3 Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 of the License, or
8 (at your option) any later version.
10 This program 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
13 GNU Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22 #include "config.h" // for USE_GETTEXT
29 // In certain environments, some standard headers like <iomanip>
30 // and <locale> include libintl.h. If libintl.h is included after
31 // we define our gettext macro below, this causes a syntax error
32 // at the declaration of the gettext function in libintl.h.
33 // Fix this by including such a header before defining the macro.
35 // Note that we can't include libintl.h directly since we're in
36 // the USE_GETTEXT=0 case and can't assume that gettext is installed.
39 #define gettext(String) String
42 #define _(String) gettext(String)
43 #define gettext_noop(String) (String)
44 #define N_(String) gettext_noop((String))
46 void init_gettext(const char *path, const std::string &configured_language,
47 int argc, char *argv[]);
49 extern wchar_t *utf8_to_wide_c(const char *str);
51 // The returned string must be freed using delete[]
52 inline const wchar_t *wgettext(const char *str)
54 // We must check here that is not an empty string to avoid trying to translate it
55 return str[0] ? utf8_to_wide_c(gettext(str)) : utf8_to_wide_c("");
58 inline std::string strgettext(const std::string &text)
60 return text.empty() ? "" : gettext(text.c_str());
64 * Returns translated string with format args applied
66 * @tparam Args Template parameter for format args
67 * @param src Translation source string
68 * @param args Variable format args
69 * @return translated string
71 template <typename ...Args>
72 inline std::wstring fwgettext(const char *src, Args&&... args)
75 const wchar_t* str = wgettext(src);
76 swprintf(buf, sizeof(buf) / sizeof(wchar_t), str, std::forward<Args>(args)...);
78 return std::wstring(buf);
82 * Returns translated string with format args applied
84 * @tparam Args Template parameter for format args
85 * @param format Translation source string
86 * @param args Variable format args
87 * @return translated string.
89 template <typename ...Args>
90 inline std::string fmtgettext(const char *format, Args&&... args)
93 std::size_t buf_size = 256;
96 format = gettext(format);
98 int len = porting::mt_snprintf(&buf[0], buf_size, format, std::forward<Args>(args)...);
99 if (len <= 0) throw std::runtime_error("gettext format error: " + std::string(format));
100 if ((size_t)len >= buf.size()) {
101 buf.resize(len+1); // extra null byte
102 porting::mt_snprintf(&buf[0], buf.size(), format, std::forward<Args>(args)...);
104 buf.resize(len); // remove null bytes