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From: Andrew Sayers <andrew-git@pileofstuff.org>
To: Sam Vilain <sam@vilain.net>
Cc: Nathan Gray <n8gray@n8gray.org>, Stephen Bash <bash@genarts.com>,
	Jonathan Nieder <jrnieder@gmail.com>, Jeff King <peff@peff.net>,
	git@vger.kernel.org, Sverre Rabbelier <srabbelier@gmail.com>,
	Dmitry Ivankov <divanorama@gmail.com>,
	Ramkumar Ramachandra <artagnon@gmail.com>,
	David Barr <davidbarr@google.com>
Subject: Re: Approaches to SVN to Git conversion
Date: Wed, 07 Mar 2012 20:28:58 +0000	[thread overview]
Message-ID: <4F57C50A.9010701@pileofstuff.org> (raw)
In-Reply-To: <4F5780F0.5080901@vilain.net>

On 07/03/12 15:38, Sam Vilain wrote:
> On 3/6/12 2:34 PM, Andrew Sayers wrote:
>> I've now added a bit of documentation and uploaded my code to github:
>> https://github.com/andrew-sayers/Proof-of-concept-History-Converter
>>
>> I haven't attached it here because the code isn't at a stage where it
>> would be useful to review line-by-line.  Comments are welcome if you
>> really want to though :)
> 
> I just took a look at your readme—did you consider writing the tool to
> work against an svn-fe import, rather than using SVN::Dump? Do you think
> it could be adjusted to be like that?

I did consider writing svn-branch-export.pl against a branch created by
svn-fe, but right now it doesn't provide enough information to do a good
job (e.g. copyfrom properties).  I understand that support is in the
works, but this project is more about getting a scrappy end-to-end
solution so we can see what the issues are (is there any demand for
DVCS-neutral SVN history export?  What are the hard cases and how do you
represent them?).  I'm keen to make sure that documentation and tests
are done in such a way that a future git-based exporter could use them
without relying on any of the actual code.

I also considered writing git-branch-import.pl against the raw svn-fe
output.  As well as the technical issues with this approach, I felt like
these were better tackled as orthogonal problems.  Producing an accurate
representation of the SVN history is a very different problem to
producing a user-friendly representation, and separating those concerns
seems like it will make life easier down the line.  For example, a
user-friendly representation might convert svn:ignore properties to
.gitignore files, but that would make bidirection hard to implement
without an accurate representation in the middle.

	- Andrew

  reply	other threads:[~2012-03-07 20:29 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-03-03 12:27 [RFC] "Remote helper for Subversion" project David Barr
2012-03-03 12:41 ` David Barr
2012-03-04  7:54   ` Jonathan Nieder
2012-03-04 10:37     ` David Barr
2012-03-04 13:36       ` Andrew Sayers
2012-03-05 15:27         ` Approaches to SVN to Git conversion (was: Re: [RFC] "Remote helper for Subversion" project) Stephen Bash
2012-03-05 23:27           ` Approaches to SVN to Git conversion Andrew Sayers
2012-03-06 14:36             ` Stephen Bash
2012-03-06 19:29           ` Approaches to SVN to Git conversion (was: Re: [RFC] "Remote helper for Subversion" project) Nathan Gray
2012-03-06 20:35             ` Stephen Bash
2012-03-06 23:59               ` [spf:guess] " Sam Vilain
2012-03-07 22:06                 ` Andrew Sayers
2012-03-07 23:15                   ` [spf:guess,iffy] " Sam Vilain
2012-03-08 20:51                     ` Andrew Sayers
2012-03-06 22:34             ` Approaches to SVN to Git conversion Andrew Sayers
2012-03-07 15:38               ` Sam Vilain
2012-03-07 20:28                 ` Andrew Sayers [this message]
2012-03-07 22:33               ` Phil Hord
2012-03-07 23:08               ` Nathan Gray
2012-03-07 23:32                 ` Andrew Sayers
2012-03-04 16:23       ` [RFC] "Remote helper for Subversion" project Jonathan Nieder
2012-03-27  3:58     ` Ramkumar Ramachandra

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