use boost.locale for charset conversions instead of iconv

configure.in

@@ -15,7 +15,6 @@ AC_ARG_ENABLE(clock, AS_HELP_STRING([--enable-clock], [Enable clock screen @<:@d
 AC_ARG_ENABLE(unicode, AS_HELP_STRING([--enable-unicode], [Enable utf8 support @<:@default=yes@:>@]), [unicode=$enableval], [unicode=yes])
 AC_ARG_WITH(curl, AS_HELP_STRING([--with-curl], [Enable fetching lyrics from the Internet @<:@default=auto@:>@]), [curl=$withval], [curl=auto])
 AC_ARG_WITH(fftw, AS_HELP_STRING([--with-fftw], [Enable fftw support (required for frequency spectrum vizualization) @<:@default=auto@:>@]), [fftw=$withval], [fftw=auto])
-AC_ARG_WITH(iconv, AS_HELP_STRING([--with-iconv], [Enable iconv support (Note: if you use utf-8 system wide, you can disable this) @<:@default=auto@:>@]), [iconv=$withval], [iconv=auto])
 AC_ARG_WITH(pdcurses, AS_HELP_STRING([--with-pdcurses[=LIBNAME]], [Link against pdcurses instead of ncurses @<:@default=XCurses@:>@]), [pdcurses=$withval], [pdcurses=no])
 AC_ARG_WITH(taglib, AS_HELP_STRING([--with-taglib], [Enable tag editor @<:@default=auto@:>@]), [taglib=$withval], [taglib=auto])
 
@@ -27,19 +26,6 @@ if test "$clock" = "yes"; then
 	AC_DEFINE([ENABLE_CLOCK], [1], [enables clock screen])
 fi
 
-dnl =====================================
-dnl = checking for -fno-exceptions flag =
-dnl =====================================
-AC_MSG_CHECKING([whether compiler supports -fno-exceptions])
-old_CXXFLAGS="$CXXFLAGS"
-CXXFLAGS="-fno-exceptions"
-AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ ]])],
-	AC_MSG_RESULT([yes])
-		no_exceptions="-fno-exceptions",
-	AC_MSG_RESULT([no])
-)
-CXXFLAGS="$old_CXXFLAGS $no_exceptions"
-
 dnl ================================
 dnl = checking for -std=c++0x flag =
 dnl ================================
@@ -96,6 +82,22 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[struct A { virtual void foo() { } }; struct
 		AC_DEFINE([OVERRIDE], []),
 )
 
+dnl =============================
+dnl = setting boost environment =
+dnl =============================
+AS_IF([test -z "${BOOST_LIB_SUFFIX+x}"], [BOOST_LIB_SUFFIX=-mt])
+AC_ARG_VAR([BOOST_LIB_SUFFIX], [Boost library name suffix [default=-mt]])
+
+dnl =============================
+dnl = checking for boost.locale =
+dnl =============================
+AC_CHECK_HEADERS([boost/locale/encoding.hpp], ,
+	AC_MSG_ERROR(boost/locale/encoding.hpp is missing)
+)
+AC_CHECK_LIB(boost_locale$BOOST_LIB_SUFFIX, main, LDFLAGS="$LDFLAGS -lboost_locale$BOOST_LIB_SUFFIX",
+	AC_MSG_ERROR([no boost.locale library found])
+)
+
 dnl ==============================
 dnl = checking for regex (win32) =
 dnl ==============================
@@ -132,23 +134,6 @@ AC_CHECK_HEADERS([pthread.h],
 	),
 )
 
-dnl ======================
-dnl = checking for iconv =
-dnl ======================
-if test "$iconv" != "no" ; then
-	AC_CHECK_HEADERS([iconv.h],
-		AC_MSG_CHECKING([whether iconv takes const char **])
-		AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <iconv.h>]], [[iconv(0, (const char **)0, 0, 0, 0);]])],
-			AC_MSG_RESULT([yes]) AC_DEFINE([ICONV_CONST], [const], [pass const pointer to iconv]),
-			AC_MSG_RESULT([no]) AC_DEFINE([ICONV_CONST], [], [pass non-const pointer to iconv]))
-		AC_CHECK_LIB(iconv, libiconv, LDFLAGS="$LDFLAGS -liconv", )
-	,
-	if test "$iconv" = "yes"; then
-		AC_MSG_ERROR([iconv.h header is required])
-	fi
-	)
-fi
-
 dnl ========================
 dnl = checking for ncurses =
 dnl ========================

src/charset.cpp

@@ -18,130 +18,34 @@
  *   51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.              *
  ***************************************************************************/
 
