Mercurial > vim
annotate src/memline.c @ 3194:972bd3fca556 v7.3.367
updated for version 7.3.367
Problem: :wundo and :rundo use a wrong checksum.
Solution: Include the last line when computing the hash. (Christian Brabandt)
| author | Bram Moolenaar <bram@vim.org> |
|---|---|
| date | Thu, 08 Dec 2011 15:14:09 +0100 |
| parents | 075acc2dccaa |
| children | 8115f449a574 |
| 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 */ | |
| 7 | 66 |
| 67 /* | |
| 68 * pointer to a block, used in a pointer block | |
| 69 */ | |
| 70 struct pointer_entry | |
| 71 { | |
| 72 blocknr_T pe_bnum; /* block number */ | |
| 73 linenr_T pe_line_count; /* number of lines in this branch */ | |
| 74 linenr_T pe_old_lnum; /* lnum for this block (for recovery) */ | |
| 75 int pe_page_count; /* number of pages in block pe_bnum */ | |
| 76 }; | |
| 77 | |
| 78 /* | |
| 79 * A pointer block contains a list of branches in the tree. | |
| 80 */ | |
| 81 struct pointer_block | |
| 82 { | |
| 83 short_u pb_id; /* ID for pointer block: PTR_ID */ | |
|
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Add test for gettabvar() and settabvar().
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|
84 short_u pb_count; /* number of pointers in this block */ |
| 7 | 85 short_u pb_count_max; /* maximum value for pb_count */ |
| 86 PTR_EN pb_pointer[1]; /* list of pointers to blocks (actually longer) | |
| 87 * followed by empty space until end of page */ | |
| 88 }; | |
| 89 | |
| 90 /* | |
| 91 * A data block is a leaf in the tree. | |
| 92 * | |
| 93 * The text of the lines is at the end of the block. The text of the first line | |
| 94 * in the block is put at the end, the text of the second line in front of it, | |
| 95 * etc. Thus the order of the lines is the opposite of the line number. | |
| 96 */ | |
| 97 struct data_block | |
| 98 { | |
| 99 short_u db_id; /* ID for data block: DATA_ID */ | |
| 100 unsigned db_free; /* free space available */ | |
| 101 unsigned db_txt_start; /* byte where text starts */ | |
| 102 unsigned db_txt_end; /* byte just after data block */ | |
| 103 linenr_T db_line_count; /* number of lines in this block */ | |
| 104 unsigned db_index[1]; /* index for start of line (actually bigger) | |
| 105 * followed by empty space upto db_txt_start | |
| 106 * followed by the text in the lines until | |
| 107 * end of page */ | |
| 108 }; | |
| 109 | |
| 110 /* | |
| 111 * The low bits of db_index hold the actual index. The topmost bit is | |
| 112 * used for the global command to be able to mark a line. | |
| 113 * This method is not clean, but otherwise there would be at least one extra | |
| 114 * byte used for each line. | |
| 115 * The mark has to be in this place to keep it with the correct line when other | |
| 116 * lines are inserted or deleted. | |
| 117 */ | |
| 118 #define DB_MARKED ((unsigned)1 << ((sizeof(unsigned) * 8) - 1)) | |
| 119 #define DB_INDEX_MASK (~DB_MARKED) | |
| 120 | |
| 121 #define INDEX_SIZE (sizeof(unsigned)) /* size of one db_index entry */ | |
| 122 #define HEADER_SIZE (sizeof(DATA_BL) - INDEX_SIZE) /* size of data block header */ | |
| 123 | |
| 39 | 124 #define B0_FNAME_SIZE_ORG 900 /* what it was in older versions */ |
| 2267 | 125 #define B0_FNAME_SIZE_NOCRYPT 898 /* 2 bytes used for other things */ |
| 126 #define B0_FNAME_SIZE_CRYPT 890 /* 10 bytes used for other things */ | |
| 39 | 127 #define B0_UNAME_SIZE 40 |
| 128 #define B0_HNAME_SIZE 40 | |
| 7 | 129 /* |
| 130 * Restrict the numbers to 32 bits, otherwise most compilers will complain. | |
| 131 * This won't detect a 64 bit machine that only swaps a byte in the top 32 | |
| 132 * bits, but that is crazy anyway. | |
| 133 */ | |
| 134 #define B0_MAGIC_LONG 0x30313233L | |
| 135 #define B0_MAGIC_INT 0x20212223L | |
| 136 #define B0_MAGIC_SHORT 0x10111213L | |
| 137 #define B0_MAGIC_CHAR 0x55 | |
| 138 | |
| 139 /* | |
| 140 * Block zero holds all info about the swap file. | |
| 141 * | |
| 142 * NOTE: DEFINITION OF BLOCK 0 SHOULD NOT CHANGE! It would make all existing | |
| 143 * swap files unusable! | |
| 144 * | |
| 145 * If size of block0 changes anyway, adjust MIN_SWAP_PAGE_SIZE in vim.h!! | |
| 146 * | |
| 1228 | 147 * This block is built up of single bytes, to make it portable across |
| 7 | 148 * different machines. b0_magic_* is used to check the byte order and size of |
| 149 * variables, because the rest of the swap file is not portable. | |
| 150 */ | |
| 151 struct block0 | |
| 152 { | |
| 2267 | 153 char_u b0_id[2]; /* id for block 0: BLOCK0_ID0 and BLOCK0_ID1, |
| 154 * BLOCK0_ID1_C0, BLOCK0_ID1_C1 */ | |
| 7 | 155 char_u b0_version[10]; /* Vim version string */ |
| 156 char_u b0_page_size[4];/* number of bytes per page */ | |
| 157 char_u b0_mtime[4]; /* last modification time of file */ | |
| 158 char_u b0_ino[4]; /* inode of b0_fname */ | |
| 159 char_u b0_pid[4]; /* process id of creator (or 0) */ | |
| 160 char_u b0_uname[B0_UNAME_SIZE]; /* name of user (uid if no name) */ | |
| 161 char_u b0_hname[B0_HNAME_SIZE]; /* host name (if it has a name) */ | |
| 39 | 162 char_u b0_fname[B0_FNAME_SIZE_ORG]; /* name of file being edited */ |
| 7 | 163 long b0_magic_long; /* check for byte order of long */ |
| 164 int b0_magic_int; /* check for byte order of int */ | |
| 165 short b0_magic_short; /* check for byte order of short */ | |
| 166 char_u b0_magic_char; /* check for last char */ | |
| 167 }; | |
| 39 | 168 |
| 169 /* | |
| 625 | 170 * Note: b0_dirty and b0_flags are put at the end of the file name. For very |
| 39 | 171 * long file names in older versions of Vim they are invalid. |
| 172 * The 'fileencoding' comes before b0_flags, with a NUL in front. But only | |
| 173 * when there is room, for very long file names it's omitted. | |
| 174 */ | |
| 175 #define B0_DIRTY 0x55 | |
| 2267 | 176 #define b0_dirty b0_fname[B0_FNAME_SIZE_ORG - 1] |
| 39 | 177 |
| 178 /* | |
| 179 * The b0_flags field is new in Vim 7.0. | |
| 180 */ | |
| 2267 | 181 #define b0_flags b0_fname[B0_FNAME_SIZE_ORG - 2] |
| 182 | |
| 183 /* | |
| 184 * Crypt seed goes here, 8 bytes. New in Vim 7.3. | |
| 185 * Without encryption these bytes may be used for 'fenc'. | |
| 186 */ | |
| 187 #define b0_seed b0_fname[B0_FNAME_SIZE_ORG - 2 - MF_SEED_LEN] | |
| 39 | 188 |
| 189 /* The lowest two bits contain the fileformat. Zero means it's not set | |
| 190 * (compatible with Vim 6.x), otherwise it's EOL_UNIX + 1, EOL_DOS + 1 or | |
| 191 * EOL_MAC + 1. */ | |
| 192 #define B0_FF_MASK 3 | |
| 193 | |
| 194 /* Swap file is in directory of edited file. Used to find the file from | |
| 195 * different mount points. */ | |
| 196 #define B0_SAME_DIR 4 | |
| 197 | |
| 198 /* The 'fileencoding' is at the end of b0_fname[], with a NUL in front of it. | |
| 199 * When empty there is only the NUL. */ | |
| 200 #define B0_HAS_FENC 8 | |
| 7 | 201 |
| 202 #define STACK_INCR 5 /* nr of entries added to ml_stack at a time */ | |
| 203 | |
| 204 /* | |
| 205 * The line number where the first mark may be is remembered. | |
| 206 * If it is 0 there are no marks at all. | |
| 207 * (always used for the current buffer only, no buffer change possible while | |
| 208 * executing a global command). | |
| 209 */ | |
| 210 static linenr_T lowest_marked = 0; | |
| 211 | |
| 212 /* | |
| 213 * arguments for ml_find_line() | |
| 214 */ | |
| 215 #define ML_DELETE 0x11 /* delete line */ | |
| 216 #define ML_INSERT 0x12 /* insert line */ | |
| 217 #define ML_FIND 0x13 /* just find the line */ | |
| 218 #define ML_FLUSH 0x02 /* flush locked block */ | |
| 219 #define ML_SIMPLE(x) (x & 0x10) /* DEL, INS or FIND */ | |
| 220 | |
| 2267 | 221 /* argument for ml_upd_block0() */ |
| 222 typedef enum { | |
| 223 UB_FNAME = 0 /* update timestamp and filename */ | |
| 224 , UB_SAME_DIR /* update the B0_SAME_DIR flag */ | |
| 225 , UB_CRYPT /* update crypt key */ | |
| 226 } upd_block0_T; | |
| 227 | |
| 228 #ifdef FEAT_CRYPT | |
| 229 static void ml_set_b0_crypt __ARGS((buf_T *buf, ZERO_BL *b0p)); | |
| 230 #endif | |
| 231 static int ml_check_b0_id __ARGS((ZERO_BL *b0p)); | |
| 232 static void ml_upd_block0 __ARGS((buf_T *buf, upd_block0_T what)); | |
| 7 | 233 static void set_b0_fname __ARGS((ZERO_BL *, buf_T *buf)); |
| 39 | 234 static void set_b0_dir_flag __ARGS((ZERO_BL *b0p, buf_T *buf)); |
| 235 #ifdef FEAT_MBYTE | |
| 236 static void add_b0_fenc __ARGS((ZERO_BL *b0p, buf_T *buf)); | |
| 237 #endif | |
| 7 | 238 static time_t swapfile_info __ARGS((char_u *)); |
| 239 static int recov_file_names __ARGS((char_u **, char_u *, int prepend_dot)); | |
| 240 static int ml_append_int __ARGS((buf_T *, linenr_T, char_u *, colnr_T, int, int)); | |
| 241 static int ml_delete_int __ARGS((buf_T *, linenr_T, int)); | |
| 242 static char_u *findswapname __ARGS((buf_T *, char_u **, char_u *)); | |
| 243 static void ml_flush_line __ARGS((buf_T *)); | |
| 244 static bhdr_T *ml_new_data __ARGS((memfile_T *, int, int)); | |
| 245 static bhdr_T *ml_new_ptr __ARGS((memfile_T *)); | |
| 246 static bhdr_T *ml_find_line __ARGS((buf_T *, linenr_T, int)); | |
| 247 static int ml_add_stack __ARGS((buf_T *)); | |
| 248 static void ml_lineadd __ARGS((buf_T *, int)); | |
| 249 static int b0_magic_wrong __ARGS((ZERO_BL *)); | |
| 250 #ifdef CHECK_INODE | |
| 251 static int fnamecmp_ino __ARGS((char_u *, char_u *, long)); | |
| 252 #endif | |
| 253 static void long_to_char __ARGS((long, char_u *)); | |
| 254 static long char_to_long __ARGS((char_u *)); | |
| 255 #if defined(UNIX) || defined(WIN3264) | |
| 256 static char_u *make_percent_swname __ARGS((char_u *dir, char_u *name)); | |
| 257 #endif | |
| 2267 | 258 #ifdef FEAT_CRYPT |
| 259 static void ml_crypt_prepare __ARGS((memfile_T *mfp, off_t offset, int reading)); | |
| 260 #endif | |
| 7 | 261 #ifdef FEAT_BYTEOFF |
| 262 static void ml_updatechunk __ARGS((buf_T *buf, long line, long len, int updtype)); | |
| 263 #endif | |
| 264 | |
| 265 /* | |
| 625 | 266 * Open a new memline for "buf". |
| 7 | 267 * |
| 625 | 268 * Return FAIL for failure, OK otherwise. |
| 7 | 269 */ |
| 270 int | |
| 625 | 271 ml_open(buf) |
| 272 buf_T *buf; | |
| 7 | 273 { |
| 274 memfile_T *mfp; | |
| 275 bhdr_T *hp = NULL; | |
| 276 ZERO_BL *b0p; | |
| 277 PTR_BL *pp; | |
| 278 DATA_BL *dp; | |
| 279 | |
| 625 | 280 /* |
| 281 * init fields in memline struct | |
| 282 */ | |
| 2267 | 283 buf->b_ml.ml_stack_size = 0; /* no stack yet */ |
| 625 | 284 buf->b_ml.ml_stack = NULL; /* no stack yet */ |
| 285 buf->b_ml.ml_stack_top = 0; /* nothing in the stack */ | |
| 286 buf->b_ml.ml_locked = NULL; /* no cached block */ | |
| 287 buf->b_ml.ml_line_lnum = 0; /* no cached line */ | |
| 7 | 288 #ifdef FEAT_BYTEOFF |
| 625 | 289 buf->b_ml.ml_chunksize = NULL; |
| 7 | 290 #endif |
| 291 | |
| 625 | 292 /* |
| 293 * When 'updatecount' is non-zero swap file may be opened later. | |
| 294 */ | |
| 295 if (p_uc && buf->b_p_swf) | |
| 296 buf->b_may_swap = TRUE; | |
| 7 | 297 else |
| 625 | 298 buf->b_may_swap = FALSE; |
| 299 | |
| 300 /* | |
| 301 * Open the memfile. No swap file is created yet. | |
| 302 */ | |
| 7 | 303 mfp = mf_open(NULL, 0); |
| 304 if (mfp == NULL) | |
| 305 goto error; | |
| 306 | |
| 625 | 307 buf->b_ml.ml_mfp = mfp; |
| 2267 | 308 #ifdef FEAT_CRYPT |
| 309 mfp->mf_buffer = buf; | |
| 310 #endif | |
| 625 | 311 buf->b_ml.ml_flags = ML_EMPTY; |
| 312 buf->b_ml.ml_line_count = 1; | |
| 13 | 313 #ifdef FEAT_LINEBREAK |
| 314 curwin->w_nrwidth_line_count = 0; | |
| 315 #endif | |
| 7 | 316 |
| 317 #if defined(MSDOS) && !defined(DJGPP) | |
| 318 /* for 16 bit MS-DOS create a swapfile now, because we run out of | |
| 319 * memory very quickly */ | |
| 320 if (p_uc != 0) | |
| 625 | 321 ml_open_file(buf); |
| 7 | 322 #endif |
| 323 | |
| 324 /* | |
| 325 * fill block0 struct and write page 0 | |
| 326 */ | |
| 327 if ((hp = mf_new(mfp, FALSE, 1)) == NULL) | |
| 328 goto error; | |
| 329 if (hp->bh_bnum != 0) | |
| 330 { | |
| 331 EMSG(_("E298: Didn't get block nr 0?")); | |
| 332 goto error; | |
| 333 } | |
| 334 b0p = (ZERO_BL *)(hp->bh_data); | |
| 335 | |
| 336 b0p->b0_id[0] = BLOCK0_ID0; | |
| 337 b0p->b0_id[1] = BLOCK0_ID1; | |
| 338 b0p->b0_magic_long = (long)B0_MAGIC_LONG; | |
| 339 b0p->b0_magic_int = (int)B0_MAGIC_INT; | |
| 340 b0p->b0_magic_short = (short)B0_MAGIC_SHORT; | |
| 341 b0p->b0_magic_char = B0_MAGIC_CHAR; | |
| 342 STRNCPY(b0p->b0_version, "VIM ", 4); | |
| 343 STRNCPY(b0p->b0_version + 4, Version, 6); | |
| 344 long_to_char((long)mfp->mf_page_size, b0p->b0_page_size); | |
| 625 | 345 |
| 800 | 346 #ifdef FEAT_SPELL |
| 347 if (!buf->b_spell) | |
| 348 #endif | |
| 625 | 349 { |
| 350 b0p->b0_dirty = buf->b_changed ? B0_DIRTY : 0; | |
| 351 b0p->b0_flags = get_fileformat(buf) + 1; | |
| 352 set_b0_fname(b0p, buf); | |
| 353 (void)get_user_name(b0p->b0_uname, B0_UNAME_SIZE); | |
| 354 b0p->b0_uname[B0_UNAME_SIZE - 1] = NUL; | |
| 355 mch_get_host_name(b0p->b0_hname, B0_HNAME_SIZE); | |
| 356 b0p->b0_hname[B0_HNAME_SIZE - 1] = NUL; | |
| 357 long_to_char(mch_get_pid(), b0p->b0_pid); | |
| 2267 | 358 #ifdef FEAT_CRYPT |
| 359 if (*buf->b_p_key != NUL) | |
| 360 ml_set_b0_crypt(buf, b0p); | |
| 361 #endif | |
| 625 | 362 } |
| 7 | 363 |
| 364 /* | |
| 365 * Always sync block number 0 to disk, so we can check the file name in | |
| 2267 | 366 * the swap file in findswapname(). Don't do this for a help files or |
| 367 * a spell buffer though. | |
| 7 | 368 * Only works when there's a swapfile, otherwise it's done when the file |
| 369 * is created. | |
| 370 */ | |
| 371 mf_put(mfp, hp, TRUE, FALSE); | |
| 625 | 372 if (!buf->b_help && !B_SPELL(buf)) |
| 7 | 373 (void)mf_sync(mfp, 0); |
| 374 | |
| 625 | 375 /* |
| 376 * Fill in root pointer block and write page 1. | |
| 377 */ | |
| 7 | 378 if ((hp = ml_new_ptr(mfp)) == NULL) |
| 379 goto error; | |
| 380 if (hp->bh_bnum != 1) | |
| 381 { | |
| 382 EMSG(_("E298: Didn't get block nr 1?")); | |
| 383 goto error; | |
| 384 } | |
| 385 pp = (PTR_BL *)(hp->bh_data); | |
| 386 pp->pb_count = 1; | |
| 387 pp->pb_pointer[0].pe_bnum = 2; | |
| 388 pp->pb_pointer[0].pe_page_count = 1; | |
| 389 pp->pb_pointer[0].pe_old_lnum = 1; | |
| 390 pp->pb_pointer[0].pe_line_count = 1; /* line count after insertion */ | |
| 391 mf_put(mfp, hp, TRUE, FALSE); | |
| 392 | |
| 625 | 393 /* |
| 394 * Allocate first data block and create an empty line 1. | |
| 395 */ | |
| 7 | 396 if ((hp = ml_new_data(mfp, FALSE, 1)) == NULL) |
| 397 goto error; | |
| 398 if (hp->bh_bnum != 2) | |
| 399 { | |
| 400 EMSG(_("E298: Didn't get block nr 2?")); | |
| 401 goto error; | |
| 402 } | |
| 403 | |
| 404 dp = (DATA_BL *)(hp->bh_data); | |
| 405 dp->db_index[0] = --dp->db_txt_start; /* at end of block */ | |
| 406 dp->db_free -= 1 + INDEX_SIZE; | |
| 407 dp->db_line_count = 1; | |
| 2003 | 408 *((char_u *)dp + dp->db_txt_start) = NUL; /* empty line */ |
| 7 | 409 |
| 410 return OK; | |
| 411 | |
| 412 error: | |
| 413 if (mfp != NULL) | |
| 414 { | |
| 415 if (hp) | |
| 416 mf_put(mfp, hp, FALSE, FALSE); | |
| 417 mf_close(mfp, TRUE); /* will also free(mfp->mf_fname) */ | |
| 418 } | |
| 625 | 419 buf->b_ml.ml_mfp = NULL; |
| 7 | 420 return FAIL; |
| 421 } | |
| 422 | |
| 2267 | 423 #if defined(FEAT_CRYPT) || defined(PROTO) |
| 424 /* | |
| 425 * Prepare encryption for "buf" with block 0 "b0p". | |
| 426 */ | |
| 427 static void | |
| 428 ml_set_b0_crypt(buf, b0p) | |
| 429 buf_T *buf; | |
| 430 ZERO_BL *b0p; | |
| 431 { | |
| 432 if (*buf->b_p_key == NUL) | |
| 433 b0p->b0_id[1] = BLOCK0_ID1; | |
| 434 else | |
| 435 { | |
|
2360
d8e4b27cef80
Change 'cryptmethod' from a number to a string option. Make it global-local.
Bram Moolenaar <bram@vim.org>
parents:
2283
diff
changeset
|
436 if (get_crypt_method(buf) == 0) |
| 2267 | 437 b0p->b0_id[1] = BLOCK0_ID1_C0; |
| 438 else | |
| 439 { | |
| 440 b0p->b0_id[1] = BLOCK0_ID1_C1; | |
| 441 /* Generate a seed and store it in block 0 and in the memfile. */ | |
| 442 sha2_seed(&b0p->b0_seed, MF_SEED_LEN, NULL, 0); | |
| 443 mch_memmove(buf->b_ml.ml_mfp->mf_seed, &b0p->b0_seed, MF_SEED_LEN); | |
| 444 } | |
| 445 } | |
| 446 } | |
| 447 | |
| 448 /* | |
| 449 * Called after the crypt key or 'cryptmethod' was changed for "buf". | |
| 450 * Will apply this to the swapfile. | |
| 451 * "old_key" is the previous key. It is equal to buf->b_p_key when | |
| 452 * 'cryptmethod' is changed. | |
|
2360
d8e4b27cef80
Change 'cryptmethod' from a number to a string option. Make it global-local.
Bram Moolenaar <bram@vim.org>
parents:
2283
diff
changeset
|
453 * "old_cm" is the previous 'cryptmethod'. It is equal to the current |
|
d8e4b27cef80
Change 'cryptmethod' from a number to a string option. Make it global-local.
