Annotation of embedaddon/lrzsz/intl/l10nflist.c, revision 1.1.1.1
1.1 misho 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
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:
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:
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
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