Mercurial > vim
annotate src/memline.c @ 7827:41789f16d6b2 v7.4.1210
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Author: Bram Moolenaar <Bram@vim.org>
Date: Sat Jan 30 18:51:09 2016 +0100
patch 7.4.1210
Problem: Using old style function declarations.
Solution: Change to new style function declarations. (script by Hirohito
Higashi)
| author | Christian Brabandt <cb@256bit.org> |
|---|---|
| date | Sat, 30 Jan 2016 19:00:05 +0100 |
| parents | 37c929c4a073 |
| children | e7afe45a202a |
| rev | line source |
|---|---|
| 7 | 1 /* vi:set ts=8 sts=4 sw=4: |
| 2 * | |
| 3 * VIM - Vi IMproved by Bram Moolenaar | |
| 4 * | |
| 5 * Do ":help uganda" in Vim to read copying and usage conditions. | |
| 6 * Do ":help credits" in Vim to see a list of people who contributed. | |
| 7 * See README.txt for an overview of the Vim source code. | |
| 8 */ | |
| 9 | |
| 10 /* for debugging */ | |
| 11 /* #define CHECK(c, s) if (c) EMSG(s) */ | |
| 12 #define CHECK(c, s) | |
| 13 | |
| 14 /* | |
| 15 * memline.c: Contains the functions for appending, deleting and changing the | |
| 625 | 16 * text lines. The memfile functions are used to store the information in |
| 17 * blocks of memory, backed up by a file. The structure of the information is | |
| 18 * a tree. The root of the tree is a pointer block. The leaves of the tree | |
| 19 * are data blocks. In between may be several layers of pointer blocks, | |
| 20 * forming branches. | |
| 7 | 21 * |
| 22 * Three types of blocks are used: | |
| 23 * - Block nr 0 contains information for recovery | |
| 24 * - Pointer blocks contain list of pointers to other blocks. | |
| 25 * - Data blocks contain the actual text. | |
| 26 * | |
| 27 * Block nr 0 contains the block0 structure (see below). | |
| 28 * | |
| 29 * Block nr 1 is the first pointer block. It is the root of the tree. | |
| 30 * Other pointer blocks are branches. | |
| 31 * | |
| 32 * If a line is too big to fit in a single page, the block containing that | |
| 33 * line is made big enough to hold the line. It may span several pages. | |
| 34 * Otherwise all blocks are one page. | |
| 35 * | |
| 36 * A data block that was filled when starting to edit a file and was not | |
| 37 * changed since then, can have a negative block number. This means that it | |
| 38 * has not yet been assigned a place in the file. When recovering, the lines | |
| 39 * in this data block can be read from the original file. When the block is | |
| 40 * changed (lines appended/deleted/changed) or when it is flushed it gets a | |
| 41 * positive number. Use mf_trans_del() to get the new number, before calling | |
| 42 * mf_get(). | |
| 43 */ | |
| 44 | |
| 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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commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
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256 static bhdr_T *ml_find_line(buf_T *, linenr_T, int); |
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257 static int ml_add_stack(buf_T *); |
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258 static void ml_lineadd(buf_T *, int); |
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259 static int b0_magic_wrong(ZERO_BL *); |
| 7 | 260 #ifdef CHECK_INODE |
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261 static int fnamecmp_ino(char_u *, char_u *, long); |
| 7 | 262 #endif |
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263 static void long_to_char(long, char_u *); |
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264 static long char_to_long(char_u *); |
| 7 | 265 #if defined(UNIX) || defined(WIN3264) |
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266 static char_u *make_percent_swname(char_u *dir, char_u *name); |
| 7 | 267 #endif |
| 2267 | 268 #ifdef FEAT_CRYPT |
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269 static cryptstate_T *ml_crypt_prepare(memfile_T *mfp, off_t offset, int reading); |
| 2267 | 270 #endif |
| 7 | 271 #ifdef FEAT_BYTEOFF |
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272 static void ml_updatechunk(buf_T *buf, long line, long len, int updtype); |
| 7 | 273 #endif |
| 274 | |
| 275 /* | |
| 625 | 276 * Open a new memline for "buf". |
| 7 | 277 * |
| 625 | 278 * Return FAIL for failure, OK otherwise. |
| 7 | 279 */ |
| 280 int | |
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281 ml_open(buf_T *buf) |
| 7 | 282 { |
| 283 memfile_T *mfp; | |
| 284 bhdr_T *hp = NULL; | |
| 285 ZERO_BL *b0p; | |
| 286 PTR_BL *pp; | |
| 287 DATA_BL *dp; | |
| 288 | |
| 625 | 289 /* |
| 290 * init fields in memline struct | |
| 291 */ | |
| 2267 | 292 buf->b_ml.ml_stack_size = 0; /* no stack yet */ |
| 625 | 293 buf->b_ml.ml_stack = NULL; /* no stack yet */ |
| 294 buf->b_ml.ml_stack_top = 0; /* nothing in the stack */ | |
| 295 buf->b_ml.ml_locked = NULL; /* no cached block */ | |
| 296 buf->b_ml.ml_line_lnum = 0; /* no cached line */ | |
| 7 | 297 #ifdef FEAT_BYTEOFF |
| 625 | 298 buf->b_ml.ml_chunksize = NULL; |
| 7 | 299 #endif |
| 300 | |
| 5737 | 301 if (cmdmod.noswapfile) |
| 302 buf->b_p_swf = FALSE; | |
| 303 | |
| 625 | 304 /* |
| 305 * When 'updatecount' is non-zero swap file may be opened later. | |
| 306 */ | |
| 307 if (p_uc && buf->b_p_swf) | |
| 308 buf->b_may_swap = TRUE; | |
| 7 | 309 else |
| 625 | 310 buf->b_may_swap = FALSE; |
| 311 | |
| 312 /* | |
| 313 * Open the memfile. No swap file is created yet. | |
| 314 */ | |
| 7 | 315 mfp = mf_open(NULL, 0); |
| 316 if (mfp == NULL) | |
| 317 goto error; | |
| 318 | |
| 625 | 319 buf->b_ml.ml_mfp = mfp; |
| 2267 | 320 #ifdef FEAT_CRYPT |
| 321 mfp->mf_buffer = buf; | |
| 322 #endif | |
| 625 | 323 buf->b_ml.ml_flags = ML_EMPTY; |
| 324 buf->b_ml.ml_line_count = 1; | |
| 13 | 325 #ifdef FEAT_LINEBREAK |
| 326 curwin->w_nrwidth_line_count = 0; | |
| 327 #endif | |
| 7 | 328 |
| 329 #if defined(MSDOS) && !defined(DJGPP) | |
| 330 /* for 16 bit MS-DOS create a swapfile now, because we run out of | |
| 331 * memory very quickly */ | |
| 332 if (p_uc != 0) | |
| 625 | 333 ml_open_file(buf); |
| 7 | 334 #endif |
| 335 | |
| 336 /* | |
| 337 * fill block0 struct and write page 0 | |
| 338 */ | |
| 339 if ((hp = mf_new(mfp, FALSE, 1)) == NULL) | |
| 340 goto error; | |
| 341 if (hp->bh_bnum != 0) | |
| 342 { | |
| 343 EMSG(_("E298: Didn't get block nr 0?")); | |
| 344 goto error; | |
| 345 } | |
| 346 b0p = (ZERO_BL *)(hp->bh_data); | |
| 347 | |
| 348 b0p->b0_id[0] = BLOCK0_ID0; | |
| 349 b0p->b0_id[1] = BLOCK0_ID1; | |
| 350 b0p->b0_magic_long = (long)B0_MAGIC_LONG; | |
| 351 b0p->b0_magic_int = (int)B0_MAGIC_INT; | |
| 352 b0p->b0_magic_short = (short)B0_MAGIC_SHORT; | |
| 353 b0p->b0_magic_char = B0_MAGIC_CHAR; | |
| 354 STRNCPY(b0p->b0_version, "VIM ", 4); | |
| 355 STRNCPY(b0p->b0_version + 4, Version, 6); | |
| 356 long_to_char((long)mfp->mf_page_size, b0p->b0_page_size); | |
| 625 | 357 |
| 800 | 358 #ifdef FEAT_SPELL |
| 359 if (!buf->b_spell) | |
| 360 #endif | |
| 625 | 361 { |
| 362 b0p->b0_dirty = buf->b_changed ? B0_DIRTY : 0; | |
| 363 b0p->b0_flags = get_fileformat(buf) + 1; | |
| 364 set_b0_fname(b0p, buf); | |
| 365 (void)get_user_name(b0p->b0_uname, B0_UNAME_SIZE); | |
| 366 b0p->b0_uname[B0_UNAME_SIZE - 1] = NUL; | |
| 367 mch_get_host_name(b0p->b0_hname, B0_HNAME_SIZE); | |
| 368 b0p->b0_hname[B0_HNAME_SIZE - 1] = NUL; | |
| 369 long_to_char(mch_get_pid(), b0p->b0_pid); | |
| 2267 | 370 #ifdef FEAT_CRYPT |
| 6122 | 371 ml_set_b0_crypt(buf, b0p); |
| 2267 | 372 #endif |
| 625 | 373 } |
| 7 | 374 |
| 375 /* | |
| 376 * Always sync block number 0 to disk, so we can check the file name in | |
| 2267 | 377 * the swap file in findswapname(). Don't do this for a help files or |
| 378 * a spell buffer though. | |
| 7 | 379 * Only works when there's a swapfile, otherwise it's done when the file |
| 380 * is created. | |
| 381 */ | |
| 382 mf_put(mfp, hp, TRUE, FALSE); | |
| 625 | 383 if (!buf->b_help && !B_SPELL(buf)) |
| 7 | 384 (void)mf_sync(mfp, 0); |
| 385 | |
| 625 | 386 /* |
| 387 * Fill in root pointer block and write page 1. | |
| 388 */ | |
| 7 | 389 if ((hp = ml_new_ptr(mfp)) == NULL) |
| 390 goto error; | |
| 391 if (hp->bh_bnum != 1) | |
| 392 { | |
| 393 EMSG(_("E298: Didn't get block nr 1?")); | |
| 394 goto error; | |
| 395 } | |
| 396 pp = (PTR_BL *)(hp->bh_data); | |
| 397 pp->pb_count = 1; | |
| 398 pp->pb_pointer[0].pe_bnum = 2; | |
| 399 pp->pb_pointer[0].pe_page_count = 1; | |
| 400 pp->pb_pointer[0].pe_old_lnum = 1; | |
| 401 pp->pb_pointer[0].pe_line_count = 1; /* line count after insertion */ | |
| 402 mf_put(mfp, hp, TRUE, FALSE); | |
| 403 | |
| 625 | 404 /* |
| 405 * Allocate first data block and create an empty line 1. | |
| 406 */ | |
| 7 | 407 if ((hp = ml_new_data(mfp, FALSE, 1)) == NULL) |
| 408 goto error; | |
| 409 if (hp->bh_bnum != 2) | |
| 410 { | |
| 411 EMSG(_("E298: Didn't get block nr 2?")); | |
| 412 goto error; | |
| 413 } | |
| 414 | |
| 415 dp = (DATA_BL *)(hp->bh_data); | |
| 416 dp->db_index[0] = --dp->db_txt_start; /* at end of block */ | |
| 417 dp->db_free -= 1 + INDEX_SIZE; | |
| 418 dp->db_line_count = 1; | |
| 2003 | 419 *((char_u *)dp + dp->db_txt_start) = NUL; /* empty line */ |
| 7 | 420 |
| 421 return OK; | |
| 422 | |
| 423 error: | |
| 424 if (mfp != NULL) | |
| 425 { | |
| 426 if (hp) | |
| 427 mf_put(mfp, hp, FALSE, FALSE); | |
| 428 mf_close(mfp, TRUE); /* will also free(mfp->mf_fname) */ | |
| 429 } | |
| 625 | 430 buf->b_ml.ml_mfp = NULL; |
| 7 | 431 return FAIL; |
| 432 } | |
| 433 | |
| 2267 | 434 #if defined(FEAT_CRYPT) || defined(PROTO) |
| 435 /* | |
| 6130 | 436 * Prepare encryption for "buf" for the current key and method. |
| 437 */ | |
| 438 static void | |
|
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439 ml_set_mfp_crypt(buf_T *buf) |
| 6130 | 440 { |
| 441 if (*buf->b_p_key != NUL) | |
| 442 { | |
| 443 int method_nr = crypt_get_method_nr(buf); | |
| 444 | |
| 445 if (method_nr > CRYPT_M_ZIP) | |
| 446 { | |
| 447 /* Generate a seed and store it in the memfile. */ | |
| 448 sha2_seed(buf->b_ml.ml_mfp->mf_seed, MF_SEED_LEN, NULL, 0); | |
| 449 } | |
| 450 } | |
| 451 } | |
| 452 | |
| 453 /* | |
| 2267 | 454 * Prepare encryption for "buf" with block 0 "b0p". |
| 455 */ | |
| 456 static void | |
|
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457 ml_set_b0_crypt(buf_T *buf, ZERO_BL *b0p) |
| 2267 | 458 { |
| 459 if (*buf->b_p_key == NUL) | |
| 460 b0p->b0_id[1] = BLOCK0_ID1; | |
| 461 else | |
| 462 { | |
| 6122 | 463 int method_nr = crypt_get_method_nr(buf); |
| 464 | |
| 465 b0p->b0_id[1] = id1_codes[method_nr]; | |
| 466 if (method_nr > CRYPT_M_ZIP) | |
| 2267 | 467 { |
| 468 /* Generate a seed and store it in block 0 and in the memfile. */ | |
| 469 sha2_seed(&b0p->b0_seed, MF_SEED_LEN, NULL, 0); | |
| 470 mch_memmove(buf->b_ml.ml_mfp->mf_seed, &b0p->b0_seed, MF_SEED_LEN); | |
| 471 } | |
| 472 } | |
| 473 } | |
| 474 | |
| 475 /* | |
| 476 * Called after the crypt key or 'cryptmethod' was changed for "buf". | |
| 477 * Will apply this to the swapfile. | |
| 478 * "old_key" is the previous key. It is equal to buf->b_p_key when | |
| 479 * 'cryptmethod' is changed. | |
|
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480 * "old_cm" is the previous 'cryptmethod'. It is equal to the current |
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481 * 'cryptmethod' when 'key' is changed. |
| 2267 | 482 */ |
| 483 void | |
|
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484 ml_set_crypt_key( |
|
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485 buf_T *buf, |
|
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486 char_u *old_key, |
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487 char_u *old_cm) |
| 2267 | 488 { |
| 489 memfile_T *mfp = buf->b_ml.ml_mfp; | |
| 490 bhdr_T *hp; | |
| 491 int page_count; | |
| 492 int idx; | |
| 493 long error; | |
| 494 infoptr_T *ip; | |
| 495 PTR_BL *pp; | |
| 496 DATA_BL *dp; | |
| 497 blocknr_T bnum; | |
| 498 int top; | |
| 6817 | 499 int old_method; |
| 2267 | 500 |
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501 if (mfp == NULL) |
| 2267 | 502 return; /* no memfile yet, nothing to do */ |
| 6817 | 503 old_method = crypt_method_nr_from_name(old_cm); |
| 504 | |
| 505 /* First make sure the swapfile is in a consistent state, using the old | |
| 506 * key and method. */ | |
| 507 { | |
| 508 char_u *new_key = buf->b_p_key; | |
| 509 char_u *new_buf_cm = buf->b_p_cm; | |
| 510 | |
| 511 buf->b_p_key = old_key; | |
| 512 buf->b_p_cm = old_cm; | |
| 513 ml_preserve(buf, FALSE); | |
| 514 buf->b_p_key = new_key; | |
| 515 buf->b_p_cm = new_buf_cm; | |
| 516 } | |
| 2267 | 517 |
| 518 /* Set the key, method and seed to be used for reading, these must be the | |
| 519 * old values. */ | |
| 520 mfp->mf_old_key = old_key; | |
| 6817 | 521 mfp->mf_old_cm = old_method; |
| 522 if (old_method > 0 && *old_key != NUL) | |
| 2267 | 523 mch_memmove(mfp->mf_old_seed, mfp->mf_seed, MF_SEED_LEN); |
| 524 | |
| 525 /* Update block 0 with the crypt flag and may set a new seed. */ | |
| 526 ml_upd_block0(buf, UB_CRYPT); | |
| 527 | |
| 528 if (mfp->mf_infile_count > 2) | |
| 529 { | |
| 530 /* | |
| 531 * Need to read back all data blocks from disk, decrypt them with the | |
| 532 * old key/method and mark them to be written. The algorithm is | |
| 533 * similar to what happens in ml_recover(), but we skip negative block | |
| 534 * numbers. | |
| 535 */ | |
| 536 ml_flush_line(buf); /* flush buffered line */ | |
| 537 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
| 538 | |
| 539 hp = NULL; | |
| 540 bnum = 1; /* start with block 1 */ | |
| 541 page_count = 1; /* which is 1 page */ | |
| 542 idx = 0; /* start with first index in block 1 */ | |
| 543 error = 0; | |
| 544 buf->b_ml.ml_stack_top = 0; | |
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545 vim_free(buf->b_ml.ml_stack); |
| 2267 | 546 buf->b_ml.ml_stack = NULL; |
| 547 buf->b_ml.ml_stack_size = 0; /* no stack yet */ | |
| 548 | |
| 549 for ( ; !got_int; line_breakcheck()) | |
| 550 { | |
| 551 if (hp != NULL) | |
| 552 mf_put(mfp, hp, FALSE, FALSE); /* release previous block */ | |
| 553 | |
| 554 /* get the block (pointer or data) */ | |
| 555 if ((hp = mf_get(mfp, (blocknr_T)bnum, page_count)) == NULL) | |
| 556 { | |
| 557 if (bnum == 1) | |
| 558 break; | |
| 559 ++error; | |
| 560 } | |
| 561 else | |
| 562 { | |
| 563 pp = (PTR_BL *)(hp->bh_data); | |
| 564 if (pp->pb_id == PTR_ID) /* it is a pointer block */ | |
| 565 { | |
| 566 if (pp->pb_count == 0) | |
| 567 { | |
| 568 /* empty block? */ | |
| 569 ++error; | |
| 570 } | |
| 571 else if (idx < (int)pp->pb_count) /* go a block deeper */ | |
| 572 { | |
| 573 if (pp->pb_pointer[idx].pe_bnum < 0) | |
| 574 { | |
| 6817 | 575 /* Skip data block with negative block number. |
| 576 * Should not happen, because of the ml_preserve() | |
| 577 * above. Get same block again for next index. */ | |
| 578 ++idx; | |
| 2267 | 579 continue; |
| 580 } | |
| 581 | |
| 582 /* going one block deeper in the tree, new entry in | |
| 583 * stack */ | |
| 584 if ((top = ml_add_stack(buf)) < 0) | |
| 585 { | |
| 586 ++error; | |
| 587 break; /* out of memory */ | |
| 588 } | |
| 589 ip = &(buf->b_ml.ml_stack[top]); | |
| 590 ip->ip_bnum = bnum; | |
| 591 ip->ip_index = idx; | |
| 592 | |
| 593 bnum = pp->pb_pointer[idx].pe_bnum; | |
| 594 page_count = pp->pb_pointer[idx].pe_page_count; | |
| 6817 | 595 idx = 0; |
| 2267 | 596 continue; |
| 597 } | |
| 598 } | |
| 599 else /* not a pointer block */ | |
| 600 { | |
| 601 dp = (DATA_BL *)(hp->bh_data); | |
| 602 if (dp->db_id != DATA_ID) /* block id wrong */ | |
| 603 ++error; | |
| 604 else | |
| 605 { | |
| 606 /* It is a data block, need to write it back to disk. */ | |
| 607 mf_put(mfp, hp, TRUE, FALSE); | |
| 608 hp = NULL; | |
| 609 } | |
| 610 } | |
| 611 } | |
| 612 | |
| 613 if (buf->b_ml.ml_stack_top == 0) /* finished */ | |
| 614 break; | |
| 615 | |
| 616 /* go one block up in the tree */ | |
| 617 ip = &(buf->b_ml.ml_stack[--(buf->b_ml.ml_stack_top)]); | |
| 618 bnum = ip->ip_bnum; | |
| 619 idx = ip->ip_index + 1; /* go to next index */ | |
| 620 page_count = 1; | |
| 621 } | |
| 6817 | 622 if (hp != NULL) |
| 623 mf_put(mfp, hp, FALSE, FALSE); /* release previous block */ | |
| 2657 | 624 |
| 625 if (error > 0) | |
| 626 EMSG(_("E843: Error while updating swap file crypt")); | |
| 2267 | 627 } |
| 628 | |
| 629 mfp->mf_old_key = NULL; | |
| 630 } | |
| 631 #endif | |
| 632 | |
| 7 | 633 /* |
| 634 * ml_setname() is called when the file name of "buf" has been changed. | |
| 635 * It may rename the swap file. | |
| 636 */ | |
| 637 void | |
|
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638 ml_setname(buf_T *buf) |
| 7 | 639 { |
| 640 int success = FALSE; | |
| 641 memfile_T *mfp; | |
| 642 char_u *fname; | |
| 643 char_u *dirp; | |
| 644 #if defined(MSDOS) || defined(MSWIN) | |
| 645 char_u *p; | |
| 646 #endif | |
| 647 | |
| 648 mfp = buf->b_ml.ml_mfp; | |
| 649 if (mfp->mf_fd < 0) /* there is no swap file yet */ | |
| 650 { | |
| 651 /* | |
| 652 * When 'updatecount' is 0 and 'noswapfile' there is no swap file. | |
| 653 * For help files we will make a swap file now. | |
| 654 */ | |
| 5737 | 655 if (p_uc != 0 && !cmdmod.noswapfile) |
| 7 | 656 ml_open_file(buf); /* create a swap file */ |
| 657 return; | |
| 658 } | |
| 659 | |
| 660 /* | |
| 661 * Try all directories in the 'directory' option. | |
| 662 */ | |
| 663 dirp = p_dir; | |
| 664 for (;;) | |
| 665 { | |
| 666 if (*dirp == NUL) /* tried all directories, fail */ | |
| 667 break; | |
| 43 | 668 fname = findswapname(buf, &dirp, mfp->mf_fname); |
| 669 /* alloc's fname */ | |
| 3158 | 670 if (dirp == NULL) /* out of memory */ |
| 671 break; | |
| 7 | 672 if (fname == NULL) /* no file name found for this dir */ |
| 673 continue; | |
| 674 | |
| 675 #if defined(MSDOS) || defined(MSWIN) | |
| 676 /* | |
| 677 * Set full pathname for swap file now, because a ":!cd dir" may | |
| 678 * change directory without us knowing it. | |
| 679 */ | |
| 680 p = FullName_save(fname, FALSE); | |
| 681 vim_free(fname); | |
| 682 fname = p; | |
| 683 if (fname == NULL) | |
| 684 continue; | |
| 685 #endif | |
| 686 /* if the file name is the same we don't have to do anything */ | |
| 687 if (fnamecmp(fname, mfp->mf_fname) == 0) | |
| 688 { | |
| 689 vim_free(fname); | |
| 690 success = TRUE; | |
| 691 break; | |
| 692 } | |
| 693 /* need to close the swap file before renaming */ | |
| 694 if (mfp->mf_fd >= 0) | |
| 695 { | |
| 696 close(mfp->mf_fd); | |
| 697 mfp->mf_fd = -1; | |
| 698 } | |
| 699 | |
| 700 /* try to rename the swap file */ | |
| 701 if (vim_rename(mfp->mf_fname, fname) == 0) | |
| 702 { | |
| 703 success = TRUE; | |
| 704 vim_free(mfp->mf_fname); | |
| 705 mfp->mf_fname = fname; | |
| 706 vim_free(mfp->mf_ffname); | |
| 707 #if defined(MSDOS) || defined(MSWIN) | |
| 708 mfp->mf_ffname = NULL; /* mf_fname is full pathname already */ | |
| 709 #else | |
| 710 mf_set_ffname(mfp); | |
| 711 #endif | |
| 2267 | 712 ml_upd_block0(buf, UB_SAME_DIR); |
| 7 | 713 break; |
| 714 } | |
| 715 vim_free(fname); /* this fname didn't work, try another */ | |
| 716 } | |
| 717 | |
| 718 if (mfp->mf_fd == -1) /* need to (re)open the swap file */ | |
| 719 { | |
| 720 mfp->mf_fd = mch_open((char *)mfp->mf_fname, O_RDWR | O_EXTRA, 0); | |
| 721 if (mfp->mf_fd < 0) | |
| 722 { | |
| 723 /* could not (re)open the swap file, what can we do???? */ | |
| 724 EMSG(_("E301: Oops, lost the swap file!!!")); | |
| 725 return; | |
| 726 } | |
| 2003 | 727 #ifdef HAVE_FD_CLOEXEC |
| 728 { | |
| 729 int fdflags = fcntl(mfp->mf_fd, F_GETFD); | |
| 730 if (fdflags >= 0 && (fdflags & FD_CLOEXEC) == 0) | |
| 731 fcntl(mfp->mf_fd, F_SETFD, fdflags | FD_CLOEXEC); | |
| 732 } | |
| 733 #endif | |
| 7 | 734 } |
| 735 if (!success) | |
| 736 EMSG(_("E302: Could not rename swap file")); | |
| 737 } | |
| 738 | |
| 739 /* | |
| 740 * Open a file for the memfile for all buffers that are not readonly or have | |
| 741 * been modified. | |
| 742 * Used when 'updatecount' changes from zero to non-zero. | |
| 743 */ | |
| 744 void | |
|
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745 ml_open_files(void) |
| 7 | 746 { |
| 747 buf_T *buf; | |
| 748 | |
| 749 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
| 750 if (!buf->b_p_ro || buf->b_changed) | |
| 751 ml_open_file(buf); | |
| 752 } | |
| 753 | |
| 754 /* | |
| 755 * Open a swap file for an existing memfile, if there is no swap file yet. | |
| 756 * If we are unable to find a file name, mf_fname will be NULL | |
| 757 * and the memfile will be in memory only (no recovery possible). | |
| 758 */ | |
| 759 void | |
|
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760 ml_open_file(buf_T *buf) |
| 7 | 761 { |
| 762 memfile_T *mfp; | |
| 763 char_u *fname; | |
| 764 char_u *dirp; | |
| 765 | |
| 766 mfp = buf->b_ml.ml_mfp; | |
| 5737 | 767 if (mfp == NULL || mfp->mf_fd >= 0 || !buf->b_p_swf || cmdmod.noswapfile) |
| 7 | 768 return; /* nothing to do */ |
| 769 | |
| 748 | 770 #ifdef FEAT_SPELL |
| 625 | 771 /* For a spell buffer use a temp file name. */ |
| 772 if (buf->b_spell) | |
| 773 { | |
| 6721 | 774 fname = vim_tempname('s', FALSE); |
| 625 | 775 if (fname != NULL) |
| 776 (void)mf_open_file(mfp, fname); /* consumes fname! */ | |
| 777 buf->b_may_swap = FALSE; | |
| 778 return; | |
| 779 } | |
| 780 #endif | |
| 781 | |
| 7 | 782 /* |
| 783 * Try all directories in 'directory' option. | |
| 784 */ | |
| 785 dirp = p_dir; | |
| 786 for (;;) | |
| 787 { | |
| 788 if (*dirp == NUL) | |
| 789 break; | |
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790 /* There is a small chance that between choosing the swap file name |
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791 * and creating it, another Vim creates the file. In that case the |
| 7 | 792 * creation will fail and we will use another directory. */ |
| 43 | 793 fname = findswapname(buf, &dirp, NULL); /* allocates fname */ |
| 3158 | 794 if (dirp == NULL) |
| 795 break; /* out of memory */ | |
| 7 | 796 if (fname == NULL) |
| 797 continue; | |
| 798 if (mf_open_file(mfp, fname) == OK) /* consumes fname! */ | |
| 799 { | |
| 2823 | 800 #if defined(MSDOS) || defined(MSWIN) |
| 7 | 801 /* |
| 802 * set full pathname for swap file now, because a ":!cd dir" may | |
| 803 * change directory without us knowing it. | |
| 804 */ | |
| 805 mf_fullname(mfp); | |
| 806 #endif | |
| 2267 | 807 ml_upd_block0(buf, UB_SAME_DIR); |
| 39 | 808 |
| 7 | 809 /* Flush block zero, so others can read it */ |
| 810 if (mf_sync(mfp, MFS_ZERO) == OK) | |
| 630 | 811 { |
| 812 /* Mark all blocks that should be in the swapfile as dirty. | |
| 813 * Needed for when the 'swapfile' option was reset, so that | |
| 814 * the swap file was deleted, and then on again. */ | |
| 815 mf_set_dirty(mfp); | |
| 7 | 816 break; |
| 630 | 817 } |
| 7 | 818 /* Writing block 0 failed: close the file and try another dir */ |
| 819 mf_close_file(buf, FALSE); | |
| 820 } | |
| 821 } | |
| 822 | |
| 823 if (mfp->mf_fname == NULL) /* Failed! */ | |
| 824 { | |
| 825 need_wait_return = TRUE; /* call wait_return later */ | |
| 826 ++no_wait_return; | |
| 827 (void)EMSG2(_("E303: Unable to open swap file for \"%s\", recovery impossible"), | |
| 3839 | 828 buf_spname(buf) != NULL ? buf_spname(buf) : buf->b_fname); |
| 7 | 829 --no_wait_return; |
| 830 } | |
| 831 | |
| 832 /* don't try to open a swap file again */ | |
| 833 buf->b_may_swap = FALSE; | |
| 834 } | |
| 835 | |
| 836 /* | |
| 837 * If still need to create a swap file, and starting to edit a not-readonly | |
| 838 * file, or reading into an existing buffer, create a swap file now. | |
| 839 */ | |
