Mercurial > vim
annotate src/memline.c @ 14599:72d6f6f7ead7 v8.1.0313
patch 8.1.0313: information about a swap file is unavailable
commit https://github.com/vim/vim/commit/00f123a56585363cd13f062fd3bb123efcfaa664
Author: Bram Moolenaar <Bram@vim.org>
Date: Tue Aug 21 20:28:54 2018 +0200
patch 8.1.0313: information about a swap file is unavailable
Problem: Information about a swap file is unavailable.
Solution: Add swapinfo(). (Enzo Ferber)
author | Christian Brabandt <cb@256bit.org> |
---|---|
date | Tue, 21 Aug 2018 20:30:05 +0200 |
parents | b6b2f7d69c7f |
children | d0ff19a55579 |
rev | line source |
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commit https://github.com/vim/vim/commit/edf3f97ae2af024708ebb4ac614227327033ca47
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1 /* vi:set ts=8 sts=4 sw=4 noet: |
7 | 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 */ | |
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11 /* #define CHECK(c, s) do { if (c) EMSG(s); } while (0) */ |
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12 #define CHECK(c, s) do { /**/ } while (0) |
7 | 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 *); |
2267 | 265 #ifdef FEAT_CRYPT |
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266 static cryptstate_T *ml_crypt_prepare(memfile_T *mfp, off_T offset, int reading); |
2267 | 267 #endif |
7 | 268 #ifdef FEAT_BYTEOFF |
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269 static void ml_updatechunk(buf_T *buf, long line, long len, int updtype); |
7 | 270 #endif |
271 | |
272 /* | |
625 | 273 * Open a new memline for "buf". |
7 | 274 * |
625 | 275 * Return FAIL for failure, OK otherwise. |
7 | 276 */ |
277 int | |
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278 ml_open(buf_T *buf) |
7 | 279 { |
280 memfile_T *mfp; | |
281 bhdr_T *hp = NULL; | |
282 ZERO_BL *b0p; | |
283 PTR_BL *pp; | |
284 DATA_BL *dp; | |
285 | |
625 | 286 /* |
287 * init fields in memline struct | |
288 */ | |
2267 | 289 buf->b_ml.ml_stack_size = 0; /* no stack yet */ |
625 | 290 buf->b_ml.ml_stack = NULL; /* no stack yet */ |
291 buf->b_ml.ml_stack_top = 0; /* nothing in the stack */ | |
292 buf->b_ml.ml_locked = NULL; /* no cached block */ | |
293 buf->b_ml.ml_line_lnum = 0; /* no cached line */ | |
7 | 294 #ifdef FEAT_BYTEOFF |
625 | 295 buf->b_ml.ml_chunksize = NULL; |
7 | 296 #endif |
297 | |
5737 | 298 if (cmdmod.noswapfile) |
299 buf->b_p_swf = FALSE; | |
300 | |
625 | 301 /* |
302 * When 'updatecount' is non-zero swap file may be opened later. | |
303 */ | |
304 if (p_uc && buf->b_p_swf) | |
305 buf->b_may_swap = TRUE; | |
7 | 306 else |
625 | 307 buf->b_may_swap = FALSE; |
308 | |
309 /* | |
310 * Open the memfile. No swap file is created yet. | |
311 */ | |
7 | 312 mfp = mf_open(NULL, 0); |
313 if (mfp == NULL) | |
314 goto error; | |
315 | |
625 | 316 buf->b_ml.ml_mfp = mfp; |
2267 | 317 #ifdef FEAT_CRYPT |
318 mfp->mf_buffer = buf; | |
319 #endif | |
625 | 320 buf->b_ml.ml_flags = ML_EMPTY; |
321 buf->b_ml.ml_line_count = 1; | |
13 | 322 #ifdef FEAT_LINEBREAK |
323 curwin->w_nrwidth_line_count = 0; | |
324 #endif | |
7 | 325 |
326 /* | |
327 * fill block0 struct and write page 0 | |
328 */ | |
329 if ((hp = mf_new(mfp, FALSE, 1)) == NULL) | |
330 goto error; | |
331 if (hp->bh_bnum != 0) | |
332 { | |
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333 IEMSG(_("E298: Didn't get block nr 0?")); |
7 | 334 goto error; |
335 } | |
336 b0p = (ZERO_BL *)(hp->bh_data); | |
337 | |
338 b0p->b0_id[0] = BLOCK0_ID0; | |
339 b0p->b0_id[1] = BLOCK0_ID1; | |
340 b0p->b0_magic_long = (long)B0_MAGIC_LONG; | |
341 b0p->b0_magic_int = (int)B0_MAGIC_INT; | |
342 b0p->b0_magic_short = (short)B0_MAGIC_SHORT; | |
343 b0p->b0_magic_char = B0_MAGIC_CHAR; | |
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344 mch_memmove(b0p->b0_version, "VIM ", 4); |
7 | 345 STRNCPY(b0p->b0_version + 4, Version, 6); |
346 long_to_char((long)mfp->mf_page_size, b0p->b0_page_size); | |
625 | 347 |
800 | 348 #ifdef FEAT_SPELL |
349 if (!buf->b_spell) | |
350 #endif | |
625 | 351 { |
352 b0p->b0_dirty = buf->b_changed ? B0_DIRTY : 0; | |
353 b0p->b0_flags = get_fileformat(buf) + 1; | |
354 set_b0_fname(b0p, buf); | |
355 (void)get_user_name(b0p->b0_uname, B0_UNAME_SIZE); | |
356 b0p->b0_uname[B0_UNAME_SIZE - 1] = NUL; | |
357 mch_get_host_name(b0p->b0_hname, B0_HNAME_SIZE); | |
358 b0p->b0_hname[B0_HNAME_SIZE - 1] = NUL; | |
359 long_to_char(mch_get_pid(), b0p->b0_pid); | |
2267 | 360 #ifdef FEAT_CRYPT |
6122 | 361 ml_set_b0_crypt(buf, b0p); |
2267 | 362 #endif |
625 | 363 } |
7 | 364 |
365 /* | |
366 * Always sync block number 0 to disk, so we can check the file name in | |
2267 | 367 * the swap file in findswapname(). Don't do this for a help files or |
368 * a spell buffer though. | |
7 | 369 * Only works when there's a swapfile, otherwise it's done when the file |
370 * is created. | |
371 */ | |
372 mf_put(mfp, hp, TRUE, FALSE); | |
625 | 373 if (!buf->b_help && !B_SPELL(buf)) |
7 | 374 (void)mf_sync(mfp, 0); |
375 | |
625 | 376 /* |
377 * Fill in root pointer block and write page 1. | |
378 */ | |
7 | 379 if ((hp = ml_new_ptr(mfp)) == NULL) |
380 goto error; | |
381 if (hp->bh_bnum != 1) | |
382 { | |
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383 IEMSG(_("E298: Didn't get block nr 1?")); |
7 | 384 goto error; |
385 } | |
386 pp = (PTR_BL *)(hp->bh_data); | |
387 pp->pb_count = 1; | |
388 pp->pb_pointer[0].pe_bnum = 2; | |
389 pp->pb_pointer[0].pe_page_count = 1; | |
390 pp->pb_pointer[0].pe_old_lnum = 1; | |
391 pp->pb_pointer[0].pe_line_count = 1; /* line count after insertion */ | |
392 mf_put(mfp, hp, TRUE, FALSE); | |
393 | |
625 | 394 /* |
395 * Allocate first data block and create an empty line 1. | |
396 */ | |
7 | 397 if ((hp = ml_new_data(mfp, FALSE, 1)) == NULL) |
398 goto error; | |
399 if (hp->bh_bnum != 2) | |
400 { | |
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401 IEMSG(_("E298: Didn't get block nr 2?")); |
7 | 402 goto error; |
403 } | |
404 | |
405 dp = (DATA_BL *)(hp->bh_data); | |
406 dp->db_index[0] = --dp->db_txt_start; /* at end of block */ | |
407 dp->db_free -= 1 + INDEX_SIZE; | |
408 dp->db_line_count = 1; | |
2003 | 409 *((char_u *)dp + dp->db_txt_start) = NUL; /* empty line */ |
7 | 410 |
411 return OK; | |
412 | |
413 error: | |
414 if (mfp != NULL) | |
415 { | |
416 if (hp) | |
417 mf_put(mfp, hp, FALSE, FALSE); | |
418 mf_close(mfp, TRUE); /* will also free(mfp->mf_fname) */ | |
419 } | |
625 | 420 buf->b_ml.ml_mfp = NULL; |
7 | 421 return FAIL; |
422 } | |
423 | |
2267 | 424 #if defined(FEAT_CRYPT) || defined(PROTO) |
425 /* | |
6130 | 426 * Prepare encryption for "buf" for the current key and method. |
427 */ | |
428 static void | |
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429 ml_set_mfp_crypt(buf_T *buf) |
6130 | 430 { |
431 if (*buf->b_p_key != NUL) | |
432 { | |
433 int method_nr = crypt_get_method_nr(buf); | |
434 | |
435 if (method_nr > CRYPT_M_ZIP) | |
436 { | |
437 /* Generate a seed and store it in the memfile. */ | |
438 sha2_seed(buf->b_ml.ml_mfp->mf_seed, MF_SEED_LEN, NULL, 0); | |
439 } | |
440 } | |
441 } | |
442 | |
443 /* | |
2267 | 444 * Prepare encryption for "buf" with block 0 "b0p". |
445 */ | |
446 static void | |
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447 ml_set_b0_crypt(buf_T *buf, ZERO_BL *b0p) |
2267 | 448 { |
449 if (*buf->b_p_key == NUL) | |
450 b0p->b0_id[1] = BLOCK0_ID1; | |
451 else | |
452 { | |
6122 | 453 int method_nr = crypt_get_method_nr(buf); |
454 | |
455 b0p->b0_id[1] = id1_codes[method_nr]; | |
456 if (method_nr > CRYPT_M_ZIP) | |
2267 | 457 { |
458 /* Generate a seed and store it in block 0 and in the memfile. */ | |
459 sha2_seed(&b0p->b0_seed, MF_SEED_LEN, NULL, 0); | |
460 mch_memmove(buf->b_ml.ml_mfp->mf_seed, &b0p->b0_seed, MF_SEED_LEN); | |
461 } | |
462 } | |
463 } | |
464 | |
465 /* | |
466 * Called after the crypt key or 'cryptmethod' was changed for "buf". | |
467 * Will apply this to the swapfile. | |
468 * "old_key" is the previous key. It is equal to buf->b_p_key when | |
469 * 'cryptmethod' is changed. | |
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470 * "old_cm" is the previous 'cryptmethod'. It is equal to the current |
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471 * 'cryptmethod' when 'key' is changed. |
2267 | 472 */ |
473 void | |
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474 ml_set_crypt_key( |
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475 buf_T *buf, |
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476 char_u *old_key, |
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477 char_u *old_cm) |
2267 | 478 { |
479 memfile_T *mfp = buf->b_ml.ml_mfp; | |
480 bhdr_T *hp; | |
481 int page_count; | |
482 int idx; | |
483 long error; | |
484 infoptr_T *ip; | |
485 PTR_BL *pp; | |
486 DATA_BL *dp; | |
487 blocknr_T bnum; | |
488 int top; | |
6817 | 489 int old_method; |
2267 | 490 |
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491 if (mfp == NULL) |
2267 | 492 return; /* no memfile yet, nothing to do */ |
6817 | 493 old_method = crypt_method_nr_from_name(old_cm); |
494 | |
495 /* First make sure the swapfile is in a consistent state, using the old | |
496 * key and method. */ | |
497 { | |
498 char_u *new_key = buf->b_p_key; | |
499 char_u *new_buf_cm = buf->b_p_cm; | |
500 | |
501 buf->b_p_key = old_key; | |
502 buf->b_p_cm = old_cm; | |
503 ml_preserve(buf, FALSE); | |
504 buf->b_p_key = new_key; | |
505 buf->b_p_cm = new_buf_cm; | |
506 } | |
2267 | 507 |
508 /* Set the key, method and seed to be used for reading, these must be the | |
509 * old values. */ | |
510 mfp->mf_old_key = old_key; | |
6817 | 511 mfp->mf_old_cm = old_method; |
512 if (old_method > 0 && *old_key != NUL) | |
2267 | 513 mch_memmove(mfp->mf_old_seed, mfp->mf_seed, MF_SEED_LEN); |
514 | |
515 /* Update block 0 with the crypt flag and may set a new seed. */ | |
516 ml_upd_block0(buf, UB_CRYPT); | |
517 | |
518 if (mfp->mf_infile_count > 2) | |
519 { | |
520 /* | |
521 * Need to read back all data blocks from disk, decrypt them with the | |
522 * old key/method and mark them to be written. The algorithm is | |
523 * similar to what happens in ml_recover(), but we skip negative block | |
524 * numbers. | |
525 */ | |
526 ml_flush_line(buf); /* flush buffered line */ | |
527 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
528 | |
529 hp = NULL; | |
530 bnum = 1; /* start with block 1 */ | |
531 page_count = 1; /* which is 1 page */ | |
532 idx = 0; /* start with first index in block 1 */ | |
533 error = 0; | |
534 buf->b_ml.ml_stack_top = 0; | |
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535 VIM_CLEAR(buf->b_ml.ml_stack); |
2267 | 536 buf->b_ml.ml_stack_size = 0; /* no stack yet */ |
537 | |
538 for ( ; !got_int; line_breakcheck()) | |
539 { | |
540 if (hp != NULL) | |
541 mf_put(mfp, hp, FALSE, FALSE); /* release previous block */ | |
542 | |
543 /* get the block (pointer or data) */ | |
544 if ((hp = mf_get(mfp, (blocknr_T)bnum, page_count)) == NULL) | |
545 { | |
546 if (bnum == 1) | |
547 break; | |
548 ++error; | |
549 } | |
550 else | |
551 { | |
552 pp = (PTR_BL *)(hp->bh_data); | |
553 if (pp->pb_id == PTR_ID) /* it is a pointer block */ | |
554 { | |
555 if (pp->pb_count == 0) | |
556 { | |
557 /* empty block? */ | |
558 ++error; | |
559 } | |
560 else if (idx < (int)pp->pb_count) /* go a block deeper */ | |
561 { | |
562 if (pp->pb_pointer[idx].pe_bnum < 0) | |
563 { | |
6817 | 564 /* Skip data block with negative block number. |
565 * Should not happen, because of the ml_preserve() | |
566 * above. Get same block again for next index. */ | |
567 ++idx; | |
2267 | 568 continue; |
569 } | |
570 | |
571 /* going one block deeper in the tree, new entry in | |
572 * stack */ | |
573 if ((top = ml_add_stack(buf)) < 0) | |
574 { | |
575 ++error; | |
576 break; /* out of memory */ | |
577 } | |
578 ip = &(buf->b_ml.ml_stack[top]); | |
579 ip->ip_bnum = bnum; | |
580 ip->ip_index = idx; | |
581 | |
582 bnum = pp->pb_pointer[idx].pe_bnum; | |
583 page_count = pp->pb_pointer[idx].pe_page_count; | |
6817 | 584 idx = 0; |
2267 | 585 continue; |
586 } | |
587 } | |
588 else /* not a pointer block */ | |
589 { | |
590 dp = (DATA_BL *)(hp->bh_data); | |
591 if (dp->db_id != DATA_ID) /* block id wrong */ | |
592 ++error; | |
593 else | |
594 { | |
595 /* It is a data block, need to write it back to disk. */ | |
596 mf_put(mfp, hp, TRUE, FALSE); | |
597 hp = NULL; | |
598 } | |
599 } | |
600 } | |
601 | |
602 if (buf->b_ml.ml_stack_top == 0) /* finished */ | |
603 break; | |
604 | |
605 /* go one block up in the tree */ | |
606 ip = &(buf->b_ml.ml_stack[--(buf->b_ml.ml_stack_top)]); | |
607 bnum = ip->ip_bnum; | |
608 idx = ip->ip_index + 1; /* go to next index */ | |
609 page_count = 1; | |
610 } | |
6817 | 611 if (hp != NULL) |
612 mf_put(mfp, hp, FALSE, FALSE); /* release previous block */ | |
2657 | 613 |
614 if (error > 0) | |
615 EMSG(_("E843: Error while updating swap file crypt")); | |
2267 | 616 } |
617 | |
618 mfp->mf_old_key = NULL; | |
619 } | |
620 #endif | |
621 | |
7 | 622 /* |
623 * ml_setname() is called when the file name of "buf" has been changed. | |
624 * It may rename the swap file. | |
625 */ | |
626 void | |
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627 ml_setname(buf_T *buf) |
7 | 628 { |
629 int success = FALSE; | |
630 memfile_T *mfp; | |
631 char_u *fname; | |
632 char_u *dirp; | |
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633 #if defined(MSWIN) |
7 | 634 char_u *p; |
635 #endif | |
636 | |
637 mfp = buf->b_ml.ml_mfp; | |
638 if (mfp->mf_fd < 0) /* there is no swap file yet */ | |
639 { | |
640 /* | |
641 * When 'updatecount' is 0 and 'noswapfile' there is no swap file. | |
642 * For help files we will make a swap file now. | |
643 */ | |
5737 | 644 if (p_uc != 0 && !cmdmod.noswapfile) |
7 | 645 ml_open_file(buf); /* create a swap file */ |
646 return; | |
647 } | |
648 | |
649 /* | |
650 * Try all directories in the 'directory' option. | |
651 */ | |
652 dirp = p_dir; | |
653 for (;;) | |
654 { | |
655 if (*dirp == NUL) /* tried all directories, fail */ | |
656 break; | |
43 | 657 fname = findswapname(buf, &dirp, mfp->mf_fname); |
658 /* alloc's fname */ | |
3158 | 659 if (dirp == NULL) /* out of memory */ |
660 break; | |
7 | 661 if (fname == NULL) /* no file name found for this dir */ |
662 continue; | |
663 | |
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664 #if defined(MSWIN) |
7 | 665 /* |
666 * Set full pathname for swap file now, because a ":!cd dir" may | |
667 * change directory without us knowing it. | |
668 */ | |
669 p = FullName_save(fname, FALSE); | |
670 vim_free(fname); | |
671 fname = p; | |
672 if (fname == NULL) | |
673 continue; | |
674 #endif | |
675 /* if the file name is the same we don't have to do anything */ | |
676 if (fnamecmp(fname, mfp->mf_fname) == 0) | |
677 { | |
678 vim_free(fname); | |
679 success = TRUE; | |
680 break; | |
681 } | |
682 /* need to close the swap file before renaming */ | |
683 if (mfp->mf_fd >= 0) | |
684 { | |
685 close(mfp->mf_fd); | |
686 mfp->mf_fd = -1; | |
687 } | |
688 | |
689 /* try to rename the swap file */ | |
690 if (vim_rename(mfp->mf_fname, fname) == 0) | |
691 { | |
692 success = TRUE; | |
693 vim_free(mfp->mf_fname); | |
694 mfp->mf_fname = fname; | |
695 vim_free(mfp->mf_ffname); | |
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696 #if defined(MSWIN) |
7 | 697 mfp->mf_ffname = NULL; /* mf_fname is full pathname already */ |
698 #else | |
699 mf_set_ffname(mfp); | |
700 #endif | |
2267 | 701 ml_upd_block0(buf, UB_SAME_DIR); |
7 | 702 break; |
703 } | |
704 vim_free(fname); /* this fname didn't work, try another */ | |
705 } | |
706 | |
707 if (mfp->mf_fd == -1) /* need to (re)open the swap file */ | |
708 { | |
709 mfp->mf_fd = mch_open((char *)mfp->mf_fname, O_RDWR | O_EXTRA, 0); | |
710 if (mfp->mf_fd < 0) | |
711 { | |
712 /* could not (re)open the swap file, what can we do???? */ | |
713 EMSG(_("E301: Oops, lost the swap file!!!")); | |
714 return; | |
715 } | |
2003 | 716 #ifdef HAVE_FD_CLOEXEC |
717 { | |
718 int fdflags = fcntl(mfp->mf_fd, F_GETFD); | |
719 if (fdflags >= 0 && (fdflags & FD_CLOEXEC) == 0) | |
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720 (void)fcntl(mfp->mf_fd, F_SETFD, fdflags | FD_CLOEXEC); |
2003 | 721 } |
722 #endif | |
7 | 723 } |
724 if (!success) | |
725 EMSG(_("E302: Could not rename swap file")); | |
726 } | |
727 | |
728 /* | |
729 * Open a file for the memfile for all buffers that are not readonly or have | |
730 * been modified. | |
731 * Used when 'updatecount' changes from zero to non-zero. | |
732 */ | |
733 void | |
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734 ml_open_files(void) |
7 | 735 { |
736 buf_T *buf; | |
737 | |
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738 FOR_ALL_BUFFERS(buf) |
7 | 739 if (!buf->b_p_ro || buf->b_changed) |
740 ml_open_file(buf); | |
741 } | |
742 | |
743 /* | |
744 * Open a swap file for an existing memfile, if there is no swap file yet. | |
745 * If we are unable to find a file name, mf_fname will be NULL | |
746 * and the memfile will be in memory only (no recovery possible). | |
747 */ | |
748 void | |
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749 ml_open_file(buf_T *buf) |
7 | 750 { |
751 memfile_T *mfp; | |
752 char_u *fname; | |
753 char_u *dirp; | |
754 | |
755 mfp = buf->b_ml.ml_mfp; | |
5737 | 756 if (mfp == NULL || mfp->mf_fd >= 0 || !buf->b_p_swf || cmdmod.noswapfile) |
7 | 757 return; /* nothing to do */ |
758 | |
748 | 759 #ifdef FEAT_SPELL |
625 | 760 /* For a spell buffer use a temp file name. */ |
761 if (buf->b_spell) | |
762 { | |
6721 | 763 fname = vim_tempname('s', FALSE); |
625 | 764 if (fname != NULL) |
765 (void)mf_open_file(mfp, fname); /* consumes fname! */ | |
766 buf->b_may_swap = FALSE; | |
767 return; | |
768 } | |
769 #endif | |
770 | |
7 | 771 /* |
772 * Try all directories in 'directory' option. | |
773 */ | |
774 dirp = p_dir; | |
775 for (;;) | |
776 { | |
777 if (*dirp == NUL) | |
778 break; | |
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779 /* There is a small chance that between choosing the swap file name |
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780 * and creating it, another Vim creates the file. In that case the |
7 | 781 * creation will fail and we will use another directory. */ |
43 | 782 fname = findswapname(buf, &dirp, NULL); /* allocates fname */ |
3158 | 783 if (dirp == NULL) |
784 break; /* out of memory */ | |
7 | 785 if (fname == NULL) |
786 continue; | |
787 if (mf_open_file(mfp, fname) == OK) /* consumes fname! */ | |
788 { | |
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789 #if defined(MSWIN) |
7 | 790 /* |
791 * set full pathname for swap file now, because a ":!cd dir" may | |
792 * change directory without us knowing it. | |
793 */ | |
794 mf_fullname(mfp); | |
795 #endif | |
2267 | 796 ml_upd_block0(buf, UB_SAME_DIR); |
39 | 797 |
7 | 798 /* Flush block zero, so others can read it */ |
799 if (mf_sync(mfp, MFS_ZERO) == OK) | |
630 | 800 { |
801 /* Mark all blocks that should be in the swapfile as dirty. | |
802 * Needed for when the 'swapfile' option was reset, so that | |
803 * the swap file was deleted, and then on again. */ | |
804 mf_set_dirty(mfp); | |
7 | 805 break; |
630 | 806 } |
7 | 807 /* Writing block 0 failed: close the file and try another dir */ |
808 mf_close_file(buf, FALSE); | |
809 } | |
810 } | |
811 | |
812 if (mfp->mf_fname == NULL) /* Failed! */ | |
813 { | |
814 need_wait_return = TRUE; /* call wait_return later */ | |
815 ++no_wait_return; | |
816 (void)EMSG2(_("E303: Unable to open swap file for \"%s\", recovery impossible"), | |
3839 | 817 buf_spname(buf) != NULL ? buf_spname(buf) : buf->b_fname); |
7 | 818 --no_wait_return; |
819 } | |
820 | |
821 /* don't try to open a swap file again */ | |
822 buf->b_may_swap = FALSE; | |
823 } | |
824 | |
825 /* | |
826 * If still need to create a swap file, and starting to edit a not-readonly | |
827 * file, or reading into an existing buffer, create a swap file now. | |
828 */ | |
829 void | |
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830 check_need_swap( |
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831 int newfile) // reading file into new buffer |
7 | 832 { |
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833 int old_msg_silent = msg_silent; // might be reset by an E325 message |
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834 |
7 | 835 if (curbuf->b_may_swap && (!curbuf->b_p_ro || !newfile)) |
836 ml_open_file(curbuf); | |
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837 msg_silent = old_msg_silent; |
7 | 838 } |
839 | |
840 /* | |
841 * Close memline for buffer 'buf'. | |
842 * If 'del_file' is TRUE, delete the swap file | |
843 */ | |
844 void | |
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845 ml_close(buf_T *buf, int del_file) |
7 | 846 { |
847 if (buf->b_ml.ml_mfp == NULL) /* not open */ | |
848 return; | |
849 mf_close(buf->b_ml.ml_mfp, del_file); /* close the .swp file */ | |
850 if (buf->b_ml.ml_line_lnum != 0 && (buf->b_ml.ml_flags & ML_LINE_DIRTY)) | |
851 vim_free(buf->b_ml.ml_line_ptr); | |
852 vim_free(buf->b_ml.ml_stack); | |
853 #ifdef FEAT_BYTEOFF | |
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854 VIM_CLEAR(buf->b_ml.ml_chunksize); |
7 | 855 #endif |
856 buf->b_ml.ml_mfp = NULL; | |
857 | |
858 /* Reset the "recovered" flag, give the ATTENTION prompt the next time | |
859 * this buffer is loaded. */ | |
860 buf->b_flags &= ~BF_RECOVERED; | |
861 } | |
862 | |
863 /* | |
864 * Close all existing memlines and memfiles. | |
865 * Only used when exiting. | |
866 * When 'del_file' is TRUE, delete the memfiles. | |
165 | 867 * But don't delete files that were ":preserve"d when we are POSIX compatible. |
7 | 868 */ |
869 void | |
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870 ml_close_all(int del_file) |
7 | 871 { |
872 buf_T *buf; | |
