Git post-merge & post-checkout hook for sync changed files timestamps with last commit time (Linux, FreeBSD, Mac OS)

Git hook sync modification time to last commit time

Git hook post-merge and post-checkout for sync modification time to last commit time.

You can download scripts manually and install them yourself, or you can install it with command

> curl -s https://gist.githubusercontent.com/phpdude/9464925/raw/install | sh

This command will download post-merge script, chmod it, and create post-checkout symlink to post-merge hook.

You can also start this script manually with environment variable $GIT_MERGE_LIMIT=100 to updated timestamp of last 100 commits for example.

  export GIT_MERGE_LIMIT=100
  /path/to/my/project/.git/hooks/post-merge
  

install

#!/bin/sh

GIT="/usr/bin/env git"
CURL="/usr/bin/env curl"
SCRIPT="https://gist.githubusercontent.com/phpdude/9464925/raw/post-merge"
GITHOME=`$GIT rev-parse --show-toplevel`

if [ -z "$GITHOME" ]; then
  exit
fi

echo "Changind current dir to Git hooks folder"
cd "$GITHOME"/.git/hooks/ || exit

echo "Downloading post-merge hook"
($CURL $SCRIPT -s > post-merge) || exit

echo "Installing post-merge hook and post-checkout"
chmod +x post-merge
ln -fs post-merge post-checkout

post-merge

#!/bin/sh
OS=${OS:-`uname`}

if   [ "$OS" = 'Linux' ]
then
    update_file_timestamp() {
        file_time=`git log --no-merges --format=%ai "$1" | head -n 1`
        touch -d "$file_time" "$1"
    }
elif [ "$OS" = 'FreeBSD' ] || [ "$OS" = 'Darwin' ];
then
    update_file_timestamp() {
        file_time=`date -r "$(git log --no-merges --format=%at "$1" | head -n 1)" '+%Y%m%d%H%M.%S'`
        touch -h -t "$file_time" "$1"
    }
else
    echo "timestamp changing not implemented" >&2
    exit 1
fi

LIMIT="-${GIT_MERGE_LIMIT:-1}"
for file in `git log --no-merges --no-commit-id --pretty="format:" --name-only $LIMIT`
do
    if [ -f "$file" ]; then
        update_file_timestamp "$file"
    fi
done