Mercurial > vim
annotate src/memline.c @ 13282:8db0345053b9 v8.0.1515
patch 8.0.1515: BufWinEnter event fired when opening hidden terminal
commit https://github.com/vim/vim/commit/ab5e7c3deb40328e1c7d40534ed8cd9da47a92f8
Author: Bram Moolenaar <Bram@vim.org>
Date: Tue Feb 13 14:07:18 2018 +0100
patch 8.0.1515: BufWinEnter event fired when opening hidden terminal
Problem: BufWinEnter event fired when opening hidden terminal.
Solution: Do not fire BufWinEnter when the terminal is midden and does not
open a window. (Kenta Sato, closes #2636)
author | Christian Brabandt <cb@256bit.org> |
---|---|
date | Tue, 13 Feb 2018 14:15:06 +0100 |
parents | ac42c4b11dbc |
children | 69517d67421f |
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 */ | |
11 /* #define CHECK(c, s) if (c) EMSG(s) */ | |
12 #define CHECK(c, s) | |
13 | |
14 /* | |
15 * memline.c: Contains the functions for appending, deleting and changing the | |
625 | 16 * text lines. The memfile functions are used to store the information in |
17 * blocks of memory, backed up by a file. The structure of the information is | |
18 * a tree. The root of the tree is a pointer block. The leaves of the tree | |
19 * are data blocks. In between may be several layers of pointer blocks, | |
20 * forming branches. | |
7 | 21 * |
22 * Three types of blocks are used: | |
23 * - Block nr 0 contains information for recovery | |
24 * - Pointer blocks contain list of pointers to other blocks. | |
25 * - Data blocks contain the actual text. | |
26 * | |
27 * Block nr 0 contains the block0 structure (see below). | |
28 * | |
29 * Block nr 1 is the first pointer block. It is the root of the tree. | |
30 * Other pointer blocks are branches. | |
31 * | |
32 * If a line is too big to fit in a single page, the block containing that | |
33 * line is made big enough to hold the line. It may span several pages. | |
34 * Otherwise all blocks are one page. | |
35 * | |
36 * A data block that was filled when starting to edit a file and was not | |
37 * changed since then, can have a negative block number. This means that it | |
38 * has not yet been assigned a place in the file. When recovering, the lines | |
39 * in this data block can be read from the original file. When the block is | |
40 * changed (lines appended/deleted/changed) or when it is flushed it gets a | |
41 * positive number. Use mf_trans_del() to get the new number, before calling | |
42 * mf_get(). | |
43 */ | |
44 | |
45 #include "vim.h" | |
46 | |
47 #ifndef UNIX /* it's in os_unix.h for Unix */ | |
48 # include <time.h> | |
49 #endif | |
50 | |
1030 | 51 #if defined(SASC) || defined(__amigaos4__) |
7 | 52 # include <proto/dos.h> /* for Open() and Close() */ |
53 #endif | |
54 | |
55 typedef struct block0 ZERO_BL; /* contents of the first block */ | |
56 typedef struct pointer_block PTR_BL; /* contents of a pointer block */ | |
57 typedef struct data_block DATA_BL; /* contents of a data block */ | |
58 typedef struct pointer_entry PTR_EN; /* block/line-count pair */ | |
59 | |
2267 | 60 #define DATA_ID (('d' << 8) + 'a') /* data block id */ |
61 #define PTR_ID (('p' << 8) + 't') /* pointer block id */ | |
62 #define BLOCK0_ID0 'b' /* block 0 id 0 */ | |
63 #define BLOCK0_ID1 '0' /* block 0 id 1 */ | |
64 #define BLOCK0_ID1_C0 'c' /* block 0 id 1 'cm' 0 */ | |
65 #define BLOCK0_ID1_C1 'C' /* block 0 id 1 'cm' 1 */ | |
6122 | 66 #define BLOCK0_ID1_C2 'd' /* block 0 id 1 'cm' 2 */ |
67 | |
68 #if defined(FEAT_CRYPT) | |
69 static int id1_codes[] = { | |
70 BLOCK0_ID1_C0, /* CRYPT_M_ZIP */ | |
71 BLOCK0_ID1_C1, /* CRYPT_M_BF */ | |
72 BLOCK0_ID1_C2, /* CRYPT_M_BF2 */ | |
73 }; | |
74 #endif | |
7 | 75 |
76 /* | |
77 * pointer to a block, used in a pointer block | |
78 */ | |
79 struct pointer_entry | |
80 { | |
81 blocknr_T pe_bnum; /* block number */ | |
82 linenr_T pe_line_count; /* number of lines in this branch */ | |
83 linenr_T pe_old_lnum; /* lnum for this block (for recovery) */ | |
84 int pe_page_count; /* number of pages in block pe_bnum */ | |
85 }; | |
86 | |
87 /* | |
88 * A pointer block contains a list of branches in the tree. | |
89 */ | |
90 struct pointer_block | |
91 { | |
92 short_u pb_id; /* ID for pointer block: PTR_ID */ | |
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93 short_u pb_count; /* number of pointers in this block */ |
7 | 94 short_u pb_count_max; /* maximum value for pb_count */ |
95 PTR_EN pb_pointer[1]; /* list of pointers to blocks (actually longer) | |
96 * followed by empty space until end of page */ | |
97 }; | |
98 | |
99 /* | |
100 * A data block is a leaf in the tree. | |
101 * | |
102 * The text of the lines is at the end of the block. The text of the first line | |
103 * in the block is put at the end, the text of the second line in front of it, | |
104 * etc. Thus the order of the lines is the opposite of the line number. | |
105 */ | |
106 struct data_block | |
107 { | |
108 short_u db_id; /* ID for data block: DATA_ID */ | |
109 unsigned db_free; /* free space available */ | |
110 unsigned db_txt_start; /* byte where text starts */ | |
111 unsigned db_txt_end; /* byte just after data block */ | |
112 linenr_T db_line_count; /* number of lines in this block */ | |
113 unsigned db_index[1]; /* index for start of line (actually bigger) | |
114 * followed by empty space upto db_txt_start | |
115 * followed by the text in the lines until | |
116 * end of page */ | |
117 }; | |
118 | |
119 /* | |
120 * The low bits of db_index hold the actual index. The topmost bit is | |
121 * used for the global command to be able to mark a line. | |
122 * This method is not clean, but otherwise there would be at least one extra | |
123 * byte used for each line. | |
124 * The mark has to be in this place to keep it with the correct line when other | |
125 * lines are inserted or deleted. | |
126 */ | |
127 #define DB_MARKED ((unsigned)1 << ((sizeof(unsigned) * 8) - 1)) | |
128 #define DB_INDEX_MASK (~DB_MARKED) | |
129 | |
130 #define INDEX_SIZE (sizeof(unsigned)) /* size of one db_index entry */ | |
131 #define HEADER_SIZE (sizeof(DATA_BL) - INDEX_SIZE) /* size of data block header */ | |
132 | |
39 | 133 #define B0_FNAME_SIZE_ORG 900 /* what it was in older versions */ |
2267 | 134 #define B0_FNAME_SIZE_NOCRYPT 898 /* 2 bytes used for other things */ |
135 #define B0_FNAME_SIZE_CRYPT 890 /* 10 bytes used for other things */ | |
39 | 136 #define B0_UNAME_SIZE 40 |
137 #define B0_HNAME_SIZE 40 | |
7 | 138 /* |
139 * Restrict the numbers to 32 bits, otherwise most compilers will complain. | |
140 * This won't detect a 64 bit machine that only swaps a byte in the top 32 | |
141 * bits, but that is crazy anyway. | |
142 */ | |
143 #define B0_MAGIC_LONG 0x30313233L | |
144 #define B0_MAGIC_INT 0x20212223L | |
145 #define B0_MAGIC_SHORT 0x10111213L | |
146 #define B0_MAGIC_CHAR 0x55 | |
147 | |
148 /* | |
149 * Block zero holds all info about the swap file. | |
150 * | |
151 * NOTE: DEFINITION OF BLOCK 0 SHOULD NOT CHANGE! It would make all existing | |
152 * swap files unusable! | |
153 * | |
154 * If size of block0 changes anyway, adjust MIN_SWAP_PAGE_SIZE in vim.h!! | |
155 * | |
1228 | 156 * This block is built up of single bytes, to make it portable across |
7 | 157 * different machines. b0_magic_* is used to check the byte order and size of |
158 * variables, because the rest of the swap file is not portable. | |
159 */ | |
160 struct block0 | |
161 { | |
2267 | 162 char_u b0_id[2]; /* id for block 0: BLOCK0_ID0 and BLOCK0_ID1, |
6122 | 163 * BLOCK0_ID1_C0, BLOCK0_ID1_C1, etc. */ |
7 | 164 char_u b0_version[10]; /* Vim version string */ |
165 char_u b0_page_size[4];/* number of bytes per page */ | |
166 char_u b0_mtime[4]; /* last modification time of file */ | |
167 char_u b0_ino[4]; /* inode of b0_fname */ | |
168 char_u b0_pid[4]; /* process id of creator (or 0) */ | |
169 char_u b0_uname[B0_UNAME_SIZE]; /* name of user (uid if no name) */ | |
170 char_u b0_hname[B0_HNAME_SIZE]; /* host name (if it has a name) */ | |
39 | 171 char_u b0_fname[B0_FNAME_SIZE_ORG]; /* name of file being edited */ |
7 | 172 long b0_magic_long; /* check for byte order of long */ |
173 int b0_magic_int; /* check for byte order of int */ | |
174 short b0_magic_short; /* check for byte order of short */ | |
175 char_u b0_magic_char; /* check for last char */ | |
176 }; | |
39 | 177 |
178 /* | |
625 | 179 * Note: b0_dirty and b0_flags are put at the end of the file name. For very |
39 | 180 * long file names in older versions of Vim they are invalid. |
181 * The 'fileencoding' comes before b0_flags, with a NUL in front. But only | |
182 * when there is room, for very long file names it's omitted. | |
183 */ | |
184 #define B0_DIRTY 0x55 | |
2267 | 185 #define b0_dirty b0_fname[B0_FNAME_SIZE_ORG - 1] |
39 | 186 |
187 /* | |
188 * The b0_flags field is new in Vim 7.0. | |
189 */ | |
2267 | 190 #define b0_flags b0_fname[B0_FNAME_SIZE_ORG - 2] |
191 | |
192 /* | |
193 * Crypt seed goes here, 8 bytes. New in Vim 7.3. | |
194 * Without encryption these bytes may be used for 'fenc'. | |
195 */ | |
196 #define b0_seed b0_fname[B0_FNAME_SIZE_ORG - 2 - MF_SEED_LEN] | |
39 | 197 |
198 /* The lowest two bits contain the fileformat. Zero means it's not set | |
199 * (compatible with Vim 6.x), otherwise it's EOL_UNIX + 1, EOL_DOS + 1 or | |
200 * EOL_MAC + 1. */ | |
201 #define B0_FF_MASK 3 | |
202 | |
203 /* Swap file is in directory of edited file. Used to find the file from | |
204 * different mount points. */ | |
205 #define B0_SAME_DIR 4 | |
206 | |
207 /* The 'fileencoding' is at the end of b0_fname[], with a NUL in front of it. | |
208 * When empty there is only the NUL. */ | |
209 #define B0_HAS_FENC 8 | |
7 | 210 |
211 #define STACK_INCR 5 /* nr of entries added to ml_stack at a time */ | |
212 | |
213 /* | |
214 * The line number where the first mark may be is remembered. | |
215 * If it is 0 there are no marks at all. | |
216 * (always used for the current buffer only, no buffer change possible while | |
217 * executing a global command). | |
218 */ | |
219 static linenr_T lowest_marked = 0; | |
220 | |
221 /* | |
222 * arguments for ml_find_line() | |
223 */ | |
224 #define ML_DELETE 0x11 /* delete line */ | |
225 #define ML_INSERT 0x12 /* insert line */ | |
226 #define ML_FIND 0x13 /* just find the line */ | |
227 #define ML_FLUSH 0x02 /* flush locked block */ | |
228 #define ML_SIMPLE(x) (x & 0x10) /* DEL, INS or FIND */ | |
229 | |
2267 | 230 /* argument for ml_upd_block0() */ |
231 typedef enum { | |
232 UB_FNAME = 0 /* update timestamp and filename */ | |
233 , UB_SAME_DIR /* update the B0_SAME_DIR flag */ | |
234 , UB_CRYPT /* update crypt key */ | |
235 } upd_block0_T; | |
236 | |
237 #ifdef FEAT_CRYPT | |
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238 static void ml_set_mfp_crypt(buf_T *buf); |
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239 static void ml_set_b0_crypt(buf_T *buf, ZERO_BL *b0p); |
2267 | 240 #endif |
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241 static int ml_check_b0_id(ZERO_BL *b0p); |
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242 static void ml_upd_block0(buf_T *buf, upd_block0_T what); |
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243 static void set_b0_fname(ZERO_BL *, buf_T *buf); |
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244 static void set_b0_dir_flag(ZERO_BL *b0p, buf_T *buf); |
39 | 245 #ifdef FEAT_MBYTE |
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246 static void add_b0_fenc(ZERO_BL *b0p, buf_T *buf); |
39 | 247 #endif |
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248 static time_t swapfile_info(char_u *); |
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249 static int recov_file_names(char_u **, char_u *, int prepend_dot); |
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250 static int ml_append_int(buf_T *, linenr_T, char_u *, colnr_T, int, int); |
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251 static int ml_delete_int(buf_T *, linenr_T, int); |
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252 static char_u *findswapname(buf_T *, char_u **, char_u *); |
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253 static void ml_flush_line(buf_T *); |
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254 static bhdr_T *ml_new_data(memfile_T *, int, int); |
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255 static bhdr_T *ml_new_ptr(memfile_T *); |
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256 static bhdr_T *ml_find_line(buf_T *, linenr_T, int); |
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257 static int ml_add_stack(buf_T *); |
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258 static void ml_lineadd(buf_T *, int); |
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259 static int b0_magic_wrong(ZERO_BL *); |
7 | 260 #ifdef CHECK_INODE |
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261 static int fnamecmp_ino(char_u *, char_u *, long); |
7 | 262 #endif |
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263 static void long_to_char(long, char_u *); |
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264 static long char_to_long(char_u *); |
7 | 265 #if defined(UNIX) || defined(WIN3264) |
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266 static char_u *make_percent_swname(char_u *dir, char_u *name); |
7 | 267 #endif |
2267 | 268 #ifdef FEAT_CRYPT |
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269 static cryptstate_T *ml_crypt_prepare(memfile_T *mfp, off_T offset, int reading); |
2267 | 270 #endif |
7 | 271 #ifdef FEAT_BYTEOFF |
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272 static void ml_updatechunk(buf_T *buf, long line, long len, int updtype); |
7 | 273 #endif |
274 | |
275 /* | |
625 | 276 * Open a new memline for "buf". |
7 | 277 * |
625 | 278 * Return FAIL for failure, OK otherwise. |
7 | 279 */ |
280 int | |
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281 ml_open(buf_T *buf) |
7 | 282 { |
283 memfile_T *mfp; | |
284 bhdr_T *hp = NULL; | |
285 ZERO_BL *b0p; | |
286 PTR_BL *pp; | |
287 DATA_BL *dp; | |
288 | |
625 | 289 /* |
290 * init fields in memline struct | |
291 */ | |
2267 | 292 buf->b_ml.ml_stack_size = 0; /* no stack yet */ |
625 | 293 buf->b_ml.ml_stack = NULL; /* no stack yet */ |
294 buf->b_ml.ml_stack_top = 0; /* nothing in the stack */ | |
295 buf->b_ml.ml_locked = NULL; /* no cached block */ | |
296 buf->b_ml.ml_line_lnum = 0; /* no cached line */ | |
7 | 297 #ifdef FEAT_BYTEOFF |
625 | 298 buf->b_ml.ml_chunksize = NULL; |
7 | 299 #endif |
300 | |
5737 | 301 if (cmdmod.noswapfile) |
302 buf->b_p_swf = FALSE; | |
303 | |
625 | 304 /* |
305 * When 'updatecount' is non-zero swap file may be opened later. | |
306 */ | |
307 if (p_uc && buf->b_p_swf) | |
308 buf->b_may_swap = TRUE; | |
7 | 309 else |
625 | 310 buf->b_may_swap = FALSE; |
311 | |
312 /* | |
313 * Open the memfile. No swap file is created yet. | |
314 */ | |
7 | 315 mfp = mf_open(NULL, 0); |
316 if (mfp == NULL) | |
317 goto error; | |
318 | |
625 | 319 buf->b_ml.ml_mfp = mfp; |
2267 | 320 #ifdef FEAT_CRYPT |
321 mfp->mf_buffer = buf; | |
322 #endif | |
625 | 323 buf->b_ml.ml_flags = ML_EMPTY; |
324 buf->b_ml.ml_line_count = 1; | |
13 | 325 #ifdef FEAT_LINEBREAK |
326 curwin->w_nrwidth_line_count = 0; | |
327 #endif | |
7 | 328 |
329 /* | |
330 * fill block0 struct and write page 0 | |
331 */ | |
332 if ((hp = mf_new(mfp, FALSE, 1)) == NULL) | |
333 goto error; | |
334 if (hp->bh_bnum != 0) | |
335 { | |
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336 IEMSG(_("E298: Didn't get block nr 0?")); |
7 | 337 goto error; |
338 } | |
339 b0p = (ZERO_BL *)(hp->bh_data); | |
340 | |
341 b0p->b0_id[0] = BLOCK0_ID0; | |
342 b0p->b0_id[1] = BLOCK0_ID1; | |
343 b0p->b0_magic_long = (long)B0_MAGIC_LONG; | |
344 b0p->b0_magic_int = (int)B0_MAGIC_INT; | |
345 b0p->b0_magic_short = (short)B0_MAGIC_SHORT; | |
346 b0p->b0_magic_char = B0_MAGIC_CHAR; | |
347 STRNCPY(b0p->b0_version, "VIM ", 4); | |
348 STRNCPY(b0p->b0_version + 4, Version, 6); | |
349 long_to_char((long)mfp->mf_page_size, b0p->b0_page_size); | |
625 | 350 |
800 | 351 #ifdef FEAT_SPELL |
352 if (!buf->b_spell) | |
353 #endif | |
625 | 354 { |
355 b0p->b0_dirty = buf->b_changed ? B0_DIRTY : 0; | |
356 b0p->b0_flags = get_fileformat(buf) + 1; | |
357 set_b0_fname(b0p, buf); | |
358 (void)get_user_name(b0p->b0_uname, B0_UNAME_SIZE); | |
359 b0p->b0_uname[B0_UNAME_SIZE - 1] = NUL; | |
360 mch_get_host_name(b0p->b0_hname, B0_HNAME_SIZE); | |
361 b0p->b0_hname[B0_HNAME_SIZE - 1] = NUL; | |
362 long_to_char(mch_get_pid(), b0p->b0_pid); | |
2267 | 363 #ifdef FEAT_CRYPT |
6122 | 364 ml_set_b0_crypt(buf, b0p); |
2267 | 365 #endif |
625 | 366 } |
7 | 367 |
368 /* | |
369 * Always sync block number 0 to disk, so we can check the file name in | |
2267 | 370 * the swap file in findswapname(). Don't do this for a help files or |
371 * a spell buffer though. | |
7 | 372 * Only works when there's a swapfile, otherwise it's done when the file |
373 * is created. | |
374 */ | |
375 mf_put(mfp, hp, TRUE, FALSE); | |
625 | 376 if (!buf->b_help && !B_SPELL(buf)) |
7 | 377 (void)mf_sync(mfp, 0); |
378 | |
625 | 379 /* |
380 * Fill in root pointer block and write page 1. | |
381 */ | |
7 | 382 if ((hp = ml_new_ptr(mfp)) == NULL) |
383 goto error; | |
384 if (hp->bh_bnum != 1) | |
385 { | |
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386 IEMSG(_("E298: Didn't get block nr 1?")); |
7 | 387 goto error; |
388 } | |
389 pp = (PTR_BL *)(hp->bh_data); | |
390 pp->pb_count = 1; | |
391 pp->pb_pointer[0].pe_bnum = 2; | |
392 pp->pb_pointer[0].pe_page_count = 1; | |
393 pp->pb_pointer[0].pe_old_lnum = 1; | |
394 pp->pb_pointer[0].pe_line_count = 1; /* line count after insertion */ | |
395 mf_put(mfp, hp, TRUE, FALSE); | |
396 | |
625 | 397 /* |
398 * Allocate first data block and create an empty line 1. | |
399 */ | |
7 | 400 if ((hp = ml_new_data(mfp, FALSE, 1)) == NULL) |
401 goto error; | |
402 if (hp->bh_bnum != 2) | |
403 { | |
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404 IEMSG(_("E298: Didn't get block nr 2?")); |
7 | 405 goto error; |
406 } | |
407 | |
408 dp = (DATA_BL *)(hp->bh_data); | |
409 dp->db_index[0] = --dp->db_txt_start; /* at end of block */ | |
410 dp->db_free -= 1 + INDEX_SIZE; | |
411 dp->db_line_count = 1; | |
2003 | 412 *((char_u *)dp + dp->db_txt_start) = NUL; /* empty line */ |
7 | 413 |
414 return OK; | |
415 | |
416 error: | |
417 if (mfp != NULL) | |
418 { | |
419 if (hp) | |
420 mf_put(mfp, hp, FALSE, FALSE); | |
421 mf_close(mfp, TRUE); /* will also free(mfp->mf_fname) */ | |
422 } | |
625 | 423 buf->b_ml.ml_mfp = NULL; |
7 | 424 return FAIL; |
425 } | |
426 | |
2267 | 427 #if defined(FEAT_CRYPT) || defined(PROTO) |
428 /* | |
6130 | 429 * Prepare encryption for "buf" for the current key and method. |
430 */ | |
431 static void | |
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432 ml_set_mfp_crypt(buf_T *buf) |
6130 | 433 { |
434 if (*buf->b_p_key != NUL) | |
435 { | |
436 int method_nr = crypt_get_method_nr(buf); | |
437 | |
438 if (method_nr > CRYPT_M_ZIP) | |
439 { | |
440 /* Generate a seed and store it in the memfile. */ | |
441 sha2_seed(buf->b_ml.ml_mfp->mf_seed, MF_SEED_LEN, NULL, 0); | |
442 } | |
443 } | |
444 } | |
445 | |
446 /* | |
2267 | 447 * Prepare encryption for "buf" with block 0 "b0p". |
448 */ | |
449 static void | |
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450 ml_set_b0_crypt(buf_T *buf, ZERO_BL *b0p) |
2267 | 451 { |
452 if (*buf->b_p_key == NUL) | |
453 b0p->b0_id[1] = BLOCK0_ID1; | |
454 else | |
455 { | |
6122 | 456 int method_nr = crypt_get_method_nr(buf); |
457 | |
458 b0p->b0_id[1] = id1_codes[method_nr]; | |
459 if (method_nr > CRYPT_M_ZIP) | |
2267 | 460 { |
461 /* Generate a seed and store it in block 0 and in the memfile. */ | |
462 sha2_seed(&b0p->b0_seed, MF_SEED_LEN, NULL, 0); | |
463 mch_memmove(buf->b_ml.ml_mfp->mf_seed, &b0p->b0_seed, MF_SEED_LEN); | |
464 } | |
465 } | |
466 } | |
467 | |
468 /* | |
469 * Called after the crypt key or 'cryptmethod' was changed for "buf". | |
470 * Will apply this to the swapfile. | |
471 * "old_key" is the previous key. It is equal to buf->b_p_key when | |
472 * 'cryptmethod' is changed. | |
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473 * "old_cm" is the previous 'cryptmethod'. It is equal to the current |
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474 * 'cryptmethod' when 'key' is changed. |
2267 | 475 */ |
476 void | |
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477 ml_set_crypt_key( |
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478 buf_T *buf, |
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479 char_u *old_key, |
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480 char_u *old_cm) |
2267 | 481 { |
482 memfile_T *mfp = buf->b_ml.ml_mfp; | |
483 bhdr_T *hp; | |
484 int page_count; | |
485 int idx; | |
486 long error; | |
487 infoptr_T *ip; | |
488 PTR_BL *pp; | |
489 DATA_BL *dp; | |
490 blocknr_T bnum; | |
491 int top; | |
6817 | 492 int old_method; |
2267 | 493 |
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494 if (mfp == NULL) |
2267 | 495 return; /* no memfile yet, nothing to do */ |
6817 | 496 old_method = crypt_method_nr_from_name(old_cm); |
497 | |
498 /* First make sure the swapfile is in a consistent state, using the old | |
499 * key and method. */ | |
500 { | |
501 char_u *new_key = buf->b_p_key; | |
502 char_u *new_buf_cm = buf->b_p_cm; | |
503 | |
504 buf->b_p_key = old_key; | |
505 buf->b_p_cm = old_cm; | |
506 ml_preserve(buf, FALSE); | |
507 buf->b_p_key = new_key; | |
508 buf->b_p_cm = new_buf_cm; | |
509 } | |
2267 | 510 |
511 /* Set the key, method and seed to be used for reading, these must be the | |
512 * old values. */ | |
513 mfp->mf_old_key = old_key; | |
6817 | 514 mfp->mf_old_cm = old_method; |
515 if (old_method > 0 && *old_key != NUL) | |
2267 | 516 mch_memmove(mfp->mf_old_seed, mfp->mf_seed, MF_SEED_LEN); |
517 | |
518 /* Update block 0 with the crypt flag and may set a new seed. */ | |
519 ml_upd_block0(buf, UB_CRYPT); | |
520 | |
521 if (mfp->mf_infile_count > 2) | |