Bram Moolenaar <bram@vim.org>
parents:
2283
diff
changeset
|
454 * 'cryptmethod' when 'key' is changed. |
| 2267 | 455 */ |
| 456 void | |
| 457 ml_set_crypt_key(buf, old_key, old_cm) | |
| 458 buf_T *buf; | |
| 459 char_u *old_key; | |
| 460 int old_cm; | |
| 461 { | |
| 462 memfile_T *mfp = buf->b_ml.ml_mfp; | |
| 463 bhdr_T *hp; | |
| 464 int page_count; | |
| 465 int idx; | |
| 466 long error; | |
| 467 infoptr_T *ip; | |
| 468 PTR_BL *pp; | |
| 469 DATA_BL *dp; | |
| 470 blocknr_T bnum; | |
| 471 int top; | |
| 472 | |
|
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Fix: when setting crypt key seed was not updated when the swap file wasn't
Bram Moolenaar <bram@vim.org>
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diff
changeset
|
473 if (mfp == NULL) |
| 2267 | 474 return; /* no memfile yet, nothing to do */ |
| 475 | |
| 476 /* Set the key, method and seed to be used for reading, these must be the | |
| 477 * old values. */ | |
| 478 mfp->mf_old_key = old_key; | |
| 479 mfp->mf_old_cm = old_cm; | |
| 480 if (old_cm > 0) | |
| 481 mch_memmove(mfp->mf_old_seed, mfp->mf_seed, MF_SEED_LEN); | |
| 482 | |
| 483 /* Update block 0 with the crypt flag and may set a new seed. */ | |
| 484 ml_upd_block0(buf, UB_CRYPT); | |
| 485 | |
| 486 if (mfp->mf_infile_count > 2) | |
| 487 { | |
| 488 /* | |
| 489 * Need to read back all data blocks from disk, decrypt them with the | |
| 490 * old key/method and mark them to be written. The algorithm is | |
| 491 * similar to what happens in ml_recover(), but we skip negative block | |
| 492 * numbers. | |
| 493 */ | |
| 494 ml_flush_line(buf); /* flush buffered line */ | |
| 495 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
| 496 | |
| 497 hp = NULL; | |
| 498 bnum = 1; /* start with block 1 */ | |
| 499 page_count = 1; /* which is 1 page */ | |
| 500 idx = 0; /* start with first index in block 1 */ | |
| 501 error = 0; | |
| 502 buf->b_ml.ml_stack_top = 0; | |
|
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Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
503 vim_free(buf->b_ml.ml_stack); |
| 2267 | 504 buf->b_ml.ml_stack = NULL; |
| 505 buf->b_ml.ml_stack_size = 0; /* no stack yet */ | |
| 506 | |
| 507 for ( ; !got_int; line_breakcheck()) | |
| 508 { | |
| 509 if (hp != NULL) | |
| 510 mf_put(mfp, hp, FALSE, FALSE); /* release previous block */ | |
| 511 | |
| 512 /* get the block (pointer or data) */ | |
| 513 if ((hp = mf_get(mfp, (blocknr_T)bnum, page_count)) == NULL) | |
| 514 { | |
| 515 if (bnum == 1) | |
| 516 break; | |
| 517 ++error; | |
| 518 } | |
| 519 else | |
| 520 { | |
| 521 pp = (PTR_BL *)(hp->bh_data); | |
| 522 if (pp->pb_id == PTR_ID) /* it is a pointer block */ | |
| 523 { | |
| 524 if (pp->pb_count == 0) | |
| 525 { | |
| 526 /* empty block? */ | |
| 527 ++error; | |
| 528 } | |
| 529 else if (idx < (int)pp->pb_count) /* go a block deeper */ | |
| 530 { | |
| 531 if (pp->pb_pointer[idx].pe_bnum < 0) | |
| 532 { | |
| 533 /* Skip data block with negative block number. */ | |
| 534 ++idx; /* get same block again for next index */ | |
| 535 continue; | |
| 536 } | |
| 537 | |
| 538 /* going one block deeper in the tree, new entry in | |
| 539 * stack */ | |
| 540 if ((top = ml_add_stack(buf)) < 0) | |
| 541 { | |
| 542 ++error; | |
| 543 break; /* out of memory */ | |
| 544 } | |
| 545 ip = &(buf->b_ml.ml_stack[top]); | |
| 546 ip->ip_bnum = bnum; | |
| 547 ip->ip_index = idx; | |
| 548 | |
| 549 bnum = pp->pb_pointer[idx].pe_bnum; | |
| 550 page_count = pp->pb_pointer[idx].pe_page_count; | |
| 551 continue; | |
| 552 } | |
| 553 } | |
| 554 else /* not a pointer block */ | |
| 555 { | |
| 556 dp = (DATA_BL *)(hp->bh_data); | |
| 557 if (dp->db_id != DATA_ID) /* block id wrong */ | |
| 558 ++error; | |
| 559 else | |
| 560 { | |
| 561 /* It is a data block, need to write it back to disk. */ | |
| 562 mf_put(mfp, hp, TRUE, FALSE); | |
| 563 hp = NULL; | |
| 564 } | |
| 565 } | |
| 566 } | |
| 567 | |
| 568 if (buf->b_ml.ml_stack_top == 0) /* finished */ | |
| 569 break; | |
| 570 | |
| 571 /* go one block up in the tree */ | |
| 572 ip = &(buf->b_ml.ml_stack[--(buf->b_ml.ml_stack_top)]); | |
| 573 bnum = ip->ip_bnum; | |
| 574 idx = ip->ip_index + 1; /* go to next index */ | |
| 575 page_count = 1; | |
| 576 } | |
| 2657 | 577 |
| 578 if (error > 0) | |
| 579 EMSG(_("E843: Error while updating swap file crypt")); | |
| 2267 | 580 } |
| 581 | |
| 582 mfp->mf_old_key = NULL; | |
| 583 } | |
| 584 #endif | |
| 585 | |
| 7 | 586 /* |
| 587 * ml_setname() is called when the file name of "buf" has been changed. | |
| 588 * It may rename the swap file. | |
| 589 */ | |
| 590 void | |
| 591 ml_setname(buf) | |
| 592 buf_T *buf; | |
| 593 { | |
| 594 int success = FALSE; | |
| 595 memfile_T *mfp; | |
| 596 char_u *fname; | |
| 597 char_u *dirp; | |
| 598 #if defined(MSDOS) || defined(MSWIN) | |
| 599 char_u *p; | |
| 600 #endif | |
| 601 | |
| 602 mfp = buf->b_ml.ml_mfp; | |
| 603 if (mfp->mf_fd < 0) /* there is no swap file yet */ | |
| 604 { | |
| 605 /* | |
| 606 * When 'updatecount' is 0 and 'noswapfile' there is no swap file. | |
| 607 * For help files we will make a swap file now. | |
| 608 */ | |
| 609 if (p_uc != 0) | |
| 610 ml_open_file(buf); /* create a swap file */ | |
| 611 return; | |
| 612 } | |
| 613 | |
| 614 /* | |
| 615 * Try all directories in the 'directory' option. | |
| 616 */ | |
| 617 dirp = p_dir; | |
| 618 for (;;) | |
| 619 { | |
| 620 if (*dirp == NUL) /* tried all directories, fail */ | |
| 621 break; | |
| 43 | 622 fname = findswapname(buf, &dirp, mfp->mf_fname); |
| 623 /* alloc's fname */ | |
| 3158 | 624 if (dirp == NULL) /* out of memory */ |
| 625 break; | |
| 7 | 626 if (fname == NULL) /* no file name found for this dir */ |
| 627 continue; | |
| 628 | |
| 629 #if defined(MSDOS) || defined(MSWIN) | |
| 630 /* | |
| 631 * Set full pathname for swap file now, because a ":!cd dir" may | |
| 632 * change directory without us knowing it. | |
| 633 */ | |
| 634 p = FullName_save(fname, FALSE); | |
| 635 vim_free(fname); | |
| 636 fname = p; | |
| 637 if (fname == NULL) | |
| 638 continue; | |
| 639 #endif | |
| 640 /* if the file name is the same we don't have to do anything */ | |
| 641 if (fnamecmp(fname, mfp->mf_fname) == 0) | |
| 642 { | |
| 643 vim_free(fname); | |
| 644 success = TRUE; | |
| 645 break; | |
| 646 } | |
| 647 /* need to close the swap file before renaming */ | |
| 648 if (mfp->mf_fd >= 0) | |
| 649 { | |
| 650 close(mfp->mf_fd); | |
| 651 mfp->mf_fd = -1; | |
| 652 } | |
| 653 | |
| 654 /* try to rename the swap file */ | |
| 655 if (vim_rename(mfp->mf_fname, fname) == 0) | |
| 656 { | |
| 657 success = TRUE; | |
| 658 vim_free(mfp->mf_fname); | |
| 659 mfp->mf_fname = fname; | |
| 660 vim_free(mfp->mf_ffname); | |
| 661 #if defined(MSDOS) || defined(MSWIN) | |
| 662 mfp->mf_ffname = NULL; /* mf_fname is full pathname already */ | |
| 663 #else | |
| 664 mf_set_ffname(mfp); | |
| 665 #endif | |
| 2267 | 666 ml_upd_block0(buf, UB_SAME_DIR); |
| 7 | 667 break; |
| 668 } | |
| 669 vim_free(fname); /* this fname didn't work, try another */ | |
| 670 } | |
| 671 | |
| 672 if (mfp->mf_fd == -1) /* need to (re)open the swap file */ | |
| 673 { | |
| 674 mfp->mf_fd = mch_open((char *)mfp->mf_fname, O_RDWR | O_EXTRA, 0); | |
| 675 if (mfp->mf_fd < 0) | |
| 676 { | |
| 677 /* could not (re)open the swap file, what can we do???? */ | |
| 678 EMSG(_("E301: Oops, lost the swap file!!!")); | |
| 679 return; | |
| 680 } | |
| 2003 | 681 #ifdef HAVE_FD_CLOEXEC |
| 682 { | |
| 683 int fdflags = fcntl(mfp->mf_fd, F_GETFD); | |
| 684 if (fdflags >= 0 && (fdflags & FD_CLOEXEC) == 0) | |
| 685 fcntl(mfp->mf_fd, F_SETFD, fdflags | FD_CLOEXEC); | |
| 686 } | |
| 687 #endif | |
| 7 | 688 } |
| 689 if (!success) | |
| 690 EMSG(_("E302: Could not rename swap file")); | |
| 691 } | |
| 692 | |
| 693 /* | |
| 694 * Open a file for the memfile for all buffers that are not readonly or have | |
| 695 * been modified. | |
| 696 * Used when 'updatecount' changes from zero to non-zero. | |
| 697 */ | |
| 698 void | |
| 699 ml_open_files() | |
| 700 { | |
| 701 buf_T *buf; | |
| 702 | |
| 703 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
| 704 if (!buf->b_p_ro || buf->b_changed) | |
| 705 ml_open_file(buf); | |
| 706 } | |
| 707 | |
| 708 /* | |
| 709 * Open a swap file for an existing memfile, if there is no swap file yet. | |
| 710 * If we are unable to find a file name, mf_fname will be NULL | |
| 711 * and the memfile will be in memory only (no recovery possible). | |
| 712 */ | |
| 713 void | |
| 714 ml_open_file(buf) | |
| 715 buf_T *buf; | |
| 716 { | |
| 717 memfile_T *mfp; | |
| 718 char_u *fname; | |
| 719 char_u *dirp; | |
| 720 | |
| 721 mfp = buf->b_ml.ml_mfp; | |
| 722 if (mfp == NULL || mfp->mf_fd >= 0 || !buf->b_p_swf) | |
| 723 return; /* nothing to do */ | |
| 724 | |
| 748 | 725 #ifdef FEAT_SPELL |
| 625 | 726 /* For a spell buffer use a temp file name. */ |
| 727 if (buf->b_spell) | |
| 728 { | |
| 729 fname = vim_tempname('s'); | |
| 730 if (fname != NULL) | |
| 731 (void)mf_open_file(mfp, fname); /* consumes fname! */ | |
| 732 buf->b_may_swap = FALSE; | |
| 733 return; | |
| 734 } | |
| 735 #endif | |
| 736 | |
| 7 | 737 /* |
| 738 * Try all directories in 'directory' option. | |
| 739 */ | |
| 740 dirp = p_dir; | |
| 741 for (;;) | |
| 742 { | |
| 743 if (*dirp == NUL) | |
| 744 break; | |
|
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Bram Moolenaar <bram@vim.org>
parents:
2272
diff
changeset
|
745 /* There is a small chance that between choosing the swap file name |
|
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Bram Moolenaar <bram@vim.org>
parents:
2272
diff
changeset
|
746 * and creating it, another Vim creates the file. In that case the |
| 7 | 747 * creation will fail and we will use another directory. */ |
| 43 | 748 fname = findswapname(buf, &dirp, NULL); /* allocates fname */ |
| 3158 | 749 if (dirp == NULL) |
| 750 break; /* out of memory */ | |
| 7 | 751 if (fname == NULL) |
| 752 continue; | |
| 753 if (mf_open_file(mfp, fname) == OK) /* consumes fname! */ | |
| 754 { | |
| 2823 | 755 #if defined(MSDOS) || defined(MSWIN) |
| 7 | 756 /* |
| 757 * set full pathname for swap file now, because a ":!cd dir" may | |
| 758 * change directory without us knowing it. | |
| 759 */ | |
| 760 mf_fullname(mfp); | |
| 761 #endif | |
| 2267 | 762 ml_upd_block0(buf, UB_SAME_DIR); |
| 39 | 763 |
| 7 | 764 /* Flush block zero, so others can read it */ |
| 765 if (mf_sync(mfp, MFS_ZERO) == OK) | |
| 630 | 766 { |
| 767 /* Mark all blocks that should be in the swapfile as dirty. | |
| 768 * Needed for when the 'swapfile' option was reset, so that | |
| 769 * the swap file was deleted, and then on again. */ | |
| 770 mf_set_dirty(mfp); | |
| 7 | 771 break; |
| 630 | 772 } |
| 7 | 773 /* Writing block 0 failed: close the file and try another dir */ |
| 774 mf_close_file(buf, FALSE); | |
| 775 } | |
| 776 } | |
| 777 | |
| 778 if (mfp->mf_fname == NULL) /* Failed! */ | |
| 779 { | |
| 780 need_wait_return = TRUE; /* call wait_return later */ | |
| 781 ++no_wait_return; | |
| 782 (void)EMSG2(_("E303: Unable to open swap file for \"%s\", recovery impossible"), | |
| 783 buf_spname(buf) != NULL | |
| 784 ? (char_u *)buf_spname(buf) | |
| 785 : buf->b_fname); | |
| 786 --no_wait_return; | |
| 787 } | |
| 788 | |
| 789 /* don't try to open a swap file again */ | |
| 790 buf->b_may_swap = FALSE; | |
| 791 } | |
| 792 | |
| 793 /* | |
| 794 * If still need to create a swap file, and starting to edit a not-readonly | |
| 795 * file, or reading into an existing buffer, create a swap file now. | |
| 796 */ | |
| 797 void | |
| 798 check_need_swap(newfile) | |
| 799 int newfile; /* reading file into new buffer */ | |
| 800 { | |
| 801 if (curbuf->b_may_swap && (!curbuf->b_p_ro || !newfile)) | |
| 802 ml_open_file(curbuf); | |
| 803 } | |
| 804 | |
| 805 /* | |
| 806 * Close memline for buffer 'buf'. | |
| 807 * If 'del_file' is TRUE, delete the swap file | |
| 808 */ | |
| 809 void | |
| 810 ml_close(buf, del_file) | |
| 811 buf_T *buf; | |
| 812 int del_file; | |
| 813 { | |
| 814 if (buf->b_ml.ml_mfp == NULL) /* not open */ | |
| 815 return; | |
| 816 mf_close(buf->b_ml.ml_mfp, del_file); /* close the .swp file */ | |
| 817 if (buf->b_ml.ml_line_lnum != 0 && (buf->b_ml.ml_flags & ML_LINE_DIRTY)) | |
| 818 vim_free(buf->b_ml.ml_line_ptr); | |
| 819 vim_free(buf->b_ml.ml_stack); | |
| 820 #ifdef FEAT_BYTEOFF | |
| 821 vim_free(buf->b_ml.ml_chunksize); | |
| 822 buf->b_ml.ml_chunksize = NULL; | |
| 823 #endif | |
| 824 buf->b_ml.ml_mfp = NULL; | |
| 825 | |
| 826 /* Reset the "recovered" flag, give the ATTENTION prompt the next time | |
| 827 * this buffer is loaded. */ | |
| 828 buf->b_flags &= ~BF_RECOVERED; | |
| 829 } | |
| 830 | |
| 831 /* | |
| 832 * Close all existing memlines and memfiles. | |
| 833 * Only used when exiting. | |
| 834 * When 'del_file' is TRUE, delete the memfiles. | |
| 165 | 835 * But don't delete files that were ":preserve"d when we are POSIX compatible. |
| 7 | 836 */ |
| 837 void | |
| 838 ml_close_all(del_file) | |
| 839 int del_file; | |
| 840 { | |
| 841 buf_T *buf; | |
| 842 | |
| 843 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
| 165 | 844 ml_close(buf, del_file && ((buf->b_flags & BF_PRESERVED) == 0 |
| 845 || vim_strchr(p_cpo, CPO_PRESERVE) == NULL)); | |
| 7 | 846 #ifdef TEMPDIRNAMES |
| 847 vim_deltempdir(); /* delete created temp directory */ | |
| 848 #endif | |
| 849 } | |
| 850 | |
| 851 /* | |
| 852 * Close all memfiles for not modified buffers. | |
| 853 * Only use just before exiting! | |
| 854 */ | |
| 855 void | |
| 856 ml_close_notmod() | |
| 857 { | |
| 858 buf_T *buf; | |
| 859 | |
| 860 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
| 861 if (!bufIsChanged(buf)) | |
| 862 ml_close(buf, TRUE); /* close all not-modified buffers */ | |
| 863 } | |
| 864 | |
| 865 /* | |
| 866 * Update the timestamp in the .swp file. | |
| 867 * Used when the file has been written. | |
| 868 */ | |
| 869 void | |
| 870 ml_timestamp(buf) | |
| 871 buf_T *buf; | |
| 872 { | |
| 2267 | 873 ml_upd_block0(buf, UB_FNAME); |
| 874 } | |
| 875 | |
| 876 /* | |
| 877 * Return FAIL when the ID of "b0p" is wrong. | |
| 878 */ | |
| 879 static int | |
| 880 ml_check_b0_id(b0p) | |
| 881 ZERO_BL *b0p; | |
| 882 { | |
| 883 if (b0p->b0_id[0] != BLOCK0_ID0 | |
| 884 || (b0p->b0_id[1] != BLOCK0_ID1 | |
| 885 && b0p->b0_id[1] != BLOCK0_ID1_C0 | |
| 886 && b0p->b0_id[1] != BLOCK0_ID1_C1) | |
| 887 ) | |
| 888 return FAIL; | |
| 889 return OK; | |
| 39 | 890 } |
| 891 | |
| 892 /* | |
| 893 * Update the timestamp or the B0_SAME_DIR flag of the .swp file. | |
| 894 */ | |
| 895 static void | |
| 2267 | 896 ml_upd_block0(buf, what) |
| 39 | 897 buf_T *buf; |
| 2267 | 898 upd_block0_T what; |
| 39 | 899 { |
| 7 | 900 memfile_T *mfp; |
| 901 bhdr_T *hp; | |
| 902 ZERO_BL *b0p; | |
| 903 | |
| 904 mfp = buf->b_ml.ml_mfp; | |
| 905 if (mfp == NULL || (hp = mf_get(mfp, (blocknr_T)0, 1)) == NULL) | |
| 906 return; | |
| 907 b0p = (ZERO_BL *)(hp->bh_data); | |
| 2267 | 908 if (ml_check_b0_id(b0p) == FAIL) |
| 39 | 909 EMSG(_("E304: ml_upd_block0(): Didn't get block 0??")); |
| 7 | 910 else |
| 39 | 911 { |
| 2267 | 912 if (what == UB_FNAME) |
| 39 | 913 set_b0_fname(b0p, buf); |
| 2267 | 914 #ifdef FEAT_CRYPT |
| 915 else if (what == UB_CRYPT) | |
| 916 ml_set_b0_crypt(buf, b0p); | |
| 917 #endif | |
| 918 else /* what == UB_SAME_DIR */ | |
| 39 | 919 set_b0_dir_flag(b0p, buf); |
| 920 } | |
| 7 | 921 mf_put(mfp, hp, TRUE, FALSE); |
| 922 } | |
| 923 | |
| 924 /* | |
| 925 * Write file name and timestamp into block 0 of a swap file. | |
| 926 * Also set buf->b_mtime. | |
| 927 * Don't use NameBuff[]!!! | |
| 928 */ | |
| 929 static void | |
| 930 set_b0_fname(b0p, buf) | |
| 931 ZERO_BL *b0p; | |
| 932 buf_T *buf; | |
| 933 { | |
| 934 struct stat st; | |
| 935 | |
| 936 if (buf->b_ffname == NULL) | |
| 937 b0p->b0_fname[0] = NUL; | |
| 938 else | |
| 939 { | |
| 2823 | 940 #if defined(MSDOS) || defined(MSWIN) || defined(AMIGA) |
| 39 | 941 /* Systems that cannot translate "~user" back into a path: copy the |
| 942 * file name unmodified. Do use slashes instead of backslashes for | |
| 943 * portability. */ | |
| 2267 | 944 vim_strncpy(b0p->b0_fname, buf->b_ffname, B0_FNAME_SIZE_CRYPT - 1); |
| 39 | 945 # ifdef BACKSLASH_IN_FILENAME |
| 946 forward_slash(b0p->b0_fname); | |
| 947 # endif | |
| 7 | 948 #else |
| 949 size_t flen, ulen; | |
| 950 char_u uname[B0_UNAME_SIZE]; | |
| 951 | |
| 952 /* | |
| 953 * For a file under the home directory of the current user, we try to | |
| 954 * replace the home directory path with "~user". This helps when | |
| 955 * editing the same file on different machines over a network. | |
| 956 * First replace home dir path with "~/" with home_replace(). | |
| 957 * Then insert the user name to get "~user/". | |
| 958 */ | |
| 2267 | 959 home_replace(NULL, buf->b_ffname, b0p->b0_fname, |
| 960 B0_FNAME_SIZE_CRYPT, TRUE); | |
| 7 | 961 if (b0p->b0_fname[0] == '~') |
| 962 { | |
| 963 flen = STRLEN(b0p->b0_fname); | |
| 964 /* If there is no user name or it is too long, don't use "~/" */ | |
| 965 if (get_user_name(uname, B0_UNAME_SIZE) == FAIL | |
| 2267 | 966 || (ulen = STRLEN(uname)) + flen > B0_FNAME_SIZE_CRYPT - 1) |
| 967 vim_strncpy(b0p->b0_fname, buf->b_ffname, | |
| 968 B0_FNAME_SIZE_CRYPT - 1); | |
| 7 | 969 else |
| 970 { | |
| 971 mch_memmove(b0p->b0_fname + ulen + 1, b0p->b0_fname + 1, flen); | |
| 972 mch_memmove(b0p->b0_fname + 1, uname, ulen); | |
| 973 } | |
| 974 } | |
| 975 #endif | |
| 976 if (mch_stat((char *)buf->b_ffname, &st) >= 0) | |
| 977 { | |
| 978 long_to_char((long)st.st_mtime, b0p->b0_mtime); | |
| 979 #ifdef CHECK_INODE | |
| 980 long_to_char((long)st.st_ino, b0p->b0_ino); | |
| 981 #endif | |
| 982 buf_store_time(buf, &st, buf->b_ffname); | |
| 983 buf->b_mtime_read = buf->b_mtime; | |
| 984 } | |
| 985 else | |
| 986 { | |
| 987 long_to_char(0L, b0p->b0_mtime); | |
| 988 #ifdef CHECK_INODE | |
| 989 long_to_char(0L, b0p->b0_ino); | |
| 990 #endif | |
| 991 buf->b_mtime = 0; | |
| 992 buf->b_mtime_read = 0; | |
| 993 buf->b_orig_size = 0; | |
| 994 buf->b_orig_mode = 0; | |
| 995 } | |
| 996 } | |
| 39 | 997 |
| 998 #ifdef FEAT_MBYTE | |
| 999 /* Also add the 'fileencoding' if there is room. */ | |
| 1000 add_b0_fenc(b0p, curbuf); | |
| 1001 #endif | |
| 7 | 1002 } |
| 1003 | |
| 1004 /* | |
| 39 | 1005 * Update the B0_SAME_DIR flag of the swap file. It's set if the file and the |
| 1006 * swapfile for "buf" are in the same directory. | |
| 1007 * This is fail safe: if we are not sure the directories are equal the flag is | |
| 1008 * not set. | |
| 1009 */ | |
| 1010 static void | |
| 1011 set_b0_dir_flag(b0p, buf) | |
| 1012 ZERO_BL *b0p; | |
| 1013 buf_T *buf; | |
| 1014 { | |
| 1015 if (same_directory(buf->b_ml.ml_mfp->mf_fname, buf->b_ffname)) | |
| 1016 b0p->b0_flags |= B0_SAME_DIR; | |
| 1017 else | |
| 1018 b0p->b0_flags &= ~B0_SAME_DIR; | |
| 1019 } | |
| 1020 | |
| 1021 #ifdef FEAT_MBYTE | |
| 1022 /* | |
| 1023 * When there is room, add the 'fileencoding' to block zero. | |
| 1024 */ | |
| 1025 static void | |
| 1026 add_b0_fenc(b0p, buf) | |
| 1027 ZERO_BL *b0p; | |
| 1028 buf_T *buf; | |
| 1029 { | |
| 1030 int n; | |
| 2267 | 1031 int size = B0_FNAME_SIZE_NOCRYPT; |
| 1032 | |
| 1033 # ifdef FEAT_CRYPT | |
| 1034 /* Without encryption use the same offset as in Vim 7.2 to be compatible. | |
| 1035 * With encryption it's OK to move elsewhere, the swap file is not | |
| 1036 * compatible anyway. */ | |
| 1037 if (*buf->b_p_key != NUL) | |
| 1038 size = B0_FNAME_SIZE_CRYPT; | |
| 1039 # endif | |
| 39 | 1040 |
| 835 | 1041 n = (int)STRLEN(buf->b_p_fenc); |
| 2267 | 1042 if ((int)STRLEN(b0p->b0_fname) + n + 1 > size) |
| 39 | 1043 b0p->b0_flags &= ~B0_HAS_FENC; |
| 1044 else | |
| 1045 { | |
| 2267 | 1046 mch_memmove((char *)b0p->b0_fname + size - n, |
| 39 | 1047 (char *)buf->b_p_fenc, (size_t)n); |
| 2267 | 1048 *(b0p->b0_fname + size - n - 1) = NUL; |
| 39 | 1049 b0p->b0_flags |= B0_HAS_FENC; |
| 1050 } | |
| 1051 } | |
| 1052 #endif | |
| 1053 | |
| 1054 | |
| 1055 /* | |
| 2267 | 1056 * Try to recover curbuf from the .swp file. |
| 7 | 1057 */ |
| 1058 void | |
| 1059 ml_recover() | |
| 1060 { | |
| 1061 buf_T *buf = NULL; | |
| 1062 memfile_T *mfp = NULL; | |
| 1063 char_u *fname; | |
| 2267 | 1064 char_u *fname_used = NULL; |
| 7 | 1065 bhdr_T *hp = NULL; |
| 1066 ZERO_BL *b0p; | |
| 39 | 1067 int b0_ff; |
| 1068 char_u *b0_fenc = NULL; | |
| 2267 | 1069 #ifdef FEAT_CRYPT |
| 1070 int b0_cm = -1; | |
| 1071 #endif | |
| 7 | 1072 PTR_BL *pp; |
| 1073 DATA_BL *dp; | |
| 1074 infoptr_T *ip; | |
| 1075 blocknr_T bnum; | |
| 1076 int page_count; | |
| 1077 struct stat org_stat, swp_stat; | |
| 1078 int len; | |
| 1079 int directly; | |
| 1080 linenr_T lnum; | |
| 1081 char_u *p; | |
| 1082 int i; | |
| 1083 long error; | |
| 1084 int cannot_open; | |
| 1085 linenr_T line_count; | |
| 1086 int has_error; | |
| 1087 int idx; | |
| 1088 int top; | |
| 1089 int txt_start; | |
| 1090 off_t size; | |
| 1091 int called_from_main; | |
| 1092 int serious_error = TRUE; | |
| 1093 long mtime; | |
| 1094 int attr; | |
|
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After recovery check if the text changed. If it did mark the buffer as
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diff
changeset
|
1095 int orig_file_status = NOTDONE; |
| 7 | 1096 |
| 1097 recoverymode = TRUE; | |
| 1098 called_from_main = (curbuf->b_ml.ml_mfp == NULL); | |
| 1099 attr = hl_attr(HLF_E); | |
| 1975 | 1100 |
| 1101 /* | |
| 1102 * If the file name ends in ".s[uvw][a-z]" we assume this is the swap file. | |
| 1103 * Otherwise a search is done to find the swap file(s). | |
| 1104 */ | |
| 7 | 1105 fname = curbuf->b_fname; |
| 1106 if (fname == NULL) /* When there is no file name */ | |
| 1107 fname = (char_u *)""; | |
| 1108 len = (int)STRLEN(fname); | |
| 1109 if (len >= 4 && | |
| 2823 | 1110 #if defined(VMS) |
| 1975 | 1111 STRNICMP(fname + len - 4, "_s" , 2) |
| 7 | 1112 #else |
| 1975 | 1113 STRNICMP(fname + len - 4, ".s" , 2) |
| 7 | 1114 #endif |
| 1975 | 1115 == 0 |
| 1116 && vim_strchr((char_u *)"UVWuvw", fname[len - 2]) != NULL | |
| 1117 && ASCII_ISALPHA(fname[len - 1])) | |
| 7 | 1118 { |
| 1119 directly = TRUE; | |
| 2267 | 1120 fname_used = vim_strsave(fname); /* make a copy for mf_open() */ |
| 7 | 1121 } |
| 1122 else | |
| 1123 { | |
| 1124 directly = FALSE; | |
| 1125 | |
| 1126 /* count the number of matching swap files */ | |
| 2267 | 1127 len = recover_names(fname, FALSE, 0, NULL); |
| 7 | 1128 if (len == 0) /* no swap files found */ |
| 1129 { | |
| 1130 EMSG2(_("E305: No swap file found for %s"), fname); | |
| 1131 goto theend; | |
| 1132 } | |
| 1133 if (len == 1) /* one swap file found, use it */ | |
| 1134 i = 1; | |
| 1135 else /* several swap files found, choose */ | |
| 1136 { | |
| 1137 /* list the names of the swap files */ | |
| 2267 | 1138 (void)recover_names(fname, TRUE, 0, NULL); |
| 7 | 1139 msg_putchar('\n'); |
| 1140 MSG_PUTS(_("Enter number of swap file to use (0 to quit): ")); | |
| 374 | 1141 i = get_number(FALSE, NULL); |
| 7 | 1142 if (i < 1 || i > len) |
| 1143 goto theend; | |
| 1144 } | |
| 1145 /* get the swap file name that will be used */ | |
| 2267 | 1146 (void)recover_names(fname, FALSE, i, &fname_used); |
| 7 | 1147 } |
| 2267 | 1148 if (fname_used == NULL) |
| 7 | 1149 goto theend; /* out of memory */ |
| 1150 | |
| 1151 /* When called from main() still need to initialize storage structure */ | |
| 625 | 1152 if (called_from_main && ml_open(curbuf) == FAIL) |
| 7 | 1153 getout(1); |
| 1154 | |
| 2267 | 1155 /* |
| 1156 * Allocate a buffer structure for the swap file that is used for recovery. | |
|
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Fix memory access to 'cryptmethod' during recovery. (Dominique Pelle)
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parents:
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diff
changeset
|
1157 * Only the memline and crypt information in it are really used. |
| 2267 | 1158 */ |
| 7 | 1159 buf = (buf_T *)alloc((unsigned)sizeof(buf_T)); |
| 1160 if (buf == NULL) | |
| 1161 goto theend; | |
| 2267 | 1162 |
| 1163 /* | |
| 1164 * init fields in memline struct | |
| 1165 */ | |
| 7 | 1166 buf->b_ml.ml_stack_size = 0; /* no stack yet */ |
| 1167 buf->b_ml.ml_stack = NULL; /* no stack yet */ | |
| 1168 buf->b_ml.ml_stack_top = 0; /* nothing in the stack */ | |
| 1169 buf->b_ml.ml_line_lnum = 0; /* no cached line */ | |
| 1170 buf->b_ml.ml_locked = NULL; /* no locked block */ | |
| 1171 buf->b_ml.ml_flags = 0; | |
|
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diff
changeset
|
1172 #ifdef FEAT_CRYPT |
|
9e2e63af1641
Better fix for memory access in recovery. (Dominique Pelle)
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2407
diff
changeset
|
1173 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
|
1174 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
|
1175 #endif |
| 7 | 1176 |
| 2267 | 1177 /* |
| 1178 * open the memfile from the old swap file | |
| 1179 */ | |
| 1180 p = vim_strsave(fname_used); /* save "fname_used" for the message: | |
| 1181 mf_open() will consume "fname_used"! */ | |
| 1182 mfp = mf_open(fname_used, O_RDONLY); | |
| 1183 fname_used = p; | |
| 7 | 1184 if (mfp == NULL || mfp->mf_fd < 0) |
| 1185 { | |
| 2267 | 1186 if (fname_used != NULL) |
| 1187 EMSG2(_("E306: Cannot open %s"), fname_used); | |
| 7 | 1188 goto theend; |
| 1189 } | |
| 1190 buf->b_ml.ml_mfp = mfp; | |
| 2267 | 1191 #ifdef FEAT_CRYPT |
| 1192 mfp->mf_buffer = buf; | |
| 1193 #endif | |
| 7 | 1194 |
| 1195 /* | |
| 1196 * The page size set in mf_open() might be different from the page size | |
| 1197 * used in the swap file, we must get it from block 0. But to read block | |
| 1198 * 0 we need a page size. Use the minimal size for block 0 here, it will | |
| 1199 * be set to the real value below. | |
| 1200 */ | |
| 1201 mfp->mf_page_size = MIN_SWAP_PAGE_SIZE; | |
| 1202 | |
| 2267 | 1203 /* |
| 1204 * try to read block 0 | |
| 1205 */ | |
| 7 | 1206 if ((hp = mf_get(mfp, (blocknr_T)0, 1)) == NULL) |
| 1207 { | |
| 1208 msg_start(); | |
| 1209 MSG_PUTS_ATTR(_("Unable to read block 0 from "), attr | MSG_HIST); | |
| 1210 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST); | |
| 2267 | 1211 MSG_PUTS_ATTR(_("\nMaybe no changes were made or Vim did not update the swap file."), |
| 7 | 1212 attr | MSG_HIST); |
| 1213 msg_end(); | |
| 1214 goto theend; | |
| 1215 } | |
| 1216 b0p = (ZERO_BL *)(hp->bh_data); | |
| 1217 if (STRNCMP(b0p->b0_version, "VIM 3.0", 7) == 0) | |
| 1218 { | |
| 1219 msg_start(); | |
| 1220 msg_outtrans_attr(mfp->mf_fname, MSG_HIST); | |
| 1221 MSG_PUTS_ATTR(_(" cannot be used with this version of Vim.\n"), | |
| 1222 MSG_HIST); | |
| 1223 MSG_PUTS_ATTR(_("Use Vim version 3.0.\n"), MSG_HIST); | |
| 1224 msg_end(); | |
| 1225 goto theend; | |
| 1226 } | |
| 2267 | 1227 if (ml_check_b0_id(b0p) == FAIL) |
| 7 | 1228 { |
| 1229 EMSG2(_("E307: %s does not look like a Vim swap file"), mfp->mf_fname); | |
| 1230 goto theend; | |
| 1231 } | |
| 1232 if (b0_magic_wrong(b0p)) | |
| 1233 { | |
| 1234 msg_start(); | |
| 1235 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST); | |
| 1236 #if defined(MSDOS) || defined(MSWIN) | |
| 1237 if (STRNCMP(b0p->b0_hname, "PC ", 3) == 0) | |
| 1238 MSG_PUTS_ATTR(_(" cannot be used with this version of Vim.\n"), | |
| 1239 attr | MSG_HIST); | |
| 1240 else | |
| 1241 #endif | |
| 1242 MSG_PUTS_ATTR(_(" cannot be used on this computer.\n"), | |
| 1243 attr | MSG_HIST); | |
| 1244 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>
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diff
changeset
|
1245 /* avoid going past the end of a corrupted hostname */ |
| 7 | 1246 b0p->b0_fname[0] = NUL; |
| 1247 MSG_PUTS_ATTR(b0p->b0_hname, attr | MSG_HIST); | |
| 1248 MSG_PUTS_ATTR(_(",\nor the file has been damaged."), attr | MSG_HIST); | |
| 1249 msg_end(); | |
| 1250 goto theend; | |
| 1251 } | |
| 1105 | 1252 |
| 2267 | 1253 #ifdef FEAT_CRYPT |
| 1254 if (b0p->b0_id[1] == BLOCK0_ID1_C0) | |
|
2360
d8e4b27cef80
Change 'cryptmethod' from a number to a string option. Make it global-local.
Bram Moolenaar <bram@vim.org>
parents:
2283
diff
changeset
|
1255 b0_cm = 0; |
| 2267 | 1256 else if (b0p->b0_id[1] == BLOCK0_ID1_C1) |
| 1257 { | |
|
2360
d8e4b27cef80
Change 'cryptmethod' from a number to a string option. Make it global-local.
Bram Moolenaar <bram@vim.org>
parents:
2283
diff
changeset
|
1258 b0_cm = 1; |
| 2267 | 1259 mch_memmove(mfp->mf_seed, &b0p->b0_seed, MF_SEED_LEN); |
| 1260 } | |
|
2360
d8e4b27cef80
Change 'cryptmethod' from a number to a string option. Make it global-local.
Bram Moolenaar <bram@vim.org>
parents:
2283
diff
changeset
|
1261 set_crypt_method(buf, b0_cm); |
| 2267 | 1262 #else |
| 1263 if (b0p->b0_id[1] != BLOCK0_ID1) | |
| 1264 { | |
|
2283
7e1bd501306d
Mainly documentation updates.