| 840 void | |
|
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841 check_need_swap( |
|
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842 int newfile) /* reading file into new buffer */ |
| 7 | 843 { |
| 844 if (curbuf->b_may_swap && (!curbuf->b_p_ro || !newfile)) | |
| 845 ml_open_file(curbuf); | |
| 846 } | |
| 847 | |
| 848 /* | |
| 849 * Close memline for buffer 'buf'. | |
| 850 * If 'del_file' is TRUE, delete the swap file | |
| 851 */ | |
| 852 void | |
|
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853 ml_close(buf_T *buf, int del_file) |
| 7 | 854 { |
| 855 if (buf->b_ml.ml_mfp == NULL) /* not open */ | |
| 856 return; | |
| 857 mf_close(buf->b_ml.ml_mfp, del_file); /* close the .swp file */ | |
| 858 if (buf->b_ml.ml_line_lnum != 0 && (buf->b_ml.ml_flags & ML_LINE_DIRTY)) | |
| 859 vim_free(buf->b_ml.ml_line_ptr); | |
| 860 vim_free(buf->b_ml.ml_stack); | |
| 861 #ifdef FEAT_BYTEOFF | |
| 862 vim_free(buf->b_ml.ml_chunksize); | |
| 863 buf->b_ml.ml_chunksize = NULL; | |
| 864 #endif | |
| 865 buf->b_ml.ml_mfp = NULL; | |
| 866 | |
| 867 /* Reset the "recovered" flag, give the ATTENTION prompt the next time | |
| 868 * this buffer is loaded. */ | |
| 869 buf->b_flags &= ~BF_RECOVERED; | |
| 870 } | |
| 871 | |
| 872 /* | |
| 873 * Close all existing memlines and memfiles. | |
| 874 * Only used when exiting. | |
| 875 * When 'del_file' is TRUE, delete the memfiles. | |
| 165 | 876 * But don't delete files that were ":preserve"d when we are POSIX compatible. |
| 7 | 877 */ |
| 878 void | |
|
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879 ml_close_all(int del_file) |
| 7 | 880 { |
| 881 buf_T *buf; | |
| 882 | |
| 883 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
| 165 | 884 ml_close(buf, del_file && ((buf->b_flags & BF_PRESERVED) == 0 |
| 885 || vim_strchr(p_cpo, CPO_PRESERVE) == NULL)); | |
| 5519 | 886 #ifdef FEAT_SPELL |
| 887 spell_delete_wordlist(); /* delete the internal wordlist */ | |
| 888 #endif | |
| 7 | 889 #ifdef TEMPDIRNAMES |
| 5519 | 890 vim_deltempdir(); /* delete created temp directory */ |
| 7 | 891 #endif |
| 892 } | |
| 893 | |
| 894 /* | |
| 895 * Close all memfiles for not modified buffers. | |
| 896 * Only use just before exiting! | |
| 897 */ | |
| 898 void | |
|
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899 ml_close_notmod(void) |
| 7 | 900 { |
| 901 buf_T *buf; | |
| 902 | |
| 903 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
| 904 if (!bufIsChanged(buf)) | |
| 905 ml_close(buf, TRUE); /* close all not-modified buffers */ | |
| 906 } | |
| 907 | |
| 908 /* | |
| 909 * Update the timestamp in the .swp file. | |
| 910 * Used when the file has been written. | |
| 911 */ | |
| 912 void | |
|
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913 ml_timestamp(buf_T *buf) |
| 7 | 914 { |
| 2267 | 915 ml_upd_block0(buf, UB_FNAME); |
| 916 } | |
| 917 | |
| 918 /* | |
| 919 * Return FAIL when the ID of "b0p" is wrong. | |
| 920 */ | |
| 921 static int | |
|
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922 ml_check_b0_id(ZERO_BL *b0p) |
| 2267 | 923 { |
| 924 if (b0p->b0_id[0] != BLOCK0_ID0 | |
| 925 || (b0p->b0_id[1] != BLOCK0_ID1 | |
| 926 && b0p->b0_id[1] != BLOCK0_ID1_C0 | |
| 6122 | 927 && b0p->b0_id[1] != BLOCK0_ID1_C1 |
| 928 && b0p->b0_id[1] != BLOCK0_ID1_C2) | |
| 2267 | 929 ) |
| 930 return FAIL; | |
| 931 return OK; | |
| 39 | 932 } |
| 933 | |
| 934 /* | |
| 935 * Update the timestamp or the B0_SAME_DIR flag of the .swp file. | |
| 936 */ | |
| 937 static void | |
|
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938 ml_upd_block0(buf_T *buf, upd_block0_T what) |
| 39 | 939 { |
| 7 | 940 memfile_T *mfp; |
| 941 bhdr_T *hp; | |
| 942 ZERO_BL *b0p; | |
| 943 | |
| 944 mfp = buf->b_ml.ml_mfp; | |
| 6130 | 945 if (mfp == NULL) |
| 7 | 946 return; |
| 6130 | 947 hp = mf_get(mfp, (blocknr_T)0, 1); |
| 948 if (hp == NULL) | |
| 949 { | |
| 950 #ifdef FEAT_CRYPT | |
| 951 /* Possibly update the seed in the memfile before there is a block0. */ | |
| 952 if (what == UB_CRYPT) | |
| 953 ml_set_mfp_crypt(buf); | |
| 954 #endif | |
| 955 return; | |
| 956 } | |
| 957 | |
| 7 | 958 b0p = (ZERO_BL *)(hp->bh_data); |
| 2267 | 959 if (ml_check_b0_id(b0p) == FAIL) |
| 39 | 960 EMSG(_("E304: ml_upd_block0(): Didn't get block 0??")); |
| 7 | 961 else |
| 39 | 962 { |
| 2267 | 963 if (what == UB_FNAME) |
| 39 | 964 set_b0_fname(b0p, buf); |
| 2267 | 965 #ifdef FEAT_CRYPT |
| 966 else if (what == UB_CRYPT) | |
| 967 ml_set_b0_crypt(buf, b0p); | |
| 968 #endif | |
| 969 else /* what == UB_SAME_DIR */ | |
| 39 | 970 set_b0_dir_flag(b0p, buf); |
| 971 } | |
| 7 | 972 mf_put(mfp, hp, TRUE, FALSE); |
| 973 } | |
| 974 | |
| 975 /* | |
| 976 * Write file name and timestamp into block 0 of a swap file. | |
| 977 * Also set buf->b_mtime. | |
| 978 * Don't use NameBuff[]!!! | |
| 979 */ | |
| 980 static void | |
|
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981 set_b0_fname(ZERO_BL *b0p, buf_T *buf) |
| 7 | 982 { |
| 983 struct stat st; | |
| 984 | |
| 985 if (buf->b_ffname == NULL) | |
| 986 b0p->b0_fname[0] = NUL; | |
| 987 else | |
| 988 { | |
| 2823 | 989 #if defined(MSDOS) || defined(MSWIN) || defined(AMIGA) |
| 39 | 990 /* Systems that cannot translate "~user" back into a path: copy the |
| 991 * file name unmodified. Do use slashes instead of backslashes for | |
| 992 * portability. */ | |
| 2267 | 993 vim_strncpy(b0p->b0_fname, buf->b_ffname, B0_FNAME_SIZE_CRYPT - 1); |
| 39 | 994 # ifdef BACKSLASH_IN_FILENAME |
| 995 forward_slash(b0p->b0_fname); | |
| 996 # endif | |
| 7 | 997 #else |
| 998 size_t flen, ulen; | |
| 999 char_u uname[B0_UNAME_SIZE]; | |
| 1000 | |
| 1001 /* | |
| 1002 * For a file under the home directory of the current user, we try to | |
| 1003 * replace the home directory path with "~user". This helps when | |
| 1004 * editing the same file on different machines over a network. | |
| 1005 * First replace home dir path with "~/" with home_replace(). | |
| 1006 * Then insert the user name to get "~user/". | |
| 1007 */ | |
| 2267 | 1008 home_replace(NULL, buf->b_ffname, b0p->b0_fname, |
| 1009 B0_FNAME_SIZE_CRYPT, TRUE); | |
| 7 | 1010 if (b0p->b0_fname[0] == '~') |
| 1011 { | |
| 1012 flen = STRLEN(b0p->b0_fname); | |
| 1013 /* If there is no user name or it is too long, don't use "~/" */ | |
| 1014 if (get_user_name(uname, B0_UNAME_SIZE) == FAIL | |
| 2267 | 1015 || (ulen = STRLEN(uname)) + flen > B0_FNAME_SIZE_CRYPT - 1) |
| 1016 vim_strncpy(b0p->b0_fname, buf->b_ffname, | |
| 1017 B0_FNAME_SIZE_CRYPT - 1); | |
| 7 | 1018 else |
| 1019 { | |
| 1020 mch_memmove(b0p->b0_fname + ulen + 1, b0p->b0_fname + 1, flen); | |
| 1021 mch_memmove(b0p->b0_fname + 1, uname, ulen); | |
| 1022 } | |
| 1023 } | |
| 1024 #endif | |
| 1025 if (mch_stat((char *)buf->b_ffname, &st) >= 0) | |
| 1026 { | |
| 1027 long_to_char((long)st.st_mtime, b0p->b0_mtime); | |
| 1028 #ifdef CHECK_INODE | |
| 1029 long_to_char((long)st.st_ino, b0p->b0_ino); | |
| 1030 #endif | |
| 1031 buf_store_time(buf, &st, buf->b_ffname); | |
| 1032 buf->b_mtime_read = buf->b_mtime; | |
| 1033 } | |
| 1034 else | |
| 1035 { | |
| 1036 long_to_char(0L, b0p->b0_mtime); | |
| 1037 #ifdef CHECK_INODE | |
| 1038 long_to_char(0L, b0p->b0_ino); | |
| 1039 #endif | |
| 1040 buf->b_mtime = 0; | |
| 1041 buf->b_mtime_read = 0; | |
| 1042 buf->b_orig_size = 0; | |
| 1043 buf->b_orig_mode = 0; | |
| 1044 } | |
| 1045 } | |
| 39 | 1046 |
| 1047 #ifdef FEAT_MBYTE | |
| 1048 /* Also add the 'fileencoding' if there is room. */ | |
| 1049 add_b0_fenc(b0p, curbuf); | |
| 1050 #endif | |
| 7 | 1051 } |
| 1052 | |
| 1053 /* | |
| 39 | 1054 * Update the B0_SAME_DIR flag of the swap file. It's set if the file and the |
| 1055 * swapfile for "buf" are in the same directory. | |
| 1056 * This is fail safe: if we are not sure the directories are equal the flag is | |
| 1057 * not set. | |
| 1058 */ | |
| 1059 static void | |
|
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1060 set_b0_dir_flag(ZERO_BL *b0p, buf_T *buf) |
| 39 | 1061 { |
| 1062 if (same_directory(buf->b_ml.ml_mfp->mf_fname, buf->b_ffname)) | |
| 1063 b0p->b0_flags |= B0_SAME_DIR; | |
| 1064 else | |
| 1065 b0p->b0_flags &= ~B0_SAME_DIR; | |
| 1066 } | |
| 1067 | |
| 1068 #ifdef FEAT_MBYTE | |
| 1069 /* | |
| 1070 * When there is room, add the 'fileencoding' to block zero. | |
| 1071 */ | |
| 1072 static void | |
|
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1073 add_b0_fenc( |
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1074 ZERO_BL *b0p, |
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1075 buf_T *buf) |
| 39 | 1076 { |
| 1077 int n; | |
| 2267 | 1078 int size = B0_FNAME_SIZE_NOCRYPT; |
| 1079 | |
| 1080 # ifdef FEAT_CRYPT | |
| 1081 /* Without encryption use the same offset as in Vim 7.2 to be compatible. | |
| 1082 * With encryption it's OK to move elsewhere, the swap file is not | |
| 1083 * compatible anyway. */ | |
| 1084 if (*buf->b_p_key != NUL) | |
| 1085 size = B0_FNAME_SIZE_CRYPT; | |
| 1086 # endif | |
| 39 | 1087 |
| 835 | 1088 n = (int)STRLEN(buf->b_p_fenc); |
| 2267 | 1089 if ((int)STRLEN(b0p->b0_fname) + n + 1 > size) |
| 39 | 1090 b0p->b0_flags &= ~B0_HAS_FENC; |
| 1091 else | |
| 1092 { | |
| 2267 | 1093 mch_memmove((char *)b0p->b0_fname + size - n, |
| 39 | 1094 (char *)buf->b_p_fenc, (size_t)n); |
| 2267 | 1095 *(b0p->b0_fname + size - n - 1) = NUL; |
| 39 | 1096 b0p->b0_flags |= B0_HAS_FENC; |
| 1097 } | |
| 1098 } | |
| 1099 #endif | |
| 1100 | |
| 1101 | |
| 1102 /* | |
| 2267 | 1103 * Try to recover curbuf from the .swp file. |
| 7 | 1104 */ |
| 1105 void | |
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1106 ml_recover(void) |
| 7 | 1107 { |
| 1108 buf_T *buf = NULL; | |
| 1109 memfile_T *mfp = NULL; | |
| 1110 char_u *fname; | |
| 2267 | 1111 char_u *fname_used = NULL; |
| 7 | 1112 bhdr_T *hp = NULL; |
| 1113 ZERO_BL *b0p; | |
| 39 | 1114 int b0_ff; |
| 1115 char_u *b0_fenc = NULL; | |
| 2267 | 1116 #ifdef FEAT_CRYPT |
| 1117 int b0_cm = -1; | |
| 1118 #endif | |
| 7 | 1119 PTR_BL *pp; |
| 1120 DATA_BL *dp; | |
| 1121 infoptr_T *ip; | |
| 1122 blocknr_T bnum; | |
| 1123 int page_count; | |
| 1124 struct stat org_stat, swp_stat; | |
| 1125 int len; | |
| 1126 int directly; | |
| 1127 linenr_T lnum; | |
| 1128 char_u *p; | |
| 1129 int i; | |
| 1130 long error; | |
| 1131 int cannot_open; | |
| 1132 linenr_T line_count; | |
| 1133 int has_error; | |
| 1134 int idx; | |
| 1135 int top; | |
| 1136 int txt_start; | |
| 1137 off_t size; | |
| 1138 int called_from_main; | |
| 1139 int serious_error = TRUE; | |
| 1140 long mtime; | |
| 1141 int attr; | |
|
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1142 int orig_file_status = NOTDONE; |
| 7 | 1143 |
| 1144 recoverymode = TRUE; | |
| 1145 called_from_main = (curbuf->b_ml.ml_mfp == NULL); | |
| 1146 attr = hl_attr(HLF_E); | |
| 1975 | 1147 |
| 1148 /* | |
| 1149 * If the file name ends in ".s[uvw][a-z]" we assume this is the swap file. | |
| 1150 * Otherwise a search is done to find the swap file(s). | |
| 1151 */ | |
| 7 | 1152 fname = curbuf->b_fname; |
| 1153 if (fname == NULL) /* When there is no file name */ | |
| 1154 fname = (char_u *)""; | |
| 1155 len = (int)STRLEN(fname); | |
| 1156 if (len >= 4 && | |
| 2823 | 1157 #if defined(VMS) |
| 1975 | 1158 STRNICMP(fname + len - 4, "_s" , 2) |
| 7 | 1159 #else |
| 1975 | 1160 STRNICMP(fname + len - 4, ".s" , 2) |
| 7 | 1161 #endif |
| 1975 | 1162 == 0 |
| 1163 && vim_strchr((char_u *)"UVWuvw", fname[len - 2]) != NULL | |
| 1164 && ASCII_ISALPHA(fname[len - 1])) | |
| 7 | 1165 { |
| 1166 directly = TRUE; | |
| 2267 | 1167 fname_used = vim_strsave(fname); /* make a copy for mf_open() */ |
| 7 | 1168 } |
| 1169 else | |
| 1170 { | |
| 1171 directly = FALSE; | |
| 1172 | |
| 1173 /* count the number of matching swap files */ | |
| 2267 | 1174 len = recover_names(fname, FALSE, 0, NULL); |
| 7 | 1175 if (len == 0) /* no swap files found */ |
| 1176 { | |
| 1177 EMSG2(_("E305: No swap file found for %s"), fname); | |
| 1178 goto theend; | |
| 1179 } | |
| 1180 if (len == 1) /* one swap file found, use it */ | |
| 1181 i = 1; | |
| 1182 else /* several swap files found, choose */ | |
| 1183 { | |
| 1184 /* list the names of the swap files */ | |
| 2267 | 1185 (void)recover_names(fname, TRUE, 0, NULL); |
| 7 | 1186 msg_putchar('\n'); |
| 1187 MSG_PUTS(_("Enter number of swap file to use (0 to quit): ")); | |
| 374 | 1188 i = get_number(FALSE, NULL); |
| 7 | 1189 if (i < 1 || i > len) |
| 1190 goto theend; | |
| 1191 } | |
| 1192 /* get the swap file name that will be used */ | |
| 2267 | 1193 (void)recover_names(fname, FALSE, i, &fname_used); |
| 7 | 1194 } |
| 2267 | 1195 if (fname_used == NULL) |
| 7 | 1196 goto theend; /* out of memory */ |
| 1197 | |
| 1198 /* When called from main() still need to initialize storage structure */ | |
| 625 | 1199 if (called_from_main && ml_open(curbuf) == FAIL) |
| 7 | 1200 getout(1); |
| 1201 | |
| 2267 | 1202 /* |
| 1203 * Allocate a buffer structure for the swap file that is used for recovery. | |
|
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1204 * Only the memline and crypt information in it are really used. |
| 2267 | 1205 */ |
| 7 | 1206 buf = (buf_T *)alloc((unsigned)sizeof(buf_T)); |
| 1207 if (buf == NULL) | |
| 1208 goto theend; | |
| 2267 | 1209 |
| 1210 /* | |
| 1211 * init fields in memline struct | |
| 1212 */ | |
| 7 | 1213 buf->b_ml.ml_stack_size = 0; /* no stack yet */ |
| 1214 buf->b_ml.ml_stack = NULL; /* no stack yet */ | |
| 1215 buf->b_ml.ml_stack_top = 0; /* nothing in the stack */ | |
| 1216 buf->b_ml.ml_line_lnum = 0; /* no cached line */ | |
| 1217 buf->b_ml.ml_locked = NULL; /* no locked block */ | |
| 1218 buf->b_ml.ml_flags = 0; | |
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1219 #ifdef FEAT_CRYPT |
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1220 buf->b_p_key = empty_option; |
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1221 buf->b_p_cm = empty_option; |
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1222 #endif |
| 7 | 1223 |
| 2267 | 1224 /* |
| 1225 * open the memfile from the old swap file | |
| 1226 */ | |
| 1227 p = vim_strsave(fname_used); /* save "fname_used" for the message: | |
| 1228 mf_open() will consume "fname_used"! */ | |
| 1229 mfp = mf_open(fname_used, O_RDONLY); | |
| 1230 fname_used = p; | |
| 7 | 1231 if (mfp == NULL || mfp->mf_fd < 0) |
| 1232 { | |
| 2267 | 1233 if (fname_used != NULL) |
| 1234 EMSG2(_("E306: Cannot open %s"), fname_used); | |
| 7 | 1235 goto theend; |
| 1236 } | |
| 1237 buf->b_ml.ml_mfp = mfp; | |
| 2267 | 1238 #ifdef FEAT_CRYPT |
| 1239 mfp->mf_buffer = buf; | |
| 1240 #endif | |
| 7 | 1241 |
| 1242 /* | |
| 1243 * The page size set in mf_open() might be different from the page size | |
| 1244 * used in the swap file, we must get it from block 0. But to read block | |
| 1245 * 0 we need a page size. Use the minimal size for block 0 here, it will | |
| 1246 * be set to the real value below. | |
| 1247 */ | |
| 1248 mfp->mf_page_size = MIN_SWAP_PAGE_SIZE; | |
| 1249 | |
| 2267 | 1250 /* |
| 1251 * try to read block 0 | |
| 1252 */ | |
| 7 | 1253 if ((hp = mf_get(mfp, (blocknr_T)0, 1)) == NULL) |
| 1254 { | |
| 1255 msg_start(); | |
| 1256 MSG_PUTS_ATTR(_("Unable to read block 0 from "), attr | MSG_HIST); | |
| 1257 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST); | |
| 2267 | 1258 MSG_PUTS_ATTR(_("\nMaybe no changes were made or Vim did not update the swap file."), |
| 7 | 1259 attr | MSG_HIST); |
| 1260 msg_end(); | |
| 1261 goto theend; | |
| 1262 } | |
| 1263 b0p = (ZERO_BL *)(hp->bh_data); | |
| 1264 if (STRNCMP(b0p->b0_version, "VIM 3.0", 7) == 0) | |
| 1265 { | |
| 1266 msg_start(); | |
| 1267 msg_outtrans_attr(mfp->mf_fname, MSG_HIST); | |
| 1268 MSG_PUTS_ATTR(_(" cannot be used with this version of Vim.\n"), | |
| 1269 MSG_HIST); | |
| 1270 MSG_PUTS_ATTR(_("Use Vim version 3.0.\n"), MSG_HIST); | |
| 1271 msg_end(); | |
| 1272 goto theend; | |
| 1273 } | |
| 2267 | 1274 if (ml_check_b0_id(b0p) == FAIL) |
| 7 | 1275 { |
| 1276 EMSG2(_("E307: %s does not look like a Vim swap file"), mfp->mf_fname); | |
| 1277 goto theend; | |
| 1278 } | |
| 1279 if (b0_magic_wrong(b0p)) | |
| 1280 { | |
| 1281 msg_start(); | |
| 1282 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST); | |
| 1283 #if defined(MSDOS) || defined(MSWIN) | |
| 1284 if (STRNCMP(b0p->b0_hname, "PC ", 3) == 0) | |
| 1285 MSG_PUTS_ATTR(_(" cannot be used with this version of Vim.\n"), | |
| 1286 attr | MSG_HIST); | |
| 1287 else | |
| 1288 #endif | |
| 1289 MSG_PUTS_ATTR(_(" cannot be used on this computer.\n"), | |
| 1290 attr | MSG_HIST); | |
| 1291 MSG_PUTS_ATTR(_("The file was created on "), attr | MSG_HIST); | |
|
2273
7f09ce7b4126
Fix a memory leak in encryption. (Dominique Pelle)
Bram Moolenaar <bram@vim.org>
parents:
2272
diff
changeset
|
1292 /* avoid going past the end of a corrupted hostname */ |
| 7 | 1293 b0p->b0_fname[0] = NUL; |
| 1294 MSG_PUTS_ATTR(b0p->b0_hname, attr | MSG_HIST); | |
| 1295 MSG_PUTS_ATTR(_(",\nor the file has been damaged."), attr | MSG_HIST); | |
| 1296 msg_end(); | |
| 1297 goto theend; | |
| 1298 } | |
| 1105 | 1299 |
| 2267 | 1300 #ifdef FEAT_CRYPT |
| 6122 | 1301 for (i = 0; i < (int)(sizeof(id1_codes) / sizeof(int)); ++i) |
| 1302 if (id1_codes[i] == b0p->b0_id[1]) | |
| 1303 b0_cm = i; | |
| 1304 if (b0_cm > 0) | |
| 2267 | 1305 mch_memmove(mfp->mf_seed, &b0p->b0_seed, MF_SEED_LEN); |
| 6122 | 1306 crypt_set_cm_option(buf, b0_cm < 0 ? 0 : b0_cm); |
| 2267 | 1307 #else |
| 1308 if (b0p->b0_id[1] != BLOCK0_ID1) | |
| 1309 { | |
|
2283
7e1bd501306d
Mainly documentation updates.
Bram Moolenaar <bram@vim.org>
parents:
2273
diff
changeset
|
1310 EMSG2(_("E833: %s is encrypted and this version of Vim does not support encryption"), mfp->mf_fname); |
| 2267 | 1311 goto theend; |
| 1312 } | |
| 1313 #endif | |
| 1314 | |
| 7 | 1315 /* |
| 1316 * If we guessed the wrong page size, we have to recalculate the | |
| 1317 * highest block number in the file. | |
| 1318 */ | |
| 1319 if (mfp->mf_page_size != (unsigned)char_to_long(b0p->b0_page_size)) | |
| 1320 { | |
| 1105 | 1321 unsigned previous_page_size = mfp->mf_page_size; |
| 1322 | |
| 7 | 1323 mf_new_page_size(mfp, (unsigned)char_to_long(b0p->b0_page_size)); |
| 1105 | 1324 if (mfp->mf_page_size < previous_page_size) |
| 1325 { | |
| 1326 msg_start(); | |
| 1327 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST); | |
| 1328 MSG_PUTS_ATTR(_(" has been damaged (page size is smaller than minimum value).\n"), | |
| 1329 attr | MSG_HIST); | |
| 1330 msg_end(); | |
| 1331 goto theend; | |
| 1332 } | |
| 7 | 1333 if ((size = lseek(mfp->mf_fd, (off_t)0L, SEEK_END)) <= 0) |
| 1334 mfp->mf_blocknr_max = 0; /* no file or empty file */ | |
| 1335 else | |
| 1336 mfp->mf_blocknr_max = (blocknr_T)(size / mfp->mf_page_size); | |
| 1337 mfp->mf_infile_count = mfp->mf_blocknr_max; | |
| 1105 | 1338 |
| 1339 /* need to reallocate the memory used to store the data */ | |
| 1340 p = alloc(mfp->mf_page_size); | |
| 1341 if (p == NULL) | |
| 1342 goto theend; | |
| 1343 mch_memmove(p, hp->bh_data, previous_page_size); | |
| 1344 vim_free(hp->bh_data); | |
| 1345 hp->bh_data = p; | |
| 1346 b0p = (ZERO_BL *)(hp->bh_data); | |
| 7 | 1347 } |
| 1348 | |
| 2267 | 1349 /* |
| 1350 * If .swp file name given directly, use name from swap file for buffer. | |
| 1351 */ | |
| 7 | 1352 if (directly) |
| 1353 { | |
| 1354 expand_env(b0p->b0_fname, NameBuff, MAXPATHL); | |
| 1355 if (setfname(curbuf, NameBuff, NULL, TRUE) == FAIL) | |
| 1356 goto theend; | |
| 1357 } | |
| 1358 | |
| 1359 home_replace(NULL, mfp->mf_fname, NameBuff, MAXPATHL, TRUE); | |
| 274 | 1360 smsg((char_u *)_("Using swap file \"%s\""), NameBuff); |
| 7 | 1361 |
| 1362 if (buf_spname(curbuf) != NULL) | |
| 3839 | 1363 vim_strncpy(NameBuff, buf_spname(curbuf), MAXPATHL - 1); |
| 7 | 1364 else |
| 1365 home_replace(NULL, curbuf->b_ffname, NameBuff, MAXPATHL, TRUE); | |
| 274 | 1366 smsg((char_u *)_("Original file \"%s\""), NameBuff); |
| 7 | 1367 msg_putchar('\n'); |
| 1368 | |
| 2267 | 1369 /* |
| 1370 * check date of swap file and original file | |
| 1371 */ | |
| 7 | 1372 mtime = char_to_long(b0p->b0_mtime); |
| 1373 if (curbuf->b_ffname != NULL | |
| 1374 && mch_stat((char *)curbuf->b_ffname, &org_stat) != -1 | |
| 1375 && ((mch_stat((char *)mfp->mf_fname, &swp_stat) != -1 | |
| 1376 && org_stat.st_mtime > swp_stat.st_mtime) | |
| 1377 || org_stat.st_mtime != mtime)) | |
| 1378 { | |
| 1379 EMSG(_("E308: Warning: Original file may have been changed")); | |
| 1380 } | |
| 1381 out_flush(); | |
| 39 | 1382 |
| 1383 /* Get the 'fileformat' and 'fileencoding' from block zero. */ | |
| 1384 b0_ff = (b0p->b0_flags & B0_FF_MASK); | |
| 1385 if (b0p->b0_flags & B0_HAS_FENC) | |
| 1386 { | |
|
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2267
diff
changeset
|
1387 int fnsize = B0_FNAME_SIZE_NOCRYPT; |
| 2267 | 1388 |
| 1389 #ifdef FEAT_CRYPT | |
| 1390 /* Use the same size as in add_b0_fenc(). */ | |
| 1391 if (b0p->b0_id[1] != BLOCK0_ID1) | |
|
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2267
diff
changeset
|
1392 fnsize = B0_FNAME_SIZE_CRYPT; |
| 2267 | 1393 #endif |
|
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2267
diff
changeset
|
1394 for (p = b0p->b0_fname + fnsize; p > b0p->b0_fname && p[-1] != NUL; --p) |
| 39 | 1395 ; |
|
2271
2b33a7678e7b
Fix compiler warnings for shadowed variables. Make 'conceal' a long instead
Bram Moolenaar <bram@vim.org>
parents:
2267
diff
changeset
|
1396 b0_fenc = vim_strnsave(p, (int)(b0p->b0_fname + fnsize - p)); |
| 39 | 1397 } |
| 1398 | |
| 7 | 1399 mf_put(mfp, hp, FALSE, FALSE); /* release block 0 */ |
| 1400 hp = NULL; | |
| 1401 | |
| 1402 /* | |
| 1403 * Now that we are sure that the file is going to be recovered, clear the | |
| 1404 * contents of the current buffer. | |
| 1405 */ | |
| 1406 while (!(curbuf->b_ml.ml_flags & ML_EMPTY)) | |
| 1407 ml_delete((linenr_T)1, FALSE); | |
| 1408 | |
| 1409 /* | |
| 1410 * Try reading the original file to obtain the values of 'fileformat', | |
| 1411 * 'fileencoding', etc. Ignore errors. The text itself is not used. | |
| 2267 | 1412 * When the file is encrypted the user is asked to enter the key. |
| 7 | 1413 */ |
| 1414 if (curbuf->b_ffname != NULL) | |
|
2162
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1415 orig_file_status = readfile(curbuf->b_ffname, NULL, (linenr_T)0, |
| 7 | 1416 (linenr_T)0, (linenr_T)MAXLNUM, NULL, READ_NEW); |
| 1417 | |
| 2267 | 1418 #ifdef FEAT_CRYPT |
| 1419 if (b0_cm >= 0) | |
| 1420 { | |
| 1421 /* Need to ask the user for the crypt key. If this fails we continue | |
| 1422 * without a key, will probably get garbage text. */ | |
| 1423 if (*curbuf->b_p_key != NUL) | |
| 1424 { | |
| 1425 smsg((char_u *)_("Swap file is encrypted: \"%s\""), fname_used); | |
| 1426 MSG_PUTS(_("\nIf you entered a new crypt key but did not write the text file,")); | |
| 1427 MSG_PUTS(_("\nenter the new crypt key.")); | |
| 1428 MSG_PUTS(_("\nIf you wrote the text file after changing the crypt key press enter")); | |
| 1429 MSG_PUTS(_("\nto use the same key for text file and swap file")); | |
| 1430 } | |
| 1431 else | |
| 1432 smsg((char_u *)_(need_key_msg), fname_used); | |
| 6122 | 1433 buf->b_p_key = crypt_get_key(FALSE, FALSE); |
| 2267 | 1434 if (buf->b_p_key == NULL) |
| 1435 buf->b_p_key = curbuf->b_p_key; | |
| 1436 else if (*buf->b_p_key == NUL) | |
| 1437 { | |
| 1438 vim_free(buf->b_p_key); | |
| 1439 buf->b_p_key = curbuf->b_p_key; | |
| 1440 } | |
| 1441 if (buf->b_p_key == NULL) | |
| 1442 buf->b_p_key = empty_option; | |
|
2165
733f0dc510c3
Undo changes that are meant for the Vim 7.3 branch.
