1 /* Copyright (C) 1995-1999, 2000-2003 Free Software Foundation, Inc. 2 Contributed by Ulrich Drepper <drepper (at) gnu.ai.mit.edu>, 1995. 3 4 This program is free software; you can redistribute it and/or modify it 5 under the terms of the GNU Library General Public License as published 6 by the Free Software Foundation; either version 2, or (at your option) 7 any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Library General Public License for more details. 13 14 You should have received a copy of the GNU Library General Public 15 License along with this program; if not, write to the Free Software 16 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 17 USA. */ 18 19 /* Tell glibc's <string.h> to provide a prototype for stpcpy(). 20 This must come before <config.h> because <config.h> may include 21 <features.h>, and once <features.h> has been included, it's too late. */ 22 #ifndef _GNU_SOURCE 23 # define _GNU_SOURCE 1 24 #endif 25 26 #ifdef HAVE_CONFIG_H 27 # include <config.h> 28 #endif 29 30 #include <string.h> 31 32 #if defined _LIBC || defined HAVE_ARGZ_H 33 # include <argz.h> 34 #endif 35 #include <ctype.h> 36 #include <sys/types.h> 37 #include <stdlib.h> 38 39 #include "loadinfo.h" 40 41 /* On some strange systems still no definition of NULL is found. Sigh! */ 42 #ifndef NULL 43 # if defined __STDC__ && __STDC__ 44 # define NULL ((void *) 0) 45 # else 46 # define NULL 0 47 # endif 48 #endif 49 50 /* @@ end of prolog @@ */ 51 52 #ifdef _LIBC 53 /* Rename the non ANSI C functions. This is required by the standard 54 because some ANSI C functions will require linking with this object 55 file and the name space must not be polluted. */ 56 # ifndef stpcpy 57 # define stpcpy(dest, src) __stpcpy(dest, src) 58 # endif 59 #else 60 # ifndef HAVE_STPCPY 61 static char *stpcpy (char *dest, const char *src); 62 # endif 63 #endif 64 65 /* Pathname support. 66 ISSLASH(C) tests whether C is a directory separator character. 67 IS_ABSOLUTE_PATH(P) tests whether P is an absolute path. If it is not, 68 it may be concatenated to a directory pathname. 69 */ 70 #if defined _WIN32 || defined __WIN32__ || defined __EMX__ || defined __DJGPP__ 71 /* Win32, OS/2, DOS */ 72 # define ISSLASH(C) ((C) == '/' || (C) == '\\') 73 # define HAS_DEVICE(P) \ 74 ((((P)[0] >= 'A' && (P)[0] <= 'Z') || ((P)[0] >= 'a' && (P)[0] <= 'z')) \ 75 && (P)[1] == ':') 76 # define IS_ABSOLUTE_PATH(P) (ISSLASH ((P)[0]) || HAS_DEVICE (P)) 77 #else 78 /* Unix */ 79 # define ISSLASH(C) ((C) == '/') 80 # define IS_ABSOLUTE_PATH(P) ISSLASH ((P)[0]) 81 #endif 82 83 /* Define function which are usually not available. */ 84 85 #if !defined _LIBC && !defined HAVE___ARGZ_COUNT 86 /* Returns the number of strings in ARGZ. */ 87 static size_t 88 argz_count__ (const char *argz, size_t len) 89 { 90 size_t count = 0; 91 while (len > 0) 92 { 93 size_t part_len = strlen (argz); 94 argz += part_len + 1; 95 len -= part_len + 1; 96 count++; 97 } 98 return count; 99 } 100 # undef __argz_count 101 # define __argz_count(argz, len) argz_count__ (argz, len) 102 #else 103 # ifdef _LIBC 104 # define __argz_count(argz, len) INTUSE(__argz_count) (argz, len) 105 # endif 106 #endif /* !_LIBC && !HAVE___ARGZ_COUNT */ 107 108 #if !defined _LIBC && !defined HAVE___ARGZ_STRINGIFY 109 /* Make '\0' separated arg vector ARGZ printable by converting all the '\0's 110 except the last into the character SEP. */ 111 static void 112 argz_stringify__ (char *argz, size_t len, int sep) 113 { 114 while (len > 0) 115 { 116 size_t part_len = strlen (argz); 117 argz += part_len; 118 len -= part_len + 1; 119 if (len > 0) 120 *argz++ = sep; 121 } 122 } 123 # undef __argz_stringify 124 # define __argz_stringify(argz, len, sep) argz_stringify__ (argz, len, sep) 125 #else 126 # ifdef _LIBC 127 # define __argz_stringify(argz, len, sep) \ 128 INTUSE(__argz_stringify) (argz, len, sep) 129 # endif 130 #endif /* !