Mercurial > vim
annotate src/charset.c @ 25085:619137b90a04
Added tag v8.2.3079 for changeset beff72446e2e8f90cd16b0652fb8463df2d9b744
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Wed, 30 Jun 2021 21:00:06 +0200 |
| parents | 661d15592d3c |
| children | 40b17deb294f |
| rev | line source |
|---|---|
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commit https://github.com/vim/vim/commit/edf3f97ae2af024708ebb4ac614227327033ca47
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1 /* vi:set ts=8 sts=4 sw=4 noet: |
| 7 | 2 * |
| 3 * VIM - Vi IMproved by Bram Moolenaar | |
| 4 * | |
| 5 * Do ":help uganda" in Vim to read copying and usage conditions. | |
| 6 * Do ":help credits" in Vim to see a list of people who contributed. | |
| 7 * See README.txt for an overview of the Vim source code. | |
| 8 */ | |
| 9 | |
| 10 #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); | |
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172 else if (has_mbyte) |
| 1955 | 173 c = mb_ptr2char_adv(&p); |
| 174 else | |
| 7 | 175 c = *p++; |
| 176 c2 = -1; | |
| 177 if (*p == '-' && p[1] != NUL) | |
| 178 { | |
| 179 ++p; | |
| 180 if (VIM_ISDIGIT(*p)) | |
| 181 c2 = getdigits(&p); | |
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182 else if (has_mbyte) |
| 1979 | 183 c2 = mb_ptr2char_adv(&p); |
| 184 else | |
| 7 | 185 c2 = *p++; |
| 186 } | |
| 1979 | 187 if (c <= 0 || c >= 256 || (c2 < c && c2 != -1) || c2 >= 256 |
| 7 | 188 || !(*p == NUL || *p == ',')) |
| 189 return FAIL; | |
| 190 | |
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191 if (c2 == -1) // not a range |
| 7 | 192 { |
| 193 /* | |
| 194 * A single '@' (not "@-@"): | |
| 195 * Decide on letters being ID/printable/keyword chars with | |
| 196 * standard function isalpha(). This takes care of locale for | |
| 197 * single-byte characters). | |
| 198 */ | |
| 199 if (c == '@') | |
| 200 { | |
| 201 do_isalpha = TRUE; | |
| 202 c = 1; | |
| 203 c2 = 255; | |
| 204 } | |
| 205 else | |
| 206 c2 = c; | |
| 207 } | |
| 208 while (c <= c2) | |
| 209 { | |
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210 // Use the MB_ functions here, because isalpha() doesn't |
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211 // work properly when 'encoding' is "latin1" and the locale is |
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212 // "C". |
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213 if (!do_isalpha || MB_ISLOWER(c) || MB_ISUPPER(c)) |
| 7 | 214 { |
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215 if (i == 0) // (re)set ID flag |
| 7 | 216 { |
| 217 if (tilde) | |
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218 g_chartab[c] &= ~CT_ID_CHAR; |
| 7 | 219 else |
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220 g_chartab[c] |= CT_ID_CHAR; |
| 7 | 221 } |
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222 else if (i == 1) // (re)set printable |
| 7 | 223 { |
| 224 if ((c < ' ' | |
| 225 #ifndef EBCDIC | |
| 226 || c > '~' | |
| 227 #endif | |
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228 // For double-byte we keep the cell width, so |
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229 // that we can detect it from the first byte. |
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230 ) && !(enc_dbcs && MB_BYTE2LEN(c) == 2)) |
| 7 | 231 { |
| 232 if (tilde) | |
| 233 { | |
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234 g_chartab[c] = (g_chartab[c] & ~CT_CELL_MASK) |
| 7 | 235 + ((dy_flags & DY_UHEX) ? 4 : 2); |
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236 g_chartab[c] &= ~CT_PRINT_CHAR; |
| 7 | 237 } |
| 238 else | |
| 239 { | |
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240 g_chartab[c] = (g_chartab[c] & ~CT_CELL_MASK) + 1; |
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241 g_chartab[c] |= CT_PRINT_CHAR; |
| 7 | 242 } |
| 243 } | |
| 244 } | |
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245 else if (i == 2) // (re)set fname flag |
| 7 | 246 { |
| 247 if (tilde) | |
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248 g_chartab[c] &= ~CT_FNAME_CHAR; |
| 7 | 249 else |
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250 g_chartab[c] |= CT_FNAME_CHAR; |
| 7 | 251 } |
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252 else // i == 3 (re)set keyword flag |
| 7 | 253 { |
| 254 if (tilde) | |
| 255 RESET_CHARTAB(buf, c); | |
| 256 else | |
| 257 SET_CHARTAB(buf, c); | |
| 258 } | |
| 259 } | |
| 260 ++c; | |
| 261 } | |
| 4096 | 262 |
| 263 c = *p; | |
| 7 | 264 p = skip_to_option_part(p); |
| 4096 | 265 if (c == ',' && *p == NUL) |
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266 // Trailing comma is not allowed. |
| 4096 | 267 return FAIL; |
| 7 | 268 } |
| 269 } | |
| 270 chartab_initialized = TRUE; | |
| 271 return OK; | |
| 272 } | |
| 273 | |
| 274 /* | |
| 275 * Translate any special characters in buf[bufsize] in-place. | |
| 276 * The result is a string with only printable characters, but if there is not | |
| 277 * enough room, not all characters will be translated. | |
| 278 */ | |
| 279 void | |
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280 trans_characters( |
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281 char_u *buf, |
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282 int bufsize) |
| 7 | 283 { |
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284 int len; // length of string needing translation |
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285 int room; // room in buffer after string |
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286 char_u *trs; // translated character |
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287 int trs_len; // length of trs[] |
| 7 | 288 |
| 289 len = (int)STRLEN(buf); | |
| 290 room = bufsize - len; | |
| 291 while (*buf != 0) | |
| 292 { | |
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293 // Assume a multi-byte character doesn't need translation. |
| 474 | 294 if (has_mbyte && (trs_len = (*mb_ptr2len)(buf)) > 1) |
| 7 | 295 len -= trs_len; |
| 296 else | |
| 297 { | |
| 298 trs = transchar_byte(*buf); | |
| 299 trs_len = (int)STRLEN(trs); | |
| 300 if (trs_len > 1) | |
| 301 { | |
| 302 room -= trs_len - 1; | |
| 303 if (room <= 0) | |
| 304 return; | |
| 305 mch_memmove(buf + trs_len, buf + 1, (size_t)len); | |
| 306 } | |
| 307 mch_memmove(buf, trs, (size_t)trs_len); | |
| 308 --len; | |
| 309 } | |
| 310 buf += trs_len; | |
| 311 } | |
| 312 } | |
| 313 | |
| 314 /* | |
| 315 * Translate a string into allocated memory, replacing special chars with | |
| 316 * printable chars. Returns NULL when out of memory. | |
| 317 */ | |
| 318 char_u * | |
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319 transstr(char_u *s) |
| 7 | 320 { |
| 321 char_u *res; | |
| 322 char_u *p; | |
| 323 int l, len, c; | |
| 324 char_u hexbuf[11]; | |
| 325 | |
| 326 if (has_mbyte) | |
| 327 { | |
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328 // Compute the length of the result, taking account of unprintable |
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329 // multi-byte characters. |
| 7 | 330 len = 0; |
| 331 p = s; | |
| 332 while (*p != NUL) | |
| 333 { | |
| 474 | 334 if ((l = (*mb_ptr2len)(p)) > 1) |
| 7 | 335 { |
| 336 c = (*mb_ptr2char)(p); | |
| 337 p += l; | |
| 338 if (vim_isprintc(c)) | |
| 339 len += l; | |
| 340 else | |
| 341 { | |
| 342 transchar_hex(hexbuf, c); | |
| 835 | 343 len += (int)STRLEN(hexbuf); |
| 7 | 344 } |
| 345 } | |
| 346 else | |
| 347 { | |
| 348 l = byte2cells(*p++); | |
| 349 if (l > 0) | |
| 350 len += l; | |
| 351 else | |
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352 len += 4; // illegal byte sequence |
| 7 | 353 } |
| 354 } | |
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355 res = alloc(len + 1); |
| 7 | 356 } |
| 357 else | |
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358 res = alloc(vim_strsize(s) + 1); |
| 7 | 359 if (res != NULL) |
| 360 { | |
| 361 *res = NUL; | |
| 362 p = s; | |
| 363 while (*p != NUL) | |
| 364 { | |
| 474 | 365 if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1) |
| 7 | 366 { |
| 367 c = (*mb_ptr2char)(p); | |
| 368 if (vim_isprintc(c)) | |
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369 STRNCAT(res, p, l); // append printable multi-byte char |
| 7 | 370 else |
| 371 transchar_hex(res + STRLEN(res), c); | |
| 372 p += l; | |
| 373 } | |
| 374 else | |
| 375 STRCAT(res, transchar_byte(*p++)); | |
| 376 } | |
| 377 } | |
| 378 return res; | |
| 379 } | |
| 380 | |
| 381 /* | |
| 221 | 382 * Convert the string "str[orglen]" to do ignore-case comparing. Uses the |
| 383 * current locale. | |
| 130 | 384 * When "buf" is NULL returns an allocated string (NULL for out-of-memory). |
| 385 * Otherwise puts the result in "buf[buflen]". | |
| 7 | 386 */ |
| 387 char_u * | |
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388 str_foldcase( |
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389 char_u *str, |
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390 int orglen, |
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391 char_u *buf, |
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392 int buflen) |
| 7 | 393 { |
| 394 garray_T ga; | |
| 395 int i; | |
| 130 | 396 int len = orglen; |
| 7 | 397 |
| 398 #define GA_CHAR(i) ((char_u *)ga.ga_data)[i] | |
| 399 #define GA_PTR(i) ((char_u *)ga.ga_data + i) | |
| 130 | 400 #define STR_CHAR(i) (buf == NULL ? GA_CHAR(i) : buf[i]) |
| 401 #define STR_PTR(i) (buf == NULL ? GA_PTR(i) : buf + i) | |
| 7 | 402 |
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403 // Copy "str" into "buf" or allocated memory, unmodified. |
| 130 | 404 if (buf == NULL) |
| 405 { | |
| 406 ga_init2(&ga, 1, 10); | |
| 407 if (ga_grow(&ga, len + 1) == FAIL) | |
| 408 return NULL; | |
| 409 mch_memmove(ga.ga_data, str, (size_t)len); | |
| 410 ga.ga_len = len; | |
| 411 } | |
| 412 else | |
| 413 { | |
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414 if (len >= buflen) // Ugly! |
| 130 | 415 len = buflen - 1; |
| 416 mch_memmove(buf, str, (size_t)len); | |
| 417 } | |
| 418 if (buf == NULL) | |
| 419 GA_CHAR(len) = NUL; | |
| 420 else | |
| 421 buf[len] = NUL; | |
| 7 | 422 |
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423 // Make each character lower case. |
| 7 | 424 i = 0; |
| 130 | 425 while (STR_CHAR(i) != NUL) |
| 7 | 426 { |
| 130 | 427 if (enc_utf8 || (has_mbyte && MB_BYTE2LEN(STR_CHAR(i)) > 1)) |
| 7 | 428 { |
| 429 if (enc_utf8) | |
| 430 { | |
| 1654 | 431 int c = utf_ptr2char(STR_PTR(i)); |
| 3263 | 432 int olen = utf_ptr2len(STR_PTR(i)); |
| 1654 | 433 int lc = utf_tolower(c); |
| 7 | 434 |
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435 // Only replace the character when it is not an invalid |
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436 // sequence (ASCII character or more than one byte) and |
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437 // utf_tolower() doesn't return the original character. |
| 3263 | 438 if ((c < 0x80 || olen > 1) && c != lc) |
| 7 | 439 { |
| 3263 | 440 int nlen = utf_char2len(lc); |
| 7 | 441 |
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442 // If the byte length changes need to shift the following |
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443 // characters forward or backward. |
| 3263 | 444 if (olen != nlen) |
| 7 | 445 { |
| 3263 | 446 if (nlen > olen) |
| 130 | 447 { |
| 3263 | 448 if (buf == NULL |
| 449 ? ga_grow(&ga, nlen - olen + 1) == FAIL | |
| 450 : len + nlen - olen >= buflen) | |
| 7 | 451 { |
