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Re: [PATCH 03/11] vcs-svn: Read the preimage while applying deltas

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From: Jonathan Nieder
Subject: Re: [PATCH 03/11] vcs-svn: Read the preimage while applying deltas
Date: Thursday, October 14, 2010 - 4:40 pm

Sam Vilain wrote:


Ah, my bad.  唐鳳, as part of an attempt to natively support fetching
from and pushing to svn repositories, some contributors to the git
project are working on an svndiff0 applier.  If you're interested in
reliving old memories, please feel free to look it over (especially
the test cases).  Thoughts, simplifications, bug reports, improvements
welcome.

http://thread.gmane.org/gmane.comp.version-control.git/151086/focus=158913

Anyone wanting to try it can check out

	git://repo.or.cz/git/jrn.git svn-da

and use the test-svn-fe command:

	make test-svn-fe
	./test-svn-fe -d <preimage> <delta> <delta length>

or the tests:

	make
	cd t && sh t9011-svn-da.sh -v -i

The preimage or delta argument can be /dev/stdin for use in a pipeline.

Thanks for your work on svk and pugs!
Jonathan
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Messages in current thread:
[PATCH 0/8] Resurrect rr/svn-export, Ramkumar Ramachandra, (Thu Jul 15, 9:22 am)
[PATCH 1/8] Export parse_date_basic() to convert a date st ..., Ramkumar Ramachandra, (Thu Jul 15, 9:22 am)
[PATCH 2/8] Introduce vcs-svn lib, Ramkumar Ramachandra, (Thu Jul 15, 9:22 am)
[PATCH 3/8] Add memory pool library, Ramkumar Ramachandra, (Thu Jul 15, 9:22 am)
[PATCH 4/8] Add treap implementation, Ramkumar Ramachandra, (Thu Jul 15, 9:23 am)
[PATCH 5/8] Add string-specific memory pool, Ramkumar Ramachandra, (Thu Jul 15, 9:23 am)
[PATCH 6/8] Add stream helper library, Ramkumar Ramachandra, (Thu Jul 15, 9:23 am)
[PATCH 7/8] Add infrastructure to write revisions in fast- ..., Ramkumar Ramachandra, (Thu Jul 15, 9:23 am)
[PATCH 8/8] Add SVN dump parser, Ramkumar Ramachandra, (Thu Jul 15, 9:23 am)
Re: [PATCH 1/8] Export parse_date_basic() to convert a dat ..., Jonathan Nieder, (Thu Jul 15, 10:25 am)
Re: [PATCH 2/8] Introduce vcs-svn lib, Jonathan Nieder, (Thu Jul 15, 10:46 am)
Re: [PATCH 3/8] Add memory pool library, Jonathan Nieder, (Thu Jul 15, 11:57 am)
Re: [PATCH 4/8] Add treap implementation, Jonathan Nieder, (Thu Jul 15, 12:09 pm)
Re: [PATCH 3/8] Add memory pool library, Ramkumar Ramachandra, (Thu Jul 15, 12:12 pm)
Re: [PATCH 2/8] Introduce vcs-svn lib, Ramkumar Ramachandra, (Thu Jul 15, 12:15 pm)
Re: [PATCH 4/8] Add treap implementation, Ramkumar Ramachandra, (Thu Jul 15, 12:18 pm)
Re: [PATCH 6/8] Add stream helper library, Jonathan Nieder, (Thu Jul 15, 12:19 pm)
Re: [PATCH 7/8] Add infrastructure to write revisions in f ..., Jonathan Nieder, (Thu Jul 15, 12:28 pm)
