1/* l10nflist.c - make localization file list. */ 2 3/* Copyright (C) 1995-1999, 2000, 2001, 2002, 2005-2009 Free Software Foundation, Inc. 4 Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995. 5 6 This file is part of GNU Bash. 7 8 Bash is free software: you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation, either version 3 of the License, or 11 (at your option) any later version. 12 13 Bash is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with Bash. If not, see <http://www.gnu.org/licenses/>. 20*/ 21 22/* Tell glibc's <string.h> to provide a prototype for stpcpy(). 23 This must come before <config.h> because <config.h> may include 24 <features.h>, and once <features.h> has been included, it's too late. */ 25#ifndef _GNU_SOURCE 26# define _GNU_SOURCE 1 27#endif 28 29#ifdef HAVE_CONFIG_H 30# include <config.h> 31#endif 32 33#include <string.h> 34 35#if defined _LIBC || defined HAVE_ARGZ_H 36# include <argz.h> 37#endif 38#include <ctype.h> 39#include <sys/types.h> 40#include <stdlib.h> 41 42#include "loadinfo.h" 43 44/* On some strange systems still no definition of NULL is found. Sigh! */ 45#ifndef NULL 46# if defined __STDC__ && __STDC__ 47# define NULL ((void *) 0) 48# else 49# define NULL 0 50# endif 51#endif 52 53/* @@ end of prolog @@ */ 54 55#ifdef _LIBC 56/* Rename the non ANSI C functions. This is required by the standard 57 because some ANSI C functions will require linking with this object 58 file and the name space must not be polluted. */ 59# ifndef stpcpy 60# define stpcpy(dest, src) __stpcpy(dest, src) 61# endif 62#else 63# ifndef HAVE_STPCPY 64static char *stpcpy PARAMS ((char *dest, const char *src)); 65# endif 66#endif 67 68/* Pathname support. 69 ISSLASH(C) tests whether C is a directory separator character. 70 IS_ABSOLUTE_PATH(P) tests whether P is an absolute path. If it is not, 71 it may be concatenated to a directory pathname. 72 */ 73#if defined _WIN32 || defined __WIN32__ || defined __EMX__ || defined __DJGPP__ 74 /* Win32, OS/2, DOS */ 75# define ISSLASH(C) ((C) == '/' || (C) == '\\') 76# define HAS_DEVICE(P) \ 77 ((((P)[0] >= 'A' && (P)[0] <= 'Z') || ((P)[0] >= 'a' && (P)[0] <= 'z')) \ 78 && (P)[1] == ':') 79# define IS_ABSOLUTE_PATH(P) (ISSLASH ((P)[0]) || HAS_DEVICE (P)) 80#else 81 /* Unix */ 82# define ISSLASH(C) ((C) == '/') 83# define IS_ABSOLUTE_PATH(P) ISSLASH ((P)[0]) 84#endif 85 86/* Define function which are usually not available. */ 87 88#if !defined _LIBC && !defined HAVE___ARGZ_COUNT 89/* Returns the number of strings in ARGZ. */ 90static size_t argz_count__ PARAMS ((const char *argz, size_t len)); 91 92static size_t 93argz_count__ (argz, len) 94 const char *argz; 95 size_t len; 96{ 97 size_t count = 0; 98 while (len > 0) 99 { 100 size_t part_len = strlen (argz); 101 argz += part_len + 1; 102 len -= part_len + 1; 103 count++; 104 } 105 return count; 106} 107# undef __argz_count 108# define __argz_count(argz, len) argz_count__ (argz, len) 109#else 110# ifdef _LIBC 111# define __argz_count(argz, len) INTUSE(__argz_count) (argz, len) 112# endif 113#endif /* !