Mercurial > vim
annotate src/memline.c @ 2407:6bc102a4bff8 vim73
Fix memory access to 'cryptmethod' during recovery. (Dominique Pelle)
| author | Bram Moolenaar <bram@vim.org> |
|---|---|
| date | Sun, 25 Jul 2010 14:00:46 +0200 |
| parents | a3aca345aafa |
| children | 9e2e63af1641 |
| 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 | |
| 2267 | 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 #define BLOCK0_ID1_C0 'c' /* block 0 id 1 'cm' 0 */ | |
| 73 #define BLOCK0_ID1_C1 'C' /* block 0 id 1 'cm' 1 */ | |
| 7 | 74 |
| 75 /* | |
| 76 * pointer to a block, used in a pointer block | |
| 77 */ | |
| 78 struct pointer_entry | |
| 79 { | |
| 80 blocknr_T pe_bnum; /* block number */ | |
| 81 linenr_T pe_line_count; /* number of lines in this branch */ | |
| 82 linenr_T pe_old_lnum; /* lnum for this block (for recovery) */ | |
| 83 int pe_page_count; /* number of pages in block pe_bnum */ | |
| 84 }; | |
| 85 | |
| 86 /* | |
| 87 * A pointer block contains a list of branches in the tree. | |
| 88 */ | |
| 89 struct pointer_block | |
| 90 { | |
| 91 short_u pb_id; /* ID for pointer block: PTR_ID */ | |
|
2240
6b4879aea261
Add test for gettabvar() and settabvar().
Bram Moolenaar <bram@vim.org>
parents:
2221
diff
changeset
|
92 short_u pb_count; /* number of pointers in this block */ |
| 7 | 93 short_u pb_count_max; /* maximum value for pb_count */ |
| 94 PTR_EN pb_pointer[1]; /* list of pointers to blocks (actually longer) | |
| 95 * followed by empty space until end of page */ | |
| 96 }; | |
| 97 | |
| 98 /* | |
| 99 * A data block is a leaf in the tree. | |
| 100 * | |
| 101 * The text of the lines is at the end of the block. The text of the first line | |
| 102 * in the block is put at the end, the text of the second line in front of it, | |
| 103 * etc. Thus the order of the lines is the opposite of the line number. | |
| 104 */ | |
| 105 struct data_block | |
| 106 { | |
| 107 short_u db_id; /* ID for data block: DATA_ID */ | |
| 108 unsigned db_free; /* free space available */ | |
| 109 unsigned db_txt_start; /* byte where text starts */ | |
| 110 unsigned db_txt_end; /* byte just after data block */ | |
| 111 linenr_T db_line_count; /* number of lines in this block */ | |
| 112 unsigned db_index[1]; /* index for start of line (actually bigger) | |
| 113 * followed by empty space upto db_txt_start | |
| 114 * followed by the text in the lines until | |
| 115 * end of page */ | |
| 116 }; | |
| 117 | |
| 118 /* | |
| 119 * The low bits of db_index hold the actual index. The topmost bit is | |
| 120 * used for the global command to be able to mark a line. | |
| 121 * This method is not clean, but otherwise there would be at least one extra | |
| 122 * byte used for each line. | |
| 123 * The mark has to be in this place to keep it with the correct line when other | |
| 124 * lines are inserted or deleted. | |
| 125 */ | |
| 126 #define DB_MARKED ((unsigned)1 << ((sizeof(unsigned) * 8) - 1)) | |
| 127 #define DB_INDEX_MASK (~DB_MARKED) | |
| 128 | |
| 129 #define INDEX_SIZE (sizeof(unsigned)) /* size of one db_index entry */ | |
| 130 #define HEADER_SIZE (sizeof(DATA_BL) - INDEX_SIZE) /* size of data block header */ | |
| 131 | |
| 39 | 132 #define B0_FNAME_SIZE_ORG 900 /* what it was in older versions */ |
| 2267 | 133 #define B0_FNAME_SIZE_NOCRYPT 898 /* 2 bytes used for other things */ |
| 134 #define B0_FNAME_SIZE_CRYPT 890 /* 10 bytes used for other things */ | |
| 39 | 135 #define B0_UNAME_SIZE 40 |
| 136 #define B0_HNAME_SIZE 40 | |
| 7 | 137 /* |
| 138 * Restrict the numbers to 32 bits, otherwise most compilers will complain. | |
| 139 * This won't detect a 64 bit machine that only swaps a byte in the top 32 | |
| 140 * bits, but that is crazy anyway. | |
| 141 */ | |
| 142 #define B0_MAGIC_LONG 0x30313233L | |
| 143 #define B0_MAGIC_INT 0x20212223L | |
| 144 #define B0_MAGIC_SHORT 0x10111213L | |
| 145 #define B0_MAGIC_CHAR 0x55 | |
| 146 | |
| 147 /* | |
| 148 * Block zero holds all info about the swap file. | |
| 149 * | |
| 150 * NOTE: DEFINITION OF BLOCK 0 SHOULD NOT CHANGE! It would make all existing | |
| 151 * swap files unusable! | |
| 152 * | |
| 153 * If size of block0 changes anyway, adjust MIN_SWAP_PAGE_SIZE in vim.h!! | |
| 154 * | |
| 1228 | 155 * This block is built up of single bytes, to make it portable across |
| 7 | 156 * different machines. b0_magic_* is used to check the byte order and size of |
| 157 * variables, because the rest of the swap file is not portable. | |
| 158 */ | |
| 159 struct block0 | |
| 160 { | |
| 2267 | 161 char_u b0_id[2]; /* id for block 0: BLOCK0_ID0 and BLOCK0_ID1, |
| 162 * BLOCK0_ID1_C0, BLOCK0_ID1_C1 */ | |
| 7 | 163 char_u b0_version[10]; /* Vim version string */ |
| 164 char_u b0_page_size[4];/* number of bytes per page */ | |
| 165 char_u b0_mtime[4]; /* last modification time of file */ | |
| 166 char_u b0_ino[4]; /* inode of b0_fname */ | |
| 167 char_u b0_pid[4]; /* process id of creator (or 0) */ | |
| 168 char_u b0_uname[B0_UNAME_SIZE]; /* name of user (uid if no name) */ | |
| 169 char_u b0_hname[B0_HNAME_SIZE]; /* host name (if it has a name) */ | |
| 39 | 170 char_u b0_fname[B0_FNAME_SIZE_ORG]; /* name of file being edited */ |
| 7 | 171 long b0_magic_long; /* check for byte order of long */ |
| 172 int b0_magic_int; /* check for byte order of int */ | |
| 173 short b0_magic_short; /* check for byte order of short */ | |
| 174 char_u b0_magic_char; /* check for last char */ | |
| 175 }; | |
| 39 | 176 |
| 177 /* | |
| 625 | 178 * Note: b0_dirty and b0_flags are put at the end of the file name. For very |
| 39 | 179 * long file names in older versions of Vim they are invalid. |
| 180 * The 'fileencoding' comes before b0_flags, with a NUL in front. But only | |
| 181 * when there is room, for very long file names it's omitted. | |
| 182 */ | |
| 183 #define B0_DIRTY 0x55 | |
| 2267 | 184 #define b0_dirty b0_fname[B0_FNAME_SIZE_ORG - 1] |
| 39 | 185 |
| 186 /* | |
| 187 * The b0_flags field is new in Vim 7.0. | |
| 188 */ | |
| 2267 | 189 #define b0_flags b0_fname[B0_FNAME_SIZE_ORG - 2] |
| 190 | |
| 191 /* | |
| 192 * Crypt seed goes here, 8 bytes. New in Vim 7.3. | |
| 193 * Without encryption these bytes may be used for 'fenc'. | |
| 194 */ | |
| 195 #define b0_seed b0_fname[B0_FNAME_SIZE_ORG - 2 - MF_SEED_LEN] | |
| 39 | 196 |
| 197 /* The lowest two bits contain the fileformat. Zero means it's not set | |
| 198 * (compatible with Vim 6.x), otherwise it's EOL_UNIX + 1, EOL_DOS + 1 or | |
| 199 * EOL_MAC + 1. */ | |
| 200 #define B0_FF_MASK 3 | |
| 201 | |
| 202 /* Swap file is in directory of edited file. Used to find the file from | |
| 203 * different mount points. */ | |
| 204 #define B0_SAME_DIR 4 | |
| 205 | |
| 206 /* The 'fileencoding' is at the end of b0_fname[], with a NUL in front of it. | |
| 207 * When empty there is only the NUL. */ | |
| 208 #define B0_HAS_FENC 8 | |
| 7 | 209 |
| 210 #define STACK_INCR 5 /* nr of entries added to ml_stack at a time */ | |
| 211 | |
| 212 /* | |
| 213 * The line number where the first mark may be is remembered. | |
| 214 * If it is 0 there are no marks at all. | |
| 215 * (always used for the current buffer only, no buffer change possible while | |
| 216 * executing a global command). | |
| 217 */ | |
| 218 static linenr_T lowest_marked = 0; | |
| 219 | |
| 220 /* | |
| 221 * arguments for ml_find_line() | |
| 222 */ | |
| 223 #define ML_DELETE 0x11 /* delete line */ | |
| 224 #define ML_INSERT 0x12 /* insert line */ | |
| 225 #define ML_FIND 0x13 /* just find the line */ | |
| 226 #define ML_FLUSH 0x02 /* flush locked block */ | |
| 227 #define ML_SIMPLE(x) (x & 0x10) /* DEL, INS or FIND */ | |
| 228 | |
| 2267 | 229 /* argument for ml_upd_block0() */ |
| 230 typedef enum { | |
| 231 UB_FNAME = 0 /* update timestamp and filename */ | |
| 232 , UB_SAME_DIR /* update the B0_SAME_DIR flag */ | |
| 233 , UB_CRYPT /* update crypt key */ | |
| 234 } upd_block0_T; | |
| 235 | |
| 236 #ifdef FEAT_CRYPT | |
| 237 static void ml_set_b0_crypt __ARGS((buf_T *buf, ZERO_BL *b0p)); | |
| 238 #endif | |
| 239 static int ml_check_b0_id __ARGS((ZERO_BL *b0p)); | |
| 240 static void ml_upd_block0 __ARGS((buf_T *buf, upd_block0_T what)); | |
| 7 | 241 static void set_b0_fname __ARGS((ZERO_BL *, buf_T *buf)); |
| 39 | 242 static void set_b0_dir_flag __ARGS((ZERO_BL *b0p, buf_T *buf)); |
| 243 #ifdef FEAT_MBYTE | |
| 244 static void add_b0_fenc __ARGS((ZERO_BL *b0p, buf_T *buf)); | |
| 245 #endif | |
| 7 | 246 static time_t swapfile_info __ARGS((char_u *)); |
| 247 static int recov_file_names __ARGS((char_u **, char_u *, int prepend_dot)); | |
| 248 static int ml_append_int __ARGS((buf_T *, linenr_T, char_u *, colnr_T, int, int)); | |
| 249 static int ml_delete_int __ARGS((buf_T *, linenr_T, int)); | |
| 250 static char_u *findswapname __ARGS((buf_T *, char_u **, char_u *)); | |
| 251 static void ml_flush_line __ARGS((buf_T *)); | |
| 252 static bhdr_T *ml_new_data __ARGS((memfile_T *, int, int)); | |
| 253 static bhdr_T *ml_new_ptr __ARGS((memfile_T *)); | |
| 254 static bhdr_T *ml_find_line __ARGS((buf_T *, linenr_T, int)); | |
| 255 static int ml_add_stack __ARGS((buf_T *)); | |
| 256 static void ml_lineadd __ARGS((buf_T *, int)); | |
| 257 static int b0_magic_wrong __ARGS((ZERO_BL *)); | |
| 258 #ifdef CHECK_INODE | |
| 259 static int fnamecmp_ino __ARGS((char_u *, char_u *, long)); | |
| 260 #endif | |
| 261 static void long_to_char __ARGS((long, char_u *)); | |
| 262 static long char_to_long __ARGS((char_u *)); | |
| 263 #if defined(UNIX) || defined(WIN3264) | |
| 264 static char_u *make_percent_swname __ARGS((char_u *dir, char_u *name)); | |
| 265 #endif | |
| 2267 | 266 #ifdef FEAT_CRYPT |
| 267 static void ml_crypt_prepare __ARGS((memfile_T *mfp, off_t offset, int reading)); | |
| 268 #endif | |
| 7 | 269 #ifdef FEAT_BYTEOFF |
| 270 static void ml_updatechunk __ARGS((buf_T *buf, long line, long len, int updtype)); | |
| 271 #endif | |
| 272 | |
| 273 /* | |
| 625 | 274 * Open a new memline for "buf". |
| 7 | 275 * |
| 625 | 276 * Return FAIL for failure, OK otherwise. |
| 7 | 277 */ |
| 278 int | |
| 625 | 279 ml_open(buf) |
| 280 buf_T *buf; | |
| 7 | 281 { |
| 282 memfile_T *mfp; | |
| 283 bhdr_T *hp = NULL; | |
| 284 ZERO_BL *b0p; | |
| 285 PTR_BL *pp; | |
| 286 DATA_BL *dp; | |
| 287 | |
| 625 | 288 /* |
| 289 * init fields in memline struct | |
| 290 */ | |
| 2267 | 291 buf->b_ml.ml_stack_size = 0; /* no stack yet */ |
| 625 | 292 buf->b_ml.ml_stack = NULL; /* no stack yet */ |
| 293 buf->b_ml.ml_stack_top = 0; /* nothing in the stack */ | |
| 294 buf->b_ml.ml_locked = NULL; /* no cached block */ | |
| 295 buf->b_ml.ml_line_lnum = 0; /* no cached line */ | |
| 7 | 296 #ifdef FEAT_BYTEOFF |
| 625 | 297 buf->b_ml.ml_chunksize = NULL; |
| 7 | 298 #endif |
| 299 | |
| 625 | 300 /* |
| 301 * When 'updatecount' is non-zero swap file may be opened later. | |
| 302 */ | |
| 303 if (p_uc && buf->b_p_swf) | |
| 304 buf->b_may_swap = TRUE; | |
| 7 | 305 else |
| 625 | 306 buf->b_may_swap = FALSE; |
| 307 | |
| 308 /* | |
| 309 * Open the memfile. No swap file is created yet. | |
| 310 */ | |
| 7 | 311 mfp = mf_open(NULL, 0); |
| 312 if (mfp == NULL) | |
| 313 goto error; | |
| 314 | |
| 625 | 315 buf->b_ml.ml_mfp = mfp; |
| 2267 | 316 #ifdef FEAT_CRYPT |
| 317 mfp->mf_buffer = buf; | |
| 318 #endif | |
| 625 | 319 buf->b_ml.ml_flags = ML_EMPTY; |
| 320 buf->b_ml.ml_line_count = 1; | |
| 13 | 321 #ifdef FEAT_LINEBREAK |
| 322 curwin->w_nrwidth_line_count = 0; | |
| 323 #endif | |
| 7 | 324 |
| 325 #if defined(MSDOS) && !defined(DJGPP) | |
| 326 /* for 16 bit MS-DOS create a swapfile now, because we run out of | |
| 327 * memory very quickly */ | |
| 328 if (p_uc != 0) | |
| 625 | 329 ml_open_file(buf); |
| 7 | 330 #endif |
| 331 | |
| 332 /* | |
| 333 * fill block0 struct and write page 0 | |
| 334 */ | |
| 335 if ((hp = mf_new(mfp, FALSE, 1)) == NULL) | |
| 336 goto error; | |
| 337 if (hp->bh_bnum != 0) | |
| 338 { | |
| 339 EMSG(_("E298: Didn't get block nr 0?")); | |
| 340 goto error; | |
| 341 } | |
| 342 b0p = (ZERO_BL *)(hp->bh_data); | |
| 343 | |
| 344 b0p->b0_id[0] = BLOCK0_ID0; | |
| 345 b0p->b0_id[1] = BLOCK0_ID1; | |
| 346 b0p->b0_magic_long = (long)B0_MAGIC_LONG; | |
| 347 b0p->b0_magic_int = (int)B0_MAGIC_INT; | |
| 348 b0p->b0_magic_short = (short)B0_MAGIC_SHORT; | |
| 349 b0p->b0_magic_char = B0_MAGIC_CHAR; | |
| 350 STRNCPY(b0p->b0_version, "VIM ", 4); | |
| 351 STRNCPY(b0p->b0_version + 4, Version, 6); | |
| 352 long_to_char((long)mfp->mf_page_size, b0p->b0_page_size); | |
| 625 | 353 |
| 800 | 354 #ifdef FEAT_SPELL |
| 355 if (!buf->b_spell) | |
| 356 #endif | |
| 625 | 357 { |
| 358 b0p->b0_dirty = buf->b_changed ? B0_DIRTY : 0; | |
| 359 b0p->b0_flags = get_fileformat(buf) + 1; | |
| 360 set_b0_fname(b0p, buf); | |
| 361 (void)get_user_name(b0p->b0_uname, B0_UNAME_SIZE); | |
| 362 b0p->b0_uname[B0_UNAME_SIZE - 1] = NUL; | |
| 363 mch_get_host_name(b0p->b0_hname, B0_HNAME_SIZE); | |
| 364 b0p->b0_hname[B0_HNAME_SIZE - 1] = NUL; | |
| 365 long_to_char(mch_get_pid(), b0p->b0_pid); | |
| 2267 | 366 #ifdef FEAT_CRYPT |
| 367 if (*buf->b_p_key != NUL) | |
| 368 ml_set_b0_crypt(buf, b0p); | |
| 369 #endif | |
| 625 | 370 } |
| 7 | 371 |
| 372 /* | |
| 373 * Always sync block number 0 to disk, so we can check the file name in | |
| 2267 | 374 * the swap file in findswapname(). Don't do this for a help files or |
| 375 * a spell buffer though. | |
| 7 | 376 * Only works when there's a swapfile, otherwise it's done when the file |
| 377 * is created. | |
| 378 */ | |
| 379 mf_put(mfp, hp, TRUE, FALSE); | |
| 625 | 380 if (!buf->b_help && !B_SPELL(buf)) |
| 7 | 381 (void)mf_sync(mfp, 0); |
| 382 | |
| 625 | 383 /* |
| 384 * Fill in root pointer block and write page 1. | |
| 385 */ | |
| 7 | 386 if ((hp = ml_new_ptr(mfp)) == NULL) |
| 387 goto error; | |
| 388 if (hp->bh_bnum != 1) | |
| 389 { | |
| 390 EMSG(_("E298: Didn't get block nr 1?")); | |
| 391 goto error; | |
| 392 } | |
| 393 pp = (PTR_BL *)(hp->bh_data); | |
| 394 pp->pb_count = 1; | |
| 395 pp->pb_pointer[0].pe_bnum = 2; | |
| 396 pp->pb_pointer[0].pe_page_count = 1; | |
| 397 pp->pb_pointer[0].pe_old_lnum = 1; | |
| 398 pp->pb_pointer[0].pe_line_count = 1; /* line count after insertion */ | |
| 399 mf_put(mfp, hp, TRUE, FALSE); | |
| 400 | |
| 625 | 401 /* |
| 402 * Allocate first data block and create an empty line 1. | |
| 403 */ | |
| 7 | 404 if ((hp = ml_new_data(mfp, FALSE, 1)) == NULL) |
| 405 goto error; | |
| 406 if (hp->bh_bnum != 2) | |
| 407 { | |
| 408 EMSG(_("E298: Didn't get block nr 2?")); | |
| 409 goto error; | |
| 410 } | |
| 411 | |
| 412 dp = (DATA_BL *)(hp->bh_data); | |
| 413 dp->db_index[0] = --dp->db_txt_start; /* at end of block */ | |
| 414 dp->db_free -= 1 + INDEX_SIZE; | |
| 415 dp->db_line_count = 1; | |
| 2003 | 416 *((char_u *)dp + dp->db_txt_start) = NUL; /* empty line */ |
| 7 | 417 |
| 418 return OK; | |
| 419 | |
| 420 error: | |
| 421 if (mfp != NULL) | |
| 422 { | |
| 423 if (hp) | |
| 424 mf_put(mfp, hp, FALSE, FALSE); | |
| 425 mf_close(mfp, TRUE); /* will also free(mfp->mf_fname) */ | |
| 426 } | |
| 625 | 427 buf->b_ml.ml_mfp = NULL; |
| 7 | 428 return FAIL; |
| 429 } | |
| 430 | |
| 2267 | 431 #if defined(FEAT_CRYPT) || defined(PROTO) |
| 432 /* | |
| 433 * Prepare encryption for "buf" with block 0 "b0p". | |
| 434 */ | |
| 435 static void | |
| 436 ml_set_b0_crypt(buf, b0p) | |
| 437 buf_T *buf; | |
| 438 ZERO_BL *b0p; | |
| 439 { | |
| 440 if (*buf->b_p_key == NUL) | |
| 441 b0p->b0_id[1] = BLOCK0_ID1; | |
| 442 else | |
| 443 { | |
|
2360
d8e4b27cef80
Change 'cryptmethod' from a number to a string option. Make it global-local.
Bram Moolenaar <bram@vim.org>
parents:
2283
diff
changeset
|
444 if (get_crypt_method(buf) == 0) |
| 2267 | 445 b0p->b0_id[1] = BLOCK0_ID1_C0; |
| 446 else | |
| 447 { | |
| 448 b0p->b0_id[1] = BLOCK0_ID1_C1; | |
| 449 /* Generate a seed and store it in block 0 and in the memfile. */ | |
| 450 sha2_seed(&b0p->b0_seed, MF_SEED_LEN, NULL, 0); | |
| 451 mch_memmove(buf->b_ml.ml_mfp->mf_seed, &b0p->b0_seed, MF_SEED_LEN); | |
| 452 } | |
| 453 } | |
| 454 } | |
| 455 | |
| 456 /* | |
| 457 * Called after the crypt key or 'cryptmethod' was changed for "buf". | |
| 458 * Will apply this to the swapfile. | |
| 459 * "old_key" is the previous key. It is equal to buf->b_p_key when | |
| 460 * 'cryptmethod' is changed. | |
|
2360
d8e4b27cef80
Change 'cryptmethod' from a number to a string option. Make it global-local.
Bram Moolenaar <bram@vim.org>
parents:
2283
diff
changeset
|
461 * "old_cm" is the previous 'cryptmethod'. It is equal to the current |
|
d8e4b27cef80
Change 'cryptmethod' from a number to a string option. Make it global-local.
