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[glibc.git] / intl / explodename.c
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1 /* Copyright (C) 1995-2002, 2003, 2006, 2007 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library 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 GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
19 #ifdef HAVE_CONFIG_H
20 # include <config.h>
21 #endif
23 #include <stdlib.h>
24 #include <string.h>
25 #include <sys/types.h>
27 #include "loadinfo.h"
29 /* On some strange systems still no definition of NULL is found. Sigh! */
30 #ifndef NULL
31 # if defined __STDC__ && __STDC__
32 # define NULL ((void *) 0)
33 # else
34 # define NULL 0
35 # endif
36 #endif
38 /* @@ end of prolog @@ */
40 static char *_nl_find_language PARAMS ((const char *name));
42 static char *
43 _nl_find_language (name)
44 const char *name;
46 while (name[0] != '\0' && name[0] != '_' && name[0] != '@' && name[0] != '.')
47 ++name;
49 return (char *) name;
53 int
54 _nl_explode_name (name, language, modifier, territory, codeset,
55 normalized_codeset)
56 char *name;
57 const char **language;
58 const char **modifier;
59 const char **territory;
60 const char **codeset;
61 const char **normalized_codeset;
63 char *cp;
64 int mask;
66 *modifier = NULL;
67 *territory = NULL;
68 *codeset = NULL;
69 *normalized_codeset = NULL;
71 /* Now we determine the single parts of the locale name. First
72 look for the language. Termination symbols are `_', '.', and `@'. */
73 mask = 0;
74 *language = cp = name;
75 cp = _nl_find_language (*language);
77 if (*language == cp)
78 /* This does not make sense: language has to be specified. Use
79 this entry as it is without exploding. Perhaps it is an alias. */
80 cp = __rawmemchr (*language, '\0');
81 else if (cp[0] != '@')
83 if (cp[0] == '_')
85 /* Next is the territory. */
86 cp[0] = '\0';
87 *territory = ++cp;
89 while (cp[0] != '\0' && cp[0] != '.' && cp[0] != '@')
90 ++cp;
92 mask |= XPG_TERRITORY;
95 if (cp[0] == '.')
97 /* Next is the codeset. */
98 cp[0] = '\0';
99 *codeset = ++cp;
101 while (cp[0] != '\0' && cp[0] != '@')
102 ++cp;
104 mask |= XPG_CODESET;
106 if (*codeset != cp && (*codeset)[0] != '\0')
108 *normalized_codeset = _nl_normalize_codeset (*codeset,
109 cp - *codeset);
110 if (*normalized_codeset == NULL)
111 return -1;
112 else if (strcmp (*codeset, *normalized_codeset) == 0)
113 free ((char *) *normalized_codeset);
114 else
115 mask |= XPG_NORM_CODESET;
120 if (cp[0] == '@')
122 /* Next is the modifier. */
123 cp[0] = '\0';
124 *modifier = ++cp;
126 if (cp[0] != '\0')
127 mask |= XPG_MODIFIER;
130 if (*territory != NULL && (*territory)[0] == '\0')
131 mask &= ~XPG_TERRITORY;
133 if (*codeset != NULL && (*codeset)[0] == '\0')
134 mask &= ~XPG_CODESET;
136 return mask;