Bram Moolenaar <bram@vim.org>
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2273
diff
changeset
|
1265 EMSG2(_("E833: %s is encrypted and this version of Vim does not support encryption"), mfp->mf_fname); |
| 2267 | 1266 goto theend; |
| 1267 } | |
| 1268 #endif | |
| 1269 | |
| 7 | 1270 /* |
| 1271 * If we guessed the wrong page size, we have to recalculate the | |
| 1272 * highest block number in the file. | |
| 1273 */ | |
| 1274 if (mfp->mf_page_size != (unsigned)char_to_long(b0p->b0_page_size)) | |
| 1275 { | |
| 1105 | 1276 unsigned previous_page_size = mfp->mf_page_size; |
| 1277 | |
| 7 | 1278 mf_new_page_size(mfp, (unsigned)char_to_long(b0p->b0_page_size)); |
| 1105 | 1279 if (mfp->mf_page_size < previous_page_size) |
| 1280 { | |
| 1281 msg_start(); | |
| 1282 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST); | |
| 1283 MSG_PUTS_ATTR(_(" has been damaged (page size is smaller than minimum value).\n"), | |
| 1284 attr | MSG_HIST); | |
| 1285 msg_end(); | |
| 1286 goto theend; | |
| 1287 } | |
| 7 | 1288 if ((size = lseek(mfp->mf_fd, (off_t)0L, SEEK_END)) <= 0) |
| 1289 mfp->mf_blocknr_max = 0; /* no file or empty file */ | |
| 1290 else | |
| 1291 mfp->mf_blocknr_max = (blocknr_T)(size / mfp->mf_page_size); | |
| 1292 mfp->mf_infile_count = mfp->mf_blocknr_max; | |
| 1105 | 1293 |
| 1294 /* need to reallocate the memory used to store the data */ | |
| 1295 p = alloc(mfp->mf_page_size); | |
| 1296 if (p == NULL) | |
| 1297 goto theend; | |
| 1298 mch_memmove(p, hp->bh_data, previous_page_size); | |
| 1299 vim_free(hp->bh_data); | |
| 1300 hp->bh_data = p; | |
| 1301 b0p = (ZERO_BL *)(hp->bh_data); | |
| 7 | 1302 } |
| 1303 | |
| 2267 | 1304 /* |
| 1305 * If .swp file name given directly, use name from swap file for buffer. | |
| 1306 */ | |
| 7 | 1307 if (directly) |
| 1308 { | |
| 1309 expand_env(b0p->b0_fname, NameBuff, MAXPATHL); | |
| 1310 if (setfname(curbuf, NameBuff, NULL, TRUE) == FAIL) | |
| 1311 goto theend; | |
| 1312 } | |
| 1313 | |
| 1314 home_replace(NULL, mfp->mf_fname, NameBuff, MAXPATHL, TRUE); | |
| 274 | 1315 smsg((char_u *)_("Using swap file \"%s\""), NameBuff); |
| 7 | 1316 |
| 1317 if (buf_spname(curbuf) != NULL) | |
| 1318 STRCPY(NameBuff, buf_spname(curbuf)); | |
| 1319 else | |
| 1320 home_replace(NULL, curbuf->b_ffname, NameBuff, MAXPATHL, TRUE); | |
| 274 | 1321 smsg((char_u *)_("Original file \"%s\""), NameBuff); |
| 7 | 1322 msg_putchar('\n'); |
| 1323 | |
| 2267 | 1324 /* |
| 1325 * check date of swap file and original file | |
| 1326 */ | |
| 7 | 1327 mtime = char_to_long(b0p->b0_mtime); |
| 1328 if (curbuf->b_ffname != NULL | |
| 1329 && mch_stat((char *)curbuf->b_ffname, &org_stat) != -1 | |
| 1330 && ((mch_stat((char *)mfp->mf_fname, &swp_stat) != -1 | |
| 1331 && org_stat.st_mtime > swp_stat.st_mtime) | |
| 1332 || org_stat.st_mtime != mtime)) | |
| 1333 { | |
| 1334 EMSG(_("E308: Warning: Original file may have been changed")); | |
| 1335 } | |
| 1336 out_flush(); | |
| 39 | 1337 |
| 1338 /* Get the 'fileformat' and 'fileencoding' from block zero. */ | |
| 1339 b0_ff = (b0p->b0_flags & B0_FF_MASK); | |
| 1340 if (b0p->b0_flags & B0_HAS_FENC) | |
| 1341 { | |
|
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2267
diff
changeset
|
1342 int fnsize = B0_FNAME_SIZE_NOCRYPT; |
| 2267 | 1343 |
| 1344 #ifdef FEAT_CRYPT | |
| 1345 /* Use the same size as in add_b0_fenc(). */ | |
| 1346 if (b0p->b0_id[1] != BLOCK0_ID1) | |
|
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2267
diff
changeset
|
1347 fnsize = B0_FNAME_SIZE_CRYPT; |
| 2267 | 1348 #endif |
|
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2267
diff
changeset
|
1349 for (p = b0p->b0_fname + fnsize; p > b0p->b0_fname && p[-1] != NUL; --p) |
| 39 | 1350 ; |
|
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2267
diff
changeset
|
1351 b0_fenc = vim_strnsave(p, (int)(b0p->b0_fname + fnsize - p)); |
| 39 | 1352 } |
| 1353 | |
| 7 | 1354 mf_put(mfp, hp, FALSE, FALSE); /* release block 0 */ |
| 1355 hp = NULL; | |
| 1356 | |
| 1357 /* | |
| 1358 * Now that we are sure that the file is going to be recovered, clear the | |
| 1359 * contents of the current buffer. | |
| 1360 */ | |
| 1361 while (!(curbuf->b_ml.ml_flags & ML_EMPTY)) | |
| 1362 ml_delete((linenr_T)1, FALSE); | |
| 1363 | |
| 1364 /* | |
| 1365 * Try reading the original file to obtain the values of 'fileformat', | |
| 1366 * 'fileencoding', etc. Ignore errors. The text itself is not used. | |
| 2267 | 1367 * When the file is encrypted the user is asked to enter the key. |
| 7 | 1368 */ |
| 1369 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
|
1370 orig_file_status = readfile(curbuf->b_ffname, NULL, (linenr_T)0, |
| 7 | 1371 (linenr_T)0, (linenr_T)MAXLNUM, NULL, READ_NEW); |
| 1372 | |
| 2267 | 1373 #ifdef FEAT_CRYPT |
| 1374 if (b0_cm >= 0) | |
| 1375 { | |
| 1376 /* Need to ask the user for the crypt key. If this fails we continue | |
| 1377 * without a key, will probably get garbage text. */ | |
| 1378 if (*curbuf->b_p_key != NUL) | |
| 1379 { | |
| 1380 smsg((char_u *)_("Swap file is encrypted: \"%s\""), fname_used); | |
| 1381 MSG_PUTS(_("\nIf you entered a new crypt key but did not write the text file,")); | |
| 1382 MSG_PUTS(_("\nenter the new crypt key.")); | |
| 1383 MSG_PUTS(_("\nIf you wrote the text file after changing the crypt key press enter")); | |
| 1384 MSG_PUTS(_("\nto use the same key for text file and swap file")); | |
| 1385 } | |
| 1386 else | |
| 1387 smsg((char_u *)_(need_key_msg), fname_used); | |
| 1388 buf->b_p_key = get_crypt_key(FALSE, FALSE); | |
| 1389 if (buf->b_p_key == NULL) | |
| 1390 buf->b_p_key = curbuf->b_p_key; | |
| 1391 else if (*buf->b_p_key == NUL) | |
| 1392 { | |
| 1393 vim_free(buf->b_p_key); | |
| 1394 buf->b_p_key = curbuf->b_p_key; | |
| 1395 } | |
| 1396 if (buf->b_p_key == NULL) | |
| 1397 buf->b_p_key = empty_option; | |
|
2165
733f0dc510c3
Undo changes that are meant for the Vim 7.3 branch.
Bram Moolenaar <bram@vim.org>
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2162
diff
changeset
|
1398 } |
| 2267 | 1399 #endif |
| 7 | 1400 |
| 39 | 1401 /* Use the 'fileformat' and 'fileencoding' as stored in the swap file. */ |
| 1402 if (b0_ff != 0) | |
| 1403 set_fileformat(b0_ff - 1, OPT_LOCAL); | |
| 1404 if (b0_fenc != NULL) | |
| 1405 { | |
| 1406 set_option_value((char_u *)"fenc", 0L, b0_fenc, OPT_LOCAL); | |
| 1407 vim_free(b0_fenc); | |
| 1408 } | |
| 1409 unchanged(curbuf, TRUE); | |
| 1410 | |
| 7 | 1411 bnum = 1; /* start with block 1 */ |
| 1412 page_count = 1; /* which is 1 page */ | |
| 1413 lnum = 0; /* append after line 0 in curbuf */ | |
| 1414 line_count = 0; | |
| 1415 idx = 0; /* start with first index in block 1 */ | |
| 1416 error = 0; | |
| 1417 buf->b_ml.ml_stack_top = 0; | |
| 1418 buf->b_ml.ml_stack = NULL; | |
| 1419 buf->b_ml.ml_stack_size = 0; /* no stack yet */ | |
| 1420 | |
| 1421 if (curbuf->b_ffname == NULL) | |
| 1422 cannot_open = TRUE; | |
| 1423 else | |
| 1424 cannot_open = FALSE; | |
| 1425 | |
| 1426 serious_error = FALSE; | |
| 1427 for ( ; !got_int; line_breakcheck()) | |
| 1428 { | |
| 1429 if (hp != NULL) | |
| 1430 mf_put(mfp, hp, FALSE, FALSE); /* release previous block */ | |
| 1431 | |
| 1432 /* | |
| 1433 * get block | |
| 1434 */ | |
| 1435 if ((hp = mf_get(mfp, (blocknr_T)bnum, page_count)) == NULL) | |
| 1436 { | |
| 1437 if (bnum == 1) | |
| 1438 { | |
| 1439 EMSG2(_("E309: Unable to read block 1 from %s"), mfp->mf_fname); | |
| 1440 goto theend; | |
| 1441 } | |
| 1442 ++error; | |
| 1443 ml_append(lnum++, (char_u *)_("???MANY LINES MISSING"), | |
| 1444 (colnr_T)0, TRUE); | |
| 1445 } | |
| 1446 else /* there is a block */ | |
| 1447 { | |
| 1448 pp = (PTR_BL *)(hp->bh_data); | |
| 1449 if (pp->pb_id == PTR_ID) /* it is a pointer block */ | |
| 1450 { | |
| 1451 /* check line count when using pointer block first time */ | |
| 1452 if (idx == 0 && line_count != 0) | |
| 1453 { | |
| 1454 for (i = 0; i < (int)pp->pb_count; ++i) | |
| 1455 line_count -= pp->pb_pointer[i].pe_line_count; | |
| 1456 if (line_count != 0) | |
| 1457 { | |
| 1458 ++error; | |
| 1459 ml_append(lnum++, (char_u *)_("???LINE COUNT WRONG"), | |
| 1460 (colnr_T)0, TRUE); | |
| 1461 } | |
| 1462 } | |
| 1463 | |
| 1464 if (pp->pb_count == 0) | |
| 1465 { | |
| 1466 ml_append(lnum++, (char_u *)_("???EMPTY BLOCK"), | |
| 1467 (colnr_T)0, TRUE); | |
| 1468 ++error; | |
| 1469 } | |
| 1470 else if (idx < (int)pp->pb_count) /* go a block deeper */ | |
| 1471 { | |
| 1472 if (pp->pb_pointer[idx].pe_bnum < 0) | |
| 1473 { | |
| 1474 /* | |
| 1475 * Data block with negative block number. | |
| 1476 * Try to read lines from the original file. | |
| 1477 * This is slow, but it works. | |
| 1478 */ | |
| 1479 if (!cannot_open) | |
| 1480 { | |
| 1481 line_count = pp->pb_pointer[idx].pe_line_count; | |
| 1482 if (readfile(curbuf->b_ffname, NULL, lnum, | |
| 1483 pp->pb_pointer[idx].pe_old_lnum - 1, | |
| 1484 line_count, NULL, 0) == FAIL) | |
| 1485 cannot_open = TRUE; | |
| 1486 else | |
| 1487 lnum += line_count; | |
| 1488 } | |
| 1489 if (cannot_open) | |
| 1490 { | |
| 1491 ++error; | |
| 1492 ml_append(lnum++, (char_u *)_("???LINES MISSING"), | |
| 1493 (colnr_T)0, TRUE); | |
| 1494 } | |
| 1495 ++idx; /* get same block again for next index */ | |
| 1496 continue; | |
| 1497 } | |
| 1498 | |
| 1499 /* | |
| 1500 * going one block deeper in the tree | |
| 1501 */ | |
| 1502 if ((top = ml_add_stack(buf)) < 0) /* new entry in stack */ | |
| 1503 { | |
| 1504 ++error; | |
| 1505 break; /* out of memory */ | |
| 1506 } | |
| 1507 ip = &(buf->b_ml.ml_stack[top]); | |
| 1508 ip->ip_bnum = bnum; | |
| 1509 ip->ip_index = idx; | |
| 1510 | |
| 1511 bnum = pp->pb_pointer[idx].pe_bnum; | |
| 1512 line_count = pp->pb_pointer[idx].pe_line_count; | |
| 1513 page_count = pp->pb_pointer[idx].pe_page_count; | |
| 2885 | 1514 idx = 0; |
| 7 | 1515 continue; |
| 1516 } | |
| 1517 } | |
| 1518 else /* not a pointer block */ | |
| 1519 { | |
| 1520 dp = (DATA_BL *)(hp->bh_data); | |
| 1521 if (dp->db_id != DATA_ID) /* block id wrong */ | |
| 1522 { | |
| 1523 if (bnum == 1) | |
| 1524 { | |
| 1525 EMSG2(_("E310: Block 1 ID wrong (%s not a .swp file?)"), | |
| 1526 mfp->mf_fname); | |
| 1527 goto theend; | |
| 1528 } | |
| 1529 ++error; | |
| 1530 ml_append(lnum++, (char_u *)_("???BLOCK MISSING"), | |
| 1531 (colnr_T)0, TRUE); | |
| 1532 } | |
| 1533 else | |
| 1534 { | |
| 1535 /* | |
| 1536 * it is a data block | |
| 1537 * Append all the lines in this block | |
| 1538 */ | |
| 1539 has_error = FALSE; | |
| 1540 /* | |
| 1541 * check length of block | |
| 1542 * if wrong, use length in pointer block | |
| 1543 */ | |
| 1544 if (page_count * mfp->mf_page_size != dp->db_txt_end) | |
| 1545 { | |
| 1546 ml_append(lnum++, (char_u *)_("??? from here until ???END lines may be messed up"), | |
| 1547 (colnr_T)0, TRUE); | |
| 1548 ++error; | |
| 1549 has_error = TRUE; | |
| 1550 dp->db_txt_end = page_count * mfp->mf_page_size; | |
| 1551 } | |
| 1552 | |
| 1553 /* make sure there is a NUL at the end of the block */ | |
| 1554 *((char_u *)dp + dp->db_txt_end - 1) = NUL; | |
| 1555 | |
| 1556 /* | |
| 1557 * check number of lines in block | |
| 1558 * if wrong, use count in data block | |
| 1559 */ | |
| 1560 if (line_count != dp->db_line_count) | |
| 1561 { | |
| 1562 ml_append(lnum++, (char_u *)_("??? from here until ???END lines may have been inserted/deleted"), | |
| 1563 (colnr_T)0, TRUE); | |
| 1564 ++error; | |
| 1565 has_error = TRUE; | |
| 1566 } | |
| 1567 | |
| 1568 for (i = 0; i < dp->db_line_count; ++i) | |
| 1569 { | |
| 1570 txt_start = (dp->db_index[i] & DB_INDEX_MASK); | |
| 1978 | 1571 if (txt_start <= (int)HEADER_SIZE |
| 7 | 1572 || txt_start >= (int)dp->db_txt_end) |
| 1573 { | |
| 1574 p = (char_u *)"???"; | |
| 1575 ++error; | |
| 1576 } | |
| 1577 else | |
| 1578 p = (char_u *)dp + txt_start; | |
| 1579 ml_append(lnum++, p, (colnr_T)0, TRUE); | |
| 1580 } | |
| 1581 if (has_error) | |
| 1978 | 1582 ml_append(lnum++, (char_u *)_("???END"), |
| 1583 (colnr_T)0, TRUE); | |
| 7 | 1584 } |
| 1585 } | |
| 1586 } | |
| 1587 | |
| 1588 if (buf->b_ml.ml_stack_top == 0) /* finished */ | |
| 1589 break; | |
| 1590 | |
| 1591 /* | |
| 1592 * go one block up in the tree | |
| 1593 */ | |
| 1594 ip = &(buf->b_ml.ml_stack[--(buf->b_ml.ml_stack_top)]); | |
| 1595 bnum = ip->ip_bnum; | |
| 1596 idx = ip->ip_index + 1; /* go to next index */ | |
| 1597 page_count = 1; | |
| 1598 } | |
| 1599 | |
| 1600 /* | |
|
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
|
1601 * 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
|
1602 * set the 'modified' flag. |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1603 * Lines 1 - lnum are the new contents. |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1604 * Lines lnum + 1 to ml_line_count are the original contents. |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1605 * Line ml_line_count + 1 in the dummy empty line. |
| 7 | 1606 */ |
|
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
|
1607 if (orig_file_status != OK || curbuf->b_ml.ml_line_count != lnum * 2 + 1) |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1608 { |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1609 /* Recovering an empty file results in two lines and the first line is |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1610 * empty. Don't set the modified flag then. */ |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1611 if (!(curbuf->b_ml.ml_line_count == 2 && *ml_get(1) == NUL)) |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1612 { |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1613 changed_int(); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1614 ++curbuf->b_changedtick; |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1615 } |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1616 } |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1617 else |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1618 { |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1619 for (idx = 1; idx <= lnum; ++idx) |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1620 { |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1621 /* Need to copy one line, fetching the other one may flush it. */ |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1622 p = vim_strsave(ml_get(idx)); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1623 i = STRCMP(p, ml_get(idx + lnum)); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1624 vim_free(p); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1625 if (i != 0) |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1626 { |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1627 changed_int(); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1628 ++curbuf->b_changedtick; |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1629 break; |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1630 } |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1631 } |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1632 } |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1633 |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1634 /* |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1635 * Delete the lines from the original file and the dummy line from the |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1636 * empty buffer. These will now be after the last line in the buffer. |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1637 */ |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1638 while (curbuf->b_ml.ml_line_count > lnum |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1639 && !(curbuf->b_ml.ml_flags & ML_EMPTY)) |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1640 ml_delete(curbuf->b_ml.ml_line_count, FALSE); |
| 7 | 1641 curbuf->b_flags |= BF_RECOVERED; |
| 1642 | |
| 1643 recoverymode = FALSE; | |
| 1644 if (got_int) | |
| 1645 EMSG(_("E311: Recovery Interrupted")); | |
| 1646 else if (error) | |
| 1647 { | |
| 1648 ++no_wait_return; | |
| 1649 MSG(">>>>>>>>>>>>>"); | |
| 1650 EMSG(_("E312: Errors detected while recovering; look for lines starting with ???")); | |
| 1651 --no_wait_return; | |
| 1652 MSG(_("See \":help E312\" for more information.")); | |
| 1653 MSG(">>>>>>>>>>>>>"); | |
| 1654 } | |
| 1655 else | |
| 1656 { | |
|
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
|
1657 if (curbuf->b_changed) |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1658 { |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1659 MSG(_("Recovery completed. You should check if everything is OK.")); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1660 MSG_PUTS(_("\n(You might want to write out this file under another name\n")); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1661 MSG_PUTS(_("and run diff with the original file to check for changes)")); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1662 } |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1663 else |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1664 MSG(_("Recovery completed. Buffer contents equals file contents.")); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1665 MSG_PUTS(_("\nYou may want to delete the .swp file now.\n\n")); |
| 7 | 1666 cmdline_row = msg_row; |
| 1667 } | |
| 2267 | 1668 #ifdef FEAT_CRYPT |
| 1669 if (*buf->b_p_key != NUL && STRCMP(curbuf->b_p_key, buf->b_p_key) != 0) | |
| 1670 { | |
| 1671 MSG_PUTS(_("Using crypt key from swap file for the text file.\n")); | |
| 1672 set_option_value((char_u *)"key", 0L, buf->b_p_key, OPT_LOCAL); | |
| 1673 } | |
| 1674 #endif | |
| 7 | 1675 redraw_curbuf_later(NOT_VALID); |
| 1676 | |
| 1677 theend: | |
| 2267 | 1678 vim_free(fname_used); |
| 7 | 1679 recoverymode = FALSE; |
| 1680 if (mfp != NULL) | |
| 1681 { | |
| 1682 if (hp != NULL) | |
| 1683 mf_put(mfp, hp, FALSE, FALSE); | |
| 1684 mf_close(mfp, FALSE); /* will also vim_free(mfp->mf_fname) */ | |
| 1685 } | |
| 1053 | 1686 if (buf != NULL) |
| 1687 { | |
| 2267 | 1688 #ifdef FEAT_CRYPT |
| 1689 if (buf->b_p_key != curbuf->b_p_key) | |
| 1690 free_string_option(buf->b_p_key); | |
|
2407
6bc102a4bff8
Fix memory access to 'cryptmethod' during recovery. (Dominique Pelle)
Bram Moolenaar <bram@vim.org>
parents:
2394
diff
changeset
|
1691 free_string_option(buf->b_p_cm); |
| 2267 | 1692 #endif |
| 1053 | 1693 vim_free(buf->b_ml.ml_stack); |
| 1694 vim_free(buf); | |
| 1695 } | |
| 7 | 1696 if (serious_error && called_from_main) |
| 1697 ml_close(curbuf, TRUE); | |
| 1698 #ifdef FEAT_AUTOCMD | |
| 1699 else | |
| 1700 { | |
| 1701 apply_autocmds(EVENT_BUFREADPOST, NULL, curbuf->b_fname, FALSE, curbuf); | |
| 1702 apply_autocmds(EVENT_BUFWINENTER, NULL, curbuf->b_fname, FALSE, curbuf); | |
| 1703 } | |
| 1704 #endif | |
| 1705 return; | |
| 1706 } | |
| 1707 | |
| 1708 /* | |
| 1709 * Find the names of swap files in current directory and the directory given | |
| 1710 * with the 'directory' option. | |
| 1711 * | |
| 1712 * Used to: | |
| 1713 * - list the swap files for "vim -r" | |
| 1714 * - count the number of swap files when recovering | |
| 1715 * - list the swap files when recovering | |
| 1716 * - find the name of the n'th swap file when recovering | |
| 1717 */ | |
| 1718 int | |
| 2267 | 1719 recover_names(fname, list, nr, fname_out) |
| 1720 char_u *fname; /* base for swap file name */ | |
| 1721 int list; /* when TRUE, list the swap file names */ | |
| 1722 int nr; /* when non-zero, return nr'th swap file name */ | |
| 1723 char_u **fname_out; /* result when "nr" > 0 */ | |
| 7 | 1724 { |
| 1725 int num_names; | |
| 1726 char_u *(names[6]); | |
| 1727 char_u *tail; | |
| 1728 char_u *p; | |
| 1729 int num_files; | |
| 1730 int file_count = 0; | |
| 1731 char_u **files; | |
| 1732 int i; | |
| 1733 char_u *dirp; | |
| 1734 char_u *dir_name; | |
| 2175 | 1735 char_u *fname_res = NULL; |
|
2145
de0e7ca61893
updated for version 7.2.427
Bram Moolenaar <bram@zimbu.org>
parents:
2108
diff
changeset
|
1736 #ifdef HAVE_READLINK |
|
de0e7ca61893
updated for version 7.2.427
Bram Moolenaar <bram@zimbu.org>
parents:
2108
diff
changeset
|
1737 char_u fname_buf[MAXPATHL]; |
| 2175 | 1738 #endif |
| 1739 | |
| 1740 if (fname != NULL) | |
| 1741 { | |
| 1742 #ifdef HAVE_READLINK | |
| 2267 | 1743 /* Expand symlink in the file name, because the swap file is created |
| 1744 * with the actual file instead of with the symlink. */ | |
| 1745 if (resolve_symlink(fname, fname_buf) == OK) | |
| 1746 fname_res = fname_buf; | |
| 1747 else | |
|
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1748 #endif |
| 2267 | 1749 fname_res = fname; |
| 2175 | 1750 } |
| 7 | 1751 |
| 1752 if (list) | |
| 1753 { | |
|
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1754 /* use msg() to start the scrolling properly */ |
| 7 | 1755 msg((char_u *)_("Swap files found:")); |
| 1756 msg_putchar('\n'); | |
| 1757 } | |
| 1758 | |
| 1759 /* | |
| 1760 * Do the loop for every directory in 'directory'. | |
| 1761 * First allocate some memory to put the directory name in. | |
| 1762 */ | |
| 1763 dir_name = alloc((unsigned)STRLEN(p_dir) + 1); | |
| 1764 dirp = p_dir; | |
| 1765 while (dir_name != NULL && *dirp) | |
| 1766 { | |
| 1767 /* | |
| 1768 * Isolate a directory name from *dirp and put it in dir_name (we know | |
| 1769 * it is large enough, so use 31000 for length). | |
| 1770 * Advance dirp to next directory name. | |
| 1771 */ | |
| 1772 (void)copy_option_part(&dirp, dir_name, 31000, ","); | |
| 1773 | |
| 1774 if (dir_name[0] == '.' && dir_name[1] == NUL) /* check current dir */ | |
| 1775 { | |
| 2267 | 1776 if (fname == NULL) |
| 7 | 1777 { |
| 1778 #ifdef VMS | |
| 1779 names[0] = vim_strsave((char_u *)"*_sw%"); | |
| 1780 #else | |
| 1781 names[0] = vim_strsave((char_u *)"*.sw?"); | |
| 1782 #endif | |
| 1005 | 1783 #if defined(UNIX) || defined(WIN3264) |
| 1784 /* For Unix names starting with a dot are special. MS-Windows | |
| 1785 * supports this too, on some file systems. */ | |
| 7 | 1786 names[1] = vim_strsave((char_u *)".*.sw?"); |
| 1787 names[2] = vim_strsave((char_u *)".sw?"); | |
| 1788 num_names = 3; | |
| 1789 #else | |
| 1790 # ifdef VMS | |
| 1791 names[1] = vim_strsave((char_u *)".*_sw%"); | |
| 1792 num_names = 2; | |
| 1793 # else | |
| 1794 num_names = 1; | |
| 1795 # endif | |
| 1796 #endif | |
| 1797 } | |
| 1798 else | |
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1799 num_names = recov_file_names(names, fname_res, TRUE); |
| 7 | 1800 } |
| 1801 else /* check directory dir_name */ | |
| 1802 { | |
| 2267 | 1803 if (fname == NULL) |
| 7 | 1804 { |
| 1805 #ifdef VMS | |
| 1806 names[0] = concat_fnames(dir_name, (char_u *)"*_sw%", TRUE); | |
| 1807 #else | |
| 1808 names[0] = concat_fnames(dir_name, (char_u *)"*.sw?", TRUE); | |
| 1809 #endif | |
| 1005 | 1810 #if defined(UNIX) || defined(WIN3264) |
| 1811 /* For Unix names starting with a dot are special. MS-Windows | |
| 1812 * supports this too, on some file systems. */ | |
| 7 | 1813 names[1] = concat_fnames(dir_name, (char_u *)".*.sw?", TRUE); |
| 1814 names[2] = concat_fnames(dir_name, (char_u *)".sw?", TRUE); | |
| 1815 num_names = 3; | |
| 1816 #else | |
| 1817 # ifdef VMS | |
| 1818 names[1] = concat_fnames(dir_name, (char_u *)".*_sw%", TRUE); | |
| 1819 num_names = 2; | |
| 1820 # else | |
| 1821 num_names = 1; | |
| 1822 # endif | |
| 1823 #endif | |
| 1824 } | |
| 1825 else | |
| 1826 { | |
| 1827 #if defined(UNIX) || defined(WIN3264) | |
| 1828 p = dir_name + STRLEN(dir_name); | |
| 39 | 1829 if (after_pathsep(dir_name, p) && p[-1] == p[-2]) |
| 7 | 1830 { |
| 1831 /* Ends with '//', Use Full path for swap name */ | |
|
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1832 tail = make_percent_swname(dir_name, fname_res); |
| 7 | 1833 } |
| 1834 else | |
| 1835 #endif | |
| 1836 { | |
|
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1837 tail = gettail(fname_res); |
| 7 | 1838 tail = concat_fnames(dir_name, tail, TRUE); |
| 1839 } | |
| 1840 if (tail == NULL) | |
| 1841 num_names = 0; | |
| 1842 else | |
| 1843 { | |
| 1844 num_names = recov_file_names(names, tail, FALSE); | |
| 1845 vim_free(tail); | |
| 1846 } | |
| 1847 } | |
| 1848 } | |
| 1849 | |
| 1850 /* check for out-of-memory */ | |
| 1851 for (i = 0; i < num_names; ++i) | |
| 1852 { | |
| 1853 if (names[i] == NULL) | |
| 1854 { | |
| 1855 for (i = 0; i < num_names; ++i) | |
| 1856 vim_free(names[i]); | |
| 1857 num_names = 0; | |
| 1858 } | |
| 1859 } | |
