Mercurial > vim
annotate src/charset.c @ 23787:7b30bc27e54b
Added tag v8.2.2434 for changeset 0512923e54e1de7e24efdc5badb50c6889323fe7
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Sat, 30 Jan 2021 23:15:07 +0100 |
| parents | ee43d943c3bb |
| children | 44be09b25619 |
| 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 */ | |
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502 static char_u transchar_charbuf[7]; |
| 7 | 503 |
| 504 char_u * | |
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505 transchar(int c) |
| 7 | 506 { |
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507 return transchar_buf(curbuf, c); |
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508 } |
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509 |
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510 char_u * |
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511 transchar_buf(buf_T *buf, int c) |
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512 { |
| 7 | 513 int i; |
| 514 | |
| 515 i = 0; | |
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516 if (IS_SPECIAL(c)) // special key code, display as ~@ char |
| 7 | 517 { |
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518 transchar_charbuf[0] = '~'; |
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519 transchar_charbuf[1] = '@'; |
| 7 | 520 i = 2; |
| 521 c = K_SECOND(c); | |
| 522 } | |
| 523 | |
| 524 if ((!chartab_initialized && ( | |
| 525 #ifdef EBCDIC | |
| 526 (c >= 64 && c < 255) | |
| 527 #else | |
| 528 (c >= ' ' && c <= '~') | |
| 529 #endif | |
| 530 )) || (c < 256 && vim_isprintc_strict(c))) | |
| 531 { | |
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532 // printable character |
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533 transchar_charbuf[i] = c; |
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534 transchar_charbuf[i + 1] = NUL; |
| 7 | 535 } |
| 536 else | |
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537 transchar_nonprint(buf, transchar_charbuf + i, c); |
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538 return transchar_charbuf; |
| 7 | 539 } |
| 540 | |
| 541 /* | |
| 542 * Like transchar(), but called with a byte instead of a character. Checks | |
| 543 * for an illegal UTF-8 byte. | |
| 544 */ | |
| 545 char_u * | |
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546 transchar_byte(int c) |
| 7 | 547 { |
| 548 if (enc_utf8 && c >= 0x80) | |
| 549 { | |
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550 transchar_nonprint(curbuf, transchar_charbuf, c); |
|
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551 return transchar_charbuf; |
| 7 | 552 } |
| 553 return transchar(c); | |
| 554 } | |
| 555 | |
| 556 /* | |
| 557 * Convert non-printable character to two or more printable characters in | |
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558 * "buf[]". "charbuf" needs to be able to hold five bytes. |
| 7 | 559 * Does NOT work for multi-byte characters, c must be <= 255. |
| 560 */ | |
| 561 void | |
|
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562 transchar_nonprint(buf_T *buf, char_u *charbuf, int c) |
| 7 | 563 { |
| 564 if (c == NL) | |
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565 c = NUL; // we use newline in place of a NUL |
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566 else if (c == CAR && get_fileformat(buf) == EOL_MAC) |
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567 c = NL; // we use CR in place of NL in this case |
| 7 | 568 |
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569 if (dy_flags & DY_UHEX) // 'display' has "uhex" |
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570 transchar_hex(charbuf, c); |
| 7 | 571 |
| 572 #ifdef EBCDIC | |
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573 // For EBCDIC only the characters 0-63 and 255 are not printable |
| 7 | 574 else if (CtrlChar(c) != 0 || c == DEL) |
| 575 #else | |
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576 else if (c <= 0x7f) // 0x00 - 0x1f and 0x7f |
| 7 | 577 #endif |
| 578 { | |
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579 charbuf[0] = '^'; |
| 7 | 580 #ifdef EBCDIC |
| 581 if (c == DEL) | |
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582 charbuf[1] = '?'; // DEL displayed as ^? |
| 7 | 583 else |
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584 charbuf[1] = CtrlChar(c); |
| 7 | 585 #else |
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586 charbuf[1] = c ^ 0x40; // DEL displayed as ^? |
| 7 | 587 #endif |
| 588 | |
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589 charbuf[2] = NUL; |
| 7 | 590 } |
| 591 else if (enc_utf8 && c >= 0x80) | |
| 592 { | |
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593 transchar_hex(charbuf, c); |
| 7 | 594 } |
| 595 #ifndef EBCDIC | |
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596 else if (c >= ' ' + 0x80 && c <= '~' + 0x80) // 0xa0 - 0xfe |
| 7 | 597 { |
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598 charbuf[0] = '|'; |
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599 charbuf[1] = c - 0x80; |
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600 charbuf[2] = NUL; |
| 7 | 601 } |
| 602 #else | |
| 603 else if (c < 64) | |
| 604 { | |
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605 charbuf[0] = '~'; |
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606 charbuf[1] = MetaChar(c); |
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607 charbuf[2] = NUL; |
| 7 | 608 } |
| 609 #endif | |
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610 else // 0x80 - 0x9f and 0xff |
| 7 | 611 { |
| 612 /* | |
| 613 * TODO: EBCDIC I don't know what to do with this chars, so I display | |
| 614 * them as '~?' for now | |
| 615 */ | |
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616 charbuf[0] = '~'; |
| 7 | 617 #ifdef EBCDIC |
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618 charbuf[1] = '?'; // 0xff displayed as ~? |
| 7 | 619 #else |
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620 charbuf[1] = (c - 0x80) ^ 0x40; // 0xff displayed as ~? |
| 7 | 621 #endif |
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622 charbuf[2] = NUL; |
| 7 | 623 } |
| 624 } | |
| 625 | |
| 626 void | |
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627 transchar_hex(char_u *buf, int c) |
| 7 | 628 { |
| 629 int i = 0; | |
| 630 | |
| 631 buf[0] = '<'; | |
| 632 if (c > 255) | |
| 633 { | |
| 634 buf[++i] = nr2hex((unsigned)c >> 12); | |
| 635 buf[++i] = nr2hex((unsigned)c >> 8); | |
| 636 } | |
| 637 buf[++i] = nr2hex((unsigned)c >> 4); | |
| 1869 | 638 buf[++i] = nr2hex((unsigned)c); |
| 7 | 639 buf[++i] = '>'; |
| 640 buf[++i] = NUL; | |
| 641 } | |
| 642 | |
| 643 /* | |
| 644 * Convert the lower 4 bits of byte "c" to its hex character. | |
| 645 * Lower case letters are used to avoid the confusion of <F1> being 0xf1 or | |
| 646 * function key 1. | |
| 647 */ | |
| 1869 | 648 static unsigned |
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649 nr2hex(unsigned c) |
| 7 | 650 { |
| 651 if ((c & 0xf) <= 9) | |
| 652 return (c & 0xf) + '0'; | |
| 653 return (c & 0xf) - 10 + 'a'; | |
| 654 } | |
| 655 | |
| 656 /* | |
| 657 * Return number of display cells occupied by byte "b". | |
| 658 * Caller must make sure 0 <= b <= 255. | |
| 659 * For multi-byte mode "b" must be the first byte of a character. | |
| 660 * A TAB is counted as two cells: "^I". | |
| 661 * For UTF-8 mode this will return 0 for bytes >= 0x80, because the number of | |
| 662 * cells depends on further bytes. | |
| 663 */ | |
| 664 int | |
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665 byte2cells(int b) |
| 7 | 666 { |
| 667 if (enc_utf8 && b >= 0x80) | |
| 668 return 0; | |
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669 return (g_chartab[b] & CT_CELL_MASK); |
| 7 | 670 } |
| 671 | |
| 672 /* | |
| 673 * Return number of display cells occupied by character "c". | |
| 674 * "c" can be a special key (negative number) in which case 3 or 4 is returned. | |
| 675 * A TAB is counted as two cells: "^I" or four: "<09>". | |
| 676 */ | |
| 677 int | |
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678 char2cells(int c) |
| 7 | 679 { |
| 680 if (IS_SPECIAL(c)) | |
| 681 return char2cells(K_SECOND(c)) + 2; | |
| 682 if (c >= 0x80) | |
| 683 { | |
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684 // UTF-8: above 0x80 need to check the value |
| 7 | 685 if (enc_utf8) |
| 686 return utf_char2cells(c); | |
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687 // DBCS: double-byte means double-width, except for euc-jp with first |
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688 // byte 0x8e |
| 7 | 689 if (enc_dbcs != 0 && c >= 0x100) |
| 690 { | |
| 691 if (enc_dbcs == DBCS_JPNU && ((unsigned)c >> 8) == 0x8e) | |
| 692 return 1; | |
| 693 return 2; | |
| 694 } | |
| 695 } | |
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696 return (g_chartab[c & 0xff] & CT_CELL_MASK); |
| 7 | 697 } |
| 698 | |
| 699 /* | |
| 700 * Return number of display cells occupied by character at "*p". | |
| 701 * A TAB is counted as two cells: "^I" or four: "<09>". | |
| 702 */ | |
| 703 int | |
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704 ptr2cells(char_u *p) |
| 7 | 705 { |
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706 // For UTF-8 we need to look at more bytes if the first byte is >= 0x80. |
| 7 | 707 if (enc_utf8 && *p >= 0x80) |
| 708 return utf_ptr2cells(p); | |
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709 // For DBCS we can tell the cell count from the first byte. |
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710 return (g_chartab[*p] & CT_CELL_MASK); |
