Mercurial > vim
annotate src/memline.c @ 8422:5d2c84be23b5 v7.4.1502
commit https://github.com/vim/vim/commit/99ef06296f3c37490511c03786a2c8672e015c56
Author: Bram Moolenaar <Bram@vim.org>
Date: Sun Mar 6 20:22:25 2016 +0100
patch 7.4.1502
Problem: Writing last-but-one line of buffer to a channel isn't implemented
yet.
Solution: Implement it. Fix leaving a swap file behind.
| author | Christian Brabandt <cb@256bit.org> |
|---|---|
| date | Sun, 06 Mar 2016 20:30:04 +0100 |
| parents | 05b88224cea1 |
| children | caed4b2d305f |
| rev | line source |
|---|---|
| 7 | 1 /* vi:set ts=8 sts=4 sw=4: |
| 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 { | |
| 336 EMSG(_("E298: Didn't get block nr 0?")); | |
| 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 { | |
| 386 EMSG(_("E298: Didn't get block nr 1?")); | |
| 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 { | |
| 404 EMSG(_("E298: Didn't get block nr 2?")); | |
| 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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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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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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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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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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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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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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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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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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738 ml_open_files(void) |
| 7 | 739 { |
| 740 buf_T *buf; | |
| 741 | |
| 742 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
| 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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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 | |
| 876 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
| 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 | |
| 896 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
| 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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changeset
|
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) |
| 39 | 953 EMSG(_("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 { |
| 976 struct stat st; | |
| 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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diff
changeset
|
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; | |
| 1117 struct stat org_stat, swp_stat; | |
| 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; | |
| 1130 off_t size; | |
| 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); | |
| 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) |
| 1975 | 1151 STRNICMP(fname + len - 4, "_s" , 2) |
| 7 | 1152 #else |
| 1975 | 1153 STRNICMP(fname + len - 4, ".s" , 2) |
| 7 | 1154 #endif |
| 1975 | 1155 == 0 |
| 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. | |
|
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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 { | |
|
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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 } | |
| 7 | 1326 if ((size = lseek(mfp->mf_fd, (off_t)0L, SEEK_END)) <= 0) |
| 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
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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
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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
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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, | |
| 1522 line_count, NULL, 0) == FAIL) | |
| 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
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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>
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diff
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|
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>
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diff
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|
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>
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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:
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diff
changeset
|
1646 { |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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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
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diff
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|
1648 * empty. Don't set the modified flag then. */ |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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diff
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|
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
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diff
changeset
|
1650 { |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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diff
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|
1651 changed_int(); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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diff
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|
1652 ++curbuf->b_changedtick; |
|
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After recovery check if the text changed. If it did mark the buffer as
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|
1653 } |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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|
1654 } |
|
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After recovery check if the text changed. If it did mark the buffer as
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|
1655 else |
|
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After recovery check if the text changed. If it did mark the buffer as
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|
1656 { |
|
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After recovery check if the text changed. If it did mark the buffer as
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|
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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diff
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|
1658 { |
|
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After recovery check if the text changed. If it did mark the buffer as
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|
1659 /* Need to copy one line, fetching the other one may flush it. */ |
|
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After recovery check if the text changed. If it did mark the buffer as
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|
1660 p = vim_strsave(ml_get(idx)); |
|
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After recovery check if the text changed. If it did mark the buffer as
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|
1661 i = STRCMP(p, ml_get(idx + lnum)); |
|
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After recovery check if the text changed. If it did mark the buffer as
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|
1662 vim_free(p); |
|
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After recovery check if the text changed. If it did mark the buffer as
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|
1663 if (i != 0) |
|
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After recovery check if the text changed. If it did mark the buffer as
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|
1664 { |
|
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After recovery check if the text changed. If it did mark the buffer as
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|
1665 changed_int(); |
|
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|
1666 ++curbuf->b_changedtick; |
|
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|
1667 break; |
|
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|
1668 } |
|
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|
1669 } |
|
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|
1670 } |
|
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|
1671 |
|
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|
1672 /* |
|
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|
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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|
1674 * empty buffer. These will now be after the last line in the buffer. |
|
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After recovery check if the text changed. If it did mark the buffer as
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|
1675 */ |
|
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|
1676 while (curbuf->b_ml.ml_line_count > lnum |
|
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|
1677 && !(curbuf->b_ml.ml_flags & ML_EMPTY)) |
|
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After recovery check if the text changed. If it did mark the buffer as
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|
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
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After recovery check if the text changed. If it did mark the buffer as
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|
1695 if (curbuf->b_changed) |
|
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After recovery check if the text changed. If it did mark the buffer as
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|
1696 { |
|
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After recovery check if the text changed. If it did mark the buffer as
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|
1697 MSG(_("Recovery completed. You should check if everything is OK.")); |
|
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After recovery check if the text changed. If it did mark the buffer as
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|
1698 MSG_PUTS(_("\n(You might want to write out this file under another name\n")); |
|
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After recovery check if the text changed. If it did mark the buffer as
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|
1699 MSG_PUTS(_("and run diff with the original file to check for changes)")); |
|
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|
1700 } |
|
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|
1701 else |
|
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|
1702 MSG(_("Recovery completed. Buffer contents equals file contents.")); |
|
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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
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|
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 | |
|
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|
1757 recover_names( |
|
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|
1758 char_u *fname, /* base for swap file name */ |
|
41789f16d6b2
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|
1759 int list, /* when TRUE, list the swap file names */ |
|
41789f16d6b2
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|
1760 int nr, /* when non-zero, return nr'th swap file name */ |
|
41789f16d6b2
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|
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 |
|
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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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|
1786 #endif |
| 2267 | 1787 fname_res = fname; |
| 2175 | 1788 } |
| 7 | 1789 |
| 1790 if (list) | |
| 1791 { | |
|
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|
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 | |
|
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|
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) | |
| 1866 p = dir_name + STRLEN(dir_name); | |
| 39 | 1867 if (after_pathsep(dir_name, p) && p[-1] == p[-2]) |
| 7 | 1868 { |
| 1869 /* Ends with '//', Use Full path for swap name */ | |
|
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|
1870 tail = make_percent_swname(dir_name, fname_res); |
| 7 | 1871 } |
| 1872 else | |
| 1873 #endif | |
| 1874 { | |
|
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|
1875 tail = gettail(fname_res); |
| 7 | 1876 tail = concat_fnames(dir_name, tail, TRUE); |
| 1877 } | |
| 1878 if (tail == NULL) | |
| 1879 num_names = 0; | |
| 1880 else | |
| 1881 { | |
| 1882 num_names = recov_file_names(names, tail, FALSE); | |
| 1883 vim_free(tail); | |
| 1884 } | |
| 1885 } | |
| 1886 } | |
| 1887 | |
| 1888 /* check for out-of-memory */ | |
| 1889 for (i = 0; i < num_names; ++i) | |
| 1890 { | |
| 1891 if (names[i] == NULL) | |
| 1892 { | |
| 1893 for (i = 0; i < num_names; ++i) | |
| 1894 vim_free(names[i]); | |
| 1895 num_names = 0; | |
| 1896 } | |
| 1897 } | |
| 1898 if (num_names == 0) | |
| 1899 num_files = 0; | |
| 1900 else if (expand_wildcards(num_names, names, &num_files, &files, | |
| 1901 EW_KEEPALL|EW_FILE|EW_SILENT) == FAIL) | |
| 1902 num_files = 0; | |
| 1903 | |
| 1904 /* | |
| 1905 * When no swap file found, wildcard expansion might have failed (e.g. | |
| 1906 * not able to execute the shell). | |
| 1907 * Try finding a swap file by simply adding ".swp" to the file name. | |
| 1908 */ | |
| 2267 | 1909 if (*dirp == NUL && file_count + num_files == 0 && fname != NULL) |
| 7 | 1910 { |
| 1911 struct stat st; | |
| 1912 char_u *swapname; | |
| 1913 | |
|
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1914 swapname = modname(fname_res, |
| 2823 | 1915 #if defined(VMS) |
|
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|
1916 (char_u *)"_swp", FALSE |
| 7 | 1917 #else |
|
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|
1918 (char_u *)".swp", TRUE |
| 7 | 1919 #endif |
|
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parents:
2108
diff
changeset
|
1920 ); |
| 7 | 1921 if (swapname != NULL) |
| 1922 { | |
| 1923 if (mch_stat((char *)swapname, &st) != -1) /* It exists! */ | |
| 1924 { | |
| 1925 files = (char_u **)alloc((unsigned)sizeof(char_u *)); | |
| 1926 if (files != NULL) | |
| 1927 { | |
| 1928 files[0] = swapname; | |
| 1929 swapname = NULL; | |
| 1930 num_files = 1; | |
| 1931 } | |
| 1932 } | |
| 1933 vim_free(swapname); | |
| 1934 } | |
| 1935 } | |
| 1936 | |
| 1937 /* | |
| 1938 * remove swapfile name of the current buffer, it must be ignored | |
| 1939 */ | |
| 1940 if (curbuf->b_ml.ml_mfp != NULL | |
| 1941 && (p = curbuf->b_ml.ml_mfp->mf_fname) != NULL) | |
| 1942 { | |
| 1943 for (i = 0; i < num_files; ++i) | |
| 1944 if (fullpathcmp(p, files[i], TRUE) & FPC_SAME) | |
| 1945 { | |
| 1855 | 1946 /* Remove the name from files[i]. Move further entries |
| 1947 * down. When the array becomes empty free it here, since | |
| 1948 * FreeWild() won't be called below. */ | |
| 7 | 1949 vim_free(files[i]); |
| 1855 | 1950 if (--num_files == 0) |
| 1951 vim_free(files); | |
| 1952 else | |
| 1953 for ( ; i < num_files; ++i) | |
| 1954 files[i] = files[i + 1]; | |
| 7 | 1955 } |
| 1956 } | |
| 838 | 1957 if (nr > 0) |
| 7 | 1958 { |
| 1959 file_count += num_files; | |
| 1960 if (nr <= file_count) | |
| 1961 { | |
| 2267 | 1962 *fname_out = vim_strsave( |
| 1963 files[nr - 1 + num_files - file_count]); | |
| 7 | 1964 dirp = (char_u *)""; /* stop searching */ |
| 1965 } | |
| 1966 } | |
| 1967 else if (list) | |
| 1968 { | |
| 1969 if (dir_name[0] == '.' && dir_name[1] == NUL) | |
| 1970 { | |
| 2267 | 1971 if (fname == NULL) |
| 7 | 1972 MSG_PUTS(_(" In current directory:\n")); |
| 1973 else | |
| 1974 MSG_PUTS(_(" Using specified name:\n")); | |
| 1975 } | |
| 1976 else | |
| 1977 { | |
| 1978 MSG_PUTS(_(" In directory ")); | |
| 1979 msg_home_replace(dir_name); | |
| 1980 MSG_PUTS(":\n"); | |
| 1981 } | |
| 1982 | |
| 1983 if (num_files) | |
| 1984 { | |
| 1985 for (i = 0; i < num_files; ++i) | |
| 1986 { | |
| 1987 /* print the swap file name */ | |
| 1988 msg_outnum((long)++file_count); | |
| 1989 MSG_PUTS(". "); | |
| 1990 msg_puts(gettail(files[i])); | |
| 1991 msg_putchar('\n'); | |
| 1992 (void)swapfile_info(files[i]); | |
| 1993 } | |
| 1994 } | |
| 1995 else | |
| 1996 MSG_PUTS(_(" -- none --\n")); | |
| 1997 out_flush(); | |
| 1998 } | |
| 1999 else | |
| 2000 file_count += num_files; | |
| 2001 | |
| 2002 for (i = 0; i < num_names; ++i) | |
| 2003 vim_free(names[i]); | |
| 838 | 2004 if (num_files > 0) |
| 2005 FreeWild(num_files, files); | |
| 7 | 2006 } |
| 2007 vim_free(dir_name); | |
| 2008 return file_count; | |
| 2009 } | |
| 2010 | |
| 2011 #if defined(UNIX) || defined(WIN3264) /* Need _very_ long file names */ | |
| 2012 /* | |
| 2013 * Append the full path to name with path separators made into percent | |
| 2014 * signs, to dir. An unnamed buffer is handled as "" (<currentdir>/"") | |
| 2015 */ | |
| 2016 static char_u * | |
|
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2017 make_percent_swname(char_u *dir, char_u *name) |
| 7 | 2018 { |
| 39 | 2019 char_u *d, *s, *f; |
| 7 | 2020 |
| 2021 f = fix_fname(name != NULL ? name : (char_u *) ""); | |
| 2022 d = NULL; | |
| 2023 if (f != NULL) | |
| 2024 { | |
| 2025 s = alloc((unsigned)(STRLEN(f) + 1)); | |
| 2026 if (s != NULL) | |
| 2027 { | |
| 39 | 2028 STRCPY(s, f); |
| 2029 for (d = s; *d != NUL; mb_ptr_adv(d)) | |
| 2030 if (vim_ispathsep(*d)) | |
| 2031 *d = '%'; | |
| 7 | 2032 d = concat_fnames(dir, s, TRUE); |
