usr.bin/localedef/ctype.c

   1 /*-
   2  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
   3  * Copyright 2012 Garrett D'Amore <garrett@damore.org>  All rights reserved.
   4  * Copyright 2015 John Marino <draco@marino.st>
   5  *
   6  * This source code is derived from the illumos localedef command, and
   7  * provided under BSD-style license terms by Nexenta Systems, Inc.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  *
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  20  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  23  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 /*
  33  * LC_CTYPE database generation routines for localedef.
  34  */
  35 #include <sys/cdefs.h>
  36 __FBSDID("$FreeBSD$");
  37
  38 #include <sys/tree.h>
  39
  40 #include <stdio.h>
  41 #include <stdlib.h>
  42 #include <stddef.h>
  43 #include <string.h>
  44 #include <sys/types.h>
  45 #include <wchar.h>
  46 #include <ctype.h>
  47 #include <wctype.h>
  48 #include <unistd.h>
  49 #include "localedef.h"
  50 #include "parser.h"
  51 #include "runefile.h"
  52
  53
  54 /* Needed for bootstrapping, _CTYPE_N */
  55 #ifndef _CTYPE_N
  56 #define _CTYPE_N       0x00400000L
  57 #endif
  58
  59 #define _ISUPPER        _CTYPE_U
  60 #define _ISLOWER        _CTYPE_L
  61 #define _ISDIGIT        _CTYPE_D
  62 #define _ISXDIGIT       _CTYPE_X
  63 #define _ISSPACE        _CTYPE_S
  64 #define _ISBLANK        _CTYPE_B
  65 #define _ISALPHA        _CTYPE_A
  66 #define _ISPUNCT        _CTYPE_P
  67 #define _ISGRAPH        _CTYPE_G
  68 #define _ISPRINT        _CTYPE_R
  69 #define _ISCNTRL        _CTYPE_C
  70 #define _E1             _CTYPE_Q
  71 #define _E2             _CTYPE_I
  72 #define _E3             0
  73 #define _E4             _CTYPE_N
  74 #define _E5             _CTYPE_T
  75
  76 static wchar_t          last_ctype;
  77 static int ctype_compare(const void *n1, const void *n2);
  78
  79 typedef struct ctype_node {
  80         wchar_t wc;
  81         int32_t ctype;
  82         int32_t toupper;
  83         int32_t tolower;
  84         RB_ENTRY(ctype_node) entry;
  85 } ctype_node_t;
  86
  87 static RB_HEAD(ctypes, ctype_node) ctypes;
  88 RB_GENERATE_STATIC(ctypes, ctype_node, entry, ctype_compare);
  89
  90 static int
  91 ctype_compare(const void *n1, const void *n2)
  92 {
  93         const ctype_node_t *c1 = n1;
  94         const ctype_node_t *c2 = n2;
  95
  96         return (c1->wc < c2->wc ? -1 : c1->wc > c2->wc ? 1 : 0);
  97 }
  98
  99 void
 100 init_ctype(void)
 101 {
 102         RB_INIT(&ctypes);
 103 }
 104
 105
 106 static void
 107 add_ctype_impl(ctype_node_t *ctn)
 108 {
 109         switch (last_kw) {
 110         case T_ISUPPER:
 111                 ctn->ctype |= (_ISUPPER | _ISALPHA | _ISGRAPH | _ISPRINT);
 112                 break;
 113         case T_ISLOWER:
 114                 ctn->ctype |= (_ISLOWER | _ISALPHA | _ISGRAPH | _ISPRINT);
 115                 break;
 116         case T_ISALPHA:
 117                 ctn->ctype |= (_ISALPHA | _ISGRAPH | _ISPRINT);
 118                 break;
 119         case T_ISDIGIT:
 120                 ctn->ctype |= (_ISDIGIT | _ISGRAPH | _ISPRINT | _ISXDIGIT | _E4);
 121                 break;
 122         case T_ISSPACE:
 123                 ctn->ctype |= _ISSPACE;
 124                 break;
 125         case T_ISCNTRL:
 126                 ctn->ctype |= _ISCNTRL;
 127                 break;
 128         case T_ISGRAPH:
 129                 ctn->ctype |= (_ISGRAPH | _ISPRINT);
 130                 break;
 131         case T_ISPRINT:
 132                 ctn->ctype |= _ISPRINT;
 133                 break;
 134         case T_ISPUNCT:
 135                 ctn->ctype |= (_ISPUNCT | _ISGRAPH | _ISPRINT);
 136                 break;
 137         case T_ISXDIGIT:
 138                 ctn->ctype |= (_ISXDIGIT | _ISPRINT);
 139                 break;
 140         case T_ISBLANK:
 141                 ctn->ctype |= (_ISBLANK | _ISSPACE);
 142                 break;
 143         case T_ISPHONOGRAM:
 144                 ctn->ctype |= (_E1 | _ISPRINT | _ISGRAPH);
 145                 break;
 146         case T_ISIDEOGRAM:
 147                 ctn->ctype |= (_E2 | _ISPRINT | _ISGRAPH);
 148                 break;
 149         case T_ISENGLISH:
 150                 ctn->ctype |= (_E3 | _ISPRINT | _ISGRAPH);
 151                 break;
 152         case T_ISNUMBER:
 153                 ctn->ctype |= (_E4 | _ISPRINT | _ISGRAPH);
 154                 break;
 155         case T_ISSPECIAL:
 156                 ctn->ctype |= (_E5 | _ISPRINT | _ISGRAPH);
 157                 break;
 158         case T_ISALNUM:
 159                 /*
 160                  * We can't do anything with this.  The character
 161                  * should already be specified as a digit or alpha.
