#!/bin/bash

# Copyright 2024  Patrick J. Volkerding, Sebeka, Minnesota, 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=fontconfig
VERSION=${VERSION:-$(echo $PKGNAM-*.tar.?z | rev | cut -f 3- -d . | cut -f 1 -d - | rev)}
BUILD=${BUILD:-3}

# 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 | egrep -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-$VERSION-$ARCH-$BUILD.txz"
  exit 0
fi

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

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 [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
else
  SLKCFLAGS=${SLKCFLAGS:-"-O2"}
  LIBDIRSUFFIX=${LIBDIRSUFFIX:-""}
fi

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

rm -rf $PKG
mkdir -p $TMP $PKG

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

# Patches from Fedora and Debian:
cat $CWD/patches/02_indic_names.patch | patch -p1 --verbose || exit 1
cat $CWD/patches/04_mgopen_fonts.patch | patch -p1 --verbose || exit 1
cat $CWD/patches/disable-crbug1004354.patch | patch -p1 --verbose || exit 1
cat $CWD/patches/fontconfig-sleep-less.patch | patch -p1 --verbose || exit 1
cat $CWD/patches/fontconfig-remove-uuid.patch | patch -p1 --verbose || exit 1
cat $CWD/patches/fontconfig-drop-lang-from-pkgkit-format.patch | patch -p1 --verbose || exit 1
cat $CWD/patches/fontconfig-fix-SAST.patch | patch -p1 --verbose || exit 1

# Hardcode the default font search path rather than having fontconfig figure
# it out (and possibly follow symlinks, or index ugly bitmapped fonts):
cat $CWD/fontconfig.font.dir.list.diff | patch -p1 --verbose || exit 1

# Prefer the Hack font for monospace. Thanks to Didier Spaier of Slint for
# the patch:
cat $CWD/fontconfig.hack.for.monospace.diff | patch -p1 --verbose || exit 1

# Some "no bitmap" conf files from Fedora. We'll include them but won't be
# enabling them.
cat $CWD/fontconfig.70.no.bitmaps.conf.diff | patch -p1 --verbose || exit 1

# Prefer Liberation for sans and serif, as we have for many years:
cat $CWD/fontconfig.liberation.diff | patch -p1 --verbose || exit 1

export CFLAGS="$SLKCFLAGS"
export CXXFLAGS="$SLKCFLAGS"
mkdir meson-build
cd meson-build
  meson setup \
    --prefix=/usr \
    --libdir=/usr/lib${LIBDIRSUFFIX} \
    --mandir=/usr/man \
    --datadir=/usr/share \
    --sysconfdir=/etc \
    --localstatedir=/var \
    --buildtype=release \
    -D cache-build=disabled \
    -D default-hinting=medium \
    -D default-sub-pixel-rendering=none \
    -D doc-html=disabled \
    -D doc-pdf=disabled \
    -D doc-txt=disabled \
  .. || exit 1
  "${NINJA:=ninja}" $NUMJOBS || exit 1
  DESTDIR=$PKG $NINJA install || exit 1
cd ..

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

mkdir -p $PKG/var/log/setup
cat $CWD/setup.05.fontconfig > $PKG/var/log/setup/setup.05.fontconfig
chmod 755 $PKG/var/log/setup/setup.05.fontconfig

# 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

# Not convinced.
#( cd $PKG/etc/fonts/conf.d ; ln -sf ../../../usr/share/fontconfig/conf.avail/70-no-bitmaps-except-emoji.conf . )

# We did not previously link a hinting, subpixel, or lcdfilter conf file.
# Let's not do that here, either. Let the user choose to link that themselves
# without every fontconfig update stomping on it:
rm -f $PKG/etc/fonts/conf.d/10-hinting-*
rm -f $PKG/etc/fonts/conf.d/10-sub-pixel-*
rm -f $PKG/etc/fonts/conf.d/11-lcdfilter-*

# You can shop for this kind of stuff in the source tarball.
rm -rf $PKG/usr/share/doc

# Add a documentation directory:
mkdir -p $PKG/usr/doc/${PKGNAM}-$VERSION
cp -a \
  ABOUT-NLS* AUTHORS* COPYING* ChangeLog INSTALL* NEWS* README* \
  $PKG/usr/doc/${PKGNAM}-$VERSION

# If there's a ChangeLog, installing at least part of the recent history
# is useful, but don't let it get totally out of control:
if [ -r ChangeLog ]; then
  DOCSDIR=$(echo $PKG/usr/doc/${PKGNAM}-$VERSION)
  cat ChangeLog | head -n 1000 > $DOCSDIR/ChangeLog
  touch -r ChangeLog $DOCSDIR/ChangeLog
fi

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 $TMP/$PKGNAM-$VERSION-$ARCH-$BUILD.txz