2006-07-03 Tatsuhiro Tsujikawa <tujikawa at rednoah dot com>

	To add Metalink support(http/ftp only):

	* src/AbstractCommand.h
	(tryReserved): New function.
	* src/AbstractCommand.cc
	(execute): Call tryReserved().
	(tryReserved): New function.
	* src/Request.h
	(Requests): New type definition.
	* src/SegmentMan.h
	(reserved): New variable.
	* src/Util.h
	(fileChecksum): New function.
	(toUpper): New function.
	(toLower): New function.
	* src/Util.cc
	(messageDigest.h): Included.
	(trim): Trim \r\n\t.
	(fileChecksum): New function.
	(toUpper): New function.
	(toLower): New function.
	* src/main.cc
	(normalDownload): New function.
	(main): Added 2 command-line options: metalink-file,
	metalink-connection. Their usage has not been written yet.
	* src/MetalinkProcessor.h: New class.
	* src/Xml2MetalinkProcessor.h: New class.
	* src/Xml2MetalinkProcessor.cc: New class.
	* src/MetalinkEntry.h: New class.
	* src/MetalinkEntry.cc: New class.
	* src/MetalinkResource.h: New class.
	* src/MetalinkResource.cc: New class.
	
	To add md5 message digest checking:

	* src/messageDigest.h: Rewritten.
	* src/MultiDiskWriter.cc: Updated according to the changes in
	messageDigest.h.
	* src/ShaVisitor.cc: Updated according to the changes in
	messageDigest.h.
	* src/Util.cc: Updated according to the changes in 
messageDigest.h.
	* src/AbstractDiskWriter.cc: Updated according to the changes in
	messageDigest.h.
	
	To fix a bug that causes segfault when the payload length in 
peer
	message is less than 0:

	* src/PeerConnection.cc:
	(receiveMessage): Fixed the bug.
	* src/PeerMessageUtil.cc
	(checkLength): Throw an exception if length is less than or 
equals to
	0.
	
	To add new interfaces to Base64 encoding/decoding:

	* src/Base64.h
	(part_encode): Changed the method signature.
	(encode): New function(overload).
	(decode): New function(overload).
	* src/Base64.cc
	(part_encode): Rewritten.
	(encode): Rewritten.
	(encode): New function(overload).

	To prevent a peer to download same piece if there is an error in
	checksum:

	* src/PieceMessage.cc
	(receivedAction): Call peerInteraction->abortPiece().
	

1 files changed, 74 insertions, 0 deletions

diff --git a/src/Metalinker.cc b/src/Metalinker.cc
new file mode 100644
index 00000000..303ce97b
--- /dev/null
+++ b/src/Metalinker.cc
@@ -0,0 +1,74 @@
+/* <!-- copyright */
+/*
+ * aria2 - a simple utility for downloading files faster
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+/* copyright --> */
+#include "Metalinker.h"
+#include <algorithm>
+
+Metalinker::Metalinker() {
+}
+
+Metalinker::~Metalinker() {
+  for_each(entries.begin(), entries.end(), Deleter());
+}
+
+class EntryQuery {
+private:
+  string version;
+  string language;
+  string os;
+public:
+  EntryQuery(const string& version,
+	     const string& language,
+	     const string& os):version(version),
+			       language(language),
+			       os(os) {}
+  bool operator()(const MetalinkEntry* entry) {
+    if(!version.empty()) {
+      if(version != entry->version) {
+	return false;
+      }
+    }
+    if(!language.empty()) {
+      if(language != entry->language) {
+	return false;
+      }
+    }
+    if(!os.empty()) {
+      if(os != entry->os) {
+	return false;
+      }
+    }
+    return true;
+  }
+};
+
+MetalinkEntry* Metalinker::queryEntry(const string& version,
+				      const string& language,
+				      const string& os) const {
+  MetalinkEntries::const_iterator itr =
+    find_if(entries.begin(), entries.end(),
+	    EntryQuery(version, language, os));
+  if(itr == entries.end()) {
+    return NULL;
+  } else {
+    return *itr;
+  }
+}