+#include <boost/locale/encoding.hpp>
 #include "charset.h"
-
-#ifdef HAVE_ICONV_H
-
-#include <iconv.h>
-#include <cstdlib>
-#include <cstring>
-#include <fstream>
-#include <iostream>
-#include <stdexcept>
-
 #include "settings.h"
 
-namespace {//
-
-bool is_utf8(const char *s)
-{
-	for (; *s; ++s)
-	{
-		if (*s & 0x80) // 1xxxxxxx
-		{
-			char c = 0x40;
-			unsigned i = 0;
-			while (c & *s)
-				++i, c >>= 1;
-			if (i < 1 || i > 3) // not 110xxxxx, 1110xxxx, 11110xxx
-				return false;
-			for (unsigned j = 0; j < i; ++j)
-				if (!*++s || !(*s & 0x80) || *s & 0x40) // 10xxxxxx
-					return false;
-		}
-	}
-	return true;
-}
+namespace Charset {//
 
-bool has_non_ascii_chars(const char *s)
+std::string toUtf8From(std::string s, const char *charset)
 {
-	for (; *s; ++s)
-		if (*s & 0x80)
-			return true;
-	return false;
+	return boost::locale::conv::to_utf<char>(s, charset);
 }
 
-void charset_convert(const char *from, const char *to, const char *&inbuf,
-                     bool delete_old, size_t len = 0)
+std::string fromUtf8To(std::string s, const char *charset)
 {
-	assert(inbuf);
-	assert(from);
-	assert(to);
-	
-	iconv_t cd = iconv_open(to, from);
-	if (cd == iconv_t(-1))
-	{
-		std::cerr << "Error while executing iconv_open: " << strerror(errno) << "\n";
-		return;
-	}
-	
-	if (!len)
-		len = strlen(inbuf);
-	size_t buflen = len*MB_CUR_MAX+1;
-	char *outbuf = static_cast<char *>(malloc(buflen));
-	char *outstart = outbuf;
-	const char *instart = inbuf;
-	
-	if (iconv(cd, const_cast<ICONV_CONST char **>(&inbuf), &len, &outbuf, &buflen) == size_t(-1))
-	{
-		std::cerr << "Error while executing iconv: " << strerror(errno) << "\n";
-		inbuf = instart;
-		delete [] outstart;
-	}
-	else
-	{
-		*outbuf = 0;
-		if (delete_old)
-			free(const_cast<char *>(instart));
-		inbuf = outstart;
-	}
-	iconv_close(cd);
-}
-
-}
-
-namespace IConv {//
-
-void convertFromTo(const char *from, const char *to, std::string &s)
-{
-	const char *tmp = strdup(s.c_str());
-	charset_convert(from, to, tmp, true, s.length());
-	s = tmp;
-	free(const_cast<char *>(tmp));
+	return boost::locale::conv::to_utf<char>(s, charset);
 }
 
 std::string utf8ToLocale(std::string s)
 {
-	utf8ToLocale_(s);
-	return s;
-}
-
-void utf8ToLocale_(std::string &s)
-{
-	if (Config.system_encoding.empty() || !has_non_ascii_chars(s.c_str()))
-		return;
-	const char *tmp = strdup(s.c_str());
-	charset_convert("utf-8", Config.system_encoding.c_str(), tmp, 1, s.length());
-	s = tmp;
-	free(const_cast<char *>(tmp));
+	return Config.system_encoding.empty()
+	? s
+	: boost::locale::conv::from_utf<char>(s, Config.system_encoding);
 }
 
 std::string localeToUtf8(std::string s)
 {
-	localeToUtf8_(s);
-	return s;
-}
-
-void localeToUtf8_(std::string &s)
-{
-	if (Config.system_encoding.empty() || !has_non_ascii_chars(s.c_str()) || is_utf8(s.c_str()))
-		return;
-	const char *tmp = strdup(s.c_str());
-	charset_convert(Config.system_encoding.c_str(), "utf-8", tmp, 1, s.length());
-	s = tmp;
-	free(const_cast<char *>(tmp));
+	return Config.system_encoding.empty()
+	? s
+	: boost::locale::conv::to_utf<char>(s, Config.system_encoding);
 }
 
