1/* Copyright (C) 1995-1999, 2000, 2001 Free Software Foundation, Inc. 2 Contributed by Ulrich Drepper <drepper@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#if !HAVE_STRCHR && !defined _LIBC 32# ifndef strchr 33# define strchr index 34# endif 35#endif 36 37#if defined _LIBC || defined HAVE_ARGZ_H 38# include <argz.h> 39#endif 40#include <ctype.h> 41#include <sys/types.h> 42#include <stdlib.h> 43 44#include "loadinfo.h" 45 46/* On some strange systems still no definition of NULL is found. Sigh! */ 47#ifndef NULL 48# if defined __STDC__ && __STDC__ 49# define NULL ((void *) 0) 50# else 51# define NULL 0 52# endif 53#endif 54 55/* @@ end of prolog @@ */ 56 57#ifdef _LIBC 58/* Rename the non ANSI C functions. This is required by the standard 59 because some ANSI C functions will require linking with this object 60 file and the name space must not be polluted. */ 61# ifndef stpcpy 62# define stpcpy(dest, src) __stpcpy(dest, src) 63# endif 64#else 65# ifndef HAVE_STPCPY 66static char *stpcpy PARAMS ((char *dest, const char *src)); 67# endif 68#endif 69 70/* Define function which are usually not available. */ 71 72#if !defined _LIBC && !defined HAVE___ARGZ_COUNT 73/* Returns the number of strings in ARGZ. */ 74static size_t argz_count__ PARAMS ((const char *argz, size_t len)); 75 76static size_t 77argz_count__ (argz, len) 78 const char *argz; 79 size_t len; 80{ 81 size_t count = 0; 82 while (len > 0) 83 { 84 size_t part_len = strlen (argz); 85 argz += part_len + 1; 86 len -= part_len + 1; 87 count++; 88 } 89 return count; 90} 91# undef __argz_count 92# define __argz_count(argz, len) argz_count__ (argz, len) 93#endif /* !_LIBC && !HAVE___ARGZ_COUNT */ 94 95#if !defined _LIBC && !defined HAVE___ARGZ_STRINGIFY 96/* Make '\0' separated arg vector ARGZ printable by converting all the '\0's 97 except the last into the character SEP. */ 98static void argz_stringify__ PARAMS ((char *argz, size_t len, int sep)); 99 100static void 101argz_stringify__ (argz, len, sep) 102 char *argz; 103 size_t len; 104 int sep; 105{ 106 while (len > 0) 107 { 108 size_t part_len = strlen (argz); 109 argz += part_len; 110 len -= part_len + 1; 111 if (len > 0) 112 *argz++ = sep; 113 } 114} 115# undef __argz_stringify 116# define __argz_stringify(argz, len, sep) argz_stringify__ (argz, len, sep) 117#endif /* !_LIBC && !HAVE___ARGZ_STRINGIFY */ 118 119#if !defined _LIBC && !defined HAVE___ARGZ_NEXT 120static char *argz_next__ PARAMS ((char *argz, size_t argz_len, 121 const char *entry)); 122 123static char * 124argz_next__ (argz, argz_len, entry) 125 char *argz; 126 size_t argz_len; 127 const char *entry; 128{ 129 if (entry) 130 { 131 if (entry < argz + argz_len) 132 entry = strchr (entry, '\0') + 1; 133 134 return entry >= argz + argz_len ? NULL : (char *) entry; 135 } 136 else 137 if (argz_len > 0) 138 return argz; 139 else 140 return 0; 141} 142# undef __argz_next 143# define __argz_next(argz, len, entry) argz_next__ (argz, len, entry) 144#endif /* !