put CURL related functions into a separate file

src/Makefile.am

@@ -1,17 +1,18 @@
 bin_PROGRAMS = ncmpcpp
-ncmpcpp_SOURCES = browser.cpp charset.cpp clock.cpp conv.cpp display.cpp \
-	error.cpp help.cpp helpers.cpp info.cpp lyrics.cpp media_library.cpp menu.cpp \
-	mpdpp.cpp ncmpcpp.cpp outputs.cpp playlist.cpp playlist_editor.cpp scrollpad.cpp \
-	search_engine.cpp sel_items_adder.cpp server_info.cpp settings.cpp song.cpp status.cpp \
-	tag_editor.cpp tiny_tag_editor.cpp tolower.cpp visualizer.cpp window.cpp
+ncmpcpp_SOURCES = browser.cpp charset.cpp clock.cpp conv.cpp curl_handle.cpp \
+	display.cpp error.cpp help.cpp helpers.cpp info.cpp lyrics.cpp media_library.cpp \
+	menu.cpp mpdpp.cpp ncmpcpp.cpp outputs.cpp playlist.cpp playlist_editor.cpp \
+	scrollpad.cpp search_engine.cpp sel_items_adder.cpp server_info.cpp settings.cpp \
+	song.cpp status.cpp tag_editor.cpp tiny_tag_editor.cpp tolower.cpp \
+	visualizer.cpp window.cpp
 
 # set the include path found by configure
 INCLUDES= $(all_includes)
 
 # the library search path.
 ncmpcpp_LDFLAGS = $(all_libraries)
-noinst_HEADERS = browser.h charset.h clock.h conv.h display.h error.h global.h \
-	help.h helpers.h home.h info.h lyrics.h media_library.h menu.h mpdpp.h \
-	outputs.h playlist_editor.h screen.h scrollpad.h search_engine.h \
+noinst_HEADERS = browser.h charset.h clock.h conv.h curl_handle.h display.h \
+	error.h global.h help.h helpers.h home.h info.h lyrics.h media_library.h menu.h \
+	mpdpp.h outputs.h playlist_editor.h screen.h scrollpad.h search_engine.h \
 	sel_items_adder.h server_info.h settings.h song.h tag_editor.h tiny_tag_editor.h \
 	tolower.h visualizer.h window.h

src/curl_handle.cpp

@@ -0,0 +1,67 @@
+/***************************************************************************
+ *   Copyright (C) 2008-2009 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 <cstdlib>
+
+namespace
+{
+	size_t write_data(char *buffer, size_t size, size_t nmemb, void *data)
+	{
+		size_t result = size*nmemb;
+		static_cast<std::string *>(data)->append(buffer, result);
+		return result;
+	}
+}
+
+CURLcode Curl::perform(const std::string &URL, std::string &data, unsigned timeout)
+{
+#	ifdef HAVE_PTHREAD_H
+	static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
+	pthread_mutex_lock(&lock);
+#	endif
+	CURLcode result;
+	CURL *c = curl_easy_init();
+	curl_easy_setopt(c, CURLOPT_URL, URL.c_str());
+	curl_easy_setopt(c, CURLOPT_WRITEFUNCTION, write_data);
+	curl_easy_setopt(c, CURLOPT_WRITEDATA, &data);
+	curl_easy_setopt(c, CURLOPT_CONNECTTIMEOUT, timeout);
+	curl_easy_setopt(c, CURLOPT_NOSIGNAL, 1);
+	result = curl_easy_perform(c);
+	curl_easy_cleanup(c);
+#	ifdef HAVE_PTHREAD_H
+	pthread_mutex_unlock(&lock);
+#	endif
+	return result;
+}
+
+std::string Curl::escape(const std::string &s)
+{
+	char *cs = curl_easy_escape(0, s.c_str(), s.length());
+	std::string result(cs);
+	curl_free(cs);
+	return result;
+}
+
+#endif // HAVE_CURL_CURL_H
+

src/curl_handle.h

@@ -0,0 +1,47 @@
+/***************************************************************************
+ *   Copyright (C) 2008-2009 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.              *
+ ***************************************************************************/
+
+#ifndef _CURL_HANDLE_H
+#define _CURL_HANDLE_H
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#ifdef HAVE_CURL_CURL_H
+
+#ifdef HAVE_PTHREAD_H
+# include <pthread.h>
+#endif // HAVE_PTHREAD_H
+
+#include <string>
+#include "curl/curl.h"
+
+namespace Curl
+{
+	CURLcode perform(const std::string &URL, std::string &data, unsigned timeout = 10);
+	
+	std::string escape(const std::string &s);
+}
+
+#endif // HAVE_CURL_CURL_H
+
+#endif
+

src/helpers.cpp

@@ -408,12 +408,3 @@ std::basic_string<my_char_t> Scroller(const std::basic_string<my_char_t> &str, s
 	return result;
 }
 
-#ifdef HAVE_CURL_CURL_H
-size_t write_data(char *buffer, size_t size, size_t nmemb, void *data)
-{
-	size_t result = size*nmemb;
-	static_cast<std::string *>(data)->append(buffer, result);
-	return result;
-}
-#endif // HAVE_CURL_CURL_H
-

src/helpers.h

@@ -218,9 +218,5 @@ std::string GetLineValue(std::string &, char = '"', char = '"', bool = 0);
 
 std::basic_string<my_char_t> Scroller(const std::basic_string<my_char_t> &str, size_t &pos, size_t width);
 
