Mercurial > vim
annotate src/memline.c @ 2175:d44112feb815 v7.2.438
updated for version 7.2.438
Problem: "vim -r" crashes.
Solution: Don't use NULL pointer argument.
| author | Bram Moolenaar <bram@vim.org> |
|---|---|
| date | Tue, 25 May 2010 21:37:17 +0200 |
| parents | 733f0dc510c3 |
| children | 073ff46fe397 |
| 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 | |
| 1668 | 45 #if defined(MSDOS) || defined(WIN16) || defined(WIN32) || defined(_WIN64) |
| 1624 | 46 # include "vimio.h" /* for mch_open(), must be before vim.h */ |
| 7 | 47 #endif |
| 48 | |
| 49 #include "vim.h" | |
| 50 | |
| 51 #ifndef UNIX /* it's in os_unix.h for Unix */ | |
| 52 # include <time.h> | |
| 53 #endif | |
| 54 | |
| 1030 | 55 #if defined(SASC) || defined(__amigaos4__) |
| 7 | 56 # include <proto/dos.h> /* for Open() and Close() */ |
| 57 #endif | |
| 58 | |
| 1030 | 59 #ifdef HAVE_ERRNO_H |
| 60 # include <errno.h> | |
| 61 #endif | |
| 62 | |
| 7 | 63 typedef struct block0 ZERO_BL; /* contents of the first block */ |
| 64 typedef struct pointer_block PTR_BL; /* contents of a pointer block */ | |
| 65 typedef struct data_block DATA_BL; /* contents of a data block */ | |
| 66 typedef struct pointer_entry PTR_EN; /* block/line-count pair */ | |
| 67 | |
| 68 #define DATA_ID (('d' << 8) + 'a') /* data block id */ | |
| 69 #define PTR_ID (('p' << 8) + 't') /* pointer block id */ | |
| 70 #define BLOCK0_ID0 'b' /* block 0 id 0 */ | |
| 71 #define BLOCK0_ID1 '0' /* block 0 id 1 */ | |
| 72 | |
| 73 /* | |
| 74 * pointer to a block, used in a pointer block | |
| 75 */ | |
| 76 struct pointer_entry | |
| 77 { | |
| 78 blocknr_T pe_bnum; /* block number */ | |
| 79 linenr_T pe_line_count; /* number of lines in this branch */ | |
| 80 linenr_T pe_old_lnum; /* lnum for this block (for recovery) */ | |
| 81 int pe_page_count; /* number of pages in block pe_bnum */ | |
| 82 }; | |
| 83 | |
| 84 /* | |
| 85 * A pointer block contains a list of branches in the tree. | |
| 86 */ | |
| 87 struct pointer_block | |
| 88 { | |
| 89 short_u pb_id; /* ID for pointer block: PTR_ID */ | |
| 90 short_u pb_count; /* number of pointer in this block */ | |
| 91 short_u pb_count_max; /* maximum value for pb_count */ | |
| 92 PTR_EN pb_pointer[1]; /* list of pointers to blocks (actually longer) | |
| 93 * followed by empty space until end of page */ | |
| 94 }; | |
| 95 | |
| 96 /* | |
| 97 * A data block is a leaf in the tree. | |
| 98 * | |
| 99 * The text of the lines is at the end of the block. The text of the first line | |
| 100 * in the block is put at the end, the text of the second line in front of it, | |
| 101 * etc. Thus the order of the lines is the opposite of the line number. | |
| 102 */ | |
| 103 struct data_block | |
| 104 { | |
| 105 short_u db_id; /* ID for data block: DATA_ID */ | |
| 106 unsigned db_free; /* free space available */ | |
| 107 unsigned db_txt_start; /* byte where text starts */ | |
| 108 unsigned db_txt_end; /* byte just after data block */ | |
| 109 linenr_T db_line_count; /* number of lines in this block */ | |
| 110 unsigned db_index[1]; /* index for start of line (actually bigger) | |
| 111 * followed by empty space upto db_txt_start | |
| 112 * followed by the text in the lines until | |
| 113 * end of page */ | |
| 114 }; | |
| 115 | |
| 116 /* | |
| 117 * The low bits of db_index hold the actual index. The topmost bit is | |
| 118 * used for the global command to be able to mark a line. | |
| 119 * This method is not clean, but otherwise there would be at least one extra | |
| 120 * byte used for each line. | |
| 121 * The mark has to be in this place to keep it with the correct line when other | |
| 122 * lines are inserted or deleted. | |
| 123 */ | |
| 124 #define DB_MARKED ((unsigned)1 << ((sizeof(unsigned) * 8) - 1)) | |
| 125 #define DB_INDEX_MASK (~DB_MARKED) | |
| 126 | |
| 127 #define INDEX_SIZE (sizeof(unsigned)) /* size of one db_index entry */ | |
| 128 #define HEADER_SIZE (sizeof(DATA_BL) - INDEX_SIZE) /* size of data block header */ | |
| 129 | |
| 39 | 130 #define B0_FNAME_SIZE_ORG 900 /* what it was in older versions */ |
| 131 #define B0_FNAME_SIZE 898 | |
| 132 #define B0_UNAME_SIZE 40 | |
| 133 #define B0_HNAME_SIZE 40 | |
| 7 | 134 /* |
| 135 * Restrict the numbers to 32 bits, otherwise most compilers will complain. | |
| 136 * This won't detect a 64 bit machine that only swaps a byte in the top 32 | |
| 137 * bits, but that is crazy anyway. | |
| 138 */ | |
| 139 #define B0_MAGIC_LONG 0x30313233L | |
| 140 #define B0_MAGIC_INT 0x20212223L | |
| 141 #define B0_MAGIC_SHORT 0x10111213L | |
| 142 #define B0_MAGIC_CHAR 0x55 | |
| 143 | |
| 144 /* | |
| 145 * Block zero holds all info about the swap file. | |
| 146 * | |
| 147 * NOTE: DEFINITION OF BLOCK 0 SHOULD NOT CHANGE! It would make all existing | |
| 148 * swap files unusable! | |
| 149 * | |
| 150 * If size of block0 changes anyway, adjust MIN_SWAP_PAGE_SIZE in vim.h!! | |
| 151 * | |
| 1228 | 152 * This block is built up of single bytes, to make it portable across |
| 7 | 153 * different machines. b0_magic_* is used to check the byte order and size of |
| 154 * variables, because the rest of the swap file is not portable. | |
| 155 */ | |
| 156 struct block0 | |
| 157 { | |
| 158 char_u b0_id[2]; /* id for block 0: BLOCK0_ID0 and BLOCK0_ID1 */ | |
| 159 char_u b0_version[10]; /* Vim version string */ | |
| 160 char_u b0_page_size[4];/* number of bytes per page */ | |
| 161 char_u b0_mtime[4]; /* last modification time of file */ | |
| 162 char_u b0_ino[4]; /* inode of b0_fname */ | |
| 163 char_u b0_pid[4]; /* process id of creator (or 0) */ | |
| 164 char_u b0_uname[B0_UNAME_SIZE]; /* name of user (uid if no name) */ | |
| 165 char_u b0_hname[B0_HNAME_SIZE]; /* host name (if it has a name) */ | |
| 39 | 166 char_u b0_fname[B0_FNAME_SIZE_ORG]; /* name of file being edited */ |
| 7 | 167 long b0_magic_long; /* check for byte order of long */ |
| 168 int b0_magic_int; /* check for byte order of int */ | |
| 169 short b0_magic_short; /* check for byte order of short */ | |
| 170 char_u b0_magic_char; /* check for last char */ | |
| 171 }; | |
| 39 | 172 |
| 173 /* | |
| 625 | 174 * Note: b0_dirty and b0_flags are put at the end of the file name. For very |
| 39 | 175 * long file names in older versions of Vim they are invalid. |
| 176 * The 'fileencoding' comes before b0_flags, with a NUL in front. But only | |
| 177 * when there is room, for very long file names it's omitted. | |
| 178 */ | |
| 179 #define B0_DIRTY 0x55 | |
| 180 #define b0_dirty b0_fname[B0_FNAME_SIZE_ORG-1] | |
| 181 | |
| 182 /* | |
| 183 * The b0_flags field is new in Vim 7.0. | |
| 184 */ | |
| 185 #define b0_flags b0_fname[B0_FNAME_SIZE_ORG-2] | |
| 186 | |
| 187 /* The lowest two bits contain the fileformat. Zero means it's not set | |
| 188 * (compatible with Vim 6.x), otherwise it's EOL_UNIX + 1, EOL_DOS + 1 or | |
| 189 * EOL_MAC + 1. */ | |
| 190 #define B0_FF_MASK 3 | |
| 191 | |
| 192 /* Swap file is in directory of edited file. Used to find the file from | |
| 193 * different mount points. */ | |
| 194 #define B0_SAME_DIR 4 | |
| 195 | |
| 196 /* The 'fileencoding' is at the end of b0_fname[], with a NUL in front of it. | |
| 197 * When empty there is only the NUL. */ | |
| 198 #define B0_HAS_FENC 8 | |
| 7 | 199 |
| 200 #define STACK_INCR 5 /* nr of entries added to ml_stack at a time */ | |
| 201 | |
| 202 /* | |
| 203 * The line number where the first mark may be is remembered. | |
| 204 * If it is 0 there are no marks at all. | |
| 205 * (always used for the current buffer only, no buffer change possible while | |
| 206 * executing a global command). | |
| 207 */ | |
| 208 static linenr_T lowest_marked = 0; | |
| 209 | |
| 210 /* | |
| 211 * arguments for ml_find_line() | |
| 212 */ | |
| 213 #define ML_DELETE 0x11 /* delete line */ | |
| 214 #define ML_INSERT 0x12 /* insert line */ | |
| 215 #define ML_FIND 0x13 /* just find the line */ | |
| 216 #define ML_FLUSH 0x02 /* flush locked block */ | |
| 217 #define ML_SIMPLE(x) (x & 0x10) /* DEL, INS or FIND */ | |
| 218 | |
| 944 | 219 static void ml_upd_block0 __ARGS((buf_T *buf, int set_fname)); |
| 7 | 220 static void set_b0_fname __ARGS((ZERO_BL *, buf_T *buf)); |
| 39 | 221 static void set_b0_dir_flag __ARGS((ZERO_BL *b0p, buf_T *buf)); |
| 222 #ifdef FEAT_MBYTE | |
| 223 static void add_b0_fenc __ARGS((ZERO_BL *b0p, buf_T *buf)); | |
| 224 #endif | |
| 7 | 225 static time_t swapfile_info __ARGS((char_u *)); |
| 226 static int recov_file_names __ARGS((char_u **, char_u *, int prepend_dot)); | |
| 227 static int ml_append_int __ARGS((buf_T *, linenr_T, char_u *, colnr_T, int, int)); | |
| 228 static int ml_delete_int __ARGS((buf_T *, linenr_T, int)); | |
| 229 static char_u *findswapname __ARGS((buf_T *, char_u **, char_u *)); | |
| 230 static void ml_flush_line __ARGS((buf_T *)); | |
| 231 static bhdr_T *ml_new_data __ARGS((memfile_T *, int, int)); | |
| 232 static bhdr_T *ml_new_ptr __ARGS((memfile_T *)); | |
| 233 static bhdr_T *ml_find_line __ARGS((buf_T *, linenr_T, int)); | |
| 234 static int ml_add_stack __ARGS((buf_T *)); | |
| 235 static void ml_lineadd __ARGS((buf_T *, int)); | |
| 236 static int b0_magic_wrong __ARGS((ZERO_BL *)); | |
| 237 #ifdef CHECK_INODE | |
| 238 static int fnamecmp_ino __ARGS((char_u *, char_u *, long)); | |
| 239 #endif | |
| 240 static void long_to_char __ARGS((long, char_u *)); | |
| 241 static long char_to_long __ARGS((char_u *)); | |
| 242 #if defined(UNIX) || defined(WIN3264) | |
| 243 static char_u *make_percent_swname __ARGS((char_u *dir, char_u *name)); | |
| 244 #endif | |
| 245 #ifdef FEAT_BYTEOFF | |
| 246 static void ml_updatechunk __ARGS((buf_T *buf, long line, long len, int updtype)); | |
| 247 #endif | |
|
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248 #ifdef HAVE_READLINK |
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249 static int resolve_symlink __ARGS((char_u *fname, char_u *buf)); |
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250 #endif |
| 7 | 251 |
| 252 /* | |
| 625 | 253 * Open a new memline for "buf". |
| 7 | 254 * |
| 625 | 255 * Return FAIL for failure, OK otherwise. |
| 7 | 256 */ |
| 257 int | |
| 625 | 258 ml_open(buf) |
| 259 buf_T *buf; | |
| 7 | 260 { |
| 261 memfile_T *mfp; | |
| 262 bhdr_T *hp = NULL; | |
| 263 ZERO_BL *b0p; | |
| 264 PTR_BL *pp; | |
| 265 DATA_BL *dp; | |
| 266 | |
| 625 | 267 /* |
| 268 * init fields in memline struct | |
| 269 */ | |
| 270 buf->b_ml.ml_stack_size = 0; /* no stack yet */ | |
| 271 buf->b_ml.ml_stack = NULL; /* no stack yet */ | |
| 272 buf->b_ml.ml_stack_top = 0; /* nothing in the stack */ | |
| 273 buf->b_ml.ml_locked = NULL; /* no cached block */ | |
| 274 buf->b_ml.ml_line_lnum = 0; /* no cached line */ | |
| 7 | 275 #ifdef FEAT_BYTEOFF |
| 625 | 276 buf->b_ml.ml_chunksize = NULL; |
| 7 | 277 #endif |
| 278 | |
| 625 | 279 /* |
| 280 * When 'updatecount' is non-zero swap file may be opened later. | |
| 281 */ | |
| 282 if (p_uc && buf->b_p_swf) | |
| 283 buf->b_may_swap = TRUE; | |
| 7 | 284 else |
| 625 | 285 buf->b_may_swap = FALSE; |
| 286 | |
| 287 /* | |
| 288 * Open the memfile. No swap file is created yet. | |
| 289 */ | |
| 7 | 290 mfp = mf_open(NULL, 0); |
| 291 if (mfp == NULL) | |
| 292 goto error; | |
| 293 | |
| 625 | 294 buf->b_ml.ml_mfp = mfp; |
| 295 buf->b_ml.ml_flags = ML_EMPTY; | |
| 296 buf->b_ml.ml_line_count = 1; | |
| 13 | 297 #ifdef FEAT_LINEBREAK |
| 298 curwin->w_nrwidth_line_count = 0; | |
| 299 #endif | |
| 7 | 300 |
| 301 #if defined(MSDOS) && !defined(DJGPP) | |
| 302 /* for 16 bit MS-DOS create a swapfile now, because we run out of | |
| 303 * memory very quickly */ | |
| 304 if (p_uc != 0) | |
| 625 | 305 ml_open_file(buf); |
| 7 | 306 #endif |
| 307 | |
| 308 /* | |
| 309 * fill block0 struct and write page 0 | |
| 310 */ | |
| 311 if ((hp = mf_new(mfp, FALSE, 1)) == NULL) | |
| 312 goto error; | |
| 313 if (hp->bh_bnum != 0) | |
| 314 { | |
| 315 EMSG(_("E298: Didn't get block nr 0?")); | |
| 316 goto error; | |
| 317 } | |
| 318 b0p = (ZERO_BL *)(hp->bh_data); | |
| 319 | |
| 320 b0p->b0_id[0] = BLOCK0_ID0; | |
| 321 b0p->b0_id[1] = BLOCK0_ID1; | |
| 322 b0p->b0_magic_long = (long)B0_MAGIC_LONG; | |
| 323 b0p->b0_magic_int = (int)B0_MAGIC_INT; | |
| 324 b0p->b0_magic_short = (short)B0_MAGIC_SHORT; | |
| 325 b0p->b0_magic_char = B0_MAGIC_CHAR; | |
| 326 STRNCPY(b0p->b0_version, "VIM ", 4); | |
| 327 STRNCPY(b0p->b0_version + 4, Version, 6); | |
| 328 long_to_char((long)mfp->mf_page_size, b0p->b0_page_size); | |
| 625 | 329 |
| 800 | 330 #ifdef FEAT_SPELL |
| 331 if (!buf->b_spell) | |
| 332 #endif | |
| 625 | 333 { |
| 334 b0p->b0_dirty = buf->b_changed ? B0_DIRTY : 0; | |
| 335 b0p->b0_flags = get_fileformat(buf) + 1; | |
| 336 set_b0_fname(b0p, buf); | |
| 337 (void)get_user_name(b0p->b0_uname, B0_UNAME_SIZE); | |
| 338 b0p->b0_uname[B0_UNAME_SIZE - 1] = NUL; | |
| 339 mch_get_host_name(b0p->b0_hname, B0_HNAME_SIZE); | |
| 340 b0p->b0_hname[B0_HNAME_SIZE - 1] = NUL; | |
| 341 long_to_char(mch_get_pid(), b0p->b0_pid); | |
| 342 } | |
| 7 | 343 |
| 344 /* | |
| 345 * Always sync block number 0 to disk, so we can check the file name in | |
| 625 | 346 * the swap file in findswapname(). Don't do this for help files though |
| 347 * and spell buffer though. | |
| 7 | 348 * Only works when there's a swapfile, otherwise it's done when the file |
| 349 * is created. | |
| 350 */ | |
| 351 mf_put(mfp, hp, TRUE, FALSE); | |
| 625 | 352 if (!buf->b_help && !B_SPELL(buf)) |
| 7 | 353 (void)mf_sync(mfp, 0); |
| 354 | |
| 625 | 355 /* |
| 356 * Fill in root pointer block and write page 1. | |
| 357 */ | |
| 7 | 358 if ((hp = ml_new_ptr(mfp)) == NULL) |
| 359 goto error; | |
| 360 if (hp->bh_bnum != 1) | |
| 361 { | |
| 362 EMSG(_("E298: Didn't get block nr 1?")); | |
| 363 goto error; | |
| 364 } | |
| 365 pp = (PTR_BL *)(hp->bh_data); | |
| 366 pp->pb_count = 1; | |
| 367 pp->pb_pointer[0].pe_bnum = 2; | |
| 368 pp->pb_pointer[0].pe_page_count = 1; | |
| 369 pp->pb_pointer[0].pe_old_lnum = 1; | |
| 370 pp->pb_pointer[0].pe_line_count = 1; /* line count after insertion */ | |
| 371 mf_put(mfp, hp, TRUE, FALSE); | |
| 372 | |
| 625 | 373 /* |
| 374 * Allocate first data block and create an empty line 1. | |
| 375 */ | |
| 7 | 376 if ((hp = ml_new_data(mfp, FALSE, 1)) == NULL) |
| 377 goto error; | |
| 378 if (hp->bh_bnum != 2) | |
| 379 { | |
| 380 EMSG(_("E298: Didn't get block nr 2?")); | |
| 381 goto error; | |
| 382 } | |
| 383 | |
| 384 dp = (DATA_BL *)(hp->bh_data); | |
| 385 dp->db_index[0] = --dp->db_txt_start; /* at end of block */ | |
| 386 dp->db_free -= 1 + INDEX_SIZE; | |
| 387 dp->db_line_count = 1; | |
| 2003 | 388 *((char_u *)dp + dp->db_txt_start) = NUL; /* empty line */ |
| 7 | 389 |
| 390 return OK; | |
| 391 | |
| 392 error: | |
| 393 if (mfp != NULL) | |
| 394 { | |
| 395 if (hp) | |
| 396 mf_put(mfp, hp, FALSE, FALSE); | |
| 397 mf_close(mfp, TRUE); /* will also free(mfp->mf_fname) */ | |
| 398 } | |
| 625 | 399 buf->b_ml.ml_mfp = NULL; |
| 7 | 400 return FAIL; |
| 401 } | |
| 402 | |
| 403 /* | |
| 404 * ml_setname() is called when the file name of "buf" has been changed. | |
| 405 * It may rename the swap file. | |
| 406 */ | |
| 407 void | |
| 408 ml_setname(buf) | |
| 409 buf_T *buf; | |
| 410 { | |
| 411 int success = FALSE; | |
| 412 memfile_T *mfp; | |
| 413 char_u *fname; | |
| 414 char_u *dirp; | |
| 415 #if defined(MSDOS) || defined(MSWIN) | |
| 416 char_u *p; | |
| 417 #endif | |
| 418 | |
| 419 mfp = buf->b_ml.ml_mfp; | |
| 420 if (mfp->mf_fd < 0) /* there is no swap file yet */ | |
| 421 { | |
| 422 /* | |
| 423 * When 'updatecount' is 0 and 'noswapfile' there is no swap file. | |
| 424 * For help files we will make a swap file now. | |
| 425 */ | |
| 426 if (p_uc != 0) | |
| 427 ml_open_file(buf); /* create a swap file */ | |
| 428 return; | |
| 429 } | |
| 430 | |
| 431 /* | |
| 432 * Try all directories in the 'directory' option. | |
| 433 */ | |
| 434 dirp = p_dir; | |
| 435 for (;;) | |
| 436 { | |
| 437 if (*dirp == NUL) /* tried all directories, fail */ | |
| 438 break; | |
| 43 | 439 fname = findswapname(buf, &dirp, mfp->mf_fname); |
| 440 /* alloc's fname */ | |
| 7 | 441 if (fname == NULL) /* no file name found for this dir */ |
| 442 continue; | |
| 443 | |
| 444 #if defined(MSDOS) || defined(MSWIN) | |
| 445 /* | |
| 446 * Set full pathname for swap file now, because a ":!cd dir" may | |
| 447 * change directory without us knowing it. | |
| 448 */ | |
| 449 p = FullName_save(fname, FALSE); | |
| 450 vim_free(fname); | |
| 451 fname = p; | |
| 452 if (fname == NULL) | |
| 453 continue; | |
| 454 #endif | |
| 455 /* if the file name is the same we don't have to do anything */ | |
| 456 if (fnamecmp(fname, mfp->mf_fname) == 0) | |
| 457 { | |
| 458 vim_free(fname); | |
| 459 success = TRUE; | |
| 460 break; | |
| 461 } | |
| 462 /* need to close the swap file before renaming */ | |
| 463 if (mfp->mf_fd >= 0) | |
| 464 { | |
| 465 close(mfp->mf_fd); | |
| 466 mfp->mf_fd = -1; | |
| 467 } | |
| 468 | |
| 469 /* try to rename the swap file */ | |
| 470 if (vim_rename(mfp->mf_fname, fname) == 0) | |
| 471 { | |
| 472 success = TRUE; | |
| 473 vim_free(mfp->mf_fname); | |
| 474 mfp->mf_fname = fname; | |
| 475 vim_free(mfp->mf_ffname); | |
| 476 #if defined(MSDOS) || defined(MSWIN) | |
| 477 mfp->mf_ffname = NULL; /* mf_fname is full pathname already */ | |
| 478 #else | |
| 479 mf_set_ffname(mfp); | |
| 480 #endif | |
| 39 | 481 ml_upd_block0(buf, FALSE); |
| 7 | 482 break; |
| 483 } | |
| 484 vim_free(fname); /* this fname didn't work, try another */ | |
| 485 } | |
| 486 | |
| 487 if (mfp->mf_fd == -1) /* need to (re)open the swap file */ | |
| 488 { | |
| 489 mfp->mf_fd = mch_open((char *)mfp->mf_fname, O_RDWR | O_EXTRA, 0); | |
| 490 if (mfp->mf_fd < 0) | |
| 491 { | |
| 492 /* could not (re)open the swap file, what can we do???? */ | |
| 493 EMSG(_("E301: Oops, lost the swap file!!!")); | |
| 494 return; | |
| 495 } | |
| 2003 | 496 #ifdef HAVE_FD_CLOEXEC |
| 497 { | |
| 498 int fdflags = fcntl(mfp->mf_fd, F_GETFD); | |
| 499 if (fdflags >= 0 && (fdflags & FD_CLOEXEC) == 0) | |
| 500 fcntl(mfp->mf_fd, F_SETFD, fdflags | FD_CLOEXEC); | |
| 501 } | |
| 502 #endif | |
| 7 | 503 } |
| 504 if (!success) | |
| 505 EMSG(_("E302: Could not rename swap file")); | |
| 506 } | |
| 507 | |
| 508 /* | |
| 509 * Open a file for the memfile for all buffers that are not readonly or have | |
| 510 * been modified. | |
| 511 * Used when 'updatecount' changes from zero to non-zero. | |
| 512 */ | |
| 513 void | |
| 514 ml_open_files() | |
| 515 { | |
| 516 buf_T *buf; | |
| 517 | |
| 518 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
| 519 if (!buf->b_p_ro || buf->b_changed) | |
| 520 ml_open_file(buf); | |
| 521 } | |
| 522 | |
| 523 /* | |
| 524 * Open a swap file for an existing memfile, if there is no swap file yet. | |
| 525 * If we are unable to find a file name, mf_fname will be NULL | |
| 526 * and the memfile will be in memory only (no recovery possible). | |
| 527 */ | |
| 528 void | |
| 529 ml_open_file(buf) | |
| 530 buf_T *buf; | |
| 531 { | |
| 532 memfile_T *mfp; | |
| 533 char_u *fname; | |
| 534 char_u *dirp; | |
| 535 | |
| 536 mfp = buf->b_ml.ml_mfp; | |
| 537 if (mfp == NULL || mfp->mf_fd >= 0 || !buf->b_p_swf) | |
| 538 return; /* nothing to do */ | |
| 539 | |
| 748 | 540 #ifdef FEAT_SPELL |
| 625 | 541 /* For a spell buffer use a temp file name. */ |
| 542 if (buf->b_spell) | |
| 543 { | |
| 544 fname = vim_tempname('s'); | |
| 545 if (fname != NULL) | |
| 546 (void)mf_open_file(mfp, fname); /* consumes fname! */ | |
| 547 buf->b_may_swap = FALSE; | |
| 548 return; | |
| 549 } | |
| 550 #endif | |
| 551 | |
| 7 | 552 /* |
| 553 * Try all directories in 'directory' option. | |
| 554 */ | |
| 555 dirp = p_dir; | |
| 556 for (;;) | |
| 557 { | |
| 558 if (*dirp == NUL) | |
| 559 break; | |
| 560 /* There is a small chance that between chosing the swap file name and | |
| 561 * creating it, another Vim creates the file. In that case the | |
| 562 * creation will fail and we will use another directory. */ | |
| 43 | 563 fname = findswapname(buf, &dirp, NULL); /* allocates fname */ |
| 7 | 564 if (fname == NULL) |
| 565 continue; | |
| 566 if (mf_open_file(mfp, fname) == OK) /* consumes fname! */ | |
| 567 { | |
| 568 #if defined(MSDOS) || defined(MSWIN) || defined(RISCOS) | |
| 569 /* | |
| 570 * set full pathname for swap file now, because a ":!cd dir" may | |
| 571 * change directory without us knowing it. | |
| 572 */ | |
| 573 mf_fullname(mfp); | |
| 574 #endif | |
| 39 | 575 ml_upd_block0(buf, FALSE); |
| 576 | |
| 7 | 577 /* Flush block zero, so others can read it */ |
| 578 if (mf_sync(mfp, MFS_ZERO) == OK) | |
| 630 | 579 { |
| 580 /* Mark all blocks that should be in the swapfile as dirty. | |
| 581 * Needed for when the 'swapfile' option was reset, so that | |
| 582 * the swap file was deleted, and then on again. */ | |
| 583 mf_set_dirty(mfp); | |
| 7 | 584 break; |
| 630 | 585 } |
| 7 | 586 /* Writing block 0 failed: close the file and try another dir */ |
| 587 mf_close_file(buf, FALSE); | |
| 588 } | |
| 589 } | |
| 590 | |
| 591 if (mfp->mf_fname == NULL) /* Failed! */ | |
| 592 { | |
| 593 need_wait_return = TRUE; /* call wait_return later */ | |
| 594 ++no_wait_return; | |
| 595 (void)EMSG2(_("E303: Unable to open swap file for \"%s\", recovery impossible"), | |
| 596 buf_spname(buf) != NULL | |
| 597 ? (char_u *)buf_spname(buf) | |
| 598 : buf->b_fname); | |
| 599 --no_wait_return; | |
| 600 } | |
| 601 | |
