# $Id: pkgIndex.tcl.in,v 1.9 2005/04/27 06:43:20 rlaboiss Exp $

# Load PLplot tcl extension

# Copyright (C) 2004  Alan W. Irwin
# Copyright (C) 2004  Joao Cardoso
#
# This file is part of PLplot.
#
# PLplot is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Library Public License as published
# by the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# PLplot is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Library General Public License for more details.
#
# You should have received a copy of the GNU Library General Public License
# along with PLplot; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

# This proc takes care of finding & loading the proper driver.

# The original version dealt with the possibility that either or both $dir and
# $file may contain spaces, or characters like []{}, but this hasn't been
# tested for this version.

proc load_pkg_Pltcl {dir} {
    global pllibrary tcl_platform auto_path
    #puts "loading Pltcl, dir: $dir"
    set pllibrary $dir

    if {$tcl_platform(platform) == "unix"} {
	set thisDir [pwd]
	set buildDir /usr/obj/ports/plplot-5.6.1/plplot-5.6.1
	set bLen [string length $buildDir]
	if {![string compare -length $bLen $buildDir $thisDir]}	then {
		set searchdirs ".libs"} else {
		set searchdirs "/usr/local/lib"}
	#puts $searchdirs
	# prefer double precision version
	set dlnames "libplplottcltkd.so.11.0 libplplottcltk.so.11.0";
	set file ""
	foreach reldir $searchdirs {
	    foreach dlname $dlnames {
		set driver [file join $dir $reldir $dlname]
		#puts "looking for driver file: $driver"
		if [file exists $driver] {
		    set file $driver
		    break
		}
	    }
	    if { $file != "" } { break }
	}
	if { $file == "" } {
	    error "load_pkg_Pltcl: could not find loadable driver"
	}

    } else {
    # This is probably broken, someone should fix it.
	if {[info exists tcl_platform(debug)]} {
	    set file [file join $dir plplot510d[info sharedlibextension]]
	} else {
	    set file [file join $dir plplot510[info sharedlibextension]]
	}
    }

    load $file Pltcl
# put core tcl scripts in path
    lappend auto_path $dir/tcl
    rename load_pkg_Pltcl {}
}

package ifneeded Pltcl 5 [list load_pkg_Pltcl $dir]