_LIBC && !HAVE___ARGZ_COUNT */ 114 115#if !defined _LIBC && !defined HAVE___ARGZ_STRINGIFY 116/* Make '\0' separated arg vector ARGZ printable by converting all the '\0's 117 except the last into the character SEP. */ 118static void argz_stringify__ PARAMS ((char *argz, size_t len, int sep)); 119 120static void 121argz_stringify__ (argz, len, sep) 122 char *argz; 123 size_t len; 124 int sep; 125{ 126 while (len > 0) 127 { 128 size_t part_len = strlen (argz); 129 argz += part_len; 130 len -= part_len + 1; 131 if (len > 0) 132 *argz++ = sep; 133 } 134} 135# undef __argz_stringify 136# define __argz_stringify(argz, len, sep) argz_stringify__ (argz, len, sep) 137#else 138# ifdef _LIBC 139# define __argz_stringify(argz, len, sep) \ 140 INTUSE(__argz_stringify) (argz, len, sep) 141# endif 142#endif /* !_LIBC && !HAVE___ARGZ_STRINGIFY */ 143 144#if !defined _LIBC && !defined HAVE___ARGZ_NEXT 145static char *argz_next__ PARAMS ((char *argz, size_t argz_len, 146 const char *entry)); 147 148static char * 149argz_next__ (argz, argz_len, entry) 150 char *argz; 151 size_t argz_len; 152 const char *entry; 153{ 154 if (entry) 155 { 156 if (entry < argz + argz_len) 157 entry = strchr (entry, '\0') + 1; 158 159 return entry >= argz + argz_len ? NULL : (char *) entry; 160 } 161 else 162 if (argz_len > 0) 163 return argz; 164 else 165 return 0; 166} 167# undef __argz_next 168# define __argz_next(argz, len, entry) argz_next__ (argz, len, entry) 169#endif /* !_LIBC && !HAVE___ARGZ_NEXT */ 170 171 172/* Return number of bits set in X. */ 173static int pop PARAMS ((int x)); 174 175static inline int 176pop (x) 177 int x; 178{ 179 /* We assume that no more than 16 bits are used. */ 180 x = ((x & ~0x5555) >> 1) + (x & 0x5555); 181 x = ((x & ~0x3333) >> 2) + (x & 0x3333); 182 x = ((x >> 4) + x) & 0x0f0f; 183 x = ((x >> 8) + x) & 0xff; 184 185 return x; 186} 187 188 189struct loaded_l10nfile * 190_nl_make_l10nflist (l10nfile_list, dirlist, dirlist_len, mask, language, 191 territory, codeset, normalized_codeset, modifier, special, 192 sponsor, revision, filename, do_allocate) 193 struct loaded_l10nfile **l10nfile_list; 194 const char *dirlist; 195 size_t dirlist_len; 196 int mask; 197 const char *language; 198 const char *territory; 199 const char *codeset; 200 const char *normalized_codeset; 201 const char *modifier; 202 const char *special; 203 const char *sponsor; 204 const char *revision; 205 const char *filename; 206 int do_allocate; 207{ 208 char *abs_filename; 209 struct loaded_l10nfile **lastp; 210 struct loaded_l10nfile *retval; 211 char *cp; 212 size_t dirlist_count; 213 size_t entries; 214 int cnt; 215 216 /* If LANGUAGE contains an absolute directory specification, we ignore 217 DIRLIST. */ 218 if (IS_ABSOLUTE_PATH (language)) 219 dirlist_len = 0; 220 221 /* Allocate room for the full file name. */ 222 abs_filename = (char *) malloc (dirlist_len 223 + strlen (language) 224 + ((mask & TERRITORY) != 0 225 ? strlen (territory) + 1 : 0) 226 + ((mask & XPG_CODESET) != 0 227 ? strlen (codeset) + 1 : 0) 228 + ((mask & XPG_NORM_CODESET) != 0 229 ? strlen (normalized_codeset) + 1 : 0) 230 + (((mask & XPG_MODIFIER) != 0 231 || (mask & CEN_AUDIENCE) != 0) 232 ? strlen (modifier) + 1 : 0) 