#
# Function library for buildpkg framework
# It adds support for creating Irix packages in 'inst' format
#
# Define tool programs
# *only* platform specific packaging tools should be listed here
# generic tools go in buildpkg.functions
GENDIST="/usr/sbin/gendist"

GZIP=/usr/people/tgc/bin/gzip
BZIP2=/usr/local/bin/bzip2
STRIP=/bin/true

# This is the hostname command we'll want on Irix
HOSTNAME=/usr/bsd/hostname

# Configuration vars
imageconf=$buildpkgbase/scripts/image.conf
subsysconf=$buildpkgbase/scripts/subsys.conf
idbfile=$metadir/$topdir.idb
specfile=$metadir/$topdir.spec
depends=$metadir/depends
opsfile=$metadir/ops
hidefile=$metadir/hide

# Preformat manpages since Irix is not likely to have nroff available
catman=1

# strip?
dostrip=0

# Other
usedepend=0 # Don't use depend file even if it's available
usescripts=0 # Don't add ops even if they're available
ignore_unpackaged_files=0 # default to check for unpackaged files in the stage area

# Comment these declarations to get it to run with ksh
declare -a pc # Array of product categories (image.subsys)
declare -a pd # Array of matching descriptions
declare -a pctop # Array of toplevel product categories (image)
declare -a pdtop # Array of matching descriptions
declare -a reqs # Array of subsystems with prereqs
declare -a reqp # Array of prereqs (should match up with reqs)
declare -a hide # Files that should be "hidden" with nohist
declare -a opfiles # Files that should have an ops associated
declare -a opscript # Ops to associate with opfiles

#override defaults
pkgprefix=tgc_
pkgname=$pkgprefix$topdir

os=irix`$UNAME -r`
cpu=mips3

configure_args='--prefix=$prefix'

META_CLEAN="$topdir.spec $topdir.idb files.tmp"

# Host specific configuration
[ -r $buildpkgbase/scripts/config.$($HOSTNAME -s).irix ] && . $buildpkgbase/scripts/config.$($HOSTNAME -s).irix

distfile='$topdir-$version-$pkgver.tgc-$os-$cpu-$pkgdirdesig.tardist'

##################################################### 
# Internal helper functions
#####################################################
indent4="   "
indent8="       "
indent12="           "
indent16="               "
indent24="                       "
# fix_ver(): "normalize" a version-pkgver pair
# params: $1=version
# Removes any '.' and '-' characters from a version string
fix_ver()
{
    local ver=`echo $1 | $SED -e 's/\.//g' -e 's/-//g' -e 's/[a-zA-Z]//g'`
    echo $ver
}
# spec_header()
# param: $1=product name $2=description
spec_header()
{
	echo "product $1"
	echo "$indent4 id \"$2\""
}
spec_footer()
{
	echo "endproduct"
}
# spec_img_header()
# param: $1=image name $2=image description $3=version
spec_img_header()
{
	local nver=$(fix_ver $3)
	echo "$indent4 image $1"
	echo "$indent8 id \"$2\""
	echo "$indent8 version $nver"
	echo "$indent8 order 9999"
}
# spec_img_footer()
spec_img_footer()
{
	echo "$indent4 endimage"
}
# spec_subsys_header()
# param: $1=image $2=subsys $3=description
spec_subsys_header()
{
	echo "$indent8 subsys $2 default"
	echo "$indent12 id \"$3\""
	echo "$indent12 replaces self"
	echo "$indent12 exp $pkgname.$1.$2"
}
# spec_subsys_req_header()
# param: none
spec_subsys_req_header()
{
    echo "$indent16 prereq ("
}
# spec_subsys_req()
# param: $1=prereq
spec_subsys_req()
{
    echo "$indent24 $1"
}
# spec_subsys_req_footer()
# param: none
spec_subsys_req_footer()
{
    echo "$indent24"")"
}
# spec_subsys_footer()
# param: none
spec_subsys_footer()
{
    echo "$indent8 endsubsys"
}

# check_ops(): Is there an opscript associated with $1
# param: $1=file to check
check_ops()
{
    local file="$1"
    local return=""
    if [ "$usescripts" -eq 0 ]; then
	echo $return
    fi
    #echo "file is $file" >> /tmp/debug
    for ((i=0; $i < ${#opfiles[@]}; i++))
    do
	#echo "opfiles $i is ${opfiles[$i]}" >> /tmp/debug
	if [ "${opfiles[$i]}" == "$file" ]; then
	    return="${opscript[$i]}"
	fi
    done
    echo $return
}
# fix_fname(): Sanitize filename
# param: $1=filename to fix
# The purpose is to "fix" filenames that gendist won't like
# ie. names with space are a no-no.
fix_fname()
{
    local name="$1"
    local return
    