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452 // out of memory, keep old char |
| 7 | 453 lc = c; |
| 3263 | 454 nlen = olen; |
| 7 | 455 } |
| 130 | 456 } |
| 3263 | 457 if (olen != nlen) |
| 7 | 458 { |
| 130 | 459 if (buf == NULL) |
| 460 { | |
| 3263 | 461 STRMOVE(GA_PTR(i) + nlen, GA_PTR(i) + olen); |
| 462 ga.ga_len += nlen - olen; | |
| 130 | 463 } |
| 464 else | |
| 465 { | |
| 3263 | 466 STRMOVE(buf + i + nlen, buf + i + olen); |
| 467 len += nlen - olen; | |
| 130 | 468 } |
| 7 | 469 } |
| 470 } | |
| 130 | 471 (void)utf_char2bytes(lc, STR_PTR(i)); |
| 7 | 472 } |
| 473 } | |
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474 // skip to next multi-byte char |
| 474 | 475 i += (*mb_ptr2len)(STR_PTR(i)); |
| 7 | 476 } |
| 477 else | |
| 478 { | |
| 130 | 479 if (buf == NULL) |
| 480 GA_CHAR(i) = TOLOWER_LOC(GA_CHAR(i)); | |
| 481 else | |
| 482 buf[i] = TOLOWER_LOC(buf[i]); | |
| 7 | 483 ++i; |
| 484 } | |
| 485 } | |
| 486 | |
| 130 | 487 if (buf == NULL) |
| 488 return (char_u *)ga.ga_data; | |
| 489 return buf; | |
| 7 | 490 } |
| 491 | |
| 492 /* | |
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493 * Catch 22: g_chartab[] can't be initialized before the options are |
| 7 | 494 * initialized, and initializing options may cause transchar() to be called! |
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495 * When chartab_initialized == FALSE don't use g_chartab[]. |
| 7 | 496 * Does NOT work for multi-byte characters, c must be <= 255. |
| 497 * Also doesn't work for the first byte of a multi-byte, "c" must be a | |
| 498 * character! | |
| 499 */ | |
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500 static char_u transchar_charbuf[7]; |
| 7 | 501 |
| 502 char_u * | |
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503 transchar(int c) |
| 7 | 504 { |
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505 return transchar_buf(curbuf, c); |
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506 } |
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507 |
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508 char_u * |
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509 transchar_buf(buf_T *buf, int c) |
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510 { |
| 7 | 511 int i; |
| 512 | |
| 513 i = 0; | |
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514 if (IS_SPECIAL(c)) // special key code, display as ~@ char |
| 7 | 515 { |
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516 transchar_charbuf[0] = '~'; |
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517 transchar_charbuf[1] = '@'; |
| 7 | 518 i = 2; |
| 519 c = K_SECOND(c); | |
| 520 } | |
| 521 | |
| 522 if ((!chartab_initialized && ( | |
| 523 #ifdef EBCDIC | |
| 524 (c >= 64 && c < 255) | |
| 525 #else | |
| 526 (c >= ' ' && c <= '~') | |
| 527 #endif | |
| 528 )) || (c < 256 && vim_isprintc_strict(c))) | |
| 529 { | |
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530 // printable character |
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531 transchar_charbuf[i] = c; |
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532 transchar_charbuf[i + 1] = NUL; |
| 7 | 533 } |
| 534 else | |
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535 transchar_nonprint(buf, transchar_charbuf + i, c); |
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536 return transchar_charbuf; |
| 7 | 537 } |
| 538 | |
| 539 /* | |
| 540 * Like transchar(), but called with a byte instead of a character. Checks | |
| 541 * for an illegal UTF-8 byte. | |
| 542 */ | |
| 543 char_u * | |
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544 transchar_byte(int c) |
| 7 | 545 { |
| 546 if (enc_utf8 && c >= 0x80) | |
| 547 { | |
|
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548 transchar_nonprint(curbuf, transchar_charbuf, c); |
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549 return transchar_charbuf; |
| 7 | 550 } |
| 551 return transchar(c); | |
| 552 } | |
| 553 | |
| 554 /* | |
| 555 * Convert non-printable character to two or more printable characters in | |
|
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556 * "buf[]". "charbuf" needs to be able to hold five bytes. |
| 7 | 557 * Does NOT work for multi-byte characters, c must be <= 255. |
| 558 */ | |
| 559 void | |
|
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560 transchar_nonprint(buf_T *buf, char_u *charbuf, int c) |
| 7 | 561 { |
| 562 if (c == NL) | |
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563 c = NUL; // we use newline in place of a NUL |
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564 else if (c == CAR && get_fileformat(buf) == EOL_MAC) |
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565 c = NL; // we use CR in place of NL in this case |
| 7 | 566 |
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567 if (dy_flags & DY_UHEX) // 'display' has "uhex" |
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568 transchar_hex(charbuf, c); |
| 7 | 569 |
| 570 #ifdef EBCDIC | |
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571 // For EBCDIC only the characters 0-63 and 255 are not printable |
| 7 | 572 else if (CtrlChar(c) != 0 || c == DEL) |
| 573 #else | |
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574 else if (c <= 0x7f) // 0x00 - 0x1f and 0x7f |
| 7 | 575 #endif |
| 576 { | |
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577 charbuf[0] = '^'; |
| 7 | 578 #ifdef EBCDIC |
| 579 if (c == DEL) | |
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580 charbuf[1] = '?'; // DEL displayed as ^? |
| 7 | 581 else |
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582 charbuf[1] = CtrlChar(c); |
| 7 | 583 #else |
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584 charbuf[1] = c ^ 0x40; // DEL displayed as ^? |
| 7 | 585 #endif |
| 586 | |
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587 charbuf[2] = NUL; |
| 7 | 588 } |
| 589 else if (enc_utf8 && c >= 0x80) | |
| 590 { | |
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591 transchar_hex(charbuf, c); |
| 7 | 592 } |
| 593 #ifndef EBCDIC | |
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594 else if (c >= ' ' + 0x80 && c <= '~' + 0x80) // 0xa0 - 0xfe |
| 7 | 595 { |
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596 charbuf[0] = '|'; |
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597 charbuf[1] = c - 0x80; |
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598 charbuf[2] = NUL; |
| 7 | 599 } |
| 600 #else | |
| 601 else if (c < 64) | |
| 602 { | |
|
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603 charbuf[0] = '~'; |
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604 charbuf[1] = MetaChar(c); |
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605 charbuf[2] = NUL; |
| 7 | 606 } |
| 607 #endif | |
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608 else // 0x80 - 0x9f and 0xff |
| 7 | 609 { |
| 610 /* | |
| 611 * TODO: EBCDIC I don't know what to do with this chars, so I display | |
| 612 * them as '~?' for now | |
| 613 */ | |
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614 charbuf[0] = '~'; |
| 7 | 615 #ifdef EBCDIC |
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616 charbuf[1] = '?'; // 0xff displayed as ~? |
| 7 | 617 #else |
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618 charbuf[1] = (c - 0x80) ^ 0x40; // 0xff displayed as ~? |
| 7 | 619 #endif |
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620 charbuf[2] = NUL; |
| 7 | 621 } |
| 622 } | |
| 623 | |
| 624 void | |
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625 transchar_hex(char_u *buf, int c) |
| 7 | 626 { |
| 627 int i = 0; | |
| 628 | |
| 629 buf[0] = '<'; | |
| 630 if (c > 255) | |
| 631 { | |
| 632 buf[++i] = nr2hex((unsigned)c >> 12); | |
| 633 buf[++i] = nr2hex((unsigned)c >> 8); | |
| 634 } | |
| 635 buf[++i] = nr2hex((unsigned)c >> 4); | |
| 1869 | 636 buf[++i] = nr2hex((unsigned)c); |
| 7 | 637 buf[++i] = '>'; |
| 638 buf[++i] = NUL; | |
| 639 } | |
| 640 | |
| 641 /* | |
| 642 * Convert the lower 4 bits of byte "c" to its hex character. | |
| 643 * Lower case letters are used to avoid the confusion of <F1> being 0xf1 or | |
| 644 * function key 1. | |
| 645 */ | |
| 1869 | 646 static unsigned |
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647 nr2hex(unsigned c) |
| 7 | 648 { |
| 649 if ((c & 0xf) <= 9) | |
| 650 return (c & 0xf) + '0'; | |
| 651 return (c & 0xf) - 10 + 'a'; | |
| 652 } | |
| 653 | |
| 654 /* | |
| 655 * Return number of display cells occupied by byte "b". | |
| 656 * Caller must make sure 0 <= b <= 255. | |
| 657 * For multi-byte mode "b" must be the first byte of a character. | |
| 658 * A TAB is counted as two cells: "^I". | |
| 659 * For UTF-8 mode this will return 0 for bytes >= 0x80, because the number of | |
| 660 * cells depends on further bytes. | |
| 661 */ | |
| 662 int | |
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663 byte2cells(int b) |
| 7 | 664 { |
| 665 if (enc_utf8 && b >= 0x80) | |
| 666 return 0; | |
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667 return (g_chartab[b] & CT_CELL_MASK); |
| 7 | 668 } |
| 669 | |
| 670 /* | |
| 671 * Return number of display cells occupied by character "c". | |
| 672 * "c" can be a special key (negative number) in which case 3 or 4 is returned. | |
| 673 * A TAB is counted as two cells: "^I" or four: "<09>". | |
| 674 */ | |
| 675 int | |
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676 char2cells(int c) |
| 7 | 677 { |
| 678 if (IS_SPECIAL(c)) | |
| 679 return char2cells(K_SECOND(c)) + 2; | |
| 680 if (c >= 0x80) | |
| 681 { | |
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682 // UTF-8: above 0x80 need to check the value |
| 7 | 683 if (enc_utf8) |
| 684 return utf_char2cells(c); | |
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685 // DBCS: double-byte means double-width, except for euc-jp with first |
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686 // byte 0x8e |
| 7 | 687 if (enc_dbcs != 0 && c >= 0x100) |
| 688 { | |
| 689 if (enc_dbcs == DBCS_JPNU && ((unsigned)c >> 8) == 0x8e) | |
| 690 return 1; | |
| 691 return 2; | |
| 692 } | |
| 693 } | |
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694 return (g_chartab[c & 0xff] & CT_CELL_MASK); |
| 7 | 695 } |
| 696 | |
| 697 /* | |
| 698 * Return number of display cells occupied by character at "*p". | |
| 699 * A TAB is counted as two cells: "^I" or four: "<09>". | |
| 700 */ | |
| 701 int | |
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702 ptr2cells(char_u *p) |
| 7 | 703 { |
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704 // For UTF-8 we need to look at more bytes if the first byte is >= 0x80. |
| 7 | 705 if (enc_utf8 && *p >= 0x80) |
| 706 return utf_ptr2cells(p); | |
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707 // For DBCS we can tell the cell count from the first byte. |
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708 return (g_chartab[*p] & CT_CELL_MASK); |
| 7 | 709 } |
| 710 | |
| 711 /* | |
| 3292 | 712 * Return the number of character cells string "s" will take on the screen, |
| 7 | 713 * counting TABs as two characters: "^I". |
| 714 */ | |
| 715 int | |
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716 vim_strsize(char_u *s) |
| 7 | 717 { |
| 718 return vim_strnsize(s, (int)MAXCOL); | |
| 719 } | |
| 720 | |
| 721 /* | |
| 3292 | 722 * Return the number of character cells string "s[len]" will take on the |
| 723 * screen, counting TABs as two characters: "^I". | |
| 7 | 724 */ |
| 725 int | |
|
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726 vim_strnsize(char_u *s, int len) |
