1 /* Handle list of needed message catalogs
2 Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
3 Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2, or (at your option)
8 any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software Foundation,
17 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
18
19 #ifdef HAVE_CONFIG_H
20 # include <config.h>
21 #endif
22
23
24 #if defined HAVE_STRING_H || defined _LIBC
25 # ifndef _GNU_SOURCE
26 # define _GNU_SOURCE 1
27 # endif
28 # include <string.h>
29 #else
30 # include <strings.h>
31 # ifndef memcpy
32 # define memcpy(Dst, Src, Num) bcopy (Src, Dst, Num)
33 # endif
34 #endif
35 #if !HAVE_STRCHR && !defined _LIBC
36 # ifndef strchr
37 # define strchr index
38 # endif
39 #endif
40
41 #if defined _LIBC || defined HAVE_ARGZ_H
42 # include <argz.h>
43 #endif
44 #include <ctype.h>
45 #include <sys/types.h>
46
47 #if defined STDC_HEADERS || defined _LIBC
48 # include <stdlib.h>
49 #endif
50
51 #include "loadinfo.h"
52
53 /* On some strange systems still no definition of NULL is found. Sigh! */
54 #ifndef NULL
55 # if defined __STDC__ && __STDC__
56 # define NULL ((void *) 0)
57 # else
58 # define NULL 0
59 # endif
60 #endif
61
62 /* @@ end of prolog @@ */
63
64 #ifdef _LIBC
65 /* Rename the non ANSI C functions. This is required by the standard
66 because some ANSI C functions will require linking with this object
67 file and the name space must not be polluted. */
68 # define stpcpy(dest, src) __stpcpy(dest, src)
69 #else
70 # ifndef HAVE_STPCPY
71 static char *stpcpy PARAMS ((char *dest, const char *src));
72 # endif
73 #endif
74
75 /* Define function which are usually not available. */
76
77 #if !defined _LIBC && !defined HAVE___ARGZ_COUNT
78 /* Returns the number of strings in ARGZ. */
79 static size_t argz_count__ PARAMS ((const char *argz, size_t len));
80
81 static size_t
argz_count__(argz,len)82 argz_count__ (argz, len)
83 const char *argz;
84 size_t len;
85 {
86 size_t count = 0;
87 while (len > 0)
88 {
89 size_t part_len = strlen (argz);
90 argz += part_len + 1;
91 len -= part_len + 1;
92 count++;
93 }
94 return count;
95 }
96 # undef __argz_count
97 # define __argz_count(argz, len) argz_count__ (argz, len)
98 #endif /* !_LIBC && !HAVE___ARGZ_COUNT */
99
100 #if !defined _LIBC && !defined HAVE___ARGZ_STRINGIFY
101 /* Make '\0' separated arg vector ARGZ printable by converting all the '\0's
102 except the last into the character SEP. */
103 static void argz_stringify__ PARAMS ((char *argz, size_t len, int sep));
104
105 static void
argz_stringify__(argz,len,sep)106 argz_stringify__ (argz, len, sep)
107 char *argz;
108 size_t len;
109 int sep;
110 {
111 while (len > 0)
112 {
113 size_t part_len = strlen (argz);
114 argz += part_len;
115 len -= part_len + 1;
116 if (len > 0)
117 *argz++ = sep;
118 }
119 }
120 # undef __argz_stringify
121 # define __argz_stringify(argz, len, sep) argz_stringify__ (argz, len, sep)
122 #endif /* !_LIBC && !HAVE___ARGZ_STRINGIFY */
123
124 #if !defined _LIBC && !defined HAVE___ARGZ_NEXT
125 static char *argz_next__ PARAMS ((char *argz, size_t argz_len,
126 const char *entry));
127
128 static char *
argz_next__(argz,argz_len,entry)129 argz_next__ (argz, argz_len, entry)
130 char *argz;
131 size_t argz_len;
132 const char *entry;
133 {
134 if (entry)
135 {
136 if (entry < argz + argz_len)
137 entry = strchr (entry, '\0') + 1;
138
139 return entry >= argz + argz_len ? NULL : (char *) entry;
140 }
141 else
142 if (argz_len > 0)
143 return argz;
144 else
145 return 0;