233 + ((mask & CEN_SPECIAL) != 0 234 ? strlen (special) + 1 : 0) 235 + (((mask & CEN_SPONSOR) != 0 236 || (mask & CEN_REVISION) != 0) 237 ? (1 + ((mask & CEN_SPONSOR) != 0 238 ? strlen (sponsor) : 0) 239 + ((mask & CEN_REVISION) != 0 240 ? strlen (revision) + 1 : 0)) : 0) 241 + 1 + strlen (filename) + 1); 242 243 if (abs_filename == NULL) 244 return NULL; 245 246 /* Construct file name. */ 247 cp = abs_filename; 248 if (dirlist_len > 0) 249 { 250 memcpy (cp, dirlist, dirlist_len); 251 __argz_stringify (cp, dirlist_len, PATH_SEPARATOR); 252 cp += dirlist_len; 253 cp[-1] = '/'; 254 } 255 256 cp = stpcpy (cp, language); 257 258 if ((mask & TERRITORY) != 0) 259 { 260 *cp++ = '_'; 261 cp = stpcpy (cp, territory); 262 } 263 if ((mask & XPG_CODESET) != 0) 264 { 265 *cp++ = '.'; 266 cp = stpcpy (cp, codeset); 267 } 268 if ((mask & XPG_NORM_CODESET) != 0) 269 { 270 *cp++ = '.'; 271 cp = stpcpy (cp, normalized_codeset); 272 } 273 if ((mask & (XPG_MODIFIER | CEN_AUDIENCE)) != 0) 274 { 275 /* This component can be part of both syntaces but has different 276 leading characters. For CEN we use `+', else `@'. */ 277 *cp++ = (mask & CEN_AUDIENCE) != 0 ? '+' : '@'; 278 cp = stpcpy (cp, modifier); 279 } 280 if ((mask & CEN_SPECIAL) != 0) 281 { 282 *cp++ = '+'; 283 cp = stpcpy (cp, special); 284 } 285 if ((mask & (CEN_SPONSOR | CEN_REVISION)) != 0) 286 { 287 *cp++ = ','; 288 if ((mask & CEN_SPONSOR) != 0) 289 cp = stpcpy (cp, sponsor); 290 if ((mask & CEN_REVISION) != 0) 291 { 292 *cp++ = '_'; 293 cp = stpcpy (cp, revision); 294 } 295 } 296 297 *cp++ = '/'; 298 stpcpy (cp, filename); 299 300 /* Look in list of already loaded domains whether it is already 301 available. */ 302 lastp = l10nfile_list; 303 for (retval = *l10nfile_list; retval != NULL; retval = retval->next) 304 if (retval->filename != NULL) 305 { 306 int compare = strcmp (retval->filename, abs_filename); 307 if (compare == 0) 308 /* We found it! */ 309 break; 310 if (compare < 0) 311 { 312 /* It's not in the list. */ 313 retval = NULL; 314 break; 315 } 316 317 lastp = &retval->next; 318 } 319 320 if (retval != NULL || do_allocate == 0) 321 { 322 free (abs_filename); 323 return retval; 324 } 325 326 dirlist_count = (dirlist_len > 0 ? __argz_count (dirlist, dirlist_len) : 1); 327 328 /* Allocate a new loaded_l10nfile. */ 329 retval = 330 (struct loaded_l10nfile *) 331 malloc (sizeof (*retval) 332 + (((dirlist_count << pop (mask)) + (dirlist_count > 1 ? 1 : 0)) 333 * sizeof (struct loaded_l10nfile *))); 334 if (retval == NULL) 335 return NULL; 336 337 retval->filename = abs_filename; 338 339 /* We set retval->data to NULL here; it is filled in later. 340 Setting retval->decided to 1 here means that retval does not 341 correspond to a real file (dirlist_count > 1) or is not worth 342 looking up (if an unnormalized codeset was specified). */ 343 retval->decided = (dirlist_count > 1 344 || ((mask & XPG_CODESET) != 0 345 && (mask & XPG_NORM_CODESET) != 0)); 346 retval->data = NULL; 347 348 retval->next = *lastp; 349 *lastp = retval; 350 351 entries = 0; 352 /* Recurse to fill the inheritance list of RETVAL. 