| 7 | 727 { |
| 728 int size = 0; | |
| 729 | |
| 730 while (*s != NUL && --len >= 0) | |
| 731 if (has_mbyte) | |
| 732 { | |
| 474 | 733 int l = (*mb_ptr2len)(s); |
| 7 | 734 |
| 735 size += ptr2cells(s); | |
| 736 s += l; | |
| 737 len -= l - 1; | |
| 738 } | |
| 739 else | |
| 740 size += byte2cells(*s++); | |
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741 |
| 7 | 742 return size; |
| 743 } | |
| 744 | |
| 745 /* | |
| 746 * Return the number of characters 'c' will take on the screen, taking | |
| 747 * into account the size of a tab. | |
| 748 * Use a define to make it fast, this is used very often!!! | |
| 749 * Also see getvcol() below. | |
| 750 */ | |
| 751 | |
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752 #ifdef FEAT_VARTABS |
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753 # define RET_WIN_BUF_CHARTABSIZE(wp, buf, p, col) \ |
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754 if (*(p) == TAB && (!(wp)->w_p_list || wp->w_lcs_chars.tab1)) \ |
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755 { \ |
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756 return tabstop_padding(col, (buf)->b_p_ts, (buf)->b_p_vts_array); \ |
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757 } \ |
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758 else \ |
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759 return ptr2cells(p); |
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760 #else |
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761 # define RET_WIN_BUF_CHARTABSIZE(wp, buf, p, col) \ |
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762 if (*(p) == TAB && (!(wp)->w_p_list || wp->w_lcs_chars.tab1)) \ |
| 7 | 763 { \ |
| 764 int ts; \ | |
| 765 ts = (buf)->b_p_ts; \ | |
| 766 return (int)(ts - (col % ts)); \ | |
| 767 } \ | |
| 768 else \ | |
| 769 return ptr2cells(p); | |
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770 #endif |
| 7 | 771 |
| 772 int | |
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773 chartabsize(char_u *p, colnr_T col) |
| 7 | 774 { |
| 775 RET_WIN_BUF_CHARTABSIZE(curwin, curbuf, p, col) | |
| 776 } | |
| 777 | |
| 778 #ifdef FEAT_LINEBREAK | |
| 779 static int | |
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780 win_chartabsize(win_T *wp, char_u *p, colnr_T col) |
| 7 | 781 { |
| 782 RET_WIN_BUF_CHARTABSIZE(wp, wp->w_buffer, p, col) | |
| 783 } | |
| 784 #endif | |
| 785 | |
| 786 /* | |
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787 * Return the number of characters the string 's' will take on the screen, |
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788 * taking into account the size of a tab. |
| 7 | 789 */ |
| 790 int | |
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791 linetabsize(char_u *s) |
| 7 | 792 { |
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793 return linetabsize_col(0, s); |
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794 } |
|
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795 |
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796 /* |
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797 * Like linetabsize(), but starting at column "startcol". |
|
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798 */ |
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799 int |
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800 linetabsize_col(int startcol, char_u *s) |
|
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801 { |
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802 colnr_T col = startcol; |
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803 char_u *line = s; // pointer to start of line, for breakindent |
| 7 | 804 |
| 805 while (*s != NUL) | |
| 5995 | 806 col += lbr_chartabsize_adv(line, &s, col); |
| 7 | 807 return (int)col; |
| 808 } | |
| 809 | |
| 810 /* | |
| 811 * Like linetabsize(), but for a given window instead of the current one. | |
| 812 */ | |
| 813 int | |
|
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814 win_linetabsize(win_T *wp, char_u *line, colnr_T len) |
| 7 | 815 { |
| 816 colnr_T col = 0; | |
| 817 char_u *s; | |
| 818 | |
| 5995 | 819 for (s = line; *s != NUL && (len == MAXCOL || s < line + len); |
|
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820 MB_PTR_ADV(s)) |
| 5995 | 821 col += win_lbr_chartabsize(wp, line, s, col, NULL); |
| 7 | 822 return (int)col; |
| 823 } | |
| 824 | |
| 825 /* | |
| 42 | 826 * Return TRUE if 'c' is a normal identifier character: |
| 827 * Letters and characters from the 'isident' option. | |
| 7 | 828 */ |
| 829 int | |
|
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830 vim_isIDc(int c) |
| 7 | 831 { |
|
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832 return (c > 0 && c < 0x100 && (g_chartab[c] & CT_ID_CHAR)); |
| 7 | 833 } |
| 834 | |
| 835 /* | |
|
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836 * Like vim_isIDc() but not using the 'isident' option: letters, numbers and |
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837 * underscore. |
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838 */ |
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839 int |
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840 vim_isNormalIDc(int c) |
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841 { |
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842 return ASCII_ISALNUM(c) || c == '_'; |
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843 } |
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844 |
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845 /* |
| 7 | 846 * return TRUE if 'c' is a keyword character: Letters and characters from |
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847 * 'iskeyword' option for the current buffer. |
| 7 | 848 * For multi-byte characters mb_get_class() is used (builtin rules). |
| 849 */ | |
| 850 int | |
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851 vim_iswordc(int c) |
| 7 | 852 { |
| 4043 | 853 return vim_iswordc_buf(c, curbuf); |
| 854 } | |
| 855 | |
| 856 int | |
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857 vim_iswordc_buf(int c, buf_T *buf) |
| 4043 | 858 { |
| 7 | 859 if (c >= 0x100) |
| 860 { | |
| 861 if (enc_dbcs != 0) | |
| 1869 | 862 return dbcs_class((unsigned)c >> 8, (unsigned)(c & 0xff)) >= 2; |
| 7 | 863 if (enc_utf8) |
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864 return utf_class_buf(c, buf) >= 2; |
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865 return FALSE; |
| 7 | 866 } |
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867 return (c > 0 && GET_CHARTAB(buf, c) != 0); |
| 7 | 868 } |
| 869 | |
| 870 /* | |
| 871 * Just like vim_iswordc() but uses a pointer to the (multi-byte) character. | |
| 872 */ | |
| 873 int | |
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874 vim_iswordp(char_u *p) |
| 7 | 875 { |
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876 return vim_iswordp_buf(p, curbuf); |
| 7 | 877 } |
| 878 | |
| 879 int | |
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880 vim_iswordp_buf(char_u *p, buf_T *buf) |
| 7 | 881 { |
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882 int c = *p; |
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883 |
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884 if (has_mbyte && MB_BYTE2LEN(c) > 1) |
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885 c = (*mb_ptr2char)(p); |
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886 return vim_iswordc_buf(c, buf); |
| 7 | 887 } |
| 888 | |
| 889 /* | |
| 890 * return TRUE if 'c' is a valid file-name character | |
| 891 * Assume characters above 0x100 are valid (multi-byte). | |
| 892 */ | |
| 893 int | |
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894 vim_isfilec(int c) |
| 7 | 895 { |
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896 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_FNAME_CHAR))); |
| 7 | 897 } |
| 898 | |
| 899 /* | |
| 1369 | 900 * return TRUE if 'c' is a valid file-name character or a wildcard character |
| 901 * Assume characters above 0x100 are valid (multi-byte). | |
| 902 * Explicitly interpret ']' as a wildcard character as mch_has_wildcard("]") | |
| 903 * returns false. | |
| 904 */ | |
| 905 int | |
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906 vim_isfilec_or_wc(int c) |
| 1369 | 907 { |
| 908 char_u buf[2]; | |
| 909 | |
| 910 buf[0] = (char_u)c; | |
| 911 buf[1] = NUL; | |
| 912 return vim_isfilec(c) || c == ']' || mch_has_wildcard(buf); | |
| 913 } | |
| 914 | |
| 915 /* | |
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916 * Return TRUE if 'c' is a printable character. |
| 7 | 917 * Assume characters above 0x100 are printable (multi-byte), except for |
| 918 * Unicode. | |
| 919 */ | |
| 920 int | |
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921 vim_isprintc(int c) |
| 7 | 922 { |
| 923 if (enc_utf8 && c >= 0x100) | |
| 924 return utf_printable(c); | |
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925 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_PRINT_CHAR))); |
| 7 | 926 } |
| 927 | |
| 928 /* | |
| 929 * Strict version of vim_isprintc(c), don't return TRUE if "c" is the head | |
| 930 * byte of a double-byte character. | |
| 931 */ | |
| 932 int | |
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933 vim_isprintc_strict(int c) |
| 7 | 934 { |
| 935 if (enc_dbcs != 0 && c < 0x100 && MB_BYTE2LEN(c) > 1) | |
| 936 return FALSE; | |
| 937 if (enc_utf8 && c >= 0x100) | |
| 938 return utf_printable(c); | |
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939 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_PRINT_CHAR))); |
| 7 | 940 } |
| 941 | |
| 942 /* | |
| 943 * like chartabsize(), but also check for line breaks on the screen | |
| 944 */ | |
| 945 int | |
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946 lbr_chartabsize( |
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947 char_u *line UNUSED, // start of the line |
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948 unsigned char *s, |
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949 colnr_T col) |
| 7 | 950 { |
| 951 #ifdef FEAT_LINEBREAK | |
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952 if (!curwin->w_p_lbr && *get_showbreak_value(curwin) == NUL |
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953 && !curwin->w_p_bri) |
| 7 | 954 { |
| 955 #endif | |
| 956 if (curwin->w_p_wrap) | |
| 957 return win_nolbr_chartabsize(curwin, s, col, NULL); | |
| 958 RET_WIN_BUF_CHARTABSIZE(curwin, curbuf, s, col) | |
| 959 #ifdef FEAT_LINEBREAK | |
| 960 } | |
| 5995 | 961 return win_lbr_chartabsize(curwin, line == NULL ? s : line, s, col, NULL); |
| 7 | 962 #endif |
| 963 } | |
| 964 | |
| 965 /* | |
| 966 * Call lbr_chartabsize() and advance the pointer. | |
| 967 */ | |
| 968 int | |
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969 lbr_chartabsize_adv( |
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970 char_u *line, // start of the line |
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971 char_u **s, |
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972 colnr_T col) |
| 7 | 973 { |
| 974 int retval; | |
| 975 | |
| 5995 | 976 retval = lbr_chartabsize(line, *s, col); |
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977 MB_PTR_ADV(*s); |
| 7 | 978 return retval; |
| 979 } | |
| 980 | |
| 981 /* | |
| 982 * This function is used very often, keep it fast!!!! | |
| 983 * | |
| 984 * If "headp" not NULL, set *headp to the size of what we for 'showbreak' | |
