git-import-dscs

#!/bin/sh
# Author: Pali Rohár
# License: GPLv3+
# Description: Shell script for importing Debian source packages to git (using git import-dsc)
set -e
test ! -d .git && git init
while test "$#" != "0"; do
    last="$(git show-branch --sha1-name master | sed -n 's/^\[\(.*\)\] .*/\1/p' || true)"
    git branch -D upstream || true
    git branch upstream || true
    git import-dsc "$1"
    again=0
    c1="$(git show-branch --sha1-name master | sed -n 's/^\[\(.*\)\] .*/\1/p')"
    if test "$c1" = "$last"; then
        git merge upstream || true
    fi
    DATE="$(dpkg-parsechangelog | sed -n 's/Date: //p')"
    AUTHOR="$(dpkg-parsechangelog | sed -n 's/Maintainer: //p')"
    if git show-branch upstream; then
        c2="$(git show-branch --sha1-name upstream | sed -n 's/^\[\(.*\)\] .*/\1/p')"
        if test "$c1" != "$last" -a "$c2" != "$last" -a "$c1" != "$c2"; then
            again=1
            git tag -d $(git tag --contains master)
            git reset --hard upstream
        fi
        git branch -d upstream
    fi
    if git show-branch HEAD^ && ! test -d debian; then
        git checkout HEAD^ -- debian || true
        git add debian || true
        TAGS="$(git tag --contains master)"
        git tag -d $TAGS
        EDITOR=true git commit --amend
        for tag in $TAGS; do git tag $tag; done
    fi
    if ! test -z "$DATE" -o -z "$AUTHOR"; then
        TAGS="$(git tag --contains master)"
        git tag -d $TAGS
        EDITOR=true git commit --amend --date="$DATE" --author="$AUTHOR"
        for tag in $TAGS; do git tag $tag; done
    fi
    if test "$again" = "1"; then
        git branch upstream
        git clean -f
        git import-dsc "$1"
        git branch -d upstream
    fi
    shift
done