| 1860 if (num_names == 0) | |
| 1861 num_files = 0; | |
| 1862 else if (expand_wildcards(num_names, names, &num_files, &files, | |
| 1863 EW_KEEPALL|EW_FILE|EW_SILENT) == FAIL) | |
| 1864 num_files = 0; | |
| 1865 | |
| 1866 /* | |
| 1867 * When no swap file found, wildcard expansion might have failed (e.g. | |
| 1868 * not able to execute the shell). | |
| 1869 * Try finding a swap file by simply adding ".swp" to the file name. | |
| 1870 */ | |
| 2267 | 1871 if (*dirp == NUL && file_count + num_files == 0 && fname != NULL) |
| 7 | 1872 { |
| 1873 struct stat st; | |
| 1874 char_u *swapname; | |
| 1875 | |
|
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1876 swapname = modname(fname_res, |
| 2823 | 1877 #if defined(VMS) |
|
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1878 (char_u *)"_swp", FALSE |
| 7 | 1879 #else |
|
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1880 (char_u *)".swp", TRUE |
| 7 | 1881 #endif |
|
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1882 ); |
| 7 | 1883 if (swapname != NULL) |
| 1884 { | |
| 1885 if (mch_stat((char *)swapname, &st) != -1) /* It exists! */ | |
| 1886 { | |
| 1887 files = (char_u **)alloc((unsigned)sizeof(char_u *)); | |
| 1888 if (files != NULL) | |
| 1889 { | |
| 1890 files[0] = swapname; | |
| 1891 swapname = NULL; | |
| 1892 num_files = 1; | |
| 1893 } | |
| 1894 } | |
| 1895 vim_free(swapname); | |
| 1896 } | |
| 1897 } | |
| 1898 | |
| 1899 /* | |
| 1900 * remove swapfile name of the current buffer, it must be ignored | |
| 1901 */ | |
| 1902 if (curbuf->b_ml.ml_mfp != NULL | |
| 1903 && (p = curbuf->b_ml.ml_mfp->mf_fname) != NULL) | |
| 1904 { | |
| 1905 for (i = 0; i < num_files; ++i) | |
| 1906 if (fullpathcmp(p, files[i], TRUE) & FPC_SAME) | |
| 1907 { | |
| 1855 | 1908 /* Remove the name from files[i]. Move further entries |
| 1909 * down. When the array becomes empty free it here, since | |
| 1910 * FreeWild() won't be called below. */ | |
| 7 | 1911 vim_free(files[i]); |
| 1855 | 1912 if (--num_files == 0) |
| 1913 vim_free(files); | |
| 1914 else | |
| 1915 for ( ; i < num_files; ++i) | |
| 1916 files[i] = files[i + 1]; | |
| 7 | 1917 } |
| 1918 } | |
| 838 | 1919 if (nr > 0) |
| 7 | 1920 { |
| 1921 file_count += num_files; | |
| 1922 if (nr <= file_count) | |
| 1923 { | |
| 2267 | 1924 *fname_out = vim_strsave( |
| 1925 files[nr - 1 + num_files - file_count]); | |
| 7 | 1926 dirp = (char_u *)""; /* stop searching */ |
| 1927 } | |
| 1928 } | |
| 1929 else if (list) | |
| 1930 { | |
| 1931 if (dir_name[0] == '.' && dir_name[1] == NUL) | |
| 1932 { | |
| 2267 | 1933 if (fname == NULL) |
| 7 | 1934 MSG_PUTS(_(" In current directory:\n")); |
| 1935 else | |
| 1936 MSG_PUTS(_(" Using specified name:\n")); | |
| 1937 } | |
| 1938 else | |
| 1939 { | |
| 1940 MSG_PUTS(_(" In directory ")); | |
| 1941 msg_home_replace(dir_name); | |
| 1942 MSG_PUTS(":\n"); | |
| 1943 } | |
| 1944 | |
| 1945 if (num_files) | |
| 1946 { | |
| 1947 for (i = 0; i < num_files; ++i) | |
| 1948 { | |
| 1949 /* print the swap file name */ | |
| 1950 msg_outnum((long)++file_count); | |
| 1951 MSG_PUTS(". "); | |
| 1952 msg_puts(gettail(files[i])); | |
| 1953 msg_putchar('\n'); | |
| 1954 (void)swapfile_info(files[i]); | |
| 1955 } | |
| 1956 } | |
| 1957 else | |
| 1958 MSG_PUTS(_(" -- none --\n")); | |
| 1959 out_flush(); | |
| 1960 } | |
| 1961 else | |
| 1962 file_count += num_files; | |
| 1963 | |
| 1964 for (i = 0; i < num_names; ++i) | |
| 1965 vim_free(names[i]); | |
| 838 | 1966 if (num_files > 0) |
| 1967 FreeWild(num_files, files); | |
| 7 | 1968 } |
| 1969 vim_free(dir_name); | |
| 1970 return file_count; | |
| 1971 } | |
| 1972 | |
| 1973 #if defined(UNIX) || defined(WIN3264) /* Need _very_ long file names */ | |
| 1974 /* | |
| 1975 * Append the full path to name with path separators made into percent | |
| 1976 * signs, to dir. An unnamed buffer is handled as "" (<currentdir>/"") | |
| 1977 */ | |
| 1978 static char_u * | |
| 1979 make_percent_swname(dir, name) | |
| 1980 char_u *dir; | |
| 1981 char_u *name; | |
| 1982 { | |
| 39 | 1983 char_u *d, *s, *f; |
| 7 | 1984 |
| 1985 f = fix_fname(name != NULL ? name : (char_u *) ""); | |
| 1986 d = NULL; | |
| 1987 if (f != NULL) | |
| 1988 { | |
| 1989 s = alloc((unsigned)(STRLEN(f) + 1)); | |
| 1990 if (s != NULL) | |
| 1991 { | |
| 39 | 1992 STRCPY(s, f); |
| 1993 for (d = s; *d != NUL; mb_ptr_adv(d)) | |
| 1994 if (vim_ispathsep(*d)) | |
| 1995 *d = '%'; | |
| 7 | 1996 d = concat_fnames(dir, s, TRUE); |
| 1997 vim_free(s); | |
| 1998 } | |
| 1999 vim_free(f); | |
| 2000 } | |
| 2001 return d; | |
| 2002 } | |
| 2003 #endif | |
| 2004 | |
| 2005 #if (defined(UNIX) || defined(__EMX__) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)) | |
| 2006 static int process_still_running; | |
| 2007 #endif | |
| 2008 | |
| 2009 /* | |
| 580 | 2010 * Give information about an existing swap file. |
| 7 | 2011 * Returns timestamp (0 when unknown). |
| 2012 */ | |
| 2013 static time_t | |
| 2014 swapfile_info(fname) | |
| 2015 char_u *fname; | |
| 2016 { | |
| 2017 struct stat st; | |
| 2018 int fd; | |
| 2019 struct block0 b0; | |
| 2020 time_t x = (time_t)0; | |
| 1001 | 2021 char *p; |
| 7 | 2022 #ifdef UNIX |
| 2023 char_u uname[B0_UNAME_SIZE]; | |
| 2024 #endif | |
| 2025 | |
| 2026 /* print the swap file date */ | |
| 2027 if (mch_stat((char *)fname, &st) != -1) | |
| 2028 { | |
| 2029 #ifdef UNIX | |
| 2030 /* print name of owner of the file */ | |
| 2031 if (mch_get_uname(st.st_uid, uname, B0_UNAME_SIZE) == OK) | |
| 2032 { | |
| 2033 MSG_PUTS(_(" owned by: ")); | |
| 2034 msg_outtrans(uname); | |
| 2035 MSG_PUTS(_(" dated: ")); | |
| 2036 } | |
| 2037 else | |
| 2038 #endif | |
| 2039 MSG_PUTS(_(" dated: ")); | |
| 2040 x = st.st_mtime; /* Manx C can't do &st.st_mtime */ | |
| 1001 | 2041 p = ctime(&x); /* includes '\n' */ |
| 2042 if (p == NULL) | |
| 2043 MSG_PUTS("(invalid)\n"); | |
| 2044 else | |
| 2045 MSG_PUTS(p); | |
| 7 | 2046 } |
| 2047 | |
| 2048 /* | |
| 2049 * print the original file name | |
| 2050 */ | |
| 2051 fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
| 2052 if (fd >= 0) | |
| 2053 { | |
| 2664 | 2054 if (read_eintr(fd, &b0, sizeof(b0)) == sizeof(b0)) |
| 7 | 2055 { |
| 2056 if (STRNCMP(b0.b0_version, "VIM 3.0", 7) == 0) | |
| 2057 { | |
| 2058 MSG_PUTS(_(" [from Vim version 3.0]")); | |
| 2059 } | |
| 2267 | 2060 else if (ml_check_b0_id(&b0) == FAIL) |
| 7 | 2061 { |
| 2062 MSG_PUTS(_(" [does not look like a Vim swap file]")); | |
| 2063 } | |
| 2064 else | |
| 2065 { | |
| 2066 MSG_PUTS(_(" file name: ")); | |
| 2067 if (b0.b0_fname[0] == NUL) | |
| 9 | 2068 MSG_PUTS(_("[No Name]")); |
| 7 | 2069 else |
| 2070 msg_outtrans(b0.b0_fname); | |
| 2071 | |
| 2072 MSG_PUTS(_("\n modified: ")); | |
| 2073 MSG_PUTS(b0.b0_dirty ? _("YES") : _("no")); | |
| 2074 | |
| 2075 if (*(b0.b0_uname) != NUL) | |
| 2076 { | |
| 2077 MSG_PUTS(_("\n user name: ")); | |
| 2078 msg_outtrans(b0.b0_uname); | |
| 2079 } | |
| 2080 | |
| 2081 if (*(b0.b0_hname) != NUL) | |
| 2082 { | |
| 2083 if (*(b0.b0_uname) != NUL) | |
| 2084 MSG_PUTS(_(" host name: ")); | |
| 2085 else | |
| 2086 MSG_PUTS(_("\n host name: ")); | |
| 2087 msg_outtrans(b0.b0_hname); | |
| 2088 } | |
| 2089 | |
| 2090 if (char_to_long(b0.b0_pid) != 0L) | |
| 2091 { | |
| 2092 MSG_PUTS(_("\n process ID: ")); | |
| 2093 msg_outnum(char_to_long(b0.b0_pid)); | |
| 2094 #if defined(UNIX) || defined(__EMX__) | |
| 2095 /* EMX kill() not working correctly, it seems */ | |
| 2096 if (kill((pid_t)char_to_long(b0.b0_pid), 0) == 0) | |
| 2097 { | |
| 2098 MSG_PUTS(_(" (still running)")); | |
| 2099 # if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) | |
| 2100 process_still_running = TRUE; | |
| 2101 # endif | |
| 2102 } | |
| 2103 #endif | |
| 2104 } | |
| 2105 | |
| 2106 if (b0_magic_wrong(&b0)) | |
| 2107 { | |
| 2108 #if defined(MSDOS) || defined(MSWIN) | |
| 2109 if (STRNCMP(b0.b0_hname, "PC ", 3) == 0) | |
| 2110 MSG_PUTS(_("\n [not usable with this version of Vim]")); | |
| 2111 else | |
| 2112 #endif | |
| 2113 MSG_PUTS(_("\n [not usable on this computer]")); | |
| 2114 } | |
| 2115 } | |
| 2116 } | |
| 2117 else | |
| 2118 MSG_PUTS(_(" [cannot be read]")); | |
| 2119 close(fd); | |
| 2120 } | |
| 2121 else | |
| 2122 MSG_PUTS(_(" [cannot be opened]")); | |
| 2123 msg_putchar('\n'); | |
| 2124 | |
| 2125 return x; | |
| 2126 } | |
| 2127 | |
| 2128 static int | |
| 2129 recov_file_names(names, path, prepend_dot) | |
| 2130 char_u **names; | |
| 2131 char_u *path; | |
| 2132 int prepend_dot; | |
| 2133 { | |
| 2134 int num_names; | |
| 2135 | |
| 2136 #ifdef SHORT_FNAME | |
| 2137 /* | |
| 2138 * (MS-DOS) always short names | |
| 2139 */ | |
| 2140 names[0] = modname(path, (char_u *)".sw?", FALSE); | |
| 2141 num_names = 1; | |
| 2142 #else /* !SHORT_FNAME */ | |
| 2143 /* | |
| 2144 * (Win32 and Win64) never short names, but do prepend a dot. | |
| 2145 * (Not MS-DOS or Win32 or Win64) maybe short name, maybe not: Try both. | |
| 2146 * Only use the short name if it is different. | |
| 2147 */ | |
| 2148 char_u *p; | |
| 2149 int i; | |
| 2150 # ifndef WIN3264 | |
| 2151 int shortname = curbuf->b_shortname; | |
| 2152 | |
| 2153 curbuf->b_shortname = FALSE; | |
| 2154 # endif | |
| 2155 | |
| 2156 num_names = 0; | |
| 2157 | |
| 2158 /* | |
| 2159 * May also add the file name with a dot prepended, for swap file in same | |
| 2160 * dir as original file. | |
| 2161 */ | |
| 2162 if (prepend_dot) | |
| 2163 { | |
| 2164 names[num_names] = modname(path, (char_u *)".sw?", TRUE); | |
| 2165 if (names[num_names] == NULL) | |
| 2166 goto end; | |
| 2167 ++num_names; | |
| 2168 } | |
| 2169 | |
| 2170 /* | |
| 2171 * Form the normal swap file name pattern by appending ".sw?". | |
| 2172 */ | |
| 2173 #ifdef VMS | |
| 2174 names[num_names] = concat_fnames(path, (char_u *)"_sw%", FALSE); | |
| 2175 #else | |
| 2176 names[num_names] = concat_fnames(path, (char_u *)".sw?", FALSE); | |
| 2177 #endif | |
| 2178 if (names[num_names] == NULL) | |
| 2179 goto end; | |
| 2180 if (num_names >= 1) /* check if we have the same name twice */ | |
| 2181 { | |
| 2182 p = names[num_names - 1]; | |
| 2183 i = (int)STRLEN(names[num_names - 1]) - (int)STRLEN(names[num_names]); | |
| 2184 if (i > 0) | |
| 2185 p += i; /* file name has been expanded to full path */ | |
| 2186 | |
| 2187 if (STRCMP(p, names[num_names]) != 0) | |
| 2188 ++num_names; | |
| 2189 else | |
| 2190 vim_free(names[num_names]); | |
| 2191 } | |
| 2192 else | |
| 2193 ++num_names; | |
| 2194 | |
| 2195 # ifndef WIN3264 | |
| 2196 /* | |
| 2197 * Also try with 'shortname' set, in case the file is on a DOS filesystem. | |
| 2198 */ | |
| 2199 curbuf->b_shortname = TRUE; | |
| 2200 #ifdef VMS | |
| 2201 names[num_names] = modname(path, (char_u *)"_sw%", FALSE); | |
| 2202 #else | |
| 2203 names[num_names] = modname(path, (char_u *)".sw?", FALSE); | |
| 2204 #endif | |
| 2205 if (names[num_names] == NULL) | |
| 2206 goto end; | |
| 2207 | |
| 2208 /* | |
| 2209 * Remove the one from 'shortname', if it's the same as with 'noshortname'. | |
| 2210 */ | |
| 2211 p = names[num_names]; | |
| 2212 i = STRLEN(names[num_names]) - STRLEN(names[num_names - 1]); | |
| 2213 if (i > 0) | |
| 2214 p += i; /* file name has been expanded to full path */ | |
| 2215 if (STRCMP(names[num_names - 1], p) == 0) | |
| 2216 vim_free(names[num_names]); | |
| 2217 else | |
| 2218 ++num_names; | |
| 2219 # endif | |
| 2220 | |
| 2221 end: | |
| 2222 # ifndef WIN3264 | |
| 2223 curbuf->b_shortname = shortname; | |
| 2224 # endif | |
| 2225 | |
| 2226 #endif /* !SHORT_FNAME */ | |
| 2227 | |
| 2228 return num_names; | |
| 2229 } | |
| 2230 | |
| 2231 /* | |
| 2232 * sync all memlines | |
| 2233 * | |
| 2234 * If 'check_file' is TRUE, check if original file exists and was not changed. | |
| 2235 * If 'check_char' is TRUE, stop syncing when character becomes available, but | |
| 2236 * always sync at least one block. | |
| 2237 */ | |
| 2238 void | |
| 2239 ml_sync_all(check_file, check_char) | |
| 2240 int check_file; | |
| 2241 int check_char; | |
| 2242 { | |
| 2243 buf_T *buf; | |
| 2244 struct stat st; | |
| 2245 | |
| 2246 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
| 2247 { | |
| 2248 if (buf->b_ml.ml_mfp == NULL || buf->b_ml.ml_mfp->mf_fname == NULL) | |
| 2249 continue; /* no file */ | |
| 2250 | |
| 2251 ml_flush_line(buf); /* flush buffered line */ | |
| 2252 /* flush locked block */ | |
| 2253 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); | |
| 2254 if (bufIsChanged(buf) && check_file && mf_need_trans(buf->b_ml.ml_mfp) | |
| 2255 && buf->b_ffname != NULL) | |
| 2256 { | |
| 2257 /* | |
| 2258 * If the original file does not exist anymore or has been changed | |
| 2259 * call ml_preserve() to get rid of all negative numbered blocks. | |
| 2260 */ | |
| 2261 if (mch_stat((char *)buf->b_ffname, &st) == -1 | |
| 2262 || st.st_mtime != buf->b_mtime_read | |
|
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2263 || st.st_size != buf->b_orig_size) |
| 7 | 2264 { |
| 2265 ml_preserve(buf, FALSE); | |
| 2266 did_check_timestamps = FALSE; | |
| 2267 need_check_timestamps = TRUE; /* give message later */ | |
| 2268 } | |
| 2269 } | |
| 2270 if (buf->b_ml.ml_mfp->mf_dirty) | |
| 2271 { | |
| 2272 (void)mf_sync(buf->b_ml.ml_mfp, (check_char ? MFS_STOP : 0) | |
| 2273 | (bufIsChanged(buf) ? MFS_FLUSH : 0)); | |
| 2274 if (check_char && ui_char_avail()) /* character available now */ | |
| 2275 break; | |
| 2276 } | |
| 2277 } | |
| 2278 } | |
| 2279 | |
| 2280 /* | |
| 2281 * sync one buffer, including negative blocks | |
| 2282 * | |
| 2283 * after this all the blocks are in the swap file | |
| 2284 * | |
| 2285 * Used for the :preserve command and when the original file has been | |
| 2286 * changed or deleted. | |
| 2287 * | |
| 2288 * when message is TRUE the success of preserving is reported | |
| 2289 */ | |
| 2290 void | |
| 2291 ml_preserve(buf, message) | |
| 2292 buf_T *buf; | |
| 2293 int message; | |
| 2294 { | |
| 2295 bhdr_T *hp; | |
| 2296 linenr_T lnum; | |
| 2297 memfile_T *mfp = buf->b_ml.ml_mfp; | |
| 2298 int status; | |
| 2299 int got_int_save = got_int; | |
| 2300 | |
| 2301 if (mfp == NULL || mfp->mf_fname == NULL) | |
| 2302 { | |
| 2303 if (message) | |
| 2304 EMSG(_("E313: Cannot preserve, there is no swap file")); | |
| 2305 return; | |
| 2306 } | |
| 2307 | |
| 2308 /* We only want to stop when interrupted here, not when interrupted | |
| 2309 * before. */ | |
| 2310 got_int = FALSE; | |
| 2311 | |
| 2312 ml_flush_line(buf); /* flush buffered line */ | |
| 2313 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
| 2314 status = mf_sync(mfp, MFS_ALL | MFS_FLUSH); | |
| 2315 | |
| 2316 /* stack is invalid after mf_sync(.., MFS_ALL) */ | |
| 2317 buf->b_ml.ml_stack_top = 0; | |
| 2318 | |
| 2319 /* | |
| 2320 * Some of the data blocks may have been changed from negative to | |
| 2321 * positive block number. In that case the pointer blocks need to be | |
| 2322 * updated. | |
| 2323 * | |
| 2324 * We don't know in which pointer block the references are, so we visit | |
| 2325 * all data blocks until there are no more translations to be done (or | |
| 2326 * we hit the end of the file, which can only happen in case a write fails, | |
| 2327 * e.g. when file system if full). | |
| 2328 * ml_find_line() does the work by translating the negative block numbers | |
| 2329 * when getting the first line of each data block. | |
| 2330 */ | |
| 2331 if (mf_need_trans(mfp) && !got_int) | |
| 2332 { | |
| 2333 lnum = 1; | |
| 2334 while (mf_need_trans(mfp) && lnum <= buf->b_ml.ml_line_count) | |
| 2335 { | |
| 2336 hp = ml_find_line(buf, lnum, ML_FIND); | |
| 2337 if (hp == NULL) | |
| 2338 { | |
| 2339 status = FAIL; | |
| 2340 goto theend; | |
| 2341 } | |
| 2342 CHECK(buf->b_ml.ml_locked_low != lnum, "low != lnum"); | |
| 2343 lnum = buf->b_ml.ml_locked_high + 1; | |
| 2344 } | |
| 2345 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
| 2346 /* sync the updated pointer blocks */ | |
| 2347 if (mf_sync(mfp, MFS_ALL | MFS_FLUSH) == FAIL) | |
| 2348 status = FAIL; | |
| 2349 buf->b_ml.ml_stack_top = 0; /* stack is invalid now */ | |
| 2350 } | |
| 2351 theend: | |
| 2352 got_int |= got_int_save; | |
| 2353 | |
| 2354 if (message) | |
| 2355 { | |
| 2356 if (status == OK) | |
| 2357 MSG(_("File preserved")); | |
| 2358 else | |
| 2359 EMSG(_("E314: Preserve failed")); | |
| 2360 } | |
| 2361 } | |
| 2362 | |
| 2363 /* | |
| 2364 * NOTE: The pointer returned by the ml_get_*() functions only remains valid | |
| 2365 * until the next call! | |
| 2366 * line1 = ml_get(1); | |
| 2367 * line2 = ml_get(2); // line1 is now invalid! | |
| 2368 * Make a copy of the line if necessary. | |
| 2369 */ | |
| 2370 /* | |
| 2657 | 2371 * Return a pointer to a (read-only copy of a) line. |
| 7 | 2372 * |
| 2373 * On failure an error message is given and IObuff is returned (to avoid | |
| 2374 * having to check for error everywhere). | |
| 2375 */ | |
| 2376 char_u * | |
| 2377 ml_get(lnum) | |
| 2378 linenr_T lnum; | |
| 2379 { | |
| 2380 return ml_get_buf(curbuf, lnum, FALSE); | |
| 2381 } | |
| 2382 | |
| 2383 /* | |
| 2657 | 2384 * Return pointer to position "pos". |
| 7 | 2385 */ |
| 2386 char_u * | |
| 2387 ml_get_pos(pos) | |
| 2388 pos_T *pos; | |
| 2389 { | |
| 2390 return (ml_get_buf(curbuf, pos->lnum, FALSE) + pos->col); | |
| 2391 } | |
| 2392 | |
| 2393 /* | |
| 2657 | 2394 * Return pointer to cursor line. |
| 7 | 2395 */ |
| 2396 char_u * | |
| 2397 ml_get_curline() | |
| 2398 { | |
| 2399 return ml_get_buf(curbuf, curwin->w_cursor.lnum, FALSE); | |
| 2400 } | |
| 2401 | |
| 2402 /* | |
| 2657 | 2403 * Return pointer to cursor position. |
| 7 | 2404 */ |
| 2405 char_u * | |
| 2406 ml_get_cursor() | |
| 2407 { | |
| 2408 return (ml_get_buf(curbuf, curwin->w_cursor.lnum, FALSE) + | |
| 2409 curwin->w_cursor.col); | |
| 2410 } | |
| 2411 | |
| 2412 /* | |
| 2657 | 2413 * Return a pointer to a line in a specific buffer |
| 7 | 2414 * |
| 2415 * "will_change": if TRUE mark the buffer dirty (chars in the line will be | |
| 2416 * changed) | |
| 2417 */ | |
| 2418 char_u * | |
| 2419 ml_get_buf(buf, lnum, will_change) | |
| 2420 buf_T *buf; | |
| 2421 linenr_T lnum; | |
| 2422 int will_change; /* line will be changed */ | |
| 2423 { | |
| 1068 | 2424 bhdr_T *hp; |
| 2425 DATA_BL *dp; | |
| 2426 char_u *ptr; | |
| 2427 static int recursive = 0; | |
| 7 | 2428 |
| 2429 if (lnum > buf->b_ml.ml_line_count) /* invalid line number */ | |
| 2430 { | |
| 1068 | 2431 if (recursive == 0) |
| 2432 { | |
| 2433 /* Avoid giving this message for a recursive call, may happen when | |
| 2434 * the GUI redraws part of the text. */ | |
| 2435 ++recursive; | |
| 2436 EMSGN(_("E315: ml_get: invalid lnum: %ld"), lnum); | |
| 2437 --recursive; | |
| 2438 } | |
| 7 | 2439 errorret: |
| 2440 STRCPY(IObuff, "???"); | |
| 2441 return IObuff; | |
| 2442 } | |
| 2443 if (lnum <= 0) /* pretend line 0 is line 1 */ | |
| 2444 lnum = 1; | |
| 2445 | |
| 2446 if (buf->b_ml.ml_mfp == NULL) /* there are no lines */ | |
| 2447 return (char_u *)""; | |
| 2448 | |
|
2108
3cdf2a653e00
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Bram Moolenaar <bram@zimbu.org>
parents:
2075
diff
changeset
|
2449 /* |
|
3cdf2a653e00
updated for version 7.2.391
Bram Moolenaar <bram@zimbu.org>
parents:
2075
diff
changeset
|
2450 * See if it is the same line as requested last time. |
|
3cdf2a653e00
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parents:
2075
diff
changeset
|
2451 * Otherwise may need to flush last used line. |
|
3cdf2a653e00
updated for version 7.2.391
Bram Moolenaar <bram@zimbu.org>
parents:
2075
diff
changeset
|
2452 * Don't use the last used line when 'swapfile' is reset, need to load all |
|
3cdf2a653e00
updated for version 7.2.391
Bram Moolenaar <bram@zimbu.org>
parents:
2075
diff
changeset
|
2453 * blocks. |
|
3cdf2a653e00
updated for version 7.2.391
Bram Moolenaar <bram@zimbu.org>
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diff
changeset
|
2454 */ |
| 1066 | 2455 if (buf->b_ml.ml_line_lnum != lnum || mf_dont_release) |
| 7 | 2456 { |
| 2457 ml_flush_line(buf); | |
| 2458 | |
| 2459 /* | |
| 2460 * Find the data block containing the line. | |
| 2461 * This also fills the stack with the blocks from the root to the data | |
| 2462 * block and releases any locked block. | |
| 2463 */ | |
| 2464 if ((hp = ml_find_line(buf, lnum, ML_FIND)) == NULL) | |
| 2465 { | |
| 1068 | 2466 if (recursive == 0) |
| 2467 { | |
| 2468 /* Avoid giving this message for a recursive call, may happen | |
| 2469 * when the GUI redraws part of the text. */ | |
| 2470 ++recursive; | |
| 2471 EMSGN(_("E316: ml_get: cannot find line %ld"), lnum); | |
| 2472 --recursive; | |
| 2473 } | |
| 7 | 2474 goto errorret; |
| 2475 } | |
| 2476 | |
| 2477 dp = (DATA_BL *)(hp->bh_data); | |
| 2478 | |
| 2479 ptr = (char_u *)dp + ((dp->db_index[lnum - buf->b_ml.ml_locked_low]) & DB_INDEX_MASK); | |
| 2480 buf->b_ml.ml_line_ptr = ptr; | |
| 2481 buf->b_ml.ml_line_lnum = lnum; | |
| 2482 buf->b_ml.ml_flags &= ~ML_LINE_DIRTY; | |
| 2483 } | |
| 2484 if (will_change) | |
| 2485 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 2486 | |
| 2487 return buf->b_ml.ml_line_ptr; | |
| 2488 } | |
| 2489 | |
| 2490 /* | |
| 2491 * Check if a line that was just obtained by a call to ml_get | |
| 2492 * is in allocated memory. | |
| 2493 */ | |
| 2494 int | |
| 2495 ml_line_alloced() | |
| 2496 { | |
| 2497 return (curbuf->b_ml.ml_flags & ML_LINE_DIRTY); | |
| 2498 } | |
| 2499 | |
| 2500 /* | |
| 2501 * Append a line after lnum (may be 0 to insert a line in front of the file). | |
| 2502 * "line" does not need to be allocated, but can't be another line in a | |
| 2503 * buffer, unlocking may make it invalid. | |
| 2504 * | |
| 2505 * newfile: TRUE when starting to edit a new file, meaning that pe_old_lnum | |
| 2506 * will be set for recovery | |
| 2507 * Check: The caller of this function should probably also call | |
| 2508 * appended_lines(). | |
| 2509 * | |
| 2510 * return FAIL for failure, OK otherwise | |
| 2511 */ | |
| 2512 int | |
| 2513 ml_append(lnum, line, len, newfile) | |
| 2514 linenr_T lnum; /* append after this line (can be 0) */ | |
| 2515 char_u *line; /* text of the new line */ | |
| 2516 colnr_T len; /* length of new line, including NUL, or 0 */ | |
| 2517 int newfile; /* flag, see above */ | |
| 2518 { | |
| 2519 /* 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
|
2520 if (curbuf->b_ml.ml_mfp == NULL && open_buffer(FALSE, NULL, 0) == FAIL) |
| 7 | 2521 return FAIL; |
| 2522 | |
| 2523 if (curbuf->b_ml.ml_line_lnum != 0) | |
| 2524 ml_flush_line(curbuf); | |
| 2525 return ml_append_int(curbuf, lnum, line, len, newfile, FALSE); | |
| 2526 } | |
| 2527 | |
| 748 | 2528 #if defined(FEAT_SPELL) || defined(PROTO) |
| 625 | 2529 /* |
| 2530 * Like ml_append() but for an arbitrary buffer. The buffer must already have | |
| 2531 * a memline. | |
| 2532 */ | |
| 2533 int | |
| 2534 ml_append_buf(buf, lnum, line, len, newfile) | |
| 2535 buf_T *buf; | |
| 2536 linenr_T lnum; /* append after this line (can be 0) */ | |
| 2537 char_u *line; /* text of the new line */ | |
| 2538 colnr_T len; /* length of new line, including NUL, or 0 */ | |
| 2539 int newfile; /* flag, see above */ | |
| 2540 { | |
| 2541 if (buf->b_ml.ml_mfp == NULL) | |
| 2542 return FAIL; | |
| 2543 | |
| 2544 if (buf->b_ml.ml_line_lnum != 0) | |
| 2545 ml_flush_line(buf); | |
| 2546 return ml_append_int(buf, lnum, line, len, newfile, FALSE); | |
| 2547 } | |
| 2548 #endif | |
| 2549 | |
| 7 | 2550 static int |
| 2551 ml_append_int(buf, lnum, line, len, newfile, mark) | |
| 2552 buf_T *buf; | |
| 2553 linenr_T lnum; /* append after this line (can be 0) */ | |
| 2554 char_u *line; /* text of the new line */ | |
| 2555 colnr_T len; /* length of line, including NUL, or 0 */ | |
| 2556 int newfile; /* flag, see above */ | |
| 2557 int mark; /* mark the new line */ | |
| 2558 { | |
| 2559 int i; | |
| 2560 int line_count; /* number of indexes in current block */ | |
| 2561 int offset; | |
| 2562 int from, to; | |
| 2563 int space_needed; /* space needed for new line */ | |
| 2564 int page_size; | |
| 2565 int page_count; | |
| 2566 int db_idx; /* index for lnum in data block */ | |
| 2567 bhdr_T *hp; | |
| 2568 memfile_T *mfp; | |
| 2569 DATA_BL *dp; | |
| 2570 PTR_BL *pp; | |
| 2571 infoptr_T *ip; | |
| 2572 | |
| 2573 /* lnum out of range */ | |
