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1 office 1 /* language.c
2 * Language "preference" handling routines
3 * Copyright 2014, Michal Labedzki for Tieto Corporation
4 *
5 * Wireshark - Network traffic analyzer
6 * By Gerald Combs <gerald@wireshark.org>
7 * Copyright 1998 Gerald Combs
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version 2
12 * of the License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22 */
23  
24 #include "config.h"
25  
26 #include <stdlib.h>
27 #include <errno.h>
28  
29 #include <epan/prefs.h>
30 #include <epan/prefs-int.h>
31  
32 #include <wsutil/filesystem.h>
33 #include <wsutil/file_util.h>
34  
35 #include "ui/language.h"
36 #include "ui/simple_dialog.h"
37  
38 #define LANGUAGE_FILE_NAME "language"
39 #define LANGUAGE_PREF_LANGUAGE "language"
40  
41 char *language = NULL;
42  
43 /* set one user's recent common file key/value pair */
44 static prefs_set_pref_e
45 read_language_pref(gchar *key, const gchar *value,
46 void *private_data _U_, gboolean return_range_errors _U_)
47 {
48 if (strcmp(key, LANGUAGE_PREF_LANGUAGE) == 0) {
49 if (language)
50 g_free(language);
51 /*
52 * For backwards compatibility, treat "auto" as meaning "use the
53 * system language".
54 *
55 * To handle the old buggy code that didn't check whether "language"
56 * was null before trying to print it, treat "(null)" - which many,
57 * but *NOT* all, system printfs print for a null pointer (some
58 * printfs, such as the one in Solaris, *crash* with %s and a null
59 * pointer) - as meaning "use the system language".
60 */
61 if (!value || !*value || strcmp(value, "auto") == 0 ||
62 strcmp(value, "(null)") == 0)
63 language = g_strdup(USE_SYSTEM_LANGUAGE);
64 else
65 language = g_strdup(value);
66 }
67  
68 return PREFS_SET_OK;
69 }
70  
71 void
72 read_language_prefs(void)
73 {
74 char *rf_path;
75 FILE *rf;
76  
77 rf_path = get_persconffile_path(LANGUAGE_FILE_NAME, FALSE);
78  
79 if ((rf = ws_fopen(rf_path, "r")) != NULL) {
80 read_prefs_file(rf_path, rf, read_language_pref, NULL);
81  
82 fclose(rf);
83 }
84  
85 g_free(rf_path);
86 }
87  
88 gboolean
89 write_language_prefs(void)
90 {
91 char *pf_dir_path;
92 char *rf_path;
93 FILE *rf;
94  
95 /* To do:
96 * - Split output lines longer than MAX_VAL_LEN
97 * - Create a function for the preference directory check/creation
98 * so that duplication can be avoided with filter.c
99 */
100  
101 /* Create the directory that holds personal configuration files, if
102 necessary. */
103 if (create_persconffile_dir(&pf_dir_path) == -1) {
104 simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
105 "Can't create directory\n\"%s\"\nfor language file: %s.", pf_dir_path,
106 g_strerror(errno));
107 g_free(pf_dir_path);
108 return FALSE;
109 }
110  
111 rf_path = get_persconffile_path(LANGUAGE_FILE_NAME, FALSE);
112 if ((rf = ws_fopen(rf_path, "w")) == NULL) {
113 simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
114 "Can't open recent file\n\"%s\": %s.", rf_path,
115 g_strerror(errno));
116 g_free(rf_path);
117 return FALSE;
118 }
119 g_free(rf_path);
120  
121 fputs("# Language settings file for Wireshark " VERSION ".\n"
122 "#\n"
123 "# This file is regenerated each time Wireshark is quit.\n"
124 "# So be careful, if you want to make manual changes here.\n"
125 "\n", rf);
126  
127 fprintf(rf, LANGUAGE_PREF_LANGUAGE ": %s\n", language ? language : USE_SYSTEM_LANGUAGE);
128  
129 fclose(rf);
130  
131 return TRUE;
132 }
133  
134 /*
135 * Editor modelines - http://www.wireshark.org/tools/modelines.html
136 *
137 * Local variables:
138 * c-basic-offset: 4
139 * tab-width: 8
140 * indent-tabs-mode: nil
141 * End:
142 *
143 * vi: set shiftwidth=4 tabstop=8 expandtab:
144 * :indentSize=4:tabSize=8:noTabs=true:
145 */