Bram Moolenaar <bram@vim.org>
parents:
2162
diff
changeset
|
1443 } |
| 2267 | 1444 #endif |
| 7 | 1445 |
| 39 | 1446 /* Use the 'fileformat' and 'fileencoding' as stored in the swap file. */ |
| 1447 if (b0_ff != 0) | |
| 1448 set_fileformat(b0_ff - 1, OPT_LOCAL); | |
| 1449 if (b0_fenc != NULL) | |
| 1450 { | |
| 1451 set_option_value((char_u *)"fenc", 0L, b0_fenc, OPT_LOCAL); | |
| 1452 vim_free(b0_fenc); | |
| 1453 } | |
| 1454 unchanged(curbuf, TRUE); | |
| 1455 | |
| 7 | 1456 bnum = 1; /* start with block 1 */ |
| 1457 page_count = 1; /* which is 1 page */ | |
| 1458 lnum = 0; /* append after line 0 in curbuf */ | |
| 1459 line_count = 0; | |
| 1460 idx = 0; /* start with first index in block 1 */ | |
| 1461 error = 0; | |
| 1462 buf->b_ml.ml_stack_top = 0; | |
| 1463 buf->b_ml.ml_stack = NULL; | |
| 1464 buf->b_ml.ml_stack_size = 0; /* no stack yet */ | |
| 1465 | |
| 1466 if (curbuf->b_ffname == NULL) | |
| 1467 cannot_open = TRUE; | |
| 1468 else | |
| 1469 cannot_open = FALSE; | |
| 1470 | |
| 1471 serious_error = FALSE; | |
| 1472 for ( ; !got_int; line_breakcheck()) | |
| 1473 { | |
| 1474 if (hp != NULL) | |
| 1475 mf_put(mfp, hp, FALSE, FALSE); /* release previous block */ | |
| 1476 | |
| 1477 /* | |
| 1478 * get block | |
| 1479 */ | |
| 1480 if ((hp = mf_get(mfp, (blocknr_T)bnum, page_count)) == NULL) | |
| 1481 { | |
| 1482 if (bnum == 1) | |
| 1483 { | |
| 1484 EMSG2(_("E309: Unable to read block 1 from %s"), mfp->mf_fname); | |
| 1485 goto theend; | |
| 1486 } | |
| 1487 ++error; | |
| 1488 ml_append(lnum++, (char_u *)_("???MANY LINES MISSING"), | |
| 1489 (colnr_T)0, TRUE); | |
| 1490 } | |
| 1491 else /* there is a block */ | |
| 1492 { | |
| 1493 pp = (PTR_BL *)(hp->bh_data); | |
| 1494 if (pp->pb_id == PTR_ID) /* it is a pointer block */ | |
| 1495 { | |
| 1496 /* check line count when using pointer block first time */ | |
| 1497 if (idx == 0 && line_count != 0) | |
| 1498 { | |
| 1499 for (i = 0; i < (int)pp->pb_count; ++i) | |
| 1500 line_count -= pp->pb_pointer[i].pe_line_count; | |
| 1501 if (line_count != 0) | |
| 1502 { | |
| 1503 ++error; | |
| 1504 ml_append(lnum++, (char_u *)_("???LINE COUNT WRONG"), | |
| 1505 (colnr_T)0, TRUE); | |
| 1506 } | |
| 1507 } | |
| 1508 | |
| 1509 if (pp->pb_count == 0) | |
| 1510 { | |
| 1511 ml_append(lnum++, (char_u *)_("???EMPTY BLOCK"), | |
| 1512 (colnr_T)0, TRUE); | |
| 1513 ++error; | |
| 1514 } | |
| 1515 else if (idx < (int)pp->pb_count) /* go a block deeper */ | |
| 1516 { | |
| 1517 if (pp->pb_pointer[idx].pe_bnum < 0) | |
| 1518 { | |
| 1519 /* | |
| 1520 * Data block with negative block number. | |
| 1521 * Try to read lines from the original file. | |
| 1522 * This is slow, but it works. | |
| 1523 */ | |
| 1524 if (!cannot_open) | |
| 1525 { | |
| 1526 line_count = pp->pb_pointer[idx].pe_line_count; | |
| 1527 if (readfile(curbuf->b_ffname, NULL, lnum, | |
| 1528 pp->pb_pointer[idx].pe_old_lnum - 1, | |
| 1529 line_count, NULL, 0) == FAIL) | |
| 1530 cannot_open = TRUE; | |
| 1531 else | |
| 1532 lnum += line_count; | |
| 1533 } | |
| 1534 if (cannot_open) | |
| 1535 { | |
| 1536 ++error; | |
| 1537 ml_append(lnum++, (char_u *)_("???LINES MISSING"), | |
| 1538 (colnr_T)0, TRUE); | |
| 1539 } | |
| 1540 ++idx; /* get same block again for next index */ | |
| 1541 continue; | |
| 1542 } | |
| 1543 | |
| 1544 /* | |
| 1545 * going one block deeper in the tree | |
| 1546 */ | |
| 1547 if ((top = ml_add_stack(buf)) < 0) /* new entry in stack */ | |
| 1548 { | |
| 1549 ++error; | |
| 1550 break; /* out of memory */ | |
| 1551 } | |
| 1552 ip = &(buf->b_ml.ml_stack[top]); | |
| 1553 ip->ip_bnum = bnum; | |
| 1554 ip->ip_index = idx; | |
| 1555 | |
| 1556 bnum = pp->pb_pointer[idx].pe_bnum; | |
| 1557 line_count = pp->pb_pointer[idx].pe_line_count; | |
| 1558 page_count = pp->pb_pointer[idx].pe_page_count; | |
| 2885 | 1559 idx = 0; |
| 7 | 1560 continue; |
| 1561 } | |
| 1562 } | |
| 1563 else /* not a pointer block */ | |
| 1564 { | |
| 1565 dp = (DATA_BL *)(hp->bh_data); | |
| 1566 if (dp->db_id != DATA_ID) /* block id wrong */ | |
| 1567 { | |
| 1568 if (bnum == 1) | |
| 1569 { | |
| 1570 EMSG2(_("E310: Block 1 ID wrong (%s not a .swp file?)"), | |
| 1571 mfp->mf_fname); | |
| 1572 goto theend; | |
| 1573 } | |
| 1574 ++error; | |
| 1575 ml_append(lnum++, (char_u *)_("???BLOCK MISSING"), | |
| 1576 (colnr_T)0, TRUE); | |
| 1577 } | |
| 1578 else | |
| 1579 { | |
| 1580 /* | |
| 1581 * it is a data block | |
| 1582 * Append all the lines in this block | |
| 1583 */ | |
| 1584 has_error = FALSE; | |
| 1585 /* | |
| 1586 * check length of block | |
| 1587 * if wrong, use length in pointer block | |
| 1588 */ | |
| 1589 if (page_count * mfp->mf_page_size != dp->db_txt_end) | |
| 1590 { | |
| 1591 ml_append(lnum++, (char_u *)_("??? from here until ???END lines may be messed up"), | |
| 1592 (colnr_T)0, TRUE); | |
| 1593 ++error; | |
| 1594 has_error = TRUE; | |
| 1595 dp->db_txt_end = page_count * mfp->mf_page_size; | |
| 1596 } | |
| 1597 | |
| 1598 /* make sure there is a NUL at the end of the block */ | |
| 1599 *((char_u *)dp + dp->db_txt_end - 1) = NUL; | |
| 1600 | |
| 1601 /* | |
| 1602 * check number of lines in block | |
| 1603 * if wrong, use count in data block | |
| 1604 */ | |
| 1605 if (line_count != dp->db_line_count) | |
| 1606 { | |
| 1607 ml_append(lnum++, (char_u *)_("??? from here until ???END lines may have been inserted/deleted"), | |
| 1608 (colnr_T)0, TRUE); | |
| 1609 ++error; | |
| 1610 has_error = TRUE; | |
| 1611 } | |
| 1612 | |
| 1613 for (i = 0; i < dp->db_line_count; ++i) | |
| 1614 { | |
| 1615 txt_start = (dp->db_index[i] & DB_INDEX_MASK); | |
| 1978 | 1616 if (txt_start <= (int)HEADER_SIZE |
| 7 | 1617 || txt_start >= (int)dp->db_txt_end) |
| 1618 { | |
| 1619 p = (char_u *)"???"; | |
| 1620 ++error; | |
| 1621 } | |
| 1622 else | |
| 1623 p = (char_u *)dp + txt_start; | |
| 1624 ml_append(lnum++, p, (colnr_T)0, TRUE); | |
| 1625 } | |
| 1626 if (has_error) | |
| 1978 | 1627 ml_append(lnum++, (char_u *)_("???END"), |
| 1628 (colnr_T)0, TRUE); | |
| 7 | 1629 } |
| 1630 } | |
| 1631 } | |
| 1632 | |
| 1633 if (buf->b_ml.ml_stack_top == 0) /* finished */ | |
| 1634 break; | |
| 1635 | |
| 1636 /* | |
| 1637 * go one block up in the tree | |
| 1638 */ | |
| 1639 ip = &(buf->b_ml.ml_stack[--(buf->b_ml.ml_stack_top)]); | |
| 1640 bnum = ip->ip_bnum; | |
| 1641 idx = ip->ip_index + 1; /* go to next index */ | |
| 1642 page_count = 1; | |
| 1643 } | |
| 1644 | |
| 1645 /* | |
|
2162
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1646 * Compare the buffer contents with the original file. When they differ |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1647 * set the 'modified' flag. |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1648 * Lines 1 - lnum are the new contents. |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1649 * Lines lnum + 1 to ml_line_count are the original contents. |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1650 * Line ml_line_count + 1 in the dummy empty line. |
| 7 | 1651 */ |
|
2162
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1652 if (orig_file_status != OK || curbuf->b_ml.ml_line_count != lnum * 2 + 1) |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1653 { |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
Bram Moolenaar <bram@vim.org>
parents:
2145
diff
changeset
|
1654 /* Recovering an empty file results in two lines and the first line is |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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diff
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|
1655 * empty. Don't set the modified flag then. */ |
|
0527eb0f6918
After recovery check if the text changed. If it did mark the buffer as
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|
1656 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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|
1657 { |
|
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After recovery check if the text changed. If it did mark the buffer as
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|
1658 changed_int(); |
|
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After recovery check if the text changed. If it did mark the buffer as
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|
1659 ++curbuf->b_changedtick; |
|
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After recovery check if the text changed. If it did mark the buffer as
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|
1660 } |
|
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After recovery check if the text changed. If it did mark the buffer as
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|
1661 } |
|
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After recovery check if the text changed. If it did mark the buffer as
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|
1662 else |
|
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After recovery check if the text changed. If it did mark the buffer as
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|
1663 { |
|
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|
1664 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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|
1665 { |
|
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After recovery check if the text changed. If it did mark the buffer as
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|
1666 /* Need to copy one line, fetching the other one may flush it. */ |
|
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|
1667 p = vim_strsave(ml_get(idx)); |
|
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After recovery check if the text changed. If it did mark the buffer as
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|
1668 i = STRCMP(p, ml_get(idx + lnum)); |
|
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|
1669 vim_free(p); |
|
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|
1670 if (i != 0) |
|
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|
1671 { |
|
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|
1672 changed_int(); |
|
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|
1673 ++curbuf->b_changedtick; |
|
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|
1674 break; |
|
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|
1675 } |
|
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|
1676 } |
|
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|
1677 } |
|
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|
1678 |
|
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|
1679 /* |
|
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1680 * Delete the lines from the original file and the dummy line from the |
|
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|
1681 * empty buffer. These will now be after the last line in the buffer. |
|
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1682 */ |
|
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1683 while (curbuf->b_ml.ml_line_count > lnum |
|
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1684 && !(curbuf->b_ml.ml_flags & ML_EMPTY)) |
|
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1685 ml_delete(curbuf->b_ml.ml_line_count, FALSE); |
| 7 | 1686 curbuf->b_flags |= BF_RECOVERED; |
| 1687 | |
| 1688 recoverymode = FALSE; | |
| 1689 if (got_int) | |
| 1690 EMSG(_("E311: Recovery Interrupted")); | |
| 1691 else if (error) | |
| 1692 { | |
| 1693 ++no_wait_return; | |
| 1694 MSG(">>>>>>>>>>>>>"); | |
| 1695 EMSG(_("E312: Errors detected while recovering; look for lines starting with ???")); | |
| 1696 --no_wait_return; | |
| 1697 MSG(_("See \":help E312\" for more information.")); | |
| 1698 MSG(">>>>>>>>>>>>>"); | |
| 1699 } | |
| 1700 else | |
| 1701 { | |
|
2162
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1702 if (curbuf->b_changed) |
|
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1703 { |
|
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1704 MSG(_("Recovery completed. You should check if everything is OK.")); |
|
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1705 MSG_PUTS(_("\n(You might want to write out this file under another name\n")); |
|
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1706 MSG_PUTS(_("and run diff with the original file to check for changes)")); |
|
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1707 } |
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1708 else |
|
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1709 MSG(_("Recovery completed. Buffer contents equals file contents.")); |
|
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1710 MSG_PUTS(_("\nYou may want to delete the .swp file now.\n\n")); |
| 7 | 1711 cmdline_row = msg_row; |
| 1712 } | |
| 2267 | 1713 #ifdef FEAT_CRYPT |
| 1714 if (*buf->b_p_key != NUL && STRCMP(curbuf->b_p_key, buf->b_p_key) != 0) | |
| 1715 { | |
| 1716 MSG_PUTS(_("Using crypt key from swap file for the text file.\n")); | |
| 1717 set_option_value((char_u *)"key", 0L, buf->b_p_key, OPT_LOCAL); | |
| 1718 } | |
| 1719 #endif | |
| 7 | 1720 redraw_curbuf_later(NOT_VALID); |
| 1721 | |
| 1722 theend: | |
| 2267 | 1723 vim_free(fname_used); |
| 7 | 1724 recoverymode = FALSE; |
| 1725 if (mfp != NULL) | |
| 1726 { | |
| 1727 if (hp != NULL) | |
| 1728 mf_put(mfp, hp, FALSE, FALSE); | |
| 1729 mf_close(mfp, FALSE); /* will also vim_free(mfp->mf_fname) */ | |
| 1730 } | |
| 1053 | 1731 if (buf != NULL) |
| 1732 { | |
| 2267 | 1733 #ifdef FEAT_CRYPT |
| 1734 if (buf->b_p_key != curbuf->b_p_key) | |
| 1735 free_string_option(buf->b_p_key); | |
|
2407
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1736 free_string_option(buf->b_p_cm); |
| 2267 | 1737 #endif |
| 1053 | 1738 vim_free(buf->b_ml.ml_stack); |
| 1739 vim_free(buf); | |
| 1740 } | |
| 7 | 1741 if (serious_error && called_from_main) |
| 1742 ml_close(curbuf, TRUE); | |
| 1743 #ifdef FEAT_AUTOCMD | |
| 1744 else | |
| 1745 { | |
| 1746 apply_autocmds(EVENT_BUFREADPOST, NULL, curbuf->b_fname, FALSE, curbuf); | |
| 1747 apply_autocmds(EVENT_BUFWINENTER, NULL, curbuf->b_fname, FALSE, curbuf); | |
| 1748 } | |
| 1749 #endif | |
| 1750 return; | |
| 1751 } | |
| 1752 | |
| 1753 /* | |
| 1754 * Find the names of swap files in current directory and the directory given | |
| 1755 * with the 'directory' option. | |
| 1756 * | |
| 1757 * Used to: | |
| 1758 * - list the swap files for "vim -r" | |
| 1759 * - count the number of swap files when recovering | |
| 1760 * - list the swap files when recovering | |
| 1761 * - find the name of the n'th swap file when recovering | |
| 1762 */ | |
| 1763 int | |
|
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1764 recover_names( |
|
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1765 char_u *fname, /* base for swap file name */ |
|
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1766 int list, /* when TRUE, list the swap file names */ |
|
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1767 int nr, /* when non-zero, return nr'th swap file name */ |
|
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1768 char_u **fname_out) /* result when "nr" > 0 */ |
| 7 | 1769 { |
| 1770 int num_names; | |
| 1771 char_u *(names[6]); | |
| 1772 char_u *tail; | |
| 1773 char_u *p; | |
| 1774 int num_files; | |
| 1775 int file_count = 0; | |
| 1776 char_u **files; | |
| 1777 int i; | |
| 1778 char_u *dirp; | |
| 1779 char_u *dir_name; | |
| 2175 | 1780 char_u *fname_res = NULL; |
|
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1781 #ifdef HAVE_READLINK |
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1782 char_u fname_buf[MAXPATHL]; |
| 2175 | 1783 #endif |
| 1784 | |
| 1785 if (fname != NULL) | |
| 1786 { | |
| 1787 #ifdef HAVE_READLINK | |
| 2267 | 1788 /* Expand symlink in the file name, because the swap file is created |
| 1789 * with the actual file instead of with the symlink. */ | |
| 1790 if (resolve_symlink(fname, fname_buf) == OK) | |
| 1791 fname_res = fname_buf; | |
| 1792 else | |
|
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1793 #endif |
| 2267 | 1794 fname_res = fname; |
| 2175 | 1795 } |
| 7 | 1796 |
| 1797 if (list) | |
| 1798 { | |
|
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1799 /* use msg() to start the scrolling properly */ |
| 7 | 1800 msg((char_u *)_("Swap files found:")); |
| 1801 msg_putchar('\n'); | |
| 1802 } | |
| 1803 | |
| 1804 /* | |
| 1805 * Do the loop for every directory in 'directory'. | |
| 1806 * First allocate some memory to put the directory name in. | |
| 1807 */ | |
| 1808 dir_name = alloc((unsigned)STRLEN(p_dir) + 1); | |
| 1809 dirp = p_dir; | |
| 1810 while (dir_name != NULL && *dirp) | |
| 1811 { | |
| 1812 /* | |
| 1813 * Isolate a directory name from *dirp and put it in dir_name (we know | |
| 1814 * it is large enough, so use 31000 for length). | |
| 1815 * Advance dirp to next directory name. | |
| 1816 */ | |
| 1817 (void)copy_option_part(&dirp, dir_name, 31000, ","); | |
| 1818 | |
| 1819 if (dir_name[0] == '.' && dir_name[1] == NUL) /* check current dir */ | |
| 1820 { | |
| 2267 | 1821 if (fname == NULL) |
| 7 | 1822 { |
| 1823 #ifdef VMS | |
| 1824 names[0] = vim_strsave((char_u *)"*_sw%"); | |
| 1825 #else | |
| 1826 names[0] = vim_strsave((char_u *)"*.sw?"); | |
| 1827 #endif | |
| 1005 | 1828 #if defined(UNIX) || defined(WIN3264) |
| 1829 /* For Unix names starting with a dot are special. MS-Windows | |
| 1830 * supports this too, on some file systems. */ | |
| 7 | 1831 names[1] = vim_strsave((char_u *)".*.sw?"); |
| 1832 names[2] = vim_strsave((char_u *)".sw?"); | |
| 1833 num_names = 3; | |
| 1834 #else | |
| 1835 # ifdef VMS | |
| 1836 names[1] = vim_strsave((char_u *)".*_sw%"); | |
| 1837 num_names = 2; | |
| 1838 # else | |
| 1839 num_names = 1; | |
| 1840 # endif | |
| 1841 #endif | |
| 1842 } | |
| 1843 else | |
|
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|
1844 num_names = recov_file_names(names, fname_res, TRUE); |
| 7 | 1845 } |
| 1846 else /* check directory dir_name */ | |
| 1847 { | |
| 2267 | 1848 if (fname == NULL) |
| 7 | 1849 { |
| 1850 #ifdef VMS | |
| 1851 names[0] = concat_fnames(dir_name, (char_u *)"*_sw%", TRUE); | |
| 1852 #else | |
| 1853 names[0] = concat_fnames(dir_name, (char_u *)"*.sw?", TRUE); | |
| 1854 #endif | |
| 1005 | 1855 #if defined(UNIX) || defined(WIN3264) |
| 1856 /* For Unix names starting with a dot are special. MS-Windows | |
| 1857 * supports this too, on some file systems. */ | |
| 7 | 1858 names[1] = concat_fnames(dir_name, (char_u *)".*.sw?", TRUE); |
| 1859 names[2] = concat_fnames(dir_name, (char_u *)".sw?", TRUE); | |
| 1860 num_names = 3; | |
| 1861 #else | |
| 1862 # ifdef VMS | |
| 1863 names[1] = concat_fnames(dir_name, (char_u *)".*_sw%", TRUE); | |
| 1864 num_names = 2; | |
| 1865 # else | |
| 1866 num_names = 1; | |
| 1867 # endif | |
| 1868 #endif | |
| 1869 } | |
| 1870 else | |
| 1871 { | |
| 1872 #if defined(UNIX) || defined(WIN3264) | |
| 1873 p = dir_name + STRLEN(dir_name); | |
| 39 | 1874 if (after_pathsep(dir_name, p) && p[-1] == p[-2]) |
| 7 | 1875 { |
| 1876 /* Ends with '//', Use Full path for swap name */ | |
|
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1877 tail = make_percent_swname(dir_name, fname_res); |
| 7 | 1878 } |
| 1879 else | |
| 1880 #endif | |
| 1881 { | |
|
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|
1882 tail = gettail(fname_res); |
| 7 | 1883 tail = concat_fnames(dir_name, tail, TRUE); |
| 1884 } | |
| 1885 if (tail == NULL) | |
| 1886 num_names = 0; | |
| 1887 else | |
| 1888 { | |
| 1889 num_names = recov_file_names(names, tail, FALSE); | |
| 1890 vim_free(tail); | |
| 1891 } | |
| 1892 } | |
| 1893 } | |
| 1894 | |
| 1895 /* check for out-of-memory */ | |
| 1896 for (i = 0; i < num_names; ++i) | |
| 1897 { | |
| 1898 if (names[i] == NULL) | |
| 1899 { | |
| 1900 for (i = 0; i < num_names; ++i) | |
| 1901 vim_free(names[i]); | |
| 1902 num_names = 0; | |
| 1903 } | |
| 1904 } | |
| 1905 if (num_names == 0) | |
| 1906 num_files = 0; | |
| 1907 else if (expand_wildcards(num_names, names, &num_files, &files, | |
| 1908 EW_KEEPALL|EW_FILE|EW_SILENT) == FAIL) | |
| 1909 num_files = 0; | |
| 1910 | |
| 1911 /* | |
| 1912 * When no swap file found, wildcard expansion might have failed (e.g. | |
| 1913 * not able to execute the shell). | |
| 1914 * Try finding a swap file by simply adding ".swp" to the file name. | |
| 1915 */ | |
| 2267 | 1916 if (*dirp == NUL && file_count + num_files == 0 && fname != NULL) |
| 7 | 1917 { |
| 1918 struct stat st; | |
| 1919 char_u *swapname; | |
| 1920 | |
|
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1921 swapname = modname(fname_res, |
| 2823 | 1922 #if defined(VMS) |
|
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1923 (char_u *)"_swp", FALSE |
| 7 | 1924 #else |
|
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1925 (char_u *)".swp", TRUE |
| 7 | 1926 #endif |
|
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1927 ); |
| 7 | 1928 if (swapname != NULL) |
| 1929 { | |
| 1930 if (mch_stat((char *)swapname, &st) != -1) /* It exists! */ | |
| 1931 { | |
| 1932 files = (char_u **)alloc((unsigned)sizeof(char_u *)); | |
| 1933 if (files != NULL) | |
| 1934 { | |
| 1935 files[0] = swapname; | |
| 1936 swapname = NULL; | |
| 1937 num_files = 1; | |
| 1938 } | |
| 1939 } | |
| 1940 vim_free(swapname); | |
| 1941 } | |
| 1942 } | |
| 1943 | |
| 1944 /* | |
| 1945 * remove swapfile name of the current buffer, it must be ignored | |
| 1946 */ | |
| 1947 if (curbuf->b_ml.ml_mfp != NULL | |
| 1948 && (p = curbuf->b_ml.ml_mfp->mf_fname) != NULL) | |
| 1949 { | |
| 1950 for (i = 0; i < num_files; ++i) | |
| 1951 if (fullpathcmp(p, files[i], TRUE) & FPC_SAME) | |
| 1952 { | |
| 1855 | 1953 /* Remove the name from files[i]. Move further entries |
| 1954 * down. When the array becomes empty free it here, since | |
| 1955 * FreeWild() won't be called below. */ | |
| 7 | 1956 vim_free(files[i]); |
| 1855 | 1957 if (--num_files == 0) |
| 1958 vim_free(files); | |
| 1959 else | |
| 1960 for ( ; i < num_files; ++i) | |
| 1961 files[i] = files[i + 1]; | |
| 7 | 1962 } |
| 1963 } | |
| 838 | 1964 if (nr > 0) |
| 7 | 1965 { |
| 1966 file_count += num_files; | |
| 1967 if (nr <= file_count) | |
| 1968 { | |
| 2267 | 1969 *fname_out = vim_strsave( |
| 1970 files[nr - 1 + num_files - file_count]); | |
| 7 | 1971 dirp = (char_u *)""; /* stop searching */ |
| 1972 } | |
| 1973 } | |
| 1974 else if (list) | |
| 1975 { | |
| 1976 if (dir_name[0] == '.' && dir_name[1] == NUL) | |
| 1977 { | |
| 2267 | 1978 if (fname == NULL) |
| 7 | 1979 MSG_PUTS(_(" In current directory:\n")); |
| 1980 else | |
| 1981 MSG_PUTS(_(" Using specified name:\n")); | |
| 1982 } | |
| 1983 else | |
| 1984 { | |
| 1985 MSG_PUTS(_(" In directory ")); | |
| 1986 msg_home_replace(dir_name); | |
| 1987 MSG_PUTS(":\n"); | |
| 1988 } | |
| 1989 | |
| 1990 if (num_files) | |
| 1991 { | |
| 1992 for (i = 0; i < num_files; ++i) | |
| 1993 { | |
| 1994 /* print the swap file name */ | |
| 1995 msg_outnum((long)++file_count); | |
| 1996 MSG_PUTS(". "); | |
| 1997 msg_puts(gettail(files[i])); | |
| 1998 msg_putchar('\n'); | |
| 1999 (void)swapfile_info(files[i]); | |
| 2000 } | |
| 2001 } | |
| 2002 else | |
| 2003 MSG_PUTS(_(" -- none --\n")); | |
| 2004 out_flush(); | |
| 2005 } | |
| 2006 else | |
| 2007 file_count += num_files; | |
| 2008 | |
| 2009 for (i = 0; i < num_names; ++i) | |
| 2010 vim_free(names[i]); | |
| 838 | 2011 if (num_files > 0) |
| 2012 FreeWild(num_files, files); | |
| 7 | 2013 } |
| 2014 vim_free(dir_name); | |
| 2015 return file_count; | |
| 2016 } | |
| 2017 | |
| 2018 #if defined(UNIX) || defined(WIN3264) /* Need _very_ long file names */ | |
| 2019 /* | |
| 2020 * Append the full path to name with path separators made into percent | |
| 2021 * signs, to dir. An unnamed buffer is handled as "" (<currentdir>/"") | |
| 2022 */ | |
| 2023 static char_u * | |
|
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2024 make_percent_swname(char_u *dir, char_u *name) |
| 7 | 2025 { |
| 39 | 2026 char_u *d, *s, *f; |
| 7 | 2027 |
| 2028 f = fix_fname(name != NULL ? name : (char_u *) ""); | |
| 2029 d = NULL; | |
| 2030 if (f != NULL) | |
| 2031 { | |
| 2032 s = alloc((unsigned)(STRLEN(f) + 1)); | |
| 2033 if (s != NULL) | |
| 2034 { | |
| 39 | 2035 STRCPY(s, f); |
| 2036 for (d = s; *d != NUL; mb_ptr_adv(d)) | |
| 2037 if (vim_ispathsep(*d)) | |
| 2038 *d = '%'; | |
| 7 | 2039 d = concat_fnames(dir, s, TRUE); |
| 2040 vim_free(s); | |
| 2041 } | |
| 2042 vim_free(f); | |
| 2043 } | |
| 2044 return d; | |
| 2045 } | |
| 2046 #endif | |
| 2047 | |
| 2048 #if (defined(UNIX) || defined(__EMX__) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)) | |
| 2049 static int process_still_running; | |
| 2050 #endif | |
| 2051 | |
| 2052 /* | |
| 580 | 2053 * Give information about an existing swap file. |
| 7 | 2054 * Returns timestamp (0 when unknown). |
| 2055 */ | |
| 2056 static time_t | |
|
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2057 swapfile_info(char_u *fname) |
| 7 | 2058 { |
| 2059 struct stat st; | |
| 2060 int fd; | |
| 2061 struct block0 b0; | |
| 2062 time_t x = (time_t)0; | |
| 1001 | 2063 char *p; |
| 7 | 2064 #ifdef UNIX |