873 | |
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874 FOR_ALL_BUFFERS(buf) |
165 | 875 ml_close(buf, del_file && ((buf->b_flags & BF_PRESERVED) == 0 |
876 || vim_strchr(p_cpo, CPO_PRESERVE) == NULL)); | |
5519 | 877 #ifdef FEAT_SPELL |
878 spell_delete_wordlist(); /* delete the internal wordlist */ | |
879 #endif | |
7 | 880 #ifdef TEMPDIRNAMES |
5519 | 881 vim_deltempdir(); /* delete created temp directory */ |
7 | 882 #endif |
883 } | |
884 | |
885 /* | |
886 * Close all memfiles for not modified buffers. | |
887 * Only use just before exiting! | |
888 */ | |
889 void | |
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890 ml_close_notmod(void) |
7 | 891 { |
892 buf_T *buf; | |
893 | |
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894 FOR_ALL_BUFFERS(buf) |
7 | 895 if (!bufIsChanged(buf)) |
896 ml_close(buf, TRUE); /* close all not-modified buffers */ | |
897 } | |
898 | |
899 /* | |
900 * Update the timestamp in the .swp file. | |
901 * Used when the file has been written. | |
902 */ | |
903 void | |
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904 ml_timestamp(buf_T *buf) |
7 | 905 { |
2267 | 906 ml_upd_block0(buf, UB_FNAME); |
907 } | |
908 | |
909 /* | |
910 * Return FAIL when the ID of "b0p" is wrong. | |
911 */ | |
912 static int | |
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913 ml_check_b0_id(ZERO_BL *b0p) |
2267 | 914 { |
915 if (b0p->b0_id[0] != BLOCK0_ID0 | |
916 || (b0p->b0_id[1] != BLOCK0_ID1 | |
917 && b0p->b0_id[1] != BLOCK0_ID1_C0 | |
6122 | 918 && b0p->b0_id[1] != BLOCK0_ID1_C1 |
919 && b0p->b0_id[1] != BLOCK0_ID1_C2) | |
2267 | 920 ) |
921 return FAIL; | |
922 return OK; | |
39 | 923 } |
924 | |
925 /* | |
926 * Update the timestamp or the B0_SAME_DIR flag of the .swp file. | |
927 */ | |
928 static void | |
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929 ml_upd_block0(buf_T *buf, upd_block0_T what) |
39 | 930 { |
7 | 931 memfile_T *mfp; |
932 bhdr_T *hp; | |
933 ZERO_BL *b0p; | |
934 | |
935 mfp = buf->b_ml.ml_mfp; | |
6130 | 936 if (mfp == NULL) |
7 | 937 return; |
6130 | 938 hp = mf_get(mfp, (blocknr_T)0, 1); |
939 if (hp == NULL) | |
940 { | |
941 #ifdef FEAT_CRYPT | |
942 /* Possibly update the seed in the memfile before there is a block0. */ | |
943 if (what == UB_CRYPT) | |
944 ml_set_mfp_crypt(buf); | |
945 #endif | |
946 return; | |
947 } | |
948 | |
7 | 949 b0p = (ZERO_BL *)(hp->bh_data); |
2267 | 950 if (ml_check_b0_id(b0p) == FAIL) |
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951 IEMSG(_("E304: ml_upd_block0(): Didn't get block 0??")); |
7 | 952 else |
39 | 953 { |
2267 | 954 if (what == UB_FNAME) |
39 | 955 set_b0_fname(b0p, buf); |
2267 | 956 #ifdef FEAT_CRYPT |
957 else if (what == UB_CRYPT) | |
958 ml_set_b0_crypt(buf, b0p); | |
959 #endif | |
960 else /* what == UB_SAME_DIR */ | |
39 | 961 set_b0_dir_flag(b0p, buf); |
962 } | |
7 | 963 mf_put(mfp, hp, TRUE, FALSE); |
964 } | |
965 | |
966 /* | |
967 * Write file name and timestamp into block 0 of a swap file. | |
968 * Also set buf->b_mtime. | |
969 * Don't use NameBuff[]!!! | |
970 */ | |
971 static void | |
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972 set_b0_fname(ZERO_BL *b0p, buf_T *buf) |
7 | 973 { |
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974 stat_T st; |
7 | 975 |
976 if (buf->b_ffname == NULL) | |
977 b0p->b0_fname[0] = NUL; | |
978 else | |
979 { | |
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980 #if defined(MSWIN) || defined(AMIGA) |
39 | 981 /* Systems that cannot translate "~user" back into a path: copy the |
982 * file name unmodified. Do use slashes instead of backslashes for | |
983 * portability. */ | |
2267 | 984 vim_strncpy(b0p->b0_fname, buf->b_ffname, B0_FNAME_SIZE_CRYPT - 1); |
39 | 985 # ifdef BACKSLASH_IN_FILENAME |
986 forward_slash(b0p->b0_fname); | |
987 # endif | |
7 | 988 #else |
989 size_t flen, ulen; | |
990 char_u uname[B0_UNAME_SIZE]; | |
991 | |
992 /* | |
993 * For a file under the home directory of the current user, we try to | |
994 * replace the home directory path with "~user". This helps when | |
995 * editing the same file on different machines over a network. | |
996 * First replace home dir path with "~/" with home_replace(). | |
997 * Then insert the user name to get "~user/". | |
998 */ | |
2267 | 999 home_replace(NULL, buf->b_ffname, b0p->b0_fname, |
1000 B0_FNAME_SIZE_CRYPT, TRUE); | |
7 | 1001 if (b0p->b0_fname[0] == '~') |
1002 { | |
1003 flen = STRLEN(b0p->b0_fname); | |
1004 /* If there is no user name or it is too long, don't use "~/" */ | |
1005 if (get_user_name(uname, B0_UNAME_SIZE) == FAIL | |
2267 | 1006 || (ulen = STRLEN(uname)) + flen > B0_FNAME_SIZE_CRYPT - 1) |
1007 vim_strncpy(b0p->b0_fname, buf->b_ffname, | |
1008 B0_FNAME_SIZE_CRYPT - 1); | |
7 | 1009 else |
1010 { | |
1011 mch_memmove(b0p->b0_fname + ulen + 1, b0p->b0_fname + 1, flen); | |
1012 mch_memmove(b0p->b0_fname + 1, uname, ulen); | |
1013 } | |
1014 } | |
1015 #endif | |
1016 if (mch_stat((char *)buf->b_ffname, &st) >= 0) | |
1017 { | |
1018 long_to_char((long)st.st_mtime, b0p->b0_mtime); | |
1019 #ifdef CHECK_INODE | |
1020 long_to_char((long)st.st_ino, b0p->b0_ino); | |
1021 #endif | |
1022 buf_store_time(buf, &st, buf->b_ffname); | |
1023 buf->b_mtime_read = buf->b_mtime; | |
1024 } | |
1025 else | |
1026 { | |
1027 long_to_char(0L, b0p->b0_mtime); | |
1028 #ifdef CHECK_INODE | |
1029 long_to_char(0L, b0p->b0_ino); | |
1030 #endif | |
1031 buf->b_mtime = 0; | |
1032 buf->b_mtime_read = 0; | |
1033 buf->b_orig_size = 0; | |
1034 buf->b_orig_mode = 0; | |
1035 } | |
1036 } | |
39 | 1037 |
1038 #ifdef FEAT_MBYTE | |
1039 /* Also add the 'fileencoding' if there is room. */ | |
1040 add_b0_fenc(b0p, curbuf); | |
1041 #endif | |
7 | 1042 } |
1043 | |
1044 /* | |
39 | 1045 * Update the B0_SAME_DIR flag of the swap file. It's set if the file and the |
1046 * swapfile for "buf" are in the same directory. | |
1047 * This is fail safe: if we are not sure the directories are equal the flag is | |
1048 * not set. | |
1049 */ | |
1050 static void | |
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1051 set_b0_dir_flag(ZERO_BL *b0p, buf_T *buf) |
39 | 1052 { |
1053 if (same_directory(buf->b_ml.ml_mfp->mf_fname, buf->b_ffname)) | |
1054 b0p->b0_flags |= B0_SAME_DIR; | |
1055 else | |
1056 b0p->b0_flags &= ~B0_SAME_DIR; | |
1057 } | |
1058 | |
1059 #ifdef FEAT_MBYTE | |
1060 /* | |
1061 * When there is room, add the 'fileencoding' to block zero. | |
1062 */ | |
1063 static void | |
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1064 add_b0_fenc( |
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1065 ZERO_BL *b0p, |
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1066 buf_T *buf) |
39 | 1067 { |
1068 int n; | |
2267 | 1069 int size = B0_FNAME_SIZE_NOCRYPT; |
1070 | |
1071 # ifdef FEAT_CRYPT | |
1072 /* Without encryption use the same offset as in Vim 7.2 to be compatible. | |
1073 * With encryption it's OK to move elsewhere, the swap file is not | |
1074 * compatible anyway. */ | |
1075 if (*buf->b_p_key != NUL) | |
1076 size = B0_FNAME_SIZE_CRYPT; | |
1077 # endif | |
39 | 1078 |
835 | 1079 n = (int)STRLEN(buf->b_p_fenc); |
2267 | 1080 if ((int)STRLEN(b0p->b0_fname) + n + 1 > size) |
39 | 1081 b0p->b0_flags &= ~B0_HAS_FENC; |
1082 else | |
1083 { | |
2267 | 1084 mch_memmove((char *)b0p->b0_fname + size - n, |
39 | 1085 (char *)buf->b_p_fenc, (size_t)n); |
2267 | 1086 *(b0p->b0_fname + size - n - 1) = NUL; |
39 | 1087 b0p->b0_flags |= B0_HAS_FENC; |
1088 } | |
1089 } | |
1090 #endif | |
1091 | |
1092 | |
1093 /* | |
2267 | 1094 * Try to recover curbuf from the .swp file. |
7 | 1095 */ |
1096 void | |
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1097 ml_recover(void) |
7 | 1098 { |
1099 buf_T *buf = NULL; | |
1100 memfile_T *mfp = NULL; | |
1101 char_u *fname; | |
2267 | 1102 char_u *fname_used = NULL; |
7 | 1103 bhdr_T *hp = NULL; |
1104 ZERO_BL *b0p; | |
39 | 1105 int b0_ff; |
1106 char_u *b0_fenc = NULL; | |
2267 | 1107 #ifdef FEAT_CRYPT |
1108 int b0_cm = -1; | |
1109 #endif | |
7 | 1110 PTR_BL *pp; |
1111 DATA_BL *dp; | |
1112 infoptr_T *ip; | |
1113 blocknr_T bnum; | |
1114 int page_count; | |
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1115 stat_T org_stat, swp_stat; |
7 | 1116 int len; |
1117 int directly; | |
1118 linenr_T lnum; | |
1119 char_u *p; | |
1120 int i; | |
1121 long error; | |
1122 int cannot_open; | |
1123 linenr_T line_count; | |
1124 int has_error; | |
1125 int idx; | |
1126 int top; | |
1127 int txt_start; | |
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1128 off_T size; |
7 | 1129 int called_from_main; |
1130 int serious_error = TRUE; | |
1131 long mtime; | |
1132 int attr; | |
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1133 int orig_file_status = NOTDONE; |
7 | 1134 |
1135 recoverymode = TRUE; | |
1136 called_from_main = (curbuf->b_ml.ml_mfp == NULL); | |
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1137 attr = HL_ATTR(HLF_E); |
1975 | 1138 |
1139 /* | |
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1140 * If the file name ends in ".s[a-w][a-z]" we assume this is the swap file. |
1975 | 1141 * Otherwise a search is done to find the swap file(s). |
1142 */ | |
7 | 1143 fname = curbuf->b_fname; |
1144 if (fname == NULL) /* When there is no file name */ | |
1145 fname = (char_u *)""; | |
1146 len = (int)STRLEN(fname); | |
1147 if (len >= 4 && | |
2823 | 1148 #if defined(VMS) |
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1149 STRNICMP(fname + len - 4, "_s", 2) |
7 | 1150 #else |
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1151 STRNICMP(fname + len - 4, ".s", 2) |
7 | 1152 #endif |
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1153 == 0 |
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1155 TOLOWER_ASC(fname[len - 2])) != NULL |
1975 | 1156 && ASCII_ISALPHA(fname[len - 1])) |
7 | 1157 { |
1158 directly = TRUE; | |
2267 | 1159 fname_used = vim_strsave(fname); /* make a copy for mf_open() */ |
7 | 1160 } |
1161 else | |
1162 { | |
1163 directly = FALSE; | |
1164 | |
1165 /* count the number of matching swap files */ | |
2267 | 1166 len = recover_names(fname, FALSE, 0, NULL); |
7 | 1167 if (len == 0) /* no swap files found */ |
1168 { | |
1169 EMSG2(_("E305: No swap file found for %s"), fname); | |
1170 goto theend; | |
1171 } | |
1172 if (len == 1) /* one swap file found, use it */ | |
1173 i = 1; | |
1174 else /* several swap files found, choose */ | |
1175 { | |
1176 /* list the names of the swap files */ | |
2267 | 1177 (void)recover_names(fname, TRUE, 0, NULL); |
7 | 1178 msg_putchar('\n'); |
1179 MSG_PUTS(_("Enter number of swap file to use (0 to quit): ")); | |
374 | 1180 i = get_number(FALSE, NULL); |
7 | 1181 if (i < 1 || i > len) |
1182 goto theend; | |
1183 } | |
1184 /* get the swap file name that will be used */ | |
2267 | 1185 (void)recover_names(fname, FALSE, i, &fname_used); |
7 | 1186 } |
2267 | 1187 if (fname_used == NULL) |
7 | 1188 goto theend; /* out of memory */ |
1189 | |
1190 /* When called from main() still need to initialize storage structure */ | |
625 | 1191 if (called_from_main && ml_open(curbuf) == FAIL) |
7 | 1192 getout(1); |
1193 | |
2267 | 1194 /* |
1195 * Allocate a buffer structure for the swap file that is used for recovery. | |
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|
1196 * Only the memline and crypt information in it are really used. |
2267 | 1197 */ |
7 | 1198 buf = (buf_T *)alloc((unsigned)sizeof(buf_T)); |
1199 if (buf == NULL) | |
1200 goto theend; | |
2267 | 1201 |
1202 /* | |
1203 * init fields in memline struct | |
1204 */ | |
7 | 1205 buf->b_ml.ml_stack_size = 0; /* no stack yet */ |
1206 buf->b_ml.ml_stack = NULL; /* no stack yet */ | |
1207 buf->b_ml.ml_stack_top = 0; /* nothing in the stack */ | |
1208 buf->b_ml.ml_line_lnum = 0; /* no cached line */ | |
1209 buf->b_ml.ml_locked = NULL; /* no locked block */ | |
1210 buf->b_ml.ml_flags = 0; | |
2408
9e2e63af1641
Better fix for memory access in recovery. (Dominique Pelle)
Bram Moolenaar <bram@vim.org>
parents:
2407
diff
changeset
|
1211 #ifdef FEAT_CRYPT |
9e2e63af1641
Better fix for memory access in recovery. (Dominique Pelle)
Bram Moolenaar <bram@vim.org>
parents:
2407
diff
changeset
|
1212 buf->b_p_key = empty_option; |
9e2e63af1641
Better fix for memory access in recovery. (Dominique Pelle)
Bram Moolenaar <bram@vim.org>
parents:
2407
diff
changeset
|
1213 buf->b_p_cm = empty_option; |
9e2e63af1641
Better fix for memory access in recovery. (Dominique Pelle)
Bram Moolenaar <bram@vim.org>
parents:
2407
diff
changeset
|
1214 #endif |
7 | 1215 |
2267 | 1216 /* |
1217 * open the memfile from the old swap file | |
1218 */ | |
1219 p = vim_strsave(fname_used); /* save "fname_used" for the message: | |
1220 mf_open() will consume "fname_used"! */ | |
1221 mfp = mf_open(fname_used, O_RDONLY); | |
1222 fname_used = p; | |
7 | 1223 if (mfp == NULL || mfp->mf_fd < 0) |
1224 { | |
2267 | 1225 if (fname_used != NULL) |
1226 EMSG2(_("E306: Cannot open %s"), fname_used); | |
7 | 1227 goto theend; |
1228 } | |
1229 buf->b_ml.ml_mfp = mfp; | |
2267 | 1230 #ifdef FEAT_CRYPT |
1231 mfp->mf_buffer = buf; | |
1232 #endif | |
7 | 1233 |
1234 /* | |
1235 * The page size set in mf_open() might be different from the page size | |
1236 * used in the swap file, we must get it from block 0. But to read block | |
1237 * 0 we need a page size. Use the minimal size for block 0 here, it will | |
1238 * be set to the real value below. | |
1239 */ | |
1240 mfp->mf_page_size = MIN_SWAP_PAGE_SIZE; | |
1241 | |
2267 | 1242 /* |
1243 * try to read block 0 | |
1244 */ | |
7 | 1245 if ((hp = mf_get(mfp, (blocknr_T)0, 1)) == NULL) |
1246 { | |
1247 msg_start(); | |
1248 MSG_PUTS_ATTR(_("Unable to read block 0 from "), attr | MSG_HIST); | |
1249 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST); | |
2267 | 1250 MSG_PUTS_ATTR(_("\nMaybe no changes were made or Vim did not update the swap file."), |
7 | 1251 attr | MSG_HIST); |
1252 msg_end(); | |
1253 goto theend; | |
1254 } | |
1255 b0p = (ZERO_BL *)(hp->bh_data); | |
1256 if (STRNCMP(b0p->b0_version, "VIM 3.0", 7) == 0) | |
1257 { | |
1258 msg_start(); | |
1259 msg_outtrans_attr(mfp->mf_fname, MSG_HIST); | |
1260 MSG_PUTS_ATTR(_(" cannot be used with this version of Vim.\n"), | |
1261 MSG_HIST); | |
1262 MSG_PUTS_ATTR(_("Use Vim version 3.0.\n"), MSG_HIST); | |
1263 msg_end(); | |
1264 goto theend; | |
1265 } | |
2267 | 1266 if (ml_check_b0_id(b0p) == FAIL) |
7 | 1267 { |
1268 EMSG2(_("E307: %s does not look like a Vim swap file"), mfp->mf_fname); | |
1269 goto theend; | |
1270 } | |
1271 if (b0_magic_wrong(b0p)) | |
1272 { | |
1273 msg_start(); | |
1274 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST); | |
8212
05b88224cea1
commit https://github.com/vim/vim/commit/48e330aff911be1c798c88a973af6437a8141fce
Christian Brabandt <cb@256bit.org>
parents:
7961
diff
changeset
|
1275 #if defined(MSWIN) |
7 | 1276 if (STRNCMP(b0p->b0_hname, "PC ", 3) == 0) |
1277 MSG_PUTS_ATTR(_(" cannot be used with this version of Vim.\n"), | |
1278 attr | MSG_HIST); | |
1279 else | |
1280 #endif | |
1281 MSG_PUTS_ATTR(_(" cannot be used on this computer.\n"), | |
1282 attr | MSG_HIST); | |
1283 MSG_PUTS_ATTR(_("The file was created on "), attr | MSG_HIST); | |
2273
7f09ce7b4126
Fix a memory leak in encryption. (Dominique Pelle)
Bram Moolenaar <bram@vim.org>
parents:
2272
diff
changeset
|
1284 /* avoid going past the end of a corrupted hostname */ |
7 | 1285 b0p->b0_fname[0] = NUL; |
1286 MSG_PUTS_ATTR(b0p->b0_hname, attr | MSG_HIST); | |
1287 MSG_PUTS_ATTR(_(",\nor the file has been damaged."), attr | MSG_HIST); | |
1288 msg_end(); | |
1289 goto theend; | |
1290 } | |
1105 | 1291 |
2267 | 1292 #ifdef FEAT_CRYPT |
6122 | 1293 for (i = 0; i < (int)(sizeof(id1_codes) / sizeof(int)); ++i) |
1294 if (id1_codes[i] == b0p->b0_id[1]) | |
1295 b0_cm = i; | |
1296 if (b0_cm > 0) | |
2267 | 1297 mch_memmove(mfp->mf_seed, &b0p->b0_seed, MF_SEED_LEN); |
6122 | 1298 crypt_set_cm_option(buf, b0_cm < 0 ? 0 : b0_cm); |
2267 | 1299 #else |
1300 if (b0p->b0_id[1] != BLOCK0_ID1) | |
1301 { | |
2283
7e1bd501306d
Mainly documentation updates.
Bram Moolenaar <bram@vim.org>
parents:
2273
diff
changeset
|
1302 EMSG2(_("E833: %s is encrypted and this version of Vim does not support encryption"), mfp->mf_fname); |
2267 | 1303 goto theend; |
1304 } | |
1305 #endif | |
1306 | |
7 | 1307 /* |
1308 * If we guessed the wrong page size, we have to recalculate the | |
1309 * highest block number in the file. | |
1310 */ | |
1311 if (mfp->mf_page_size != (unsigned)char_to_long(b0p->b0_page_size)) | |
1312 { | |
1105 | 1313 unsigned previous_page_size = mfp->mf_page_size; |
1314 | |
7 | 1315 mf_new_page_size(mfp, (unsigned)char_to_long(b0p->b0_page_size)); |
1105 | 1316 if (mfp->mf_page_size < previous_page_size) |
1317 { | |
1318 msg_start(); | |
1319 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST); | |
1320 MSG_PUTS_ATTR(_(" has been damaged (page size is smaller than minimum value).\n"), | |
1321 attr | MSG_HIST); | |
1322 msg_end(); | |
1323 goto theend; | |
1324 } | |
9387
f094d4085014
commit https://github.com/vim/vim/commit/8767f52fbfd4f053ce00a978227c95f1d7d323fe
Christian Brabandt <cb@256bit.org>
parents:
9295
diff
changeset
|
1325 if ((size = vim_lseek(mfp->mf_fd, (off_T)0L, SEEK_END)) <= 0) |
7 | 1326 mfp->mf_blocknr_max = 0; /* no file or empty file */ |
1327 else | |
1328 mfp->mf_blocknr_max = (blocknr_T)(size / mfp->mf_page_size); | |
1329 mfp->mf_infile_count = mfp->mf_blocknr_max; | |
1105 | 1330 |
1331 /* need to reallocate the memory used to store the data */ | |
1332 p = alloc(mfp->mf_page_size); | |
1333 if (p == NULL) | |
1334 goto theend; | |
1335 mch_memmove(p, hp->bh_data, previous_page_size); | |
1336 vim_free(hp->bh_data); | |
1337 hp->bh_data = p; | |
1338 b0p = (ZERO_BL *)(hp->bh_data); | |
7 | 1339 } |
1340 | |
2267 | 1341 /* |
1342 * If .swp file name given directly, use name from swap file for buffer. | |
1343 */ | |
7 | 1344 if (directly) |
1345 { | |
1346 expand_env(b0p->b0_fname, NameBuff, MAXPATHL); | |
1347 if (setfname(curbuf, NameBuff, NULL, TRUE) == FAIL) | |
1348 goto theend; | |
1349 } | |
1350 | |
1351 home_replace(NULL, mfp->mf_fname, NameBuff, MAXPATHL, TRUE); | |
274 | 1352 smsg((char_u *)_("Using swap file \"%s\""), NameBuff); |
7 | 1353 |
1354 if (buf_spname(curbuf) != NULL) | |
3839 | 1355 vim_strncpy(NameBuff, buf_spname(curbuf), MAXPATHL - 1); |
7 | 1356 else |
1357 home_replace(NULL, curbuf->b_ffname, NameBuff, MAXPATHL, TRUE); | |
274 | 1358 smsg((char_u *)_("Original file \"%s\""), NameBuff); |
7 | 1359 msg_putchar('\n'); |
1360 | |
2267 | 1361 /* |
1362 * check date of swap file and original file | |
1363 */ | |
7 | 1364 mtime = char_to_long(b0p->b0_mtime); |
1365 if (curbuf->b_ffname != NULL | |
1366 && mch_stat((char *)curbuf->b_ffname, &org_stat) != -1 | |
1367 && ((mch_stat((char *)mfp->mf_fname, &swp_stat) != -1 | |
1368 && org_stat.st_mtime > swp_stat.st_mtime) | |
1369 || org_stat.st_mtime != mtime)) | |
1370 { | |
1371 EMSG(_("E308: Warning: Original file may have been changed")); | |
1372 } | |
1373 out_flush(); | |
39 | 1374 |
1375 /* Get the 'fileformat' and 'fileencoding' from block zero. */ | |
1376 b0_ff = (b0p->b0_flags & B0_FF_MASK); | |
1377 if (b0p->b0_flags & B0_HAS_FENC) | |
1378 { | |
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2267
diff
changeset
|
1379 int fnsize = B0_FNAME_SIZE_NOCRYPT; |
2267 | 1380 |
1381 #ifdef FEAT_CRYPT | |
1382 /* Use the same size as in add_b0_fenc(). */ | |
1383 if (b0p->b0_id[1] != BLOCK0_ID1) | |
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2267
diff
changeset
|
1384 fnsize = B0_FNAME_SIZE_CRYPT; |
2267 | 1385 #endif |
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2267
diff
changeset
|
1386 for (p = b0p->b0_fname + fnsize; p > b0p->b0_fname && p[-1] != NUL; --p) |
39 | 1387 ; |
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2267
diff
changeset
|
1388 b0_fenc = vim_strnsave(p, (int)(b0p->b0_fname + fnsize - p)); |
39 | 1389 } |
1390 | |
7 | 1391 mf_put(mfp, hp, FALSE, FALSE); /* release block 0 */ |
1392 hp = NULL; | |
1393 | |
1394 /* | |
1395 * Now that we are sure that the file is going to be recovered, clear the | |
1396 * contents of the current buffer. | |
1397 */ | |
1398 while (!(curbuf->b_ml.ml_flags & ML_EMPTY)) | |
1399 ml_delete((linenr_T)1, FALSE); | |
1400 | |
1401 /* | |
1402 * Try reading the original file to obtain the values of 'fileformat', | |
1403 * 'fileencoding', etc. Ignore errors. The text itself is not used. | |
2267 | 1404 * When the file is encrypted the user is asked to enter the key. |
7 | 1405 */ |
1406 if (curbuf->b_ffname != NULL) | |
2162
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1407 orig_file_status = readfile(curbuf->b_ffname, NULL, (linenr_T)0, |
7 | 1408 (linenr_T)0, (linenr_T)MAXLNUM, NULL, READ_NEW); |
1409 | |
2267 | 1410 #ifdef FEAT_CRYPT |
1411 if (b0_cm >= 0) | |
1412 { | |
1413 /* Need to ask the user for the crypt key. If this fails we continue | |
1414 * without a key, will probably get garbage text. */ | |
1415 if (*curbuf->b_p_key != NUL) | |
1416 { | |
1417 smsg((char_u *)_("Swap file is encrypted: \"%s\""), fname_used); | |
1418 MSG_PUTS(_("\nIf you entered a new crypt key but did not write the text file,")); | |
1419 MSG_PUTS(_("\nenter the new crypt key.")); | |
1420 MSG_PUTS(_("\nIf you wrote the text file after changing the crypt key press enter")); | |
1421 MSG_PUTS(_("\nto use the same key for text file and swap file")); | |
1422 } | |
1423 else | |
1424 smsg((char_u *)_(need_key_msg), fname_used); | |
6122 | 1425 buf->b_p_key = crypt_get_key(FALSE, FALSE); |
2267 | 1426 if (buf->b_p_key == NULL) |
1427 buf->b_p_key = curbuf->b_p_key; | |
1428 else if (*buf->b_p_key == NUL) | |
1429 { | |
1430 vim_free(buf->b_p_key); | |
1431 buf->b_p_key = curbuf->b_p_key; | |
1432 } | |
1433 if (buf->b_p_key == NULL) | |
1434 buf->b_p_key = empty_option; | |
2165
733f0dc510c3
Undo changes that are meant for the Vim 7.3 branch.
