Mercurial > vim
annotate src/charset.c @ 20438:1f756e67c0d4
Added tag v8.2.0773 for changeset 3bb4dea4a164e48acd8935a8c29414dd77d2e0e5
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Sat, 16 May 2020 23:30:04 +0200 |
| parents | aadd1cae2ff5 |
| children | 6ff992bf4c82 |
| rev | line source |
|---|---|
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1 /* vi:set ts=8 sts=4 sw=4 noet: |
| 7 | 2 * |
| 3 * VIM - Vi IMproved by Bram Moolenaar | |
| 4 * | |
| 5 * Do ":help uganda" in Vim to read copying and usage conditions. | |
| 6 * Do ":help credits" in Vim to see a list of people who contributed. | |
| 7 * See README.txt for an overview of the Vim source code. | |
| 8 */ | |
| 9 | |
| 10 #include "vim.h" | |
| 11 | |
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12 #if defined(HAVE_WCHAR_H) |
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13 # include <wchar.h> // for towupper() and towlower() |
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14 #endif |
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15 static int win_nolbr_chartabsize(win_T *wp, char_u *s, colnr_T col, int *headp); |
| 7 | 16 |
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17 static unsigned nr2hex(unsigned c); |
| 7 | 18 |
| 19 static int chartab_initialized = FALSE; | |
| 20 | |
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21 // b_chartab[] is an array of 32 bytes, each bit representing one of the |
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22 // characters 0-255. |
| 7 | 23 #define SET_CHARTAB(buf, c) (buf)->b_chartab[(unsigned)(c) >> 3] |= (1 << ((c) & 0x7)) |
| 24 #define RESET_CHARTAB(buf, c) (buf)->b_chartab[(unsigned)(c) >> 3] &= ~(1 << ((c) & 0x7)) | |
| 25 #define GET_CHARTAB(buf, c) ((buf)->b_chartab[(unsigned)(c) >> 3] & (1 << ((c) & 0x7))) | |
| 26 | |
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27 // table used below, see init_chartab() for an explanation |
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28 static char_u g_chartab[256]; |
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29 |
| 7 | 30 /* |
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31 * Flags for g_chartab[]. |
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32 */ |
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33 #define CT_CELL_MASK 0x07 // mask: nr of display cells (1, 2 or 4) |
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34 #define CT_PRINT_CHAR 0x10 // flag: set for printable chars |
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35 #define CT_ID_CHAR 0x20 // flag: set for ID chars |
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36 #define CT_FNAME_CHAR 0x40 // flag: set for file name chars |
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37 |
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38 static int in_win_border(win_T *wp, colnr_T vcol); |
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39 |
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40 /* |
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41 * Fill g_chartab[]. Also fills curbuf->b_chartab[] with flags for keyword |
| 7 | 42 * characters for current buffer. |
| 43 * | |
| 44 * Depends on the option settings 'iskeyword', 'isident', 'isfname', | |
| 45 * 'isprint' and 'encoding'. | |
| 46 * | |
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47 * The index in g_chartab[] depends on 'encoding': |
| 7 | 48 * - For non-multi-byte index with the byte (same as the character). |
| 49 * - For DBCS index with the first byte. | |
| 50 * - For UTF-8 index with the character (when first byte is up to 0x80 it is | |
| 51 * the same as the character, if the first byte is 0x80 and above it depends | |
| 52 * on further bytes). | |
| 53 * | |
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54 * The contents of g_chartab[]: |
| 7 | 55 * - The lower two bits, masked by CT_CELL_MASK, give the number of display |
| 56 * cells the character occupies (1 or 2). Not valid for UTF-8 above 0x80. | |
| 57 * - CT_PRINT_CHAR bit is set when the character is printable (no need to | |
| 58 * translate the character before displaying it). Note that only DBCS | |
| 59 * characters can have 2 display cells and still be printable. | |
| 60 * - CT_FNAME_CHAR bit is set when the character can be in a file name. | |
| 61 * - CT_ID_CHAR bit is set when the character can be in an identifier. | |
| 62 * | |
| 63 * Return FAIL if 'iskeyword', 'isident', 'isfname' or 'isprint' option has an | |
| 64 * error, OK otherwise. | |
| 65 */ | |
| 66 int | |
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67 init_chartab(void) |
| 7 | 68 { |
| 69 return buf_init_chartab(curbuf, TRUE); | |
| 70 } | |
| 71 | |
| 72 int | |
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73 buf_init_chartab( |
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74 buf_T *buf, |
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75 int global) // FALSE: only set buf->b_chartab[] |
| 7 | 76 { |
| 77 int c; | |
| 78 int c2; | |
| 79 char_u *p; | |
| 80 int i; | |
| 81 int tilde; | |
| 82 int do_isalpha; | |
| 83 | |
| 84 if (global) | |
| 85 { | |
| 86 /* | |
| 87 * Set the default size for printable characters: | |
| 88 * From <Space> to '~' is 1 (printable), others are 2 (not printable). | |
| 89 * This also inits all 'isident' and 'isfname' flags to FALSE. | |
| 90 * | |
| 91 * EBCDIC: all chars below ' ' are not printable, all others are | |
| 92 * printable. | |
| 93 */ | |
| 94 c = 0; | |
| 95 while (c < ' ') | |
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96 g_chartab[c++] = (dy_flags & DY_UHEX) ? 4 : 2; |
| 7 | 97 #ifdef EBCDIC |
| 98 while (c < 255) | |
| 99 #else | |
| 100 while (c <= '~') | |
| 101 #endif | |
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102 g_chartab[c++] = 1 + CT_PRINT_CHAR; |
| 7 | 103 while (c < 256) |
| 104 { | |
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105 // UTF-8: bytes 0xa0 - 0xff are printable (latin1) |
| 7 | 106 if (enc_utf8 && c >= 0xa0) |
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107 g_chartab[c++] = CT_PRINT_CHAR + 1; |
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108 // euc-jp characters starting with 0x8e are single width |
| 7 | 109 else if (enc_dbcs == DBCS_JPNU && c == 0x8e) |
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110 g_chartab[c++] = CT_PRINT_CHAR + 1; |
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111 // other double-byte chars can be printable AND double-width |
| 7 | 112 else if (enc_dbcs != 0 && MB_BYTE2LEN(c) == 2) |
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113 g_chartab[c++] = CT_PRINT_CHAR + 2; |
| 7 | 114 else |
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115 // the rest is unprintable by default |
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116 g_chartab[c++] = (dy_flags & DY_UHEX) ? 4 : 2; |
| 7 | 117 } |
| 118 | |
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119 // Assume that every multi-byte char is a filename character. |
| 7 | 120 for (c = 1; c < 256; ++c) |
| 121 if ((enc_dbcs != 0 && MB_BYTE2LEN(c) > 1) | |
| 122 || (enc_dbcs == DBCS_JPNU && c == 0x8e) | |
| 123 || (enc_utf8 && c >= 0xa0)) | |
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124 g_chartab[c] |= CT_FNAME_CHAR; |
| 7 | 125 } |
| 126 | |
| 127 /* | |
| 128 * Init word char flags all to FALSE | |
| 129 */ | |
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130 CLEAR_FIELD(buf->b_chartab); |
| 227 | 131 if (enc_dbcs != 0) |
| 132 for (c = 0; c < 256; ++c) | |
| 133 { | |
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134 // double-byte characters are probably word characters |
| 227 | 135 if (MB_BYTE2LEN(c) == 2) |
| 136 SET_CHARTAB(buf, c); | |
| 137 } | |
| 7 | 138 |
| 139 #ifdef FEAT_LISP | |
| 140 /* | |
| 141 * In lisp mode the '-' character is included in keywords. | |
| 142 */ | |
| 143 if (buf->b_p_lisp) | |
| 144 SET_CHARTAB(buf, '-'); | |
| 145 #endif | |
| 146 | |
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147 // Walk through the 'isident', 'iskeyword', 'isfname' and 'isprint' |
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148 // options Each option is a list of characters, character numbers or |
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149 // ranges, separated by commas, e.g.: "200-210,x,#-178,-" |
| 7 | 150 for (i = global ? 0 : 3; i <= 3; ++i) |
| 151 { | |
| 152 if (i == 0) | |
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153 p = p_isi; // first round: 'isident' |
| 7 | 154 else if (i == 1) |
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155 p = p_isp; // second round: 'isprint' |
| 7 | 156 else if (i == 2) |
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157 p = p_isf; // third round: 'isfname' |
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158 else // i == 3 |
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159 p = buf->b_p_isk; // fourth round: 'iskeyword' |
| 7 | 160 |
| 161 while (*p) | |
| 162 { | |
| 163 tilde = FALSE; | |
| 164 do_isalpha = FALSE; | |
| 165 if (*p == '^' && p[1] != NUL) | |
| 166 { | |
| 167 tilde = TRUE; | |
| 168 ++p; | |
| 169 } | |
| 170 if (VIM_ISDIGIT(*p)) | |
| 171 c = getdigits(&p); | |
| 172 else | |
| 1955 | 173 if (has_mbyte) |
| 174 c = mb_ptr2char_adv(&p); | |
| 175 else | |
| 7 | 176 c = *p++; |
| 177 c2 = -1; | |
| 178 if (*p == '-' && p[1] != NUL) | |
| 179 { | |
| 180 ++p; | |
| 181 if (VIM_ISDIGIT(*p)) | |
| 182 c2 = getdigits(&p); | |
| 183 else | |
| 1979 | 184 if (has_mbyte) |
| 185 c2 = mb_ptr2char_adv(&p); | |
| 186 else | |
| 7 | 187 c2 = *p++; |
| 188 } | |
| 1979 | 189 if (c <= 0 || c >= 256 || (c2 < c && c2 != -1) || c2 >= 256 |
| 7 | 190 || !(*p == NUL || *p == ',')) |
| 191 return FAIL; | |
| 192 | |
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193 if (c2 == -1) // not a range |
| 7 | 194 { |
| 195 /* | |
| 196 * A single '@' (not "@-@"): | |
| 197 * Decide on letters being ID/printable/keyword chars with | |
| 198 * standard function isalpha(). This takes care of locale for | |
| 199 * single-byte characters). | |
| 200 */ | |
| 201 if (c == '@') | |
| 202 { | |
| 203 do_isalpha = TRUE; | |
| 204 c = 1; | |
| 205 c2 = 255; | |
| 206 } | |
| 207 else | |
| 208 c2 = c; | |
| 209 } | |
| 210 while (c <= c2) | |
| 211 { | |
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212 // Use the MB_ functions here, because isalpha() doesn't |
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213 // work properly when 'encoding' is "latin1" and the locale is |
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214 // "C". |
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215 if (!do_isalpha || MB_ISLOWER(c) || MB_ISUPPER(c)) |
| 7 | 216 { |
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217 if (i == 0) // (re)set ID flag |
| 7 | 218 { |
| 219 if (tilde) | |
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220 g_chartab[c] &= ~CT_ID_CHAR; |
| 7 | 221 else |
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222 g_chartab[c] |= CT_ID_CHAR; |
| 7 | 223 } |
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224 else if (i == 1) // (re)set printable |
| 7 | 225 { |
| 226 if ((c < ' ' | |
| 227 #ifndef EBCDIC | |
| 228 || c > '~' | |
| 229 #endif | |
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230 // For double-byte we keep the cell width, so |
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231 // that we can detect it from the first byte. |
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232 ) && !(enc_dbcs && MB_BYTE2LEN(c) == 2)) |
| 7 | 233 { |
| 234 if (tilde) | |
| 235 { | |
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236 g_chartab[c] = (g_chartab[c] & ~CT_CELL_MASK) |
| 7 | 237 + ((dy_flags & DY_UHEX) ? 4 : 2); |
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238 g_chartab[c] &= ~CT_PRINT_CHAR; |
| 7 | 239 } |
| 240 else | |
| 241 { | |
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242 g_chartab[c] = (g_chartab[c] & ~CT_CELL_MASK) + 1; |
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243 g_chartab[c] |= CT_PRINT_CHAR; |
| 7 | 244 } |
| 245 } | |
| 246 } | |
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247 else if (i == 2) // (re)set fname flag |
| 7 | 248 { |
| 249 if (tilde) | |
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250 g_chartab[c] &= ~CT_FNAME_CHAR; |
| 7 | 251 else |
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252 g_chartab[c] |= CT_FNAME_CHAR; |
| 7 | 253 } |
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254 else // i == 3 (re)set keyword flag |
| 7 | 255 { |
| 256 if (tilde) | |
| 257 RESET_CHARTAB(buf, c); | |
| 258 else | |
| 259 SET_CHARTAB(buf, c); | |
| 260 } | |
| 261 } | |
| 262 ++c; | |
| 263 } | |
| 4096 | 264 |
| 265 c = *p; | |
| 7 | 266 p = skip_to_option_part(p); |
| 4096 | 267 if (c == ',' && *p == NUL) |
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268 // Trailing comma is not allowed. |
| 4096 | 269 return FAIL; |
