subaur4

#!/bin/bash
#
# To run: ./subaur4 SUBMODULE_DIR
#
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
#
# The MIT License (MIT)
#
# Copyright (c) 2015 Alexandre Magno ‒ alexandre.mbm@gmail.com
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
#
# Based in knowledge of import-to-aur4.sh [1] and aur4_make_submodule.sh [2]
#
# 1: http://github.com/ido/packages-archlinux/blob/master/bin/import-to-aur4.sh
# 2: http://github.com/JonnyJD/PKGBUILDs/blob/master/_bin/aur4_make_submodule.sh

which mksrcinfo &>/dev/null \
	|| { echo "Please install the pkgbuild-introspection"; exit -1; }

if [ $# -lt 1 -o \( "$1" = "-h" -o "$1" = "--help" \) ]; then
	echo "usage: $0 <path/to/package>"
	echo "(should be done in root of the original repository)"
	exit -1
fi

path=${1%/}             # the trailing '/' is removed

pkg=$(basename $path)

function execforme() {
    echo "$1"
    for i in `seq 1 ${#1}`; do printf -; done
    if [ $2 ]; then
        echo
        shift
        echo "$ $*"
        $*
    fi
    echo
}

echo

execforme "remove the path from version control" \
    git rm -r --cached "$path"

execforme "making backup" \
    mv "$path" "${pkg}_aur4_bak"

execforme "add the AUR 4 package as a submodule at the previous path" \
    git submodule add -f ssh+git://aur@aur4.archlinux.org/${pkg}.git $path

execforme "restore uncommited/unversioned files from backup" \
    cp -r "${pkg}_aur4_bak/"* "$path"

execforme "remove backup directory" \
    rm -rf "${pkg}_aur4_bak"

execforme "enter submodule direcotory" \
    pushd ${path}

execforme "generating .SRCINFO" \
    mksrcinfo

execforme "adding files to git" \
    git add .

execforme "commit on child repository"
    git commit -m "Begins as submodule at GitHub alexandre-mbm/arch-pkgs"; echo

execforme "exit submodule direcotory" \
    popd

execforme "retry the submodule" \
    git submodule add -f ssh+git://aur@aur4.archlinux.org/${pkg}.git $path

execforme "commit on root repository"
    git commit -m "${pkg}: converted to AUR 4 submodule"; echo

# Some help to undo failures (the tip is see the "git status" for each step):
#
#   $ git reset --soft HEAD~1
#   $ git reset
#   $ rm -rf .gitmodules adobe-digital-editions/
#
# NO! Take care regarding to erase .gitmodules
#
#   $ git reset
#   $ git checkout master -- adobe-digital-editions