mcaskill · July 28, 2021 13:59
diff --git a/composer.sh b/composer.sh
 #
 # Alias of `composer` command that, if Composer's installed.json is present, checks
 # for local changes in dependencies and backs-up the composer.json, composer.lock,
 # and vendor directory before executing install, reinstall, or update commands.
 #
 # Useful if you often need to modify the code of your dependencies and they are
 # installed from source.
 #
 # Version: 1.1.0
 # License: MIT
 # Author: Chauncey McAskill
 #
 # Note:
 #    - This code has only been tested on Unix systems.
 #    - Change the `bin` variable to where the `composer` binary is located.
 #    - Change the `bck` variable to where you want to store backups,
 #      defaults to Composer's `cache-dir`.
 #    - Backups are named with a timestamp, seconds since the Unix epoch.
 #    - If the status check detects changes, the requested operation
 #      will be aborted.
 #    - If the back-up process fails in any way, the requested operation
 #      will be aborted.
 #    - The status check and back-up can considerably slow down any attempt
 #      to install or update.
 #
 # Example of a command to delete 15-day-or-older backups, which can be used as
 # a cronjob:
 #
 #    ```
 #    find $(composer config cache-dir)/backups -mindepth 1 -maxdepth 1 -type d -mtime +15 -delete
 #    ```
 #
 # Link:
 #    - https://getcomposer.org/
 #    - https://github.com/composer/composer/issues/9972#issuecomment-861806548
 #
 # Arguments:
 #    - https://getcomposer.org/doc/03-cli.md
 #
 function composer() {
 	local bin=/usr/local/bin/composer

 	if [ -f "vendor/composer/installed.json" ]; then
 		case $1 in
 			install | reinstall | update)
 				echo "The current operation may overwrite data."
 				echo "Verifying if you have local changes…"
 				$bin status
 				if [ $? -ne 0 ] ; then
 					return
 				fi

 				local bck=$($bin config cache-dir)/backups/$(date +%s)
 				echo "Preparing backup of manifest, lock file, and vendor directory…"

 				mkdir -p $bck
 				if [ $? -ne 0 ] ; then
 					echo "Failed to create backup directory"
 					return
 				fi

 				cp -R ./vendor $bck
 				local ex=$?
 				if [ $? -ne 0 ] ; then
 					echo "Failed to backup vendor directory"
 					return
 				fi

 				cp ./composer.lock $bck
 				local ex=$?
 				if [ $? -ne 0 ] ; then
 					echo "Failed to backup lock file"
 					return
 				fi

 				cp ./composer.json $bck
 				local ex=$?
 				if [ $? -ne 0 ] ; then
 					echo "Failed to backup manifest file and vendor directory"
 					return
 				fi

 				echo "Backup of vendor directory is located at: ${bck}"
 				;;
 		esac
 	fi

 	$bin $*
 }
	#
	# Alias of `composer` command that, if Composer's installed.json is present, checks
	# for local changes in dependencies and backs-up the composer.json, composer.lock,
	# and vendor directory before executing install, reinstall, or update commands.
	#
	# Useful if you often need to modify the code of your dependencies and they are
	# installed from source.
	#
	# Version: 1.1.0
	# License: MIT
	# Author: Chauncey McAskill
	#
	# Note:
	# - This code has only been tested on Unix systems.
	# - Change the `bin` variable to where the `composer` binary is located.
	# - Change the `bck` variable to where you want to store backups,
	# defaults to Composer's `cache-dir`.
	# - Backups are named with a timestamp, seconds since the Unix epoch.
	# - If the status check detects changes, the requested operation
	# will be aborted.
	# - If the back-up process fails in any way, the requested operation
	# will be aborted.
	# - The status check and back-up can considerably slow down any attempt
	# to install or update.
	#
	# Example of a command to delete 15-day-or-older backups, which can be used as
	# a cronjob:
	#
	# ```
	# find $(composer config cache-dir)/backups -mindepth 1 -maxdepth 1 -type d -mtime +15 -delete
	# ```
	#
	# Link:
	# - https://getcomposer.org/
	# - https://github.com/composer/composer/issues/9972#issuecomment-861806548
	#
	# Arguments:
	# - https://getcomposer.org/doc/03-cli.md
	#
	function composer() {
	local bin=/usr/local/bin/composer

	if [ -f "vendor/composer/installed.json" ]; then
	case $1 in
	install \| reinstall \| update)
	echo "The current operation may overwrite data."
	echo "Verifying if you have local changes…"
	$bin status
	if [ $? -ne 0 ] ; then
	return
	fi

	local bck=$($bin config cache-dir)/backups/$(date +%s)
	echo "Preparing backup of manifest, lock file, and vendor directory…"

	mkdir -p $bck
	if [ $? -ne 0 ] ; then
	echo "Failed to create backup directory"
	return
	fi

	cp -R ./vendor $bck
	local ex=$?
	if [ $? -ne 0 ] ; then
	echo "Failed to backup vendor directory"
	return
	fi

	cp ./composer.lock $bck
	local ex=$?
	if [ $? -ne 0 ] ; then
	echo "Failed to backup lock file"
	return
	fi

	cp ./composer.json $bck
	local ex=$?
	if [ $? -ne 0 ] ; then
	echo "Failed to backup manifest file and vendor directory"
	return
	fi

	echo "Backup of vendor directory is located at: ${bck}"
	;;
	esac
	fi

	$bin $*
	}