usr.bin/localedef/charmap.c

   1 /*
   2  * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
   3  * Copyright 2015 John Marino <draco@marino.st>
   4  *
   5  * This source code is derived from the illumos localedef command, and
   6  * provided under BSD-style license terms by Nexenta Systems, Inc.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  19  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  22  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 /*
  32  * CHARMAP file handling for localedef.
  33  */
  34
  35 #include <sys/types.h>
  36 #include <sys/tree.h>
  37
  38 #include <stdio.h>
  39 #include <stdlib.h>
  40 #include <string.h>
  41 #include <limits.h>
  42 #include <unistd.h>
  43 #include <stddef.h>
  44 #include <unistd.h>
  45 #include "localedef.h"
  46 #include "parser.h"
  47
  48
  49 typedef struct charmap {
  50         const char *name;
  51         wchar_t wc;
  52         RB_ENTRY(charmap) rb_sym;
  53         RB_ENTRY(charmap) rb_wc;
  54 } charmap_t;
  55
  56 static int cmap_compare_sym(const void *n1, const void *n2);
  57 static int cmap_compare_wc(const void *n1, const void *n2);
  58
  59 static RB_HEAD(cmap_sym, charmap) cmap_sym;
  60 static RB_HEAD(cmap_wc, charmap) cmap_wc;
  61
  62 RB_PROTOTYPE_STATIC(cmap_sym, charmap, rb_sym, cmap_compare_sym);
  63 RB_PROTOTYPE_STATIC(cmap_wc, charmap, rb_wc, cmap_compare_wc);
  64
  65 RB_GENERATE(cmap_sym, charmap, rb_sym, cmap_compare_sym);
  66 RB_GENERATE(cmap_wc, charmap, rb_wc, cmap_compare_wc);
  67
  68 /*
  69  * Array of POSIX specific portable characters.
  70  */
  71
  72 static const struct {
  73         const char *name;
  74         int     ch;
  75 } portable_chars[] = {
  76         { "NUL",                '\0' },
  77         { "alert",              '\a' },
  78         { "backspace",          '\b' },
  79         { "tab",                '\t' },
  80         { "carriage-return",    '\r' },
  81         { "newline",            '\n' },
  82         { "vertical-tab",       '\v' },
  83         { "form-feed",          '\f' },
  84         { "space",              ' ' },
  85         { "exclamation-mark",   '!' },
  86         { "quotation-mark",     '"' },
  87         { "number-sign",        '#' },
  88         { "dollar-sign",        '$' },
  89         { "percent-sign",       '%' },
  90         { "ampersand",          '&' },
  91         { "apostrophe",         '\'' },
  92         { "left-parenthesis",   '(' },
  93         { "right-parenthesis",  '(' },
  94         { "asterisk",           '*' },
  95         { "plus-sign",          '+' },
  96         { "comma",               ','},
  97         { "hyphen-minus",       '-' },
  98         { "hyphen",             '-' },
  99         { "full-stop",          '.' },
 100         { "period",             '.' },
 101         { "slash",              '/' },
 102         { "solidus",            '/' },
 103         { "zero",               '0' },
 104         { "one",                '1' },
 105         { "two",                '2' },
 106         { "three",              '3' },
 107         { "four",               '4' },
 108         { "five",               '5' },
 109         { "six",                '6' },
 110         { "seven",              '7' },
 111         { "eight",              '8' },
 112         { "nine",               '9' },
 113         { "colon",              ':' },
 114         { "semicolon",          ';' },
 115         { "less-than-sign",     '<' },
 116         { "equals-sign",        '=' },
 117         { "greater-than-sign",  '>' },
 118         { "question-mark",      '?' },
 119         { "commercial-at",      '@' },
 120         { "left-square-bracket", '[' },
 121         { "backslash",          '\\' },
 122         { "reverse-solidus",    '\\' },
 123         { "right-square-bracket", ']' },
 124         { "circumflex",         '^' },
 125         { "circumflex-accent",  '^' },
 126         { "low-line",           '_' },
 127         { "underscore",         '_' },
 128         { "grave-accent",       '`' },
 129         { "left-brace",         '{' },
 130         { "left-curly-bracket", '{' },
 131         { "vertical-line",      '|' },
 132         { "right-brace",        '}' },
 133         { "right-curly-bracket", '}' },
 134         { "tilde",              '~' },
 135         { "A", 'A' },
 136         { "B", 'B' },
 137         { "C", 'C' },
 138         { "D", 'D' },
 139         { "E", 'E' },
 140         { "F", 'F' },
 141         { "G", 'G' },
 142         { "H", 'H' },
 143         { "I", 'I' },
 144         { "J", 'J' },
 145         { "K", 'K' },
 146         { "L", 'L' },
 147         { "M", 'M' },
 148         { "N", 'N' },
 149         { "O", 'O' },
 150         { "P", 'P' },
 151         { "Q", 'Q' },
 152         { "R", 'R' },
 153         { "S", 'S' },
 154         { "T", 'T' },
 155         { "U", 'U' },
 156         { "V", 'V' },
 157         { "W", 'W' },
 158         { "X", 'X' },
 159         { "Y", 'Y' },
 160         { "Z", 'Z' },
 161         { "a", 'a' },
 162         { "b", 'b' },
 163         { "c", 'c' },
 164         { "d", 'd' },
 165         { "e", 'e' },
 166         { "f", 'f' },
 167         { "g", 'g' },
 168         { "h", 'h' },
 169         { "i", 'i' },
 170         { "j", 'j' },
 171         { "k", 'k' },
 172         { "l", 'l' },
 173         { "m", 'm' },
 174         { "n", 'n' },
 175         { "o", 'o' },
 176         { "p", 'p' },
 177         { "q", 'q' },
 178         { "r", 'r' },
 179         { "s", 's' },
 180         { "t", 't' },
 181         { "u", 'u' },
 182         { "v", 'v' },
 183         { "w", 'w' },
 184         { "x", 'x' },
 185         { "y", 'y' },
 186         { "z", 'z' },
 187         { NULL, 0 }
 188 };
 189
 190 static int
 191 cmap_compare_sym(const void *n1, const void *n2)
 192 {
 193         const charmap_t *c1 = n1;
 194         const charmap_t *c2 = n2;
 195         int rv;
 196
 197         rv = strcmp(c1->name, c2->name);
 198         return ((rv < 0) ? -1 : (rv > 0) ? 1 : 0);
 199 }
 200
 201 static int
 202 cmap_compare_wc(const void *n1, const void *n2)
 203 {
 204         const charmap_t *c1 = n1;
 205         const charmap_t *c2 = n2;
 206
 207         return ((c1->wc < c2->wc) ? -1 : (c1->wc > c2->wc) ? 1 : 0);
 208 }
 209
 210 void
 211 init_charmap(void)
 212 {
 213         RB_INIT(&cmap_sym);
 214
 215         RB_INIT(&cmap_wc);
 216 }
 217
 218 static void
 219 add_charmap_impl(const char *sym, wchar_t wc, int nodups)
 220 {
 221         charmap_t       srch;
 222         charmap_t       *n = NULL;
 223
 224         srch.wc = wc;
 225         srch.name = sym;
 226
 227         /*
 228          * also possibly insert the wide mapping, although note that there
 229          * can only be one of these per wide character code.
