#!/bin/bash

# Copyright  2015  Patrick J. Volkerding, Sebeka, MN, USA
# 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.

# This script builds Qt, packages it without WebKit, upgrades the machine to
# a WebKit-less Qt, builds a WebKit package, merges the two packages, and
# finally upgrades the machine to a combined package.

cd $(dirname $0) ; CWD=$(pwd)

PKGNAM=qt
QTVERSION=$(ls qt-*.tar.?z* | rev | cut -f 3- -d . | cut -f 1 -d - | rev)
# Adjust the combined package $BUILD in qt-nowebkit.SlackBuild:
QTBUILD=$(grep BUILD= qt-nowebkit.SlackBuild | cut -f 2 -d - | cut -f 1 -d \})
WEBKITVERSION=$(ls qtwebkit/qtwebkit-*.tar.?z* | rev | cut -f 3- -d . | cut -f 1 -d - | rev)
# This $BUILD doesn't really need to change as long as these are combined:
WEBKITBUILD=$(grep BUILD= qtwebkit/qtwebkit.SlackBuild | cut -f 2 -d - | cut -f 1 -d \})

# Automatically determine the architecture we're building on:
MARCH=$( uname -m )
if [ -z "$ARCH" ]; then
  case "$MARCH" in
    i?86)    export ARCH=i586 ;;
    armv7hl) export ARCH=$MARCH ;;
    arm*)    export ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
    *)       export ARCH=$MARCH ;;
  esac
fi

# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
# the name of the created package would be, and then exit. This information
# could be useful to other scripts.
if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PKGNAM-${QTVERSION}-${ARCH}-${QTBUILD}.txz"
  exit 0
fi

if [ "$ARCH" = "x86_64" ]; then
  LIBDIRSUFFIX="64"
else
  LIBDIRSUFFIX=""
fi

TMP=${TMP:-/tmp}

# Build Qt and package it without WebKit:
rm -f $TMP/qt-${QTVERSION}-${ARCH}-${QTBUILD}.txz
./qt-nowebkit.SlackBuild
if [ ! -r $TMP/qt-${QTVERSION}-${ARCH}-${QTBUILD}.txz ]; then
  echo "FATAL:  Failed to build Qt package without WebKit."
  exit 1
fi

# Upgrade system to Qt (without WebKit):
/sbin/upgradepkg --reinstall --install-new $TMP/qt-${QTVERSION}-${ARCH}-${QTBUILD}.txz

# Build standalone WebKit package (qtwebkit):
rm -f $TMP/qtwebkit-${WEBKITVERSION}-${ARCH}-${WEBKITBUILD}.txz
( cd qtwebkit
  ./qtwebkit.SlackBuild )
if [ ! -r $TMP/qtwebkit-${WEBKITVERSION}-${ARCH}-${WEBKITBUILD}.txz ]; then
  echo "FATAL:  Failed to build QtWebKit standalone package."
  rm -f $TMP/qt-${QTVERSION}-${ARCH}-${QTBUILD}.txz
  exit 1
fi

# Combine the packages:
rm -rf $TMP/package-qt
mkdir -p $TMP/package-qt
( cd $TMP/package-qt
  /sbin/explodepkg $TMP/qtwebkit-${WEBKITVERSION}-${ARCH}-${WEBKITBUILD}.txz
  /sbin/explodepkg $TMP/qt-${QTVERSION}-${ARCH}-${QTBUILD}.txz
  cat $TMP/package-qtwebkit/install/doinst.sh | grep '^(' >> install/doinst.sh
  mv usr/doc/qtwebkit-* usr/doc/qt-*
  # Remove rpaths:
  for file in $(find . | xargs file | grep -e "executable" -e "shared object" | grep ELF | cut -f 1 -d : 2> /dev/null) ; do
    if [ ! "$(patchelf --print-rpath $file 2> /dev/null)" = "" ]; then
      patchelf --remove-rpath $file
    fi
  done
  # Don't ship .la files:
  rm -f usr/lib${LIBDIRSUFFIX}/*.la
  rm -f usr/lib${LIBDIRSUFFIX}/qt/lib/*.la
  /sbin/makepkg -l y -c n ../qt-${QTVERSION}-${ARCH}-${QTBUILD}.txz
)

# Remove intermediate qtwebkit package:
rm -f $TMP/qtwebkit-${WEBKITVERSION}-${ARCH}-${WEBKITBUILD}.txz

# Upgrade system to the combined Qt/WebKit package:
/sbin/upgradepkg --reinstall --install-new $TMP/qt-${QTVERSION}-${ARCH}-${QTBUILD}.txz

# Done.