Mercurial > vim
annotate src/memline.c @ 7835:4d7ce6c03fda v7.4.1214
commit https://github.com/vim/vim/commit/764b23c8fd3369cb05ae9122abf3ca16fec539d7
Author: Bram Moolenaar <Bram@vim.org>
Date: Sat Jan 30 21:10:09 2016 +0100
patch 7.4.1214
Problem: Using old style function declarations.
Solution: Change to new style function declarations. (script by Hirohito
Higashi)
author | Christian Brabandt <cb@256bit.org> |
---|---|
date | Sat, 30 Jan 2016 21:15:04 +0100 |
parents | 41789f16d6b2 |
children | e7afe45a202a |
rev | line source |
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7 | 1 /* vi:set ts=8 sts=4 sw=4: |
2 * | |
3 * VIM - Vi IMproved by Bram Moolenaar | |
4 * | |
5 * Do ":help uganda" in Vim to read copying and usage conditions. | |
6 * Do ":help credits" in Vim to see a list of people who contributed. | |
7 * See README.txt for an overview of the Vim source code. | |
8 */ | |
9 | |
10 /* for debugging */ | |
11 /* #define CHECK(c, s) if (c) EMSG(s) */ | |
12 #define CHECK(c, s) | |
13 | |
14 /* | |
15 * memline.c: Contains the functions for appending, deleting and changing the | |
625 | 16 * text lines. The memfile functions are used to store the information in |
17 * blocks of memory, backed up by a file. The structure of the information is | |
18 * a tree. The root of the tree is a pointer block. The leaves of the tree | |
19 * are data blocks. In between may be several layers of pointer blocks, | |
20 * forming branches. | |
7 | 21 * |
22 * Three types of blocks are used: | |
23 * - Block nr 0 contains information for recovery | |
24 * - Pointer blocks contain list of pointers to other blocks. | |
25 * - Data blocks contain the actual text. | |
26 * | |
27 * Block nr 0 contains the block0 structure (see below). | |
28 * | |
29 * Block nr 1 is the first pointer block. It is the root of the tree. | |
30 * Other pointer blocks are branches. | |
31 * | |
32 * If a line is too big to fit in a single page, the block containing that | |
33 * line is made big enough to hold the line. It may span several pages. | |
34 * Otherwise all blocks are one page. | |
35 * | |
36 * A data block that was filled when starting to edit a file and was not | |
37 * changed since then, can have a negative block number. This means that it | |
38 * has not yet been assigned a place in the file. When recovering, the lines | |
39 * in this data block can be read from the original file. When the block is | |
40 * changed (lines appended/deleted/changed) or when it is flushed it gets a | |
41 * positive number. Use mf_trans_del() to get the new number, before calling | |
42 * mf_get(). | |
43 */ | |
44 | |
45 #include "vim.h" | |
46 | |
47 #ifndef UNIX /* it's in os_unix.h for Unix */ | |
48 # include <time.h> | |
49 #endif | |
50 | |
1030 | 51 #if defined(SASC) || defined(__amigaos4__) |
7 | 52 # include <proto/dos.h> /* for Open() and Close() */ |
53 #endif | |
54 | |
55 typedef struct block0 ZERO_BL; /* contents of the first block */ | |
56 typedef struct pointer_block PTR_BL; /* contents of a pointer block */ | |
57 typedef struct data_block DATA_BL; /* contents of a data block */ | |
58 typedef struct pointer_entry PTR_EN; /* block/line-count pair */ | |
59 | |
2267 | 60 #define DATA_ID (('d' << 8) + 'a') /* data block id */ |
61 #define PTR_ID (('p' << 8) + 't') /* pointer block id */ | |
62 #define BLOCK0_ID0 'b' /* block 0 id 0 */ | |
63 #define BLOCK0_ID1 '0' /* block 0 id 1 */ | |
64 #define BLOCK0_ID1_C0 'c' /* block 0 id 1 'cm' 0 */ | |
65 #define BLOCK0_ID1_C1 'C' /* block 0 id 1 'cm' 1 */ | |
6122 | 66 #define BLOCK0_ID1_C2 'd' /* block 0 id 1 'cm' 2 */ |
67 | |
68 #if defined(FEAT_CRYPT) | |
69 static int id1_codes[] = { | |
70 BLOCK0_ID1_C0, /* CRYPT_M_ZIP */ | |
71 BLOCK0_ID1_C1, /* CRYPT_M_BF */ | |
72 BLOCK0_ID1_C2, /* CRYPT_M_BF2 */ | |
73 }; | |
74 #endif | |
7 | 75 |
76 /* | |
77 * pointer to a block, used in a pointer block | |
78 */ | |
79 struct pointer_entry | |
80 { | |
81 blocknr_T pe_bnum; /* block number */ | |
82 linenr_T pe_line_count; /* number of lines in this branch */ | |
83 linenr_T pe_old_lnum; /* lnum for this block (for recovery) */ | |
84 int pe_page_count; /* number of pages in block pe_bnum */ | |
85 }; | |
86 | |
87 /* | |
88 * A pointer block contains a list of branches in the tree. | |
89 */ | |
90 struct pointer_block | |
91 { | |
92 short_u pb_id; /* ID for pointer block: PTR_ID */ | |
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93 short_u pb_count; /* number of pointers in this block */ |
7 | 94 short_u pb_count_max; /* maximum value for pb_count */ |
95 PTR_EN pb_pointer[1]; /* list of pointers to blocks (actually longer) | |
96 * followed by empty space until end of page */ | |
97 }; | |
98 | |
99 /* | |
100 * A data block is a leaf in the tree. | |
101 * | |
102 * The text of the lines is at the end of the block. The text of the first line | |
103 * in the block is put at the end, the text of the second line in front of it, | |
104 * etc. Thus the order of the lines is the opposite of the line number. | |
105 */ | |
106 struct data_block | |
107 { | |
108 short_u db_id; /* ID for data block: DATA_ID */ | |
109 unsigned db_free; /* free space available */ | |
110 unsigned db_txt_start; /* byte where text starts */ | |
111 unsigned db_txt_end; /* byte just after data block */ | |
112 linenr_T db_line_count; /* number of lines in this block */ | |
113 unsigned db_index[1]; /* index for start of line (actually bigger) | |
114 * followed by empty space upto db_txt_start | |
115 * followed by the text in the lines until | |
116 * end of page */ | |
117 }; | |
118 | |
119 /* | |
120 * The low bits of db_index hold the actual index. The topmost bit is | |
121 * used for the global command to be able to mark a line. | |
122 * This method is not clean, but otherwise there would be at least one extra | |
123 * byte used for each line. | |
124 * The mark has to be in this place to keep it with the correct line when other | |
125 * lines are inserted or deleted. | |
126 */ | |
127 #define DB_MARKED ((unsigned)1 << ((sizeof(unsigned) * 8) - 1)) | |
128 #define DB_INDEX_MASK (~DB_MARKED) | |
129 | |
130 #define INDEX_SIZE (sizeof(unsigned)) /* size of one db_index entry */ | |
131 #define HEADER_SIZE (sizeof(DATA_BL) - INDEX_SIZE) /* size of data block header */ | |
132 | |
39 | 133 #define B0_FNAME_SIZE_ORG 900 /* what it was in older versions */ |
2267 | 134 #define B0_FNAME_SIZE_NOCRYPT 898 /* 2 bytes used for other things */ |
135 #define B0_FNAME_SIZE_CRYPT 890 /* 10 bytes used for other things */ | |
39 | 136 #define B0_UNAME_SIZE 40 |
137 #define B0_HNAME_SIZE 40 | |
7 | 138 /* |
139 * Restrict the numbers to 32 bits, otherwise most compilers will complain. | |
140 * This won't detect a 64 bit machine that only swaps a byte in the top 32 | |
141 * bits, but that is crazy anyway. | |
142 */ | |
143 #define B0_MAGIC_LONG 0x30313233L | |
144 #define B0_MAGIC_INT 0x20212223L | |
145 #define B0_MAGIC_SHORT 0x10111213L | |
146 #define B0_MAGIC_CHAR 0x55 | |
147 | |
148 /* | |
149 * Block zero holds all info about the swap file. | |
150 * | |
151 * NOTE: DEFINITION OF BLOCK 0 SHOULD NOT CHANGE! It would make all existing | |
152 * swap files unusable! | |
153 * | |
154 * If size of block0 changes anyway, adjust MIN_SWAP_PAGE_SIZE in vim.h!! | |
155 * | |
1228 | 156 * This block is built up of single bytes, to make it portable across |
7 | 157 * different machines. b0_magic_* is used to check the byte order and size of |
158 * variables, because the rest of the swap file is not portable. | |
159 */ | |
160 struct block0 | |
161 { | |
2267 | 162 char_u b0_id[2]; /* id for block 0: BLOCK0_ID0 and BLOCK0_ID1, |
6122 | 163 * BLOCK0_ID1_C0, BLOCK0_ID1_C1, etc. */ |
7 | 164 char_u b0_version[10]; /* Vim version string */ |
165 char_u b0_page_size[4];/* number of bytes per page */ | |
166 char_u b0_mtime[4]; /* last modification time of file */ | |
167 char_u b0_ino[4]; /* inode of b0_fname */ | |
168 char_u b0_pid[4]; /* process id of creator (or 0) */ | |
169 char_u b0_uname[B0_UNAME_SIZE]; /* name of user (uid if no name) */ | |
170 char_u b0_hname[B0_HNAME_SIZE]; /* host name (if it has a name) */ | |
39 | 171 char_u b0_fname[B0_FNAME_SIZE_ORG]; /* name of file being edited */ |
7 | 172 long b0_magic_long; /* check for byte order of long */ |
173 int b0_magic_int; /* check for byte order of int */ | |
174 short b0_magic_short; /* check for byte order of short */ | |
175 char_u b0_magic_char; /* check for last char */ | |
176 }; | |
39 | 177 |
178 /* | |
625 | 179 * Note: b0_dirty and b0_flags are put at the end of the file name. For very |
39 | 180 * long file names in older versions of Vim they are invalid. |
181 * The 'fileencoding' comes before b0_flags, with a NUL in front. But only | |
182 * when there is room, for very long file names it's omitted. | |
183 */ | |
184 #define B0_DIRTY 0x55 | |
2267 | 185 #define b0_dirty b0_fname[B0_FNAME_SIZE_ORG - 1] |
39 | 186 |
187 /* | |
188 * The b0_flags field is new in Vim 7.0. | |
189 */ | |
2267 | 190 #define b0_flags b0_fname[B0_FNAME_SIZE_ORG - 2] |
191 | |
192 /* | |
193 * Crypt seed goes here, 8 bytes. New in Vim 7.3. | |
194 * Without encryption these bytes may be used for 'fenc'. | |
195 */ | |
196 #define b0_seed b0_fname[B0_FNAME_SIZE_ORG - 2 - MF_SEED_LEN] | |
39 | 197 |
198 /* The lowest two bits contain the fileformat. Zero means it's not set | |
199 * (compatible with Vim 6.x), otherwise it's EOL_UNIX + 1, EOL_DOS + 1 or | |
200 * EOL_MAC + 1. */ | |
201 #define B0_FF_MASK 3 | |
202 | |
203 /* Swap file is in directory of edited file. Used to find the file from | |
204 * different mount points. */ | |
205 #define B0_SAME_DIR 4 | |
206 | |
207 /* The 'fileencoding' is at the end of b0_fname[], with a NUL in front of it. | |
208 * When empty there is only the NUL. */ | |
209 #define B0_HAS_FENC 8 | |
7 | 210 |
211 #define STACK_INCR 5 /* nr of entries added to ml_stack at a time */ | |
212 | |
213 /* | |
214 * The line number where the first mark may be is remembered. | |
215 * If it is 0 there are no marks at all. | |
216 * (always used for the current buffer only, no buffer change possible while | |
217 * executing a global command). | |
218 */ | |
219 static linenr_T lowest_marked = 0; | |
220 | |
221 /* | |
222 * arguments for ml_find_line() | |
223 */ | |
224 #define ML_DELETE 0x11 /* delete line */ | |
225 #define ML_INSERT 0x12 /* insert line */ | |
226 #define ML_FIND 0x13 /* just find the line */ | |
227 #define ML_FLUSH 0x02 /* flush locked block */ | |
228 #define ML_SIMPLE(x) (x & 0x10) /* DEL, INS or FIND */ | |
229 | |
2267 | 230 /* argument for ml_upd_block0() */ |
231 typedef enum { | |
232 UB_FNAME = 0 /* update timestamp and filename */ | |
233 , UB_SAME_DIR /* update the B0_SAME_DIR flag */ | |
234 , UB_CRYPT /* update crypt key */ | |
235 } upd_block0_T; | |
236 | |
237 #ifdef FEAT_CRYPT | |
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238 static void ml_set_mfp_crypt(buf_T *buf); |
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239 static void ml_set_b0_crypt(buf_T *buf, ZERO_BL *b0p); |
2267 | 240 #endif |
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241 static int ml_check_b0_id(ZERO_BL *b0p); |
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242 static void ml_upd_block0(buf_T *buf, upd_block0_T what); |
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243 static void set_b0_fname(ZERO_BL *, buf_T *buf); |
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244 static void set_b0_dir_flag(ZERO_BL *b0p, buf_T *buf); |
39 | 245 #ifdef FEAT_MBYTE |
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246 static void add_b0_fenc(ZERO_BL *b0p, buf_T *buf); |
39 | 247 #endif |
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248 static time_t swapfile_info(char_u *); |
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249 static int recov_file_names(char_u **, char_u *, int prepend_dot); |
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250 static int ml_append_int(buf_T *, linenr_T, char_u *, colnr_T, int, int); |
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251 static int ml_delete_int(buf_T *, linenr_T, int); |
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252 static char_u *findswapname(buf_T *, char_u **, char_u *); |
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253 static void ml_flush_line(buf_T *); |
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254 static bhdr_T *ml_new_data(memfile_T *, int, int); |
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255 static bhdr_T *ml_new_ptr(memfile_T *); |
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256 static bhdr_T *ml_find_line(buf_T *, linenr_T, int); |
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257 static int ml_add_stack(buf_T *); |
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258 static void ml_lineadd(buf_T *, int); |
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259 static int b0_magic_wrong(ZERO_BL *); |
7 | 260 #ifdef CHECK_INODE |
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261 static int fnamecmp_ino(char_u *, char_u *, long); |
7 | 262 #endif |
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263 static void long_to_char(long, char_u *); |
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264 static long char_to_long(char_u *); |
7 | 265 #if defined(UNIX) || defined(WIN3264) |
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266 static char_u *make_percent_swname(char_u *dir, char_u *name); |
7 | 267 #endif |
2267 | 268 #ifdef FEAT_CRYPT |
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269 static cryptstate_T *ml_crypt_prepare(memfile_T *mfp, off_t offset, int reading); |
2267 | 270 #endif |
7 | 271 #ifdef FEAT_BYTEOFF |
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272 static void ml_updatechunk(buf_T *buf, long line, long len, int updtype); |
7 | 273 #endif |
274 | |
275 /* | |
625 | 276 * Open a new memline for "buf". |
7 | 277 * |
625 | 278 * Return FAIL for failure, OK otherwise. |
7 | 279 */ |
280 int | |
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281 ml_open(buf_T *buf) |
7 | 282 { |
283 memfile_T *mfp; | |
284 bhdr_T *hp = NULL; | |
285 ZERO_BL *b0p; | |
286 PTR_BL *pp; | |
287 DATA_BL *dp; | |
288 | |
625 | 289 /* |
290 * init fields in memline struct | |
291 */ | |
2267 | 292 buf->b_ml.ml_stack_size = 0; /* no stack yet */ |
625 | 293 buf->b_ml.ml_stack = NULL; /* no stack yet */ |
294 buf->b_ml.ml_stack_top = 0; /* nothing in the stack */ | |
295 buf->b_ml.ml_locked = NULL; /* no cached block */ | |
296 buf->b_ml.ml_line_lnum = 0; /* no cached line */ | |
7 | 297 #ifdef FEAT_BYTEOFF |
625 | 298 buf->b_ml.ml_chunksize = NULL; |
7 | 299 #endif |
300 | |
5737 | 301 if (cmdmod.noswapfile) |
302 buf->b_p_swf = FALSE; | |
303 | |
625 | 304 /* |
305 * When 'updatecount' is non-zero swap file may be opened later. | |
306 */ | |
307 if (p_uc && buf->b_p_swf) | |
308 buf->b_may_swap = TRUE; | |
7 | 309 else |
625 | 310 buf->b_may_swap = FALSE; |
311 | |
312 /* | |
313 * Open the memfile. No swap file is created yet. | |
314 */ | |
7 | 315 mfp = mf_open(NULL, 0); |
316 if (mfp == NULL) | |
317 goto error; | |
318 | |
625 | 319 buf->b_ml.ml_mfp = mfp; |
2267 | 320 #ifdef FEAT_CRYPT |
321 mfp->mf_buffer = buf; | |
322 #endif | |
625 | 323 buf->b_ml.ml_flags = ML_EMPTY; |
324 buf->b_ml.ml_line_count = 1; | |
13 | 325 #ifdef FEAT_LINEBREAK |
326 curwin->w_nrwidth_line_count = 0; | |
327 #endif | |
7 | 328 |
329 #if defined(MSDOS) && !defined(DJGPP) | |
330 /* for 16 bit MS-DOS create a swapfile now, because we run out of | |
331 * memory very quickly */ | |
332 if (p_uc != 0) | |
625 | 333 ml_open_file(buf); |
7 | 334 #endif |
335 | |
336 /* | |
337 * fill block0 struct and write page 0 | |
338 */ | |
339 if ((hp = mf_new(mfp, FALSE, 1)) == NULL) | |
340 goto error; | |
341 if (hp->bh_bnum != 0) | |
342 { | |
343 EMSG(_("E298: Didn't get block nr 0?")); | |
344 goto error; | |
345 } | |
346 b0p = (ZERO_BL *)(hp->bh_data); | |
347 | |
348 b0p->b0_id[0] = BLOCK0_ID0; | |
349 b0p->b0_id[1] = BLOCK0_ID1; | |
350 b0p->b0_magic_long = (long)B0_MAGIC_LONG; | |
351 b0p->b0_magic_int = (int)B0_MAGIC_INT; | |
352 b0p->b0_magic_short = (short)B0_MAGIC_SHORT; | |
353 b0p->b0_magic_char = B0_MAGIC_CHAR; | |
354 STRNCPY(b0p->b0_version, "VIM ", 4); | |
355 STRNCPY(b0p->b0_version + 4, Version, 6); | |
356 long_to_char((long)mfp->mf_page_size, b0p->b0_page_size); | |
625 | 357 |
800 | 358 #ifdef FEAT_SPELL |
359 if (!buf->b_spell) | |
360 #endif | |
625 | 361 { |
362 b0p->b0_dirty = buf->b_changed ? B0_DIRTY : 0; | |
363 b0p->b0_flags = get_fileformat(buf) + 1; | |
364 set_b0_fname(b0p, buf); | |
365 (void)get_user_name(b0p->b0_uname, B0_UNAME_SIZE); | |
366 b0p->b0_uname[B0_UNAME_SIZE - 1] = NUL; | |
367 mch_get_host_name(b0p->b0_hname, B0_HNAME_SIZE); | |
368 b0p->b0_hname[B0_HNAME_SIZE - 1] = NUL; | |
369 long_to_char(mch_get_pid(), b0p->b0_pid); | |
2267 | 370 #ifdef FEAT_CRYPT |
6122 | 371 ml_set_b0_crypt(buf, b0p); |
2267 | 372 #endif |
625 | 373 } |
7 | 374 |
375 /* | |
376 * Always sync block number 0 to disk, so we can check the file name in | |
2267 | 377 * the swap file in findswapname(). Don't do this for a help files or |
378 * a spell buffer though. | |
7 | 379 * Only works when there's a swapfile, otherwise it's done when the file |
380 * is created. | |
381 */ | |
382 mf_put(mfp, hp, TRUE, FALSE); | |
625 | 383 if (!buf->b_help && !B_SPELL(buf)) |
7 | 384 (void)mf_sync(mfp, 0); |
385 | |
625 | 386 /* |
387 * Fill in root pointer block and write page 1. | |
388 */ | |
7 | 389 if ((hp = ml_new_ptr(mfp)) == NULL) |
390 goto error; | |
391 if (hp->bh_bnum != 1) | |
392 { | |
393 EMSG(_("E298: Didn't get block nr 1?")); | |
394 goto error; | |
395 } | |
396 pp = (PTR_BL *)(hp->bh_data); | |
397 pp->pb_count = 1; | |
398 pp->pb_pointer[0].pe_bnum = 2; | |
399 pp->pb_pointer[0].pe_page_count = 1; | |
400 pp->pb_pointer[0].pe_old_lnum = 1; | |
401 pp->pb_pointer[0].pe_line_count = 1; /* line count after insertion */ | |
402 mf_put(mfp, hp, TRUE, FALSE); | |
403 | |
625 | 404 /* |
405 * Allocate first data block and create an empty line 1. | |
406 */ | |
7 | 407 if ((hp = ml_new_data(mfp, FALSE, 1)) == NULL) |
408 goto error; | |
409 if (hp->bh_bnum != 2) | |
410 { | |
411 EMSG(_("E298: Didn't get block nr 2?")); | |
412 goto error; | |
413 } | |
414 | |
415 dp = (DATA_BL *)(hp->bh_data); | |
416 dp->db_index[0] = --dp->db_txt_start; /* at end of block */ | |
417 dp->db_free -= 1 + INDEX_SIZE; | |
418 dp->db_line_count = 1; | |
2003 | 419 *((char_u *)dp + dp->db_txt_start) = NUL; /* empty line */ |
7 | 420 |
421 return OK; | |
422 | |
423 error: | |
424 if (mfp != NULL) | |
425 { | |
426 if (hp) | |
427 mf_put(mfp, hp, FALSE, FALSE); | |
428 mf_close(mfp, TRUE); /* will also free(mfp->mf_fname) */ | |
429 } | |
625 | 430 buf->b_ml.ml_mfp = NULL; |
7 | 431 return FAIL; |
432 } | |
433 | |
2267 | 434 #if defined(FEAT_CRYPT) || defined(PROTO) |
435 /* | |
6130 | 436 * Prepare encryption for "buf" for the current key and method. |
437 */ | |
438 static void | |
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439 ml_set_mfp_crypt(buf_T *buf) |
6130 | 440 { |
441 if (*buf->b_p_key != NUL) | |
442 { | |
443 int method_nr = crypt_get_method_nr(buf); | |
444 | |
445 if (method_nr > CRYPT_M_ZIP) | |
446 { | |
447 /* Generate a seed and store it in the memfile. */ | |
448 sha2_seed(buf->b_ml.ml_mfp->mf_seed, MF_SEED_LEN, NULL, 0); | |
449 } | |
450 } | |
451 } | |
452 | |
453 /* | |
2267 | 454 * Prepare encryption for "buf" with block 0 "b0p". |
455 */ | |
456 static void | |
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457 ml_set_b0_crypt(buf_T *buf, ZERO_BL *b0p) |
2267 | 458 { |
459 if (*buf->b_p_key == NUL) | |
460 b0p->b0_id[1] = BLOCK0_ID1; | |
461 else | |
462 { | |
6122 | 463 int method_nr = crypt_get_method_nr(buf); |
464 | |
465 b0p->b0_id[1] = id1_codes[method_nr]; | |
466 if (method_nr > CRYPT_M_ZIP) | |
2267 | 467 { |
468 /* Generate a seed and store it in block 0 and in the memfile. */ | |
469 sha2_seed(&b0p->b0_seed, MF_SEED_LEN, NULL, 0); | |
470 mch_memmove(buf->b_ml.ml_mfp->mf_seed, &b0p->b0_seed, MF_SEED_LEN); | |
471 } | |
472 } | |
473 } | |
474 | |
475 /* | |
476 * Called after the crypt key or 'cryptmethod' was changed for "buf". | |
477 * Will apply this to the swapfile. | |
478 * "old_key" is the previous key. It is equal to buf->b_p_key when | |
479 * 'cryptmethod' is changed. | |
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480 * "old_cm" is the previous 'cryptmethod'. It is equal to the current |
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481 * 'cryptmethod' when 'key' is changed. |
2267 | 482 */ |
483 void | |
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484 ml_set_crypt_key( |
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485 buf_T *buf, |
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486 char_u *old_key, |
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487 char_u *old_cm) |
2267 | 488 { |
489 memfile_T *mfp = buf->b_ml.ml_mfp; | |
490 bhdr_T *hp; | |
491 int page_count; | |
492 int idx; | |
493 long error; | |
494 infoptr_T *ip; | |
495 PTR_BL *pp; | |
496 DATA_BL *dp; | |
497 blocknr_T bnum; | |
498 int top; | |
6817 | 499 int old_method; |
2267 | 500 |
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501 if (mfp == NULL) |
2267 | 502 return; /* no memfile yet, nothing to do */ |
6817 | 503 old_method = crypt_method_nr_from_name(old_cm); |
504 | |
505 /* First make sure the swapfile is in a consistent state, using the old | |
506 * key and method. */ | |
507 { | |
508 char_u *new_key = buf->b_p_key; | |
509 char_u *new_buf_cm = buf->b_p_cm; | |
510 | |
511 buf->b_p_key = old_key; | |
512 buf->b_p_cm = old_cm; | |
513 ml_preserve(buf, FALSE); | |
514 buf->b_p_key = new_key; | |
515 buf->b_p_cm = new_buf_cm; | |
516 } | |
2267 | 517 |
518 /* Set the key, method and seed to be used for reading, these must be the | |
519 * old values. */ | |
520 mfp->mf_old_key = old_key; | |
6817 | 521 mfp->mf_old_cm = old_method; |
522 if (old_method > 0 && *old_key != NUL) | |
2267 | 523 mch_memmove(mfp->mf_old_seed, mfp->mf_seed, MF_SEED_LEN); |
524 | |
525 /* Update block 0 with the crypt flag and may set a new seed. */ | |
526 ml_upd_block0(buf, UB_CRYPT); | |
527 | |
528 if (mfp->mf_infile_count > 2) | |
529 { | |
530 /* | |
531 * Need to read back all data blocks from disk, decrypt them with the | |
532 * old key/method and mark them to be written. The algorithm is | |
533 * similar to what happens in ml_recover(), but we skip negative block | |
534 * numbers. | |
535 */ | |
536 ml_flush_line(buf); /* flush buffered line */ | |
537 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
538 | |
539 hp = NULL; | |
540 bnum = 1; /* start with block 1 */ | |
541 page_count = 1; /* which is 1 page */ | |
542 idx = 0; /* start with first index in block 1 */ | |
543 error = 0; | |
544 buf->b_ml.ml_stack_top = 0; | |
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545 vim_free(buf->b_ml.ml_stack); |
2267 | 546 buf->b_ml.ml_stack = NULL; |
547 buf->b_ml.ml_stack_size = 0; /* no stack yet */ | |
548 | |
549 for ( ; !got_int; line_breakcheck()) | |
550 { | |
551 if (hp != NULL) | |
552 mf_put(mfp, hp, FALSE, FALSE); /* release previous block */ | |
553 | |
554 /* get the block (pointer or data) */ | |
555 if ((hp = mf_get(mfp, (blocknr_T)bnum, page_count)) == NULL) | |
556 { | |
557 if (bnum == 1) | |
558 break; | |
559 ++error; | |
560 } | |
561 else | |
562 { | |
563 pp = (PTR_BL *)(hp->bh_data); | |
564 if (pp->pb_id == PTR_ID) /* it is a pointer block */ | |
565 { | |
566 if (pp->pb_count == 0) | |
567 { | |
568 /* empty block? */ | |
569 ++error; | |
570 } | |
571 else if (idx < (int)pp->pb_count) /* go a block deeper */ | |
572 { | |
573 if (pp->pb_pointer[idx].pe_bnum < 0) | |
574 { | |
6817 | 575 /* Skip data block with negative block number. |
576 * Should not happen, because of the ml_preserve() | |
577 * above. Get same block again for next index. */ | |
578 ++idx; | |
2267 | 579 continue; |
580 } | |
581 | |
582 /* going one block deeper in the tree, new entry in | |
583 * stack */ | |
584 if ((top = ml_add_stack(buf)) < 0) | |
585 { | |
586 ++error; | |
587 break; /* out of memory */ | |
588 } | |
589 ip = &(buf->b_ml.ml_stack[top]); | |
590 ip->ip_bnum = bnum; | |
591 ip->ip_index = idx; | |
592 | |
593 bnum = pp->pb_pointer[idx].pe_bnum; | |
594 page_count = pp->pb_pointer[idx].pe_page_count; | |
6817 | 595 idx = 0; |
