1 /* Copyright (C) 1995-1999, 2000, 2001, 2002 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301,
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 PARAMS ((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 argz_count__ PARAMS ((const char *argz, size_t len));
88
89 static size_t
90 argz_count__ (argz, len)
91 const char *argz;
92 size_t len;
93 {
94 size_t count = 0;
95 while (len > 0)
96 {
97 size_t part_len = strlen (argz);
98 argz += part_len + 1;
99 len -= part_len + 1;
100 count++;
101 }
102 return count;
103 }
104 # undef __argz_count
105 # define __argz_count(argz, len) argz_count__ (argz, len)
106 #else
107 # ifdef _LIBC
108 # define __argz_count(argz, len) INTUSE(__argz_count) (argz, len)
109 # endif
110 #endif /* !_LIBC && !HAVE___ARGZ_COUNT */
111
112 #if !defined _LIBC && !defined HAVE___ARGZ_STRINGIFY
113 /* Make '\0' separated arg vector ARGZ printable by converting all the '\0's
114 except the last into the character SEP. */
115 static void argz_stringify__ PARAMS ((char *argz, size_t len, int sep));
116
117 static void
118 argz_stringify__ (argz, len, sep)
119 char *argz;
120 size_t len;
121 int sep;
122 {
123 while (len > 0)
124 {
125 size_t part_len = strlen (argz);
126 argz += part_len;
127 len -= part_len + 1;
128 if (len > 0)
129 *argz++ = sep;
130 }
131 }
132 # undef __argz_stringify
133 # define __argz_stringify(argz, len, sep) argz_stringify__ (argz, len, sep)
134 #else
135 # ifdef _LIBC
136 # define __argz_stringify(argz, len, sep) \
137 INTUSE(__argz_stringify) (argz, len, sep)
138 # endif
139 #endif /* !_LIBC && !HAVE___ARGZ_STRINGIFY */
140
141 #if !defined _LIBC && !defined HAVE___ARGZ_NEXT
142 static char *argz_next__ PARAMS ((char *argz, size_t argz_len,
143 const char *entry));
144
145 static char *
146 argz_next__ (argz, argz_len, entry)
147 char *argz;
148 size_t argz_len;
149 const char *entry;
150 {
151 if (entry)
152 {
153 if (entry < argz + argz_len)
154 entry = strchr (entry, '\0') + 1;
155
156 return entry >= argz + argz_len ? NULL : (char *) entry;
157 }
158 else
159 if (argz_len > 0)
160 return argz;
161 else
162 return 0;
163 }
164 # undef __argz_next
165 # define __argz_next(argz, len, entry) argz_next__ (argz, len, entry)
166 #endif /* !_LIBC && !HAVE___ARGZ_NEXT */
167
168
169 /* Return number of bits set in X. */
170 static int pop PARAMS ((int x));
171
172 static inline int
173 pop (x)
174 int x;
175 {
176 /* We assume that no more than 16 bits are used. */
177 x = ((x & ~0x5555) >> 1) + (x & 0x5555);
178 x = ((x & ~0x3333) >> 2) + (x & 0x3333);
179 x = ((x >> 4) + x) & 0x0f0f;
180 x = ((x >> 8) + x) & 0xff;
181
182 return x;
183 }
184
185
186 struct loaded_l10nfile *
187 _nl_make_l10nflist (l10nfile_list, dirlist, dirlist_len, mask, language,
188 territory, codeset, normalized_codeset, modifier, special,
189 sponsor, revision, filename, do_allocate)
190 struct loaded_l10nfile **l10nfile_list;
191 const char *dirlist;
192 size_t dirlist_len;
193 int mask;
194 const char *language;
195 const char *territory;
196 const char *codeset;
197 const char *normalized_codeset;
198 const char *modifier;
199 const char *special;
200 const char *sponsor;
201 const char *revision;
202 const char *filename;
203 int do_allocate;
204 {
205 char *abs_filename;
206 struct loaded_l10nfile **lastp;
207 struct loaded_l10nfile *retval;
