#!/bin/sh
# $Id$
# Copyright 2010, 2011, 2013  Eric Hameleers, Eindhoven, NL
# All rights reserved.
#
#   Permission to use, copy, modify, and distribute this software for
#   any purpose with or without fee is hereby granted, provided that
#   the above copyright notice and this permission notice appear in all
#   copies.
#
#   THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 AUTHORS AND COPYRIGHT HOLDERS AND THEIR
#   CONTRIBUTORS 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.
# -----------------------------------------------------------------------------
#
# Slackware SlackBuild script 
# ===========================
# By:          Eric Hameleers <alien@slackware.com>
# For:         minidlna
# Descr:       DLNA (UPnP-AV) server
# URL:         http://minidlna.sourceforge.net/
# Needs:       ffmpeg
# Changelog:   
# 1.0.18-1:    20/Dec/2010 by Eric Hameleers <alien@slackware.com>
#              * Initial build.
# 20101223-1:  23/Dec/2010 by Eric Hameleers <alien@slackware.com>
#              * Update to a git build, since the release of 'stable' tarballs
#                seems to stagnate.
# 1.0.21-1:    11/aug/2011 by Eric Hameleers <alien@slackware.com>
#              * Update.
# 1.0.26-1:    20/jun/2013 by Eric Hameleers <alien@slackware.com>
#              * Update.
# 
# Run 'sh minidlna.SlackBuild' to build a Slackware package.
# The package (.tgz) and .txt file as well as build logs are created in /tmp .
# Install it using 'installpkg'. 
#
# -----------------------------------------------------------------------------

PRGNAM=minidlna
VERSION=${VERSION:-1.0.26}
#VERSION=${VERSION:-HEAD}
[ "$VERSION" = "HEAD"  ] && SRCVER=$(date +%Y%m%d) || SRCVER=$VERSION
BUILD=${BUILD:-1}
NUMJOBS=${NUMJOBS:" -j4 "}
TAG=${TAG:-alien}

DOCS="INSTALL LICENCE* README TODO"

# Where do we look for sources?
SRCDIR=$(cd $(dirname $0); pwd)

# Place to build (TMP) package (PKG) and output (OUTPUT) the program:
TMP=${TMP:-/tmp/build}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

SOURCE[0]="$SRCDIR/${PRGNAM}-${SRCVER}.tar.gz"
if [ "$VERSION" != "HEAD" ]; then
  SRCURL[0]="http://sourceforge.net/projects/${PRGNAM}/files/${PRGNAM}/${SRCVER}/${PRGNAM}-${SRCVER}.tar.gz/download"
else
  SRCURL[0]=""
fi

# Use the src_checkout() function if no downloadable tarball exists.
# This function checks out sources from SVN/CVS and creates a tarball of them.
src_checkout() {
  # Param #1 : index in the SOURCE[] array.
  # Param #2 : full path to where SOURCE[$1] tarball should be created.
  # Determine the tarball extension:
  PEXT=$(echo "${2}" | sed -r -e 's/.*[^.].(tar.xz|tar.gz|tar.bz2|tgz).*/\1/')
  case "$PEXT" in
    "tar.xz") TARCOMP="J" ;;
    "tar.gz") TARCOMP="z" ;;
    "tgz") TARCOMP="z" ;;
    "tar.bz2") TARCOMP="j" ;;
    *) echo "Archive can only have extension 'tar.xz', '.tar.gz' '.tar.bz2' or '.tgz'" ; exit 1 ;;
  esac
  # Determine the directory name to create for the archive root:
  PBASE=$(basename ${2} .${PEXT})
  # Determine the directory where we create our checkout:
  CODIR=$(dirname ${2})
  case ${1} in
  0) # CVS checkout:
     RETDIR=$(pwd)
     mkdir -p $CODIR/${PRGNAM}_temp_checkout_$$ \
       && cd $CODIR/${PRGNAM}_temp_checkout_$$
     cvs -d:pserver:anonymous@minidlna.cvs.sourceforge.net:/cvsroot/minidlna co -P minidlna \
       && mv minidlna ${PBASE} \
       && find ${PBASE} -type d -name '.cvs' -depth | xargs rm -rf \
       && chown -R root:root ${PBASE} \
       && tar -${TARCOMP}cf ${2} ${PBASE}
     cd $RETDIR
     rm -rf $CODIR/${PRGNAM}_temp_checkout_$$ || true
     ;;
  *) # Do nothing
     ;;
  esac
}