Bram Moolenaar <bram@vim.org>
parents:
2162
diff
changeset
|
1435 } |
2267 | 1436 #endif |
7 | 1437 |
39 | 1438 /* Use the 'fileformat' and 'fileencoding' as stored in the swap file. */ |
1439 if (b0_ff != 0) | |
1440 set_fileformat(b0_ff - 1, OPT_LOCAL); | |
1441 if (b0_fenc != NULL) | |
1442 { | |
1443 set_option_value((char_u *)"fenc", 0L, b0_fenc, OPT_LOCAL); | |
1444 vim_free(b0_fenc); | |
1445 } | |
1446 unchanged(curbuf, TRUE); | |
1447 | |
7 | 1448 bnum = 1; /* start with block 1 */ |
1449 page_count = 1; /* which is 1 page */ | |
1450 lnum = 0; /* append after line 0 in curbuf */ | |
1451 line_count = 0; | |
1452 idx = 0; /* start with first index in block 1 */ | |
1453 error = 0; | |
1454 buf->b_ml.ml_stack_top = 0; | |
1455 buf->b_ml.ml_stack = NULL; | |
1456 buf->b_ml.ml_stack_size = 0; /* no stack yet */ | |
1457 | |
1458 if (curbuf->b_ffname == NULL) | |
1459 cannot_open = TRUE; | |
1460 else | |
1461 cannot_open = FALSE; | |
1462 | |
1463 serious_error = FALSE; | |
1464 for ( ; !got_int; line_breakcheck()) | |
1465 { | |
1466 if (hp != NULL) | |
1467 mf_put(mfp, hp, FALSE, FALSE); /* release previous block */ | |
1468 | |
1469 /* | |
1470 * get block | |
1471 */ | |
1472 if ((hp = mf_get(mfp, (blocknr_T)bnum, page_count)) == NULL) | |
1473 { | |
1474 if (bnum == 1) | |
1475 { | |
1476 EMSG2(_("E309: Unable to read block 1 from %s"), mfp->mf_fname); | |
1477 goto theend; | |
1478 } | |
1479 ++error; | |
1480 ml_append(lnum++, (char_u *)_("???MANY LINES MISSING"), | |
1481 (colnr_T)0, TRUE); | |
1482 } | |
1483 else /* there is a block */ | |
1484 { | |
1485 pp = (PTR_BL *)(hp->bh_data); | |
1486 if (pp->pb_id == PTR_ID) /* it is a pointer block */ | |
1487 { | |
1488 /* check line count when using pointer block first time */ | |
1489 if (idx == 0 && line_count != 0) | |
1490 { | |
1491 for (i = 0; i < (int)pp->pb_count; ++i) | |
1492 line_count -= pp->pb_pointer[i].pe_line_count; | |
1493 if (line_count != 0) | |
1494 { | |
1495 ++error; | |
1496 ml_append(lnum++, (char_u *)_("???LINE COUNT WRONG"), | |
1497 (colnr_T)0, TRUE); | |
1498 } | |
1499 } | |
1500 | |
1501 if (pp->pb_count == 0) | |
1502 { | |
1503 ml_append(lnum++, (char_u *)_("???EMPTY BLOCK"), | |
1504 (colnr_T)0, TRUE); | |
1505 ++error; | |
1506 } | |
1507 else if (idx < (int)pp->pb_count) /* go a block deeper */ | |
1508 { | |
1509 if (pp->pb_pointer[idx].pe_bnum < 0) | |
1510 { | |
1511 /* | |
1512 * Data block with negative block number. | |
1513 * Try to read lines from the original file. | |
1514 * This is slow, but it works. | |
1515 */ | |
1516 if (!cannot_open) | |
1517 { | |
1518 line_count = pp->pb_pointer[idx].pe_line_count; | |
1519 if (readfile(curbuf->b_ffname, NULL, lnum, | |
1520 pp->pb_pointer[idx].pe_old_lnum - 1, | |
10575
01a5f64a7a20
patch 8.0.0177: BufEnter autocommand not fired for a directory
Christian Brabandt <cb@256bit.org>
parents:
10359
diff
changeset
|
1521 line_count, NULL, 0) != OK) |
7 | 1522 cannot_open = TRUE; |
1523 else | |
1524 lnum += line_count; | |
1525 } | |
1526 if (cannot_open) | |
1527 { | |
1528 ++error; | |
1529 ml_append(lnum++, (char_u *)_("???LINES MISSING"), | |
1530 (colnr_T)0, TRUE); | |
1531 } | |
1532 ++idx; /* get same block again for next index */ | |
1533 continue; | |
1534 } | |
1535 | |
1536 /* | |
1537 * going one block deeper in the tree | |
1538 */ | |
1539 if ((top = ml_add_stack(buf)) < 0) /* new entry in stack */ | |
1540 { | |
1541 ++error; | |
1542 break; /* out of memory */ | |
1543 } | |
1544 ip = &(buf->b_ml.ml_stack[top]); | |
1545 ip->ip_bnum = bnum; | |
1546 ip->ip_index = idx; | |
1547 | |
1548 bnum = pp->pb_pointer[idx].pe_bnum; | |
1549 line_count = pp->pb_pointer[idx].pe_line_count; | |
1550 page_count = pp->pb_pointer[idx].pe_page_count; | |
2885 | 1551 idx = 0; |
7 | 1552 continue; |
1553 } | |
1554 } | |
1555 else /* not a pointer block */ | |
1556 { | |
1557 dp = (DATA_BL *)(hp->bh_data); | |
1558 if (dp->db_id != DATA_ID) /* block id wrong */ | |
1559 { | |
1560 if (bnum == 1) | |
1561 { | |
1562 EMSG2(_("E310: Block 1 ID wrong (%s not a .swp file?)"), | |
1563 mfp->mf_fname); | |
1564 goto theend; | |
1565 } | |
1566 ++error; | |
1567 ml_append(lnum++, (char_u *)_("???BLOCK MISSING"), | |
1568 (colnr_T)0, TRUE); | |
1569 } | |
1570 else | |
1571 { | |
1572 /* | |
1573 * it is a data block | |
1574 * Append all the lines in this block | |
1575 */ | |
1576 has_error = FALSE; | |
1577 /* | |
1578 * check length of block | |
1579 * if wrong, use length in pointer block | |
1580 */ | |
1581 if (page_count * mfp->mf_page_size != dp->db_txt_end) | |
1582 { | |
1583 ml_append(lnum++, (char_u *)_("??? from here until ???END lines may be messed up"), | |
1584 (colnr_T)0, TRUE); | |
1585 ++error; | |
1586 has_error = TRUE; | |
1587 dp->db_txt_end = page_count * mfp->mf_page_size; | |
1588 } | |
1589 | |
1590 /* make sure there is a NUL at the end of the block */ | |
1591 *((char_u *)dp + dp->db_txt_end - 1) = NUL; | |
1592 | |
1593 /* | |
1594 * check number of lines in block | |
1595 * if wrong, use count in data block | |
1596 */ | |
1597 if (line_count != dp->db_line_count) | |
1598 { | |
1599 ml_append(lnum++, (char_u *)_("??? from here until ???END lines may have been inserted/deleted"), | |
1600 (colnr_T)0, TRUE); | |
1601 ++error; | |
1602 has_error = TRUE; | |
1603 } | |
1604 | |
1605 for (i = 0; i < dp->db_line_count; ++i) | |
1606 { | |
1607 txt_start = (dp->db_index[i] & DB_INDEX_MASK); | |
1978 | 1608 if (txt_start <= (int)HEADER_SIZE |
7 | 1609 || txt_start >= (int)dp->db_txt_end) |
1610 { | |
1611 p = (char_u *)"???"; | |
1612 ++error; | |
1613 } | |
1614 else | |
1615 p = (char_u *)dp + txt_start; | |
1616 ml_append(lnum++, p, (colnr_T)0, TRUE); | |
1617 } | |
1618 if (has_error) | |
1978 | 1619 ml_append(lnum++, (char_u *)_("???END"), |
1620 (colnr_T)0, TRUE); | |
7 | 1621 } |
1622 } | |
1623 } | |
1624 | |
1625 if (buf->b_ml.ml_stack_top == 0) /* finished */ | |
1626 break; | |
1627 | |
1628 /* | |
1629 * go one block up in the tree | |
1630 */ | |
1631 ip = &(buf->b_ml.ml_stack[--(buf->b_ml.ml_stack_top)]); | |
1632 bnum = ip->ip_bnum; | |
1633 idx = ip->ip_index + 1; /* go to next index */ | |
1634 page_count = 1; | |
1635 } | |
1636 | |
1637 /* | |
2162
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1638 * Compare the buffer contents with the original file. When they differ |
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1639 * set the 'modified' flag. |
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1640 * Lines 1 - lnum are the new contents. |
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1641 * 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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diff
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|
1642 * Line ml_line_count + 1 in the dummy empty line. |
7 | 1643 */ |
2162
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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diff
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|
1644 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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diff
changeset
|
1645 { |
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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diff
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|
1646 /* 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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|
1647 * empty. Don't set the modified flag then. */ |
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After recovery check if the text changed. If it did mark the buffer as
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1648 if (!(curbuf->b_ml.ml_line_count == 2 && *ml_get(1) == NUL)) |
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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diff
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|
1649 { |
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After recovery check if the text changed. If it did mark the buffer as
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|
1650 changed_int(); |
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|
1651 ++CHANGEDTICK(curbuf); |
2162
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After recovery check if the text changed. If it did mark the buffer as
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|
1652 } |
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After recovery check if the text changed. If it did mark the buffer as
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|
1653 } |
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After recovery check if the text changed. If it did mark the buffer as
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|
1654 else |
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After recovery check if the text changed. If it did mark the buffer as
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|
1655 { |
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After recovery check if the text changed. If it did mark the buffer as
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|
1656 for (idx = 1; idx <= lnum; ++idx) |
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After recovery check if the text changed. If it did mark the buffer as
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|
1657 { |
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After recovery check if the text changed. If it did mark the buffer as
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|
1658 /* Need to copy one line, fetching the other one may flush it. */ |
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After recovery check if the text changed. If it did mark the buffer as
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|
1659 p = vim_strsave(ml_get(idx)); |
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|
1660 i = STRCMP(p, ml_get(idx + lnum)); |
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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|
1661 vim_free(p); |
0527eb0f6918
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|
1662 if (i != 0) |
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|
1663 { |
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|
1664 changed_int(); |
10952
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|
1665 ++CHANGEDTICK(curbuf); |
2162
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|
1666 break; |
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|
1667 } |
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|
1668 } |
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|
1669 } |
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|
1670 |
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|
1671 /* |
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|
1672 * Delete the lines from the original file and the dummy line from the |
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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|
1673 * empty buffer. These will now be after the last line in the buffer. |
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|
1674 */ |
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1675 while (curbuf->b_ml.ml_line_count > lnum |
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|
1676 && !(curbuf->b_ml.ml_flags & ML_EMPTY)) |
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1677 ml_delete(curbuf->b_ml.ml_line_count, FALSE); |
7 | 1678 curbuf->b_flags |= BF_RECOVERED; |
1679 | |
1680 recoverymode = FALSE; | |
1681 if (got_int) | |
1682 EMSG(_("E311: Recovery Interrupted")); | |
1683 else if (error) | |
1684 { | |
1685 ++no_wait_return; | |
1686 MSG(">>>>>>>>>>>>>"); | |
1687 EMSG(_("E312: Errors detected while recovering; look for lines starting with ???")); | |
1688 --no_wait_return; | |
1689 MSG(_("See \":help E312\" for more information.")); | |
1690 MSG(">>>>>>>>>>>>>"); | |
1691 } | |
1692 else | |
1693 { | |
2162
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1694 if (curbuf->b_changed) |
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|
1695 { |
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|
1696 MSG(_("Recovery completed. You should check if everything is OK.")); |
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1697 MSG_PUTS(_("\n(You might want to write out this file under another name\n")); |
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1698 MSG_PUTS(_("and run diff with the original file to check for changes)")); |
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1699 } |
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1700 else |
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1701 MSG(_("Recovery completed. Buffer contents equals file contents.")); |
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1702 MSG_PUTS(_("\nYou may want to delete the .swp file now.\n\n")); |
7 | 1703 cmdline_row = msg_row; |
1704 } | |
2267 | 1705 #ifdef FEAT_CRYPT |
1706 if (*buf->b_p_key != NUL && STRCMP(curbuf->b_p_key, buf->b_p_key) != 0) | |
1707 { | |
1708 MSG_PUTS(_("Using crypt key from swap file for the text file.\n")); | |
1709 set_option_value((char_u *)"key", 0L, buf->b_p_key, OPT_LOCAL); | |
1710 } | |
1711 #endif | |
7 | 1712 redraw_curbuf_later(NOT_VALID); |
1713 | |
1714 theend: | |
2267 | 1715 vim_free(fname_used); |
7 | 1716 recoverymode = FALSE; |
1717 if (mfp != NULL) | |
1718 { | |
1719 if (hp != NULL) | |
1720 mf_put(mfp, hp, FALSE, FALSE); | |
1721 mf_close(mfp, FALSE); /* will also vim_free(mfp->mf_fname) */ | |
1722 } | |
1053 | 1723 if (buf != NULL) |
1724 { | |
2267 | 1725 #ifdef FEAT_CRYPT |
1726 if (buf->b_p_key != curbuf->b_p_key) | |
1727 free_string_option(buf->b_p_key); | |
2407
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1728 free_string_option(buf->b_p_cm); |
2267 | 1729 #endif |
1053 | 1730 vim_free(buf->b_ml.ml_stack); |
1731 vim_free(buf); | |
1732 } | |
7 | 1733 if (serious_error && called_from_main) |
1734 ml_close(curbuf, TRUE); | |
1735 else | |
1736 { | |
1737 apply_autocmds(EVENT_BUFREADPOST, NULL, curbuf->b_fname, FALSE, curbuf); | |
1738 apply_autocmds(EVENT_BUFWINENTER, NULL, curbuf->b_fname, FALSE, curbuf); | |
1739 } | |
1740 return; | |
1741 } | |
1742 | |
1743 /* | |
1744 * Find the names of swap files in current directory and the directory given | |
1745 * with the 'directory' option. | |
1746 * | |
1747 * Used to: | |
1748 * - list the swap files for "vim -r" | |
1749 * - count the number of swap files when recovering | |
1750 * - list the swap files when recovering | |
1751 * - find the name of the n'th swap file when recovering | |
1752 */ | |
1753 int | |
7827
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|
1754 recover_names( |
41789f16d6b2
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|
1755 char_u *fname, /* base for swap file name */ |
41789f16d6b2
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1756 int list, /* when TRUE, list the swap file names */ |
41789f16d6b2
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1757 int nr, /* when non-zero, return nr'th swap file name */ |
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1758 char_u **fname_out) /* result when "nr" > 0 */ |
7 | 1759 { |
1760 int num_names; | |
1761 char_u *(names[6]); | |
1762 char_u *tail; | |
1763 char_u *p; | |
1764 int num_files; | |
1765 int file_count = 0; | |
1766 char_u **files; | |
1767 int i; | |
1768 char_u *dirp; | |
1769 char_u *dir_name; | |
2175 | 1770 char_u *fname_res = NULL; |
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1771 #ifdef HAVE_READLINK |
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1772 char_u fname_buf[MAXPATHL]; |
2175 | 1773 #endif |
1774 | |
1775 if (fname != NULL) | |
1776 { | |
1777 #ifdef HAVE_READLINK | |
2267 | 1778 /* Expand symlink in the file name, because the swap file is created |
1779 * with the actual file instead of with the symlink. */ | |
1780 if (resolve_symlink(fname, fname_buf) == OK) | |
1781 fname_res = fname_buf; | |
1782 else | |
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1783 #endif |
2267 | 1784 fname_res = fname; |
2175 | 1785 } |
7 | 1786 |
1787 if (list) | |
1788 { | |
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1789 /* use msg() to start the scrolling properly */ |
7 | 1790 msg((char_u *)_("Swap files found:")); |
1791 msg_putchar('\n'); | |
1792 } | |
1793 | |
1794 /* | |
1795 * Do the loop for every directory in 'directory'. | |
1796 * First allocate some memory to put the directory name in. | |
1797 */ | |
1798 dir_name = alloc((unsigned)STRLEN(p_dir) + 1); | |
1799 dirp = p_dir; | |
1800 while (dir_name != NULL && *dirp) | |
1801 { | |
1802 /* | |
1803 * Isolate a directory name from *dirp and put it in dir_name (we know | |
1804 * it is large enough, so use 31000 for length). | |
1805 * Advance dirp to next directory name. | |
1806 */ | |
1807 (void)copy_option_part(&dirp, dir_name, 31000, ","); | |
1808 | |
1809 if (dir_name[0] == '.' && dir_name[1] == NUL) /* check current dir */ | |
1810 { | |
2267 | 1811 if (fname == NULL) |
7 | 1812 { |
1813 #ifdef VMS | |
1814 names[0] = vim_strsave((char_u *)"*_sw%"); | |
1815 #else | |
1816 names[0] = vim_strsave((char_u *)"*.sw?"); | |
1817 #endif | |
1005 | 1818 #if defined(UNIX) || defined(WIN3264) |
1819 /* For Unix names starting with a dot are special. MS-Windows | |
1820 * supports this too, on some file systems. */ | |
7 | 1821 names[1] = vim_strsave((char_u *)".*.sw?"); |
1822 names[2] = vim_strsave((char_u *)".sw?"); | |
1823 num_names = 3; | |
1824 #else | |
1825 # ifdef VMS | |
1826 names[1] = vim_strsave((char_u *)".*_sw%"); | |
1827 num_names = 2; | |
1828 # else | |
1829 num_names = 1; | |
1830 # endif | |
1831 #endif | |
1832 } | |
1833 else | |
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1834 num_names = recov_file_names(names, fname_res, TRUE); |
7 | 1835 } |
1836 else /* check directory dir_name */ | |
1837 { | |
2267 | 1838 if (fname == NULL) |
7 | 1839 { |
1840 #ifdef VMS | |
1841 names[0] = concat_fnames(dir_name, (char_u *)"*_sw%", TRUE); | |
1842 #else | |
1843 names[0] = concat_fnames(dir_name, (char_u *)"*.sw?", TRUE); | |
1844 #endif | |
1005 | 1845 #if defined(UNIX) || defined(WIN3264) |
1846 /* For Unix names starting with a dot are special. MS-Windows | |
1847 * supports this too, on some file systems. */ | |
7 | 1848 names[1] = concat_fnames(dir_name, (char_u *)".*.sw?", TRUE); |
1849 names[2] = concat_fnames(dir_name, (char_u *)".sw?", TRUE); | |
1850 num_names = 3; | |
1851 #else | |
1852 # ifdef VMS | |
1853 names[1] = concat_fnames(dir_name, (char_u *)".*_sw%", TRUE); | |
1854 num_names = 2; | |
1855 # else | |
1856 num_names = 1; | |
1857 # endif | |
1858 #endif | |
1859 } | |
1860 else | |
1861 { | |
1862 #if defined(UNIX) || defined(WIN3264) | |
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1863 int len = (int)STRLEN(dir_name); |
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1865 p = dir_name + len; |
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1866 if (after_pathsep(dir_name, p) && len > 1 && p[-1] == p[-2]) |
7 | 1867 { |
1868 /* Ends with '//', Use Full path for swap name */ | |
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1869 tail = make_percent_swname(dir_name, fname_res); |
7 | 1870 } |
1871 else | |
1872 #endif | |
1873 { | |
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1874 tail = gettail(fname_res); |
7 | 1875 tail = concat_fnames(dir_name, tail, TRUE); |
1876 } | |
1877 if (tail == NULL) | |
1878 num_names = 0; | |
1879 else | |
1880 { | |
1881 num_names = recov_file_names(names, tail, FALSE); | |
1882 vim_free(tail); | |
1883 } | |
1884 } | |
1885 } | |
1886 | |
1887 /* check for out-of-memory */ | |
1888 for (i = 0; i < num_names; ++i) | |
1889 { | |
1890 if (names[i] == NULL) | |
1891 { | |
1892 for (i = 0; i < num_names; ++i) | |
1893 vim_free(names[i]); | |
1894 num_names = 0; | |
1895 } | |
1896 } | |
1897 if (num_names == 0) | |
1898 num_files = 0; | |
1899 else if (expand_wildcards(num_names, names, &num_files, &files, | |
1900 EW_KEEPALL|EW_FILE|EW_SILENT) == FAIL) | |
1901 num_files = 0; | |
1902 | |
1903 /* | |
1904 * When no swap file found, wildcard expansion might have failed (e.g. | |
1905 * not able to execute the shell). | |
1906 * Try finding a swap file by simply adding ".swp" to the file name. | |
1907 */ | |
2267 | 1908 if (*dirp == NUL && file_count + num_files == 0 && fname != NULL) |
7 | 1909 { |
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diff
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|
1910 stat_T st; |
7 | 1911 char_u *swapname; |
1912 | |
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|
1913 swapname = modname(fname_res, |
2823 | 1914 #if defined(VMS) |
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|
1915 (char_u *)"_swp", FALSE |
7 | 1916 #else |
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|
1917 (char_u *)".swp", TRUE |
7 | 1918 #endif |
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|
1919 ); |
7 | 1920 if (swapname != NULL) |
1921 { | |
1922 if (mch_stat((char *)swapname, &st) != -1) /* It exists! */ | |
1923 { | |
1924 files = (char_u **)alloc((unsigned)sizeof(char_u *)); | |
1925 if (files != NULL) | |
1926 { | |
1927 files[0] = swapname; | |
1928 swapname = NULL; | |
1929 num_files = 1; | |
1930 } | |
1931 } | |
1932 vim_free(swapname); | |
1933 } | |
1934 } | |
1935 | |
1936 /* | |
1937 * remove swapfile name of the current buffer, it must be ignored | |
1938 */ | |
1939 if (curbuf->b_ml.ml_mfp != NULL | |
1940 && (p = curbuf->b_ml.ml_mfp->mf_fname) != NULL) | |
1941 { | |
1942 for (i = 0; i < num_files; ++i) | |
1943 if (fullpathcmp(p, files[i], TRUE) & FPC_SAME) | |
1944 { | |
1855 | 1945 /* Remove the name from files[i]. Move further entries |
1946 * down. When the array becomes empty free it here, since | |
1947 * FreeWild() won't be called below. */ | |
7 | 1948 vim_free(files[i]); |
1855 | 1949 if (--num_files == 0) |
1950 vim_free(files); | |
1951 else | |
1952 for ( ; i < num_files; ++i) | |
1953 files[i] = files[i + 1]; | |
7 | 1954 } |
1955 } | |
838 | 1956 if (nr > 0) |
7 | 1957 { |
1958 file_count += num_files; | |
1959 if (nr <= file_count) | |
1960 { | |
2267 | 1961 *fname_out = vim_strsave( |
1962 files[nr - 1 + num_files - file_count]); | |
7 | 1963 dirp = (char_u *)""; /* stop searching */ |
1964 } | |
1965 } | |
1966 else if (list) | |
1967 { | |
1968 if (dir_name[0] == '.' && dir_name[1] == NUL) | |
1969 { | |
2267 | 1970 if (fname == NULL) |
7 | 1971 MSG_PUTS(_(" In current directory:\n")); |
1972 else | |
1973 MSG_PUTS(_(" Using specified name:\n")); | |
1974 } | |
1975 else | |
1976 { | |
1977 MSG_PUTS(_(" In directory ")); | |
1978 msg_home_replace(dir_name); | |
1979 MSG_PUTS(":\n"); | |
1980 } | |
1981 | |
1982 if (num_files) | |
1983 { | |
1984 for (i = 0; i < num_files; ++i) | |
1985 { | |
1986 /* print the swap file name */ | |
1987 msg_outnum((long)++file_count); | |
1988 MSG_PUTS(". "); | |
1989 msg_puts(gettail(files[i])); | |
1990 msg_putchar('\n'); | |
1991 (void)swapfile_info(files[i]); | |
1992 } | |
1993 } | |
1994 else | |
1995 MSG_PUTS(_(" -- none --\n")); | |
1996 out_flush(); | |
1997 } | |
1998 else | |
1999 file_count += num_files; | |
2000 | |
2001 for (i = 0; i < num_names; ++i) | |
2002 vim_free(names[i]); | |
838 | 2003 if (num_files > 0) |
2004 FreeWild(num_files, files); | |
7 | 2005 } |
2006 vim_free(dir_name); | |
2007 return file_count; | |
2008 } | |
2009 | |
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2010 #if defined(UNIX) || defined(WIN3264) || defined(PROTO) |
7 | 2011 /* |
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|
2012 * Need _very_ long file names. |
7 | 2013 * Append the full path to name with path separators made into percent |
2014 * signs, to dir. An unnamed buffer is handled as "" (<currentdir>/"") | |
2015 */ | |
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changeset
|
2016 char_u * |
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diff
changeset
|
2017 make_percent_swname(char_u *dir, char_u *name) |
7 | 2018 { |
14475
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|
2019 char_u *d = NULL, *s, *f; |
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|
2020 |
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|
2021 f = fix_fname(name != NULL ? name : (char_u *)""); |
7 | 2022 if (f != NULL) |
2023 { | |
2024 s = alloc((unsigned)(STRLEN(f) + 1)); | |
2025 if (s != NULL) | |
2026 { | |
39 | 2027 STRCPY(s, f); |
11127
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changeset
|
2028 for (d = s; *d != NUL; MB_PTR_ADV(d)) |
39 | 2029 if (vim_ispathsep(*d)) |
2030 *d = '%'; | |
7 | 2031 d = concat_fnames(dir, s, TRUE); |
2032 vim_free(s); | |
2033 } | |
2034 vim_free(f); | |
2035 } | |
2036 return d; | |
2037 } | |
2038 #endif | |
2039 | |
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diff
changeset
|
2040 #if (defined(UNIX) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)) |
7 | 2041 static int process_still_running; |
2042 #endif | |
2043 | |
2044 /* | |
14599
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2045 * Return information found in swapfile "fname" in dictionary "d". |
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|
2046 * This is used by the swapinfo() function. |
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2047 */ |
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|
2048 void |
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2049 get_b0_dict(char_u *fname, dict_T *d) |
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2050 { |
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2051 int fd; |
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2052 struct block0 b0; |
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2053 |
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2054 if ((fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0)) >= 0) |
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2055 { |
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|
2056 if (read_eintr(fd, &b0, sizeof(b0)) == sizeof(b0)) |
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|
2057 { |
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|
2058 if (b0_magic_wrong(&b0)) |
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|
2059 { |
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|
2060 dict_add_string(d, "error", |
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|
2061 vim_strsave((char_u *)"magic number mismatch")); |
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2062 } |
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|
2063 else |
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|
2064 { |
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|
2065 /* we have swap information */ |
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|
2066 dict_add_string(d, "version", vim_strsave(b0.b0_version)); |
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2067 dict_add_string(d, "user", vim_strsave(b0.b0_uname)); |
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|
2068 dict_add_string(d, "host", vim_strsave(b0.b0_hname)); |
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2069 dict_add_string(d, "fname", vim_strsave(b0.b0_fname)); |
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2070 |
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2071 dict_add_number(d, "pid", char_to_long(b0.b0_pid)); |
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2072 dict_add_number(d, "mtime", char_to_long(b0.b0_mtime)); |
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2073 #ifdef CHECK_INODE |
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2074 dict_add_number(d, "inode", char_to_long(b0.b0_ino)); |
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|
2075 #endif |
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|
2076 } |
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|
2077 } |
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2078 else |
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2079 dict_add_string(d, "error", |
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|
