#!/bin/bash

# Slackware build script for fbpdf

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

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

# 20210927 bkw:
# - update to latest git (20200617_f590024).
# - rework navigation.diff for this version.
# - use upstream's man page, now that there is one (but, patch it).
# - mupdf-legacy no longer needed, change optional dep to mupdf.
# - add MUPDF=no option.
# - update README and slack-desc.
# - add git2tarxz.sh, for future updates. upstream doesn't do releases.
# - actually use SLKCFLAGS.
# 20200218 bkw: mupdf got updated to an incompatible version, use mupdf-legacy.
# 20170313 bkw: update for 20161202 (commit e31a61b), need due to mupdf update.

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

PRGNAM=fbpdf
VERSION=${VERSION:-20200617_f590024}
BUILD=${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

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

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

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

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.xz
cd $PRGNAM-$VERSION
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 {} \+

# 20210929 bkw: actually use the flags.
sed -i "s,-O2,$SLKCFLAGS," Makefile

# The navigation patch has been sent upstream. In my opinion, fbpdf is
# needlessly difficult to use without it. Upstream never responded to
# my email (not even to say "no"). It's staying here though.
# The manpage patch explains the difference between fbpdf, fbpdf2, fjdjvu.
if [ "${PRISTINE:-no}" != "yes" ]; then
  patch -p1 < $CWD/navigation.diff
  patch -p1 < $CWD/manpage.diff
fi

mkdir -p $PKG/usr/bin

# always build these two.
make ${PRGNAM}2 fbdjvu
install -s -m0755 ${PRGNAM}2 $PKG/usr/bin
install -s -m0755 fbdjvu $PKG/usr/bin

WITH="WITHOUT"

# autodetect mupdf, build fbpdf if found
if [ "${MUPDF:-yes}" = "yes" ] && pkg-config --exists mupdf; then
  WITH="WITH"
  # mupdf API keeps changing
  sed -i \
    -e '/^CFLAGS/s,$, $(shell pkg-config --cflags mupdf),' \
    -e 's,-lmupdf -lmupdf-third.*,$(shell pkg-config --libs mupdf) -lharfbuzz,' \
    Makefile

  make clean
  make $PRGNAM
  install -s -m0755 $PRGNAM $PKG/usr/bin
fi

PKGMAN1=$PKG/usr/man/man1
mkdir -p $PKGMAN1
gzip -9c < $PRGNAM.1 > $PKGMAN1/$PRGNAM.1.gz
ln -s $PRGNAM.1.gz $PKGMAN1/${PRGNAM}2.1.gz
ln -s $PRGNAM.1.gz $PKGMAN1/fbdjvu.1.gz

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

mkdir -p $PKG/install
sed "s,@WITH@,$WITH," < $CWD/slack-desc > $PKG/install/slack-desc

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