#!/bin/bash

# Slackware build script for xar

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

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

# Notes:

# Man page says xar is no longer actively developed. I added this to
# SBo in order to extract old archives I ran into, so this doesn't
# bother me.

# The original google code project is dead, and so is mackyle's github
# project. The Apple github project might be deprecated, but it's
# still being updated (as of September 2024).

# For some reason, gentoo and other distros want to give this version
# numbers like "1.8.0.0.452". Dunno where the extra zeroes come from.
# "xar --version" reports "1.8dev", the tarball's version number
# is the SVN revision (452, 498, etc).

# 20241123 bkw: update for v501 (needed a new patch).
# 20231118 bkw: update for v498.

# 20230711 bkw: no script changes, just a note to myself: there's now
# a 496 tag, and it won't compile either.

# 20230106 bkw: apple quit hosting their own tarball, old URL is now
# a redirect to a github generated one, script has to change to handle it.

# 20221229 bkw: this is still being developed, code is at
# https://github.com/apple-oss-distributions/xar/ but the latest tag
# (494) won't compile, and I don't love this enough to spend time on
# it right now. If it bothers you, fix it and send me a patch.

# 20221229 bkw: BUILD=2, strip library (derp!)

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

PRGNAM=xar
VERSION=${VERSION:-1.8dev+501}
BUILD=${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

SRCVER="$( echo $VERSION | cut -d+ -f2 )"

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

cd $PRGNAM

# Most of these patches came from liguros:
# https://gitlab.com/liguros/liguros-repo/-/tree/stable/app-arch/xar

# 20241123 bkw: their xar_lib_archive_c.patch is *wrong*! It will
# indeed let xar compile, but it won't let xar_fdopen_digest_verify()
# work correctly (it would always return NULL, because fcntl() would
# fail since there's no such thing as cmd #50 on Linux).

# I added my own (hopefully) correct f_getpath_replacement.diff instead.
# Note that nothing in the xar application itself ever calls
# xar_fdopen_digest_verify(); it's part of the API for libxar, for
# other software to use. So I haven't really tested the patch, though
# did thoroughly test its fd2path() function.

for i in $( cat $CWD/patches/series ); do
  patch -p1 < $CWD/patches/$i
done

# This bit comes from liguros's xar-498.ebuild.
sed -i 's/__APPLE__/__NO_APPLE__/' lib/hash.c lib/archive.h
cp lib/*.h include

# Make #include <xar/xar.h> include the one in the build dir, not
# any system-wide one in /usr/include.
mkdir include/xar
ln -sf ../xar.h include/xar/xar.h

# -I doesn't affect #include "blah.h".
sed -i 's,"\(\(util\|filetree\)\.h\)",<\1>,' src/xar.c

# xar executable, library, and includes. have to manually add
# openssl's libs, and jigger the include path for <util.h> and
# <filetree.h>.
sh autogen.sh --noconfigure

LIBS="$( pkg-config --libs openssl )" \
CFLAGS="$SLKCFLAGS -Wl,-s -I$(pwd)/lib" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --mandir=/usr/man \
  --docdir=/usr/doc/$PRGNAM-$VERSION \
  --disable-static \
  --build=$ARCH-slackware-linux

make
make install DESTDIR=$PKG
gzip $PKG/usr/man/man?/*
rm -f $PKG/usr/lib*/*.la
strip $PKG/usr/lib*/*.so*

cd -

PKGDOC=$PKG/usr/doc/$PRGNAM-$VERSION
mkdir -p $PKGDOC
cp -a README xar.txt xar/{ChangeLog,LICENSE,TODO} $PKGDOC
cat $CWD/$PRGNAM.SlackBuild > $PKGDOC/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

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