Re: [PATCH 8/8] Add SVN dump parser, Jonathan Nieder, (Thu Jul 15, 12:52 pm)
Re: [PATCH 8/8] Add SVN dump parser, Jonathan Nieder, (Thu Jul 15, 1:04 pm)
Re: [PATCH 1/8] Export parse_date_basic() to convert a dat ..., Junio C Hamano, (Thu Jul 15, 3:54 pm)
Re: [PATCH 0/8] Resurrect rr/svn-export, Jonathan Nieder, (Fri Jul 16, 3:13 am)
[PATCH 3/9] Add memory pool library, Jonathan Nieder, (Fri Jul 16, 3:16 am)
[PATCH 4/9] Add treap implementation, Jonathan Nieder, (Fri Jul 16, 3:23 am)
Re: [PATCH 4/9] Add treap implementation, Jonathan Nieder, (Fri Jul 16, 11:26 am)
[PATCH 0/10] rr/svn-export reroll, Jonathan Nieder, (Mon Aug 9, 2:57 pm)
[PATCH 01/10] Export parse_date_basic() to convert a date ..., Jonathan Nieder, (Mon Aug 9, 3:01 pm)
[PATCH 02/10] Introduce vcs-svn lib, Jonathan Nieder, (Mon Aug 9, 3:04 pm)
[PATCH 03/10] Add memory pool library, Jonathan Nieder, (Mon Aug 9, 3:11 pm)
[PATCH 04/10] Add treap implementation, Jonathan Nieder, (Mon Aug 9, 3:17 pm)
[PATCH 05/10] Add string-specific memory pool, Jonathan Nieder, (Mon Aug 9, 3:34 pm)
[PATCH 06/10] Add stream helper library, Jonathan Nieder, (Mon Aug 9, 3:39 pm)
[PATCH 07/10] Infrastructure to write revisions in fast-ex ..., Jonathan Nieder, (Mon Aug 9, 3:48 pm)
[PATCH 08/10] SVN dump parser, Jonathan Nieder, (Mon Aug 9, 3:55 pm)
PATCH 09/10] Update svn-fe manual, Jonathan Nieder, (Mon Aug 9, 3:55 pm)
[PATCH 10/10] svn-fe manual: Clarify warning about deltas ..., Jonathan Nieder, (Mon Aug 9, 3:58 pm)
Re: [PATCH 0/10] rr/svn-export reroll, Ramkumar Ramachandra, (Tue Aug 10, 5:53 am)
Re: [PATCH 0/10] rr/svn-export reroll, Jonathan Nieder, (Tue Aug 10, 6:53 pm)
Re: [PATCH 05/10] Add string-specific memory pool, Junio C Hamano, (Thu Aug 12, 10:22 am)
Re: [PATCH 04/10] Add treap implementation, Junio C Hamano, (Thu Aug 12, 10:22 am)
Re: [PATCH 08/10] SVN dump parser, Junio C Hamano, (Thu Aug 12, 10:22 am)
Re: [PATCH 05/10] Add string-specific memory pool, Jonathan Nieder, (Thu Aug 12, 2:30 pm)
Re: [PATCH 04/10] Add treap implementation, Jonathan Nieder, (Thu Aug 12, 3:02 pm)
Re: [PATCH 04/10] Add treap implementation, Jonathan Nieder, (Thu Aug 12, 3:11 pm)
Re: [PATCH 04/10] Add treap implementation, Junio C Hamano, (Thu Aug 12, 3:44 pm)
[PATCH/WIP 00/16] svn delta applier, Jonathan Nieder, (Sun Oct 10, 7:34 pm)
[PATCH 01/16] vcs-svn: Eliminate global byte_buffer[] array, Jonathan Nieder, (Sun Oct 10, 7:37 pm)
[PATCH 03/16] vcs-svn: Collect line_buffer data in a struct, Jonathan Nieder, (Sun Oct 10, 7:39 pm)
[PATCH 04/16] vcs-svn: Teach line_buffer to handle multipl ..., Jonathan Nieder, (Sun Oct 10, 7:41 pm)
[PATCH 05/16] vcs-svn: Make buffer_skip_bytes() report par ..., Jonathan Nieder, (Sun Oct 10, 7:44 pm)
[PATCH 06/16] vcs-svn: Improve support for reading large files, Jonathan Nieder, (Sun Oct 10, 7:46 pm)