 162                  */
 163                 break;
 164         default:
 165                 errf("not a valid character class");
 166         }
 167 }
 168
 169 static ctype_node_t *
 170 get_ctype(wchar_t wc)
 171 {
 172         ctype_node_t    srch;
 173         ctype_node_t    *ctn;
 174
 175         srch.wc = wc;
 176         if ((ctn = RB_FIND(ctypes, &ctypes, &srch)) == NULL) {
 177                 if ((ctn = calloc(1, sizeof (*ctn))) == NULL) {
 178                         errf("out of memory");
 179                         return (NULL);
 180                 }
 181                 ctn->wc = wc;
 182
 183                 RB_INSERT(ctypes, &ctypes, ctn);
 184         }
 185         return (ctn);
 186 }
 187
 188 void
 189 add_ctype(int val)
 190 {
 191         ctype_node_t    *ctn;
 192
 193         if ((ctn = get_ctype(val)) == NULL) {
 194                 INTERR;
 195                 return;
 196         }
 197         add_ctype_impl(ctn);
 198         last_ctype = ctn->wc;
 199 }
 200
 201 void
 202 add_ctype_range(wchar_t end)
 203 {
 204         ctype_node_t    *ctn;
 205         wchar_t         cur;
 206
 207         if (end < last_ctype) {
 208                 errf("malformed character range (%u ... %u))",
 209                     last_ctype, end);
 210                 return;
 211         }
 212         for (cur = last_ctype + 1; cur <= end; cur++) {
 213                 if ((ctn = get_ctype(cur)) == NULL) {
 214                         INTERR;
 215                         return;
 216                 }
 217                 add_ctype_impl(ctn);
 218         }
 219         last_ctype = end;
 220
 221 }
 222
 223 /*
 224  * A word about widths: if the width mask is specified, then libc
 225  * unconditionally honors it.  Otherwise, it assumes printable
 226  * characters have width 1, and non-printable characters have width
 227  * -1 (except for NULL which is special with width 0).  Hence, we have
 228  * no need to inject defaults here -- the "default" unset value of 0
 229  * indicates that libc should use its own logic in wcwidth as described.