2080 vim_strsave((char_u *)"Cannot read file")); |
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|
2081 close(fd); |
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2082 } |
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|
2083 else |
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2084 dict_add_string(d, "error", vim_strsave((char_u *)"Cannot open file")); |
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|
2085 } |
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|
2086 |
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diff
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|
2087 /* |
580 | 2088 * Give information about an existing swap file. |
7 | 2089 * Returns timestamp (0 when unknown). |
2090 */ | |
2091 static time_t | |
7827
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7803
diff
changeset
|
2092 swapfile_info(char_u *fname) |
7 | 2093 { |
9387
f094d4085014
commit https://github.com/vim/vim/commit/8767f52fbfd4f053ce00a978227c95f1d7d323fe
Christian Brabandt <cb@256bit.org>
parents:
9295
diff
changeset
|
2094 stat_T st; |
7 | 2095 int fd; |
2096 struct block0 b0; | |
2097 time_t x = (time_t)0; | |
1001 | 2098 char *p; |
7 | 2099 #ifdef UNIX |
2100 char_u uname[B0_UNAME_SIZE]; | |
2101 #endif | |
2102 | |
2103 /* print the swap file date */ | |
2104 if (mch_stat((char *)fname, &st) != -1) | |
2105 { | |
2106 #ifdef UNIX | |
2107 /* print name of owner of the file */ | |
2108 if (mch_get_uname(st.st_uid, uname, B0_UNAME_SIZE) == OK) | |
2109 { | |
2110 MSG_PUTS(_(" owned by: ")); | |
2111 msg_outtrans(uname); | |
2112 MSG_PUTS(_(" dated: ")); | |
2113 } | |
2114 else | |
2115 #endif | |
2116 MSG_PUTS(_(" dated: ")); | |
2117 x = st.st_mtime; /* Manx C can't do &st.st_mtime */ | |
1001 | 2118 p = ctime(&x); /* includes '\n' */ |
2119 if (p == NULL) | |
2120 MSG_PUTS("(invalid)\n"); | |
2121 else | |
2122 MSG_PUTS(p); | |
7 | 2123 } |
2124 | |
2125 /* | |
2126 * print the original file name | |
2127 */ | |
2128 fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
2129 if (fd >= 0) | |
2130 { | |
2664 | 2131 if (read_eintr(fd, &b0, sizeof(b0)) == sizeof(b0)) |
7 | 2132 { |
2133 if (STRNCMP(b0.b0_version, "VIM 3.0", 7) == 0) | |
2134 { | |
2135 MSG_PUTS(_(" [from Vim version 3.0]")); | |
2136 } | |
2267 | 2137 else if (ml_check_b0_id(&b0) == FAIL) |
7 | 2138 { |
2139 MSG_PUTS(_(" [does not look like a Vim swap file]")); | |
2140 } | |
2141 else | |
2142 { | |
2143 MSG_PUTS(_(" file name: ")); | |
2144 if (b0.b0_fname[0] == NUL) | |
9 | 2145 MSG_PUTS(_("[No Name]")); |
7 | 2146 else |
2147 msg_outtrans(b0.b0_fname); | |
2148 | |
2149 MSG_PUTS(_("\n modified: ")); | |
2150 MSG_PUTS(b0.b0_dirty ? _("YES") : _("no")); | |
2151 | |
2152 if (*(b0.b0_uname) != NUL) | |
2153 { | |
2154 MSG_PUTS(_("\n user name: ")); | |
2155 msg_outtrans(b0.b0_uname); | |
2156 } | |
2157 | |
2158 if (*(b0.b0_hname) != NUL) | |
2159 { | |
2160 if (*(b0.b0_uname) != NUL) | |
2161 MSG_PUTS(_(" host name: ")); | |
2162 else | |
2163 MSG_PUTS(_("\n host name: ")); | |
2164 msg_outtrans(b0.b0_hname); | |
2165 } | |
2166 | |
2167 if (char_to_long(b0.b0_pid) != 0L) | |
2168 { | |
2169 MSG_PUTS(_("\n process ID: ")); | |
2170 msg_outnum(char_to_long(b0.b0_pid)); | |
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diff
changeset
|
2171 #if defined(UNIX) |
7 | 2172 /* EMX kill() not working correctly, it seems */ |
2173 if (kill((pid_t)char_to_long(b0.b0_pid), 0) == 0) | |
2174 { | |
2175 MSG_PUTS(_(" (still running)")); | |
2176 # if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) | |
2177 process_still_running = TRUE; | |
2178 # endif | |
2179 } | |
2180 #endif | |
2181 } | |
2182 | |
2183 if (b0_magic_wrong(&b0)) | |
2184 { | |
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7961
diff
changeset
|
2185 #if defined(MSWIN) |
7 | 2186 if (STRNCMP(b0.b0_hname, "PC ", 3) == 0) |
2187 MSG_PUTS(_("\n [not usable with this version of Vim]")); | |
2188 else | |
2189 #endif | |
2190 MSG_PUTS(_("\n [not usable on this computer]")); | |
2191 } | |
2192 } | |
2193 } | |
2194 else | |
2195 MSG_PUTS(_(" [cannot be read]")); | |
2196 close(fd); | |
2197 } | |
2198 else | |
2199 MSG_PUTS(_(" [cannot be opened]")); | |
2200 msg_putchar('\n'); | |
2201 | |
2202 return x; | |
2203 } | |
2204 | |
2205 static int | |
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7803
diff
changeset
|
2206 recov_file_names(char_u **names, char_u *path, int prepend_dot) |
7 | 2207 { |
2208 int num_names; | |
2209 | |
2210 /* | |
2211 * (Win32 and Win64) never short names, but do prepend a dot. | |
2212 * (Not MS-DOS or Win32 or Win64) maybe short name, maybe not: Try both. | |
2213 * Only use the short name if it is different. | |
2214 */ | |
2215 char_u *p; | |
2216 int i; | |
2217 # ifndef WIN3264 | |
2218 int shortname = curbuf->b_shortname; | |
2219 | |
2220 curbuf->b_shortname = FALSE; | |
2221 # endif | |
2222 | |
2223 num_names = 0; | |
2224 | |
2225 /* | |
2226 * May also add the file name with a dot prepended, for swap file in same | |
2227 * dir as original file. | |
2228 */ | |
2229 if (prepend_dot) | |
2230 { | |
2231 names[num_names] = modname(path, (char_u *)".sw?", TRUE); | |
2232 if (names[num_names] == NULL) | |
2233 goto end; | |
2234 ++num_names; | |
2235 } | |
2236 | |
2237 /* | |
2238 * Form the normal swap file name pattern by appending ".sw?". | |
2239 */ | |
2240 #ifdef VMS | |
2241 names[num_names] = concat_fnames(path, (char_u *)"_sw%", FALSE); | |
2242 #else | |
2243 names[num_names] = concat_fnames(path, (char_u *)".sw?", FALSE); | |
2244 #endif | |
2245 if (names[num_names] == NULL) | |
2246 goto end; | |
2247 if (num_names >= 1) /* check if we have the same name twice */ | |
2248 { | |
2249 p = names[num_names - 1]; | |
2250 i = (int)STRLEN(names[num_names - 1]) - (int)STRLEN(names[num_names]); | |
2251 if (i > 0) | |
2252 p += i; /* file name has been expanded to full path */ | |
2253 | |
2254 if (STRCMP(p, names[num_names]) != 0) | |
2255 ++num_names; | |
2256 else | |
2257 vim_free(names[num_names]); | |
2258 } | |
2259 else | |
2260 ++num_names; | |
2261 | |
2262 # ifndef WIN3264 | |
2263 /* | |
2264 * Also try with 'shortname' set, in case the file is on a DOS filesystem. | |
2265 */ | |
2266 curbuf->b_shortname = TRUE; | |
2267 #ifdef VMS | |
2268 names[num_names] = modname(path, (char_u *)"_sw%", FALSE); | |
2269 #else | |
2270 names[num_names] = modname(path, (char_u *)".sw?", FALSE); | |
2271 #endif | |
2272 if (names[num_names] == NULL) | |
2273 goto end; | |
2274 | |
2275 /* | |
2276 * Remove the one from 'shortname', if it's the same as with 'noshortname'. | |
2277 */ | |
2278 p = names[num_names]; | |
2279 i = STRLEN(names[num_names]) - STRLEN(names[num_names - 1]); | |
2280 if (i > 0) | |
2281 p += i; /* file name has been expanded to full path */ | |
2282 if (STRCMP(names[num_names - 1], p) == 0) | |
2283 vim_free(names[num_names]); | |
2284 else | |
2285 ++num_names; | |
2286 # endif | |
2287 | |
2288 end: | |
2289 # ifndef WIN3264 | |
2290 curbuf->b_shortname = shortname; | |
2291 # endif | |
2292 | |
2293 return num_names; | |
2294 } | |
2295 | |
2296 /* | |
2297 * sync all memlines | |
2298 * | |
2299 * If 'check_file' is TRUE, check if original file exists and was not changed. | |
2300 * If 'check_char' is TRUE, stop syncing when character becomes available, but | |
2301 * always sync at least one block. | |
2302 */ | |
2303 void | |
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diff
changeset
|
2304 ml_sync_all(int check_file, int check_char) |
7 | 2305 { |
2306 buf_T *buf; | |
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diff
changeset
|
2307 stat_T st; |
7 | 2308 |
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diff
changeset
|
2309 FOR_ALL_BUFFERS(buf) |
7 | 2310 { |
2311 if (buf->b_ml.ml_mfp == NULL || buf->b_ml.ml_mfp->mf_fname == NULL) | |
2312 continue; /* no file */ | |
2313 | |
2314 ml_flush_line(buf); /* flush buffered line */ | |
2315 /* flush locked block */ | |
2316 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); | |
2317 if (bufIsChanged(buf) && check_file && mf_need_trans(buf->b_ml.ml_mfp) | |
2318 && buf->b_ffname != NULL) | |
2319 { | |
2320 /* | |
2321 * If the original file does not exist anymore or has been changed | |
2322 * call ml_preserve() to get rid of all negative numbered blocks. | |
2323 */ | |
2324 if (mch_stat((char *)buf->b_ffname, &st) == -1 | |
2325 || st.st_mtime != buf->b_mtime_read | |
2241
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2326 || st.st_size != buf->b_orig_size) |
7 | 2327 { |
2328 ml_preserve(buf, FALSE); | |
2329 did_check_timestamps = FALSE; | |
2330 need_check_timestamps = TRUE; /* give message later */ | |
2331 } | |
2332 } | |
2333 if (buf->b_ml.ml_mfp->mf_dirty) | |
2334 { | |
2335 (void)mf_sync(buf->b_ml.ml_mfp, (check_char ? MFS_STOP : 0) | |
2336 | (bufIsChanged(buf) ? MFS_FLUSH : 0)); | |
2337 if (check_char && ui_char_avail()) /* character available now */ | |
2338 break; | |
2339 } | |
2340 } | |
2341 } | |
2342 | |
2343 /* | |
2344 * sync one buffer, including negative blocks | |
2345 * | |
2346 * after this all the blocks are in the swap file | |
2347 * | |
2348 * Used for the :preserve command and when the original file has been | |
2349 * changed or deleted. | |
2350 * | |
2351 * when message is TRUE the success of preserving is reported | |
2352 */ | |
2353 void | |
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diff
changeset
|
2354 ml_preserve(buf_T *buf, int message) |
7 | 2355 { |
2356 bhdr_T *hp; | |
2357 linenr_T lnum; | |
2358 memfile_T *mfp = buf->b_ml.ml_mfp; | |
2359 int status; | |
2360 int got_int_save = got_int; | |
2361 | |
2362 if (mfp == NULL || mfp->mf_fname == NULL) | |
2363 { | |
2364 if (message) | |
2365 EMSG(_("E313: Cannot preserve, there is no swap file")); | |
2366 return; | |
2367 } | |
2368 | |
2369 /* We only want to stop when interrupted here, not when interrupted | |
2370 * before. */ | |
2371 got_int = FALSE; | |
2372 | |
2373 ml_flush_line(buf); /* flush buffered line */ | |
2374 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
2375 status = mf_sync(mfp, MFS_ALL | MFS_FLUSH); | |
2376 | |
2377 /* stack is invalid after mf_sync(.., MFS_ALL) */ | |
2378 buf->b_ml.ml_stack_top = 0; | |
2379 | |
2380 /* | |
2381 * Some of the data blocks may have been changed from negative to | |
2382 * positive block number. In that case the pointer blocks need to be | |
2383 * updated. | |
2384 * | |
2385 * We don't know in which pointer block the references are, so we visit | |
2386 * all data blocks until there are no more translations to be done (or | |
2387 * we hit the end of the file, which can only happen in case a write fails, | |
2388 * e.g. when file system if full). | |
2389 * ml_find_line() does the work by translating the negative block numbers | |
2390 * when getting the first line of each data block. | |
2391 */ | |
2392 if (mf_need_trans(mfp) && !got_int) | |
2393 { | |
2394 lnum = 1; | |
2395 while (mf_need_trans(mfp) && lnum <= buf->b_ml.ml_line_count) | |
2396 { | |
2397 hp = ml_find_line(buf, lnum, ML_FIND); | |
2398 if (hp == NULL) | |
2399 { | |
2400 status = FAIL; | |
2401 goto theend; | |
2402 } | |
2403 CHECK(buf->b_ml.ml_locked_low != lnum, "low != lnum"); | |
2404 lnum = buf->b_ml.ml_locked_high + 1; | |
2405 } | |
2406 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
2407 /* sync the updated pointer blocks */ | |
2408 if (mf_sync(mfp, MFS_ALL | MFS_FLUSH) == FAIL) | |
2409 status = FAIL; | |
2410 buf->b_ml.ml_stack_top = 0; /* stack is invalid now */ | |
2411 } | |
2412 theend: | |
2413 got_int |= got_int_save; | |
2414 | |
2415 if (message) | |
2416 { | |
2417 if (status == OK) | |
2418 MSG(_("File preserved")); | |
2419 else | |
2420 EMSG(_("E314: Preserve failed")); | |
2421 } | |
2422 } | |
2423 | |
2424 /* | |
2425 * NOTE: The pointer returned by the ml_get_*() functions only remains valid | |
2426 * until the next call! | |
2427 * line1 = ml_get(1); | |
2428 * line2 = ml_get(2); // line1 is now invalid! | |
2429 * Make a copy of the line if necessary. | |
2430 */ | |
2431 /* | |
2657 | 2432 * Return a pointer to a (read-only copy of a) line. |
7 | 2433 * |
2434 * On failure an error message is given and IObuff is returned (to avoid | |
2435 * having to check for error everywhere). | |
2436 */ | |
2437 char_u * | |
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diff
changeset
|
2438 ml_get(linenr_T lnum) |
7 | 2439 { |
2440 return ml_get_buf(curbuf, lnum, FALSE); | |
2441 } | |
2442 | |
2443 /* | |
2657 | 2444 * Return pointer to position "pos". |
7 | 2445 */ |
2446 char_u * | |
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diff
changeset
|
2447 ml_get_pos(pos_T *pos) |
7 | 2448 { |
2449 return (ml_get_buf(curbuf, pos->lnum, FALSE) + pos->col); | |
2450 } | |
2451 | |
2452 /* | |
2657 | 2453 * Return pointer to cursor line. |
7 | 2454 */ |
2455 char_u * | |
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diff
changeset
|
2456 ml_get_curline(void) |
7 | 2457 { |
2458 return ml_get_buf(curbuf, curwin->w_cursor.lnum, FALSE); | |
2459 } | |
2460 | |
2461 /* | |
2657 | 2462 * Return pointer to cursor position. |
7 | 2463 */ |
2464 char_u * | |
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diff
changeset
|
2465 ml_get_cursor(void) |
7 | 2466 { |
2467 return (ml_get_buf(curbuf, curwin->w_cursor.lnum, FALSE) + | |
2468 curwin->w_cursor.col); | |
2469 } | |
2470 | |
2471 /* | |
2657 | 2472 * Return a pointer to a line in a specific buffer |
7 | 2473 * |
2474 * "will_change": if TRUE mark the buffer dirty (chars in the line will be | |
2475 * changed) | |
2476 */ | |
2477 char_u * | |
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diff
changeset
|
2478 ml_get_buf( |
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|
2479 buf_T *buf, |
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|
2480 linenr_T lnum, |
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diff
changeset
|
2481 int will_change) /* line will be changed */ |
7 | 2482 { |
1068 | 2483 bhdr_T *hp; |
2484 DATA_BL *dp; | |
2485 char_u *ptr; | |
2486 static int recursive = 0; | |
7 | 2487 |
2488 if (lnum > buf->b_ml.ml_line_count) /* invalid line number */ | |
2489 { | |
1068 | 2490 if (recursive == 0) |
2491 { | |
2492 /* Avoid giving this message for a recursive call, may happen when | |
2493 * the GUI redraws part of the text. */ | |
2494 ++recursive; | |
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changeset
|
2495 IEMSGN(_("E315: ml_get: invalid lnum: %ld"), lnum); |
1068 | 2496 --recursive; |
2497 } | |
7 | 2498 errorret: |
2499 STRCPY(IObuff, "???"); | |
2500 return IObuff; | |
2501 } | |
2502 if (lnum <= 0) /* pretend line 0 is line 1 */ | |
2503 lnum = 1; | |
2504 | |
2505 if (buf->b_ml.ml_mfp == NULL) /* there are no lines */ | |
2506 return (char_u *)""; | |
2507 | |
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2508 /* |
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|
2509 * See if it is the same line as requested last time. |
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|
2510 * Otherwise may need to flush last used line. |
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|
2511 * Don't use the last used line when 'swapfile' is reset, need to load all |
3cdf2a653e00
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diff
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|
2512 * blocks. |
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diff
changeset
|
2513 */ |
1066 | 2514 if (buf->b_ml.ml_line_lnum != lnum || mf_dont_release) |
7 | 2515 { |
2516 ml_flush_line(buf); | |
2517 | |
2518 /* | |
2519 * Find the data block containing the line. | |
2520 * This also fills the stack with the blocks from the root to the data | |
2521 * block and releases any locked block. | |
2522 */ | |
2523 if ((hp = ml_find_line(buf, lnum, ML_FIND)) == NULL) | |
2524 { | |
1068 | 2525 if (recursive == 0) |
2526 { | |
2527 /* Avoid giving this message for a recursive call, may happen | |
2528 * when the GUI redraws part of the text. */ | |
2529 ++recursive; | |
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diff
changeset
|
2530 IEMSGN(_("E316: ml_get: cannot find line %ld"), lnum); |
1068 | 2531 --recursive; |
2532 } | |
7 | 2533 goto errorret; |
2534 } | |
2535 | |
2536 dp = (DATA_BL *)(hp->bh_data); | |
2537 | |
2538 ptr = (char_u *)dp + ((dp->db_index[lnum - buf->b_ml.ml_locked_low]) & DB_INDEX_MASK); | |
2539 buf->b_ml.ml_line_ptr = ptr; | |
2540 buf->b_ml.ml_line_lnum = lnum; | |
2541 buf->b_ml.ml_flags &= ~ML_LINE_DIRTY; | |
2542 } | |
2543 if (will_change) | |
2544 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
2545 | |
2546 return buf->b_ml.ml_line_ptr; | |
2547 } | |
2548 | |
2549 /* | |
2550 * Check if a line that was just obtained by a call to ml_get | |
2551 * is in allocated memory. | |
2552 */ | |
2553 int | |
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diff
changeset
|
2554 ml_line_alloced(void) |
7 | 2555 { |
2556 return (curbuf->b_ml.ml_flags & ML_LINE_DIRTY); | |
2557 } | |
2558 | |
2559 /* | |
2560 * Append a line after lnum (may be 0 to insert a line in front of the file). | |
2561 * "line" does not need to be allocated, but can't be another line in a | |
2562 * buffer, unlocking may make it invalid. | |
2563 * | |
2564 * newfile: TRUE when starting to edit a new file, meaning that pe_old_lnum | |
2565 * will be set for recovery | |
2566 * Check: The caller of this function should probably also call | |
2567 * appended_lines(). | |
2568 * | |
2569 * return FAIL for failure, OK otherwise | |
2570 */ | |
2571 int | |
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|
2572 ml_append( |
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|
2573 linenr_T lnum, /* append after this line (can be 0) */ |
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2574 char_u *line, /* text of the new line */ |
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|
2575 colnr_T len, /* length of new line, including NUL, or 0 */ |
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|
2576 int newfile) /* flag, see above */ |
7 | 2577 { |
2578 /* When starting up, we might still need to create the memfile */ | |
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|
2579 if (curbuf->b_ml.ml_mfp == NULL && open_buffer(FALSE, NULL, 0) == FAIL) |
7 | 2580 return FAIL; |
2581 | |
2582 if (curbuf->b_ml.ml_line_lnum != 0) | |
2583 ml_flush_line(curbuf); | |
2584 return ml_append_int(curbuf, lnum, line, len, newfile, FALSE); | |
2585 } | |
2586 | |
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2587 #if defined(FEAT_SPELL) || defined(FEAT_QUICKFIX) || defined(PROTO) |
625 | 2588 /* |
2589 * Like ml_append() but for an arbitrary buffer. The buffer must already have | |
2590 * a memline. | |
2591 */ | |
2592 int | |
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|
2593 ml_append_buf( |
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2594 buf_T *buf, |
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|
2595 linenr_T lnum, /* append after this line (can be 0) */ |
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|
2596 char_u *line, /* text of the new line */ |
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|
2597 colnr_T len, /* length of new line, including NUL, or 0 */ |
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diff
changeset
|
2598 int newfile) /* flag, see above */ |
625 | 2599 { |
2600 if (buf->b_ml.ml_mfp == NULL) | |
2601 return FAIL; | |
2602 | |
2603 if (buf->b_ml.ml_line_lnum != 0) | |
2604 ml_flush_line(buf); | |
2605 return ml_append_int(buf, lnum, line, len, newfile, FALSE); | |
2606 } | |
2607 #endif | |
2608 | |
7 | 2609 static int |
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|
2610 ml_append_int( |
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|
2611 buf_T *buf, |
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diff
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|
2612 linenr_T lnum, /* append after this line (can be 0) */ |
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diff
changeset
|
2613 char_u *line, /* text of the new line */ |
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diff
changeset
|
2614 colnr_T len, /* length of line, including NUL, or 0 */ |
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diff
changeset
|
2615 int newfile, /* flag, see above */ |
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diff
changeset
|
2616 int mark) /* mark the new line */ |
7 | 2617 { |
2618 int i; | |
2619 int line_count; /* number of indexes in current block */ | |
2620 int offset; | |
2621 int from, to; | |
2622 int space_needed; /* space needed for new line */ | |
2623 int page_size; | |
2624 int page_count; | |
2625 int db_idx; /* index for lnum in data block */ | |
2626 bhdr_T *hp; | |
2627 memfile_T *mfp; | |
2628 DATA_BL *dp; | |
2629 PTR_BL *pp; | |
2630 infoptr_T *ip; | |
2631 | |
2632 /* lnum out of range */ | |
2633 if (lnum > buf->b_ml.ml_line_count || buf->b_ml.ml_mfp == NULL) | |
2634 return FAIL; | |
2635 | |
2636 if (lowest_marked && lowest_marked > lnum) | |
2637 lowest_marked = lnum + 1; | |
2638 | |
2639 if (len == 0) | |
2640 len = (colnr_T)STRLEN(line) + 1; /* space needed for the text */ | |
2641 space_needed = len + INDEX_SIZE; /* space needed for text + index */ | |
2642 | |
2643 mfp = buf->b_ml.ml_mfp; | |
2644 page_size = mfp->mf_page_size; | |
2645 | |
2646 /* | |
2647 * find the data block containing the previous line | |
2648 * This also fills the stack with the blocks from the root to the data block | |
2649 * This also releases any locked block. | |
2650 */ | |
2651 if ((hp = ml_find_line(buf, lnum == 0 ? (linenr_T)1 : lnum, | |
2652 ML_INSERT)) == NULL) | |
2653 return FAIL; | |
2654 | |
2655 buf->b_ml.ml_flags &= ~ML_EMPTY; | |
2656 | |
2657 if (lnum == 0) /* got line one instead, correct db_idx */ | |
2658 db_idx = -1; /* careful, it is negative! */ | |
2659 else | |
2660 db_idx = lnum - buf->b_ml.ml_locked_low; | |
2661 /* get line count before the insertion */ | |
2662 line_count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low; | |
2663 | |
2664 dp = (DATA_BL *)(hp->bh_data); | |
2665 | |
2666 /* | |
2667 * If | |
2668 * - there is not enough room in the current block | |
2669 * - appending to the last line in the block | |
2670 * - not appending to the last line in the file | |
2671 * insert in front of the next block. | |
2672 */ | |
2673 if ((int)dp->db_free < space_needed && db_idx == line_count - 1 | |
2674 && lnum < buf->b_ml.ml_line_count) | |
2675 { | |
2676 /* | |
2677 * Now that the line is not going to be inserted in the block that we | |
2678 * expected, the line count has to be adjusted in the pointer blocks | |
2679 * by using ml_locked_lineadd. | |
2680 */ | |
2681 --(buf->b_ml.ml_locked_lineadd); | |
2682 --(buf->b_ml.ml_locked_high); | |
2683 if ((hp = ml_find_line(buf, lnum + 1, ML_INSERT)) == NULL) | |
2684 return FAIL; | |
2685 | |
2686 db_idx = -1; /* careful, it is negative! */ | |
2687 /* get line count before the insertion */ | |
2688 line_count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low; | |
2689 CHECK(buf->b_ml.ml_locked_low != lnum + 1, "locked_low != lnum + 1"); | |
2690 | |
2691 dp = (DATA_BL *)(hp->bh_data); | |
2692 } | |
2693 | |
2694 ++buf->b_ml.ml_line_count; | |
2695 | |
2696 if ((int)dp->db_free >= space_needed) /* enough room in data block */ | |
2697 { | |
2698 /* | |
2699 * Insert new line in existing data block, or in data block allocated above. | |
2700 */ | |
2701 dp->db_txt_start -= len; | |
2702 dp->db_free -= space_needed; | |
2703 ++(dp->db_line_count); | |
2704 | |
2705 /* | |
2706 * move the text of the lines that follow to the front | |
2707 * adjust the indexes of the lines that follow | |
2708 */ | |
2709 if (line_count > db_idx + 1) /* if there are following lines */ | |
2710 { | |
2711 /* | |
2712 * Offset is the start of the previous line. | |
2713 * This will become the character just after the new line. | |
2714 */ | |
2715 if (db_idx < 0) | |
2716 offset = dp->db_txt_end; | |
2717 else | |
2718 offset = ((dp->db_index[db_idx]) & DB_INDEX_MASK); | |
2719 mch_memmove((char *)dp + dp->db_txt_start, | |
2720 (char *)dp + dp->db_txt_start + len, | |
2721 (size_t)(offset - (dp->db_txt_start + len))); | |
2722 for (i = line_count - 1; i > db_idx; --i) | |
2723 dp->db_index[i + 1] = dp->db_index[i] - len; | |
2724 dp->db_index[db_idx + 1] = offset - len; | |
2725 } | |
2726 else /* add line at the end */ | |
2727 dp->db_index[db_idx + 1] = dp->db_txt_start; | |
2728 | |
2729 /* | |
2730 * copy the text into the block | |
2731 */ | |
2732 mch_memmove((char *)dp + dp->db_index[db_idx + 1], line, (size_t)len); | |
2733 if (mark) | |
2734 dp->db_index[db_idx + 1] |= DB_MARKED; | |
2735 | |
2736 /* | |
2737 * Mark the block dirty. | |
2738 */ | |
2739 buf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
2740 if (!newfile) | |
2741 buf->b_ml.ml_flags |= ML_LOCKED_POS; | |
2742 } | |
2743 else /* not enough space in data block */ | |
2744 { | |
2745 /* | |
2746 * If there is not enough room we have to create a new data block and copy some | |
2747 * lines into it. | |
2748 * Then we have to insert an entry in the pointer block. | |
2749 * If this pointer block also is full, we go up another block, and so on, up | |
2750 * to the root if necessary. | |
2751 * The line counts in the pointer blocks have already been adjusted by | |
2752 * ml_find_line(). | |
2753 */ | |
2754 long line_count_left, line_count_right; | |
2755 int page_count_left, page_count_right; | |
2756 bhdr_T *hp_left; | |
2757 bhdr_T *hp_right; | |
2758 bhdr_T *hp_new; | |
2759 int lines_moved; | |
2760 int data_moved = 0; /* init to shut up gcc */ | |
2761 int total_moved = 0; /* init to shut up gcc */ | |
2762 DATA_BL *dp_right, *dp_left; | |
2763 int stack_idx; | |
2764 int in_left; | |
2765 int lineadd; | |
2766 blocknr_T bnum_left, bnum_right; | |
2767 linenr_T lnum_left, lnum_right; | |
2768 int pb_idx; | |
2769 PTR_BL *pp_new; | |
2770 | |
2771 /* | |
2772 * We are going to allocate a new data block. Depending on the | |
2773 * situation it will be put to the left or right of the existing | |
2774 * block. If possible we put the new line in the left block and move | |
2775 * the lines after it to the right block. Otherwise the new line is | |
2776 * also put in the right block. This method is more efficient when | |
2777 * inserting a lot of lines at one place. | |
2778 */ | |
2779 if (db_idx < 0) /* left block is new, right block is existing */ | |
2780 { | |
2781 lines_moved = 0; | |
2782 in_left = TRUE; | |
2783 /* space_needed does not change */ | |
2784 } | |
2785 else /* left block is existing, right block is new */ | |
2786 { | |
2787 lines_moved = line_count - db_idx - 1; | |
2788 if (lines_moved == 0) | |
2789 in_left = FALSE; /* put new line in right block */ | |
2790 /* space_needed does not change */ | |
2791 else | |
2792 { | |
2793 data_moved = ((dp->db_index[db_idx]) & DB_INDEX_MASK) - | |
2794 dp->db_txt_start; | |
2795 total_moved = data_moved + lines_moved * INDEX_SIZE; | |
2796 if ((int)dp->db_free + total_moved >= space_needed) | |
2797 { | |
2798 in_left = TRUE; /* put new line in left block */ | |
2799 space_needed = total_moved; | |
2800 } | |
2801 else | |
2802 { | |
2803 in_left = FALSE; /* put new line in right block */ | |
2804 space_needed += total_moved; | |
2805 } | |
2806 } | |
2807 } | |
2808 | |
2809 page_count = ((space_needed + HEADER_SIZE) + page_size - 1) / page_size; | |
2810 if ((hp_new = ml_new_data(mfp, newfile, page_count)) == NULL) | |
2811 { | |
2812 /* correct line counts in pointer blocks */ | |
2813 --(buf->b_ml.ml_locked_lineadd); | |
2814 --(buf->b_ml.ml_locked_high); | |
2815 return FAIL; | |
2816 } | |
2817 if (db_idx < 0) /* left block is new */ | |
2818 { | |
2819 hp_left = hp_new; | |
2820 hp_right = hp; | |
2821 line_count_left = 0; | |
2822 line_count_right = line_count; | |
2823 } | |
2824 else /* right block is new */ | |
2825 { | |
2826 hp_left = hp; | |
2827 hp_right = hp_new; | |
2828 line_count_left = line_count; | |
2829 line_count_right = 0; | |
