#!/bin/bash

# Slackware build script for lotus123

# Written by B. Watson (urchlay@slackware.uk)

# Licensed under the WTFPL. See http://www.wtfpl.net/txt/copying/ for details.

# This is a very cool hack, though I'm not sure about my own sanity in
# wanting to package it...

# Purists take note: this really is i386, but since Slackware no
# longer supports i386 or i486, ARCH is set to i586. That's the
# minimum Slackware-supported ARCH this will run on.

# I thought about creating and hosting a static binary for x86_64, but
# statify doesn't support newer kernels (like, the one in Slack 15.0),
# and Slackware doesn't ship static libraries except libc, so there's
# no way to statically link ncurses (unless I build static ncurses
# myself, which I don't much want to do).

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

PRGNAM=lotus123
SRCNAM=123elf
DISKNAM=123UNIX
VERSION=${VERSION:-1.0.0rc4}
BINUTVER=${BINUTVER:-2.38}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

# Don't exit on bad arch/etc here, we want PRINT_PACKAGE_NAME to work.
# Note that if ARCH=x86_64 or i686, we change it to i586 before
# printing the package name.
case "$ARCH" in
  i?86) ARCH=i586 ;;

  x86_64)
    if [ "$( /bin/ls /lib/ld-*.so 2>/dev/null )" = "" ]; then
      MULTI=fail
    else
      MULTI=ok
      ARCH=i586
    fi ;;

  *) BADARCH=yes ;;
esac

if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  exit 0
fi

if [ "$BADARCH" = "yes" ]; then
  cat <<EOF

***********************************************************************
Unsupported architecture: $ARCH
This can only be built on i586, i686, and (maybe) x86_64 with multilib.
***********************************************************************

EOF
  exit 1
elif [ "$MULTI" = "fail" ]; then
  cat <<EOF

***********************************************************************
Building on x86_64 is unsupported, and you don't have multilib, so
it's actually impossible.
***********************************************************************

EOF
  exit 1
elif [ "$MULTI" = "ok" ]; then
  # I haven't tested on multilib (I don't use it). Good luck.
  cat <<EOF

***********************************************************************
Building on x86_64 is unsupported, but you have multilib, so we'll try.
If it doesn't work, fix it and send the maintainer a patch, or else
build the package on 32-bit x86 and install it on multilib x86_64.
***********************************************************************

EOF
  sleep 3
fi

TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $SRCNAM-$VERSION
tar xvf $CWD/$SRCNAM-$VERSION.tar.gz
cd $SRCNAM-$VERSION
cp $CWD/$DISKNAM?.IMG .
tar xvf $CWD/binutils-$BINUTVER.tar.xz
chown -R root:root .
find -L .  -perm /111 -a \! -perm 755 -a -exec chmod 755 {} \+ -o \
        \! -perm /111 -a \! -perm 644 -a -exec chmod 644 {} \+

# Fix hardcoded man page install path.
ln -s share/man man
sed -i 's,share/man,man,g' Makefile

# Our binutils doesn't support COFF, so we have to use this:
sh binutils.sh

# Extract the files from the disk images.
sh extract.sh

# Rest of the build is simple from our POV.
make
make install prefix=$PKG/usr

strip $PKG/usr/bin/123
gzip -9 $PKG/usr/man/man*/*

# Icon downloaded from:
# https://www.deviantart.com/dharmapoa/art/Lotus-1-2-3-Icon-881499542
# ...and resized with ImageMagick's convert.
HICOLOR=$PKG/usr/share/icons/hicolor
for i in $CWD/icons/*.png; do
  px="$( basename $i .png )"
  sz="${px}x${px}"
  dir=$HICOLOR/$sz/apps
  mkdir -p $dir
  cat $i > $dir/$PRGNAM.png
done
mkdir -p $PKG/usr/share/pixmaps
ln -s ../icons/hicolor/48x48/apps/$PRGNAM.png $PKG/usr/share/pixmaps/$PRGNAM.png

# .desktop file by SlackBuild author.
mkdir -p $PKG/usr/share/applications
cat $CWD/$PRGNAM.desktop > $PKG/usr/share/applications/$PRGNAM.desktop

PKGDOC=$PKG/usr/doc/$PRGNAM-$VERSION
mkdir -p $PKGDOC
cp -a *.md $PKGDOC
cat $CWD/$PRGNAM.SlackBuild > $PKGDOC/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
cat $CWD/doinst.sh > $PKG/install/doinst.sh

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE