gpm - Lightweight Git Package Manager

gpm

#!/bin/bash

me=`basename "$0"`
if [[ -z $1 || $1 == "-h" || $1 == "--help" ]]; then
	echo "Usage: $me <op[ install | i | update | u | force_update | fu | uninstall | un | list | l ]?> <source_platform[ github | gitlab ]> <source_name[ <author,groups>/<repo_name> ]> <protocol[ https | ssh ]?>"
else
	op="$1"
	force=0
	if [[ $op == "force_update" || $op == "fu" ]]; then
		op="u"
		force=1
	fi
	source_platform="$2"
	source_name="$3"
	protocol="$4"
	if [[ ! $protocol ]]; then
		protocol="https"
	fi
	repo_path="/opt/$source_platform/$source_name"

	if [[ $op == "install" || $op == "i" ]]; then
		if [[ $protocol == "https" || $protocol == "ssh" ]]; then
			if [ ! -d "$repo_path" ]; then
				echo "$ sudo mkdir -p \"$repo_path\""
				sudo mkdir -p "$repo_path"
				if [[ $protocol == "https" ]]; then
					echo "$ clone https://$source_platform.com/$source_name.git \"$repo_path\""
					if ! sudo git clone https://$source_platform.com/$source_name.git "$repo_path"; then
						echo "$ rm -rf \"$repo_path\""
						sudo rm -rf "$repo_path"
					else
						echo "git -C \"$repo_path\" config --unset core.filemode"
						sudo git -C "$repo_path" config --unset core.filemode
					fi
				else
					echo "$ git clone git@$source_platform.com:$source_name.git \"$repo_path\""
					if ! sudo git clone git@$source_platform.com:$source_name.git "$repo_path"; then
						echo "$ rm -rf \"$repo_path\""
						sudo rm -rf "$repo_path"
					else
						echo "git -C \"$repo_path\" config --unset core.filemode"
						sudo git -C "$repo_path" config --unset core.filemode
					fi
				fi
				open "$repo_path" 2> /dev/null # open finder in macOS
			else
				echo "$ git -C \"$repo_path\" pull"
				sudo git -C "$repo_path" pull
				echo "git -C \"$repo_path\" config --unset core.filemode"
				sudo git -C "$repo_path" config --unset core.filemode
			fi
		fi
	fi
	
	if [[ $source_platform && $source_name && ( $op == "update" || $op == "u" || $op == "uninstall" || $op == "un" ) ]]; then
		if [ ! -d "$repo_path" ]; then
			echo "$repo_path not installed."
			exit 1
		fi
		if [[ $op == "update" || $op == "u" ]]; then
			if [[ $force == 1 ]]; then
				echo "$ git -C \"$repo_path\" reset --hard HEAD"
				sudo git -C "$repo_path" reset --hard HEAD
			fi
			echo "$ git -C \"$repo_path\" pull --ff-only"
			sudo git -C "$repo_path" pull --ff-only
			echo "git -C \"$repo_path\" config --unset core.filemode"
			sudo git -C "$repo_path" config --unset core.filemode
		else
			echo "$ rm -rf \"$repo_path\""
			sudo rm -rf "$repo_path"
		fi
	else 
		if [[ ( ! $source_platform || $source_platform == "github" ) && ( $op == "update" || $op == "u" ) ]]; then # update all from source platform
			for dir in `find "/opt/github" -maxdepth 2 -mindepth 2`; do
				if [[ $force == 1 ]]; then
					echo "$ git -C \"$dir\" reset --hard HEAD"
					sudo git -C "$dir" reset --hard HEAD
				fi
				echo "$ git -C \"$dir\" pull --ff-only"
				sudo git -C "$dir" pull --ff-only
				echo "git -C \"$dir\" config --unset core.filemode"
				sudo git -C "$dir" config --unset core.filemode
			done
		fi
		if [[ ( ! $source_platform || $source_platform == "gitlab" ) && ( $op == "update" || $op == "u" ) ]]; then # update all from source platform
			for dir in `find "/opt/gitlab" -maxdepth 3 -mindepth 2`; do
				if [ -d "$dir/.git" ]; then
					if [[ $force == 1 ]]; then
						echo "$ git -C \"$dir\" reset --hard HEAD"
						sudo git -C "$dir" reset --hard HEAD
					fi
					echo "$ git -C \"$dir\" pull --ff-only"
					sudo git -C "$dir" pull --ff-only
					echo "git -C \"$dir\" config --unset core.filemode"
					sudo git -C "$dir" config --unset core.filemode
				fi
			done
		fi
	fi
	
	if [[ $op == "list" || $op == "l" ]]; then
		if [[ ( ! $source_platform || $source_platform == "github" ) ]]; then # list all from source platform
			echo ""
			for dir in `find "/opt/github" -maxdepth 2 -mindepth 2`; do
				echo "github ${dir//\/opt\/github\//}"
			done
		fi
		if [[ ( ! $source_platform || $source_platform == "gitlab" ) ]]; then # list all from source platform
			echo ""
			for dir in `find "/opt/gitlab" -maxdepth 3 -mindepth 2`; do
				if [ -d "$dir/.git" ]; then
					echo "gitlab ${dir//\/opt\/gitlab\//}"
				fi
			done
		fi
		echo ""
	fi
fi

This script allows to pull (install / update) or delete (uninstall) repositories from GitHub or GitLab. It's designed to work with repositories (that you want to use in read-only) in a way like working with any other package installer, but all it does is transfer the commands to git commands. It's not designed to work with branches. If you want to contribute or use different branches, you shouldn't use my lightweight gpm. This gpm is your quick method to checkout a repository on your system, locally.

Therefore, this is no replacement to the git command and also not a competition to aerys' gpm. This is just a simple quick solution when working with repositories on your local machine in read-only mode. I was just tired of manually pulling updates of all my read-only repositories. Not everybody builds proper releases and some repos contain non binaries that I wish to keep up to date. For this I made this quick script.

In this script repositories will be pulled to /opt/github or /opt/gitlab depending on the remote host.

Command samples:

• gpm install github directus/directus: pulls Directus to /opt/github/directus/directus
• gpm update github directus/directus: pulls from the upstream of /opt/github/directus/directus
• gpm update github: pulls from all cloned github repositories in /opt/github
• gpm update: pulls from all cloned repositories in /opt/*
• gpm list github: lists all folders in /opt/github which represents your cloned GitHub repositories
• gpm list: lists all folders in /opt/* which represents your cloned repositories (from all source platforms)
• gpm uninstall github directus/directus: Deletes /opt/github/directus/directus with all sub directories

(Use force_update instead of update to hard reset the affected packages.)

There is also the ability to use ssh instead of https (useful for private repositories). For this, please provide an additional parameter ssh on gpm install or gpm update. Additionally, there are short arguments available (i instead of install, u instead of update, fu instead of force_update, un instead of uninstall and l instead of list).