#! /bin/bash
# common modules for pbuilder.

function showhelp () {
    cat <<EOF
pbuilder - a personal builder
Copyright 2001 Junichi Uekawa
Distributed under GNU Public License version 2 or later

pbuilder [operation] [operation options]

command lines:
pbuilder create [--basetgz base.tgz-path] [--distribution woody|sid]
  Creates a base.tgz

pbuilder update [--basetgz base.tgz-path] [--distribution woody|sid]
  Updates a base.tgz

pbuilder build [--basetgz base.tgz-path] pbuilder_2.2.0-1.dsc
  Builds using the base.tgz. Requires a .dsc filename

pbuilder clean
  Cleans the temporal build directory.

Operation Options:
 --basetgz [base.tgz location]
 --buildplace [location of build]
 --mirror [mirror location]
 --http-proxy [proxy]
 --distribution [distribution(potato/woody/sid)]
 --buildresult [location-to-copy-build-result]
EOF
    exit 1
}

function umountproc () {
    if [ "$USEPROC" = "yes" ]; then
	echo " -> unmounting proc"
	umount "$BUILDPLACE/proc"
    fi
}

function mountproc () {
    if [ "$USEPROC" = "yes" ]; then
	echo " -> mounting proc"
	mkdir -p $BUILDPLACE/proc
	mount -t proc /proc "$BUILDPLACE/proc"
    fi
}

function cleanbuildplace () {
    if [ -d "$BUILDPLACE" ]; then 
	echo cleaning the build env
	rm -rf "$BUILDPLACE"
    fi;
}

function abortingfunction () {
    # rolling back to abort.
    umountproc
    cleanbuildplace
}

function installaptlines (){
    echo Installing apt-lines
    cat > "$BUILDPLACE"/etc/apt/sources.list << EOF
deb $MIRRORSITE $DISTRIBUTION main contrib non-free
deb-src $MIRRORSITE debian $DISTRIBUTION main contrib non-free
EOF
}

function extractbuildplace () {
    # after calling this function, umountproc, and cleanbuildplace
    # needs to be called. 
    cleanbuildplace
    echo "building the build env"
    echo " -> extracting base.tgz"
    mkdir -p "$BUILDPLACE"
    (cd "$BUILDPLACE" && tar xfzp "$BASETGZ")
    mountproc
    mkdir -p "$BUILDPLACE/tmp/buildd"
    echo " -> copying local configuration"
    for a in passwd hosts hostname resolv.conf; do 
	cp /etc/$a "$BUILDPLACE/etc/$a";
    done
    
    if [ -n "$DISTRIBUTION" ]; then
	installaptlines
    fi
}

#required for some packages to install...
export LANG=C
export LC_ALL=C