Mercurial > vim
annotate src/memline.c @ 2145:de0e7ca61893 v7.2.427
updated for version 7.2.427
Problem: The swapfile is created using the destination of a symlink, but
recovery doesn't follow symlinks.
Solution: When recovering, resolve symlinks. (James Vega)
author | Bram Moolenaar <bram@zimbu.org> |
---|---|
date | Fri, 14 May 2010 17:52:42 +0200 |
parents | 3cdf2a653e00 |
children | 0527eb0f6918 |
rev | line source |
---|---|
7 | 1 /* vi:set ts=8 sts=4 sw=4: |
2 * | |
3 * VIM - Vi IMproved by Bram Moolenaar | |
4 * | |
5 * Do ":help uganda" in Vim to read copying and usage conditions. | |
6 * Do ":help credits" in Vim to see a list of people who contributed. | |
7 * See README.txt for an overview of the Vim source code. | |
8 */ | |
9 | |
10 /* for debugging */ | |
11 /* #define CHECK(c, s) if (c) EMSG(s) */ | |
12 #define CHECK(c, s) | |
13 | |
14 /* | |
15 * memline.c: Contains the functions for appending, deleting and changing the | |
625 | 16 * text lines. The memfile functions are used to store the information in |
17 * blocks of memory, backed up by a file. The structure of the information is | |
18 * a tree. The root of the tree is a pointer block. The leaves of the tree | |
19 * are data blocks. In between may be several layers of pointer blocks, | |
20 * forming branches. | |
7 | 21 * |
22 * Three types of blocks are used: | |
23 * - Block nr 0 contains information for recovery | |
24 * - Pointer blocks contain list of pointers to other blocks. | |
25 * - Data blocks contain the actual text. | |
26 * | |
27 * Block nr 0 contains the block0 structure (see below). | |
28 * | |
29 * Block nr 1 is the first pointer block. It is the root of the tree. | |
30 * Other pointer blocks are branches. | |
31 * | |
32 * If a line is too big to fit in a single page, the block containing that | |
33 * line is made big enough to hold the line. It may span several pages. | |
34 * Otherwise all blocks are one page. | |
35 * | |
36 * A data block that was filled when starting to edit a file and was not | |
37 * changed since then, can have a negative block number. This means that it | |
38 * has not yet been assigned a place in the file. When recovering, the lines | |
39 * in this data block can be read from the original file. When the block is | |
40 * changed (lines appended/deleted/changed) or when it is flushed it gets a | |
41 * positive number. Use mf_trans_del() to get the new number, before calling | |
42 * mf_get(). | |
43 */ | |
44 | |
1668 | 45 #if defined(MSDOS) || defined(WIN16) || defined(WIN32) || defined(_WIN64) |
1624 | 46 # include "vimio.h" /* for mch_open(), must be before vim.h */ |
7 | 47 #endif |
48 | |
49 #include "vim.h" | |
50 | |
51 #ifndef UNIX /* it's in os_unix.h for Unix */ | |
52 # include <time.h> | |
53 #endif | |
54 | |
1030 | 55 #if defined(SASC) || defined(__amigaos4__) |
7 | 56 # include <proto/dos.h> /* for Open() and Close() */ |
57 #endif | |
58 | |
1030 | 59 #ifdef HAVE_ERRNO_H |
60 # include <errno.h> | |
61 #endif | |
62 | |
7 | 63 typedef struct block0 ZERO_BL; /* contents of the first block */ |
64 typedef struct pointer_block PTR_BL; /* contents of a pointer block */ | |
65 typedef struct data_block DATA_BL; /* contents of a data block */ | |
66 typedef struct pointer_entry PTR_EN; /* block/line-count pair */ | |
67 | |
68 #define DATA_ID (('d' << 8) + 'a') /* data block id */ | |
69 #define PTR_ID (('p' << 8) + 't') /* pointer block id */ | |
70 #define BLOCK0_ID0 'b' /* block 0 id 0 */ | |
71 #define BLOCK0_ID1 '0' /* block 0 id 1 */ | |
72 | |
73 /* | |
74 * pointer to a block, used in a pointer block | |
75 */ | |
76 struct pointer_entry | |
77 { | |
78 blocknr_T pe_bnum; /* block number */ | |
79 linenr_T pe_line_count; /* number of lines in this branch */ | |
80 linenr_T pe_old_lnum; /* lnum for this block (for recovery) */ | |
81 int pe_page_count; /* number of pages in block pe_bnum */ | |
82 }; | |
83 | |
84 /* | |
85 * A pointer block contains a list of branches in the tree. | |
86 */ | |
87 struct pointer_block | |
88 { | |
89 short_u pb_id; /* ID for pointer block: PTR_ID */ | |
90 short_u pb_count; /* number of pointer in this block */ | |
91 short_u pb_count_max; /* maximum value for pb_count */ | |
92 PTR_EN pb_pointer[1]; /* list of pointers to blocks (actually longer) | |
93 * followed by empty space until end of page */ | |
94 }; | |
95 | |
96 /* | |
97 * A data block is a leaf in the tree. | |
98 * | |
99 * The text of the lines is at the end of the block. The text of the first line | |
100 * in the block is put at the end, the text of the second line in front of it, | |
101 * etc. Thus the order of the lines is the opposite of the line number. | |
102 */ | |
103 struct data_block | |
104 { | |
105 short_u db_id; /* ID for data block: DATA_ID */ | |
106 unsigned db_free; /* free space available */ | |
107 unsigned db_txt_start; /* byte where text starts */ | |
108 unsigned db_txt_end; /* byte just after data block */ | |
109 linenr_T db_line_count; /* number of lines in this block */ | |
110 unsigned db_index[1]; /* index for start of line (actually bigger) | |
111 * followed by empty space upto db_txt_start | |
112 * followed by the text in the lines until | |
113 * end of page */ | |
114 }; | |
115 | |
116 /* | |
117 * The low bits of db_index hold the actual index. The topmost bit is | |
118 * used for the global command to be able to mark a line. | |
119 * This method is not clean, but otherwise there would be at least one extra | |
120 * byte used for each line. | |
121 * The mark has to be in this place to keep it with the correct line when other | |
122 * lines are inserted or deleted. | |
123 */ | |
124 #define DB_MARKED ((unsigned)1 << ((sizeof(unsigned) * 8) - 1)) | |
125 #define DB_INDEX_MASK (~DB_MARKED) | |
126 | |
127 #define INDEX_SIZE (sizeof(unsigned)) /* size of one db_index entry */ | |
128 #define HEADER_SIZE (sizeof(DATA_BL) - INDEX_SIZE) /* size of data block header */ | |
129 | |
39 | 130 #define B0_FNAME_SIZE_ORG 900 /* what it was in older versions */ |
131 #define B0_FNAME_SIZE 898 | |
132 #define B0_UNAME_SIZE 40 | |
133 #define B0_HNAME_SIZE 40 | |
7 | 134 /* |
135 * Restrict the numbers to 32 bits, otherwise most compilers will complain. | |
136 * This won't detect a 64 bit machine that only swaps a byte in the top 32 | |
137 * bits, but that is crazy anyway. | |
138 */ | |
139 #define B0_MAGIC_LONG 0x30313233L | |
140 #define B0_MAGIC_INT 0x20212223L | |
141 #define B0_MAGIC_SHORT 0x10111213L | |
142 #define B0_MAGIC_CHAR 0x55 | |
143 | |
144 /* | |
145 * Block zero holds all info about the swap file. | |
146 * | |
147 * NOTE: DEFINITION OF BLOCK 0 SHOULD NOT CHANGE! It would make all existing | |
148 * swap files unusable! | |
149 * | |
150 * If size of block0 changes anyway, adjust MIN_SWAP_PAGE_SIZE in vim.h!! | |
151 * | |
1228 | 152 * This block is built up of single bytes, to make it portable across |
7 | 153 * different machines. b0_magic_* is used to check the byte order and size of |
154 * variables, because the rest of the swap file is not portable. | |
155 */ | |
156 struct block0 | |
157 { | |
158 char_u b0_id[2]; /* id for block 0: BLOCK0_ID0 and BLOCK0_ID1 */ | |
159 char_u b0_version[10]; /* Vim version string */ | |
160 char_u b0_page_size[4];/* number of bytes per page */ | |
161 char_u b0_mtime[4]; /* last modification time of file */ | |
162 char_u b0_ino[4]; /* inode of b0_fname */ | |
163 char_u b0_pid[4]; /* process id of creator (or 0) */ | |
164 char_u b0_uname[B0_UNAME_SIZE]; /* name of user (uid if no name) */ | |
165 char_u b0_hname[B0_HNAME_SIZE]; /* host name (if it has a name) */ | |
39 | 166 char_u b0_fname[B0_FNAME_SIZE_ORG]; /* name of file being edited */ |
7 | 167 long b0_magic_long; /* check for byte order of long */ |
168 int b0_magic_int; /* check for byte order of int */ | |
169 short b0_magic_short; /* check for byte order of short */ | |
170 char_u b0_magic_char; /* check for last char */ | |
171 }; | |
39 | 172 |
173 /* | |
625 | 174 * Note: b0_dirty and b0_flags are put at the end of the file name. For very |
39 | 175 * long file names in older versions of Vim they are invalid. |
176 * The 'fileencoding' comes before b0_flags, with a NUL in front. But only | |
177 * when there is room, for very long file names it's omitted. | |
178 */ | |
179 #define B0_DIRTY 0x55 | |
180 #define b0_dirty b0_fname[B0_FNAME_SIZE_ORG-1] | |
181 | |
182 /* | |
183 * The b0_flags field is new in Vim 7.0. | |
184 */ | |
185 #define b0_flags b0_fname[B0_FNAME_SIZE_ORG-2] | |
186 | |
187 /* The lowest two bits contain the fileformat. Zero means it's not set | |
188 * (compatible with Vim 6.x), otherwise it's EOL_UNIX + 1, EOL_DOS + 1 or | |
189 * EOL_MAC + 1. */ | |
190 #define B0_FF_MASK 3 | |
191 | |
192 /* Swap file is in directory of edited file. Used to find the file from | |
193 * different mount points. */ | |
194 #define B0_SAME_DIR 4 | |
195 | |
196 /* The 'fileencoding' is at the end of b0_fname[], with a NUL in front of it. | |
197 * When empty there is only the NUL. */ | |
198 #define B0_HAS_FENC 8 | |
7 | 199 |
200 #define STACK_INCR 5 /* nr of entries added to ml_stack at a time */ | |
201 | |
202 /* | |
203 * The line number where the first mark may be is remembered. | |
204 * If it is 0 there are no marks at all. | |
205 * (always used for the current buffer only, no buffer change possible while | |
206 * executing a global command). | |
207 */ | |
208 static linenr_T lowest_marked = 0; | |
209 | |
210 /* | |
211 * arguments for ml_find_line() | |
212 */ | |
213 #define ML_DELETE 0x11 /* delete line */ | |
214 #define ML_INSERT 0x12 /* insert line */ | |
215 #define ML_FIND 0x13 /* just find the line */ | |
216 #define ML_FLUSH 0x02 /* flush locked block */ | |
217 #define ML_SIMPLE(x) (x & 0x10) /* DEL, INS or FIND */ | |
218 | |
944 | 219 static void ml_upd_block0 __ARGS((buf_T *buf, int set_fname)); |
7 | 220 static void set_b0_fname __ARGS((ZERO_BL *, buf_T *buf)); |
39 | 221 static void set_b0_dir_flag __ARGS((ZERO_BL *b0p, buf_T *buf)); |
222 #ifdef FEAT_MBYTE | |
223 static void add_b0_fenc __ARGS((ZERO_BL *b0p, buf_T *buf)); | |
224 #endif | |
7 | 225 static time_t swapfile_info __ARGS((char_u *)); |
226 static int recov_file_names __ARGS((char_u **, char_u *, int prepend_dot)); | |
227 static int ml_append_int __ARGS((buf_T *, linenr_T, char_u *, colnr_T, int, int)); | |
228 static int ml_delete_int __ARGS((buf_T *, linenr_T, int)); | |
229 static char_u *findswapname __ARGS((buf_T *, char_u **, char_u *)); | |
230 static void ml_flush_line __ARGS((buf_T *)); | |
231 static bhdr_T *ml_new_data __ARGS((memfile_T *, int, int)); | |
232 static bhdr_T *ml_new_ptr __ARGS((memfile_T *)); | |
233 static bhdr_T *ml_find_line __ARGS((buf_T *, linenr_T, int)); | |
234 static int ml_add_stack __ARGS((buf_T *)); | |
235 static void ml_lineadd __ARGS((buf_T *, int)); | |
236 static int b0_magic_wrong __ARGS((ZERO_BL *)); | |
237 #ifdef CHECK_INODE | |
238 static int fnamecmp_ino __ARGS((char_u *, char_u *, long)); | |
239 #endif | |
240 static void long_to_char __ARGS((long, char_u *)); | |
241 static long char_to_long __ARGS((char_u *)); | |
242 #if defined(UNIX) || defined(WIN3264) | |
243 static char_u *make_percent_swname __ARGS((char_u *dir, char_u *name)); | |
244 #endif | |
245 #ifdef FEAT_BYTEOFF | |
246 static void ml_updatechunk __ARGS((buf_T *buf, long line, long len, int updtype)); | |
247 #endif | |
2145
de0e7ca61893
updated for version 7.2.427
Bram Moolenaar <bram@zimbu.org>
parents:
2108
diff
changeset
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248 #ifdef HAVE_READLINK |
de0e7ca61893
updated for version 7.2.427
Bram Moolenaar <bram@zimbu.org>
parents:
2108
diff
changeset
|
249 static int resolve_symlink __ARGS((char_u *fname, char_u *buf)); |
de0e7ca61893
updated for version 7.2.427
Bram Moolenaar <bram@zimbu.org>
parents:
2108
diff
changeset
|
250 #endif |
7 | 251 |
252 /* | |
625 | 253 * Open a new memline for "buf". |
7 | 254 * |
625 | 255 * Return FAIL for failure, OK otherwise. |
7 | 256 */ |
257 int | |
625 | 258 ml_open(buf) |
259 buf_T *buf; | |
7 | 260 { |
261 memfile_T *mfp; | |
262 bhdr_T *hp = NULL; | |
263 ZERO_BL *b0p; | |
264 PTR_BL *pp; | |
265 DATA_BL *dp; | |
266 | |
625 | 267 /* |
268 * init fields in memline struct | |
269 */ | |
270 buf->b_ml.ml_stack_size = 0; /* no stack yet */ | |
271 buf->b_ml.ml_stack = NULL; /* no stack yet */ | |
272 buf->b_ml.ml_stack_top = 0; /* nothing in the stack */ | |
273 buf->b_ml.ml_locked = NULL; /* no cached block */ | |
274 buf->b_ml.ml_line_lnum = 0; /* no cached line */ | |
7 | 275 #ifdef FEAT_BYTEOFF |
625 | 276 buf->b_ml.ml_chunksize = NULL; |
7 | 277 #endif |
278 | |
625 | 279 /* |
280 * When 'updatecount' is non-zero swap file may be opened later. | |
281 */ | |
282 if (p_uc && buf->b_p_swf) | |
283 buf->b_may_swap = TRUE; | |
7 | 284 else |
625 | 285 buf->b_may_swap = FALSE; |
286 | |
287 /* | |
288 * Open the memfile. No swap file is created yet. | |
289 */ | |
7 | 290 mfp = mf_open(NULL, 0); |
291 if (mfp == NULL) | |
292 goto error; | |
293 | |
625 | 294 buf->b_ml.ml_mfp = mfp; |
295 buf->b_ml.ml_flags = ML_EMPTY; | |
296 buf->b_ml.ml_line_count = 1; | |
13 | 297 #ifdef FEAT_LINEBREAK |
298 curwin->w_nrwidth_line_count = 0; | |
299 #endif | |
7 | 300 |
301 #if defined(MSDOS) && !defined(DJGPP) | |
302 /* for 16 bit MS-DOS create a swapfile now, because we run out of | |
303 * memory very quickly */ | |
304 if (p_uc != 0) | |
625 | 305 ml_open_file(buf); |
7 | 306 #endif |
307 | |
308 /* | |
309 * fill block0 struct and write page 0 | |
310 */ | |
311 if ((hp = mf_new(mfp, FALSE, 1)) == NULL) | |
312 goto error; | |
313 if (hp->bh_bnum != 0) | |
314 { | |
315 EMSG(_("E298: Didn't get block nr 0?")); | |
316 goto error; | |
317 } | |
318 b0p = (ZERO_BL *)(hp->bh_data); | |
319 | |
320 b0p->b0_id[0] = BLOCK0_ID0; | |
321 b0p->b0_id[1] = BLOCK0_ID1; | |
322 b0p->b0_magic_long = (long)B0_MAGIC_LONG; | |
323 b0p->b0_magic_int = (int)B0_MAGIC_INT; | |
324 b0p->b0_magic_short = (short)B0_MAGIC_SHORT; | |
325 b0p->b0_magic_char = B0_MAGIC_CHAR; | |
326 STRNCPY(b0p->b0_version, "VIM ", 4); | |
327 STRNCPY(b0p->b0_version + 4, Version, 6); | |
328 long_to_char((long)mfp->mf_page_size, b0p->b0_page_size); | |
625 | 329 |
800 | 330 #ifdef FEAT_SPELL |
331 if (!buf->b_spell) | |
332 #endif | |
625 | 333 { |
334 b0p->b0_dirty = buf->b_changed ? B0_DIRTY : 0; | |
335 b0p->b0_flags = get_fileformat(buf) + 1; | |
336 set_b0_fname(b0p, buf); | |
337 (void)get_user_name(b0p->b0_uname, B0_UNAME_SIZE); | |
338 b0p->b0_uname[B0_UNAME_SIZE - 1] = NUL; | |
339 mch_get_host_name(b0p->b0_hname, B0_HNAME_SIZE); | |
340 b0p->b0_hname[B0_HNAME_SIZE - 1] = NUL; | |
341 long_to_char(mch_get_pid(), b0p->b0_pid); | |
342 } | |
7 | 343 |
344 /* | |
345 * Always sync block number 0 to disk, so we can check the file name in | |
625 | 346 * the swap file in findswapname(). Don't do this for help files though |
347 * and spell buffer though. | |
7 | 348 * Only works when there's a swapfile, otherwise it's done when the file |
349 * is created. | |
350 */ | |
351 mf_put(mfp, hp, TRUE, FALSE); | |
625 | 352 if (!buf->b_help && !B_SPELL(buf)) |
7 | 353 (void)mf_sync(mfp, 0); |
354 | |
625 | 355 /* |
356 * Fill in root pointer block and write page 1. | |
357 */ | |
7 | 358 if ((hp = ml_new_ptr(mfp)) == NULL) |
359 goto error; | |
360 if (hp->bh_bnum != 1) | |
361 { | |
362 EMSG(_("E298: Didn't get block nr 1?")); | |
363 goto error; | |
364 } | |
365 pp = (PTR_BL *)(hp->bh_data); | |
366 pp->pb_count = 1; | |
367 pp->pb_pointer[0].pe_bnum = 2; | |
368 pp->pb_pointer[0].pe_page_count = 1; | |
369 pp->pb_pointer[0].pe_old_lnum = 1; | |
370 pp->pb_pointer[0].pe_line_count = 1; /* line count after insertion */ | |
371 mf_put(mfp, hp, TRUE, FALSE); | |
372 | |
625 | 373 /* |
374 * Allocate first data block and create an empty line 1. | |
375 */ | |
7 | 376 if ((hp = ml_new_data(mfp, FALSE, 1)) == NULL) |
377 goto error; | |
378 if (hp->bh_bnum != 2) | |
379 { | |
380 EMSG(_("E298: Didn't get block nr 2?")); | |
381 goto error; | |
382 } | |
383 | |
384 dp = (DATA_BL *)(hp->bh_data); | |
385 dp->db_index[0] = --dp->db_txt_start; /* at end of block */ | |
386 dp->db_free -= 1 + INDEX_SIZE; | |
387 dp->db_line_count = 1; | |
2003 | 388 *((char_u *)dp + dp->db_txt_start) = NUL; /* empty line */ |
7 | 389 |
390 return OK; | |
391 | |
392 error: | |
393 if (mfp != NULL) | |
394 { | |
395 if (hp) | |
396 mf_put(mfp, hp, FALSE, FALSE); | |
397 mf_close(mfp, TRUE); /* will also free(mfp->mf_fname) */ | |
398 } | |
625 | 399 buf->b_ml.ml_mfp = NULL; |
7 | 400 return FAIL; |
401 } | |
402 | |
403 /* | |
404 * ml_setname() is called when the file name of "buf" has been changed. | |
405 * It may rename the swap file. | |
406 */ | |
407 void | |
408 ml_setname(buf) | |
409 buf_T *buf; | |
410 { | |
411 int success = FALSE; | |
412 memfile_T *mfp; | |
413 char_u *fname; | |
414 char_u *dirp; | |
415 #if defined(MSDOS) || defined(MSWIN) | |
416 char_u *p; | |
417 #endif | |
418 | |
419 mfp = buf->b_ml.ml_mfp; | |
420 if (mfp->mf_fd < 0) /* there is no swap file yet */ | |
421 { | |
422 /* | |
423 * When 'updatecount' is 0 and 'noswapfile' there is no swap file. | |
424 * For help files we will make a swap file now. | |
425 */ | |
426 if (p_uc != 0) | |
427 ml_open_file(buf); /* create a swap file */ | |
428 return; | |
429 } | |
430 | |
431 /* | |
432 * Try all directories in the 'directory' option. | |
433 */ | |
434 dirp = p_dir; | |
435 for (;;) | |
436 { | |
437 if (*dirp == NUL) /* tried all directories, fail */ | |
438 break; | |
43 | 439 fname = findswapname(buf, &dirp, mfp->mf_fname); |
440 /* alloc's fname */ | |
7 | 441 if (fname == NULL) /* no file name found for this dir */ |
442 continue; | |
443 | |
444 #if defined(MSDOS) || defined(MSWIN) | |
445 /* | |
446 * Set full pathname for swap file now, because a ":!cd dir" may | |
447 * change directory without us knowing it. | |
448 */ | |
449 p = FullName_save(fname, FALSE); | |
450 vim_free(fname); | |
451 fname = p; | |
452 if (fname == NULL) | |
453 continue; | |
454 #endif | |
455 /* if the file name is the same we don't have to do anything */ | |
456 if (fnamecmp(fname, mfp->mf_fname) == 0) | |
457 { | |
458 vim_free(fname); | |
459 success = TRUE; | |
460 break; | |
461 } | |
462 /* need to close the swap file before renaming */ | |
463 if (mfp->mf_fd >= 0) | |
464 { | |
465 close(mfp->mf_fd); | |
466 mfp->mf_fd = -1; | |
467 } | |
468 | |
469 /* try to rename the swap file */ | |
470 if (vim_rename(mfp->mf_fname, fname) == 0) | |
471 { | |
472 success = TRUE; | |
473 vim_free(mfp->mf_fname); | |
474 mfp->mf_fname = fname; | |
475 vim_free(mfp->mf_ffname); | |
476 #if defined(MSDOS) || defined(MSWIN) | |
477 mfp->mf_ffname = NULL; /* mf_fname is full pathname already */ | |
478 #else | |
479 mf_set_ffname(mfp); | |
480 #endif | |
39 | 481 ml_upd_block0(buf, FALSE); |
7 | 482 break; |
483 } | |
484 vim_free(fname); /* this fname didn't work, try another */ | |
485 } | |
486 | |
487 if (mfp->mf_fd == -1) /* need to (re)open the swap file */ | |
488 { | |
489 mfp->mf_fd = mch_open((char *)mfp->mf_fname, O_RDWR | O_EXTRA, 0); | |
490 if (mfp->mf_fd < 0) | |
491 { | |
492 /* could not (re)open the swap file, what can we do???? */ | |
493 EMSG(_("E301: Oops, lost the swap file!!!")); | |
494 return; | |
495 } | |
2003 | 496 #ifdef HAVE_FD_CLOEXEC |
497 { | |
498 int fdflags = fcntl(mfp->mf_fd, F_GETFD); | |
499 if (fdflags >= 0 && (fdflags & FD_CLOEXEC) == 0) | |
500 fcntl(mfp->mf_fd, F_SETFD, fdflags | FD_CLOEXEC); | |
501 } | |
502 #endif | |
7 | 503 } |
504 if (!success) | |
505 EMSG(_("E302: Could not rename swap file")); | |
506 } | |
507 | |
508 /* | |
509 * Open a file for the memfile for all buffers that are not readonly or have | |
510 * been modified. | |
511 * Used when 'updatecount' changes from zero to non-zero. | |
512 */ | |
513 void | |
514 ml_open_files() | |
515 { | |
516 buf_T *buf; | |
517 | |
518 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
519 if (!buf->b_p_ro || buf->b_changed) | |
520 ml_open_file(buf); | |
521 } | |
522 | |
523 /* | |
524 * Open a swap file for an existing memfile, if there is no swap file yet. | |
525 * If we are unable to find a file name, mf_fname will be NULL | |
526 * and the memfile will be in memory only (no recovery possible). | |
527 */ | |
528 void | |
529 ml_open_file(buf) | |
530 buf_T *buf; | |
531 { | |
532 memfile_T *mfp; | |
533 char_u *fname; | |
534 char_u *dirp; | |
535 | |
536 mfp = buf->b_ml.ml_mfp; | |
537 if (mfp == NULL || mfp->mf_fd >= 0 || !buf->b_p_swf) | |
538 return; /* nothing to do */ | |
