A bash script for fetching all branches and tags of a git project as snapshots into separate folders

gistfile1.txt

#!/bin/bash
 
# Created by Håvard Fossli <hfossli@gmail.com> in 2013
# This is free and unencumbered software released into the public domain.
# For more information, please refer to <http://unlicense.org/>
#
# Description
# A bash script for fetching all branches and tags of a git project as snapshots into separate folders
#
# Keywords
# Terminal, bash, unix, mac, shell, script, git, folders, directories, branch, branches, tag, tags, snapshot
#

function usage {
	echo "For help and detailed guide type:"
	echo "\$ $0 -h"
}

# Allow to be terminated with ctrl + c
trap "exit" INT

# Set variables and default values
OUT_FORMAT=''
REPO=''
VERBOSE=false
PLAY_SOUND=false
DRY_RUN=false
GET_TAGS=false
GET_BRANCHES=false
HELP=false

# Grab input arguments
while getopts “g:o:vptbhd” OPTION
do
     case $OPTION in
         g) REPO=$(echo "$OPTARG" | sed 's/ /\\ /g' ) ;;
         o)	OUT_FORMAT=$(echo "$OPTARG" | sed 's/ /\\ /g' ) ;;
         v)	VERBOSE=true ;;
         p)	PLAY_SOUND=true ;;
	 	 t) GET_TAGS=$(echo "$OPTARG" | sed 's/ /\\ /g' ) ;;
	 	 b) GET_BRANCHES=$(echo "$OPTARG" | sed 's/ /\\ /g' ) ;;
         h)	HELP=true ;;
         d)	DRY_RUN=true ;;
         ?)	usage
			exit 1
			;;
     esac
done

function detailed_guide {
	echo "
Example gets all branches and tags: 
\$ $0 -g git@github.com:hfossli/drmobile-integration.git -o ~/Desktop/drmobile-integration/branches/{{name}}/ -t -b

Flags: 
-g	Git repo
	E.g. git@github.com:hfossli/drmobile-integration.git

-t  Tags

-b 	Branches

-o	Path to folder with format (string)
	Possible variables: 
	- {{name}} (name of tag or branch)
	- {{type}} ('tag' | 'branch')

	E.g. ./path/{{name}}/ will produce ./path/develop/

-h	Takes no arguments
	Help - detailed guide

-d	Takes no arguments
	Dry-run (no actual writing)
	"
}

if $HELP ; then
	detailed_guide
	exit 1
fi

if [[ -z $REPO ]] ; then
	echo "Invalid git repo"
    usage
    exit 1
fi

if !$GET_TAGS && !$GET_BRANCHES ; then
	echo "Specify wether you want branches or tags or both"
    usage
    exit 1
fi

TMP_DIR=$(mktemp -dt "git_branches_as_folders")

if $VERBOSE ; then
	echo "Cloning repo $REPO to $TMP_DIR"
fi
git clone ${REPO} ${TMP_DIR}

if $VERBOSE ; then
	echo "Looping over all branches:"
fi

local_git="git --git-dir=${TMP_DIR}/.git --work-tree=${TMP_DIR}/"

for branch in `$local_git branch -a | grep remotes | grep -v HEAD | grep -v master `; do
	branch_name=`echo $branch | sed -e "s/remotes\/origin\///g"`
	folder=`echo $OUT_FORMAT | sed -e "s/{{name}}/$branch_name/g" | sed -e "s/{{type}}/branch/g" `

	if $VERBOSE ; then
		echo "	Checking out branch $branch as $branch_name"
	fi
    $local_git checkout -b $branch $branch_name

	if $VERBOSE ; then
		echo "	Creating directory: '$folder'";
	fi    
	mkdir -p $folder

	if $VERBOSE ; then
		echo "	Copying contents of folder $TMP_DIR to $folder";
	fi    	
	cp -R $TMP_DIR/* $folder
done

for tag in `$local_git tag -l`; do
	tag_name=`echo $tag | sed -e "s/remotes\/origin\///g"`
	folder=`echo $OUT_FORMAT | sed -e "s/{{name}}/$tag_name/g" | sed -e "s/{{type}}/tag/g" `

	if $VERBOSE ; then
		echo "	Checking out tag $tag as $tag_name"
	fi
    $local_git checkout -b $tag $tag_name

	if $VERBOSE ; then
		echo "	Creating directory: '$folder'";
	fi    
	mkdir -p $folder

	if $VERBOSE ; then
		echo "	Copying contents of folder $TMP_DIR to $folder";
	fi    	
	cp -R $TMP_DIR/* $folder
done

if $VERBOSE ; then
	echo "Deleting temp folder";
fi    	
rm -rf $TMP_DIR

if $PLAY_SOUND ; then
	# & means async
	say "Done! ." &
fi

mktemp will not work on some distros:

mktemp [OPTION]... [TEMPLATE]

Create a temporary file or directory, safely, and print its name.
TEMPLATE must contain at least 3 consecutive `X's in last component.
If TEMPLATE is not specified, use tmp.XXXXXXXXXX, and --tmpdir is implied.

Fixed that, and it worked! Thanks.