#!/bin/sh

_find_cvs() {
	for _basepath in /{var/,usr/local/,}cvs ; do
		if [ -d ${_basepath}/CVSROOT -a \
				-d ${_basepath}/src -a \
				-d ${_basepath}/ports -a \
				-d ${_basepath}/xenocara ]; then
			CVSROOT=${_basepath}
			return 0
		fi
	done
	return 1
}

_usage() {
	echo "Usage: `basename $0` [-h] [-t TAG]" 1>&2
}

# Set the cvstag to an empty string, so that we can check if it was set via -t
TAG=

# Parse the command line options
while getopts ht: OPT; do
	case "${OPT}" in
		h)	_usage
			exit 0
			;;
		t)	TAG="-r${OPTARG}"
			;;
		\?)	# Error from getopts
			_usage
			exit 1
			;;
	esac
done

BSDSRCDIR=$(grep BSDSRCDIR /etc/mk.conf 2>/dev/null | sed 's/^.*=//g')
BSDSRCDIR=${BSDSRCDIR:=/usr/src}

# Set the CVSROOT, if there is an @ in the cvs root we will use compression
if ! _find_cvs ; then
	# Try to get the CVSROOT from the existing source tree
	_cvsroot=${BSDSRCDIR}/CVS/Root
	test -e ${_cvsroot} \
		&& CVSROOT=$(cat ${_cvsroot} | sed -e 's/[[:space:]]*//')
	COMPRESS=$(echo ${CVSROOT} | awk '/@/ { print "-z3"; }')
fi

# There is nothing we can do unless some CVSROOT was found
test -z ${CVSROOT} && { echo "Unable to deduce CVSROOT, exiting..."; exit 2; }

# Create the log directory if not existant
mkdir -p ${HOME}/cvslogs

# Create the Tag flag for cvs. Either from the uname output or an empty var
# for current systems
# The Tag file should not exist on -current trees
if [ -f ${BSDSRCDIR}/CVS/Tag -a -z "${TAG}" ]; then
	# Make the openbsd specific tag for the system.
	TAG=$(uname -s -r | awk '{ print toupper($0); }' | tr " ." _)
	TAG="-r${TAG}"
fi

if [ "X${TAG}" = "XHEAD" ]; then
	TAG=
fi

# The date we are updateing the sources on.
DATE=$(date +%F)

# Update ${BSDSRCDIR} (if it exists)
if [ -d "${BSDSRCDIR}/CVS" ]; then
	echo "Starting CVS update for ${BSDSRCDIR} at $(date +%T)."
	cd "${BSDSRCDIR}" && \
		cvs -R ${COMPRESS} -d ${CVSROOT} -q up ${TAG} -PdA 2>&1 \
			| tee -a "${HOME}/cvslogs/cvs-src-${DATE}"
	echo "Finished CVS update for ${BSDSRCDIR} at $(date +%T)."
else
	echo "Skipping ${BSDSRCDIR} (does not exist)"
fi

PORTSDIR=$(grep PORTSDIR= /etc/mk.conf 2>/dev/null | sed 's/^.*=//g')
PORTSDIR=${PORTSDIR:=/usr/ports}
# Update ${PORTSDIR} if the directory exists
if [ -d "${PORTSDIR}/CVS" ]; then
	echo "Starting CVS update for ${PORTSDIR} at $(date +%T)."
	cd "${PORTSDIR}" && \
		cvs -R ${COMPRESS} -d ${CVSROOT} -q up ${TAG} -PdA 2>&1 \
			| tee -a "${HOME}/cvslogs/cvs-ports-${DATE}"
	echo "Finished CVS update for ${PORTSDIR} at $(date +%T)."
else
	echo "Skipping ${PORTSDIR} (does not exist)"
fi

# Update $XSRCDIR if the directory exists
XSRCDIR=$(grep XSRCDIR /etc/mk.conf 2>/dev/null| sed 's/^.*=//g')
XSRCDIR=${XSRCDIR:=/usr/xenocara}
if [ -d "${XSRCDIR}/CVS" ]; then
	echo "Starting CVS update for ${XSRCDIR}"
	cd "${XSRCDIR}" && \
		cvs -R ${COMPRESS} -d ${CVSROOT} -q up ${TAG} -PdA 2>&1 \
			| tee -a "${HOME}/cvslogs/cvs-xenocara-${DATE}"
	echo "Finished CVS update for ${XSRCDIR} at $(date +%T)."
else
	echo "Skipping ${XSRCDIR} (does not exist)"
fi