| 7 | 270 } |
| 271 } | |
| 272 chartab_initialized = TRUE; | |
| 273 return OK; | |
| 274 } | |
| 275 | |
| 276 /* | |
| 277 * Translate any special characters in buf[bufsize] in-place. | |
| 278 * The result is a string with only printable characters, but if there is not | |
| 279 * enough room, not all characters will be translated. | |
| 280 */ | |
| 281 void | |
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282 trans_characters( |
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283 char_u *buf, |
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284 int bufsize) |
| 7 | 285 { |
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286 int len; // length of string needing translation |
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287 int room; // room in buffer after string |
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288 char_u *trs; // translated character |
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289 int trs_len; // length of trs[] |
| 7 | 290 |
| 291 len = (int)STRLEN(buf); | |
| 292 room = bufsize - len; | |
| 293 while (*buf != 0) | |
| 294 { | |
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295 // Assume a multi-byte character doesn't need translation. |
| 474 | 296 if (has_mbyte && (trs_len = (*mb_ptr2len)(buf)) > 1) |
| 7 | 297 len -= trs_len; |
| 298 else | |
| 299 { | |
| 300 trs = transchar_byte(*buf); | |
| 301 trs_len = (int)STRLEN(trs); | |
| 302 if (trs_len > 1) | |
| 303 { | |
| 304 room -= trs_len - 1; | |
| 305 if (room <= 0) | |
| 306 return; | |
| 307 mch_memmove(buf + trs_len, buf + 1, (size_t)len); | |
| 308 } | |
| 309 mch_memmove(buf, trs, (size_t)trs_len); | |
| 310 --len; | |
| 311 } | |
| 312 buf += trs_len; | |
| 313 } | |
| 314 } | |
| 315 | |
| 316 /* | |
| 317 * Translate a string into allocated memory, replacing special chars with | |
| 318 * printable chars. Returns NULL when out of memory. | |
| 319 */ | |
| 320 char_u * | |
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321 transstr(char_u *s) |
| 7 | 322 { |
| 323 char_u *res; | |
| 324 char_u *p; | |
| 325 int l, len, c; | |
| 326 char_u hexbuf[11]; | |
| 327 | |
| 328 if (has_mbyte) | |
| 329 { | |
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330 // Compute the length of the result, taking account of unprintable |
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331 // multi-byte characters. |
| 7 | 332 len = 0; |
| 333 p = s; | |
| 334 while (*p != NUL) | |
| 335 { | |
| 474 | 336 if ((l = (*mb_ptr2len)(p)) > 1) |
| 7 | 337 { |
| 338 c = (*mb_ptr2char)(p); | |
| 339 p += l; | |
| 340 if (vim_isprintc(c)) | |
| 341 len += l; | |
| 342 else | |
| 343 { | |
| 344 transchar_hex(hexbuf, c); | |
| 835 | 345 len += (int)STRLEN(hexbuf); |
| 7 | 346 } |
| 347 } | |
| 348 else | |
| 349 { | |
| 350 l = byte2cells(*p++); | |
| 351 if (l > 0) | |
| 352 len += l; | |
| 353 else | |
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354 len += 4; // illegal byte sequence |
| 7 | 355 } |
| 356 } | |
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357 res = alloc(len + 1); |
| 7 | 358 } |
| 359 else | |
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360 res = alloc(vim_strsize(s) + 1); |
| 7 | 361 if (res != NULL) |
| 362 { | |
| 363 *res = NUL; | |
| 364 p = s; | |
| 365 while (*p != NUL) | |
| 366 { | |
| 474 | 367 if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1) |
| 7 | 368 { |
| 369 c = (*mb_ptr2char)(p); | |
| 370 if (vim_isprintc(c)) | |
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371 STRNCAT(res, p, l); // append printable multi-byte char |
| 7 | 372 else |
| 373 transchar_hex(res + STRLEN(res), c); | |
| 374 p += l; | |
| 375 } | |
| 376 else | |
| 377 STRCAT(res, transchar_byte(*p++)); | |
| 378 } | |
| 379 } | |
| 380 return res; | |
| 381 } | |
| 382 | |
| 383 /* | |
| 221 | 384 * Convert the string "str[orglen]" to do ignore-case comparing. Uses the |
| 385 * current locale. | |
| 130 | 386 * When "buf" is NULL returns an allocated string (NULL for out-of-memory). |
| 387 * Otherwise puts the result in "buf[buflen]". | |
| 7 | 388 */ |
| 389 char_u * | |
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390 str_foldcase( |
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391 char_u *str, |
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392 int orglen, |
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393 char_u *buf, |
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394 int buflen) |
| 7 | 395 { |
| 396 garray_T ga; | |
| 397 int i; | |
| 130 | 398 int len = orglen; |
| 7 | 399 |
| 400 #define GA_CHAR(i) ((char_u *)ga.ga_data)[i] | |
| 401 #define GA_PTR(i) ((char_u *)ga.ga_data + i) | |
| 130 | 402 #define STR_CHAR(i) (buf == NULL ? GA_CHAR(i) : buf[i]) |
| 403 #define STR_PTR(i) (buf == NULL ? GA_PTR(i) : buf + i) | |
| 7 | 404 |
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405 // Copy "str" into "buf" or allocated memory, unmodified. |
| 130 | 406 if (buf == NULL) |
| 407 { | |
| 408 ga_init2(&ga, 1, 10); | |
| 409 if (ga_grow(&ga, len + 1) == FAIL) | |
| 410 return NULL; | |
| 411 mch_memmove(ga.ga_data, str, (size_t)len); | |
| 412 ga.ga_len = len; | |
| 413 } | |
| 414 else | |
| 415 { | |
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416 if (len >= buflen) // Ugly! |
| 130 | 417 len = buflen - 1; |
| 418 mch_memmove(buf, str, (size_t)len); | |
| 419 } | |
| 420 if (buf == NULL) | |
| 421 GA_CHAR(len) = NUL; | |
| 422 else | |
| 423 buf[len] = NUL; | |
| 7 | 424 |
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425 // Make each character lower case. |
| 7 | 426 i = 0; |
| 130 | 427 while (STR_CHAR(i) != NUL) |
| 7 | 428 { |
| 130 | 429 if (enc_utf8 || (has_mbyte && MB_BYTE2LEN(STR_CHAR(i)) > 1)) |
| 7 | 430 { |
| 431 if (enc_utf8) | |
| 432 { | |
| 1654 | 433 int c = utf_ptr2char(STR_PTR(i)); |
| 3263 | 434 int olen = utf_ptr2len(STR_PTR(i)); |
| 1654 | 435 int lc = utf_tolower(c); |
| 7 | 436 |
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437 // Only replace the character when it is not an invalid |
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438 // sequence (ASCII character or more than one byte) and |
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439 // utf_tolower() doesn't return the original character. |
| 3263 | 440 if ((c < 0x80 || olen > 1) && c != lc) |
| 7 | 441 { |
| 3263 | 442 int nlen = utf_char2len(lc); |
| 7 | 443 |
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444 // If the byte length changes need to shift the following |
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445 // characters forward or backward. |
| 3263 | 446 if (olen != nlen) |
| 7 | 447 { |
| 3263 | 448 if (nlen > olen) |
| 130 | 449 { |
| 3263 | 450 if (buf == NULL |
| 451 ? ga_grow(&ga, nlen - olen + 1) == FAIL | |
| 452 : len + nlen - olen >= buflen) | |
| 7 | 453 { |
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454 // out of memory, keep old char |
| 7 | 455 lc = c; |
| 3263 | 456 nlen = olen; |
| 7 | 457 } |
| 130 | 458 } |
| 3263 | 459 if (olen != nlen) |
| 7 | 460 { |
| 130 | 461 if (buf == NULL) |
| 462 { | |
| 3263 | 463 STRMOVE(GA_PTR(i) + nlen, GA_PTR(i) + olen); |
| 464 ga.ga_len += nlen - olen; | |
| 130 | 465 } |
| 466 else | |
| 467 { | |
| 3263 | 468 STRMOVE(buf + i + nlen, buf + i + olen); |
| 469 len += nlen - olen; | |
| 130 | 470 } |
| 7 | 471 } |
| 472 } | |
| 130 | 473 (void)utf_char2bytes(lc, STR_PTR(i)); |
| 7 | 474 } |
| 475 } | |
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476 // skip to next multi-byte char |
| 474 | 477 i += (*mb_ptr2len)(STR_PTR(i)); |
| 7 | 478 } |
| 479 else | |
| 480 { | |
| 130 | 481 if (buf == NULL) |
| 482 GA_CHAR(i) = TOLOWER_LOC(GA_CHAR(i)); | |
| 483 else | |
| 484 buf[i] = TOLOWER_LOC(buf[i]); | |
| 7 | 485 ++i; |
| 486 } | |
| 487 } | |
| 488 | |
| 130 | 489 if (buf == NULL) |
| 490 return (char_u *)ga.ga_data; | |
| 491 return buf; | |
| 7 | 492 } |
| 493 | |
| 494 /* | |
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495 * Catch 22: g_chartab[] can't be initialized before the options are |
| 7 | 496 * initialized, and initializing options may cause transchar() to be called! |
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497 * When chartab_initialized == FALSE don't use g_chartab[]. |
| 7 | 498 * Does NOT work for multi-byte characters, c must be <= 255. |
| 499 * Also doesn't work for the first byte of a multi-byte, "c" must be a | |
| 500 * character! | |
| 501 */ | |
| 502 static char_u transchar_buf[7]; | |
| 503 | |
| 504 char_u * | |
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505 transchar(int c) |
| 7 | 506 { |
| 507 int i; | |
| 508 | |
| 509 i = 0; | |
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510 if (IS_SPECIAL(c)) // special key code, display as ~@ char |
| 7 | 511 { |
| 512 transchar_buf[0] = '~'; | |
| 513 transchar_buf[1] = '@'; | |
| 514 i = 2; | |
| 515 c = K_SECOND(c); | |
| 516 } | |
| 517 | |
| 518 if ((!chartab_initialized && ( | |
| 519 #ifdef EBCDIC | |
| 520 (c >= 64 && c < 255) | |
| 521 #else | |
| 522 (c >= ' ' && c <= '~') | |
| 523 #endif | |
| 524 )) || (c < 256 && vim_isprintc_strict(c))) | |
| 525 { | |
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526 // printable character |
| 7 | 527 transchar_buf[i] = c; |
| 528 transchar_buf[i + 1] = NUL; | |
| 529 } | |
| 530 else | |
| 531 transchar_nonprint(transchar_buf + i, c); | |
| 532 return transchar_buf; | |
| 533 } | |
| 534 | |
| 535 /* | |
| 536 * Like transchar(), but called with a byte instead of a character. Checks | |
| 537 * for an illegal UTF-8 byte. | |
| 538 */ | |
| 539 char_u * | |
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540 transchar_byte(int c) |
| 7 | 541 { |
| 542 if (enc_utf8 && c >= 0x80) | |
| 543 { | |
| 544 transchar_nonprint(transchar_buf, c); | |
| 545 return transchar_buf; | |
| 546 } | |
| 547 return transchar(c); | |
| 548 } | |
| 549 | |
| 550 /* | |
| 551 * Convert non-printable character to two or more printable characters in | |
| 552 * "buf[]". "buf" needs to be able to hold five bytes. | |
| 553 * Does NOT work for multi-byte characters, c must be <= 255. | |
| 554 */ | |
| 555 void | |
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556 transchar_nonprint(char_u *buf, int c) |
| 7 | 557 { |
| 558 if (c == NL) | |
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559 c = NUL; // we use newline in place of a NUL |
| 7 | 560 else if (c == CAR && get_fileformat(curbuf) == EOL_MAC) |
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561 c = NL; // we use CR in place of NL in this case |
| 7 | 562 |
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563 if (dy_flags & DY_UHEX) // 'display' has "uhex" |
| 7 | 564 transchar_hex(buf, c); |
| 565 | |
| 566 #ifdef EBCDIC | |
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567 // For EBCDIC only the characters 0-63 and 255 are not printable |
| 7 | 568 else if (CtrlChar(c) != 0 || c == DEL) |
| 569 #else | |
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570 else if (c <= 0x7f) // 0x00 - 0x1f and 0x7f |
| 7 | 571 #endif |
| 572 { | |
| 573 buf[0] = '^'; | |
| 574 #ifdef EBCDIC | |
| 575 if (c == DEL) | |
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576 buf[1] = '?'; // DEL displayed as ^? |
| 7 | 577 else |
| 578 buf[1] = CtrlChar(c); | |
| 579 #else | |
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580 buf[1] = c ^ 0x40; // DEL displayed as ^? |
| 7 | 581 #endif |
| 582 | |
| 583 buf[2] = NUL; | |
| 584 } | |
| 585 else if (enc_utf8 && c >= 0x80) | |
| 586 { | |
| 587 transchar_hex(buf, c); | |
| 588 } | |
| 589 #ifndef EBCDIC | |
|
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590 else if (c >= ' ' + 0x80 && c <= '~' + 0x80) // 0xa0 - 0xfe |
| 7 | 591 { |
| 592 buf[0] = '|'; | |
| 593 buf[1] = c - 0x80; | |
| 594 buf[2] = NUL; | |
| 595 } | |
| 596 #else | |
| 597 else if (c < 64) | |
| 598 { | |
| 599 buf[0] = '~'; | |
| 600 buf[1] = MetaChar(c); | |
| 601 buf[2] = NUL; | |
| 602 } | |
| 603 #endif | |
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604 else // 0x80 - 0x9f and 0xff |
| 7 | 605 { |
| 606 /* | |
| 607 * TODO: EBCDIC I don't know what to do with this chars, so I display | |
| 608 * them as '~?' for now | |
| 609 */ | |
| 610 buf[0] = '~'; | |
| 611 #ifdef EBCDIC | |
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612 buf[1] = '?'; // 0xff displayed as ~? |
| 7 | 613 #else |
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614 buf[1] = (c - 0x80) ^ 0x40; // 0xff displayed as ~? |
| 7 | 615 #endif |
| 616 buf[2] = NUL; | |
| 617 } | |
| 618 } | |
| 619 | |
| 620 void | |
|
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621 transchar_hex(char_u *buf, int c) |
| 7 | 622 { |
| 623 int i = 0; | |
| 624 | |
| 625 buf[0] = '<'; | |
| 626 if (c > 255) | |
| 627 { | |
| 628 buf[++i] = nr2hex((unsigned)c >> 12); | |
| 629 buf[++i] = nr2hex((unsigned)c >> 8); | |
| 630 } | |
| 631 buf[++i] = nr2hex((unsigned)c >> 4); | |