2267 | 596 continue; |
597 } | |
598 } | |
599 else /* not a pointer block */ | |
600 { | |
601 dp = (DATA_BL *)(hp->bh_data); | |
602 if (dp->db_id != DATA_ID) /* block id wrong */ | |
603 ++error; | |
604 else | |
605 { | |
606 /* It is a data block, need to write it back to disk. */ | |
607 mf_put(mfp, hp, TRUE, FALSE); | |
608 hp = NULL; | |
609 } | |
610 } | |
611 } | |
612 | |
613 if (buf->b_ml.ml_stack_top == 0) /* finished */ | |
614 break; | |
615 | |
616 /* go one block up in the tree */ | |
617 ip = &(buf->b_ml.ml_stack[--(buf->b_ml.ml_stack_top)]); | |
618 bnum = ip->ip_bnum; | |
619 idx = ip->ip_index + 1; /* go to next index */ | |
620 page_count = 1; | |
621 } | |
6817 | 622 if (hp != NULL) |
623 mf_put(mfp, hp, FALSE, FALSE); /* release previous block */ | |
2657 | 624 |
625 if (error > 0) | |
626 EMSG(_("E843: Error while updating swap file crypt")); | |
2267 | 627 } |
628 | |
629 mfp->mf_old_key = NULL; | |
630 } | |
631 #endif | |
632 | |
7 | 633 /* |
634 * ml_setname() is called when the file name of "buf" has been changed. | |
635 * It may rename the swap file. | |
636 */ | |
637 void | |
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638 ml_setname(buf_T *buf) |
7 | 639 { |
640 int success = FALSE; | |
641 memfile_T *mfp; | |
642 char_u *fname; | |
643 char_u *dirp; | |
644 #if defined(MSDOS) || defined(MSWIN) | |
645 char_u *p; | |
646 #endif | |
647 | |
648 mfp = buf->b_ml.ml_mfp; | |
649 if (mfp->mf_fd < 0) /* there is no swap file yet */ | |
650 { | |
651 /* | |
652 * When 'updatecount' is 0 and 'noswapfile' there is no swap file. | |
653 * For help files we will make a swap file now. | |
654 */ | |
5737 | 655 if (p_uc != 0 && !cmdmod.noswapfile) |
7 | 656 ml_open_file(buf); /* create a swap file */ |
657 return; | |
658 } | |
659 | |
660 /* | |
661 * Try all directories in the 'directory' option. | |
662 */ | |
663 dirp = p_dir; | |
664 for (;;) | |
665 { | |
666 if (*dirp == NUL) /* tried all directories, fail */ | |
667 break; | |
43 | 668 fname = findswapname(buf, &dirp, mfp->mf_fname); |
669 /* alloc's fname */ | |
3158 | 670 if (dirp == NULL) /* out of memory */ |
671 break; | |
7 | 672 if (fname == NULL) /* no file name found for this dir */ |
673 continue; | |
674 | |
675 #if defined(MSDOS) || defined(MSWIN) | |
676 /* | |
677 * Set full pathname for swap file now, because a ":!cd dir" may | |
678 * change directory without us knowing it. | |
679 */ | |
680 p = FullName_save(fname, FALSE); | |
681 vim_free(fname); | |
682 fname = p; | |
683 if (fname == NULL) | |
684 continue; | |
685 #endif | |
686 /* if the file name is the same we don't have to do anything */ | |
687 if (fnamecmp(fname, mfp->mf_fname) == 0) | |
688 { | |
689 vim_free(fname); | |
690 success = TRUE; | |
691 break; | |
692 } | |
693 /* need to close the swap file before renaming */ | |
694 if (mfp->mf_fd >= 0) | |
695 { | |
696 close(mfp->mf_fd); | |
697 mfp->mf_fd = -1; | |
698 } | |
699 | |
700 /* try to rename the swap file */ | |
701 if (vim_rename(mfp->mf_fname, fname) == 0) | |
702 { | |
703 success = TRUE; | |
704 vim_free(mfp->mf_fname); | |
705 mfp->mf_fname = fname; | |
706 vim_free(mfp->mf_ffname); | |
707 #if defined(MSDOS) || defined(MSWIN) | |
708 mfp->mf_ffname = NULL; /* mf_fname is full pathname already */ | |
709 #else | |
710 mf_set_ffname(mfp); | |
711 #endif | |
2267 | 712 ml_upd_block0(buf, UB_SAME_DIR); |
7 | 713 break; |
714 } | |
715 vim_free(fname); /* this fname didn't work, try another */ | |
716 } | |
717 | |
718 if (mfp->mf_fd == -1) /* need to (re)open the swap file */ | |
719 { | |
720 mfp->mf_fd = mch_open((char *)mfp->mf_fname, O_RDWR | O_EXTRA, 0); | |
721 if (mfp->mf_fd < 0) | |
722 { | |
723 /* could not (re)open the swap file, what can we do???? */ | |
724 EMSG(_("E301: Oops, lost the swap file!!!")); | |
725 return; | |
726 } | |
2003 | 727 #ifdef HAVE_FD_CLOEXEC |
728 { | |
729 int fdflags = fcntl(mfp->mf_fd, F_GETFD); | |
730 if (fdflags >= 0 && (fdflags & FD_CLOEXEC) == 0) | |
731 fcntl(mfp->mf_fd, F_SETFD, fdflags | FD_CLOEXEC); | |
732 } | |
733 #endif | |
7 | 734 } |
735 if (!success) | |
736 EMSG(_("E302: Could not rename swap file")); | |
737 } | |
738 | |
739 /* | |
740 * Open a file for the memfile for all buffers that are not readonly or have | |
741 * been modified. | |
742 * Used when 'updatecount' changes from zero to non-zero. | |
743 */ | |
744 void | |
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745 ml_open_files(void) |
7 | 746 { |
747 buf_T *buf; | |
748 | |
749 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
750 if (!buf->b_p_ro || buf->b_changed) | |
751 ml_open_file(buf); | |
752 } | |
753 | |
754 /* | |
755 * Open a swap file for an existing memfile, if there is no swap file yet. | |
756 * If we are unable to find a file name, mf_fname will be NULL | |
757 * and the memfile will be in memory only (no recovery possible). | |
758 */ | |
759 void | |
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760 ml_open_file(buf_T *buf) |
7 | 761 { |
762 memfile_T *mfp; | |
763 char_u *fname; | |
764 char_u *dirp; | |
765 | |
766 mfp = buf->b_ml.ml_mfp; | |
5737 | 767 if (mfp == NULL || mfp->mf_fd >= 0 || !buf->b_p_swf || cmdmod.noswapfile) |
7 | 768 return; /* nothing to do */ |
769 | |
748 | 770 #ifdef FEAT_SPELL |
625 | 771 /* For a spell buffer use a temp file name. */ |
772 if (buf->b_spell) | |
773 { | |
6721 | 774 fname = vim_tempname('s', FALSE); |
625 | 775 if (fname != NULL) |
776 (void)mf_open_file(mfp, fname); /* consumes fname! */ | |
777 buf->b_may_swap = FALSE; | |
778 return; | |
779 } | |
780 #endif | |
781 | |
7 | 782 /* |
783 * Try all directories in 'directory' option. | |
784 */ | |
785 dirp = p_dir; | |
786 for (;;) | |
787 { | |
788 if (*dirp == NUL) | |
789 break; | |
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790 /* There is a small chance that between choosing the swap file name |
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791 * and creating it, another Vim creates the file. In that case the |
7 | 792 * creation will fail and we will use another directory. */ |
43 | 793 fname = findswapname(buf, &dirp, NULL); /* allocates fname */ |
3158 | 794 if (dirp == NULL) |
795 break; /* out of memory */ | |
7 | 796 if (fname == NULL) |
797 continue; | |
798 if (mf_open_file(mfp, fname) == OK) /* consumes fname! */ | |
799 { | |
2823 | 800 #if defined(MSDOS) || defined(MSWIN) |
7 | 801 /* |
802 * set full pathname for swap file now, because a ":!cd dir" may | |
803 * change directory without us knowing it. | |
804 */ | |
805 mf_fullname(mfp); | |
806 #endif | |
2267 | 807 ml_upd_block0(buf, UB_SAME_DIR); |
39 | 808 |
7 | 809 /* Flush block zero, so others can read it */ |
810 if (mf_sync(mfp, MFS_ZERO) == OK) | |
630 | 811 { |
812 /* Mark all blocks that should be in the swapfile as dirty. | |
813 * Needed for when the 'swapfile' option was reset, so that | |
814 * the swap file was deleted, and then on again. */ | |
815 mf_set_dirty(mfp); | |
7 | 816 break; |
630 | 817 } |
7 | 818 /* Writing block 0 failed: close the file and try another dir */ |
819 mf_close_file(buf, FALSE); | |
820 } | |
821 } | |
822 | |
823 if (mfp->mf_fname == NULL) /* Failed! */ | |
824 { | |
825 need_wait_return = TRUE; /* call wait_return later */ | |
826 ++no_wait_return; | |
827 (void)EMSG2(_("E303: Unable to open swap file for \"%s\", recovery impossible"), | |
3839 | 828 buf_spname(buf) != NULL ? buf_spname(buf) : buf->b_fname); |
7 | 829 --no_wait_return; |
830 } | |
831 | |
832 /* don't try to open a swap file again */ | |
833 buf->b_may_swap = FALSE; | |
834 } | |
835 | |
836 /* | |
837 * If still need to create a swap file, and starting to edit a not-readonly | |
838 * file, or reading into an existing buffer, create a swap file now. | |
839 */ | |
840 void | |
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841 check_need_swap( |
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842 int newfile) /* reading file into new buffer */ |
7 | 843 { |
844 if (curbuf->b_may_swap && (!curbuf->b_p_ro || !newfile)) | |
845 ml_open_file(curbuf); | |
846 } | |
847 | |
848 /* | |
849 * Close memline for buffer 'buf'. | |
850 * If 'del_file' is TRUE, delete the swap file | |
851 */ | |
852 void | |
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853 ml_close(buf_T *buf, int del_file) |
7 | 854 { |
855 if (buf->b_ml.ml_mfp == NULL) /* not open */ | |
856 return; | |
857 mf_close(buf->b_ml.ml_mfp, del_file); /* close the .swp file */ | |
858 if (buf->b_ml.ml_line_lnum != 0 && (buf->b_ml.ml_flags & ML_LINE_DIRTY)) | |
859 vim_free(buf->b_ml.ml_line_ptr); | |
860 vim_free(buf->b_ml.ml_stack); | |
861 #ifdef FEAT_BYTEOFF | |
862 vim_free(buf->b_ml.ml_chunksize); | |
863 buf->b_ml.ml_chunksize = NULL; | |
864 #endif | |
865 buf->b_ml.ml_mfp = NULL; | |
866 | |
867 /* Reset the "recovered" flag, give the ATTENTION prompt the next time | |
868 * this buffer is loaded. */ | |
869 buf->b_flags &= ~BF_RECOVERED; | |
870 } | |
871 | |
872 /* | |
873 * Close all existing memlines and memfiles. | |
874 * Only used when exiting. | |
875 * When 'del_file' is TRUE, delete the memfiles. | |
165 | 876 * But don't delete files that were ":preserve"d when we are POSIX compatible. |
7 | 877 */ |
878 void | |
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879 ml_close_all(int del_file) |
7 | 880 { |
881 buf_T *buf; | |
882 | |
883 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
165 | 884 ml_close(buf, del_file && ((buf->b_flags & BF_PRESERVED) == 0 |
885 || vim_strchr(p_cpo, CPO_PRESERVE) == NULL)); | |
5519 | 886 #ifdef FEAT_SPELL |
887 spell_delete_wordlist(); /* delete the internal wordlist */ | |
888 #endif | |
7 | 889 #ifdef TEMPDIRNAMES |
5519 | 890 vim_deltempdir(); /* delete created temp directory */ |
7 | 891 #endif |
892 } | |
893 | |
894 /* | |
895 * Close all memfiles for not modified buffers. | |
896 * Only use just before exiting! | |
897 */ | |
898 void | |
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899 ml_close_notmod(void) |
7 | 900 { |
901 buf_T *buf; | |
902 | |
903 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
904 if (!bufIsChanged(buf)) | |
905 ml_close(buf, TRUE); /* close all not-modified buffers */ | |
906 } | |
907 | |
908 /* | |
909 * Update the timestamp in the .swp file. | |
910 * Used when the file has been written. | |
911 */ | |
912 void | |
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913 ml_timestamp(buf_T *buf) |
7 | 914 { |
2267 | 915 ml_upd_block0(buf, UB_FNAME); |
916 } | |
917 | |
918 /* | |
919 * Return FAIL when the ID of "b0p" is wrong. | |
920 */ | |
921 static int | |
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922 ml_check_b0_id(ZERO_BL *b0p) |
2267 | 923 { |
924 if (b0p->b0_id[0] != BLOCK0_ID0 | |
925 || (b0p->b0_id[1] != BLOCK0_ID1 | |
926 && b0p->b0_id[1] != BLOCK0_ID1_C0 | |
6122 | 927 && b0p->b0_id[1] != BLOCK0_ID1_C1 |
928 && b0p->b0_id[1] != BLOCK0_ID1_C2) | |
2267 | 929 ) |
930 return FAIL; | |
931 return OK; | |
39 | 932 } |
933 | |
934 /* | |
935 * Update the timestamp or the B0_SAME_DIR flag of the .swp file. | |
936 */ | |
937 static void | |
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938 ml_upd_block0(buf_T *buf, upd_block0_T what) |
39 | 939 { |
7 | 940 memfile_T *mfp; |
941 bhdr_T *hp; | |
942 ZERO_BL *b0p; | |
943 | |
944 mfp = buf->b_ml.ml_mfp; | |
6130 | 945 if (mfp == NULL) |
7 | 946 return; |
6130 | 947 hp = mf_get(mfp, (blocknr_T)0, 1); |
948 if (hp == NULL) | |
949 { | |
950 #ifdef FEAT_CRYPT | |
951 /* Possibly update the seed in the memfile before there is a block0. */ | |
952 if (what == UB_CRYPT) | |
953 ml_set_mfp_crypt(buf); | |
954 #endif | |
955 return; | |
956 } | |
957 | |
7 | 958 b0p = (ZERO_BL *)(hp->bh_data); |
2267 | 959 if (ml_check_b0_id(b0p) == FAIL) |
39 | 960 EMSG(_("E304: ml_upd_block0(): Didn't get block 0??")); |
7 | 961 else |
39 | 962 { |
2267 | 963 if (what == UB_FNAME) |
39 | 964 set_b0_fname(b0p, buf); |
2267 | 965 #ifdef FEAT_CRYPT |
966 else if (what == UB_CRYPT) | |
967 ml_set_b0_crypt(buf, b0p); | |
968 #endif | |
969 else /* what == UB_SAME_DIR */ | |
39 | 970 set_b0_dir_flag(b0p, buf); |
971 } | |
7 | 972 mf_put(mfp, hp, TRUE, FALSE); |
973 } | |
974 | |
975 /* | |
976 * Write file name and timestamp into block 0 of a swap file. | |
977 * Also set buf->b_mtime. | |
978 * Don't use NameBuff[]!!! | |
979 */ | |
980 static void | |
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981 set_b0_fname(ZERO_BL *b0p, buf_T *buf) |
7 | 982 { |
983 struct stat st; | |
984 | |
985 if (buf->b_ffname == NULL) | |
986 b0p->b0_fname[0] = NUL; | |
987 else | |
988 { | |
2823 | 989 #if defined(MSDOS) || defined(MSWIN) || defined(AMIGA) |
39 | 990 /* Systems that cannot translate "~user" back into a path: copy the |
991 * file name unmodified. Do use slashes instead of backslashes for | |
992 * portability. */ | |
2267 | 993 vim_strncpy(b0p->b0_fname, buf->b_ffname, B0_FNAME_SIZE_CRYPT - 1); |
39 | 994 # ifdef BACKSLASH_IN_FILENAME |
995 forward_slash(b0p->b0_fname); | |
996 # endif | |
7 | 997 #else |
998 size_t flen, ulen; | |
999 char_u uname[B0_UNAME_SIZE]; | |
1000 | |
1001 /* | |
1002 * For a file under the home directory of the current user, we try to | |
1003 * replace the home directory path with "~user". This helps when | |
1004 * editing the same file on different machines over a network. | |
1005 * First replace home dir path with "~/" with home_replace(). | |
1006 * Then insert the user name to get "~user/". | |
1007 */ | |
2267 | 1008 home_replace(NULL, buf->b_ffname, b0p->b0_fname, |
1009 B0_FNAME_SIZE_CRYPT, TRUE); | |
7 | 1010 if (b0p->b0_fname[0] == '~') |
1011 { | |
1012 flen = STRLEN(b0p->b0_fname); | |
1013 /* If there is no user name or it is too long, don't use "~/" */ | |
1014 if (get_user_name(uname, B0_UNAME_SIZE) == FAIL | |
2267 | 1015 || (ulen = STRLEN(uname)) + flen > B0_FNAME_SIZE_CRYPT - 1) |
1016 vim_strncpy(b0p->b0_fname, buf->b_ffname, | |
1017 B0_FNAME_SIZE_CRYPT - 1); | |
7 | 1018 else |
1019 { | |
1020 mch_memmove(b0p->b0_fname + ulen + 1, b0p->b0_fname + 1, flen); | |
1021 mch_memmove(b0p->b0_fname + 1, uname, ulen); | |
1022 } | |
1023 } | |
1024 #endif | |
1025 if (mch_stat((char *)buf->b_ffname, &st) >= 0) | |
1026 { | |
1027 long_to_char((long)st.st_mtime, b0p->b0_mtime); | |
1028 #ifdef CHECK_INODE | |
1029 long_to_char((long)st.st_ino, b0p->b0_ino); | |
1030 #endif | |
1031 buf_store_time(buf, &st, buf->b_ffname); | |
1032 buf->b_mtime_read = buf->b_mtime; | |
1033 } | |
1034 else | |
1035 { | |
1036 long_to_char(0L, b0p->b0_mtime); | |
1037 #ifdef CHECK_INODE | |
1038 long_to_char(0L, b0p->b0_ino); | |
1039 #endif | |
1040 buf->b_mtime = 0; | |
1041 buf->b_mtime_read = 0; | |
1042 buf->b_orig_size = 0; | |
1043 buf->b_orig_mode = 0; | |
1044 } | |
1045 } | |
39 | 1046 |
1047 #ifdef FEAT_MBYTE | |
1048 /* Also add the 'fileencoding' if there is room. */ | |
1049 add_b0_fenc(b0p, curbuf); | |
1050 #endif | |
7 | 1051 } |
1052 | |
1053 /* | |
39 | 1054 * Update the B0_SAME_DIR flag of the swap file. It's set if the file and the |
1055 * swapfile for "buf" are in the same directory. | |
1056 * This is fail safe: if we are not sure the directories are equal the flag is | |
1057 * not set. | |
1058 */ | |
1059 static void | |
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1060 set_b0_dir_flag(ZERO_BL *b0p, buf_T *buf) |
39 | 1061 { |
1062 if (same_directory(buf->b_ml.ml_mfp->mf_fname, buf->b_ffname)) | |
1063 b0p->b0_flags |= B0_SAME_DIR; | |
1064 else | |
1065 b0p->b0_flags &= ~B0_SAME_DIR; | |
1066 } | |
1067 | |
1068 #ifdef FEAT_MBYTE | |
1069 /* | |
1070 * When there is room, add the 'fileencoding' to block zero. | |
1071 */ | |
1072 static void | |
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1073 add_b0_fenc( |
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1074 ZERO_BL *b0p, |
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|
1075 buf_T *buf) |
39 | 1076 { |
1077 int n; | |
2267 | 1078 int size = B0_FNAME_SIZE_NOCRYPT; |
1079 | |
1080 # ifdef FEAT_CRYPT | |
1081 /* Without encryption use the same offset as in Vim 7.2 to be compatible. | |
1082 * With encryption it's OK to move elsewhere, the swap file is not | |
1083 * compatible anyway. */ | |
1084 if (*buf->b_p_key != NUL) | |
1085 size = B0_FNAME_SIZE_CRYPT; | |
1086 # endif | |
39 | 1087 |
835 | 1088 n = (int)STRLEN(buf->b_p_fenc); |
2267 | 1089 if ((int)STRLEN(b0p->b0_fname) + n + 1 > size) |
39 | 1090 b0p->b0_flags &= ~B0_HAS_FENC; |
1091 else | |
1092 { | |
2267 | 1093 mch_memmove((char *)b0p->b0_fname + size - n, |
39 | 1094 (char *)buf->b_p_fenc, (size_t)n); |
2267 | 1095 *(b0p->b0_fname + size - n - 1) = NUL; |
39 | 1096 b0p->b0_flags |= B0_HAS_FENC; |
1097 } | |
1098 } | |
1099 #endif | |
1100 | |
1101 | |
1102 /* | |
2267 | 1103 * Try to recover curbuf from the .swp file. |
7 | 1104 */ |
1105 void | |
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1106 ml_recover(void) |
7 | 1107 { |
1108 buf_T *buf = NULL; | |
1109 memfile_T *mfp = NULL; | |
1110 char_u *fname; | |
2267 | 1111 char_u *fname_used = NULL; |
7 | 1112 bhdr_T *hp = NULL; |
1113 ZERO_BL *b0p; | |
39 | 1114 int b0_ff; |
1115 char_u *b0_fenc = NULL; | |
2267 | 1116 #ifdef FEAT_CRYPT |
1117 int b0_cm = -1; | |
1118 #endif | |
7 | 1119 PTR_BL *pp; |
1120 DATA_BL *dp; | |
1121 infoptr_T *ip; | |
1122 blocknr_T bnum; | |
1123 int page_count; | |
1124 struct stat org_stat, swp_stat; | |
1125 int len; | |
1126 int directly; | |
1127 linenr_T lnum; | |
1128 char_u *p; | |
1129 int i; | |
1130 long error; | |
1131 int cannot_open; | |
1132 linenr_T line_count; | |
1133 int has_error; | |
1134 int idx; | |
1135 int top; | |
1136 int txt_start; | |
1137 off_t size; | |
1138 int called_from_main; | |
1139 int serious_error = TRUE; | |
1140 long mtime; | |
1141 int attr; | |
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1142 int orig_file_status = NOTDONE; |
7 | 1143 |
1144 recoverymode = TRUE; | |
1145 called_from_main = (curbuf->b_ml.ml_mfp == NULL); | |
1146 attr = hl_attr(HLF_E); | |
1975 | 1147 |
1148 /* | |
1149 * If the file name ends in ".s[uvw][a-z]" we assume this is the swap file. | |
1150 * Otherwise a search is done to find the swap file(s). | |
1151 */ | |
7 | 1152 fname = curbuf->b_fname; |
1153 if (fname == NULL) /* When there is no file name */ | |
1154 fname = (char_u *)""; | |
1155 len = (int)STRLEN(fname); | |
1156 if (len >= 4 && | |
2823 | 1157 #if defined(VMS) |
1975 | 1158 STRNICMP(fname + len - 4, "_s" , 2) |
7 | 1159 #else |
1975 | 1160 STRNICMP(fname + len - 4, ".s" , 2) |
7 | 1161 #endif |
1975 | 1162 == 0 |
1163 && vim_strchr((char_u *)"UVWuvw", fname[len - 2]) != NULL | |
1164 && ASCII_ISALPHA(fname[len - 1])) | |
7 | 1165 { |
1166 directly = TRUE; | |
2267 | 1167 fname_used = vim_strsave(fname); /* make a copy for mf_open() */ |
7 | 1168 } |
1169 else | |
1170 { | |
1171 directly = FALSE; | |
1172 | |
1173 /* count the number of matching swap files */ | |
2267 | 1174 len = recover_names(fname, FALSE, 0, NULL); |
7 | 1175 if (len == 0) /* no swap files found */ |
1176 { | |
1177 EMSG2(_("E305: No swap file found for %s"), fname); | |
1178 goto theend; | |
1179 } | |
1180 if (len == 1) /* one swap file found, use it */ | |
1181 i = 1; | |
1182 else /* several swap files found, choose */ | |
1183 { | |
1184 /* list the names of the swap files */ | |
2267 | 1185 (void)recover_names(fname, TRUE, 0, NULL); |
7 | 1186 msg_putchar('\n'); |
1187 MSG_PUTS(_("Enter number of swap file to use (0 to quit): ")); | |
374 | 1188 i = get_number(FALSE, NULL); |
7 | 1189 if (i < 1 || i > len) |
1190 goto theend; | |
1191 } | |
1192 /* get the swap file name that will be used */ | |
2267 | 1193 (void)recover_names(fname, FALSE, i, &fname_used); |
7 | 1194 } |
2267 | 1195 if (fname_used == NULL) |
7 | 1196 goto theend; /* out of memory */ |
1197 | |
1198 /* When called from main() still need to initialize storage structure */ | |
625 | 1199 if (called_from_main && ml_open(curbuf) == FAIL) |
7 | 1200 getout(1); |
1201 | |
2267 | 1202 /* |
1203 * Allocate a buffer structure for the swap file that is used for recovery. | |
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1204 * Only the memline and crypt information in it are really used. |
2267 | 1205 */ |
7 | 1206 buf = (buf_T *)alloc((unsigned)sizeof(buf_T)); |
1207 if (buf == NULL) | |
1208 goto theend; | |
2267 | 1209 |
1210 /* | |
1211 * init fields in memline struct | |
1212 */ | |
7 | 1213 buf->b_ml.ml_stack_size = 0; /* no stack yet */ |
1214 buf->b_ml.ml_stack = NULL; /* no stack yet */ | |
1215 buf->b_ml.ml_stack_top = 0; /* nothing in the stack */ | |
1216 buf->b_ml.ml_line_lnum = 0; /* no cached line */ | |
1217 buf->b_ml.ml_locked = NULL; /* no locked block */ | |
1218 buf->b_ml.ml_flags = 0; | |
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1219 #ifdef FEAT_CRYPT |
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1220 buf->b_p_key = empty_option; |
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1221 buf->b_p_cm = empty_option; |
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1222 #endif |
7 | 1223 |
2267 | 1224 /* |
1225 * open the memfile from the old swap file | |
1226 */ | |
1227 p = vim_strsave(fname_used); /* save "fname_used" for the message: | |
1228 mf_open() will consume "fname_used"! */ | |
1229 mfp = mf_open(fname_used, O_RDONLY); | |
1230 fname_used = p; | |
7 | 1231 if (mfp == NULL || mfp->mf_fd < 0) |
1232 { | |
2267 | 1233 if (fname_used != NULL) |
1234 EMSG2(_("E306: Cannot open %s"), fname_used); | |
7 | 1235 goto theend; |
1236 } | |
1237 buf->b_ml.ml_mfp = mfp; | |
2267 | 1238 #ifdef FEAT_CRYPT |
1239 mfp->mf_buffer = buf; | |
1240 #endif | |
7 | 1241 |
1242 /* | |
1243 * The page size set in mf_open() might be different from the page size | |
1244 * used in the swap file, we must get it from block 0. But to read block | |
1245 * 0 we need a page size. Use the minimal size for block 0 here, it will | |
1246 * be set to the real value below. | |
1247 */ | |
1248 mfp->mf_page_size = MIN_SWAP_PAGE_SIZE; | |
1249 | |
2267 | 1250 /* |
1251 * try to read block 0 | |
1252 */ | |
7 | 1253 if ((hp = mf_get(mfp, (blocknr_T)0, 1)) == NULL) |
1254 { | |
1255 msg_start(); | |
1256 MSG_PUTS_ATTR(_("Unable to read block 0 from "), attr | MSG_HIST); | |
1257 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST); | |
2267 | 1258 MSG_PUTS_ATTR(_("\nMaybe no changes were made or Vim did not update the swap file."), |
7 | 1259 attr | MSG_HIST); |
1260 msg_end(); | |
1261 goto theend; | |
1262 } | |
1263 b0p = (ZERO_BL *)(hp->bh_data); | |
1264 if (STRNCMP(b0p->b0_version, "VIM 3.0", 7) == 0) | |
1265 { | |
1266 msg_start(); | |
1267 msg_outtrans_attr(mfp->mf_fname, MSG_HIST); | |
1268 MSG_PUTS_ATTR(_(" cannot be used with this version of Vim.\n"), | |
1269 MSG_HIST); | |
1270 MSG_PUTS_ATTR(_("Use Vim version 3.0.\n"), MSG_HIST); | |
1271 msg_end(); | |
1272 goto theend; | |
1273 } | |
2267 | 1274 if (ml_check_b0_id(b0p) == FAIL) |
7 | 1275 { |
1276 EMSG2(_("E307: %s does not look like a Vim swap file"), mfp->mf_fname); | |
1277 goto theend; | |
1278 } | |
1279 if (b0_magic_wrong(b0p)) | |
1280 { | |
1281 msg_start(); | |
1282 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST); | |
1283 #if defined(MSDOS) || defined(MSWIN) | |
1284 if (STRNCMP(b0p->b0_hname, "PC ", 3) == 0) | |
1285 MSG_PUTS_ATTR(_(" cannot be used with this version of Vim.\n"), | |
1286 attr | MSG_HIST); | |
1287 else | |
1288 #endif | |
1289 MSG_PUTS_ATTR(_(" cannot be used on this computer.\n"), | |
1290 attr | MSG_HIST); | |
1291 MSG_PUTS_ATTR(_("The file was created on "), attr | MSG_HIST); | |
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1292 /* avoid going past the end of a corrupted hostname */ |
7 | 1293 b0p->b0_fname[0] = NUL; |
1294 MSG_PUTS_ATTR(b0p->b0_hname, attr | MSG_HIST); | |
1295 MSG_PUTS_ATTR(_(",\nor the file has been damaged."), attr | MSG_HIST); | |
1296 msg_end(); | |
1297 goto theend; | |
1298 } | |
1105 | 1299 |
2267 | 1300 #ifdef FEAT_CRYPT |
6122 | 1301 for (i = 0; i < (int)(sizeof(id1_codes) / sizeof(int)); ++i) |
1302 if (id1_codes[i] == b0p->b0_id[1]) | |
1303 b0_cm = i; | |
1304 if (b0_cm > 0) | |
2267 | 1305 mch_memmove(mfp->mf_seed, &b0p->b0_seed, MF_SEED_LEN); |
6122 | 1306 crypt_set_cm_option(buf, b0_cm < 0 ? 0 : b0_cm); |
2267 | 1307 #else |
1308 if (b0p->b0_id[1] != BLOCK0_ID1) | |
1309 { | |
2283
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1310 EMSG2(_("E833: %s is encrypted and this version of Vim does not support encryption"), mfp->mf_fname); |