2830 } | |
2831 dp_right = (DATA_BL *)(hp_right->bh_data); | |
2832 dp_left = (DATA_BL *)(hp_left->bh_data); | |
2833 bnum_left = hp_left->bh_bnum; | |
2834 bnum_right = hp_right->bh_bnum; | |
2835 page_count_left = hp_left->bh_page_count; | |
2836 page_count_right = hp_right->bh_page_count; | |
2837 | |
2838 /* | |
2839 * May move the new line into the right/new block. | |
2840 */ | |
2841 if (!in_left) | |
2842 { | |
2843 dp_right->db_txt_start -= len; | |
2844 dp_right->db_free -= len + INDEX_SIZE; | |
2845 dp_right->db_index[0] = dp_right->db_txt_start; | |
2846 if (mark) | |
2847 dp_right->db_index[0] |= DB_MARKED; | |
2848 | |
2849 mch_memmove((char *)dp_right + dp_right->db_txt_start, | |
2850 line, (size_t)len); | |
2851 ++line_count_right; | |
2852 } | |
2853 /* | |
2854 * may move lines from the left/old block to the right/new one. | |
2855 */ | |
2856 if (lines_moved) | |
2857 { | |
2858 /* | |
2859 */ | |
2860 dp_right->db_txt_start -= data_moved; | |
2861 dp_right->db_free -= total_moved; | |
2862 mch_memmove((char *)dp_right + dp_right->db_txt_start, | |
2863 (char *)dp_left + dp_left->db_txt_start, | |
2864 (size_t)data_moved); | |
2865 offset = dp_right->db_txt_start - dp_left->db_txt_start; | |
2866 dp_left->db_txt_start += data_moved; | |
2867 dp_left->db_free += total_moved; | |
2868 | |
2869 /* | |
2870 * update indexes in the new block | |
2871 */ | |
2872 for (to = line_count_right, from = db_idx + 1; | |
2873 from < line_count_left; ++from, ++to) | |
2874 dp_right->db_index[to] = dp->db_index[from] + offset; | |
2875 line_count_right += lines_moved; | |
2876 line_count_left -= lines_moved; | |
2877 } | |
2878 | |
2879 /* | |
2880 * May move the new line into the left (old or new) block. | |
2881 */ | |
2882 if (in_left) | |
2883 { | |
2884 dp_left->db_txt_start -= len; | |
2885 dp_left->db_free -= len + INDEX_SIZE; | |
2886 dp_left->db_index[line_count_left] = dp_left->db_txt_start; | |
2887 if (mark) | |
2888 dp_left->db_index[line_count_left] |= DB_MARKED; | |
2889 mch_memmove((char *)dp_left + dp_left->db_txt_start, | |
2890 line, (size_t)len); | |
2891 ++line_count_left; | |
2892 } | |
2893 | |
2894 if (db_idx < 0) /* left block is new */ | |
2895 { | |
2896 lnum_left = lnum + 1; | |
2897 lnum_right = 0; | |
2898 } | |
2899 else /* right block is new */ | |
2900 { | |
2901 lnum_left = 0; | |
2902 if (in_left) | |
2903 lnum_right = lnum + 2; | |
2904 else | |
2905 lnum_right = lnum + 1; | |
2906 } | |
2907 dp_left->db_line_count = line_count_left; | |
2908 dp_right->db_line_count = line_count_right; | |
2909 | |
2910 /* | |
2911 * release the two data blocks | |
2912 * The new one (hp_new) already has a correct blocknumber. | |
2913 * The old one (hp, in ml_locked) gets a positive blocknumber if | |
2914 * we changed it and we are not editing a new file. | |
2915 */ | |
2916 if (lines_moved || in_left) | |
2917 buf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
2918 if (!newfile && db_idx >= 0 && in_left) | |
2919 buf->b_ml.ml_flags |= ML_LOCKED_POS; | |
2920 mf_put(mfp, hp_new, TRUE, FALSE); | |
2921 | |
2922 /* | |
2923 * flush the old data block | |
2924 * set ml_locked_lineadd to 0, because the updating of the | |
2925 * pointer blocks is done below | |
2926 */ | |
2927 lineadd = buf->b_ml.ml_locked_lineadd; | |
2928 buf->b_ml.ml_locked_lineadd = 0; | |
2929 ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush data block */ | |
2930 | |
2931 /* | |
2932 * update pointer blocks for the new data block | |
2933 */ | |
2934 for (stack_idx = buf->b_ml.ml_stack_top - 1; stack_idx >= 0; | |
2935 --stack_idx) | |
2936 { | |
2937 ip = &(buf->b_ml.ml_stack[stack_idx]); | |
2938 pb_idx = ip->ip_index; | |
2939 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
2940 return FAIL; | |
2941 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
2942 if (pp->pb_id != PTR_ID) | |
2943 { | |
10359
66f1b5bf3fa6
commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
2944 IEMSG(_("E317: pointer block id wrong 3")); |
7 | 2945 mf_put(mfp, hp, FALSE, FALSE); |
2946 return FAIL; | |
2947 } | |
2948 /* | |
2949 * TODO: If the pointer block is full and we are adding at the end | |
2950 * try to insert in front of the next block | |
2951 */ | |
2952 /* block not full, add one entry */ | |
2953 if (pp->pb_count < pp->pb_count_max) | |
2954 { | |
2955 if (pb_idx + 1 < (int)pp->pb_count) | |
2956 mch_memmove(&pp->pb_pointer[pb_idx + 2], | |
2957 &pp->pb_pointer[pb_idx + 1], | |
2958 (size_t)(pp->pb_count - pb_idx - 1) * sizeof(PTR_EN)); | |
2959 ++pp->pb_count; | |
2960 pp->pb_pointer[pb_idx].pe_line_count = line_count_left; | |
2961 pp->pb_pointer[pb_idx].pe_bnum = bnum_left; | |
2962 pp->pb_pointer[pb_idx].pe_page_count = page_count_left; | |
2963 pp->pb_pointer[pb_idx + 1].pe_line_count = line_count_right; | |
2964 pp->pb_pointer[pb_idx + 1].pe_bnum = bnum_right; | |
2965 pp->pb_pointer[pb_idx + 1].pe_page_count = page_count_right; | |
2966 | |
2967 if (lnum_left != 0) | |
2968 pp->pb_pointer[pb_idx].pe_old_lnum = lnum_left; | |
2969 if (lnum_right != 0) | |
2970 pp->pb_pointer[pb_idx + 1].pe_old_lnum = lnum_right; | |
2971 | |
2972 mf_put(mfp, hp, TRUE, FALSE); | |
2973 buf->b_ml.ml_stack_top = stack_idx + 1; /* truncate stack */ | |
2974 | |
2975 if (lineadd) | |
2976 { | |
2977 --(buf->b_ml.ml_stack_top); | |
1167 | 2978 /* fix line count for rest of blocks in the stack */ |
7 | 2979 ml_lineadd(buf, lineadd); |
2980 /* fix stack itself */ | |
2981 buf->b_ml.ml_stack[buf->b_ml.ml_stack_top].ip_high += | |
2982 lineadd; | |
2983 ++(buf->b_ml.ml_stack_top); | |
2984 } | |
2985 | |
2986 /* | |
2987 * We are finished, break the loop here. | |
2988 */ | |
2989 break; | |
2990 } | |
2991 else /* pointer block full */ | |
2992 { | |
2993 /* | |
2994 * split the pointer block | |
2995 * allocate a new pointer block | |
2996 * move some of the pointer into the new block | |
2997 * prepare for updating the parent block | |
2998 */ | |
2999 for (;;) /* do this twice when splitting block 1 */ | |
3000 { | |
3001 hp_new = ml_new_ptr(mfp); | |
3002 if (hp_new == NULL) /* TODO: try to fix tree */ | |
3003 return FAIL; | |
3004 pp_new = (PTR_BL *)(hp_new->bh_data); | |
3005 | |
3006 if (hp->bh_bnum != 1) | |
3007 break; | |
3008 | |
3009 /* | |
3010 * if block 1 becomes full the tree is given an extra level | |
3011 * The pointers from block 1 are moved into the new block. | |
3012 * block 1 is updated to point to the new block | |
3013 * then continue to split the new block | |
3014 */ | |
3015 mch_memmove(pp_new, pp, (size_t)page_size); | |
3016 pp->pb_count = 1; | |
3017 pp->pb_pointer[0].pe_bnum = hp_new->bh_bnum; | |
3018 pp->pb_pointer[0].pe_line_count = buf->b_ml.ml_line_count; | |
3019 pp->pb_pointer[0].pe_old_lnum = 1; | |
3020 pp->pb_pointer[0].pe_page_count = 1; | |
3021 mf_put(mfp, hp, TRUE, FALSE); /* release block 1 */ | |
3022 hp = hp_new; /* new block is to be split */ | |
3023 pp = pp_new; | |
3024 CHECK(stack_idx != 0, _("stack_idx should be 0")); | |
3025 ip->ip_index = 0; | |
3026 ++stack_idx; /* do block 1 again later */ | |
3027 } | |
3028 /* | |
3029 * move the pointers after the current one to the new block | |
3030 * If there are none, the new entry will be in the new block. | |
3031 */ | |
3032 total_moved = pp->pb_count - pb_idx - 1; | |
3033 if (total_moved) | |
3034 { | |
3035 mch_memmove(&pp_new->pb_pointer[0], | |
3036 &pp->pb_pointer[pb_idx + 1], | |
3037 (size_t)(total_moved) * sizeof(PTR_EN)); | |
3038 pp_new->pb_count = total_moved; | |
3039 pp->pb_count -= total_moved - 1; | |
3040 pp->pb_pointer[pb_idx + 1].pe_bnum = bnum_right; | |
3041 pp->pb_pointer[pb_idx + 1].pe_line_count = line_count_right; | |
3042 pp->pb_pointer[pb_idx + 1].pe_page_count = page_count_right; | |
3043 if (lnum_right) | |
3044 pp->pb_pointer[pb_idx + 1].pe_old_lnum = lnum_right; | |
3045 } | |
3046 else | |
3047 { | |
3048 pp_new->pb_count = 1; | |
3049 pp_new->pb_pointer[0].pe_bnum = bnum_right; | |
3050 pp_new->pb_pointer[0].pe_line_count = line_count_right; | |
3051 pp_new->pb_pointer[0].pe_page_count = page_count_right; | |
3052 pp_new->pb_pointer[0].pe_old_lnum = lnum_right; | |
3053 } | |
3054 pp->pb_pointer[pb_idx].pe_bnum = bnum_left; | |
3055 pp->pb_pointer[pb_idx].pe_line_count = line_count_left; | |
3056 pp->pb_pointer[pb_idx].pe_page_count = page_count_left; | |
3057 if (lnum_left) | |
3058 pp->pb_pointer[pb_idx].pe_old_lnum = lnum_left; | |
3059 lnum_left = 0; | |
3060 lnum_right = 0; | |
3061 | |
3062 /* | |
3063 * recompute line counts | |
3064 */ | |
3065 line_count_right = 0; | |
3066 for (i = 0; i < (int)pp_new->pb_count; ++i) | |
3067 line_count_right += pp_new->pb_pointer[i].pe_line_count; | |
3068 line_count_left = 0; | |
3069 for (i = 0; i < (int)pp->pb_count; ++i) | |
3070 line_count_left += pp->pb_pointer[i].pe_line_count; | |
3071 | |
3072 bnum_left = hp->bh_bnum; | |
3073 bnum_right = hp_new->bh_bnum; | |
3074 page_count_left = 1; | |
3075 page_count_right = 1; | |
3076 mf_put(mfp, hp, TRUE, FALSE); | |
3077 mf_put(mfp, hp_new, TRUE, FALSE); | |
3078 } | |
3079 } | |
3080 | |
3081 /* | |
3082 * Safety check: fallen out of for loop? | |
3083 */ | |
3084 if (stack_idx < 0) | |
3085 { | |
10359
66f1b5bf3fa6
commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
3086 IEMSG(_("E318: Updated too many blocks?")); |
7 | 3087 buf->b_ml.ml_stack_top = 0; /* invalidate stack */ |
3088 } | |
3089 } | |
3090 | |
3091 #ifdef FEAT_BYTEOFF | |
3092 /* The line was inserted below 'lnum' */ | |
3093 ml_updatechunk(buf, lnum + 1, (long)len, ML_CHNK_ADDLINE); | |
3094 #endif | |
3095 #ifdef FEAT_NETBEANS_INTG | |
2210 | 3096 if (netbeans_active()) |
7 | 3097 { |
3098 if (STRLEN(line) > 0) | |
835 | 3099 netbeans_inserted(buf, lnum+1, (colnr_T)0, line, (int)STRLEN(line)); |
34 | 3100 netbeans_inserted(buf, lnum+1, (colnr_T)STRLEN(line), |
7 | 3101 (char_u *)"\n", 1); |
3102 } | |
3103 #endif | |
8493
caed4b2d305f
commit https://github.com/vim/vim/commit/509ce2a558e7e0c03242e32e844255af52f1c821
Christian Brabandt <cb@256bit.org>
parents:
8422
diff
changeset
|
3104 #ifdef FEAT_JOB_CHANNEL |
8422
5d2c84be23b5
commit https://github.com/vim/vim/commit/99ef06296f3c37490511c03786a2c8672e015c56
Christian Brabandt <cb@256bit.org>
parents:
8212
diff
changeset
|
3105 if (buf->b_write_to_channel) |
5d2c84be23b5
commit https://github.com/vim/vim/commit/99ef06296f3c37490511c03786a2c8672e015c56
Christian Brabandt <cb@256bit.org>
parents:
8212
diff
changeset
|
3106 channel_write_new_lines(buf); |
5d2c84be23b5
commit https://github.com/vim/vim/commit/99ef06296f3c37490511c03786a2c8672e015c56
Christian Brabandt <cb@256bit.org>
parents:
8212
diff
changeset
|
3107 #endif |
5d2c84be23b5
commit https://github.com/vim/vim/commit/99ef06296f3c37490511c03786a2c8672e015c56
Christian Brabandt <cb@256bit.org>
parents:
8212
diff
changeset
|
3108 |
7 | 3109 return OK; |
3110 } | |
3111 | |
3112 /* | |
625 | 3113 * Replace line lnum, with buffering, in current buffer. |
7 | 3114 * |
720 | 3115 * If "copy" is TRUE, make a copy of the line, otherwise the line has been |
7 | 3116 * copied to allocated memory already. |
3117 * | |
3118 * Check: The caller of this function should probably also call | |
3119 * changed_lines(), unless update_screen(NOT_VALID) is used. | |
3120 * | |
3121 * return FAIL for failure, OK otherwise | |
3122 */ | |
3123 int | |
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parents:
7803
diff
changeset
|
3124 ml_replace(linenr_T lnum, char_u *line, int copy) |
7 | 3125 { |
3126 if (line == NULL) /* just checking... */ | |
3127 return FAIL; | |
3128 | |
3129 /* When starting up, we might still need to create the memfile */ | |
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|
3130 if (curbuf->b_ml.ml_mfp == NULL && open_buffer(FALSE, NULL, 0) == FAIL) |
7 | 3131 return FAIL; |
3132 | |
3133 if (copy && (line = vim_strsave(line)) == NULL) /* allocate memory */ | |
3134 return FAIL; | |
3135 #ifdef FEAT_NETBEANS_INTG | |
2210 | 3136 if (netbeans_active()) |
7 | 3137 { |
3138 netbeans_removed(curbuf, lnum, 0, (long)STRLEN(ml_get(lnum))); | |
835 | 3139 netbeans_inserted(curbuf, lnum, 0, line, (int)STRLEN(line)); |
7 | 3140 } |
3141 #endif | |
3142 if (curbuf->b_ml.ml_line_lnum != lnum) /* other line buffered */ | |
3143 ml_flush_line(curbuf); /* flush it */ | |
3144 else if (curbuf->b_ml.ml_flags & ML_LINE_DIRTY) /* same line allocated */ | |
3145 vim_free(curbuf->b_ml.ml_line_ptr); /* free it */ | |
3146 curbuf->b_ml.ml_line_ptr = line; | |
3147 curbuf->b_ml.ml_line_lnum = lnum; | |
3148 curbuf->b_ml.ml_flags = (curbuf->b_ml.ml_flags | ML_LINE_DIRTY) & ~ML_EMPTY; | |
3149 | |
3150 return OK; | |
3151 } | |
3152 | |
3153 /* | |
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|
3154 * Delete line "lnum" in the current buffer. |
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diff
changeset
|
3155 * When "message" is TRUE may give a "No lines in buffer" message. |
7 | 3156 * |
3157 * Check: The caller of this function should probably also call | |
3158 * deleted_lines() after this. | |
3159 * | |
3160 * return FAIL for failure, OK otherwise | |
3161 */ | |
3162 int | |
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parents:
7803
diff
changeset
|
3163 ml_delete(linenr_T lnum, int message) |
7 | 3164 { |
3165 ml_flush_line(curbuf); | |
3166 return ml_delete_int(curbuf, lnum, message); | |
3167 } | |
3168 | |
3169 static int | |
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parents:
7803
diff
changeset
|
3170 ml_delete_int(buf_T *buf, linenr_T lnum, int message) |
7 | 3171 { |
3172 bhdr_T *hp; | |
3173 memfile_T *mfp; | |
3174 DATA_BL *dp; | |
3175 PTR_BL *pp; | |
3176 infoptr_T *ip; | |
3177 int count; /* number of entries in block */ | |
3178 int idx; | |
3179 int stack_idx; | |
3180 int text_start; | |
3181 int line_start; | |
3182 long line_size; | |
3183 int i; | |
3184 | |
3185 if (lnum < 1 || lnum > buf->b_ml.ml_line_count) | |
3186 return FAIL; | |
3187 | |
3188 if (lowest_marked && lowest_marked > lnum) | |
3189 lowest_marked--; | |
3190 | |
3191 /* | |
3192 * If the file becomes empty the last line is replaced by an empty line. | |
3193 */ | |
3194 if (buf->b_ml.ml_line_count == 1) /* file becomes empty */ | |
3195 { | |
3196 if (message | |
3197 #ifdef FEAT_NETBEANS_INTG | |
3198 && !netbeansSuppressNoLines | |
3199 #endif | |
3200 ) | |
680 | 3201 set_keep_msg((char_u *)_(no_lines_msg), 0); |
3202 | |
4352 | 3203 /* FEAT_BYTEOFF already handled in there, don't worry 'bout it below */ |
7 | 3204 i = ml_replace((linenr_T)1, (char_u *)"", TRUE); |
3205 buf->b_ml.ml_flags |= ML_EMPTY; | |
3206 | |
3207 return i; | |
3208 } | |
3209 | |
3210 /* | |
3211 * find the data block containing the line | |
3212 * This also fills the stack with the blocks from the root to the data block | |
3213 * This also releases any locked block. | |
3214 */ | |
3215 mfp = buf->b_ml.ml_mfp; | |
3216 if (mfp == NULL) | |
3217 return FAIL; | |
3218 | |
3219 if ((hp = ml_find_line(buf, lnum, ML_DELETE)) == NULL) | |
3220 return FAIL; | |
3221 | |
3222 dp = (DATA_BL *)(hp->bh_data); | |
3223 /* compute line count before the delete */ | |
3224 count = (long)(buf->b_ml.ml_locked_high) | |
3225 - (long)(buf->b_ml.ml_locked_low) + 2; | |
3226 idx = lnum - buf->b_ml.ml_locked_low; | |
3227 | |
3228 --buf->b_ml.ml_line_count; | |
3229 | |
3230 line_start = ((dp->db_index[idx]) & DB_INDEX_MASK); | |
3231 if (idx == 0) /* first line in block, text at the end */ | |
3232 line_size = dp->db_txt_end - line_start; | |
3233 else | |
3234 line_size = ((dp->db_index[idx - 1]) & DB_INDEX_MASK) - line_start; | |
3235 | |
3236 #ifdef FEAT_NETBEANS_INTG | |
2210 | 3237 if (netbeans_active()) |
34 | 3238 netbeans_removed(buf, lnum, 0, (long)line_size); |
7 | 3239 #endif |
3240 | |
3241 /* | |
3242 * special case: If there is only one line in the data block it becomes empty. | |
3243 * Then we have to remove the entry, pointing to this data block, from the | |
3244 * pointer block. If this pointer block also becomes empty, we go up another | |
3245 * block, and so on, up to the root if necessary. | |
3246 * The line counts in the pointer blocks have already been adjusted by | |
3247 * ml_find_line(). | |
3248 */ | |
3249 if (count == 1) | |
3250 { | |
3251 mf_free(mfp, hp); /* free the data block */ | |
3252 buf->b_ml.ml_locked = NULL; | |
3253 | |
2823 | 3254 for (stack_idx = buf->b_ml.ml_stack_top - 1; stack_idx >= 0; |
3255 --stack_idx) | |
7 | 3256 { |
3257 buf->b_ml.ml_stack_top = 0; /* stack is invalid when failing */ | |
3258 ip = &(buf->b_ml.ml_stack[stack_idx]); | |
3259 idx = ip->ip_index; | |
3260 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
3261 return FAIL; | |
3262 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
3263 if (pp->pb_id != PTR_ID) | |
3264 { | |
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10042
diff
changeset
|
3265 IEMSG(_("E317: pointer block id wrong 4")); |
7 | 3266 mf_put(mfp, hp, FALSE, FALSE); |
3267 return FAIL; | |
3268 } | |
3269 count = --(pp->pb_count); | |
3270 if (count == 0) /* the pointer block becomes empty! */ | |
3271 mf_free(mfp, hp); | |
3272 else | |
3273 { | |
3274 if (count != idx) /* move entries after the deleted one */ | |
3275 mch_memmove(&pp->pb_pointer[idx], &pp->pb_pointer[idx + 1], | |
3276 (size_t)(count - idx) * sizeof(PTR_EN)); | |
3277 mf_put(mfp, hp, TRUE, FALSE); | |
3278 | |
3279 buf->b_ml.ml_stack_top = stack_idx; /* truncate stack */ | |
1167 | 3280 /* fix line count for rest of blocks in the stack */ |
3281 if (buf->b_ml.ml_locked_lineadd != 0) | |
7 | 3282 { |
3283 ml_lineadd(buf, buf->b_ml.ml_locked_lineadd); | |
3284 buf->b_ml.ml_stack[buf->b_ml.ml_stack_top].ip_high += | |
1167 | 3285 buf->b_ml.ml_locked_lineadd; |
7 | 3286 } |
3287 ++(buf->b_ml.ml_stack_top); | |
3288 | |
3289 break; | |
3290 } | |
3291 } | |
3292 CHECK(stack_idx < 0, _("deleted block 1?")); | |
3293 } | |
3294 else | |
3295 { | |
3296 /* | |
3297 * delete the text by moving the next lines forwards | |
3298 */ | |
3299 text_start = dp->db_txt_start; | |
3300 mch_memmove((char *)dp + text_start + line_size, | |
3301 (char *)dp + text_start, (size_t)(line_start - text_start)); | |
3302 | |
3303 /* | |
3304 * delete the index by moving the next indexes backwards | |
3305 * Adjust the indexes for the text movement. | |
3306 */ | |
3307 for (i = idx; i < count - 1; ++i) | |
3308 dp->db_index[i] = dp->db_index[i + 1] + line_size; | |
3309 | |
3310 dp->db_free += line_size + INDEX_SIZE; | |
3311 dp->db_txt_start += line_size; | |
3312 --(dp->db_line_count); | |
3313 | |
3314 /* | |
3315 * mark the block dirty and make sure it is in the file (for recovery) | |
3316 */ | |
3317 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
3318 } | |
3319 | |
3320 #ifdef FEAT_BYTEOFF | |
3321 ml_updatechunk(buf, lnum, line_size, ML_CHNK_DELLINE); | |
3322 #endif | |
3323 return OK; | |
3324 } | |
3325 | |
3326 /* | |
3327 * set the B_MARKED flag for line 'lnum' | |
3328 */ | |
3329 void | |
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parents:
7803
diff
changeset
|
3330 ml_setmarked(linenr_T lnum) |
7 | 3331 { |
3332 bhdr_T *hp; | |
3333 DATA_BL *dp; | |
3334 /* invalid line number */ | |
3335 if (lnum < 1 || lnum > curbuf->b_ml.ml_line_count | |
3336 || curbuf->b_ml.ml_mfp == NULL) | |
3337 return; /* give error message? */ | |
3338 | |
3339 if (lowest_marked == 0 || lowest_marked > lnum) | |
3340 lowest_marked = lnum; | |
3341 | |
3342 /* | |
3343 * find the data block containing the line | |
3344 * This also fills the stack with the blocks from the root to the data block | |
3345 * This also releases any locked block. | |
3346 */ | |
3347 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
3348 return; /* give error message? */ | |
3349 | |
3350 dp = (DATA_BL *)(hp->bh_data); | |
3351 dp->db_index[lnum - curbuf->b_ml.ml_locked_low] |= DB_MARKED; | |
3352 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
3353 } | |
3354 | |
3355 /* | |
3356 * find the first line with its B_MARKED flag set | |
3357 */ | |
3358 linenr_T | |
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diff
changeset
|
3359 ml_firstmarked(void) |
7 | 3360 { |
3361 bhdr_T *hp; | |
3362 DATA_BL *dp; | |
3363 linenr_T lnum; | |
3364 int i; | |
3365 | |
3366 if (curbuf->b_ml.ml_mfp == NULL) | |
3367 return (linenr_T) 0; | |
3368 | |
3369 /* | |
3370 * The search starts with lowest_marked line. This is the last line where | |
3371 * a mark was found, adjusted by inserting/deleting lines. | |
3372 */ | |
3373 for (lnum = lowest_marked; lnum <= curbuf->b_ml.ml_line_count; ) | |
3374 { | |
3375 /* | |
3376 * Find the data block containing the line. | |
3377 * This also fills the stack with the blocks from the root to the data | |
3378 * block This also releases any locked block. | |
3379 */ | |
3380 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
3381 return (linenr_T)0; /* give error message? */ | |
3382 | |
3383 dp = (DATA_BL *)(hp->bh_data); | |
3384 | |
3385 for (i = lnum - curbuf->b_ml.ml_locked_low; | |
3386 lnum <= curbuf->b_ml.ml_locked_high; ++i, ++lnum) | |
3387 if ((dp->db_index[i]) & DB_MARKED) | |
3388 { | |
3389 (dp->db_index[i]) &= DB_INDEX_MASK; | |
3390 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
3391 lowest_marked = lnum + 1; | |
3392 return lnum; | |
3393 } | |
3394 } | |
3395 | |
3396 return (linenr_T) 0; | |
3397 } | |
3398 | |
3399 /* | |
3400 * clear all DB_MARKED flags | |
3401 */ | |
3402 void | |
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parents:
7803
diff
changeset
|
3403 ml_clearmarked(void) |
7 | 3404 { |
3405 bhdr_T *hp; | |
3406 DATA_BL *dp; | |
3407 linenr_T lnum; | |
3408 int i; | |
3409 | |
3410 if (curbuf->b_ml.ml_mfp == NULL) /* nothing to do */ | |
3411 return; | |
3412 | |
3413 /* | |
3414 * The search starts with line lowest_marked. | |
3415 */ | |
3416 for (lnum = lowest_marked; lnum <= curbuf->b_ml.ml_line_count; ) | |
3417 { | |
3418 /* | |
3419 * Find the data block containing the line. | |
3420 * This also fills the stack with the blocks from the root to the data | |
3421 * block and releases any locked block. | |
3422 */ | |
3423 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
3424 return; /* give error message? */ | |
3425 | |
3426 dp = (DATA_BL *)(hp->bh_data); | |
3427 | |
3428 for (i = lnum - curbuf->b_ml.ml_locked_low; | |
3429 lnum <= curbuf->b_ml.ml_locked_high; ++i, ++lnum) | |
3430 if ((dp->db_index[i]) & DB_MARKED) | |
3431 { | |
3432 (dp->db_index[i]) &= DB_INDEX_MASK; | |
3433 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
3434 } | |
3435 } | |
3436 | |
3437 lowest_marked = 0; | |
3438 return; | |
3439 } | |
3440 | |
3441 /* | |
3442 * flush ml_line if necessary | |
3443 */ | |
3444 static void | |
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7803
diff
changeset
|
3445 ml_flush_line(buf_T *buf) |
7 | 3446 { |
3447 bhdr_T *hp; | |
3448 DATA_BL *dp; | |
3449 linenr_T lnum; | |
3450 char_u *new_line; | |
3451 char_u *old_line; | |
3452 colnr_T new_len; | |
3453 int old_len; | |
3454 int extra; | |
3455 int idx; | |
3456 int start; | |
3457 int count; | |
3458 int i; | |
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diff
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|
3459 static int entered = FALSE; |
7 | 3460 |
3461 if (buf->b_ml.ml_line_lnum == 0 || buf->b_ml.ml_mfp == NULL) | |
3462 return; /* nothing to do */ | |
3463 | |
3464 if (buf->b_ml.ml_flags & ML_LINE_DIRTY) | |
3465 { | |
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diff
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|
3466 /* This code doesn't work recursively, but Netbeans may call back here |
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diff
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|
3467 * when obtaining the cursor position. */ |
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diff
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|
3468 if (entered) |
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|
3469 return; |
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|
3470 entered = TRUE; |
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|
3471 |
7 | 3472 lnum = buf->b_ml.ml_line_lnum; |
3473 new_line = buf->b_ml.ml_line_ptr; | |
3474 | |
3475 hp = ml_find_line(buf, lnum, ML_FIND); | |
3476 if (hp == NULL) | |
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parents:
10042
diff
changeset
|
3477 IEMSGN(_("E320: Cannot find line %ld"), lnum); |
7 | 3478 else |
3479 { | |
3480 dp = (DATA_BL *)(hp->bh_data); | |
3481 idx = lnum - buf->b_ml.ml_locked_low; | |
3482 start = ((dp->db_index[idx]) & DB_INDEX_MASK); | |
3483 old_line = (char_u *)dp + start; | |
3484 if (idx == 0) /* line is last in block */ | |
3485 old_len = dp->db_txt_end - start; | |
3486 else /* text of previous line follows */ | |
3487 old_len = (dp->db_index[idx - 1] & DB_INDEX_MASK) - start; | |
3488 new_len = (colnr_T)STRLEN(new_line) + 1; | |
3489 extra = new_len - old_len; /* negative if lines gets smaller */ | |
3490 | |
3491 /* | |
3492 * if new line fits in data block, replace directly | |
3493 */ | |
3494 if ((int)dp->db_free >= extra) | |
3495 { | |
3496 /* if the length changes and there are following lines */ | |
3497 count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low + 1; | |
3498 if (extra != 0 && idx < count - 1) | |
3499 { | |
3500 /* move text of following lines */ | |
3501 mch_memmove((char *)dp + dp->db_txt_start - extra, | |
3502 (char *)dp + dp->db_txt_start, | |
3503 (size_t)(start - dp->db_txt_start)); | |
3504 | |
3505 /* adjust pointers of this and following lines */ | |
3506 for (i = idx + 1; i < count; ++i) | |
3507 dp->db_index[i] -= extra; | |
3508 } | |
3509 dp->db_index[idx] -= extra; | |
3510 | |
3511 /* adjust free space */ | |
3512 dp->db_free -= extra; | |
3513 dp->db_txt_start -= extra; | |
3514 | |
3515 /* copy new line into the data block */ | |
3516 mch_memmove(old_line - extra, new_line, (size_t)new_len); | |
3517 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
3518 #ifdef FEAT_BYTEOFF | |
3519 /* The else case is already covered by the insert and delete */ | |
3520 ml_updatechunk(buf, lnum, (long)extra, ML_CHNK_UPDLINE); | |
3521 #endif | |
3522 } | |
3523 else | |
3524 { | |
3525 /* | |
3526 * Cannot do it in one data block: Delete and append. | |
3527 * Append first, because ml_delete_int() cannot delete the | |
3528 * last line in a buffer, which causes trouble for a buffer | |
3529 * that has only one line. | |
3530 * Don't forget to copy the mark! | |
3531 */ | |
3532 /* How about handling errors??? */ | |
3533 (void)ml_append_int(buf, lnum, new_line, new_len, FALSE, | |
3534 (dp->db_index[idx] & DB_MARKED)); | |
3535 (void)ml_delete_int(buf, lnum, FALSE); | |
3536 } | |
3537 } | |
3538 vim_free(new_line); | |
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3539 |
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|
3540 entered = FALSE; |
7 | 3541 } |
3542 | |
3543 buf->b_ml.ml_line_lnum = 0; | |
3544 } | |
3545 | |
3546 /* | |
3547 * create a new, empty, data block | |
3548 */ | |
3549 static bhdr_T * | |
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parents:
7803
diff
changeset
|
3550 ml_new_data(memfile_T *mfp, int negative, int page_count) |
7 | 3551 { |
3552 bhdr_T *hp; | |
3553 DATA_BL *dp; | |
3554 | |
3555 if ((hp = mf_new(mfp, negative, page_count)) == NULL) | |
3556 return NULL; | |
3557 | |
3558 dp = (DATA_BL *)(hp->bh_data); | |
3559 dp->db_id = DATA_ID; | |
3560 dp->db_txt_start = dp->db_txt_end = page_count * mfp->mf_page_size; | |
3561 dp->db_free = dp->db_txt_start - HEADER_SIZE; | |
3562 dp->db_line_count = 0; | |
3563 | |
3564 return hp; | |
3565 } | |
3566 | |
3567 /* | |
3568 * create a new, empty, pointer block | |
3569 */ | |
3570 static bhdr_T * | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3571 ml_new_ptr(memfile_T *mfp) |
7 | 3572 { |
3573 bhdr_T *hp; | |
3574 PTR_BL *pp; | |
3575 | |
3576 if ((hp = mf_new(mfp, FALSE, 1)) == NULL) | |
3577 return NULL; | |
3578 | |
3579 pp = (PTR_BL *)(hp->bh_data); | |
3580 pp->pb_id = PTR_ID; | |
3581 pp->pb_count = 0; | |
2240
6b4879aea261
Add test for gettabvar() and settabvar().