| 602 /* don't try to open a swap file again */ | |
| 603 buf->b_may_swap = FALSE; | |
| 604 } | |
| 605 | |
| 606 /* | |
| 607 * If still need to create a swap file, and starting to edit a not-readonly | |
| 608 * file, or reading into an existing buffer, create a swap file now. | |
| 609 */ | |
| 610 void | |
| 611 check_need_swap(newfile) | |
| 612 int newfile; /* reading file into new buffer */ | |
| 613 { | |
| 614 if (curbuf->b_may_swap && (!curbuf->b_p_ro || !newfile)) | |
| 615 ml_open_file(curbuf); | |
| 616 } | |
| 617 | |
| 618 /* | |
| 619 * Close memline for buffer 'buf'. | |
| 620 * If 'del_file' is TRUE, delete the swap file | |
| 621 */ | |
| 622 void | |
| 623 ml_close(buf, del_file) | |
| 624 buf_T *buf; | |
| 625 int del_file; | |
| 626 { | |
| 627 if (buf->b_ml.ml_mfp == NULL) /* not open */ | |
| 628 return; | |
| 629 mf_close(buf->b_ml.ml_mfp, del_file); /* close the .swp file */ | |
| 630 if (buf->b_ml.ml_line_lnum != 0 && (buf->b_ml.ml_flags & ML_LINE_DIRTY)) | |
| 631 vim_free(buf->b_ml.ml_line_ptr); | |
| 632 vim_free(buf->b_ml.ml_stack); | |
| 633 #ifdef FEAT_BYTEOFF | |
| 634 vim_free(buf->b_ml.ml_chunksize); | |
| 635 buf->b_ml.ml_chunksize = NULL; | |
| 636 #endif | |
| 637 buf->b_ml.ml_mfp = NULL; | |
| 638 | |
| 639 /* Reset the "recovered" flag, give the ATTENTION prompt the next time | |
| 640 * this buffer is loaded. */ | |
| 641 buf->b_flags &= ~BF_RECOVERED; | |
| 642 } | |
| 643 | |
| 644 /* | |
| 645 * Close all existing memlines and memfiles. | |
| 646 * Only used when exiting. | |
| 647 * When 'del_file' is TRUE, delete the memfiles. | |
| 165 | 648 * But don't delete files that were ":preserve"d when we are POSIX compatible. |
| 7 | 649 */ |
| 650 void | |
| 651 ml_close_all(del_file) | |
| 652 int del_file; | |
| 653 { | |
| 654 buf_T *buf; | |
| 655 | |
| 656 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
| 165 | 657 ml_close(buf, del_file && ((buf->b_flags & BF_PRESERVED) == 0 |
| 658 || vim_strchr(p_cpo, CPO_PRESERVE) == NULL)); | |
| 7 | 659 #ifdef TEMPDIRNAMES |
| 660 vim_deltempdir(); /* delete created temp directory */ | |
| 661 #endif | |
| 662 } | |
| 663 | |
| 664 /* | |
| 665 * Close all memfiles for not modified buffers. | |
| 666 * Only use just before exiting! | |
| 667 */ | |
| 668 void | |
| 669 ml_close_notmod() | |
| 670 { | |
| 671 buf_T *buf; | |
| 672 | |
| 673 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
| 674 if (!bufIsChanged(buf)) | |
| 675 ml_close(buf, TRUE); /* close all not-modified buffers */ | |
| 676 } | |
| 677 | |
| 678 /* | |
| 679 * Update the timestamp in the .swp file. | |
| 680 * Used when the file has been written. | |
| 681 */ | |
| 682 void | |
| 683 ml_timestamp(buf) | |
| 684 buf_T *buf; | |
| 685 { | |
| 39 | 686 ml_upd_block0(buf, TRUE); |
| 687 } | |
| 688 | |
| 689 /* | |
| 690 * Update the timestamp or the B0_SAME_DIR flag of the .swp file. | |
| 691 */ | |
| 692 static void | |
| 944 | 693 ml_upd_block0(buf, set_fname) |
| 39 | 694 buf_T *buf; |
| 944 | 695 int set_fname; |
| 39 | 696 { |
| 7 | 697 memfile_T *mfp; |
| 698 bhdr_T *hp; | |
| 699 ZERO_BL *b0p; | |
| 700 | |
| 701 mfp = buf->b_ml.ml_mfp; | |
| 702 if (mfp == NULL || (hp = mf_get(mfp, (blocknr_T)0, 1)) == NULL) | |
| 703 return; | |
| 704 b0p = (ZERO_BL *)(hp->bh_data); | |
| 705 if (b0p->b0_id[0] != BLOCK0_ID0 || b0p->b0_id[1] != BLOCK0_ID1) | |
| 39 | 706 EMSG(_("E304: ml_upd_block0(): Didn't get block 0??")); |
| 7 | 707 else |
| 39 | 708 { |
| 944 | 709 if (set_fname) |
| 39 | 710 set_b0_fname(b0p, buf); |
| 711 else | |
| 712 set_b0_dir_flag(b0p, buf); | |
| 713 } | |
| 7 | 714 mf_put(mfp, hp, TRUE, FALSE); |
| 715 } | |
| 716 | |
| 717 /* | |
| 718 * Write file name and timestamp into block 0 of a swap file. | |
| 719 * Also set buf->b_mtime. | |
| 720 * Don't use NameBuff[]!!! | |
| 721 */ | |
| 722 static void | |
| 723 set_b0_fname(b0p, buf) | |
| 724 ZERO_BL *b0p; | |
| 725 buf_T *buf; | |
| 726 { | |
| 727 struct stat st; | |
| 728 | |
| 729 if (buf->b_ffname == NULL) | |
| 730 b0p->b0_fname[0] = NUL; | |
| 731 else | |
| 732 { | |
| 733 #if defined(MSDOS) || defined(MSWIN) || defined(AMIGA) || defined(RISCOS) | |
| 39 | 734 /* Systems that cannot translate "~user" back into a path: copy the |
| 735 * file name unmodified. Do use slashes instead of backslashes for | |
| 736 * portability. */ | |
| 419 | 737 vim_strncpy(b0p->b0_fname, buf->b_ffname, B0_FNAME_SIZE - 1); |
| 39 | 738 # ifdef BACKSLASH_IN_FILENAME |
| 739 forward_slash(b0p->b0_fname); | |
| 740 # endif | |
| 7 | 741 #else |
| 742 size_t flen, ulen; | |
| 743 char_u uname[B0_UNAME_SIZE]; | |
| 744 | |
| 745 /* | |
| 746 * For a file under the home directory of the current user, we try to | |
| 747 * replace the home directory path with "~user". This helps when | |
| 748 * editing the same file on different machines over a network. | |
| 749 * First replace home dir path with "~/" with home_replace(). | |
| 750 * Then insert the user name to get "~user/". | |
| 751 */ | |
| 752 home_replace(NULL, buf->b_ffname, b0p->b0_fname, B0_FNAME_SIZE, TRUE); | |
| 753 if (b0p->b0_fname[0] == '~') | |
| 754 { | |
| 755 flen = STRLEN(b0p->b0_fname); | |
| 756 /* If there is no user name or it is too long, don't use "~/" */ | |
| 757 if (get_user_name(uname, B0_UNAME_SIZE) == FAIL | |
| 758 || (ulen = STRLEN(uname)) + flen > B0_FNAME_SIZE - 1) | |
| 419 | 759 vim_strncpy(b0p->b0_fname, buf->b_ffname, B0_FNAME_SIZE - 1); |
| 7 | 760 else |
| 761 { | |
| 762 mch_memmove(b0p->b0_fname + ulen + 1, b0p->b0_fname + 1, flen); | |
| 763 mch_memmove(b0p->b0_fname + 1, uname, ulen); | |
| 764 } | |
| 765 } | |
| 766 #endif | |
| 767 if (mch_stat((char *)buf->b_ffname, &st) >= 0) | |
| 768 { | |
| 769 long_to_char((long)st.st_mtime, b0p->b0_mtime); | |
| 770 #ifdef CHECK_INODE | |
| 771 long_to_char((long)st.st_ino, b0p->b0_ino); | |
| 772 #endif | |
| 773 buf_store_time(buf, &st, buf->b_ffname); | |
| 774 buf->b_mtime_read = buf->b_mtime; | |
| 775 } | |
| 776 else | |
| 777 { | |
| 778 long_to_char(0L, b0p->b0_mtime); | |
| 779 #ifdef CHECK_INODE | |
| 780 long_to_char(0L, b0p->b0_ino); | |
| 781 #endif | |
| 782 buf->b_mtime = 0; | |
| 783 buf->b_mtime_read = 0; | |
| 784 buf->b_orig_size = 0; | |
| 785 buf->b_orig_mode = 0; | |
| 786 } | |
| 787 } | |
| 39 | 788 |
| 789 #ifdef FEAT_MBYTE | |
| 790 /* Also add the 'fileencoding' if there is room. */ | |
| 791 add_b0_fenc(b0p, curbuf); | |
| 792 #endif | |
| 7 | 793 } |
| 794 | |
| 795 /* | |
| 39 | 796 * Update the B0_SAME_DIR flag of the swap file. It's set if the file and the |
| 797 * swapfile for "buf" are in the same directory. | |
| 798 * This is fail safe: if we are not sure the directories are equal the flag is | |
| 799 * not set. | |
| 800 */ | |
| 801 static void | |
| 802 set_b0_dir_flag(b0p, buf) | |
| 803 ZERO_BL *b0p; | |
| 804 buf_T *buf; | |
| 805 { | |
| 806 if (same_directory(buf->b_ml.ml_mfp->mf_fname, buf->b_ffname)) | |
| 807 b0p->b0_flags |= B0_SAME_DIR; | |
| 808 else | |
| 809 b0p->b0_flags &= ~B0_SAME_DIR; | |
| 810 } | |
| 811 | |
| 812 #ifdef FEAT_MBYTE | |
| 813 /* | |
| 814 * When there is room, add the 'fileencoding' to block zero. | |
| 815 */ | |
| 816 static void | |
| 817 add_b0_fenc(b0p, buf) | |
| 818 ZERO_BL *b0p; | |
| 819 buf_T *buf; | |
| 820 { | |
| 821 int n; | |
| 822 | |
| 835 | 823 n = (int)STRLEN(buf->b_p_fenc); |
| 39 | 824 if (STRLEN(b0p->b0_fname) + n + 1 > B0_FNAME_SIZE) |
| 825 b0p->b0_flags &= ~B0_HAS_FENC; | |
| 826 else | |
| 827 { | |
| 828 mch_memmove((char *)b0p->b0_fname + B0_FNAME_SIZE - n, | |
| 829 (char *)buf->b_p_fenc, (size_t)n); | |
| 830 *(b0p->b0_fname + B0_FNAME_SIZE - n - 1) = NUL; | |
| 831 b0p->b0_flags |= B0_HAS_FENC; | |
| 832 } | |
| 833 } | |
| 834 #endif | |
| 835 | |
| 836 | |
| 837 /* | |
| 7 | 838 * try to recover curbuf from the .swp file |
| 839 */ | |
| 840 void | |
| 841 ml_recover() | |
| 842 { | |
| 843 buf_T *buf = NULL; | |
| 844 memfile_T *mfp = NULL; | |
| 845 char_u *fname; | |
| 846 bhdr_T *hp = NULL; | |
| 847 ZERO_BL *b0p; | |
| 39 | 848 int b0_ff; |
| 849 char_u *b0_fenc = NULL; | |
| 7 | 850 PTR_BL *pp; |
| 851 DATA_BL *dp; | |
| 852 infoptr_T *ip; | |
| 853 blocknr_T bnum; | |
| 854 int page_count; | |
| 855 struct stat org_stat, swp_stat; | |
| 856 int len; | |
| 857 int directly; | |
| 858 linenr_T lnum; | |
| 859 char_u *p; | |
| 860 int i; | |
| 861 long error; | |
| 862 int cannot_open; | |
| 863 linenr_T line_count; | |
| 864 int has_error; | |
| 865 int idx; | |
| 866 int top; | |
| 867 int txt_start; | |
| 868 off_t size; | |
| 869 int called_from_main; | |
| 870 int serious_error = TRUE; | |
| 871 long mtime; | |
| 872 int attr; | |
| 873 | |
| 874 recoverymode = TRUE; | |
| 875 called_from_main = (curbuf->b_ml.ml_mfp == NULL); | |
| 876 attr = hl_attr(HLF_E); | |
| 1975 | 877 |
| 878 /* | |
| 879 * If the file name ends in ".s[uvw][a-z]" we assume this is the swap file. | |
| 880 * Otherwise a search is done to find the swap file(s). | |
| 881 */ | |
| 7 | 882 fname = curbuf->b_fname; |
| 883 if (fname == NULL) /* When there is no file name */ | |
| 884 fname = (char_u *)""; | |
| 885 len = (int)STRLEN(fname); | |
| 886 if (len >= 4 && | |
| 887 #if defined(VMS) || defined(RISCOS) | |
| 1975 | 888 STRNICMP(fname + len - 4, "_s" , 2) |
| 7 | 889 #else |
| 1975 | 890 STRNICMP(fname + len - 4, ".s" , 2) |
| 7 | 891 #endif |
| 1975 | 892 == 0 |
| 893 && vim_strchr((char_u *)"UVWuvw", fname[len - 2]) != NULL | |
| 894 && ASCII_ISALPHA(fname[len - 1])) | |
| 7 | 895 { |
| 896 directly = TRUE; | |
| 897 fname = vim_strsave(fname); /* make a copy for mf_open() */ | |
| 898 } | |
| 899 else | |
| 900 { | |
| 901 directly = FALSE; | |
| 902 | |
| 903 /* count the number of matching swap files */ | |
| 904 len = recover_names(&fname, FALSE, 0); | |
| 905 if (len == 0) /* no swap files found */ | |
| 906 { | |
| 907 EMSG2(_("E305: No swap file found for %s"), fname); | |
| 908 goto theend; | |
| 909 } | |
| 910 if (len == 1) /* one swap file found, use it */ | |
| 911 i = 1; | |
| 912 else /* several swap files found, choose */ | |
| 913 { | |
| 914 /* list the names of the swap files */ | |
| 915 (void)recover_names(&fname, TRUE, 0); | |
| 916 msg_putchar('\n'); | |
| 917 MSG_PUTS(_("Enter number of swap file to use (0 to quit): ")); | |
| 374 | 918 i = get_number(FALSE, NULL); |
| 7 | 919 if (i < 1 || i > len) |
| 920 goto theend; | |
| 921 } | |
| 922 /* get the swap file name that will be used */ | |
| 923 (void)recover_names(&fname, FALSE, i); | |
| 924 } | |
| 925 if (fname == NULL) | |
| 926 goto theend; /* out of memory */ | |
| 927 | |
| 928 /* When called from main() still need to initialize storage structure */ | |
| 625 | 929 if (called_from_main && ml_open(curbuf) == FAIL) |
| 7 | 930 getout(1); |
| 931 | |
| 932 /* | |
| 933 * allocate a buffer structure (only the memline in it is really used) | |
| 934 */ | |
| 935 buf = (buf_T *)alloc((unsigned)sizeof(buf_T)); | |
| 936 if (buf == NULL) | |
| 937 { | |
| 938 vim_free(fname); | |
| 939 goto theend; | |
| 940 } | |
| 941 | |
| 942 /* | |
| 943 * init fields in memline struct | |
| 944 */ | |
| 945 buf->b_ml.ml_stack_size = 0; /* no stack yet */ | |
| 946 buf->b_ml.ml_stack = NULL; /* no stack yet */ | |
| 947 buf->b_ml.ml_stack_top = 0; /* nothing in the stack */ | |
| 948 buf->b_ml.ml_line_lnum = 0; /* no cached line */ | |
| 949 buf->b_ml.ml_locked = NULL; /* no locked block */ | |
| 950 buf->b_ml.ml_flags = 0; | |
| 951 | |
| 952 /* | |
| 953 * open the memfile from the old swap file | |
| 954 */ | |
| 955 p = vim_strsave(fname); /* save fname for the message | |
| 956 (mf_open() may free fname) */ | |
| 957 mfp = mf_open(fname, O_RDONLY); /* consumes fname! */ | |
| 958 if (mfp == NULL || mfp->mf_fd < 0) | |
| 959 { | |
| 960 if (p != NULL) | |
| 961 { | |
| 962 EMSG2(_("E306: Cannot open %s"), p); | |
| 963 vim_free(p); | |
| 964 } | |
| 965 goto theend; | |
| 966 } | |
| 967 vim_free(p); | |
| 968 buf->b_ml.ml_mfp = mfp; | |
| 969 | |
| 970 /* | |
| 971 * The page size set in mf_open() might be different from the page size | |
| 972 * used in the swap file, we must get it from block 0. But to read block | |
| 973 * 0 we need a page size. Use the minimal size for block 0 here, it will | |
| 974 * be set to the real value below. | |
| 975 */ | |
| 976 mfp->mf_page_size = MIN_SWAP_PAGE_SIZE; | |
| 977 | |
| 978 /* | |
| 979 * try to read block 0 | |
| 980 */ | |
| 981 if ((hp = mf_get(mfp, (blocknr_T)0, 1)) == NULL) | |
| 982 { | |
| 983 msg_start(); | |
| 984 MSG_PUTS_ATTR(_("Unable to read block 0 from "), attr | MSG_HIST); | |
| 985 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST); | |
| 986 MSG_PUTS_ATTR( | |
| 987 _("\nMaybe no changes were made or Vim did not update the swap file."), | |
| 988 attr | MSG_HIST); | |
| 989 msg_end(); | |
| 990 goto theend; | |
| 991 } | |
| 992 b0p = (ZERO_BL *)(hp->bh_data); | |
| 993 if (STRNCMP(b0p->b0_version, "VIM 3.0", 7) == 0) | |
| 994 { | |
| 995 msg_start(); | |
| 996 msg_outtrans_attr(mfp->mf_fname, MSG_HIST); | |
| 997 MSG_PUTS_ATTR(_(" cannot be used with this version of Vim.\n"), | |
| 998 MSG_HIST); | |
| 999 MSG_PUTS_ATTR(_("Use Vim version 3.0.\n"), MSG_HIST); | |
| 1000 msg_end(); | |
| 1001 goto theend; | |
| 1002 } | |
| 1003 if (b0p->b0_id[0] != BLOCK0_ID0 || b0p->b0_id[1] != BLOCK0_ID1) | |
| 1004 { | |
| 1005 EMSG2(_("E307: %s does not look like a Vim swap file"), mfp->mf_fname); | |
| 1006 goto theend; | |
| 1007 } | |
| 1008 if (b0_magic_wrong(b0p)) | |
| 1009 { | |
| 1010 msg_start(); | |
| 1011 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST); | |
| 1012 #if defined(MSDOS) || defined(MSWIN) | |
| 1013 if (STRNCMP(b0p->b0_hname, "PC ", 3) == 0) | |
| 1014 MSG_PUTS_ATTR(_(" cannot be used with this version of Vim.\n"), | |
| 1015 attr | MSG_HIST); | |
| 1016 else | |
| 1017 #endif | |
| 1018 MSG_PUTS_ATTR(_(" cannot be used on this computer.\n"), | |
| 1019 attr | MSG_HIST); | |
| 1020 MSG_PUTS_ATTR(_("The file was created on "), attr | MSG_HIST); | |
| 1021 /* avoid going past the end of a currupted hostname */ | |
| 1022 b0p->b0_fname[0] = NUL; | |
| 1023 MSG_PUTS_ATTR(b0p->b0_hname, attr | MSG_HIST); | |
| 1024 MSG_PUTS_ATTR(_(",\nor the file has been damaged."), attr | MSG_HIST); | |
| 1025 msg_end(); | |
| 1026 goto theend; | |
| 1027 } | |
| 1105 | 1028 |
| 7 | 1029 /* |
| 1030 * If we guessed the wrong page size, we have to recalculate the | |
| 1031 * highest block number in the file. | |
| 1032 */ | |
| 1033 if (mfp->mf_page_size != (unsigned)char_to_long(b0p->b0_page_size)) | |
| 1034 { | |
| 1105 | 1035 unsigned previous_page_size = mfp->mf_page_size; |
| 1036 | |
| 7 | 1037 mf_new_page_size(mfp, (unsigned)char_to_long(b0p->b0_page_size)); |
| 1105 | 1038 if (mfp->mf_page_size < previous_page_size) |
| 1039 { | |
| 1040 msg_start(); | |
| 1041 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST); | |
| 1042 MSG_PUTS_ATTR(_(" has been damaged (page size is smaller than minimum value).\n"), | |
| 1043 attr | MSG_HIST); | |
| 1044 msg_end(); | |
| 1045 goto theend; | |
| 1046 } | |
| 7 | 1047 if ((size = lseek(mfp->mf_fd, (off_t)0L, SEEK_END)) <= 0) |
| 1048 mfp->mf_blocknr_max = 0; /* no file or empty file */ | |
| 1049 else | |
| 1050 mfp->mf_blocknr_max = (blocknr_T)(size / mfp->mf_page_size); | |
| 1051 mfp->mf_infile_count = mfp->mf_blocknr_max; | |
| 1105 | 1052 |
| 1053 /* need to reallocate the memory used to store the data */ | |
| 1054 p = alloc(mfp->mf_page_size); | |
| 1055 if (p == NULL) | |
| 1056 goto theend; | |
| 1057 mch_memmove(p, hp->bh_data, previous_page_size); | |
| 1058 vim_free(hp->bh_data); | |
| 1059 hp->bh_data = p; | |
| 1060 b0p = (ZERO_BL *)(hp->bh_data); | |
| 7 | 1061 } |
| 1062 | |
| 1063 /* | |
| 1064 * If .swp file name given directly, use name from swap file for buffer. | |
| 1065 */ | |
| 1066 if (directly) | |
| 1067 { | |
| 1068 expand_env(b0p->b0_fname, NameBuff, MAXPATHL); | |
| 1069 if (setfname(curbuf, NameBuff, NULL, TRUE) == FAIL) | |
| 1070 goto theend; | |
| 1071 } | |
| 1072 | |
| 1073 home_replace(NULL, mfp->mf_fname, NameBuff, MAXPATHL, TRUE); | |
| 274 | 1074 smsg((char_u *)_("Using swap file \"%s\""), NameBuff); |
| 7 | 1075 |
| 1076 if (buf_spname(curbuf) != NULL) | |
| 1077 STRCPY(NameBuff, buf_spname(curbuf)); | |
| 1078 else | |
| 1079 home_replace(NULL, curbuf->b_ffname, NameBuff, MAXPATHL, TRUE); | |
| 274 | 1080 smsg((char_u *)_("Original file \"%s\""), NameBuff); |
| 7 | 1081 msg_putchar('\n'); |
| 1082 | |
| 1083 /* | |
| 1084 * check date of swap file and original file | |
| 1085 */ | |
| 1086 mtime = char_to_long(b0p->b0_mtime); | |
| 1087 if (curbuf->b_ffname != NULL | |
| 1088 && mch_stat((char *)curbuf->b_ffname, &org_stat) != -1 | |
| 1089 && ((mch_stat((char *)mfp->mf_fname, &swp_stat) != -1 | |
| 1090 && org_stat.st_mtime > swp_stat.st_mtime) | |
| 1091 || org_stat.st_mtime != mtime)) | |
| 1092 { | |
| 1093 EMSG(_("E308: Warning: Original file may have been changed")); | |
| 1094 } | |
| 1095 out_flush(); | |
| 39 | 1096 |
| 1097 /* Get the 'fileformat' and 'fileencoding' from block zero. */ | |
| 1098 b0_ff = (b0p->b0_flags & B0_FF_MASK); | |
| 1099 if (b0p->b0_flags & B0_HAS_FENC) | |
| 1100 { | |
| 1101 for (p = b0p->b0_fname + B0_FNAME_SIZE; | |
| 1102 p > b0p->b0_fname && p[-1] != NUL; --p) | |
| 1103 ; | |
| 835 | 1104 b0_fenc = vim_strnsave(p, (int)(b0p->b0_fname + B0_FNAME_SIZE - p)); |
| 39 | 1105 } |
| 1106 | |
| 7 | 1107 mf_put(mfp, hp, FALSE, FALSE); /* release block 0 */ |
| 1108 hp = NULL; | |
| 1109 | |
| 1110 /* | |
| 1111 * Now that we are sure that the file is going to be recovered, clear the | |
| 1112 * contents of the current buffer. | |
| 1113 */ | |
| 1114 while (!(curbuf->b_ml.ml_flags & ML_EMPTY)) | |
| 1115 ml_delete((linenr_T)1, FALSE); | |
| 1116 | |
| 1117 /* | |
| 1118 * Try reading the original file to obtain the values of 'fileformat', | |
| 1119 * 'fileencoding', etc. Ignore errors. The text itself is not used. | |
| 1120 */ | |
| 1121 if (curbuf->b_ffname != NULL) | |
|
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1122 { |
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1123 (void)readfile(curbuf->b_ffname, NULL, (linenr_T)0, |
| 7 | 1124 (linenr_T)0, (linenr_T)MAXLNUM, NULL, READ_NEW); |
|
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1125 while (!(curbuf->b_ml.ml_flags & ML_EMPTY)) |
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1126 ml_delete((linenr_T)1, FALSE); |
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1127 } |
| 7 | 1128 |
| 39 | 1129 /* Use the 'fileformat' and 'fileencoding' as stored in the swap file. */ |
| 1130 if (b0_ff != 0) | |
| 1131 set_fileformat(b0_ff - 1, OPT_LOCAL); | |
| 1132 if (b0_fenc != NULL) | |
| 1133 { | |
| 1134 set_option_value((char_u *)"fenc", 0L, b0_fenc, OPT_LOCAL); | |
| 1135 vim_free(b0_fenc); | |
| 1136 } | |
| 1137 unchanged(curbuf, TRUE); | |
| 1138 | |
| 7 | 1139 bnum = 1; /* start with block 1 */ |
| 1140 page_count = 1; /* which is 1 page */ | |
| 1141 lnum = 0; /* append after line 0 in curbuf */ | |
| 1142 line_count = 0; | |
| 1143 idx = 0; /* start with first index in block 1 */ | |
| 1144 error = 0; | |
| 1145 buf->b_ml.ml_stack_top = 0; | |
| 1146 buf->b_ml.ml_stack = NULL; | |
| 1147 buf->b_ml.ml_stack_size = 0; /* no stack yet */ | |
| 1148 | |
| 1149 if (curbuf->b_ffname == NULL) | |
| 1150 cannot_open = TRUE; | |
| 1151 else | |
| 1152 cannot_open = FALSE; | |
| 1153 | |
| 1154 serious_error = FALSE; | |
| 1155 for ( ; !got_int; line_breakcheck()) | |
| 1156 { | |
| 1157 if (hp != NULL) | |
| 1158 mf_put(mfp, hp, FALSE, FALSE); /* release previous block */ | |
| 1159 | |
| 1160 /* | |
| 1161 * get block | |
| 1162 */ | |
| 1163 if ((hp = mf_get(mfp, (blocknr_T)bnum, page_count)) == NULL) | |
| 1164 { | |
| 1165 if (bnum == 1) | |
| 1166 { | |
| 1167 EMSG2(_("E309: Unable to read block 1 from %s"), mfp->mf_fname); | |
| 1168 goto theend; | |
| 1169 } | |
| 1170 ++error; | |
| 1171 ml_append(lnum++, (char_u *)_("???MANY LINES MISSING"), | |
| 1172 (colnr_T)0, TRUE); | |
| 1173 } | |
| 1174 else /* there is a block */ | |
| 1175 { | |
| 1176 pp = (PTR_BL *)(hp->bh_data); | |
| 1177 if (pp->pb_id == PTR_ID) /* it is a pointer block */ | |
| 1178 { | |
| 1179 /* check line count when using pointer block first time */ | |
| 1180 if (idx == 0 && line_count != 0) | |
| 1181 { | |
| 1182 for (i = 0; i < (int)pp->pb_count; ++i) | |
| 1183 line_count -= pp->pb_pointer[i].pe_line_count; | |
| 1184 if (line_count != 0) | |
| 1185 { | |
| 1186 ++error; | |
| 1187 ml_append(lnum++, (char_u *)_("???LINE COUNT WRONG"), | |
| 1188 (colnr_T)0, TRUE); | |
| 1189 } | |
| 1190 } | |
| 1191 | |
| 1192 if (pp->pb_count == 0) | |
| 1193 { | |
| 1194 ml_append(lnum++, (char_u *)_("???EMPTY BLOCK"), | |
| 1195 (colnr_T)0, TRUE); | |
| 1196 ++error; | |
| 1197 } | |
| 1198 else if (idx < (int)pp->pb_count) /* go a block deeper */ | |
| 1199 { | |
| 1200 if (pp->pb_pointer[idx].pe_bnum < 0) | |
| 1201 { | |
| 1202 /* | |
| 1203 * Data block with negative block number. | |
| 1204 * Try to read lines from the original file. | |
| 1205 * This is slow, but it works. | |
| 1206 */ | |
| 1207 if (!cannot_open) | |
| 1208 { | |
| 1209 line_count = pp->pb_pointer[idx].pe_line_count; | |
| 1210 if (readfile(curbuf->b_ffname, NULL, lnum, | |
| 1211 pp->pb_pointer[idx].pe_old_lnum - 1, | |
| 1212 line_count, NULL, 0) == FAIL) | |
| 1213 cannot_open = TRUE; | |
| 1214 else | |
| 1215 lnum += line_count; | |
| 1216 } | |
| 1217 if (cannot_open) | |
| 1218 { | |
| 1219 ++error; | |
| 1220 ml_append(lnum++, (char_u *)_("???LINES MISSING"), | |
