1 /* Handle list of needed message catalogs
2 Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
3 Contributed 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 # ifndef stpcpy
69 # define stpcpy(dest, src) __stpcpy(dest, src)
70 # endif
71 #else
72 # ifndef HAVE_STPCPY
73 static char *stpcpy PARAMS ((char *dest, const char *src));
74 # endif
75 #endif
76
77 /* Define function which are usually not available. */
78
79 #if !defined _LIBC && !defined HAVE___ARGZ_COUNT
80 /* Returns the number of strings in ARGZ. */
81 static size_t argz_count__ PARAMS ((const char *argz, size_t len));
82
83 static size_t
argz_count__(argz,len)84 argz_count__ (argz, len)
85 const char *argz;
86 size_t len;
87 {
88 size_t count = 0;
89 while (len > 0)
90 {
91 size_t part_len = strlen (argz);
92 argz += part_len + 1;
93 len -= part_len + 1;
94 count++;
95 }
96 return count;
97 }
98 # undef __argz_count
99 # define __argz_count(argz, len) argz_count__ (argz, len)
100 #endif /* !_LIBC && !HAVE___ARGZ_COUNT */
101
102 #if !defined _LIBC && !defined HAVE___ARGZ_STRINGIFY
103 /* Make '\0' separated arg vector ARGZ printable by converting all the '\0's
104 except the last into the character SEP. */
105 static void argz_stringify__ PARAMS ((char *argz, size_t len, int sep));
106
107 static void
argz_stringify__(argz,len,sep)108 argz_stringify__ (argz, len, sep)
109 char *argz;
110 size_t len;
111 int sep;
112 {
113 while (len > 0)
114 {
115 size_t part_len = strlen (argz);
116 argz += part_len;
117 len -= part_len + 1;
118 if (len > 0)
119 *argz++ = sep;
120 }
121 }
122 # undef __argz_stringify
123 # define __argz_stringify(argz, len, sep) argz_stringify__ (argz, len, sep)
124 #endif /* !_LIBC && !HAVE___ARGZ_STRINGIFY */
125
126 #if !defined _LIBC && !defined HAVE___ARGZ_NEXT
127 static char *argz_next__ PARAMS ((char *argz, size_t argz_len,
128 const char *entry));
129
130 static char *
argz_next__(argz,argz_len,entry)131 argz_next__ (argz, argz_len, entry)
132 char *argz;
133 size_t argz_len;
134 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 int pop PARAMS ((int x));
156
157 static inline int
pop(x)158 pop (x)
159 int x;
160 {
161 /* We assume that no more than 16 bits are used. */
162 x = ((x & ~0x5555) >> 1) + (x & 0x5555);
163 x = ((x & ~0x3333) >> 2) + (x & 0x3333);
164 x = ((x >> 4) + x) & 0x0f0f;
165 x = ((x >> 8) + x) & 0xff;
166
167 return x;
168 }
169
170
171 struct loaded_l10nfile *
_nl_make_l10nflist(l10nfile_list,dirlist,dirlist_len,mask,language,territory,codeset,normalized_codeset,modifier,special,sponsor,revision,filename,do_allocate)172 _nl_make_l10nflist (l10nfile_list, dirlist, dirlist_len, mask, language,
173 territory, codeset, normalized_codeset, modifier, special,
174 sponsor, revision, filename, do_allocate)
175 struct loaded_l10nfile **l10nfile_list;
176 const char *dirlist;
177 size_t dirlist_len;
178 int mask;
179 const char *language;
180 const char *territory;
181 const char *codeset;
182 const char *normalized_codeset;
183 const char *modifier;
184 const char *special;
185 const char *sponsor;
186 const char *revision;
187 const char *filename;
188 int do_allocate;
189 {
190 char *abs_filename;
191 struct loaded_l10nfile *last = NULL;
192 struct loaded_l10nfile *retval;
193 char *cp;
194 size_t entries;
195 int cnt;
196
197 /* Allocate room for the full file name. */
198 abs_filename = (char *) malloc (dirlist_len
199 + strlen (language)
200 + ((mask & TERRITORY) != 0
201 ? strlen (territory) + 1 : 0)
202 + ((mask & XPG_CODESET) != 0
203 ? strlen (codeset) + 1 : 0)
204 + ((mask & XPG_NORM_CODESET) != 0
205 ? strlen (normalized_codeset) + 1 : 0)
206 + (((mask & XPG_MODIFIER) != 0
207 || (mask & CEN_AUDIENCE) != 0)
208 ? strlen (modifier) + 1 : 0)
209 + ((mask & CEN_SPECIAL) != 0
210 ? strlen (special) + 1 : 0)
211 + (((mask & CEN_SPONSOR) != 0
212 || (mask & CEN_REVISION) != 0)
213 ? (1 + ((mask & CEN_SPONSOR) != 0
214 ? strlen (sponsor) + 1 : 0)
215 + ((mask & CEN_REVISION) != 0
216 ? strlen (revision) + 1 : 0)) : 0)
217 + 1 + strlen (filename) + 1);
218
219 if (abs_filename == NULL)
220 return NULL;
221
222 retval = NULL;
223 last = NULL;
224
225 /* Construct file name. */
226 memcpy (abs_filename, dirlist, dirlist_len);
227 __argz_stringify (abs_filename, dirlist_len, ':');
228 cp = abs_filename + (dirlist_len - 1);
229 *cp++ = '/';
230 cp = stpcpy (cp, language);
231
232 if ((mask & TERRITORY) != 0)
233 {
234 *cp++ = '_';
235 cp = stpcpy (cp, territory);