Bram Moolenaar <bram@vim.org>
parents:
2221
diff
changeset
|
3582 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
|
3583 / sizeof(PTR_EN) + 1); |
7 | 3584 |
3585 return hp; | |
3586 } | |
3587 | |
3588 /* | |
3589 * lookup line 'lnum' in a memline | |
3590 * | |
3591 * action: if ML_DELETE or ML_INSERT the line count is updated while searching | |
3592 * if ML_FLUSH only flush a locked block | |
3593 * if ML_FIND just find the line | |
3594 * | |
3595 * If the block was found it is locked and put in ml_locked. | |
3596 * The stack is updated to lead to the locked block. The ip_high field in | |
3597 * the stack is updated to reflect the last line in the block AFTER the | |
3598 * insert or delete, also if the pointer block has not been updated yet. But | |
1167 | 3599 * if ml_locked != NULL ml_locked_lineadd must be added to ip_high. |
7 | 3600 * |
3601 * return: NULL for failure, pointer to block header otherwise | |
3602 */ | |
3603 static bhdr_T * | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3604 ml_find_line(buf_T *buf, linenr_T lnum, int action) |
7 | 3605 { |
3606 DATA_BL *dp; | |
3607 PTR_BL *pp; | |
3608 infoptr_T *ip; | |
3609 bhdr_T *hp; | |
3610 memfile_T *mfp; | |
3611 linenr_T t; | |
3612 blocknr_T bnum, bnum2; | |
3613 int dirty; | |
3614 linenr_T low, high; | |
3615 int top; | |
3616 int page_count; | |
3617 int idx; | |
3618 | |
3619 mfp = buf->b_ml.ml_mfp; | |
3620 | |
3621 /* | |
3622 * If there is a locked block check if the wanted line is in it. | |
3623 * If not, flush and release the locked block. | |
3624 * Don't do this for ML_INSERT_SAME, because the stack need to be updated. | |
3625 * Don't do this for ML_FLUSH, because we want to flush the locked block. | |
1066 | 3626 * Don't do this when 'swapfile' is reset, we want to load all the blocks. |
7 | 3627 */ |
3628 if (buf->b_ml.ml_locked) | |
3629 { | |
1066 | 3630 if (ML_SIMPLE(action) |
3631 && buf->b_ml.ml_locked_low <= lnum | |
3632 && buf->b_ml.ml_locked_high >= lnum | |
3633 && !mf_dont_release) | |
7 | 3634 { |
1066 | 3635 /* remember to update pointer blocks and stack later */ |
7 | 3636 if (action == ML_INSERT) |
3637 { | |
3638 ++(buf->b_ml.ml_locked_lineadd); | |
3639 ++(buf->b_ml.ml_locked_high); | |
3640 } | |
3641 else if (action == ML_DELETE) | |
3642 { | |
3643 --(buf->b_ml.ml_locked_lineadd); | |
3644 --(buf->b_ml.ml_locked_high); | |
3645 } | |
3646 return (buf->b_ml.ml_locked); | |
3647 } | |
3648 | |
3649 mf_put(mfp, buf->b_ml.ml_locked, buf->b_ml.ml_flags & ML_LOCKED_DIRTY, | |
3650 buf->b_ml.ml_flags & ML_LOCKED_POS); | |
3651 buf->b_ml.ml_locked = NULL; | |
3652 | |
1167 | 3653 /* |
3654 * If lines have been added or deleted in the locked block, need to | |
3655 * update the line count in pointer blocks. | |
3656 */ | |
3657 if (buf->b_ml.ml_locked_lineadd != 0) | |
7 | 3658 ml_lineadd(buf, buf->b_ml.ml_locked_lineadd); |
3659 } | |
3660 | |
3661 if (action == ML_FLUSH) /* nothing else to do */ | |
3662 return NULL; | |
3663 | |
3664 bnum = 1; /* start at the root of the tree */ | |
3665 page_count = 1; | |
3666 low = 1; | |
3667 high = buf->b_ml.ml_line_count; | |
3668 | |
3669 if (action == ML_FIND) /* first try stack entries */ | |
3670 { | |
3671 for (top = buf->b_ml.ml_stack_top - 1; top >= 0; --top) | |
3672 { | |
3673 ip = &(buf->b_ml.ml_stack[top]); | |
3674 if (ip->ip_low <= lnum && ip->ip_high >= lnum) | |
3675 { | |
3676 bnum = ip->ip_bnum; | |
3677 low = ip->ip_low; | |
3678 high = ip->ip_high; | |
3679 buf->b_ml.ml_stack_top = top; /* truncate stack at prev entry */ | |
3680 break; | |
3681 } | |
3682 } | |
3683 if (top < 0) | |
3684 buf->b_ml.ml_stack_top = 0; /* not found, start at the root */ | |
3685 } | |
3686 else /* ML_DELETE or ML_INSERT */ | |
3687 buf->b_ml.ml_stack_top = 0; /* start at the root */ | |
3688 | |
3689 /* | |
3690 * search downwards in the tree until a data block is found | |
3691 */ | |
3692 for (;;) | |
3693 { | |
3694 if ((hp = mf_get(mfp, bnum, page_count)) == NULL) | |
3695 goto error_noblock; | |
3696 | |
3697 /* | |
3698 * update high for insert/delete | |
3699 */ | |
3700 if (action == ML_INSERT) | |
3701 ++high; | |
3702 else if (action == ML_DELETE) | |
3703 --high; | |
3704 | |
3705 dp = (DATA_BL *)(hp->bh_data); | |
3706 if (dp->db_id == DATA_ID) /* data block */ | |
3707 { | |
3708 buf->b_ml.ml_locked = hp; | |
3709 buf->b_ml.ml_locked_low = low; | |
3710 buf->b_ml.ml_locked_high = high; | |
3711 buf->b_ml.ml_locked_lineadd = 0; | |
3712 buf->b_ml.ml_flags &= ~(ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
3713 return hp; | |
3714 } | |
3715 | |
3716 pp = (PTR_BL *)(dp); /* must be pointer block */ | |
3717 if (pp->pb_id != PTR_ID) | |
3718 { | |
10359
66f1b5bf3fa6
commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
3719 IEMSG(_("E317: pointer block id wrong")); |
7 | 3720 goto error_block; |
3721 } | |
3722 | |
3723 if ((top = ml_add_stack(buf)) < 0) /* add new entry to stack */ | |
3724 goto error_block; | |
3725 ip = &(buf->b_ml.ml_stack[top]); | |
3726 ip->ip_bnum = bnum; | |
3727 ip->ip_low = low; | |
3728 ip->ip_high = high; | |
3729 ip->ip_index = -1; /* index not known yet */ | |
3730 | |
3731 dirty = FALSE; | |
3732 for (idx = 0; idx < (int)pp->pb_count; ++idx) | |
3733 { | |
3734 t = pp->pb_pointer[idx].pe_line_count; | |
3735 CHECK(t == 0, _("pe_line_count is zero")); | |
3736 if ((low += t) > lnum) | |
3737 { | |
3738 ip->ip_index = idx; | |
3739 bnum = pp->pb_pointer[idx].pe_bnum; | |
3740 page_count = pp->pb_pointer[idx].pe_page_count; | |
3741 high = low - 1; | |
3742 low -= t; | |
3743 | |
3744 /* | |
3745 * a negative block number may have been changed | |
3746 */ | |
3747 if (bnum < 0) | |
3748 { | |
3749 bnum2 = mf_trans_del(mfp, bnum); | |
3750 if (bnum != bnum2) | |
3751 { | |
3752 bnum = bnum2; | |
3753 pp->pb_pointer[idx].pe_bnum = bnum; | |
3754 dirty = TRUE; | |
3755 } | |
3756 } | |
3757 | |
3758 break; | |
3759 } | |
3760 } | |
3761 if (idx >= (int)pp->pb_count) /* past the end: something wrong! */ | |
3762 { | |
3763 if (lnum > buf->b_ml.ml_line_count) | |
10359
66f1b5bf3fa6
commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
3764 IEMSGN(_("E322: line number out of range: %ld past the end"), |
7 | 3765 lnum - buf->b_ml.ml_line_count); |
3766 | |
3767 else | |
10359
66f1b5bf3fa6
commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
3768 IEMSGN(_("E323: line count wrong in block %ld"), bnum); |
7 | 3769 goto error_block; |
3770 } | |
3771 if (action == ML_DELETE) | |
3772 { | |
3773 pp->pb_pointer[idx].pe_line_count--; | |
3774 dirty = TRUE; | |
3775 } | |
3776 else if (action == ML_INSERT) | |
3777 { | |
3778 pp->pb_pointer[idx].pe_line_count++; | |
3779 dirty = TRUE; | |
3780 } | |
3781 mf_put(mfp, hp, dirty, FALSE); | |
3782 } | |
3783 | |
3784 error_block: | |
3785 mf_put(mfp, hp, FALSE, FALSE); | |
3786 error_noblock: | |
2267 | 3787 /* |
3788 * If action is ML_DELETE or ML_INSERT we have to correct the tree for | |
3789 * the incremented/decremented line counts, because there won't be a line | |
3790 * inserted/deleted after all. | |
3791 */ | |
7 | 3792 if (action == ML_DELETE) |
3793 ml_lineadd(buf, 1); | |
3794 else if (action == ML_INSERT) | |
3795 ml_lineadd(buf, -1); | |
3796 buf->b_ml.ml_stack_top = 0; | |
3797 return NULL; | |
3798 } | |
3799 | |
3800 /* | |
3801 * add an entry to the info pointer stack | |
3802 * | |
3803 * return -1 for failure, number of the new entry otherwise | |
3804 */ | |
3805 static int | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3806 ml_add_stack(buf_T *buf) |
7 | 3807 { |
3808 int top; | |
3809 infoptr_T *newstack; | |
3810 | |
3811 top = buf->b_ml.ml_stack_top; | |
3812 | |
2267 | 3813 /* may have to increase the stack size */ |
7 | 3814 if (top == buf->b_ml.ml_stack_size) |
3815 { | |
2267 | 3816 CHECK(top > 0, _("Stack size increases")); /* more than 5 levels??? */ |
7 | 3817 |
3818 newstack = (infoptr_T *)alloc((unsigned)sizeof(infoptr_T) * | |
3819 (buf->b_ml.ml_stack_size + STACK_INCR)); | |
3820 if (newstack == NULL) | |
3821 return -1; | |
6989 | 3822 if (top > 0) |
3823 mch_memmove(newstack, buf->b_ml.ml_stack, | |
1624 | 3824 (size_t)top * sizeof(infoptr_T)); |
7 | 3825 vim_free(buf->b_ml.ml_stack); |
3826 buf->b_ml.ml_stack = newstack; | |
3827 buf->b_ml.ml_stack_size += STACK_INCR; | |
3828 } | |
3829 | |
3830 buf->b_ml.ml_stack_top++; | |
3831 return top; | |
3832 } | |
3833 | |
3834 /* | |
3835 * Update the pointer blocks on the stack for inserted/deleted lines. | |
3836 * The stack itself is also updated. | |
3837 * | |
3838 * When a insert/delete line action fails, the line is not inserted/deleted, | |
3839 * but the pointer blocks have already been updated. That is fixed here by | |
3840 * walking through the stack. | |
3841 * | |
3842 * Count is the number of lines added, negative if lines have been deleted. | |
3843 */ | |
3844 static void | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3845 ml_lineadd(buf_T *buf, int count) |
7 | 3846 { |
3847 int idx; | |
3848 infoptr_T *ip; | |
3849 PTR_BL *pp; | |
3850 memfile_T *mfp = buf->b_ml.ml_mfp; | |
3851 bhdr_T *hp; | |
3852 | |
3853 for (idx = buf->b_ml.ml_stack_top - 1; idx >= 0; --idx) | |
3854 { | |
3855 ip = &(buf->b_ml.ml_stack[idx]); | |
3856 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
3857 break; | |
3858 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
3859 if (pp->pb_id != PTR_ID) | |
3860 { | |
3861 mf_put(mfp, hp, FALSE, FALSE); | |
10359
66f1b5bf3fa6
commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
3862 IEMSG(_("E317: pointer block id wrong 2")); |
7 | 3863 break; |
3864 } | |
3865 pp->pb_pointer[ip->ip_index].pe_line_count += count; | |
3866 ip->ip_high += count; | |
3867 mf_put(mfp, hp, TRUE, FALSE); | |
3868 } | |
3869 } | |
3870 | |
2214
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
3871 #if defined(HAVE_READLINK) || defined(PROTO) |
594 | 3872 /* |
3873 * Resolve a symlink in the last component of a file name. | |
3874 * Note that f_resolve() does it for every part of the path, we don't do that | |
3875 * here. | |
3876 * If it worked returns OK and the resolved link in "buf[MAXPATHL]". | |
3877 * Otherwise returns FAIL. | |
3878 */ | |
2214
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
3879 int |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3880 resolve_symlink(char_u *fname, char_u *buf) |
594 | 3881 { |
3882 char_u tmp[MAXPATHL]; | |
3883 int ret; | |
3884 int depth = 0; | |
3885 | |
3886 if (fname == NULL) | |
3887 return FAIL; | |
3888 | |
3889 /* Put the result so far in tmp[], starting with the original name. */ | |
3890 vim_strncpy(tmp, fname, MAXPATHL - 1); | |
3891 | |
3892 for (;;) | |
3893 { | |
3894 /* Limit symlink depth to 100, catch recursive loops. */ | |
3895 if (++depth == 100) | |
3896 { | |
3897 EMSG2(_("E773: Symlink loop for \"%s\""), fname); | |
3898 return FAIL; | |
3899 } | |
3900 | |
3901 ret = readlink((char *)tmp, (char *)buf, MAXPATHL - 1); | |
3902 if (ret <= 0) | |
3903 { | |
619 | 3904 if (errno == EINVAL || errno == ENOENT) |
594 | 3905 { |
619 | 3906 /* Found non-symlink or not existing file, stop here. |
1855 | 3907 * When at the first level use the unmodified name, skip the |
594 | 3908 * call to vim_FullName(). */ |
3909 if (depth == 1) | |
3910 return FAIL; | |
3911 | |
3912 /* Use the resolved name in tmp[]. */ | |
3913 break; | |
3914 } | |
3915 | |
3916 /* There must be some error reading links, use original name. */ | |
3917 return FAIL; | |
3918 } | |
3919 buf[ret] = NUL; | |
3920 | |
3921 /* | |
3922 * Check whether the symlink is relative or absolute. | |
3923 * If it's relative, build a new path based on the directory | |
3924 * portion of the filename (if any) and the path the symlink | |
3925 * points to. | |
3926 */ | |
3927 if (mch_isFullName(buf)) | |
3928 STRCPY(tmp, buf); | |
3929 else | |
3930 { | |
3931 char_u *tail; | |
3932 | |
3933 tail = gettail(tmp); | |
3934 if (STRLEN(tail) + STRLEN(buf) >= MAXPATHL) | |
3935 return FAIL; | |
3936 STRCPY(tail, buf); | |
3937 } | |
3938 } | |
3939 | |
3940 /* | |
3941 * Try to resolve the full name of the file so that the swapfile name will | |
3942 * be consistent even when opening a relative symlink from different | |
3943 * working directories. | |
3944 */ | |
3945 return vim_FullName(tmp, buf, MAXPATHL, TRUE); | |
3946 } | |
3947 #endif | |
3948 | |
7 | 3949 /* |
460 | 3950 * Make swap file name out of the file name and a directory name. |
3951 * Returns pointer to allocated memory or NULL. | |
7 | 3952 */ |
460 | 3953 char_u * |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3954 makeswapname( |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3955 char_u *fname, |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3956 char_u *ffname UNUSED, |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3957 buf_T *buf, |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3958 char_u *dir_name) |
7 | 3959 { |
3960 char_u *r, *s; | |
2145
de0e7ca61893
updated for version 7.2.427
Bram Moolenaar <bram@zimbu.org>
parents:
2108
diff
changeset
|
3961 char_u *fname_res = fname; |
594 | 3962 #ifdef HAVE_READLINK |
3963 char_u fname_buf[MAXPATHL]; | |
3964 #endif | |
7 | 3965 |
3966 #if defined(UNIX) || defined(WIN3264) /* Need _very_ long file names */ | |
10996
2f041b367cd9
patch 8.0.0387: compiler warnings
Christian Brabandt <cb@256bit.org>
parents:
10952
diff
changeset
|
3967 int len = (int)STRLEN(dir_name); |
10896
d513b653f5d0
patch 8.0.0337: invalid memory access in :recover command
Christian Brabandt <cb@256bit.org>
parents:
10889
diff
changeset
|
3968 |
d513b653f5d0
patch 8.0.0337: invalid memory access in :recover command
Christian Brabandt <cb@256bit.org>
parents:
10889
diff
changeset
|
3969 s = dir_name + len; |
d513b653f5d0
patch 8.0.0337: invalid memory access in :recover command
Christian Brabandt <cb@256bit.org>
parents:
10889
diff
changeset
|
3970 if (after_pathsep(dir_name, s) && len > 1 && s[-1] == s[-2]) |
7 | 3971 { /* Ends with '//', Use Full path */ |
3972 r = NULL; | |
460 | 3973 if ((s = make_percent_swname(dir_name, fname)) != NULL) |
7 | 3974 { |
3975 r = modname(s, (char_u *)".swp", FALSE); | |
3976 vim_free(s); | |
3977 } | |
3978 return r; | |
3979 } | |
3980 #endif | |
3981 | |
594 | 3982 #ifdef HAVE_READLINK |
3983 /* Expand symlink in the file name, so that we put the swap file with the | |
3984 * actual file instead of with the symlink. */ | |
3985 if (resolve_symlink(fname, fname_buf) == OK) | |
3986 fname_res = fname_buf; | |
3987 #endif | |
3988 | |
7 | 3989 r = buf_modname( |
3990 (buf->b_p_sn || buf->b_shortname), | |
594 | 3991 fname_res, |
7 | 3992 (char_u *) |
2823 | 3993 #if defined(VMS) |
7 | 3994 "_swp", |
3995 #else | |
3996 ".swp", | |
3997 #endif | |
3998 /* Prepend a '.' to the swap file name for the current directory. */ | |
8212
05b88224cea1
commit https://github.com/vim/vim/commit/48e330aff911be1c798c88a973af6437a8141fce
Christian Brabandt <cb@256bit.org>
parents:
7961
diff
changeset
|
3999 dir_name[0] == '.' && dir_name[1] == NUL); |
7 | 4000 if (r == NULL) /* out of memory */ |
4001 return NULL; | |
4002 | |
4003 s = get_file_in_dir(r, dir_name); | |
4004 vim_free(r); | |
4005 return s; | |
4006 } | |
4007 | |
4008 /* | |
4009 * Get file name to use for swap file or backup file. | |
4010 * Use the name of the edited file "fname" and an entry in the 'dir' or 'bdir' | |
4011 * option "dname". | |
4012 * - If "dname" is ".", return "fname" (swap file in dir of file). | |
4013 * - If "dname" starts with "./", insert "dname" in "fname" (swap file | |
4014 * relative to dir of file). | |
4015 * - Otherwise, prepend "dname" to the tail of "fname" (swap file in specific | |
4016 * dir). | |
4017 * | |
4018 * The return value is an allocated string and can be NULL. | |
4019 */ | |
4020 char_u * | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4021 get_file_in_dir( |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4022 char_u *fname, |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4023 char_u *dname) /* don't use "dirname", it is a global for Alpha */ |
7 | 4024 { |
4025 char_u *t; | |
4026 char_u *tail; | |
4027 char_u *retval; | |
4028 int save_char; | |
4029 | |
4030 tail = gettail(fname); | |
4031 | |
4032 if (dname[0] == '.' && dname[1] == NUL) | |
4033 retval = vim_strsave(fname); | |
4034 else if (dname[0] == '.' && vim_ispathsep(dname[1])) | |
4035 { | |
4036 if (tail == fname) /* no path before file name */ | |
4037 retval = concat_fnames(dname + 2, tail, TRUE); | |
4038 else | |
4039 { | |
4040 save_char = *tail; | |
4041 *tail = NUL; | |
4042 t = concat_fnames(fname, dname + 2, TRUE); | |
4043 *tail = save_char; | |
4044 if (t == NULL) /* out of memory */ | |
4045 retval = NULL; | |
4046 else | |
4047 { | |
4048 retval = concat_fnames(t, tail, TRUE); | |
4049 vim_free(t); | |
4050 } | |
4051 } | |
4052 } | |
4053 else | |
4054 retval = concat_fnames(dname, tail, TRUE); | |
4055 | |
5432 | 4056 #ifdef WIN3264 |
4057 if (retval != NULL) | |
11127
506f5d8b7d8b
patch 8.0.0451: some macros are in lower case
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parents:
10996
diff
changeset
|
4058 for (t = gettail(retval); *t != NUL; MB_PTR_ADV(t)) |
5432 | 4059 if (*t == ':') |
4060 *t = '%'; | |
4061 #endif | |
4062 | |
7 | 4063 return retval; |
4064 } | |
4065 | |
7803
37c929c4a073
commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
Christian Brabandt <cb@256bit.org>
parents:
7410
diff
changeset
|
4066 static void attention_message(buf_T *buf, char_u *fname); |
580 | 4067 |
4068 /* | |
4069 * Print the ATTENTION message: info about an existing swap file. | |
4070 */ | |
4071 static void | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4072 attention_message( |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4073 buf_T *buf, /* buffer being edited */ |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4074 char_u *fname) /* swap file name */ |
580 | 4075 { |
9387
f094d4085014
commit https://github.com/vim/vim/commit/8767f52fbfd4f053ce00a978227c95f1d7d323fe
Christian Brabandt <cb@256bit.org>
parents:
9295
diff
changeset
|
4076 stat_T st; |
580 | 4077 time_t x, sx; |
1001 | 4078 char *p; |
580 | 4079 |
4080 ++no_wait_return; | |
4081 (void)EMSG(_("E325: ATTENTION")); | |
4082 MSG_PUTS(_("\nFound a swap file by the name \"")); | |
4083 msg_home_replace(fname); | |
4084 MSG_PUTS("\"\n"); | |
4085 sx = swapfile_info(fname); | |
4086 MSG_PUTS(_("While opening file \"")); | |
4087 msg_outtrans(buf->b_fname); | |
4088 MSG_PUTS("\"\n"); | |
4089 if (mch_stat((char *)buf->b_fname, &st) != -1) | |
4090 { | |
4091 MSG_PUTS(_(" dated: ")); | |
4092 x = st.st_mtime; /* Manx C can't do &st.st_mtime */ | |
1001 | 4093 p = ctime(&x); /* includes '\n' */ |
4094 if (p == NULL) | |
4095 MSG_PUTS("(invalid)\n"); | |
4096 else | |
4097 MSG_PUTS(p); | |
580 | 4098 if (sx != 0 && x > sx) |
4099 MSG_PUTS(_(" NEWER than swap file!\n")); | |
4100 } | |
4101 /* Some of these messages are long to allow translation to | |
4102 * other languages. */ | |
7881
e7afe45a202a
commit https://github.com/vim/vim/commit/d9ea9069f5ef5b8b9f9e0d0daecdd124e2dcd818
Christian Brabandt <cb@256bit.org>
parents:
7827
diff
changeset
|
4103 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. Quit, or continue with caution.\n")); |
2703 | 4104 MSG_PUTS(_("(2) An edit session for this file crashed.\n")); |
580 | 4105 MSG_PUTS(_(" If this is the case, use \":recover\" or \"vim -r ")); |
4106 msg_outtrans(buf->b_fname); | |
4107 MSG_PUTS(_("\"\n to recover the changes (see \":help recovery\").\n")); | |
4108 MSG_PUTS(_(" If you did this already, delete the swap file \"")); | |
4109 msg_outtrans(fname); | |
4110 MSG_PUTS(_("\"\n to avoid this message.\n")); | |
4111 cmdline_row = msg_row; | |
4112 --no_wait_return; | |
4113 } | |
4114 | |
13380
69517d67421f
patch 8.0.1564: too many #ifdefs
Christian Brabandt <cb@256bit.org>
parents:
13244
diff
changeset
|
4115 #if defined(FEAT_EVAL) |
580 | 4116 /* |
4117 * Trigger the SwapExists autocommands. | |
4118 * Returns a value for equivalent to do_dialog() (see below): | |
4119 * 0: still need to ask for a choice | |
4120 * 1: open read-only | |
4121 * 2: edit anyway | |
4122 * 3: recover | |
4123 * 4: delete it | |
4124 * 5: quit | |
4125 * 6: abort | |
4126 */ | |
4127 static int | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4128 do_swapexists(buf_T *buf, char_u *fname) |
580 | 4129 { |
4130 set_vim_var_string(VV_SWAPNAME, fname, -1); | |
4131 set_vim_var_string(VV_SWAPCHOICE, NULL, -1); | |
4132 | |
4133 /* Trigger SwapExists autocommands with <afile> set to the file being | |
1856 | 4134 * edited. Disallow changing directory here. */ |
4135 ++allbuf_lock; | |
580 | 4136 apply_autocmds(EVENT_SWAPEXISTS, buf->b_fname, NULL, FALSE, NULL); |
1856 | 4137 --allbuf_lock; |
580 | 4138 |
4139 set_vim_var_string(VV_SWAPNAME, NULL, -1); | |
4140 | |
4141 switch (*get_vim_var_str(VV_SWAPCHOICE)) | |
4142 { | |
4143 case 'o': return 1; | |
4144 case 'e': return 2; | |
4145 case 'r': return 3; | |
4146 case 'd': return 4; | |
4147 case 'q': return 5; | |
4148 case 'a': return 6; | |
4149 } | |
4150 | |
4151 return 0; | |
4152 } | |
4153 #endif | |
4154 | |
7 | 4155 /* |
4156 * Find out what name to use for the swap file for buffer 'buf'. | |
4157 * | |
4158 * Several names are tried to find one that does not exist | |
460 | 4159 * Returns the name in allocated memory or NULL. |
3158 | 4160 * When out of memory "dirp" is set to NULL. |
7 | 4161 * |
4162 * 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
|
4163 * not being able to open the swap or undo file |
1856 | 4164 * Note: May trigger SwapExists autocmd, pointers may change! |
7 | 4165 */ |
4166 static char_u * | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4167 findswapname( |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4168 buf_T *buf, |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4169 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
|
4170 char_u *old_fname) /* don't give warning for this file name */ |
7 | 4171 { |
4172 char_u *fname; | |
4173 int n; | |
4174 char_u *dir_name; | |
4175 #ifdef AMIGA | |
