restrict conversions being done in strbuffer

src/help.cpp

@@ -94,23 +94,25 @@ std::string Help::DisplayKeys(const ActionType at)
 
 void Help::Section(const char *type, const char *title)
 {
-	*w << "\n  " << fmtBold << type << " - " << title << fmtBoldEnd << "\n\n";
+	*w << U("\n  ") << fmtBold << TO_WSTRING(type) << U(" - ");
+	*w << TO_WSTRING(title) << fmtBoldEnd << '\n' << '\n';
 }
 
 void Help::KeyDesc(const ActionType at, const char *desc)
 {
-	*w << "    " << DisplayKeys(at) << " : " << desc << "\n";
+	*w << U("    ") << DisplayKeys(at) << U(" : ") << TO_WSTRING(desc) << '\n';
 }
 
 void Help::MouseDesc(std::string action, const char *desc, bool indent)
 {
 	action.resize(31 - (indent ? 2 : 0), ' ');
-	*w << "    " << (indent ? "  " : "") << action << ": " << desc << "\n";
+	*w << U("    ") << (indent ? U("  ") : U("")) << TO_WSTRING(action);
+	*w << U(": ") << TO_WSTRING(desc) << '\n';
 }
 
 void Help::MouseColumn(const char *column)
 {
-	*w << fmtBold << "    " << column << " column:\n" << fmtBoldEnd;
+	*w << fmtBold << U("    ") << TO_WSTRING(column) << U(" column:\n") << fmtBoldEnd;
 }
 
 void Help::GetKeybindings()
@@ -126,7 +128,7 @@ void Help::GetKeybindings()
 	KeyDesc(aPageDown, "Page down");
 	KeyDesc(aMoveHome, "Home");
 	KeyDesc(aMoveEnd, "End");
-	*w << "\n";
+	*w << '\n';
 	if (Config.screen_switcher_previous)
 	{
 		KeyDesc(aNextScreen, "Switch between current and last screen");
@@ -155,7 +157,7 @@ void Help::GetKeybindings()
 #	ifdef ENABLE_CLOCK
 	KeyDesc(aShowClock, "Show clock");
 #	endif // ENABLE_CLOCK
-	*w << "\n";
+	*w << '\n';
 	KeyDesc(aShowServerInfo, "Show server info");
 	
 	KeysSection("Global");
@@ -168,7 +170,7 @@ void Help::GetKeybindings()
 	KeyDesc(aSeekBackward, "Seek backward in playing song");
 	KeyDesc(aVolumeDown, "Decrease volume by 2%");
 	KeyDesc(aVolumeUp, "Increase volume by 2%");
-	*w << "\n";
+	*w << '\n';
 	KeyDesc(aToggleSpaceMode, "Toggle space mode (select/add)");
 	KeyDesc(aToggleAddMode, "Toggle add mode (add or remove/always add)");
 	KeyDesc(aToggleMouse, "Toggle mouse support");
@@ -177,7 +179,7 @@ void Help::GetKeybindings()
 	KeyDesc(aSelectAlbum, "Select songs of album around the cursor");
 	KeyDesc(aAddSelectedItems, "Add selected items to playlist");
 	KeyDesc(aAddRandomItems, "Add random items to playlist");
-	*w << "\n";
+	*w << '\n';
 	KeyDesc(aToggleRepeat, "Toggle repeat mode");
 	KeyDesc(aToggleRandom, "Toggle random mode");
 	KeyDesc(aToggleSingle, "Toggle single mode");
@@ -188,7 +190,7 @@ void Help::GetKeybindings()
 	KeyDesc(aToggleCrossfade, "Toggle crossfade mode");
 	KeyDesc(aSetCrossfade, "Set crossfade");
 	KeyDesc(aUpdateDatabase, "Start music database update");
-	*w << "\n";
+	*w << '\n';
 	KeyDesc(aApplyFilter, "Apply filter");
 	KeyDesc(aDisableFilter, "Disable filter");
 	KeyDesc(aFindItemForward, "Find item forward");
@@ -215,7 +217,7 @@ void Help::GetKeybindings()
 	KeyDesc(aToggleFetchingLyricsInBackground, "Toggle fetching lyrics for playing songs in background");
 #	endif // HAVE_CURL_CURL_H
 	KeyDesc(aShowLyrics, "Show/hide song lyrics");
-	*w << "\n";
+	*w << '\n';
 	KeyDesc(aQuit, "Quit");
 	
