# Copyright 1999-2002 Gentoo Technologies, Inc.
# Distributed under the terms of the GNU General Public License v2
# $Header: $

ECLASS=font
EXPORT_FUNCTIONS pkg_postinst pkg_postrm
INHERITED="$INHERITED $ECLASS"
DESCRIPTION="Based on the ${ECLASS} eclass"

if [ "`use truetype`" ] ; then
	DEPEND="x11-misc/ttmkfdir ${DEPEND}"
fi

if [ "`use X`" ] ; then
	DEPEND="virtual/x11 ${DEPEND}"
fi

FONTDIR="/usr/X11R6/lib/X11/fonts/local"

font_pkg_postinst() {
	setup_font_dirs ${FONTDIR}
}

font_pkg_postrm() {
	setup_font_dirs ${FONTDIR}
}

# Return 0 on change, or 1 on no change, or if dir do not exist
check_changed() {
	local x=""
	local fontlist=""
	
	# If the dir do not exist, e
	if [ ! -d $1 ]
	then
		return 1
	fi

	# Create a list of all non known config files in the font dir
	fontlist="$(find $1/ -type f -maxdepth 1 | \
	            gawk '$0 !~ /fonts\..*$|^.*\.dir$|XftCache/ {print}')"
	
	if [ ! -f $1/fonts.list ]
	then
		if [ -n "${fontlist}" ]
		then
			# No list file exist, so create it and return 0 to add
			# this font dir as a candidate for updating...
			echo "${fontlist}" > $1/fonts.list

			return 0
		fi
	else
		local retval=1

		# All the fonts was removed, so cleanup
		if [ -z "${fontlist}" ]
		then
			for x in $1/fonts.* $1/encodings.dir $1/XftCache
			do
				if [ -f ${x} ]
				then
					rm -f ${x}
				fi
			done

			return 1
		fi
		
		# Check that no files was added or removed....
		if [ "$(cat $1/fonts.list | md5sum)" != "$(echo "${fontlist}" | md5sum)" ]
		then
			retval=0
		fi

		# Check that no files was updated....
		if [ "${retval}" -ne 0 ]
		then
			local changed_list=""

# It should be more consistant if we consider a change to fonts.scale, or
# encodings.dir files as a need for an update as well ...
#			changed_list="$(find $1/ -type f -cnewer $1/fonts.dir | \
#			                gawk '$0 !~ /fonts\..*$|^.*\.dir$|XftCache/ {print}')"
			changed_list="$(find $1/ -type f -cnewer $1/fonts.dir | \
			                gawk '$0 !~ /fonts\.(list|cache-1)$|XftCache/ {print}')"

			if [ -n "${changed_list}" ]
			then
				retval=0
			fi
		fi

		# OK, something changed, so recreate fonts.list and add as candidate
		# for updating...
		if [ "${retval}" -eq 0 ]
		then
			echo "${fontlist}" > $1/fonts.list

			return 0
		fi
	fi

	return 1
}

# This is a function to extract font dirs from
# the xfs config file (/etc/X11/fs/config).
get_fontdir_list() {
	[ ! -r /etc/X11/fs/config ] && return 0
	
	gawk '
		BEGIN {

			while((getline xfsconf_data < ("/etc/X11/fs/config")) > 0) {

				# Strip any comments
				if (xfsconf_data !~ /^[[:space:]]*#/) {

					# Dont bother if its a blank line
					if (xfsconf_data == "") continue

					# If we have a line that contain 'catalogue=', we
					# should be where the list of font dirs are
					if (xfsconf_data ~ /catalogue[[:space:]]*=/)
						DO_WRITE = 1

					# Ok, we got our que, so start
					if (DO_WRITE) {

						# Strip any leading spaces and tabs
						sub(/^[[:space:]]*/, "", xfsconf_data)
						# Strip the 'catalogue=' part
						sub(/catalogue[[:space:]]*=[[:space:]]*/, "", xfsconf_data)

						# The last font dir will not have a ',', so this will
						# be the last line we read ...
						if (xfsconf_data !~ /,$/) {
						
							DO_WRITE = 0
							DONE = 1
						}
							
						# Strip the ending ',' ...
						sub(/,$/, "", xfsconf_data)

						# If we have a valid font path, print it
						if (xfsconf_data != "") {

							have_dup = 0

							# Check for duplicates ...
							for (x in DIRLIST)
								if (DIRLIST[x] == xfsconf_data) {

									have_dup = 1
									break
								}
						
							if (!have_dup) {
								print xfsconf_data
								DIRLIST[++i] = xfsconf_data
							}
						}
					}
					
					# No need to continue reading the file ...
					if (DONE) break
				}
			}

			close("/etc/X11/fs/config")
		}'

	return 0
}

# This is the main beast for setting up the font dirs
setup_font_dirs() {
	local x=""
	local pending_fontdirs=""
	local changed="no"

	umask 022

	if [ ! -x /usr/X11R6/bin/mkfontdir -o ! -x /usr/X11R6/bin/ttmkfdir ]
	then
		ewarn "Could not find the mkfontdir or ttmkfdir binaries!"
		return 0
	fi

	if [ ! -d /usr/X11R6/lib/X11/fonts/encodings ]
	then
		ewarn "Encodings directory are missing!"
		ewarn "Please restore /usr/X11R6/lib/X11/fonts/encodings ..."
		return 0
	fi

	# Generate the encodings.dir ...
	/usr/X11R6/bin/mkfontdir -n \
		-e /usr/X11R6/lib/X11/fonts/encodings \
		-e /usr/X11R6/lib/X11/fonts/encodings/large \
		-- /usr/X11R6/lib/X11/fonts/encodings
	
	ebegin "Scanning font directories"
	for x in "$@"
	do
		if test -d ${x} && check_changed ${x}
		then
			if [ -z "${pending_fontdirs}" ]
			then
				pending_fontdirs="${x}"
			else
				pending_fontdirs="${pending_fontdirs} ${x}"
			fi
		fi
	done
	eend 0

	if [ -n "${pending_fontdirs}" ]
	then
		ebegin "Indexing font directories"
		for x in ${pending_fontdirs}
		do
			ebegin "  ${x}"

			# Only generate .scale files if there are truetype fonts present ...
			if [ "${x/encodings}" = "${x}" -a \
			     -n "$(find ${x} -iname '*.[otps][pft][cfad]' -print)" ]
			then
				/usr/X11R6/bin/ttmkfdir -x 2 \
					-e /usr/X11R6/lib/X11/fonts/encodings/encodings.dir \
					-o ${x}/fonts.scale -d ${x} > /dev/null
			fi
          
		  	# Now generate fonts.dir files ...
			if [ "${x/encodings}" = "${x}" ]
			then
				/usr/X11R6/bin/mkfontdir \
					-e /usr/X11R6/lib/X11/fonts/encodings \
					-e /usr/X11R6/lib/X11/fonts/encodings/large \
					-- ${x} > /dev/null
			fi

			if [ "${x/encodings}" = "${x}" -a -x /usr/X11R6/bin/xftcache ] && \
			   [ -n "$(find ${x} -iname '*.[otps][pft][cfad]' -print)" ]
			then
				# xftcache is broken, but run it anyhow ...
				/usr/X11R6/bin/xftcache ${x} &> /dev/null
			fi
			eend 0

			changed="yes"
		done
	fi

	# While we at it, update fontconfig's cache as well
	if [ -x /usr/bin/fc-cache -a "${changed}" = "yes" ]
	then
		ebegin "Updating FC cache"
		HOME="/root" /usr/bin/fc-cache -f
		eend 0
	fi
}

# vim:ts=4