Bram Moolenaar <bram@vim.org>
parents:
2283
diff
changeset
|
462 * 'cryptmethod' when 'key' is changed. |
| 2267 | 463 */ |
| 464 void | |
| 465 ml_set_crypt_key(buf, old_key, old_cm) | |
| 466 buf_T *buf; | |
| 467 char_u *old_key; | |
| 468 int old_cm; | |
| 469 { | |
| 470 memfile_T *mfp = buf->b_ml.ml_mfp; | |
| 471 bhdr_T *hp; | |
| 472 int page_count; | |
| 473 int idx; | |
| 474 long error; | |
| 475 infoptr_T *ip; | |
| 476 PTR_BL *pp; | |
| 477 DATA_BL *dp; | |
| 478 blocknr_T bnum; | |
| 479 int top; | |
| 480 | |
| 481 if (mfp == NULL || mfp->mf_fd < 0) | |
| 482 return; /* no memfile yet, nothing to do */ | |
| 483 | |
| 484 /* Set the key, method and seed to be used for reading, these must be the | |
| 485 * old values. */ | |
| 486 mfp->mf_old_key = old_key; | |
| 487 mfp->mf_old_cm = old_cm; | |
| 488 if (old_cm > 0) | |
| 489 mch_memmove(mfp->mf_old_seed, mfp->mf_seed, MF_SEED_LEN); | |
| 490 | |
| 491 /* Update block 0 with the crypt flag and may set a new seed. */ | |
| 492 ml_upd_block0(buf, UB_CRYPT); | |
| 493 | |
| 494 if (mfp->mf_infile_count > 2) | |
| 495 { | |
| 496 /* | |
| 497 * Need to read back all data blocks from disk, decrypt them with the | |
| 498 * old key/method and mark them to be written. The algorithm is | |
| 499 * similar to what happens in ml_recover(), but we skip negative block | |
| 500 * numbers. | |
| 501 */ | |
| 502 ml_flush_line(buf); /* flush buffered line */ | |
| 503 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
| 504 | |
| 505 hp = NULL; | |
| 506 bnum = 1; /* start with block 1 */ | |
| 507 page_count = 1; /* which is 1 page */ | |
| 508 idx = 0; /* start with first index in block 1 */ | |
| 509 error = 0; | |
| 510 buf->b_ml.ml_stack_top = 0; | |
|
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Bram Moolenaar <bram@vim.org>
parents:
2272
diff
changeset
|
511 vim_free(buf->b_ml.ml_stack); |
| 2267 | 512 buf->b_ml.ml_stack = NULL; |
| 513 buf->b_ml.ml_stack_size = 0; /* no stack yet */ | |
| 514 | |
| 515 for ( ; !got_int; line_breakcheck()) | |
| 516 { | |
| 517 if (hp != NULL) | |
| 518 mf_put(mfp, hp, FALSE, FALSE); /* release previous block */ | |
| 519 | |
| 520 /* get the block (pointer or data) */ | |
| 521 if ((hp = mf_get(mfp, (blocknr_T)bnum, page_count)) == NULL) | |
| 522 { | |
| 523 if (bnum == 1) | |
| 524 break; | |
| 525 ++error; | |
| 526 } | |
| 527 else | |
| 528 { | |
| 529 pp = (PTR_BL *)(hp->bh_data); | |
| 530 if (pp->pb_id == PTR_ID) /* it is a pointer block */ | |
| 531 { | |
| 532 if (pp->pb_count == 0) | |
| 533 { | |
| 534 /* empty block? */ | |
| 535 ++error; | |
| 536 } | |
| 537 else if (idx < (int)pp->pb_count) /* go a block deeper */ | |
| 538 { | |
| 539 if (pp->pb_pointer[idx].pe_bnum < 0) | |
| 540 { | |
| 541 /* Skip data block with negative block number. */ | |
| 542 ++idx; /* get same block again for next index */ | |
| 543 continue; | |
| 544 } | |
| 545 | |
| 546 /* going one block deeper in the tree, new entry in | |
| 547 * stack */ | |
| 548 if ((top = ml_add_stack(buf)) < 0) | |
| 549 { | |
| 550 ++error; | |
| 551 break; /* out of memory */ | |
| 552 } | |
| 553 ip = &(buf->b_ml.ml_stack[top]); | |
| 554 ip->ip_bnum = bnum; | |
| 555 ip->ip_index = idx; | |
| 556 | |
| 557 bnum = pp->pb_pointer[idx].pe_bnum; | |
| 558 page_count = pp->pb_pointer[idx].pe_page_count; | |
| 559 continue; | |
| 560 } | |
| 561 } | |
| 562 else /* not a pointer block */ | |
| 563 { | |
| 564 dp = (DATA_BL *)(hp->bh_data); | |
| 565 if (dp->db_id != DATA_ID) /* block id wrong */ | |
| 566 ++error; | |
| 567 else | |
| 568 { | |
| 569 /* It is a data block, need to write it back to disk. */ | |
| 570 mf_put(mfp, hp, TRUE, FALSE); | |
| 571 hp = NULL; | |
| 572 } | |
| 573 } | |
| 574 } | |
| 575 | |
| 576 if (buf->b_ml.ml_stack_top == 0) /* finished */ | |
| 577 break; | |
| 578 | |
| 579 /* go one block up in the tree */ | |
| 580 ip = &(buf->b_ml.ml_stack[--(buf->b_ml.ml_stack_top)]); | |
| 581 bnum = ip->ip_bnum; | |
| 582 idx = ip->ip_index + 1; /* go to next index */ | |
| 583 page_count = 1; | |
| 584 } | |
| 585 } | |
| 586 | |
| 587 mfp->mf_old_key = NULL; | |
| 588 } | |
| 589 #endif | |
| 590 | |
| 7 | 591 /* |
| 592 * ml_setname() is called when the file name of "buf" has been changed. | |
| 593 * It may rename the swap file. | |
| 594 */ | |
| 595 void | |
| 596 ml_setname(buf) | |
| 597 buf_T *buf; | |
| 598 { | |
| 599 int success = FALSE; | |
| 600 memfile_T *mfp; | |
| 601 char_u *fname; | |
| 602 char_u *dirp; | |
| 603 #if defined(MSDOS) || defined(MSWIN) | |
| 604 char_u *p; | |
| 605 #endif | |
| 606 | |
| 607 mfp = buf->b_ml.ml_mfp; | |
| 608 if (mfp->mf_fd < 0) /* there is no swap file yet */ | |
| 609 { | |
| 610 /* | |
| 611 * When 'updatecount' is 0 and 'noswapfile' there is no swap file. | |
| 612 * For help files we will make a swap file now. | |
| 613 */ | |
| 614 if (p_uc != 0) | |
| 615 ml_open_file(buf); /* create a swap file */ | |
| 616 return; | |
| 617 } | |
| 618 | |
| 619 /* | |
| 620 * Try all directories in the 'directory' option. | |
| 621 */ | |
| 622 dirp = p_dir; | |
| 623 for (;;) | |
| 624 { | |
| 625 if (*dirp == NUL) /* tried all directories, fail */ | |
| 626 break; | |
| 43 | 627 fname = findswapname(buf, &dirp, mfp->mf_fname); |
| 628 /* alloc's fname */ | |
| 7 | 629 if (fname == NULL) /* no file name found for this dir */ |
| 630 continue; | |
| 631 | |
| 632 #if defined(MSDOS) || defined(MSWIN) | |
| 633 /* | |
| 634 * Set full pathname for swap file now, because a ":!cd dir" may | |
| 635 * change directory without us knowing it. | |
| 636 */ | |
| 637 p = FullName_save(fname, FALSE); | |
| 638 vim_free(fname); | |
| 639 fname = p; | |
| 640 if (fname == NULL) | |
| 641 continue; | |
| 642 #endif | |
| 643 /* if the file name is the same we don't have to do anything */ | |
| 644 if (fnamecmp(fname, mfp->mf_fname) == 0) | |
| 645 { | |
| 646 vim_free(fname); | |
| 647 success = TRUE; | |
| 648 break; | |
| 649 } | |
| 650 /* need to close the swap file before renaming */ | |
| 651 if (mfp->mf_fd >= 0) | |
| 652 { | |
| 653 close(mfp->mf_fd); | |
| 654 mfp->mf_fd = -1; | |
| 655 } | |
| 656 | |
| 657 /* try to rename the swap file */ | |
| 658 if (vim_rename(mfp->mf_fname, fname) == 0) | |
| 659 { | |
| 660 success = TRUE; | |
| 661 vim_free(mfp->mf_fname); | |
| 662 mfp->mf_fname = fname; | |
| 663 vim_free(mfp->mf_ffname); | |
| 664 #if defined(MSDOS) || defined(MSWIN) | |
| 665 mfp->mf_ffname = NULL; /* mf_fname is full pathname already */ | |
| 666 #else | |
| 667 mf_set_ffname(mfp); | |
| 668 #endif | |
| 2267 | 669 ml_upd_block0(buf, UB_SAME_DIR); |
| 7 | 670 break; |
| 671 } | |
| 672 vim_free(fname); /* this fname didn't work, try another */ | |
| 673 } | |
| 674 | |
| 675 if (mfp->mf_fd == -1) /* need to (re)open the swap file */ | |
| 676 { | |
| 677 mfp->mf_fd = mch_open((char *)mfp->mf_fname, O_RDWR | O_EXTRA, 0); | |
| 678 if (mfp->mf_fd < 0) | |
| 679 { | |
| 680 /* could not (re)open the swap file, what can we do???? */ | |
| 681 EMSG(_("E301: Oops, lost the swap file!!!")); | |
| 682 return; | |
| 683 } | |
| 2003 | 684 #ifdef HAVE_FD_CLOEXEC |
| 685 { | |
| 686 int fdflags = fcntl(mfp->mf_fd, F_GETFD); | |
| 687 if (fdflags >= 0 && (fdflags & FD_CLOEXEC) == 0) | |
| 688 fcntl(mfp->mf_fd, F_SETFD, fdflags | FD_CLOEXEC); | |
| 689 } | |
| 690 #endif | |
| 7 | 691 } |
| 692 if (!success) | |
| 693 EMSG(_("E302: Could not rename swap file")); | |
| 694 } | |
| 695 | |
| 696 /* | |
| 697 * Open a file for the memfile for all buffers that are not readonly or have | |
| 698 * been modified. | |
| 699 * Used when 'updatecount' changes from zero to non-zero. | |
| 700 */ | |
| 701 void | |
| 702 ml_open_files() | |
| 703 { | |
| 704 buf_T *buf; | |
| 705 | |
| 706 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
| 707 if (!buf->b_p_ro || buf->b_changed) | |
| 708 ml_open_file(buf); | |
| 709 } | |
| 710 | |
| 711 /* | |
| 712 * Open a swap file for an existing memfile, if there is no swap file yet. | |
| 713 * If we are unable to find a file name, mf_fname will be NULL | |
| 714 * and the memfile will be in memory only (no recovery possible). | |
| 715 */ | |
| 716 void | |
| 717 ml_open_file(buf) | |
| 718 buf_T *buf; | |
| 719 { | |
| 720 memfile_T *mfp; | |
| 721 char_u *fname; | |
| 722 char_u *dirp; | |
| 723 | |
| 724 mfp = buf->b_ml.ml_mfp; | |
| 725 if (mfp == NULL || mfp->mf_fd >= 0 || !buf->b_p_swf) | |
| 726 return; /* nothing to do */ | |
| 727 | |
| 748 | 728 #ifdef FEAT_SPELL |
| 625 | 729 /* For a spell buffer use a temp file name. */ |
| 730 if (buf->b_spell) | |
| 731 { | |
| 732 fname = vim_tempname('s'); | |
| 733 if (fname != NULL) | |
| 734 (void)mf_open_file(mfp, fname); /* consumes fname! */ | |
| 735 buf->b_may_swap = FALSE; | |
| 736 return; | |
| 737 } | |
| 738 #endif | |
| 739 | |
| 7 | 740 /* |
| 741 * Try all directories in 'directory' option. | |
| 742 */ | |
| 743 dirp = p_dir; | |
| 744 for (;;) | |
| 745 { | |
| 746 if (*dirp == NUL) | |
| 747 break; | |
|
2273
7f09ce7b4126
Fix a memory leak in encryption. (Dominique Pelle)
Bram Moolenaar <bram@vim.org>
parents:
2272
diff
changeset
|
748 /* There is a small chance that between choosing the swap file name |
|
7f09ce7b4126
Fix a memory leak in encryption. (Dominique Pelle)
Bram Moolenaar <bram@vim.org>
parents:
2272
diff
changeset
|
749 * and creating it, another Vim creates the file. In that case the |
| 7 | 750 * creation will fail and we will use another directory. */ |
| 43 | 751 fname = findswapname(buf, &dirp, NULL); /* allocates fname */ |
| 7 | 752 if (fname == NULL) |
| 753 continue; | |
| 754 if (mf_open_file(mfp, fname) == OK) /* consumes fname! */ | |
| 755 { | |
| 756 #if defined(MSDOS) || defined(MSWIN) || defined(RISCOS) | |
| 757 /* | |
| 758 * set full pathname for swap file now, because a ":!cd dir" may | |
| 759 * change directory without us knowing it. | |
| 760 */ | |
| 761 mf_fullname(mfp); | |
| 762 #endif | |
| 2267 | 763 ml_upd_block0(buf, UB_SAME_DIR); |
| 39 | 764 |
| 7 | 765 /* Flush block zero, so others can read it */ |
| 766 if (mf_sync(mfp, MFS_ZERO) == OK) | |
| 630 | 767 { |
| 768 /* Mark all blocks that should be in the swapfile as dirty. | |
| 769 * Needed for when the 'swapfile' option was reset, so that | |
| 770 * the swap file was deleted, and then on again. */ | |
| 771 mf_set_dirty(mfp); | |
| 7 | 772 break; |
| 630 | 773 } |
| 7 | 774 /* Writing block 0 failed: close the file and try another dir */ |
| 775 mf_close_file(buf, FALSE); | |
| 776 } | |
| 777 } | |
| 778 | |
| 779 if (mfp->mf_fname == NULL) /* Failed! */ | |
| 780 { | |
| 781 need_wait_return = TRUE; /* call wait_return later */ | |
| 782 ++no_wait_return; | |
| 783 (void)EMSG2(_("E303: Unable to open swap file for \"%s\", recovery impossible"), | |
| 784 buf_spname(buf) != NULL | |
| 785 ? (char_u *)buf_spname(buf) | |
| 786 : buf->b_fname); | |
| 787 --no_wait_return; | |
| 788 } | |
| 789 | |
| 790 /* don't try to open a swap file again */ | |
| 791 buf->b_may_swap = FALSE; | |
| 792 } | |
| 793 | |
| 794 /* | |
| 795 * If still need to create a swap file, and starting to edit a not-readonly | |
| 796 * file, or reading into an existing buffer, create a swap file now. | |
| 797 */ | |
| 798 void | |
| 799 check_need_swap(newfile) | |
| 800 int newfile; /* reading file into new buffer */ | |
| 801 { | |
| 802 if (curbuf->b_may_swap && (!curbuf->b_p_ro || !newfile)) | |
| 803 ml_open_file(curbuf); | |
| 804 } | |
| 805 | |
| 806 /* | |
| 807 * Close memline for buffer 'buf'. | |
| 808 * If 'del_file' is TRUE, delete the swap file | |
| 809 */ | |
| 810 void | |
| 811 ml_close(buf, del_file) | |
| 812 buf_T *buf; | |
| 813 int del_file; | |
| 814 { | |
| 815 if (buf->b_ml.ml_mfp == NULL) /* not open */ | |
| 816 return; | |
| 817 mf_close(buf->b_ml.ml_mfp, del_file); /* close the .swp file */ | |
| 818 if (buf->b_ml.ml_line_lnum != 0 && (buf->b_ml.ml_flags & ML_LINE_DIRTY)) | |
| 819 vim_free(buf->b_ml.ml_line_ptr); | |
| 820 vim_free(buf->b_ml.ml_stack); | |
| 821 #ifdef FEAT_BYTEOFF | |
| 822 vim_free(buf->b_ml.ml_chunksize); | |
| 823 buf->b_ml.ml_chunksize = NULL; | |
| 824 #endif | |
| 825 buf->b_ml.ml_mfp = NULL; | |
| 826 | |
| 827 /* Reset the "recovered" flag, give the ATTENTION prompt the next time | |
| 828 * this buffer is loaded. */ | |
| 829 buf->b_flags &= ~BF_RECOVERED; | |
| 830 } | |
| 831 | |
| 832 /* | |
| 833 * Close all existing memlines and memfiles. | |
| 834 * Only used when exiting. | |
| 835 * When 'del_file' is TRUE, delete the memfiles. | |
| 165 | 836 * But don't delete files that were ":preserve"d when we are POSIX compatible. |
| 7 | 837 */ |
| 838 void | |
| 839 ml_close_all(del_file) | |
| 840 int del_file; | |
| 841 { | |
| 842 buf_T *buf; | |
| 843 | |
| 844 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
| 165 | 845 ml_close(buf, del_file && ((buf->b_flags & BF_PRESERVED) == 0 |
| 846 || vim_strchr(p_cpo, CPO_PRESERVE) == NULL)); | |
| 7 | 847 #ifdef TEMPDIRNAMES |
| 848 vim_deltempdir(); /* delete created temp directory */ | |
| 849 #endif | |
| 850 } | |
| 851 | |
| 852 /* | |
| 853 * Close all memfiles for not modified buffers. | |
| 854 * Only use just before exiting! | |
| 855 */ | |
| 856 void | |
| 857 ml_close_notmod() | |
| 858 { | |
| 859 buf_T *buf; | |
| 860 | |
| 861 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
| 862 if (!bufIsChanged(buf)) | |
| 863 ml_close(buf, TRUE); /* close all not-modified buffers */ | |
| 864 } | |
| 865 | |
| 866 /* | |
| 867 * Update the timestamp in the .swp file. | |
| 868 * Used when the file has been written. | |
| 869 */ | |
| 870 void | |
| 871 ml_timestamp(buf) | |
| 872 buf_T *buf; | |
| 873 { | |
| 2267 | 874 ml_upd_block0(buf, UB_FNAME); |
| 875 } | |
| 876 | |
| 877 /* | |
| 878 * Return FAIL when the ID of "b0p" is wrong. | |
| 879 */ | |
| 880 static int | |
| 881 ml_check_b0_id(b0p) | |
| 882 ZERO_BL *b0p; | |
| 883 { | |
| 884 if (b0p->b0_id[0] != BLOCK0_ID0 | |
| 885 || (b0p->b0_id[1] != BLOCK0_ID1 | |
| 886 && b0p->b0_id[1] != BLOCK0_ID1_C0 | |
| 887 && b0p->b0_id[1] != BLOCK0_ID1_C1) | |
| 888 ) | |
| 889 return FAIL; | |
| 890 return OK; | |
| 39 | 891 } |
| 892 | |
| 893 /* | |
| 894 * Update the timestamp or the B0_SAME_DIR flag of the .swp file. | |
| 895 */ | |
| 896 static void | |
| 2267 | 897 ml_upd_block0(buf, what) |
| 39 | 898 buf_T *buf; |
| 2267 | 899 upd_block0_T what; |
| 39 | 900 { |
| 7 | 901 memfile_T *mfp; |
| 902 bhdr_T *hp; | |
| 903 ZERO_BL *b0p; | |
| 904 | |
| 905 mfp = buf->b_ml.ml_mfp; | |
| 906 if (mfp == NULL || (hp = mf_get(mfp, (blocknr_T)0, 1)) == NULL) | |
| 907 return; | |
| 908 b0p = (ZERO_BL *)(hp->bh_data); | |
| 2267 | 909 if (ml_check_b0_id(b0p) == FAIL) |
| 39 | 910 EMSG(_("E304: ml_upd_block0(): Didn't get block 0??")); |
| 7 | 911 else |
| 39 | 912 { |
| 2267 | 913 if (what == UB_FNAME) |
| 39 | 914 set_b0_fname(b0p, buf); |
| 2267 | 915 #ifdef FEAT_CRYPT |
| 916 else if (what == UB_CRYPT) | |
| 917 ml_set_b0_crypt(buf, b0p); | |
| 918 #endif | |
| 919 else /* what == UB_SAME_DIR */ | |
| 39 | 920 set_b0_dir_flag(b0p, buf); |
| 921 } | |
| 7 | 922 mf_put(mfp, hp, TRUE, FALSE); |
| 923 } | |
| 924 | |
| 925 /* | |
| 926 * Write file name and timestamp into block 0 of a swap file. | |
| 927 * Also set buf->b_mtime. | |
| 928 * Don't use NameBuff[]!!! | |
| 929 */ | |
| 930 static void | |
| 931 set_b0_fname(b0p, buf) | |
| 932 ZERO_BL *b0p; | |
| 933 buf_T *buf; | |
| 934 { | |
| 935 struct stat st; | |
| 936 | |
| 937 if (buf->b_ffname == NULL) | |
| 938 b0p->b0_fname[0] = NUL; | |
| 939 else | |
| 940 { | |
| 941 #if defined(MSDOS) || defined(MSWIN) || defined(AMIGA) || defined(RISCOS) | |
| 39 | 942 /* Systems that cannot translate "~user" back into a path: copy the |
| 943 * file name unmodified. Do use slashes instead of backslashes for | |
| 944 * portability. */ | |
| 2267 | 945 vim_strncpy(b0p->b0_fname, buf->b_ffname, B0_FNAME_SIZE_CRYPT - 1); |
| 39 | 946 # ifdef BACKSLASH_IN_FILENAME |
| 947 forward_slash(b0p->b0_fname); | |
| 948 # endif | |
| 7 | 949 #else |
| 950 size_t flen, ulen; | |
| 951 char_u uname[B0_UNAME_SIZE]; | |
| 952 | |
| 953 /* | |
| 954 * For a file under the home directory of the current user, we try to | |
| 955 * replace the home directory path with "~user". This helps when | |
| 956 * editing the same file on different machines over a network. | |
| 957 * First replace home dir path with "~/" with home_replace(). | |
| 958 * Then insert the user name to get "~user/". | |
| 959 */ | |
| 2267 | 960 home_replace(NULL, buf->b_ffname, b0p->b0_fname, |
| 961 B0_FNAME_SIZE_CRYPT, TRUE); | |
| 7 | 962 if (b0p->b0_fname[0] == '~') |
| 963 { | |
| 964 flen = STRLEN(b0p->b0_fname); | |
| 965 /* If there is no user name or it is too long, don't use "~/" */ | |
| 966 if (get_user_name(uname, B0_UNAME_SIZE) == FAIL | |
| 2267 | 967 || (ulen = STRLEN(uname)) + flen > B0_FNAME_SIZE_CRYPT - 1) |
| 968 vim_strncpy(b0p->b0_fname, buf->b_ffname, | |
| 969 B0_FNAME_SIZE_CRYPT - 1); | |
| 7 | 970 else |
| 971 { | |
| 972 mch_memmove(b0p->b0_fname + ulen + 1, b0p->b0_fname + 1, flen); | |
| 973 mch_memmove(b0p->b0_fname + 1, uname, ulen); | |
| 974 } | |
| 975 } | |
| 976 #endif | |
| 977 if (mch_stat((char *)buf->b_ffname, &st) >= 0) | |
| 978 { | |
| 979 long_to_char((long)st.st_mtime, b0p->b0_mtime); | |
| 980 #ifdef CHECK_INODE | |
| 981 long_to_char((long)st.st_ino, b0p->b0_ino); | |
| 982 #endif | |
| 983 buf_store_time(buf, &st, buf->b_ffname); | |
| 984 buf->b_mtime_read = buf->b_mtime; | |
| 985 } | |
| 986 else | |
| 987 { | |
| 988 long_to_char(0L, b0p->b0_mtime); | |
| 989 #ifdef CHECK_INODE | |
| 990 long_to_char(0L, b0p->b0_ino); | |
| 991 #endif | |
| 992 buf->b_mtime = 0; | |
| 993 buf->b_mtime_read = 0; | |
| 994 buf->b_orig_size = 0; | |
| 995 buf->b_orig_mode = 0; | |
| 996 } | |
| 997 } | |
| 39 | 998 |
| 999 #ifdef FEAT_MBYTE | |
| 1000 /* Also add the 'fileencoding' if there is room. */ | |
| 1001 add_b0_fenc(b0p, curbuf); | |
| 1002 #endif | |
| 7 | 1003 } |
| 1004 | |
| 1005 /* | |
| 39 | 1006 * Update the B0_SAME_DIR flag of the swap file. It's set if the file and the |
| 1007 * swapfile for "buf" are in the same directory. | |
| 1008 * This is fail safe: if we are not sure the directories are equal the flag is | |
| 1009 * not set. | |
| 1010 */ | |
| 1011 static void | |
| 1012 set_b0_dir_flag(b0p, buf) | |
| 1013 ZERO_BL *b0p; | |
| 1014 buf_T *buf; | |
| 1015 { | |
| 1016 if (same_directory(buf->b_ml.ml_mfp->mf_fname, buf->b_ffname)) | |
| 1017 b0p->b0_flags |= B0_SAME_DIR; | |
| 1018 else | |
| 1019 b0p->b0_flags &= ~B0_SAME_DIR; | |
| 1020 } | |
| 1021 | |
| 1022 #ifdef FEAT_MBYTE | |
| 1023 /* | |
| 1024 * When there is room, add the 'fileencoding' to block zero. | |
| 1025 */ | |
| 1026 static void | |
| 1027 add_b0_fenc(b0p, buf) | |
| 1028 ZERO_BL *b0p; | |
| 1029 buf_T *buf; | |
| 1030 { | |
| 1031 int n; | |
| 2267 | 1032 int size = B0_FNAME_SIZE_NOCRYPT; |
| 1033 | |
| 1034 # ifdef FEAT_CRYPT | |
| 1035 /* Without encryption use the same offset as in Vim 7.2 to be compatible. | |
| 1036 * With encryption it's OK to move elsewhere, the swap file is not | |
| 1037 * compatible anyway. */ | |
| 1038 if (*buf->b_p_key != NUL) | |
| 1039 size = B0_FNAME_SIZE_CRYPT; | |
| 1040 # endif | |
| 39 | 1041 |
| 835 | 1042 n = (int)STRLEN(buf->b_p_fenc); |
| 2267 | 1043 if ((int)STRLEN(b0p->b0_fname) + n + 1 > size) |
| 39 | 1044 b0p->b0_flags &= ~B0_HAS_FENC; |
| 1045 else | |
| 1046 { | |
| 2267 | 1047 mch_memmove((char *)b0p->b0_fname + size - n, |
| 39 | 1048 (char *)buf->b_p_fenc, (size_t)n); |
| 2267 | 1049 *(b0p->b0_fname + size - n - 1) = NUL; |
| 39 | 1050 b0p->b0_flags |= B0_HAS_FENC; |
| 1051 } | |
| 1052 } | |
| 1053 #endif | |
| 1054 | |
| 1055 | |
| 1056 /* | |
| 2267 | 1057 * Try to recover curbuf from the .swp file. |
| 7 | 1058 */ |
| 1059 void | |
| 1060 ml_recover() | |
| 1061 { | |
| 1062 buf_T *buf = NULL; | |
| 1063 memfile_T *mfp = NULL; | |
| 1064 char_u *fname; | |
| 2267 | 1065 char_u *fname_used = NULL; |
| 7 | 1066 bhdr_T *hp = NULL; |
| 1067 ZERO_BL *b0p; | |
| 39 | 1068 int b0_ff; |
| 1069 char_u *b0_fenc = NULL; | |
| 2267 | 1070 #ifdef FEAT_CRYPT |
| 1071 int b0_cm = -1; | |
| 1072 #endif | |
| 7 | 1073 PTR_BL *pp; |
| 1074 DATA_BL *dp; | |
| 1075 infoptr_T *ip; | |
| 1076 blocknr_T bnum; | |
| 1077 int page_count; | |
| 1078 struct stat org_stat, swp_stat; | |
| 1079 int len; | |
| 1080 int directly; | |
| 1081 linenr_T lnum; | |
| 1082 char_u *p; | |
| 1083 int i; | |
| 1084 long error; | |
| 1085 int cannot_open; | |
| 1086 linenr_T line_count; | |
| 1087 int has_error; | |
| 1088 int idx; | |
| 1089 int top; | |
| 1090 int txt_start; | |
| 1091 off_t size; | |
| 1092 int called_from_main; | |
| 1093 int serious_error = TRUE; | |
| 1094 long mtime; | |
| 1095 int attr; | |
|
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After recovery check if the text changed. If it did mark the buffer as
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diff
changeset
|
1096 int orig_file_status = NOTDONE; |
| 7 | 1097 |
| 1098 recoverymode = TRUE; | |
| 1099 called_from_main = (curbuf->b_ml.ml_mfp == NULL); | |
| 1100 attr = hl_attr(HLF_E); | |
| 1975 | 1101 |
| 1102 /* | |
| 1103 * If the file name ends in ".s[uvw][a-z]" we assume this is the swap file. | |
| 1104 * Otherwise a search is done to find the swap file(s). | |
| 1105 */ | |
| 7 | 1106 fname = curbuf->b_fname; |
| 1107 if (fname == NULL) /* When there is no file name */ | |
| 1108 fname = (char_u *)""; | |
| 1109 len = (int)STRLEN(fname); | |
| 1110 if (len >= 4 && | |
| 1111 #if defined(VMS) || defined(RISCOS) | |
| 1975 | 1112 STRNICMP(fname + len - 4, "_s" , 2) |
| 7 | 1113 #else |
| 1975 | 1114 STRNICMP(fname + len - 4, ".s" , 2) |
| 7 | 1115 #endif |
| 1975 | 1116 == 0 |
| 1117 && vim_strchr((char_u *)"UVWuvw", fname[len - 2]) != NULL | |
| 1118 && ASCII_ISALPHA(fname[len - 1])) | |
| 7 | 1119 { |
| 1120 directly = TRUE; | |
| 2267 | 1121 fname_used = vim_strsave(fname); /* make a copy for mf_open() */ |
| 7 | 1122 } |
| 1123 else | |
| 1124 { | |
| 1125 directly = FALSE; | |
| 1126 | |
| 1127 /* count the number of matching swap files */ | |
| 2267 | 1128 len = recover_names(fname, FALSE, 0, NULL); |
| 7 | 1129 if (len == 0) /* no swap files found */ |
| 1130 { | |
| 1131 EMSG2(_("E305: No swap file found for %s"), fname); | |
| 1132 goto theend; | |
| 1133 } | |
| 1134 if (len == 1) /* one swap file found, use it */ | |
| 1135 i = 1; | |
| 1136 else /* several swap files found, choose */ | |
| 1137 { | |
| 1138 /* list the names of the swap files */ | |
| 2267 | 1139 (void)recover_names(fname, TRUE, 0, NULL); |
| 7 | 1140 msg_putchar('\n'); |
| 1141 MSG_PUTS(_("Enter number of swap file to use (0 to quit): ")); | |
| 374 | 1142 i = get_number(FALSE, NULL); |
| 7 | 1143 if (i < 1 || i > len) |
| 1144 goto theend; | |
| 1145 } | |
| 1146 /* get the swap file name that will be used */ | |
| 2267 | 1147 (void)recover_names(fname, FALSE, i, &fname_used); |
| 7 | 1148 } |
| 2267 | 1149 if (fname_used == NULL) |
| 7 | 1150 goto theend; /* out of memory */ |
| 1151 | |
| 1152 /* When called from main() still need to initialize storage structure */ | |
| 625 | 1153 if (called_from_main && ml_open(curbuf) == FAIL) |
| 7 | 1154 getout(1); |
| 1155 | |
| 2267 | 1156 /* |
| 1157 * Allocate a buffer structure for the swap file that is used for recovery. | |
|
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2394
diff
changeset
|
1158 * Only the memline and crypt information in it are really used. |
| 2267 | 1159 */ |
| 7 | 1160 buf = (buf_T *)alloc((unsigned)sizeof(buf_T)); |
| 1161 if (buf == NULL) | |
| 1162 goto theend; | |
| 2267 | 1163 |
| 1164 /* | |
| 1165 * init fields in memline struct | |
| 1166 */ | |
| 7 | 1167 buf->b_ml.ml_stack_size = 0; /* no stack yet */ |
| 1168 buf->b_ml.ml_stack = NULL; /* no stack yet */ | |
| 1169 buf->b_ml.ml_stack_top = 0; /* nothing in the stack */ | |
| 1170 buf->b_ml.ml_line_lnum = 0; /* no cached line */ | |
| 1171 buf->b_ml.ml_locked = NULL; /* no locked block */ | |
| 1172 buf->b_ml.ml_flags = 0; | |
| 1173 | |
| 2267 | 1174 /* |
| 1175 * open the memfile from the old swap file | |
| 1176 */ | |
| 1177 p = vim_strsave(fname_used); /* save "fname_used" for the message: | |
| 1178 mf_open() will consume "fname_used"! */ | |
| 1179 mfp = mf_open(fname_used, O_RDONLY); | |
| 1180 fname_used = p; | |
| 7 | 1181 if (mfp == NULL || mfp->mf_fd < 0) |
| 1182 { | |
| 2267 | 1183 if (fname_used != NULL) |
| 1184 EMSG2(_("E306: Cannot open %s"), fname_used); | |
| 7 | 1185 goto theend; |
| 1186 } | |
| 1187 buf->b_ml.ml_mfp = mfp; | |
| 2267 | 1188 #ifdef FEAT_CRYPT |
| 1189 mfp->mf_buffer = buf; | |
| 1190 buf->b_p_key = empty_option; | |
|
2407
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Fix memory access to 'cryptmethod' during recovery. (Dominique Pelle)
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parents:
2394
diff
changeset
|
1191 buf->b_p_cm = empty_option; |
| 2267 | 1192 #endif |
| 7 | 1193 |
| 1194 /* | |
| 1195 * The page size set in mf_open() might be different from the page size | |
| 1196 * used in the swap file, we must get it from block 0. But to read block | |
| 1197 * 0 we need a page size. Use the minimal size for block 0 here, it will | |
| 1198 * be set to the real value below. | |
| 1199 */ | |
| 1200 mfp->mf_page_size = MIN_SWAP_PAGE_SIZE; | |
| 1201 | |
| 2267 | 1202 /* |
| 1203 * try to read block 0 | |
| 1204 */ | |
| 7 | 1205 if ((hp = mf_get(mfp, (blocknr_T)0, 1)) == NULL) |
| 1206 { | |
| 1207 msg_start(); | |
| 1208 MSG_PUTS_ATTR(_("Unable to read block 0 from "), attr | MSG_HIST); | |
| 1209 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST); | |
| 2267 | 1210 MSG_PUTS_ATTR(_("\nMaybe no changes were made or Vim did not update the swap file."), |
| 7 | 1211 attr | MSG_HIST); |
| 1212 msg_end(); | |
| 1213 goto theend; | |
| 1214 } | |
| 1215 b0p = (ZERO_BL *)(hp->bh_data); | |
| 1216 if (STRNCMP(b0p->b0_version, "VIM 3.0", 7) == 0) | |
| 1217 { | |
| 1218 msg_start(); | |
| 1219 msg_outtrans_attr(mfp->mf_fname, MSG_HIST); | |
| 1220 MSG_PUTS_ATTR(_(" cannot be used with this version of Vim.\n"), | |
| 1221 MSG_HIST); | |
| 1222 MSG_PUTS_ATTR(_("Use Vim version 3.0.\n"), MSG_HIST); | |
| 1223 msg_end(); | |
| 1224 goto theend; | |
| 1225 } | |
| 2267 | 1226 if (ml_check_b0_id(b0p) == FAIL) |
| 7 | 1227 { |
| 1228 EMSG2(_("E307: %s does not look like a Vim swap file"), mfp->mf_fname); | |
| 1229 goto theend; | |
| 1230 } | |
| 1231 if (b0_magic_wrong(b0p)) | |
| 1232 { | |
| 1233 msg_start(); | |
| 1234 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST); | |
| 1235 #if defined(MSDOS) || defined(MSWIN) | |
| 1236 if (STRNCMP(b0p->b0_hname, "PC ", 3) == 0) | |
| 1237 MSG_PUTS_ATTR(_(" cannot be used with this version of Vim.\n"), | |
| 1238 attr | MSG_HIST); | |
| 1239 else | |
| 1240 #endif | |
| 1241 MSG_PUTS_ATTR(_(" cannot be used on this computer.\n"), | |
| 1242 attr | MSG_HIST); | |
| 1243 MSG_PUTS_ATTR(_("The file was created on "), attr | MSG_HIST); | |
|
2273
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Fix a memory leak in encryption. (Dominique Pelle)
Bram Moolenaar <bram@vim.org>
parents:
2272
diff
changeset
|
1244 /* avoid going past the end of a corrupted hostname */ |
| 7 | 1245 b0p->b0_fname[0] = NUL; |
| 1246 MSG_PUTS_ATTR(b0p->b0_hname, attr | MSG_HIST); | |
| 1247 MSG_PUTS_ATTR(_(",\nor the file has been damaged."), attr | MSG_HIST); | |
| 1248 msg_end(); | |
| 1249 goto theend; | |
| 1250 } | |
| 1105 | 1251 |
| 2267 | 1252 #ifdef FEAT_CRYPT |
| 1253 if (b0p->b0_id[1] == BLOCK0_ID1_C0) | |
|
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Change 'cryptmethod' from a number to a string option. Make it global-local.
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2283
diff
changeset
|
1254 b0_cm = 0; |
| 2267 | 1255 else if (b0p->b0_id[1] == BLOCK0_ID1_C1) |
| 1256 { | |
|
2360
d8e4b27cef80
Change 'cryptmethod' from a number to a string option. Make it global-local.
Bram Moolenaar <bram@vim.org>
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diff
changeset
|
1257 b0_cm = 1; |
| 2267 | 1258 mch_memmove(mfp->mf_seed, &b0p->b0_seed, MF_SEED_LEN); |
| 1259 } | |
|
2360
d8e4b27cef80
Change 'cryptmethod' from a number to a string option. Make it global-local.
Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
1260 set_crypt_method(buf, b0_cm); |
| 2267 | 1261 #else |
| 1262 if (b0p->b0_id[1] != BLOCK0_ID1) | |
| 1263 { | |
|
2283
7e1bd501306d
Mainly documentation updates.
