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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 InitExternalFile {} {
global ds9
if {[file exists "./$ds9(ext,file)"]} {
ProcessExternalFile "./$ds9(ext,file)"
} elseif {[file exists "./$ds9(ext,alt)"]} {
ProcessExternalFile "./$ds9(ext,alt)"
} elseif {[file exists "~/$ds9(ext,file)"]} {
ProcessExternalFile "~/$ds9(ext,file)"
} elseif {[file exists "~/$ds9(ext,alt)"]} {
ProcessExternalFile "~/$ds9(ext,alt)"
}
}
proc ProcessExternalFile {fn} {
global extFits
set status 1
if {[file exists "$fn"]} {
set id [open $fn r]
while {[gets $id line] >= 0} {
# empty line
if {[string length $line] == 0} continue
# comments
if {[string range $line 0 0] == "\#"} continue
# else
switch -- $status {
1 {
# eat the line
set template {}
set status 2
}
2 {
set template "$line"
set status 3
}
3 {
# eat the line
set status 4
}
4 {
if {"$template" != {} && "$line" != {}} {
foreach t $template {
set extFits($t) "$line"
}
}
set status 1
}
}
}
close $id
}
}
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