522 { | |
523 /* | |
524 * Need to read back all data blocks from disk, decrypt them with the | |
525 * old key/method and mark them to be written. The algorithm is | |
526 * similar to what happens in ml_recover(), but we skip negative block | |
527 * numbers. | |
528 */ | |
529 ml_flush_line(buf); /* flush buffered line */ | |
530 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
531 | |
532 hp = NULL; | |
533 bnum = 1; /* start with block 1 */ | |
534 page_count = 1; /* which is 1 page */ | |
535 idx = 0; /* start with first index in block 1 */ | |
536 error = 0; | |
537 buf->b_ml.ml_stack_top = 0; | |
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538 VIM_CLEAR(buf->b_ml.ml_stack); |
2267 | 539 buf->b_ml.ml_stack_size = 0; /* no stack yet */ |
540 | |
541 for ( ; !got_int; line_breakcheck()) | |
542 { | |
543 if (hp != NULL) | |
544 mf_put(mfp, hp, FALSE, FALSE); /* release previous block */ | |
545 | |
546 /* get the block (pointer or data) */ | |
547 if ((hp = mf_get(mfp, (blocknr_T)bnum, page_count)) == NULL) | |
548 { | |
549 if (bnum == 1) | |
550 break; | |
551 ++error; | |
552 } | |
553 else | |
554 { | |
555 pp = (PTR_BL *)(hp->bh_data); | |
556 if (pp->pb_id == PTR_ID) /* it is a pointer block */ | |
557 { | |
558 if (pp->pb_count == 0) | |
559 { | |
560 /* empty block? */ | |
561 ++error; | |
562 } | |
563 else if (idx < (int)pp->pb_count) /* go a block deeper */ | |
564 { | |
565 if (pp->pb_pointer[idx].pe_bnum < 0) | |
566 { | |
6817 | 567 /* Skip data block with negative block number. |
568 * Should not happen, because of the ml_preserve() | |
569 * above. Get same block again for next index. */ | |
570 ++idx; | |
2267 | 571 continue; |
572 } | |
573 | |
574 /* going one block deeper in the tree, new entry in | |
575 * stack */ | |
576 if ((top = ml_add_stack(buf)) < 0) | |
577 { | |
578 ++error; | |
579 break; /* out of memory */ | |
580 } | |
581 ip = &(buf->b_ml.ml_stack[top]); | |
582 ip->ip_bnum = bnum; | |
583 ip->ip_index = idx; | |
584 | |
585 bnum = pp->pb_pointer[idx].pe_bnum; | |
586 page_count = pp->pb_pointer[idx].pe_page_count; | |
6817 | 587 idx = 0; |
2267 | 588 continue; |
589 } | |
590 } | |
591 else /* not a pointer block */ | |
592 { | |
593 dp = (DATA_BL *)(hp->bh_data); | |
594 if (dp->db_id != DATA_ID) /* block id wrong */ | |
595 ++error; | |
596 else | |
597 { | |
598 /* It is a data block, need to write it back to disk. */ | |
599 mf_put(mfp, hp, TRUE, FALSE); | |
600 hp = NULL; | |
601 } | |
602 } | |
603 } | |
604 | |
605 if (buf->b_ml.ml_stack_top == 0) /* finished */ | |
606 break; | |
607 | |
608 /* go one block up in the tree */ | |
609 ip = &(buf->b_ml.ml_stack[--(buf->b_ml.ml_stack_top)]); | |
610 bnum = ip->ip_bnum; | |
611 idx = ip->ip_index + 1; /* go to next index */ | |
612 page_count = 1; | |
613 } | |
6817 | 614 if (hp != NULL) |
615 mf_put(mfp, hp, FALSE, FALSE); /* release previous block */ | |
2657 | 616 |
617 if (error > 0) | |
618 EMSG(_("E843: Error while updating swap file crypt")); | |
2267 | 619 } |
620 | |
621 mfp->mf_old_key = NULL; | |
622 } | |
623 #endif | |
624 | |
7 | 625 /* |
626 * ml_setname() is called when the file name of "buf" has been changed. | |
627 * It may rename the swap file. | |
628 */ | |
629 void | |
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630 ml_setname(buf_T *buf) |
7 | 631 { |
632 int success = FALSE; | |
633 memfile_T *mfp; | |
634 char_u *fname; | |
635 char_u *dirp; | |
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636 #if defined(MSWIN) |
7 | 637 char_u *p; |
638 #endif | |
639 | |
640 mfp = buf->b_ml.ml_mfp; | |
641 if (mfp->mf_fd < 0) /* there is no swap file yet */ | |
642 { | |
643 /* | |
644 * When 'updatecount' is 0 and 'noswapfile' there is no swap file. | |
645 * For help files we will make a swap file now. | |
646 */ | |
5737 | 647 if (p_uc != 0 && !cmdmod.noswapfile) |
7 | 648 ml_open_file(buf); /* create a swap file */ |
649 return; | |
650 } | |
651 | |
652 /* | |
653 * Try all directories in the 'directory' option. | |
654 */ | |
655 dirp = p_dir; | |
656 for (;;) | |
657 { | |
658 if (*dirp == NUL) /* tried all directories, fail */ | |
659 break; | |
43 | 660 fname = findswapname(buf, &dirp, mfp->mf_fname); |
661 /* alloc's fname */ | |
3158 | 662 if (dirp == NULL) /* out of memory */ |
663 break; | |
7 | 664 if (fname == NULL) /* no file name found for this dir */ |
665 continue; | |
666 | |
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667 #if defined(MSWIN) |
7 | 668 /* |
669 * Set full pathname for swap file now, because a ":!cd dir" may | |
670 * change directory without us knowing it. | |
671 */ | |
672 p = FullName_save(fname, FALSE); | |
673 vim_free(fname); | |
674 fname = p; | |
675 if (fname == NULL) | |
676 continue; | |
677 #endif | |
678 /* if the file name is the same we don't have to do anything */ | |
679 if (fnamecmp(fname, mfp->mf_fname) == 0) | |
680 { | |
681 vim_free(fname); | |
682 success = TRUE; | |
683 break; | |
684 } | |
685 /* need to close the swap file before renaming */ | |
686 if (mfp->mf_fd >= 0) | |
687 { | |
688 close(mfp->mf_fd); | |
689 mfp->mf_fd = -1; | |
690 } | |
691 | |
692 /* try to rename the swap file */ | |
693 if (vim_rename(mfp->mf_fname, fname) == 0) | |
694 { | |
695 success = TRUE; | |
696 vim_free(mfp->mf_fname); | |
697 mfp->mf_fname = fname; | |
698 vim_free(mfp->mf_ffname); | |
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699 #if defined(MSWIN) |
7 | 700 mfp->mf_ffname = NULL; /* mf_fname is full pathname already */ |
701 #else | |
702 mf_set_ffname(mfp); | |
703 #endif | |
2267 | 704 ml_upd_block0(buf, UB_SAME_DIR); |
7 | 705 break; |
706 } | |
707 vim_free(fname); /* this fname didn't work, try another */ | |
708 } | |
709 | |
710 if (mfp->mf_fd == -1) /* need to (re)open the swap file */ | |
711 { | |
712 mfp->mf_fd = mch_open((char *)mfp->mf_fname, O_RDWR | O_EXTRA, 0); | |
713 if (mfp->mf_fd < 0) | |
714 { | |
715 /* could not (re)open the swap file, what can we do???? */ | |
716 EMSG(_("E301: Oops, lost the swap file!!!")); | |
717 return; | |
718 } | |
2003 | 719 #ifdef HAVE_FD_CLOEXEC |
720 { | |
721 int fdflags = fcntl(mfp->mf_fd, F_GETFD); | |
722 if (fdflags >= 0 && (fdflags & FD_CLOEXEC) == 0) | |
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723 (void)fcntl(mfp->mf_fd, F_SETFD, fdflags | FD_CLOEXEC); |
2003 | 724 } |
725 #endif | |
7 | 726 } |
727 if (!success) | |
728 EMSG(_("E302: Could not rename swap file")); | |
729 } | |
730 | |
731 /* | |
732 * Open a file for the memfile for all buffers that are not readonly or have | |
733 * been modified. | |
734 * Used when 'updatecount' changes from zero to non-zero. | |
735 */ | |
736 void | |
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737 ml_open_files(void) |
7 | 738 { |
739 buf_T *buf; | |
740 | |
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741 FOR_ALL_BUFFERS(buf) |
7 | 742 if (!buf->b_p_ro || buf->b_changed) |
743 ml_open_file(buf); | |
744 } | |
745 | |
746 /* | |
747 * Open a swap file for an existing memfile, if there is no swap file yet. | |
748 * If we are unable to find a file name, mf_fname will be NULL | |
749 * and the memfile will be in memory only (no recovery possible). | |
750 */ | |
751 void | |
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752 ml_open_file(buf_T *buf) |
7 | 753 { |
754 memfile_T *mfp; | |
755 char_u *fname; | |
756 char_u *dirp; | |
757 | |
758 mfp = buf->b_ml.ml_mfp; | |
5737 | 759 if (mfp == NULL || mfp->mf_fd >= 0 || !buf->b_p_swf || cmdmod.noswapfile) |
7 | 760 return; /* nothing to do */ |
761 | |
748 | 762 #ifdef FEAT_SPELL |
625 | 763 /* For a spell buffer use a temp file name. */ |
764 if (buf->b_spell) | |
765 { | |
6721 | 766 fname = vim_tempname('s', FALSE); |
625 | 767 if (fname != NULL) |
768 (void)mf_open_file(mfp, fname); /* consumes fname! */ | |
769 buf->b_may_swap = FALSE; | |
770 return; | |
771 } | |
772 #endif | |
773 | |
7 | 774 /* |
775 * Try all directories in 'directory' option. | |
776 */ | |
777 dirp = p_dir; | |
778 for (;;) | |
779 { | |
780 if (*dirp == NUL) | |
781 break; | |
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782 /* There is a small chance that between choosing the swap file name |
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783 * and creating it, another Vim creates the file. In that case the |
7 | 784 * creation will fail and we will use another directory. */ |
43 | 785 fname = findswapname(buf, &dirp, NULL); /* allocates fname */ |
3158 | 786 if (dirp == NULL) |
787 break; /* out of memory */ | |
7 | 788 if (fname == NULL) |
789 continue; | |
790 if (mf_open_file(mfp, fname) == OK) /* consumes fname! */ | |
791 { | |
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792 #if defined(MSWIN) |
7 | 793 /* |
794 * set full pathname for swap file now, because a ":!cd dir" may | |
795 * change directory without us knowing it. | |
796 */ | |
797 mf_fullname(mfp); | |
798 #endif | |
2267 | 799 ml_upd_block0(buf, UB_SAME_DIR); |
39 | 800 |
7 | 801 /* Flush block zero, so others can read it */ |
802 if (mf_sync(mfp, MFS_ZERO) == OK) | |
630 | 803 { |
804 /* Mark all blocks that should be in the swapfile as dirty. | |
805 * Needed for when the 'swapfile' option was reset, so that | |
806 * the swap file was deleted, and then on again. */ | |
807 mf_set_dirty(mfp); | |
7 | 808 break; |
630 | 809 } |
7 | 810 /* Writing block 0 failed: close the file and try another dir */ |
811 mf_close_file(buf, FALSE); | |
812 } | |
813 } | |
814 | |
815 if (mfp->mf_fname == NULL) /* Failed! */ | |
816 { | |
817 need_wait_return = TRUE; /* call wait_return later */ | |
818 ++no_wait_return; | |
819 (void)EMSG2(_("E303: Unable to open swap file for \"%s\", recovery impossible"), | |
3839 | 820 buf_spname(buf) != NULL ? buf_spname(buf) : buf->b_fname); |
7 | 821 --no_wait_return; |
822 } | |
823 | |
824 /* don't try to open a swap file again */ | |
825 buf->b_may_swap = FALSE; | |
826 } | |
827 | |
828 /* | |
829 * If still need to create a swap file, and starting to edit a not-readonly | |
830 * file, or reading into an existing buffer, create a swap file now. | |
831 */ | |
832 void | |
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833 check_need_swap( |
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834 int newfile) /* reading file into new buffer */ |
7 | 835 { |
836 if (curbuf->b_may_swap && (!curbuf->b_p_ro || !newfile)) | |
837 ml_open_file(curbuf); | |
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; | |
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|
1211 #ifdef FEAT_CRYPT |
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diff
changeset
|
1212 buf->b_p_key = empty_option; |
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diff
changeset
|
1213 buf->b_p_cm = empty_option; |
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Bram Moolenaar <bram@vim.org>
parents:
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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
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Christian Brabandt <cb@256bit.org>
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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
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|
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
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|
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
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Bram Moolenaar <bram@vim.org>
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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
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diff
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|
1384 fnsize = B0_FNAME_SIZE_CRYPT; |
2267 | 1385 #endif |
2271
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diff
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|
1386 for (p = b0p->b0_fname + fnsize; p > b0p->b0_fname && p[-1] != NUL; --p) |
39 | 1387 ; |
2271
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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
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Bram Moolenaar <bram@vim.org>
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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
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Bram Moolenaar <bram@vim.org>
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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
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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
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parents:
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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
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diff
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|
1639 * set the 'modified' flag. |
0527eb0f6918
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diff
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|
1640 * Lines 1 - lnum are the new contents. |
0527eb0f6918
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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
changeset
|
1642 * Line ml_line_count + 1 in the dummy empty line. |
7 | 1643 */ |
2162
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diff
changeset
|
1644 if (orig_file_status != OK || curbuf->b_ml.ml_line_count != lnum * 2 + 1) |
0527eb0f6918
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diff
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|
1645 { |
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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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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|
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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|
1655 { |
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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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1659 p = vim_strsave(ml_get(idx)); |
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|
1660 i = STRCMP(p, ml_get(idx + lnum)); |
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|
1661 vim_free(p); |
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1662 if (i != 0) |
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|
1663 { |
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|
1664 changed_int(); |
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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 |
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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); | |
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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 #ifdef FEAT_AUTOCMD | |
1736 else | |
1737 { | |
1738 apply_autocmds(EVENT_BUFREADPOST, NULL, curbuf->b_fname, FALSE, curbuf); | |
1739 apply_autocmds(EVENT_BUFWINENTER, NULL, curbuf->b_fname, FALSE, curbuf); | |
1740 } | |
1741 #endif | |
1742 return; | |
1743 } | |
1744 | |
1745 /* | |
1746 * Find the names of swap files in current directory and the directory given | |
1747 * with the 'directory' option. | |
1748 * | |
1749 * Used to: | |
1750 * - list the swap files for "vim -r" | |
1751 * - count the number of swap files when recovering | |
1752 * - list the swap files when recovering | |
1753 * - find the name of the n'th swap file when recovering | |
1754 */ | |
1755 int | |
7827
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1756 recover_names( |
41789f16d6b2
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1757 char_u *fname, /* base for swap file name */ |
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1758 int list, /* when TRUE, list the swap file names */ |
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1759 int nr, /* when non-zero, return nr'th swap file name */ |
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1760 char_u **fname_out) /* result when "nr" > 0 */ |
7 | 1761 { |
1762 int num_names; | |
1763 char_u *(names[6]); | |
1764 char_u *tail; | |
1765 char_u *p; | |
1766 int num_files; | |
1767 int file_count = 0; | |
1768 char_u **files; | |
1769 int i; | |
1770 char_u *dirp; | |
1771 char_u *dir_name; | |
2175 | 1772 char_u *fname_res = NULL; |
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1773 #ifdef HAVE_READLINK |
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1774 char_u fname_buf[MAXPATHL]; |
2175 | 1775 #endif |
1776 | |
1777 if (fname != NULL) | |
1778 { | |
1779 #ifdef HAVE_READLINK | |
2267 | 1780 /* Expand symlink in the file name, because the swap file is created |
1781 * with the actual file instead of with the symlink. */ | |
1782 if (resolve_symlink(fname, fname_buf) == OK) | |
1783 fname_res = fname_buf; | |
1784 else | |
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1785 #endif |
2267 | 1786 fname_res = fname; |
2175 | 1787 } |
7 | 1788 |
1789 if (list) | |
1790 { | |
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1791 /* use msg() to start the scrolling properly */ |
7 | 1792 msg((char_u *)_("Swap files found:")); |
1793 msg_putchar('\n'); | |
1794 } | |
1795 | |
1796 /* | |
1797 * Do the loop for every directory in 'directory'. | |
1798 * First allocate some memory to put the directory name in. | |
1799 */ | |
1800 dir_name = alloc((unsigned)STRLEN(p_dir) + 1); | |
1801 dirp = p_dir; | |
1802 while (dir_name != NULL && *dirp) | |
1803 { | |
1804 /* | |
1805 * Isolate a directory name from *dirp and put it in dir_name (we know | |
1806 * it is large enough, so use 31000 for length). | |
1807 * Advance dirp to next directory name. | |
1808 */ | |
1809 (void)copy_option_part(&dirp, dir_name, 31000, ","); | |
1810 | |
1811 if (dir_name[0] == '.' && dir_name[1] == NUL) /* check current dir */ | |
1812 { | |
2267 | 1813 if (fname == NULL) |
7 | 1814 { |
1815 #ifdef VMS | |
1816 names[0] = vim_strsave((char_u *)"*_sw%"); | |
1817 #else | |
1818 names[0] = vim_strsave((char_u *)"*.sw?"); | |
1819 #endif | |
1005 | 1820 #if defined(UNIX) || defined(WIN3264) |
1821 /* For Unix names starting with a dot are special. MS-Windows | |
1822 * supports this too, on some file systems. */ | |
7 | 1823 names[1] = vim_strsave((char_u *)".*.sw?"); |
1824 names[2] = vim_strsave((char_u *)".sw?"); | |
1825 num_names = 3; | |
1826 #else | |
1827 # ifdef VMS | |
1828 names[1] = vim_strsave((char_u *)".*_sw%"); | |
1829 num_names = 2; | |
1830 # else | |
1831 num_names = 1; | |
1832 # endif | |
1833 #endif | |
1834 } | |
1835 else | |
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1836 num_names = recov_file_names(names, fname_res, TRUE); |
7 | 1837 } |
1838 else /* check directory dir_name */ | |
1839 { | |
2267 | 1840 if (fname == NULL) |
7 | 1841 { |
1842 #ifdef VMS | |
1843 names[0] = concat_fnames(dir_name, (char_u *)"*_sw%", TRUE); | |
1844 #else | |
1845 names[0] = concat_fnames(dir_name, (char_u *)"*.sw?", TRUE); | |
1846 #endif | |
1005 | 1847 #if defined(UNIX) || defined(WIN3264) |
1848 /* For Unix names starting with a dot are special. MS-Windows | |
1849 * supports this too, on some file systems. */ | |
7 | 1850 names[1] = concat_fnames(dir_name, (char_u *)".*.sw?", TRUE); |
1851 names[2] = concat_fnames(dir_name, (char_u *)".sw?", TRUE); | |
1852 num_names = 3; | |
1853 #else | |
1854 # ifdef VMS | |
1855 names[1] = concat_fnames(dir_name, (char_u *)".*_sw%", TRUE); | |
1856 num_names = 2; | |
1857 # else | |
1858 num_names = 1; | |
1859 # endif | |
1860 #endif | |
1861 } | |
1862 else | |
1863 { | |
1864 #if defined(UNIX) || defined(WIN3264) | |
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1865 int len = (int)STRLEN(dir_name); |
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1866 |
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1867 p = dir_name + len; |
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1868 if (after_pathsep(dir_name, p) && len > 1 && p[-1] == p[-2]) |
7 | 1869 { |
1870 /* Ends with '//', Use Full path for swap name */ | |
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1871 tail = make_percent_swname(dir_name, fname_res); |
7 | 1872 } |
1873 else | |
1874 #endif | |
1875 { | |
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1876 tail = gettail(fname_res); |
7 | 1877 tail = concat_fnames(dir_name, tail, TRUE); |
1878 } | |
1879 if (tail == NULL) | |
1880 num_names = 0; | |
1881 else | |
1882 { | |
1883 num_names = recov_file_names(names, tail, FALSE); | |
1884 vim_free(tail); | |
1885 } | |
1886 } | |
1887 } | |
1888 | |
1889 /* check for out-of-memory */ | |
1890 for (i = 0; i < num_names; ++i) | |
1891 { | |
1892 if (names[i] == NULL) | |
1893 { | |
1894 for (i = 0; i < num_names; ++i) | |
1895 vim_free(names[i]); | |
1896 num_names = 0; | |
1897 } | |
1898 } | |
1899 if (num_names == 0) | |
1900 num_files = 0; | |
1901 else if (expand_wildcards(num_names, names, &num_files, &files, | |
1902 EW_KEEPALL|EW_FILE|EW_SILENT) == FAIL) | |
1903 num_files = 0; | |
1904 | |
1905 /* | |
1906 * When no swap file found, wildcard expansion might have failed (e.g. | |
1907 * not able to execute the shell). | |
1908 * Try finding a swap file by simply adding ".swp" to the file name. | |
1909 */ | |
2267 | 1910 if (*dirp == NUL && file_count + num_files == 0 && fname != NULL) |
7 | 1911 { |
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diff
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|
1912 stat_T st; |
7 | 1913 char_u *swapname; |
1914 | |
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1915 swapname = modname(fname_res, |
2823 | 1916 #if defined(VMS) |
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1917 (char_u *)"_swp", FALSE |
7 | 1918 #else |
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1919 (char_u *)".swp", TRUE |
7 | 1920 #endif |
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1921 ); |
7 | 1922 if (swapname != NULL) |
1923 { | |
1924 if (mch_stat((char *)swapname, &st) != -1) /* It exists! */ | |
1925 { | |
1926 files = (char_u **)alloc((unsigned)sizeof(char_u *)); | |
1927 if (files != NULL) | |
1928 { | |
1929 files[0] = swapname; | |
