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#!/bin/bash | |
# This script takes a remote repository and merges it into | |
# the current one as a subdirectory | |
set -e | |
if [ -z "$1" ] | |
then | |
echo "Usage:" | |
echo " ./mergeRepo.sh <repository> [name] [branch]" | |
echo " <repository> remote repository to merge" | |
echo " [name] sub-directory name (optional)" | |
echo " [branch] repository branch to merge (optional)" | |
exit | |
fi | |
REPO_REMOTE="$1" | |
REPO_NAME="$2" | |
REPO_BRANCH="$3" | |
# infer a name if one is not provided | |
if [ -z "$REPO_NAME" ] | |
then | |
REPO_NAME="${REPO_REMOTE##*/}" | |
REPO_NAME="${REPO_NAME%.*}" | |
fi | |
if [ -z "$REPO_BRANCH" ] | |
then | |
REPO_BRANCH="master" | |
fi | |
REPO_DIR_TMP="$(mktemp -d -t "${REPO_NAME}.XXXX")" | |
echo "REPO REMOTE: $REPO_REMOTE" | |
echo "REPO NAME: $REPO_NAME" | |
echo "REPO TMP DIR: $REPO_DIR_TMP" | |
echo "REPO BRANCH: $REPO_BRANCH" | |
echo | |
read -p "Press <Enter> to continue" | |
# clone other repo | |
git clone "$REPO_REMOTE" "$REPO_DIR_TMP" --branch $REPO_BRANCH | |
# rewrite the entire history into sub-directory | |
export REPO_NAME | |
( | |
cd $REPO_DIR_TMP && | |
git filter-branch -f --prune-empty --tree-filter ' | |
mkdir -p "${REPO_NAME}_tmp" | |
git ls-tree --name-only $GIT_COMMIT | xargs -I{} mv {} "${REPO_NAME}_tmp" | |
mv "${REPO_NAME}_tmp" "$REPO_NAME" | |
' | |
) | |
# merge the rewritten repo | |
git remote add "$REPO_NAME" "$REPO_DIR_TMP" | |
git fetch "$REPO_NAME" | |
# if you're running an older version of git, remove --allow-unrelated-histories | |
git merge --allow-unrelated-histories "$REPO_NAME/$REPO_BRANCH" | |
# delete the rewritten repo | |
rm -rf "$REPO_DIR_TMP" | |
git remote rm "$REPO_NAME" |
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