A script for migrating a Mercurial repository to a new git one

hg-to-git.sh

#!/bin/bash
function abort() {
  echo "ERROR: $1"
  echo ""
  echo "USAGE: $0 /path/to/hg/repo /path/to/new/repo"
	exit 1
}

[ $# -eq 2 ] || abort "Invalid parameters count"
[ -d $1 ] || abort "$1 should be an existing hg repository"
[ -d $1/.hg ] || abort "$1 should be an existing hg repository ($1/.hg must be a directory)"
[ -d $2 ] && abort "$2 should not exist"

SOURCE=$(cd "$1" && pwd)
mkdir -p "$2" && cd "$2"
TARGET=$(pwd)
git clone git://repo.or.cz/fast-export.git "$TARGET"
rm -rf .git .gitignore
git init
./hg-fast-export.sh -r "$SOURCE"

for branch in $(cd "$SOURCE" && hg branches --closed | grep \(closed\) | cut -f1 -d' ')
do
	git checkout "$branch" && git tag "$branch" && git checkout master && git branch -D "$branch"
done

git reset . && git checkout . && git clean -f