| 2065 char_u uname[B0_UNAME_SIZE]; | |
| 2066 #endif | |
| 2067 | |
| 2068 /* print the swap file date */ | |
| 2069 if (mch_stat((char *)fname, &st) != -1) | |
| 2070 { | |
| 2071 #ifdef UNIX | |
| 2072 /* print name of owner of the file */ | |
| 2073 if (mch_get_uname(st.st_uid, uname, B0_UNAME_SIZE) == OK) | |
| 2074 { | |
| 2075 MSG_PUTS(_(" owned by: ")); | |
| 2076 msg_outtrans(uname); | |
| 2077 MSG_PUTS(_(" dated: ")); | |
| 2078 } | |
| 2079 else | |
| 2080 #endif | |
| 2081 MSG_PUTS(_(" dated: ")); | |
| 2082 x = st.st_mtime; /* Manx C can't do &st.st_mtime */ | |
| 1001 | 2083 p = ctime(&x); /* includes '\n' */ |
| 2084 if (p == NULL) | |
| 2085 MSG_PUTS("(invalid)\n"); | |
| 2086 else | |
| 2087 MSG_PUTS(p); | |
| 7 | 2088 } |
| 2089 | |
| 2090 /* | |
| 2091 * print the original file name | |
| 2092 */ | |
| 2093 fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
| 2094 if (fd >= 0) | |
| 2095 { | |
| 2664 | 2096 if (read_eintr(fd, &b0, sizeof(b0)) == sizeof(b0)) |
| 7 | 2097 { |
| 2098 if (STRNCMP(b0.b0_version, "VIM 3.0", 7) == 0) | |
| 2099 { | |
| 2100 MSG_PUTS(_(" [from Vim version 3.0]")); | |
| 2101 } | |
| 2267 | 2102 else if (ml_check_b0_id(&b0) == FAIL) |
| 7 | 2103 { |
| 2104 MSG_PUTS(_(" [does not look like a Vim swap file]")); | |
| 2105 } | |
| 2106 else | |
| 2107 { | |
| 2108 MSG_PUTS(_(" file name: ")); | |
| 2109 if (b0.b0_fname[0] == NUL) | |
| 9 | 2110 MSG_PUTS(_("[No Name]")); |
| 7 | 2111 else |
| 2112 msg_outtrans(b0.b0_fname); | |
| 2113 | |
| 2114 MSG_PUTS(_("\n modified: ")); | |
| 2115 MSG_PUTS(b0.b0_dirty ? _("YES") : _("no")); | |
| 2116 | |
| 2117 if (*(b0.b0_uname) != NUL) | |
| 2118 { | |
| 2119 MSG_PUTS(_("\n user name: ")); | |
| 2120 msg_outtrans(b0.b0_uname); | |
| 2121 } | |
| 2122 | |
| 2123 if (*(b0.b0_hname) != NUL) | |
| 2124 { | |
| 2125 if (*(b0.b0_uname) != NUL) | |
| 2126 MSG_PUTS(_(" host name: ")); | |
| 2127 else | |
| 2128 MSG_PUTS(_("\n host name: ")); | |
| 2129 msg_outtrans(b0.b0_hname); | |
| 2130 } | |
| 2131 | |
| 2132 if (char_to_long(b0.b0_pid) != 0L) | |
| 2133 { | |
| 2134 MSG_PUTS(_("\n process ID: ")); | |
| 2135 msg_outnum(char_to_long(b0.b0_pid)); | |
| 2136 #if defined(UNIX) || defined(__EMX__) | |
| 2137 /* EMX kill() not working correctly, it seems */ | |
| 2138 if (kill((pid_t)char_to_long(b0.b0_pid), 0) == 0) | |
| 2139 { | |
| 2140 MSG_PUTS(_(" (still running)")); | |
| 2141 # if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) | |
| 2142 process_still_running = TRUE; | |
| 2143 # endif | |
| 2144 } | |
| 2145 #endif | |
| 2146 } | |
| 2147 | |
| 2148 if (b0_magic_wrong(&b0)) | |
| 2149 { | |
| 2150 #if defined(MSDOS) || defined(MSWIN) | |
| 2151 if (STRNCMP(b0.b0_hname, "PC ", 3) == 0) | |
| 2152 MSG_PUTS(_("\n [not usable with this version of Vim]")); | |
| 2153 else | |
| 2154 #endif | |
| 2155 MSG_PUTS(_("\n [not usable on this computer]")); | |
| 2156 } | |
| 2157 } | |
| 2158 } | |
| 2159 else | |
| 2160 MSG_PUTS(_(" [cannot be read]")); | |
| 2161 close(fd); | |
| 2162 } | |
| 2163 else | |
| 2164 MSG_PUTS(_(" [cannot be opened]")); | |
| 2165 msg_putchar('\n'); | |
| 2166 | |
| 2167 return x; | |
| 2168 } | |
| 2169 | |
| 2170 static int | |
|
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2171 recov_file_names(char_u **names, char_u *path, int prepend_dot) |
| 7 | 2172 { |
| 2173 int num_names; | |
| 2174 | |
| 2175 #ifdef SHORT_FNAME | |
| 2176 /* | |
| 2177 * (MS-DOS) always short names | |
| 2178 */ | |
| 2179 names[0] = modname(path, (char_u *)".sw?", FALSE); | |
| 2180 num_names = 1; | |
| 2181 #else /* !SHORT_FNAME */ | |
| 2182 /* | |
| 2183 * (Win32 and Win64) never short names, but do prepend a dot. | |
| 2184 * (Not MS-DOS or Win32 or Win64) maybe short name, maybe not: Try both. | |
| 2185 * Only use the short name if it is different. | |
| 2186 */ | |
| 2187 char_u *p; | |
| 2188 int i; | |
| 2189 # ifndef WIN3264 | |
| 2190 int shortname = curbuf->b_shortname; | |
| 2191 | |
| 2192 curbuf->b_shortname = FALSE; | |
| 2193 # endif | |
| 2194 | |
| 2195 num_names = 0; | |
| 2196 | |
| 2197 /* | |
| 2198 * May also add the file name with a dot prepended, for swap file in same | |
| 2199 * dir as original file. | |
| 2200 */ | |
| 2201 if (prepend_dot) | |
| 2202 { | |
| 2203 names[num_names] = modname(path, (char_u *)".sw?", TRUE); | |
| 2204 if (names[num_names] == NULL) | |
| 2205 goto end; | |
| 2206 ++num_names; | |
| 2207 } | |
| 2208 | |
| 2209 /* | |
| 2210 * Form the normal swap file name pattern by appending ".sw?". | |
| 2211 */ | |
| 2212 #ifdef VMS | |
| 2213 names[num_names] = concat_fnames(path, (char_u *)"_sw%", FALSE); | |
| 2214 #else | |
| 2215 names[num_names] = concat_fnames(path, (char_u *)".sw?", FALSE); | |
| 2216 #endif | |
| 2217 if (names[num_names] == NULL) | |
| 2218 goto end; | |
| 2219 if (num_names >= 1) /* check if we have the same name twice */ | |
| 2220 { | |
| 2221 p = names[num_names - 1]; | |
| 2222 i = (int)STRLEN(names[num_names - 1]) - (int)STRLEN(names[num_names]); | |
| 2223 if (i > 0) | |
| 2224 p += i; /* file name has been expanded to full path */ | |
| 2225 | |
| 2226 if (STRCMP(p, names[num_names]) != 0) | |
| 2227 ++num_names; | |
| 2228 else | |
| 2229 vim_free(names[num_names]); | |
| 2230 } | |
| 2231 else | |
| 2232 ++num_names; | |
| 2233 | |
| 2234 # ifndef WIN3264 | |
| 2235 /* | |
| 2236 * Also try with 'shortname' set, in case the file is on a DOS filesystem. | |
| 2237 */ | |
| 2238 curbuf->b_shortname = TRUE; | |
| 2239 #ifdef VMS | |
| 2240 names[num_names] = modname(path, (char_u *)"_sw%", FALSE); | |
| 2241 #else | |
| 2242 names[num_names] = modname(path, (char_u *)".sw?", FALSE); | |
| 2243 #endif | |
| 2244 if (names[num_names] == NULL) | |
| 2245 goto end; | |
| 2246 | |
| 2247 /* | |
| 2248 * Remove the one from 'shortname', if it's the same as with 'noshortname'. | |
| 2249 */ | |
| 2250 p = names[num_names]; | |
| 2251 i = STRLEN(names[num_names]) - STRLEN(names[num_names - 1]); | |
| 2252 if (i > 0) | |
| 2253 p += i; /* file name has been expanded to full path */ | |
| 2254 if (STRCMP(names[num_names - 1], p) == 0) | |
| 2255 vim_free(names[num_names]); | |
| 2256 else | |
| 2257 ++num_names; | |
| 2258 # endif | |
| 2259 | |
| 2260 end: | |
| 2261 # ifndef WIN3264 | |
| 2262 curbuf->b_shortname = shortname; | |
| 2263 # endif | |
| 2264 | |
| 2265 #endif /* !SHORT_FNAME */ | |
| 2266 | |
| 2267 return num_names; | |
| 2268 } | |
| 2269 | |
| 2270 /* | |
| 2271 * sync all memlines | |
| 2272 * | |
| 2273 * If 'check_file' is TRUE, check if original file exists and was not changed. | |
| 2274 * If 'check_char' is TRUE, stop syncing when character becomes available, but | |
| 2275 * always sync at least one block. | |
| 2276 */ | |
| 2277 void | |
|
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2278 ml_sync_all(int check_file, int check_char) |
| 7 | 2279 { |
| 2280 buf_T *buf; | |
| 2281 struct stat st; | |
| 2282 | |
| 2283 for (buf = firstbuf; buf != NULL; buf = buf->b_next) | |
| 2284 { | |
| 2285 if (buf->b_ml.ml_mfp == NULL || buf->b_ml.ml_mfp->mf_fname == NULL) | |
| 2286 continue; /* no file */ | |
| 2287 | |
| 2288 ml_flush_line(buf); /* flush buffered line */ | |
| 2289 /* flush locked block */ | |
| 2290 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); | |
| 2291 if (bufIsChanged(buf) && check_file && mf_need_trans(buf->b_ml.ml_mfp) | |
| 2292 && buf->b_ffname != NULL) | |
| 2293 { | |
| 2294 /* | |
| 2295 * If the original file does not exist anymore or has been changed | |
| 2296 * call ml_preserve() to get rid of all negative numbered blocks. | |
| 2297 */ | |
| 2298 if (mch_stat((char *)buf->b_ffname, &st) == -1 | |
| 2299 || st.st_mtime != buf->b_mtime_read | |
|
2241
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Correct use of long instead of off_t for file size. (James Vega)
Bram Moolenaar <bram@vim.org>
parents:
2240
diff
changeset
|
2300 || st.st_size != buf->b_orig_size) |
| 7 | 2301 { |
| 2302 ml_preserve(buf, FALSE); | |
| 2303 did_check_timestamps = FALSE; | |
| 2304 need_check_timestamps = TRUE; /* give message later */ | |
| 2305 } | |
| 2306 } | |
| 2307 if (buf->b_ml.ml_mfp->mf_dirty) | |
| 2308 { | |
| 2309 (void)mf_sync(buf->b_ml.ml_mfp, (check_char ? MFS_STOP : 0) | |
| 2310 | (bufIsChanged(buf) ? MFS_FLUSH : 0)); | |
| 2311 if (check_char && ui_char_avail()) /* character available now */ | |
| 2312 break; | |
| 2313 } | |
| 2314 } | |
| 2315 } | |
| 2316 | |
| 2317 /* | |
| 2318 * sync one buffer, including negative blocks | |
| 2319 * | |
| 2320 * after this all the blocks are in the swap file | |
| 2321 * | |
| 2322 * Used for the :preserve command and when the original file has been | |
| 2323 * changed or deleted. | |
| 2324 * | |
| 2325 * when message is TRUE the success of preserving is reported | |
| 2326 */ | |
| 2327 void | |
|
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2328 ml_preserve(buf_T *buf, int message) |
| 7 | 2329 { |
| 2330 bhdr_T *hp; | |
| 2331 linenr_T lnum; | |
| 2332 memfile_T *mfp = buf->b_ml.ml_mfp; | |
| 2333 int status; | |
| 2334 int got_int_save = got_int; | |
| 2335 | |
| 2336 if (mfp == NULL || mfp->mf_fname == NULL) | |
| 2337 { | |
| 2338 if (message) | |
| 2339 EMSG(_("E313: Cannot preserve, there is no swap file")); | |
| 2340 return; | |
| 2341 } | |
| 2342 | |
| 2343 /* We only want to stop when interrupted here, not when interrupted | |
| 2344 * before. */ | |
| 2345 got_int = FALSE; | |
| 2346 | |
| 2347 ml_flush_line(buf); /* flush buffered line */ | |
| 2348 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
| 2349 status = mf_sync(mfp, MFS_ALL | MFS_FLUSH); | |
| 2350 | |
| 2351 /* stack is invalid after mf_sync(.., MFS_ALL) */ | |
| 2352 buf->b_ml.ml_stack_top = 0; | |
| 2353 | |
| 2354 /* | |
| 2355 * Some of the data blocks may have been changed from negative to | |
| 2356 * positive block number. In that case the pointer blocks need to be | |
| 2357 * updated. | |
| 2358 * | |
| 2359 * We don't know in which pointer block the references are, so we visit | |
| 2360 * all data blocks until there are no more translations to be done (or | |
| 2361 * we hit the end of the file, which can only happen in case a write fails, | |
| 2362 * e.g. when file system if full). | |
| 2363 * ml_find_line() does the work by translating the negative block numbers | |
| 2364 * when getting the first line of each data block. | |
| 2365 */ | |
| 2366 if (mf_need_trans(mfp) && !got_int) | |
| 2367 { | |
| 2368 lnum = 1; | |
| 2369 while (mf_need_trans(mfp) && lnum <= buf->b_ml.ml_line_count) | |
| 2370 { | |
| 2371 hp = ml_find_line(buf, lnum, ML_FIND); | |
| 2372 if (hp == NULL) | |
| 2373 { | |
| 2374 status = FAIL; | |
| 2375 goto theend; | |
| 2376 } | |
| 2377 CHECK(buf->b_ml.ml_locked_low != lnum, "low != lnum"); | |
| 2378 lnum = buf->b_ml.ml_locked_high + 1; | |
| 2379 } | |
| 2380 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */ | |
| 2381 /* sync the updated pointer blocks */ | |
| 2382 if (mf_sync(mfp, MFS_ALL | MFS_FLUSH) == FAIL) | |
| 2383 status = FAIL; | |
| 2384 buf->b_ml.ml_stack_top = 0; /* stack is invalid now */ | |
| 2385 } | |
| 2386 theend: | |
| 2387 got_int |= got_int_save; | |
| 2388 | |
| 2389 if (message) | |
| 2390 { | |
| 2391 if (status == OK) | |
| 2392 MSG(_("File preserved")); | |
| 2393 else | |
| 2394 EMSG(_("E314: Preserve failed")); | |
| 2395 } | |
| 2396 } | |
| 2397 | |
| 2398 /* | |
| 2399 * NOTE: The pointer returned by the ml_get_*() functions only remains valid | |
| 2400 * until the next call! | |
| 2401 * line1 = ml_get(1); | |
| 2402 * line2 = ml_get(2); // line1 is now invalid! | |
| 2403 * Make a copy of the line if necessary. | |
| 2404 */ | |
| 2405 /* | |
| 2657 | 2406 * Return a pointer to a (read-only copy of a) line. |
| 7 | 2407 * |
| 2408 * On failure an error message is given and IObuff is returned (to avoid | |
| 2409 * having to check for error everywhere). | |
| 2410 */ | |
| 2411 char_u * | |
|
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41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2412 ml_get(linenr_T lnum) |
| 7 | 2413 { |
| 2414 return ml_get_buf(curbuf, lnum, FALSE); | |
| 2415 } | |
| 2416 | |
| 2417 /* | |
| 2657 | 2418 * Return pointer to position "pos". |
| 7 | 2419 */ |
| 2420 char_u * | |
|
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2421 ml_get_pos(pos_T *pos) |
| 7 | 2422 { |
| 2423 return (ml_get_buf(curbuf, pos->lnum, FALSE) + pos->col); | |
| 2424 } | |
| 2425 | |
| 2426 /* | |
| 2657 | 2427 * Return pointer to cursor line. |
| 7 | 2428 */ |
| 2429 char_u * | |
|
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2430 ml_get_curline(void) |
| 7 | 2431 { |
| 2432 return ml_get_buf(curbuf, curwin->w_cursor.lnum, FALSE); | |
| 2433 } | |
| 2434 | |
| 2435 /* | |
| 2657 | 2436 * Return pointer to cursor position. |
| 7 | 2437 */ |
| 2438 char_u * | |
|
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2439 ml_get_cursor(void) |
| 7 | 2440 { |
| 2441 return (ml_get_buf(curbuf, curwin->w_cursor.lnum, FALSE) + | |
| 2442 curwin->w_cursor.col); | |
| 2443 } | |
| 2444 | |
| 2445 /* | |
| 2657 | 2446 * Return a pointer to a line in a specific buffer |
| 7 | 2447 * |
| 2448 * "will_change": if TRUE mark the buffer dirty (chars in the line will be | |
| 2449 * changed) | |
| 2450 */ | |
| 2451 char_u * | |
|
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2452 ml_get_buf( |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2453 buf_T *buf, |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2454 linenr_T lnum, |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
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parents:
7803
diff
changeset
|
2455 int will_change) /* line will be changed */ |
| 7 | 2456 { |
| 1068 | 2457 bhdr_T *hp; |
| 2458 DATA_BL *dp; | |
| 2459 char_u *ptr; | |
| 2460 static int recursive = 0; | |
| 7 | 2461 |
| 2462 if (lnum > buf->b_ml.ml_line_count) /* invalid line number */ | |
| 2463 { | |
| 1068 | 2464 if (recursive == 0) |
| 2465 { | |
| 2466 /* Avoid giving this message for a recursive call, may happen when | |
| 2467 * the GUI redraws part of the text. */ | |
| 2468 ++recursive; | |
| 2469 EMSGN(_("E315: ml_get: invalid lnum: %ld"), lnum); | |
| 2470 --recursive; | |
| 2471 } | |
| 7 | 2472 errorret: |
| 2473 STRCPY(IObuff, "???"); | |
| 2474 return IObuff; | |
| 2475 } | |
| 2476 if (lnum <= 0) /* pretend line 0 is line 1 */ | |
| 2477 lnum = 1; | |
| 2478 | |
| 2479 if (buf->b_ml.ml_mfp == NULL) /* there are no lines */ | |
| 2480 return (char_u *)""; | |
| 2481 | |
|
2108
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Bram Moolenaar <bram@zimbu.org>
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diff
changeset
|
2482 /* |
|
3cdf2a653e00
updated for version 7.2.391
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parents:
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diff
changeset
|
2483 * See if it is the same line as requested last time. |
|
3cdf2a653e00
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parents:
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diff
changeset
|
2484 * Otherwise may need to flush last used line. |
|
3cdf2a653e00
updated for version 7.2.391
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parents:
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diff
changeset
|
2485 * Don't use the last used line when 'swapfile' is reset, need to load all |
|
3cdf2a653e00
updated for version 7.2.391
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parents:
2075
diff
changeset
|
2486 * blocks. |
|
3cdf2a653e00
updated for version 7.2.391
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parents:
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diff
changeset
|
2487 */ |
| 1066 | 2488 if (buf->b_ml.ml_line_lnum != lnum || mf_dont_release) |
| 7 | 2489 { |
| 2490 ml_flush_line(buf); | |
| 2491 | |
| 2492 /* | |
| 2493 * Find the data block containing the line. | |
| 2494 * This also fills the stack with the blocks from the root to the data | |
| 2495 * block and releases any locked block. | |
| 2496 */ | |
| 2497 if ((hp = ml_find_line(buf, lnum, ML_FIND)) == NULL) | |
| 2498 { | |
| 1068 | 2499 if (recursive == 0) |
| 2500 { | |
| 2501 /* Avoid giving this message for a recursive call, may happen | |
| 2502 * when the GUI redraws part of the text. */ | |
| 2503 ++recursive; | |
| 2504 EMSGN(_("E316: ml_get: cannot find line %ld"), lnum); | |
| 2505 --recursive; | |
| 2506 } | |
| 7 | 2507 goto errorret; |
| 2508 } | |
| 2509 | |
| 2510 dp = (DATA_BL *)(hp->bh_data); | |
| 2511 | |
| 2512 ptr = (char_u *)dp + ((dp->db_index[lnum - buf->b_ml.ml_locked_low]) & DB_INDEX_MASK); | |
| 2513 buf->b_ml.ml_line_ptr = ptr; | |
| 2514 buf->b_ml.ml_line_lnum = lnum; | |
| 2515 buf->b_ml.ml_flags &= ~ML_LINE_DIRTY; | |
| 2516 } | |
| 2517 if (will_change) | |
| 2518 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 2519 | |
| 2520 return buf->b_ml.ml_line_ptr; | |
| 2521 } | |
| 2522 | |
| 2523 /* | |
| 2524 * Check if a line that was just obtained by a call to ml_get | |
| 2525 * is in allocated memory. | |
| 2526 */ | |
| 2527 int | |
|
7827
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parents:
7803
diff
changeset
|
2528 ml_line_alloced(void) |
| 7 | 2529 { |
| 2530 return (curbuf->b_ml.ml_flags & ML_LINE_DIRTY); | |
| 2531 } | |
| 2532 | |
| 2533 /* | |
| 2534 * Append a line after lnum (may be 0 to insert a line in front of the file). | |
| 2535 * "line" does not need to be allocated, but can't be another line in a | |
| 2536 * buffer, unlocking may make it invalid. | |
| 2537 * | |
| 2538 * newfile: TRUE when starting to edit a new file, meaning that pe_old_lnum | |
| 2539 * will be set for recovery | |
| 2540 * Check: The caller of this function should probably also call | |
| 2541 * appended_lines(). | |
| 2542 * | |
| 2543 * return FAIL for failure, OK otherwise | |
| 2544 */ | |
| 2545 int | |
|
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parents:
7803
diff
changeset
|
2546 ml_append( |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
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parents:
7803
diff
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|
2547 linenr_T lnum, /* append after this line (can be 0) */ |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
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diff
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|
2548 char_u *line, /* text of the new line */ |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2549 colnr_T len, /* length of new line, including NUL, or 0 */ |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2550 int newfile) /* flag, see above */ |
| 7 | 2551 { |
| 2552 /* When starting up, we might still need to create the memfile */ | |
|
2394
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Bram Moolenaar <bram@vim.org>
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2360
diff
changeset
|
2553 if (curbuf->b_ml.ml_mfp == NULL && open_buffer(FALSE, NULL, 0) == FAIL) |
| 7 | 2554 return FAIL; |
| 2555 | |
| 2556 if (curbuf->b_ml.ml_line_lnum != 0) | |
| 2557 ml_flush_line(curbuf); | |
| 2558 return ml_append_int(curbuf, lnum, line, len, newfile, FALSE); | |
| 2559 } | |
| 2560 | |
| 748 | 2561 #if defined(FEAT_SPELL) || defined(PROTO) |
| 625 | 2562 /* |
| 2563 * Like ml_append() but for an arbitrary buffer. The buffer must already have | |
| 2564 * a memline. | |
| 2565 */ | |
| 2566 int | |
|
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parents:
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diff
changeset
|
2567 ml_append_buf( |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
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parents:
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diff
changeset
|
2568 buf_T *buf, |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
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parents:
7803
diff
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|
2569 linenr_T lnum, /* append after this line (can be 0) */ |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2570 char_u *line, /* text of the new line */ |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2571 colnr_T len, /* length of new line, including NUL, or 0 */ |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2572 int newfile) /* flag, see above */ |
| 625 | 2573 { |
| 2574 if (buf->b_ml.ml_mfp == NULL) | |
| 2575 return FAIL; | |
| 2576 | |
| 2577 if (buf->b_ml.ml_line_lnum != 0) | |
| 2578 ml_flush_line(buf); | |
| 2579 return ml_append_int(buf, lnum, line, len, newfile, FALSE); | |
| 2580 } | |
| 2581 #endif | |
| 2582 | |
| 7 | 2583 static int |
|
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diff
changeset
|
2584 ml_append_int( |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
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parents:
7803
diff
changeset
|
2585 buf_T *buf, |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
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parents:
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diff
changeset
|
2586 linenr_T lnum, /* append after this line (can be 0) */ |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2587 char_u *line, /* text of the new line */ |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2588 colnr_T len, /* length of line, including NUL, or 0 */ |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2589 int newfile, /* flag, see above */ |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2590 int mark) /* mark the new line */ |
| 7 | 2591 { |
| 2592 int i; | |
| 2593 int line_count; /* number of indexes in current block */ | |
| 2594 int offset; | |
| 2595 int from, to; | |
| 2596 int space_needed; /* space needed for new line */ | |
| 2597 int page_size; | |
| 2598 int page_count; | |
| 2599 int db_idx; /* index for lnum in data block */ | |
| 2600 bhdr_T *hp; | |
| 2601 memfile_T *mfp; | |
| 2602 DATA_BL *dp; | |
| 2603 PTR_BL *pp; | |
| 2604 infoptr_T *ip; | |
| 2605 | |
| 2606 /* lnum out of range */ | |
| 2607 if (lnum > buf->b_ml.ml_line_count || buf->b_ml.ml_mfp == NULL) | |
| 2608 return FAIL; | |
| 2609 | |
| 2610 if (lowest_marked && lowest_marked > lnum) | |
| 2611 lowest_marked = lnum + 1; | |
| 2612 | |
| 2613 if (len == 0) | |
| 2614 len = (colnr_T)STRLEN(line) + 1; /* space needed for the text */ | |
| 2615 space_needed = len + INDEX_SIZE; /* space needed for text + index */ | |
| 2616 | |
| 2617 mfp = buf->b_ml.ml_mfp; | |
| 2618 page_size = mfp->mf_page_size; | |
| 2619 | |
| 2620 /* | |
| 2621 * find the data block containing the previous line | |
| 2622 * This also fills the stack with the blocks from the root to the data block | |
| 2623 * This also releases any locked block. | |
| 2624 */ | |
| 2625 if ((hp = ml_find_line(buf, lnum == 0 ? (linenr_T)1 : lnum, | |
| 2626 ML_INSERT)) == NULL) | |
| 2627 return FAIL; | |
| 2628 | |
| 2629 buf->b_ml.ml_flags &= ~ML_EMPTY; | |
| 2630 | |
| 2631 if (lnum == 0) /* got line one instead, correct db_idx */ | |
| 2632 db_idx = -1; /* careful, it is negative! */ | |
| 2633 else | |
| 2634 db_idx = lnum - buf->b_ml.ml_locked_low; | |
| 2635 /* get line count before the insertion */ | |
| 2636 line_count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low; | |
| 2637 | |
| 2638 dp = (DATA_BL *)(hp->bh_data); | |
| 2639 | |
| 2640 /* | |
| 2641 * If | |
| 2642 * - there is not enough room in the current block | |
| 2643 * - appending to the last line in the block | |
| 2644 * - not appending to the last line in the file | |
| 2645 * insert in front of the next block. | |
| 2646 */ | |
| 2647 if ((int)dp->db_free < space_needed && db_idx == line_count - 1 | |
| 2648 && lnum < buf->b_ml.ml_line_count) | |
| 2649 { | |
| 2650 /* | |
| 2651 * Now that the line is not going to be inserted in the block that we | |
| 2652 * expected, the line count has to be adjusted in the pointer blocks | |
| 2653 * by using ml_locked_lineadd. | |
| 2654 */ | |
| 2655 --(buf->b_ml.ml_locked_lineadd); | |
| 2656 --(buf->b_ml.ml_locked_high); | |
| 2657 if ((hp = ml_find_line(buf, lnum + 1, ML_INSERT)) == NULL) | |
| 2658 return FAIL; | |
| 2659 | |
| 2660 db_idx = -1; /* careful, it is negative! */ | |
| 2661 /* get line count before the insertion */ | |
| 2662 line_count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low; | |
| 2663 CHECK(buf->b_ml.ml_locked_low != lnum + 1, "locked_low != lnum + 1"); | |
| 2664 | |
| 2665 dp = (DATA_BL *)(hp->bh_data); | |
| 2666 } | |
| 2667 | |
| 2668 ++buf->b_ml.ml_line_count; | |
| 2669 | |
| 2670 if ((int)dp->db_free >= space_needed) /* enough room in data block */ | |
| 2671 { | |
| 2672 /* | |
| 2673 * Insert new line in existing data block, or in data block allocated above. | |
| 2674 */ | |
| 2675 dp->db_txt_start -= len; | |
| 2676 dp->db_free -= space_needed; | |
| 2677 ++(dp->db_line_count); | |
| 2678 | |
| 2679 /* | |
| 2680 * move the text of the lines that follow to the front | |
| 2681 * adjust the indexes of the lines that follow | |
| 2682 */ | |
| 2683 if (line_count > db_idx + 1) /* if there are following lines */ | |
| 2684 { | |
| 2685 /* | |
| 2686 * Offset is the start of the previous line. | |
| 2687 * This will become the character just after the new line. | |
| 2688 */ | |
