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Added the scripts git-svnup/git-svnrevert to utils/git-svn.

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It makes more sense to have git-svnup here than catting said file in the
documentation (where we should rather point users to this directory).
I included git-svnrevert as an additional gift to the community. I will update
the documentation in a second commit later today.

git-svnrevert takes in a git hash for a commit, looks up the svn revision for
said commit and then creates the normal git revert commit message with the one
liner message, except instead of saying

  Revert "<<<INSERT ONELINER HERE>>>"

  This reverts commit <<<INSERT GITHASH HERE>>>

It says:

  Revert "<<<INSERT ONELINER HERE>>>"

  This reverts commit r<<<INSERT SVN REVISION HERE>>>

so git hashes will not escape into our svn logs (which just look unseemly).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180587 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael Gottesman 2013-04-26 00:58:45 +00:00
parent 97265a4889
commit 19c3735262
2 changed files with 68 additions and 0 deletions
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53
utils/git-svn/git-svnrevert Executable file
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@ -0,0 +1,53 @@
#!/bin/bash
if [ $# -ne 1 ]; then
echo "Invalid arguments!"
echo "$0 <commit to revert>"
exit 1
fi
if [ -n "$(git status -uno -s --porcelain)" ]; then
echo "You have unstashed changes. Please stash and then revert."
git status -uno
exit 1
fi
COMMIT=$1
SVN_REVISION=$(git log -1 $COMMIT | grep git-svn-id | tr -s "@" " " | cut -f 4 -d " ")
if [ -z "$SVN_REVISION" ]; then
echo "Error! Given commit is not a git-svn revision!"
exit 1
fi
# Grab the one line message for our revert commit message.
ONE_LINE_MSG=$(git log --oneline $COMMIT -1 | cut -f2- -d " ")
# Revert the commit.
git revert --no-commit $COMMIT 2>/dev/null
if [ $? -ne 0 ]; then
echo "Error! Failed to revert commit $COMMIT. Resetting to head."
git reset --hard HEAD
exit 1
fi
# Create a template in our .git directory.
TEMPLATE="`git rev-parse --git-dir`/git-svn-revert-template"
cat > $TEMPLATE <<EOF
Revert "$ONE_LINE_MSG"
This reverts commit r$SVN_REVISION.
EOF
# Begin the commit but give our user an opportunity to edit it.
git commit --file="$TEMPLATE" --edit
if [ $? -ne 0 ]; then
echo "Error! Failed to commit reverting commit for commit $COMMIT. Reverting to head."
git reset --hard HEAD
rm -rf $TEMPLATE
exit 1
fi
rm -rf $TEMPLATE

15
utils/git-svn/git-svnup Executable file
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#!/bin/bash
if [ -n "`git status -uno -s --porcelain`" ]; then
echo "You have unstashed changes. Can not update repository..."
git status -uno
exit 1
fi
git fetch
OLD_BRANCH=$(git rev-parse --abbrev-ref HEAD)
git checkout master 2> /dev/null
git svn rebase -l
git checkout $OLD_BRANCH 2> /dev/null
exit 0