Github review puller git tool

git-ghrw

#!/bin/bash


USER=$1
BRANCH=$2

function show_help {
    echo <<EOF
Summary:

    Checkout a Github user's branch locally for review.

Usage:

    git-ghrw USERNAME BRANCH

This script first checks out the master branch, updates it by pulling
in `upstream/master`, then creates a new branch there named
"USERNAME-BRANCH".

Then it pulls in BRANCH from the Github user's fork, i.e. it executes:

    git pull -q https://github.com/USERNAME/REPO_NAME BRANCH

The REPO_NAME is detected from the current directory.
EOF

}

if [ -z $USER ]; then
    echo "Please provide a GitHub username - changes from their fork will be pulled in"
    show_help
    exit 1
fi

if [ -z $BRANCH ]; then
    echo "Please provide the branch of the user to pull in"
    show_help
    exit 1
fi

set -e

GIT_DIR=$(git rev-parse --show-toplevel)
REPO_NAME=$(basename $GIT_DIR)
LOCAL_BRANCH=${USER}-${BRANCH}

cd $GIT_DIR
echo "Pulling upstream/master -> master and creating new branch $LOCAL_BRANCH."
git checkout -q master && git pull -q upstream master && git checkout -q -B $LOCAL_BRANCH
echo "Pulling https://github.com/$USER/$REPO_NAME:$BRANCH"
git pull -q https://github.com/$USER/$REPO_NAME $BRANCH