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1 zoff99 2 /* Copyright (C) 1995-1999, 2000-2003 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    
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 (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
88     argz_count__ (const char *argz, size_t len)
89     {
90     size_t count = 0;
91     while (len > 0)
92     {
93     size_t part_len = strlen (argz);
94     argz += part_len + 1;
95     len -= part_len + 1;
96     count++;
97     }
98     return count;
99     }
100     # undef __argz_count
101     # define __argz_count(argz, len) argz_count__ (argz, len)
102     #else
103     # ifdef _LIBC
104     # define __argz_count(argz, len) INTUSE(__argz_count) (argz, len)
105     # endif
106     #endif /* !_LIBC && !HAVE___ARGZ_COUNT */
107    
108     #if !defined _LIBC && !defined HAVE___ARGZ_STRINGIFY
109     /* Make '\0' separated arg vector ARGZ printable by converting all the '\0's
110     except the last into the character SEP. */
111     static void
112     argz_stringify__ (char *argz, size_t len, int sep)
113     {
114     while (len > 0)
115     {
116     size_t part_len = strlen (argz);
117     argz += part_len;
118     len -= part_len + 1;
119     if (len > 0)
120     *argz++ = sep;
121     }
122     }
123     # undef __argz_stringify
124     # define __argz_stringify(argz, len, sep) argz_stringify__ (argz, len, sep)
125     #else
126     # ifdef _LIBC
127     # define __argz_stringify(argz, len, sep) \
128     INTUSE(__argz_stringify) (argz, len, sep)
129     # endif
130     #endif /* !_LIBC && !HAVE___ARGZ_STRINGIFY */
131    
132     #if !defined _LIBC && !defined HAVE___ARGZ_NEXT
133     static char *
134     argz_next__ (char *argz, size_t argz_len, 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 inline int
156     pop (int x)
157     {
158     /* We assume that no more than 16 bits are used. */
159     x = ((x & ~0x5555) >> 1) + (x & 0x5555);
160     x = ((x & ~0x3333) >> 2) + (x & 0x3333);
161     x = ((x >> 4) + x) & 0x0f0f;
162     x = ((x >> 8) + x) & 0xff;
163    
164     return x;
165     }
166    
167    
168     struct loaded_l10nfile *
169     _nl_make_l10nflist (struct loaded_l10nfile **l10nfile_list,
170     const char *dirlist, size_t dirlist_len,
171     int mask, const char *language, const char *territory,
172     const char *codeset, const char *normalized_codeset,
173     const char *modifier, const char *special,
174     const char *sponsor, const char *revision,
175     const char *filename, int do_allocate)
176     {
177     char *abs_filename;
178     struct loaded_l10nfile **lastp;
179     struct loaded_l10nfile *retval;
180     char *cp;
181     size_t dirlist_count;
182     size_t entries;
183     int cnt;
184    
185     /* If LANGUAGE contains an absolute directory specification, we ignore
186     DIRLIST. */
187     if (IS_ABSOLUTE_PATH (language))
188     dirlist_len = 0;
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) : 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     /* Construct file name. */
216     cp = abs_filename;
217     if (dirlist_len > 0)
218     {
219     memcpy (cp, dirlist, dirlist_len);
220     __argz_stringify (cp, dirlist_len, PATH_SEPARATOR);
221     cp += dirlist_len;
222     cp[-1] = '/';
223     }
224    
225     cp = stpcpy (cp, language);
226    
227     if ((mask & TERRITORY) != 0)
228     {
229     *cp++ = '_';
230     cp = stpcpy (cp, territory);
231     }
232     if ((mask & XPG_CODESET) != 0)
233     {
234     *cp++ = '.';
235     cp = stpcpy (cp, codeset);
236     }
237     if ((mask & XPG_NORM_CODESET) != 0)
238     {
239     *cp++ = '.';
240     cp = stpcpy (cp, normalized_codeset);
241     }
242     if ((mask & (XPG_MODIFIER | CEN_AUDIENCE)) != 0)
243     {
244     /* This component can be part of both syntaces but has different
245     leading characters. For CEN we use `+', else `@'. */
246     *cp++ = (mask & CEN_AUDIENCE) != 0 ? '+' : '@';
247     cp = stpcpy (cp, modifier);
248     }
249     if ((mask & CEN_SPECIAL) != 0)
250     {
251     *cp++ = '+';
252     cp = stpcpy (cp, special);
253     }
254     if ((mask & (CEN_SPONSOR | CEN_REVISION)) != 0)
255     {
256     *cp++ = ',';
257     if ((mask & CEN_SPONSOR) != 0)
258     cp = stpcpy (cp, sponsor);
259     if ((mask & CEN_REVISION) != 0)
260     {
261     *cp++ = '_';
262     cp = stpcpy (cp, revision);
263     }
264     }
265    
266     *cp++ = '/';
267     stpcpy (cp, filename);
268    
269     /* Look in list of already loaded domains whether it is already
270     available. */
271     lastp = l10nfile_list;
272     for (retval = *l10nfile_list; retval != NULL; retval = retval->next)
273     if (retval->filename != NULL)
274     {
275     int compare = strcmp (retval->filename, abs_filename);
276     if (compare == 0)
277     /* We found it! */
278     break;
279     if (compare < 0)
280     {
281     /* It's not in the list. */
282     retval = NULL;
283     break;
284     }
285    
286     lastp = &retval->next;
287     }
288    
289     if (retval != NULL || do_allocate == 0)
290     {
291     free (abs_filename);
292     return retval;
293     }
294    
295     dirlist_count = (dirlist_len > 0 ? __argz_count (dirlist, dirlist_len) : 1);
296    
297     /* Allocate a new loaded_l10nfile. */
298     retval =
299     (struct loaded_l10nfile *)
300     malloc (sizeof (*retval)
301     + (((dirlist_count << pop (mask)) + (dirlist_count > 1 ? 1 : 0))
302     * sizeof (struct loaded_l10nfile *)));
303     if (retval == NULL)
304     return NULL;
305    
306     retval->filename = abs_filename;
307    
308     /* We set retval->data to NULL here; it is filled in later.
