Mercurial > vim
annotate src/regexp.c @ 20030:dd4098fd958c
Added tag v8.2.0570 for changeset 8fb1cf4c44d5a3aff4be508bbc4338411d1cb5ce
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Mon, 13 Apr 2020 17:30:06 +0200 |
| parents | aadd1cae2ff5 |
| children | 2c23053c654a |
| rev | line source |
|---|---|
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commit https://github.com/vim/vim/commit/edf3f97ae2af024708ebb4ac614227327033ca47
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1 /* vi:set ts=8 sts=4 sw=4 noet: |
| 7 | 2 * |
| 3 * Handling of regular expressions: vim_regcomp(), vim_regexec(), vim_regsub() | |
| 4 */ | |
| 5 | |
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patch 8.1.1202: always get regexp debugging logs when building with -DDEBUG
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6 // By default: do not create debugging logs or files related to regular |
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patch 8.1.1202: always get regexp debugging logs when building with -DDEBUG
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7 // expressions, even when compiling with -DDEBUG. |
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8 // Uncomment the second line to get the regexp debugging. |
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9 #undef DEBUG |
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10 // #define DEBUG |
| 4444 | 11 |
| 7 | 12 #include "vim.h" |
| 13 | |
| 4444 | 14 #ifdef DEBUG |
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15 // show/save debugging data when BT engine is used |
| 4444 | 16 # define BT_REGEXP_DUMP |
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17 // save the debugging data to a file instead of displaying it |
| 4444 | 18 # define BT_REGEXP_LOG |
| 4460 | 19 # define BT_REGEXP_DEBUG_LOG |
| 20 # define BT_REGEXP_DEBUG_LOG_NAME "bt_regexp_debug.log" | |
| 4444 | 21 #endif |
| 7 | 22 |
| 23 /* | |
| 24 * Magic characters have a special meaning, they don't match literally. | |
| 25 * Magic characters are negative. This separates them from literal characters | |
| 26 * (possibly multi-byte). Only ASCII characters can be Magic. | |
| 27 */ | |
| 28 #define Magic(x) ((int)(x) - 256) | |
| 29 #define un_Magic(x) ((x) + 256) | |
| 30 #define is_Magic(x) ((x) < 0) | |
| 31 | |
| 32 static int | |
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33 no_Magic(int x) |
| 7 | 34 { |
| 35 if (is_Magic(x)) | |
| 36 return un_Magic(x); | |
| 37 return x; | |
| 38 } | |
| 39 | |
| 40 static int | |
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41 toggle_Magic(int x) |
| 7 | 42 { |
| 43 if (is_Magic(x)) | |
| 44 return un_Magic(x); | |
| 45 return Magic(x); | |
| 46 } | |
| 47 | |
| 48 /* | |
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patch 8.1.2005: the regexp.c file is too big
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49 * The first byte of the BT regexp internal "program" is actually this magic |
| 7 | 50 * number; the start node begins in the second byte. It's used to catch the |
| 51 * most severe mutilation of the program by the caller. | |
| 52 */ | |
| 53 | |
| 54 #define REGMAGIC 0234 | |
| 55 | |
| 56 /* | |
| 57 * Utility definitions. | |
| 58 */ | |
| 59 #define UCHARAT(p) ((int)*(char_u *)(p)) | |
| 60 | |
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61 // Used for an error (down from) vim_regcomp(): give the error message, set |
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62 // rc_did_emsg and return NULL |
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63 #define EMSG_RET_NULL(m) return (emsg((m)), rc_did_emsg = TRUE, (void *)NULL) |
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64 #define IEMSG_RET_NULL(m) return (iemsg((m)), rc_did_emsg = TRUE, (void *)NULL) |
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65 #define EMSG_RET_FAIL(m) return (emsg((m)), rc_did_emsg = TRUE, FAIL) |
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66 #define EMSG2_RET_NULL(m, c) return (semsg((const char *)(m), (c) ? "" : "\\"), rc_did_emsg = TRUE, (void *)NULL) |
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67 #define EMSG3_RET_NULL(m, c, a) return (semsg((const char *)(m), (c) ? "" : "\\", (a)), rc_did_emsg = TRUE, (void *)NULL) |
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68 #define EMSG2_RET_FAIL(m, c) return (semsg((const char *)(m), (c) ? "" : "\\"), rc_did_emsg = TRUE, FAIL) |
| 4444 | 69 #define EMSG_ONE_RET_NULL EMSG2_RET_NULL(_("E369: invalid item in %s%%[]"), reg_magic == MAGIC_ALL) |
| 7 | 70 |
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commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
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71 |
| 7 | 72 #define MAX_LIMIT (32767L << 16L) |
| 73 | |
| 4444 | 74 static char_u e_missingbracket[] = N_("E769: Missing ] after %s["); |
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patch 8.0.0623: error for invalid regexp is not very informative
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75 static char_u e_reverse_range[] = N_("E944: Reverse range in character class"); |
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76 static char_u e_large_class[] = N_("E945: Range too large in character class"); |
| 4444 | 77 static char_u e_unmatchedpp[] = N_("E53: Unmatched %s%%("); |
| 78 static char_u e_unmatchedp[] = N_("E54: Unmatched %s("); | |
| 79 static char_u e_unmatchedpar[] = N_("E55: Unmatched %s)"); | |
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80 #ifdef FEAT_SYN_HL |
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updated for version 7.3.1091
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81 static char_u e_z_not_allowed[] = N_("E66: \\z( not allowed here"); |
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patch 8.1.0098: segfault when pattern with z() is very slow
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82 static char_u e_z1_not_allowed[] = N_("E67: \\z1 - \\z9 not allowed here"); |
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83 #endif |
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updated for version 7.3.1119
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84 static char_u e_missing_sb[] = N_("E69: Missing ] after %s%%["); |
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85 static char_u e_empty_sb[] = N_("E70: Empty %s%%[]"); |
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patch 8.1.0192: executing regexp recursively fails with a crash
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86 static char_u e_recursive[] = N_("E956: Cannot use pattern recursively"); |
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87 |
| 7 | 88 #define NOT_MULTI 0 |
| 89 #define MULTI_ONE 1 | |
| 90 #define MULTI_MULT 2 | |
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91 |
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92 // return values for regmatch() |
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93 #define RA_FAIL 1 // something failed, abort |
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94 #define RA_CONT 2 // continue in inner loop |
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95 #define RA_BREAK 3 // break inner loop |
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96 #define RA_MATCH 4 // successful match |
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97 #define RA_NOMATCH 5 // didn't match |
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98 |
| 7 | 99 /* |
| 100 * Return NOT_MULTI if c is not a "multi" operator. | |
| 101 * Return MULTI_ONE if c is a single "multi" operator. | |
| 102 * Return MULTI_MULT if c is a multi "multi" operator. | |
| 103 */ | |
| 104 static int | |
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commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
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105 re_multi_type(int c) |
| 7 | 106 { |
| 107 if (c == Magic('@') || c == Magic('=') || c == Magic('?')) | |
| 108 return MULTI_ONE; | |
| 109 if (c == Magic('*') || c == Magic('+') || c == Magic('{')) | |
| 110 return MULTI_MULT; | |
| 111 return NOT_MULTI; | |
| 112 } | |
| 113 | |
| 359 | 114 static char_u *reg_prev_sub = NULL; |
| 115 | |
| 7 | 116 /* |
| 117 * REGEXP_INRANGE contains all characters which are always special in a [] | |
| 118 * range after '\'. | |
| 119 * REGEXP_ABBR contains all characters which act as abbreviations after '\'. | |
| 120 * These are: | |
| 121 * \n - New line (NL). | |
| 122 * \r - Carriage Return (CR). | |
| 123 * \t - Tab (TAB). | |
| 124 * \e - Escape (ESC). | |
| 125 * \b - Backspace (Ctrl_H). | |
| 24 | 126 * \d - Character code in decimal, eg \d123 |
| 127 * \o - Character code in octal, eg \o80 | |
| 128 * \x - Character code in hex, eg \x4a | |
| 129 * \u - Multibyte character code, eg \u20ac | |
| 130 * \U - Long multibyte character code, eg \U12345678 | |
| 7 | 131 */ |
| 132 static char_u REGEXP_INRANGE[] = "]^-n\\"; | |
| 24 | 133 static char_u REGEXP_ABBR[] = "nrtebdoxuU"; |
| 7 | 134 |
| 135 /* | |
| 136 * Translate '\x' to its control character, except "\n", which is Magic. | |
| 137 */ | |
| 138 static int | |
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139 backslash_trans(int c) |
| 7 | 140 { |
| 141 switch (c) | |
| 142 { | |
| 143 case 'r': return CAR; | |
| 144 case 't': return TAB; | |
| 145 case 'e': return ESC; | |
| 146 case 'b': return BS; | |
| 147 } | |
| 148 return c; | |
| 149 } | |
| 150 | |
| 151 /* | |
| 167 | 152 * Check for a character class name "[:name:]". "pp" points to the '['. |
| 7 | 153 * Returns one of the CLASS_ items. CLASS_NONE means that no item was |
| 154 * recognized. Otherwise "pp" is advanced to after the item. | |
| 155 */ | |
| 156 static int | |
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157 get_char_class(char_u **pp) |
| 7 | 158 { |
| 159 static const char *(class_names[]) = | |
| 160 { | |
| 161 "alnum:]", | |
| 162 #define CLASS_ALNUM 0 | |
| 163 "alpha:]", | |
| 164 #define CLASS_ALPHA 1 | |
| 165 "blank:]", | |
| 166 #define CLASS_BLANK 2 | |
| 167 "cntrl:]", | |
| 168 #define CLASS_CNTRL 3 | |
| 169 "digit:]", | |
| 170 #define CLASS_DIGIT 4 | |
| 171 "graph:]", | |
| 172 #define CLASS_GRAPH 5 | |
| 173 "lower:]", | |
| 174 #define CLASS_LOWER 6 | |
| 175 "print:]", | |
| 176 #define CLASS_PRINT 7 | |
| 177 "punct:]", | |
| 178 #define CLASS_PUNCT 8 | |
| 179 "space:]", | |
| 180 #define CLASS_SPACE 9 | |
| 181 "upper:]", | |
| 182 #define CLASS_UPPER 10 | |
| 183 "xdigit:]", | |
| 184 #define CLASS_XDIGIT 11 | |
| 185 "tab:]", | |
| 186 #define CLASS_TAB 12 | |
| 187 "return:]", | |
| 188 #define CLASS_RETURN 13 | |
| 189 "backspace:]", | |
| 190 #define CLASS_BACKSPACE 14 | |
| 191 "escape:]", | |
| 192 #define CLASS_ESCAPE 15 | |
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193 "ident:]", |
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194 #define CLASS_IDENT 16 |
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195 "keyword:]", |
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196 #define CLASS_KEYWORD 17 |
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197 "fname:]", |
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198 #define CLASS_FNAME 18 |
| 7 | 199 }; |
| 200 #define CLASS_NONE 99 | |
| 201 int i; | |
| 202 | |
| 203 if ((*pp)[1] == ':') | |
| 204 { | |
| 1877 | 205 for (i = 0; i < (int)(sizeof(class_names) / sizeof(*class_names)); ++i) |
| 7 | 206 if (STRNCMP(*pp + 2, class_names[i], STRLEN(class_names[i])) == 0) |
| 207 { | |
| 208 *pp += STRLEN(class_names[i]) + 2; | |
| 209 return i; | |
| 210 } | |
| 211 } | |
| 212 return CLASS_NONE; | |
| 213 } | |
| 214 | |
| 215 /* | |
| 216 * Specific version of character class functions. | |
| 217 * Using a table to keep this fast. | |
| 218 */ | |
| 219 static short class_tab[256]; | |
| 220 | |
| 221 #define RI_DIGIT 0x01 | |
| 222 #define RI_HEX 0x02 | |
| 223 #define RI_OCTAL 0x04 | |
| 224 #define RI_WORD 0x08 | |
| 225 #define RI_HEAD 0x10 | |
| 226 #define RI_ALPHA 0x20 | |
| 227 #define RI_LOWER 0x40 | |
| 228 #define RI_UPPER 0x80 | |
| 229 #define RI_WHITE 0x100 | |
| 230 | |
| 231 static void | |
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232 init_class_tab(void) |
| 7 | 233 { |
| 234 int i; | |
| 235 static int done = FALSE; | |
| 236 | |
| 237 if (done) | |
| 238 return; | |
| 239 | |
| 240 for (i = 0; i < 256; ++i) | |
| 241 { | |
| 242 if (i >= '0' && i <= '7') | |
| 243 class_tab[i] = RI_DIGIT + RI_HEX + RI_OCTAL + RI_WORD; | |
| 244 else if (i >= '8' && i <= '9') | |
| 245 class_tab[i] = RI_DIGIT + RI_HEX + RI_WORD; | |
| 246 else if (i >= 'a' && i <= 'f') | |
| 247 class_tab[i] = RI_HEX + RI_WORD + RI_HEAD + RI_ALPHA + RI_LOWER; | |
| 248 #ifdef EBCDIC | |
| 249 else if ((i >= 'g' && i <= 'i') || (i >= 'j' && i <= 'r') | |
| 250 || (i >= 's' && i <= 'z')) | |
| 251 #else | |
| 252 else if (i >= 'g' && i <= 'z') | |
| 253 #endif | |
| 254 class_tab[i] = RI_WORD + RI_HEAD + RI_ALPHA + RI_LOWER; | |
| 255 else if (i >= 'A' && i <= 'F') | |
| 256 class_tab[i] = RI_HEX + RI_WORD + RI_HEAD + RI_ALPHA + RI_UPPER; | |
| 257 #ifdef EBCDIC | |
| 258 else if ((i >= 'G' && i <= 'I') || ( i >= 'J' && i <= 'R') | |
| 259 || (i >= 'S' && i <= 'Z')) | |
| 260 #else | |
| 261 else if (i >= 'G' && i <= 'Z') | |
| 262 #endif | |
| 263 class_tab[i] = RI_WORD + RI_HEAD + RI_ALPHA + RI_UPPER; | |
| 264 else if (i == '_') | |
| 265 class_tab[i] = RI_WORD + RI_HEAD; | |
| 266 else | |
| 267 class_tab[i] = 0; | |
| 268 } | |
| 269 class_tab[' '] |= RI_WHITE; | |
| 270 class_tab['\t'] |= RI_WHITE; | |
| 271 done = TRUE; | |
| 272 } | |
| 273 | |
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274 #define ri_digit(c) (c < 0x100 && (class_tab[c] & RI_DIGIT)) |
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275 #define ri_hex(c) (c < 0x100 && (class_tab[c] & RI_HEX)) |
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276 #define ri_octal(c) (c < 0x100 && (class_tab[c] & RI_OCTAL)) |
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277 #define ri_word(c) (c < 0x100 && (class_tab[c] & RI_WORD)) |
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278 #define ri_head(c) (c < 0x100 && (class_tab[c] & RI_HEAD)) |
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279 #define ri_alpha(c) (c < 0x100 && (class_tab[c] & RI_ALPHA)) |
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280 #define ri_lower(c) (c < 0x100 && (class_tab[c] & RI_LOWER)) |
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281 #define ri_upper(c) (c < 0x100 && (class_tab[c] & RI_UPPER)) |
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282 #define ri_white(c) (c < 0x100 && (class_tab[c] & RI_WHITE)) |
| 7 | 283 |
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284 // flags for regflags |
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285 #define RF_ICASE 1 // ignore case |
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286 #define RF_NOICASE 2 // don't ignore case |
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287 #define RF_HASNL 4 // can match a NL |
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288 #define RF_ICOMBINE 8 // ignore combining characters |
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289 #define RF_LOOKBH 16 // uses "\@<=" or "\@<!" |
| 7 | 290 |
| 291 /* | |
| 292 * Global work variables for vim_regcomp(). | |
| 293 */ | |
| 294 | |
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295 static char_u *regparse; // Input-scan pointer. |
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296 static int regnpar; // () count. |
| 7 | 297 #ifdef FEAT_SYN_HL |
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298 static int regnzpar; // \z() count. |
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299 static int re_has_z; // \z item detected |
| 7 | 300 #endif |
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301 static unsigned regflags; // RF_ flags for prog |
| 7 | 302 #if defined(FEAT_SYN_HL) || defined(PROTO) |
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303 static int had_eol; // TRUE when EOL found by vim_regcomp() |
| 7 | 304 #endif |
| 305 | |
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306 static int reg_magic; // magicness of the pattern: |
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307 #define MAGIC_NONE 1 // "\V" very unmagic |
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308 #define MAGIC_OFF 2 // "\M" or 'magic' off |
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309 #define MAGIC_ON 3 // "\m" or 'magic' |
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310 #define MAGIC_ALL 4 // "\v" very magic |
| 7 | 311 |
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312 static int reg_string; // matching with a string instead of a buffer |
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313 // line |
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314 static int reg_strict; // "[abc" is illegal |
| 7 | 315 |
| 316 /* | |
| 317 * META contains all characters that may be magic, except '^' and '$'. | |
| 318 */ | |
| 319 | |
| 320 #ifdef EBCDIC | |
| 321 static char_u META[] = "%&()*+.123456789<=>?@ACDFHIKLMOPSUVWX[_acdfhiklmnopsuvwxz{|~"; | |
| 322 #else | |
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323 // META[] is used often enough to justify turning it into a table. |
| 7 | 324 static char_u META_flags[] = { |
| 325 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
| 326 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
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327 // % & ( ) * + . |
| 7 | 328 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 1, 1, 0, 0, 1, 0, |
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329 // 1 2 3 4 5 6 7 8 9 < = > ? |
| 7 | 330 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, |
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331 // @ A C D F H I K L M O |
| 7 | 332 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, |
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333 // P S U V W X Z [ _ |
| 7 | 334 1, 0, 0, 1, 0, 1, 1, 1, 1, 0, 1, 1, 0, 0, 0, 1, |
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335 // a c d f h i k l m n o |
| 7 | 336 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1, |
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337 // p s u v w x z { | ~ |
| 7 | 338 1, 0, 0, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1 |
| 339 }; | |
| 340 #endif | |
| 341 | |
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342 static int curchr; // currently parsed character |
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343 // Previous character. Note: prevchr is sometimes -1 when we are not at the |
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344 // start, eg in /[ ^I]^ the pattern was never found even if it existed, |
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345 // because ^ was taken to be magic -- webb |
| 4444 | 346 static int prevchr; |
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347 static int prevprevchr; // previous-previous character |
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348 static int nextchr; // used for ungetchr() |
| 7 | 349 |
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350 // arguments for reg() |
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351 #define REG_NOPAREN 0 // toplevel reg() |
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352 #define REG_PAREN 1 // \(\) |
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353 #define REG_ZPAREN 2 // \z(\) |
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354 #define REG_NPAREN 3 // \%(\) |
| 7 | 355 |
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356 typedef struct |
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357 { |
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358 char_u *regparse; |
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359 int prevchr_len; |
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360 int curchr; |
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361 int prevchr; |
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362 int prevprevchr; |
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363 int nextchr; |
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364 int at_start; |
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365 int prev_at_start; |
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366 int regnpar; |
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367 } parse_state_T; |
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368 |
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369 static void initchr(char_u *); |
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370 static int getchr(void); |
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371 static void skipchr_keepstart(void); |
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372 static int peekchr(void); |
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373 static void skipchr(void); |
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374 static void ungetchr(void); |
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375 static long gethexchrs(int maxinputlen); |
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376 static long getoctchrs(void); |
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377 static long getdecchrs(void); |