Bram Moolenaar <bram@vim.org>
parents:
2273
diff
changeset
|
1264 EMSG2(_("E833: %s is encrypted and this version of Vim does not support encryption"), mfp->mf_fname); |
| 2267 | 1265 goto theend; |
| 1266 } | |
| 1267 #endif | |
| 1268 | |
| 7 | 1269 /* |
| 1270 * If we guessed the wrong page size, we have to recalculate the | |
| 1271 * highest block number in the file. | |
| 1272 */ | |
| 1273 if (mfp->mf_page_size != (unsigned)char_to_long(b0p->b0_page_size)) | |
| 1274 { | |
| 1105 | 1275 unsigned previous_page_size = mfp->mf_page_size; |
| 1276 | |
| 7 | 1277 mf_new_page_size(mfp, (unsigned)char_to_long(b0p->b0_page_size)); |
| 1105 | 1278 if (mfp->mf_page_size < previous_page_size) |
| 1279 { | |
| 1280 msg_start(); | |
| 1281 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST); | |
| 1282 MSG_PUTS_ATTR(_(" has been damaged (page size is smaller than minimum value).\n"), | |
| 1283 attr | MSG_HIST); | |
| 1284 msg_end(); | |
| 1285 goto theend; | |
| 1286 } | |
| 7 | 1287 if ((size = lseek(mfp->mf_fd, (off_t)0L, SEEK_END)) <= 0) |
| 1288 mfp->mf_blocknr_max = 0; /* no file or empty file */ | |
| 1289 else | |
| 1290 mfp->mf_blocknr_max = (blocknr_T)(size / mfp->mf_page_size); | |
| 1291 mfp->mf_infile_count = mfp->mf_blocknr_max; | |
| 1105 | 1292 |
| 1293 /* need to reallocate the memory used to store the data */ | |
| 1294 p = alloc(mfp->mf_page_size); | |
| 1295 if (p == NULL) | |
| 1296 goto theend; | |
| 1297 mch_memmove(p, hp->bh_data, previous_page_size); | |
| 1298 vim_free(hp->bh_data); | |
| 1299 hp->bh_data = p; | |
| 1300 b0p = (ZERO_BL *)(hp->bh_data); | |
| 7 | 1301 } |
| 1302 | |
| 2267 | 1303 /* |
| 1304 * If .swp file name given directly, use name from swap file for buffer. | |
| 1305 */ | |
| 7 | 1306 if (directly) |
| 1307 { | |
| 1308 expand_env(b0p->b0_fname, NameBuff, MAXPATHL); | |
| 1309 if (setfname(curbuf, NameBuff, NULL, TRUE) == FAIL) | |
| 1310 goto theend; | |
| 1311 } | |
| 1312 | |
| 1313 home_replace(NULL, mfp->mf_fname, NameBuff, MAXPATHL, TRUE); | |
| 274 | 1314 smsg((char_u *)_("Using swap file \"%s\""), NameBuff); |
| 7 | 1315 |
| 1316 if (buf_spname(curbuf) != NULL) | |
| 1317 STRCPY(NameBuff, buf_spname(curbuf)); | |
| 1318 else | |
| 1319 home_replace(NULL, curbuf->b_ffname, NameBuff, MAXPATHL, TRUE); | |
| 274 | 1320 smsg((char_u *)_("Original file \"%s\""), NameBuff); |
| 7 | 1321 msg_putchar('\n'); |
| 1322 | |
| 2267 | 1323 /* |
| 1324 * check date of swap file and original file | |
| 1325 */ | |
| 7 | 1326 mtime = char_to_long(b0p->b0_mtime); |
| 1327 if (curbuf->b_ffname != NULL | |
| 1328 && mch_stat((char *)curbuf->b_ffname, &org_stat) != -1 | |
| 1329 && ((mch_stat((char *)mfp->mf_fname, &swp_stat) != -1 | |
| 1330 && org_stat.st_mtime > swp_stat.st_mtime) | |
| 1331 || org_stat.st_mtime != mtime)) | |
| 1332 { | |
| 1333 EMSG(_("E308: Warning: Original file may have been changed")); | |
| 1334 } | |
| 1335 out_flush(); | |
| 39 | 1336 |
| 1337 /* Get the 'fileformat' and 'fileencoding' from block zero. */ | |
| 1338 b0_ff = (b0p->b0_flags & B0_FF_MASK); | |
| 1339 if (b0p->b0_flags & B0_HAS_FENC) | |
| 1340 { | |
|
2271
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Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2267
diff
changeset
|
1341 int fnsize = B0_FNAME_SIZE_NOCRYPT; |
| 2267 | 1342 |
| 1343 #ifdef FEAT_CRYPT | |
| 1344 /* Use the same size as in add_b0_fenc(). */ | |
| 1345 if (b0p->b0_id[1] != BLOCK0_ID1) | |
|
2271
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Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2267
diff
changeset
|
1346 fnsize = B0_FNAME_SIZE_CRYPT; |
| 2267 | 1347 #endif |
|
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2267
diff
changeset
|
1348 for (p = b0p->b0_fname + fnsize; p > b0p->b0_fname && p[-1] != NUL; --p) |
| 39 | 1349 ; |
|
2271
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Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2267
diff
changeset
|
1350 b0_fenc = vim_strnsave(p, (int)(b0p->b0_fname + fnsize - p)); |
| 39 | 1351 } |
| 1352 | |
| 7 | 1353 mf_put(mfp, hp, FALSE, FALSE); /* release block 0 */ |
| 1354 hp = NULL; | |
| 1355 | |
| 1356 /* | |
| 1357 * Now that we are sure that the file is going to be recovered, clear the | |
| 1358 * contents of the current buffer. | |
| 1359 */ | |
| 1360 while (!(curbuf->b_ml.ml_flags & ML_EMPTY)) | |
| 1361 ml_delete((linenr_T)1, FALSE); | |
| 1362 | |
| 1363 /* | |
| 1364 * Try reading the original file to obtain the values of 'fileformat', | |
| 1365 * 'fileencoding', etc. Ignore errors. The text itself is not used. | |
| 2267 | 1366 * When the file is encrypted the user is asked to enter the key. |
| 7 | 1367 */ |
| 1368 if (curbuf->b_ffname != NULL) | |
|
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After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
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diff
changeset
|
1369 orig_file_status = readfile(curbuf->b_ffname, NULL, (linenr_T)0, |
| 7 | 1370 (linenr_T)0, (linenr_T)MAXLNUM, NULL, READ_NEW); |
| 1371 | |
| 2267 | 1372 #ifdef FEAT_CRYPT |
| 1373 if (b0_cm >= 0) | |
| 1374 { | |
| 1375 /* Need to ask the user for the crypt key. If this fails we continue | |
| 1376 * without a key, will probably get garbage text. */ | |
| 1377 if (*curbuf->b_p_key != NUL) | |
| 1378 { | |
| 1379 smsg((char_u *)_("Swap file is encrypted: \"%s\""), fname_used); | |
| 1380 MSG_PUTS(_("\nIf you entered a new crypt key but did not write the text file,")); | |
| 1381 MSG_PUTS(_("\nenter the new crypt key.")); | |
| 1382 MSG_PUTS(_("\nIf you wrote the text file after changing the crypt key press enter")); | |
| 1383 MSG_PUTS(_("\nto use the same key for text file and swap file")); | |
| 1384 } | |
| 1385 else | |
| 1386 smsg((char_u *)_(need_key_msg), fname_used); | |
| 1387 buf->b_p_key = get_crypt_key(FALSE, FALSE); | |
| 1388 if (buf->b_p_key == NULL) | |
| 1389 buf->b_p_key = curbuf->b_p_key; | |
| 1390 else if (*buf->b_p_key == NUL) | |
| 1391 { | |
| 1392 vim_free(buf->b_p_key); | |
| 1393 buf->b_p_key = curbuf->b_p_key; | |
| 1394 } | |
| 1395 if (buf->b_p_key == NULL) | |
| 1396 buf->b_p_key = empty_option; | |
| 1397 } | |
| 1398 #endif | |
| 1399 | |
| 39 | 1400 /* Use the 'fileformat' and 'fileencoding' as stored in the swap file. */ |
| 1401 if (b0_ff != 0) | |
| 1402 set_fileformat(b0_ff - 1, OPT_LOCAL); | |
| 1403 if (b0_fenc != NULL) | |
| 1404 { | |
| 1405 set_option_value((char_u *)"fenc", 0L, b0_fenc, OPT_LOCAL); | |
| 1406 vim_free(b0_fenc); | |
| 1407 } | |
| 1408 unchanged(curbuf, TRUE); | |
| 1409 | |
| 7 | 1410 bnum = 1; /* start with block 1 */ |
| 1411 page_count = 1; /* which is 1 page */ | |
| 1412 lnum = 0; /* append after line 0 in curbuf */ | |
| 1413 line_count = 0; | |
| 1414 idx = 0; /* start with first index in block 1 */ | |
| 1415 error = 0; | |
| 1416 buf->b_ml.ml_stack_top = 0; | |
| 1417 buf->b_ml.ml_stack = NULL; | |
| 1418 buf->b_ml.ml_stack_size = 0; /* no stack yet */ | |
| 1419 | |
| 1420 if (curbuf->b_ffname == NULL) | |
| 1421 cannot_open = TRUE; | |
| 1422 else | |
| 1423 cannot_open = FALSE; | |
| 1424 | |
| 1425 serious_error = FALSE; | |
| 1426 for ( ; !got_int; line_breakcheck()) | |
| 1427 { | |
| 1428 if (hp != NULL) | |
| 1429 mf_put(mfp, hp, FALSE, FALSE); /* release previous block */ | |
| 1430 | |
| 1431 /* | |
| 1432 * get block | |
| 1433 */ | |
| 1434 if ((hp = mf_get(mfp, (blocknr_T)bnum, page_count)) == NULL) | |
| 1435 { | |
| 1436 if (bnum == 1) | |
| 1437 { | |
| 1438 EMSG2(_("E309: Unable to read block 1 from %s"), mfp->mf_fname); | |
| 1439 goto theend; | |
| 1440 } | |
| 1441 ++error; | |
| 1442 ml_append(lnum++, (char_u *)_("???MANY LINES MISSING"), | |
| 1443 (colnr_T)0, TRUE); | |
| 1444 } | |
| 1445 else /* there is a block */ | |
| 1446 { | |
| 1447 pp = (PTR_BL *)(hp->bh_data); | |
| 1448 if (pp->pb_id == PTR_ID) /* it is a pointer block */ | |
| 1449 { | |
| 1450 /* check line count when using pointer block first time */ | |
| 1451 if (idx == 0 && line_count != 0) | |
| 1452 { | |
| 1453 for (i = 0; i < (int)pp->pb_count; ++i) | |
| 1454 line_count -= pp->pb_pointer[i].pe_line_count; | |
| 1455 if (line_count != 0) | |
| 1456 { | |
| 1457 ++error; | |
| 1458 ml_append(lnum++, (char_u *)_("???LINE COUNT WRONG"), | |
| 1459 (colnr_T)0, TRUE); | |
| 1460 } | |
| 1461 } | |
| 1462 | |
| 1463 if (pp->pb_count == 0) | |
| 1464 { | |
| 1465 ml_append(lnum++, (char_u *)_("???EMPTY BLOCK"), | |
| 1466 (colnr_T)0, TRUE); | |
| 1467 ++error; | |
| 1468 } | |
| 1469 else if (idx < (int)pp->pb_count) /* go a block deeper */ | |
| 1470 { | |
| 1471 if (pp->pb_pointer[idx].pe_bnum < 0) | |
| 1472 { | |
| 1473 /* | |
| 1474 * Data block with negative block number. | |
| 1475 * Try to read lines from the original file. | |
| 1476 * This is slow, but it works. | |
| 1477 */ | |
| 1478 if (!cannot_open) | |
| 1479 { | |
| 1480 line_count = pp->pb_pointer[idx].pe_line_count; | |
| 1481 if (readfile(curbuf->b_ffname, NULL, lnum, | |
| 1482 pp->pb_pointer[idx].pe_old_lnum - 1, | |
| 1483 line_count, NULL, 0) == FAIL) | |
| 1484 cannot_open = TRUE; | |
| 1485 else | |
| 1486 lnum += line_count; | |
| 1487 } | |
| 1488 if (cannot_open) | |
| 1489 { | |
| 1490 ++error; | |
| 1491 ml_append(lnum++, (char_u *)_("???LINES MISSING"), | |
| 1492 (colnr_T)0, TRUE); | |
| 1493 } | |
| 1494 ++idx; /* get same block again for next index */ | |
| 1495 continue; | |
| 1496 } | |
| 1497 | |
| 1498 /* | |
| 1499 * going one block deeper in the tree | |
| 1500 */ | |
| 1501 if ((top = ml_add_stack(buf)) < 0) /* new entry in stack */ | |
| 1502 { | |
| 1503 ++error; | |
| 1504 break; /* out of memory */ | |
| 1505 } | |
| 1506 ip = &(buf->b_ml.ml_stack[top]); | |
| 1507 ip->ip_bnum = bnum; | |
| 1508 ip->ip_index = idx; | |
| 1509 | |
| 1510 bnum = pp->pb_pointer[idx].pe_bnum; | |
| 1511 line_count = pp->pb_pointer[idx].pe_line_count; | |
| 1512 page_count = pp->pb_pointer[idx].pe_page_count; | |
| 1513 continue; | |
| 1514 } | |
| 1515 } | |
| 1516 else /* not a pointer block */ | |
| 1517 { | |
| 1518 dp = (DATA_BL *)(hp->bh_data); | |
| 1519 if (dp->db_id != DATA_ID) /* block id wrong */ | |
| 1520 { | |
| 1521 if (bnum == 1) | |
| 1522 { | |
| 1523 EMSG2(_("E310: Block 1 ID wrong (%s not a .swp file?)"), | |
| 1524 mfp->mf_fname); | |
| 1525 goto theend; | |
| 1526 } | |
| 1527 ++error; | |
| 1528 ml_append(lnum++, (char_u *)_("???BLOCK MISSING"), | |
| 1529 (colnr_T)0, TRUE); | |
| 1530 } | |
| 1531 else | |
| 1532 { | |
| 1533 /* | |
| 1534 * it is a data block | |
| 1535 * Append all the lines in this block | |
| 1536 */ | |
| 1537 has_error = FALSE; | |
| 1538 /* | |
| 1539 * check length of block | |
| 1540 * if wrong, use length in pointer block | |
| 1541 */ | |
| 1542 if (page_count * mfp->mf_page_size != dp->db_txt_end) | |
| 1543 { | |
| 1544 ml_append(lnum++, (char_u *)_("??? from here until ???END lines may be messed up"), | |
| 1545 (colnr_T)0, TRUE); | |
| 1546 ++error; | |
| 1547 has_error = TRUE; | |
| 1548 dp->db_txt_end = page_count * mfp->mf_page_size; | |
| 1549 } | |
| 1550 | |
| 1551 /* make sure there is a NUL at the end of the block */ | |
| 1552 *((char_u *)dp + dp->db_txt_end - 1) = NUL; | |
| 1553 | |
| 1554 /* | |
| 1555 * check number of lines in block | |
| 1556 * if wrong, use count in data block | |
| 1557 */ | |
| 1558 if (line_count != dp->db_line_count) | |
| 1559 { | |
| 1560 ml_append(lnum++, (char_u *)_("??? from here until ???END lines may have been inserted/deleted"), | |
| 1561 (colnr_T)0, TRUE); | |
| 1562 ++error; | |
| 1563 has_error = TRUE; | |
| 1564 } | |
| 1565 | |
| 1566 for (i = 0; i < dp->db_line_count; ++i) | |
| 1567 { | |
| 1568 txt_start = (dp->db_index[i] & DB_INDEX_MASK); | |
| 1978 | 1569 if (txt_start <= (int)HEADER_SIZE |
| 7 | 1570 || txt_start >= (int)dp->db_txt_end) |
| 1571 { | |
| 1572 p = (char_u *)"???"; | |
| 1573 ++error; | |
| 1574 } | |
| 1575 else | |
| 1576 p = (char_u *)dp + txt_start; | |
| 1577 ml_append(lnum++, p, (colnr_T)0, TRUE); | |
| 1578 } | |
| 1579 if (has_error) | |
| 1978 | 1580 ml_append(lnum++, (char_u *)_("???END"), |
| 1581 (colnr_T)0, TRUE); | |
| 7 | 1582 } |
| 1583 } | |
| 1584 } | |
| 1585 | |
| 1586 if (buf->b_ml.ml_stack_top == 0) /* finished */ | |
| 1587 break; | |
| 1588 | |
| 1589 /* | |
| 1590 * go one block up in the tree | |
| 1591 */ | |
| 1592 ip = &(buf->b_ml.ml_stack[--(buf->b_ml.ml_stack_top)]); | |
| 1593 bnum = ip->ip_bnum; | |
| 1594 idx = ip->ip_index + 1; /* go to next index */ | |
| 1595 page_count = 1; | |
| 1596 } | |
| 1597 | |
| 1598 /* | |
|
2162
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1599 * Compare the buffer contents with the original file. When they differ |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1600 * set the 'modified' flag. |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1601 * Lines 1 - lnum are the new contents. |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1602 * Lines lnum + 1 to ml_line_count are the original contents. |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1603 * Line ml_line_count + 1 in the dummy empty line. |
| 7 | 1604 */ |
|
2162
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1605 if (orig_file_status != OK || curbuf->b_ml.ml_line_count != lnum * 2 + 1) |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1606 { |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1607 /* Recovering an empty file results in two lines and the first line is |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1608 * empty. Don't set the modified flag then. */ |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1609 if (!(curbuf->b_ml.ml_line_count == 2 && *ml_get(1) == NUL)) |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1610 { |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1611 changed_int(); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1612 ++curbuf->b_changedtick; |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1613 } |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1614 } |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1615 else |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1616 { |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1617 for (idx = 1; idx <= lnum; ++idx) |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1618 { |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1619 /* Need to copy one line, fetching the other one may flush it. */ |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1620 p = vim_strsave(ml_get(idx)); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1621 i = STRCMP(p, ml_get(idx + lnum)); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1622 vim_free(p); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1623 if (i != 0) |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1624 { |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1625 changed_int(); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1626 ++curbuf->b_changedtick; |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1627 break; |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1628 } |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1629 } |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1630 } |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1631 |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1632 /* |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1633 * Delete the lines from the original file and the dummy line from the |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1634 * empty buffer. These will now be after the last line in the buffer. |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1635 */ |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1636 while (curbuf->b_ml.ml_line_count > lnum |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1637 && !(curbuf->b_ml.ml_flags & ML_EMPTY)) |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1638 ml_delete(curbuf->b_ml.ml_line_count, FALSE); |
| 7 | 1639 curbuf->b_flags |= BF_RECOVERED; |
| 1640 | |
| 1641 recoverymode = FALSE; | |
| 1642 if (got_int) | |
| 1643 EMSG(_("E311: Recovery Interrupted")); | |
| 1644 else if (error) | |
| 1645 { | |
| 1646 ++no_wait_return; | |
| 1647 MSG(">>>>>>>>>>>>>"); | |
| 1648 EMSG(_("E312: Errors detected while recovering; look for lines starting with ???")); | |
| 1649 --no_wait_return; | |
| 1650 MSG(_("See \":help E312\" for more information.")); | |
| 1651 MSG(">>>>>>>>>>>>>"); | |
| 1652 } | |
| 1653 else | |
| 1654 { | |
|
2162
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1655 if (curbuf->b_changed) |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1656 { |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1657 MSG(_("Recovery completed. You should check if everything is OK.")); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1658 MSG_PUTS(_("\n(You might want to write out this file under another name\n")); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1659 MSG_PUTS(_("and run diff with the original file to check for changes)")); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1660 } |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1661 else |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1662 MSG(_("Recovery completed. Buffer contents equals file contents.")); |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1663 MSG_PUTS(_("\nYou may want to delete the .swp file now.\n\n")); |
| 7 | 1664 cmdline_row = msg_row; |
| 1665 } | |
| 2267 | 1666 #ifdef FEAT_CRYPT |
| 1667 if (*buf->b_p_key != NUL && STRCMP(curbuf->b_p_key, buf->b_p_key) != 0) | |
| 1668 { | |
| 1669 MSG_PUTS(_("Using crypt key from swap file for the text file.\n")); | |
| 1670 set_option_value((char_u *)"key", 0L, buf->b_p_key, OPT_LOCAL); | |
| 1671 } | |
| 1672 #endif | |
| 7 | 1673 redraw_curbuf_later(NOT_VALID); |
| 1674 | |
| 1675 theend: | |
| 2267 | 1676 vim_free(fname_used); |
| 7 | 1677 recoverymode = FALSE; |
| 1678 if (mfp != NULL) | |
| 1679 { | |
| 1680 if (hp != NULL) | |
| 1681 mf_put(mfp, hp, FALSE, FALSE); | |
| 1682 mf_close(mfp, FALSE); /* will also vim_free(mfp->mf_fname) */ | |
| 1683 } | |
| 1053 | 1684 if (buf != NULL) |
| 1685 { | |
| 2267 | 1686 #ifdef FEAT_CRYPT |
| 1687 if (buf->b_p_key != curbuf->b_p_key) | |
| 1688 free_string_option(buf->b_p_key); | |
|
2407
6bc102a4bff8
Fix memory access to 'cryptmethod' during recovery. (Dominique Pelle)
Bram Moolenaar <bram@vim.org>
parents:
2394
diff
changeset
|
1689 free_string_option(buf->b_p_cm); |
| 2267 | 1690 #endif |
| 1053 | 1691 vim_free(buf->b_ml.ml_stack); |
| 1692 vim_free(buf); | |
| 1693 } | |
| 7 | 1694 if (serious_error && called_from_main) |
| 1695 ml_close(curbuf, TRUE); | |
| 1696 #ifdef FEAT_AUTOCMD | |
| 1697 else | |
| 1698 { | |
| 1699 apply_autocmds(EVENT_BUFREADPOST, NULL, curbuf->b_fname, FALSE, curbuf); | |
| 1700 apply_autocmds(EVENT_BUFWINENTER, NULL, curbuf->b_fname, FALSE, curbuf); | |
| 1701 } | |
| 1702 #endif | |
| 1703 return; | |
| 1704 } | |
| 1705 | |
| 1706 /* | |
| 1707 * Find the names of swap files in current directory and the directory given | |
| 1708 * with the 'directory' option. | |
| 1709 * | |
| 1710 * Used to: | |
| 1711 * - list the swap files for "vim -r" | |
| 1712 * - count the number of swap files when recovering | |
| 1713 * - list the swap files when recovering | |
| 1714 * - find the name of the n'th swap file when recovering | |
| 1715 */ | |
| 1716 int | |
| 2267 | 1717 recover_names(fname, list, nr, fname_out) |
| 1718 char_u *fname; /* base for swap file name */ | |
| 1719 int list; /* when TRUE, list the swap file names */ | |
| 1720 int nr; /* when non-zero, return nr'th swap file name */ | |
| 1721 char_u **fname_out; /* result when "nr" > 0 */ | |
| 7 | 1722 { |
| 1723 int num_names; | |
| 1724 char_u *(names[6]); | |
| 1725 char_u *tail; | |
| 1726 char_u *p; | |
| 1727 int num_files; | |
| 1728 int file_count = 0; | |
| 1729 char_u **files; | |
| 1730 int i; | |
| 1731 char_u *dirp; | |
| 1732 char_u *dir_name; | |
| 2221 | 1733 char_u *fname_res = NULL; |
|
2145
de0e7ca61893
updated for version 7.2.427
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2108
diff
changeset
|
1734 #ifdef HAVE_READLINK |
|
de0e7ca61893
updated for version 7.2.427
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parents:
2108
diff
changeset
|
1735 char_u fname_buf[MAXPATHL]; |
| 2221 | 1736 #endif |
| 1737 | |
| 1738 if (fname != NULL) | |
| 1739 { | |
| 1740 #ifdef HAVE_READLINK | |
| 2267 | 1741 /* Expand symlink in the file name, because the swap file is created |
| 1742 * with the actual file instead of with the symlink. */ | |
| 1743 if (resolve_symlink(fname, fname_buf) == OK) | |
| 1744 fname_res = fname_buf; | |
| 1745 else | |
|
2145
de0e7ca61893
updated for version 7.2.427
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parents:
2108
diff
changeset
|
1746 #endif |
| 2267 | 1747 fname_res = fname; |
| 2221 | 1748 } |
| 7 | 1749 |
| 1750 if (list) | |
| 1751 { | |
|
2145
de0e7ca61893
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Bram Moolenaar <bram@zimbu.org>
parents:
2108
diff
changeset
|
1752 /* use msg() to start the scrolling properly */ |
| 7 | 1753 msg((char_u *)_("Swap files found:")); |
| 1754 msg_putchar('\n'); | |
| 1755 } | |
| 1756 | |
| 1757 /* | |
| 1758 * Do the loop for every directory in 'directory'. | |
| 1759 * First allocate some memory to put the directory name in. | |
| 1760 */ | |
| 1761 dir_name = alloc((unsigned)STRLEN(p_dir) + 1); | |
| 1762 dirp = p_dir; | |
| 1763 while (dir_name != NULL && *dirp) | |
| 1764 { | |
| 1765 /* | |
| 1766 * Isolate a directory name from *dirp and put it in dir_name (we know | |
| 1767 * it is large enough, so use 31000 for length). | |
| 1768 * Advance dirp to next directory name. | |
| 1769 */ | |
| 1770 (void)copy_option_part(&dirp, dir_name, 31000, ","); | |
| 1771 | |
| 1772 if (dir_name[0] == '.' && dir_name[1] == NUL) /* check current dir */ | |
| 1773 { | |
| 2267 | 1774 if (fname == NULL) |
| 7 | 1775 { |
| 1776 #ifdef VMS | |
| 1777 names[0] = vim_strsave((char_u *)"*_sw%"); | |
| 1778 #else | |
| 1779 # ifdef RISCOS | |
| 1780 names[0] = vim_strsave((char_u *)"*_sw#"); | |
| 1781 # else | |
| 1782 names[0] = vim_strsave((char_u *)"*.sw?"); | |
| 1783 # endif | |
| 1784 #endif | |
| 1005 | 1785 #if defined(UNIX) || defined(WIN3264) |
| 1786 /* For Unix names starting with a dot are special. MS-Windows | |
| 1787 * supports this too, on some file systems. */ | |
| 7 | 1788 names[1] = vim_strsave((char_u *)".*.sw?"); |
| 1789 names[2] = vim_strsave((char_u *)".sw?"); | |
| 1790 num_names = 3; | |
| 1791 #else | |
| 1792 # ifdef VMS | |
| 1793 names[1] = vim_strsave((char_u *)".*_sw%"); | |
| 1794 num_names = 2; | |
| 1795 # else | |
| 1796 num_names = 1; | |
| 1797 # endif | |
| 1798 #endif | |
| 1799 } | |
| 1800 else | |
|
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1801 num_names = recov_file_names(names, fname_res, TRUE); |
| 7 | 1802 } |
| 1803 else /* check directory dir_name */ | |
| 1804 { | |
| 2267 | 1805 if (fname == NULL) |
| 7 | 1806 { |
| 1807 #ifdef VMS | |
| 1808 names[0] = concat_fnames(dir_name, (char_u *)"*_sw%", TRUE); | |
| 1809 #else | |
| 1810 # ifdef RISCOS | |
| 1811 names[0] = concat_fnames(dir_name, (char_u *)"*_sw#", TRUE); | |
| 1812 # else | |
| 1813 names[0] = concat_fnames(dir_name, (char_u *)"*.sw?", TRUE); | |
| 1814 # endif | |
| 1815 #endif | |
| 1005 | 1816 #if defined(UNIX) || defined(WIN3264) |
| 1817 /* For Unix names starting with a dot are special. MS-Windows | |
| 1818 * supports this too, on some file systems. */ | |
| 7 | 1819 names[1] = concat_fnames(dir_name, (char_u *)".*.sw?", TRUE); |
| 1820 names[2] = concat_fnames(dir_name, (char_u *)".sw?", TRUE); | |
| 1821 num_names = 3; | |
| 1822 #else | |
| 1823 # ifdef VMS | |
| 1824 names[1] = concat_fnames(dir_name, (char_u *)".*_sw%", TRUE); | |
| 1825 num_names = 2; | |
| 1826 # else | |
| 1827 num_names = 1; | |
| 1828 # endif | |
| 1829 #endif | |
| 1830 } | |