| 2033 vim_free(s); | |
| 2034 } | |
| 2035 vim_free(f); | |
| 2036 } | |
| 2037 return d; | |
| 2038 } | |
| 2039 #endif | |
| 2040 | |
| 2041 #if (defined(UNIX) || defined(__EMX__) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)) | |
| 2042 static int process_still_running; | |
| 2043 #endif | |
| 2044 | |
| 2045 /* | |
| 580 | 2046 * Give information about an existing swap file. |
| 7 | 2047 * Returns timestamp (0 when unknown). |
| 2048 */ | |
| 2049 static time_t | |
|
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2050 swapfile_info(char_u *fname) |
| 7 | 2051 { |
| 2052 struct stat st; | |
| 2053 int fd; | |
| 2054 struct block0 b0; | |
| 2055 time_t x = (time_t)0; | |
| 1001 | 2056 char *p; |
| 7 | 2057 #ifdef UNIX |
| 2058 char_u uname[B0_UNAME_SIZE]; | |
| 2059 #endif | |
| 2060 | |
| 2061 /* print the swap file date */ | |
| 2062 if (mch_stat((char *)fname, &st) != -1) | |
| 2063 { | |
| 2064 #ifdef UNIX | |
| 2065 /* print name of owner of the file */ | |
| 2066 if (mch_get_uname(st.st_uid, uname, B0_UNAME_SIZE) == OK) | |
| 2067 { | |
| 2068 MSG_PUTS(_(" owned by: ")); | |
| 2069 msg_outtrans(uname); | |
| 2070 MSG_PUTS(_(" dated: ")); | |
| 2071 } | |
| 2072 else | |
| 2073 #endif | |
| 2074 MSG_PUTS(_(" dated: ")); | |
| 2075 x = st.st_mtime; /* Manx C can't do &st.st_mtime */ | |
| 1001 | 2076 p = ctime(&x); /* includes '\n' */ |
| 2077 if (p == NULL) | |
| 2078 MSG_PUTS("(invalid)\n"); | |
| 2079 else | |
| 2080 MSG_PUTS(p); | |
| 7 | 2081 } |
| 2082 | |
| 2083 /* | |
| 2084 * print the original file name | |
| 2085 */ | |
| 2086 fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
| 2087 if (fd >= 0) | |
| 2088 { | |
| 2664 | 2089 if (read_eintr(fd, &b0, sizeof(b0)) == sizeof(b0)) |
| 7 | 2090 { |
| 2091 if (STRNCMP(b0.b0_version, "VIM 3.0", 7) == 0) | |
| 2092 { | |
| 2093 MSG_PUTS(_(" [from Vim version 3.0]")); | |
| 2094 } | |
| 2267 | 2095 else if (ml_check_b0_id(&b0) == FAIL) |
| 7 | 2096 { |
| 2097 MSG_PUTS(_(" [does not look like a Vim swap file]")); | |
| 2098 } | |
| 2099 else | |
| 2100 { | |
| 2101 MSG_PUTS(_(" file name: ")); | |
| 2102 if (b0.b0_fname[0] == NUL) | |
| 9 | 2103 MSG_PUTS(_("[No Name]")); |
| 7 | 2104 else |
| 2105 msg_outtrans(b0.b0_fname); | |
| 2106 | |
| 2107 MSG_PUTS(_("\n modified: ")); | |
| 2108 MSG_PUTS(b0.b0_dirty ? _("YES") : _("no")); | |
| 2109 | |
| 2110 if (*(b0.b0_uname) != NUL) | |
| 2111 { | |
| 2112 MSG_PUTS(_("\n user name: ")); | |
| 2113 msg_outtrans(b0.b0_uname); | |
| 2114 } | |
| 2115 | |
| 2116 if (*(b0.b0_hname) != NUL) | |
| 2117 { | |
| 2118 if (*(b0.b0_uname) != NUL) | |
| 2119 MSG_PUTS(_(" host name: ")); | |
| 2120 else | |
| 2121 MSG_PUTS(_("\n host name: ")); | |
| 2122 msg_outtrans(b0.b0_hname); | |
| 2123 } | |
| 2124 | |
| 2125 if (char_to_long(b0.b0_pid) != 0L) | |
| 2126 { | |
| 2127 MSG_PUTS(_("\n process ID: ")); | |
| 2128 msg_outnum(char_to_long(b0.b0_pid)); | |
| 2129 #if defined(UNIX) || defined(__EMX__) | |
| 2130 /* EMX kill() not working correctly, it seems */ | |
| 2131 if (kill((pid_t)char_to_long(b0.b0_pid), 0) == 0) | |
| 2132 { | |
| 2133 MSG_PUTS(_(" (still running)")); | |
| 2134 # if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) | |
| 2135 process_still_running = TRUE; | |
| 2136 # endif | |
| 2137 } | |
| 2138 #endif | |
| 2139 } | |
| 2140 | |
| 2141 if (b0_magic_wrong(&b0)) | |
| 2142 { | |
|
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Christian Brabandt <cb@256bit.org>
parents:
7961
diff
changeset
|
2143 #if defined(MSWIN) |
| 7 | 2144 if (STRNCMP(b0.b0_hname, "PC ", 3) == 0) |
| 2145 MSG_PUTS(_("\n [not usable with this version of Vim]")); | |
| 2146 else | |
| 2147 #endif | |
| 2148 MSG_PUTS(_("\n [not usable on this computer]")); | |
| 2149 } | |
| 2150 } | |
| 2151 } | |
| 2152 else | |
| 2153 MSG_PUTS(_(" [cannot be read]")); | |
| 2154 close(fd); | |
| 2155 } | |
| 2156 else | |
| 2157 MSG_PUTS(_(" [cannot be opened]")); | |
| 2158 msg_putchar('\n'); | |
| 2159 | |
| 2160 return x; | |
| 2161 } | |
| 2162 | |
| 2163 static int | |
|
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2164 recov_file_names(char_u **names, char_u *path, int prepend_dot) |
| 7 | 2165 { |
| 2166 int num_names; | |
| 2167 | |
| 2168 /* | |
| 2169 * (Win32 and Win64) never short names, but do prepend a dot. | |
| 2170 * (Not MS-DOS or Win32 or Win64) maybe short name, maybe not: Try both. | |
| 2171 * Only use the short name if it is different. | |
| 2172 */ | |
| 2173 char_u *p; | |
| 2174 int i; | |
| 2175 # ifndef WIN3264 | |
| 2176 int shortname = curbuf->b_shortname; | |
| 2177 | |
| 2178 curbuf->b_shortname = FALSE; | |
| 2179 # endif | |
| 2180 | |
| 2181 num_names = 0; | |
| 2182 | |
| 2183 /* | |
| 2184 * May also add the file name with a dot prepended, for swap file in same | |
| 2185 * dir as original file. | |
| 2186 */ | |
| 2187 if (prepend_dot) | |
| 2188 { | |
| 2189 names[num_names] = modname(path, (char_u *)".sw?", TRUE); | |
| 2190 if (names[num_names] == NULL) | |
| 2191 goto end; | |
| 2192 ++num_names; | |
| 2193 } | |
| 2194 | |
| 2195 /* | |
| 2196 * Form the normal swap file name pattern by appending ".sw?". | |
| 2197 */ | |
| 2198 #ifdef VMS | |
| 2199 names[num_names] = concat_fnames(path, (char_u *)"_sw%", FALSE); | |
| 2200 #else | |
| 2201 names[num_names] = concat_fnames(path, (char_u *)".sw?", FALSE); | |
| 2202 #endif | |
| 2203 if (names[num_names] == NULL) | |
| 2204 goto end; | |
| 2205 if (num_names >= 1) /* check if we have the same name twice */ | |
| 2206 { | |
| 2207 p = names[num_names - 1]; | |
| 2208 i = (int)STRLEN(names[num_names - 1]) - (int)STRLEN(names[num_names]); | |
| 2209 if (i > 0) | |
| 2210 p += i; /* file name has been expanded to full path */ | |
| 2211 | |
| 2212 if (STRCMP(p, names[num_names]) != 0) | |
| 2213 ++num_names; | |
| 2214 else | |
| 2215 vim_free(names[num_names]); | |
| 2216 } | |
| 2217 else | |
| 2218 ++num_names; | |
| 2219 | |
| 2220 # ifndef WIN3264 | |
| 2221 /* | |
| 2222 * Also try with 'shortname' set, in case the file is on a DOS filesystem. | |
| 2223 */ | |
| 2224 curbuf->b_shortname = TRUE; | |
| 2225 #ifdef VMS | |
| 2226 names[num_names] = modname(path, (char_u *)"_sw%", FALSE); | |
| 2227 #else | |
| 2228 names[num_names] = modname(path, (char_u *)".sw?", FALSE); | |
| 2229 #endif | |
| 2230 if (names[num_names] == NULL) | |
| 2231 goto end; | |
| 2232 | |
| 2233 /* | |
| 2234 * Remove the one from 'shortname', if it's the same as with 'noshortname'. | |
| 2235 */ | |
| 2236 p = names[num_names]; | |
| 2237 i = STRLEN(names[num_names]) - STRLEN(names[num_names - 1]); | |
| 2238 if (i > 0) | |
| 2239 p += i; /* file name has been expanded to full path */ | |
| 2240 if (STRCMP(names[num_names - 1], p) == 0) | |
| 2241 vim_free(names[num_names]); | |
| 2242 else | |
| 2243 ++num_names; | |
| 2244 # endif | |
| 2245 | |
| 2246 end: | |
| 2247 # ifndef WIN3264 | |
| 2248 curbuf->b_shortname = shortname; | |
| 2249 # endif | |
| 2250 | |
| 2251 return num_names; | |
| 2252 } | |
| 2253 | |
| 2254 /* | |
| 2255 * sync all memlines | |
| 2256 * | |
| 2257 * If 'check_file' is TRUE, check if original file exists and was not changed. | |
| 2258 * If 'check_char' is TRUE, stop syncing when character becomes available, but | |
| 2259 * always sync at least one block. | |
| 2260 */ | |
| 2261 void | |
|
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2262 ml_sync_all(int check_file, int check_char) |
| 7 | 2263 { |
| 2264 buf_T *buf; | |
| 2265 struct stat st; | |
| 2266 | |
| 2267 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
| 2268 { | |
| 2269 if (buf->b_ml.ml_mfp == NULL || buf->b_ml.ml_mfp->mf_fname == NULL) | |
| 2270 continue; /* no file */ | |
| 2271 | |
| 2272 ml_flush_line(buf); /* flush buffered line */ | |
| 2273 /* flush locked block */ | |
| 2274 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); | |
| 2275 if (bufIsChanged(buf) && check_file && mf_need_trans(buf->b_ml.ml_mfp) | |
| 2276 && buf->b_ffname != NULL) | |
| 2277 { | |
| 2278 /* | |
| 2279 * If the original file does not exist anymore or has been changed | |
| 2280 * call ml_preserve() to get rid of all negative numbered blocks. | |
| 2281 */ | |
| 2282 if (mch_stat((char *)buf->b_ffname, &st) == -1 | |
| 2283 || st.st_mtime != buf->b_mtime_read | |
|
2241
60da25e3aab7
Correct use of long instead of off_t for file size. (James Vega)
Bram Moolenaar <bram@vim.org>
parents:
2240
diff
changeset
|
2284 || st.st_size != buf->b_orig_size) |
| 7 | 2285 { |
| 2286 ml_preserve(buf, FALSE); | |
| 2287 did_check_timestamps = FALSE; | |
| 2288 need_check_timestamps = TRUE; /* give message later */ | |
| 2289 } | |
| 2290 } | |
| 2291 if (buf->b_ml.ml_mfp->mf_dirty) | |
| 2292 { | |
| 2293 (void)mf_sync(buf->b_ml.ml_mfp, (check_char ? MFS_STOP : 0) | |
| 2294 | (bufIsChanged(buf) ? MFS_FLUSH : 0)); | |
| 2295 if (check_char && ui_char_avail()) /* character available now */ | |
| 2296 break; | |
| 2297 } | |
| 2298 } | |
| 2299 } | |
| 2300 | |
| 2301 /* | |
| 2302 * sync one buffer, including negative blocks | |
| 2303 * | |
| 2304 * after this all the blocks are in the swap file | |
| 2305 * | |
| 2306 * Used for the :preserve command and when the original file has been | |
| 2307 * changed or deleted. | |
| 2308 * | |
| 2309 * when message is TRUE the success of preserving is reported | |
| 2310 */ | |
| 2311 void | |
|
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2312 ml_preserve(buf_T *buf, int message) |
| 7 | 2313 { |
| 2314 bhdr_T *hp; | |
| 2315 linenr_T lnum; | |
| 2316 memfile_T *mfp = buf->b_ml.ml_mfp; | |
| 2317 int status; | |
| 2318 int got_int_save = got_int; | |
| 2319 | |
| 2320 if (mfp == NULL || mfp->mf_fname == NULL) | |
| 2321 { | |
| 2322 if (message) | |
| 2323 EMSG(_("E313: Cannot preserve, there is no swap file")); | |
| 2324 return; | |
| 2325 } | |
| 2326 | |
| 2327 /* We only want to stop when interrupted here, not when interrupted | |
| 2328 * before. */ | |
| 2329 got_int = FALSE; | |
| 2330 | |
| 2331 ml_flush_line(buf); /* flush buffered line */ | |
| 2332 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
| 2333 status = mf_sync(mfp, MFS_ALL | MFS_FLUSH); | |
| 2334 | |
| 2335 /* stack is invalid after mf_sync(.., MFS_ALL) */ | |
| 2336 buf->b_ml.ml_stack_top = 0; | |
| 2337 | |
| 2338 /* | |
| 2339 * Some of the data blocks may have been changed from negative to | |
| 2340 * positive block number. In that case the pointer blocks need to be | |
| 2341 * updated. | |
| 2342 * | |
| 2343 * We don't know in which pointer block the references are, so we visit | |
| 2344 * all data blocks until there are no more translations to be done (or | |
| 2345 * we hit the end of the file, which can only happen in case a write fails, | |
| 2346 * e.g. when file system if full). | |
| 2347 * ml_find_line() does the work by translating the negative block numbers | |
| 2348 * when getting the first line of each data block. | |
| 2349 */ | |
| 2350 if (mf_need_trans(mfp) && !got_int) | |
| 2351 { | |
| 2352 lnum = 1; | |
| 2353 while (mf_need_trans(mfp) && lnum <= buf->b_ml.ml_line_count) | |
| 2354 { | |
| 2355 hp = ml_find_line(buf, lnum, ML_FIND); | |
| 2356 if (hp == NULL) | |
| 2357 { | |
| 2358 status = FAIL; | |
| 2359 goto theend; | |
| 2360 } | |
| 2361 CHECK(buf->b_ml.ml_locked_low != lnum, "low != lnum"); | |
| 2362 lnum = buf->b_ml.ml_locked_high + 1; | |
| 2363 } | |
| 2364 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
| 2365 /* sync the updated pointer blocks */ | |
| 2366 if (mf_sync(mfp, MFS_ALL | MFS_FLUSH) == FAIL) | |
| 2367 status = FAIL; | |
| 2368 buf->b_ml.ml_stack_top = 0; /* stack is invalid now */ | |
| 2369 } | |
| 2370 theend: | |
| 2371 got_int |= got_int_save; | |
| 2372 | |
| 2373 if (message) | |
| 2374 { | |
| 2375 if (status == OK) | |
| 2376 MSG(_("File preserved")); | |
| 2377 else | |
| 2378 EMSG(_("E314: Preserve failed")); | |
| 2379 } | |
| 2380 } | |
| 2381 | |
| 2382 /* | |
| 2383 * NOTE: The pointer returned by the ml_get_*() functions only remains valid | |
| 2384 * until the next call! | |
| 2385 * line1 = ml_get(1); | |
| 2386 * line2 = ml_get(2); // line1 is now invalid! | |
| 2387 * Make a copy of the line if necessary. | |
| 2388 */ | |
| 2389 /* | |
| 2657 | 2390 * Return a pointer to a (read-only copy of a) line. |
| 7 | 2391 * |
| 2392 * On failure an error message is given and IObuff is returned (to avoid | |
| 2393 * having to check for error everywhere). | |
| 2394 */ | |
| 2395 char_u * | |
|
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41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2396 ml_get(linenr_T lnum) |
| 7 | 2397 { |
| 2398 return ml_get_buf(curbuf, lnum, FALSE); | |
| 2399 } | |
| 2400 | |
| 2401 /* | |
| 2657 | 2402 * Return pointer to position "pos". |
| 7 | 2403 */ |
| 2404 char_u * | |
|
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41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2405 ml_get_pos(pos_T *pos) |
| 7 | 2406 { |
| 2407 return (ml_get_buf(curbuf, pos->lnum, FALSE) + pos->col); | |
| 2408 } | |
| 2409 | |
| 2410 /* | |
| 2657 | 2411 * Return pointer to cursor line. |
| 7 | 2412 */ |
| 2413 char_u * | |
|
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2414 ml_get_curline(void) |
| 7 | 2415 { |
| 2416 return ml_get_buf(curbuf, curwin->w_cursor.lnum, FALSE); | |
| 2417 } | |
| 2418 | |
| 2419 /* | |
| 2657 | 2420 * Return pointer to cursor position. |
| 7 | 2421 */ |
| 2422 char_u * | |
|
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changeset
|
2423 ml_get_cursor(void) |
| 7 | 2424 { |
| 2425 return (ml_get_buf(curbuf, curwin->w_cursor.lnum, FALSE) + | |
| 2426 curwin->w_cursor.col); | |
| 2427 } | |
| 2428 | |
| 2429 /* | |
| 2657 | 2430 * Return a pointer to a line in a specific buffer |
| 7 | 2431 * |
| 2432 * "will_change": if TRUE mark the buffer dirty (chars in the line will be | |
| 2433 * changed) | |
| 2434 */ | |
| 2435 char_u * | |
|
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|
2436 ml_get_buf( |
|
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2437 buf_T *buf, |
|
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2438 linenr_T lnum, |
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|
2439 int will_change) /* line will be changed */ |
| 7 | 2440 { |
| 1068 | 2441 bhdr_T *hp; |
| 2442 DATA_BL *dp; | |
| 2443 char_u *ptr; | |
| 2444 static int recursive = 0; | |
| 7 | 2445 |
| 2446 if (lnum > buf->b_ml.ml_line_count) /* invalid line number */ | |
| 2447 { | |
| 1068 | 2448 if (recursive == 0) |
| 2449 { | |
| 2450 /* Avoid giving this message for a recursive call, may happen when | |
| 2451 * the GUI redraws part of the text. */ | |
| 2452 ++recursive; | |
| 2453 EMSGN(_("E315: ml_get: invalid lnum: %ld"), lnum); | |
| 2454 --recursive; | |
| 2455 } | |
| 7 | 2456 errorret: |
| 2457 STRCPY(IObuff, "???"); | |
| 2458 return IObuff; | |
| 2459 } | |
| 2460 if (lnum <= 0) /* pretend line 0 is line 1 */ | |
| 2461 lnum = 1; | |
| 2462 | |
| 2463 if (buf->b_ml.ml_mfp == NULL) /* there are no lines */ | |
| 2464 return (char_u *)""; | |
| 2465 | |
|
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2466 /* |
|
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2467 * See if it is the same line as requested last time. |
|
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2468 * Otherwise may need to flush last used line. |
|
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2469 * Don't use the last used line when 'swapfile' is reset, need to load all |
|
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2470 * blocks. |
|
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2471 */ |
| 1066 | 2472 if (buf->b_ml.ml_line_lnum != lnum || mf_dont_release) |
| 7 | 2473 { |
| 2474 ml_flush_line(buf); | |
| 2475 | |
| 2476 /* | |
| 2477 * Find the data block containing the line. | |
| 2478 * This also fills the stack with the blocks from the root to the data | |
| 2479 * block and releases any locked block. | |
| 2480 */ | |
| 2481 if ((hp = ml_find_line(buf, lnum, ML_FIND)) == NULL) | |
| 2482 { | |
| 1068 | 2483 if (recursive == 0) |
| 2484 { | |
| 2485 /* Avoid giving this message for a recursive call, may happen | |
| 2486 * when the GUI redraws part of the text. */ | |
| 2487 ++recursive; | |
| 2488 EMSGN(_("E316: ml_get: cannot find line %ld"), lnum); | |
| 2489 --recursive; | |
| 2490 } | |
| 7 | 2491 goto errorret; |
| 2492 } | |
| 2493 | |
| 2494 dp = (DATA_BL *)(hp->bh_data); | |
| 2495 | |
| 2496 ptr = (char_u *)dp + ((dp->db_index[lnum - buf->b_ml.ml_locked_low]) & DB_INDEX_MASK); | |
| 2497 buf->b_ml.ml_line_ptr = ptr; | |
| 2498 buf->b_ml.ml_line_lnum = lnum; | |
| 2499 buf->b_ml.ml_flags &= ~ML_LINE_DIRTY; | |
| 2500 } | |
| 2501 if (will_change) | |
| 2502 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 2503 | |
| 2504 return buf->b_ml.ml_line_ptr; | |
| 2505 } | |
| 2506 | |
| 2507 /* | |
| 2508 * Check if a line that was just obtained by a call to ml_get | |
| 2509 * is in allocated memory. | |
| 2510 */ | |
| 2511 int | |
|
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|
2512 ml_line_alloced(void) |
| 7 | 2513 { |
| 2514 return (curbuf->b_ml.ml_flags & ML_LINE_DIRTY); | |
| 2515 } | |
| 2516 | |
| 2517 /* | |
| 2518 * Append a line after lnum (may be 0 to insert a line in front of the file). | |
| 2519 * "line" does not need to be allocated, but can't be another line in a | |
| 2520 * buffer, unlocking may make it invalid. | |
| 2521 * | |
| 2522 * newfile: TRUE when starting to edit a new file, meaning that pe_old_lnum | |
| 2523 * will be set for recovery | |
| 2524 * Check: The caller of this function should probably also call | |
| 2525 * appended_lines(). | |
| 2526 * | |
| 2527 * return FAIL for failure, OK otherwise | |
| 2528 */ | |
| 2529 int | |
|
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2530 ml_append( |
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2531 linenr_T lnum, /* append after this line (can be 0) */ |