 230          */
 231         if ((wc != (wchar_t)-1) && ((RB_FIND(cmap_wc, &cmap_wc, &srch)) == NULL)) {
 232                 if ((n = calloc(1, sizeof (*n))) == NULL) {
 233                         errf("out of memory");
 234                         return;
 235                 }
 236                 n->wc = wc;
 237                 RB_INSERT(cmap_wc, &cmap_wc, n);
 238         }
 239
 240         if (sym) {
 241                 if (RB_FIND(cmap_sym, &cmap_sym, &srch) != NULL) {
 242                         if (nodups) {
 243                                 errf("duplicate character definition");
 244                         }
 245                         return;
 246                 }
 247                 if ((n == NULL) && ((n = calloc(1, sizeof (*n))) == NULL)) {
 248                         errf("out of memory");
 249                         return;
 250                 }
 251                 n->wc = wc;
 252                 n->name = sym;
 253
 254                 RB_INSERT(cmap_sym, &cmap_sym, n);
 255         }
 256 }
 257
 258 void
 259 add_charmap(const char *sym, int c)
 260 {
 261         add_charmap_impl(sym, c, 1);
 262 }
 263
 264 void
 265 add_charmap_undefined(char *sym)
 266 {
 267         charmap_t srch;
 268         charmap_t *cm = NULL;
 269
 270         srch.name = sym;
 271         cm = RB_FIND(cmap_sym, &cmap_sym, &srch);
 272
 273         if ((undefok == 0) && ((cm == NULL) || (cm->wc == (wchar_t)-1))) {
 274                 warn("undefined symbol <%s>", sym);
 275                 add_charmap_impl(sym, -1, 0);
 276         } else {
 277                 free(sym);
 278         }
 279 }
 280
 281 void
 282 add_charmap_range(char *s, char *e, int wc)
 283 {
 284         int     ls, le;
 285         int     si;
 286         int     sn, en;
 287         int     i;
 288
 289         static const char *digits = "0123456789";
 290
 291         ls = strlen(s);
 292         le = strlen(e);
 293
 294         if (((si = strcspn(s, digits)) == 0) || (si == ls) ||
 295             (strncmp(s, e, si) != 0) ||
 296             ((int)strspn(s + si, digits) != (ls - si)) ||
 297             ((int)strspn(e + si, digits) != (le - si)) ||
 298             ((sn = atoi(s + si)) > ((en = atoi(e + si))))) {
 299                 errf("malformed charmap range");
 300                 return;
 301         }
 302
 303         s[si] = 0;
 304
 305         for (i = sn; i <= en; i++) {
 306                 char *nn;
 307                 (void) asprintf(&nn, "%s%0*u", s, ls - si, i);
 308                 if (nn == NULL) {
 309                         errf("out of memory");
 310                         return;
 311                 }
 312
 313                 add_charmap_impl(nn, wc, 1);
 314                 wc++;
 315         }
 316         free(s);
 317         free(e);
 318 }
 319
 320 void
 321 add_charmap_char(const char *name, int val)
 322 {
 323         add_charmap_impl(name, val, 0);
 324 }
 325
 326 /*
 327  * POSIX insists that certain entries be present, even when not in the
 328  * orginal charmap file.
 329  */
 330 void
 331 add_charmap_posix(void)
 332 {
 333         int     i;
 334
 335         for (i = 0; portable_chars[i].name; i++) {
 336                 add_charmap_char(portable_chars[i].name, portable_chars[i].ch);
 337         }
 338 }
 339
 340 int
 341 lookup_charmap(const char *sym, wchar_t *wc)
 342 {
 343         charmap_t       srch;
 344         charmap_t       *n;
 345
 346         srch.name = sym;
 347         n = RB_FIND(cmap_sym, &cmap_sym, &srch);
 348         if (n && n->wc != (wchar_t)-1) {
 349                 if (wc)
 350                         *wc = n->wc;
 351                 return (0);
 352         }
 353         return (-1);
 354 }
 355
 356 int
 357 check_charmap(wchar_t wc)
 358 {
 359         charmap_t srch;
 360
 361         srch.wc = wc;
 362         return (RB_FIND(cmap_wc, &cmap_wc, &srch) ? 0 : -1);
 363 }