Generate topology order for ROS packages

depsh.bash

#!/bin/bash
set -x

for target in ros ros_comm ros_core ros_base robot viz desktop perception simulators desktop_full; do
    if ! [ -r $target/topology.txt ]; then
        mkdir -p $target
        pushd $target
        mkdir -p src
        rosinstall_generator $target --rosdistro melodic --deps --tar | vcs import src
        colcon list -t -n > topology.txt
        popd
    fi
done

makepreq() {
    target=$1/preq.txt
    shift
    echo > $target
    for pre in "$@"; do
        cat $pre/topology.txt >> $target
    done
}

makepreq ros
makepreq ros_comm ros
makepreq ros_core ros_comm ros
makepreq ros_base ros_core ros_comm ros
makepreq robot ros_base ros_core ros_comm ros
makepreq viz robot ros_base ros_core ros_comm ros
makepreq desktop viz robot ros_base ros_core ros_comm ros
makepreq perception desktop viz robot ros_base ros_core ros_comm ros
makepreq simulators perception desktop viz robot ros_base ros_core ros_comm ros
makepreq desktop_full simulators perception desktop viz robot ros_base ros_core ros_comm ros

removelines() (
    awk 'NR==FNR{a[$0];next} !($0 in a)' $2 $1 > $3
)

i=01
for target in ros ros_comm ros_core ros_base robot viz desktop perception simulators desktop_full; do
    removelines $target/topology.txt $target/preq.txt $(printf "%02d" $i)_${target}
    ((i++))
done