#!/bin/bash
#url: http://libdv.sourceforge.net/

######Begin Redundant Code######################################
#This is the reason a universal wrapper script is needed

check_for_root() {
        [ ! "$UID" = "0" ] && echo "You need to be root" && exit 1
}

set_pre_permissions() {
        cd $startdir/src
        find . -perm 664 -exec chmod 644 {} \;
        find . -perm 600 -exec chmod 644 {} \;
        find . -perm 444 -exec chmod 644 {} \;
        find . -perm 400 -exec chmod 644 {} \;
        find . -perm 440 -exec chmod 644 {} \;
        find . -perm 777 -exec chmod 755 {} \;
        find . -perm 775 -exec chmod 755 {} \;
        find . -perm 511 -exec chmod 755 {} \;
        find . -perm 711 -exec chmod 755 {} \;
        find . -perm 555 -exec chmod 755 {} \;
}

strip_binaries() {
        cd $startdir/pkg
        find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | \
        xargs strip --strip-unneeded 2> /dev/null
        find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | \
        xargs strip --strip-unneeded 2> /dev/null
}

gzip_man_and_info_pages() {
        for DOCS in man info; do
                if [ -d "$startdir/pkg/usr/$DOCS" ]; then
                        for DIRECTORY in $(ls $startdir/usr/$DOCS); do
                                cd $startdir/usr/$DOCS/$DIRECTORY
                                gzip -9 *
                        done
                fi
        done
}

set_post_permissions() {
        if [ -d "$startdir/pkg/usr/bin" ]; then
                chown -R root:root $startdir/pkg/usr/bin
        fi
}

copy_build_script() {
        mkdir -p $startdir/pkg/usr/src/$pkgname-$pkgver
        cp $startdir/build-$pkgname.sh $startdir/pkg/usr/src/$pkgname-$pkgver/build-$name.sh
}

create_package() {
        cd $startdir/pkg
        makepkg -l y -c n $startdir/$package.tgz
        cd $startdir
        md5sum $startdir/$package.tgz > $startdir/$package.md5
        requiredbuilder -z $startdir/$package.tgz > $startdir/$package.dep
}

clean() {
        rm -rf $startdir/pkg $startdir/src
}

#########End Redundant Code#####################################
#See what I mean

#########Begin Non Redundant Code##############################

prepare_directory() {
        mkdir $startdir/src
        cp -R libdv-1.0.0.tar.gz $startdir/src
        cd $startdir/src
        for FILES in *; do
                if [[ "$(echo $FILES | grep tar)" ]]; then
                        tar xf $FILES
                fi
        done
        mkdir $startdir/pkg
}

build() {
        cd $startdir/src/$pkgname-$pkgver
        ./configure --prefix=/usr --mandir=/usr/man
        make || return 1
        make DESTDIR=$startdir/pkg install
}

create_slackdesc() {
mkdir $startdir/pkg/install
cat <<"EOF" >$startdir/pkg/install/slack-desc
libdv: libdv - software codec for DV video
libdv: 
libdv: The Quasar  DV codec (libdv) is a software codec for DV video, the
libdv: encoding format used by most digital camcorders, typically those that
libdv: support the IEEE 1394 (a.k.a. FireWire or i.Link) interface. Libdv was
libdv: developed according to the official standards for DV video: IEC 61834
libdv: and SMPTE 314M
libdv: 
libdv: 
libdv: 
libdv: 
EOF
}
####End Non Redundant Code##################

startdir=$(pwd)

pkgname=libdv
pkgver=1.0.0
pkgrel=1
arch=i486
package=$pkgname-$pkgver-$arch-$pkgrel

export CFLAGS="-O2 -march=$arch -mtune=i686"
export CXFLAGS="-O2 -march=$arch -mtune=i686"

#Execution
check_for_root
prepare_directory
set_pre_permissions
build

if [ ! "$?" = "0" ]; then
        echo "The compilation failed"
fi

create_slackdesc
strip_binaries
gzip_man_and_info_pages
set_post_permissions
copy_build_script
create_package
#clean