539 | |
748 | 540 #ifdef FEAT_SPELL |
625 | 541 /* For a spell buffer use a temp file name. */ |
542 if (buf->b_spell) | |
543 { | |
544 fname = vim_tempname('s'); | |
545 if (fname != NULL) | |
546 (void)mf_open_file(mfp, fname); /* consumes fname! */ | |
547 buf->b_may_swap = FALSE; | |
548 return; | |
549 } | |
550 #endif | |
551 | |
7 | 552 /* |
553 * Try all directories in 'directory' option. | |
554 */ | |
555 dirp = p_dir; | |
556 for (;;) | |
557 { | |
558 if (*dirp == NUL) | |
559 break; | |
560 /* There is a small chance that between chosing the swap file name and | |
561 * creating it, another Vim creates the file. In that case the | |
562 * creation will fail and we will use another directory. */ | |
43 | 563 fname = findswapname(buf, &dirp, NULL); /* allocates fname */ |
7 | 564 if (fname == NULL) |
565 continue; | |
566 if (mf_open_file(mfp, fname) == OK) /* consumes fname! */ | |
567 { | |
568 #if defined(MSDOS) || defined(MSWIN) || defined(RISCOS) | |
569 /* | |
570 * set full pathname for swap file now, because a ":!cd dir" may | |
571 * change directory without us knowing it. | |
572 */ | |
573 mf_fullname(mfp); | |
574 #endif | |
39 | 575 ml_upd_block0(buf, FALSE); |
576 | |
7 | 577 /* Flush block zero, so others can read it */ |
578 if (mf_sync(mfp, MFS_ZERO) == OK) | |
630 | 579 { |
580 /* Mark all blocks that should be in the swapfile as dirty. | |
581 * Needed for when the 'swapfile' option was reset, so that | |
582 * the swap file was deleted, and then on again. */ | |
583 mf_set_dirty(mfp); | |
7 | 584 break; |
630 | 585 } |
7 | 586 /* Writing block 0 failed: close the file and try another dir */ |
587 mf_close_file(buf, FALSE); | |
588 } | |
589 } | |
590 | |
591 if (mfp->mf_fname == NULL) /* Failed! */ | |
592 { | |
593 need_wait_return = TRUE; /* call wait_return later */ | |
594 ++no_wait_return; | |
595 (void)EMSG2(_("E303: Unable to open swap file for \"%s\", recovery impossible"), | |
596 buf_spname(buf) != NULL | |
597 ? (char_u *)buf_spname(buf) | |
598 : buf->b_fname); | |
599 --no_wait_return; | |
600 } | |
601 | |
602 /* don't try to open a swap file again */ | |
603 buf->b_may_swap = FALSE; | |
604 } | |
605 | |
606 /* | |
607 * If still need to create a swap file, and starting to edit a not-readonly | |
608 * file, or reading into an existing buffer, create a swap file now. | |
609 */ | |
610 void | |
611 check_need_swap(newfile) | |
612 int newfile; /* reading file into new buffer */ | |
613 { | |
614 if (curbuf->b_may_swap && (!curbuf->b_p_ro || !newfile)) | |
615 ml_open_file(curbuf); | |
616 } | |
617 | |
618 /* | |
619 * Close memline for buffer 'buf'. | |
620 * If 'del_file' is TRUE, delete the swap file | |
621 */ | |
622 void | |
623 ml_close(buf, del_file) | |
624 buf_T *buf; | |
625 int del_file; | |
626 { | |
627 if (buf->b_ml.ml_mfp == NULL) /* not open */ | |
628 return; | |
629 mf_close(buf->b_ml.ml_mfp, del_file); /* close the .swp file */ | |
630 if (buf->b_ml.ml_line_lnum != 0 && (buf->b_ml.ml_flags & ML_LINE_DIRTY)) | |
631 vim_free(buf->b_ml.ml_line_ptr); | |
632 vim_free(buf->b_ml.ml_stack); | |
633 #ifdef FEAT_BYTEOFF | |
634 vim_free(buf->b_ml.ml_chunksize); | |
635 buf->b_ml.ml_chunksize = NULL; | |
636 #endif | |
637 buf->b_ml.ml_mfp = NULL; | |
638 | |
639 /* Reset the "recovered" flag, give the ATTENTION prompt the next time | |
640 * this buffer is loaded. */ | |
641 buf->b_flags &= ~BF_RECOVERED; | |
642 } | |
643 | |
644 /* | |
645 * Close all existing memlines and memfiles. | |
646 * Only used when exiting. | |
647 * When 'del_file' is TRUE, delete the memfiles. | |
165 | 648 * But don't delete files that were ":preserve"d when we are POSIX compatible. |
7 | 649 */ |
650 void | |
651 ml_close_all(del_file) | |
652 int del_file; | |
653 { | |
654 buf_T *buf; | |
655 | |
656 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
165 | 657 ml_close(buf, del_file && ((buf->b_flags & BF_PRESERVED) == 0 |
658 || vim_strchr(p_cpo, CPO_PRESERVE) == NULL)); | |
7 | 659 #ifdef TEMPDIRNAMES |
660 vim_deltempdir(); /* delete created temp directory */ | |
661 #endif | |
662 } | |
663 | |
664 /* | |
665 * Close all memfiles for not modified buffers. | |
666 * Only use just before exiting! | |
667 */ | |
668 void | |
669 ml_close_notmod() | |
670 { | |
671 buf_T *buf; | |
672 | |
673 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
674 if (!bufIsChanged(buf)) | |
675 ml_close(buf, TRUE); /* close all not-modified buffers */ | |
676 } | |
677 | |
678 /* | |
679 * Update the timestamp in the .swp file. | |
680 * Used when the file has been written. | |
681 */ | |
682 void | |
683 ml_timestamp(buf) | |
684 buf_T *buf; | |
685 { | |
39 | 686 ml_upd_block0(buf, TRUE); |
687 } | |
688 | |
689 /* | |
690 * Update the timestamp or the B0_SAME_DIR flag of the .swp file. | |
691 */ | |
692 static void | |
944 | 693 ml_upd_block0(buf, set_fname) |
39 | 694 buf_T *buf; |
944 | 695 int set_fname; |
39 | 696 { |
7 | 697 memfile_T *mfp; |
698 bhdr_T *hp; | |
699 ZERO_BL *b0p; | |
700 | |
701 mfp = buf->b_ml.ml_mfp; | |
702 if (mfp == NULL || (hp = mf_get(mfp, (blocknr_T)0, 1)) == NULL) | |
703 return; | |
704 b0p = (ZERO_BL *)(hp->bh_data); | |
705 if (b0p->b0_id[0] != BLOCK0_ID0 || b0p->b0_id[1] != BLOCK0_ID1) | |
39 | 706 EMSG(_("E304: ml_upd_block0(): Didn't get block 0??")); |
7 | 707 else |
39 | 708 { |
944 | 709 if (set_fname) |
39 | 710 set_b0_fname(b0p, buf); |
711 else | |
712 set_b0_dir_flag(b0p, buf); | |
713 } | |
7 | 714 mf_put(mfp, hp, TRUE, FALSE); |
715 } | |
716 | |
717 /* | |
718 * Write file name and timestamp into block 0 of a swap file. | |
719 * Also set buf->b_mtime. | |
720 * Don't use NameBuff[]!!! | |
721 */ | |
722 static void | |
723 set_b0_fname(b0p, buf) | |
724 ZERO_BL *b0p; | |
725 buf_T *buf; | |
726 { | |
727 struct stat st; | |
728 | |
729 if (buf->b_ffname == NULL) | |
730 b0p->b0_fname[0] = NUL; | |
731 else | |
732 { | |
733 #if defined(MSDOS) || defined(MSWIN) || defined(AMIGA) || defined(RISCOS) | |
39 | 734 /* Systems that cannot translate "~user" back into a path: copy the |
735 * file name unmodified. Do use slashes instead of backslashes for | |
736 * portability. */ | |
419 | 737 vim_strncpy(b0p->b0_fname, buf->b_ffname, B0_FNAME_SIZE - 1); |
39 | 738 # ifdef BACKSLASH_IN_FILENAME |
739 forward_slash(b0p->b0_fname); | |
740 # endif | |
7 | 741 #else |
742 size_t flen, ulen; | |
743 char_u uname[B0_UNAME_SIZE]; | |
744 | |
745 /* | |
746 * For a file under the home directory of the current user, we try to | |
747 * replace the home directory path with "~user". This helps when | |
748 * editing the same file on different machines over a network. | |
749 * First replace home dir path with "~/" with home_replace(). | |
750 * Then insert the user name to get "~user/". | |
751 */ | |
752 home_replace(NULL, buf->b_ffname, b0p->b0_fname, B0_FNAME_SIZE, TRUE); | |
753 if (b0p->b0_fname[0] == '~') | |
754 { | |
755 flen = STRLEN(b0p->b0_fname); | |
756 /* If there is no user name or it is too long, don't use "~/" */ | |
757 if (get_user_name(uname, B0_UNAME_SIZE) == FAIL | |
758 || (ulen = STRLEN(uname)) + flen > B0_FNAME_SIZE - 1) | |
419 | 759 vim_strncpy(b0p->b0_fname, buf->b_ffname, B0_FNAME_SIZE - 1); |
7 | 760 else |
761 { | |
762 mch_memmove(b0p->b0_fname + ulen + 1, b0p->b0_fname + 1, flen); | |
763 mch_memmove(b0p->b0_fname + 1, uname, ulen); | |
764 } | |
765 } | |
766 #endif | |
767 if (mch_stat((char *)buf->b_ffname, &st) >= 0) | |
768 { | |
769 long_to_char((long)st.st_mtime, b0p->b0_mtime); | |
770 #ifdef CHECK_INODE | |
771 long_to_char((long)st.st_ino, b0p->b0_ino); | |
772 #endif | |
773 buf_store_time(buf, &st, buf->b_ffname); | |
774 buf->b_mtime_read = buf->b_mtime; | |
775 } | |
776 else | |
777 { | |
778 long_to_char(0L, b0p->b0_mtime); | |
779 #ifdef CHECK_INODE | |
780 long_to_char(0L, b0p->b0_ino); | |
781 #endif | |
782 buf->b_mtime = 0; | |
783 buf->b_mtime_read = 0; | |
784 buf->b_orig_size = 0; | |
785 buf->b_orig_mode = 0; | |
786 } | |
787 } | |
39 | 788 |
789 #ifdef FEAT_MBYTE | |
790 /* Also add the 'fileencoding' if there is room. */ | |
791 add_b0_fenc(b0p, curbuf); | |
792 #endif | |
7 | 793 } |
794 | |
795 /* | |
39 | 796 * Update the B0_SAME_DIR flag of the swap file. It's set if the file and the |
797 * swapfile for "buf" are in the same directory. | |
798 * This is fail safe: if we are not sure the directories are equal the flag is | |
799 * not set. | |
800 */ | |
801 static void | |
802 set_b0_dir_flag(b0p, buf) | |
803 ZERO_BL *b0p; | |
804 buf_T *buf; | |
805 { | |
806 if (same_directory(buf->b_ml.ml_mfp->mf_fname, buf->b_ffname)) | |
807 b0p->b0_flags |= B0_SAME_DIR; | |
808 else | |
809 b0p->b0_flags &= ~B0_SAME_DIR; | |
810 } | |
811 | |
812 #ifdef FEAT_MBYTE | |
813 /* | |
814 * When there is room, add the 'fileencoding' to block zero. | |
815 */ | |
816 static void | |
817 add_b0_fenc(b0p, buf) | |
818 ZERO_BL *b0p; | |
819 buf_T *buf; | |
820 { | |
821 int n; | |
822 | |
835 | 823 n = (int)STRLEN(buf->b_p_fenc); |
39 | 824 if (STRLEN(b0p->b0_fname) + n + 1 > B0_FNAME_SIZE) |
825 b0p->b0_flags &= ~B0_HAS_FENC; | |
826 else | |
827 { | |
828 mch_memmove((char *)b0p->b0_fname + B0_FNAME_SIZE - n, | |
829 (char *)buf->b_p_fenc, (size_t)n); | |
830 *(b0p->b0_fname + B0_FNAME_SIZE - n - 1) = NUL; | |
831 b0p->b0_flags |= B0_HAS_FENC; | |
832 } | |
833 } | |
834 #endif | |
835 | |
836 | |
837 /* | |
7 | 838 * try to recover curbuf from the .swp file |
839 */ | |
840 void | |
841 ml_recover() | |
842 { | |
843 buf_T *buf = NULL; | |
844 memfile_T *mfp = NULL; | |
845 char_u *fname; | |
846 bhdr_T *hp = NULL; | |
847 ZERO_BL *b0p; | |
39 | 848 int b0_ff; |
849 char_u *b0_fenc = NULL; | |
7 | 850 PTR_BL *pp; |
851 DATA_BL *dp; | |
852 infoptr_T *ip; | |
853 blocknr_T bnum; | |
854 int page_count; | |
855 struct stat org_stat, swp_stat; | |
856 int len; | |
857 int directly; | |
858 linenr_T lnum; | |
859 char_u *p; | |
860 int i; | |
861 long error; | |
862 int cannot_open; | |
863 linenr_T line_count; | |
864 int has_error; | |
865 int idx; | |
866 int top; | |
867 int txt_start; | |
868 off_t size; | |
869 int called_from_main; | |
870 int serious_error = TRUE; | |
871 long mtime; | |
872 int attr; | |
873 | |
874 recoverymode = TRUE; | |
875 called_from_main = (curbuf->b_ml.ml_mfp == NULL); | |
876 attr = hl_attr(HLF_E); | |
1975 | 877 |
878 /* | |
879 * If the file name ends in ".s[uvw][a-z]" we assume this is the swap file. | |
880 * Otherwise a search is done to find the swap file(s). | |
881 */ | |
7 | 882 fname = curbuf->b_fname; |
883 if (fname == NULL) /* When there is no file name */ | |
884 fname = (char_u *)""; | |
885 len = (int)STRLEN(fname); | |
886 if (len >= 4 && | |
887 #if defined(VMS) || defined(RISCOS) | |
1975 | 888 STRNICMP(fname + len - 4, "_s" , 2) |
7 | 889 #else |
1975 | 890 STRNICMP(fname + len - 4, ".s" , 2) |
7 | 891 #endif |
1975 | 892 == 0 |
893 && vim_strchr((char_u *)"UVWuvw", fname[len - 2]) != NULL | |
894 && ASCII_ISALPHA(fname[len - 1])) | |
7 | 895 { |
896 directly = TRUE; | |
897 fname = vim_strsave(fname); /* make a copy for mf_open() */ | |
898 } | |
899 else | |
900 { | |
901 directly = FALSE; | |
902 | |
903 /* count the number of matching swap files */ | |
904 len = recover_names(&fname, FALSE, 0); | |
905 if (len == 0) /* no swap files found */ | |
906 { | |
907 EMSG2(_("E305: No swap file found for %s"), fname); | |
908 goto theend; | |
909 } | |
910 if (len == 1) /* one swap file found, use it */ | |
911 i = 1; | |
912 else /* several swap files found, choose */ | |
913 { | |
914 /* list the names of the swap files */ | |
915 (void)recover_names(&fname, TRUE, 0); | |
916 msg_putchar('\n'); | |
917 MSG_PUTS(_("Enter number of swap file to use (0 to quit): ")); | |
374 | 918 i = get_number(FALSE, NULL); |
7 | 919 if (i < 1 || i > len) |
920 goto theend; | |
921 } | |
922 /* get the swap file name that will be used */ | |
923 (void)recover_names(&fname, FALSE, i); | |
924 } | |
925 if (fname == NULL) | |
926 goto theend; /* out of memory */ | |
927 | |
928 /* When called from main() still need to initialize storage structure */ | |
625 | 929 if (called_from_main && ml_open(curbuf) == FAIL) |
7 | 930 getout(1); |
931 | |
932 /* | |
933 * allocate a buffer structure (only the memline in it is really used) | |
934 */ | |
935 buf = (buf_T *)alloc((unsigned)sizeof(buf_T)); | |
936 if (buf == NULL) | |
937 { | |
938 vim_free(fname); | |
939 goto theend; | |
940 } | |
941 | |
942 /* | |
943 * init fields in memline struct | |
944 */ | |
945 buf->b_ml.ml_stack_size = 0; /* no stack yet */ | |
946 buf->b_ml.ml_stack = NULL; /* no stack yet */ | |
947 buf->b_ml.ml_stack_top = 0; /* nothing in the stack */ | |
948 buf->b_ml.ml_line_lnum = 0; /* no cached line */ | |
949 buf->b_ml.ml_locked = NULL; /* no locked block */ | |
950 buf->b_ml.ml_flags = 0; | |
951 | |
952 /* | |
953 * open the memfile from the old swap file | |
954 */ | |
955 p = vim_strsave(fname); /* save fname for the message | |
956 (mf_open() may free fname) */ | |
957 mfp = mf_open(fname, O_RDONLY); /* consumes fname! */ | |
958 if (mfp == NULL || mfp->mf_fd < 0) | |
959 { | |
960 if (p != NULL) | |
961 { | |
962 EMSG2(_("E306: Cannot open %s"), p); | |
963 vim_free(p); | |
964 } | |
965 goto theend; | |
966 } | |
967 vim_free(p); | |
968 buf->b_ml.ml_mfp = mfp; | |
969 | |
970 /* | |
971 * The page size set in mf_open() might be different from the page size | |
972 * used in the swap file, we must get it from block 0. But to read block | |
973 * 0 we need a page size. Use the minimal size for block 0 here, it will | |
974 * be set to the real value below. | |
975 */ | |
976 mfp->mf_page_size = MIN_SWAP_PAGE_SIZE; | |
977 | |
978 /* | |
979 * try to read block 0 | |
980 */ | |
981 if ((hp = mf_get(mfp, (blocknr_T)0, 1)) == NULL) | |
982 { | |
983 msg_start(); | |
984 MSG_PUTS_ATTR(_("Unable to read block 0 from "), attr | MSG_HIST); | |
985 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST); | |
986 MSG_PUTS_ATTR( | |
987 _("\nMaybe no changes were made or Vim did not update the swap file."), | |
988 attr | MSG_HIST); | |
989 msg_end(); | |
990 goto theend; | |
991 } | |
992 b0p = (ZERO_BL *)(hp->bh_data); | |
993 if (STRNCMP(b0p->b0_version, "VIM 3.0", 7) == 0) | |
994 { | |
995 msg_start(); | |
996 msg_outtrans_attr(mfp->mf_fname, MSG_HIST); | |
997 MSG_PUTS_ATTR(_(" cannot be used with this version of Vim.\n"), | |
998 MSG_HIST); | |
999 MSG_PUTS_ATTR(_("Use Vim version 3.0.\n"), MSG_HIST); | |
1000 msg_end(); | |
1001 goto theend; | |
1002 } | |
1003 if (b0p->b0_id[0] != BLOCK0_ID0 || b0p->b0_id[1] != BLOCK0_ID1) | |
1004 { | |
1005 EMSG2(_("E307: %s does not look like a Vim swap file"), mfp->mf_fname); | |
1006 goto theend; | |
1007 } | |
1008 if (b0_magic_wrong(b0p)) | |
1009 { | |
1010 msg_start(); | |
1011 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST); | |
1012 #if defined(MSDOS) || defined(MSWIN) | |
1013 if (STRNCMP(b0p->b0_hname, "PC ", 3) == 0) | |
1014 MSG_PUTS_ATTR(_(" cannot be used with this version of Vim.\n"), | |
1015 attr | MSG_HIST); | |
1016 else | |
1017 #endif | |
1018 MSG_PUTS_ATTR(_(" cannot be used on this computer.\n"), | |
1019 attr | MSG_HIST); | |
1020 MSG_PUTS_ATTR(_("The file was created on "), attr | MSG_HIST); | |
1021 /* avoid going past the end of a currupted hostname */ | |
1022 b0p->b0_fname[0] = NUL; | |
1023 MSG_PUTS_ATTR(b0p->b0_hname, attr | MSG_HIST); | |
1024 MSG_PUTS_ATTR(_(",\nor the file has been damaged."), attr | MSG_HIST); | |
1025 msg_end(); | |
1026 goto theend; | |
1027 } | |
1105 | 1028 |
7 | 1029 /* |
1030 * If we guessed the wrong page size, we have to recalculate the | |
1031 * highest block number in the file. | |
1032 */ | |
1033 if (mfp->mf_page_size != (unsigned)char_to_long(b0p->b0_page_size)) | |
1034 { | |
1105 | 1035 unsigned previous_page_size = mfp->mf_page_size; |
1036 | |
7 | 1037 mf_new_page_size(mfp, (unsigned)char_to_long(b0p->b0_page_size)); |
1105 | 1038 if (mfp->mf_page_size < previous_page_size) |
1039 { | |
1040 msg_start(); | |
1041 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST); | |
1042 MSG_PUTS_ATTR(_(" has been damaged (page size is smaller than minimum value).\n"), | |
1043 attr | MSG_HIST); | |
1044 msg_end(); | |
1045 goto theend; | |
1046 } | |
7 | 1047 if ((size = lseek(mfp->mf_fd, (off_t)0L, SEEK_END)) <= 0) |
1048 mfp->mf_blocknr_max = 0; /* no file or empty file */ | |
1049 else | |
1050 mfp->mf_blocknr_max = (blocknr_T)(size / mfp->mf_page_size); | |
1051 mfp->mf_infile_count = mfp->mf_blocknr_max; | |
1105 | 1052 |
1053 /* need to reallocate the memory used to store the data */ | |
1054 p = alloc(mfp->mf_page_size); | |
1055 if (p == NULL) | |
1056 goto theend; | |
1057 mch_memmove(p, hp->bh_data, previous_page_size); | |
1058 vim_free(hp->bh_data); | |
1059 hp->bh_data = p; | |
1060 b0p = (ZERO_BL *)(hp->bh_data); | |
7 | 1061 } |
1062 | |
1063 /* | |
1064 * If .swp file name given directly, use name from swap file for buffer. | |
1065 */ | |
1066 if (directly) | |
1067 { | |
1068 expand_env(b0p->b0_fname, NameBuff, MAXPATHL); | |
1069 if (setfname(curbuf, NameBuff, NULL, TRUE) == FAIL) | |
1070 goto theend; | |
1071 } | |
1072 | |
1073 home_replace(NULL, mfp->mf_fname, NameBuff, MAXPATHL, TRUE); | |
274 | 1074 smsg((char_u *)_("Using swap file \"%s\""), NameBuff); |
7 | 1075 |
1076 if (buf_spname(curbuf) != NULL) | |
1077 STRCPY(NameBuff, buf_spname(curbuf)); | |
1078 else | |
1079 home_replace(NULL, curbuf->b_ffname, NameBuff, MAXPATHL, TRUE); | |
274 | 1080 smsg((char_u *)_("Original file \"%s\""), NameBuff); |
7 | 1081 msg_putchar('\n'); |
1082 | |
1083 /* | |
1084 * check date of swap file and original file | |
1085 */ | |
1086 mtime = char_to_long(b0p->b0_mtime); | |
1087 if (curbuf->b_ffname != NULL | |
1088 && mch_stat((char *)curbuf->b_ffname, &org_stat) != -1 | |
1089 && ((mch_stat((char *)mfp->mf_fname, &swp_stat) != -1 | |
1090 && org_stat.st_mtime > swp_stat.st_mtime) | |
1091 || org_stat.st_mtime != mtime)) | |
1092 { | |
1093 EMSG(_("E308: Warning: Original file may have been changed")); | |
1094 } | |
1095 out_flush(); | |
39 | 1096 |
1097 /* Get the 'fileformat' and 'fileencoding' from block zero. */ | |
1098 b0_ff = (b0p->b0_flags & B0_FF_MASK); | |
1099 if (b0p->b0_flags & B0_HAS_FENC) | |
1100 { | |
1101 for (p = b0p->b0_fname + B0_FNAME_SIZE; | |
1102 p > b0p->b0_fname && p[-1] != NUL; --p) | |
1103 ; | |
835 | 1104 b0_fenc = vim_strnsave(p, (int)(b0p->b0_fname + B0_FNAME_SIZE - p)); |
39 | 1105 } |
1106 | |
7 | 1107 mf_put(mfp, hp, FALSE, FALSE); /* release block 0 */ |
1108 hp = NULL; | |
1109 | |
1110 /* | |
1111 * Now that we are sure that the file is going to be recovered, clear the | |
1112 * contents of the current buffer. | |
1113 */ | |
1114 while (!(curbuf->b_ml.ml_flags & ML_EMPTY)) | |
1115 ml_delete((linenr_T)1, FALSE); | |
1116 | |
1117 /* | |
1118 * Try reading the original file to obtain the values of 'fileformat', | |
1119 * 'fileencoding', etc. Ignore errors. The text itself is not used. | |
1120 */ | |
1121 if (curbuf->b_ffname != NULL) | |
1122 { | |
1123 (void)readfile(curbuf->b_ffname, NULL, (linenr_T)0, | |
1124 (linenr_T)0, (linenr_T)MAXLNUM, NULL, READ_NEW); | |
1125 while (!(curbuf->b_ml.ml_flags & ML_EMPTY)) | |
1126 ml_delete((linenr_T)1, FALSE); | |
1127 } | |
1128 | |
39 | 1129 /* Use the 'fileformat' and 'fileencoding' as stored in the swap file. */ |
1130 if (b0_ff != 0) | |
1131 set_fileformat(b0_ff - 1, OPT_LOCAL); | |
1132 if (b0_fenc != NULL) | |
1133 { | |
1134 set_option_value((char_u *)"fenc", 0L, b0_fenc, OPT_LOCAL); | |
1135 vim_free(b0_fenc); | |
1136 } | |
1137 unchanged(curbuf, TRUE); | |
1138 | |
7 | 1139 bnum = 1; /* start with block 1 */ |
1140 page_count = 1; /* which is 1 page */ | |
1141 lnum = 0; /* append after line 0 in curbuf */ | |
1142 line_count = 0; | |
1143 idx = 0; /* start with first index in block 1 */ | |
1144 error = 0; | |
1145 buf->b_ml.ml_stack_top = 0; | |
1146 buf->b_ml.ml_stack = NULL; | |
1147 buf->b_ml.ml_stack_size = 0; /* no stack yet */ | |
1148 | |
1149 if (curbuf->b_ffname == NULL) | |
1150 cannot_open = TRUE; | |
1151 else | |
1152 cannot_open = FALSE; | |
1153 | |
1154 serious_error = FALSE; | |
1155 for ( ; !got_int; line_breakcheck()) | |
1156 { | |
1157 if (hp != NULL) | |
1158 mf_put(mfp, hp, FALSE, FALSE); /* release previous block */ | |
1159 | |
1160 /* | |
1161 * get block | |
1162 */ | |
1163 if ((hp = mf_get(mfp, (blocknr_T)bnum, page_count)) == NULL) | |
1164 { | |
1165 if (bnum == 1) | |
1166 { | |
1167 EMSG2(_("E309: Unable to read block 1 from %s"), mfp->mf_fname); | |
1168 goto theend; | |
1169 } | |
1170 ++error; | |
