lyrics: redesigned plugins system

src/lyrics_fetcher.cpp

@@ -0,0 +1,93 @@
+/***************************************************************************
+ *   Copyright (C) 2008-2010 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.,                                       *
+ *   51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.              *
+ ***************************************************************************/
+
+#include "curl_handle.h"
+
+#ifdef HAVE_CURL_CURL_H
+
+#include "conv.h"
+#include "lyrics_fetcher.h"
+
+LyricsFetcher *lyricsPlugins[] =
+{
+	new LyrcComArFetcher(),
+	new LyricsflyFetcher(),
+	0
+};
+
+LyricsFetcher::Result LyricsFetcher::fetch(const std::string &artist, const std::string &title)
+{
+	Result result;
+	result.first = false;
+	
+	std::string url = getURL();
+	Replace(url, "%artist%", artist.c_str());
+	Replace(url, "%title%", title.c_str());
+	
+	std::string data;
+	CURLcode code = Curl::perform(url, data);
+	
+	if (code != CURLE_OK)
+	{
+		result.second = "Error while fetching lyrics: ";
+		result.second += curl_easy_strerror(code);
+		return result;
+	}
+	
+	size_t a, b;
+	bool parse_failed = false;
+	if ((a = data.find(getOpenTag())) != std::string::npos)
+	{
+		a += strlen(getCloseTag())-1;
+		if ((b = data.find(getCloseTag(), a)) != std::string::npos)
+			data = data.substr(a, b-a);
+		else
+			parse_failed = true;
+	}
+	else
+		parse_failed = true;
+	
+	if (parse_failed || notLyrics(data))
+	{
+		result.second = "Not found";
+		return result;
+	}
+	
+	postProcess(data);
+	
+	result.second = data;
+	result.first = true;
+	return result;
+}
+
+void LyricsFetcher::postProcess(std::string &data)
+{
+	EscapeHtml(data);
+	Trim(data);
+}
+
+void LyricsflyFetcher::postProcess(std::string &data)
+{
+	Replace(data, "[br]", "");
+	Trim(data);
+}
+
+#endif // HAVE_CURL_CURL_H
+