#!/bin/sh
# Heavily based on the Slackware 13.1 SlackBuild
# http://mp3gain.sourceforge.net/
# Packagers Andrea Sciucca ( gohanz at infinito.it)
# Thanks to B. Watson (yalhcru@gmail.com)
# http://www.slacky.eu
#
# 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.
#
#
#
# Exit on most errors
set -e

# Set variables:
CWD=`pwd`
OUTPUT=${OUTPUT:-$CWD}
PKGNAME=mp3gain
TMP=${TMP:-/tmp/txz/$PKGNAME}
PKG=$TMP/package
VERSION=${VERSION:-1.4.6}
SRCVER=$( echo $VERSION | sed 's/\./_/g' )
ARCH=${ARCH:-i486}
JOBS=${JOBS:--j2}
BUILD=${BUILD:-1}
TAG=${TAG:-sl}

# Download sorce tarball if still not present
SOURCE="http://downloads.sourceforge.net/mp3gain/$PKGNAME-$SRCVER-src.zip"

if [ ! -e $CWD/$PKGNAME-$SRCVER-src.zip ]; then
 wget $SOURCE
fi


# Set compiling FLAGS
if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"; SLKLDFLAGS=""; LIBDIRSUFFIX=""; CHOST="i486"
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"; SLKLDFLAGS=""; LIBDIRSUFFIX=""; CHOST="i686"
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"; SLKLDFLAGS="-L/usr/lib64"; LIBDIRSUFFIX="64"; CHOST="x86_64"
fi

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT

# Decompress the source tarball
cd $TMP
unzip -o $CWD/$PKGNAME-$SRCVER-src.zip

echo -e "\E[0;32m+--------------------------+\E[0;0m"
echo -e "\E[0;32m| Start SlackBuild MP3Gain |\E[0;0m"
echo -e "\E[0;32m+--------------------------+\E[0;0m"

# Adjust permissions and ownerships
chown -R root:root .
chmod -R u+w,go+r-w,a-s .


# Set our CFLAGS
sed -i -e "s/-O3/$SLKCFLAGS/" Makefile

# Building MP3Gain package
make $JOBS
install -m 755 -p -D mp3gain $PKG/usr/bin/mp3gain

#Add documentation files: readme, changelog and so on
mkdir -p $PKG/usr/doc/$PKGNAME-$VERSION/SlackBuild
cp -a lgpl.txt \
$PKG/usr/doc/$PKGNAME-$VERSION
chmod 644 $PKG/usr/doc/$PKGNAME-$VERSION/*



# Also add the slack-desk file and this slackbuild to the package
mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
cat $CWD/slack-desc > $PKG/usr/doc/$PKGNAME-$VERSION/SlackBuild/slack-desc
cat $CWD/$PKGNAME.SlackBuild > $PKG/usr/doc/$PKGNAME-$VERSION/SlackBuild/$PKGNAME.SlackBuild


# Installing manpage
install -m 644 -p -D $CWD/mp3gain.1 $PKG/usr/man/man1/mp3gain.1


# Compress the man pages if present
if [ -d $PKG/usr/man ]; then
    ( cd $PKG/usr/man
      find . -type f -exec gzip -9 {} \;
      for i in $( find . -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done
    )
fi



# Find and print dependencies into slack-required file
cd $PKG
chown -R root:root $PKG
if [ -x /usr/bin/requiredbuilder ];then
requiredbuilder -y -v -s  $CWD $PKG
fi
# Create txz package
/sbin/makepkg -l y -c n $OUTPUT/$PKGNAME-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-txz}


# Cleanup if enabled
if [ "$1" = "--cleanup" ]; then
 rm -rf $TMP
fi

