |
| 5073 && buf->b_ml.ml_line_count - line <= 1) | |
| 5074 { | |
| 5075 /* | |
| 5076 * We are in the last chunk and it is cheap to crate a new one | |
| 5077 * after this. Do it now to avoid the loop above later on | |
| 5078 */ | |
| 5079 curchnk = buf->b_ml.ml_chunksize + curix + 1; | |
| 5080 buf->b_ml.ml_usedchunks++; | |
| 5081 if (line == buf->b_ml.ml_line_count) | |
| 5082 { | |
| 5083 curchnk->mlcs_numlines = 0; | |
| 5084 curchnk->mlcs_totalsize = 0; | |
| 5085 } | |
| 5086 else | |
| 5087 { | |
| 5088 /* | |
| 5089 * Line is just prior to last, move count for last | |
| 5090 * This is the common case when loading a new file | |
| 5091 */ | |
| 5092 hp = ml_find_line(buf, buf->b_ml.ml_line_count, ML_FIND); | |
| 5093 if (hp == NULL) | |
| 5094 { | |
| 5095 buf->b_ml.ml_usedchunks = -1; | |
| 5096 return; | |
| 5097 } | |
| 5098 dp = (DATA_BL *)(hp->bh_data); | |
| 5099 if (dp->db_line_count == 1) | |
| 5100 rest = dp->db_txt_end - dp->db_txt_start; | |
| 5101 else | |
| 5102 rest = | |
| 5103 ((dp->db_index[dp->db_line_count - 2]) & DB_INDEX_MASK) | |
| 5104 - dp->db_txt_start; | |
| 5105 curchnk->mlcs_totalsize = rest; | |
| 5106 curchnk->mlcs_numlines = 1; | |
| 5107 curchnk[-1].mlcs_totalsize -= rest; | |
| 5108 curchnk[-1].mlcs_numlines -= 1; | |
| 5109 } | |
| 5110 } | |
| 5111 } | |
| 5112 else if (updtype == ML_CHNK_DELLINE) | |
| 5113 { | |
| 5114 curchnk->mlcs_numlines--; | |
| 5115 ml_upd_lastbuf = NULL; /* Force recalc of curix & curline */ | |
| 5116 if (curix < (buf->b_ml.ml_usedchunks - 1) | |
| 5117 && (curchnk->mlcs_numlines + curchnk[1].mlcs_numlines) | |
| 5118 <= MLCS_MINL) | |
| 5119 { | |
| 5120 curix++; | |
| 5121 curchnk = buf->b_ml.ml_chunksize + curix; | |
| 5122 } | |
| 5123 else if (curix == 0 && curchnk->mlcs_numlines <= 0) | |
| 5124 { | |
| 5125 buf->b_ml.ml_usedchunks--; | |
| 5126 mch_memmove(buf->b_ml.ml_chunksize, buf->b_ml.ml_chunksize + 1, | |
| 5127 buf->b_ml.ml_usedchunks * sizeof(chunksize_T)); | |
| 5128 return; | |
| 5129 } | |
| 5130 else if (curix == 0 || (curchnk->mlcs_numlines > 10 | |
| 5131 && (curchnk->mlcs_numlines + curchnk[-1].mlcs_numlines) | |
| 5132 > MLCS_MINL)) | |
| 5133 { | |
| 5134 return; | |
| 5135 } | |
| 5136 | |
| 5137 /* Collapse chunks */ | |
| 5138 curchnk[-1].mlcs_numlines += curchnk->mlcs_numlines; | |
| 5139 curchnk[-1].mlcs_totalsize += curchnk->mlcs_totalsize; | |
| 5140 buf->b_ml.ml_usedchunks--; | |
| 5141 if (curix < buf->b_ml.ml_usedchunks) | |
| 5142 { | |
| 5143 mch_memmove(buf->b_ml.ml_chunksize + curix, | |
| 5144 buf->b_ml.ml_chunksize + curix + 1, | |
| 5145 (buf->b_ml.ml_usedchunks - curix) * | |
| 5146 sizeof(chunksize_T)); | |
| 5147 } | |
| 5148 return; | |
| 5149 } | |
| 5150 ml_upd_lastbuf = buf; | |
| 5151 ml_upd_lastline = line; | |
| 5152 ml_upd_lastcurline = curline; | |
| 5153 ml_upd_lastcurix = curix; | |
| 5154 } | |
| 5155 | |
