#!/bin/bash

# Copyright 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2016, 2017, 2018, 2021  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=ghostscript
if [ -r gnu-ghostscript-*.tar.?z ]; then
  SRCPREFIX="gnu-"
fi
VERSION=${VERSION:-$(echo $SRCPREFIX$PKGNAM-*.tar.?z | rev | cut -f 3- -d . | cut -f 1 -d - | rev)}
BUILD=${BUILD:-1}

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) export ARCH=i586 ;;
    arm*) export ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
       *) export ARCH=$( uname -m ) ;;
  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-$VERSION-$ARCH-$BUILD.txz"
  exit 0
fi

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

TMP=${TMP:-/tmp}
PKG=$TMP/package-${PKGNAM}
rm -rf $PKG
mkdir -p $TMP $PKG

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "s390" ]; then
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

cd $TMP
rm -rf ${SRCPREFIX}${PKGNAM}-${VERSION}
tar xvf $CWD/${SRCPREFIX}${PKGNAM}-$VERSION.tar.?z || exit 1
cd ${SRCPREFIX}${PKGNAM}-$VERSION || exit 1

# Remove unmaintained garbage:
rm -rf freetype jpeg lcms2 libpng libtiff png tiff zlib

# Regenerate ./configure.  Needed if patched, or to prevent libtool mismatch.
autoreconf --force --install
( cd jbig2dec ; autoreconf --force --install )
( cd ijs ; autoreconf --force --install )

# Make sure ownerships and permissions are sane:
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 {} \+

# Build/install IJS:
( cd ijs
  CFLAGS="$SLKCFLAGS" \
  ./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --sysconfdir=/etc \
  --mandir=/usr/man \
  --enable-shared=yes \
  --enable-static=no \
  --program-prefix= \
  --program-suffix= \
  --build=$ARCH-slackware-linux || exit 1
  make $NUMJOBS || make || exit 1
  make install || exit 1
  make install DESTDIR=$PKG || exit 1
) || exit 1

# Configure:
CFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --sysconfdir=/etc \
  --mandir=/usr/man \
  --docdir=/usr/share/ghostscript/$VERSION/tmpdoc \
  --with-fontpath=/usr/share/fonts/TTF \
  --with-ijs \
  --disable-compile-inits \
  --enable-dynamic \
  --with-system-libtiff \
  --enable-cups \
  --program-prefix= \
  --program-suffix= \
  --build=$ARCH-slackware-linux || exit 1

# Build and install:
make $NUMJOBS || make || exit 1
make install DESTDIR=$PKG || exit 1
make clean || exit 1
make $NUMJOBS so || make so || exit 1
make soinstall DESTDIR=$PKG || exit 1

# Add back ijs-config, which is needed by at least gutenprint to find IJS
# and produce a ghostscript driver:
cat $CWD/ijs-config | sed -e "s/lib64/lib${LIBDIRSUFFIX}/g" > $PKG/usr/bin/ijs-config
chmod 755 $PKG/usr/bin/ijs-config

# Replace the default cidfmap with one containing additional
# support for CJK printing:

if [ -r $PKG/usr/share/ghostscript/*.*/Resource/Init/cidfmap ]; then
  SHARE_VERSION=$(echo $PKG/usr/share/ghostscript/*.*/Resource/Init/cidfmap | rev | cut -f 4 -d / | rev)
  mv $PKG/usr/share/ghostscript/${SHARE_VERSION}/Resource/Init/cidfmap $PKG/usr/share/ghostscript/${SHARE_VERSION}/Resource/Init/cidfmap.default.ghostscript-${VERSION}
  zcat $CWD/cidfmap.gz > $PKG/usr/share/ghostscript/${SHARE_VERSION}/Resource/Init/cidfmap.new
fi

# Strip binaries:
( cd $PKG
  find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
  find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
)

# Don't ship .la files:
pushd $PKG
  for lafile in usr/lib${LIBDIRSUFFIX}/*.la ; do
    rm -f ${lafile} /${lafile}
  done
popd

# 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

# Compress info files, if any:
if [ -d $PKG/usr/info ]; then
  ( cd $PKG/usr/info
    rm -f dir
    gzip -9 *
  )
fi

# gs9.23 fails if you try to have --docdir put things in the proper place.
# Not much choice but to have things put in the wrong place and then move them.
# First, remove broken symlinks:
rm -f $PKG/usr/share/ghostscript/$VERSION/doc $PKG/usr/share/ghostscript/$VERSION/tmpdoc/$VERSION/$VERSION
# Then, move the docs to the proper location:
mv $PKG/usr/share/ghostscript/$VERSION/tmpdoc/$VERSION $PKG/usr/share/ghostscript/$VERSION/doc
# Remove this (probably empty) directory:
rm -rf $PKG/usr/share/ghostscript/$VERSION/tmpdoc
# And finally, pray for upstream to quit drinking while coding. ;-)

# Add a documentation directory:
mkdir -p $PKG/usr/doc/${PKGNAM}-$VERSION
( cd doc
  cp -a \
    AUTHORS COPYING* ../LICENSE* README* \
    $PKG/usr/doc/${PKGNAM}-$VERSION
)
( cd $PKG/usr/doc/${PKGNAM}-$VERSION
  ln -sf /usr/share/ghostscript/$VERSION/doc doc
)

# Version 9.02 fails to install History9.htm, but also the full unabridged
# history of Ghostscript is not required here.  See the source for that.
( cd doc
  cp -a \
    History*.htm \
    $PKG/usr/share/ghostscript/$VERSION/doc
  rm -f $PKG/usr/share/ghostscript/$VERSION/doc/History{1,2,3,4,5,6,7,8}.htm
  # More cruft:
  rm -f $PKG/usr/share/ghostscript/$VERSION/doc/Details{1,2,3,4,5,6,7,8}.htm
  # This is also bloat:
  rm -f $PKG/usr/share/ghostscript/$VERSION/doc/*.pdf
  chown root:root $PKG/usr/share/ghostscript/$VERSION/doc/History*htm
  chmod 644 $PKG/usr/share/ghostscript/$VERSION/doc/History*htm
)

# Install example files:
rm -rf $PKG/usr/share/ghostscript/${VERSION}/examples
cp -a $TMP/${PKGNAM}-${VERSION}/examples $PKG/usr/share/ghostscript/${VERSION}

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
cat << EOF > $PKG/install/doinst.sh
#!/bin/bash
config() {
  NEW="\$1"
  OLD="\$(dirname \$NEW)/\$(basename \$NEW .new)"
  # If there's no config file by that name, mv it over:
  if [ ! -r \$OLD ]; then
    mv \$NEW \$OLD
  elif [ "\$(cat \$OLD | md5sum)" = "\$(cat \$NEW | md5sum)" ]; then # toss the redundant copy
    rm \$NEW
  fi
  # Otherwise, we leave the .new copy for the admin to consider...
}
config usr/share/ghostscript/${VERSION}/Resource/Init/cidfmap.new
EOF

cd $PKG
/sbin/makepkg -l y -c n $TMP/${PKGNAM}-$VERSION-$ARCH-$BUILD.txz