devup

#!/bin/bash
#
# This is a small script to update a set of svn and git repositories in one go
#
# Author: Stefan Hepp <hepp@complang.tuwien.ac.at>
#

# TODO alternatively check home for devup.cfg?
self=`readlink -f $0`
cfgfile=`dirname $self`/devup.cfg
base=`dirname $self`/..


##### Configuration starts here. Overwrite defaults in ./devup.cfg #####

#
# By default assume that all other repositories are checked out into the parent
# directory of this folder. Set repository names and the git and svn base dirs
# in 'devup.cfg' in the same folder as this script to your setup if you have a 
# different directory layout.
#

# Base directory for git and svn repositories
GITBASE=$base
SVNBASE=$base

# Names of svn subdirectories in $SVNBASE
SVNREPOS="tcrest tcapapers"

# Names of git subdirectories in $GITBASE
GITREPOS="patmos benchmarks newlib compiler-rt gold clang llvm misc"

# Perform git stash before updating
DO_STASH=false

# Color codes
RED="\033[31m"
NOCOLOR="\033[0m"

##### Configuration ends here #####


if [ -f $cfgfile ]; then
    . $cfgfile
fi

function usage() {
    echo "Usage: $0 [-s] [<repostype> ..] "
    echo 
    echo "  -s	    Use git stash before updating git"
    echo 
    echo "Repository types can be 'git' or 'svn'. Will update all types if omitted."
    echo
}

function gitup() {
    repo=$1
    
    if [ ! -d $GITBASE/$repo ]; then
	return
    fi

    echo -e "* Updating$RED $repo" $NOCOLOR

    pushd $GITBASE/$repo > /dev/null

    if [ "$DO_STASH" == "true" ]; then
	ret=$(git stash)
	if [ "$?" != "0" ]; then
	    echo "git stash failed!"
	    exit 1
	fi
	# TODO is there a better way of doing this?
	local skip_stash=false
	if [ "$ret" == "No local changes to save" ]; then
	    skip_stash=true
	fi
    fi
    # ignore errors of pull .. 
    (git pull --rebase; git status -uno) | while read a; do

	if [ "$a" == "Current branch master is up to date." ]; then
	    continue
	fi

	if [ "$a" == "# On branch master" ]; then
	    continue
	fi
	if [ "$a" == "nothing to commit (use -u to show untracked files)" ]; then
	    continue
	fi

	echo $a
    done
    if [ "$DO_STASH" == "true" -a "$skip_stash" != "true" ]; then
	# continue on error .. 
	git stash pop
    fi

    popd > /dev/null

    echo 
}

function svnup() {
    repo=$1

    if [ ! -d $SVNBASE/$repo ]; then
	return
    fi

    echo -e "* Updating$RED $repo" $NOCOLOR
    svn up $SVNBASE/$repo
    echo 
}

DO_UPDATE_ALL=true
DO_UPDATE_GIT=false
DO_UPDATE_SVN=false

while [ ! -z "$1" ]; do
    case $1 in
    git) DO_UPDATE_ALL=false; DO_UPDATE_GIT=true ;;
    svn) DO_UPDATE_ALL=false; DO_UPDATE_SVN=true ;;
    -s) DO_STASH=true ;;
    -h|--help)
	usage
	exit 0
	;;
    *) 
	echo "Unknown option: $1"
	exit 1
	;;
    esac
    shift
done


if [ "$DO_UPDATE_GIT" == "true" -o "$DO_UPDATE_ALL" == "true" ]; then
    for repo in $GITREPOS; do
	gitup $repo
    done
fi

if [ "$DO_UPDATE_SVN" == "true" -o "$DO_UPDATE_ALL" == "true" ]; then
    for repo in $SVNREPOS; do
	svnup $repo
    done
fi