_LIBC && !HAVE___ARGZ_STRINGIFY */ 131 132 #if !defined _LIBC && !defined HAVE___ARGZ_NEXT 133 static char * 134 argz_next__ (char *argz, size_t argz_len, const char *entry) 135 { 136 if (entry) 137 { 138 if (entry < argz + argz_len) 139 entry = strchr (entry, '\0') + 1; 140 141 return entry >= argz + argz_len ? NULL : (char *) entry; 142 } 143 else 144 if (argz_len > 0) 145 return argz; 146 else 147 return 0; 148 } 149 # undef __argz_next 150 # define __argz_next(argz, len, entry) argz_next__ (argz, len, entry) 151 #endif /* !_LIBC && !HAVE___ARGZ_NEXT */ 152 153 154 /* Return number of bits set in X. */ 155 static inline int 156 pop (int x) 157 { 158 /* We assume that no more than 16 bits are used. */ 159 x = ((x & ~0x5555) >> 1) + (x & 0x5555); 160 x = ((x & ~0x3333) >> 2) + (x & 0x3333); 161 x = ((x >> 4) + x) & 0x0f0f; 162 x = ((x >> 8) + x) & 0xff; 163 164 return x; 165 } 166 167 168 struct loaded_l10nfile * 170 _nl_make_l10nflist (struct loaded_l10nfile **l10nfile_list, 171 const char *dirlist, size_t dirlist_len, 172 int mask, const char *language, const char *territory, 173 const char *codeset, const char *normalized_codeset, 174 const char *modifier, const char *special, 175 const char *sponsor, const char *revision, 176 const char *filename, int do_allocate) 177 { 178 char *abs_filename; 179 struct loaded_l10nfile **lastp; 180 struct loaded_l10nfile *retval; 181 char *cp; 182 size_t dirlist_count; 183 size_t entries; 184 int cnt; 185 186 /* If LANGUAGE contains an absolute directory specification, we ignore 187 DIRLIST. */ 188 if (IS_ABSOLUTE_PATH (language)) 189 dirlist_len = 0; 190 191 /* Allocate room for the full file name. */ 192 abs_filename = (char *) malloc (dirlist_len 193 + strlen (language) 194 + ((mask & TERRITORY) != 0 195 ? strlen (territory) + 1 : 0) 196 + ((mask & XPG_CODESET) != 0 197 ? strlen (codeset) + 1 : 0) 198 + ((mask & XPG_NORM_CODESET) != 0 199 ? strlen (normalized_codeset) + 1 : 0) 200 + (((mask & XPG_MODIFIER) != 0 201 || (mask & CEN_AUDIENCE) != 0) 202 ? strlen (modifier) + 1 : 0) 203 + ((mask & CEN_SPECIAL) != 0 204 ? strlen (special) + 1 : 0) 205 + (((mask & CEN_SPONSOR) != 0 206 || (mask & CEN_REVISION) != 0) 207 ? (1 + ((mask & CEN_SPONSOR) != 0 208 ? strlen (sponsor) : 0) 209 + ((mask & CEN_REVISION) != 0 210 ? strlen (revision) + 1 : 0)) : 0) 211 + 1 + strlen (filename) + 1); 212 213 if (abs_filename == NULL) 214 return NULL; 215 216 /* Construct file name. */ 217 cp = abs_filename; 218 if (dirlist_len > 0) 219 { 220 memcpy (cp, dirlist, dirlist_len); 221 __argz_stringify (cp, dirlist_len, PATH_SEPARATOR); 222 cp += dirlist_len; 223 cp[-1] = '/'; 224 } 225 226 cp = stpcpy (cp, language); 227 228 if ((mask & TERRITORY) != 0) 229 { 230 *cp++ = '_'; 231 cp = stpcpy (cp, territory); 232 } 233 if ((mask & XPG_CODESET) != 0) 234 { 235 *cp++ = '.'; 236 cp = stpcpy (cp, codeset); 237 } 238 if ((mask & XPG_NORM_CODESET) != 0) 239 { 240 *cp++ = '.'; 241 cp = stpcpy (cp, normalized_codeset); 242 } 243 if ((mask & (XPG_MODIFIER | CEN_AUDIENCE)) != 0) 244 { 245 /* This component can be part of both syntaces but has different 246 leading characters. For CEN we use `+', else `@'. */ 247 *cp++ = (mask & CEN_AUDIENCE) != 0 ? '+' : '@'; 248 cp = stpcpy (cp, modifier); 249 } 250 if ((mask & CEN_SPECIAL) != 0) 251 { 252 *cp++ = '+'; 253 cp = stpcpy (cp, special); 254 } 255 if ((mask & (CEN_SPONSOR | CEN_REVISION)) != 0) 256 { 257 *cp++ = ','; 258 if ((mask & CEN_SPONSOR) != 0) 259 cp = stpcpy (cp, sponsor); 260 if ((mask & CEN_REVISION) != 0) 261 { 262 *cp++ = '_'; 263 cp = stpcpy (cp, revision); 264 } 265 } 266 267 *cp++ = '/'; 268 stpcpy (cp, filename); 269 270 /* Look in list of already loaded domains whether it is already 271 available. */ 272 lastp = l10nfile_list; 273 for (retval = *l10nfile_list; retval != NULL; retval = retval->next) 274 if (retval->filename != NULL) 275 { 276 int compare = strcmp (retval->filename, abs_filename); 277 if (compare == 0) 278 /* We found it! */ 279 break; 280 if (compare < 0) 281 { 282 /* It's not in the list. */ 283 retval = NULL; 284 break; 285 } 286 287 lastp = &retval->next; 288 } 289 290 if (retval != NULL || do_allocate == 0) 291 { 292 free (abs_filename); 293 return retval; 294 } 295 296 dirlist_count = (dirlist_len > 0 ? __argz_count (dirlist, dirlist_len) : 1); 297 298 /* Allocate a new loaded_l10nfile. */ 299 retval = 300 (struct loaded_l10nfile *) 301 malloc (sizeof (*retval) 302 + (((dirlist_count << pop (mask)) + (dirlist_count > 1 ? 