 	KeysSection("Playlist");
@@ -324,7 +326,7 @@ void Help::GetKeybindings()
 	MouseSection("Global");
 	MouseDesc("Left click on \"Playing/Paused\"", "Play/pause");
 	MouseDesc("Left click on progressbar", "Jump to pointed position in playing song");
-	*w << "\n";
+	*w << '\n';
 	MouseDesc("Mouse wheel on \"Volume: xx\"", "Play/pause");
 	MouseDesc("Mouse wheel on main window", "Scroll");
 	
@@ -335,7 +337,7 @@ void Help::GetKeybindings()
 	MouseSection("Browser");
 	MouseDesc("Left click on directory", "Enter pointed directory");
 	MouseDesc("Right click on directory", "Add pointed directory to playlist");
-	*w << "\n";
+	*w << '\n';
 	MouseDesc("Left click on song/playlist", "Add pointed item to playlist");
 	MouseDesc("Right click on song/playlist", "Add pointed item to playlist and play it");
 	
@@ -347,7 +349,7 @@ void Help::GetKeybindings()
 	MouseColumn("Left/middle");
 	MouseDesc("Left click", "Select pointed item", true);
 	MouseDesc("Right click", "Add item to playlist", true);
-	*w << "\n";
+	*w << '\n';
 	MouseColumn("Right");
 	MouseDesc("Left Click", "Add pointed item to playlist", true);
 	MouseDesc("Right Click", "Add pointed item to playlist and play it", true);
@@ -356,7 +358,7 @@ void Help::GetKeybindings()
 	MouseColumn("Left");
 	MouseDesc("Left click", "Select pointed item", true);
 	MouseDesc("Right click", "Add item to playlist", true);
-	*w << "\n";
+	*w << '\n';
 	MouseColumn("Right");
 	MouseDesc("Left click", "Add pointed item to playlist", true);
 	MouseDesc("Right click", "Add pointed item to playlist and play it", true);
@@ -370,11 +372,11 @@ void Help::GetKeybindings()
 	MouseColumn("Left");
 	MouseDesc("Left click", "Enter pointed directory/select pointed album", true);
 	MouseDesc("Right click", "Toggle view (directories/albums)", true);
-	*w << "\n";
+	*w << '\n';
 	MouseColumn("Middle");
 	MouseDesc("Left click", "Select option", true);
 	MouseDesc("Right click", "Set value/execute", true);
-	*w << "\n";
+	*w << '\n';
 	MouseColumn("Right");
 	MouseDesc("Left click", "Select pointed item", true);
 	MouseDesc("Right click", "Set value", true);

src/helpers.h

@@ -73,8 +73,19 @@ template <typename A, typename B> std::string StringPairToString(const std::pair
 	return pair.first;
 }
 
+template <typename T> struct StringConverter {
+	const char *operator()(const char *s) { return s; }
+};
+template <> struct StringConverter< basic_buffer<wchar_t> > {
+	std::wstring operator()(const char *s) { return ToWString(s); }
+};
+template <> struct StringConverter<Scrollpad> {
+	std::basic_string<my_char_t> operator()(const char *s) { return TO_WSTRING(s); }
+};
+
 template <typename C> void String2Buffer(const std::basic_string<C> &s, basic_buffer<C> &buf)
 {
+	StringConverter< basic_buffer<C> > cnv;
 	for (typename std::basic_string<C>::const_iterator it = s.begin(); it != s.end(); ++it)
 	{
 		if (*it == '$')
@@ -107,7 +118,7 @@ template <typename C> void String2Buffer(const std::basic_string<C> &s, basic_bu
 					case '/':
 						if (++it == s.end())
 						{
-							buf << "$/";
+							buf << cnv("$/");
 							break;
 						}
 						switch (*it)
@@ -149,6 +160,8 @@ template <typename C> void String2Buffer(const std::basic_string<C> &s, basic_bu
 
