ghfw-release.sh

#!/bin/sh

force=
while test $# -gt 0
do
  case "$1" in
  -f|--force)
    force=t
    shift
    ;;
  *)
    break
  esac
done

test -z "$force" && {
  die () {
    echo "$*" >&2
    echo "If that is okay, please call '$0 -f'" >&2
    exit 1
  }

  (cd git &&
   git update-index --refresh &&
   git diff-files --quiet &&
   git diff-index --cached HEAD --) ||
  die "Git submodule has dirty files"
  (git update-index --refresh &&
   git diff-files --quiet &&
   git diff-index --cached HEAD --) ||
  die "msysGit super project not up-to-date"
}

die () {
  echo $* >&2
  exit 1
}

git show-ref --verify --quiet refs/heads/PortableGit ||
git branch PortableGit origin/PortableGit ||
die "Couldn't find or create PortableGit branch"

PORTABLEGIT_REF=$(git rev-parse PortableGit)
test "$PORTABLEGIT_REF" == $(git rev-parse origin/PortableGit) ||
die "Local PortableGit branch doesn't match origin/PortableGit"

echo "Building git..."
cd /git &&
make install >/dev/null &&
(cd ./contrib/subtree && make install INSTALL=/bin/install prefix=) ||
die "Failed to build git"

echo "Building Portable Git..."
# This puts the Portable Git release into /tmp/WinGit
cd / &&
NO_SFX=1 sh ./share/WinGit/portable-release.sh ghfw >/dev/null &&
mv "$HOME/PortableGit-ghfw.7z" /tmp/WinGit/PortableGit.7z ||
die "Couldn't build PortableGit"

echo "Committing to the PortableGit branch..."
GIT_DIR=/.git
GIT_INDEX_FILE=/tmp/ghfw.index
export GIT_DIR GIT_INDEX_FILE
rm -f $GIT_INDEX_FILE

cd /tmp/WinGit &&
mv /.git/hooks/post-checkout /.git/hooks/post-checkout.nope &&
git add . >/dev/null &&
for file in .gitattributes .gitignore
do
  git checkout PortableGit $file ||
  die "Couldn't check out $file from the PortableGit branch"
done &&
mv /.git/hooks/post-checkout.nope /.git/hooks/post-checkout ||
die "Failed to add files to index"

DEVEL_COMMIT=$(git rev-parse HEAD)
test $? ||
die "Couldn't determine HEAD commit"

NEW_TREE=$(git write-tree)
test $? ||
die "Couldn't write tree"

NEW_COMMIT=$(echo "Autogenerated PortableGit for $DEVEL_COMMIT" | git commit-tree $NEW_TREE -p $PORTABLEGIT_REF)
test $? ||
die "Couldn't create new commit"

git update-ref refs/heads/PortableGit $NEW_COMMIT $PORTABLEGIT_REF ||
die "Couldn't update the PortableGit branch"

echo
echo "Created commit $NEW_COMMIT on the PortableGit branch"
git log -1 PortableGit