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378 static int coll_get_char(void); |
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379 static int prog_magic_wrong(void); |
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380 static int cstrncmp(char_u *s1, char_u *s2, int *n); |
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381 static char_u *cstrchr(char_u *, int); |
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382 static int re_mult_next(char *what); |
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383 static int reg_iswordc(int); |
| 7 | 384 |
| 4444 | 385 static regengine_T bt_regengine; |
| 386 static regengine_T nfa_regengine; | |
| 387 | |
| 7 | 388 /* |
| 389 * Return TRUE if compiled regular expression "prog" can match a line break. | |
| 390 */ | |
| 391 int | |
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392 re_multiline(regprog_T *prog) |
| 7 | 393 { |
| 394 return (prog->regflags & RF_HASNL); | |
| 395 } | |
| 396 | |
| 397 /* | |
| 167 | 398 * Check for an equivalence class name "[=a=]". "pp" points to the '['. |
| 399 * Returns a character representing the class. Zero means that no item was | |
| 400 * recognized. Otherwise "pp" is advanced to after the item. | |
| 401 */ | |
| 402 static int | |
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403 get_equi_class(char_u **pp) |
| 167 | 404 { |
| 405 int c; | |
| 406 int l = 1; | |
| 407 char_u *p = *pp; | |
| 408 | |
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409 if (p[1] == '=' && p[2] != NUL) |
| 167 | 410 { |
| 411 if (has_mbyte) | |
| 474 | 412 l = (*mb_ptr2len)(p + 2); |
| 167 | 413 if (p[l + 2] == '=' && p[l + 3] == ']') |
| 414 { | |
| 415 if (has_mbyte) | |
| 416 c = mb_ptr2char(p + 2); | |
| 417 else | |
| 418 c = p[2]; | |
| 419 *pp += l + 4; | |
| 420 return c; | |
| 421 } | |
| 422 } | |
| 423 return 0; | |
| 424 } | |
| 425 | |
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426 #ifdef EBCDIC |
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427 /* |
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428 * Table for equivalence class "c". (IBM-1047) |
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429 */ |
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430 static char *EQUIVAL_CLASS_C[16] = { |
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431 "A\x62\x63\x64\x65\x66\x67", |
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432 "C\x68", |
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433 "E\x71\x72\x73\x74", |
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434 "I\x75\x76\x77\x78", |
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435 "N\x69", |
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436 "O\xEB\xEC\xED\xEE\xEF\x80", |
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437 "U\xFB\xFC\xFD\xFE", |
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438 "Y\xBA", |
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439 "a\x42\x43\x44\x45\x46\x47", |
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440 "c\x48", |
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441 "e\x51\x52\x53\x54", |
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442 "i\x55\x56\x57\x58", |
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443 "n\x49", |
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444 "o\xCB\xCC\xCD\xCE\xCF\x70", |
|
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445 "u\xDB\xDC\xDD\xDE", |
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446 "y\x8D\xDF", |
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447 }; |
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448 #endif |
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449 |
| 167 | 450 /* |
| 451 * Check for a collating element "[.a.]". "pp" points to the '['. | |
| 452 * Returns a character. Zero means that no item was recognized. Otherwise | |
| 453 * "pp" is advanced to after the item. | |
| 454 * Currently only single characters are recognized! | |
| 455 */ | |
| 456 static int | |
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457 get_coll_element(char_u **pp) |
| 167 | 458 { |
| 459 int c; | |
| 460 int l = 1; | |
| 461 char_u *p = *pp; | |
| 462 | |
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463 if (p[0] != NUL && p[1] == '.' && p[2] != NUL) |
| 167 | 464 { |
| 465 if (has_mbyte) | |
| 474 | 466 l = (*mb_ptr2len)(p + 2); |
| 167 | 467 if (p[l + 2] == '.' && p[l + 3] == ']') |
| 468 { | |
| 469 if (has_mbyte) | |
| 470 c = mb_ptr2char(p + 2); | |
| 471 else | |
| 472 c = p[2]; | |
| 473 *pp += l + 4; | |
| 474 return c; | |
| 475 } | |
| 476 } | |
| 477 return 0; | |
| 478 } | |
| 479 | |
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480 static int reg_cpo_lit; // 'cpoptions' contains 'l' flag |
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481 static int reg_cpo_bsl; // 'cpoptions' contains '\' flag |
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482 |
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483 static void |
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484 get_cpo_flags(void) |
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485 { |
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486 reg_cpo_lit = vim_strchr(p_cpo, CPO_LITERAL) != NULL; |
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487 reg_cpo_bsl = vim_strchr(p_cpo, CPO_BACKSL) != NULL; |
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488 } |
| 167 | 489 |
| 490 /* | |
| 491 * Skip over a "[]" range. | |
| 492 * "p" must point to the character after the '['. | |
| 493 * The returned pointer is on the matching ']', or the terminating NUL. | |
| 494 */ | |
| 495 static char_u * | |
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496 skip_anyof(char_u *p) |
| 167 | 497 { |
| 498 int l; | |
| 499 | |
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500 if (*p == '^') // Complement of range. |
| 167 | 501 ++p; |
| 502 if (*p == ']' || *p == '-') | |
| 503 ++p; | |
| 504 while (*p != NUL && *p != ']') | |
| 505 { | |
| 474 | 506 if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1) |
| 167 | 507 p += l; |
| 508 else | |
| 509 if (*p == '-') | |
| 510 { | |
| 511 ++p; | |
| 512 if (*p != ']' && *p != NUL) | |
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513 MB_PTR_ADV(p); |
| 167 | 514 } |
| 515 else if (*p == '\\' | |
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516 && !reg_cpo_bsl |
| 167 | 517 && (vim_strchr(REGEXP_INRANGE, p[1]) != NULL |
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518 || (!reg_cpo_lit && vim_strchr(REGEXP_ABBR, p[1]) != NULL))) |
| 167 | 519 p += 2; |
| 520 else if (*p == '[') | |
| 521 { | |
| 522 if (get_char_class(&p) == CLASS_NONE | |
| 523 && get_equi_class(&p) == 0 | |
| 6830 | 524 && get_coll_element(&p) == 0 |
| 525 && *p != NUL) | |
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526 ++p; // it is not a class name and not NUL |
| 167 | 527 } |
| 528 else | |
| 529 ++p; | |
| 530 } | |
| 531 | |
| 532 return p; | |
| 533 } | |
| 534 | |
| 535 /* | |
| 7 | 536 * Skip past regular expression. |
| 153 | 537 * Stop at end of "startp" or where "dirc" is found ('/', '?', etc). |
| 7 | 538 * Take care of characters with a backslash in front of it. |
| 539 * Skip strings inside [ and ]. | |
| 540 */ | |
| 541 char_u * | |
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542 skip_regexp( |
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543 char_u *startp, |
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544 int dirc, |
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545 int magic) |
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546 { |
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547 return skip_regexp_ex(startp, dirc, magic, NULL, NULL); |
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548 } |
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549 |
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550 /* |
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551 * skip_regexp() with extra arguments: |
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552 * When "newp" is not NULL and "dirc" is '?', make an allocated copy of the |
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553 * expression and change "\?" to "?". If "*newp" is not NULL the expression |
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554 * is changed in-place. |
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555 * If a "\?" is changed to "?" then "dropped" is incremented, unless NULL. |
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556 */ |
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557 char_u * |
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558 skip_regexp_ex( |
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559 char_u *startp, |
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560 int dirc, |
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561 int magic, |
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562 char_u **newp, |
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563 int *dropped) |
| 7 | 564 { |
| 565 int mymagic; | |
| 566 char_u *p = startp; | |
| 567 | |
| 568 if (magic) | |
| 569 mymagic = MAGIC_ON; | |
| 570 else | |
| 571 mymagic = MAGIC_OFF; | |
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572 get_cpo_flags(); |
| 7 | 573 |
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574 for (; p[0] != NUL; MB_PTR_ADV(p)) |
| 7 | 575 { |
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576 if (p[0] == dirc) // found end of regexp |
| 7 | 577 break; |
| 578 if ((p[0] == '[' && mymagic >= MAGIC_ON) | |
| 579 || (p[0] == '\\' && p[1] == '[' && mymagic <= MAGIC_OFF)) | |
| 580 { | |
| 581 p = skip_anyof(p + 1); | |
| 582 if (p[0] == NUL) | |
| 583 break; | |
| 584 } | |
| 585 else if (p[0] == '\\' && p[1] != NUL) | |
| 586 { | |
| 587 if (dirc == '?' && newp != NULL && p[1] == '?') | |
| 588 { | |
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589 // change "\?" to "?", make a copy first. |
| 7 | 590 if (*newp == NULL) |
| 591 { | |
| 592 *newp = vim_strsave(startp); | |
| 593 if (*newp != NULL) | |
| 594 p = *newp + (p - startp); | |
| 595 } | |
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596 if (dropped != NULL) |
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597 ++*dropped; |
| 7 | 598 if (*newp != NULL) |
| 1621 | 599 STRMOVE(p, p + 1); |
| 7 | 600 else |
| 601 ++p; | |
| 602 } | |
| 603 else | |
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604 ++p; // skip next character |
| 7 | 605 if (*p == 'v') |
| 606 mymagic = MAGIC_ALL; | |
| 607 else if (*p == 'V') | |
| 608 mymagic = MAGIC_NONE; | |
| 609 } | |
| 610 } | |
| 611 return p; | |
| 612 } | |
| 613 | |
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614 /* |
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615 * Functions for getting characters from the regexp input. |
| 7 | 616 */ |
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617 static int prevchr_len; // byte length of previous char |
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618 static int at_start; // True when on the first character |
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619 static int prev_at_start; // True when on the second character |
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620 |
| 7 | 621 /* |
| 4444 | 622 * Start parsing at "str". |
| 623 */ | |
| 7 | 624 static void |
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625 initchr(char_u *str) |
| 7 | 626 { |
| 627 regparse = str; | |
| 628 prevchr_len = 0; | |
| 629 curchr = prevprevchr = prevchr = nextchr = -1; | |
| 630 at_start = TRUE; | |
| 631 prev_at_start = FALSE; | |
| 632 } | |
| 633 | |
| 4444 | 634 /* |
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635 * Save the current parse state, so that it can be restored and parsing |
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636 * starts in the same state again. |
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637 */ |
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638 static void |
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639 save_parse_state(parse_state_T *ps) |
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640 { |
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641 ps->regparse = regparse; |
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642 ps->prevchr_len = prevchr_len; |
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643 ps->curchr = curchr; |
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644 ps->prevchr = prevchr; |
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645 ps->prevprevchr = prevprevchr; |
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646 ps->nextchr = nextchr; |
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647 ps->at_start = at_start; |
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648 ps->prev_at_start = prev_at_start; |
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649 ps->regnpar = regnpar; |
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650 } |
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651 |
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652 /* |
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653 * Restore a previously saved parse state. |
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654 */ |
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655 static void |
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656 restore_parse_state(parse_state_T *ps) |
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657 { |
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658 regparse = ps->regparse; |
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659 prevchr_len = ps->prevchr_len; |
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660 curchr = ps->curchr; |
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661 prevchr = ps->prevchr; |
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662 prevprevchr = ps->prevprevchr; |
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663 nextchr = ps->nextchr; |
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664 at_start = ps->at_start; |
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665 prev_at_start = ps->prev_at_start; |
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666 regnpar = ps->regnpar; |
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667 } |
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668 |
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669 |
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670 /* |
| 4444 | 671 * Get the next character without advancing. |
| 672 */ | |
| 7 | 673 static int |
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674 peekchr(void) |
| 7 | 675 { |
| 167 | 676 static int after_slash = FALSE; |
| 677 | |
| 7 | 678 if (curchr == -1) |
| 679 { | |
| 680 switch (curchr = regparse[0]) | |
| 681 { | |
| 682 case '.': | |
| 683 case '[': | |
| 684 case '~': | |
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685 // magic when 'magic' is on |
| 7 | 686 if (reg_magic >= MAGIC_ON) |
| 687 curchr = Magic(curchr); | |
| 688 break; | |
| 689 case '(': | |
| 690 case ')': | |
| 691 case '{': | |
| 692 case '%': | |
| 693 case '+': | |
| 694 case '=': | |
| 695 case '?': | |
| 696 case '@': | |
| 697 case '!': | |
| 698 case '&': | |
| 699 case '|': | |
| 700 case '<': | |
| 701 case '>': | |
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702 case '#': // future ext. |
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703 case '"': // future ext. |
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704 case '\'': // future ext. |
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705 case ',': // future ext. |
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706 case '-': // future ext. |
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707 case ':': // future ext. |
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708 case ';': // future ext. |
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709 case '`': // future ext. |
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710 case '/': // Can't be used in / command |
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711 // magic only after "\v" |
| 7 | 712 if (reg_magic == MAGIC_ALL) |
| 713 curchr = Magic(curchr); | |
| 714 break; | |
| 715 case '*': | |
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716 // * is not magic as the very first character, eg "?*ptr", when |
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717 // after '^', eg "/^*ptr" and when after "\(", "\|", "\&". But |
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718 // "\(\*" is not magic, thus must be magic if "after_slash" |
| 167 | 719 if (reg_magic >= MAGIC_ON |
| 720 && !at_start | |
| 721 && !(prev_at_start && prevchr == Magic('^')) | |
| 722 && (after_slash | |
| 723 || (prevchr != Magic('(') | |
| 724 && prevchr != Magic('&') | |
| 725 && prevchr != Magic('|')))) | |
| 7 | 726 curchr = Magic('*'); |
| 727 break; | |
| 728 case '^': | |
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729 // '^' is only magic as the very first character and if it's after |
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730 // "\(", "\|", "\&' or "\n" |
| 7 | 731 if (reg_magic >= MAGIC_OFF |
| 732 && (at_start | |
| 733 || reg_magic == MAGIC_ALL | |
| 734 || prevchr == Magic('(') | |
| 735 || prevchr == Magic('|') | |
| 736 || prevchr == Magic('&') | |
| 737 || prevchr == Magic('n') | |
| 738 || (no_Magic(prevchr) == '(' | |
| 739 && prevprevchr == Magic('%')))) | |
| 740 { | |
| 741 curchr = Magic('^'); | |
| 742 at_start = TRUE; | |
| 743 prev_at_start = FALSE; | |
| 744 } | |
| 745 break; | |
| 746 case '$': | |
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747 // '$' is only magic as the very last char and if it's in front of |
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748 // either "\|", "\)", "\&", or "\n" |
| 7 | 749 if (reg_magic >= MAGIC_OFF) |
| 750 { | |
| 751 char_u *p = regparse + 1; | |
| 6041 | 752 int is_magic_all = (reg_magic == MAGIC_ALL); |
| 753 | |
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754 // ignore \c \C \m \M \v \V and \Z after '$' |
| 7 | 755 while (p[0] == '\\' && (p[1] == 'c' || p[1] == 'C' |
| 6041 | 756 || p[1] == 'm' || p[1] == 'M' |
| 757 || p[1] == 'v' || p[1] == 'V' || p[1] == 'Z')) | |
| 758 { | |
| 759 if (p[1] == 'v') | |
| 760 is_magic_all = TRUE; | |
| 761 else if (p[1] == 'm' || p[1] == 'M' || p[1] == 'V') | |
| 762 is_magic_all = FALSE; | |
| 7 | 763 p += 2; |
| 6041 | 764 } |
| 7 | 765 if (p[0] == NUL |
| 766 || (p[0] == '\\' | |
| 767 && (p[1] == '|' || p[1] == '&' || p[1] == ')' | |
| 768 || p[1] == 'n')) | |
| 6041 | 769 || (is_magic_all |
| 770 && (p[0] == '|' || p[0] == '&' || p[0] == ')')) | |
| 7 | 771 || reg_magic == MAGIC_ALL) |
| 772 curchr = Magic('$'); | |
| 773 } | |
| 774 break; | |
| 775 case '\\': | |
| 776 { | |
| 777 int c = regparse[1]; | |
| 778 | |
| 779 if (c == NUL) | |
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780 curchr = '\\'; // trailing '\' |
| 7 | 781 else if ( |
| 782 #ifdef EBCDIC | |
| 783 vim_strchr(META, c) | |
| 784 #else | |
| 785 c <= '~' && META_flags[c] | |
| 786 #endif | |
| 787 ) | |
| 788 { | |
| 789 /* | |
| 790 * META contains everything that may be magic sometimes, | |
| 791 * except ^ and $ ("\^" and "\$" are only magic after | |
| 6830 | 792 * "\V"). We now fetch the next character and toggle its |
| 7 | 793 * magicness. Therefore, \ is so meta-magic that it is |
| 794 * not in META. | |
| 795 */ | |
| 796 curchr = -1; | |
| 797 prev_at_start = at_start; | |
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798 at_start = FALSE; // be able to say "/\*ptr" |
| 7 | 799 ++regparse; |
| 167 | 800 ++after_slash; |
| 7 | 801 peekchr(); |
| 802 --regparse; | |
| 167 | 803 --after_slash; |
| 7 | 804 curchr = toggle_Magic(curchr); |
| 805 } | |
| 806 else if (vim_strchr(REGEXP_ABBR, c)) | |
| 807 { | |
| 808 /* | |
| 809 * Handle abbreviations, like "\t" for TAB -- webb | |
| 810 */ | |
| 811 curchr = backslash_trans(c); | |
| 812 } | |
| 813 else if (reg_magic == MAGIC_NONE && (c == '$' || c == '^')) | |
| 814 curchr = toggle_Magic(c); | |
| 815 else | |
| 816 { | |
| 817 /* | |
| 818 * Next character can never be (made) magic? | |
| 819 * Then backslashing it won't do anything. | |
| 820 */ | |
| 821 if (has_mbyte) | |
| 822 curchr = (*mb_ptr2char)(regparse + 1); | |
| 823 else | |
| 824 curchr = c; | |
| 825 } | |
| 826 break; | |
| 827 } | |
| 828 | |
| 829 default: | |
| 830 if (has_mbyte) | |
| 831 curchr = (*mb_ptr2char)(regparse); | |
| 832 } | |
| 833 } | |
| 834 | |
| 835 return curchr; | |
| 836 } | |
| 837 | |
| 838 /* | |
| 839 * Eat one lexed character. Do this in a way that we can undo it. | |
| 840 */ | |
| 841 static void | |
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842 skipchr(void) |
| 7 | 843 { |
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844 // peekchr() eats a backslash, do the same here |
| 7 | 845 if (*regparse == '\\') |
| 846 prevchr_len = 1; | |
| 847 else | |
| 848 prevchr_len = 0; | |
| 849 if (regparse[prevchr_len] != NUL) | |
| 850 { | |
| 714 | 851 if (enc_utf8) |
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852 // exclude composing chars that mb_ptr2len does include |
| 1449 | 853 prevchr_len += utf_ptr2len(regparse + prevchr_len); |