| 1869 | 632 buf[++i] = nr2hex((unsigned)c); |
| 7 | 633 buf[++i] = '>'; |
| 634 buf[++i] = NUL; | |
| 635 } | |
| 636 | |
| 637 /* | |
| 638 * Convert the lower 4 bits of byte "c" to its hex character. | |
| 639 * Lower case letters are used to avoid the confusion of <F1> being 0xf1 or | |
| 640 * function key 1. | |
| 641 */ | |
| 1869 | 642 static unsigned |
|
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643 nr2hex(unsigned c) |
| 7 | 644 { |
| 645 if ((c & 0xf) <= 9) | |
| 646 return (c & 0xf) + '0'; | |
| 647 return (c & 0xf) - 10 + 'a'; | |
| 648 } | |
| 649 | |
| 650 /* | |
| 651 * Return number of display cells occupied by byte "b". | |
| 652 * Caller must make sure 0 <= b <= 255. | |
| 653 * For multi-byte mode "b" must be the first byte of a character. | |
| 654 * A TAB is counted as two cells: "^I". | |
| 655 * For UTF-8 mode this will return 0 for bytes >= 0x80, because the number of | |
| 656 * cells depends on further bytes. | |
| 657 */ | |
| 658 int | |
|
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659 byte2cells(int b) |
| 7 | 660 { |
| 661 if (enc_utf8 && b >= 0x80) | |
| 662 return 0; | |
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663 return (g_chartab[b] & CT_CELL_MASK); |
| 7 | 664 } |
| 665 | |
| 666 /* | |
| 667 * Return number of display cells occupied by character "c". | |
| 668 * "c" can be a special key (negative number) in which case 3 or 4 is returned. | |
| 669 * A TAB is counted as two cells: "^I" or four: "<09>". | |
| 670 */ | |
| 671 int | |
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672 char2cells(int c) |
| 7 | 673 { |
| 674 if (IS_SPECIAL(c)) | |
| 675 return char2cells(K_SECOND(c)) + 2; | |
| 676 if (c >= 0x80) | |
| 677 { | |
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678 // UTF-8: above 0x80 need to check the value |
| 7 | 679 if (enc_utf8) |
| 680 return utf_char2cells(c); | |
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681 // DBCS: double-byte means double-width, except for euc-jp with first |
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682 // byte 0x8e |
| 7 | 683 if (enc_dbcs != 0 && c >= 0x100) |
| 684 { | |
| 685 if (enc_dbcs == DBCS_JPNU && ((unsigned)c >> 8) == 0x8e) | |
| 686 return 1; | |
| 687 return 2; | |
| 688 } | |
| 689 } | |
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690 return (g_chartab[c & 0xff] & CT_CELL_MASK); |
| 7 | 691 } |
| 692 | |
| 693 /* | |
| 694 * Return number of display cells occupied by character at "*p". | |
| 695 * A TAB is counted as two cells: "^I" or four: "<09>". | |
| 696 */ | |
| 697 int | |
|
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698 ptr2cells(char_u *p) |
| 7 | 699 { |
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700 // For UTF-8 we need to look at more bytes if the first byte is >= 0x80. |
| 7 | 701 if (enc_utf8 && *p >= 0x80) |
| 702 return utf_ptr2cells(p); | |
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703 // For DBCS we can tell the cell count from the first byte. |
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704 return (g_chartab[*p] & CT_CELL_MASK); |
| 7 | 705 } |
| 706 | |
| 707 /* | |
| 3292 | 708 * Return the number of character cells string "s" will take on the screen, |
| 7 | 709 * counting TABs as two characters: "^I". |
| 710 */ | |
| 711 int | |
|
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712 vim_strsize(char_u *s) |
| 7 | 713 { |
| 714 return vim_strnsize(s, (int)MAXCOL); | |
| 715 } | |
| 716 | |
| 717 /* | |
| 3292 | 718 * Return the number of character cells string "s[len]" will take on the |
| 719 * screen, counting TABs as two characters: "^I". | |
| 7 | 720 */ |
| 721 int | |
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722 vim_strnsize(char_u *s, int len) |
| 7 | 723 { |
| 724 int size = 0; | |
| 725 | |
| 726 while (*s != NUL && --len >= 0) | |
| 727 if (has_mbyte) | |
| 728 { | |
| 474 | 729 int l = (*mb_ptr2len)(s); |
| 7 | 730 |
| 731 size += ptr2cells(s); | |
| 732 s += l; | |
| 733 len -= l - 1; | |
| 734 } | |
| 735 else | |
| 736 size += byte2cells(*s++); | |
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737 |
| 7 | 738 return size; |
| 739 } | |
| 740 | |
| 741 /* | |
| 742 * Return the number of characters 'c' will take on the screen, taking | |
| 743 * into account the size of a tab. | |
| 744 * Use a define to make it fast, this is used very often!!! | |
| 745 * Also see getvcol() below. | |
| 746 */ | |
| 747 | |
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748 #ifdef FEAT_VARTABS |
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749 # define RET_WIN_BUF_CHARTABSIZE(wp, buf, p, col) \ |
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750 if (*(p) == TAB && (!(wp)->w_p_list || lcs_tab1)) \ |
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751 { \ |
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752 return tabstop_padding(col, (buf)->b_p_ts, (buf)->b_p_vts_array); \ |
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753 } \ |
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754 else \ |
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755 return ptr2cells(p); |
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756 #else |
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757 # define RET_WIN_BUF_CHARTABSIZE(wp, buf, p, col) \ |
| 7 | 758 if (*(p) == TAB && (!(wp)->w_p_list || lcs_tab1)) \ |
| 759 { \ | |
| 760 int ts; \ | |
| 761 ts = (buf)->b_p_ts; \ | |
| 762 return (int)(ts - (col % ts)); \ | |
| 763 } \ | |
| 764 else \ | |
| 765 return ptr2cells(p); | |
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766 #endif |
| 7 | 767 |
| 768 int | |
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769 chartabsize(char_u *p, colnr_T col) |
| 7 | 770 { |
| 771 RET_WIN_BUF_CHARTABSIZE(curwin, curbuf, p, col) | |
| 772 } | |
| 773 | |
| 774 #ifdef FEAT_LINEBREAK | |
| 775 static int | |
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776 win_chartabsize(win_T *wp, char_u *p, colnr_T col) |
| 7 | 777 { |
| 778 RET_WIN_BUF_CHARTABSIZE(wp, wp->w_buffer, p, col) | |
| 779 } | |
| 780 #endif | |
| 781 | |
| 782 /* | |
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783 * Return the number of characters the string 's' will take on the screen, |
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784 * taking into account the size of a tab. |
| 7 | 785 */ |
| 786 int | |
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787 linetabsize(char_u *s) |
| 7 | 788 { |
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789 return linetabsize_col(0, s); |
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790 } |
|
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791 |
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792 /* |
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793 * Like linetabsize(), but starting at column "startcol". |
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794 */ |
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795 int |
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796 linetabsize_col(int startcol, char_u *s) |
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797 { |
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798 colnr_T col = startcol; |
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799 char_u *line = s; // pointer to start of line, for breakindent |
| 7 | 800 |
| 801 while (*s != NUL) | |
| 5995 | 802 col += lbr_chartabsize_adv(line, &s, col); |
| 7 | 803 return (int)col; |
| 804 } | |
| 805 | |
| 806 /* | |
| 807 * Like linetabsize(), but for a given window instead of the current one. | |
| 808 */ | |
| 809 int | |
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810 win_linetabsize(win_T *wp, char_u *line, colnr_T len) |
| 7 | 811 { |
| 812 colnr_T col = 0; | |
| 813 char_u *s; | |
| 814 | |
| 5995 | 815 for (s = line; *s != NUL && (len == MAXCOL || s < line + len); |
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816 MB_PTR_ADV(s)) |
| 5995 | 817 col += win_lbr_chartabsize(wp, line, s, col, NULL); |
| 7 | 818 return (int)col; |
| 819 } | |
| 820 | |
| 821 /* | |
| 42 | 822 * Return TRUE if 'c' is a normal identifier character: |
| 823 * Letters and characters from the 'isident' option. | |
| 7 | 824 */ |
| 825 int | |
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826 vim_isIDc(int c) |
| 7 | 827 { |
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828 return (c > 0 && c < 0x100 && (g_chartab[c] & CT_ID_CHAR)); |
| 7 | 829 } |
| 830 | |
| 831 /* | |
| 832 * return TRUE if 'c' is a keyword character: Letters and characters from | |
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833 * 'iskeyword' option for the current buffer. |
| 7 | 834 * For multi-byte characters mb_get_class() is used (builtin rules). |
| 835 */ | |
| 836 int | |
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837 vim_iswordc(int c) |
| 7 | 838 { |
| 4043 | 839 return vim_iswordc_buf(c, curbuf); |
| 840 } | |
| 841 | |
| 842 int | |
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843 vim_iswordc_buf(int c, buf_T *buf) |
| 4043 | 844 { |
| 7 | 845 if (c >= 0x100) |
| 846 { | |
| 847 if (enc_dbcs != 0) | |
| 1869 | 848 return dbcs_class((unsigned)c >> 8, (unsigned)(c & 0xff)) >= 2; |
| 7 | 849 if (enc_utf8) |
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850 return utf_class_buf(c, buf) >= 2; |
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851 return FALSE; |
| 7 | 852 } |
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853 return (c > 0 && GET_CHARTAB(buf, c) != 0); |
| 7 | 854 } |
| 855 | |
| 856 /* | |
| 857 * Just like vim_iswordc() but uses a pointer to the (multi-byte) character. | |
| 858 */ | |
| 859 int | |
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860 vim_iswordp(char_u *p) |
| 7 | 861 { |
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862 return vim_iswordp_buf(p, curbuf); |
| 7 | 863 } |
| 864 | |
| 865 int | |
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866 vim_iswordp_buf(char_u *p, buf_T *buf) |
| 7 | 867 { |
|
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868 int c = *p; |
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869 |
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870 if (has_mbyte && MB_BYTE2LEN(c) > 1) |
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871 c = (*mb_ptr2char)(p); |
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872 return vim_iswordc_buf(c, buf); |
| 7 | 873 } |
| 874 | |
| 875 /* | |
| 876 * return TRUE if 'c' is a valid file-name character | |
| 877 * Assume characters above 0x100 are valid (multi-byte). | |
| 878 */ | |
| 879 int | |
|
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880 vim_isfilec(int c) |
| 7 | 881 { |
|
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882 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_FNAME_CHAR))); |
| 7 | 883 } |
| 884 | |
| 885 /* | |
| 1369 | 886 * return TRUE if 'c' is a valid file-name character or a wildcard character |
| 887 * Assume characters above 0x100 are valid (multi-byte). | |
| 888 * Explicitly interpret ']' as a wildcard character as mch_has_wildcard("]") | |
| 889 * returns false. | |
| 890 */ | |
| 891 int | |
|
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892 vim_isfilec_or_wc(int c) |
| 1369 | 893 { |
| 894 char_u buf[2]; | |
| 895 | |
| 896 buf[0] = (char_u)c; | |
| 897 buf[1] = NUL; | |
| 898 return vim_isfilec(c) || c == ']' || mch_has_wildcard(buf); | |
| 899 } | |
| 900 | |
| 901 /* | |
|
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902 * Return TRUE if 'c' is a printable character. |
| 7 | 903 * Assume characters above 0x100 are printable (multi-byte), except for |
| 904 * Unicode. | |
| 905 */ | |
| 906 int | |
|
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907 vim_isprintc(int c) |
| 7 | 908 { |
| 909 if (enc_utf8 && c >= 0x100) | |
| 910 return utf_printable(c); | |
|
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911 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_PRINT_CHAR))); |
| 7 | 912 } |
| 913 | |
| 914 /* | |
| 915 * Strict version of vim_isprintc(c), don't return TRUE if "c" is the head | |
| 916 * byte of a double-byte character. | |
| 917 */ | |
| 918 int | |
|
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919 vim_isprintc_strict(int c) |
| 7 | 920 { |
| 921 if (enc_dbcs != 0 && c < 0x100 && MB_BYTE2LEN(c) > 1) | |
| 922 return FALSE; | |
| 923 if (enc_utf8 && c >= 0x100) | |
| 924 return utf_printable(c); | |
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925 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_PRINT_CHAR))); |
| 7 | 926 } |
| 927 | |
| 928 /* | |
| 929 * like chartabsize(), but also check for line breaks on the screen | |
| 930 */ | |
| 931 int | |
|
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932 lbr_chartabsize( |
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933 char_u *line UNUSED, // start of the line |