_LIBC && !HAVE___ARGZ_NEXT */ 145 146 147/* Return number of bits set in X. */ 148static int pop PARAMS ((int x)); 149 150static inline int 151pop (x) 152 int x; 153{ 154 /* We assume that no more than 16 bits are used. */ 155 x = ((x & ~0x5555) >> 1) + (x & 0x5555); 156 x = ((x & ~0x3333) >> 2) + (x & 0x3333); 157 x = ((x >> 4) + x) & 0x0f0f; 158 x = ((x >> 8) + x) & 0xff; 159 160 return x; 161} 162 163 164struct loaded_l10nfile * 165_nl_make_l10nflist (l10nfile_list, dirlist, dirlist_len, mask, language, 166 territory, codeset, normalized_codeset, modifier, special, 167 sponsor, revision, filename, do_allocate) 168 struct loaded_l10nfile **l10nfile_list; 169 const char *dirlist; 170 size_t dirlist_len; 171 int mask; 172 const char *language; 173 const char *territory; 174 const char *codeset; 175 const char *normalized_codeset; 176 const char *modifier; 177 const char *special; 178 const char *sponsor; 179 const char *revision; 180 const char *filename; 181 int do_allocate; 182{ 183 char *abs_filename; 184 struct loaded_l10nfile *last = NULL; 185 struct loaded_l10nfile *retval; 186 char *cp; 187 size_t entries; 188 int cnt; 189 190 /* Allocate room for the full file name. */ 191 abs_filename = (char *) malloc (dirlist_len 192 + strlen (language) 193 + ((mask & TERRITORY) != 0 194 ? strlen (territory) + 1 : 0) 195 + ((mask & XPG_CODESET) != 0 196 ? strlen (codeset) + 1 : 0) 197 + ((mask & XPG_NORM_CODESET) != 0 198 ? strlen (normalized_codeset) + 1 : 0) 199 + (((mask & XPG_MODIFIER) != 0 200 || (mask & CEN_AUDIENCE) != 0) 201 ? strlen (modifier) + 1 : 0) 202 + ((mask & CEN_SPECIAL) != 0 203 ? strlen (special) + 1 : 0) 204 + (((mask & CEN_SPONSOR) != 0 205 || (mask & CEN_REVISION) != 0) 206 ? (1 + ((mask & CEN_SPONSOR) != 0 207 ? strlen (sponsor) + 1 : 0) 208 + ((mask & CEN_REVISION) != 0 209 ? strlen (revision) + 1 : 0)) : 0) 210 + 1 + strlen (filename) + 1); 211 212 if (abs_filename == NULL) 213 return NULL; 214 215 retval = NULL; 216 last = NULL; 217 218 /* Construct file name. */ 219 memcpy (abs_filename, dirlist, dirlist_len); 220 __argz_stringify (abs_filename, dirlist_len, PATH_SEPARATOR); 221 cp = abs_filename + (dirlist_len - 1); 222 *cp++ = '/'; 223 cp = stpcpy (cp, language); 224 225 if ((mask & TERRITORY) != 0) 226 { 227 *cp++ = '_'; 228 cp = stpcpy (cp, territory); 229 } 230 if ((mask & XPG_CODESET) != 0) 231 { 232 *cp++ = '.'; 233 cp = stpcpy (cp, codeset); 234 } 235 if ((mask & XPG_NORM_CODESET) != 0) 236 { 237 *cp++ = '.'; 238 cp = stpcpy (cp, normalized_codeset); 239 } 240 if ((mask & (XPG_MODIFIER | CEN_AUDIENCE)) != 0) 241 { 242 /* This component can be part of both syntaces but has different 243 leading characters. For CEN we use `+', else `@'. */ 244 *cp++ = (mask & CEN_AUDIENCE) != 0 ? '+' : '@'; 245 cp = stpcpy (cp, modifier); 246 } 247 if ((mask & CEN_SPECIAL) != 0) 248 { 249 *cp++ = '+'; 250 cp = stpcpy (cp, special); 251 } 252 if ((mask & (CEN_SPONSOR | CEN_REVISION)) != 0) 253 { 254 *cp++ = ','; 255 if ((mask & CEN_SPONSOR) != 0) 256 cp = stpcpy (cp, sponsor); 257 if ((mask & CEN_REVISION) != 0) 258 { 259 *cp++ = '_'; 260 cp = stpcpy (cp, revision); 261 } 262 } 263 264 *cp++ = '/'; 265 stpcpy (cp, filename); 266 267 /* Look in list of already loaded domains whether it is already 268 available. */ 269 last = NULL; 270 for (retval = *l10nfile_list; retval != NULL; retval = retval->next) 271 if (retval->filename != NULL) 272 { 273 int compare = strcmp (retval->filename, abs_filename); 274 if (compare == 0) 275 /* We found it! */ 276 break; 277 if (compare < 0) 278 { 279 /* It's not in the list. */ 280 retval = NULL; 281 break; 282 } 283 284 last = retval; 285 } 286 287 if (retval != NULL || do_allocate == 0) 288 { 289 free (abs_filename); 290 return retval; 291 } 292 293 retval = (struct loaded_l10nfile *) 294 malloc (sizeof (*retval) + (__argz_count (dirlist, dirlist_len) 295 * (1 << pop (mask)) 296 * sizeof (struct loaded_l10nfile *))); 297 if (retval == NULL) 298 return NULL; 299 300 retval->filename = abs_filename; 301 retval->decided = (__argz_count (dirlist, dirlist_len) != 1 302 || ((mask & XPG_CODESET) != 0 303 && (mask & XPG_NORM_CODESET) != 0)); 304 retval->data = NULL; 305 306 if (last == NULL) 307 { 308 retval->next = *l10nfile_list; 309 *l10nfile_list = retval; 310 } 311 else 312 { 313 retval->next = last->next; 314 last->next = retval; 315 } 316 317 entries = 0; 318 /* If the DIRLIST is a real list the RETVAL entry corresponds not to 319 a real file. So we have to use the DIRLIST separation mechanism 320 of the inner loop. */ 321 cnt = __argz_count (dirlist, dirlist_len) == 1 ? mask - 1 : mask; 322 for (; cnt >= 0; --cnt) 323 if ((cnt & ~mask) == 0 324 && ((cnt & CEN_SPECIFIC) == 0 || (cnt & XPG_SPECIFIC) == 0) 325 && ((cnt & XPG_CODESET) == 0 || (cnt & XPG_NORM_CODESET) == 0)) 326 { 327 /* Iterate over all elements of the DIRLIST. */ 328 char *dir = NULL; 329 330 while ((dir = __argz_next ((char *) dirlist, dirlist_len, dir)) 331 != NULL) 332 retval->successor[entries++] 333 = _nl_make_l10nflist (l10nfile_list, dir, strlen (dir) + 1, cnt, 334 language, territory, codeset, 335 normalized_codeset, modifier, special, 336 sponsor, revision, filename, 1); 337 } 338 retval->successor[entries] = NULL; 339 340 return retval; 341} 342 343/* Normalize codeset name. There is no standard for the codeset 344 names. Normalization allows the user to use any of the common 345 names. The return value is dynamically allocated and has to be 346 freed by the caller. */ 347const char * 348_nl_normalize_codeset (codeset, name_len) 349 const char *codeset; 350 size_t name_len; 351{ 352 int len = 0; 353 int only_digit = 1; 354 char *retval; 355 char *wp; 356 size_t cnt; 357 358 for (cnt = 0; cnt < name_len; ++cnt) 359 if (isalnum ((unsigned char)codeset[cnt])) 360 { 361 ++len; 362 363 if (isalpha ((unsigned char)codeset[cnt])) 364 only_digit = 0; 365 } 366 367 retval = (char *) malloc ((only_digit ? 3 : 0) + len + 1); 368 369 if (retval != NULL) 370 { 371 if (only_digit) 372 wp = stpcpy (retval, "iso"); 373 else 374 wp = retval; 375 376 for (cnt = 0; cnt < name_len; ++cnt) 377 if (isalpha ((unsigned char)codeset[cnt])) 378 *wp++ = tolower ((unsigned char)codeset[cnt]); 379 else if (isdigit ((unsigned char)codeset[cnt])) 380 *wp++ = codeset[cnt]; 381 382 *wp = '\0'; 383 } 384 385 return (const char *) retval; 386} 387 388 389/* @@ begin of epilog @@ */ 390 391/* We don't want libintl.a to depend on any other library. So we 392 avoid the non-standard function stpcpy. In GNU C Library this 393 function is available, though. Also allow the symbol HAVE_STPCPY 394 to be defined. */ 395#if !_LIBC && !HAVE_STPCPY 396static char * 397stpcpy (dest, src) 398 char *dest; 399 const char *src; 400{ 401 while ((*dest++ = *src++) != '\0') 402 /* Do nothing. */ ; 403 return dest - 1; 404} 405#endif 406