#!/bin/bash
#Automatically Created by slkbuild 0.6.1
#Maintainer: R S Ananda Murthy <rsamurti@gmail.com>
#url: http://www.cise.ufl.edu/research/sparse/SuiteSparse/

######Begin Redundant Code######################################
check_for_root() {
	if [ "$UID" != "0" ]; then
		echo "You need to be root"
		exit 1
	fi
}

clean_dirs () {
        for COMPLETED in src pkg; do
                if [ -e $COMPLETED ]; then
                        rm -rf $COMPLETED
                fi
        done
}

clean_old_builds () {
	rm -rf $package.{t[xlgb]z,md5}
	clean_dirs
}

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 {} \;
}


gzip_man_and_info_pages() {
	for DOCS in man info; do
		if [ -d "$startdir/pkg/usr/share/$DOCS" ]; then
			mv $startdir/pkg/usr/share/$DOCS $startdir/pkg/usr/$DOCS
			if [[ ! "$(ls $startdir/pkg/usr/share)" ]]; then
				rm -rf $startdir/pkg/usr/share
			fi
		fi
		if [ -d "$startdir/pkg/usr/$DOCS" ]; then
			# I've never seen symlinks in info pages....
			if [ "$DOCS" == "man" ]; then
				(cd $startdir/pkg/usr/$DOCS
				for manpagedir in $(find . -type d -name "man*" 2> /dev/null) ; do
					( cd $manpagedir
					for eachpage in $( find . -type l -maxdepth 1 2> /dev/null) ; do
						ln -s $( readlink $eachpage ).gz $eachpage.gz
						rm $eachpage
					done )
				done)
			fi
			find $startdir/pkg/usr/$DOCS -type f -exec gzip -9 '{}' \;
		fi
	done
	[ -a $startdir/pkg/usr/info/dir.gz ] && rm -f $startdir/pkg/usr/info/dir.gz
}

set_post_permissions() {
	for DIRS in usr/share/icons usr/doc; do
		if [ -d "$startdir/pkg/$DIRS" ]; then
			if [ "$DIRS" == "usr/doc" ]; then
				find $startdir/pkg/$DIRS -type f -exec chmod 644 {} \;
				find $startdir/pkg/$DIRS -type d -exec chmod 755 {} \;
			fi
		fi
		[ -d $startdir/pkg/$DIRS ] && chown root:root -R $startdir/pkg/$DIRS
	done
	[ -d $startdir/pkg/usr/bin ] && find $startdir/pkg/usr/bin -user root -group bin -exec chown root:root {} \;
}

copy_build_script() {
	mkdir -p $startdir/pkg/usr/src/$pkgname-$pkgver/
	cp $startdir/build-$pkgname.sh $startdir/pkg/usr/src/$pkgname-$pkgver/build-$pkgname.sh
	[ -f $startdir/SLKBUILD ] && cp $startdir/SLKBUILD	$startdir/pkg/usr/src/$pkgname-$pkgver/SLKBUILD
}

create_package() {
	ls -lR $startdir/pkg
	cd $startdir/pkg
	/sbin/makepkg -l y -c n $startdir/$package.txz
	cd $startdir
	md5sum $package.txz > $startdir/$package.md5
}

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
}
#########End Redundant Code#####################################
#########Begin Non Redundant Code##############################

prepare_directory() {
	mkdir $startdir/src
	mkdir -p $startdir/pkg/usr/src/$pkgname-$pkgver
	for SOURCES in ${source[@]}; do
		protocol=$(echo $SOURCES | sed 's|:.*||')
	        file=$(basename $SOURCES | awk -F= '{print $NF}')
		if [ ! -f "$file" ]; then
			if [ "$protocol" = "http" -o "$protocol" = "https" -o "$protocol" = "ftp" ]; then
				echo -e "\nDownloading $(basename $SOURCES)\n"
        	                wget $SOURCES -O $file
				if [ ! "$?" == "0" ]; then
					echo "Download failed"
					exit 2
				fi 
			else
				echo "$SOURCES does not appear to be a url nor is it in the directory"
				exit 2
			fi
		fi
		cp -R $file $startdir/src
		if ! [ "$protocol" = "http" -o "$protocol" = "https" -o "$protocol" = "ftp" ]; then
			if ! [[  -eq 1 ]]; then
				cp -R $startdir/$(basename $SOURCES) $startdir/pkg/usr/src/$pkgname-$pkgver/
			fi
		fi
	done
}