| 2574 if (lnum > buf->b_ml.ml_line_count || buf->b_ml.ml_mfp == NULL) | |
| 2575 return FAIL; | |
| 2576 | |
| 2577 if (lowest_marked && lowest_marked > lnum) | |
| 2578 lowest_marked = lnum + 1; | |
| 2579 | |
| 2580 if (len == 0) | |
| 2581 len = (colnr_T)STRLEN(line) + 1; /* space needed for the text */ | |
| 2582 space_needed = len + INDEX_SIZE; /* space needed for text + index */ | |
| 2583 | |
| 2584 mfp = buf->b_ml.ml_mfp; | |
| 2585 page_size = mfp->mf_page_size; | |
| 2586 | |
| 2587 /* | |
| 2588 * find the data block containing the previous line | |
| 2589 * This also fills the stack with the blocks from the root to the data block | |
| 2590 * This also releases any locked block. | |
| 2591 */ | |
| 2592 if ((hp = ml_find_line(buf, lnum == 0 ? (linenr_T)1 : lnum, | |
| 2593 ML_INSERT)) == NULL) | |
| 2594 return FAIL; | |
| 2595 | |
| 2596 buf->b_ml.ml_flags &= ~ML_EMPTY; | |
| 2597 | |
| 2598 if (lnum == 0) /* got line one instead, correct db_idx */ | |
| 2599 db_idx = -1; /* careful, it is negative! */ | |
| 2600 else | |
| 2601 db_idx = lnum - buf->b_ml.ml_locked_low; | |
| 2602 /* get line count before the insertion */ | |
| 2603 line_count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low; | |
| 2604 | |
| 2605 dp = (DATA_BL *)(hp->bh_data); | |
| 2606 | |
| 2607 /* | |
| 2608 * If | |
| 2609 * - there is not enough room in the current block | |
| 2610 * - appending to the last line in the block | |
| 2611 * - not appending to the last line in the file | |
| 2612 * insert in front of the next block. | |
| 2613 */ | |
| 2614 if ((int)dp->db_free < space_needed && db_idx == line_count - 1 | |
| 2615 && lnum < buf->b_ml.ml_line_count) | |
| 2616 { | |
| 2617 /* | |
| 2618 * Now that the line is not going to be inserted in the block that we | |
| 2619 * expected, the line count has to be adjusted in the pointer blocks | |
| 2620 * by using ml_locked_lineadd. | |
| 2621 */ | |
| 2622 --(buf->b_ml.ml_locked_lineadd); | |
| 2623 --(buf->b_ml.ml_locked_high); | |
| 2624 if ((hp = ml_find_line(buf, lnum + 1, ML_INSERT)) == NULL) | |
| 2625 return FAIL; | |
| 2626 | |
| 2627 db_idx = -1; /* careful, it is negative! */ | |
| 2628 /* get line count before the insertion */ | |
| 2629 line_count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low; | |
| 2630 CHECK(buf->b_ml.ml_locked_low != lnum + 1, "locked_low != lnum + 1"); | |
| 2631 | |
| 2632 dp = (DATA_BL *)(hp->bh_data); | |
| 2633 } | |
| 2634 | |
| 2635 ++buf->b_ml.ml_line_count; | |
| 2636 | |
| 2637 if ((int)dp->db_free >= space_needed) /* enough room in data block */ | |
| 2638 { | |
| 2639 /* | |
| 2640 * Insert new line in existing data block, or in data block allocated above. | |
| 2641 */ | |
| 2642 dp->db_txt_start -= len; | |
| 2643 dp->db_free -= space_needed; | |
| 2644 ++(dp->db_line_count); | |
| 2645 | |
| 2646 /* | |
| 2647 * move the text of the lines that follow to the front | |
| 2648 * adjust the indexes of the lines that follow | |
| 2649 */ | |
| 2650 if (line_count > db_idx + 1) /* if there are following lines */ | |
| 2651 { | |
| 2652 /* | |
| 2653 * Offset is the start of the previous line. | |
| 2654 * This will become the character just after the new line. | |
| 2655 */ | |
| 2656 if (db_idx < 0) | |
| 2657 offset = dp->db_txt_end; | |
| 2658 else | |
| 2659 offset = ((dp->db_index[db_idx]) & DB_INDEX_MASK); | |
| 2660 mch_memmove((char *)dp + dp->db_txt_start, | |
| 2661 (char *)dp + dp->db_txt_start + len, | |
| 2662 (size_t)(offset - (dp->db_txt_start + len))); | |
| 2663 for (i = line_count - 1; i > db_idx; --i) | |
| 2664 dp->db_index[i + 1] = dp->db_index[i] - len; | |
| 2665 dp->db_index[db_idx + 1] = offset - len; | |
| 2666 } | |
| 2667 else /* add line at the end */ | |
| 2668 dp->db_index[db_idx + 1] = dp->db_txt_start; | |
| 2669 | |
| 2670 /* | |
| 2671 * copy the text into the block | |
| 2672 */ | |
| 2673 mch_memmove((char *)dp + dp->db_index[db_idx + 1], line, (size_t)len); | |
| 2674 if (mark) | |
| 2675 dp->db_index[db_idx + 1] |= DB_MARKED; | |
| 2676 | |
| 2677 /* | |
| 2678 * Mark the block dirty. | |
| 2679 */ | |
| 2680 buf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 2681 if (!newfile) | |
| 2682 buf->b_ml.ml_flags |= ML_LOCKED_POS; | |
| 2683 } | |
| 2684 else /* not enough space in data block */ | |
| 2685 { | |
| 2686 /* | |
| 2687 * If there is not enough room we have to create a new data block and copy some | |
| 2688 * lines into it. | |
| 2689 * Then we have to insert an entry in the pointer block. | |
| 2690 * If this pointer block also is full, we go up another block, and so on, up | |
| 2691 * to the root if necessary. | |
| 2692 * The line counts in the pointer blocks have already been adjusted by | |
| 2693 * ml_find_line(). | |
| 2694 */ | |
| 2695 long line_count_left, line_count_right; | |
| 2696 int page_count_left, page_count_right; | |
| 2697 bhdr_T *hp_left; | |
| 2698 bhdr_T *hp_right; | |
| 2699 bhdr_T *hp_new; | |
| 2700 int lines_moved; | |
| 2701 int data_moved = 0; /* init to shut up gcc */ | |
| 2702 int total_moved = 0; /* init to shut up gcc */ | |
| 2703 DATA_BL *dp_right, *dp_left; | |
| 2704 int stack_idx; | |
| 2705 int in_left; | |
| 2706 int lineadd; | |
| 2707 blocknr_T bnum_left, bnum_right; | |
| 2708 linenr_T lnum_left, lnum_right; | |
| 2709 int pb_idx; | |
| 2710 PTR_BL *pp_new; | |
| 2711 | |
| 2712 /* | |
| 2713 * We are going to allocate a new data block. Depending on the | |
| 2714 * situation it will be put to the left or right of the existing | |
| 2715 * block. If possible we put the new line in the left block and move | |
| 2716 * the lines after it to the right block. Otherwise the new line is | |
| 2717 * also put in the right block. This method is more efficient when | |
| 2718 * inserting a lot of lines at one place. | |
| 2719 */ | |
| 2720 if (db_idx < 0) /* left block is new, right block is existing */ | |
| 2721 { | |
| 2722 lines_moved = 0; | |
| 2723 in_left = TRUE; | |
| 2724 /* space_needed does not change */ | |
| 2725 } | |
| 2726 else /* left block is existing, right block is new */ | |
| 2727 { | |
| 2728 lines_moved = line_count - db_idx - 1; | |
| 2729 if (lines_moved == 0) | |
| 2730 in_left = FALSE; /* put new line in right block */ | |
| 2731 /* space_needed does not change */ | |
| 2732 else | |
| 2733 { | |
| 2734 data_moved = ((dp->db_index[db_idx]) & DB_INDEX_MASK) - | |
| 2735 dp->db_txt_start; | |
| 2736 total_moved = data_moved + lines_moved * INDEX_SIZE; | |
| 2737 if ((int)dp->db_free + total_moved >= space_needed) | |
| 2738 { | |
| 2739 in_left = TRUE; /* put new line in left block */ | |
| 2740 space_needed = total_moved; | |
| 2741 } | |
| 2742 else | |
| 2743 { | |
| 2744 in_left = FALSE; /* put new line in right block */ | |
| 2745 space_needed += total_moved; | |
| 2746 } | |
| 2747 } | |
| 2748 } | |
| 2749 | |
| 2750 page_count = ((space_needed + HEADER_SIZE) + page_size - 1) / page_size; | |
| 2751 if ((hp_new = ml_new_data(mfp, newfile, page_count)) == NULL) | |
| 2752 { | |
| 2753 /* correct line counts in pointer blocks */ | |
| 2754 --(buf->b_ml.ml_locked_lineadd); | |
| 2755 --(buf->b_ml.ml_locked_high); | |
| 2756 return FAIL; | |
| 2757 } | |
| 2758 if (db_idx < 0) /* left block is new */ | |
| 2759 { | |
| 2760 hp_left = hp_new; | |
| 2761 hp_right = hp; | |
| 2762 line_count_left = 0; | |
| 2763 line_count_right = line_count; | |
| 2764 } | |
| 2765 else /* right block is new */ | |
| 2766 { | |
| 2767 hp_left = hp; | |
| 2768 hp_right = hp_new; | |
| 2769 line_count_left = line_count; | |
| 2770 line_count_right = 0; | |
| 2771 } | |
| 2772 dp_right = (DATA_BL *)(hp_right->bh_data); | |
| 2773 dp_left = (DATA_BL *)(hp_left->bh_data); | |
| 2774 bnum_left = hp_left->bh_bnum; | |
| 2775 bnum_right = hp_right->bh_bnum; | |
| 2776 page_count_left = hp_left->bh_page_count; | |
| 2777 page_count_right = hp_right->bh_page_count; | |
| 2778 | |
| 2779 /* | |
| 2780 * May move the new line into the right/new block. | |
| 2781 */ | |
| 2782 if (!in_left) | |
| 2783 { | |
| 2784 dp_right->db_txt_start -= len; | |
| 2785 dp_right->db_free -= len + INDEX_SIZE; | |
| 2786 dp_right->db_index[0] = dp_right->db_txt_start; | |
| 2787 if (mark) | |
| 2788 dp_right->db_index[0] |= DB_MARKED; | |
| 2789 | |
| 2790 mch_memmove((char *)dp_right + dp_right->db_txt_start, | |
| 2791 line, (size_t)len); | |
| 2792 ++line_count_right; | |
| 2793 } | |
| 2794 /* | |
| 2795 * may move lines from the left/old block to the right/new one. | |
| 2796 */ | |
| 2797 if (lines_moved) | |
| 2798 { | |
| 2799 /* | |
| 2800 */ | |
| 2801 dp_right->db_txt_start -= data_moved; | |
| 2802 dp_right->db_free -= total_moved; | |
| 2803 mch_memmove((char *)dp_right + dp_right->db_txt_start, | |
| 2804 (char *)dp_left + dp_left->db_txt_start, | |
| 2805 (size_t)data_moved); | |
| 2806 offset = dp_right->db_txt_start - dp_left->db_txt_start; | |
| 2807 dp_left->db_txt_start += data_moved; | |
| 2808 dp_left->db_free += total_moved; | |
| 2809 | |
| 2810 /* | |
| 2811 * update indexes in the new block | |
| 2812 */ | |
| 2813 for (to = line_count_right, from = db_idx + 1; | |
| 2814 from < line_count_left; ++from, ++to) | |
| 2815 dp_right->db_index[to] = dp->db_index[from] + offset; | |
| 2816 line_count_right += lines_moved; | |
| 2817 line_count_left -= lines_moved; | |
| 2818 } | |
| 2819 | |
| 2820 /* | |
| 2821 * May move the new line into the left (old or new) block. | |
| 2822 */ | |
| 2823 if (in_left) | |
| 2824 { | |
| 2825 dp_left->db_txt_start -= len; | |
| 2826 dp_left->db_free -= len + INDEX_SIZE; | |
| 2827 dp_left->db_index[line_count_left] = dp_left->db_txt_start; | |
| 2828 if (mark) | |
| 2829 dp_left->db_index[line_count_left] |= DB_MARKED; | |
| 2830 mch_memmove((char *)dp_left + dp_left->db_txt_start, | |
| 2831 line, (size_t)len); | |
| 2832 ++line_count_left; | |
| 2833 } | |
| 2834 | |
| 2835 if (db_idx < 0) /* left block is new */ | |
| 2836 { | |
| 2837 lnum_left = lnum + 1; | |
| 2838 lnum_right = 0; | |
| 2839 } | |
| 2840 else /* right block is new */ | |
| 2841 { | |
| 2842 lnum_left = 0; | |
| 2843 if (in_left) | |
| 2844 lnum_right = lnum + 2; | |
| 2845 else | |
| 2846 lnum_right = lnum + 1; | |
| 2847 } | |
| 2848 dp_left->db_line_count = line_count_left; | |
| 2849 dp_right->db_line_count = line_count_right; | |
| 2850 | |
| 2851 /* | |
| 2852 * release the two data blocks | |
| 2853 * The new one (hp_new) already has a correct blocknumber. | |
| 2854 * The old one (hp, in ml_locked) gets a positive blocknumber if | |
| 2855 * we changed it and we are not editing a new file. | |
| 2856 */ | |
| 2857 if (lines_moved || in_left) | |
| 2858 buf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 2859 if (!newfile && db_idx >= 0 && in_left) | |
| 2860 buf->b_ml.ml_flags |= ML_LOCKED_POS; | |
| 2861 mf_put(mfp, hp_new, TRUE, FALSE); | |
| 2862 | |
| 2863 /* | |
| 2864 * flush the old data block | |
| 2865 * set ml_locked_lineadd to 0, because the updating of the | |
| 2866 * pointer blocks is done below | |
| 2867 */ | |
| 2868 lineadd = buf->b_ml.ml_locked_lineadd; | |
| 2869 buf->b_ml.ml_locked_lineadd = 0; | |
| 2870 ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush data block */ | |
| 2871 | |
| 2872 /* | |
| 2873 * update pointer blocks for the new data block | |
| 2874 */ | |
| 2875 for (stack_idx = buf->b_ml.ml_stack_top - 1; stack_idx >= 0; | |
| 2876 --stack_idx) | |
| 2877 { | |
| 2878 ip = &(buf->b_ml.ml_stack[stack_idx]); | |
| 2879 pb_idx = ip->ip_index; | |
| 2880 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
| 2881 return FAIL; | |
| 2882 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
| 2883 if (pp->pb_id != PTR_ID) | |
| 2884 { | |
| 2885 EMSG(_("E317: pointer block id wrong 3")); | |
| 2886 mf_put(mfp, hp, FALSE, FALSE); | |
| 2887 return FAIL; | |
| 2888 } | |
| 2889 /* | |
| 2890 * TODO: If the pointer block is full and we are adding at the end | |
| 2891 * try to insert in front of the next block | |
| 2892 */ | |
| 2893 /* block not full, add one entry */ | |
| 2894 if (pp->pb_count < pp->pb_count_max) | |
| 2895 { | |
| 2896 if (pb_idx + 1 < (int)pp->pb_count) | |
| 2897 mch_memmove(&pp->pb_pointer[pb_idx + 2], | |
| 2898 &pp->pb_pointer[pb_idx + 1], | |
| 2899 (size_t)(pp->pb_count - pb_idx - 1) * sizeof(PTR_EN)); | |
| 2900 ++pp->pb_count; | |
| 2901 pp->pb_pointer[pb_idx].pe_line_count = line_count_left; | |
| 2902 pp->pb_pointer[pb_idx].pe_bnum = bnum_left; | |
| 2903 pp->pb_pointer[pb_idx].pe_page_count = page_count_left; | |
| 2904 pp->pb_pointer[pb_idx + 1].pe_line_count = line_count_right; | |
| 2905 pp->pb_pointer[pb_idx + 1].pe_bnum = bnum_right; | |
| 2906 pp->pb_pointer[pb_idx + 1].pe_page_count = page_count_right; | |
| 2907 | |
| 2908 if (lnum_left != 0) | |
| 2909 pp->pb_pointer[pb_idx].pe_old_lnum = lnum_left; | |
| 2910 if (lnum_right != 0) | |
| 2911 pp->pb_pointer[pb_idx + 1].pe_old_lnum = lnum_right; | |
| 2912 | |
| 2913 mf_put(mfp, hp, TRUE, FALSE); | |
| 2914 buf->b_ml.ml_stack_top = stack_idx + 1; /* truncate stack */ | |
| 2915 | |
| 2916 if (lineadd) | |
| 2917 { | |
| 2918 --(buf->b_ml.ml_stack_top); | |
| 1167 | 2919 /* fix line count for rest of blocks in the stack */ |
| 7 | 2920 ml_lineadd(buf, lineadd); |
| 2921 /* fix stack itself */ | |
| 2922 buf->b_ml.ml_stack[buf->b_ml.ml_stack_top].ip_high += | |
| 2923 lineadd; | |
| 2924 ++(buf->b_ml.ml_stack_top); | |
| 2925 } | |
| 2926 | |
| 2927 /* | |
| 2928 * We are finished, break the loop here. | |
| 2929 */ | |
| 2930 break; | |
| 2931 } | |
| 2932 else /* pointer block full */ | |
| 2933 { | |
| 2934 /* | |
| 2935 * split the pointer block | |
| 2936 * allocate a new pointer block | |
| 2937 * move some of the pointer into the new block | |
| 2938 * prepare for updating the parent block | |
| 2939 */ | |
| 2940 for (;;) /* do this twice when splitting block 1 */ | |
| 2941 { | |
| 2942 hp_new = ml_new_ptr(mfp); | |
| 2943 if (hp_new == NULL) /* TODO: try to fix tree */ | |
| 2944 return FAIL; | |
| 2945 pp_new = (PTR_BL *)(hp_new->bh_data); | |
| 2946 | |
| 2947 if (hp->bh_bnum != 1) | |
| 2948 break; | |
| 2949 | |
| 2950 /* | |
| 2951 * if block 1 becomes full the tree is given an extra level | |
| 2952 * The pointers from block 1 are moved into the new block. | |
| 2953 * block 1 is updated to point to the new block | |
| 2954 * then continue to split the new block | |
| 2955 */ | |
| 2956 mch_memmove(pp_new, pp, (size_t)page_size); | |
| 2957 pp->pb_count = 1; | |
| 2958 pp->pb_pointer[0].pe_bnum = hp_new->bh_bnum; | |
| 2959 pp->pb_pointer[0].pe_line_count = buf->b_ml.ml_line_count; | |
| 2960 pp->pb_pointer[0].pe_old_lnum = 1; | |
| 2961 pp->pb_pointer[0].pe_page_count = 1; | |
| 2962 mf_put(mfp, hp, TRUE, FALSE); /* release block 1 */ | |
| 2963 hp = hp_new; /* new block is to be split */ | |
| 2964 pp = pp_new; | |
| 2965 CHECK(stack_idx != 0, _("stack_idx should be 0")); | |
| 2966 ip->ip_index = 0; | |
| 2967 ++stack_idx; /* do block 1 again later */ | |
| 2968 } | |
| 2969 /* | |
| 2970 * move the pointers after the current one to the new block | |
| 2971 * If there are none, the new entry will be in the new block. | |
| 2972 */ | |
| 2973 total_moved = pp->pb_count - pb_idx - 1; | |
| 2974 if (total_moved) | |
| 2975 { | |
| 2976 mch_memmove(&pp_new->pb_pointer[0], | |
| 2977 &pp->pb_pointer[pb_idx + 1], | |
| 2978 (size_t)(total_moved) * sizeof(PTR_EN)); | |
| 2979 pp_new->pb_count = total_moved; | |
| 2980 pp->pb_count -= total_moved - 1; | |
| 2981 pp->pb_pointer[pb_idx + 1].pe_bnum = bnum_right; | |
| 2982 pp->pb_pointer[pb_idx + 1].pe_line_count = line_count_right; | |
| 2983 pp->pb_pointer[pb_idx + 1].pe_page_count = page_count_right; | |
| 2984 if (lnum_right) | |
| 2985 pp->pb_pointer[pb_idx + 1].pe_old_lnum = lnum_right; | |
| 2986 } | |
| 2987 else | |
| 2988 { | |
| 2989 pp_new->pb_count = 1; | |
| 2990 pp_new->pb_pointer[0].pe_bnum = bnum_right; | |
| 2991 pp_new->pb_pointer[0].pe_line_count = line_count_right; | |
| 2992 pp_new->pb_pointer[0].pe_page_count = page_count_right; | |
| 2993 pp_new->pb_pointer[0].pe_old_lnum = lnum_right; | |
| 2994 } | |
| 2995 pp->pb_pointer[pb_idx].pe_bnum = bnum_left; | |
| 2996 pp->pb_pointer[pb_idx].pe_line_count = line_count_left; | |
| 2997 pp->pb_pointer[pb_idx].pe_page_count = page_count_left; | |
| 2998 if (lnum_left) | |
| 2999 pp->pb_pointer[pb_idx].pe_old_lnum = lnum_left; | |
| 3000 lnum_left = 0; | |
| 3001 lnum_right = 0; | |
| 3002 | |
| 3003 /* | |
| 3004 * recompute line counts | |
| 3005 */ | |
| 3006 line_count_right = 0; | |
| 3007 for (i = 0; i < (int)pp_new->pb_count; ++i) | |
| 3008 line_count_right += pp_new->pb_pointer[i].pe_line_count; | |
| 3009 line_count_left = 0; | |
| 3010 for (i = 0; i < (int)pp->pb_count; ++i) | |
| 3011 line_count_left += pp->pb_pointer[i].pe_line_count; | |
| 3012 | |
| 3013 bnum_left = hp->bh_bnum; | |
| 3014 bnum_right = hp_new->bh_bnum; | |
| 3015 page_count_left = 1; | |
| 3016 page_count_right = 1; | |
| 3017 mf_put(mfp, hp, TRUE, FALSE); | |
| 3018 mf_put(mfp, hp_new, TRUE, FALSE); | |
| 3019 } | |
| 3020 } | |
| 3021 | |
| 3022 /* | |
| 3023 * Safety check: fallen out of for loop? | |
| 3024 */ | |
| 3025 if (stack_idx < 0) | |
| 3026 { | |
| 3027 EMSG(_("E318: Updated too many blocks?")); | |
| 3028 buf->b_ml.ml_stack_top = 0; /* invalidate stack */ | |
| 3029 } | |
| 3030 } | |
| 3031 | |
| 3032 #ifdef FEAT_BYTEOFF | |
| 3033 /* The line was inserted below 'lnum' */ | |
| 3034 ml_updatechunk(buf, lnum + 1, (long)len, ML_CHNK_ADDLINE); | |
| 3035 #endif | |
| 3036 #ifdef FEAT_NETBEANS_INTG | |
| 2210 | 3037 if (netbeans_active()) |
| 7 | 3038 { |
| 3039 if (STRLEN(line) > 0) | |
| 835 | 3040 netbeans_inserted(buf, lnum+1, (colnr_T)0, line, (int)STRLEN(line)); |
| 34 | 3041 netbeans_inserted(buf, lnum+1, (colnr_T)STRLEN(line), |
| 7 | 3042 (char_u *)"\n", 1); |
| 3043 } | |
| 3044 #endif | |
| 3045 return OK; | |
| 3046 } | |
| 3047 | |
| 3048 /* | |
| 625 | 3049 * Replace line lnum, with buffering, in current buffer. |
| 7 | 3050 * |
| 720 | 3051 * If "copy" is TRUE, make a copy of the line, otherwise the line has been |
| 7 | 3052 * copied to allocated memory already. |
| 3053 * | |
| 3054 * Check: The caller of this function should probably also call | |
| 3055 * changed_lines(), unless update_screen(NOT_VALID) is used. | |
| 3056 * | |
| 3057 * return FAIL for failure, OK otherwise | |
| 3058 */ | |
| 3059 int | |
| 3060 ml_replace(lnum, line, copy) | |
| 3061 linenr_T lnum; | |
| 3062 char_u *line; | |
| 3063 int copy; | |
| 3064 { | |
| 3065 if (line == NULL) /* just checking... */ | |
| 3066 return FAIL; | |
| 3067 | |
| 3068 /* 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
|
3069 if (curbuf->b_ml.ml_mfp == NULL && open_buffer(FALSE, NULL, 0) == FAIL) |
| 7 | 3070 return FAIL; |
| 3071 | |
| 3072 if (copy && (line = vim_strsave(line)) == NULL) /* allocate memory */ | |
| 3073 return FAIL; | |
| 3074 #ifdef FEAT_NETBEANS_INTG | |
| 2210 | 3075 if (netbeans_active()) |
| 7 | 3076 { |
| 3077 netbeans_removed(curbuf, lnum, 0, (long)STRLEN(ml_get(lnum))); | |
| 835 | 3078 netbeans_inserted(curbuf, lnum, 0, line, (int)STRLEN(line)); |
| 7 | 3079 } |
| 3080 #endif | |
| 3081 if (curbuf->b_ml.ml_line_lnum != lnum) /* other line buffered */ | |
| 3082 ml_flush_line(curbuf); /* flush it */ | |
| 3083 else if (curbuf->b_ml.ml_flags & ML_LINE_DIRTY) /* same line allocated */ | |
| 3084 vim_free(curbuf->b_ml.ml_line_ptr); /* free it */ | |
| 3085 curbuf->b_ml.ml_line_ptr = line; | |
| 3086 curbuf->b_ml.ml_line_lnum = lnum; | |
| 3087 curbuf->b_ml.ml_flags = (curbuf->b_ml.ml_flags | ML_LINE_DIRTY) & ~ML_EMPTY; | |
| 3088 | |
| 3089 return OK; | |
| 3090 } | |
| 3091 | |
| 3092 /* | |
| 625 | 3093 * Delete line 'lnum' in the current buffer. |
| 7 | 3094 * |
| 3095 * Check: The caller of this function should probably also call | |
| 3096 * deleted_lines() after this. | |
| 3097 * | |
| 3098 * return FAIL for failure, OK otherwise | |
| 3099 */ | |
| 3100 int | |
| 3101 ml_delete(lnum, message) | |
| 3102 linenr_T lnum; | |
| 3103 int message; | |
| 3104 { | |
| 3105 ml_flush_line(curbuf); | |
| 3106 return ml_delete_int(curbuf, lnum, message); | |
| 3107 } | |
| 3108 | |
| 3109 static int | |
| 3110 ml_delete_int(buf, lnum, message) | |
| 3111 buf_T *buf; | |
| 3112 linenr_T lnum; | |
| 3113 int message; | |
| 3114 { | |
| 3115 bhdr_T *hp; | |
| 3116 memfile_T *mfp; | |
| 3117 DATA_BL *dp; | |
| 3118 PTR_BL *pp; | |
| 3119 infoptr_T *ip; | |
| 3120 int count; /* number of entries in block */ | |
| 3121 int idx; | |
| 3122 int stack_idx; | |
| 3123 int text_start; | |
| 3124 int line_start; | |
| 3125 long line_size; | |
| 3126 int i; | |
| 3127 | |
| 3128 if (lnum < 1 || lnum > buf->b_ml.ml_line_count) | |
| 3129 return FAIL; | |
| 3130 | |
| 3131 if (lowest_marked && lowest_marked > lnum) | |
| 3132 lowest_marked--; | |
| 3133 | |
| 3134 /* | |
| 3135 * If the file becomes empty the last line is replaced by an empty line. | |
| 3136 */ | |
| 3137 if (buf->b_ml.ml_line_count == 1) /* file becomes empty */ | |
| 3138 { | |
| 3139 if (message | |
| 3140 #ifdef FEAT_NETBEANS_INTG | |
| 3141 && !netbeansSuppressNoLines | |
| 3142 #endif | |
| 3143 ) | |
| 680 | 3144 set_keep_msg((char_u *)_(no_lines_msg), 0); |
| 3145 | |
| 7 | 3146 /* FEAT_BYTEOFF already handled in there, dont worry 'bout it below */ |
| 3147 i = ml_replace((linenr_T)1, (char_u *)"", TRUE); | |
| 3148 buf->b_ml.ml_flags |= ML_EMPTY; | |
| 3149 | |
| 3150 return i; | |
| 3151 } | |
| 3152 | |
| 3153 /* | |
| 3154 * find the data block containing the line | |
| 3155 * This also fills the stack with the blocks from the root to the data block | |
| 3156 * This also releases any locked block. | |
| 3157 */ | |
| 3158 mfp = buf->b_ml.ml_mfp; | |
| 3159 if (mfp == NULL) | |
| 3160 return FAIL; | |
| 3161 | |
| 3162 if ((hp = ml_find_line(buf, lnum, ML_DELETE)) == NULL) | |
| 3163 return FAIL; | |
| 3164 | |
| 3165 dp = (DATA_BL *)(hp->bh_data); | |
| 3166 /* compute line count before the delete */ | |
| 3167 count = (long)(buf->b_ml.ml_locked_high) | |
| 3168 - (long)(buf->b_ml.ml_locked_low) + 2; | |
| 3169 idx = lnum - buf->b_ml.ml_locked_low; | |
| 3170 | |
| 3171 --buf->b_ml.ml_line_count; | |
| 3172 | |
| 3173 line_start = ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 3174 if (idx == 0) /* first line in block, text at the end */ | |
| 3175 line_size = dp->db_txt_end - line_start; | |
| 3176 else | |
| 3177 line_size = ((dp->db_index[idx - 1]) & DB_INDEX_MASK) - line_start; | |
| 3178 | |
| 3179 #ifdef FEAT_NETBEANS_INTG | |
| 2210 | 3180 if (netbeans_active()) |
| 34 | 3181 netbeans_removed(buf, lnum, 0, (long)line_size); |
| 7 | 3182 #endif |
| 3183 | |
| 3184 /* | |
| 3185 * special case: If there is only one line in the data block it becomes empty. | |
| 3186 * Then we have to remove the entry, pointing to this data block, from the | |
| 3187 * pointer block. If this pointer block also becomes empty, we go up another | |
| 3188 * block, and so on, up to the root if necessary. | |
| 3189 * The line counts in the pointer blocks have already been adjusted by | |
| 3190 * ml_find_line(). | |
| 3191 */ | |
| 3192 if (count == 1) | |
| 3193 { | |
| 3194 mf_free(mfp, hp); /* free the data block */ | |
| 3195 buf->b_ml.ml_locked = NULL; | |
| 3196 | |
| 2823 | 3197 for (stack_idx = buf->b_ml.ml_stack_top - 1; stack_idx >= 0; |
| 3198 --stack_idx) | |
| 7 | 3199 { |
| 3200 buf->b_ml.ml_stack_top = 0; /* stack is invalid when failing */ | |
| 3201 ip = &(buf->b_ml.ml_stack[stack_idx]); | |
| 3202 idx = ip->ip_index; | |
| 3203 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
| 3204 return FAIL; | |
| 3205 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
| 3206 if (pp->pb_id != PTR_ID) | |
| 3207 { | |
| 3208 EMSG(_("E317: pointer block id wrong 4")); | |
| 3209 mf_put(mfp, hp, FALSE, FALSE); | |
| 3210 return FAIL; | |
| 3211 } | |
| 3212 count = --(pp->pb_count); | |
| 3213 if (count == 0) /* the pointer block becomes empty! */ | |
| 3214 mf_free(mfp, hp); | |
| 3215 else | |
| 3216 { | |
| 3217 if (count != idx) /* move entries after the deleted one */ | |
| 3218 mch_memmove(&pp->pb_pointer[idx], &pp->pb_pointer[idx + 1], | |
| 3219 (size_t)(count - idx) * sizeof(PTR_EN)); | |
| 3220 mf_put(mfp, hp, TRUE, FALSE); | |
| 3221 | |
| 3222 buf->b_ml.ml_stack_top = stack_idx; /* truncate stack */ | |
| 1167 | 3223 /* fix line count for rest of blocks in the stack */ |
| 3224 if (buf->b_ml.ml_locked_lineadd != 0) | |
| 7 | 3225 { |