| 2689 if (db_idx < 0) | |
| 2690 offset = dp->db_txt_end; | |
| 2691 else | |
| 2692 offset = ((dp->db_index[db_idx]) & DB_INDEX_MASK); | |
| 2693 mch_memmove((char *)dp + dp->db_txt_start, | |
| 2694 (char *)dp + dp->db_txt_start + len, | |
| 2695 (size_t)(offset - (dp->db_txt_start + len))); | |
| 2696 for (i = line_count - 1; i > db_idx; --i) | |
| 2697 dp->db_index[i + 1] = dp->db_index[i] - len; | |
| 2698 dp->db_index[db_idx + 1] = offset - len; | |
| 2699 } | |
| 2700 else /* add line at the end */ | |
| 2701 dp->db_index[db_idx + 1] = dp->db_txt_start; | |
| 2702 | |
| 2703 /* | |
| 2704 * copy the text into the block | |
| 2705 */ | |
| 2706 mch_memmove((char *)dp + dp->db_index[db_idx + 1], line, (size_t)len); | |
| 2707 if (mark) | |
| 2708 dp->db_index[db_idx + 1] |= DB_MARKED; | |
| 2709 | |
| 2710 /* | |
| 2711 * Mark the block dirty. | |
| 2712 */ | |
| 2713 buf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 2714 if (!newfile) | |
| 2715 buf->b_ml.ml_flags |= ML_LOCKED_POS; | |
| 2716 } | |
| 2717 else /* not enough space in data block */ | |
| 2718 { | |
| 2719 /* | |
| 2720 * If there is not enough room we have to create a new data block and copy some | |
| 2721 * lines into it. | |
| 2722 * Then we have to insert an entry in the pointer block. | |
| 2723 * If this pointer block also is full, we go up another block, and so on, up | |
| 2724 * to the root if necessary. | |
| 2725 * The line counts in the pointer blocks have already been adjusted by | |
| 2726 * ml_find_line(). | |
| 2727 */ | |
| 2728 long line_count_left, line_count_right; | |
| 2729 int page_count_left, page_count_right; | |
| 2730 bhdr_T *hp_left; | |
| 2731 bhdr_T *hp_right; | |
| 2732 bhdr_T *hp_new; | |
| 2733 int lines_moved; | |
| 2734 int data_moved = 0; /* init to shut up gcc */ | |
| 2735 int total_moved = 0; /* init to shut up gcc */ | |
| 2736 DATA_BL *dp_right, *dp_left; | |
| 2737 int stack_idx; | |
| 2738 int in_left; | |
| 2739 int lineadd; | |
| 2740 blocknr_T bnum_left, bnum_right; | |
| 2741 linenr_T lnum_left, lnum_right; | |
| 2742 int pb_idx; | |
| 2743 PTR_BL *pp_new; | |
| 2744 | |
| 2745 /* | |
| 2746 * We are going to allocate a new data block. Depending on the | |
| 2747 * situation it will be put to the left or right of the existing | |
| 2748 * block. If possible we put the new line in the left block and move | |
| 2749 * the lines after it to the right block. Otherwise the new line is | |
| 2750 * also put in the right block. This method is more efficient when | |
| 2751 * inserting a lot of lines at one place. | |
| 2752 */ | |
| 2753 if (db_idx < 0) /* left block is new, right block is existing */ | |
| 2754 { | |
| 2755 lines_moved = 0; | |
| 2756 in_left = TRUE; | |
| 2757 /* space_needed does not change */ | |
| 2758 } | |
| 2759 else /* left block is existing, right block is new */ | |
| 2760 { | |
| 2761 lines_moved = line_count - db_idx - 1; | |
| 2762 if (lines_moved == 0) | |
| 2763 in_left = FALSE; /* put new line in right block */ | |
| 2764 /* space_needed does not change */ | |
| 2765 else | |
| 2766 { | |
| 2767 data_moved = ((dp->db_index[db_idx]) & DB_INDEX_MASK) - | |
| 2768 dp->db_txt_start; | |
| 2769 total_moved = data_moved + lines_moved * INDEX_SIZE; | |
| 2770 if ((int)dp->db_free + total_moved >= space_needed) | |
| 2771 { | |
| 2772 in_left = TRUE; /* put new line in left block */ | |
| 2773 space_needed = total_moved; | |
| 2774 } | |
| 2775 else | |
| 2776 { | |
| 2777 in_left = FALSE; /* put new line in right block */ | |
| 2778 space_needed += total_moved; | |
| 2779 } | |
| 2780 } | |
| 2781 } | |
| 2782 | |
| 2783 page_count = ((space_needed + HEADER_SIZE) + page_size - 1) / page_size; | |
| 2784 if ((hp_new = ml_new_data(mfp, newfile, page_count)) == NULL) | |
| 2785 { | |
| 2786 /* correct line counts in pointer blocks */ | |
| 2787 --(buf->b_ml.ml_locked_lineadd); | |
| 2788 --(buf->b_ml.ml_locked_high); | |
| 2789 return FAIL; | |
| 2790 } | |
| 2791 if (db_idx < 0) /* left block is new */ | |
| 2792 { | |
| 2793 hp_left = hp_new; | |
| 2794 hp_right = hp; | |
| 2795 line_count_left = 0; | |
| 2796 line_count_right = line_count; | |
| 2797 } | |
| 2798 else /* right block is new */ | |
| 2799 { | |
| 2800 hp_left = hp; | |
| 2801 hp_right = hp_new; | |
| 2802 line_count_left = line_count; | |
| 2803 line_count_right = 0; | |
| 2804 } | |
| 2805 dp_right = (DATA_BL *)(hp_right->bh_data); | |
| 2806 dp_left = (DATA_BL *)(hp_left->bh_data); | |
| 2807 bnum_left = hp_left->bh_bnum; | |
| 2808 bnum_right = hp_right->bh_bnum; | |
| 2809 page_count_left = hp_left->bh_page_count; | |
| 2810 page_count_right = hp_right->bh_page_count; | |
| 2811 | |
| 2812 /* | |
| 2813 * May move the new line into the right/new block. | |
| 2814 */ | |
| 2815 if (!in_left) | |
| 2816 { | |
| 2817 dp_right->db_txt_start -= len; | |
| 2818 dp_right->db_free -= len + INDEX_SIZE; | |
| 2819 dp_right->db_index[0] = dp_right->db_txt_start; | |
| 2820 if (mark) | |
| 2821 dp_right->db_index[0] |= DB_MARKED; | |
| 2822 | |
| 2823 mch_memmove((char *)dp_right + dp_right->db_txt_start, | |
| 2824 line, (size_t)len); | |
| 2825 ++line_count_right; | |
| 2826 } | |
| 2827 /* | |
| 2828 * may move lines from the left/old block to the right/new one. | |
| 2829 */ | |
| 2830 if (lines_moved) | |
| 2831 { | |
| 2832 /* | |
| 2833 */ | |
| 2834 dp_right->db_txt_start -= data_moved; | |
| 2835 dp_right->db_free -= total_moved; | |
| 2836 mch_memmove((char *)dp_right + dp_right->db_txt_start, | |
| 2837 (char *)dp_left + dp_left->db_txt_start, | |
| 2838 (size_t)data_moved); | |
| 2839 offset = dp_right->db_txt_start - dp_left->db_txt_start; | |
| 2840 dp_left->db_txt_start += data_moved; | |
| 2841 dp_left->db_free += total_moved; | |
| 2842 | |
| 2843 /* | |
| 2844 * update indexes in the new block | |
| 2845 */ | |
| 2846 for (to = line_count_right, from = db_idx + 1; | |
| 2847 from < line_count_left; ++from, ++to) | |
| 2848 dp_right->db_index[to] = dp->db_index[from] + offset; | |
| 2849 line_count_right += lines_moved; | |
| 2850 line_count_left -= lines_moved; | |
| 2851 } | |
| 2852 | |
| 2853 /* | |
| 2854 * May move the new line into the left (old or new) block. | |
| 2855 */ | |
| 2856 if (in_left) | |
| 2857 { | |
| 2858 dp_left->db_txt_start -= len; | |
| 2859 dp_left->db_free -= len + INDEX_SIZE; | |
| 2860 dp_left->db_index[line_count_left] = dp_left->db_txt_start; | |
| 2861 if (mark) | |
| 2862 dp_left->db_index[line_count_left] |= DB_MARKED; | |
| 2863 mch_memmove((char *)dp_left + dp_left->db_txt_start, | |
| 2864 line, (size_t)len); | |
| 2865 ++line_count_left; | |
| 2866 } | |
| 2867 | |
| 2868 if (db_idx < 0) /* left block is new */ | |
| 2869 { | |
| 2870 lnum_left = lnum + 1; | |
| 2871 lnum_right = 0; | |
| 2872 } | |
| 2873 else /* right block is new */ | |
| 2874 { | |
| 2875 lnum_left = 0; | |
| 2876 if (in_left) | |
| 2877 lnum_right = lnum + 2; | |
| 2878 else | |
| 2879 lnum_right = lnum + 1; | |
| 2880 } | |
| 2881 dp_left->db_line_count = line_count_left; | |
| 2882 dp_right->db_line_count = line_count_right; | |
| 2883 | |
| 2884 /* | |
| 2885 * release the two data blocks | |
| 2886 * The new one (hp_new) already has a correct blocknumber. | |
| 2887 * The old one (hp, in ml_locked) gets a positive blocknumber if | |
| 2888 * we changed it and we are not editing a new file. | |
| 2889 */ | |
| 2890 if (lines_moved || in_left) | |
| 2891 buf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 2892 if (!newfile && db_idx >= 0 && in_left) | |
| 2893 buf->b_ml.ml_flags |= ML_LOCKED_POS; | |
| 2894 mf_put(mfp, hp_new, TRUE, FALSE); | |
| 2895 | |
| 2896 /* | |
| 2897 * flush the old data block | |
| 2898 * set ml_locked_lineadd to 0, because the updating of the | |
| 2899 * pointer blocks is done below | |
| 2900 */ | |
| 2901 lineadd = buf->b_ml.ml_locked_lineadd; | |
| 2902 buf->b_ml.ml_locked_lineadd = 0; | |
| 2903 ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush data block */ | |
| 2904 | |
| 2905 /* | |
| 2906 * update pointer blocks for the new data block | |
| 2907 */ | |
| 2908 for (stack_idx = buf->b_ml.ml_stack_top - 1; stack_idx >= 0; | |
| 2909 --stack_idx) | |
| 2910 { | |
| 2911 ip = &(buf->b_ml.ml_stack[stack_idx]); | |
| 2912 pb_idx = ip->ip_index; | |
| 2913 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
| 2914 return FAIL; | |
| 2915 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
| 2916 if (pp->pb_id != PTR_ID) | |
| 2917 { | |
| 2918 EMSG(_("E317: pointer block id wrong 3")); | |
| 2919 mf_put(mfp, hp, FALSE, FALSE); | |
| 2920 return FAIL; | |
| 2921 } | |
| 2922 /* | |
| 2923 * TODO: If the pointer block is full and we are adding at the end | |
| 2924 * try to insert in front of the next block | |
| 2925 */ | |
| 2926 /* block not full, add one entry */ | |
| 2927 if (pp->pb_count < pp->pb_count_max) | |
| 2928 { | |
| 2929 if (pb_idx + 1 < (int)pp->pb_count) | |
| 2930 mch_memmove(&pp->pb_pointer[pb_idx + 2], | |
| 2931 &pp->pb_pointer[pb_idx + 1], | |
| 2932 (size_t)(pp->pb_count - pb_idx - 1) * sizeof(PTR_EN)); | |
| 2933 ++pp->pb_count; | |
| 2934 pp->pb_pointer[pb_idx].pe_line_count = line_count_left; | |
| 2935 pp->pb_pointer[pb_idx].pe_bnum = bnum_left; | |
| 2936 pp->pb_pointer[pb_idx].pe_page_count = page_count_left; | |
| 2937 pp->pb_pointer[pb_idx + 1].pe_line_count = line_count_right; | |
| 2938 pp->pb_pointer[pb_idx + 1].pe_bnum = bnum_right; | |
| 2939 pp->pb_pointer[pb_idx + 1].pe_page_count = page_count_right; | |
| 2940 | |
| 2941 if (lnum_left != 0) | |
| 2942 pp->pb_pointer[pb_idx].pe_old_lnum = lnum_left; | |
| 2943 if (lnum_right != 0) | |
| 2944 pp->pb_pointer[pb_idx + 1].pe_old_lnum = lnum_right; | |
| 2945 | |
| 2946 mf_put(mfp, hp, TRUE, FALSE); | |
| 2947 buf->b_ml.ml_stack_top = stack_idx + 1; /* truncate stack */ | |
| 2948 | |
| 2949 if (lineadd) | |
| 2950 { | |
| 2951 --(buf->b_ml.ml_stack_top); | |
| 1167 | 2952 /* fix line count for rest of blocks in the stack */ |
| 7 | 2953 ml_lineadd(buf, lineadd); |
| 2954 /* fix stack itself */ | |
| 2955 buf->b_ml.ml_stack[buf->b_ml.ml_stack_top].ip_high += | |
| 2956 lineadd; | |
| 2957 ++(buf->b_ml.ml_stack_top); | |
| 2958 } | |
| 2959 | |
| 2960 /* | |
| 2961 * We are finished, break the loop here. | |
| 2962 */ | |
| 2963 break; | |
| 2964 } | |
| 2965 else /* pointer block full */ | |
| 2966 { | |
| 2967 /* | |
| 2968 * split the pointer block | |
| 2969 * allocate a new pointer block | |
| 2970 * move some of the pointer into the new block | |
| 2971 * prepare for updating the parent block | |
| 2972 */ | |
| 2973 for (;;) /* do this twice when splitting block 1 */ | |
| 2974 { | |
| 2975 hp_new = ml_new_ptr(mfp); | |
| 2976 if (hp_new == NULL) /* TODO: try to fix tree */ | |
| 2977 return FAIL; | |
| 2978 pp_new = (PTR_BL *)(hp_new->bh_data); | |
| 2979 | |
| 2980 if (hp->bh_bnum != 1) | |
| 2981 break; | |
| 2982 | |
| 2983 /* | |
| 2984 * if block 1 becomes full the tree is given an extra level | |
| 2985 * The pointers from block 1 are moved into the new block. | |
| 2986 * block 1 is updated to point to the new block | |
| 2987 * then continue to split the new block | |
| 2988 */ | |
| 2989 mch_memmove(pp_new, pp, (size_t)page_size); | |
| 2990 pp->pb_count = 1; | |
| 2991 pp->pb_pointer[0].pe_bnum = hp_new->bh_bnum; | |
| 2992 pp->pb_pointer[0].pe_line_count = buf->b_ml.ml_line_count; | |
| 2993 pp->pb_pointer[0].pe_old_lnum = 1; | |
| 2994 pp->pb_pointer[0].pe_page_count = 1; | |
| 2995 mf_put(mfp, hp, TRUE, FALSE); /* release block 1 */ | |
| 2996 hp = hp_new; /* new block is to be split */ | |
| 2997 pp = pp_new; | |
| 2998 CHECK(stack_idx != 0, _("stack_idx should be 0")); | |
| 2999 ip->ip_index = 0; | |
| 3000 ++stack_idx; /* do block 1 again later */ | |
| 3001 } | |
| 3002 /* | |
| 3003 * move the pointers after the current one to the new block | |
| 3004 * If there are none, the new entry will be in the new block. | |
| 3005 */ | |
| 3006 total_moved = pp->pb_count - pb_idx - 1; | |
| 3007 if (total_moved) | |
| 3008 { | |
| 3009 mch_memmove(&pp_new->pb_pointer[0], | |
| 3010 &pp->pb_pointer[pb_idx + 1], | |
| 3011 (size_t)(total_moved) * sizeof(PTR_EN)); | |
| 3012 pp_new->pb_count = total_moved; | |
| 3013 pp->pb_count -= total_moved - 1; | |
| 3014 pp->pb_pointer[pb_idx + 1].pe_bnum = bnum_right; | |
| 3015 pp->pb_pointer[pb_idx + 1].pe_line_count = line_count_right; | |
| 3016 pp->pb_pointer[pb_idx + 1].pe_page_count = page_count_right; | |
| 3017 if (lnum_right) | |
| 3018 pp->pb_pointer[pb_idx + 1].pe_old_lnum = lnum_right; | |
| 3019 } | |
| 3020 else | |
| 3021 { | |
| 3022 pp_new->pb_count = 1; | |
| 3023 pp_new->pb_pointer[0].pe_bnum = bnum_right; | |
| 3024 pp_new->pb_pointer[0].pe_line_count = line_count_right; | |
| 3025 pp_new->pb_pointer[0].pe_page_count = page_count_right; | |
| 3026 pp_new->pb_pointer[0].pe_old_lnum = lnum_right; | |
| 3027 } | |
| 3028 pp->pb_pointer[pb_idx].pe_bnum = bnum_left; | |
| 3029 pp->pb_pointer[pb_idx].pe_line_count = line_count_left; | |
| 3030 pp->pb_pointer[pb_idx].pe_page_count = page_count_left; | |
| 3031 if (lnum_left) | |
| 3032 pp->pb_pointer[pb_idx].pe_old_lnum = lnum_left; | |
| 3033 lnum_left = 0; | |
| 3034 lnum_right = 0; | |
| 3035 | |
| 3036 /* | |
| 3037 * recompute line counts | |
| 3038 */ | |
| 3039 line_count_right = 0; | |
| 3040 for (i = 0; i < (int)pp_new->pb_count; ++i) | |
| 3041 line_count_right += pp_new->pb_pointer[i].pe_line_count; | |
| 3042 line_count_left = 0; | |
| 3043 for (i = 0; i < (int)pp->pb_count; ++i) | |
| 3044 line_count_left += pp->pb_pointer[i].pe_line_count; | |
| 3045 | |
| 3046 bnum_left = hp->bh_bnum; | |
| 3047 bnum_right = hp_new->bh_bnum; | |
| 3048 page_count_left = 1; | |
| 3049 page_count_right = 1; | |
| 3050 mf_put(mfp, hp, TRUE, FALSE); | |
| 3051 mf_put(mfp, hp_new, TRUE, FALSE); | |
| 3052 } | |
| 3053 } | |
| 3054 | |
| 3055 /* | |
| 3056 * Safety check: fallen out of for loop? | |
| 3057 */ | |
| 3058 if (stack_idx < 0) | |
| 3059 { | |
| 3060 EMSG(_("E318: Updated too many blocks?")); | |
| 3061 buf->b_ml.ml_stack_top = 0; /* invalidate stack */ | |
| 3062 } | |
| 3063 } | |
| 3064 | |
| 3065 #ifdef FEAT_BYTEOFF | |
| 3066 /* The line was inserted below 'lnum' */ | |
| 3067 ml_updatechunk(buf, lnum + 1, (long)len, ML_CHNK_ADDLINE); | |
| 3068 #endif | |
| 3069 #ifdef FEAT_NETBEANS_INTG | |
| 2210 | 3070 if (netbeans_active()) |
| 7 | 3071 { |
| 3072 if (STRLEN(line) > 0) | |
| 835 | 3073 netbeans_inserted(buf, lnum+1, (colnr_T)0, line, (int)STRLEN(line)); |
| 34 | 3074 netbeans_inserted(buf, lnum+1, (colnr_T)STRLEN(line), |
| 7 | 3075 (char_u *)"\n", 1); |
| 3076 } | |
| 3077 #endif | |
| 3078 return OK; | |
| 3079 } | |
| 3080 | |
| 3081 /* | |
| 625 | 3082 * Replace line lnum, with buffering, in current buffer. |
| 7 | 3083 * |
| 720 | 3084 * If "copy" is TRUE, make a copy of the line, otherwise the line has been |
| 7 | 3085 * copied to allocated memory already. |
| 3086 * | |
| 3087 * Check: The caller of this function should probably also call | |
| 3088 * changed_lines(), unless update_screen(NOT_VALID) is used. | |
| 3089 * | |
| 3090 * return FAIL for failure, OK otherwise | |
| 3091 */ | |
| 3092 int | |
|
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3093 ml_replace(linenr_T lnum, char_u *line, int copy) |
| 7 | 3094 { |
| 3095 if (line == NULL) /* just checking... */ | |
| 3096 return FAIL; | |
| 3097 | |
| 3098 /* When starting up, we might still need to create the memfile */ | |
|
2394
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Add the 'undoreload' option to be able to undo a file reload.
Bram Moolenaar <bram@vim.org>
parents:
2360
diff
changeset
|
3099 if (curbuf->b_ml.ml_mfp == NULL && open_buffer(FALSE, NULL, 0) == FAIL) |
| 7 | 3100 return FAIL; |
| 3101 | |
| 3102 if (copy && (line = vim_strsave(line)) == NULL) /* allocate memory */ | |
| 3103 return FAIL; | |
| 3104 #ifdef FEAT_NETBEANS_INTG | |
| 2210 | 3105 if (netbeans_active()) |
| 7 | 3106 { |
| 3107 netbeans_removed(curbuf, lnum, 0, (long)STRLEN(ml_get(lnum))); | |
| 835 | 3108 netbeans_inserted(curbuf, lnum, 0, line, (int)STRLEN(line)); |
| 7 | 3109 } |
| 3110 #endif | |
| 3111 if (curbuf->b_ml.ml_line_lnum != lnum) /* other line buffered */ | |
| 3112 ml_flush_line(curbuf); /* flush it */ | |
| 3113 else if (curbuf->b_ml.ml_flags & ML_LINE_DIRTY) /* same line allocated */ | |
| 3114 vim_free(curbuf->b_ml.ml_line_ptr); /* free it */ | |
| 3115 curbuf->b_ml.ml_line_ptr = line; | |
| 3116 curbuf->b_ml.ml_line_lnum = lnum; | |
| 3117 curbuf->b_ml.ml_flags = (curbuf->b_ml.ml_flags | ML_LINE_DIRTY) & ~ML_EMPTY; | |
| 3118 | |
| 3119 return OK; | |
| 3120 } | |
| 3121 | |
| 3122 /* | |
| 625 | 3123 * Delete line 'lnum' in the current buffer. |
| 7 | 3124 * |
| 3125 * Check: The caller of this function should probably also call | |
| 3126 * deleted_lines() after this. | |
| 3127 * | |
| 3128 * return FAIL for failure, OK otherwise | |
| 3129 */ | |
| 3130 int | |
|
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3131 ml_delete(linenr_T lnum, int message) |
| 7 | 3132 { |
| 3133 ml_flush_line(curbuf); | |
| 3134 return ml_delete_int(curbuf, lnum, message); | |
| 3135 } | |
| 3136 | |
| 3137 static int | |
|
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41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3138 ml_delete_int(buf_T *buf, linenr_T lnum, int message) |
| 7 | 3139 { |
| 3140 bhdr_T *hp; | |
| 3141 memfile_T *mfp; | |
| 3142 DATA_BL *dp; | |
| 3143 PTR_BL *pp; | |
| 3144 infoptr_T *ip; | |
| 3145 int count; /* number of entries in block */ | |
| 3146 int idx; | |
| 3147 int stack_idx; | |
| 3148 int text_start; | |
| 3149 int line_start; | |
| 3150 long line_size; | |
| 3151 int i; | |
| 3152 | |
| 3153 if (lnum < 1 || lnum > buf->b_ml.ml_line_count) | |
| 3154 return FAIL; | |
| 3155 | |
| 3156 if (lowest_marked && lowest_marked > lnum) | |
| 3157 lowest_marked--; | |
| 3158 | |
| 3159 /* | |
| 3160 * If the file becomes empty the last line is replaced by an empty line. | |
| 3161 */ | |
| 3162 if (buf->b_ml.ml_line_count == 1) /* file becomes empty */ | |
| 3163 { | |
| 3164 if (message | |
| 3165 #ifdef FEAT_NETBEANS_INTG | |
| 3166 && !netbeansSuppressNoLines | |
| 3167 #endif | |
| 3168 ) | |
| 680 | 3169 set_keep_msg((char_u *)_(no_lines_msg), 0); |
| 3170 | |
| 4352 | 3171 /* FEAT_BYTEOFF already handled in there, don't worry 'bout it below */ |
| 7 | 3172 i = ml_replace((linenr_T)1, (char_u *)"", TRUE); |
| 3173 buf->b_ml.ml_flags |= ML_EMPTY; | |
| 3174 | |
| 3175 return i; | |
| 3176 } | |
| 3177 | |
| 3178 /* | |
| 3179 * find the data block containing the line | |
| 3180 * This also fills the stack with the blocks from the root to the data block | |
| 3181 * This also releases any locked block. | |
| 3182 */ | |
| 3183 mfp = buf->b_ml.ml_mfp; | |
| 3184 if (mfp == NULL) | |
| 3185 return FAIL; | |
| 3186 | |
| 3187 if ((hp = ml_find_line(buf, lnum, ML_DELETE)) == NULL) | |
| 3188 return FAIL; | |
| 3189 | |
| 3190 dp = (DATA_BL *)(hp->bh_data); | |
| 3191 /* compute line count before the delete */ | |
| 3192 count = (long)(buf->b_ml.ml_locked_high) | |
| 3193 - (long)(buf->b_ml.ml_locked_low) + 2; | |
| 3194 idx = lnum - buf->b_ml.ml_locked_low; | |
| 3195 | |
| 3196 --buf->b_ml.ml_line_count; | |
| 3197 | |
| 3198 line_start = ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 3199 if (idx == 0) /* first line in block, text at the end */ | |
| 3200 line_size = dp->db_txt_end - line_start; | |
| 3201 else | |
| 3202 line_size = ((dp->db_index[idx - 1]) & DB_INDEX_MASK) - line_start; | |
| 3203 | |
| 3204 #ifdef FEAT_NETBEANS_INTG | |
| 2210 | 3205 if (netbeans_active()) |
| 34 | 3206 netbeans_removed(buf, lnum, 0, (long)line_size); |
| 7 | 3207 #endif |
| 3208 | |
| 3209 /* | |
| 3210 * special case: If there is only one line in the data block it becomes empty. | |
| 3211 * Then we have to remove the entry, pointing to this data block, from the | |
| 3212 * pointer block. If this pointer block also becomes empty, we go up another | |
| 3213 * block, and so on, up to the root if necessary. | |
| 3214 * The line counts in the pointer blocks have already been adjusted by | |
| 3215 * ml_find_line(). | |
| 3216 */ | |
| 3217 if (count == 1) | |
| 3218 { | |
| 3219 mf_free(mfp, hp); /* free the data block */ | |
| 3220 buf->b_ml.ml_locked = NULL; | |
| 3221 | |
| 2823 | 3222 for (stack_idx = buf->b_ml.ml_stack_top - 1; stack_idx >= 0; |
| 3223 --stack_idx) | |
| 7 | 3224 { |
| 3225 buf->b_ml.ml_stack_top = 0; /* stack is invalid when failing */ | |
| 3226 ip = &(buf->b_ml.ml_stack[stack_idx]); | |
| 3227 idx = ip->ip_index; | |
| 3228 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
| 3229 return FAIL; | |
| 3230 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
| 3231 if (pp->pb_id != PTR_ID) | |
| 3232 { | |
| 3233 EMSG(_("E317: pointer block id wrong 4")); | |
| 3234 mf_put(mfp, hp, FALSE, FALSE); | |
| 3235 return FAIL; | |
| 3236 } | |
| 3237 count = --(pp->pb_count); | |
| 3238 if (count == 0) /* the pointer block becomes empty! */ | |
| 3239 mf_free(mfp, hp); | |
| 3240 else | |
| 3241 { | |
| 3242 if (count != idx) /* move entries after the deleted one */ | |
| 3243 mch_memmove(&pp->pb_pointer[idx], &pp->pb_pointer[idx + 1], | |
| 3244 (size_t)(count - idx) * sizeof(PTR_EN)); | |
| 3245 mf_put(mfp, hp, TRUE, FALSE); | |
| 3246 | |
| 3247 buf->b_ml.ml_stack_top = stack_idx; /* truncate stack */ | |
| 1167 | 3248 /* fix line count for rest of blocks in the stack */ |
| 3249 if (buf->b_ml.ml_locked_lineadd != 0) | |
| 7 | 3250 { |
| 3251 ml_lineadd(buf, buf->b_ml.ml_locked_lineadd); | |
| 3252 buf->b_ml.ml_stack[buf->b_ml.ml_stack_top].ip_high += | |
| 1167 | 3253 buf->b_ml.ml_locked_lineadd; |
| 7 | 3254 } |
| 3255 ++(buf->b_ml.ml_stack_top); | |
| 3256 | |
| 3257 break; | |
| 3258 } | |
| 3259 } | |
| 3260 CHECK(stack_idx < 0, _("deleted block 1?")); | |
| 3261 } | |
| 3262 else | |
| 3263 { | |
| 3264 /* | |
| 3265 * delete the text by moving the next lines forwards | |
| 3266 */ | |
| 3267 text_start = dp->db_txt_start; | |
| 3268 mch_memmove((char *)dp + text_start + line_size, | |
| 3269 (char *)dp + text_start, (size_t)(line_start - text_start)); | |
| 3270 | |
| 3271 /* | |
| 3272 * delete the index by moving the next indexes backwards | |
| 3273 * Adjust the indexes for the text movement. | |
| 3274 */ | |
| 3275 for (i = idx; i < count - 1; ++i) | |
| 3276 dp->db_index[i] = dp->db_index[i + 1] + line_size; | |
| 3277 | |
| 3278 dp->db_free += line_size + INDEX_SIZE; | |
| 3279 dp->db_txt_start += line_size; | |
| 3280 --(dp->db_line_count); | |
| 3281 | |
| 3282 /* | |
| 3283 * mark the block dirty and make sure it is in the file (for recovery) | |
| 3284 */ | |
| 3285 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 3286 } | |
| 3287 | |
| 3288 #ifdef FEAT_BYTEOFF | |
| 3289 ml_updatechunk(buf, lnum, line_size, ML_CHNK_DELLINE); | |
| 3290 #endif | |
| 3291 return OK; | |
| 3292 } | |
| 3293 | |
| 3294 /* | |
| 3295 * set the B_MARKED flag for line 'lnum' | |
| 3296 */ | |
| 3297 void | |
|
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3298 ml_setmarked(linenr_T lnum) |
| 7 | 3299 { |
| 3300 bhdr_T *hp; | |
| 3301 DATA_BL *dp; | |
| 3302 /* invalid line number */ | |
| 3303 if (lnum < 1 || lnum > curbuf->b_ml.ml_line_count | |
| 3304 || curbuf->b_ml.ml_mfp == NULL) | |
| 3305 return; /* give error message? */ | |
| 3306 | |
| 3307 if (lowest_marked == 0 || lowest_marked > lnum) | |
| 3308 lowest_marked = lnum; | |
| 3309 | |
| 3310 /* | |
| 3311 * find the data block containing the line | |
| 3312 * This also fills the stack with the blocks from the root to the data block | |
| 3313 * This also releases any locked block. | |
| 3314 */ | |
| 3315 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
| 3316 return; /* give error message? */ | |
| 3317 | |
| 3318 dp = (DATA_BL *)(hp->bh_data); | |
| 3319 dp->db_index[lnum - curbuf->b_ml.ml_locked_low] |= DB_MARKED; | |
| 3320 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 3321 } | |
| 3322 | |
| 3323 /* | |
| 3324 * find the first line with its B_MARKED flag set | |
| 3325 */ | |
| 3326 linenr_T | |
|
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parents:
7803
diff
changeset
|
3327 ml_firstmarked(void) |
| 7 | 3328 { |
| 3329 bhdr_T *hp; | |
| 3330 DATA_BL *dp; | |
| 3331 linenr_T lnum; | |
| 3332 int i; | |
| 3333 | |
| 3334 if (curbuf->b_ml.ml_mfp == NULL) | |
| 3335 return (linenr_T) 0; | |
| 3336 | |
| 3337 /* | |
| 3338 * The search starts with lowest_marked line. This is the last line where | |
| 3339 * a mark was found, adjusted by inserting/deleting lines. | |
| 3340 */ | |
| 3341 for (lnum = lowest_marked; lnum <= curbuf->b_ml.ml_line_count; ) | |
| 3342 { | |
| 3343 /* | |
| 3344 * Find the data block containing the line. | |
| 3345 * This also fills the stack with the blocks from the root to the data | |
| 3346 * block This also releases any locked block. | |
| 3347 */ | |
| 3348 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
| 3349 return (linenr_T)0; /* give error message? */ | |
| 3350 | |
| 3351 dp = (DATA_BL *)(hp->bh_data); | |
| 3352 | |
| 3353 for (i = lnum - curbuf->b_ml.ml_locked_low; | |
| 3354 lnum <= curbuf->b_ml.ml_locked_high; ++i, ++lnum) | |
| 3355 if ((dp->db_index[i]) & DB_MARKED) | |