2267 | 1311 goto theend; |
1312 } | |
1313 #endif | |
1314 | |
7 | 1315 /* |
1316 * If we guessed the wrong page size, we have to recalculate the | |
1317 * highest block number in the file. | |
1318 */ | |
1319 if (mfp->mf_page_size != (unsigned)char_to_long(b0p->b0_page_size)) | |
1320 { | |
1105 | 1321 unsigned previous_page_size = mfp->mf_page_size; |
1322 | |
7 | 1323 mf_new_page_size(mfp, (unsigned)char_to_long(b0p->b0_page_size)); |
1105 | 1324 if (mfp->mf_page_size < previous_page_size) |
1325 { | |
1326 msg_start(); | |
1327 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST); | |
1328 MSG_PUTS_ATTR(_(" has been damaged (page size is smaller than minimum value).\n"), | |
1329 attr | MSG_HIST); | |
1330 msg_end(); | |
1331 goto theend; | |
1332 } | |
7 | 1333 if ((size = lseek(mfp->mf_fd, (off_t)0L, SEEK_END)) <= 0) |
1334 mfp->mf_blocknr_max = 0; /* no file or empty file */ | |
1335 else | |
1336 mfp->mf_blocknr_max = (blocknr_T)(size / mfp->mf_page_size); | |
1337 mfp->mf_infile_count = mfp->mf_blocknr_max; | |
1105 | 1338 |
1339 /* need to reallocate the memory used to store the data */ | |
1340 p = alloc(mfp->mf_page_size); | |
1341 if (p == NULL) | |
1342 goto theend; | |
1343 mch_memmove(p, hp->bh_data, previous_page_size); | |
1344 vim_free(hp->bh_data); | |
1345 hp->bh_data = p; | |
1346 b0p = (ZERO_BL *)(hp->bh_data); | |
7 | 1347 } |
1348 | |
2267 | 1349 /* |
1350 * If .swp file name given directly, use name from swap file for buffer. | |
1351 */ | |
7 | 1352 if (directly) |
1353 { | |
1354 expand_env(b0p->b0_fname, NameBuff, MAXPATHL); | |
1355 if (setfname(curbuf, NameBuff, NULL, TRUE) == FAIL) | |
1356 goto theend; | |
1357 } | |
1358 | |
1359 home_replace(NULL, mfp->mf_fname, NameBuff, MAXPATHL, TRUE); | |
274 | 1360 smsg((char_u *)_("Using swap file \"%s\""), NameBuff); |
7 | 1361 |
1362 if (buf_spname(curbuf) != NULL) | |
3839 | 1363 vim_strncpy(NameBuff, buf_spname(curbuf), MAXPATHL - 1); |
7 | 1364 else |
1365 home_replace(NULL, curbuf->b_ffname, NameBuff, MAXPATHL, TRUE); | |
274 | 1366 smsg((char_u *)_("Original file \"%s\""), NameBuff); |
7 | 1367 msg_putchar('\n'); |
1368 | |
2267 | 1369 /* |
1370 * check date of swap file and original file | |
1371 */ | |
7 | 1372 mtime = char_to_long(b0p->b0_mtime); |
1373 if (curbuf->b_ffname != NULL | |
1374 && mch_stat((char *)curbuf->b_ffname, &org_stat) != -1 | |
1375 && ((mch_stat((char *)mfp->mf_fname, &swp_stat) != -1 | |
1376 && org_stat.st_mtime > swp_stat.st_mtime) | |
1377 || org_stat.st_mtime != mtime)) | |
1378 { | |
1379 EMSG(_("E308: Warning: Original file may have been changed")); | |
1380 } | |
1381 out_flush(); | |
39 | 1382 |
1383 /* Get the 'fileformat' and 'fileencoding' from block zero. */ | |
1384 b0_ff = (b0p->b0_flags & B0_FF_MASK); | |
1385 if (b0p->b0_flags & B0_HAS_FENC) | |
1386 { | |
2271
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1387 int fnsize = B0_FNAME_SIZE_NOCRYPT; |
2267 | 1388 |
1389 #ifdef FEAT_CRYPT | |
1390 /* Use the same size as in add_b0_fenc(). */ | |
1391 if (b0p->b0_id[1] != BLOCK0_ID1) | |
2271
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|
1392 fnsize = B0_FNAME_SIZE_CRYPT; |
2267 | 1393 #endif |
2271
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1394 for (p = b0p->b0_fname + fnsize; p > b0p->b0_fname && p[-1] != NUL; --p) |
39 | 1395 ; |
2271
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|
1396 b0_fenc = vim_strnsave(p, (int)(b0p->b0_fname + fnsize - p)); |
39 | 1397 } |
1398 | |
7 | 1399 mf_put(mfp, hp, FALSE, FALSE); /* release block 0 */ |
1400 hp = NULL; | |
1401 | |
1402 /* | |
1403 * Now that we are sure that the file is going to be recovered, clear the | |
1404 * contents of the current buffer. | |
1405 */ | |
1406 while (!(curbuf->b_ml.ml_flags & ML_EMPTY)) | |
1407 ml_delete((linenr_T)1, FALSE); | |
1408 | |
1409 /* | |
1410 * Try reading the original file to obtain the values of 'fileformat', | |
1411 * 'fileencoding', etc. Ignore errors. The text itself is not used. | |
2267 | 1412 * When the file is encrypted the user is asked to enter the key. |
7 | 1413 */ |
1414 if (curbuf->b_ffname != NULL) | |
2162
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|
1415 orig_file_status = readfile(curbuf->b_ffname, NULL, (linenr_T)0, |
7 | 1416 (linenr_T)0, (linenr_T)MAXLNUM, NULL, READ_NEW); |
1417 | |
2267 | 1418 #ifdef FEAT_CRYPT |
1419 if (b0_cm >= 0) | |
1420 { | |
1421 /* Need to ask the user for the crypt key. If this fails we continue | |
1422 * without a key, will probably get garbage text. */ | |
1423 if (*curbuf->b_p_key != NUL) | |
1424 { | |
1425 smsg((char_u *)_("Swap file is encrypted: \"%s\""), fname_used); | |
1426 MSG_PUTS(_("\nIf you entered a new crypt key but did not write the text file,")); | |
1427 MSG_PUTS(_("\nenter the new crypt key.")); | |
1428 MSG_PUTS(_("\nIf you wrote the text file after changing the crypt key press enter")); | |
1429 MSG_PUTS(_("\nto use the same key for text file and swap file")); | |
1430 } | |
1431 else | |
1432 smsg((char_u *)_(need_key_msg), fname_used); | |
6122 | 1433 buf->b_p_key = crypt_get_key(FALSE, FALSE); |
2267 | 1434 if (buf->b_p_key == NULL) |
1435 buf->b_p_key = curbuf->b_p_key; | |
1436 else if (*buf->b_p_key == NUL) | |
1437 { | |
1438 vim_free(buf->b_p_key); | |
1439 buf->b_p_key = curbuf->b_p_key; | |
1440 } | |
1441 if (buf->b_p_key == NULL) | |
1442 buf->b_p_key = empty_option; | |
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|
1443 } |
2267 | 1444 #endif |
7 | 1445 |
39 | 1446 /* Use the 'fileformat' and 'fileencoding' as stored in the swap file. */ |
1447 if (b0_ff != 0) | |
1448 set_fileformat(b0_ff - 1, OPT_LOCAL); | |
1449 if (b0_fenc != NULL) | |
1450 { | |
1451 set_option_value((char_u *)"fenc", 0L, b0_fenc, OPT_LOCAL); | |
1452 vim_free(b0_fenc); | |
1453 } | |
1454 unchanged(curbuf, TRUE); | |
1455 | |
7 | 1456 bnum = 1; /* start with block 1 */ |
1457 page_count = 1; /* which is 1 page */ | |
1458 lnum = 0; /* append after line 0 in curbuf */ | |
1459 line_count = 0; | |
1460 idx = 0; /* start with first index in block 1 */ | |
1461 error = 0; | |
1462 buf->b_ml.ml_stack_top = 0; | |
1463 buf->b_ml.ml_stack = NULL; | |
1464 buf->b_ml.ml_stack_size = 0; /* no stack yet */ | |
1465 | |
1466 if (curbuf->b_ffname == NULL) | |
1467 cannot_open = TRUE; | |
1468 else | |
1469 cannot_open = FALSE; | |
1470 | |
1471 serious_error = FALSE; | |
1472 for ( ; !got_int; line_breakcheck()) | |
1473 { | |
1474 if (hp != NULL) | |
1475 mf_put(mfp, hp, FALSE, FALSE); /* release previous block */ | |
1476 | |
1477 /* | |
1478 * get block | |
1479 */ | |
1480 if ((hp = mf_get(mfp, (blocknr_T)bnum, page_count)) == NULL) | |
1481 { | |
1482 if (bnum == 1) | |
1483 { | |
1484 EMSG2(_("E309: Unable to read block 1 from %s"), mfp->mf_fname); | |
1485 goto theend; | |
1486 } | |
1487 ++error; | |
1488 ml_append(lnum++, (char_u *)_("???MANY LINES MISSING"), | |
1489 (colnr_T)0, TRUE); | |
1490 } | |
1491 else /* there is a block */ | |
1492 { | |
1493 pp = (PTR_BL *)(hp->bh_data); | |
1494 if (pp->pb_id == PTR_ID) /* it is a pointer block */ | |
1495 { | |
1496 /* check line count when using pointer block first time */ | |
1497 if (idx == 0 && line_count != 0) | |
1498 { | |
1499 for (i = 0; i < (int)pp->pb_count; ++i) | |
1500 line_count -= pp->pb_pointer[i].pe_line_count; | |
1501 if (line_count != 0) | |
1502 { | |
1503 ++error; | |
1504 ml_append(lnum++, (char_u *)_("???LINE COUNT WRONG"), | |
1505 (colnr_T)0, TRUE); | |
1506 } | |
1507 } | |
1508 | |
1509 if (pp->pb_count == 0) | |
1510 { | |
1511 ml_append(lnum++, (char_u *)_("???EMPTY BLOCK"), | |
1512 (colnr_T)0, TRUE); | |
1513 ++error; | |
1514 } | |
1515 else if (idx < (int)pp->pb_count) /* go a block deeper */ | |
1516 { | |
1517 if (pp->pb_pointer[idx].pe_bnum < 0) | |
1518 { | |
1519 /* | |
1520 * Data block with negative block number. | |
1521 * Try to read lines from the original file. | |
1522 * This is slow, but it works. | |
1523 */ | |
1524 if (!cannot_open) | |
1525 { | |
1526 line_count = pp->pb_pointer[idx].pe_line_count; | |
1527 if (readfile(curbuf->b_ffname, NULL, lnum, | |
1528 pp->pb_pointer[idx].pe_old_lnum - 1, | |
1529 line_count, NULL, 0) == FAIL) | |
1530 cannot_open = TRUE; | |
1531 else | |
1532 lnum += line_count; | |
1533 } | |
1534 if (cannot_open) | |
1535 { | |
1536 ++error; | |
1537 ml_append(lnum++, (char_u *)_("???LINES MISSING"), | |
1538 (colnr_T)0, TRUE); | |
1539 } | |
1540 ++idx; /* get same block again for next index */ | |
1541 continue; | |
1542 } | |
1543 | |
1544 /* | |
1545 * going one block deeper in the tree | |
1546 */ | |
1547 if ((top = ml_add_stack(buf)) < 0) /* new entry in stack */ | |
1548 { | |
1549 ++error; | |
1550 break; /* out of memory */ | |
1551 } | |
1552 ip = &(buf->b_ml.ml_stack[top]); | |
1553 ip->ip_bnum = bnum; | |
1554 ip->ip_index = idx; | |
1555 | |
1556 bnum = pp->pb_pointer[idx].pe_bnum; | |
1557 line_count = pp->pb_pointer[idx].pe_line_count; | |
1558 page_count = pp->pb_pointer[idx].pe_page_count; | |
2885 | 1559 idx = 0; |
7 | 1560 continue; |
1561 } | |
1562 } | |
1563 else /* not a pointer block */ | |
1564 { | |
1565 dp = (DATA_BL *)(hp->bh_data); | |
1566 if (dp->db_id != DATA_ID) /* block id wrong */ | |
1567 { | |
1568 if (bnum == 1) | |
1569 { | |
1570 EMSG2(_("E310: Block 1 ID wrong (%s not a .swp file?)"), | |
1571 mfp->mf_fname); | |
1572 goto theend; | |
1573 } | |
1574 ++error; | |
1575 ml_append(lnum++, (char_u *)_("???BLOCK MISSING"), | |
1576 (colnr_T)0, TRUE); | |
1577 } | |
1578 else | |
1579 { | |
1580 /* | |
1581 * it is a data block | |
1582 * Append all the lines in this block | |
1583 */ | |
1584 has_error = FALSE; | |
1585 /* | |
1586 * check length of block | |
1587 * if wrong, use length in pointer block | |
1588 */ | |
1589 if (page_count * mfp->mf_page_size != dp->db_txt_end) | |
1590 { | |
1591 ml_append(lnum++, (char_u *)_("??? from here until ???END lines may be messed up"), | |
1592 (colnr_T)0, TRUE); | |
1593 ++error; | |
1594 has_error = TRUE; | |
1595 dp->db_txt_end = page_count * mfp->mf_page_size; | |
1596 } | |
1597 | |
1598 /* make sure there is a NUL at the end of the block */ | |
1599 *((char_u *)dp + dp->db_txt_end - 1) = NUL; | |
1600 | |
1601 /* | |
1602 * check number of lines in block | |
1603 * if wrong, use count in data block | |
1604 */ | |
1605 if (line_count != dp->db_line_count) | |
1606 { | |
1607 ml_append(lnum++, (char_u *)_("??? from here until ???END lines may have been inserted/deleted"), | |
1608 (colnr_T)0, TRUE); | |
1609 ++error; | |
1610 has_error = TRUE; | |
1611 } | |
1612 | |
1613 for (i = 0; i < dp->db_line_count; ++i) | |
1614 { | |
1615 txt_start = (dp->db_index[i] & DB_INDEX_MASK); | |
1978 | 1616 if (txt_start <= (int)HEADER_SIZE |
7 | 1617 || txt_start >= (int)dp->db_txt_end) |
1618 { | |
1619 p = (char_u *)"???"; | |
1620 ++error; | |
1621 } | |
1622 else | |
1623 p = (char_u *)dp + txt_start; | |
1624 ml_append(lnum++, p, (colnr_T)0, TRUE); | |
1625 } | |
1626 if (has_error) | |
1978 | 1627 ml_append(lnum++, (char_u *)_("???END"), |
1628 (colnr_T)0, TRUE); | |
7 | 1629 } |
1630 } | |
1631 } | |
1632 | |
1633 if (buf->b_ml.ml_stack_top == 0) /* finished */ | |
1634 break; | |
1635 | |
1636 /* | |
1637 * go one block up in the tree | |
1638 */ | |
1639 ip = &(buf->b_ml.ml_stack[--(buf->b_ml.ml_stack_top)]); | |
1640 bnum = ip->ip_bnum; | |
1641 idx = ip->ip_index + 1; /* go to next index */ | |
1642 page_count = 1; | |
1643 } | |
1644 | |
1645 /* | |
2162
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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diff
changeset
|
1646 * Compare the buffer contents with the original file. When they differ |
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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diff
changeset
|
1647 * set the 'modified' flag. |
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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diff
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|
1648 * Lines 1 - lnum are the new contents. |
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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|
1649 * Lines lnum + 1 to ml_line_count are the original contents. |
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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|
1650 * Line ml_line_count + 1 in the dummy empty line. |
7 | 1651 */ |
2162
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|
1652 if (orig_file_status != OK || curbuf->b_ml.ml_line_count != lnum * 2 + 1) |
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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|
1653 { |
0527eb0f6918
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diff
changeset
|
1654 /* Recovering an empty file results in two lines and the first line is |
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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diff
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|
1655 * empty. Don't set the modified flag then. */ |
0527eb0f6918
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changeset
|
1656 if (!(curbuf->b_ml.ml_line_count == 2 && *ml_get(1) == NUL)) |
0527eb0f6918
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changeset
|
1657 { |
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After recovery check if the text changed. If it did mark the buffer as
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|
1658 changed_int(); |
0527eb0f6918
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changeset
|
1659 ++curbuf->b_changedtick; |
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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changeset
|
1660 } |
0527eb0f6918
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diff
changeset
|
1661 } |
0527eb0f6918
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changeset
|
1662 else |
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diff
changeset
|
1663 { |
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changeset
|
1664 for (idx = 1; idx <= lnum; ++idx) |
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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|
1665 { |
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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changeset
|
1666 /* Need to copy one line, fetching the other one may flush it. */ |
0527eb0f6918
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|
1667 p = vim_strsave(ml_get(idx)); |
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|
1668 i = STRCMP(p, ml_get(idx + lnum)); |
0527eb0f6918
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changeset
|
1669 vim_free(p); |
0527eb0f6918
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|
1670 if (i != 0) |
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|
1671 { |
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changeset
|
1672 changed_int(); |
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|
1673 ++curbuf->b_changedtick; |
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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changeset
|
1674 break; |
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|
1675 } |
0527eb0f6918
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|
1676 } |
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|
1677 } |
0527eb0f6918
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|
1678 |
0527eb0f6918
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|
1679 /* |
0527eb0f6918
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changeset
|
1680 * Delete the lines from the original file and the dummy line from the |
0527eb0f6918
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1681 * empty buffer. These will now be after the last line in the buffer. |
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1682 */ |
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1683 while (curbuf->b_ml.ml_line_count > lnum |
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1684 && !(curbuf->b_ml.ml_flags & ML_EMPTY)) |
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1685 ml_delete(curbuf->b_ml.ml_line_count, FALSE); |
7 | 1686 curbuf->b_flags |= BF_RECOVERED; |
1687 | |
1688 recoverymode = FALSE; | |
1689 if (got_int) | |
1690 EMSG(_("E311: Recovery Interrupted")); | |
1691 else if (error) | |
1692 { | |
1693 ++no_wait_return; | |
1694 MSG(">>>>>>>>>>>>>"); | |
1695 EMSG(_("E312: Errors detected while recovering; look for lines starting with ???")); | |
1696 --no_wait_return; | |
1697 MSG(_("See \":help E312\" for more information.")); | |
1698 MSG(">>>>>>>>>>>>>"); | |
1699 } | |
1700 else | |
1701 { | |
2162
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1702 if (curbuf->b_changed) |
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1703 { |
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1704 MSG(_("Recovery completed. You should check if everything is OK.")); |
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1705 MSG_PUTS(_("\n(You might want to write out this file under another name\n")); |
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1706 MSG_PUTS(_("and run diff with the original file to check for changes)")); |
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1707 } |
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1708 else |
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1709 MSG(_("Recovery completed. Buffer contents equals file contents.")); |
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1710 MSG_PUTS(_("\nYou may want to delete the .swp file now.\n\n")); |
7 | 1711 cmdline_row = msg_row; |
1712 } | |
2267 | 1713 #ifdef FEAT_CRYPT |
1714 if (*buf->b_p_key != NUL && STRCMP(curbuf->b_p_key, buf->b_p_key) != 0) | |
1715 { | |
1716 MSG_PUTS(_("Using crypt key from swap file for the text file.\n")); | |
1717 set_option_value((char_u *)"key", 0L, buf->b_p_key, OPT_LOCAL); | |
1718 } | |
1719 #endif | |
7 | 1720 redraw_curbuf_later(NOT_VALID); |
1721 | |
1722 theend: | |
2267 | 1723 vim_free(fname_used); |
7 | 1724 recoverymode = FALSE; |
1725 if (mfp != NULL) | |
1726 { | |
1727 if (hp != NULL) | |
1728 mf_put(mfp, hp, FALSE, FALSE); | |
1729 mf_close(mfp, FALSE); /* will also vim_free(mfp->mf_fname) */ | |
1730 } | |
1053 | 1731 if (buf != NULL) |
1732 { | |
2267 | 1733 #ifdef FEAT_CRYPT |
1734 if (buf->b_p_key != curbuf->b_p_key) | |
1735 free_string_option(buf->b_p_key); | |
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1736 free_string_option(buf->b_p_cm); |
2267 | 1737 #endif |
1053 | 1738 vim_free(buf->b_ml.ml_stack); |
1739 vim_free(buf); | |
1740 } | |
7 | 1741 if (serious_error && called_from_main) |
1742 ml_close(curbuf, TRUE); | |
1743 #ifdef FEAT_AUTOCMD | |
1744 else | |
1745 { | |
1746 apply_autocmds(EVENT_BUFREADPOST, NULL, curbuf->b_fname, FALSE, curbuf); | |
1747 apply_autocmds(EVENT_BUFWINENTER, NULL, curbuf->b_fname, FALSE, curbuf); | |
1748 } | |
1749 #endif | |
1750 return; | |
1751 } | |
1752 | |
1753 /* | |
1754 * Find the names of swap files in current directory and the directory given | |
1755 * with the 'directory' option. | |
1756 * | |
1757 * Used to: | |
1758 * - list the swap files for "vim -r" | |
1759 * - count the number of swap files when recovering | |
1760 * - list the swap files when recovering | |
1761 * - find the name of the n'th swap file when recovering | |
1762 */ | |
1763 int | |
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1764 recover_names( |
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1765 char_u *fname, /* base for swap file name */ |
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1766 int list, /* when TRUE, list the swap file names */ |
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1767 int nr, /* when non-zero, return nr'th swap file name */ |
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1768 char_u **fname_out) /* result when "nr" > 0 */ |
7 | 1769 { |
1770 int num_names; | |
1771 char_u *(names[6]); | |
1772 char_u *tail; | |
1773 char_u *p; | |
1774 int num_files; | |
1775 int file_count = 0; | |
1776 char_u **files; | |
1777 int i; | |
1778 char_u *dirp; | |
1779 char_u *dir_name; | |
2175 | 1780 char_u *fname_res = NULL; |
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1781 #ifdef HAVE_READLINK |
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1782 char_u fname_buf[MAXPATHL]; |
2175 | 1783 #endif |
1784 | |
1785 if (fname != NULL) | |
1786 { | |
1787 #ifdef HAVE_READLINK | |
2267 | 1788 /* Expand symlink in the file name, because the swap file is created |
1789 * with the actual file instead of with the symlink. */ | |
1790 if (resolve_symlink(fname, fname_buf) == OK) | |
1791 fname_res = fname_buf; | |
1792 else | |
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1793 #endif |
2267 | 1794 fname_res = fname; |
2175 | 1795 } |
7 | 1796 |
1797 if (list) | |
1798 { | |
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1799 /* use msg() to start the scrolling properly */ |
7 | 1800 msg((char_u *)_("Swap files found:")); |
1801 msg_putchar('\n'); | |
1802 } | |
1803 | |
1804 /* | |
1805 * Do the loop for every directory in 'directory'. | |
1806 * First allocate some memory to put the directory name in. | |
1807 */ | |
1808 dir_name = alloc((unsigned)STRLEN(p_dir) + 1); | |
1809 dirp = p_dir; | |
1810 while (dir_name != NULL && *dirp) | |
1811 { | |
1812 /* | |
1813 * Isolate a directory name from *dirp and put it in dir_name (we know | |
1814 * it is large enough, so use 31000 for length). | |
1815 * Advance dirp to next directory name. | |
1816 */ | |
1817 (void)copy_option_part(&dirp, dir_name, 31000, ","); | |
1818 | |
1819 if (dir_name[0] == '.' && dir_name[1] == NUL) /* check current dir */ | |
1820 { | |
2267 | 1821 if (fname == NULL) |
7 | 1822 { |
1823 #ifdef VMS | |
1824 names[0] = vim_strsave((char_u *)"*_sw%"); | |
1825 #else | |
1826 names[0] = vim_strsave((char_u *)"*.sw?"); | |
1827 #endif | |
1005 | 1828 #if defined(UNIX) || defined(WIN3264) |
1829 /* For Unix names starting with a dot are special. MS-Windows | |
1830 * supports this too, on some file systems. */ | |
7 | 1831 names[1] = vim_strsave((char_u *)".*.sw?"); |
1832 names[2] = vim_strsave((char_u *)".sw?"); | |
1833 num_names = 3; | |
1834 #else | |
1835 # ifdef VMS | |
1836 names[1] = vim_strsave((char_u *)".*_sw%"); | |
1837 num_names = 2; | |
1838 # else | |
1839 num_names = 1; | |
1840 # endif | |
1841 #endif | |
1842 } | |
1843 else | |
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1844 num_names = recov_file_names(names, fname_res, TRUE); |
7 | 1845 } |
1846 else /* check directory dir_name */ | |
1847 { | |
2267 | 1848 if (fname == NULL) |
7 | 1849 { |
1850 #ifdef VMS | |
1851 names[0] = concat_fnames(dir_name, (char_u *)"*_sw%", TRUE); | |
1852 #else | |
1853 names[0] = concat_fnames(dir_name, (char_u *)"*.sw?", TRUE); | |
1854 #endif | |
1005 | 1855 #if defined(UNIX) || defined(WIN3264) |
1856 /* For Unix names starting with a dot are special. MS-Windows | |
1857 * supports this too, on some file systems. */ | |
7 | 1858 names[1] = concat_fnames(dir_name, (char_u *)".*.sw?", TRUE); |
1859 names[2] = concat_fnames(dir_name, (char_u *)".sw?", TRUE); | |
1860 num_names = 3; | |
1861 #else | |
1862 # ifdef VMS | |
1863 names[1] = concat_fnames(dir_name, (char_u *)".*_sw%", TRUE); | |
1864 num_names = 2; | |
1865 # else | |
1866 num_names = 1; | |
1867 # endif | |
1868 #endif | |
1869 } | |
1870 else | |
1871 { | |
1872 #if defined(UNIX) || defined(WIN3264) | |
1873 p = dir_name + STRLEN(dir_name); | |
39 | 1874 if (after_pathsep(dir_name, p) && p[-1] == p[-2]) |
7 | 1875 { |
1876 /* Ends with '//', Use Full path for swap name */ | |
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1877 tail = make_percent_swname(dir_name, fname_res); |
7 | 1878 } |
1879 else | |
1880 #endif | |
1881 { | |
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1882 tail = gettail(fname_res); |
7 | 1883 tail = concat_fnames(dir_name, tail, TRUE); |
1884 } | |
1885 if (tail == NULL) | |
1886 num_names = 0; | |
1887 else | |
1888 { | |
1889 num_names = recov_file_names(names, tail, FALSE); | |
1890 vim_free(tail); | |
1891 } | |
1892 } | |
1893 } | |
1894 | |
1895 /* check for out-of-memory */ | |
1896 for (i = 0; i < num_names; ++i) | |
1897 { | |
1898 if (names[i] == NULL) | |
1899 { | |
1900 for (i = 0; i < num_names; ++i) | |
1901 vim_free(names[i]); | |
1902 num_names = 0; | |
1903 } | |
1904 } | |
1905 if (num_names == 0) | |
1906 num_files = 0; | |
1907 else if (expand_wildcards(num_names, names, &num_files, &files, | |