##
## --- with a little luck, you won't have to edit below this point --- ##
##

# Automatically determine the architecture we're building on:
MARCH=$( uname -m )
if [ -z "$ARCH" ]; then
  case "$MARCH" in
    i?86)    export ARCH=i486 ;;
    armv7hl) export ARCH=$MARCH ;;
    armv6hl) export ARCH=$MARCH ;;
    arm*)    export ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
    *)       export ARCH=$MARCH ;;
  esac
fi

case "$ARCH" in
  i486)      SLKCFLAGS="-O2 -march=i486 -mtune=i686"
             SLKLDFLAGS=""; LIBDIRSUFFIX=""
             ;;
  x86_64)    SLKCFLAGS="-O2 -fPIC"
             SLKLDFLAGS="-L/usr/lib64"; LIBDIRSUFFIX="64"
             ;;
  armv7hl)   SLKCFLAGS="-O2 -march=armv7-a -mfpu=vfpv3-d16"
             SLKLDFLAGS=""; LIBDIRSUFFIX=""
             ;;
  armv6hl)   SLKCFLAGS="-O2 -march=armv6 -mfpu=vfp -mfloat-abi=hard"
             SLKLDFLAGS=""; LIBDIRSUFFIX=""
             ;;
  *)         SLKCFLAGS="-O2"
             SLKLDFLAGS=""; LIBDIRSUFFIX=""
             ;;
esac

# Exit the script on errors:
set -e
trap 'echo "$0 FAILED at line ${LINENO}" | tee $OUTPUT/error-${PRGNAM}.log' ERR
# Catch unitialized variables:
set -u
P1=${1:-1}

# Save old umask and set to 0022:
_UMASK_=$(umask)
umask 0022

# Create working directories:
mkdir -p $OUTPUT          # place for the package to be saved
mkdir -p $TMP/tmp-$PRGNAM # location to build the source
mkdir -p $PKG             # place for the package to be built
rm -rf $PKG/*             # always erase old package's contents
rm -rf $TMP/tmp-$PRGNAM/* # remove the remnants of previous build
rm -rf $OUTPUT/{configure,make,install,error,makepkg}-$PRGNAM.log
                          # remove old log files

# Source file availability:
for (( i = 0; i < ${#SOURCE[*]}; i++ )) ; do
  if ! [ -f ${SOURCE[$i]} ]; then
    echo "Source '$(basename ${SOURCE[$i]})' not available yet..."
    # Check if the $SRCDIR is writable at all - if not, download to $OUTPUT
    [ -w "$SRCDIR" ] || SOURCE[$i]="$OUTPUT/$(basename ${SOURCE[$i]})"
    if [ -f ${SOURCE[$i]} ]; then echo "Ah, found it!"; continue; fi
    if ! [ "x${SRCURL[$i]}" == "x" ]; then
      echo "Will download file to $(dirname $SOURCE[$i])"
      wget -nv -T 20 -O "${SOURCE[$i]}" "${SRCURL[$i]}" || true
      if [ $? -ne 0 -o ! -s "${SOURCE[$i]}" ]; then
        echo "Fail to download '$(basename ${SOURCE[$i]})'. Aborting the build."
        mv -f "${SOURCE[$i]}" "${SOURCE[$i]}".FAIL
        exit 1
      fi
    else
      # Try if we have a SVN/CVS download routine for ${SOURCE[$i]}
      echo "Will checkout sources to $(dirname $SOURCE[$i])"
      src_checkout $i "${SOURCE[$i]}" \
        2>&1 > $OUTPUT/checkout-$(basename ${SOURCE[$i]}).log
    fi
    if [ ! -f "${SOURCE[$i]}" -o ! -s "${SOURCE[$i]}" ]; then
      echo "File '$(basename ${SOURCE[$i]})' not available. Aborting the build."
      exit 1
    fi
  fi
done

if [ "$P1" == "--download" ]; then
  echo "Download complete."
  exit 0
fi

# --- PACKAGE BUILDING ---

echo "++"
echo "|| $PRGNAM-$SRCVER"
echo "++"

cd $TMP/tmp-$PRGNAM
echo "Extracting the source archive(s) for $PRGNAM..."
for (( i = 0; i < ${#SOURCE[*]}; i++ )) ; do
  tar -xvf ${SOURCE[$i]}
done
cd ${PRGNAM} || cd ${PRGNAM}*

chown -R root:root .
chmod -R u+w,go+r-w,a+X-s .