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2532 char_u *line, /* text of the new line */ |
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|
2533 colnr_T len, /* length of new line, including NUL, or 0 */ |
|
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2534 int newfile) /* flag, see above */ |
| 7 | 2535 { |
| 2536 /* When starting up, we might still need to create the memfile */ | |
|
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2537 if (curbuf->b_ml.ml_mfp == NULL && open_buffer(FALSE, NULL, 0) == FAIL) |
| 7 | 2538 return FAIL; |
| 2539 | |
| 2540 if (curbuf->b_ml.ml_line_lnum != 0) | |
| 2541 ml_flush_line(curbuf); | |
| 2542 return ml_append_int(curbuf, lnum, line, len, newfile, FALSE); | |
| 2543 } | |
| 2544 | |
| 748 | 2545 #if defined(FEAT_SPELL) || defined(PROTO) |
| 625 | 2546 /* |
| 2547 * Like ml_append() but for an arbitrary buffer. The buffer must already have | |
| 2548 * a memline. | |
| 2549 */ | |
| 2550 int | |
|
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2551 ml_append_buf( |
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|
2552 buf_T *buf, |
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2553 linenr_T lnum, /* append after this line (can be 0) */ |
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2554 char_u *line, /* text of the new line */ |
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diff
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|
2555 colnr_T len, /* length of new line, including NUL, or 0 */ |
|
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diff
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|
2556 int newfile) /* flag, see above */ |
| 625 | 2557 { |
| 2558 if (buf->b_ml.ml_mfp == NULL) | |
| 2559 return FAIL; | |
| 2560 | |
| 2561 if (buf->b_ml.ml_line_lnum != 0) | |
| 2562 ml_flush_line(buf); | |
| 2563 return ml_append_int(buf, lnum, line, len, newfile, FALSE); | |
| 2564 } | |
| 2565 #endif | |
| 2566 | |
| 7 | 2567 static int |
|
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|
2568 ml_append_int( |
|
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|
2569 buf_T *buf, |
|
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|
2570 linenr_T lnum, /* append after this line (can be 0) */ |
|
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diff
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|
2571 char_u *line, /* text of the new line */ |
|
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parents:
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diff
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|
2572 colnr_T len, /* length of line, including NUL, or 0 */ |
|
41789f16d6b2
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parents:
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diff
changeset
|
2573 int newfile, /* flag, see above */ |
|
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diff
changeset
|
2574 int mark) /* mark the new line */ |
| 7 | 2575 { |
| 2576 int i; | |
| 2577 int line_count; /* number of indexes in current block */ | |
| 2578 int offset; | |
| 2579 int from, to; | |
| 2580 int space_needed; /* space needed for new line */ | |
| 2581 int page_size; | |
| 2582 int page_count; | |
| 2583 int db_idx; /* index for lnum in data block */ | |
| 2584 bhdr_T *hp; | |
| 2585 memfile_T *mfp; | |
| 2586 DATA_BL *dp; | |
| 2587 PTR_BL *pp; | |
| 2588 infoptr_T *ip; | |
| 2589 | |
| 2590 /* lnum out of range */ | |
| 2591 if (lnum > buf->b_ml.ml_line_count || buf->b_ml.ml_mfp == NULL) | |
| 2592 return FAIL; | |
| 2593 | |
| 2594 if (lowest_marked && lowest_marked > lnum) | |
| 2595 lowest_marked = lnum + 1; | |
| 2596 | |
| 2597 if (len == 0) | |
| 2598 len = (colnr_T)STRLEN(line) + 1; /* space needed for the text */ | |
| 2599 space_needed = len + INDEX_SIZE; /* space needed for text + index */ | |
| 2600 | |
| 2601 mfp = buf->b_ml.ml_mfp; | |
| 2602 page_size = mfp->mf_page_size; | |
| 2603 | |
| 2604 /* | |
| 2605 * find the data block containing the previous line | |
| 2606 * This also fills the stack with the blocks from the root to the data block | |
| 2607 * This also releases any locked block. | |
| 2608 */ | |
| 2609 if ((hp = ml_find_line(buf, lnum == 0 ? (linenr_T)1 : lnum, | |
| 2610 ML_INSERT)) == NULL) | |
| 2611 return FAIL; | |
| 2612 | |
| 2613 buf->b_ml.ml_flags &= ~ML_EMPTY; | |
| 2614 | |
| 2615 if (lnum == 0) /* got line one instead, correct db_idx */ | |
| 2616 db_idx = -1; /* careful, it is negative! */ | |
| 2617 else | |
| 2618 db_idx = lnum - buf->b_ml.ml_locked_low; | |
| 2619 /* get line count before the insertion */ | |
| 2620 line_count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low; | |
| 2621 | |
| 2622 dp = (DATA_BL *)(hp->bh_data); | |
| 2623 | |
| 2624 /* | |
| 2625 * If | |
| 2626 * - there is not enough room in the current block | |
| 2627 * - appending to the last line in the block | |
| 2628 * - not appending to the last line in the file | |
| 2629 * insert in front of the next block. | |
| 2630 */ | |
| 2631 if ((int)dp->db_free < space_needed && db_idx == line_count - 1 | |
| 2632 && lnum < buf->b_ml.ml_line_count) | |
| 2633 { | |
| 2634 /* | |
| 2635 * Now that the line is not going to be inserted in the block that we | |
| 2636 * expected, the line count has to be adjusted in the pointer blocks | |
| 2637 * by using ml_locked_lineadd. | |
| 2638 */ | |
| 2639 --(buf->b_ml.ml_locked_lineadd); | |
| 2640 --(buf->b_ml.ml_locked_high); | |
| 2641 if ((hp = ml_find_line(buf, lnum + 1, ML_INSERT)) == NULL) | |
| 2642 return FAIL; | |
| 2643 | |
| 2644 db_idx = -1; /* careful, it is negative! */ | |
| 2645 /* get line count before the insertion */ | |
| 2646 line_count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low; | |
| 2647 CHECK(buf->b_ml.ml_locked_low != lnum + 1, "locked_low != lnum + 1"); | |
| 2648 | |
| 2649 dp = (DATA_BL *)(hp->bh_data); | |
| 2650 } | |
| 2651 | |
| 2652 ++buf->b_ml.ml_line_count; | |
| 2653 | |
| 2654 if ((int)dp->db_free >= space_needed) /* enough room in data block */ | |
| 2655 { | |
| 2656 /* | |
| 2657 * Insert new line in existing data block, or in data block allocated above. | |
| 2658 */ | |
| 2659 dp->db_txt_start -= len; | |
| 2660 dp->db_free -= space_needed; | |
| 2661 ++(dp->db_line_count); | |
| 2662 | |
| 2663 /* | |
| 2664 * move the text of the lines that follow to the front | |
| 2665 * adjust the indexes of the lines that follow | |
| 2666 */ | |
| 2667 if (line_count > db_idx + 1) /* if there are following lines */ | |
| 2668 { | |
| 2669 /* | |
| 2670 * Offset is the start of the previous line. | |
| 2671 * This will become the character just after the new line. | |
| 2672 */ | |
| 2673 if (db_idx < 0) | |
| 2674 offset = dp->db_txt_end; | |
| 2675 else | |
| 2676 offset = ((dp->db_index[db_idx]) & DB_INDEX_MASK); | |
| 2677 mch_memmove((char *)dp + dp->db_txt_start, | |
| 2678 (char *)dp + dp->db_txt_start + len, | |
| 2679 (size_t)(offset - (dp->db_txt_start + len))); | |
| 2680 for (i = line_count - 1; i > db_idx; --i) | |
| 2681 dp->db_index[i + 1] = dp->db_index[i] - len; | |
| 2682 dp->db_index[db_idx + 1] = offset - len; | |
| 2683 } | |
| 2684 else /* add line at the end */ | |
| 2685 dp->db_index[db_idx + 1] = dp->db_txt_start; | |
| 2686 | |
| 2687 /* | |
| 2688 * copy the text into the block | |
| 2689 */ | |
| 2690 mch_memmove((char *)dp + dp->db_index[db_idx + 1], line, (size_t)len); | |
| 2691 if (mark) | |
| 2692 dp->db_index[db_idx + 1] |= DB_MARKED; | |
| 2693 | |
| 2694 /* | |
| 2695 * Mark the block dirty. | |
| 2696 */ | |
| 2697 buf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 2698 if (!newfile) | |
| 2699 buf->b_ml.ml_flags |= ML_LOCKED_POS; | |
| 2700 } | |
| 2701 else /* not enough space in data block */ | |
| 2702 { | |
| 2703 /* | |
| 2704 * If there is not enough room we have to create a new data block and copy some | |
| 2705 * lines into it. | |
| 2706 * Then we have to insert an entry in the pointer block. | |
| 2707 * If this pointer block also is full, we go up another block, and so on, up | |
| 2708 * to the root if necessary. | |
| 2709 * The line counts in the pointer blocks have already been adjusted by | |
| 2710 * ml_find_line(). | |
| 2711 */ | |
| 2712 long line_count_left, line_count_right; | |
| 2713 int page_count_left, page_count_right; | |
| 2714 bhdr_T *hp_left; | |
| 2715 bhdr_T *hp_right; | |
| 2716 bhdr_T *hp_new; | |
| 2717 int lines_moved; | |
| 2718 int data_moved = 0; /* init to shut up gcc */ | |
| 2719 int total_moved = 0; /* init to shut up gcc */ | |
| 2720 DATA_BL *dp_right, *dp_left; | |
| 2721 int stack_idx; | |
| 2722 int in_left; | |
| 2723 int lineadd; | |
| 2724 blocknr_T bnum_left, bnum_right; | |
| 2725 linenr_T lnum_left, lnum_right; | |
| 2726 int pb_idx; | |
| 2727 PTR_BL *pp_new; | |
| 2728 | |
| 2729 /* | |
| 2730 * We are going to allocate a new data block. Depending on the | |
| 2731 * situation it will be put to the left or right of the existing | |
| 2732 * block. If possible we put the new line in the left block and move | |
| 2733 * the lines after it to the right block. Otherwise the new line is | |
| 2734 * also put in the right block. This method is more efficient when | |
| 2735 * inserting a lot of lines at one place. | |
| 2736 */ | |
| 2737 if (db_idx < 0) /* left block is new, right block is existing */ | |
| 2738 { | |
| 2739 lines_moved = 0; | |
| 2740 in_left = TRUE; | |
| 2741 /* space_needed does not change */ | |
| 2742 } | |
| 2743 else /* left block is existing, right block is new */ | |
| 2744 { | |
| 2745 lines_moved = line_count - db_idx - 1; | |
| 2746 if (lines_moved == 0) | |
| 2747 in_left = FALSE; /* put new line in right block */ | |
| 2748 /* space_needed does not change */ | |
| 2749 else | |
| 2750 { | |
| 2751 data_moved = ((dp->db_index[db_idx]) & DB_INDEX_MASK) - | |
| 2752 dp->db_txt_start; | |
| 2753 total_moved = data_moved + lines_moved * INDEX_SIZE; | |
| 2754 if ((int)dp->db_free + total_moved >= space_needed) | |
| 2755 { | |
| 2756 in_left = TRUE; /* put new line in left block */ | |
| 2757 space_needed = total_moved; | |
| 2758 } | |
| 2759 else | |
| 2760 { | |
| 2761 in_left = FALSE; /* put new line in right block */ | |
| 2762 space_needed += total_moved; | |
| 2763 } | |
| 2764 } | |
| 2765 } | |
| 2766 | |
| 2767 page_count = ((space_needed + HEADER_SIZE) + page_size - 1) / page_size; | |
| 2768 if ((hp_new = ml_new_data(mfp, newfile, page_count)) == NULL) | |
| 2769 { | |
| 2770 /* correct line counts in pointer blocks */ | |
| 2771 --(buf->b_ml.ml_locked_lineadd); | |
| 2772 --(buf->b_ml.ml_locked_high); | |
| 2773 return FAIL; | |
| 2774 } | |
| 2775 if (db_idx < 0) /* left block is new */ | |
| 2776 { | |
| 2777 hp_left = hp_new; | |
| 2778 hp_right = hp; | |
| 2779 line_count_left = 0; | |
| 2780 line_count_right = line_count; | |
| 2781 } | |
| 2782 else /* right block is new */ | |
| 2783 { | |
| 2784 hp_left = hp; | |
| 2785 hp_right = hp_new; | |
| 2786 line_count_left = line_count; | |
| 2787 line_count_right = 0; | |
| 2788 } | |
| 2789 dp_right = (DATA_BL *)(hp_right->bh_data); | |
| 2790 dp_left = (DATA_BL *)(hp_left->bh_data); | |
| 2791 bnum_left = hp_left->bh_bnum; | |
| 2792 bnum_right = hp_right->bh_bnum; | |
| 2793 page_count_left = hp_left->bh_page_count; | |
| 2794 page_count_right = hp_right->bh_page_count; | |
| 2795 | |
| 2796 /* | |
| 2797 * May move the new line into the right/new block. | |
| 2798 */ | |
| 2799 if (!in_left) | |
| 2800 { | |
| 2801 dp_right->db_txt_start -= len; | |
| 2802 dp_right->db_free -= len + INDEX_SIZE; | |
| 2803 dp_right->db_index[0] = dp_right->db_txt_start; | |
| 2804 if (mark) | |
| 2805 dp_right->db_index[0] |= DB_MARKED; | |
| 2806 | |
| 2807 mch_memmove((char *)dp_right + dp_right->db_txt_start, | |
| 2808 line, (size_t)len); | |
| 2809 ++line_count_right; | |
| 2810 } | |
| 2811 /* | |
| 2812 * may move lines from the left/old block to the right/new one. | |
| 2813 */ | |
| 2814 if (lines_moved) | |
| 2815 { | |
| 2816 /* | |
| 2817 */ | |
| 2818 dp_right->db_txt_start -= data_moved; | |
| 2819 dp_right->db_free -= total_moved; | |
| 2820 mch_memmove((char *)dp_right + dp_right->db_txt_start, | |
| 2821 (char *)dp_left + dp_left->db_txt_start, | |
| 2822 (size_t)data_moved); | |
| 2823 offset = dp_right->db_txt_start - dp_left->db_txt_start; | |
| 2824 dp_left->db_txt_start += data_moved; | |
| 2825 dp_left->db_free += total_moved; | |
| 2826 | |
| 2827 /* | |
| 2828 * update indexes in the new block | |
| 2829 */ | |
| 2830 for (to = line_count_right, from = db_idx + 1; | |
| 2831 from < line_count_left; ++from, ++to) | |
| 2832 dp_right->db_index[to] = dp->db_index[from] + offset; | |
| 2833 line_count_right += lines_moved; | |
| 2834 line_count_left -= lines_moved; | |
| 2835 } | |
| 2836 | |
| 2837 /* | |
| 2838 * May move the new line into the left (old or new) block. | |
| 2839 */ | |
| 2840 if (in_left) | |
| 2841 { | |
| 2842 dp_left->db_txt_start -= len; | |
| 2843 dp_left->db_free -= len + INDEX_SIZE; | |
| 2844 dp_left->db_index[line_count_left] = dp_left->db_txt_start; | |
| 2845 if (mark) | |
| 2846 dp_left->db_index[line_count_left] |= DB_MARKED; | |
| 2847 mch_memmove((char *)dp_left + dp_left->db_txt_start, | |
| 2848 line, (size_t)len); | |
| 2849 ++line_count_left; | |
| 2850 } | |
| 2851 | |
| 2852 if (db_idx < 0) /* left block is new */ | |
| 2853 { | |
| 2854 lnum_left = lnum + 1; | |
| 2855 lnum_right = 0; | |
| 2856 } | |
| 2857 else /* right block is new */ | |
| 2858 { | |
| 2859 lnum_left = 0; | |
| 2860 if (in_left) | |
| 2861 lnum_right = lnum + 2; | |
| 2862 else | |
| 2863 lnum_right = lnum + 1; | |
| 2864 } | |
| 2865 dp_left->db_line_count = line_count_left; | |
| 2866 dp_right->db_line_count = line_count_right; | |
| 2867 | |
| 2868 /* | |
| 2869 * release the two data blocks | |
| 2870 * The new one (hp_new) already has a correct blocknumber. | |
| 2871 * The old one (hp, in ml_locked) gets a positive blocknumber if | |
| 2872 * we changed it and we are not editing a new file. | |
| 2873 */ | |
| 2874 if (lines_moved || in_left) | |
| 2875 buf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 2876 if (!newfile && db_idx >= 0 && in_left) | |
| 2877 buf->b_ml.ml_flags |= ML_LOCKED_POS; | |
| 2878 mf_put(mfp, hp_new, TRUE, FALSE); | |
| 2879 | |
| 2880 /* | |
| 2881 * flush the old data block | |
| 2882 * set ml_locked_lineadd to 0, because the updating of the | |
| 2883 * pointer blocks is done below | |
| 2884 */ | |
| 2885 lineadd = buf->b_ml.ml_locked_lineadd; | |
| 2886 buf->b_ml.ml_locked_lineadd = 0; | |
| 2887 ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush data block */ | |
| 2888 | |
| 2889 /* | |
| 2890 * update pointer blocks for the new data block | |
| 2891 */ | |
| 2892 for (stack_idx = buf->b_ml.ml_stack_top - 1; stack_idx >= 0; | |
| 2893 --stack_idx) | |
| 2894 { | |
| 2895 ip = &(buf->b_ml.ml_stack[stack_idx]); | |
| 2896 pb_idx = ip->ip_index; | |
| 2897 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
| 2898 return FAIL; | |
| 2899 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
| 2900 if (pp->pb_id != PTR_ID) | |
| 2901 { | |
| 2902 EMSG(_("E317: pointer block id wrong 3")); | |
| 2903 mf_put(mfp, hp, FALSE, FALSE); | |
| 2904 return FAIL; | |
| 2905 } | |
| 2906 /* | |
| 2907 * TODO: If the pointer block is full and we are adding at the end | |
| 2908 * try to insert in front of the next block | |
| 2909 */ | |
| 2910 /* block not full, add one entry */ | |
| 2911 if (pp->pb_count < pp->pb_count_max) | |
| 2912 { | |
| 2913 if (pb_idx + 1 < (int)pp->pb_count) | |
| 2914 mch_memmove(&pp->pb_pointer[pb_idx + 2], | |
| 2915 &pp->pb_pointer[pb_idx + 1], | |
| 2916 (size_t)(pp->pb_count - pb_idx - 1) * sizeof(PTR_EN)); | |
| 2917 ++pp->pb_count; | |
| 2918 pp->pb_pointer[pb_idx].pe_line_count = line_count_left; | |
| 2919 pp->pb_pointer[pb_idx].pe_bnum = bnum_left; | |
| 2920 pp->pb_pointer[pb_idx].pe_page_count = page_count_left; | |
| 2921 pp->pb_pointer[pb_idx + 1].pe_line_count = line_count_right; | |
| 2922 pp->pb_pointer[pb_idx + 1].pe_bnum = bnum_right; | |
| 2923 pp->pb_pointer[pb_idx + 1].pe_page_count = page_count_right; | |
| 2924 | |
| 2925 if (lnum_left != 0) | |
| 2926 pp->pb_pointer[pb_idx].pe_old_lnum = lnum_left; | |
| 2927 if (lnum_right != 0) | |
| 2928 pp->pb_pointer[pb_idx + 1].pe_old_lnum = lnum_right; | |
| 2929 | |
| 2930 mf_put(mfp, hp, TRUE, FALSE); | |
| 2931 buf->b_ml.ml_stack_top = stack_idx + 1; /* truncate stack */ | |
| 2932 | |
| 2933 if (lineadd) | |
| 2934 { | |
| 2935 --(buf->b_ml.ml_stack_top); | |
| 1167 | 2936 /* fix line count for rest of blocks in the stack */ |
| 7 | 2937 ml_lineadd(buf, lineadd); |
| 2938 /* fix stack itself */ | |
| 2939 buf->b_ml.ml_stack[buf->b_ml.ml_stack_top].ip_high += | |
| 2940 lineadd; | |
| 2941 ++(buf->b_ml.ml_stack_top); | |
| 2942 } | |
| 2943 | |
| 2944 /* | |
| 2945 * We are finished, break the loop here. | |
| 2946 */ | |
| 2947 break; | |
| 2948 } | |
| 2949 else /* pointer block full */ | |
| 2950 { | |
| 2951 /* | |
| 2952 * split the pointer block | |
| 2953 * allocate a new pointer block | |
| 2954 * move some of the pointer into the new block | |
| 2955 * prepare for updating the parent block | |
| 2956 */ | |
| 2957 for (;;) /* do this twice when splitting block 1 */ | |
| 2958 { | |
| 2959 hp_new = ml_new_ptr(mfp); | |
| 2960 if (hp_new == NULL) /* TODO: try to fix tree */ | |
| 2961 return FAIL; | |
| 2962 pp_new = (PTR_BL *)(hp_new->bh_data); | |
| 2963 | |
| 2964 if (hp->bh_bnum != 1) | |
| 2965 break; | |
| 2966 | |
| 2967 /* | |
| 2968 * if block 1 becomes full the tree is given an extra level | |
| 2969 * The pointers from block 1 are moved into the new block. | |
| 2970 * block 1 is updated to point to the new block | |
| 2971 * then continue to split the new block | |
| 2972 */ | |
| 2973 mch_memmove(pp_new, pp, (size_t)page_size); | |
| 2974 pp->pb_count = 1; | |