1908 EW_KEEPALL|EW_FILE|EW_SILENT) == FAIL) | |
1909 num_files = 0; | |
1910 | |
1911 /* | |
1912 * When no swap file found, wildcard expansion might have failed (e.g. | |
1913 * not able to execute the shell). | |
1914 * Try finding a swap file by simply adding ".swp" to the file name. | |
1915 */ | |
2267 | 1916 if (*dirp == NUL && file_count + num_files == 0 && fname != NULL) |
7 | 1917 { |
1918 struct stat st; | |
1919 char_u *swapname; | |
1920 | |
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1921 swapname = modname(fname_res, |
2823 | 1922 #if defined(VMS) |
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1923 (char_u *)"_swp", FALSE |
7 | 1924 #else |
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1925 (char_u *)".swp", TRUE |
7 | 1926 #endif |
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1927 ); |
7 | 1928 if (swapname != NULL) |
1929 { | |
1930 if (mch_stat((char *)swapname, &st) != -1) /* It exists! */ | |
1931 { | |
1932 files = (char_u **)alloc((unsigned)sizeof(char_u *)); | |
1933 if (files != NULL) | |
1934 { | |
1935 files[0] = swapname; | |
1936 swapname = NULL; | |
1937 num_files = 1; | |
1938 } | |
1939 } | |
1940 vim_free(swapname); | |
1941 } | |
1942 } | |
1943 | |
1944 /* | |
1945 * remove swapfile name of the current buffer, it must be ignored | |
1946 */ | |
1947 if (curbuf->b_ml.ml_mfp != NULL | |
1948 && (p = curbuf->b_ml.ml_mfp->mf_fname) != NULL) | |
1949 { | |
1950 for (i = 0; i < num_files; ++i) | |
1951 if (fullpathcmp(p, files[i], TRUE) & FPC_SAME) | |
1952 { | |
1855 | 1953 /* Remove the name from files[i]. Move further entries |
1954 * down. When the array becomes empty free it here, since | |
1955 * FreeWild() won't be called below. */ | |
7 | 1956 vim_free(files[i]); |
1855 | 1957 if (--num_files == 0) |
1958 vim_free(files); | |
1959 else | |
1960 for ( ; i < num_files; ++i) | |
1961 files[i] = files[i + 1]; | |
7 | 1962 } |
1963 } | |
838 | 1964 if (nr > 0) |
7 | 1965 { |
1966 file_count += num_files; | |
1967 if (nr <= file_count) | |
1968 { | |
2267 | 1969 *fname_out = vim_strsave( |
1970 files[nr - 1 + num_files - file_count]); | |
7 | 1971 dirp = (char_u *)""; /* stop searching */ |
1972 } | |
1973 } | |
1974 else if (list) | |
1975 { | |
1976 if (dir_name[0] == '.' && dir_name[1] == NUL) | |
1977 { | |
2267 | 1978 if (fname == NULL) |
7 | 1979 MSG_PUTS(_(" In current directory:\n")); |
1980 else | |
1981 MSG_PUTS(_(" Using specified name:\n")); | |
1982 } | |
1983 else | |
1984 { | |
1985 MSG_PUTS(_(" In directory ")); | |
1986 msg_home_replace(dir_name); | |
1987 MSG_PUTS(":\n"); | |
1988 } | |
1989 | |
1990 if (num_files) | |
1991 { | |
1992 for (i = 0; i < num_files; ++i) | |
1993 { | |
1994 /* print the swap file name */ | |
1995 msg_outnum((long)++file_count); | |
1996 MSG_PUTS(". "); | |
1997 msg_puts(gettail(files[i])); | |
1998 msg_putchar('\n'); | |
1999 (void)swapfile_info(files[i]); | |
2000 } | |
2001 } | |
2002 else | |
2003 MSG_PUTS(_(" -- none --\n")); | |
2004 out_flush(); | |
2005 } | |
2006 else | |
2007 file_count += num_files; | |
2008 | |
2009 for (i = 0; i < num_names; ++i) | |
2010 vim_free(names[i]); | |
838 | 2011 if (num_files > 0) |
2012 FreeWild(num_files, files); | |
7 | 2013 } |
2014 vim_free(dir_name); | |
2015 return file_count; | |
2016 } | |
2017 | |
2018 #if defined(UNIX) || defined(WIN3264) /* Need _very_ long file names */ | |
2019 /* | |
2020 * Append the full path to name with path separators made into percent | |
2021 * signs, to dir. An unnamed buffer is handled as "" (<currentdir>/"") | |
2022 */ | |
2023 static char_u * | |
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2024 make_percent_swname(char_u *dir, char_u *name) |
7 | 2025 { |
39 | 2026 char_u *d, *s, *f; |
7 | 2027 |
2028 f = fix_fname(name != NULL ? name : (char_u *) ""); | |
2029 d = NULL; | |
2030 if (f != NULL) | |
2031 { | |
2032 s = alloc((unsigned)(STRLEN(f) + 1)); | |
2033 if (s != NULL) | |
2034 { | |
39 | 2035 STRCPY(s, f); |
2036 for (d = s; *d != NUL; mb_ptr_adv(d)) | |
2037 if (vim_ispathsep(*d)) | |
2038 *d = '%'; | |
7 | 2039 d = concat_fnames(dir, s, TRUE); |
2040 vim_free(s); | |
2041 } | |
2042 vim_free(f); | |
2043 } | |
2044 return d; | |
2045 } | |
2046 #endif | |
2047 | |
2048 #if (defined(UNIX) || defined(__EMX__) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)) | |
2049 static int process_still_running; | |
2050 #endif | |
2051 | |
2052 /* | |
580 | 2053 * Give information about an existing swap file. |
7 | 2054 * Returns timestamp (0 when unknown). |
2055 */ | |
2056 static time_t | |
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2057 swapfile_info(char_u *fname) |
7 | 2058 { |
2059 struct stat st; | |
2060 int fd; | |
2061 struct block0 b0; | |
2062 time_t x = (time_t)0; | |
1001 | 2063 char *p; |
7 | 2064 #ifdef UNIX |
2065 char_u uname[B0_UNAME_SIZE]; | |
2066 #endif | |
2067 | |
2068 /* print the swap file date */ | |
2069 if (mch_stat((char *)fname, &st) != -1) | |
2070 { | |
2071 #ifdef UNIX | |
2072 /* print name of owner of the file */ | |
2073 if (mch_get_uname(st.st_uid, uname, B0_UNAME_SIZE) == OK) | |
2074 { | |
2075 MSG_PUTS(_(" owned by: ")); | |
2076 msg_outtrans(uname); | |
2077 MSG_PUTS(_(" dated: ")); | |
2078 } | |
2079 else | |
2080 #endif | |
2081 MSG_PUTS(_(" dated: ")); | |
2082 x = st.st_mtime; /* Manx C can't do &st.st_mtime */ | |
1001 | 2083 p = ctime(&x); /* includes '\n' */ |
2084 if (p == NULL) | |
2085 MSG_PUTS("(invalid)\n"); | |
2086 else | |
2087 MSG_PUTS(p); | |
7 | 2088 } |
2089 | |
2090 /* | |
2091 * print the original file name | |
2092 */ | |
2093 fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
2094 if (fd >= 0) | |
2095 { | |
2664 | 2096 if (read_eintr(fd, &b0, sizeof(b0)) == sizeof(b0)) |
7 | 2097 { |
2098 if (STRNCMP(b0.b0_version, "VIM 3.0", 7) == 0) | |
2099 { | |
2100 MSG_PUTS(_(" [from Vim version 3.0]")); | |
2101 } | |
2267 | 2102 else if (ml_check_b0_id(&b0) == FAIL) |
7 | 2103 { |
2104 MSG_PUTS(_(" [does not look like a Vim swap file]")); | |
2105 } | |
2106 else | |
2107 { | |
2108 MSG_PUTS(_(" file name: ")); | |
2109 if (b0.b0_fname[0] == NUL) | |
9 | 2110 MSG_PUTS(_("[No Name]")); |
7 | 2111 else |
2112 msg_outtrans(b0.b0_fname); | |
2113 | |
2114 MSG_PUTS(_("\n modified: ")); | |
2115 MSG_PUTS(b0.b0_dirty ? _("YES") : _("no")); | |
2116 | |
2117 if (*(b0.b0_uname) != NUL) | |
2118 { | |
2119 MSG_PUTS(_("\n user name: ")); | |
2120 msg_outtrans(b0.b0_uname); | |
2121 } | |
2122 | |
2123 if (*(b0.b0_hname) != NUL) | |
2124 { | |
2125 if (*(b0.b0_uname) != NUL) | |
2126 MSG_PUTS(_(" host name: ")); | |
2127 else | |
2128 MSG_PUTS(_("\n host name: ")); | |
2129 msg_outtrans(b0.b0_hname); | |
2130 } | |
2131 | |
2132 if (char_to_long(b0.b0_pid) != 0L) | |
2133 { | |
2134 MSG_PUTS(_("\n process ID: ")); | |
2135 msg_outnum(char_to_long(b0.b0_pid)); | |
2136 #if defined(UNIX) || defined(__EMX__) | |
2137 /* EMX kill() not working correctly, it seems */ | |
2138 if (kill((pid_t)char_to_long(b0.b0_pid), 0) == 0) | |
2139 { | |
2140 MSG_PUTS(_(" (still running)")); | |
2141 # if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) | |
2142 process_still_running = TRUE; | |
2143 # endif | |
2144 } | |
2145 #endif | |
2146 } | |
2147 | |
2148 if (b0_magic_wrong(&b0)) | |
2149 { | |
2150 #if defined(MSDOS) || defined(MSWIN) | |
2151 if (STRNCMP(b0.b0_hname, "PC ", 3) == 0) | |
2152 MSG_PUTS(_("\n [not usable with this version of Vim]")); | |
2153 else | |
2154 #endif | |
2155 MSG_PUTS(_("\n [not usable on this computer]")); | |
2156 } | |
2157 } | |
2158 } | |
2159 else | |
2160 MSG_PUTS(_(" [cannot be read]")); | |
2161 close(fd); | |
2162 } | |
2163 else | |
2164 MSG_PUTS(_(" [cannot be opened]")); | |
2165 msg_putchar('\n'); | |
2166 | |
2167 return x; | |
2168 } | |
2169 | |
2170 static int | |
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2171 recov_file_names(char_u **names, char_u *path, int prepend_dot) |
7 | 2172 { |
2173 int num_names; | |
2174 | |
2175 #ifdef SHORT_FNAME | |
2176 /* | |
2177 * (MS-DOS) always short names | |
2178 */ | |
2179 names[0] = modname(path, (char_u *)".sw?", FALSE); | |
2180 num_names = 1; | |
2181 #else /* !SHORT_FNAME */ | |
2182 /* | |
2183 * (Win32 and Win64) never short names, but do prepend a dot. | |
2184 * (Not MS-DOS or Win32 or Win64) maybe short name, maybe not: Try both. | |
2185 * Only use the short name if it is different. | |
2186 */ | |
2187 char_u *p; | |
2188 int i; | |
2189 # ifndef WIN3264 | |
2190 int shortname = curbuf->b_shortname; | |
2191 | |
2192 curbuf->b_shortname = FALSE; | |
2193 # endif | |
2194 | |
2195 num_names = 0; | |
2196 | |
2197 /* | |
2198 * May also add the file name with a dot prepended, for swap file in same | |
2199 * dir as original file. | |
2200 */ | |
2201 if (prepend_dot) | |
2202 { | |
2203 names[num_names] = modname(path, (char_u *)".sw?", TRUE); | |
2204 if (names[num_names] == NULL) | |
2205 goto end; | |
2206 ++num_names; | |
2207 } | |
2208 | |
2209 /* | |
2210 * Form the normal swap file name pattern by appending ".sw?". | |
2211 */ | |
2212 #ifdef VMS | |
2213 names[num_names] = concat_fnames(path, (char_u *)"_sw%", FALSE); | |
2214 #else | |
2215 names[num_names] = concat_fnames(path, (char_u *)".sw?", FALSE); | |
2216 #endif | |
2217 if (names[num_names] == NULL) | |
2218 goto end; | |
2219 if (num_names >= 1) /* check if we have the same name twice */ | |
2220 { | |
2221 p = names[num_names - 1]; | |
2222 i = (int)STRLEN(names[num_names - 1]) - (int)STRLEN(names[num_names]); | |
2223 if (i > 0) | |
2224 p += i; /* file name has been expanded to full path */ | |
2225 | |
2226 if (STRCMP(p, names[num_names]) != 0) | |
2227 ++num_names; | |
2228 else | |
2229 vim_free(names[num_names]); | |
2230 } | |
2231 else | |
2232 ++num_names; | |
2233 | |
2234 # ifndef WIN3264 | |
2235 /* | |
2236 * Also try with 'shortname' set, in case the file is on a DOS filesystem. | |
2237 */ | |
2238 curbuf->b_shortname = TRUE; | |
2239 #ifdef VMS | |
2240 names[num_names] = modname(path, (char_u *)"_sw%", FALSE); | |
2241 #else | |
2242 names[num_names] = modname(path, (char_u *)".sw?", FALSE); | |
2243 #endif | |
2244 if (names[num_names] == NULL) | |
2245 goto end; | |
2246 | |
2247 /* | |
2248 * Remove the one from 'shortname', if it's the same as with 'noshortname'. | |
2249 */ | |
2250 p = names[num_names]; | |
2251 i = STRLEN(names[num_names]) - STRLEN(names[num_names - 1]); | |
2252 if (i > 0) | |
2253 p += i; /* file name has been expanded to full path */ | |
2254 if (STRCMP(names[num_names - 1], p) == 0) | |
2255 vim_free(names[num_names]); | |
2256 else | |
2257 ++num_names; | |
2258 # endif | |
2259 | |
2260 end: | |
2261 # ifndef WIN3264 | |
2262 curbuf->b_shortname = shortname; | |
2263 # endif | |
2264 | |
2265 #endif /* !SHORT_FNAME */ | |
2266 | |
2267 return num_names; | |
2268 } | |
2269 | |
2270 /* | |
2271 * sync all memlines | |
2272 * | |
2273 * If 'check_file' is TRUE, check if original file exists and was not changed. | |
2274 * If 'check_char' is TRUE, stop syncing when character becomes available, but | |
2275 * always sync at least one block. | |
2276 */ | |
2277 void | |
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2278 ml_sync_all(int check_file, int check_char) |
7 | 2279 { |
2280 buf_T *buf; | |
2281 struct stat st; | |
2282 | |
2283 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
2284 { | |
2285 if (buf->b_ml.ml_mfp == NULL || buf->b_ml.ml_mfp->mf_fname == NULL) | |
2286 continue; /* no file */ | |
2287 | |
2288 ml_flush_line(buf); /* flush buffered line */ | |
2289 /* flush locked block */ | |
2290 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); | |
2291 if (bufIsChanged(buf) && check_file && mf_need_trans(buf->b_ml.ml_mfp) | |
2292 && buf->b_ffname != NULL) | |
2293 { | |
2294 /* | |
2295 * If the original file does not exist anymore or has been changed | |
2296 * call ml_preserve() to get rid of all negative numbered blocks. | |
2297 */ | |
2298 if (mch_stat((char *)buf->b_ffname, &st) == -1 | |
2299 || st.st_mtime != buf->b_mtime_read | |
2241
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2240
diff
changeset
|
2300 || st.st_size != buf->b_orig_size) |
7 | 2301 { |
2302 ml_preserve(buf, FALSE); | |
2303 did_check_timestamps = FALSE; | |
2304 need_check_timestamps = TRUE; /* give message later */ | |
2305 } | |
2306 } | |
2307 if (buf->b_ml.ml_mfp->mf_dirty) | |
2308 { | |
2309 (void)mf_sync(buf->b_ml.ml_mfp, (check_char ? MFS_STOP : 0) | |
2310 | (bufIsChanged(buf) ? MFS_FLUSH : 0)); | |
2311 if (check_char && ui_char_avail()) /* character available now */ | |
2312 break; | |
2313 } | |
2314 } | |
2315 } | |
2316 | |
2317 /* | |
2318 * sync one buffer, including negative blocks | |
2319 * | |
2320 * after this all the blocks are in the swap file | |
2321 * | |
2322 * Used for the :preserve command and when the original file has been | |
2323 * changed or deleted. | |
2324 * | |
2325 * when message is TRUE the success of preserving is reported | |
2326 */ | |
2327 void | |
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2328 ml_preserve(buf_T *buf, int message) |
7 | 2329 { |
2330 bhdr_T *hp; | |
2331 linenr_T lnum; | |
2332 memfile_T *mfp = buf->b_ml.ml_mfp; | |
2333 int status; | |
2334 int got_int_save = got_int; | |
2335 | |
2336 if (mfp == NULL || mfp->mf_fname == NULL) | |
2337 { | |
2338 if (message) | |
2339 EMSG(_("E313: Cannot preserve, there is no swap file")); | |
2340 return; | |
2341 } | |
2342 | |
2343 /* We only want to stop when interrupted here, not when interrupted | |
2344 * before. */ | |
2345 got_int = FALSE; | |
2346 | |
2347 ml_flush_line(buf); /* flush buffered line */ | |
2348 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
2349 status = mf_sync(mfp, MFS_ALL | MFS_FLUSH); | |
2350 | |
2351 /* stack is invalid after mf_sync(.., MFS_ALL) */ | |
2352 buf->b_ml.ml_stack_top = 0; | |
2353 | |
2354 /* | |
2355 * Some of the data blocks may have been changed from negative to | |
2356 * positive block number. In that case the pointer blocks need to be | |
2357 * updated. | |
2358 * | |
2359 * We don't know in which pointer block the references are, so we visit | |
2360 * all data blocks until there are no more translations to be done (or | |
2361 * we hit the end of the file, which can only happen in case a write fails, | |
2362 * e.g. when file system if full). | |
2363 * ml_find_line() does the work by translating the negative block numbers | |
2364 * when getting the first line of each data block. | |
2365 */ | |
2366 if (mf_need_trans(mfp) && !got_int) | |
2367 { | |
2368 lnum = 1; | |
2369 while (mf_need_trans(mfp) && lnum <= buf->b_ml.ml_line_count) | |
2370 { | |
2371 hp = ml_find_line(buf, lnum, ML_FIND); | |
2372 if (hp == NULL) | |
2373 { | |
2374 status = FAIL; | |
2375 goto theend; | |
2376 } | |
2377 CHECK(buf->b_ml.ml_locked_low != lnum, "low != lnum"); | |
2378 lnum = buf->b_ml.ml_locked_high + 1; | |
2379 } | |
2380 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
2381 /* sync the updated pointer blocks */ | |
2382 if (mf_sync(mfp, MFS_ALL | MFS_FLUSH) == FAIL) | |
2383 status = FAIL; | |
2384 buf->b_ml.ml_stack_top = 0; /* stack is invalid now */ | |
2385 } | |
2386 theend: | |
2387 got_int |= got_int_save; | |
2388 | |
2389 if (message) | |
2390 { | |
2391 if (status == OK) | |
2392 MSG(_("File preserved")); | |
2393 else | |
2394 EMSG(_("E314: Preserve failed")); | |
2395 } | |
2396 } | |
2397 | |
2398 /* | |
2399 * NOTE: The pointer returned by the ml_get_*() functions only remains valid | |
2400 * until the next call! | |
2401 * line1 = ml_get(1); | |
2402 * line2 = ml_get(2); // line1 is now invalid! | |
2403 * Make a copy of the line if necessary. | |
2404 */ | |
2405 /* | |
2657 | 2406 * Return a pointer to a (read-only copy of a) line. |
7 | 2407 * |
2408 * On failure an error message is given and IObuff is returned (to avoid | |
2409 * having to check for error everywhere). | |
2410 */ | |
2411 char_u * | |
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parents:
7803
diff
changeset
|
2412 ml_get(linenr_T lnum) |
7 | 2413 { |
2414 return ml_get_buf(curbuf, lnum, FALSE); | |
2415 } | |
2416 | |
2417 /* | |
2657 | 2418 * Return pointer to position "pos". |
7 | 2419 */ |
2420 char_u * | |
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2421 ml_get_pos(pos_T *pos) |
7 | 2422 { |
2423 return (ml_get_buf(curbuf, pos->lnum, FALSE) + pos->col); | |
2424 } | |
2425 | |
2426 /* | |
2657 | 2427 * Return pointer to cursor line. |
7 | 2428 */ |
2429 char_u * | |
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2430 ml_get_curline(void) |
7 | 2431 { |
2432 return ml_get_buf(curbuf, curwin->w_cursor.lnum, FALSE); | |
2433 } | |
2434 | |
2435 /* | |
2657 | 2436 * Return pointer to cursor position. |
7 | 2437 */ |
2438 char_u * | |
7827
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2439 ml_get_cursor(void) |
7 | 2440 { |
2441 return (ml_get_buf(curbuf, curwin->w_cursor.lnum, FALSE) + | |
2442 curwin->w_cursor.col); | |
2443 } | |
2444 | |
2445 /* | |
2657 | 2446 * Return a pointer to a line in a specific buffer |
7 | 2447 * |
2448 * "will_change": if TRUE mark the buffer dirty (chars in the line will be | |
2449 * changed) | |
2450 */ | |
2451 char_u * | |
7827
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2452 ml_get_buf( |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2453 buf_T *buf, |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2454 linenr_T lnum, |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2455 int will_change) /* line will be changed */ |
7 | 2456 { |
1068 | 2457 bhdr_T *hp; |
2458 DATA_BL *dp; | |
2459 char_u *ptr; | |
2460 static int recursive = 0; | |
7 | 2461 |
2462 if (lnum > buf->b_ml.ml_line_count) /* invalid line number */ | |
2463 { | |
1068 | 2464 if (recursive == 0) |
2465 { | |
2466 /* Avoid giving this message for a recursive call, may happen when | |
2467 * the GUI redraws part of the text. */ | |
2468 ++recursive; | |
2469 EMSGN(_("E315: ml_get: invalid lnum: %ld"), lnum); | |
2470 --recursive; | |
2471 } | |
7 | 2472 errorret: |
2473 STRCPY(IObuff, "???"); | |
2474 return IObuff; | |
2475 } | |
2476 if (lnum <= 0) /* pretend line 0 is line 1 */ | |
2477 lnum = 1; | |
2478 | |
2479 if (buf->b_ml.ml_mfp == NULL) /* there are no lines */ | |
2480 return (char_u *)""; | |
2481 | |
2108
3cdf2a653e00
updated for version 7.2.391
Bram Moolenaar <bram@zimbu.org>
parents:
2075
diff
changeset
|
2482 /* |
3cdf2a653e00
updated for version 7.2.391
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parents:
2075
diff
changeset
|
2483 * See if it is the same line as requested last time. |
3cdf2a653e00
updated for version 7.2.391
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parents:
2075
diff
changeset
|
2484 * Otherwise may need to flush last used line. |
3cdf2a653e00
updated for version 7.2.391
Bram Moolenaar <bram@zimbu.org>
parents:
2075
diff
changeset
|
2485 * Don't use the last used line when 'swapfile' is reset, need to load all |
3cdf2a653e00
updated for version 7.2.391
Bram Moolenaar <bram@zimbu.org>
parents:
2075
diff
changeset
|
2486 * blocks. |
3cdf2a653e00
updated for version 7.2.391
Bram Moolenaar <bram@zimbu.org>
parents:
2075
diff
changeset
|
2487 */ |
1066 | 2488 if (buf->b_ml.ml_line_lnum != lnum || mf_dont_release) |
7 | 2489 { |
2490 ml_flush_line(buf); | |
2491 | |
2492 /* | |
2493 * Find the data block containing the line. | |
2494 * This also fills the stack with the blocks from the root to the data | |
2495 * block and releases any locked block. | |
2496 */ | |
2497 if ((hp = ml_find_line(buf, lnum, ML_FIND)) == NULL) | |
2498 { | |
1068 | 2499 if (recursive == 0) |
2500 { | |
2501 /* Avoid giving this message for a recursive call, may happen | |
2502 * when the GUI redraws part of the text. */ | |
2503 ++recursive; | |
2504 EMSGN(_("E316: ml_get: cannot find line %ld"), lnum); | |
2505 --recursive; | |
2506 } | |
7 | 2507 goto errorret; |
2508 } | |
2509 | |
2510 dp = (DATA_BL *)(hp->bh_data); | |
2511 | |
2512 ptr = (char_u *)dp + ((dp->db_index[lnum - buf->b_ml.ml_locked_low]) & DB_INDEX_MASK); | |
2513 buf->b_ml.ml_line_ptr = ptr; | |
2514 buf->b_ml.ml_line_lnum = lnum; | |
2515 buf->b_ml.ml_flags &= ~ML_LINE_DIRTY; | |
2516 } | |
2517 if (will_change) | |
2518 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
2519 | |
2520 return buf->b_ml.ml_line_ptr; | |
2521 } | |
2522 | |
2523 /* | |
2524 * Check if a line that was just obtained by a call to ml_get | |
2525 * is in allocated memory. | |
2526 */ | |
2527 int | |
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2528 ml_line_alloced(void) |
7 | 2529 { |
2530 return (curbuf->b_ml.ml_flags & ML_LINE_DIRTY); | |
2531 } | |
2532 | |
2533 /* | |
2534 * Append a line after lnum (may be 0 to insert a line in front of the file). | |
2535 * "line" does not need to be allocated, but can't be another line in a | |
2536 * buffer, unlocking may make it invalid. | |
2537 * | |
2538 * newfile: TRUE when starting to edit a new file, meaning that pe_old_lnum | |
2539 * will be set for recovery | |
2540 * Check: The caller of this function should probably also call | |
2541 * appended_lines(). | |
2542 * | |
2543 * return FAIL for failure, OK otherwise | |
2544 */ | |
2545 int | |
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parents:
7803
diff
changeset
|
2546 ml_append( |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2547 linenr_T lnum, /* append after this line (can be 0) */ |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2548 char_u *line, /* text of the new line */ |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2549 colnr_T len, /* length of new line, including NUL, or 0 */ |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2550 int newfile) /* flag, see above */ |
7 | 2551 { |
2552 /* When starting up, we might still need to create the memfile */ | |
2394
a3aca345aafa
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Bram Moolenaar <bram@vim.org>
parents:
2360
diff
changeset
|
2553 if (curbuf->b_ml.ml_mfp == NULL && open_buffer(FALSE, NULL, 0) == FAIL) |
7 | 2554 return FAIL; |
2555 | |
2556 if (curbuf->b_ml.ml_line_lnum != 0) | |
2557 ml_flush_line(curbuf); | |
2558 return ml_append_int(curbuf, lnum, line, len, newfile, FALSE); | |
2559 } | |
2560 | |
748 | 2561 #if defined(FEAT_SPELL) || defined(PROTO) |
625 | 2562 /* |
2563 * Like ml_append() but for an arbitrary buffer. The buffer must already have | |
2564 * a memline. | |
2565 */ | |
2566 int | |
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2567 ml_append_buf( |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2568 buf_T *buf, |
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parents:
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diff
changeset
|
2569 linenr_T lnum, /* append after this line (can be 0) */ |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2570 char_u *line, /* text of the new line */ |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
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parents:
7803
diff
changeset
|
2571 colnr_T len, /* length of new line, including NUL, or 0 */ |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2572 int newfile) /* flag, see above */ |
625 | 2573 { |
2574 if (buf->b_ml.ml_mfp == NULL) | |
2575 return FAIL; | |
2576 | |
2577 if (buf->b_ml.ml_line_lnum != 0) | |
2578 ml_flush_line(buf); | |
2579 return ml_append_int(buf, lnum, line, len, newfile, FALSE); | |
2580 } | |
2581 #endif | |
2582 | |
7 | 2583 static int |
7827
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2584 ml_append_int( |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2585 buf_T *buf, |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2586 linenr_T lnum, /* append after this line (can be 0) */ |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2587 char_u *line, /* text of the new line */ |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2588 colnr_T len, /* length of line, including NUL, or 0 */ |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2589 int newfile, /* flag, see above */ |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2590 int mark) /* mark the new line */ |
7 | 2591 { |
2592 int i; | |
2593 int line_count; /* number of indexes in current block */ | |
2594 int offset; | |
2595 int from, to; | |
2596 int space_needed; /* space needed for new line */ | |
2597 int page_size; | |
2598 int page_count; | |
2599 int db_idx; /* index for lnum in data block */ | |
2600 bhdr_T *hp; | |
2601 memfile_T *mfp; | |
2602 DATA_BL *dp; | |
2603 PTR_BL *pp; | |
2604 infoptr_T *ip; | |
2605 | |
2606 /* lnum out of range */ | |
2607 if (lnum > buf->b_ml.ml_line_count || buf->b_ml.ml_mfp == NULL) | |
2608 return FAIL; | |
2609 | |
2610 if (lowest_marked && lowest_marked > lnum) | |
2611 lowest_marked = lnum + 1; | |
2612 | |
2613 if (len == 0) | |
2614 len = (colnr_T)STRLEN(line) + 1; /* space needed for the text */ | |
2615 space_needed = len + INDEX_SIZE; /* space needed for text + index */ | |
2616 | |
2617 mfp = buf->b_ml.ml_mfp; | |
2618 page_size = mfp->mf_page_size; | |
2619 | |
2620 /* | |
2621 * find the data block containing the previous line | |
2622 * This also fills the stack with the blocks from the root to the data block | |
2623 * This also releases any locked block. | |
2624 */ | |
2625 if ((hp = ml_find_line(buf, lnum == 0 ? (linenr_T)1 : lnum, | |
2626 ML_INSERT)) == NULL) | |
2627 return FAIL; | |
2628 | |
2629 buf->b_ml.ml_flags &= ~ML_EMPTY; | |
2630 | |
2631 if (lnum == 0) /* got line one instead, correct db_idx */ | |
2632 db_idx = -1; /* careful, it is negative! */ | |
2633 else | |
2634 db_idx = lnum - buf->b_ml.ml_locked_low; | |
2635 /* get line count before the insertion */ | |
2636 line_count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low; | |
2637 | |
2638 dp = (DATA_BL *)(hp->bh_data); | |
2639 | |
2640 /* | |
2641 * If | |
2642 * - there is not enough room in the current block | |
2643 * - appending to the last line in the block | |
2644 * - not appending to the last line in the file | |
2645 * insert in front of the next block. | |
2646 */ | |
2647 if ((int)dp->db_free < space_needed && db_idx == line_count - 1 | |
2648 && lnum < buf->b_ml.ml_line_count) | |
2649 { | |
2650 /* | |
2651 * Now that the line is not going to be inserted in the block that we | |
2652 * expected, the line count has to be adjusted in the pointer blocks | |
2653 * by using ml_locked_lineadd. | |
2654 */ | |
2655 --(buf->b_ml.ml_locked_lineadd); | |
2656 --(buf->b_ml.ml_locked_high); | |
2657 if ((hp = ml_find_line(buf, lnum + 1, ML_INSERT)) == NULL) | |
2658 return FAIL; | |
2659 | |
2660 db_idx = -1; /* careful, it is negative! */ | |
2661 /* get line count before the insertion */ | |
2662 line_count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low; | |
2663 CHECK(buf->b_ml.ml_locked_low != lnum + 1, "locked_low != lnum + 1"); | |
2664 | |
2665 dp = (DATA_BL *)(hp->bh_data); | |
2666 } | |
2667 | |
2668 ++buf->b_ml.ml_line_count; | |
2669 | |
2670 if ((int)dp->db_free >= space_needed) /* enough room in data block */ | |
2671 { | |
2672 /* | |
2673 * Insert new line in existing data block, or in data block allocated above. | |
2674 */ | |
2675 dp->db_txt_start -= len; | |
2676 dp->db_free -= space_needed; | |
2677 ++(dp->db_line_count); | |
2678 | |
2679 /* | |
2680 * move the text of the lines that follow to the front | |
2681 * adjust the indexes of the lines that follow | |
2682 */ | |
2683 if (line_count > db_idx + 1) /* if there are following lines */ | |
2684 { | |
2685 /* | |
2686 * Offset is the start of the previous line. | |
2687 * This will become the character just after the new line. | |
2688 */ | |
2689 if (db_idx < 0) | |
2690 offset = dp->db_txt_end; | |
2691 else | |
2692 offset = ((dp->db_index[db_idx]) & DB_INDEX_MASK); | |
2693 mch_memmove((char *)dp + dp->db_txt_start, | |
2694 (char *)dp + dp->db_txt_start + len, | |
2695 (size_t)(offset - (dp->db_txt_start + len))); | |
2696 for (i = line_count - 1; i > db_idx; --i) | |
2697 dp->db_index[i + 1] = dp->db_index[i] - len; | |
2698 dp->db_index[db_idx + 1] = offset - len; | |
2699 } | |
2700 else /* add line at the end */ | |
2701 dp->db_index[db_idx + 1] = dp->db_txt_start; | |
2702 | |
2703 /* | |
2704 * copy the text into the block | |
2705 */ | |
2706 mch_memmove((char *)dp + dp->db_index[db_idx + 1], line, (size_t)len); | |
2707 if (mark) | |
2708 dp->db_index[db_idx + 1] |= DB_MARKED; | |
2709 | |
2710 /* | |
2711 * Mark the block dirty. | |
2712 */ | |
2713 buf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
2714 if (!newfile) | |
2715 buf->b_ml.ml_flags |= ML_LOCKED_POS; | |
2716 } | |
2717 else /* not enough space in data block */ | |
2718 { | |
2719 /* | |
2720 * If there is not enough room we have to create a new data block and copy some | |
2721 * lines into it. | |
2722 * Then we have to insert an entry in the pointer block. | |
2723 * If this pointer block also is full, we go up another block, and so on, up | |
2724 * to the root if necessary. | |
2725 * The line counts in the pointer blocks have already been adjusted by | |
2726 * ml_find_line(). | |
2727 */ | |
2728 long line_count_left, line_count_right; | |
2729 int page_count_left, page_count_right; | |
2730 bhdr_T *hp_left; | |
2731 bhdr_T *hp_right; | |
2732 bhdr_T *hp_new; | |
2733 int lines_moved; | |
2734 int data_moved = 0; /* init to shut up gcc */ | |
2735 int total_moved = 0; /* init to shut up gcc */ | |
2736 DATA_BL *dp_right, *dp_left; | |
2737 int stack_idx; | |
2738 int in_left; | |
2739 int lineadd; | |
2740 blocknr_T bnum_left, bnum_right; | |
2741 linenr_T lnum_left, lnum_right; | |
2742 int pb_idx; | |
2743 PTR_BL *pp_new; | |
2744 | |
2745 /* | |
2746 * We are going to allocate a new data block. Depending on the | |
2747 * situation it will be put to the left or right of the existing | |
2748 * block. If possible we put the new line in the left block and move | |
2749 * the lines after it to the right block. Otherwise the new line is | |
2750 * also put in the right block. This method is more efficient when | |
2751 * inserting a lot of lines at one place. | |
2752 */ | |
2753 if (db_idx < 0) /* left block is new, right block is existing */ | |
2754 { | |
2755 lines_moved = 0; | |
2756 in_left = TRUE; | |
2757 /* space_needed does not change */ | |
2758 } | |
2759 else /* left block is existing, right block is new */ | |
2760 { | |
2761 lines_moved = line_count - db_idx - 1; | |
2762 if (lines_moved == 0) | |
2763 in_left = FALSE; /* put new line in right block */ | |
2764 /* space_needed does not change */ | |
2765 else | |
2766 { | |
2767 data_moved = ((dp->db_index[db_idx]) & DB_INDEX_MASK) - | |
2768 dp->db_txt_start; | |
2769 total_moved = data_moved + lines_moved * INDEX_SIZE; | |
2770 if ((int)dp->db_free + total_moved >= space_needed) | |
2771 { | |
2772 in_left = TRUE; /* put new line in left block */ | |
2773 space_needed = total_moved; | |
2774 } | |
2775 else | |
2776 { | |
2777 in_left = FALSE; /* put new line in right block */ | |
2778 space_needed += total_moved; | |
2779 } | |
2780 } | |
2781 } | |
2782 | |
2783 page_count = ((space_needed + HEADER_SIZE) + page_size - 1) / page_size; | |
2784 if ((hp_new = ml_new_data(mfp, newfile, page_count)) == NULL) | |
2785 { | |
2786 /* correct line counts in pointer blocks */ | |
2787 --(buf->b_ml.ml_locked_lineadd); | |
2788 --(buf->b_ml.ml_locked_high); | |
2789 return FAIL; | |
2790 } | |
2791 if (db_idx < 0) /* left block is new */ | |
2792 { | |
2793 hp_left = hp_new; | |
2794 hp_right = hp; | |
2795 line_count_left = 0; | |
2796 line_count_right = line_count; | |
2797 } | |
2798 else /* right block is new */ | |
2799 { | |
2800 hp_left = hp; | |
2801 hp_right = hp_new; | |
2802 line_count_left = line_count; | |
2803 line_count_right = 0; | |
2804 } | |
2805 dp_right = (DATA_BL *)(hp_right->bh_data); | |
2806 dp_left = (DATA_BL *)(hp_left->bh_data); | |
2807 bnum_left = hp_left->bh_bnum; | |
2808 bnum_right = hp_right->bh_bnum; | |
2809 page_count_left = hp_left->bh_page_count; | |
2810 page_count_right = hp_right->bh_page_count; | |
2811 | |
2812 /* | |
2813 * May move the new line into the right/new block. | |
2814 */ | |
2815 if (!in_left) | |
2816 { | |
2817 dp_right->db_txt_start -= len; | |
2818 dp_right->db_free -= len + INDEX_SIZE; | |
2819 dp_right->db_index[0] = dp_right->db_txt_start; | |
2820 if (mark) | |
2821 dp_right->db_index[0] |= DB_MARKED; | |
2822 | |
2823 mch_memmove((char *)dp_right + dp_right->db_txt_start, | |
2824 line, (size_t)len); | |
2825 ++line_count_right; | |
2826 } | |
2827 /* | |
2828 * may move lines from the left/old block to the right/new one. | |
2829 */ | |
2830 if (lines_moved) | |
2831 { | |
2832 /* | |
2833 */ | |
2834 dp_right->db_txt_start -= data_moved; | |
2835 dp_right->db_free -= total_moved; | |
2836 mch_memmove((char *)dp_right + dp_right->db_txt_start, | |
2837 (char *)dp_left + dp_left->db_txt_start, | |
2838 (size_t)data_moved); | |
2839 offset = dp_right->db_txt_start - dp_left->db_txt_start; | |
2840 dp_left->db_txt_start += data_moved; | |
2841 dp_left->db_free += total_moved; | |
2842 | |
2843 /* | |
2844 * update indexes in the new block | |
2845 */ | |
2846 for (to = line_count_right, from = db_idx + 1; | |
2847 from < line_count_left; ++from, ++to) | |
2848 dp_right->db_index[to] = dp->db_index[from] + offset; | |
2849 line_count_right += lines_moved; | |
2850 line_count_left -= lines_moved; | |
2851 } | |
2852 | |
2853 /* | |
2854 * May move the new line into the left (old or new) block. | |
2855 */ | |
2856 if (in_left) | |
2857 { | |
2858 dp_left->db_txt_start -= len; | |
2859 dp_left->db_free -= len + INDEX_SIZE; | |
2860 dp_left->db_index[line_count_left] = dp_left->db_txt_start; | |
2861 if (mark) | |
2862 dp_left->db_index[line_count_left] |= DB_MARKED; | |
2863 mch_memmove((char *)dp_left + dp_left->db_txt_start, | |
2864 line, (size_t)len); | |
2865 ++line_count_left; | |
2866 } | |
2867 | |
2868 if (db_idx < 0) /* left block is new */ | |
2869 { | |
2870 lnum_left = lnum + 1; | |
2871 lnum_right = 0; | |
2872 } | |
2873 else /* right block is new */ | |
2874 { | |
2875 lnum_left = 0; | |
2876 if (in_left) | |
2877 lnum_right = lnum + 2; | |
2878 else | |
2879 lnum_right = lnum + 1; | |
2880 } | |
2881 dp_left->db_line_count = line_count_left; | |
2882 dp_right->db_line_count = line_count_right; | |
2883 | |
2884 /* | |
2885 * release the two data blocks | |
2886 * The new one (hp_new) already has a correct blocknumber. | |
2887 * The old one (hp, in ml_locked) gets a positive blocknumber if | |
2888 * we changed it and we are not editing a new file. | |
2889 */ | |
2890 if (lines_moved || in_left) | |
2891 buf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
2892 if (!newfile && db_idx >= 0 && in_left) | |
2893 buf->b_ml.ml_flags |= ML_LOCKED_POS; | |
2894 mf_put(mfp, hp_new, TRUE, FALSE); | |
2895 | |
2896 /* | |
2897 * flush the old data block | |
2898 * set ml_locked_lineadd to 0, because the updating of the | |
2899 * pointer blocks is done below | |
2900 */ | |
2901 lineadd = buf->b_ml.ml_locked_lineadd; | |
2902 buf->b_ml.ml_locked_lineadd = 0; | |
2903 ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush data block */ | |
2904 | |
2905 /* | |
2906 * update pointer blocks for the new data block | |
2907 */ | |
2908 for (stack_idx = buf->b_ml.ml_stack_top - 1; stack_idx >= 0; | |
2909 --stack_idx) | |
2910 { | |
2911 ip = &(buf->b_ml.ml_stack[stack_idx]); | |
2912 pb_idx = ip->ip_index; | |
2913 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
2914 return FAIL; | |
2915 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
2916 if (pp->pb_id != PTR_ID) | |
2917 { | |
2918 EMSG(_("E317: pointer block id wrong 3")); | |
2919 mf_put(mfp, hp, FALSE, FALSE); | |
2920 return FAIL; | |
2921 } | |
2922 /* | |
2923 * TODO: If the pointer block is full and we are adding at the end | |
2924 * try to insert in front of the next block | |
2925 */ | |
2926 /* block not full, add one entry */ | |
2927 if (pp->pb_count < pp->pb_count_max) | |
2928 { | |
2929 if (pb_idx + 1 < (int)pp->pb_count) | |
2930 mch_memmove(&pp->pb_pointer[pb_idx + 2], | |
2931 &pp->pb_pointer[pb_idx + 1], | |
2932 (size_t)(pp->pb_count - pb_idx - 1) * sizeof(PTR_EN)); | |
2933 ++pp->pb_count; | |
2934 pp->pb_pointer[pb_idx].pe_line_count = line_count_left; | |
2935 pp->pb_pointer[pb_idx].pe_bnum = bnum_left; | |
2936 pp->pb_pointer[pb_idx].pe_page_count = page_count_left; | |
2937 pp->pb_pointer[pb_idx + 1].pe_line_count = line_count_right; | |
2938 pp->pb_pointer[pb_idx + 1].pe_bnum = bnum_right; | |
2939 pp->pb_pointer[pb_idx + 1].pe_page_count = page_count_right; | |
2940 | |
2941 if (lnum_left != 0) | |
2942 pp->pb_pointer[pb_idx].pe_old_lnum = lnum_left; | |
2943 if (lnum_right != 0) | |
2944 pp->pb_pointer[pb_idx + 1].pe_old_lnum = lnum_right; | |
2945 | |
2946 mf_put(mfp, hp, TRUE, FALSE); | |
2947 buf->b_ml.ml_stack_top = stack_idx + 1; /* truncate stack */ | |
2948 | |
2949 if (lineadd) | |
2950 { | |
2951 --(buf->b_ml.ml_stack_top); | |
1167 | 2952 /* fix line count for rest of blocks in the stack */ |
7 | 2953 ml_lineadd(buf, lineadd); |
2954 /* fix stack itself */ | |
2955 buf->b_ml.ml_stack[buf->b_ml.ml_stack_top].ip_high += | |
2956 lineadd; | |
2957 ++(buf->b_ml.ml_stack_top); | |
2958 } | |
2959 | |
2960 /* | |
2961 * We are finished, break the loop here. | |
2962 */ | |
2963 break; | |
2964 } | |
2965 else /* pointer block full */ | |
2966 { | |
2967 /* | |
2968 * split the pointer block | |
2969 * allocate a new pointer block | |
2970 * move some of the pointer into the new block | |
2971 * prepare for updating the parent block | |
2972 */ | |
2973 for (;;) /* do this twice when splitting block 1 */ | |
2974 { | |
2975 hp_new = ml_new_ptr(mfp); | |
2976 if (hp_new == NULL) /* TODO: try to fix tree */ | |
2977 return FAIL; | |
2978 pp_new = (PTR_BL *)(hp_new->bh_data); | |
2979 | |
2980 if (hp->bh_bnum != 1) | |
2981 break; | |
2982 | |
2983 /* | |
2984 * if block 1 becomes full the tree is given an extra level | |
2985 * The pointers from block 1 are moved into the new block. | |
2986 * block 1 is updated to point to the new block | |
2987 * then continue to split the new block | |
2988 */ | |
2989 mch_memmove(pp_new, pp, (size_t)page_size); | |
2990 pp->pb_count = 1; | |
2991 pp->pb_pointer[0].pe_bnum = hp_new->bh_bnum; | |
2992 pp->pb_pointer[0].pe_line_count = buf->b_ml.ml_line_count; | |
2993 pp->pb_pointer[0].pe_old_lnum = 1; | |
2994 pp->pb_pointer[0].pe_page_count = 1; | |
2995 mf_put(mfp, hp, TRUE, FALSE); /* release block 1 */ | |
2996 hp = hp_new; /* new block is to be split */ | |
2997 pp = pp_new; | |
2998 CHECK(stack_idx != 0, _("stack_idx should be 0")); | |
2999 ip->ip_index = 0; | |
3000 ++stack_idx; /* do block 1 again later */ | |
3001 } | |
3002 /* | |
3003 * move the pointers after the current one to the new block | |
3004 * If there are none, the new entry will be in the new block. | |
3005 */ | |
3006 total_moved = pp->pb_count - pb_idx - 1; | |
3007 if (total_moved) | |
3008 { | |
3009 mch_memmove(&pp_new->pb_pointer[0], | |
3010 &pp->pb_pointer[pb_idx + 1], | |
3011 (size_t)(total_moved) * sizeof(PTR_EN)); | |
3012 pp_new->pb_count = total_moved; | |
3013 pp->pb_count -= total_moved - 1; | |
3014 pp->pb_pointer[pb_idx + 1].pe_bnum = bnum_right; | |
3015 pp->pb_pointer[pb_idx + 1].pe_line_count = line_count_right; | |
3016 pp->pb_pointer[pb_idx + 1].pe_page_count = page_count_right; | |
3017 if (lnum_right) | |
3018 pp->pb_pointer[pb_idx + 1].pe_old_lnum = lnum_right; | |
3019 } | |
3020 else | |
3021 { | |
3022 pp_new->pb_count = 1; | |
3023 pp_new->pb_pointer[0].pe_bnum = bnum_right; | |
3024 pp_new->pb_pointer[0].pe_line_count = line_count_right; | |
3025 pp_new->pb_pointer[0].pe_page_count = page_count_right; | |
3026 pp_new->pb_pointer[0].pe_old_lnum = lnum_right; | |
3027 } | |
3028 pp->pb_pointer[pb_idx].pe_bnum = bnum_left; | |
3029 pp->pb_pointer[pb_idx].pe_line_count = line_count_left; | |
3030 pp->pb_pointer[pb_idx].pe_page_count = page_count_left; | |
3031 if (lnum_left) | |
3032 pp->pb_pointer[pb_idx].pe_old_lnum = lnum_left; | |
3033 lnum_left = 0; | |
3034 lnum_right = 0; | |
3035 | |
3036 /* | |
3037 * recompute line counts | |
3038 */ | |
3039 line_count_right = 0; | |
3040 for (i = 0; i < (int)pp_new->pb_count; ++i) | |
3041 line_count_right += pp_new->pb_pointer[i].pe_line_count; | |
3042 line_count_left = 0; | |
3043 for (i = 0; i < (int)pp->pb_count; ++i) | |
3044 line_count_left += pp->pb_pointer[i].pe_line_count; | |
3045 | |
3046 bnum_left = hp->bh_bnum; | |
3047 bnum_right = hp_new->bh_bnum; | |
3048 page_count_left = 1; | |
3049 page_count_right = 1; | |
3050 mf_put(mfp, hp, TRUE, FALSE); | |
3051 mf_put(mfp, hp_new, TRUE, FALSE); | |
3052 } | |
3053 } | |
3054 | |
3055 /* | |
3056 * Safety check: fallen out of for loop? | |
3057 */ | |
3058 if (stack_idx < 0) | |
3059 { | |
3060 EMSG(_("E318: Updated too many blocks?")); | |
3061 buf->b_ml.ml_stack_top = 0; /* invalidate stack */ | |
3062 } | |
3063 } | |
3064 | |
3065 #ifdef FEAT_BYTEOFF | |
3066 /* The line was inserted below 'lnum' */ | |
3067 ml_updatechunk(buf, lnum + 1, (long)len, ML_CHNK_ADDLINE); | |
3068 #endif | |
3069 #ifdef FEAT_NETBEANS_INTG | |
2210 | 3070 if (netbeans_active()) |
7 | 3071 { |
3072 if (STRLEN(line) > 0) | |
835 | 3073 netbeans_inserted(buf, lnum+1, (colnr_T)0, line, (int)STRLEN(line)); |
34 | 3074 netbeans_inserted(buf, lnum+1, (colnr_T)STRLEN(line), |
7 | 3075 (char_u *)"\n", 1); |
3076 } | |
3077 #endif | |
3078 return OK; | |
3079 } | |
3080 | |
3081 /* | |
625 | 3082 * Replace line lnum, with buffering, in current buffer. |
7 | 3083 * |
720 | 3084 * If "copy" is TRUE, make a copy of the line, otherwise the line has been |
7 | 3085 * copied to allocated memory already. |
3086 * | |
3087 * Check: The caller of this function should probably also call | |
3088 * changed_lines(), unless update_screen(NOT_VALID) is used. | |
3089 * | |
3090 * return FAIL for failure, OK otherwise | |
3091 */ | |
3092 int | |
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parents:
7803
diff
changeset
|
3093 ml_replace(linenr_T lnum, char_u *line, int copy) |
7 | 3094 { |
3095 if (line == NULL) /* just checking... */ | |
3096 return FAIL; | |
3097 | |
3098 /* When starting up, we might still need to create the memfile */ | |
2394
a3aca345aafa
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diff
changeset
|
3099 if (curbuf->b_ml.ml_mfp == NULL && open_buffer(FALSE, NULL, 0) == FAIL) |
7 | 3100 return FAIL; |
3101 | |
3102 if (copy && (line = vim_strsave(line)) == NULL) /* allocate memory */ | |
3103 return FAIL; | |
3104 #ifdef FEAT_NETBEANS_INTG | |
2210 | 3105 if (netbeans_active()) |
7 | 3106 { |
3107 netbeans_removed(curbuf, lnum, 0, (long)STRLEN(ml_get(lnum))); | |
835 | 3108 netbeans_inserted(curbuf, lnum, 0, line, (int)STRLEN(line)); |
7 | 3109 } |
3110 #endif | |
3111 if (curbuf->b_ml.ml_line_lnum != lnum) /* other line buffered */ | |
3112 ml_flush_line(curbuf); /* flush it */ | |
3113 else if (curbuf->b_ml.ml_flags & ML_LINE_DIRTY) /* same line allocated */ | |
3114 vim_free(curbuf->b_ml.ml_line_ptr); /* free it */ | |
3115 curbuf->b_ml.ml_line_ptr = line; | |
3116 curbuf->b_ml.ml_line_lnum = lnum; | |
3117 curbuf->b_ml.ml_flags = (curbuf->b_ml.ml_flags | ML_LINE_DIRTY) & ~ML_EMPTY; | |
3118 | |
3119 return OK; | |
3120 } | |
3121 | |
3122 /* | |
625 | 3123 * Delete line 'lnum' in the current buffer. |
7 | 3124 * |
3125 * Check: The caller of this function should probably also call | |
3126 * deleted_lines() after this. | |
3127 * | |
3128 * return FAIL for failure, OK otherwise | |
3129 */ | |
3130 int | |
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parents:
7803
diff
changeset
|
3131 ml_delete(linenr_T lnum, int message) |
7 | 3132 { |
3133 ml_flush_line(curbuf); | |
3134 return ml_delete_int(curbuf, lnum, message); | |
3135 } | |
3136 | |
3137 static int | |
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parents:
7803
diff
changeset
|
3138 ml_delete_int(buf_T *buf, linenr_T lnum, int message) |
7 | 3139 { |
3140 bhdr_T *hp; | |
3141 memfile_T *mfp; | |
3142 DATA_BL *dp; | |
3143 PTR_BL *pp; | |
3144 infoptr_T *ip; | |
3145 int count; /* number of entries in block */ | |
3146 int idx; | |
3147 int stack_idx; | |
3148 int text_start; | |
3149 int line_start; | |
3150 long line_size; | |
3151 int i; | |
3152 | |
3153 if (lnum < 1 || lnum > buf->b_ml.ml_line_count) | |
3154 return FAIL; | |
3155 | |
3156 if (lowest_marked && lowest_marked > lnum) | |
3157 lowest_marked--; | |
3158 | |
3159 /* | |
3160 * If the file becomes empty the last line is replaced by an empty line. | |
3161 */ | |
3162 if (buf->b_ml.ml_line_count == 1) /* file becomes empty */ | |
3163 { | |
3164 if (message | |
3165 #ifdef FEAT_NETBEANS_INTG | |
3166 && !netbeansSuppressNoLines | |
3167 #endif | |
3168 ) | |
680 | 3169 set_keep_msg((char_u *)_(no_lines_msg), 0); |
3170 | |
4352 | 3171 /* FEAT_BYTEOFF already handled in there, don't worry 'bout it below */ |
7 | 3172 i = ml_replace((linenr_T)1, (char_u *)"", TRUE); |
3173 buf->b_ml.ml_flags |= ML_EMPTY; | |
3174 | |
3175 return i; | |
3176 } | |
3177 | |
3178 /* | |
3179 * find the data block containing the line | |
3180 * This also fills the stack with the blocks from the root to the data block | |
3181 * This also releases any locked block. | |
3182 */ | |
3183 mfp = buf->b_ml.ml_mfp; | |
3184 if (mfp == NULL) | |
3185 return FAIL; | |
3186 | |
3187 if ((hp = ml_find_line(buf, lnum, ML_DELETE)) == NULL) | |
3188 return FAIL; | |
3189 | |
3190 dp = (DATA_BL *)(hp->bh_data); | |
3191 /* compute line count before the delete */ | |
3192 count = (long)(buf->b_ml.ml_locked_high) | |
3193 - (long)(buf->b_ml.ml_locked_low) + 2; | |
3194 idx = lnum - buf->b_ml.ml_locked_low; | |
3195 | |
3196 --buf->b_ml.ml_line_count; | |
3197 | |
3198 line_start = ((dp->db_index[idx]) & DB_INDEX_MASK); | |
3199 if (idx == 0) /* first line in block, text at the end */ | |
3200 line_size = dp->db_txt_end - line_start; | |
3201 else | |
3202 line_size = ((dp->db_index[idx - 1]) & DB_INDEX_MASK) - line_start; | |
3203 | |
3204 #ifdef FEAT_NETBEANS_INTG | |
2210 | 3205 if (netbeans_active()) |
34 | 3206 netbeans_removed(buf, lnum, 0, (long)line_size); |
7 | 3207 #endif |
3208 | |
3209 /* | |
3210 * special case: If there is only one line in the data block it becomes empty. | |
3211 * Then we have to remove the entry, pointing to this data block, from the | |
3212 * pointer block. If this pointer block also becomes empty, we go up another | |
3213 * block, and so on, up to the root if necessary. | |
3214 * The line counts in the pointer blocks have already been adjusted by | |
3215 * ml_find_line(). | |
3216 */ | |
3217 if (count == 1) | |
3218 { | |
3219 mf_free(mfp, hp); /* free the data block */ | |
3220 buf->b_ml.ml_locked = NULL; | |
3221 | |
2823 | 3222 for (stack_idx = buf->b_ml.ml_stack_top - 1; stack_idx >= 0; |
3223 --stack_idx) | |
7 | 3224 { |
3225 buf->b_ml.ml_stack_top = 0; /* stack is invalid when failing */ | |
3226 ip = &(buf->b_ml.ml_stack[stack_idx]); | |
3227 idx = ip->ip_index; | |
3228 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
3229 return FAIL; | |
3230 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
3231 if (pp->pb_id != PTR_ID) | |
3232 { | |
3233 EMSG(_("E317: pointer block id wrong 4")); | |
3234 mf_put(mfp, hp, FALSE, FALSE); | |
3235 return FAIL; | |
3236 } | |
3237 count = --(pp->pb_count); | |
3238 if (count == 0) /* the pointer block becomes empty! */ | |
3239 mf_free(mfp, hp); | |
3240 else | |
3241 { | |
3242 if (count != idx) /* move entries after the deleted one */ | |
3243 mch_memmove(&pp->pb_pointer[idx], &pp->pb_pointer[idx + 1], | |
3244 (size_t)(count - idx) * sizeof(PTR_EN)); | |
3245 mf_put(mfp, hp, TRUE, FALSE); | |
3246 | |
3247 buf->b_ml.ml_stack_top = stack_idx; /* truncate stack */ | |
1167 | 3248 /* fix line count for rest of blocks in the stack */ |
3249 if (buf->b_ml.ml_locked_lineadd != 0) | |
7 | 3250 { |
3251 ml_lineadd(buf, buf->b_ml.ml_locked_lineadd); | |
3252 buf->b_ml.ml_stack[buf->b_ml.ml_stack_top].ip_high += | |
1167 | 3253 buf->b_ml.ml_locked_lineadd; |
7 | 3254 } |
3255 ++(buf->b_ml.ml_stack_top); | |
3256 | |
3257 break; | |
3258 } | |
3259 } | |
3260 CHECK(stack_idx < 0, _("deleted block 1?")); | |
3261 } | |
3262 else | |
3263 { | |
3264 /* | |
3265 * delete the text by moving the next lines forwards | |
3266 */ | |
3267 text_start = dp->db_txt_start; | |
3268 mch_memmove((char *)dp + text_start + line_size, | |
3269 (char *)dp + text_start, (size_t)(line_start - text_start)); | |
3270 | |
3271 /* | |
3272 * delete the index by moving the next indexes backwards | |
3273 * Adjust the indexes for the text movement. | |
3274 */ | |
3275 for (i = idx; i < count - 1; ++i) | |
3276 dp->db_index[i] = dp->db_index[i + 1] + line_size; | |
3277 | |
3278 dp->db_free += line_size + INDEX_SIZE; | |
3279 dp->db_txt_start += line_size; | |
3280 --(dp->db_line_count); | |
3281 | |
