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#  Copyright (C) 1999-2017
#  Smithsonian Astrophysical Observatory, Cambridge, MA, USA
#  For conditions of distribution and use, see copyright notice in "copyright"

package provide DS9 1.0

proc ImportENVIFile {hdr fn} {
    global loadParam

    set loadParam(file,type) envi
    set loadParam(file,mode) {}
    set loadParam(load,type) smmap
    set loadParam(file,name) $fn
    set loadParam(file,header) $hdr
    set loadParam(load,layer) {}

    ProcessLoad
}

proc ExportENVIFile {hdr fn opt} {
    global current

    if {$fn == {} || $current(frame) == {}} {
	return
    }

    if {![$current(frame) has fits]} {
	return
    }

    $current(frame) save envi file "\{$hdr\}" "\{$fn\}" $opt
}

proc ProcessENVICmd {varname iname sock fn} {
    upvar $varname var
    upvar $iname i

    global loadParam
    global current

    set layer {}

    switch -- [string tolower [lindex $var $i]] {
	new {
	    incr i
	    CreateFrame
	}
	mask {
	    incr i
	    # not supported
	}
	slice {
	    incr i
	    # not supported
	}
    }

    if {$sock != {}} {
	# xpa
	if {0} {
	    # not supported
	} else {
	    set fn [lindex $var $i]
	    set fn2 [lindex $var [expr $i+1]]
	    if {$fn2 == {}} {
		set fn2 [FindENVIDataFile $fn]
	    }
	    ImportENVIFile $fn $fn2
	}
    } else {
	# comm
	if {0} {
	    # not supported
	} else {
	    set fn [lindex $var $i]
	    set fn2 [lindex $var [expr $i+1]]
	    if {$fn2 == {}} {
		set fn2 [FindENVIDataFile $fn]
	    }
	    ImportENVIFile $fn $fn2
	}
    }
    FinishLoad
}

proc FindENVIDataFile {fn} {
    set rn [file rootname $fn]
    foreach ff {{bil} {bip} {bsq} {raw} {cube}} {
	set fn2 "$rn.$ff"
	if {[file exists $fn2]} {
	    return $fn2
	}
    }
    return {}
}