| 985 * string at start of line. Warning: *headp is only set if it's a non-zero | |
| 986 * value, init to 0 before calling. | |
| 987 */ | |
| 988 int | |
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989 win_lbr_chartabsize( |
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990 win_T *wp, |
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991 char_u *line UNUSED, // start of the line |
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992 char_u *s, |
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993 colnr_T col, |
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994 int *headp UNUSED) |
| 7 | 995 { |
| 996 #ifdef FEAT_LINEBREAK | |
| 997 int c; | |
| 998 int size; | |
| 999 colnr_T col2; | |
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1000 colnr_T col_adj = 0; // col + screen size of tab |
| 7 | 1001 colnr_T colmax; |
| 1002 int added; | |
| 1003 int mb_added = 0; | |
| 1004 int numberextra; | |
| 1005 char_u *ps; | |
| 1006 int tab_corr = (*s == TAB); | |
| 236 | 1007 int n; |
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1008 char_u *sbr; |
| 7 | 1009 |
| 1010 /* | |
| 5995 | 1011 * No 'linebreak', 'showbreak' and 'breakindent': return quickly. |
| 7 | 1012 */ |
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1013 if (!wp->w_p_lbr && !wp->w_p_bri && *get_showbreak_value(wp) == NUL) |
| 7 | 1014 #endif |
| 1015 { | |
| 1016 if (wp->w_p_wrap) | |
| 1017 return win_nolbr_chartabsize(wp, s, col, headp); | |
| 1018 RET_WIN_BUF_CHARTABSIZE(wp, wp->w_buffer, s, col) | |
| 1019 } | |
| 1020 | |
| 1021 #ifdef FEAT_LINEBREAK | |
| 1022 /* | |
| 1023 * First get normal size, without 'linebreak' | |
| 1024 */ | |
| 1025 size = win_chartabsize(wp, s, col); | |
| 1026 c = *s; | |
| 6024 | 1027 if (tab_corr) |
| 1028 col_adj = size - 1; | |
| 7 | 1029 |
| 1030 /* | |
| 1031 * If 'linebreak' set check at a blank before a non-blank if the line | |
| 1032 * needs a break here | |
| 1033 */ | |
| 1034 if (wp->w_p_lbr | |
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1035 && VIM_ISBREAK(c) |
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1036 && !VIM_ISBREAK((int)s[1]) |
| 7 | 1037 && wp->w_p_wrap |
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Christian Brabandt <cb@256bit.org>
parents:
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changeset
|
1038 && wp->w_width != 0) |
| 7 | 1039 { |
| 1040 /* | |
| 1041 * Count all characters from first non-blank after a blank up to next | |
| 1042 * non-blank after a blank. | |
| 1043 */ | |
| 1044 numberextra = win_col_off(wp); | |
| 1045 col2 = col; | |
|
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|
1046 colmax = (colnr_T)(wp->w_width - numberextra - col_adj); |
| 7 | 1047 if (col >= colmax) |
| 236 | 1048 { |
| 6024 | 1049 colmax += col_adj; |
| 1050 n = colmax + win_col_off2(wp); | |
| 236 | 1051 if (n > 0) |
| 6024 | 1052 colmax += (((col - colmax) / n) + 1) * n - col_adj; |
| 236 | 1053 } |
| 1054 | |
| 7 | 1055 for (;;) |
| 1056 { | |
| 1057 ps = s; | |
|
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Christian Brabandt <cb@256bit.org>
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|
1058 MB_PTR_ADV(s); |
| 7 | 1059 c = *s; |
| 1060 if (!(c != NUL | |
|
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|
1061 && (VIM_ISBREAK(c) |
|
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|
1062 || (!VIM_ISBREAK(c) |
|
11133
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parents:
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diff
changeset
|
1063 && (col2 == col || !VIM_ISBREAK((int)*ps)))))) |
| 7 | 1064 break; |
| 1065 | |
| 1066 col2 += win_chartabsize(wp, s, col2); | |
|
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|
1067 if (col2 >= colmax) // doesn't fit |
| 7 | 1068 { |
| 6024 | 1069 size = colmax - col + col_adj; |
| 7 | 1070 break; |
| 1071 } | |
| 1072 } | |
| 1073 } | |
| 1074 else if (has_mbyte && size == 2 && MB_BYTE2LEN(*s) > 1 | |
| 1075 && wp->w_p_wrap && in_win_border(wp, col)) | |
| 1076 { | |
|
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|
1077 ++size; // Count the ">" in the last column. |
| 7 | 1078 mb_added = 1; |
| 1079 } | |
| 1080 | |
| 1081 /* | |
| 5995 | 1082 * May have to add something for 'breakindent' and/or 'showbreak' |
| 1083 * string at start of line. | |
| 7 | 1084 * Set *headp to the size of what we add. |
| 1085 */ | |
| 1086 added = 0; | |
|
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|
1087 sbr = get_showbreak_value(wp); |
|
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diff
changeset
|
1088 if ((*sbr != NUL || wp->w_p_bri) && wp->w_p_wrap && col != 0) |
| 7 | 1089 { |
| 6503 | 1090 colnr_T sbrlen = 0; |
| 1091 int numberwidth = win_col_off(wp); | |
| 1092 | |
| 1093 numberextra = numberwidth; | |
| 7 | 1094 col += numberextra + mb_added; |
|
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|
1095 if (col >= (colnr_T)wp->w_width) |
| 7 | 1096 { |
|
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|
1097 col -= wp->w_width; |
|
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|
1098 numberextra = wp->w_width - (numberextra - win_col_off2(wp)); |
| 6503 | 1099 if (col >= numberextra && numberextra > 0) |
| 6312 | 1100 col %= numberextra; |
|
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|
1101 if (*sbr != NUL) |
| 6288 | 1102 { |
|
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|
1103 sbrlen = (colnr_T)MB_CHARLEN(sbr); |
| 6288 | 1104 if (col >= sbrlen) |
| 1105 col -= sbrlen; | |
| 1106 } | |
| 6503 | 1107 if (col >= numberextra && numberextra > 0) |
| 7 | 1108 col = col % numberextra; |
| 6503 | 1109 else if (col > 0 && numberextra > 0) |
| 1110 col += numberwidth - win_col_off2(wp); | |
| 1111 | |
| 1112 numberwidth -= win_col_off2(wp); | |
| 7 | 1113 } |
|
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|
1114 if (col == 0 || col + size + sbrlen > (colnr_T)wp->w_width) |
| 7 | 1115 { |
| 5995 | 1116 added = 0; |
|
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|
1117 if (*sbr != NUL) |
| 6503 | 1118 { |
|
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|
1119 if (size + sbrlen + numberwidth > (colnr_T)wp->w_width) |
| 6503 | 1120 { |
|
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|
1121 // calculate effective window width |
|
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|
1122 int width = (colnr_T)wp->w_width - sbrlen - numberwidth; |
|
16054
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|
1123 int prev_width = col |
|
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patch 8.1.1032: warnings from clang static analyzer
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|
1124 ? ((colnr_T)wp->w_width - (sbrlen + col)) : 0; |
|
16819
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|
1125 |
|
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|
1126 if (width <= 0) |
|
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|
1127 width = (colnr_T)1; |
|
18574
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|
1128 added += ((size - prev_width) / width) * vim_strsize(sbr); |
| 6503 | 1129 if ((size - prev_width) % width) |
|
16819
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|
1130 // wrapped, add another length of 'sbr' |
|
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parents:
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|
1131 added += vim_strsize(sbr); |
| 6503 | 1132 } |
| 1133 else | |
|
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|
1134 added += vim_strsize(sbr); |
| 6503 | 1135 } |
| 5995 | 1136 if (wp->w_p_bri) |
| 1137 added += get_breakindent_win(wp, line); | |
| 1138 | |
| 6160 | 1139 size += added; |
| 7 | 1140 if (col != 0) |
| 1141 added = 0; | |
| 1142 } | |
| 1143 } | |
| 1144 if (headp != NULL) | |
| 1145 *headp = added + mb_added; | |
| 1146 return size; | |
| 1147 #endif | |
| 1148 } | |
| 1149 | |
| 1150 /* | |
| 1151 * Like win_lbr_chartabsize(), except that we know 'linebreak' is off and | |
| 1152 * 'wrap' is on. This means we need to check for a double-byte character that | |
| 1153 * doesn't fit at the end of the screen line. | |
| 1154 */ | |
| 1155 static int | |
|
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|
1156 win_nolbr_chartabsize( |
|
83861277e6a3
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|
1157 win_T *wp, |
|
83861277e6a3
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|
1158 char_u *s, |
|
83861277e6a3
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|
1159 colnr_T col, |
|
83861277e6a3
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|
1160 int *headp) |
| 7 | 1161 { |
| 1162 int n; | |
| 1163 | |
|
23952
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changeset
|
1164 if (*s == TAB && (!wp->w_p_list || wp->w_lcs_chars.tab1)) |
| 7 | 1165 { |
|
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|
1166 # ifdef FEAT_VARTABS |
|
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|
1167 return tabstop_padding(col, wp->w_buffer->b_p_ts, |
|
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|
1168 wp->w_buffer->b_p_vts_array); |
|
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|
1169 # else |
| 7 | 1170 n = wp->w_buffer->b_p_ts; |
| 1171 return (int)(n - (col % n)); | |
|
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|
1172 # endif |
| 7 | 1173 } |
| 1174 n = ptr2cells(s); | |
|
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|
1175 // Add one cell for a double-width character in the last column of the |
|
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|
1176 // window, displayed with a ">". |
| 7 | 1177 if (n == 2 && MB_BYTE2LEN(*s) > 1 && in_win_border(wp, col)) |
| 1178 { | |
| 1179 if (headp != NULL) | |
| 1180 *headp = 1; | |
| 1181 return 3; | |
| 1182 } | |
| 1183 return n; | |
| 1184 } | |
| 1185 | |
| 1186 /* | |
| 1187 * Return TRUE if virtual column "vcol" is in the rightmost column of window | |
| 1188 * "wp". | |
| 1189 */ | |
|
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|
1190 static int |
|
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|
1191 in_win_border(win_T *wp, colnr_T vcol) |
| 7 | 1192 { |
|
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|
1193 int width1; // width of first line (after line number) |
|
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|
1194 int width2; // width of further lines |
| 7 | 1195 |
|
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|
1196 if (wp->w_width == 0) // there is no border |
| 7 | 1197 return FALSE; |
|
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diff
changeset
|
1198 width1 = wp->w_width - win_col_off(wp); |
| 1869 | 1199 if ((int)vcol < width1 - 1) |
| 7 | 1200 return FALSE; |
| 1869 | 1201 if ((int)vcol == width1 - 1) |
| 7 | 1202 return TRUE; |
| 1203 width2 = width1 + win_col_off2(wp); | |
| 1970 | 1204 if (width2 <= 0) |
| 1205 return FALSE; | |
| 7 | 1206 return ((vcol - width1) % width2 == width2 - 1); |
| 1207 } | |
| 1208 | |
| 1209 /* | |
| 1210 * Get virtual column number of pos. | |
| 1211 * start: on the first position of this character (TAB, ctrl) | |
| 1212 * cursor: where the cursor is on this character (first char, except for TAB) | |
| 1213 * end: on the last position of this character (TAB, ctrl) | |
| 1214 * | |
| 1215 * This is used very often, keep it fast! | |
| 1216 */ | |
| 1217 void | |
|
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|
1218 getvcol( |
|
83861277e6a3
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|
1219 win_T *wp, |
|
83861277e6a3
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|
1220 pos_T *pos, |
|
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|