| 2975 pp->pb_pointer[0].pe_bnum = hp_new->bh_bnum; | |
| 2976 pp->pb_pointer[0].pe_line_count = buf->b_ml.ml_line_count; | |
| 2977 pp->pb_pointer[0].pe_old_lnum = 1; | |
| 2978 pp->pb_pointer[0].pe_page_count = 1; | |
| 2979 mf_put(mfp, hp, TRUE, FALSE); /* release block 1 */ | |
| 2980 hp = hp_new; /* new block is to be split */ | |
| 2981 pp = pp_new; | |
| 2982 CHECK(stack_idx != 0, _("stack_idx should be 0")); | |
| 2983 ip->ip_index = 0; | |
| 2984 ++stack_idx; /* do block 1 again later */ | |
| 2985 } | |
| 2986 /* | |
| 2987 * move the pointers after the current one to the new block | |
| 2988 * If there are none, the new entry will be in the new block. | |
| 2989 */ | |
| 2990 total_moved = pp->pb_count - pb_idx - 1; | |
| 2991 if (total_moved) | |
| 2992 { | |
| 2993 mch_memmove(&pp_new->pb_pointer[0], | |
| 2994 &pp->pb_pointer[pb_idx + 1], | |
| 2995 (size_t)(total_moved) * sizeof(PTR_EN)); | |
| 2996 pp_new->pb_count = total_moved; | |
| 2997 pp->pb_count -= total_moved - 1; | |
| 2998 pp->pb_pointer[pb_idx + 1].pe_bnum = bnum_right; | |
| 2999 pp->pb_pointer[pb_idx + 1].pe_line_count = line_count_right; | |
| 3000 pp->pb_pointer[pb_idx + 1].pe_page_count = page_count_right; | |
| 3001 if (lnum_right) | |
| 3002 pp->pb_pointer[pb_idx + 1].pe_old_lnum = lnum_right; | |
| 3003 } | |
| 3004 else | |
| 3005 { | |
| 3006 pp_new->pb_count = 1; | |
| 3007 pp_new->pb_pointer[0].pe_bnum = bnum_right; | |
| 3008 pp_new->pb_pointer[0].pe_line_count = line_count_right; | |
| 3009 pp_new->pb_pointer[0].pe_page_count = page_count_right; | |
| 3010 pp_new->pb_pointer[0].pe_old_lnum = lnum_right; | |
| 3011 } | |
| 3012 pp->pb_pointer[pb_idx].pe_bnum = bnum_left; | |
| 3013 pp->pb_pointer[pb_idx].pe_line_count = line_count_left; | |
| 3014 pp->pb_pointer[pb_idx].pe_page_count = page_count_left; | |
| 3015 if (lnum_left) | |
| 3016 pp->pb_pointer[pb_idx].pe_old_lnum = lnum_left; | |
| 3017 lnum_left = 0; | |
| 3018 lnum_right = 0; | |
| 3019 | |
| 3020 /* | |
| 3021 * recompute line counts | |
| 3022 */ | |
| 3023 line_count_right = 0; | |
| 3024 for (i = 0; i < (int)pp_new->pb_count; ++i) | |
| 3025 line_count_right += pp_new->pb_pointer[i].pe_line_count; | |
| 3026 line_count_left = 0; | |
| 3027 for (i = 0; i < (int)pp->pb_count; ++i) | |
| 3028 line_count_left += pp->pb_pointer[i].pe_line_count; | |
| 3029 | |
| 3030 bnum_left = hp->bh_bnum; | |
| 3031 bnum_right = hp_new->bh_bnum; | |
| 3032 page_count_left = 1; | |
| 3033 page_count_right = 1; | |
| 3034 mf_put(mfp, hp, TRUE, FALSE); | |
| 3035 mf_put(mfp, hp_new, TRUE, FALSE); | |
| 3036 } | |
| 3037 } | |
| 3038 | |
| 3039 /* | |
| 3040 * Safety check: fallen out of for loop? | |
| 3041 */ | |
| 3042 if (stack_idx < 0) | |
| 3043 { | |
| 3044 EMSG(_("E318: Updated too many blocks?")); | |
| 3045 buf->b_ml.ml_stack_top = 0; /* invalidate stack */ | |
| 3046 } | |
| 3047 } | |
| 3048 | |
| 3049 #ifdef FEAT_BYTEOFF | |
| 3050 /* The line was inserted below 'lnum' */ | |
| 3051 ml_updatechunk(buf, lnum + 1, (long)len, ML_CHNK_ADDLINE); | |
| 3052 #endif | |
| 3053 #ifdef FEAT_NETBEANS_INTG | |
| 2210 | 3054 if (netbeans_active()) |
| 7 | 3055 { |
| 3056 if (STRLEN(line) > 0) | |
| 835 | 3057 netbeans_inserted(buf, lnum+1, (colnr_T)0, line, (int)STRLEN(line)); |
| 34 | 3058 netbeans_inserted(buf, lnum+1, (colnr_T)STRLEN(line), |
| 7 | 3059 (char_u *)"\n", 1); |
| 3060 } | |
| 3061 #endif | |
|
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5d2c84be23b5
commit https://github.com/vim/vim/commit/99ef06296f3c37490511c03786a2c8672e015c56
Christian Brabandt <cb@256bit.org>
parents:
8212
diff
changeset
|
3062 #ifdef FEAT_CHANNEL |
|
5d2c84be23b5
commit https://github.com/vim/vim/commit/99ef06296f3c37490511c03786a2c8672e015c56
Christian Brabandt <cb@256bit.org>
parents:
8212
diff
changeset
|
3063 if (buf->b_write_to_channel) |
|
5d2c84be23b5
commit https://github.com/vim/vim/commit/99ef06296f3c37490511c03786a2c8672e015c56
Christian Brabandt <cb@256bit.org>
parents:
8212
diff
changeset
|
3064 channel_write_new_lines(buf); |
|
5d2c84be23b5
commit https://github.com/vim/vim/commit/99ef06296f3c37490511c03786a2c8672e015c56
Christian Brabandt <cb@256bit.org>
parents:
8212
diff
changeset
|
3065 #endif |
|
5d2c84be23b5
commit https://github.com/vim/vim/commit/99ef06296f3c37490511c03786a2c8672e015c56
Christian Brabandt <cb@256bit.org>
parents:
8212
diff
changeset
|
3066 |
| 7 | 3067 return OK; |
| 3068 } | |
| 3069 | |
| 3070 /* | |
| 625 | 3071 * Replace line lnum, with buffering, in current buffer. |
| 7 | 3072 * |
| 720 | 3073 * If "copy" is TRUE, make a copy of the line, otherwise the line has been |
| 7 | 3074 * copied to allocated memory already. |
| 3075 * | |
| 3076 * Check: The caller of this function should probably also call | |
| 3077 * changed_lines(), unless update_screen(NOT_VALID) is used. | |
| 3078 * | |
| 3079 * return FAIL for failure, OK otherwise | |
| 3080 */ | |
| 3081 int | |
|
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41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3082 ml_replace(linenr_T lnum, char_u *line, int copy) |
| 7 | 3083 { |
| 3084 if (line == NULL) /* just checking... */ | |
| 3085 return FAIL; | |
| 3086 | |
| 3087 /* 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
|
3088 if (curbuf->b_ml.ml_mfp == NULL && open_buffer(FALSE, NULL, 0) == FAIL) |
| 7 | 3089 return FAIL; |
| 3090 | |
| 3091 if (copy && (line = vim_strsave(line)) == NULL) /* allocate memory */ | |
| 3092 return FAIL; | |
| 3093 #ifdef FEAT_NETBEANS_INTG | |
| 2210 | 3094 if (netbeans_active()) |
| 7 | 3095 { |
| 3096 netbeans_removed(curbuf, lnum, 0, (long)STRLEN(ml_get(lnum))); | |
| 835 | 3097 netbeans_inserted(curbuf, lnum, 0, line, (int)STRLEN(line)); |
| 7 | 3098 } |
| 3099 #endif | |
| 3100 if (curbuf->b_ml.ml_line_lnum != lnum) /* other line buffered */ | |
| 3101 ml_flush_line(curbuf); /* flush it */ | |
| 3102 else if (curbuf->b_ml.ml_flags & ML_LINE_DIRTY) /* same line allocated */ | |
| 3103 vim_free(curbuf->b_ml.ml_line_ptr); /* free it */ | |
| 3104 curbuf->b_ml.ml_line_ptr = line; | |
| 3105 curbuf->b_ml.ml_line_lnum = lnum; | |
| 3106 curbuf->b_ml.ml_flags = (curbuf->b_ml.ml_flags | ML_LINE_DIRTY) & ~ML_EMPTY; | |
| 3107 | |
| 3108 return OK; | |
| 3109 } | |
| 3110 | |
| 3111 /* | |
| 625 | 3112 * Delete line 'lnum' in the current buffer. |
| 7 | 3113 * |
| 3114 * Check: The caller of this function should probably also call | |
| 3115 * deleted_lines() after this. | |
| 3116 * | |
| 3117 * return FAIL for failure, OK otherwise | |
| 3118 */ | |
| 3119 int | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3120 ml_delete(linenr_T lnum, int message) |
| 7 | 3121 { |
| 3122 ml_flush_line(curbuf); | |
| 3123 return ml_delete_int(curbuf, lnum, message); | |
| 3124 } | |
| 3125 | |
| 3126 static int | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3127 ml_delete_int(buf_T *buf, linenr_T lnum, int message) |
| 7 | 3128 { |
| 3129 bhdr_T *hp; | |
| 3130 memfile_T *mfp; | |
| 3131 DATA_BL *dp; | |
| 3132 PTR_BL *pp; | |
| 3133 infoptr_T *ip; | |
| 3134 int count; /* number of entries in block */ | |
| 3135 int idx; | |
| 3136 int stack_idx; | |
| 3137 int text_start; | |
| 3138 int line_start; | |
| 3139 long line_size; | |
| 3140 int i; | |
| 3141 | |
| 3142 if (lnum < 1 || lnum > buf->b_ml.ml_line_count) | |
| 3143 return FAIL; | |
| 3144 | |
| 3145 if (lowest_marked && lowest_marked > lnum) | |
| 3146 lowest_marked--; | |
| 3147 | |
| 3148 /* | |
| 3149 * If the file becomes empty the last line is replaced by an empty line. | |
| 3150 */ | |
| 3151 if (buf->b_ml.ml_line_count == 1) /* file becomes empty */ | |
| 3152 { | |
| 3153 if (message | |
| 3154 #ifdef FEAT_NETBEANS_INTG | |
| 3155 && !netbeansSuppressNoLines | |
| 3156 #endif | |
| 3157 ) | |
| 680 | 3158 set_keep_msg((char_u *)_(no_lines_msg), 0); |
| 3159 | |
| 4352 | 3160 /* FEAT_BYTEOFF already handled in there, don't worry 'bout it below */ |
| 7 | 3161 i = ml_replace((linenr_T)1, (char_u *)"", TRUE); |
| 3162 buf->b_ml.ml_flags |= ML_EMPTY; | |
| 3163 | |
| 3164 return i; | |
| 3165 } | |
| 3166 | |
| 3167 /* | |
| 3168 * find the data block containing the line | |
| 3169 * This also fills the stack with the blocks from the root to the data block | |
| 3170 * This also releases any locked block. | |
| 3171 */ | |
| 3172 mfp = buf->b_ml.ml_mfp; | |
| 3173 if (mfp == NULL) | |
| 3174 return FAIL; | |
| 3175 | |
| 3176 if ((hp = ml_find_line(buf, lnum, ML_DELETE)) == NULL) | |
| 3177 return FAIL; | |
| 3178 | |
| 3179 dp = (DATA_BL *)(hp->bh_data); | |
| 3180 /* compute line count before the delete */ | |
| 3181 count = (long)(buf->b_ml.ml_locked_high) | |
| 3182 - (long)(buf->b_ml.ml_locked_low) + 2; | |
| 3183 idx = lnum - buf->b_ml.ml_locked_low; | |
| 3184 | |
| 3185 --buf->b_ml.ml_line_count; | |
| 3186 | |
| 3187 line_start = ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 3188 if (idx == 0) /* first line in block, text at the end */ | |
| 3189 line_size = dp->db_txt_end - line_start; | |
| 3190 else | |
| 3191 line_size = ((dp->db_index[idx - 1]) & DB_INDEX_MASK) - line_start; | |
| 3192 | |
| 3193 #ifdef FEAT_NETBEANS_INTG | |
| 2210 | 3194 if (netbeans_active()) |
| 34 | 3195 netbeans_removed(buf, lnum, 0, (long)line_size); |
| 7 | 3196 #endif |
| 3197 | |
| 3198 /* | |
| 3199 * special case: If there is only one line in the data block it becomes empty. | |
| 3200 * Then we have to remove the entry, pointing to this data block, from the | |
| 3201 * pointer block. If this pointer block also becomes empty, we go up another | |
| 3202 * block, and so on, up to the root if necessary. | |
| 3203 * The line counts in the pointer blocks have already been adjusted by | |
| 3204 * ml_find_line(). | |
| 3205 */ | |
| 3206 if (count == 1) | |
| 3207 { | |
| 3208 mf_free(mfp, hp); /* free the data block */ | |
| 3209 buf->b_ml.ml_locked = NULL; | |
| 3210 | |
| 2823 | 3211 for (stack_idx = buf->b_ml.ml_stack_top - 1; stack_idx >= 0; |
| 3212 --stack_idx) | |
| 7 | 3213 { |
| 3214 buf->b_ml.ml_stack_top = 0; /* stack is invalid when failing */ | |
| 3215 ip = &(buf->b_ml.ml_stack[stack_idx]); | |
| 3216 idx = ip->ip_index; | |
| 3217 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
| 3218 return FAIL; | |
| 3219 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
| 3220 if (pp->pb_id != PTR_ID) | |
| 3221 { | |
| 3222 EMSG(_("E317: pointer block id wrong 4")); | |
| 3223 mf_put(mfp, hp, FALSE, FALSE); | |
| 3224 return FAIL; | |
| 3225 } | |
| 3226 count = --(pp->pb_count); | |
| 3227 if (count == 0) /* the pointer block becomes empty! */ | |
| 3228 mf_free(mfp, hp); | |
| 3229 else | |
| 3230 { | |
| 3231 if (count != idx) /* move entries after the deleted one */ | |
| 3232 mch_memmove(&pp->pb_pointer[idx], &pp->pb_pointer[idx + 1], | |
| 3233 (size_t)(count - idx) * sizeof(PTR_EN)); | |
| 3234 mf_put(mfp, hp, TRUE, FALSE); | |
| 3235 | |
| 3236 buf->b_ml.ml_stack_top = stack_idx; /* truncate stack */ | |
| 1167 | 3237 /* fix line count for rest of blocks in the stack */ |
| 3238 if (buf->b_ml.ml_locked_lineadd != 0) | |
| 7 | 3239 { |
| 3240 ml_lineadd(buf, buf->b_ml.ml_locked_lineadd); | |
| 3241 buf->b_ml.ml_stack[buf->b_ml.ml_stack_top].ip_high += | |
| 1167 | 3242 buf->b_ml.ml_locked_lineadd; |
| 7 | 3243 } |
| 3244 ++(buf->b_ml.ml_stack_top); | |
| 3245 | |
| 3246 break; | |
| 3247 } | |
| 3248 } | |
| 3249 CHECK(stack_idx < 0, _("deleted block 1?")); | |
| 3250 } | |
| 3251 else | |
| 3252 { | |
| 3253 /* | |
| 3254 * delete the text by moving the next lines forwards | |
| 3255 */ | |
| 3256 text_start = dp->db_txt_start; | |
| 3257 mch_memmove((char *)dp + text_start + line_size, | |
| 3258 (char *)dp + text_start, (size_t)(line_start - text_start)); | |
| 3259 | |
| 3260 /* | |
| 3261 * delete the index by moving the next indexes backwards | |
| 3262 * Adjust the indexes for the text movement. | |
| 3263 */ | |
| 3264 for (i = idx; i < count - 1; ++i) | |
| 3265 dp->db_index[i] = dp->db_index[i + 1] + line_size; | |
| 3266 | |
| 3267 dp->db_free += line_size + INDEX_SIZE; | |
| 3268 dp->db_txt_start += line_size; | |
| 3269 --(dp->db_line_count); | |
| 3270 | |
| 3271 /* | |
| 3272 * mark the block dirty and make sure it is in the file (for recovery) | |
| 3273 */ | |
| 3274 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 3275 } | |
| 3276 | |
| 3277 #ifdef FEAT_BYTEOFF | |
| 3278 ml_updatechunk(buf, lnum, line_size, ML_CHNK_DELLINE); | |
| 3279 #endif | |
| 3280 return OK; | |
| 3281 } | |
| 3282 | |
| 3283 /* | |
| 3284 * set the B_MARKED flag for line 'lnum' | |
| 3285 */ | |
| 3286 void | |
|
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7803
diff
changeset
|
3287 ml_setmarked(linenr_T lnum) |
| 7 | 3288 { |
| 3289 bhdr_T *hp; | |
| 3290 DATA_BL *dp; | |
| 3291 /* invalid line number */ | |
| 3292 if (lnum < 1 || lnum > curbuf->b_ml.ml_line_count | |
| 3293 || curbuf->b_ml.ml_mfp == NULL) | |
| 3294 return; /* give error message? */ | |
| 3295 | |
| 3296 if (lowest_marked == 0 || lowest_marked > lnum) | |
| 3297 lowest_marked = lnum; | |
| 3298 | |
| 3299 /* | |
| 3300 * find the data block containing the line | |
| 3301 * This also fills the stack with the blocks from the root to the data block | |
| 3302 * This also releases any locked block. | |
| 3303 */ | |
| 3304 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
| 3305 return; /* give error message? */ | |
| 3306 | |
| 3307 dp = (DATA_BL *)(hp->bh_data); | |
| 3308 dp->db_index[lnum - curbuf->b_ml.ml_locked_low] |= DB_MARKED; | |
| 3309 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 3310 } | |
| 3311 | |
| 3312 /* | |
| 3313 * find the first line with its B_MARKED flag set | |
| 3314 */ | |
| 3315 linenr_T | |
|
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parents:
7803
diff
changeset
|
3316 ml_firstmarked(void) |
| 7 | 3317 { |
| 3318 bhdr_T *hp; | |
| 3319 DATA_BL *dp; | |
| 3320 linenr_T lnum; | |
| 3321 int i; | |
| 3322 | |
| 3323 if (curbuf->b_ml.ml_mfp == NULL) | |
| 3324 return (linenr_T) 0; | |
| 3325 | |
| 3326 /* | |
| 3327 * The search starts with lowest_marked line. This is the last line where | |
| 3328 * a mark was found, adjusted by inserting/deleting lines. | |
| 3329 */ | |
| 3330 for (lnum = lowest_marked; lnum <= curbuf->b_ml.ml_line_count; ) | |
| 3331 { | |
| 3332 /* | |
| 3333 * Find the data block containing the line. | |
| 3334 * This also fills the stack with the blocks from the root to the data | |
| 3335 * block This also releases any locked block. | |
| 3336 */ | |
| 3337 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
| 3338 return (linenr_T)0; /* give error message? */ | |
| 3339 | |
| 3340 dp = (DATA_BL *)(hp->bh_data); | |
| 3341 | |
| 3342 for (i = lnum - curbuf->b_ml.ml_locked_low; | |
| 3343 lnum <= curbuf->b_ml.ml_locked_high; ++i, ++lnum) | |
| 3344 if ((dp->db_index[i]) & DB_MARKED) | |
| 3345 { | |
| 3346 (dp->db_index[i]) &= DB_INDEX_MASK; | |
| 3347 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 3348 lowest_marked = lnum + 1; | |
| 3349 return lnum; | |
| 3350 } | |
| 3351 } | |
| 3352 | |
| 3353 return (linenr_T) 0; | |
| 3354 } | |
| 3355 | |
| 3356 /* | |
| 3357 * clear all DB_MARKED flags | |
| 3358 */ | |
| 3359 void | |
|
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7803
diff
changeset
|
3360 ml_clearmarked(void) |
| 7 | 3361 { |
| 3362 bhdr_T *hp; | |
| 3363 DATA_BL *dp; | |
| 3364 linenr_T lnum; | |
| 3365 int i; | |
| 3366 | |
| 3367 if (curbuf->b_ml.ml_mfp == NULL) /* nothing to do */ | |
| 3368 return; | |
| 3369 | |
| 3370 /* | |
| 3371 * The search starts with line lowest_marked. | |
| 3372 */ | |
| 3373 for (lnum = lowest_marked; lnum <= curbuf->b_ml.ml_line_count; ) | |
| 3374 { | |
| 3375 /* | |
| 3376 * Find the data block containing the line. | |
| 3377 * This also fills the stack with the blocks from the root to the data | |
| 3378 * block and releases any locked block. | |
| 3379 */ | |
| 3380 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
| 3381 return; /* give error message? */ | |
| 3382 | |
| 3383 dp = (DATA_BL *)(hp->bh_data); | |
| 3384 | |
| 3385 for (i = lnum - curbuf->b_ml.ml_locked_low; | |
| 3386 lnum <= curbuf->b_ml.ml_locked_high; ++i, ++lnum) | |
| 3387 if ((dp->db_index[i]) & DB_MARKED) | |
| 3388 { | |
| 3389 (dp->db_index[i]) &= DB_INDEX_MASK; | |
| 3390 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 3391 } | |
| 3392 } | |
| 3393 | |
| 3394 lowest_marked = 0; | |
| 3395 return; | |
| 3396 } | |
| 3397 | |
| 3398 /* | |
| 3399 * flush ml_line if necessary | |
| 3400 */ | |
| 3401 static void | |
|
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7803
diff
changeset
|
3402 ml_flush_line(buf_T *buf) |
| 7 | 3403 { |
| 3404 bhdr_T *hp; | |
| 3405 DATA_BL *dp; | |
| 3406 linenr_T lnum; | |
| 3407 char_u *new_line; | |
| 3408 char_u *old_line; | |
| 3409 colnr_T new_len; | |
| 3410 int old_len; | |
| 3411 int extra; | |
| 3412 int idx; | |
| 3413 int start; | |
| 3414 int count; | |
| 3415 int i; | |
|
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diff
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|
3416 static int entered = FALSE; |
| 7 | 3417 |
| 3418 if (buf->b_ml.ml_line_lnum == 0 || buf->b_ml.ml_mfp == NULL) | |
| 3419 return; /* nothing to do */ | |
| 3420 | |
| 3421 if (buf->b_ml.ml_flags & ML_LINE_DIRTY) | |
| 3422 { | |
|
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diff
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|
3423 /* This code doesn't work recursively, but Netbeans may call back here |
|
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diff
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|
3424 * when obtaining the cursor position. */ |
|
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diff
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|
3425 if (entered) |
|
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diff
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|
3426 return; |
|
