decoder/{vorbis,flac}: move duplicate code to tag/VorbisComment.cxx

2 files changed, 75 insertions, 0 deletions

diff --git a/src/tag/VorbisComment.cxx b/src/tag/VorbisComment.cxx
new file mode 100644
index 000000000..2dfc058d8
--- /dev/null
+++ b/src/tag/VorbisComment.cxx
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2003-2014 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 "VorbisComment.hxx"
+#include "util/ASCII.hxx"
+
+#include <assert.h>
+#include <string.h>
+
+const char *
+vorbis_comment_value(const char *entry, const char *name)
+{
+	assert(entry != nullptr);
+	assert(name != nullptr);
+	assert(*name != 0);
+
+	const size_t length = strlen(name);
+
+	if (StringEqualsCaseASCII(entry, name, length) &&
+	    entry[length] == '=')
+		return entry + length + 1;
+
+	return nullptr;
+}
diff --git a/src/tag/VorbisComment.hxx b/src/tag/VorbisComment.hxx
new file mode 100644
index 000000000..1dd3371c8
--- /dev/null
+++ b/src/tag/VorbisComment.hxx
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2003-2014 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_TAG_VORBIS_COMMENT_HXX
+#define MPD_TAG_VORBIS_COMMENT_HXX
+
+#include "check.h"
+#include "Compiler.h"
+
+/**
+ * Checks if the specified name matches the entry's name, and if yes,
+ * returns the comment value.
+ */
+gcc_pure
+const char *
+vorbis_comment_value(const char *entry, const char *name);
+
+#endif