echo Building ...
export LDFLAGS="$SLKLDFLAGS"
export CXXFLAGS="$SLKCFLAGS"
export CFLAGS="$SLKCFLAGS"
# More tweaks:
sed -i \
  -e "s#-O3 #${SLKCFLAGS} -I/usr/include/ffmpeg/#" \
  -e '/^minidlna/s/ *$(LIBS)//' \
  Makefile
make PREFIX=/usr 2>&1 | tee $OUTPUT/make-${PRGNAM}.log

# Build language catalogs :
( cd po
  for catsrc in *.po; do
    lang="${catsrc%.po}"
    msgfmt -o "$lang.mo" "$catsrc"
  done
)

# Install the lot:
make DESTDIR=$PKG install 2>&1 | tee $OUTPUT/install-${PRGNAM}.log
make DESTDIR=$PKG install-conf 2>&1 | tee -a $OUTPUT/install-${PRGNAM}.log

# Install language catalogs:
( cd po
  for catalog in *.mo; do
    lang="${catalog%.mo}"
    install -d -m 0755 $PKG/usr/share/locale/${lang}/LC_MESSAGES
    install -m 0644 $catalog $PKG/usr/share/locale/${lang}/LC_MESSAGES/minidlna.mo
  done
)

# Create cache and log directories:
mkdir -p $PKG/var/{cache,log}
install -d -m 0755 $PKG/var/cache//${PRGNAM}/
install -d -m 0755 $PKG/var/log/${PRGNAM}/

# Do not clobber an existing configuration:
mv $PKG/etc/minidlna.conf{,.new}

# Add this to the doinst.sh:
mkdir -p $PKG/install
cat <<EOINS >> $PKG/install/doinst.sh
# Handle the incoming configuration files:
config() {
  for infile in \$1; do
    NEW="\$infile"
    OLD="\`dirname \$NEW\`/\`basename \$NEW .new\`"
    # If there's no config file by that name, mv it over:
    if [ ! -r \$OLD ]; then
      mv \$NEW \$OLD
    elif [ "\`cat \$OLD | md5sum\`" = "\`cat \$NEW | md5sum\`" ]; then
      # toss the redundant copy
      rm \$NEW
    fi
    # Otherwise, we leave the .new copy for the admin to consider...
  done
}

# An example of how you handle your '.new' config files:
config etc/minidlna.conf.new

EOINS

# Add documentation:
mkdir -p $PKG/usr/doc/$PRGNAM-$SRCVER
cp -a $DOCS $PKG/usr/doc/$PRGNAM-$SRCVER || true
cat $SRCDIR/$(basename $0) > $PKG/usr/doc/$PRGNAM-$SRCVER/$PRGNAM.SlackBuild
chown -R root:root $PKG/usr/doc/$PRGNAM-$SRCVER
find $PKG/usr/doc -type f -exec chmod 644 {} \;

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

# Add a package description:
mkdir -p $PKG/install
cat $SRCDIR/slack-desc > $PKG/install/slack-desc
cat $SRCDIR/slack-required > $PKG/install/slack-required

# Build the package:
cd $PKG
makepkg --linkadd y --chown n $OUTPUT/${PRGNAM}-${SRCVER}-${ARCH}-${BUILD}${TAG}.${PKGTYPE:-tgz} 2>&1 | tee $OUTPUT/makepkg-${PRGNAM}.log
cd $OUTPUT
md5sum ${PRGNAM}-${SRCVER}-${ARCH}-${BUILD}${TAG}.${PKGTYPE:-tgz} > ${PRGNAM}-${SRCVER}-${ARCH}-${BUILD}${TAG}.${PKGTYPE:-tgz}.md5
cd -
cat $PKG/install/slack-desc | grep "^${PRGNAM}" > $OUTPUT/${PRGNAM}-${SRCVER}-${ARCH}-${BUILD}${TAG}.txt
cat $PKG/install/slack-required > $OUTPUT/${PRGNAM}-${SRCVER}-${ARCH}-${BUILD}${TAG}.dep

# Restore the original umask:
umask ${_UMASK_}