extract_source() {
	cd $startdir/src
	if [[ "$(ls $startdir/src)" ]]; then	
		for FILES in ${source[@]}; do
	        	FILES="$(basename $FILES | awk -F= '{print $NF}')"
			file_type=$(file -biz "$FILES")
			unset cmd
			case "$file_type" in
				*application/x-tar*)
					cmd="tar -xf" ;;
				*application/x-zip*)
					cmd="unzip" ;;
				*application/zip*)
					cmd="unzip" ;;
				*application/x-gzip*)
					cmd="gunzip -d -f" ;;
				*application/x-bzip*)
					cmd="bunzip2 -f" ;;
				*application/x-xz*)
					cmd="xz -d -f" ;;
				*application/x-lzma*)
					cmd="lzma -d -f" ;;
			esac
			if [ "$cmd" != "" ]; then
				echo "$cmd $FILES"
	        	        $cmd $FILES
			fi
		done
	elif [ ! "$source" ]; then
		echo -n "" # lame fix
	else
		echo "no files in the src directory $startdir/src"
		exit 2
	fi
}

build() {
	cd $startdir/src/SuiteSparse
	patch -Np1 -i $startdir/src/include_path_metis.patch || return 1
	cp ../UFconfig32.mk UFconfig/UFconfig.mk
    make || return 1
    mkdir shared
    
    ld -shared -soname libamd.so.2 -o shared/libamd.so.2.2.0 --whole-archive AMD/Lib/libamd.a && ln -sf libamd.so.2.2.0 shared/libamd.so
    ld -shared -soname libcamd.so.2 -o shared/libcamd.so.2.2.0 --whole-archive CAMD/Lib/libcamd.a && ln -sf libcamd.so.2.2.0 shared/libcamd.so
    ld -shared -soname libcolamd.so.2 -o shared/libcolamd.so.2.7.1 --whole-archive COLAMD/Lib/libcolamd.a && ln -sf libcolamd.so.2.7.1 shared/libcolamd.so
    ld -shared -soname libccolamd.so.2 -o shared/libccolamd.so.2.7.1 --whole-archive CCOLAMD/Lib/libccolamd.a && ln -sf libccolamd.so.2.7.1 shared/libccolamd.so
    ld -shared -soname libbtf.so.1 -o shared/libbtf.so.1.1.0 --whole-archive BTF/Lib/libbtf.a && ln -sf libbtf.so.1.1.0 shared/libbtf.so
    ld -shared -soname libldl.so.2 -o shared/libldl.so.2.0.1 --whole-archive LDL/Lib/libldl.a && ln -sf libldl.so.2.0.1 shared/libldl.so
    ld -shared -soname libcholmod.so.1 -o shared/libcholmod.so.1.7.1 --whole-archive CHOLMOD/Lib/libcholmod.a -lblas -llapack -lmetis -L./shared -lamd -lcamd -lcolamd -lccolamd && ln -sf libcholmod.so.1.7.1 shared/libcholmod.so
    ld -shared -soname libspqr.so.1 -o shared/libspqr.so.1.1.2 --whole-archive SPQR/Lib/libspqr.a -lblas -llapack -ltbb -L./shared -lcholmod && ln -sf libspqr.so.1.1.2 shared/libspqr.so
    ld -shared -soname libcxsparse.so.2 -o shared/libcxsparse.so.2.2.3 --whole-archive CXSparse/Lib/libcxsparse.a && ln -sf libcxsparse.so.2.2.3 shared/libcxsparse.so
    ld -shared -soname libklu.so.1 -o shared/libklu.so.1.1.0 --whole-archive KLU/Lib/libklu.a -L./shared -lamd -lcolamd -lbtf && ln -sf libklu.so.1.1.0 shared/libklu.so
    ld -shared -soname libumfpack.so.5 -o shared/libumfpack.so.5.4.0 --whole-archive UMFPACK/Lib/libumfpack.a -lblas -llapack -L./shared -lamd && ln -sf libumfpack.so.5.4.0 shared/libumfpack.so