| 5156 /* | |
| 5157 * Find offset for line or line with offset. | |
| 169 | 5158 * Find line with offset if "lnum" is 0; return remaining offset in offp |
| 5159 * Find offset of line if "lnum" > 0 | |
| 7 | 5160 * return -1 if information is not available |
| 5161 */ | |
| 5162 long | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
5163 ml_find_line_or_offset(buf_T *buf, linenr_T lnum, long *offp) |
| 7 | 5164 { |
| 5165 linenr_T curline; | |
| 5166 int curix; | |
| 5167 long size; | |
| 5168 bhdr_T *hp; | |
| 5169 DATA_BL *dp; | |
| 5170 int count; /* number of entries in block */ | |
| 5171 int idx; | |
| 5172 int start_idx; | |
| 5173 int text_end; | |
| 5174 long offset; | |
| 5175 int len; | |
| 5176 int ffdos = (get_fileformat(buf) == EOL_DOS); | |
| 5177 int extra = 0; | |
| 5178 | |
| 169 | 5179 /* take care of cached line first */ |
| 5180 ml_flush_line(curbuf); | |
| 5181 | |
| 7 | 5182 if (buf->b_ml.ml_usedchunks == -1 |
| 5183 || buf->b_ml.ml_chunksize == NULL | |
| 169 | 5184 || lnum < 0) |
| 7 | 5185 return -1; |
| 5186 | |
| 5187 if (offp == NULL) | |
| 5188 offset = 0; | |
| 5189 else | |
| 5190 offset = *offp; | |
| 169 | 5191 if (lnum == 0 && offset <= 0) |
| 7 | 5192 return 1; /* Not a "find offset" and offset 0 _must_ be in line 1 */ |
| 5193 /* | |
| 5194 * Find the last chunk before the one containing our line. Last chunk is | |
| 5195 * special because it will never qualify | |
| 5196 */ | |
| 5197 curline = 1; | |
| 5198 curix = size = 0; | |
| 5199 while (curix < buf->b_ml.ml_usedchunks - 1 | |
| 169 | 5200 && ((lnum != 0 |
| 5201 && lnum >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines) | |
| 7 | 5202 || (offset != 0 |
| 5203 && offset > size + buf->b_ml.ml_chunksize[curix].mlcs_totalsize | |
| 5204 + ffdos * buf->b_ml.ml_chunksize[curix].mlcs_numlines))) | |
| 5205 { | |
| 5206 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 5207 size += buf->b_ml.ml_chunksize[curix].mlcs_totalsize; | |
| 5208 if (offset && ffdos) | |
| 5209 size += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 5210 curix++; | |
| 5211 } | |
| 5212 | |
| 169 | 5213 while ((lnum != 0 && curline < lnum) || (offset != 0 && size < offset)) |
| 7 | 5214 { |
| 5215 if (curline > buf->b_ml.ml_line_count | |
| 5216 || (hp = ml_find_line(buf, curline, ML_FIND)) == NULL) | |
| 5217 return -1; | |
| 5218 dp = (DATA_BL *)(hp->bh_data); | |
| 5219 count = (long)(buf->b_ml.ml_locked_high) - | |
| 5220 (long)(buf->b_ml.ml_locked_low) + 1; | |
| 5221 start_idx = idx = curline - buf->b_ml.ml_locked_low; | |
| 5222 if (idx == 0)/* first line in block, text at the end */ | |
| 5223 text_end = dp->db_txt_end; | |
| 5224 else | |
| 5225 text_end = ((dp->db_index[idx - 1]) & DB_INDEX_MASK); | |
| 5226 /* Compute index of last line to use in this MEMLINE */ | |
| 169 | 5227 if (lnum != 0) |
| 7 | 5228 { |