1221 colnr_T *start, |
|
83861277e6a3
commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
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diff
changeset
|
1222 colnr_T *cursor, |
|
83861277e6a3
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changeset
|
1223 colnr_T *end) |
| 7 | 1224 { |
| 1225 colnr_T vcol; | |
|
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|
1226 char_u *ptr; // points to current char |
|
c469e1930456
patch 8.1.2368: using old C style comments
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changeset
|
1227 char_u *posptr; // points to char at pos->col |
|
c469e1930456
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parents:
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changeset
|
1228 char_u *line; // start of the line |
| 7 | 1229 int incr; |
| 1230 int head; | |
|
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|
1231 #ifdef FEAT_VARTABS |
|
2ad722003b36
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|
1232 int *vts = wp->w_buffer->b_p_vts_array; |
|
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|
1233 #endif |
| 7 | 1234 int ts = wp->w_buffer->b_p_ts; |
| 1235 int c; | |
| 1236 | |
| 1237 vcol = 0; | |
| 5995 | 1238 line = ptr = ml_get_buf(wp->w_buffer, pos->lnum, FALSE); |
|
2108
3cdf2a653e00
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changeset
|
1239 if (pos->col == MAXCOL) |
|
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|
1240 posptr = NULL; // continue until the NUL |
|
2108
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1241 else |
|
10720
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1242 { |
|
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|
1243 // Special check for an empty line, which can happen on exit, when |
|
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changeset
|
1244 // ml_get_buf() always returns an empty string. |
|
10835
c9da7f9137af
patch 8.0.0307: asan detects a memory error when EXITFREE is defined
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changeset
|
1245 if (*ptr == NUL) |
|
c9da7f9137af
patch 8.0.0307: asan detects a memory error when EXITFREE is defined
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changeset
|
1246 pos->col = 0; |
|
2108
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Bram Moolenaar <bram@zimbu.org>
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|
1247 posptr = ptr + pos->col; |
|
10720
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changeset
|
1248 if (has_mbyte) |
|
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|
1249 // always start on the first byte |
|
10720
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Christian Brabandt <cb@256bit.org>
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|
1250 posptr -= (*mb_head_off)(line, posptr); |
|
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changeset
|
1251 } |
| 7 | 1252 |
| 1253 /* | |
| 1254 * This function is used very often, do some speed optimizations. | |
| 5995 | 1255 * When 'list', 'linebreak', 'showbreak' and 'breakindent' are not set |
| 1256 * use a simple loop. | |
| 7 | 1257 * Also use this when 'list' is set but tabs take their normal size. |
| 1258 */ | |
|
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diff
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|
1259 if ((!wp->w_p_list || wp->w_lcs_chars.tab1 != NUL) |
| 7 | 1260 #ifdef FEAT_LINEBREAK |
|
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diff
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|
1261 && !wp->w_p_lbr && *get_showbreak_value(wp) == NUL && !wp->w_p_bri |
| 7 | 1262 #endif |
| 1263 ) | |
| 1264 { | |
| 1265 for (;;) | |
| 1266 { | |
| 1267 head = 0; | |
| 1268 c = *ptr; | |
|
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|
1269 // make sure we don't go past the end of the line |
| 7 | 1270 if (c == NUL) |
| 1271 { | |
|
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|
1272 incr = 1; // NUL at end of line only takes one column |
| 7 | 1273 break; |
| 1274 } | |
|
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|
1275 // A tab gets expanded, depending on the current column |
| 7 | 1276 if (c == TAB) |
|
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changeset
|
1277 #ifdef FEAT_VARTABS |
|
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|
1278 incr = tabstop_padding(vcol, ts, vts); |
|
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|
1279 #else |
| 7 | 1280 incr = ts - (vcol % ts); |
|
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|
1281 #endif |
| 7 | 1282 else |
| 1283 { | |
| 1284 if (has_mbyte) | |
| 1285 { | |
|
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|
1286 // For utf-8, if the byte is >= 0x80, need to look at |
|
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|
1287 // further bytes to find the cell width. |
| 7 | 1288 if (enc_utf8 && c >= 0x80) |
| 1289 incr = utf_ptr2cells(ptr); | |
| 1290 else | |
|
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|
1291 incr = g_chartab[c] & CT_CELL_MASK; |
| 7 | 1292 |
|
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|
1293 // If a double-cell char doesn't fit at the end of a line |
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|
1294 // it wraps to the next line, it's like this char is three |
|
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|
1295 // cells wide. |
| 1546 | 1296 if (incr == 2 && wp->w_p_wrap && MB_BYTE2LEN(*ptr) > 1 |
| 1297 && in_win_border(wp, vcol)) | |
| 7 | 1298 { |
| 1299 ++incr; | |
| 1300 head = 1; | |
| 1301 } | |
| 1302 } | |
| 1303 else | |
|
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|
1304 incr = g_chartab[c] & CT_CELL_MASK; |
| 7 | 1305 } |
| 1306 | |
|
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|
1307 if (posptr != NULL && ptr >= posptr) // character at pos->col |
| 7 | 1308 break; |
| 1309 | |
| 1310 vcol += incr; | |
|
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|
1311 MB_PTR_ADV(ptr); |
| 7 | 1312 } |
| 1313 } | |
| 1314 else | |
| 1315 { | |
| 1316 for (;;) | |
| 1317 { | |
|
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|
1318 // A tab gets expanded, depending on the current column |
| 7 | 1319 head = 0; |
| 5995 | 1320 incr = win_lbr_chartabsize(wp, line, ptr, vcol, &head); |
|
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|
1321 // make sure we don't go past the end of the line |
| 7 | 1322 if (*ptr == NUL) |
| 1323 { | |
|
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1324 incr = 1; // NUL at end of line only takes one column |
| 7 | 1325 break; |
| 1326 } | |
| 1327 | |
|
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|
1328 if (posptr != NULL && ptr >= posptr) // character at pos->col |
| 7 | 1329 break; |
| 1330 | |
| 1331 vcol += incr; | |
|
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|
1332 MB_PTR_ADV(ptr); |
| 7 | 1333 } |
| 1334 } | |
| 1335 if (start != NULL) | |
| 1336 *start = vcol + head; | |
| 1337 if (end != NULL) | |
| 1338 *end = vcol + incr - 1; | |
| 1339 if (cursor != NULL) | |
| 1340 { | |
| 1341 if (*ptr == TAB | |
| 1342 && (State & NORMAL) | |
| 1343 && !wp->w_p_list | |
| 1344 && !virtual_active() | |
|
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1345 && !(VIsual_active |
|
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|
1346 && (*p_sel == 'e' || LTOREQ_POS(*pos, VIsual))) |
| 7 | 1347 ) |
|
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|
1348 *cursor = vcol + incr - 1; // cursor at end |
| 7 | 1349 else |
|
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|
1350 *cursor = vcol + head; // cursor at start |
| 7 | 1351 } |
| 1352 } | |
| 1353 | |
| 1354 /* | |
| 1355 * Get virtual cursor column in the current window, pretending 'list' is off. | |
| 1356 */ | |
| 1357 colnr_T | |
|
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|
1358 getvcol_nolist(pos_T *posp) |
| 7 | 1359 { |
| 1360 int list_save = curwin->w_p_list; | |
| 1361 colnr_T vcol; | |
| 1362 | |
| 1363 curwin->w_p_list = FALSE; | |
|
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|
1364 if (posp->coladd) |
|
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|
1365 getvvcol(curwin, posp, NULL, &vcol, NULL); |
|
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|
1366 else |
|
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diff
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|
1367 getvcol(curwin, posp, NULL, &vcol, NULL); |
| 7 | 1368 curwin->w_p_list = list_save; |
| 1369 return vcol; | |
| 1370 } | |
| 1371 | |
| 1372 /* | |
| 1373 * Get virtual column in virtual mode. | |
| 1374 */ | |
| 1375 void | |
|
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|
1376 getvvcol( |
|
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|
1377 win_T *wp, |
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|
1378 pos_T *pos, |
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|
1379 colnr_T *start, |
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1380 colnr_T *cursor, |
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|
1381 colnr_T *end) |
| 7 | 1382 { |
| 1383 colnr_T col; | |
| 1384 colnr_T coladd; | |
| 1385 colnr_T endadd; | |
| 1386 char_u *ptr; | |
| 1387 | |
| 1388 if (virtual_active()) | |
| 1389 { | |
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|
1390 // For virtual mode, only want one value |
| 7 | 1391 getvcol(wp, pos, &col, NULL, NULL); |
| 1392 | |
| 1393 coladd = pos->coladd; | |
| 1394 endadd = 0; | |
|
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|
1395 // Cannot put the cursor on part of a wide character. |
| 7 | 1396 ptr = ml_get_buf(wp->w_buffer, pos->lnum, FALSE); |
| 1869 | 1397 if (pos->col < (colnr_T)STRLEN(ptr)) |
| 7 | 1398 { |
| 1399 int c = (*mb_ptr2char)(ptr + pos->col); | |
| 1400 | |
| 1401 if (c != TAB && vim_isprintc(c)) | |
| 1402 { | |
| 1869 | 1403 endadd = (colnr_T)(char2cells(c) - 1); |
|
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|
1404 if (coladd > endadd) // past end of line |
| 557 | 1405 endadd = 0; |
| 7 | 1406 else |
| 1407 coladd = 0; | |
| 1408 } | |
| 1409 } | |
| 1410 col += coladd; | |
| 1411 if (start != NULL) | |
| 1412 *start = col; | |
| 1413 if (cursor != NULL) | |
| 1414 *cursor = col; | |
| 1415 if (end != NULL) | |
| 1416 *end = col + endadd; | |
| 1417 } | |
| 1418 else | |
| 1419 getvcol(wp, pos, start, cursor, end); | |
| 1420 } | |
| 1421 | |
| 1422 /* | |
| 1423 * Get the leftmost and rightmost virtual column of pos1 and pos2. | |
| 1424 * Used for Visual block mode. | |
| 1425 */ | |
| 1426 void | |
|
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|
1427 getvcols( |
|
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|
1428 win_T *wp, |
|
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|
1429 pos_T *pos1, |
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|
1430 pos_T *pos2, |
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1431 colnr_T *left, |
|
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|
1432 colnr_T *right) |
| 7 | 1433 { |
| 1434 colnr_T from1, from2, to1, to2; | |
| 1435 | |
|
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|
1436 if (LT_POSP(pos1, pos2)) |
| 7 | 1437 { |
| 1438 getvvcol(wp, pos1, &from1, NULL, &to1); | |
| 1439 getvvcol(wp, pos2, &from2, NULL, &to2); | |
| 1440 } | |
| 1441 else | |
| 1442 { | |
| 1443 getvvcol(wp, pos2, &from1, NULL, &to1); | |
| 1444 getvvcol(wp, pos1, &from2, NULL, &to2); | |
| 1445 } | |
| 1446 if (from2 < from1) | |
| 1447 *left = from2; | |
| 1448 else | |
| 1449 *left = from1; | |
| 1450 if (to2 > to1) | |
| 1451 { | |
| 1452 if (*p_sel == 'e' && from2 - 1 >= to1) | |