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934 unsigned char *s, |
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935 colnr_T col) |
| 7 | 936 { |
| 937 #ifdef FEAT_LINEBREAK | |
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938 if (!curwin->w_p_lbr && *get_showbreak_value(curwin) == NUL |
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939 && !curwin->w_p_bri) |
| 7 | 940 { |
| 941 #endif | |
| 942 if (curwin->w_p_wrap) | |
| 943 return win_nolbr_chartabsize(curwin, s, col, NULL); | |
| 944 RET_WIN_BUF_CHARTABSIZE(curwin, curbuf, s, col) | |
| 945 #ifdef FEAT_LINEBREAK | |
| 946 } | |
| 5995 | 947 return win_lbr_chartabsize(curwin, line == NULL ? s : line, s, col, NULL); |
| 7 | 948 #endif |
| 949 } | |
| 950 | |
| 951 /* | |
| 952 * Call lbr_chartabsize() and advance the pointer. | |
| 953 */ | |
| 954 int | |
|
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955 lbr_chartabsize_adv( |
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956 char_u *line, // start of the line |
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957 char_u **s, |
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958 colnr_T col) |
| 7 | 959 { |
| 960 int retval; | |
| 961 | |
| 5995 | 962 retval = lbr_chartabsize(line, *s, col); |
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963 MB_PTR_ADV(*s); |
| 7 | 964 return retval; |
| 965 } | |
| 966 | |
| 967 /* | |
| 968 * This function is used very often, keep it fast!!!! | |
| 969 * | |
| 970 * If "headp" not NULL, set *headp to the size of what we for 'showbreak' | |
| 971 * string at start of line. Warning: *headp is only set if it's a non-zero | |
| 972 * value, init to 0 before calling. | |
| 973 */ | |
| 974 int | |
|
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975 win_lbr_chartabsize( |
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976 win_T *wp, |
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977 char_u *line UNUSED, // start of the line |
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978 char_u *s, |
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979 colnr_T col, |
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980 int *headp UNUSED) |
| 7 | 981 { |
| 982 #ifdef FEAT_LINEBREAK | |
| 983 int c; | |
| 984 int size; | |
| 985 colnr_T col2; | |
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986 colnr_T col_adj = 0; // col + screen size of tab |
| 7 | 987 colnr_T colmax; |
| 988 int added; | |
| 989 int mb_added = 0; | |
| 990 int numberextra; | |
| 991 char_u *ps; | |
| 992 int tab_corr = (*s == TAB); | |
| 236 | 993 int n; |
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994 char_u *sbr; |
| 7 | 995 |
| 996 /* | |
| 5995 | 997 * No 'linebreak', 'showbreak' and 'breakindent': return quickly. |
| 7 | 998 */ |
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999 if (!wp->w_p_lbr && !wp->w_p_bri && *get_showbreak_value(wp) == NUL) |
| 7 | 1000 #endif |
| 1001 { | |
| 1002 if (wp->w_p_wrap) | |
| 1003 return win_nolbr_chartabsize(wp, s, col, headp); | |
| 1004 RET_WIN_BUF_CHARTABSIZE(wp, wp->w_buffer, s, col) | |
| 1005 } | |
| 1006 | |
| 1007 #ifdef FEAT_LINEBREAK | |
| 1008 /* | |
| 1009 * First get normal size, without 'linebreak' | |
| 1010 */ | |
| 1011 size = win_chartabsize(wp, s, col); | |
| 1012 c = *s; | |
| 6024 | 1013 if (tab_corr) |
| 1014 col_adj = size - 1; | |
| 7 | 1015 |
| 1016 /* | |
| 1017 * If 'linebreak' set check at a blank before a non-blank if the line | |
| 1018 * needs a break here | |
| 1019 */ | |
| 1020 if (wp->w_p_lbr | |
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1021 && VIM_ISBREAK(c) |
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1022 && !VIM_ISBREAK((int)s[1]) |
| 7 | 1023 && wp->w_p_wrap |
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1024 && wp->w_width != 0) |
| 7 | 1025 { |
| 1026 /* | |
| 1027 * Count all characters from first non-blank after a blank up to next | |
| 1028 * non-blank after a blank. | |
| 1029 */ | |
| 1030 numberextra = win_col_off(wp); | |
| 1031 col2 = col; | |
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1032 colmax = (colnr_T)(wp->w_width - numberextra - col_adj); |
| 7 | 1033 if (col >= colmax) |
| 236 | 1034 { |
| 6024 | 1035 colmax += col_adj; |
| 1036 n = colmax + win_col_off2(wp); | |
| 236 | 1037 if (n > 0) |
| 6024 | 1038 colmax += (((col - colmax) / n) + 1) * n - col_adj; |
| 236 | 1039 } |
| 1040 | |
| 7 | 1041 for (;;) |
| 1042 { | |
| 1043 ps = s; | |
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1044 MB_PTR_ADV(s); |
| 7 | 1045 c = *s; |
| 1046 if (!(c != NUL | |
|
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1047 && (VIM_ISBREAK(c) |
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1048 || (!VIM_ISBREAK(c) |
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1049 && (col2 == col || !VIM_ISBREAK((int)*ps)))))) |
| 7 | 1050 break; |
| 1051 | |
| 1052 col2 += win_chartabsize(wp, s, col2); | |
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1053 if (col2 >= colmax) // doesn't fit |
| 7 | 1054 { |
| 6024 | 1055 size = colmax - col + col_adj; |
| 7 | 1056 break; |
| 1057 } | |
| 1058 } | |
| 1059 } | |
| 1060 else if (has_mbyte && size == 2 && MB_BYTE2LEN(*s) > 1 | |
| 1061 && wp->w_p_wrap && in_win_border(wp, col)) | |
| 1062 { | |
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1063 ++size; // Count the ">" in the last column. |
| 7 | 1064 mb_added = 1; |
| 1065 } | |
| 1066 | |
| 1067 /* | |
| 5995 | 1068 * May have to add something for 'breakindent' and/or 'showbreak' |
| 1069 * string at start of line. | |
| 7 | 1070 * Set *headp to the size of what we add. |
| 1071 */ | |
| 1072 added = 0; | |
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1073 sbr = get_showbreak_value(wp); |
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1074 if ((*sbr != NUL || wp->w_p_bri) && wp->w_p_wrap && col != 0) |
| 7 | 1075 { |
| 6503 | 1076 colnr_T sbrlen = 0; |
| 1077 int numberwidth = win_col_off(wp); | |
| 1078 | |
| 1079 numberextra = numberwidth; | |
| 7 | 1080 col += numberextra + mb_added; |
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1081 if (col >= (colnr_T)wp->w_width) |
| 7 | 1082 { |
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1083 col -= wp->w_width; |
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1084 numberextra = wp->w_width - (numberextra - win_col_off2(wp)); |
| 6503 | 1085 if (col >= numberextra && numberextra > 0) |
| 6312 | 1086 col %= numberextra; |
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1087 if (*sbr != NUL) |
| 6288 | 1088 { |
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1089 sbrlen = (colnr_T)MB_CHARLEN(sbr); |
| 6288 | 1090 if (col >= sbrlen) |
| 1091 col -= sbrlen; | |
| 1092 } | |
| 6503 | 1093 if (col >= numberextra && numberextra > 0) |
| 7 | 1094 col = col % numberextra; |
| 6503 | 1095 else if (col > 0 && numberextra > 0) |
| 1096 col += numberwidth - win_col_off2(wp); | |
| 1097 | |
| 1098 numberwidth -= win_col_off2(wp); | |
| 7 | 1099 } |
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1100 if (col == 0 || col + size + sbrlen > (colnr_T)wp->w_width) |
| 7 | 1101 { |
| 5995 | 1102 added = 0; |
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1103 if (*sbr != NUL) |
| 6503 | 1104 { |
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1105 if (size + sbrlen + numberwidth > (colnr_T)wp->w_width) |
| 6503 | 1106 { |
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1107 // calculate effective window width |
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1108 int width = (colnr_T)wp->w_width - sbrlen - numberwidth; |
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1109 int prev_width = col |
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1110 ? ((colnr_T)wp->w_width - (sbrlen + col)) : 0; |
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1111 |
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1112 if (width <= 0) |
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1113 width = (colnr_T)1; |
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1114 added += ((size - prev_width) / width) * vim_strsize(sbr); |
| 6503 | 1115 if ((size - prev_width) % width) |
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patch 8.1.1411: Coverity warns for divide by zero
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changeset
|
1116 // wrapped, add another length of 'sbr' |
|
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patch 8.1.2281: 'showbreak' cannot be set for one window
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|
1117 added += vim_strsize(sbr); |
| 6503 | 1118 } |
| 1119 else | |
|
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|
1120 added += vim_strsize(sbr); |
| 6503 | 1121 } |
| 5995 | 1122 if (wp->w_p_bri) |
| 1123 added += get_breakindent_win(wp, line); | |
| 1124 | |
| 6160 | 1125 size += added; |
| 7 | 1126 if (col != 0) |
| 1127 added = 0; | |
| 1128 } | |
| 1129 } | |
| 1130 if (headp != NULL) | |
| 1131 *headp = added + mb_added; | |
| 1132 return size; | |
| 1133 #endif | |
| 1134 } | |
| 1135 | |
| 1136 /* | |
| 1137 * Like win_lbr_chartabsize(), except that we know 'linebreak' is off and | |
| 1138 * 'wrap' is on. This means we need to check for a double-byte character that | |
| 1139 * doesn't fit at the end of the screen line. | |
| 1140 */ | |
| 1141 static int | |
|
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|
1142 win_nolbr_chartabsize( |
|
83861277e6a3
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|
1143 win_T *wp, |
|
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|
1144 char_u *s, |
|
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|
1145 colnr_T col, |
|
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|
1146 int *headp) |
| 7 | 1147 { |
| 1148 int n; | |
| 1149 | |
| 1150 if (*s == TAB && (!wp->w_p_list || lcs_tab1)) | |
| 1151 { | |
|
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|
1152 # ifdef FEAT_VARTABS |
|
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|
1153 return tabstop_padding(col, wp->w_buffer->b_p_ts, |
|
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|
1154 wp->w_buffer->b_p_vts_array); |
|
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|
1155 # else |
| 7 | 1156 n = wp->w_buffer->b_p_ts; |
| 1157 return (int)(n - (col % n)); | |
|
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|
1158 # endif |
| 7 | 1159 } |
| 1160 n = ptr2cells(s); | |
|
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|
1161 // Add one cell for a double-width character in the last column of the |
|
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|
1162 // window, displayed with a ">". |
| 7 | 1163 if (n == 2 && MB_BYTE2LEN(*s) > 1 && in_win_border(wp, col)) |
| 1164 { | |
| 1165 if (headp != NULL) | |
| 1166 *headp = 1; | |
| 1167 return 3; | |
| 1168 } | |
| 1169 return n; | |
| 1170 } | |
| 1171 | |
| 1172 /* | |
| 1173 * Return TRUE if virtual column "vcol" is in the rightmost column of window | |
| 1174 * "wp". | |
| 1175 */ | |
|
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|
1176 static int |
|
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|
1177 in_win_border(win_T *wp, colnr_T vcol) |
| 7 | 1178 { |
|
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|
1179 int width1; // width of first line (after line number) |
|
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|
1180 int width2; // width of further lines |
| 7 | 1181 |
|
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|
1182 if (wp->w_width == 0) // there is no border |
| 7 | 1183 return FALSE; |
|
12515
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patch 8.0.1136: W_WIDTH() is always the same
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parents:
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diff
changeset
|
1184 width1 = wp->w_width - win_col_off(wp); |
| 1869 | 1185 if ((int)vcol < width1 - 1) |
| 7 | 1186 return FALSE; |
| 1869 | 1187 if ((int)vcol == width1 - 1) |
| 7 | 1188 return TRUE; |
| 1189 width2 = width1 + win_col_off2(wp); | |
| 1970 | 1190 if (width2 <= 0) |
| 1191 return FALSE; | |
| 7 | 1192 return ((vcol - width1) % width2 == width2 - 1); |
| 1193 } | |
| 1194 | |
| 1195 /* | |
| 1196 * Get virtual column number of pos. | |
| 1197 * start: on the first position of this character (TAB, ctrl) | |
| 1198 * cursor: where the cursor is on this character (first char, except for TAB) | |
| 1199 * end: on the last position of this character (TAB, ctrl) | |
| 1200 * | |
| 1201 * This is used very often, keep it fast! | |
| 1202 */ | |
| 1203 void | |
|
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|
1204 getvcol( |
|
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|
1205 win_T *wp, |
|
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|
1206 pos_T *pos, |
|
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|
1207 colnr_T *start, |
|
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diff
changeset
|
1208 colnr_T *cursor, |
|
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|
