/[zanavi_public1]/navit/intl/explodename.c
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Contents of /navit/intl/explodename.c

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Revision 2 - (show annotations) (download)
Fri Oct 28 21:19:04 2011 UTC (8 years, 9 months ago) by zoff99
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1 /* Copyright (C) 1995-1998, 2000-2001, 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 #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 *
41 _nl_find_language (const char *name)
42 {
43 while (name[0] != '\0' && name[0] != '_' && name[0] != '@'
44 && name[0] != '+' && name[0] != ',')
45 ++name;
46
47 return (char *) name;
48 }
49
50
51 int
52 _nl_explode_name (char *name,
53 const char **language, const char **modifier,
54 const char **territory, const char **codeset,
55 const char **normalized_codeset, const char **special,
56 const char **sponsor, const char **revision)
57 {
58 enum { undecided, xpg, cen } syntax;
59 char *cp;
60 int mask;
61
62 *modifier = NULL;
63 *territory = NULL;
64 *codeset = NULL;
65 *normalized_codeset = NULL;
66 *special = NULL;
67 *sponsor = NULL;
68 *revision = NULL;
69
70 /* Now we determine the single parts of the locale name. First
71 look for the language. Termination symbols are `_' and `@' if
72 we use XPG4 style, and `_', `+', and `,' if we use CEN syntax. */
73 mask = 0;
74 syntax = undecided;
75 *language = cp = name;
76 cp = _nl_find_language (*language);
77
78 if (*language == cp)
79 /* This does not make sense: language has to be specified. Use
80 this entry as it is without exploding. Perhaps it is an alias. */
81 cp = strchr (*language, '\0');
82 else if (cp[0] == '_')
83 {
84 /* Next is the territory. */
85 cp[0] = '\0';
86 *territory = ++cp;
87
88 while (cp[0] != '\0' && cp[0] != '.' && cp[0] != '@'
89 && cp[0] != '+' && cp[0] != ',' && cp[0] != '_')
90 ++cp;
91
92 mask |= TERRITORY;
93
94 if (cp[0] == '.')
95 {
96 /* Next is the codeset. */
97 syntax = xpg;
98 cp[0] = '\0';
99 *codeset = ++cp;
100
101 while (cp[0] != '\0' && cp[0] != '@')
102 ++cp;
103
104 mask |= XPG_CODESET;
105
106 if (*codeset != cp && (*codeset)[0] != '\0')
107 {
108 *normalized_codeset = _nl_normalize_codeset (*codeset,
109 cp - *codeset);
110 if (strcmp (*codeset, *normalized_codeset) == 0)
111 free ((char *) *normalized_codeset);
112 else
113 mask |= XPG_NORM_CODESET;
114 }
115 }
116 }
117
118 if (cp[0] == '@' || (syntax != xpg && cp[0] == '+'))
119 {
120 /* Next is the modifier. */
121 syntax = cp[0] == '@' ? xpg : cen;
122 cp[0] = '\0';
123 *modifier = ++cp;
124
125 while (syntax == cen && cp[0] != '\0' && cp[0] != '+'
126 && cp[0] != ',' && cp[0] != '_')
127 ++cp;
128
129 mask |= XPG_MODIFIER | CEN_AUDIENCE;
130 }
131
132 if (syntax != xpg && (cp[0] == '+' || cp[0] == ',' || cp[0] == '_'))
133 {
134 syntax = cen;
135
136 if (cp[0] == '+')
137 {
138 /* Next is special application (CEN syntax). */
139 cp[0] = '\0';
140 *special = ++cp;
141
142 while (cp[0] != '\0' && cp[0] != ',' && cp[0] != '_')
143 ++cp;
144
145 mask |= CEN_SPECIAL;
146 }
147
148 if (cp[0] == ',')
149 {
150 /* Next is sponsor (CEN syntax). */
151 cp[0] = '\0';
152 *sponsor = ++cp;
153
154 while (cp[0] != '\0' && cp[0] != '_')
155 ++cp;
156
157 mask |= CEN_SPONSOR;
158 }
159
160 if (cp[0] == '_')
161 {
162 /* Next is revision (CEN syntax). */
163 cp[0] = '\0';
164 *revision = ++cp;
165
166 mask |= CEN_REVISION;
167 }
168 }
169
170 /* For CEN syntax values it might be important to have the
171 separator character in the file name, not for XPG syntax. */
172 if (syntax == xpg)
173 {
174 if (*territory != NULL && (*territory)[0] == '\0')
175 mask &= ~TERRITORY;
176
177 if (*codeset != NULL && (*codeset)[0] == '\0')
178 mask &= ~XPG_CODESET;
179
180 if (*modifier != NULL && (*modifier)[0] == '\0')
181 mask &= ~XPG_MODIFIER;
182 }
183
184 return mask;
185 }

   
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