208 char *cp;
209 size_t dirlist_count;
210 size_t entries;
211 int cnt;
212
213 /* If LANGUAGE contains an absolute directory specification, we ignore
214 DIRLIST. */
215 if (IS_ABSOLUTE_PATH (language))
216 dirlist_len = 0;
217
218 /* Allocate room for the full file name. */
219 abs_filename = (char *) malloc (dirlist_len
220 + strlen (language)
221 + ((mask & TERRITORY) != 0
222 ? strlen (territory) + 1 : 0)
223 + ((mask & XPG_CODESET) != 0
224 ? strlen (codeset) + 1 : 0)
225 + ((mask & XPG_NORM_CODESET) != 0
226 ? strlen (normalized_codeset) + 1 : 0)
227 + (((mask & XPG_MODIFIER) != 0
228 || (mask & CEN_AUDIENCE) != 0)
229 ? strlen (modifier) + 1 : 0)
230 + ((mask & CEN_SPECIAL) != 0
231 ? strlen (special) + 1 : 0)
232 + (((mask & CEN_SPONSOR) != 0
233 || (mask & CEN_REVISION) != 0)
234 ? (1 + ((mask & CEN_SPONSOR) != 0
235 ? strlen (sponsor) : 0)
236 + ((mask & CEN_REVISION) != 0
237 ? strlen (revision) + 1 : 0)) : 0)
238 + 1 + strlen (filename) + 1);
239
240 if (abs_filename == NULL)
241 return NULL;
242
243 /* Construct file name. */
244 cp = abs_filename;
245 if (dirlist_len > 0)
246 {
247 memcpy (cp, dirlist, dirlist_len);
248 __argz_stringify (cp, dirlist_len, PATH_SEPARATOR);
249 cp += dirlist_len;
250 cp[-1] = '/';
251 }
252
253 cp = stpcpy (cp, language);
254
255 if ((mask & TERRITORY) != 0)
256 {
257 *cp++ = '_';
258 cp = stpcpy (cp, territory);
259 }
260 if ((mask & XPG_CODESET) != 0)
261 {
262 *cp++ = '.';
263 cp = stpcpy (cp, codeset);
264 }
265 if ((mask & XPG_NORM_CODESET) != 0)
266 {
267 *cp++ = '.';
268 cp = stpcpy (cp, normalized_codeset);
269 }
270 if ((mask & (XPG_MODIFIER | CEN_AUDIENCE)) != 0)
271 {
272 /* This component can be part of both syntaces but has different
273 leading characters. For CEN we use `+', else `@'. */
274 *cp++ = (mask & CEN_AUDIENCE) != 0 ? '+' : '@';
275 cp = stpcpy (cp, modifier);
276 }
277 if ((mask & CEN_SPECIAL) != 0)
278 {
279 *cp++ = '+';
280 cp = stpcpy (cp, special);
281 }
282 if ((mask & (CEN_SPONSOR | CEN_REVISION)) != 0)
283 {
284 *cp++ = ',';
285 if ((mask & CEN_SPONSOR) != 0)
286 cp = stpcpy (cp, sponsor);
287 if ((mask & CEN_REVISION) != 0)
288 {
289 *cp++ = '_';
290 cp = stpcpy (cp, revision);
291 }
292 }
293
294 *cp++ = '/';
295 stpcpy (cp, filename);
296
297 /* Look in list of already loaded domains whether it is already
298 available. */
299 lastp = l10nfile_list;
300 for (retval = *l10nfile_list; retval != NULL; retval = retval->next)
301 if (retval->filename != NULL)
302 {
303 int compare = strcmp (retval->filename, abs_filename);
304 if (compare == 0)
305 /* We found it! */
306 break;
307 if (compare < 0)
308 {
309 /* It's not in the list. */
310 retval = NULL;
311 break;
312 }
313
314 lastp = &retval->next;
315 }
316
317 if (retval != NULL || do_allocate == 0)
318 {
319 free (abs_filename);
320 return retval;
321 }
322
323 dirlist_count = (dirlist_len > 0 ? __argz_count (dirlist, dirlist_len) : 1);
324
325 /* Allocate a new loaded_l10nfile. */
326 retval =
327 (struct loaded_l10nfile *)
328 malloc (sizeof (*retval)
329 + (((dirlist_count << pop (mask)) + (dirlist_count > 1 ? 1 : 0))
330 * sizeof (struct loaded_l10nfile *)));
331 if (retval == NULL)
332 return NULL;
333
334 retval->filename = abs_filename;
335
336 /* We set retval->data to NULL here; it is filled in later.