    # Replace ' ' with '_'
    return=$(echo $name|$SED -e 's/ /_/g')
    echo $return
}
    
# add_files()
# Create IDB entries for all files in a specfic product category
# Takes the following parameters
# $1 = dirname to descend into
# $2 = product_category to assign files
# $3 = permissions to set on the files we find
# $4 = user
# $5 = group
# $6 = special attribute
add_files()
{
	local fspec=$(_upls $1)
	local prodcat=$2
	local defperm=$3
	local owner=$4
	local group=$5
	local specattr=$6

	local FILES=$($FIND $fspec -type f -print|$TEE -a $metadir/files.tmp)
	OIFS=$IFS # We play IFS tricks so we can handle filenames with embedded spaces
	IFS="
	"
	for i in $FILES
	do
		IFS=$OIFS
		if [ "$defperm" == "-" ]; then
			permlist=`$LS -l "$i" | $CUT -d " " -f 1`
			perm=$(compute_octal $permlist)	
		fi
		doop=$(check_ops "$i")
		fname=$(fix_fname "$i")
		if [ ! -z "$specattr" ]; then
		    echo "f $perm $owner $group ${topinstalldir:1}/$fname $i ${pkgname}.${prodcat} $specattr" >>$idbfile
		else
		    if [ ! -z "$doop" ]; then
			echo "f $perm $owner $group ${topinstalldir:1}/$fname $i ${pkgname}.${prodcat} $doop" >>$idbfile
		    else
			echo "f $perm $owner $group ${topinstalldir:1}/$fname $i ${pkgname}.${prodcat}" >>$idbfile
		    fi
		fi

	done
	IFS=$OIFS
	# Handle symlinks
	local FILES=$($FIND $fspec -type l -print|$TEE -a $metadir/files.tmp)
	OIFS=$IFS
	IFS="
	"
	for i in $FILES
	do
		IFS=$OIFS
		if [ "$defperm" == "-" ]; then
			permlist=`$LS -l "$i" | $CUT -d " " -f 1`
			perm=`compute_octal $permlist`	
		fi
		local temp=`$LS -l "$i"|$CUT -d '>' -f 2`
		local symval=${temp# }
		fname=$(fix_fname "$i")
		echo "l $perm $owner $group ${topinstalldir:1}/$fname $i ${pkgname}.${prodcat} symval($symval)" >>$idbfile
	done
	IFS=$OIFS
}

# fetch_imageconf(): Fetch a list of toplevel image entries with descriptions
# params: none
# Discard the ones that we don't have any subsystems for FIXME!
fetch_imageconf()
{
    pctopidx=0
    while read image desc
    do
	pctop[$pctopidx]=$image
	pdtop[$pctopidx]=$desc
	let "pctopidx = $pctopidx + 1"
    done < $imageconf
}

# fetch_subsysdesc(): Fetch a list of subsystem descriptions
# params: none
fetch_subsysdesc()
{
    local i=0
    local numloops=${#pc[@]} 

    while read ss desc
    do
	for ((i=0; i < $numloops; i++)) # Find subsystem...
	do
	    if [ "${pc[$i]}" = "$ss" ]; then
		pd[$i]="$desc"
		break 	# Found it, skip to the next line
	    fi
	done
    done < $subsysconf
}

# fetch_depends(): Fetch a list of subsystems and their prereqs
# params: none
#
fetch_depends()
{
    if [ -r $depends ]; then
	reqidx=0
	while read ss req
	do
	    reqs[$reqidx]=$ss
	    if [ "$req" == "auto" ]; then # auto create depend on sw.base
		nver=$(fix_ver "$version-$pkgver")
		req="$pkgname.sw.base $nver $nver"
	    fi
	    reqp[$reqidx]=$req
	    let "reqidx = $reqidx + 1"
	done < $depends
    fi
}

# fetch_ops(): Fetch ops
# params: none
# Populates the firstop and lastop variables
# and the opfiles and opscript arrays
fetch_ops()
{
    if [ -r $opsfile ]; then
	opsidx=0
	while read optype op
	do
	    case $optype in
		'firstop')
			    firstop="$op"
			    ;;
		'lastop')
			    lastop="$op"
			    ;;
	    esac
	    opfiles[$opsidx]=$optype
	    opscript[$opsidx]=$op	
	    let "opsidx = $opsidx + 1"
	done < $opsfile
    fi
}

##################################
# "external" functions
##################################
# create_idb(): Create the .idb file
# params: none
# Create idb file and insert any firstop/lastops
# Note that parse_def does most of the work.
create_idb()
{
    fetch_ops
    parse_def

