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30955229 JN |
1 | /* |
2 | * Copyright (c) 2010 Ævar Arnfjörð Bjarmason | |
3 | */ | |
4 | ||
98750588 | 5 | #include "git-compat-util.h" |
0b027f6c | 6 | #include "abspath.h" |
32a8f510 | 7 | #include "environment.h" |
92034a9c | 8 | #include "exec-cmd.h" |
30955229 | 9 | #include "gettext.h" |
754395d3 NTND |
10 | #include "strbuf.h" |
11 | #include "utf8.h" | |
6cdccfce | 12 | #include "config.h" |
30955229 | 13 | |
5e9637c6 | 14 | #ifndef NO_GETTEXT |
5e9637c6 | 15 | # include <libintl.h> |
090d1e84 KB |
16 | # ifdef GIT_WINDOWS_NATIVE |
17 | ||
18 | static const char *locale_charset(void) | |
19 | { | |
20 | const char *env = getenv("LC_ALL"), *dot; | |
21 | ||
22 | if (!env || !*env) | |
23 | env = getenv("LC_CTYPE"); | |
24 | if (!env || !*env) | |
25 | env = getenv("LANG"); | |
26 | ||
27 | if (!env) | |
28 | return "UTF-8"; | |
29 | ||
30 | dot = strchr(env, '.'); | |
31 | return !dot ? env : dot + 1; | |
32 | } | |
33 | ||
34 | # elif defined HAVE_LIBCHARSET_H | |
5e9637c6 ÆAB |
35 | # include <libcharset.h> |
36 | # else | |
37 | # include <langinfo.h> | |
38 | # define locale_charset() nl_langinfo(CODESET) | |
39 | # endif | |
40 | #endif | |
41 | ||
e8c16726 NTND |
42 | static const char *charset; |
43 | ||
93f7d910 JK |
44 | /* |
45 | * Guess the user's preferred languages from the value in LANGUAGE environment | |
46 | * variable and LC_MESSAGES locale category if NO_GETTEXT is not defined. | |
47 | * | |
48 | * The result can be a colon-separated list like "ko:ja:en". | |
49 | */ | |
50 | const char *get_preferred_languages(void) | |
51 | { | |
52 | const char *retval; | |
53 | ||
54 | retval = getenv("LANGUAGE"); | |
55 | if (retval && *retval) | |
56 | return retval; | |
57 | ||
58 | #ifndef NO_GETTEXT | |
59 | retval = setlocale(LC_MESSAGES, NULL); | |
60 | if (retval && *retval && | |
61 | strcmp(retval, "C") && | |
62 | strcmp(retval, "POSIX")) | |
63 | return retval; | |
64 | #endif | |
65 | ||
66 | return NULL; | |
67 | } | |
68 | ||
5e9637c6 | 69 | #ifndef NO_GETTEXT |
48ca53ca | 70 | __attribute__((format (printf, 1, 2))) |
9c0495d2 NTND |
71 | static int test_vsnprintf(const char *fmt, ...) |
72 | { | |
73 | char buf[26]; | |
74 | int ret; | |
75 | va_list ap; | |
76 | va_start(ap, fmt); | |
77 | ret = vsnprintf(buf, sizeof(buf), fmt, ap); | |
78 | va_end(ap); | |
79 | return ret; | |
80 | } | |
81 | ||
5e9637c6 ÆAB |
82 | static void init_gettext_charset(const char *domain) |
83 | { | |
5e9637c6 ÆAB |
84 | charset = locale_charset(); |
85 | bind_textdomain_codeset(domain, charset); | |
9371c0e9 ÆAB |
86 | |
87 | /* | |
88 | * Work around an old bug fixed in glibc 2.17 (released on | |
89 | * 2012-12-24), at the cost of potentially making translated | |
90 | * messages from external functions like perror() emitted in | |
91 | * the wrong encoding. | |
92 | * | |
93 | * The bug affected e.g. git.git's own 7eb93c89651 ([PATCH] | |
94 | * Simplify git script, 2005-09-07), which is the origin of | |
95 | * the "David_K\345gedal" test string. | |
96 | * | |
97 | * See a much longer comment added to this file in 5e9637c6297 | |
98 | * (i18n: add infrastructure for translating Git with gettext, | |
99 | * 2011-11-18) for more details. | |
100 | */ | |
9c0495d2 NTND |
101 | if (test_vsnprintf("%.*s", 13, "David_K\345gedal") < 0) |
102 | setlocale(LC_CTYPE, "C"); | |
5e9637c6 ÆAB |
103 | } |
104 | ||
105 | void git_setup_gettext(void) | |
106 | { | |
226c0ddd | 107 | const char *podir = getenv(GIT_TEXT_DOMAIN_DIR_ENVIRONMENT); |
0210231b | 108 | char *p = NULL; |
5e9637c6 ÆAB |
109 | |
110 | if (!podir) | |
0210231b | 111 | podir = p = system_path(GIT_LOCALE_PATH); |
226c0ddd | 112 | |
0210231b JS |
113 | if (!is_directory(podir)) { |
114 | free(p); | |
cc5e1bf9 | 115 | return; |
0210231b | 116 | } |
226c0ddd | 117 | |
5e9637c6 ÆAB |
118 | bindtextdomain("git", podir); |
119 | setlocale(LC_MESSAGES, ""); | |
aa1462cc | 120 | setlocale(LC_TIME, ""); |
5e9637c6 ÆAB |
121 | init_gettext_charset("git"); |
122 | textdomain("git"); | |
0210231b JS |
123 | |
124 | free(p); | |
5e9637c6 | 125 | } |
754395d3 NTND |
126 | |
127 | /* return the number of columns of string 's' in current locale */ | |
128 | int gettext_width(const char *s) | |
129 | { | |
130 | static int is_utf8 = -1; | |
131 | if (is_utf8 == -1) | |
e8c16726 | 132 | is_utf8 = is_utf8_locale(); |
754395d3 NTND |
133 | |
134 | return is_utf8 ? utf8_strwidth(s) : strlen(s); | |
135 | } | |
5e9637c6 | 136 | #endif |
e8c16726 NTND |
137 | |
138 | int is_utf8_locale(void) | |
139 | { | |
140 | #ifdef NO_GETTEXT | |
141 | if (!charset) { | |
142 | const char *env = getenv("LC_ALL"); | |
143 | if (!env || !*env) | |
144 | env = getenv("LC_CTYPE"); | |
145 | if (!env || !*env) | |
146 | env = getenv("LANG"); | |
147 | if (!env) | |
148 | env = ""; | |
149 | if (strchr(env, '.')) | |
150 | env = strchr(env, '.') + 1; | |
151 | charset = xstrdup(env); | |
152 | } | |
153 | #endif | |
154 | return is_encoding_utf8(charset); | |
155 | } |