| 714 | 854 else if (has_mbyte) |
| 474 | 855 prevchr_len += (*mb_ptr2len)(regparse + prevchr_len); |
| 7 | 856 else |
| 857 ++prevchr_len; | |
| 858 } | |
| 859 regparse += prevchr_len; | |
| 860 prev_at_start = at_start; | |
| 861 at_start = FALSE; | |
| 862 prevprevchr = prevchr; | |
| 863 prevchr = curchr; | |
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864 curchr = nextchr; // use previously unget char, or -1 |
| 7 | 865 nextchr = -1; |
| 866 } | |
| 867 | |
| 868 /* | |
| 869 * Skip a character while keeping the value of prev_at_start for at_start. | |
| 870 * prevchr and prevprevchr are also kept. | |
| 871 */ | |
| 872 static void | |
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873 skipchr_keepstart(void) |
| 7 | 874 { |
| 875 int as = prev_at_start; | |
| 876 int pr = prevchr; | |
| 877 int prpr = prevprevchr; | |
| 878 | |
| 879 skipchr(); | |
| 880 at_start = as; | |
| 881 prevchr = pr; | |
| 882 prevprevchr = prpr; | |
| 883 } | |
| 884 | |
| 4444 | 885 /* |
| 886 * Get the next character from the pattern. We know about magic and such, so | |
| 887 * therefore we need a lexical analyzer. | |
| 888 */ | |
| 7 | 889 static int |
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890 getchr(void) |
| 7 | 891 { |
| 892 int chr = peekchr(); | |
| 893 | |
| 894 skipchr(); | |
| 895 return chr; | |
| 896 } | |
| 897 | |
| 898 /* | |
| 899 * put character back. Works only once! | |
| 900 */ | |
| 901 static void | |
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902 ungetchr(void) |
| 7 | 903 { |
| 904 nextchr = curchr; | |
| 905 curchr = prevchr; | |
| 906 prevchr = prevprevchr; | |
| 907 at_start = prev_at_start; | |
| 908 prev_at_start = FALSE; | |
| 909 | |
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910 // Backup regparse, so that it's at the same position as before the |
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911 // getchr(). |
| 7 | 912 regparse -= prevchr_len; |
| 913 } | |
| 914 | |
| 915 /* | |
| 29 | 916 * Get and return the value of the hex string at the current position. |
| 917 * Return -1 if there is no valid hex number. | |
| 918 * The position is updated: | |
| 24 | 919 * blahblah\%x20asdf |
| 856 | 920 * before-^ ^-after |
| 24 | 921 * The parameter controls the maximum number of input characters. This will be |
| 922 * 2 when reading a \%x20 sequence and 4 when reading a \%u20AC sequence. | |
| 923 */ | |
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924 static long |
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925 gethexchrs(int maxinputlen) |
| 24 | 926 { |
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927 long_u nr = 0; |
| 24 | 928 int c; |
| 929 int i; | |
| 930 | |
| 931 for (i = 0; i < maxinputlen; ++i) | |
| 932 { | |
| 933 c = regparse[0]; | |
| 934 if (!vim_isxdigit(c)) | |
| 935 break; | |
| 936 nr <<= 4; | |
| 937 nr |= hex2nr(c); | |
| 938 ++regparse; | |
| 939 } | |
| 940 | |
| 941 if (i == 0) | |
| 942 return -1; | |
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943 return (long)nr; |
| 24 | 944 } |
| 945 | |
| 946 /* | |
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947 * Get and return the value of the decimal string immediately after the |
| 24 | 948 * current position. Return -1 for invalid. Consumes all digits. |
| 949 */ | |
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950 static long |
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951 getdecchrs(void) |
| 24 | 952 { |
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953 long_u nr = 0; |
| 24 | 954 int c; |
| 955 int i; | |
| 956 | |
| 957 for (i = 0; ; ++i) | |
| 958 { | |
| 959 c = regparse[0]; | |
| 960 if (c < '0' || c > '9') | |
| 961 break; | |
| 962 nr *= 10; | |
| 963 nr += c - '0'; | |
| 964 ++regparse; | |
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965 curchr = -1; // no longer valid |
| 24 | 966 } |
| 967 | |
| 968 if (i == 0) | |
| 969 return -1; | |
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970 return (long)nr; |
| 24 | 971 } |
| 972 | |
| 973 /* | |
| 974 * get and return the value of the octal string immediately after the current | |
| 975 * position. Return -1 for invalid, or 0-255 for valid. Smart enough to handle | |
| 976 * numbers > 377 correctly (for example, 400 is treated as 40) and doesn't | |
| 977 * treat 8 or 9 as recognised characters. Position is updated: | |
| 978 * blahblah\%o210asdf | |
| 856 | 979 * before-^ ^-after |
| 24 | 980 */ |
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981 static long |
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982 getoctchrs(void) |
| 24 | 983 { |
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984 long_u nr = 0; |
| 24 | 985 int c; |
| 986 int i; | |
| 987 | |
| 988 for (i = 0; i < 3 && nr < 040; ++i) | |
| 989 { | |
| 990 c = regparse[0]; | |
| 991 if (c < '0' || c > '7') | |
| 992 break; | |
| 993 nr <<= 3; | |
| 994 nr |= hex2nr(c); | |
| 995 ++regparse; | |
| 996 } | |
| 997 | |
| 998 if (i == 0) | |
| 999 return -1; | |
|
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1000 return (long)nr; |
| 24 | 1001 } |
| 1002 | |
| 1003 /* | |
| 7 | 1004 * read_limits - Read two integers to be taken as a minimum and maximum. |
| 1005 * If the first character is '-', then the range is reversed. | |
| 1006 * Should end with 'end'. If minval is missing, zero is default, if maxval is | |
| 1007 * missing, a very big number is the default. | |
| 1008 */ | |
| 1009 static int | |
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1010 read_limits(long *minval, long *maxval) |
| 7 | 1011 { |
| 1012 int reverse = FALSE; | |
| 1013 char_u *first_char; | |
| 1014 long tmp; | |
| 1015 | |
| 1016 if (*regparse == '-') | |
| 1017 { | |
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1018 // Starts with '-', so reverse the range later |
| 7 | 1019 regparse++; |
| 1020 reverse = TRUE; | |
| 1021 } | |
| 1022 first_char = regparse; | |
| 1023 *minval = getdigits(®parse); | |
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1024 if (*regparse == ',') // There is a comma |
| 7 | 1025 { |
| 1026 if (vim_isdigit(*++regparse)) | |
| 1027 *maxval = getdigits(®parse); | |
| 1028 else | |
| 1029 *maxval = MAX_LIMIT; | |
| 1030 } | |
| 1031 else if (VIM_ISDIGIT(*first_char)) | |
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1032 *maxval = *minval; // It was \{n} or \{-n} |
| 7 | 1033 else |
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1034 *maxval = MAX_LIMIT; // It was \{} or \{-} |
| 7 | 1035 if (*regparse == '\\') |
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1036 regparse++; // Allow either \{...} or \{...\} |
| 167 | 1037 if (*regparse != '}') |
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1038 EMSG2_RET_FAIL(_("E554: Syntax error in %s{...}"), |
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1039 reg_magic == MAGIC_ALL); |
| 7 | 1040 |
| 1041 /* | |
| 1042 * Reverse the range if there was a '-', or make sure it is in the right | |
| 1043 * order otherwise. | |
| 1044 */ | |
| 1045 if ((!reverse && *minval > *maxval) || (reverse && *minval < *maxval)) | |
| 1046 { | |
| 1047 tmp = *minval; | |
| 1048 *minval = *maxval; | |
| 1049 *maxval = tmp; | |
| 1050 } | |
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1051 skipchr(); // let's be friends with the lexer again |
| 7 | 1052 return OK; |
| 1053 } | |
| 1054 | |
| 1055 /* | |
| 1056 * vim_regexec and friends | |
| 1057 */ | |
| 1058 | |
| 1059 /* | |
| 1060 * Global work variables for vim_regexec(). | |
| 1061 */ | |
| 1062 | |
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1063 static void cleanup_subexpr(void); |
| 7 | 1064 #ifdef FEAT_SYN_HL |
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1065 static void cleanup_zsubexpr(void); |
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1066 #endif |
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1067 static void reg_nextline(void); |
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1068 static int match_with_backref(linenr_T start_lnum, colnr_T start_col, linenr_T end_lnum, colnr_T end_col, int *bytelen); |
| 7 | 1069 |
| 1070 /* | |
| 1071 * Sometimes need to save a copy of a line. Since alloc()/free() is very | |
| 1072 * slow, we keep one allocated piece of memory and only re-allocate it when | |
| 4444 | 1073 * it's too small. It's freed in bt_regexec_both() when finished. |
| 7 | 1074 */ |
| 1468 | 1075 static char_u *reg_tofree = NULL; |
| 7 | 1076 static unsigned reg_tofreelen; |
| 1077 | |
| 1078 /* | |
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1079 * Structure used to store the execution state of the regex engine. |
| 1209 | 1080 * Which ones are set depends on whether a single-line or multi-line match is |
| 7 | 1081 * done: |
| 1082 * single-line multi-line | |
| 1083 * reg_match ®match_T NULL | |
| 1084 * reg_mmatch NULL ®mmatch_T | |
| 1085 * reg_startp reg_match->startp <invalid> | |
| 1086 * reg_endp reg_match->endp <invalid> | |
| 1087 * reg_startpos <invalid> reg_mmatch->startpos | |
| 1088 * reg_endpos <invalid> reg_mmatch->endpos | |
| 1089 * reg_win NULL window in which to search | |
| 4061 | 1090 * reg_buf curbuf buffer in which to search |
| 7 | 1091 * reg_firstlnum <invalid> first line in which to search |
| 1092 * reg_maxline 0 last line nr | |
| 1093 * reg_line_lbr FALSE or TRUE FALSE | |
| 1094 */ | |
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1095 typedef struct { |
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1096 regmatch_T *reg_match; |
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1097 regmmatch_T *reg_mmatch; |
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1098 char_u **reg_startp; |
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1099 char_u **reg_endp; |
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1100 lpos_T *reg_startpos; |
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1101 lpos_T *reg_endpos; |
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1102 win_T *reg_win; |
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1103 buf_T *reg_buf; |
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1104 linenr_T reg_firstlnum; |
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1105 linenr_T reg_maxline; |
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1106 int reg_line_lbr; // "\n" in string is line break |
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1107 |
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1108 // The current match-position is stord in these variables: |
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1109 linenr_T lnum; // line number, relative to first line |
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1110 char_u *line; // start of current line |
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1111 char_u *input; // current input, points into "regline" |
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1112 |
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1113 int need_clear_subexpr; // subexpressions still need to be cleared |
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1114 #ifdef FEAT_SYN_HL |
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1115 int need_clear_zsubexpr; // extmatch subexpressions still need to be |
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1116 // cleared |
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1117 #endif |
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1118 |
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1119 // Internal copy of 'ignorecase'. It is set at each call to vim_regexec(). |
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1120 // Normally it gets the value of "rm_ic" or "rmm_ic", but when the pattern |
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1121 // contains '\c' or '\C' the value is overruled. |
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1122 int reg_ic; |
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1123 |
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1124 // Similar to "reg_ic", but only for 'combining' characters. Set with \Z |
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1125 // flag in the regexp. Defaults to false, always. |
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1126 int reg_icombine; |
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1127 |
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1128 // Copy of "rmm_maxcol": maximum column to search for a match. Zero when |
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1129 // there is no maximum. |
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1130 colnr_T reg_maxcol; |
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1131 |
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1132 // State for the NFA engine regexec. |
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1133 int nfa_has_zend; // NFA regexp \ze operator encountered. |
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1134 int nfa_has_backref; // NFA regexp \1 .. \9 encountered. |
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1135 int nfa_nsubexpr; // Number of sub expressions actually being used |
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1136 // during execution. 1 if only the whole match |
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1137 // (subexpr 0) is used. |
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1138 // listid is global, so that it increases on recursive calls to |
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1139 // nfa_regmatch(), which means we don't have to clear the lastlist field of |
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1140 // all the states. |
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1141 int nfa_listid; |
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1142 int nfa_alt_listid; |
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1143 |
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1144 #ifdef FEAT_SYN_HL |
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1145 int nfa_has_zsubexpr; // NFA regexp has \z( ), set zsubexpr. |
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1146 #endif |
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1147 } regexec_T; |
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1148 |
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1149 static regexec_T rex; |
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1150 static int rex_in_use = FALSE; |
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1151 |
| 7 | 1152 /* |
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1153 * Return TRUE if character 'c' is included in 'iskeyword' option for |
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1154 * "reg_buf" buffer. |
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1155 */ |
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1156 static int |
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1157 reg_iswordc(int c) |
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1158 { |
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1159 return vim_iswordc_buf(c, rex.reg_buf); |
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|
1160 } |
|
2e2f07561f4b
patch 8.1.0862: no verbose version of character classes
Bram Moolenaar <Bram@vim.org>
parents:
15603
diff
changeset
|
1161 |
|
2e2f07561f4b
patch 8.1.0862: no verbose version of character classes
Bram Moolenaar <Bram@vim.org>
parents:
15603
diff
changeset
|
1162 /* |
| 7 | 1163 * Get pointer to the line "lnum", which is relative to "reg_firstlnum". |
| 1164 */ | |
| 1165 static char_u * | |
|
7833
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Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
1166 reg_getline(linenr_T lnum) |
| 7 | 1167 { |
|
18812
d34ec6fe207d
patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18576
diff
changeset
|
1168 // when looking behind for a match/no-match lnum is negative. But we |
|
d34ec6fe207d
patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18576
diff
changeset
|
1169 // can't go before line 1 |
|
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
1170 if (rex.reg_firstlnum + lnum < 1) |
| 7 | 1171 return NULL; |
|
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
1172 if (lnum > rex.reg_maxline) |
|
18812
d34ec6fe207d
patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18576
diff
changeset
|
1173 // Must have matched the "\n" in the last line. |
| 481 | 1174 return (char_u *)""; |
|
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
1175 return ml_get_buf(rex.reg_buf, rex.reg_firstlnum + lnum, FALSE); |
| 7 | 1176 } |
| 1177 | |
| 1178 #ifdef FEAT_SYN_HL | |
|
18812
d34ec6fe207d
patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18576
diff
changeset
|
1179 static char_u *reg_startzp[NSUBEXP]; // Workspace to mark beginning |
|
d34ec6fe207d
patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18576
diff
changeset
|
1180 static char_u *reg_endzp[NSUBEXP]; // and end of \z(...\) matches |
|
d34ec6fe207d
patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18576
diff
changeset
|
1181 static lpos_T reg_startzpos[NSUBEXP]; // idem, beginning pos |
|
d34ec6fe207d
patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18576
diff
changeset
|
1182 static lpos_T reg_endzpos[NSUBEXP]; // idem, end pos |
| 7 | 1183 #endif |
| 1184 | |
|
18812
d34ec6fe207d
patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18576
diff
changeset
|
1185 // TRUE if using multi-line regexp. |
|
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
1186 #define REG_MULTI (rex.reg_match == NULL) |
| 4444 | 1187 |
| 7 | 1188 #ifdef FEAT_SYN_HL |
| 1189 /* | |
| 1190 * Create a new extmatch and mark it as referenced once. | |
| 1191 */ | |
| 1192 static reg_extmatch_T * | |
|
7833
c079097365f3
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Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
1193 make_extmatch(void) |
| 7 | 1194 { |
| 1195 reg_extmatch_T *em; | |
| 1196 | |
|
16825
ce04ebdf26b8
patch 8.1.1414: alloc() returning "char_u *" causes a lot of type casts
Bram Moolenaar <Bram@vim.org>
parents:
16768
diff
changeset
|
1197 em = ALLOC_CLEAR_ONE(reg_extmatch_T); |
| 7 | 1198 if (em != NULL) |
| 1199 em->refcnt = 1; | |
| 1200 return em; | |
| 1201 } | |
| 1202 | |
| 1203 /* | |
| 1204 * Add a reference to an extmatch. | |
| 1205 */ | |
| 1206 reg_extmatch_T * | |
|
7833
c079097365f3
commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
1207 ref_extmatch(reg_extmatch_T *em) |
| 7 | 1208 { |
| 1209 if (em != NULL) | |
| 1210 em->refcnt++; | |
| 1211 return em; | |
| 1212 } | |
| 1213 | |
| 1214 /* | |
| 1215 * Remove a reference to an extmatch. If there are no references left, free | |
| 1216 * the info. | |
| 1217 */ | |
| 1218 void | |
|
7833
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Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
1219 unref_extmatch(reg_extmatch_T *em) |
| 7 | 1220 { |
| 1221 int i; | |
| 1222 | |
| 1223 if (em != NULL && --em->refcnt <= 0) | |
| 1224 { | |
| 1225 for (i = 0; i < NSUBEXP; ++i) | |
| 1226 vim_free(em->matches[i]); | |
| 1227 vim_free(em); | |
| 1228 } | |
| 1229 } | |
| 1230 #endif | |
| 1231 | |
| 1232 /* | |
| 1233 * Get class of previous character. | |
| 1234 */ | |
| 1235 static int | |
|
7833
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commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
1236 reg_prev_class(void) |
| 7 | 1237 { |
|
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
1238 if (rex.input > rex.line) |
|
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
1239 return mb_get_class_buf(rex.input - 1 |
|
15603
639b8318472c
patch 8.1.0809: too many #ifdefs
Bram Moolenaar <Bram@vim.org>
parents:
15555
diff
changeset
|
1240 - (*mb_head_off)(rex.line, rex.input - 1), rex.reg_buf); |
| 7 | 1241 return -1; |
| 1242 } | |
| 5735 | 1243 |
|
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updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
1244 /* |
|
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
1245 * Return TRUE if the current rex.input position matches the Visual area. |
|
4730
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updated for version 7.3.1112
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parents:
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diff
changeset
|
1246 */ |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
1247 static int |
|
7833
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commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
1248 reg_match_visual(void) |
|
4730
749e2b2755d5
updated for version 7.3.1112
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parents:
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diff
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|
1249 { |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
1250 pos_T top, bot; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1251 linenr_T lnum; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1252 colnr_T col; |
|
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
1253 win_T *wp = rex.reg_win == NULL ? curwin : rex.reg_win; |
|
4730
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updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
