Input*: move to input/

src/input/plugins/ArchiveInputPlugin.cxx

@@ -0,0 +1,99 @@
+/*
+ * 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 "ArchiveInputPlugin.hxx"
+#include "archive/ArchiveDomain.hxx"
+#include "archive/ArchiveLookup.hxx"
+#include "archive/ArchiveList.hxx"
+#include "archive/ArchivePlugin.hxx"
+#include "archive/ArchiveFile.hxx"
+#include "../InputPlugin.hxx"
+#include "fs/Traits.hxx"
+#include "util/Alloc.hxx"
+#include "Log.hxx"
+
+#include <stdlib.h>
+
+/**
+ * select correct archive plugin to handle the input stream
+ * may allow stacking of archive plugins. for example for handling
+ * tar.gz a gzip handler opens file (through inputfile stream)
+ * then it opens a tar handler and sets gzip inputstream as
+ * parent_stream so tar plugin fetches file data from gzip
+ * plugin and gzip fetches file from disk
+ */
+static InputStream *
+input_archive_open(const char *pathname,
+		   Mutex &mutex, Cond &cond,
+		   Error &error)
+{
+	const struct archive_plugin *arplug;
+	InputStream *is;
+
+	if (!PathTraitsFS::IsAbsolute(pathname))
+		return nullptr;
+
+	char *pname = strdup(pathname);
+	// archive_lookup will modify pname when true is returned
+	const char *archive, *filename, *suffix;
+	if (!archive_lookup(pname, &archive, &filename, &suffix)) {
+		FormatDebug(archive_domain,
+			    "not an archive, lookup %s failed", pname);
+		free(pname);
+		return nullptr;
+	}
+
+	//check which archive plugin to use (by ext)
+	arplug = archive_plugin_from_suffix(suffix);
+	if (!arplug) {
+		FormatWarning(archive_domain,
+			      "can't handle archive %s", archive);
+		free(pname);
+		return nullptr;
+	}
+
+	auto file = archive_file_open(arplug, archive, error);
+	if (file == nullptr) {
+		free(pname);
+		return nullptr;
+	}
+
+	//setup fileops
+	is = file->OpenStream(filename, mutex, cond, error);
+	free(pname);
+	file->Close();
+
+	return is;
+}
+
+const InputPlugin input_plugin_archive = {
+	"archive",
+	nullptr,
+	nullptr,
+	input_archive_open,
+	nullptr,
+	nullptr,
+	nullptr,
+	nullptr,
+	nullptr,
+	nullptr,
+	nullptr,
+	nullptr,
+};