add lyrics screen

src/lyrics.cpp

@@ -0,0 +1,107 @@
+/***************************************************************************
+ *   Copyright (C) 2008 by Andrzej Rybczak   *
+ *   electricityispower@gmail.com   *
+ *                                                                         *
+ *   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.,                                       *
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ ***************************************************************************/
+
+#include "lyrics.h"
+
+const string lyrics_folder = home_folder + "/" + ".lyrics";
+const string mkdir_command = "mkdir " + lyrics_folder + " &>/dev/null";
+
+size_t write_data(char *buffer, size_t size, size_t nmemb, string data)
+{
+	int result = 0;
+	if (buffer)
+	{
+		data += buffer;
+		result = size*nmemb;
+	}
+	return result;
+}
+
+string GetLyrics(string artist, string song)
+{
+	const string filename = artist + " - " + song + ".txt";
+	const string fullpath = lyrics_folder + "/" + filename;
+	system(mkdir_command.c_str());
+	
+	string result;
+	std::ifstream input(fullpath.c_str());
+	
+	if (input.is_open())
+	{
+		string line;
+		while (getline(input, line))
+			result += line + "\n";
+		return result;
+	}
+	
+#	ifdef HAVE_CURL_CURL_H
+	for (string::iterator it = artist.begin(); it != artist.end(); it++)
+		if (*it == ' ')
+			*it = '+';
+	
+	for (string::iterator it = song.begin(); it != song.end(); it++)
+		if (*it == ' ')
+			*it = '+';
+	
+	CURLcode code;
+	
+	string url = "http://lyricwiki.org/api.php?artist=" + artist + "&song=" + song + "&fmt=xml";
+	
+	CURL *lyrics = curl_easy_init();
+	curl_easy_setopt(lyrics, CURLOPT_URL, url.c_str());
+	curl_easy_setopt(lyrics, CURLOPT_WRITEFUNCTION, write_data);
+	curl_easy_setopt(lyrics, CURLOPT_WRITEDATA, &result);
+	curl_easy_setopt(lyrics, CURLOPT_CONNECTTIMEOUT, 30);
+	code = curl_easy_perform(lyrics);
+	curl_easy_cleanup(lyrics);
+	
+	if (code != CURLE_OK)
+	{
+		result = "Error while fetching lyrics: " + string(curl_easy_strerror(code));
+		return result;
+	}
+	
+	int a, b;
+	a = result.find("<lyrics>")+8;
+	b = result.find("</lyrics>");
+	
+	result = result.substr(a, b-a);
+	
+	if (result == "Not found")
+		return result;
+	
+	for (int i = result.find("&#039;"); i != string::npos; i = result.find("&#039;"))
+		result.replace(i, 6, "'");
+	for (int i = result.find("&quot;"); i != string::npos; i = result.find("&quot;"))
+		result.replace(i, 6, "\"");
+	
+	std::ofstream output(fullpath.c_str());
+	
+	if (output.is_open())
+	{
+		output << result;
+		output.close();
+	}
+#	else
+	result = "Local lyrics not found. As ncmpcpp has been compiled without curl support, you can put appropriate lyrics into ~/.lyrics directory (file syntax is \"ARTIST - TITLE.txt\") or recompile ncmpcpp with curl support.";
+#	endif
+	return result + '\n';
+}
+