3282 /* | |
3283 * mark the block dirty and make sure it is in the file (for recovery) | |
3284 */ | |
3285 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
3286 } | |
3287 | |
3288 #ifdef FEAT_BYTEOFF | |
3289 ml_updatechunk(buf, lnum, line_size, ML_CHNK_DELLINE); | |
3290 #endif | |
3291 return OK; | |
3292 } | |
3293 | |
3294 /* | |
3295 * set the B_MARKED flag for line 'lnum' | |
3296 */ | |
3297 void | |
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parents:
7803
diff
changeset
|
3298 ml_setmarked(linenr_T lnum) |
7 | 3299 { |
3300 bhdr_T *hp; | |
3301 DATA_BL *dp; | |
3302 /* invalid line number */ | |
3303 if (lnum < 1 || lnum > curbuf->b_ml.ml_line_count | |
3304 || curbuf->b_ml.ml_mfp == NULL) | |
3305 return; /* give error message? */ | |
3306 | |
3307 if (lowest_marked == 0 || lowest_marked > lnum) | |
3308 lowest_marked = lnum; | |
3309 | |
3310 /* | |
3311 * find the data block containing the line | |
3312 * This also fills the stack with the blocks from the root to the data block | |
3313 * This also releases any locked block. | |
3314 */ | |
3315 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
3316 return; /* give error message? */ | |
3317 | |
3318 dp = (DATA_BL *)(hp->bh_data); | |
3319 dp->db_index[lnum - curbuf->b_ml.ml_locked_low] |= DB_MARKED; | |
3320 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
3321 } | |
3322 | |
3323 /* | |
3324 * find the first line with its B_MARKED flag set | |
3325 */ | |
3326 linenr_T | |
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parents:
7803
diff
changeset
|
3327 ml_firstmarked(void) |
7 | 3328 { |
3329 bhdr_T *hp; | |
3330 DATA_BL *dp; | |
3331 linenr_T lnum; | |
3332 int i; | |
3333 | |
3334 if (curbuf->b_ml.ml_mfp == NULL) | |
3335 return (linenr_T) 0; | |
3336 | |
3337 /* | |
3338 * The search starts with lowest_marked line. This is the last line where | |
3339 * a mark was found, adjusted by inserting/deleting lines. | |
3340 */ | |
3341 for (lnum = lowest_marked; lnum <= curbuf->b_ml.ml_line_count; ) | |
3342 { | |
3343 /* | |
3344 * Find the data block containing the line. | |
3345 * This also fills the stack with the blocks from the root to the data | |
3346 * block This also releases any locked block. | |
3347 */ | |
3348 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
3349 return (linenr_T)0; /* give error message? */ | |
3350 | |
3351 dp = (DATA_BL *)(hp->bh_data); | |
3352 | |
3353 for (i = lnum - curbuf->b_ml.ml_locked_low; | |
3354 lnum <= curbuf->b_ml.ml_locked_high; ++i, ++lnum) | |
3355 if ((dp->db_index[i]) & DB_MARKED) | |
3356 { | |
3357 (dp->db_index[i]) &= DB_INDEX_MASK; | |
3358 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
3359 lowest_marked = lnum + 1; | |
3360 return lnum; | |
3361 } | |
3362 } | |
3363 | |
3364 return (linenr_T) 0; | |
3365 } | |
3366 | |
3367 /* | |
3368 * clear all DB_MARKED flags | |
3369 */ | |
3370 void | |
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parents:
7803
diff
changeset
|
3371 ml_clearmarked(void) |
7 | 3372 { |
3373 bhdr_T *hp; | |
3374 DATA_BL *dp; | |
3375 linenr_T lnum; | |
3376 int i; | |
3377 | |
3378 if (curbuf->b_ml.ml_mfp == NULL) /* nothing to do */ | |
3379 return; | |
3380 | |
3381 /* | |
3382 * The search starts with line lowest_marked. | |
3383 */ | |
3384 for (lnum = lowest_marked; lnum <= curbuf->b_ml.ml_line_count; ) | |
3385 { | |
3386 /* | |
3387 * Find the data block containing the line. | |
3388 * This also fills the stack with the blocks from the root to the data | |
3389 * block and releases any locked block. | |
3390 */ | |
3391 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
3392 return; /* give error message? */ | |
3393 | |
3394 dp = (DATA_BL *)(hp->bh_data); | |
3395 | |
3396 for (i = lnum - curbuf->b_ml.ml_locked_low; | |
3397 lnum <= curbuf->b_ml.ml_locked_high; ++i, ++lnum) | |
3398 if ((dp->db_index[i]) & DB_MARKED) | |
3399 { | |
3400 (dp->db_index[i]) &= DB_INDEX_MASK; | |
3401 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
3402 } | |
3403 } | |
3404 | |
3405 lowest_marked = 0; | |
3406 return; | |
3407 } | |
3408 | |
3409 /* | |
3410 * flush ml_line if necessary | |
3411 */ | |
3412 static void | |
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parents:
7803
diff
changeset
|
3413 ml_flush_line(buf_T *buf) |
7 | 3414 { |
3415 bhdr_T *hp; | |
3416 DATA_BL *dp; | |
3417 linenr_T lnum; | |
3418 char_u *new_line; | |
3419 char_u *old_line; | |
3420 colnr_T new_len; | |
3421 int old_len; | |
3422 int extra; | |
3423 int idx; | |
3424 int start; | |
3425 int count; | |
3426 int i; | |
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diff
changeset
|
3427 static int entered = FALSE; |
7 | 3428 |
3429 if (buf->b_ml.ml_line_lnum == 0 || buf->b_ml.ml_mfp == NULL) | |
3430 return; /* nothing to do */ | |
3431 | |
3432 if (buf->b_ml.ml_flags & ML_LINE_DIRTY) | |
3433 { | |
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diff
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|
3434 /* This code doesn't work recursively, but Netbeans may call back here |
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diff
changeset
|
3435 * when obtaining the cursor position. */ |
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diff
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|
3436 if (entered) |
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diff
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|
3437 return; |
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diff
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|
3438 entered = TRUE; |
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diff
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|
3439 |
7 | 3440 lnum = buf->b_ml.ml_line_lnum; |
3441 new_line = buf->b_ml.ml_line_ptr; | |
3442 | |
3443 hp = ml_find_line(buf, lnum, ML_FIND); | |
3444 if (hp == NULL) | |
3445 EMSGN(_("E320: Cannot find line %ld"), lnum); | |
3446 else | |
3447 { | |
3448 dp = (DATA_BL *)(hp->bh_data); | |
3449 idx = lnum - buf->b_ml.ml_locked_low; | |
3450 start = ((dp->db_index[idx]) & DB_INDEX_MASK); | |
3451 old_line = (char_u *)dp + start; | |
3452 if (idx == 0) /* line is last in block */ | |
3453 old_len = dp->db_txt_end - start; | |
3454 else /* text of previous line follows */ | |
3455 old_len = (dp->db_index[idx - 1] & DB_INDEX_MASK) - start; | |
3456 new_len = (colnr_T)STRLEN(new_line) + 1; | |
3457 extra = new_len - old_len; /* negative if lines gets smaller */ | |
3458 | |
3459 /* | |
3460 * if new line fits in data block, replace directly | |
3461 */ | |
3462 if ((int)dp->db_free >= extra) | |
3463 { | |
3464 /* if the length changes and there are following lines */ | |
3465 count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low + 1; | |
3466 if (extra != 0 && idx < count - 1) | |
3467 { | |
3468 /* move text of following lines */ | |
3469 mch_memmove((char *)dp + dp->db_txt_start - extra, | |
3470 (char *)dp + dp->db_txt_start, | |
3471 (size_t)(start - dp->db_txt_start)); | |
3472 | |
3473 /* adjust pointers of this and following lines */ | |
3474 for (i = idx + 1; i < count; ++i) | |
3475 dp->db_index[i] -= extra; | |
3476 } | |
3477 dp->db_index[idx] -= extra; | |
3478 | |
3479 /* adjust free space */ | |
3480 dp->db_free -= extra; | |
3481 dp->db_txt_start -= extra; | |
3482 | |
3483 /* copy new line into the data block */ | |
3484 mch_memmove(old_line - extra, new_line, (size_t)new_len); | |
3485 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
3486 #ifdef FEAT_BYTEOFF | |
3487 /* The else case is already covered by the insert and delete */ | |
3488 ml_updatechunk(buf, lnum, (long)extra, ML_CHNK_UPDLINE); | |
3489 #endif | |
3490 } | |
3491 else | |
3492 { | |
3493 /* | |
3494 * Cannot do it in one data block: Delete and append. | |
3495 * Append first, because ml_delete_int() cannot delete the | |
3496 * last line in a buffer, which causes trouble for a buffer | |
3497 * that has only one line. | |
3498 * Don't forget to copy the mark! | |
3499 */ | |
3500 /* How about handling errors??? */ | |
3501 (void)ml_append_int(buf, lnum, new_line, new_len, FALSE, | |
3502 (dp->db_index[idx] & DB_MARKED)); | |
3503 (void)ml_delete_int(buf, lnum, FALSE); | |
3504 } | |
3505 } | |
3506 vim_free(new_line); | |
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|
3507 |
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diff
changeset
|
3508 entered = FALSE; |
7 | 3509 } |
3510 | |
3511 buf->b_ml.ml_line_lnum = 0; | |
3512 } | |
3513 | |
3514 /* | |
3515 * create a new, empty, data block | |
3516 */ | |
3517 static bhdr_T * | |
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41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3518 ml_new_data(memfile_T *mfp, int negative, int page_count) |
7 | 3519 { |
3520 bhdr_T *hp; | |
3521 DATA_BL *dp; | |
3522 | |
3523 if ((hp = mf_new(mfp, negative, page_count)) == NULL) | |
3524 return NULL; | |
3525 | |
3526 dp = (DATA_BL *)(hp->bh_data); | |
3527 dp->db_id = DATA_ID; | |
3528 dp->db_txt_start = dp->db_txt_end = page_count * mfp->mf_page_size; | |
3529 dp->db_free = dp->db_txt_start - HEADER_SIZE; | |
3530 dp->db_line_count = 0; | |
3531 | |
3532 return hp; | |
3533 } | |
3534 | |
3535 /* | |
3536 * create a new, empty, pointer block | |
3537 */ | |
3538 static bhdr_T * | |
7827
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3539 ml_new_ptr(memfile_T *mfp) |
7 | 3540 { |
3541 bhdr_T *hp; | |
3542 PTR_BL *pp; | |
3543 | |
3544 if ((hp = mf_new(mfp, FALSE, 1)) == NULL) | |
3545 return NULL; | |
3546 | |
3547 pp = (PTR_BL *)(hp->bh_data); | |
3548 pp->pb_id = PTR_ID; | |
3549 pp->pb_count = 0; | |
2240
6b4879aea261
Add test for gettabvar() and settabvar().
Bram Moolenaar <bram@vim.org>
parents:
2221
diff
changeset
|
3550 pp->pb_count_max = (short_u)((mfp->mf_page_size - sizeof(PTR_BL)) |
6b4879aea261
Add test for gettabvar() and settabvar().
Bram Moolenaar <bram@vim.org>
parents:
2221
diff
changeset
|
3551 / sizeof(PTR_EN) + 1); |
7 | 3552 |
3553 return hp; | |
3554 } | |
3555 | |
3556 /* | |
3557 * lookup line 'lnum' in a memline | |
3558 * | |
3559 * action: if ML_DELETE or ML_INSERT the line count is updated while searching | |
3560 * if ML_FLUSH only flush a locked block | |
3561 * if ML_FIND just find the line | |
3562 * | |
3563 * If the block was found it is locked and put in ml_locked. | |
3564 * The stack is updated to lead to the locked block. The ip_high field in | |
3565 * the stack is updated to reflect the last line in the block AFTER the | |
3566 * insert or delete, also if the pointer block has not been updated yet. But | |
1167 | 3567 * if ml_locked != NULL ml_locked_lineadd must be added to ip_high. |
7 | 3568 * |
3569 * return: NULL for failure, pointer to block header otherwise | |
3570 */ | |
3571 static bhdr_T * | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3572 ml_find_line(buf_T *buf, linenr_T lnum, int action) |
7 | 3573 { |
3574 DATA_BL *dp; | |
3575 PTR_BL *pp; | |
3576 infoptr_T *ip; | |
3577 bhdr_T *hp; | |
3578 memfile_T *mfp; | |
3579 linenr_T t; | |
3580 blocknr_T bnum, bnum2; | |
3581 int dirty; | |
3582 linenr_T low, high; | |
3583 int top; | |
3584 int page_count; | |
3585 int idx; | |
3586 | |
3587 mfp = buf->b_ml.ml_mfp; | |
3588 | |
3589 /* | |
3590 * If there is a locked block check if the wanted line is in it. | |
3591 * If not, flush and release the locked block. | |
3592 * Don't do this for ML_INSERT_SAME, because the stack need to be updated. | |
3593 * Don't do this for ML_FLUSH, because we want to flush the locked block. | |
1066 | 3594 * Don't do this when 'swapfile' is reset, we want to load all the blocks. |
7 | 3595 */ |
3596 if (buf->b_ml.ml_locked) | |
3597 { | |
1066 | 3598 if (ML_SIMPLE(action) |
3599 && buf->b_ml.ml_locked_low <= lnum | |
3600 && buf->b_ml.ml_locked_high >= lnum | |
3601 && !mf_dont_release) | |
7 | 3602 { |
1066 | 3603 /* remember to update pointer blocks and stack later */ |
7 | 3604 if (action == ML_INSERT) |
3605 { | |
3606 ++(buf->b_ml.ml_locked_lineadd); | |
3607 ++(buf->b_ml.ml_locked_high); | |
3608 } | |
3609 else if (action == ML_DELETE) | |
3610 { | |
3611 --(buf->b_ml.ml_locked_lineadd); | |
3612 --(buf->b_ml.ml_locked_high); | |
3613 } | |
3614 return (buf->b_ml.ml_locked); | |
3615 } | |
3616 | |
3617 mf_put(mfp, buf->b_ml.ml_locked, buf->b_ml.ml_flags & ML_LOCKED_DIRTY, | |
3618 buf->b_ml.ml_flags & ML_LOCKED_POS); | |
3619 buf->b_ml.ml_locked = NULL; | |
3620 | |
1167 | 3621 /* |
3622 * If lines have been added or deleted in the locked block, need to | |
3623 * update the line count in pointer blocks. | |
3624 */ | |
3625 if (buf->b_ml.ml_locked_lineadd != 0) | |
7 | 3626 ml_lineadd(buf, buf->b_ml.ml_locked_lineadd); |
3627 } | |
3628 | |
3629 if (action == ML_FLUSH) /* nothing else to do */ | |
3630 return NULL; | |
3631 | |
3632 bnum = 1; /* start at the root of the tree */ | |
3633 page_count = 1; | |
3634 low = 1; | |
3635 high = buf->b_ml.ml_line_count; | |
3636 | |
3637 if (action == ML_FIND) /* first try stack entries */ | |
3638 { | |
3639 for (top = buf->b_ml.ml_stack_top - 1; top >= 0; --top) | |
3640 { | |
3641 ip = &(buf->b_ml.ml_stack[top]); | |
3642 if (ip->ip_low <= lnum && ip->ip_high >= lnum) | |
3643 { | |
3644 bnum = ip->ip_bnum; | |
3645 low = ip->ip_low; | |
3646 high = ip->ip_high; | |
3647 buf->b_ml.ml_stack_top = top; /* truncate stack at prev entry */ | |
3648 break; | |
3649 } | |
3650 } | |
3651 if (top < 0) | |
3652 buf->b_ml.ml_stack_top = 0; /* not found, start at the root */ | |
3653 } | |
3654 else /* ML_DELETE or ML_INSERT */ | |
3655 buf->b_ml.ml_stack_top = 0; /* start at the root */ | |
3656 | |
3657 /* | |
3658 * search downwards in the tree until a data block is found | |
3659 */ | |
3660 for (;;) | |
3661 { | |
3662 if ((hp = mf_get(mfp, bnum, page_count)) == NULL) | |
3663 goto error_noblock; | |
3664 | |
3665 /* | |
3666 * update high for insert/delete | |
3667 */ | |
3668 if (action == ML_INSERT) | |
3669 ++high; | |
3670 else if (action == ML_DELETE) | |
3671 --high; | |
3672 | |
3673 dp = (DATA_BL *)(hp->bh_data); | |
3674 if (dp->db_id == DATA_ID) /* data block */ | |
3675 { | |
3676 buf->b_ml.ml_locked = hp; | |
3677 buf->b_ml.ml_locked_low = low; | |
3678 buf->b_ml.ml_locked_high = high; | |
3679 buf->b_ml.ml_locked_lineadd = 0; | |
3680 buf->b_ml.ml_flags &= ~(ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
3681 return hp; | |
3682 } | |
3683 | |
3684 pp = (PTR_BL *)(dp); /* must be pointer block */ | |
3685 if (pp->pb_id != PTR_ID) | |
3686 { | |
3687 EMSG(_("E317: pointer block id wrong")); | |
3688 goto error_block; | |
3689 } | |
3690 | |
3691 if ((top = ml_add_stack(buf)) < 0) /* add new entry to stack */ | |
3692 goto error_block; | |
3693 ip = &(buf->b_ml.ml_stack[top]); | |
3694 ip->ip_bnum = bnum; | |
3695 ip->ip_low = low; | |
3696 ip->ip_high = high; | |
3697 ip->ip_index = -1; /* index not known yet */ | |
3698 | |
3699 dirty = FALSE; | |
3700 for (idx = 0; idx < (int)pp->pb_count; ++idx) | |
3701 { | |
3702 t = pp->pb_pointer[idx].pe_line_count; | |
3703 CHECK(t == 0, _("pe_line_count is zero")); | |
3704 if ((low += t) > lnum) | |
3705 { | |
3706 ip->ip_index = idx; | |
3707 bnum = pp->pb_pointer[idx].pe_bnum; | |
3708 page_count = pp->pb_pointer[idx].pe_page_count; | |
3709 high = low - 1; | |
3710 low -= t; | |
3711 | |
3712 /* | |
3713 * a negative block number may have been changed | |
3714 */ | |
3715 if (bnum < 0) | |
3716 { | |
3717 bnum2 = mf_trans_del(mfp, bnum); | |
3718 if (bnum != bnum2) | |
3719 { | |
3720 bnum = bnum2; | |
3721 pp->pb_pointer[idx].pe_bnum = bnum; | |
3722 dirty = TRUE; | |
3723 } | |
3724 } | |
3725 | |
3726 break; | |
3727 } | |
3728 } | |
3729 if (idx >= (int)pp->pb_count) /* past the end: something wrong! */ | |
3730 { | |
3731 if (lnum > buf->b_ml.ml_line_count) | |
3732 EMSGN(_("E322: line number out of range: %ld past the end"), | |
3733 lnum - buf->b_ml.ml_line_count); | |
3734 | |
3735 else | |
3736 EMSGN(_("E323: line count wrong in block %ld"), bnum); | |
3737 goto error_block; | |
3738 } | |
3739 if (action == ML_DELETE) | |
3740 { | |
3741 pp->pb_pointer[idx].pe_line_count--; | |
3742 dirty = TRUE; | |
3743 } | |
3744 else if (action == ML_INSERT) | |
3745 { | |
3746 pp->pb_pointer[idx].pe_line_count++; | |
3747 dirty = TRUE; | |
3748 } | |
3749 mf_put(mfp, hp, dirty, FALSE); | |
3750 } | |
3751 | |
3752 error_block: | |
3753 mf_put(mfp, hp, FALSE, FALSE); | |
3754 error_noblock: | |
2267 | 3755 /* |
3756 * If action is ML_DELETE or ML_INSERT we have to correct the tree for | |
3757 * the incremented/decremented line counts, because there won't be a line | |
3758 * inserted/deleted after all. | |
3759 */ | |
7 | 3760 if (action == ML_DELETE) |
3761 ml_lineadd(buf, 1); | |
3762 else if (action == ML_INSERT) | |
3763 ml_lineadd(buf, -1); | |
3764 buf->b_ml.ml_stack_top = 0; | |
3765 return NULL; | |
3766 } | |
3767 | |
3768 /* | |
3769 * add an entry to the info pointer stack | |
3770 * | |
3771 * return -1 for failure, number of the new entry otherwise | |
3772 */ | |
3773 static int | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3774 ml_add_stack(buf_T *buf) |
7 | 3775 { |
3776 int top; | |
3777 infoptr_T *newstack; | |
3778 | |
3779 top = buf->b_ml.ml_stack_top; | |
3780 | |
2267 | 3781 /* may have to increase the stack size */ |
7 | 3782 if (top == buf->b_ml.ml_stack_size) |
3783 { | |
2267 | 3784 CHECK(top > 0, _("Stack size increases")); /* more than 5 levels??? */ |
7 | 3785 |
3786 newstack = (infoptr_T *)alloc((unsigned)sizeof(infoptr_T) * | |
3787 (buf->b_ml.ml_stack_size + STACK_INCR)); | |
3788 if (newstack == NULL) | |
3789 return -1; | |
6989 | 3790 if (top > 0) |
3791 mch_memmove(newstack, buf->b_ml.ml_stack, | |
1624 | 3792 (size_t)top * sizeof(infoptr_T)); |
7 | 3793 vim_free(buf->b_ml.ml_stack); |
3794 buf->b_ml.ml_stack = newstack; | |
3795 buf->b_ml.ml_stack_size += STACK_INCR; | |
3796 } | |
3797 | |
3798 buf->b_ml.ml_stack_top++; | |
3799 return top; | |
3800 } | |
3801 | |
3802 /* | |
3803 * Update the pointer blocks on the stack for inserted/deleted lines. | |
3804 * The stack itself is also updated. | |
3805 * | |
3806 * When a insert/delete line action fails, the line is not inserted/deleted, | |
3807 * but the pointer blocks have already been updated. That is fixed here by | |
3808 * walking through the stack. | |
3809 * | |
3810 * Count is the number of lines added, negative if lines have been deleted. | |
3811 */ | |
3812 static void | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3813 ml_lineadd(buf_T *buf, int count) |
7 | 3814 { |
3815 int idx; | |
3816 infoptr_T *ip; | |
3817 PTR_BL *pp; | |
3818 memfile_T *mfp = buf->b_ml.ml_mfp; | |
3819 bhdr_T *hp; | |
3820 | |
3821 for (idx = buf->b_ml.ml_stack_top - 1; idx >= 0; --idx) | |
3822 { | |
3823 ip = &(buf->b_ml.ml_stack[idx]); | |
3824 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
3825 break; | |
3826 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
3827 if (pp->pb_id != PTR_ID) | |
3828 { | |
3829 mf_put(mfp, hp, FALSE, FALSE); | |
3830 EMSG(_("E317: pointer block id wrong 2")); | |
3831 break; | |
3832 } | |
3833 pp->pb_pointer[ip->ip_index].pe_line_count += count; | |
3834 ip->ip_high += count; | |
3835 mf_put(mfp, hp, TRUE, FALSE); | |
3836 } | |
3837 } | |
3838 | |
2214
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
3839 #if defined(HAVE_READLINK) || defined(PROTO) |
594 | 3840 /* |
3841 * Resolve a symlink in the last component of a file name. | |
3842 * Note that f_resolve() does it for every part of the path, we don't do that | |
3843 * here. | |
3844 * If it worked returns OK and the resolved link in "buf[MAXPATHL]". | |
3845 * Otherwise returns FAIL. | |
3846 */ | |
2214
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
3847 int |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3848 resolve_symlink(char_u *fname, char_u *buf) |
594 | 3849 { |
3850 char_u tmp[MAXPATHL]; | |
3851 int ret; | |
3852 int depth = 0; | |
3853 | |
3854 if (fname == NULL) | |
3855 return FAIL; | |
3856 | |
3857 /* Put the result so far in tmp[], starting with the original name. */ | |
3858 vim_strncpy(tmp, fname, MAXPATHL - 1); | |
3859 | |
3860 for (;;) | |
3861 { | |
3862 /* Limit symlink depth to 100, catch recursive loops. */ | |
3863 if (++depth == 100) | |
3864 { | |
3865 EMSG2(_("E773: Symlink loop for \"%s\""), fname); | |
3866 return FAIL; | |
3867 } | |
3868 | |
3869 ret = readlink((char *)tmp, (char *)buf, MAXPATHL - 1); | |
3870 if (ret <= 0) | |
3871 { | |
619 | 3872 if (errno == EINVAL || errno == ENOENT) |
594 | 3873 { |
619 | 3874 /* Found non-symlink or not existing file, stop here. |
1855 | 3875 * When at the first level use the unmodified name, skip the |
594 | 3876 * call to vim_FullName(). */ |
3877 if (depth == 1) | |
3878 return FAIL; | |
3879 | |
3880 /* Use the resolved name in tmp[]. */ | |
3881 break; | |
3882 } | |
3883 | |
3884 /* There must be some error reading links, use original name. */ | |
3885 return FAIL; | |
3886 } | |
3887 buf[ret] = NUL; | |
3888 | |
3889 /* | |
3890 * Check whether the symlink is relative or absolute. | |
3891 * If it's relative, build a new path based on the directory | |
3892 * portion of the filename (if any) and the path the symlink | |
3893 * points to. | |
3894 */ | |
3895 if (mch_isFullName(buf)) | |
3896 STRCPY(tmp, buf); | |
3897 else | |
3898 { | |
3899 char_u *tail; | |
3900 | |
3901 tail = gettail(tmp); | |
3902 if (STRLEN(tail) + STRLEN(buf) >= MAXPATHL) | |
3903 return FAIL; | |
3904 STRCPY(tail, buf); | |
3905 } | |
3906 } | |
3907 | |
3908 /* | |
3909 * Try to resolve the full name of the file so that the swapfile name will | |
3910 * be consistent even when opening a relative symlink from different | |
3911 * working directories. | |
3912 */ | |
3913 return vim_FullName(tmp, buf, MAXPATHL, TRUE); | |
3914 } | |
3915 #endif | |
3916 | |
7 | 3917 /* |
460 | 3918 * Make swap file name out of the file name and a directory name. |
3919 * Returns pointer to allocated memory or NULL. | |
7 | 3920 */ |
460 | 3921 char_u * |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3922 makeswapname( |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3923 char_u *fname, |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3924 char_u *ffname UNUSED, |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3925 buf_T *buf, |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3926 char_u *dir_name) |
7 | 3927 { |
3928 char_u *r, *s; | |
2145
de0e7ca61893
updated for version 7.2.427
Bram Moolenaar <bram@zimbu.org>
parents:
2108
diff
changeset
|
3929 char_u *fname_res = fname; |
594 | 3930 #ifdef HAVE_READLINK |
3931 char_u fname_buf[MAXPATHL]; | |
3932 #endif | |
7 | 3933 |
3934 #if defined(UNIX) || defined(WIN3264) /* Need _very_ long file names */ | |
3935 s = dir_name + STRLEN(dir_name); | |
39 | 3936 if (after_pathsep(dir_name, s) && s[-1] == s[-2]) |
7 | 3937 { /* Ends with '//', Use Full path */ |
3938 r = NULL; | |
460 | 3939 if ((s = make_percent_swname(dir_name, fname)) != NULL) |
7 | 3940 { |
3941 r = modname(s, (char_u *)".swp", FALSE); | |
3942 vim_free(s); | |
3943 } | |
3944 return r; | |
3945 } | |
3946 #endif | |
3947 | |
594 | 3948 #ifdef HAVE_READLINK |
3949 /* Expand symlink in the file name, so that we put the swap file with the | |
3950 * actual file instead of with the symlink. */ | |
3951 if (resolve_symlink(fname, fname_buf) == OK) | |
3952 fname_res = fname_buf; | |
3953 #endif | |
3954 | |
7 | 3955 r = buf_modname( |
3956 #ifdef SHORT_FNAME | |
3957 TRUE, | |
3958 #else | |
3959 (buf->b_p_sn || buf->b_shortname), | |
3960 #endif | |
594 | 3961 fname_res, |
7 | 3962 (char_u *) |
2823 | 3963 #if defined(VMS) |
7 | 3964 "_swp", |
3965 #else | |
3966 ".swp", | |
3967 #endif | |
3968 #ifdef SHORT_FNAME /* always 8.3 file name */ | |
3969 FALSE | |
3970 #else | |
3971 /* Prepend a '.' to the swap file name for the current directory. */ | |
3972 dir_name[0] == '.' && dir_name[1] == NUL | |
3973 #endif | |
3974 ); | |
3975 if (r == NULL) /* out of memory */ | |
3976 return NULL; | |
3977 | |
3978 s = get_file_in_dir(r, dir_name); | |
3979 vim_free(r); | |
3980 return s; | |
3981 } | |
3982 | |
3983 /* | |
3984 * Get file name to use for swap file or backup file. | |
3985 * Use the name of the edited file "fname" and an entry in the 'dir' or 'bdir' | |
3986 * option "dname". | |
3987 * - If "dname" is ".", return "fname" (swap file in dir of file). | |
3988 * - If "dname" starts with "./", insert "dname" in "fname" (swap file | |
3989 * relative to dir of file). | |