1171 ml_append(lnum++, (char_u *)_("???MANY LINES MISSING"), | |
1172 (colnr_T)0, TRUE); | |
1173 } | |
1174 else /* there is a block */ | |
1175 { | |
1176 pp = (PTR_BL *)(hp->bh_data); | |
1177 if (pp->pb_id == PTR_ID) /* it is a pointer block */ | |
1178 { | |
1179 /* check line count when using pointer block first time */ | |
1180 if (idx == 0 && line_count != 0) | |
1181 { | |
1182 for (i = 0; i < (int)pp->pb_count; ++i) | |
1183 line_count -= pp->pb_pointer[i].pe_line_count; | |
1184 if (line_count != 0) | |
1185 { | |
1186 ++error; | |
1187 ml_append(lnum++, (char_u *)_("???LINE COUNT WRONG"), | |
1188 (colnr_T)0, TRUE); | |
1189 } | |
1190 } | |
1191 | |
1192 if (pp->pb_count == 0) | |
1193 { | |
1194 ml_append(lnum++, (char_u *)_("???EMPTY BLOCK"), | |
1195 (colnr_T)0, TRUE); | |
1196 ++error; | |
1197 } | |
1198 else if (idx < (int)pp->pb_count) /* go a block deeper */ | |
1199 { | |
1200 if (pp->pb_pointer[idx].pe_bnum < 0) | |
1201 { | |
1202 /* | |
1203 * Data block with negative block number. | |
1204 * Try to read lines from the original file. | |
1205 * This is slow, but it works. | |
1206 */ | |
1207 if (!cannot_open) | |
1208 { | |
1209 line_count = pp->pb_pointer[idx].pe_line_count; | |
1210 if (readfile(curbuf->b_ffname, NULL, lnum, | |
1211 pp->pb_pointer[idx].pe_old_lnum - 1, | |
1212 line_count, NULL, 0) == FAIL) | |
1213 cannot_open = TRUE; | |
1214 else | |
1215 lnum += line_count; | |
1216 } | |
1217 if (cannot_open) | |
1218 { | |
1219 ++error; | |
1220 ml_append(lnum++, (char_u *)_("???LINES MISSING"), | |
1221 (colnr_T)0, TRUE); | |
1222 } | |
1223 ++idx; /* get same block again for next index */ | |
1224 continue; | |
1225 } | |
1226 | |
1227 /* | |
1228 * going one block deeper in the tree | |
1229 */ | |
1230 if ((top = ml_add_stack(buf)) < 0) /* new entry in stack */ | |
1231 { | |
1232 ++error; | |
1233 break; /* out of memory */ | |
1234 } | |
1235 ip = &(buf->b_ml.ml_stack[top]); | |
1236 ip->ip_bnum = bnum; | |
1237 ip->ip_index = idx; | |
1238 | |
1239 bnum = pp->pb_pointer[idx].pe_bnum; | |
1240 line_count = pp->pb_pointer[idx].pe_line_count; | |
1241 page_count = pp->pb_pointer[idx].pe_page_count; | |
1242 continue; | |
1243 } | |
1244 } | |
1245 else /* not a pointer block */ | |
1246 { | |
1247 dp = (DATA_BL *)(hp->bh_data); | |
1248 if (dp->db_id != DATA_ID) /* block id wrong */ | |
1249 { | |
1250 if (bnum == 1) | |
1251 { | |
1252 EMSG2(_("E310: Block 1 ID wrong (%s not a .swp file?)"), | |
1253 mfp->mf_fname); | |
1254 goto theend; | |
1255 } | |
1256 ++error; | |
1257 ml_append(lnum++, (char_u *)_("???BLOCK MISSING"), | |
1258 (colnr_T)0, TRUE); | |
1259 } | |
1260 else | |
1261 { | |
1262 /* | |
1263 * it is a data block | |
1264 * Append all the lines in this block | |
1265 */ | |
1266 has_error = FALSE; | |
1267 /* | |
1268 * check length of block | |
1269 * if wrong, use length in pointer block | |
1270 */ | |
1271 if (page_count * mfp->mf_page_size != dp->db_txt_end) | |
1272 { | |
1273 ml_append(lnum++, (char_u *)_("??? from here until ???END lines may be messed up"), | |
1274 (colnr_T)0, TRUE); | |
1275 ++error; | |
1276 has_error = TRUE; | |
1277 dp->db_txt_end = page_count * mfp->mf_page_size; | |
1278 } | |
1279 | |
1280 /* make sure there is a NUL at the end of the block */ | |
1281 *((char_u *)dp + dp->db_txt_end - 1) = NUL; | |
1282 | |
1283 /* | |
1284 * check number of lines in block | |
1285 * if wrong, use count in data block | |
1286 */ | |
1287 if (line_count != dp->db_line_count) | |
1288 { | |
1289 ml_append(lnum++, (char_u *)_("??? from here until ???END lines may have been inserted/deleted"), | |
1290 (colnr_T)0, TRUE); | |
1291 ++error; | |
1292 has_error = TRUE; | |
1293 } | |
1294 | |
1295 for (i = 0; i < dp->db_line_count; ++i) | |
1296 { | |
1297 txt_start = (dp->db_index[i] & DB_INDEX_MASK); | |
1978 | 1298 if (txt_start <= (int)HEADER_SIZE |
7 | 1299 || txt_start >= (int)dp->db_txt_end) |
1300 { | |
1301 p = (char_u *)"???"; | |
1302 ++error; | |
1303 } | |
1304 else | |
1305 p = (char_u *)dp + txt_start; | |
1306 ml_append(lnum++, p, (colnr_T)0, TRUE); | |
1307 } | |
1308 if (has_error) | |
1978 | 1309 ml_append(lnum++, (char_u *)_("???END"), |
1310 (colnr_T)0, TRUE); | |
7 | 1311 } |
1312 } | |
1313 } | |
1314 | |
1315 if (buf->b_ml.ml_stack_top == 0) /* finished */ | |
1316 break; | |
1317 | |
1318 /* | |
1319 * go one block up in the tree | |
1320 */ | |
1321 ip = &(buf->b_ml.ml_stack[--(buf->b_ml.ml_stack_top)]); | |
1322 bnum = ip->ip_bnum; | |
1323 idx = ip->ip_index + 1; /* go to next index */ | |
1324 page_count = 1; | |
1325 } | |
1326 | |
1327 /* | |
1328 * The dummy line from the empty buffer will now be after the last line in | |
1329 * the buffer. Delete it. | |
1330 */ | |
1331 ml_delete(curbuf->b_ml.ml_line_count, FALSE); | |
1332 curbuf->b_flags |= BF_RECOVERED; | |
1333 | |
1334 recoverymode = FALSE; | |
1335 if (got_int) | |
1336 EMSG(_("E311: Recovery Interrupted")); | |
1337 else if (error) | |
1338 { | |
1339 ++no_wait_return; | |
1340 MSG(">>>>>>>>>>>>>"); | |
1341 EMSG(_("E312: Errors detected while recovering; look for lines starting with ???")); | |
1342 --no_wait_return; | |
1343 MSG(_("See \":help E312\" for more information.")); | |
1344 MSG(">>>>>>>>>>>>>"); | |
1345 } | |
1346 else | |
1347 { | |
1348 MSG(_("Recovery completed. You should check if everything is OK.")); | |
1349 MSG_PUTS(_("\n(You might want to write out this file under another name\n")); | |
1350 MSG_PUTS(_("and run diff with the original file to check for changes)\n")); | |
1351 MSG_PUTS(_("Delete the .swp file afterwards.\n\n")); | |
1352 cmdline_row = msg_row; | |
1353 } | |
1354 redraw_curbuf_later(NOT_VALID); | |
1355 | |
1356 theend: | |
1357 recoverymode = FALSE; | |
1358 if (mfp != NULL) | |
1359 { | |
1360 if (hp != NULL) | |
1361 mf_put(mfp, hp, FALSE, FALSE); | |
1362 mf_close(mfp, FALSE); /* will also vim_free(mfp->mf_fname) */ | |
1363 } | |
1053 | 1364 if (buf != NULL) |
1365 { | |
1366 vim_free(buf->b_ml.ml_stack); | |
1367 vim_free(buf); | |
1368 } | |
7 | 1369 if (serious_error && called_from_main) |
1370 ml_close(curbuf, TRUE); | |
1371 #ifdef FEAT_AUTOCMD | |
1372 else | |
1373 { | |
1374 apply_autocmds(EVENT_BUFREADPOST, NULL, curbuf->b_fname, FALSE, curbuf); | |
1375 apply_autocmds(EVENT_BUFWINENTER, NULL, curbuf->b_fname, FALSE, curbuf); | |
1376 } | |
1377 #endif | |
1378 return; | |
1379 } | |
1380 | |
1381 /* | |
1382 * Find the names of swap files in current directory and the directory given | |
1383 * with the 'directory' option. | |
1384 * | |
1385 * Used to: | |
1386 * - list the swap files for "vim -r" | |
1387 * - count the number of swap files when recovering | |
1388 * - list the swap files when recovering | |
1389 * - find the name of the n'th swap file when recovering | |
1390 */ | |
1391 int | |
1392 recover_names(fname, list, nr) | |
1393 char_u **fname; /* base for swap file name */ | |
1394 int list; /* when TRUE, list the swap file names */ | |
1395 int nr; /* when non-zero, return nr'th swap file name */ | |
1396 { | |
1397 int num_names; | |
1398 char_u *(names[6]); | |
1399 char_u *tail; | |
1400 char_u *p; | |
1401 int num_files; | |
1402 int file_count = 0; | |
1403 char_u **files; | |
1404 int i; | |
1405 char_u *dirp; | |
1406 char_u *dir_name; | |
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1407 char_u *fname_res = *fname; |
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1408 #ifdef HAVE_READLINK |
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1409 char_u fname_buf[MAXPATHL]; |
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1410 |
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1411 /* Expand symlink in the file name, because the swap file is created with |
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1412 * the actual file instead of with the symlink. */ |
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1413 if (resolve_symlink(*fname, fname_buf) == OK) |
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1414 fname_res = fname_buf; |
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1415 #endif |
7 | 1416 |
1417 if (list) | |
1418 { | |
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1419 /* use msg() to start the scrolling properly */ |
7 | 1420 msg((char_u *)_("Swap files found:")); |
1421 msg_putchar('\n'); | |
1422 } | |
1423 | |
1424 /* | |
1425 * Do the loop for every directory in 'directory'. | |
1426 * First allocate some memory to put the directory name in. | |
1427 */ | |
1428 dir_name = alloc((unsigned)STRLEN(p_dir) + 1); | |
1429 dirp = p_dir; | |
1430 while (dir_name != NULL && *dirp) | |
1431 { | |
1432 /* | |
1433 * Isolate a directory name from *dirp and put it in dir_name (we know | |
1434 * it is large enough, so use 31000 for length). | |
1435 * Advance dirp to next directory name. | |
1436 */ | |
1437 (void)copy_option_part(&dirp, dir_name, 31000, ","); | |
1438 | |
1439 if (dir_name[0] == '.' && dir_name[1] == NUL) /* check current dir */ | |
1440 { | |
1441 if (fname == NULL || *fname == NULL) | |
1442 { | |
1443 #ifdef VMS | |
1444 names[0] = vim_strsave((char_u *)"*_sw%"); | |
1445 #else | |
1446 # ifdef RISCOS | |
1447 names[0] = vim_strsave((char_u *)"*_sw#"); | |
1448 # else | |
1449 names[0] = vim_strsave((char_u *)"*.sw?"); | |
1450 # endif | |
1451 #endif | |
1005 | 1452 #if defined(UNIX) || defined(WIN3264) |
1453 /* For Unix names starting with a dot are special. MS-Windows | |
1454 * supports this too, on some file systems. */ | |
7 | 1455 names[1] = vim_strsave((char_u *)".*.sw?"); |
1456 names[2] = vim_strsave((char_u *)".sw?"); | |
1457 num_names = 3; | |
1458 #else | |
1459 # ifdef VMS | |
1460 names[1] = vim_strsave((char_u *)".*_sw%"); | |
1461 num_names = 2; | |
1462 # else | |
1463 num_names = 1; | |
1464 # endif | |
1465 #endif | |
1466 } | |
1467 else | |
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1468 num_names = recov_file_names(names, fname_res, TRUE); |
7 | 1469 } |
1470 else /* check directory dir_name */ | |
1471 { | |
1472 if (fname == NULL || *fname == NULL) | |
1473 { | |
1474 #ifdef VMS | |
1475 names[0] = concat_fnames(dir_name, (char_u *)"*_sw%", TRUE); | |
1476 #else | |
1477 # ifdef RISCOS | |
1478 names[0] = concat_fnames(dir_name, (char_u *)"*_sw#", TRUE); | |
1479 # else | |
1480 names[0] = concat_fnames(dir_name, (char_u *)"*.sw?", TRUE); | |
1481 # endif | |
1482 #endif | |
1005 | 1483 #if defined(UNIX) || defined(WIN3264) |
1484 /* For Unix names starting with a dot are special. MS-Windows | |
1485 * supports this too, on some file systems. */ | |
7 | 1486 names[1] = concat_fnames(dir_name, (char_u *)".*.sw?", TRUE); |
1487 names[2] = concat_fnames(dir_name, (char_u *)".sw?", TRUE); | |
1488 num_names = 3; | |
1489 #else | |
1490 # ifdef VMS | |
1491 names[1] = concat_fnames(dir_name, (char_u *)".*_sw%", TRUE); | |
1492 num_names = 2; | |
1493 # else | |
1494 num_names = 1; | |
1495 # endif | |
1496 #endif | |
1497 } | |
1498 else | |
1499 { | |
1500 #if defined(UNIX) || defined(WIN3264) | |
1501 p = dir_name + STRLEN(dir_name); | |
39 | 1502 if (after_pathsep(dir_name, p) && p[-1] == p[-2]) |
7 | 1503 { |
1504 /* Ends with '//', Use Full path for swap name */ | |
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1505 tail = make_percent_swname(dir_name, fname_res); |
7 | 1506 } |
1507 else | |
1508 #endif | |
1509 { | |
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1510 tail = gettail(fname_res); |
7 | 1511 tail = concat_fnames(dir_name, tail, TRUE); |
1512 } | |
1513 if (tail == NULL) | |
1514 num_names = 0; | |
1515 else | |
1516 { | |
1517 num_names = recov_file_names(names, tail, FALSE); | |
1518 vim_free(tail); | |
1519 } | |
1520 } | |
1521 } | |
1522 | |
1523 /* check for out-of-memory */ | |
1524 for (i = 0; i < num_names; ++i) | |
1525 { | |
1526 if (names[i] == NULL) | |
1527 { | |
1528 for (i = 0; i < num_names; ++i) | |
1529 vim_free(names[i]); | |
1530 num_names = 0; | |
1531 } | |
1532 } | |
1533 if (num_names == 0) | |
1534 num_files = 0; | |
1535 else if (expand_wildcards(num_names, names, &num_files, &files, | |
1536 EW_KEEPALL|EW_FILE|EW_SILENT) == FAIL) | |
1537 num_files = 0; | |
1538 | |
1539 /* | |
1540 * When no swap file found, wildcard expansion might have failed (e.g. | |
1541 * not able to execute the shell). | |
1542 * Try finding a swap file by simply adding ".swp" to the file name. | |
1543 */ | |
1544 if (*dirp == NUL && file_count + num_files == 0 | |
1545 && fname != NULL && *fname != NULL) | |
1546 { | |
1547 struct stat st; | |
1548 char_u *swapname; | |
1549 | |
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1550 swapname = modname(fname_res, |
7 | 1551 #if defined(VMS) || defined(RISCOS) |
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1552 (char_u *)"_swp", FALSE |
7 | 1553 #else |
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1554 (char_u *)".swp", TRUE |
7 | 1555 #endif |
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1556 ); |
7 | 1557 if (swapname != NULL) |
1558 { | |
1559 if (mch_stat((char *)swapname, &st) != -1) /* It exists! */ | |
1560 { | |
1561 files = (char_u **)alloc((unsigned)sizeof(char_u *)); | |
1562 if (files != NULL) | |
1563 { | |
1564 files[0] = swapname; | |
1565 swapname = NULL; | |
1566 num_files = 1; | |
1567 } | |
1568 } | |
1569 vim_free(swapname); | |
1570 } | |
1571 } | |
1572 | |
1573 /* | |
1574 * remove swapfile name of the current buffer, it must be ignored | |
1575 */ | |
1576 if (curbuf->b_ml.ml_mfp != NULL | |
1577 && (p = curbuf->b_ml.ml_mfp->mf_fname) != NULL) | |
1578 { | |
1579 for (i = 0; i < num_files; ++i) | |
1580 if (fullpathcmp(p, files[i], TRUE) & FPC_SAME) | |
1581 { | |
1855 | 1582 /* Remove the name from files[i]. Move further entries |
1583 * down. When the array becomes empty free it here, since | |
1584 * FreeWild() won't be called below. */ | |
7 | 1585 vim_free(files[i]); |
1855 | 1586 if (--num_files == 0) |
1587 vim_free(files); | |
1588 else | |
1589 for ( ; i < num_files; ++i) | |
1590 files[i] = files[i + 1]; | |
7 | 1591 } |
1592 } | |
838 | 1593 if (nr > 0) |
7 | 1594 { |
1595 file_count += num_files; | |
1596 if (nr <= file_count) | |
1597 { | |
1598 *fname = vim_strsave(files[nr - 1 + num_files - file_count]); | |
1599 dirp = (char_u *)""; /* stop searching */ | |
1600 } | |
1601 } | |
1602 else if (list) | |
1603 { | |
1604 if (dir_name[0] == '.' && dir_name[1] == NUL) | |
1605 { | |
1606 if (fname == NULL || *fname == NULL) | |
1607 MSG_PUTS(_(" In current directory:\n")); | |
1608 else | |
1609 MSG_PUTS(_(" Using specified name:\n")); | |
1610 } | |
1611 else | |
1612 { | |
1613 MSG_PUTS(_(" In directory ")); | |
1614 msg_home_replace(dir_name); | |
1615 MSG_PUTS(":\n"); | |
1616 } | |
1617 | |
1618 if (num_files) | |
1619 { | |
1620 for (i = 0; i < num_files; ++i) | |
1621 { | |
1622 /* print the swap file name */ | |
1623 msg_outnum((long)++file_count); | |
1624 MSG_PUTS(". "); | |
1625 msg_puts(gettail(files[i])); | |
1626 msg_putchar('\n'); | |
1627 (void)swapfile_info(files[i]); | |
1628 } | |
1629 } | |
1630 else | |
1631 MSG_PUTS(_(" -- none --\n")); | |
1632 out_flush(); | |
1633 } | |
1634 else | |
1635 file_count += num_files; | |
1636 | |
1637 for (i = 0; i < num_names; ++i) | |
1638 vim_free(names[i]); | |
838 | 1639 if (num_files > 0) |
1640 FreeWild(num_files, files); | |
7 | 1641 } |
1642 vim_free(dir_name); | |
1643 return file_count; | |
1644 } | |
1645 | |
1646 #if defined(UNIX) || defined(WIN3264) /* Need _very_ long file names */ | |
1647 /* | |
1648 * Append the full path to name with path separators made into percent | |
1649 * signs, to dir. An unnamed buffer is handled as "" (<currentdir>/"") | |
1650 */ | |
1651 static char_u * | |
1652 make_percent_swname(dir, name) | |
1653 char_u *dir; | |
1654 char_u *name; | |
1655 { | |
39 | 1656 char_u *d, *s, *f; |
7 | 1657 |
1658 f = fix_fname(name != NULL ? name : (char_u *) ""); | |
1659 d = NULL; | |
1660 if (f != NULL) | |
1661 { | |
1662 s = alloc((unsigned)(STRLEN(f) + 1)); | |
1663 if (s != NULL) | |
1664 { | |
39 | 1665 STRCPY(s, f); |
1666 for (d = s; *d != NUL; mb_ptr_adv(d)) | |
1667 if (vim_ispathsep(*d)) | |
1668 *d = '%'; | |
7 | 1669 d = concat_fnames(dir, s, TRUE); |
1670 vim_free(s); | |
1671 } | |
1672 vim_free(f); | |
1673 } | |
1674 return d; | |
1675 } | |
1676 #endif | |
1677 | |
1678 #if (defined(UNIX) || defined(__EMX__) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)) | |
1679 static int process_still_running; | |
1680 #endif | |
1681 | |
1682 /* | |
580 | 1683 * Give information about an existing swap file. |
7 | 1684 * Returns timestamp (0 when unknown). |
1685 */ | |
1686 static time_t | |
1687 swapfile_info(fname) | |
1688 char_u *fname; | |
1689 { | |
1690 struct stat st; | |
1691 int fd; | |
1692 struct block0 b0; | |
1693 time_t x = (time_t)0; | |
1001 | 1694 char *p; |
7 | 1695 #ifdef UNIX |
1696 char_u uname[B0_UNAME_SIZE]; | |
1697 #endif | |
1698 | |
1699 /* print the swap file date */ | |
1700 if (mch_stat((char *)fname, &st) != -1) | |
1701 { | |
1702 #ifdef UNIX | |
1703 /* print name of owner of the file */ | |
1704 if (mch_get_uname(st.st_uid, uname, B0_UNAME_SIZE) == OK) | |
1705 { | |
1706 MSG_PUTS(_(" owned by: ")); | |
1707 msg_outtrans(uname); | |
1708 MSG_PUTS(_(" dated: ")); | |
1709 } | |
1710 else | |
1711 #endif | |
1712 MSG_PUTS(_(" dated: ")); | |
1713 x = st.st_mtime; /* Manx C can't do &st.st_mtime */ | |
1001 | 1714 p = ctime(&x); /* includes '\n' */ |
1715 if (p == NULL) | |
1716 MSG_PUTS("(invalid)\n"); | |
1717 else | |
1718 MSG_PUTS(p); | |
7 | 1719 } |
1720 | |
1721 /* | |
1722 * print the original file name | |
1723 */ | |
1724 fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
1725 if (fd >= 0) | |
1726 { | |
1727 if (read(fd, (char *)&b0, sizeof(b0)) == sizeof(b0)) | |
1728 { | |
1729 if (STRNCMP(b0.b0_version, "VIM 3.0", 7) == 0) | |
1730 { | |
1731 MSG_PUTS(_(" [from Vim version 3.0]")); | |
1732 } | |
1733 else if (b0.b0_id[0] != BLOCK0_ID0 || b0.b0_id[1] != BLOCK0_ID1) | |
1734 { | |
1735 MSG_PUTS(_(" [does not look like a Vim swap file]")); | |
1736 } | |
1737 else | |
1738 { | |
1739 MSG_PUTS(_(" file name: ")); | |
1740 if (b0.b0_fname[0] == NUL) | |
9 | 1741 MSG_PUTS(_("[No Name]")); |
7 | 1742 else |
1743 msg_outtrans(b0.b0_fname); | |
1744 | |
1745 MSG_PUTS(_("\n modified: ")); | |
1746 MSG_PUTS(b0.b0_dirty ? _("YES") : _("no")); | |
1747 | |
1748 if (*(b0.b0_uname) != NUL) | |
1749 { | |
1750 MSG_PUTS(_("\n user name: ")); | |
1751 msg_outtrans(b0.b0_uname); | |
1752 } | |
1753 | |
1754 if (*(b0.b0_hname) != NUL) | |
1755 { | |
1756 if (*(b0.b0_uname) != NUL) | |
1757 MSG_PUTS(_(" host name: ")); | |
1758 else | |
1759 MSG_PUTS(_("\n host name: ")); | |
1760 msg_outtrans(b0.b0_hname); | |
1761 } | |
1762 | |
1763 if (char_to_long(b0.b0_pid) != 0L) | |
1764 { | |
1765 MSG_PUTS(_("\n process ID: ")); | |
1766 msg_outnum(char_to_long(b0.b0_pid)); | |
1767 #if defined(UNIX) || defined(__EMX__) | |
1768 /* EMX kill() not working correctly, it seems */ | |
1769 if (kill((pid_t)char_to_long(b0.b0_pid), 0) == 0) | |
1770 { | |
1771 MSG_PUTS(_(" (still running)")); | |
1772 # if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) | |
1773 process_still_running = TRUE; | |
1774 # endif | |
1775 } | |
1776 #endif | |
1777 } | |
1778 | |
1779 if (b0_magic_wrong(&b0)) | |
1780 { | |
1781 #if defined(MSDOS) || defined(MSWIN) | |
1782 if (STRNCMP(b0.b0_hname, "PC ", 3) == 0) | |
1783 MSG_PUTS(_("\n [not usable with this version of Vim]")); | |
1784 else | |
1785 #endif | |
1786 MSG_PUTS(_("\n [not usable on this computer]")); | |
1787 } | |
1788 } | |
1789 } | |
1790 else | |
1791 MSG_PUTS(_(" [cannot be read]")); | |
1792 close(fd); | |
1793 } | |
1794 else | |
1795 MSG_PUTS(_(" [cannot be opened]")); | |
1796 msg_putchar('\n'); | |
1797 | |
1798 return x; | |
1799 } | |
1800 | |
1801 static int | |
1802 recov_file_names(names, path, prepend_dot) | |
1803 char_u **names; | |
1804 char_u *path; | |
1805 int prepend_dot; | |
1806 { | |
1807 int num_names; | |
1808 | |
1809 #ifdef SHORT_FNAME | |
1810 /* | |
1811 * (MS-DOS) always short names | |
1812 */ | |
1813 names[0] = modname(path, (char_u *)".sw?", FALSE); | |
1814 num_names = 1; | |
1815 #else /* !SHORT_FNAME */ | |
1816 /* | |
1817 * (Win32 and Win64) never short names, but do prepend a dot. | |
1818 * (Not MS-DOS or Win32 or Win64) maybe short name, maybe not: Try both. | |
1819 * Only use the short name if it is different. | |
1820 */ | |
1821 char_u *p; | |
1822 int i; | |
1823 # ifndef WIN3264 | |
1824 int shortname = curbuf->b_shortname; | |
1825 | |
1826 curbuf->b_shortname = FALSE; | |