| 3356 { | |
| 3357 (dp->db_index[i]) &= DB_INDEX_MASK; | |
| 3358 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 3359 lowest_marked = lnum + 1; | |
| 3360 return lnum; | |
| 3361 } | |
| 3362 } | |
| 3363 | |
| 3364 return (linenr_T) 0; | |
| 3365 } | |
| 3366 | |
| 3367 /* | |
| 3368 * clear all DB_MARKED flags | |
| 3369 */ | |
| 3370 void | |
|
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parents:
7803
diff
changeset
|
3371 ml_clearmarked(void) |
| 7 | 3372 { |
| 3373 bhdr_T *hp; | |
| 3374 DATA_BL *dp; | |
| 3375 linenr_T lnum; | |
| 3376 int i; | |
| 3377 | |
| 3378 if (curbuf->b_ml.ml_mfp == NULL) /* nothing to do */ | |
| 3379 return; | |
| 3380 | |
| 3381 /* | |
| 3382 * The search starts with line lowest_marked. | |
| 3383 */ | |
| 3384 for (lnum = lowest_marked; lnum <= curbuf->b_ml.ml_line_count; ) | |
| 3385 { | |
| 3386 /* | |
| 3387 * Find the data block containing the line. | |
| 3388 * This also fills the stack with the blocks from the root to the data | |
| 3389 * block and releases any locked block. | |
| 3390 */ | |
| 3391 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL) | |
| 3392 return; /* give error message? */ | |
| 3393 | |
| 3394 dp = (DATA_BL *)(hp->bh_data); | |
| 3395 | |
| 3396 for (i = lnum - curbuf->b_ml.ml_locked_low; | |
| 3397 lnum <= curbuf->b_ml.ml_locked_high; ++i, ++lnum) | |
| 3398 if ((dp->db_index[i]) & DB_MARKED) | |
| 3399 { | |
| 3400 (dp->db_index[i]) &= DB_INDEX_MASK; | |
| 3401 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY; | |
| 3402 } | |
| 3403 } | |
| 3404 | |
| 3405 lowest_marked = 0; | |
| 3406 return; | |
| 3407 } | |
| 3408 | |
| 3409 /* | |
| 3410 * flush ml_line if necessary | |
| 3411 */ | |
| 3412 static void | |
|
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parents:
7803
diff
changeset
|
3413 ml_flush_line(buf_T *buf) |
| 7 | 3414 { |
| 3415 bhdr_T *hp; | |
| 3416 DATA_BL *dp; | |
| 3417 linenr_T lnum; | |
| 3418 char_u *new_line; | |
| 3419 char_u *old_line; | |
| 3420 colnr_T new_len; | |
| 3421 int old_len; | |
| 3422 int extra; | |
| 3423 int idx; | |
| 3424 int start; | |
| 3425 int count; | |
| 3426 int i; | |
|
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diff
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|
3427 static int entered = FALSE; |
| 7 | 3428 |
| 3429 if (buf->b_ml.ml_line_lnum == 0 || buf->b_ml.ml_mfp == NULL) | |
| 3430 return; /* nothing to do */ | |
| 3431 | |
| 3432 if (buf->b_ml.ml_flags & ML_LINE_DIRTY) | |
| 3433 { | |
|
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diff
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|
3434 /* This code doesn't work recursively, but Netbeans may call back here |
|
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|
3435 * when obtaining the cursor position. */ |
|
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|
3436 if (entered) |
|
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diff
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|
3437 return; |
|
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diff
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|
3438 entered = TRUE; |
|
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diff
changeset
|
3439 |
| 7 | 3440 lnum = buf->b_ml.ml_line_lnum; |
| 3441 new_line = buf->b_ml.ml_line_ptr; | |
| 3442 | |
| 3443 hp = ml_find_line(buf, lnum, ML_FIND); | |
| 3444 if (hp == NULL) | |
| 3445 EMSGN(_("E320: Cannot find line %ld"), lnum); | |
| 3446 else | |
| 3447 { | |
| 3448 dp = (DATA_BL *)(hp->bh_data); | |
| 3449 idx = lnum - buf->b_ml.ml_locked_low; | |
| 3450 start = ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 3451 old_line = (char_u *)dp + start; | |
| 3452 if (idx == 0) /* line is last in block */ | |
| 3453 old_len = dp->db_txt_end - start; | |
| 3454 else /* text of previous line follows */ | |
| 3455 old_len = (dp->db_index[idx - 1] & DB_INDEX_MASK) - start; | |
| 3456 new_len = (colnr_T)STRLEN(new_line) + 1; | |
| 3457 extra = new_len - old_len; /* negative if lines gets smaller */ | |
| 3458 | |
| 3459 /* | |
| 3460 * if new line fits in data block, replace directly | |
| 3461 */ | |
| 3462 if ((int)dp->db_free >= extra) | |
| 3463 { | |
| 3464 /* if the length changes and there are following lines */ | |
| 3465 count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low + 1; | |
| 3466 if (extra != 0 && idx < count - 1) | |
| 3467 { | |
| 3468 /* move text of following lines */ | |
| 3469 mch_memmove((char *)dp + dp->db_txt_start - extra, | |
| 3470 (char *)dp + dp->db_txt_start, | |
| 3471 (size_t)(start - dp->db_txt_start)); | |
| 3472 | |
| 3473 /* adjust pointers of this and following lines */ | |
| 3474 for (i = idx + 1; i < count; ++i) | |
| 3475 dp->db_index[i] -= extra; | |
| 3476 } | |
| 3477 dp->db_index[idx] -= extra; | |
| 3478 | |
| 3479 /* adjust free space */ | |
| 3480 dp->db_free -= extra; | |
| 3481 dp->db_txt_start -= extra; | |
| 3482 | |
| 3483 /* copy new line into the data block */ | |
| 3484 mch_memmove(old_line - extra, new_line, (size_t)new_len); | |
| 3485 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 3486 #ifdef FEAT_BYTEOFF | |
| 3487 /* The else case is already covered by the insert and delete */ | |
| 3488 ml_updatechunk(buf, lnum, (long)extra, ML_CHNK_UPDLINE); | |
| 3489 #endif | |
| 3490 } | |
| 3491 else | |
| 3492 { | |
| 3493 /* | |
| 3494 * Cannot do it in one data block: Delete and append. | |
| 3495 * Append first, because ml_delete_int() cannot delete the | |
| 3496 * last line in a buffer, which causes trouble for a buffer | |
| 3497 * that has only one line. | |
| 3498 * Don't forget to copy the mark! | |
| 3499 */ | |
| 3500 /* How about handling errors??? */ | |
| 3501 (void)ml_append_int(buf, lnum, new_line, new_len, FALSE, | |
| 3502 (dp->db_index[idx] & DB_MARKED)); | |
| 3503 (void)ml_delete_int(buf, lnum, FALSE); | |
| 3504 } | |
| 3505 } | |
| 3506 vim_free(new_line); | |
|
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|
3507 |
|
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|
3508 entered = FALSE; |
| 7 | 3509 } |
| 3510 | |
| 3511 buf->b_ml.ml_line_lnum = 0; | |
| 3512 } | |
| 3513 | |
| 3514 /* | |
| 3515 * create a new, empty, data block | |
| 3516 */ | |
| 3517 static bhdr_T * | |
|
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parents:
7803
diff
changeset
|
3518 ml_new_data(memfile_T *mfp, int negative, int page_count) |
| 7 | 3519 { |
| 3520 bhdr_T *hp; | |
| 3521 DATA_BL *dp; | |
| 3522 | |
| 3523 if ((hp = mf_new(mfp, negative, page_count)) == NULL) | |
| 3524 return NULL; | |
| 3525 | |
| 3526 dp = (DATA_BL *)(hp->bh_data); | |
| 3527 dp->db_id = DATA_ID; | |
| 3528 dp->db_txt_start = dp->db_txt_end = page_count * mfp->mf_page_size; | |
| 3529 dp->db_free = dp->db_txt_start - HEADER_SIZE; | |
| 3530 dp->db_line_count = 0; | |
| 3531 | |
| 3532 return hp; | |
| 3533 } | |
| 3534 | |
| 3535 /* | |
| 3536 * create a new, empty, pointer block | |
| 3537 */ | |
| 3538 static bhdr_T * | |
|
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parents:
7803
diff
changeset
|
3539 ml_new_ptr(memfile_T *mfp) |
| 7 | 3540 { |
| 3541 bhdr_T *hp; | |
| 3542 PTR_BL *pp; | |
| 3543 | |
| 3544 if ((hp = mf_new(mfp, FALSE, 1)) == NULL) | |
| 3545 return NULL; | |
| 3546 | |
| 3547 pp = (PTR_BL *)(hp->bh_data); | |
| 3548 pp->pb_id = PTR_ID; | |
| 3549 pp->pb_count = 0; | |
|
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Bram Moolenaar <bram@vim.org>
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2221
diff
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|
3550 pp->pb_count_max = (short_u)((mfp->mf_page_size - sizeof(PTR_BL)) |
|
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diff
changeset
|
3551 / sizeof(PTR_EN) + 1); |
| 7 | 3552 |
| 3553 return hp; | |
| 3554 } | |
| 3555 | |
| 3556 /* | |
| 3557 * lookup line 'lnum' in a memline | |
| 3558 * | |
| 3559 * action: if ML_DELETE or ML_INSERT the line count is updated while searching | |
| 3560 * if ML_FLUSH only flush a locked block | |
| 3561 * if ML_FIND just find the line | |
| 3562 * | |
| 3563 * If the block was found it is locked and put in ml_locked. | |
| 3564 * The stack is updated to lead to the locked block. The ip_high field in | |
| 3565 * the stack is updated to reflect the last line in the block AFTER the | |
| 3566 * insert or delete, also if the pointer block has not been updated yet. But | |
| 1167 | 3567 * if ml_locked != NULL ml_locked_lineadd must be added to ip_high. |
| 7 | 3568 * |
| 3569 * return: NULL for failure, pointer to block header otherwise | |
| 3570 */ | |
| 3571 static bhdr_T * | |
|
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
3572 ml_find_line(buf_T *buf, linenr_T lnum, int action) |
| 7 | 3573 { |
| 3574 DATA_BL *dp; | |
| 3575 PTR_BL *pp; | |
| 3576 infoptr_T *ip; | |
| 3577 bhdr_T *hp; | |
| 3578 memfile_T *mfp; | |
| 3579 linenr_T t; | |
| 3580 blocknr_T bnum, bnum2; | |
| 3581 int dirty; | |
| 3582 linenr_T low, high; | |
| 3583 int top; | |
| 3584 int page_count; | |
| 3585 int idx; | |
| 3586 | |
| 3587 mfp = buf->b_ml.ml_mfp; | |
| 3588 | |
| 3589 /* | |
| 3590 * If there is a locked block check if the wanted line is in it. | |
| 3591 * If not, flush and release the locked block. | |
| 3592 * Don't do this for ML_INSERT_SAME, because the stack need to be updated. | |
| 3593 * Don't do this for ML_FLUSH, because we want to flush the locked block. | |
| 1066 | 3594 * Don't do this when 'swapfile' is reset, we want to load all the blocks. |
| 7 | 3595 */ |
| 3596 if (buf->b_ml.ml_locked) | |
| 3597 { | |
| 1066 | 3598 if (ML_SIMPLE(action) |
| 3599 && buf->b_ml.ml_locked_low <= lnum | |
| 3600 && buf->b_ml.ml_locked_high >= lnum | |
| 3601 && !mf_dont_release) | |
| 7 | 3602 { |
| 1066 | 3603 /* remember to update pointer blocks and stack later */ |
| 7 | 3604 if (action == ML_INSERT) |
| 3605 { | |
| 3606 ++(buf->b_ml.ml_locked_lineadd); | |
| 3607 ++(buf->b_ml.ml_locked_high); | |
| 3608 } | |
| 3609 else if (action == ML_DELETE) | |
| 3610 { | |
| 3611 --(buf->b_ml.ml_locked_lineadd); | |
| 3612 --(buf->b_ml.ml_locked_high); | |
| 3613 } | |
| 3614 return (buf->b_ml.ml_locked); | |
| 3615 } | |
| 3616 | |
| 3617 mf_put(mfp, buf->b_ml.ml_locked, buf->b_ml.ml_flags & ML_LOCKED_DIRTY, | |
| 3618 buf->b_ml.ml_flags & ML_LOCKED_POS); | |
| 3619 buf->b_ml.ml_locked = NULL; | |
| 3620 | |
| 1167 | 3621 /* |
| 3622 * If lines have been added or deleted in the locked block, need to | |
| 3623 * update the line count in pointer blocks. | |
| 3624 */ | |
| 3625 if (buf->b_ml.ml_locked_lineadd != 0) | |
| 7 | 3626 ml_lineadd(buf, buf->b_ml.ml_locked_lineadd); |
| 3627 } | |
| 3628 | |
| 3629 if (action == ML_FLUSH) /* nothing else to do */ | |
| 3630 return NULL; | |
| 3631 | |
| 3632 bnum = 1; /* start at the root of the tree */ | |
| 3633 page_count = 1; | |
| 3634 low = 1; | |
| 3635 high = buf->b_ml.ml_line_count; | |
| 3636 | |
| 3637 if (action == ML_FIND) /* first try stack entries */ | |
| 3638 { | |
| 3639 for (top = buf->b_ml.ml_stack_top - 1; top >= 0; --top) | |
| 3640 { | |
| 3641 ip = &(buf->b_ml.ml_stack[top]); | |
| 3642 if (ip->ip_low <= lnum && ip->ip_high >= lnum) | |
| 3643 { | |
| 3644 bnum = ip->ip_bnum; | |
| 3645 low = ip->ip_low; | |
| 3646 high = ip->ip_high; | |
| 3647 buf->b_ml.ml_stack_top = top; /* truncate stack at prev entry */ | |
| 3648 break; | |
| 3649 } | |
| 3650 } | |
| 3651 if (top < 0) | |
| 3652 buf->b_ml.ml_stack_top = 0; /* not found, start at the root */ | |
| 3653 } | |
| 3654 else /* ML_DELETE or ML_INSERT */ | |
| 3655 buf->b_ml.ml_stack_top = 0; /* start at the root */ | |
| 3656 | |
| 3657 /* | |
| 3658 * search downwards in the tree until a data block is found | |
| 3659 */ | |
| 3660 for (;;) | |
| 3661 { | |
| 3662 if ((hp = mf_get(mfp, bnum, page_count)) == NULL) | |
| 3663 goto error_noblock; | |
| 3664 | |
| 3665 /* | |
| 3666 * update high for insert/delete | |
| 3667 */ | |
| 3668 if (action == ML_INSERT) | |
| 3669 ++high; | |
| 3670 else if (action == ML_DELETE) | |
| 3671 --high; | |
| 3672 | |
| 3673 dp = (DATA_BL *)(hp->bh_data); | |
| 3674 if (dp->db_id == DATA_ID) /* data block */ | |
| 3675 { | |
| 3676 buf->b_ml.ml_locked = hp; | |
| 3677 buf->b_ml.ml_locked_low = low; | |
| 3678 buf->b_ml.ml_locked_high = high; | |
| 3679 buf->b_ml.ml_locked_lineadd = 0; | |
| 3680 buf->b_ml.ml_flags &= ~(ML_LOCKED_DIRTY | ML_LOCKED_POS); | |
| 3681 return hp; | |
| 3682 } | |
| 3683 | |
| 3684 pp = (PTR_BL *)(dp); /* must be pointer block */ | |
| 3685 if (pp->pb_id != PTR_ID) | |
| 3686 { | |
| 3687 EMSG(_("E317: pointer block id wrong")); | |
| 3688 goto error_block; | |
| 3689 } | |
| 3690 | |
| 3691 if ((top = ml_add_stack(buf)) < 0) /* add new entry to stack */ | |
| 3692 goto error_block; | |
| 3693 ip = &(buf->b_ml.ml_stack[top]); | |
| 3694 ip->ip_bnum = bnum; | |
| 3695 ip->ip_low = low; | |
| 3696 ip->ip_high = high; | |
| 3697 ip->ip_index = -1; /* index not known yet */ | |
| 3698 | |
| 3699 dirty = FALSE; | |
| 3700 for (idx = 0; idx < (int)pp->pb_count; ++idx) | |
| 3701 { | |
| 3702 t = pp->pb_pointer[idx].pe_line_count; | |
| 3703 CHECK(t == 0, _("pe_line_count is zero")); | |
| 3704 if ((low += t) > lnum) | |
| 3705 { | |
| 3706 ip->ip_index = idx; | |
| 3707 bnum = pp->pb_pointer[idx].pe_bnum; | |
| 3708 page_count = pp->pb_pointer[idx].pe_page_count; | |
| 3709 high = low - 1; | |
| 3710 low -= t; | |
| 3711 | |
| 3712 /* | |
| 3713 * a negative block number may have been changed | |
| 3714 */ | |
| 3715 if (bnum < 0) | |
| 3716 { | |
| 3717 bnum2 = mf_trans_del(mfp, bnum); | |
| 3718 if (bnum != bnum2) | |
| 3719 { | |
| 3720 bnum = bnum2; | |
| 3721 pp->pb_pointer[idx].pe_bnum = bnum; | |
| 3722 dirty = TRUE; | |
| 3723 } | |
| 3724 } | |
| 3725 | |
| 3726 break; | |
| 3727 } | |
| 3728 } | |
| 3729 if (idx >= (int)pp->pb_count) /* past the end: something wrong! */ | |
| 3730 { | |
| 3731 if (lnum > buf->b_ml.ml_line_count) | |
| 3732 EMSGN(_("E322: line number out of range: %ld past the end"), | |
| 3733 lnum - buf->b_ml.ml_line_count); | |
| 3734 | |
| 3735 else | |
| 3736 EMSGN(_("E323: line count wrong in block %ld"), bnum); | |
| 3737 goto error_block; | |
| 3738 } | |
| 3739 if (action == ML_DELETE) | |
| 3740 { | |
| 3741 pp->pb_pointer[idx].pe_line_count--; | |
| 3742 dirty = TRUE; | |
| 3743 } | |
| 3744 else if (action == ML_INSERT) | |
| 3745 { | |
| 3746 pp->pb_pointer[idx].pe_line_count++; | |
| 3747 dirty = TRUE; | |
| 3748 } | |
| 3749 mf_put(mfp, hp, dirty, FALSE); | |
| 3750 } | |
| 3751 | |
| 3752 error_block: | |
| 3753 mf_put(mfp, hp, FALSE, FALSE); | |
| 3754 error_noblock: | |
| 2267 | 3755 /* |
| 3756 * If action is ML_DELETE or ML_INSERT we have to correct the tree for | |
| 3757 * the incremented/decremented line counts, because there won't be a line | |
| 3758 * inserted/deleted after all. | |
| 3759 */ | |
| 7 | 3760 if (action == ML_DELETE) |
| 3761 ml_lineadd(buf, 1); | |
| 3762 else if (action == ML_INSERT) | |
| 3763 ml_lineadd(buf, -1); | |
| 3764 buf->b_ml.ml_stack_top = 0; | |
| 3765 return NULL; | |
| 3766 } | |
| 3767 | |
| 3768 /* | |
| 3769 * add an entry to the info pointer stack | |
| 3770 * | |
| 3771 * return -1 for failure, number of the new entry otherwise | |
| 3772 */ | |
| 3773 static int | |
|
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7803
diff
changeset
|
3774 ml_add_stack(buf_T *buf) |
| 7 | 3775 { |
| 3776 int top; | |
| 3777 infoptr_T *newstack; | |
| 3778 | |
| 3779 top = buf->b_ml.ml_stack_top; | |
| 3780 | |
| 2267 | 3781 /* may have to increase the stack size */ |
| 7 | 3782 if (top == buf->b_ml.ml_stack_size) |
| 3783 { | |
| 2267 | 3784 CHECK(top > 0, _("Stack size increases")); /* more than 5 levels??? */ |
| 7 | 3785 |
| 3786 newstack = (infoptr_T *)alloc((unsigned)sizeof(infoptr_T) * | |
| 3787 (buf->b_ml.ml_stack_size + STACK_INCR)); | |
| 3788 if (newstack == NULL) | |
| 3789 return -1; | |
| 6989 | 3790 if (top > 0) |
| 3791 mch_memmove(newstack, buf->b_ml.ml_stack, | |
| 1624 | 3792 (size_t)top * sizeof(infoptr_T)); |
| 7 | 3793 vim_free(buf->b_ml.ml_stack); |
| 3794 buf->b_ml.ml_stack = newstack; | |
| 3795 buf->b_ml.ml_stack_size += STACK_INCR; | |
| 3796 } | |
| 3797 | |
| 3798 buf->b_ml.ml_stack_top++; | |
| 3799 return top; | |
| 3800 } | |
| 3801 | |
| 3802 /* | |
| 3803 * Update the pointer blocks on the stack for inserted/deleted lines. | |
| 3804 * The stack itself is also updated. | |
| 3805 * | |
| 3806 * When a insert/delete line action fails, the line is not inserted/deleted, | |
| 3807 * but the pointer blocks have already been updated. That is fixed here by | |
| 3808 * walking through the stack. | |
| 3809 * | |
| 3810 * Count is the number of lines added, negative if lines have been deleted. | |
| 3811 */ | |
| 3812 static void | |
|
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parents:
7803
diff
changeset
|
3813 ml_lineadd(buf_T *buf, int count) |
| 7 | 3814 { |
| 3815 int idx; | |
| 3816 infoptr_T *ip; | |
| 3817 PTR_BL *pp; | |
| 3818 memfile_T *mfp = buf->b_ml.ml_mfp; | |
| 3819 bhdr_T *hp; | |
| 3820 | |
| 3821 for (idx = buf->b_ml.ml_stack_top - 1; idx >= 0; --idx) | |
| 3822 { | |
| 3823 ip = &(buf->b_ml.ml_stack[idx]); | |
| 3824 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL) | |
| 3825 break; | |
| 3826 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */ | |
| 3827 if (pp->pb_id != PTR_ID) | |
| 3828 { | |
| 3829 mf_put(mfp, hp, FALSE, FALSE); | |
| 3830 EMSG(_("E317: pointer block id wrong 2")); | |
| 3831 break; | |
| 3832 } | |
| 3833 pp->pb_pointer[ip->ip_index].pe_line_count += count; | |
| 3834 ip->ip_high += count; | |
| 3835 mf_put(mfp, hp, TRUE, FALSE); | |
| 3836 } | |
| 3837 } | |
| 3838 | |
|
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diff
changeset
|
3839 #if defined(HAVE_READLINK) || defined(PROTO) |
| 594 | 3840 /* |
| 3841 * Resolve a symlink in the last component of a file name. | |
| 3842 * Note that f_resolve() does it for every part of the path, we don't do that | |
| 3843 * here. | |
| 3844 * If it worked returns OK and the resolved link in "buf[MAXPATHL]". | |
| 3845 * Otherwise returns FAIL. | |
| 3846 */ | |
|
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|
3847 int |
|
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diff
changeset
|
3848 resolve_symlink(char_u *fname, char_u *buf) |
| 594 | 3849 { |
| 3850 char_u tmp[MAXPATHL]; | |
| 3851 int ret; | |
| 3852 int depth = 0; | |
| 3853 | |
| 3854 if (fname == NULL) | |
| 3855 return FAIL; | |
| 3856 | |
| 3857 /* Put the result so far in tmp[], starting with the original name. */ | |
| 3858 vim_strncpy(tmp, fname, MAXPATHL - 1); | |
| 3859 | |
| 3860 for (;;) | |
| 3861 { | |
| 3862 /* Limit symlink depth to 100, catch recursive loops. */ | |
| 3863 if (++depth == 100) | |
| 3864 { | |
| 3865 EMSG2(_("E773: Symlink loop for \"%s\""), fname); | |
| 3866 return FAIL; | |
| 3867 } | |
| 3868 | |
| 3869 ret = readlink((char *)tmp, (char *)buf, MAXPATHL - 1); | |
| 3870 if (ret <= 0) | |
| 3871 { | |
| 619 | 3872 if (errno == EINVAL || errno == ENOENT) |
| 594 | 3873 { |
| 619 | 3874 /* Found non-symlink or not existing file, stop here. |
| 1855 | 3875 * When at the first level use the unmodified name, skip the |
| 594 | 3876 * call to vim_FullName(). */ |
| 3877 if (depth == 1) | |
| 3878 return FAIL; | |
| 3879 | |
| 3880 /* Use the resolved name in tmp[]. */ | |
| 3881 break; | |
| 3882 } | |
| 3883 | |
| 3884 /* There must be some error reading links, use original name. */ | |
| 3885 return FAIL; | |
| 3886 } | |
| 3887 buf[ret] = NUL; | |
| 3888 | |
| 3889 /* | |
| 3890 * Check whether the symlink is relative or absolute. | |
| 3891 * If it's relative, build a new path based on the directory | |
| 3892 * portion of the filename (if any) and the path the symlink | |
| 3893 * points to. | |
| 3894 */ | |
| 3895 if (mch_isFullName(buf)) | |
| 3896 STRCPY(tmp, buf); | |
| 3897 else | |
| 3898 { | |
| 3899 char_u *tail; | |
| 3900 | |
| 3901 tail = gettail(tmp); | |
| 3902 if (STRLEN(tail) + STRLEN(buf) >= MAXPATHL) | |
| 3903 return FAIL; | |
| 3904 STRCPY(tail, buf); | |
| 3905 } | |
| 3906 } | |
| 3907 | |
| 3908 /* | |
| 3909 * Try to resolve the full name of the file so that the swapfile name will | |
| 3910 * be consistent even when opening a relative symlink from different | |
| 3911 * working directories. | |
| 3912 */ | |
| 3913 return vim_FullName(tmp, buf, MAXPATHL, TRUE); | |
| 3914 } | |
| 3915 #endif | |
| 3916 | |
| 7 | 3917 /* |
| 460 | 3918 * Make swap file name out of the file name and a directory name. |
| 3919 * Returns pointer to allocated memory or NULL. | |
| 7 | 3920 */ |
| 460 | 3921 char_u * |
|
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diff
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|
3922 makeswapname( |
|
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|
3923 char_u *fname, |
|
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diff
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|
3924 char_u *ffname UNUSED, |
|
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diff
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|
3925 buf_T *buf, |
|
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parents:
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diff
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|
3926 char_u *dir_name) |
| 7 | 3927 { |
| 3928 char_u *r, *s; | |
|
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|
3929 char_u *fname_res = fname; |
| 594 | 3930 #ifdef HAVE_READLINK |
| 3931 char_u fname_buf[MAXPATHL]; | |
| 3932 #endif | |
| 7 | 3933 |
| 3934 #if defined(UNIX) || defined(WIN3264) /* Need _very_ long file names */ | |
| 3935 s = dir_name + STRLEN(dir_name); | |
| 39 | 3936 if (after_pathsep(dir_name, s) && s[-1] == s[-2]) |
| 7 | 3937 { /* Ends with '//', Use Full path */ |
| 3938 r = NULL; | |
| 460 | 3939 if ((s = make_percent_swname(dir_name, fname)) != NULL) |
| 7 | 3940 { |
| 3941 r = modname(s, (char_u *)".swp", FALSE); | |
| 3942 vim_free(s); | |
| 3943 } | |
| 3944 return r; | |
| 3945 } | |
| 3946 #endif | |
| 3947 | |
| 594 | 3948 #ifdef HAVE_READLINK |
| 3949 /* Expand symlink in the file name, so that we put the swap file with the | |
| 3950 * actual file instead of with the symlink. */ | |
| 3951 if (resolve_symlink(fname, fname_buf) == OK) | |
| 3952 fname_res = fname_buf; | |
| 3953 #endif | |
| 3954 | |
| 7 | 3955 r = buf_modname( |
| 3956 #ifdef SHORT_FNAME | |
| 3957 TRUE, | |
| 3958 #else | |
| 3959 (buf->b_p_sn || buf->b_shortname), | |
| 3960 #endif | |
| 594 | 3961 fname_res, |
| 7 | 3962 (char_u *) |
| 2823 | 3963 #if defined(VMS) |
| 7 | 3964 "_swp", |
| 3965 #else | |
| 3966 ".swp", | |
| 3967 #endif | |
| 3968 #ifdef SHORT_FNAME /* always 8.3 file name */ | |
| 3969 FALSE | |
| 3970 #else | |
| 3971 /* Prepend a '.' to the swap file name for the current directory. */ | |
| 3972 dir_name[0] == '.' && dir_name[1] == NUL | |
| 3973 #endif | |
| 3974 ); | |
| 3975 if (r == NULL) /* out of memory */ | |
| 3976 return NULL; | |
| 3977 | |
| 3978 s = get_file_in_dir(r, dir_name); | |
| 3979 vim_free(r); | |
| 3980 return s; | |
| 3981 } | |
| 3982 | |
| 3983 /* | |
| 3984 * Get file name to use for swap file or backup file. | |
| 3985 * Use the name of the edited file "fname" and an entry in the 'dir' or 'bdir' | |
| 3986 * option "dname". | |
| 3987 * - If "dname" is ".", return "fname" (swap file in dir of file). | |
| 3988 * - If "dname" starts with "./", insert "dname" in "fname" (swap file | |
| 3989 * relative to dir of file). | |
| 3990 * - Otherwise, prepend "dname" to the tail of "fname" (swap file in specific | |
| 3991 * dir). | |
| 3992 * | |
| 3993 * The return value is an allocated string and can be NULL. | |
| 3994 */ | |
| 3995 char_u * | |
|
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|
3996 get_file_in_dir( |
|
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parents:
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diff
changeset
|
3997 char_u *fname, |
|
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diff
changeset
|
3998 char_u *dname) /* don't use "dirname", it is a global for Alpha */ |
| 7 | 3999 { |
| 4000 char_u *t; | |
| 4001 char_u *tail; | |
| 4002 char_u *retval; | |
| 4003 int save_char; | |
| 4004 | |
| 4005 tail = gettail(fname); | |
| 4006 | |
| 4007 if (dname[0] == '.' && dname[1] == NUL) | |
| 4008 retval = vim_strsave(fname); | |
| 4009 else if (dname[0] == '.' && vim_ispathsep(dname[1])) | |
| 4010 { | |
| 4011 if (tail == fname) /* no path before file name */ | |
| 4012 retval = concat_fnames(dname + 2, tail, TRUE); | |
| 4013 else | |
| 4014 { | |
| 4015 save_char = *tail; | |
| 4016 *tail = NUL; | |
| 4017 t = concat_fnames(fname, dname + 2, TRUE); | |
| 4018 *tail = save_char; | |
| 4019 if (t == NULL) /* out of memory */ | |
| 4020 retval = NULL; | |
| 4021 else | |
| 4022 { | |
| 4023 retval = concat_fnames(t, tail, TRUE); | |
| 4024 vim_free(t); | |
| 4025 } | |
| 4026 } | |
| 4027 } | |
| 4028 else | |
| 4029 retval = concat_fnames(dname, tail, TRUE); | |
| 4030 | |
| 5432 | 4031 #ifdef WIN3264 |
| 4032 if (retval != NULL) | |
| 4033 for (t = gettail(retval); *t != NUL; mb_ptr_adv(t)) | |
| 4034 if (*t == ':') | |
| 4035 *t = '%'; | |
| 4036 #endif | |
| 4037 | |
