1 /* Copyright (C) 1995-1998, 2000, 2001 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301,
17    USA.  */
18 
19 #ifdef HAVE_CONFIG_H
20 # include <config.h>
21 #endif
22 
23 #include <stdlib.h>
24 #include <string.h>
25 #include <sys/types.h>
26 
27 #include "loadinfo.h"
28 
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
37 
38 /* @@ end of prolog @@ */
39 
40 char *
_nl_find_language(name)41 _nl_find_language (name)
42      const char *name;
43 {
44   while (name[0] != '\0' && name[0] != '_' && name[0] != '@'
45 	 && name[0] != '+' && name[0] != ',')
46     ++name;
47 
48   return (char *) name;
49 }
50 
51 
52 int
_nl_explode_name(name,language,modifier,territory,codeset,normalized_codeset,special,sponsor,revision)53 _nl_explode_name (name, language, modifier, territory, codeset,
54 		  normalized_codeset, special, sponsor, revision)
55      char *name;
56      const char **language;
57      const char **modifier;
58      const char **territory;
59      const char **codeset;
60      const char **normalized_codeset;
61      const char **special;
62      const char **sponsor;
63      const char **revision;
64 {
65   enum { undecided, xpg, cen } syntax;
66   char *cp;
67   int mask;
68 
69   *modifier = NULL;
70   *territory = NULL;
71   *codeset = NULL;
72   *normalized_codeset = NULL;
73   *special = NULL;
74   *sponsor = NULL;
75   *revision = NULL;
76 
77   /* Now we determine the single parts of the locale name.  First
78      look for the language.  Termination symbols are `_' and `@' if
79      we use XPG4 style, and `_', `+', and `,' if we use CEN syntax.  */
80   mask = 0;
81   syntax = undecided;
82   *language = cp = name;
83   cp = _nl_find_language (*language);
84 
85   if (*language == cp)
86     /* This does not make sense: language has to be specified.  Use
87        this entry as it is without exploding.  Perhaps it is an alias.  */
88     cp = strchr (*language, '\0');
89   else if (cp[0] == '_')
90     {
91       /* Next is the territory.  */
92       cp[0] = '\0';
93       *territory = ++cp;
94 
95       while (cp[0] != '\0' && cp[0] != '.' && cp[0] != '@'
96 	     && cp[0] != '+' && cp[0] != ',' && cp[0] != '_')
97 	++cp;
98 
99       mask |= TERRITORY;
100 
101       if (cp[0] == '.')
102 	{
103 	  /* Next is the codeset.  */
104 	  syntax = xpg;
105 	  cp[0] = '\0';
106 	  *codeset = ++cp;
107 
108 	  while (cp[0] != '\0' && cp[0] != '@')
109 	    ++cp;
110 
111 	  mask |= XPG_CODESET;
112 
113 	  if (*codeset != cp && (*codeset)[0] != '\0')
114 	    {
115 	      *normalized_codeset = _nl_normalize_codeset (*codeset,
116 							   cp - *codeset);
117 	      if (strcmp (*codeset, *normalized_codeset) == 0)
118 		free ((char *) *normalized_codeset);
119 	      else
120 		mask |= XPG_NORM_CODESET;
121 	    }
122 	}
123     }
124 
125   if (cp[0] == '@' || (syntax != xpg && cp[0] == '+'))
126     {
127       /* Next is the modifier.  */
128       syntax = cp[0] == '@' ? xpg : cen;
129       cp[0] = '\0';
130       *modifier = ++cp;
131 
132       while (syntax == cen && cp[0] != '\0' && cp[0] != '+'
133 	     && cp[0] != ',' && cp[0] != '_')
134 	++cp;
135 
136       mask |= XPG_MODIFIER | CEN_AUDIENCE;
137     }
138 
139   if (syntax != xpg && (cp[0] == '+' || cp[0] == ',' || cp[0] == '_'))
140     {
141       syntax = cen;
142 
143       if (cp[0] == '+')
144 	{
145  	  /* Next is special application (CEN syntax).  */
146 	  cp[0] = '\0';
147 	  *special = ++cp;
148 
149 	  while (cp[0] != '\0' && cp[0] != ',' && cp[0] != '_')
150 	    ++cp;
151 
152 	  mask |= CEN_SPECIAL;
153 	}
154 
155       if (cp[0] == ',')
156 	{
157  	  /* Next is sponsor (CEN syntax).  */
158 	  cp[0] = '\0';
159 	  *sponsor = ++cp;
160 
161 	  while (cp[0] != '\0' && cp[0] != '_')
162 	    ++cp;
163 
164 	  mask |= CEN_SPONSOR;
165 	}
166 
167       if (cp[0] == '_')
168 	{
169  	  /* Next is revision (CEN syntax).  */
170 	  cp[0] = '\0';
171 	  *revision = ++cp;
172 
173 	  mask |= CEN_REVISION;
174 	}
175     }
176 
177   /* For CEN syntax values it might be important to have the
178      separator character in the file name, not for XPG syntax.  */
179   if (syntax == xpg)
180     {
181       if (*territory != NULL && (*territory)[0] == '\0')
182 	mask &= ~TERRITORY;
183 
184       if (*codeset != NULL && (*codeset)[0] == '\0')
185 	mask &= ~XPG_CODESET;
186 
187       if (*modifier != NULL && (*modifier)[0] == '\0')
188 	mask &= ~XPG_MODIFIER;
189     }
190 
191   return mask;
192 }
193