1930 swapname = NULL; | |
1931 num_files = 1; | |
1932 } | |
1933 } | |
1934 vim_free(swapname); | |
1935 } | |
1936 } | |
1937 | |
1938 /* | |
1939 * remove swapfile name of the current buffer, it must be ignored | |
1940 */ | |
1941 if (curbuf->b_ml.ml_mfp != NULL | |
1942 && (p = curbuf->b_ml.ml_mfp->mf_fname) != NULL) | |
1943 { | |
1944 for (i = 0; i < num_files; ++i) | |
1945 if (fullpathcmp(p, files[i], TRUE) & FPC_SAME) | |
1946 { | |
1855 | 1947 /* Remove the name from files[i]. Move further entries |
1948 * down. When the array becomes empty free it here, since | |
1949 * FreeWild() won't be called below. */ | |
7 | 1950 vim_free(files[i]); |
1855 | 1951 if (--num_files == 0) |
1952 vim_free(files); | |
1953 else | |
1954 for ( ; i < num_files; ++i) | |
1955 files[i] = files[i + 1]; | |
7 | 1956 } |
1957 } | |
838 | 1958 if (nr > 0) |
7 | 1959 { |
1960 file_count += num_files; | |
1961 if (nr <= file_count) | |
1962 { | |
2267 | 1963 *fname_out = vim_strsave( |
1964 files[nr - 1 + num_files - file_count]); | |
7 | 1965 dirp = (char_u *)""; /* stop searching */ |
1966 } | |
1967 } | |
1968 else if (list) | |
1969 { | |
1970 if (dir_name[0] == '.' && dir_name[1] == NUL) | |
1971 { | |
2267 | 1972 if (fname == NULL) |
7 | 1973 MSG_PUTS(_(" In current directory:\n")); |
1974 else | |
1975 MSG_PUTS(_(" Using specified name:\n")); | |
1976 } | |
1977 else | |
1978 { | |
1979 MSG_PUTS(_(" In directory ")); | |
1980 msg_home_replace(dir_name); | |
1981 MSG_PUTS(":\n"); | |
1982 } | |
1983 | |
1984 if (num_files) | |
1985 { | |
1986 for (i = 0; i < num_files; ++i) | |
1987 { | |
1988 /* print the swap file name */ | |
1989 msg_outnum((long)++file_count); | |
1990 MSG_PUTS(". "); | |
1991 msg_puts(gettail(files[i])); | |
1992 msg_putchar('\n'); | |
1993 (void)swapfile_info(files[i]); | |
1994 } | |
1995 } | |
1996 else | |
1997 MSG_PUTS(_(" -- none --\n")); | |
1998 out_flush(); | |
1999 } | |
2000 else | |
2001 file_count += num_files; | |
2002 | |
2003 for (i = 0; i < num_names; ++i) | |
2004 vim_free(names[i]); | |
838 | 2005 if (num_files > 0) |
2006 FreeWild(num_files, files); | |
7 | 2007 } |
2008 vim_free(dir_name); | |
2009 return file_count; | |
2010 } | |
2011 | |
2012 #if defined(UNIX) || defined(WIN3264) /* Need _very_ long file names */ | |
2013 /* | |
2014 * Append the full path to name with path separators made into percent | |
2015 * signs, to dir. An unnamed buffer is handled as "" (<currentdir>/"") | |
2016 */ | |
2017 static char_u * | |
7827
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2018 make_percent_swname(char_u *dir, char_u *name) |
7 | 2019 { |
39 | 2020 char_u *d, *s, *f; |
7 | 2021 |
2022 f = fix_fname(name != NULL ? name : (char_u *) ""); | |
2023 d = NULL; | |
2024 if (f != NULL) | |
2025 { | |
2026 s = alloc((unsigned)(STRLEN(f) + 1)); | |
2027 if (s != NULL) | |
2028 { | |
39 | 2029 STRCPY(s, f); |
11127
506f5d8b7d8b
patch 8.0.0451: some macros are in lower case
Christian Brabandt <cb@256bit.org>
parents:
10996
diff
changeset
|
2030 for (d = s; *d != NUL; MB_PTR_ADV(d)) |
39 | 2031 if (vim_ispathsep(*d)) |
2032 *d = '%'; | |
7 | 2033 d = concat_fnames(dir, s, TRUE); |
2034 vim_free(s); | |
2035 } | |
2036 vim_free(f); | |
2037 } | |
2038 return d; | |
2039 } | |
2040 #endif | |
2041 | |
9536
b2aada04d84e
commit https://github.com/vim/vim/commit/a06ecab7a5159e744448ace731036f0dc5f87dd4
Christian Brabandt <cb@256bit.org>
parents:
9387
diff
changeset
|
2042 #if (defined(UNIX) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)) |
7 | 2043 static int process_still_running; |
2044 #endif | |
2045 | |
2046 /* | |
580 | 2047 * Give information about an existing swap file. |
7 | 2048 * Returns timestamp (0 when unknown). |
2049 */ | |
2050 static time_t | |
7827
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2051 swapfile_info(char_u *fname) |
7 | 2052 { |
9387
f094d4085014
commit https://github.com/vim/vim/commit/8767f52fbfd4f053ce00a978227c95f1d7d323fe
Christian Brabandt <cb@256bit.org>
parents:
9295
diff
changeset
|
2053 stat_T st; |
7 | 2054 int fd; |
2055 struct block0 b0; | |
2056 time_t x = (time_t)0; | |
1001 | 2057 char *p; |
7 | 2058 #ifdef UNIX |
2059 char_u uname[B0_UNAME_SIZE]; | |
2060 #endif | |
2061 | |
2062 /* print the swap file date */ | |
2063 if (mch_stat((char *)fname, &st) != -1) | |
2064 { | |
2065 #ifdef UNIX | |
2066 /* print name of owner of the file */ | |
2067 if (mch_get_uname(st.st_uid, uname, B0_UNAME_SIZE) == OK) | |
2068 { | |
2069 MSG_PUTS(_(" owned by: ")); | |
2070 msg_outtrans(uname); | |
2071 MSG_PUTS(_(" dated: ")); | |
2072 } | |
2073 else | |
2074 #endif | |
2075 MSG_PUTS(_(" dated: ")); | |
2076 x = st.st_mtime; /* Manx C can't do &st.st_mtime */ | |
1001 | 2077 p = ctime(&x); /* includes '\n' */ |
2078 if (p == NULL) | |
2079 MSG_PUTS("(invalid)\n"); | |
2080 else | |
2081 MSG_PUTS(p); | |
7 | 2082 } |
2083 | |
2084 /* | |
2085 * print the original file name | |
2086 */ | |
2087 fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
2088 if (fd >= 0) | |
2089 { | |
2664 | 2090 if (read_eintr(fd, &b0, sizeof(b0)) == sizeof(b0)) |
7 | 2091 { |
2092 if (STRNCMP(b0.b0_version, "VIM 3.0", 7) == 0) | |
2093 { | |
2094 MSG_PUTS(_(" [from Vim version 3.0]")); | |
2095 } | |
2267 | 2096 else if (ml_check_b0_id(&b0) == FAIL) |
7 | 2097 { |
2098 MSG_PUTS(_(" [does not look like a Vim swap file]")); | |
2099 } | |
2100 else | |
2101 { | |
2102 MSG_PUTS(_(" file name: ")); | |
2103 if (b0.b0_fname[0] == NUL) | |
9 | 2104 MSG_PUTS(_("[No Name]")); |
7 | 2105 else |
2106 msg_outtrans(b0.b0_fname); | |
2107 | |
2108 MSG_PUTS(_("\n modified: ")); | |
2109 MSG_PUTS(b0.b0_dirty ? _("YES") : _("no")); | |
2110 | |
2111 if (*(b0.b0_uname) != NUL) | |
2112 { | |
2113 MSG_PUTS(_("\n user name: ")); | |
2114 msg_outtrans(b0.b0_uname); | |
2115 } | |
2116 | |
2117 if (*(b0.b0_hname) != NUL) | |
2118 { | |
2119 if (*(b0.b0_uname) != NUL) | |
2120 MSG_PUTS(_(" host name: ")); | |
2121 else | |
2122 MSG_PUTS(_("\n host name: ")); | |
2123 msg_outtrans(b0.b0_hname); | |
2124 } | |
2125 | |
2126 if (char_to_long(b0.b0_pid) != 0L) | |
2127 { | |
2128 MSG_PUTS(_("\n process ID: ")); | |
2129 msg_outnum(char_to_long(b0.b0_pid)); | |
9536
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commit https://github.com/vim/vim/commit/a06ecab7a5159e744448ace731036f0dc5f87dd4
Christian Brabandt <cb@256bit.org>
parents:
9387
diff
changeset
|
2130 #if defined(UNIX) |
7 | 2131 /* EMX kill() not working correctly, it seems */ |
2132 if (kill((pid_t)char_to_long(b0.b0_pid), 0) == 0) | |
2133 { | |
2134 MSG_PUTS(_(" (still running)")); | |
2135 # if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) | |
2136 process_still_running = TRUE; | |
2137 # endif | |
2138 } | |
2139 #endif | |
2140 } | |
2141 | |
2142 if (b0_magic_wrong(&b0)) | |
2143 { | |
8212
05b88224cea1
commit https://github.com/vim/vim/commit/48e330aff911be1c798c88a973af6437a8141fce
Christian Brabandt <cb@256bit.org>
parents:
7961
diff
changeset
|
2144 #if defined(MSWIN) |
7 | 2145 if (STRNCMP(b0.b0_hname, "PC ", 3) == 0) |
2146 MSG_PUTS(_("\n [not usable with this version of Vim]")); | |
2147 else | |
2148 #endif | |
2149 MSG_PUTS(_("\n [not usable on this computer]")); | |
2150 } | |
2151 } | |
2152 } | |
2153 else | |
2154 MSG_PUTS(_(" [cannot be read]")); | |
2155 close(fd); | |
2156 } | |
2157 else | |
2158 MSG_PUTS(_(" [cannot be opened]")); | |
2159 msg_putchar('\n'); | |
2160 | |
2161 return x; | |
2162 } | |
2163 | |
2164 static int | |
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2165 recov_file_names(char_u **names, char_u *path, int prepend_dot) |
7 | 2166 { |
2167 int num_names; | |
2168 | |
2169 /* | |
2170 * (Win32 and Win64) never short names, but do prepend a dot. | |
2171 * (Not MS-DOS or Win32 or Win64) maybe short name, maybe not: Try both. | |
2172 * Only use the short name if it is different. | |
2173 */ | |
2174 char_u *p; | |
2175 int i; | |
2176 # ifndef WIN3264 | |
2177 int shortname = curbuf->b_shortname; | |
2178 | |
2179 curbuf->b_shortname = FALSE; | |
2180 # endif | |
2181 | |
2182 num_names = 0; | |
2183 | |
2184 /* | |
2185 * May also add the file name with a dot prepended, for swap file in same | |
2186 * dir as original file. | |
2187 */ | |
2188 if (prepend_dot) | |
2189 { | |
2190 names[num_names] = modname(path, (char_u *)".sw?", TRUE); | |
2191 if (names[num_names] == NULL) | |
2192 goto end; | |
2193 ++num_names; | |
2194 } | |
2195 | |
2196 /* | |
2197 * Form the normal swap file name pattern by appending ".sw?". | |
2198 */ | |
2199 #ifdef VMS | |
2200 names[num_names] = concat_fnames(path, (char_u *)"_sw%", FALSE); | |
2201 #else | |
2202 names[num_names] = concat_fnames(path, (char_u *)".sw?", FALSE); | |
2203 #endif | |
2204 if (names[num_names] == NULL) | |
2205 goto end; | |
2206 if (num_names >= 1) /* check if we have the same name twice */ | |
2207 { | |
2208 p = names[num_names - 1]; | |
2209 i = (int)STRLEN(names[num_names - 1]) - (int)STRLEN(names[num_names]); | |
2210 if (i > 0) | |
2211 p += i; /* file name has been expanded to full path */ | |
2212 | |
2213 if (STRCMP(p, names[num_names]) != 0) | |
2214 ++num_names; | |
2215 else | |
2216 vim_free(names[num_names]); | |
2217 } | |
2218 else | |
2219 ++num_names; | |
2220 | |
2221 # ifndef WIN3264 | |
2222 /* | |
2223 * Also try with 'shortname' set, in case the file is on a DOS filesystem. | |
2224 */ | |
2225 curbuf->b_shortname = TRUE; | |
2226 #ifdef VMS | |
2227 names[num_names] = modname(path, (char_u *)"_sw%", FALSE); | |
2228 #else | |
2229 names[num_names] = modname(path, (char_u *)".sw?", FALSE); | |
2230 #endif | |
2231 if (names[num_names] == NULL) | |
2232 goto end; | |
2233 | |
2234 /* | |
2235 * Remove the one from 'shortname', if it's the same as with 'noshortname'. | |
2236 */ | |
2237 p = names[num_names]; | |
2238 i = STRLEN(names[num_names]) - STRLEN(names[num_names - 1]); | |
2239 if (i > 0) | |
2240 p += i; /* file name has been expanded to full path */ | |
2241 if (STRCMP(names[num_names - 1], p) == 0) | |
2242 vim_free(names[num_names]); | |
2243 else | |
2244 ++num_names; | |
2245 # endif | |
2246 | |
2247 end: | |
2248 # ifndef WIN3264 | |
2249 curbuf->b_shortname = shortname; | |
2250 # endif | |
2251 | |
2252 return num_names; | |
2253 } | |
2254 | |
2255 /* | |
2256 * sync all memlines | |
2257 * | |
2258 * If 'check_file' is TRUE, check if original file exists and was not changed. | |
2259 * If 'check_char' is TRUE, stop syncing when character becomes available, but | |
2260 * always sync at least one block. | |
2261 */ | |
2262 void | |
7827
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2263 ml_sync_all(int check_file, int check_char) |
7 | 2264 { |
2265 buf_T *buf; | |
9387
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Christian Brabandt <cb@256bit.org>
parents:
9295
diff
changeset
|
2266 stat_T st; |
7 | 2267 |
9649
fd9727ae3c49
commit https://github.com/vim/vim/commit/2932359000b2f918d5fade79ea4d124d5943cd07
Christian Brabandt <cb@256bit.org>
parents:
9536
diff
changeset
|
2268 FOR_ALL_BUFFERS(buf) |
7 | 2269 { |
2270 if (buf->b_ml.ml_mfp == NULL || buf->b_ml.ml_mfp->mf_fname == NULL) | |
2271 continue; /* no file */ | |
2272 | |
2273 ml_flush_line(buf); /* flush buffered line */ | |
2274 /* flush locked block */ | |
2275 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); | |
2276 if (bufIsChanged(buf) && check_file && mf_need_trans(buf->b_ml.ml_mfp) | |
2277 && buf->b_ffname != NULL) | |
2278 { | |
2279 /* | |
2280 * If the original file does not exist anymore or has been changed | |
2281 * call ml_preserve() to get rid of all negative numbered blocks. | |
2282 */ | |
2283 if (mch_stat((char *)buf->b_ffname, &st) == -1 | |
2284 || st.st_mtime != buf->b_mtime_read | |
2241
60da25e3aab7
Correct use of long instead of off_t for file size. (James Vega)
Bram Moolenaar <bram@vim.org>
parents:
2240
diff
changeset
|
2285 || st.st_size != buf->b_orig_size) |
7 | 2286 { |
2287 ml_preserve(buf, FALSE); | |
2288 did_check_timestamps = FALSE; | |
2289 need_check_timestamps = TRUE; /* give message later */ | |
2290 } | |
2291 } | |
2292 if (buf->b_ml.ml_mfp->mf_dirty) | |
2293 { | |
2294 (void)mf_sync(buf->b_ml.ml_mfp, (check_char ? MFS_STOP : 0) | |
2295 | (bufIsChanged(buf) ? MFS_FLUSH : 0)); | |
2296 if (check_char && ui_char_avail()) /* character available now */ | |
2297 break; | |
2298 } | |
2299 } | |
2300 } | |
2301 | |
2302 /* | |
2303 * sync one buffer, including negative blocks | |
2304 * | |
2305 * after this all the blocks are in the swap file | |
2306 * | |
2307 * Used for the :preserve command and when the original file has been | |
2308 * changed or deleted. | |
2309 * | |
2310 * when message is TRUE the success of preserving is reported | |
2311 */ | |
2312 void | |
7827
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2313 ml_preserve(buf_T *buf, int message) |
7 | 2314 { |
2315 bhdr_T *hp; | |
2316 linenr_T lnum; | |
2317 memfile_T *mfp = buf->b_ml.ml_mfp; | |
2318 int status; | |
2319 int got_int_save = got_int; | |
2320 | |
2321 if (mfp == NULL || mfp->mf_fname == NULL) | |
2322 { | |
2323 if (message) | |
2324 EMSG(_("E313: Cannot preserve, there is no swap file")); | |
2325 return; | |
2326 } | |
2327 | |
2328 /* We only want to stop when interrupted here, not when interrupted | |
2329 * before. */ | |
2330 got_int = FALSE; | |
2331 | |
2332 ml_flush_line(buf); /* flush buffered line */ | |
2333 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
2334 status = mf_sync(mfp, MFS_ALL | MFS_FLUSH); | |
2335 | |
2336 /* stack is invalid after mf_sync(.., MFS_ALL) */ | |
2337 buf->b_ml.ml_stack_top = 0; | |
2338 | |
2339 /* | |
2340 * Some of the data blocks may have been changed from negative to | |
2341 * positive block number. In that case the pointer blocks need to be | |
2342 * updated. | |
2343 * | |
2344 * We don't know in which pointer block the references are, so we visit | |
2345 * all data blocks until there are no more translations to be done (or | |
2346 * we hit the end of the file, which can only happen in case a write fails, | |
2347 * e.g. when file system if full). | |
2348 * ml_find_line() does the work by translating the negative block numbers | |
2349 * when getting the first line of each data block. | |
2350 */ | |
2351 if (mf_need_trans(mfp) && !got_int) | |
2352 { | |
2353 lnum = 1; | |
2354 while (mf_need_trans(mfp) && lnum <= buf->b_ml.ml_line_count) | |
2355 { | |
2356 hp = ml_find_line(buf, lnum, ML_FIND); | |
2357 if (hp == NULL) | |
2358 { | |
2359 status = FAIL; | |
2360 goto theend; | |
2361 } | |
2362 CHECK(buf->b_ml.ml_locked_low != lnum, "low != lnum"); | |
2363 lnum = buf->b_ml.ml_locked_high + 1; | |
2364 } | |
2365 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
2366 /* sync the updated pointer blocks */ | |
2367 if (mf_sync(mfp, MFS_ALL | MFS_FLUSH) == FAIL) | |
2368 status = FAIL; | |
2369 buf->b_ml.ml_stack_top = 0; /* stack is invalid now */ | |
2370 } | |
2371 theend: | |
2372 got_int |= got_int_save; | |
2373 | |
2374 if (message) | |
2375 { | |
2376 if (status == OK) | |
2377 MSG(_("File preserved")); | |
2378 else | |
2379 EMSG(_("E314: Preserve failed")); | |
2380 } | |
2381 } | |
2382 | |
2383 /* | |
2384 * NOTE: The pointer returned by the ml_get_*() functions only remains valid | |
2385 * until the next call! | |
2386 * line1 = ml_get(1); | |
2387 * line2 = ml_get(2); // line1 is now invalid! | |
2388 * Make a copy of the line if necessary. | |
2389 */ | |
2390 /* | |
2657 | 2391 * Return a pointer to a (read-only copy of a) line. |
7 | 2392 * |
2393 * On failure an error message is given and IObuff is returned (to avoid | |
2394 * having to check for error everywhere). | |
2395 */ | |
2396 char_u * | |
7827
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2397 ml_get(linenr_T lnum) |
7 | 2398 { |
2399 return ml_get_buf(curbuf, lnum, FALSE); | |
2400 } | |
2401 | |
2402 /* | |
2657 | 2403 * Return pointer to position "pos". |
7 | 2404 */ |
2405 char_u * | |
7827
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2406 ml_get_pos(pos_T *pos) |
7 | 2407 { |
2408 return (ml_get_buf(curbuf, pos->lnum, FALSE) + pos->col); | |
2409 } | |
2410 | |
2411 /* | |
2657 | 2412 * Return pointer to cursor line. |
7 | 2413 */ |
2414 char_u * | |
7827
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2415 ml_get_curline(void) |
7 | 2416 { |
2417 return ml_get_buf(curbuf, curwin->w_cursor.lnum, FALSE); | |
2418 } | |
2419 | |
2420 /* | |
2657 | 2421 * Return pointer to cursor position. |
7 | 2422 */ |
2423 char_u * | |
7827
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2424 ml_get_cursor(void) |
7 | 2425 { |
2426 return (ml_get_buf(curbuf, curwin->w_cursor.lnum, FALSE) + | |
2427 curwin->w_cursor.col); | |
2428 } | |
2429 | |
2430 /* | |
2657 | 2431 * Return a pointer to a line in a specific buffer |
7 | 2432 * |
2433 * "will_change": if TRUE mark the buffer dirty (chars in the line will be | |
2434 * changed) | |
2435 */ | |
2436 char_u * | |
7827
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2437 ml_get_buf( |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2438 buf_T *buf, |
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2439 linenr_T lnum, |
41789f16d6b2
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diff
changeset
|
2440 int will_change) /* line will be changed */ |
7 | 2441 { |
1068 | 2442 bhdr_T *hp; |
2443 DATA_BL *dp; | |
2444 char_u *ptr; | |
2445 static int recursive = 0; | |
7 | 2446 |
2447 if (lnum > buf->b_ml.ml_line_count) /* invalid line number */ | |
2448 { | |
1068 | 2449 if (recursive == 0) |
2450 { | |
2451 /* Avoid giving this message for a recursive call, may happen when | |
2452 * the GUI redraws part of the text. */ | |
2453 ++recursive; | |
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diff
changeset
|
2454 IEMSGN(_("E315: ml_get: invalid lnum: %ld"), lnum); |
1068 | 2455 --recursive; |
2456 } | |
7 | 2457 errorret: |
2458 STRCPY(IObuff, "???"); | |
2459 return IObuff; | |
2460 } | |
2461 if (lnum <= 0) /* pretend line 0 is line 1 */ | |
2462 lnum = 1; | |
2463 | |
2464 if (buf->b_ml.ml_mfp == NULL) /* there are no lines */ | |
2465 return (char_u *)""; | |
2466 | |
2108
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|
2467 /* |
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2468 * See if it is the same line as requested last time. |
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diff
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|
2469 * Otherwise may need to flush last used line. |
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diff
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2470 * Don't use the last used line when 'swapfile' is reset, need to load all |
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|
2471 * blocks. |
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|
2472 */ |
1066 | 2473 if (buf->b_ml.ml_line_lnum != lnum || mf_dont_release) |
7 | 2474 { |
2475 ml_flush_line(buf); | |
2476 | |
2477 /* | |
2478 * Find the data block containing the line. | |
2479 * This also fills the stack with the blocks from the root to the data | |
2480 * block and releases any locked block. | |
2481 */ | |
2482 if ((hp = ml_find_line(buf, lnum, ML_FIND)) == NULL) | |
2483 { | |
1068 | 2484 if (recursive == 0) |
2485 { | |
2486 /* Avoid giving this message for a recursive call, may happen | |
2487 * when the GUI redraws part of the text. */ | |
2488 ++recursive; | |
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10042
diff
changeset
|
2489 IEMSGN(_("E316: ml_get: cannot find line %ld"), lnum); |
1068 | 2490 --recursive; |
2491 } | |
7 | 2492 goto errorret; |
2493 } | |
2494 | |
2495 dp = (DATA_BL *)(hp->bh_data); | |
2496 | |
2497 ptr = (char_u *)dp + ((dp->db_index[lnum - buf->b_ml.ml_locked_low]) & DB_INDEX_MASK); | |
2498 buf->b_ml.ml_line_ptr = ptr; | |
2499 buf->b_ml.ml_line_lnum = lnum; | |
2500 buf->b_ml.ml_flags &= ~ML_LINE_DIRTY; | |
2501 } | |
2502 if (will_change) | |
2503 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
2504 | |
2505 return buf->b_ml.ml_line_ptr; | |
2506 } | |
2507 | |
2508 /* | |
2509 * Check if a line that was just obtained by a call to ml_get | |
2510 * is in allocated memory. | |
2511 */ | |
2512 int | |
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diff
changeset
|
2513 ml_line_alloced(void) |
7 | 2514 { |
2515 return (curbuf->b_ml.ml_flags & ML_LINE_DIRTY); | |
2516 } | |
2517 | |
2518 /* | |
2519 * Append a line after lnum (may be 0 to insert a line in front of the file). | |
2520 * "line" does not need to be allocated, but can't be another line in a | |
2521 * buffer, unlocking may make it invalid. | |
2522 * | |
2523 * newfile: TRUE when starting to edit a new file, meaning that pe_old_lnum | |
2524 * will be set for recovery | |
2525 * Check: The caller of this function should probably also call | |
2526 * appended_lines(). | |
2527 * | |
2528 * return FAIL for failure, OK otherwise | |
2529 */ | |
2530 int | |
7827
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diff
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|
2531 ml_append( |
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|
2532 linenr_T lnum, /* append after this line (can be 0) */ |
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diff
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|
2533 char_u *line, /* text of the new line */ |
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diff
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|
2534 colnr_T len, /* length of new line, including NUL, or 0 */ |
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parents:
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diff
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|
2535 int newfile) /* flag, see above */ |
7 | 2536 { |
2537 /* When starting up, we might still need to create the memfile */ | |
2394
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2538 if (curbuf->b_ml.ml_mfp == NULL && open_buffer(FALSE, NULL, 0) == FAIL) |
7 | 2539 return FAIL; |
2540 | |
2541 if (curbuf->b_ml.ml_line_lnum != 0) | |
2542 ml_flush_line(curbuf); | |