 }
-
-#endif // HAVE_ICONV_H

src/charset.h

@@ -21,34 +21,16 @@
 #ifndef NCMPCPP_CHARSET_H
 #define NCMPCPP_CHARSET_H
 
-#include "config.h"
 #include <string>
 
-namespace IConv {//
+namespace Charset {//
 
-#ifdef HAVE_ICONV_H
-
-void convertFromTo(const char *from, const char *to, std::string &s);
+std::string toUtf8From(std::string s, const char *charset);
+std::string fromUtf8To(std::string s, const char *charset);
 
 std::string utf8ToLocale(std::string s);
 std::string localeToUtf8(std::string s);
 
-void utf8ToLocale_(std::string &s);
-void localeToUtf8_(std::string &s);
-
-#else
-
-inline void convertFromTo(const char *, const char *, std::string &) { }
-
-inline std::string utf8ToLocale(std::string s) { return s; }
-inline std::string localeToUtf8(std::string s) { return s; }
-
-inline void utf8ToLocale_(std::string &) { }
-inline void localeToUtf8_(std::string &) { }
-
-#endif // HAVE_ICONV_H
-
 }
 
 #endif // NCMPCPP_CHARSET_H
-

src/cmdargs.cpp

@@ -89,9 +89,6 @@ void ParseArgv(int argc, char **argv)
 #			ifdef HAVE_CURL_CURL_H
 			<< " curl"
 #			endif
-#			ifdef HAVE_ICONV_H
-			<< " iconv"
-#			endif
 #			ifdef HAVE_FFTW3_H
 			<< " fftw"
 #			endif
@@ -188,7 +185,7 @@ void ParseArgv(int argc, char **argv)
 						replace(now_playing_format, "\\t", "\t");
 					}
 				}
-				std::cout << IConv::utf8ToLocale(
+				std::cout << Charset::utf8ToLocale(
 					Mpd.GetCurrentlyPlayingSong().toString(now_playing_format, Config.tags_separator)) << "\n";
 			}
 			exit(0);

src/lastfm.cpp

@@ -127,12 +127,11 @@ void Lastfm::Load()
 	{
 		bool first = 1;
 		std::string line;
-		while (getline(input, line))
+		while (std::getline(input, line))
 		{
 			if (!first)
 				w << '\n';
-			IConv::utf8ToLocale_(line);
-			w << line;
+			w << Charset::utf8ToLocale(line);
 			first = 0;
 		}
 		input.close();
@@ -171,8 +170,7 @@ void Lastfm::Download()
 	{
 		Save(result.second);
 		w.clear();
-		IConv::utf8ToLocale_(result.second);
-		w << result.second;
+		w << Charset::utf8ToLocale(result.second);
 		itsService->colorizeOutput(w);
 	}
 	else

src/lyrics.cpp

@@ -249,8 +249,7 @@ void *Lyrics::Download()
 	{
 		Save(itsFilename, result.second);
 		w.clear();
-		IConv::utf8ToLocale_(result.second);
-		w << result.second;
+		w << Charset::utf8ToLocale(result.second);
 	}
 	else
 		w << '\n' << L"Lyrics weren't found.";
@@ -320,12 +319,11 @@ void Lyrics::Load()
 	{
 		bool first = 1;
 		std::string line;
-		while (getline(input, line))
+		while (std::getline(input, line))
 		{
 			if (!first)
 				w << '\n';
-			IConv::utf8ToLocale_(line);
-			w << line;
+			w << Charset::utf8ToLocale(line);
 			first = 0;
 		}
 		w.flush();

src/lyrics_fetcher.cpp

@@ -212,7 +212,7 @@ void LyricstimeFetcher::postProcess(std::string &data)
 {
 	// lyricstime.com uses iso-8859-1 as the encoding
 	// so we need to convert obtained lyrics to utf-8
-	IConv::convertFromTo("iso-8859-1", "utf-8", data);
+	data = Charset::toUtf8From(data, "iso-8859-1");
 	LyricsFetcher::postProcess(data);
 }
 
