Script to import a subdirectory from a git repository to another git repository.

git-import-to-repo.bash

#!/bin/bash

#Script based on http://gbayer.com/development/moving-files-from-one-git-repository-to-another-preserving-history/

function show_help
{
  echo "Usage: git-import-to-repo SOURCE_REPO_PATH IMPORT_PATH DESTINY_REPO_URL"
}

echo "git-import-to-repo script v0.1"

source_repo_path=$1
import_path=$2
destiny_repo_url=$3

if [ ! -d "$source_repo_path" ]; then
  echo "'$source_repo_path' is not a valid path."
  show_help
  exit 1
fi

cd $source_repo_path

if [ ! -d "$import_path" ]; then
  echo "'$import_path' is not a valid path."
  show_help
  exit 1
fi

echo "Preparing to import files from '$import_path'..."

git remote rm origin
git filter-branch --subdirectory-filter $import_path -- --all

cd ..

echo "Preparing destiny $destiny..."

git clone $destiny_repo_url destiny_repo

cd destiny_repo

git remote add repo_source $source_repo_path
git pull repo_source master --allow-unrelated-histories
git remote rm repo_source
git push origin master

echo "Done!"

cd ..
rm -rf destiny_repo