| 1831 else | |
| 1832 { | |
| 1833 #if defined(UNIX) || defined(WIN3264) | |
| 1834 p = dir_name + STRLEN(dir_name); | |
| 39 | 1835 if (after_pathsep(dir_name, p) && p[-1] == p[-2]) |
| 7 | 1836 { |
| 1837 /* Ends with '//', Use Full path for swap name */ | |
|
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1838 tail = make_percent_swname(dir_name, fname_res); |
| 7 | 1839 } |
| 1840 else | |
| 1841 #endif | |
| 1842 { | |
|
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1843 tail = gettail(fname_res); |
| 7 | 1844 tail = concat_fnames(dir_name, tail, TRUE); |
| 1845 } | |
| 1846 if (tail == NULL) | |
| 1847 num_names = 0; | |
| 1848 else | |
| 1849 { | |
| 1850 num_names = recov_file_names(names, tail, FALSE); | |
| 1851 vim_free(tail); | |
| 1852 } | |
| 1853 } | |
| 1854 } | |
| 1855 | |
| 1856 /* check for out-of-memory */ | |
| 1857 for (i = 0; i < num_names; ++i) | |
| 1858 { | |
| 1859 if (names[i] == NULL) | |
| 1860 { | |
| 1861 for (i = 0; i < num_names; ++i) | |
| 1862 vim_free(names[i]); | |
| 1863 num_names = 0; | |
| 1864 } | |
| 1865 } | |
| 1866 if (num_names == 0) | |
| 1867 num_files = 0; | |
| 1868 else if (expand_wildcards(num_names, names, &num_files, &files, | |
| 1869 EW_KEEPALL|EW_FILE|EW_SILENT) == FAIL) | |
| 1870 num_files = 0; | |
| 1871 | |
| 1872 /* | |
| 1873 * When no swap file found, wildcard expansion might have failed (e.g. | |
| 1874 * not able to execute the shell). | |
| 1875 * Try finding a swap file by simply adding ".swp" to the file name. | |
| 1876 */ | |
| 2267 | 1877 if (*dirp == NUL && file_count + num_files == 0 && fname != NULL) |
| 7 | 1878 { |
| 1879 struct stat st; | |
| 1880 char_u *swapname; | |
| 1881 | |
|
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1882 swapname = modname(fname_res, |
| 7 | 1883 #if defined(VMS) || defined(RISCOS) |
|
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1884 (char_u *)"_swp", FALSE |
| 7 | 1885 #else |
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1886 (char_u *)".swp", TRUE |
| 7 | 1887 #endif |
|
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1888 ); |
| 7 | 1889 if (swapname != NULL) |
| 1890 { | |
| 1891 if (mch_stat((char *)swapname, &st) != -1) /* It exists! */ | |
| 1892 { | |
| 1893 files = (char_u **)alloc((unsigned)sizeof(char_u *)); | |
| 1894 if (files != NULL) | |
| 1895 { | |
| 1896 files[0] = swapname; | |
| 1897 swapname = NULL; | |
| 1898 num_files = 1; | |
| 1899 } | |
| 1900 } | |
| 1901 vim_free(swapname); | |
| 1902 } | |
| 1903 } | |
| 1904 | |
| 1905 /* | |
| 1906 * remove swapfile name of the current buffer, it must be ignored | |
| 1907 */ | |
| 1908 if (curbuf->b_ml.ml_mfp != NULL | |
| 1909 && (p = curbuf->b_ml.ml_mfp->mf_fname) != NULL) | |
| 1910 { | |
| 1911 for (i = 0; i < num_files; ++i) | |
| 1912 if (fullpathcmp(p, files[i], TRUE) & FPC_SAME) | |
| 1913 { | |
| 1855 | 1914 /* Remove the name from files[i]. Move further entries |
| 1915 * down. When the array becomes empty free it here, since | |
| 1916 * FreeWild() won't be called below. */ | |
| 7 | 1917 vim_free(files[i]); |
| 1855 | 1918 if (--num_files == 0) |
| 1919 vim_free(files); | |
| 1920 else | |
| 1921 for ( ; i < num_files; ++i) | |
| 1922 files[i] = files[i + 1]; | |
| 7 | 1923 } |
| 1924 } | |
| 838 | 1925 if (nr > 0) |
| 7 | 1926 { |
| 1927 file_count += num_files; | |
| 1928 if (nr <= file_count) | |
| 1929 { | |
| 2267 | 1930 *fname_out = vim_strsave( |
| 1931 files[nr - 1 + num_files - file_count]); | |
| 7 | 1932 dirp = (char_u *)""; /* stop searching */ |
| 1933 } | |
| 1934 } | |
| 1935 else if (list) | |
| 1936 { | |
| 1937 if (dir_name[0] == '.' && dir_name[1] == NUL) | |
| 1938 { | |
| 2267 | 1939 if (fname == NULL) |
| 7 | 1940 MSG_PUTS(_(" In current directory:\n")); |
| 1941 else | |
| 1942 MSG_PUTS(_(" Using specified name:\n")); | |
| 1943 } | |
| 1944 else | |
| 1945 { | |
| 1946 MSG_PUTS(_(" In directory ")); | |
| 1947 msg_home_replace(dir_name); | |
| 1948 MSG_PUTS(":\n"); | |
| 1949 } | |
| 1950 | |
| 1951 if (num_files) | |
| 1952 { | |
| 1953 for (i = 0; i < num_files; ++i) | |
| 1954 { | |
| 1955 /* print the swap file name */ | |
| 1956 msg_outnum((long)++file_count); | |
| 1957 MSG_PUTS(". "); | |
| 1958 msg_puts(gettail(files[i])); | |
| 1959 msg_putchar('\n'); | |
| 1960 (void)swapfile_info(files[i]); | |
| 1961 } | |
| 1962 } | |
| 1963 else | |
| 1964 MSG_PUTS(_(" -- none --\n")); | |
| 1965 out_flush(); | |
| 1966 } | |
| 1967 else | |
| 1968 file_count += num_files; | |
| 1969 | |
| 1970 for (i = 0; i < num_names; ++i) | |
| 1971 vim_free(names[i]); | |
| 838 | 1972 if (num_files > 0) |
| 1973 FreeWild(num_files, files); | |
| 7 | 1974 } |
| 1975 vim_free(dir_name); | |
| 1976 return file_count; | |
| 1977 } | |
| 1978 | |
| 1979 #if defined(UNIX) || defined(WIN3264) /* Need _very_ long file names */ | |
| 1980 /* | |
| 1981 * Append the full path to name with path separators made into percent | |
| 1982 * signs, to dir. An unnamed buffer is handled as "" (<currentdir>/"") | |
| 1983 */ | |
| 1984 static char_u * | |
| 1985 make_percent_swname(dir, name) | |
| 1986 char_u *dir; | |
| 1987 char_u *name; | |
| 1988 { | |
| 39 | 1989 char_u *d, *s, *f; |
| 7 | 1990 |
| 1991 f = fix_fname(name != NULL ? name : (char_u *) ""); | |
| 1992 d = NULL; | |
| 1993 if (f != NULL) | |
| 1994 { | |
| 1995 s = alloc((unsigned)(STRLEN(f) + 1)); | |
| 1996 if (s != NULL) | |
| 1997 { | |
| 39 | 1998 STRCPY(s, f); |
| 1999 for (d = s; *d != NUL; mb_ptr_adv(d)) | |
| 2000 if (vim_ispathsep(*d)) | |
| 2001 *d = '%'; | |
| 7 | 2002 d = concat_fnames(dir, s, TRUE); |
| 2003 vim_free(s); | |
| 2004 } | |
| 2005 vim_free(f); | |
| 2006 } | |
| 2007 return d; | |
| 2008 } | |
| 2009 #endif | |
| 2010 | |
| 2011 #if (defined(UNIX) || defined(__EMX__) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)) | |
| 2012 static int process_still_running; | |
| 2013 #endif | |
| 2014 | |
| 2015 /* | |
| 580 | 2016 * Give information about an existing swap file. |
| 7 | 2017 * Returns timestamp (0 when unknown). |
| 2018 */ | |
| 2019 static time_t | |
| 2020 swapfile_info(fname) | |
| 2021 char_u *fname; | |
| 2022 { | |
| 2023 struct stat st; | |
| 2024 int fd; | |
| 2025 struct block0 b0; | |
| 2026 time_t x = (time_t)0; | |
| 1001 | 2027 char *p; |
| 7 | 2028 #ifdef UNIX |
| 2029 char_u uname[B0_UNAME_SIZE]; | |
| 2030 #endif | |
| 2031 | |
| 2032 /* print the swap file date */ | |
| 2033 if (mch_stat((char *)fname, &st) != -1) | |
| 2034 { | |
| 2035 #ifdef UNIX | |
| 2036 /* print name of owner of the file */ | |
| 2037 if (mch_get_uname(st.st_uid, uname, B0_UNAME_SIZE) == OK) | |
| 2038 { | |
| 2039 MSG_PUTS(_(" owned by: ")); | |
| 2040 msg_outtrans(uname); | |
| 2041 MSG_PUTS(_(" dated: ")); | |
| 2042 } | |
| 2043 else | |
| 2044 #endif | |
| 2045 MSG_PUTS(_(" dated: ")); | |
| 2046 x = st.st_mtime; /* Manx C can't do &st.st_mtime */ | |
| 1001 | 2047 p = ctime(&x); /* includes '\n' */ |
| 2048 if (p == NULL) | |
| 2049 MSG_PUTS("(invalid)\n"); | |
| 2050 else | |
| 2051 MSG_PUTS(p); | |
| 7 | 2052 } |
| 2053 | |
| 2054 /* | |
| 2055 * print the original file name | |
| 2056 */ | |
| 2057 fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
| 2058 if (fd >= 0) | |
| 2059 { | |
| 2060 if (read(fd, (char *)&b0, sizeof(b0)) == sizeof(b0)) | |
| 2061 { | |
| 2062 if (STRNCMP(b0.b0_version, "VIM 3.0", 7) == 0) | |
| 2063 { | |
| 2064 MSG_PUTS(_(" [from Vim version 3.0]")); | |
| 2065 } | |
| 2267 | 2066 else if (ml_check_b0_id(&b0) == FAIL) |
| 7 | 2067 { |
| 2068 MSG_PUTS(_(" [does not look like a Vim swap file]")); | |
| 2069 } | |
| 2070 else | |
| 2071 { | |
| 2072 MSG_PUTS(_(" file name: ")); | |
| 2073 if (b0.b0_fname[0] == NUL) | |
| 9 | 2074 MSG_PUTS(_("[No Name]")); |
| 7 | 2075 else |
| 2076 msg_outtrans(b0.b0_fname); | |
| 2077 | |
| 2078 MSG_PUTS(_("\n modified: ")); | |
| 2079 MSG_PUTS(b0.b0_dirty ? _("YES") : _("no")); | |
| 2080 | |
| 2081 if (*(b0.b0_uname) != NUL) | |
| 2082 { | |
| 2083 MSG_PUTS(_("\n user name: ")); | |
| 2084 msg_outtrans(b0.b0_uname); | |
| 2085 } | |
| 2086 | |
| 2087 if (*(b0.b0_hname) != NUL) | |
| 2088 { | |
| 2089 if (*(b0.b0_uname) != NUL) | |
| 2090 MSG_PUTS(_(" host name: ")); | |
| 2091 else | |
| 2092 MSG_PUTS(_("\n host name: ")); | |
| 2093 msg_outtrans(b0.b0_hname); | |
| 2094 } | |
| 2095 | |
| 2096 if (char_to_long(b0.b0_pid) != 0L) | |
| 2097 { | |
| 2098 MSG_PUTS(_("\n process ID: ")); | |
| 2099 msg_outnum(char_to_long(b0.b0_pid)); | |
| 2100 #if defined(UNIX) || defined(__EMX__) | |
| 2101 /* EMX kill() not working correctly, it seems */ | |
| 2102 if (kill((pid_t)char_to_long(b0.b0_pid), 0) == 0) | |
| 2103 { | |
| 2104 MSG_PUTS(_(" (still running)")); | |
| 2105 # if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) | |
| 2106 process_still_running = TRUE; | |
| 2107 # endif | |
| 2108 } | |
| 2109 #endif | |
| 2110 } | |
| 2111 | |
| 2112 if (b0_magic_wrong(&b0)) | |
| 2113 { | |
| 2114 #if defined(MSDOS) || defined(MSWIN) | |
| 2115 if (STRNCMP(b0.b0_hname, "PC ", 3) == 0) | |
| 2116 MSG_PUTS(_("\n [not usable with this version of Vim]")); | |
| 2117 else | |
| 2118 #endif | |
| 2119 MSG_PUTS(_("\n [not usable on this computer]")); | |
| 2120 } | |
| 2121 } | |
| 2122 } | |
| 2123 else | |
| 2124 MSG_PUTS(_(" [cannot be read]")); | |
| 2125 close(fd); | |
| 2126 } | |
| 2127 else | |
| 2128 MSG_PUTS(_(" [cannot be opened]")); | |
| 2129 msg_putchar('\n'); | |
| 2130 | |
| 2131 return x; | |
| 2132 } | |
| 2133 | |
| 2134 static int | |
| 2135 recov_file_names(names, path, prepend_dot) | |
| 2136 char_u **names; | |
| 2137 char_u *path; | |
| 2138 int prepend_dot; | |
| 2139 { | |
| 2140 int num_names; | |
| 2141 | |
| 2142 #ifdef SHORT_FNAME | |
| 2143 /* | |
| 2144 * (MS-DOS) always short names | |
| 2145 */ | |
| 2146 names[0] = modname(path, (char_u *)".sw?", FALSE); | |
| 2147 num_names = 1; | |
| 2148 #else /* !SHORT_FNAME */ | |
| 2149 /* | |
| 2150 * (Win32 and Win64) never short names, but do prepend a dot. | |
| 2151 * (Not MS-DOS or Win32 or Win64) maybe short name, maybe not: Try both. | |
| 2152 * Only use the short name if it is different. | |
| 2153 */ | |
| 2154 char_u *p; | |
| 2155 int i; | |
| 2156 # ifndef WIN3264 | |
| 2157 int shortname = curbuf->b_shortname; | |
| 2158 | |
| 2159 curbuf->b_shortname = FALSE; | |
| 2160 # endif | |
| 2161 | |
| 2162 num_names = 0; | |
| 2163 | |
| 2164 /* | |
| 2165 * May also add the file name with a dot prepended, for swap file in same | |
| 2166 * dir as original file. | |
| 2167 */ | |
| 2168 if (prepend_dot) | |
| 2169 { | |
| 2170 names[num_names] = modname(path, (char_u *)".sw?", TRUE); | |
| 2171 if (names[num_names] == NULL) | |
| 2172 goto end; | |
| 2173 ++num_names; | |
| 2174 } | |
| 2175 | |
| 2176 /* | |
| 2177 * Form the normal swap file name pattern by appending ".sw?". | |
| 2178 */ | |
| 2179 #ifdef VMS | |
| 2180 names[num_names] = concat_fnames(path, (char_u *)"_sw%", FALSE); | |
| 2181 #else | |
| 2182 # ifdef RISCOS | |
| 2183 names[num_names] = concat_fnames(path, (char_u *)"_sw#", FALSE); | |
| 2184 # else | |
| 2185 names[num_names] = concat_fnames(path, (char_u *)".sw?", FALSE); | |
| 2186 # endif | |
| 2187 #endif | |
| 2188 if (names[num_names] == NULL) | |
| 2189 goto end; | |
| 2190 if (num_names >= 1) /* check if we have the same name twice */ | |
| 2191 { | |
| 2192 p = names[num_names - 1]; | |
| 2193 i = (int)STRLEN(names[num_names - 1]) - (int)STRLEN(names[num_names]); | |
| 2194 if (i > 0) | |
| 2195 p += i; /* file name has been expanded to full path */ | |
| 2196 | |
| 2197 if (STRCMP(p, names[num_names]) != 0) | |
| 2198 ++num_names; | |
| 2199 else | |
| 2200 vim_free(names[num_names]); | |
| 2201 } | |
| 2202 else | |
| 2203 ++num_names; | |
| 2204 | |
| 2205 # ifndef WIN3264 | |
| 2206 /* | |
| 2207 * Also try with 'shortname' set, in case the file is on a DOS filesystem. | |
| 2208 */ | |
| 2209 curbuf->b_shortname = TRUE; | |
| 2210 #ifdef VMS | |
| 2211 names[num_names] = modname(path, (char_u *)"_sw%", FALSE); | |
| 2212 #else | |
| 2213 # ifdef RISCOS | |
| 2214 names[num_names] = modname(path, (char_u *)"_sw#", FALSE); | |
| 2215 # else | |
| 2216 names[num_names] = modname(path, (char_u *)".sw?", FALSE); | |
| 2217 # endif | |
| 2218 #endif | |
| 2219 if (names[num_names] == NULL) | |
| 2220 goto end; | |
| 2221 | |
| 2222 /* | |
| 2223 * Remove the one from 'shortname', if it's the same as with 'noshortname'. | |
| 2224 */ | |
| 2225 p = names[num_names]; | |
| 2226 i = STRLEN(names[num_names]) - STRLEN(names[num_names - 1]); | |
| 2227 if (i > 0) | |
| 2228 p += i; /* file name has been expanded to full path */ | |
| 2229 if (STRCMP(names[num_names - 1], p) == 0) | |
| 2230 vim_free(names[num_names]); | |
| 2231 else | |
| 2232 ++num_names; | |
| 2233 # endif | |
| 2234 | |
| 2235 end: | |
| 2236 # ifndef WIN3264 | |
| 2237 curbuf->b_shortname = shortname; | |
| 2238 # endif | |
| 2239 | |
| 2240 #endif /* !SHORT_FNAME */ | |
| 2241 | |
| 2242 return num_names; | |
| 2243 } | |
| 2244 | |
| 2245 /* | |
| 2246 * sync all memlines | |
| 2247 * | |
| 2248 * If 'check_file' is TRUE, check if original file exists and was not changed. | |
| 2249 * If 'check_char' is TRUE, stop syncing when character becomes available, but | |
| 2250 * always sync at least one block. | |
| 2251 */ | |
| 2252 void | |
| 2253 ml_sync_all(check_file, check_char) | |
| 2254 int check_file; | |
| 2255 int check_char; | |
| 2256 { | |
| 2257 buf_T *buf; | |
| 2258 struct stat st; | |
| 2259 | |
| 2260 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
| 2261 { | |
| 2262 if (buf->b_ml.ml_mfp == NULL || buf->b_ml.ml_mfp->mf_fname == NULL) | |
| 2263 continue; /* no file */ | |
| 2264 | |
| 2265 ml_flush_line(buf); /* flush buffered line */ | |
| 2266 /* flush locked block */ | |
| 2267 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); | |
| 2268 if (bufIsChanged(buf) && check_file && mf_need_trans(buf->b_ml.ml_mfp) | |
| 2269 && buf->b_ffname != NULL) | |
| 2270 { | |
| 2271 /* | |
| 2272 * If the original file does not exist anymore or has been changed | |
| 2273 * call ml_preserve() to get rid of all negative numbered blocks. | |
| 2274 */ | |
| 2275 if (mch_stat((char *)buf->b_ffname, &st) == -1 | |
| 2276 || st.st_mtime != buf->b_mtime_read | |
|
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|
2277 || st.st_size != buf->b_orig_size) |
| 7 | 2278 { |
| 2279 ml_preserve(buf, FALSE); | |
| 2280 did_check_timestamps = FALSE; | |
| 2281 need_check_timestamps = TRUE; /* give message later */ | |
| 2282 } | |
| 2283 } | |
| 2284 if (buf->b_ml.ml_mfp->mf_dirty) | |
| 2285 { | |
| 2286 (void)mf_sync(buf->b_ml.ml_mfp, (check_char ? MFS_STOP : 0) | |
| 2287 | (bufIsChanged(buf) ? MFS_FLUSH : 0)); | |
| 2288 if (check_char && ui_char_avail()) /* character available now */ | |
| 2289 break; | |
| 2290 } | |
| 2291 } | |
| 2292 } | |
| 2293 | |
| 2294 /* | |
| 2295 * sync one buffer, including negative blocks | |
| 2296 * | |
| 2297 * after this all the blocks are in the swap file | |
| 2298 * | |
| 2299 * Used for the :preserve command and when the original file has been | |
| 2300 * changed or deleted. | |
| 2301 * | |
| 2302 * when message is TRUE the success of preserving is reported | |
| 2303 */ | |
| 2304 void | |
| 2305 ml_preserve(buf, message) | |
| 2306 buf_T *buf; | |
| 2307 int message; | |
| 2308 { | |
| 2309 bhdr_T *hp; | |
| 2310 linenr_T lnum; | |
| 2311 memfile_T *mfp = buf->b_ml.ml_mfp; | |
| 2312 int status; | |
| 2313 int got_int_save = got_int; | |
| 2314 | |
| 2315 if (mfp == NULL || mfp->mf_fname == NULL) | |
| 2316 { | |
| 2317 if (message) | |
| 2318 EMSG(_("E313: Cannot preserve, there is no swap file")); | |
| 2319 return; | |
| 2320 } | |
| 2321 | |
| 2322 /* We only want to stop when interrupted here, not when interrupted | |
| 2323 * before. */ | |
| 2324 got_int = FALSE; | |
| 2325 | |
| 2326 ml_flush_line(buf); /* flush buffered line */ | |
| 2327 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
| 2328 status = mf_sync(mfp, MFS_ALL | MFS_FLUSH); | |
| 2329 | |
| 2330 /* stack is invalid after mf_sync(.., MFS_ALL) */ | |
| 2331 buf->b_ml.ml_stack_top = 0; | |
| 2332 | |
| 2333 /* | |
| 2334 * Some of the data blocks may have been changed from negative to | |
| 2335 * positive block number. In that case the pointer blocks need to be | |
| 2336 * updated. | |
| 2337 * | |
| 2338 * We don't know in which pointer block the references are, so we visit | |
| 2339 * all data blocks until there are no more translations to be done (or | |
| 2340 * we hit the end of the file, which can only happen in case a write fails, | |
| 2341 * e.g. when file system if full). | |
| 2342 * ml_find_line() does the work by translating the negative block numbers | |
| 2343 * when getting the first line of each data block. | |
| 2344 */ | |
| 2345 if (mf_need_trans(mfp) && !got_int) | |
| 2346 { | |
| 2347 lnum = 1; | |
| 2348 while (mf_need_trans(mfp) && lnum <= buf->b_ml.ml_line_count) | |
| 2349 { | |
| 2350 hp = ml_find_line(buf, lnum, ML_FIND); | |
| 2351 if (hp == NULL) | |
| 2352 { | |
| 2353 status = FAIL; | |
| 2354 goto theend; | |
| 2355 } | |
| 2356 CHECK(buf->b_ml.ml_locked_low != lnum, "low != lnum"); | |
| 2357 lnum = buf->b_ml.ml_locked_high + 1; | |
| 2358 } | |
| 2359 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
| 2360 /* sync the updated pointer blocks */ | |
| 2361 if (mf_sync(mfp, MFS_ALL | MFS_FLUSH) == FAIL) | |
| 2362 status = FAIL; | |
| 2363 buf->b_ml.ml_stack_top = 0; /* stack is invalid now */ | |
| 2364 } | |
| 2365 theend: | |
| 2366 got_int |= got_int_save; | |
| 2367 | |
| 2368 if (message) | |
| 2369 { | |
| 2370 if (status == OK) | |
| 2371 MSG(_("File preserved")); | |
| 2372 else | |
| 2373 EMSG(_("E314: Preserve failed")); | |
| 2374 } | |
| 2375 } | |
| 2376 | |
| 2377 /* | |
| 2378 * NOTE: The pointer returned by the ml_get_*() functions only remains valid | |
| 2379 * until the next call! | |
| 2380 * line1 = ml_get(1); | |
| 2381 * line2 = ml_get(2); // line1 is now invalid! | |
| 2382 * Make a copy of the line if necessary. | |
| 2383 */ | |
| 2384 /* | |
| 2385 * get a pointer to a (read-only copy of a) line | |
| 2386 * | |
| 2387 * On failure an error message is given and IObuff is returned (to avoid | |
| 2388 * having to check for error everywhere). | |
| 2389 */ | |
| 2390 char_u * | |
| 2391 ml_get(lnum) | |
| 2392 linenr_T lnum; | |
| 2393 { | |
| 2394 return ml_get_buf(curbuf, lnum, FALSE); | |
| 2395 } | |
| 2396 | |
| 2397 /* | |
| 2398 * ml_get_pos: get pointer to position 'pos' | |
| 2399 */ | |
| 2400 char_u * | |
| 2401 ml_get_pos(pos) | |
| 2402 pos_T *pos; | |
| 2403 { | |
| 2404 return (ml_get_buf(curbuf, pos->lnum, FALSE) + pos->col); | |
| 2405 } | |
| 2406 | |
| 2407 /* | |
| 2408 * ml_get_curline: get pointer to cursor line. | |
| 2409 */ | |
| 2410 char_u * | |
| 2411 ml_get_curline() | |
| 2412 { | |
| 2413 return ml_get_buf(curbuf, curwin->w_cursor.lnum, FALSE); | |
| 2414 } | |
| 2415 | |
| 2416 /* | |
| 2417 * ml_get_cursor: get pointer to cursor position | |
| 2418 */ | |
| 2419 char_u * | |
| 2420 ml_get_cursor() | |
| 2421 { | |
| 2422 return (ml_get_buf(curbuf, curwin->w_cursor.lnum, FALSE) + | |
| 2423 curwin->w_cursor.col); | |
| 2424 } | |
| 2425 | |
| 2426 /* | |
| 2427 * get a pointer to a line in a specific buffer | |
| 2428 * | |
| 2429 * "will_change": if TRUE mark the buffer dirty (chars in the line will be | |
| 2430 * changed) | |
| 2431 */ | |
| 2432 char_u * | |
| 2433 ml_get_buf(buf, lnum, will_change) | |
| 2434 buf_T *buf; | |
| 2435 linenr_T lnum; | |
| 2436 int will_change; /* line will be changed */ | |
| 2437 { | |
| 1068 | 2438 bhdr_T *hp; |
| 2439 DATA_BL *dp; | |
| 2440 char_u *ptr; | |
| 2441 static int recursive = 0; | |
| 7 | 2442 |
| 2443 if (lnum > buf->b_ml.ml_line_count) /* invalid line number */ | |
| 2444 { | |
| 1068 | 2445 if (recursive == 0) |
| 2446 { | |
| 2447 /* Avoid giving this message for a recursive call, may happen when | |
| 2448 * the GUI redraws part of the text. */ | |
| 2449 ++recursive; | |
| 2450 EMSGN(_("E315: ml_get: invalid lnum: %ld"), lnum); | |
| 2451 --recursive; | |
| 2452 } | |
| 7 | 2453 errorret: |
| 2454 STRCPY(IObuff, "???"); | |
| 2455 return IObuff; | |
| 2456 } | |
| 2457 if (lnum <= 0) /* pretend line 0 is line 1 */ | |
| 2458 lnum = 1; | |
| 2459 | |
| 2460 if (buf->b_ml.ml_mfp == NULL) /* there are no lines */ | |
| 2461 return (char_u *)""; | |
| 2462 | |
|
2108
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diff
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|
2463 /* |
|
3cdf2a653e00
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diff
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|
2464 * See if it is the same line as requested last time. |
|
3cdf2a653e00
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diff
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|
2465 * Otherwise may need to flush last used line. |
|
3cdf2a653e00
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diff
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|
2466 * Don't use the last used line when 'swapfile' is reset, need to load all |
|
3cdf2a653e00
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|
2467 * blocks. |
|
3cdf2a653e00
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diff
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|
2468 */ |
| 1066 | 2469 if (buf->b_ml.ml_line_lnum != lnum || mf_dont_release) |
| 7 | 2470 { |
| 2471 ml_flush_line(buf); | |
| 2472 | |
| 2473 /* | |
| 2474 * Find the data block containing the line. | |
| 2475 * This also fills the stack with the blocks from the root to the data | |
| 2476 * block and releases any locked block. | |
| 2477 */ | |
| 2478 if ((hp = ml_find_line(buf, lnum, ML_FIND)) == NULL) | |
| 2479 { | |
| 1068 | 2480 if (recursive == 0) |
| 2481 { | |
| 2482 /* Avoid giving this message for a recursive call, may happen | |
| 2483 * when the GUI redraws part of the text. */ | |
| 2484 ++recursive; | |
| 2485 EMSGN(_("E316: ml_get: cannot find line %ld"), lnum); | |
| 2486 --recursive; | |
| 2487 } | |
| 7 | 2488 goto errorret; |
| 2489 } | |
| 2490 | |
| 2491 dp = (DATA_BL *)(hp->bh_data); | |
| 2492 | |
| 2493 ptr = (char_u *)dp + ((dp->db_index[lnum - buf->b_ml.ml_locked_low]) & DB_INDEX_MASK); | |
| 2494 buf->b_ml.ml_line_ptr = ptr; | |
| 2495 buf->b_ml.ml_line_lnum = lnum; | |
| 2496 buf->b_ml.ml_flags &= ~ML_LINE_DIRTY; | |
| 2497 } | |
| 2498 if (will_change) | |
| 2499 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 2500 | |
| 2501 return buf->b_ml.ml_line_ptr; | |
| 2502 } | |
| 2503 | |
| 2504 /* | |
| 2505 * Check if a line that was just obtained by a call to ml_get | |
| 2506 * is in allocated memory. | |
| 2507 */ | |
| 2508 int | |
| 2509 ml_line_alloced() | |
| 2510 { | |
| 2511 return (curbuf->b_ml.ml_flags & ML_LINE_DIRTY); | |
| 2512 } | |
| 2513 | |
| 2514 /* | |
| 2515 * Append a line after lnum (may be 0 to insert a line in front of the file). | |
| 2516 * "line" does not need to be allocated, but can't be another line in a | |
| 2517 * buffer, unlocking may make it invalid. | |
| 2518 * | |
| 2519 * newfile: TRUE when starting to edit a new file, meaning that pe_old_lnum | |
| 2520 * will be set for recovery | |
| 2521 * Check: The caller of this function should probably also call | |
| 2522 * appended_lines(). | |
| 2523 * | |
| 2524 * return FAIL for failure, OK otherwise | |
| 2525 */ | |
| 2526 int | |
| 2527 ml_append(lnum, line, len, newfile) | |
| 2528 linenr_T lnum; /* append after this line (can be 0) */ | |
| 2529 char_u *line; /* text of the new line */ | |
| 2530 colnr_T len; /* length of new line, including NUL, or 0 */ | |
| 2531 int newfile; /* flag, see above */ | |
| 2532 { | |
| 2533 /* When starting up, we might still need to create the memfile */ | |
|
2394
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Add the 'undoreload' option to be able to undo a file reload.