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diff
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|
3427 entered = TRUE; |
|
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diff
changeset
|
3428 |
| 7 | 3429 lnum = buf->b_ml.ml_line_lnum; |
| 3430 new_line = buf->b_ml.ml_line_ptr; | |
| 3431 | |
| 3432 hp = ml_find_line(buf, lnum, ML_FIND); | |
| 3433 if (hp == NULL) | |
| 3434 EMSGN(_("E320: Cannot find line %ld"), lnum); | |
| 3435 else | |
| 3436 { | |
| 3437 dp = (DATA_BL *)(hp->bh_data); | |
| 3438 idx = lnum - buf->b_ml.ml_locked_low; | |
| 3439 start = ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 3440 old_line = (char_u *)dp + start; | |
| 3441 if (idx == 0) /* line is last in block */ | |
| 3442 old_len = dp->db_txt_end - start; | |
| 3443 else /* text of previous line follows */ | |
| 3444 old_len = (dp->db_index[idx - 1] & DB_INDEX_MASK) - start; | |
| 3445 new_len = (colnr_T)STRLEN(new_line) + 1; | |
| 3446 extra = new_len - old_len; /* negative if lines gets smaller */ | |
| 3447 | |
| 3448 /* | |
| 3449 * if new line fits in data block, replace directly | |
| 3450 */ | |
| 3451 if ((int)dp->db_free >= extra) | |
| 3452 { | |
| 3453 /* if the length changes and there are following lines */ | |
| 3454 count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low + 1; | |
| 3455 if (extra != 0 && idx < count - 1) | |
| 3456 { | |
| 3457 /* move text of following lines */ | |
| 3458 mch_memmove((char *)dp + dp->db_txt_start - extra, | |
| 3459 (char *)dp + dp->db_txt_start, | |
| 3460 (size_t)(start - dp->db_txt_start)); | |
| 3461 | |
| 3462 /* adjust pointers of this and following lines */ | |
| 3463 for (i = idx + 1; i < count; ++i) | |
| 3464 dp->db_index[i] -= extra; | |
| 3465 } | |
| 3466 dp->db_index[idx] -= extra; | |
| 3467 | |
| 3468 /* adjust free space */ | |
| 3469 dp->db_free -= extra; | |
| 3470 dp->db_txt_start -= extra; | |
| 3471 | |
| 3472 /* copy new line into the data block */ | |
| 3473 mch_memmove(old_line - extra, new_line, (size_t)new_len); | |
| 3474 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 3475 #ifdef FEAT_BYTEOFF | |
| 3476 /* The else case is already covered by the insert and delete */ | |
| 3477 ml_updatechunk(buf, lnum, (long)extra, ML_CHNK_UPDLINE); | |
| 3478 #endif | |
| 3479 } | |
| 3480 else | |
| 3481 { | |
| 3482 /* | |
| 3483 * Cannot do it in one data block: Delete and append. | |
| 3484 * Append first, because ml_delete_int() cannot delete the | |
| 3485 * last line in a buffer, which causes trouble for a buffer | |
| 3486 * that has only one line. | |
| 3487 * Don't forget to copy the mark! | |
| 3488 */ | |
| 3489 /* How about handling errors??? */ | |
| 3490 (void)ml_append_int(buf, lnum, new_line, new_len, FALSE, | |
| 3491 (dp->db_index[idx] & DB_MARKED)); | |
| 3492 (void)ml_delete_int(buf, lnum, FALSE); | |
| 3493 } | |
| 3494 } | |
| 3495 vim_free(new_line); | |
|
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|
3496 |
|
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diff
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|
3497 entered = FALSE; |
| 7 | 3498 } |
| 3499 | |
| 3500 buf->b_ml.ml_line_lnum = 0; | |
| 3501 } | |
| 3502 | |
| 3503 /* | |
| 3504 * create a new, empty, data block | |
| 3505 */ | |
| 3506 static bhdr_T * | |
|
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7803
diff
changeset
|
3507 ml_new_data(memfile_T *mfp, int negative, int page_count) |
| 7 | 3508 { |
| 3509 bhdr_T *hp; | |
| 3510 DATA_BL *dp; | |
| 3511 | |
| 3512 if ((hp = mf_new(mfp, negative, page_count)) == NULL) | |
| 3513 return NULL; | |
| 3514 | |
| 3515 dp = (DATA_BL *)(hp->bh_data); | |
| 3516 dp->db_id = DATA_ID; | |
| 3517 dp->db_txt_start = dp->db_txt_end = page_count * mfp->mf_page_size; | |
| 3518 dp->db_free = dp->db_txt_start - HEADER_SIZE; | |
| 3519 dp->db_line_count = 0; | |
| 3520 | |
| 3521 return hp; | |
| 3522 } | |
| 3523 | |
| 3524 /* | |
| 3525 * create a new, empty, pointer block | |
| 3526 */ | |
| 3527 static bhdr_T * | |
|
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parents:
7803
diff
changeset
|
3528 ml_new_ptr(memfile_T *mfp) |
| 7 | 3529 { |
| 3530 bhdr_T *hp; | |
| 3531 PTR_BL *pp; | |
| 3532 | |
| 3533 if ((hp = mf_new(mfp, FALSE, 1)) == NULL) | |
| 3534 return NULL; | |
| 3535 | |
| 3536 pp = (PTR_BL *)(hp->bh_data); | |
| 3537 pp->pb_id = PTR_ID; | |
| 3538 pp->pb_count = 0; | |
|
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diff
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|
3539 pp->pb_count_max = (short_u)((mfp->mf_page_size - sizeof(PTR_BL)) |
|
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diff
changeset
|
3540 / sizeof(PTR_EN) + 1); |
| 7 | 3541 |
| 3542 return hp; | |
| 3543 } | |
| 3544 | |
| 3545 /* | |
| 3546 * lookup line 'lnum' in a memline | |
| 3547 * | |
| 3548 * action: if ML_DELETE or ML_INSERT the line count is updated while searching | |
| 3549 * if ML_FLUSH only flush a locked block | |
| 3550 * if ML_FIND just find the line | |
| 3551 * | |
| 3552 * If the block was found it is locked and put in ml_locked. | |
| 3553 * The stack is updated to lead to the locked block. The ip_high field in | |
| 3554 * the stack is updated to reflect the last line in the block AFTER the | |
| 3555 * insert or delete, also if the pointer block has not been updated yet. But | |
| 1167 | 3556 * if ml_locked != NULL ml_locked_lineadd must be added to ip_high. |
| 7 | 3557 * |
| 3558 * return: NULL for failure, pointer to block header otherwise | |
| 3559 */ | |
| 3560 static bhdr_T * | |
|
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parents:
7803
diff
changeset
|
3561 ml_find_line(buf_T *buf, linenr_T lnum, int action) |
| 7 | 3562 { |
| 3563 DATA_BL *dp; | |
| 3564 PTR_BL *pp; | |
| 3565 infoptr_T *ip; | |
| 3566 bhdr_T *hp; | |
| 3567 memfile_T *mfp; | |
| 3568 linenr_T t; | |
| 3569 blocknr_T bnum, bnum2; | |
| 3570 int dirty; | |
| 3571 linenr_T low, high; | |
| 3572 int top; | |
| 3573 int page_count; | |
| 3574 int idx; | |
| 3575 | |
| 3576 mfp = buf->b_ml.ml_mfp; | |
| 3577 | |
| 3578 /* | |
| 3579 * If there is a locked block check if the wanted line is in it. | |
| 3580 * If not, flush and release the locked block. | |
| 3581 * Don't do this for ML_INSERT_SAME, because the stack need to be updated. | |
| 3582 * Don't do this for ML_FLUSH, because we want to flush the locked block. | |
| 1066 | 3583 * Don't do this when 'swapfile' is reset, we want to load all the blocks. |
| 7 | 3584 */ |
| 3585 if (buf->b_ml.ml_locked) | |
| 3586 { | |
| 1066 | 3587 if (ML_SIMPLE(action) |
| 3588 && buf->b_ml.ml_locked_low <= lnum | |
| 3589 && buf->b_ml.ml_locked_high >= lnum | |
| 3590 && !mf_dont_release) | |
| 7 | 3591 { |
| 1066 | 3592 /* remember to update pointer blocks and stack later */ |
| 7 | 3593 if (action == ML_INSERT) |
| 3594 { | |
| 3595 ++(buf->b_ml.ml_locked_lineadd); | |
| 3596 ++(buf->b_ml.ml_locked_high); | |
| 3597 } | |
| 3598 else if (action == ML_DELETE) | |
| 3599 { | |
| 3600 --(buf->b_ml.ml_locked_lineadd); | |
| 3601 --(buf->b_ml.ml_locked_high); | |
| 3602 } | |
| 3603 return (buf->b_ml.ml_locked); | |
| 3604 } | |
| 3605 | |
| 3606 mf_put(mfp, buf->b_ml.ml_locked, buf->b_ml.ml_flags & ML_LOCKED_DIRTY, | |
| 3607 buf->b_ml.ml_flags & ML_LOCKED_POS); | |
| 3608 buf->b_ml.ml_locked = NULL; | |
| 3609 | |
| 1167 | 3610 /* |
| 3611 * If lines have been added or deleted in the locked block, need to | |
| 3612 * update the line count in pointer blocks. | |
| 3613 */ | |
| 3614 if (buf->b_ml.ml_locked_lineadd != 0) | |
| 7 | 3615 ml_lineadd(buf, buf->b_ml.ml_locked_lineadd); |
| 3616 } | |
| 3617 | |
| 3618 if (action == ML_FLUSH) /* nothing else to do */ | |
| 3619 return NULL; | |
| 3620 | |
| 3621 bnum = 1; /* start at the root of the tree */ | |
| 3622 page_count = 1; | |
| 3623 low = 1; | |
| 3624 high = buf->b_ml.ml_line_count; | |
| 3625 | |
| 3626 if (action == ML_FIND) /* first try stack entries */ | |
| 3627 { | |
| 3628 for (top = buf->b_ml.ml_stack_top - 1; top >= 0; --top) | |
| 3629 { | |
| 3630 ip = &(buf->b_ml.ml_stack[top]); | |
| 3631 if (ip->ip_low <= lnum && ip->ip_high >= lnum) | |
| 3632 { | |
| 3633 bnum = ip->ip_bnum; | |
| 3634 low = ip->ip_low; | |
| 3635 high = ip->ip_high; | |
| 3636 buf->b_ml.ml_stack_top = top; /* truncate stack at prev entry */ | |
| 3637 break; | |
| 3638 } | |
| 3639 } | |
| 3640 if (top < 0) | |
| 3641 buf->b_ml.ml_stack_top = 0; /* not found, start at the root */ | |
| 3642 } | |
| 3643 else /* ML_DELETE or ML_INSERT */ | |
| 3644 buf->b_ml.ml_stack_top = 0; /* start at the root */ | |
| 3645 | |
| 3646 /* | |
| 3647 * search downwards in the tree until a data block is found | |
| 3648 */ | |
| 3649 for (;;) | |
| 3650 { | |
| 3651 if ((hp = mf_get(mfp, bnum, page_count)) == NULL) | |
| 3652 goto error_noblock; | |
| 3653 | |
| 3654 /* | |
| 3655 * update high for insert/delete | |
| 3656 */ | |
| 3657 if (action == ML_INSERT) | |
| 3658 ++high; | |
| 3659 else if (action == ML_DELETE) | |
| 3660 --high; | |
| 3661 | |
| 3662 dp = (DATA_BL *)(hp->bh_data); | |
| 3663 if (dp->db_id == DATA_ID) /* data block */ | |
| 3664 { | |
| 3665 buf->b_ml.ml_locked = hp; | |
| 3666 buf->b_ml.ml_locked_low = low; | |
| 3667 buf->b_ml.ml_locked_high = high; | |
| 3668 buf->b_ml.ml_locked_lineadd = 0; | |
| 3669 buf->b_ml.ml_flags &= ~(ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 3670 return hp; | |
| 3671 } | |
| 3672 | |
| 3673 pp = (PTR_BL *)(dp); /* must be pointer block */ | |
| 3674 if (pp->pb_id != PTR_ID) | |
| 3675 { | |
| 3676 EMSG(_("E317: pointer block id wrong")); | |
| 3677 goto error_block; | |
| 3678 } | |
| 3679 | |
| 3680 if ((top = ml_add_stack(buf)) < 0) /* add new entry to stack */ | |
| 3681 goto error_block; | |
| 3682 ip = &(buf->b_ml.ml_stack[top]); | |
| 3683 ip->ip_bnum = bnum; | |
| 3684 ip->ip_low = low; | |
| 3685 ip->ip_high = high; | |
| 3686 ip->ip_index = -1; /* index not known yet */ | |
| 3687 | |
| 3688 dirty = FALSE; | |
| 3689 for (idx = 0; idx < (int)pp->pb_count; ++idx) | |
| 3690 { | |
| 3691 t = pp->pb_pointer[idx].pe_line_count; | |
| 3692 CHECK(t == 0, _("pe_line_count is zero")); | |
| 3693 if ((low += t) > lnum) | |
| 3694 { | |
| 3695 ip->ip_index = idx; | |
| 3696 bnum = pp->pb_pointer[idx].pe_bnum; | |
| 3697 page_count = pp->pb_pointer[idx].pe_page_count; | |
| 3698 high = low - 1; | |
| 3699 low -= t; | |
| 3700 | |
| 3701 /* | |
| 3702 * a negative block number may have been changed | |
| 3703 */ | |
| 3704 if (bnum < 0) | |
| 3705 { | |
| 3706 bnum2 = mf_trans_del(mfp, bnum); | |
| 3707 if (bnum != bnum2) | |
| 3708 { | |
| 3709 bnum = bnum2; | |
| 3710 pp->pb_pointer[idx].pe_bnum = bnum; | |
| 3711 dirty = TRUE; | |
| 3712 } | |
| 3713 } | |
| 3714 | |
| 3715 break; | |
| 3716 } | |
| 3717 } | |
| 3718 if (idx >= (int)pp->pb_count) /* past the end: something wrong! */ | |
| 3719 { | |
| 3720 if (lnum > buf->b_ml.ml_line_count) | |
| 3721 EMSGN(_("E322: line number out of range: %ld past the end"), | |
| 3722 lnum - buf->b_ml.ml_line_count); | |
| 3723 | |
| 3724 else | |
| 3725 EMSGN(_("E323: line count wrong in block %ld"), bnum); | |
| 3726 goto error_block; | |
| 3727 } | |
| 3728 if (action == ML_DELETE) | |
| 3729 { | |
| 3730 pp->pb_pointer[idx].pe_line_count--; | |
| 3731 dirty = TRUE; | |
| 3732 } | |
| 3733 else if (action == ML_INSERT) | |
| 3734 { | |
| 3735 pp->pb_pointer[idx].pe_line_count++; | |
| 3736 dirty = TRUE; | |
| 3737 } | |
| 3738 mf_put(mfp, hp, dirty, FALSE); | |
| 3739 } | |
| 3740 | |
| 3741 error_block: | |
| 3742 mf_put(mfp, hp, FALSE, FALSE); | |
| 3743 error_noblock: | |
| 2267 | 3744 /* |
| 3745 * If action is ML_DELETE or ML_INSERT we have to correct the tree for | |
| 3746 * the incremented/decremented line counts, because there won't be a line | |
| 3747 * inserted/deleted after all. | |
| 3748 */ | |
| 7 | 3749 if (action == ML_DELETE) |
| 3750 ml_lineadd(buf, 1); | |
| 3751 else if (action == ML_INSERT) | |
| 3752 ml_lineadd(buf, -1); | |
| 3753 buf->b_ml.ml_stack_top = 0; | |
| 3754 return NULL; | |
| 3755 } | |
| 3756 | |
| 3757 /* | |
| 3758 * add an entry to the info pointer stack | |
| 3759 * | |
| 3760 * return -1 for failure, number of the new entry otherwise | |
| 3761 */ | |
| 3762 static int | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3763 ml_add_stack(buf_T *buf) |
| 7 | 3764 { |
| 3765 int top; | |
| 3766 infoptr_T *newstack; | |
| 3767 | |
| 3768 top = buf->b_ml.ml_stack_top; | |
| 3769 | |
| 2267 | 3770 /* may have to increase the stack size */ |
| 7 | 3771 if (top == buf->b_ml.ml_stack_size) |
| 3772 { | |
| 2267 | 3773 CHECK(top > 0, _("Stack size increases")); /* more than 5 levels??? */ |
| 7 | 3774 |
| 3775 newstack = (infoptr_T *)alloc((unsigned)sizeof(infoptr_T) * | |
| 3776 (buf->b_ml.ml_stack_size + STACK_INCR)); | |
| 3777 if (newstack == NULL) | |
| 3778 return -1; | |
| 6989 | 3779 if (top > 0) |
| 3780 mch_memmove(newstack, buf->b_ml.ml_stack, | |
| 1624 | 3781 (size_t)top * sizeof(infoptr_T)); |
| 7 | 3782 vim_free(buf->b_ml.ml_stack); |
| 3783 buf->b_ml.ml_stack = newstack; | |
| 3784 buf->b_ml.ml_stack_size += STACK_INCR; | |
| 3785 } | |
| 3786 | |
| 3787 buf->b_ml.ml_stack_top++; | |
| 3788 return top; | |
| 3789 } | |
| 3790 | |
| 3791 /* | |
| 3792 * Update the pointer blocks on the stack for inserted/deleted lines. | |
| 3793 * The stack itself is also updated. | |
| 3794 * | |
| 3795 * When a insert/delete line action fails, the line is not inserted/deleted, | |
| 3796 * but the pointer blocks have already been updated. That is fixed here by | |
| 3797 * walking through the stack. | |
| 3798 * | |
| 3799 * Count is the number of lines added, negative if lines have been deleted. | |
| 3800 */ | |
| 3801 static void | |
|
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3802 ml_lineadd(buf_T *buf, int count) |
| 7 | 3803 { |
| 3804 int idx; | |
| 3805 infoptr_T *ip; | |
| 3806 PTR_BL *pp; | |
| 3807 memfile_T *mfp = buf->b_ml.ml_mfp; | |
| 3808 bhdr_T *hp; | |
| 3809 | |
| 3810 for (idx = buf->b_ml.ml_stack_top - 1; idx >= 0; --idx) | |
| 3811 { | |
| 3812 ip = &(buf->b_ml.ml_stack[idx]); | |
| 3813 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
| 3814 break; | |
| 3815 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
| 3816 if (pp->pb_id != PTR_ID) | |
| 3817 { | |
| 3818 mf_put(mfp, hp, FALSE, FALSE); | |
| 3819 EMSG(_("E317: pointer block id wrong 2")); | |
| 3820 break; | |
| 3821 } | |
| 3822 pp->pb_pointer[ip->ip_index].pe_line_count += count; | |
| 3823 ip->ip_high += count; | |
| 3824 mf_put(mfp, hp, TRUE, FALSE); | |
| 3825 } | |
| 3826 } | |
| 3827 | |
|
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Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
3828 #if defined(HAVE_READLINK) || defined(PROTO) |
| 594 | 3829 /* |
| 3830 * Resolve a symlink in the last component of a file name. | |
| 3831 * Note that f_resolve() does it for every part of the path, we don't do that | |
| 3832 * here. | |
| 3833 * If it worked returns OK and the resolved link in "buf[MAXPATHL]". | |
| 3834 * Otherwise returns FAIL. | |
| 3835 */ | |
|
2214
f8222d1f9a73
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Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
3836 int |
|
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3837 resolve_symlink(char_u *fname, char_u *buf) |
| 594 | 3838 { |
| 3839 char_u tmp[MAXPATHL]; | |
| 3840 int ret; | |
| 3841 int depth = 0; | |
| 3842 | |
| 3843 if (fname == NULL) | |
| 3844 return FAIL; | |
| 3845 | |
| 3846 /* Put the result so far in tmp[], starting with the original name. */ | |
| 3847 vim_strncpy(tmp, fname, MAXPATHL - 1); | |
| 3848 | |
| 3849 for (;;) | |
| 3850 { | |
| 3851 /* Limit symlink depth to 100, catch recursive loops. */ | |
| 3852 if (++depth == 100) | |
| 3853 { | |
| 3854 EMSG2(_("E773: Symlink loop for \"%s\""), fname); | |
| 3855 return FAIL; | |
| 3856 } | |
| 3857 | |
| 3858 ret = readlink((char *)tmp, (char *)buf, MAXPATHL - 1); | |
| 3859 if (ret <= 0) | |
| 3860 { | |
| 619 | 3861 if (errno == EINVAL || errno == ENOENT) |
| 594 | 3862 { |
| 619 | 3863 /* Found non-symlink or not existing file, stop here. |
| 1855 | 3864 * When at the first level use the unmodified name, skip the |
| 594 | 3865 * call to vim_FullName(). */ |
| 3866 if (depth == 1) | |
| 3867 return FAIL; | |
| 3868 | |
| 3869 /* Use the resolved name in tmp[]. */ | |
| 3870 break; | |
| 3871 } | |
| 3872 | |
| 3873 /* There must be some error reading links, use original name. */ | |
| 3874 return FAIL; | |
| 3875 } | |
| 3876 buf[ret] = NUL; | |
| 3877 | |
| 3878 /* | |
| 3879 * Check whether the symlink is relative or absolute. | |
| 3880 * If it's relative, build a new path based on the directory | |
| 3881 * portion of the filename (if any) and the path the symlink | |
| 3882 * points to. | |
| 3883 */ | |
| 3884 if (mch_isFullName(buf)) | |
| 3885 STRCPY(tmp, buf); | |
| 3886 else | |
| 3887 { | |
| 3888 char_u *tail; | |
| 3889 | |
| 3890 tail = gettail(tmp); | |
| 3891 if (STRLEN(tail) + STRLEN(buf) >= MAXPATHL) | |
| 3892 return FAIL; | |
| 3893 STRCPY(tail, buf); | |
| 3894 } | |
| 3895 } | |
| 3896 | |
| 3897 /* | |
| 3898 * Try to resolve the full name of the file so that the swapfile name will | |
| 3899 * be consistent even when opening a relative symlink from different | |
| 3900 * working directories. | |
| 3901 */ | |
| 3902 return vim_FullName(tmp, buf, MAXPATHL, TRUE); | |
| 3903 } | |
| 3904 #endif | |
| 3905 | |
| 7 | 3906 /* |
| 460 | 3907 * Make swap file name out of the file name and a directory name. |
| 3908 * Returns pointer to allocated memory or NULL. | |
| 7 | 3909 */ |
| 460 | 3910 char_u * |
|
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parents:
7803
diff
changeset
|
3911 makeswapname( |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3912 char_u *fname, |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
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parents:
7803
diff
changeset
|
3913 char_u *ffname UNUSED, |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
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parents:
7803
diff
changeset
|
3914 buf_T *buf, |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
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parents:
7803
diff
changeset
|
3915 char_u *dir_name) |
| 7 | 3916 { |
| 3917 char_u *r, *s; | |
|
2145
de0e7ca61893
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parents:
2108
diff
changeset
|
3918 char_u *fname_res = fname; |
| 594 | 3919 #ifdef HAVE_READLINK |
| 3920 char_u fname_buf[MAXPATHL]; | |
| 3921 #endif | |
| 7 | 3922 |
| 3923 #if defined(UNIX) || defined(WIN3264) /* Need _very_ long file names */ | |
| 3924 s = dir_name + STRLEN(dir_name); | |
| 39 | 3925 if (after_pathsep(dir_name, s) && s[-1] == s[-2]) |
| 7 | 3926 { /* Ends with '//', Use Full path */ |
| 3927 r = NULL; | |
| 460 | 3928 if ((s = make_percent_swname(dir_name, fname)) != NULL) |
| 7 | 3929 { |
| 3930 r = modname(s, (char_u *)".swp", FALSE); | |
| 3931 vim_free(s); | |
| 3932 } | |
| 3933 return r; | |
| 3934 } | |
| 3935 #endif | |
| 3936 | |
| 594 | 3937 #ifdef HAVE_READLINK |
| 3938 /* Expand symlink in the file name, so that we put the swap file with the | |
| 3939 * actual file instead of with the symlink. */ | |
| 3940 if (resolve_symlink(fname, fname_buf) == OK) | |
| 3941 fname_res = fname_buf; | |
| 3942 #endif | |
| 3943 | |
| 7 | 3944 r = buf_modname( |
| 3945 (buf->b_p_sn || buf->b_shortname), | |
| 594 | 3946 fname_res, |
| 7 | 3947 (char_u *) |
| 2823 | 3948 #if defined(VMS) |
| 7 | 3949 "_swp", |
| 3950 #else | |
| 3951 ".swp", | |
| 3952 #endif | |
| 3953 /* Prepend a '.' to the swap file name for the current directory. */ | |
|
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commit https://github.com/vim/vim/commit/48e330aff911be1c798c88a973af6437a8141fce
Christian Brabandt <cb@256bit.org>
parents:
7961
diff
changeset
|
3954 dir_name[0] == '.' && dir_name[1] == NUL); |
| 7 | 3955 if (r == NULL) /* out of memory */ |
| 3956 return NULL; | |
| 3957 | |
| 3958 s = get_file_in_dir(r, dir_name); | |
| 3959 vim_free(r); | |
| 3960 return s; | |
| 3961 } | |
| 3962 | |
| 3963 /* | |
| 3964 * Get file name to use for swap file or backup file. | |
| 3965 * Use the name of the edited file "fname" and an entry in the 'dir' or 'bdir' | |
| 3966 * option "dname". | |
| 3967 * - If "dname" is ".", return "fname" (swap file in dir of file). | |
| 3968 * - If "dname" starts with "./", insert "dname" in "fname" (swap file | |
| 3969 * relative to dir of file). | |
| 3970 * - Otherwise, prepend "dname" to the tail of "fname" (swap file in specific | |
| 3971 * dir). | |
| 3972 * | |
| 3973 * The return value is an allocated string and can be NULL. | |
| 3974 */ | |
| 3975 char_u * | |
|
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parents:
7803
diff
changeset
|
3976 get_file_in_dir( |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
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parents:
7803
diff
changeset
|
3977 char_u *fname, |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3978 char_u *dname) /* don't use "dirname", it is a global for Alpha */ |
| 7 | 3979 { |
| 3980 char_u *t; | |
| 3981 char_u *tail; | |
| 3982 char_u *retval; | |
| 3983 int save_char; | |
| 3984 | |
| 3985 tail = gettail(fname); | |
| 3986 | |
| 3987 if (dname[0] == '.' && dname[1] == NUL) | |
| 3988 retval = vim_strsave(fname); | |
| 3989 else if (dname[0] == '.' && vim_ispathsep(dname[1])) | |
| 3990 { | |
| 3991 if (tail == fname) /* no path before file name */ | |
| 3992 retval = concat_fnames(dname + 2, tail, TRUE); | |
| 3993 else | |
| 3994 { | |
| 3995 save_char = *tail; | |
| 3996 *tail = NUL; | |
| 3997 t = concat_fnames(fname, dname + 2, TRUE); | |
| 3998 *tail = save_char; | |
| 3999 if (t == NULL) /* out of memory */ | |
| 4000 retval = NULL; | |
| 4001 else | |
| 4002 { | |
| 4003 retval = concat_fnames(t, tail, TRUE); | |
| 4004 vim_free(t); | |
| 4005 } | |
| 4006 } | |
| 4007 } | |
| 4008 else | |
| 4009 retval = concat_fnames(dname, tail, TRUE); | |
| 4010 | |
| 5432 | 4011 #ifdef WIN3264 |
| 4012 if (retval != NULL) | |
| 4013 for (t = gettail(retval); *t != NUL; mb_ptr_adv(t)) | |
| 4014 if (*t == ':') | |
| 4015 *t = '%'; | |
| 4016 #endif | |
| 4017 | |
| 7 | 4018 return retval; |
| 4019 } | |
| 4020 | |
|
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commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
Christian Brabandt <cb@256bit.org>
parents:
7410
diff
changeset
|
4021 static void attention_message(buf_T *buf, char_u *fname); |
| 580 | 4022 |
| 4023 /* | |
| 4024 * Print the ATTENTION message: info about an existing swap file. | |
| 4025 */ | |
| 4026 static void | |
|
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parents:
7803
diff
changeset
|
4027 attention_message( |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4028 buf_T *buf, /* buffer being edited */ |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4029 char_u *fname) /* swap file name */ |
| 580 | 4030 { |
| 4031 struct stat st; | |
| 4032 time_t x, sx; | |
| 1001 | 4033 char *p; |
| 580 | 4034 |
| 4035 ++no_wait_return; | |
| 4036 (void)EMSG(_("E325: ATTENTION")); | |
| 4037 MSG_PUTS(_("\nFound a swap file by the name \"")); | |
| 4038 msg_home_replace(fname); | |
| 4039 MSG_PUTS("\"\n"); | |
| 4040 sx = swapfile_info(fname); | |
| 4041 MSG_PUTS(_("While opening file \"")); | |
| 4042 msg_outtrans(buf->b_fname); | |
| 4043 MSG_PUTS("\"\n"); | |
| 4044 if (mch_stat((char *)buf->b_fname, &st) != -1) | |
| 4045 { | |
| 4046 MSG_PUTS(_(" dated: ")); | |
| 4047 x = st.st_mtime; /* Manx C can't do &st.st_mtime */ | |
| 1001 | 4048 p = ctime(&x); /* includes '\n' */ |
| 4049 if (p == NULL) | |
| 4050 MSG_PUTS("(invalid)\n"); | |
| 4051 else | |
| 4052 MSG_PUTS(p); | |
| 580 | 4053 if (sx != 0 && x > sx) |
| 4054 MSG_PUTS(_(" NEWER than swap file!\n")); | |
| 4055 } | |
| 4056 /* Some of these messages are long to allow translation to | |
| 4057 * other languages. */ | |
|
7881
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Christian Brabandt <cb@256bit.org>
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7827
diff
changeset
|
4058 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 | 4059 MSG_PUTS(_("(2) An edit session for this file crashed.\n")); |
| 580 | 4060 MSG_PUTS(_(" If this is the case, use \":recover\" or \"vim -r ")); |
| 4061 msg_outtrans(buf->b_fname); | |
| 4062 MSG_PUTS(_("\"\n to recover the changes (see \":help recovery\").\n")); | |
| 4063 MSG_PUTS(_(" If you did this already, delete the swap file \"")); | |
| 4064 msg_outtrans(fname); | |
| 4065 MSG_PUTS(_("\"\n to avoid this message.\n")); | |
| 4066 cmdline_row = msg_row; | |
| 4067 --no_wait_return; | |
| 4068 } | |
| 4069 | |
| 4070 #ifdef FEAT_AUTOCMD | |
|
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Christian Brabandt <cb@256bit.org>
parents:
7410
diff
changeset
|
4071 static int do_swapexists(buf_T *buf, char_u *fname); |
| 580 | 4072 |
| 4073 /* | |
| 4074 * Trigger the SwapExists autocommands. | |
| 4075 * Returns a value for equivalent to do_dialog() (see below): | |
| 4076 * 0: still need to ask for a choice | |
| 4077 * 1: open read-only | |
| 4078 * 2: edit anyway | |
| 4079 * 3: recover | |
| 4080 * 4: delete it | |
| 4081 * 5: quit | |
| 4082 * 6: abort | |
| 4083 */ | |
| 4084 static int | |
|
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4085 do_swapexists(buf_T *buf, char_u *fname) |
| 580 | 4086 { |
| 4087 set_vim_var_string(VV_SWAPNAME, fname, -1); | |
| 4088 set_vim_var_string(VV_SWAPCHOICE, NULL, -1); | |
| 4089 | |
| 4090 /* Trigger SwapExists autocommands with <afile> set to the file being | |
| 1856 | 4091 * edited. Disallow changing directory here. */ |
| 4092 ++allbuf_lock; | |
| 580 | 4093 apply_autocmds(EVENT_SWAPEXISTS, buf->b_fname, NULL, FALSE, NULL); |
| 1856 | 4094 --allbuf_lock; |
| 580 | 4095 |
| 4096 set_vim_var_string(VV_SWAPNAME, NULL, -1); | |
| 4097 | |
| 4098 switch (*get_vim_var_str(VV_SWAPCHOICE)) | |
| 4099 { | |
| 4100 case 'o': return 1; | |
| 4101 case 'e': return 2; | |
| 4102 case 'r': return 3; | |
| 4103 case 'd': return 4; | |
| 4104 case 'q': return 5; | |
| 4105 case 'a': return 6; | |
| 4106 } | |
| 4107 | |
| 4108 return 0; | |
| 4109 } | |
| 4110 #endif | |
| 4111 | |
| 7 | 4112 /* |
| 4113 * Find out what name to use for the swap file for buffer 'buf'. | |
| 4114 * | |
| 4115 * Several names are tried to find one that does not exist | |
| 460 | 4116 * Returns the name in allocated memory or NULL. |
| 3158 | 4117 * When out of memory "dirp" is set to NULL. |
| 7 | 4118 * |
| 4119 * Note: If BASENAMELEN is not correct, you will get error messages for | |
|
2214
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4120 * not being able to open the swap or undo file |
| 1856 | 4121 * Note: May trigger SwapExists autocmd, pointers may change! |
| 7 | 4122 */ |
| 4123 static char_u * | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4124 findswapname( |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4125 buf_T *buf, |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4126 char_u **dirp, /* pointer to list of directories */ |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4127 char_u *old_fname) /* don't give warning for this file name */ |
| 7 | 4128 { |
| 4129 char_u *fname; | |
| 4130 int n; | |
| 4131 char_u *dir_name; | |
| 4132 #ifdef AMIGA | |
| 4133 BPTR fh; | |
| 4134 #endif | |
| 4135 int r; | |
| 5432 | 4136 char_u *buf_fname = buf->b_fname; |
| 7 | 4137 |
|
8212
05b88224cea1
commit https://github.com/vim/vim/commit/48e330aff911be1c798c88a973af6437a8141fce
Christian Brabandt <cb@256bit.org>
parents:
7961
diff
changeset
|
4138 #if !defined(UNIX) |
| 7 | 4139 # define CREATE_DUMMY_FILE |
| 4140 FILE *dummyfd = NULL; | |
| 4141 | |
| 5432 | 4142 # ifdef WIN3264 |
| 4143 if (buf_fname != NULL && !mch_isFullName(buf_fname) | |
| 4144 && vim_strchr(gettail(buf_fname), ':')) | |
| 4145 { | |
| 4146 char_u *t; | |
| 4147 | |
| 4148 buf_fname = vim_strsave(buf_fname); | |
| 4149 if (buf_fname == NULL) | |
| 4150 buf_fname = buf->b_fname; | |
| 4151 else | |
| 4152 for (t = gettail(buf_fname); *t != NUL; mb_ptr_adv(t)) | |
| 4153 if (*t == ':') | |
| 4154 *t = '%'; | |
| 4155 } | |
| 4156 # endif | |
| 4157 | |
|
2214
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4158 /* |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4159 * If we start editing a new file, e.g. "test.doc", which resides on an |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4160 * MSDOS compatible filesystem, it is possible that the file |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4161 * "test.doc.swp" which we create will be exactly the same file. To avoid |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4162 * this problem we temporarily create "test.doc". Don't do this when the |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4163 * check below for a 8.3 file name is used. |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4164 */ |
| 5432 | 4165 if (!(buf->b_p_sn || buf->b_shortname) && buf_fname != NULL |
| 4166 && mch_getperm(buf_fname) < 0) | |
| 4167 dummyfd = mch_fopen((char *)buf_fname, "w"); | |
| 7 | 4168 #endif |
| 4169 | |
|
2214
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Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4170 /* |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4171 * Isolate a directory name from *dirp and put it in dir_name. |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4172 * First allocate some memory to put the directory name in. |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4173 */ |
| 7 | 4174 dir_name = alloc((unsigned)STRLEN(*dirp) + 1); |
| 3158 | 4175 if (dir_name == NULL) |
| 4176 *dirp = NULL; | |
| 4177 else | |
| 7 | 4178 (void)copy_option_part(dirp, dir_name, 31000, ","); |
| 4179 | |
|
2214
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4180 /* |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4181 * we try different names until we find one that does not exist yet |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4182 */ |
| 7 | 4183 if (dir_name == NULL) /* out of memory */ |
| 4184 fname = NULL; | |
| 4185 else | |
| 5432 | 4186 fname = makeswapname(buf_fname, buf->b_ffname, buf, dir_name); |
| 7 | 4187 |
| 4188 for (;;) | |
| 4189 { | |
| 4190 if (fname == NULL) /* must be out of memory */ | |
| 4191 break; | |
| 4192 if ((n = (int)STRLEN(fname)) == 0) /* safety check */ | |
| 4193 { | |
| 4194 vim_free(fname); | |
| 4195 fname = NULL; | |
| 4196 break; | |
| 4197 } | |
|
8212
05b88224cea1
commit https://github.com/vim/vim/commit/48e330aff911be1c798c88a973af6437a8141fce
Christian Brabandt <cb@256bit.org>
parents:
7961
diff
changeset
|
4198 #if defined(UNIX) |
| 7 | 4199 /* |
| 4200 * Some systems have a MS-DOS compatible filesystem that use 8.3 character | |
| 4201 * file names. If this is the first try and the swap file name does not fit in | |
| 4202 * 8.3, detect if this is the case, set shortname and try again. | |
| 4203 */ | |
| 4204 if (fname[n - 2] == 'w' && fname[n - 1] == 'p' | |
| 4205 && !(buf->b_p_sn || buf->b_shortname)) | |
| 4206 { | |
| 4207 char_u *tail; | |
| 4208 char_u *fname2; | |
| 4209 struct stat s1, s2; | |
| 4210 int f1, f2; | |
| 4211 int created1 = FALSE, created2 = FALSE; | |
| 4212 int same = FALSE; | |
| 4213 | |
| 4214 /* | |
| 4215 * Check if swapfile name does not fit in 8.3: | |
| 4216 * It either contains two dots, is longer than 8 chars, or starts | |
| 4217 * with a dot. | |
| 4218 */ | |
| 5432 | 4219 tail = gettail(buf_fname); |
| 7 | 4220 if ( vim_strchr(tail, '.') != NULL |
| 4221 || STRLEN(tail) > (size_t)8 | |
| 4222 || *gettail(fname) == '.') | |
| 4223 { | |
| 4224 fname2 = alloc(n + 2); | |
| 4225 if (fname2 != NULL) | |
| 4226 { | |
| 4227 STRCPY(fname2, fname); | |
| 4228 /* if fname == "xx.xx.swp", fname2 = "xx.xx.swx" | |
| 4229 * if fname == ".xx.swp", fname2 = ".xx.swpx" | |
| 4230 * if fname == "123456789.swp", fname2 = "12345678x.swp" | |
| 4231 */ | |
| 4232 if (vim_strchr(tail, '.') != NULL) | |
| 4233 fname2[n - 1] = 'x'; | |
| 4234 else if (*gettail(fname) == '.') | |
| 4235 { | |
| 4236 fname2[n] = 'x'; | |
| 4237 fname2[n + 1] = NUL; | |
| 4238 } | |
| 4239 else | |
| 4240 fname2[n - 5] += 1; | |
| 4241 /* | |
| 4242 * may need to create the files to be able to use mch_stat() | |
| 4243 */ | |
| 4244 f1 = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
| 4245 if (f1 < 0) | |
| 4246 { | |
| 4247 f1 = mch_open_rw((char *)fname, | |
| 4248 O_RDWR|O_CREAT|O_EXCL|O_EXTRA); | |
| 4249 created1 = TRUE; | |
| 4250 } | |
| 4251 if (f1 >= 0) | |
| 4252 { | |
| 4253 f2 = mch_open((char *)fname2, O_RDONLY | O_EXTRA, 0); | |
| 4254 if (f2 < 0) | |
| 4255 { | |
| 4256 f2 = mch_open_rw((char *)fname2, | |
| 4257 O_RDWR|O_CREAT|O_EXCL|O_EXTRA); | |
| 4258 created2 = TRUE; | |
| 4259 } | |
| 4260 if (f2 >= 0) | |
| 4261 { | |
| 4262 /* | |
| 4263 * Both files exist now. If mch_stat() returns the | |
| 4264 * same device and inode they are the same file. | |
| 4265 */ | |
| 4266 if (mch_fstat(f1, &s1) != -1 | |
| 4267 && mch_fstat(f2, &s2) != -1 | |
| 4268 && s1.st_dev == s2.st_dev | |
| 4269 && s1.st_ino == s2.st_ino) | |
| 4270 same = TRUE; | |
| 4271 close(f2); | |
| 4272 if (created2) | |
| 4273 mch_remove(fname2); | |
| 4274 } | |
| 4275 close(f1); | |
| 4276 if (created1) | |
| 4277 mch_remove(fname); | |
| 4278 } | |
| 4279 vim_free(fname2); | |
| 4280 if (same) | |
| 4281 { | |
| 4282 buf->b_shortname = TRUE; | |
| 4283 vim_free(fname); | |
| 5432 | 4284 fname = makeswapname(buf_fname, buf->b_ffname, |
| 460 | 4285 buf, dir_name); |
| 7 | 4286 continue; /* try again with b_shortname set */ |
| 4287 } | |
| 4288 } | |
| 4289 } | |
| 4290 } | |
| 4291 #endif | |
| 4292 /* | |
| 4293 * check if the swapfile already exists | |
| 4294 */ | |
| 4295 if (mch_getperm(fname) < 0) /* it does not exist */ | |
| 4296 { | |
| 4297 #ifdef HAVE_LSTAT | |
| 4298 struct stat sb; | |
| 4299 | |
| 4300 /* | |
| 4301 * Extra security check: When a swap file is a symbolic link, this | |
| 4302 * is most likely a symlink attack. | |
| 4303 */ | |
| 4304 if (mch_lstat((char *)fname, &sb) < 0) | |
| 4305 #else | |
| 4306 # ifdef AMIGA | |
| 4307 fh = Open((UBYTE *)fname, (long)MODE_NEWFILE); | |
| 4308 /* | |
| 4309 * on the Amiga mch_getperm() will return -1 when the file exists | |
| 4310 * but is being used by another program. This happens if you edit | |
| 4311 * a file twice. | |
| 4312 */ | |
| 4313 if (fh != (BPTR)NULL) /* can open file, OK */ | |
| 4314 { | |
| 4315 Close(fh); | |
| 4316 mch_remove(fname); | |
| 4317 break; | |
| 4318 } | |
| 4319 if (IoErr() != ERROR_OBJECT_IN_USE | |
| 4320 && IoErr() != ERROR_OBJECT_EXISTS) | |
| 4321 # endif | |
| 4322 #endif | |
| 4323 break; | |
| 4324 } | |
| 4325 | |
| 4326 /* | |
| 4327 * A file name equal to old_fname is OK to use. | |
| 4328 */ | |
| 4329 if (old_fname != NULL && fnamecmp(fname, old_fname) == 0) | |
| 4330 break; | |
| 4331 | |
| 4332 /* | |
| 4333 * get here when file already exists | |
| 4334 */ | |
| 4335 if (fname[n - 2] == 'w' && fname[n - 1] == 'p') /* first try */ | |
| 4336 { | |
| 4337 /* | |
| 4338 * on MS-DOS compatible filesystems (e.g. messydos) file.doc.swp | |
| 4339 * and file.doc are the same file. To guess if this problem is | |
| 4340 * present try if file.doc.swx exists. If it does, we set | |
| 4341 * buf->b_shortname and try file_doc.swp (dots replaced by | |
| 4342 * underscores for this file), and try again. If it doesn't we | |
| 4343 * assume that "file.doc.swp" already exists. | |
| 4344 */ | |
| 4345 if (!(buf->b_p_sn || buf->b_shortname)) /* not tried yet */ | |
| 4346 { | |
| 4347 fname[n - 1] = 'x'; | |
| 4348 r = mch_getperm(fname); /* try "file.swx" */ | |
| 4349 fname[n - 1] = 'p'; | |