4176 BPTR fh; | |
4177 #endif | |
4178 int r; | |
5432 | 4179 char_u *buf_fname = buf->b_fname; |
7 | 4180 |
8212
05b88224cea1
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Christian Brabandt <cb@256bit.org>
parents:
7961
diff
changeset
|
4181 #if !defined(UNIX) |
7 | 4182 # define CREATE_DUMMY_FILE |
4183 FILE *dummyfd = NULL; | |
4184 | |
5432 | 4185 # ifdef WIN3264 |
4186 if (buf_fname != NULL && !mch_isFullName(buf_fname) | |
4187 && vim_strchr(gettail(buf_fname), ':')) | |
4188 { | |
4189 char_u *t; | |
4190 | |
4191 buf_fname = vim_strsave(buf_fname); | |
4192 if (buf_fname == NULL) | |
4193 buf_fname = buf->b_fname; | |
4194 else | |
11127
506f5d8b7d8b
patch 8.0.0451: some macros are in lower case
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10996
diff
changeset
|
4195 for (t = gettail(buf_fname); *t != NUL; MB_PTR_ADV(t)) |
5432 | 4196 if (*t == ':') |
4197 *t = '%'; | |
4198 } | |
4199 # endif | |
4200 | |
2214
f8222d1f9a73
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Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4201 /* |
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4202 * 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
|
4203 * 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
|
4204 * "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
|
4205 * 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
|
4206 * 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
|
4207 */ |
5432 | 4208 if (!(buf->b_p_sn || buf->b_shortname) && buf_fname != NULL |
4209 && mch_getperm(buf_fname) < 0) | |
4210 dummyfd = mch_fopen((char *)buf_fname, "w"); | |
7 | 4211 #endif |
4212 | |
2214
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Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4213 /* |
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4214 * 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
|
4215 * 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
|
4216 */ |
7 | 4217 dir_name = alloc((unsigned)STRLEN(*dirp) + 1); |
3158 | 4218 if (dir_name == NULL) |
4219 *dirp = NULL; | |
4220 else | |
7 | 4221 (void)copy_option_part(dirp, dir_name, 31000, ","); |
4222 | |
2214
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Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4223 /* |
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4224 * 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
|
4225 */ |
7 | 4226 if (dir_name == NULL) /* out of memory */ |
4227 fname = NULL; | |
4228 else | |
5432 | 4229 fname = makeswapname(buf_fname, buf->b_ffname, buf, dir_name); |
7 | 4230 |
4231 for (;;) | |
4232 { | |
4233 if (fname == NULL) /* must be out of memory */ | |
4234 break; | |
4235 if ((n = (int)STRLEN(fname)) == 0) /* safety check */ | |
4236 { | |
13244
ac42c4b11dbc
patch 8.0.1496: clearing a pointer takes two lines
Christian Brabandt <cb@256bit.org>
parents:
12975
diff
changeset
|
4237 VIM_CLEAR(fname); |
7 | 4238 break; |
4239 } | |
8212
05b88224cea1
commit https://github.com/vim/vim/commit/48e330aff911be1c798c88a973af6437a8141fce
Christian Brabandt <cb@256bit.org>
parents:
7961
diff
changeset
|
4240 #if defined(UNIX) |
7 | 4241 /* |
4242 * Some systems have a MS-DOS compatible filesystem that use 8.3 character | |
4243 * file names. If this is the first try and the swap file name does not fit in | |
4244 * 8.3, detect if this is the case, set shortname and try again. | |
4245 */ | |
4246 if (fname[n - 2] == 'w' && fname[n - 1] == 'p' | |
4247 && !(buf->b_p_sn || buf->b_shortname)) | |
4248 { | |
4249 char_u *tail; | |
4250 char_u *fname2; | |
9387
f094d4085014
commit https://github.com/vim/vim/commit/8767f52fbfd4f053ce00a978227c95f1d7d323fe
Christian Brabandt <cb@256bit.org>
parents:
9295
diff
changeset
|
4251 stat_T s1, s2; |
7 | 4252 int f1, f2; |
4253 int created1 = FALSE, created2 = FALSE; | |
4254 int same = FALSE; | |
4255 | |
4256 /* | |
4257 * Check if swapfile name does not fit in 8.3: | |
4258 * It either contains two dots, is longer than 8 chars, or starts | |
4259 * with a dot. | |
4260 */ | |
5432 | 4261 tail = gettail(buf_fname); |
7 | 4262 if ( vim_strchr(tail, '.') != NULL |
4263 || STRLEN(tail) > (size_t)8 | |
4264 || *gettail(fname) == '.') | |
4265 { | |
4266 fname2 = alloc(n + 2); | |
4267 if (fname2 != NULL) | |
4268 { | |
4269 STRCPY(fname2, fname); | |
4270 /* if fname == "xx.xx.swp", fname2 = "xx.xx.swx" | |
4271 * if fname == ".xx.swp", fname2 = ".xx.swpx" | |
4272 * if fname == "123456789.swp", fname2 = "12345678x.swp" | |
4273 */ | |
4274 if (vim_strchr(tail, '.') != NULL) | |
4275 fname2[n - 1] = 'x'; | |
4276 else if (*gettail(fname) == '.') | |
4277 { | |
4278 fname2[n] = 'x'; | |
4279 fname2[n + 1] = NUL; | |
4280 } | |
4281 else | |
4282 fname2[n - 5] += 1; | |
4283 /* | |
4284 * may need to create the files to be able to use mch_stat() | |
4285 */ | |
4286 f1 = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
4287 if (f1 < 0) | |
4288 { | |
4289 f1 = mch_open_rw((char *)fname, | |
4290 O_RDWR|O_CREAT|O_EXCL|O_EXTRA); | |
4291 created1 = TRUE; | |
4292 } | |
4293 if (f1 >= 0) | |
4294 { | |
4295 f2 = mch_open((char *)fname2, O_RDONLY | O_EXTRA, 0); | |
4296 if (f2 < 0) | |
4297 { | |
4298 f2 = mch_open_rw((char *)fname2, | |
4299 O_RDWR|O_CREAT|O_EXCL|O_EXTRA); | |
4300 created2 = TRUE; | |
4301 } | |
4302 if (f2 >= 0) | |
4303 { | |
4304 /* | |
4305 * Both files exist now. If mch_stat() returns the | |
4306 * same device and inode they are the same file. | |
4307 */ | |
4308 if (mch_fstat(f1, &s1) != -1 | |
4309 && mch_fstat(f2, &s2) != -1 | |
4310 && s1.st_dev == s2.st_dev | |
4311 && s1.st_ino == s2.st_ino) | |
4312 same = TRUE; | |
4313 close(f2); | |
4314 if (created2) | |
4315 mch_remove(fname2); | |
4316 } | |
4317 close(f1); | |
4318 if (created1) | |
4319 mch_remove(fname); | |
4320 } | |
4321 vim_free(fname2); | |
4322 if (same) | |
4323 { | |
4324 buf->b_shortname = TRUE; | |
4325 vim_free(fname); | |
5432 | 4326 fname = makeswapname(buf_fname, buf->b_ffname, |
460 | 4327 buf, dir_name); |
7 | 4328 continue; /* try again with b_shortname set */ |
4329 } | |
4330 } | |
4331 } | |
4332 } | |
4333 #endif | |
4334 /* | |
4335 * check if the swapfile already exists | |
4336 */ | |
4337 if (mch_getperm(fname) < 0) /* it does not exist */ | |
4338 { | |
4339 #ifdef HAVE_LSTAT | |
9387
f094d4085014
commit https://github.com/vim/vim/commit/8767f52fbfd4f053ce00a978227c95f1d7d323fe
Christian Brabandt <cb@256bit.org>
parents:
9295
diff
changeset
|
4340 stat_T sb; |
7 | 4341 |
4342 /* | |
4343 * Extra security check: When a swap file is a symbolic link, this | |
4344 * is most likely a symlink attack. | |
4345 */ | |
4346 if (mch_lstat((char *)fname, &sb) < 0) | |
4347 #else | |
4348 # ifdef AMIGA | |
4349 fh = Open((UBYTE *)fname, (long)MODE_NEWFILE); | |
4350 /* | |
4351 * on the Amiga mch_getperm() will return -1 when the file exists | |
4352 * but is being used by another program. This happens if you edit | |
4353 * a file twice. | |
4354 */ | |
4355 if (fh != (BPTR)NULL) /* can open file, OK */ | |
4356 { | |
4357 Close(fh); | |
4358 mch_remove(fname); | |
4359 break; | |
4360 } | |
4361 if (IoErr() != ERROR_OBJECT_IN_USE | |
4362 && IoErr() != ERROR_OBJECT_EXISTS) | |
4363 # endif | |
4364 #endif | |
4365 break; | |
4366 } | |
4367 | |
4368 /* | |
4369 * A file name equal to old_fname is OK to use. | |
4370 */ | |
4371 if (old_fname != NULL && fnamecmp(fname, old_fname) == 0) | |
4372 break; | |
4373 | |
4374 /* | |
4375 * get here when file already exists | |
4376 */ | |
4377 if (fname[n - 2] == 'w' && fname[n - 1] == 'p') /* first try */ | |
4378 { | |
4379 /* | |
4380 * on MS-DOS compatible filesystems (e.g. messydos) file.doc.swp | |
4381 * and file.doc are the same file. To guess if this problem is | |
4382 * present try if file.doc.swx exists. If it does, we set | |
4383 * buf->b_shortname and try file_doc.swp (dots replaced by | |
4384 * underscores for this file), and try again. If it doesn't we | |
4385 * assume that "file.doc.swp" already exists. | |
4386 */ | |
4387 if (!(buf->b_p_sn || buf->b_shortname)) /* not tried yet */ | |
4388 { | |
4389 fname[n - 1] = 'x'; | |
4390 r = mch_getperm(fname); /* try "file.swx" */ | |
4391 fname[n - 1] = 'p'; | |
4392 if (r >= 0) /* "file.swx" seems to exist */ | |
4393 { | |
4394 buf->b_shortname = TRUE; | |
4395 vim_free(fname); | |
5432 | 4396 fname = makeswapname(buf_fname, buf->b_ffname, |
460 | 4397 buf, dir_name); |
7 | 4398 continue; /* try again with '.' replaced with '_' */ |
4399 } | |
4400 } | |
4401 /* | |
4402 * If we get here the ".swp" file really exists. | |
4403 * Give an error message, unless recovering, no file name, we are | |
4404 * viewing a help file or when the path of the file is different | |
4405 * (happens when all .swp files are in one directory). | |
4406 */ | |
5432 | 4407 if (!recoverymode && buf_fname != NULL |
43 | 4408 && !buf->b_help && !(buf->b_flags & BF_DUMMY)) |
7 | 4409 { |
4410 int fd; | |
4411 struct block0 b0; | |
4412 int differ = FALSE; | |
4413 | |
4414 /* | |
4415 * Try to read block 0 from the swap file to get the original | |
4416 * file name (and inode number). | |
4417 */ | |
4418 fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
4419 if (fd >= 0) | |
4420 { | |
2664 | 4421 if (read_eintr(fd, &b0, sizeof(b0)) == sizeof(b0)) |
7 | 4422 { |
4423 /* | |
39 | 4424 * If the swapfile has the same directory as the |
4425 * buffer don't compare the directory names, they can | |
4426 * have a different mountpoint. | |
7 | 4427 */ |
39 | 4428 if (b0.b0_flags & B0_SAME_DIR) |
4429 { | |
4430 if (fnamecmp(gettail(buf->b_ffname), | |
4431 gettail(b0.b0_fname)) != 0 | |
4432 || !same_directory(fname, buf->b_ffname)) | |
594 | 4433 { |
4434 #ifdef CHECK_INODE | |
4435 /* Symlinks may point to the same file even | |
4436 * when the name differs, need to check the | |
4437 * inode too. */ | |
4438 expand_env(b0.b0_fname, NameBuff, MAXPATHL); | |
4439 if (fnamecmp_ino(buf->b_ffname, NameBuff, | |
4440 char_to_long(b0.b0_ino))) | |
4441 #endif | |
4442 differ = TRUE; | |
4443 } | |
39 | 4444 } |
4445 else | |
4446 { | |
4447 /* | |
4448 * The name in the swap file may be | |
4449 * "~user/path/file". Expand it first. | |
4450 */ | |
4451 expand_env(b0.b0_fname, NameBuff, MAXPATHL); | |
7 | 4452 #ifdef CHECK_INODE |
39 | 4453 if (fnamecmp_ino(buf->b_ffname, NameBuff, |
594 | 4454 char_to_long(b0.b0_ino))) |
39 | 4455 differ = TRUE; |
7 | 4456 #else |
39 | 4457 if (fnamecmp(NameBuff, buf->b_ffname) != 0) |
4458 differ = TRUE; | |
7 | 4459 #endif |
39 | 4460 } |
7 | 4461 } |
4462 close(fd); | |
4463 } | |
4464 | |
4465 /* give the ATTENTION message when there is an old swap file | |
4466 * for the current file, and the buffer was not recovered. */ | |
4467 if (differ == FALSE && !(curbuf->b_flags & BF_RECOVERED) | |
4468 && vim_strchr(p_shm, SHM_ATTENTION) == NULL) | |
4469 { | |
580 | 4470 #if defined(HAS_SWAP_EXISTS_ACTION) |
4471 int choice = 0; | |
4472 #endif | |
7 | 4473 #ifdef CREATE_DUMMY_FILE |
4474 int did_use_dummy = FALSE; | |
4475 | |
4476 /* Avoid getting a warning for the file being created | |
4477 * outside of Vim, it was created at the start of this | |
4478 * function. Delete the file now, because Vim might exit | |
4479 * here if the window is closed. */ | |
4480 if (dummyfd != NULL) | |
4481 { | |
4482 fclose(dummyfd); | |
4483 dummyfd = NULL; | |
5432 | 4484 mch_remove(buf_fname); |
7 | 4485 did_use_dummy = TRUE; |
4486 } | |
4487 #endif | |
4488 | |
9536
b2aada04d84e
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Christian Brabandt <cb@256bit.org>
parents:
9387
diff
changeset
|
4489 #if (defined(UNIX) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)) |
7 | 4490 process_still_running = FALSE; |
4491 #endif | |
13380
69517d67421f
patch 8.0.1564: too many #ifdefs
Christian Brabandt <cb@256bit.org>
parents:
13244
diff
changeset
|
4492 #if defined(FEAT_EVAL) |
580 | 4493 /* |
4494 * If there is an SwapExists autocommand and we can handle | |
4495 * the response, trigger it. It may return 0 to ask the | |
4496 * user anyway. | |
4497 */ | |
4498 if (swap_exists_action != SEA_NONE | |
5432 | 4499 && has_autocmd(EVENT_SWAPEXISTS, buf_fname, buf)) |
580 | 4500 choice = do_swapexists(buf, fname); |
4501 | |
4502 if (choice == 0) | |
4503 #endif | |
7 | 4504 { |
580 | 4505 #ifdef FEAT_GUI |
4506 /* If we are supposed to start the GUI but it wasn't | |
4507 * completely started yet, start it now. This makes | |
4508 * the messages displayed in the Vim window when | |
4509 * loading a session from the .gvimrc file. */ | |
4510 if (gui.starting && !gui.in_use) | |
4511 gui_start(); | |
4512 #endif | |
4513 /* Show info about the existing swap file. */ | |
4514 attention_message(buf, fname); | |
4515 | |
4516 /* We don't want a 'q' typed at the more-prompt | |
4517 * interrupt loading a file. */ | |
4518 got_int = FALSE; | |
7 | 4519 } |
4520 | |
4521 #if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) | |
580 | 4522 if (swap_exists_action != SEA_NONE && choice == 0) |
7 | 4523 { |
4524 char_u *name; | |
4525 | |
4526 name = alloc((unsigned)(STRLEN(fname) | |
4527 + STRLEN(_("Swap file \"")) | |
4528 + STRLEN(_("\" already exists!")) + 5)); | |
4529 if (name != NULL) | |
4530 { | |
4531 STRCPY(name, _("Swap file \"")); | |
4532 home_replace(NULL, fname, name + STRLEN(name), | |
4533 1000, TRUE); | |
4534 STRCAT(name, _("\" already exists!")); | |
4535 } | |
580 | 4536 choice = do_dialog(VIM_WARNING, |
7 | 4537 (char_u *)_("VIM - ATTENTION"), |
4538 name == NULL | |
4539 ? (char_u *)_("Swap file already exists!") | |
4540 : name, | |
9536
b2aada04d84e
commit https://github.com/vim/vim/commit/a06ecab7a5159e744448ace731036f0dc5f87dd4
Christian Brabandt <cb@256bit.org>
parents:
9387
diff
changeset
|
4541 # if defined(UNIX) || defined(VMS) |
7 | 4542 process_still_running |
4543 ? (char_u *)_("&Open Read-Only\n&Edit anyway\n&Recover\n&Quit\n&Abort") : | |
4544 # endif | |
2684 | 4545 (char_u *)_("&Open Read-Only\n&Edit anyway\n&Recover\n&Delete it\n&Quit\n&Abort"), 1, NULL, FALSE); |
580 | 4546 |
9536
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Christian Brabandt <cb@256bit.org>
parents:
9387
diff
changeset
|
4547 # if defined(UNIX) || defined(VMS) |
580 | 4548 if (process_still_running && choice >= 4) |
4549 choice++; /* Skip missing "Delete it" button */ | |
4550 # endif | |
4551 vim_free(name); | |
4552 | |
4553 /* pretend screen didn't scroll, need redraw anyway */ | |
4554 msg_scrolled = 0; | |
4555 redraw_all_later(NOT_VALID); | |
4556 } | |
4557 #endif | |
4558 | |
4559 #if defined(HAS_SWAP_EXISTS_ACTION) | |
4560 if (choice > 0) | |
4561 { | |
4562 switch (choice) | |
7 | 4563 { |
4564 case 1: | |
4565 buf->b_p_ro = TRUE; | |
4566 break; | |
4567 case 2: | |
4568 break; | |
4569 case 3: | |
4570 swap_exists_action = SEA_RECOVER; | |
4571 break; | |
4572 case 4: | |
580 | 4573 mch_remove(fname); |
4574 break; | |
4575 case 5: | |
7 | 4576 swap_exists_action = SEA_QUIT; |
4577 break; | |
580 | 4578 case 6: |
7 | 4579 swap_exists_action = SEA_QUIT; |
4580 got_int = TRUE; | |
4581 break; | |
4582 } | |
4583 | |
4584 /* If the file was deleted this fname can be used. */ | |
4585 if (mch_getperm(fname) < 0) | |
4586 break; | |
4587 } | |
4588 else | |
4589 #endif | |
4590 { | |
4591 MSG_PUTS("\n"); | |
625 | 4592 if (msg_silent == 0) |
4593 /* call wait_return() later */ | |
4594 need_wait_return = TRUE; | |
7 | 4595 } |
4596 | |
4597 #ifdef CREATE_DUMMY_FILE | |
4598 /* Going to try another name, need the dummy file again. */ | |
4599 if (did_use_dummy) | |
5432 | 4600 dummyfd = mch_fopen((char *)buf_fname, "w"); |
7 | 4601 #endif |
4602 } | |
4603 } | |
4604 } | |
4605 | |
4606 /* | |
4607 * Change the ".swp" extension to find another file that can be used. | |
4608 * First decrement the last char: ".swo", ".swn", etc. | |
4609 * If that still isn't enough decrement the last but one char: ".svz" | |
9 | 4610 * Can happen when editing many "No Name" buffers. |
7 | 4611 */ |
4612 if (fname[n - 1] == 'a') /* ".s?a" */ | |
4613 { | |
4614 if (fname[n - 2] == 'a') /* ".saa": tried enough, give up */ | |
4615 { | |
4616 EMSG(_("E326: Too many swap files found")); | |
13244
ac42c4b11dbc
patch 8.0.1496: clearing a pointer takes two lines
Christian Brabandt <cb@256bit.org>
parents:
12975
diff
changeset
|
4617 VIM_CLEAR(fname); |
7 | 4618 break; |
4619 } | |
4620 --fname[n - 2]; /* ".svz", ".suz", etc. */ | |
4621 fname[n - 1] = 'z' + 1; | |
4622 } | |
4623 --fname[n - 1]; /* ".swo", ".swn", etc. */ | |
4624 } | |
4625 | |
4626 vim_free(dir_name); | |
4627 #ifdef CREATE_DUMMY_FILE | |
4628 if (dummyfd != NULL) /* file has been created temporarily */ | |
4629 { | |
4630 fclose(dummyfd); | |
5432 | 4631 mch_remove(buf_fname); |
7 | 4632 } |
4633 #endif | |
5432 | 4634 #ifdef WIN3264 |
4635 if (buf_fname != buf->b_fname) | |
4636 vim_free(buf_fname); | |
4637 #endif | |
7 | 4638 return fname; |
4639 } | |
4640 | |
4641 static int | |
7827
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4642 b0_magic_wrong(ZERO_BL *b0p) |
7 | 4643 { |
4644 return (b0p->b0_magic_long != (long)B0_MAGIC_LONG | |
4645 || b0p->b0_magic_int != (int)B0_MAGIC_INT | |
4646 || b0p->b0_magic_short != (short)B0_MAGIC_SHORT | |
4647 || b0p->b0_magic_char != B0_MAGIC_CHAR); | |
4648 } | |
4649 | |
4650 #ifdef CHECK_INODE | |
4651 /* | |
4652 * Compare current file name with file name from swap file. | |
4653 * Try to use inode numbers when possible. | |
4654 * Return non-zero when files are different. | |
4655 * | |
4656 * When comparing file names a few things have to be taken into consideration: | |
4657 * - When working over a network the full path of a file depends on the host. | |
4658 * We check the inode number if possible. It is not 100% reliable though, | |
4659 * because the device number cannot be used over a network. | |
4660 * - When a file does not exist yet (editing a new file) there is no inode | |
4661 * number. | |
4662 * - The file name in a swap file may not be valid on the current host. The | |
4663 * "~user" form is used whenever possible to avoid this. | |
4664 * | |
4665 * This is getting complicated, let's make a table: | |
4666 * | |
4667 * ino_c ino_s fname_c fname_s differ = | |
4668 * | |
4669 * both files exist -> compare inode numbers: | |
4670 * != 0 != 0 X X ino_c != ino_s | |
4671 * | |
4672 * inode number(s) unknown, file names available -> compare file names | |
4673 * == 0 X OK OK fname_c != fname_s | |
4674 * X == 0 OK OK fname_c != fname_s | |
4675 * | |
4676 * current file doesn't exist, file for swap file exist, file name(s) not | |
4677 * available -> probably different | |
4678 * == 0 != 0 FAIL X TRUE | |
4679 * == 0 != 0 X FAIL TRUE | |
4680 * | |
4681 * current file exists, inode for swap unknown, file name(s) not | |
4682 * available -> probably different | |
4683 * != 0 == 0 FAIL X TRUE | |
4684 * != 0 == 0 X FAIL TRUE | |
4685 * | |
4686 * current file doesn't exist, inode for swap unknown, one file name not | |
4687 * available -> probably different | |
4688 * == 0 == 0 FAIL OK TRUE | |
4689 * == 0 == 0 OK FAIL TRUE | |
4690 * | |
4691 * current file doesn't exist, inode for swap unknown, both file names not | |
13896
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patch 8.0.1819: swap file warning for file with non-existing directory
Christian Brabandt <cb@256bit.org>
parents:
13632
diff
changeset
|
4692 * available -> compare file names |
4d5a1ada407e
patch 8.0.1819: swap file warning for file with non-existing directory
Christian Brabandt <cb@256bit.org>
parents:
13632
diff
changeset
|
4693 * == 0 == 0 FAIL FAIL fname_c != fname_s |
7 | 4694 * |
4695 * Note that when the ino_t is 64 bits, only the last 32 will be used. This | |
4696 * can't be changed without making the block 0 incompatible with 32 bit | |
4697 * versions. | |
4698 */ | |
4699 | |
4700 static int | |
7827
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4701 fnamecmp_ino( |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4702 char_u *fname_c, /* current file name */ |
41789f16d6b2
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4703 char_u *fname_s, /* file name from swap file */ |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4704 long ino_block0) |
7 | 4705 { |
9387
f094d4085014
commit https://github.com/vim/vim/commit/8767f52fbfd4f053ce00a978227c95f1d7d323fe
Christian Brabandt <cb@256bit.org>
parents:
9295
diff
changeset
|
4706 stat_T st; |
7 | 4707 ino_t ino_c = 0; /* ino of current file */ |
4708 ino_t ino_s; /* ino of file from swap file */ | |
4709 char_u buf_c[MAXPATHL]; /* full path of fname_c */ | |
4710 char_u buf_s[MAXPATHL]; /* full path of fname_s */ | |
4711 int retval_c; /* flag: buf_c valid */ | |
4712 int retval_s; /* flag: buf_s valid */ | |
4713 | |
4714 if (mch_stat((char *)fname_c, &st) == 0) | |
4715 ino_c = (ino_t)st.st_ino; | |
4716 | |
4717 /* | |
4718 * First we try to get the inode from the file name, because the inode in | |
4719 * the swap file may be outdated. If that fails (e.g. this path is not | |
4720 * valid on this machine), use the inode from block 0. | |
4721 */ | |
4722 if (mch_stat((char *)fname_s, &st) == 0) | |
4723 ino_s = (ino_t)st.st_ino; | |
4724 else | |
4725 ino_s = (ino_t)ino_block0; | |
4726 | |
4727 if (ino_c && ino_s) | |
4728 return (ino_c != ino_s); | |
4729 | |
4730 /* | |
4731 * One of the inode numbers is unknown, try a forced vim_FullName() and | |
4732 * compare the file names. | |
4733 */ | |
4734 retval_c = vim_FullName(fname_c, buf_c, MAXPATHL, TRUE); | |
4735 retval_s = vim_FullName(fname_s, buf_s, MAXPATHL, TRUE); | |
4736 if (retval_c == OK && retval_s == OK) | |
13896
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Christian Brabandt <cb@256bit.org>
parents:
13632
diff
changeset
|
4737 return STRCMP(buf_c, buf_s) != 0; |
7 | 4738 |
4739 /* | |
4740 * Can't compare inodes or file names, guess that the files are different, | |
13896
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patch 8.0.1819: swap file warning for file with non-existing directory
Christian Brabandt <cb@256bit.org>
parents:
13632
diff
changeset
|