1209 colnr_T *end) |
| 7 | 1210 { |
| 1211 colnr_T vcol; | |
|
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1212 char_u *ptr; // points to current char |
|
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|
1213 char_u *posptr; // points to char at pos->col |
|
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|
1214 char_u *line; // start of the line |
| 7 | 1215 int incr; |
| 1216 int head; | |
|
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|
1217 #ifdef FEAT_VARTABS |
|
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1218 int *vts = wp->w_buffer->b_p_vts_array; |
|
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|
1219 #endif |
| 7 | 1220 int ts = wp->w_buffer->b_p_ts; |
| 1221 int c; | |
| 1222 | |
| 1223 vcol = 0; | |
| 5995 | 1224 line = ptr = ml_get_buf(wp->w_buffer, pos->lnum, FALSE); |
|
2108
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diff
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|
1225 if (pos->col == MAXCOL) |
|
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|
1226 posptr = NULL; // continue until the NUL |
|
2108
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|
1227 else |
|
10720
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diff
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|
1228 { |
|
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|
1229 // Special check for an empty line, which can happen on exit, when |
|
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changeset
|
1230 // ml_get_buf() always returns an empty string. |
|
10835
c9da7f9137af
patch 8.0.0307: asan detects a memory error when EXITFREE is defined
Christian Brabandt <cb@256bit.org>
parents:
10724
diff
changeset
|
1231 if (*ptr == NUL) |
|
c9da7f9137af
patch 8.0.0307: asan detects a memory error when EXITFREE is defined
Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1232 pos->col = 0; |
|
2108
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Bram Moolenaar <bram@zimbu.org>
parents:
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diff
changeset
|
1233 posptr = ptr + pos->col; |
|
10720
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patch 8.0.0250: virtcol() does not work well for multi-byte characters
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parents:
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diff
changeset
|
1234 if (has_mbyte) |
|
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|
1235 // always start on the first byte |
|
10720
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Christian Brabandt <cb@256bit.org>
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changeset
|
1236 posptr -= (*mb_head_off)(line, posptr); |
|
44a1661f4cfa
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diff
changeset
|
1237 } |
| 7 | 1238 |
| 1239 /* | |
| 1240 * This function is used very often, do some speed optimizations. | |
| 5995 | 1241 * When 'list', 'linebreak', 'showbreak' and 'breakindent' are not set |
| 1242 * use a simple loop. | |
| 7 | 1243 * Also use this when 'list' is set but tabs take their normal size. |
| 1244 */ | |
| 1245 if ((!wp->w_p_list || lcs_tab1 != NUL) | |
| 1246 #ifdef FEAT_LINEBREAK | |
|
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diff
changeset
|
1247 && !wp->w_p_lbr && *get_showbreak_value(wp) == NUL && !wp->w_p_bri |
| 7 | 1248 #endif |
| 1249 ) | |
| 1250 { | |
| 1251 for (;;) | |
| 1252 { | |
| 1253 head = 0; | |
| 1254 c = *ptr; | |
|
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|
1255 // make sure we don't go past the end of the line |
| 7 | 1256 if (c == NUL) |
| 1257 { | |
|
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|
1258 incr = 1; // NUL at end of line only takes one column |
| 7 | 1259 break; |
| 1260 } | |
|
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|
1261 // A tab gets expanded, depending on the current column |
| 7 | 1262 if (c == TAB) |
|
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changeset
|
1263 #ifdef FEAT_VARTABS |
|
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parents:
14061
diff
changeset
|
1264 incr = tabstop_padding(vcol, ts, vts); |
|
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changeset
|
1265 #else |
| 7 | 1266 incr = ts - (vcol % ts); |
|
14175
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|
1267 #endif |
| 7 | 1268 else |
| 1269 { | |
| 1270 if (has_mbyte) | |
| 1271 { | |
|
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|
1272 // For utf-8, if the byte is >= 0x80, need to look at |
|
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18574
diff
changeset
|
1273 // further bytes to find the cell width. |
| 7 | 1274 if (enc_utf8 && c >= 0x80) |
| 1275 incr = utf_ptr2cells(ptr); | |
| 1276 else | |
|
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changeset
|
1277 incr = g_chartab[c] & CT_CELL_MASK; |
| 7 | 1278 |
|
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|
1279 // If a double-cell char doesn't fit at the end of a line |
|
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changeset
|
1280 // it wraps to the next line, it's like this char is three |
|
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diff
changeset
|
1281 // cells wide. |
| 1546 | 1282 if (incr == 2 && wp->w_p_wrap && MB_BYTE2LEN(*ptr) > 1 |
| 1283 && in_win_border(wp, vcol)) | |
| 7 | 1284 { |
| 1285 ++incr; | |
| 1286 head = 1; | |
| 1287 } | |
| 1288 } | |
| 1289 else | |
|
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changeset
|
1290 incr = g_chartab[c] & CT_CELL_MASK; |
| 7 | 1291 } |
| 1292 | |
|
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|
1293 if (posptr != NULL && ptr >= posptr) // character at pos->col |
| 7 | 1294 break; |
| 1295 | |
| 1296 vcol += incr; | |
|
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changeset
|
1297 MB_PTR_ADV(ptr); |
| 7 | 1298 } |
| 1299 } | |
| 1300 else | |
| 1301 { | |
| 1302 for (;;) | |
| 1303 { | |
|
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|
1304 // A tab gets expanded, depending on the current column |
| 7 | 1305 head = 0; |
| 5995 | 1306 incr = win_lbr_chartabsize(wp, line, ptr, vcol, &head); |
|
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|
1307 // make sure we don't go past the end of the line |
| 7 | 1308 if (*ptr == NUL) |
| 1309 { | |
|
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|
1310 incr = 1; // NUL at end of line only takes one column |
| 7 | 1311 break; |
| 1312 } | |
| 1313 | |
|
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changeset
|
1314 if (posptr != NULL && ptr >= posptr) // character at pos->col |
| 7 | 1315 break; |
| 1316 | |
| 1317 vcol += incr; | |
|
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changeset
|
1318 MB_PTR_ADV(ptr); |
| 7 | 1319 } |
| 1320 } | |
| 1321 if (start != NULL) | |
| 1322 *start = vcol + head; | |
| 1323 if (end != NULL) | |
| 1324 *end = vcol + incr - 1; | |
| 1325 if (cursor != NULL) | |
| 1326 { | |
| 1327 if (*ptr == TAB | |
| 1328 && (State & NORMAL) | |
| 1329 && !wp->w_p_list | |
| 1330 && !virtual_active() | |
|
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changeset
|
1331 && !(VIsual_active |
|
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changeset
|
1332 && (*p_sel == 'e' || LTOREQ_POS(*pos, VIsual))) |
| 7 | 1333 ) |
|
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changeset
|
1334 *cursor = vcol + incr - 1; // cursor at end |
| 7 | 1335 else |
|
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changeset
|
1336 *cursor = vcol + head; // cursor at start |
| 7 | 1337 } |
| 1338 } | |
| 1339 | |
| 1340 /* | |
| 1341 * Get virtual cursor column in the current window, pretending 'list' is off. | |
| 1342 */ | |
| 1343 colnr_T | |
|
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changeset
|
1344 getvcol_nolist(pos_T *posp) |
| 7 | 1345 { |
| 1346 int list_save = curwin->w_p_list; | |
| 1347 colnr_T vcol; | |
| 1348 | |
| 1349 curwin->w_p_list = FALSE; | |
|
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1350 if (posp->coladd) |
|
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1351 getvvcol(curwin, posp, NULL, &vcol, NULL); |
|
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1352 else |
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|
1353 getvcol(curwin, posp, NULL, &vcol, NULL); |
| 7 | 1354 curwin->w_p_list = list_save; |
| 1355 return vcol; | |
| 1356 } | |
| 1357 | |
| 1358 /* | |
| 1359 * Get virtual column in virtual mode. | |
| 1360 */ | |
| 1361 void | |
|
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1362 getvvcol( |
|
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1363 win_T *wp, |
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1364 pos_T *pos, |
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|
1365 colnr_T *start, |
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1366 colnr_T *cursor, |
|
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|
1367 colnr_T *end) |
| 7 | 1368 { |
| 1369 colnr_T col; | |
| 1370 colnr_T coladd; | |
| 1371 colnr_T endadd; | |
| 1372 char_u *ptr; | |
| 1373 | |
| 1374 if (virtual_active()) | |
| 1375 { | |
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|
1376 // For virtual mode, only want one value |
| 7 | 1377 getvcol(wp, pos, &col, NULL, NULL); |
| 1378 | |
| 1379 coladd = pos->coladd; | |
| 1380 endadd = 0; | |
|
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|
1381 // Cannot put the cursor on part of a wide character. |
| 7 | 1382 ptr = ml_get_buf(wp->w_buffer, pos->lnum, FALSE); |
| 1869 | 1383 if (pos->col < (colnr_T)STRLEN(ptr)) |
| 7 | 1384 { |
| 1385 int c = (*mb_ptr2char)(ptr + pos->col); | |
| 1386 | |
| 1387 if (c != TAB && vim_isprintc(c)) | |
| 1388 { | |
| 1869 | 1389 endadd = (colnr_T)(char2cells(c) - 1); |
|
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|
1390 if (coladd > endadd) // past end of line |
| 557 | 1391 endadd = 0; |
| 7 | 1392 else |
| 1393 coladd = 0; | |
| 1394 } | |
| 1395 } | |
| 1396 col += coladd; | |
| 1397 if (start != NULL) | |
| 1398 *start = col; | |
| 1399 if (cursor != NULL) | |
| 1400 *cursor = col; | |
| 1401 if (end != NULL) | |
| 1402 *end = col + endadd; | |
| 1403 } | |
| 1404 else | |
| 1405 getvcol(wp, pos, start, cursor, end); | |
| 1406 } | |
| 1407 | |
| 1408 /* | |
| 1409 * Get the leftmost and rightmost virtual column of pos1 and pos2. | |
| 1410 * Used for Visual block mode. | |
| 1411 */ | |
| 1412 void | |
|
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1413 getvcols( |
|
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|
1414 win_T *wp, |
|
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|
1415 pos_T *pos1, |
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|
1416 pos_T *pos2, |
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|
1417 colnr_T *left, |
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|
1418 colnr_T *right) |
| 7 | 1419 { |
| 1420 colnr_T from1, from2, to1, to2; | |
| 1421 | |
|
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|
1422 if (LT_POSP(pos1, pos2)) |
| 7 | 1423 { |
| 1424 getvvcol(wp, pos1, &from1, NULL, &to1); | |
| 1425 getvvcol(wp, pos2, &from2, NULL, &to2); | |
| 1426 } | |
| 1427 else | |
| 1428 { | |
| 1429 getvvcol(wp, pos2, &from1, NULL, &to1); | |
| 1430 getvvcol(wp, pos1, &from2, NULL, &to2); | |
| 1431 } | |
| 1432 if (from2 < from1) | |
| 1433 *left = from2; | |
| 1434 else | |
| 1435 *left = from1; | |
| 1436 if (to2 > to1) | |
| 1437 { | |
| 1438 if (*p_sel == 'e' && from2 - 1 >= to1) | |
| 1439 *right = from2 - 1; | |
| 1440 else | |
| 1441 *right = to2; | |
| 1442 } | |
| 1443 else | |
| 1444 *right = to1; | |
| 1445 } | |
| 1446 | |
| 1447 /* | |
| 1448 * skipwhite: skip over ' ' and '\t'. | |
| 1449 */ | |
| 1450 char_u * | |
|
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1451 skipwhite(char_u *q) |
| 7 | 1452 { |
| 1687 | 1453 char_u *p = q; |
| 1454 | |
|
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1455 while (VIM_ISWHITE(*p)) // skip to next non-white |
| 7 | 1456 ++p; |
| 1457 return p; | |
| 1458 } | |
| 1459 | |
| 1460 /* | |
|
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1461 * getwhitecols: return the number of whitespace |
|
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1462 * columns (bytes) at the start of a given line |
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1463 */ |
|
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1464 int |
|
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1465 getwhitecols_curline() |
|
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1466 { |
|
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1467 return getwhitecols(ml_get_curline()); |
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1468 } |
|
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1469 |
|
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1470 int |
|
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|
1471 getwhitecols(char_u *p) |
|
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1472 { |