| 3226 ml_lineadd(buf, buf->b_ml.ml_locked_lineadd); | |
| 3227 buf->b_ml.ml_stack[buf->b_ml.ml_stack_top].ip_high += | |
| 1167 | 3228 buf->b_ml.ml_locked_lineadd; |
| 7 | 3229 } |
| 3230 ++(buf->b_ml.ml_stack_top); | |
| 3231 | |
| 3232 break; | |
| 3233 } | |
| 3234 } | |
| 3235 CHECK(stack_idx < 0, _("deleted block 1?")); | |
| 3236 } | |
| 3237 else | |
| 3238 { | |
| 3239 /* | |
| 3240 * delete the text by moving the next lines forwards | |
| 3241 */ | |
| 3242 text_start = dp->db_txt_start; | |
| 3243 mch_memmove((char *)dp + text_start + line_size, | |
| 3244 (char *)dp + text_start, (size_t)(line_start - text_start)); | |
| 3245 | |
| 3246 /* | |
| 3247 * delete the index by moving the next indexes backwards | |
| 3248 * Adjust the indexes for the text movement. | |
| 3249 */ | |
| 3250 for (i = idx; i < count - 1; ++i) | |
| 3251 dp->db_index[i] = dp->db_index[i + 1] + line_size; | |
| 3252 | |
| 3253 dp->db_free += line_size + INDEX_SIZE; | |
| 3254 dp->db_txt_start += line_size; | |
| 3255 --(dp->db_line_count); | |
| 3256 | |
| 3257 /* | |
| 3258 * mark the block dirty and make sure it is in the file (for recovery) | |
| 3259 */ | |
| 3260 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 3261 } | |
| 3262 | |
| 3263 #ifdef FEAT_BYTEOFF | |
| 3264 ml_updatechunk(buf, lnum, line_size, ML_CHNK_DELLINE); | |
| 3265 #endif | |
| 3266 return OK; | |
| 3267 } | |
| 3268 | |
| 3269 /* | |
| 3270 * set the B_MARKED flag for line 'lnum' | |
| 3271 */ | |
| 3272 void | |
| 3273 ml_setmarked(lnum) | |
| 3274 linenr_T lnum; | |
| 3275 { | |
| 3276 bhdr_T *hp; | |
| 3277 DATA_BL *dp; | |
| 3278 /* invalid line number */ | |
| 3279 if (lnum < 1 || lnum > curbuf->b_ml.ml_line_count | |
| 3280 || curbuf->b_ml.ml_mfp == NULL) | |
| 3281 return; /* give error message? */ | |
| 3282 | |
| 3283 if (lowest_marked == 0 || lowest_marked > lnum) | |
| 3284 lowest_marked = lnum; | |
| 3285 | |
| 3286 /* | |
| 3287 * find the data block containing the line | |
| 3288 * This also fills the stack with the blocks from the root to the data block | |
| 3289 * This also releases any locked block. | |
| 3290 */ | |
| 3291 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
| 3292 return; /* give error message? */ | |
| 3293 | |
| 3294 dp = (DATA_BL *)(hp->bh_data); | |
| 3295 dp->db_index[lnum - curbuf->b_ml.ml_locked_low] |= DB_MARKED; | |
| 3296 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 3297 } | |
| 3298 | |
| 3299 /* | |
| 3300 * find the first line with its B_MARKED flag set | |
| 3301 */ | |
| 3302 linenr_T | |
| 3303 ml_firstmarked() | |
| 3304 { | |
| 3305 bhdr_T *hp; | |
| 3306 DATA_BL *dp; | |
| 3307 linenr_T lnum; | |
| 3308 int i; | |
| 3309 | |
| 3310 if (curbuf->b_ml.ml_mfp == NULL) | |
| 3311 return (linenr_T) 0; | |
| 3312 | |
| 3313 /* | |
| 3314 * The search starts with lowest_marked line. This is the last line where | |
| 3315 * a mark was found, adjusted by inserting/deleting lines. | |
| 3316 */ | |
| 3317 for (lnum = lowest_marked; lnum <= curbuf->b_ml.ml_line_count; ) | |
| 3318 { | |
| 3319 /* | |
| 3320 * Find the data block containing the line. | |
| 3321 * This also fills the stack with the blocks from the root to the data | |
| 3322 * block This also releases any locked block. | |
| 3323 */ | |
| 3324 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
| 3325 return (linenr_T)0; /* give error message? */ | |
| 3326 | |
| 3327 dp = (DATA_BL *)(hp->bh_data); | |
| 3328 | |
| 3329 for (i = lnum - curbuf->b_ml.ml_locked_low; | |
| 3330 lnum <= curbuf->b_ml.ml_locked_high; ++i, ++lnum) | |
| 3331 if ((dp->db_index[i]) & DB_MARKED) | |
| 3332 { | |
| 3333 (dp->db_index[i]) &= DB_INDEX_MASK; | |
| 3334 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 3335 lowest_marked = lnum + 1; | |
| 3336 return lnum; | |
| 3337 } | |
| 3338 } | |
| 3339 | |
| 3340 return (linenr_T) 0; | |
| 3341 } | |
| 3342 | |
| 3343 /* | |
| 3344 * clear all DB_MARKED flags | |
| 3345 */ | |
| 3346 void | |
| 3347 ml_clearmarked() | |
| 3348 { | |
| 3349 bhdr_T *hp; | |
| 3350 DATA_BL *dp; | |
| 3351 linenr_T lnum; | |
| 3352 int i; | |
| 3353 | |
| 3354 if (curbuf->b_ml.ml_mfp == NULL) /* nothing to do */ | |
| 3355 return; | |
| 3356 | |
| 3357 /* | |
| 3358 * The search starts with line lowest_marked. | |
| 3359 */ | |
| 3360 for (lnum = lowest_marked; lnum <= curbuf->b_ml.ml_line_count; ) | |
| 3361 { | |
| 3362 /* | |
| 3363 * Find the data block containing the line. | |
| 3364 * This also fills the stack with the blocks from the root to the data | |
| 3365 * block and releases any locked block. | |
| 3366 */ | |
| 3367 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
| 3368 return; /* give error message? */ | |
| 3369 | |
| 3370 dp = (DATA_BL *)(hp->bh_data); | |
| 3371 | |
| 3372 for (i = lnum - curbuf->b_ml.ml_locked_low; | |
| 3373 lnum <= curbuf->b_ml.ml_locked_high; ++i, ++lnum) | |
| 3374 if ((dp->db_index[i]) & DB_MARKED) | |
| 3375 { | |
| 3376 (dp->db_index[i]) &= DB_INDEX_MASK; | |
| 3377 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 3378 } | |
| 3379 } | |
| 3380 | |
| 3381 lowest_marked = 0; | |
| 3382 return; | |
| 3383 } | |
| 3384 | |
| 3385 /* | |
| 3386 * flush ml_line if necessary | |
| 3387 */ | |
| 3388 static void | |
| 3389 ml_flush_line(buf) | |
| 3390 buf_T *buf; | |
| 3391 { | |
| 3392 bhdr_T *hp; | |
| 3393 DATA_BL *dp; | |
| 3394 linenr_T lnum; | |
| 3395 char_u *new_line; | |
| 3396 char_u *old_line; | |
| 3397 colnr_T new_len; | |
| 3398 int old_len; | |
| 3399 int extra; | |
| 3400 int idx; | |
| 3401 int start; | |
| 3402 int count; | |
| 3403 int i; | |
|
2075
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2003
diff
changeset
|
3404 static int entered = FALSE; |
| 7 | 3405 |
| 3406 if (buf->b_ml.ml_line_lnum == 0 || buf->b_ml.ml_mfp == NULL) | |
| 3407 return; /* nothing to do */ | |
| 3408 | |
| 3409 if (buf->b_ml.ml_flags & ML_LINE_DIRTY) | |
| 3410 { | |
|
2075
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parents:
2003
diff
changeset
|
3411 /* This code doesn't work recursively, but Netbeans may call back here |
|
903fcd726d90
updated for version 7.2.359
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parents:
2003
diff
changeset
|
3412 * when obtaining the cursor position. */ |
|
903fcd726d90
updated for version 7.2.359
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parents:
2003
diff
changeset
|
3413 if (entered) |
|
903fcd726d90
updated for version 7.2.359
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parents:
2003
diff
changeset
|
3414 return; |
|
903fcd726d90
updated for version 7.2.359
Bram Moolenaar <bram@zimbu.org>
parents:
2003
diff
changeset
|
3415 entered = TRUE; |
|
903fcd726d90
updated for version 7.2.359
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parents:
2003
diff
changeset
|
3416 |
| 7 | 3417 lnum = buf->b_ml.ml_line_lnum; |
| 3418 new_line = buf->b_ml.ml_line_ptr; | |
| 3419 | |
| 3420 hp = ml_find_line(buf, lnum, ML_FIND); | |
| 3421 if (hp == NULL) | |
| 3422 EMSGN(_("E320: Cannot find line %ld"), lnum); | |
| 3423 else | |
| 3424 { | |
| 3425 dp = (DATA_BL *)(hp->bh_data); | |
| 3426 idx = lnum - buf->b_ml.ml_locked_low; | |
| 3427 start = ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 3428 old_line = (char_u *)dp + start; | |
| 3429 if (idx == 0) /* line is last in block */ | |
| 3430 old_len = dp->db_txt_end - start; | |
| 3431 else /* text of previous line follows */ | |
| 3432 old_len = (dp->db_index[idx - 1] & DB_INDEX_MASK) - start; | |
| 3433 new_len = (colnr_T)STRLEN(new_line) + 1; | |
| 3434 extra = new_len - old_len; /* negative if lines gets smaller */ | |
| 3435 | |
| 3436 /* | |
| 3437 * if new line fits in data block, replace directly | |
| 3438 */ | |
| 3439 if ((int)dp->db_free >= extra) | |
| 3440 { | |
| 3441 /* if the length changes and there are following lines */ | |
| 3442 count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low + 1; | |
| 3443 if (extra != 0 && idx < count - 1) | |
| 3444 { | |
| 3445 /* move text of following lines */ | |
| 3446 mch_memmove((char *)dp + dp->db_txt_start - extra, | |
| 3447 (char *)dp + dp->db_txt_start, | |
| 3448 (size_t)(start - dp->db_txt_start)); | |
| 3449 | |
| 3450 /* adjust pointers of this and following lines */ | |
| 3451 for (i = idx + 1; i < count; ++i) | |
| 3452 dp->db_index[i] -= extra; | |
| 3453 } | |
| 3454 dp->db_index[idx] -= extra; | |
| 3455 | |
| 3456 /* adjust free space */ | |
| 3457 dp->db_free -= extra; | |
| 3458 dp->db_txt_start -= extra; | |
| 3459 | |
| 3460 /* copy new line into the data block */ | |
| 3461 mch_memmove(old_line - extra, new_line, (size_t)new_len); | |
| 3462 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 3463 #ifdef FEAT_BYTEOFF | |
| 3464 /* The else case is already covered by the insert and delete */ | |
| 3465 ml_updatechunk(buf, lnum, (long)extra, ML_CHNK_UPDLINE); | |
| 3466 #endif | |
| 3467 } | |
| 3468 else | |
| 3469 { | |
| 3470 /* | |
| 3471 * Cannot do it in one data block: Delete and append. | |
| 3472 * Append first, because ml_delete_int() cannot delete the | |
| 3473 * last line in a buffer, which causes trouble for a buffer | |
| 3474 * that has only one line. | |
| 3475 * Don't forget to copy the mark! | |
| 3476 */ | |
| 3477 /* How about handling errors??? */ | |
| 3478 (void)ml_append_int(buf, lnum, new_line, new_len, FALSE, | |
| 3479 (dp->db_index[idx] & DB_MARKED)); | |
| 3480 (void)ml_delete_int(buf, lnum, FALSE); | |
| 3481 } | |
| 3482 } | |
| 3483 vim_free(new_line); | |
|
2075
903fcd726d90
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diff
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|
3484 |
|
903fcd726d90
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parents:
2003
diff
changeset
|
3485 entered = FALSE; |
| 7 | 3486 } |
| 3487 | |
| 3488 buf->b_ml.ml_line_lnum = 0; | |
| 3489 } | |
| 3490 | |
| 3491 /* | |
| 3492 * create a new, empty, data block | |
| 3493 */ | |
| 3494 static bhdr_T * | |
| 3495 ml_new_data(mfp, negative, page_count) | |
| 3496 memfile_T *mfp; | |
| 3497 int negative; | |
| 3498 int page_count; | |
| 3499 { | |
| 3500 bhdr_T *hp; | |
| 3501 DATA_BL *dp; | |
| 3502 | |
| 3503 if ((hp = mf_new(mfp, negative, page_count)) == NULL) | |
| 3504 return NULL; | |
| 3505 | |
| 3506 dp = (DATA_BL *)(hp->bh_data); | |
| 3507 dp->db_id = DATA_ID; | |
| 3508 dp->db_txt_start = dp->db_txt_end = page_count * mfp->mf_page_size; | |
| 3509 dp->db_free = dp->db_txt_start - HEADER_SIZE; | |
| 3510 dp->db_line_count = 0; | |
| 3511 | |
| 3512 return hp; | |
| 3513 } | |
| 3514 | |
| 3515 /* | |
| 3516 * create a new, empty, pointer block | |
| 3517 */ | |
| 3518 static bhdr_T * | |
| 3519 ml_new_ptr(mfp) | |
| 3520 memfile_T *mfp; | |
| 3521 { | |
| 3522 bhdr_T *hp; | |
| 3523 PTR_BL *pp; | |
| 3524 | |
| 3525 if ((hp = mf_new(mfp, FALSE, 1)) == NULL) | |
| 3526 return NULL; | |
| 3527 | |
| 3528 pp = (PTR_BL *)(hp->bh_data); | |
| 3529 pp->pb_id = PTR_ID; | |
| 3530 pp->pb_count = 0; | |
|
2240
6b4879aea261
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Bram Moolenaar <bram@vim.org>
parents:
2221
diff
changeset
|
3531 pp->pb_count_max = (short_u)((mfp->mf_page_size - sizeof(PTR_BL)) |
|
6b4879aea261
Add test for gettabvar() and settabvar().
Bram Moolenaar <bram@vim.org>
parents:
2221
diff
changeset
|
3532 / sizeof(PTR_EN) + 1); |
| 7 | 3533 |
| 3534 return hp; | |
| 3535 } | |
| 3536 | |
| 3537 /* | |
| 3538 * lookup line 'lnum' in a memline | |
| 3539 * | |
| 3540 * action: if ML_DELETE or ML_INSERT the line count is updated while searching | |
| 3541 * if ML_FLUSH only flush a locked block | |
| 3542 * if ML_FIND just find the line | |
| 3543 * | |
| 3544 * If the block was found it is locked and put in ml_locked. | |
| 3545 * The stack is updated to lead to the locked block. The ip_high field in | |
| 3546 * the stack is updated to reflect the last line in the block AFTER the | |
| 3547 * insert or delete, also if the pointer block has not been updated yet. But | |
| 1167 | 3548 * if ml_locked != NULL ml_locked_lineadd must be added to ip_high. |
| 7 | 3549 * |
| 3550 * return: NULL for failure, pointer to block header otherwise | |
| 3551 */ | |
| 3552 static bhdr_T * | |
| 3553 ml_find_line(buf, lnum, action) | |
| 3554 buf_T *buf; | |
| 3555 linenr_T lnum; | |
| 3556 int action; | |
| 3557 { | |
| 3558 DATA_BL *dp; | |
| 3559 PTR_BL *pp; | |
| 3560 infoptr_T *ip; | |
| 3561 bhdr_T *hp; | |
| 3562 memfile_T *mfp; | |
| 3563 linenr_T t; | |
| 3564 blocknr_T bnum, bnum2; | |
| 3565 int dirty; | |
| 3566 linenr_T low, high; | |
| 3567 int top; | |
| 3568 int page_count; | |
| 3569 int idx; | |
| 3570 | |
| 3571 mfp = buf->b_ml.ml_mfp; | |
| 3572 | |
| 3573 /* | |
| 3574 * If there is a locked block check if the wanted line is in it. | |
| 3575 * If not, flush and release the locked block. | |
| 3576 * Don't do this for ML_INSERT_SAME, because the stack need to be updated. | |
| 3577 * Don't do this for ML_FLUSH, because we want to flush the locked block. | |
| 1066 | 3578 * Don't do this when 'swapfile' is reset, we want to load all the blocks. |
| 7 | 3579 */ |
| 3580 if (buf->b_ml.ml_locked) | |
| 3581 { | |
| 1066 | 3582 if (ML_SIMPLE(action) |
| 3583 && buf->b_ml.ml_locked_low <= lnum | |
| 3584 && buf->b_ml.ml_locked_high >= lnum | |
| 3585 && !mf_dont_release) | |
| 7 | 3586 { |
| 1066 | 3587 /* remember to update pointer blocks and stack later */ |
| 7 | 3588 if (action == ML_INSERT) |
| 3589 { | |
| 3590 ++(buf->b_ml.ml_locked_lineadd); | |
| 3591 ++(buf->b_ml.ml_locked_high); | |
| 3592 } | |
| 3593 else if (action == ML_DELETE) | |
| 3594 { | |
| 3595 --(buf->b_ml.ml_locked_lineadd); | |
| 3596 --(buf->b_ml.ml_locked_high); | |
| 3597 } | |
| 3598 return (buf->b_ml.ml_locked); | |
| 3599 } | |
| 3600 | |
| 3601 mf_put(mfp, buf->b_ml.ml_locked, buf->b_ml.ml_flags & ML_LOCKED_DIRTY, | |
| 3602 buf->b_ml.ml_flags & ML_LOCKED_POS); | |
| 3603 buf->b_ml.ml_locked = NULL; | |
| 3604 | |
| 1167 | 3605 /* |
| 3606 * If lines have been added or deleted in the locked block, need to | |
| 3607 * update the line count in pointer blocks. | |
| 3608 */ | |
| 3609 if (buf->b_ml.ml_locked_lineadd != 0) | |
| 7 | 3610 ml_lineadd(buf, buf->b_ml.ml_locked_lineadd); |
| 3611 } | |
| 3612 | |
| 3613 if (action == ML_FLUSH) /* nothing else to do */ | |
| 3614 return NULL; | |
| 3615 | |
| 3616 bnum = 1; /* start at the root of the tree */ | |
| 3617 page_count = 1; | |
| 3618 low = 1; | |
| 3619 high = buf->b_ml.ml_line_count; | |
| 3620 | |
| 3621 if (action == ML_FIND) /* first try stack entries */ | |
| 3622 { | |
| 3623 for (top = buf->b_ml.ml_stack_top - 1; top >= 0; --top) | |
| 3624 { | |
| 3625 ip = &(buf->b_ml.ml_stack[top]); | |
| 3626 if (ip->ip_low <= lnum && ip->ip_high >= lnum) | |
| 3627 { | |
| 3628 bnum = ip->ip_bnum; | |
| 3629 low = ip->ip_low; | |
| 3630 high = ip->ip_high; | |
| 3631 buf->b_ml.ml_stack_top = top; /* truncate stack at prev entry */ | |
| 3632 break; | |
| 3633 } | |
| 3634 } | |
| 3635 if (top < 0) | |
| 3636 buf->b_ml.ml_stack_top = 0; /* not found, start at the root */ | |
| 3637 } | |
| 3638 else /* ML_DELETE or ML_INSERT */ | |
| 3639 buf->b_ml.ml_stack_top = 0; /* start at the root */ | |
| 3640 | |
| 3641 /* | |
| 3642 * search downwards in the tree until a data block is found | |
| 3643 */ | |
| 3644 for (;;) | |
| 3645 { | |
| 3646 if ((hp = mf_get(mfp, bnum, page_count)) == NULL) | |
| 3647 goto error_noblock; | |
| 3648 | |
| 3649 /* | |
| 3650 * update high for insert/delete | |
| 3651 */ | |
| 3652 if (action == ML_INSERT) | |
| 3653 ++high; | |
| 3654 else if (action == ML_DELETE) | |
| 3655 --high; | |
| 3656 | |
| 3657 dp = (DATA_BL *)(hp->bh_data); | |
| 3658 if (dp->db_id == DATA_ID) /* data block */ | |
| 3659 { | |
| 3660 buf->b_ml.ml_locked = hp; | |
| 3661 buf->b_ml.ml_locked_low = low; | |
| 3662 buf->b_ml.ml_locked_high = high; | |
| 3663 buf->b_ml.ml_locked_lineadd = 0; | |
| 3664 buf->b_ml.ml_flags &= ~(ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 3665 return hp; | |
| 3666 } | |
| 3667 | |
| 3668 pp = (PTR_BL *)(dp); /* must be pointer block */ | |
| 3669 if (pp->pb_id != PTR_ID) | |
| 3670 { | |
| 3671 EMSG(_("E317: pointer block id wrong")); | |
| 3672 goto error_block; | |
| 3673 } | |
| 3674 | |
| 3675 if ((top = ml_add_stack(buf)) < 0) /* add new entry to stack */ | |
| 3676 goto error_block; | |
| 3677 ip = &(buf->b_ml.ml_stack[top]); | |
| 3678 ip->ip_bnum = bnum; | |
| 3679 ip->ip_low = low; | |
| 3680 ip->ip_high = high; | |
| 3681 ip->ip_index = -1; /* index not known yet */ | |
| 3682 | |
| 3683 dirty = FALSE; | |
| 3684 for (idx = 0; idx < (int)pp->pb_count; ++idx) | |
| 3685 { | |
| 3686 t = pp->pb_pointer[idx].pe_line_count; | |
| 3687 CHECK(t == 0, _("pe_line_count is zero")); | |
| 3688 if ((low += t) > lnum) | |
| 3689 { | |
| 3690 ip->ip_index = idx; | |
| 3691 bnum = pp->pb_pointer[idx].pe_bnum; | |
| 3692 page_count = pp->pb_pointer[idx].pe_page_count; | |
| 3693 high = low - 1; | |
| 3694 low -= t; | |
| 3695 | |
| 3696 /* | |
| 3697 * a negative block number may have been changed | |
| 3698 */ | |
| 3699 if (bnum < 0) | |
| 3700 { | |
| 3701 bnum2 = mf_trans_del(mfp, bnum); | |
| 3702 if (bnum != bnum2) | |
| 3703 { | |
| 3704 bnum = bnum2; | |
| 3705 pp->pb_pointer[idx].pe_bnum = bnum; | |
| 3706 dirty = TRUE; | |
| 3707 } | |
| 3708 } | |
| 3709 | |
| 3710 break; | |
| 3711 } | |
| 3712 } | |
| 3713 if (idx >= (int)pp->pb_count) /* past the end: something wrong! */ | |
| 3714 { | |
| 3715 if (lnum > buf->b_ml.ml_line_count) | |
| 3716 EMSGN(_("E322: line number out of range: %ld past the end"), | |
| 3717 lnum - buf->b_ml.ml_line_count); | |
| 3718 | |
| 3719 else | |
| 3720 EMSGN(_("E323: line count wrong in block %ld"), bnum); | |
| 3721 goto error_block; | |
| 3722 } | |
| 3723 if (action == ML_DELETE) | |
| 3724 { | |
| 3725 pp->pb_pointer[idx].pe_line_count--; | |
| 3726 dirty = TRUE; | |
| 3727 } | |
| 3728 else if (action == ML_INSERT) | |
| 3729 { | |
| 3730 pp->pb_pointer[idx].pe_line_count++; | |
| 3731 dirty = TRUE; | |
| 3732 } | |
| 3733 mf_put(mfp, hp, dirty, FALSE); | |
| 3734 } | |
| 3735 | |
| 3736 error_block: | |
| 3737 mf_put(mfp, hp, FALSE, FALSE); | |
| 3738 error_noblock: | |
| 2267 | 3739 /* |
| 3740 * If action is ML_DELETE or ML_INSERT we have to correct the tree for | |
| 3741 * the incremented/decremented line counts, because there won't be a line | |
| 3742 * inserted/deleted after all. | |
| 3743 */ | |
| 7 | 3744 if (action == ML_DELETE) |
| 3745 ml_lineadd(buf, 1); | |
| 3746 else if (action == ML_INSERT) | |
| 3747 ml_lineadd(buf, -1); | |
| 3748 buf->b_ml.ml_stack_top = 0; | |
| 3749 return NULL; | |
| 3750 } | |
| 3751 | |
| 3752 /* | |
| 3753 * add an entry to the info pointer stack | |
| 3754 * | |
| 3755 * return -1 for failure, number of the new entry otherwise | |
| 3756 */ | |
| 3757 static int | |
| 3758 ml_add_stack(buf) | |
| 3759 buf_T *buf; | |
| 3760 { | |
| 3761 int top; | |
| 3762 infoptr_T *newstack; | |
| 3763 | |
| 3764 top = buf->b_ml.ml_stack_top; | |
| 3765 | |
| 2267 | 3766 /* may have to increase the stack size */ |
| 7 | 3767 if (top == buf->b_ml.ml_stack_size) |
| 3768 { | |
| 2267 | 3769 CHECK(top > 0, _("Stack size increases")); /* more than 5 levels??? */ |
| 7 | 3770 |
| 3771 newstack = (infoptr_T *)alloc((unsigned)sizeof(infoptr_T) * | |
| 3772 (buf->b_ml.ml_stack_size + STACK_INCR)); | |
| 3773 if (newstack == NULL) | |
| 3774 return -1; | |
| 1624 | 3775 mch_memmove(newstack, buf->b_ml.ml_stack, |
| 3776 (size_t)top * sizeof(infoptr_T)); | |
| 7 | 3777 vim_free(buf->b_ml.ml_stack); |
| 3778 buf->b_ml.ml_stack = newstack; | |
| 3779 buf->b_ml.ml_stack_size += STACK_INCR; | |
| 3780 } | |
| 3781 | |
| 3782 buf->b_ml.ml_stack_top++; | |
| 3783 return top; | |
| 3784 } | |
| 3785 | |
| 3786 /* | |
| 3787 * Update the pointer blocks on the stack for inserted/deleted lines. | |
| 3788 * The stack itself is also updated. | |
| 3789 * | |
| 3790 * When a insert/delete line action fails, the line is not inserted/deleted, | |
| 3791 * but the pointer blocks have already been updated. That is fixed here by | |
| 3792 * walking through the stack. | |
| 3793 * | |
| 3794 * Count is the number of lines added, negative if lines have been deleted. | |
| 3795 */ | |
| 3796 static void | |
| 3797 ml_lineadd(buf, count) | |
| 3798 buf_T *buf; | |
| 3799 int count; | |
| 3800 { | |
| 3801 int idx; | |
| 3802 infoptr_T *ip; | |
| 3803 PTR_BL *pp; | |
| 3804 memfile_T *mfp = buf->b_ml.ml_mfp; | |
| 3805 bhdr_T *hp; | |
| 3806 | |
| 3807 for (idx = buf->b_ml.ml_stack_top - 1; idx >= 0; --idx) | |
| 3808 { | |
| 3809 ip = &(buf->b_ml.ml_stack[idx]); | |
| 3810 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
| 3811 break; | |
| 3812 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
| 3813 if (pp->pb_id != PTR_ID) | |
| 3814 { | |
| 3815 mf_put(mfp, hp, FALSE, FALSE); | |
| 3816 EMSG(_("E317: pointer block id wrong 2")); | |
| 3817 break; | |
| 3818 } | |
| 3819 pp->pb_pointer[ip->ip_index].pe_line_count += count; | |
| 3820 ip->ip_high += count; | |
| 3821 mf_put(mfp, hp, TRUE, FALSE); | |
| 3822 } | |
| 3823 } | |
| 3824 | |
|
2214
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
3825 #if defined(HAVE_READLINK) || defined(PROTO) |
| 594 | 3826 /* |
| 3827 * Resolve a symlink in the last component of a file name. | |
| 3828 * Note that f_resolve() does it for every part of the path, we don't do that | |
| 3829 * here. | |
| 3830 * If it worked returns OK and the resolved link in "buf[MAXPATHL]". | |
| 3831 * Otherwise returns FAIL. | |
| 3832 */ | |
|
2214
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
3833 int |
| 594 | 3834 resolve_symlink(fname, buf) |
| 3835 char_u *fname; | |
| 3836 char_u *buf; | |
| 3837 { | |
| 3838 char_u tmp[MAXPATHL]; | |
| 3839 int ret; | |
| 3840 int depth = 0; | |
| 3841 | |
| 3842 if (fname == NULL) | |
| 3843 return FAIL; | |
| 3844 | |
| 3845 /* Put the result so far in tmp[], starting with the original name. */ | |
| 3846 vim_strncpy(tmp, fname, MAXPATHL - 1); | |
| 3847 | |
| 3848 for (;;) | |
| 3849 { | |
| 3850 /* Limit symlink depth to 100, catch recursive loops. */ | |
| 3851 if (++depth == 100) | |
| 3852 { | |
| 3853 EMSG2(_("E773: Symlink loop for \"%s\""), fname); | |
| 3854 return FAIL; | |
| 3855 } | |
| 3856 | |
| 3857 ret = readlink((char *)tmp, (char *)buf, MAXPATHL - 1); | |
| 3858 if (ret <= 0) | |
| 3859 { | |
| 619 | 3860 if (errno == EINVAL || errno == ENOENT) |
| 594 | 3861 { |
| 619 | 3862 /* Found non-symlink or not existing file, stop here. |
| 1855 | 3863 * When at the first level use the unmodified name, skip the |
| 594 | 3864 * call to vim_FullName(). */ |
| 3865 if (depth == 1) | |
| 3866 return FAIL; | |
| 3867 | |
| 3868 /* Use the resolved name in tmp[]. */ | |
| 3869 break; | |
| 3870 } | |
| 3871 | |
| 3872 /* There must be some error reading links, use original name. */ | |
| 3873 return FAIL; | |
| 3874 } | |
| 3875 buf[ret] = NUL; | |
| 3876 | |
| 3877 /* | |
| 3878 * Check whether the symlink is relative or absolute. | |
| 3879 * If it's relative, build a new path based on the directory | |
| 3880 * portion of the filename (if any) and the path the symlink | |
| 3881 * points to. | |
| 3882 */ | |
| 3883 if (mch_isFullName(buf)) | |
| 3884 STRCPY(tmp, buf); | |
| 3885 else | |
| 3886 { | |
| 3887 char_u *tail; | |
| 3888 | |
| 3889 tail = gettail(tmp); | |
| 3890 if (STRLEN(tail) + STRLEN(buf) >= MAXPATHL) | |
| 3891 return FAIL; | |
| 3892 STRCPY(tail, buf); | |
| 3893 } | |
| 3894 } | |
| 3895 | |
| 3896 /* | |
| 3897 * Try to resolve the full name of the file so that the swapfile name will | |
| 3898 * be consistent even when opening a relative symlink from different | |
| 3899 * working directories. | |
| 3900 */ | |
| 3901 return vim_FullName(tmp, buf, MAXPATHL, TRUE); | |
| 3902 } | |
| 3903 #endif | |
| 3904 | |
| 7 | 3905 /* |
| 460 | 3906 * Make swap file name out of the file name and a directory name. |
| 3907 * Returns pointer to allocated memory or NULL. | |
| 7 | 3908 */ |
| 460 | 3909 char_u * |
| 3910 makeswapname(fname, ffname, buf, dir_name) | |
| 3911 char_u *fname; | |
| 1978 | 3912 char_u *ffname UNUSED; |
| 7 | 3913 buf_T *buf; |
| 3914 char_u *dir_name; | |
| 3915 { | |
| 3916 char_u *r, *s; | |
|
2145
de0e7ca61893
updated for version 7.2.427
Bram Moolenaar <bram@zimbu.org>
parents:
2108
diff
changeset
|
3917 char_u *fname_res = fname; |
| 594 | 3918 #ifdef HAVE_READLINK |