1254 int mode; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1255 colnr_T start, end; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1256 colnr_T start2, end2; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1257 colnr_T cols; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1258 |
|
18812
d34ec6fe207d
patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18576
diff
changeset
|
1259 // Check if the buffer is the current buffer. |
|
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
1260 if (rex.reg_buf != curbuf || VIsual.lnum == 0) |
|
4730
749e2b2755d5
updated for version 7.3.1112
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parents:
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diff
changeset
|
1261 return FALSE; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1262 |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1263 if (VIsual_active) |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1264 { |
|
11121
778c10516955
patch 8.0.0448: some macros are in lower case
Christian Brabandt <cb@256bit.org>
parents:
10359
diff
changeset
|
1265 if (LT_POS(VIsual, wp->w_cursor)) |
|
4730
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1266 { |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1267 top = VIsual; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1268 bot = wp->w_cursor; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1269 } |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1270 else |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1271 { |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1272 top = wp->w_cursor; |
|
749e2b2755d5
updated for version 7.3.1112
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parents:
4720
diff
changeset
|
1273 bot = VIsual; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1274 } |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1275 mode = VIsual_mode; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1276 } |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1277 else |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1278 { |
|
11121
778c10516955
patch 8.0.0448: some macros are in lower case
Christian Brabandt <cb@256bit.org>
parents:
10359
diff
changeset
|
1279 if (LT_POS(curbuf->b_visual.vi_start, curbuf->b_visual.vi_end)) |
|
4730
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1280 { |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1281 top = curbuf->b_visual.vi_start; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1282 bot = curbuf->b_visual.vi_end; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1283 } |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1284 else |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
1285 { |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1286 top = curbuf->b_visual.vi_end; |
|
749e2b2755d5
updated for version 7.3.1112
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parents:
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diff
changeset
|
1287 bot = curbuf->b_visual.vi_start; |
|
749e2b2755d5
updated for version 7.3.1112
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parents:
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diff
changeset
|
1288 } |
|
749e2b2755d5
updated for version 7.3.1112
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parents:
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diff
changeset
|
1289 mode = curbuf->b_visual.vi_mode; |
|
749e2b2755d5
updated for version 7.3.1112
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parents:
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diff
changeset
|
1290 } |
|
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
1291 lnum = rex.lnum + rex.reg_firstlnum; |
|
4730
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updated for version 7.3.1112
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diff
changeset
|
1292 if (lnum < top.lnum || lnum > bot.lnum) |
|
749e2b2755d5
updated for version 7.3.1112
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parents:
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diff
changeset
|
1293 return FALSE; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
1294 |
|
749e2b2755d5
updated for version 7.3.1112
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parents:
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diff
changeset
|
1295 if (mode == 'v') |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1296 { |
|
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
1297 col = (colnr_T)(rex.input - rex.line); |
|
4730
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updated for version 7.3.1112
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diff
changeset
|
1298 if ((lnum == top.lnum && col < top.col) |
|
749e2b2755d5
updated for version 7.3.1112
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diff
changeset
|
1299 || (lnum == bot.lnum && col >= bot.col + (*p_sel != 'e'))) |
|
749e2b2755d5
updated for version 7.3.1112
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diff
changeset
|
1300 return FALSE; |
|
749e2b2755d5
updated for version 7.3.1112
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parents:
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diff
changeset
|
1301 } |
|
749e2b2755d5
updated for version 7.3.1112
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parents:
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diff
changeset
|
1302 else if (mode == Ctrl_V) |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
1303 { |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
1304 getvvcol(wp, &top, &start, NULL, &end); |
|
749e2b2755d5
updated for version 7.3.1112
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parents:
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diff
changeset
|
1305 getvvcol(wp, &bot, &start2, NULL, &end2); |
|
749e2b2755d5
updated for version 7.3.1112
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parents:
4720
diff
changeset
|
1306 if (start2 < start) |
|
749e2b2755d5
updated for version 7.3.1112
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diff
changeset
|
1307 start = start2; |
|
749e2b2755d5
updated for version 7.3.1112
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parents:
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diff
changeset
|
1308 if (end2 > end) |
|
749e2b2755d5
updated for version 7.3.1112
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parents:
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diff
changeset
|
1309 end = end2; |
|
749e2b2755d5
updated for version 7.3.1112
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diff
changeset
|
1310 if (top.col == MAXCOL || bot.col == MAXCOL) |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
1311 end = MAXCOL; |
|
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
1312 cols = win_linetabsize(wp, rex.line, (colnr_T)(rex.input - rex.line)); |
|
4730
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updated for version 7.3.1112
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diff
changeset
|
1313 if (cols < start || cols > end - (*p_sel == 'e')) |
|
749e2b2755d5
updated for version 7.3.1112
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diff
changeset
|
1314 return FALSE; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
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diff
changeset
|
1315 } |
|
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|
1316 return TRUE; |
|
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|
1317 } |
|
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diff
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|
1318 |
| 7 | 1319 /* |
| 1320 * Check the regexp program for its magic number. | |
| 1321 * Return TRUE if it's wrong. | |
| 1322 */ | |
| 1323 static int | |
|
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|
1324 prog_magic_wrong(void) |
| 7 | 1325 { |
| 4444 | 1326 regprog_T *prog; |
| 1327 | |
|
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diff
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|
1328 prog = REG_MULTI ? rex.reg_mmatch->regprog : rex.reg_match->regprog; |
| 4444 | 1329 if (prog->engine == &nfa_regengine) |
|
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|
1330 // For NFA matcher we don't check the magic |
| 4444 | 1331 return FALSE; |
| 1332 | |
| 1333 if (UCHARAT(((bt_regprog_T *)prog)->program) != REGMAGIC) | |
| 7 | 1334 { |
|
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|
1335 emsg(_(e_re_corr)); |
| 7 | 1336 return TRUE; |
| 1337 } | |
| 1338 return FALSE; | |
| 1339 } | |
| 1340 | |
| 1341 /* | |
| 1342 * Cleanup the subexpressions, if this wasn't done yet. | |
| 1343 * This construction is used to clear the subexpressions only when they are | |
| 1344 * used (to increase speed). | |
| 1345 */ | |
| 1346 static void | |
|
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|
1347 cleanup_subexpr(void) |
| 7 | 1348 { |
|
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|
1349 if (rex.need_clear_subexpr) |
| 7 | 1350 { |
| 1351 if (REG_MULTI) | |
| 1352 { | |
|
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|
1353 // Use 0xff to set lnum to -1 |
|
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|
1354 vim_memset(rex.reg_startpos, 0xff, sizeof(lpos_T) * NSUBEXP); |
|
d76ccdacb41e
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1355 vim_memset(rex.reg_endpos, 0xff, sizeof(lpos_T) * NSUBEXP); |
| 7 | 1356 } |
| 1357 else | |
| 1358 { | |
|
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|
1359 vim_memset(rex.reg_startp, 0, sizeof(char_u *) * NSUBEXP); |
|
d76ccdacb41e
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|
1360 vim_memset(rex.reg_endp, 0, sizeof(char_u *) * NSUBEXP); |
| 7 | 1361 } |
|
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1362 rex.need_clear_subexpr = FALSE; |
| 7 | 1363 } |
| 1364 } | |
| 1365 | |
| 1366 #ifdef FEAT_SYN_HL | |
| 1367 static void | |
|
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|
1368 cleanup_zsubexpr(void) |
| 7 | 1369 { |
|
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1370 if (rex.need_clear_zsubexpr) |
| 7 | 1371 { |
| 1372 if (REG_MULTI) | |
| 1373 { | |
|
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1374 // Use 0xff to set lnum to -1 |
| 7 | 1375 vim_memset(reg_startzpos, 0xff, sizeof(lpos_T) * NSUBEXP); |
| 1376 vim_memset(reg_endzpos, 0xff, sizeof(lpos_T) * NSUBEXP); | |
| 1377 } | |
| 1378 else | |
| 1379 { | |
| 1380 vim_memset(reg_startzp, 0, sizeof(char_u *) * NSUBEXP); | |
| 1381 vim_memset(reg_endzp, 0, sizeof(char_u *) * NSUBEXP); | |
| 1382 } | |
|
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1383 rex.need_clear_zsubexpr = FALSE; |
| 7 | 1384 } |
| 1385 } | |
| 1386 #endif | |
| 1387 | |
| 1388 /* | |
|
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1389 * Advance rex.lnum, rex.line and rex.input to the next line. |
| 7 | 1390 */ |
| 1391 static void | |
|
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|
1392 reg_nextline(void) |
| 7 | 1393 { |
|
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1394 rex.line = reg_getline(++rex.lnum); |
|
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1395 rex.input = rex.line; |
| 7 | 1396 fast_breakcheck(); |
| 1397 } | |
| 1398 | |
| 1399 /* | |
|
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|
1400 * Check whether a backreference matches. |
|
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1401 * Returns RA_FAIL, RA_NOMATCH or RA_MATCH. |
| 5504 | 1402 * If "bytelen" is not NULL, it is set to the byte length of the match in the |
| 1403 * last line. | |
|
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1404 */ |
|
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1405 static int |
|
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|
1406 match_with_backref( |
|
c079097365f3
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|
1407 linenr_T start_lnum, |
|
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|
1408 colnr_T start_col, |
|
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|
1409 linenr_T end_lnum, |
|
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|
1410 colnr_T end_col, |
|
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|
1411 int *bytelen) |
|
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1412 { |
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1413 linenr_T clnum = start_lnum; |
|
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|
1414 colnr_T ccol = start_col; |
|
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|
1415 int len; |
|
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|
1416 char_u *p; |
|
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1417 |
|
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|
1418 if (bytelen != NULL) |
|
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|
1419 *bytelen = 0; |
|
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|
1420 for (;;) |
|
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|
1421 { |
|
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|
1422 // Since getting one line may invalidate the other, need to make copy. |
|
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|
1423 // Slow! |
|
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|
1424 if (rex.line != reg_tofree) |
|
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1425 { |
|
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|
1426 len = (int)STRLEN(rex.line); |
|
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|
1427 if (reg_tofree == NULL || len >= (int)reg_tofreelen) |
|
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|
1428 { |
|
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|
1429 len += 50; // get some extra |
|
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|
1430 vim_free(reg_tofree); |
|
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|
1431 reg_tofree = alloc(len); |
|
4c42efb4c098
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|
1432 if (reg_tofree == NULL) |
|
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|
1433 return RA_FAIL; // out of memory! |
|
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|
1434 reg_tofreelen = len; |
|
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|
1435 } |
|
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|
1436 STRCPY(reg_tofree, rex.line); |
|
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|
1437 rex.input = reg_tofree + (rex.input - rex.line); |
|
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|
1438 rex.line = reg_tofree; |
|
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|
1439 } |
|
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|
1440 |
|
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|
1441 // Get the line to compare with. |
|
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|
1442 p = reg_getline(clnum); |
|
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|
1443 if (clnum == end_lnum) |
|
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|
1444 len = end_col - ccol; |
|
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|
1445 else |
|
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|
1446 len = (int)STRLEN(p + ccol); |
|
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|
1447 |
|
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|
1448 if (cstrncmp(p + ccol, rex.input, &len) != 0) |
|
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|
1449 return RA_NOMATCH; // doesn't match |
|
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|
1450 if (bytelen != NULL) |
|
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|
1451 *bytelen += len; |
|
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|
1452 if (clnum == end_lnum) |
|
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|
1453 break; // match and at end! |
|
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|
1454 if (rex.lnum >= rex.reg_maxline) |
|
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|
1455 return RA_NOMATCH; // text too short |
|
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|
1456 |
|
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|
1457 // Advance to next line. |
|
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|
1458 reg_nextline(); |
| 5504 | 1459 if (bytelen != NULL) |
| 1460 *bytelen = 0; | |
|
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|
1461 ++clnum; |
|
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|
1462 ccol = 0; |
|
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|
1463 if (got_int) |
|
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|
1464 return RA_FAIL; |
|
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|
1465 } |
|
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|
1466 |
|
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|
1467 // found a match! Note that rex.line may now point to a copy of the line, |
|
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|
1468 // that should not matter. |
|
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|
1469 return RA_MATCH; |
|
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|
1470 } |
| 7 | 1471 |
| 6203 | 1472 /* |
| 1473 * Used in a place where no * or \+ can follow. | |
| 1474 */ | |
| 1475 static int | |
|
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|
1476 re_mult_next(char *what) |
| 6203 | 1477 { |
| 1478 if (re_multi_type(peekchr()) == MULTI_MULT) | |
|
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1479 { |
|
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|
1480 semsg(_("E888: (NFA regexp) cannot repeat %s"), what); |
|
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|
1481 rc_did_emsg = TRUE; |
|
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1482 return FAIL; |
|
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patch 8.1.0748: using sprintf() instead of semsg()
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changeset
|
1483 } |
| 6203 | 1484 return OK; |
| 1485 } | |
| 1486 | |
| 7 | 1487 typedef struct |
| 1488 { | |
| 1489 int a, b, c; | |
| 1490 } decomp_T; | |
| 1491 | |
| 1492 | |
|
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diff
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|
1493 // 0xfb20 - 0xfb4f |
| 297 | 1494 static decomp_T decomp_table[0xfb4f-0xfb20+1] = |
| 7 | 1495 { |
|
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|
1496 {0x5e2,0,0}, // 0xfb20 alt ayin |
|
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patch 8.1.2394: using old C style comments
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|
1497 {0x5d0,0,0}, // 0xfb21 alt alef |
|
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|
1498 {0x5d3,0,0}, // 0xfb22 alt dalet |
|
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|
1499 {0x5d4,0,0}, // 0xfb23 alt he |
|
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|
1500 {0x5db,0,0}, // 0xfb24 alt kaf |
|
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diff
changeset
|
1501 {0x5dc,0,0}, // 0xfb25 alt lamed |
|
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patch 8.1.2394: using old C style comments
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diff
changeset
|
1502 {0x5dd,0,0}, // 0xfb26 alt mem-sofit |
|
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patch 8.1.2394: using old C style comments
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parents:
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diff
changeset
|
1503 {0x5e8,0,0}, // 0xfb27 alt resh |
|
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patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1504 {0x5ea,0,0}, // 0xfb28 alt tav |
|
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patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
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diff
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|
1505 {'+', 0, 0}, // 0xfb29 alt plus |
|
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patch 8.1.2394: using old C style comments
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|
1506 {0x5e9, 0x5c1, 0}, // 0xfb2a shin+shin-dot |
|
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patch 8.1.2394: using old C style comments
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|
1507 {0x5e9, 0x5c2, 0}, // 0xfb2b shin+sin-dot |
|
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patch 8.1.2394: using old C style comments
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|
1508 {0x5e9, 0x5c1, 0x5bc}, // 0xfb2c shin+shin-dot+dagesh |
|
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patch 8.1.2394: using old C style comments
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changeset
|
1509 {0x5e9, 0x5c2, 0x5bc}, // 0xfb2d shin+sin-dot+dagesh |
|
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patch 8.1.2394: using old C style comments
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|
1510 {0x5d0, 0x5b7, 0}, // 0xfb2e alef+patah |
|
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|
1511 {0x5d0, 0x5b8, 0}, // 0xfb2f alef+qamats |
|
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patch 8.1.2394: using old C style comments
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|
1512 {0x5d0, 0x5b4, 0}, // 0xfb30 alef+hiriq |
|
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patch 8.1.2394: using old C style comments
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|
1513 {0x5d1, 0x5bc, 0}, // 0xfb31 bet+dagesh |
|
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|
1514 {0x5d2, 0x5bc, 0}, // 0xfb32 gimel+dagesh |
|
