gecko-dev/modules/libjar/nsJARURI.h
brendan%mozilla.org 6d895baf1d Bit checkin for bug 68045, r/sr=waterson&shaver, second attempt. It all works
for me on optimized and debug gcc2.96, rh7.1.

- Better failure codes from nsXULPrototypeScript::Deserialize.

- Call nsXULDocument::AbortFastLoads after nsXULPrototypeScript::Serialize
  failure, instead of just nulling the FastLoad service's output stream.

- Expose nsXULDocument::AbortFastLoads via nsIXULPrototypeCache, for use from
  nsChromeProtocolHandler.cpp.  AbortFastLoads flushes the XUL cache now, for
  good measure.

- The needless "Current" adjective in nsIFastLoadService attribute and method
  names is no more.

- Add a do_GetFastLoadService() helper, to use CID instead of contractid, and
  to let the compiler consolidate the static inline CID.

- Add "nglayout.debug.checksum_xul_fastload_file" pref so people can do without
  the checksum verification step when reading a FastLoad file.

- Verify the FastLoad file checksum, by default.  Also, cache it in the FastLoad
  service so we don't recompute it when re-opening the FastLoad file as mailnews
  and other top-levels start up.  Fill the checksum cache in EndFastLoad, when
  the last pseudo-concurrent top-level finishes loading.

  My hope to compute the checksum while writing the FastLoad file ran afoul of
  misordered writes.  The old code to checksum the in-memory nsFastLoadHeader
  also was broken on little endian platforms.  Now all checksumming is done via
  a separate read pass over the complete file, save for the header's checksum
  field, which is summed as if it contained zero.

- Track and check FastLoad file dependencies.  This required groveling with a
  bunch of Necko interfaces in nsChromeProtocolHandler::NewChannel -- read it
  and weep.  Dependency checking, as well as checksum access and computation,
  use better-factored nsIFastLoad{File,Read,Write}Control interfaces.

- nsBufferedStream::Seek wasn't flushing the buffer when seeking backward
  within the buffer, but it must, because mCursor bounds the amount to write
  if the buffer contains the end of file.

- Add an unbufferedStream readonly attribute to nsIStreamBufferAccess, so we
  don't have to screw around with the bufferying layer when checksumming. Also
  implement nsIStreamBufferAccess in nsBufferedOutputStream.

- nsISeekableOutputStream was bogus, based on a bad state I had put the
  nsBufferedOutputStream code in on its way from being completely broken when
  you seek backwards outside of the buffer.  Removing this interface required
  using nsIFastLoadFileIO in nsFastLoadFileWriter, and it also required careful
  ordering of Close calls (the Reader must close after the Writer or Updater,
  so that the Reader's underlying, unbuffered input stream can be read by
  nsFastLoadFileWriter::Close to compute the checksum.

- Miscellaneous tab/indentation, comment typo, bracing, if( => if ( style,
  nsnull vs. 0, useless variable elimination, tortured control flow,
  AutoString instead of String, and gratuitous ; after nsISupportsUtils.h
  macro call cleanups.
2001-08-21 20:51:34 +00:00

58 lines
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C++

/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsJARURI_h__
#define nsJARURI_h__
#include "nsIJARURI.h"
#include "nsISerializable.h"
#include "nsCOMPtr.h"
#define NS_JARURI_CID \
{ /* 0xc7e410d7-0x85f2-11d3-9f63-006008a6efe9 */ \
0xc7e410d7, \
0x85f2, \
0x11d3, \
{0x9f, 0x63, 0x00, 0x60, 0x08, 0xa6, 0xef, 0xe9} \
}
class nsJARURI : public nsIJARURI, nsISerializable
{
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIURI
NS_DECL_NSIJARURI
NS_DECL_NSISERIALIZABLE
// nsJARURI
nsJARURI();
virtual ~nsJARURI();
static NS_METHOD
Create(nsISupports *aOuter, REFNSIID aIID, void **aResult);
nsresult Init();
nsresult FormatSpec(const char* entryPath, char* *result);
protected:
nsCOMPtr<nsIURI> mJARFile;
char *mJAREntry;
};
#endif // nsJARURI_h__