unsplitp

#!/bin/bash
# unsplitp
# Take one split PKGBUILD and create multiple normal PKGBUILDs
# Usage: unsplitp path/to/split/PKGBUILD

isplitp() {  # is $1 a split PKGBUILD?
  grep -q "package_.*()" "$1" && grep -q "build()" "$1" || return 1 # grep -q "^pkgbase=" "$1" && <-- not always there.
}

unsplitp() {  # take one split PKGBUILD and create multiple normal PKGBUILDs
  unstartd="$(pwd)"
  cp PKGBUILD PKGBUILD$BASHPID.orig
  . PKGBUILD # get the PKGBUILD's vars into our mem
  for pkg in ${pkgname[@]}; do # seperate PKGBUILDs
    [[ "$pkg" == "$pkgbase" ]] && continue # skip pkgbase
    mkdir -p "$pkg" && cd "$pkg" || return 1
    cp -f "$unstartd/PKGBUILD" ./ || return 1
    sed -i "/^pkgbase=.*/d; /^package_$pkg()/s//package()/; /^true && pkgname=.*/d; /^pkgname=.*/s//pkgname=$pkg/; /true && depends=()/d; /^package_.*()/,/^}\s*$/d; s/\(.*\)\$pkgbase\(.*\)/\1$pkgbase\2/; s/\(.*\)\$pkgname\([^\[].*\)/\1$pkgname\2/; s/\(.*\)\$pkgname\[\(\d\d*\)\]\(.*\)/\1${pkgname[\2]}\3/; s/\([^=]\)$pkg/\1\${pkgname}/g" PKGBUILD || return 1
  done; cd "$unstartd"
  sed -i "/^pkgbase=.*/d; /^package_$pkgbase()/s//package()/; /^true && pkgname=.*/d; /^pkgname=.*/s//pkgname=$pkgbase/; /true && depends=()/d; /^package_.*()/,/^}\s*$/d; s/\(.*\)\$pkgbase\(.*\)/\1$pkgbase\2/; s/\(.*\)\$pkgname\([^\[].*\)/\1$pkgname\2/; s/\(.*\)\$pkgname\[\(\d\d*\)\]\(.*\)/\1${pkgname[\2]}\3/; s/\([^=]\)$pkgbase/\1\${pkgname}/g" PKGBUILD || return 1 # fix pkgbase PKGBUILD
  grep -q "^package()" PKGBUILD || sed -i "/^build()/s//package()/" PKGBUILD || return 1 # if no package(), rename build() to package()
}

#main() {
[[ -z "$1" ]] && [[ -r PKGBUILD ]] && isplitp PKGBUILD && unsplitp && exit 0
[[ -r "$1" ]] && isplitp "$1" && (cd "$(dirname "$1")"; unsplitp && exit 0) && exit 0
echo "ERROR: Split PKGBUILD not found or unsplitting failed"; exit 1
#}