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|
1515 {0x5d3, 0x5bc, 0}, // 0xfb33 dalet+dagesh |
|
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patch 8.1.2394: using old C style comments
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|
1516 {0x5d4, 0x5bc, 0}, // 0xfb34 he+dagesh |
|
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patch 8.1.2394: using old C style comments
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changeset
|
1517 {0x5d5, 0x5bc, 0}, // 0xfb35 vav+dagesh |
|
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Bram Moolenaar <Bram@vim.org>
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changeset
|
1518 {0x5d6, 0x5bc, 0}, // 0xfb36 zayin+dagesh |
|
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patch 8.1.2394: using old C style comments
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changeset
|
1519 {0xfb37, 0, 0}, // 0xfb37 -- UNUSED |
|
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diff
changeset
|
1520 {0x5d8, 0x5bc, 0}, // 0xfb38 tet+dagesh |
|
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diff
changeset
|
1521 {0x5d9, 0x5bc, 0}, // 0xfb39 yud+dagesh |
|
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|
1522 {0x5da, 0x5bc, 0}, // 0xfb3a kaf sofit+dagesh |
|
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|
1523 {0x5db, 0x5bc, 0}, // 0xfb3b kaf+dagesh |
|
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|
1524 {0x5dc, 0x5bc, 0}, // 0xfb3c lamed+dagesh |
|
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patch 8.1.2394: using old C style comments
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changeset
|
1525 {0xfb3d, 0, 0}, // 0xfb3d -- UNUSED |
|
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patch 8.1.2394: using old C style comments
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|
1526 {0x5de, 0x5bc, 0}, // 0xfb3e mem+dagesh |
|
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patch 8.1.2394: using old C style comments
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|
1527 {0xfb3f, 0, 0}, // 0xfb3f -- UNUSED |
|
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patch 8.1.2394: using old C style comments
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changeset
|
1528 {0x5e0, 0x5bc, 0}, // 0xfb40 nun+dagesh |
|
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patch 8.1.2394: using old C style comments
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changeset
|
1529 {0x5e1, 0x5bc, 0}, // 0xfb41 samech+dagesh |
|
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patch 8.1.2394: using old C style comments
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changeset
|
1530 {0xfb42, 0, 0}, // 0xfb42 -- UNUSED |
|
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Bram Moolenaar <Bram@vim.org>
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changeset
|
1531 {0x5e3, 0x5bc, 0}, // 0xfb43 pe sofit+dagesh |
|
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|
1532 {0x5e4, 0x5bc,0}, // 0xfb44 pe+dagesh |
|
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changeset
|
1533 {0xfb45, 0, 0}, // 0xfb45 -- UNUSED |
|
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|
1534 {0x5e6, 0x5bc, 0}, // 0xfb46 tsadi+dagesh |
|
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changeset
|
1535 {0x5e7, 0x5bc, 0}, // 0xfb47 qof+dagesh |
|
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changeset
|
1536 {0x5e8, 0x5bc, 0}, // 0xfb48 resh+dagesh |
|
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patch 8.1.2394: using old C style comments
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parents:
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diff
changeset
|
1537 {0x5e9, 0x5bc, 0}, // 0xfb49 shin+dagesh |
|
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patch 8.1.2394: using old C style comments
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|
1538 {0x5ea, 0x5bc, 0}, // 0xfb4a tav+dagesh |
|
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patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1539 {0x5d5, 0x5b9, 0}, // 0xfb4b vav+holam |
|
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patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
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changeset
|
1540 {0x5d1, 0x5bf, 0}, // 0xfb4c bet+rafe |
|
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parents:
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changeset
|
1541 {0x5db, 0x5bf, 0}, // 0xfb4d kaf+rafe |
|
d34ec6fe207d
patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1542 {0x5e4, 0x5bf, 0}, // 0xfb4e pe+rafe |
|
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patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1543 {0x5d0, 0x5dc, 0} // 0xfb4f alef-lamed |
| 7 | 1544 }; |
| 1545 | |
| 1546 static void | |
|
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Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1547 mb_decompose(int c, int *c1, int *c2, int *c3) |
| 7 | 1548 { |
| 1549 decomp_T d; | |
| 1550 | |
|
4505
d037b9cbdaaa
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Bram Moolenaar <bram@vim.org>
parents:
4466
diff
changeset
|
1551 if (c >= 0xfb20 && c <= 0xfb4f) |
| 7 | 1552 { |
| 1553 d = decomp_table[c - 0xfb20]; | |
| 1554 *c1 = d.a; | |
| 1555 *c2 = d.b; | |
| 1556 *c3 = d.c; | |
| 1557 } | |
| 1558 else | |
| 1559 { | |
| 1560 *c1 = c; | |
| 1561 *c2 = *c3 = 0; | |
| 1562 } | |
| 1563 } | |
| 1564 | |
| 1565 /* | |
|
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Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
1566 * Compare two strings, ignore case if rex.reg_ic set. |
| 7 | 1567 * Return 0 if strings match, non-zero otherwise. |
| 1568 * Correct the length "*n" when composing characters are ignored. | |
| 1569 */ | |
| 1570 static int | |
|
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commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
1571 cstrncmp(char_u *s1, char_u *s2, int *n) |
| 7 | 1572 { |
| 1573 int result; | |
| 1574 | |
|
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commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1575 if (!rex.reg_ic) |
| 7 | 1576 result = STRNCMP(s1, s2, *n); |
| 1577 else | |
| 1578 result = MB_STRNICMP(s1, s2, *n); | |
| 1579 | |
|
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diff
changeset
|
1580 // if it failed and it's utf8 and we want to combineignore: |
|
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
1581 if (result != 0 && enc_utf8 && rex.reg_icombine) |
| 7 | 1582 { |
| 1583 char_u *str1, *str2; | |
| 1584 int c1, c2, c11, c12; | |
| 1585 int junk; | |
| 1586 | |
|
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diff
changeset
|
1587 // we have to handle the strcmp ourselves, since it is necessary to |
|
d34ec6fe207d
patch 8.1.2394: using old C style comments
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parents:
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diff
changeset
|
1588 // deal with the composing characters by ignoring them: |
| 7 | 1589 str1 = s1; |
| 1590 str2 = s2; | |
| 1591 c1 = c2 = 0; | |
| 507 | 1592 while ((int)(str1 - s1) < *n) |
| 7 | 1593 { |
| 1594 c1 = mb_ptr2char_adv(&str1); | |
| 1595 c2 = mb_ptr2char_adv(&str2); | |
| 1596 | |
|
18019
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patch 8.1.2005: the regexp.c file is too big
Bram Moolenaar <Bram@vim.org>
parents:
17966
diff
changeset
|
1597 // Decompose the character if necessary, into 'base' characters. |
|
68fd5296bf73
patch 8.1.2005: the regexp.c file is too big
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diff
changeset
|
1598 // Currently hard-coded for Hebrew, Arabic to be done... |
|
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d76ccdacb41e
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Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
1599 if (c1 != c2 && (!rex.reg_ic || utf_fold(c1) != utf_fold(c2))) |
| 7 | 1600 { |
|
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patch 8.1.2005: the regexp.c file is too big
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parents:
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changeset
|
1601 // decomposition necessary? |
| 7 | 1602 mb_decompose(c1, &c11, &junk, &junk); |
| 1603 mb_decompose(c2, &c12, &junk, &junk); | |
| 1604 c1 = c11; | |
| 1605 c2 = c12; | |
|
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diff
changeset
|
1606 if (c11 != c12 |
|
d76ccdacb41e
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changeset
|
1607 && (!rex.reg_ic || utf_fold(c11) != utf_fold(c12))) |
| 7 | 1608 break; |
| 1609 } | |
| 1610 } | |
| 1611 result = c2 - c1; | |
| 1612 if (result == 0) | |
| 1613 *n = (int)(str2 - s2); | |
| 1614 } | |
| 1615 | |
| 1616 return result; | |
| 1617 } | |
| 1618 | |
| 1619 /* | |
| 1620 * cstrchr: This function is used a lot for simple searches, keep it fast! | |
| 1621 */ | |
| 1622 static char_u * | |
|
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Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
1623 cstrchr(char_u *s, int c) |
| 7 | 1624 { |
| 1625 char_u *p; | |
| 1626 int cc; | |
| 1627 | |
|
15603
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patch 8.1.0809: too many #ifdefs
Bram Moolenaar <Bram@vim.org>
parents:
15555
diff
changeset
|
1628 if (!rex.reg_ic || (!enc_utf8 && mb_char2len(c) > 1)) |
| 7 | 1629 return vim_strchr(s, c); |
| 1630 | |
|
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diff
changeset
|
1631 // tolower() and toupper() can be slow, comparing twice should be a lot |
|
d34ec6fe207d
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diff
changeset
|
1632 // faster (esp. when using MS Visual C++!). |
|
d34ec6fe207d
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changeset
|
1633 // For UTF-8 need to use folded case. |
| 7 | 1634 if (enc_utf8 && c > 0x80) |
| 1635 cc = utf_fold(c); | |
| 1636 else | |
| 1347 | 1637 if (MB_ISUPPER(c)) |
| 1638 cc = MB_TOLOWER(c); | |
| 1639 else if (MB_ISLOWER(c)) | |
| 1640 cc = MB_TOUPPER(c); | |
| 7 | 1641 else |
| 1642 return vim_strchr(s, c); | |
| 1643 | |
| 1644 if (has_mbyte) | |
| 1645 { | |
| 474 | 1646 for (p = s; *p != NUL; p += (*mb_ptr2len)(p)) |
| 7 | 1647 { |
| 1648 if (enc_utf8 && c > 0x80) | |
| 1649 { | |
| 1650 if (utf_fold(utf_ptr2char(p)) == cc) | |
| 1651 return p; | |
| 1652 } | |
| 1653 else if (*p == c || *p == cc) | |
| 1654 return p; | |
| 1655 } | |
| 1656 } | |
| 1657 else | |
|
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parents:
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changeset
|
1658 // Faster version for when there are no multi-byte characters. |
| 7 | 1659 for (p = s; *p != NUL; ++p) |
| 1660 if (*p == c || *p == cc) | |
| 1661 return p; | |
| 1662 | |
| 1663 return NULL; | |
| 1664 } | |
| 1665 | |
|
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1666 //////////////////////////////////////////////////////////////// |
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1667 // regsub stuff // |
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1668 //////////////////////////////////////////////////////////////// |
| 7 | 1669 |
| 1670 /* | |
| 1671 * We should define ftpr as a pointer to a function returning a pointer to | |
| 1672 * a function returning a pointer to a function ... | |
| 1673 * This is impossible, so we declare a pointer to a function returning a | |
| 1674 * pointer to a function returning void. This should work for all compilers. | |
| 1675 */ | |
|
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1676 typedef void (*(*fptr_T)(int *, int))(); |
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1677 |
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1678 static int vim_regsub_both(char_u *source, typval_T *expr, char_u *dest, int copy, int magic, int backslash); |
| 7 | 1679 |
| 772 | 1680 static fptr_T |
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|
1681 do_upper(int *d, int c) |
| 7 | 1682 { |
| 772 | 1683 *d = MB_TOUPPER(c); |
| 1684 | |
| 1685 return (fptr_T)NULL; | |
| 7 | 1686 } |
| 1687 | |
| 772 | 1688 static fptr_T |
|
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|
1689 do_Upper(int *d, int c) |
| 7 | 1690 { |
| 772 | 1691 *d = MB_TOUPPER(c); |
| 1692 | |
| 1693 return (fptr_T)do_Upper; | |
| 1694 } | |
| 1695 | |
| 1696 static fptr_T | |
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1697 do_lower(int *d, int c) |
| 772 | 1698 { |
| 1699 *d = MB_TOLOWER(c); | |
| 1700 | |
| 1701 return (fptr_T)NULL; | |
| 1702 } | |
| 1703 | |
| 1704 static fptr_T | |
|
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1705 do_Lower(int *d, int c) |
| 772 | 1706 { |
| 1707 *d = MB_TOLOWER(c); | |
| 1708 | |
| 1709 return (fptr_T)do_Lower; | |
| 7 | 1710 } |
| 1711 | |
| 1712 /* | |
| 1713 * regtilde(): Replace tildes in the pattern by the old pattern. | |
| 1714 * | |
| 1715 * Short explanation of the tilde: It stands for the previous replacement | |
| 1716 * pattern. If that previous pattern also contains a ~ we should go back a | |
| 1717 * step further... But we insert the previous pattern into the current one | |
| 1718 * and remember that. | |
| 772 | 1719 * This still does not handle the case where "magic" changes. So require the |
| 1720 * user to keep his hands off of "magic". | |
| 7 | 1721 * |
| 1722 * The tildes are parsed once before the first call to vim_regsub(). | |
| 1723 */ | |
| 1724 char_u * | |
|
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1725 regtilde(char_u *source, int magic) |
| 7 | 1726 { |
| 1727 char_u *newsub = source; | |
| 1728 char_u *tmpsub; | |
| 1729 char_u *p; | |
| 1730 int len; | |
| 1731 int prevlen; | |
| 1732 | |
| 1733 for (p = newsub; *p; ++p) | |
| 1734 { | |
| 1735 if ((*p == '~' && magic) || (*p == '\\' && *(p + 1) == '~' && !magic)) | |
| 1736 { | |
| 1737 if (reg_prev_sub != NULL) | |
| 1738 { | |
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1739 // length = len(newsub) - 1 + len(prev_sub) + 1 |
| 7 | 1740 prevlen = (int)STRLEN(reg_prev_sub); |
|
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1741 tmpsub = alloc(STRLEN(newsub) + prevlen); |
| 7 | 1742 if (tmpsub != NULL) |
| 1743 { | |
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1744 // copy prefix |
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1745 len = (int)(p - newsub); // not including ~ |
| 7 | 1746 mch_memmove(tmpsub, newsub, (size_t)len); |
|
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1747 // interpret tilde |
| 7 | 1748 mch_memmove(tmpsub + len, reg_prev_sub, (size_t)prevlen); |
|
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1749 // copy postfix |
| 7 | 1750 if (!magic) |
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1751 ++p; // back off backslash |
| 7 | 1752 STRCPY(tmpsub + len + prevlen, p + 1); |
| 1753 | |
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1754 if (newsub != source) // already allocated newsub |
| 7 | 1755 vim_free(newsub); |
| 1756 newsub = tmpsub; | |
| 1757 p = newsub + len + prevlen; | |
| 1758 } | |
| 1759 } | |
| 1760 else if (magic) | |
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1761 STRMOVE(p, p + 1); // remove '~' |
| 7 | 1762 else |
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1763 STRMOVE(p, p + 2); // remove '\~' |
| 7 | 1764 --p; |
| 1765 } | |
| 1766 else | |
| 1767 { | |
|
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1768 if (*p == '\\' && p[1]) // skip escaped characters |
| 7 | 1769 ++p; |
| 1770 if (has_mbyte) | |
| 474 | 1771 p += (*mb_ptr2len)(p) - 1; |
| 7 | 1772 } |
| 1773 } | |
| 1774 | |
| 1775 vim_free(reg_prev_sub); | |
|
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1776 if (newsub != source) // newsub was allocated, just keep it |
| 7 | 1777 reg_prev_sub = newsub; |
|
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1778 else // no ~ found, need to save newsub |
| 7 | 1779 reg_prev_sub = vim_strsave(newsub); |
| 1780 return newsub; | |
| 1781 } | |
| 1782 | |
| 1783 #ifdef FEAT_EVAL | |
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1784 static int can_f_submatch = FALSE; // TRUE when submatch() can be used |
| 7 | 1785 |
|
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1786 // These pointers are used for reg_submatch(). Needed for when the |
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1787 // substitution string is an expression that contains a call to substitute() |
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1788 // and submatch(). |
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1789 typedef struct { |
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1790 regmatch_T *sm_match; |
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1791 regmmatch_T *sm_mmatch; |
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1792 linenr_T sm_firstlnum; |
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1793 linenr_T sm_maxline; |
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1794 int sm_line_lbr; |
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1795 } regsubmatch_T; |
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1796 |
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1797 static regsubmatch_T rsm; // can only be used when can_f_submatch is TRUE |
| 7 | 1798 #endif |
| 1799 | |
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1800 #ifdef FEAT_EVAL |
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1801 |
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1802 /* |
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1803 * Put the submatches in "argv[argskip]" which is a list passed into |
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1804 * call_func() by vim_regsub_both(). |
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1805 */ |
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1806 static int |
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1807 fill_submatch_list(int argc UNUSED, typval_T *argv, int argskip, int argcount) |
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1808 { |
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1809 listitem_T *li; |
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1810 int i; |
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1811 char_u *s; |
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1812 typval_T *listarg = argv + argskip; |
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1813 |
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1814 if (argcount == argskip) |
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1815 // called function doesn't take a submatches argument |
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1816 return argskip; |
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1817 |
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1818 // Relies on sl_list to be the first item in staticList10_T. |
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1819 init_static_list((staticList10_T *)(listarg->vval.v_list)); |
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1820 |
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1821 // There are always 10 list items in staticList10_T. |
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1822 li = listarg->vval.v_list->lv_first; |
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1823 for (i = 0; i < 10; ++i) |
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1824 { |
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1825 s = rsm.sm_match->startp[i]; |
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1826 if (s == NULL || rsm.sm_match->endp[i] == NULL) |
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1827 s = NULL; |
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1828 else |
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1829 s = vim_strnsave(s, (int)(rsm.sm_match->endp[i] - s)); |
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1830 li->li_tv.v_type = VAR_STRING; |
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1831 li->li_tv.vval.v_string = s; |
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1832 li = li->li_next; |
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1833 } |
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1834 return argskip + 1; |
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1835 } |
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1836 |
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1837 static void |
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1838 clear_submatch_list(staticList10_T *sl) |
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1839 { |
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1840 int i; |
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1841 |
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1842 for (i = 0; i < 10; ++i) |
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1843 vim_free(sl->sl_items[i].li_tv.vval.v_string); |
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1844 } |
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1845 #endif |
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1846 |
| 7 | 1847 /* |
| 1848 * vim_regsub() - perform substitutions after a vim_regexec() or | |
| 1849 * vim_regexec_multi() match. | |
| 1850 * | |
| 1851 * If "copy" is TRUE really copy into "dest". | |
| 1852 * If "copy" is FALSE nothing is copied, this is just to find out the length | |
| 1853 * of the result. | |
| 1854 * | |