| 7 | 711 } |
| 712 | |
| 713 /* | |
| 3292 | 714 * Return the number of character cells string "s" will take on the screen, |
| 7 | 715 * counting TABs as two characters: "^I". |
| 716 */ | |
| 717 int | |
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718 vim_strsize(char_u *s) |
| 7 | 719 { |
| 720 return vim_strnsize(s, (int)MAXCOL); | |
| 721 } | |
| 722 | |
| 723 /* | |
| 3292 | 724 * Return the number of character cells string "s[len]" will take on the |
| 725 * screen, counting TABs as two characters: "^I". | |
| 7 | 726 */ |
| 727 int | |
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728 vim_strnsize(char_u *s, int len) |
| 7 | 729 { |
| 730 int size = 0; | |
| 731 | |
| 732 while (*s != NUL && --len >= 0) | |
| 733 if (has_mbyte) | |
| 734 { | |
| 474 | 735 int l = (*mb_ptr2len)(s); |
| 7 | 736 |
| 737 size += ptr2cells(s); | |
| 738 s += l; | |
| 739 len -= l - 1; | |
| 740 } | |
| 741 else | |
| 742 size += byte2cells(*s++); | |
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743 |
| 7 | 744 return size; |
| 745 } | |
| 746 | |
| 747 /* | |
| 748 * Return the number of characters 'c' will take on the screen, taking | |
| 749 * into account the size of a tab. | |
| 750 * Use a define to make it fast, this is used very often!!! | |
| 751 * Also see getvcol() below. | |
| 752 */ | |
| 753 | |
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754 #ifdef FEAT_VARTABS |
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755 # define RET_WIN_BUF_CHARTABSIZE(wp, buf, p, col) \ |
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756 if (*(p) == TAB && (!(wp)->w_p_list || lcs_tab1)) \ |
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757 { \ |
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758 return tabstop_padding(col, (buf)->b_p_ts, (buf)->b_p_vts_array); \ |
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759 } \ |
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760 else \ |
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761 return ptr2cells(p); |
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762 #else |
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763 # define RET_WIN_BUF_CHARTABSIZE(wp, buf, p, col) \ |
| 7 | 764 if (*(p) == TAB && (!(wp)->w_p_list || lcs_tab1)) \ |
| 765 { \ | |
| 766 int ts; \ | |
| 767 ts = (buf)->b_p_ts; \ | |
| 768 return (int)(ts - (col % ts)); \ | |
| 769 } \ | |
| 770 else \ | |
| 771 return ptr2cells(p); | |
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772 #endif |
| 7 | 773 |
| 774 int | |
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775 chartabsize(char_u *p, colnr_T col) |
| 7 | 776 { |
| 777 RET_WIN_BUF_CHARTABSIZE(curwin, curbuf, p, col) | |
| 778 } | |
| 779 | |
| 780 #ifdef FEAT_LINEBREAK | |
| 781 static int | |
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782 win_chartabsize(win_T *wp, char_u *p, colnr_T col) |
| 7 | 783 { |
| 784 RET_WIN_BUF_CHARTABSIZE(wp, wp->w_buffer, p, col) | |
| 785 } | |
| 786 #endif | |
| 787 | |
| 788 /* | |
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789 * Return the number of characters the string 's' will take on the screen, |
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790 * taking into account the size of a tab. |
| 7 | 791 */ |
| 792 int | |
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793 linetabsize(char_u *s) |
| 7 | 794 { |
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795 return linetabsize_col(0, s); |
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796 } |
|
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797 |
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798 /* |
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799 * Like linetabsize(), but starting at column "startcol". |
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800 */ |
|
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801 int |
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802 linetabsize_col(int startcol, char_u *s) |
|
2339
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803 { |
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804 colnr_T col = startcol; |
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805 char_u *line = s; // pointer to start of line, for breakindent |
| 7 | 806 |
| 807 while (*s != NUL) | |
| 5995 | 808 col += lbr_chartabsize_adv(line, &s, col); |
| 7 | 809 return (int)col; |
| 810 } | |
| 811 | |
| 812 /* | |
| 813 * Like linetabsize(), but for a given window instead of the current one. | |
| 814 */ | |
| 815 int | |
|
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816 win_linetabsize(win_T *wp, char_u *line, colnr_T len) |
| 7 | 817 { |
| 818 colnr_T col = 0; | |
| 819 char_u *s; | |
| 820 | |
| 5995 | 821 for (s = line; *s != NUL && (len == MAXCOL || s < line + len); |
|
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822 MB_PTR_ADV(s)) |
| 5995 | 823 col += win_lbr_chartabsize(wp, line, s, col, NULL); |
| 7 | 824 return (int)col; |
| 825 } | |
| 826 | |
| 827 /* | |
| 42 | 828 * Return TRUE if 'c' is a normal identifier character: |
| 829 * Letters and characters from the 'isident' option. | |
| 7 | 830 */ |
| 831 int | |
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832 vim_isIDc(int c) |
| 7 | 833 { |
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834 return (c > 0 && c < 0x100 && (g_chartab[c] & CT_ID_CHAR)); |
| 7 | 835 } |
| 836 | |
| 837 /* | |
| 838 * return TRUE if 'c' is a keyword character: Letters and characters from | |
|
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839 * 'iskeyword' option for the current buffer. |
| 7 | 840 * For multi-byte characters mb_get_class() is used (builtin rules). |
| 841 */ | |
| 842 int | |
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843 vim_iswordc(int c) |
| 7 | 844 { |
| 4043 | 845 return vim_iswordc_buf(c, curbuf); |
| 846 } | |
| 847 | |
| 848 int | |
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849 vim_iswordc_buf(int c, buf_T *buf) |
| 4043 | 850 { |
| 7 | 851 if (c >= 0x100) |
| 852 { | |
| 853 if (enc_dbcs != 0) | |
| 1869 | 854 return dbcs_class((unsigned)c >> 8, (unsigned)(c & 0xff)) >= 2; |
| 7 | 855 if (enc_utf8) |
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856 return utf_class_buf(c, buf) >= 2; |
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857 return FALSE; |
| 7 | 858 } |
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859 return (c > 0 && GET_CHARTAB(buf, c) != 0); |
| 7 | 860 } |
| 861 | |
| 862 /* | |
| 863 * Just like vim_iswordc() but uses a pointer to the (multi-byte) character. | |
| 864 */ | |
| 865 int | |
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866 vim_iswordp(char_u *p) |
| 7 | 867 { |
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868 return vim_iswordp_buf(p, curbuf); |
| 7 | 869 } |
| 870 | |
| 871 int | |
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872 vim_iswordp_buf(char_u *p, buf_T *buf) |
| 7 | 873 { |
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874 int c = *p; |
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875 |
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876 if (has_mbyte && MB_BYTE2LEN(c) > 1) |
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877 c = (*mb_ptr2char)(p); |
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878 return vim_iswordc_buf(c, buf); |
| 7 | 879 } |
| 880 | |
| 881 /* | |
| 882 * return TRUE if 'c' is a valid file-name character | |
| 883 * Assume characters above 0x100 are valid (multi-byte). | |
| 884 */ | |
| 885 int | |
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886 vim_isfilec(int c) |
| 7 | 887 { |
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888 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_FNAME_CHAR))); |
| 7 | 889 } |
| 890 | |
| 891 /* | |
| 1369 | 892 * return TRUE if 'c' is a valid file-name character or a wildcard character |
| 893 * Assume characters above 0x100 are valid (multi-byte). | |
| 894 * Explicitly interpret ']' as a wildcard character as mch_has_wildcard("]") | |
| 895 * returns false. | |
| 896 */ | |
| 897 int | |
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898 vim_isfilec_or_wc(int c) |
| 1369 | 899 { |
| 900 char_u buf[2]; | |
| 901 | |
| 902 buf[0] = (char_u)c; | |
| 903 buf[1] = NUL; | |
| 904 return vim_isfilec(c) || c == ']' || mch_has_wildcard(buf); | |
| 905 } | |
| 906 | |
| 907 /* | |
|
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908 * Return TRUE if 'c' is a printable character. |
| 7 | 909 * Assume characters above 0x100 are printable (multi-byte), except for |
| 910 * Unicode. | |
| 911 */ | |
| 912 int | |
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913 vim_isprintc(int c) |
| 7 | 914 { |
| 915 if (enc_utf8 && c >= 0x100) | |
| 916 return utf_printable(c); | |
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917 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_PRINT_CHAR))); |
| 7 | 918 } |
| 919 | |
| 920 /* | |
| 921 * Strict version of vim_isprintc(c), don't return TRUE if "c" is the head | |
| 922 * byte of a double-byte character. | |
| 923 */ | |
| 924 int | |
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925 vim_isprintc_strict(int c) |
| 7 | 926 { |
| 927 if (enc_dbcs != 0 && c < 0x100 && MB_BYTE2LEN(c) > 1) | |
| 928 return FALSE; | |
| 929 if (enc_utf8 && c >= 0x100) | |
| 930 return utf_printable(c); | |
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931 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_PRINT_CHAR))); |
| 7 | 932 } |
| 933 | |
| 934 /* | |
| 935 * like chartabsize(), but also check for line breaks on the screen | |
| 936 */ | |
| 937 int | |
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938 lbr_chartabsize( |