| 4350 if (r >= 0) /* "file.swx" seems to exist */ | |
| 4351 { | |
| 4352 buf->b_shortname = TRUE; | |
| 4353 vim_free(fname); | |
| 5432 | 4354 fname = makeswapname(buf_fname, buf->b_ffname, |
| 460 | 4355 buf, dir_name); |
| 7 | 4356 continue; /* try again with '.' replaced with '_' */ |
| 4357 } | |
| 4358 } | |
| 4359 /* | |
| 4360 * If we get here the ".swp" file really exists. | |
| 4361 * Give an error message, unless recovering, no file name, we are | |
| 4362 * viewing a help file or when the path of the file is different | |
| 4363 * (happens when all .swp files are in one directory). | |
| 4364 */ | |
| 5432 | 4365 if (!recoverymode && buf_fname != NULL |
| 43 | 4366 && !buf->b_help && !(buf->b_flags & BF_DUMMY)) |
| 7 | 4367 { |
| 4368 int fd; | |
| 4369 struct block0 b0; | |
| 4370 int differ = FALSE; | |
| 4371 | |
| 4372 /* | |
| 4373 * Try to read block 0 from the swap file to get the original | |
| 4374 * file name (and inode number). | |
| 4375 */ | |
| 4376 fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
| 4377 if (fd >= 0) | |
| 4378 { | |
| 2664 | 4379 if (read_eintr(fd, &b0, sizeof(b0)) == sizeof(b0)) |
| 7 | 4380 { |
| 4381 /* | |
| 39 | 4382 * If the swapfile has the same directory as the |
| 4383 * buffer don't compare the directory names, they can | |
| 4384 * have a different mountpoint. | |
| 7 | 4385 */ |
| 39 | 4386 if (b0.b0_flags & B0_SAME_DIR) |
| 4387 { | |
| 4388 if (fnamecmp(gettail(buf->b_ffname), | |
| 4389 gettail(b0.b0_fname)) != 0 | |
| 4390 || !same_directory(fname, buf->b_ffname)) | |
| 594 | 4391 { |
| 4392 #ifdef CHECK_INODE | |
| 4393 /* Symlinks may point to the same file even | |
| 4394 * when the name differs, need to check the | |
| 4395 * inode too. */ | |
| 4396 expand_env(b0.b0_fname, NameBuff, MAXPATHL); | |
| 4397 if (fnamecmp_ino(buf->b_ffname, NameBuff, | |
| 4398 char_to_long(b0.b0_ino))) | |
| 4399 #endif | |
| 4400 differ = TRUE; | |
| 4401 } | |
| 39 | 4402 } |
| 4403 else | |
| 4404 { | |
| 4405 /* | |
| 4406 * The name in the swap file may be | |
| 4407 * "~user/path/file". Expand it first. | |
| 4408 */ | |
| 4409 expand_env(b0.b0_fname, NameBuff, MAXPATHL); | |
| 7 | 4410 #ifdef CHECK_INODE |
| 39 | 4411 if (fnamecmp_ino(buf->b_ffname, NameBuff, |
| 594 | 4412 char_to_long(b0.b0_ino))) |
| 39 | 4413 differ = TRUE; |
| 7 | 4414 #else |
| 39 | 4415 if (fnamecmp(NameBuff, buf->b_ffname) != 0) |
| 4416 differ = TRUE; | |
| 7 | 4417 #endif |
| 39 | 4418 } |
| 7 | 4419 } |
| 4420 close(fd); | |
| 4421 } | |
| 4422 | |
| 4423 /* give the ATTENTION message when there is an old swap file | |
| 4424 * for the current file, and the buffer was not recovered. */ | |
| 4425 if (differ == FALSE && !(curbuf->b_flags & BF_RECOVERED) | |
| 4426 && vim_strchr(p_shm, SHM_ATTENTION) == NULL) | |
| 4427 { | |
| 580 | 4428 #if defined(HAS_SWAP_EXISTS_ACTION) |
| 4429 int choice = 0; | |
| 4430 #endif | |
| 7 | 4431 #ifdef CREATE_DUMMY_FILE |
| 4432 int did_use_dummy = FALSE; | |
| 4433 | |
| 4434 /* Avoid getting a warning for the file being created | |
| 4435 * outside of Vim, it was created at the start of this | |
| 4436 * function. Delete the file now, because Vim might exit | |
| 4437 * here if the window is closed. */ | |
| 4438 if (dummyfd != NULL) | |
| 4439 { | |
| 4440 fclose(dummyfd); | |
| 4441 dummyfd = NULL; | |
| 5432 | 4442 mch_remove(buf_fname); |
| 7 | 4443 did_use_dummy = TRUE; |
| 4444 } | |
| 4445 #endif | |
| 4446 | |
| 4447 #if (defined(UNIX) || defined(__EMX__) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)) | |
| 4448 process_still_running = FALSE; | |
| 4449 #endif | |
| 580 | 4450 #ifdef FEAT_AUTOCMD |
| 4451 /* | |
| 4452 * If there is an SwapExists autocommand and we can handle | |
| 4453 * the response, trigger it. It may return 0 to ask the | |
| 4454 * user anyway. | |
| 4455 */ | |
| 4456 if (swap_exists_action != SEA_NONE | |
| 5432 | 4457 && has_autocmd(EVENT_SWAPEXISTS, buf_fname, buf)) |
| 580 | 4458 choice = do_swapexists(buf, fname); |
| 4459 | |
| 4460 if (choice == 0) | |
| 4461 #endif | |
| 7 | 4462 { |
| 580 | 4463 #ifdef FEAT_GUI |
| 4464 /* If we are supposed to start the GUI but it wasn't | |
| 4465 * completely started yet, start it now. This makes | |
| 4466 * the messages displayed in the Vim window when | |
| 4467 * loading a session from the .gvimrc file. */ | |
| 4468 if (gui.starting && !gui.in_use) | |
| 4469 gui_start(); | |
| 4470 #endif | |
| 4471 /* Show info about the existing swap file. */ | |
| 4472 attention_message(buf, fname); | |
| 4473 | |
| 4474 /* We don't want a 'q' typed at the more-prompt | |
| 4475 * interrupt loading a file. */ | |
| 4476 got_int = FALSE; | |
| 7 | 4477 } |
| 4478 | |
| 4479 #if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) | |
| 580 | 4480 if (swap_exists_action != SEA_NONE && choice == 0) |
| 7 | 4481 { |
| 4482 char_u *name; | |
| 4483 | |
| 4484 name = alloc((unsigned)(STRLEN(fname) | |
| 4485 + STRLEN(_("Swap file \"")) | |
| 4486 + STRLEN(_("\" already exists!")) + 5)); | |
| 4487 if (name != NULL) | |
| 4488 { | |
| 4489 STRCPY(name, _("Swap file \"")); | |
| 4490 home_replace(NULL, fname, name + STRLEN(name), | |
| 4491 1000, TRUE); | |
| 4492 STRCAT(name, _("\" already exists!")); | |
| 4493 } | |
| 580 | 4494 choice = do_dialog(VIM_WARNING, |
| 7 | 4495 (char_u *)_("VIM - ATTENTION"), |
| 4496 name == NULL | |
| 4497 ? (char_u *)_("Swap file already exists!") | |
| 4498 : name, | |
| 4499 # if defined(UNIX) || defined(__EMX__) || defined(VMS) | |
| 4500 process_still_running | |
| 4501 ? (char_u *)_("&Open Read-Only\n&Edit anyway\n&Recover\n&Quit\n&Abort") : | |
| 4502 # endif | |
| 2684 | 4503 (char_u *)_("&Open Read-Only\n&Edit anyway\n&Recover\n&Delete it\n&Quit\n&Abort"), 1, NULL, FALSE); |
| 580 | 4504 |
| 4505 # if defined(UNIX) || defined(__EMX__) || defined(VMS) | |
| 4506 if (process_still_running && choice >= 4) | |
| 4507 choice++; /* Skip missing "Delete it" button */ | |
| 4508 # endif | |
| 4509 vim_free(name); | |
| 4510 | |
| 4511 /* pretend screen didn't scroll, need redraw anyway */ | |
| 4512 msg_scrolled = 0; | |
| 4513 redraw_all_later(NOT_VALID); | |
| 4514 } | |
| 4515 #endif | |
| 4516 | |
| 4517 #if defined(HAS_SWAP_EXISTS_ACTION) | |
| 4518 if (choice > 0) | |
| 4519 { | |
| 4520 switch (choice) | |
| 7 | 4521 { |
| 4522 case 1: | |
| 4523 buf->b_p_ro = TRUE; | |
| 4524 break; | |
| 4525 case 2: | |
| 4526 break; | |
| 4527 case 3: | |
| 4528 swap_exists_action = SEA_RECOVER; | |
| 4529 break; | |
| 4530 case 4: | |
| 580 | 4531 mch_remove(fname); |
| 4532 break; | |
| 4533 case 5: | |
| 7 | 4534 swap_exists_action = SEA_QUIT; |
| 4535 break; | |
| 580 | 4536 case 6: |
| 7 | 4537 swap_exists_action = SEA_QUIT; |
| 4538 got_int = TRUE; | |
| 4539 break; | |
| 4540 } | |
| 4541 | |
| 4542 /* If the file was deleted this fname can be used. */ | |
| 4543 if (mch_getperm(fname) < 0) | |
| 4544 break; | |
| 4545 } | |
| 4546 else | |
| 4547 #endif | |
| 4548 { | |
| 4549 MSG_PUTS("\n"); | |
| 625 | 4550 if (msg_silent == 0) |
| 4551 /* call wait_return() later */ | |
| 4552 need_wait_return = TRUE; | |
| 7 | 4553 } |
| 4554 | |
| 4555 #ifdef CREATE_DUMMY_FILE | |
| 4556 /* Going to try another name, need the dummy file again. */ | |
| 4557 if (did_use_dummy) | |
| 5432 | 4558 dummyfd = mch_fopen((char *)buf_fname, "w"); |
| 7 | 4559 #endif |
| 4560 } | |
| 4561 } | |
| 4562 } | |
| 4563 | |
| 4564 /* | |
| 4565 * Change the ".swp" extension to find another file that can be used. | |
| 4566 * First decrement the last char: ".swo", ".swn", etc. | |
| 4567 * If that still isn't enough decrement the last but one char: ".svz" | |
| 9 | 4568 * Can happen when editing many "No Name" buffers. |
| 7 | 4569 */ |
| 4570 if (fname[n - 1] == 'a') /* ".s?a" */ | |
| 4571 { | |
| 4572 if (fname[n - 2] == 'a') /* ".saa": tried enough, give up */ | |
| 4573 { | |
| 4574 EMSG(_("E326: Too many swap files found")); | |
| 4575 vim_free(fname); | |
| 4576 fname = NULL; | |
| 4577 break; | |
| 4578 } | |
| 4579 --fname[n - 2]; /* ".svz", ".suz", etc. */ | |
| 4580 fname[n - 1] = 'z' + 1; | |
| 4581 } | |
| 4582 --fname[n - 1]; /* ".swo", ".swn", etc. */ | |
| 4583 } | |
| 4584 | |
| 4585 vim_free(dir_name); | |
| 4586 #ifdef CREATE_DUMMY_FILE | |
| 4587 if (dummyfd != NULL) /* file has been created temporarily */ | |
| 4588 { | |
| 4589 fclose(dummyfd); | |
| 5432 | 4590 mch_remove(buf_fname); |
| 7 | 4591 } |
| 4592 #endif | |
| 5432 | 4593 #ifdef WIN3264 |
| 4594 if (buf_fname != buf->b_fname) | |
| 4595 vim_free(buf_fname); | |
| 4596 #endif | |
| 7 | 4597 return fname; |
| 4598 } | |
| 4599 | |
| 4600 static int | |
|
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4601 b0_magic_wrong(ZERO_BL *b0p) |
| 7 | 4602 { |
| 4603 return (b0p->b0_magic_long != (long)B0_MAGIC_LONG | |
| 4604 || b0p->b0_magic_int != (int)B0_MAGIC_INT | |
| 4605 || b0p->b0_magic_short != (short)B0_MAGIC_SHORT | |
| 4606 || b0p->b0_magic_char != B0_MAGIC_CHAR); | |
| 4607 } | |
| 4608 | |
| 4609 #ifdef CHECK_INODE | |
| 4610 /* | |
| 4611 * Compare current file name with file name from swap file. | |
| 4612 * Try to use inode numbers when possible. | |
| 4613 * Return non-zero when files are different. | |
| 4614 * | |
| 4615 * When comparing file names a few things have to be taken into consideration: | |
| 4616 * - When working over a network the full path of a file depends on the host. | |
| 4617 * We check the inode number if possible. It is not 100% reliable though, | |
| 4618 * because the device number cannot be used over a network. | |
| 4619 * - When a file does not exist yet (editing a new file) there is no inode | |
| 4620 * number. | |
| 4621 * - The file name in a swap file may not be valid on the current host. The | |
| 4622 * "~user" form is used whenever possible to avoid this. | |
| 4623 * | |
| 4624 * This is getting complicated, let's make a table: | |
| 4625 * | |
| 4626 * ino_c ino_s fname_c fname_s differ = | |
| 4627 * | |
| 4628 * both files exist -> compare inode numbers: | |
| 4629 * != 0 != 0 X X ino_c != ino_s | |
| 4630 * | |
| 4631 * inode number(s) unknown, file names available -> compare file names | |
| 4632 * == 0 X OK OK fname_c != fname_s | |
| 4633 * X == 0 OK OK fname_c != fname_s | |
| 4634 * | |
| 4635 * current file doesn't exist, file for swap file exist, file name(s) not | |
| 4636 * available -> probably different | |
| 4637 * == 0 != 0 FAIL X TRUE | |
| 4638 * == 0 != 0 X FAIL TRUE | |
| 4639 * | |
| 4640 * current file exists, inode for swap unknown, file name(s) not | |
| 4641 * available -> probably different | |
| 4642 * != 0 == 0 FAIL X TRUE | |
| 4643 * != 0 == 0 X FAIL TRUE | |
| 4644 * | |
| 4645 * current file doesn't exist, inode for swap unknown, one file name not | |
| 4646 * available -> probably different | |
| 4647 * == 0 == 0 FAIL OK TRUE | |
| 4648 * == 0 == 0 OK FAIL TRUE | |
| 4649 * | |
| 4650 * current file doesn't exist, inode for swap unknown, both file names not | |
| 4651 * available -> probably same file | |
| 4652 * == 0 == 0 FAIL FAIL FALSE | |
| 4653 * | |
| 4654 * Note that when the ino_t is 64 bits, only the last 32 will be used. This | |
| 4655 * can't be changed without making the block 0 incompatible with 32 bit | |
| 4656 * versions. | |
| 4657 */ | |
| 4658 | |
| 4659 static int | |
|
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4660 fnamecmp_ino( |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4661 char_u *fname_c, /* current file name */ |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4662 char_u *fname_s, /* file name from swap file */ |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4663 long ino_block0) |
| 7 | 4664 { |
| 4665 struct stat st; | |
| 4666 ino_t ino_c = 0; /* ino of current file */ | |
| 4667 ino_t ino_s; /* ino of file from swap file */ | |
| 4668 char_u buf_c[MAXPATHL]; /* full path of fname_c */ | |
| 4669 char_u buf_s[MAXPATHL]; /* full path of fname_s */ | |
| 4670 int retval_c; /* flag: buf_c valid */ | |
| 4671 int retval_s; /* flag: buf_s valid */ | |
| 4672 | |
| 4673 if (mch_stat((char *)fname_c, &st) == 0) | |
| 4674 ino_c = (ino_t)st.st_ino; | |
| 4675 | |
| 4676 /* | |
| 4677 * First we try to get the inode from the file name, because the inode in | |
| 4678 * the swap file may be outdated. If that fails (e.g. this path is not | |
| 4679 * valid on this machine), use the inode from block 0. | |
| 4680 */ | |
| 4681 if (mch_stat((char *)fname_s, &st) == 0) | |
| 4682 ino_s = (ino_t)st.st_ino; | |
| 4683 else | |
| 4684 ino_s = (ino_t)ino_block0; | |
| 4685 | |
| 4686 if (ino_c && ino_s) | |
| 4687 return (ino_c != ino_s); | |
| 4688 | |
| 4689 /* | |
| 4690 * One of the inode numbers is unknown, try a forced vim_FullName() and | |
| 4691 * compare the file names. | |
| 4692 */ | |
| 4693 retval_c = vim_FullName(fname_c, buf_c, MAXPATHL, TRUE); | |
| 4694 retval_s = vim_FullName(fname_s, buf_s, MAXPATHL, TRUE); | |
| 4695 if (retval_c == OK && retval_s == OK) | |
| 4696 return (STRCMP(buf_c, buf_s) != 0); | |
| 4697 | |
| 4698 /* | |
| 4699 * Can't compare inodes or file names, guess that the files are different, | |
| 4700 * unless both appear not to exist at all. | |
| 4701 */ | |
| 4702 if (ino_s == 0 && ino_c == 0 && retval_c == FAIL && retval_s == FAIL) | |
| 4703 return FALSE; | |
| 4704 return TRUE; | |
| 4705 } | |
| 4706 #endif /* CHECK_INODE */ | |
| 4707 | |
| 4708 /* | |
| 4709 * Move a long integer into a four byte character array. | |
| 4710 * Used for machine independency in block zero. | |
| 4711 */ | |
| 4712 static void | |
|
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4713 long_to_char(long n, char_u *s) |
| 7 | 4714 { |
| 4715 s[0] = (char_u)(n & 0xff); | |
| 4716 n = (unsigned)n >> 8; | |
| 4717 s[1] = (char_u)(n & 0xff); | |
| 4718 n = (unsigned)n >> 8; | |
| 4719 s[2] = (char_u)(n & 0xff); | |
| 4720 n = (unsigned)n >> 8; | |
| 4721 s[3] = (char_u)(n & 0xff); | |
| 4722 } | |
| 4723 | |
| 4724 static long | |
|
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4725 char_to_long(char_u *s) |
| 7 | 4726 { |
| 4727 long retval; | |
| 4728 | |
| 4729 retval = s[3]; | |
| 4730 retval <<= 8; | |
| 4731 retval |= s[2]; | |
| 4732 retval <<= 8; | |
| 4733 retval |= s[1]; | |
| 4734 retval <<= 8; | |
| 4735 retval |= s[0]; | |
| 4736 | |
| 4737 return retval; | |
| 4738 } | |
| 4739 | |
| 39 | 4740 /* |
| 4741 * Set the flags in the first block of the swap file: | |
| 4742 * - file is modified or not: buf->b_changed | |
| 4743 * - 'fileformat' | |
| 4744 * - 'fileencoding' | |
| 4745 */ | |
| 7 | 4746 void |
|
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parents:
7803
diff
changeset
|
4747 ml_setflags(buf_T *buf) |
| 7 | 4748 { |
| 4749 bhdr_T *hp; | |
| 4750 ZERO_BL *b0p; | |
| 4751 | |
| 4752 if (!buf->b_ml.ml_mfp) | |
| 4753 return; | |
| 4754 for (hp = buf->b_ml.ml_mfp->mf_used_last; hp != NULL; hp = hp->bh_prev) | |
| 4755 { | |
| 4756 if (hp->bh_bnum == 0) | |
| 4757 { | |
| 4758 b0p = (ZERO_BL *)(hp->bh_data); | |
| 39 | 4759 b0p->b0_dirty = buf->b_changed ? B0_DIRTY : 0; |
| 4760 b0p->b0_flags = (b0p->b0_flags & ~B0_FF_MASK) | |
| 4761 | (get_fileformat(buf) + 1); | |
| 4762 #ifdef FEAT_MBYTE | |
| 4763 add_b0_fenc(b0p, buf); | |
| 4764 #endif | |
| 7 | 4765 hp->bh_flags |= BH_DIRTY; |
| 4766 mf_sync(buf->b_ml.ml_mfp, MFS_ZERO); | |
| 4767 break; | |
| 4768 } | |
| 4769 } | |
| 4770 } | |
| 4771 | |
| 2267 | 4772 #if defined(FEAT_CRYPT) || defined(PROTO) |
| 4773 /* | |
| 4774 * If "data" points to a data block encrypt the text in it and return a copy | |
| 4775 * in allocated memory. Return NULL when out of memory. | |
| 4776 * Otherwise return "data". | |
| 4777 */ | |
| 4778 char_u * | |
|
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4779 ml_encrypt_data( |
|
41789f16d6b2
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4780 memfile_T *mfp, |
|
41789f16d6b2
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4781 char_u *data, |
|
41789f16d6b2
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4782 off_t offset, |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4783 unsigned size) |
| 2267 | 4784 { |
| 4785 DATA_BL *dp = (DATA_BL *)data; | |
| 4786 char_u *head_end; | |
| 4787 char_u *text_start; | |
| 4788 char_u *new_data; | |
| 4789 int text_len; | |
| 6122 | 4790 cryptstate_T *state; |
| 2267 | 4791 |
| 4792 if (dp->db_id != DATA_ID) | |
| 4793 return data; | |
| 4794 | |
| 6817 | 4795 state = ml_crypt_prepare(mfp, offset, FALSE); |
| 4796 if (state == NULL) | |
| 4797 return data; | |
| 4798 | |
| 2267 | 4799 new_data = (char_u *)alloc(size); |
| 4800 if (new_data == NULL) | |
| 4801 return NULL; | |
| 4802 head_end = (char_u *)(&dp->db_index[dp->db_line_count]); | |
| 4803 text_start = (char_u *)dp + dp->db_txt_start; | |
| 4804 text_len = size - dp->db_txt_start; | |
| 4805 | |
| 4806 /* Copy the header and the text. */ | |
| 4807 mch_memmove(new_data, dp, head_end - (char_u *)dp); | |
| 4808 | |
| 4809 /* Encrypt the text. */ | |
| 6122 | 4810 crypt_encode(state, text_start, text_len, new_data + dp->db_txt_start); |
| 4811 crypt_free_state(state); | |
| 2267 | 4812 |
| 4813 /* Clear the gap. */ | |
| 4814 if (head_end < text_start) | |
| 4815 vim_memset(new_data + (head_end - data), 0, text_start - head_end); | |
| 4816 | |
| 4817 return new_data; | |
| 4818 } | |
| 4819 | |
| 4820 /* | |
| 6817 | 4821 * Decrypt the text in "data" if it points to an encrypted data block. |
| 2267 | 4822 */ |
| 4823 void | |
|
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4824 ml_decrypt_data( |
|
41789f16d6b2
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4825 memfile_T *mfp, |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4826 char_u *data, |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4827 off_t offset, |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4828 unsigned size) |
| 2267 | 4829 { |
| 4830 DATA_BL *dp = (DATA_BL *)data; | |
| 4831 char_u *head_end; | |