    $SORT +4u -6 < $idbfile > $metadir/idbtemp
    lines=$(wc -l < $metadir/idbtemp)
    if [ ! -z $firstop ]; then
	echo "$(head -1 $metadir/idbtemp) $firstop" > $metadir/idbtemp2
	tail +2 $metadir/idbtemp >> $metadir/idbtemp2
    else
	mv $metadir/idbtemp $metadir/idbtemp2
    fi
    if [ ! -z $lastop ]; then
	let "lines=$lines - 1"
	echo "$(head -$lines $metadir/idbtemp2)" > $idbfile
	echo "$(tail -1 $metadir/idbtemp2) $lastop" >> $idbfile
    else
	mv $metadir/idbtemp2 $idbfile
    fi
    $RM -f $metadir/idbtemp $metadir/idbtemp2
}

# create_spec(): Create the .spec file.
# params: none
# Uses name, pkgname & pkgver variables
# Iterate through pctop and for each iteration find
# all entries in pc belonging to that image
#
create_spec()
{
    fetch_imageconf
    fetch_subsysdesc
    fetch_depends
    spec_header $pkgname "$name $version-$pkgver" > $specfile
    local pcsize=${#pc[@]}
    local pctopsize=${#pctop[@]}
    for ((i=0; i < $pctopsize; i++))
    do
	local pcidx=0
	spec_img_header ${pctop[$i]} "${pdtop[$i]}" $version-$pkgver >> $specfile
	while [ "$pcidx" -lt "$pcsize" ]
	do
	    rv=`$EXPR match "${pc[$pcidx]}" ''${pctop[$i]}''`
	    if [ ! "$rv" -eq 0 ]; then # We got a hit!
		spec_subsys_header ${pctop[$i]} `echo ${pc[$pcidx]}|$CUT -d . -f 2` "${pd[$pcidx]}" >> $specfile
		reqsize=${#reqs[@]}
		declare -a reqidlist
		reqidlidx=0
		for ((j=0; j < $reqsize; j++))
		do
		    if [ "${reqs[$j]}" == "${pc[$pcidx]}" ]; then 
			reqidlist[$reqidlidx]=$j
			let "reqidlidx=$reqidlidx + 1"
		    fi
		done
		reqidlsize=${#reqidlist[@]}
		if [ "$reqidlsize" -eq 1 ]; then
		    id=${reqidlist[1]}
		    spec_subsys_req_header >> $specfile
		    spec_subsys_req "${reqp[$id]}" >> $specfile
		    spec_subsys_req_footer >> $specfile
		fi
		if [ "$reqidlsize" -gt 1 ]; then
		    spec_subsys_req_header >> $specfile
		    for ((j=1; j < $reqidlsize; j++))
		    do
			id=${reqidlist[$j]}
			spec_subsys_req "${reqp[$id]}" >> $specfile
		    done
		    spec_subsys_req_footer >> $specfile
		fi
		spec_subsys_footer >> $specfile
	    fi
	    let "pcidx = $pcidx + 1"
	done
	spec_img_footer >> $specfile
    done
    spec_footer >> $specfile
}

# make_dist(): Create inst image
# params: none
# Run gendist to create the instimage
make_dist()
{
    if [ "$1" == "shortroot" ]; then
	error $E_ARG_OBSO make_dist
    fi

    if [ "$shortroot" -eq 1 ]; then
	sbase=$stagedir
    else
	sbase=$stagedir/$topinstalldir
    fi
    local disttmp=/tmp/disttmp$$
    $MKDIR $disttmp

    local dfile=$(_upls $distfile)

    $GENDIST -rbase $topinstalldir -sbase $sbase -idb $idbfile -spec $specfile -dist $disttmp
    setdir $disttmp
    $VTAR -cf $distdir/$dfile $pkgname*

    setdir stage
    $RM -rf $disttmp
    echo "Done. Package was created as $dfile"
}

# parse_pkgdef(): Read in $metadir/pkgdef
# params: none
# This will parse the package descriptions in
# pkgdef that tells us how many packages there
# should be and what they include.
parse_def()
{
    local section=0
    local foundfiles=0
    local secname=""
    local secpos=0
    local legalend=0
    local index=0
    local found=0