1827 # endif | |
1828 | |
1829 num_names = 0; | |
1830 | |
1831 /* | |
1832 * May also add the file name with a dot prepended, for swap file in same | |
1833 * dir as original file. | |
1834 */ | |
1835 if (prepend_dot) | |
1836 { | |
1837 names[num_names] = modname(path, (char_u *)".sw?", TRUE); | |
1838 if (names[num_names] == NULL) | |
1839 goto end; | |
1840 ++num_names; | |
1841 } | |
1842 | |
1843 /* | |
1844 * Form the normal swap file name pattern by appending ".sw?". | |
1845 */ | |
1846 #ifdef VMS | |
1847 names[num_names] = concat_fnames(path, (char_u *)"_sw%", FALSE); | |
1848 #else | |
1849 # ifdef RISCOS | |
1850 names[num_names] = concat_fnames(path, (char_u *)"_sw#", FALSE); | |
1851 # else | |
1852 names[num_names] = concat_fnames(path, (char_u *)".sw?", FALSE); | |
1853 # endif | |
1854 #endif | |
1855 if (names[num_names] == NULL) | |
1856 goto end; | |
1857 if (num_names >= 1) /* check if we have the same name twice */ | |
1858 { | |
1859 p = names[num_names - 1]; | |
1860 i = (int)STRLEN(names[num_names - 1]) - (int)STRLEN(names[num_names]); | |
1861 if (i > 0) | |
1862 p += i; /* file name has been expanded to full path */ | |
1863 | |
1864 if (STRCMP(p, names[num_names]) != 0) | |
1865 ++num_names; | |
1866 else | |
1867 vim_free(names[num_names]); | |
1868 } | |
1869 else | |
1870 ++num_names; | |
1871 | |
1872 # ifndef WIN3264 | |
1873 /* | |
1874 * Also try with 'shortname' set, in case the file is on a DOS filesystem. | |
1875 */ | |
1876 curbuf->b_shortname = TRUE; | |
1877 #ifdef VMS | |
1878 names[num_names] = modname(path, (char_u *)"_sw%", FALSE); | |
1879 #else | |
1880 # ifdef RISCOS | |
1881 names[num_names] = modname(path, (char_u *)"_sw#", FALSE); | |
1882 # else | |
1883 names[num_names] = modname(path, (char_u *)".sw?", FALSE); | |
1884 # endif | |
1885 #endif | |
1886 if (names[num_names] == NULL) | |
1887 goto end; | |
1888 | |
1889 /* | |
1890 * Remove the one from 'shortname', if it's the same as with 'noshortname'. | |
1891 */ | |
1892 p = names[num_names]; | |
1893 i = STRLEN(names[num_names]) - STRLEN(names[num_names - 1]); | |
1894 if (i > 0) | |
1895 p += i; /* file name has been expanded to full path */ | |
1896 if (STRCMP(names[num_names - 1], p) == 0) | |
1897 vim_free(names[num_names]); | |
1898 else | |
1899 ++num_names; | |
1900 # endif | |
1901 | |
1902 end: | |
1903 # ifndef WIN3264 | |
1904 curbuf->b_shortname = shortname; | |
1905 # endif | |
1906 | |
1907 #endif /* !SHORT_FNAME */ | |
1908 | |
1909 return num_names; | |
1910 } | |
1911 | |
1912 /* | |
1913 * sync all memlines | |
1914 * | |
1915 * If 'check_file' is TRUE, check if original file exists and was not changed. | |
1916 * If 'check_char' is TRUE, stop syncing when character becomes available, but | |
1917 * always sync at least one block. | |
1918 */ | |
1919 void | |
1920 ml_sync_all(check_file, check_char) | |
1921 int check_file; | |
1922 int check_char; | |
1923 { | |
1924 buf_T *buf; | |
1925 struct stat st; | |
1926 | |
1927 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
1928 { | |
1929 if (buf->b_ml.ml_mfp == NULL || buf->b_ml.ml_mfp->mf_fname == NULL) | |
1930 continue; /* no file */ | |
1931 | |
1932 ml_flush_line(buf); /* flush buffered line */ | |
1933 /* flush locked block */ | |
1934 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); | |
1935 if (bufIsChanged(buf) && check_file && mf_need_trans(buf->b_ml.ml_mfp) | |
1936 && buf->b_ffname != NULL) | |
1937 { | |
1938 /* | |
1939 * If the original file does not exist anymore or has been changed | |
1940 * call ml_preserve() to get rid of all negative numbered blocks. | |
1941 */ | |
1942 if (mch_stat((char *)buf->b_ffname, &st) == -1 | |
1943 || st.st_mtime != buf->b_mtime_read | |
1944 || (size_t)st.st_size != buf->b_orig_size) | |
1945 { | |
1946 ml_preserve(buf, FALSE); | |
1947 did_check_timestamps = FALSE; | |
1948 need_check_timestamps = TRUE; /* give message later */ | |
1949 } | |
1950 } | |
1951 if (buf->b_ml.ml_mfp->mf_dirty) | |
1952 { | |
1953 (void)mf_sync(buf->b_ml.ml_mfp, (check_char ? MFS_STOP : 0) | |
1954 | (bufIsChanged(buf) ? MFS_FLUSH : 0)); | |
1955 if (check_char && ui_char_avail()) /* character available now */ | |
1956 break; | |
1957 } | |
1958 } | |
1959 } | |
1960 | |
1961 /* | |
1962 * sync one buffer, including negative blocks | |
1963 * | |
1964 * after this all the blocks are in the swap file | |
1965 * | |
1966 * Used for the :preserve command and when the original file has been | |
1967 * changed or deleted. | |
1968 * | |
1969 * when message is TRUE the success of preserving is reported | |
1970 */ | |
1971 void | |
1972 ml_preserve(buf, message) | |
1973 buf_T *buf; | |
1974 int message; | |
1975 { | |
1976 bhdr_T *hp; | |
1977 linenr_T lnum; | |
1978 memfile_T *mfp = buf->b_ml.ml_mfp; | |
1979 int status; | |
1980 int got_int_save = got_int; | |
1981 | |
1982 if (mfp == NULL || mfp->mf_fname == NULL) | |
1983 { | |
1984 if (message) | |
1985 EMSG(_("E313: Cannot preserve, there is no swap file")); | |
1986 return; | |
1987 } | |
1988 | |
1989 /* We only want to stop when interrupted here, not when interrupted | |
1990 * before. */ | |
1991 got_int = FALSE; | |
1992 | |
1993 ml_flush_line(buf); /* flush buffered line */ | |
1994 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
1995 status = mf_sync(mfp, MFS_ALL | MFS_FLUSH); | |
1996 | |
1997 /* stack is invalid after mf_sync(.., MFS_ALL) */ | |
1998 buf->b_ml.ml_stack_top = 0; | |
1999 | |
2000 /* | |
2001 * Some of the data blocks may have been changed from negative to | |
2002 * positive block number. In that case the pointer blocks need to be | |
2003 * updated. | |
2004 * | |
2005 * We don't know in which pointer block the references are, so we visit | |
2006 * all data blocks until there are no more translations to be done (or | |
2007 * we hit the end of the file, which can only happen in case a write fails, | |
2008 * e.g. when file system if full). | |
2009 * ml_find_line() does the work by translating the negative block numbers | |
2010 * when getting the first line of each data block. | |
2011 */ | |
2012 if (mf_need_trans(mfp) && !got_int) | |
2013 { | |
2014 lnum = 1; | |
2015 while (mf_need_trans(mfp) && lnum <= buf->b_ml.ml_line_count) | |
2016 { | |
2017 hp = ml_find_line(buf, lnum, ML_FIND); | |
2018 if (hp == NULL) | |
2019 { | |
2020 status = FAIL; | |
2021 goto theend; | |
2022 } | |
2023 CHECK(buf->b_ml.ml_locked_low != lnum, "low != lnum"); | |
2024 lnum = buf->b_ml.ml_locked_high + 1; | |
2025 } | |
2026 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
2027 /* sync the updated pointer blocks */ | |
2028 if (mf_sync(mfp, MFS_ALL | MFS_FLUSH) == FAIL) | |
2029 status = FAIL; | |
2030 buf->b_ml.ml_stack_top = 0; /* stack is invalid now */ | |
2031 } | |
2032 theend: | |
2033 got_int |= got_int_save; | |
2034 | |
2035 if (message) | |
2036 { | |
2037 if (status == OK) | |
2038 MSG(_("File preserved")); | |
2039 else | |
2040 EMSG(_("E314: Preserve failed")); | |
2041 } | |
2042 } | |
2043 | |
2044 /* | |
2045 * NOTE: The pointer returned by the ml_get_*() functions only remains valid | |
2046 * until the next call! | |
2047 * line1 = ml_get(1); | |
2048 * line2 = ml_get(2); // line1 is now invalid! | |
2049 * Make a copy of the line if necessary. | |
2050 */ | |
2051 /* | |
2052 * get a pointer to a (read-only copy of a) line | |
2053 * | |
2054 * On failure an error message is given and IObuff is returned (to avoid | |
2055 * having to check for error everywhere). | |
2056 */ | |
2057 char_u * | |
2058 ml_get(lnum) | |
2059 linenr_T lnum; | |
2060 { | |
2061 return ml_get_buf(curbuf, lnum, FALSE); | |
2062 } | |
2063 | |
2064 /* | |
2065 * ml_get_pos: get pointer to position 'pos' | |
2066 */ | |
2067 char_u * | |
2068 ml_get_pos(pos) | |
2069 pos_T *pos; | |
2070 { | |
2071 return (ml_get_buf(curbuf, pos->lnum, FALSE) + pos->col); | |
2072 } | |
2073 | |
2074 /* | |
2075 * ml_get_curline: get pointer to cursor line. | |
2076 */ | |
2077 char_u * | |
2078 ml_get_curline() | |
2079 { | |
2080 return ml_get_buf(curbuf, curwin->w_cursor.lnum, FALSE); | |
2081 } | |
2082 | |
2083 /* | |
2084 * ml_get_cursor: get pointer to cursor position | |
2085 */ | |
2086 char_u * | |
2087 ml_get_cursor() | |
2088 { | |
2089 return (ml_get_buf(curbuf, curwin->w_cursor.lnum, FALSE) + | |
2090 curwin->w_cursor.col); | |
2091 } | |
2092 | |
2093 /* | |
2094 * get a pointer to a line in a specific buffer | |
2095 * | |
2096 * "will_change": if TRUE mark the buffer dirty (chars in the line will be | |
2097 * changed) | |
2098 */ | |
2099 char_u * | |
2100 ml_get_buf(buf, lnum, will_change) | |
2101 buf_T *buf; | |
2102 linenr_T lnum; | |
2103 int will_change; /* line will be changed */ | |
2104 { | |
1068 | 2105 bhdr_T *hp; |
2106 DATA_BL *dp; | |
2107 char_u *ptr; | |
2108 static int recursive = 0; | |
7 | 2109 |
2110 if (lnum > buf->b_ml.ml_line_count) /* invalid line number */ | |
2111 { | |
1068 | 2112 if (recursive == 0) |
2113 { | |
2114 /* Avoid giving this message for a recursive call, may happen when | |
2115 * the GUI redraws part of the text. */ | |
2116 ++recursive; | |
2117 EMSGN(_("E315: ml_get: invalid lnum: %ld"), lnum); | |
2118 --recursive; | |
2119 } | |
7 | 2120 errorret: |
2121 STRCPY(IObuff, "???"); | |
2122 return IObuff; | |
2123 } | |
2124 if (lnum <= 0) /* pretend line 0 is line 1 */ | |
2125 lnum = 1; | |
2126 | |
2127 if (buf->b_ml.ml_mfp == NULL) /* there are no lines */ | |
2128 return (char_u *)""; | |
2129 | |
2108
3cdf2a653e00
updated for version 7.2.391
Bram Moolenaar <bram@zimbu.org>
parents:
2075
diff
changeset
|
2130 /* |
3cdf2a653e00
updated for version 7.2.391
Bram Moolenaar <bram@zimbu.org>
parents:
2075
diff
changeset
|
2131 * See if it is the same line as requested last time. |
3cdf2a653e00
updated for version 7.2.391
Bram Moolenaar <bram@zimbu.org>
parents:
2075
diff
changeset
|
2132 * Otherwise may need to flush last used line. |
3cdf2a653e00
updated for version 7.2.391
Bram Moolenaar <bram@zimbu.org>
parents:
2075
diff
changeset
|
2133 * Don't use the last used line when 'swapfile' is reset, need to load all |
3cdf2a653e00
updated for version 7.2.391
Bram Moolenaar <bram@zimbu.org>
parents:
2075
diff
changeset
|
2134 * blocks. |
3cdf2a653e00
updated for version 7.2.391
Bram Moolenaar <bram@zimbu.org>
parents:
2075
diff
changeset
|
2135 */ |
1066 | 2136 if (buf->b_ml.ml_line_lnum != lnum || mf_dont_release) |
7 | 2137 { |
2138 ml_flush_line(buf); | |
2139 | |
2140 /* | |
2141 * Find the data block containing the line. | |
2142 * This also fills the stack with the blocks from the root to the data | |
2143 * block and releases any locked block. | |
2144 */ | |
2145 if ((hp = ml_find_line(buf, lnum, ML_FIND)) == NULL) | |
2146 { | |
1068 | 2147 if (recursive == 0) |
2148 { | |
2149 /* Avoid giving this message for a recursive call, may happen | |
2150 * when the GUI redraws part of the text. */ | |
2151 ++recursive; | |
2152 EMSGN(_("E316: ml_get: cannot find line %ld"), lnum); | |
2153 --recursive; | |
2154 } | |
7 | 2155 goto errorret; |
2156 } | |
2157 | |
2158 dp = (DATA_BL *)(hp->bh_data); | |
2159 | |
2160 ptr = (char_u *)dp + ((dp->db_index[lnum - buf->b_ml.ml_locked_low]) & DB_INDEX_MASK); | |
2161 buf->b_ml.ml_line_ptr = ptr; | |
2162 buf->b_ml.ml_line_lnum = lnum; | |
2163 buf->b_ml.ml_flags &= ~ML_LINE_DIRTY; | |
2164 } | |
2165 if (will_change) | |
2166 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
2167 | |
2168 return buf->b_ml.ml_line_ptr; | |
2169 } | |
2170 | |
2171 /* | |
2172 * Check if a line that was just obtained by a call to ml_get | |
2173 * is in allocated memory. | |
2174 */ | |
2175 int | |
2176 ml_line_alloced() | |
2177 { | |
2178 return (curbuf->b_ml.ml_flags & ML_LINE_DIRTY); | |
2179 } | |
2180 | |
2181 /* | |
2182 * Append a line after lnum (may be 0 to insert a line in front of the file). | |
2183 * "line" does not need to be allocated, but can't be another line in a | |
2184 * buffer, unlocking may make it invalid. | |
2185 * | |
2186 * newfile: TRUE when starting to edit a new file, meaning that pe_old_lnum | |
2187 * will be set for recovery | |
2188 * Check: The caller of this function should probably also call | |
2189 * appended_lines(). | |
2190 * | |
2191 * return FAIL for failure, OK otherwise | |
2192 */ | |
2193 int | |
2194 ml_append(lnum, line, len, newfile) | |
2195 linenr_T lnum; /* append after this line (can be 0) */ | |
2196 char_u *line; /* text of the new line */ | |
2197 colnr_T len; /* length of new line, including NUL, or 0 */ | |
2198 int newfile; /* flag, see above */ | |
2199 { | |
2200 /* When starting up, we might still need to create the memfile */ | |
2201 if (curbuf->b_ml.ml_mfp == NULL && open_buffer(FALSE, NULL) == FAIL) | |
2202 return FAIL; | |
2203 | |
2204 if (curbuf->b_ml.ml_line_lnum != 0) | |
2205 ml_flush_line(curbuf); | |
2206 return ml_append_int(curbuf, lnum, line, len, newfile, FALSE); | |
2207 } | |
2208 | |
748 | 2209 #if defined(FEAT_SPELL) || defined(PROTO) |
625 | 2210 /* |
2211 * Like ml_append() but for an arbitrary buffer. The buffer must already have | |
2212 * a memline. | |
2213 */ | |
2214 int | |
2215 ml_append_buf(buf, lnum, line, len, newfile) | |
2216 buf_T *buf; | |
2217 linenr_T lnum; /* append after this line (can be 0) */ | |
2218 char_u *line; /* text of the new line */ | |
2219 colnr_T len; /* length of new line, including NUL, or 0 */ | |
2220 int newfile; /* flag, see above */ | |
2221 { | |
2222 if (buf->b_ml.ml_mfp == NULL) | |
2223 return FAIL; | |
2224 | |
2225 if (buf->b_ml.ml_line_lnum != 0) | |
2226 ml_flush_line(buf); | |
2227 return ml_append_int(buf, lnum, line, len, newfile, FALSE); | |
2228 } | |
2229 #endif | |
2230 | |
7 | 2231 static int |
2232 ml_append_int(buf, lnum, line, len, newfile, mark) | |
2233 buf_T *buf; | |
2234 linenr_T lnum; /* append after this line (can be 0) */ | |
2235 char_u *line; /* text of the new line */ | |
2236 colnr_T len; /* length of line, including NUL, or 0 */ | |
2237 int newfile; /* flag, see above */ | |
2238 int mark; /* mark the new line */ | |
2239 { | |
2240 int i; | |
2241 int line_count; /* number of indexes in current block */ | |
2242 int offset; | |
2243 int from, to; | |
2244 int space_needed; /* space needed for new line */ | |
2245 int page_size; | |
2246 int page_count; | |
2247 int db_idx; /* index for lnum in data block */ | |
2248 bhdr_T *hp; | |
2249 memfile_T *mfp; | |
2250 DATA_BL *dp; | |
2251 PTR_BL *pp; | |
2252 infoptr_T *ip; | |
2253 | |
2254 /* lnum out of range */ | |
2255 if (lnum > buf->b_ml.ml_line_count || buf->b_ml.ml_mfp == NULL) | |
2256 return FAIL; | |
2257 | |
2258 if (lowest_marked && lowest_marked > lnum) | |
2259 lowest_marked = lnum + 1; | |
2260 | |
2261 if (len == 0) | |
2262 len = (colnr_T)STRLEN(line) + 1; /* space needed for the text */ | |
2263 space_needed = len + INDEX_SIZE; /* space needed for text + index */ | |
2264 | |
2265 mfp = buf->b_ml.ml_mfp; | |
2266 page_size = mfp->mf_page_size; | |
2267 | |
2268 /* | |
2269 * find the data block containing the previous line | |
2270 * This also fills the stack with the blocks from the root to the data block | |
2271 * This also releases any locked block. | |
2272 */ | |
2273 if ((hp = ml_find_line(buf, lnum == 0 ? (linenr_T)1 : lnum, | |
2274 ML_INSERT)) == NULL) | |
2275 return FAIL; | |
2276 | |
2277 buf->b_ml.ml_flags &= ~ML_EMPTY; | |
2278 | |
2279 if (lnum == 0) /* got line one instead, correct db_idx */ | |
2280 db_idx = -1; /* careful, it is negative! */ | |
2281 else | |
2282 db_idx = lnum - buf->b_ml.ml_locked_low; | |
2283 /* get line count before the insertion */ | |
2284 line_count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low; | |
2285 | |
2286 dp = (DATA_BL *)(hp->bh_data); | |
2287 | |
2288 /* | |
2289 * If | |
2290 * - there is not enough room in the current block | |
2291 * - appending to the last line in the block | |
2292 * - not appending to the last line in the file | |
2293 * insert in front of the next block. | |
2294 */ | |
2295 if ((int)dp->db_free < space_needed && db_idx == line_count - 1 | |
2296 && lnum < buf->b_ml.ml_line_count) | |
2297 { | |
2298 /* | |
2299 * Now that the line is not going to be inserted in the block that we | |
2300 * expected, the line count has to be adjusted in the pointer blocks | |
2301 * by using ml_locked_lineadd. | |
2302 */ | |
2303 --(buf->b_ml.ml_locked_lineadd); | |
2304 --(buf->b_ml.ml_locked_high); | |
2305 if ((hp = ml_find_line(buf, lnum + 1, ML_INSERT)) == NULL) | |
2306 return FAIL; | |
2307 | |
2308 db_idx = -1; /* careful, it is negative! */ | |
2309 /* get line count before the insertion */ | |
2310 line_count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low; | |
2311 CHECK(buf->b_ml.ml_locked_low != lnum + 1, "locked_low != lnum + 1"); | |
2312 | |
2313 dp = (DATA_BL *)(hp->bh_data); | |
2314 } | |
2315 | |
2316 ++buf->b_ml.ml_line_count; | |
2317 | |
2318 if ((int)dp->db_free >= space_needed) /* enough room in data block */ | |
2319 { | |
2320 /* | |
2321 * Insert new line in existing data block, or in data block allocated above. | |
2322 */ | |
2323 dp->db_txt_start -= len; | |
2324 dp->db_free -= space_needed; | |
2325 ++(dp->db_line_count); | |
2326 | |
2327 /* | |
2328 * move the text of the lines that follow to the front | |
2329 * adjust the indexes of the lines that follow | |
2330 */ | |
2331 if (line_count > db_idx + 1) /* if there are following lines */ | |
2332 { | |
2333 /* | |
2334 * Offset is the start of the previous line. | |
2335 * This will become the character just after the new line. | |
2336 */ | |
2337 if (db_idx < 0) | |
2338 offset = dp->db_txt_end; | |
2339 else | |
2340 offset = ((dp->db_index[db_idx]) & DB_INDEX_MASK); | |
2341 mch_memmove((char *)dp + dp->db_txt_start, | |
2342 (char *)dp + dp->db_txt_start + len, | |
2343 (size_t)(offset - (dp->db_txt_start + len))); | |
2344 for (i = line_count - 1; i > db_idx; --i) | |
2345 dp->db_index[i + 1] = dp->db_index[i] - len; | |
2346 dp->db_index[db_idx + 1] = offset - len; | |
2347 } | |
2348 else /* add line at the end */ | |
2349 dp->db_index[db_idx + 1] = dp->db_txt_start; | |
2350 | |
2351 /* | |
2352 * copy the text into the block | |
2353 */ | |
2354 mch_memmove((char *)dp + dp->db_index[db_idx + 1], line, (size_t)len); | |
2355 if (mark) | |
2356 dp->db_index[db_idx + 1] |= DB_MARKED; | |
2357 | |
2358 /* | |
2359 * Mark the block dirty. | |
2360 */ | |
2361 buf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
2362 if (!newfile) | |
2363 buf->b_ml.ml_flags |= ML_LOCKED_POS; | |
2364 } | |
2365 else /* not enough space in data block */ | |
2366 { | |
2367 /* | |
2368 * If there is not enough room we have to create a new data block and copy some | |
2369 * lines into it. | |
2370 * Then we have to insert an entry in the pointer block. | |
2371 * If this pointer block also is full, we go up another block, and so on, up | |
2372 * to the root if necessary. | |
2373 * The line counts in the pointer blocks have already been adjusted by | |
2374 * ml_find_line(). | |
2375 */ | |
2376 long line_count_left, line_count_right; | |
2377 int page_count_left, page_count_right; | |
2378 bhdr_T *hp_left; | |
2379 bhdr_T *hp_right; | |
2380 bhdr_T *hp_new; | |
2381 int lines_moved; | |
2382 int data_moved = 0; /* init to shut up gcc */ | |
2383 int total_moved = 0; /* init to shut up gcc */ | |
2384 DATA_BL *dp_right, *dp_left; | |
2385 int stack_idx; | |
2386 int in_left; | |
2387 int lineadd; | |
2388 blocknr_T bnum_left, bnum_right; | |
2389 linenr_T lnum_left, lnum_right; | |
2390 int pb_idx; | |
2391 PTR_BL *pp_new; | |
2392 | |
2393 /* | |
2394 * We are going to allocate a new data block. Depending on the | |
2395 * situation it will be put to the left or right of the existing | |
2396 * block. If possible we put the new line in the left block and move | |
2397 * the lines after it to the right block. Otherwise the new line is | |
2398 * also put in the right block. This method is more efficient when | |
2399 * inserting a lot of lines at one place. | |
2400 */ | |
2401 if (db_idx < 0) /* left block is new, right block is existing */ | |
2402 { | |
2403 lines_moved = 0; | |
2404 in_left = TRUE; | |
2405 /* space_needed does not change */ | |
2406 } | |
2407 else /* left block is existing, right block is new */ | |
2408 { | |
2409 lines_moved = line_count - db_idx - 1; | |
2410 if (lines_moved == 0) | |
2411 in_left = FALSE; /* put new line in right block */ | |
2412 /* space_needed does not change */ | |
2413 else | |
2414 { | |
2415 data_moved = ((dp->db_index[db_idx]) & DB_INDEX_MASK) - | |
2416 dp->db_txt_start; | |