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939 char_u *line UNUSED, // start of the line |
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940 unsigned char *s, |
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941 colnr_T col) |
| 7 | 942 { |
| 943 #ifdef FEAT_LINEBREAK | |
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944 if (!curwin->w_p_lbr && *get_showbreak_value(curwin) == NUL |
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945 && !curwin->w_p_bri) |
| 7 | 946 { |
| 947 #endif | |
| 948 if (curwin->w_p_wrap) | |
| 949 return win_nolbr_chartabsize(curwin, s, col, NULL); | |
| 950 RET_WIN_BUF_CHARTABSIZE(curwin, curbuf, s, col) | |
| 951 #ifdef FEAT_LINEBREAK | |
| 952 } | |
| 5995 | 953 return win_lbr_chartabsize(curwin, line == NULL ? s : line, s, col, NULL); |
| 7 | 954 #endif |
| 955 } | |
| 956 | |
| 957 /* | |
| 958 * Call lbr_chartabsize() and advance the pointer. | |
| 959 */ | |
| 960 int | |
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961 lbr_chartabsize_adv( |
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962 char_u *line, // start of the line |
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963 char_u **s, |
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964 colnr_T col) |
| 7 | 965 { |
| 966 int retval; | |
| 967 | |
| 5995 | 968 retval = lbr_chartabsize(line, *s, col); |
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969 MB_PTR_ADV(*s); |
| 7 | 970 return retval; |
| 971 } | |
| 972 | |
| 973 /* | |
| 974 * This function is used very often, keep it fast!!!! | |
| 975 * | |
| 976 * If "headp" not NULL, set *headp to the size of what we for 'showbreak' | |
| 977 * string at start of line. Warning: *headp is only set if it's a non-zero | |
| 978 * value, init to 0 before calling. | |
| 979 */ | |
| 980 int | |
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981 win_lbr_chartabsize( |
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982 win_T *wp, |
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983 char_u *line UNUSED, // start of the line |
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984 char_u *s, |
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985 colnr_T col, |
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986 int *headp UNUSED) |
| 7 | 987 { |
| 988 #ifdef FEAT_LINEBREAK | |
| 989 int c; | |
| 990 int size; | |
| 991 colnr_T col2; | |
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992 colnr_T col_adj = 0; // col + screen size of tab |
| 7 | 993 colnr_T colmax; |
| 994 int added; | |
| 995 int mb_added = 0; | |
| 996 int numberextra; | |
| 997 char_u *ps; | |
| 998 int tab_corr = (*s == TAB); | |
| 236 | 999 int n; |
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1000 char_u *sbr; |
| 7 | 1001 |
| 1002 /* | |
| 5995 | 1003 * No 'linebreak', 'showbreak' and 'breakindent': return quickly. |
| 7 | 1004 */ |
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1005 if (!wp->w_p_lbr && !wp->w_p_bri && *get_showbreak_value(wp) == NUL) |
| 7 | 1006 #endif |
| 1007 { | |
| 1008 if (wp->w_p_wrap) | |
| 1009 return win_nolbr_chartabsize(wp, s, col, headp); | |
| 1010 RET_WIN_BUF_CHARTABSIZE(wp, wp->w_buffer, s, col) | |
| 1011 } | |
| 1012 | |
| 1013 #ifdef FEAT_LINEBREAK | |
| 1014 /* | |
| 1015 * First get normal size, without 'linebreak' | |
| 1016 */ | |
| 1017 size = win_chartabsize(wp, s, col); | |
| 1018 c = *s; | |
| 6024 | 1019 if (tab_corr) |
| 1020 col_adj = size - 1; | |
| 7 | 1021 |
| 1022 /* | |
| 1023 * If 'linebreak' set check at a blank before a non-blank if the line | |
| 1024 * needs a break here | |
| 1025 */ | |
| 1026 if (wp->w_p_lbr | |
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1027 && VIM_ISBREAK(c) |
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1028 && !VIM_ISBREAK((int)s[1]) |
| 7 | 1029 && wp->w_p_wrap |
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1030 && wp->w_width != 0) |
| 7 | 1031 { |
| 1032 /* | |
| 1033 * Count all characters from first non-blank after a blank up to next | |
| 1034 * non-blank after a blank. | |
| 1035 */ | |
| 1036 numberextra = win_col_off(wp); | |
| 1037 col2 = col; | |
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1038 colmax = (colnr_T)(wp->w_width - numberextra - col_adj); |
| 7 | 1039 if (col >= colmax) |
| 236 | 1040 { |
| 6024 | 1041 colmax += col_adj; |
| 1042 n = colmax + win_col_off2(wp); | |
| 236 | 1043 if (n > 0) |
| 6024 | 1044 colmax += (((col - colmax) / n) + 1) * n - col_adj; |
| 236 | 1045 } |
| 1046 | |
| 7 | 1047 for (;;) |
| 1048 { | |
| 1049 ps = s; | |
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1050 MB_PTR_ADV(s); |
| 7 | 1051 c = *s; |
| 1052 if (!(c != NUL | |
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1053 && (VIM_ISBREAK(c) |
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1054 || (!VIM_ISBREAK(c) |
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1055 && (col2 == col || !VIM_ISBREAK((int)*ps)))))) |
| 7 | 1056 break; |
| 1057 | |
| 1058 col2 += win_chartabsize(wp, s, col2); | |
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1059 if (col2 >= colmax) // doesn't fit |
| 7 | 1060 { |
| 6024 | 1061 size = colmax - col + col_adj; |
| 7 | 1062 break; |
| 1063 } | |
| 1064 } | |
| 1065 } | |
| 1066 else if (has_mbyte && size == 2 && MB_BYTE2LEN(*s) > 1 | |
| 1067 && wp->w_p_wrap && in_win_border(wp, col)) | |
| 1068 { | |
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1069 ++size; // Count the ">" in the last column. |
| 7 | 1070 mb_added = 1; |
| 1071 } | |
| 1072 | |
| 1073 /* | |
| 5995 | 1074 * May have to add something for 'breakindent' and/or 'showbreak' |
| 1075 * string at start of line. | |
| 7 | 1076 * Set *headp to the size of what we add. |
| 1077 */ | |
| 1078 added = 0; | |
|
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1079 sbr = get_showbreak_value(wp); |
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1080 if ((*sbr != NUL || wp->w_p_bri) && wp->w_p_wrap && col != 0) |
| 7 | 1081 { |
| 6503 | 1082 colnr_T sbrlen = 0; |
| 1083 int numberwidth = win_col_off(wp); | |
| 1084 | |
| 1085 numberextra = numberwidth; | |
| 7 | 1086 col += numberextra + mb_added; |
|
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1087 if (col >= (colnr_T)wp->w_width) |
| 7 | 1088 { |
|
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1089 col -= wp->w_width; |
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1090 numberextra = wp->w_width - (numberextra - win_col_off2(wp)); |
| 6503 | 1091 if (col >= numberextra && numberextra > 0) |
| 6312 | 1092 col %= numberextra; |
|
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1093 if (*sbr != NUL) |
| 6288 | 1094 { |
|
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1095 sbrlen = (colnr_T)MB_CHARLEN(sbr); |
| 6288 | 1096 if (col >= sbrlen) |
| 1097 col -= sbrlen; | |
| 1098 } | |
| 6503 | 1099 if (col >= numberextra && numberextra > 0) |
| 7 | 1100 col = col % numberextra; |
| 6503 | 1101 else if (col > 0 && numberextra > 0) |
| 1102 col += numberwidth - win_col_off2(wp); | |
| 1103 | |
| 1104 numberwidth -= win_col_off2(wp); | |
| 7 | 1105 } |
|
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1106 if (col == 0 || col + size + sbrlen > (colnr_T)wp->w_width) |
| 7 | 1107 { |
| 5995 | 1108 added = 0; |
|
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1109 if (*sbr != NUL) |
| 6503 | 1110 { |
|
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1111 if (size + sbrlen + numberwidth > (colnr_T)wp->w_width) |
| 6503 | 1112 { |
|
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1113 // calculate effective window width |
|
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1114 int width = (colnr_T)wp->w_width - sbrlen - numberwidth; |
|
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1115 int prev_width = col |
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1116 ? ((colnr_T)wp->w_width - (sbrlen + col)) : 0; |
|
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1117 |
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1118 if (width <= 0) |
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1119 width = (colnr_T)1; |
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1120 added += ((size - prev_width) / width) * vim_strsize(sbr); |
| 6503 | 1121 if ((size - prev_width) % width) |
|
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1122 // wrapped, add another length of 'sbr' |
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1123 added += vim_strsize(sbr); |
| 6503 | 1124 } |
| 1125 else | |
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1126 added += vim_strsize(sbr); |
| 6503 | 1127 } |
| 5995 | 1128 if (wp->w_p_bri) |
| 1129 added += get_breakindent_win(wp, line); | |
| 1130 | |
| 6160 | 1131 size += added; |
| 7 | 1132 if (col != 0) |
| 1133 added = 0; | |
| 1134 } | |
| 1135 } | |
| 1136 if (headp != NULL) | |
| 1137 *headp = added + mb_added; | |
| 1138 return size; | |
| 1139 #endif | |
| 1140 } | |
| 1141 | |
| 1142 /* | |
| 1143 * Like win_lbr_chartabsize(), except that we know 'linebreak' is off and | |
| 1144 * 'wrap' is on. This means we need to check for a double-byte character that | |
| 1145 * doesn't fit at the end of the screen line. | |
| 1146 */ | |
| 1147 static int | |
|
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1148 win_nolbr_chartabsize( |
|
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1149 win_T *wp, |
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1150 char_u *s, |
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1151 colnr_T col, |
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1152 int *headp) |
| 7 | 1153 { |
| 1154 int n; | |
| 1155 | |