| 3919 char_u fname_buf[MAXPATHL]; | |
| 3920 #endif | |
| 7 | 3921 |
| 3922 #if defined(UNIX) || defined(WIN3264) /* Need _very_ long file names */ | |
| 3923 s = dir_name + STRLEN(dir_name); | |
| 39 | 3924 if (after_pathsep(dir_name, s) && s[-1] == s[-2]) |
| 7 | 3925 { /* Ends with '//', Use Full path */ |
| 3926 r = NULL; | |
| 460 | 3927 if ((s = make_percent_swname(dir_name, fname)) != NULL) |
| 7 | 3928 { |
| 3929 r = modname(s, (char_u *)".swp", FALSE); | |
| 3930 vim_free(s); | |
| 3931 } | |
| 3932 return r; | |
| 3933 } | |
| 3934 #endif | |
| 3935 | |
| 594 | 3936 #ifdef HAVE_READLINK |
| 3937 /* Expand symlink in the file name, so that we put the swap file with the | |
| 3938 * actual file instead of with the symlink. */ | |
| 3939 if (resolve_symlink(fname, fname_buf) == OK) | |
| 3940 fname_res = fname_buf; | |
| 3941 #endif | |
| 3942 | |
| 7 | 3943 r = buf_modname( |
| 3944 #ifdef SHORT_FNAME | |
| 3945 TRUE, | |
| 3946 #else | |
| 3947 (buf->b_p_sn || buf->b_shortname), | |
| 3948 #endif | |
| 594 | 3949 fname_res, |
| 7 | 3950 (char_u *) |
| 2823 | 3951 #if defined(VMS) |
| 7 | 3952 "_swp", |
| 3953 #else | |
| 3954 ".swp", | |
| 3955 #endif | |
| 3956 #ifdef SHORT_FNAME /* always 8.3 file name */ | |
| 3957 FALSE | |
| 3958 #else | |
| 3959 /* Prepend a '.' to the swap file name for the current directory. */ | |
| 3960 dir_name[0] == '.' && dir_name[1] == NUL | |
| 3961 #endif | |
| 3962 ); | |
| 3963 if (r == NULL) /* out of memory */ | |
| 3964 return NULL; | |
| 3965 | |
| 3966 s = get_file_in_dir(r, dir_name); | |
| 3967 vim_free(r); | |
| 3968 return s; | |
| 3969 } | |
| 3970 | |
| 3971 /* | |
| 3972 * Get file name to use for swap file or backup file. | |
| 3973 * Use the name of the edited file "fname" and an entry in the 'dir' or 'bdir' | |
| 3974 * option "dname". | |
| 3975 * - If "dname" is ".", return "fname" (swap file in dir of file). | |
| 3976 * - If "dname" starts with "./", insert "dname" in "fname" (swap file | |
| 3977 * relative to dir of file). | |
| 3978 * - Otherwise, prepend "dname" to the tail of "fname" (swap file in specific | |
| 3979 * dir). | |
| 3980 * | |
| 3981 * The return value is an allocated string and can be NULL. | |
| 3982 */ | |
| 3983 char_u * | |
| 3984 get_file_in_dir(fname, dname) | |
| 3985 char_u *fname; | |
| 3986 char_u *dname; /* don't use "dirname", it is a global for Alpha */ | |
| 3987 { | |
| 3988 char_u *t; | |
| 3989 char_u *tail; | |
| 3990 char_u *retval; | |
| 3991 int save_char; | |
| 3992 | |
| 3993 tail = gettail(fname); | |
| 3994 | |
| 3995 if (dname[0] == '.' && dname[1] == NUL) | |
| 3996 retval = vim_strsave(fname); | |
| 3997 else if (dname[0] == '.' && vim_ispathsep(dname[1])) | |
| 3998 { | |
| 3999 if (tail == fname) /* no path before file name */ | |
| 4000 retval = concat_fnames(dname + 2, tail, TRUE); | |
| 4001 else | |
| 4002 { | |
| 4003 save_char = *tail; | |
| 4004 *tail = NUL; | |
| 4005 t = concat_fnames(fname, dname + 2, TRUE); | |
| 4006 *tail = save_char; | |
| 4007 if (t == NULL) /* out of memory */ | |
| 4008 retval = NULL; | |
| 4009 else | |
| 4010 { | |
| 4011 retval = concat_fnames(t, tail, TRUE); | |
| 4012 vim_free(t); | |
| 4013 } | |
| 4014 } | |
| 4015 } | |
| 4016 else | |
| 4017 retval = concat_fnames(dname, tail, TRUE); | |
| 4018 | |
| 4019 return retval; | |
| 4020 } | |
| 4021 | |
| 580 | 4022 static void attention_message __ARGS((buf_T *buf, char_u *fname)); |
| 4023 | |
| 4024 /* | |
| 4025 * Print the ATTENTION message: info about an existing swap file. | |
| 4026 */ | |
| 4027 static void | |
| 4028 attention_message(buf, fname) | |
| 4029 buf_T *buf; /* buffer being edited */ | |
| 4030 char_u *fname; /* swap file name */ | |
| 4031 { | |
| 4032 struct stat st; | |
| 4033 time_t x, sx; | |
| 1001 | 4034 char *p; |
| 580 | 4035 |
| 4036 ++no_wait_return; | |
| 4037 (void)EMSG(_("E325: ATTENTION")); | |
| 4038 MSG_PUTS(_("\nFound a swap file by the name \"")); | |
| 4039 msg_home_replace(fname); | |
| 4040 MSG_PUTS("\"\n"); | |
| 4041 sx = swapfile_info(fname); | |
| 4042 MSG_PUTS(_("While opening file \"")); | |
| 4043 msg_outtrans(buf->b_fname); | |
| 4044 MSG_PUTS("\"\n"); | |
| 4045 if (mch_stat((char *)buf->b_fname, &st) != -1) | |
| 4046 { | |
| 4047 MSG_PUTS(_(" dated: ")); | |
| 4048 x = st.st_mtime; /* Manx C can't do &st.st_mtime */ | |
| 1001 | 4049 p = ctime(&x); /* includes '\n' */ |
| 4050 if (p == NULL) | |
| 4051 MSG_PUTS("(invalid)\n"); | |
| 4052 else | |
| 4053 MSG_PUTS(p); | |
| 580 | 4054 if (sx != 0 && x > sx) |
| 4055 MSG_PUTS(_(" NEWER than swap file!\n")); | |
| 4056 } | |
| 4057 /* Some of these messages are long to allow translation to | |
| 4058 * other languages. */ | |
| 2703 | 4059 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.")); |
| 4060 MSG_PUTS(_(" Quit, or continue with caution.\n")); | |
| 4061 MSG_PUTS(_("(2) An edit session for this file crashed.\n")); | |
| 580 | 4062 MSG_PUTS(_(" If this is the case, use \":recover\" or \"vim -r ")); |
| 4063 msg_outtrans(buf->b_fname); | |
| 4064 MSG_PUTS(_("\"\n to recover the changes (see \":help recovery\").\n")); | |
| 4065 MSG_PUTS(_(" If you did this already, delete the swap file \"")); | |
| 4066 msg_outtrans(fname); | |
| 4067 MSG_PUTS(_("\"\n to avoid this message.\n")); | |
| 4068 cmdline_row = msg_row; | |
| 4069 --no_wait_return; | |
| 4070 } | |
| 4071 | |
| 4072 #ifdef FEAT_AUTOCMD | |
| 4073 static int do_swapexists __ARGS((buf_T *buf, char_u *fname)); | |
| 4074 | |
| 4075 /* | |
| 4076 * Trigger the SwapExists autocommands. | |
| 4077 * Returns a value for equivalent to do_dialog() (see below): | |
| 4078 * 0: still need to ask for a choice | |
| 4079 * 1: open read-only | |
| 4080 * 2: edit anyway | |
| 4081 * 3: recover | |
| 4082 * 4: delete it | |
| 4083 * 5: quit | |
| 4084 * 6: abort | |
| 4085 */ | |
| 4086 static int | |
| 4087 do_swapexists(buf, fname) | |
| 4088 buf_T *buf; | |
| 4089 char_u *fname; | |
| 4090 { | |
| 4091 set_vim_var_string(VV_SWAPNAME, fname, -1); | |
| 4092 set_vim_var_string(VV_SWAPCHOICE, NULL, -1); | |
| 4093 | |
| 4094 /* Trigger SwapExists autocommands with <afile> set to the file being | |
| 1856 | 4095 * edited. Disallow changing directory here. */ |
| 4096 ++allbuf_lock; | |
| 580 | 4097 apply_autocmds(EVENT_SWAPEXISTS, buf->b_fname, NULL, FALSE, NULL); |
| 1856 | 4098 --allbuf_lock; |
| 580 | 4099 |
| 4100 set_vim_var_string(VV_SWAPNAME, NULL, -1); | |
| 4101 | |
| 4102 switch (*get_vim_var_str(VV_SWAPCHOICE)) | |
| 4103 { | |
| 4104 case 'o': return 1; | |
| 4105 case 'e': return 2; | |
| 4106 case 'r': return 3; | |
| 4107 case 'd': return 4; | |
| 4108 case 'q': return 5; | |
| 4109 case 'a': return 6; | |
| 4110 } | |
| 4111 | |
| 4112 return 0; | |
| 4113 } | |
| 4114 #endif | |
| 4115 | |
| 7 | 4116 /* |
| 4117 * Find out what name to use for the swap file for buffer 'buf'. | |
| 4118 * | |
| 4119 * Several names are tried to find one that does not exist | |
| 460 | 4120 * Returns the name in allocated memory or NULL. |
| 3158 | 4121 * When out of memory "dirp" is set to NULL. |
| 7 | 4122 * |
| 4123 * 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
|
4124 * not being able to open the swap or undo file |
| 1856 | 4125 * Note: May trigger SwapExists autocmd, pointers may change! |
| 7 | 4126 */ |
| 4127 static char_u * | |
| 4128 findswapname(buf, dirp, old_fname) | |
| 4129 buf_T *buf; | |
| 4130 char_u **dirp; /* pointer to list of directories */ | |
| 4131 char_u *old_fname; /* don't give warning for this file name */ | |
| 4132 { | |
| 4133 char_u *fname; | |
| 4134 int n; | |
| 4135 char_u *dir_name; | |
| 4136 #ifdef AMIGA | |
| 4137 BPTR fh; | |
| 4138 #endif | |
| 4139 #ifndef SHORT_FNAME | |
| 4140 int r; | |
| 4141 #endif | |
| 4142 | |
| 4143 #if !defined(SHORT_FNAME) \ | |
| 4144 && ((!defined(UNIX) && !defined(OS2)) || defined(ARCHIE)) | |
| 4145 # define CREATE_DUMMY_FILE | |
| 4146 FILE *dummyfd = NULL; | |
| 4147 | |
|
2214
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4148 /* |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4149 * 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
|
4150 * 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
|
4151 * "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
|
4152 * 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
|
4153 * 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
|
4154 */ |
| 7 | 4155 if (!(buf->b_p_sn || buf->b_shortname) && buf->b_fname != NULL |
| 4156 && mch_getperm(buf->b_fname) < 0) | |
| 4157 dummyfd = mch_fopen((char *)buf->b_fname, "w"); | |
| 4158 #endif | |
| 4159 | |
|
2214
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4160 /* |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4161 * 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
|
4162 * 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
|
4163 */ |
| 7 | 4164 dir_name = alloc((unsigned)STRLEN(*dirp) + 1); |
| 3158 | 4165 if (dir_name == NULL) |
| 4166 *dirp = NULL; | |
| 4167 else | |
| 7 | 4168 (void)copy_option_part(dirp, dir_name, 31000, ","); |
| 4169 | |
|
2214
f8222d1f9a73
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 * 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
|
4172 */ |
| 7 | 4173 if (dir_name == NULL) /* out of memory */ |
| 4174 fname = NULL; | |
| 4175 else | |
| 460 | 4176 fname = makeswapname(buf->b_fname, buf->b_ffname, buf, dir_name); |
| 7 | 4177 |
| 4178 for (;;) | |
| 4179 { | |
| 4180 if (fname == NULL) /* must be out of memory */ | |
| 4181 break; | |
| 4182 if ((n = (int)STRLEN(fname)) == 0) /* safety check */ | |
| 4183 { | |
| 4184 vim_free(fname); | |
| 4185 fname = NULL; | |
| 4186 break; | |
| 4187 } | |
| 4188 #if (defined(UNIX) || defined(OS2)) && !defined(ARCHIE) && !defined(SHORT_FNAME) | |
| 4189 /* | |
| 4190 * Some systems have a MS-DOS compatible filesystem that use 8.3 character | |
| 4191 * file names. If this is the first try and the swap file name does not fit in | |
| 4192 * 8.3, detect if this is the case, set shortname and try again. | |
| 4193 */ | |
| 4194 if (fname[n - 2] == 'w' && fname[n - 1] == 'p' | |
| 4195 && !(buf->b_p_sn || buf->b_shortname)) | |
| 4196 { | |
| 4197 char_u *tail; | |
| 4198 char_u *fname2; | |
| 4199 struct stat s1, s2; | |
| 4200 int f1, f2; | |
| 4201 int created1 = FALSE, created2 = FALSE; | |
| 4202 int same = FALSE; | |
| 4203 | |
| 4204 /* | |
| 4205 * Check if swapfile name does not fit in 8.3: | |
| 4206 * It either contains two dots, is longer than 8 chars, or starts | |
| 4207 * with a dot. | |
| 4208 */ | |
| 4209 tail = gettail(buf->b_fname); | |
| 4210 if ( vim_strchr(tail, '.') != NULL | |
| 4211 || STRLEN(tail) > (size_t)8 | |
| 4212 || *gettail(fname) == '.') | |
| 4213 { | |
| 4214 fname2 = alloc(n + 2); | |
| 4215 if (fname2 != NULL) | |
| 4216 { | |
| 4217 STRCPY(fname2, fname); | |
| 4218 /* if fname == "xx.xx.swp", fname2 = "xx.xx.swx" | |
| 4219 * if fname == ".xx.swp", fname2 = ".xx.swpx" | |
| 4220 * if fname == "123456789.swp", fname2 = "12345678x.swp" | |
| 4221 */ | |
| 4222 if (vim_strchr(tail, '.') != NULL) | |
| 4223 fname2[n - 1] = 'x'; | |
| 4224 else if (*gettail(fname) == '.') | |
| 4225 { | |
| 4226 fname2[n] = 'x'; | |
| 4227 fname2[n + 1] = NUL; | |
| 4228 } | |
| 4229 else | |
| 4230 fname2[n - 5] += 1; | |
| 4231 /* | |
| 4232 * may need to create the files to be able to use mch_stat() | |
| 4233 */ | |
| 4234 f1 = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
| 4235 if (f1 < 0) | |
| 4236 { | |
| 4237 f1 = mch_open_rw((char *)fname, | |
| 4238 O_RDWR|O_CREAT|O_EXCL|O_EXTRA); | |
| 4239 #if defined(OS2) | |
| 4240 if (f1 < 0 && errno == ENOENT) | |
| 4241 same = TRUE; | |
| 4242 #endif | |
| 4243 created1 = TRUE; | |
| 4244 } | |
| 4245 if (f1 >= 0) | |
| 4246 { | |
| 4247 f2 = mch_open((char *)fname2, O_RDONLY | O_EXTRA, 0); | |
| 4248 if (f2 < 0) | |
| 4249 { | |
| 4250 f2 = mch_open_rw((char *)fname2, | |
| 4251 O_RDWR|O_CREAT|O_EXCL|O_EXTRA); | |
| 4252 created2 = TRUE; | |
| 4253 } | |
| 4254 if (f2 >= 0) | |
| 4255 { | |
| 4256 /* | |
| 4257 * Both files exist now. If mch_stat() returns the | |
| 4258 * same device and inode they are the same file. | |
| 4259 */ | |
| 4260 if (mch_fstat(f1, &s1) != -1 | |
| 4261 && mch_fstat(f2, &s2) != -1 | |
| 4262 && s1.st_dev == s2.st_dev | |
| 4263 && s1.st_ino == s2.st_ino) | |
| 4264 same = TRUE; | |
| 4265 close(f2); | |
| 4266 if (created2) | |
| 4267 mch_remove(fname2); | |
| 4268 } | |
| 4269 close(f1); | |
| 4270 if (created1) | |
| 4271 mch_remove(fname); | |
| 4272 } | |
| 4273 vim_free(fname2); | |
| 4274 if (same) | |
| 4275 { | |
| 4276 buf->b_shortname = TRUE; | |
| 4277 vim_free(fname); | |
| 460 | 4278 fname = makeswapname(buf->b_fname, buf->b_ffname, |
| 4279 buf, dir_name); | |
| 7 | 4280 continue; /* try again with b_shortname set */ |
| 4281 } | |
| 4282 } | |
| 4283 } | |
| 4284 } | |
| 4285 #endif | |
| 4286 /* | |
| 4287 * check if the swapfile already exists | |
| 4288 */ | |
| 4289 if (mch_getperm(fname) < 0) /* it does not exist */ | |
| 4290 { | |
| 4291 #ifdef HAVE_LSTAT | |
| 4292 struct stat sb; | |
| 4293 | |
| 4294 /* | |
| 4295 * Extra security check: When a swap file is a symbolic link, this | |
| 4296 * is most likely a symlink attack. | |
| 4297 */ | |
| 4298 if (mch_lstat((char *)fname, &sb) < 0) | |
| 4299 #else | |
| 4300 # ifdef AMIGA | |
| 4301 fh = Open((UBYTE *)fname, (long)MODE_NEWFILE); | |
| 4302 /* | |
| 4303 * on the Amiga mch_getperm() will return -1 when the file exists | |
| 4304 * but is being used by another program. This happens if you edit | |
| 4305 * a file twice. | |
| 4306 */ | |
| 4307 if (fh != (BPTR)NULL) /* can open file, OK */ | |
| 4308 { | |
| 4309 Close(fh); | |
| 4310 mch_remove(fname); | |
| 4311 break; | |
| 4312 } | |
| 4313 if (IoErr() != ERROR_OBJECT_IN_USE | |
| 4314 && IoErr() != ERROR_OBJECT_EXISTS) | |
| 4315 # endif | |
| 4316 #endif | |
| 4317 break; | |
| 4318 } | |
| 4319 | |
| 4320 /* | |
| 4321 * A file name equal to old_fname is OK to use. | |
| 4322 */ | |
| 4323 if (old_fname != NULL && fnamecmp(fname, old_fname) == 0) | |
| 4324 break; | |
| 4325 | |
| 4326 /* | |
| 4327 * get here when file already exists | |
| 4328 */ | |
| 4329 if (fname[n - 2] == 'w' && fname[n - 1] == 'p') /* first try */ | |
| 4330 { | |
| 4331 #ifndef SHORT_FNAME | |
| 4332 /* | |
| 4333 * on MS-DOS compatible filesystems (e.g. messydos) file.doc.swp | |
| 4334 * and file.doc are the same file. To guess if this problem is | |
| 4335 * present try if file.doc.swx exists. If it does, we set | |
| 4336 * buf->b_shortname and try file_doc.swp (dots replaced by | |
| 4337 * underscores for this file), and try again. If it doesn't we | |
| 4338 * assume that "file.doc.swp" already exists. | |
| 4339 */ | |
| 4340 if (!(buf->b_p_sn || buf->b_shortname)) /* not tried yet */ | |
| 4341 { | |
| 4342 fname[n - 1] = 'x'; | |
| 4343 r = mch_getperm(fname); /* try "file.swx" */ | |
| 4344 fname[n - 1] = 'p'; | |
| 4345 if (r >= 0) /* "file.swx" seems to exist */ | |
| 4346 { | |
| 4347 buf->b_shortname = TRUE; | |
| 4348 vim_free(fname); | |
| 460 | 4349 fname = makeswapname(buf->b_fname, buf->b_ffname, |
| 4350 buf, dir_name); | |
| 7 | 4351 continue; /* try again with '.' replaced with '_' */ |
| 4352 } | |
| 4353 } | |
| 4354 #endif | |
| 4355 /* | |
| 4356 * If we get here the ".swp" file really exists. | |
| 4357 * Give an error message, unless recovering, no file name, we are | |
| 4358 * viewing a help file or when the path of the file is different | |
| 4359 * (happens when all .swp files are in one directory). | |
| 4360 */ | |
| 43 | 4361 if (!recoverymode && buf->b_fname != NULL |
| 4362 && !buf->b_help && !(buf->b_flags & BF_DUMMY)) | |
| 7 | 4363 { |
| 4364 int fd; | |
| 4365 struct block0 b0; | |
| 4366 int differ = FALSE; | |
| 4367 | |
| 4368 /* | |
| 4369 * Try to read block 0 from the swap file to get the original | |
| 4370 * file name (and inode number). | |
| 4371 */ | |
| 4372 fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
| 4373 if (fd >= 0) | |
| 4374 { | |
| 2664 | 4375 if (read_eintr(fd, &b0, sizeof(b0)) == sizeof(b0)) |
| 7 | 4376 { |
| 4377 /* | |
| 39 | 4378 * If the swapfile has the same directory as the |
| 4379 * buffer don't compare the directory names, they can | |
| 4380 * have a different mountpoint. | |
| 7 | 4381 */ |
| 39 | 4382 if (b0.b0_flags & B0_SAME_DIR) |
| 4383 { | |
| 4384 if (fnamecmp(gettail(buf->b_ffname), | |
| 4385 gettail(b0.b0_fname)) != 0 | |
| 4386 || !same_directory(fname, buf->b_ffname)) | |
| 594 | 4387 { |
| 4388 #ifdef CHECK_INODE | |
| 4389 /* Symlinks may point to the same file even | |
| 4390 * when the name differs, need to check the | |
| 4391 * inode too. */ | |
| 4392 expand_env(b0.b0_fname, NameBuff, MAXPATHL); | |
| 4393 if (fnamecmp_ino(buf->b_ffname, NameBuff, | |
| 4394 char_to_long(b0.b0_ino))) | |
| 4395 #endif | |
| 4396 differ = TRUE; | |
| 4397 } | |
| 39 | 4398 } |
| 4399 else | |
| 4400 { | |
| 4401 /* | |
| 4402 * The name in the swap file may be | |
| 4403 * "~user/path/file". Expand it first. | |
| 4404 */ | |
| 4405 expand_env(b0.b0_fname, NameBuff, MAXPATHL); | |
| 7 | 4406 #ifdef CHECK_INODE |
| 39 | 4407 if (fnamecmp_ino(buf->b_ffname, NameBuff, |
| 594 | 4408 char_to_long(b0.b0_ino))) |
| 39 | 4409 differ = TRUE; |
| 7 | 4410 #else |
| 39 | 4411 if (fnamecmp(NameBuff, buf->b_ffname) != 0) |
| 4412 differ = TRUE; | |
| 7 | 4413 #endif |
| 39 | 4414 } |
| 7 | 4415 } |
| 4416 close(fd); | |
| 4417 } | |
| 4418 | |
| 4419 /* give the ATTENTION message when there is an old swap file | |
| 4420 * for the current file, and the buffer was not recovered. */ | |
| 4421 if (differ == FALSE && !(curbuf->b_flags & BF_RECOVERED) | |
| 4422 && vim_strchr(p_shm, SHM_ATTENTION) == NULL) | |
| 4423 { | |
| 580 | 4424 #if defined(HAS_SWAP_EXISTS_ACTION) |
| 4425 int choice = 0; | |
| 4426 #endif | |
| 7 | 4427 #ifdef CREATE_DUMMY_FILE |
| 4428 int did_use_dummy = FALSE; | |
| 4429 | |
| 4430 /* Avoid getting a warning for the file being created | |
| 4431 * outside of Vim, it was created at the start of this | |
| 4432 * function. Delete the file now, because Vim might exit | |
| 4433 * here if the window is closed. */ | |
| 4434 if (dummyfd != NULL) | |
| 4435 { | |
| 4436 fclose(dummyfd); | |
| 4437 dummyfd = NULL; | |
| 4438 mch_remove(buf->b_fname); | |
| 4439 did_use_dummy = TRUE; | |
| 4440 } | |
| 4441 #endif | |
| 4442 | |
| 4443 #if (defined(UNIX) || defined(__EMX__) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)) | |
| 4444 process_still_running = FALSE; | |
| 4445 #endif | |
| 580 | 4446 #ifdef FEAT_AUTOCMD |
| 4447 /* | |
| 4448 * If there is an SwapExists autocommand and we can handle | |
| 4449 * the response, trigger it. It may return 0 to ask the | |
| 4450 * user anyway. | |
| 4451 */ | |
| 4452 if (swap_exists_action != SEA_NONE | |
| 4453 && has_autocmd(EVENT_SWAPEXISTS, buf->b_fname, buf)) | |
| 4454 choice = do_swapexists(buf, fname); | |
| 4455 | |
| 4456 if (choice == 0) | |
| 4457 #endif | |
| 7 | 4458 { |
| 580 | 4459 #ifdef FEAT_GUI |
| 4460 /* If we are supposed to start the GUI but it wasn't | |
| 4461 * completely started yet, start it now. This makes | |
| 4462 * the messages displayed in the Vim window when | |
| 4463 * loading a session from the .gvimrc file. */ | |
| 4464 if (gui.starting && !gui.in_use) | |
| 4465 gui_start(); | |
| 4466 #endif | |
| 4467 /* Show info about the existing swap file. */ | |
| 4468 attention_message(buf, fname); | |
| 4469 | |
| 4470 /* We don't want a 'q' typed at the more-prompt | |
| 4471 * interrupt loading a file. */ | |
| 4472 got_int = FALSE; | |
| 7 | 4473 } |
| 4474 | |
| 4475 #if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) | |
| 580 | 4476 if (swap_exists_action != SEA_NONE && choice == 0) |
| 7 | 4477 { |
| 4478 char_u *name; | |
| 4479 | |
| 4480 name = alloc((unsigned)(STRLEN(fname) | |
| 4481 + STRLEN(_("Swap file \"")) | |
| 4482 + STRLEN(_("\" already exists!")) + 5)); | |
| 4483 if (name != NULL) | |
| 4484 { | |
| 4485 STRCPY(name, _("Swap file \"")); | |
| 4486 home_replace(NULL, fname, name + STRLEN(name), | |
| 4487 1000, TRUE); | |
| 4488 STRCAT(name, _("\" already exists!")); | |
| 4489 } | |
| 580 | 4490 choice = do_dialog(VIM_WARNING, |
| 7 | 4491 (char_u *)_("VIM - ATTENTION"), |
| 4492 name == NULL | |
| 4493 ? (char_u *)_("Swap file already exists!") | |
| 4494 : name, | |
| 4495 # if defined(UNIX) || defined(__EMX__) || defined(VMS) | |
| 4496 process_still_running | |
| 4497 ? (char_u *)_("&Open Read-Only\n&Edit anyway\n&Recover\n&Quit\n&Abort") : | |
| 4498 # endif | |
| 2684 | 4499 (char_u *)_("&Open Read-Only\n&Edit anyway\n&Recover\n&Delete it\n&Quit\n&Abort"), 1, NULL, FALSE); |
| 580 | 4500 |
| 4501 # if defined(UNIX) || defined(__EMX__) || defined(VMS) | |
| 4502 if (process_still_running && choice >= 4) | |
| 4503 choice++; /* Skip missing "Delete it" button */ | |
| 4504 # endif | |
| 4505 vim_free(name); | |
| 4506 | |
| 4507 /* pretend screen didn't scroll, need redraw anyway */ | |
| 4508 msg_scrolled = 0; | |
| 4509 redraw_all_later(NOT_VALID); | |
| 4510 } | |
| 4511 #endif | |
| 4512 | |
| 4513 #if defined(HAS_SWAP_EXISTS_ACTION) | |
| 4514 if (choice > 0) | |
| 4515 { | |
| 4516 switch (choice) | |
| 7 | 4517 { |
| 4518 case 1: | |
| 4519 buf->b_p_ro = TRUE; | |
| 4520 break; | |
| 4521 case 2: | |
| 4522 break; | |
| 4523 case 3: | |
| 4524 swap_exists_action = SEA_RECOVER; | |
| 4525 break; | |
| 4526 case 4: | |
| 580 | 4527 mch_remove(fname); |
| 4528 break; | |
| 4529 case 5: | |
| 7 | 4530 swap_exists_action = SEA_QUIT; |
| 4531 break; | |
| 580 | 4532 case 6: |
| 7 | 4533 swap_exists_action = SEA_QUIT; |
| 4534 got_int = TRUE; | |
| 4535 break; | |
| 4536 } | |
| 4537 | |
| 4538 /* If the file was deleted this fname can be used. */ | |
| 4539 if (mch_getperm(fname) < 0) | |
| 4540 break; | |
| 4541 } | |
| 4542 else | |
| 4543 #endif | |
| 4544 { | |
| 4545 MSG_PUTS("\n"); | |
| 625 | 4546 if (msg_silent == 0) |
| 4547 /* call wait_return() later */ | |
| 4548 need_wait_return = TRUE; | |
| 7 | 4549 } |
| 4550 | |
| 4551 #ifdef CREATE_DUMMY_FILE | |
| 4552 /* Going to try another name, need the dummy file again. */ | |
| 4553 if (did_use_dummy) | |
| 4554 dummyfd = mch_fopen((char *)buf->b_fname, "w"); | |
| 4555 #endif | |
| 4556 } | |
| 4557 } | |
| 4558 } | |
| 4559 | |
| 4560 /* | |
| 4561 * Change the ".swp" extension to find another file that can be used. | |
| 4562 * First decrement the last char: ".swo", ".swn", etc. | |
| 4563 * If that still isn't enough decrement the last but one char: ".svz" | |
| 9 | 4564 * Can happen when editing many "No Name" buffers. |
| 7 | 4565 */ |
| 4566 if (fname[n - 1] == 'a') /* ".s?a" */ | |
| 4567 { | |
| 4568 if (fname[n - 2] == 'a') /* ".saa": tried enough, give up */ | |
| 4569 { | |
| 4570 EMSG(_("E326: Too many swap files found")); | |
| 4571 vim_free(fname); | |
| 4572 fname = NULL; | |
| 4573 break; | |
| 4574 } | |
| 4575 --fname[n - 2]; /* ".svz", ".suz", etc. */ | |
| 4576 fname[n - 1] = 'z' + 1; | |
| 4577 } | |
| 4578 --fname[n - 1]; /* ".swo", ".swn", etc. */ | |
| 4579 } | |
| 4580 | |
| 4581 vim_free(dir_name); | |
| 4582 #ifdef CREATE_DUMMY_FILE | |
| 4583 if (dummyfd != NULL) /* file has been created temporarily */ | |
| 4584 { | |
| 4585 fclose(dummyfd); | |
| 4586 mch_remove(buf->b_fname); | |
| 4587 } | |
| 4588 #endif | |
| 4589 return fname; | |
| 4590 } | |
| 4591 | |
| 4592 static int | |
| 4593 b0_magic_wrong(b0p) | |
| 4594 ZERO_BL *b0p; | |
| 4595 { | |
| 4596 return (b0p->b0_magic_long != (long)B0_MAGIC_LONG | |
| 4597 || b0p->b0_magic_int != (int)B0_MAGIC_INT | |
| 4598 || b0p->b0_magic_short != (short)B0_MAGIC_SHORT | |
| 4599 || b0p->b0_magic_char != B0_MAGIC_CHAR); | |
| 4600 } | |
| 4601 | |
| 4602 #ifdef CHECK_INODE | |
| 4603 /* | |
| 4604 * Compare current file name with file name from swap file. | |
| 4605 * Try to use inode numbers when possible. | |
| 4606 * Return non-zero when files are different. | |
| 4607 * | |
| 4608 * When comparing file names a few things have to be taken into consideration: | |
| 4609 * - When working over a network the full path of a file depends on the host. | |
| 4610 * We check the inode number if possible. It is not 100% reliable though, | |
| 4611 * because the device number cannot be used over a network. | |
| 4612 * - When a file does not exist yet (editing a new file) there is no inode | |
| 4613 * number. | |
