# Copyright 1999-2005 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

inherit eutils

DESCRIPTION="The webdot cgi-bin to generate dynamic image maps for graphviz input"
HOMEPAGE="http://www.graphviz.org"
SRC_URI="http://www.graphviz.org/pub/graphviz/ARCHIVE/${P}.tar.gz"

LICENSE="CPL-1.0"
KEYWORDS="~x86"
SLOT="0"

IUSE=""
DEPEND="media-gfx/graphviz
	net-www/apache
	dev-lang/tcl
	app-text/ghostscript
	media-fonts/corefonts"

# Assumes: apache
# Assumes: cgi-bin location: /var/www/localhost/cgi-bin
# Assumes: html	   location: /var/www/localhost/htdocs  (dohtml doesn't do this!)
# Assumes: graphviz package installs libtcldot.so in /usr/lib/graphviz/
# Assumes: webdot build cache location will be: /var/cache  (see CACHEROOT)

CACHEROOT="/var/cache"

src_compile() {
	cd ${S}
	
	mkdir .build
	cat <<EOF > .build/webdot.start
#!`which tclsh`
source /etc/conf.d/webdot.cfg
EOF
	cat .build/webdot.start cgi-bin/webdot > .build/webdot && rm .build/webdot.start

	TTFDIRS=`find /usr/share/fonts -name '*.ttf' | xargs -n1 dirname | sort -u | xargs echo | sed -e's/ /:/g'`

	cat <<EOF > .build/webdot.cfg
set LIBTCLDOT /usr/lib/graphviz/libtcldot.so
set CACHE_ROOT ${CACHEROOT}/webdot
set GS `which gs`
set PS2EPSI `which ps2epsi`
set LOCALHOSTONLY 0
set env(GDFONTPATH) "${TTFDIRS}:$env(GDFONTPATH)"
EOF

}

src_install() {
	cd ${S}
	
	dodoc README

	cd ${S}/html/webdot
	insinto /var/www/localhost/htdocs/webdot
	doins *

	cd ${S}/cgi-bin
	exeinto /var/www/localhost/cgi-bin
	doexe webdot.tclet

	cd ${S}/.build
	doexe webdot
	doconfd webdot.cfg

	keepdir ${CACHEROOT}/webdot
	fowners apache:apache ${CACHEROOT}/webdot
	fperms 0700 ${CACHEROOT}/webdot
}

pkg_postinst() {

	
	# same as above; can't make global or portage will complain...
	TTFDIRS=`find /usr/share/fonts -name '*.ttf' | xargs -n1 dirname | sort -u | xargs echo | sed -e's/ /:/g'`

	# sigh... a hackish fix for internal demand for Times font from libtcldot.so
	(cd /usr/share/fonts/corefonts && ( [ -r Times.ttf ] || ln -s times.ttf Times.ttf ))

	einfo "Note: webdot will serve requests from any host."
	einfo "This could allow remote users to significantly consume"
	einfo "local CPU and disk resources.  To change, modify the"
	einfo "LOCALHOSTONLY setting in /etc/conf.d/webdot.cfg"
	einfo ""
	einfo "The /etc/conf.d/webdot.cfg specifies font settings for"
	einfo "the currently installed set of truetype fonts (.ttf):"
	einfo ""
	einfo "	 ${TTFDIRS}"
	einfo ""
	einfo "If more .ttf fonts are installed, update the GDFONTPATH"
	einfo "setting in /etc/conf.d/webdot.cfg"
	einfo ""
	einfo "To try it out:"
	einfo "	 $ mkdir ~/public_html/mywebdot"
	einfo "	 $ echo 'graph G { a -- b -- c -- d; b -- e -- d -- f }' > ~/public_html/mywebdot/test.dot"
	einfo "	 Browse to:	 http://localhost/cgi-bin/webdot/~USER/mywebdot/test.dot.neato.png"
	einfo ""
	einfo "See http://localhost/webdot/index.html for more information"
}