2543 return ml_append_int(curbuf, lnum, line, len, newfile, FALSE); | |
2544 } | |
2545 | |
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2546 #if defined(FEAT_SPELL) || defined(FEAT_QUICKFIX) || defined(PROTO) |
625 | 2547 /* |
2548 * Like ml_append() but for an arbitrary buffer. The buffer must already have | |
2549 * a memline. | |
2550 */ | |
2551 int | |
7827
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diff
changeset
|
2552 ml_append_buf( |
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diff
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|
2553 buf_T *buf, |
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diff
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|
2554 linenr_T lnum, /* append after this line (can be 0) */ |
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parents:
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diff
changeset
|
2555 char_u *line, /* text of the new line */ |
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parents:
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diff
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|
2556 colnr_T len, /* length of new line, including NUL, or 0 */ |
41789f16d6b2
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parents:
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diff
changeset
|
2557 int newfile) /* flag, see above */ |
625 | 2558 { |
2559 if (buf->b_ml.ml_mfp == NULL) | |
2560 return FAIL; | |
2561 | |
2562 if (buf->b_ml.ml_line_lnum != 0) | |
2563 ml_flush_line(buf); | |
2564 return ml_append_int(buf, lnum, line, len, newfile, FALSE); | |
2565 } | |
2566 #endif | |
2567 | |
7 | 2568 static int |
7827
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diff
changeset
|
2569 ml_append_int( |
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diff
changeset
|
2570 buf_T *buf, |
41789f16d6b2
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diff
changeset
|
2571 linenr_T lnum, /* append after this line (can be 0) */ |
41789f16d6b2
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parents:
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diff
changeset
|
2572 char_u *line, /* text of the new line */ |
41789f16d6b2
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parents:
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diff
changeset
|
2573 colnr_T len, /* length of line, including NUL, or 0 */ |
41789f16d6b2
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parents:
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diff
changeset
|
2574 int newfile, /* flag, see above */ |
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parents:
7803
diff
changeset
|
2575 int mark) /* mark the new line */ |
7 | 2576 { |
2577 int i; | |
2578 int line_count; /* number of indexes in current block */ | |
2579 int offset; | |
2580 int from, to; | |
2581 int space_needed; /* space needed for new line */ | |
2582 int page_size; | |
2583 int page_count; | |
2584 int db_idx; /* index for lnum in data block */ | |
2585 bhdr_T *hp; | |
2586 memfile_T *mfp; | |
2587 DATA_BL *dp; | |
2588 PTR_BL *pp; | |
2589 infoptr_T *ip; | |
2590 | |
2591 /* lnum out of range */ | |
2592 if (lnum > buf->b_ml.ml_line_count || buf->b_ml.ml_mfp == NULL) | |
2593 return FAIL; | |
2594 | |
2595 if (lowest_marked && lowest_marked > lnum) | |
2596 lowest_marked = lnum + 1; | |
2597 | |
2598 if (len == 0) | |
2599 len = (colnr_T)STRLEN(line) + 1; /* space needed for the text */ | |
2600 space_needed = len + INDEX_SIZE; /* space needed for text + index */ | |
2601 | |
2602 mfp = buf->b_ml.ml_mfp; | |
2603 page_size = mfp->mf_page_size; | |
2604 | |
2605 /* | |
2606 * find the data block containing the previous line | |
2607 * This also fills the stack with the blocks from the root to the data block | |
2608 * This also releases any locked block. | |
2609 */ | |
2610 if ((hp = ml_find_line(buf, lnum == 0 ? (linenr_T)1 : lnum, | |
2611 ML_INSERT)) == NULL) | |
2612 return FAIL; | |
2613 | |
2614 buf->b_ml.ml_flags &= ~ML_EMPTY; | |
2615 | |
2616 if (lnum == 0) /* got line one instead, correct db_idx */ | |
2617 db_idx = -1; /* careful, it is negative! */ | |
2618 else | |
2619 db_idx = lnum - buf->b_ml.ml_locked_low; | |
2620 /* get line count before the insertion */ | |
2621 line_count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low; | |
2622 | |
2623 dp = (DATA_BL *)(hp->bh_data); | |
2624 | |
2625 /* | |
2626 * If | |
2627 * - there is not enough room in the current block | |
2628 * - appending to the last line in the block | |
2629 * - not appending to the last line in the file | |
2630 * insert in front of the next block. | |
2631 */ | |
2632 if ((int)dp->db_free < space_needed && db_idx == line_count - 1 | |
2633 && lnum < buf->b_ml.ml_line_count) | |
2634 { | |
2635 /* | |
2636 * Now that the line is not going to be inserted in the block that we | |
2637 * expected, the line count has to be adjusted in the pointer blocks | |
2638 * by using ml_locked_lineadd. | |
2639 */ | |
2640 --(buf->b_ml.ml_locked_lineadd); | |
2641 --(buf->b_ml.ml_locked_high); | |
2642 if ((hp = ml_find_line(buf, lnum + 1, ML_INSERT)) == NULL) | |
2643 return FAIL; | |
2644 | |
2645 db_idx = -1; /* careful, it is negative! */ | |
2646 /* get line count before the insertion */ | |
2647 line_count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low; | |
2648 CHECK(buf->b_ml.ml_locked_low != lnum + 1, "locked_low != lnum + 1"); | |
2649 | |
2650 dp = (DATA_BL *)(hp->bh_data); | |
2651 } | |
2652 | |
2653 ++buf->b_ml.ml_line_count; | |
2654 | |
2655 if ((int)dp->db_free >= space_needed) /* enough room in data block */ | |
2656 { | |
2657 /* | |
2658 * Insert new line in existing data block, or in data block allocated above. | |
2659 */ | |
2660 dp->db_txt_start -= len; | |
2661 dp->db_free -= space_needed; | |
2662 ++(dp->db_line_count); | |
2663 | |
2664 /* | |
2665 * move the text of the lines that follow to the front | |
2666 * adjust the indexes of the lines that follow | |
2667 */ | |
2668 if (line_count > db_idx + 1) /* if there are following lines */ | |
2669 { | |
2670 /* | |
2671 * Offset is the start of the previous line. | |
2672 * This will become the character just after the new line. | |
2673 */ | |
2674 if (db_idx < 0) | |
2675 offset = dp->db_txt_end; | |
2676 else | |
2677 offset = ((dp->db_index[db_idx]) & DB_INDEX_MASK); | |
2678 mch_memmove((char *)dp + dp->db_txt_start, | |
2679 (char *)dp + dp->db_txt_start + len, | |
2680 (size_t)(offset - (dp->db_txt_start + len))); | |
2681 for (i = line_count - 1; i > db_idx; --i) | |
2682 dp->db_index[i + 1] = dp->db_index[i] - len; | |
2683 dp->db_index[db_idx + 1] = offset - len; | |
2684 } | |
2685 else /* add line at the end */ | |
2686 dp->db_index[db_idx + 1] = dp->db_txt_start; | |
2687 | |
2688 /* | |
2689 * copy the text into the block | |
2690 */ | |
2691 mch_memmove((char *)dp + dp->db_index[db_idx + 1], line, (size_t)len); | |
2692 if (mark) | |
2693 dp->db_index[db_idx + 1] |= DB_MARKED; | |
2694 | |
2695 /* | |
2696 * Mark the block dirty. | |
2697 */ | |
2698 buf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
2699 if (!newfile) | |
2700 buf->b_ml.ml_flags |= ML_LOCKED_POS; | |
2701 } | |
2702 else /* not enough space in data block */ | |
2703 { | |
2704 /* | |
2705 * If there is not enough room we have to create a new data block and copy some | |
2706 * lines into it. | |
2707 * Then we have to insert an entry in the pointer block. | |
2708 * If this pointer block also is full, we go up another block, and so on, up | |
2709 * to the root if necessary. | |
2710 * The line counts in the pointer blocks have already been adjusted by | |
2711 * ml_find_line(). | |
2712 */ | |
2713 long line_count_left, line_count_right; | |
2714 int page_count_left, page_count_right; | |
2715 bhdr_T *hp_left; | |
2716 bhdr_T *hp_right; | |
2717 bhdr_T *hp_new; | |
2718 int lines_moved; | |
2719 int data_moved = 0; /* init to shut up gcc */ | |
2720 int total_moved = 0; /* init to shut up gcc */ | |
2721 DATA_BL *dp_right, *dp_left; | |
2722 int stack_idx; | |
2723 int in_left; | |
2724 int lineadd; | |
2725 blocknr_T bnum_left, bnum_right; | |
2726 linenr_T lnum_left, lnum_right; | |
2727 int pb_idx; | |
2728 PTR_BL *pp_new; | |
2729 | |
2730 /* | |
2731 * We are going to allocate a new data block. Depending on the | |
2732 * situation it will be put to the left or right of the existing | |
2733 * block. If possible we put the new line in the left block and move | |
2734 * the lines after it to the right block. Otherwise the new line is | |
2735 * also put in the right block. This method is more efficient when | |
2736 * inserting a lot of lines at one place. | |
2737 */ | |
2738 if (db_idx < 0) /* left block is new, right block is existing */ | |
2739 { | |
2740 lines_moved = 0; | |
2741 in_left = TRUE; | |
2742 /* space_needed does not change */ | |
2743 } | |
2744 else /* left block is existing, right block is new */ | |
2745 { | |
2746 lines_moved = line_count - db_idx - 1; | |
2747 if (lines_moved == 0) | |
2748 in_left = FALSE; /* put new line in right block */ | |
2749 /* space_needed does not change */ | |
2750 else | |
2751 { | |
2752 data_moved = ((dp->db_index[db_idx]) & DB_INDEX_MASK) - | |
2753 dp->db_txt_start; | |
2754 total_moved = data_moved + lines_moved * INDEX_SIZE; | |
2755 if ((int)dp->db_free + total_moved >= space_needed) | |
2756 { | |
2757 in_left = TRUE; /* put new line in left block */ | |
2758 space_needed = total_moved; | |
2759 } | |
2760 else | |
2761 { | |
2762 in_left = FALSE; /* put new line in right block */ | |
2763 space_needed += total_moved; | |
2764 } | |
2765 } | |
2766 } | |
2767 | |
2768 page_count = ((space_needed + HEADER_SIZE) + page_size - 1) / page_size; | |
2769 if ((hp_new = ml_new_data(mfp, newfile, page_count)) == NULL) | |
2770 { | |
2771 /* correct line counts in pointer blocks */ | |
2772 --(buf->b_ml.ml_locked_lineadd); | |
2773 --(buf->b_ml.ml_locked_high); | |
2774 return FAIL; | |
2775 } | |
2776 if (db_idx < 0) /* left block is new */ | |
2777 { | |
2778 hp_left = hp_new; | |
2779 hp_right = hp; | |
2780 line_count_left = 0; | |
2781 line_count_right = line_count; | |
2782 } | |
2783 else /* right block is new */ | |
2784 { | |
2785 hp_left = hp; | |
2786 hp_right = hp_new; | |
2787 line_count_left = line_count; | |
2788 line_count_right = 0; | |
2789 } | |
2790 dp_right = (DATA_BL *)(hp_right->bh_data); | |
2791 dp_left = (DATA_BL *)(hp_left->bh_data); | |
2792 bnum_left = hp_left->bh_bnum; | |
2793 bnum_right = hp_right->bh_bnum; | |
2794 page_count_left = hp_left->bh_page_count; | |
2795 page_count_right = hp_right->bh_page_count; | |
2796 | |
2797 /* | |
2798 * May move the new line into the right/new block. | |
2799 */ | |
2800 if (!in_left) | |
2801 { | |
2802 dp_right->db_txt_start -= len; | |
2803 dp_right->db_free -= len + INDEX_SIZE; | |
2804 dp_right->db_index[0] = dp_right->db_txt_start; | |
2805 if (mark) | |
2806 dp_right->db_index[0] |= DB_MARKED; | |
2807 | |
2808 mch_memmove((char *)dp_right + dp_right->db_txt_start, | |
2809 line, (size_t)len); | |
2810 ++line_count_right; | |
2811 } | |
2812 /* | |
2813 * may move lines from the left/old block to the right/new one. | |
2814 */ | |
2815 if (lines_moved) | |
2816 { | |
2817 /* | |
2818 */ | |
2819 dp_right->db_txt_start -= data_moved; | |
2820 dp_right->db_free -= total_moved; | |
2821 mch_memmove((char *)dp_right + dp_right->db_txt_start, | |
2822 (char *)dp_left + dp_left->db_txt_start, | |
2823 (size_t)data_moved); | |
2824 offset = dp_right->db_txt_start - dp_left->db_txt_start; | |
2825 dp_left->db_txt_start += data_moved; | |
2826 dp_left->db_free += total_moved; | |
2827 | |
2828 /* | |
2829 * update indexes in the new block | |
2830 */ | |
2831 for (to = line_count_right, from = db_idx + 1; | |
2832 from < line_count_left; ++from, ++to) | |
2833 dp_right->db_index[to] = dp->db_index[from] + offset; | |
2834 line_count_right += lines_moved; | |
2835 line_count_left -= lines_moved; | |
2836 } | |
2837 | |
2838 /* | |
2839 * May move the new line into the left (old or new) block. | |
2840 */ | |
2841 if (in_left) | |
2842 { | |
2843 dp_left->db_txt_start -= len; | |
2844 dp_left->db_free -= len + INDEX_SIZE; | |
2845 dp_left->db_index[line_count_left] = dp_left->db_txt_start; | |
2846 if (mark) | |
2847 dp_left->db_index[line_count_left] |= DB_MARKED; | |
2848 mch_memmove((char *)dp_left + dp_left->db_txt_start, | |
2849 line, (size_t)len); | |
2850 ++line_count_left; | |
2851 } | |
2852 | |
2853 if (db_idx < 0) /* left block is new */ | |
2854 { | |
2855 lnum_left = lnum + 1; | |
2856 lnum_right = 0; | |
2857 } | |
2858 else /* right block is new */ | |
2859 { | |
2860 lnum_left = 0; | |
2861 if (in_left) | |
2862 lnum_right = lnum + 2; | |
2863 else | |
2864 lnum_right = lnum + 1; | |
2865 } | |
2866 dp_left->db_line_count = line_count_left; | |
2867 dp_right->db_line_count = line_count_right; | |
2868 | |
2869 /* | |
2870 * release the two data blocks | |
2871 * The new one (hp_new) already has a correct blocknumber. | |
2872 * The old one (hp, in ml_locked) gets a positive blocknumber if | |
2873 * we changed it and we are not editing a new file. | |
2874 */ | |
2875 if (lines_moved || in_left) | |
2876 buf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
2877 if (!newfile && db_idx >= 0 && in_left) | |
2878 buf->b_ml.ml_flags |= ML_LOCKED_POS; | |
2879 mf_put(mfp, hp_new, TRUE, FALSE); | |
2880 | |
2881 /* | |
2882 * flush the old data block | |
2883 * set ml_locked_lineadd to 0, because the updating of the | |
2884 * pointer blocks is done below | |
2885 */ | |
2886 lineadd = buf->b_ml.ml_locked_lineadd; | |
2887 buf->b_ml.ml_locked_lineadd = 0; | |
2888 ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush data block */ | |
2889 | |
2890 /* | |
2891 * update pointer blocks for the new data block | |
2892 */ | |
2893 for (stack_idx = buf->b_ml.ml_stack_top - 1; stack_idx >= 0; | |
2894 --stack_idx) | |
2895 { | |
2896 ip = &(buf->b_ml.ml_stack[stack_idx]); | |
2897 pb_idx = ip->ip_index; | |
2898 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
2899 return FAIL; | |
2900 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
2901 if (pp->pb_id != PTR_ID) | |
2902 { | |
10359
66f1b5bf3fa6
commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
2903 IEMSG(_("E317: pointer block id wrong 3")); |
7 | 2904 mf_put(mfp, hp, FALSE, FALSE); |
2905 return FAIL; | |
2906 } | |
2907 /* | |
2908 * TODO: If the pointer block is full and we are adding at the end | |
2909 * try to insert in front of the next block | |
2910 */ | |
2911 /* block not full, add one entry */ | |
2912 if (pp->pb_count < pp->pb_count_max) | |
2913 { | |
2914 if (pb_idx + 1 < (int)pp->pb_count) | |
2915 mch_memmove(&pp->pb_pointer[pb_idx + 2], | |
2916 &pp->pb_pointer[pb_idx + 1], | |
2917 (size_t)(pp->pb_count - pb_idx - 1) * sizeof(PTR_EN)); | |
2918 ++pp->pb_count; | |
2919 pp->pb_pointer[pb_idx].pe_line_count = line_count_left; | |
2920 pp->pb_pointer[pb_idx].pe_bnum = bnum_left; | |
2921 pp->pb_pointer[pb_idx].pe_page_count = page_count_left; | |
2922 pp->pb_pointer[pb_idx + 1].pe_line_count = line_count_right; | |
2923 pp->pb_pointer[pb_idx + 1].pe_bnum = bnum_right; | |
2924 pp->pb_pointer[pb_idx + 1].pe_page_count = page_count_right; | |
2925 | |
2926 if (lnum_left != 0) | |
2927 pp->pb_pointer[pb_idx].pe_old_lnum = lnum_left; | |
2928 if (lnum_right != 0) | |
2929 pp->pb_pointer[pb_idx + 1].pe_old_lnum = lnum_right; | |
2930 | |
2931 mf_put(mfp, hp, TRUE, FALSE); | |
2932 buf->b_ml.ml_stack_top = stack_idx + 1; /* truncate stack */ | |
2933 | |
2934 if (lineadd) | |
2935 { | |
2936 --(buf->b_ml.ml_stack_top); | |
1167 | 2937 /* fix line count for rest of blocks in the stack */ |
7 | 2938 ml_lineadd(buf, lineadd); |
2939 /* fix stack itself */ | |
2940 buf->b_ml.ml_stack[buf->b_ml.ml_stack_top].ip_high += | |
2941 lineadd; | |
2942 ++(buf->b_ml.ml_stack_top); | |
2943 } | |
2944 | |
2945 /* | |
2946 * We are finished, break the loop here. | |
2947 */ | |
2948 break; | |
2949 } | |
2950 else /* pointer block full */ | |
2951 { | |
2952 /* | |
2953 * split the pointer block | |
2954 * allocate a new pointer block | |
2955 * move some of the pointer into the new block | |
2956 * prepare for updating the parent block | |
2957 */ | |
2958 for (;;) /* do this twice when splitting block 1 */ | |
2959 { | |
2960 hp_new = ml_new_ptr(mfp); | |
2961 if (hp_new == NULL) /* TODO: try to fix tree */ | |
2962 return FAIL; | |
2963 pp_new = (PTR_BL *)(hp_new->bh_data); | |
2964 | |
2965 if (hp->bh_bnum != 1) | |
2966 break; | |
2967 | |
2968 /* | |
2969 * if block 1 becomes full the tree is given an extra level | |
2970 * The pointers from block 1 are moved into the new block. | |
2971 * block 1 is updated to point to the new block | |
2972 * then continue to split the new block | |
2973 */ | |
2974 mch_memmove(pp_new, pp, (size_t)page_size); | |
2975 pp->pb_count = 1; | |
2976 pp->pb_pointer[0].pe_bnum = hp_new->bh_bnum; | |
2977 pp->pb_pointer[0].pe_line_count = buf->b_ml.ml_line_count; | |
2978 pp->pb_pointer[0].pe_old_lnum = 1; | |
2979 pp->pb_pointer[0].pe_page_count = 1; | |
2980 mf_put(mfp, hp, TRUE, FALSE); /* release block 1 */ | |
2981 hp = hp_new; /* new block is to be split */ | |
2982 pp = pp_new; | |
2983 CHECK(stack_idx != 0, _("stack_idx should be 0")); | |
2984 ip->ip_index = 0; | |
2985 ++stack_idx; /* do block 1 again later */ | |
2986 } | |
2987 /* | |
2988 * move the pointers after the current one to the new block | |
2989 * If there are none, the new entry will be in the new block. | |
2990 */ | |
2991 total_moved = pp->pb_count - pb_idx - 1; | |
2992 if (total_moved) | |
2993 { | |
2994 mch_memmove(&pp_new->pb_pointer[0], | |
2995 &pp->pb_pointer[pb_idx + 1], | |
2996 (size_t)(total_moved) * sizeof(PTR_EN)); | |
2997 pp_new->pb_count = total_moved; | |
2998 pp->pb_count -= total_moved - 1; | |
2999 pp->pb_pointer[pb_idx + 1].pe_bnum = bnum_right; | |
3000 pp->pb_pointer[pb_idx + 1].pe_line_count = line_count_right; | |
3001 pp->pb_pointer[pb_idx + 1].pe_page_count = page_count_right; | |
3002 if (lnum_right) | |
3003 pp->pb_pointer[pb_idx + 1].pe_old_lnum = lnum_right; | |
3004 } | |
3005 else | |
3006 { | |
3007 pp_new->pb_count = 1; | |
3008 pp_new->pb_pointer[0].pe_bnum = bnum_right; | |
3009 pp_new->pb_pointer[0].pe_line_count = line_count_right; | |
3010 pp_new->pb_pointer[0].pe_page_count = page_count_right; | |
3011 pp_new->pb_pointer[0].pe_old_lnum = lnum_right; | |
3012 } | |
3013 pp->pb_pointer[pb_idx].pe_bnum = bnum_left; | |
3014 pp->pb_pointer[pb_idx].pe_line_count = line_count_left; | |
3015 pp->pb_pointer[pb_idx].pe_page_count = page_count_left; | |
3016 if (lnum_left) | |
3017 pp->pb_pointer[pb_idx].pe_old_lnum = lnum_left; | |
3018 lnum_left = 0; | |
3019 lnum_right = 0; | |
3020 | |
3021 /* | |
3022 * recompute line counts | |
3023 */ | |
3024 line_count_right = 0; | |
3025 for (i = 0; i < (int)pp_new->pb_count; ++i) | |
3026 line_count_right += pp_new->pb_pointer[i].pe_line_count; | |
3027 line_count_left = 0; | |
3028 for (i = 0; i < (int)pp->pb_count; ++i) | |
3029 line_count_left += pp->pb_pointer[i].pe_line_count; | |
3030 | |
3031 bnum_left = hp->bh_bnum; | |
3032 bnum_right = hp_new->bh_bnum; | |
3033 page_count_left = 1; | |
3034 page_count_right = 1; | |
3035 mf_put(mfp, hp, TRUE, FALSE); | |
3036 mf_put(mfp, hp_new, TRUE, FALSE); | |
3037 } | |
3038 } | |
3039 | |
3040 /* | |
3041 * Safety check: fallen out of for loop? | |
3042 */ | |
3043 if (stack_idx < 0) | |
3044 { | |
10359
66f1b5bf3fa6
commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
3045 IEMSG(_("E318: Updated too many blocks?")); |
7 | 3046 buf->b_ml.ml_stack_top = 0; /* invalidate stack */ |
3047 } | |
3048 } | |
3049 | |
3050 #ifdef FEAT_BYTEOFF | |
3051 /* The line was inserted below 'lnum' */ | |
3052 ml_updatechunk(buf, lnum + 1, (long)len, ML_CHNK_ADDLINE); | |
3053 #endif | |
3054 #ifdef FEAT_NETBEANS_INTG | |
2210 | 3055 if (netbeans_active()) |
7 | 3056 { |
3057 if (STRLEN(line) > 0) | |
835 | 3058 netbeans_inserted(buf, lnum+1, (colnr_T)0, line, (int)STRLEN(line)); |
34 | 3059 netbeans_inserted(buf, lnum+1, (colnr_T)STRLEN(line), |
7 | 3060 (char_u *)"\n", 1); |
3061 } | |
3062 #endif | |
8493
caed4b2d305f
commit https://github.com/vim/vim/commit/509ce2a558e7e0c03242e32e844255af52f1c821
Christian Brabandt <cb@256bit.org>
parents:
8422
diff
changeset
|
3063 #ifdef FEAT_JOB_CHANNEL |
8422
5d2c84be23b5
commit https://github.com/vim/vim/commit/99ef06296f3c37490511c03786a2c8672e015c56
Christian Brabandt <cb@256bit.org>
parents:
8212
diff
changeset
|
3064 if (buf->b_write_to_channel) |
5d2c84be23b5
commit https://github.com/vim/vim/commit/99ef06296f3c37490511c03786a2c8672e015c56
Christian Brabandt <cb@256bit.org>
parents:
8212
diff
changeset
|
3065 channel_write_new_lines(buf); |
5d2c84be23b5
commit https://github.com/vim/vim/commit/99ef06296f3c37490511c03786a2c8672e015c56
Christian Brabandt <cb@256bit.org>
parents:
8212
diff
changeset
|
3066 #endif |
5d2c84be23b5
commit https://github.com/vim/vim/commit/99ef06296f3c37490511c03786a2c8672e015c56
Christian Brabandt <cb@256bit.org>
parents:
8212
diff
changeset
|
3067 |
7 | 3068 return OK; |
3069 } | |
3070 | |
3071 /* | |
625 | 3072 * Replace line lnum, with buffering, in current buffer. |
7 | 3073 * |
720 | 3074 * If "copy" is TRUE, make a copy of the line, otherwise the line has been |
7 | 3075 * copied to allocated memory already. |
3076 * | |
3077 * Check: The caller of this function should probably also call | |
3078 * changed_lines(), unless update_screen(NOT_VALID) is used. | |
3079 * | |
3080 * return FAIL for failure, OK otherwise | |
3081 */ | |
3082 int | |
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41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3083 ml_replace(linenr_T lnum, char_u *line, int copy) |
7 | 3084 { |
3085 if (line == NULL) /* just checking... */ | |
3086 return FAIL; | |
3087 | |
3088 /* When starting up, we might still need to create the memfile */ | |
2394
a3aca345aafa
Add the 'undoreload' option to be able to undo a file reload.