@@ -245,7 +245,7 @@ void LyricsmaniaFetcher::postProcess(std::string &data)
 {
 	// lyricsmania.com uses iso-8859-1 as the encoding
 	// so we need to convert obtained lyrics to utf-8
-	IConv::convertFromTo("iso-8859-1", "utf-8", data);
+	data = Charset::toUtf8From(data, "iso-8859-1");
 	LyricsFetcher::postProcess(data);
 }
 

src/media_library.cpp

@@ -314,6 +314,7 @@ void MediaLibrary::update()
 				}
 				if (idx < Tags.size())
 					Tags.resizeList(idx);
+				std::sort(Tags.beginV(), Tags.endV(), SortPrimaryTags());
 			});
 			Tags.refresh();
 		}

src/ncmpcpp.cpp

@@ -89,8 +89,8 @@ int main(int argc, char **argv)
 	using Global::VolumeState;
 	using Global::Timer;
 	
-	srand(time(0));
-	setlocale(LC_ALL, "");
+	std::srand(std::time(0));
+	std::setlocale(LC_ALL, "");
 	std::locale::global(std::locale(""));
 	
 	Config.CheckForCommandLineConfigFilePath(argv, argc);

src/status.cpp

@@ -330,8 +330,8 @@ void Status::Changes::elapsedTime()
 		}
 		
 		NC::WBuffer first, second;
-		stringToBuffer(ToWString(IConv::utf8ToLocale(np.toString(Config.new_header_first_line, Config.tags_separator, "$"))), first);
-		stringToBuffer(ToWString(IConv::utf8ToLocale(np.toString(Config.new_header_second_line, Config.tags_separator, "$"))), second);
+		stringToBuffer(ToWString(Charset::utf8ToLocale(np.toString(Config.new_header_first_line, Config.tags_separator, "$"))), first);
+		stringToBuffer(ToWString(Charset::utf8ToLocale(np.toString(Config.new_header_second_line, Config.tags_separator, "$"))), second);
 		
 		size_t first_len = wideLength(first.str());
 		size_t first_margin = (std::max(tracklength.length()+1, VolumeState.length()))*2;
@@ -382,7 +382,7 @@ void Status::Changes::elapsedTime()
 			tracklength += "]";
 		}
 		NC::WBuffer np_song;
-		stringToBuffer(ToWString(IConv::utf8ToLocale(np.toString(Config.song_status_format, Config.tags_separator, "$"))), np_song);
+		stringToBuffer(ToWString(Charset::utf8ToLocale(np.toString(Config.song_status_format, Config.tags_separator, "$"))), np_song);
 		*wFooter << NC::XY(0, 1) << wclrtoeol << NC::fmtBold << player_state << NC::fmtBoldEnd;
 		np_song.write(*wFooter, playing_song_scroll_begin, wFooter->getWidth()-player_state.length()-tracklength.length(), L" ** ");
 		*wFooter << NC::fmtBold << NC::XY(wFooter->getWidth()-tracklength.length(), 1) << tracklength << NC::fmtBoldEnd;

src/utility/wide_string.cpp

@@ -18,31 +18,17 @@
  *   51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.              *
  ***************************************************************************/
 
+#include <boost/locale/encoding.hpp>
 #include "utility/wide_string.h"
 
-std::string ToString(const std::wstring &ws)
+std::string ToString(std::wstring ws)
 {
-	std::string result;
-	char s[MB_CUR_MAX];
-	for (size_t i = 0; i < ws.length(); ++i)
-	{
-		int n = wcrtomb(s, ws[i], 0);
-		if (n > 0)
-			result.append(s, n);
-	}
-	return result;
+	return boost::locale::conv::utf_to_utf<char>(ws);
 }
 
-std::wstring ToWString(const std::string &s)
+std::wstring ToWString(std::string s)
 {
-	std::wstring result;
-	wchar_t *ws = new wchar_t[s.length()];
-	const char *c_s = s.c_str();
-	int n = mbsrtowcs(ws, &c_s, s.length(), 0);
-	if (n > 0)
-		result.append(ws, n);
-	delete [] ws;
-	return result;
+	return boost::locale::conv::utf_to_utf<wchar_t>(s);
 }
 
 size_t wideLength(const std::wstring &ws)

src/utility/wide_string.h

@@ -23,8 +23,8 @@
 
 #include <string>
 
-std::string ToString(const std::wstring &ws);
-std::wstring ToWString(const std::string &s);
+std::string ToString(std::wstring ws);
+std::wstring ToWString(std::string s);
 
 size_t wideLength(const std::wstring &ws);