337 Setting retval->decided to 1 here means that retval does not
338 correspond to a real file (dirlist_count > 1) or is not worth
339 looking up (if an unnormalized codeset was specified). */
340 retval->decided = (dirlist_count > 1
341 || ((mask & XPG_CODESET) != 0
342 && (mask & XPG_NORM_CODESET) != 0));
343 retval->data = NULL;
344
345 retval->next = *lastp;
346 *lastp = retval;
347
348 entries = 0;
349 /* Recurse to fill the inheritance list of RETVAL.
350 If the DIRLIST is a real list (i.e. DIRLIST_COUNT > 1), the RETVAL
351 entry does not correspond to a real file; retval->filename contains
352 colons. In this case we loop across all elements of DIRLIST and
353 across all bit patterns dominated by MASK.
354 If the DIRLIST is a single directory or entirely redundant (i.e.
355 DIRLIST_COUNT == 1), we loop across all bit patterns dominated by
356 MASK, excluding MASK itself.
357 In either case, we loop down from MASK to 0. This has the effect
358 that the extra bits in the locale name are dropped in this order:
359 first the modifier, then the territory, then the codeset, then the
360 normalized_codeset. */
361 for (cnt = dirlist_count > 1 ? mask : mask - 1; cnt >= 0; --cnt)
362 if ((cnt & ~mask) == 0
363 && ((cnt & CEN_SPECIFIC) == 0 || (cnt & XPG_SPECIFIC) == 0)
364 && ((cnt & XPG_CODESET) == 0 || (cnt & XPG_NORM_CODESET) == 0))
365 {
366 if (dirlist_count > 1)
367 {
368 /* Iterate over all elements of the DIRLIST. */
369 char *dir = NULL;
370
371 while ((dir = __argz_next ((char *) dirlist, dirlist_len, dir))
372 != NULL)
373 retval->successor[entries++]
374 = _nl_make_l10nflist (l10nfile_list, dir, strlen (dir) + 1,
375 cnt, language, territory, codeset,
376 normalized_codeset, modifier, special,
377 sponsor, revision, filename, 1);
378 }
379 else
380 retval->successor[entries++]
381 = _nl_make_l10nflist (l10nfile_list, dirlist, dirlist_len,
382 cnt, language, territory, codeset,
383 normalized_codeset, modifier, special,
384 sponsor, revision, filename, 1);
385 }
386 retval->successor[entries] = NULL;
387
388 return retval;
389 }
390
391 /* Normalize codeset name. There is no standard for the codeset
392 names. Normalization allows the user to use any of the common
393 names. The return value is dynamically allocated and has to be
394 freed by the caller. */
395 const char *
396 _nl_normalize_codeset (codeset, name_len)
397 const char *codeset;
398 size_t name_len;
399 {
400 int len = 0;
401 int only_digit = 1;
402 char *retval;
403 char *wp;
404 size_t cnt;
405
406 for (cnt = 0; cnt < name_len; ++cnt)
407 if (isalnum ((unsigned char) codeset[cnt]))
408 {
409 ++len;
410
411 if (isalpha ((unsigned char) codeset[cnt]))
412 only_digit = 0;
413 }
414
415 retval = (char *) malloc ((only_digit ? 3 : 0) + len + 1);
416
417 if (retval != NULL)
418 {
419 if (only_digit)
420 wp = stpcpy (retval, "iso");
421 else
422 wp = retval;
423
424 for (cnt = 0; cnt < name_len; ++cnt)
425 if (isalpha ((unsigned char) codeset[cnt]))
426 *wp++ = tolower ((unsigned char) codeset[cnt]);
427 else if (isdigit ((unsigned char) codeset[cnt]))
428 *wp++ = codeset[cnt];
429
430 *wp = '\0';
431 }
432
433 return (const char *) retval;
434 }
435
436
437 /* @@ begin of epilog @@ */
438
439 /* We don't want libintl.a to depend on any other library. So we
440 avoid the non-standard function stpcpy. In GNU C Library this
441 function is available, though. Also allow the symbol HAVE_STPCPY
442 to be defined. */
443 #if !_LIBC && !HAVE_STPCPY
444 static char *
445 stpcpy (dest, src)
446 char *dest;
447 const char *src;
448 {
449 while ((*dest++ = *src++) != '\0')
450 /* Do nothing. */ ;
451 return dest - 1;
452 }
453 #endif