2007-03-24 Tatsuhiro Tsujikawa <tujikawa at rednoah dot com>

	To add the ability to resume downloading a partially downloaded 
file
	which is downloaded from the beginning:
	* src/FileAllocator.h: Made abstract class. New 
DefaultFileAllocator
	takes this role.
	* src/main.cc: Added -c option.
	* src/BitfieldMan.h, src/BitfieldMan.cc (setBitRange): New 
function.
	* src/DiskWriter.h (openExistingFile): Added totalLength 
argument.
	* src/prefs.h (PREF_CONTINUE): New definition.
	* src/SegmentMan.h, src/SegmentMan.cc (markPieceDone): New 
function.
	* src/DefaultDiskWriter.cc
	(createNewDiskWriter): Add GlowFileAllocator to the new object.
	* src/AbstractDiskWriter.h
	(glowFileAllocator): New variable.
	* src/AbstractDiskWriter.cc
	(openExistingFile): Now preallocate file space from the end of 
the
	existing file if totalLength argument is specified and grater 
than 0.
	* src/UrlRequestInfo.cc: If -c option is specified and the file
	to download exists in local, continue the download of the file.
	--allow-overwrite=true is assumed in this context.
	* src/DefaultFileAllocator.h, src/DefaultFileAllocator.cc: New 
class.
	* src/GlowFileAllocator.h, src/GlowFileAllocator.cc: New class.

	Throw exception if --check-integrity=true is specified but chunk
	checksums are not provided:
	* src/UrlRequestInfo.cc

1 files changed, 2 insertions, 1 deletions

diff --git a/src/ByteArrayDiskWriter.cc b/src/ByteArrayDiskWriter.cc
index ca9564f7..089a6c21 100644
--- a/src/ByteArrayDiskWriter.cc
+++ b/src/ByteArrayDiskWriter.cc
@@ -68,7 +68,8 @@ void ByteArrayDiskWriter::closeFile() {
   clear();
 }
 
-void ByteArrayDiskWriter::openExistingFile(const string& filename) {
+void ByteArrayDiskWriter::openExistingFile(const string& filename,
+					   int64_t totalLength) {
   openFile(filename);
 }