2417 total_moved = data_moved + lines_moved * INDEX_SIZE; | |
2418 if ((int)dp->db_free + total_moved >= space_needed) | |
2419 { | |
2420 in_left = TRUE; /* put new line in left block */ | |
2421 space_needed = total_moved; | |
2422 } | |
2423 else | |
2424 { | |
2425 in_left = FALSE; /* put new line in right block */ | |
2426 space_needed += total_moved; | |
2427 } | |
2428 } | |
2429 } | |
2430 | |
2431 page_count = ((space_needed + HEADER_SIZE) + page_size - 1) / page_size; | |
2432 if ((hp_new = ml_new_data(mfp, newfile, page_count)) == NULL) | |
2433 { | |
2434 /* correct line counts in pointer blocks */ | |
2435 --(buf->b_ml.ml_locked_lineadd); | |
2436 --(buf->b_ml.ml_locked_high); | |
2437 return FAIL; | |
2438 } | |
2439 if (db_idx < 0) /* left block is new */ | |
2440 { | |
2441 hp_left = hp_new; | |
2442 hp_right = hp; | |
2443 line_count_left = 0; | |
2444 line_count_right = line_count; | |
2445 } | |
2446 else /* right block is new */ | |
2447 { | |
2448 hp_left = hp; | |
2449 hp_right = hp_new; | |
2450 line_count_left = line_count; | |
2451 line_count_right = 0; | |
2452 } | |
2453 dp_right = (DATA_BL *)(hp_right->bh_data); | |
2454 dp_left = (DATA_BL *)(hp_left->bh_data); | |
2455 bnum_left = hp_left->bh_bnum; | |
2456 bnum_right = hp_right->bh_bnum; | |
2457 page_count_left = hp_left->bh_page_count; | |
2458 page_count_right = hp_right->bh_page_count; | |
2459 | |
2460 /* | |
2461 * May move the new line into the right/new block. | |
2462 */ | |
2463 if (!in_left) | |
2464 { | |
2465 dp_right->db_txt_start -= len; | |
2466 dp_right->db_free -= len + INDEX_SIZE; | |
2467 dp_right->db_index[0] = dp_right->db_txt_start; | |
2468 if (mark) | |
2469 dp_right->db_index[0] |= DB_MARKED; | |
2470 | |
2471 mch_memmove((char *)dp_right + dp_right->db_txt_start, | |
2472 line, (size_t)len); | |
2473 ++line_count_right; | |
2474 } | |
2475 /* | |
2476 * may move lines from the left/old block to the right/new one. | |
2477 */ | |
2478 if (lines_moved) | |
2479 { | |
2480 /* | |
2481 */ | |
2482 dp_right->db_txt_start -= data_moved; | |
2483 dp_right->db_free -= total_moved; | |
2484 mch_memmove((char *)dp_right + dp_right->db_txt_start, | |
2485 (char *)dp_left + dp_left->db_txt_start, | |
2486 (size_t)data_moved); | |
2487 offset = dp_right->db_txt_start - dp_left->db_txt_start; | |
2488 dp_left->db_txt_start += data_moved; | |
2489 dp_left->db_free += total_moved; | |
2490 | |
2491 /* | |
2492 * update indexes in the new block | |
2493 */ | |
2494 for (to = line_count_right, from = db_idx + 1; | |
2495 from < line_count_left; ++from, ++to) | |
2496 dp_right->db_index[to] = dp->db_index[from] + offset; | |
2497 line_count_right += lines_moved; | |
2498 line_count_left -= lines_moved; | |
2499 } | |
2500 | |
2501 /* | |
2502 * May move the new line into the left (old or new) block. | |
2503 */ | |
2504 if (in_left) | |
2505 { | |
2506 dp_left->db_txt_start -= len; | |
2507 dp_left->db_free -= len + INDEX_SIZE; | |
2508 dp_left->db_index[line_count_left] = dp_left->db_txt_start; | |
2509 if (mark) | |
2510 dp_left->db_index[line_count_left] |= DB_MARKED; | |
2511 mch_memmove((char *)dp_left + dp_left->db_txt_start, | |
2512 line, (size_t)len); | |
2513 ++line_count_left; | |
2514 } | |
2515 | |
2516 if (db_idx < 0) /* left block is new */ | |
2517 { | |
2518 lnum_left = lnum + 1; | |
2519 lnum_right = 0; | |
2520 } | |
2521 else /* right block is new */ | |
2522 { | |
2523 lnum_left = 0; | |
2524 if (in_left) | |
2525 lnum_right = lnum + 2; | |
2526 else | |
2527 lnum_right = lnum + 1; | |
2528 } | |
2529 dp_left->db_line_count = line_count_left; | |
2530 dp_right->db_line_count = line_count_right; | |
2531 | |
2532 /* | |
2533 * release the two data blocks | |
2534 * The new one (hp_new) already has a correct blocknumber. | |
2535 * The old one (hp, in ml_locked) gets a positive blocknumber if | |
2536 * we changed it and we are not editing a new file. | |
2537 */ | |
2538 if (lines_moved || in_left) | |
2539 buf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
2540 if (!newfile && db_idx >= 0 && in_left) | |
2541 buf->b_ml.ml_flags |= ML_LOCKED_POS; | |
2542 mf_put(mfp, hp_new, TRUE, FALSE); | |
2543 | |
2544 /* | |
2545 * flush the old data block | |
2546 * set ml_locked_lineadd to 0, because the updating of the | |
2547 * pointer blocks is done below | |
2548 */ | |
2549 lineadd = buf->b_ml.ml_locked_lineadd; | |
2550 buf->b_ml.ml_locked_lineadd = 0; | |
2551 ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush data block */ | |
2552 | |
2553 /* | |
2554 * update pointer blocks for the new data block | |
2555 */ | |
2556 for (stack_idx = buf->b_ml.ml_stack_top - 1; stack_idx >= 0; | |
2557 --stack_idx) | |
2558 { | |
2559 ip = &(buf->b_ml.ml_stack[stack_idx]); | |
2560 pb_idx = ip->ip_index; | |
2561 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
2562 return FAIL; | |
2563 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
2564 if (pp->pb_id != PTR_ID) | |
2565 { | |
2566 EMSG(_("E317: pointer block id wrong 3")); | |
2567 mf_put(mfp, hp, FALSE, FALSE); | |
2568 return FAIL; | |
2569 } | |
2570 /* | |
2571 * TODO: If the pointer block is full and we are adding at the end | |
2572 * try to insert in front of the next block | |
2573 */ | |
2574 /* block not full, add one entry */ | |
2575 if (pp->pb_count < pp->pb_count_max) | |
2576 { | |
2577 if (pb_idx + 1 < (int)pp->pb_count) | |
2578 mch_memmove(&pp->pb_pointer[pb_idx + 2], | |
2579 &pp->pb_pointer[pb_idx + 1], | |
2580 (size_t)(pp->pb_count - pb_idx - 1) * sizeof(PTR_EN)); | |
2581 ++pp->pb_count; | |
2582 pp->pb_pointer[pb_idx].pe_line_count = line_count_left; | |
2583 pp->pb_pointer[pb_idx].pe_bnum = bnum_left; | |
2584 pp->pb_pointer[pb_idx].pe_page_count = page_count_left; | |
2585 pp->pb_pointer[pb_idx + 1].pe_line_count = line_count_right; | |
2586 pp->pb_pointer[pb_idx + 1].pe_bnum = bnum_right; | |
2587 pp->pb_pointer[pb_idx + 1].pe_page_count = page_count_right; | |
2588 | |
2589 if (lnum_left != 0) | |
2590 pp->pb_pointer[pb_idx].pe_old_lnum = lnum_left; | |
2591 if (lnum_right != 0) | |
2592 pp->pb_pointer[pb_idx + 1].pe_old_lnum = lnum_right; | |
2593 | |
2594 mf_put(mfp, hp, TRUE, FALSE); | |
2595 buf->b_ml.ml_stack_top = stack_idx + 1; /* truncate stack */ | |
2596 | |
2597 if (lineadd) | |
2598 { | |
2599 --(buf->b_ml.ml_stack_top); | |
1167 | 2600 /* fix line count for rest of blocks in the stack */ |
7 | 2601 ml_lineadd(buf, lineadd); |
2602 /* fix stack itself */ | |
2603 buf->b_ml.ml_stack[buf->b_ml.ml_stack_top].ip_high += | |
2604 lineadd; | |
2605 ++(buf->b_ml.ml_stack_top); | |
2606 } | |
2607 | |
2608 /* | |
2609 * We are finished, break the loop here. | |
2610 */ | |
2611 break; | |
2612 } | |
2613 else /* pointer block full */ | |
2614 { | |
2615 /* | |
2616 * split the pointer block | |
2617 * allocate a new pointer block | |
2618 * move some of the pointer into the new block | |
2619 * prepare for updating the parent block | |
2620 */ | |
2621 for (;;) /* do this twice when splitting block 1 */ | |
2622 { | |
2623 hp_new = ml_new_ptr(mfp); | |
2624 if (hp_new == NULL) /* TODO: try to fix tree */ | |
2625 return FAIL; | |
2626 pp_new = (PTR_BL *)(hp_new->bh_data); | |
2627 | |
2628 if (hp->bh_bnum != 1) | |
2629 break; | |
2630 | |
2631 /* | |
2632 * if block 1 becomes full the tree is given an extra level | |
2633 * The pointers from block 1 are moved into the new block. | |
2634 * block 1 is updated to point to the new block | |
2635 * then continue to split the new block | |
2636 */ | |
2637 mch_memmove(pp_new, pp, (size_t)page_size); | |
2638 pp->pb_count = 1; | |
2639 pp->pb_pointer[0].pe_bnum = hp_new->bh_bnum; | |
2640 pp->pb_pointer[0].pe_line_count = buf->b_ml.ml_line_count; | |
2641 pp->pb_pointer[0].pe_old_lnum = 1; | |
2642 pp->pb_pointer[0].pe_page_count = 1; | |
2643 mf_put(mfp, hp, TRUE, FALSE); /* release block 1 */ | |
2644 hp = hp_new; /* new block is to be split */ | |
2645 pp = pp_new; | |
2646 CHECK(stack_idx != 0, _("stack_idx should be 0")); | |
2647 ip->ip_index = 0; | |
2648 ++stack_idx; /* do block 1 again later */ | |
2649 } | |
2650 /* | |
2651 * move the pointers after the current one to the new block | |
2652 * If there are none, the new entry will be in the new block. | |
2653 */ | |
2654 total_moved = pp->pb_count - pb_idx - 1; | |
2655 if (total_moved) | |
2656 { | |
2657 mch_memmove(&pp_new->pb_pointer[0], | |
2658 &pp->pb_pointer[pb_idx + 1], | |
2659 (size_t)(total_moved) * sizeof(PTR_EN)); | |
2660 pp_new->pb_count = total_moved; | |
2661 pp->pb_count -= total_moved - 1; | |
2662 pp->pb_pointer[pb_idx + 1].pe_bnum = bnum_right; | |
2663 pp->pb_pointer[pb_idx + 1].pe_line_count = line_count_right; | |
2664 pp->pb_pointer[pb_idx + 1].pe_page_count = page_count_right; | |
2665 if (lnum_right) | |
2666 pp->pb_pointer[pb_idx + 1].pe_old_lnum = lnum_right; | |
2667 } | |
2668 else | |
2669 { | |
2670 pp_new->pb_count = 1; | |
2671 pp_new->pb_pointer[0].pe_bnum = bnum_right; | |
2672 pp_new->pb_pointer[0].pe_line_count = line_count_right; | |
2673 pp_new->pb_pointer[0].pe_page_count = page_count_right; | |
2674 pp_new->pb_pointer[0].pe_old_lnum = lnum_right; | |
2675 } | |
2676 pp->pb_pointer[pb_idx].pe_bnum = bnum_left; | |
2677 pp->pb_pointer[pb_idx].pe_line_count = line_count_left; | |
2678 pp->pb_pointer[pb_idx].pe_page_count = page_count_left; | |
2679 if (lnum_left) | |
2680 pp->pb_pointer[pb_idx].pe_old_lnum = lnum_left; | |
2681 lnum_left = 0; | |
2682 lnum_right = 0; | |
2683 | |
2684 /* | |
2685 * recompute line counts | |
2686 */ | |
2687 line_count_right = 0; | |
2688 for (i = 0; i < (int)pp_new->pb_count; ++i) | |
2689 line_count_right += pp_new->pb_pointer[i].pe_line_count; | |
2690 line_count_left = 0; | |
2691 for (i = 0; i < (int)pp->pb_count; ++i) | |
2692 line_count_left += pp->pb_pointer[i].pe_line_count; | |
2693 | |
2694 bnum_left = hp->bh_bnum; | |
2695 bnum_right = hp_new->bh_bnum; | |
2696 page_count_left = 1; | |
2697 page_count_right = 1; | |
2698 mf_put(mfp, hp, TRUE, FALSE); | |
2699 mf_put(mfp, hp_new, TRUE, FALSE); | |
2700 } | |
2701 } | |
2702 | |
2703 /* | |
2704 * Safety check: fallen out of for loop? | |
2705 */ | |
2706 if (stack_idx < 0) | |
2707 { | |
2708 EMSG(_("E318: Updated too many blocks?")); | |
2709 buf->b_ml.ml_stack_top = 0; /* invalidate stack */ | |
2710 } | |
2711 } | |
2712 | |
2713 #ifdef FEAT_BYTEOFF | |
2714 /* The line was inserted below 'lnum' */ | |
2715 ml_updatechunk(buf, lnum + 1, (long)len, ML_CHNK_ADDLINE); | |
2716 #endif | |
2717 #ifdef FEAT_NETBEANS_INTG | |
2718 if (usingNetbeans) | |
2719 { | |
2720 if (STRLEN(line) > 0) | |
835 | 2721 netbeans_inserted(buf, lnum+1, (colnr_T)0, line, (int)STRLEN(line)); |
34 | 2722 netbeans_inserted(buf, lnum+1, (colnr_T)STRLEN(line), |
7 | 2723 (char_u *)"\n", 1); |
2724 } | |
2725 #endif | |
2726 return OK; | |
2727 } | |
2728 | |
2729 /* | |
625 | 2730 * Replace line lnum, with buffering, in current buffer. |
7 | 2731 * |
720 | 2732 * If "copy" is TRUE, make a copy of the line, otherwise the line has been |
7 | 2733 * copied to allocated memory already. |
2734 * | |
2735 * Check: The caller of this function should probably also call | |
2736 * changed_lines(), unless update_screen(NOT_VALID) is used. | |
2737 * | |
2738 * return FAIL for failure, OK otherwise | |
2739 */ | |
2740 int | |
2741 ml_replace(lnum, line, copy) | |
2742 linenr_T lnum; | |
2743 char_u *line; | |
2744 int copy; | |
2745 { | |
2746 if (line == NULL) /* just checking... */ | |
2747 return FAIL; | |
2748 | |
2749 /* When starting up, we might still need to create the memfile */ | |
2750 if (curbuf->b_ml.ml_mfp == NULL && open_buffer(FALSE, NULL) == FAIL) | |
2751 return FAIL; | |
2752 | |
2753 if (copy && (line = vim_strsave(line)) == NULL) /* allocate memory */ | |
2754 return FAIL; | |
2755 #ifdef FEAT_NETBEANS_INTG | |
2756 if (usingNetbeans) | |
2757 { | |
2758 netbeans_removed(curbuf, lnum, 0, (long)STRLEN(ml_get(lnum))); | |
835 | 2759 netbeans_inserted(curbuf, lnum, 0, line, (int)STRLEN(line)); |
7 | 2760 } |
2761 #endif | |
2762 if (curbuf->b_ml.ml_line_lnum != lnum) /* other line buffered */ | |
2763 ml_flush_line(curbuf); /* flush it */ | |
2764 else if (curbuf->b_ml.ml_flags & ML_LINE_DIRTY) /* same line allocated */ | |
2765 vim_free(curbuf->b_ml.ml_line_ptr); /* free it */ | |
2766 curbuf->b_ml.ml_line_ptr = line; | |
2767 curbuf->b_ml.ml_line_lnum = lnum; | |
2768 curbuf->b_ml.ml_flags = (curbuf->b_ml.ml_flags | ML_LINE_DIRTY) & ~ML_EMPTY; | |
2769 | |
2770 return OK; | |
2771 } | |
2772 | |
2773 /* | |
625 | 2774 * Delete line 'lnum' in the current buffer. |
7 | 2775 * |
2776 * Check: The caller of this function should probably also call | |
2777 * deleted_lines() after this. | |
2778 * | |
2779 * return FAIL for failure, OK otherwise | |
2780 */ | |
2781 int | |
2782 ml_delete(lnum, message) | |
2783 linenr_T lnum; | |
2784 int message; | |
2785 { | |
2786 ml_flush_line(curbuf); | |
2787 return ml_delete_int(curbuf, lnum, message); | |
2788 } | |
2789 | |
2790 static int | |
2791 ml_delete_int(buf, lnum, message) | |
2792 buf_T *buf; | |
2793 linenr_T lnum; | |
2794 int message; | |
2795 { | |
2796 bhdr_T *hp; | |
2797 memfile_T *mfp; | |
2798 DATA_BL *dp; | |
2799 PTR_BL *pp; | |
2800 infoptr_T *ip; | |
2801 int count; /* number of entries in block */ | |
2802 int idx; | |
2803 int stack_idx; | |
2804 int text_start; | |
2805 int line_start; | |
2806 long line_size; | |
2807 int i; | |
2808 | |
2809 if (lnum < 1 || lnum > buf->b_ml.ml_line_count) | |
2810 return FAIL; | |
2811 | |
2812 if (lowest_marked && lowest_marked > lnum) | |
2813 lowest_marked--; | |
2814 | |
2815 /* | |
2816 * If the file becomes empty the last line is replaced by an empty line. | |
2817 */ | |
2818 if (buf->b_ml.ml_line_count == 1) /* file becomes empty */ | |
2819 { | |
2820 if (message | |
2821 #ifdef FEAT_NETBEANS_INTG | |
2822 && !netbeansSuppressNoLines | |
2823 #endif | |
2824 ) | |
680 | 2825 set_keep_msg((char_u *)_(no_lines_msg), 0); |
2826 | |
7 | 2827 /* FEAT_BYTEOFF already handled in there, dont worry 'bout it below */ |
2828 i = ml_replace((linenr_T)1, (char_u *)"", TRUE); | |
2829 buf->b_ml.ml_flags |= ML_EMPTY; | |
2830 | |
2831 return i; | |
2832 } | |
2833 | |
2834 /* | |
2835 * find the data block containing the line | |
2836 * This also fills the stack with the blocks from the root to the data block | |
2837 * This also releases any locked block. | |
2838 */ | |
2839 mfp = buf->b_ml.ml_mfp; | |
2840 if (mfp == NULL) | |
2841 return FAIL; | |
2842 | |
2843 if ((hp = ml_find_line(buf, lnum, ML_DELETE)) == NULL) | |
2844 return FAIL; | |
2845 | |
2846 dp = (DATA_BL *)(hp->bh_data); | |
2847 /* compute line count before the delete */ | |
2848 count = (long)(buf->b_ml.ml_locked_high) | |
2849 - (long)(buf->b_ml.ml_locked_low) + 2; | |
2850 idx = lnum - buf->b_ml.ml_locked_low; | |
2851 | |
2852 --buf->b_ml.ml_line_count; | |
2853 | |
2854 line_start = ((dp->db_index[idx]) & DB_INDEX_MASK); | |
2855 if (idx == 0) /* first line in block, text at the end */ | |
2856 line_size = dp->db_txt_end - line_start; | |
2857 else | |
2858 line_size = ((dp->db_index[idx - 1]) & DB_INDEX_MASK) - line_start; | |
2859 | |
2860 #ifdef FEAT_NETBEANS_INTG | |
2861 if (usingNetbeans) | |
34 | 2862 netbeans_removed(buf, lnum, 0, (long)line_size); |
7 | 2863 #endif |
2864 | |
2865 /* | |
2866 * special case: If there is only one line in the data block it becomes empty. | |
2867 * Then we have to remove the entry, pointing to this data block, from the | |
2868 * pointer block. If this pointer block also becomes empty, we go up another | |
2869 * block, and so on, up to the root if necessary. | |
2870 * The line counts in the pointer blocks have already been adjusted by | |
2871 * ml_find_line(). | |
2872 */ | |
2873 if (count == 1) | |
2874 { | |
2875 mf_free(mfp, hp); /* free the data block */ | |
2876 buf->b_ml.ml_locked = NULL; | |
2877 | |
2878 for (stack_idx = buf->b_ml.ml_stack_top - 1; stack_idx >= 0; --stack_idx) | |
2879 { | |
2880 buf->b_ml.ml_stack_top = 0; /* stack is invalid when failing */ | |
2881 ip = &(buf->b_ml.ml_stack[stack_idx]); | |
2882 idx = ip->ip_index; | |
2883 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
2884 return FAIL; | |
2885 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
2886 if (pp->pb_id != PTR_ID) | |
2887 { | |
2888 EMSG(_("E317: pointer block id wrong 4")); | |
2889 mf_put(mfp, hp, FALSE, FALSE); | |
2890 return FAIL; | |
2891 } | |
2892 count = --(pp->pb_count); | |
2893 if (count == 0) /* the pointer block becomes empty! */ | |
2894 mf_free(mfp, hp); | |
2895 else | |
2896 { | |
2897 if (count != idx) /* move entries after the deleted one */ | |
2898 mch_memmove(&pp->pb_pointer[idx], &pp->pb_pointer[idx + 1], | |
2899 (size_t)(count - idx) * sizeof(PTR_EN)); | |
2900 mf_put(mfp, hp, TRUE, FALSE); | |
2901 | |
2902 buf->b_ml.ml_stack_top = stack_idx; /* truncate stack */ | |
1167 | 2903 /* fix line count for rest of blocks in the stack */ |
2904 if (buf->b_ml.ml_locked_lineadd != 0) | |
7 | 2905 { |
2906 ml_lineadd(buf, buf->b_ml.ml_locked_lineadd); | |
2907 buf->b_ml.ml_stack[buf->b_ml.ml_stack_top].ip_high += | |
1167 | 2908 buf->b_ml.ml_locked_lineadd; |
7 | 2909 } |
2910 ++(buf->b_ml.ml_stack_top); | |
2911 | |
2912 break; | |
2913 } | |
2914 } | |
2915 CHECK(stack_idx < 0, _("deleted block 1?")); | |
2916 } | |
2917 else | |
2918 { | |
2919 /* | |
2920 * delete the text by moving the next lines forwards | |
2921 */ | |
2922 text_start = dp->db_txt_start; | |
2923 mch_memmove((char *)dp + text_start + line_size, | |
2924 (char *)dp + text_start, (size_t)(line_start - text_start)); | |
2925 | |
2926 /* | |
2927 * delete the index by moving the next indexes backwards | |
2928 * Adjust the indexes for the text movement. | |
2929 */ | |
2930 for (i = idx; i < count - 1; ++i) | |
2931 dp->db_index[i] = dp->db_index[i + 1] + line_size; | |
2932 | |
2933 dp->db_free += line_size + INDEX_SIZE; | |
2934 dp->db_txt_start += line_size; | |
2935 --(dp->db_line_count); | |
2936 | |
2937 /* | |
2938 * mark the block dirty and make sure it is in the file (for recovery) | |
2939 */ | |
2940 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
2941 } | |
2942 | |
2943 #ifdef FEAT_BYTEOFF | |
2944 ml_updatechunk(buf, lnum, line_size, ML_CHNK_DELLINE); | |
2945 #endif | |
2946 return OK; | |
2947 } | |
2948 | |
2949 /* | |
2950 * set the B_MARKED flag for line 'lnum' | |
2951 */ | |
2952 void | |
2953 ml_setmarked(lnum) | |
2954 linenr_T lnum; | |
2955 { | |
2956 bhdr_T *hp; | |
2957 DATA_BL *dp; | |
2958 /* invalid line number */ | |
2959 if (lnum < 1 || lnum > curbuf->b_ml.ml_line_count | |
2960 || curbuf->b_ml.ml_mfp == NULL) | |
2961 return; /* give error message? */ | |
2962 | |
2963 if (lowest_marked == 0 || lowest_marked > lnum) | |
2964 lowest_marked = lnum; | |
2965 | |
2966 /* | |
2967 * find the data block containing the line | |
2968 * This also fills the stack with the blocks from the root to the data block | |
2969 * This also releases any locked block. | |
2970 */ | |
2971 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
2972 return; /* give error message? */ | |
2973 | |
2974 dp = (DATA_BL *)(hp->bh_data); | |
2975 dp->db_index[lnum - curbuf->b_ml.ml_locked_low] |= DB_MARKED; | |
2976 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
2977 } | |
2978 | |
2979 /* | |
2980 * find the first line with its B_MARKED flag set | |
2981 */ | |
2982 linenr_T | |
2983 ml_firstmarked() | |
2984 { | |
2985 bhdr_T *hp; | |
2986 DATA_BL *dp; | |
2987 linenr_T lnum; | |
2988 int i; | |
2989 | |
2990 if (curbuf->b_ml.ml_mfp == NULL) | |
2991 return (linenr_T) 0; | |
2992 | |
2993 /* | |
2994 * The search starts with lowest_marked line. This is the last line where | |
2995 * a mark was found, adjusted by inserting/deleting lines. | |
2996 */ | |
2997 for (lnum = lowest_marked; lnum <= curbuf->b_ml.ml_line_count; ) | |
2998 { | |
2999 /* | |
3000 * Find the data block containing the line. | |
3001 * This also fills the stack with the blocks from the root to the data | |
3002 * block This also releases any locked block. | |
3003 */ | |
3004 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
3005 return (linenr_T)0; /* give error message? */ | |
3006 | |
3007 dp = (DATA_BL *)(hp->bh_data); | |
3008 | |
3009 for (i = lnum - curbuf->b_ml.ml_locked_low; | |
3010 lnum <= curbuf->b_ml.ml_locked_high; ++i, ++lnum) | |
3011 if ((dp->db_index[i]) & DB_MARKED) | |
3012 { | |
3013 (dp->db_index[i]) &= DB_INDEX_MASK; | |
3014 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
3015 lowest_marked = lnum + 1; | |
3016 return lnum; | |
3017 } | |