| 1855 * If "backslash" is TRUE, a backslash will be removed later, need to double | |
| 1856 * them to keep them, and insert a backslash before a CR to avoid it being | |
| 1857 * replaced with a line break later. | |
| 1858 * | |
| 1859 * Note: The matched text must not change between the call of | |
| 1860 * vim_regexec()/vim_regexec_multi() and vim_regsub()! It would make the back | |
| 1861 * references invalid! | |
| 1862 * | |
| 1863 * Returns the size of the replacement, including terminating NUL. | |
| 1864 */ | |
| 1865 int | |
|
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1866 vim_regsub( |
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1867 regmatch_T *rmp, |
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1868 char_u *source, |
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1869 typval_T *expr, |
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1870 char_u *dest, |
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1871 int copy, |
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1872 int magic, |
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1873 int backslash) |
| 7 | 1874 { |
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1875 int result; |
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1876 regexec_T rex_save; |
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1877 int rex_in_use_save = rex_in_use; |
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1878 |
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1879 if (rex_in_use) |
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1880 // Being called recursively, save the state. |
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1881 rex_save = rex; |
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1882 rex_in_use = TRUE; |
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1883 |
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1884 rex.reg_match = rmp; |
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1885 rex.reg_mmatch = NULL; |
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1886 rex.reg_maxline = 0; |
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1887 rex.reg_buf = curbuf; |
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1888 rex.reg_line_lbr = TRUE; |
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1889 result = vim_regsub_both(source, expr, dest, copy, magic, backslash); |
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1890 |
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1891 rex_in_use = rex_in_use_save; |
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1892 if (rex_in_use) |
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1893 rex = rex_save; |
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1894 |
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1895 return result; |
| 7 | 1896 } |
| 1897 | |
| 1898 int | |
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1899 vim_regsub_multi( |
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1900 regmmatch_T *rmp, |
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1901 linenr_T lnum, |
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1902 char_u *source, |
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1903 char_u *dest, |
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1904 int copy, |
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1905 int magic, |
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1906 int backslash) |
| 7 | 1907 { |
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1908 int result; |
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1909 regexec_T rex_save; |
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1910 int rex_in_use_save = rex_in_use; |
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1911 |
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1912 if (rex_in_use) |
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1913 // Being called recursively, save the state. |
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1914 rex_save = rex; |
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1915 rex_in_use = TRUE; |
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1916 |
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1917 rex.reg_match = NULL; |
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1918 rex.reg_mmatch = rmp; |
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1919 rex.reg_buf = curbuf; // always works on the current buffer! |
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1920 rex.reg_firstlnum = lnum; |
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1921 rex.reg_maxline = curbuf->b_ml.ml_line_count - lnum; |
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1922 rex.reg_line_lbr = FALSE; |
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1923 result = vim_regsub_both(source, NULL, dest, copy, magic, backslash); |
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1924 |
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1925 rex_in_use = rex_in_use_save; |
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1926 if (rex_in_use) |
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1927 rex = rex_save; |
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1928 |
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1929 return result; |
| 7 | 1930 } |
| 1931 | |
| 1932 static int | |
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1933 vim_regsub_both( |
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1934 char_u *source, |
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1935 typval_T *expr, |
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1936 char_u *dest, |
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1937 int copy, |
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1938 int magic, |
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1939 int backslash) |
| 7 | 1940 { |
| 1941 char_u *src; | |
| 1942 char_u *dst; | |
| 1943 char_u *s; | |
| 1944 int c; | |
| 772 | 1945 int cc; |
| 7 | 1946 int no = -1; |
| 4244 | 1947 fptr_T func_all = (fptr_T)NULL; |
| 1948 fptr_T func_one = (fptr_T)NULL; | |
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1949 linenr_T clnum = 0; // init for GCC |
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1950 int len = 0; // init for GCC |
| 7 | 1951 #ifdef FEAT_EVAL |
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1952 static char_u *eval_result = NULL; |
| 7 | 1953 #endif |
| 1954 | |
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1955 // Be paranoid... |
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1956 if ((source == NULL && expr == NULL) || dest == NULL) |
| 7 | 1957 { |
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1958 emsg(_(e_null)); |
| 7 | 1959 return 0; |
| 1960 } | |
| 1961 if (prog_magic_wrong()) | |
| 1962 return 0; | |
| 1963 src = source; | |
| 1964 dst = dest; | |
| 1965 | |
| 1966 /* | |
| 1967 * When the substitute part starts with "\=" evaluate it as an expression. | |
| 1968 */ | |
|
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1969 if (expr != NULL || (source[0] == '\\' && source[1] == '=')) |
| 7 | 1970 { |
| 1971 #ifdef FEAT_EVAL | |
|
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1972 // To make sure that the length doesn't change between checking the |
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1973 // length and copying the string, and to speed up things, the |
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1974 // resulting string is saved from the call with "copy" == FALSE to the |
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1975 // call with "copy" == TRUE. |
| 7 | 1976 if (copy) |
| 1977 { | |
| 1978 if (eval_result != NULL) | |
| 1979 { | |
| 1980 STRCPY(dest, eval_result); | |
| 1981 dst += STRLEN(eval_result); | |
|
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1982 VIM_CLEAR(eval_result); |
| 7 | 1983 } |
| 1984 } | |
| 1985 else | |
| 1986 { | |
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1987 int prev_can_f_submatch = can_f_submatch; |
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1988 regsubmatch_T rsm_save; |
| 7 | 1989 |
| 1990 vim_free(eval_result); | |
| 1991 | |
|
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1992 // The expression may contain substitute(), which calls us |
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1993 // recursively. Make sure submatch() gets the text from the first |
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1994 // level. |
|
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1995 if (can_f_submatch) |
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1996 rsm_save = rsm; |
| 7 | 1997 can_f_submatch = TRUE; |
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1998 rsm.sm_match = rex.reg_match; |
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1999 rsm.sm_mmatch = rex.reg_mmatch; |
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2000 rsm.sm_firstlnum = rex.reg_firstlnum; |
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2001 rsm.sm_maxline = rex.reg_maxline; |
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2002 rsm.sm_line_lbr = rex.reg_line_lbr; |
| 7 | 2003 |
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2004 if (expr != NULL) |
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2005 { |
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2006 typval_T argv[2]; |
|
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2007 char_u buf[NUMBUFLEN]; |
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2008 typval_T rettv; |
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2009 staticList10_T matchList; |
|
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2010 funcexe_T funcexe; |
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2011 |
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2012 rettv.v_type = VAR_STRING; |
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2013 rettv.vval.v_string = NULL; |
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2014 argv[0].v_type = VAR_LIST; |
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2015 argv[0].vval.v_list = &matchList.sl_list; |
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2016 matchList.sl_list.lv_len = 0; |
|
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2017 CLEAR_FIELD(funcexe); |
|
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2018 funcexe.argv_func = fill_submatch_list; |
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2019 funcexe.evaluate = TRUE; |
|
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2020 if (expr->v_type == VAR_FUNC) |
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2021 { |
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2022 s = expr->vval.v_string; |
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2023 call_func(s, -1, &rettv, 1, argv, &funcexe); |
|
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2024 } |
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2025 else if (expr->v_type == VAR_PARTIAL) |
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2026 { |
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2027 partial_T *partial = expr->vval.v_partial; |
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2028 |
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2029 s = partial_name(partial); |
|
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2030 funcexe.partial = partial; |
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2031 call_func(s, -1, &rettv, 1, argv, &funcexe); |
|
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2032 } |
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2033 if (matchList.sl_list.lv_len > 0) |
|
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2034 // fill_submatch_list() was called |
|
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2035 clear_submatch_list(&matchList); |
|
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2036 |
|
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2037 if (rettv.v_type == VAR_UNKNOWN) |
|
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|
2038 // something failed, no need to report another error |
|
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2039 eval_result = NULL; |
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2040 else |
|
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2041 { |
|
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|
2042 eval_result = tv_get_string_buf_chk(&rettv, buf); |
|
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|
2043 if (eval_result != NULL) |
|
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|
2044 eval_result = vim_strsave(eval_result); |
|
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2045 } |
|
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|
2046 clear_tv(&rettv); |
|
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2047 } |
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|
2048 else |
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|
2049 eval_result = eval_to_string(source + 2, NULL, TRUE); |
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2050 |
| 7 | 2051 if (eval_result != NULL) |
| 2052 { | |
|
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|
2053 int had_backslash = FALSE; |
|
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2054 |
|
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|
2055 for (s = eval_result; *s != NUL; MB_PTR_ADV(s)) |
| 7 | 2056 { |
|
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|
2057 // Change NL to CR, so that it becomes a line break, |
|
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|
2058 // unless called from vim_regexec_nl(). |
|
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|
2059 // Skip over a backslashed character. |
|
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changeset
|
2060 if (*s == NL && !rsm.sm_line_lbr) |
| 7 | 2061 *s = CAR; |
| 2062 else if (*s == '\\' && s[1] != NUL) | |
|
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|
2063 { |
| 7 | 2064 ++s; |
| 2173 | 2065 /* Change NL to CR here too, so that this works: |
| 2066 * :s/abc\\\ndef/\="aaa\\\nbbb"/ on text: | |
| 2067 * abc\ | |
| 2068 * def | |
| 2904 | 2069 * Not when called from vim_regexec_nl(). |
| 2173 | 2070 */ |
|
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|
2071 if (*s == NL && !rsm.sm_line_lbr) |
| 2173 | 2072 *s = CAR; |
|
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|
2073 had_backslash = TRUE; |
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|
2074 } |
|
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2075 } |
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|
2076 if (had_backslash && backslash) |
|
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|
2077 { |
|
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2078 // Backslashes will be consumed, need to double them. |
|
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|
2079 s = vim_strsave_escaped(eval_result, (char_u *)"\\"); |
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2080 if (s != NULL) |
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|
2081 { |
|
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|
2082 vim_free(eval_result); |
|
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|
2083 eval_result = s; |
|
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|
2084 } |
| 7 | 2085 } |
| 2086 | |
| 2087 dst += STRLEN(eval_result); | |
| 2088 } | |
| 2089 | |
|
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|
2090 can_f_submatch = prev_can_f_submatch; |
|
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|
2091 if (can_f_submatch) |
|
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parents:
10187
diff
changeset
|
2092 rsm = rsm_save; |
| 7 | 2093 } |
| 2094 #endif | |
| 2095 } | |
| 2096 else | |
| 2097 while ((c = *src++) != NUL) | |
| 2098 { | |
| 2099 if (c == '&' && magic) | |
| 2100 no = 0; | |
| 2101 else if (c == '\\' && *src != NUL) | |
| 2102 { | |
| 2103 if (*src == '&' && !magic) | |
| 2104 { | |
| 2105 ++src; | |
| 2106 no = 0; | |
| 2107 } | |
| 2108 else if ('0' <= *src && *src <= '9') | |
| 2109 { | |
| 2110 no = *src++ - '0'; | |
| 2111 } | |
| 2112 else if (vim_strchr((char_u *)"uUlLeE", *src)) | |
| 2113 { | |
| 2114 switch (*src++) | |
| 2115 { | |
| 4244 | 2116 case 'u': func_one = (fptr_T)do_upper; |
| 7 | 2117 continue; |
| 4244 | 2118 case 'U': func_all = (fptr_T)do_Upper; |
| 7 | 2119 continue; |
| 4244 | 2120 case 'l': func_one = (fptr_T)do_lower; |
| 7 | 2121 continue; |
| 4244 | 2122 case 'L': func_all = (fptr_T)do_Lower; |
| 7 | 2123 continue; |
| 2124 case 'e': | |
| 4244 | 2125 case 'E': func_one = func_all = (fptr_T)NULL; |
| 7 | 2126 continue; |
| 2127 } | |
| 2128 } | |
| 2129 } | |
|
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|
2130 if (no < 0) // Ordinary character. |
| 7 | 2131 { |
| 798 | 2132 if (c == K_SPECIAL && src[0] != NUL && src[1] != NUL) |
| 2133 { | |
|
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|
2134 // Copy a special key as-is. |
| 798 | 2135 if (copy) |
| 2136 { | |
| 2137 *dst++ = c; | |
| 2138 *dst++ = *src++; | |
| 2139 *dst++ = *src++; | |
| 2140 } | |
| 2141 else | |
| 2142 { | |
| 2143 dst += 3; | |
| 2144 src += 2; | |
| 2145 } | |
| 2146 continue; | |
| 2147 } | |
| 2148 | |
| 7 | 2149 if (c == '\\' && *src != NUL) |
| 2150 { | |
|
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|
2151 // Check for abbreviations -- webb |
| 7 | 2152 switch (*src) |
| 2153 { | |
| 2154 case 'r': c = CAR; ++src; break; | |
| 2155 case 'n': c = NL; ++src; break; | |
| 2156 case 't': c = TAB; ++src; break; | |
|
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2157 // Oh no! \e already has meaning in subst pat :-( |
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2158 // case 'e': c = ESC; ++src; break; |
| 7 | 2159 case 'b': c = Ctrl_H; ++src; break; |
| 2160 | |
|
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2161 // If "backslash" is TRUE the backslash will be removed |
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2162 // later. Used to insert a literal CR. |
| 7 | 2163 default: if (backslash) |
| 2164 { | |
| 2165 if (copy) | |
| 2166 *dst = '\\'; | |
| 2167 ++dst; | |
| 2168 } | |
| 2169 c = *src++; | |
| 2170 } | |
| 2171 } | |
| 798 | 2172 else if (has_mbyte) |
| 2173 c = mb_ptr2char(src - 1); | |
| 7 | 2174 |
|
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2175 // Write to buffer, if copy is set. |
| 4244 | 2176 if (func_one != (fptr_T)NULL) |
|
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|
2177 // Turbo C complains without the typecast |
| 4244 | 2178 func_one = (fptr_T)(func_one(&cc, c)); |
| 2179 else if (func_all != (fptr_T)NULL) | |
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2180 // Turbo C complains without the typecast |
| 4244 | 2181 func_all = (fptr_T)(func_all(&cc, c)); |
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2182 else // just copy |
| 772 | 2183 cc = c; |
| 2184 | |
| 2185 if (has_mbyte) | |
| 7 | 2186 { |
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2187 int totlen = mb_ptr2len(src - 1); |
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2188 |
| 7 | 2189 if (copy) |
| 772 | 2190 mb_char2bytes(cc, dst); |
| 2191 dst += mb_char2len(cc) - 1; | |
|
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2192 if (enc_utf8) |
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2193 { |
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2194 int clen = utf_ptr2len(src - 1); |
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2195 |
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2196 // If the character length is shorter than "totlen", there |
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2197 // are composing characters; copy them as-is. |
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2198 if (clen < totlen) |
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2199 { |
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2200 if (copy) |
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2201 mch_memmove(dst + 1, src - 1 + clen, |
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2202 (size_t)(totlen - clen)); |
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2203 dst += totlen - clen; |
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2204 } |
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2205 } |
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2206 src += totlen - 1; |
| 7 | 2207 } |
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2208 else if (copy) |
| 772 | 2209 *dst = cc; |
| 7 | 2210 dst++; |
| 2211 } | |
| 2212 else | |
| 2213 { | |
| 2214 if (REG_MULTI) | |
| 2215 { | |
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|
2216 clnum = rex.reg_mmatch->startpos[no].lnum; |
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2217 if (clnum < 0 || rex.reg_mmatch->endpos[no].lnum < 0) |
| 7 | 2218 s = NULL; |
| 2219 else | |
| 2220 { | |
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2221 s = reg_getline(clnum) + rex.reg_mmatch->startpos[no].col; |
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2222 if (rex.reg_mmatch->endpos[no].lnum == clnum) |
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|
2223 len = rex.reg_mmatch->endpos[no].col |
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diff
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|
2224 - rex.reg_mmatch->startpos[no].col; |