| 1156 if (*s == TAB && (!wp->w_p_list || lcs_tab1)) | |
| 1157 { | |
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1158 # ifdef FEAT_VARTABS |
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1159 return tabstop_padding(col, wp->w_buffer->b_p_ts, |
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1160 wp->w_buffer->b_p_vts_array); |
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1161 # else |
| 7 | 1162 n = wp->w_buffer->b_p_ts; |
| 1163 return (int)(n - (col % n)); | |
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1164 # endif |
| 7 | 1165 } |
| 1166 n = ptr2cells(s); | |
|
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1167 // Add one cell for a double-width character in the last column of the |
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1168 // window, displayed with a ">". |
| 7 | 1169 if (n == 2 && MB_BYTE2LEN(*s) > 1 && in_win_border(wp, col)) |
| 1170 { | |
| 1171 if (headp != NULL) | |
| 1172 *headp = 1; | |
| 1173 return 3; | |
| 1174 } | |
| 1175 return n; | |
| 1176 } | |
| 1177 | |
| 1178 /* | |
| 1179 * Return TRUE if virtual column "vcol" is in the rightmost column of window | |
| 1180 * "wp". | |
| 1181 */ | |
|
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1182 static int |
|
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1183 in_win_border(win_T *wp, colnr_T vcol) |
| 7 | 1184 { |
|
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1185 int width1; // width of first line (after line number) |
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1186 int width2; // width of further lines |
| 7 | 1187 |
|
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1188 if (wp->w_width == 0) // there is no border |
| 7 | 1189 return FALSE; |
|
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|
1190 width1 = wp->w_width - win_col_off(wp); |
| 1869 | 1191 if ((int)vcol < width1 - 1) |
| 7 | 1192 return FALSE; |
| 1869 | 1193 if ((int)vcol == width1 - 1) |
| 7 | 1194 return TRUE; |
| 1195 width2 = width1 + win_col_off2(wp); | |
| 1970 | 1196 if (width2 <= 0) |
| 1197 return FALSE; | |
| 7 | 1198 return ((vcol - width1) % width2 == width2 - 1); |
| 1199 } | |
| 1200 | |
| 1201 /* | |
| 1202 * Get virtual column number of pos. | |
| 1203 * start: on the first position of this character (TAB, ctrl) | |
| 1204 * cursor: where the cursor is on this character (first char, except for TAB) | |
| 1205 * end: on the last position of this character (TAB, ctrl) | |
| 1206 * | |
| 1207 * This is used very often, keep it fast! | |
| 1208 */ | |
| 1209 void | |
|
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1210 getvcol( |
|
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1211 win_T *wp, |
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1212 pos_T *pos, |
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1213 colnr_T *start, |
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|
1214 colnr_T *cursor, |
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|
1215 colnr_T *end) |
| 7 | 1216 { |
| 1217 colnr_T vcol; | |
|
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1218 char_u *ptr; // points to current char |
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1219 char_u *posptr; // points to char at pos->col |
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1220 char_u *line; // start of the line |
| 7 | 1221 int incr; |
| 1222 int head; | |
|
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1223 #ifdef FEAT_VARTABS |
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1224 int *vts = wp->w_buffer->b_p_vts_array; |
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1225 #endif |
| 7 | 1226 int ts = wp->w_buffer->b_p_ts; |
| 1227 int c; | |
| 1228 | |
| 1229 vcol = 0; | |
| 5995 | 1230 line = ptr = ml_get_buf(wp->w_buffer, pos->lnum, FALSE); |
|
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1231 if (pos->col == MAXCOL) |
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1232 posptr = NULL; // continue until the NUL |
|
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1233 else |
|
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1234 { |
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1235 // Special check for an empty line, which can happen on exit, when |
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|
1236 // ml_get_buf() always returns an empty string. |
|
10835
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|
1237 if (*ptr == NUL) |
|
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1238 pos->col = 0; |
|
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1239 posptr = ptr + pos->col; |
|
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1240 if (has_mbyte) |
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1241 // always start on the first byte |
|
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1242 posptr -= (*mb_head_off)(line, posptr); |
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1243 } |
| 7 | 1244 |
| 1245 /* | |
| 1246 * This function is used very often, do some speed optimizations. | |
| 5995 | 1247 * When 'list', 'linebreak', 'showbreak' and 'breakindent' are not set |
| 1248 * use a simple loop. | |
| 7 | 1249 * Also use this when 'list' is set but tabs take their normal size. |
| 1250 */ | |
| 1251 if ((!wp->w_p_list || lcs_tab1 != NUL) | |
| 1252 #ifdef FEAT_LINEBREAK | |
|
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1253 && !wp->w_p_lbr && *get_showbreak_value(wp) == NUL && !wp->w_p_bri |
| 7 | 1254 #endif |
| 1255 ) | |
| 1256 { | |
| 1257 for (;;) | |
| 1258 { | |
| 1259 head = 0; | |
| 1260 c = *ptr; | |
|
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1261 // make sure we don't go past the end of the line |
| 7 | 1262 if (c == NUL) |
| 1263 { | |
|
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1264 incr = 1; // NUL at end of line only takes one column |
| 7 | 1265 break; |
| 1266 } | |
|
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1267 // A tab gets expanded, depending on the current column |
| 7 | 1268 if (c == TAB) |
|
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1269 #ifdef FEAT_VARTABS |
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1270 incr = tabstop_padding(vcol, ts, vts); |
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1271 #else |
| 7 | 1272 incr = ts - (vcol % ts); |
|
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1273 #endif |
| 7 | 1274 else |
| 1275 { | |
| 1276 if (has_mbyte) | |
| 1277 { | |
|
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1278 // For utf-8, if the byte is >= 0x80, need to look at |
|
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|
1279 // further bytes to find the cell width. |
| 7 | 1280 if (enc_utf8 && c >= 0x80) |
| 1281 incr = utf_ptr2cells(ptr); | |
| 1282 else | |
|
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1283 incr = g_chartab[c] & CT_CELL_MASK; |
| 7 | 1284 |
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1285 // If a double-cell char doesn't fit at the end of a line |
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1286 // it wraps to the next line, it's like this char is three |
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1287 // cells wide. |
| 1546 | 1288 if (incr == 2 && wp->w_p_wrap && MB_BYTE2LEN(*ptr) > 1 |
| 1289 && in_win_border(wp, vcol)) | |
| 7 | 1290 { |
| 1291 ++incr; | |
| 1292 head = 1; | |
| 1293 } | |
| 1294 } | |
| 1295 else | |
|
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1296 incr = g_chartab[c] & CT_CELL_MASK; |
| 7 | 1297 } |
| 1298 | |
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1299 if (posptr != NULL && ptr >= posptr) // character at pos->col |
| 7 | 1300 break; |
| 1301 | |
| 1302 vcol += incr; | |
|
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1303 MB_PTR_ADV(ptr); |
| 7 | 1304 } |
| 1305 } | |
| 1306 else | |
| 1307 { | |
| 1308 for (;;) | |
| 1309 { | |
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1310 // A tab gets expanded, depending on the current column |
| 7 | 1311 head = 0; |
| 5995 | 1312 incr = win_lbr_chartabsize(wp, line, ptr, vcol, &head); |
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1313 // make sure we don't go past the end of the line |
| 7 | 1314 if (*ptr == NUL) |
| 1315 { | |
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1316 incr = 1; // NUL at end of line only takes one column |
| 7 | 1317 break; |
| 1318 } | |
| 1319 | |
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1320 if (posptr != NULL && ptr >= posptr) // character at pos->col |
| 7 | 1321 break; |
| 1322 | |
| 1323 vcol += incr; | |
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1324 MB_PTR_ADV(ptr); |
| 7 | 1325 } |
| 1326 } | |
| 1327 if (start != NULL) | |
| 1328 *start = vcol + head; | |
| 1329 if (end != NULL) | |
| 1330 *end = vcol + incr - 1; | |
| 1331 if (cursor != NULL) | |
| 1332 { | |
| 1333 if (*ptr == TAB | |
| 1334 && (State & NORMAL) | |
| 1335 && !wp->w_p_list | |
| 1336 && !virtual_active() | |
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1337 && !(VIsual_active |
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1338 && (*p_sel == 'e' || LTOREQ_POS(*pos, VIsual))) |
| 7 | 1339 ) |
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1340 *cursor = vcol + incr - 1; // cursor at end |
| 7 | 1341 else |
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1342 *cursor = vcol + head; // cursor at start |
| 7 | 1343 } |
| 1344 } | |
| 1345 | |
| 1346 /* | |
| 1347 * Get virtual cursor column in the current window, pretending 'list' is off. | |
| 1348 */ | |
| 1349 colnr_T | |
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1350 getvcol_nolist(pos_T *posp) |
| 7 | 1351 { |
| 1352 int list_save = curwin->w_p_list; | |