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2360
diff
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|
2534 if (curbuf->b_ml.ml_mfp == NULL && open_buffer(FALSE, NULL, 0) == FAIL) |
| 7 | 2535 return FAIL; |
| 2536 | |
| 2537 if (curbuf->b_ml.ml_line_lnum != 0) | |
| 2538 ml_flush_line(curbuf); | |
| 2539 return ml_append_int(curbuf, lnum, line, len, newfile, FALSE); | |
| 2540 } | |
| 2541 | |
| 748 | 2542 #if defined(FEAT_SPELL) || defined(PROTO) |
| 625 | 2543 /* |
| 2544 * Like ml_append() but for an arbitrary buffer. The buffer must already have | |
| 2545 * a memline. | |
| 2546 */ | |
| 2547 int | |
| 2548 ml_append_buf(buf, lnum, line, len, newfile) | |
| 2549 buf_T *buf; | |
| 2550 linenr_T lnum; /* append after this line (can be 0) */ | |
| 2551 char_u *line; /* text of the new line */ | |
| 2552 colnr_T len; /* length of new line, including NUL, or 0 */ | |
| 2553 int newfile; /* flag, see above */ | |
| 2554 { | |
| 2555 if (buf->b_ml.ml_mfp == NULL) | |
| 2556 return FAIL; | |
| 2557 | |
| 2558 if (buf->b_ml.ml_line_lnum != 0) | |
| 2559 ml_flush_line(buf); | |
| 2560 return ml_append_int(buf, lnum, line, len, newfile, FALSE); | |
| 2561 } | |
| 2562 #endif | |
| 2563 | |
| 7 | 2564 static int |
| 2565 ml_append_int(buf, lnum, line, len, newfile, mark) | |
| 2566 buf_T *buf; | |
| 2567 linenr_T lnum; /* append after this line (can be 0) */ | |
| 2568 char_u *line; /* text of the new line */ | |
| 2569 colnr_T len; /* length of line, including NUL, or 0 */ | |
| 2570 int newfile; /* flag, see above */ | |
| 2571 int mark; /* mark the new line */ | |
| 2572 { | |
| 2573 int i; | |
| 2574 int line_count; /* number of indexes in current block */ | |
| 2575 int offset; | |
| 2576 int from, to; | |
| 2577 int space_needed; /* space needed for new line */ | |
| 2578 int page_size; | |
| 2579 int page_count; | |
| 2580 int db_idx; /* index for lnum in data block */ | |
| 2581 bhdr_T *hp; | |
| 2582 memfile_T *mfp; | |
| 2583 DATA_BL *dp; | |
| 2584 PTR_BL *pp; | |
| 2585 infoptr_T *ip; | |
| 2586 | |
| 2587 /* lnum out of range */ | |
| 2588 if (lnum > buf->b_ml.ml_line_count || buf->b_ml.ml_mfp == NULL) | |
| 2589 return FAIL; | |
| 2590 | |
| 2591 if (lowest_marked && lowest_marked > lnum) | |
| 2592 lowest_marked = lnum + 1; | |
| 2593 | |
| 2594 if (len == 0) | |
| 2595 len = (colnr_T)STRLEN(line) + 1; /* space needed for the text */ | |
| 2596 space_needed = len + INDEX_SIZE; /* space needed for text + index */ | |
| 2597 | |
| 2598 mfp = buf->b_ml.ml_mfp; | |
| 2599 page_size = mfp->mf_page_size; | |
| 2600 | |
| 2601 /* | |
| 2602 * find the data block containing the previous line | |
| 2603 * This also fills the stack with the blocks from the root to the data block | |
| 2604 * This also releases any locked block. | |
| 2605 */ | |
| 2606 if ((hp = ml_find_line(buf, lnum == 0 ? (linenr_T)1 : lnum, | |
| 2607 ML_INSERT)) == NULL) | |
| 2608 return FAIL; | |
| 2609 | |
| 2610 buf->b_ml.ml_flags &= ~ML_EMPTY; | |
| 2611 | |
| 2612 if (lnum == 0) /* got line one instead, correct db_idx */ | |
| 2613 db_idx = -1; /* careful, it is negative! */ | |
| 2614 else | |
| 2615 db_idx = lnum - buf->b_ml.ml_locked_low; | |
| 2616 /* get line count before the insertion */ | |
| 2617 line_count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low; | |
| 2618 | |
| 2619 dp = (DATA_BL *)(hp->bh_data); | |
| 2620 | |
| 2621 /* | |
| 2622 * If | |
| 2623 * - there is not enough room in the current block | |
| 2624 * - appending to the last line in the block | |
| 2625 * - not appending to the last line in the file | |
| 2626 * insert in front of the next block. | |
| 2627 */ | |
| 2628 if ((int)dp->db_free < space_needed && db_idx == line_count - 1 | |
| 2629 && lnum < buf->b_ml.ml_line_count) | |
| 2630 { | |
| 2631 /* | |
| 2632 * Now that the line is not going to be inserted in the block that we | |
| 2633 * expected, the line count has to be adjusted in the pointer blocks | |
| 2634 * by using ml_locked_lineadd. | |
| 2635 */ | |
| 2636 --(buf->b_ml.ml_locked_lineadd); | |
| 2637 --(buf->b_ml.ml_locked_high); | |
| 2638 if ((hp = ml_find_line(buf, lnum + 1, ML_INSERT)) == NULL) | |
| 2639 return FAIL; | |
| 2640 | |
| 2641 db_idx = -1; /* careful, it is negative! */ | |
| 2642 /* get line count before the insertion */ | |
| 2643 line_count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low; | |
| 2644 CHECK(buf->b_ml.ml_locked_low != lnum + 1, "locked_low != lnum + 1"); | |
| 2645 | |
| 2646 dp = (DATA_BL *)(hp->bh_data); | |
| 2647 } | |
| 2648 | |
| 2649 ++buf->b_ml.ml_line_count; | |
| 2650 | |
| 2651 if ((int)dp->db_free >= space_needed) /* enough room in data block */ | |
| 2652 { | |
| 2653 /* | |
| 2654 * Insert new line in existing data block, or in data block allocated above. | |
| 2655 */ | |
| 2656 dp->db_txt_start -= len; | |
| 2657 dp->db_free -= space_needed; | |
| 2658 ++(dp->db_line_count); | |
| 2659 | |
| 2660 /* | |
| 2661 * move the text of the lines that follow to the front | |
| 2662 * adjust the indexes of the lines that follow | |
| 2663 */ | |
| 2664 if (line_count > db_idx + 1) /* if there are following lines */ | |
| 2665 { | |
| 2666 /* | |
| 2667 * Offset is the start of the previous line. | |
| 2668 * This will become the character just after the new line. | |
| 2669 */ | |
| 2670 if (db_idx < 0) | |
| 2671 offset = dp->db_txt_end; | |
| 2672 else | |
| 2673 offset = ((dp->db_index[db_idx]) & DB_INDEX_MASK); | |
| 2674 mch_memmove((char *)dp + dp->db_txt_start, | |
| 2675 (char *)dp + dp->db_txt_start + len, | |
| 2676 (size_t)(offset - (dp->db_txt_start + len))); | |
| 2677 for (i = line_count - 1; i > db_idx; --i) | |
| 2678 dp->db_index[i + 1] = dp->db_index[i] - len; | |
| 2679 dp->db_index[db_idx + 1] = offset - len; | |
| 2680 } | |
| 2681 else /* add line at the end */ | |
| 2682 dp->db_index[db_idx + 1] = dp->db_txt_start; | |
| 2683 | |
| 2684 /* | |
| 2685 * copy the text into the block | |
| 2686 */ | |
| 2687 mch_memmove((char *)dp + dp->db_index[db_idx + 1], line, (size_t)len); | |
| 2688 if (mark) | |
| 2689 dp->db_index[db_idx + 1] |= DB_MARKED; | |
| 2690 | |
| 2691 /* | |
| 2692 * Mark the block dirty. | |
| 2693 */ | |
| 2694 buf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 2695 if (!newfile) | |
| 2696 buf->b_ml.ml_flags |= ML_LOCKED_POS; | |
| 2697 } | |
| 2698 else /* not enough space in data block */ | |
| 2699 { | |
| 2700 /* | |
| 2701 * If there is not enough room we have to create a new data block and copy some | |
| 2702 * lines into it. | |
| 2703 * Then we have to insert an entry in the pointer block. | |
| 2704 * If this pointer block also is full, we go up another block, and so on, up | |
| 2705 * to the root if necessary. | |
| 2706 * The line counts in the pointer blocks have already been adjusted by | |
| 2707 * ml_find_line(). | |
| 2708 */ | |
| 2709 long line_count_left, line_count_right; | |
| 2710 int page_count_left, page_count_right; | |
| 2711 bhdr_T *hp_left; | |
| 2712 bhdr_T *hp_right; | |
| 2713 bhdr_T *hp_new; | |
| 2714 int lines_moved; | |
| 2715 int data_moved = 0; /* init to shut up gcc */ | |
| 2716 int total_moved = 0; /* init to shut up gcc */ | |
| 2717 DATA_BL *dp_right, *dp_left; | |
| 2718 int stack_idx; | |
| 2719 int in_left; | |
| 2720 int lineadd; | |
| 2721 blocknr_T bnum_left, bnum_right; | |
| 2722 linenr_T lnum_left, lnum_right; | |
| 2723 int pb_idx; | |
| 2724 PTR_BL *pp_new; | |
| 2725 | |
| 2726 /* | |
| 2727 * We are going to allocate a new data block. Depending on the | |
| 2728 * situation it will be put to the left or right of the existing | |
| 2729 * block. If possible we put the new line in the left block and move | |
| 2730 * the lines after it to the right block. Otherwise the new line is | |
| 2731 * also put in the right block. This method is more efficient when | |
| 2732 * inserting a lot of lines at one place. | |
| 2733 */ | |
| 2734 if (db_idx < 0) /* left block is new, right block is existing */ | |
| 2735 { | |
| 2736 lines_moved = 0; | |
| 2737 in_left = TRUE; | |
| 2738 /* space_needed does not change */ | |
| 2739 } | |
| 2740 else /* left block is existing, right block is new */ | |
| 2741 { | |
| 2742 lines_moved = line_count - db_idx - 1; | |
| 2743 if (lines_moved == 0) | |
| 2744 in_left = FALSE; /* put new line in right block */ | |
| 2745 /* space_needed does not change */ | |
| 2746 else | |
| 2747 { | |
| 2748 data_moved = ((dp->db_index[db_idx]) & DB_INDEX_MASK) - | |
| 2749 dp->db_txt_start; | |
| 2750 total_moved = data_moved + lines_moved * INDEX_SIZE; | |
| 2751 if ((int)dp->db_free + total_moved >= space_needed) | |
| 2752 { | |
| 2753 in_left = TRUE; /* put new line in left block */ | |
| 2754 space_needed = total_moved; | |
| 2755 } | |
| 2756 else | |
| 2757 { | |
| 2758 in_left = FALSE; /* put new line in right block */ | |
| 2759 space_needed += total_moved; | |
| 2760 } | |
| 2761 } | |
| 2762 } | |
| 2763 | |
| 2764 page_count = ((space_needed + HEADER_SIZE) + page_size - 1) / page_size; | |
| 2765 if ((hp_new = ml_new_data(mfp, newfile, page_count)) == NULL) | |
| 2766 { | |
| 2767 /* correct line counts in pointer blocks */ | |
| 2768 --(buf->b_ml.ml_locked_lineadd); | |
| 2769 --(buf->b_ml.ml_locked_high); | |
| 2770 return FAIL; | |
| 2771 } | |
| 2772 if (db_idx < 0) /* left block is new */ | |
| 2773 { | |
| 2774 hp_left = hp_new; | |
| 2775 hp_right = hp; | |
| 2776 line_count_left = 0; | |
| 2777 line_count_right = line_count; | |
| 2778 } | |
| 2779 else /* right block is new */ | |
| 2780 { | |
| 2781 hp_left = hp; | |
| 2782 hp_right = hp_new; | |
| 2783 line_count_left = line_count; | |
| 2784 line_count_right = 0; | |
| 2785 } | |
| 2786 dp_right = (DATA_BL *)(hp_right->bh_data); | |
| 2787 dp_left = (DATA_BL *)(hp_left->bh_data); | |
| 2788 bnum_left = hp_left->bh_bnum; | |
| 2789 bnum_right = hp_right->bh_bnum; | |
| 2790 page_count_left = hp_left->bh_page_count; | |
| 2791 page_count_right = hp_right->bh_page_count; | |
| 2792 | |
| 2793 /* | |
| 2794 * May move the new line into the right/new block. | |
| 2795 */ | |
| 2796 if (!in_left) | |
| 2797 { | |
| 2798 dp_right->db_txt_start -= len; | |
| 2799 dp_right->db_free -= len + INDEX_SIZE; | |
| 2800 dp_right->db_index[0] = dp_right->db_txt_start; | |
| 2801 if (mark) | |
| 2802 dp_right->db_index[0] |= DB_MARKED; | |
| 2803 | |
| 2804 mch_memmove((char *)dp_right + dp_right->db_txt_start, | |
| 2805 line, (size_t)len); | |
| 2806 ++line_count_right; | |
| 2807 } | |
| 2808 /* | |
| 2809 * may move lines from the left/old block to the right/new one. | |
| 2810 */ | |
| 2811 if (lines_moved) | |
| 2812 { | |
| 2813 /* | |
| 2814 */ | |
| 2815 dp_right->db_txt_start -= data_moved; | |
| 2816 dp_right->db_free -= total_moved; | |
| 2817 mch_memmove((char *)dp_right + dp_right->db_txt_start, | |
| 2818 (char *)dp_left + dp_left->db_txt_start, | |
| 2819 (size_t)data_moved); | |
| 2820 offset = dp_right->db_txt_start - dp_left->db_txt_start; | |
| 2821 dp_left->db_txt_start += data_moved; | |
| 2822 dp_left->db_free += total_moved; | |
| 2823 | |
| 2824 /* | |
| 2825 * update indexes in the new block | |
| 2826 */ | |
| 2827 for (to = line_count_right, from = db_idx + 1; | |
| 2828 from < line_count_left; ++from, ++to) | |
| 2829 dp_right->db_index[to] = dp->db_index[from] + offset; | |
| 2830 line_count_right += lines_moved; | |
| 2831 line_count_left -= lines_moved; | |
| 2832 } | |
| 2833 | |
| 2834 /* | |
| 2835 * May move the new line into the left (old or new) block. | |
| 2836 */ | |
| 2837 if (in_left) | |
| 2838 { | |
| 2839 dp_left->db_txt_start -= len; | |
| 2840 dp_left->db_free -= len + INDEX_SIZE; | |
| 2841 dp_left->db_index[line_count_left] = dp_left->db_txt_start; | |
| 2842 if (mark) | |
| 2843 dp_left->db_index[line_count_left] |= DB_MARKED; | |
| 2844 mch_memmove((char *)dp_left + dp_left->db_txt_start, | |
| 2845 line, (size_t)len); | |
| 2846 ++line_count_left; | |
| 2847 } | |
| 2848 | |
| 2849 if (db_idx < 0) /* left block is new */ | |
| 2850 { | |
| 2851 lnum_left = lnum + 1; | |
| 2852 lnum_right = 0; | |
| 2853 } | |
| 2854 else /* right block is new */ | |
| 2855 { | |
| 2856 lnum_left = 0; | |
| 2857 if (in_left) | |
| 2858 lnum_right = lnum + 2; | |
| 2859 else | |
| 2860 lnum_right = lnum + 1; | |
| 2861 } | |
| 2862 dp_left->db_line_count = line_count_left; | |
| 2863 dp_right->db_line_count = line_count_right; | |
| 2864 | |
| 2865 /* | |
| 2866 * release the two data blocks | |
| 2867 * The new one (hp_new) already has a correct blocknumber. | |
| 2868 * The old one (hp, in ml_locked) gets a positive blocknumber if | |
| 2869 * we changed it and we are not editing a new file. | |
| 2870 */ | |
| 2871 if (lines_moved || in_left) | |
| 2872 buf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 2873 if (!newfile && db_idx >= 0 && in_left) | |
| 2874 buf->b_ml.ml_flags |= ML_LOCKED_POS; | |
| 2875 mf_put(mfp, hp_new, TRUE, FALSE); | |
| 2876 | |
| 2877 /* | |
| 2878 * flush the old data block | |
| 2879 * set ml_locked_lineadd to 0, because the updating of the | |
| 2880 * pointer blocks is done below | |
| 2881 */ | |
| 2882 lineadd = buf->b_ml.ml_locked_lineadd; | |
| 2883 buf->b_ml.ml_locked_lineadd = 0; | |
| 2884 ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush data block */ | |
| 2885 | |
| 2886 /* | |
| 2887 * update pointer blocks for the new data block | |
| 2888 */ | |
| 2889 for (stack_idx = buf->b_ml.ml_stack_top - 1; stack_idx >= 0; | |
| 2890 --stack_idx) | |
| 2891 { | |
| 2892 ip = &(buf->b_ml.ml_stack[stack_idx]); | |
| 2893 pb_idx = ip->ip_index; | |
| 2894 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
| 2895 return FAIL; | |
| 2896 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
| 2897 if (pp->pb_id != PTR_ID) | |
| 2898 { | |
| 2899 EMSG(_("E317: pointer block id wrong 3")); | |
| 2900 mf_put(mfp, hp, FALSE, FALSE); | |
| 2901 return FAIL; | |
| 2902 } | |
| 2903 /* | |
| 2904 * TODO: If the pointer block is full and we are adding at the end | |
| 2905 * try to insert in front of the next block | |
| 2906 */ | |
| 2907 /* block not full, add one entry */ | |
| 2908 if (pp->pb_count < pp->pb_count_max) | |
| 2909 { | |
| 2910 if (pb_idx + 1 < (int)pp->pb_count) | |
| 2911 mch_memmove(&pp->pb_pointer[pb_idx + 2], | |
| 2912 &pp->pb_pointer[pb_idx + 1], | |
| 2913 (size_t)(pp->pb_count - pb_idx - 1) * sizeof(PTR_EN)); | |
| 2914 ++pp->pb_count; | |
| 2915 pp->pb_pointer[pb_idx].pe_line_count = line_count_left; | |
| 2916 pp->pb_pointer[pb_idx].pe_bnum = bnum_left; | |
| 2917 pp->pb_pointer[pb_idx].pe_page_count = page_count_left; | |
| 2918 pp->pb_pointer[pb_idx + 1].pe_line_count = line_count_right; | |
| 2919 pp->pb_pointer[pb_idx + 1].pe_bnum = bnum_right; | |
| 2920 pp->pb_pointer[pb_idx + 1].pe_page_count = page_count_right; | |
| 2921 | |
| 2922 if (lnum_left != 0) | |
| 2923 pp->pb_pointer[pb_idx].pe_old_lnum = lnum_left; | |
| 2924 if (lnum_right != 0) | |
| 2925 pp->pb_pointer[pb_idx + 1].pe_old_lnum = lnum_right; | |
| 2926 | |
| 2927 mf_put(mfp, hp, TRUE, FALSE); | |
| 2928 buf->b_ml.ml_stack_top = stack_idx + 1; /* truncate stack */ | |
| 2929 | |
| 2930 if (lineadd) | |
| 2931 { | |
| 2932 --(buf->b_ml.ml_stack_top); | |
| 1167 | 2933 /* fix line count for rest of blocks in the stack */ |
| 7 | 2934 ml_lineadd(buf, lineadd); |
| 2935 /* fix stack itself */ | |
| 2936 buf->b_ml.ml_stack[buf->b_ml.ml_stack_top].ip_high += | |
| 2937 lineadd; | |
| 2938 ++(buf->b_ml.ml_stack_top); | |
| 2939 } | |
| 2940 | |
| 2941 /* | |
| 2942 * We are finished, break the loop here. | |
| 2943 */ | |
| 2944 break; | |
| 2945 } | |
| 2946 else /* pointer block full */ | |
| 2947 { | |
| 2948 /* | |
| 2949 * split the pointer block | |
| 2950 * allocate a new pointer block | |
| 2951 * move some of the pointer into the new block | |
| 2952 * prepare for updating the parent block | |
| 2953 */ | |
| 2954 for (;;) /* do this twice when splitting block 1 */ | |
| 2955 { | |
| 2956 hp_new = ml_new_ptr(mfp); | |
| 2957 if (hp_new == NULL) /* TODO: try to fix tree */ | |
| 2958 return FAIL; | |
| 2959 pp_new = (PTR_BL *)(hp_new->bh_data); | |
| 2960 | |
| 2961 if (hp->bh_bnum != 1) | |
| 2962 break; | |
| 2963 | |
| 2964 /* | |
| 2965 * if block 1 becomes full the tree is given an extra level | |
| 2966 * The pointers from block 1 are moved into the new block. | |
| 2967 * block 1 is updated to point to the new block | |
| 2968 * then continue to split the new block | |
| 2969 */ | |
| 2970 mch_memmove(pp_new, pp, (size_t)page_size); | |
| 2971 pp->pb_count = 1; | |
| 2972 pp->pb_pointer[0].pe_bnum = hp_new->bh_bnum; | |
| 2973 pp->pb_pointer[0].pe_line_count = buf->b_ml.ml_line_count; | |
| 2974 pp->pb_pointer[0].pe_old_lnum = 1; | |
| 2975 pp->pb_pointer[0].pe_page_count = 1; | |
| 2976 mf_put(mfp, hp, TRUE, FALSE); /* release block 1 */ | |
| 2977 hp = hp_new; /* new block is to be split */ | |
| 2978 pp = pp_new; | |
| 2979 CHECK(stack_idx != 0, _("stack_idx should be 0")); | |
| 2980 ip->ip_index = 0; | |
| 2981 ++stack_idx; /* do block 1 again later */ | |
| 2982 } | |
| 2983 /* | |
| 2984 * move the pointers after the current one to the new block | |
| 2985 * If there are none, the new entry will be in the new block. | |
| 2986 */ | |
| 2987 total_moved = pp->pb_count - pb_idx - 1; | |
| 2988 if (total_moved) | |
| 2989 { | |
| 2990 mch_memmove(&pp_new->pb_pointer[0], | |
| 2991 &pp->pb_pointer[pb_idx + 1], | |
| 2992 (size_t)(total_moved) * sizeof(PTR_EN)); | |
| 2993 pp_new->pb_count = total_moved; | |
| 2994 pp->pb_count -= total_moved - 1; | |
| 2995 pp->pb_pointer[pb_idx + 1].pe_bnum = bnum_right; | |
| 2996 pp->pb_pointer[pb_idx + 1].pe_line_count = line_count_right; | |
| 2997 pp->pb_pointer[pb_idx + 1].pe_page_count = page_count_right; | |
| 2998 if (lnum_right) | |
| 2999 pp->pb_pointer[pb_idx + 1].pe_old_lnum = lnum_right; | |
| 3000 } | |
| 3001 else | |
| 3002 { | |
| 3003 pp_new->pb_count = 1; | |
| 3004 pp_new->pb_pointer[0].pe_bnum = bnum_right; | |
| 3005 pp_new->pb_pointer[0].pe_line_count = line_count_right; | |
| 3006 pp_new->pb_pointer[0].pe_page_count = page_count_right; | |
| 3007 pp_new->pb_pointer[0].pe_old_lnum = lnum_right; | |
| 3008 } | |
| 3009 pp->pb_pointer[pb_idx].pe_bnum = bnum_left; | |
| 3010 pp->pb_pointer[pb_idx].pe_line_count = line_count_left; | |
| 3011 pp->pb_pointer[pb_idx].pe_page_count = page_count_left; | |
| 3012 if (lnum_left) | |
| 3013 pp->pb_pointer[pb_idx].pe_old_lnum = lnum_left; | |
| 3014 lnum_left = 0; | |
| 3015 lnum_right = 0; | |
| 3016 | |
| 3017 /* | |
| 3018 * recompute line counts | |
| 3019 */ | |
| 3020 line_count_right = 0; | |
| 3021 for (i = 0; i < (int)pp_new->pb_count; ++i) | |
| 3022 line_count_right += pp_new->pb_pointer[i].pe_line_count; | |
| 3023 line_count_left = 0; | |
| 3024 for (i = 0; i < (int)pp->pb_count; ++i) | |
| 3025 line_count_left += pp->pb_pointer[i].pe_line_count; | |
| 3026 | |
| 3027 bnum_left = hp->bh_bnum; | |
| 3028 bnum_right = hp_new->bh_bnum; | |
| 3029 page_count_left = 1; | |
| 3030 page_count_right = 1; | |
| 3031 mf_put(mfp, hp, TRUE, FALSE); | |
| 3032 mf_put(mfp, hp_new, TRUE, FALSE); | |
| 3033 } | |
| 3034 } | |
| 3035 | |
| 3036 /* | |
| 3037 * Safety check: fallen out of for loop? | |
| 3038 */ | |
| 3039 if (stack_idx < 0) | |
| 3040 { | |
| 3041 EMSG(_("E318: Updated too many blocks?")); | |
| 3042 buf->b_ml.ml_stack_top = 0; /* invalidate stack */ | |
| 3043 } | |
| 3044 } | |
| 3045 | |
| 3046 #ifdef FEAT_BYTEOFF | |
| 3047 /* The line was inserted below 'lnum' */ | |
| 3048 ml_updatechunk(buf, lnum + 1, (long)len, ML_CHNK_ADDLINE); | |
| 3049 #endif | |
| 3050 #ifdef FEAT_NETBEANS_INTG | |
| 2210 | 3051 if (netbeans_active()) |
| 7 | 3052 { |
| 3053 if (STRLEN(line) > 0) | |
| 835 | 3054 netbeans_inserted(buf, lnum+1, (colnr_T)0, line, (int)STRLEN(line)); |
| 34 | 3055 netbeans_inserted(buf, lnum+1, (colnr_T)STRLEN(line), |
| 7 | 3056 (char_u *)"\n", 1); |
| 3057 } | |
| 3058 #endif | |
| 3059 return OK; | |
| 3060 } | |
| 3061 | |
| 3062 /* | |
| 625 | 3063 * Replace line lnum, with buffering, in current buffer. |
| 7 | 3064 * |
| 720 | 3065 * If "copy" is TRUE, make a copy of the line, otherwise the line has been |
| 7 | 3066 * copied to allocated memory already. |
| 3067 * | |
| 3068 * Check: The caller of this function should probably also call | |
| 3069 * changed_lines(), unless update_screen(NOT_VALID) is used. | |
| 3070 * | |
| 3071 * return FAIL for failure, OK otherwise | |
| 3072 */ | |
| 3073 int | |
| 3074 ml_replace(lnum, line, copy) | |
| 3075 linenr_T lnum; | |
| 3076 char_u *line; | |
| 3077 int copy; | |
| 3078 { | |
| 3079 if (line == NULL) /* just checking... */ | |
| 3080 return FAIL; | |
| 3081 | |
| 3082 /* When starting up, we might still need to create the memfile */ | |
|
2394
a3aca345aafa
Add the 'undoreload' option to be able to undo a file reload.
Bram Moolenaar <bram@vim.org>
parents:
2360
diff
changeset
|
3083 if (curbuf->b_ml.ml_mfp == NULL && open_buffer(FALSE, NULL, 0) == FAIL) |
| 7 | 3084 return FAIL; |
| 3085 | |
| 3086 if (copy && (line = vim_strsave(line)) == NULL) /* allocate memory */ | |
| 3087 return FAIL; | |
| 3088 #ifdef FEAT_NETBEANS_INTG | |
| 2210 | 3089 if (netbeans_active()) |
| 7 | 3090 { |
| 3091 netbeans_removed(curbuf, lnum, 0, (long)STRLEN(ml_get(lnum))); | |
| 835 | 3092 netbeans_inserted(curbuf, lnum, 0, line, (int)STRLEN(line)); |
| 7 | 3093 } |
| 3094 #endif | |
| 3095 if (curbuf->b_ml.ml_line_lnum != lnum) /* other line buffered */ | |
| 3096 ml_flush_line(curbuf); /* flush it */ | |
| 3097 else if (curbuf->b_ml.ml_flags & ML_LINE_DIRTY) /* same line allocated */ | |
| 3098 vim_free(curbuf->b_ml.ml_line_ptr); /* free it */ | |
| 3099 curbuf->b_ml.ml_line_ptr = line; | |
| 3100 curbuf->b_ml.ml_line_lnum = lnum; | |
| 3101 curbuf->b_ml.ml_flags = (curbuf->b_ml.ml_flags | ML_LINE_DIRTY) & ~ML_EMPTY; | |
| 3102 | |
| 3103 return OK; | |
| 3104 } | |
| 3105 | |
| 3106 /* | |
| 625 | 3107 * Delete line 'lnum' in the current buffer. |
| 7 | 3108 * |
| 3109 * Check: The caller of this function should probably also call | |
| 3110 * deleted_lines() after this. | |
| 3111 * | |
| 3112 * return FAIL for failure, OK otherwise | |
| 3113 */ | |
| 3114 int | |
| 3115 ml_delete(lnum, message) | |
| 3116 linenr_T lnum; | |
| 3117 int message; | |
| 3118 { | |
| 3119 ml_flush_line(curbuf); | |
| 3120 return ml_delete_int(curbuf, lnum, message); | |
| 3121 } | |
| 3122 | |
| 3123 static int | |
| 3124 ml_delete_int(buf, lnum, message) | |
| 3125 buf_T *buf; | |
| 3126 linenr_T lnum; | |
| 3127 int message; | |
| 3128 { | |
| 3129 bhdr_T *hp; | |
| 3130 memfile_T *mfp; | |
| 3131 DATA_BL *dp; | |
| 3132 PTR_BL *pp; | |
| 3133 infoptr_T *ip; | |
| 3134 int count; /* number of entries in block */ | |
| 3135 int idx; | |
| 3136 int stack_idx; | |
| 3137 int text_start; | |
| 3138 int line_start; | |
| 3139 long line_size; | |
| 3140 int i; | |
| 3141 | |
| 3142 if (lnum < 1 || lnum > buf->b_ml.ml_line_count) | |
| 3143 return FAIL; | |
| 3144 | |
| 3145 if (lowest_marked && lowest_marked > lnum) | |
| 3146 lowest_marked--; | |
| 3147 | |
| 3148 /* | |
| 3149 * If the file becomes empty the last line is replaced by an empty line. | |
| 3150 */ | |
| 3151 if (buf->b_ml.ml_line_count == 1) /* file becomes empty */ | |
| 3152 { | |
| 3153 if (message | |
| 3154 #ifdef FEAT_NETBEANS_INTG | |
| 3155 && !netbeansSuppressNoLines | |
| 3156 #endif | |
| 3157 ) | |
| 680 | 3158 set_keep_msg((char_u *)_(no_lines_msg), 0); |
| 3159 | |
| 7 | 3160 /* FEAT_BYTEOFF already handled in there, dont worry 'bout it below */ |
| 3161 i = ml_replace((linenr_T)1, (char_u *)"", TRUE); | |
| 3162 buf->b_ml.ml_flags |= ML_EMPTY; | |
| 3163 | |
| 3164 return i; | |
| 3165 } | |
| 3166 | |
| 3167 /* | |
| 3168 * find the data block containing the line | |
| 3169 * This also fills the stack with the blocks from the root to the data block | |
| 3170 * This also releases any locked block. | |
| 3171 */ | |
| 3172 mfp = buf->b_ml.ml_mfp; | |
| 3173 if (mfp == NULL) | |
| 3174 return FAIL; | |
| 3175 | |
| 3176 if ((hp = ml_find_line(buf, lnum, ML_DELETE)) == NULL) | |
| 3177 return FAIL; | |
| 3178 | |
| 3179 dp = (DATA_BL *)(hp->bh_data); | |
| 3180 /* compute line count before the delete */ | |
| 3181 count = (long)(buf->b_ml.ml_locked_high) | |
| 3182 - (long)(buf->b_ml.ml_locked_low) + 2; | |
| 3183 idx = lnum - buf->b_ml.ml_locked_low; | |
| 3184 | |
| 3185 --buf->b_ml.ml_line_count; | |
| 3186 | |
| 3187 line_start = ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 3188 if (idx == 0) /* first line in block, text at the end */ | |
| 3189 line_size = dp->db_txt_end - line_start; | |
| 3190 else | |
| 3191 line_size = ((dp->db_index[idx - 1]) & DB_INDEX_MASK) - line_start; | |
| 3192 | |
| 3193 #ifdef FEAT_NETBEANS_INTG | |
| 2210 | 3194 if (netbeans_active()) |
| 34 | 3195 netbeans_removed(buf, lnum, 0, (long)line_size); |
| 7 | 3196 #endif |
| 3197 | |
| 3198 /* | |
| 3199 * special case: If there is only one line in the data block it becomes empty. | |
| 3200 * Then we have to remove the entry, pointing to this data block, from the | |
| 3201 * pointer block. If this pointer block also becomes empty, we go up another | |
| 3202 * block, and so on, up to the root if necessary. | |
| 3203 * The line counts in the pointer blocks have already been adjusted by | |
| 3204 * ml_find_line(). | |
| 3205 */ | |
| 3206 if (count == 1) | |
| 3207 { | |
| 3208 mf_free(mfp, hp); /* free the data block */ | |
