#!/bin/bash

# Copyright 2008, 2009, 2012, 2018, 2021, 2023, 2024  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.

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

PKGNAM=x3270
TARBVER=${TARBVER:-$(echo $PKGNAM-*.tar.?z* | rev | cut -f 3- -d . | cut -f 1 -d - | rev)}
VERSION=$(echo $TARBVER | cut -f 1,2 -d .)
BUILD=${BUILD:-1}

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$(uname -m)" in
    i?86) ARCH=i586 ;;
    arm*) readelf /usr/bin/file -A | grep -E -q "Tag_CPU.*[4,5]" && ARCH=arm || ARCH=armv7hl ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
    *) ARCH=$(uname -m) ;;
  esac
  export ARCH
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-$TARBVER-$ARCH-$BUILD.txz"
  exit 0
fi

if [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=pentium4 -mtune=generic"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -march=x86-64 -mtune=generic -fPIC"
  LIBDIRSUFFIX="64"
elif [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

NUMJOBS=${NUMJOBS:-" -j$(expr $(nproc) + 1) "}

TMP=${TMP:-/tmp}
PKG=$TMP/package-x3270

rm -rf $PKG
mkdir -p $TMP $PKG
cd $TMP
rm -rf x3270-$VERSION
tar xvf $CWD/x3270-$TARBVER.tar.?z* || exit 1
cd x3270-$VERSION || exit 1
chown -R root:root .
find . \
  \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
  -exec chmod 755 {} \+ -o \
  \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
  -exec chmod 644 {} \+

# Add AArch64 architecture (and new architectures):
\cp /usr/share/libtool/build-aux/config.* .

CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --sysconfdir=/etc/X11 \
  --localstatedir=/var \
  --docdir=/usr/doc/$PKGNAM-$VERSION \
  --mandir=/usr/man \
  --infodir=/usr/info \
  --with-fontdir=/usr/share/fonts/misc \
  --disable-static \
  --disable-b3270 \
  --disable-c3270 \
  --disable-pr3287 \
  --disable-s3270 \
  --disable-tcl3270 \
  --build=$ARCH-slackware-linux || exit 1

make $NUMJOBS || make || exit 1
make install DESTDIR=$PKG || exit 1
make install.man DESTDIR=$PKG || exit 1

mv $PKG/etc/X11/x3270/ibm_hosts $PKG/etc/X11/x3270/ibm_hosts.new

find $PKG -name fonts.dir -exec rm {} \+
find $PKG -name .gitignore -exec rm {} \+

mkdir -p $PKG/etc/X11/app-defaults
cat x3270/fb-x3270 > $PKG/etc/X11/app-defaults/X3270

find $PKG | xargs file | grep -e "executable" -e "shared object" \
  | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null

# Compress manual pages:
find $PKG/usr/man -type f -exec gzip -9 {} \+
for i in $( find $PKG/usr/man -type l ) ; do
  ln -s $( readlink $i ).gz $i.gz
  rm $i
done

# Most of these docs are gone, but we'll keep trying ;-)
mkdir -p $PKG/usr/doc/x3270-$TARBVER
cp -a \
  x3270/LICENSE* x3270/README* x3270/Examples \
  README* \
  $PKG/usr/doc/x3270-$TARBVER
# If there's no LICENSE, we do need to do something about that:
if [ ! -r $PKG/usr/doc/x3270-$TARBVER/LICENSE ]; then
  sed -n '3,28p;28q' x3270/conf.h > $PKG/usr/doc/x3270-$TARBVER/LICENSE
fi
## COMMENTED OUT as there doesn't seem to be anything useful here any more:
# Dereference symbolic links while copying html docs:
mkdir -p $PKG/usr/doc/x3270-$TARBVER/html
( cd x3270/html
  for file in * ; do
    cp -a $(readlink -f $file) $PKG/usr/doc/x3270-$TARBVER/html/$file
  done
)

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

cd $PKG
/sbin/makepkg -l y -c n $TMP/x3270-$TARBVER-$ARCH-$BUILD.txz