|
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1473 return skipwhite(p) - p; |
|
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1474 } |
|
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1475 |
|
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1476 /* |
| 293 | 1477 * skip over digits |
| 7 | 1478 */ |
| 1479 char_u * | |
|
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1480 skipdigits(char_u *q) |
| 7 | 1481 { |
| 1687 | 1482 char_u *p = q; |
| 1483 | |
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1484 while (VIM_ISDIGIT(*p)) // skip to next non-digit |
| 7 | 1485 ++p; |
| 1486 return p; | |
| 1487 } | |
| 1488 | |
| 741 | 1489 #if defined(FEAT_SYN_HL) || defined(FEAT_SPELL) || defined(PROTO) |
| 301 | 1490 /* |
|
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1491 * skip over binary digits |
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1492 */ |
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|
1493 char_u * |
|
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|
1494 skipbin(char_u *q) |
|
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1495 { |
|
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1496 char_u *p = q; |
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1497 |
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1498 while (vim_isbdigit(*p)) // skip to next non-digit |
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1499 ++p; |
|
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1500 return p; |
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1501 } |
|
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1502 |
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1503 /* |
| 301 | 1504 * skip over digits and hex characters |
| 1505 */ | |
| 1506 char_u * | |
|
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1507 skiphex(char_u *q) |
| 301 | 1508 { |
| 1687 | 1509 char_u *p = q; |
| 1510 | |
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1511 while (vim_isxdigit(*p)) // skip to next non-digit |
| 301 | 1512 ++p; |
| 1513 return p; | |
| 1514 } | |
| 1515 #endif | |
| 1516 | |
| 293 | 1517 /* |
|
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1518 * skip to bin digit (or NUL after the string) |
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1519 */ |
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1520 char_u * |
|
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1521 skiptobin(char_u *q) |
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1522 { |
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1523 char_u *p = q; |
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1524 |
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1525 while (*p != NUL && !vim_isbdigit(*p)) // skip to next digit |
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1526 ++p; |
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1527 return p; |
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1528 } |
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1529 |
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1530 /* |
| 293 | 1531 * skip to digit (or NUL after the string) |
| 1532 */ | |
| 1533 char_u * | |
|
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1534 skiptodigit(char_u *q) |
| 293 | 1535 { |
| 1687 | 1536 char_u *p = q; |
| 1537 | |
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1538 while (*p != NUL && !VIM_ISDIGIT(*p)) // skip to next digit |
| 293 | 1539 ++p; |
| 1540 return p; | |
| 1541 } | |
| 1542 | |
| 1543 /* | |
| 1544 * skip to hex character (or NUL after the string) | |
| 1545 */ | |
| 1546 char_u * | |
|
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1547 skiptohex(char_u *q) |
| 293 | 1548 { |
| 1687 | 1549 char_u *p = q; |
| 1550 | |
|
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|
1551 while (*p != NUL && !vim_isxdigit(*p)) // skip to next digit |
| 293 | 1552 ++p; |
| 1553 return p; | |
| 1554 } | |
| 1555 | |
| 7 | 1556 /* |
| 1557 * Variant of isdigit() that can handle characters > 0x100. | |
| 1558 * We don't use isdigit() here, because on some systems it also considers | |
| 1559 * superscript 1 to be a digit. | |
| 1560 * Use the VIM_ISDIGIT() macro for simple arguments. | |
| 1561 */ | |
| 1562 int | |
|
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1563 vim_isdigit(int c) |
| 7 | 1564 { |
| 1565 return (c >= '0' && c <= '9'); | |
| 1566 } | |
| 1567 | |
| 1568 /* | |
| 1569 * Variant of isxdigit() that can handle characters > 0x100. | |
| 1570 * We don't use isxdigit() here, because on some systems it also considers | |
| 1571 * superscript 1 to be a digit. | |
| 1572 */ | |
| 1573 int | |
|
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1574 vim_isxdigit(int c) |
| 7 | 1575 { |
| 1576 return (c >= '0' && c <= '9') | |
| 1577 || (c >= 'a' && c <= 'f') | |
| 1578 || (c >= 'A' && c <= 'F'); | |
| 1579 } | |
| 1580 | |
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1581 /* |
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1582 * Corollary of vim_isdigit and vim_isxdigit() that can handle |
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1583 * characters > 0x100. |
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1584 */ |
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1585 int |
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1586 vim_isbdigit(int c) |
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1587 { |
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1588 return (c == '0' || c == '1'); |
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1589 } |
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1590 |
| 492 | 1591 /* |
| 1592 * Vim's own character class functions. These exist because many library | |
| 1593 * islower()/toupper() etc. do not work properly: they crash when used with | |
| 1594 * invalid values or can't handle latin1 when the locale is C. | |
| 1595 * Speed is most important here. | |
| 1596 */ | |
| 1597 #define LATIN1LOWER 'l' | |
| 1598 #define LATIN1UPPER 'U' | |
| 1599 | |
| 497 | 1600 static char_u latin1flags[257] = " UUUUUUUUUUUUUUUUUUUUUUUUUU llllllllllllllllllllllllll UUUUUUUUUUUUUUUUUUUUUUU UUUUUUUllllllllllllllllllllllll llllllll"; |
| 3533 | 1601 static char_u latin1upper[257] = " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`ABCDEFGHIJKLMNOPQRSTUVWXYZ{|}~\x7f\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xf7\xd8\xd9\xda\xdb\xdc\xdd\xde\xff"; |
| 1602 static char_u latin1lower[257] = " !\"#$%&'()*+,-./0123456789:;<=>?@abcdefghijklmnopqrstuvwxyz[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\x7f\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xd7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xdf\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff"; | |
| 492 | 1603 |
| 1604 int | |
|
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1605 vim_islower(int c) |
| 492 | 1606 { |
| 1607 if (c <= '@') | |
| 1608 return FALSE; | |
| 1609 if (c >= 0x80) | |
| 1610 { | |
| 1611 if (enc_utf8) | |
| 1612 return utf_islower(c); | |
| 1613 if (c >= 0x100) | |
| 1614 { | |
| 1615 #ifdef HAVE_ISWLOWER | |
| 1616 if (has_mbyte) | |
| 1617 return iswlower(c); | |
| 1618 #endif | |
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1619 // islower() can't handle these chars and may crash |
| 492 | 1620 return FALSE; |
| 1621 } | |
| 1622 if (enc_latin1like) | |
| 1623 return (latin1flags[c] & LATIN1LOWER) == LATIN1LOWER; | |
| 1624 } | |
| 1625 return islower(c); | |
| 1626 } | |
| 1627 | |
| 1628 int | |
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1629 vim_isupper(int c) |
| 492 | 1630 { |
| 1631 if (c <= '@') | |
| 1632 return FALSE; | |
| 1633 if (c >= 0x80) | |
| 1634 { | |
| 1635 if (enc_utf8) | |
| 1636 return utf_isupper(c); | |
| 1637 if (c >= 0x100) | |
| 1638 { | |
| 1639 #ifdef HAVE_ISWUPPER | |
| 1640 if (has_mbyte) | |
| 1641 return iswupper(c); | |
| 1642 #endif | |
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1643 // islower() can't handle these chars and may crash |
| 492 | 1644 return FALSE; |
| 1645 } | |
| 1646 if (enc_latin1like) | |
| 1647 return (latin1flags[c] & LATIN1UPPER) == LATIN1UPPER; | |
| 1648 } | |
| 1649 return isupper(c); | |
| 1650 } | |
| 1651 | |
| 1652 int | |
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1653 vim_toupper(int c) |
| 492 | 1654 { |
| 1655 if (c <= '@') | |
| 1656 return c; | |
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1657 if (c >= 0x80 || !(cmp_flags & CMP_KEEPASCII)) |
| 492 | 1658 { |
| 1659 if (enc_utf8) | |
| 1660 return utf_toupper(c); | |
| 1661 if (c >= 0x100) | |
| 1662 { | |
| 1663 #ifdef HAVE_TOWUPPER | |
| 1664 if (has_mbyte) | |
| 1665 return towupper(c); | |
| 1666 #endif | |
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1667 // toupper() can't handle these chars and may crash |
| 492 | 1668 return c; |
| 1669 } | |
| 1670 if (enc_latin1like) | |
| 1671 return latin1upper[c]; | |
| 1672 } | |
|
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1673 if (c < 0x80 && (cmp_flags & CMP_KEEPASCII)) |
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1674 return TOUPPER_ASC(c); |
| 492 | 1675 return TOUPPER_LOC(c); |
| 1676 } | |
| 1677 | |
| 1678 int | |
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1679 vim_tolower(int c) |
| 492 | 1680 { |
| 1681 if (c <= '@') | |
| 1682 return c; | |
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1683 if (c >= 0x80 || !(cmp_flags & CMP_KEEPASCII)) |
| 492 | 1684 { |
| 1685 if (enc_utf8) | |
| 1686 return utf_tolower(c); | |
| 1687 if (c >= 0x100) | |
| 1688 { | |
| 1689 #ifdef HAVE_TOWLOWER | |
| 1690 if (has_mbyte) | |
| 1691 return towlower(c); | |
| 1692 #endif | |
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1693 // tolower() can't handle these chars and may crash |
| 492 | 1694 return c; |
| 1695 } | |
| 1696 if (enc_latin1like) | |
| 1697 return latin1lower[c]; | |
| 1698 } | |
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1699 if (c < 0x80 && (cmp_flags & CMP_KEEPASCII)) |
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1700 return TOLOWER_ASC(c); |
| 492 | 1701 return TOLOWER_LOC(c); |
| 1702 } | |
| 1703 | |
| 7 | 1704 /* |
| 1705 * skiptowhite: skip over text until ' ' or '\t' or NUL. | |
| 1706 */ | |
| 1707 char_u * | |
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1708 skiptowhite(char_u *p) |
| 7 | 1709 { |
| 1710 while (*p != ' ' && *p != '\t' && *p != NUL) | |
| 1711 ++p; | |
| 1712 return p; | |
| 1713 } | |
| 1714 | |
| 1715 /* | |
| 1716 * skiptowhite_esc: Like skiptowhite(), but also skip escaped chars | |
| 1717 */ | |
| 1718 char_u * | |
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1719 skiptowhite_esc(char_u *p) |
| 7 | 1720 { |
| 1721 while (*p != ' ' && *p != '\t' && *p != NUL) | |
| 1722 { | |
| 1723 if ((*p == '\\' || *p == Ctrl_V) && *(p + 1) != NUL) | |
| 1724 ++p; | |
| 1725 ++p; | |
| 1726 } | |
| 1727 return p; | |
| 1728 } | |
| 1729 | |
| 1730 /* | |
| 1731 * Getdigits: Get a number from a string and skip over it. | |
| 1732 * Note: the argument is a pointer to a char_u pointer! | |
| 1733 */ | |
| 1734 long | |
|
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1735 getdigits(char_u **pp) |
| 7 | 1736 { |
| 1737 char_u *p; | |
| 1738 long retval; | |
| 1739 | |
| 1740 p = *pp; | |
| 1741 retval = atol((char *)p); | |
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1742 if (*p == '-') // skip negative sign |
| 7 | 1743 ++p; |
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1744 p = skipdigits(p); // skip to next non-digit |
| 7 | 1745 *pp = p; |
| 1746 return retval; | |
| 1747 } | |
| 1748 | |
| 1749 /* | |
| 1750 * Return TRUE if "lbuf" is empty or only contains blanks. | |
| 1751 */ | |
| 1752 int | |
|
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1753 vim_isblankline(char_u *lbuf) |
| 7 | 1754 { |
| 1755 char_u *p; | |
| 1756 | |
| 1757 p = skipwhite(lbuf); | |
| 1758 return (*p == NUL || *p == '\r' || *p == '\n'); | |
| 1759 } | |
| 1760 | |
| 1761 /* | |
| 1762 * Convert a string into a long and/or unsigned long, taking care of | |
|
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1763 * hexadecimal, octal, and binary numbers. Accepts a '-' sign. |
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1764 * If "prep" is not NULL, returns a flag to indicate the type of the number: |
| 7 | 1765 * 0 decimal |
| 1766 * '0' octal | |
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1767 * 'B' bin |
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1768 * 'b' bin |
| 7 | 1769 * 'X' hex |
| 1770 * 'x' hex | |
| 1771 * If "len" is not NULL, the length of the number in characters is returned. | |
| 1772 * If "nptr" is not NULL, the signed result is returned in it. | |
| 1773 * If "unptr" is not NULL, the unsigned result is returned in it. | |
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1774 * If "what" contains STR2NR_BIN recognize binary numbers |