236 }
237 if ((mask & XPG_CODESET) != 0)
238 {
239 *cp++ = '.';
240 cp = stpcpy (cp, codeset);
241 }
242 if ((mask & XPG_NORM_CODESET) != 0)
243 {
244 *cp++ = '.';
245 cp = stpcpy (cp, normalized_codeset);
246 }
247 if ((mask & (XPG_MODIFIER | CEN_AUDIENCE)) != 0)
248 {
249 /* This component can be part of both syntaces but has different
250 leading characters. For CEN we use `+', else `@'. */
251 *cp++ = (mask & CEN_AUDIENCE) != 0 ? '+' : '@';
252 cp = stpcpy (cp, modifier);
253 }
254 if ((mask & CEN_SPECIAL) != 0)
255 {
256 *cp++ = '+';
257 cp = stpcpy (cp, special);
258 }
259 if ((mask & (CEN_SPONSOR | CEN_REVISION)) != 0)
260 {
261 *cp++ = ',';
262 if ((mask & CEN_SPONSOR) != 0)
263 cp = stpcpy (cp, sponsor);
264 if ((mask & CEN_REVISION) != 0)
265 {
266 *cp++ = '_';
267 cp = stpcpy (cp, revision);
268 }
269 }
270
271 *cp++ = '/';
272 stpcpy (cp, filename);
273
274 /* Look in list of already loaded domains whether it is already
275 available. */
276 last = NULL;
277 for (retval = *l10nfile_list; retval != NULL; retval = retval->next)
278 if (retval->filename != NULL)
279 {
280 int compare = strcmp (retval->filename, abs_filename);
281 if (compare == 0)
282 /* We found it! */
283 break;
284 if (compare < 0)
285 {
286 /* It's not in the list. */
287 retval = NULL;
288 break;
289 }
290
291 last = retval;
292 }
293
294 if (retval != NULL || do_allocate == 0)
295 {
296 free (abs_filename);
297 return retval;
298 }
299
300 retval = (struct loaded_l10nfile *)
301 malloc (sizeof (*retval) + (__argz_count (dirlist, dirlist_len)
302 * (1 << pop (mask))
303 * sizeof (struct loaded_l10nfile *)));
304 if (retval == NULL)
305 return NULL;
306
307 retval->filename = abs_filename;
308 retval->decided = (__argz_count (dirlist, dirlist_len) != 1
309 || ((mask & XPG_CODESET) != 0
310 && (mask & XPG_NORM_CODESET) != 0));
311 retval->data = NULL;
312
313 if (last == NULL)
314 {
315 retval->next = *l10nfile_list;
316 *l10nfile_list = retval;
317 }
318 else
319 {
320 retval->next = last->next;
321 last->next = retval;
322 }
323
324 entries = 0;
325 /* If the DIRLIST is a real list the RETVAL entry corresponds not to
326 a real file. So we have to use the DIRLIST separation mechanism
327 of the inner loop. */
328 cnt = __argz_count (dirlist, dirlist_len) == 1 ? mask - 1 : mask;
329 for (; cnt >= 0; --cnt)
330 if ((cnt & ~mask) == 0
331 && ((cnt & CEN_SPECIFIC) == 0 || (cnt & XPG_SPECIFIC) == 0)
332 && ((cnt & XPG_CODESET) == 0 || (cnt & XPG_NORM_CODESET) == 0))
333 {
334 /* Iterate over all elements of the DIRLIST. */
335 char *dir = NULL;
336
337 while ((dir = __argz_next ((char *) dirlist, dirlist_len, dir))
338 != NULL)
339 retval->successor[entries++]
340 = _nl_make_l10nflist (l10nfile_list, dir, strlen (dir) + 1, cnt,
341 language, territory, codeset,
342 normalized_codeset, modifier, special,
343 sponsor, revision, filename, 1);
344 }
345 retval->successor[entries] = NULL;
346
347 return retval;
348 }
349
350 /* Normalize codeset name. There is no standard for the codeset
351 names. Normalization allows the user to use any of the common
352 names. */
353 const char *
_nl_normalize_codeset(codeset,name_len)354 _nl_normalize_codeset (codeset, name_len)
355 const unsigned char *codeset;
356 size_t name_len;
357 {
358 int len = 0;
359 int only_digit = 1;
360 char *retval;
361 char *wp;
362 size_t cnt;
363
364 for (cnt = 0; cnt < name_len; ++cnt)
365 if (isalnum (codeset[cnt]))
366 {
367 ++len;
368
369 if (isalpha (codeset[cnt]))
370 only_digit = 0;
371 }
372
373 retval = (char *) malloc ((only_digit ? 3 : 0) + len + 1);
374
375 if (retval != NULL)
376 {
377 if (only_digit)
378 wp = stpcpy (retval, "iso");
379 else
380 wp = retval;
381
382 for (cnt = 0; cnt < name_len; ++cnt)
383 if (isalpha (codeset[cnt]))
384 *wp++ = tolower (codeset[cnt]);
385 else if (isdigit (codeset[cnt]))
386 *wp++ = codeset[cnt];
387
388 *wp = '\0';
389 }
390
391 return (const char *) retval;
392 }
393
394
395 /* @@ begin of epilog @@ */
396
397 /* We don't want libintl.a to depend on any other library. So we
398 avoid the non-standard function stpcpy. In GNU C Library this
399 function is available, though. Also allow the symbol HAVE_STPCPY
400 to be defined. */
401 #if !_LIBC && !HAVE_STPCPY
402 static char *
stpcpy(dest,src)403 stpcpy (dest, src)
404 char *dest;
405 const char *src;
406 {
407 while ((*dest++ = *src++) != '\0')
408 /* Do nothing. */ ;
409 return dest - 1;
410 }
411 #endif
412