0patch

#!/bin/bash

Slackware utility to patch a SlackBuild

# Copyright 2026 Antonio Leal, Porto Salvo, Oeiras, Portugal
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

# example: 0patch /tmp/SBo/plus42-1.3.15/gtk/Makefile

set -e

if ! [ -f "$HOME/.config/0scriptsrc" ]; then
    install -Dm644 /usr/share/0scripts/0scriptsrc "$HOME/.config/0scriptsrc"
fi
source "$HOME/.config/0scriptsrc"

CWD="$(echo `pwd`)"
PKGNAME=${PWD##*/}

set -e

if ! [ -f $PKGNAME.info ]; then
  echo "You must run this script from within a SlackBuild folder."
  exit 0
fi

if [ "$1" = "" ]; then
    echo "Please provide a source file to patch as argument."
    exit 0
fi

file="${1##*/}"
echo
echo "Creating patch in folder patches/$file.patch"
echo
echo "Apply the patch in the SlackBuild with:"
echo "	patch $1 \$CWD/patches/$file.patch"
echo

mkdir -p patches
mkdir -p 0/patched

cp $1 0/patched/$file.new
$EDITOR 0/patched/$file.new > /dev/null 2>&1
diff -u $1 0/patched/$file.new > patches/$file.patch