| 1353 colnr_T vcol; | |
| 1354 | |
| 1355 curwin->w_p_list = FALSE; | |
|
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1356 if (posp->coladd) |
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1357 getvvcol(curwin, posp, NULL, &vcol, NULL); |
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1358 else |
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1359 getvcol(curwin, posp, NULL, &vcol, NULL); |
| 7 | 1360 curwin->w_p_list = list_save; |
| 1361 return vcol; | |
| 1362 } | |
| 1363 | |
| 1364 /* | |
| 1365 * Get virtual column in virtual mode. | |
| 1366 */ | |
| 1367 void | |
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1368 getvvcol( |
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1369 win_T *wp, |
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1370 pos_T *pos, |
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1371 colnr_T *start, |
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1372 colnr_T *cursor, |
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1373 colnr_T *end) |
| 7 | 1374 { |
| 1375 colnr_T col; | |
| 1376 colnr_T coladd; | |
| 1377 colnr_T endadd; | |
| 1378 char_u *ptr; | |
| 1379 | |
| 1380 if (virtual_active()) | |
| 1381 { | |
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1382 // For virtual mode, only want one value |
| 7 | 1383 getvcol(wp, pos, &col, NULL, NULL); |
| 1384 | |
| 1385 coladd = pos->coladd; | |
| 1386 endadd = 0; | |
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1387 // Cannot put the cursor on part of a wide character. |
| 7 | 1388 ptr = ml_get_buf(wp->w_buffer, pos->lnum, FALSE); |
| 1869 | 1389 if (pos->col < (colnr_T)STRLEN(ptr)) |
| 7 | 1390 { |
| 1391 int c = (*mb_ptr2char)(ptr + pos->col); | |
| 1392 | |
| 1393 if (c != TAB && vim_isprintc(c)) | |
| 1394 { | |
| 1869 | 1395 endadd = (colnr_T)(char2cells(c) - 1); |
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1396 if (coladd > endadd) // past end of line |
| 557 | 1397 endadd = 0; |
| 7 | 1398 else |
| 1399 coladd = 0; | |
| 1400 } | |
| 1401 } | |
| 1402 col += coladd; | |
| 1403 if (start != NULL) | |
| 1404 *start = col; | |
| 1405 if (cursor != NULL) | |
| 1406 *cursor = col; | |
| 1407 if (end != NULL) | |
| 1408 *end = col + endadd; | |
| 1409 } | |
| 1410 else | |
| 1411 getvcol(wp, pos, start, cursor, end); | |
| 1412 } | |
| 1413 | |
| 1414 /* | |
| 1415 * Get the leftmost and rightmost virtual column of pos1 and pos2. | |
| 1416 * Used for Visual block mode. | |
| 1417 */ | |
| 1418 void | |
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1419 getvcols( |
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1420 win_T *wp, |
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1421 pos_T *pos1, |
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1422 pos_T *pos2, |
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1423 colnr_T *left, |
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1424 colnr_T *right) |
| 7 | 1425 { |
| 1426 colnr_T from1, from2, to1, to2; | |
| 1427 | |
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1428 if (LT_POSP(pos1, pos2)) |
| 7 | 1429 { |
| 1430 getvvcol(wp, pos1, &from1, NULL, &to1); | |
| 1431 getvvcol(wp, pos2, &from2, NULL, &to2); | |
| 1432 } | |
| 1433 else | |
| 1434 { | |
| 1435 getvvcol(wp, pos2, &from1, NULL, &to1); | |
| 1436 getvvcol(wp, pos1, &from2, NULL, &to2); | |
| 1437 } | |
| 1438 if (from2 < from1) | |
| 1439 *left = from2; | |
| 1440 else | |
| 1441 *left = from1; | |
| 1442 if (to2 > to1) | |
| 1443 { | |
| 1444 if (*p_sel == 'e' && from2 - 1 >= to1) | |
| 1445 *right = from2 - 1; | |
| 1446 else | |
| 1447 *right = to2; | |
| 1448 } | |
| 1449 else | |
| 1450 *right = to1; | |
| 1451 } | |
| 1452 | |
| 1453 /* | |
| 1454 * skipwhite: skip over ' ' and '\t'. | |
| 1455 */ | |
| 1456 char_u * | |
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1457 skipwhite(char_u *q) |
| 7 | 1458 { |
| 1687 | 1459 char_u *p = q; |
| 1460 | |
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1461 while (VIM_ISWHITE(*p)) // skip to next non-white |
| 7 | 1462 ++p; |
| 1463 return p; | |
| 1464 } | |
| 1465 | |
| 1466 /* | |
|
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1467 * getwhitecols: return the number of whitespace |
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1468 * columns (bytes) at the start of a given line |
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1469 */ |
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1470 int |
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1471 getwhitecols_curline() |
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1472 { |
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1473 return getwhitecols(ml_get_curline()); |
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1474 } |
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1475 |
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1476 int |
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1477 getwhitecols(char_u *p) |
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1478 { |
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1479 return skipwhite(p) - p; |
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1480 } |
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1481 |
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1482 /* |
| 293 | 1483 * skip over digits |
| 7 | 1484 */ |
| 1485 char_u * | |
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1486 skipdigits(char_u *q) |
| 7 | 1487 { |
| 1687 | 1488 char_u *p = q; |
| 1489 | |
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1490 while (VIM_ISDIGIT(*p)) // skip to next non-digit |
| 7 | 1491 ++p; |
| 1492 return p; | |
| 1493 } | |
| 1494 | |
| 741 | 1495 #if defined(FEAT_SYN_HL) || defined(FEAT_SPELL) || defined(PROTO) |
| 301 | 1496 /* |
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1497 * skip over binary digits |
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1498 */ |
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1499 char_u * |
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1500 skipbin(char_u *q) |
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1501 { |
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1502 char_u *p = q; |
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1503 |
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1504 while (vim_isbdigit(*p)) // skip to next non-digit |
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1505 ++p; |
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1506 return p; |
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1507 } |
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1508 |
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1509 /* |
| 301 | 1510 * skip over digits and hex characters |
| 1511 */ | |
| 1512 char_u * | |
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1513 skiphex(char_u *q) |
| 301 | 1514 { |
| 1687 | 1515 char_u *p = q; |
| 1516 | |
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1517 while (vim_isxdigit(*p)) // skip to next non-digit |
| 301 | 1518 ++p; |
| 1519 return p; | |
| 1520 } | |
| 1521 #endif | |
| 1522 | |
| 293 | 1523 /* |
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1524 * skip to bin digit (or NUL after the string) |
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1525 */ |
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1526 char_u * |
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1527 skiptobin(char_u *q) |
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1528 { |
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1529 char_u *p = q; |
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1530 |
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1531 while (*p != NUL && !vim_isbdigit(*p)) // skip to next digit |
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1532 ++p; |
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1533 return p; |
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1534 } |
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1535 |
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1536 /* |
| 293 | 1537 * skip to digit (or NUL after the string) |
| 1538 */ | |
| 1539 char_u * | |
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1540 skiptodigit(char_u *q) |
| 293 | 1541 { |
| 1687 | 1542 char_u *p = q; |
| 1543 | |
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1544 while (*p != NUL && !VIM_ISDIGIT(*p)) // skip to next digit |
| 293 | 1545 ++p; |
| 1546 return p; | |
| 1547 } | |
| 1548 | |
| 1549 /* | |
| 1550 * skip to hex character (or NUL after the string) | |
| 1551 */ | |
| 1552 char_u * | |
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1553 skiptohex(char_u *q) |
| 293 | 1554 { |
| 1687 | 1555 char_u *p = q; |
| 1556 | |
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1557 while (*p != NUL && !vim_isxdigit(*p)) // skip to next digit |
| 293 | 1558 ++p; |
| 1559 return p; | |
| 1560 } | |
| 1561 | |
| 7 | 1562 /* |
| 1563 * Variant of isdigit() that can handle characters > 0x100. | |
| 1564 * We don't use isdigit() here, because on some systems it also considers | |
| 1565 * superscript 1 to be a digit. | |
| 1566 * Use the VIM_ISDIGIT() macro for simple arguments. | |
| 1567 */ | |
| 1568 int | |
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1569 vim_isdigit(int c) |
| 7 | 1570 { |
| 1571 return (c >= '0' && c <= '9'); | |
| 1572 } | |
| 1573 | |
| 1574 /* | |
| 1575 * Variant of isxdigit() that can handle characters > 0x100. | |
| 1576 * We don't use isxdigit() here, because on some systems it also considers | |
| 1577 * superscript 1 to be a digit. | |
| 1578 */ | |
| 1579 int | |