| 1453 *right = from2 - 1; | |
| 1454 else | |
| 1455 *right = to2; | |
| 1456 } | |
| 1457 else | |
| 1458 *right = to1; | |
| 1459 } | |
| 1460 | |
| 1461 /* | |
| 1462 * skipwhite: skip over ' ' and '\t'. | |
| 1463 */ | |
| 1464 char_u * | |
|
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1465 skipwhite(char_u *q) |
| 7 | 1466 { |
| 1687 | 1467 char_u *p = q; |
| 1468 | |
|
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1469 while (VIM_ISWHITE(*p)) // skip to next non-white |
| 7 | 1470 ++p; |
| 1471 return p; | |
| 1472 } | |
| 1473 | |
| 1474 /* | |
|
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1475 * getwhitecols: return the number of whitespace |
|
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1476 * columns (bytes) at the start of a given line |
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1477 */ |
|
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1478 int |
|
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1479 getwhitecols_curline() |
|
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1480 { |
|
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1481 return getwhitecols(ml_get_curline()); |
|
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1482 } |
|
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1483 |
|
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1484 int |
|
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1485 getwhitecols(char_u *p) |
|
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1486 { |
|
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|
1487 return skipwhite(p) - p; |
|
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1488 } |
|
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1489 |
|
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1490 /* |
| 293 | 1491 * skip over digits |
| 7 | 1492 */ |
| 1493 char_u * | |
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1494 skipdigits(char_u *q) |
| 7 | 1495 { |
| 1687 | 1496 char_u *p = q; |
| 1497 | |
|
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1498 while (VIM_ISDIGIT(*p)) // skip to next non-digit |
| 7 | 1499 ++p; |
| 1500 return p; | |
| 1501 } | |
| 1502 | |
| 741 | 1503 #if defined(FEAT_SYN_HL) || defined(FEAT_SPELL) || defined(PROTO) |
| 301 | 1504 /* |
|
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1505 * skip over binary digits |
|
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1506 */ |
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1507 char_u * |
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1508 skipbin(char_u *q) |
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1509 { |
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1510 char_u *p = q; |
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1511 |
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1512 while (vim_isbdigit(*p)) // skip to next non-digit |
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1513 ++p; |
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1514 return p; |
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1515 } |
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1516 |
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1517 /* |
| 301 | 1518 * skip over digits and hex characters |
| 1519 */ | |
| 1520 char_u * | |
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1521 skiphex(char_u *q) |
| 301 | 1522 { |
| 1687 | 1523 char_u *p = q; |
| 1524 | |
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1525 while (vim_isxdigit(*p)) // skip to next non-digit |
| 301 | 1526 ++p; |
| 1527 return p; | |
| 1528 } | |
| 1529 #endif | |
| 1530 | |
| 293 | 1531 /* |
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1532 * skip to bin digit (or NUL after the string) |
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1533 */ |
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1534 char_u * |
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1535 skiptobin(char_u *q) |
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1536 { |
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1537 char_u *p = q; |
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1538 |
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1539 while (*p != NUL && !vim_isbdigit(*p)) // skip to next digit |
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1540 ++p; |
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1541 return p; |
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1542 } |
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1543 |
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1544 /* |
| 293 | 1545 * skip to digit (or NUL after the string) |
| 1546 */ | |
| 1547 char_u * | |
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1548 skiptodigit(char_u *q) |
| 293 | 1549 { |
| 1687 | 1550 char_u *p = q; |
| 1551 | |
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1552 while (*p != NUL && !VIM_ISDIGIT(*p)) // skip to next digit |
| 293 | 1553 ++p; |
| 1554 return p; | |
| 1555 } | |
| 1556 | |
| 1557 /* | |
| 1558 * skip to hex character (or NUL after the string) | |
| 1559 */ | |
| 1560 char_u * | |
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1561 skiptohex(char_u *q) |
| 293 | 1562 { |
| 1687 | 1563 char_u *p = q; |
| 1564 | |
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1565 while (*p != NUL && !vim_isxdigit(*p)) // skip to next digit |
| 293 | 1566 ++p; |
| 1567 return p; | |
| 1568 } | |
| 1569 | |
| 7 | 1570 /* |
| 1571 * Variant of isdigit() that can handle characters > 0x100. | |
| 1572 * We don't use isdigit() here, because on some systems it also considers | |
| 1573 * superscript 1 to be a digit. | |
| 1574 * Use the VIM_ISDIGIT() macro for simple arguments. | |
| 1575 */ | |
| 1576 int | |
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1577 vim_isdigit(int c) |
| 7 | 1578 { |
| 1579 return (c >= '0' && c <= '9'); | |
| 1580 } | |
| 1581 | |
| 1582 /* | |
| 1583 * Variant of isxdigit() that can handle characters > 0x100. | |
| 1584 * We don't use isxdigit() here, because on some systems it also considers | |
| 1585 * superscript 1 to be a digit. | |
| 1586 */ | |
| 1587 int | |
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1588 vim_isxdigit(int c) |
| 7 | 1589 { |
| 1590 return (c >= '0' && c <= '9') | |
| 1591 || (c >= 'a' && c <= 'f') | |
| 1592 || (c >= 'A' && c <= 'F'); | |
| 1593 } | |
| 1594 | |
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1595 /* |
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1596 * Corollary of vim_isdigit and vim_isxdigit() that can handle |
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1597 * characters > 0x100. |
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1598 */ |
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1599 int |
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1600 vim_isbdigit(int c) |
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1601 { |
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1602 return (c == '0' || c == '1'); |
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1603 } |
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1604 |
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1605 static int |
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1606 vim_isodigit(int c) |
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1607 { |
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1608 return (c >= '0' && c <= '7'); |
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1609 } |
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1610 |
| 492 | 1611 /* |
| 1612 * Vim's own character class functions. These exist because many library | |
| 1613 * islower()/toupper() etc. do not work properly: they crash when used with | |
| 1614 * invalid values or can't handle latin1 when the locale is C. | |
| 1615 * Speed is most important here. | |
| 1616 */ | |
| 1617 #define LATIN1LOWER 'l' | |
| 1618 #define LATIN1UPPER 'U' | |
| 1619 | |
| 497 | 1620 static char_u latin1flags[257] = " UUUUUUUUUUUUUUUUUUUUUUUUUU llllllllllllllllllllllllll UUUUUUUUUUUUUUUUUUUUUUU UUUUUUUllllllllllllllllllllllll llllllll"; |
| 3533 | 1621 static char_u latin1upper[257] = " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`ABCDEFGHIJKLMNOPQRSTUVWXYZ{|}~\x7f\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xf7\xd8\xd9\xda\xdb\xdc\xdd\xde\xff"; |
| 1622 static char_u latin1lower[257] = " !\"#$%&'()*+,-./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 | 1623 |
| 1624 int | |
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1625 vim_islower(int c) |
| 492 | 1626 { |
| 1627 if (c <= '@') | |
| 1628 return FALSE; | |
| 1629 if (c >= 0x80) | |
| 1630 { | |
| 1631 if (enc_utf8) | |
| 1632 return utf_islower(c); | |
| 1633 if (c >= 0x100) | |
| 1634 { | |
| 1635 #ifdef HAVE_ISWLOWER | |
| 1636 if (has_mbyte) | |
| 1637 return iswlower(c); | |
| 1638 #endif | |
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1639 // islower() can't handle these chars and may crash |
| 492 | 1640 return FALSE; |
| 1641 } | |
| 1642 if (enc_latin1like) | |
| 1643 return (latin1flags[c] & LATIN1LOWER) == LATIN1LOWER; | |
| 1644 } | |
| 1645 return islower(c); | |
| 1646 } | |
| 1647 | |
| 1648 int | |
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1649 vim_isupper(int c) |
| 492 | 1650 { |
| 1651 if (c <= '@') | |
| 1652 return FALSE; | |
| 1653 if (c >= 0x80) | |
| 1654 { | |
| 1655 if (enc_utf8) | |
| 1656 return utf_isupper(c); | |
| 1657 if (c >= 0x100) | |
| 1658 { | |
| 1659 #ifdef HAVE_ISWUPPER | |
| 1660 if (has_mbyte) | |
| 1661 return iswupper(c); | |
| 1662 #endif | |
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1663 // islower() can't handle these chars and may crash |
| 492 | 1664 return FALSE; |
| 1665 } | |
| 1666 if (enc_latin1like) | |
| 1667 return (latin1flags[c] & LATIN1UPPER) == LATIN1UPPER; | |
| 1668 } | |
| 1669 return isupper(c); | |
| 1670 } | |
| 1671 | |
| 1672 int | |
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1673 vim_toupper(int c) |
| 492 | 1674 { |
| 1675 if (c <= '@') | |
| 1676 return c; | |
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1677 if (c >= 0x80 || !(cmp_flags & CMP_KEEPASCII)) |
| 492 | 1678 { |
| 1679 if (enc_utf8) | |
| 1680 return utf_toupper(c); | |
| 1681 if (c >= 0x100) | |
| 1682 { | |
| 1683 #ifdef HAVE_TOWUPPER | |
| 1684 if (has_mbyte) | |
| 1685 return towupper(c); | |
| 1686 #endif | |
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1687 // toupper() can't handle these chars and may crash |
| 492 | 1688 return c; |
| 1689 } | |
| 1690 if (enc_latin1like) | |
| 1691 return latin1upper[c]; | |
| 1692 } | |
|
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1693 if (c < 0x80 && (cmp_flags & CMP_KEEPASCII)) |
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1694 return TOUPPER_ASC(c); |
| 492 | 1695 return TOUPPER_LOC(c); |
| 1696 } | |
| 1697 | |
| 1698 int | |
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1699 vim_tolower(int c) |
| 492 | 1700 { |
| 1701 if (c <= '@') | |
| 1702 return c; | |
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1703 if (c >= 0x80 || !(cmp_flags & CMP_KEEPASCII)) |
| 492 | 1704 { |
| 1705 if (enc_utf8) | |
| 1706 return utf_tolower(c); | |
| 1707 if (c >= 0x100) | |
| 1708 { | |
| 1709 #ifdef HAVE_TOWLOWER | |
| 1710 if (has_mbyte) | |
| 1711 return towlower(c); | |
| 1712 #endif | |
|
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|
1713 // tolower() can't handle these chars and may crash |
| 492 | 1714 return c; |
| 1715 } | |
| 1716 if (enc_latin1like) | |
| 1717 return latin1lower[c]; | |
| 1718 } | |
