2008-04-13 Tatsuhiro Tsujikawa <tujikawa at rednoah dot com>

	Implemented auto protocol detection.
	Now you can do:
	aria2c -Z http://host/file file1.torrent file2.metalink
	(Note: -Z option is required for auto protcol detection.)
	Then aria2c downloads 3 files simultaneously:
	1. http://host/file
	2. file1.torrent <-- read local torrent file
	3. file2.metalink <-- read local Metalink file.

	Same thing goes with -i option. Assume your uris.txt contans:
	http://host/file
	file1.torrent
	file2.metalink
	Then you can do: aria2c -i uris.txt
	(Note: -Z option is not needed if -i option is given.)
	
	* src/main.cc
	* src/ProtocolDetector.{cc, h}
	* test/ProtocolDetectorTest.cc

1 files changed, 76 insertions, 0 deletions

diff --git a/src/ProtocolDetector.cc b/src/ProtocolDetector.cc
new file mode 100644
index 00000000..9a01736f
--- /dev/null
+++ b/src/ProtocolDetector.cc
@@ -0,0 +1,76 @@
+/* <!-- copyright */
+/*
+ * aria2 - The high speed download utility
+ *
+ * Copyright (C) 2006 Tatsuhiro Tsujikawa
+ *
+ * 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
+ *
+ * In addition, as a special exception, the copyright holders give
+ * permission to link the code of portions of this program with the
+ * OpenSSL library under certain conditions as described in each
+ * individual source file, and distribute linked combinations
+ * including the two.
+ * You must obey the GNU General Public License in all respects
+ * for all of the code used other than OpenSSL.  If you modify
+ * file(s) with this exception, you may extend this exception to your
+ * version of the file(s), but you are not obligated to do so.  If you
+ * do not wish to do so, delete this exception statement from your
+ * version.  If you delete this exception statement from all source
+ * files in the program, then also delete it here.
+ */
+/* copyright --> */
+#include "ProtocolDetector.h"
+#include "Request.h"
+#include <cstring>
+#include <fstream>
+#include <iomanip>
+
+namespace aria2 {
+
+ProtocolDetector::ProtocolDetector() {}
+
+ProtocolDetector::~ProtocolDetector() {}
+
+bool ProtocolDetector::isStreamProtocol(const std::string& uri) const
+{
+  return Request().setUrl(uri);
+}
+
+bool ProtocolDetector::guessTorrentFile(const std::string& uri) const
+{
+  std::ifstream in(uri.c_str());
+  if(in) {
+    char head;
+    in >> head;
+    return head == 'd';
+  } else {
+    return false;
+  }
+}
+
+bool ProtocolDetector::guessMetalinkFile(const std::string& uri) const
+{
+  std::ifstream in(uri.c_str());
+  if(in) {
+    char head[6];
+    in >> std::setw(6) >> head;
+    return strcmp(head, "<?xml") == 0;
+  } else {
+    return false;
+  }
+}
+
+} // namespace aria2