Bram Moolenaar <bram@vim.org>
parents:
2360
diff
changeset
|
3089 if (curbuf->b_ml.ml_mfp == NULL && open_buffer(FALSE, NULL, 0) == FAIL) |
7 | 3090 return FAIL; |
3091 | |
3092 if (copy && (line = vim_strsave(line)) == NULL) /* allocate memory */ | |
3093 return FAIL; | |
3094 #ifdef FEAT_NETBEANS_INTG | |
2210 | 3095 if (netbeans_active()) |
7 | 3096 { |
3097 netbeans_removed(curbuf, lnum, 0, (long)STRLEN(ml_get(lnum))); | |
835 | 3098 netbeans_inserted(curbuf, lnum, 0, line, (int)STRLEN(line)); |
7 | 3099 } |
3100 #endif | |
3101 if (curbuf->b_ml.ml_line_lnum != lnum) /* other line buffered */ | |
3102 ml_flush_line(curbuf); /* flush it */ | |
3103 else if (curbuf->b_ml.ml_flags & ML_LINE_DIRTY) /* same line allocated */ | |
3104 vim_free(curbuf->b_ml.ml_line_ptr); /* free it */ | |
3105 curbuf->b_ml.ml_line_ptr = line; | |
3106 curbuf->b_ml.ml_line_lnum = lnum; | |
3107 curbuf->b_ml.ml_flags = (curbuf->b_ml.ml_flags | ML_LINE_DIRTY) & ~ML_EMPTY; | |
3108 | |
3109 return OK; | |
3110 } | |
3111 | |
3112 /* | |
12477
68d7bc045dbe
patch 8.0.1118: FEAT_WINDOWS adds a lot of #ifdefs
Christian Brabandt <cb@256bit.org>
parents:
11158
diff
changeset
|
3113 * Delete line "lnum" in the current buffer. |
68d7bc045dbe
patch 8.0.1118: FEAT_WINDOWS adds a lot of #ifdefs
Christian Brabandt <cb@256bit.org>
parents:
11158
diff
changeset
|
3114 * When "message" is TRUE may give a "No lines in buffer" message. |
7 | 3115 * |
3116 * Check: The caller of this function should probably also call | |
3117 * deleted_lines() after this. | |
3118 * | |
3119 * return FAIL for failure, OK otherwise | |
3120 */ | |
3121 int | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3122 ml_delete(linenr_T lnum, int message) |
7 | 3123 { |
3124 ml_flush_line(curbuf); | |
3125 return ml_delete_int(curbuf, lnum, message); | |
3126 } | |
3127 | |
3128 static int | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3129 ml_delete_int(buf_T *buf, linenr_T lnum, int message) |
7 | 3130 { |
3131 bhdr_T *hp; | |
3132 memfile_T *mfp; | |
3133 DATA_BL *dp; | |
3134 PTR_BL *pp; | |
3135 infoptr_T *ip; | |
3136 int count; /* number of entries in block */ | |
3137 int idx; | |
3138 int stack_idx; | |
3139 int text_start; | |
3140 int line_start; | |
3141 long line_size; | |
3142 int i; | |
3143 | |
3144 if (lnum < 1 || lnum > buf->b_ml.ml_line_count) | |
3145 return FAIL; | |
3146 | |
3147 if (lowest_marked && lowest_marked > lnum) | |
3148 lowest_marked--; | |
3149 | |
3150 /* | |
3151 * If the file becomes empty the last line is replaced by an empty line. | |
3152 */ | |
3153 if (buf->b_ml.ml_line_count == 1) /* file becomes empty */ | |
3154 { | |
3155 if (message | |
3156 #ifdef FEAT_NETBEANS_INTG | |
3157 && !netbeansSuppressNoLines | |
3158 #endif | |
3159 ) | |
680 | 3160 set_keep_msg((char_u *)_(no_lines_msg), 0); |
3161 | |
4352 | 3162 /* FEAT_BYTEOFF already handled in there, don't worry 'bout it below */ |
7 | 3163 i = ml_replace((linenr_T)1, (char_u *)"", TRUE); |
3164 buf->b_ml.ml_flags |= ML_EMPTY; | |
3165 | |
3166 return i; | |
3167 } | |
3168 | |
3169 /* | |
3170 * find the data block containing the line | |
3171 * This also fills the stack with the blocks from the root to the data block | |
3172 * This also releases any locked block. | |
3173 */ | |
3174 mfp = buf->b_ml.ml_mfp; | |
3175 if (mfp == NULL) | |
3176 return FAIL; | |
3177 | |
3178 if ((hp = ml_find_line(buf, lnum, ML_DELETE)) == NULL) | |
3179 return FAIL; | |
3180 | |
3181 dp = (DATA_BL *)(hp->bh_data); | |
3182 /* compute line count before the delete */ | |
3183 count = (long)(buf->b_ml.ml_locked_high) | |
3184 - (long)(buf->b_ml.ml_locked_low) + 2; | |
3185 idx = lnum - buf->b_ml.ml_locked_low; | |
3186 | |
3187 --buf->b_ml.ml_line_count; | |
3188 | |
3189 line_start = ((dp->db_index[idx]) & DB_INDEX_MASK); | |
3190 if (idx == 0) /* first line in block, text at the end */ | |
3191 line_size = dp->db_txt_end - line_start; | |
3192 else | |
3193 line_size = ((dp->db_index[idx - 1]) & DB_INDEX_MASK) - line_start; | |
3194 | |
3195 #ifdef FEAT_NETBEANS_INTG | |
2210 | 3196 if (netbeans_active()) |
34 | 3197 netbeans_removed(buf, lnum, 0, (long)line_size); |
7 | 3198 #endif |
3199 | |
3200 /* | |
3201 * special case: If there is only one line in the data block it becomes empty. | |
3202 * Then we have to remove the entry, pointing to this data block, from the | |
3203 * pointer block. If this pointer block also becomes empty, we go up another | |
3204 * block, and so on, up to the root if necessary. | |
3205 * The line counts in the pointer blocks have already been adjusted by | |
3206 * ml_find_line(). | |
3207 */ | |
3208 if (count == 1) | |
3209 { | |
3210 mf_free(mfp, hp); /* free the data block */ | |
3211 buf->b_ml.ml_locked = NULL; | |
3212 | |
2823 | 3213 for (stack_idx = buf->b_ml.ml_stack_top - 1; stack_idx >= 0; |
3214 --stack_idx) | |
7 | 3215 { |
3216 buf->b_ml.ml_stack_top = 0; /* stack is invalid when failing */ | |
3217 ip = &(buf->b_ml.ml_stack[stack_idx]); | |
3218 idx = ip->ip_index; | |
3219 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
3220 return FAIL; | |
3221 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
3222 if (pp->pb_id != PTR_ID) | |
3223 { | |
10359
66f1b5bf3fa6
commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
3224 IEMSG(_("E317: pointer block id wrong 4")); |
7 | 3225 mf_put(mfp, hp, FALSE, FALSE); |
3226 return FAIL; | |
3227 } | |
3228 count = --(pp->pb_count); | |
3229 if (count == 0) /* the pointer block becomes empty! */ | |
3230 mf_free(mfp, hp); | |
3231 else | |
3232 { | |
3233 if (count != idx) /* move entries after the deleted one */ | |
3234 mch_memmove(&pp->pb_pointer[idx], &pp->pb_pointer[idx + 1], | |
3235 (size_t)(count - idx) * sizeof(PTR_EN)); | |
3236 mf_put(mfp, hp, TRUE, FALSE); | |
3237 | |
3238 buf->b_ml.ml_stack_top = stack_idx; /* truncate stack */ | |
1167 | 3239 /* fix line count for rest of blocks in the stack */ |
3240 if (buf->b_ml.ml_locked_lineadd != 0) | |
7 | 3241 { |
3242 ml_lineadd(buf, buf->b_ml.ml_locked_lineadd); | |
3243 buf->b_ml.ml_stack[buf->b_ml.ml_stack_top].ip_high += | |
1167 | 3244 buf->b_ml.ml_locked_lineadd; |
7 | 3245 } |
3246 ++(buf->b_ml.ml_stack_top); | |
3247 | |
3248 break; | |
3249 } | |
3250 } | |
3251 CHECK(stack_idx < 0, _("deleted block 1?")); | |
3252 } | |
3253 else | |
3254 { | |
3255 /* | |
3256 * delete the text by moving the next lines forwards | |
3257 */ | |
3258 text_start = dp->db_txt_start; | |
3259 mch_memmove((char *)dp + text_start + line_size, | |
3260 (char *)dp + text_start, (size_t)(line_start - text_start)); | |
3261 | |
3262 /* | |
3263 * delete the index by moving the next indexes backwards | |
3264 * Adjust the indexes for the text movement. | |
3265 */ | |
3266 for (i = idx; i < count - 1; ++i) | |
3267 dp->db_index[i] = dp->db_index[i + 1] + line_size; | |
3268 | |
3269 dp->db_free += line_size + INDEX_SIZE; | |
3270 dp->db_txt_start += line_size; | |
3271 --(dp->db_line_count); | |
3272 | |
3273 /* | |
3274 * mark the block dirty and make sure it is in the file (for recovery) | |
3275 */ | |
3276 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
3277 } | |
3278 | |
3279 #ifdef FEAT_BYTEOFF | |
3280 ml_updatechunk(buf, lnum, line_size, ML_CHNK_DELLINE); | |
3281 #endif | |
3282 return OK; | |
3283 } | |
3284 | |
3285 /* | |
3286 * set the B_MARKED flag for line 'lnum' | |
3287 */ | |
3288 void | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3289 ml_setmarked(linenr_T lnum) |
7 | 3290 { |
3291 bhdr_T *hp; | |
3292 DATA_BL *dp; | |
3293 /* invalid line number */ | |
3294 if (lnum < 1 || lnum > curbuf->b_ml.ml_line_count | |
3295 || curbuf->b_ml.ml_mfp == NULL) | |
3296 return; /* give error message? */ | |
3297 | |
3298 if (lowest_marked == 0 || lowest_marked > lnum) | |
3299 lowest_marked = lnum; | |
3300 | |
3301 /* | |
3302 * find the data block containing the line | |
3303 * This also fills the stack with the blocks from the root to the data block | |
3304 * This also releases any locked block. | |
3305 */ | |
3306 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
3307 return; /* give error message? */ | |
3308 | |
3309 dp = (DATA_BL *)(hp->bh_data); | |
3310 dp->db_index[lnum - curbuf->b_ml.ml_locked_low] |= DB_MARKED; | |
3311 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
3312 } | |
3313 | |
3314 /* | |
3315 * find the first line with its B_MARKED flag set | |
3316 */ | |
3317 linenr_T | |
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3318 ml_firstmarked(void) |
7 | 3319 { |
3320 bhdr_T *hp; | |
3321 DATA_BL *dp; | |
3322 linenr_T lnum; | |
3323 int i; | |
3324 | |
3325 if (curbuf->b_ml.ml_mfp == NULL) | |
3326 return (linenr_T) 0; | |
3327 | |
3328 /* | |
3329 * The search starts with lowest_marked line. This is the last line where | |
3330 * a mark was found, adjusted by inserting/deleting lines. | |
3331 */ | |
3332 for (lnum = lowest_marked; lnum <= curbuf->b_ml.ml_line_count; ) | |
3333 { | |
3334 /* | |
3335 * Find the data block containing the line. | |
3336 * This also fills the stack with the blocks from the root to the data | |
3337 * block This also releases any locked block. | |
3338 */ | |
3339 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
3340 return (linenr_T)0; /* give error message? */ | |
3341 | |
3342 dp = (DATA_BL *)(hp->bh_data); | |
3343 | |
3344 for (i = lnum - curbuf->b_ml.ml_locked_low; | |
3345 lnum <= curbuf->b_ml.ml_locked_high; ++i, ++lnum) | |
3346 if ((dp->db_index[i]) & DB_MARKED) | |
3347 { | |
3348 (dp->db_index[i]) &= DB_INDEX_MASK; | |
3349 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
3350 lowest_marked = lnum + 1; | |
3351 return lnum; | |
3352 } | |
3353 } | |
3354 | |
3355 return (linenr_T) 0; | |
3356 } | |
3357 | |
3358 /* | |
3359 * clear all DB_MARKED flags | |
3360 */ | |
3361 void | |
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3362 ml_clearmarked(void) |
7 | 3363 { |
3364 bhdr_T *hp; | |
3365 DATA_BL *dp; | |
3366 linenr_T lnum; | |
3367 int i; | |
3368 | |
3369 if (curbuf->b_ml.ml_mfp == NULL) /* nothing to do */ | |
3370 return; | |
3371 | |
3372 /* | |
3373 * The search starts with line lowest_marked. | |
3374 */ | |
3375 for (lnum = lowest_marked; lnum <= curbuf->b_ml.ml_line_count; ) | |
3376 { | |
3377 /* | |
3378 * Find the data block containing the line. | |
3379 * This also fills the stack with the blocks from the root to the data | |
3380 * block and releases any locked block. | |
3381 */ | |
3382 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
3383 return; /* give error message? */ | |
3384 | |
3385 dp = (DATA_BL *)(hp->bh_data); | |
3386 | |
3387 for (i = lnum - curbuf->b_ml.ml_locked_low; | |
3388 lnum <= curbuf->b_ml.ml_locked_high; ++i, ++lnum) | |
3389 if ((dp->db_index[i]) & DB_MARKED) | |
3390 { | |
3391 (dp->db_index[i]) &= DB_INDEX_MASK; | |
3392 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
3393 } | |
3394 } | |
3395 | |
3396 lowest_marked = 0; | |
3397 return; | |
3398 } | |
3399 | |
3400 /* | |
3401 * flush ml_line if necessary | |
3402 */ | |
3403 static void | |
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3404 ml_flush_line(buf_T *buf) |
7 | 3405 { |
3406 bhdr_T *hp; | |
3407 DATA_BL *dp; | |
3408 linenr_T lnum; | |
3409 char_u *new_line; | |
3410 char_u *old_line; | |
3411 colnr_T new_len; | |
3412 int old_len; | |
3413 int extra; | |
3414 int idx; | |
3415 int start; | |
3416 int count; | |
3417 int i; | |
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diff
changeset
|
3418 static int entered = FALSE; |
7 | 3419 |
3420 if (buf->b_ml.ml_line_lnum == 0 || buf->b_ml.ml_mfp == NULL) | |
3421 return; /* nothing to do */ | |
3422 | |
3423 if (buf->b_ml.ml_flags & ML_LINE_DIRTY) | |
3424 { | |
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diff
changeset
|
3425 /* This code doesn't work recursively, but Netbeans may call back here |
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parents:
2003
diff
changeset
|
3426 * when obtaining the cursor position. */ |
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updated for version 7.2.359
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diff
changeset
|
3427 if (entered) |
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Bram Moolenaar <bram@zimbu.org>
parents:
2003
diff
changeset
|
3428 return; |
903fcd726d90
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Bram Moolenaar <bram@zimbu.org>
parents:
2003
diff
changeset
|
3429 entered = TRUE; |
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Bram Moolenaar <bram@zimbu.org>
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diff
changeset
|
3430 |
7 | 3431 lnum = buf->b_ml.ml_line_lnum; |
3432 new_line = buf->b_ml.ml_line_ptr; | |
3433 | |
3434 hp = ml_find_line(buf, lnum, ML_FIND); | |
3435 if (hp == NULL) | |
10359
66f1b5bf3fa6
commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
3436 IEMSGN(_("E320: Cannot find line %ld"), lnum); |
7 | 3437 else |
3438 { | |
3439 dp = (DATA_BL *)(hp->bh_data); | |
3440 idx = lnum - buf->b_ml.ml_locked_low; | |
3441 start = ((dp->db_index[idx]) & DB_INDEX_MASK); | |
3442 old_line = (char_u *)dp + start; | |
3443 if (idx == 0) /* line is last in block */ | |
3444 old_len = dp->db_txt_end - start; | |
3445 else /* text of previous line follows */ | |
3446 old_len = (dp->db_index[idx - 1] & DB_INDEX_MASK) - start; | |
3447 new_len = (colnr_T)STRLEN(new_line) + 1; | |
3448 extra = new_len - old_len; /* negative if lines gets smaller */ | |
3449 | |
3450 /* | |
3451 * if new line fits in data block, replace directly | |
3452 */ | |
3453 if ((int)dp->db_free >= extra) | |
3454 { | |
3455 /* if the length changes and there are following lines */ | |
3456 count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low + 1; | |
3457 if (extra != 0 && idx < count - 1) | |
3458 { | |
3459 /* move text of following lines */ | |
3460 mch_memmove((char *)dp + dp->db_txt_start - extra, | |
3461 (char *)dp + dp->db_txt_start, | |
3462 (size_t)(start - dp->db_txt_start)); | |
3463 | |
3464 /* adjust pointers of this and following lines */ | |
3465 for (i = idx + 1; i < count; ++i) | |
3466 dp->db_index[i] -= extra; | |
3467 } | |
3468 dp->db_index[idx] -= extra; | |
3469 | |
3470 /* adjust free space */ | |
3471 dp->db_free -= extra; | |
3472 dp->db_txt_start -= extra; | |
3473 | |
3474 /* copy new line into the data block */ | |
3475 mch_memmove(old_line - extra, new_line, (size_t)new_len); | |
3476 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
3477 #ifdef FEAT_BYTEOFF | |
3478 /* The else case is already covered by the insert and delete */ | |
3479 ml_updatechunk(buf, lnum, (long)extra, ML_CHNK_UPDLINE); | |
3480 #endif | |
3481 } | |
3482 else | |
3483 { | |
3484 /* | |
3485 * Cannot do it in one data block: Delete and append. | |
3486 * Append first, because ml_delete_int() cannot delete the | |
3487 * last line in a buffer, which causes trouble for a buffer | |
3488 * that has only one line. | |
3489 * Don't forget to copy the mark! | |
3490 */ | |
3491 /* How about handling errors??? */ | |
3492 (void)ml_append_int(buf, lnum, new_line, new_len, FALSE, | |
3493 (dp->db_index[idx] & DB_MARKED)); | |
3494 (void)ml_delete_int(buf, lnum, FALSE); | |
3495 } | |
3496 } | |
3497 vim_free(new_line); | |
2075
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2003
diff
changeset
|
3498 |
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diff
changeset
|
3499 entered = FALSE; |
7 | 3500 } |
3501 | |
3502 buf->b_ml.ml_line_lnum = 0; | |
3503 } | |
3504 | |
3505 /* | |
3506 * create a new, empty, data block | |
3507 */ | |
3508 static bhdr_T * | |
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3509 ml_new_data(memfile_T *mfp, int negative, int page_count) |
7 | 3510 { |
3511 bhdr_T *hp; | |
3512 DATA_BL *dp; | |
3513 | |
3514 if ((hp = mf_new(mfp, negative, page_count)) == NULL) | |
3515 return NULL; | |
3516 | |
3517 dp = (DATA_BL *)(hp->bh_data); | |
3518 dp->db_id = DATA_ID; | |
3519 dp->db_txt_start = dp->db_txt_end = page_count * mfp->mf_page_size; | |
3520 dp->db_free = dp->db_txt_start - HEADER_SIZE; | |
3521 dp->db_line_count = 0; | |
3522 | |
3523 return hp; | |
3524 } | |
3525 | |
3526 /* | |
3527 * create a new, empty, pointer block | |
3528 */ | |
3529 static bhdr_T * | |
7827
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3530 ml_new_ptr(memfile_T *mfp) |
7 | 3531 { |
3532 bhdr_T *hp; | |
3533 PTR_BL *pp; | |
3534 | |
3535 if ((hp = mf_new(mfp, FALSE, 1)) == NULL) | |
3536 return NULL; | |
3537 | |
3538 pp = (PTR_BL *)(hp->bh_data); | |
3539 pp->pb_id = PTR_ID; | |
3540 pp->pb_count = 0; | |
2240
6b4879aea261
Add test for gettabvar() and settabvar().