| 1221 (colnr_T)0, TRUE); | |
| 1222 } | |
| 1223 ++idx; /* get same block again for next index */ | |
| 1224 continue; | |
| 1225 } | |
| 1226 | |
| 1227 /* | |
| 1228 * going one block deeper in the tree | |
| 1229 */ | |
| 1230 if ((top = ml_add_stack(buf)) < 0) /* new entry in stack */ | |
| 1231 { | |
| 1232 ++error; | |
| 1233 break; /* out of memory */ | |
| 1234 } | |
| 1235 ip = &(buf->b_ml.ml_stack[top]); | |
| 1236 ip->ip_bnum = bnum; | |
| 1237 ip->ip_index = idx; | |
| 1238 | |
| 1239 bnum = pp->pb_pointer[idx].pe_bnum; | |
| 1240 line_count = pp->pb_pointer[idx].pe_line_count; | |
| 1241 page_count = pp->pb_pointer[idx].pe_page_count; | |
| 1242 continue; | |
| 1243 } | |
| 1244 } | |
| 1245 else /* not a pointer block */ | |
| 1246 { | |
| 1247 dp = (DATA_BL *)(hp->bh_data); | |
| 1248 if (dp->db_id != DATA_ID) /* block id wrong */ | |
| 1249 { | |
| 1250 if (bnum == 1) | |
| 1251 { | |
| 1252 EMSG2(_("E310: Block 1 ID wrong (%s not a .swp file?)"), | |
| 1253 mfp->mf_fname); | |
| 1254 goto theend; | |
| 1255 } | |
| 1256 ++error; | |
| 1257 ml_append(lnum++, (char_u *)_("???BLOCK MISSING"), | |
| 1258 (colnr_T)0, TRUE); | |
| 1259 } | |
| 1260 else | |
| 1261 { | |
| 1262 /* | |
| 1263 * it is a data block | |
| 1264 * Append all the lines in this block | |
| 1265 */ | |
| 1266 has_error = FALSE; | |
| 1267 /* | |
| 1268 * check length of block | |
| 1269 * if wrong, use length in pointer block | |
| 1270 */ | |
| 1271 if (page_count * mfp->mf_page_size != dp->db_txt_end) | |
| 1272 { | |
| 1273 ml_append(lnum++, (char_u *)_("??? from here until ???END lines may be messed up"), | |
| 1274 (colnr_T)0, TRUE); | |
| 1275 ++error; | |
| 1276 has_error = TRUE; | |
| 1277 dp->db_txt_end = page_count * mfp->mf_page_size; | |
| 1278 } | |
| 1279 | |
| 1280 /* make sure there is a NUL at the end of the block */ | |
| 1281 *((char_u *)dp + dp->db_txt_end - 1) = NUL; | |
| 1282 | |
| 1283 /* | |
| 1284 * check number of lines in block | |
| 1285 * if wrong, use count in data block | |
| 1286 */ | |
| 1287 if (line_count != dp->db_line_count) | |
| 1288 { | |
| 1289 ml_append(lnum++, (char_u *)_("??? from here until ???END lines may have been inserted/deleted"), | |
| 1290 (colnr_T)0, TRUE); | |
| 1291 ++error; | |
| 1292 has_error = TRUE; | |
| 1293 } | |
| 1294 | |
| 1295 for (i = 0; i < dp->db_line_count; ++i) | |
| 1296 { | |
| 1297 txt_start = (dp->db_index[i] & DB_INDEX_MASK); | |
| 1978 | 1298 if (txt_start <= (int)HEADER_SIZE |
| 7 | 1299 || txt_start >= (int)dp->db_txt_end) |
| 1300 { | |
| 1301 p = (char_u *)"???"; | |
| 1302 ++error; | |
| 1303 } | |
| 1304 else | |
| 1305 p = (char_u *)dp + txt_start; | |
| 1306 ml_append(lnum++, p, (colnr_T)0, TRUE); | |
| 1307 } | |
| 1308 if (has_error) | |
| 1978 | 1309 ml_append(lnum++, (char_u *)_("???END"), |
| 1310 (colnr_T)0, TRUE); | |
| 7 | 1311 } |
| 1312 } | |
| 1313 } | |
| 1314 | |
| 1315 if (buf->b_ml.ml_stack_top == 0) /* finished */ | |
| 1316 break; | |
| 1317 | |
| 1318 /* | |
| 1319 * go one block up in the tree | |
| 1320 */ | |
| 1321 ip = &(buf->b_ml.ml_stack[--(buf->b_ml.ml_stack_top)]); | |
| 1322 bnum = ip->ip_bnum; | |
| 1323 idx = ip->ip_index + 1; /* go to next index */ | |
| 1324 page_count = 1; | |
| 1325 } | |
| 1326 | |
| 1327 /* | |
|
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1328 * The dummy line from the empty buffer will now be after the last line in |
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1329 * the buffer. Delete it. |
| 7 | 1330 */ |
|
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1331 ml_delete(curbuf->b_ml.ml_line_count, FALSE); |
| 7 | 1332 curbuf->b_flags |= BF_RECOVERED; |
| 1333 | |
| 1334 recoverymode = FALSE; | |
| 1335 if (got_int) | |
| 1336 EMSG(_("E311: Recovery Interrupted")); | |
| 1337 else if (error) | |
| 1338 { | |
| 1339 ++no_wait_return; | |
| 1340 MSG(">>>>>>>>>>>>>"); | |
| 1341 EMSG(_("E312: Errors detected while recovering; look for lines starting with ???")); | |
| 1342 --no_wait_return; | |
| 1343 MSG(_("See \":help E312\" for more information.")); | |
| 1344 MSG(">>>>>>>>>>>>>"); | |
| 1345 } | |
| 1346 else | |
| 1347 { | |
|
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1348 MSG(_("Recovery completed. You should check if everything is OK.")); |
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1349 MSG_PUTS(_("\n(You might want to write out this file under another name\n")); |
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1350 MSG_PUTS(_("and run diff with the original file to check for changes)\n")); |
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1351 MSG_PUTS(_("Delete the .swp file afterwards.\n\n")); |
| 7 | 1352 cmdline_row = msg_row; |
| 1353 } | |
| 1354 redraw_curbuf_later(NOT_VALID); | |
| 1355 | |
| 1356 theend: | |
| 1357 recoverymode = FALSE; | |
| 1358 if (mfp != NULL) | |
| 1359 { | |
| 1360 if (hp != NULL) | |
| 1361 mf_put(mfp, hp, FALSE, FALSE); | |
| 1362 mf_close(mfp, FALSE); /* will also vim_free(mfp->mf_fname) */ | |
| 1363 } | |
| 1053 | 1364 if (buf != NULL) |
| 1365 { | |
| 1366 vim_free(buf->b_ml.ml_stack); | |
| 1367 vim_free(buf); | |
| 1368 } | |
| 7 | 1369 if (serious_error && called_from_main) |
| 1370 ml_close(curbuf, TRUE); | |
| 1371 #ifdef FEAT_AUTOCMD | |
| 1372 else | |
| 1373 { | |
| 1374 apply_autocmds(EVENT_BUFREADPOST, NULL, curbuf->b_fname, FALSE, curbuf); | |
| 1375 apply_autocmds(EVENT_BUFWINENTER, NULL, curbuf->b_fname, FALSE, curbuf); | |
| 1376 } | |
| 1377 #endif | |
| 1378 return; | |
| 1379 } | |
| 1380 | |
| 1381 /* | |
| 1382 * Find the names of swap files in current directory and the directory given | |
| 1383 * with the 'directory' option. | |
| 1384 * | |
| 1385 * Used to: | |
| 1386 * - list the swap files for "vim -r" | |
| 1387 * - count the number of swap files when recovering | |
| 1388 * - list the swap files when recovering | |
| 1389 * - find the name of the n'th swap file when recovering | |
| 1390 */ | |
| 1391 int | |
| 1392 recover_names(fname, list, nr) | |
| 1393 char_u **fname; /* base for swap file name */ | |
| 1394 int list; /* when TRUE, list the swap file names */ | |
| 1395 int nr; /* when non-zero, return nr'th swap file name */ | |
| 1396 { | |
| 1397 int num_names; | |
| 1398 char_u *(names[6]); | |
| 1399 char_u *tail; | |
| 1400 char_u *p; | |
| 1401 int num_files; | |
| 1402 int file_count = 0; | |
| 1403 char_u **files; | |
| 1404 int i; | |
| 1405 char_u *dirp; | |
| 1406 char_u *dir_name; | |
| 2175 | 1407 char_u *fname_res = NULL; |
|
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1408 #ifdef HAVE_READLINK |
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1409 char_u fname_buf[MAXPATHL]; |
| 2175 | 1410 #endif |
| 1411 | |
| 1412 if (fname != NULL) | |
| 1413 { | |
| 1414 #ifdef HAVE_READLINK | |
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1415 /* Expand symlink in the file name, because the swap file is created with |
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1416 * the actual file instead of with the symlink. */ |
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1417 if (resolve_symlink(*fname, fname_buf) == OK) |
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1418 fname_res = fname_buf; |
| 2175 | 1419 else |
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1420 #endif |
| 2175 | 1421 fname_res = *fname; |
| 1422 } | |
| 7 | 1423 |
| 1424 if (list) | |
| 1425 { | |
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1426 /* use msg() to start the scrolling properly */ |
| 7 | 1427 msg((char_u *)_("Swap files found:")); |
| 1428 msg_putchar('\n'); | |
| 1429 } | |
| 1430 | |
| 1431 /* | |
| 1432 * Do the loop for every directory in 'directory'. | |
| 1433 * First allocate some memory to put the directory name in. | |
| 1434 */ | |
| 1435 dir_name = alloc((unsigned)STRLEN(p_dir) + 1); | |
| 1436 dirp = p_dir; | |
| 1437 while (dir_name != NULL && *dirp) | |
| 1438 { | |
| 1439 /* | |
| 1440 * Isolate a directory name from *dirp and put it in dir_name (we know | |
| 1441 * it is large enough, so use 31000 for length). | |
| 1442 * Advance dirp to next directory name. | |
| 1443 */ | |
| 1444 (void)copy_option_part(&dirp, dir_name, 31000, ","); | |
| 1445 | |
| 1446 if (dir_name[0] == '.' && dir_name[1] == NUL) /* check current dir */ | |
| 1447 { | |
| 1448 if (fname == NULL || *fname == NULL) | |
| 1449 { | |
| 1450 #ifdef VMS | |
| 1451 names[0] = vim_strsave((char_u *)"*_sw%"); | |
| 1452 #else | |
| 1453 # ifdef RISCOS | |
| 1454 names[0] = vim_strsave((char_u *)"*_sw#"); | |
| 1455 # else | |
| 1456 names[0] = vim_strsave((char_u *)"*.sw?"); | |
| 1457 # endif | |
| 1458 #endif | |
| 1005 | 1459 #if defined(UNIX) || defined(WIN3264) |
| 1460 /* For Unix names starting with a dot are special. MS-Windows | |
| 1461 * supports this too, on some file systems. */ | |
| 7 | 1462 names[1] = vim_strsave((char_u *)".*.sw?"); |
| 1463 names[2] = vim_strsave((char_u *)".sw?"); | |
| 1464 num_names = 3; | |
| 1465 #else | |
| 1466 # ifdef VMS | |
| 1467 names[1] = vim_strsave((char_u *)".*_sw%"); | |
| 1468 num_names = 2; | |
| 1469 # else | |
| 1470 num_names = 1; | |
| 1471 # endif | |
| 1472 #endif | |
| 1473 } | |
| 1474 else | |
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1475 num_names = recov_file_names(names, fname_res, TRUE); |
| 7 | 1476 } |
| 1477 else /* check directory dir_name */ | |
| 1478 { | |
| 1479 if (fname == NULL || *fname == NULL) | |
| 1480 { | |
| 1481 #ifdef VMS | |
| 1482 names[0] = concat_fnames(dir_name, (char_u *)"*_sw%", TRUE); | |
| 1483 #else | |
| 1484 # ifdef RISCOS | |
| 1485 names[0] = concat_fnames(dir_name, (char_u *)"*_sw#", TRUE); | |
| 1486 # else | |
| 1487 names[0] = concat_fnames(dir_name, (char_u *)"*.sw?", TRUE); | |
| 1488 # endif | |
| 1489 #endif | |
| 1005 | 1490 #if defined(UNIX) || defined(WIN3264) |
| 1491 /* For Unix names starting with a dot are special. MS-Windows | |
| 1492 * supports this too, on some file systems. */ | |
| 7 | 1493 names[1] = concat_fnames(dir_name, (char_u *)".*.sw?", TRUE); |
| 1494 names[2] = concat_fnames(dir_name, (char_u *)".sw?", TRUE); | |
| 1495 num_names = 3; | |
| 1496 #else | |
| 1497 # ifdef VMS | |
| 1498 names[1] = concat_fnames(dir_name, (char_u *)".*_sw%", TRUE); | |
| 1499 num_names = 2; | |
| 1500 # else | |
| 1501 num_names = 1; | |
| 1502 # endif | |
| 1503 #endif | |
| 1504 } | |
| 1505 else | |
| 1506 { | |
| 1507 #if defined(UNIX) || defined(WIN3264) | |
| 1508 p = dir_name + STRLEN(dir_name); | |
| 39 | 1509 if (after_pathsep(dir_name, p) && p[-1] == p[-2]) |
| 7 | 1510 { |
| 1511 /* Ends with '//', Use Full path for swap name */ | |
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1512 tail = make_percent_swname(dir_name, fname_res); |
| 7 | 1513 } |
| 1514 else | |
| 1515 #endif | |
| 1516 { | |
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1517 tail = gettail(fname_res); |
| 7 | 1518 tail = concat_fnames(dir_name, tail, TRUE); |
| 1519 } | |
| 1520 if (tail == NULL) | |
| 1521 num_names = 0; | |
| 1522 else | |
| 1523 { | |
| 1524 num_names = recov_file_names(names, tail, FALSE); | |
| 1525 vim_free(tail); | |
| 1526 } | |
| 1527 } | |
| 1528 } | |
| 1529 | |
| 1530 /* check for out-of-memory */ | |
| 1531 for (i = 0; i < num_names; ++i) | |
| 1532 { | |
| 1533 if (names[i] == NULL) | |
| 1534 { | |
| 1535 for (i = 0; i < num_names; ++i) | |
| 1536 vim_free(names[i]); | |
| 1537 num_names = 0; | |
| 1538 } | |
| 1539 } | |
| 1540 if (num_names == 0) | |
| 1541 num_files = 0; | |
| 1542 else if (expand_wildcards(num_names, names, &num_files, &files, | |
| 1543 EW_KEEPALL|EW_FILE|EW_SILENT) == FAIL) | |
| 1544 num_files = 0; | |
| 1545 | |
| 1546 /* | |
| 1547 * When no swap file found, wildcard expansion might have failed (e.g. | |
| 1548 * not able to execute the shell). | |
| 1549 * Try finding a swap file by simply adding ".swp" to the file name. | |
| 1550 */ | |
| 1551 if (*dirp == NUL && file_count + num_files == 0 | |
| 1552 && fname != NULL && *fname != NULL) | |
| 1553 { | |
| 1554 struct stat st; | |
| 1555 char_u *swapname; | |
| 1556 | |
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1557 swapname = modname(fname_res, |
| 7 | 1558 #if defined(VMS) || defined(RISCOS) |
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1559 (char_u *)"_swp", FALSE |
| 7 | 1560 #else |
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1561 (char_u *)".swp", TRUE |
| 7 | 1562 #endif |
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1563 ); |
| 7 | 1564 if (swapname != NULL) |
| 1565 { | |
| 1566 if (mch_stat((char *)swapname, &st) != -1) /* It exists! */ | |
| 1567 { | |
| 1568 files = (char_u **)alloc((unsigned)sizeof(char_u *)); | |
| 1569 if (files != NULL) | |
| 1570 { | |
| 1571 files[0] = swapname; | |
| 1572 swapname = NULL; | |
| 1573 num_files = 1; | |
| 1574 } | |
| 1575 } | |
| 1576 vim_free(swapname); | |
| 1577 } | |
| 1578 } | |
| 1579 | |
| 1580 /* | |
| 1581 * remove swapfile name of the current buffer, it must be ignored | |
| 1582 */ | |
| 1583 if (curbuf->b_ml.ml_mfp != NULL | |
| 1584 && (p = curbuf->b_ml.ml_mfp->mf_fname) != NULL) | |
| 1585 { | |
| 1586 for (i = 0; i < num_files; ++i) | |
| 1587 if (fullpathcmp(p, files[i], TRUE) & FPC_SAME) | |
| 1588 { | |
| 1855 | 1589 /* Remove the name from files[i]. Move further entries |
| 1590 * down. When the array becomes empty free it here, since | |
| 1591 * FreeWild() won't be called below. */ | |
| 7 | 1592 vim_free(files[i]); |
| 1855 | 1593 if (--num_files == 0) |
| 1594 vim_free(files); | |
| 1595 else | |
| 1596 for ( ; i < num_files; ++i) | |
| 1597 files[i] = files[i + 1]; | |
| 7 | 1598 } |
| 1599 } | |
| 838 | 1600 if (nr > 0) |
| 7 | 1601 { |
| 1602 file_count += num_files; | |
| 1603 if (nr <= file_count) | |
| 1604 { | |
| 1605 *fname = vim_strsave(files[nr - 1 + num_files - file_count]); | |
| 1606 dirp = (char_u *)""; /* stop searching */ | |
| 1607 } | |
| 1608 } | |
| 1609 else if (list) | |
| 1610 { | |
| 1611 if (dir_name[0] == '.' && dir_name[1] == NUL) | |
| 1612 { | |
| 1613 if (fname == NULL || *fname == NULL) | |
| 1614 MSG_PUTS(_(" In current directory:\n")); | |
| 1615 else | |
| 1616 MSG_PUTS(_(" Using specified name:\n")); | |
| 1617 } | |
| 1618 else | |
| 1619 { | |
| 1620 MSG_PUTS(_(" In directory ")); | |
| 1621 msg_home_replace(dir_name); | |
| 1622 MSG_PUTS(":\n"); | |
| 1623 } | |
| 1624 | |
| 1625 if (num_files) | |
| 1626 { | |
| 1627 for (i = 0; i < num_files; ++i) | |
| 1628 { | |
| 1629 /* print the swap file name */ | |
| 1630 msg_outnum((long)++file_count); | |
| 1631 MSG_PUTS(". "); | |
| 1632 msg_puts(gettail(files[i])); | |
| 1633 msg_putchar('\n'); | |
| 1634 (void)swapfile_info(files[i]); | |
| 1635 } | |
| 1636 } | |
| 1637 else | |
| 1638 MSG_PUTS(_(" -- none --\n")); | |
| 1639 out_flush(); | |
| 1640 } | |
| 1641 else | |
| 1642 file_count += num_files; | |
| 1643 | |
| 1644 for (i = 0; i < num_names; ++i) | |
| 1645 vim_free(names[i]); | |
| 838 | 1646 if (num_files > 0) |
| 1647 FreeWild(num_files, files); | |
| 7 | 1648 } |
| 1649 vim_free(dir_name); | |
| 1650 return file_count; | |
| 1651 } | |
| 1652 | |
| 1653 #if defined(UNIX) || defined(WIN3264) /* Need _very_ long file names */ | |
| 1654 /* | |
| 1655 * Append the full path to name with path separators made into percent | |
| 1656 * signs, to dir. An unnamed buffer is handled as "" (<currentdir>/"") | |
| 1657 */ | |
| 1658 static char_u * | |
| 1659 make_percent_swname(dir, name) | |
| 1660 char_u *dir; | |
| 1661 char_u *name; | |
| 1662 { | |
| 39 | 1663 char_u *d, *s, *f; |
| 7 | 1664 |
| 1665 f = fix_fname(name != NULL ? name : (char_u *) ""); | |
| 1666 d = NULL; | |
| 1667 if (f != NULL) | |
| 1668 { | |
| 1669 s = alloc((unsigned)(STRLEN(f) + 1)); | |
| 1670 if (s != NULL) | |
| 1671 { | |
| 39 | 1672 STRCPY(s, f); |
| 1673 for (d = s; *d != NUL; mb_ptr_adv(d)) | |
| 1674 if (vim_ispathsep(*d)) | |
| 1675 *d = '%'; | |
| 7 | 1676 d = concat_fnames(dir, s, TRUE); |
| 1677 vim_free(s); | |
| 1678 } | |
| 1679 vim_free(f); | |
| 1680 } | |
| 1681 return d; | |
| 1682 } | |
| 1683 #endif | |
| 1684 | |
| 1685 #if (defined(UNIX) || defined(__EMX__) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)) | |
| 1686 static int process_still_running; | |
| 1687 #endif | |
| 1688 | |
| 1689 /* | |
| 580 | 1690 * Give information about an existing swap file. |
| 7 | 1691 * Returns timestamp (0 when unknown). |
| 1692 */ | |
| 1693 static time_t | |
| 1694 swapfile_info(fname) | |
| 1695 char_u *fname; | |
| 1696 { | |
| 1697 struct stat st; | |
| 1698 int fd; | |
| 1699 struct block0 b0; | |
| 1700 time_t x = (time_t)0; | |
| 1001 | 1701 char *p; |
| 7 | 1702 #ifdef UNIX |
| 1703 char_u uname[B0_UNAME_SIZE]; | |
| 1704 #endif | |
| 1705 | |
| 1706 /* print the swap file date */ | |
| 1707 if (mch_stat((char *)fname, &st) != -1) | |
| 1708 { | |
| 1709 #ifdef UNIX | |
| 1710 /* print name of owner of the file */ | |
| 1711 if (mch_get_uname(st.st_uid, uname, B0_UNAME_SIZE) == OK) | |
| 1712 { | |
| 1713 MSG_PUTS(_(" owned by: ")); | |
| 1714 msg_outtrans(uname); | |
| 1715 MSG_PUTS(_(" dated: ")); | |
| 1716 } | |
| 1717 else | |
| 1718 #endif | |
| 1719 MSG_PUTS(_(" dated: ")); | |
| 1720 x = st.st_mtime; /* Manx C can't do &st.st_mtime */ | |
| 1001 | 1721 p = ctime(&x); /* includes '\n' */ |
| 1722 if (p == NULL) | |
| 1723 MSG_PUTS("(invalid)\n"); | |
| 1724 else | |
| 1725 MSG_PUTS(p); | |
| 7 | 1726 } |
| 1727 | |
| 1728 /* | |
| 1729 * print the original file name | |
| 1730 */ | |
| 1731 fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
| 1732 if (fd >= 0) | |
| 1733 { | |
| 1734 if (read(fd, (char *)&b0, sizeof(b0)) == sizeof(b0)) | |
| 1735 { | |
| 1736 if (STRNCMP(b0.b0_version, "VIM 3.0", 7) == 0) | |
| 1737 { | |
| 1738 MSG_PUTS(_(" [from Vim version 3.0]")); | |
| 1739 } | |
| 1740 else if (b0.b0_id[0] != BLOCK0_ID0 || b0.b0_id[1] != BLOCK0_ID1) | |
| 1741 { | |
| 1742 MSG_PUTS(_(" [does not look like a Vim swap file]")); | |
| 1743 } | |
| 1744 else | |
| 1745 { | |
| 1746 MSG_PUTS(_(" file name: ")); | |
| 1747 if (b0.b0_fname[0] == NUL) | |
| 9 | 1748 MSG_PUTS(_("[No Name]")); |
| 7 | 1749 else |
| 1750 msg_outtrans(b0.b0_fname); | |
| 1751 | |
| 1752 MSG_PUTS(_("\n modified: ")); | |
| 1753 MSG_PUTS(b0.b0_dirty ? _("YES") : _("no")); | |
| 1754 | |
| 1755 if (*(b0.b0_uname) != NUL) | |
| 1756 { | |
| 1757 MSG_PUTS(_("\n user name: ")); | |
| 1758 msg_outtrans(b0.b0_uname); | |
| 1759 } | |
| 1760 | |
| 1761 if (*(b0.b0_hname) != NUL) | |
| 1762 { | |
| 1763 if (*(b0.b0_uname) != NUL) | |
| 1764 MSG_PUTS(_(" host name: ")); | |
| 1765 else | |
| 1766 MSG_PUTS(_("\n host name: ")); | |
| 1767 msg_outtrans(b0.b0_hname); | |
| 1768 } | |
| 1769 | |
| 1770 if (char_to_long(b0.b0_pid) != 0L) | |
| 1771 { | |
| 1772 MSG_PUTS(_("\n process ID: ")); | |
| 1773 msg_outnum(char_to_long(b0.b0_pid)); | |
| 1774 #if defined(UNIX) || defined(__EMX__) | |
| 1775 /* EMX kill() not working correctly, it seems */ | |
| 1776 if (kill((pid_t)char_to_long(b0.b0_pid), 0) == 0) | |
| 1777 { | |
| 1778 MSG_PUTS(_(" (still running)")); | |
| 1779 # if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) | |
| 1780 process_still_running = TRUE; | |
| 1781 # endif | |
| 1782 } | |
| 1783 #endif | |
| 1784 } | |
| 1785 | |
| 1786 if (b0_magic_wrong(&b0)) | |
| 1787 { | |
| 1788 #if defined(MSDOS) || defined(MSWIN) | |
| 1789 if (STRNCMP(b0.b0_hname, "PC ", 3) == 0) | |
| 1790 MSG_PUTS(_("\n [not usable with this version of Vim]")); | |
| 1791 else | |
| 1792 #endif | |
| 1793 MSG_PUTS(_("\n [not usable on this computer]")); | |
| 1794 } | |
| 1795 } | |
| 1796 } | |
| 1797 else | |
| 1798 MSG_PUTS(_(" [cannot be read]")); | |
| 1799 close(fd); | |
| 1800 } | |
| 1801 else | |
| 1802 MSG_PUTS(_(" [cannot be opened]")); | |
| 1803 msg_putchar('\n'); | |
| 1804 | |
| 1805 return x; | |
| 1806 } | |
| 1807 | |
| 1808 static int | |
| 1809 recov_file_names(names, path, prepend_dot) | |
| 1810 char_u **names; | |
| 1811 char_u *path; | |
| 1812 int prepend_dot; | |
| 1813 { | |
| 1814 int num_names; | |
| 1815 | |
| 1816 #ifdef SHORT_FNAME | |
| 1817 /* | |
| 1818 * (MS-DOS) always short names | |
| 1819 */ | |
| 1820 names[0] = modname(path, (char_u *)".sw?", FALSE); | |
| 1821 num_names = 1; | |
| 1822 #else /* !SHORT_FNAME */ | |
| 1823 /* | |
| 1824 * (Win32 and Win64) never short names, but do prepend a dot. | |
| 1825 * (Not MS-DOS or Win32 or Win64) maybe short name, maybe not: Try both. | |
| 1826 * Only use the short name if it is different. | |
| 1827 */ | |
| 1828 char_u *p; | |
| 1829 int i; | |
| 1830 # ifndef WIN3264 | |
| 1831 int shortname = curbuf->b_shortname; | |
| 1832 | |
| 1833 curbuf->b_shortname = FALSE; | |
| 1834 # endif | |
| 1835 | |
| 1836 num_names = 0; | |
| 1837 | |
| 1838 /* | |
| 1839 * May also add the file name with a dot prepended, for swap file in same | |
| 1840 * dir as original file. | |
| 1841 */ | |
| 1842 if (prepend_dot) | |
| 1843 { | |
| 1844 names[num_names] = modname(path, (char_u *)".sw?", TRUE); | |
| 1845 if (names[num_names] == NULL) | |
| 1846 goto end; | |
| 1847 ++num_names; | |
| 1848 } | |
| 1849 | |
| 1850 /* | |
| 1851 * Form the normal swap file name pattern by appending ".sw?". | |
| 1852 */ | |
| 1853 #ifdef VMS | |
| 1854 names[num_names] = concat_fnames(path, (char_u *)"_sw%", FALSE); | |
| 1855 #else | |
| 1856 # ifdef RISCOS | |
| 1857 names[num_names] = concat_fnames(path, (char_u *)"_sw#", FALSE); | |
| 1858 # else | |
| 1859 names[num_names] = concat_fnames(path, (char_u *)".sw?", FALSE); | |