309     Setting retval->decided to 1 here means that retval does not
310     correspond to a real file (dirlist_count > 1) or is not worth
311     looking up (if an unnormalized codeset was specified). */
312     retval->decided = (dirlist_count > 1
313     || ((mask & XPG_CODESET) != 0
314     && (mask & XPG_NORM_CODESET) != 0));
315     retval->data = NULL;
316    
317     retval->next = *lastp;
318     *lastp = retval;
319    
320     entries = 0;
321     /* Recurse to fill the inheritance list of RETVAL.
322     If the DIRLIST is a real list (i.e. DIRLIST_COUNT > 1), the RETVAL
323     entry does not correspond to a real file; retval->filename contains
324     colons. In this case we loop across all elements of DIRLIST and
325     across all bit patterns dominated by MASK.
326     If the DIRLIST is a single directory or entirely redundant (i.e.
327     DIRLIST_COUNT == 1), we loop across all bit patterns dominated by
328     MASK, excluding MASK itself.
329     In either case, we loop down from MASK to 0. This has the effect
330     that the extra bits in the locale name are dropped in this order:
331     first the modifier, then the territory, then the codeset, then the
332     normalized_codeset. */
333     for (cnt = dirlist_count > 1 ? mask : mask - 1; cnt >= 0; --cnt)
334     if ((cnt & ~mask) == 0
335     && ((cnt & CEN_SPECIFIC) == 0 || (cnt & XPG_SPECIFIC) == 0)
336     && ((cnt & XPG_CODESET) == 0 || (cnt & XPG_NORM_CODESET) == 0))
337     {
338     if (dirlist_count > 1)
339     {
340     /* Iterate over all elements of the DIRLIST. */
341     char *dir = NULL;
342    
343     while ((dir = __argz_next ((char *) dirlist, dirlist_len, dir))
344     != NULL)
345     retval->successor[entries++]
346     = _nl_make_l10nflist (l10nfile_list, dir, strlen (dir) + 1,
347     cnt, language, territory, codeset,
348     normalized_codeset, modifier, special,
349     sponsor, revision, filename, 1);
350     }
351     else
352     retval->successor[entries++]
353     = _nl_make_l10nflist (l10nfile_list, dirlist, dirlist_len,
354     cnt, language, territory, codeset,
355     normalized_codeset, modifier, special,
356     sponsor, revision, filename, 1);
357     }
358     retval->successor[entries] = NULL;
359    
360     return retval;
361     }
362    
363     /* Normalize codeset name. There is no standard for the codeset
364     names. Normalization allows the user to use any of the common
365     names. The return value is dynamically allocated and has to be
366     freed by the caller. */
367     const char *
368     _nl_normalize_codeset (const char *codeset, size_t name_len)
369     {
370     int len = 0;
371     int only_digit = 1;
372     char *retval;
373     char *wp;
374     size_t cnt;
375    
376     for (cnt = 0; cnt < name_len; ++cnt)
377     if (isalnum ((unsigned char) codeset[cnt]))
378     {
379     ++len;
380    
381     if (isalpha ((unsigned char) codeset[cnt]))
382     only_digit = 0;
383     }
384    
385     retval = (char *) malloc ((only_digit ? 3 : 0) + len + 1);
386    
387     if (retval != NULL)
388     {
389     if (only_digit)
390     wp = stpcpy (retval, "iso");
391     else
392     wp = retval;
393    
394     for (cnt = 0; cnt < name_len; ++cnt)
395     if (isalpha ((unsigned char) codeset[cnt]))
396     *wp++ = tolower ((unsigned char) codeset[cnt]);
397     else if (isdigit ((unsigned char) codeset[cnt]))
398     *wp++ = codeset[cnt];
399    
400     *wp = '\0';
401     }
402    
403     return (const char *) retval;
404     }
405    
406    
407     /* @@ begin of epilog @@ */
408    
409     /* We don't want libintl.a to depend on any other library. So we
410     avoid the non-standard function stpcpy. In GNU C Library this
411     function is available, though. Also allow the symbol HAVE_STPCPY
412     to be defined. */
413     #if !_LIBC && !HAVE_STPCPY
414     static char *
415     stpcpy (char *dest, const char *src)
416     {
417     while ((*dest++ = *src++) != '\0')
418     /* Do nothing. */ ;
419     return dest - 1;
420     }
421     #endif

   
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