Bram Moolenaar <bram@vim.org>
parents:
2221
diff
changeset
|
3541 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
|
3542 / sizeof(PTR_EN) + 1); |
7 | 3543 |
3544 return hp; | |
3545 } | |
3546 | |
3547 /* | |
3548 * lookup line 'lnum' in a memline | |
3549 * | |
3550 * action: if ML_DELETE or ML_INSERT the line count is updated while searching | |
3551 * if ML_FLUSH only flush a locked block | |
3552 * if ML_FIND just find the line | |
3553 * | |
3554 * If the block was found it is locked and put in ml_locked. | |
3555 * The stack is updated to lead to the locked block. The ip_high field in | |
3556 * the stack is updated to reflect the last line in the block AFTER the | |
3557 * insert or delete, also if the pointer block has not been updated yet. But | |
1167 | 3558 * if ml_locked != NULL ml_locked_lineadd must be added to ip_high. |
7 | 3559 * |
3560 * return: NULL for failure, pointer to block header otherwise | |
3561 */ | |
3562 static bhdr_T * | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3563 ml_find_line(buf_T *buf, linenr_T lnum, int action) |
7 | 3564 { |
3565 DATA_BL *dp; | |
3566 PTR_BL *pp; | |
3567 infoptr_T *ip; | |
3568 bhdr_T *hp; | |
3569 memfile_T *mfp; | |
3570 linenr_T t; | |
3571 blocknr_T bnum, bnum2; | |
3572 int dirty; | |
3573 linenr_T low, high; | |
3574 int top; | |
3575 int page_count; | |
3576 int idx; | |
3577 | |
3578 mfp = buf->b_ml.ml_mfp; | |
3579 | |
3580 /* | |
3581 * If there is a locked block check if the wanted line is in it. | |
3582 * If not, flush and release the locked block. | |
3583 * Don't do this for ML_INSERT_SAME, because the stack need to be updated. | |
3584 * Don't do this for ML_FLUSH, because we want to flush the locked block. | |
1066 | 3585 * Don't do this when 'swapfile' is reset, we want to load all the blocks. |
7 | 3586 */ |
3587 if (buf->b_ml.ml_locked) | |
3588 { | |
1066 | 3589 if (ML_SIMPLE(action) |
3590 && buf->b_ml.ml_locked_low <= lnum | |
3591 && buf->b_ml.ml_locked_high >= lnum | |
3592 && !mf_dont_release) | |
7 | 3593 { |
1066 | 3594 /* remember to update pointer blocks and stack later */ |
7 | 3595 if (action == ML_INSERT) |
3596 { | |
3597 ++(buf->b_ml.ml_locked_lineadd); | |
3598 ++(buf->b_ml.ml_locked_high); | |
3599 } | |
3600 else if (action == ML_DELETE) | |
3601 { | |
3602 --(buf->b_ml.ml_locked_lineadd); | |
3603 --(buf->b_ml.ml_locked_high); | |
3604 } | |
3605 return (buf->b_ml.ml_locked); | |
3606 } | |
3607 | |
3608 mf_put(mfp, buf->b_ml.ml_locked, buf->b_ml.ml_flags & ML_LOCKED_DIRTY, | |
3609 buf->b_ml.ml_flags & ML_LOCKED_POS); | |
3610 buf->b_ml.ml_locked = NULL; | |
3611 | |
1167 | 3612 /* |
3613 * If lines have been added or deleted in the locked block, need to | |
3614 * update the line count in pointer blocks. | |
3615 */ | |
3616 if (buf->b_ml.ml_locked_lineadd != 0) | |
7 | 3617 ml_lineadd(buf, buf->b_ml.ml_locked_lineadd); |
3618 } | |
3619 | |
3620 if (action == ML_FLUSH) /* nothing else to do */ | |
3621 return NULL; | |
3622 | |
3623 bnum = 1; /* start at the root of the tree */ | |
3624 page_count = 1; | |
3625 low = 1; | |
3626 high = buf->b_ml.ml_line_count; | |
3627 | |
3628 if (action == ML_FIND) /* first try stack entries */ | |
3629 { | |
3630 for (top = buf->b_ml.ml_stack_top - 1; top >= 0; --top) | |
3631 { | |
3632 ip = &(buf->b_ml.ml_stack[top]); | |
3633 if (ip->ip_low <= lnum && ip->ip_high >= lnum) | |
3634 { | |
3635 bnum = ip->ip_bnum; | |
3636 low = ip->ip_low; | |
3637 high = ip->ip_high; | |
3638 buf->b_ml.ml_stack_top = top; /* truncate stack at prev entry */ | |
3639 break; | |
3640 } | |
3641 } | |
3642 if (top < 0) | |
3643 buf->b_ml.ml_stack_top = 0; /* not found, start at the root */ | |
3644 } | |
3645 else /* ML_DELETE or ML_INSERT */ | |
3646 buf->b_ml.ml_stack_top = 0; /* start at the root */ | |
3647 | |
3648 /* | |
3649 * search downwards in the tree until a data block is found | |
3650 */ | |
3651 for (;;) | |
3652 { | |
3653 if ((hp = mf_get(mfp, bnum, page_count)) == NULL) | |
3654 goto error_noblock; | |
3655 | |
3656 /* | |
3657 * update high for insert/delete | |
3658 */ | |
3659 if (action == ML_INSERT) | |
3660 ++high; | |
3661 else if (action == ML_DELETE) | |
3662 --high; | |
3663 | |
3664 dp = (DATA_BL *)(hp->bh_data); | |
3665 if (dp->db_id == DATA_ID) /* data block */ | |
3666 { | |
3667 buf->b_ml.ml_locked = hp; | |
3668 buf->b_ml.ml_locked_low = low; | |
3669 buf->b_ml.ml_locked_high = high; | |
3670 buf->b_ml.ml_locked_lineadd = 0; | |
3671 buf->b_ml.ml_flags &= ~(ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
3672 return hp; | |
3673 } | |
3674 | |
3675 pp = (PTR_BL *)(dp); /* must be pointer block */ | |
3676 if (pp->pb_id != PTR_ID) | |
3677 { | |
10359
66f1b5bf3fa6
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Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
3678 IEMSG(_("E317: pointer block id wrong")); |
7 | 3679 goto error_block; |
3680 } | |
3681 | |
3682 if ((top = ml_add_stack(buf)) < 0) /* add new entry to stack */ | |
3683 goto error_block; | |
3684 ip = &(buf->b_ml.ml_stack[top]); | |
3685 ip->ip_bnum = bnum; | |
3686 ip->ip_low = low; | |
3687 ip->ip_high = high; | |
3688 ip->ip_index = -1; /* index not known yet */ | |
3689 | |
3690 dirty = FALSE; | |
3691 for (idx = 0; idx < (int)pp->pb_count; ++idx) | |
3692 { | |
3693 t = pp->pb_pointer[idx].pe_line_count; | |
3694 CHECK(t == 0, _("pe_line_count is zero")); | |
3695 if ((low += t) > lnum) | |
3696 { | |
3697 ip->ip_index = idx; | |
3698 bnum = pp->pb_pointer[idx].pe_bnum; | |
3699 page_count = pp->pb_pointer[idx].pe_page_count; | |
3700 high = low - 1; | |
3701 low -= t; | |
3702 | |
3703 /* | |
3704 * a negative block number may have been changed | |
3705 */ | |
3706 if (bnum < 0) | |
3707 { | |
3708 bnum2 = mf_trans_del(mfp, bnum); | |
3709 if (bnum != bnum2) | |
3710 { | |
3711 bnum = bnum2; | |
3712 pp->pb_pointer[idx].pe_bnum = bnum; | |
3713 dirty = TRUE; | |
3714 } | |
3715 } | |
3716 | |
3717 break; | |
3718 } | |
3719 } | |
3720 if (idx >= (int)pp->pb_count) /* past the end: something wrong! */ | |
3721 { | |
3722 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
|
3723 IEMSGN(_("E322: line number out of range: %ld past the end"), |
7 | 3724 lnum - buf->b_ml.ml_line_count); |
3725 | |
3726 else | |
10359
66f1b5bf3fa6
commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
3727 IEMSGN(_("E323: line count wrong in block %ld"), bnum); |
7 | 3728 goto error_block; |
3729 } | |
3730 if (action == ML_DELETE) | |
3731 { | |
3732 pp->pb_pointer[idx].pe_line_count--; | |
3733 dirty = TRUE; | |
3734 } | |
3735 else if (action == ML_INSERT) | |
3736 { | |
3737 pp->pb_pointer[idx].pe_line_count++; | |
3738 dirty = TRUE; | |
3739 } | |
3740 mf_put(mfp, hp, dirty, FALSE); | |
3741 } | |
3742 | |
3743 error_block: | |
3744 mf_put(mfp, hp, FALSE, FALSE); | |
3745 error_noblock: | |
2267 | 3746 /* |
3747 * If action is ML_DELETE or ML_INSERT we have to correct the tree for | |
3748 * the incremented/decremented line counts, because there won't be a line | |
3749 * inserted/deleted after all. | |
3750 */ | |
7 | 3751 if (action == ML_DELETE) |
3752 ml_lineadd(buf, 1); | |
3753 else if (action == ML_INSERT) | |
3754 ml_lineadd(buf, -1); | |
3755 buf->b_ml.ml_stack_top = 0; | |
3756 return NULL; | |
3757 } | |
3758 | |
3759 /* | |
3760 * add an entry to the info pointer stack | |
3761 * | |
3762 * return -1 for failure, number of the new entry otherwise | |
3763 */ | |
3764 static int | |
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3765 ml_add_stack(buf_T *buf) |
7 | 3766 { |
3767 int top; | |
3768 infoptr_T *newstack; | |
3769 | |
3770 top = buf->b_ml.ml_stack_top; | |
3771 | |
2267 | 3772 /* may have to increase the stack size */ |
7 | 3773 if (top == buf->b_ml.ml_stack_size) |
3774 { | |
2267 | 3775 CHECK(top > 0, _("Stack size increases")); /* more than 5 levels??? */ |
7 | 3776 |
3777 newstack = (infoptr_T *)alloc((unsigned)sizeof(infoptr_T) * | |
3778 (buf->b_ml.ml_stack_size + STACK_INCR)); | |
3779 if (newstack == NULL) | |
3780 return -1; | |
6989 | 3781 if (top > 0) |
3782 mch_memmove(newstack, buf->b_ml.ml_stack, | |
1624 | 3783 (size_t)top * sizeof(infoptr_T)); |
7 | 3784 vim_free(buf->b_ml.ml_stack); |
3785 buf->b_ml.ml_stack = newstack; | |
3786 buf->b_ml.ml_stack_size += STACK_INCR; | |
3787 } | |
3788 | |
3789 buf->b_ml.ml_stack_top++; | |
3790 return top; | |
3791 } | |
3792 | |
3793 /* | |
3794 * Update the pointer blocks on the stack for inserted/deleted lines. | |
3795 * The stack itself is also updated. | |
3796 * | |
3797 * When a insert/delete line action fails, the line is not inserted/deleted, | |
3798 * but the pointer blocks have already been updated. That is fixed here by | |
3799 * walking through the stack. | |
3800 * | |
3801 * Count is the number of lines added, negative if lines have been deleted. | |
3802 */ | |
3803 static void | |
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parents:
7803
diff
changeset
|
3804 ml_lineadd(buf_T *buf, int count) |
7 | 3805 { |
3806 int idx; | |
3807 infoptr_T *ip; | |
3808 PTR_BL *pp; | |
3809 memfile_T *mfp = buf->b_ml.ml_mfp; | |
3810 bhdr_T *hp; | |
3811 | |
3812 for (idx = buf->b_ml.ml_stack_top - 1; idx >= 0; --idx) | |
3813 { | |
3814 ip = &(buf->b_ml.ml_stack[idx]); | |
3815 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
3816 break; | |
3817 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
3818 if (pp->pb_id != PTR_ID) | |
3819 { | |
3820 mf_put(mfp, hp, FALSE, FALSE); | |
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Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
3821 IEMSG(_("E317: pointer block id wrong 2")); |
7 | 3822 break; |
3823 } | |
3824 pp->pb_pointer[ip->ip_index].pe_line_count += count; | |
3825 ip->ip_high += count; | |
3826 mf_put(mfp, hp, TRUE, FALSE); | |
3827 } | |
3828 } | |
3829 | |
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Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
3830 #if defined(HAVE_READLINK) || defined(PROTO) |
594 | 3831 /* |
3832 * Resolve a symlink in the last component of a file name. | |
3833 * Note that f_resolve() does it for every part of the path, we don't do that | |
3834 * here. | |
3835 * If it worked returns OK and the resolved link in "buf[MAXPATHL]". | |
3836 * Otherwise returns FAIL. | |
3837 */ | |
2214
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Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
3838 int |
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parents:
7803
diff
changeset
|
3839 resolve_symlink(char_u *fname, char_u *buf) |
594 | 3840 { |
3841 char_u tmp[MAXPATHL]; | |
3842 int ret; | |
3843 int depth = 0; | |
3844 | |
3845 if (fname == NULL) | |
3846 return FAIL; | |
3847 | |
3848 /* Put the result so far in tmp[], starting with the original name. */ | |
3849 vim_strncpy(tmp, fname, MAXPATHL - 1); | |
3850 | |
3851 for (;;) | |
3852 { | |
3853 /* Limit symlink depth to 100, catch recursive loops. */ | |
3854 if (++depth == 100) | |
3855 { | |
3856 EMSG2(_("E773: Symlink loop for \"%s\""), fname); | |
3857 return FAIL; | |
3858 } | |
3859 | |
3860 ret = readlink((char *)tmp, (char *)buf, MAXPATHL - 1); | |
3861 if (ret <= 0) | |
3862 { | |
619 | 3863 if (errno == EINVAL || errno == ENOENT) |
594 | 3864 { |
619 | 3865 /* Found non-symlink or not existing file, stop here. |
1855 | 3866 * When at the first level use the unmodified name, skip the |
594 | 3867 * call to vim_FullName(). */ |
3868 if (depth == 1) | |
3869 return FAIL; | |
3870 | |
3871 /* Use the resolved name in tmp[]. */ | |
3872 break; | |
3873 } | |
3874 | |
3875 /* There must be some error reading links, use original name. */ | |
3876 return FAIL; | |
3877 } | |
3878 buf[ret] = NUL; | |
3879 | |
3880 /* | |
3881 * Check whether the symlink is relative or absolute. | |
3882 * If it's relative, build a new path based on the directory | |
3883 * portion of the filename (if any) and the path the symlink | |
3884 * points to. | |
3885 */ | |
3886 if (mch_isFullName(buf)) | |
3887 STRCPY(tmp, buf); | |
3888 else | |
3889 { | |
3890 char_u *tail; | |
3891 | |
3892 tail = gettail(tmp); | |
3893 if (STRLEN(tail) + STRLEN(buf) >= MAXPATHL) | |
3894 return FAIL; | |
3895 STRCPY(tail, buf); | |
3896 } | |
3897 } | |
3898 | |
3899 /* | |
3900 * Try to resolve the full name of the file so that the swapfile name will | |
3901 * be consistent even when opening a relative symlink from different | |
3902 * working directories. | |
3903 */ | |
3904 return vim_FullName(tmp, buf, MAXPATHL, TRUE); | |
3905 } | |
3906 #endif | |
3907 | |
7 | 3908 /* |
460 | 3909 * Make swap file name out of the file name and a directory name. |
3910 * Returns pointer to allocated memory or NULL. | |
7 | 3911 */ |
460 | 3912 char_u * |
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diff
changeset
|
3913 makeswapname( |
41789f16d6b2
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parents:
7803
diff
changeset
|
3914 char_u *fname, |
41789f16d6b2
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parents:
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diff
changeset
|
3915 char_u *ffname UNUSED, |
41789f16d6b2
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parents:
7803
diff
changeset
|
3916 buf_T *buf, |
41789f16d6b2
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parents:
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diff
changeset
|
3917 char_u *dir_name) |
7 | 3918 { |
3919 char_u *r, *s; | |
2145
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diff
changeset
|
3920 char_u *fname_res = fname; |
594 | 3921 #ifdef HAVE_READLINK |
3922 char_u fname_buf[MAXPATHL]; | |
3923 #endif | |
7 | 3924 |
3925 #if defined(UNIX) || defined(WIN3264) /* Need _very_ long file names */ | |
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3926 int len = (int)STRLEN(dir_name); |
10896
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|
3927 |
d513b653f5d0
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|
3928 s = dir_name + len; |
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diff
changeset
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3929 if (after_pathsep(dir_name, s) && len > 1 && s[-1] == s[-2]) |
7 | 3930 { /* Ends with '//', Use Full path */ |
3931 r = NULL; | |
460 | 3932 if ((s = make_percent_swname(dir_name, fname)) != NULL) |
7 | 3933 { |
3934 r = modname(s, (char_u *)".swp", FALSE); | |
3935 vim_free(s); | |
3936 } | |
3937 return r; | |
3938 } | |
3939 #endif | |
3940 | |
594 | 3941 #ifdef HAVE_READLINK |
3942 /* Expand symlink in the file name, so that we put the swap file with the | |
3943 * actual file instead of with the symlink. */ | |
3944 if (resolve_symlink(fname, fname_buf) == OK) | |
3945 fname_res = fname_buf; | |
3946 #endif | |
3947 | |
7 | 3948 r = buf_modname( |
3949 (buf->b_p_sn || buf->b_shortname), | |
594 | 3950 fname_res, |
7 | 3951 (char_u *) |
2823 | 3952 #if defined(VMS) |
7 | 3953 "_swp", |
3954 #else | |
3955 ".swp", | |
3956 #endif | |
3957 /* Prepend a '.' to the swap file name for the current directory. */ | |
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7961
diff
changeset
|
3958 dir_name[0] == '.' && dir_name[1] == NUL); |
7 | 3959 if (r == NULL) /* out of memory */ |
3960 return NULL; | |
3961 | |
3962 s = get_file_in_dir(r, dir_name); | |
3963 vim_free(r); | |
3964 return s; | |
3965 } | |
3966 | |
3967 /* | |
3968 * Get file name to use for swap file or backup file. | |
3969 * Use the name of the edited file "fname" and an entry in the 'dir' or 'bdir' | |
3970 * option "dname". | |
3971 * - If "dname" is ".", return "fname" (swap file in dir of file). | |
3972 * - If "dname" starts with "./", insert "dname" in "fname" (swap file | |
3973 * relative to dir of file). | |
3974 * - Otherwise, prepend "dname" to the tail of "fname" (swap file in specific | |
3975 * dir). | |
3976 * | |
3977 * The return value is an allocated string and can be NULL. | |
3978 */ | |
3979 char_u * | |
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7803
diff
changeset
|
3980 get_file_in_dir( |
41789f16d6b2
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parents:
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diff
changeset
|
3981 char_u *fname, |
41789f16d6b2
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parents:
7803
diff
changeset
|
3982 char_u *dname) /* don't use "dirname", it is a global for Alpha */ |
7 | 3983 { |
3984 char_u *t; | |
3985 char_u *tail; | |
3986 char_u *retval; | |
3987 int save_char; | |
3988 | |
3989 tail = gettail(fname); | |
3990 | |
3991 if (dname[0] == '.' && dname[1] == NUL) | |
3992 retval = vim_strsave(fname); | |
3993 else if (dname[0] == '.' && vim_ispathsep(dname[1])) | |
3994 { | |
3995 if (tail == fname) /* no path before file name */ | |
3996 retval = concat_fnames(dname + 2, tail, TRUE); | |
3997 else | |
3998 { | |
3999 save_char = *tail; | |
4000 *tail = NUL; | |
4001 t = concat_fnames(fname, dname + 2, TRUE); | |
4002 *tail = save_char; | |
4003 if (t == NULL) /* out of memory */ | |
4004 retval = NULL; | |
4005 else | |
4006 { | |
4007 retval = concat_fnames(t, tail, TRUE); | |
4008 vim_free(t); | |
4009 } | |
4010 } | |
4011 } | |
4012 else | |
4013 retval = concat_fnames(dname, tail, TRUE); | |
4014 | |
5432 | 4015 #ifdef WIN3264 |
4016 if (retval != NULL) | |
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diff
changeset
|
4017 for (t = gettail(retval); *t != NUL; MB_PTR_ADV(t)) |
5432 | 4018 if (*t == ':') |
4019 *t = '%'; | |
4020 #endif | |
4021 | |
7 | 4022 return retval; |
4023 } | |
4024 | |
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diff
changeset
|
4025 static void attention_message(buf_T *buf, char_u *fname); |
580 | 4026 |
4027 /* | |
4028 * Print the ATTENTION message: info about an existing swap file. | |
4029 */ | |
4030 static void | |
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diff
changeset
|
4031 attention_message( |
41789f16d6b2
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7803
diff
changeset
|
4032 buf_T *buf, /* buffer being edited */ |
41789f16d6b2
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parents:
7803
diff
changeset
|
4033 char_u *fname) /* swap file name */ |
580 | 4034 { |
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parents:
9295
diff
changeset
|
4035 stat_T st; |
580 | 4036 time_t x, sx; |
1001 | 4037 char *p; |
580 | 4038 |
4039 ++no_wait_return; | |
4040 (void)EMSG(_("E325: ATTENTION")); | |
4041 MSG_PUTS(_("\nFound a swap file by the name \"")); | |
4042 msg_home_replace(fname); | |
4043 MSG_PUTS("\"\n"); | |
4044 sx = swapfile_info(fname); | |
4045 MSG_PUTS(_("While opening file \"")); | |
4046 msg_outtrans(buf->b_fname); | |
4047 MSG_PUTS("\"\n"); | |
4048 if (mch_stat((char *)buf->b_fname, &st) != -1) | |
4049 { | |
4050 MSG_PUTS(_(" dated: ")); | |
4051 x = st.st_mtime; /* Manx C can't do &st.st_mtime */ | |
1001 | 4052 p = ctime(&x); /* includes '\n' */ |
4053 if (p == NULL) | |
4054 MSG_PUTS("(invalid)\n"); | |
4055 else | |
4056 MSG_PUTS(p); | |
580 | 4057 if (sx != 0 && x > sx) |
4058 MSG_PUTS(_(" NEWER than swap file!\n")); | |
4059 } | |
4060 /* Some of these messages are long to allow translation to | |
4061 * other languages. */ | |
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7827
diff
changeset
|
4062 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 | 4063 MSG_PUTS(_("(2) An edit session for this file crashed.\n")); |
580 | 4064 MSG_PUTS(_(" If this is the case, use \":recover\" or \"vim -r ")); |
4065 msg_outtrans(buf->b_fname); | |
4066 MSG_PUTS(_("\"\n to recover the changes (see \":help recovery\").\n")); | |
4067 MSG_PUTS(_(" If you did this already, delete the swap file \"")); | |
4068 msg_outtrans(fname); | |
4069 MSG_PUTS(_("\"\n to avoid this message.\n")); | |
4070 cmdline_row = msg_row; | |
4071 --no_wait_return; | |
4072 } | |
4073 | |
4074 #ifdef FEAT_AUTOCMD | |
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parents:
7410
diff
changeset
|
4075 static int do_swapexists(buf_T *buf, char_u *fname); |
580 | 4076 |
4077 /* | |
4078 * Trigger the SwapExists autocommands. | |
4079 * Returns a value for equivalent to do_dialog() (see below): | |
4080 * 0: still need to ask for a choice | |
4081 * 1: open read-only | |
4082 * 2: edit anyway | |
4083 * 3: recover | |
4084 * 4: delete it | |
4085 * 5: quit | |
4086 * 6: abort | |
4087 */ | |
4088 static int | |
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parents:
7803
diff
changeset
|
4089 do_swapexists(buf_T *buf, char_u *fname) |
580 | 4090 { |
4091 set_vim_var_string(VV_SWAPNAME, fname, -1); | |
4092 set_vim_var_string(VV_SWAPCHOICE, NULL, -1); | |
4093 | |
4094 /* Trigger SwapExists autocommands with <afile> set to the file being | |
1856 | 4095 * edited. Disallow changing directory here. */ |
4096 ++allbuf_lock; | |
580 | 4097 apply_autocmds(EVENT_SWAPEXISTS, buf->b_fname, NULL, FALSE, NULL); |
1856 | 4098 --allbuf_lock; |
580 | 4099 |
4100 set_vim_var_string(VV_SWAPNAME, NULL, -1); | |
4101 | |
4102 switch (*get_vim_var_str(VV_SWAPCHOICE)) | |
4103 { | |
4104 case 'o': return 1; | |
4105 case 'e': return 2; | |
4106 case 'r': return 3; | |
4107 case 'd': return 4; | |
4108 case 'q': return 5; | |
4109 case 'a': return 6; | |
4110 } | |
4111 | |
4112 return 0; | |
4113 } | |
4114 #endif | |
4115 | |
7 | 4116 /* |
4117 * Find out what name to use for the swap file for buffer 'buf'. | |
4118 * | |
4119 * Several names are tried to find one that does not exist | |
460 | 4120 * Returns the name in allocated memory or NULL. |
3158 | 4121 * When out of memory "dirp" is set to NULL. |
7 | 4122 * |
4123 * Note: If BASENAMELEN is not correct, you will get error messages for | |
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changeset
|
4124 * not being able to open the swap or undo file |
1856 | 4125 * Note: May trigger SwapExists autocmd, pointers may change! |
7 | 4126 */ |
4127 static char_u * | |
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changeset
|
4128 findswapname( |
41789f16d6b2
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diff
