git-migration/migrate.sh

   1 #!/bin/sh
   2
   3 # Verbose
   4 set -x
   5
   6 # Exit on failure
   7 set -e
   8
   9 if [ ! -d pma-svn-git ] ; then
  10     # Init repository on first run
  11     mkdir pma-svn-git
  12     cd pma-svn-git
  13     git svn init -s --no-metadata https://phpmyadmin.svn.sourceforge.net/svnroot/phpmyadmin
  14     git config svn.authorsfile ../svn2git-authors
  15 else
  16     cd pma-svn-git
  17 fi
  18
  19 # Fetch revisions
  20 git svn fetch --fetch-all
  21
  22 # Back to top level directory
  23 cd ..
  24
  25 # Create working copy of the clone (we will modify it)
  26 rm -rf pma-svn-git-work
  27 cp -a pma-svn-git pma-svn-git-work
  28
  29 # Make local tags and branches
  30 cd pma-svn-git-work
  31
  32 # Proper email address
  33 git config --add user.email michal@cihar.com
  34
  35 # Tags
  36 git branch -r | sed -rne 's, *tags/([^@]+)$,\1,p' | grep 'RELEASE\|STABLE\|TESTING' | while read tag ; do
  37     git tag -a $tag -m "Imported SVN tag for $tag" "tags/${tag}^"
  38 done
  39
  40 # Branches
  41 git branch -r | grep -v ' *tags/' | grep 'QA_[0-9_]*$\|MAINT_[0-9_]*$' | while read branch ; do
  42     git branch $branch $branch
  43 done
  44
  45 # First connect orphan MAINT to QA
  46 for branch in `git branch | grep MAINT_` ; do
  47     masterbranch=`echo $branch | sed 's/MAINT_/QA_/; s/_[0-9]*$//'`
  48     olddate="`git log $branch | grep '^Date' | tail -n 1 | sed 's/Date: *//'`"
  49     masterdate="`git log $masterbranch | grep '^Date' | tail -n 1 | sed 's/Date: *//'`"
  50     echo "$branch: $olddate / $masterdate"
  51     if [ "$masterdate" = "$olddate" ] ; then
  52         continue
  53     fi
  54     echo "Branch $branch is outdated!"
  55     oldtail="`git log $branch | grep '^commit' | tail -n 1 | sed 's/commit *//'`"
  56     echo $masterbranch
  57     masterpoint="`git log --before="$olddate" $masterbranch | grep '^commit' | head -n 1 | sed 's/commit *//'`"
  58     echo "Will point $oldtail to $masterpoint"
  59     git checkout $branch
  60     git filter-branch -f --tag-name-filter cat --parent-filter "test \$GIT_COMMIT = $oldtail && echo '-p $masterpoint' || cat" HEAD
  61     git checkout master
  62 done
  63
  64 # Now connect orphan QA to master
  65 for branch in `git branch | grep QA_` ; do
  66     olddate="`git log $branch | grep '^Date' | tail -n 1 | sed 's/Date: *//'`"
  67     echo "$branch: $olddate"
  68     if [ "Thu May 3 17:25:09 2001 +0000" = "$olddate" ] ; then
  69         continue
  70     fi
  71     echo "Branch is outdated!"
  72     oldtail="`git log $branch | grep '^commit' | tail -n 1 | sed 's/commit *//'`"
  73     masterpoint="`git log --before="$olddate" master | grep '^commit' | head -n 1 | sed 's/commit *//'`"
  74     echo "Will point $oldtail to $masterpoint"
  75     childfilter=`echo $branch | sed 's/QA_/MAINT_/'`
  76     git filter-branch -f --tag-name-filter cat --parent-filter "test \$GIT_COMMIT = $oldtail && echo '-p $masterpoint' || cat" -- --all
  77 done
  78
  79 # Back to top level directory
  80 cd ..
  81
  82 # Prepare separate repositories
  83 rm -rf repos
  84 mkdir repos
  85 cd repos
  86
  87 # Clone and filter all top level dirs
  88 for repo in data  history  localized_docs  phpMyAdmin  planet  scripts  themes  website ; do
  89     git clone ../pma-svn-git-work $repo
  90     cd $repo
  91     if [ $repo = phpMyAdmin -o $repo = themes ] ; then
  92         for branch in `git branch -r | grep 'QA_[0-9_]*$\|MAINT_[0-9_]*$'` ; do
  93             git branch `basename $branch` $branch
  94         done
  95     fi
  96     git config --add user.email michal@cihar.com
  97     git filter-branch --subdirectory-filter $repo --tag-name-filter cat -- --all
  98     cd ..
  99 done