3990 * - Otherwise, prepend "dname" to the tail of "fname" (swap file in specific | |
3991 * dir). | |
3992 * | |
3993 * The return value is an allocated string and can be NULL. | |
3994 */ | |
3995 char_u * | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3996 get_file_in_dir( |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3997 char_u *fname, |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3998 char_u *dname) /* don't use "dirname", it is a global for Alpha */ |
7 | 3999 { |
4000 char_u *t; | |
4001 char_u *tail; | |
4002 char_u *retval; | |
4003 int save_char; | |
4004 | |
4005 tail = gettail(fname); | |
4006 | |
4007 if (dname[0] == '.' && dname[1] == NUL) | |
4008 retval = vim_strsave(fname); | |
4009 else if (dname[0] == '.' && vim_ispathsep(dname[1])) | |
4010 { | |
4011 if (tail == fname) /* no path before file name */ | |
4012 retval = concat_fnames(dname + 2, tail, TRUE); | |
4013 else | |
4014 { | |
4015 save_char = *tail; | |
4016 *tail = NUL; | |
4017 t = concat_fnames(fname, dname + 2, TRUE); | |
4018 *tail = save_char; | |
4019 if (t == NULL) /* out of memory */ | |
4020 retval = NULL; | |
4021 else | |
4022 { | |
4023 retval = concat_fnames(t, tail, TRUE); | |
4024 vim_free(t); | |
4025 } | |
4026 } | |
4027 } | |
4028 else | |
4029 retval = concat_fnames(dname, tail, TRUE); | |
4030 | |
5432 | 4031 #ifdef WIN3264 |
4032 if (retval != NULL) | |
4033 for (t = gettail(retval); *t != NUL; mb_ptr_adv(t)) | |
4034 if (*t == ':') | |
4035 *t = '%'; | |
4036 #endif | |
4037 | |
7 | 4038 return retval; |
4039 } | |
4040 | |
7803
37c929c4a073
commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
Christian Brabandt <cb@256bit.org>
parents:
7410
diff
changeset
|
4041 static void attention_message(buf_T *buf, char_u *fname); |
580 | 4042 |
4043 /* | |
4044 * Print the ATTENTION message: info about an existing swap file. | |
4045 */ | |
4046 static void | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4047 attention_message( |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4048 buf_T *buf, /* buffer being edited */ |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4049 char_u *fname) /* swap file name */ |
580 | 4050 { |
4051 struct stat st; | |
4052 time_t x, sx; | |
1001 | 4053 char *p; |
580 | 4054 |
4055 ++no_wait_return; | |
4056 (void)EMSG(_("E325: ATTENTION")); | |
4057 MSG_PUTS(_("\nFound a swap file by the name \"")); | |
4058 msg_home_replace(fname); | |
4059 MSG_PUTS("\"\n"); | |
4060 sx = swapfile_info(fname); | |
4061 MSG_PUTS(_("While opening file \"")); | |
4062 msg_outtrans(buf->b_fname); | |
4063 MSG_PUTS("\"\n"); | |
4064 if (mch_stat((char *)buf->b_fname, &st) != -1) | |
4065 { | |
4066 MSG_PUTS(_(" dated: ")); | |
4067 x = st.st_mtime; /* Manx C can't do &st.st_mtime */ | |
1001 | 4068 p = ctime(&x); /* includes '\n' */ |
4069 if (p == NULL) | |
4070 MSG_PUTS("(invalid)\n"); | |
4071 else | |
4072 MSG_PUTS(p); | |
580 | 4073 if (sx != 0 && x > sx) |
4074 MSG_PUTS(_(" NEWER than swap file!\n")); | |
4075 } | |
4076 /* Some of these messages are long to allow translation to | |
4077 * other languages. */ | |
2703 | 4078 MSG_PUTS(_("\n(1) Another program may be editing the same file. If this is the case,\n be careful not to end up with two different instances of the same\n file when making changes.")); |
4079 MSG_PUTS(_(" Quit, or continue with caution.\n")); | |
4080 MSG_PUTS(_("(2) An edit session for this file crashed.\n")); | |
580 | 4081 MSG_PUTS(_(" If this is the case, use \":recover\" or \"vim -r ")); |
4082 msg_outtrans(buf->b_fname); | |
4083 MSG_PUTS(_("\"\n to recover the changes (see \":help recovery\").\n")); | |
4084 MSG_PUTS(_(" If you did this already, delete the swap file \"")); | |
4085 msg_outtrans(fname); | |
4086 MSG_PUTS(_("\"\n to avoid this message.\n")); | |
4087 cmdline_row = msg_row; | |
4088 --no_wait_return; | |
4089 } | |
4090 | |
4091 #ifdef FEAT_AUTOCMD | |
7803
37c929c4a073
commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
Christian Brabandt <cb@256bit.org>
parents:
7410
diff
changeset
|
4092 static int do_swapexists(buf_T *buf, char_u *fname); |
580 | 4093 |
4094 /* | |
4095 * Trigger the SwapExists autocommands. | |
4096 * Returns a value for equivalent to do_dialog() (see below): | |
4097 * 0: still need to ask for a choice | |
4098 * 1: open read-only | |
4099 * 2: edit anyway | |
4100 * 3: recover | |
4101 * 4: delete it | |
4102 * 5: quit | |
4103 * 6: abort | |
4104 */ | |
4105 static int | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4106 do_swapexists(buf_T *buf, char_u *fname) |
580 | 4107 { |
4108 set_vim_var_string(VV_SWAPNAME, fname, -1); | |
4109 set_vim_var_string(VV_SWAPCHOICE, NULL, -1); | |
4110 | |
4111 /* Trigger SwapExists autocommands with <afile> set to the file being | |
1856 | 4112 * edited. Disallow changing directory here. */ |
4113 ++allbuf_lock; | |
580 | 4114 apply_autocmds(EVENT_SWAPEXISTS, buf->b_fname, NULL, FALSE, NULL); |
1856 | 4115 --allbuf_lock; |
580 | 4116 |
4117 set_vim_var_string(VV_SWAPNAME, NULL, -1); | |
4118 | |
4119 switch (*get_vim_var_str(VV_SWAPCHOICE)) | |
4120 { | |
4121 case 'o': return 1; | |
4122 case 'e': return 2; | |
4123 case 'r': return 3; | |
4124 case 'd': return 4; | |
4125 case 'q': return 5; | |
4126 case 'a': return 6; | |
4127 } | |
4128 | |
4129 return 0; | |
4130 } | |
4131 #endif | |
4132 | |
7 | 4133 /* |
4134 * Find out what name to use for the swap file for buffer 'buf'. | |
4135 * | |
4136 * Several names are tried to find one that does not exist | |
460 | 4137 * Returns the name in allocated memory or NULL. |
3158 | 4138 * When out of memory "dirp" is set to NULL. |
7 | 4139 * |
4140 * Note: If BASENAMELEN is not correct, you will get error messages for | |
2214
f8222d1f9a73
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Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4141 * not being able to open the swap or undo file |
1856 | 4142 * Note: May trigger SwapExists autocmd, pointers may change! |
7 | 4143 */ |
4144 static char_u * | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4145 findswapname( |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4146 buf_T *buf, |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4147 char_u **dirp, /* pointer to list of directories */ |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4148 char_u *old_fname) /* don't give warning for this file name */ |
7 | 4149 { |
4150 char_u *fname; | |
4151 int n; | |
4152 char_u *dir_name; | |
4153 #ifdef AMIGA | |
4154 BPTR fh; | |
4155 #endif | |
4156 #ifndef SHORT_FNAME | |
4157 int r; | |
4158 #endif | |
5432 | 4159 char_u *buf_fname = buf->b_fname; |
7 | 4160 |
7410
08e62c4fc17d
commit https://github.com/vim/vim/commit/53076830fea6df737455523f7e235bfe4f79864d
Christian Brabandt <cb@256bit.org>
parents:
7408
diff
changeset
|
4161 #if !defined(SHORT_FNAME) && !defined(UNIX) |
7 | 4162 # define CREATE_DUMMY_FILE |
4163 FILE *dummyfd = NULL; | |
4164 | |
5432 | 4165 # ifdef WIN3264 |
4166 if (buf_fname != NULL && !mch_isFullName(buf_fname) | |
4167 && vim_strchr(gettail(buf_fname), ':')) | |
4168 { | |
4169 char_u *t; | |
4170 | |
4171 buf_fname = vim_strsave(buf_fname); | |
4172 if (buf_fname == NULL) | |
4173 buf_fname = buf->b_fname; | |
4174 else | |
4175 for (t = gettail(buf_fname); *t != NUL; mb_ptr_adv(t)) | |
4176 if (*t == ':') | |
4177 *t = '%'; | |
4178 } | |
4179 # endif | |
4180 | |
2214
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Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4181 /* |
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4182 * If we start editing a new file, e.g. "test.doc", which resides on an |
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4183 * MSDOS compatible filesystem, it is possible that the file |
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4184 * "test.doc.swp" which we create will be exactly the same file. To avoid |
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4185 * this problem we temporarily create "test.doc". Don't do this when the |
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4186 * check below for a 8.3 file name is used. |
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4187 */ |
5432 | 4188 if (!(buf->b_p_sn || buf->b_shortname) && buf_fname != NULL |
4189 && mch_getperm(buf_fname) < 0) | |
4190 dummyfd = mch_fopen((char *)buf_fname, "w"); | |
7 | 4191 #endif |
4192 | |
2214
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Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4193 /* |
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4194 * Isolate a directory name from *dirp and put it in dir_name. |
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4195 * First allocate some memory to put the directory name in. |
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4196 */ |
7 | 4197 dir_name = alloc((unsigned)STRLEN(*dirp) + 1); |
3158 | 4198 if (dir_name == NULL) |
4199 *dirp = NULL; | |
4200 else | |
7 | 4201 (void)copy_option_part(dirp, dir_name, 31000, ","); |
4202 | |
2214
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4203 /* |
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4204 * we try different names until we find one that does not exist yet |
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4205 */ |
7 | 4206 if (dir_name == NULL) /* out of memory */ |
4207 fname = NULL; | |
4208 else | |
5432 | 4209 fname = makeswapname(buf_fname, buf->b_ffname, buf, dir_name); |
7 | 4210 |
4211 for (;;) | |
4212 { | |
4213 if (fname == NULL) /* must be out of memory */ | |
4214 break; | |
4215 if ((n = (int)STRLEN(fname)) == 0) /* safety check */ | |
4216 { | |
4217 vim_free(fname); | |
4218 fname = NULL; | |
4219 break; | |
4220 } | |
7410
08e62c4fc17d
commit https://github.com/vim/vim/commit/53076830fea6df737455523f7e235bfe4f79864d
Christian Brabandt <cb@256bit.org>
parents:
7408
diff
changeset
|
4221 #if defined(UNIX) && !defined(SHORT_FNAME) |
7 | 4222 /* |
4223 * Some systems have a MS-DOS compatible filesystem that use 8.3 character | |
4224 * file names. If this is the first try and the swap file name does not fit in | |
4225 * 8.3, detect if this is the case, set shortname and try again. | |
4226 */ | |
4227 if (fname[n - 2] == 'w' && fname[n - 1] == 'p' | |
4228 && !(buf->b_p_sn || buf->b_shortname)) | |
4229 { | |
4230 char_u *tail; | |
4231 char_u *fname2; | |
4232 struct stat s1, s2; | |
4233 int f1, f2; | |
4234 int created1 = FALSE, created2 = FALSE; | |
4235 int same = FALSE; | |
4236 | |
4237 /* | |
4238 * Check if swapfile name does not fit in 8.3: | |
4239 * It either contains two dots, is longer than 8 chars, or starts | |
4240 * with a dot. | |
4241 */ | |
5432 | 4242 tail = gettail(buf_fname); |
7 | 4243 if ( vim_strchr(tail, '.') != NULL |
4244 || STRLEN(tail) > (size_t)8 | |
4245 || *gettail(fname) == '.') | |
4246 { | |
4247 fname2 = alloc(n + 2); | |
4248 if (fname2 != NULL) | |
4249 { | |
4250 STRCPY(fname2, fname); | |
4251 /* if fname == "xx.xx.swp", fname2 = "xx.xx.swx" | |
4252 * if fname == ".xx.swp", fname2 = ".xx.swpx" | |
4253 * if fname == "123456789.swp", fname2 = "12345678x.swp" | |
4254 */ | |
4255 if (vim_strchr(tail, '.') != NULL) | |
4256 fname2[n - 1] = 'x'; | |
4257 else if (*gettail(fname) == '.') | |
4258 { | |
4259 fname2[n] = 'x'; | |
4260 fname2[n + 1] = NUL; | |
4261 } | |
4262 else | |
4263 fname2[n - 5] += 1; | |
4264 /* | |
4265 * may need to create the files to be able to use mch_stat() | |
4266 */ | |
4267 f1 = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
4268 if (f1 < 0) | |
4269 { | |
4270 f1 = mch_open_rw((char *)fname, | |
4271 O_RDWR|O_CREAT|O_EXCL|O_EXTRA); | |
4272 created1 = TRUE; | |
4273 } | |
4274 if (f1 >= 0) | |
4275 { | |
4276 f2 = mch_open((char *)fname2, O_RDONLY | O_EXTRA, 0); | |
4277 if (f2 < 0) | |
4278 { | |
4279 f2 = mch_open_rw((char *)fname2, | |
4280 O_RDWR|O_CREAT|O_EXCL|O_EXTRA); | |
4281 created2 = TRUE; | |
4282 } | |
4283 if (f2 >= 0) | |
4284 { | |
4285 /* | |
4286 * Both files exist now. If mch_stat() returns the | |
4287 * same device and inode they are the same file. | |
4288 */ | |
4289 if (mch_fstat(f1, &s1) != -1 | |
4290 && mch_fstat(f2, &s2) != -1 | |
4291 && s1.st_dev == s2.st_dev | |
4292 && s1.st_ino == s2.st_ino) | |
4293 same = TRUE; | |
4294 close(f2); | |
4295 if (created2) | |
4296 mch_remove(fname2); | |
4297 } | |
4298 close(f1); | |
4299 if (created1) | |
4300 mch_remove(fname); | |
4301 } | |
4302 vim_free(fname2); | |
4303 if (same) | |
4304 { | |
4305 buf->b_shortname = TRUE; | |
4306 vim_free(fname); | |
5432 | 4307 fname = makeswapname(buf_fname, buf->b_ffname, |
460 | 4308 buf, dir_name); |
7 | 4309 continue; /* try again with b_shortname set */ |
4310 } | |
4311 } | |
4312 } | |
4313 } | |
4314 #endif | |
4315 /* | |
4316 * check if the swapfile already exists | |
4317 */ | |
4318 if (mch_getperm(fname) < 0) /* it does not exist */ | |
4319 { | |
4320 #ifdef HAVE_LSTAT | |
4321 struct stat sb; | |
4322 | |
4323 /* | |
4324 * Extra security check: When a swap file is a symbolic link, this | |
4325 * is most likely a symlink attack. | |
4326 */ | |
4327 if (mch_lstat((char *)fname, &sb) < 0) | |
4328 #else | |
4329 # ifdef AMIGA | |
4330 fh = Open((UBYTE *)fname, (long)MODE_NEWFILE); | |
4331 /* | |
4332 * on the Amiga mch_getperm() will return -1 when the file exists | |
4333 * but is being used by another program. This happens if you edit | |
4334 * a file twice. | |
4335 */ | |
4336 if (fh != (BPTR)NULL) /* can open file, OK */ | |
4337 { | |
4338 Close(fh); | |
4339 mch_remove(fname); | |
4340 break; | |
4341 } | |
4342 if (IoErr() != ERROR_OBJECT_IN_USE | |
4343 && IoErr() != ERROR_OBJECT_EXISTS) | |
4344 # endif | |
4345 #endif | |
4346 break; | |
4347 } | |
4348 | |
4349 /* | |
4350 * A file name equal to old_fname is OK to use. | |
4351 */ | |
4352 if (old_fname != NULL && fnamecmp(fname, old_fname) == 0) | |
4353 break; | |
4354 | |
4355 /* | |
4356 * get here when file already exists | |
4357 */ | |
4358 if (fname[n - 2] == 'w' && fname[n - 1] == 'p') /* first try */ | |
4359 { | |
4360 #ifndef SHORT_FNAME | |
4361 /* | |
4362 * on MS-DOS compatible filesystems (e.g. messydos) file.doc.swp | |
4363 * and file.doc are the same file. To guess if this problem is | |
4364 * present try if file.doc.swx exists. If it does, we set | |
4365 * buf->b_shortname and try file_doc.swp (dots replaced by | |
4366 * underscores for this file), and try again. If it doesn't we | |
4367 * assume that "file.doc.swp" already exists. | |
4368 */ | |
4369 if (!(buf->b_p_sn || buf->b_shortname)) /* not tried yet */ | |
4370 { | |
4371 fname[n - 1] = 'x'; | |
4372 r = mch_getperm(fname); /* try "file.swx" */ | |
4373 fname[n - 1] = 'p'; | |
4374 if (r >= 0) /* "file.swx" seems to exist */ | |
4375 { | |
4376 buf->b_shortname = TRUE; | |
4377 vim_free(fname); | |
5432 | 4378 fname = makeswapname(buf_fname, buf->b_ffname, |
460 | 4379 buf, dir_name); |
7 | 4380 continue; /* try again with '.' replaced with '_' */ |
4381 } | |
4382 } | |
4383 #endif | |
4384 /* | |
4385 * If we get here the ".swp" file really exists. | |
4386 * Give an error message, unless recovering, no file name, we are | |
4387 * viewing a help file or when the path of the file is different | |
4388 * (happens when all .swp files are in one directory). | |
4389 */ | |
5432 | 4390 if (!recoverymode && buf_fname != NULL |
43 | 4391 && !buf->b_help && !(buf->b_flags & BF_DUMMY)) |
7 | 4392 { |
4393 int fd; | |
4394 struct block0 b0; | |
4395 int differ = FALSE; | |
4396 | |
4397 /* | |
4398 * Try to read block 0 from the swap file to get the original | |
4399 * file name (and inode number). | |
4400 */ | |
4401 fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
4402 if (fd >= 0) | |
4403 { | |
2664 | 4404 if (read_eintr(fd, &b0, sizeof(b0)) == sizeof(b0)) |
7 | 4405 { |
4406 /* | |
39 | 4407 * If the swapfile has the same directory as the |
4408 * buffer don't compare the directory names, they can | |
4409 * have a different mountpoint. | |
7 | 4410 */ |
39 | 4411 if (b0.b0_flags & B0_SAME_DIR) |
4412 { | |
4413 if (fnamecmp(gettail(buf->b_ffname), | |
4414 gettail(b0.b0_fname)) != 0 | |
4415 || !same_directory(fname, buf->b_ffname)) | |
594 | 4416 { |
4417 #ifdef CHECK_INODE | |
4418 /* Symlinks may point to the same file even | |
4419 * when the name differs, need to check the | |
4420 * inode too. */ | |
4421 expand_env(b0.b0_fname, NameBuff, MAXPATHL); | |
4422 if (fnamecmp_ino(buf->b_ffname, NameBuff, | |
4423 char_to_long(b0.b0_ino))) | |
4424 #endif | |
4425 differ = TRUE; | |
4426 } | |
39 | 4427 } |
4428 else | |
4429 { | |
4430 /* | |
4431 * The name in the swap file may be | |
4432 * "~user/path/file". Expand it first. | |
4433 */ | |
4434 expand_env(b0.b0_fname, NameBuff, MAXPATHL); | |
7 | 4435 #ifdef CHECK_INODE |
39 | 4436 if (fnamecmp_ino(buf->b_ffname, NameBuff, |
594 | 4437 char_to_long(b0.b0_ino))) |
39 | 4438 differ = TRUE; |
7 | 4439 #else |
39 | 4440 if (fnamecmp(NameBuff, buf->b_ffname) != 0) |
4441 differ = TRUE; | |
7 | 4442 #endif |
39 | 4443 } |
7 | 4444 } |
4445 close(fd); | |
4446 } | |
4447 | |
4448 /* give the ATTENTION message when there is an old swap file | |
4449 * for the current file, and the buffer was not recovered. */ | |
4450 if (differ == FALSE && !(curbuf->b_flags & BF_RECOVERED) | |
4451 && vim_strchr(p_shm, SHM_ATTENTION) == NULL) | |
4452 { | |
580 | 4453 #if defined(HAS_SWAP_EXISTS_ACTION) |
4454 int choice = 0; | |
4455 #endif | |
7 | 4456 #ifdef CREATE_DUMMY_FILE |
4457 int did_use_dummy = FALSE; | |
4458 | |
4459 /* Avoid getting a warning for the file being created | |
4460 * outside of Vim, it was created at the start of this | |
4461 * function. Delete the file now, because Vim might exit | |
4462 * here if the window is closed. */ | |
4463 if (dummyfd != NULL) | |
4464 { | |
4465 fclose(dummyfd); | |
4466 dummyfd = NULL; | |
5432 | 4467 mch_remove(buf_fname); |
7 | 4468 did_use_dummy = TRUE; |
4469 } | |
4470 #endif | |
4471 | |
4472 #if (defined(UNIX) || defined(__EMX__) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)) | |
4473 process_still_running = FALSE; | |
4474 #endif | |
580 | 4475 #ifdef FEAT_AUTOCMD |
4476 /* | |
4477 * If there is an SwapExists autocommand and we can handle | |
4478 * the response, trigger it. It may return 0 to ask the | |
4479 * user anyway. | |
4480 */ | |
4481 if (swap_exists_action != SEA_NONE | |
5432 | 4482 && has_autocmd(EVENT_SWAPEXISTS, buf_fname, buf)) |
580 | 4483 choice = do_swapexists(buf, fname); |
4484 | |
4485 if (choice == 0) | |
4486 #endif | |
7 | 4487 { |
580 | 4488 #ifdef FEAT_GUI |
4489 /* If we are supposed to start the GUI but it wasn't | |
4490 * completely started yet, start it now. This makes | |
4491 * the messages displayed in the Vim window when | |
4492 * loading a session from the .gvimrc file. */ | |
4493 if (gui.starting && !gui.in_use) | |
4494 gui_start(); | |
4495 #endif | |
4496 /* Show info about the existing swap file. */ | |
4497 attention_message(buf, fname); | |
4498 | |
4499 /* We don't want a 'q' typed at the more-prompt | |
4500 * interrupt loading a file. */ | |
4501 got_int = FALSE; | |
7 | 4502 } |
4503 | |
4504 #if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) | |
580 | 4505 if (swap_exists_action != SEA_NONE && choice == 0) |
7 | 4506 { |
4507 char_u *name; | |
4508 | |
4509 name = alloc((unsigned)(STRLEN(fname) | |
4510 + STRLEN(_("Swap file \"")) | |
4511 + STRLEN(_("\" already exists!")) + 5)); | |
4512 if (name != NULL) | |
4513 { | |
4514 STRCPY(name, _("Swap file \"")); | |
4515 home_replace(NULL, fname, name + STRLEN(name), | |
4516 1000, TRUE); | |
4517 STRCAT(name, _("\" already exists!")); | |
4518 } | |
580 | 4519 choice = do_dialog(VIM_WARNING, |
7 | 4520 (char_u *)_("VIM - ATTENTION"), |
4521 name == NULL | |
4522 ? (char_u *)_("Swap file already exists!") | |
4523 : name, | |
4524 # if defined(UNIX) || defined(__EMX__) || defined(VMS) | |
4525 process_still_running | |
4526 ? (char_u *)_("&Open Read-Only\n&Edit anyway\n&Recover\n&Quit\n&Abort") : | |
4527 # endif | |
2684 | 4528 (char_u *)_("&Open Read-Only\n&Edit anyway\n&Recover\n&Delete it\n&Quit\n&Abort"), 1, NULL, FALSE); |
580 | 4529 |
4530 # if defined(UNIX) || defined(__EMX__) || defined(VMS) | |
4531 if (process_still_running && choice >= 4) | |
4532 choice++; /* Skip missing "Delete it" button */ | |
4533 # endif | |
4534 vim_free(name); | |
4535 | |
4536 /* pretend screen didn't scroll, need redraw anyway */ | |
4537 msg_scrolled = 0; | |
4538 redraw_all_later(NOT_VALID); | |
4539 } | |
4540 #endif | |
4541 | |
4542 #if defined(HAS_SWAP_EXISTS_ACTION) | |
4543 if (choice > 0) | |
4544 { | |
4545 switch (choice) | |
7 | 4546 { |
4547 case 1: | |
4548 buf->b_p_ro = TRUE; | |
4549 break; | |
4550 case 2: | |
4551 break; | |
4552 case 3: | |
4553 swap_exists_action = SEA_RECOVER; | |
4554 break; | |
4555 case 4: | |
580 | 4556 mch_remove(fname); |
4557 break; | |
4558 case 5: | |
7 | 4559 swap_exists_action = SEA_QUIT; |
4560 break; | |
580 | 4561 case 6: |
7 | 4562 swap_exists_action = SEA_QUIT; |
4563 got_int = TRUE; | |
4564 break; | |
4565 } | |
4566 | |
4567 /* If the file was deleted this fname can be used. */ | |
4568 if (mch_getperm(fname) < 0) | |
4569 break; | |
4570 } | |
4571 else | |
4572 #endif | |
4573 { | |
4574 MSG_PUTS("\n"); | |
625 | 4575 if (msg_silent == 0) |
4576 /* call wait_return() later */ | |
4577 need_wait_return = TRUE; | |
7 | 4578 } |
4579 | |
4580 #ifdef CREATE_DUMMY_FILE | |
4581 /* Going to try another name, need the dummy file again. */ | |
4582 if (did_use_dummy) | |
5432 | 4583 dummyfd = mch_fopen((char *)buf_fname, "w"); |
7 | 4584 #endif |
4585 } | |
4586 } | |
4587 } | |
4588 | |
4589 /* | |
4590 * Change the ".swp" extension to find another file that can be used. | |
4591 * First decrement the last char: ".swo", ".swn", etc. | |
4592 * If that still isn't enough decrement the last but one char: ".svz" | |
9 | 4593 * Can happen when editing many "No Name" buffers. |
7 | 4594 */ |
4595 if (fname[n - 1] == 'a') /* ".s?a" */ | |
4596 { | |
4597 if (fname[n - 2] == 'a') /* ".saa": tried enough, give up */ | |
4598 { | |
4599 EMSG(_("E326: Too many swap files found")); | |
4600 vim_free(fname); | |
4601 fname = NULL; | |
4602 break; | |
4603 } | |
4604 --fname[n - 2]; /* ".svz", ".suz", etc. */ | |
4605 fname[n - 1] = 'z' + 1; | |
4606 } | |
4607 --fname[n - 1]; /* ".swo", ".swn", etc. */ | |
4608 } | |
4609 | |
4610 vim_free(dir_name); | |
4611 #ifdef CREATE_DUMMY_FILE | |
4612 if (dummyfd != NULL) /* file has been created temporarily */ | |
4613 { | |
4614 fclose(dummyfd); | |
5432 | 4615 mch_remove(buf_fname); |
7 | 4616 } |
4617 #endif | |
5432 | 4618 #ifdef WIN3264 |
4619 if (buf_fname != buf->b_fname) | |
4620 vim_free(buf_fname); | |
4621 #endif | |
7 | 4622 return fname; |
4623 } | |
4624 | |
4625 static int | |
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4626 b0_magic_wrong(ZERO_BL *b0p) |
7 | 4627 { |
4628 return (b0p->b0_magic_long != (long)B0_MAGIC_LONG | |
4629 || b0p->b0_magic_int != (int)B0_MAGIC_INT | |
4630 || b0p->b0_magic_short != (short)B0_MAGIC_SHORT | |
4631 || b0p->b0_magic_char != B0_MAGIC_CHAR); | |
4632 } | |
4633 | |
4634 #ifdef CHECK_INODE | |
4635 /* | |
4636 * Compare current file name with file name from swap file. | |
4637 * Try to use inode numbers when possible. | |
4638 * Return non-zero when files are different. | |
4639 * | |
4640 * When comparing file names a few things have to be taken into consideration: | |
4641 * - When working over a network the full path of a file depends on the host. | |
4642 * We check the inode number if possible. It is not 100% reliable though, | |
4643 * because the device number cannot be used over a network. | |
4644 * - When a file does not exist yet (editing a new file) there is no inode | |
4645 * number. | |
4646 * - The file name in a swap file may not be valid on the current host. The | |
4647 * "~user" form is used whenever possible to avoid this. | |
4648 * | |
4649 * This is getting complicated, let's make a table: | |
4650 * | |
4651 * ino_c ino_s fname_c fname_s differ = | |
4652 * | |
4653 * both files exist -> compare inode numbers: | |
4654 * != 0 != 0 X X ino_c != ino_s | |
4655 * | |
4656 * inode number(s) unknown, file names available -> compare file names | |
4657 * == 0 X OK OK fname_c != fname_s | |
4658 * X == 0 OK OK fname_c != fname_s | |
4659 * | |
4660 * current file doesn't exist, file for swap file exist, file name(s) not | |
4661 * available -> probably different | |
