xen-orchestra/scripts/import-packages

#!/bin/sh

set -eu

if [ $# -eq 0 ]
then
  echo "$0 <repository url>..."
  exit
fi

# Import repositories into this mono-repo.
#
# For each repository:
#
# 1. import all branches and tags as <repository>/*
# 2. rewrite history, moving all files into packages/<repository>
# 3. merge and delete <repository>/master
for url
do
  pkg=$(basename "$url" .git)
  if [ -d "packages/$pkg" ]
  then
    continue
  fi

  git remote add "$pkg" "$url"
  git fetch --no-tags "$pkg" \
    "refs/heads/*:refs/heads/$pkg/*" \
    "refs/tags/*:refs/tags/$pkg/*"
  git remote rm "$pkg"

  git filter-branch -f --index-filter '
    git ls-files -s | \
      sed "s%\t\"*%&packages/'"$pkg"'/%" | \
      GIT_INDEX_FILE=$GIT_INDEX_FILE.new \
      git update-index --index-info && \
      if [ -f "$GIT_INDEX_FILE.new" ]; then \
        mv "$GIT_INDEX_FILE.new" "$GIT_INDEX_FILE"; \
      fi
  ' --tag-name-filter 'cat' -- --branches="$pkg/*"

  git merge --allow-unrelated-histories "$pkg/master"
  git branch -d "$pkg/master"
done