| 1860 # endif | |
| 1861 #endif | |
| 1862 if (names[num_names] == NULL) | |
| 1863 goto end; | |
| 1864 if (num_names >= 1) /* check if we have the same name twice */ | |
| 1865 { | |
| 1866 p = names[num_names - 1]; | |
| 1867 i = (int)STRLEN(names[num_names - 1]) - (int)STRLEN(names[num_names]); | |
| 1868 if (i > 0) | |
| 1869 p += i; /* file name has been expanded to full path */ | |
| 1870 | |
| 1871 if (STRCMP(p, names[num_names]) != 0) | |
| 1872 ++num_names; | |
| 1873 else | |
| 1874 vim_free(names[num_names]); | |
| 1875 } | |
| 1876 else | |
| 1877 ++num_names; | |
| 1878 | |
| 1879 # ifndef WIN3264 | |
| 1880 /* | |
| 1881 * Also try with 'shortname' set, in case the file is on a DOS filesystem. | |
| 1882 */ | |
| 1883 curbuf->b_shortname = TRUE; | |
| 1884 #ifdef VMS | |
| 1885 names[num_names] = modname(path, (char_u *)"_sw%", FALSE); | |
| 1886 #else | |
| 1887 # ifdef RISCOS | |
| 1888 names[num_names] = modname(path, (char_u *)"_sw#", FALSE); | |
| 1889 # else | |
| 1890 names[num_names] = modname(path, (char_u *)".sw?", FALSE); | |
| 1891 # endif | |
| 1892 #endif | |
| 1893 if (names[num_names] == NULL) | |
| 1894 goto end; | |
| 1895 | |
| 1896 /* | |
| 1897 * Remove the one from 'shortname', if it's the same as with 'noshortname'. | |
| 1898 */ | |
| 1899 p = names[num_names]; | |
| 1900 i = STRLEN(names[num_names]) - STRLEN(names[num_names - 1]); | |
| 1901 if (i > 0) | |
| 1902 p += i; /* file name has been expanded to full path */ | |
| 1903 if (STRCMP(names[num_names - 1], p) == 0) | |
| 1904 vim_free(names[num_names]); | |
| 1905 else | |
| 1906 ++num_names; | |
| 1907 # endif | |
| 1908 | |
| 1909 end: | |
| 1910 # ifndef WIN3264 | |
| 1911 curbuf->b_shortname = shortname; | |
| 1912 # endif | |
| 1913 | |
| 1914 #endif /* !SHORT_FNAME */ | |
| 1915 | |
| 1916 return num_names; | |
| 1917 } | |
| 1918 | |
| 1919 /* | |
| 1920 * sync all memlines | |
| 1921 * | |
| 1922 * If 'check_file' is TRUE, check if original file exists and was not changed. | |
| 1923 * If 'check_char' is TRUE, stop syncing when character becomes available, but | |
| 1924 * always sync at least one block. | |
| 1925 */ | |
| 1926 void | |
| 1927 ml_sync_all(check_file, check_char) | |
| 1928 int check_file; | |
| 1929 int check_char; | |
| 1930 { | |
| 1931 buf_T *buf; | |
| 1932 struct stat st; | |
| 1933 | |
| 1934 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
| 1935 { | |
| 1936 if (buf->b_ml.ml_mfp == NULL || buf->b_ml.ml_mfp->mf_fname == NULL) | |
| 1937 continue; /* no file */ | |
| 1938 | |
| 1939 ml_flush_line(buf); /* flush buffered line */ | |
| 1940 /* flush locked block */ | |
| 1941 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); | |
| 1942 if (bufIsChanged(buf) && check_file && mf_need_trans(buf->b_ml.ml_mfp) | |
| 1943 && buf->b_ffname != NULL) | |
| 1944 { | |
| 1945 /* | |
| 1946 * If the original file does not exist anymore or has been changed | |
| 1947 * call ml_preserve() to get rid of all negative numbered blocks. | |
| 1948 */ | |
| 1949 if (mch_stat((char *)buf->b_ffname, &st) == -1 | |
| 1950 || st.st_mtime != buf->b_mtime_read | |
| 1951 || (size_t)st.st_size != buf->b_orig_size) | |
| 1952 { | |
| 1953 ml_preserve(buf, FALSE); | |
| 1954 did_check_timestamps = FALSE; | |
| 1955 need_check_timestamps = TRUE; /* give message later */ | |
| 1956 } | |
| 1957 } | |
| 1958 if (buf->b_ml.ml_mfp->mf_dirty) | |
| 1959 { | |
| 1960 (void)mf_sync(buf->b_ml.ml_mfp, (check_char ? MFS_STOP : 0) | |
| 1961 | (bufIsChanged(buf) ? MFS_FLUSH : 0)); | |
| 1962 if (check_char && ui_char_avail()) /* character available now */ | |
| 1963 break; | |
| 1964 } | |
| 1965 } | |
| 1966 } | |
| 1967 | |
| 1968 /* | |
| 1969 * sync one buffer, including negative blocks | |
| 1970 * | |
| 1971 * after this all the blocks are in the swap file | |
| 1972 * | |
| 1973 * Used for the :preserve command and when the original file has been | |
| 1974 * changed or deleted. | |
| 1975 * | |
| 1976 * when message is TRUE the success of preserving is reported | |
| 1977 */ | |
| 1978 void | |
| 1979 ml_preserve(buf, message) | |
| 1980 buf_T *buf; | |
| 1981 int message; | |
| 1982 { | |
| 1983 bhdr_T *hp; | |
| 1984 linenr_T lnum; | |
| 1985 memfile_T *mfp = buf->b_ml.ml_mfp; | |
| 1986 int status; | |
| 1987 int got_int_save = got_int; | |
| 1988 | |
| 1989 if (mfp == NULL || mfp->mf_fname == NULL) | |
| 1990 { | |
| 1991 if (message) | |
| 1992 EMSG(_("E313: Cannot preserve, there is no swap file")); | |
| 1993 return; | |
| 1994 } | |
| 1995 | |
| 1996 /* We only want to stop when interrupted here, not when interrupted | |
| 1997 * before. */ | |
| 1998 got_int = FALSE; | |
| 1999 | |
| 2000 ml_flush_line(buf); /* flush buffered line */ | |
| 2001 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
| 2002 status = mf_sync(mfp, MFS_ALL | MFS_FLUSH); | |
| 2003 | |
| 2004 /* stack is invalid after mf_sync(.., MFS_ALL) */ | |
| 2005 buf->b_ml.ml_stack_top = 0; | |
| 2006 | |
| 2007 /* | |
| 2008 * Some of the data blocks may have been changed from negative to | |
| 2009 * positive block number. In that case the pointer blocks need to be | |
| 2010 * updated. | |
| 2011 * | |
| 2012 * We don't know in which pointer block the references are, so we visit | |
| 2013 * all data blocks until there are no more translations to be done (or | |
| 2014 * we hit the end of the file, which can only happen in case a write fails, | |
| 2015 * e.g. when file system if full). | |
| 2016 * ml_find_line() does the work by translating the negative block numbers | |
| 2017 * when getting the first line of each data block. | |
| 2018 */ | |
| 2019 if (mf_need_trans(mfp) && !got_int) | |
| 2020 { | |
| 2021 lnum = 1; | |
| 2022 while (mf_need_trans(mfp) && lnum <= buf->b_ml.ml_line_count) | |
| 2023 { | |
| 2024 hp = ml_find_line(buf, lnum, ML_FIND); | |
| 2025 if (hp == NULL) | |
| 2026 { | |
| 2027 status = FAIL; | |
| 2028 goto theend; | |
| 2029 } | |
| 2030 CHECK(buf->b_ml.ml_locked_low != lnum, "low != lnum"); | |
| 2031 lnum = buf->b_ml.ml_locked_high + 1; | |
| 2032 } | |
| 2033 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
| 2034 /* sync the updated pointer blocks */ | |
| 2035 if (mf_sync(mfp, MFS_ALL | MFS_FLUSH) == FAIL) | |
| 2036 status = FAIL; | |
| 2037 buf->b_ml.ml_stack_top = 0; /* stack is invalid now */ | |
| 2038 } | |
| 2039 theend: | |
| 2040 got_int |= got_int_save; | |
| 2041 | |
| 2042 if (message) | |
| 2043 { | |
| 2044 if (status == OK) | |
| 2045 MSG(_("File preserved")); | |
| 2046 else | |
| 2047 EMSG(_("E314: Preserve failed")); | |
| 2048 } | |
| 2049 } | |
| 2050 | |
| 2051 /* | |
| 2052 * NOTE: The pointer returned by the ml_get_*() functions only remains valid | |
| 2053 * until the next call! | |
| 2054 * line1 = ml_get(1); | |
| 2055 * line2 = ml_get(2); // line1 is now invalid! | |
| 2056 * Make a copy of the line if necessary. | |
| 2057 */ | |
| 2058 /* | |
| 2059 * get a pointer to a (read-only copy of a) line | |
| 2060 * | |
| 2061 * On failure an error message is given and IObuff is returned (to avoid | |
| 2062 * having to check for error everywhere). | |
| 2063 */ | |
| 2064 char_u * | |
| 2065 ml_get(lnum) | |
| 2066 linenr_T lnum; | |
| 2067 { | |
| 2068 return ml_get_buf(curbuf, lnum, FALSE); | |
| 2069 } | |
| 2070 | |
| 2071 /* | |
| 2072 * ml_get_pos: get pointer to position 'pos' | |
| 2073 */ | |
| 2074 char_u * | |
| 2075 ml_get_pos(pos) | |
| 2076 pos_T *pos; | |
| 2077 { | |
| 2078 return (ml_get_buf(curbuf, pos->lnum, FALSE) + pos->col); | |
| 2079 } | |
| 2080 | |
| 2081 /* | |
| 2082 * ml_get_curline: get pointer to cursor line. | |
| 2083 */ | |
| 2084 char_u * | |
| 2085 ml_get_curline() | |
| 2086 { | |
| 2087 return ml_get_buf(curbuf, curwin->w_cursor.lnum, FALSE); | |
| 2088 } | |
| 2089 | |
| 2090 /* | |
| 2091 * ml_get_cursor: get pointer to cursor position | |
| 2092 */ | |
| 2093 char_u * | |
| 2094 ml_get_cursor() | |
| 2095 { | |
| 2096 return (ml_get_buf(curbuf, curwin->w_cursor.lnum, FALSE) + | |
| 2097 curwin->w_cursor.col); | |
| 2098 } | |
| 2099 | |
| 2100 /* | |
| 2101 * get a pointer to a line in a specific buffer | |
| 2102 * | |
| 2103 * "will_change": if TRUE mark the buffer dirty (chars in the line will be | |
| 2104 * changed) | |
| 2105 */ | |
| 2106 char_u * | |
| 2107 ml_get_buf(buf, lnum, will_change) | |
| 2108 buf_T *buf; | |
| 2109 linenr_T lnum; | |
| 2110 int will_change; /* line will be changed */ | |
| 2111 { | |
| 1068 | 2112 bhdr_T *hp; |
| 2113 DATA_BL *dp; | |
| 2114 char_u *ptr; | |
| 2115 static int recursive = 0; | |
| 7 | 2116 |
| 2117 if (lnum > buf->b_ml.ml_line_count) /* invalid line number */ | |
| 2118 { | |
| 1068 | 2119 if (recursive == 0) |
| 2120 { | |
| 2121 /* Avoid giving this message for a recursive call, may happen when | |
| 2122 * the GUI redraws part of the text. */ | |
| 2123 ++recursive; | |
| 2124 EMSGN(_("E315: ml_get: invalid lnum: %ld"), lnum); | |
| 2125 --recursive; | |
| 2126 } | |
| 7 | 2127 errorret: |
| 2128 STRCPY(IObuff, "???"); | |
| 2129 return IObuff; | |
| 2130 } | |
| 2131 if (lnum <= 0) /* pretend line 0 is line 1 */ | |
| 2132 lnum = 1; | |
| 2133 | |
| 2134 if (buf->b_ml.ml_mfp == NULL) /* there are no lines */ | |
| 2135 return (char_u *)""; | |
| 2136 | |
|
2108
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|
2137 /* |
|
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|
2138 * See if it is the same line as requested last time. |
|
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|
2139 * Otherwise may need to flush last used line. |
|
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|
2140 * Don't use the last used line when 'swapfile' is reset, need to load all |
|
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|
2141 * blocks. |
|
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|
2142 */ |
| 1066 | 2143 if (buf->b_ml.ml_line_lnum != lnum || mf_dont_release) |
| 7 | 2144 { |
| 2145 ml_flush_line(buf); | |
| 2146 | |
| 2147 /* | |
| 2148 * Find the data block containing the line. | |
| 2149 * This also fills the stack with the blocks from the root to the data | |
| 2150 * block and releases any locked block. | |
| 2151 */ | |
| 2152 if ((hp = ml_find_line(buf, lnum, ML_FIND)) == NULL) | |
| 2153 { | |
| 1068 | 2154 if (recursive == 0) |
| 2155 { | |
| 2156 /* Avoid giving this message for a recursive call, may happen | |
| 2157 * when the GUI redraws part of the text. */ | |
| 2158 ++recursive; | |
| 2159 EMSGN(_("E316: ml_get: cannot find line %ld"), lnum); | |
| 2160 --recursive; | |
| 2161 } | |
| 7 | 2162 goto errorret; |
| 2163 } | |
| 2164 | |
| 2165 dp = (DATA_BL *)(hp->bh_data); | |
| 2166 | |
| 2167 ptr = (char_u *)dp + ((dp->db_index[lnum - buf->b_ml.ml_locked_low]) & DB_INDEX_MASK); | |
| 2168 buf->b_ml.ml_line_ptr = ptr; | |
| 2169 buf->b_ml.ml_line_lnum = lnum; | |
| 2170 buf->b_ml.ml_flags &= ~ML_LINE_DIRTY; | |
| 2171 } | |
| 2172 if (will_change) | |
| 2173 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 2174 | |
| 2175 return buf->b_ml.ml_line_ptr; | |
| 2176 } | |
| 2177 | |
| 2178 /* | |
| 2179 * Check if a line that was just obtained by a call to ml_get | |
| 2180 * is in allocated memory. | |
| 2181 */ | |
| 2182 int | |
| 2183 ml_line_alloced() | |
| 2184 { | |
| 2185 return (curbuf->b_ml.ml_flags & ML_LINE_DIRTY); | |
| 2186 } | |
| 2187 | |
| 2188 /* | |
| 2189 * Append a line after lnum (may be 0 to insert a line in front of the file). | |
| 2190 * "line" does not need to be allocated, but can't be another line in a | |
| 2191 * buffer, unlocking may make it invalid. | |
| 2192 * | |
| 2193 * newfile: TRUE when starting to edit a new file, meaning that pe_old_lnum | |
| 2194 * will be set for recovery | |
| 2195 * Check: The caller of this function should probably also call | |
| 2196 * appended_lines(). | |
| 2197 * | |
| 2198 * return FAIL for failure, OK otherwise | |
| 2199 */ | |
| 2200 int | |
| 2201 ml_append(lnum, line, len, newfile) | |
| 2202 linenr_T lnum; /* append after this line (can be 0) */ | |
| 2203 char_u *line; /* text of the new line */ | |
| 2204 colnr_T len; /* length of new line, including NUL, or 0 */ | |
| 2205 int newfile; /* flag, see above */ | |
| 2206 { | |
| 2207 /* When starting up, we might still need to create the memfile */ | |
| 2208 if (curbuf->b_ml.ml_mfp == NULL && open_buffer(FALSE, NULL) == FAIL) | |
| 2209 return FAIL; | |
| 2210 | |
| 2211 if (curbuf->b_ml.ml_line_lnum != 0) | |
| 2212 ml_flush_line(curbuf); | |
| 2213 return ml_append_int(curbuf, lnum, line, len, newfile, FALSE); | |
| 2214 } | |
| 2215 | |
| 748 | 2216 #if defined(FEAT_SPELL) || defined(PROTO) |
| 625 | 2217 /* |
| 2218 * Like ml_append() but for an arbitrary buffer. The buffer must already have | |
| 2219 * a memline. | |
| 2220 */ | |
| 2221 int | |
| 2222 ml_append_buf(buf, lnum, line, len, newfile) | |
| 2223 buf_T *buf; | |
| 2224 linenr_T lnum; /* append after this line (can be 0) */ | |
| 2225 char_u *line; /* text of the new line */ | |
| 2226 colnr_T len; /* length of new line, including NUL, or 0 */ | |
| 2227 int newfile; /* flag, see above */ | |
| 2228 { | |
| 2229 if (buf->b_ml.ml_mfp == NULL) | |
| 2230 return FAIL; | |
| 2231 | |
| 2232 if (buf->b_ml.ml_line_lnum != 0) | |
| 2233 ml_flush_line(buf); | |
| 2234 return ml_append_int(buf, lnum, line, len, newfile, FALSE); | |
| 2235 } | |
| 2236 #endif | |
| 2237 | |
| 7 | 2238 static int |
| 2239 ml_append_int(buf, lnum, line, len, newfile, mark) | |
| 2240 buf_T *buf; | |
| 2241 linenr_T lnum; /* append after this line (can be 0) */ | |
| 2242 char_u *line; /* text of the new line */ | |
| 2243 colnr_T len; /* length of line, including NUL, or 0 */ | |
| 2244 int newfile; /* flag, see above */ | |
| 2245 int mark; /* mark the new line */ | |
| 2246 { | |
| 2247 int i; | |
| 2248 int line_count; /* number of indexes in current block */ | |
| 2249 int offset; | |
| 2250 int from, to; | |
| 2251 int space_needed; /* space needed for new line */ | |
| 2252 int page_size; | |
| 2253 int page_count; | |
| 2254 int db_idx; /* index for lnum in data block */ | |
| 2255 bhdr_T *hp; | |
| 2256 memfile_T *mfp; | |
| 2257 DATA_BL *dp; | |
| 2258 PTR_BL *pp; | |
| 2259 infoptr_T *ip; | |
| 2260 | |
| 2261 /* lnum out of range */ | |
| 2262 if (lnum > buf->b_ml.ml_line_count || buf->b_ml.ml_mfp == NULL) | |
| 2263 return FAIL; | |
| 2264 | |
| 2265 if (lowest_marked && lowest_marked > lnum) | |
| 2266 lowest_marked = lnum + 1; | |
| 2267 | |
| 2268 if (len == 0) | |
| 2269 len = (colnr_T)STRLEN(line) + 1; /* space needed for the text */ | |
| 2270 space_needed = len + INDEX_SIZE; /* space needed for text + index */ | |
| 2271 | |
| 2272 mfp = buf->b_ml.ml_mfp; | |
| 2273 page_size = mfp->mf_page_size; | |
| 2274 | |
| 2275 /* | |
| 2276 * find the data block containing the previous line | |
| 2277 * This also fills the stack with the blocks from the root to the data block | |
| 2278 * This also releases any locked block. | |
| 2279 */ | |
| 2280 if ((hp = ml_find_line(buf, lnum == 0 ? (linenr_T)1 : lnum, | |
| 2281 ML_INSERT)) == NULL) | |
| 2282 return FAIL; | |
| 2283 | |
| 2284 buf->b_ml.ml_flags &= ~ML_EMPTY; | |
| 2285 | |
| 2286 if (lnum == 0) /* got line one instead, correct db_idx */ | |
| 2287 db_idx = -1; /* careful, it is negative! */ | |
| 2288 else | |
| 2289 db_idx = lnum - buf->b_ml.ml_locked_low; | |
| 2290 /* get line count before the insertion */ | |
| 2291 line_count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low; | |
| 2292 | |
| 2293 dp = (DATA_BL *)(hp->bh_data); | |
| 2294 | |
| 2295 /* | |
| 2296 * If | |
| 2297 * - there is not enough room in the current block | |
| 2298 * - appending to the last line in the block | |
| 2299 * - not appending to the last line in the file | |
| 2300 * insert in front of the next block. | |
| 2301 */ | |
| 2302 if ((int)dp->db_free < space_needed && db_idx == line_count - 1 | |
| 2303 && lnum < buf->b_ml.ml_line_count) | |
| 2304 { | |
| 2305 /* | |
| 2306 * Now that the line is not going to be inserted in the block that we | |
| 2307 * expected, the line count has to be adjusted in the pointer blocks | |
| 2308 * by using ml_locked_lineadd. | |
| 2309 */ | |
| 2310 --(buf->b_ml.ml_locked_lineadd); | |
| 2311 --(buf->b_ml.ml_locked_high); | |
| 2312 if ((hp = ml_find_line(buf, lnum + 1, ML_INSERT)) == NULL) | |
| 2313 return FAIL; | |
| 2314 | |
| 2315 db_idx = -1; /* careful, it is negative! */ | |
| 2316 /* get line count before the insertion */ | |
| 2317 line_count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low; | |
| 2318 CHECK(buf->b_ml.ml_locked_low != lnum + 1, "locked_low != lnum + 1"); | |
| 2319 | |
| 2320 dp = (DATA_BL *)(hp->bh_data); | |
| 2321 } | |
| 2322 | |
| 2323 ++buf->b_ml.ml_line_count; | |
| 2324 | |
| 2325 if ((int)dp->db_free >= space_needed) /* enough room in data block */ | |
| 2326 { | |
| 2327 /* | |
| 2328 * Insert new line in existing data block, or in data block allocated above. | |
| 2329 */ | |
| 2330 dp->db_txt_start -= len; | |
| 2331 dp->db_free -= space_needed; | |
| 2332 ++(dp->db_line_count); | |
| 2333 | |
| 2334 /* | |
| 2335 * move the text of the lines that follow to the front | |
| 2336 * adjust the indexes of the lines that follow | |
| 2337 */ | |
| 2338 if (line_count > db_idx + 1) /* if there are following lines */ | |
| 2339 { | |
| 2340 /* | |
| 2341 * Offset is the start of the previous line. | |
| 2342 * This will become the character just after the new line. | |
| 2343 */ | |
| 2344 if (db_idx < 0) | |
| 2345 offset = dp->db_txt_end; | |
| 2346 else | |
| 2347 offset = ((dp->db_index[db_idx]) & DB_INDEX_MASK); | |
| 2348 mch_memmove((char *)dp + dp->db_txt_start, | |
| 2349 (char *)dp + dp->db_txt_start + len, | |
| 2350 (size_t)(offset - (dp->db_txt_start + len))); | |
| 2351 for (i = line_count - 1; i > db_idx; --i) | |
| 2352 dp->db_index[i + 1] = dp->db_index[i] - len; | |
| 2353 dp->db_index[db_idx + 1] = offset - len; | |
| 2354 } | |
| 2355 else /* add line at the end */ | |
| 2356 dp->db_index[db_idx + 1] = dp->db_txt_start; | |
| 2357 | |
| 2358 /* | |
| 2359 * copy the text into the block | |
| 2360 */ | |
| 2361 mch_memmove((char *)dp + dp->db_index[db_idx + 1], line, (size_t)len); | |
| 2362 if (mark) | |
| 2363 dp->db_index[db_idx + 1] |= DB_MARKED; | |
| 2364 | |
| 2365 /* | |
| 2366 * Mark the block dirty. | |
| 2367 */ | |
| 2368 buf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 2369 if (!newfile) | |
| 2370 buf->b_ml.ml_flags |= ML_LOCKED_POS; | |
| 2371 } | |
| 2372 else /* not enough space in data block */ | |
| 2373 { | |
| 2374 /* | |
| 2375 * If there is not enough room we have to create a new data block and copy some | |
| 2376 * lines into it. | |
| 2377 * Then we have to insert an entry in the pointer block. | |
| 2378 * If this pointer block also is full, we go up another block, and so on, up | |
| 2379 * to the root if necessary. | |
| 2380 * The line counts in the pointer blocks have already been adjusted by | |
| 2381 * ml_find_line(). | |
| 2382 */ | |
| 2383 long line_count_left, line_count_right; | |
| 2384 int page_count_left, page_count_right; | |
| 2385 bhdr_T *hp_left; | |
| 2386 bhdr_T *hp_right; | |
| 2387 bhdr_T *hp_new; | |
| 2388 int lines_moved; | |
| 2389 int data_moved = 0; /* init to shut up gcc */ | |
| 2390 int total_moved = 0; /* init to shut up gcc */ | |
| 2391 DATA_BL *dp_right, *dp_left; | |
| 2392 int stack_idx; | |
| 2393 int in_left; | |
| 2394 int lineadd; | |
| 2395 blocknr_T bnum_left, bnum_right; | |
| 2396 linenr_T lnum_left, lnum_right; | |
| 2397 int pb_idx; | |
| 2398 PTR_BL *pp_new; | |
| 2399 | |
| 2400 /* | |
| 2401 * We are going to allocate a new data block. Depending on the | |
| 2402 * situation it will be put to the left or right of the existing | |
| 2403 * block. If possible we put the new line in the left block and move | |
| 2404 * the lines after it to the right block. Otherwise the new line is | |
| 2405 * also put in the right block. This method is more efficient when | |
| 2406 * inserting a lot of lines at one place. | |
| 2407 */ | |
| 2408 if (db_idx < 0) /* left block is new, right block is existing */ | |
| 2409 { | |
| 2410 lines_moved = 0; | |
| 2411 in_left = TRUE; | |
| 2412 /* space_needed does not change */ | |
| 2413 } | |
| 2414 else /* left block is existing, right block is new */ | |
| 2415 { | |
| 2416 lines_moved = line_count - db_idx - 1; | |
| 2417 if (lines_moved == 0) | |
| 2418 in_left = FALSE; /* put new line in right block */ | |
| 2419 /* space_needed does not change */ | |
| 2420 else | |
| 2421 { | |
| 2422 data_moved = ((dp->db_index[db_idx]) & DB_INDEX_MASK) - | |
| 2423 dp->db_txt_start; | |
| 2424 total_moved = data_moved + lines_moved * INDEX_SIZE; | |
| 2425 if ((int)dp->db_free + total_moved >= space_needed) | |
| 2426 { | |
| 2427 in_left = TRUE; /* put new line in left block */ | |
| 2428 space_needed = total_moved; | |
| 2429 } | |
| 2430 else | |
| 2431 { | |
| 2432 in_left = FALSE; /* put new line in right block */ | |
| 2433 space_needed += total_moved; | |
| 2434 } | |
| 2435 } | |
| 2436 } | |
| 2437 | |
| 2438 page_count = ((space_needed + HEADER_SIZE) + page_size - 1) / page_size; | |
| 2439 if ((hp_new = ml_new_data(mfp, newfile, page_count)) == NULL) | |
| 2440 { | |
| 2441 /* correct line counts in pointer blocks */ | |
| 2442 --(buf->b_ml.ml_locked_lineadd); | |
| 2443 --(buf->b_ml.ml_locked_high); | |
| 2444 return FAIL; | |
| 2445 } | |
| 2446 if (db_idx < 0) /* left block is new */ | |
| 2447 { | |
| 2448 hp_left = hp_new; | |