| 7 | 4038 return retval; |
| 4039 } | |
| 4040 | |
|
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diff
changeset
|
4041 static void attention_message(buf_T *buf, char_u *fname); |
| 580 | 4042 |
| 4043 /* | |
| 4044 * Print the ATTENTION message: info about an existing swap file. | |
| 4045 */ | |
| 4046 static void | |
|
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|
4047 attention_message( |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
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diff
changeset
|
4048 buf_T *buf, /* buffer being edited */ |
|
41789f16d6b2
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parents:
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diff
changeset
|
4049 char_u *fname) /* swap file name */ |
| 580 | 4050 { |
| 4051 struct stat st; | |
| 4052 time_t x, sx; | |
| 1001 | 4053 char *p; |
| 580 | 4054 |
| 4055 ++no_wait_return; | |
| 4056 (void)EMSG(_("E325: ATTENTION")); | |
| 4057 MSG_PUTS(_("\nFound a swap file by the name \"")); | |
| 4058 msg_home_replace(fname); | |
| 4059 MSG_PUTS("\"\n"); | |
| 4060 sx = swapfile_info(fname); | |
| 4061 MSG_PUTS(_("While opening file \"")); | |
| 4062 msg_outtrans(buf->b_fname); | |
| 4063 MSG_PUTS("\"\n"); | |
| 4064 if (mch_stat((char *)buf->b_fname, &st) != -1) | |
| 4065 { | |
| 4066 MSG_PUTS(_(" dated: ")); | |
| 4067 x = st.st_mtime; /* Manx C can't do &st.st_mtime */ | |
| 1001 | 4068 p = ctime(&x); /* includes '\n' */ |
| 4069 if (p == NULL) | |
| 4070 MSG_PUTS("(invalid)\n"); | |
| 4071 else | |
| 4072 MSG_PUTS(p); | |
| 580 | 4073 if (sx != 0 && x > sx) |
| 4074 MSG_PUTS(_(" NEWER than swap file!\n")); | |
| 4075 } | |
| 4076 /* Some of these messages are long to allow translation to | |
| 4077 * other languages. */ | |
| 2703 | 4078 MSG_PUTS(_("\n(1) Another program may be editing the same file. If this is the case,\n be careful not to end up with two different instances of the same\n file when making changes.")); |
| 4079 MSG_PUTS(_(" Quit, or continue with caution.\n")); | |
| 4080 MSG_PUTS(_("(2) An edit session for this file crashed.\n")); | |
| 580 | 4081 MSG_PUTS(_(" If this is the case, use \":recover\" or \"vim -r ")); |
| 4082 msg_outtrans(buf->b_fname); | |
| 4083 MSG_PUTS(_("\"\n to recover the changes (see \":help recovery\").\n")); | |
| 4084 MSG_PUTS(_(" If you did this already, delete the swap file \"")); | |
| 4085 msg_outtrans(fname); | |
| 4086 MSG_PUTS(_("\"\n to avoid this message.\n")); | |
| 4087 cmdline_row = msg_row; | |
| 4088 --no_wait_return; | |
| 4089 } | |
| 4090 | |
| 4091 #ifdef FEAT_AUTOCMD | |
|
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diff
changeset
|
4092 static int do_swapexists(buf_T *buf, char_u *fname); |
| 580 | 4093 |
| 4094 /* | |
| 4095 * Trigger the SwapExists autocommands. | |
| 4096 * Returns a value for equivalent to do_dialog() (see below): | |
| 4097 * 0: still need to ask for a choice | |
| 4098 * 1: open read-only | |
| 4099 * 2: edit anyway | |
| 4100 * 3: recover | |
| 4101 * 4: delete it | |
| 4102 * 5: quit | |
| 4103 * 6: abort | |
| 4104 */ | |
| 4105 static int | |
|
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diff
changeset
|
4106 do_swapexists(buf_T *buf, char_u *fname) |
| 580 | 4107 { |
| 4108 set_vim_var_string(VV_SWAPNAME, fname, -1); | |
| 4109 set_vim_var_string(VV_SWAPCHOICE, NULL, -1); | |
| 4110 | |
| 4111 /* Trigger SwapExists autocommands with <afile> set to the file being | |
| 1856 | 4112 * edited. Disallow changing directory here. */ |
| 4113 ++allbuf_lock; | |
| 580 | 4114 apply_autocmds(EVENT_SWAPEXISTS, buf->b_fname, NULL, FALSE, NULL); |
| 1856 | 4115 --allbuf_lock; |
| 580 | 4116 |
| 4117 set_vim_var_string(VV_SWAPNAME, NULL, -1); | |
| 4118 | |
| 4119 switch (*get_vim_var_str(VV_SWAPCHOICE)) | |
| 4120 { | |
| 4121 case 'o': return 1; | |
| 4122 case 'e': return 2; | |
| 4123 case 'r': return 3; | |
| 4124 case 'd': return 4; | |
| 4125 case 'q': return 5; | |
| 4126 case 'a': return 6; | |
| 4127 } | |
| 4128 | |
| 4129 return 0; | |
| 4130 } | |
| 4131 #endif | |
| 4132 | |
| 7 | 4133 /* |
| 4134 * Find out what name to use for the swap file for buffer 'buf'. | |
| 4135 * | |
| 4136 * Several names are tried to find one that does not exist | |
| 460 | 4137 * Returns the name in allocated memory or NULL. |
| 3158 | 4138 * When out of memory "dirp" is set to NULL. |
| 7 | 4139 * |
| 4140 * Note: If BASENAMELEN is not correct, you will get error messages for | |
|
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|
4141 * not being able to open the swap or undo file |
| 1856 | 4142 * Note: May trigger SwapExists autocmd, pointers may change! |
| 7 | 4143 */ |
| 4144 static char_u * | |
|
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|
4145 findswapname( |
|
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|
4146 buf_T *buf, |
|
41789f16d6b2
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changeset
|
4147 char_u **dirp, /* pointer to list of directories */ |
|
41789f16d6b2
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diff
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|
4148 char_u *old_fname) /* don't give warning for this file name */ |
| 7 | 4149 { |
| 4150 char_u *fname; | |
| 4151 int n; | |
| 4152 char_u *dir_name; | |
| 4153 #ifdef AMIGA | |
| 4154 BPTR fh; | |
| 4155 #endif | |
| 4156 #ifndef SHORT_FNAME | |
| 4157 int r; | |
| 4158 #endif | |
| 5432 | 4159 char_u *buf_fname = buf->b_fname; |
| 7 | 4160 |
|
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7408
diff
changeset
|
4161 #if !defined(SHORT_FNAME) && !defined(UNIX) |
| 7 | 4162 # define CREATE_DUMMY_FILE |
| 4163 FILE *dummyfd = NULL; | |
| 4164 | |
| 5432 | 4165 # ifdef WIN3264 |
| 4166 if (buf_fname != NULL && !mch_isFullName(buf_fname) | |
| 4167 && vim_strchr(gettail(buf_fname), ':')) | |
| 4168 { | |
| 4169 char_u *t; | |
| 4170 | |
| 4171 buf_fname = vim_strsave(buf_fname); | |
| 4172 if (buf_fname == NULL) | |
| 4173 buf_fname = buf->b_fname; | |
| 4174 else | |
| 4175 for (t = gettail(buf_fname); *t != NUL; mb_ptr_adv(t)) | |
| 4176 if (*t == ':') | |
| 4177 *t = '%'; | |
| 4178 } | |
| 4179 # endif | |
| 4180 | |
|
2214
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4181 /* |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4182 * If we start editing a new file, e.g. "test.doc", which resides on an |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4183 * MSDOS compatible filesystem, it is possible that the file |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4184 * "test.doc.swp" which we create will be exactly the same file. To avoid |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4185 * this problem we temporarily create "test.doc". Don't do this when the |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4186 * check below for a 8.3 file name is used. |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4187 */ |
| 5432 | 4188 if (!(buf->b_p_sn || buf->b_shortname) && buf_fname != NULL |
| 4189 && mch_getperm(buf_fname) < 0) | |
| 4190 dummyfd = mch_fopen((char *)buf_fname, "w"); | |
| 7 | 4191 #endif |
| 4192 | |
|
2214
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4193 /* |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4194 * Isolate a directory name from *dirp and put it in dir_name. |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4195 * First allocate some memory to put the directory name in. |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4196 */ |
| 7 | 4197 dir_name = alloc((unsigned)STRLEN(*dirp) + 1); |
| 3158 | 4198 if (dir_name == NULL) |
| 4199 *dirp = NULL; | |
| 4200 else | |
| 7 | 4201 (void)copy_option_part(dirp, dir_name, 31000, ","); |
| 4202 | |
|
2214
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4203 /* |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4204 * we try different names until we find one that does not exist yet |
|
f8222d1f9a73
Included patch for persistent undo. Lots of changes and added test.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
4205 */ |
| 7 | 4206 if (dir_name == NULL) /* out of memory */ |
| 4207 fname = NULL; | |
| 4208 else | |
| 5432 | 4209 fname = makeswapname(buf_fname, buf->b_ffname, buf, dir_name); |
| 7 | 4210 |
| 4211 for (;;) | |
| 4212 { | |
| 4213 if (fname == NULL) /* must be out of memory */ | |
| 4214 break; | |
| 4215 if ((n = (int)STRLEN(fname)) == 0) /* safety check */ | |
| 4216 { | |
| 4217 vim_free(fname); | |
| 4218 fname = NULL; | |
| 4219 break; | |
| 4220 } | |
|
7410
08e62c4fc17d
commit https://github.com/vim/vim/commit/53076830fea6df737455523f7e235bfe4f79864d
Christian Brabandt <cb@256bit.org>
parents:
7408
diff
changeset
|
4221 #if defined(UNIX) && !defined(SHORT_FNAME) |
| 7 | 4222 /* |
| 4223 * Some systems have a MS-DOS compatible filesystem that use 8.3 character | |
| 4224 * file names. If this is the first try and the swap file name does not fit in | |
| 4225 * 8.3, detect if this is the case, set shortname and try again. | |
| 4226 */ | |
| 4227 if (fname[n - 2] == 'w' && fname[n - 1] == 'p' | |
| 4228 && !(buf->b_p_sn || buf->b_shortname)) | |
| 4229 { | |
| 4230 char_u *tail; | |
| 4231 char_u *fname2; | |
| 4232 struct stat s1, s2; | |
| 4233 int f1, f2; | |
| 4234 int created1 = FALSE, created2 = FALSE; | |
| 4235 int same = FALSE; | |
| 4236 | |
| 4237 /* | |
| 4238 * Check if swapfile name does not fit in 8.3: | |
| 4239 * It either contains two dots, is longer than 8 chars, or starts | |
| 4240 * with a dot. | |
| 4241 */ | |
| 5432 | 4242 tail = gettail(buf_fname); |
| 7 | 4243 if ( vim_strchr(tail, '.') != NULL |
| 4244 || STRLEN(tail) > (size_t)8 | |
| 4245 || *gettail(fname) == '.') | |
| 4246 { | |
| 4247 fname2 = alloc(n + 2); | |
| 4248 if (fname2 != NULL) | |
| 4249 { | |
| 4250 STRCPY(fname2, fname); | |
| 4251 /* if fname == "xx.xx.swp", fname2 = "xx.xx.swx" | |
| 4252 * if fname == ".xx.swp", fname2 = ".xx.swpx" | |
| 4253 * if fname == "123456789.swp", fname2 = "12345678x.swp" | |
| 4254 */ | |
| 4255 if (vim_strchr(tail, '.') != NULL) | |
| 4256 fname2[n - 1] = 'x'; | |
| 4257 else if (*gettail(fname) == '.') | |
| 4258 { | |
| 4259 fname2[n] = 'x'; | |
| 4260 fname2[n + 1] = NUL; | |
| 4261 } | |
| 4262 else | |
| 4263 fname2[n - 5] += 1; | |
| 4264 /* | |
| 4265 * may need to create the files to be able to use mch_stat() | |
| 4266 */ | |
| 4267 f1 = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
| 4268 if (f1 < 0) | |
| 4269 { | |
| 4270 f1 = mch_open_rw((char *)fname, | |
| 4271 O_RDWR|O_CREAT|O_EXCL|O_EXTRA); | |
| 4272 created1 = TRUE; | |
| 4273 } | |
| 4274 if (f1 >= 0) | |
| 4275 { | |
| 4276 f2 = mch_open((char *)fname2, O_RDONLY | O_EXTRA, 0); | |
| 4277 if (f2 < 0) | |
| 4278 { | |
| 4279 f2 = mch_open_rw((char *)fname2, | |
| 4280 O_RDWR|O_CREAT|O_EXCL|O_EXTRA); | |
| 4281 created2 = TRUE; | |
| 4282 } | |
| 4283 if (f2 >= 0) | |
| 4284 { | |
| 4285 /* | |
| 4286 * Both files exist now. If mch_stat() returns the | |
| 4287 * same device and inode they are the same file. | |
| 4288 */ | |
| 4289 if (mch_fstat(f1, &s1) != -1 | |
| 4290 && mch_fstat(f2, &s2) != -1 | |
| 4291 && s1.st_dev == s2.st_dev | |
| 4292 && s1.st_ino == s2.st_ino) | |
| 4293 same = TRUE; | |
| 4294 close(f2); | |
| 4295 if (created2) | |
| 4296 mch_remove(fname2); | |
| 4297 } | |
| 4298 close(f1); | |
| 4299 if (created1) | |
| 4300 mch_remove(fname); | |
| 4301 } | |
| 4302 vim_free(fname2); | |
| 4303 if (same) | |
| 4304 { | |
| 4305 buf->b_shortname = TRUE; | |
| 4306 vim_free(fname); | |
| 5432 | 4307 fname = makeswapname(buf_fname, buf->b_ffname, |
| 460 | 4308 buf, dir_name); |
| 7 | 4309 continue; /* try again with b_shortname set */ |
| 4310 } | |
| 4311 } | |
| 4312 } | |
| 4313 } | |
| 4314 #endif | |
| 4315 /* | |
| 4316 * check if the swapfile already exists | |
| 4317 */ | |
| 4318 if (mch_getperm(fname) < 0) /* it does not exist */ | |
| 4319 { | |
| 4320 #ifdef HAVE_LSTAT | |
| 4321 struct stat sb; | |
| 4322 | |
| 4323 /* | |
| 4324 * Extra security check: When a swap file is a symbolic link, this | |
| 4325 * is most likely a symlink attack. | |
| 4326 */ | |
| 4327 if (mch_lstat((char *)fname, &sb) < 0) | |
| 4328 #else | |
| 4329 # ifdef AMIGA | |
| 4330 fh = Open((UBYTE *)fname, (long)MODE_NEWFILE); | |
| 4331 /* | |
| 4332 * on the Amiga mch_getperm() will return -1 when the file exists | |
| 4333 * but is being used by another program. This happens if you edit | |
| 4334 * a file twice. | |
| 4335 */ | |
| 4336 if (fh != (BPTR)NULL) /* can open file, OK */ | |
| 4337 { | |
| 4338 Close(fh); | |
| 4339 mch_remove(fname); | |
| 4340 break; | |
| 4341 } | |
| 4342 if (IoErr() != ERROR_OBJECT_IN_USE | |
| 4343 && IoErr() != ERROR_OBJECT_EXISTS) | |
| 4344 # endif | |
| 4345 #endif | |
| 4346 break; | |
| 4347 } | |
| 4348 | |
| 4349 /* | |
| 4350 * A file name equal to old_fname is OK to use. | |
| 4351 */ | |
| 4352 if (old_fname != NULL && fnamecmp(fname, old_fname) == 0) | |
| 4353 break; | |
| 4354 | |
| 4355 /* | |
| 4356 * get here when file already exists | |
| 4357 */ | |
| 4358 if (fname[n - 2] == 'w' && fname[n - 1] == 'p') /* first try */ | |
| 4359 { | |
| 4360 #ifndef SHORT_FNAME | |
| 4361 /* | |
| 4362 * on MS-DOS compatible filesystems (e.g. messydos) file.doc.swp | |
| 4363 * and file.doc are the same file. To guess if this problem is | |
| 4364 * present try if file.doc.swx exists. If it does, we set | |
| 4365 * buf->b_shortname and try file_doc.swp (dots replaced by | |
| 4366 * underscores for this file), and try again. If it doesn't we | |
| 4367 * assume that "file.doc.swp" already exists. | |
| 4368 */ | |
| 4369 if (!(buf->b_p_sn || buf->b_shortname)) /* not tried yet */ | |
| 4370 { | |
| 4371 fname[n - 1] = 'x'; | |
| 4372 r = mch_getperm(fname); /* try "file.swx" */ | |
| 4373 fname[n - 1] = 'p'; | |
| 4374 if (r >= 0) /* "file.swx" seems to exist */ | |
| 4375 { | |
| 4376 buf->b_shortname = TRUE; | |
| 4377 vim_free(fname); | |
| 5432 | 4378 fname = makeswapname(buf_fname, buf->b_ffname, |
| 460 | 4379 buf, dir_name); |
| 7 | 4380 continue; /* try again with '.' replaced with '_' */ |
| 4381 } | |
| 4382 } | |
| 4383 #endif | |
| 4384 /* | |
| 4385 * If we get here the ".swp" file really exists. | |
| 4386 * Give an error message, unless recovering, no file name, we are | |
| 4387 * viewing a help file or when the path of the file is different | |
| 4388 * (happens when all .swp files are in one directory). | |
| 4389 */ | |
| 5432 | 4390 if (!recoverymode && buf_fname != NULL |
| 43 | 4391 && !buf->b_help && !(buf->b_flags & BF_DUMMY)) |
| 7 | 4392 { |
| 4393 int fd; | |
| 4394 struct block0 b0; | |
| 4395 int differ = FALSE; | |
| 4396 | |
| 4397 /* | |
| 4398 * Try to read block 0 from the swap file to get the original | |
| 4399 * file name (and inode number). | |
| 4400 */ | |
| 4401 fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0); | |
| 4402 if (fd >= 0) | |
| 4403 { | |
| 2664 | 4404 if (read_eintr(fd, &b0, sizeof(b0)) == sizeof(b0)) |
| 7 | 4405 { |
| 4406 /* | |
| 39 | 4407 * If the swapfile has the same directory as the |
| 4408 * buffer don't compare the directory names, they can | |
| 4409 * have a different mountpoint. | |
| 7 | 4410 */ |
| 39 | 4411 if (b0.b0_flags & B0_SAME_DIR) |
| 4412 { | |
| 4413 if (fnamecmp(gettail(buf->b_ffname), | |
| 4414 gettail(b0.b0_fname)) != 0 | |
| 4415 || !same_directory(fname, buf->b_ffname)) | |
| 594 | 4416 { |
| 4417 #ifdef CHECK_INODE | |
| 4418 /* Symlinks may point to the same file even | |
| 4419 * when the name differs, need to check the | |
| 4420 * inode too. */ | |
| 4421 expand_env(b0.b0_fname, NameBuff, MAXPATHL); | |
| 4422 if (fnamecmp_ino(buf->b_ffname, NameBuff, | |
| 4423 char_to_long(b0.b0_ino))) | |
| 4424 #endif | |
| 4425 differ = TRUE; | |
| 4426 } | |
| 39 | 4427 } |
| 4428 else | |
| 4429 { | |
| 4430 /* | |
| 4431 * The name in the swap file may be | |
| 4432 * "~user/path/file". Expand it first. | |
| 4433 */ | |
| 4434 expand_env(b0.b0_fname, NameBuff, MAXPATHL); | |
| 7 | 4435 #ifdef CHECK_INODE |
| 39 | 4436 if (fnamecmp_ino(buf->b_ffname, NameBuff, |
| 594 | 4437 char_to_long(b0.b0_ino))) |
| 39 | 4438 differ = TRUE; |
| 7 | 4439 #else |
| 39 | 4440 if (fnamecmp(NameBuff, buf->b_ffname) != 0) |
| 4441 differ = TRUE; | |
| 7 | 4442 #endif |
| 39 | 4443 } |
| 7 | 4444 } |
| 4445 close(fd); | |
| 4446 } | |
| 4447 | |
| 4448 /* give the ATTENTION message when there is an old swap file | |
| 4449 * for the current file, and the buffer was not recovered. */ | |
| 4450 if (differ == FALSE && !(curbuf->b_flags & BF_RECOVERED) | |
| 4451 && vim_strchr(p_shm, SHM_ATTENTION) == NULL) | |
| 4452 { | |
| 580 | 4453 #if defined(HAS_SWAP_EXISTS_ACTION) |
| 4454 int choice = 0; | |
| 4455 #endif | |
| 7 | 4456 #ifdef CREATE_DUMMY_FILE |
| 4457 int did_use_dummy = FALSE; | |
| 4458 | |
| 4459 /* Avoid getting a warning for the file being created | |
| 4460 * outside of Vim, it was created at the start of this | |
| 4461 * function. Delete the file now, because Vim might exit | |
| 4462 * here if the window is closed. */ | |
| 4463 if (dummyfd != NULL) | |
| 4464 { | |
| 4465 fclose(dummyfd); | |
| 4466 dummyfd = NULL; | |
| 5432 | 4467 mch_remove(buf_fname); |
| 7 | 4468 did_use_dummy = TRUE; |
| 4469 } | |
| 4470 #endif | |
| 4471 | |
| 4472 #if (defined(UNIX) || defined(__EMX__) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)) | |
| 4473 process_still_running = FALSE; | |
| 4474 #endif | |
| 580 | 4475 #ifdef FEAT_AUTOCMD |
| 4476 /* | |
| 4477 * If there is an SwapExists autocommand and we can handle | |
| 4478 * the response, trigger it. It may return 0 to ask the | |
| 4479 * user anyway. | |
| 4480 */ | |
| 4481 if (swap_exists_action != SEA_NONE | |
| 5432 | 4482 && has_autocmd(EVENT_SWAPEXISTS, buf_fname, buf)) |
| 580 | 4483 choice = do_swapexists(buf, fname); |
| 4484 | |
| 4485 if (choice == 0) | |
| 4486 #endif | |
| 7 | 4487 { |
| 580 | 4488 #ifdef FEAT_GUI |
| 4489 /* If we are supposed to start the GUI but it wasn't | |
| 4490 * completely started yet, start it now. This makes | |
| 4491 * the messages displayed in the Vim window when | |
| 4492 * loading a session from the .gvimrc file. */ | |
| 4493 if (gui.starting && !gui.in_use) | |
| 4494 gui_start(); | |
| 4495 #endif | |
| 4496 /* Show info about the existing swap file. */ | |
| 4497 attention_message(buf, fname); | |
| 4498 | |
| 4499 /* We don't want a 'q' typed at the more-prompt | |
| 4500 * interrupt loading a file. */ | |
| 4501 got_int = FALSE; | |
| 7 | 4502 } |
| 4503 | |
| 4504 #if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) | |
| 580 | 4505 if (swap_exists_action != SEA_NONE && choice == 0) |
| 7 | 4506 { |
| 4507 char_u *name; | |
| 4508 | |
| 4509 name = alloc((unsigned)(STRLEN(fname) | |
| 4510 + STRLEN(_("Swap file \"")) | |
| 4511 + STRLEN(_("\" already exists!")) + 5)); | |
| 4512 if (name != NULL) | |
| 4513 { | |
| 4514 STRCPY(name, _("Swap file \"")); | |
| 4515 home_replace(NULL, fname, name + STRLEN(name), | |
| 4516 1000, TRUE); | |
| 4517 STRCAT(name, _("\" already exists!")); | |
| 4518 } | |
| 580 | 4519 choice = do_dialog(VIM_WARNING, |
| 7 | 4520 (char_u *)_("VIM - ATTENTION"), |
| 4521 name == NULL | |
| 4522 ? (char_u *)_("Swap file already exists!") | |
| 4523 : name, | |
| 4524 # if defined(UNIX) || defined(__EMX__) || defined(VMS) | |
| 4525 process_still_running | |
| 4526 ? (char_u *)_("&Open Read-Only\n&Edit anyway\n&Recover\n&Quit\n&Abort") : | |
| 4527 # endif | |
| 2684 | 4528 (char_u *)_("&Open Read-Only\n&Edit anyway\n&Recover\n&Delete it\n&Quit\n&Abort"), 1, NULL, FALSE); |
| 580 | 4529 |
| 4530 # if defined(UNIX) || defined(__EMX__) || defined(VMS) | |
| 4531 if (process_still_running && choice >= 4) | |
| 4532 choice++; /* Skip missing "Delete it" button */ | |
| 4533 # endif | |
| 4534 vim_free(name); | |
| 4535 | |
| 4536 /* pretend screen didn't scroll, need redraw anyway */ | |
| 4537 msg_scrolled = 0; | |
| 4538 redraw_all_later(NOT_VALID); | |
| 4539 } | |
| 4540 #endif | |
| 4541 | |
| 4542 #if defined(HAS_SWAP_EXISTS_ACTION) | |
| 4543 if (choice > 0) | |
| 4544 { | |
| 4545 switch (choice) | |
| 7 | 4546 { |
| 4547 case 1: | |
| 4548 buf->b_p_ro = TRUE; | |
| 4549 break; | |
| 4550 case 2: | |
| 4551 break; | |
| 4552 case 3: | |
| 4553 swap_exists_action = SEA_RECOVER; | |
| 4554 break; | |
| 4555 case 4: | |
| 580 | 4556 mch_remove(fname); |
| 4557 break; | |
| 4558 case 5: | |
| 7 | 4559 swap_exists_action = SEA_QUIT; |
| 4560 break; | |
| 580 | 4561 case 6: |
| 7 | 4562 swap_exists_action = SEA_QUIT; |
| 4563 got_int = TRUE; | |
| 4564 break; | |
| 4565 } | |
| 4566 | |
| 4567 /* If the file was deleted this fname can be used. */ | |
| 4568 if (mch_getperm(fname) < 0) | |
| 4569 break; | |
| 4570 } | |
| 4571 else | |
| 4572 #endif | |
| 4573 { | |
| 4574 MSG_PUTS("\n"); | |
| 625 | 4575 if (msg_silent == 0) |
| 4576 /* call wait_return() later */ | |
| 4577 need_wait_return = TRUE; | |
| 7 | 4578 } |
| 4579 | |
| 4580 #ifdef CREATE_DUMMY_FILE | |
| 4581 /* Going to try another name, need the dummy file again. */ | |
| 4582 if (did_use_dummy) | |
| 5432 | 4583 dummyfd = mch_fopen((char *)buf_fname, "w"); |
| 7 | 4584 #endif |
| 4585 } | |
| 4586 } | |
| 4587 } | |
| 4588 | |
| 4589 /* | |
| 4590 * Change the ".swp" extension to find another file that can be used. | |
| 4591 * First decrement the last char: ".swo", ".swn", etc. | |
| 4592 * If that still isn't enough decrement the last but one char: ".svz" | |
| 9 | 4593 * Can happen when editing many "No Name" buffers. |
| 7 | 4594 */ |
| 4595 if (fname[n - 1] == 'a') /* ".s?a" */ | |
| 4596 { | |
| 4597 if (fname[n - 2] == 'a') /* ".saa": tried enough, give up */ | |
| 4598 { | |
| 4599 EMSG(_("E326: Too many swap files found")); | |
| 4600 vim_free(fname); | |
| 4601 fname = NULL; | |
| 4602 break; | |
| 4603 } | |
| 4604 --fname[n - 2]; /* ".svz", ".suz", etc. */ | |
| 4605 fname[n - 1] = 'z' + 1; | |
| 4606 } | |
| 4607 --fname[n - 1]; /* ".swo", ".swn", etc. */ | |
| 4608 } | |
| 4609 | |
| 4610 vim_free(dir_name); | |
| 4611 #ifdef CREATE_DUMMY_FILE | |
| 4612 if (dummyfd != NULL) /* file has been created temporarily */ | |
| 4613 { | |
| 4614 fclose(dummyfd); | |
| 5432 | 4615 mch_remove(buf_fname); |
| 7 | 4616 } |
| 4617 #endif | |
| 5432 | 4618 #ifdef WIN3264 |
| 4619 if (buf_fname != buf->b_fname) | |
| 4620 vim_free(buf_fname); | |
| 4621 #endif | |
| 7 | 4622 return fname; |
| 4623 } | |
| 4624 | |
| 4625 static int | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4626 b0_magic_wrong(ZERO_BL *b0p) |
| 7 | 4627 { |
| 4628 return (b0p->b0_magic_long != (long)B0_MAGIC_LONG | |
| 4629 || b0p->b0_magic_int != (int)B0_MAGIC_INT | |
| 4630 || b0p->b0_magic_short != (short)B0_MAGIC_SHORT | |
| 4631 || b0p->b0_magic_char != B0_MAGIC_CHAR); | |
| 4632 } | |
| 4633 | |
| 4634 #ifdef CHECK_INODE | |
| 4635 /* | |
| 4636 * Compare current file name with file name from swap file. | |
| 4637 * Try to use inode numbers when possible. | |
| 4638 * Return non-zero when files are different. | |
| 4639 * | |
| 4640 * When comparing file names a few things have to be taken into consideration: | |
| 4641 * - When working over a network the full path of a file depends on the host. | |
| 4642 * We check the inode number if possible. It is not 100% reliable though, | |
| 4643 * because the device number cannot be used over a network. | |
| 4644 * - When a file does not exist yet (editing a new file) there is no inode | |
| 4645 * number. | |
| 4646 * - The file name in a swap file may not be valid on the current host. The | |
| 4647 * "~user" form is used whenever possible to avoid this. | |
| 4648 * | |
| 4649 * This is getting complicated, let's make a table: | |
| 4650 * | |
| 4651 * ino_c ino_s fname_c fname_s differ = | |
| 4652 * | |
| 4653 * both files exist -> compare inode numbers: | |
| 4654 * != 0 != 0 X X ino_c != ino_s | |
| 4655 * | |
| 4656 * inode number(s) unknown, file names available -> compare file names | |
| 4657 * == 0 X OK OK fname_c != fname_s | |
| 4658 * X == 0 OK OK fname_c != fname_s | |
| 4659 * | |
| 4660 * current file doesn't exist, file for swap file exist, file name(s) not | |
| 4661 * available -> probably different | |
| 4662 * == 0 != 0 FAIL X TRUE | |
| 4663 * == 0 != 0 X FAIL TRUE | |
| 4664 * | |
| 4665 * current file exists, inode for swap unknown, file name(s) not | |
| 4666 * available -> probably different | |
| 4667 * != 0 == 0 FAIL X TRUE | |
| 4668 * != 0 == 0 X FAIL TRUE | |
| 4669 * | |
| 4670 * current file doesn't exist, inode for swap unknown, one file name not | |
| 4671 * available -> probably different | |
| 4672 * == 0 == 0 FAIL OK TRUE | |
| 4673 * == 0 == 0 OK FAIL TRUE | |
| 4674 * | |
| 4675 * current file doesn't exist, inode for swap unknown, both file names not | |
| 4676 * available -> probably same file | |
| 4677 * == 0 == 0 FAIL FAIL FALSE | |
| 4678 * | |
| 4679 * Note that when the ino_t is 64 bits, only the last 32 will be used. This | |
| 4680 * can't be changed without making the block 0 incompatible with 32 bit | |
| 4681 * versions. | |
| 4682 */ | |
| 4683 | |
| 4684 static int | |
|
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parents:
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diff
changeset
|
4685 fnamecmp_ino( |
|