4741 * unless both appear not to exist at all, then compare with the file name |
4d5a1ada407e
patch 8.0.1819: swap file warning for file with non-existing directory
Christian Brabandt <cb@256bit.org>
parents:
13632
diff
changeset
|
4742 * in the swap file. |
7 | 4743 */ |
4744 if (ino_s == 0 && ino_c == 0 && retval_c == FAIL && retval_s == FAIL) | |
13896
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Christian Brabandt <cb@256bit.org>
parents:
13632
diff
changeset
|
4745 return STRCMP(fname_c, fname_s) != 0; |
7 | 4746 return TRUE; |
4747 } | |
4748 #endif /* CHECK_INODE */ | |
4749 | |
4750 /* | |
4751 * Move a long integer into a four byte character array. | |
4752 * Used for machine independency in block zero. | |
4753 */ | |
4754 static void | |
7827
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4755 long_to_char(long n, char_u *s) |
7 | 4756 { |
4757 s[0] = (char_u)(n & 0xff); | |
4758 n = (unsigned)n >> 8; | |
4759 s[1] = (char_u)(n & 0xff); | |
4760 n = (unsigned)n >> 8; | |
4761 s[2] = (char_u)(n & 0xff); | |
4762 n = (unsigned)n >> 8; | |
4763 s[3] = (char_u)(n & 0xff); | |
4764 } | |
4765 | |
4766 static long | |
7827
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4767 char_to_long(char_u *s) |
7 | 4768 { |
4769 long retval; | |
4770 | |
4771 retval = s[3]; | |
4772 retval <<= 8; | |
4773 retval |= s[2]; | |
4774 retval <<= 8; | |
4775 retval |= s[1]; | |
4776 retval <<= 8; | |
4777 retval |= s[0]; | |
4778 | |
4779 return retval; | |
4780 } | |
4781 | |
39 | 4782 /* |
4783 * Set the flags in the first block of the swap file: | |
4784 * - file is modified or not: buf->b_changed | |
4785 * - 'fileformat' | |
4786 * - 'fileencoding' | |
4787 */ | |
7 | 4788 void |
7827
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4789 ml_setflags(buf_T *buf) |
7 | 4790 { |
4791 bhdr_T *hp; | |
4792 ZERO_BL *b0p; | |
4793 | |
4794 if (!buf->b_ml.ml_mfp) | |
4795 return; | |
4796 for (hp = buf->b_ml.ml_mfp->mf_used_last; hp != NULL; hp = hp->bh_prev) | |
4797 { | |
4798 if (hp->bh_bnum == 0) | |
4799 { | |
4800 b0p = (ZERO_BL *)(hp->bh_data); | |
39 | 4801 b0p->b0_dirty = buf->b_changed ? B0_DIRTY : 0; |
4802 b0p->b0_flags = (b0p->b0_flags & ~B0_FF_MASK) | |
4803 | (get_fileformat(buf) + 1); | |
4804 #ifdef FEAT_MBYTE | |
4805 add_b0_fenc(b0p, buf); | |
4806 #endif | |
7 | 4807 hp->bh_flags |= BH_DIRTY; |
4808 mf_sync(buf->b_ml.ml_mfp, MFS_ZERO); | |
4809 break; | |
4810 } | |
4811 } | |
4812 } | |
4813 | |
2267 | 4814 #if defined(FEAT_CRYPT) || defined(PROTO) |
4815 /* | |
4816 * If "data" points to a data block encrypt the text in it and return a copy | |
4817 * in allocated memory. Return NULL when out of memory. | |
4818 * Otherwise return "data". | |
4819 */ | |
4820 char_u * | |
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4821 ml_encrypt_data( |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4822 memfile_T *mfp, |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4823 char_u *data, |
9387
f094d4085014
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Christian Brabandt <cb@256bit.org>
parents:
9295
diff
changeset
|
4824 off_T offset, |
7827
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4825 unsigned size) |
2267 | 4826 { |
4827 DATA_BL *dp = (DATA_BL *)data; | |
4828 char_u *head_end; | |
4829 char_u *text_start; | |
4830 char_u *new_data; | |
4831 int text_len; | |
6122 | 4832 cryptstate_T *state; |
2267 | 4833 |
4834 if (dp->db_id != DATA_ID) | |
4835 return data; | |
4836 | |
6817 | 4837 state = ml_crypt_prepare(mfp, offset, FALSE); |
4838 if (state == NULL) | |
4839 return data; | |
4840 | |
2267 | 4841 new_data = (char_u *)alloc(size); |
4842 if (new_data == NULL) | |
4843 return NULL; | |
4844 head_end = (char_u *)(&dp->db_index[dp->db_line_count]); | |
4845 text_start = (char_u *)dp + dp->db_txt_start; | |
4846 text_len = size - dp->db_txt_start; | |
4847 | |
4848 /* Copy the header and the text. */ | |
4849 mch_memmove(new_data, dp, head_end - (char_u *)dp); | |
4850 | |
4851 /* Encrypt the text. */ | |
6122 | 4852 crypt_encode(state, text_start, text_len, new_data + dp->db_txt_start); |
4853 crypt_free_state(state); | |
2267 | 4854 |
4855 /* Clear the gap. */ | |
4856 if (head_end < text_start) | |
4857 vim_memset(new_data + (head_end - data), 0, text_start - head_end); | |
4858 | |
4859 return new_data; | |
4860 } | |
4861 | |
4862 /* | |
6817 | 4863 * Decrypt the text in "data" if it points to an encrypted data block. |
2267 | 4864 */ |
4865 void | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4866 ml_decrypt_data( |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4867 memfile_T *mfp, |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4868 char_u *data, |
9387
f094d4085014
commit https://github.com/vim/vim/commit/8767f52fbfd4f053ce00a978227c95f1d7d323fe
Christian Brabandt <cb@256bit.org>
parents:
9295
diff
changeset
|
4869 off_T offset, |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4870 unsigned size) |
2267 | 4871 { |
4872 DATA_BL *dp = (DATA_BL *)data; | |
4873 char_u *head_end; | |
4874 char_u *text_start; | |
4875 int text_len; | |
6122 | 4876 cryptstate_T *state; |
2267 | 4877 |
4878 if (dp->db_id == DATA_ID) | |
4879 { | |
4880 head_end = (char_u *)(&dp->db_index[dp->db_line_count]); | |
4881 text_start = (char_u *)dp + dp->db_txt_start; | |
4882 text_len = dp->db_txt_end - dp->db_txt_start; | |
4883 | |
4884 if (head_end > text_start || dp->db_txt_start > size | |
4885 || dp->db_txt_end > size) | |
4886 return; /* data was messed up */ | |
4887 | |
6122 | 4888 state = ml_crypt_prepare(mfp, offset, TRUE); |
6817 | 4889 if (state != NULL) |
4890 { | |
4891 /* Decrypt the text in place. */ | |
4892 crypt_decode_inplace(state, text_start, text_len); | |
4893 crypt_free_state(state); | |
4894 } | |
2267 | 4895 } |
4896 } | |
4897 | |
4898 /* | |
4899 * Prepare for encryption/decryption, using the key, seed and offset. | |
6122 | 4900 * Return an allocated cryptstate_T *. |
2267 | 4901 */ |
6122 | 4902 static cryptstate_T * |
9387
f094d4085014
commit https://github.com/vim/vim/commit/8767f52fbfd4f053ce00a978227c95f1d7d323fe
Christian Brabandt <cb@256bit.org>
parents:
9295
diff
changeset
|
4903 ml_crypt_prepare(memfile_T *mfp, off_T offset, int reading) |
2267 | 4904 { |
4905 buf_T *buf = mfp->mf_buffer; | |
4906 char_u salt[50]; | |
6122 | 4907 int method_nr; |
2267 | 4908 char_u *key; |
4909 char_u *seed; | |
4910 | |
4911 if (reading && mfp->mf_old_key != NULL) | |
4912 { | |
4913 /* Reading back blocks with the previous key/method/seed. */ | |
6122 | 4914 method_nr = mfp->mf_old_cm; |
2267 | 4915 key = mfp->mf_old_key; |
4916 seed = mfp->mf_old_seed; | |
4917 } | |
4918 else | |
4919 { | |
6122 | 4920 method_nr = crypt_get_method_nr(buf); |
2267 | 4921 key = buf->b_p_key; |
4922 seed = mfp->mf_seed; | |
4923 } | |
6817 | 4924 if (*key == NUL) |
4925 return NULL; | |
2267 | 4926 |
6122 | 4927 if (method_nr == CRYPT_M_ZIP) |
2267 | 4928 { |
6122 | 4929 /* For PKzip: Append the offset to the key, so that we use a different |
4930 * key for every block. */ | |
2267 | 4931 vim_snprintf((char *)salt, sizeof(salt), "%s%ld", key, (long)offset); |
6122 | 4932 return crypt_create(method_nr, salt, NULL, 0, NULL, 0); |
2267 | 4933 } |
6122 | 4934 |
4935 /* Using blowfish or better: add salt and seed. We use the byte offset | |
4936 * of the block for the salt. */ | |
4937 vim_snprintf((char *)salt, sizeof(salt), "%ld", (long)offset); | |
4938 return crypt_create(method_nr, key, salt, (int)STRLEN(salt), | |
4939 seed, MF_SEED_LEN); | |
2267 | 4940 } |
4941 | |
4942 #endif | |
4943 | |
4944 | |
7 | 4945 #if defined(FEAT_BYTEOFF) || defined(PROTO) |
4946 | |
4947 #define MLCS_MAXL 800 /* max no of lines in chunk */ | |
4948 #define MLCS_MINL 400 /* should be half of MLCS_MAXL */ | |
4949 | |
4950 /* | |
2407
6bc102a4bff8
Fix memory access to 'cryptmethod' during recovery. (Dominique Pelle)
Bram Moolenaar <bram@vim.org>
parents:
2394
diff
changeset
|
4951 * Keep information for finding byte offset of a line, updtype may be one of: |
7 | 4952 * ML_CHNK_ADDLINE: Add len to parent chunk, possibly splitting it |
4953 * Careful: ML_CHNK_ADDLINE may cause ml_find_line() to be called. | |
4954 * ML_CHNK_DELLINE: Subtract len from parent chunk, possibly deleting it | |
4955 * ML_CHNK_UPDLINE: Add len to parent chunk, as a signed entity. | |
4956 */ | |
4957 static void | |
7827
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4958 ml_updatechunk( |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4959 buf_T *buf, |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4960 linenr_T line, |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4961 long len, |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4962 int updtype) |
7 | 4963 { |
4964 static buf_T *ml_upd_lastbuf = NULL; | |
4965 static linenr_T ml_upd_lastline; | |
4966 static linenr_T ml_upd_lastcurline; | |
4967 static int ml_upd_lastcurix; | |
4968 | |
4969 linenr_T curline = ml_upd_lastcurline; | |
4970 int curix = ml_upd_lastcurix; | |
4971 long size; | |
4972 chunksize_T *curchnk; | |
4973 int rest; | |
4974 bhdr_T *hp; | |
4975 DATA_BL *dp; | |
4976 | |
4977 if (buf->b_ml.ml_usedchunks == -1 || len == 0) | |
4978 return; | |
4979 if (buf->b_ml.ml_chunksize == NULL) | |
4980 { | |
4981 buf->b_ml.ml_chunksize = (chunksize_T *) | |
4982 alloc((unsigned)sizeof(chunksize_T) * 100); | |
4983 if (buf->b_ml.ml_chunksize == NULL) | |
4984 { | |
4985 buf->b_ml.ml_usedchunks = -1; | |
4986 return; | |
4987 } | |
4988 buf->b_ml.ml_numchunks = 100; | |
4989 buf->b_ml.ml_usedchunks = 1; | |
4990 buf->b_ml.ml_chunksize[0].mlcs_numlines = 1; | |
4991 buf->b_ml.ml_chunksize[0].mlcs_totalsize = 1; | |
4992 } | |
4993 | |
4994 if (updtype == ML_CHNK_UPDLINE && buf->b_ml.ml_line_count == 1) | |
4995 { | |
4996 /* | |
4997 * First line in empty buffer from ml_flush_line() -- reset | |
4998 */ | |
4999 buf->b_ml.ml_usedchunks = 1; | |
5000 buf->b_ml.ml_chunksize[0].mlcs_numlines = 1; | |
5001 buf->b_ml.ml_chunksize[0].mlcs_totalsize = | |
5002 (long)STRLEN(buf->b_ml.ml_line_ptr) + 1; | |
5003 return; | |
5004 } | |
5005 | |
5006 /* | |
5007 * Find chunk that our line belongs to, curline will be at start of the | |
5008 * chunk. | |
5009 */ | |
5010 if (buf != ml_upd_lastbuf || line != ml_upd_lastline + 1 | |
5011 || updtype != ML_CHNK_ADDLINE) | |
5012 { | |
5013 for (curline = 1, curix = 0; | |
5014 curix < buf->b_ml.ml_usedchunks - 1 | |
5015 && line >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
5016 curix++) | |
5017 { | |
5018 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
5019 } | |
5020 } | |
5021 else if (line >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines | |
5022 && curix < buf->b_ml.ml_usedchunks - 1) | |
5023 { | |
5024 /* Adjust cached curix & curline */ | |
5025 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
5026 curix++; | |
5027 } | |
5028 curchnk = buf->b_ml.ml_chunksize + curix; | |
5029 | |
5030 if (updtype == ML_CHNK_DELLINE) | |
1030 | 5031 len = -len; |
7 | 5032 curchnk->mlcs_totalsize += len; |
5033 if (updtype == ML_CHNK_ADDLINE) | |
5034 { | |
5035 curchnk->mlcs_numlines++; | |
5036 | |
5037 /* May resize here so we don't have to do it in both cases below */ | |
5038 if (buf->b_ml.ml_usedchunks + 1 >= buf->b_ml.ml_numchunks) | |
5039 { | |
6596 | 5040 chunksize_T *t_chunksize = buf->b_ml.ml_chunksize; |
5041 | |
7 | 5042 buf->b_ml.ml_numchunks = buf->b_ml.ml_numchunks * 3 / 2; |
5043 buf->b_ml.ml_chunksize = (chunksize_T *) | |
5044 vim_realloc(buf->b_ml.ml_chunksize, | |
5045 sizeof(chunksize_T) * buf->b_ml.ml_numchunks); | |
5046 if (buf->b_ml.ml_chunksize == NULL) | |
5047 { | |
5048 /* Hmmmm, Give up on offset for this buffer */ | |
6596 | 5049 vim_free(t_chunksize); |
7 | 5050 buf->b_ml.ml_usedchunks = -1; |
5051 return; | |
5052 } | |
5053 } | |
5054 | |
5055 if (buf->b_ml.ml_chunksize[curix].mlcs_numlines >= MLCS_MAXL) | |
5056 { | |
5057 int count; /* number of entries in block */ | |
5058 int idx; | |
5059 int text_end; | |
5060 int linecnt; | |
5061 | |
5062 mch_memmove(buf->b_ml.ml_chunksize + curix + 1, | |
5063 buf->b_ml.ml_chunksize + curix, | |
5064 (buf->b_ml.ml_usedchunks - curix) * | |
5065 sizeof(chunksize_T)); | |
1855 | 5066 /* Compute length of first half of lines in the split chunk */ |
7 | 5067 size = 0; |
5068 linecnt = 0; | |
5069 while (curline < buf->b_ml.ml_line_count | |
5070 && linecnt < MLCS_MINL) | |
5071 { | |
5072 if ((hp = ml_find_line(buf, curline, ML_FIND)) == NULL) | |
5073 { | |
5074 buf->b_ml.ml_usedchunks = -1; | |
5075 return; | |
5076 } | |
5077 dp = (DATA_BL *)(hp->bh_data); | |
5078 count = (long)(buf->b_ml.ml_locked_high) - | |
5079 (long)(buf->b_ml.ml_locked_low) + 1; | |
5080 idx = curline - buf->b_ml.ml_locked_low; | |
5081 curline = buf->b_ml.ml_locked_high + 1; | |
5082 if (idx == 0)/* first line in block, text at the end */ | |
5083 text_end = dp->db_txt_end; | |
5084 else | |
5085 text_end = ((dp->db_index[idx - 1]) & DB_INDEX_MASK); | |
5086 /* Compute index of last line to use in this MEMLINE */ | |
5087 rest = count - idx; | |
5088 if (linecnt + rest > MLCS_MINL) | |
5089 { | |
5090 idx += MLCS_MINL - linecnt - 1; | |
5091 linecnt = MLCS_MINL; | |
5092 } | |
5093 else | |
5094 { | |
5095 idx = count - 1; | |
5096 linecnt += rest; | |
5097 } | |
5098 size += text_end - ((dp->db_index[idx]) & DB_INDEX_MASK); | |
5099 } | |
5100 buf->b_ml.ml_chunksize[curix].mlcs_numlines = linecnt; | |
5101 buf->b_ml.ml_chunksize[curix + 1].mlcs_numlines -= linecnt; | |
5102 buf->b_ml.ml_chunksize[curix].mlcs_totalsize = size; | |
5103 buf->b_ml.ml_chunksize[curix + 1].mlcs_totalsize -= size; | |
5104 buf->b_ml.ml_usedchunks++; | |
5105 ml_upd_lastbuf = NULL; /* Force recalc of curix & curline */ | |
5106 return; | |
5107 } | |
5108 else if (buf->b_ml.ml_chunksize[curix].mlcs_numlines >= MLCS_MINL | |
5109 && curix == buf->b_ml.ml_usedchunks - 1 | |
5110 && buf->b_ml.ml_line_count - line <= 1) | |
5111 { | |
5112 /* | |
5113 * We are in the last chunk and it is cheap to crate a new one | |
5114 * after this. Do it now to avoid the loop above later on | |
5115 */ | |
5116 curchnk = buf->b_ml.ml_chunksize + curix + 1; | |
5117 buf->b_ml.ml_usedchunks++; | |
5118 if (line == buf->b_ml.ml_line_count) | |
5119 { | |
5120 curchnk->mlcs_numlines = 0; | |
5121 curchnk->mlcs_totalsize = 0; | |
5122 } | |
5123 else | |
5124 { | |
5125 /* | |
5126 * Line is just prior to last, move count for last | |
5127 * This is the common case when loading a new file | |
5128 */ | |
5129 hp = ml_find_line(buf, buf->b_ml.ml_line_count, ML_FIND); | |
5130 if (hp == NULL) | |
5131 { | |
5132 buf->b_ml.ml_usedchunks = -1; | |
5133 return; | |
5134 } | |
5135 dp = (DATA_BL *)(hp->bh_data); | |
5136 if (dp->db_line_count == 1) | |
5137 rest = dp->db_txt_end - dp->db_txt_start; | |
5138 else | |
5139 rest = | |
5140 ((dp->db_index[dp->db_line_count - 2]) & DB_INDEX_MASK) | |
5141 - dp->db_txt_start; | |
5142 curchnk->mlcs_totalsize = rest; | |
5143 curchnk->mlcs_numlines = 1; | |
5144 curchnk[-1].mlcs_totalsize -= rest; | |
5145 curchnk[-1].mlcs_numlines -= 1; | |
5146 } | |
5147 } | |
5148 } | |
5149 else if (updtype == ML_CHNK_DELLINE) | |
5150 { | |
5151 curchnk->mlcs_numlines--; | |
5152 ml_upd_lastbuf = NULL; /* Force recalc of curix & curline */ | |
5153 if (curix < (buf->b_ml.ml_usedchunks - 1) | |
5154 && (curchnk->mlcs_numlines + curchnk[1].mlcs_numlines) | |
5155 <= MLCS_MINL) | |
5156 { | |
5157 curix++; | |
5158 curchnk = buf->b_ml.ml_chunksize + curix; | |
5159 } | |
5160 else if (curix == 0 && curchnk->mlcs_numlines <= 0) | |
5161 { | |
5162 buf->b_ml.ml_usedchunks--; | |
5163 mch_memmove(buf->b_ml.ml_chunksize, buf->b_ml.ml_chunksize + 1, | |
5164 buf->b_ml.ml_usedchunks * sizeof(chunksize_T)); | |
5165 return; | |
5166 } | |
5167 else if (curix == 0 || (curchnk->mlcs_numlines > 10 | |
5168 && (curchnk->mlcs_numlines + curchnk[-1].mlcs_numlines) | |
5169 > MLCS_MINL)) | |
5170 { | |
5171 return; | |
5172 } | |
5173 | |
5174 /* Collapse chunks */ | |
5175 curchnk[-1].mlcs_numlines += curchnk->mlcs_numlines; | |
5176 curchnk[-1].mlcs_totalsize += curchnk->mlcs_totalsize; | |
5177 buf->b_ml.ml_usedchunks--; | |
5178 if (curix < buf->b_ml.ml_usedchunks) | |
5179 { | |
5180 mch_memmove(buf->b_ml.ml_chunksize + curix, | |
5181 buf->b_ml.ml_chunksize + curix + 1, | |
5182 (buf->b_ml.ml_usedchunks - curix) * | |
5183 sizeof(chunksize_T)); | |
5184 } | |
5185 return; | |
5186 } | |
5187 ml_upd_lastbuf = buf; | |
5188 ml_upd_lastline = line; | |
5189 ml_upd_lastcurline = curline; | |
5190 ml_upd_lastcurix = curix; | |
5191 } | |
5192 | |
5193 /* | |
5194 * Find offset for line or line with offset. | |
169 | 5195 * Find line with offset if "lnum" is 0; return remaining offset in offp |
5196 * Find offset of line if "lnum" > 0 | |
7 | 5197 * return -1 if information is not available |
5198 */ | |
5199 long | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
5200 ml_find_line_or_offset(buf_T *buf, linenr_T lnum, long *offp) |
7 | 5201 { |
5202 linenr_T curline; | |
5203 int curix; | |
5204 long size; | |
5205 bhdr_T *hp; | |
5206 DATA_BL *dp; | |
5207 int count; /* number of entries in block */ | |
5208 int idx; | |
5209 int start_idx; | |
5210 int text_end; | |
5211 long offset; | |
5212 int len; | |
5213 int ffdos = (get_fileformat(buf) == EOL_DOS); | |
5214 int extra = 0; | |
5215 | |
169 | 5216 /* take care of cached line first */ |
5217 ml_flush_line(curbuf); | |
5218 | |
7 | 5219 if (buf->b_ml.ml_usedchunks == -1 |
5220 || buf->b_ml.ml_chunksize == NULL | |
169 | 5221 || lnum < 0) |
7 | 5222 return -1; |
5223 | |
5224 if (offp == NULL) | |
5225 offset = 0; | |
5226 else | |
5227 offset = *offp; | |
169 | 5228 if (lnum == 0 && offset <= 0) |
7 | 5229 return 1; /* Not a "find offset" and offset 0 _must_ be in line 1 */ |
5230 /* | |
5231 * Find the last chunk before the one containing our line. Last chunk is | |
5232 * special because it will never qualify | |
5233 */ | |
5234 curline = 1; | |
5235 curix = size = 0; | |
5236 while (curix < buf->b_ml.ml_usedchunks - 1 | |
169 | 5237 && ((lnum != 0 |
5238 && lnum >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines) | |
7 | 5239 || (offset != 0 |
5240 && offset > size + buf->b_ml.ml_chunksize[curix].mlcs_totalsize | |
5241 + ffdos * buf->b_ml.ml_chunksize[curix].mlcs_numlines))) | |
5242 { | |
5243 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
5244 size += buf->b_ml.ml_chunksize[curix].mlcs_totalsize; | |
5245 if (offset && ffdos) | |
5246 size += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
5247 curix++; | |
5248 } | |
5249 | |
169 | 5250 while ((lnum != 0 && curline < lnum) || (offset != 0 && size < offset)) |
7 | 5251 { |
5252 if (curline > buf->b_ml.ml_line_count | |
5253 || (hp = ml_find_line(buf, curline, ML_FIND)) == NULL) | |
5254 return -1; | |
5255 dp = (DATA_BL *)(hp->bh_data); | |
5256 count = (long)(buf->b_ml.ml_locked_high) - | |
5257 (long)(buf->b_ml.ml_locked_low) + 1; | |
5258 start_idx = idx = curline - buf->b_ml.ml_locked_low; | |
5259 if (idx == 0)/* first line in block, text at the end */ | |
5260 text_end = dp->db_txt_end; | |
5261 else | |
5262 text_end = ((dp->db_index[idx - 1]) & DB_INDEX_MASK); | |
5263 /* Compute index of last line to use in this MEMLINE */ | |
169 | 5264 if (lnum != 0) |
7 | 5265 { |
169 | 5266 if (curline + (count - idx) >= lnum) |
5267 idx += lnum - curline - 1; | |
7 | 5268 else |
5269 idx = count - 1; | |
5270 } | |
5271 else | |
5272 { | |
5273 extra = 0; | |
5274 while (offset >= size | |
5275 + text_end - (int)((dp->db_index[idx]) & DB_INDEX_MASK) | |
5276 + ffdos) | |
5277 { | |
5278 if (ffdos) | |
5279 size++; | |
5280 if (idx == count - 1) | |
5281 { | |
5282 extra = 1; | |
5283 break; | |
5284 } | |
5285 idx++; | |
5286 } | |
5287 } | |
5288 len = text_end - ((dp->db_index[idx]) & DB_INDEX_MASK); | |
5289 size += len; | |
5290 if (offset != 0 && size >= offset) | |
5291 { | |
5292 if (size + ffdos == offset) | |
5293 *offp = 0; | |
5294 else if (idx == start_idx) | |
5295 *offp = offset - size + len; | |
5296 else | |
5297 *offp = offset - size + len | |
5298 - (text_end - ((dp->db_index[idx - 1]) & DB_INDEX_MASK)); | |
5299 curline += idx - start_idx + extra; | |
5300 if (curline > buf->b_ml.ml_line_count) | |
5301 return -1; /* exactly one byte beyond the end */ | |
5302 return curline; | |
5303 } | |
5304 curline = buf->b_ml.ml_locked_high + 1; | |
5305 } | |
5306 | |
169 | 5307 if (lnum != 0) |
20 | 5308 { |
5309 /* Count extra CR characters. */ | |
5310 if (ffdos) | |
169 | 5311 size += lnum - 1; |
20 | 5312 |
6933 | 5313 /* Don't count the last line break if 'noeol' and ('bin' or |
5314 * 'nofixeol'). */ | |
5315 if ((!buf->b_p_fixeol || buf->b_p_bin) && !buf->b_p_eol | |
14579
23d6d9e9ae3e
patch 8.1.0303: line2byte() is wrong for last line with 'noeol'
Christian Brabandt <cb@256bit.org>
parents:
14475
diff
changeset
|
5316 && lnum > buf->b_ml.ml_line_count) |
20 | 5317 size -= ffdos + 1; |
5318 } | |
5319 | |
7 | 5320 return size; |
5321 } | |
5322 | |
5323 /* | |
5324 * Goto byte in buffer with offset 'cnt'. | |
5325 */ | |
5326 void | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
5327 goto_byte(long cnt) |
7 | 5328 { |
5329 long boff = cnt; | |
5330 linenr_T lnum; | |
5331 | |
5332 ml_flush_line(curbuf); /* cached line may be dirty */ | |
5333 setpcmark(); | |
5334 if (boff) | |
5335 --boff; | |
5336 lnum = ml_find_line_or_offset(curbuf, (linenr_T)0, &boff); | |
5337 if (lnum < 1) /* past the end */ | |
5338 { | |
5339 curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; | |
5340 curwin->w_curswant = MAXCOL; | |
5341 coladvance((colnr_T)MAXCOL); | |
5342 } | |
5343 else | |
5344 { | |
5345 curwin->w_cursor.lnum = lnum; | |
5346 curwin->w_cursor.col = (colnr_T)boff; | |
572 | 5347 # ifdef FEAT_VIRTUALEDIT |
5348 curwin->w_cursor.coladd = 0; | |
5349 # endif | |
7 | 5350 curwin->w_set_curswant = TRUE; |
5351 } | |
5352 check_cursor(); | |
5353 | |
5354 # ifdef FEAT_MBYTE | |
5355 /* Make sure the cursor is on the first byte of a multi-byte char. */ | |
5356 if (has_mbyte) | |
5357 mb_adjust_cursor(); | |
5358 # endif | |
5359 } | |
5360 #endif |