1 : 0)) 303 * sizeof (struct loaded_l10nfile *))); 304 if (retval == NULL) 305 return NULL; 306 307 retval->filename = abs_filename; 308 309 /* We set retval->data to NULL here; it is filled in later. 310 Setting retval->decided to 1 here means that retval does not 311 correspond to a real file (dirlist_count > 1) or is not worth 312 looking up (if an unnormalized codeset was specified). */ 313 retval->decided = (dirlist_count > 1 314 || ((mask & XPG_CODESET) != 0 315 && (mask & XPG_NORM_CODESET) != 0)); 316 retval->data = NULL; 317 318 retval->next = *lastp; 319 *lastp = retval; 320 321 entries = 0; 322 /* Recurse to fill the inheritance list of RETVAL. 323 If the DIRLIST is a real list (i.e. DIRLIST_COUNT > 1), the RETVAL 324 entry does not correspond to a real file; retval->filename contains 325 colons. In this case we loop across all elements of DIRLIST and 326 across all bit patterns dominated by MASK. 327 If the DIRLIST is a single directory or entirely redundant (i.e. 328 DIRLIST_COUNT == 1), we loop across all bit patterns dominated by 329 MASK, excluding MASK itself. 330 In either case, we loop down from MASK to 0. This has the effect 331 that the extra bits in the locale name are dropped in this order: 332 first the modifier, then the territory, then the codeset, then the 333 normalized_codeset. */ 334 for (cnt = dirlist_count > 1 ? mask : mask - 1; cnt >= 0; --cnt) 335 if ((cnt & ~mask) == 0 336 && ((cnt & CEN_SPECIFIC) == 0 || (cnt & XPG_SPECIFIC) == 0) 337 && ((cnt & XPG_CODESET) == 0 || (cnt & XPG_NORM_CODESET) == 0)) 338 { 339 if (dirlist_count > 1) 340 { 341 /* Iterate over all elements of the DIRLIST. */ 342 char *dir = NULL; 343 344 while ((dir = __argz_next ((char *) dirlist, dirlist_len, dir)) 345 != NULL) 346 retval->successor[entries++] 347 = _nl_make_l10nflist (l10nfile_list, dir, strlen (dir) + 1, 348 cnt, language, territory, codeset, 349 normalized_codeset, modifier, special, 350 sponsor, revision, filename, 1); 351 } 352 else 353 retval->successor[entries++] 354 = _nl_make_l10nflist (l10nfile_list, dirlist, dirlist_len, 355 cnt, language, territory, codeset, 356 normalized_codeset, modifier, special, 357 sponsor, revision, filename, 1); 358 } 359 retval->successor[entries] = NULL; 360 361 return retval; 362 } 363 364 /* Normalize codeset name. There is no standard for the codeset 366 names. Normalization allows the user to use any of the common 367 names. The return value is dynamically allocated and has to be 368 freed by the caller. */ 369 const char * 370 _nl_normalize_codeset (const char *codeset, size_t name_len) 371 { 372 int len = 0; 373 int only_digit = 1; 374 char *retval; 375 char *wp; 376 size_t cnt; 377 378 for (cnt = 0; cnt < name_len; ++cnt) 379 if (isalnum ((unsigned char) codeset[cnt])) 380 { 381 ++len; 382 383 if (isalpha ((unsigned char) codeset[cnt])) 384 only_digit = 0; 385 } 386 387 retval = (char *) malloc ((only_digit ? 3 : 0) + len + 1); 388 389 if (retval != NULL) 390 { 391 if (only_digit) 392 wp = stpcpy (retval, "iso"); 393 else 394 wp = retval; 395 396 for (cnt = 0; cnt < name_len; ++cnt) 397 if (isalpha ((unsigned char) codeset[cnt])) 398 *wp++ = tolower ((unsigned char) codeset[cnt]); 399 else if (isdigit ((unsigned char) codeset[cnt])) 400 *wp++ = codeset[cnt]; 401 402 *wp = '\0'; 403 } 404 405 return (const char *) retval; 406 } 407 408 409 /* @@ begin of epilog @@ */ 410 411 /* We don't want libintl.a to depend on any other library. So we 412 avoid the non-standard function stpcpy. In GNU C Library this 413 function is available, though. Also allow the symbol HAVE_STPCPY 414 to be defined. */ 415 #if !_LIBC && !HAVE_STPCPY 416 static char * 417 stpcpy (char *dest, const char *src) 418 { 419 while ((*dest++ = *src++) != '\0') 420 /* Do nothing. */ ; 421 return dest - 1; 422 } 423 #endif 424