changeset
|
4129 buf_T *buf, |
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diff
changeset
|
4130 char_u **dirp, /* pointer to list of directories */ |
41789f16d6b2
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7803
diff
changeset
|
4131 char_u *old_fname) /* don't give warning for this file name */ |
7 | 4132 { |
4133 char_u *fname; | |
4134 int n; | |
4135 char_u *dir_name; | |
4136 #ifdef AMIGA | |
4137 BPTR fh; | |
4138 #endif | |
4139 int r; | |
5432 | 4140 char_u *buf_fname = buf->b_fname; |
7 | 4141 |
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parents:
7961
diff
changeset
|
4142 #if !defined(UNIX) |
7 | 4143 # define CREATE_DUMMY_FILE |
4144 FILE *dummyfd = NULL; | |
4145 | |
5432 | 4146 # ifdef WIN3264 |
4147 if (buf_fname != NULL && !mch_isFullName(buf_fname) | |
4148 && vim_strchr(gettail(buf_fname), ':')) | |
4149 { | |
4150 char_u *t; | |
4151 | |
4152 buf_fname = vim_strsave(buf_fname); | |
4153 if (buf_fname == NULL) | |
4154 buf_fname = buf->b_fname; | |
4155 else | |
11127
506f5d8b7d8b
patch 8.0.0451: some macros are in lower case
Christian Brabandt <cb@256bit.org>
parents:
10996
diff
changeset
|
4156 for (t = gettail(buf_fname); *t != NUL; MB_PTR_ADV(t)) |
5432 | 4157 if (*t == ':') |
4158 *t = '%'; | |
4159 } | |
4160 # endif | |
4161 | |
2214
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4162 /* |
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4163 * 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
|
4164 * 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
|
4165 * "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
|
4166 * 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
|
4167 * 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
|
4168 */ |
5432 | 4169 if (!(buf->b_p_sn || buf->b_shortname) && buf_fname != NULL |
4170 && mch_getperm(buf_fname) < 0) | |
4171 dummyfd = mch_fopen((char *)buf_fname, "w"); | |
7 | 4172 #endif |
4173 | |
2214
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4174 /* |
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4175 * 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
|
4176 * 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
|
4177 */ |
7 | 4178 dir_name = alloc((unsigned)STRLEN(*dirp) + 1); |
3158 | 4179 if (dir_name == NULL) |
4180 *dirp = NULL; | |
4181 else | |
7 | 4182 (void)copy_option_part(dirp, dir_name, 31000, ","); |
4183 | |
2214
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4184 /* |
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4185 * 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
|
4186 */ |
7 | 4187 if (dir_name == NULL) /* out of memory */ |
4188 fname = NULL; | |
4189 else | |
5432 | 4190 fname = makeswapname(buf_fname, buf->b_ffname, buf, dir_name); |
7 | 4191 |
4192 for (;;) | |
4193 { | |
4194 if (fname == NULL) /* must be out of memory */ | |
4195 break; | |
4196 if ((n = (int)STRLEN(fname)) == 0) /* safety check */ | |
4197 { | |
13244
ac42c4b11dbc
patch 8.0.1496: clearing a pointer takes two lines
Christian Brabandt <cb@256bit.org>
parents:
12975
diff
changeset
|
4198 VIM_CLEAR(fname); |
7 | 4199 break; |
4200 } | |
8212
05b88224cea1
commit https://github.com/vim/vim/commit/48e330aff911be1c798c88a973af6437a8141fce
Christian Brabandt <cb@256bit.org>
parents:
7961
diff
changeset
|
4201 #if defined(UNIX) |
7 | 4202 /* |
4203 * Some systems have a MS-DOS compatible filesystem that use 8.3 character | |
4204 * file names. If this is the first try and the swap file name does not fit in | |
4205 * 8.3, detect if this is the case, set shortname and try again. | |
4206 */ | |
4207 if (fname[n - 2] == 'w' && fname[n - 1] == 'p' | |
4208 && !(buf->b_p_sn || buf->b_shortname)) | |
4209 { | |
4210 char_u *tail; | |
4211 char_u *fname2; | |
9387
f094d4085014
commit https://github.com/vim/vim/commit/8767f52fbfd4f053ce00a978227c95f1d7d323fe
Christian Brabandt <cb@256bit.org>
parents:
9295
diff
changeset
|
4212 stat_T s1, s2; |
7 | 4213 int f1, f2; |
4214 int created1 = FALSE, created2 = FALSE; | |
4215 int same = FALSE; | |
4216 | |
4217 /* | |
4218 * Check if swapfile name does not fit in 8.3: | |
4219 * It either contains two dots, is longer than 8 chars, or starts | |
4220 * with a dot. | |
4221 */ | |
5432 | 4222 tail = gettail(buf_fname); |
7 | 4223 if ( vim_strchr(tail, '.') != NULL |
4224 || STRLEN(tail) > (size_t)8 | |
4225 || *gettail(fname) == '.') | |
4226 { | |
4227 fname2 = alloc(n + 2); | |
4228 if (fname2 != NULL) | |
4229 { | |
4230 STRCPY(fname2, fname); | |
4231 /* if fname == "xx.xx.swp", fname2 = "xx.xx.swx" | |
4232 * if fname == ".xx.swp", fname2 = ".xx.swpx" | |
4233 * if fname == "123456789.swp", fname2 = "12345678x.swp" | |
4234 */ | |
4235 if (vim_strchr(tail, '.') != NULL) | |
4236 fname2[n - 1] = 'x'; | |
4237 else if (*gettail(fname) == '.') | |
4238 { | |
4239 fname2[n] = 'x'; | |
4240 fname2[n + 1] = NUL; | |
4241 } | |
4242 else | |
4243 fname2[n - 5] += 1; | |
4244 /* | |
4245 * may need to create the files to be able to use mch_stat() | |
4246 */ | |
4247 f1 = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
4248 if (f1 < 0) | |
4249 { | |
4250 f1 = mch_open_rw((char *)fname, | |
4251 O_RDWR|O_CREAT|O_EXCL|O_EXTRA); | |
4252 created1 = TRUE; | |
4253 } | |
4254 if (f1 >= 0) | |
4255 { | |
4256 f2 = mch_open((char *)fname2, O_RDONLY | O_EXTRA, 0); | |
4257 if (f2 < 0) | |
4258 { | |
4259 f2 = mch_open_rw((char *)fname2, | |
4260 O_RDWR|O_CREAT|O_EXCL|O_EXTRA); | |
4261 created2 = TRUE; | |
4262 } | |
4263 if (f2 >= 0) | |
4264 { | |
4265 /* | |
4266 * Both files exist now. If mch_stat() returns the | |
4267 * same device and inode they are the same file. | |
4268 */ | |
4269 if (mch_fstat(f1, &s1) != -1 | |
4270 && mch_fstat(f2, &s2) != -1 | |
4271 && s1.st_dev == s2.st_dev | |
4272 && s1.st_ino == s2.st_ino) | |
4273 same = TRUE; | |
4274 close(f2); | |
4275 if (created2) | |
4276 mch_remove(fname2); | |
4277 } | |
4278 close(f1); | |
4279 if (created1) | |
4280 mch_remove(fname); | |
4281 } | |
4282 vim_free(fname2); | |
4283 if (same) | |
4284 { | |
4285 buf->b_shortname = TRUE; | |
4286 vim_free(fname); | |
5432 | 4287 fname = makeswapname(buf_fname, buf->b_ffname, |
460 | 4288 buf, dir_name); |
7 | 4289 continue; /* try again with b_shortname set */ |
4290 } | |
4291 } | |
4292 } | |
4293 } | |
4294 #endif | |
4295 /* | |
4296 * check if the swapfile already exists | |
4297 */ | |
4298 if (mch_getperm(fname) < 0) /* it does not exist */ | |
4299 { | |
4300 #ifdef HAVE_LSTAT | |
9387
f094d4085014
commit https://github.com/vim/vim/commit/8767f52fbfd4f053ce00a978227c95f1d7d323fe
Christian Brabandt <cb@256bit.org>
parents:
9295
diff
changeset
|
4301 stat_T sb; |
7 | 4302 |
4303 /* | |
4304 * Extra security check: When a swap file is a symbolic link, this | |
4305 * is most likely a symlink attack. | |
4306 */ | |
4307 if (mch_lstat((char *)fname, &sb) < 0) | |
4308 #else | |
4309 # ifdef AMIGA | |
4310 fh = Open((UBYTE *)fname, (long)MODE_NEWFILE); | |
4311 /* | |
4312 * on the Amiga mch_getperm() will return -1 when the file exists | |
4313 * but is being used by another program. This happens if you edit | |
4314 * a file twice. | |
4315 */ | |
4316 if (fh != (BPTR)NULL) /* can open file, OK */ | |
4317 { | |
4318 Close(fh); | |
4319 mch_remove(fname); | |
4320 break; | |
4321 } | |
4322 if (IoErr() != ERROR_OBJECT_IN_USE | |
4323 && IoErr() != ERROR_OBJECT_EXISTS) | |
4324 # endif | |
4325 #endif | |
4326 break; | |
4327 } | |
4328 | |
4329 /* | |
4330 * A file name equal to old_fname is OK to use. | |
4331 */ | |
4332 if (old_fname != NULL && fnamecmp(fname, old_fname) == 0) | |
4333 break; | |
4334 | |
4335 /* | |
4336 * get here when file already exists | |
4337 */ | |
4338 if (fname[n - 2] == 'w' && fname[n - 1] == 'p') /* first try */ | |
4339 { | |
4340 /* | |
4341 * on MS-DOS compatible filesystems (e.g. messydos) file.doc.swp | |
4342 * and file.doc are the same file. To guess if this problem is | |
4343 * present try if file.doc.swx exists. If it does, we set | |
4344 * buf->b_shortname and try file_doc.swp (dots replaced by | |
4345 * underscores for this file), and try again. If it doesn't we | |
4346 * assume that "file.doc.swp" already exists. | |
4347 */ | |
4348 if (!(buf->b_p_sn || buf->b_shortname)) /* not tried yet */ | |
4349 { | |
4350 fname[n - 1] = 'x'; | |
4351 r = mch_getperm(fname); /* try "file.swx" */ | |
4352 fname[n - 1] = 'p'; | |
4353 if (r >= 0) /* "file.swx" seems to exist */ | |
4354 { | |
4355 buf->b_shortname = TRUE; | |
4356 vim_free(fname); | |
5432 | 4357 fname = makeswapname(buf_fname, buf->b_ffname, |
460 | 4358 buf, dir_name); |
7 | 4359 continue; /* try again with '.' replaced with '_' */ |
4360 } | |
4361 } | |
4362 /* | |
4363 * If we get here the ".swp" file really exists. | |
4364 * Give an error message, unless recovering, no file name, we are | |
4365 * viewing a help file or when the path of the file is different | |
4366 * (happens when all .swp files are in one directory). | |
4367 */ | |
5432 | 4368 if (!recoverymode && buf_fname != NULL |
43 | 4369 && !buf->b_help && !(buf->b_flags & BF_DUMMY)) |
7 | 4370 { |
4371 int fd; | |
4372 struct block0 b0; | |
4373 int differ = FALSE; | |
4374 | |
4375 /* | |
4376 * Try to read block 0 from the swap file to get the original | |
4377 * file name (and inode number). | |
4378 */ | |
4379 fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
4380 if (fd >= 0) | |
4381 { | |
2664 | 4382 if (read_eintr(fd, &b0, sizeof(b0)) == sizeof(b0)) |
7 | 4383 { |
4384 /* | |
39 | 4385 * If the swapfile has the same directory as the |
4386 * buffer don't compare the directory names, they can | |
4387 * have a different mountpoint. | |
7 | 4388 */ |
39 | 4389 if (b0.b0_flags & B0_SAME_DIR) |
4390 { | |
4391 if (fnamecmp(gettail(buf->b_ffname), | |
4392 gettail(b0.b0_fname)) != 0 | |
4393 || !same_directory(fname, buf->b_ffname)) | |
594 | 4394 { |
4395 #ifdef CHECK_INODE | |
4396 /* Symlinks may point to the same file even | |
4397 * when the name differs, need to check the | |
4398 * inode too. */ | |
4399 expand_env(b0.b0_fname, NameBuff, MAXPATHL); | |
4400 if (fnamecmp_ino(buf->b_ffname, NameBuff, | |
4401 char_to_long(b0.b0_ino))) | |
4402 #endif | |
4403 differ = TRUE; | |
4404 } | |
39 | 4405 } |
4406 else | |
4407 { | |
4408 /* | |
4409 * The name in the swap file may be | |
4410 * "~user/path/file". Expand it first. | |
4411 */ | |
4412 expand_env(b0.b0_fname, NameBuff, MAXPATHL); | |
7 | 4413 #ifdef CHECK_INODE |
39 | 4414 if (fnamecmp_ino(buf->b_ffname, NameBuff, |
594 | 4415 char_to_long(b0.b0_ino))) |
39 | 4416 differ = TRUE; |
7 | 4417 #else |
39 | 4418 if (fnamecmp(NameBuff, buf->b_ffname) != 0) |
4419 differ = TRUE; | |
7 | 4420 #endif |
39 | 4421 } |
7 | 4422 } |
4423 close(fd); | |
4424 } | |
4425 | |
4426 /* give the ATTENTION message when there is an old swap file | |
4427 * for the current file, and the buffer was not recovered. */ | |
4428 if (differ == FALSE && !(curbuf->b_flags & BF_RECOVERED) | |
4429 && vim_strchr(p_shm, SHM_ATTENTION) == NULL) | |
4430 { | |
580 | 4431 #if defined(HAS_SWAP_EXISTS_ACTION) |
4432 int choice = 0; | |
4433 #endif | |
7 | 4434 #ifdef CREATE_DUMMY_FILE |
4435 int did_use_dummy = FALSE; | |
4436 | |
4437 /* Avoid getting a warning for the file being created | |
4438 * outside of Vim, it was created at the start of this | |
4439 * function. Delete the file now, because Vim might exit | |
4440 * here if the window is closed. */ | |
4441 if (dummyfd != NULL) | |
4442 { | |
4443 fclose(dummyfd); | |
4444 dummyfd = NULL; | |
5432 | 4445 mch_remove(buf_fname); |
7 | 4446 did_use_dummy = TRUE; |
4447 } | |
4448 #endif | |
4449 | |
9536
b2aada04d84e
commit https://github.com/vim/vim/commit/a06ecab7a5159e744448ace731036f0dc5f87dd4
Christian Brabandt <cb@256bit.org>
parents:
9387
diff
changeset
|
4450 #if (defined(UNIX) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)) |
7 | 4451 process_still_running = FALSE; |
4452 #endif | |
580 | 4453 #ifdef FEAT_AUTOCMD |
4454 /* | |
4455 * If there is an SwapExists autocommand and we can handle | |
4456 * the response, trigger it. It may return 0 to ask the | |
4457 * user anyway. | |
4458 */ | |
4459 if (swap_exists_action != SEA_NONE | |
5432 | 4460 && has_autocmd(EVENT_SWAPEXISTS, buf_fname, buf)) |
580 | 4461 choice = do_swapexists(buf, fname); |
4462 | |
4463 if (choice == 0) | |
4464 #endif | |
7 | 4465 { |
580 | 4466 #ifdef FEAT_GUI |
4467 /* If we are supposed to start the GUI but it wasn't | |
4468 * completely started yet, start it now. This makes | |
4469 * the messages displayed in the Vim window when | |
4470 * loading a session from the .gvimrc file. */ | |
4471 if (gui.starting && !gui.in_use) | |
4472 gui_start(); | |
4473 #endif | |
4474 /* Show info about the existing swap file. */ | |
4475 attention_message(buf, fname); | |
4476 | |
4477 /* We don't want a 'q' typed at the more-prompt | |
4478 * interrupt loading a file. */ | |
4479 got_int = FALSE; | |
7 | 4480 } |
4481 | |
4482 #if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) | |
580 | 4483 if (swap_exists_action != SEA_NONE && choice == 0) |
7 | 4484 { |
4485 char_u *name; | |
4486 | |
4487 name = alloc((unsigned)(STRLEN(fname) | |
4488 + STRLEN(_("Swap file \"")) | |
4489 + STRLEN(_("\" already exists!")) + 5)); | |
4490 if (name != NULL) | |
4491 { | |
4492 STRCPY(name, _("Swap file \"")); | |
4493 home_replace(NULL, fname, name + STRLEN(name), | |
4494 1000, TRUE); | |
4495 STRCAT(name, _("\" already exists!")); | |
4496 } | |
580 | 4497 choice = do_dialog(VIM_WARNING, |
7 | 4498 (char_u *)_("VIM - ATTENTION"), |
4499 name == NULL | |
4500 ? (char_u *)_("Swap file already exists!") | |
4501 : name, | |
9536
b2aada04d84e
commit https://github.com/vim/vim/commit/a06ecab7a5159e744448ace731036f0dc5f87dd4
Christian Brabandt <cb@256bit.org>
parents:
9387
diff
changeset
|
4502 # if defined(UNIX) || defined(VMS) |
7 | 4503 process_still_running |
4504 ? (char_u *)_("&Open Read-Only\n&Edit anyway\n&Recover\n&Quit\n&Abort") : | |
4505 # endif | |
2684 | 4506 (char_u *)_("&Open Read-Only\n&Edit anyway\n&Recover\n&Delete it\n&Quit\n&Abort"), 1, NULL, FALSE); |
580 | 4507 |
9536
b2aada04d84e
commit https://github.com/vim/vim/commit/a06ecab7a5159e744448ace731036f0dc5f87dd4
Christian Brabandt <cb@256bit.org>
parents:
9387
diff
changeset
|
4508 # if defined(UNIX) || defined(VMS) |
580 | 4509 if (process_still_running && choice >= 4) |
4510 choice++; /* Skip missing "Delete it" button */ | |
4511 # endif | |
4512 vim_free(name); | |
4513 | |
4514 /* pretend screen didn't scroll, need redraw anyway */ | |
4515 msg_scrolled = 0; | |
4516 redraw_all_later(NOT_VALID); | |
4517 } | |
4518 #endif | |
4519 | |
4520 #if defined(HAS_SWAP_EXISTS_ACTION) | |
4521 if (choice > 0) | |
4522 { | |
4523 switch (choice) | |
7 | 4524 { |
4525 case 1: | |
4526 buf->b_p_ro = TRUE; | |
4527 break; | |
4528 case 2: | |
4529 break; | |
4530 case 3: | |
4531 swap_exists_action = SEA_RECOVER; | |
4532 break; | |
4533 case 4: | |
580 | 4534 mch_remove(fname); |
4535 break; | |
4536 case 5: | |
7 | 4537 swap_exists_action = SEA_QUIT; |
4538 break; | |
580 | 4539 case 6: |
7 | 4540 swap_exists_action = SEA_QUIT; |
4541 got_int = TRUE; | |
4542 break; | |
4543 } | |
4544 | |
4545 /* If the file was deleted this fname can be used. */ | |
4546 if (mch_getperm(fname) < 0) | |
4547 break; | |
4548 } | |
4549 else | |
4550 #endif | |
4551 { | |
4552 MSG_PUTS("\n"); | |
625 | 4553 if (msg_silent == 0) |
4554 /* call wait_return() later */ | |
4555 need_wait_return = TRUE; | |
7 | 4556 } |
4557 | |
4558 #ifdef CREATE_DUMMY_FILE | |
4559 /* Going to try another name, need the dummy file again. */ | |
4560 if (did_use_dummy) | |
5432 | 4561 dummyfd = mch_fopen((char *)buf_fname, "w"); |
7 | 4562 #endif |
4563 } | |
4564 } | |
4565 } | |
4566 | |
4567 /* | |
4568 * Change the ".swp" extension to find another file that can be used. | |
4569 * First decrement the last char: ".swo", ".swn", etc. | |
4570 * If that still isn't enough decrement the last but one char: ".svz" | |
9 | 4571 * Can happen when editing many "No Name" buffers. |
7 | 4572 */ |
4573 if (fname[n - 1] == 'a') /* ".s?a" */ | |
4574 { | |
4575 if (fname[n - 2] == 'a') /* ".saa": tried enough, give up */ | |
4576 { | |
4577 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
|
4578 VIM_CLEAR(fname); |
7 | 4579 break; |
4580 } | |
4581 --fname[n - 2]; /* ".svz", ".suz", etc. */ | |
4582 fname[n - 1] = 'z' + 1; | |
4583 } | |
4584 --fname[n - 1]; /* ".swo", ".swn", etc. */ | |
4585 } | |
4586 | |
4587 vim_free(dir_name); | |
4588 #ifdef CREATE_DUMMY_FILE | |
4589 if (dummyfd != NULL) /* file has been created temporarily */ | |
4590 { | |
4591 fclose(dummyfd); | |
5432 | 4592 mch_remove(buf_fname); |
7 | 4593 } |
4594 #endif | |
5432 | 4595 #ifdef WIN3264 |
4596 if (buf_fname != buf->b_fname) | |
4597 vim_free(buf_fname); | |
4598 #endif | |
7 | 4599 return fname; |
4600 } | |
4601 | |
4602 static int | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4603 b0_magic_wrong(ZERO_BL *b0p) |
7 | 4604 { |
4605 return (b0p->b0_magic_long != (long)B0_MAGIC_LONG | |
4606 || b0p->b0_magic_int != (int)B0_MAGIC_INT | |
4607 || b0p->b0_magic_short != (short)B0_MAGIC_SHORT | |
4608 || b0p->b0_magic_char != B0_MAGIC_CHAR); | |
4609 } | |
4610 | |
4611 #ifdef CHECK_INODE | |
4612 /* | |
4613 * Compare current file name with file name from swap file. | |
4614 * Try to use inode numbers when possible. | |
4615 * Return non-zero when files are different. | |
4616 * | |
4617 * When comparing file names a few things have to be taken into consideration: | |
4618 * - When working over a network the full path of a file depends on the host. | |
4619 * We check the inode number if possible. It is not 100% reliable though, | |
4620 * because the device number cannot be used over a network. | |
4621 * - When a file does not exist yet (editing a new file) there is no inode | |
4622 * number. | |
4623 * - The file name in a swap file may not be valid on the current host. The | |
4624 * "~user" form is used whenever possible to avoid this. | |
4625 * | |
4626 * This is getting complicated, let's make a table: | |
4627 * | |
4628 * ino_c ino_s fname_c fname_s differ = | |
4629 * | |
4630 * both files exist -> compare inode numbers: | |
4631 * != 0 != 0 X X ino_c != ino_s | |
4632 * | |
4633 * inode number(s) unknown, file names available -> compare file names | |
4634 * == 0 X OK OK fname_c != fname_s | |
4635 * X == 0 OK OK fname_c != fname_s | |
4636 * | |
4637 * current file doesn't exist, file for swap file exist, file name(s) not | |
4638 * available -> probably different | |
4639 * == 0 != 0 FAIL X TRUE | |
4640 * == 0 != 0 X FAIL TRUE | |
4641 * | |
4642 * current file exists, inode for swap unknown, file name(s) not | |
4643 * available -> probably different | |
4644 * != 0 == 0 FAIL X TRUE | |
4645 * != 0 == 0 X FAIL TRUE | |
4646 * | |
4647 * current file doesn't exist, inode for swap unknown, one file name not | |
4648 * available -> probably different | |
4649 * == 0 == 0 FAIL OK TRUE | |
4650 * == 0 == 0 OK FAIL TRUE | |
4651 * | |
4652 * current file doesn't exist, inode for swap unknown, both file names not | |
4653 * available -> probably same file | |
4654 * == 0 == 0 FAIL FAIL FALSE | |
4655 * | |
4656 * Note that when the ino_t is 64 bits, only the last 32 will be used. This | |
4657 * can't be changed without making the block 0 incompatible with 32 bit | |
4658 * versions. | |
4659 */ | |
4660 | |
4661 static int | |
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diff
changeset
|
4662 fnamecmp_ino( |
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parents:
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diff
changeset
|
4663 char_u *fname_c, /* current file name */ |
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parents:
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diff
changeset
|
4664 char_u *fname_s, /* file name from swap file */ |
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parents:
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diff
changeset
|
4665 long ino_block0) |
7 | 4666 { |
9387
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diff
changeset
|
4667 stat_T st; |
7 | 4668 ino_t ino_c = 0; /* ino of current file */ |
4669 ino_t ino_s; /* ino of file from swap file */ | |
4670 char_u buf_c[MAXPATHL]; /* full path of fname_c */ | |
4671 char_u buf_s[MAXPATHL]; /* full path of fname_s */ | |
4672 int retval_c; /* flag: buf_c valid */ | |
4673 int retval_s; /* flag: buf_s valid */ | |
4674 | |
4675 if (mch_stat((char *)fname_c, &st) == 0) | |
4676 ino_c = (ino_t)st.st_ino; | |
4677 | |
4678 /* | |
4679 * First we try to get the inode from the file name, because the inode in | |
4680 * the swap file may be outdated. If that fails (e.g. this path is not | |
4681 * valid on this machine), use the inode from block 0. | |
4682 */ | |
4683 if (mch_stat((char *)fname_s, &st) == 0) | |
4684 ino_s = (ino_t)st.st_ino; | |
4685 else | |
4686 ino_s = (ino_t)ino_block0; | |
4687 | |
4688 if (ino_c && ino_s) | |
4689 return (ino_c != ino_s); | |
4690 | |
4691 /* | |
4692 * One of the inode numbers is unknown, try a forced vim_FullName() and | |
4693 * compare the file names. | |
4694 */ | |
4695 retval_c = vim_FullName(fname_c, buf_c, MAXPATHL, TRUE); | |
4696 retval_s = vim_FullName(fname_s, buf_s, MAXPATHL, TRUE); | |
4697 if (retval_c == OK && retval_s == OK) | |
4698 return (STRCMP(buf_c, buf_s) != 0); | |
4699 | |
4700 /* | |
4701 * Can't compare inodes or file names, guess that the files are different, | |
4702 * unless both appear not to exist at all. | |
4703 */ | |
4704 if (ino_s == 0 && ino_c == 0 && retval_c == FAIL && retval_s == FAIL) | |
4705 return FALSE; | |
4706 return TRUE; | |
4707 } | |
4708 #endif /* CHECK_INODE */ | |
4709 | |
4710 /* | |
4711 * Move a long integer into a four byte character array. | |
4712 * Used for machine independency in block zero. | |
4713 */ | |
4714 static void | |