| 2449 hp_right = hp; | |
| 2450 line_count_left = 0; | |
| 2451 line_count_right = line_count; | |
| 2452 } | |
| 2453 else /* right block is new */ | |
| 2454 { | |
| 2455 hp_left = hp; | |
| 2456 hp_right = hp_new; | |
| 2457 line_count_left = line_count; | |
| 2458 line_count_right = 0; | |
| 2459 } | |
| 2460 dp_right = (DATA_BL *)(hp_right->bh_data); | |
| 2461 dp_left = (DATA_BL *)(hp_left->bh_data); | |
| 2462 bnum_left = hp_left->bh_bnum; | |
| 2463 bnum_right = hp_right->bh_bnum; | |
| 2464 page_count_left = hp_left->bh_page_count; | |
| 2465 page_count_right = hp_right->bh_page_count; | |
| 2466 | |
| 2467 /* | |
| 2468 * May move the new line into the right/new block. | |
| 2469 */ | |
| 2470 if (!in_left) | |
| 2471 { | |
| 2472 dp_right->db_txt_start -= len; | |
| 2473 dp_right->db_free -= len + INDEX_SIZE; | |
| 2474 dp_right->db_index[0] = dp_right->db_txt_start; | |
| 2475 if (mark) | |
| 2476 dp_right->db_index[0] |= DB_MARKED; | |
| 2477 | |
| 2478 mch_memmove((char *)dp_right + dp_right->db_txt_start, | |
| 2479 line, (size_t)len); | |
| 2480 ++line_count_right; | |
| 2481 } | |
| 2482 /* | |
| 2483 * may move lines from the left/old block to the right/new one. | |
| 2484 */ | |
| 2485 if (lines_moved) | |
| 2486 { | |
| 2487 /* | |
| 2488 */ | |
| 2489 dp_right->db_txt_start -= data_moved; | |
| 2490 dp_right->db_free -= total_moved; | |
| 2491 mch_memmove((char *)dp_right + dp_right->db_txt_start, | |
| 2492 (char *)dp_left + dp_left->db_txt_start, | |
| 2493 (size_t)data_moved); | |
| 2494 offset = dp_right->db_txt_start - dp_left->db_txt_start; | |
| 2495 dp_left->db_txt_start += data_moved; | |
| 2496 dp_left->db_free += total_moved; | |
| 2497 | |
| 2498 /* | |
| 2499 * update indexes in the new block | |
| 2500 */ | |
| 2501 for (to = line_count_right, from = db_idx + 1; | |
| 2502 from < line_count_left; ++from, ++to) | |
| 2503 dp_right->db_index[to] = dp->db_index[from] + offset; | |
| 2504 line_count_right += lines_moved; | |
| 2505 line_count_left -= lines_moved; | |
| 2506 } | |
| 2507 | |
| 2508 /* | |
| 2509 * May move the new line into the left (old or new) block. | |
| 2510 */ | |
| 2511 if (in_left) | |
| 2512 { | |
| 2513 dp_left->db_txt_start -= len; | |
| 2514 dp_left->db_free -= len + INDEX_SIZE; | |
| 2515 dp_left->db_index[line_count_left] = dp_left->db_txt_start; | |
| 2516 if (mark) | |
| 2517 dp_left->db_index[line_count_left] |= DB_MARKED; | |
| 2518 mch_memmove((char *)dp_left + dp_left->db_txt_start, | |
| 2519 line, (size_t)len); | |
| 2520 ++line_count_left; | |
| 2521 } | |
| 2522 | |
| 2523 if (db_idx < 0) /* left block is new */ | |
| 2524 { | |
| 2525 lnum_left = lnum + 1; | |
| 2526 lnum_right = 0; | |
| 2527 } | |
| 2528 else /* right block is new */ | |
| 2529 { | |
| 2530 lnum_left = 0; | |
| 2531 if (in_left) | |
| 2532 lnum_right = lnum + 2; | |
| 2533 else | |
| 2534 lnum_right = lnum + 1; | |
| 2535 } | |
| 2536 dp_left->db_line_count = line_count_left; | |
| 2537 dp_right->db_line_count = line_count_right; | |
| 2538 | |
| 2539 /* | |
| 2540 * release the two data blocks | |
| 2541 * The new one (hp_new) already has a correct blocknumber. | |
| 2542 * The old one (hp, in ml_locked) gets a positive blocknumber if | |
| 2543 * we changed it and we are not editing a new file. | |
| 2544 */ | |
| 2545 if (lines_moved || in_left) | |
| 2546 buf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 2547 if (!newfile && db_idx >= 0 && in_left) | |
| 2548 buf->b_ml.ml_flags |= ML_LOCKED_POS; | |
| 2549 mf_put(mfp, hp_new, TRUE, FALSE); | |
| 2550 | |
| 2551 /* | |
| 2552 * flush the old data block | |
| 2553 * set ml_locked_lineadd to 0, because the updating of the | |
| 2554 * pointer blocks is done below | |
| 2555 */ | |
| 2556 lineadd = buf->b_ml.ml_locked_lineadd; | |
| 2557 buf->b_ml.ml_locked_lineadd = 0; | |
| 2558 ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush data block */ | |
| 2559 | |
| 2560 /* | |
| 2561 * update pointer blocks for the new data block | |
| 2562 */ | |
| 2563 for (stack_idx = buf->b_ml.ml_stack_top - 1; stack_idx >= 0; | |
| 2564 --stack_idx) | |
| 2565 { | |
| 2566 ip = &(buf->b_ml.ml_stack[stack_idx]); | |
| 2567 pb_idx = ip->ip_index; | |
| 2568 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
| 2569 return FAIL; | |
| 2570 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
| 2571 if (pp->pb_id != PTR_ID) | |
| 2572 { | |
| 2573 EMSG(_("E317: pointer block id wrong 3")); | |
| 2574 mf_put(mfp, hp, FALSE, FALSE); | |
| 2575 return FAIL; | |
| 2576 } | |
| 2577 /* | |
| 2578 * TODO: If the pointer block is full and we are adding at the end | |
| 2579 * try to insert in front of the next block | |
| 2580 */ | |
| 2581 /* block not full, add one entry */ | |
| 2582 if (pp->pb_count < pp->pb_count_max) | |
| 2583 { | |
| 2584 if (pb_idx + 1 < (int)pp->pb_count) | |
| 2585 mch_memmove(&pp->pb_pointer[pb_idx + 2], | |
| 2586 &pp->pb_pointer[pb_idx + 1], | |
| 2587 (size_t)(pp->pb_count - pb_idx - 1) * sizeof(PTR_EN)); | |
| 2588 ++pp->pb_count; | |
| 2589 pp->pb_pointer[pb_idx].pe_line_count = line_count_left; | |
| 2590 pp->pb_pointer[pb_idx].pe_bnum = bnum_left; | |
| 2591 pp->pb_pointer[pb_idx].pe_page_count = page_count_left; | |
| 2592 pp->pb_pointer[pb_idx + 1].pe_line_count = line_count_right; | |
| 2593 pp->pb_pointer[pb_idx + 1].pe_bnum = bnum_right; | |
| 2594 pp->pb_pointer[pb_idx + 1].pe_page_count = page_count_right; | |
| 2595 | |
| 2596 if (lnum_left != 0) | |
| 2597 pp->pb_pointer[pb_idx].pe_old_lnum = lnum_left; | |
| 2598 if (lnum_right != 0) | |
| 2599 pp->pb_pointer[pb_idx + 1].pe_old_lnum = lnum_right; | |
| 2600 | |
| 2601 mf_put(mfp, hp, TRUE, FALSE); | |
| 2602 buf->b_ml.ml_stack_top = stack_idx + 1; /* truncate stack */ | |
| 2603 | |
| 2604 if (lineadd) | |
| 2605 { | |
| 2606 --(buf->b_ml.ml_stack_top); | |
| 1167 | 2607 /* fix line count for rest of blocks in the stack */ |
| 7 | 2608 ml_lineadd(buf, lineadd); |
| 2609 /* fix stack itself */ | |
| 2610 buf->b_ml.ml_stack[buf->b_ml.ml_stack_top].ip_high += | |
| 2611 lineadd; | |
| 2612 ++(buf->b_ml.ml_stack_top); | |
| 2613 } | |
| 2614 | |
| 2615 /* | |
| 2616 * We are finished, break the loop here. | |
| 2617 */ | |
| 2618 break; | |
| 2619 } | |
| 2620 else /* pointer block full */ | |
| 2621 { | |
| 2622 /* | |
| 2623 * split the pointer block | |
| 2624 * allocate a new pointer block | |
| 2625 * move some of the pointer into the new block | |
| 2626 * prepare for updating the parent block | |
| 2627 */ | |
| 2628 for (;;) /* do this twice when splitting block 1 */ | |
| 2629 { | |
| 2630 hp_new = ml_new_ptr(mfp); | |
| 2631 if (hp_new == NULL) /* TODO: try to fix tree */ | |
| 2632 return FAIL; | |
| 2633 pp_new = (PTR_BL *)(hp_new->bh_data); | |
| 2634 | |
| 2635 if (hp->bh_bnum != 1) | |
| 2636 break; | |
| 2637 | |
| 2638 /* | |
| 2639 * if block 1 becomes full the tree is given an extra level | |
| 2640 * The pointers from block 1 are moved into the new block. | |
| 2641 * block 1 is updated to point to the new block | |
| 2642 * then continue to split the new block | |
| 2643 */ | |
| 2644 mch_memmove(pp_new, pp, (size_t)page_size); | |
| 2645 pp->pb_count = 1; | |
| 2646 pp->pb_pointer[0].pe_bnum = hp_new->bh_bnum; | |
| 2647 pp->pb_pointer[0].pe_line_count = buf->b_ml.ml_line_count; | |
| 2648 pp->pb_pointer[0].pe_old_lnum = 1; | |
| 2649 pp->pb_pointer[0].pe_page_count = 1; | |
| 2650 mf_put(mfp, hp, TRUE, FALSE); /* release block 1 */ | |
| 2651 hp = hp_new; /* new block is to be split */ | |
| 2652 pp = pp_new; | |
| 2653 CHECK(stack_idx != 0, _("stack_idx should be 0")); | |
| 2654 ip->ip_index = 0; | |
| 2655 ++stack_idx; /* do block 1 again later */ | |
| 2656 } | |
| 2657 /* | |
| 2658 * move the pointers after the current one to the new block | |
| 2659 * If there are none, the new entry will be in the new block. | |
| 2660 */ | |
| 2661 total_moved = pp->pb_count - pb_idx - 1; | |
| 2662 if (total_moved) | |
| 2663 { | |
| 2664 mch_memmove(&pp_new->pb_pointer[0], | |
| 2665 &pp->pb_pointer[pb_idx + 1], | |
| 2666 (size_t)(total_moved) * sizeof(PTR_EN)); | |
| 2667 pp_new->pb_count = total_moved; | |
| 2668 pp->pb_count -= total_moved - 1; | |
| 2669 pp->pb_pointer[pb_idx + 1].pe_bnum = bnum_right; | |
| 2670 pp->pb_pointer[pb_idx + 1].pe_line_count = line_count_right; | |
| 2671 pp->pb_pointer[pb_idx + 1].pe_page_count = page_count_right; | |
| 2672 if (lnum_right) | |
| 2673 pp->pb_pointer[pb_idx + 1].pe_old_lnum = lnum_right; | |
| 2674 } | |
| 2675 else | |
| 2676 { | |
| 2677 pp_new->pb_count = 1; | |
| 2678 pp_new->pb_pointer[0].pe_bnum = bnum_right; | |
| 2679 pp_new->pb_pointer[0].pe_line_count = line_count_right; | |
| 2680 pp_new->pb_pointer[0].pe_page_count = page_count_right; | |
| 2681 pp_new->pb_pointer[0].pe_old_lnum = lnum_right; | |
| 2682 } | |
| 2683 pp->pb_pointer[pb_idx].pe_bnum = bnum_left; | |
| 2684 pp->pb_pointer[pb_idx].pe_line_count = line_count_left; | |
| 2685 pp->pb_pointer[pb_idx].pe_page_count = page_count_left; | |
| 2686 if (lnum_left) | |
| 2687 pp->pb_pointer[pb_idx].pe_old_lnum = lnum_left; | |
| 2688 lnum_left = 0; | |
| 2689 lnum_right = 0; | |
| 2690 | |
| 2691 /* | |
| 2692 * recompute line counts | |
| 2693 */ | |
| 2694 line_count_right = 0; | |
| 2695 for (i = 0; i < (int)pp_new->pb_count; ++i) | |
| 2696 line_count_right += pp_new->pb_pointer[i].pe_line_count; | |
| 2697 line_count_left = 0; | |
| 2698 for (i = 0; i < (int)pp->pb_count; ++i) | |
| 2699 line_count_left += pp->pb_pointer[i].pe_line_count; | |
| 2700 | |
| 2701 bnum_left = hp->bh_bnum; | |
| 2702 bnum_right = hp_new->bh_bnum; | |
| 2703 page_count_left = 1; | |
| 2704 page_count_right = 1; | |
| 2705 mf_put(mfp, hp, TRUE, FALSE); | |
| 2706 mf_put(mfp, hp_new, TRUE, FALSE); | |
| 2707 } | |
| 2708 } | |
| 2709 | |
| 2710 /* | |
| 2711 * Safety check: fallen out of for loop? | |
| 2712 */ | |
| 2713 if (stack_idx < 0) | |
| 2714 { | |
| 2715 EMSG(_("E318: Updated too many blocks?")); | |
| 2716 buf->b_ml.ml_stack_top = 0; /* invalidate stack */ | |
| 2717 } | |
| 2718 } | |
| 2719 | |
| 2720 #ifdef FEAT_BYTEOFF | |
| 2721 /* The line was inserted below 'lnum' */ | |
| 2722 ml_updatechunk(buf, lnum + 1, (long)len, ML_CHNK_ADDLINE); | |
| 2723 #endif | |
| 2724 #ifdef FEAT_NETBEANS_INTG | |
| 2725 if (usingNetbeans) | |
| 2726 { | |
| 2727 if (STRLEN(line) > 0) | |
| 835 | 2728 netbeans_inserted(buf, lnum+1, (colnr_T)0, line, (int)STRLEN(line)); |
| 34 | 2729 netbeans_inserted(buf, lnum+1, (colnr_T)STRLEN(line), |
| 7 | 2730 (char_u *)"\n", 1); |
| 2731 } | |
| 2732 #endif | |
| 2733 return OK; | |
| 2734 } | |
| 2735 | |
| 2736 /* | |
| 625 | 2737 * Replace line lnum, with buffering, in current buffer. |
| 7 | 2738 * |
| 720 | 2739 * If "copy" is TRUE, make a copy of the line, otherwise the line has been |
| 7 | 2740 * copied to allocated memory already. |
| 2741 * | |
| 2742 * Check: The caller of this function should probably also call | |
| 2743 * changed_lines(), unless update_screen(NOT_VALID) is used. | |
| 2744 * | |
| 2745 * return FAIL for failure, OK otherwise | |
| 2746 */ | |
| 2747 int | |
| 2748 ml_replace(lnum, line, copy) | |
| 2749 linenr_T lnum; | |
| 2750 char_u *line; | |
| 2751 int copy; | |
| 2752 { | |
| 2753 if (line == NULL) /* just checking... */ | |
| 2754 return FAIL; | |
| 2755 | |
| 2756 /* When starting up, we might still need to create the memfile */ | |
| 2757 if (curbuf->b_ml.ml_mfp == NULL && open_buffer(FALSE, NULL) == FAIL) | |
| 2758 return FAIL; | |
| 2759 | |
| 2760 if (copy && (line = vim_strsave(line)) == NULL) /* allocate memory */ | |
| 2761 return FAIL; | |
| 2762 #ifdef FEAT_NETBEANS_INTG | |
| 2763 if (usingNetbeans) | |
| 2764 { | |
| 2765 netbeans_removed(curbuf, lnum, 0, (long)STRLEN(ml_get(lnum))); | |
| 835 | 2766 netbeans_inserted(curbuf, lnum, 0, line, (int)STRLEN(line)); |
| 7 | 2767 } |
| 2768 #endif | |
| 2769 if (curbuf->b_ml.ml_line_lnum != lnum) /* other line buffered */ | |
| 2770 ml_flush_line(curbuf); /* flush it */ | |
| 2771 else if (curbuf->b_ml.ml_flags & ML_LINE_DIRTY) /* same line allocated */ | |
| 2772 vim_free(curbuf->b_ml.ml_line_ptr); /* free it */ | |
| 2773 curbuf->b_ml.ml_line_ptr = line; | |
| 2774 curbuf->b_ml.ml_line_lnum = lnum; | |
| 2775 curbuf->b_ml.ml_flags = (curbuf->b_ml.ml_flags | ML_LINE_DIRTY) & ~ML_EMPTY; | |
| 2776 | |
| 2777 return OK; | |
| 2778 } | |
| 2779 | |
| 2780 /* | |
| 625 | 2781 * Delete line 'lnum' in the current buffer. |
| 7 | 2782 * |
| 2783 * Check: The caller of this function should probably also call | |
| 2784 * deleted_lines() after this. | |
| 2785 * | |
| 2786 * return FAIL for failure, OK otherwise | |
| 2787 */ | |
| 2788 int | |
| 2789 ml_delete(lnum, message) | |
| 2790 linenr_T lnum; | |
| 2791 int message; | |
| 2792 { | |
| 2793 ml_flush_line(curbuf); | |
| 2794 return ml_delete_int(curbuf, lnum, message); | |
| 2795 } | |
| 2796 | |
| 2797 static int | |
| 2798 ml_delete_int(buf, lnum, message) | |
| 2799 buf_T *buf; | |
| 2800 linenr_T lnum; | |
| 2801 int message; | |
| 2802 { | |
| 2803 bhdr_T *hp; | |
| 2804 memfile_T *mfp; | |
| 2805 DATA_BL *dp; | |
| 2806 PTR_BL *pp; | |
| 2807 infoptr_T *ip; | |
| 2808 int count; /* number of entries in block */ | |
| 2809 int idx; | |
| 2810 int stack_idx; | |
| 2811 int text_start; | |
| 2812 int line_start; | |
| 2813 long line_size; | |
| 2814 int i; | |
| 2815 | |
| 2816 if (lnum < 1 || lnum > buf->b_ml.ml_line_count) | |
| 2817 return FAIL; | |
| 2818 | |
| 2819 if (lowest_marked && lowest_marked > lnum) | |
| 2820 lowest_marked--; | |
| 2821 | |
| 2822 /* | |
| 2823 * If the file becomes empty the last line is replaced by an empty line. | |
| 2824 */ | |
| 2825 if (buf->b_ml.ml_line_count == 1) /* file becomes empty */ | |
| 2826 { | |
| 2827 if (message | |
| 2828 #ifdef FEAT_NETBEANS_INTG | |
| 2829 && !netbeansSuppressNoLines | |
| 2830 #endif | |
| 2831 ) | |
| 680 | 2832 set_keep_msg((char_u *)_(no_lines_msg), 0); |
| 2833 | |
| 7 | 2834 /* FEAT_BYTEOFF already handled in there, dont worry 'bout it below */ |
| 2835 i = ml_replace((linenr_T)1, (char_u *)"", TRUE); | |
| 2836 buf->b_ml.ml_flags |= ML_EMPTY; | |
| 2837 | |
| 2838 return i; | |
| 2839 } | |
| 2840 | |
| 2841 /* | |
| 2842 * find the data block containing the line | |
| 2843 * This also fills the stack with the blocks from the root to the data block | |
| 2844 * This also releases any locked block. | |
| 2845 */ | |
| 2846 mfp = buf->b_ml.ml_mfp; | |
| 2847 if (mfp == NULL) | |
| 2848 return FAIL; | |
| 2849 | |
| 2850 if ((hp = ml_find_line(buf, lnum, ML_DELETE)) == NULL) | |
| 2851 return FAIL; | |
| 2852 | |
| 2853 dp = (DATA_BL *)(hp->bh_data); | |
| 2854 /* compute line count before the delete */ | |
| 2855 count = (long)(buf->b_ml.ml_locked_high) | |
| 2856 - (long)(buf->b_ml.ml_locked_low) + 2; | |
| 2857 idx = lnum - buf->b_ml.ml_locked_low; | |
| 2858 | |
| 2859 --buf->b_ml.ml_line_count; | |
| 2860 | |
| 2861 line_start = ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 2862 if (idx == 0) /* first line in block, text at the end */ | |
| 2863 line_size = dp->db_txt_end - line_start; | |
| 2864 else | |
| 2865 line_size = ((dp->db_index[idx - 1]) & DB_INDEX_MASK) - line_start; | |
| 2866 | |
| 2867 #ifdef FEAT_NETBEANS_INTG | |
| 2868 if (usingNetbeans) | |
| 34 | 2869 netbeans_removed(buf, lnum, 0, (long)line_size); |
| 7 | 2870 #endif |
| 2871 | |
| 2872 /* | |
| 2873 * special case: If there is only one line in the data block it becomes empty. | |
| 2874 * Then we have to remove the entry, pointing to this data block, from the | |
| 2875 * pointer block. If this pointer block also becomes empty, we go up another | |
| 2876 * block, and so on, up to the root if necessary. | |
| 2877 * The line counts in the pointer blocks have already been adjusted by | |
| 2878 * ml_find_line(). | |
| 2879 */ | |
| 2880 if (count == 1) | |
| 2881 { | |
| 2882 mf_free(mfp, hp); /* free the data block */ | |
| 2883 buf->b_ml.ml_locked = NULL; | |
| 2884 | |
| 2885 for (stack_idx = buf->b_ml.ml_stack_top - 1; stack_idx >= 0; --stack_idx) | |
| 2886 { | |
| 2887 buf->b_ml.ml_stack_top = 0; /* stack is invalid when failing */ | |
| 2888 ip = &(buf->b_ml.ml_stack[stack_idx]); | |
| 2889 idx = ip->ip_index; | |
| 2890 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
| 2891 return FAIL; | |
| 2892 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
| 2893 if (pp->pb_id != PTR_ID) | |
| 2894 { | |
| 2895 EMSG(_("E317: pointer block id wrong 4")); | |
| 2896 mf_put(mfp, hp, FALSE, FALSE); | |
| 2897 return FAIL; | |
| 2898 } | |
| 2899 count = --(pp->pb_count); | |
| 2900 if (count == 0) /* the pointer block becomes empty! */ | |
| 2901 mf_free(mfp, hp); | |
| 2902 else | |
| 2903 { | |
| 2904 if (count != idx) /* move entries after the deleted one */ | |
| 2905 mch_memmove(&pp->pb_pointer[idx], &pp->pb_pointer[idx + 1], | |
| 2906 (size_t)(count - idx) * sizeof(PTR_EN)); | |
| 2907 mf_put(mfp, hp, TRUE, FALSE); | |
| 2908 | |
| 2909 buf->b_ml.ml_stack_top = stack_idx; /* truncate stack */ | |
| 1167 | 2910 /* fix line count for rest of blocks in the stack */ |
| 2911 if (buf->b_ml.ml_locked_lineadd != 0) | |
| 7 | 2912 { |
| 2913 ml_lineadd(buf, buf->b_ml.ml_locked_lineadd); | |
| 2914 buf->b_ml.ml_stack[buf->b_ml.ml_stack_top].ip_high += | |
| 1167 | 2915 buf->b_ml.ml_locked_lineadd; |
| 7 | 2916 } |
| 2917 ++(buf->b_ml.ml_stack_top); | |
| 2918 | |
| 2919 break; | |
| 2920 } | |
| 2921 } | |
| 2922 CHECK(stack_idx < 0, _("deleted block 1?")); | |
| 2923 } | |
| 2924 else | |
| 2925 { | |
| 2926 /* | |
| 2927 * delete the text by moving the next lines forwards | |
| 2928 */ | |
| 2929 text_start = dp->db_txt_start; | |
| 2930 mch_memmove((char *)dp + text_start + line_size, | |
| 2931 (char *)dp + text_start, (size_t)(line_start - text_start)); | |
| 2932 | |
| 2933 /* | |
| 2934 * delete the index by moving the next indexes backwards | |
| 2935 * Adjust the indexes for the text movement. | |
| 2936 */ | |
| 2937 for (i = idx; i < count - 1; ++i) | |
| 2938 dp->db_index[i] = dp->db_index[i + 1] + line_size; | |
| 2939 | |
| 2940 dp->db_free += line_size + INDEX_SIZE; | |
| 2941 dp->db_txt_start += line_size; | |
| 2942 --(dp->db_line_count); | |
| 2943 | |
| 2944 /* | |
| 2945 * mark the block dirty and make sure it is in the file (for recovery) | |
| 2946 */ | |
| 2947 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 2948 } | |
| 2949 | |
| 2950 #ifdef FEAT_BYTEOFF | |
| 2951 ml_updatechunk(buf, lnum, line_size, ML_CHNK_DELLINE); | |
| 2952 #endif | |
| 2953 return OK; | |
| 2954 } | |
| 2955 | |
| 2956 /* | |
| 2957 * set the B_MARKED flag for line 'lnum' | |
| 2958 */ | |
| 2959 void | |
| 2960 ml_setmarked(lnum) | |
| 2961 linenr_T lnum; | |
| 2962 { | |
| 2963 bhdr_T *hp; | |
| 2964 DATA_BL *dp; | |
| 2965 /* invalid line number */ | |
| 2966 if (lnum < 1 || lnum > curbuf->b_ml.ml_line_count | |
| 2967 || curbuf->b_ml.ml_mfp == NULL) | |
| 2968 return; /* give error message? */ | |
| 2969 | |
| 2970 if (lowest_marked == 0 || lowest_marked > lnum) | |
| 2971 lowest_marked = lnum; | |
| 2972 | |
| 2973 /* | |
| 2974 * find the data block containing the line | |
| 2975 * This also fills the stack with the blocks from the root to the data block | |
| 2976 * This also releases any locked block. | |
| 2977 */ | |
| 2978 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
| 2979 return; /* give error message? */ | |
| 2980 | |
| 2981 dp = (DATA_BL *)(hp->bh_data); | |
| 2982 dp->db_index[lnum - curbuf->b_ml.ml_locked_low] |= DB_MARKED; | |
| 2983 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 2984 } | |
| 2985 | |
| 2986 /* | |
| 2987 * find the first line with its B_MARKED flag set | |
| 2988 */ | |
| 2989 linenr_T | |
| 2990 ml_firstmarked() | |
| 2991 { | |
| 2992 bhdr_T *hp; | |
| 2993 DATA_BL *dp; | |
| 2994 linenr_T lnum; | |
| 2995 int i; | |
| 2996 | |
| 2997 if (curbuf->b_ml.ml_mfp == NULL) | |
| 2998 return (linenr_T) 0; | |
| 2999 | |
| 3000 /* | |
| 3001 * The search starts with lowest_marked line. This is the last line where | |
| 3002 * a mark was found, adjusted by inserting/deleting lines. | |
| 3003 */ | |
| 3004 for (lnum = lowest_marked; lnum <= curbuf->b_ml.ml_line_count; ) | |
| 3005 { | |
| 3006 /* | |
| 3007 * Find the data block containing the line. | |
| 3008 * This also fills the stack with the blocks from the root to the data | |
| 3009 * block This also releases any locked block. | |
| 3010 */ | |
| 3011 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
| 3012 return (linenr_T)0; /* give error message? */ | |
| 3013 | |
| 3014 dp = (DATA_BL *)(hp->bh_data); | |
| 3015 | |
| 3016 for (i = lnum - curbuf->b_ml.ml_locked_low; | |
| 3017 lnum <= curbuf->b_ml.ml_locked_high; ++i, ++lnum) | |
| 3018 if ((dp->db_index[i]) & DB_MARKED) | |
| 3019 { | |
| 3020 (dp->db_index[i]) &= DB_INDEX_MASK; | |
| 3021 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 3022 lowest_marked = lnum + 1; | |
| 3023 return lnum; | |
| 3024 } | |
| 3025 } | |
| 3026 | |
| 3027 return (linenr_T) 0; | |
| 3028 } | |
| 3029 | |
| 3030 #if 0 /* not used */ | |
| 3031 /* | |
| 3032 * return TRUE if line 'lnum' has a mark | |
| 3033 */ | |
| 3034 int | |
| 3035 ml_has_mark(lnum) | |
| 3036 linenr_T lnum; | |
| 3037 { | |
| 3038 bhdr_T *hp; | |
| 3039 DATA_BL *dp; | |
| 3040 | |
| 3041 if (curbuf->b_ml.ml_mfp == NULL | |
| 3042 || (hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
| 3043 return FALSE; | |
| 3044 | |
| 3045 dp = (DATA_BL *)(hp->bh_data); | |
| 3046 return (int)((dp->db_index[lnum - curbuf->b_ml.ml_locked_low]) & DB_MARKED); | |
