.update

#!/bin/bash
#=========================================================================
# .update [options]
#=========================================================================
#
#  -h  Display this message
#  -v  Verbose mode
#
# Update the current public release from the correct branch in the
# labs repo.
#
# Author : Christopher Batten
# Date   : August 28, 2015

#-------------------------------------------------------------------------
# Command line parsing
#-------------------------------------------------------------------------

function usage
{
  echo ""
  sed -n '3p' $0 | sed -e 's/#//'
  sed -n '5,/^$/p' $0 | sed -e 's/#//'
  exit 1
}

verbose=no
while getopts "hv" OPTION; do
  case $OPTION in
    v)   verbose=yes ;;
    h|?) usage ;;
  esac
done

#-------------------------------------------------------------------------
# source branch
#-------------------------------------------------------------------------

src_branch="tut3-pymtl"

#-------------------------------------------------------------------------
# main
#-------------------------------------------------------------------------

echo ""

# Make sure working directory is not dirty

echo " - make sure working directory not dirty"

# if ( git diff --quiet ); then
#   echo ""
#   echo " ERROR: Dirty working directory"
#   echo ""
#   exit 1
# fi

# Make sure script is run in root of repo

echo " - make sure script is run in root of repo"

if [[ ! -f ".update" ]]; then
  echo ""
  echo " ERROR: Must run this script in root of repo"
  echo ""
  exit 1
fi

# Save current path

echo " - save current path"

topdir=${PWD}

# Remove all content

echo " - remove all content"

rm -rf .gitignore
rm -rf .travis.yml
rm -rf *

# Get last commit

echo " - get last commit"

last_commit=$(head -1 .changelog | cut -f1 -d' ')

# Clone labs repo

echo " - clone labs repo"

git clone git@github.com:cornell-ece4750/ece4750-labs \
  --branch ${src_branch} upstream

# Create changelog

echo " - create changelog"

git --git-dir=${topdir}/upstream/.git \
  log --oneline --no-color > .changelog

# Create commit message

echo " - create commit message"

echo "automated update"  > .commitmsg
echo ""                 >> .commitmsg

git --git-dir=${topdir}/upstream/.git \
  log --oneline --no-color ${last_commit}..HEAD >> .commitmsg

# Remove upstream git repo

echo " - remove upstream git repo"

rm -rf ${topdir}/upstream/.git

# Move all content from upstream

echo " - move all content from upstream"

shopt -s dotglob
mv ${topdir}/upstream/* ${topdir}

# Remove upstream

echo " - remove upstream"

rm -rf ${topdir}/upstream

# Commit changes

echo " - commit changes"

git add .
git rm --cached .commitmsg
git commit --file=.commitmsg
rm -rf .commitmsg

# exit

echo ""
exit 0