	mkdir -p $startdir/pkg/usr/lib${LIBDIRSUFFIX}

    cp -d shared/*.so* $startdir/pkg/usr/lib${LIBDIRSUFFIX}/ || return 1
    ldconfig -n $startdir/pkg/usr/lib${LIBDIRSUFFIX}
    cp CAMD/Lib/libcamd.a $startdir/pkg/usr/lib${LIBDIRSUFFIX}/ || return 1
    cp COLAMD/Lib/libcolamd.a $startdir/pkg/usr/lib${LIBDIRSUFFIX}/ || return 1
    cp CCOLAMD/Lib/libccolamd.a $startdir/pkg/usr/lib${LIBDIRSUFFIX}/ || return 1
    cp AMD/Lib/libamd.a $startdir/pkg/usr/lib${LIBDIRSUFFIX}/ || return 1
    cp LDL/Lib/libldl.a $startdir/pkg/usr/lib${LIBDIRSUFFIX}/ || return 1
    cp CHOLMOD/Lib/libcholmod.a $startdir/pkg/usr/lib${LIBDIRSUFFIX}/ || return 1
    cp SPQR/Lib/libspqr.a $startdir/pkg/usr/lib${LIBDIRSUFFIX}/ || return 1
    cp CXSparse/Lib/libcxsparse.a $startdir/pkg/usr/lib${LIBDIRSUFFIX}/ || return 1
    cp KLU/Lib/libklu.a $startdir/pkg/usr/lib${LIBDIRSUFFIX}/ || return 1
    cp BTF/Lib/libbtf.a $startdir/pkg/usr/lib${LIBDIRSUFFIX}/ || return 1
    cp UMFPACK/Lib/libumfpack.a $startdir/pkg/usr/lib${LIBDIRSUFFIX}/ || return 1

    mkdir $startdir/pkg/usr/include

    cp CAMD/Include/*.h $startdir/pkg/usr/include/ || return 1
    cp COLAMD/Include/*.h $startdir/pkg/usr/include/ || return 1
    cp LDL/Include/*.h $startdir/pkg/usr/include/ || return 1
    cp CHOLMOD/Include/*.h $startdir/pkg/usr/include/ || return 1
    cp SPQR/Include/*.h $startdir/pkg/usr/include/ || return 1
    cp CXSparse/Include/*.h $startdir/pkg/usr/include/ || return 1
    cp KLU/Include/*.h $startdir/pkg/usr/include/ || return 1
    cp BTF/Include/*.h $startdir/pkg/usr/include/ || return 1
    cp UMFPACK/Include/*.h $startdir/pkg/usr/include/ || return 1
    cp UFconfig/*.h $startdir/pkg/usr/include/ || return 1
    cp CCOLAMD/Include/*.h $startdir/pkg/usr/include/ || return 1
    cp AMD/Include/*.h $startdir/pkg/usr/include/ || return 1

    mkdir -p $startdir/pkg/usr/doc/$pkgname-$pkgver

    cp AMD/Doc/AMD_UserGuide.pdf CAMD/Doc/CAMD_UserGuide.pdf KLU/Doc/KLU_UserGuide.pdf KLU/Doc/palamadai_e.pdf LDL/Doc/ldl_userguide.pdf SPQR/Doc/spqr_user_guide.pdf $startdir/pkg/usr/share/doc/$pkgname
    cp CHOLMOD/Doc/UserGuide.pdf $startdir/pkg/usr/doc/$pkgname-$pkgver/CHOLMOD_UserGuide.pdf
    cp UMFPACK/Doc/UserGuide.pdf $startdir/pkg/usr/doc/$pkgname-$pkgver/UMFPACK_UserGuide.pdf
    cp UMFPACK/Doc/QuickStart.pdf $startdir/pkg/usr/doc/$pkgname-$pkgver/UMFPACK_QuickStart.pdf
} 

create_slackdesc() {
mkdir $startdir/pkg/install
cat <<"EODESC" >$startdir/pkg/install/slack-desc
suitesparse: SuiteSparse (A suite of sparse matrix packages)
suitesparse: 
suitesparse: Provides the following libraries for computations involving sparse
suitesparse: matrices -- AMD, CAMD, COLAMD, BTF, KLU, CHOLMOD, CXSparse, UMFPACK,
suitesparse: CCOLAMD, CHOLMOD has been compiled to use Metis.
suitesparse: Requires: LAPACK package which also contains BLAS, and Metis
suitesparse: 
suitesparse: 
suitesparse: 
suitesparse: 
suitesparse: 
EODESC
}

copy_docs() {
	for stuff in ${docs[@]}; do
		if [ ! -d "$startdir/pkg/usr/doc/$pkgname-$pkgver" ]; then
			mkdir -p $startdir/pkg/usr/doc/$pkgname-$pkgver
		fi
		find $startdir/src -type f -iname "$stuff" -exec cp -R '{}' $startdir/pkg/usr/doc/$pkgname-$pkgver \;
	done
}
create_source_file(){
	[ -f $package.src ] && rm $package.src
	if [ ! -z $sourcetemplate ]; then
		echo $sourcetemplate/SLKBUILD >> $package.src
		echo $sourcetemplate/build-$pkgname.sh >> $package.src
		for SOURCES in ${source[@]}; do
			protocol=$(echo $SOURCES | sed 's|:.*||')
			if ! [ "$protocol" = "http" -o "$protocol" = "https" -o "$protocol" = "ftp" ]; then
				if [ ! -z $sourcetemplate ]; then
					echo $sourcetemplate/$(basename $SOURCES) >> $package.src
				else
					echo $(basename $SOURCES) >> $package.src
				fi
			else
				echo $SOURCES >> $package.src
			fi
		done
	fi
}
post_checks(){
	# Ideas taken from src2pkg :)
	if [ -d "$startdir/pkg/usr/doc/$pkgname-$pkgver" ]; then
		for DIRS in usr/doc/$pkgname-$pkgver usr/doc; do
			cd $startdir/pkg/$DIRS
			if [[ $(find . -type f) = "" ]] ; then
				cd ..
				rmdir $DIRS
			fi
		done
	fi
	# if the docs weren't deleted ...
	if [ -d "$startdir/pkg/usr/doc/$pkgname-$pkgver" ]; then
		cd $startdir/pkg/usr/doc/$pkgname-$pkgver
		#remove zero lenght files
		if [[ $(find . -type f -size 0) ]]; then
			echo "Removing some zero lenght files"
			find . -type f -size 0 -exec rm -f {} \;
		fi
	fi
	# check if we need to add code to handle info pages
	if [[ -d $startdir/pkg/usr/info ]] && [[ ! $(grep install-info $startdir/pkg/install/doinst.sh &> /dev/null) ]] ; then
		echo "Found info files - Adding install-info command to doinst.sh"
		INFO_LIST=$(ls -1 $startdir/pkg/usr/info)
		echo "" >> $startdir/pkg/install/doinst.sh
		echo "if [ -x usr/bin/install-info ] ; then" >> $startdir/pkg/install/doinst.sh
		for page in $(echo $INFO_LIST) ; do
			echo " usr/bin/install-info --info-dir=usr/info usr/info/$page 2>/dev/null" >> $startdir/pkg/install/doinst.sh
		done
		echo "fi" >> $startdir/pkg/install/doinst.sh
	fi
	[[ -e $startdir/pkg/usr/info/dir ]] && rm -f $startdir/pkg/usr/info/dir

	if [ -d $startdir/pkg/etc ]; then
		cd $startdir/pkg/
		for conf in $(find ./etc -type f) ; do
			conf=${conf: 2}
			dotnew=( "${dotnew[@]}" "$conf" )
		done
	fi
	if [[ "$dotnew" ]]; then
        for files in ${dotnew[@]} ; do
                fullfile="${startdir}/pkg/${files}"
                if [ -e "$fullfile" ]; then
                        mv $fullfile ${fullfile}.new
                else
                        echo "$fullfile was not found"
                        exit 2
                fi
        done
        cat<<"EODOTNEW" >>$startdir/pkg/install/doinst.sh
#Added by slkbuild 0.6.1
dotnew() {
        NEW="${1}.new"
        OLD="$1"
        if [ ! -e $OLD ]; then
                mv $NEW $OLD
        elif [ "$(cat $OLD | md5sum)" = "$(cat $NEW | md5sum)" ]; then
                rm $NEW
        fi
}
EODOTNEW
for i in ${dotnew[@]}; do
echo "dotnew $i" >> $startdir/pkg/install/doinst.sh
done
fi
}

####End Non Redundant Code############################

#Variables

startdir=$(pwd)
SRC=$startdir/src
PKG=$startdir/pkg

pkgname=suitesparse
pkgver=3.4.0
pkgrel=1am
arch=x86_64
package=$pkgname-$pkgver-$arch-1am
source=("http://www.cise.ufl.edu/research/sparse/SuiteSparse/SuiteSparse-3.4.0.tar.gz" "UFconfig32.mk" "include_path_metis.patch")
sourcetemplate=http://people.salixos.org/rsamurti/suitesparse
docs=(readme install copying changelog authors news todo)
export CFLAGS="-O2 -fPIC"
export CXXFLAGS="-O2 -fPIC"
export LIBDIRSUFFIX="64"

#Execution

check_for_root
clean_old_builds
prepare_directory
extract_source
set_pre_permissions
build
if [ ! "$?" = "0" ]; then
	echo "build() failed."
	exit 2
fi
create_slackdesc
post_checks
copy_docs
strip_binaries
gzip_man_and_info_pages
set_post_permissions
copy_build_script
create_package
create_source_file
echo "Package has been built."
echo "Cleaning pkg and src directories"
clean_dirs