 230  */
 231 void
 232 add_width(int wc, int width)
 233 {
 234         ctype_node_t    *ctn;
 235
 236         if ((ctn = get_ctype(wc)) == NULL) {
 237                 INTERR;
 238                 return;
 239         }
 240         ctn->ctype &= ~(_CTYPE_SWM);
 241         switch (width) {
 242         case 0:
 243                 ctn->ctype |= _CTYPE_SW0;
 244                 break;
 245         case 1:
 246                 ctn->ctype |= _CTYPE_SW1;
 247                 break;
 248         case 2:
 249                 ctn->ctype |= _CTYPE_SW2;
 250                 break;
 251         case 3:
 252                 ctn->ctype |= _CTYPE_SW3;
 253                 break;
 254         }
 255 }
 256
 257 void
 258 add_width_range(int start, int end, int width)
 259 {
 260         for (; start <= end; start++) {
 261                 add_width(start, width);
 262         }
 263 }
 264
 265 void
 266 add_caseconv(int val, int wc)
 267 {
 268         ctype_node_t    *ctn;
 269
 270         ctn = get_ctype(val);
 271         if (ctn == NULL) {
 272                 INTERR;
 273                 return;
 274         }
 275
 276         switch (last_kw) {
 277         case T_TOUPPER:
 278                 ctn->toupper = wc;
 279                 break;
 280         case T_TOLOWER:
 281                 ctn->tolower = wc;
 282                 break;
 283         default:
 284                 INTERR;
 285                 break;
 286         }
 287 }
 288
 289 void
 290 dump_ctype(void)
 291 {
 292         FILE            *f;
 293         _FileRuneLocale rl;
 294         ctype_node_t    *ctn, *last_ct, *last_lo, *last_up;
 295         _FileRuneEntry  *ct = NULL;
 296         _FileRuneEntry  *lo = NULL;
 297         _FileRuneEntry  *up = NULL;
 298         wchar_t         wc;
 299
 300         (void) memset(&rl, 0, sizeof (rl));
 301         last_ct = NULL;
 302         last_lo = NULL;
 303         last_up = NULL;
 304
 305         if ((f = open_category()) == NULL)
 306                 return;
 307
 308         (void) memcpy(rl.magic, _FILE_RUNE_MAGIC_1, 8);
 309         (void) strlcpy(rl.encoding, get_wide_encoding(), sizeof (rl.encoding));
 310
 311         /*
 312          * Initialize the identity map.
 313          */
 314         for (wc = 0; (unsigned)wc < _CACHED_RUNES; wc++) {
 315                 rl.maplower[wc] = wc;
 316                 rl.mapupper[wc] = wc;
 317         }
 318
 319         RB_FOREACH(ctn, ctypes, &ctypes) {
 320                 int conflict = 0;
 321
 322                 wc = ctn->wc;
 323
 324                 /*
 325                  * POSIX requires certain portable characters have
 326                  * certain types.  Add them if they are missing.
 327                  */
 328                 if ((wc >= 1) && (wc <= 127)) {
 329                         if ((wc >= 'A') && (wc <= 'Z'))
 330                                 ctn->ctype |= _ISUPPER;
 331                         if ((wc >= 'a') && (wc <= 'z'))
 332                                 ctn->ctype |= _ISLOWER;
 333                         if ((wc >= '0') && (wc <= '9'))
 334                                 ctn->ctype |= _ISDIGIT;
 335                         if (wc == ' ')
 336                                 ctn->ctype |= _ISPRINT;
 337                         if (strchr(" \f\n\r\t\v", (char)wc) != NULL)
 338                                 ctn->ctype |= _ISSPACE;
 339                         if (strchr("0123456789ABCDEFabcdef", (char)wc) != NULL)
 340                                 ctn->ctype |= _ISXDIGIT;
 341                         if (strchr(" \t", (char)wc))
 342                                 ctn->ctype |= _ISBLANK;
 343
 344                         /*
 345                          * Technically these settings are only
 346                          * required for the C locale.  However, it
 347                          * turns out that because of the historical
 348                          * version of isprint(), we need them for all
 349                          * locales as well.  Note that these are not
 350                          * necessarily valid punctation characters in
 351                          * the current language, but ispunct() needs
 352                          * to return TRUE for them.
 353                          */
 354                         if (strchr("!\"'#$%&()*+,-./:;<=>?@[\\]^_`{|}~",
 355                             (char)wc))
 356                                 ctn->ctype |= _ISPUNCT;
 357                 }
 358
 359                 /*
 360                  * POSIX also requires that certain types imply
 361                  * others.  Add any inferred types here.
 362                  */
 363                 if (ctn->ctype & (_ISUPPER |_ISLOWER))
 364                         ctn->ctype |= _ISALPHA;
 365                 if (ctn->ctype & _ISDIGIT)
 366                         ctn->ctype |= _ISXDIGIT;
 367                 if (ctn->ctype & _ISBLANK)
 368                         ctn->ctype |= _ISSPACE;
 369                 if (ctn->ctype & (_ISALPHA|_ISDIGIT|_ISXDIGIT))
 370                         ctn->ctype |= _ISGRAPH;
 371                 if (ctn->ctype & _ISGRAPH)
 372                         ctn->ctype |= _ISPRINT;
 373
 374                 /*
 375                  * Finally, POSIX requires that certain combinations
 376                  * are invalid.  We don't flag this as a fatal error,
 377                  * but we will warn about.
