github-install.sh

github-install.sh

#!/bin/bash
#
# This script downloads the master branch of some GitHub repository and installs it in current directory.

GITHUB_REPO=${1:-Bricks}
GITHUB_USER=${2:-KnowSheet}
GITHUB_BRANCH=${3:-master}

TMPDIR=tmp

URL=https://github.com/$GITHUB_USER/$GITHUB_REPO/archive/$GITHUB_BRANCH
NAME=$GITHUB_REPO-$GITHUB_BRANCH

mkdir -p $TMPDIR
( 
  cd $TMPDIR;
  rm -rf $NAME $NAME.zip $GITHUB_REPO;
  echo -n "github.com/$GITHUB_USER/$GITHUB_REPO@$GITHUB_BRANCH: "
  echo -n "download..."
  curl -s -L $URL.zip >$NAME.zip || (echo -e "\b\b\b failed."; exit 1);
  echo -ne "\b\b\b, unpack..."
  unzip -q $NAME.zip || (echo -e "\b\b\b failed."; exit 1);
  rm $NAME.zip;
  mv $NAME $GITHUB_REPO
  echo -ne "\b\b\b, install: "
)

if [ -d $GITHUB_REPO ] ; then
  if diff -r $GITHUB_REPO $TMPDIR/$GITHUB_REPO ; then
    echo "Up to date."
  else
    echo "Conflict, please reinstall."
    echo "mv ${GITHUB_REPO} .$GITHUB_REPO."`date +%Y%m%d-%H%M%S`", then re-run the same command should be safe."
    exit 1
  fi
else
  mv $TMPDIR/$GITHUB_REPO .
  echo "Installed."
fi