Git 2.31-rc0
[thirdparty/git.git] / gettext.h
1 /*
2 * Copyright (c) 2010-2011 Ævar Arnfjörð Bjarmason
3 *
4 * This is a skeleton no-op implementation of gettext for Git.
5 * You can replace it with something that uses libintl.h and wraps
6 * gettext() to try out the translations.
7 */
8
9 #ifndef GETTEXT_H
10 #define GETTEXT_H
11
12 #if defined(_) || defined(Q_)
13 #error "namespace conflict: '_' or 'Q_' is pre-defined?"
14 #endif
15
16 #ifndef NO_GETTEXT
17 # include <libintl.h>
18 #else
19 # ifdef gettext
20 # undef gettext
21 # endif
22 # define gettext(s) (s)
23 # ifdef ngettext
24 # undef ngettext
25 # endif
26 # define ngettext(s, p, n) ((n == 1) ? (s) : (p))
27 #endif
28
29 #define FORMAT_PRESERVING(n) __attribute__((format_arg(n)))
30
31 #ifndef NO_GETTEXT
32 void git_setup_gettext(void);
33 int gettext_width(const char *s);
34 #else
35 static inline void git_setup_gettext(void)
36 {
37 }
38 static inline int gettext_width(const char *s)
39 {
40 return strlen(s);
41 }
42 #endif
43
44 static inline FORMAT_PRESERVING(1) const char *_(const char *msgid)
45 {
46 if (!*msgid)
47 return "";
48 return gettext(msgid);
49 }
50
51 static inline FORMAT_PRESERVING(1) FORMAT_PRESERVING(2)
52 const char *Q_(const char *msgid, const char *plu, unsigned long n)
53 {
54 return ngettext(msgid, plu, n);
55 }
56
57 /* Mark msgid for translation but do not translate it. */
58 #if !USE_PARENS_AROUND_GETTEXT_N
59 #define N_(msgid) msgid
60 #else
61 /*
62 * Strictly speaking, this will lead to invalid C when
63 * used this way:
64 * static const char s[] = N_("FOO");
65 * which will expand to
66 * static const char s[] = ("FOO");
67 * and in valid C, the initializer on the right hand side must
68 * be without the parentheses. But many compilers do accept it
69 * as a language extension and it will allow us to catch mistakes
70 * like:
71 * static const char *msgs[] = {
72 * N_("one")
73 * N_("two"),
74 * N_("three"),
75 * NULL
76 * };
77 * (notice the missing comma on one of the lines) by forcing
78 * a compilation error, because parenthesised ("one") ("two")
79 * will not get silently turned into ("onetwo").
80 */
81 #define N_(msgid) (msgid)
82 #endif
83
84 const char *get_preferred_languages(void);
85 int is_utf8_locale(void);
86
87 #endif