3018 } | |
3019 | |
3020 return (linenr_T) 0; | |
3021 } | |
3022 | |
3023 #if 0 /* not used */ | |
3024 /* | |
3025 * return TRUE if line 'lnum' has a mark | |
3026 */ | |
3027 int | |
3028 ml_has_mark(lnum) | |
3029 linenr_T lnum; | |
3030 { | |
3031 bhdr_T *hp; | |
3032 DATA_BL *dp; | |
3033 | |
3034 if (curbuf->b_ml.ml_mfp == NULL | |
3035 || (hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
3036 return FALSE; | |
3037 | |
3038 dp = (DATA_BL *)(hp->bh_data); | |
3039 return (int)((dp->db_index[lnum - curbuf->b_ml.ml_locked_low]) & DB_MARKED); | |
3040 } | |
3041 #endif | |
3042 | |
3043 /* | |
3044 * clear all DB_MARKED flags | |
3045 */ | |
3046 void | |
3047 ml_clearmarked() | |
3048 { | |
3049 bhdr_T *hp; | |
3050 DATA_BL *dp; | |
3051 linenr_T lnum; | |
3052 int i; | |
3053 | |
3054 if (curbuf->b_ml.ml_mfp == NULL) /* nothing to do */ | |
3055 return; | |
3056 | |
3057 /* | |
3058 * The search starts with line lowest_marked. | |
3059 */ | |
3060 for (lnum = lowest_marked; lnum <= curbuf->b_ml.ml_line_count; ) | |
3061 { | |
3062 /* | |
3063 * Find the data block containing the line. | |
3064 * This also fills the stack with the blocks from the root to the data | |
3065 * block and releases any locked block. | |
3066 */ | |
3067 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
3068 return; /* give error message? */ | |
3069 | |
3070 dp = (DATA_BL *)(hp->bh_data); | |
3071 | |
3072 for (i = lnum - curbuf->b_ml.ml_locked_low; | |
3073 lnum <= curbuf->b_ml.ml_locked_high; ++i, ++lnum) | |
3074 if ((dp->db_index[i]) & DB_MARKED) | |
3075 { | |
3076 (dp->db_index[i]) &= DB_INDEX_MASK; | |
3077 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
3078 } | |
3079 } | |
3080 | |
3081 lowest_marked = 0; | |
3082 return; | |
3083 } | |
3084 | |
3085 /* | |
3086 * flush ml_line if necessary | |
3087 */ | |
3088 static void | |
3089 ml_flush_line(buf) | |
3090 buf_T *buf; | |
3091 { | |
3092 bhdr_T *hp; | |
3093 DATA_BL *dp; | |
3094 linenr_T lnum; | |
3095 char_u *new_line; | |
3096 char_u *old_line; | |
3097 colnr_T new_len; | |
3098 int old_len; | |
3099 int extra; | |
3100 int idx; | |
3101 int start; | |
3102 int count; | |
3103 int i; | |
2075
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Bram Moolenaar <bram@zimbu.org>
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2003
diff
changeset
|
3104 static int entered = FALSE; |
7 | 3105 |
3106 if (buf->b_ml.ml_line_lnum == 0 || buf->b_ml.ml_mfp == NULL) | |
3107 return; /* nothing to do */ | |
3108 | |
3109 if (buf->b_ml.ml_flags & ML_LINE_DIRTY) | |
3110 { | |
2075
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parents:
2003
diff
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|
3111 /* This code doesn't work recursively, but Netbeans may call back here |
903fcd726d90
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Bram Moolenaar <bram@zimbu.org>
parents:
2003
diff
changeset
|
3112 * when obtaining the cursor position. */ |
903fcd726d90
updated for version 7.2.359
Bram Moolenaar <bram@zimbu.org>
parents:
2003
diff
changeset
|
3113 if (entered) |
903fcd726d90
updated for version 7.2.359
Bram Moolenaar <bram@zimbu.org>
parents:
2003
diff
changeset
|
3114 return; |
903fcd726d90
updated for version 7.2.359
Bram Moolenaar <bram@zimbu.org>
parents:
2003
diff
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|
3115 entered = TRUE; |
903fcd726d90
updated for version 7.2.359
Bram Moolenaar <bram@zimbu.org>
parents:
2003
diff
changeset
|
3116 |
7 | 3117 lnum = buf->b_ml.ml_line_lnum; |
3118 new_line = buf->b_ml.ml_line_ptr; | |
3119 | |
3120 hp = ml_find_line(buf, lnum, ML_FIND); | |
3121 if (hp == NULL) | |
3122 EMSGN(_("E320: Cannot find line %ld"), lnum); | |
3123 else | |
3124 { | |
3125 dp = (DATA_BL *)(hp->bh_data); | |
3126 idx = lnum - buf->b_ml.ml_locked_low; | |
3127 start = ((dp->db_index[idx]) & DB_INDEX_MASK); | |
3128 old_line = (char_u *)dp + start; | |
3129 if (idx == 0) /* line is last in block */ | |
3130 old_len = dp->db_txt_end - start; | |
3131 else /* text of previous line follows */ | |
3132 old_len = (dp->db_index[idx - 1] & DB_INDEX_MASK) - start; | |
3133 new_len = (colnr_T)STRLEN(new_line) + 1; | |
3134 extra = new_len - old_len; /* negative if lines gets smaller */ | |
3135 | |
3136 /* | |
3137 * if new line fits in data block, replace directly | |
3138 */ | |
3139 if ((int)dp->db_free >= extra) | |
3140 { | |
3141 /* if the length changes and there are following lines */ | |
3142 count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low + 1; | |
3143 if (extra != 0 && idx < count - 1) | |
3144 { | |
3145 /* move text of following lines */ | |
3146 mch_memmove((char *)dp + dp->db_txt_start - extra, | |
3147 (char *)dp + dp->db_txt_start, | |
3148 (size_t)(start - dp->db_txt_start)); | |
3149 | |
3150 /* adjust pointers of this and following lines */ | |
3151 for (i = idx + 1; i < count; ++i) | |
3152 dp->db_index[i] -= extra; | |
3153 } | |
3154 dp->db_index[idx] -= extra; | |
3155 | |
3156 /* adjust free space */ | |
3157 dp->db_free -= extra; | |
3158 dp->db_txt_start -= extra; | |
3159 | |
3160 /* copy new line into the data block */ | |
3161 mch_memmove(old_line - extra, new_line, (size_t)new_len); | |
3162 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
3163 #ifdef FEAT_BYTEOFF | |
3164 /* The else case is already covered by the insert and delete */ | |
3165 ml_updatechunk(buf, lnum, (long)extra, ML_CHNK_UPDLINE); | |
3166 #endif | |
3167 } | |
3168 else | |
3169 { | |
3170 /* | |
3171 * Cannot do it in one data block: Delete and append. | |
3172 * Append first, because ml_delete_int() cannot delete the | |
3173 * last line in a buffer, which causes trouble for a buffer | |
3174 * that has only one line. | |
3175 * Don't forget to copy the mark! | |
3176 */ | |
3177 /* How about handling errors??? */ | |
3178 (void)ml_append_int(buf, lnum, new_line, new_len, FALSE, | |
3179 (dp->db_index[idx] & DB_MARKED)); | |
3180 (void)ml_delete_int(buf, lnum, FALSE); | |
3181 } | |
3182 } | |
3183 vim_free(new_line); | |
2075
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Bram Moolenaar <bram@zimbu.org>
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diff
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|
3184 |
903fcd726d90
updated for version 7.2.359
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parents:
2003
diff
changeset
|
3185 entered = FALSE; |
7 | 3186 } |
3187 | |
3188 buf->b_ml.ml_line_lnum = 0; | |
3189 } | |
3190 | |
3191 /* | |
3192 * create a new, empty, data block | |
3193 */ | |
3194 static bhdr_T * | |
3195 ml_new_data(mfp, negative, page_count) | |
3196 memfile_T *mfp; | |
3197 int negative; | |
3198 int page_count; | |
3199 { | |
3200 bhdr_T *hp; | |
3201 DATA_BL *dp; | |
3202 | |
3203 if ((hp = mf_new(mfp, negative, page_count)) == NULL) | |
3204 return NULL; | |
3205 | |
3206 dp = (DATA_BL *)(hp->bh_data); | |
3207 dp->db_id = DATA_ID; | |
3208 dp->db_txt_start = dp->db_txt_end = page_count * mfp->mf_page_size; | |
3209 dp->db_free = dp->db_txt_start - HEADER_SIZE; | |
3210 dp->db_line_count = 0; | |
3211 | |
3212 return hp; | |
3213 } | |
3214 | |
3215 /* | |
3216 * create a new, empty, pointer block | |
3217 */ | |
3218 static bhdr_T * | |
3219 ml_new_ptr(mfp) | |
3220 memfile_T *mfp; | |
3221 { | |
3222 bhdr_T *hp; | |
3223 PTR_BL *pp; | |
3224 | |
3225 if ((hp = mf_new(mfp, FALSE, 1)) == NULL) | |
3226 return NULL; | |
3227 | |
3228 pp = (PTR_BL *)(hp->bh_data); | |
3229 pp->pb_id = PTR_ID; | |
3230 pp->pb_count = 0; | |
3231 pp->pb_count_max = (short_u)((mfp->mf_page_size - sizeof(PTR_BL)) / sizeof(PTR_EN) + 1); | |
3232 | |
3233 return hp; | |
3234 } | |
3235 | |
3236 /* | |
3237 * lookup line 'lnum' in a memline | |
3238 * | |
3239 * action: if ML_DELETE or ML_INSERT the line count is updated while searching | |
3240 * if ML_FLUSH only flush a locked block | |
3241 * if ML_FIND just find the line | |
3242 * | |
3243 * If the block was found it is locked and put in ml_locked. | |
3244 * The stack is updated to lead to the locked block. The ip_high field in | |
3245 * the stack is updated to reflect the last line in the block AFTER the | |
3246 * insert or delete, also if the pointer block has not been updated yet. But | |
1167 | 3247 * if ml_locked != NULL ml_locked_lineadd must be added to ip_high. |
7 | 3248 * |
3249 * return: NULL for failure, pointer to block header otherwise | |
3250 */ | |
3251 static bhdr_T * | |
3252 ml_find_line(buf, lnum, action) | |
3253 buf_T *buf; | |
3254 linenr_T lnum; | |
3255 int action; | |
3256 { | |
3257 DATA_BL *dp; | |
3258 PTR_BL *pp; | |
3259 infoptr_T *ip; | |
3260 bhdr_T *hp; | |
3261 memfile_T *mfp; | |
3262 linenr_T t; | |
3263 blocknr_T bnum, bnum2; | |
3264 int dirty; | |
3265 linenr_T low, high; | |
3266 int top; | |
3267 int page_count; | |
3268 int idx; | |
3269 | |
3270 mfp = buf->b_ml.ml_mfp; | |
3271 | |
3272 /* | |
3273 * If there is a locked block check if the wanted line is in it. | |
3274 * If not, flush and release the locked block. | |
3275 * Don't do this for ML_INSERT_SAME, because the stack need to be updated. | |
3276 * Don't do this for ML_FLUSH, because we want to flush the locked block. | |
1066 | 3277 * Don't do this when 'swapfile' is reset, we want to load all the blocks. |
7 | 3278 */ |
3279 if (buf->b_ml.ml_locked) | |
3280 { | |
1066 | 3281 if (ML_SIMPLE(action) |
3282 && buf->b_ml.ml_locked_low <= lnum | |
3283 && buf->b_ml.ml_locked_high >= lnum | |
3284 && !mf_dont_release) | |
7 | 3285 { |
1066 | 3286 /* remember to update pointer blocks and stack later */ |
7 | 3287 if (action == ML_INSERT) |
3288 { | |
3289 ++(buf->b_ml.ml_locked_lineadd); | |
3290 ++(buf->b_ml.ml_locked_high); | |
3291 } | |
3292 else if (action == ML_DELETE) | |
3293 { | |
3294 --(buf->b_ml.ml_locked_lineadd); | |
3295 --(buf->b_ml.ml_locked_high); | |
3296 } | |
3297 return (buf->b_ml.ml_locked); | |
3298 } | |
3299 | |
3300 mf_put(mfp, buf->b_ml.ml_locked, buf->b_ml.ml_flags & ML_LOCKED_DIRTY, | |
3301 buf->b_ml.ml_flags & ML_LOCKED_POS); | |
3302 buf->b_ml.ml_locked = NULL; | |
3303 | |
1167 | 3304 /* |
3305 * If lines have been added or deleted in the locked block, need to | |
3306 * update the line count in pointer blocks. | |
3307 */ | |
3308 if (buf->b_ml.ml_locked_lineadd != 0) | |
7 | 3309 ml_lineadd(buf, buf->b_ml.ml_locked_lineadd); |
3310 } | |
3311 | |
3312 if (action == ML_FLUSH) /* nothing else to do */ | |
3313 return NULL; | |
3314 | |
3315 bnum = 1; /* start at the root of the tree */ | |
3316 page_count = 1; | |
3317 low = 1; | |
3318 high = buf->b_ml.ml_line_count; | |
3319 | |
3320 if (action == ML_FIND) /* first try stack entries */ | |
3321 { | |
3322 for (top = buf->b_ml.ml_stack_top - 1; top >= 0; --top) | |
3323 { | |
3324 ip = &(buf->b_ml.ml_stack[top]); | |
3325 if (ip->ip_low <= lnum && ip->ip_high >= lnum) | |
3326 { | |
3327 bnum = ip->ip_bnum; | |
3328 low = ip->ip_low; | |
3329 high = ip->ip_high; | |
3330 buf->b_ml.ml_stack_top = top; /* truncate stack at prev entry */ | |
3331 break; | |
3332 } | |
3333 } | |
3334 if (top < 0) | |
3335 buf->b_ml.ml_stack_top = 0; /* not found, start at the root */ | |
3336 } | |
3337 else /* ML_DELETE or ML_INSERT */ | |
3338 buf->b_ml.ml_stack_top = 0; /* start at the root */ | |
3339 | |
3340 /* | |
3341 * search downwards in the tree until a data block is found | |
3342 */ | |
3343 for (;;) | |
3344 { | |
3345 if ((hp = mf_get(mfp, bnum, page_count)) == NULL) | |
3346 goto error_noblock; | |
3347 | |
3348 /* | |
3349 * update high for insert/delete | |
3350 */ | |
3351 if (action == ML_INSERT) | |
3352 ++high; | |
3353 else if (action == ML_DELETE) | |
3354 --high; | |
3355 | |
3356 dp = (DATA_BL *)(hp->bh_data); | |
3357 if (dp->db_id == DATA_ID) /* data block */ | |
3358 { | |
3359 buf->b_ml.ml_locked = hp; | |
3360 buf->b_ml.ml_locked_low = low; | |
3361 buf->b_ml.ml_locked_high = high; | |
3362 buf->b_ml.ml_locked_lineadd = 0; | |
3363 buf->b_ml.ml_flags &= ~(ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
3364 return hp; | |
3365 } | |
3366 | |
3367 pp = (PTR_BL *)(dp); /* must be pointer block */ | |
3368 if (pp->pb_id != PTR_ID) | |
3369 { | |
3370 EMSG(_("E317: pointer block id wrong")); | |
3371 goto error_block; | |
3372 } | |
3373 | |
3374 if ((top = ml_add_stack(buf)) < 0) /* add new entry to stack */ | |
3375 goto error_block; | |
3376 ip = &(buf->b_ml.ml_stack[top]); | |
3377 ip->ip_bnum = bnum; | |
3378 ip->ip_low = low; | |
3379 ip->ip_high = high; | |
3380 ip->ip_index = -1; /* index not known yet */ | |
3381 | |
3382 dirty = FALSE; | |
3383 for (idx = 0; idx < (int)pp->pb_count; ++idx) | |
3384 { | |
3385 t = pp->pb_pointer[idx].pe_line_count; | |
3386 CHECK(t == 0, _("pe_line_count is zero")); | |
3387 if ((low += t) > lnum) | |
3388 { | |
3389 ip->ip_index = idx; | |
3390 bnum = pp->pb_pointer[idx].pe_bnum; | |
3391 page_count = pp->pb_pointer[idx].pe_page_count; | |
3392 high = low - 1; | |
3393 low -= t; | |
3394 | |
3395 /* | |
3396 * a negative block number may have been changed | |
3397 */ | |
3398 if (bnum < 0) | |
3399 { | |
3400 bnum2 = mf_trans_del(mfp, bnum); | |
3401 if (bnum != bnum2) | |
3402 { | |
3403 bnum = bnum2; | |
3404 pp->pb_pointer[idx].pe_bnum = bnum; | |
3405 dirty = TRUE; | |
3406 } | |
3407 } | |
3408 | |
3409 break; | |
3410 } | |
3411 } | |
3412 if (idx >= (int)pp->pb_count) /* past the end: something wrong! */ | |
3413 { | |
3414 if (lnum > buf->b_ml.ml_line_count) | |
3415 EMSGN(_("E322: line number out of range: %ld past the end"), | |
3416 lnum - buf->b_ml.ml_line_count); | |
3417 | |
3418 else | |
3419 EMSGN(_("E323: line count wrong in block %ld"), bnum); | |
3420 goto error_block; | |
3421 } | |
3422 if (action == ML_DELETE) | |
3423 { | |
3424 pp->pb_pointer[idx].pe_line_count--; | |
3425 dirty = TRUE; | |
3426 } | |
3427 else if (action == ML_INSERT) | |
3428 { | |
3429 pp->pb_pointer[idx].pe_line_count++; | |
3430 dirty = TRUE; | |
3431 } | |
3432 mf_put(mfp, hp, dirty, FALSE); | |
3433 } | |
3434 | |
3435 error_block: | |
3436 mf_put(mfp, hp, FALSE, FALSE); | |
3437 error_noblock: | |
3438 /* | |
3439 * If action is ML_DELETE or ML_INSERT we have to correct the tree for | |
3440 * the incremented/decremented line counts, because there won't be a line | |
3441 * inserted/deleted after all. | |
3442 */ | |
3443 if (action == ML_DELETE) | |
3444 ml_lineadd(buf, 1); | |
3445 else if (action == ML_INSERT) | |
3446 ml_lineadd(buf, -1); | |
3447 buf->b_ml.ml_stack_top = 0; | |
3448 return NULL; | |
3449 } | |
3450 | |
3451 /* | |
3452 * add an entry to the info pointer stack | |
3453 * | |
3454 * return -1 for failure, number of the new entry otherwise | |
3455 */ | |
3456 static int | |
3457 ml_add_stack(buf) | |
3458 buf_T *buf; | |
3459 { | |
3460 int top; | |
3461 infoptr_T *newstack; | |
3462 | |
3463 top = buf->b_ml.ml_stack_top; | |
3464 | |
3465 /* may have to increase the stack size */ | |
3466 if (top == buf->b_ml.ml_stack_size) | |
3467 { | |
3468 CHECK(top > 0, _("Stack size increases")); /* more than 5 levels??? */ | |
3469 | |
3470 newstack = (infoptr_T *)alloc((unsigned)sizeof(infoptr_T) * | |
3471 (buf->b_ml.ml_stack_size + STACK_INCR)); | |
3472 if (newstack == NULL) | |
3473 return -1; | |
1624 | 3474 mch_memmove(newstack, buf->b_ml.ml_stack, |
3475 (size_t)top * sizeof(infoptr_T)); | |
7 | 3476 vim_free(buf->b_ml.ml_stack); |
3477 buf->b_ml.ml_stack = newstack; | |
3478 buf->b_ml.ml_stack_size += STACK_INCR; | |
3479 } | |
3480 | |
3481 buf->b_ml.ml_stack_top++; | |
3482 return top; | |
3483 } | |
3484 | |
3485 /* | |
3486 * Update the pointer blocks on the stack for inserted/deleted lines. | |
3487 * The stack itself is also updated. | |
3488 * | |
3489 * When a insert/delete line action fails, the line is not inserted/deleted, | |
3490 * but the pointer blocks have already been updated. That is fixed here by | |
3491 * walking through the stack. | |
3492 * | |
3493 * Count is the number of lines added, negative if lines have been deleted. | |
3494 */ | |
3495 static void | |
3496 ml_lineadd(buf, count) | |
3497 buf_T *buf; | |
3498 int count; | |
3499 { | |
3500 int idx; | |
3501 infoptr_T *ip; | |
3502 PTR_BL *pp; | |
3503 memfile_T *mfp = buf->b_ml.ml_mfp; | |
3504 bhdr_T *hp; | |
3505 | |
3506 for (idx = buf->b_ml.ml_stack_top - 1; idx >= 0; --idx) | |
3507 { | |
3508 ip = &(buf->b_ml.ml_stack[idx]); | |
3509 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
3510 break; | |
3511 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
3512 if (pp->pb_id != PTR_ID) | |
3513 { | |
3514 mf_put(mfp, hp, FALSE, FALSE); | |
3515 EMSG(_("E317: pointer block id wrong 2")); | |
3516 break; | |
3517 } | |
3518 pp->pb_pointer[ip->ip_index].pe_line_count += count; | |
3519 ip->ip_high += count; | |
3520 mf_put(mfp, hp, TRUE, FALSE); | |
3521 } | |
3522 } | |
3523 | |
594 | 3524 #ifdef HAVE_READLINK |
3525 /* | |
3526 * Resolve a symlink in the last component of a file name. | |
3527 * Note that f_resolve() does it for every part of the path, we don't do that | |
3528 * here. | |
3529 * If it worked returns OK and the resolved link in "buf[MAXPATHL]". | |
3530 * Otherwise returns FAIL. | |
3531 */ | |
3532 static int | |
3533 resolve_symlink(fname, buf) | |
3534 char_u *fname; | |
3535 char_u *buf; | |
3536 { | |
3537 char_u tmp[MAXPATHL]; | |
3538 int ret; | |
3539 int depth = 0; | |
3540 | |
3541 if (fname == NULL) | |
3542 return FAIL; | |
3543 | |
3544 /* Put the result so far in tmp[], starting with the original name. */ | |
3545 vim_strncpy(tmp, fname, MAXPATHL - 1); | |
3546 | |
3547 for (;;) | |
3548 { | |
3549 /* Limit symlink depth to 100, catch recursive loops. */ | |
3550 if (++depth == 100) | |
3551 { | |
3552 EMSG2(_("E773: Symlink loop for \"%s\""), fname); | |
3553 return FAIL; | |
3554 } | |
3555 | |
3556 ret = readlink((char *)tmp, (char *)buf, MAXPATHL - 1); | |
3557 if (ret <= 0) | |
3558 { | |
619 | 3559 if (errno == EINVAL || errno == ENOENT) |
594 | 3560 { |
619 | 3561 /* Found non-symlink or not existing file, stop here. |
1855 | 3562 * When at the first level use the unmodified name, skip the |
594 | 3563 * call to vim_FullName(). */ |
3564 if (depth == 1) | |
3565 return FAIL; | |
3566 | |
3567 /* Use the resolved name in tmp[]. */ | |
3568 break; | |
3569 } | |
3570 | |
3571 /* There must be some error reading links, use original name. */ | |
3572 return FAIL; | |
3573 } | |
3574 buf[ret] = NUL; | |
3575 | |
3576 /* | |
3577 * Check whether the symlink is relative or absolute. | |
3578 * If it's relative, build a new path based on the directory | |
3579 * portion of the filename (if any) and the path the symlink | |
3580 * points to. | |
3581 */ | |
3582 if (mch_isFullName(buf)) | |
3583 STRCPY(tmp, buf); | |
3584 else | |
3585 { | |
3586 char_u *tail; | |
3587 | |
3588 tail = gettail(tmp); | |
3589 if (STRLEN(tail) + STRLEN(buf) >= MAXPATHL) | |
3590 return FAIL; | |
3591 STRCPY(tail, buf); | |
3592 } | |
3593 } | |
3594 | |
3595 /* | |
3596 * Try to resolve the full name of the file so that the swapfile name will | |
3597 * be consistent even when opening a relative symlink from different | |
3598 * working directories. | |
3599 */ | |
3600 return vim_FullName(tmp, buf, MAXPATHL, TRUE); | |
3601 } | |
3602 #endif | |
3603 | |
7 | 3604 /* |
460 | 3605 * Make swap file name out of the file name and a directory name. |
3606 * Returns pointer to allocated memory or NULL. | |
7 | 3607 */ |
460 | 3608 char_u * |
3609 makeswapname(fname, ffname, buf, dir_name) | |
3610 char_u *fname; | |
1978 | 3611 char_u *ffname UNUSED; |
7 | 3612 buf_T *buf; |
3613 char_u *dir_name; | |
3614 { | |
3615 char_u *r, *s; | |
2145
de0e7ca61893
updated for version 7.2.427
Bram Moolenaar <bram@zimbu.org>
parents:
2108
diff
changeset
|
3616 char_u *fname_res = fname; |
594 | 3617 #ifdef HAVE_READLINK |
3618 char_u fname_buf[MAXPATHL]; | |
3619 #endif | |
7 | 3620 |
3621 #if defined(UNIX) || defined(WIN3264) /* Need _very_ long file names */ | |
3622 s = dir_name + STRLEN(dir_name); | |
39 | 3623 if (after_pathsep(dir_name, s) && s[-1] == s[-2]) |
7 | 3624 { /* Ends with '//', Use Full path */ |
3625 r = NULL; | |
460 | 3626 if ((s = make_percent_swname(dir_name, fname)) != NULL) |
7 | 3627 { |
3628 r = modname(s, (char_u *)".swp", FALSE); | |
3629 vim_free(s); | |
3630 } | |
3631 return r; | |
3632 } | |
3633 #endif | |
3634 | |
594 | 3635 #ifdef HAVE_READLINK |
3636 /* Expand symlink in the file name, so that we put the swap file with the | |
3637 * actual file instead of with the symlink. */ | |
3638 if (resolve_symlink(fname, fname_buf) == OK) | |
3639 fname_res = fname_buf; | |
3640 #endif | |
3641 | |
7 | 3642 r = buf_modname( |