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1580 vim_isxdigit(int c) |
| 7 | 1581 { |
| 1582 return (c >= '0' && c <= '9') | |
| 1583 || (c >= 'a' && c <= 'f') | |
| 1584 || (c >= 'A' && c <= 'F'); | |
| 1585 } | |
| 1586 | |
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1587 /* |
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1588 * Corollary of vim_isdigit and vim_isxdigit() that can handle |
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1589 * characters > 0x100. |
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1590 */ |
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1591 int |
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1592 vim_isbdigit(int c) |
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1593 { |
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1594 return (c == '0' || c == '1'); |
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1595 } |
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1596 |
|
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1597 static int |
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1598 vim_isodigit(int c) |
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1599 { |
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1600 return (c >= '0' && c <= '7'); |
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1601 } |
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1602 |
| 492 | 1603 /* |
| 1604 * Vim's own character class functions. These exist because many library | |
| 1605 * islower()/toupper() etc. do not work properly: they crash when used with | |
| 1606 * invalid values or can't handle latin1 when the locale is C. | |
| 1607 * Speed is most important here. | |
| 1608 */ | |
| 1609 #define LATIN1LOWER 'l' | |
| 1610 #define LATIN1UPPER 'U' | |
| 1611 | |
| 497 | 1612 static char_u latin1flags[257] = " UUUUUUUUUUUUUUUUUUUUUUUUUU llllllllllllllllllllllllll UUUUUUUUUUUUUUUUUUUUUUU UUUUUUUllllllllllllllllllllllll llllllll"; |
| 3533 | 1613 static char_u latin1upper[257] = " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`ABCDEFGHIJKLMNOPQRSTUVWXYZ{|}~\x7f\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xf7\xd8\xd9\xda\xdb\xdc\xdd\xde\xff"; |
| 1614 static char_u latin1lower[257] = " !\"#$%&'()*+,-./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 | 1615 |
| 1616 int | |
|
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1617 vim_islower(int c) |
| 492 | 1618 { |
| 1619 if (c <= '@') | |
| 1620 return FALSE; | |
| 1621 if (c >= 0x80) | |
| 1622 { | |
| 1623 if (enc_utf8) | |
| 1624 return utf_islower(c); | |
| 1625 if (c >= 0x100) | |
| 1626 { | |
| 1627 #ifdef HAVE_ISWLOWER | |
| 1628 if (has_mbyte) | |
| 1629 return iswlower(c); | |
| 1630 #endif | |
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1631 // islower() can't handle these chars and may crash |
| 492 | 1632 return FALSE; |
| 1633 } | |
| 1634 if (enc_latin1like) | |
| 1635 return (latin1flags[c] & LATIN1LOWER) == LATIN1LOWER; | |
| 1636 } | |
| 1637 return islower(c); | |
| 1638 } | |
| 1639 | |
| 1640 int | |
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1641 vim_isupper(int c) |
| 492 | 1642 { |
| 1643 if (c <= '@') | |
| 1644 return FALSE; | |
| 1645 if (c >= 0x80) | |
| 1646 { | |
| 1647 if (enc_utf8) | |
| 1648 return utf_isupper(c); | |
| 1649 if (c >= 0x100) | |
| 1650 { | |
| 1651 #ifdef HAVE_ISWUPPER | |
| 1652 if (has_mbyte) | |
| 1653 return iswupper(c); | |
| 1654 #endif | |
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1655 // islower() can't handle these chars and may crash |
| 492 | 1656 return FALSE; |
| 1657 } | |
| 1658 if (enc_latin1like) | |
| 1659 return (latin1flags[c] & LATIN1UPPER) == LATIN1UPPER; | |
| 1660 } | |
| 1661 return isupper(c); | |
| 1662 } | |
| 1663 | |
| 1664 int | |
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1665 vim_toupper(int c) |
| 492 | 1666 { |
| 1667 if (c <= '@') | |
| 1668 return c; | |
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1669 if (c >= 0x80 || !(cmp_flags & CMP_KEEPASCII)) |
| 492 | 1670 { |
| 1671 if (enc_utf8) | |
| 1672 return utf_toupper(c); | |
| 1673 if (c >= 0x100) | |
| 1674 { | |
| 1675 #ifdef HAVE_TOWUPPER | |
| 1676 if (has_mbyte) | |
| 1677 return towupper(c); | |
| 1678 #endif | |
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1679 // toupper() can't handle these chars and may crash |
| 492 | 1680 return c; |
| 1681 } | |
| 1682 if (enc_latin1like) | |
| 1683 return latin1upper[c]; | |
| 1684 } | |
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1685 if (c < 0x80 && (cmp_flags & CMP_KEEPASCII)) |
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1686 return TOUPPER_ASC(c); |
| 492 | 1687 return TOUPPER_LOC(c); |
| 1688 } | |
| 1689 | |
| 1690 int | |
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1691 vim_tolower(int c) |
| 492 | 1692 { |
| 1693 if (c <= '@') | |
| 1694 return c; | |
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1695 if (c >= 0x80 || !(cmp_flags & CMP_KEEPASCII)) |
| 492 | 1696 { |
| 1697 if (enc_utf8) | |
| 1698 return utf_tolower(c); | |
| 1699 if (c >= 0x100) | |
| 1700 { | |
| 1701 #ifdef HAVE_TOWLOWER | |
| 1702 if (has_mbyte) | |
| 1703 return towlower(c); | |
| 1704 #endif | |
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1705 // tolower() can't handle these chars and may crash |
| 492 | 1706 return c; |
| 1707 } | |
| 1708 if (enc_latin1like) | |
| 1709 return latin1lower[c]; | |
| 1710 } | |
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1711 if (c < 0x80 && (cmp_flags & CMP_KEEPASCII)) |
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1712 return TOLOWER_ASC(c); |
| 492 | 1713 return TOLOWER_LOC(c); |
| 1714 } | |
| 1715 | |
| 7 | 1716 /* |
| 1717 * skiptowhite: skip over text until ' ' or '\t' or NUL. | |
| 1718 */ | |
| 1719 char_u * | |
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1720 skiptowhite(char_u *p) |
| 7 | 1721 { |
| 1722 while (*p != ' ' && *p != '\t' && *p != NUL) | |
| 1723 ++p; | |
| 1724 return p; | |
| 1725 } | |
| 1726 | |
| 1727 /* | |
| 1728 * skiptowhite_esc: Like skiptowhite(), but also skip escaped chars | |
| 1729 */ | |
| 1730 char_u * | |
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1731 skiptowhite_esc(char_u *p) |
| 7 | 1732 { |
| 1733 while (*p != ' ' && *p != '\t' && *p != NUL) | |
| 1734 { | |
| 1735 if ((*p == '\\' || *p == Ctrl_V) && *(p + 1) != NUL) | |
| 1736 ++p; | |
| 1737 ++p; | |
| 1738 } | |
| 1739 return p; | |
| 1740 } | |
| 1741 | |
| 1742 /* | |
| 1743 * Getdigits: Get a number from a string and skip over it. | |
| 1744 * Note: the argument is a pointer to a char_u pointer! | |
| 1745 */ | |
| 1746 long | |
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1747 getdigits(char_u **pp) |
| 7 | 1748 { |
| 1749 char_u *p; | |
| 1750 long retval; | |
| 1751 | |
| 1752 p = *pp; | |
| 1753 retval = atol((char *)p); | |
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|
1754 if (*p == '-') // skip negative sign |
| 7 | 1755 ++p; |
|
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diff
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|
1756 p = skipdigits(p); // skip to next non-digit |
| 7 | 1757 *pp = p; |
| 1758 return retval; | |
| 1759 } | |
| 1760 | |
| 1761 /* | |
| 1762 * Return TRUE if "lbuf" is empty or only contains blanks. | |
| 1763 */ | |
| 1764 int | |
|
7817
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7799
diff
changeset
|
1765 vim_isblankline(char_u *lbuf) |
| 7 | 1766 { |
| 1767 char_u *p; | |
| 1768 | |
| 1769 p = skipwhite(lbuf); | |
| 1770 return (*p == NUL || *p == '\r' || *p == '\n'); | |
| 1771 } | |
| 1772 | |
| 1773 /* | |
| 1774 * Convert a string into a long and/or unsigned long, taking care of | |
|
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diff
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|
1775 * hexadecimal, octal, and binary numbers. Accepts a '-' sign. |
|
ad432f8f68fb
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diff
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|
1776 * If "prep" is not NULL, returns a flag to indicate the type of the number: |
| 7 | 1777 * 0 decimal |
| 1778 * '0' octal | |
|
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|
1779 * 'O' octal |
|
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|
1780 * 'o' octal |
|
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|
1781 * 'B' bin |
|
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diff
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|
1782 * 'b' bin |
| 7 | 1783 * 'X' hex |
| 1784 * 'x' hex | |
| 1785 * If "len" is not NULL, the length of the number in characters is returned. | |
| 1786 * If "nptr" is not NULL, the signed result is returned in it. | |
| 1787 * If "unptr" is not NULL, the unsigned result is returned in it. | |
|
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|
1788 * If "what" contains STR2NR_BIN recognize binary numbers |
|
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|
1789 * If "what" contains STR2NR_OCT recognize octal numbers |
|
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|
1790 * If "what" contains STR2NR_HEX recognize hex numbers |
|
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|
1791 * If "what" contains STR2NR_FORCE always assume bin/oct/hex. |
|
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|
1792 * If "what" contains STR2NR_QUOTE ignore embedded single quotes |
|
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|
1793 * If maxlen > 0, check at a maximum maxlen chars. |
|
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1794 * If strict is TRUE, check the number strictly. return *len = 0 if fail. |
| 7 | 1795 */ |
| 1796 void | |
