Initial commit

src/gettext.h

@@ -0,0 +1,107 @@
+/*
+Minetest
+Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#pragma once
+
+#include "config.h" // for USE_GETTEXT
+#include <string>
+#include "porting.h"
+
+#if USE_GETTEXT
+	#include <libintl.h>
+#else
+	// In certain environments, some standard headers like <iomanip>
+	// and <locale> include libintl.h. If libintl.h is included after
+	// we define our gettext macro below, this causes a syntax error
+	// at the declaration of the gettext function in libintl.h.
+	// Fix this by including such a header before defining the macro.
+	// See issue #4446.
+	// Note that we can't include libintl.h directly since we're in
+	// the USE_GETTEXT=0 case and can't assume that gettext is installed.
+	#include <locale>
+
+	#define gettext(String) String
+#endif
+
+#define _(String) gettext(String)
+#define gettext_noop(String) (String)
+#define N_(String) gettext_noop((String))
+
+void init_gettext(const char *path, const std::string &configured_language,
+	int argc, char *argv[]);
+
+extern wchar_t *utf8_to_wide_c(const char *str);
+
+// The returned string must be freed using delete[]
+inline const wchar_t *wgettext(const char *str)
+{
+	// We must check here that is not an empty string to avoid trying to translate it
+	return str[0] ? utf8_to_wide_c(gettext(str)) : utf8_to_wide_c("");
+}
+
+inline std::string strgettext(const std::string &text)
+{
+	return text.empty() ? "" : gettext(text.c_str());
+}
+
+/**
+ * Returns translated string with format args applied
+ *
+ * @tparam Args Template parameter for format args
+ * @param src Translation source string
+ * @param args Variable format args
+ * @return translated string
+ */
+template <typename ...Args>
+inline std::wstring fwgettext(const char *src, Args&&... args)
+{
+	wchar_t buf[255];
+	const wchar_t* str = wgettext(src);
+	swprintf(buf, sizeof(buf) / sizeof(wchar_t), str, std::forward<Args>(args)...);
+	delete[] str;
+	return std::wstring(buf);
+}
+
+/**
+ * Returns translated string with format args applied
+ *
+ * @tparam Args Template parameter for format args
+ * @param format Translation source string
+ * @param args Variable format args
+ * @return translated string.
+ */
+template <typename ...Args>
+inline std::string fmtgettext(const char *format, Args&&... args)
+{
+	std::string buf;
+	std::size_t buf_size = 256;
+	buf.resize(buf_size);
+
+	format = gettext(format);
+
+	int len = porting::mt_snprintf(&buf[0], buf_size, format, std::forward<Args>(args)...);
+	if (len <= 0) throw std::runtime_error("gettext format error: " + std::string(format));
+	if ((size_t)len >= buf.size()) {
+		buf.resize(len+1); // extra null byte
+		porting::mt_snprintf(&buf[0], buf.size(), format, std::forward<Args>(args)...);
+	}
+	buf.resize(len); // remove null bytes
+
+	return buf;
+}