-#ifdef HAVE_CURL_CURL_H
-size_t write_data(char *, size_t, size_t, void *);
-#endif
-
 #endif
 

src/info.cpp

@@ -19,6 +19,7 @@
  ***************************************************************************/
 
 #include "info.h"
+#include "curl_handle.h"
 
 #ifdef HAVE_CURL_CURL_H
 # include <fstream>
@@ -27,8 +28,6 @@
 # else
 #  include <sys/stat.h>
 # endif // WIN32
-# include "curl/curl.h"
-# include "helpers.h"
 #endif
 
 #include "browser.h"
@@ -236,26 +235,12 @@ void *Info::PrepareArtist(void *screen_void_ptr)
 {
 	Info *screen = static_cast<Info *>(screen_void_ptr);
 	
-	char *c_artist = curl_easy_escape(0, screen->itsArtist.c_str(), screen->itsArtist.length());
 	std::string url = "http://ws.audioscrobbler.com/2.0/?method=artist.getinfo&artist=";
-	url += c_artist;
+	url += Curl::escape(screen->itsArtist);
 	url += "&api_key=d94e5b6e26469a2d1ffae8ef20131b79";
 	
 	std::string result;
-	CURLcode code;
-	
-	pthread_mutex_lock(&Global::CurlLock);
-	CURL *info = curl_easy_init();
-	curl_easy_setopt(info, CURLOPT_URL, url.c_str());
-	curl_easy_setopt(info, CURLOPT_WRITEFUNCTION, write_data);
-	curl_easy_setopt(info, CURLOPT_WRITEDATA, &result);
-	curl_easy_setopt(info, CURLOPT_CONNECTTIMEOUT, 10);
-	curl_easy_setopt(info, CURLOPT_NOSIGNAL, 1);
-	code = curl_easy_perform(info);
-	curl_easy_cleanup(info);
-	pthread_mutex_unlock(&Global::CurlLock);
-	
-	curl_free(c_artist);
+	CURLcode code = Curl::perform(url, result);
 	
 	if (code != CURLE_OK)
 	{

src/lyrics.cpp

@@ -31,6 +31,7 @@
 
 #include "browser.h"
 #include "charset.h"
+#include "curl_handle.h"
 #include "global.h"
 #include "helpers.h"
 
@@ -63,7 +64,6 @@ bool Lyrics::Ready = 0;
 
 #ifdef HAVE_PTHREAD_H
 pthread_t *Lyrics::Downloader = 0;
-pthread_mutex_t Global::CurlLock = PTHREAD_MUTEX_INITIALIZER;
 #endif // HAVE_PTHREAD_H
 #endif // HAVE_CURL_CURL_H
 
@@ -211,27 +211,11 @@ void *Lyrics::Get(void *screen_void_ptr)
 	std::string artist = locale_to_utf_cpy(screen->itsSong.GetArtist());
 	std::string title = locale_to_utf_cpy(screen->itsSong.GetTitle());
 	
-	char *c_artist = curl_easy_escape(0, artist.c_str(), artist.length());
-	char *c_title = curl_easy_escape(0, title.c_str(), title.length());
-	
 	std::string url = my_lyrics->url;
-	Replace(url, "%artist%", c_artist);
-	Replace(url, "%title%", c_title);
-	
-	CURLcode code;
-	pthread_mutex_lock(&Global::CurlLock);
-	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, 10);
-	curl_easy_setopt(lyrics, CURLOPT_NOSIGNAL, 1);
-	code = curl_easy_perform(lyrics);
-	curl_easy_cleanup(lyrics);
-	pthread_mutex_unlock(&Global::CurlLock);
+	Replace(url, "%artist%", Curl::escape(artist).c_str());
+	Replace(url, "%title%", Curl::escape(title).c_str());
 	
-	curl_free(c_artist);
-	curl_free(c_title);
+	CURLcode code = Curl::perform(url, result);
 	
 	if (code != CURLE_OK)
 	{
@@ -372,7 +356,7 @@ const Lyrics::Plugin Lyrics::LyricsPlugin =
 	LyricsPlugin_NotFound
 };*/
 
-bool Lyrics::Generic_NotFound(const std::string &s)
+bool Lyrics::Generic_NotFound(const std::string &)
 {
 	// it should never fail as open_tag and close_tag
 	// are not present if lyrics are not found

src/lyrics.h

@@ -25,10 +25,6 @@
 #include "mpdpp.h"
 #include "screen.h"
 
-#ifdef HAVE_CURL_CURL_H
-# include "curl/curl.h"
-#endif
-
 class Lyrics : public Screen<Scrollpad>
 {
 	struct Plugin

src/ncmpcpp.h

@@ -28,8 +28,6 @@
 #ifdef HAVE_PTHREAD_H
 # include <pthread.h>
 #else
-# define pthread_mutex_lock(x);
-# define pthread_mutex_unlock(x);
 # define pthread_exit(x) return (x)
 #endif // HAVE_PTHREAD_H