A simple utility for using Git locally while using an external SVN repository.

.git2svn.md

A simple utility for using Git locally while using an external SVN repository.

.git2svnrc

#Git Working Copy Directory
GIT_WORKING_DIR=/your/git/working/copy

#Temporary directory for Git Export
GIT_EXPORT_DIR=$GIT_WORKING_DIR/usr/tmp/.export

#SVN Working Copy Directory
SVN_WORKING_DIR=/your/svn/working/copy

git2svn.sh

#!/usr/bin/env bash

## Functions
showUsage() {
	echo
	printf "git2svn - A simple utility for using Git locally while using an external SVN repository.\n"
	printf "\tAssumes ./.git2svnrc or ./usr/.git2svnrc exists.\n"
	printf "\t*** NOTE: Those are relative paths. ***\n\n"

	printf "./git2svn import\n"
	printf "\tImport the SVN working copy to the Git working copy.\n"
	printf "./git2svn export\n"
	printf "\tExport Git working copy to the SVN working copy with option to commit.\n"
	printf "./git2svn update\n"
	printf "\tUpdate the SVN working copy from the remote SVN repository.\n"
	printf "./git2svn delete\n"
	printf "\Delete Git-deleted/moved files from the SVN working copy from the remote SVN repository.\n"
	printf "./git2svn status\n"
	printf "\tShow SVN Status w/o changing directories.\n"
	echo

	# Show configured directories.
	echo
	echo CONFIG = $CONFIG
	echo USR_CONFIG = $USR_CONFIG
	echo CONFIG_LOADED = $CONFIG_LOADED
	echo
	echo GIT_WORKING_DIR = $GIT_WORKING_DIR
	echo GIT_EXPORT_DIR = $GIT_EXPORT_DIR
	echo SVN_WORKING_DIR = $SVN_WORKING_DIR
	echo
}

showSvnStatus() {
	cd $SVN_WORKING_DIR

	echo
	echo SVN Status
	echo =====================================================================
	echo $SVN_WORKING_DIR
	echo =====================================================================
	svn status
}

loadConfig () {
	if [[ -e $1 ]]; then
		source $1
		if [[ $? -ne 0 ]]; then
			echo "Error loading configuration file at $1"
			exit
		fi
		CONFIG_LOADED=$1
	fi
}

getConfig () {
	
	# User-specific config.
	USR_CONFIG=./usr/.git2svnrc

	# Config
	CONFIG=./.git2svnrc

	# Read configuration.
	# Check for it first in the usr subdirectory.
	loadConfig $USR_CONFIG
	if [[ -z $CONFIG_LOADED ]]; then
		loadConfig $CONFIG
	fi

	#Directories are read-in from the configuration file.
	if [[ "$GIT_WORKING_DIR" = "" ]]; then
		echo "The SVN working copy directory is not specified."
		showUsage
		exit 3
	fi

	if [[ "$SVN_WORKING_DIR" = "" ]]; then
		echo "The SVN working copy directory is not specified."
		showUsage
		exit 3
	fi

	if [[ "$GIT_EXPORT_DIR" = "" ]]; then
		echo "The SVN working copy directory is not specified."
		showUsage
		exit 3
	fi
}

importFromSvn() {
	# Switch to the SVN working copy.
	cd $SVN_WORKING_DIR

	# Update SVN working copy from external repo.
	svn update

	# Show status after operation.
	showSvnStatus

	# Provide option to import changes.
	echo "Import changes from the SVN working copy to the Git working copy?"
	select yn in "Yes" "No"; do
		case $yn in
			Yes ) 
				svn export $SVN_WORKING_DIR $GIT_WORKING_DIR --force
				
				# Show status after operation.
				cd $GIT_WORKING_DIR
				echo
				git status
				break;;
			No ) exit;;
		esac
	done
}

exportToSvn() {
	# Switch to the Git working copy.
	cd $GIT_WORKING_DIR

	# Export git repo to GIT_EXPORT_DIR folder.
	git checkout-index --prefix=$GIT_EXPORT_DIR/ -a

	# Copy contents of GIT_EXPORT_DIR to SVN working folder.
	cp -f -R $GIT_EXPORT_DIR/ $SVN_WORKING_DIR

	# Remove GIT_EXPORT_DIR folder.
	rm -rf $GIT_EXPORT_DIR

	# Switch to the SVN working copy.
	cd $SVN_WORKING_DIR

	# Show status after operation.
	showSvnStatus

	# Provide option to add all new files.
	echo
	echo "Add **ALL** unversioned files (?) to SVN's version control?"
	select yn in "Yes" "No"; do
		case $yn in
			Yes ) 
				svn status | grep '?' | sed 's/^.* /svn add /' | bash
				
				
				break;;
			No ) break;;
		esac
	done

	showSvnStatus
	# Provide option to commit changes.
	echo
	echo "Commit changes to the remote SVN repository?"
	select yn in "Yes" "No"; do
		case $yn in
			Yes ) 
				echo Commit Message:
				read MESSAGE
				svn commit -m "$MESSAGE"
				break;;
			No ) break;;
		esac
	done
}

deleteFromSvn() {
	# Switch to the Git working copy.
	cd $GIT_WORKING_DIR

	# Get list of deleted files.
	FILES_TO_DELETE=$(git status --porcelain | grep 'D' | sed 's/^.* /echo /' | bash)
	FILES_TO_DELETE=$(echo $FILES_TO_DELETE && git status --porcelain | grep 'R' | sed 's/ ->.*$//' | grep 'R' | sed 's/^.* /echo /' | bash)
	echo $FILES_TO_DELETE

	# SwigitvnStatus
}

updateFromRemoteSvn() {
	# Switch to the SVN working copy.
	cd $SVN_WORKING_DIR

	# Update from remote SVN repository.
	svn update

	# Show status after operation.
	showSvnStatus
}

## /Functions

# Get the script's directory.
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

getConfig

case $1 in
	"import" )
		importFromSvn
		;;
	"export" )
		exportToSvn
		;;
	"update" )
		updateFromRemoteSvn
		;;
	"delete" )
		deleteFromSvn
		;;
	"status" )
		showSvnStatus
		;;
	* )
		showUsage
esac