TagStream, decoder/Thread, ...: ignore MIME type parameters for matching plugins

Makefile.am

@@ -406,6 +406,7 @@ libutil_a_SOURCES = \
 	src/util/UTF8.cxx src/util/UTF8.hxx \
 	src/util/CharUtil.hxx \
 	src/util/NumberParser.hxx \
+	src/util/MimeType.cxx src/util/MimeType.hxx \
 	src/util/StringPointer.hxx \
 	src/util/StringView.cxx src/util/StringView.hxx \
 	src/util/AllocatedString.cxx src/util/AllocatedString.hxx \
@@ -2108,6 +2109,7 @@ test_test_util_SOURCES = \
 	test/DivideStringTest.hxx \
 	test/SplitStringTest.hxx \
 	test/UriUtilTest.hxx \
+	test/MimeTypeTest.hxx \
 	test/TestCircularBuffer.hxx \
 	test/test_util.cxx
 test_test_util_CPPFLAGS = $(AM_CPPFLAGS) $(CPPUNIT_CFLAGS) -DCPPUNIT_HAVE_RTTI=0

src/TagStream.cxx

@@ -22,6 +22,7 @@
 #include "tag/Generic.hxx"
 #include "tag/TagHandler.hxx"
 #include "tag/TagBuilder.hxx"
+#include "util/MimeType.hxx"
 #include "util/UriUtil.hxx"
 #include "util/Error.hxx"
 #include "decoder/DecoderList.hxx"
@@ -51,11 +52,15 @@ tag_stream_scan(InputStream &is, const TagHandler &handler, void *ctx)
 
 	UriSuffixBuffer suffix_buffer;
 	const char *const suffix = uri_get_suffix(is.GetURI(), suffix_buffer);
-	const char *const mime = is.GetMimeType();
+	const char *mime = is.GetMimeType();
 
 	if (suffix == nullptr && mime == nullptr)
 		return false;
 
+	std::string mime_base;
+	if (mime != nullptr)
+		mime = (mime_base = GetMimeTypeBase(mime)).c_str();
+
 	return decoder_plugins_try([suffix, mime, &is,
 				    &handler, ctx](const DecoderPlugin &plugin){
 			is.LockRewind(IgnoreError());

src/decoder/DecoderThread.cxx

@@ -32,6 +32,7 @@
 #include "input/InputStream.hxx"
 #include "input/LocalOpen.hxx"
 #include "DecoderList.hxx"
+#include "util/MimeType.hxx"
 #include "util/UriUtil.hxx"
 #include "util/Error.hxx"
 #include "util/Domain.hxx"
@@ -180,7 +181,8 @@ decoder_check_plugin_mime(const DecoderPlugin &plugin, const InputStream &is)
 	assert(plugin.stream_decode != nullptr);
 
 	const char *mime_type = is.GetMimeType();
-	return mime_type != nullptr && plugin.SupportsMimeType(mime_type);
+	return mime_type != nullptr &&
+		plugin.SupportsMimeType(GetMimeTypeBase(mime_type).c_str());
 }
 
 gcc_pure

src/playlist/PlaylistRegistry.cxx

@@ -31,6 +31,7 @@
 #include "plugins/CuePlaylistPlugin.hxx"
 #include "plugins/EmbeddedCuePlaylistPlugin.hxx"
 #include "input/InputStream.hxx"
+#include "util/MimeType.hxx"
 #include "util/UriUtil.hxx"
 #include "util/StringUtil.hxx"
 #include "util/Error.hxx"
@@ -253,7 +254,7 @@ playlist_list_open_stream(InputStreamPtr &&is, const char *uri)
 	const char *const mime = is->GetMimeType();
 	if (mime != nullptr) {
 		auto playlist = playlist_list_open_stream_mime(std::move(is),
-							       mime);
+							       GetMimeTypeBase(mime).c_str());
 		if (playlist != nullptr)
 			return playlist;
 	}

src/util/MimeType.cxx

+/*
+ * Copyright 2003-2016 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 "MimeType.hxx"
+
+#include <string.h>
+
+std::string
+GetMimeTypeBase(const char *s)
+{
+	const char *semicolon = strchr(s, ';');
+	return semicolon != nullptr
+		? std::string(s, semicolon)
+		: std::string(s);
+}

src/util/MimeType.hxx

+/*
+ * Copyright 2003-2016 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 MPD_MIME_TYPE_HXX
+#define MPD_MIME_TYPE_HXX
+
+#include <string>
+
+/**
+ * Extract the part of the MIME type before the parameters, i.e. the
+ * part before the semicolon.  If there is no semicolon, it returns
+ * the string as-is.
+ */
+std::string
+GetMimeTypeBase(const char *s);
+
+#endif

test/MimeTypeTest.hxx

+/*
+ * Unit tests for src/util/
+ */
+
+#include "check.h"
+#include "util/MimeType.hxx"
+
+#include <cppunit/TestFixture.h>
+#include <cppunit/extensions/HelperMacros.h>
+
+#include <string.h>
+
+class MimeTypeTest : public CppUnit::TestFixture {
+	CPPUNIT_TEST_SUITE(MimeTypeTest);
+	CPPUNIT_TEST(TestBase);
+	CPPUNIT_TEST_SUITE_END();
+
+public:
+	void TestBase() {
+		CPPUNIT_ASSERT("" == GetMimeTypeBase(""));
+		CPPUNIT_ASSERT("" == GetMimeTypeBase(";"));
+		CPPUNIT_ASSERT("foo" == GetMimeTypeBase("foo"));
+		CPPUNIT_ASSERT("foo/bar" == GetMimeTypeBase("foo/bar"));
+		CPPUNIT_ASSERT("foo/bar" == GetMimeTypeBase("foo/bar;"));
+		CPPUNIT_ASSERT("foo/bar" == GetMimeTypeBase("foo/bar; x=y"));
+		CPPUNIT_ASSERT("foo/bar" == GetMimeTypeBase("foo/bar;x=y"));
+	}
+};

test/test_util.cxx

@@ -6,6 +6,7 @@
 #include "DivideStringTest.hxx"
 #include "SplitStringTest.hxx"
 #include "UriUtilTest.hxx"
+#include "MimeTypeTest.hxx"
 #include "TestCircularBuffer.hxx"
 
 #include <cppunit/TestFixture.h>
@@ -18,6 +19,7 @@
 CPPUNIT_TEST_SUITE_REGISTRATION(DivideStringTest);
 CPPUNIT_TEST_SUITE_REGISTRATION(SplitStringTest);
 CPPUNIT_TEST_SUITE_REGISTRATION(UriUtilTest);
+CPPUNIT_TEST_SUITE_REGISTRATION(MimeTypeTest);
 CPPUNIT_TEST_SUITE_REGISTRATION(TestCircularBuffer);
 
 int