added a plugin system for lyrics sources

git-svn-id: https://svn.musicpd.org/ncmpc/branches/tradiaz@5217 09075e82-0dd4-0310-85a5-a0d7c8717e4f

1 files changed, 89 insertions, 0 deletions

diff --git a/plugins/leoslyrics/easy_download.c b/plugins/leoslyrics/easy_download.c
new file mode 100644
index 000000000..83616cf87
--- /dev/null
+++ b/plugins/leoslyrics/easy_download.c
@@ -0,0 +1,89 @@
+/*	by Qball
+ *  
+ *  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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <glib.h>
+#include "ncmpc.h"
+
+#ifdef ENABLE_LYRICS_SCREEN
+
+#include <curl/curl.h>
+#include "easy_download.h"
+
+static size_t write_data(void *buffer, size_t size,
+	size_t nmemb, easy_download_struct *dld)
+{
+	if(dld->data == NULL)
+	{
+		dld->size = 0;
+	}
+	dld->data = g_realloc(dld->data,(gulong)(size*nmemb+dld->size));
+
+	memset(&(dld->data)[dld->size], '\0', (size*nmemb));
+	memcpy(&(dld->data)[dld->size], buffer, size*nmemb);
+
+	dld->size += size*nmemb;
+	if(dld->size >= dld->max_size && dld->max_size > 0)
+	{
+		return 0;
+	}
+	return size*nmemb;
+}
+
+int easy_download(char *url,easy_download_struct *dld,
+		curl_progress_callback cb)
+{
+	CURL *curl = NULL;
+	int res;
+	if(!dld) return 0;
+	easy_download_clean(dld);
+	/* initialize curl */
+	curl = curl_easy_init();
+	if(!curl) return 0;
+	/* set uri */
+	curl_easy_setopt(curl, CURLOPT_URL, url);
+	/* set callback data */
+	curl_easy_setopt(curl, CURLOPT_WRITEDATA, dld);
+	/* set callback function */
+	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
+	curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 0);
+	curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, cb);
+	/* run */
+	res = curl_easy_perform(curl);
+	/* cleanup */
+	curl_easy_cleanup(curl);
+	if(!res)
+	{
+		return 1;
+	}
+	if(dld->data) g_free(dld->data);
+	return 0;
+}
+
+void easy_download_clean(easy_download_struct *dld)
+{
+	if(dld->data)g_free(dld->data);
+	dld->data = NULL;
+	dld->size = 0;
+	dld->max_size = -1;
+}
+
+#endif