Re: git fast-export | git fast-import doesn't work

From: Johannes Schindelin <johannes.schindelin@gmx.de>
Date: Nov 26, 2008, 17:08 UTC
Message-ID: <alpine.DEB.1.00.0811261804550.30769@pacific.mpi-cbg.de>
In-Reply-To: <492D7CF5.1020202@drmicha.warpmail.net>

Hi,

On Wed, 26 Nov 2008, Michael J Gruber wrote:

> Looking at the source I suspect that fast-export fails to denote 
> parenthood in the case of yet unmarked parents (last for-loop of 
> handle_commit() in builtin_fast_export.c). But I don't really know that 
> code at all.

I strongly doubt so. Noticed the use of has_unshown_parent(commit) in both cases before calling handle_commit()?

In any case, here is a script that I wrote _long_ time ago, to be able to reconstruct history from the output of "git rev-list --all --parents". Maybe this helps you in reconstructing something that is handled incorrectly by fast-export | fast-import, but is lighter than a full-blown repository.

-- snip -- #!/bin/sh

# Given the output of git-rev-list, this reconstructs the DAG of the history

i=0
tac | while read rev parents; do
        let i=$i+1
        echo $i > a1
        git add a1
        tree=$(git write-tree)
        parents="$(for parent in $parents
                do
                        echo -n "-p $(git rev-parse sp-$parent) "
                done)"
        commit=$(echo "$rev $i" | git commit-tree $tree $parents)
        git tag sp-$rev $commit
done
-- snap --

Ciao, Dscho

--

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