|
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|
1719 if (c < 0x80 && (cmp_flags & CMP_KEEPASCII)) |
|
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|
1720 return TOLOWER_ASC(c); |
| 492 | 1721 return TOLOWER_LOC(c); |
| 1722 } | |
| 1723 | |
| 7 | 1724 /* |
| 1725 * skiptowhite: skip over text until ' ' or '\t' or NUL. | |
| 1726 */ | |
| 1727 char_u * | |
|
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diff
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|
1728 skiptowhite(char_u *p) |
| 7 | 1729 { |
| 1730 while (*p != ' ' && *p != '\t' && *p != NUL) | |
| 1731 ++p; | |
| 1732 return p; | |
| 1733 } | |
| 1734 | |
| 1735 /* | |
| 1736 * skiptowhite_esc: Like skiptowhite(), but also skip escaped chars | |
| 1737 */ | |
| 1738 char_u * | |
|
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diff
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|
1739 skiptowhite_esc(char_u *p) |
| 7 | 1740 { |
| 1741 while (*p != ' ' && *p != '\t' && *p != NUL) | |
| 1742 { | |
| 1743 if ((*p == '\\' || *p == Ctrl_V) && *(p + 1) != NUL) | |
| 1744 ++p; | |
| 1745 ++p; | |
| 1746 } | |
| 1747 return p; | |
| 1748 } | |
| 1749 | |
| 1750 /* | |
| 1751 * Getdigits: Get a number from a string and skip over it. | |
| 1752 * Note: the argument is a pointer to a char_u pointer! | |
| 1753 */ | |
| 1754 long | |
|
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diff
changeset
|
1755 getdigits(char_u **pp) |
| 7 | 1756 { |
| 1757 char_u *p; | |
| 1758 long retval; | |
| 1759 | |
| 1760 p = *pp; | |
| 1761 retval = atol((char *)p); | |
|
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|
1762 if (*p == '-') // skip negative sign |
| 7 | 1763 ++p; |
|
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|
1764 p = skipdigits(p); // skip to next non-digit |
| 7 | 1765 *pp = p; |
| 1766 return retval; | |
| 1767 } | |
| 1768 | |
| 1769 /* | |
| 1770 * Return TRUE if "lbuf" is empty or only contains blanks. | |
| 1771 */ | |
| 1772 int | |
|
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|
1773 vim_isblankline(char_u *lbuf) |
| 7 | 1774 { |
| 1775 char_u *p; | |
| 1776 | |
| 1777 p = skipwhite(lbuf); | |
| 1778 return (*p == NUL || *p == '\r' || *p == '\n'); | |
| 1779 } | |
| 1780 | |
| 1781 /* | |
| 1782 * Convert a string into a long and/or unsigned long, taking care of | |
|
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|
1783 * hexadecimal, octal, and binary numbers. Accepts a '-' sign. |
|
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|
1784 * If "prep" is not NULL, returns a flag to indicate the type of the number: |
| 7 | 1785 * 0 decimal |
| 1786 * '0' octal | |
|
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|
1787 * 'O' octal |
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1788 * 'o' octal |
|
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|
1789 * 'B' bin |
|
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|
1790 * 'b' bin |
| 7 | 1791 * 'X' hex |
| 1792 * 'x' hex | |
| 1793 * If "len" is not NULL, the length of the number in characters is returned. | |
| 1794 * If "nptr" is not NULL, the signed result is returned in it. | |
| 1795 * If "unptr" is not NULL, the unsigned result is returned in it. | |
|
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|
1796 * If "what" contains STR2NR_BIN recognize binary numbers |
|
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|
1797 * If "what" contains STR2NR_OCT recognize octal numbers |
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1798 * If "what" contains STR2NR_HEX recognize hex numbers |
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|
1799 * If "what" contains STR2NR_FORCE always assume bin/oct/hex. |
|
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|
1800 * If "what" contains STR2NR_QUOTE ignore embedded single quotes |
|
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1801 * If maxlen > 0, check at a maximum maxlen chars. |
|
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1802 * If strict is TRUE, check the number strictly. return *len = 0 if fail. |
| 7 | 1803 */ |
| 1804 void | |
|
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|
1805 vim_str2nr( |
|
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|
1806 char_u *start, |
|
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|
1807 int *prep, // return: type of number 0 = decimal, 'x' |
|
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1808 // or 'X' is hex, '0', 'o' or 'O' is octal, |
|
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|
1809 // 'b' or 'B' is bin |
|
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1810 int *len, // return: detected length of number |
|
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|
1811 int what, // what numbers to recognize |
|
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1812 varnumber_T *nptr, // return: signed result |
|
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1813 uvarnumber_T *unptr, // return: unsigned result |
|
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|
1814 int maxlen, // max length of string to check |
|
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|
1815 int strict) // check strictly |
| 7 | 1816 { |
| 1817 char_u *ptr = start; | |
|
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|
1818 int pre = 0; // default is decimal |
| 7 | 1819 int negative = FALSE; |
|
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|
1820 uvarnumber_T un = 0; |
| 39 | 1821 int n; |
| 7 | 1822 |
|
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1823 if (len != NULL) |
|
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1824 *len = 0; |
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1825 |
| 7 | 1826 if (ptr[0] == '-') |
| 1827 { | |
| 1828 negative = TRUE; | |
| 1829 ++ptr; | |
| 1830 } | |
| 1831 | |
|
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|
1832 // Recognize hex, octal, and bin. |
| 6927 | 1833 if (ptr[0] == '0' && ptr[1] != '8' && ptr[1] != '9' |
| 1834 && (maxlen == 0 || maxlen > 1)) | |
| 7 | 1835 { |
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|
1836 pre = ptr[1]; |
|
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1837 if ((what & STR2NR_HEX) |
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|
1838 && (pre == 'X' || pre == 'x') && vim_isxdigit(ptr[2]) |
|
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|
1839 && (maxlen == 0 || maxlen > 2)) |
|
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|
1840 // hexadecimal |
|
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1841 ptr += 2; |
|
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|
1842 else if ((what & STR2NR_BIN) |
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|
1843 && (pre == 'B' || pre == 'b') && vim_isbdigit(ptr[2]) |
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1844 && (maxlen == 0 || maxlen > 2)) |
|
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|
1845 // binary |
|
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|
1846 ptr += 2; |
|
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|
1847 else if ((what & STR2NR_OOCT) |
|
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1848 && (pre == 'O' || pre == 'o') && vim_isodigit(ptr[2]) |
|
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|
1849 && (maxlen == 0 || maxlen > 2)) |
|
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|
1850 // octal with prefix "0o" |
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|
1851 ptr += 2; |
| 7 | 1852 else |
| 1853 { | |
|
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1854 // decimal or octal, default is decimal |
|
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1855 pre = 0; |
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1856 if (what & STR2NR_OCT) |
| 39 | 1857 { |
|
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|
1858 // Don't interpret "0", "08" or "0129" as octal. |
|
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1859 for (n = 1; n != maxlen && VIM_ISDIGIT(ptr[n]); ++n) |
| 39 | 1860 { |
| 1861 if (ptr[n] > '7') | |
| 1862 { | |
|
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|
1863 pre = 0; // can't be octal |
| 39 | 1864 break; |
| 1865 } | |
|
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|
1866 pre = '0'; // assume octal |
| 39 | 1867 } |
| 1868 } | |
| 7 | 1869 } |
| 1870 } | |
| 1871 | |
|
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|
1872 // Do the conversion manually to avoid sscanf() quirks. |
| 6927 | 1873 n = 1; |
|
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1874 if (pre == 'B' || pre == 'b' |
|
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1875 || ((what & STR2NR_BIN) && (what & STR2NR_FORCE))) |
|
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1876 { |
|
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1877 // bin |
|
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|
1878 if (pre != 0) |
|
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|
1879 n += 2; // skip over "0b" |
|
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|
1880 while ('0' <= *ptr && *ptr <= '1') |
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1881 { |
|
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|
1882 // avoid ubsan error for overflow |
|
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|
1883 if (un <= UVARNUM_MAX / 2) |
|
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|
1884 un = 2 * un + (uvarnumber_T)(*ptr - '0'); |
|
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|
1885 else |
|
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|
1886 un = UVARNUM_MAX; |
|
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|
1887 ++ptr; |
|
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1888 if (n++ == maxlen) |
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1889 break; |
|
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1890 if ((what & STR2NR_QUOTE) && *ptr == '\'' |
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1891 && '0' <= ptr[1] && ptr[1] <= '1') |
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1892 { |
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1893 ++ptr; |
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1894 if (n++ == maxlen) |
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1895 break; |
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1896 } |
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1897 } |
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1898 } |
|
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1899 else if (pre == 'O' || pre == 'o' || |
|
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1900 pre == '0' || ((what & STR2NR_OCT) && (what & STR2NR_FORCE))) |
| 7 | 1901 { |
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1902 // octal |
|
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1903 if (pre != 0 && pre != '0') |
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1904 n += 2; // skip over "0o" |
| 293 | 1905 while ('0' <= *ptr && *ptr <= '7') |
| 7 | 1906 { |
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1907 // avoid ubsan error for overflow |
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1908 if (un <= UVARNUM_MAX / 8) |
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1909 un = 8 * un + (uvarnumber_T)(*ptr - '0'); |
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1910 else |
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1911 un = UVARNUM_MAX; |
| 293 | 1912 ++ptr; |
| 6927 | 1913 if (n++ == maxlen) |
| 1914 break; | |
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1915 if ((what & STR2NR_QUOTE) && *ptr == '\'' |