| 3209 buf->b_ml.ml_locked = NULL; | |
| 3210 | |
| 3211 for (stack_idx = buf->b_ml.ml_stack_top - 1; stack_idx >= 0; --stack_idx) | |
| 3212 { | |
| 3213 buf->b_ml.ml_stack_top = 0; /* stack is invalid when failing */ | |
| 3214 ip = &(buf->b_ml.ml_stack[stack_idx]); | |
| 3215 idx = ip->ip_index; | |
| 3216 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
| 3217 return FAIL; | |
| 3218 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
| 3219 if (pp->pb_id != PTR_ID) | |
| 3220 { | |
| 3221 EMSG(_("E317: pointer block id wrong 4")); | |
| 3222 mf_put(mfp, hp, FALSE, FALSE); | |
| 3223 return FAIL; | |
| 3224 } | |
| 3225 count = --(pp->pb_count); | |
| 3226 if (count == 0) /* the pointer block becomes empty! */ | |
| 3227 mf_free(mfp, hp); | |
| 3228 else | |
| 3229 { | |
| 3230 if (count != idx) /* move entries after the deleted one */ | |
| 3231 mch_memmove(&pp->pb_pointer[idx], &pp->pb_pointer[idx + 1], | |
| 3232 (size_t)(count - idx) * sizeof(PTR_EN)); | |
| 3233 mf_put(mfp, hp, TRUE, FALSE); | |
| 3234 | |
| 3235 buf->b_ml.ml_stack_top = stack_idx; /* truncate stack */ | |
| 1167 | 3236 /* fix line count for rest of blocks in the stack */ |
| 3237 if (buf->b_ml.ml_locked_lineadd != 0) | |
| 7 | 3238 { |
| 3239 ml_lineadd(buf, buf->b_ml.ml_locked_lineadd); | |
| 3240 buf->b_ml.ml_stack[buf->b_ml.ml_stack_top].ip_high += | |
| 1167 | 3241 buf->b_ml.ml_locked_lineadd; |
| 7 | 3242 } |
| 3243 ++(buf->b_ml.ml_stack_top); | |
| 3244 | |
| 3245 break; | |
| 3246 } | |
| 3247 } | |
| 3248 CHECK(stack_idx < 0, _("deleted block 1?")); | |
| 3249 } | |
| 3250 else | |
| 3251 { | |
| 3252 /* | |
| 3253 * delete the text by moving the next lines forwards | |
| 3254 */ | |
| 3255 text_start = dp->db_txt_start; | |
| 3256 mch_memmove((char *)dp + text_start + line_size, | |
| 3257 (char *)dp + text_start, (size_t)(line_start - text_start)); | |
| 3258 | |
| 3259 /* | |
| 3260 * delete the index by moving the next indexes backwards | |
| 3261 * Adjust the indexes for the text movement. | |
| 3262 */ | |
| 3263 for (i = idx; i < count - 1; ++i) | |
| 3264 dp->db_index[i] = dp->db_index[i + 1] + line_size; | |
| 3265 | |
| 3266 dp->db_free += line_size + INDEX_SIZE; | |
| 3267 dp->db_txt_start += line_size; | |
| 3268 --(dp->db_line_count); | |
| 3269 | |
| 3270 /* | |
| 3271 * mark the block dirty and make sure it is in the file (for recovery) | |
| 3272 */ | |
| 3273 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 3274 } | |
| 3275 | |
| 3276 #ifdef FEAT_BYTEOFF | |
| 3277 ml_updatechunk(buf, lnum, line_size, ML_CHNK_DELLINE); | |
| 3278 #endif | |
| 3279 return OK; | |
| 3280 } | |
| 3281 | |
| 3282 /* | |
| 3283 * set the B_MARKED flag for line 'lnum' | |
| 3284 */ | |
| 3285 void | |
| 3286 ml_setmarked(lnum) | |
| 3287 linenr_T lnum; | |
| 3288 { | |
| 3289 bhdr_T *hp; | |
| 3290 DATA_BL *dp; | |
| 3291 /* invalid line number */ | |
| 3292 if (lnum < 1 || lnum > curbuf->b_ml.ml_line_count | |
| 3293 || curbuf->b_ml.ml_mfp == NULL) | |
| 3294 return; /* give error message? */ | |
| 3295 | |
| 3296 if (lowest_marked == 0 || lowest_marked > lnum) | |
| 3297 lowest_marked = lnum; | |
| 3298 | |
| 3299 /* | |
| 3300 * find the data block containing the line | |
| 3301 * This also fills the stack with the blocks from the root to the data block | |
| 3302 * This also releases any locked block. | |
| 3303 */ | |
| 3304 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
| 3305 return; /* give error message? */ | |
| 3306 | |
| 3307 dp = (DATA_BL *)(hp->bh_data); | |
| 3308 dp->db_index[lnum - curbuf->b_ml.ml_locked_low] |= DB_MARKED; | |
| 3309 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 3310 } | |
| 3311 | |
| 3312 /* | |
| 3313 * find the first line with its B_MARKED flag set | |
| 3314 */ | |
| 3315 linenr_T | |
| 3316 ml_firstmarked() | |
| 3317 { | |
| 3318 bhdr_T *hp; | |
| 3319 DATA_BL *dp; | |
| 3320 linenr_T lnum; | |
| 3321 int i; | |
| 3322 | |
| 3323 if (curbuf->b_ml.ml_mfp == NULL) | |
| 3324 return (linenr_T) 0; | |
| 3325 | |
| 3326 /* | |
| 3327 * The search starts with lowest_marked line. This is the last line where | |
| 3328 * a mark was found, adjusted by inserting/deleting lines. | |
| 3329 */ | |
| 3330 for (lnum = lowest_marked; lnum <= curbuf->b_ml.ml_line_count; ) | |
| 3331 { | |
| 3332 /* | |
| 3333 * Find the data block containing the line. | |
| 3334 * This also fills the stack with the blocks from the root to the data | |
| 3335 * block This also releases any locked block. | |
| 3336 */ | |
| 3337 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
| 3338 return (linenr_T)0; /* give error message? */ | |
| 3339 | |
| 3340 dp = (DATA_BL *)(hp->bh_data); | |
| 3341 | |
| 3342 for (i = lnum - curbuf->b_ml.ml_locked_low; | |
| 3343 lnum <= curbuf->b_ml.ml_locked_high; ++i, ++lnum) | |
| 3344 if ((dp->db_index[i]) & DB_MARKED) | |
| 3345 { | |
| 3346 (dp->db_index[i]) &= DB_INDEX_MASK; | |
| 3347 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 3348 lowest_marked = lnum + 1; | |
| 3349 return lnum; | |
| 3350 } | |
| 3351 } | |
| 3352 | |
| 3353 return (linenr_T) 0; | |
| 3354 } | |
| 3355 | |
| 3356 #if 0 /* not used */ | |
| 3357 /* | |
| 3358 * return TRUE if line 'lnum' has a mark | |
| 3359 */ | |
| 3360 int | |
| 3361 ml_has_mark(lnum) | |
| 3362 linenr_T lnum; | |
| 3363 { | |
| 3364 bhdr_T *hp; | |
| 3365 DATA_BL *dp; | |
| 3366 | |
| 3367 if (curbuf->b_ml.ml_mfp == NULL | |
| 3368 || (hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
| 3369 return FALSE; | |
| 3370 | |
| 3371 dp = (DATA_BL *)(hp->bh_data); | |
| 3372 return (int)((dp->db_index[lnum - curbuf->b_ml.ml_locked_low]) & DB_MARKED); | |
| 3373 } | |
| 3374 #endif | |
| 3375 | |
| 3376 /* | |
| 3377 * clear all DB_MARKED flags | |
| 3378 */ | |
| 3379 void | |
| 3380 ml_clearmarked() | |
| 3381 { | |
| 3382 bhdr_T *hp; | |
| 3383 DATA_BL *dp; | |
| 3384 linenr_T lnum; | |
| 3385 int i; | |
| 3386 | |
| 3387 if (curbuf->b_ml.ml_mfp == NULL) /* nothing to do */ | |
| 3388 return; | |
| 3389 | |
| 3390 /* | |
| 3391 * The search starts with line lowest_marked. | |
| 3392 */ | |
| 3393 for (lnum = lowest_marked; lnum <= curbuf->b_ml.ml_line_count; ) | |
| 3394 { | |
| 3395 /* | |
| 3396 * Find the data block containing the line. | |
| 3397 * This also fills the stack with the blocks from the root to the data | |
| 3398 * block and releases any locked block. | |
| 3399 */ | |
| 3400 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
| 3401 return; /* give error message? */ | |
| 3402 | |
| 3403 dp = (DATA_BL *)(hp->bh_data); | |
| 3404 | |
| 3405 for (i = lnum - curbuf->b_ml.ml_locked_low; | |
| 3406 lnum <= curbuf->b_ml.ml_locked_high; ++i, ++lnum) | |
| 3407 if ((dp->db_index[i]) & DB_MARKED) | |
| 3408 { | |
| 3409 (dp->db_index[i]) &= DB_INDEX_MASK; | |
| 3410 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 3411 } | |
| 3412 } | |
| 3413 | |
| 3414 lowest_marked = 0; | |
| 3415 return; | |
| 3416 } | |
| 3417 | |
| 3418 /* | |
| 3419 * flush ml_line if necessary | |
| 3420 */ | |
| 3421 static void | |
| 3422 ml_flush_line(buf) | |
| 3423 buf_T *buf; | |
| 3424 { | |
| 3425 bhdr_T *hp; | |
| 3426 DATA_BL *dp; | |
| 3427 linenr_T lnum; | |
| 3428 char_u *new_line; | |
| 3429 char_u *old_line; | |
| 3430 colnr_T new_len; | |
| 3431 int old_len; | |
| 3432 int extra; | |
| 3433 int idx; | |
| 3434 int start; | |
| 3435 int count; | |
| 3436 int i; | |
|
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diff
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|
3437 static int entered = FALSE; |
| 7 | 3438 |
| 3439 if (buf->b_ml.ml_line_lnum == 0 || buf->b_ml.ml_mfp == NULL) | |
| 3440 return; /* nothing to do */ | |
| 3441 | |
| 3442 if (buf->b_ml.ml_flags & ML_LINE_DIRTY) | |
| 3443 { | |
|
2075
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2003
diff
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|
3444 /* This code doesn't work recursively, but Netbeans may call back here |
|
903fcd726d90
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2003
diff
changeset
|
3445 * when obtaining the cursor position. */ |
|
903fcd726d90
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parents:
2003
diff
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|
3446 if (entered) |
|
903fcd726d90
updated for version 7.2.359
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parents:
2003
diff
changeset
|
3447 return; |
|
903fcd726d90
updated for version 7.2.359
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parents:
2003
diff
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|
3448 entered = TRUE; |
|
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2003
diff
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|
3449 |
| 7 | 3450 lnum = buf->b_ml.ml_line_lnum; |
| 3451 new_line = buf->b_ml.ml_line_ptr; | |
| 3452 | |
| 3453 hp = ml_find_line(buf, lnum, ML_FIND); | |
| 3454 if (hp == NULL) | |
| 3455 EMSGN(_("E320: Cannot find line %ld"), lnum); | |
| 3456 else | |
| 3457 { | |
| 3458 dp = (DATA_BL *)(hp->bh_data); | |
| 3459 idx = lnum - buf->b_ml.ml_locked_low; | |
| 3460 start = ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 3461 old_line = (char_u *)dp + start; | |
| 3462 if (idx == 0) /* line is last in block */ | |
| 3463 old_len = dp->db_txt_end - start; | |
| 3464 else /* text of previous line follows */ | |
| 3465 old_len = (dp->db_index[idx - 1] & DB_INDEX_MASK) - start; | |
| 3466 new_len = (colnr_T)STRLEN(new_line) + 1; | |
| 3467 extra = new_len - old_len; /* negative if lines gets smaller */ | |
| 3468 | |
| 3469 /* | |
| 3470 * if new line fits in data block, replace directly | |
| 3471 */ | |
| 3472 if ((int)dp->db_free >= extra) | |
| 3473 { | |
| 3474 /* if the length changes and there are following lines */ | |
| 3475 count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low + 1; | |
| 3476 if (extra != 0 && idx < count - 1) | |
| 3477 { | |
| 3478 /* move text of following lines */ | |
| 3479 mch_memmove((char *)dp + dp->db_txt_start - extra, | |
| 3480 (char *)dp + dp->db_txt_start, | |
| 3481 (size_t)(start - dp->db_txt_start)); | |
| 3482 | |
| 3483 /* adjust pointers of this and following lines */ | |
| 3484 for (i = idx + 1; i < count; ++i) | |
| 3485 dp->db_index[i] -= extra; | |
| 3486 } | |
| 3487 dp->db_index[idx] -= extra; | |
| 3488 | |
| 3489 /* adjust free space */ | |
| 3490 dp->db_free -= extra; | |
| 3491 dp->db_txt_start -= extra; | |
| 3492 | |
| 3493 /* copy new line into the data block */ | |
| 3494 mch_memmove(old_line - extra, new_line, (size_t)new_len); | |
| 3495 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 3496 #ifdef FEAT_BYTEOFF | |
| 3497 /* The else case is already covered by the insert and delete */ | |
| 3498 ml_updatechunk(buf, lnum, (long)extra, ML_CHNK_UPDLINE); | |
| 3499 #endif | |
| 3500 } | |
| 3501 else | |
| 3502 { | |
| 3503 /* | |
| 3504 * Cannot do it in one data block: Delete and append. | |
| 3505 * Append first, because ml_delete_int() cannot delete the | |
| 3506 * last line in a buffer, which causes trouble for a buffer | |
| 3507 * that has only one line. | |
| 3508 * Don't forget to copy the mark! | |
| 3509 */ | |
| 3510 /* How about handling errors??? */ | |
| 3511 (void)ml_append_int(buf, lnum, new_line, new_len, FALSE, | |
| 3512 (dp->db_index[idx] & DB_MARKED)); | |
| 3513 (void)ml_delete_int(buf, lnum, FALSE); | |
| 3514 } | |
| 3515 } | |
| 3516 vim_free(new_line); | |
|
2075
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diff
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|
3517 |
|
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diff
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|
3518 entered = FALSE; |
| 7 | 3519 } |
| 3520 | |
| 3521 buf->b_ml.ml_line_lnum = 0; | |
| 3522 } | |
| 3523 | |
| 3524 /* | |
| 3525 * create a new, empty, data block | |
| 3526 */ | |
| 3527 static bhdr_T * | |
| 3528 ml_new_data(mfp, negative, page_count) | |
| 3529 memfile_T *mfp; | |
| 3530 int negative; | |
| 3531 int page_count; | |
| 3532 { | |
| 3533 bhdr_T *hp; | |
| 3534 DATA_BL *dp; | |
| 3535 | |
| 3536 if ((hp = mf_new(mfp, negative, page_count)) == NULL) | |
| 3537 return NULL; | |
| 3538 | |
| 3539 dp = (DATA_BL *)(hp->bh_data); | |
| 3540 dp->db_id = DATA_ID; | |
| 3541 dp->db_txt_start = dp->db_txt_end = page_count * mfp->mf_page_size; | |
| 3542 dp->db_free = dp->db_txt_start - HEADER_SIZE; | |
| 3543 dp->db_line_count = 0; | |
| 3544 | |
| 3545 return hp; | |
| 3546 } | |
| 3547 | |
| 3548 /* | |
| 3549 * create a new, empty, pointer block | |
| 3550 */ | |
| 3551 static bhdr_T * | |
| 3552 ml_new_ptr(mfp) | |
| 3553 memfile_T *mfp; | |
| 3554 { | |
| 3555 bhdr_T *hp; | |
| 3556 PTR_BL *pp; | |
| 3557 | |
| 3558 if ((hp = mf_new(mfp, FALSE, 1)) == NULL) | |
| 3559 return NULL; | |
| 3560 | |
| 3561 pp = (PTR_BL *)(hp->bh_data); | |
| 3562 pp->pb_id = PTR_ID; | |
| 3563 pp->pb_count = 0; | |
|
2240
6b4879aea261
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Bram Moolenaar <bram@vim.org>
parents:
2221
diff
changeset
|
3564 pp->pb_count_max = (short_u)((mfp->mf_page_size - sizeof(PTR_BL)) |
|
6b4879aea261
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Bram Moolenaar <bram@vim.org>
parents:
2221
diff
changeset
|
3565 / sizeof(PTR_EN) + 1); |
| 7 | 3566 |
| 3567 return hp; | |
| 3568 } | |
| 3569 | |
| 3570 /* | |
| 3571 * lookup line 'lnum' in a memline | |
| 3572 * | |
| 3573 * action: if ML_DELETE or ML_INSERT the line count is updated while searching | |
| 3574 * if ML_FLUSH only flush a locked block | |
| 3575 * if ML_FIND just find the line | |
| 3576 * | |
| 3577 * If the block was found it is locked and put in ml_locked. | |
| 3578 * The stack is updated to lead to the locked block. The ip_high field in | |
| 3579 * the stack is updated to reflect the last line in the block AFTER the | |
| 3580 * insert or delete, also if the pointer block has not been updated yet. But | |
| 1167 | 3581 * if ml_locked != NULL ml_locked_lineadd must be added to ip_high. |
| 7 | 3582 * |
| 3583 * return: NULL for failure, pointer to block header otherwise | |
| 3584 */ | |
| 3585 static bhdr_T * | |
| 3586 ml_find_line(buf, lnum, action) | |
| 3587 buf_T *buf; | |
| 3588 linenr_T lnum; | |
| 3589 int action; | |
| 3590 { | |
| 3591 DATA_BL *dp; | |
| 3592 PTR_BL *pp; | |
| 3593 infoptr_T *ip; | |
| 3594 bhdr_T *hp; | |
| 3595 memfile_T *mfp; | |
| 3596 linenr_T t; | |
| 3597 blocknr_T bnum, bnum2; | |
| 3598 int dirty; | |
| 3599 linenr_T low, high; | |
| 3600 int top; | |
| 3601 int page_count; | |
| 3602 int idx; | |
| 3603 | |
| 3604 mfp = buf->b_ml.ml_mfp; | |
| 3605 | |
| 3606 /* | |
| 3607 * If there is a locked block check if the wanted line is in it. | |
| 3608 * If not, flush and release the locked block. | |
| 3609 * Don't do this for ML_INSERT_SAME, because the stack need to be updated. | |
| 3610 * Don't do this for ML_FLUSH, because we want to flush the locked block. | |
| 1066 | 3611 * Don't do this when 'swapfile' is reset, we want to load all the blocks. |
| 7 | 3612 */ |
| 3613 if (buf->b_ml.ml_locked) | |
| 3614 { | |
| 1066 | 3615 if (ML_SIMPLE(action) |
| 3616 && buf->b_ml.ml_locked_low <= lnum | |
| 3617 && buf->b_ml.ml_locked_high >= lnum | |
| 3618 && !mf_dont_release) | |
| 7 | 3619 { |
| 1066 | 3620 /* remember to update pointer blocks and stack later */ |
| 7 | 3621 if (action == ML_INSERT) |
| 3622 { | |
| 3623 ++(buf->b_ml.ml_locked_lineadd); | |
| 3624 ++(buf->b_ml.ml_locked_high); | |
| 3625 } | |
| 3626 else if (action == ML_DELETE) | |
| 3627 { | |
| 3628 --(buf->b_ml.ml_locked_lineadd); | |
| 3629 --(buf->b_ml.ml_locked_high); | |
| 3630 } | |
| 3631 return (buf->b_ml.ml_locked); | |
| 3632 } | |
| 3633 | |
| 3634 mf_put(mfp, buf->b_ml.ml_locked, buf->b_ml.ml_flags & ML_LOCKED_DIRTY, | |
| 3635 buf->b_ml.ml_flags & ML_LOCKED_POS); | |
| 3636 buf->b_ml.ml_locked = NULL; | |
| 3637 | |
| 1167 | 3638 /* |
| 3639 * If lines have been added or deleted in the locked block, need to | |
| 3640 * update the line count in pointer blocks. | |
| 3641 */ | |
| 3642 if (buf->b_ml.ml_locked_lineadd != 0) | |
| 7 | 3643 ml_lineadd(buf, buf->b_ml.ml_locked_lineadd); |
| 3644 } | |
| 3645 | |
| 3646 if (action == ML_FLUSH) /* nothing else to do */ | |
| 3647 return NULL; | |
| 3648 | |
| 3649 bnum = 1; /* start at the root of the tree */ | |
| 3650 page_count = 1; | |
| 3651 low = 1; | |
| 3652 high = buf->b_ml.ml_line_count; | |
| 3653 | |
| 3654 if (action == ML_FIND) /* first try stack entries */ | |
| 3655 { | |
| 3656 for (top = buf->b_ml.ml_stack_top - 1; top >= 0; --top) | |
| 3657 { | |
| 3658 ip = &(buf->b_ml.ml_stack[top]); | |
| 3659 if (ip->ip_low <= lnum && ip->ip_high >= lnum) | |
| 3660 { | |
| 3661 bnum = ip->ip_bnum; | |
| 3662 low = ip->ip_low; | |
| 3663 high = ip->ip_high; | |
| 3664 buf->b_ml.ml_stack_top = top; /* truncate stack at prev entry */ | |
| 3665 break; | |
| 3666 } | |
| 3667 } | |
| 3668 if (top < 0) | |
| 3669 buf->b_ml.ml_stack_top = 0; /* not found, start at the root */ | |
| 3670 } | |
| 3671 else /* ML_DELETE or ML_INSERT */ | |
| 3672 buf->b_ml.ml_stack_top = 0; /* start at the root */ | |
| 3673 | |
| 3674 /* | |
| 3675 * search downwards in the tree until a data block is found | |
| 3676 */ | |
| 3677 for (;;) | |
| 3678 { | |
| 3679 if ((hp = mf_get(mfp, bnum, page_count)) == NULL) | |
| 3680 goto error_noblock; | |
| 3681 | |
| 3682 /* | |
| 3683 * update high for insert/delete | |
| 3684 */ | |
| 3685 if (action == ML_INSERT) | |
| 3686 ++high; | |
| 3687 else if (action == ML_DELETE) | |
| 3688 --high; | |
| 3689 | |
| 3690 dp = (DATA_BL *)(hp->bh_data); | |
| 3691 if (dp->db_id == DATA_ID) /* data block */ | |
| 3692 { | |
| 3693 buf->b_ml.ml_locked = hp; | |
| 3694 buf->b_ml.ml_locked_low = low; | |
| 3695 buf->b_ml.ml_locked_high = high; | |
| 3696 buf->b_ml.ml_locked_lineadd = 0; | |
| 3697 buf->b_ml.ml_flags &= ~(ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 3698 return hp; | |
| 3699 } | |
| 3700 | |
| 3701 pp = (PTR_BL *)(dp); /* must be pointer block */ | |
| 3702 if (pp->pb_id != PTR_ID) | |
| 3703 { | |
| 3704 EMSG(_("E317: pointer block id wrong")); | |
| 3705 goto error_block; | |
| 3706 } | |
| 3707 | |
| 3708 if ((top = ml_add_stack(buf)) < 0) /* add new entry to stack */ | |
| 3709 goto error_block; | |
| 3710 ip = &(buf->b_ml.ml_stack[top]); | |
| 3711 ip->ip_bnum = bnum; | |
| 3712 ip->ip_low = low; | |
| 3713 ip->ip_high = high; | |
| 3714 ip->ip_index = -1; /* index not known yet */ | |
| 3715 | |
| 3716 dirty = FALSE; | |
| 3717 for (idx = 0; idx < (int)pp->pb_count; ++idx) | |
| 3718 { | |
| 3719 t = pp->pb_pointer[idx].pe_line_count; | |
| 3720 CHECK(t == 0, _("pe_line_count is zero")); | |
| 3721 if ((low += t) > lnum) | |
| 3722 { | |
| 3723 ip->ip_index = idx; | |
| 3724 bnum = pp->pb_pointer[idx].pe_bnum; | |
| 3725 page_count = pp->pb_pointer[idx].pe_page_count; | |
| 3726 high = low - 1; | |
| 3727 low -= t; | |
| 3728 | |
| 3729 /* | |
| 3730 * a negative block number may have been changed | |
| 3731 */ | |
| 3732 if (bnum < 0) | |
| 3733 { | |
| 3734 bnum2 = mf_trans_del(mfp, bnum); | |
| 3735 if (bnum != bnum2) | |
| 3736 { | |
| 3737 bnum = bnum2; | |
| 3738 pp->pb_pointer[idx].pe_bnum = bnum; | |
| 3739 dirty = TRUE; | |
| 3740 } | |
| 3741 } | |
| 3742 | |
| 3743 break; | |
| 3744 } | |
| 3745 } | |
| 3746 if (idx >= (int)pp->pb_count) /* past the end: something wrong! */ | |
| 3747 { | |
| 3748 if (lnum > buf->b_ml.ml_line_count) | |
| 3749 EMSGN(_("E322: line number out of range: %ld past the end"), | |
| 3750 lnum - buf->b_ml.ml_line_count); | |
| 3751 | |
| 3752 else | |
| 3753 EMSGN(_("E323: line count wrong in block %ld"), bnum); | |
| 3754 goto error_block; | |
| 3755 } | |
| 3756 if (action == ML_DELETE) | |
| 3757 { | |
| 3758 pp->pb_pointer[idx].pe_line_count--; | |
| 3759 dirty = TRUE; | |
| 3760 } | |
| 3761 else if (action == ML_INSERT) | |
| 3762 { | |
| 3763 pp->pb_pointer[idx].pe_line_count++; | |
| 3764 dirty = TRUE; | |
| 3765 } | |
| 3766 mf_put(mfp, hp, dirty, FALSE); | |
| 3767 } | |
| 3768 | |
| 3769 error_block: | |
| 3770 mf_put(mfp, hp, FALSE, FALSE); | |
| 3771 error_noblock: | |
| 2267 | 3772 /* |
| 3773 * If action is ML_DELETE or ML_INSERT we have to correct the tree for | |
| 3774 * the incremented/decremented line counts, because there won't be a line | |
| 3775 * inserted/deleted after all. | |
| 3776 */ | |
| 7 | 3777 if (action == ML_DELETE) |
| 3778 ml_lineadd(buf, 1); | |
| 3779 else if (action == ML_INSERT) | |
| 3780 ml_lineadd(buf, -1); | |
| 3781 buf->b_ml.ml_stack_top = 0; | |
| 3782 return NULL; | |
| 3783 } | |
| 3784 | |
| 3785 /* | |
| 3786 * add an entry to the info pointer stack | |
| 3787 * | |
| 3788 * return -1 for failure, number of the new entry otherwise | |
| 3789 */ | |
| 3790 static int | |
| 3791 ml_add_stack(buf) | |
| 3792 buf_T *buf; | |
| 3793 { | |
| 3794 int top; | |
| 3795 infoptr_T *newstack; | |
| 3796 | |
| 3797 top = buf->b_ml.ml_stack_top; | |
| 3798 | |
| 2267 | 3799 /* may have to increase the stack size */ |
| 7 | 3800 if (top == buf->b_ml.ml_stack_size) |
| 3801 { | |
| 2267 | 3802 CHECK(top > 0, _("Stack size increases")); /* more than 5 levels??? */ |
| 7 | 3803 |
| 3804 newstack = (infoptr_T *)alloc((unsigned)sizeof(infoptr_T) * | |
| 3805 (buf->b_ml.ml_stack_size + STACK_INCR)); | |
| 3806 if (newstack == NULL) | |
| 3807 return -1; | |
| 1624 | 3808 mch_memmove(newstack, buf->b_ml.ml_stack, |
| 3809 (size_t)top * sizeof(infoptr_T)); | |
| 7 | 3810 vim_free(buf->b_ml.ml_stack); |
| 3811 buf->b_ml.ml_stack = newstack; | |
| 3812 buf->b_ml.ml_stack_size += STACK_INCR; | |
| 3813 } | |
| 3814 | |
| 3815 buf->b_ml.ml_stack_top++; | |
| 3816 return top; | |
| 3817 } | |
| 3818 | |
| 3819 /* | |
| 3820 * Update the pointer blocks on the stack for inserted/deleted lines. | |
| 3821 * The stack itself is also updated. | |
| 3822 * | |
| 3823 * When a insert/delete line action fails, the line is not inserted/deleted, | |
| 3824 * but the pointer blocks have already been updated. That is fixed here by | |
| 3825 * walking through the stack. | |
| 3826 * | |
| 3827 * Count is the number of lines added, negative if lines have been deleted. | |
| 3828 */ | |
| 3829 static void | |
| 3830 ml_lineadd(buf, count) | |
| 3831 buf_T *buf; | |
| 3832 int count; | |
| 3833 { | |
| 3834 int idx; | |
| 3835 infoptr_T *ip; | |
| 3836 PTR_BL *pp; | |
| 3837 memfile_T *mfp = buf->b_ml.ml_mfp; | |
| 3838 bhdr_T *hp; | |
| 3839 | |
| 3840 for (idx = buf->b_ml.ml_stack_top - 1; idx >= 0; --idx) | |
| 3841 { | |
| 3842 ip = &(buf->b_ml.ml_stack[idx]); | |
| 3843 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
| 3844 break; | |
| 3845 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
| 3846 if (pp->pb_id != PTR_ID) | |
| 3847 { | |
| 3848 mf_put(mfp, hp, FALSE, FALSE); | |
| 3849 EMSG(_("E317: pointer block id wrong 2")); | |
| 3850 break; | |
| 3851 } | |
| 3852 pp->pb_pointer[ip->ip_index].pe_line_count += count; | |
| 3853 ip->ip_high += count; | |
| 3854 mf_put(mfp, hp, TRUE, FALSE); | |
| 3855 } | |
| 3856 } | |
| 3857 | |
|
2214
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
3858 #if defined(HAVE_READLINK) || defined(PROTO) |
| 594 | 3859 /* |
| 3860 * Resolve a symlink in the last component of a file name. | |
| 3861 * Note that f_resolve() does it for every part of the path, we don't do that | |
| 3862 * here. | |
| 3863 * If it worked returns OK and the resolved link in "buf[MAXPATHL]". | |
| 3864 * Otherwise returns FAIL. | |
| 3865 */ | |
|
2214
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
3866 int |
| 594 | 3867 resolve_symlink(fname, buf) |
| 3868 char_u *fname; | |
| 3869 char_u *buf; | |
| 3870 { | |
| 3871 char_u tmp[MAXPATHL]; | |
| 3872 int ret; | |
| 3873 int depth = 0; | |
| 3874 | |
| 3875 if (fname == NULL) | |
| 3876 return FAIL; | |
| 3877 | |
| 3878 /* Put the result so far in tmp[], starting with the original name. */ | |
| 3879 vim_strncpy(tmp, fname, MAXPATHL - 1); | |
| 3880 | |
| 3881 for (;;) | |
| 3882 { | |
| 3883 /* Limit symlink depth to 100, catch recursive loops. */ | |
| 3884 if (++depth == 100) | |
| 3885 { | |
| 3886 EMSG2(_("E773: Symlink loop for \"%s\""), fname); | |
| 3887 return FAIL; | |
| 3888 } | |
| 3889 | |
| 3890 ret = readlink((char *)tmp, (char *)buf, MAXPATHL - 1); | |
| 3891 if (ret <= 0) | |
| 3892 { | |
| 619 | 3893 if (errno == EINVAL || errno == ENOENT) |
| 594 | 3894 { |
| 619 | 3895 /* Found non-symlink or not existing file, stop here. |
| 1855 | 3896 * When at the first level use the unmodified name, skip the |
| 594 | 3897 * call to vim_FullName(). */ |
| 3898 if (depth == 1) | |
| 3899 return FAIL; | |
| 3900 | |
| 3901 /* Use the resolved name in tmp[]. */ | |
| 3902 break; | |
| 3903 } | |
| 3904 | |
| 3905 /* There must be some error reading links, use original name. */ | |
| 3906 return FAIL; | |
| 3907 } | |
| 3908 buf[ret] = NUL; | |
| 3909 | |
| 3910 /* | |
| 3911 * Check whether the symlink is relative or absolute. | |
| 3912 * If it's relative, build a new path based on the directory | |
| 3913 * portion of the filename (if any) and the path the symlink | |
| 3914 * points to. | |
| 3915 */ | |
| 3916 if (mch_isFullName(buf)) | |
| 3917 STRCPY(tmp, buf); | |
| 3918 else | |
| 3919 { | |
| 3920 char_u *tail; | |
| 3921 | |
| 3922 tail = gettail(tmp); | |
| 3923 if (STRLEN(tail) + STRLEN(buf) >= MAXPATHL) | |
| 3924 return FAIL; | |
| 3925 STRCPY(tail, buf); | |
| 3926 } | |
| 3927 } | |
| 3928 | |
