playlist/SoundCloud: move code to Yajl::Parse(InputStream&)

Makefile.am

@@ -243,6 +243,7 @@ CURL_SOURCES = \
 	src/lib/curl/Slist.hxx
 
 YAJL_SOURCES = \
+	src/lib/yajl/ParseInputStream.cxx src/lib/yajl/ParseInputStream.hxx \
 	src/lib/yajl/Handle.hxx
 
 UPNP_SOURCES = \

src/lib/yajl/ParseInputStream.cxx

@@ -0,0 +1,43 @@
+/*
+ * Copyright 2003-2018 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+#include "ParseInputStream.hxx"
+#include "Handle.hxx"
+#include "input/InputStream.hxx"
+
+void
+Yajl::ParseInputStream(Handle &handle, InputStream &is)
+{
+	const std::lock_guard<Mutex> protect(is.mutex);
+
+	bool done = false;
+
+	while (!done) {
+		unsigned char buffer[4096];
+		const size_t nbytes = is.Read(buffer, sizeof(buffer));
+		if (nbytes == 0)
+			done = true;
+
+		if (done) {
+			handle.CompleteParse();
+		} else
+			handle.Parse(buffer, nbytes);
+	}
+}

src/lib/yajl/ParseInputStream.hxx

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2003-2018 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef YAJL_PARSE_INPUT_STREAM_HXX
+#define YAJL_PARSE_INPUT_STREAM_HXX
+
+class InputStream;
+
+namespace Yajl {
+
+class Handle;
+
+void
+ParseInputStream(Handle &handle, InputStream &is);
+
+} // namespace Yajl
+
+#endif

src/playlist/plugins/SoundCloudPlaylistPlugin.cxx

@@ -22,6 +22,7 @@
 #include "../PlaylistPlugin.hxx"
 #include "../MemorySongEnumerator.hxx"
 #include "lib/yajl/Handle.hxx"
+#include "lib/yajl/ParseInputStream.hxx"
 #include "config/Block.hxx"
 #include "input/InputStream.hxx"
 #include "tag/Builder.hxx"
@@ -227,23 +228,7 @@ soundcloud_parse_json(const char *url, Yajl::Handle &handle,
 		      Mutex &mutex, Cond &cond)
 {
 	auto input_stream = InputStream::OpenReady(url, mutex, cond);
-
+	Yajl::ParseInputStream(handle, *input_stream);
-	const std::lock_guard<Mutex> protect(mutex);
-
-	bool done = false;
-
-	while (!done) {
-		unsigned char buffer[4096];
-		const size_t nbytes =
-			input_stream->Read(buffer, sizeof(buffer));
-		if (nbytes == 0)
-			done = true;
-
-		if (done) {
-			handle.CompleteParse();
-		} else
-			handle.Parse(buffer, nbytes);
-	}
 }
 
 /**