apatch/apatch

#!/bin/sh

startdir="$PWD"

[ -f APKBUILD ] || ( echo "please run this in a package directory"; exit 1 )
[ "$1" != "" ] || ( echo "usage: apatch <patch name>"; exit 1 )

set -e

abuild clean fetch unpack default_prepare

# obtain builddir
startdir="$PWD"
srcdir="$startdir/src"
. APKBUILD
test -n "$builddir" || builddir="$srcdir/$pkgname-$pkgver"

patchpath="$startdir/$1"

for patch in $source; do
  if [ "$patch" = "$1" ]; then
    # if the patch was in source, it was already applied in prepare() above,
    # but we want the original src to not have it, so we can get a full diff of
    # its original changes + our new ones
    (
      cd "$builddir"
      patch -R -p1 < "$patchpath"
    )
    break
  fi
done

(
	cd "$builddir"
	git init
	git add .
	git commit -m "$pkgver" >/dev/null

  # if file exists, try to apply
  if [ -e "$patchpath" ]; then
    git apply --reject --whitespace=fix "$patchpath" || {
      git status --porcelain | grep '\?\? .*\.rej$' | cut -c4- | while read -r reject; do
        target="${reject%.rej}"
        wiggle --merge --replace "$target" "$reject" || {
          echo "[!] could not merge $target, fix manually"
        }
        rm "$reject"
        rm "$target.porig" # left by wiggle
      done
    }
  fi

	$SHELL

	git add .
	git diff --cached > "$patchpath"
	if [ ! -s "$patchpath" ]; then
	  echo "[*] patch is empty, removing"
	  rm "$patchpath"
	fi
)