#!/bin/sh

# Slackware build script for colem

# Written by B. Watson (yalhcru@gmail.com)

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

# 20180619 bkw: updated for 4.6.

# 20171218 bkw: updated for 4.2.
# - upstream started using PulseAudio, but I want to be able to build
#   with or without it, so added PULSE=no option.

# 20170819 bkw:
# - updated for 4.1. according to upstream's docs, the only changes from
#   4.0 to 4.1 are for windows, so don't expect any new features here.

# 20170627 bkw:
# - updated for 4.0
# - rework rom_path.diff, so this script can't build 3.8 any more
# - update man page, add new -4x3 option

# 20161017 bkw:
# - updated for 3.8
# - updated man page with new 3.8 options

# 20160729 bkw:
# - updated for 3.7
# - rom_path.diff now handles filenames longer than 20 characters.

# 20150506 bkw:
# - updated for 3.3. Lots of little changes, meaning the script
#   won't work for 2.9 any more.
# - stop the CRLF madness, extract with 'unzip -aa' and get rid of
#   the carriage returns in rom_path.diff.
# - get rid of POD warnings when making man page.

# 20140825 bkw:
# - updated for 2.9
# - include icon in slackbuild dir (upstream removed it from src tarball)
# - use ColEm.html from the source (upstream includes it now)
# - get rid of DISPLAY_BPP stuff, bpp is now detected at runtime,
#   tested same binary on 16bpp and 32bpp, doubt anyone still uses 8bpp
# - host source myself, since upstream doesn't keep old releases
# - convert man page to .pod, for easier editing
# - install binary in /usr/games, man page in section 6
# - don't unzip the system ROM to $CWD (it might be read-only)
# - support ROM images with alternate name os7.rom
# - clean up README formatting, get rid of bpp stuff, mention OSS audio
# - add a generic-icon to colem.xml, at least in XFCE this makes .col
#   files show up with the colem icon.
# - improve the .desktop file:
#   + don't display in the start menu (since a ROM argument is required)
#   + auto-associate with colecovision ROMs (as defined in colem.xml)
#   + run "aoss colem" to get audio working on a stock Slack 14.1 system
#     with OSS modules disabled by default.

PRGNAM=colem
VERSION=${VERSION:-4.6}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

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

CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

# Since we have to set endianness at compile-time, included a few
# extra ARCHes here (only i586 and x86_64 are actually tested, you're
# on your own with the others)
# alphaslack and armedslack are little-endian, caught by the default case.
if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
elif [ "$ARCH" = "s390" ]; then
  SLKCFLAGS="-O2"
  BIGENDIAN=yes
elif [ "$ARCH" = "sparc" ]; then
  SLKCFLAGS="-O2"
  BIGENDIAN=yes
elif [ "$ARCH" = "powerpc" ]; then
  SLKCFLAGS="-O2"
  BIGENDIAN=yes
else
  SLKCFLAGS="-O2"
fi

set -e

ZIPNAME="ColEm"
ZIPVER=${VERSION//./}

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
mkdir $PRGNAM-$VERSION
cd $PRGNAM-$VERSION
unzip -aa $CWD/$ZIPNAME$ZIPVER-Source.zip
chown -R root:root .
find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
  -o -perm 511 \) -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
 -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;

sed -i "s/-O2/$SLKCFLAGS/" EMULib/Rules.gcc

# Make the emulator look in /usr/share/colem and ~/.colem for the
# system ROMs, as well as the current directory. Without this, it's
# quite annoying to use colem from either the command line or KDE.
patch -p1 < $CWD/rom_path.diff

# Don't lie and say we support .zip files. There's no code to implement it,
# at least not in the *nix port.
sed -i 's,and PKZIPped ,,' ColEm/Help.h ColEm/ColEm.html

# Allow optional building without pulse.
if [ "${PULSE:-yes}" = "no" ]; then
  sed -i \
      -e 's,-DPULSE_AUDIO,,' \
      -e 's,-lpulse-simple,,' \
      EMULib/Rules.Unix
fi

cd $ZIPNAME/Unix

# ColEm.html claims that -DGIFLIB makes the F10 key save a GIF snapshot,
# but it's not actually implemented in ColEm-2.9. In 2.6 it was implemented
# only for MS-DOS.
#sed -i "/^DEFINES/s,-DCOLEM,& -DGIFLIB," Makefile

# I have no idea why 3.3 suddenly defaults to 16-bit colordepth. Does
# anyone still use less than 24-bit, this century? Getting rid of
# -DBPP32 gives us a binary that works in 16 and 32 bit depth.
sed -i "/^DEFINES/s,-DBPP..,," Makefile

# If PNG support actually *did* anything, this is how we'd enable it:
#sed -i "/^DEFINES/s,-DCOLEM,& -DLIBPNG," Makefile
#sed -i "/^LIBS/s,=,& -lpng," ../../EMULib/Rules.gcc

# Allow building on big-endian platforms (such as s390)
if [ "${BIGENDIAN:-no}" != "no" ]; then
  sed -i "/^DEFINES/s/-DLSB_FIRST/-DMSB_FIRST/" Makefile
fi

# Fix linking on ColEm-3.3 (same .o file given twice in link command)
sed -i '/^RECORD/d' ../../EMULib/Rules.gcc

make

# no 'make install', do it manually.
mkdir -p $PKG/usr/games
install -s -m0755 -oroot -groot $PRGNAM $PKG/usr/games

# Man page written by script author.
mkdir -p $PKG/usr/man/man6
gzip -9c < $CWD/$PRGNAM.6 > $PKG/usr/man/man6/$PRGNAM.6.gz

# Icon used to be distributed with the colem 2.6 source, as
# Maemo/Package/colem-64x64.png
mkdir -p $PKG/usr/share/pixmaps
cat $CWD/$PRGNAM.png > $PKG/usr/share/pixmaps/$PRGNAM.png

# .desktop file and mime .xml file originally taken from ColEm-Maemo
# sources and modified to get rid of the Maemo-specific stuff.
mkdir -p $PKG/usr/share/applications
cat $CWD/$PRGNAM.desktop > $PKG/usr/share/applications/$PRGNAM.desktop
if [ "${PULSE:-yes}" = "no" ]; then
  sed -i 's,^Exec=,&aoss ,' $PKG/usr/share/applications/$PRGNAM.desktop
fi

mkdir -p $PKG/usr/share/mime/packages
cat $CWD/$PRGNAM.xml > $PKG/usr/share/mime/packages/$PRGNAM.xml

# The ROM directory. Included even if there's no ROM in the package.
mkdir -p $PKG/usr/share/$PRGNAM

# Look for zipped ROM images and unzip them.
if [ -e $CWD/coleco.zip ]; then
  unzip -o $CWD/coleco.zip
elif [ -e $CWD/COLECO.ZIP ]; then
  unzip -o $CWD/COLECO.ZIP
fi

# Look for non-zipped ROM images, either unzipped above or in $CWD.
for i in coleco.rom COLECO.ROM os7.rom OS7.ROM; do
  [ -e $i ] && ROM=$i
  [ -e $CWD/$i ] && ROM=$CWD/$i
done

# If we found a ROM image, include it in the package.
[ -n "$ROM" ] && cat $ROM > $PKG/usr/share/$PRGNAM/coleco.rom

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
cat $CWD/README > $PKG/usr/doc/$PRGNAM-$VERSION/README

# HTML doc now included in the source tarball (didn't used to be).
cat ../$ZIPNAME.html > $PKG/usr/doc/$PRGNAM-$VERSION/$ZIPNAME.html

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:-tgz}