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#==========================================================================
#
# Copyright Insight Software Consortium
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0.txt
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
#==========================================================================*/
# Define ITK Tcl data utilities.
namespace eval itk::data {
# Require the itk packages.
package require InsightToolkit
# Put the ITK_DATA_ROOT setting in the global namespace.
# Look for the -D command line option.
if {! [info exists ::ITK_DATA_ROOT] && [info exists argc]} {
set argcm1 [expr $argc - 1]
for {set i 0} {$i < $argcm1} {incr i} {
if {[lindex $argv $i] == "-D" && $i < $argcm1} {
set ::ITK_DATA_ROOT [lindex $argv [expr $i + 1]]
break
}
}
}
# Check for the environment variable ::ITK_DATA_ROOT.
if {! [info exists ::ITK_DATA_ROOT] && [info exists env(ITK_DATA_ROOT)]} {
set ::ITK_DATA_ROOT $env(ITK_DATA_ROOT)
}
# Use the default data root.
if {! [info exists ::ITK_DATA_ROOT]} {
set ::ITK_DATA_ROOT $::itk::data::defaultDataRoot
}
}
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