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diff
changeset
|
4715 long_to_char(long n, char_u *s) |
7 | 4716 { |
4717 s[0] = (char_u)(n & 0xff); | |
4718 n = (unsigned)n >> 8; | |
4719 s[1] = (char_u)(n & 0xff); | |
4720 n = (unsigned)n >> 8; | |
4721 s[2] = (char_u)(n & 0xff); | |
4722 n = (unsigned)n >> 8; | |
4723 s[3] = (char_u)(n & 0xff); | |
4724 } | |
4725 | |
4726 static long | |
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parents:
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diff
changeset
|
4727 char_to_long(char_u *s) |
7 | 4728 { |
4729 long retval; | |
4730 | |
4731 retval = s[3]; | |
4732 retval <<= 8; | |
4733 retval |= s[2]; | |
4734 retval <<= 8; | |
4735 retval |= s[1]; | |
4736 retval <<= 8; | |
4737 retval |= s[0]; | |
4738 | |
4739 return retval; | |
4740 } | |
4741 | |
39 | 4742 /* |
4743 * Set the flags in the first block of the swap file: | |
4744 * - file is modified or not: buf->b_changed | |
4745 * - 'fileformat' | |
4746 * - 'fileencoding' | |
4747 */ | |
7 | 4748 void |
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parents:
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diff
changeset
|
4749 ml_setflags(buf_T *buf) |
7 | 4750 { |
4751 bhdr_T *hp; | |
4752 ZERO_BL *b0p; | |
4753 | |
4754 if (!buf->b_ml.ml_mfp) | |
4755 return; | |
4756 for (hp = buf->b_ml.ml_mfp->mf_used_last; hp != NULL; hp = hp->bh_prev) | |
4757 { | |
4758 if (hp->bh_bnum == 0) | |
4759 { | |
4760 b0p = (ZERO_BL *)(hp->bh_data); | |
39 | 4761 b0p->b0_dirty = buf->b_changed ? B0_DIRTY : 0; |
4762 b0p->b0_flags = (b0p->b0_flags & ~B0_FF_MASK) | |
4763 | (get_fileformat(buf) + 1); | |
4764 #ifdef FEAT_MBYTE | |
4765 add_b0_fenc(b0p, buf); | |
4766 #endif | |
7 | 4767 hp->bh_flags |= BH_DIRTY; |
4768 mf_sync(buf->b_ml.ml_mfp, MFS_ZERO); | |
4769 break; | |
4770 } | |
4771 } | |
4772 } | |
4773 | |
2267 | 4774 #if defined(FEAT_CRYPT) || defined(PROTO) |
4775 /* | |
4776 * If "data" points to a data block encrypt the text in it and return a copy | |
4777 * in allocated memory. Return NULL when out of memory. | |
4778 * Otherwise return "data". | |
4779 */ | |
4780 char_u * | |
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diff
changeset
|
4781 ml_encrypt_data( |
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parents:
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diff
changeset
|
4782 memfile_T *mfp, |
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parents:
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diff
changeset
|
4783 char_u *data, |
9387
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diff
changeset
|
4784 off_T offset, |
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parents:
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diff
changeset
|
4785 unsigned size) |
2267 | 4786 { |
4787 DATA_BL *dp = (DATA_BL *)data; | |
4788 char_u *head_end; | |
4789 char_u *text_start; | |
4790 char_u *new_data; | |
4791 int text_len; | |
6122 | 4792 cryptstate_T *state; |
2267 | 4793 |
4794 if (dp->db_id != DATA_ID) | |
4795 return data; | |
4796 | |
6817 | 4797 state = ml_crypt_prepare(mfp, offset, FALSE); |
4798 if (state == NULL) | |
4799 return data; | |
4800 | |
2267 | 4801 new_data = (char_u *)alloc(size); |
4802 if (new_data == NULL) | |
4803 return NULL; | |
4804 head_end = (char_u *)(&dp->db_index[dp->db_line_count]); | |
4805 text_start = (char_u *)dp + dp->db_txt_start; | |
4806 text_len = size - dp->db_txt_start; | |
4807 | |
4808 /* Copy the header and the text. */ | |
4809 mch_memmove(new_data, dp, head_end - (char_u *)dp); | |
4810 | |
4811 /* Encrypt the text. */ | |
6122 | 4812 crypt_encode(state, text_start, text_len, new_data + dp->db_txt_start); |
4813 crypt_free_state(state); | |
2267 | 4814 |
4815 /* Clear the gap. */ | |
4816 if (head_end < text_start) | |
4817 vim_memset(new_data + (head_end - data), 0, text_start - head_end); | |
4818 | |
4819 return new_data; | |
4820 } | |
4821 | |
4822 /* | |
6817 | 4823 * Decrypt the text in "data" if it points to an encrypted data block. |
2267 | 4824 */ |
4825 void | |
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diff
changeset
|
4826 ml_decrypt_data( |
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parents:
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diff
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|
4827 memfile_T *mfp, |
41789f16d6b2
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parents:
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diff
changeset
|
4828 char_u *data, |
9387
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parents:
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diff
changeset
|
4829 off_T offset, |
7827
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4830 unsigned size) |
2267 | 4831 { |
4832 DATA_BL *dp = (DATA_BL *)data; | |
4833 char_u *head_end; | |
4834 char_u *text_start; | |
4835 int text_len; | |
6122 | 4836 cryptstate_T *state; |
2267 | 4837 |
4838 if (dp->db_id == DATA_ID) | |
4839 { | |
4840 head_end = (char_u *)(&dp->db_index[dp->db_line_count]); | |
4841 text_start = (char_u *)dp + dp->db_txt_start; | |
4842 text_len = dp->db_txt_end - dp->db_txt_start; | |
4843 | |
4844 if (head_end > text_start || dp->db_txt_start > size | |
4845 || dp->db_txt_end > size) | |
4846 return; /* data was messed up */ | |
4847 | |
6122 | 4848 state = ml_crypt_prepare(mfp, offset, TRUE); |
6817 | 4849 if (state != NULL) |
4850 { | |
4851 /* Decrypt the text in place. */ | |
4852 crypt_decode_inplace(state, text_start, text_len); | |
4853 crypt_free_state(state); | |
4854 } | |
2267 | 4855 } |
4856 } | |
4857 | |
4858 /* | |
4859 * Prepare for encryption/decryption, using the key, seed and offset. | |
6122 | 4860 * Return an allocated cryptstate_T *. |
2267 | 4861 */ |
6122 | 4862 static cryptstate_T * |
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Christian Brabandt <cb@256bit.org>
parents:
9295
diff
changeset
|
4863 ml_crypt_prepare(memfile_T *mfp, off_T offset, int reading) |
2267 | 4864 { |
4865 buf_T *buf = mfp->mf_buffer; | |
4866 char_u salt[50]; | |
6122 | 4867 int method_nr; |
2267 | 4868 char_u *key; |
4869 char_u *seed; | |
4870 | |
4871 if (reading && mfp->mf_old_key != NULL) | |
4872 { | |
4873 /* Reading back blocks with the previous key/method/seed. */ | |
6122 | 4874 method_nr = mfp->mf_old_cm; |
2267 | 4875 key = mfp->mf_old_key; |
4876 seed = mfp->mf_old_seed; | |
4877 } | |
4878 else | |
4879 { | |
6122 | 4880 method_nr = crypt_get_method_nr(buf); |
2267 | 4881 key = buf->b_p_key; |
4882 seed = mfp->mf_seed; | |
4883 } | |
6817 | 4884 if (*key == NUL) |
4885 return NULL; | |
2267 | 4886 |
6122 | 4887 if (method_nr == CRYPT_M_ZIP) |
2267 | 4888 { |
6122 | 4889 /* For PKzip: Append the offset to the key, so that we use a different |
4890 * key for every block. */ | |
2267 | 4891 vim_snprintf((char *)salt, sizeof(salt), "%s%ld", key, (long)offset); |
6122 | 4892 return crypt_create(method_nr, salt, NULL, 0, NULL, 0); |
2267 | 4893 } |
6122 | 4894 |
4895 /* Using blowfish or better: add salt and seed. We use the byte offset | |
4896 * of the block for the salt. */ | |
4897 vim_snprintf((char *)salt, sizeof(salt), "%ld", (long)offset); | |
4898 return crypt_create(method_nr, key, salt, (int)STRLEN(salt), | |
4899 seed, MF_SEED_LEN); | |
2267 | 4900 } |
4901 | |
4902 #endif | |
4903 | |
4904 | |
7 | 4905 #if defined(FEAT_BYTEOFF) || defined(PROTO) |
4906 | |
4907 #define MLCS_MAXL 800 /* max no of lines in chunk */ | |
4908 #define MLCS_MINL 400 /* should be half of MLCS_MAXL */ | |
4909 | |
4910 /* | |
2407
6bc102a4bff8
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Bram Moolenaar <bram@vim.org>
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2394
diff
changeset
|
4911 * Keep information for finding byte offset of a line, updtype may be one of: |
7 | 4912 * ML_CHNK_ADDLINE: Add len to parent chunk, possibly splitting it |
4913 * Careful: ML_CHNK_ADDLINE may cause ml_find_line() to be called. | |
4914 * ML_CHNK_DELLINE: Subtract len from parent chunk, possibly deleting it | |
4915 * ML_CHNK_UPDLINE: Add len to parent chunk, as a signed entity. | |
4916 */ | |
4917 static void | |
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diff
changeset
|
4918 ml_updatechunk( |
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diff
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|
4919 buf_T *buf, |
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diff
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|
4920 linenr_T line, |
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diff
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|
4921 long len, |
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diff
changeset
|
4922 int updtype) |
7 | 4923 { |
4924 static buf_T *ml_upd_lastbuf = NULL; | |
4925 static linenr_T ml_upd_lastline; | |
4926 static linenr_T ml_upd_lastcurline; | |
4927 static int ml_upd_lastcurix; | |
4928 | |
4929 linenr_T curline = ml_upd_lastcurline; | |
4930 int curix = ml_upd_lastcurix; | |
4931 long size; | |
4932 chunksize_T *curchnk; | |
4933 int rest; | |
4934 bhdr_T *hp; | |
4935 DATA_BL *dp; | |
4936 | |
4937 if (buf->b_ml.ml_usedchunks == -1 || len == 0) | |
4938 return; | |
4939 if (buf->b_ml.ml_chunksize == NULL) | |
4940 { | |
4941 buf->b_ml.ml_chunksize = (chunksize_T *) | |
4942 alloc((unsigned)sizeof(chunksize_T) * 100); | |
4943 if (buf->b_ml.ml_chunksize == NULL) | |
4944 { | |
4945 buf->b_ml.ml_usedchunks = -1; | |
4946 return; | |
4947 } | |
4948 buf->b_ml.ml_numchunks = 100; | |
4949 buf->b_ml.ml_usedchunks = 1; | |
4950 buf->b_ml.ml_chunksize[0].mlcs_numlines = 1; | |
4951 buf->b_ml.ml_chunksize[0].mlcs_totalsize = 1; | |
4952 } | |
4953 | |
4954 if (updtype == ML_CHNK_UPDLINE && buf->b_ml.ml_line_count == 1) | |
4955 { | |
4956 /* | |
4957 * First line in empty buffer from ml_flush_line() -- reset | |
4958 */ | |
4959 buf->b_ml.ml_usedchunks = 1; | |
4960 buf->b_ml.ml_chunksize[0].mlcs_numlines = 1; | |
4961 buf->b_ml.ml_chunksize[0].mlcs_totalsize = | |
4962 (long)STRLEN(buf->b_ml.ml_line_ptr) + 1; | |
4963 return; | |
4964 } | |
4965 | |
4966 /* | |
4967 * Find chunk that our line belongs to, curline will be at start of the | |
4968 * chunk. | |
4969 */ | |
4970 if (buf != ml_upd_lastbuf || line != ml_upd_lastline + 1 | |
4971 || updtype != ML_CHNK_ADDLINE) | |
4972 { | |
4973 for (curline = 1, curix = 0; | |
4974 curix < buf->b_ml.ml_usedchunks - 1 | |
4975 && line >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
4976 curix++) | |
4977 { | |
4978 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
4979 } | |
4980 } | |
4981 else if (line >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines | |
4982 && curix < buf->b_ml.ml_usedchunks - 1) | |
4983 { | |
4984 /* Adjust cached curix & curline */ | |
4985 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
4986 curix++; | |
4987 } | |
4988 curchnk = buf->b_ml.ml_chunksize + curix; | |
4989 | |
4990 if (updtype == ML_CHNK_DELLINE) | |
1030 | 4991 len = -len; |
7 | 4992 curchnk->mlcs_totalsize += len; |
4993 if (updtype == ML_CHNK_ADDLINE) | |
4994 { | |
4995 curchnk->mlcs_numlines++; | |
4996 | |
4997 /* May resize here so we don't have to do it in both cases below */ | |
4998 if (buf->b_ml.ml_usedchunks + 1 >= buf->b_ml.ml_numchunks) | |
4999 { | |
6596 | 5000 chunksize_T *t_chunksize = buf->b_ml.ml_chunksize; |
5001 | |
7 | 5002 buf->b_ml.ml_numchunks = buf->b_ml.ml_numchunks * 3 / 2; |
5003 buf->b_ml.ml_chunksize = (chunksize_T *) | |
5004 vim_realloc(buf->b_ml.ml_chunksize, | |
5005 sizeof(chunksize_T) * buf->b_ml.ml_numchunks); | |
5006 if (buf->b_ml.ml_chunksize == NULL) | |
5007 { | |
5008 /* Hmmmm, Give up on offset for this buffer */ | |
6596 | 5009 vim_free(t_chunksize); |
7 | 5010 buf->b_ml.ml_usedchunks = -1; |
5011 return; | |
5012 } | |
5013 } | |
5014 | |
5015 if (buf->b_ml.ml_chunksize[curix].mlcs_numlines >= MLCS_MAXL) | |
5016 { | |
5017 int count; /* number of entries in block */ | |
5018 int idx; | |
5019 int text_end; | |
5020 int linecnt; | |
5021 | |
5022 mch_memmove(buf->b_ml.ml_chunksize + curix + 1, | |
5023 buf->b_ml.ml_chunksize + curix, | |
5024 (buf->b_ml.ml_usedchunks - curix) * | |
5025 sizeof(chunksize_T)); | |
1855 | 5026 /* Compute length of first half of lines in the split chunk */ |
7 | 5027 size = 0; |
5028 linecnt = 0; | |
5029 while (curline < buf->b_ml.ml_line_count | |
5030 && linecnt < MLCS_MINL) | |
5031 { | |
5032 if ((hp = ml_find_line(buf, curline, ML_FIND)) == NULL) | |
5033 { | |
5034 buf->b_ml.ml_usedchunks = -1; | |
5035 return; | |
5036 } | |
5037 dp = (DATA_BL *)(hp->bh_data); | |
5038 count = (long)(buf->b_ml.ml_locked_high) - | |
5039 (long)(buf->b_ml.ml_locked_low) + 1; | |
5040 idx = curline - buf->b_ml.ml_locked_low; | |
5041 curline = buf->b_ml.ml_locked_high + 1; | |
5042 if (idx == 0)/* first line in block, text at the end */ | |
5043 text_end = dp->db_txt_end; | |
5044 else | |
5045 text_end = ((dp->db_index[idx - 1]) & DB_INDEX_MASK); | |
5046 /* Compute index of last line to use in this MEMLINE */ | |
5047 rest = count - idx; | |
5048 if (linecnt + rest > MLCS_MINL) | |
5049 { | |
5050 idx += MLCS_MINL - linecnt - 1; | |
5051 linecnt = MLCS_MINL; | |
5052 } | |
5053 else | |
5054 { | |
5055 idx = count - 1; | |
5056 linecnt += rest; | |
5057 } | |
5058 size += text_end - ((dp->db_index[idx]) & DB_INDEX_MASK); | |
5059 } | |
5060 buf->b_ml.ml_chunksize[curix].mlcs_numlines = linecnt; | |
5061 buf->b_ml.ml_chunksize[curix + 1].mlcs_numlines -= linecnt; | |
5062 buf->b_ml.ml_chunksize[curix].mlcs_totalsize = size; | |
5063 buf->b_ml.ml_chunksize[curix + 1].mlcs_totalsize -= size; | |
5064 buf->b_ml.ml_usedchunks++; | |
5065 ml_upd_lastbuf = NULL; /* Force recalc of curix & curline */ | |
5066 return; | |
5067 } | |
5068 else if (buf->b_ml.ml_chunksize[curix].mlcs_numlines >= MLCS_MINL | |
5069 && curix == buf->b_ml.ml_usedchunks - 1 | |
5070 && buf->b_ml.ml_line_count - line <= 1) | |
5071 { | |
5072 /* | |
5073 * We are in the last chunk and it is cheap to crate a new one | |
5074 * after this. Do it now to avoid the loop above later on | |
5075 */ | |
5076 curchnk = buf->b_ml.ml_chunksize + curix + 1; | |
5077 buf->b_ml.ml_usedchunks++; | |
5078 if (line == buf->b_ml.ml_line_count) | |
5079 { | |
5080 curchnk->mlcs_numlines = 0; | |
5081 curchnk->mlcs_totalsize = 0; | |
5082 } | |
5083 else | |
5084 { | |
5085 /* | |
5086 * Line is just prior to last, move count for last | |
5087 * This is the common case when loading a new file | |
5088 */ | |
5089 hp = ml_find_line(buf, buf->b_ml.ml_line_count, ML_FIND); | |
5090 if (hp == NULL) | |
5091 { | |
5092 buf->b_ml.ml_usedchunks = -1; | |
5093 return; | |
5094 } | |
5095 dp = (DATA_BL *)(hp->bh_data); | |
5096 if (dp->db_line_count == 1) | |
5097 rest = dp->db_txt_end - dp->db_txt_start; | |
5098 else | |
5099 rest = | |
5100 ((dp->db_index[dp->db_line_count - 2]) & DB_INDEX_MASK) | |
5101 - dp->db_txt_start; | |
5102 curchnk->mlcs_totalsize = rest; | |
5103 curchnk->mlcs_numlines = 1; | |
5104 curchnk[-1].mlcs_totalsize -= rest; | |
5105 curchnk[-1].mlcs_numlines -= 1; | |
5106 } | |
5107 } | |
5108 } | |
5109 else if (updtype == ML_CHNK_DELLINE) | |
5110 { | |
5111 curchnk->mlcs_numlines--; | |
5112 ml_upd_lastbuf = NULL; /* Force recalc of curix & curline */ | |
5113 if (curix < (buf->b_ml.ml_usedchunks - 1) | |
5114 && (curchnk->mlcs_numlines + curchnk[1].mlcs_numlines) | |
5115 <= MLCS_MINL) | |
5116 { | |
5117 curix++; | |
5118 curchnk = buf->b_ml.ml_chunksize + curix; | |
5119 } | |
5120 else if (curix == 0 && curchnk->mlcs_numlines <= 0) | |
5121 { | |
5122 buf->b_ml.ml_usedchunks--; | |
5123 mch_memmove(buf->b_ml.ml_chunksize, buf->b_ml.ml_chunksize + 1, | |
5124 buf->b_ml.ml_usedchunks * sizeof(chunksize_T)); | |
5125 return; | |
5126 } | |
5127 else if (curix == 0 || (curchnk->mlcs_numlines > 10 | |
5128 && (curchnk->mlcs_numlines + curchnk[-1].mlcs_numlines) | |
5129 > MLCS_MINL)) | |
5130 { | |
5131 return; | |
5132 } | |
5133 | |
5134 /* Collapse chunks */ | |
5135 curchnk[-1].mlcs_numlines += curchnk->mlcs_numlines; | |
5136 curchnk[-1].mlcs_totalsize += curchnk->mlcs_totalsize; | |
5137 buf->b_ml.ml_usedchunks--; | |
5138 if (curix < buf->b_ml.ml_usedchunks) | |
5139 { | |
5140 mch_memmove(buf->b_ml.ml_chunksize + curix, | |
5141 buf->b_ml.ml_chunksize + curix + 1, | |
5142 (buf->b_ml.ml_usedchunks - curix) * | |
5143 sizeof(chunksize_T)); | |
5144 } | |
5145 return; | |
5146 } | |
5147 ml_upd_lastbuf = buf; | |
5148 ml_upd_lastline = line; | |
5149 ml_upd_lastcurline = curline; | |
5150 ml_upd_lastcurix = curix; | |
5151 } | |
5152 | |
5153 /* | |
5154 * Find offset for line or line with offset. | |
169 | 5155 * Find line with offset if "lnum" is 0; return remaining offset in offp |
5156 * Find offset of line if "lnum" > 0 | |
7 | 5157 * return -1 if information is not available |
5158 */ | |
5159 long | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
5160 ml_find_line_or_offset(buf_T *buf, linenr_T lnum, long *offp) |
7 | 5161 { |
5162 linenr_T curline; | |
5163 int curix; | |
5164 long size; | |
5165 bhdr_T *hp; | |
5166 DATA_BL *dp; | |
5167 int count; /* number of entries in block */ | |
5168 int idx; | |
5169 int start_idx; | |
5170 int text_end; | |
5171 long offset; | |
5172 int len; | |
5173 int ffdos = (get_fileformat(buf) == EOL_DOS); | |
5174 int extra = 0; | |
5175 | |
169 | 5176 /* take care of cached line first */ |
5177 ml_flush_line(curbuf); | |
5178 | |
7 | 5179 if (buf->b_ml.ml_usedchunks == -1 |
5180 || buf->b_ml.ml_chunksize == NULL | |
169 | 5181 || lnum < 0) |
7 | 5182 return -1; |
5183 | |
5184 if (offp == NULL) | |
5185 offset = 0; | |
5186 else | |
5187 offset = *offp; | |
169 | 5188 if (lnum == 0 && offset <= 0) |
7 | 5189 return 1; /* Not a "find offset" and offset 0 _must_ be in line 1 */ |
5190 /* | |
5191 * Find the last chunk before the one containing our line. Last chunk is | |
5192 * special because it will never qualify | |
5193 */ | |
5194 curline = 1; | |
5195 curix = size = 0; | |
5196 while (curix < buf->b_ml.ml_usedchunks - 1 | |
169 | 5197 && ((lnum != 0 |
5198 && lnum >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines) | |
7 | 5199 || (offset != 0 |
5200 && offset > size + buf->b_ml.ml_chunksize[curix].mlcs_totalsize | |
5201 + ffdos * buf->b_ml.ml_chunksize[curix].mlcs_numlines))) | |
5202 { | |
5203 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
5204 size += buf->b_ml.ml_chunksize[curix].mlcs_totalsize; | |
5205 if (offset && ffdos) | |
5206 size += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
5207 curix++; | |
5208 } | |
5209 | |
169 | 5210 while ((lnum != 0 && curline < lnum) || (offset != 0 && size < offset)) |
7 | 5211 { |
5212 if (curline > buf->b_ml.ml_line_count | |
5213 || (hp = ml_find_line(buf, curline, ML_FIND)) == NULL) | |
5214 return -1; | |
5215 dp = (DATA_BL *)(hp->bh_data); | |
5216 count = (long)(buf->b_ml.ml_locked_high) - | |
5217 (long)(buf->b_ml.ml_locked_low) + 1; | |
5218 start_idx = idx = curline - buf->b_ml.ml_locked_low; | |
5219 if (idx == 0)/* first line in block, text at the end */ | |
5220 text_end = dp->db_txt_end; | |
5221 else | |
5222 text_end = ((dp->db_index[idx - 1]) & DB_INDEX_MASK); | |
5223 /* Compute index of last line to use in this MEMLINE */ | |
169 | 5224 if (lnum != 0) |
7 | 5225 { |
169 | 5226 if (curline + (count - idx) >= lnum) |
5227 idx += lnum - curline - 1; | |
7 | 5228 else |
5229 idx = count - 1; | |
5230 } | |
5231 else | |
5232 { | |
5233 extra = 0; | |
5234 while (offset >= size | |
5235 + text_end - (int)((dp->db_index[idx]) & DB_INDEX_MASK) | |
5236 + ffdos) | |
5237 { | |
5238 if (ffdos) | |
5239 size++; | |
5240 if (idx == count - 1) | |
5241 { | |
5242 extra = 1; | |
5243 break; | |
5244 } | |
5245 idx++; | |
5246 } | |
5247 } | |
5248 len = text_end - ((dp->db_index[idx]) & DB_INDEX_MASK); | |
5249 size += len; | |
5250 if (offset != 0 && size >= offset) | |
5251 { | |
5252 if (size + ffdos == offset) | |
5253 *offp = 0; | |
5254 else if (idx == start_idx) | |
5255 *offp = offset - size + len; | |
5256 else | |
5257 *offp = offset - size + len | |
5258 - (text_end - ((dp->db_index[idx - 1]) & DB_INDEX_MASK)); | |
5259 curline += idx - start_idx + extra; | |
5260 if (curline > buf->b_ml.ml_line_count) | |
5261 return -1; /* exactly one byte beyond the end */ | |
5262 return curline; | |
5263 } | |
5264 curline = buf->b_ml.ml_locked_high + 1; | |
5265 } | |
5266 | |
169 | 5267 if (lnum != 0) |
20 | 5268 { |
5269 /* Count extra CR characters. */ | |
5270 if (ffdos) | |
169 | 5271 size += lnum - 1; |
20 | 5272 |
6933 | 5273 /* Don't count the last line break if 'noeol' and ('bin' or |
5274 * 'nofixeol'). */ | |
5275 if ((!buf->b_p_fixeol || buf->b_p_bin) && !buf->b_p_eol | |
5276 && buf->b_ml.ml_line_count == lnum) | |
20 | 5277 size -= ffdos + 1; |
5278 } | |
5279 | |
7 | 5280 return size; |
5281 } | |
5282 | |
5283 /* | |
5284 * Goto byte in buffer with offset 'cnt'. | |
5285 */ | |
5286 void | |
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
5287 goto_byte(long cnt) |
7 | 5288 { |
5289 long boff = cnt; | |
5290 linenr_T lnum; | |
5291 | |
5292 ml_flush_line(curbuf); /* cached line may be dirty */ | |
5293 setpcmark(); | |
5294 if (boff) | |
5295 --boff; | |
5296 lnum = ml_find_line_or_offset(curbuf, (linenr_T)0, &boff); | |
5297 if (lnum < 1) /* past the end */ | |
5298 { | |
5299 curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; | |
5300 curwin->w_curswant = MAXCOL; | |
5301 coladvance((colnr_T)MAXCOL); | |
5302 } | |
5303 else | |
5304 { | |
5305 curwin->w_cursor.lnum = lnum; | |
5306 curwin->w_cursor.col = (colnr_T)boff; | |
572 | 5307 # ifdef FEAT_VIRTUALEDIT |
5308 curwin->w_cursor.coladd = 0; | |
5309 # endif | |
7 | 5310 curwin->w_set_curswant = TRUE; |
5311 } | |
5312 check_cursor(); | |
5313 | |
5314 # ifdef FEAT_MBYTE | |
5315 /* Make sure the cursor is on the first byte of a multi-byte char. */ | |
5316 if (has_mbyte) | |
5317 mb_adjust_cursor(); | |
5318 # endif | |
5319 } | |
5320 #endif |