| 3929 /* | |
| 3930 * Try to resolve the full name of the file so that the swapfile name will | |
| 3931 * be consistent even when opening a relative symlink from different | |
| 3932 * working directories. | |
| 3933 */ | |
| 3934 return vim_FullName(tmp, buf, MAXPATHL, TRUE); | |
| 3935 } | |
| 3936 #endif | |
| 3937 | |
| 7 | 3938 /* |
| 460 | 3939 * Make swap file name out of the file name and a directory name. |
| 3940 * Returns pointer to allocated memory or NULL. | |
| 7 | 3941 */ |
| 460 | 3942 char_u * |
| 3943 makeswapname(fname, ffname, buf, dir_name) | |
| 3944 char_u *fname; | |
| 1978 | 3945 char_u *ffname UNUSED; |
| 7 | 3946 buf_T *buf; |
| 3947 char_u *dir_name; | |
| 3948 { | |
| 3949 char_u *r, *s; | |
|
2145
de0e7ca61893
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Bram Moolenaar <bram@zimbu.org>
parents:
2108
diff
changeset
|
3950 char_u *fname_res = fname; |
| 594 | 3951 #ifdef HAVE_READLINK |
| 3952 char_u fname_buf[MAXPATHL]; | |
| 3953 #endif | |
| 7 | 3954 |
| 3955 #if defined(UNIX) || defined(WIN3264) /* Need _very_ long file names */ | |
| 3956 s = dir_name + STRLEN(dir_name); | |
| 39 | 3957 if (after_pathsep(dir_name, s) && s[-1] == s[-2]) |
| 7 | 3958 { /* Ends with '//', Use Full path */ |
| 3959 r = NULL; | |
| 460 | 3960 if ((s = make_percent_swname(dir_name, fname)) != NULL) |
| 7 | 3961 { |
| 3962 r = modname(s, (char_u *)".swp", FALSE); | |
| 3963 vim_free(s); | |
| 3964 } | |
| 3965 return r; | |
| 3966 } | |
| 3967 #endif | |
| 3968 | |
| 594 | 3969 #ifdef HAVE_READLINK |
| 3970 /* Expand symlink in the file name, so that we put the swap file with the | |
| 3971 * actual file instead of with the symlink. */ | |
| 3972 if (resolve_symlink(fname, fname_buf) == OK) | |
| 3973 fname_res = fname_buf; | |
| 3974 #endif | |
| 3975 | |
| 7 | 3976 r = buf_modname( |
| 3977 #ifdef SHORT_FNAME | |
| 3978 TRUE, | |
| 3979 #else | |
| 3980 (buf->b_p_sn || buf->b_shortname), | |
| 3981 #endif | |
| 1082 | 3982 #ifdef RISCOS |
| 3983 /* Avoid problems if fname has special chars, eg <Wimp$Scrap> */ | |
| 460 | 3984 ffname, |
| 7 | 3985 #else |
| 594 | 3986 fname_res, |
| 7 | 3987 #endif |
| 3988 (char_u *) | |
| 3989 #if defined(VMS) || defined(RISCOS) | |
| 3990 "_swp", | |
| 3991 #else | |
| 3992 ".swp", | |
| 3993 #endif | |
| 3994 #ifdef SHORT_FNAME /* always 8.3 file name */ | |
| 3995 FALSE | |
| 3996 #else | |
| 3997 /* Prepend a '.' to the swap file name for the current directory. */ | |
| 3998 dir_name[0] == '.' && dir_name[1] == NUL | |
| 3999 #endif | |
| 4000 ); | |
| 4001 if (r == NULL) /* out of memory */ | |
| 4002 return NULL; | |
| 4003 | |
| 4004 s = get_file_in_dir(r, dir_name); | |
| 4005 vim_free(r); | |
| 4006 return s; | |
| 4007 } | |
| 4008 | |
| 4009 /* | |
| 4010 * Get file name to use for swap file or backup file. | |
| 4011 * Use the name of the edited file "fname" and an entry in the 'dir' or 'bdir' | |
| 4012 * option "dname". | |
| 4013 * - If "dname" is ".", return "fname" (swap file in dir of file). | |
| 4014 * - If "dname" starts with "./", insert "dname" in "fname" (swap file | |
| 4015 * relative to dir of file). | |
| 4016 * - Otherwise, prepend "dname" to the tail of "fname" (swap file in specific | |
| 4017 * dir). | |
| 4018 * | |
| 4019 * The return value is an allocated string and can be NULL. | |
| 4020 */ | |
| 4021 char_u * | |
| 4022 get_file_in_dir(fname, dname) | |
| 4023 char_u *fname; | |
| 4024 char_u *dname; /* don't use "dirname", it is a global for Alpha */ | |
| 4025 { | |
| 4026 char_u *t; | |
| 4027 char_u *tail; | |
| 4028 char_u *retval; | |
| 4029 int save_char; | |
| 4030 | |
| 4031 tail = gettail(fname); | |
| 4032 | |
| 4033 if (dname[0] == '.' && dname[1] == NUL) | |
| 4034 retval = vim_strsave(fname); | |
| 4035 else if (dname[0] == '.' && vim_ispathsep(dname[1])) | |
| 4036 { | |
| 4037 if (tail == fname) /* no path before file name */ | |
| 4038 retval = concat_fnames(dname + 2, tail, TRUE); | |
| 4039 else | |
| 4040 { | |
| 4041 save_char = *tail; | |
| 4042 *tail = NUL; | |
| 4043 t = concat_fnames(fname, dname + 2, TRUE); | |
| 4044 *tail = save_char; | |
| 4045 if (t == NULL) /* out of memory */ | |
| 4046 retval = NULL; | |
| 4047 else | |
| 4048 { | |
| 4049 retval = concat_fnames(t, tail, TRUE); | |
| 4050 vim_free(t); | |
| 4051 } | |
| 4052 } | |
| 4053 } | |
| 4054 else | |
| 4055 retval = concat_fnames(dname, tail, TRUE); | |
| 4056 | |
| 4057 return retval; | |
| 4058 } | |
| 4059 | |
| 580 | 4060 static void attention_message __ARGS((buf_T *buf, char_u *fname)); |
| 4061 | |
| 4062 /* | |
| 4063 * Print the ATTENTION message: info about an existing swap file. | |
| 4064 */ | |
| 4065 static void | |
| 4066 attention_message(buf, fname) | |
| 4067 buf_T *buf; /* buffer being edited */ | |
| 4068 char_u *fname; /* swap file name */ | |
| 4069 { | |
| 4070 struct stat st; | |
| 4071 time_t x, sx; | |
| 1001 | 4072 char *p; |
| 580 | 4073 |
| 4074 ++no_wait_return; | |
| 4075 (void)EMSG(_("E325: ATTENTION")); | |
| 4076 MSG_PUTS(_("\nFound a swap file by the name \"")); | |
| 4077 msg_home_replace(fname); | |
| 4078 MSG_PUTS("\"\n"); | |
| 4079 sx = swapfile_info(fname); | |
| 4080 MSG_PUTS(_("While opening file \"")); | |
| 4081 msg_outtrans(buf->b_fname); | |
| 4082 MSG_PUTS("\"\n"); | |
| 4083 if (mch_stat((char *)buf->b_fname, &st) != -1) | |
| 4084 { | |
| 4085 MSG_PUTS(_(" dated: ")); | |
| 4086 x = st.st_mtime; /* Manx C can't do &st.st_mtime */ | |
| 1001 | 4087 p = ctime(&x); /* includes '\n' */ |
| 4088 if (p == NULL) | |
| 4089 MSG_PUTS("(invalid)\n"); | |
| 4090 else | |
| 4091 MSG_PUTS(p); | |
| 580 | 4092 if (sx != 0 && x > sx) |
| 4093 MSG_PUTS(_(" NEWER than swap file!\n")); | |
| 4094 } | |
| 4095 /* Some of these messages are long to allow translation to | |
| 4096 * other languages. */ | |
| 4097 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")); | |
| 4098 MSG_PUTS(_(" Quit, or continue with caution.\n")); | |
| 4099 MSG_PUTS(_("\n(2) An edit session for this file crashed.\n")); | |
| 4100 MSG_PUTS(_(" If this is the case, use \":recover\" or \"vim -r ")); | |
| 4101 msg_outtrans(buf->b_fname); | |
| 4102 MSG_PUTS(_("\"\n to recover the changes (see \":help recovery\").\n")); | |
| 4103 MSG_PUTS(_(" If you did this already, delete the swap file \"")); | |
| 4104 msg_outtrans(fname); | |
| 4105 MSG_PUTS(_("\"\n to avoid this message.\n")); | |
| 4106 cmdline_row = msg_row; | |
| 4107 --no_wait_return; | |
| 4108 } | |
| 4109 | |
| 4110 #ifdef FEAT_AUTOCMD | |
| 4111 static int do_swapexists __ARGS((buf_T *buf, char_u *fname)); | |
| 4112 | |
| 4113 /* | |
| 4114 * Trigger the SwapExists autocommands. | |
| 4115 * Returns a value for equivalent to do_dialog() (see below): | |
| 4116 * 0: still need to ask for a choice | |
| 4117 * 1: open read-only | |
| 4118 * 2: edit anyway | |
| 4119 * 3: recover | |
| 4120 * 4: delete it | |
| 4121 * 5: quit | |
| 4122 * 6: abort | |
| 4123 */ | |
| 4124 static int | |
| 4125 do_swapexists(buf, fname) | |
| 4126 buf_T *buf; | |
| 4127 char_u *fname; | |
| 4128 { | |
| 4129 set_vim_var_string(VV_SWAPNAME, fname, -1); | |
| 4130 set_vim_var_string(VV_SWAPCHOICE, NULL, -1); | |
| 4131 | |
| 4132 /* Trigger SwapExists autocommands with <afile> set to the file being | |
| 1856 | 4133 * edited. Disallow changing directory here. */ |
| 4134 ++allbuf_lock; | |
| 580 | 4135 apply_autocmds(EVENT_SWAPEXISTS, buf->b_fname, NULL, FALSE, NULL); |
| 1856 | 4136 --allbuf_lock; |
| 580 | 4137 |
| 4138 set_vim_var_string(VV_SWAPNAME, NULL, -1); | |
| 4139 | |
| 4140 switch (*get_vim_var_str(VV_SWAPCHOICE)) | |
| 4141 { | |
| 4142 case 'o': return 1; | |
| 4143 case 'e': return 2; | |
| 4144 case 'r': return 3; | |
| 4145 case 'd': return 4; | |
| 4146 case 'q': return 5; | |
| 4147 case 'a': return 6; | |
| 4148 } | |
| 4149 | |
| 4150 return 0; | |
| 4151 } | |
| 4152 #endif | |
| 4153 | |
| 7 | 4154 /* |
| 4155 * Find out what name to use for the swap file for buffer 'buf'. | |
| 4156 * | |
| 4157 * Several names are tried to find one that does not exist | |
| 460 | 4158 * Returns the name in allocated memory or NULL. |
| 7 | 4159 * |
| 4160 * Note: If BASENAMELEN is not correct, you will get error messages for | |
|
2214
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Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4161 * not being able to open the swap or undo file |
| 1856 | 4162 * Note: May trigger SwapExists autocmd, pointers may change! |
| 7 | 4163 */ |
| 4164 static char_u * | |
| 4165 findswapname(buf, dirp, old_fname) | |
| 4166 buf_T *buf; | |
| 4167 char_u **dirp; /* pointer to list of directories */ | |
| 4168 char_u *old_fname; /* don't give warning for this file name */ | |
| 4169 { | |
| 4170 char_u *fname; | |
| 4171 int n; | |
| 4172 char_u *dir_name; | |
| 4173 #ifdef AMIGA | |
| 4174 BPTR fh; | |
| 4175 #endif | |
| 4176 #ifndef SHORT_FNAME | |
| 4177 int r; | |
| 4178 #endif | |
| 4179 | |
| 4180 #if !defined(SHORT_FNAME) \ | |
| 4181 && ((!defined(UNIX) && !defined(OS2)) || defined(ARCHIE)) | |
| 4182 # define CREATE_DUMMY_FILE | |
| 4183 FILE *dummyfd = NULL; | |
| 4184 | |
|
2214
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4185 /* |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4186 * If we start editing a new file, e.g. "test.doc", which resides on an |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4187 * MSDOS compatible filesystem, it is possible that the file |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4188 * "test.doc.swp" which we create will be exactly the same file. To avoid |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4189 * this problem we temporarily create "test.doc". Don't do this when the |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4190 * check below for a 8.3 file name is used. |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4191 */ |
| 7 | 4192 if (!(buf->b_p_sn || buf->b_shortname) && buf->b_fname != NULL |
| 4193 && mch_getperm(buf->b_fname) < 0) | |
| 4194 dummyfd = mch_fopen((char *)buf->b_fname, "w"); | |
| 4195 #endif | |
| 4196 | |
|
2214
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Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4197 /* |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4198 * Isolate a directory name from *dirp and put it in dir_name. |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4199 * First allocate some memory to put the directory name in. |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4200 */ |
| 7 | 4201 dir_name = alloc((unsigned)STRLEN(*dirp) + 1); |
| 4202 if (dir_name != NULL) | |
| 4203 (void)copy_option_part(dirp, dir_name, 31000, ","); | |
| 4204 | |
|
2214
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Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4205 /* |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4206 * we try different names until we find one that does not exist yet |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4207 */ |
| 7 | 4208 if (dir_name == NULL) /* out of memory */ |
| 4209 fname = NULL; | |
| 4210 else | |
| 460 | 4211 fname = makeswapname(buf->b_fname, buf->b_ffname, buf, dir_name); |
| 7 | 4212 |
| 4213 for (;;) | |
| 4214 { | |
| 4215 if (fname == NULL) /* must be out of memory */ | |
| 4216 break; | |
| 4217 if ((n = (int)STRLEN(fname)) == 0) /* safety check */ | |
| 4218 { | |
| 4219 vim_free(fname); | |
| 4220 fname = NULL; | |
| 4221 break; | |
| 4222 } | |
| 4223 #if (defined(UNIX) || defined(OS2)) && !defined(ARCHIE) && !defined(SHORT_FNAME) | |
| 4224 /* | |
| 4225 * Some systems have a MS-DOS compatible filesystem that use 8.3 character | |
| 4226 * file names. If this is the first try and the swap file name does not fit in | |
| 4227 * 8.3, detect if this is the case, set shortname and try again. | |
| 4228 */ | |
| 4229 if (fname[n - 2] == 'w' && fname[n - 1] == 'p' | |
| 4230 && !(buf->b_p_sn || buf->b_shortname)) | |
| 4231 { | |
| 4232 char_u *tail; | |
| 4233 char_u *fname2; | |
| 4234 struct stat s1, s2; | |
| 4235 int f1, f2; | |
| 4236 int created1 = FALSE, created2 = FALSE; | |
| 4237 int same = FALSE; | |
| 4238 | |
| 4239 /* | |
| 4240 * Check if swapfile name does not fit in 8.3: | |
| 4241 * It either contains two dots, is longer than 8 chars, or starts | |
| 4242 * with a dot. | |
| 4243 */ | |
| 4244 tail = gettail(buf->b_fname); | |
| 4245 if ( vim_strchr(tail, '.') != NULL | |
| 4246 || STRLEN(tail) > (size_t)8 | |
| 4247 || *gettail(fname) == '.') | |
| 4248 { | |
| 4249 fname2 = alloc(n + 2); | |
| 4250 if (fname2 != NULL) | |
| 4251 { | |
| 4252 STRCPY(fname2, fname); | |
| 4253 /* if fname == "xx.xx.swp", fname2 = "xx.xx.swx" | |
| 4254 * if fname == ".xx.swp", fname2 = ".xx.swpx" | |
| 4255 * if fname == "123456789.swp", fname2 = "12345678x.swp" | |
| 4256 */ | |
| 4257 if (vim_strchr(tail, '.') != NULL) | |
| 4258 fname2[n - 1] = 'x'; | |
| 4259 else if (*gettail(fname) == '.') | |
| 4260 { | |
| 4261 fname2[n] = 'x'; | |
| 4262 fname2[n + 1] = NUL; | |
| 4263 } | |
| 4264 else | |
| 4265 fname2[n - 5] += 1; | |
| 4266 /* | |
| 4267 * may need to create the files to be able to use mch_stat() | |
| 4268 */ | |
| 4269 f1 = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
| 4270 if (f1 < 0) | |
| 4271 { | |
| 4272 f1 = mch_open_rw((char *)fname, | |
| 4273 O_RDWR|O_CREAT|O_EXCL|O_EXTRA); | |
| 4274 #if defined(OS2) | |
| 4275 if (f1 < 0 && errno == ENOENT) | |
| 4276 same = TRUE; | |
| 4277 #endif | |
| 4278 created1 = TRUE; | |
| 4279 } | |
| 4280 if (f1 >= 0) | |
| 4281 { | |
| 4282 f2 = mch_open((char *)fname2, O_RDONLY | O_EXTRA, 0); | |
| 4283 if (f2 < 0) | |
| 4284 { | |
| 4285 f2 = mch_open_rw((char *)fname2, | |
| 4286 O_RDWR|O_CREAT|O_EXCL|O_EXTRA); | |
| 4287 created2 = TRUE; | |
| 4288 } | |
| 4289 if (f2 >= 0) | |
| 4290 { | |
| 4291 /* | |
| 4292 * Both files exist now. If mch_stat() returns the | |
| 4293 * same device and inode they are the same file. | |
| 4294 */ | |
| 4295 if (mch_fstat(f1, &s1) != -1 | |
| 4296 && mch_fstat(f2, &s2) != -1 | |
| 4297 && s1.st_dev == s2.st_dev | |
| 4298 && s1.st_ino == s2.st_ino) | |
| 4299 same = TRUE; | |
| 4300 close(f2); | |
| 4301 if (created2) | |
| 4302 mch_remove(fname2); | |
| 4303 } | |
| 4304 close(f1); | |
| 4305 if (created1) | |
| 4306 mch_remove(fname); | |
| 4307 } | |
| 4308 vim_free(fname2); | |
| 4309 if (same) | |
| 4310 { | |
| 4311 buf->b_shortname = TRUE; | |
| 4312 vim_free(fname); | |
| 460 | 4313 fname = makeswapname(buf->b_fname, buf->b_ffname, |
| 4314 buf, dir_name); | |
| 7 | 4315 continue; /* try again with b_shortname set */ |
| 4316 } | |
| 4317 } | |
| 4318 } | |
| 4319 } | |
| 4320 #endif | |
| 4321 /* | |
| 4322 * check if the swapfile already exists | |
| 4323 */ | |
| 4324 if (mch_getperm(fname) < 0) /* it does not exist */ | |
| 4325 { | |
| 4326 #ifdef HAVE_LSTAT | |
| 4327 struct stat sb; | |
| 4328 | |
| 4329 /* | |
| 4330 * Extra security check: When a swap file is a symbolic link, this | |
| 4331 * is most likely a symlink attack. | |
| 4332 */ | |
| 4333 if (mch_lstat((char *)fname, &sb) < 0) | |
| 4334 #else | |
| 4335 # ifdef AMIGA | |
| 4336 fh = Open((UBYTE *)fname, (long)MODE_NEWFILE); | |
| 4337 /* | |
| 4338 * on the Amiga mch_getperm() will return -1 when the file exists | |
| 4339 * but is being used by another program. This happens if you edit | |
| 4340 * a file twice. | |
| 4341 */ | |
| 4342 if (fh != (BPTR)NULL) /* can open file, OK */ | |
| 4343 { | |
| 4344 Close(fh); | |
| 4345 mch_remove(fname); | |
| 4346 break; | |
| 4347 } | |
| 4348 if (IoErr() != ERROR_OBJECT_IN_USE | |
| 4349 && IoErr() != ERROR_OBJECT_EXISTS) | |
| 4350 # endif | |
| 4351 #endif | |
| 4352 break; | |
| 4353 } | |
| 4354 | |
| 4355 /* | |
| 4356 * A file name equal to old_fname is OK to use. | |
| 4357 */ | |
| 4358 if (old_fname != NULL && fnamecmp(fname, old_fname) == 0) | |
| 4359 break; | |
| 4360 | |
| 4361 /* | |
| 4362 * get here when file already exists | |
| 4363 */ | |
| 4364 if (fname[n - 2] == 'w' && fname[n - 1] == 'p') /* first try */ | |
| 4365 { | |
| 4366 #ifndef SHORT_FNAME | |
| 4367 /* | |
| 4368 * on MS-DOS compatible filesystems (e.g. messydos) file.doc.swp | |
| 4369 * and file.doc are the same file. To guess if this problem is | |
| 4370 * present try if file.doc.swx exists. If it does, we set | |
| 4371 * buf->b_shortname and try file_doc.swp (dots replaced by | |
| 4372 * underscores for this file), and try again. If it doesn't we | |
| 4373 * assume that "file.doc.swp" already exists. | |
| 4374 */ | |
| 4375 if (!(buf->b_p_sn || buf->b_shortname)) /* not tried yet */ | |
| 4376 { | |
| 4377 fname[n - 1] = 'x'; | |
| 4378 r = mch_getperm(fname); /* try "file.swx" */ | |
| 4379 fname[n - 1] = 'p'; | |
| 4380 if (r >= 0) /* "file.swx" seems to exist */ | |
| 4381 { | |
| 4382 buf->b_shortname = TRUE; | |
| 4383 vim_free(fname); | |
| 460 | 4384 fname = makeswapname(buf->b_fname, buf->b_ffname, |
| 4385 buf, dir_name); | |
| 7 | 4386 continue; /* try again with '.' replaced with '_' */ |
| 4387 } | |
| 4388 } | |
| 4389 #endif | |
| 4390 /* | |
| 4391 * If we get here the ".swp" file really exists. | |
| 4392 * Give an error message, unless recovering, no file name, we are | |
| 4393 * viewing a help file or when the path of the file is different | |
| 4394 * (happens when all .swp files are in one directory). | |
| 4395 */ | |
| 43 | 4396 if (!recoverymode && buf->b_fname != NULL |
| 4397 && !buf->b_help && !(buf->b_flags & BF_DUMMY)) | |
| 7 | 4398 { |
| 4399 int fd; | |
| 4400 struct block0 b0; | |
| 4401 int differ = FALSE; | |
| 4402 | |
| 4403 /* | |
| 4404 * Try to read block 0 from the swap file to get the original | |
| 4405 * file name (and inode number). | |
| 4406 */ | |
| 4407 fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
| 4408 if (fd >= 0) | |
| 4409 { | |
| 4410 if (read(fd, (char *)&b0, sizeof(b0)) == sizeof(b0)) | |
| 4411 { | |
| 4412 /* | |
| 39 | 4413 * If the swapfile has the same directory as the |
| 4414 * buffer don't compare the directory names, they can | |
| 4415 * have a different mountpoint. | |
| 7 | 4416 */ |
| 39 | 4417 if (b0.b0_flags & B0_SAME_DIR) |
| 4418 { | |
| 4419 if (fnamecmp(gettail(buf->b_ffname), | |
| 4420 gettail(b0.b0_fname)) != 0 | |
| 4421 || !same_directory(fname, buf->b_ffname)) | |
| 594 | 4422 { |
| 4423 #ifdef CHECK_INODE | |
| 4424 /* Symlinks may point to the same file even | |
| 4425 * when the name differs, need to check the | |
| 4426 * inode too. */ | |
| 4427 expand_env(b0.b0_fname, NameBuff, MAXPATHL); | |
| 4428 if (fnamecmp_ino(buf->b_ffname, NameBuff, | |
| 4429 char_to_long(b0.b0_ino))) | |
| 4430 #endif | |
| 4431 differ = TRUE; | |
| 4432 } | |
| 39 | 4433 } |
| 4434 else | |
| 4435 { | |
| 4436 /* | |
| 4437 * The name in the swap file may be | |
| 4438 * "~user/path/file". Expand it first. | |
| 4439 */ | |
| 4440 expand_env(b0.b0_fname, NameBuff, MAXPATHL); | |
| 7 | 4441 #ifdef CHECK_INODE |
| 39 | 4442 if (fnamecmp_ino(buf->b_ffname, NameBuff, |
| 594 | 4443 char_to_long(b0.b0_ino))) |
| 39 | 4444 differ = TRUE; |
| 7 | 4445 #else |
| 39 | 4446 if (fnamecmp(NameBuff, buf->b_ffname) != 0) |
| 4447 differ = TRUE; | |
| 7 | 4448 #endif |
| 39 | 4449 } |
| 7 | 4450 } |
| 4451 close(fd); | |
| 4452 } | |
| 4453 #ifdef RISCOS | |
| 4454 else | |
| 4455 /* Can't open swap file, though it does exist. | |
| 4456 * Assume that the user is editing two files with | |
| 4457 * the same name in different directories. No error. | |
| 4458 */ | |
| 4459 differ = TRUE; | |
| 4460 #endif | |
| 4461 | |
| 4462 /* give the ATTENTION message when there is an old swap file | |
| 4463 * for the current file, and the buffer was not recovered. */ | |
| 4464 if (differ == FALSE && !(curbuf->b_flags & BF_RECOVERED) | |
| 4465 && vim_strchr(p_shm, SHM_ATTENTION) == NULL) | |
| 4466 { | |
| 580 | 4467 #if defined(HAS_SWAP_EXISTS_ACTION) |
| 4468 int choice = 0; | |
| 4469 #endif | |
| 7 | 4470 #ifdef CREATE_DUMMY_FILE |
| 4471 int did_use_dummy = FALSE; | |
| 4472 | |
| 4473 /* Avoid getting a warning for the file being created | |
| 4474 * outside of Vim, it was created at the start of this | |
| 4475 * function. Delete the file now, because Vim might exit | |
| 4476 * here if the window is closed. */ | |
| 4477 if (dummyfd != NULL) | |
| 4478 { | |
| 4479 fclose(dummyfd); | |
| 4480 dummyfd = NULL; | |
| 4481 mch_remove(buf->b_fname); | |
| 4482 did_use_dummy = TRUE; | |
| 4483 } | |
| 4484 #endif | |
| 4485 | |
| 4486 #if (defined(UNIX) || defined(__EMX__) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)) | |
| 4487 process_still_running = FALSE; | |
| 4488 #endif | |
| 580 | 4489 #ifdef FEAT_AUTOCMD |
| 4490 /* | |
| 4491 * If there is an SwapExists autocommand and we can handle | |
| 4492 * the response, trigger it. It may return 0 to ask the | |
| 4493 * user anyway. | |
| 4494 */ | |
| 4495 if (swap_exists_action != SEA_NONE | |
| 4496 && has_autocmd(EVENT_SWAPEXISTS, buf->b_fname, buf)) | |
| 4497 choice = do_swapexists(buf, fname); | |
| 4498 | |
| 4499 if (choice == 0) | |
| 4500 #endif | |
| 7 | 4501 { |
| 580 | 4502 #ifdef FEAT_GUI |
| 4503 /* If we are supposed to start the GUI but it wasn't | |
| 4504 * completely started yet, start it now. This makes | |
| 4505 * the messages displayed in the Vim window when | |
| 4506 * loading a session from the .gvimrc file. */ | |
| 4507 if (gui.starting && !gui.in_use) | |
| 4508 gui_start(); | |
| 4509 #endif | |
| 4510 /* Show info about the existing swap file. */ | |
| 4511 attention_message(buf, fname); | |
| 4512 | |
| 4513 /* We don't want a 'q' typed at the more-prompt | |
| 4514 * interrupt loading a file. */ | |
| 4515 got_int = FALSE; | |
| 7 | 4516 } |
| 4517 | |
| 4518 #if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) | |
| 580 | 4519 if (swap_exists_action != SEA_NONE && choice == 0) |
| 7 | 4520 { |
| 4521 char_u *name; | |
| 4522 | |
| 4523 name = alloc((unsigned)(STRLEN(fname) | |
| 4524 + STRLEN(_("Swap file \"")) | |
| 4525 + STRLEN(_("\" already exists!")) + 5)); | |
| 4526 if (name != NULL) | |
| 4527 { | |
| 4528 STRCPY(name, _("Swap file \"")); | |
| 4529 home_replace(NULL, fname, name + STRLEN(name), | |
| 4530 1000, TRUE); | |
| 4531 STRCAT(name, _("\" already exists!")); | |
| 4532 } | |
| 580 | 4533 choice = do_dialog(VIM_WARNING, |
| 7 | 4534 (char_u *)_("VIM - ATTENTION"), |
| 4535 name == NULL | |
| 4536 ? (char_u *)_("Swap file already exists!") | |
| 4537 : name, | |
| 4538 # if defined(UNIX) || defined(__EMX__) || defined(VMS) | |
| 4539 process_still_running | |
| 4540 ? (char_u *)_("&Open Read-Only\n&Edit anyway\n&Recover\n&Quit\n&Abort") : | |
| 4541 # endif | |
| 580 | 4542 (char_u *)_("&Open Read-Only\n&Edit anyway\n&Recover\n&Delete it\n&Quit\n&Abort"), 1, NULL); |
| 4543 | |
| 4544 # if defined(UNIX) || defined(__EMX__) || defined(VMS) | |
| 4545 if (process_still_running && choice >= 4) | |
| 4546 choice++; /* Skip missing "Delete it" button */ | |
| 4547 # endif | |
| 4548 vim_free(name); | |
| 4549 | |
| 4550 /* pretend screen didn't scroll, need redraw anyway */ | |
| 4551 msg_scrolled = 0; | |
| 4552 redraw_all_later(NOT_VALID); | |
| 4553 } | |
| 4554 #endif | |
| 4555 | |
| 4556 #if defined(HAS_SWAP_EXISTS_ACTION) | |
| 4557 if (choice > 0) | |
| 4558 { | |
| 4559 switch (choice) | |
| 7 | 4560 { |
| 4561 case 1: | |
| 4562 buf->b_p_ro = TRUE; | |
| 4563 break; | |
| 4564 case 2: | |
| 4565 break; | |
| 4566 case 3: | |
| 4567 swap_exists_action = SEA_RECOVER; | |
| 4568 break; | |
| 4569 case 4: | |
| 580 | 4570 mch_remove(fname); |
| 4571 break; | |
| 4572 case 5: | |
| 7 | 4573 swap_exists_action = SEA_QUIT; |
| 4574 break; | |
| 580 | 4575 case 6: |
| 7 | 4576 swap_exists_action = SEA_QUIT; |
| 4577 got_int = TRUE; | |
| 4578 break; | |
| 4579 } | |
| 4580 | |
| 4581 /* If the file was deleted this fname can be used. */ | |
| 4582 if (mch_getperm(fname) < 0) | |
| 4583 break; | |
| 4584 } | |
| 4585 else | |
| 4586 #endif | |
| 4587 { | |
| 4588 MSG_PUTS("\n"); | |
| 625 | 4589 if (msg_silent == 0) |
| 4590 /* call wait_return() later */ | |
| 4591 need_wait_return = TRUE; | |
| 7 | 4592 } |
| 4593 | |
| 4594 #ifdef CREATE_DUMMY_FILE | |
| 4595 /* Going to try another name, need the dummy file again. */ | |
| 4596 if (did_use_dummy) | |
| 4597 dummyfd = mch_fopen((char *)buf->b_fname, "w"); | |
| 4598 #endif | |
| 4599 } | |
| 4600 } | |
| 4601 } | |
| 4602 | |
| 4603 /* | |
| 4604 * Change the ".swp" extension to find another file that can be used. | |
| 4605 * First decrement the last char: ".swo", ".swn", etc. | |
| 4606 * If that still isn't enough decrement the last but one char: ".svz" | |
| 9 | 4607 * Can happen when editing many "No Name" buffers. |
| 7 | 4608 */ |
| 4609 if (fname[n - 1] == 'a') /* ".s?a" */ | |
| 4610 { | |
| 4611 if (fname[n - 2] == 'a') /* ".saa": tried enough, give up */ | |
| 4612 { | |
| 4613 EMSG(_("E326: Too many swap files found")); | |
| 4614 vim_free(fname); | |
| 4615 fname = NULL; | |
| 4616 break; | |
| 4617 } | |
| 4618 --fname[n - 2]; /* ".svz", ".suz", etc. */ | |
| 4619 fname[n - 1] = 'z' + 1; | |
| 4620 } | |
| 4621 --fname[n - 1]; /* ".swo", ".swn", etc. */ | |
| 4622 } | |
| 4623 | |
| 4624 vim_free(dir_name); | |
| 4625 #ifdef CREATE_DUMMY_FILE | |
| 4626 if (dummyfd != NULL) /* file has been created temporarily */ | |
| 4627 { | |
| 4628 fclose(dummyfd); | |
| 4629 mch_remove(buf->b_fname); | |
| 4630 } | |
| 4631 #endif | |
| 4632 return fname; | |
| 4633 } | |
| 4634 | |
