#
# $Source: /home/nlfm/Working/Zircon/Released/lib/RCS/frivol.tcl,v $
# $Date: 1998/06/07 19:13:12 $
# $Revision: 1.18.1.7 $
#
package provide zircon 1.18
#
proc strrev {t} {
    set r {}
    set l [string length $t]
    for {set i 0} {$i < $l} {incr i} {
	set r [string index $t $i]$r
    }
    return $r
}
#

proc rot13 {t} {
    scan A %c Aval
    scan M %c Mval
    scan Z %c Zval
    scan a %c aVal
    scan m %c mVal
    scan z %c zVal
    set r {}
    set l [string length $t]
    for {set i 0} {$i < $l} {incr i} {
	set c [string index $t $i]
	scan $c %c v
	if {($v >= $Aval && $v <= $Mval ) \
	  || ($v >= $aVal && $v <= $mVal)} {
	    incr v 13
	    set c [format %c $v]
	} elseif {($v > $Mval && $v <= $Zval ) \
	  || ($v > $mVal && $v <= $zVal)} {
	    incr v -13
	    set c [format %c $v]
	}
	append r $c
    }
    return $r
}
#
proc toMorse {str} {
    global zMorse

    set res {}
    foreach ch [split $str {}] {
	if {[info exists zMorse($ch)]} {
	    append res "$zMorse($ch) "
	} {
	    append res $ch
	}
    }
    return $res
}