| 4832 char_u *text_start; | |
| 4833 int text_len; | |
| 6122 | 4834 cryptstate_T *state; |
| 2267 | 4835 |
| 4836 if (dp->db_id == DATA_ID) | |
| 4837 { | |
| 4838 head_end = (char_u *)(&dp->db_index[dp->db_line_count]); | |
| 4839 text_start = (char_u *)dp + dp->db_txt_start; | |
| 4840 text_len = dp->db_txt_end - dp->db_txt_start; | |
| 4841 | |
| 4842 if (head_end > text_start || dp->db_txt_start > size | |
| 4843 || dp->db_txt_end > size) | |
| 4844 return; /* data was messed up */ | |
| 4845 | |
| 6122 | 4846 state = ml_crypt_prepare(mfp, offset, TRUE); |
| 6817 | 4847 if (state != NULL) |
| 4848 { | |
| 4849 /* Decrypt the text in place. */ | |
| 4850 crypt_decode_inplace(state, text_start, text_len); | |
| 4851 crypt_free_state(state); | |
| 4852 } | |
| 2267 | 4853 } |
| 4854 } | |
| 4855 | |
| 4856 /* | |
| 4857 * Prepare for encryption/decryption, using the key, seed and offset. | |
| 6122 | 4858 * Return an allocated cryptstate_T *. |
| 2267 | 4859 */ |
| 6122 | 4860 static cryptstate_T * |
|
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4861 ml_crypt_prepare(memfile_T *mfp, off_t offset, int reading) |
| 2267 | 4862 { |
| 4863 buf_T *buf = mfp->mf_buffer; | |
| 4864 char_u salt[50]; | |
| 6122 | 4865 int method_nr; |
| 2267 | 4866 char_u *key; |
| 4867 char_u *seed; | |
| 4868 | |
| 4869 if (reading && mfp->mf_old_key != NULL) | |
| 4870 { | |
| 4871 /* Reading back blocks with the previous key/method/seed. */ | |
| 6122 | 4872 method_nr = mfp->mf_old_cm; |
| 2267 | 4873 key = mfp->mf_old_key; |
| 4874 seed = mfp->mf_old_seed; | |
| 4875 } | |
| 4876 else | |
| 4877 { | |
| 6122 | 4878 method_nr = crypt_get_method_nr(buf); |
| 2267 | 4879 key = buf->b_p_key; |
| 4880 seed = mfp->mf_seed; | |
| 4881 } | |
| 6817 | 4882 if (*key == NUL) |
| 4883 return NULL; | |
| 2267 | 4884 |
| 6122 | 4885 if (method_nr == CRYPT_M_ZIP) |
| 2267 | 4886 { |
| 6122 | 4887 /* For PKzip: Append the offset to the key, so that we use a different |
| 4888 * key for every block. */ | |
| 2267 | 4889 vim_snprintf((char *)salt, sizeof(salt), "%s%ld", key, (long)offset); |
| 6122 | 4890 return crypt_create(method_nr, salt, NULL, 0, NULL, 0); |
| 2267 | 4891 } |
| 6122 | 4892 |
| 4893 /* Using blowfish or better: add salt and seed. We use the byte offset | |
| 4894 * of the block for the salt. */ | |
| 4895 vim_snprintf((char *)salt, sizeof(salt), "%ld", (long)offset); | |
| 4896 return crypt_create(method_nr, key, salt, (int)STRLEN(salt), | |
| 4897 seed, MF_SEED_LEN); | |
| 2267 | 4898 } |
| 4899 | |
| 4900 #endif | |
| 4901 | |
| 4902 | |
| 7 | 4903 #if defined(FEAT_BYTEOFF) || defined(PROTO) |
| 4904 | |
| 4905 #define MLCS_MAXL 800 /* max no of lines in chunk */ | |
| 4906 #define MLCS_MINL 400 /* should be half of MLCS_MAXL */ | |
| 4907 | |
| 4908 /* | |
|
2407
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Fix memory access to 'cryptmethod' during recovery. (Dominique Pelle)
Bram Moolenaar <bram@vim.org>
parents:
2394
diff
changeset
|
4909 * Keep information for finding byte offset of a line, updtype may be one of: |
| 7 | 4910 * ML_CHNK_ADDLINE: Add len to parent chunk, possibly splitting it |
| 4911 * Careful: ML_CHNK_ADDLINE may cause ml_find_line() to be called. | |
| 4912 * ML_CHNK_DELLINE: Subtract len from parent chunk, possibly deleting it | |
| 4913 * ML_CHNK_UPDLINE: Add len to parent chunk, as a signed entity. | |
| 4914 */ | |
| 4915 static void | |
|
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parents:
7803
diff
changeset
|
4916 ml_updatechunk( |
|
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parents:
7803
diff
changeset
|
4917 buf_T *buf, |
|
41789f16d6b2
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4918 linenr_T line, |
|
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4919 long len, |
|
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4920 int updtype) |
| 7 | 4921 { |
| 4922 static buf_T *ml_upd_lastbuf = NULL; | |
| 4923 static linenr_T ml_upd_lastline; | |
| 4924 static linenr_T ml_upd_lastcurline; | |
| 4925 static int ml_upd_lastcurix; | |
| 4926 | |
| 4927 linenr_T curline = ml_upd_lastcurline; | |
| 4928 int curix = ml_upd_lastcurix; | |
| 4929 long size; | |
| 4930 chunksize_T *curchnk; | |
| 4931 int rest; | |
| 4932 bhdr_T *hp; | |
| 4933 DATA_BL *dp; | |
| 4934 | |
| 4935 if (buf->b_ml.ml_usedchunks == -1 || len == 0) | |
| 4936 return; | |
| 4937 if (buf->b_ml.ml_chunksize == NULL) | |
| 4938 { | |
| 4939 buf->b_ml.ml_chunksize = (chunksize_T *) | |
| 4940 alloc((unsigned)sizeof(chunksize_T) * 100); | |
| 4941 if (buf->b_ml.ml_chunksize == NULL) | |
| 4942 { | |
| 4943 buf->b_ml.ml_usedchunks = -1; | |
| 4944 return; | |
| 4945 } | |
| 4946 buf->b_ml.ml_numchunks = 100; | |
| 4947 buf->b_ml.ml_usedchunks = 1; | |
| 4948 buf->b_ml.ml_chunksize[0].mlcs_numlines = 1; | |
| 4949 buf->b_ml.ml_chunksize[0].mlcs_totalsize = 1; | |
| 4950 } | |
| 4951 | |
| 4952 if (updtype == ML_CHNK_UPDLINE && buf->b_ml.ml_line_count == 1) | |
| 4953 { | |
| 4954 /* | |
| 4955 * First line in empty buffer from ml_flush_line() -- reset | |
| 4956 */ | |
| 4957 buf->b_ml.ml_usedchunks = 1; | |
| 4958 buf->b_ml.ml_chunksize[0].mlcs_numlines = 1; | |
| 4959 buf->b_ml.ml_chunksize[0].mlcs_totalsize = | |
| 4960 (long)STRLEN(buf->b_ml.ml_line_ptr) + 1; | |
| 4961 return; | |
| 4962 } | |
| 4963 | |
| 4964 /* | |
| 4965 * Find chunk that our line belongs to, curline will be at start of the | |
| 4966 * chunk. | |
| 4967 */ | |
| 4968 if (buf != ml_upd_lastbuf || line != ml_upd_lastline + 1 | |
| 4969 || updtype != ML_CHNK_ADDLINE) | |
| 4970 { | |
| 4971 for (curline = 1, curix = 0; | |
| 4972 curix < buf->b_ml.ml_usedchunks - 1 | |
| 4973 && line >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 4974 curix++) | |
| 4975 { | |
| 4976 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 4977 } | |
| 4978 } | |
| 4979 else if (line >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines | |
| 4980 && curix < buf->b_ml.ml_usedchunks - 1) | |
| 4981 { | |
| 4982 /* Adjust cached curix & curline */ | |
| 4983 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 4984 curix++; | |
| 4985 } | |
| 4986 curchnk = buf->b_ml.ml_chunksize + curix; | |
| 4987 | |
| 4988 if (updtype == ML_CHNK_DELLINE) | |
| 1030 | 4989 len = -len; |
| 7 | 4990 curchnk->mlcs_totalsize += len; |
| 4991 if (updtype == ML_CHNK_ADDLINE) | |
| 4992 { | |
| 4993 curchnk->mlcs_numlines++; | |
| 4994 | |
| 4995 /* May resize here so we don't have to do it in both cases below */ | |
| 4996 if (buf->b_ml.ml_usedchunks + 1 >= buf->b_ml.ml_numchunks) | |
| 4997 { | |
| 6596 | 4998 chunksize_T *t_chunksize = buf->b_ml.ml_chunksize; |
| 4999 | |
| 7 | 5000 buf->b_ml.ml_numchunks = buf->b_ml.ml_numchunks * 3 / 2; |
| 5001 buf->b_ml.ml_chunksize = (chunksize_T *) | |
| 5002 vim_realloc(buf->b_ml.ml_chunksize, | |
| 5003 sizeof(chunksize_T) * buf->b_ml.ml_numchunks); | |
| 5004 if (buf->b_ml.ml_chunksize == NULL) | |
| 5005 { | |
| 5006 /* Hmmmm, Give up on offset for this buffer */ | |
| 6596 | 5007 vim_free(t_chunksize); |
| 7 | 5008 buf->b_ml.ml_usedchunks = -1; |
| 5009 return; | |
| 5010 } | |
| 5011 } | |
| 5012 | |
| 5013 if (buf->b_ml.ml_chunksize[curix].mlcs_numlines >= MLCS_MAXL) | |
| 5014 { | |
| 5015 int count; /* number of entries in block */ | |
| 5016 int idx; | |
| 5017 int text_end; | |
| 5018 int linecnt; | |
| 5019 | |
| 5020 mch_memmove(buf->b_ml.ml_chunksize + curix + 1, | |
| 5021 buf->b_ml.ml_chunksize + curix, | |
| 5022 (buf->b_ml.ml_usedchunks - curix) * | |
| 5023 sizeof(chunksize_T)); | |
| 1855 | 5024 /* Compute length of first half of lines in the split chunk */ |
| 7 | 5025 size = 0; |
| 5026 linecnt = 0; | |
| 5027 while (curline < buf->b_ml.ml_line_count | |
| 5028 && linecnt < MLCS_MINL) | |
| 5029 { | |
| 5030 if ((hp = ml_find_line(buf, curline, ML_FIND)) == NULL) | |
| 5031 { | |
| 5032 buf->b_ml.ml_usedchunks = -1; | |
| 5033 return; | |
| 5034 } | |
| 5035 dp = (DATA_BL *)(hp->bh_data); | |
| 5036 count = (long)(buf->b_ml.ml_locked_high) - | |
| 5037 (long)(buf->b_ml.ml_locked_low) + 1; | |
| 5038 idx = curline - buf->b_ml.ml_locked_low; | |
| 5039 curline = buf->b_ml.ml_locked_high + 1; | |
| 5040 if (idx == 0)/* first line in block, text at the end */ | |
| 5041 text_end = dp->db_txt_end; | |
| 5042 else | |
| 5043 text_end = ((dp->db_index[idx - 1]) & DB_INDEX_MASK); | |
| 5044 /* Compute index of last line to use in this MEMLINE */ | |
| 5045 rest = count - idx; | |
| 5046 if (linecnt + rest > MLCS_MINL) | |
| 5047 { | |
| 5048 idx += MLCS_MINL - linecnt - 1; | |
| 5049 linecnt = MLCS_MINL; | |
| 5050 } | |
| 5051 else | |
| 5052 { | |
| 5053 idx = count - 1; | |
| 5054 linecnt += rest; | |
| 5055 } | |
| 5056 size += text_end - ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 5057 } | |
| 5058 buf->b_ml.ml_chunksize[curix].mlcs_numlines = linecnt; | |
| 5059 buf->b_ml.ml_chunksize[curix + 1].mlcs_numlines -= linecnt; | |
| 5060 buf->b_ml.ml_chunksize[curix].mlcs_totalsize = size; | |
| 5061 buf->b_ml.ml_chunksize[curix + 1].mlcs_totalsize -= size; | |
| 5062 buf->b_ml.ml_usedchunks++; | |
| 5063 ml_upd_lastbuf = NULL; /* Force recalc of curix & curline */ | |
| 5064 return; | |
| 5065 } | |
| 5066 else if (buf->b_ml.ml_chunksize[curix].mlcs_numlines >= MLCS_MINL | |
| 5067 && curix == buf->b_ml.ml_usedchunks - 1 | |
| 5068 && buf->b_ml.ml_line_count - line <= 1) | |
| 5069 { | |
| 5070 /* | |
| 5071 * We are in the last chunk and it is cheap to crate a new one | |
| 5072 * after this. Do it now to avoid the loop above later on | |
| 5073 */ | |
| 5074 curchnk = buf->b_ml.ml_chunksize + curix + 1; | |
| 5075 buf->b_ml.ml_usedchunks++; | |
| 5076 if (line == buf->b_ml.ml_line_count) | |
| 5077 { | |
| 5078 curchnk->mlcs_numlines = 0; | |
| 5079 curchnk->mlcs_totalsize = 0; | |
| 5080 } | |
| 5081 else | |
| 5082 { | |
| 5083 /* | |
| 5084 * Line is just prior to last, move count for last | |
| 5085 * This is the common case when loading a new file | |
| 5086 */ | |
| 5087 hp = ml_find_line(buf, buf->b_ml.ml_line_count, ML_FIND); | |
| 5088 if (hp == NULL) | |
| 5089 { | |
| 5090 buf->b_ml.ml_usedchunks = -1; | |
| 5091 return; | |
| 5092 } | |
| 5093 dp = (DATA_BL *)(hp->bh_data); | |
| 5094 if (dp->db_line_count == 1) | |
| 5095 rest = dp->db_txt_end - dp->db_txt_start; | |
| 5096 else | |
| 5097 rest = | |
| 5098 ((dp->db_index[dp->db_line_count - 2]) & DB_INDEX_MASK) | |
| 5099 - dp->db_txt_start; | |
| 5100 curchnk->mlcs_totalsize = rest; | |
| 5101 curchnk->mlcs_numlines = 1; | |
| 5102 curchnk[-1].mlcs_totalsize -= rest; | |
| 5103 curchnk[-1].mlcs_numlines -= 1; | |
| 5104 } | |
| 5105 } | |
| 5106 } | |
| 5107 else if (updtype == ML_CHNK_DELLINE) | |
| 5108 { | |
| 5109 curchnk->mlcs_numlines--; | |
| 5110 ml_upd_lastbuf = NULL; /* Force recalc of curix & curline */ | |
| 5111 if (curix < (buf->b_ml.ml_usedchunks - 1) | |
| 5112 && (curchnk->mlcs_numlines + curchnk[1].mlcs_numlines) | |
| 5113 <= MLCS_MINL) | |
| 5114 { | |
| 5115 curix++; | |
| 5116 curchnk = buf->b_ml.ml_chunksize + curix; | |
| 5117 } | |
| 5118 else if (curix == 0 && curchnk->mlcs_numlines <= 0) | |
| 5119 { | |
| 5120 buf->b_ml.ml_usedchunks--; | |
| 5121 mch_memmove(buf->b_ml.ml_chunksize, buf->b_ml.ml_chunksize + 1, | |
| 5122 buf->b_ml.ml_usedchunks * sizeof(chunksize_T)); | |
| 5123 return; | |
| 5124 } | |
| 5125 else if (curix == 0 || (curchnk->mlcs_numlines > 10 | |
| 5126 && (curchnk->mlcs_numlines + curchnk[-1].mlcs_numlines) | |
| 5127 > MLCS_MINL)) | |
| 5128 { | |
| 5129 return; | |
| 5130 } | |
| 5131 | |
| 5132 /* Collapse chunks */ | |
| 5133 curchnk[-1].mlcs_numlines += curchnk->mlcs_numlines; | |
| 5134 curchnk[-1].mlcs_totalsize += curchnk->mlcs_totalsize; | |
| 5135 buf->b_ml.ml_usedchunks--; | |
| 5136 if (curix < buf->b_ml.ml_usedchunks) | |
| 5137 { | |
| 5138 mch_memmove(buf->b_ml.ml_chunksize + curix, | |
| 5139 buf->b_ml.ml_chunksize + curix + 1, | |
| 5140 (buf->b_ml.ml_usedchunks - curix) * | |
| 5141 sizeof(chunksize_T)); | |
| 5142 } | |
| 5143 return; | |
| 5144 } | |
| 5145 ml_upd_lastbuf = buf; | |
| 5146 ml_upd_lastline = line; | |
| 5147 ml_upd_lastcurline = curline; | |
| 5148 ml_upd_lastcurix = curix; | |
| 5149 } | |
| 5150 | |
| 5151 /* | |
| 5152 * Find offset for line or line with offset. | |
| 169 | 5153 * Find line with offset if "lnum" is 0; return remaining offset in offp |
| 5154 * Find offset of line if "lnum" > 0 | |
| 7 | 5155 * return -1 if information is not available |
| 5156 */ | |
| 5157 long | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
5158 ml_find_line_or_offset(buf_T *buf, linenr_T lnum, long *offp) |
| 7 | 5159 { |
| 5160 linenr_T curline; | |
| 5161 int curix; | |
| 5162 long size; | |
| 5163 bhdr_T *hp; | |
| 5164 DATA_BL *dp; | |
| 5165 int count; /* number of entries in block */ | |
| 5166 int idx; | |
| 5167 int start_idx; | |
| 5168 int text_end; | |
| 5169 long offset; | |
| 5170 int len; | |
| 5171 int ffdos = (get_fileformat(buf) == EOL_DOS); | |
| 5172 int extra = 0; | |
| 5173 | |
| 169 | 5174 /* take care of cached line first */ |
| 5175 ml_flush_line(curbuf); | |
| 5176 | |
| 7 | 5177 if (buf->b_ml.ml_usedchunks == -1 |
| 5178 || buf->b_ml.ml_chunksize == NULL | |
| 169 | 5179 || lnum < 0) |
| 7 | 5180 return -1; |
| 5181 | |
| 5182 if (offp == NULL) | |
| 5183 offset = 0; | |
| 5184 else | |
| 5185 offset = *offp; | |
| 169 | 5186 if (lnum == 0 && offset <= 0) |
| 7 | 5187 return 1; /* Not a "find offset" and offset 0 _must_ be in line 1 */ |
| 5188 /* | |
| 5189 * Find the last chunk before the one containing our line. Last chunk is | |
| 5190 * special because it will never qualify | |
| 5191 */ | |
| 5192 curline = 1; | |
| 5193 curix = size = 0; | |
| 5194 while (curix < buf->b_ml.ml_usedchunks - 1 | |
| 169 | 5195 && ((lnum != 0 |
| 5196 && lnum >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines) | |
| 7 | 5197 || (offset != 0 |
| 5198 && offset > size + buf->b_ml.ml_chunksize[curix].mlcs_totalsize | |
| 5199 + ffdos * buf->b_ml.ml_chunksize[curix].mlcs_numlines))) | |
| 5200 { | |
| 5201 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 5202 size += buf->b_ml.ml_chunksize[curix].mlcs_totalsize; | |
| 5203 if (offset && ffdos) | |
| 5204 size += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 5205 curix++; | |
| 5206 } | |
| 5207 | |
| 169 | 5208 while ((lnum != 0 && curline < lnum) || (offset != 0 && size < offset)) |
| 7 | 5209 { |
| 5210 if (curline > buf->b_ml.ml_line_count | |
| 5211 || (hp = ml_find_line(buf, curline, ML_FIND)) == NULL) | |
| 5212 return -1; | |
| 5213 dp = (DATA_BL *)(hp->bh_data); | |
| 5214 count = (long)(buf->b_ml.ml_locked_high) - | |
| 5215 (long)(buf->b_ml.ml_locked_low) + 1; | |
| 5216 start_idx = idx = curline - buf->b_ml.ml_locked_low; | |
| 5217 if (idx == 0)/* first line in block, text at the end */ | |
| 5218 text_end = dp->db_txt_end; | |
| 5219 else | |
| 5220 text_end = ((dp->db_index[idx - 1]) & DB_INDEX_MASK); | |
| 5221 /* Compute index of last line to use in this MEMLINE */ | |
| 169 | 5222 if (lnum != 0) |
| 7 | 5223 { |
| 169 | 5224 if (curline + (count - idx) >= lnum) |
| 5225 idx += lnum - curline - 1; | |
| 7 | 5226 else |
| 5227 idx = count - 1; | |
| 5228 } | |
| 5229 else | |
| 5230 { | |
| 5231 extra = 0; | |
| 5232 while (offset >= size | |
| 5233 + text_end - (int)((dp->db_index[idx]) & DB_INDEX_MASK) | |
| 5234 + ffdos) | |
| 5235 { | |
| 5236 if (ffdos) | |
| 5237 size++; | |
| 5238 if (idx == count - 1) | |
| 5239 { | |
| 5240 extra = 1; | |
| 5241 break; | |
| 5242 } | |
| 5243 idx++; | |
| 5244 } | |
| 5245 } | |
| 5246 len = text_end - ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 5247 size += len; | |
| 5248 if (offset != 0 && size >= offset) | |
| 5249 { | |
| 5250 if (size + ffdos == offset) | |
| 5251 *offp = 0; | |
| 5252 else if (idx == start_idx) | |
| 5253 *offp = offset - size + len; | |
| 5254 else | |
| 5255 *offp = offset - size + len | |
| 5256 - (text_end - ((dp->db_index[idx - 1]) & DB_INDEX_MASK)); | |
| 5257 curline += idx - start_idx + extra; | |
| 5258 if (curline > buf->b_ml.ml_line_count) | |
| 5259 return -1; /* exactly one byte beyond the end */ | |
| 5260 return curline; | |
| 5261 } | |
| 5262 curline = buf->b_ml.ml_locked_high + 1; | |
| 5263 } | |
| 5264 | |
| 169 | 5265 if (lnum != 0) |
| 20 | 5266 { |
| 5267 /* Count extra CR characters. */ | |
| 5268 if (ffdos) | |
| 169 | 5269 size += lnum - 1; |
| 20 | 5270 |
| 6933 | 5271 /* Don't count the last line break if 'noeol' and ('bin' or |
| 5272 * 'nofixeol'). */ | |
| 5273 if ((!buf->b_p_fixeol || buf->b_p_bin) && !buf->b_p_eol | |
| 5274 && buf->b_ml.ml_line_count == lnum) | |
| 20 | 5275 size -= ffdos + 1; |
| 5276 } | |
| 5277 | |
| 7 | 5278 return size; |
| 5279 } | |
| 5280 | |
| 5281 /* | |
| 5282 * Goto byte in buffer with offset 'cnt'. | |
| 5283 */ | |
| 5284 void | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
5285 goto_byte(long cnt) |
| 7 | 5286 { |
| 5287 long boff = cnt; | |
| 5288 linenr_T lnum; | |
| 5289 | |
| 5290 ml_flush_line(curbuf); /* cached line may be dirty */ | |
| 5291 setpcmark(); | |
| 5292 if (boff) | |
| 5293 --boff; | |
| 5294 lnum = ml_find_line_or_offset(curbuf, (linenr_T)0, &boff); | |
| 5295 if (lnum < 1) /* past the end */ | |
| 5296 { | |
| 5297 curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; | |
| 5298 curwin->w_curswant = MAXCOL; | |
| 5299 coladvance((colnr_T)MAXCOL); | |
| 5300 } | |
| 5301 else | |
| 5302 { | |
| 5303 curwin->w_cursor.lnum = lnum; | |
| 5304 curwin->w_cursor.col = (colnr_T)boff; | |
| 572 | 5305 # ifdef FEAT_VIRTUALEDIT |
| 5306 curwin->w_cursor.coladd = 0; | |
| 5307 # endif | |
| 7 | 5308 curwin->w_set_curswant = TRUE; |
| 5309 } | |
| 5310 check_cursor(); | |
| 5311 | |
| 5312 # ifdef FEAT_MBYTE | |
| 5313 /* Make sure the cursor is on the first byte of a multi-byte char. */ | |
| 5314 if (has_mbyte) | |
| 5315 mb_adjust_cursor(); | |
| 5316 # endif | |
| 5317 } | |
| 5318 #endif |