| 3047 } | |
| 3048 #endif | |
| 3049 | |
| 3050 /* | |
| 3051 * clear all DB_MARKED flags | |
| 3052 */ | |
| 3053 void | |
| 3054 ml_clearmarked() | |
| 3055 { | |
| 3056 bhdr_T *hp; | |
| 3057 DATA_BL *dp; | |
| 3058 linenr_T lnum; | |
| 3059 int i; | |
| 3060 | |
| 3061 if (curbuf->b_ml.ml_mfp == NULL) /* nothing to do */ | |
| 3062 return; | |
| 3063 | |
| 3064 /* | |
| 3065 * The search starts with line lowest_marked. | |
| 3066 */ | |
| 3067 for (lnum = lowest_marked; lnum <= curbuf->b_ml.ml_line_count; ) | |
| 3068 { | |
| 3069 /* | |
| 3070 * Find the data block containing the line. | |
| 3071 * This also fills the stack with the blocks from the root to the data | |
| 3072 * block and releases any locked block. | |
| 3073 */ | |
| 3074 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
| 3075 return; /* give error message? */ | |
| 3076 | |
| 3077 dp = (DATA_BL *)(hp->bh_data); | |
| 3078 | |
| 3079 for (i = lnum - curbuf->b_ml.ml_locked_low; | |
| 3080 lnum <= curbuf->b_ml.ml_locked_high; ++i, ++lnum) | |
| 3081 if ((dp->db_index[i]) & DB_MARKED) | |
| 3082 { | |
| 3083 (dp->db_index[i]) &= DB_INDEX_MASK; | |
| 3084 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 3085 } | |
| 3086 } | |
| 3087 | |
| 3088 lowest_marked = 0; | |
| 3089 return; | |
| 3090 } | |
| 3091 | |
| 3092 /* | |
| 3093 * flush ml_line if necessary | |
| 3094 */ | |
| 3095 static void | |
| 3096 ml_flush_line(buf) | |
| 3097 buf_T *buf; | |
| 3098 { | |
| 3099 bhdr_T *hp; | |
| 3100 DATA_BL *dp; | |
| 3101 linenr_T lnum; | |
| 3102 char_u *new_line; | |
| 3103 char_u *old_line; | |
| 3104 colnr_T new_len; | |
| 3105 int old_len; | |
| 3106 int extra; | |
| 3107 int idx; | |
| 3108 int start; | |
| 3109 int count; | |
| 3110 int i; | |
|
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|
3111 static int entered = FALSE; |
| 7 | 3112 |
| 3113 if (buf->b_ml.ml_line_lnum == 0 || buf->b_ml.ml_mfp == NULL) | |
| 3114 return; /* nothing to do */ | |
| 3115 | |
| 3116 if (buf->b_ml.ml_flags & ML_LINE_DIRTY) | |
| 3117 { | |
|
2075
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|
3118 /* This code doesn't work recursively, but Netbeans may call back here |
|
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|
3119 * when obtaining the cursor position. */ |
|
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diff
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|
3120 if (entered) |
|
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|
3121 return; |
|
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|
3122 entered = TRUE; |
|
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|
3123 |
| 7 | 3124 lnum = buf->b_ml.ml_line_lnum; |
| 3125 new_line = buf->b_ml.ml_line_ptr; | |
| 3126 | |
| 3127 hp = ml_find_line(buf, lnum, ML_FIND); | |
| 3128 if (hp == NULL) | |
| 3129 EMSGN(_("E320: Cannot find line %ld"), lnum); | |
| 3130 else | |
| 3131 { | |
| 3132 dp = (DATA_BL *)(hp->bh_data); | |
| 3133 idx = lnum - buf->b_ml.ml_locked_low; | |
| 3134 start = ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 3135 old_line = (char_u *)dp + start; | |
| 3136 if (idx == 0) /* line is last in block */ | |
| 3137 old_len = dp->db_txt_end - start; | |
| 3138 else /* text of previous line follows */ | |
| 3139 old_len = (dp->db_index[idx - 1] & DB_INDEX_MASK) - start; | |
| 3140 new_len = (colnr_T)STRLEN(new_line) + 1; | |
| 3141 extra = new_len - old_len; /* negative if lines gets smaller */ | |
| 3142 | |
| 3143 /* | |
| 3144 * if new line fits in data block, replace directly | |
| 3145 */ | |
| 3146 if ((int)dp->db_free >= extra) | |
| 3147 { | |
| 3148 /* if the length changes and there are following lines */ | |
| 3149 count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low + 1; | |
| 3150 if (extra != 0 && idx < count - 1) | |
| 3151 { | |
| 3152 /* move text of following lines */ | |
| 3153 mch_memmove((char *)dp + dp->db_txt_start - extra, | |
| 3154 (char *)dp + dp->db_txt_start, | |
| 3155 (size_t)(start - dp->db_txt_start)); | |
| 3156 | |
| 3157 /* adjust pointers of this and following lines */ | |
| 3158 for (i = idx + 1; i < count; ++i) | |
| 3159 dp->db_index[i] -= extra; | |
| 3160 } | |
| 3161 dp->db_index[idx] -= extra; | |
| 3162 | |
| 3163 /* adjust free space */ | |
| 3164 dp->db_free -= extra; | |
| 3165 dp->db_txt_start -= extra; | |
| 3166 | |
| 3167 /* copy new line into the data block */ | |
| 3168 mch_memmove(old_line - extra, new_line, (size_t)new_len); | |
| 3169 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 3170 #ifdef FEAT_BYTEOFF | |
| 3171 /* The else case is already covered by the insert and delete */ | |
| 3172 ml_updatechunk(buf, lnum, (long)extra, ML_CHNK_UPDLINE); | |
| 3173 #endif | |
| 3174 } | |
| 3175 else | |
| 3176 { | |
| 3177 /* | |
| 3178 * Cannot do it in one data block: Delete and append. | |
| 3179 * Append first, because ml_delete_int() cannot delete the | |
| 3180 * last line in a buffer, which causes trouble for a buffer | |
| 3181 * that has only one line. | |
| 3182 * Don't forget to copy the mark! | |
| 3183 */ | |
| 3184 /* How about handling errors??? */ | |
| 3185 (void)ml_append_int(buf, lnum, new_line, new_len, FALSE, | |
| 3186 (dp->db_index[idx] & DB_MARKED)); | |
| 3187 (void)ml_delete_int(buf, lnum, FALSE); | |
| 3188 } | |
| 3189 } | |
| 3190 vim_free(new_line); | |
|
2075
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|
3191 |
|
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diff
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|
3192 entered = FALSE; |
| 7 | 3193 } |
| 3194 | |
| 3195 buf->b_ml.ml_line_lnum = 0; | |
| 3196 } | |
| 3197 | |
| 3198 /* | |
| 3199 * create a new, empty, data block | |
| 3200 */ | |
| 3201 static bhdr_T * | |
| 3202 ml_new_data(mfp, negative, page_count) | |
| 3203 memfile_T *mfp; | |
| 3204 int negative; | |
| 3205 int page_count; | |
| 3206 { | |
| 3207 bhdr_T *hp; | |
| 3208 DATA_BL *dp; | |
| 3209 | |
| 3210 if ((hp = mf_new(mfp, negative, page_count)) == NULL) | |
| 3211 return NULL; | |
| 3212 | |
| 3213 dp = (DATA_BL *)(hp->bh_data); | |
| 3214 dp->db_id = DATA_ID; | |
| 3215 dp->db_txt_start = dp->db_txt_end = page_count * mfp->mf_page_size; | |
| 3216 dp->db_free = dp->db_txt_start - HEADER_SIZE; | |
| 3217 dp->db_line_count = 0; | |
| 3218 | |
| 3219 return hp; | |
| 3220 } | |
| 3221 | |
| 3222 /* | |
| 3223 * create a new, empty, pointer block | |
| 3224 */ | |
| 3225 static bhdr_T * | |
| 3226 ml_new_ptr(mfp) | |
| 3227 memfile_T *mfp; | |
| 3228 { | |
| 3229 bhdr_T *hp; | |
| 3230 PTR_BL *pp; | |
| 3231 | |
| 3232 if ((hp = mf_new(mfp, FALSE, 1)) == NULL) | |
| 3233 return NULL; | |
| 3234 | |
| 3235 pp = (PTR_BL *)(hp->bh_data); | |
| 3236 pp->pb_id = PTR_ID; | |
| 3237 pp->pb_count = 0; | |
| 3238 pp->pb_count_max = (short_u)((mfp->mf_page_size - sizeof(PTR_BL)) / sizeof(PTR_EN) + 1); | |
| 3239 | |
| 3240 return hp; | |
| 3241 } | |
| 3242 | |
| 3243 /* | |
| 3244 * lookup line 'lnum' in a memline | |
| 3245 * | |
| 3246 * action: if ML_DELETE or ML_INSERT the line count is updated while searching | |
| 3247 * if ML_FLUSH only flush a locked block | |
| 3248 * if ML_FIND just find the line | |
| 3249 * | |
| 3250 * If the block was found it is locked and put in ml_locked. | |
| 3251 * The stack is updated to lead to the locked block. The ip_high field in | |
| 3252 * the stack is updated to reflect the last line in the block AFTER the | |
| 3253 * insert or delete, also if the pointer block has not been updated yet. But | |
| 1167 | 3254 * if ml_locked != NULL ml_locked_lineadd must be added to ip_high. |
| 7 | 3255 * |
| 3256 * return: NULL for failure, pointer to block header otherwise | |
| 3257 */ | |
| 3258 static bhdr_T * | |
| 3259 ml_find_line(buf, lnum, action) | |
| 3260 buf_T *buf; | |
| 3261 linenr_T lnum; | |
| 3262 int action; | |
| 3263 { | |
| 3264 DATA_BL *dp; | |
| 3265 PTR_BL *pp; | |
| 3266 infoptr_T *ip; | |
| 3267 bhdr_T *hp; | |
| 3268 memfile_T *mfp; | |
| 3269 linenr_T t; | |
| 3270 blocknr_T bnum, bnum2; | |
| 3271 int dirty; | |
| 3272 linenr_T low, high; | |
| 3273 int top; | |
| 3274 int page_count; | |
| 3275 int idx; | |
| 3276 | |
| 3277 mfp = buf->b_ml.ml_mfp; | |
| 3278 | |
| 3279 /* | |
| 3280 * If there is a locked block check if the wanted line is in it. | |
| 3281 * If not, flush and release the locked block. | |
| 3282 * Don't do this for ML_INSERT_SAME, because the stack need to be updated. | |
| 3283 * Don't do this for ML_FLUSH, because we want to flush the locked block. | |
| 1066 | 3284 * Don't do this when 'swapfile' is reset, we want to load all the blocks. |
| 7 | 3285 */ |
| 3286 if (buf->b_ml.ml_locked) | |
| 3287 { | |
| 1066 | 3288 if (ML_SIMPLE(action) |
| 3289 && buf->b_ml.ml_locked_low <= lnum | |
| 3290 && buf->b_ml.ml_locked_high >= lnum | |
| 3291 && !mf_dont_release) | |
| 7 | 3292 { |
| 1066 | 3293 /* remember to update pointer blocks and stack later */ |
| 7 | 3294 if (action == ML_INSERT) |
| 3295 { | |
| 3296 ++(buf->b_ml.ml_locked_lineadd); | |
| 3297 ++(buf->b_ml.ml_locked_high); | |
| 3298 } | |
| 3299 else if (action == ML_DELETE) | |
| 3300 { | |
| 3301 --(buf->b_ml.ml_locked_lineadd); | |
| 3302 --(buf->b_ml.ml_locked_high); | |
| 3303 } | |
| 3304 return (buf->b_ml.ml_locked); | |
| 3305 } | |
| 3306 | |
| 3307 mf_put(mfp, buf->b_ml.ml_locked, buf->b_ml.ml_flags & ML_LOCKED_DIRTY, | |
| 3308 buf->b_ml.ml_flags & ML_LOCKED_POS); | |
| 3309 buf->b_ml.ml_locked = NULL; | |
| 3310 | |
| 1167 | 3311 /* |
| 3312 * If lines have been added or deleted in the locked block, need to | |
| 3313 * update the line count in pointer blocks. | |
| 3314 */ | |
| 3315 if (buf->b_ml.ml_locked_lineadd != 0) | |
| 7 | 3316 ml_lineadd(buf, buf->b_ml.ml_locked_lineadd); |
| 3317 } | |
| 3318 | |
| 3319 if (action == ML_FLUSH) /* nothing else to do */ | |
| 3320 return NULL; | |
| 3321 | |
| 3322 bnum = 1; /* start at the root of the tree */ | |
| 3323 page_count = 1; | |
| 3324 low = 1; | |
| 3325 high = buf->b_ml.ml_line_count; | |
| 3326 | |
| 3327 if (action == ML_FIND) /* first try stack entries */ | |
| 3328 { | |
| 3329 for (top = buf->b_ml.ml_stack_top - 1; top >= 0; --top) | |
| 3330 { | |
| 3331 ip = &(buf->b_ml.ml_stack[top]); | |
| 3332 if (ip->ip_low <= lnum && ip->ip_high >= lnum) | |
| 3333 { | |
| 3334 bnum = ip->ip_bnum; | |
| 3335 low = ip->ip_low; | |
| 3336 high = ip->ip_high; | |
| 3337 buf->b_ml.ml_stack_top = top; /* truncate stack at prev entry */ | |
| 3338 break; | |
| 3339 } | |
| 3340 } | |
| 3341 if (top < 0) | |
| 3342 buf->b_ml.ml_stack_top = 0; /* not found, start at the root */ | |
| 3343 } | |
| 3344 else /* ML_DELETE or ML_INSERT */ | |
| 3345 buf->b_ml.ml_stack_top = 0; /* start at the root */ | |
| 3346 | |
| 3347 /* | |
| 3348 * search downwards in the tree until a data block is found | |
| 3349 */ | |
| 3350 for (;;) | |
| 3351 { | |
| 3352 if ((hp = mf_get(mfp, bnum, page_count)) == NULL) | |
| 3353 goto error_noblock; | |
| 3354 | |
| 3355 /* | |
| 3356 * update high for insert/delete | |
| 3357 */ | |
| 3358 if (action == ML_INSERT) | |
| 3359 ++high; | |
| 3360 else if (action == ML_DELETE) | |
| 3361 --high; | |
| 3362 | |
| 3363 dp = (DATA_BL *)(hp->bh_data); | |
| 3364 if (dp->db_id == DATA_ID) /* data block */ | |
| 3365 { | |
| 3366 buf->b_ml.ml_locked = hp; | |
| 3367 buf->b_ml.ml_locked_low = low; | |
| 3368 buf->b_ml.ml_locked_high = high; | |
| 3369 buf->b_ml.ml_locked_lineadd = 0; | |
| 3370 buf->b_ml.ml_flags &= ~(ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 3371 return hp; | |
| 3372 } | |
| 3373 | |
| 3374 pp = (PTR_BL *)(dp); /* must be pointer block */ | |
| 3375 if (pp->pb_id != PTR_ID) | |
| 3376 { | |
| 3377 EMSG(_("E317: pointer block id wrong")); | |
| 3378 goto error_block; | |
| 3379 } | |
| 3380 | |
| 3381 if ((top = ml_add_stack(buf)) < 0) /* add new entry to stack */ | |
| 3382 goto error_block; | |
| 3383 ip = &(buf->b_ml.ml_stack[top]); | |
| 3384 ip->ip_bnum = bnum; | |
| 3385 ip->ip_low = low; | |
| 3386 ip->ip_high = high; | |
| 3387 ip->ip_index = -1; /* index not known yet */ | |
| 3388 | |
| 3389 dirty = FALSE; | |
| 3390 for (idx = 0; idx < (int)pp->pb_count; ++idx) | |
| 3391 { | |
| 3392 t = pp->pb_pointer[idx].pe_line_count; | |
| 3393 CHECK(t == 0, _("pe_line_count is zero")); | |
| 3394 if ((low += t) > lnum) | |
| 3395 { | |
| 3396 ip->ip_index = idx; | |
| 3397 bnum = pp->pb_pointer[idx].pe_bnum; | |
| 3398 page_count = pp->pb_pointer[idx].pe_page_count; | |
| 3399 high = low - 1; | |
| 3400 low -= t; | |
| 3401 | |
| 3402 /* | |
| 3403 * a negative block number may have been changed | |
| 3404 */ | |
| 3405 if (bnum < 0) | |
| 3406 { | |
| 3407 bnum2 = mf_trans_del(mfp, bnum); | |
| 3408 if (bnum != bnum2) | |
| 3409 { | |
| 3410 bnum = bnum2; | |
| 3411 pp->pb_pointer[idx].pe_bnum = bnum; | |
| 3412 dirty = TRUE; | |
| 3413 } | |
| 3414 } | |
| 3415 | |
| 3416 break; | |
| 3417 } | |
| 3418 } | |
| 3419 if (idx >= (int)pp->pb_count) /* past the end: something wrong! */ | |
| 3420 { | |
| 3421 if (lnum > buf->b_ml.ml_line_count) | |
| 3422 EMSGN(_("E322: line number out of range: %ld past the end"), | |
| 3423 lnum - buf->b_ml.ml_line_count); | |
| 3424 | |
| 3425 else | |
| 3426 EMSGN(_("E323: line count wrong in block %ld"), bnum); | |
| 3427 goto error_block; | |
| 3428 } | |
| 3429 if (action == ML_DELETE) | |
| 3430 { | |
| 3431 pp->pb_pointer[idx].pe_line_count--; | |
| 3432 dirty = TRUE; | |
| 3433 } | |
| 3434 else if (action == ML_INSERT) | |
| 3435 { | |
| 3436 pp->pb_pointer[idx].pe_line_count++; | |
| 3437 dirty = TRUE; | |
| 3438 } | |
| 3439 mf_put(mfp, hp, dirty, FALSE); | |
| 3440 } | |
| 3441 | |
| 3442 error_block: | |
| 3443 mf_put(mfp, hp, FALSE, FALSE); | |
| 3444 error_noblock: | |
| 3445 /* | |
| 3446 * If action is ML_DELETE or ML_INSERT we have to correct the tree for | |
| 3447 * the incremented/decremented line counts, because there won't be a line | |
| 3448 * inserted/deleted after all. | |
| 3449 */ | |
| 3450 if (action == ML_DELETE) | |
| 3451 ml_lineadd(buf, 1); | |
| 3452 else if (action == ML_INSERT) | |
| 3453 ml_lineadd(buf, -1); | |
| 3454 buf->b_ml.ml_stack_top = 0; | |
| 3455 return NULL; | |
| 3456 } | |
| 3457 | |
| 3458 /* | |
| 3459 * add an entry to the info pointer stack | |
| 3460 * | |
| 3461 * return -1 for failure, number of the new entry otherwise | |
| 3462 */ | |
| 3463 static int | |
| 3464 ml_add_stack(buf) | |
| 3465 buf_T *buf; | |
| 3466 { | |
| 3467 int top; | |
| 3468 infoptr_T *newstack; | |
| 3469 | |
| 3470 top = buf->b_ml.ml_stack_top; | |
| 3471 | |
| 3472 /* may have to increase the stack size */ | |
| 3473 if (top == buf->b_ml.ml_stack_size) | |
| 3474 { | |
| 3475 CHECK(top > 0, _("Stack size increases")); /* more than 5 levels??? */ | |
| 3476 | |
| 3477 newstack = (infoptr_T *)alloc((unsigned)sizeof(infoptr_T) * | |
| 3478 (buf->b_ml.ml_stack_size + STACK_INCR)); | |
| 3479 if (newstack == NULL) | |
| 3480 return -1; | |
| 1624 | 3481 mch_memmove(newstack, buf->b_ml.ml_stack, |
| 3482 (size_t)top * sizeof(infoptr_T)); | |
| 7 | 3483 vim_free(buf->b_ml.ml_stack); |
| 3484 buf->b_ml.ml_stack = newstack; | |
| 3485 buf->b_ml.ml_stack_size += STACK_INCR; | |
| 3486 } | |
| 3487 | |
| 3488 buf->b_ml.ml_stack_top++; | |
| 3489 return top; | |
| 3490 } | |
| 3491 | |
| 3492 /* | |
| 3493 * Update the pointer blocks on the stack for inserted/deleted lines. | |
| 3494 * The stack itself is also updated. | |
| 3495 * | |
| 3496 * When a insert/delete line action fails, the line is not inserted/deleted, | |
| 3497 * but the pointer blocks have already been updated. That is fixed here by | |
| 3498 * walking through the stack. | |
| 3499 * | |
| 3500 * Count is the number of lines added, negative if lines have been deleted. | |
| 3501 */ | |
| 3502 static void | |
| 3503 ml_lineadd(buf, count) | |
| 3504 buf_T *buf; | |
| 3505 int count; | |
| 3506 { | |
| 3507 int idx; | |
| 3508 infoptr_T *ip; | |
| 3509 PTR_BL *pp; | |
| 3510 memfile_T *mfp = buf->b_ml.ml_mfp; | |
| 3511 bhdr_T *hp; | |
| 3512 | |
| 3513 for (idx = buf->b_ml.ml_stack_top - 1; idx >= 0; --idx) | |
| 3514 { | |
| 3515 ip = &(buf->b_ml.ml_stack[idx]); | |
| 3516 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
| 3517 break; | |
| 3518 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
| 3519 if (pp->pb_id != PTR_ID) | |
| 3520 { | |
| 3521 mf_put(mfp, hp, FALSE, FALSE); | |
| 3522 EMSG(_("E317: pointer block id wrong 2")); | |
| 3523 break; | |
| 3524 } | |
| 3525 pp->pb_pointer[ip->ip_index].pe_line_count += count; | |
| 3526 ip->ip_high += count; | |
| 3527 mf_put(mfp, hp, TRUE, FALSE); | |
| 3528 } | |
| 3529 } | |
| 3530 | |
| 594 | 3531 #ifdef HAVE_READLINK |
| 3532 /* | |
| 3533 * Resolve a symlink in the last component of a file name. | |
| 3534 * Note that f_resolve() does it for every part of the path, we don't do that | |
| 3535 * here. | |
| 3536 * If it worked returns OK and the resolved link in "buf[MAXPATHL]". | |
| 3537 * Otherwise returns FAIL. | |
| 3538 */ | |
| 3539 static int | |
| 3540 resolve_symlink(fname, buf) | |
| 3541 char_u *fname; | |
| 3542 char_u *buf; | |
| 3543 { | |
| 3544 char_u tmp[MAXPATHL]; | |
| 3545 int ret; | |
| 3546 int depth = 0; | |
| 3547 | |
| 3548 if (fname == NULL) | |
| 3549 return FAIL; | |
| 3550 | |
| 3551 /* Put the result so far in tmp[], starting with the original name. */ | |
| 3552 vim_strncpy(tmp, fname, MAXPATHL - 1); | |
| 3553 | |
| 3554 for (;;) | |
| 3555 { | |
| 3556 /* Limit symlink depth to 100, catch recursive loops. */ | |
| 3557 if (++depth == 100) | |
| 3558 { | |
| 3559 EMSG2(_("E773: Symlink loop for \"%s\""), fname); | |
| 3560 return FAIL; | |
| 3561 } | |
| 3562 | |
| 3563 ret = readlink((char *)tmp, (char *)buf, MAXPATHL - 1); | |
| 3564 if (ret <= 0) | |
| 3565 { | |
| 619 | 3566 if (errno == EINVAL || errno == ENOENT) |
| 594 | 3567 { |
| 619 | 3568 /* Found non-symlink or not existing file, stop here. |
| 1855 | 3569 * When at the first level use the unmodified name, skip the |
| 594 | 3570 * call to vim_FullName(). */ |
| 3571 if (depth == 1) | |
| 3572 return FAIL; | |
| 3573 | |
| 3574 /* Use the resolved name in tmp[]. */ | |
| 3575 break; | |
| 3576 } | |
| 3577 | |
| 3578 /* There must be some error reading links, use original name. */ | |
| 3579 return FAIL; | |
| 3580 } | |
| 3581 buf[ret] = NUL; | |
| 3582 | |
| 3583 /* | |
| 3584 * Check whether the symlink is relative or absolute. | |
| 3585 * If it's relative, build a new path based on the directory | |
| 3586 * portion of the filename (if any) and the path the symlink | |
| 3587 * points to. | |
| 3588 */ | |
| 3589 if (mch_isFullName(buf)) | |
| 3590 STRCPY(tmp, buf); | |
| 3591 else | |
| 3592 { | |
| 3593 char_u *tail; | |
| 3594 | |
| 3595 tail = gettail(tmp); | |
| 3596 if (STRLEN(tail) + STRLEN(buf) >= MAXPATHL) | |
| 3597 return FAIL; | |
| 3598 STRCPY(tail, buf); | |
| 3599 } | |
| 3600 } | |
| 3601 | |
| 3602 /* | |
| 3603 * Try to resolve the full name of the file so that the swapfile name will | |
| 3604 * be consistent even when opening a relative symlink from different | |
| 3605 * working directories. | |
| 3606 */ | |
| 3607 return vim_FullName(tmp, buf, MAXPATHL, TRUE); | |
| 3608 } | |
| 3609 #endif | |
| 3610 | |
| 7 | 3611 /* |
| 460 | 3612 * Make swap file name out of the file name and a directory name. |
| 3613 * Returns pointer to allocated memory or NULL. | |
| 7 | 3614 */ |
| 460 | 3615 char_u * |
| 3616 makeswapname(fname, ffname, buf, dir_name) | |
| 3617 char_u *fname; | |
| 1978 | 3618 char_u *ffname UNUSED; |
| 7 | 3619 buf_T *buf; |
| 3620 char_u *dir_name; | |
| 3621 { | |
| 3622 char_u *r, *s; | |
|
2145
de0e7ca61893
updated for version 7.2.427
Bram Moolenaar <bram@zimbu.org>
parents:
2108
diff
changeset
|
3623 char_u *fname_res = fname; |
| 594 | 3624 #ifdef HAVE_READLINK |
| 3625 char_u fname_buf[MAXPATHL]; | |
| 3626 #endif | |
| 7 | 3627 |
| 3628 #if defined(UNIX) || defined(WIN3264) /* Need _very_ long file names */ | |
| 3629 s = dir_name + STRLEN(dir_name); | |
| 39 | 3630 if (after_pathsep(dir_name, s) && s[-1] == s[-2]) |
| 7 | 3631 { /* Ends with '//', Use Full path */ |
| 3632 r = NULL; | |
| 460 | 3633 if ((s = make_percent_swname(dir_name, fname)) != NULL) |
| 7 | 3634 { |
| 3635 r = modname(s, (char_u *)".swp", FALSE); | |
| 3636 vim_free(s); | |
| 3637 } | |
| 3638 return r; | |
| 3639 } | |
| 3640 #endif | |
| 3641 | |
| 594 | 3642 #ifdef HAVE_READLINK |
| 3643 /* Expand symlink in the file name, so that we put the swap file with the | |
| 3644 * actual file instead of with the symlink. */ | |
| 3645 if (resolve_symlink(fname, fname_buf) == OK) | |
| 3646 fname_res = fname_buf; | |
| 3647 #endif | |
| 3648 | |
| 7 | 3649 r = buf_modname( |
| 3650 #ifdef SHORT_FNAME | |
| 3651 TRUE, | |
| 3652 #else | |
| 3653 (buf->b_p_sn || buf->b_shortname), | |
| 3654 #endif | |
| 1082 | 3655 #ifdef RISCOS |
| 3656 /* Avoid problems if fname has special chars, eg <Wimp$Scrap> */ | |
| 460 | 3657 ffname, |
| 7 | 3658 #else |
| 594 | 3659 fname_res, |
| 7 | 3660 #endif |
| 3661 (char_u *) | |
| 3662 #if defined(VMS) || defined(RISCOS) | |
| 3663 "_swp", | |
| 3664 #else | |
| 3665 ".swp", | |
| 3666 #endif | |
| 3667 #ifdef SHORT_FNAME /* always 8.3 file name */ | |
| 3668 FALSE | |
| 3669 #else | |
| 3670 /* Prepend a '.' to the swap file name for the current directory. */ | |
| 3671 dir_name[0] == '.' && dir_name[1] == NUL | |
| 3672 #endif | |
| 3673 ); | |
| 3674 if (r == NULL) /* out of memory */ | |
| 3675 return NULL; | |
| 3676 | |