| 169 | 5229 if (curline + (count - idx) >= lnum) |
| 5230 idx += lnum - curline - 1; | |
| 7 | 5231 else |
| 5232 idx = count - 1; | |
| 5233 } | |
| 5234 else | |
| 5235 { | |
| 5236 extra = 0; | |
| 5237 while (offset >= size | |
| 5238 + text_end - (int)((dp->db_index[idx]) & DB_INDEX_MASK) | |
| 5239 + ffdos) | |
| 5240 { | |
| 5241 if (ffdos) | |
| 5242 size++; | |
| 5243 if (idx == count - 1) | |
| 5244 { | |
| 5245 extra = 1; | |
| 5246 break; | |
| 5247 } | |
| 5248 idx++; | |
| 5249 } | |
| 5250 } | |
| 5251 len = text_end - ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 5252 size += len; | |
| 5253 if (offset != 0 && size >= offset) | |
| 5254 { | |
| 5255 if (size + ffdos == offset) | |
| 5256 *offp = 0; | |
| 5257 else if (idx == start_idx) | |
| 5258 *offp = offset - size + len; | |
| 5259 else | |
| 5260 *offp = offset - size + len | |
| 5261 - (text_end - ((dp->db_index[idx - 1]) & DB_INDEX_MASK)); | |
| 5262 curline += idx - start_idx + extra; | |
| 5263 if (curline > buf->b_ml.ml_line_count) | |
| 5264 return -1; /* exactly one byte beyond the end */ | |
| 5265 return curline; | |
| 5266 } | |
| 5267 curline = buf->b_ml.ml_locked_high + 1; | |
| 5268 } | |
| 5269 | |
| 169 | 5270 if (lnum != 0) |
| 20 | 5271 { |
| 5272 /* Count extra CR characters. */ | |
| 5273 if (ffdos) | |
| 169 | 5274 size += lnum - 1; |
| 20 | 5275 |
| 6933 | 5276 /* Don't count the last line break if 'noeol' and ('bin' or |
| 5277 * 'nofixeol'). */ | |
| 5278 if ((!buf->b_p_fixeol || buf->b_p_bin) && !buf->b_p_eol | |
| 5279 && buf->b_ml.ml_line_count == lnum) | |
| 20 | 5280 size -= ffdos + 1; |
| 5281 } | |
| 5282 | |
| 7 | 5283 return size; |
| 5284 } | |
| 5285 | |
| 5286 /* | |
| 5287 * Goto byte in buffer with offset 'cnt'. | |
| 5288 */ | |
| 5289 void | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
5290 goto_byte(long cnt) |
| 7 | 5291 { |
| 5292 long boff = cnt; | |
| 5293 linenr_T lnum; | |
| 5294 | |
| 5295 ml_flush_line(curbuf); /* cached line may be dirty */ | |
| 5296 setpcmark(); | |
| 5297 if (boff) | |
| 5298 --boff; | |
| 5299 lnum = ml_find_line_or_offset(curbuf, (linenr_T)0, &boff); | |
| 5300 if (lnum < 1) /* past the end */ | |
| 5301 { | |
| 5302 curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; | |
| 5303 curwin->w_curswant = MAXCOL; | |
| 5304 coladvance((colnr_T)MAXCOL); | |
| 5305 } | |
| 5306 else | |
| 5307 { | |
| 5308 curwin->w_cursor.lnum = lnum; | |
| 5309 curwin->w_cursor.col = (colnr_T)boff; | |
| 572 | 5310 # ifdef FEAT_VIRTUALEDIT |
| 5311 curwin->w_cursor.coladd = 0; | |
| 5312 # endif | |
| 7 | 5313 curwin->w_set_curswant = TRUE; |
| 5314 } | |
| 5315 check_cursor(); | |
| 5316 | |
| 5317 # ifdef FEAT_MBYTE | |
| 5318 /* Make sure the cursor is on the first byte of a multi-byte char. */ | |
| 5319 if (has_mbyte) | |
| 5320 mb_adjust_cursor(); | |
| 5321 # endif | |
| 5322 } | |
| 5323 #endif |