 template <typename T> void ShowTime(T &buf, size_t length, bool short_names)
 {
+	StringConverter<T> cnv;
+	
 	const unsigned MINUTE = 60;
 	const unsigned HOUR = 60*MINUTE;
 	const unsigned DAY = 24*HOUR;
@@ -157,37 +170,37 @@ template <typename T> void ShowTime(T &buf, size_t length, bool short_names)
 	unsigned years = length/YEAR;
 	if (years)
 	{
-		buf << years << (short_names ? "y" : (years == 1 ? " year" : " years"));
+		buf << years << cnv(short_names ? "y" : (years == 1 ? " year" : " years"));
 		length -= years*YEAR;
 		if (length)
-			buf << ", ";
+			buf << cnv(", ");
 	}
 	unsigned days = length/DAY;
 	if (days)
 	{
-		buf << days << (short_names ? "d" : (days == 1 ? " day" : " days"));
+		buf << days << cnv(short_names ? "d" : (days == 1 ? " day" : " days"));
 		length -= days*DAY;
 		if (length)
-			buf << ", ";
+			buf << cnv(", ");
 	}
 	unsigned hours = length/HOUR;
 	if (hours)
 	{
-		buf << hours << (short_names ? "h" : (hours == 1 ? " hour" : " hours"));
+		buf << hours << cnv(short_names ? "h" : (hours == 1 ? " hour" : " hours"));
 		length -= hours*HOUR;
 		if (length)
-			buf << ", ";
+			buf << cnv(", ");
 	}
 	unsigned minutes = length/MINUTE;
 	if (minutes)
 	{
-		buf << minutes << (short_names ? "m" : (minutes == 1 ? " minute" : " minutes"));
+		buf << minutes << cnv(short_names ? "m" : (minutes == 1 ? " minute" : " minutes"));
 		length -= minutes*MINUTE;
 		if (length)
-			buf << ", ";
+			buf << cnv(", ");
 	}
 	if (length)
-		buf << length << (short_names ? "s" : (length == 1 ? " second" : " seconds"));
+		buf << length << cnv(short_names ? "s" : (length == 1 ? " second" : " seconds"));
 }
 
 template <typename T> void ShowTag(T &buf, const std::string &tag)

src/lastfm.cpp

@@ -143,7 +143,7 @@ void Lastfm::Load()
 		while (getline(input, line))
 		{
 			if (!first)
-				*w << "\n";
+				*w << '\n';
 			utf_to_locale(line);
 			*w << line;
 			first = 0;
@@ -153,7 +153,7 @@ void Lastfm::Load()
 	}
 	else
 	{
-		*w << "Fetching informations... ";
+		*w << U("Fetching informations... ");
 		pthread_create(&itsDownloader, 0, DownloadWrapper, this);
 		isDownloadInProgress = 1;
 	}

src/lyrics.cpp

@@ -249,10 +249,10 @@ void *Lyrics::Download()
 	bool fetcher_defined = itsFetcher && *itsFetcher;
 	for (LyricsFetcher **plugin = fetcher_defined ? itsFetcher : lyricsPlugins; *plugin != 0; ++plugin)
 	{
-		*w << "Fetching lyrics from " << fmtBold << (*plugin)->name() << fmtBoldEnd << "... ";
+		*w << U("Fetching lyrics from ") << fmtBold << TO_WSTRING((*plugin)->name()) << fmtBoldEnd << U("... ");
 		result = (*plugin)->fetch(artist, title);
 		if (result.first == false)
-			*w << clRed << result.second << clEnd << "\n";
+			*w << clRed << TO_WSTRING(result.second) << clEnd << '\n';
 		else
 			break;
 		if (fetcher_defined)
@@ -268,7 +268,7 @@ void *Lyrics::Download()
 		*w << result.second;
 	}
 	else
-		*w << "\nLyrics weren't found.";
+		*w << '\n' << U("Lyrics weren't found.");
 	
 	isReadyToTake = 1;
 	pthread_exit(0);
@@ -338,7 +338,7 @@ void Lyrics::Load()
 		while (getline(input, line))
 		{
 			if (!first)
-				*w << "\n";
+				*w << '\n';
 			utf_to_locale(line);
 			*w << line;
 			first = 0;
@@ -353,7 +353,7 @@ void Lyrics::Load()
 		pthread_create(&itsDownloader, 0, DownloadWrapper, this);
 		isDownloadInProgress = 1;
 #		else
-		*w << "Local lyrics not found. As ncmpcpp has been compiled without curl support, you can put appropriate lyrics into " << Config.lyrics_directory << " directory (file syntax is \"$ARTIST - $TITLE.txt\") or recompile ncmpcpp with curl support.";
+		*w << U("Local lyrics not found. As ncmpcpp has been compiled without curl support, you can put appropriate lyrics into ") << TO_WSTRING(Config.lyrics_directory) << U(" directory (file syntax is \"$ARTIST - $TITLE.txt\") or recompile ncmpcpp with curl support.");
 		w->Flush();
 #		endif
 	}

src/search_engine.cpp

@@ -137,10 +137,12 @@ void SearchEngine::EnterPressed()
 	