3643 #ifdef SHORT_FNAME | |
3644 TRUE, | |
3645 #else | |
3646 (buf->b_p_sn || buf->b_shortname), | |
3647 #endif | |
1082 | 3648 #ifdef RISCOS |
3649 /* Avoid problems if fname has special chars, eg <Wimp$Scrap> */ | |
460 | 3650 ffname, |
7 | 3651 #else |
594 | 3652 fname_res, |
7 | 3653 #endif |
3654 (char_u *) | |
3655 #if defined(VMS) || defined(RISCOS) | |
3656 "_swp", | |
3657 #else | |
3658 ".swp", | |
3659 #endif | |
3660 #ifdef SHORT_FNAME /* always 8.3 file name */ | |
3661 FALSE | |
3662 #else | |
3663 /* Prepend a '.' to the swap file name for the current directory. */ | |
3664 dir_name[0] == '.' && dir_name[1] == NUL | |
3665 #endif | |
3666 ); | |
3667 if (r == NULL) /* out of memory */ | |
3668 return NULL; | |
3669 | |
3670 s = get_file_in_dir(r, dir_name); | |
3671 vim_free(r); | |
3672 return s; | |
3673 } | |
3674 | |
3675 /* | |
3676 * Get file name to use for swap file or backup file. | |
3677 * Use the name of the edited file "fname" and an entry in the 'dir' or 'bdir' | |
3678 * option "dname". | |
3679 * - If "dname" is ".", return "fname" (swap file in dir of file). | |
3680 * - If "dname" starts with "./", insert "dname" in "fname" (swap file | |
3681 * relative to dir of file). | |
3682 * - Otherwise, prepend "dname" to the tail of "fname" (swap file in specific | |
3683 * dir). | |
3684 * | |
3685 * The return value is an allocated string and can be NULL. | |
3686 */ | |
3687 char_u * | |
3688 get_file_in_dir(fname, dname) | |
3689 char_u *fname; | |
3690 char_u *dname; /* don't use "dirname", it is a global for Alpha */ | |
3691 { | |
3692 char_u *t; | |
3693 char_u *tail; | |
3694 char_u *retval; | |
3695 int save_char; | |
3696 | |
3697 tail = gettail(fname); | |
3698 | |
3699 if (dname[0] == '.' && dname[1] == NUL) | |
3700 retval = vim_strsave(fname); | |
3701 else if (dname[0] == '.' && vim_ispathsep(dname[1])) | |
3702 { | |
3703 if (tail == fname) /* no path before file name */ | |
3704 retval = concat_fnames(dname + 2, tail, TRUE); | |
3705 else | |
3706 { | |
3707 save_char = *tail; | |
3708 *tail = NUL; | |
3709 t = concat_fnames(fname, dname + 2, TRUE); | |
3710 *tail = save_char; | |
3711 if (t == NULL) /* out of memory */ | |
3712 retval = NULL; | |
3713 else | |
3714 { | |
3715 retval = concat_fnames(t, tail, TRUE); | |
3716 vim_free(t); | |
3717 } | |
3718 } | |
3719 } | |
3720 else | |
3721 retval = concat_fnames(dname, tail, TRUE); | |
3722 | |
3723 return retval; | |
3724 } | |
3725 | |
580 | 3726 static void attention_message __ARGS((buf_T *buf, char_u *fname)); |
3727 | |
3728 /* | |
3729 * Print the ATTENTION message: info about an existing swap file. | |
3730 */ | |
3731 static void | |
3732 attention_message(buf, fname) | |
3733 buf_T *buf; /* buffer being edited */ | |
3734 char_u *fname; /* swap file name */ | |
3735 { | |
3736 struct stat st; | |
3737 time_t x, sx; | |
1001 | 3738 char *p; |
580 | 3739 |
3740 ++no_wait_return; | |
3741 (void)EMSG(_("E325: ATTENTION")); | |
3742 MSG_PUTS(_("\nFound a swap file by the name \"")); | |
3743 msg_home_replace(fname); | |
3744 MSG_PUTS("\"\n"); | |
3745 sx = swapfile_info(fname); | |
3746 MSG_PUTS(_("While opening file \"")); | |
3747 msg_outtrans(buf->b_fname); | |
3748 MSG_PUTS("\"\n"); | |
3749 if (mch_stat((char *)buf->b_fname, &st) != -1) | |
3750 { | |
3751 MSG_PUTS(_(" dated: ")); | |
3752 x = st.st_mtime; /* Manx C can't do &st.st_mtime */ | |
1001 | 3753 p = ctime(&x); /* includes '\n' */ |
3754 if (p == NULL) | |
3755 MSG_PUTS("(invalid)\n"); | |
3756 else | |
3757 MSG_PUTS(p); | |
580 | 3758 if (sx != 0 && x > sx) |
3759 MSG_PUTS(_(" NEWER than swap file!\n")); | |
3760 } | |
3761 /* Some of these messages are long to allow translation to | |
3762 * other languages. */ | |
3763 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")); | |
3764 MSG_PUTS(_(" Quit, or continue with caution.\n")); | |
3765 MSG_PUTS(_("\n(2) An edit session for this file crashed.\n")); | |
3766 MSG_PUTS(_(" If this is the case, use \":recover\" or \"vim -r ")); | |
3767 msg_outtrans(buf->b_fname); | |
3768 MSG_PUTS(_("\"\n to recover the changes (see \":help recovery\").\n")); | |
3769 MSG_PUTS(_(" If you did this already, delete the swap file \"")); | |
3770 msg_outtrans(fname); | |
3771 MSG_PUTS(_("\"\n to avoid this message.\n")); | |
3772 cmdline_row = msg_row; | |
3773 --no_wait_return; | |
3774 } | |
3775 | |
3776 #ifdef FEAT_AUTOCMD | |
3777 static int do_swapexists __ARGS((buf_T *buf, char_u *fname)); | |
3778 | |
3779 /* | |
3780 * Trigger the SwapExists autocommands. | |
3781 * Returns a value for equivalent to do_dialog() (see below): | |
3782 * 0: still need to ask for a choice | |
3783 * 1: open read-only | |
3784 * 2: edit anyway | |
3785 * 3: recover | |
3786 * 4: delete it | |
3787 * 5: quit | |
3788 * 6: abort | |
3789 */ | |
3790 static int | |
3791 do_swapexists(buf, fname) | |
3792 buf_T *buf; | |
3793 char_u *fname; | |
3794 { | |
3795 set_vim_var_string(VV_SWAPNAME, fname, -1); | |
3796 set_vim_var_string(VV_SWAPCHOICE, NULL, -1); | |
3797 | |
3798 /* Trigger SwapExists autocommands with <afile> set to the file being | |
1856 | 3799 * edited. Disallow changing directory here. */ |
3800 ++allbuf_lock; | |
580 | 3801 apply_autocmds(EVENT_SWAPEXISTS, buf->b_fname, NULL, FALSE, NULL); |
1856 | 3802 --allbuf_lock; |
580 | 3803 |
3804 set_vim_var_string(VV_SWAPNAME, NULL, -1); | |
3805 | |
3806 switch (*get_vim_var_str(VV_SWAPCHOICE)) | |
3807 { | |
3808 case 'o': return 1; | |
3809 case 'e': return 2; | |
3810 case 'r': return 3; | |
3811 case 'd': return 4; | |
3812 case 'q': return 5; | |
3813 case 'a': return 6; | |
3814 } | |
3815 | |
3816 return 0; | |
3817 } | |
3818 #endif | |
3819 | |
7 | 3820 /* |
3821 * Find out what name to use for the swap file for buffer 'buf'. | |
3822 * | |
3823 * Several names are tried to find one that does not exist | |
460 | 3824 * Returns the name in allocated memory or NULL. |
7 | 3825 * |
3826 * Note: If BASENAMELEN is not correct, you will get error messages for | |
3827 * not being able to open the swapfile | |
1856 | 3828 * Note: May trigger SwapExists autocmd, pointers may change! |
7 | 3829 */ |
3830 static char_u * | |
3831 findswapname(buf, dirp, old_fname) | |
3832 buf_T *buf; | |
3833 char_u **dirp; /* pointer to list of directories */ | |
3834 char_u *old_fname; /* don't give warning for this file name */ | |
3835 { | |
3836 char_u *fname; | |
3837 int n; | |
3838 char_u *dir_name; | |
3839 #ifdef AMIGA | |
3840 BPTR fh; | |
3841 #endif | |
3842 #ifndef SHORT_FNAME | |
3843 int r; | |
3844 #endif | |
3845 | |
3846 #if !defined(SHORT_FNAME) \ | |
3847 && ((!defined(UNIX) && !defined(OS2)) || defined(ARCHIE)) | |
3848 # define CREATE_DUMMY_FILE | |
3849 FILE *dummyfd = NULL; | |
3850 | |
3851 /* | |
3852 * If we start editing a new file, e.g. "test.doc", which resides on an MSDOS | |
3853 * compatible filesystem, it is possible that the file "test.doc.swp" which we | |
3854 * create will be exactly the same file. To avoid this problem we temporarily | |
3855 * create "test.doc". | |
3856 * Don't do this when the check below for a 8.3 file name is used. | |
3857 */ | |
3858 if (!(buf->b_p_sn || buf->b_shortname) && buf->b_fname != NULL | |
3859 && mch_getperm(buf->b_fname) < 0) | |
3860 dummyfd = mch_fopen((char *)buf->b_fname, "w"); | |
3861 #endif | |
3862 | |
3863 /* | |
3864 * Isolate a directory name from *dirp and put it in dir_name. | |
3865 * First allocate some memory to put the directory name in. | |
3866 */ | |
3867 dir_name = alloc((unsigned)STRLEN(*dirp) + 1); | |
3868 if (dir_name != NULL) | |
3869 (void)copy_option_part(dirp, dir_name, 31000, ","); | |
3870 | |
3871 /* | |
3872 * we try different names until we find one that does not exist yet | |
3873 */ | |
3874 if (dir_name == NULL) /* out of memory */ | |
3875 fname = NULL; | |
3876 else | |
460 | 3877 fname = makeswapname(buf->b_fname, buf->b_ffname, buf, dir_name); |
7 | 3878 |
3879 for (;;) | |
3880 { | |
3881 if (fname == NULL) /* must be out of memory */ | |
3882 break; | |
3883 if ((n = (int)STRLEN(fname)) == 0) /* safety check */ | |
3884 { | |
3885 vim_free(fname); | |
3886 fname = NULL; | |
3887 break; | |
3888 } | |
3889 #if (defined(UNIX) || defined(OS2)) && !defined(ARCHIE) && !defined(SHORT_FNAME) | |
3890 /* | |
3891 * Some systems have a MS-DOS compatible filesystem that use 8.3 character | |
3892 * file names. If this is the first try and the swap file name does not fit in | |
3893 * 8.3, detect if this is the case, set shortname and try again. | |
3894 */ | |
3895 if (fname[n - 2] == 'w' && fname[n - 1] == 'p' | |
3896 && !(buf->b_p_sn || buf->b_shortname)) | |
3897 { | |
3898 char_u *tail; | |
3899 char_u *fname2; | |
3900 struct stat s1, s2; | |
3901 int f1, f2; | |
3902 int created1 = FALSE, created2 = FALSE; | |
3903 int same = FALSE; | |
3904 | |
3905 /* | |
3906 * Check if swapfile name does not fit in 8.3: | |
3907 * It either contains two dots, is longer than 8 chars, or starts | |
3908 * with a dot. | |
3909 */ | |
3910 tail = gettail(buf->b_fname); | |
3911 if ( vim_strchr(tail, '.') != NULL | |
3912 || STRLEN(tail) > (size_t)8 | |
3913 || *gettail(fname) == '.') | |
3914 { | |
3915 fname2 = alloc(n + 2); | |
3916 if (fname2 != NULL) | |
3917 { | |
3918 STRCPY(fname2, fname); | |
3919 /* if fname == "xx.xx.swp", fname2 = "xx.xx.swx" | |
3920 * if fname == ".xx.swp", fname2 = ".xx.swpx" | |
3921 * if fname == "123456789.swp", fname2 = "12345678x.swp" | |
3922 */ | |
3923 if (vim_strchr(tail, '.') != NULL) | |
3924 fname2[n - 1] = 'x'; | |
3925 else if (*gettail(fname) == '.') | |
3926 { | |
3927 fname2[n] = 'x'; | |
3928 fname2[n + 1] = NUL; | |
3929 } | |
3930 else | |
3931 fname2[n - 5] += 1; | |
3932 /* | |
3933 * may need to create the files to be able to use mch_stat() | |
3934 */ | |
3935 f1 = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
3936 if (f1 < 0) | |
3937 { | |
3938 f1 = mch_open_rw((char *)fname, | |
3939 O_RDWR|O_CREAT|O_EXCL|O_EXTRA); | |
3940 #if defined(OS2) | |
3941 if (f1 < 0 && errno == ENOENT) | |
3942 same = TRUE; | |
3943 #endif | |
3944 created1 = TRUE; | |
3945 } | |
3946 if (f1 >= 0) | |
3947 { | |
3948 f2 = mch_open((char *)fname2, O_RDONLY | O_EXTRA, 0); | |
3949 if (f2 < 0) | |
3950 { | |
3951 f2 = mch_open_rw((char *)fname2, | |
3952 O_RDWR|O_CREAT|O_EXCL|O_EXTRA); | |
3953 created2 = TRUE; | |
3954 } | |
3955 if (f2 >= 0) | |
3956 { | |
3957 /* | |
3958 * Both files exist now. If mch_stat() returns the | |
3959 * same device and inode they are the same file. | |
3960 */ | |
3961 if (mch_fstat(f1, &s1) != -1 | |
3962 && mch_fstat(f2, &s2) != -1 | |
3963 && s1.st_dev == s2.st_dev | |
3964 && s1.st_ino == s2.st_ino) | |
3965 same = TRUE; | |
3966 close(f2); | |
3967 if (created2) | |
3968 mch_remove(fname2); | |
3969 } | |
3970 close(f1); | |
3971 if (created1) | |
3972 mch_remove(fname); | |
3973 } | |
3974 vim_free(fname2); | |
3975 if (same) | |
3976 { | |
3977 buf->b_shortname = TRUE; | |
3978 vim_free(fname); | |
460 | 3979 fname = makeswapname(buf->b_fname, buf->b_ffname, |
3980 buf, dir_name); | |
7 | 3981 continue; /* try again with b_shortname set */ |
3982 } | |
3983 } | |
3984 } | |
3985 } | |
3986 #endif | |
3987 /* | |
3988 * check if the swapfile already exists | |
3989 */ | |
3990 if (mch_getperm(fname) < 0) /* it does not exist */ | |
3991 { | |
3992 #ifdef HAVE_LSTAT | |
3993 struct stat sb; | |
3994 | |
3995 /* | |
3996 * Extra security check: When a swap file is a symbolic link, this | |
3997 * is most likely a symlink attack. | |
3998 */ | |
3999 if (mch_lstat((char *)fname, &sb) < 0) | |
4000 #else | |
4001 # ifdef AMIGA | |
4002 fh = Open((UBYTE *)fname, (long)MODE_NEWFILE); | |
4003 /* | |
4004 * on the Amiga mch_getperm() will return -1 when the file exists | |
4005 * but is being used by another program. This happens if you edit | |
4006 * a file twice. | |
4007 */ | |
4008 if (fh != (BPTR)NULL) /* can open file, OK */ | |
4009 { | |
4010 Close(fh); | |
4011 mch_remove(fname); | |
4012 break; | |
4013 } | |
4014 if (IoErr() != ERROR_OBJECT_IN_USE | |
4015 && IoErr() != ERROR_OBJECT_EXISTS) | |
4016 # endif | |
4017 #endif | |
4018 break; | |
4019 } | |
4020 | |
4021 /* | |
4022 * A file name equal to old_fname is OK to use. | |
4023 */ | |
4024 if (old_fname != NULL && fnamecmp(fname, old_fname) == 0) | |
4025 break; | |
4026 | |
4027 /* | |
4028 * get here when file already exists | |
4029 */ | |
4030 if (fname[n - 2] == 'w' && fname[n - 1] == 'p') /* first try */ | |
4031 { | |
4032 #ifndef SHORT_FNAME | |
4033 /* | |
4034 * on MS-DOS compatible filesystems (e.g. messydos) file.doc.swp | |
4035 * and file.doc are the same file. To guess if this problem is | |
4036 * present try if file.doc.swx exists. If it does, we set | |
4037 * buf->b_shortname and try file_doc.swp (dots replaced by | |
4038 * underscores for this file), and try again. If it doesn't we | |
4039 * assume that "file.doc.swp" already exists. | |
4040 */ | |
4041 if (!(buf->b_p_sn || buf->b_shortname)) /* not tried yet */ | |
4042 { | |
4043 fname[n - 1] = 'x'; | |
4044 r = mch_getperm(fname); /* try "file.swx" */ | |
4045 fname[n - 1] = 'p'; | |
4046 if (r >= 0) /* "file.swx" seems to exist */ | |
4047 { | |
4048 buf->b_shortname = TRUE; | |
4049 vim_free(fname); | |
460 | 4050 fname = makeswapname(buf->b_fname, buf->b_ffname, |
4051 buf, dir_name); | |
7 | 4052 continue; /* try again with '.' replaced with '_' */ |
4053 } | |
4054 } | |
4055 #endif | |
4056 /* | |
4057 * If we get here the ".swp" file really exists. | |
4058 * Give an error message, unless recovering, no file name, we are | |
4059 * viewing a help file or when the path of the file is different | |
4060 * (happens when all .swp files are in one directory). | |
4061 */ | |
43 | 4062 if (!recoverymode && buf->b_fname != NULL |
4063 && !buf->b_help && !(buf->b_flags & BF_DUMMY)) | |
7 | 4064 { |
4065 int fd; | |
4066 struct block0 b0; | |
4067 int differ = FALSE; | |
4068 | |
4069 /* | |
4070 * Try to read block 0 from the swap file to get the original | |
4071 * file name (and inode number). | |
4072 */ | |
4073 fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
4074 if (fd >= 0) | |
4075 { | |
4076 if (read(fd, (char *)&b0, sizeof(b0)) == sizeof(b0)) | |
4077 { | |
4078 /* | |
39 | 4079 * If the swapfile has the same directory as the |
4080 * buffer don't compare the directory names, they can | |
4081 * have a different mountpoint. | |
7 | 4082 */ |
39 | 4083 if (b0.b0_flags & B0_SAME_DIR) |
4084 { | |
4085 if (fnamecmp(gettail(buf->b_ffname), | |
4086 gettail(b0.b0_fname)) != 0 | |
4087 || !same_directory(fname, buf->b_ffname)) | |
594 | 4088 { |
4089 #ifdef CHECK_INODE | |
4090 /* Symlinks may point to the same file even | |
4091 * when the name differs, need to check the | |
4092 * inode too. */ | |
4093 expand_env(b0.b0_fname, NameBuff, MAXPATHL); | |
4094 if (fnamecmp_ino(buf->b_ffname, NameBuff, | |
4095 char_to_long(b0.b0_ino))) | |
4096 #endif | |
4097 differ = TRUE; | |
4098 } | |
39 | 4099 } |
4100 else | |
4101 { | |
4102 /* | |
4103 * The name in the swap file may be | |
4104 * "~user/path/file". Expand it first. | |
4105 */ | |
4106 expand_env(b0.b0_fname, NameBuff, MAXPATHL); | |
7 | 4107 #ifdef CHECK_INODE |
39 | 4108 if (fnamecmp_ino(buf->b_ffname, NameBuff, |
594 | 4109 char_to_long(b0.b0_ino))) |
39 | 4110 differ = TRUE; |
7 | 4111 #else |
39 | 4112 if (fnamecmp(NameBuff, buf->b_ffname) != 0) |
4113 differ = TRUE; | |
7 | 4114 #endif |
39 | 4115 } |
7 | 4116 } |
4117 close(fd); | |
4118 } | |
4119 #ifdef RISCOS | |
4120 else | |
4121 /* Can't open swap file, though it does exist. | |
4122 * Assume that the user is editing two files with | |
4123 * the same name in different directories. No error. | |
4124 */ | |
4125 differ = TRUE; | |
4126 #endif | |
4127 | |
4128 /* give the ATTENTION message when there is an old swap file | |
4129 * for the current file, and the buffer was not recovered. */ | |
4130 if (differ == FALSE && !(curbuf->b_flags & BF_RECOVERED) | |
4131 && vim_strchr(p_shm, SHM_ATTENTION) == NULL) | |
4132 { | |
580 | 4133 #if defined(HAS_SWAP_EXISTS_ACTION) |
4134 int choice = 0; | |
4135 #endif | |
7 | 4136 #ifdef CREATE_DUMMY_FILE |
4137 int did_use_dummy = FALSE; | |
4138 | |
4139 /* Avoid getting a warning for the file being created | |
4140 * outside of Vim, it was created at the start of this | |
4141 * function. Delete the file now, because Vim might exit | |
4142 * here if the window is closed. */ | |
4143 if (dummyfd != NULL) | |
4144 { | |
4145 fclose(dummyfd); | |
4146 dummyfd = NULL; | |
4147 mch_remove(buf->b_fname); | |
4148 did_use_dummy = TRUE; | |
4149 } | |
4150 #endif | |
4151 | |
4152 #if (defined(UNIX) || defined(__EMX__) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)) | |
4153 process_still_running = FALSE; | |
4154 #endif | |
580 | 4155 #ifdef FEAT_AUTOCMD |
4156 /* | |
4157 * If there is an SwapExists autocommand and we can handle | |
4158 * the response, trigger it. It may return 0 to ask the | |
4159 * user anyway. | |
4160 */ | |
4161 if (swap_exists_action != SEA_NONE | |
4162 && has_autocmd(EVENT_SWAPEXISTS, buf->b_fname, buf)) | |
4163 choice = do_swapexists(buf, fname); | |
4164 | |
4165 if (choice == 0) | |
4166 #endif | |
7 | 4167 { |
580 | 4168 #ifdef FEAT_GUI |
4169 /* If we are supposed to start the GUI but it wasn't | |
4170 * completely started yet, start it now. This makes | |
4171 * the messages displayed in the Vim window when | |
4172 * loading a session from the .gvimrc file. */ | |
4173 if (gui.starting && !gui.in_use) | |
4174 gui_start(); | |
4175 #endif | |
4176 /* Show info about the existing swap file. */ | |
4177 attention_message(buf, fname); | |
4178 | |
4179 /* We don't want a 'q' typed at the more-prompt | |
4180 * interrupt loading a file. */ | |
4181 got_int = FALSE; | |
7 | 4182 } |
4183 | |
4184 #if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) | |
580 | 4185 if (swap_exists_action != SEA_NONE && choice == 0) |
7 | 4186 { |
4187 char_u *name; | |
4188 | |
4189 name = alloc((unsigned)(STRLEN(fname) | |
4190 + STRLEN(_("Swap file \"")) | |
4191 + STRLEN(_("\" already exists!")) + 5)); | |
4192 if (name != NULL) | |
4193 { | |
4194 STRCPY(name, _("Swap file \"")); | |
4195 home_replace(NULL, fname, name + STRLEN(name), | |
4196 1000, TRUE); | |
4197 STRCAT(name, _("\" already exists!")); | |
4198 } | |
580 | 4199 choice = do_dialog(VIM_WARNING, |
7 | 4200 (char_u *)_("VIM - ATTENTION"), |
4201 name == NULL | |
4202 ? (char_u *)_("Swap file already exists!") | |
4203 : name, | |
4204 # if defined(UNIX) || defined(__EMX__) || defined(VMS) | |
4205 process_still_running | |
4206 ? (char_u *)_("&Open Read-Only\n&Edit anyway\n&Recover\n&Quit\n&Abort") : | |
4207 # endif | |
580 | 4208 (char_u *)_("&Open Read-Only\n&Edit anyway\n&Recover\n&Delete it\n&Quit\n&Abort"), 1, NULL); |
4209 | |
4210 # if defined(UNIX) || defined(__EMX__) || defined(VMS) | |
4211 if (process_still_running && choice >= 4) | |
4212 choice++; /* Skip missing "Delete it" button */ | |
4213 # endif | |
4214 vim_free(name); | |
4215 | |
4216 /* pretend screen didn't scroll, need redraw anyway */ | |
4217 msg_scrolled = 0; | |
4218 redraw_all_later(NOT_VALID); | |
4219 } | |
4220 #endif | |
4221 | |
4222 #if defined(HAS_SWAP_EXISTS_ACTION) | |
4223 if (choice > 0) | |
4224 { | |
4225 switch (choice) | |
7 | 4226 { |
4227 case 1: | |
4228 buf->b_p_ro = TRUE; | |
4229 break; | |
4230 case 2: | |
4231 break; | |
4232 case 3: | |
4233 swap_exists_action = SEA_RECOVER; | |
4234 break; | |
4235 case 4: | |
580 | 4236 mch_remove(fname); |
4237 break; | |
4238 case 5: | |
7 | 4239 swap_exists_action = SEA_QUIT; |
4240 break; | |
580 | 4241 case 6: |
7 | 4242 swap_exists_action = SEA_QUIT; |
4243 got_int = TRUE; | |
4244 break; | |
4245 } | |
4246 | |
4247 /* If the file was deleted this fname can be used. */ | |
4248 if (mch_getperm(fname) < 0) | |
4249 break; | |
4250 } | |
4251 else | |
4252 #endif | |
4253 { | |
4254 MSG_PUTS("\n"); | |
625 | 4255 if (msg_silent == 0) |
4256 /* call wait_return() later */ | |
4257 need_wait_return = TRUE; | |
7 | 4258 } |
4259 | |
4260 #ifdef CREATE_DUMMY_FILE | |
4261 /* Going to try another name, need the dummy file again. */ | |
4262 if (did_use_dummy) | |
4263 dummyfd = mch_fopen((char *)buf->b_fname, "w"); | |
4264 #endif | |
4265 } | |
4266 } | |
4267 } | |
4268 | |
4269 /* | |
4270 * Change the ".swp" extension to find another file that can be used. | |
4271 * First decrement the last char: ".swo", ".swn", etc. | |
4272 * If that still isn't enough decrement the last but one char: ".svz" | |
9 | 4273 * Can happen when editing many "No Name" buffers. |
