git-notify.sh

#!/bin/bash

function run {
# how we want to extract the variables from the commit message.
format_name="--format=%cn"
format_when="--format=%cr"
format_summary="--format=%s"
format_body="--format=%b"


# what repo do we want to watch (default to origin/master)
if [ -z "$1" ]; then
  repo="origin"
else
  repo="$1"
fi

if [ -z "$2" ]; then
    branch="master"
else
    branch="$2"
fi

latest_revision="none"

cd $dir

# loop forever, need to kill the process.
while [ 1 ]; do

    # get the latest revision SHA.
    git fetch $repo
    current_revision=$(git rev-parse $repo/$branch)

    # if we haven't seen that one yet, then we know there's new stuff.
    if [ $latest_revision != $current_revision ]; then

        # mark the newest revision as seen.
        latest_revision=$current_revision

        # extract the details from the log.
        commit_name=`git log -1 $format_name $latest_revision`
        commit_when=`git log -1 $format_when $latest_revision`
        commit_summary=`git log -1 $format_summary $latest_revision`
        commit_body=`git log -1 $format_body $latest_revision`

        # notify the user of the commit.
        summary="$commit_name committed to $(pwd | sed s,$HOME,~,) ($repo/$branch) $commit_when!"
        body="$commit_summary\n\n$commit_body"
        $(notify-send -a git-notify "$summary" "$body")

    fi
    sleep 60
done
}

if [ -z "$1" ]; then
    echo "Error: Must specify a directory" >&2
    exit 1
else
    dir="$1"
fi

set -e
cd $dir
set +e

LOG_FILE=git-notify.log

exec > >(tee -a ${LOG_FILE} )
exec 2> >(tee -a ${LOG_FILE} >&2)

if git rev-parse --git-dir > /dev/null 2>&1; then
  (run $2 $3 &)
else
  echo "Error: not a git repo"
fi