 	if (option < ConstraintsNumber)
 	{
-		Statusbar() << fmtBold << ConstraintsNames[option] << fmtBoldEnd << ": ";
+		std::string constraint = ConstraintsNames[option];
+		Statusbar() << fmtBold << constraint << fmtBoldEnd << ": ";
 		itsConstraints[option] = Global::wFooter->GetString(itsConstraints[option]);
 		w->Current().buffer().Clear();
-		w->Current().buffer() << fmtBold << std::setw(13) << std::left << ConstraintsNames[option] << fmtBoldEnd << ": ";
+		constraint.resize(13, ' ');
+		w->Current().buffer() << fmtBold << constraint << fmtBoldEnd << ": ";
 		ShowTag(w->Current().buffer(), itsConstraints[option]);
 	}
 	else if (option == ConstraintsNumber+1)
@@ -324,7 +326,9 @@ void SearchEngine::Prepare()
 	
 	for (size_t i = 0; i < ConstraintsNumber; ++i)
 	{
-		(*w)[i].mkBuffer() << fmtBold << std::setw(13) << std::left << ConstraintsNames[i] << fmtBoldEnd << ": ";
+		std::string constraint = ConstraintsNames[i];
+		constraint.resize(13, ' ');
+		(*w)[i].mkBuffer() << fmtBold << constraint << fmtBoldEnd << ": ";
 		ShowTag((*w)[i].buffer(), itsConstraints[i]);
 	}
 	

src/song_info.cpp

@@ -109,25 +109,24 @@ void SongInfo::PrepareSong(MPD::Song &s)
 		s.SetComment(f.tag()->comment().to8Bit(1));
 #	endif // HAVE_TAGLIB_H
 	
-	*w << fmtBold << Config.color1 << "Filename: " << fmtBoldEnd << Config.color2 << s.getName() << "\n" << clEnd;
+	*w << fmtBold << Config.color1 << U("Filename: ") << fmtBoldEnd << Config.color2 << s.getName() << '\n' << clEnd;
-	*w << fmtBold << "Directory: " << fmtBoldEnd << Config.color2;
+	*w << fmtBold << U("Directory: ") << fmtBoldEnd << Config.color2;
 	ShowTag(*w, s.getDirectory());
-	*w << "\n\n" << clEnd;
+	*w << U("\n\n") << clEnd;
-	*w << fmtBold << "Length: " << fmtBoldEnd << Config.color2 << s.getLength() << "\n" << clEnd;
+	*w << fmtBold << U("Length: ") << fmtBoldEnd << Config.color2 << s.getLength() << '\n' << clEnd;
 #	ifdef HAVE_TAGLIB_H
 	if (!f.isNull())
 	{
-		*w << fmtBold << "Bitrate: " << fmtBoldEnd << Config.color2 << f.audioProperties()->bitrate() << " kbps\n" << clEnd;
+		*w << fmtBold << U("Bitrate: ") << fmtBoldEnd << Config.color2 << f.audioProperties()->bitrate() << U(" kbps\n") << clEnd;
-		*w << fmtBold << "Sample rate: " << fmtBoldEnd << Config.color2 << f.audioProperties()->sampleRate() << " Hz\n" << clEnd;
+		*w << fmtBold << U("Sample rate: ") << fmtBoldEnd << Config.color2 << f.audioProperties()->sampleRate() << U(" Hz\n") << clEnd;
-		*w << fmtBold << "Channels: " << fmtBoldEnd << Config.color2 << (f.audioProperties()->channels() == 1 ? "Mono" : "Stereo") << "\n" << clDefault;
+		*w << fmtBold << U("Channels: ") << fmtBoldEnd << Config.color2 << (f.audioProperties()->channels() == 1 ? U("Mono") : U("Stereo")) << '\n' << clDefault;
 	}
 #	endif // HAVE_TAGLIB_H
 	*w << clDefault;
 	
 	for (const Metadata *m = Tags; m->Name; ++m)
 	{
-		*w << fmtBold << "\n" << m->Name << ": " << fmtBoldEnd;
+		*w << fmtBold << '\n' << TO_WSTRING(m->Name) << U(": ") << fmtBoldEnd;
 		ShowTag(*w, s.getTags(m->Get));
 	}
 }
-

src/strbuffer.h

@@ -136,12 +136,51 @@ namespace NCurses
 			///
 			void Clear();
 			