|
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|
1797 vim_str2nr( |
|
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|
1798 char_u *start, |
|
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|
1799 int *prep, // return: type of number 0 = decimal, 'x' |
|
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1800 // or 'X' is hex, '0', 'o' or 'O' is octal, |
|
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|
1801 // 'b' or 'B' is bin |
|
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|
1802 int *len, // return: detected length of number |
|
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|
1803 int what, // what numbers to recognize |
|
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|
1804 varnumber_T *nptr, // return: signed result |
|
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|
1805 uvarnumber_T *unptr, // return: unsigned result |
|
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|
1806 int maxlen, // max length of string to check |
|
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|
1807 int strict) // check strictly |
| 7 | 1808 { |
| 1809 char_u *ptr = start; | |
|
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|
1810 int pre = 0; // default is decimal |
| 7 | 1811 int negative = FALSE; |
|
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|
1812 uvarnumber_T un = 0; |
| 39 | 1813 int n; |
| 7 | 1814 |
|
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|
1815 if (len != NULL) |
|
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|
1816 *len = 0; |
|
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|
1817 |
| 7 | 1818 if (ptr[0] == '-') |
| 1819 { | |
| 1820 negative = TRUE; | |
| 1821 ++ptr; | |
| 1822 } | |
| 1823 | |
|
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|
1824 // Recognize hex, octal, and bin. |
| 6927 | 1825 if (ptr[0] == '0' && ptr[1] != '8' && ptr[1] != '9' |
| 1826 && (maxlen == 0 || maxlen > 1)) | |
| 7 | 1827 { |
|
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|
1828 pre = ptr[1]; |
|
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|
1829 if ((what & STR2NR_HEX) |
|
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|
1830 && (pre == 'X' || pre == 'x') && vim_isxdigit(ptr[2]) |
|
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|
1831 && (maxlen == 0 || maxlen > 2)) |
|
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|
1832 // hexadecimal |
|
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1833 ptr += 2; |
|
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|
1834 else if ((what & STR2NR_BIN) |
|
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|
1835 && (pre == 'B' || pre == 'b') && vim_isbdigit(ptr[2]) |
|
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1836 && (maxlen == 0 || maxlen > 2)) |
|
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|
1837 // binary |
|
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|
1838 ptr += 2; |
|
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|
1839 else if ((what & STR2NR_OOCT) |
|
23533
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patch 8.2.2309: 0o777 not recognized as octal
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diff
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|
1840 && (pre == 'O' || pre == 'o') && vim_isodigit(ptr[2]) |
|
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1841 && (maxlen == 0 || maxlen > 2)) |
|
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|
1842 // octal with prefix "0o" |
|
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|
1843 ptr += 2; |
| 7 | 1844 else |
| 1845 { | |
|
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|
1846 // decimal or octal, default is decimal |
|
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|
1847 pre = 0; |
|
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|
1848 if (what & STR2NR_OCT) |
| 39 | 1849 { |
|
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|
1850 // Don't interpret "0", "08" or "0129" as octal. |
|
12704
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|
1851 for (n = 1; n != maxlen && VIM_ISDIGIT(ptr[n]); ++n) |
| 39 | 1852 { |
| 1853 if (ptr[n] > '7') | |
| 1854 { | |
|
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|
1855 pre = 0; // can't be octal |
| 39 | 1856 break; |
| 1857 } | |
|
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|
1858 pre = '0'; // assume octal |
| 39 | 1859 } |
| 1860 } | |
| 7 | 1861 } |
| 1862 } | |
| 1863 | |
|
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|
1864 // Do the conversion manually to avoid sscanf() quirks. |
| 6927 | 1865 n = 1; |
|
18082
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|
1866 if (pre == 'B' || pre == 'b' |
|
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|
1867 || ((what & STR2NR_BIN) && (what & STR2NR_FORCE))) |
|
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|
1868 { |
|
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|
1869 // bin |
|
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|
1870 if (pre != 0) |
|
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|
1871 n += 2; // skip over "0b" |
|
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|
1872 while ('0' <= *ptr && *ptr <= '1') |
|
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|
1873 { |
|
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|
1874 // avoid ubsan error for overflow |
|
14061
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patch 8.1.0048: vim_str2nr() does not handle numbers close to the maximum
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changeset
|
1875 if (un <= UVARNUM_MAX / 2) |
|
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diff
changeset
|
1876 un = 2 * un + (uvarnumber_T)(*ptr - '0'); |
|
10658
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|
1877 else |
|
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|
1878 un = UVARNUM_MAX; |
|
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|
1879 ++ptr; |
|
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|
1880 if (n++ == maxlen) |
|
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|
1881 break; |
|
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|
1882 if ((what & STR2NR_QUOTE) && *ptr == '\'' |
|
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|
1883 && '0' <= ptr[1] && ptr[1] <= '1') |
|
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|
1884 { |
|
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|
1885 ++ptr; |
|
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|
1886 if (n++ == maxlen) |
|
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|
1887 break; |
|
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|
1888 } |
|
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1889 } |
|
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|
1890 } |
|
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|
1891 else if (pre == 'O' || pre == 'o' || |
|
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|
1892 pre == '0' || ((what & STR2NR_OCT) && (what & STR2NR_FORCE))) |
| 7 | 1893 { |
|
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changeset
|
1894 // octal |
|
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1895 if (pre != 0 && pre != '0') |
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1896 n += 2; // skip over "0o" |
| 293 | 1897 while ('0' <= *ptr && *ptr <= '7') |
| 7 | 1898 { |
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1899 // avoid ubsan error for overflow |
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1900 if (un <= UVARNUM_MAX / 8) |
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1901 un = 8 * un + (uvarnumber_T)(*ptr - '0'); |
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1902 else |
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1903 un = UVARNUM_MAX; |
| 293 | 1904 ++ptr; |
| 6927 | 1905 if (n++ == maxlen) |
| 1906 break; | |
|
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1907 if ((what & STR2NR_QUOTE) && *ptr == '\'' |
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1908 && '0' <= ptr[1] && ptr[1] <= '7') |
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1909 { |
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1910 ++ptr; |
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1911 if (n++ == maxlen) |
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1912 break; |
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1913 } |
| 7 | 1914 } |
| 293 | 1915 } |
|
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1916 else if (pre != 0 || ((what & STR2NR_HEX) && (what & STR2NR_FORCE))) |
| 293 | 1917 { |
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1918 // hex |
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1919 if (pre != 0) |
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1920 n += 2; // skip over "0x" |
| 293 | 1921 while (vim_isxdigit(*ptr)) |
| 7 | 1922 { |
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1923 // avoid ubsan error for overflow |
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1924 if (un <= UVARNUM_MAX / 16) |
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1925 un = 16 * un + (uvarnumber_T)hex2nr(*ptr); |
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1926 else |
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1927 un = UVARNUM_MAX; |
| 293 | 1928 ++ptr; |
| 6927 | 1929 if (n++ == maxlen) |
| 1930 break; | |
|
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1931 if ((what & STR2NR_QUOTE) && *ptr == '\'' && vim_isxdigit(ptr[1])) |
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1932 { |
|
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1933 ++ptr; |
|
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1934 if (n++ == maxlen) |