| 7 | 2225 else |
| 2226 len = (int)STRLEN(s); | |
| 2227 } | |
| 2228 } | |
| 2229 else | |
| 2230 { | |
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|
2231 s = rex.reg_match->startp[no]; |
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|
2232 if (rex.reg_match->endp[no] == NULL) |
| 7 | 2233 s = NULL; |
| 2234 else | |
|
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diff
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|
2235 len = (int)(rex.reg_match->endp[no] - s); |
| 7 | 2236 } |
| 2237 if (s != NULL) | |
| 2238 { | |
| 2239 for (;;) | |
| 2240 { | |
| 2241 if (len == 0) | |
| 2242 { | |
| 2243 if (REG_MULTI) | |
| 2244 { | |
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diff
changeset
|
2245 if (rex.reg_mmatch->endpos[no].lnum == clnum) |
| 7 | 2246 break; |
| 2247 if (copy) | |
| 2248 *dst = CAR; | |
| 2249 ++dst; | |
| 2250 s = reg_getline(++clnum); | |
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diff
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|
2251 if (rex.reg_mmatch->endpos[no].lnum == clnum) |
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d76ccdacb41e
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diff
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|
2252 len = rex.reg_mmatch->endpos[no].col; |
| 7 | 2253 else |
| 2254 len = (int)STRLEN(s); | |
| 2255 } | |
| 2256 else | |
| 2257 break; | |
| 2258 } | |
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|
2259 else if (*s == NUL) // we hit NUL. |
| 7 | 2260 { |
| 2261 if (copy) | |
|
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|
2262 emsg(_(e_re_damg)); |
| 7 | 2263 goto exit; |
| 2264 } | |
| 2265 else | |
| 2266 { | |
| 2267 if (backslash && (*s == CAR || *s == '\\')) | |
| 2268 { | |
| 2269 /* | |
| 2270 * Insert a backslash in front of a CR, otherwise | |
| 2271 * it will be replaced by a line break. | |
| 2272 * Number of backslashes will be halved later, | |
| 2273 * double them here. | |
| 2274 */ | |
| 2275 if (copy) | |
| 2276 { | |
| 2277 dst[0] = '\\'; | |
| 2278 dst[1] = *s; | |
| 2279 } | |
| 2280 dst += 2; | |
| 2281 } | |
| 2282 else | |
| 2283 { | |
| 772 | 2284 if (has_mbyte) |
| 2285 c = mb_ptr2char(s); | |
| 2286 else | |
| 2287 c = *s; | |
| 2288 | |
| 4244 | 2289 if (func_one != (fptr_T)NULL) |
|
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|
2290 // Turbo C complains without the typecast |
| 4244 | 2291 func_one = (fptr_T)(func_one(&cc, c)); |
| 2292 else if (func_all != (fptr_T)NULL) | |
|
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|
2293 // Turbo C complains without the typecast |
| 4244 | 2294 func_all = (fptr_T)(func_all(&cc, c)); |
|
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diff
changeset
|
2295 else // just copy |
| 772 | 2296 cc = c; |
| 2297 | |
| 2298 if (has_mbyte) | |
| 7 | 2299 { |
| 1332 | 2300 int l; |
| 2301 | |
|
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|
2302 // Copy composing characters separately, one |
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diff
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|
2303 // at a time. |
| 1332 | 2304 if (enc_utf8) |
| 2305 l = utf_ptr2len(s) - 1; | |
| 2306 else | |
| 2307 l = mb_ptr2len(s) - 1; | |
| 772 | 2308 |
| 2309 s += l; | |
| 2310 len -= l; | |
| 2311 if (copy) | |
| 2312 mb_char2bytes(cc, dst); | |
| 2313 dst += mb_char2len(cc) - 1; | |
| 7 | 2314 } |
|
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diff
changeset
|
2315 else if (copy) |
| 772 | 2316 *dst = cc; |
| 2317 dst++; | |
| 7 | 2318 } |
| 772 | 2319 |
| 7 | 2320 ++s; |
| 2321 --len; | |
| 2322 } | |
| 2323 } | |
| 2324 } | |
| 2325 no = -1; | |
| 2326 } | |
| 2327 } | |
| 2328 if (copy) | |
| 2329 *dst = NUL; | |
| 2330 | |
| 2331 exit: | |
| 2332 return (int)((dst - dest) + 1); | |
| 2333 } | |
| 2334 | |
| 2335 #ifdef FEAT_EVAL | |
| 2336 /* | |
| 2011 | 2337 * Call reg_getline() with the line numbers from the submatch. If a |
| 2338 * substitute() was used the reg_maxline and other values have been | |
| 2339 * overwritten. | |
| 2340 */ | |
| 2341 static char_u * | |
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changeset
|
2342 reg_getline_submatch(linenr_T lnum) |
| 2011 | 2343 { |
| 2344 char_u *s; | |
|
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|
2345 linenr_T save_first = rex.reg_firstlnum; |
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d76ccdacb41e
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diff
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|
2346 linenr_T save_max = rex.reg_maxline; |
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d76ccdacb41e
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2347 |
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d76ccdacb41e
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Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2348 rex.reg_firstlnum = rsm.sm_firstlnum; |
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d76ccdacb41e
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2349 rex.reg_maxline = rsm.sm_maxline; |
| 2011 | 2350 |
| 2351 s = reg_getline(lnum); | |
| 2352 | |
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|
2353 rex.reg_firstlnum = save_first; |
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diff
changeset
|
2354 rex.reg_maxline = save_max; |
| 2011 | 2355 return s; |
| 2356 } | |
| 2357 | |
| 2358 /* | |
| 1209 | 2359 * Used for the submatch() function: get the string from the n'th submatch in |
| 7 | 2360 * allocated memory. |
| 2361 * Returns NULL when not in a ":s" command and for a non-existing submatch. | |
| 2362 */ | |
| 2363 char_u * | |
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changeset
|
2364 reg_submatch(int no) |
| 7 | 2365 { |
| 2366 char_u *retval = NULL; | |
| 2367 char_u *s; | |
| 2368 int len; | |
| 2369 int round; | |
| 2370 linenr_T lnum; | |
| 2371 | |
| 840 | 2372 if (!can_f_submatch || no < 0) |
| 7 | 2373 return NULL; |
| 2374 | |
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|
2375 if (rsm.sm_match == NULL) |
| 7 | 2376 { |
| 2377 /* | |
| 2378 * First round: compute the length and allocate memory. | |
| 2379 * Second round: copy the text. | |
| 2380 */ | |
| 2381 for (round = 1; round <= 2; ++round) | |
| 2382 { | |
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10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2383 lnum = rsm.sm_mmatch->startpos[no].lnum; |
|
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2384 if (lnum < 0 || rsm.sm_mmatch->endpos[no].lnum < 0) |
| 7 | 2385 return NULL; |
| 2386 | |
|
16040
13ab270dd68d
patch 8.1.1025: checking NULL pointer after addition
Bram Moolenaar <Bram@vim.org>
parents:
15967
diff
changeset
|
2387 s = reg_getline_submatch(lnum); |
|
13ab270dd68d
patch 8.1.1025: checking NULL pointer after addition
Bram Moolenaar <Bram@vim.org>
parents:
15967
diff
changeset
|
2388 if (s == NULL) // anti-crash check, cannot happen? |
| 7 | 2389 break; |
|
16040
13ab270dd68d
patch 8.1.1025: checking NULL pointer after addition
Bram Moolenaar <Bram@vim.org>
parents:
15967
diff
changeset
|
2390 s += rsm.sm_mmatch->startpos[no].col; |
|
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2391 if (rsm.sm_mmatch->endpos[no].lnum == lnum) |
| 7 | 2392 { |
|
18812
d34ec6fe207d
patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18576
diff
changeset
|
2393 // Within one line: take form start to end col. |
|
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2394 len = rsm.sm_mmatch->endpos[no].col |
|
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2395 - rsm.sm_mmatch->startpos[no].col; |
| 7 | 2396 if (round == 2) |
| 418 | 2397 vim_strncpy(retval, s, len); |
| 7 | 2398 ++len; |
| 2399 } | |
| 2400 else | |
| 2401 { | |
|
18812
d34ec6fe207d
patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18576
diff
changeset
|
2402 // Multiple lines: take start line from start col, middle |
|
d34ec6fe207d
patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18576
diff
changeset
|
2403 // lines completely and end line up to end col. |
| 7 | 2404 len = (int)STRLEN(s); |
| 2405 if (round == 2) | |
| 2406 { | |
| 2407 STRCPY(retval, s); | |
| 2408 retval[len] = '\n'; | |
| 2409 } | |
| 2410 ++len; | |
| 2411 ++lnum; | |
|
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2412 while (lnum < rsm.sm_mmatch->endpos[no].lnum) |
| 7 | 2413 { |
| 2011 | 2414 s = reg_getline_submatch(lnum++); |
| 7 | 2415 if (round == 2) |
| 2416 STRCPY(retval + len, s); | |
| 2417 len += (int)STRLEN(s); | |
| 2418 if (round == 2) | |
| 2419 retval[len] = '\n'; | |
| 2420 ++len; | |
| 2421 } | |
| 2422 if (round == 2) | |
| 2011 | 2423 STRNCPY(retval + len, reg_getline_submatch(lnum), |
|
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2424 rsm.sm_mmatch->endpos[no].col); |
|
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2425 len += rsm.sm_mmatch->endpos[no].col; |
| 7 | 2426 if (round == 2) |
| 2427 retval[len] = NUL; | |
| 2428 ++len; | |
| 2429 } | |
| 2430 | |
| 840 | 2431 if (retval == NULL) |
| 7 | 2432 { |
|
16768
695d9ef00b03
patch 8.1.1386: unessesary type casts for lalloc()
Bram Moolenaar <Bram@vim.org>
parents:
16764
diff
changeset
|
2433 retval = alloc(len); |
| 840 | 2434 if (retval == NULL) |
| 7 | 2435 return NULL; |
| 2436 } | |
| 2437 } | |
| 2438 } | |
| 2439 else | |
| 2440 { | |
|
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2441 s = rsm.sm_match->startp[no]; |
|
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2442 if (s == NULL || rsm.sm_match->endp[no] == NULL) |
| 7 | 2443 retval = NULL; |
| 2444 else | |
|
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2445 retval = vim_strnsave(s, (int)(rsm.sm_match->endp[no] - s)); |
| 7 | 2446 } |
| 2447 | |
| 2448 return retval; | |
| 2449 } | |
| 5794 | 2450 |
| 2451 /* | |
| 2452 * Used for the submatch() function with the optional non-zero argument: get | |
| 2453 * the list of strings from the n'th submatch in allocated memory with NULs | |
| 2454 * represented in NLs. | |
| 2455 * Returns a list of allocated strings. Returns NULL when not in a ":s" | |
| 2456 * command, for a non-existing submatch and for any error. | |
| 2457 */ | |
| 2458 list_T * | |
|
7833
c079097365f3
commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
2459 reg_submatch_list(int no) |
| 5794 | 2460 { |
| 2461 char_u *s; | |
| 2462 linenr_T slnum; | |
| 2463 linenr_T elnum; | |
| 2464 colnr_T scol; | |
| 2465 colnr_T ecol; | |
| 2466 int i; | |
| 2467 list_T *list; | |
| 2468 int error = FALSE; | |
| 2469 | |
| 2470 if (!can_f_submatch || no < 0) | |
| 2471 return NULL; | |
| 2472 | |
|
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2473 if (rsm.sm_match == NULL) |
| 5794 | 2474 { |
|
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2475 slnum = rsm.sm_mmatch->startpos[no].lnum; |
|
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2476 elnum = rsm.sm_mmatch->endpos[no].lnum; |
| 5794 | 2477 if (slnum < 0 || elnum < 0) |
| 2478 return NULL; | |
| 2479 | |
|
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2480 scol = rsm.sm_mmatch->startpos[no].col; |
|
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2481 ecol = rsm.sm_mmatch->endpos[no].col; |
| 5794 | 2482 |
| 2483 list = list_alloc(); | |
| 2484 if (list == NULL) | |
| 2485 return NULL; | |
| 2486 | |
| 2487 s = reg_getline_submatch(slnum) + scol; | |
| 2488 if (slnum == elnum) | |
| 2489 { | |
| 2490 if (list_append_string(list, s, ecol - scol) == FAIL) | |
| 2491 error = TRUE; | |
| 2492 } | |
| 2493 else | |
| 2494 { | |
| 2495 if (list_append_string(list, s, -1) == FAIL) | |
| 2496 error = TRUE; | |
| 2497 for (i = 1; i < elnum - slnum; i++) | |
| 2498 { | |
| 2499 s = reg_getline_submatch(slnum + i); | |
| 2500 if (list_append_string(list, s, -1) == FAIL) | |
| 2501 error = TRUE; | |
| 2502 } | |
| 2503 s = reg_getline_submatch(elnum); | |
| 2504 if (list_append_string(list, s, ecol) == FAIL) | |
| 2505 error = TRUE; | |
| 2506 } | |
| 2507 } | |
| 2508 else | |
| 2509 { | |
|
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2510 s = rsm.sm_match->startp[no]; |
|
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2511 if (s == NULL || rsm.sm_match->endp[no] == NULL) |
| 5794 | 2512 return NULL; |
| 2513 list = list_alloc(); | |
| 2514 if (list == NULL) | |
| 2515 return NULL; | |
| 2516 if (list_append_string(list, s, | |
|
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2517 (int)(rsm.sm_match->endp[no] - s)) == FAIL) |
| 5794 | 2518 error = TRUE; |
| 2519 } | |
| 2520 | |
| 2521 if (error) | |
| 2522 { | |
|
8863
e1b84109506a
commit https://github.com/vim/vim/commit/107e1eef1df3b786ad3ad49fbdb9e058649303b5
Christian Brabandt <cb@256bit.org>
parents:
8825
diff
changeset
|
2523 list_free(list); |
| 5794 | 2524 return NULL; |
| 2525 } | |
| 2526 return list; | |
| 2527 } | |
| 7 | 2528 #endif |
| 4444 | 2529 |
|
19405
08f4dc2ba716
patch 8.2.0260: several lines of code are duplicated
Bram Moolenaar <Bram@vim.org>
parents:
19384
diff
changeset
|
2530 /* |
|
08f4dc2ba716
patch 8.2.0260: several lines of code are duplicated
Bram Moolenaar <Bram@vim.org>
parents:
19384
diff
changeset
|
2531 * Initialize the values used for matching against multiple lines |
|
08f4dc2ba716
patch 8.2.0260: several lines of code are duplicated
Bram Moolenaar <Bram@vim.org>
parents:
19384
diff
changeset
|
2532 */ |
|
08f4dc2ba716
patch 8.2.0260: several lines of code are duplicated
Bram Moolenaar <Bram@vim.org>
parents:
19384
diff
changeset
|
2533 static void |
|
08f4dc2ba716
patch 8.2.0260: several lines of code are duplicated
Bram Moolenaar <Bram@vim.org>
parents:
19384
diff
changeset
|
2534 init_regexec_multi( |
|
08f4dc2ba716
patch 8.2.0260: several lines of code are duplicated
Bram Moolenaar <Bram@vim.org>
parents:
19384
diff
changeset
|
2535 regmmatch_T *rmp, |
|
08f4dc2ba716
patch 8.2.0260: several lines of code are duplicated
Bram Moolenaar <Bram@vim.org>
parents:
19384
diff
changeset
|
2536 win_T *win, // window in which to search or NULL |
|
08f4dc2ba716
patch 8.2.0260: several lines of code are duplicated
Bram Moolenaar <Bram@vim.org>
parents:
19384
diff
changeset
|
2537 buf_T *buf, // buffer in which to search |
|
08f4dc2ba716
patch 8.2.0260: several lines of code are duplicated
Bram Moolenaar <Bram@vim.org>
parents:
19384
diff
changeset
|
2538 linenr_T lnum) // nr of line to start looking for match |
|
08f4dc2ba716
patch 8.2.0260: several lines of code are duplicated
Bram Moolenaar <Bram@vim.org>
parents:
19384
diff
changeset
|
2539 { |
|
08f4dc2ba716
patch 8.2.0260: several lines of code are duplicated
Bram Moolenaar <Bram@vim.org>
parents:
19384
diff
changeset
|
2540 rex.reg_match = NULL; |
|
08f4dc2ba716
patch 8.2.0260: several lines of code are duplicated
Bram Moolenaar <Bram@vim.org>
parents:
19384
diff
changeset
|
2541 rex.reg_mmatch = rmp; |
|
08f4dc2ba716
patch 8.2.0260: several lines of code are duplicated
Bram Moolenaar <Bram@vim.org>
parents:
19384
diff
changeset
|
2542 rex.reg_buf = buf; |
|
08f4dc2ba716
patch 8.2.0260: several lines of code are duplicated
Bram Moolenaar <Bram@vim.org>
parents:
19384
diff
changeset
|
2543 rex.reg_win = win; |
|
08f4dc2ba716
patch 8.2.0260: several lines of code are duplicated
Bram Moolenaar <Bram@vim.org>
parents:
19384
diff
changeset
|
2544 rex.reg_firstlnum = lnum; |
|
08f4dc2ba716
patch 8.2.0260: several lines of code are duplicated
Bram Moolenaar <Bram@vim.org>
parents:
19384
diff
changeset
|
2545 rex.reg_maxline = rex.reg_buf->b_ml.ml_line_count - lnum; |
|
08f4dc2ba716
patch 8.2.0260: several lines of code are duplicated
Bram Moolenaar <Bram@vim.org>
parents:
19384
diff
changeset
|
2546 rex.reg_line_lbr = FALSE; |
|
08f4dc2ba716
patch 8.2.0260: several lines of code are duplicated
Bram Moolenaar <Bram@vim.org>
parents:
19384
diff
changeset
|
2547 rex.reg_ic = rmp->rmm_ic; |
|
08f4dc2ba716
patch 8.2.0260: several lines of code are duplicated
Bram Moolenaar <Bram@vim.org>
parents:
19384
diff
changeset
|
2548 rex.reg_icombine = FALSE; |
|
08f4dc2ba716
patch 8.2.0260: several lines of code are duplicated
Bram Moolenaar <Bram@vim.org>
parents:
19384
diff
changeset
|
2549 rex.reg_maxcol = rmp->rmm_maxcol; |
|
08f4dc2ba716
patch 8.2.0260: several lines of code are duplicated
Bram Moolenaar <Bram@vim.org>
parents:
19384
diff
changeset
|
2550 } |
|
08f4dc2ba716
patch 8.2.0260: several lines of code are duplicated
Bram Moolenaar <Bram@vim.org>
parents:
19384
diff
changeset
|
2551 |
|
18019
68fd5296bf73
patch 8.1.2005: the regexp.c file is too big
Bram Moolenaar <Bram@vim.org>
parents:
17966
diff
changeset
|
2552 #include "regexp_bt.c" |
|
68fd5296bf73
patch 8.1.2005: the regexp.c file is too big
Bram Moolenaar <Bram@vim.org>
parents:
17966
diff
changeset
|
2553 |
| 4444 | 2554 static regengine_T bt_regengine = |
| 2555 { | |
| 2556 bt_regcomp, | |
|
4805
66803af09906
updated for version 7.3.1149
Bram Moolenaar <bram@vim.org>
parents:
4770
diff
changeset
|
2557 bt_regfree, |
| 4444 | 2558 bt_regexec_nl, |
| 6328 | 2559 bt_regexec_multi, |
| 2560 (char_u *)"" | |
| 4444 | 2561 }; |
| 2562 | |
| 2563 #include "regexp_nfa.c" | |
| 2564 | |
| 2565 static regengine_T nfa_regengine = | |
| 2566 { | |
| 2567 nfa_regcomp, | |
|
4805
66803af09906
updated for version 7.3.1149
Bram Moolenaar <bram@vim.org>
parents:
4770
diff
changeset
|
2568 nfa_regfree, |
| 4444 | 2569 nfa_regexec_nl, |
| 6328 | 2570 nfa_regexec_multi, |
| 2571 (char_u *)"" | |
| 4444 | 2572 }; |
| 2573 | |
|
18812
d34ec6fe207d
patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18576
diff
changeset
|
2574 // Which regexp engine to use? Needed for vim_regcomp(). |
|
d34ec6fe207d
patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18576
diff
changeset
|
2575 // Must match with 'regexpengine'. |
| 4444 | 2576 static int regexp_engine = 0; |
| 6328 | 2577 |
| 4444 | 2578 #ifdef DEBUG |
| 2579 static char_u regname[][30] = { | |
| 2580 "AUTOMATIC Regexp Engine", | |
|
4579
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4505
diff
changeset
|
2581 "BACKTRACKING Regexp Engine", |
| 4444 | 2582 "NFA Regexp Engine" |
| 2583 }; | |
| 2584 #endif | |
| 2585 | |
| 2586 /* | |
| 2587 * Compile a regular expression into internal code. | |
|
4805
66803af09906
updated for version 7.3.1149
Bram Moolenaar <bram@vim.org>
parents:
4770
diff
changeset
|
2588 * Returns the program in allocated memory. |
|
66803af09906
updated for version 7.3.1149
Bram Moolenaar <bram@vim.org>
parents:
4770
diff
changeset
|
2589 * Use vim_regfree() to free the memory. |
|
66803af09906
updated for version 7.3.1149
Bram Moolenaar <bram@vim.org>
parents:
4770
diff
changeset
|
2590 * Returns NULL for an error. |
| 4444 | 2591 */ |
| 2592 regprog_T * | |
|
7833
c079097365f3
commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
2593 vim_regcomp(char_u *expr_arg, int re_flags) |
| 4444 | 2594 { |
| 2595 regprog_T *prog = NULL; | |
| 2596 char_u *expr = expr_arg; | |
|
18949
5c405689da3e
patch 8.2.0035: saving and restoring called_emsg is clumsy
Bram Moolenaar <Bram@vim.org>
parents:
18812
diff
changeset
|
2597 int called_emsg_before; |
| 4444 | 2598 |
| 2599 regexp_engine = p_re; | |
| 2600 | |
|
18812
d34ec6fe207d
patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18576
diff
changeset
|
2601 // Check for prefix "\%#=", that sets the regexp engine |
| 4444 | 2602 if (STRNCMP(expr, "\\%#=", 4) == 0) |
| 2603 { | |
| 2604 int newengine = expr[4] - '0'; | |
| 2605 | |
| 2606 if (newengine == AUTOMATIC_ENGINE | |
| 2607 || newengine == BACKTRACKING_ENGINE | |
| 2608 || newengine == NFA_ENGINE) | |
| 2609 { | |
| 2610 regexp_engine = expr[4] - '0'; | |
| 2611 expr += 5; | |
| 2612 #ifdef DEBUG | |
|
15470
55ccc2d353bd
patch 8.1.0743: giving error messages is not flexible
Bram Moolenaar <Bram@vim.org>
parents:
15339
diff
changeset
|
2613 smsg("New regexp mode selected (%d): %s", |
| 5897 | 2614 regexp_engine, regname[newengine]); |
| 4444 | 2615 #endif |
| 2616 } | |
| 2617 else | |
| 2618 { | |
|
15470
55ccc2d353bd
patch 8.1.0743: giving error messages is not flexible
Bram Moolenaar <Bram@vim.org>
parents:
15339
diff
changeset
|
2619 emsg(_("E864: \\%#= can only be followed by 0, 1, or 2. The automatic engine will be used ")); |
| 4444 | 2620 regexp_engine = AUTOMATIC_ENGINE; |
| 2621 } | |
| 2622 } | |
|
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
2623 #ifdef DEBUG |
| 4444 | 2624 bt_regengine.expr = expr; |
| 2625 nfa_regengine.expr = expr; | |
|
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
2626 #endif |
|
15856
e44b7caaf373
patch 8.1.0935: old regexp engine may use invalid buffer
Bram Moolenaar <Bram@vim.org>
parents:
15854
diff
changeset
|
2627 // reg_iswordc() uses rex.reg_buf |
|
e44b7caaf373
patch 8.1.0935: old regexp engine may use invalid buffer
Bram Moolenaar <Bram@vim.org>
parents:
15854
diff
changeset
|
2628 rex.reg_buf = curbuf; |
| 4444 | 2629 |
| 2630 /* | |
| 2631 * First try the NFA engine, unless backtracking was requested. | |
| 2632 */ | |
|
18949
5c405689da3e
patch 8.2.0035: saving and restoring called_emsg is clumsy
Bram Moolenaar <Bram@vim.org>
parents:
18812
diff
changeset
|
2633 called_emsg_before = called_emsg; |
| 4444 | 2634 if (regexp_engine != BACKTRACKING_ENGINE) |
|
13244
ac42c4b11dbc
patch 8.0.1496: clearing a pointer takes two lines
Christian Brabandt <cb@256bit.org>
parents:
12752
diff
changeset
|
2635 prog = nfa_regengine.regcomp(expr, |
| 6533 | 2636 re_flags + (regexp_engine == AUTOMATIC_ENGINE ? RE_AUTO : 0)); |