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
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parents:
7803
diff
changeset
|
4686 char_u *fname_c, /* current file name */ |
|
41789f16d6b2
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parents:
7803
diff
changeset
|
4687 char_u *fname_s, /* file name from swap file */ |
|
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commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4688 long ino_block0) |
| 7 | 4689 { |
| 4690 struct stat st; | |
| 4691 ino_t ino_c = 0; /* ino of current file */ | |
| 4692 ino_t ino_s; /* ino of file from swap file */ | |
| 4693 char_u buf_c[MAXPATHL]; /* full path of fname_c */ | |
| 4694 char_u buf_s[MAXPATHL]; /* full path of fname_s */ | |
| 4695 int retval_c; /* flag: buf_c valid */ | |
| 4696 int retval_s; /* flag: buf_s valid */ | |
| 4697 | |
| 4698 if (mch_stat((char *)fname_c, &st) == 0) | |
| 4699 ino_c = (ino_t)st.st_ino; | |
| 4700 | |
| 4701 /* | |
| 4702 * First we try to get the inode from the file name, because the inode in | |
| 4703 * the swap file may be outdated. If that fails (e.g. this path is not | |
| 4704 * valid on this machine), use the inode from block 0. | |
| 4705 */ | |
| 4706 if (mch_stat((char *)fname_s, &st) == 0) | |
| 4707 ino_s = (ino_t)st.st_ino; | |
| 4708 else | |
| 4709 ino_s = (ino_t)ino_block0; | |
| 4710 | |
| 4711 if (ino_c && ino_s) | |
| 4712 return (ino_c != ino_s); | |
| 4713 | |
| 4714 /* | |
| 4715 * One of the inode numbers is unknown, try a forced vim_FullName() and | |
| 4716 * compare the file names. | |
| 4717 */ | |
| 4718 retval_c = vim_FullName(fname_c, buf_c, MAXPATHL, TRUE); | |
| 4719 retval_s = vim_FullName(fname_s, buf_s, MAXPATHL, TRUE); | |
| 4720 if (retval_c == OK && retval_s == OK) | |
| 4721 return (STRCMP(buf_c, buf_s) != 0); | |
| 4722 | |
| 4723 /* | |
| 4724 * Can't compare inodes or file names, guess that the files are different, | |
| 4725 * unless both appear not to exist at all. | |
| 4726 */ | |
| 4727 if (ino_s == 0 && ino_c == 0 && retval_c == FAIL && retval_s == FAIL) | |
| 4728 return FALSE; | |
| 4729 return TRUE; | |
| 4730 } | |
| 4731 #endif /* CHECK_INODE */ | |
| 4732 | |
| 4733 /* | |
| 4734 * Move a long integer into a four byte character array. | |
| 4735 * Used for machine independency in block zero. | |
| 4736 */ | |
| 4737 static void | |
|
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parents:
7803
diff
changeset
|
4738 long_to_char(long n, char_u *s) |
| 7 | 4739 { |
| 4740 s[0] = (char_u)(n & 0xff); | |
| 4741 n = (unsigned)n >> 8; | |
| 4742 s[1] = (char_u)(n & 0xff); | |
| 4743 n = (unsigned)n >> 8; | |
| 4744 s[2] = (char_u)(n & 0xff); | |
| 4745 n = (unsigned)n >> 8; | |
| 4746 s[3] = (char_u)(n & 0xff); | |
| 4747 } | |
| 4748 | |
| 4749 static long | |
|
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parents:
7803
diff
changeset
|
4750 char_to_long(char_u *s) |
| 7 | 4751 { |
| 4752 long retval; | |
| 4753 | |
| 4754 retval = s[3]; | |
| 4755 retval <<= 8; | |
| 4756 retval |= s[2]; | |
| 4757 retval <<= 8; | |
| 4758 retval |= s[1]; | |
| 4759 retval <<= 8; | |
| 4760 retval |= s[0]; | |
| 4761 | |
| 4762 return retval; | |
| 4763 } | |
| 4764 | |
| 39 | 4765 /* |
| 4766 * Set the flags in the first block of the swap file: | |
| 4767 * - file is modified or not: buf->b_changed | |
| 4768 * - 'fileformat' | |
| 4769 * - 'fileencoding' | |
| 4770 */ | |
| 7 | 4771 void |
|
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parents:
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diff
changeset
|
4772 ml_setflags(buf_T *buf) |
| 7 | 4773 { |
| 4774 bhdr_T *hp; | |
| 4775 ZERO_BL *b0p; | |
| 4776 | |
| 4777 if (!buf->b_ml.ml_mfp) | |
| 4778 return; | |
| 4779 for (hp = buf->b_ml.ml_mfp->mf_used_last; hp != NULL; hp = hp->bh_prev) | |
| 4780 { | |
| 4781 if (hp->bh_bnum == 0) | |
| 4782 { | |
| 4783 b0p = (ZERO_BL *)(hp->bh_data); | |
| 39 | 4784 b0p->b0_dirty = buf->b_changed ? B0_DIRTY : 0; |
| 4785 b0p->b0_flags = (b0p->b0_flags & ~B0_FF_MASK) | |
| 4786 | (get_fileformat(buf) + 1); | |
| 4787 #ifdef FEAT_MBYTE | |
| 4788 add_b0_fenc(b0p, buf); | |
| 4789 #endif | |
| 7 | 4790 hp->bh_flags |= BH_DIRTY; |
| 4791 mf_sync(buf->b_ml.ml_mfp, MFS_ZERO); | |
| 4792 break; | |
| 4793 } | |
| 4794 } | |
| 4795 } | |
| 4796 | |
| 2267 | 4797 #if defined(FEAT_CRYPT) || defined(PROTO) |
| 4798 /* | |
| 4799 * If "data" points to a data block encrypt the text in it and return a copy | |
| 4800 * in allocated memory. Return NULL when out of memory. | |
| 4801 * Otherwise return "data". | |
| 4802 */ | |
| 4803 char_u * | |
|
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parents:
7803
diff
changeset
|
4804 ml_encrypt_data( |
|
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parents:
7803
diff
changeset
|
4805 memfile_T *mfp, |
|
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parents:
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diff
changeset
|
4806 char_u *data, |
|
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parents:
7803
diff
changeset
|
4807 off_t offset, |
|
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4808 unsigned size) |
| 2267 | 4809 { |
| 4810 DATA_BL *dp = (DATA_BL *)data; | |
| 4811 char_u *head_end; | |
| 4812 char_u *text_start; | |
| 4813 char_u *new_data; | |
| 4814 int text_len; | |
| 6122 | 4815 cryptstate_T *state; |
| 2267 | 4816 |
| 4817 if (dp->db_id != DATA_ID) | |
| 4818 return data; | |
| 4819 | |
| 6817 | 4820 state = ml_crypt_prepare(mfp, offset, FALSE); |
| 4821 if (state == NULL) | |
| 4822 return data; | |
| 4823 | |
| 2267 | 4824 new_data = (char_u *)alloc(size); |
| 4825 if (new_data == NULL) | |
| 4826 return NULL; | |
| 4827 head_end = (char_u *)(&dp->db_index[dp->db_line_count]); | |
| 4828 text_start = (char_u *)dp + dp->db_txt_start; | |
| 4829 text_len = size - dp->db_txt_start; | |
| 4830 | |
| 4831 /* Copy the header and the text. */ | |
| 4832 mch_memmove(new_data, dp, head_end - (char_u *)dp); | |
| 4833 | |
| 4834 /* Encrypt the text. */ | |
| 6122 | 4835 crypt_encode(state, text_start, text_len, new_data + dp->db_txt_start); |
| 4836 crypt_free_state(state); | |
| 2267 | 4837 |
| 4838 /* Clear the gap. */ | |
| 4839 if (head_end < text_start) | |
| 4840 vim_memset(new_data + (head_end - data), 0, text_start - head_end); | |
| 4841 | |
| 4842 return new_data; | |
| 4843 } | |
| 4844 | |
| 4845 /* | |
| 6817 | 4846 * Decrypt the text in "data" if it points to an encrypted data block. |
| 2267 | 4847 */ |
| 4848 void | |
|
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parents:
7803
diff
changeset
|
4849 ml_decrypt_data( |
|
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parents:
7803
diff
changeset
|
4850 memfile_T *mfp, |
|
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parents:
7803
diff
changeset
|
4851 char_u *data, |
|
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parents:
7803
diff
changeset
|
4852 off_t offset, |
|
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4853 unsigned size) |
| 2267 | 4854 { |
| 4855 DATA_BL *dp = (DATA_BL *)data; | |
| 4856 char_u *head_end; | |
| 4857 char_u *text_start; | |
| 4858 int text_len; | |
| 6122 | 4859 cryptstate_T *state; |
| 2267 | 4860 |
| 4861 if (dp->db_id == DATA_ID) | |
| 4862 { | |
| 4863 head_end = (char_u *)(&dp->db_index[dp->db_line_count]); | |
| 4864 text_start = (char_u *)dp + dp->db_txt_start; | |
| 4865 text_len = dp->db_txt_end - dp->db_txt_start; | |
| 4866 | |
| 4867 if (head_end > text_start || dp->db_txt_start > size | |
| 4868 || dp->db_txt_end > size) | |
| 4869 return; /* data was messed up */ | |
| 4870 | |
| 6122 | 4871 state = ml_crypt_prepare(mfp, offset, TRUE); |
| 6817 | 4872 if (state != NULL) |
| 4873 { | |
| 4874 /* Decrypt the text in place. */ | |
| 4875 crypt_decode_inplace(state, text_start, text_len); | |
| 4876 crypt_free_state(state); | |
| 4877 } | |
| 2267 | 4878 } |
| 4879 } | |
| 4880 | |
| 4881 /* | |
| 4882 * Prepare for encryption/decryption, using the key, seed and offset. | |
| 6122 | 4883 * Return an allocated cryptstate_T *. |
| 2267 | 4884 */ |
| 6122 | 4885 static cryptstate_T * |
|
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parents:
7803
diff
changeset
|
4886 ml_crypt_prepare(memfile_T *mfp, off_t offset, int reading) |
| 2267 | 4887 { |
| 4888 buf_T *buf = mfp->mf_buffer; | |
| 4889 char_u salt[50]; | |
| 6122 | 4890 int method_nr; |
| 2267 | 4891 char_u *key; |
| 4892 char_u *seed; | |
| 4893 | |
| 4894 if (reading && mfp->mf_old_key != NULL) | |
| 4895 { | |
| 4896 /* Reading back blocks with the previous key/method/seed. */ | |
| 6122 | 4897 method_nr = mfp->mf_old_cm; |
| 2267 | 4898 key = mfp->mf_old_key; |
| 4899 seed = mfp->mf_old_seed; | |
| 4900 } | |
| 4901 else | |
| 4902 { | |
| 6122 | 4903 method_nr = crypt_get_method_nr(buf); |
| 2267 | 4904 key = buf->b_p_key; |
| 4905 seed = mfp->mf_seed; | |
| 4906 } | |
| 6817 | 4907 if (*key == NUL) |
| 4908 return NULL; | |
| 2267 | 4909 |
| 6122 | 4910 if (method_nr == CRYPT_M_ZIP) |
| 2267 | 4911 { |
| 6122 | 4912 /* For PKzip: Append the offset to the key, so that we use a different |
| 4913 * key for every block. */ | |
| 2267 | 4914 vim_snprintf((char *)salt, sizeof(salt), "%s%ld", key, (long)offset); |
| 6122 | 4915 return crypt_create(method_nr, salt, NULL, 0, NULL, 0); |
| 2267 | 4916 } |
| 6122 | 4917 |
| 4918 /* Using blowfish or better: add salt and seed. We use the byte offset | |
| 4919 * of the block for the salt. */ | |
| 4920 vim_snprintf((char *)salt, sizeof(salt), "%ld", (long)offset); | |
| 4921 return crypt_create(method_nr, key, salt, (int)STRLEN(salt), | |
| 4922 seed, MF_SEED_LEN); | |
| 2267 | 4923 } |
| 4924 | |
| 4925 #endif | |
| 4926 | |
| 4927 | |
| 7 | 4928 #if defined(FEAT_BYTEOFF) || defined(PROTO) |
| 4929 | |
| 4930 #define MLCS_MAXL 800 /* max no of lines in chunk */ | |
| 4931 #define MLCS_MINL 400 /* should be half of MLCS_MAXL */ | |
| 4932 | |
| 4933 /* | |
|
2407
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Bram Moolenaar <bram@vim.org>
parents:
2394
diff
changeset
|
4934 * Keep information for finding byte offset of a line, updtype may be one of: |
| 7 | 4935 * ML_CHNK_ADDLINE: Add len to parent chunk, possibly splitting it |
| 4936 * Careful: ML_CHNK_ADDLINE may cause ml_find_line() to be called. | |
| 4937 * ML_CHNK_DELLINE: Subtract len from parent chunk, possibly deleting it | |
| 4938 * ML_CHNK_UPDLINE: Add len to parent chunk, as a signed entity. | |
| 4939 */ | |
| 4940 static void | |
|
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diff
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|
4941 ml_updatechunk( |
|
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parents:
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diff
changeset
|
4942 buf_T *buf, |
|
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parents:
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diff
changeset
|
4943 linenr_T line, |
|
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4944 long len, |
|
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
4945 int updtype) |
| 7 | 4946 { |
| 4947 static buf_T *ml_upd_lastbuf = NULL; | |
| 4948 static linenr_T ml_upd_lastline; | |
| 4949 static linenr_T ml_upd_lastcurline; | |
| 4950 static int ml_upd_lastcurix; | |
| 4951 | |
| 4952 linenr_T curline = ml_upd_lastcurline; | |
| 4953 int curix = ml_upd_lastcurix; | |
| 4954 long size; | |
| 4955 chunksize_T *curchnk; | |
| 4956 int rest; | |
| 4957 bhdr_T *hp; | |
| 4958 DATA_BL *dp; | |
| 4959 | |
| 4960 if (buf->b_ml.ml_usedchunks == -1 || len == 0) | |
| 4961 return; | |
| 4962 if (buf->b_ml.ml_chunksize == NULL) | |
| 4963 { | |
| 4964 buf->b_ml.ml_chunksize = (chunksize_T *) | |
| 4965 alloc((unsigned)sizeof(chunksize_T) * 100); | |
| 4966 if (buf->b_ml.ml_chunksize == NULL) | |
| 4967 { | |
| 4968 buf->b_ml.ml_usedchunks = -1; | |
| 4969 return; | |
| 4970 } | |
| 4971 buf->b_ml.ml_numchunks = 100; | |
| 4972 buf->b_ml.ml_usedchunks = 1; | |
| 4973 buf->b_ml.ml_chunksize[0].mlcs_numlines = 1; | |
| 4974 buf->b_ml.ml_chunksize[0].mlcs_totalsize = 1; | |
| 4975 } | |
| 4976 | |
| 4977 if (updtype == ML_CHNK_UPDLINE && buf->b_ml.ml_line_count == 1) | |
| 4978 { | |
| 4979 /* | |
| 4980 * First line in empty buffer from ml_flush_line() -- reset | |
| 4981 */ | |
| 4982 buf->b_ml.ml_usedchunks = 1; | |
| 4983 buf->b_ml.ml_chunksize[0].mlcs_numlines = 1; | |
| 4984 buf->b_ml.ml_chunksize[0].mlcs_totalsize = | |
| 4985 (long)STRLEN(buf->b_ml.ml_line_ptr) + 1; | |
| 4986 return; | |
| 4987 } | |
| 4988 | |
| 4989 /* | |
| 4990 * Find chunk that our line belongs to, curline will be at start of the | |
| 4991 * chunk. | |
| 4992 */ | |
| 4993 if (buf != ml_upd_lastbuf || line != ml_upd_lastline + 1 | |
| 4994 || updtype != ML_CHNK_ADDLINE) | |
| 4995 { | |
| 4996 for (curline = 1, curix = 0; | |
| 4997 curix < buf->b_ml.ml_usedchunks - 1 | |
| 4998 && line >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 4999 curix++) | |
| 5000 { | |
| 5001 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 5002 } | |
| 5003 } | |
| 5004 else if (line >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines | |
| 5005 && curix < buf->b_ml.ml_usedchunks - 1) | |
| 5006 { | |
| 5007 /* Adjust cached curix & curline */ | |
| 5008 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 5009 curix++; | |
| 5010 } | |
| 5011 curchnk = buf->b_ml.ml_chunksize + curix; | |
| 5012 | |
| 5013 if (updtype == ML_CHNK_DELLINE) | |
| 1030 | 5014 len = -len; |
| 7 | 5015 curchnk->mlcs_totalsize += len; |
| 5016 if (updtype == ML_CHNK_ADDLINE) | |
| 5017 { | |
| 5018 curchnk->mlcs_numlines++; | |
| 5019 | |
| 5020 /* May resize here so we don't have to do it in both cases below */ | |
| 5021 if (buf->b_ml.ml_usedchunks + 1 >= buf->b_ml.ml_numchunks) | |
| 5022 { | |
| 6596 | 5023 chunksize_T *t_chunksize = buf->b_ml.ml_chunksize; |
| 5024 | |
| 7 | 5025 buf->b_ml.ml_numchunks = buf->b_ml.ml_numchunks * 3 / 2; |
| 5026 buf->b_ml.ml_chunksize = (chunksize_T *) | |
| 5027 vim_realloc(buf->b_ml.ml_chunksize, | |
| 5028 sizeof(chunksize_T) * buf->b_ml.ml_numchunks); | |
| 5029 if (buf->b_ml.ml_chunksize == NULL) | |
| 5030 { | |
| 5031 /* Hmmmm, Give up on offset for this buffer */ | |
| 6596 | 5032 vim_free(t_chunksize); |
| 7 | 5033 buf->b_ml.ml_usedchunks = -1; |
| 5034 return; | |
| 5035 } | |
| 5036 } | |
| 5037 | |
| 5038 if (buf->b_ml.ml_chunksize[curix].mlcs_numlines >= MLCS_MAXL) | |
| 5039 { | |
| 5040 int count; /* number of entries in block */ | |
| 5041 int idx; | |
| 5042 int text_end; | |
| 5043 int linecnt; | |
| 5044 | |
| 5045 mch_memmove(buf->b_ml.ml_chunksize + curix + 1, | |
| 5046 buf->b_ml.ml_chunksize + curix, | |
| 5047 (buf->b_ml.ml_usedchunks - curix) * | |
| 5048 sizeof(chunksize_T)); | |
| 1855 | 5049 /* Compute length of first half of lines in the split chunk */ |
| 7 | 5050 size = 0; |
| 5051 linecnt = 0; | |
| 5052 while (curline < buf->b_ml.ml_line_count | |
| 5053 && linecnt < MLCS_MINL) | |
| 5054 { | |
| 5055 if ((hp = ml_find_line(buf, curline, ML_FIND)) == NULL) | |
| 5056 { | |
| 5057 buf->b_ml.ml_usedchunks = -1; | |
| 5058 return; | |
| 5059 } | |
| 5060 dp = (DATA_BL *)(hp->bh_data); | |
| 5061 count = (long)(buf->b_ml.ml_locked_high) - | |
| 5062 (long)(buf->b_ml.ml_locked_low) + 1; | |
| 5063 idx = curline - buf->b_ml.ml_locked_low; | |
| 5064 curline = buf->b_ml.ml_locked_high + 1; | |
| 5065 if (idx == 0)/* first line in block, text at the end */ | |
| 5066 text_end = dp->db_txt_end; | |
| 5067 else | |
| 5068 text_end = ((dp->db_index[idx - 1]) & DB_INDEX_MASK); | |
| 5069 /* Compute index of last line to use in this MEMLINE */ | |
| 5070 rest = count - idx; | |
| 5071 if (linecnt + rest > MLCS_MINL) | |
| 5072 { | |
| 5073 idx += MLCS_MINL - linecnt - 1; | |
| 5074 linecnt = MLCS_MINL; | |
| 5075 } | |
| 5076 else | |
| 5077 { | |
| 5078 idx = count - 1; | |
| 5079 linecnt += rest; | |
| 5080 } | |
| 5081 size += text_end - ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 5082 } | |
| 5083 buf->b_ml.ml_chunksize[curix].mlcs_numlines = linecnt; | |
| 5084 buf->b_ml.ml_chunksize[curix + 1].mlcs_numlines -= linecnt; | |
| 5085 buf->b_ml.ml_chunksize[curix].mlcs_totalsize = size; | |
| 5086 buf->b_ml.ml_chunksize[curix + 1].mlcs_totalsize -= size; | |
| 5087 buf->b_ml.ml_usedchunks++; | |
| 5088 ml_upd_lastbuf = NULL; /* Force recalc of curix & curline */ | |
| 5089 return; | |
| 5090 } | |
| 5091 else if (buf->b_ml.ml_chunksize[curix].mlcs_numlines >= MLCS_MINL | |
| 5092 && curix == buf->b_ml.ml_usedchunks - 1 | |
| 5093 && buf->b_ml.ml_line_count - line <= 1) | |
| 5094 { | |
| 5095 /* | |
| 5096 * We are in the last chunk and it is cheap to crate a new one | |
| 5097 * after this. Do it now to avoid the loop above later on | |
| 5098 */ | |
| 5099 curchnk = buf->b_ml.ml_chunksize + curix + 1; | |
| 5100 buf->b_ml.ml_usedchunks++; | |
| 5101 if (line == buf->b_ml.ml_line_count) | |
| 5102 { | |
| 5103 curchnk->mlcs_numlines = 0; | |
| 5104 curchnk->mlcs_totalsize = 0; | |
| 5105 } | |
| 5106 else | |
| 5107 { | |
| 5108 /* | |
| 5109 * Line is just prior to last, move count for last | |
| 5110 * This is the common case when loading a new file | |
| 5111 */ | |
| 5112 hp = ml_find_line(buf, buf->b_ml.ml_line_count, ML_FIND); | |
| 5113 if (hp == NULL) | |
| 5114 { | |
| 5115 buf->b_ml.ml_usedchunks = -1; | |
| 5116 return; | |
| 5117 } | |
| 5118 dp = (DATA_BL *)(hp->bh_data); | |
| 5119 if (dp->db_line_count == 1) | |
| 5120 rest = dp->db_txt_end - dp->db_txt_start; | |
| 5121 else | |
| 5122 rest = | |
| 5123 ((dp->db_index[dp->db_line_count - 2]) & DB_INDEX_MASK) | |
| 5124 - dp->db_txt_start; | |
| 5125 curchnk->mlcs_totalsize = rest; | |
| 5126 curchnk->mlcs_numlines = 1; | |
| 5127 curchnk[-1].mlcs_totalsize -= rest; | |
| 5128 curchnk[-1].mlcs_numlines -= 1; | |
| 5129 } | |
| 5130 } | |
| 5131 } | |
| 5132 else if (updtype == ML_CHNK_DELLINE) | |
| 5133 { | |
| 5134 curchnk->mlcs_numlines--; | |
| 5135 ml_upd_lastbuf = NULL; /* Force recalc of curix & curline */ | |
| 5136 if (curix < (buf->b_ml.ml_usedchunks - 1) | |
| 5137 && (curchnk->mlcs_numlines + curchnk[1].mlcs_numlines) | |
| 5138 <= MLCS_MINL) | |
| 5139 { | |
| 5140 curix++; | |
| 5141 curchnk = buf->b_ml.ml_chunksize + curix; | |
| 5142 } | |
| 5143 else if (curix == 0 && curchnk->mlcs_numlines <= 0) | |
| 5144 { | |
| 5145 buf->b_ml.ml_usedchunks--; | |
| 5146 mch_memmove(buf->b_ml.ml_chunksize, buf->b_ml.ml_chunksize + 1, | |
| 5147 buf->b_ml.ml_usedchunks * sizeof(chunksize_T)); | |
| 5148 return; | |
| 5149 } | |
| 5150 else if (curix == 0 || (curchnk->mlcs_numlines > 10 | |
| 5151 && (curchnk->mlcs_numlines + curchnk[-1].mlcs_numlines) | |
| 5152 > MLCS_MINL)) | |
| 5153 { | |
| 5154 return; | |
| 5155 } | |
| 5156 | |
| 5157 /* Collapse chunks */ | |
| 5158 curchnk[-1].mlcs_numlines += curchnk->mlcs_numlines; | |
| 5159 curchnk[-1].mlcs_totalsize += curchnk->mlcs_totalsize; | |
| 5160 buf->b_ml.ml_usedchunks--; | |
| 5161 if (curix < buf->b_ml.ml_usedchunks) | |
| 5162 { | |
| 5163 mch_memmove(buf->b_ml.ml_chunksize + curix, | |
| 5164 buf->b_ml.ml_chunksize + curix + 1, | |
| 5165 (buf->b_ml.ml_usedchunks - curix) * | |
| 5166 sizeof(chunksize_T)); | |
| 5167 } | |
| 5168 return; | |
| 5169 } | |
| 5170 ml_upd_lastbuf = buf; | |
| 5171 ml_upd_lastline = line; | |
| 5172 ml_upd_lastcurline = curline; | |
| 5173 ml_upd_lastcurix = curix; | |
| 5174 } | |
| 5175 | |
| 5176 /* | |
| 5177 * Find offset for line or line with offset. | |
| 169 | 5178 * Find line with offset if "lnum" is 0; return remaining offset in offp |
| 5179 * Find offset of line if "lnum" > 0 | |
| 7 | 5180 * return -1 if information is not available |
| 5181 */ | |
| 5182 long | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
5183 ml_find_line_or_offset(buf_T *buf, linenr_T lnum, long *offp) |
| 7 | 5184 { |
| 5185 linenr_T curline; | |
| 5186 int curix; | |
| 5187 long size; | |
| 5188 bhdr_T *hp; | |
| 5189 DATA_BL *dp; | |
| 5190 int count; /* number of entries in block */ | |
| 5191 int idx; | |
| 5192 int start_idx; | |
| 5193 int text_end; | |
| 5194 long offset; | |
| 5195 int len; | |
| 5196 int ffdos = (get_fileformat(buf) == EOL_DOS); | |
| 5197 int extra = 0; | |
| 5198 | |
| 169 | 5199 /* take care of cached line first */ |
| 5200 ml_flush_line(curbuf); | |
| 5201 | |
| 7 | 5202 if (buf->b_ml.ml_usedchunks == -1 |
| 5203 || buf->b_ml.ml_chunksize == NULL | |
| 169 | 5204 || lnum < 0) |
| 7 | 5205 return -1; |
| 5206 | |
| 5207 if (offp == NULL) | |
| 5208 offset = 0; | |
| 5209 else | |
| 5210 offset = *offp; | |
| 169 | 5211 if (lnum == 0 && offset <= 0) |
| 7 | 5212 return 1; /* Not a "find offset" and offset 0 _must_ be in line 1 */ |
| 5213 /* | |
| 5214 * Find the last chunk before the one containing our line. Last chunk is | |
| 5215 * special because it will never qualify | |
| 5216 */ | |
| 5217 curline = 1; | |
| 5218 curix = size = 0; | |
| 5219 while (curix < buf->b_ml.ml_usedchunks - 1 | |
| 169 | 5220 && ((lnum != 0 |
| 5221 && lnum >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines) | |
| 7 | 5222 || (offset != 0 |
| 5223 && offset > size + buf->b_ml.ml_chunksize[curix].mlcs_totalsize | |
| 5224 + ffdos * buf->b_ml.ml_chunksize[curix].mlcs_numlines))) | |
| 5225 { | |
| 5226 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 5227 size += buf->b_ml.ml_chunksize[curix].mlcs_totalsize; | |
| 5228 if (offset && ffdos) | |
| 5229 size += buf->b_ml.ml_chunksize[curix].mlcs_numlines; | |
| 5230 curix++; | |
| 5231 } | |
| 5232 | |
| 169 | 5233 while ((lnum != 0 && curline < lnum) || (offset != 0 && size < offset)) |
| 7 | 5234 { |
| 5235 if (curline > buf->b_ml.ml_line_count | |
| 5236 || (hp = ml_find_line(buf, curline, ML_FIND)) == NULL) | |
| 5237 return -1; | |
| 5238 dp = (DATA_BL *)(hp->bh_data); | |
| 5239 count = (long)(buf->b_ml.ml_locked_high) - | |
| 5240 (long)(buf->b_ml.ml_locked_low) + 1; | |
| 5241 start_idx = idx = curline - buf->b_ml.ml_locked_low; | |
| 5242 if (idx == 0)/* first line in block, text at the end */ | |
| 5243 text_end = dp->db_txt_end; | |
| 5244 else | |
| 5245 text_end = ((dp->db_index[idx - 1]) & DB_INDEX_MASK); | |
| 5246 /* Compute index of last line to use in this MEMLINE */ | |
| 169 | 5247 if (lnum != 0) |
| 7 | 5248 { |
| 169 | 5249 if (curline + (count - idx) >= lnum) |
| 5250 idx += lnum - curline - 1; | |
| 7 | 5251 else |
| 5252 idx = count - 1; | |
| 5253 } | |
| 5254 else | |
| 5255 { | |
| 5256 extra = 0; | |
| 5257 while (offset >= size | |
| 5258 + text_end - (int)((dp->db_index[idx]) & DB_INDEX_MASK) | |
| 5259 + ffdos) | |
| 5260 { | |
| 5261 if (ffdos) | |
| 5262 size++; | |
| 5263 if (idx == count - 1) | |
| 5264 { | |
| 5265 extra = 1; | |
| 5266 break; | |
| 5267 } | |
| 5268 idx++; | |
| 5269 } | |
| 5270 } | |
| 5271 len = text_end - ((dp->db_index[idx]) & DB_INDEX_MASK); | |
| 5272 size += len; | |
| 5273 if (offset != 0 && size >= offset) | |
| 5274 { | |
| 5275 if (size + ffdos == offset) | |
| 5276 *offp = 0; | |
| 5277 else if (idx == start_idx) | |
| 5278 *offp = offset - size + len; | |
| 5279 else | |
| 5280 *offp = offset - size + len | |
| 5281 - (text_end - ((dp->db_index[idx - 1]) & DB_INDEX_MASK)); | |
| 5282 curline += idx - start_idx + extra; | |
| 5283 if (curline > buf->b_ml.ml_line_count) | |
| 5284 return -1; /* exactly one byte beyond the end */ | |
| 5285 return curline; | |
| 5286 } | |
| 5287 curline = buf->b_ml.ml_locked_high + 1; | |
| 5288 } | |
| 5289 | |
| 169 | 5290 if (lnum != 0) |
| 20 | 5291 { |
| 5292 /* Count extra CR characters. */ | |
| 5293 if (ffdos) | |
| 169 | 5294 size += lnum - 1; |
| 20 | 5295 |
| 6933 | 5296 /* Don't count the last line break if 'noeol' and ('bin' or |
| 5297 * 'nofixeol'). */ | |
| 5298 if ((!buf->b_p_fixeol || buf->b_p_bin) && !buf->b_p_eol | |
| 5299 && buf->b_ml.ml_line_count == lnum) | |
| 20 | 5300 size -= ffdos + 1; |
| 5301 } | |
| 5302 | |
| 7 | 5303 return size; |
| 5304 } | |
| 5305 | |
| 5306 /* | |
| 5307 * Goto byte in buffer with offset 'cnt'. | |
| 5308 */ | |
| 5309 void | |
|
7827
41789f16d6b2
commit https://github.com/vim/vim/commit/52ea13da0fe86df1abf34de52841e367035170c0
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
5310 goto_byte(long cnt) |
| 7 | 5311 { |
| 5312 long boff = cnt; | |
| 5313 linenr_T lnum; | |
| 5314 | |
| 5315 ml_flush_line(curbuf); /* cached line may be dirty */ | |
| 5316 setpcmark(); | |
| 5317 if (boff) | |
| 5318 --boff; | |
| 5319 lnum = ml_find_line_or_offset(curbuf, (linenr_T)0, &boff); | |
| 5320 if (lnum < 1) /* past the end */ | |
| 5321 { | |
| 5322 curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; | |
| 5323 curwin->w_curswant = MAXCOL; | |
| 5324 coladvance((colnr_T)MAXCOL); | |
| 5325 } | |
| 5326 else | |
| 5327 { | |
| 5328 curwin->w_cursor.lnum = lnum; | |
| 5329 curwin->w_cursor.col = (colnr_T)boff; | |
| 572 | 5330 # ifdef FEAT_VIRTUALEDIT |
| 5331 curwin->w_cursor.coladd = 0; | |
| 5332 # endif | |
| 7 | 5333 curwin->w_set_curswant = TRUE; |
| 5334 } | |
| 5335 check_cursor(); | |
| 5336 | |
| 5337 # ifdef FEAT_MBYTE | |
| 5338 /* Make sure the cursor is on the first byte of a multi-byte char. */ | |
| 5339 if (has_mbyte) | |
| 5340 mb_adjust_cursor(); | |
| 5341 # endif | |
| 5342 } | |
| 5343 #endif |