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252b5132 RH |
1 | /* Handle list of needed message catalogs |
2 | Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc. | |
3 | Written by Ulrich Drepper <[email protected]>, 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 | |
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 | |
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 * | |
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 | |
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 | \f | |
169 | struct loaded_l10nfile * | |
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 | \f | |
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 * | |
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 * | |
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 |