| 3677 s = get_file_in_dir(r, dir_name); | |
| 3678 vim_free(r); | |
| 3679 return s; | |
| 3680 } | |
| 3681 | |
| 3682 /* | |
| 3683 * Get file name to use for swap file or backup file. | |
| 3684 * Use the name of the edited file "fname" and an entry in the 'dir' or 'bdir' | |
| 3685 * option "dname". | |
| 3686 * - If "dname" is ".", return "fname" (swap file in dir of file). | |
| 3687 * - If "dname" starts with "./", insert "dname" in "fname" (swap file | |
| 3688 * relative to dir of file). | |
| 3689 * - Otherwise, prepend "dname" to the tail of "fname" (swap file in specific | |
| 3690 * dir). | |
| 3691 * | |
| 3692 * The return value is an allocated string and can be NULL. | |
| 3693 */ | |
| 3694 char_u * | |
| 3695 get_file_in_dir(fname, dname) | |
| 3696 char_u *fname; | |
| 3697 char_u *dname; /* don't use "dirname", it is a global for Alpha */ | |
| 3698 { | |
| 3699 char_u *t; | |
| 3700 char_u *tail; | |
| 3701 char_u *retval; | |
| 3702 int save_char; | |
| 3703 | |
| 3704 tail = gettail(fname); | |
| 3705 | |
| 3706 if (dname[0] == '.' && dname[1] == NUL) | |
| 3707 retval = vim_strsave(fname); | |
| 3708 else if (dname[0] == '.' && vim_ispathsep(dname[1])) | |
| 3709 { | |
| 3710 if (tail == fname) /* no path before file name */ | |
| 3711 retval = concat_fnames(dname + 2, tail, TRUE); | |
| 3712 else | |
| 3713 { | |
| 3714 save_char = *tail; | |
| 3715 *tail = NUL; | |
| 3716 t = concat_fnames(fname, dname + 2, TRUE); | |
| 3717 *tail = save_char; | |
| 3718 if (t == NULL) /* out of memory */ | |
| 3719 retval = NULL; | |
| 3720 else | |
| 3721 { | |
| 3722 retval = concat_fnames(t, tail, TRUE); | |
| 3723 vim_free(t); | |
| 3724 } | |
| 3725 } | |
| 3726 } | |
| 3727 else | |
| 3728 retval = concat_fnames(dname, tail, TRUE); | |
| 3729 | |
| 3730 return retval; | |
| 3731 } | |
| 3732 | |
| 580 | 3733 static void attention_message __ARGS((buf_T *buf, char_u *fname)); |
| 3734 | |
| 3735 /* | |
| 3736 * Print the ATTENTION message: info about an existing swap file. | |
| 3737 */ | |
| 3738 static void | |
| 3739 attention_message(buf, fname) | |
| 3740 buf_T *buf; /* buffer being edited */ | |
| 3741 char_u *fname; /* swap file name */ | |
| 3742 { | |
| 3743 struct stat st; | |
| 3744 time_t x, sx; | |
| 1001 | 3745 char *p; |
| 580 | 3746 |
| 3747 ++no_wait_return; | |
| 3748 (void)EMSG(_("E325: ATTENTION")); | |
| 3749 MSG_PUTS(_("\nFound a swap file by the name \"")); | |
| 3750 msg_home_replace(fname); | |
| 3751 MSG_PUTS("\"\n"); | |
| 3752 sx = swapfile_info(fname); | |
| 3753 MSG_PUTS(_("While opening file \"")); | |
| 3754 msg_outtrans(buf->b_fname); | |
| 3755 MSG_PUTS("\"\n"); | |
| 3756 if (mch_stat((char *)buf->b_fname, &st) != -1) | |
| 3757 { | |
| 3758 MSG_PUTS(_(" dated: ")); | |
| 3759 x = st.st_mtime; /* Manx C can't do &st.st_mtime */ | |
| 1001 | 3760 p = ctime(&x); /* includes '\n' */ |
| 3761 if (p == NULL) | |
| 3762 MSG_PUTS("(invalid)\n"); | |
| 3763 else | |
| 3764 MSG_PUTS(p); | |
| 580 | 3765 if (sx != 0 && x > sx) |
| 3766 MSG_PUTS(_(" NEWER than swap file!\n")); | |
| 3767 } | |
| 3768 /* Some of these messages are long to allow translation to | |
| 3769 * other languages. */ | |
| 3770 MSG_PUTS(_("\n(1) Another program may be editing the same file.\n If this is the case, be careful not to end up with two\n different instances of the same file when making changes.\n")); | |
| 3771 MSG_PUTS(_(" Quit, or continue with caution.\n")); | |
| 3772 MSG_PUTS(_("\n(2) An edit session for this file crashed.\n")); | |
| 3773 MSG_PUTS(_(" If this is the case, use \":recover\" or \"vim -r ")); | |
| 3774 msg_outtrans(buf->b_fname); | |
| 3775 MSG_PUTS(_("\"\n to recover the changes (see \":help recovery\").\n")); | |
| 3776 MSG_PUTS(_(" If you did this already, delete the swap file \"")); | |
| 3777 msg_outtrans(fname); | |
| 3778 MSG_PUTS(_("\"\n to avoid this message.\n")); | |
| 3779 cmdline_row = msg_row; | |
| 3780 --no_wait_return; | |
| 3781 } | |
| 3782 | |
| 3783 #ifdef FEAT_AUTOCMD | |
| 3784 static int do_swapexists __ARGS((buf_T *buf, char_u *fname)); | |
| 3785 | |
| 3786 /* | |
| 3787 * Trigger the SwapExists autocommands. | |
| 3788 * Returns a value for equivalent to do_dialog() (see below): | |
| 3789 * 0: still need to ask for a choice | |
| 3790 * 1: open read-only | |
| 3791 * 2: edit anyway | |
| 3792 * 3: recover | |
| 3793 * 4: delete it | |
| 3794 * 5: quit | |
| 3795 * 6: abort | |
| 3796 */ | |
| 3797 static int | |
| 3798 do_swapexists(buf, fname) | |
| 3799 buf_T *buf; | |
| 3800 char_u *fname; | |
| 3801 { | |
| 3802 set_vim_var_string(VV_SWAPNAME, fname, -1); | |
| 3803 set_vim_var_string(VV_SWAPCHOICE, NULL, -1); | |
| 3804 | |
| 3805 /* Trigger SwapExists autocommands with <afile> set to the file being | |
| 1856 | 3806 * edited. Disallow changing directory here. */ |
| 3807 ++allbuf_lock; | |
| 580 | 3808 apply_autocmds(EVENT_SWAPEXISTS, buf->b_fname, NULL, FALSE, NULL); |
| 1856 | 3809 --allbuf_lock; |
| 580 | 3810 |
| 3811 set_vim_var_string(VV_SWAPNAME, NULL, -1); | |
| 3812 | |
| 3813 switch (*get_vim_var_str(VV_SWAPCHOICE)) | |
| 3814 { | |
| 3815 case 'o': return 1; | |
| 3816 case 'e': return 2; | |
| 3817 case 'r': return 3; | |
| 3818 case 'd': return 4; | |
| 3819 case 'q': return 5; | |
| 3820 case 'a': return 6; | |
| 3821 } | |
| 3822 | |
| 3823 return 0; | |
| 3824 } | |
| 3825 #endif | |
| 3826 | |
| 7 | 3827 /* |
| 3828 * Find out what name to use for the swap file for buffer 'buf'. | |
| 3829 * | |
| 3830 * Several names are tried to find one that does not exist | |
| 460 | 3831 * Returns the name in allocated memory or NULL. |
| 7 | 3832 * |
| 3833 * Note: If BASENAMELEN is not correct, you will get error messages for | |
| 3834 * not being able to open the swapfile | |
| 1856 | 3835 * Note: May trigger SwapExists autocmd, pointers may change! |
| 7 | 3836 */ |
| 3837 static char_u * | |
| 3838 findswapname(buf, dirp, old_fname) | |
| 3839 buf_T *buf; | |
| 3840 char_u **dirp; /* pointer to list of directories */ | |
| 3841 char_u *old_fname; /* don't give warning for this file name */ | |
| 3842 { | |
| 3843 char_u *fname; | |
| 3844 int n; | |
| 3845 char_u *dir_name; | |
| 3846 #ifdef AMIGA | |
| 3847 BPTR fh; | |
| 3848 #endif | |
| 3849 #ifndef SHORT_FNAME | |
| 3850 int r; | |
| 3851 #endif | |
| 3852 | |
| 3853 #if !defined(SHORT_FNAME) \ | |
| 3854 && ((!defined(UNIX) && !defined(OS2)) || defined(ARCHIE)) | |
| 3855 # define CREATE_DUMMY_FILE | |
| 3856 FILE *dummyfd = NULL; | |
| 3857 | |
| 3858 /* | |
| 3859 * If we start editing a new file, e.g. "test.doc", which resides on an MSDOS | |
| 3860 * compatible filesystem, it is possible that the file "test.doc.swp" which we | |
| 3861 * create will be exactly the same file. To avoid this problem we temporarily | |
| 3862 * create "test.doc". | |
| 3863 * Don't do this when the check below for a 8.3 file name is used. | |
| 3864 */ | |
| 3865 if (!(buf->b_p_sn || buf->b_shortname) && buf->b_fname != NULL | |
| 3866 && mch_getperm(buf->b_fname) < 0) | |
| 3867 dummyfd = mch_fopen((char *)buf->b_fname, "w"); | |
| 3868 #endif | |
| 3869 | |
| 3870 /* | |
| 3871 * Isolate a directory name from *dirp and put it in dir_name. | |
| 3872 * First allocate some memory to put the directory name in. | |
| 3873 */ | |
| 3874 dir_name = alloc((unsigned)STRLEN(*dirp) + 1); | |
| 3875 if (dir_name != NULL) | |
| 3876 (void)copy_option_part(dirp, dir_name, 31000, ","); | |
| 3877 | |
| 3878 /* | |
| 3879 * we try different names until we find one that does not exist yet | |
| 3880 */ | |
| 3881 if (dir_name == NULL) /* out of memory */ | |
| 3882 fname = NULL; | |
| 3883 else | |
| 460 | 3884 fname = makeswapname(buf->b_fname, buf->b_ffname, buf, dir_name); |
| 7 | 3885 |
| 3886 for (;;) | |
| 3887 { | |
| 3888 if (fname == NULL) /* must be out of memory */ | |
| 3889 break; | |
| 3890 if ((n = (int)STRLEN(fname)) == 0) /* safety check */ | |
| 3891 { | |
| 3892 vim_free(fname); | |
| 3893 fname = NULL; | |
| 3894 break; | |
| 3895 } | |
| 3896 #if (defined(UNIX) || defined(OS2)) && !defined(ARCHIE) && !defined(SHORT_FNAME) | |
| 3897 /* | |
| 3898 * Some systems have a MS-DOS compatible filesystem that use 8.3 character | |
| 3899 * file names. If this is the first try and the swap file name does not fit in | |
| 3900 * 8.3, detect if this is the case, set shortname and try again. | |
| 3901 */ | |
| 3902 if (fname[n - 2] == 'w' && fname[n - 1] == 'p' | |
| 3903 && !(buf->b_p_sn || buf->b_shortname)) | |
| 3904 { | |
| 3905 char_u *tail; | |
| 3906 char_u *fname2; | |
| 3907 struct stat s1, s2; | |
| 3908 int f1, f2; | |
| 3909 int created1 = FALSE, created2 = FALSE; | |
| 3910 int same = FALSE; | |
| 3911 | |
| 3912 /* | |
| 3913 * Check if swapfile name does not fit in 8.3: | |
| 3914 * It either contains two dots, is longer than 8 chars, or starts | |
| 3915 * with a dot. | |
| 3916 */ | |
| 3917 tail = gettail(buf->b_fname); | |
| 3918 if ( vim_strchr(tail, '.') != NULL | |
| 3919 || STRLEN(tail) > (size_t)8 | |
| 3920 || *gettail(fname) == '.') | |
| 3921 { | |
| 3922 fname2 = alloc(n + 2); | |
| 3923 if (fname2 != NULL) | |
| 3924 { | |
| 3925 STRCPY(fname2, fname); | |
| 3926 /* if fname == "xx.xx.swp", fname2 = "xx.xx.swx" | |
| 3927 * if fname == ".xx.swp", fname2 = ".xx.swpx" | |
| 3928 * if fname == "123456789.swp", fname2 = "12345678x.swp" | |
| 3929 */ | |
| 3930 if (vim_strchr(tail, '.') != NULL) | |
| 3931 fname2[n - 1] = 'x'; | |
| 3932 else if (*gettail(fname) == '.') | |
| 3933 { | |
| 3934 fname2[n] = 'x'; | |
| 3935 fname2[n + 1] = NUL; | |
| 3936 } | |
| 3937 else | |
| 3938 fname2[n - 5] += 1; | |
| 3939 /* | |
| 3940 * may need to create the files to be able to use mch_stat() | |
| 3941 */ | |
| 3942 f1 = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
| 3943 if (f1 < 0) | |
| 3944 { | |
| 3945 f1 = mch_open_rw((char *)fname, | |
| 3946 O_RDWR|O_CREAT|O_EXCL|O_EXTRA); | |
| 3947 #if defined(OS2) | |
| 3948 if (f1 < 0 && errno == ENOENT) | |
| 3949 same = TRUE; | |
| 3950 #endif | |
| 3951 created1 = TRUE; | |
| 3952 } | |
| 3953 if (f1 >= 0) | |
| 3954 { | |
| 3955 f2 = mch_open((char *)fname2, O_RDONLY | O_EXTRA, 0); | |
| 3956 if (f2 < 0) | |
| 3957 { | |
| 3958 f2 = mch_open_rw((char *)fname2, | |
| 3959 O_RDWR|O_CREAT|O_EXCL|O_EXTRA); | |
| 3960 created2 = TRUE; | |
| 3961 } | |
| 3962 if (f2 >= 0) | |
| 3963 { | |
| 3964 /* | |
| 3965 * Both files exist now. If mch_stat() returns the | |
| 3966 * same device and inode they are the same file. | |
| 3967 */ | |
| 3968 if (mch_fstat(f1, &s1) != -1 | |
| 3969 && mch_fstat(f2, &s2) != -1 | |
| 3970 && s1.st_dev == s2.st_dev | |
| 3971 && s1.st_ino == s2.st_ino) | |
| 3972 same = TRUE; | |
| 3973 close(f2); | |
| 3974 if (created2) | |
| 3975 mch_remove(fname2); | |
| 3976 } | |
| 3977 close(f1); | |
| 3978 if (created1) | |
| 3979 mch_remove(fname); | |
| 3980 } | |
| 3981 vim_free(fname2); | |
| 3982 if (same) | |
| 3983 { | |
| 3984 buf->b_shortname = TRUE; | |
| 3985 vim_free(fname); | |
| 460 | 3986 fname = makeswapname(buf->b_fname, buf->b_ffname, |
| 3987 buf, dir_name); | |
| 7 | 3988 continue; /* try again with b_shortname set */ |
| 3989 } | |
| 3990 } | |
| 3991 } | |
| 3992 } | |
| 3993 #endif | |
| 3994 /* | |
| 3995 * check if the swapfile already exists | |
| 3996 */ | |
| 3997 if (mch_getperm(fname) < 0) /* it does not exist */ | |
| 3998 { | |
| 3999 #ifdef HAVE_LSTAT | |
| 4000 struct stat sb; | |
| 4001 | |
| 4002 /* | |
| 4003 * Extra security check: When a swap file is a symbolic link, this | |
| 4004 * is most likely a symlink attack. | |
| 4005 */ | |
| 4006 if (mch_lstat((char *)fname, &sb) < 0) | |
| 4007 #else | |
| 4008 # ifdef AMIGA | |
| 4009 fh = Open((UBYTE *)fname, (long)MODE_NEWFILE); | |
| 4010 /* | |
| 4011 * on the Amiga mch_getperm() will return -1 when the file exists | |
| 4012 * but is being used by another program. This happens if you edit | |
| 4013 * a file twice. | |
| 4014 */ | |
| 4015 if (fh != (BPTR)NULL) /* can open file, OK */ | |
| 4016 { | |
| 4017 Close(fh); | |
| 4018 mch_remove(fname); | |
| 4019 break; | |
| 4020 } | |
| 4021 if (IoErr() != ERROR_OBJECT_IN_USE | |
| 4022 && IoErr() != ERROR_OBJECT_EXISTS) | |
| 4023 # endif | |
| 4024 #endif | |
| 4025 break; | |
| 4026 } | |
| 4027 | |
| 4028 /* | |
| 4029 * A file name equal to old_fname is OK to use. | |
| 4030 */ | |
| 4031 if (old_fname != NULL && fnamecmp(fname, old_fname) == 0) | |
| 4032 break; | |
| 4033 | |
| 4034 /* | |
| 4035 * get here when file already exists | |
| 4036 */ | |
| 4037 if (fname[n - 2] == 'w' && fname[n - 1] == 'p') /* first try */ | |
| 4038 { | |
| 4039 #ifndef SHORT_FNAME | |
| 4040 /* | |
| 4041 * on MS-DOS compatible filesystems (e.g. messydos) file.doc.swp | |
| 4042 * and file.doc are the same file. To guess if this problem is | |
| 4043 * present try if file.doc.swx exists. If it does, we set | |
| 4044 * buf->b_shortname and try file_doc.swp (dots replaced by | |
| 4045 * underscores for this file), and try again. If it doesn't we | |
| 4046 * assume that "file.doc.swp" already exists. | |
| 4047 */ | |
| 4048 if (!(buf->b_p_sn || buf->b_shortname)) /* not tried yet */ | |
| 4049 { | |
| 4050 fname[n - 1] = 'x'; | |
| 4051 r = mch_getperm(fname); /* try "file.swx" */ | |
| 4052 fname[n - 1] = 'p'; | |
| 4053 if (r >= 0) /* "file.swx" seems to exist */ | |
| 4054 { | |
| 4055 buf->b_shortname = TRUE; | |
| 4056 vim_free(fname); | |
| 460 | 4057 fname = makeswapname(buf->b_fname, buf->b_ffname, |
| 4058 buf, dir_name); | |
| 7 | 4059 continue; /* try again with '.' replaced with '_' */ |
| 4060 } | |
| 4061 } | |
| 4062 #endif | |
| 4063 /* | |
| 4064 * If we get here the ".swp" file really exists. | |
| 4065 * Give an error message, unless recovering, no file name, we are | |
| 4066 * viewing a help file or when the path of the file is different | |
| 4067 * (happens when all .swp files are in one directory). | |
| 4068 */ | |
| 43 | 4069 if (!recoverymode && buf->b_fname != NULL |
| 4070 && !buf->b_help && !(buf->b_flags & BF_DUMMY)) | |
| 7 | 4071 { |
| 4072 int fd; | |
| 4073 struct block0 b0; | |
| 4074 int differ = FALSE; | |
| 4075 | |
| 4076 /* | |
| 4077 * Try to read block 0 from the swap file to get the original | |
| 4078 * file name (and inode number). | |
| 4079 */ | |
| 4080 fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
| 4081 if (fd >= 0) | |
| 4082 { | |
| 4083 if (read(fd, (char *)&b0, sizeof(b0)) == sizeof(b0)) | |
| 4084 { | |
| 4085 /* | |
| 39 | 4086 * If the swapfile has the same directory as the |
| 4087 * buffer don't compare the directory names, they can | |
| 4088 * have a different mountpoint. | |
| 7 | 4089 */ |
| 39 | 4090 if (b0.b0_flags & B0_SAME_DIR) |
| 4091 { | |
| 4092 if (fnamecmp(gettail(buf->b_ffname), | |
| 4093 gettail(b0.b0_fname)) != 0 | |
| 4094 || !same_directory(fname, buf->b_ffname)) | |
| 594 | 4095 { |
| 4096 #ifdef CHECK_INODE | |
| 4097 /* Symlinks may point to the same file even | |
| 4098 * when the name differs, need to check the | |
| 4099 * inode too. */ | |
| 4100 expand_env(b0.b0_fname, NameBuff, MAXPATHL); | |
| 4101 if (fnamecmp_ino(buf->b_ffname, NameBuff, | |
| 4102 char_to_long(b0.b0_ino))) | |
| 4103 #endif | |
| 4104 differ = TRUE; | |
| 4105 } | |
| 39 | 4106 } |
| 4107 else | |
| 4108 { | |
| 4109 /* | |
| 4110 * The name in the swap file may be | |
| 4111 * "~user/path/file". Expand it first. | |
| 4112 */ | |
| 4113 expand_env(b0.b0_fname, NameBuff, MAXPATHL); | |
| 7 | 4114 #ifdef CHECK_INODE |
| 39 | 4115 if (fnamecmp_ino(buf->b_ffname, NameBuff, |
| 594 | 4116 char_to_long(b0.b0_ino))) |
| 39 | 4117 differ = TRUE; |
| 7 | 4118 #else |
| 39 | 4119 if (fnamecmp(NameBuff, buf->b_ffname) != 0) |
| 4120 differ = TRUE; | |
| 7 | 4121 #endif |
| 39 | 4122 } |
| 7 | 4123 } |
| 4124 close(fd); | |
| 4125 } | |
| 4126 #ifdef RISCOS | |
| 4127 else | |
| 4128 /* Can't open swap file, though it does exist. | |
| 4129 * Assume that the user is editing two files with | |
| 4130 * the same name in different directories. No error. | |
| 4131 */ | |
| 4132 differ = TRUE; | |
| 4133 #endif | |
| 4134 | |
| 4135 /* give the ATTENTION message when there is an old swap file | |
| 4136 * for the current file, and the buffer was not recovered. */ | |
| 4137 if (differ == FALSE && !(curbuf->b_flags & BF_RECOVERED) | |
| 4138 && vim_strchr(p_shm, SHM_ATTENTION) == NULL) | |
| 4139 { | |
| 580 | 4140 #if defined(HAS_SWAP_EXISTS_ACTION) |
| 4141 int choice = 0; | |
| 4142 #endif | |
| 7 | 4143 #ifdef CREATE_DUMMY_FILE |
| 4144 int did_use_dummy = FALSE; | |
| 4145 | |
| 4146 /* Avoid getting a warning for the file being created | |
| 4147 * outside of Vim, it was created at the start of this | |
| 4148 * function. Delete the file now, because Vim might exit | |
| 4149 * here if the window is closed. */ | |
| 4150 if (dummyfd != NULL) | |
| 4151 { | |
| 4152 fclose(dummyfd); | |
| 4153 dummyfd = NULL; | |
| 4154 mch_remove(buf->b_fname); | |
| 4155 did_use_dummy = TRUE; | |
| 4156 } | |
| 4157 #endif | |
| 4158 | |
| 4159 #if (defined(UNIX) || defined(__EMX__) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)) | |
| 4160 process_still_running = FALSE; | |
| 4161 #endif | |
| 580 | 4162 #ifdef FEAT_AUTOCMD |
| 4163 /* | |
| 4164 * If there is an SwapExists autocommand and we can handle | |
| 4165 * the response, trigger it. It may return 0 to ask the | |
| 4166 * user anyway. | |
| 4167 */ | |
| 4168 if (swap_exists_action != SEA_NONE | |
| 4169 && has_autocmd(EVENT_SWAPEXISTS, buf->b_fname, buf)) | |
| 4170 choice = do_swapexists(buf, fname); | |
| 4171 | |
| 4172 if (choice == 0) | |
| 4173 #endif | |
| 7 | 4174 { |
| 580 | 4175 #ifdef FEAT_GUI |
| 4176 /* If we are supposed to start the GUI but it wasn't | |
| 4177 * completely started yet, start it now. This makes | |
| 4178 * the messages displayed in the Vim window when | |
| 4179 * loading a session from the .gvimrc file. */ | |
| 4180 if (gui.starting && !gui.in_use) | |
| 4181 gui_start(); | |
| 4182 #endif | |
| 4183 /* Show info about the existing swap file. */ | |
| 4184 attention_message(buf, fname); | |
| 4185 | |
| 4186 /* We don't want a 'q' typed at the more-prompt | |
| 4187 * interrupt loading a file. */ | |
| 4188 got_int = FALSE; | |
| 7 | 4189 } |
| 4190 | |
| 4191 #if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) | |
| 580 | 4192 if (swap_exists_action != SEA_NONE && choice == 0) |
| 7 | 4193 { |
| 4194 char_u *name; | |
| 4195 | |
| 4196 name = alloc((unsigned)(STRLEN(fname) | |
| 4197 + STRLEN(_("Swap file \"")) | |
| 4198 + STRLEN(_("\" already exists!")) + 5)); | |
| 4199 if (name != NULL) | |
| 4200 { | |
| 4201 STRCPY(name, _("Swap file \"")); | |
| 4202 home_replace(NULL, fname, name + STRLEN(name), | |
| 4203 1000, TRUE); | |
| 4204 STRCAT(name, _("\" already exists!")); | |
| 4205 } | |
| 580 | 4206 choice = do_dialog(VIM_WARNING, |
| 7 | 4207 (char_u *)_("VIM - ATTENTION"), |
| 4208 name == NULL | |
| 4209 ? (char_u *)_("Swap file already exists!") | |
| 4210 : name, | |
| 4211 # if defined(UNIX) || defined(__EMX__) || defined(VMS) | |
| 4212 process_still_running | |
| 4213 ? (char_u *)_("&Open Read-Only\n&Edit anyway\n&Recover\n&Quit\n&Abort") : | |
| 4214 # endif | |
| 580 | 4215 (char_u *)_("&Open Read-Only\n&Edit anyway\n&Recover\n&Delete it\n&Quit\n&Abort"), 1, NULL); |
| 4216 | |
| 4217 # if defined(UNIX) || defined(__EMX__) || defined(VMS) | |
| 4218 if (process_still_running && choice >= 4) | |
| 4219 choice++; /* Skip missing "Delete it" button */ | |
| 4220 # endif | |
| 4221 vim_free(name); | |
| 4222 | |
| 4223 /* pretend screen didn't scroll, need redraw anyway */ | |
| 4224 msg_scrolled = 0; | |
| 4225 redraw_all_later(NOT_VALID); | |
| 4226 } | |
| 4227 #endif | |
| 4228 | |
| 4229 #if defined(HAS_SWAP_EXISTS_ACTION) | |
| 4230 if (choice > 0) | |
| 4231 { | |
| 4232 switch (choice) | |
| 7 | 4233 { |
| 4234 case 1: | |
| 4235 buf->b_p_ro = TRUE; | |
| 4236 break; | |
| 4237 case 2: | |
| 4238 break; | |
| 4239 case 3: | |
| 4240 swap_exists_action = SEA_RECOVER; | |
| 4241 break; | |
| 4242 case 4: | |
| 580 | 4243 mch_remove(fname); |
| 4244 break; | |
| 4245 case 5: | |
| 7 | 4246 swap_exists_action = SEA_QUIT; |
| 4247 break; | |
| 580 | 4248 case 6: |
| 7 | 4249 swap_exists_action = SEA_QUIT; |
| 4250 got_int = TRUE; | |
| 4251 break; | |
| 4252 } | |
| 4253 | |
| 4254 /* If the file was deleted this fname can be used. */ | |
| 4255 if (mch_getperm(fname) < 0) | |
| 4256 break; | |
| 4257 } | |
| 4258 else | |
| 4259 #endif | |
| 4260 { | |
| 4261 MSG_PUTS("\n"); | |
| 625 | 4262 if (msg_silent == 0) |
| 4263 /* call wait_return() later */ | |
| 4264 need_wait_return = TRUE; | |
| 7 | 4265 } |
| 4266 | |
| 4267 #ifdef CREATE_DUMMY_FILE | |
| 4268 /* Going to try another name, need the dummy file again. */ | |
| 4269 if (did_use_dummy) | |
| 4270 dummyfd = mch_fopen((char *)buf->b_fname, "w"); | |
| 4271 #endif | |
| 4272 } | |
| 4273 } | |
| 4274 } | |
| 4275 | |
| 4276 /* | |
| 4277 * Change the ".swp" extension to find another file that can be used. | |
| 4278 * First decrement the last char: ".swo", ".swn", etc. | |
| 4279 * If that still isn't enough decrement the last but one char: ".svz" | |
| 9 | 4280 * Can happen when editing many "No Name" buffers. |
| 7 | 4281 */ |
| 4282 if (fname[n - 1] == 'a') /* ".s?a" */ | |
| 4283 { | |
| 4284 if (fname[n - 2] == 'a') /* ".saa": tried enough, give up */ | |
| 4285 { | |
| 4286 EMSG(_("E326: Too many swap files found")); | |
| 4287 vim_free(fname); | |
| 4288 fname = NULL; | |
| 4289 break; | |
| 4290 } | |