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1775 * If "what" contains STR2NR_OCT recognize octal numbers |
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1776 * If "what" contains STR2NR_HEX recognize hex numbers |
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1777 * If "what" contains STR2NR_FORCE always assume bin/oct/hex. |
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1778 * If "what" contains STR2NR_QUOTE ignore embedded single quotes |
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1779 * If maxlen > 0, check at a maximum maxlen chars. |
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1780 * If strict is TRUE, check the number strictly. return *len = 0 if fail. |
| 7 | 1781 */ |
| 1782 void | |
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1783 vim_str2nr( |
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1784 char_u *start, |
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1785 int *prep, // return: type of number 0 = decimal, 'x' |
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1786 // or 'X' is hex, '0' = octal, 'b' or 'B' |
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1787 // is bin |
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1788 int *len, // return: detected length of number |
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1789 int what, // what numbers to recognize |
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1790 varnumber_T *nptr, // return: signed result |
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1791 uvarnumber_T *unptr, // return: unsigned result |
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1792 int maxlen, // max length of string to check |
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1793 int strict) // check strictly |
| 7 | 1794 { |
| 1795 char_u *ptr = start; | |
|
16706
77bcb5055fec
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parents:
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diff
changeset
|
1796 int pre = 0; // default is decimal |
| 7 | 1797 int negative = FALSE; |
|
9389
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commit https://github.com/vim/vim/commit/22fcfad29276bd5f317faf516637dcd491b96a12
Christian Brabandt <cb@256bit.org>
parents:
8643
diff
changeset
|
1798 uvarnumber_T un = 0; |
| 39 | 1799 int n; |
| 7 | 1800 |
|
16706
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diff
changeset
|
1801 if (len != NULL) |
|
77bcb5055fec
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diff
changeset
|
1802 *len = 0; |
|
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diff
changeset
|
1803 |
| 7 | 1804 if (ptr[0] == '-') |
| 1805 { | |
| 1806 negative = TRUE; | |
| 1807 ++ptr; | |
| 1808 } | |
| 1809 | |
|
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patch 8.1.2368: using old C style comments
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parents:
18574
diff
changeset
|
1810 // Recognize hex, octal, and bin. |
| 6927 | 1811 if (ptr[0] == '0' && ptr[1] != '8' && ptr[1] != '9' |
| 1812 && (maxlen == 0 || maxlen > 1)) | |
| 7 | 1813 { |
|
7447
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commit https://github.com/vim/vim/commit/887c1fea4a114e7170091942d0446c8882701b5b
Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1814 pre = ptr[1]; |
|
ad432f8f68fb
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diff
changeset
|
1815 if ((what & STR2NR_HEX) |
|
ad432f8f68fb
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diff
changeset
|
1816 && (pre == 'X' || pre == 'x') && vim_isxdigit(ptr[2]) |
|
ad432f8f68fb
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diff
changeset
|
1817 && (maxlen == 0 || maxlen > 2)) |
|
18757
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diff
changeset
|
1818 // hexadecimal |
|
7447
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Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1819 ptr += 2; |
|
ad432f8f68fb
commit https://github.com/vim/vim/commit/887c1fea4a114e7170091942d0446c8882701b5b
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parents:
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diff
changeset
|
1820 else if ((what & STR2NR_BIN) |
|
ad432f8f68fb
commit https://github.com/vim/vim/commit/887c1fea4a114e7170091942d0446c8882701b5b
Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1821 && (pre == 'B' || pre == 'b') && vim_isbdigit(ptr[2]) |
|
ad432f8f68fb
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Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1822 && (maxlen == 0 || maxlen > 2)) |
|
18757
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diff
changeset
|
1823 // binary |
|
7447
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Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1824 ptr += 2; |
| 7 | 1825 else |
| 1826 { | |
|
18757
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parents:
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diff
changeset
|
1827 // decimal or octal, default is decimal |
|
7447
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Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1828 pre = 0; |
|
ad432f8f68fb
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Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1829 if (what & STR2NR_OCT) |
| 39 | 1830 { |
|
18757
c469e1930456
patch 8.1.2368: using old C style comments
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parents:
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diff
changeset
|
1831 // Don't interpret "0", "08" or "0129" as octal. |
|
12704
ee5f3f5d3c55
patch 8.0.1230: CTRL-A in Visual mode uses character after selection
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
1832 for (n = 1; n != maxlen && VIM_ISDIGIT(ptr[n]); ++n) |
| 39 | 1833 { |
| 1834 if (ptr[n] > '7') | |
| 1835 { | |
|
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diff
changeset
|
1836 pre = 0; // can't be octal |
| 39 | 1837 break; |
| 1838 } | |
|
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Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1839 pre = '0'; // assume octal |
| 39 | 1840 } |
| 1841 } | |
| 7 | 1842 } |
| 1843 } | |
| 1844 | |
|
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Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1845 // Do the conversion manually to avoid sscanf() quirks. |
| 6927 | 1846 n = 1; |
|
18082
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
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diff
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|
1847 if (pre == 'B' || pre == 'b' |
|
1c7a91cf2356
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parents:
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diff
changeset
|
1848 || ((what & STR2NR_BIN) && (what & STR2NR_FORCE))) |
|
7447
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commit https://github.com/vim/vim/commit/887c1fea4a114e7170091942d0446c8882701b5b
Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1849 { |
|
18757
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diff
changeset
|
1850 // bin |
|
7447
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commit https://github.com/vim/vim/commit/887c1fea4a114e7170091942d0446c8882701b5b
Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1851 if (pre != 0) |
|
18757
c469e1930456
patch 8.1.2368: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1852 n += 2; // skip over "0b" |
|
7447
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commit https://github.com/vim/vim/commit/887c1fea4a114e7170091942d0446c8882701b5b
Christian Brabandt <cb@256bit.org>
parents:
7072
diff
changeset
|
1853 while ('0' <= *ptr && *ptr <= '1') |
|
ad432f8f68fb
commit https://github.com/vim/vim/commit/887c1fea4a114e7170091942d0446c8882701b5b
Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1854 { |
|
18757
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patch 8.1.2368: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1855 // avoid ubsan error for overflow |
|
14061
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patch 8.1.0048: vim_str2nr() does not handle numbers close to the maximum
Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1856 if (un <= UVARNUM_MAX / 2) |
|
47b2db8a5709
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Christian Brabandt <cb@256bit.org>
parents:
13786
diff
changeset
|
1857 un = 2 * un + (uvarnumber_T)(*ptr - '0'); |
|
10658
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patch 8.0.0219: ubsan reports errors for overflow
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
1858 else |
|
77d66e9ac0ab
patch 8.0.0219: ubsan reports errors for overflow
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parents:
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diff
changeset
|
1859 un = UVARNUM_MAX; |
|
7447
ad432f8f68fb
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Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1860 ++ptr; |
|
ad432f8f68fb
commit https://github.com/vim/vim/commit/887c1fea4a114e7170091942d0446c8882701b5b
Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1861 if (n++ == maxlen) |
|
ad432f8f68fb
commit https://github.com/vim/vim/commit/887c1fea4a114e7170091942d0446c8882701b5b
Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1862 break; |
|
18082
1c7a91cf2356
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parents:
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diff
changeset
|
1863 if ((what & STR2NR_QUOTE) && *ptr == '\'' |
|
1c7a91cf2356
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diff
changeset
|
1864 && '0' <= ptr[1] && ptr[1] <= '1') |
|
1c7a91cf2356
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Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1865 { |
|
1c7a91cf2356
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diff
changeset
|
1866 ++ptr; |
|
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1867 if (n++ == maxlen) |
|
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1868 break; |
|
1c7a91cf2356
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Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1869 } |
|
7447
ad432f8f68fb
commit https://github.com/vim/vim/commit/887c1fea4a114e7170091942d0446c8882701b5b
Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1870 } |
|
ad432f8f68fb
commit https://github.com/vim/vim/commit/887c1fea4a114e7170091942d0446c8882701b5b
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
1871 } |
|
18082
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1872 else if (pre == '0' || ((what & STR2NR_OCT) && (what & STR2NR_FORCE))) |
| 7 | 1873 { |
|
18757
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Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1874 // octal |
| 293 | 1875 while ('0' <= *ptr && *ptr <= '7') |
| 7 | 1876 { |
|
18757
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Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1877 // avoid ubsan error for overflow |
|
14061
47b2db8a5709
patch 8.1.0048: vim_str2nr() does not handle numbers close to the maximum
Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1878 if (un <= UVARNUM_MAX / 8) |
|
10658
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patch 8.0.0219: ubsan reports errors for overflow
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
1879 un = 8 * un + (uvarnumber_T)(*ptr - '0'); |
|
77d66e9ac0ab
patch 8.0.0219: ubsan reports errors for overflow
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
1880 else |
|
77d66e9ac0ab
patch 8.0.0219: ubsan reports errors for overflow
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
1881 un = UVARNUM_MAX; |
| 293 | 1882 ++ptr; |
| 6927 | 1883 if (n++ == maxlen) |
| 1884 break; | |
|
18082
1c7a91cf2356
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changeset
|
1885 if ((what & STR2NR_QUOTE) && *ptr == '\'' |
|
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1886 && '0' <= ptr[1] && ptr[1] <= '7') |
|
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1887 { |
|
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
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parents:
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diff
changeset
|
1888 ++ptr; |
|
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
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parents:
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diff
changeset
|
1889 if (n++ == maxlen) |
|
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1890 break; |
|
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
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parents:
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diff
changeset
|
1891 } |
| 7 | 1892 } |
| 293 | 1893 } |
|
18082
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1894 else if (pre != 0 || ((what & STR2NR_HEX) && (what & STR2NR_FORCE))) |
| 293 | 1895 { |
|
18757
c469e1930456
patch 8.1.2368: using old C style comments
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diff