7 | 4274 */ |
4275 if (fname[n - 1] == 'a') /* ".s?a" */ | |
4276 { | |
4277 if (fname[n - 2] == 'a') /* ".saa": tried enough, give up */ | |
4278 { | |
4279 EMSG(_("E326: Too many swap files found")); | |
4280 vim_free(fname); | |
4281 fname = NULL; | |
4282 break; | |
4283 } | |
4284 --fname[n - 2]; /* ".svz", ".suz", etc. */ | |
4285 fname[n - 1] = 'z' + 1; | |
4286 } | |
4287 --fname[n - 1]; /* ".swo", ".swn", etc. */ | |
4288 } | |
4289 | |
4290 vim_free(dir_name); | |
4291 #ifdef CREATE_DUMMY_FILE | |
4292 if (dummyfd != NULL) /* file has been created temporarily */ | |
4293 { | |
4294 fclose(dummyfd); | |
4295 mch_remove(buf->b_fname); | |
4296 } | |
4297 #endif | |
4298 return fname; | |
4299 } | |
4300 | |
4301 static int | |
4302 b0_magic_wrong(b0p) | |
4303 ZERO_BL *b0p; | |
4304 { | |
4305 return (b0p->b0_magic_long != (long)B0_MAGIC_LONG | |
4306 || b0p->b0_magic_int != (int)B0_MAGIC_INT | |
4307 || b0p->b0_magic_short != (short)B0_MAGIC_SHORT | |
4308 || b0p->b0_magic_char != B0_MAGIC_CHAR); | |
4309 } | |
4310 | |
4311 #ifdef CHECK_INODE | |
4312 /* | |
4313 * Compare current file name with file name from swap file. | |
4314 * Try to use inode numbers when possible. | |
4315 * Return non-zero when files are different. | |
4316 * | |
4317 * When comparing file names a few things have to be taken into consideration: | |
4318 * - When working over a network the full path of a file depends on the host. | |
4319 * We check the inode number if possible. It is not 100% reliable though, | |
4320 * because the device number cannot be used over a network. | |
4321 * - When a file does not exist yet (editing a new file) there is no inode | |
4322 * number. | |
4323 * - The file name in a swap file may not be valid on the current host. The | |
4324 * "~user" form is used whenever possible to avoid this. | |
4325 * | |
4326 * This is getting complicated, let's make a table: | |
4327 * | |
4328 * ino_c ino_s fname_c fname_s differ = | |
4329 * | |
4330 * both files exist -> compare inode numbers: | |
4331 * != 0 != 0 X X ino_c != ino_s | |
4332 * | |
4333 * inode number(s) unknown, file names available -> compare file names | |
4334 * == 0 X OK OK fname_c != fname_s | |
4335 * X == 0 OK OK fname_c != fname_s | |
4336 * | |
4337 * current file doesn't exist, file for swap file exist, file name(s) not | |
4338 * available -> probably different | |
4339 * == 0 != 0 FAIL X TRUE | |
4340 * == 0 != 0 X FAIL TRUE | |
4341 * | |
4342 * current file exists, inode for swap unknown, file name(s) not | |
4343 * available -> probably different | |
4344 * != 0 == 0 FAIL X TRUE | |
4345 * != 0 == 0 X FAIL TRUE | |
4346 * | |
4347 * current file doesn't exist, inode for swap unknown, one file name not | |
4348 * available -> probably different | |
4349 * == 0 == 0 FAIL OK TRUE | |
4350 * == 0 == 0 OK FAIL TRUE | |
4351 * | |
4352 * current file doesn't exist, inode for swap unknown, both file names not | |
4353 * available -> probably same file | |
4354 * == 0 == 0 FAIL FAIL FALSE | |
4355 * | |
4356 * Note that when the ino_t is 64 bits, only the last 32 will be used. This | |
4357 * can't be changed without making the block 0 incompatible with 32 bit | |
4358 * versions. | |
4359 */ | |
4360 | |
4361 static int | |
4362 fnamecmp_ino(fname_c, fname_s, ino_block0) | |
4363 char_u *fname_c; /* current file name */ | |
4364 char_u *fname_s; /* file name from swap file */ | |
4365 long ino_block0; | |
4366 { | |
4367 struct stat st; | |
4368 ino_t ino_c = 0; /* ino of current file */ | |
4369 ino_t ino_s; /* ino of file from swap file */ | |
4370 char_u buf_c[MAXPATHL]; /* full path of fname_c */ | |
4371 char_u buf_s[MAXPATHL]; /* full path of fname_s */ | |
4372 int retval_c; /* flag: buf_c valid */ | |
4373 int retval_s; /* flag: buf_s valid */ | |
4374 | |
4375 if (mch_stat((char *)fname_c, &st) == 0) | |
4376 ino_c = (ino_t)st.st_ino; | |
4377 | |
4378 /* | |
4379 * First we try to get the inode from the file name, because the inode in | |
4380 * the swap file may be outdated. If that fails (e.g. this path is not | |
4381 * valid on this machine), use the inode from block 0. | |
4382 */ | |
4383 if (mch_stat((char *)fname_s, &st) == 0) | |
4384 ino_s = (ino_t)st.st_ino; | |
4385 else | |
4386 ino_s = (ino_t)ino_block0; | |
4387 | |
4388 if (ino_c && ino_s) | |
4389 return (ino_c != ino_s); | |
4390 | |
4391 /* | |
4392 * One of the inode numbers is unknown, try a forced vim_FullName() and | |
4393 * compare the file names. | |
4394 */ | |
4395 retval_c = vim_FullName(fname_c, buf_c, MAXPATHL, TRUE); | |
4396 retval_s = vim_FullName(fname_s, buf_s, MAXPATHL, TRUE); | |
4397 if (retval_c == OK && retval_s == OK) | |
4398 return (STRCMP(buf_c, buf_s) != 0); | |
4399 | |
4400 /* | |
4401 * Can't compare inodes or file names, guess that the files are different, | |
4402 * unless both appear not to exist at all. | |
4403 */ | |
4404 if (ino_s == 0 && ino_c == 0 && retval_c == FAIL && retval_s == FAIL) | |
4405 return FALSE; | |
4406 return TRUE; | |
4407 } | |
4408 #endif /* CHECK_INODE */ | |
4409 | |
4410 /* | |
4411 * Move a long integer into a four byte character array. | |
4412 * Used for machine independency in block zero. | |
4413 */ | |
4414 static void | |
4415 long_to_char(n, s) | |
4416 long n; | |
4417 char_u *s; | |
4418 { | |
4419 s[0] = (char_u)(n & 0xff); | |
4420 n = (unsigned)n >> 8; | |
4421 s[1] = (char_u)(n & 0xff); | |
4422 n = (unsigned)n >> 8; | |
4423 s[2] = (char_u)(n & 0xff); | |
4424 n = (unsigned)n >> 8; | |
4425 s[3] = (char_u)(n & 0xff); | |
4426 } | |
4427 | |
4428 static long | |
4429 char_to_long(s) | |
4430 char_u *s; | |
4431 { | |
4432 long retval; | |
4433 | |
4434 retval = s[3]; | |
4435 retval <<= 8; | |
4436 retval |= s[2]; | |
4437 retval <<= 8; | |
4438 retval |= s[1]; | |
4439 retval <<= 8; | |
4440 retval |= s[0]; | |
4441 | |
4442 return retval; | |
4443 } | |
4444 | |
39 | 4445 /* |
4446 * Set the flags in the first block of the swap file: | |
4447 * - file is modified or not: buf->b_changed | |
4448 * - 'fileformat' | |
4449 * - 'fileencoding' | |
4450 */ | |
7 | 4451 void |
39 | 4452 ml_setflags(buf) |
7 | 4453 buf_T *buf; |
4454 { | |
4455 bhdr_T *hp; | |
4456 ZERO_BL *b0p; | |
4457 | |
4458 if (!buf->b_ml.ml_mfp) | |
4459 return; | |
4460 for (hp = buf->b_ml.ml_mfp->mf_used_last; hp != NULL; hp = hp->bh_prev) | |
4461 { | |
4462 if (hp->bh_bnum == 0) | |
4463 { | |
4464 b0p = (ZERO_BL *)(hp->bh_data); | |
39 | 4465 b0p->b0_dirty = buf->b_changed ? B0_DIRTY : 0; |
4466 b0p->b0_flags = (b0p->b0_flags & ~B0_FF_MASK) | |
4467 | (get_fileformat(buf) + 1); | |
4468 #ifdef FEAT_MBYTE | |
4469 add_b0_fenc(b0p, buf); | |
4470 #endif | |
7 | 4471 hp->bh_flags |= BH_DIRTY; |
4472 mf_sync(buf->b_ml.ml_mfp, MFS_ZERO); | |
4473 break; | |
4474 } | |
4475 } | |
4476 } | |
4477 | |
4478 #if defined(FEAT_BYTEOFF) || defined(PROTO) | |
4479 | |
4480 #define MLCS_MAXL 800 /* max no of lines in chunk */ | |
4481 #define MLCS_MINL 400 /* should be half of MLCS_MAXL */ | |
4482 | |
4483 /* | |
4484 * Keep information for finding byte offset of a line, updtytpe may be one of: | |
4485 * ML_CHNK_ADDLINE: Add len to parent chunk, possibly splitting it | |
4486 * Careful: ML_CHNK_ADDLINE may cause ml_find_line() to be called. | |
4487 * ML_CHNK_DELLINE: Subtract len from parent chunk, possibly deleting it | |
4488 * ML_CHNK_UPDLINE: Add len to parent chunk, as a signed entity. | |
4489 */ | |
4490 static void | |
4491 ml_updatechunk(buf, line, len, updtype) | |
4492 buf_T *buf; | |
4493 linenr_T line; | |
4494 long len; | |
4495 int updtype; | |
4496 { | |
4497 static buf_T *ml_upd_lastbuf = NULL; | |
4498 static linenr_T ml_upd_lastline; | |
4499 static linenr_T ml_upd_lastcurline; | |
4500 static int ml_upd_lastcurix; | |
4501 | |
4502 linenr_T curline = ml_upd_lastcurline; | |
4503 int curix = ml_upd_lastcurix; | |
4504 long size; | |
4505 chunksize_T *curchnk; | |
4506 int rest; | |
4507 bhdr_T *hp; | |
4508 DATA_BL *dp; | |
4509 | |
4510 if (buf->b_ml.ml_usedchunks == -1 || len == 0) | |
4511 return; | |
4512 if (buf->b_ml.ml_chunksize == NULL) | |
4513 { | |
4514 buf->b_ml.ml_chunksize = (chunksize_T *) | |
4515 alloc((unsigned)sizeof(chunksize_T) * 100); | |
4516 if (buf->b_ml.ml_chunksize == NULL) | |
4517 { | |
4518 buf->b_ml.ml_usedchunks = -1; | |
4519 return; | |
4520 } | |
4521 buf->b_ml.ml_numchunks = 100; | |
4522 buf->b_ml.ml_usedchunks = 1; | |
4523 buf->b_ml.ml_chunksize[0].mlcs_numlines = 1; | |
4524 buf->b_ml.ml_chunksize[0].mlcs_totalsize = 1; | |
4525 } | |
4526 | |
4527 if (updtype == ML_CHNK_UPDLINE && buf->b_ml.ml_line_count == 1) | |
4528 { | |
4529 /* | |
4530 * First line in empty buffer from ml_flush_line() -- reset | |
4531 */ | |
4532 buf->b_ml.ml_usedchunks = 1; | |
4533 buf->b_ml.ml_chunksize[0].mlcs_numlines = 1; | |
4534 buf->b_ml.ml_chunksize[0].mlcs_totalsize = | |
4535 (long)STRLEN(buf->b_ml.ml_line_ptr) + 1; | |
4536 return; | |
4537 } | |
4538 | |
4539 /* | |
4540 * Find chunk that our line belongs to, curline will be at start of the | |
4541 * chunk. | |
4542 */ | |
4543 if (buf != ml_upd_lastbuf || line != ml_upd_lastline + 1 | |
4544 || updtype != ML_CHNK_ADDLINE) | |
4545 { | |
4546 for (curline = 1, curix = 0; | |
4547 curix < buf->b_ml.ml_usedchunks - 1 | |
4548 && line >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
4549 curix++) | |
4550 { | |
4551 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
4552 } | |
4553 } | |
4554 else if (line >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines | |
4555 && curix < buf->b_ml.ml_usedchunks - 1) | |
4556 { | |
4557 /* Adjust cached curix & curline */ | |
4558 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
4559 curix++; | |
4560 } | |
4561 curchnk = buf->b_ml.ml_chunksize + curix; | |
4562 | |
4563 if (updtype == ML_CHNK_DELLINE) | |
1030 | 4564 len = -len; |
7 | 4565 curchnk->mlcs_totalsize += len; |
4566 if (updtype == ML_CHNK_ADDLINE) | |
4567 { | |
4568 curchnk->mlcs_numlines++; | |
4569 | |
4570 /* May resize here so we don't have to do it in both cases below */ | |
4571 if (buf->b_ml.ml_usedchunks + 1 >= buf->b_ml.ml_numchunks) | |
4572 { | |
4573 buf->b_ml.ml_numchunks = buf->b_ml.ml_numchunks * 3 / 2; | |
4574 buf->b_ml.ml_chunksize = (chunksize_T *) | |
4575 vim_realloc(buf->b_ml.ml_chunksize, | |
4576 sizeof(chunksize_T) * buf->b_ml.ml_numchunks); | |
4577 if (buf->b_ml.ml_chunksize == NULL) | |
4578 { | |
4579 /* Hmmmm, Give up on offset for this buffer */ | |
4580 buf->b_ml.ml_usedchunks = -1; | |
4581 return; | |
4582 } | |
4583 } | |
4584 | |
4585 if (buf->b_ml.ml_chunksize[curix].mlcs_numlines >= MLCS_MAXL) | |
4586 { | |
4587 int count; /* number of entries in block */ | |
4588 int idx; | |
4589 int text_end; | |
4590 int linecnt; | |
4591 | |
4592 mch_memmove(buf->b_ml.ml_chunksize + curix + 1, | |
4593 buf->b_ml.ml_chunksize + curix, | |
4594 (buf->b_ml.ml_usedchunks - curix) * | |
4595 sizeof(chunksize_T)); | |
1855 | 4596 /* Compute length of first half of lines in the split chunk */ |
7 | 4597 size = 0; |
4598 linecnt = 0; | |
4599 while (curline < buf->b_ml.ml_line_count | |
4600 && linecnt < MLCS_MINL) | |
4601 { | |
4602 if ((hp = ml_find_line(buf, curline, ML_FIND)) == NULL) | |
4603 { | |
4604 buf->b_ml.ml_usedchunks = -1; | |
4605 return; | |
4606 } | |
4607 dp = (DATA_BL *)(hp->bh_data); | |
4608 count = (long)(buf->b_ml.ml_locked_high) - | |
4609 (long)(buf->b_ml.ml_locked_low) + 1; | |
4610 idx = curline - buf->b_ml.ml_locked_low; | |
4611 curline = buf->b_ml.ml_locked_high + 1; | |
4612 if (idx == 0)/* first line in block, text at the end */ | |
4613 text_end = dp->db_txt_end; | |
4614 else | |
4615 text_end = ((dp->db_index[idx - 1]) & DB_INDEX_MASK); | |
4616 /* Compute index of last line to use in this MEMLINE */ | |
4617 rest = count - idx; | |
4618 if (linecnt + rest > MLCS_MINL) | |
4619 { | |
4620 idx += MLCS_MINL - linecnt - 1; | |
4621 linecnt = MLCS_MINL; | |
4622 } | |
4623 else | |
4624 { | |
4625 idx = count - 1; | |
4626 linecnt += rest; | |
4627 } | |
4628 size += text_end - ((dp->db_index[idx]) & DB_INDEX_MASK); | |
4629 } | |
4630 buf->b_ml.ml_chunksize[curix].mlcs_numlines = linecnt; | |
4631 buf->b_ml.ml_chunksize[curix + 1].mlcs_numlines -= linecnt; | |
4632 buf->b_ml.ml_chunksize[curix].mlcs_totalsize = size; | |
4633 buf->b_ml.ml_chunksize[curix + 1].mlcs_totalsize -= size; | |
4634 buf->b_ml.ml_usedchunks++; | |
4635 ml_upd_lastbuf = NULL; /* Force recalc of curix & curline */ | |
4636 return; | |
4637 } | |
4638 else if (buf->b_ml.ml_chunksize[curix].mlcs_numlines >= MLCS_MINL | |
4639 && curix == buf->b_ml.ml_usedchunks - 1 | |
4640 && buf->b_ml.ml_line_count - line <= 1) | |
4641 { | |
4642 /* | |
4643 * We are in the last chunk and it is cheap to crate a new one | |
4644 * after this. Do it now to avoid the loop above later on | |
4645 */ | |
4646 curchnk = buf->b_ml.ml_chunksize + curix + 1; | |
4647 buf->b_ml.ml_usedchunks++; | |
4648 if (line == buf->b_ml.ml_line_count) | |
4649 { | |
4650 curchnk->mlcs_numlines = 0; | |
4651 curchnk->mlcs_totalsize = 0; | |
4652 } | |
4653 else | |
4654 { | |
4655 /* | |
4656 * Line is just prior to last, move count for last | |
4657 * This is the common case when loading a new file | |
4658 */ | |
4659 hp = ml_find_line(buf, buf->b_ml.ml_line_count, ML_FIND); | |
4660 if (hp == NULL) | |
4661 { | |
4662 buf->b_ml.ml_usedchunks = -1; | |
4663 return; | |
4664 } | |
4665 dp = (DATA_BL *)(hp->bh_data); | |
4666 if (dp->db_line_count == 1) | |
4667 rest = dp->db_txt_end - dp->db_txt_start; | |
4668 else | |
4669 rest = | |
4670 ((dp->db_index[dp->db_line_count - 2]) & DB_INDEX_MASK) | |
4671 - dp->db_txt_start; | |
4672 curchnk->mlcs_totalsize = rest; | |
4673 curchnk->mlcs_numlines = 1; | |
4674 curchnk[-1].mlcs_totalsize -= rest; | |
4675 curchnk[-1].mlcs_numlines -= 1; | |
4676 } | |
4677 } | |
4678 } | |
4679 else if (updtype == ML_CHNK_DELLINE) | |
4680 { | |
4681 curchnk->mlcs_numlines--; | |
4682 ml_upd_lastbuf = NULL; /* Force recalc of curix & curline */ | |
4683 if (curix < (buf->b_ml.ml_usedchunks - 1) | |
4684 && (curchnk->mlcs_numlines + curchnk[1].mlcs_numlines) | |
4685 <= MLCS_MINL) | |
4686 { | |
4687 curix++; | |
4688 curchnk = buf->b_ml.ml_chunksize + curix; | |
4689 } | |
4690 else if (curix == 0 && curchnk->mlcs_numlines <= 0) | |
4691 { | |
4692 buf->b_ml.ml_usedchunks--; | |
4693 mch_memmove(buf->b_ml.ml_chunksize, buf->b_ml.ml_chunksize + 1, | |
4694 buf->b_ml.ml_usedchunks * sizeof(chunksize_T)); | |
4695 return; | |
4696 } | |
4697 else if (curix == 0 || (curchnk->mlcs_numlines > 10 | |
4698 && (curchnk->mlcs_numlines + curchnk[-1].mlcs_numlines) | |
4699 > MLCS_MINL)) | |
4700 { | |
4701 return; | |
4702 } | |
4703 | |
4704 /* Collapse chunks */ | |
4705 curchnk[-1].mlcs_numlines += curchnk->mlcs_numlines; | |
4706 curchnk[-1].mlcs_totalsize += curchnk->mlcs_totalsize; | |
4707 buf->b_ml.ml_usedchunks--; | |
4708 if (curix < buf->b_ml.ml_usedchunks) | |
4709 { | |
4710 mch_memmove(buf->b_ml.ml_chunksize + curix, | |
4711 buf->b_ml.ml_chunksize + curix + 1, | |
4712 (buf->b_ml.ml_usedchunks - curix) * | |
4713 sizeof(chunksize_T)); | |
4714 } | |
4715 return; | |
4716 } | |
4717 ml_upd_lastbuf = buf; | |
4718 ml_upd_lastline = line; | |
4719 ml_upd_lastcurline = curline; | |
4720 ml_upd_lastcurix = curix; | |
4721 } | |
4722 | |
4723 /* | |
4724 * Find offset for line or line with offset. | |
169 | 4725 * Find line with offset if "lnum" is 0; return remaining offset in offp |
4726 * Find offset of line if "lnum" > 0 | |
7 | 4727 * return -1 if information is not available |
4728 */ | |
4729 long | |
169 | 4730 ml_find_line_or_offset(buf, lnum, offp) |
7 | 4731 buf_T *buf; |
169 | 4732 linenr_T lnum; |
7 | 4733 long *offp; |
4734 { | |
4735 linenr_T curline; | |
4736 int curix; | |
4737 long size; | |
4738 bhdr_T *hp; | |
4739 DATA_BL *dp; | |
4740 int count; /* number of entries in block */ | |
4741 int idx; | |
4742 int start_idx; | |
4743 int text_end; | |
4744 long offset; | |
4745 int len; | |
4746 int ffdos = (get_fileformat(buf) == EOL_DOS); | |
4747 int extra = 0; | |
4748 | |
169 | 4749 /* take care of cached line first */ |
4750 ml_flush_line(curbuf); | |
4751 | |
7 | 4752 if (buf->b_ml.ml_usedchunks == -1 |
4753 || buf->b_ml.ml_chunksize == NULL | |
169 | 4754 || lnum < 0) |
7 | 4755 return -1; |
4756 | |
4757 if (offp == NULL) | |
4758 offset = 0; | |
4759 else | |
4760 offset = *offp; | |
169 | 4761 if (lnum == 0 && offset <= 0) |
7 | 4762 return 1; /* Not a "find offset" and offset 0 _must_ be in line 1 */ |
4763 /* | |
4764 * Find the last chunk before the one containing our line. Last chunk is | |
4765 * special because it will never qualify | |
4766 */ | |
4767 curline = 1; | |
4768 curix = size = 0; | |
4769 while (curix < buf->b_ml.ml_usedchunks - 1 | |
169 | 4770 && ((lnum != 0 |
4771 && lnum >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines) | |
7 | 4772 || (offset != 0 |
4773 && offset > size + buf->b_ml.ml_chunksize[curix].mlcs_totalsize | |
4774 + ffdos * buf->b_ml.ml_chunksize[curix].mlcs_numlines))) | |
4775 { | |
4776 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
4777 size += buf->b_ml.ml_chunksize[curix].mlcs_totalsize; | |
4778 if (offset && ffdos) | |
4779 size += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
4780 curix++; | |
4781 } | |
4782 | |
169 | 4783 while ((lnum != 0 && curline < lnum) || (offset != 0 && size < offset)) |
7 | 4784 { |
4785 if (curline > buf->b_ml.ml_line_count | |
4786 || (hp = ml_find_line(buf, curline, ML_FIND)) == NULL) | |
4787 return -1; | |
4788 dp = (DATA_BL *)(hp->bh_data); | |
4789 count = (long)(buf->b_ml.ml_locked_high) - | |
4790 (long)(buf->b_ml.ml_locked_low) + 1; | |
4791 start_idx = idx = curline - buf->b_ml.ml_locked_low; | |
4792 if (idx == 0)/* first line in block, text at the end */ | |
4793 text_end = dp->db_txt_end; | |
4794 else | |
4795 text_end = ((dp->db_index[idx - 1]) & DB_INDEX_MASK); | |
4796 /* Compute index of last line to use in this MEMLINE */ | |
169 | 4797 if (lnum != 0) |
7 | 4798 { |
169 | 4799 if (curline + (count - idx) >= lnum) |
4800 idx += lnum - curline - 1; | |
7 | 4801 else |
4802 idx = count - 1; | |
4803 } | |
4804 else | |
4805 { | |
4806 extra = 0; | |
4807 while (offset >= size | |
4808 + text_end - (int)((dp->db_index[idx]) & DB_INDEX_MASK) | |
4809 + ffdos) | |
4810 { | |
4811 if (ffdos) | |
4812 size++; | |
4813 if (idx == count - 1) | |
4814 { | |
4815 extra = 1; | |
4816 break; | |
4817 } | |
4818 idx++; | |
4819 } | |
4820 } | |
4821 len = text_end - ((dp->db_index[idx]) & DB_INDEX_MASK); | |
4822 size += len; | |
4823 if (offset != 0 && size >= offset) | |
4824 { | |
4825 if (size + ffdos == offset) | |
4826 *offp = 0; | |
4827 else if (idx == start_idx) | |
4828 *offp = offset - size + len; | |
4829 else | |
4830 *offp = offset - size + len | |
4831 - (text_end - ((dp->db_index[idx - 1]) & DB_INDEX_MASK)); | |
4832 curline += idx - start_idx + extra; | |
4833 if (curline > buf->b_ml.ml_line_count) | |
4834 return -1; /* exactly one byte beyond the end */ | |
4835 return curline; | |
4836 } | |
4837 curline = buf->b_ml.ml_locked_high + 1; | |
4838 } | |
4839 | |
169 | 4840 if (lnum != 0) |
20 | 4841 { |
4842 /* Count extra CR characters. */ | |
4843 if (ffdos) | |
169 | 4844 size += lnum - 1; |
20 | 4845 |
4846 /* Don't count the last line break if 'bin' and 'noeol'. */ | |
4847 if (buf->b_p_bin && !buf->b_p_eol) | |
4848 size -= ffdos + 1; | |
4849 } | |
4850 | |
7 | 4851 return size; |
4852 } | |
4853 | |
4854 /* | |
4855 * Goto byte in buffer with offset 'cnt'. | |
4856 */ | |
4857 void | |
4858 goto_byte(cnt) | |
4859 long cnt; | |
4860 { | |
4861 long boff = cnt; | |
4862 linenr_T lnum; | |
4863 | |
4864 ml_flush_line(curbuf); /* cached line may be dirty */ | |
4865 setpcmark(); | |
4866 if (boff) | |
4867 --boff; | |
4868 lnum = ml_find_line_or_offset(curbuf, (linenr_T)0, &boff); | |
4869 if (lnum < 1) /* past the end */ | |
4870 { | |
4871 curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; | |
4872 curwin->w_curswant = MAXCOL; | |
4873 coladvance((colnr_T)MAXCOL); | |
4874 } | |
4875 else | |
4876 { | |
4877 curwin->w_cursor.lnum = lnum; | |
4878 curwin->w_cursor.col = (colnr_T)boff; | |
572 | 4879 # ifdef FEAT_VIRTUALEDIT |
4880 curwin->w_cursor.coladd = 0; | |
4881 # endif | |
7 | 4882 curwin->w_set_curswant = TRUE; |
4883 } | |
4884 check_cursor(); | |
4885 | |
4886 # ifdef FEAT_MBYTE | |
4887 /* Make sure the cursor is on the first byte of a multi-byte char. */ | |
4888 if (has_mbyte) | |
4889 mb_adjust_cursor(); | |
4890 # endif | |
4891 } | |
4892 #endif |