| 4444 | 2637 else |
| 2638 prog = bt_regengine.regcomp(expr, re_flags); | |
| 2639 | |
|
18812
d34ec6fe207d
patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18576
diff
changeset
|
2640 // Check for error compiling regexp with initial engine. |
| 6328 | 2641 if (prog == NULL) |
| 4444 | 2642 { |
| 4460 | 2643 #ifdef BT_REGEXP_DEBUG_LOG |
|
18812
d34ec6fe207d
patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18576
diff
changeset
|
2644 if (regexp_engine != BACKTRACKING_ENGINE) // debugging log for NFA |
| 4444 | 2645 { |
| 2646 FILE *f; | |
| 4460 | 2647 f = fopen(BT_REGEXP_DEBUG_LOG_NAME, "a"); |
| 4444 | 2648 if (f) |
| 2649 { | |
|
4762
47906f888725
updated for version 7.3.1128
Bram Moolenaar <bram@vim.org>
parents:
4760
diff
changeset
|
2650 fprintf(f, "Syntax error in \"%s\"\n", expr); |
| 4444 | 2651 fclose(f); |
| 2652 } | |
| 2653 else | |
|
15470
55ccc2d353bd
patch 8.1.0743: giving error messages is not flexible
Bram Moolenaar <Bram@vim.org>
parents:
15339
diff
changeset
|
2654 semsg("(NFA) Could not open \"%s\" to write !!!", |
|
13244
ac42c4b11dbc
patch 8.0.1496: clearing a pointer takes two lines
Christian Brabandt <cb@256bit.org>
parents:
12752
diff
changeset
|
2655 BT_REGEXP_DEBUG_LOG_NAME); |
| 4444 | 2656 } |
| 2657 #endif | |
| 2658 /* | |
| 6328 | 2659 * If the NFA engine failed, try the backtracking engine. |
| 6533 | 2660 * The NFA engine also fails for patterns that it can't handle well |
| 2661 * but are still valid patterns, thus a retry should work. | |
|
15935
ff00d207cc5e
patch 8.1.0973: pattern with syntax error gives threee error messages
Bram Moolenaar <Bram@vim.org>
parents:
15860
diff
changeset
|
2662 * But don't try if an error message was given. |
| 6533 | 2663 */ |
|
18949
5c405689da3e
patch 8.2.0035: saving and restoring called_emsg is clumsy
Bram Moolenaar <Bram@vim.org>
parents:
18812
diff
changeset
|
2664 if (regexp_engine == AUTOMATIC_ENGINE |
|
5c405689da3e
patch 8.2.0035: saving and restoring called_emsg is clumsy
Bram Moolenaar <Bram@vim.org>
parents:
18812
diff
changeset
|
2665 && called_emsg == called_emsg_before) |
| 6328 | 2666 { |
| 6533 | 2667 regexp_engine = BACKTRACKING_ENGINE; |
|
4762
47906f888725
updated for version 7.3.1128
Bram Moolenaar <bram@vim.org>
parents:
4760
diff
changeset
|
2668 prog = bt_regengine.regcomp(expr, re_flags); |
| 6328 | 2669 } |
|
4762
47906f888725
updated for version 7.3.1128
Bram Moolenaar <bram@vim.org>
parents:
4760
diff
changeset
|
2670 } |
| 4444 | 2671 |
| 6328 | 2672 if (prog != NULL) |
| 2673 { | |
|
18812
d34ec6fe207d
patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18576
diff
changeset
|
2674 // Store the info needed to call regcomp() again when the engine turns |
|
d34ec6fe207d
patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18576
diff
changeset
|
2675 // out to be very slow when executing it. |
| 6328 | 2676 prog->re_engine = regexp_engine; |
| 2677 prog->re_flags = re_flags; | |
| 2678 } | |
| 2679 | |
| 4444 | 2680 return prog; |
| 2681 } | |
| 2682 | |
| 2683 /* | |
|
4805
66803af09906
updated for version 7.3.1149
Bram Moolenaar <bram@vim.org>
parents:
4770
diff
changeset
|
2684 * Free a compiled regexp program, returned by vim_regcomp(). |
|
66803af09906
updated for version 7.3.1149
Bram Moolenaar <bram@vim.org>
parents:
4770
diff
changeset
|
2685 */ |
|
66803af09906
updated for version 7.3.1149
Bram Moolenaar <bram@vim.org>
parents:
4770
diff
changeset
|
2686 void |
|
7833
c079097365f3
commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
2687 vim_regfree(regprog_T *prog) |
|
4805
66803af09906
updated for version 7.3.1149
Bram Moolenaar <bram@vim.org>
parents:
4770
diff
changeset
|
2688 { |
|
66803af09906
updated for version 7.3.1149
Bram Moolenaar <bram@vim.org>
parents:
4770
diff
changeset
|
2689 if (prog != NULL) |
|
66803af09906
updated for version 7.3.1149
Bram Moolenaar <bram@vim.org>
parents:
4770
diff
changeset
|
2690 prog->engine->regfree(prog); |
|
66803af09906
updated for version 7.3.1149
Bram Moolenaar <bram@vim.org>
parents:
4770
diff
changeset
|
2691 } |
|
66803af09906
updated for version 7.3.1149
Bram Moolenaar <bram@vim.org>
parents:
4770
diff
changeset
|
2692 |
|
18019
68fd5296bf73
patch 8.1.2005: the regexp.c file is too big
Bram Moolenaar <Bram@vim.org>
parents:
17966
diff
changeset
|
2693 #if defined(EXITFREE) || defined(PROTO) |
|
68fd5296bf73
patch 8.1.2005: the regexp.c file is too big
Bram Moolenaar <Bram@vim.org>
parents:
17966
diff
changeset
|
2694 void |
|
68fd5296bf73
patch 8.1.2005: the regexp.c file is too big
Bram Moolenaar <Bram@vim.org>
parents:
17966
diff
changeset
|
2695 free_regexp_stuff(void) |
|
68fd5296bf73
patch 8.1.2005: the regexp.c file is too big
Bram Moolenaar <Bram@vim.org>
parents:
17966
diff
changeset
|
2696 { |
|
68fd5296bf73
patch 8.1.2005: the regexp.c file is too big
Bram Moolenaar <Bram@vim.org>
parents:
17966
diff
changeset
|
2697 ga_clear(®stack); |
|
68fd5296bf73
patch 8.1.2005: the regexp.c file is too big
Bram Moolenaar <Bram@vim.org>
parents:
17966
diff
changeset
|
2698 ga_clear(&backpos); |
|
68fd5296bf73
patch 8.1.2005: the regexp.c file is too big
Bram Moolenaar <Bram@vim.org>
parents:
17966
diff
changeset
|
2699 vim_free(reg_tofree); |
|
68fd5296bf73
patch 8.1.2005: the regexp.c file is too big
Bram Moolenaar <Bram@vim.org>
parents:
17966
diff
changeset
|
2700 vim_free(reg_prev_sub); |
|
68fd5296bf73
patch 8.1.2005: the regexp.c file is too big
Bram Moolenaar <Bram@vim.org>
parents:
17966
diff
changeset
|
2701 } |
|
68fd5296bf73
patch 8.1.2005: the regexp.c file is too big
Bram Moolenaar <Bram@vim.org>
parents:
17966
diff
changeset
|
2702 #endif |
|
68fd5296bf73
patch 8.1.2005: the regexp.c file is too big
Bram Moolenaar <Bram@vim.org>
parents:
17966
diff
changeset
|
2703 |
| 6328 | 2704 #ifdef FEAT_EVAL |
| 2705 static void | |
|
7833
c079097365f3
commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
2706 report_re_switch(char_u *pat) |
| 6328 | 2707 { |
| 2708 if (p_verbose > 0) | |
| 2709 { | |
| 2710 verbose_enter(); | |
|
15543
dd725a8ab112
patch 8.1.0779: argument for message functions is inconsistent
Bram Moolenaar <Bram@vim.org>
parents:
15480
diff
changeset
|
2711 msg_puts(_("Switching to backtracking RE engine for pattern: ")); |
|
dd725a8ab112
patch 8.1.0779: argument for message functions is inconsistent
Bram Moolenaar <Bram@vim.org>
parents:
15480
diff
changeset
|
2712 msg_puts((char *)pat); |
| 6328 | 2713 verbose_leave(); |
| 2714 } | |
| 2715 } | |
| 2716 #endif | |
| 2717 | |
|
15555
d89c5b339c2a
patch 8.1.0785: depending on the configuration some functions are unused
Bram Moolenaar <Bram@vim.org>
parents:
15543
diff
changeset
|
2718 #if (defined(FEAT_X11) && (defined(FEAT_TITLE) || defined(FEAT_XCLIPBOARD))) \ |
|
d89c5b339c2a
patch 8.1.0785: depending on the configuration some functions are unused
Bram Moolenaar <Bram@vim.org>
parents:
15543
diff
changeset
|
2719 || defined(PROTO) |
|
4805
66803af09906
updated for version 7.3.1149
Bram Moolenaar <bram@vim.org>
parents:
4770
diff
changeset
|
2720 /* |
|
15306
7fff2d18e191
patch 8.1.0661: clipboard regexp might be used recursively
Bram Moolenaar <Bram@vim.org>
parents:
15211
diff
changeset
|
2721 * Return whether "prog" is currently being executed. |
|
7fff2d18e191
patch 8.1.0661: clipboard regexp might be used recursively
Bram Moolenaar <Bram@vim.org>
parents:
15211
diff
changeset
|
2722 */ |
|
7fff2d18e191
patch 8.1.0661: clipboard regexp might be used recursively
Bram Moolenaar <Bram@vim.org>
parents:
15211
diff
changeset
|
2723 int |
|
7fff2d18e191
patch 8.1.0661: clipboard regexp might be used recursively
Bram Moolenaar <Bram@vim.org>
parents:
15211
diff
changeset
|
2724 regprog_in_use(regprog_T *prog) |
|
7fff2d18e191
patch 8.1.0661: clipboard regexp might be used recursively
Bram Moolenaar <Bram@vim.org>
parents:
15211
diff
changeset
|
2725 { |
|
7fff2d18e191
patch 8.1.0661: clipboard regexp might be used recursively
Bram Moolenaar <Bram@vim.org>
parents:
15211
diff
changeset
|
2726 return prog->re_in_use; |
|
7fff2d18e191
patch 8.1.0661: clipboard regexp might be used recursively
Bram Moolenaar <Bram@vim.org>
parents:
15211
diff
changeset
|
2727 } |
|
15555
d89c5b339c2a
patch 8.1.0785: depending on the configuration some functions are unused
Bram Moolenaar <Bram@vim.org>
parents:
15543
diff
changeset
|
2728 #endif |
|
15306
7fff2d18e191
patch 8.1.0661: clipboard regexp might be used recursively
Bram Moolenaar <Bram@vim.org>
parents:
15211
diff
changeset
|
2729 |
|
7fff2d18e191
patch 8.1.0661: clipboard regexp might be used recursively
Bram Moolenaar <Bram@vim.org>
parents:
15211
diff
changeset
|
2730 /* |
| 4444 | 2731 * Match a regexp against a string. |
| 2732 * "rmp->regprog" is a compiled regexp as returned by vim_regcomp(). | |
| 6375 | 2733 * Note: "rmp->regprog" may be freed and changed. |
| 4444 | 2734 * Uses curbuf for line count and 'iskeyword'. |
| 6328 | 2735 * When "nl" is TRUE consider a "\n" in "line" to be a line break. |
| 4444 | 2736 * |
| 2737 * Return TRUE if there is a match, FALSE if not. | |
| 2738 */ | |
| 6328 | 2739 static int |
|
11529
998d2cf59caa
patch 8.0.0647: syntax highlighting can make cause a freeze
Christian Brabandt <cb@256bit.org>
parents:
11527
diff
changeset
|
2740 vim_regexec_string( |
|
7833
c079097365f3
commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
2741 regmatch_T *rmp, |
|
18812
d34ec6fe207d
patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18576
diff
changeset
|
2742 char_u *line, // string to match against |
|
d34ec6fe207d
patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18576
diff
changeset
|
2743 colnr_T col, // column to start looking for match |
|
7833
c079097365f3
commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
2744 int nl) |
| 6328 | 2745 { |
|
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2746 int result; |
|
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2747 regexec_T rex_save; |
|
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2748 int rex_in_use_save = rex_in_use; |
|
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2749 |
|
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
2750 // Cannot use the same prog recursively, it contains state. |
|
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
2751 if (rmp->regprog->re_in_use) |
|
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
2752 { |
|
15470
55ccc2d353bd
patch 8.1.0743: giving error messages is not flexible
Bram Moolenaar <Bram@vim.org>
parents:
15339
diff
changeset
|
2753 emsg(_(e_recursive)); |
|
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
2754 return FALSE; |
|
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
2755 } |
|
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
2756 rmp->regprog->re_in_use = TRUE; |
|
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
2757 |
|
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2758 if (rex_in_use) |
|
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
2759 // Being called recursively, save the state. |
|
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2760 rex_save = rex; |
|
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2761 rex_in_use = TRUE; |
|
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
2762 |
|
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2763 rex.reg_startp = NULL; |
|
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2764 rex.reg_endp = NULL; |
|
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2765 rex.reg_startpos = NULL; |
|
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2766 rex.reg_endpos = NULL; |
|
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2767 |
|
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
2768 result = rmp->regprog->engine->regexec_nl(rmp, line, col, nl); |
|
14358
72d506d94f3f
patch 8.1.0194: possibly use of NULL pointer
Christian Brabandt <cb@256bit.org>
parents:
14354
diff
changeset
|
2769 rmp->regprog->re_in_use = FALSE; |
| 6328 | 2770 |
|
18812
d34ec6fe207d
patch 8.1.2394: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18576
diff
changeset
|
2771 // NFA engine aborted because it's very slow. |
| 6328 | 2772 if (rmp->regprog->re_engine == AUTOMATIC_ENGINE |
| 2773 && result == NFA_TOO_EXPENSIVE) | |
| 2774 { | |
| 2775 int save_p_re = p_re; | |
| 2776 int re_flags = rmp->regprog->re_flags; | |
| 2777 char_u *pat = vim_strsave(((nfa_regprog_T *)rmp->regprog)->pattern); | |
| 2778 | |
| 2779 p_re = BACKTRACKING_ENGINE; | |
| 2780 vim_regfree(rmp->regprog); | |
| 2781 if (pat != NULL) | |
| 2782 { | |
| 2783 #ifdef FEAT_EVAL | |
| 2784 report_re_switch(pat); | |
| 2785 #endif | |
| 2786 rmp->regprog = vim_regcomp(pat, re_flags); | |
| 2787 if (rmp->regprog != NULL) | |
|
14358
72d506d94f3f
patch 8.1.0194: possibly use of NULL pointer
Christian Brabandt <cb@256bit.org>
parents:
14354
diff
changeset
|
2788 { |
|
72d506d94f3f
patch 8.1.0194: possibly use of NULL pointer
Christian Brabandt <cb@256bit.org>
parents:
14354
diff
changeset
|
2789 rmp->regprog->re_in_use = TRUE; |
| 6328 | 2790 result = rmp->regprog->engine->regexec_nl(rmp, line, col, nl); |
|
14358
72d506d94f3f
patch 8.1.0194: possibly use of NULL pointer
Christian Brabandt <cb@256bit.org>
parents:
14354
diff
changeset
|
2791 rmp->regprog->re_in_use = FALSE; |
|
72d506d94f3f
patch 8.1.0194: possibly use of NULL pointer
Christian Brabandt <cb@256bit.org>
parents:
14354
diff
changeset
|
2792 } |
| 6328 | 2793 vim_free(pat); |
| 2794 } | |
| 2795 | |
| 2796 p_re = save_p_re; | |
| 2797 } | |
|
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2798 |
|
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|
2799 rex_in_use = rex_in_use_save; |
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|
2800 if (rex_in_use) |
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|
2801 rex = rex_save; |
|
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|
2802 |
| 6390 | 2803 return result > 0; |
| 6328 | 2804 } |
| 2805 | |
| 6375 | 2806 /* |
| 2807 * Note: "*prog" may be freed and changed. | |
| 6390 | 2808 * Return TRUE if there is a match, FALSE if not. |
| 6375 | 2809 */ |
| 2810 int | |
|
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2811 vim_regexec_prog( |
|
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|
2812 regprog_T **prog, |
|
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|
2813 int ignore_case, |
|
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2814 char_u *line, |
|
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|
2815 colnr_T col) |
| 6375 | 2816 { |
|
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2817 int r; |
|
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|
2818 regmatch_T regmatch; |
| 6375 | 2819 |
| 2820 regmatch.regprog = *prog; | |
| 2821 regmatch.rm_ic = ignore_case; | |
|
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2822 r = vim_regexec_string(®match, line, col, FALSE); |
| 6375 | 2823 *prog = regmatch.regprog; |
| 2824 return r; | |
| 2825 } | |
| 2826 | |
| 2827 /* | |
| 2828 * Note: "rmp->regprog" may be freed and changed. | |
| 6390 | 2829 * Return TRUE if there is a match, FALSE if not. |
| 6375 | 2830 */ |
| 4444 | 2831 int |
|
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2832 vim_regexec(regmatch_T *rmp, char_u *line, colnr_T col) |
| 4444 | 2833 { |
|
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2834 return vim_regexec_string(rmp, line, col, FALSE); |
| 4444 | 2835 } |
| 2836 | |
| 2837 /* | |
| 2838 * Like vim_regexec(), but consider a "\n" in "line" to be a line break. | |
| 6375 | 2839 * Note: "rmp->regprog" may be freed and changed. |
| 6390 | 2840 * Return TRUE if there is a match, FALSE if not. |
| 4444 | 2841 */ |
| 2842 int | |
|
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2843 vim_regexec_nl(regmatch_T *rmp, char_u *line, colnr_T col) |
| 4444 | 2844 { |
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2845 return vim_regexec_string(rmp, line, col, TRUE); |
| 4444 | 2846 } |
| 2847 | |
| 2848 /* | |
| 2849 * Match a regexp against multiple lines. | |
|
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2850 * "rmp->regprog" must be a compiled regexp as returned by vim_regcomp(). |
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2851 * Note: "rmp->regprog" may be freed and changed, even set to NULL. |
| 4444 | 2852 * Uses curbuf for line count and 'iskeyword'. |
| 2853 * | |
| 2854 * Return zero if there is no match. Return number of lines contained in the | |
| 2855 * match otherwise. | |
| 2856 */ | |
| 2857 long | |
|
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2858 vim_regexec_multi( |
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2859 regmmatch_T *rmp, |
|
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2860 win_T *win, // window in which to search or NULL |
|
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2861 buf_T *buf, // buffer in which to search |
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2862 linenr_T lnum, // nr of line to start looking for match |
|
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2863 colnr_T col, // column to start looking for match |
|
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2864 proftime_T *tm, // timeout limit or NULL |
|
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2865 int *timed_out) // flag is set when timeout limit reached |
| 4444 | 2866 { |
|
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2867 int result; |
|
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|
2868 regexec_T rex_save; |
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2869 int rex_in_use_save = rex_in_use; |
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2870 |
|
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2871 // Cannot use the same prog recursively, it contains state. |
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2872 if (rmp->regprog->re_in_use) |
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2873 { |
|
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2874 emsg(_(e_recursive)); |
|
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2875 return FALSE; |
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2876 } |
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2877 rmp->regprog->re_in_use = TRUE; |
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2878 |
|
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2879 if (rex_in_use) |
|
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2880 // Being called recursively, save the state. |
|
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2881 rex_save = rex; |
|
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2882 rex_in_use = TRUE; |
|
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2883 |
|
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2884 result = rmp->regprog->engine->regexec_multi( |
|
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2885 rmp, win, buf, lnum, col, tm, timed_out); |
|
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2886 rmp->regprog->re_in_use = FALSE; |
| 6328 | 2887 |
|
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2888 // NFA engine aborted because it's very slow. |
| 6328 | 2889 if (rmp->regprog->re_engine == AUTOMATIC_ENGINE |
| 2890 && result == NFA_TOO_EXPENSIVE) | |
| 2891 { | |
| 2892 int save_p_re = p_re; | |
| 2893 int re_flags = rmp->regprog->re_flags; | |
| 2894 char_u *pat = vim_strsave(((nfa_regprog_T *)rmp->regprog)->pattern); | |
| 2895 | |
| 2896 p_re = BACKTRACKING_ENGINE; | |
| 2897 vim_regfree(rmp->regprog); | |
| 2898 if (pat != NULL) | |
| 2899 { | |
| 2900 #ifdef FEAT_EVAL | |
| 2901 report_re_switch(pat); | |
| 2902 #endif | |
|
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|
2903 #ifdef FEAT_SYN_HL |
|
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2904 // checking for \z misuse was already done when compiling for NFA, |
|
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2905 // allow all here |
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|
2906 reg_do_extmatch = REX_ALL; |
|
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2907 #endif |
| 6328 | 2908 rmp->regprog = vim_regcomp(pat, re_flags); |
|
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2909 #ifdef FEAT_SYN_HL |
|
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2910 reg_do_extmatch = 0; |
|
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2911 #endif |
|
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2912 |
| 6328 | 2913 if (rmp->regprog != NULL) |
|
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2914 { |
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2915 rmp->regprog->re_in_use = TRUE; |
| 6328 | 2916 result = rmp->regprog->engine->regexec_multi( |
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2917 rmp, win, buf, lnum, col, tm, timed_out); |
|
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|
2918 rmp->regprog->re_in_use = FALSE; |
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|
2919 } |
| 6328 | 2920 vim_free(pat); |
| 2921 } | |
| 2922 p_re = save_p_re; | |
| 2923 } | |
| 2924 | |
|
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|
2925 rex_in_use = rex_in_use_save; |
|
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|
2926 if (rex_in_use) |
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|
2927 rex = rex_save; |
|
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|
2928 |
| 6390 | 2929 return result <= 0 ? 0 : result; |
| 4444 | 2930 } |