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1916 && '0' <= ptr[1] && ptr[1] <= '7') |
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1917 { |
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1918 ++ptr; |
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1919 if (n++ == maxlen) |
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1920 break; |
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1921 } |
| 7 | 1922 } |
| 293 | 1923 } |
|
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1924 else if (pre != 0 || ((what & STR2NR_HEX) && (what & STR2NR_FORCE))) |
| 293 | 1925 { |
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1926 // hex |
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1927 if (pre != 0) |
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1928 n += 2; // skip over "0x" |
| 293 | 1929 while (vim_isxdigit(*ptr)) |
| 7 | 1930 { |
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1931 // avoid ubsan error for overflow |
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1932 if (un <= UVARNUM_MAX / 16) |
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1933 un = 16 * un + (uvarnumber_T)hex2nr(*ptr); |
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1934 else |
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1935 un = UVARNUM_MAX; |
| 293 | 1936 ++ptr; |
| 6927 | 1937 if (n++ == maxlen) |
| 1938 break; | |
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1939 if ((what & STR2NR_QUOTE) && *ptr == '\'' && vim_isxdigit(ptr[1])) |
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1940 { |
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1941 ++ptr; |
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1942 if (n++ == maxlen) |
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1943 break; |
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1944 } |
| 7 | 1945 } |
| 1946 } | |
| 1947 else | |
| 1948 { | |
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1949 // decimal |
| 7 | 1950 while (VIM_ISDIGIT(*ptr)) |
| 1951 { | |
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1952 uvarnumber_T digit = (uvarnumber_T)(*ptr - '0'); |
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1953 |
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1954 // avoid ubsan error for overflow |
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1955 if (un < UVARNUM_MAX / 10 |
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1956 || (un == UVARNUM_MAX / 10 && digit <= UVARNUM_MAX % 10)) |
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1957 un = 10 * un + digit; |
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1958 else |
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1959 un = UVARNUM_MAX; |
| 7 | 1960 ++ptr; |
| 6927 | 1961 if (n++ == maxlen) |
| 1962 break; | |
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1963 if ((what & STR2NR_QUOTE) && *ptr == '\'' && VIM_ISDIGIT(ptr[1])) |
|
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1964 { |
|
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1965 ++ptr; |
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1966 if (n++ == maxlen) |
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1967 break; |
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1968 } |
| 7 | 1969 } |
| 1970 } | |
|
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1971 |
|
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1972 // Check for an alphanumeric character immediately following, that is |
|
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1973 // most likely a typo. |
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1974 if (strict && n - 1 != maxlen && ASCII_ISALNUM(*ptr)) |
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1975 return; |
| 7 | 1976 |
|
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1977 if (prep != NULL) |
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1978 *prep = pre; |
| 7 | 1979 if (len != NULL) |
| 1980 *len = (int)(ptr - start); | |
| 1981 if (nptr != NULL) | |
| 16 | 1982 { |
|
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1983 if (negative) // account for leading '-' for decimal numbers |
|
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1984 { |
|
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1985 // avoid ubsan error for overflow |
|
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1986 if (un > VARNUM_MAX) |
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1987 *nptr = VARNUM_MIN; |
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1988 else |
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1989 *nptr = -(varnumber_T)un; |
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1990 } |
| 16 | 1991 else |
|
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1992 { |
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1993 if (un > VARNUM_MAX) |
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1994 un = VARNUM_MAX; |
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1995 *nptr = (varnumber_T)un; |
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1996 } |
| 16 | 1997 } |
| 7 | 1998 if (unptr != NULL) |
| 1999 *unptr = un; | |
| 2000 } | |
| 2001 | |
| 2002 /* | |
| 2003 * Return the value of a single hex character. | |
| 2004 * Only valid when the argument is '0' - '9', 'A' - 'F' or 'a' - 'f'. | |
| 2005 */ | |
| 2006 int | |
|
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2007 hex2nr(int c) |
| 7 | 2008 { |
| 2009 if (c >= 'a' && c <= 'f') | |
| 2010 return c - 'a' + 10; | |
| 2011 if (c >= 'A' && c <= 'F') | |
| 2012 return c - 'A' + 10; | |
| 2013 return c - '0'; | |
| 2014 } | |
| 2015 | |
|
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2016 #if defined(FEAT_TERMRESPONSE) || defined(FEAT_GUI_GTK) \ |
|
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2017 || defined(PROTO) || defined(FEAT_AUTOSHELLDIR) |
| 7 | 2018 /* |
| 2019 * Convert two hex characters to a byte. | |
| 2020 * Return -1 if one of the characters is not hex. | |
| 2021 */ | |
| 2022 int | |
|
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2023 hexhex2nr(char_u *p) |
| 7 | 2024 { |
| 2025 if (!vim_isxdigit(p[0]) || !vim_isxdigit(p[1])) | |
| 2026 return -1; | |
| 2027 return (hex2nr(p[0]) << 4) + hex2nr(p[1]); | |
| 2028 } | |
| 2029 #endif | |
| 2030 | |
| 2031 /* | |
| 2032 * Return TRUE if "str" starts with a backslash that should be removed. | |
|
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2033 * For MS-DOS, MSWIN and OS/2 this is only done when the character after the |
| 7 | 2034 * backslash is not a normal file name character. |
| 2035 * '$' is a valid file name character, we don't remove the backslash before | |
| 2036 * it. This means it is not possible to use an environment variable after a | |
| 2037 * backslash. "C:\$VIM\doc" is taken literally, only "$VIM\doc" works. | |
| 2038 * Although "\ name" is valid, the backslash in "Program\ files" must be | |
| 2039 * removed. Assume a file name doesn't start with a space. | |
| 2040 * For multi-byte names, never remove a backslash before a non-ascii | |
| 2041 * character, assume that all multi-byte characters are valid file name | |
| 2042 * characters. | |
| 2043 */ | |
| 2044 int | |
|
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2045 rem_backslash(char_u *str) |
| 7 | 2046 { |
| 2047 #ifdef BACKSLASH_IN_FILENAME | |
| 2048 return (str[0] == '\\' | |
| 2049 && str[1] < 0x80 | |
| 2050 && (str[1] == ' ' | |
| 2051 || (str[1] != NUL | |
| 2052 && str[1] != '*' | |
| 2053 && str[1] != '?' | |
| 2054 && !vim_isfilec(str[1])))); | |
| 2055 #else | |
| 2056 return (str[0] == '\\' && str[1] != NUL); | |
| 2057 #endif | |
| 2058 } | |
| 2059 | |
| 2060 /* | |
| 2061 * Halve the number of backslashes in a file name argument. | |
| 2062 * For MS-DOS we only do this if the character after the backslash | |
| 2063 * is not a normal file character. | |
| 2064 */ | |
| 2065 void | |
|
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2066 backslash_halve(char_u *p) |
| 7 | 2067 { |
| 2068 for ( ; *p; ++p) | |
| 2069 if (rem_backslash(p)) | |
| 1621 | 2070 STRMOVE(p, p + 1); |
| 7 | 2071 } |
| 2072 | |
| 2073 /* | |
| 2074 * backslash_halve() plus save the result in allocated memory. | |
|
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diff
changeset
|
2075 * However, returns "p" when out of memory. |
| 7 | 2076 */ |
| 2077 char_u * | |
|
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Christian Brabandt <cb@256bit.org>
parents:
7799
diff
changeset
|
2078 backslash_halve_save(char_u *p) |
| 7 | 2079 { |
| 2080 char_u *res; | |
| 2081 | |
| 2082 res = vim_strsave(p); | |
| 2083 if (res == NULL) | |
| 2084 return p; | |
| 2085 backslash_halve(res); | |
| 2086 return res; | |
| 2087 } | |
| 2088 | |
| 2089 #if (defined(EBCDIC) && defined(FEAT_POSTSCRIPT)) || defined(PROTO) | |
| 2090 /* | |
| 2091 * Table for EBCDIC to ASCII conversion unashamedly taken from xxd.c! | |
| 2092 * The first 64 entries have been added to map control characters defined in | |
| 2093 * ascii.h | |
| 2094 */ | |
| 2095 static char_u ebcdic2ascii_tab[256] = | |
| 2096 { | |
| 2097 0000, 0001, 0002, 0003, 0004, 0011, 0006, 0177, | |
| 2098 0010, 0011, 0012, 0013, 0014, 0015, 0016, 0017, | |
| 2099 0020, 0021, 0022, 0023, 0024, 0012, 0010, 0027, | |
| 2100 0030, 0031, 0032, 0033, 0033, 0035, 0036, 0037, | |
| 2101 0040, 0041, 0042, 0043, 0044, 0045, 0046, 0047, | |
| 2102 0050, 0051, 0052, 0053, 0054, 0055, 0056, 0057, | |
| 2103 0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067, | |
| 2104 0070, 0071, 0072, 0073, 0074, 0075, 0076, 0077, | |
| 2105 0040, 0240, 0241, 0242, 0243, 0244, 0245, 0246, | |
| 2106 0247, 0250, 0325, 0056, 0074, 0050, 0053, 0174, | |
| 2107 0046, 0251, 0252, 0253, 0254, 0255, 0256, 0257, | |
| 2108 0260, 0261, 0041, 0044, 0052, 0051, 0073, 0176, | |
| 2109 0055, 0057, 0262, 0263, 0264, 0265, 0266, 0267, | |
| 2110 0270, 0271, 0313, 0054, 0045, 0137, 0076, 0077, | |
| 2111 0272, 0273, 0274, 0275, 0276, 0277, 0300, 0301, | |
| 2112 0302, 0140, 0072, 0043, 0100, 0047, 0075, 0042, | |
| 2113 0303, 0141, 0142, 0143, 0144, 0145, 0146, 0147, | |
| 2114 0150, 0151, 0304, 0305, 0306, 0307, 0310, 0311, | |
| 2115 0312, 0152, 0153, 0154, 0155, 0156, 0157, 0160, | |
| 2116 0161, 0162, 0136, 0314, 0315, 0316, 0317, 0320, | |
| 2117 0321, 0345, 0163, 0164, 0165, 0166, 0167, 0170, | |
| 2118 0171, 0172, 0322, 0323, 0324, 0133, 0326, 0327, | |
| 2119 0330, 0331, 0332, 0333, 0334, 0335, 0336, 0337, | |
| 2120 0340, 0341, 0342, 0343, 0344, 0135, 0346, 0347, | |
| 2121 0173, 0101, 0102, 0103, 0104, 0105, 0106, 0107, | |
| 2122 0110, 0111, 0350, 0351, 0352, 0353, 0354, 0355, | |
| 2123 0175, 0112, 0113, 0114, 0115, 0116, 0117, 0120, | |
| 2124 0121, 0122, 0356, 0357, 0360, 0361, 0362, 0363, | |
| 2125 0134, 0237, 0123, 0124, 0125, 0126, 0127, 0130, | |
| 2126 0131, 0132, 0364, 0365, 0366, 0367, 0370, 0371, | |
| 2127 0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067, | |
| 2128 0070, 0071, 0372, 0373, 0374, 0375, 0376, 0377 | |
| 2129 }; | |
| 2130 | |
| 2131 /* | |
| 2132 * Convert a buffer worth of characters from EBCDIC to ASCII. Only useful if | |
| 2133 * wanting 7-bit ASCII characters out the other end. | |
| 2134 */ | |
| 2135 void | |
|
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Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
2136 ebcdic2ascii(char_u *buffer, int len) |
| 7 | 2137 { |
| 2138 int i; | |
| 2139 | |
| 2140 for (i = 0; i < len; i++) | |
| 2141 buffer[i] = ebcdic2ascii_tab[buffer[i]]; | |
| 2142 } | |
| 2143 #endif |