 378                  */
 379                 if ((ctn->ctype & _ISALPHA) &&
 380                     (ctn->ctype & (_ISPUNCT|_ISDIGIT)))
 381                         conflict++;
 382                 if ((ctn->ctype & _ISPUNCT) &&
 383                     (ctn->ctype & (_ISDIGIT|_ISALPHA|_ISXDIGIT)))
 384                         conflict++;
 385                 if ((ctn->ctype & _ISSPACE) && (ctn->ctype & _ISGRAPH))
 386                         conflict++;
 387                 if ((ctn->ctype & _ISCNTRL) && (ctn->ctype & _ISPRINT))
 388                         conflict++;
 389                 if ((wc == ' ') && (ctn->ctype & (_ISPUNCT|_ISGRAPH)))
 390                         conflict++;
 391
 392                 if (conflict) {
 393                         warn("conflicting classes for character 0x%x (%x)",
 394                             wc, ctn->ctype);
 395                 }
 396                 /*
 397                  * Handle the lower 256 characters using the simple
 398                  * optimization.  Note that if we have not defined the
 399                  * upper/lower case, then we identity map it.
 400                  */
 401                 if ((unsigned)wc < _CACHED_RUNES) {
 402                         rl.runetype[wc] = ctn->ctype;
 403                         if (ctn->tolower)
 404                                 rl.maplower[wc] = ctn->tolower;
 405                         if (ctn->toupper)
 406                                 rl.mapupper[wc] = ctn->toupper;
 407                         continue;
 408                 }
 409
 410                 if ((last_ct != NULL) && (last_ct->ctype == ctn->ctype) &&
 411                     (last_ct->wc + 1 == wc)) {
 412                         ct[rl.runetype_ext_nranges-1].max = wc;
 413                 } else {
 414                         rl.runetype_ext_nranges++;
 415                         ct = realloc(ct,
 416                             sizeof (*ct) * rl.runetype_ext_nranges);
 417                         ct[rl.runetype_ext_nranges - 1].min = wc;
 418                         ct[rl.runetype_ext_nranges - 1].max = wc;
 419                         ct[rl.runetype_ext_nranges - 1].map = ctn->ctype;
 420                 }
 421                 last_ct = ctn;
 422                 if (ctn->tolower == 0) {
 423                         last_lo = NULL;
 424                 } else if ((last_lo != NULL) &&
 425                     (last_lo->tolower + 1 == ctn->tolower)) {
 426                         lo[rl.maplower_ext_nranges-1].max = wc;
 427                         last_lo = ctn;
 428                 } else {
 429                         rl.maplower_ext_nranges++;
 430                         lo = realloc(lo,
 431                             sizeof (*lo) * rl.maplower_ext_nranges);
 432                         lo[rl.maplower_ext_nranges - 1].min = wc;
 433                         lo[rl.maplower_ext_nranges - 1].max = wc;
 434                         lo[rl.maplower_ext_nranges - 1].map = ctn->tolower;
 435                         last_lo = ctn;
 436                 }
 437
 438                 if (ctn->toupper == 0) {
 439                         last_up = NULL;
 440                 } else if ((last_up != NULL) &&
 441                     (last_up->toupper + 1 == ctn->toupper)) {
 442                         up[rl.mapupper_ext_nranges-1].max = wc;
 443                         last_up = ctn;
 444                 } else {
 445                         rl.mapupper_ext_nranges++;
 446                         up = realloc(up,
 447                             sizeof (*up) * rl.mapupper_ext_nranges);
 448                         up[rl.mapupper_ext_nranges - 1].min = wc;
 449                         up[rl.mapupper_ext_nranges - 1].max = wc;
 450                         up[rl.mapupper_ext_nranges - 1].map = ctn->toupper;
 451                         last_up = ctn;
 452                 }
 453         }
 454
 455         if ((wr_category(&rl, sizeof (rl), f) < 0) ||
 456             (wr_category(ct, sizeof (*ct) * rl.runetype_ext_nranges, f) < 0) ||
 457             (wr_category(lo, sizeof (*lo) * rl.maplower_ext_nranges, f) < 0) ||
 458             (wr_category(up, sizeof (*up) * rl.mapupper_ext_nranges, f) < 0)) {
 459                 return;
 460         }
 461
 462         close_category(f);
 463 }