146 }
147 # undef __argz_next
148 # define __argz_next(argz, len, entry) argz_next__ (argz, len, entry)
149 #endif /* !_LIBC && !HAVE___ARGZ_NEXT */
150
151
152 /* Return number of bits set in X. */
153 static int pop PARAMS ((int x));
154
155 static inline int
pop(x)156 pop (x)
157 int x;
158 {
159 /* We assume that no more than 16 bits are used. */
160 x = ((x & ~0x5555) >> 1) + (x & 0x5555);
161 x = ((x & ~0x3333) >> 2) + (x & 0x3333);
162 x = ((x >> 4) + x) & 0x0f0f;
163 x = ((x >> 8) + x) & 0xff;
164
165 return x;
166 }
167
168
169 struct loaded_l10nfile *
_nl_make_l10nflist(l10nfile_list,dirlist,dirlist_len,mask,language,territory,codeset,normalized_codeset,modifier,special,sponsor,revision,filename,do_allocate)170 _nl_make_l10nflist (l10nfile_list, dirlist, dirlist_len, mask, language,
171 territory, codeset, normalized_codeset, modifier, special,
172 sponsor, revision, filename, do_allocate)
173 struct loaded_l10nfile **l10nfile_list;
174 const char *dirlist;
175 size_t dirlist_len;
176 int mask;
177 const char *language;
178 const char *territory;
179 const char *codeset;
180 const char *normalized_codeset;
181 const char *modifier;
182 const char *special;
183 const char *sponsor;
184 const char *revision;
185 const char *filename;
186 int do_allocate;
187 {
188 char *abs_filename;
189 struct loaded_l10nfile *last = NULL;
190 struct loaded_l10nfile *retval;
191 char *cp;
192 size_t entries;
193 int cnt;
194
195 /* Allocate room for the full file name. */
196 abs_filename = (char *) malloc (dirlist_len
197 + strlen (language)
198 + ((mask & TERRITORY) != 0
199 ? strlen (territory) + 1 : 0)
200 + ((mask & XPG_CODESET) != 0
201 ? strlen (codeset) + 1 : 0)
202 + ((mask & XPG_NORM_CODESET) != 0
203 ? strlen (normalized_codeset) + 1 : 0)
204 + (((mask & XPG_MODIFIER) != 0
205 || (mask & CEN_AUDIENCE) != 0)
206 ? strlen (modifier) + 1 : 0)
207 + ((mask & CEN_SPECIAL) != 0
208 ? strlen (special) + 1 : 0)
209 + (((mask & CEN_SPONSOR) != 0
210 || (mask & CEN_REVISION) != 0)
211 ? (1 + ((mask & CEN_SPONSOR) != 0
212 ? strlen (sponsor) + 1 : 0)
213 + ((mask & CEN_REVISION) != 0
214 ? strlen (revision) + 1 : 0)) : 0)
215 + 1 + strlen (filename) + 1);
216
217 if (abs_filename == NULL)
218 return NULL;
219
220 retval = NULL;
221 last = NULL;
222
223 /* Construct file name. */
224 memcpy (abs_filename, dirlist, dirlist_len);
225 __argz_stringify (abs_filename, dirlist_len, ':');
226 cp = abs_filename + (dirlist_len - 1);
227 *cp++ = '/';
228 cp = stpcpy (cp, language);
229
230 if ((mask & TERRITORY) != 0)
231 {
232 *cp++ = '_';
233 cp = stpcpy (cp, territory);
234 }
235 if ((mask & XPG_CODESET) != 0)
236 {
237 *cp++ = '.';
238 cp = stpcpy (cp, codeset);
239 }
240 if ((mask & XPG_NORM_CODESET) != 0)
241 {
242 *cp++ = '.';
243 cp = stpcpy (cp, normalized_codeset);
244 }
245 if ((mask & (XPG_MODIFIER | CEN_AUDIENCE)) != 0)
246 {
247 /* This component can be part of both syntaces but has different
248 leading characters. For CEN we use `+', else `@'. */
249 *cp++ = (mask & CEN_AUDIENCE) != 0 ? '+' : '@';
250 cp = stpcpy (cp, modifier);
251 }
252 if ((mask & CEN_SPECIAL) != 0)
253 {
254 *cp++ = '+';
255 cp = stpcpy (cp, special);
256 }
257 if ((mask & (CEN_SPONSOR | CEN_REVISION)) != 0)
258 {
259 *cp++ = ',';
260 if ((mask & CEN_SPONSOR) != 0)
261 cp = stpcpy (cp, sponsor);
262 if ((mask & CEN_REVISION) != 0)
263 {
264 *cp++ = '_';
265 cp = stpcpy (cp, revision);
266 }
267 }
268
269 *cp++ = '/';
270 stpcpy (cp, filename);
271
