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c84142e8 | 1 | /* Copyright (C) 1996, 1997 Free Software Foundation, Inc. |
2c6fe0bd UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>. | |
a641835a | 4 | |
2c6fe0bd UD |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Library General Public License as | |
7 | published by the Free Software Foundation; either version 2 of the | |
8 | License, or (at your option) any later version. | |
a641835a | 9 | |
2c6fe0bd UD |
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 | Library General Public License for more details. | |
a641835a | 14 | |
2c6fe0bd UD |
15 | You should have received a copy of the GNU Library General Public |
16 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
17 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
18 | Boston, MA 02111-1307, USA. */ | |
a641835a RM |
19 | |
20 | #include <alloca.h> | |
2c6fe0bd | 21 | #include <errno.h> |
a641835a RM |
22 | #include <nl_types.h> |
23 | #include <stdlib.h> | |
24 | #include <string.h> | |
25 | #include <unistd.h> | |
26 | #include <sys/mman.h> | |
27 | ||
28 | #include "catgetsinfo.h" | |
29 | ||
30 | ||
31 | /* Open the catalog and return a descriptor for the catalog. */ | |
32 | nl_catd | |
33 | catopen (const char *cat_name, int flag) | |
34 | { | |
35 | __nl_catd result; | |
36 | const char *env_var; | |
c84142e8 | 37 | const char *nlspath; |
a641835a | 38 | |
499e7464 | 39 | result = (__nl_catd) malloc (sizeof (*result)); |
a641835a RM |
40 | if (result == NULL) |
41 | /* We cannot get enough memory. */ | |
42 | return (nl_catd) -1; | |
43 | ||
44 | result->status = closed; | |
45 | ||
a5113b14 | 46 | result->cat_name = __strdup (cat_name); |
a641835a RM |
47 | if (result->cat_name == NULL) |
48 | { | |
49 | free (result); | |
2c6fe0bd | 50 | __set_errno (ENOMEM); |
a641835a RM |
51 | return (nl_catd) -1; |
52 | } | |
53 | ||
54 | if (strchr (cat_name, '/') == NULL) | |
55 | { | |
56 | if (flag == NL_CAT_LOCALE) | |
57 | { | |
58 | env_var = getenv ("LC_ALL"); | |
59 | if (env_var == NULL) | |
60 | { | |
61 | env_var = getenv ("LC_MESSAGES"); | |
62 | if (env_var == NULL) | |
63 | { | |
64 | env_var = getenv ("LANG"); | |
65 | if (env_var == NULL) | |
66 | env_var = "C"; | |
67 | } | |
68 | } | |
69 | } | |
70 | else | |
71 | { | |
72 | env_var = getenv ("LANG"); | |
73 | if (env_var == NULL) | |
74 | env_var = "C"; | |
75 | } | |
76 | ||
a5113b14 | 77 | result->env_var = __strdup (env_var); |
a641835a RM |
78 | if (result->env_var == NULL) |
79 | { | |
80 | free ((void *) result->cat_name); | |
81 | free ((void *) result); | |
2c6fe0bd | 82 | __set_errno (ENOMEM); |
a641835a RM |
83 | return (nl_catd) -1; |
84 | } | |
85 | ||
c84142e8 UD |
86 | nlspath = __secure_getenv ("NLSPATH"); |
87 | result->nlspath = __strdup (nlspath != NULL && *nlspath != '\0' | |
88 | ? nlspath : NLSPATH); | |
a641835a RM |
89 | |
90 | if (result->nlspath == NULL) | |
91 | { | |
92 | free ((void *) result->cat_name); | |
93 | free ((void *) result->env_var); | |
94 | free ((void *) result); | |
2c6fe0bd | 95 | __set_errno (ENOMEM); |
a641835a RM |
96 | return (nl_catd) -1; |
97 | } | |
98 | } | |
99 | else | |
100 | { | |
101 | result->env_var = NULL; | |
102 | result->nlspath = NULL; | |
103 | } | |
104 | ||
105 | return (nl_catd) result; | |
106 | } | |
107 | ||
108 | ||
109 | /* Return message from message catalog. */ | |
110 | char * | |
111 | catgets (nl_catd catalog_desc, int set, int message, const char *string) | |
112 | { | |
113 | __nl_catd catalog; | |
114 | size_t idx; | |
115 | size_t cnt; | |
116 | ||
117 | /* Be generous if catalog which failed to be open is used. */ | |
118 | if (catalog_desc == (nl_catd) -1 || ++set <= 0 || message < 0) | |
119 | return (char *) string; | |
120 | ||
121 | catalog = (__nl_catd) catalog_desc; | |
122 | ||
123 | if (catalog->status == closed) | |
124 | __open_catalog (catalog, 1); | |
125 | ||
126 | if (catalog->status == nonexisting) | |
2c6fe0bd UD |
127 | { |
128 | __set_errno (EBADF); | |
129 | return (char *) string; | |
130 | } | |
a641835a RM |
131 | |
132 | idx = ((set * message) % catalog->plane_size) * 3; | |
133 | cnt = 0; | |
134 | do | |
135 | { | |
136 | if (catalog->name_ptr[idx + 0] == (u_int32_t) set | |
137 | && catalog->name_ptr[idx + 1] == (u_int32_t) message) | |
138 | return (char *) &catalog->strings[catalog->name_ptr[idx + 2]]; | |
139 | ||
140 | idx += catalog->plane_size * 3; | |
141 | } | |
142 | while (++cnt < catalog->plane_depth); | |
143 | ||
2c6fe0bd | 144 | __set_errno (ENOMSG); |
a641835a RM |
145 | return (char *) string; |
146 | } | |
147 | ||
148 | ||
149 | /* Return resources used for loaded message catalog. */ | |
150 | int | |
151 | catclose (nl_catd catalog_desc) | |
152 | { | |
153 | __nl_catd catalog; | |
154 | ||
155 | catalog = (__nl_catd) catalog_desc; | |
156 | ||
6d52618b | 157 | if (catalog->status == mmapped) |
a641835a RM |
158 | munmap ((void *) catalog->file_ptr, catalog->file_size); |
159 | else if (catalog->status == malloced) | |
160 | free ((void *) catalog->file_ptr); | |
161 | else if (catalog->status != closed && catalog->status != nonexisting) | |
2c6fe0bd UD |
162 | { |
163 | __set_errno (EBADF); | |
164 | return -1; | |
165 | } | |
a641835a RM |
166 | |
167 | if (catalog->nlspath) | |
168 | free ((void *) catalog->nlspath); | |
169 | if (catalog->env_var) | |
170 | free ((void *) catalog->env_var); | |
171 | free ((void *) catalog); | |
172 | ||
173 | return 0; | |
174 | } |