353 If the DIRLIST is a real list (i.e. DIRLIST_COUNT > 1), the RETVAL 354 entry does not correspond to a real file; retval->filename contains 355 colons. In this case we loop across all elements of DIRLIST and 356 across all bit patterns dominated by MASK. 357 If the DIRLIST is a single directory or entirely redundant (i.e. 358 DIRLIST_COUNT == 1), we loop across all bit patterns dominated by 359 MASK, excluding MASK itself. 360 In either case, we loop down from MASK to 0. This has the effect 361 that the extra bits in the locale name are dropped in this order: 362 first the modifier, then the territory, then the codeset, then the 363 normalized_codeset. */ 364 for (cnt = dirlist_count > 1 ? mask : mask - 1; cnt >= 0; --cnt) 365 if ((cnt & ~mask) == 0 366 && ((cnt & CEN_SPECIFIC) == 0 || (cnt & XPG_SPECIFIC) == 0) 367 && ((cnt & XPG_CODESET) == 0 || (cnt & XPG_NORM_CODESET) == 0)) 368 { 369 if (dirlist_count > 1) 370 { 371 /* Iterate over all elements of the DIRLIST. */ 372 char *dir = NULL; 373 374 while ((dir = __argz_next ((char *) dirlist, dirlist_len, dir)) 375 != NULL) 376 retval->successor[entries++] 377 = _nl_make_l10nflist (l10nfile_list, dir, strlen (dir) + 1, 378 cnt, language, territory, codeset, 379 normalized_codeset, modifier, special, 380 sponsor, revision, filename, 1); 381 } 382 else 383 retval->successor[entries++] 384 = _nl_make_l10nflist (l10nfile_list, dirlist, dirlist_len, 385 cnt, language, territory, codeset, 386 normalized_codeset, modifier, special, 387 sponsor, revision, filename, 1); 388 } 389 retval->successor[entries] = NULL; 390 391 return retval; 392} 393 394/* Normalize codeset name. There is no standard for the codeset 395 names. Normalization allows the user to use any of the common 396 names. The return value is dynamically allocated and has to be 397 freed by the caller. */ 398const char * 399_nl_normalize_codeset (codeset, name_len) 400 const char *codeset; 401 size_t name_len; 402{ 403 int len = 0; 404 int only_digit = 1; 405 char *retval; 406 char *wp; 407 size_t cnt; 408 409 for (cnt = 0; cnt < name_len; ++cnt) 410 if (isalnum ((unsigned char) codeset[cnt])) 411 { 412 ++len; 413 414 if (isalpha ((unsigned char) codeset[cnt])) 415 only_digit = 0; 416 } 417 418 retval = (char *) malloc ((only_digit ? 3 : 0) + len + 1); 419 420 if (retval != NULL) 421 { 422 if (only_digit) 423 wp = stpcpy (retval, "iso"); 424 else 425 wp = retval; 426 427 for (cnt = 0; cnt < name_len; ++cnt) 428 if (isalpha ((unsigned char) codeset[cnt])) 429 *wp++ = tolower ((unsigned char) codeset[cnt]); 430 else if (isdigit ((unsigned char) codeset[cnt])) 431 *wp++ = codeset[cnt]; 432 433 *wp = '\0'; 434 } 435 436 return (const char *) retval; 437} 438 439 440/* @@ begin of epilog @@ */ 441 442/* We don't want libintl.a to depend on any other library. So we 443 avoid the non-standard function stpcpy. In GNU C Library this 444 function is available, though. Also allow the symbol HAVE_STPCPY 445 to be defined. */ 446#if !_LIBC && !HAVE_STPCPY 447static char * 448stpcpy (dest, src) 449 char *dest; 450 const char *src; 451{ 452 while ((*dest++ = *src++) != '\0') 453 /* Do nothing. */ ; 454 return dest - 1; 455} 456#endif 457