changeset
|
1896 // hex |
|
7447
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changeset
|
1897 if (pre != 0) |
|
18757
c469e1930456
patch 8.1.2368: using old C style comments
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parents:
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diff
changeset
|
1898 n += 2; // skip over "0x" |
| 293 | 1899 while (vim_isxdigit(*ptr)) |
| 7 | 1900 { |
|
18757
c469e1930456
patch 8.1.2368: using old C style comments
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diff
changeset
|
1901 // avoid ubsan error for overflow |
|
14061
47b2db8a5709
patch 8.1.0048: vim_str2nr() does not handle numbers close to the maximum
Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1902 if (un <= UVARNUM_MAX / 16) |
|
10658
77d66e9ac0ab
patch 8.0.0219: ubsan reports errors for overflow
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
1903 un = 16 * un + (uvarnumber_T)hex2nr(*ptr); |
|
77d66e9ac0ab
patch 8.0.0219: ubsan reports errors for overflow
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parents:
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diff
changeset
|
1904 else |
|
77d66e9ac0ab
patch 8.0.0219: ubsan reports errors for overflow
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parents:
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diff
changeset
|
1905 un = UVARNUM_MAX; |
| 293 | 1906 ++ptr; |
| 6927 | 1907 if (n++ == maxlen) |
| 1908 break; | |
|
18082
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diff
changeset
|
1909 if ((what & STR2NR_QUOTE) && *ptr == '\'' && vim_isxdigit(ptr[1])) |
|
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
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diff
changeset
|
1910 { |
|
1c7a91cf2356
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parents:
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diff
changeset
|
1911 ++ptr; |
|
1c7a91cf2356
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parents:
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diff
changeset
|
1912 if (n++ == maxlen) |
|
1c7a91cf2356
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Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1913 break; |
|
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
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parents:
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diff
changeset
|
1914 } |
| 7 | 1915 } |
| 1916 } | |
| 1917 else | |
| 1918 { | |
|
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diff
changeset
|
1919 // decimal |
| 7 | 1920 while (VIM_ISDIGIT(*ptr)) |
| 1921 { | |
|
14061
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diff
changeset
|
1922 uvarnumber_T digit = (uvarnumber_T)(*ptr - '0'); |
|
47b2db8a5709
patch 8.1.0048: vim_str2nr() does not handle numbers close to the maximum
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diff
changeset
|
1923 |
|
18757
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patch 8.1.2368: using old C style comments
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diff
changeset
|
1924 // avoid ubsan error for overflow |
|
14061
47b2db8a5709
patch 8.1.0048: vim_str2nr() does not handle numbers close to the maximum
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13786
diff
changeset
|
1925 if (un < UVARNUM_MAX / 10 |
|
47b2db8a5709
patch 8.1.0048: vim_str2nr() does not handle numbers close to the maximum
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parents:
13786
diff
changeset
|
1926 || (un == UVARNUM_MAX / 10 && digit <= UVARNUM_MAX % 10)) |
|
47b2db8a5709
patch 8.1.0048: vim_str2nr() does not handle numbers close to the maximum
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diff
changeset
|
1927 un = 10 * un + digit; |
|
10658
77d66e9ac0ab
patch 8.0.0219: ubsan reports errors for overflow
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
1928 else |
|
77d66e9ac0ab
patch 8.0.0219: ubsan reports errors for overflow
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parents:
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diff
changeset
|
1929 un = UVARNUM_MAX; |
| 7 | 1930 ++ptr; |
| 6927 | 1931 if (n++ == maxlen) |
| 1932 break; | |
|
18082
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
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diff
changeset
|
1933 if ((what & STR2NR_QUOTE) && *ptr == '\'' && VIM_ISDIGIT(ptr[1])) |
|
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
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parents:
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diff
changeset
|
1934 { |
|
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1935 ++ptr; |
|
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patch 8.1.2036: the str2nr() tests fail
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1936 if (n++ == maxlen) |
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1937 break; |
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1938 } |
| 7 | 1939 } |
| 1940 } | |
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1941 |
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1942 // Check for an alphanumeric character immediately following, that is |
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1943 // most likely a typo. |
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1944 if (strict && n - 1 != maxlen && ASCII_ISALNUM(*ptr)) |
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1945 return; |
| 7 | 1946 |
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1947 if (prep != NULL) |
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1948 *prep = pre; |
| 7 | 1949 if (len != NULL) |
| 1950 *len = (int)(ptr - start); | |
| 1951 if (nptr != NULL) | |
| 16 | 1952 { |
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1953 if (negative) // account for leading '-' for decimal numbers |
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1954 { |
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1955 // avoid ubsan error for overflow |
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1956 if (un > VARNUM_MAX) |
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1957 *nptr = VARNUM_MIN; |
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1958 else |
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1959 *nptr = -(varnumber_T)un; |
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1960 } |
| 16 | 1961 else |
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1962 { |
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1963 if (un > VARNUM_MAX) |
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1964 un = VARNUM_MAX; |
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1965 *nptr = (varnumber_T)un; |
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1966 } |
| 16 | 1967 } |
| 7 | 1968 if (unptr != NULL) |
| 1969 *unptr = un; | |
| 1970 } | |
| 1971 | |
| 1972 /* | |
| 1973 * Return the value of a single hex character. | |
| 1974 * Only valid when the argument is '0' - '9', 'A' - 'F' or 'a' - 'f'. | |
| 1975 */ | |
| 1976 int | |
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1977 hex2nr(int c) |
| 7 | 1978 { |
| 1979 if (c >= 'a' && c <= 'f') | |
| 1980 return c - 'a' + 10; | |
| 1981 if (c >= 'A' && c <= 'F') | |
| 1982 return c - 'A' + 10; | |
| 1983 return c - '0'; | |
| 1984 } | |
| 1985 | |
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1986 #if defined(FEAT_TERMRESPONSE) || defined(FEAT_GUI_GTK) || defined(PROTO) |
| 7 | 1987 /* |
| 1988 * Convert two hex characters to a byte. | |
| 1989 * Return -1 if one of the characters is not hex. | |
| 1990 */ | |
| 1991 int | |
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1992 hexhex2nr(char_u *p) |
| 7 | 1993 { |
| 1994 if (!vim_isxdigit(p[0]) || !vim_isxdigit(p[1])) | |
| 1995 return -1; | |
| 1996 return (hex2nr(p[0]) << 4) + hex2nr(p[1]); | |
| 1997 } | |
| 1998 #endif | |
| 1999 | |
| 2000 /* | |
| 2001 * Return TRUE if "str" starts with a backslash that should be removed. | |
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2002 * For MS-DOS, MSWIN and OS/2 this is only done when the character after the |
| 7 | 2003 * backslash is not a normal file name character. |
| 2004 * '$' is a valid file name character, we don't remove the backslash before | |
| 2005 * it. This means it is not possible to use an environment variable after a | |
| 2006 * backslash. "C:\$VIM\doc" is taken literally, only "$VIM\doc" works. | |
| 2007 * Although "\ name" is valid, the backslash in "Program\ files" must be | |
| 2008 * removed. Assume a file name doesn't start with a space. | |
| 2009 * For multi-byte names, never remove a backslash before a non-ascii | |
| 2010 * character, assume that all multi-byte characters are valid file name | |
| 2011 * characters. | |
| 2012 */ | |
| 2013 int | |
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2014 rem_backslash(char_u *str) |
| 7 | 2015 { |
| 2016 #ifdef BACKSLASH_IN_FILENAME | |
| 2017 return (str[0] == '\\' | |
| 2018 && str[1] < 0x80 | |
| 2019 && (str[1] == ' ' | |
| 2020 || (str[1] != NUL | |
| 2021 && str[1] != '*' | |
| 2022 && str[1] != '?' | |
| 2023 && !vim_isfilec(str[1])))); | |
| 2024 #else | |
| 2025 return (str[0] == '\\' && str[1] != NUL); | |
| 2026 #endif | |
| 2027 } | |
| 2028 | |
| 2029 /* | |
| 2030 * Halve the number of backslashes in a file name argument. | |
| 2031 * For MS-DOS we only do this if the character after the backslash | |
| 2032 * is not a normal file character. | |
| 2033 */ | |
| 2034 void | |
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2035 backslash_halve(char_u *p) |
| 7 | 2036 { |
| 2037 for ( ; *p; ++p) | |
| 2038 if (rem_backslash(p)) | |
| 1621 | 2039 STRMOVE(p, p + 1); |
| 7 | 2040 } |
| 2041 | |
| 2042 /* | |
| 2043 * backslash_halve() plus save the result in allocated memory. | |
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2044 * However, returns "p" when out of memory. |
| 7 | 2045 */ |
| 2046 char_u * | |
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2047 backslash_halve_save(char_u *p) |
| 7 | 2048 { |
| 2049 char_u *res; | |
| 2050 | |
| 2051 res = vim_strsave(p); | |
| 2052 if (res == NULL) | |
| 2053 return p; | |
| 2054 backslash_halve(res); | |
| 2055 return res; | |
| 2056 } | |
| 2057 | |
| 2058 #if (defined(EBCDIC) && defined(FEAT_POSTSCRIPT)) || defined(PROTO) | |
| 2059 /* | |
| 2060 * Table for EBCDIC to ASCII conversion unashamedly taken from xxd.c! | |
| 2061 * The first 64 entries have been added to map control characters defined in | |
| 2062 * ascii.h | |
| 2063 */ | |
| 2064 static char_u ebcdic2ascii_tab[256] = | |
| 2065 { | |
| 2066 0000, 0001, 0002, 0003, 0004, 0011, 0006, 0177, | |
| 2067 0010, 0011, 0012, 0013, 0014, 0015, 0016, 0017, | |
| 2068 0020, 0021, 0022, 0023, 0024, 0012, 0010, 0027, | |
| 2069 0030, 0031, 0032, 0033, 0033, 0035, 0036, 0037, | |
| 2070 0040, 0041, 0042, 0043, 0044, 0045, 0046, 0047, | |
| 2071 0050, 0051, 0052, 0053, 0054, 0055, 0056, 0057, | |
| 2072 0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067, | |
| 2073 0070, 0071, 0072, 0073, 0074, 0075, 0076, 0077, | |
| 2074 0040, 0240, 0241, 0242, 0243, 0244, 0245, 0246, | |
| 2075 0247, 0250, 0325, 0056, 0074, 0050, 0053, 0174, | |
| 2076 0046, 0251, 0252, 0253, 0254, 0255, 0256, 0257, | |
| 2077 0260, 0261, 0041, 0044, 0052, 0051, 0073, 0176, | |
| 2078 0055, 0057, 0262, 0263, 0264, 0265, 0266, 0267, | |
| 2079 0270, 0271, 0313, 0054, 0045, 0137, 0076, 0077, | |
| 2080 0272, 0273, 0274, 0275, 0276, 0277, 0300, 0301, | |
| 2081 0302, 0140, 0072, 0043, 0100, 0047, 0075, 0042, | |
| 2082 0303, 0141, 0142, 0143, 0144, 0145, 0146, 0147, | |
| 2083 0150, 0151, 0304, 0305, 0306, 0307, 0310, 0311, | |
| 2084 0312, 0152, 0153, 0154, 0155, 0156, 0157, 0160, | |
| 2085 0161, 0162, 0136, 0314, 0315, 0316, 0317, 0320, | |
| 2086 0321, 0345, 0163, 0164, 0165, 0166, 0167, 0170, | |
| 2087 0171, 0172, 0322, 0323, 0324, 0133, 0326, 0327, | |
| 2088 0330, 0331, 0332, 0333, 0334, 0335, 0336, 0337, | |
| 2089 0340, 0341, 0342, 0343, 0344, 0135, 0346, 0347, | |
| 2090 0173, 0101, 0102, 0103, 0104, 0105, 0106, 0107, | |
| 2091 0110, 0111, 0350, 0351, 0352, 0353, 0354, 0355, | |
| 2092 0175, 0112, 0113, 0114, 0115, 0116, 0117, 0120, | |
| 2093 0121, 0122, 0356, 0357, 0360, 0361, 0362, 0363, | |
| 2094 0134, 0237, 0123, 0124, 0125, 0126, 0127, 0130, | |
| 2095 0131, 0132, 0364, 0365, 0366, 0367, 0370, 0371, | |
| 2096 0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067, | |
| 2097 0070, 0071, 0372, 0373, 0374, 0375, 0376, 0377 | |
| 2098 }; | |
| 2099 | |
| 2100 /* | |
| 2101 * Convert a buffer worth of characters from EBCDIC to ASCII. Only useful if | |
| 2102 * wanting 7-bit ASCII characters out the other end. | |
| 2103 */ | |
| 2104 void | |
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2105 ebcdic2ascii(char_u *buffer, int len) |
| 7 | 2106 { |
| 2107 int i; | |
| 2108 | |
| 2109 for (i = 0; i < len; i++) | |
| 2110 buffer[i] = ebcdic2ascii_tab[buffer[i]]; | |
| 2111 } | |
| 2112 #endif |