    while read line
    do
        case ${line:0:1} in
            '#') ;;
            '[')
                if [ $section -eq 1 ]; then
                    error $E_BAD_SECTION_BEGIN parse_def
                else
                    section=1
                    secname="${line:1:((${#line}-2))}"
                    legalend=0
                fi
                ;;
            '')
                if [ $section -eq 0 ]; then
                    error $E_BAD_SECTION_END parse_def
                else
                    section=0 # Finished this section
                    foundfiles=0 #
                    legalend=1 # We encountered a syntacticly correct section end
                fi
                ;;
            *)
                equalindex=$(expr index "$line" =)
                if [ ! $equalindex -eq 0 ]; then
                    case "${line:0:(($equalindex-1))}" in
                        'pkgname')
                                    pkgname="$(_upls ${line:$equalindex:${#line}})"
                                    ;;
                        'name')
                                    name="$(_upls ${line:$equalindex:${#line}})"
                                    ;;
                        'pkgver')   
                                    pkgver="$(_upls ${line:$equalindex:${#line}})"
                                    ;;
			'subsys')   subsys="$(_upls ${line:$equalindex:${#line}})"
				    found=0
				    for i in ${pc[@]} # If $subsys is already there then don't add it again
				    do
					if [ "$i" = "$subsys" ]; then
					    found=1
					    break       # It's already there so skip out
					fi
				    done
				    if [ $found -eq 0 ]; then
					pc[$index]=$subsys
					let "index = $index + 1"
				    fi
				    ;;
                    esac
                else # Perhaps we hit 'files'?
                    if [ "${line:0:5}" == "files" ]; then
                        triplet="${line:6:((${#line}-5-2))}"
                        defaultperms=$(echo $triplet | $AWK -F, '{ print $1 }')
                        defaultuid=$(echo $triplet | $AWK -F, '{ print $2 }')
                        defaultgid=$(echo $triplet | $AWK -F, '{ print $3 }')
                        foundfiles=1
                    else
                        if [ $foundfiles -eq 1 ]; then # We already found the 'files' line so this must be the filelist
                            if [ "${line:0:5}" == "hide " ]; then
				specattr="nohist"
				line=${line:5}
			    fi
			    if [ "${line:0:4}" == "dir " ]; then
				echo "Hit unsupported 'dir' directive"
				#add_dir $defaultperms $defaultuid $defaultgid "${line:4}" $secname # Add dir entry
			    else
				add_files "$line" $subsys $defaultperms $defaultuid $defaultgid "$specattr" # Build idb file from filespec
                            fi
			    specattr="" # Reset special attribute
                        fi
                    fi
                fi
                ;;
        esac
    done < $metadir/pkgdef
    # If there is no blank line at the end of a pkgdef section (if there is only one section that is very
    # likely) then we end up here without having executed the 'section end' actions (case '' above)
    if [ $legalend -eq 0 ]; then
        if [ $section -eq 0 ]; then
            error $E_BAD_SECTION_END parse_def
        else
            section=0 # Finished this section
            foundfiles=0 #
        fi
    fi
}

# check_unpackaged(): Check if there are unpackaged files in the stage area
# params: none
check_unpackaged()
{
    local upf
    local i
    $FIND . -type f -print|$SED -e 's/\.\///g' > $tmpdir/files.tmp
    $FIND . -type l -print|$SED -e 's/\.\///g' >> $tmpdir/files.tmp
#    $FIND . -type d -print|$SED -e 's/\.\///g'|$GREP -v '^\.' >> $tmpdir/files.tmp
    $SORT $metadir/files.tmp|$UNIQ > $tmpdir/f1
    $SORT $tmpdir/files.tmp > $tmpdir/f2
    if [ ! "$($CMP $tmpdir/f1 $tmpdir/f2)" == "" ]; then
        upf="$($CAT $tmpdir/f1 $tmpdir/f2 | $SORT | $UNIQ -u)"
	if [ ! -z "$upf" ]; then
	    echo "There are unpackaged files in the stagedir:"
	    for i in $upf
	    do
		echo "${indent4}${i}"
	    done
	fi
        $RM -f $tmpdir/f1 $tmpdir/f2
	if [ "$ignore_unpackaged_files" -eq 0 ]; then
	    error $E_UNPACKAGED_FILES check_unpackaged
	fi
    fi
    $RM -f $tmpdir/f1 $tmpdir/f2
}

# generic_pack(): Build package using files from 'install' stage
# params: $1 - indicating whether or not the root is complete as described below
# We expect generic_install to have made $stagedir the "root" dir
# in that all paths below will be complete (ie. /usr/local/bin and not
# just bin) *unless* shortroot=1.
generic_pack()
{   
    if [ "$1" == "shortroot" ]; then
	error $E_ARG_OBSO generic_pack
    fi
    clean meta

    if [ "$shortroot" -eq 1 ]; then
	if [ $catman -eq 1 -a -d $stagedir/man ]; then
	    setdir $stagedir/man
	    fix_man
	fi
	setdir stage
    else
	if [ $catman -eq 1 -a -d $stagedir$topinstalldir/man ]; then
	    setdir $stagedir$topinstalldir/man
	    fix_man
	fi
	setdir $stagedir$topinstalldir
    fi
    create_idb
    create_spec
    check_unpackaged
    make_dist
}