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