| 4635 static int | |
| 4636 b0_magic_wrong(b0p) | |
| 4637 ZERO_BL *b0p; | |
| 4638 { | |
| 4639 return (b0p->b0_magic_long != (long)B0_MAGIC_LONG | |
| 4640 || b0p->b0_magic_int != (int)B0_MAGIC_INT | |
| 4641 || b0p->b0_magic_short != (short)B0_MAGIC_SHORT | |
| 4642 || b0p->b0_magic_char != B0_MAGIC_CHAR); | |
| 4643 } | |
| 4644 | |
| 4645 #ifdef CHECK_INODE | |
| 4646 /* | |
| 4647 * Compare current file name with file name from swap file. | |
| 4648 * Try to use inode numbers when possible. | |
| 4649 * Return non-zero when files are different. | |
| 4650 * | |
| 4651 * When comparing file names a few things have to be taken into consideration: | |
| 4652 * - When working over a network the full path of a file depends on the host. | |
| 4653 * We check the inode number if possible. It is not 100% reliable though, | |
| 4654 * because the device number cannot be used over a network. | |
| 4655 * - When a file does not exist yet (editing a new file) there is no inode | |
| 4656 * number. | |
| 4657 * - The file name in a swap file may not be valid on the current host. The | |
| 4658 * "~user" form is used whenever possible to avoid this. | |
| 4659 * | |
| 4660 * This is getting complicated, let's make a table: | |
| 4661 * | |
| 4662 * ino_c ino_s fname_c fname_s differ = | |
| 4663 * | |
| 4664 * both files exist -> compare inode numbers: | |
| 4665 * != 0 != 0 X X ino_c != ino_s | |
| 4666 * | |
| 4667 * inode number(s) unknown, file names available -> compare file names | |
| 4668 * == 0 X OK OK fname_c != fname_s | |
| 4669 * X == 0 OK OK fname_c != fname_s | |
| 4670 * | |
| 4671 * current file doesn't exist, file for swap file exist, file name(s) not | |
| 4672 * available -> probably different | |
| 4673 * == 0 != 0 FAIL X TRUE | |
| 4674 * == 0 != 0 X FAIL TRUE | |
| 4675 * | |
| 4676 * current file exists, inode for swap unknown, file name(s) not | |
| 4677 * available -> probably different | |
| 4678 * != 0 == 0 FAIL X TRUE | |
| 4679 * != 0 == 0 X FAIL TRUE | |
| 4680 * | |
| 4681 * current file doesn't exist, inode for swap unknown, one file name not | |
| 4682 * available -> probably different | |
| 4683 * == 0 == 0 FAIL OK TRUE | |
| 4684 * == 0 == 0 OK FAIL TRUE | |
| 4685 * | |
| 4686 * current file doesn't exist, inode for swap unknown, both file names not | |
| 4687 * available -> probably same file | |
| 4688 * == 0 == 0 FAIL FAIL FALSE | |
| 4689 * | |
| 4690 * Note that when the ino_t is 64 bits, only the last 32 will be used. This | |
| 4691 * can't be changed without making the block 0 incompatible with 32 bit | |
| 4692 * versions. | |
| 4693 */ | |
| 4694 | |
| 4695 static int | |
| 4696 fnamecmp_ino(fname_c, fname_s, ino_block0) | |
| 4697 char_u *fname_c; /* current file name */ | |
| 4698 char_u *fname_s; /* file name from swap file */ | |
| 4699 long ino_block0; | |
| 4700 { | |
| 4701 struct stat st; | |
| 4702 ino_t ino_c = 0; /* ino of current file */ | |
| 4703 ino_t ino_s; /* ino of file from swap file */ | |
| 4704 char_u buf_c[MAXPATHL]; /* full path of fname_c */ | |
| 4705 char_u buf_s[MAXPATHL]; /* full path of fname_s */ | |
| 4706 int retval_c; /* flag: buf_c valid */ | |
| 4707 int retval_s; /* flag: buf_s valid */ | |
| 4708 | |
| 4709 if (mch_stat((char *)fname_c, &st) == 0) | |
| 4710 ino_c = (ino_t)st.st_ino; | |
| 4711 | |
| 4712 /* | |
| 4713 * First we try to get the inode from the file name, because the inode in | |
| 4714 * the swap file may be outdated. If that fails (e.g. this path is not | |
| 4715 * valid on this machine), use the inode from block 0. | |
| 4716 */ | |
| 4717 if (mch_stat((char *)fname_s, &st) == 0) | |
| 4718 ino_s = (ino_t)st.st_ino; | |
| 4719 else | |
| 4720 ino_s = (ino_t)ino_block0; | |
| 4721 | |
| 4722 if (ino_c && ino_s) | |
| 4723 return (ino_c != ino_s); | |
| 4724 | |
| 4725 /* | |
| 4726 * One of the inode numbers is unknown, try a forced vim_FullName() and | |
| 4727 * compare the file names. | |
| 4728 */ | |
| 4729 retval_c = vim_FullName(fname_c, buf_c, MAXPATHL, TRUE); | |
| 4730 retval_s = vim_FullName(fname_s, buf_s, MAXPATHL, TRUE); | |
| 4731 if (retval_c == OK && retval_s == OK) | |
| 4732 return (STRCMP(buf_c, buf_s) != 0); | |
| 4733 | |
| 4734 /* | |
| 4735 * Can't compare inodes or file names, guess that the files are different, | |
| 4736 * unless both appear not to exist at all. | |
| 4737 */ | |
| 4738 if (ino_s == 0 && ino_c == 0 && retval_c == FAIL && retval_s == FAIL) | |
| 4739 return FALSE; | |
| 4740 return TRUE; | |
| 4741 } | |
| 4742 #endif /* CHECK_INODE */ | |
| 4743 | |
| 4744 /* | |
| 4745 * Move a long integer into a four byte character array. | |
| 4746 * Used for machine independency in block zero. | |
| 4747 */ | |
| 4748 static void | |
| 4749 long_to_char(n, s) | |
| 4750 long n; | |
| 4751 char_u *s; | |
| 4752 { | |
| 4753 s[0] = (char_u)(n & 0xff); | |
| 4754 n = (unsigned)n >> 8; | |
| 4755 s[1] = (char_u)(n & 0xff); | |
| 4756 n = (unsigned)n >> 8; | |
| 4757 s[2] = (char_u)(n & 0xff); | |
| 4758 n = (unsigned)n >> 8; | |
| 4759 s[3] = (char_u)(n & 0xff); | |
| 4760 } | |
| 4761 | |
| 4762 static long | |
| 4763 char_to_long(s) | |
| 4764 char_u *s; | |
| 4765 { | |
| 4766 long retval; | |
| 4767 | |
| 4768 retval = s[3]; | |
| 4769 retval <<= 8; | |
| 4770 retval |= s[2]; | |
| 4771 retval <<= 8; | |
| 4772 retval |= s[1]; | |
| 4773 retval <<= 8; | |
| 4774 retval |= s[0]; | |
| 4775 | |
| 4776 return retval; | |
| 4777 } | |
| 4778 | |
| 39 | 4779 /* |
| 4780 * Set the flags in the first block of the swap file: | |
| 4781 * - file is modified or not: buf->b_changed | |
| 4782 * - 'fileformat' | |
| 4783 * - 'fileencoding' | |
| 4784 */ | |
| 7 | 4785 void |
| 39 | 4786 ml_setflags(buf) |
| 7 | 4787 buf_T *buf; |
| 4788 { | |
| 4789 bhdr_T *hp; | |
| 4790 ZERO_BL *b0p; | |
| 4791 | |
| 4792 if (!buf->b_ml.ml_mfp) | |
| 4793 return; | |
| 4794 for (hp = buf->b_ml.ml_mfp->mf_used_last; hp != NULL; hp = hp->bh_prev) | |
| 4795 { | |
| 4796 if (hp->bh_bnum == 0) | |
| 4797 { | |
| 4798 b0p = (ZERO_BL *)(hp->bh_data); | |
| 39 | 4799 b0p->b0_dirty = buf->b_changed ? B0_DIRTY : 0; |
| 4800 b0p->b0_flags = (b0p->b0_flags & ~B0_FF_MASK) | |
| 4801 | (get_fileformat(buf) + 1); | |
| 4802 #ifdef FEAT_MBYTE | |
| 4803 add_b0_fenc(b0p, buf); | |
| 4804 #endif | |
| 7 | 4805 hp->bh_flags |= BH_DIRTY; |
| 4806 mf_sync(buf->b_ml.ml_mfp, MFS_ZERO); | |
| 4807 break; | |
| 4808 } | |
| 4809 } | |
| 4810 } | |
| 4811 | |
| 2267 | 4812 #if defined(FEAT_CRYPT) || defined(PROTO) |
| 4813 /* | |
| 4814 * If "data" points to a data block encrypt the text in it and return a copy | |
| 4815 * in allocated memory. Return NULL when out of memory. | |
| 4816 * Otherwise return "data". | |
| 4817 */ | |
| 4818 char_u * | |
| 4819 ml_encrypt_data(mfp, data, offset, size) | |
| 4820 memfile_T *mfp; | |
| 4821 char_u *data; | |
| 4822 off_t offset; | |
| 4823 unsigned size; | |
| 4824 { | |
| 4825 DATA_BL *dp = (DATA_BL *)data; | |
| 4826 char_u *head_end; | |
| 4827 char_u *text_start; | |
| 4828 char_u *new_data; | |
| 4829 int text_len; | |
| 4830 | |
| 4831 if (dp->db_id != DATA_ID) | |
| 4832 return data; | |
| 4833 | |
| 4834 new_data = (char_u *)alloc(size); | |
| 4835 if (new_data == NULL) | |
| 4836 return NULL; | |
| 4837 head_end = (char_u *)(&dp->db_index[dp->db_line_count]); | |
| 4838 text_start = (char_u *)dp + dp->db_txt_start; | |
| 4839 text_len = size - dp->db_txt_start; | |
| 4840 | |
| 4841 /* Copy the header and the text. */ | |
| 4842 mch_memmove(new_data, dp, head_end - (char_u *)dp); | |
| 4843 | |
| 4844 /* Encrypt the text. */ | |
| 4845 crypt_push_state(); | |
| 4846 ml_crypt_prepare(mfp, offset, FALSE); | |
| 4847 crypt_encode(text_start, text_len, new_data + dp->db_txt_start); | |
| 4848 crypt_pop_state(); | |
| 4849 | |
| 4850 /* Clear the gap. */ | |
| 4851 if (head_end < text_start) | |
| 4852 vim_memset(new_data + (head_end - data), 0, text_start - head_end); | |
| 4853 | |
| 4854 return new_data; | |
| 4855 } | |
| 4856 | |
| 4857 /* | |
| 4858 * Decrypt the text in "data" if it points to a data block. | |
| 4859 */ | |
| 4860 void | |
| 4861 ml_decrypt_data(mfp, data, offset, size) | |
| 4862 memfile_T *mfp; | |
| 4863 char_u *data; | |
| 4864 off_t offset; | |
| 4865 unsigned size; | |
| 4866 { | |
| 4867 DATA_BL *dp = (DATA_BL *)data; | |
| 4868 char_u *head_end; | |
| 4869 char_u *text_start; | |
| 4870 int text_len; | |
| 4871 | |
| 4872 if (dp->db_id == DATA_ID) | |
| 4873 { | |
| 4874 head_end = (char_u *)(&dp->db_index[dp->db_line_count]); | |
| 4875 text_start = (char_u *)dp + dp->db_txt_start; | |
| 4876 text_len = dp->db_txt_end - dp->db_txt_start; | |
| 4877 | |
| 4878 if (head_end > text_start || dp->db_txt_start > size | |
| 4879 || dp->db_txt_end > size) | |
| 4880 return; /* data was messed up */ | |
| 4881 | |
| 4882 /* Decrypt the text in place. */ | |
| 4883 crypt_push_state(); | |
| 4884 ml_crypt_prepare(mfp, offset, TRUE); | |
| 4885 crypt_decode(text_start, text_len); | |
| 4886 crypt_pop_state(); | |
| 4887 } | |
| 4888 } | |
| 4889 | |
| 4890 /* | |
| 4891 * Prepare for encryption/decryption, using the key, seed and offset. | |
| 4892 */ | |
| 4893 static void | |
| 4894 ml_crypt_prepare(mfp, offset, reading) | |
| 4895 memfile_T *mfp; | |
| 4896 off_t offset; | |
| 4897 int reading; | |
| 4898 { | |
| 4899 buf_T *buf = mfp->mf_buffer; | |
| 4900 char_u salt[50]; | |
| 4901 int method; | |
| 4902 char_u *key; | |
| 4903 char_u *seed; | |
| 4904 | |
| 4905 if (reading && mfp->mf_old_key != NULL) | |
| 4906 { | |
| 4907 /* Reading back blocks with the previous key/method/seed. */ | |
| 4908 method = mfp->mf_old_cm; | |
| 4909 key = mfp->mf_old_key; | |
| 4910 seed = mfp->mf_old_seed; | |
| 4911 } | |
| 4912 else | |
| 4913 { | |
|
2360
d8e4b27cef80
Change 'cryptmethod' from a number to a string option. Make it global-local.
Bram Moolenaar <bram@vim.org>
parents:
2283
diff
changeset
|
4914 method = get_crypt_method(buf); |
| 2267 | 4915 key = buf->b_p_key; |
| 4916 seed = mfp->mf_seed; | |
| 4917 } | |
| 4918 | |
| 4919 use_crypt_method = method; /* select pkzip or blowfish */ | |
| 4920 if (method == 0) | |
| 4921 { | |
| 4922 vim_snprintf((char *)salt, sizeof(salt), "%s%ld", key, (long)offset); | |
| 4923 crypt_init_keys(salt); | |
| 4924 } | |
| 4925 else | |
| 4926 { | |
| 4927 /* Using blowfish, add salt and seed. We use the byte offset of the | |
| 4928 * block for the salt. */ | |
| 4929 vim_snprintf((char *)salt, sizeof(salt), "%ld", (long)offset); | |
| 2272 | 4930 bf_key_init(key, salt, (int)STRLEN(salt)); |
| 2267 | 4931 bf_ofb_init(seed, MF_SEED_LEN); |
| 4932 } | |
| 4933 } | |
| 4934 | |
| 4935 #endif | |
| 4936 | |
| 4937 | |
| 7 | 4938 #if defined(FEAT_BYTEOFF) || defined(PROTO) |
| 4939 | |
| 4940 #define MLCS_MAXL 800 /* max no of lines in chunk */ | |
| 4941 #define MLCS_MINL 400 /* should be half of MLCS_MAXL */ | |
| 4942 | |
| 4943 /* | |
|
2407
6bc102a4bff8
Fix memory access to 'cryptmethod' during recovery. (Dominique Pelle)
Bram Moolenaar <bram@vim.org>
parents:
2394
diff
changeset
|
4944 * Keep information for finding byte offset of a line, updtype may be one of: |
| 7 | 4945 * ML_CHNK_ADDLINE: Add len to parent chunk, possibly splitting it |
| 4946 * Careful: ML_CHNK_ADDLINE may cause ml_find_line() to be called. | |
| 4947 * ML_CHNK_DELLINE: Subtract len from parent chunk, possibly deleting it | |
| 4948 * ML_CHNK_UPDLINE: Add len to parent chunk, as a signed entity. | |
| 4949 */ | |
| 4950 static void | |
| 4951 ml_updatechunk(buf, line, len, updtype) | |
| 4952 buf_T *buf; | |
| 4953 linenr_T line; | |
| 4954 long len; | |
| 4955 int updtype; | |
| 4956 { | |
| 4957 static buf_T *ml_upd_lastbuf = NULL; | |
| 4958 static linenr_T ml_upd_lastline; | |
| 4959 static linenr_T ml_upd_lastcurline; | |
| 4960 static int ml_upd_lastcurix; | |
| 4961 | |
| 4962 linenr_T curline = ml_upd_lastcurline; | |
| 4963 int curix = ml_upd_lastcurix; | |
| 4964 long size; | |
| 4965 chunksize_T *curchnk; | |
| 4966 int rest; | |
| 4967 bhdr_T *hp; | |
| 4968 DATA_BL *dp; | |
| 4969 | |
| 4970 if (buf->b_ml.ml_usedchunks == -1 || len == 0) | |
| 4971 return; | |
| 4972 if (buf->b_ml.ml_chunksize == NULL) | |
| 4973 { | |
| 4974 buf->b_ml.ml_chunksize = (chunksize_T *) | |
| 4975 alloc((unsigned)sizeof(chunksize_T) * 100); | |
| 4976 if (buf->b_ml.ml_chunksize == NULL) | |
| 4977 { | |
| 4978 buf->b_ml.ml_usedchunks = -1; | |
| 4979 return; | |
| 4980 } | |
| 4981 buf->b_ml.ml_numchunks = 100; | |
| 4982 buf->b_ml.ml_usedchunks = 1; | |
| 4983 buf->b_ml.ml_chunksize[0].mlcs_numlines = 1; | |
| 4984 buf->b_ml.ml_chunksize[0].mlcs_totalsize = 1; | |
| 4985 } | |
| 4986 | |
| 4987 if (updtype == ML_CHNK_UPDLINE && buf->b_ml.ml_line_count == 1) | |
| 4988 { | |
| 4989 /* | |
| 4990 * First line in empty buffer from ml_flush_line() -- reset | |
| 4991 */ | |
| 4992 buf->b_ml.ml_usedchunks = 1; | |
| 4993 buf->b_ml.ml_chunksize[0].mlcs_numlines = 1; | |
| 4994 buf->b_ml.ml_chunksize[0].mlcs_totalsize = | |
| 4995 (long)STRLEN(buf->b_ml.ml_line_ptr) + 1; | |
| 4996 return; | |
| 4997 } | |
| 4998 | |
| 4999 /* | |
| 5000 * Find chunk that our line belongs to, curline will be at start of the | |
| 5001 * chunk. | |
| 5002 */ | |
| 5003 if (buf != ml_upd_lastbuf || line != ml_upd_lastline + 1 | |
| 5004 || updtype != ML_CHNK_ADDLINE) | |
| 5005 { | |
| 5006 for (curline = 1, curix = 0; | |
| 5007 curix < buf->b_ml.ml_usedchunks - 1 | |
| 5008 && line >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 5009 curix++) | |
| 5010 { | |
| 5011 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 5012 } | |
| 5013 } | |
| 5014 else if (line >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines | |
| 5015 && curix < buf->b_ml.ml_usedchunks - 1) | |
| 5016 { | |
| 5017 /* Adjust cached curix & curline */ | |
| 5018 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 5019 curix++; | |
| 5020 } | |
| 5021 curchnk = buf->b_ml.ml_chunksize + curix; | |
| 5022 | |
| 5023 if (updtype == ML_CHNK_DELLINE) | |
| 1030 | 5024 len = -len; |
| 7 | 5025 curchnk->mlcs_totalsize += len; |
| 5026 if (updtype == ML_CHNK_ADDLINE) | |
| 5027 { | |
| 5028 curchnk->mlcs_numlines++; | |
| 5029 | |
| 5030 /* May resize here so we don't have to do it in both cases below */ | |
| 5031 if (buf->b_ml.ml_usedchunks + 1 >= buf->b_ml.ml_numchunks) | |
| 5032 { | |
| 5033 buf->b_ml.ml_numchunks = buf->b_ml.ml_numchunks * 3 / 2; | |
| 5034 buf->b_ml.ml_chunksize = (chunksize_T *) | |
| 5035 vim_realloc(buf->b_ml.ml_chunksize, | |
| 5036 sizeof(chunksize_T) * buf->b_ml.ml_numchunks); | |
| 5037 if (buf->b_ml.ml_chunksize == NULL) | |
| 5038 { | |
| 5039 /* Hmmmm, Give up on offset for this buffer */ | |
| 5040 buf->b_ml.ml_usedchunks = -1; | |
| 5041 return; | |
| 5042 } | |
| 5043 } | |
| 5044 | |
| 5045 if (buf->b_ml.ml_chunksize[curix].mlcs_numlines >= MLCS_MAXL) | |
| 5046 { | |
| 5047 int count; /* number of entries in block */ | |
| 5048 int idx; | |
| 5049 int text_end; | |
| 5050 int linecnt; | |
| 5051 | |
| 5052 mch_memmove(buf->b_ml.ml_chunksize + curix + 1, | |
| 5053 buf->b_ml.ml_chunksize + curix, | |
| 5054 (buf->b_ml.ml_usedchunks - curix) * | |
| 5055 sizeof(chunksize_T)); | |
| 1855 | 5056 /* Compute length of first half of lines in the split chunk */ |
| 7 | 5057 size = 0; |
| 5058 linecnt = 0; | |
| 5059 while (curline < buf->b_ml.ml_line_count | |
| 5060 && linecnt < MLCS_MINL) | |
| 5061 { | |
| 5062 if ((hp = ml_find_line(buf, curline, ML_FIND)) == NULL) | |
| 5063 { | |
| 5064 buf->b_ml.ml_usedchunks = -1; | |
| 5065 return; | |
| 5066 } | |
| 5067 dp = (DATA_BL *)(hp->bh_data); | |
| 5068 count = (long)(buf->b_ml.ml_locked_high) - | |
| 5069 (long)(buf->b_ml.ml_locked_low) + 1; | |
| 5070 idx = curline - buf->b_ml.ml_locked_low; | |
| 5071 curline = buf->b_ml.ml_locked_high + 1; | |
| 5072 if (idx == 0)/* first line in block, text at the end */ | |
| 5073 text_end = dp->db_txt_end; | |
| 5074 else | |
| 5075 text_end = ((dp->db_index[idx - 1]) & DB_INDEX_MASK); | |
| 5076 /* Compute index of last line to use in this MEMLINE */ | |
| 5077 rest = count - idx; | |
| 5078 if (linecnt + rest > MLCS_MINL) | |
| 5079 { | |
| 5080 idx += MLCS_MINL - linecnt - 1; | |
| 5081 linecnt = MLCS_MINL; | |
| 5082 } | |
| 5083 else | |
| 5084 { | |
| 5085 idx = count - 1; | |
| 5086 linecnt += rest; | |
| 5087 } | |
| 5088 size += text_end - ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 5089 } | |
| 5090 buf->b_ml.ml_chunksize[curix].mlcs_numlines = linecnt; | |
| 5091 buf->b_ml.ml_chunksize[curix + 1].mlcs_numlines -= linecnt; | |
| 5092 buf->b_ml.ml_chunksize[curix].mlcs_totalsize = size; | |
| 5093 buf->b_ml.ml_chunksize[curix + 1].mlcs_totalsize -= size; | |
| 5094 buf->b_ml.ml_usedchunks++; | |
| 5095 ml_upd_lastbuf = NULL; /* Force recalc of curix & curline */ | |
| 5096 return; | |
| 5097 } | |
| 5098 else if (buf->b_ml.ml_chunksize[curix].mlcs_numlines >= MLCS_MINL | |
| 5099 && curix == buf->b_ml.ml_usedchunks - 1 | |
| 5100 && buf->b_ml.ml_line_count - line <= 1) | |
| 5101 { | |
| 5102 /* | |
| 5103 * We are in the last chunk and it is cheap to crate a new one | |
| 5104 * after this. Do it now to avoid the loop above later on | |
| 5105 */ | |
| 5106 curchnk = buf->b_ml.ml_chunksize + curix + 1; | |
| 5107 buf->b_ml.ml_usedchunks++; | |
| 5108 if (line == buf->b_ml.ml_line_count) | |
| 5109 { | |
| 5110 curchnk->mlcs_numlines = 0; | |
| 5111 curchnk->mlcs_totalsize = 0; | |
| 5112 } | |
| 5113 else | |
| 5114 { | |
| 5115 /* | |
| 5116 * Line is just prior to last, move count for last | |
| 5117 * This is the common case when loading a new file | |
| 5118 */ | |
| 5119 hp = ml_find_line(buf, buf->b_ml.ml_line_count, ML_FIND); | |
| 5120 if (hp == NULL) | |
| 5121 { | |
| 5122 buf->b_ml.ml_usedchunks = -1; | |
| 5123 return; | |
| 5124 } | |
| 5125 dp = (DATA_BL *)(hp->bh_data); | |
| 5126 if (dp->db_line_count == 1) | |
| 5127 rest = dp->db_txt_end - dp->db_txt_start; | |
| 5128 else | |
| 5129 rest = | |
| 5130 ((dp->db_index[dp->db_line_count - 2]) & DB_INDEX_MASK) | |
| 5131 - dp->db_txt_start; | |
| 5132 curchnk->mlcs_totalsize = rest; | |
| 5133 curchnk->mlcs_numlines = 1; | |
| 5134 curchnk[-1].mlcs_totalsize -= rest; | |
| 5135 curchnk[-1].mlcs_numlines -= 1; | |
| 5136 } | |
| 5137 } | |
| 5138 } | |
| 5139 else if (updtype == ML_CHNK_DELLINE) | |
| 5140 { | |
| 5141 curchnk->mlcs_numlines--; | |
| 5142 ml_upd_lastbuf = NULL; /* Force recalc of curix & curline */ | |
| 5143 if (curix < (buf->b_ml.ml_usedchunks - 1) | |
| 5144 && (curchnk->mlcs_numlines + curchnk[1].mlcs_numlines) | |
| 5145 <= MLCS_MINL) | |
| 5146 { | |
| 5147 curix++; | |
| 5148 curchnk = buf->b_ml.ml_chunksize + curix; | |
| 5149 } | |
| 5150 else if (curix == 0 && curchnk->mlcs_numlines <= 0) | |
| 5151 { | |
| 5152 buf->b_ml.ml_usedchunks--; | |
| 5153 mch_memmove(buf->b_ml.ml_chunksize, buf->b_ml.ml_chunksize + 1, | |
| 5154 buf->b_ml.ml_usedchunks * sizeof(chunksize_T)); | |
| 5155 return; | |
| 5156 } | |
| 5157 else if (curix == 0 || (curchnk->mlcs_numlines > 10 | |
| 5158 && (curchnk->mlcs_numlines + curchnk[-1].mlcs_numlines) | |
| 5159 > MLCS_MINL)) | |
| 5160 { | |
| 5161 return; | |
| 5162 } | |
| 5163 | |
| 5164 /* Collapse chunks */ | |
| 5165 curchnk[-1].mlcs_numlines += curchnk->mlcs_numlines; | |
| 5166 curchnk[-1].mlcs_totalsize += curchnk->mlcs_totalsize; | |
| 5167 buf->b_ml.ml_usedchunks--; | |
| 5168 if (curix < buf->b_ml.ml_usedchunks) | |
| 5169 { | |
| 5170 mch_memmove(buf->b_ml.ml_chunksize + curix, | |
| 5171 buf->b_ml.ml_chunksize + curix + 1, | |
| 5172 (buf->b_ml.ml_usedchunks - curix) * | |
| 5173 sizeof(chunksize_T)); | |
| 5174 } | |
| 5175 return; | |
| 5176 } | |
| 5177 ml_upd_lastbuf = buf; | |
| 5178 ml_upd_lastline = line; | |
| 5179 ml_upd_lastcurline = curline; | |
| 5180 ml_upd_lastcurix = curix; | |
| 5181 } | |
| 5182 | |
| 5183 /* | |
| 5184 * Find offset for line or line with offset. | |
| 169 | 5185 * Find line with offset if "lnum" is 0; return remaining offset in offp |
| 5186 * Find offset of line if "lnum" > 0 | |
| 7 | 5187 * return -1 if information is not available |
| 5188 */ | |
| 5189 long | |
| 169 | 5190 ml_find_line_or_offset(buf, lnum, offp) |
| 7 | 5191 buf_T *buf; |
| 169 | 5192 linenr_T lnum; |
| 7 | 5193 long *offp; |
| 5194 { | |
| 5195 linenr_T curline; | |
| 5196 int curix; | |
| 5197 long size; | |
| 5198 bhdr_T *hp; | |
| 5199 DATA_BL *dp; | |
| 5200 int count; /* number of entries in block */ | |
| 5201 int idx; | |
| 5202 int start_idx; | |
| 5203 int text_end; | |
| 5204 long offset; | |
| 5205 int len; | |
| 5206 int ffdos = (get_fileformat(buf) == EOL_DOS); | |
| 5207 int extra = 0; | |
| 5208 | |
| 169 | 5209 /* take care of cached line first */ |
| 5210 ml_flush_line(curbuf); | |
| 5211 | |
| 7 | 5212 if (buf->b_ml.ml_usedchunks == -1 |
| 5213 || buf->b_ml.ml_chunksize == NULL | |
| 169 | 5214 || lnum < 0) |
| 7 | 5215 return -1; |
| 5216 | |
| 5217 if (offp == NULL) | |
| 5218 offset = 0; | |
| 5219 else | |
| 5220 offset = *offp; | |
| 169 | 5221 if (lnum == 0 && offset <= 0) |
| 7 | 5222 return 1; /* Not a "find offset" and offset 0 _must_ be in line 1 */ |
| 5223 /* | |
| 5224 * Find the last chunk before the one containing our line. Last chunk is | |
| 5225 * special because it will never qualify | |
| 5226 */ | |
| 5227 curline = 1; | |
| 5228 curix = size = 0; | |
| 5229 while (curix < buf->b_ml.ml_usedchunks - 1 | |
| 169 | 5230 && ((lnum != 0 |
| 5231 && lnum >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines) | |
| 7 | 5232 || (offset != 0 |
| 5233 && offset > size + buf->b_ml.ml_chunksize[curix].mlcs_totalsize | |
| 5234 + ffdos * buf->b_ml.ml_chunksize[curix].mlcs_numlines))) | |
| 5235 { | |
| 5236 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 5237 size += buf->b_ml.ml_chunksize[curix].mlcs_totalsize; | |
| 5238 if (offset && ffdos) | |
| 5239 size += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 5240 curix++; | |
| 5241 } | |
| 5242 | |
| 169 | 5243 while ((lnum != 0 && curline < lnum) || (offset != 0 && size < offset)) |
| 7 | 5244 { |
| 5245 if (curline > buf->b_ml.ml_line_count | |
| 5246 || (hp = ml_find_line(buf, curline, ML_FIND)) == NULL) | |
| 5247 return -1; | |
| 5248 dp = (DATA_BL *)(hp->bh_data); | |
| 5249 count = (long)(buf->b_ml.ml_locked_high) - | |
| 5250 (long)(buf->b_ml.ml_locked_low) + 1; | |
| 5251 start_idx = idx = curline - buf->b_ml.ml_locked_low; | |
| 5252 if (idx == 0)/* first line in block, text at the end */ | |
| 5253 text_end = dp->db_txt_end; | |
| 5254 else | |
| 5255 text_end = ((dp->db_index[idx - 1]) & DB_INDEX_MASK); | |
| 5256 /* Compute index of last line to use in this MEMLINE */ | |
| 169 | 5257 if (lnum != 0) |
| 7 | 5258 { |
| 169 | 5259 if (curline + (count - idx) >= lnum) |
| 5260 idx += lnum - curline - 1; | |
| 7 | 5261 else |
| 5262 idx = count - 1; | |
| 5263 } | |
| 5264 else | |
| 5265 { | |
| 5266 extra = 0; | |
| 5267 while (offset >= size | |
| 5268 + text_end - (int)((dp->db_index[idx]) & DB_INDEX_MASK) | |
| 5269 + ffdos) | |
| 5270 { | |
| 5271 if (ffdos) | |
| 5272 size++; | |
| 5273 if (idx == count - 1) | |
| 5274 { | |
| 5275 extra = 1; | |
| 5276 break; | |
| 5277 } | |
| 5278 idx++; | |
| 5279 } | |
| 5280 } | |
| 5281 len = text_end - ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 5282 size += len; | |
| 5283 if (offset != 0 && size >= offset) | |
| 5284 { | |
| 5285 if (size + ffdos == offset) | |
| 5286 *offp = 0; | |
| 5287 else if (idx == start_idx) | |
| 5288 *offp = offset - size + len; | |
| 5289 else | |
| 5290 *offp = offset - size + len | |
| 5291 - (text_end - ((dp->db_index[idx - 1]) & DB_INDEX_MASK)); | |
| 5292 curline += idx - start_idx + extra; | |
| 5293 if (curline > buf->b_ml.ml_line_count) | |
| 5294 return -1; /* exactly one byte beyond the end */ | |
| 5295 return curline; | |
| 5296 } | |
| 5297 curline = buf->b_ml.ml_locked_high + 1; | |
| 5298 } | |
| 5299 | |
| 169 | 5300 if (lnum != 0) |
| 20 | 5301 { |
| 5302 /* Count extra CR characters. */ | |
| 5303 if (ffdos) | |
| 169 | 5304 size += lnum - 1; |
| 20 | 5305 |
| 5306 /* Don't count the last line break if 'bin' and 'noeol'. */ | |
| 5307 if (buf->b_p_bin && !buf->b_p_eol) | |
| 5308 size -= ffdos + 1; | |
| 5309 } | |
| 5310 | |
| 7 | 5311 return size; |
| 5312 } | |
| 5313 | |
| 5314 /* | |
| 5315 * Goto byte in buffer with offset 'cnt'. | |
| 5316 */ | |
| 5317 void | |
| 5318 goto_byte(cnt) | |
| 5319 long cnt; | |
| 5320 { | |
| 5321 long boff = cnt; | |
| 5322 linenr_T lnum; | |
| 5323 | |
| 5324 ml_flush_line(curbuf); /* cached line may be dirty */ | |
| 5325 setpcmark(); | |
| 5326 if (boff) | |
| 5327 --boff; | |
| 5328 lnum = ml_find_line_or_offset(curbuf, (linenr_T)0, &boff); | |
| 5329 if (lnum < 1) /* past the end */ | |
| 5330 { | |
| 5331 curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; | |
| 5332 curwin->w_curswant = MAXCOL; | |
| 5333 coladvance((colnr_T)MAXCOL); | |
| 5334 } | |
| 5335 else | |
| 5336 { | |
| 5337 curwin->w_cursor.lnum = lnum; | |
| 5338 curwin->w_cursor.col = (colnr_T)boff; | |
| 572 | 5339 # ifdef FEAT_VIRTUALEDIT |
| 5340 curwin->w_cursor.coladd = 0; | |
| 5341 # endif | |
| 7 | 5342 curwin->w_set_curswant = TRUE; |
| 5343 } | |
| 5344 check_cursor(); | |
| 5345 | |
| 5346 # ifdef FEAT_MBYTE | |
| 5347 /* Make sure the cursor is on the first byte of a multi-byte char. */ | |
| 5348 if (has_mbyte) | |
| 5349 mb_adjust_cursor(); | |
| 5350 # endif | |
| 5351 } | |
| 5352 #endif |