diff options
Diffstat (limited to 'src/lib/icu')
| -rw-r--r-- | src/lib/icu/Converter.cxx | 80 | ||||
| -rw-r--r-- | src/lib/icu/Converter.hxx | 72 |
2 files changed, 152 insertions, 0 deletions
diff --git a/src/lib/icu/Converter.cxx b/src/lib/icu/Converter.cxx new file mode 100644 index 000000000..7378f8636 --- /dev/null +++ b/src/lib/icu/Converter.cxx @@ -0,0 +1,80 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 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 General Public License for more details. + * + * You should have received a copy of the GNU 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. + */ + +#include "config.h" +#include "Converter.hxx" +#include "util/Error.hxx" +#include "util/Domain.hxx" + +#include <string.h> + +#ifdef HAVE_GLIB +static constexpr Domain g_iconv_domain("g_iconv"); +#endif + +#ifdef HAVE_ICU_CONVERTER + +IcuConverter * +IcuConverter::Create(const char *charset, Error &error) +{ + GIConv to = g_iconv_open("utf-8", charset); + GIConv from = g_iconv_open(charset, "utf-8"); + if (to == (GIConv)-1 || from == (GIConv)-1) { + if (to != (GIConv)-1) + g_iconv_close(to); + if (from != (GIConv)-1) + g_iconv_close(from); + error.Format(g_iconv_domain, + "Failed to initialize charset '%s'", charset); + return nullptr; + } + + return new IcuConverter(to, from); +} + +static std::string +DoConvert(GIConv conv, const char *src) +{ + char buffer[4096]; + char *in = const_cast<char *>(src); + char *out = buffer; + size_t in_left = strlen(src); + size_t out_left = sizeof(buffer); + + size_t n = g_iconv(conv, &in, &in_left, &out, &out_left); + + if (n == static_cast<size_t>(-1) || in_left > 0) + return std::string(); + + return std::string(buffer, sizeof(buffer) - out_left); +} + +std::string +IcuConverter::ToUTF8(const char *s) const +{ + return DoConvert(to_utf8, s); +} + +std::string +IcuConverter::FromUTF8(const char *s) const +{ + return DoConvert(from_utf8, s); +} + +#endif diff --git a/src/lib/icu/Converter.hxx b/src/lib/icu/Converter.hxx new file mode 100644 index 000000000..f20dc6f7c --- /dev/null +++ b/src/lib/icu/Converter.hxx @@ -0,0 +1,72 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 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 General Public License for more details. + * + * You should have received a copy of the GNU 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. + */ + +#ifndef MPD_ICU_CONVERTER_HXX +#define MPD_ICU_CONVERTER_HXX + +#include "check.h" +#include "Compiler.h" + +#ifdef HAVE_GLIB +#include <glib.h> +#define HAVE_ICU_CONVERTER +#endif + +#ifdef HAVE_ICU_CONVERTER + +#include <string> + +class Error; + +/** + * This class can convert strings with a certain character set to and + * from UTF-8. + */ +class IcuConverter { + const GIConv to_utf8, from_utf8; + + IcuConverter(GIConv _to, GIConv _from) + :to_utf8(_to), from_utf8(_from) {} + +public: + ~IcuConverter() { + g_iconv_close(to_utf8); + g_iconv_close(from_utf8); + } + + static IcuConverter *Create(const char *charset, Error &error); + + /** + * Convert the string to UTF-8. + * Returns empty string on error. + */ + gcc_pure gcc_nonnull_all + std::string ToUTF8(const char *s) const; + + /** + * Convert the string from UTF-8. + * Returns empty string on error. + */ + gcc_pure gcc_nonnull_all + std::string FromUTF8(const char *s) const; +}; + +#endif + +#endif |