272 /* Look in list of already loaded domains whether it is already
273 available. */
274 last = NULL;
275 for (retval = *l10nfile_list; retval != NULL; retval = retval->next)
276 if (retval->filename != NULL)
277 {
278 int compare = strcmp (retval->filename, abs_filename);
279 if (compare == 0)
280 /* We found it! */
281 break;
282 if (compare < 0)
283 {
284 /* It's not in the list. */
285 retval = NULL;
286 break;
287 }
288
289 last = retval;
290 }
291
292 if (retval != NULL || do_allocate == 0)
293 {
294 free (abs_filename);
295 return retval;
296 }
297
298 retval = (struct loaded_l10nfile *)
299 malloc (sizeof (*retval) + (__argz_count (dirlist, dirlist_len)
300 * (1 << pop (mask))
301 * sizeof (struct loaded_l10nfile *)));
302 if (retval == NULL)
303 return NULL;
304
305 retval->filename = abs_filename;
306 retval->decided = (__argz_count (dirlist, dirlist_len) != 1
307 || ((mask & XPG_CODESET) != 0
308 && (mask & XPG_NORM_CODESET) != 0));
309 retval->data = NULL;
310
311 if (last == NULL)
312 {
313 retval->next = *l10nfile_list;
314 *l10nfile_list = retval;
315 }
316 else
317 {
318 retval->next = last->next;
319 last->next = retval;
320 }
321
322 entries = 0;
323 /* If the DIRLIST is a real list the RETVAL entry corresponds not to
324 a real file. So we have to use the DIRLIST separation mechanism
325 of the inner loop. */
326 cnt = __argz_count (dirlist, dirlist_len) == 1 ? mask - 1 : mask;
327 for (; cnt >= 0; --cnt)
328 if ((cnt & ~mask) == 0
329 && ((cnt & CEN_SPECIFIC) == 0 || (cnt & XPG_SPECIFIC) == 0)
330 && ((cnt & XPG_CODESET) == 0 || (cnt & XPG_NORM_CODESET) == 0))
331 {
332 /* Iterate over all elements of the DIRLIST. */
333 char *dir = NULL;
334
335 while ((dir = __argz_next ((char *) dirlist, dirlist_len, dir))
336 != NULL)
337 retval->successor[entries++]
338 = _nl_make_l10nflist (l10nfile_list, dir, strlen (dir) + 1, cnt,
339 language, territory, codeset,
340 normalized_codeset, modifier, special,
341 sponsor, revision, filename, 1);
342 }
343 retval->successor[entries] = NULL;
344
345 return retval;
346 }
347
348 /* Normalize codeset name. There is no standard for the codeset
349 names. Normalization allows the user to use any of the common
350 names. */
351 const char *
_nl_normalize_codeset(codeset,name_len)352 _nl_normalize_codeset (codeset, name_len)
353 const char *codeset;
354 size_t name_len;
355 {
356 int len = 0;
357 int only_digit = 1;
358 char *retval;
359 char *wp;
360 size_t cnt;
361
362 for (cnt = 0; cnt < name_len; ++cnt)
363 if (isalnum (codeset[cnt]))
364 {
365 ++len;
366
367 if (isalpha (codeset[cnt]))
368 only_digit = 0;
369 }
370
371 retval = (char *) malloc ((only_digit ? 3 : 0) + len + 1);
372
373 if (retval != NULL)
374 {
375 if (only_digit)
376 wp = stpcpy (retval, "iso");
377 else
378 wp = retval;
379
380 for (cnt = 0; cnt < name_len; ++cnt)
381 if (isalpha (codeset[cnt]))
382 *wp++ = tolower (codeset[cnt]);
383 else if (isdigit (codeset[cnt]))
384 *wp++ = codeset[cnt];
385
386 *wp = '\0';
387 }
388
389 return (const char *) retval;
390 }
391
392
393 /* @@ begin of epilog @@ */
394
395 /* We don't want libintl.a to depend on any other library. So we
396 avoid the non-standard function stpcpy. In GNU C Library this
397 function is available, though. Also allow the symbol HAVE_STPCPY
398 to be defined. */
399 #if !_LIBC && !HAVE_STPCPY
400 static char *
stpcpy(dest,src)401 stpcpy (dest, src)
402 char *dest;
403 const char *src;
404 {
405 while ((*dest++ = *src++) != '\0')
406 /* Do nothing. */ ;
407 return dest - 1;
408 }
409 #endif
410