source: trunk/debathena/scripts/dadch @ 22687

#!/bin/bash

if [ -e debian/changelog ]; then
    debian=debian
elif [ "$(basename "$PWD")" = debian ] && [ -e changelog ]; then
    debian=.
else
    echo "Cannot find debian/changelog." >&2
    exit 1
fi

package=$(head -n1 "$debian/changelog" | sed -n 's/^\([^ ]*\).*$/\1/ p')
version=$(head -n1 "$debian/changelog" | sed -n 's/^[^ ]* (\([^)]*\)).*$/\1/ p')
if [ -z "$package" ] || [ -z "$version" ]; then
    echo "Invalid debian/changelog." >&2
fi

dch_opts=()

newversion=$(
    newversion=$version
    dpkg-awk -f <(zcat /mit/debathena/apt*/dists/*/*/source/Sources.gz) \
        'Package:^'"$package"'$' -- Version | \
        sed -n 's/Version: // p' | \
        (
            while read aptversion; do
                if dpkg --compare-versions "$aptversion" '>=' "$newversion"; then
                    newversion=$(
                        echo "$aptversion" | \
                            sed -n 's/debathena\([0-9]*\)/ \1/ p' | \
                            (
                                if read -r base darelease; then
                                    echo "${base}debathena$(($darelease + 1))"
                                else
                                    echo "${aptversion}debathena1"
                                fi
                            )
                    )
                fi
            done
            echo "$newversion"
        )
)

if [ "$newversion" != "$version" ]; then
    echo "Changing version to $newversion"
    dch_opts+=(--newversion "$newversion" --distribution unstable)
fi

dch "${dch_opts[@]}" "$@"