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1935 break; |
|
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1936 } |
| 7 | 1937 } |
| 1938 } | |
| 1939 else | |
| 1940 { | |
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1941 // decimal |
| 7 | 1942 while (VIM_ISDIGIT(*ptr)) |
| 1943 { | |
|
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1944 uvarnumber_T digit = (uvarnumber_T)(*ptr - '0'); |
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1945 |
|
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1946 // avoid ubsan error for overflow |
|
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1947 if (un < UVARNUM_MAX / 10 |
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1948 || (un == UVARNUM_MAX / 10 && digit <= UVARNUM_MAX % 10)) |
|
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1949 un = 10 * un + digit; |
|
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1950 else |
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1951 un = UVARNUM_MAX; |
| 7 | 1952 ++ptr; |
| 6927 | 1953 if (n++ == maxlen) |
| 1954 break; | |
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1955 if ((what & STR2NR_QUOTE) && *ptr == '\'' && VIM_ISDIGIT(ptr[1])) |
|
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1956 { |
|
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1957 ++ptr; |
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1958 if (n++ == maxlen) |
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1959 break; |
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1960 } |
| 7 | 1961 } |
| 1962 } | |
|
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1963 |
|
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1964 // Check for an alphanumeric character immediately following, that is |
|
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1965 // most likely a typo. |
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1966 if (strict && n - 1 != maxlen && ASCII_ISALNUM(*ptr)) |
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1967 return; |
| 7 | 1968 |
|
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1969 if (prep != NULL) |
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1970 *prep = pre; |
| 7 | 1971 if (len != NULL) |
| 1972 *len = (int)(ptr - start); | |
| 1973 if (nptr != NULL) | |
| 16 | 1974 { |
|
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1975 if (negative) // account for leading '-' for decimal numbers |
|
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1976 { |
|
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1977 // avoid ubsan error for overflow |
|
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1978 if (un > VARNUM_MAX) |
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1979 *nptr = VARNUM_MIN; |
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1980 else |
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1981 *nptr = -(varnumber_T)un; |
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1982 } |
| 16 | 1983 else |
|
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1984 { |
|
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1985 if (un > VARNUM_MAX) |
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1986 un = VARNUM_MAX; |
|
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1987 *nptr = (varnumber_T)un; |
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1988 } |
| 16 | 1989 } |
| 7 | 1990 if (unptr != NULL) |
| 1991 *unptr = un; | |
| 1992 } | |
| 1993 | |
| 1994 /* | |
| 1995 * Return the value of a single hex character. | |
| 1996 * Only valid when the argument is '0' - '9', 'A' - 'F' or 'a' - 'f'. | |
| 1997 */ | |
| 1998 int | |
|
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1999 hex2nr(int c) |
| 7 | 2000 { |
| 2001 if (c >= 'a' && c <= 'f') | |
| 2002 return c - 'a' + 10; | |
| 2003 if (c >= 'A' && c <= 'F') | |
| 2004 return c - 'A' + 10; | |
| 2005 return c - '0'; | |
| 2006 } | |
| 2007 | |
|
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2008 #if defined(FEAT_TERMRESPONSE) || defined(FEAT_GUI_GTK) || defined(PROTO) |
| 7 | 2009 /* |
| 2010 * Convert two hex characters to a byte. | |
| 2011 * Return -1 if one of the characters is not hex. | |
| 2012 */ | |
| 2013 int | |
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2014 hexhex2nr(char_u *p) |
| 7 | 2015 { |
| 2016 if (!vim_isxdigit(p[0]) || !vim_isxdigit(p[1])) | |
| 2017 return -1; | |
| 2018 return (hex2nr(p[0]) << 4) + hex2nr(p[1]); | |
| 2019 } | |
| 2020 #endif | |
| 2021 | |
| 2022 /* | |
| 2023 * Return TRUE if "str" starts with a backslash that should be removed. | |
|
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changeset
|
2024 * For MS-DOS, MSWIN and OS/2 this is only done when the character after the |
| 7 | 2025 * backslash is not a normal file name character. |
| 2026 * '$' is a valid file name character, we don't remove the backslash before | |
| 2027 * it. This means it is not possible to use an environment variable after a | |
| 2028 * backslash. "C:\$VIM\doc" is taken literally, only "$VIM\doc" works. | |
| 2029 * Although "\ name" is valid, the backslash in "Program\ files" must be | |
| 2030 * removed. Assume a file name doesn't start with a space. | |
| 2031 * For multi-byte names, never remove a backslash before a non-ascii | |
| 2032 * character, assume that all multi-byte characters are valid file name | |
| 2033 * characters. | |
| 2034 */ | |
| 2035 int | |
|
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|
2036 rem_backslash(char_u *str) |
| 7 | 2037 { |
| 2038 #ifdef BACKSLASH_IN_FILENAME | |
| 2039 return (str[0] == '\\' | |
| 2040 && str[1] < 0x80 | |
| 2041 && (str[1] == ' ' | |
| 2042 || (str[1] != NUL | |
| 2043 && str[1] != '*' | |
| 2044 && str[1] != '?' | |
| 2045 && !vim_isfilec(str[1])))); | |
| 2046 #else | |
| 2047 return (str[0] == '\\' && str[1] != NUL); | |
| 2048 #endif | |
| 2049 } | |
| 2050 | |
| 2051 /* | |
| 2052 * Halve the number of backslashes in a file name argument. | |
| 2053 * For MS-DOS we only do this if the character after the backslash | |
| 2054 * is not a normal file character. | |
| 2055 */ | |
| 2056 void | |
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2057 backslash_halve(char_u *p) |
| 7 | 2058 { |
| 2059 for ( ; *p; ++p) | |
| 2060 if (rem_backslash(p)) | |
| 1621 | 2061 STRMOVE(p, p + 1); |
| 7 | 2062 } |
| 2063 | |
| 2064 /* | |
| 2065 * backslash_halve() plus save the result in allocated memory. | |
|
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2066 * However, returns "p" when out of memory. |
| 7 | 2067 */ |
| 2068 char_u * | |
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2069 backslash_halve_save(char_u *p) |
| 7 | 2070 { |
| 2071 char_u *res; | |
| 2072 | |
| 2073 res = vim_strsave(p); | |
| 2074 if (res == NULL) | |
| 2075 return p; | |
| 2076 backslash_halve(res); | |
| 2077 return res; | |
| 2078 } | |
| 2079 | |
| 2080 #if (defined(EBCDIC) && defined(FEAT_POSTSCRIPT)) || defined(PROTO) | |
| 2081 /* | |
| 2082 * Table for EBCDIC to ASCII conversion unashamedly taken from xxd.c! | |
| 2083 * The first 64 entries have been added to map control characters defined in | |
| 2084 * ascii.h | |
| 2085 */ | |
| 2086 static char_u ebcdic2ascii_tab[256] = | |
| 2087 { | |
| 2088 0000, 0001, 0002, 0003, 0004, 0011, 0006, 0177, | |
| 2089 0010, 0011, 0012, 0013, 0014, 0015, 0016, 0017, | |
| 2090 0020, 0021, 0022, 0023, 0024, 0012, 0010, 0027, | |
| 2091 0030, 0031, 0032, 0033, 0033, 0035, 0036, 0037, | |
| 2092 0040, 0041, 0042, 0043, 0044, 0045, 0046, 0047, | |
| 2093 0050, 0051, 0052, 0053, 0054, 0055, 0056, 0057, | |
| 2094 0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067, | |
| 2095 0070, 0071, 0072, 0073, 0074, 0075, 0076, 0077, | |
| 2096 0040, 0240, 0241, 0242, 0243, 0244, 0245, 0246, | |
| 2097 0247, 0250, 0325, 0056, 0074, 0050, 0053, 0174, | |
| 2098 0046, 0251, 0252, 0253, 0254, 0255, 0256, 0257, | |
| 2099 0260, 0261, 0041, 0044, 0052, 0051, 0073, 0176, | |
| 2100 0055, 0057, 0262, 0263, 0264, 0265, 0266, 0267, | |
| 2101 0270, 0271, 0313, 0054, 0045, 0137, 0076, 0077, | |
| 2102 0272, 0273, 0274, 0275, 0276, 0277, 0300, 0301, | |
| 2103 0302, 0140, 0072, 0043, 0100, 0047, 0075, 0042, | |
| 2104 0303, 0141, 0142, 0143, 0144, 0145, 0146, 0147, | |
| 2105 0150, 0151, 0304, 0305, 0306, 0307, 0310, 0311, | |
| 2106 0312, 0152, 0153, 0154, 0155, 0156, 0157, 0160, | |
| 2107 0161, 0162, 0136, 0314, 0315, 0316, 0317, 0320, | |
| 2108 0321, 0345, 0163, 0164, 0165, 0166, 0167, 0170, | |
| 2109 0171, 0172, 0322, 0323, 0324, 0133, 0326, 0327, | |
| 2110 0330, 0331, 0332, 0333, 0334, 0335, 0336, 0337, | |
| 2111 0340, 0341, 0342, 0343, 0344, 0135, 0346, 0347, | |
| 2112 0173, 0101, 0102, 0103, 0104, 0105, 0106, 0107, | |
| 2113 0110, 0111, 0350, 0351, 0352, 0353, 0354, 0355, | |
| 2114 0175, 0112, 0113, 0114, 0115, 0116, 0117, 0120, | |
| 2115 0121, 0122, 0356, 0357, 0360, 0361, 0362, 0363, | |
| 2116 0134, 0237, 0123, 0124, 0125, 0126, 0127, 0130, | |
| 2117 0131, 0132, 0364, 0365, 0366, 0367, 0370, 0371, | |
| 2118 0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067, | |
| 2119 0070, 0071, 0372, 0373, 0374, 0375, 0376, 0377 | |
| 2120 }; | |
| 2121 | |
| 2122 /* | |
| 2123 * Convert a buffer worth of characters from EBCDIC to ASCII. Only useful if | |
| 2124 * wanting 7-bit ASCII characters out the other end. | |
| 2125 */ | |
| 2126 void | |
|
7817
83861277e6a3
commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
7799
diff
changeset
|
2127 ebcdic2ascii(char_u *buffer, int len) |
| 7 | 2128 { |
| 2129 int i; | |
| 2130 | |
| 2131 for (i = 0; i < len; i++) | |
| 2132 buffer[i] = ebcdic2ascii_tab[buffer[i]]; | |
| 2133 } | |
| 2134 #endif |