[PATCH 07/16] vcs-svn: Add binary-safe read() function, Jonathan Nieder, (Sun Oct 10, 7:47 pm)
[PATCH 08/16] vcs-svn: Let callers peek ahead to find stre ..., Jonathan Nieder, (Sun Oct 10, 7:47 pm)
[PATCH 09/16] vcs-svn: Allow input errors to be detected early, Jonathan Nieder, (Sun Oct 10, 7:51 pm)
[PATCH 10/16] vcs-svn: Allow character-oriented input, Jonathan Nieder, (Sun Oct 10, 7:52 pm)
[PATCH 11/16] vcs-svn: Add code to maintain a sliding view ..., Jonathan Nieder, (Sun Oct 10, 7:53 pm)
[PATCH 12/16] vcs-svn: Learn to parse variable-length integers, Jonathan Nieder, (Sun Oct 10, 7:55 pm)
[PATCH 13/16] vcs-svn: Learn to check for SVN\0 magic, Jonathan Nieder, (Sun Oct 10, 7:58 pm)
[PATCH 14/16] compat: helper for detecting unsigned overflow, Jonathan Nieder, (Sun Oct 10, 7:59 pm)
[PATCH 15/16] t9010 (svn-fe): Eliminate dependency on svn ..., Jonathan Nieder, (Sun Oct 10, 8:00 pm)
[PATCH 02/16] vcs-svn: Replace buffer_read_string() memory ..., Jonathan Nieder, (Sun Oct 10, 8:11 pm)
[PATCH/RFC 16'/16] vcs-svn: Add svn delta parser, Jonathan Nieder, (Sun Oct 10, 9:01 pm)
[PATCH/RFC 0/11] Building up the delta parser, Jonathan Nieder, (Wed Oct 13, 2:17 am)
[PATCH 01/11] fixup! vcs-svn: Learn to parse variable-leng ..., Jonathan Nieder, (Wed Oct 13, 2:19 am)
[PATCH 02/11] vcs-svn: Skeleton of an svn delta parser, Jonathan Nieder, (Wed Oct 13, 2:21 am)
[PATCH 03/11] vcs-svn: Read the preimage while applying deltas, Jonathan Nieder, (Wed Oct 13, 2:30 am)
[PATCH 04/11] vcs-svn: Read inline data from deltas, Jonathan Nieder, (Wed Oct 13, 2:35 am)
[PATCH 05/11] vcs-svn: Read instructions from deltas, Jonathan Nieder, (Wed Oct 13, 2:38 am)
[PATCH 06/11] vcs-svn: Implement copyfrom_data delta instr ..., Jonathan Nieder, (Wed Oct 13, 2:39 am)
[PATCH 07/11] vcs-svn: Check declared number of output bytes, Jonathan Nieder, (Wed Oct 13, 2:41 am)
[PATCH 08/11] vcs-svn: Reject deltas that do not consume a ..., Jonathan Nieder, (Wed Oct 13, 2:48 am)
[PATCH 09/11] vcs-svn: Let deltas use data from postimage, Jonathan Nieder, (Wed Oct 13, 2:50 am)
[PATCH 10/11] vcs-svn: Reject deltas that read past end of ..., Jonathan Nieder, (Wed Oct 13, 2:53 am)
[PATCH 11/11] vcs-svn: Allow deltas to copy from preimage, Jonathan Nieder, (Wed Oct 13, 2:58 am)
[PATCH 11/11] vcs-svn: Allow deltas to copy from preimage, Jonathan Nieder, (Wed Oct 13, 3:00 am)
Re: [PATCH 03/11] vcs-svn: Read the preimage while applyin ..., Sam Vilain, (Thu Oct 14, 2:45 pm)
Re: [PATCH 03/11] vcs-svn: Read the preimage while applyin ..., Jonathan Nieder, (Thu Oct 14, 4:40 pm)
Re: [PATCH/RFC 0/11] Building up the delta parser, Ramkumar Ramachandra, (Mon Oct 18, 10:00 am)
Re: [PATCH/RFC 0/11] Building up the delta parser, Jonathan Nieder, (Mon Oct 18, 10:03 am)