4662 * == 0 != 0 FAIL X TRUE | |
4663 * == 0 != 0 X FAIL TRUE | |
4664 * | |
4665 * current file exists, inode for swap unknown, file name(s) not | |
4666 * available -> probably different | |
4667 * != 0 == 0 FAIL X TRUE | |
4668 * != 0 == 0 X FAIL TRUE | |
4669 * | |
4670 * current file doesn't exist, inode for swap unknown, one file name not | |
4671 * available -> probably different | |
4672 * == 0 == 0 FAIL OK TRUE | |
4673 * == 0 == 0 OK FAIL TRUE | |
4674 * | |
4675 * current file doesn't exist, inode for swap unknown, both file names not | |
4676 * available -> probably same file | |
4677 * == 0 == 0 FAIL FAIL FALSE | |
4678 * | |
4679 * Note that when the ino_t is 64 bits, only the last 32 will be used. This | |
4680 * can't be changed without making the block 0 incompatible with 32 bit | |
4681 * versions. | |
4682 */ | |
4683 | |
4684 static int | |
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diff
changeset
|
4685 fnamecmp_ino( |
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
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parents:
7803
diff
changeset
|
4686 char_u *fname_c, /* current file name */ |
41789f16d6b2
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parents:
7803
diff
changeset
|
4687 char_u *fname_s, /* file name from swap file */ |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
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parents:
7803
diff
changeset
|
4688 long ino_block0) |
7 | 4689 { |
4690 struct stat st; | |
4691 ino_t ino_c = 0; /* ino of current file */ | |
4692 ino_t ino_s; /* ino of file from swap file */ | |
4693 char_u buf_c[MAXPATHL]; /* full path of fname_c */ | |
4694 char_u buf_s[MAXPATHL]; /* full path of fname_s */ | |
4695 int retval_c; /* flag: buf_c valid */ | |
4696 int retval_s; /* flag: buf_s valid */ | |
4697 | |
4698 if (mch_stat((char *)fname_c, &st) == 0) | |
4699 ino_c = (ino_t)st.st_ino; | |
4700 | |
4701 /* | |
4702 * First we try to get the inode from the file name, because the inode in | |
4703 * the swap file may be outdated. If that fails (e.g. this path is not | |
4704 * valid on this machine), use the inode from block 0. | |
4705 */ | |
4706 if (mch_stat((char *)fname_s, &st) == 0) | |
4707 ino_s = (ino_t)st.st_ino; | |
4708 else | |
4709 ino_s = (ino_t)ino_block0; | |
4710 | |
4711 if (ino_c && ino_s) | |
4712 return (ino_c != ino_s); | |
4713 | |
4714 /* | |
4715 * One of the inode numbers is unknown, try a forced vim_FullName() and | |
4716 * compare the file names. | |
4717 */ | |
4718 retval_c = vim_FullName(fname_c, buf_c, MAXPATHL, TRUE); | |
4719 retval_s = vim_FullName(fname_s, buf_s, MAXPATHL, TRUE); | |
4720 if (retval_c == OK && retval_s == OK) | |
4721 return (STRCMP(buf_c, buf_s) != 0); | |
4722 | |
4723 /* | |
4724 * Can't compare inodes or file names, guess that the files are different, | |
4725 * unless both appear not to exist at all. | |
4726 */ | |
4727 if (ino_s == 0 && ino_c == 0 && retval_c == FAIL && retval_s == FAIL) | |
4728 return FALSE; | |
4729 return TRUE; | |
4730 } | |
4731 #endif /* CHECK_INODE */ | |
4732 | |
4733 /* | |
4734 * Move a long integer into a four byte character array. | |
4735 * Used for machine independency in block zero. | |
4736 */ | |
4737 static void | |
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parents:
7803
diff
changeset
|
4738 long_to_char(long n, char_u *s) |
7 | 4739 { |
4740 s[0] = (char_u)(n & 0xff); | |
4741 n = (unsigned)n >> 8; | |
4742 s[1] = (char_u)(n & 0xff); | |
4743 n = (unsigned)n >> 8; | |
4744 s[2] = (char_u)(n & 0xff); | |
4745 n = (unsigned)n >> 8; | |
4746 s[3] = (char_u)(n & 0xff); | |
4747 } | |
4748 | |
4749 static long | |
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parents:
7803
diff
changeset
|
4750 char_to_long(char_u *s) |
7 | 4751 { |
4752 long retval; | |
4753 | |
4754 retval = s[3]; | |
4755 retval <<= 8; | |
4756 retval |= s[2]; | |
4757 retval <<= 8; | |
4758 retval |= s[1]; | |
4759 retval <<= 8; | |
4760 retval |= s[0]; | |
4761 | |
4762 return retval; | |
4763 } | |
4764 | |
39 | 4765 /* |
4766 * Set the flags in the first block of the swap file: | |
4767 * - file is modified or not: buf->b_changed | |
4768 * - 'fileformat' | |
4769 * - 'fileencoding' | |
4770 */ | |
7 | 4771 void |
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parents:
7803
diff
changeset
|
4772 ml_setflags(buf_T *buf) |
7 | 4773 { |
4774 bhdr_T *hp; | |
4775 ZERO_BL *b0p; | |
4776 | |
4777 if (!buf->b_ml.ml_mfp) | |
4778 return; | |
4779 for (hp = buf->b_ml.ml_mfp->mf_used_last; hp != NULL; hp = hp->bh_prev) | |
4780 { | |
4781 if (hp->bh_bnum == 0) | |
4782 { | |
4783 b0p = (ZERO_BL *)(hp->bh_data); | |
39 | 4784 b0p->b0_dirty = buf->b_changed ? B0_DIRTY : 0; |
4785 b0p->b0_flags = (b0p->b0_flags & ~B0_FF_MASK) | |
4786 | (get_fileformat(buf) + 1); | |
4787 #ifdef FEAT_MBYTE | |
4788 add_b0_fenc(b0p, buf); | |
4789 #endif | |
7 | 4790 hp->bh_flags |= BH_DIRTY; |
4791 mf_sync(buf->b_ml.ml_mfp, MFS_ZERO); | |
4792 break; | |
4793 } | |
4794 } | |
4795 } | |
4796 | |
2267 | 4797 #if defined(FEAT_CRYPT) || defined(PROTO) |
4798 /* | |
4799 * If "data" points to a data block encrypt the text in it and return a copy | |
4800 * in allocated memory. Return NULL when out of memory. | |
4801 * Otherwise return "data". | |
4802 */ | |
4803 char_u * | |
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parents:
7803
diff
changeset
|
4804 ml_encrypt_data( |
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parents:
7803
diff
changeset
|
4805 memfile_T *mfp, |
41789f16d6b2
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parents:
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diff
changeset
|
4806 char_u *data, |
41789f16d6b2
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4807 off_t offset, |
41789f16d6b2
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4808 unsigned size) |
2267 | 4809 { |
4810 DATA_BL *dp = (DATA_BL *)data; | |
4811 char_u *head_end; | |
4812 char_u *text_start; | |
4813 char_u *new_data; | |
4814 int text_len; | |
6122 | 4815 cryptstate_T *state; |
2267 | 4816 |
4817 if (dp->db_id != DATA_ID) | |
4818 return data; | |
4819 | |
6817 | 4820 state = ml_crypt_prepare(mfp, offset, FALSE); |
4821 if (state == NULL) | |
4822 return data; | |
4823 | |
2267 | 4824 new_data = (char_u *)alloc(size); |
4825 if (new_data == NULL) | |
4826 return NULL; | |
4827 head_end = (char_u *)(&dp->db_index[dp->db_line_count]); | |
4828 text_start = (char_u *)dp + dp->db_txt_start; | |
4829 text_len = size - dp->db_txt_start; | |
4830 | |
4831 /* Copy the header and the text. */ | |
4832 mch_memmove(new_data, dp, head_end - (char_u *)dp); | |
4833 | |
4834 /* Encrypt the text. */ | |
6122 | 4835 crypt_encode(state, text_start, text_len, new_data + dp->db_txt_start); |
4836 crypt_free_state(state); | |
2267 | 4837 |
4838 /* Clear the gap. */ | |
4839 if (head_end < text_start) | |
4840 vim_memset(new_data + (head_end - data), 0, text_start - head_end); | |
4841 | |
4842 return new_data; | |
4843 } | |
4844 | |
4845 /* | |
6817 | 4846 * Decrypt the text in "data" if it points to an encrypted data block. |
2267 | 4847 */ |
4848 void | |
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parents:
7803
diff
changeset
|
4849 ml_decrypt_data( |
41789f16d6b2
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parents:
7803
diff
changeset
|
4850 memfile_T *mfp, |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4851 char_u *data, |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4852 off_t offset, |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4853 unsigned size) |
2267 | 4854 { |
4855 DATA_BL *dp = (DATA_BL *)data; | |
4856 char_u *head_end; | |
4857 char_u *text_start; | |
4858 int text_len; | |
6122 | 4859 cryptstate_T *state; |
2267 | 4860 |
4861 if (dp->db_id == DATA_ID) | |
4862 { | |
4863 head_end = (char_u *)(&dp->db_index[dp->db_line_count]); | |
4864 text_start = (char_u *)dp + dp->db_txt_start; | |
4865 text_len = dp->db_txt_end - dp->db_txt_start; | |
4866 | |
4867 if (head_end > text_start || dp->db_txt_start > size | |
4868 || dp->db_txt_end > size) | |
4869 return; /* data was messed up */ | |
4870 | |
6122 | 4871 state = ml_crypt_prepare(mfp, offset, TRUE); |
6817 | 4872 if (state != NULL) |
4873 { | |
4874 /* Decrypt the text in place. */ | |
4875 crypt_decode_inplace(state, text_start, text_len); | |
4876 crypt_free_state(state); | |
4877 } | |
2267 | 4878 } |
4879 } | |
4880 | |
4881 /* | |
4882 * Prepare for encryption/decryption, using the key, seed and offset. | |
6122 | 4883 * Return an allocated cryptstate_T *. |
2267 | 4884 */ |
6122 | 4885 static cryptstate_T * |
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4886 ml_crypt_prepare(memfile_T *mfp, off_t offset, int reading) |
2267 | 4887 { |
4888 buf_T *buf = mfp->mf_buffer; | |
4889 char_u salt[50]; | |
6122 | 4890 int method_nr; |
2267 | 4891 char_u *key; |
4892 char_u *seed; | |
4893 | |
4894 if (reading && mfp->mf_old_key != NULL) | |
4895 { | |
4896 /* Reading back blocks with the previous key/method/seed. */ | |
6122 | 4897 method_nr = mfp->mf_old_cm; |
2267 | 4898 key = mfp->mf_old_key; |
4899 seed = mfp->mf_old_seed; | |
4900 } | |
4901 else | |
4902 { | |
6122 | 4903 method_nr = crypt_get_method_nr(buf); |
2267 | 4904 key = buf->b_p_key; |
4905 seed = mfp->mf_seed; | |
4906 } | |
6817 | 4907 if (*key == NUL) |
4908 return NULL; | |
2267 | 4909 |
6122 | 4910 if (method_nr == CRYPT_M_ZIP) |
2267 | 4911 { |
6122 | 4912 /* For PKzip: Append the offset to the key, so that we use a different |
4913 * key for every block. */ | |
2267 | 4914 vim_snprintf((char *)salt, sizeof(salt), "%s%ld", key, (long)offset); |
6122 | 4915 return crypt_create(method_nr, salt, NULL, 0, NULL, 0); |
2267 | 4916 } |
6122 | 4917 |
4918 /* Using blowfish or better: add salt and seed. We use the byte offset | |
4919 * of the block for the salt. */ | |
4920 vim_snprintf((char *)salt, sizeof(salt), "%ld", (long)offset); | |
4921 return crypt_create(method_nr, key, salt, (int)STRLEN(salt), | |
4922 seed, MF_SEED_LEN); | |
2267 | 4923 } |
4924 | |
4925 #endif | |
4926 | |
4927 | |
7 | 4928 #if defined(FEAT_BYTEOFF) || defined(PROTO) |
4929 | |
4930 #define MLCS_MAXL 800 /* max no of lines in chunk */ | |
4931 #define MLCS_MINL 400 /* should be half of MLCS_MAXL */ | |
4932 | |
4933 /* | |
2407
6bc102a4bff8
Fix memory access to 'cryptmethod' during recovery. (Dominique Pelle)
Bram Moolenaar <bram@vim.org>
parents:
2394
diff
changeset
|
4934 * Keep information for finding byte offset of a line, updtype may be one of: |
7 | 4935 * ML_CHNK_ADDLINE: Add len to parent chunk, possibly splitting it |
4936 * Careful: ML_CHNK_ADDLINE may cause ml_find_line() to be called. | |
4937 * ML_CHNK_DELLINE: Subtract len from parent chunk, possibly deleting it | |
4938 * ML_CHNK_UPDLINE: Add len to parent chunk, as a signed entity. | |
4939 */ | |
4940 static void | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4941 ml_updatechunk( |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4942 buf_T *buf, |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4943 linenr_T line, |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4944 long len, |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4945 int updtype) |
7 | 4946 { |
4947 static buf_T *ml_upd_lastbuf = NULL; | |
4948 static linenr_T ml_upd_lastline; | |
4949 static linenr_T ml_upd_lastcurline; | |
4950 static int ml_upd_lastcurix; | |
4951 | |
4952 linenr_T curline = ml_upd_lastcurline; | |
4953 int curix = ml_upd_lastcurix; | |
4954 long size; | |
4955 chunksize_T *curchnk; | |
4956 int rest; | |
4957 bhdr_T *hp; | |
4958 DATA_BL *dp; | |
4959 | |
4960 if (buf->b_ml.ml_usedchunks == -1 || len == 0) | |
4961 return; | |
4962 if (buf->b_ml.ml_chunksize == NULL) | |
4963 { | |
4964 buf->b_ml.ml_chunksize = (chunksize_T *) | |
4965 alloc((unsigned)sizeof(chunksize_T) * 100); | |
4966 if (buf->b_ml.ml_chunksize == NULL) | |
4967 { | |
4968 buf->b_ml.ml_usedchunks = -1; | |
4969 return; | |
4970 } | |
4971 buf->b_ml.ml_numchunks = 100; | |
4972 buf->b_ml.ml_usedchunks = 1; | |
4973 buf->b_ml.ml_chunksize[0].mlcs_numlines = 1; | |
4974 buf->b_ml.ml_chunksize[0].mlcs_totalsize = 1; | |
4975 } | |
4976 | |
4977 if (updtype == ML_CHNK_UPDLINE && buf->b_ml.ml_line_count == 1) | |
4978 { | |
4979 /* | |
4980 * First line in empty buffer from ml_flush_line() -- reset | |
4981 */ | |
4982 buf->b_ml.ml_usedchunks = 1; | |
4983 buf->b_ml.ml_chunksize[0].mlcs_numlines = 1; | |
4984 buf->b_ml.ml_chunksize[0].mlcs_totalsize = | |
4985 (long)STRLEN(buf->b_ml.ml_line_ptr) + 1; | |
4986 return; | |
4987 } | |
4988 | |
4989 /* | |
4990 * Find chunk that our line belongs to, curline will be at start of the | |
4991 * chunk. | |
4992 */ | |
4993 if (buf != ml_upd_lastbuf || line != ml_upd_lastline + 1 | |
4994 || updtype != ML_CHNK_ADDLINE) | |
4995 { | |
4996 for (curline = 1, curix = 0; | |
4997 curix < buf->b_ml.ml_usedchunks - 1 | |
4998 && line >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
4999 curix++) | |
5000 { | |
5001 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
5002 } | |
5003 } | |
5004 else if (line >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines | |
5005 && curix < buf->b_ml.ml_usedchunks - 1) | |
5006 { | |
5007 /* Adjust cached curix & curline */ | |
5008 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
5009 curix++; | |
5010 } | |
5011 curchnk = buf->b_ml.ml_chunksize + curix; | |
5012 | |
5013 if (updtype == ML_CHNK_DELLINE) | |
1030 | 5014 len = -len; |
7 | 5015 curchnk->mlcs_totalsize += len; |
5016 if (updtype == ML_CHNK_ADDLINE) | |
5017 { | |
5018 curchnk->mlcs_numlines++; | |
5019 | |
5020 /* May resize here so we don't have to do it in both cases below */ | |
5021 if (buf->b_ml.ml_usedchunks + 1 >= buf->b_ml.ml_numchunks) | |
5022 { | |
6596 | 5023 chunksize_T *t_chunksize = buf->b_ml.ml_chunksize; |
5024 | |
7 | 5025 buf->b_ml.ml_numchunks = buf->b_ml.ml_numchunks * 3 / 2; |
5026 buf->b_ml.ml_chunksize = (chunksize_T *) | |
5027 vim_realloc(buf->b_ml.ml_chunksize, | |
5028 sizeof(chunksize_T) * buf->b_ml.ml_numchunks); | |
5029 if (buf->b_ml.ml_chunksize == NULL) | |
5030 { | |
5031 /* Hmmmm, Give up on offset for this buffer */ | |
6596 | 5032 vim_free(t_chunksize); |
7 | 5033 buf->b_ml.ml_usedchunks = -1; |
5034 return; | |
5035 } | |
5036 } | |
5037 | |
5038 if (buf->b_ml.ml_chunksize[curix].mlcs_numlines >= MLCS_MAXL) | |
5039 { | |
5040 int count; /* number of entries in block */ | |
5041 int idx; | |
5042 int text_end; | |
5043 int linecnt; | |
5044 | |
5045 mch_memmove(buf->b_ml.ml_chunksize + curix + 1, | |
5046 buf->b_ml.ml_chunksize + curix, | |
5047 (buf->b_ml.ml_usedchunks - curix) * | |
5048 sizeof(chunksize_T)); | |
1855 | 5049 /* Compute length of first half of lines in the split chunk */ |
7 | 5050 size = 0; |
5051 linecnt = 0; | |
5052 while (curline < buf->b_ml.ml_line_count | |
5053 && linecnt < MLCS_MINL) | |
5054 { | |
5055 if ((hp = ml_find_line(buf, curline, ML_FIND)) == NULL) | |
5056 { | |
5057 buf->b_ml.ml_usedchunks = -1; | |
5058 return; | |
5059 } | |
5060 dp = (DATA_BL *)(hp->bh_data); | |
5061 count = (long)(buf->b_ml.ml_locked_high) - | |
5062 (long)(buf->b_ml.ml_locked_low) + 1; | |
5063 idx = curline - buf->b_ml.ml_locked_low; | |
5064 curline = buf->b_ml.ml_locked_high + 1; | |
5065 if (idx == 0)/* first line in block, text at the end */ | |
5066 text_end = dp->db_txt_end; | |
5067 else | |
5068 text_end = ((dp->db_index[idx - 1]) & DB_INDEX_MASK); | |
5069 /* Compute index of last line to use in this MEMLINE */ | |
5070 rest = count - idx; | |
5071 if (linecnt + rest > MLCS_MINL) | |
5072 { | |
5073 idx += MLCS_MINL - linecnt - 1; | |
5074 linecnt = MLCS_MINL; | |
5075 } | |
5076 else | |
5077 { | |
5078 idx = count - 1; | |
5079 linecnt += rest; | |
5080 } | |
5081 size += text_end - ((dp->db_index[idx]) & DB_INDEX_MASK); | |
5082 } | |
5083 buf->b_ml.ml_chunksize[curix].mlcs_numlines = linecnt; | |
5084 buf->b_ml.ml_chunksize[curix + 1].mlcs_numlines -= linecnt; | |
5085 buf->b_ml.ml_chunksize[curix].mlcs_totalsize = size; | |
5086 buf->b_ml.ml_chunksize[curix + 1].mlcs_totalsize -= size; | |
5087 buf->b_ml.ml_usedchunks++; | |
5088 ml_upd_lastbuf = NULL; /* Force recalc of curix & curline */ | |
5089 return; | |
5090 } | |
5091 else if (buf->b_ml.ml_chunksize[curix].mlcs_numlines >= MLCS_MINL | |
5092 && curix == buf->b_ml.ml_usedchunks - 1 | |
5093 && buf->b_ml.ml_line_count - line <= 1) | |
5094 { | |
5095 /* | |
5096 * We are in the last chunk and it is cheap to crate a new one | |
5097 * after this. Do it now to avoid the loop above later on | |
5098 */ | |
5099 curchnk = buf->b_ml.ml_chunksize + curix + 1; | |
5100 buf->b_ml.ml_usedchunks++; | |
5101 if (line == buf->b_ml.ml_line_count) | |
5102 { | |
5103 curchnk->mlcs_numlines = 0; | |
5104 curchnk->mlcs_totalsize = 0; | |
5105 } | |
5106 else | |
5107 { | |
5108 /* | |
5109 * Line is just prior to last, move count for last | |
5110 * This is the common case when loading a new file | |
5111 */ | |
5112 hp = ml_find_line(buf, buf->b_ml.ml_line_count, ML_FIND); | |
5113 if (hp == NULL) | |
5114 { | |
5115 buf->b_ml.ml_usedchunks = -1; | |
5116 return; | |
5117 } | |
5118 dp = (DATA_BL *)(hp->bh_data); | |
5119 if (dp->db_line_count == 1) | |
5120 rest = dp->db_txt_end - dp->db_txt_start; | |
5121 else | |
5122 rest = | |
5123 ((dp->db_index[dp->db_line_count - 2]) & DB_INDEX_MASK) | |
5124 - dp->db_txt_start; | |
5125 curchnk->mlcs_totalsize = rest; | |
5126 curchnk->mlcs_numlines = 1; | |
5127 curchnk[-1].mlcs_totalsize -= rest; | |
5128 curchnk[-1].mlcs_numlines -= 1; | |
5129 } | |
5130 } | |
5131 } | |
5132 else if (updtype == ML_CHNK_DELLINE) | |
5133 { | |
5134 curchnk->mlcs_numlines--; | |
5135 ml_upd_lastbuf = NULL; /* Force recalc of curix & curline */ | |
5136 if (curix < (buf->b_ml.ml_usedchunks - 1) | |
5137 && (curchnk->mlcs_numlines + curchnk[1].mlcs_numlines) | |
5138 <= MLCS_MINL) | |
5139 { | |
5140 curix++; | |
5141 curchnk = buf->b_ml.ml_chunksize + curix; | |
5142 } | |
5143 else if (curix == 0 && curchnk->mlcs_numlines <= 0) | |
5144 { | |
5145 buf->b_ml.ml_usedchunks--; | |
5146 mch_memmove(buf->b_ml.ml_chunksize, buf->b_ml.ml_chunksize + 1, | |
5147 buf->b_ml.ml_usedchunks * sizeof(chunksize_T)); | |
5148 return; | |
5149 } | |
5150 else if (curix == 0 || (curchnk->mlcs_numlines > 10 | |
5151 && (curchnk->mlcs_numlines + curchnk[-1].mlcs_numlines) | |
5152 > MLCS_MINL)) | |
5153 { | |
5154 return; | |
5155 } | |
5156 | |
5157 /* Collapse chunks */ | |
5158 curchnk[-1].mlcs_numlines += curchnk->mlcs_numlines; | |
5159 curchnk[-1].mlcs_totalsize += curchnk->mlcs_totalsize; | |
5160 buf->b_ml.ml_usedchunks--; | |
5161 if (curix < buf->b_ml.ml_usedchunks) | |
5162 { | |
5163 mch_memmove(buf->b_ml.ml_chunksize + curix, | |
5164 buf->b_ml.ml_chunksize + curix + 1, | |
5165 (buf->b_ml.ml_usedchunks - curix) * | |
5166 sizeof(chunksize_T)); | |
5167 } | |
5168 return; | |
5169 } | |
5170 ml_upd_lastbuf = buf; | |
5171 ml_upd_lastline = line; | |
5172 ml_upd_lastcurline = curline; | |
5173 ml_upd_lastcurix = curix; | |
5174 } | |
5175 | |
5176 /* | |
5177 * Find offset for line or line with offset. | |
169 | 5178 * Find line with offset if "lnum" is 0; return remaining offset in offp |
5179 * Find offset of line if "lnum" > 0 | |
7 | 5180 * return -1 if information is not available |
5181 */ | |
5182 long | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
5183 ml_find_line_or_offset(buf_T *buf, linenr_T lnum, long *offp) |
7 | 5184 { |
5185 linenr_T curline; | |
5186 int curix; | |
5187 long size; | |
5188 bhdr_T *hp; | |
5189 DATA_BL *dp; | |
5190 int count; /* number of entries in block */ | |
5191 int idx; | |
5192 int start_idx; | |
5193 int text_end; | |
5194 long offset; | |
5195 int len; | |
5196 int ffdos = (get_fileformat(buf) == EOL_DOS); | |
5197 int extra = 0; | |
5198 | |
169 | 5199 /* take care of cached line first */ |
5200 ml_flush_line(curbuf); | |
5201 | |
7 | 5202 if (buf->b_ml.ml_usedchunks == -1 |
5203 || buf->b_ml.ml_chunksize == NULL | |
169 | 5204 || lnum < 0) |
7 | 5205 return -1; |
5206 | |
5207 if (offp == NULL) | |
5208 offset = 0; | |
5209 else | |
5210 offset = *offp; | |
169 | 5211 if (lnum == 0 && offset <= 0) |
7 | 5212 return 1; /* Not a "find offset" and offset 0 _must_ be in line 1 */ |
5213 /* | |
5214 * Find the last chunk before the one containing our line. Last chunk is | |
5215 * special because it will never qualify | |
5216 */ | |
5217 curline = 1; | |
5218 curix = size = 0; | |
5219 while (curix < buf->b_ml.ml_usedchunks - 1 | |
169 | 5220 && ((lnum != 0 |
5221 && lnum >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines) | |
7 | 5222 || (offset != 0 |
5223 && offset > size + buf->b_ml.ml_chunksize[curix].mlcs_totalsize | |
5224 + ffdos * buf->b_ml.ml_chunksize[curix].mlcs_numlines))) | |
5225 { | |
5226 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
5227 size += buf->b_ml.ml_chunksize[curix].mlcs_totalsize; | |
5228 if (offset && ffdos) | |
5229 size += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
5230 curix++; | |
5231 } | |
5232 | |
169 | 5233 while ((lnum != 0 && curline < lnum) || (offset != 0 && size < offset)) |
7 | 5234 { |
5235 if (curline > buf->b_ml.ml_line_count | |
5236 || (hp = ml_find_line(buf, curline, ML_FIND)) == NULL) | |
5237 return -1; | |
5238 dp = (DATA_BL *)(hp->bh_data); | |
5239 count = (long)(buf->b_ml.ml_locked_high) - | |
5240 (long)(buf->b_ml.ml_locked_low) + 1; | |
5241 start_idx = idx = curline - buf->b_ml.ml_locked_low; | |
5242 if (idx == 0)/* first line in block, text at the end */ | |
5243 text_end = dp->db_txt_end; | |
5244 else | |
5245 text_end = ((dp->db_index[idx - 1]) & DB_INDEX_MASK); | |
5246 /* Compute index of last line to use in this MEMLINE */ | |
169 | 5247 if (lnum != 0) |
7 | 5248 { |
169 | 5249 if (curline + (count - idx) >= lnum) |
5250 idx += lnum - curline - 1; | |
7 | 5251 else |
5252 idx = count - 1; | |
5253 } | |
5254 else | |
5255 { | |
5256 extra = 0; | |
5257 while (offset >= size | |
5258 + text_end - (int)((dp->db_index[idx]) & DB_INDEX_MASK) | |
5259 + ffdos) | |
5260 { | |
5261 if (ffdos) | |
5262 size++; | |
5263 if (idx == count - 1) | |
5264 { | |
5265 extra = 1; | |
5266 break; | |
5267 } | |
5268 idx++; | |
5269 } | |
5270 } | |
5271 len = text_end - ((dp->db_index[idx]) & DB_INDEX_MASK); | |
5272 size += len; | |
5273 if (offset != 0 && size >= offset) | |
5274 { | |
5275 if (size + ffdos == offset) | |
5276 *offp = 0; | |
5277 else if (idx == start_idx) | |
5278 *offp = offset - size + len; | |
5279 else | |
5280 *offp = offset - size + len | |
5281 - (text_end - ((dp->db_index[idx - 1]) & DB_INDEX_MASK)); | |
5282 curline += idx - start_idx + extra; | |
5283 if (curline > buf->b_ml.ml_line_count) | |
5284 return -1; /* exactly one byte beyond the end */ | |
5285 return curline; | |
5286 } | |
5287 curline = buf->b_ml.ml_locked_high + 1; | |
5288 } | |
5289 | |
169 | 5290 if (lnum != 0) |
20 | 5291 { |
5292 /* Count extra CR characters. */ | |
5293 if (ffdos) | |
169 | 5294 size += lnum - 1; |
20 | 5295 |
6933 | 5296 /* Don't count the last line break if 'noeol' and ('bin' or |
5297 * 'nofixeol'). */ | |
5298 if ((!buf->b_p_fixeol || buf->b_p_bin) && !buf->b_p_eol | |
5299 && buf->b_ml.ml_line_count == lnum) | |
20 | 5300 size -= ffdos + 1; |
5301 } | |
5302 | |
7 | 5303 return size; |
5304 } | |
5305 | |
5306 /* | |
5307 * Goto byte in buffer with offset 'cnt'. | |
5308 */ | |
5309 void | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
5310 goto_byte(long cnt) |
7 | 5311 { |
5312 long boff = cnt; | |
5313 linenr_T lnum; | |
5314 | |
5315 ml_flush_line(curbuf); /* cached line may be dirty */ | |
5316 setpcmark(); | |
5317 if (boff) | |
5318 --boff; | |
5319 lnum = ml_find_line_or_offset(curbuf, (linenr_T)0, &boff); | |
5320 if (lnum < 1) /* past the end */ | |
5321 { | |
5322 curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; | |
5323 curwin->w_curswant = MAXCOL; | |
5324 coladvance((colnr_T)MAXCOL); | |
5325 } | |
5326 else | |
5327 { | |
5328 curwin->w_cursor.lnum = lnum; | |
5329 curwin->w_cursor.col = (colnr_T)boff; | |
572 | 5330 # ifdef FEAT_VIRTUALEDIT |
5331 curwin->w_cursor.coladd = 0; | |
5332 # endif | |
7 | 5333 curwin->w_set_curswant = TRUE; |
5334 } | |
5335 check_cursor(); | |
5336 | |
5337 # ifdef FEAT_MBYTE | |
5338 /* Make sure the cursor is on the first byte of a multi-byte char. */ | |
5339 if (has_mbyte) | |
5340 mb_adjust_cursor(); | |
5341 # endif | |
5342 } | |
5343 #endif |