| 4291 --fname[n - 2]; /* ".svz", ".suz", etc. */ | |
| 4292 fname[n - 1] = 'z' + 1; | |
| 4293 } | |
| 4294 --fname[n - 1]; /* ".swo", ".swn", etc. */ | |
| 4295 } | |
| 4296 | |
| 4297 vim_free(dir_name); | |
| 4298 #ifdef CREATE_DUMMY_FILE | |
| 4299 if (dummyfd != NULL) /* file has been created temporarily */ | |
| 4300 { | |
| 4301 fclose(dummyfd); | |
| 4302 mch_remove(buf->b_fname); | |
| 4303 } | |
| 4304 #endif | |
| 4305 return fname; | |
| 4306 } | |
| 4307 | |
| 4308 static int | |
| 4309 b0_magic_wrong(b0p) | |
| 4310 ZERO_BL *b0p; | |
| 4311 { | |
| 4312 return (b0p->b0_magic_long != (long)B0_MAGIC_LONG | |
| 4313 || b0p->b0_magic_int != (int)B0_MAGIC_INT | |
| 4314 || b0p->b0_magic_short != (short)B0_MAGIC_SHORT | |
| 4315 || b0p->b0_magic_char != B0_MAGIC_CHAR); | |
| 4316 } | |
| 4317 | |
| 4318 #ifdef CHECK_INODE | |
| 4319 /* | |
| 4320 * Compare current file name with file name from swap file. | |
| 4321 * Try to use inode numbers when possible. | |
| 4322 * Return non-zero when files are different. | |
| 4323 * | |
| 4324 * When comparing file names a few things have to be taken into consideration: | |
| 4325 * - When working over a network the full path of a file depends on the host. | |
| 4326 * We check the inode number if possible. It is not 100% reliable though, | |
| 4327 * because the device number cannot be used over a network. | |
| 4328 * - When a file does not exist yet (editing a new file) there is no inode | |
| 4329 * number. | |
| 4330 * - The file name in a swap file may not be valid on the current host. The | |
| 4331 * "~user" form is used whenever possible to avoid this. | |
| 4332 * | |
| 4333 * This is getting complicated, let's make a table: | |
| 4334 * | |
| 4335 * ino_c ino_s fname_c fname_s differ = | |
| 4336 * | |
| 4337 * both files exist -> compare inode numbers: | |
| 4338 * != 0 != 0 X X ino_c != ino_s | |
| 4339 * | |
| 4340 * inode number(s) unknown, file names available -> compare file names | |
| 4341 * == 0 X OK OK fname_c != fname_s | |
| 4342 * X == 0 OK OK fname_c != fname_s | |
| 4343 * | |
| 4344 * current file doesn't exist, file for swap file exist, file name(s) not | |
| 4345 * available -> probably different | |
| 4346 * == 0 != 0 FAIL X TRUE | |
| 4347 * == 0 != 0 X FAIL TRUE | |
| 4348 * | |
| 4349 * current file exists, inode for swap unknown, file name(s) not | |
| 4350 * available -> probably different | |
| 4351 * != 0 == 0 FAIL X TRUE | |
| 4352 * != 0 == 0 X FAIL TRUE | |
| 4353 * | |
| 4354 * current file doesn't exist, inode for swap unknown, one file name not | |
| 4355 * available -> probably different | |
| 4356 * == 0 == 0 FAIL OK TRUE | |
| 4357 * == 0 == 0 OK FAIL TRUE | |
| 4358 * | |
| 4359 * current file doesn't exist, inode for swap unknown, both file names not | |
| 4360 * available -> probably same file | |
| 4361 * == 0 == 0 FAIL FAIL FALSE | |
| 4362 * | |
| 4363 * Note that when the ino_t is 64 bits, only the last 32 will be used. This | |
| 4364 * can't be changed without making the block 0 incompatible with 32 bit | |
| 4365 * versions. | |
| 4366 */ | |
| 4367 | |
| 4368 static int | |
| 4369 fnamecmp_ino(fname_c, fname_s, ino_block0) | |
| 4370 char_u *fname_c; /* current file name */ | |
| 4371 char_u *fname_s; /* file name from swap file */ | |
| 4372 long ino_block0; | |
| 4373 { | |
| 4374 struct stat st; | |
| 4375 ino_t ino_c = 0; /* ino of current file */ | |
| 4376 ino_t ino_s; /* ino of file from swap file */ | |
| 4377 char_u buf_c[MAXPATHL]; /* full path of fname_c */ | |
| 4378 char_u buf_s[MAXPATHL]; /* full path of fname_s */ | |
| 4379 int retval_c; /* flag: buf_c valid */ | |
| 4380 int retval_s; /* flag: buf_s valid */ | |
| 4381 | |
| 4382 if (mch_stat((char *)fname_c, &st) == 0) | |
| 4383 ino_c = (ino_t)st.st_ino; | |
| 4384 | |
| 4385 /* | |
| 4386 * First we try to get the inode from the file name, because the inode in | |
| 4387 * the swap file may be outdated. If that fails (e.g. this path is not | |
| 4388 * valid on this machine), use the inode from block 0. | |
| 4389 */ | |
| 4390 if (mch_stat((char *)fname_s, &st) == 0) | |
| 4391 ino_s = (ino_t)st.st_ino; | |
| 4392 else | |
| 4393 ino_s = (ino_t)ino_block0; | |
| 4394 | |
| 4395 if (ino_c && ino_s) | |
| 4396 return (ino_c != ino_s); | |
| 4397 | |
| 4398 /* | |
| 4399 * One of the inode numbers is unknown, try a forced vim_FullName() and | |
| 4400 * compare the file names. | |
| 4401 */ | |
| 4402 retval_c = vim_FullName(fname_c, buf_c, MAXPATHL, TRUE); | |
| 4403 retval_s = vim_FullName(fname_s, buf_s, MAXPATHL, TRUE); | |
| 4404 if (retval_c == OK && retval_s == OK) | |
| 4405 return (STRCMP(buf_c, buf_s) != 0); | |
| 4406 | |
| 4407 /* | |
| 4408 * Can't compare inodes or file names, guess that the files are different, | |
| 4409 * unless both appear not to exist at all. | |
| 4410 */ | |
| 4411 if (ino_s == 0 && ino_c == 0 && retval_c == FAIL && retval_s == FAIL) | |
| 4412 return FALSE; | |
| 4413 return TRUE; | |
| 4414 } | |
| 4415 #endif /* CHECK_INODE */ | |
| 4416 | |
| 4417 /* | |
| 4418 * Move a long integer into a four byte character array. | |
| 4419 * Used for machine independency in block zero. | |
| 4420 */ | |
| 4421 static void | |
| 4422 long_to_char(n, s) | |
| 4423 long n; | |
| 4424 char_u *s; | |
| 4425 { | |
| 4426 s[0] = (char_u)(n & 0xff); | |
| 4427 n = (unsigned)n >> 8; | |
| 4428 s[1] = (char_u)(n & 0xff); | |
| 4429 n = (unsigned)n >> 8; | |
| 4430 s[2] = (char_u)(n & 0xff); | |
| 4431 n = (unsigned)n >> 8; | |
| 4432 s[3] = (char_u)(n & 0xff); | |
| 4433 } | |
| 4434 | |
| 4435 static long | |
| 4436 char_to_long(s) | |
| 4437 char_u *s; | |
| 4438 { | |
| 4439 long retval; | |
| 4440 | |
| 4441 retval = s[3]; | |
| 4442 retval <<= 8; | |
| 4443 retval |= s[2]; | |
| 4444 retval <<= 8; | |
| 4445 retval |= s[1]; | |
| 4446 retval <<= 8; | |
| 4447 retval |= s[0]; | |
| 4448 | |
| 4449 return retval; | |
| 4450 } | |
| 4451 | |
| 39 | 4452 /* |
| 4453 * Set the flags in the first block of the swap file: | |
| 4454 * - file is modified or not: buf->b_changed | |
| 4455 * - 'fileformat' | |
| 4456 * - 'fileencoding' | |
| 4457 */ | |
| 7 | 4458 void |
| 39 | 4459 ml_setflags(buf) |
| 7 | 4460 buf_T *buf; |
| 4461 { | |
| 4462 bhdr_T *hp; | |
| 4463 ZERO_BL *b0p; | |
| 4464 | |
| 4465 if (!buf->b_ml.ml_mfp) | |
| 4466 return; | |
| 4467 for (hp = buf->b_ml.ml_mfp->mf_used_last; hp != NULL; hp = hp->bh_prev) | |
| 4468 { | |
| 4469 if (hp->bh_bnum == 0) | |
| 4470 { | |
| 4471 b0p = (ZERO_BL *)(hp->bh_data); | |
| 39 | 4472 b0p->b0_dirty = buf->b_changed ? B0_DIRTY : 0; |
| 4473 b0p->b0_flags = (b0p->b0_flags & ~B0_FF_MASK) | |
| 4474 | (get_fileformat(buf) + 1); | |
| 4475 #ifdef FEAT_MBYTE | |
| 4476 add_b0_fenc(b0p, buf); | |
| 4477 #endif | |
| 7 | 4478 hp->bh_flags |= BH_DIRTY; |
| 4479 mf_sync(buf->b_ml.ml_mfp, MFS_ZERO); | |
| 4480 break; | |
| 4481 } | |
| 4482 } | |
| 4483 } | |
| 4484 | |
| 4485 #if defined(FEAT_BYTEOFF) || defined(PROTO) | |
| 4486 | |
| 4487 #define MLCS_MAXL 800 /* max no of lines in chunk */ | |
| 4488 #define MLCS_MINL 400 /* should be half of MLCS_MAXL */ | |
| 4489 | |
| 4490 /* | |
| 4491 * Keep information for finding byte offset of a line, updtytpe may be one of: | |
| 4492 * ML_CHNK_ADDLINE: Add len to parent chunk, possibly splitting it | |
| 4493 * Careful: ML_CHNK_ADDLINE may cause ml_find_line() to be called. | |
| 4494 * ML_CHNK_DELLINE: Subtract len from parent chunk, possibly deleting it | |
| 4495 * ML_CHNK_UPDLINE: Add len to parent chunk, as a signed entity. | |
| 4496 */ | |
| 4497 static void | |
| 4498 ml_updatechunk(buf, line, len, updtype) | |
| 4499 buf_T *buf; | |
| 4500 linenr_T line; | |
| 4501 long len; | |
| 4502 int updtype; | |
| 4503 { | |
| 4504 static buf_T *ml_upd_lastbuf = NULL; | |
| 4505 static linenr_T ml_upd_lastline; | |
| 4506 static linenr_T ml_upd_lastcurline; | |
| 4507 static int ml_upd_lastcurix; | |
| 4508 | |
| 4509 linenr_T curline = ml_upd_lastcurline; | |
| 4510 int curix = ml_upd_lastcurix; | |
| 4511 long size; | |
| 4512 chunksize_T *curchnk; | |
| 4513 int rest; | |
| 4514 bhdr_T *hp; | |
| 4515 DATA_BL *dp; | |
| 4516 | |
| 4517 if (buf->b_ml.ml_usedchunks == -1 || len == 0) | |
| 4518 return; | |
| 4519 if (buf->b_ml.ml_chunksize == NULL) | |
| 4520 { | |
| 4521 buf->b_ml.ml_chunksize = (chunksize_T *) | |
| 4522 alloc((unsigned)sizeof(chunksize_T) * 100); | |
| 4523 if (buf->b_ml.ml_chunksize == NULL) | |
| 4524 { | |
| 4525 buf->b_ml.ml_usedchunks = -1; | |
| 4526 return; | |
| 4527 } | |
| 4528 buf->b_ml.ml_numchunks = 100; | |
| 4529 buf->b_ml.ml_usedchunks = 1; | |
| 4530 buf->b_ml.ml_chunksize[0].mlcs_numlines = 1; | |
| 4531 buf->b_ml.ml_chunksize[0].mlcs_totalsize = 1; | |
| 4532 } | |
| 4533 | |
| 4534 if (updtype == ML_CHNK_UPDLINE && buf->b_ml.ml_line_count == 1) | |
| 4535 { | |
| 4536 /* | |
| 4537 * First line in empty buffer from ml_flush_line() -- reset | |
| 4538 */ | |
| 4539 buf->b_ml.ml_usedchunks = 1; | |
| 4540 buf->b_ml.ml_chunksize[0].mlcs_numlines = 1; | |
| 4541 buf->b_ml.ml_chunksize[0].mlcs_totalsize = | |
| 4542 (long)STRLEN(buf->b_ml.ml_line_ptr) + 1; | |
| 4543 return; | |
| 4544 } | |
| 4545 | |
| 4546 /* | |
| 4547 * Find chunk that our line belongs to, curline will be at start of the | |
| 4548 * chunk. | |
| 4549 */ | |
| 4550 if (buf != ml_upd_lastbuf || line != ml_upd_lastline + 1 | |
| 4551 || updtype != ML_CHNK_ADDLINE) | |
| 4552 { | |
| 4553 for (curline = 1, curix = 0; | |
| 4554 curix < buf->b_ml.ml_usedchunks - 1 | |
| 4555 && line >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 4556 curix++) | |
| 4557 { | |
| 4558 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 4559 } | |
| 4560 } | |
| 4561 else if (line >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines | |
| 4562 && curix < buf->b_ml.ml_usedchunks - 1) | |
| 4563 { | |
| 4564 /* Adjust cached curix & curline */ | |
| 4565 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 4566 curix++; | |
| 4567 } | |
| 4568 curchnk = buf->b_ml.ml_chunksize + curix; | |
| 4569 | |
| 4570 if (updtype == ML_CHNK_DELLINE) | |
| 1030 | 4571 len = -len; |
| 7 | 4572 curchnk->mlcs_totalsize += len; |
| 4573 if (updtype == ML_CHNK_ADDLINE) | |
| 4574 { | |
| 4575 curchnk->mlcs_numlines++; | |
| 4576 | |
| 4577 /* May resize here so we don't have to do it in both cases below */ | |
| 4578 if (buf->b_ml.ml_usedchunks + 1 >= buf->b_ml.ml_numchunks) | |
| 4579 { | |
| 4580 buf->b_ml.ml_numchunks = buf->b_ml.ml_numchunks * 3 / 2; | |
| 4581 buf->b_ml.ml_chunksize = (chunksize_T *) | |
| 4582 vim_realloc(buf->b_ml.ml_chunksize, | |
| 4583 sizeof(chunksize_T) * buf->b_ml.ml_numchunks); | |
| 4584 if (buf->b_ml.ml_chunksize == NULL) | |
| 4585 { | |
| 4586 /* Hmmmm, Give up on offset for this buffer */ | |
| 4587 buf->b_ml.ml_usedchunks = -1; | |
| 4588 return; | |
| 4589 } | |
| 4590 } | |
| 4591 | |
| 4592 if (buf->b_ml.ml_chunksize[curix].mlcs_numlines >= MLCS_MAXL) | |
| 4593 { | |
| 4594 int count; /* number of entries in block */ | |
| 4595 int idx; | |
| 4596 int text_end; | |
| 4597 int linecnt; | |
| 4598 | |
| 4599 mch_memmove(buf->b_ml.ml_chunksize + curix + 1, | |
| 4600 buf->b_ml.ml_chunksize + curix, | |
| 4601 (buf->b_ml.ml_usedchunks - curix) * | |
| 4602 sizeof(chunksize_T)); | |
| 1855 | 4603 /* Compute length of first half of lines in the split chunk */ |
| 7 | 4604 size = 0; |
| 4605 linecnt = 0; | |
| 4606 while (curline < buf->b_ml.ml_line_count | |
| 4607 && linecnt < MLCS_MINL) | |
| 4608 { | |
| 4609 if ((hp = ml_find_line(buf, curline, ML_FIND)) == NULL) | |
| 4610 { | |
| 4611 buf->b_ml.ml_usedchunks = -1; | |
| 4612 return; | |
| 4613 } | |
| 4614 dp = (DATA_BL *)(hp->bh_data); | |
| 4615 count = (long)(buf->b_ml.ml_locked_high) - | |
| 4616 (long)(buf->b_ml.ml_locked_low) + 1; | |
| 4617 idx = curline - buf->b_ml.ml_locked_low; | |
| 4618 curline = buf->b_ml.ml_locked_high + 1; | |
| 4619 if (idx == 0)/* first line in block, text at the end */ | |
| 4620 text_end = dp->db_txt_end; | |
| 4621 else | |
| 4622 text_end = ((dp->db_index[idx - 1]) & DB_INDEX_MASK); | |
| 4623 /* Compute index of last line to use in this MEMLINE */ | |
| 4624 rest = count - idx; | |
| 4625 if (linecnt + rest > MLCS_MINL) | |
| 4626 { | |
| 4627 idx += MLCS_MINL - linecnt - 1; | |
| 4628 linecnt = MLCS_MINL; | |
| 4629 } | |
| 4630 else | |
| 4631 { | |
| 4632 idx = count - 1; | |
| 4633 linecnt += rest; | |
| 4634 } | |
| 4635 size += text_end - ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 4636 } | |
| 4637 buf->b_ml.ml_chunksize[curix].mlcs_numlines = linecnt; | |
| 4638 buf->b_ml.ml_chunksize[curix + 1].mlcs_numlines -= linecnt; | |
| 4639 buf->b_ml.ml_chunksize[curix].mlcs_totalsize = size; | |
| 4640 buf->b_ml.ml_chunksize[curix + 1].mlcs_totalsize -= size; | |
| 4641 buf->b_ml.ml_usedchunks++; | |
| 4642 ml_upd_lastbuf = NULL; /* Force recalc of curix & curline */ | |
| 4643 return; | |
| 4644 } | |
| 4645 else if (buf->b_ml.ml_chunksize[curix].mlcs_numlines >= MLCS_MINL | |
| 4646 && curix == buf->b_ml.ml_usedchunks - 1 | |
| 4647 && buf->b_ml.ml_line_count - line <= 1) | |
| 4648 { | |
| 4649 /* | |
| 4650 * We are in the last chunk and it is cheap to crate a new one | |
| 4651 * after this. Do it now to avoid the loop above later on | |
| 4652 */ | |
| 4653 curchnk = buf->b_ml.ml_chunksize + curix + 1; | |
| 4654 buf->b_ml.ml_usedchunks++; | |
| 4655 if (line == buf->b_ml.ml_line_count) | |
| 4656 { | |
| 4657 curchnk->mlcs_numlines = 0; | |
| 4658 curchnk->mlcs_totalsize = 0; | |
| 4659 } | |
| 4660 else | |
| 4661 { | |
| 4662 /* | |
| 4663 * Line is just prior to last, move count for last | |
| 4664 * This is the common case when loading a new file | |
| 4665 */ | |
| 4666 hp = ml_find_line(buf, buf->b_ml.ml_line_count, ML_FIND); | |
| 4667 if (hp == NULL) | |
| 4668 { | |
| 4669 buf->b_ml.ml_usedchunks = -1; | |
| 4670 return; | |
| 4671 } | |
| 4672 dp = (DATA_BL *)(hp->bh_data); | |
| 4673 if (dp->db_line_count == 1) | |
| 4674 rest = dp->db_txt_end - dp->db_txt_start; | |
| 4675 else | |
| 4676 rest = | |
| 4677 ((dp->db_index[dp->db_line_count - 2]) & DB_INDEX_MASK) | |
| 4678 - dp->db_txt_start; | |
| 4679 curchnk->mlcs_totalsize = rest; | |
| 4680 curchnk->mlcs_numlines = 1; | |
| 4681 curchnk[-1].mlcs_totalsize -= rest; | |
| 4682 curchnk[-1].mlcs_numlines -= 1; | |
| 4683 } | |
| 4684 } | |
| 4685 } | |
| 4686 else if (updtype == ML_CHNK_DELLINE) | |
| 4687 { | |
| 4688 curchnk->mlcs_numlines--; | |
| 4689 ml_upd_lastbuf = NULL; /* Force recalc of curix & curline */ | |
| 4690 if (curix < (buf->b_ml.ml_usedchunks - 1) | |
| 4691 && (curchnk->mlcs_numlines + curchnk[1].mlcs_numlines) | |
| 4692 <= MLCS_MINL) | |
| 4693 { | |
| 4694 curix++; | |
| 4695 curchnk = buf->b_ml.ml_chunksize + curix; | |
| 4696 } | |
| 4697 else if (curix == 0 && curchnk->mlcs_numlines <= 0) | |
| 4698 { | |
| 4699 buf->b_ml.ml_usedchunks--; | |
| 4700 mch_memmove(buf->b_ml.ml_chunksize, buf->b_ml.ml_chunksize + 1, | |
| 4701 buf->b_ml.ml_usedchunks * sizeof(chunksize_T)); | |
| 4702 return; | |
| 4703 } | |
| 4704 else if (curix == 0 || (curchnk->mlcs_numlines > 10 | |
| 4705 && (curchnk->mlcs_numlines + curchnk[-1].mlcs_numlines) | |
| 4706 > MLCS_MINL)) | |
| 4707 { | |
| 4708 return; | |
| 4709 } | |
| 4710 | |
| 4711 /* Collapse chunks */ | |
| 4712 curchnk[-1].mlcs_numlines += curchnk->mlcs_numlines; | |
| 4713 curchnk[-1].mlcs_totalsize += curchnk->mlcs_totalsize; | |
| 4714 buf->b_ml.ml_usedchunks--; | |
| 4715 if (curix < buf->b_ml.ml_usedchunks) | |
| 4716 { | |
| 4717 mch_memmove(buf->b_ml.ml_chunksize + curix, | |
| 4718 buf->b_ml.ml_chunksize + curix + 1, | |
| 4719 (buf->b_ml.ml_usedchunks - curix) * | |
| 4720 sizeof(chunksize_T)); | |
| 4721 } | |
| 4722 return; | |
| 4723 } | |
| 4724 ml_upd_lastbuf = buf; | |
| 4725 ml_upd_lastline = line; | |
| 4726 ml_upd_lastcurline = curline; | |
| 4727 ml_upd_lastcurix = curix; | |
| 4728 } | |
| 4729 | |
| 4730 /* | |
| 4731 * Find offset for line or line with offset. | |
| 169 | 4732 * Find line with offset if "lnum" is 0; return remaining offset in offp |
| 4733 * Find offset of line if "lnum" > 0 | |
| 7 | 4734 * return -1 if information is not available |
| 4735 */ | |
| 4736 long | |
| 169 | 4737 ml_find_line_or_offset(buf, lnum, offp) |
| 7 | 4738 buf_T *buf; |
| 169 | 4739 linenr_T lnum; |
| 7 | 4740 long *offp; |
| 4741 { | |
| 4742 linenr_T curline; | |
| 4743 int curix; | |
| 4744 long size; | |
| 4745 bhdr_T *hp; | |
| 4746 DATA_BL *dp; | |
| 4747 int count; /* number of entries in block */ | |
| 4748 int idx; | |
| 4749 int start_idx; | |
| 4750 int text_end; | |
| 4751 long offset; | |
| 4752 int len; | |
| 4753 int ffdos = (get_fileformat(buf) == EOL_DOS); | |
| 4754 int extra = 0; | |
| 4755 | |
| 169 | 4756 /* take care of cached line first */ |
| 4757 ml_flush_line(curbuf); | |
| 4758 | |
| 7 | 4759 if (buf->b_ml.ml_usedchunks == -1 |
| 4760 || buf->b_ml.ml_chunksize == NULL | |
| 169 | 4761 || lnum < 0) |
| 7 | 4762 return -1; |
| 4763 | |
| 4764 if (offp == NULL) | |
| 4765 offset = 0; | |
| 4766 else | |
| 4767 offset = *offp; | |
| 169 | 4768 if (lnum == 0 && offset <= 0) |
| 7 | 4769 return 1; /* Not a "find offset" and offset 0 _must_ be in line 1 */ |
| 4770 /* | |
| 4771 * Find the last chunk before the one containing our line. Last chunk is | |
| 4772 * special because it will never qualify | |
| 4773 */ | |
| 4774 curline = 1; | |
| 4775 curix = size = 0; | |
| 4776 while (curix < buf->b_ml.ml_usedchunks - 1 | |
| 169 | 4777 && ((lnum != 0 |
| 4778 && lnum >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines) | |
| 7 | 4779 || (offset != 0 |
| 4780 && offset > size + buf->b_ml.ml_chunksize[curix].mlcs_totalsize | |
| 4781 + ffdos * buf->b_ml.ml_chunksize[curix].mlcs_numlines))) | |
| 4782 { | |
| 4783 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 4784 size += buf->b_ml.ml_chunksize[curix].mlcs_totalsize; | |
| 4785 if (offset && ffdos) | |
| 4786 size += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 4787 curix++; | |
| 4788 } | |
| 4789 | |
| 169 | 4790 while ((lnum != 0 && curline < lnum) || (offset != 0 && size < offset)) |
| 7 | 4791 { |
| 4792 if (curline > buf->b_ml.ml_line_count | |
| 4793 || (hp = ml_find_line(buf, curline, ML_FIND)) == NULL) | |
| 4794 return -1; | |
| 4795 dp = (DATA_BL *)(hp->bh_data); | |
| 4796 count = (long)(buf->b_ml.ml_locked_high) - | |
| 4797 (long)(buf->b_ml.ml_locked_low) + 1; | |
| 4798 start_idx = idx = curline - buf->b_ml.ml_locked_low; | |
| 4799 if (idx == 0)/* first line in block, text at the end */ | |
| 4800 text_end = dp->db_txt_end; | |
| 4801 else | |
| 4802 text_end = ((dp->db_index[idx - 1]) & DB_INDEX_MASK); | |
| 4803 /* Compute index of last line to use in this MEMLINE */ | |
| 169 | 4804 if (lnum != 0) |
| 7 | 4805 { |
| 169 | 4806 if (curline + (count - idx) >= lnum) |
| 4807 idx += lnum - curline - 1; | |
| 7 | 4808 else |
| 4809 idx = count - 1; | |
| 4810 } | |
| 4811 else | |
| 4812 { | |
| 4813 extra = 0; | |
| 4814 while (offset >= size | |
| 4815 + text_end - (int)((dp->db_index[idx]) & DB_INDEX_MASK) | |
| 4816 + ffdos) | |
| 4817 { | |
| 4818 if (ffdos) | |
| 4819 size++; | |
| 4820 if (idx == count - 1) | |
| 4821 { | |
| 4822 extra = 1; | |
| 4823 break; | |
| 4824 } | |
| 4825 idx++; | |
| 4826 } | |
| 4827 } | |
| 4828 len = text_end - ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 4829 size += len; | |
| 4830 if (offset != 0 && size >= offset) | |
| 4831 { | |
| 4832 if (size + ffdos == offset) | |
| 4833 *offp = 0; | |
| 4834 else if (idx == start_idx) | |
| 4835 *offp = offset - size + len; | |
| 4836 else | |
| 4837 *offp = offset - size + len | |
| 4838 - (text_end - ((dp->db_index[idx - 1]) & DB_INDEX_MASK)); | |
| 4839 curline += idx - start_idx + extra; | |
| 4840 if (curline > buf->b_ml.ml_line_count) | |
| 4841 return -1; /* exactly one byte beyond the end */ | |
| 4842 return curline; | |
| 4843 } | |
| 4844 curline = buf->b_ml.ml_locked_high + 1; | |
| 4845 } | |
| 4846 | |
| 169 | 4847 if (lnum != 0) |
| 20 | 4848 { |
| 4849 /* Count extra CR characters. */ | |
| 4850 if (ffdos) | |
| 169 | 4851 size += lnum - 1; |
| 20 | 4852 |
| 4853 /* Don't count the last line break if 'bin' and 'noeol'. */ | |
| 4854 if (buf->b_p_bin && !buf->b_p_eol) | |
| 4855 size -= ffdos + 1; | |
| 4856 } | |
| 4857 | |
| 7 | 4858 return size; |
| 4859 } | |
| 4860 | |
| 4861 /* | |
| 4862 * Goto byte in buffer with offset 'cnt'. | |
| 4863 */ | |
| 4864 void | |
| 4865 goto_byte(cnt) | |
| 4866 long cnt; | |
| 4867 { | |
| 4868 long boff = cnt; | |
| 4869 linenr_T lnum; | |
| 4870 | |
| 4871 ml_flush_line(curbuf); /* cached line may be dirty */ | |
| 4872 setpcmark(); | |
| 4873 if (boff) | |
| 4874 --boff; | |
| 4875 lnum = ml_find_line_or_offset(curbuf, (linenr_T)0, &boff); | |
| 4876 if (lnum < 1) /* past the end */ | |
| 4877 { | |
| 4878 curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; | |
| 4879 curwin->w_curswant = MAXCOL; | |
| 4880 coladvance((colnr_T)MAXCOL); | |
| 4881 } | |
| 4882 else | |
| 4883 { | |
| 4884 curwin->w_cursor.lnum = lnum; | |
| 4885 curwin->w_cursor.col = (colnr_T)boff; | |
| 572 | 4886 # ifdef FEAT_VIRTUALEDIT |
| 4887 curwin->w_cursor.coladd = 0; | |
| 4888 # endif | |
| 7 | 4889 curwin->w_set_curswant = TRUE; |
| 4890 } | |
| 4891 check_cursor(); | |
| 4892 | |
| 4893 # ifdef FEAT_MBYTE | |
| 4894 /* Make sure the cursor is on the first byte of a multi-byte char. */ | |
| 4895 if (has_mbyte) | |
| 4896 mb_adjust_cursor(); | |
| 4897 # endif | |
| 4898 } | |
| 4899 #endif |