#!/bin/bash
ulimit -s unlimited
shopt -s extglob

# rpm2tgz.SlackBuild
# Heavily based on the original Slackware build scripts,
# Modified by Stuart Winter <mozes@slackware.com>

# Record toolchain & other info for the build log:
slackbuildinfo

# Paths to skeleton port's source & real Slackware source tree:
slackset_var_cwds

# Temporary build locations:
export TMPBUILD=$TMP/build-$PKGNAM
export PKG=$TMP/package-$PKGNAM
mkpkgdirs # Delete & re-create temporary directories then cd into $TMPBUILD

# Build:
cc $SLKCFLAGS -o rpmoffset $CWD/rpmoffset.c || failmake

# Install into package:
mkdir -p $PKG/usr/{bin,/doc/$PKGNAM}
install -m755 rpmoffset $PKG/usr/bin
install -m755 $CWD/rpm2targz $PKG/usr/bin

# Apply some patches:
( cd $PKG/usr/bin
  # These are all against "rpm2tgz", so mv it until we are done patching:
  mv rpm2targz rpm2tgz
  zcat $CWD/patches/0001-fix-d-handling.patch.gz | patch -p1 || exit 1
  zcat $CWD/patches/0002-fix-spurious-path-to-rpm-file-with-n-option.patch.gz | patch -p1 || exit 1
  zcat $CWD/patches/0003-allow-every-user-to-use-rpm2tgz.patch.gz | patch -p1 || exit 1
  zcat $CWD/patches/0004-produce-more-compliant-slack-desc.patch.gz | patch -p1 || exit 1
  # Not applied.  Rationale:  We do not want to alter the files in the RPM.
  #zcat $CWD/patches/0005-gzip-man-info-pages.patch.gz | patch -p1 || exit 1
  # Not applied.  Rationale:  .tgz works with all versions of Slackware.
  # Translated RPMs may be targeting systems with no .txz support.
  #zcat $CWD/patches/0006-should-we-use-.txz-format-in-slackware-current.patch.gz | patch -p1 || exit 1
  # OK, I will take this version of the patch, as it doesn't change the
  # default behaviour of rpm2tgz.
  # mv the script back (wow, this is rather random ;-)
  mv rpm2tgz rpm2targz
  zcat $CWD/patches/0007-Add-support-for-.txz-packages-and-rpm2txz-symlink.patch.gz | patch -p1 || exit 1
  zcat $CWD/patches/0008-Avoid-none-values-in-slack-desc.patch.gz | patch -p1 || exit 1
  zcat $CWD/patches/0009-Add-c-option-just-as-makepkg-c-y.patch.gz | patch -p1 || exit 1
  # Allow ignoring rpm2cpio error code. Some RPMs can be extracted, but
  # throw an error anyway.
  zcat $CWD/patches/0011-ignore-rpm2cpio-error-code.patch.gz | patch -p1 || exit 1
) || exit 1

( cd $PKG/usr/bin ; ln -sf rpm2targz rpm2tgz )
( cd $PKG/usr/bin ; ln -sf rpm2targz rpm2txz )
chmod 755 $PKG/usr/bin/{rpmoffset,rpm2targz}

# Copy docs:
cp -favv $CWD/rpm2targz.README \
          $PKG/usr/doc/$PKGNAM/

# Apply generic Slackware packaging policies:
cd $PKG
slackstripall   # strip all .a archives and all ELFs
slack_delete_lafiles # delete usr/lib{,64}/*.la
#slackstriprpaths     # strip rpaths
slackgzpages -i # compress man & info pages and delete usr/info/dir
slackslack      # chown -R root:root, chmod -R og-w, slackchown, slack644docs
slackdesc       # install slack-desc and doinst.sh
slackmp         # run makepkg -l y -c n

# Perform any final checks on the package:
cd $PKG
slackhlinks     # search for any hard links