#!/bin/bash

# Slackware build script for zathura

# Copyright 2010 Binh Nguyen <email removed>
# Copyright 2024 B. Watson <urchlay@slackware.uk>
# 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.

# Note to self: run with BUILD_MAN=yes *once* per version update to
# regenerate the man pages (requires sphinx).

# 20240927 bkw: update for v0.5.8. turns out, upstream claims to
# require newer versions of pango, glib2, etc than the code actually
# needs. also, update for zathura-pdf-poppler 0.3.3.

# 20240319 bkw: update for v0.5.4 and zathura-pdf-poppler 0.3.2.
# These are the last versions that will build on Slackware 15.0
# due to newer versions needing a newer pango.

# 20230105 bkw: update for v0.5.1 and zathura-pdf-poppler 0.3.1.

# 20221114 bkw:
# - update for v0.5.1. zathura-pdf-poppler is still 0.3.0.
# - fix bash/zsh/fish completion.
# - change symlink name from pdf.so to libpdf.so (helps with completion).
# - make zathura-pdf-poppler optional.
# - update prebuilt man pages.
# - stop installing duplicate man pages if Sphinx is installed.

# 20210801 bkw:
# - update for v0.4.8 and -current. build uses meson now, so this script
#   can no longer build old zathura versions.
# - removed dlopen hack and synctex fix, since they're no longer needed.
# - this changelog was getting long, so move to ChangeLog.old.

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

PRGNAM=zathura
VERSION=${VERSION:-0.5.8}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

# zathura no longer includes PDF support in the core. Instead it uses
# plugins. This build includes the default PDF plugin, without which zathura
# is completely useless.
PLUGIN=$PRGNAM-pdf-poppler
PLUGINVER=${PLUGINVER:-0.3.3}

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

fixperms() {
  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 {} +
}

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
cd $PRGNAM-$VERSION
fixperms

# 20240928 bkw: Fix things up to work with 15.0's old meson
# and glib2 libraries. Upstream never bothers testing on versions
# older than they happen to have installed, for the libs. For
# meson, we're shipping prebuilt man pages anyway, and only
# doc/meson.build uses new meson syntax (install_symlink), so
# just don't use it.
sed -i -e '/meson_version/s,>=0\.61,>=0.59,' \
       -e '/glib-2.0/s,>=2.72,>=2.70,' \
       -e '/gthread-2.0/s,>=2.72,>=2.70,' \
       -e '/gmodule-no-export-2.0/s,>=2.72,>=2.70,' \
       -e '/^subdir(.doc.)/d' \
    meson.build

# 20240928 bkw: "Secret" maintainer-only mode. You shouldn't need this.
if [ "${BUILD_MAN:-no}" = "yes" ]; then
  echo "===> generating man pages in $CWD/man"
  mkdir -p $PKG/man
  sphinx-build -b man -D version=$VERSION -D release=$VERSION doc/man $CWD/man
  rm -rf $CWD/man/.doctrees
else
  echo "===> using prebuilt man pages in $CWD/man"
fi

# 20221114 bkw: Maik Wagner and Alexander Verbovetsky reported that
# fish and bash completion weren't working, due to the symlink I use
# to switch between the PDF plugins. This patch should fix it.
patch -p1 < $CWD/fix_completion.diff

mkdir build
cd build
  CFLAGS="$SLKCFLAGS" \
  CXXFLAGS="$SLKCFLAGS" \
  meson .. \
    --buildtype=release \
    --infodir=/usr/info \
    --libdir=/usr/lib${LIBDIRSUFFIX} \
    --localstatedir=/var \
    --mandir=/usr/man \
    --prefix=/usr \
    --sysconfdir=/etc \
    -Dstrip=true
  "${NINJA:=ninja}"
  DESTDIR=$PKG $NINJA install
cd ..

# man pages prebuilt on a Slackware box with Sphinx installed. I did
# this to avoid a dependency on Sphinx (and its tree of 21 deps).
rm -rf $PKG/usr/man # in case we had Sphinx already...
for i in $CWD/man/*.*; do
  dest="$PKG/usr/man/man$( echo $i | sed 's,.*\.,,' )"
  mkdir -p "$dest"
  gzip -9c < $i > "$dest/$( basename "$i" )".gz
done

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

# Include the API docs. Sphinx would be needed to build HTML or PDF docs, but
# the doc sources are RST, which are perfectly human-readable already (though
# less easy to navigate).
cp -a doc/api $PKGDOC

# Now build the plugin, unless the user disabled it.
if [ "${POPPLER:-yes}" != "no" ]; then
  INCLUDES="includes"
  cd $TMP
  rm -rf $PLUGIN-$PLUGINVER
  tar xvf $CWD/$PLUGIN-$PLUGINVER.tar.gz
  cd $PLUGIN-$PLUGINVER
  fixperms
  sed -i '/meson_version/s,>=0\.61,>=0.59,' meson.build

  export PKG_CONFIG_PATH=$PKG/usr/lib$LIBDIRSUFFIX/pkgconfig:$PKG_CONFIG_PATH

  mkdir build
  cd build
    CFLAGS="$SLKCFLAGS -I$PKG/usr/include" \
    CXXFLAGS="$SLKCFLAGS -I$PKG/usr/include" \
    meson .. \
      --buildtype=release \
      --infodir=/usr/info \
      --libdir=/usr/lib${LIBDIRSUFFIX} \
      --localstatedir=/var \
      --mandir=/usr/man \
      --prefix=/usr \
      --sysconfdir=/etc \
      -Dstrip=true \
      -Dplugindir=/usr/lib$LIBDIRSUFFIX/$PRGNAM/pdf
    "${NINJA:=ninja}"
    DESTDIR=$PKG $NINJA install
  cd ..

  ln -s pdf/libpdf-poppler.so $PKG/usr/lib$LIBDIRSUFFIX/$PRGNAM/libpdf.so
else
  # if we don't include the plugin, we still want the empty plugin dir.
  mkdir -p $PKG/usr/lib$LIBDIRSUFFIX/$PRGNAM
  INCLUDES="DOES NOT include"
fi

mkdir -p $PKG/install
sed "s,@INCLUDES@,$INCLUDES," $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