| 4614 * - The file name in a swap file may not be valid on the current host. The | |
| 4615 * "~user" form is used whenever possible to avoid this. | |
| 4616 * | |
| 4617 * This is getting complicated, let's make a table: | |
| 4618 * | |
| 4619 * ino_c ino_s fname_c fname_s differ = | |
| 4620 * | |
| 4621 * both files exist -> compare inode numbers: | |
| 4622 * != 0 != 0 X X ino_c != ino_s | |
| 4623 * | |
| 4624 * inode number(s) unknown, file names available -> compare file names | |
| 4625 * == 0 X OK OK fname_c != fname_s | |
| 4626 * X == 0 OK OK fname_c != fname_s | |
| 4627 * | |
| 4628 * current file doesn't exist, file for swap file exist, file name(s) not | |
| 4629 * available -> probably different | |
| 4630 * == 0 != 0 FAIL X TRUE | |
| 4631 * == 0 != 0 X FAIL TRUE | |
| 4632 * | |
| 4633 * current file exists, inode for swap unknown, file name(s) not | |
| 4634 * available -> probably different | |
| 4635 * != 0 == 0 FAIL X TRUE | |
| 4636 * != 0 == 0 X FAIL TRUE | |
| 4637 * | |
| 4638 * current file doesn't exist, inode for swap unknown, one file name not | |
| 4639 * available -> probably different | |
| 4640 * == 0 == 0 FAIL OK TRUE | |
| 4641 * == 0 == 0 OK FAIL TRUE | |
| 4642 * | |
| 4643 * current file doesn't exist, inode for swap unknown, both file names not | |
| 4644 * available -> probably same file | |
| 4645 * == 0 == 0 FAIL FAIL FALSE | |
| 4646 * | |
| 4647 * Note that when the ino_t is 64 bits, only the last 32 will be used. This | |
| 4648 * can't be changed without making the block 0 incompatible with 32 bit | |
| 4649 * versions. | |
| 4650 */ | |
| 4651 | |
| 4652 static int | |
| 4653 fnamecmp_ino(fname_c, fname_s, ino_block0) | |
| 4654 char_u *fname_c; /* current file name */ | |
| 4655 char_u *fname_s; /* file name from swap file */ | |
| 4656 long ino_block0; | |
| 4657 { | |
| 4658 struct stat st; | |
| 4659 ino_t ino_c = 0; /* ino of current file */ | |
| 4660 ino_t ino_s; /* ino of file from swap file */ | |
| 4661 char_u buf_c[MAXPATHL]; /* full path of fname_c */ | |
| 4662 char_u buf_s[MAXPATHL]; /* full path of fname_s */ | |
| 4663 int retval_c; /* flag: buf_c valid */ | |
| 4664 int retval_s; /* flag: buf_s valid */ | |
| 4665 | |
| 4666 if (mch_stat((char *)fname_c, &st) == 0) | |
| 4667 ino_c = (ino_t)st.st_ino; | |
| 4668 | |
| 4669 /* | |
| 4670 * First we try to get the inode from the file name, because the inode in | |
| 4671 * the swap file may be outdated. If that fails (e.g. this path is not | |
| 4672 * valid on this machine), use the inode from block 0. | |
| 4673 */ | |
| 4674 if (mch_stat((char *)fname_s, &st) == 0) | |
| 4675 ino_s = (ino_t)st.st_ino; | |
| 4676 else | |
| 4677 ino_s = (ino_t)ino_block0; | |
| 4678 | |
| 4679 if (ino_c && ino_s) | |
| 4680 return (ino_c != ino_s); | |
| 4681 | |
| 4682 /* | |
| 4683 * One of the inode numbers is unknown, try a forced vim_FullName() and | |
| 4684 * compare the file names. | |
| 4685 */ | |
| 4686 retval_c = vim_FullName(fname_c, buf_c, MAXPATHL, TRUE); | |
| 4687 retval_s = vim_FullName(fname_s, buf_s, MAXPATHL, TRUE); | |
| 4688 if (retval_c == OK && retval_s == OK) | |
| 4689 return (STRCMP(buf_c, buf_s) != 0); | |
| 4690 | |
| 4691 /* | |
| 4692 * Can't compare inodes or file names, guess that the files are different, | |
| 4693 * unless both appear not to exist at all. | |
| 4694 */ | |
| 4695 if (ino_s == 0 && ino_c == 0 && retval_c == FAIL && retval_s == FAIL) | |
| 4696 return FALSE; | |
| 4697 return TRUE; | |
| 4698 } | |
| 4699 #endif /* CHECK_INODE */ | |
| 4700 | |
| 4701 /* | |
| 4702 * Move a long integer into a four byte character array. | |
| 4703 * Used for machine independency in block zero. | |
| 4704 */ | |
| 4705 static void | |
| 4706 long_to_char(n, s) | |
| 4707 long n; | |
| 4708 char_u *s; | |
| 4709 { | |
| 4710 s[0] = (char_u)(n & 0xff); | |
| 4711 n = (unsigned)n >> 8; | |
| 4712 s[1] = (char_u)(n & 0xff); | |
| 4713 n = (unsigned)n >> 8; | |
| 4714 s[2] = (char_u)(n & 0xff); | |
| 4715 n = (unsigned)n >> 8; | |
| 4716 s[3] = (char_u)(n & 0xff); | |
| 4717 } | |
| 4718 | |
| 4719 static long | |
| 4720 char_to_long(s) | |
| 4721 char_u *s; | |
| 4722 { | |
| 4723 long retval; | |
| 4724 | |
| 4725 retval = s[3]; | |
| 4726 retval <<= 8; | |
| 4727 retval |= s[2]; | |
| 4728 retval <<= 8; | |
| 4729 retval |= s[1]; | |
| 4730 retval <<= 8; | |
| 4731 retval |= s[0]; | |
| 4732 | |
| 4733 return retval; | |
| 4734 } | |
| 4735 | |
| 39 | 4736 /* |
| 4737 * Set the flags in the first block of the swap file: | |
| 4738 * - file is modified or not: buf->b_changed | |
| 4739 * - 'fileformat' | |
| 4740 * - 'fileencoding' | |
| 4741 */ | |
| 7 | 4742 void |
| 39 | 4743 ml_setflags(buf) |
| 7 | 4744 buf_T *buf; |
| 4745 { | |
| 4746 bhdr_T *hp; | |
| 4747 ZERO_BL *b0p; | |
| 4748 | |
| 4749 if (!buf->b_ml.ml_mfp) | |
| 4750 return; | |
| 4751 for (hp = buf->b_ml.ml_mfp->mf_used_last; hp != NULL; hp = hp->bh_prev) | |
| 4752 { | |
| 4753 if (hp->bh_bnum == 0) | |
| 4754 { | |
| 4755 b0p = (ZERO_BL *)(hp->bh_data); | |
| 39 | 4756 b0p->b0_dirty = buf->b_changed ? B0_DIRTY : 0; |
| 4757 b0p->b0_flags = (b0p->b0_flags & ~B0_FF_MASK) | |
| 4758 | (get_fileformat(buf) + 1); | |
| 4759 #ifdef FEAT_MBYTE | |
| 4760 add_b0_fenc(b0p, buf); | |
| 4761 #endif | |
| 7 | 4762 hp->bh_flags |= BH_DIRTY; |
| 4763 mf_sync(buf->b_ml.ml_mfp, MFS_ZERO); | |
| 4764 break; | |
| 4765 } | |
| 4766 } | |
| 4767 } | |
| 4768 | |
| 2267 | 4769 #if defined(FEAT_CRYPT) || defined(PROTO) |
| 4770 /* | |
| 4771 * If "data" points to a data block encrypt the text in it and return a copy | |
| 4772 * in allocated memory. Return NULL when out of memory. | |
| 4773 * Otherwise return "data". | |
| 4774 */ | |
| 4775 char_u * | |
| 4776 ml_encrypt_data(mfp, data, offset, size) | |
| 4777 memfile_T *mfp; | |
| 4778 char_u *data; | |
| 4779 off_t offset; | |
| 4780 unsigned size; | |
| 4781 { | |
| 4782 DATA_BL *dp = (DATA_BL *)data; | |
| 4783 char_u *head_end; | |
| 4784 char_u *text_start; | |
| 4785 char_u *new_data; | |
| 4786 int text_len; | |
| 4787 | |
| 4788 if (dp->db_id != DATA_ID) | |
| 4789 return data; | |
| 4790 | |
| 4791 new_data = (char_u *)alloc(size); | |
| 4792 if (new_data == NULL) | |
| 4793 return NULL; | |
| 4794 head_end = (char_u *)(&dp->db_index[dp->db_line_count]); | |
| 4795 text_start = (char_u *)dp + dp->db_txt_start; | |
| 4796 text_len = size - dp->db_txt_start; | |
| 4797 | |
| 4798 /* Copy the header and the text. */ | |
| 4799 mch_memmove(new_data, dp, head_end - (char_u *)dp); | |
| 4800 | |
| 4801 /* Encrypt the text. */ | |
| 4802 crypt_push_state(); | |
| 4803 ml_crypt_prepare(mfp, offset, FALSE); | |
| 4804 crypt_encode(text_start, text_len, new_data + dp->db_txt_start); | |
| 4805 crypt_pop_state(); | |
| 4806 | |
| 4807 /* Clear the gap. */ | |
| 4808 if (head_end < text_start) | |
| 4809 vim_memset(new_data + (head_end - data), 0, text_start - head_end); | |
| 4810 | |
| 4811 return new_data; | |
| 4812 } | |
| 4813 | |
| 4814 /* | |
| 4815 * Decrypt the text in "data" if it points to a data block. | |
| 4816 */ | |
| 4817 void | |
| 4818 ml_decrypt_data(mfp, data, offset, size) | |
| 4819 memfile_T *mfp; | |
| 4820 char_u *data; | |
| 4821 off_t offset; | |
| 4822 unsigned size; | |
| 4823 { | |
| 4824 DATA_BL *dp = (DATA_BL *)data; | |
| 4825 char_u *head_end; | |
| 4826 char_u *text_start; | |
| 4827 int text_len; | |
| 4828 | |
| 4829 if (dp->db_id == DATA_ID) | |
| 4830 { | |
| 4831 head_end = (char_u *)(&dp->db_index[dp->db_line_count]); | |
| 4832 text_start = (char_u *)dp + dp->db_txt_start; | |
| 4833 text_len = dp->db_txt_end - dp->db_txt_start; | |
| 4834 | |
| 4835 if (head_end > text_start || dp->db_txt_start > size | |
| 4836 || dp->db_txt_end > size) | |
| 4837 return; /* data was messed up */ | |
| 4838 | |
| 4839 /* Decrypt the text in place. */ | |
| 4840 crypt_push_state(); | |
| 4841 ml_crypt_prepare(mfp, offset, TRUE); | |
| 4842 crypt_decode(text_start, text_len); | |
| 4843 crypt_pop_state(); | |
| 4844 } | |
| 4845 } | |
| 4846 | |
| 4847 /* | |
| 4848 * Prepare for encryption/decryption, using the key, seed and offset. | |
| 4849 */ | |
| 4850 static void | |
| 4851 ml_crypt_prepare(mfp, offset, reading) | |
| 4852 memfile_T *mfp; | |
| 4853 off_t offset; | |
| 4854 int reading; | |
| 4855 { | |
| 4856 buf_T *buf = mfp->mf_buffer; | |
| 4857 char_u salt[50]; | |
| 4858 int method; | |
| 4859 char_u *key; | |
| 4860 char_u *seed; | |
| 4861 | |
| 4862 if (reading && mfp->mf_old_key != NULL) | |
| 4863 { | |
| 4864 /* Reading back blocks with the previous key/method/seed. */ | |
| 4865 method = mfp->mf_old_cm; | |
| 4866 key = mfp->mf_old_key; | |
| 4867 seed = mfp->mf_old_seed; | |
| 4868 } | |
| 4869 else | |
| 4870 { | |
|
2360
d8e4b27cef80
Change 'cryptmethod' from a number to a string option. Make it global-local.
Bram Moolenaar <bram@vim.org>
parents:
2283
diff
changeset
|
4871 method = get_crypt_method(buf); |
| 2267 | 4872 key = buf->b_p_key; |
| 4873 seed = mfp->mf_seed; | |
| 4874 } | |
| 4875 | |
| 4876 use_crypt_method = method; /* select pkzip or blowfish */ | |
| 4877 if (method == 0) | |
| 4878 { | |
| 4879 vim_snprintf((char *)salt, sizeof(salt), "%s%ld", key, (long)offset); | |
| 4880 crypt_init_keys(salt); | |
| 4881 } | |
| 4882 else | |
| 4883 { | |
| 4884 /* Using blowfish, add salt and seed. We use the byte offset of the | |
| 4885 * block for the salt. */ | |
| 4886 vim_snprintf((char *)salt, sizeof(salt), "%ld", (long)offset); | |
| 2272 | 4887 bf_key_init(key, salt, (int)STRLEN(salt)); |
| 2267 | 4888 bf_ofb_init(seed, MF_SEED_LEN); |
| 4889 } | |
| 4890 } | |
| 4891 | |
| 4892 #endif | |
| 4893 | |
| 4894 | |
| 7 | 4895 #if defined(FEAT_BYTEOFF) || defined(PROTO) |
| 4896 | |
| 4897 #define MLCS_MAXL 800 /* max no of lines in chunk */ | |
| 4898 #define MLCS_MINL 400 /* should be half of MLCS_MAXL */ | |
| 4899 | |
| 4900 /* | |
|
2407
6bc102a4bff8
Fix memory access to 'cryptmethod' during recovery. (Dominique Pelle)
Bram Moolenaar <bram@vim.org>
parents:
2394
diff
changeset
|
4901 * Keep information for finding byte offset of a line, updtype may be one of: |
| 7 | 4902 * ML_CHNK_ADDLINE: Add len to parent chunk, possibly splitting it |
| 4903 * Careful: ML_CHNK_ADDLINE may cause ml_find_line() to be called. | |
| 4904 * ML_CHNK_DELLINE: Subtract len from parent chunk, possibly deleting it | |
| 4905 * ML_CHNK_UPDLINE: Add len to parent chunk, as a signed entity. | |
| 4906 */ | |
| 4907 static void | |
| 4908 ml_updatechunk(buf, line, len, updtype) | |
| 4909 buf_T *buf; | |
| 4910 linenr_T line; | |
| 4911 long len; | |
| 4912 int updtype; | |
| 4913 { | |
| 4914 static buf_T *ml_upd_lastbuf = NULL; | |
| 4915 static linenr_T ml_upd_lastline; | |
| 4916 static linenr_T ml_upd_lastcurline; | |
| 4917 static int ml_upd_lastcurix; | |
| 4918 | |
| 4919 linenr_T curline = ml_upd_lastcurline; | |
| 4920 int curix = ml_upd_lastcurix; | |
| 4921 long size; | |
| 4922 chunksize_T *curchnk; | |
| 4923 int rest; | |
| 4924 bhdr_T *hp; | |
| 4925 DATA_BL *dp; | |
| 4926 | |
| 4927 if (buf->b_ml.ml_usedchunks == -1 || len == 0) | |
| 4928 return; | |
| 4929 if (buf->b_ml.ml_chunksize == NULL) | |
| 4930 { | |
| 4931 buf->b_ml.ml_chunksize = (chunksize_T *) | |
| 4932 alloc((unsigned)sizeof(chunksize_T) * 100); | |
| 4933 if (buf->b_ml.ml_chunksize == NULL) | |
| 4934 { | |
| 4935 buf->b_ml.ml_usedchunks = -1; | |
| 4936 return; | |
| 4937 } | |
| 4938 buf->b_ml.ml_numchunks = 100; | |
| 4939 buf->b_ml.ml_usedchunks = 1; | |
| 4940 buf->b_ml.ml_chunksize[0].mlcs_numlines = 1; | |
| 4941 buf->b_ml.ml_chunksize[0].mlcs_totalsize = 1; | |
| 4942 } | |
| 4943 | |
| 4944 if (updtype == ML_CHNK_UPDLINE && buf->b_ml.ml_line_count == 1) | |
| 4945 { | |
| 4946 /* | |
| 4947 * First line in empty buffer from ml_flush_line() -- reset | |
| 4948 */ | |
| 4949 buf->b_ml.ml_usedchunks = 1; | |
| 4950 buf->b_ml.ml_chunksize[0].mlcs_numlines = 1; | |
| 4951 buf->b_ml.ml_chunksize[0].mlcs_totalsize = | |
| 4952 (long)STRLEN(buf->b_ml.ml_line_ptr) + 1; | |
| 4953 return; | |
| 4954 } | |
| 4955 | |
| 4956 /* | |
| 4957 * Find chunk that our line belongs to, curline will be at start of the | |
| 4958 * chunk. | |
| 4959 */ | |
| 4960 if (buf != ml_upd_lastbuf || line != ml_upd_lastline + 1 | |
| 4961 || updtype != ML_CHNK_ADDLINE) | |
| 4962 { | |
| 4963 for (curline = 1, curix = 0; | |
| 4964 curix < buf->b_ml.ml_usedchunks - 1 | |
| 4965 && line >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 4966 curix++) | |
| 4967 { | |
| 4968 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 4969 } | |
| 4970 } | |
| 4971 else if (line >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines | |
| 4972 && curix < buf->b_ml.ml_usedchunks - 1) | |
| 4973 { | |
| 4974 /* Adjust cached curix & curline */ | |
| 4975 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 4976 curix++; | |
| 4977 } | |
| 4978 curchnk = buf->b_ml.ml_chunksize + curix; | |
| 4979 | |
| 4980 if (updtype == ML_CHNK_DELLINE) | |
| 1030 | 4981 len = -len; |
| 7 | 4982 curchnk->mlcs_totalsize += len; |
| 4983 if (updtype == ML_CHNK_ADDLINE) | |
| 4984 { | |
| 4985 curchnk->mlcs_numlines++; | |
| 4986 | |
| 4987 /* May resize here so we don't have to do it in both cases below */ | |
| 4988 if (buf->b_ml.ml_usedchunks + 1 >= buf->b_ml.ml_numchunks) | |
| 4989 { | |
| 4990 buf->b_ml.ml_numchunks = buf->b_ml.ml_numchunks * 3 / 2; | |
| 4991 buf->b_ml.ml_chunksize = (chunksize_T *) | |
| 4992 vim_realloc(buf->b_ml.ml_chunksize, | |
| 4993 sizeof(chunksize_T) * buf->b_ml.ml_numchunks); | |
| 4994 if (buf->b_ml.ml_chunksize == NULL) | |
| 4995 { | |
| 4996 /* Hmmmm, Give up on offset for this buffer */ | |
| 4997 buf->b_ml.ml_usedchunks = -1; | |
| 4998 return; | |
| 4999 } | |
| 5000 } | |
| 5001 | |
| 5002 if (buf->b_ml.ml_chunksize[curix].mlcs_numlines >= MLCS_MAXL) | |
| 5003 { | |
| 5004 int count; /* number of entries in block */ | |
| 5005 int idx; | |
| 5006 int text_end; | |
| 5007 int linecnt; | |
| 5008 | |
| 5009 mch_memmove(buf->b_ml.ml_chunksize + curix + 1, | |
| 5010 buf->b_ml.ml_chunksize + curix, | |
| 5011 (buf->b_ml.ml_usedchunks - curix) * | |
| 5012 sizeof(chunksize_T)); | |
| 1855 | 5013 /* Compute length of first half of lines in the split chunk */ |
| 7 | 5014 size = 0; |
| 5015 linecnt = 0; | |
| 5016 while (curline < buf->b_ml.ml_line_count | |
| 5017 && linecnt < MLCS_MINL) | |
| 5018 { | |
| 5019 if ((hp = ml_find_line(buf, curline, ML_FIND)) == NULL) | |
| 5020 { | |
| 5021 buf->b_ml.ml_usedchunks = -1; | |
| 5022 return; | |
| 5023 } | |
| 5024 dp = (DATA_BL *)(hp->bh_data); | |
| 5025 count = (long)(buf->b_ml.ml_locked_high) - | |
| 5026 (long)(buf->b_ml.ml_locked_low) + 1; | |
| 5027 idx = curline - buf->b_ml.ml_locked_low; | |
| 5028 curline = buf->b_ml.ml_locked_high + 1; | |
| 5029 if (idx == 0)/* first line in block, text at the end */ | |
| 5030 text_end = dp->db_txt_end; | |
| 5031 else | |
| 5032 text_end = ((dp->db_index[idx - 1]) & DB_INDEX_MASK); | |
| 5033 /* Compute index of last line to use in this MEMLINE */ | |
| 5034 rest = count - idx; | |
| 5035 if (linecnt + rest > MLCS_MINL) | |
| 5036 { | |
| 5037 idx += MLCS_MINL - linecnt - 1; | |
| 5038 linecnt = MLCS_MINL; | |
| 5039 } | |
| 5040 else | |
| 5041 { | |
| 5042 idx = count - 1; | |
| 5043 linecnt += rest; | |
| 5044 } | |
| 5045 size += text_end - ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 5046 } | |
| 5047 buf->b_ml.ml_chunksize[curix].mlcs_numlines = linecnt; | |
| 5048 buf->b_ml.ml_chunksize[curix + 1].mlcs_numlines -= linecnt; | |
| 5049 buf->b_ml.ml_chunksize[curix].mlcs_totalsize = size; | |
| 5050 buf->b_ml.ml_chunksize[curix + 1].mlcs_totalsize -= size; | |
| 5051 buf->b_ml.ml_usedchunks++; | |
| 5052 ml_upd_lastbuf = NULL; /* Force recalc of curix & curline */ | |
| 5053 return; | |
| 5054 } | |
| 5055 else if (buf->b_ml.ml_chunksize[curix].mlcs_numlines >= MLCS_MINL | |
| 5056 && curix == buf->b_ml.ml_usedchunks - 1 | |
| 5057 && buf->b_ml.ml_line_count - line <= 1) | |
| 5058 { | |
| 5059 /* | |
| 5060 * We are in the last chunk and it is cheap to crate a new one | |
| 5061 * after this. Do it now to avoid the loop above later on | |
| 5062 */ | |
| 5063 curchnk = buf->b_ml.ml_chunksize + curix + 1; | |
| 5064 buf->b_ml.ml_usedchunks++; | |
| 5065 if (line == buf->b_ml.ml_line_count) | |
| 5066 { | |
| 5067 curchnk->mlcs_numlines = 0; | |
| 5068 curchnk->mlcs_totalsize = 0; | |
| 5069 } | |
| 5070 else | |
| 5071 { | |
| 5072 /* | |
| 5073 * Line is just prior to last, move count for last | |
| 5074 * This is the common case when loading a new file | |
| 5075 */ | |
| 5076 hp = ml_find_line(buf, buf->b_ml.ml_line_count, ML_FIND); | |
| 5077 if (hp == NULL) | |
| 5078 { | |
| 5079 buf->b_ml.ml_usedchunks = -1; | |
| 5080 return; | |
| 5081 } | |
| 5082 dp = (DATA_BL *)(hp->bh_data); | |
| 5083 if (dp->db_line_count == 1) | |
| 5084 rest = dp->db_txt_end - dp->db_txt_start; | |
| 5085 else | |
| 5086 rest = | |
| 5087 ((dp->db_index[dp->db_line_count - 2]) & DB_INDEX_MASK) | |
| 5088 - dp->db_txt_start; | |
| 5089 curchnk->mlcs_totalsize = rest; | |
| 5090 curchnk->mlcs_numlines = 1; | |
| 5091 curchnk[-1].mlcs_totalsize -= rest; | |
| 5092 curchnk[-1].mlcs_numlines -= 1; | |
| 5093 } | |
| 5094 } | |
| 5095 } | |
| 5096 else if (updtype == ML_CHNK_DELLINE) | |
| 5097 { | |
| 5098 curchnk->mlcs_numlines--; | |
| 5099 ml_upd_lastbuf = NULL; /* Force recalc of curix & curline */ | |
| 5100 if (curix < (buf->b_ml.ml_usedchunks - 1) | |
| 5101 && (curchnk->mlcs_numlines + curchnk[1].mlcs_numlines) | |
| 5102 <= MLCS_MINL) | |
| 5103 { | |
| 5104 curix++; | |
| 5105 curchnk = buf->b_ml.ml_chunksize + curix; | |
| 5106 } | |
| 5107 else if (curix == 0 && curchnk->mlcs_numlines <= 0) | |
| 5108 { | |
| 5109 buf->b_ml.ml_usedchunks--; | |
| 5110 mch_memmove(buf->b_ml.ml_chunksize, buf->b_ml.ml_chunksize + 1, | |
| 5111 buf->b_ml.ml_usedchunks * sizeof(chunksize_T)); | |
| 5112 return; | |
| 5113 } | |
| 5114 else if (curix == 0 || (curchnk->mlcs_numlines > 10 | |
| 5115 && (curchnk->mlcs_numlines + curchnk[-1].mlcs_numlines) | |
| 5116 > MLCS_MINL)) | |
| 5117 { | |
| 5118 return; | |
| 5119 } | |
| 5120 | |
| 5121 /* Collapse chunks */ | |
| 5122 curchnk[-1].mlcs_numlines += curchnk->mlcs_numlines; | |
| 5123 curchnk[-1].mlcs_totalsize += curchnk->mlcs_totalsize; | |
| 5124 buf->b_ml.ml_usedchunks--; | |
| 5125 if (curix < buf->b_ml.ml_usedchunks) | |
| 5126 { | |
| 5127 mch_memmove(buf->b_ml.ml_chunksize + curix, | |
| 5128 buf->b_ml.ml_chunksize + curix + 1, | |
| 5129 (buf->b_ml.ml_usedchunks - curix) * | |
| 5130 sizeof(chunksize_T)); | |
| 5131 } | |
| 5132 return; | |
| 5133 } | |
| 5134 ml_upd_lastbuf = buf; | |
| 5135 ml_upd_lastline = line; | |
| 5136 ml_upd_lastcurline = curline; | |
| 5137 ml_upd_lastcurix = curix; | |
| 5138 } | |
| 5139 | |
| 5140 /* | |
| 5141 * Find offset for line or line with offset. | |
| 169 | 5142 * Find line with offset if "lnum" is 0; return remaining offset in offp |
| 5143 * Find offset of line if "lnum" > 0 | |
| 7 | 5144 * return -1 if information is not available |
| 5145 */ | |
| 5146 long | |
| 169 | 5147 ml_find_line_or_offset(buf, lnum, offp) |
| 7 | 5148 buf_T *buf; |
| 169 | 5149 linenr_T lnum; |
| 7 | 5150 long *offp; |
| 5151 { | |
| 5152 linenr_T curline; | |
| 5153 int curix; | |
| 5154 long size; | |
| 5155 bhdr_T *hp; | |
| 5156 DATA_BL *dp; | |
| 5157 int count; /* number of entries in block */ | |
| 5158 int idx; | |
| 5159 int start_idx; | |
| 5160 int text_end; | |
| 5161 long offset; | |
| 5162 int len; | |
| 5163 int ffdos = (get_fileformat(buf) == EOL_DOS); | |
| 5164 int extra = 0; | |
| 5165 | |
| 169 | 5166 /* take care of cached line first */ |
| 5167 ml_flush_line(curbuf); | |
| 5168 | |
| 7 | 5169 if (buf->b_ml.ml_usedchunks == -1 |
| 5170 || buf->b_ml.ml_chunksize == NULL | |
| 169 | 5171 || lnum < 0) |
| 7 | 5172 return -1; |
| 5173 | |
| 5174 if (offp == NULL) | |
| 5175 offset = 0; | |
| 5176 else | |
| 5177 offset = *offp; | |
| 169 | 5178 if (lnum == 0 && offset <= 0) |
| 7 | 5179 return 1; /* Not a "find offset" and offset 0 _must_ be in line 1 */ |
| 5180 /* | |
| 5181 * Find the last chunk before the one containing our line. Last chunk is | |
| 5182 * special because it will never qualify | |
| 5183 */ | |
| 5184 curline = 1; | |
| 5185 curix = size = 0; | |
| 5186 while (curix < buf->b_ml.ml_usedchunks - 1 | |
| 169 | 5187 && ((lnum != 0 |
| 5188 && lnum >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines) | |
| 7 | 5189 || (offset != 0 |
| 5190 && offset > size + buf->b_ml.ml_chunksize[curix].mlcs_totalsize | |
| 5191 + ffdos * buf->b_ml.ml_chunksize[curix].mlcs_numlines))) | |
| 5192 { | |
| 5193 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 5194 size += buf->b_ml.ml_chunksize[curix].mlcs_totalsize; | |
| 5195 if (offset && ffdos) | |
| 5196 size += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 5197 curix++; | |
| 5198 } | |
| 5199 | |
| 169 | 5200 while ((lnum != 0 && curline < lnum) || (offset != 0 && size < offset)) |
| 7 | 5201 { |
| 5202 if (curline > buf->b_ml.ml_line_count | |
| 5203 || (hp = ml_find_line(buf, curline, ML_FIND)) == NULL) | |
| 5204 return -1; | |
| 5205 dp = (DATA_BL *)(hp->bh_data); | |
| 5206 count = (long)(buf->b_ml.ml_locked_high) - | |
| 5207 (long)(buf->b_ml.ml_locked_low) + 1; | |
| 5208 start_idx = idx = curline - buf->b_ml.ml_locked_low; | |
| 5209 if (idx == 0)/* first line in block, text at the end */ | |
| 5210 text_end = dp->db_txt_end; | |
| 5211 else | |
| 5212 text_end = ((dp->db_index[idx - 1]) & DB_INDEX_MASK); | |
| 5213 /* Compute index of last line to use in this MEMLINE */ | |
| 169 | 5214 if (lnum != 0) |
| 7 | 5215 { |
| 169 | 5216 if (curline + (count - idx) >= lnum) |
| 5217 idx += lnum - curline - 1; | |
| 7 | 5218 else |
| 5219 idx = count - 1; | |
| 5220 } | |
| 5221 else | |
| 5222 { | |
| 5223 extra = 0; | |
| 5224 while (offset >= size | |
| 5225 + text_end - (int)((dp->db_index[idx]) & DB_INDEX_MASK) | |
| 5226 + ffdos) | |
| 5227 { | |
| 5228 if (ffdos) | |
| 5229 size++; | |
| 5230 if (idx == count - 1) | |
| 5231 { | |
| 5232 extra = 1; | |
| 5233 break; | |
| 5234 } | |
| 5235 idx++; | |
| 5236 } | |
| 5237 } | |
| 5238 len = text_end - ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 5239 size += len; | |
| 5240 if (offset != 0 && size >= offset) | |
| 5241 { | |
| 5242 if (size + ffdos == offset) | |
| 5243 *offp = 0; | |
| 5244 else if (idx == start_idx) | |
| 5245 *offp = offset - size + len; | |
| 5246 else | |
| 5247 *offp = offset - size + len | |
| 5248 - (text_end - ((dp->db_index[idx - 1]) & DB_INDEX_MASK)); | |
| 5249 curline += idx - start_idx + extra; | |
| 5250 if (curline > buf->b_ml.ml_line_count) | |
| 5251 return -1; /* exactly one byte beyond the end */ | |
| 5252 return curline; | |
| 5253 } | |
| 5254 curline = buf->b_ml.ml_locked_high + 1; | |
| 5255 } | |
| 5256 | |
| 169 | 5257 if (lnum != 0) |
| 20 | 5258 { |
| 5259 /* Count extra CR characters. */ | |
| 5260 if (ffdos) | |
| 169 | 5261 size += lnum - 1; |
| 20 | 5262 |
| 5263 /* Don't count the last line break if 'bin' and 'noeol'. */ | |
| 5264 if (buf->b_p_bin && !buf->b_p_eol) | |
| 5265 size -= ffdos + 1; | |
| 5266 } | |
| 5267 | |
| 7 | 5268 return size; |
| 5269 } | |
| 5270 | |
| 5271 /* | |
| 5272 * Goto byte in buffer with offset 'cnt'. | |
| 5273 */ | |
| 5274 void | |
| 5275 goto_byte(cnt) | |
| 5276 long cnt; | |
| 5277 { | |
| 5278 long boff = cnt; | |
| 5279 linenr_T lnum; | |
| 5280 | |
| 5281 ml_flush_line(curbuf); /* cached line may be dirty */ | |
| 5282 setpcmark(); | |
| 5283 if (boff) | |
| 5284 --boff; | |
| 5285 lnum = ml_find_line_or_offset(curbuf, (linenr_T)0, &boff); | |
| 5286 if (lnum < 1) /* past the end */ | |
| 5287 { | |
| 5288 curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; | |
| 5289 curwin->w_curswant = MAXCOL; | |
| 5290 coladvance((colnr_T)MAXCOL); | |
| 5291 } | |
| 5292 else | |
| 5293 { | |
| 5294 curwin->w_cursor.lnum = lnum; | |
| 5295 curwin->w_cursor.col = (colnr_T)boff; | |
| 572 | 5296 # ifdef FEAT_VIRTUALEDIT |
| 5297 curwin->w_cursor.coladd = 0; | |
| 5298 # endif | |
| 7 | 5299 curwin->w_set_curswant = TRUE; |
| 5300 } | |
| 5301 check_cursor(); | |
| 5302 | |
| 5303 # ifdef FEAT_MBYTE | |
| 5304 /* Make sure the cursor is on the first byte of a multi-byte char. */ | |
| 5305 if (has_mbyte) | |
| 5306 mb_adjust_cursor(); | |
| 5307 # endif | |
| 5308 } | |
| 5309 #endif |