-			/// @param t any object that has defined ostream &operator<<()
+			basic_buffer<C> &operator<<(int n)
-			/// @return reference to itself
-			///
-			template <typename T> basic_buffer<C> &operator<<(const T &t)
 			{
-				itsString << t;
+				itsString << n;
+				return *this;
+			}
+			
+			basic_buffer<C> &operator<<(long int n)
+			{
+				itsString << n;
+				return *this;
+			}
+			
+			basic_buffer<C> &operator<<(unsigned int n)
+			{
+				itsString << n;
+				return *this;
+			}
+			
+			basic_buffer<C> &operator<<(long unsigned int n)
+			{
+				itsString << n;
+				return *this;
+			}
+			
+			basic_buffer<C> &operator<<(char c)
+			{
+				itsString << c;
+				return *this;
+			}
+			
+			basic_buffer<C> &operator<<(wchar_t c)
+			{
+				itsString << c;
+				return *this;
+			}
+			
+			basic_buffer<C> &operator<<(const C *s)
+			{
+				itsString << s;
+				return *this;
+			}
+			
+			basic_buffer<C> &operator<<(const std::basic_string<C> &s)
+			{
+				itsString << s;
 				return *this;
 			}
 			
@@ -161,9 +200,37 @@ namespace NCurses
 			///
 			basic_buffer<C> &operator<<(const basic_buffer<C> &buf);
 			
-			/// Friend operator, that handles printing
+			/// Friend operator that handles printing
 			/// the content of buffer to window object
-			friend Window &operator<< <>(Window &, const basic_buffer<C> &);
+			friend Window &operator<<(Window &w, const basic_buffer<C> &buf)
+			{
+				const std::basic_string<C> &s = buf.itsTempString ? *buf.itsTempString : buf.itsString.str();
+				if (buf.itsFormat.empty())
+					w << s;
+				else
+				{
+					std::basic_string<C> tmp;
+					auto b = buf.itsFormat.begin(), e = buf.itsFormat.end();
+					for (size_t i = 0; i < s.length() || b != e; ++i)
+					{
+						while (b != e && i == b->Position)
+						{
+							if (!tmp.empty())
+							{
+								w << tmp;
+								tmp.clear();
+							}
+							buf.LoadAttribute(w, b->Value);
+							b++;
+						}
+						if (i < s.length())
+							tmp += s[i];
+					}
+					if (!tmp.empty())
+						w << tmp;
+				}
+				return w;
+			}
 			
 		private:
 			/// Loads an attribute to given window object
@@ -281,7 +348,7 @@ template <typename C> void NCurses::basic_buffer<C>::Write(	Window &w,
 		s += separator;
 		len = 0;
 		
-		typename std::list<typename NCurses::basic_buffer<C>::FormatPos>::const_iterator lb = itsFormat.begin();
+		auto lb = itsFormat.begin();
 		if (itsFormat.back().Position > start_pos) // if there is no attributes from current position, don't load them
 		{
 			// load all attributes that are before start position
@@ -358,44 +425,10 @@ template <typename C> NCurses::basic_buffer<C> &NCurses::basic_buffer<C>::operat
 	itsString << buf.itsString.str();
 	std::list<FormatPos> tmp = buf.itsFormat;
 	if (len)
-		for (typename std::list<typename NCurses::basic_buffer<C>::FormatPos>::iterator it = tmp.begin(); it != tmp.end(); ++it)
+		for (auto it = tmp.begin(); it != tmp.end(); ++it)
 			it->Position += len;
 	itsFormat.merge(tmp);
 	return *this;
 }
 
-template <typename C> NCurses::Window &operator<<(NCurses::Window &w, const NCurses::basic_buffer<C> &buf)
-{
-	const std::basic_string<C> &s = buf.itsTempString ? *buf.itsTempString : buf.itsString.str();
-	if (buf.itsFormat.empty())
-	{
-		w << s;
-	}
-	else
-	{
-		std::basic_string<C> tmp;
-		typename std::list<typename NCurses::basic_buffer<C>::FormatPos>::const_iterator b = buf.itsFormat.begin();
-		typename std::list<typename NCurses::basic_buffer<C>::FormatPos>::const_iterator e = buf.itsFormat.end();
-		for (size_t i = 0; i < s.length() || b != e; ++i)
-		{
-			while (b != e && i == b->Position)
-			{
-				if (!tmp.empty())
-				{
-					w << tmp;
-					tmp.clear();
-				}
-				buf.LoadAttribute(w, b->Value);
-				b++;
-			}
-			if (i < s.length())
-				tmp += s[i];
-		}
-		if (!tmp.empty())
-			w << tmp;
-	}
-	return w;
-}
-
 #endif
-