*******************************************************************************
*
*	Change the current Terminal Type
*
*	Module	%M%	Version	%I% 	Date	%H%
*
*	(c) Copyright 1998 Ardent Software Inc. - All Rights Reserved
*	This is unpublished proprietary source code of Ardent Software Inc.
*	The copyright notice above does not evidence any actual or intended
*	publication of such source code.
*
*******************************************************************************
*
*	Maintenence log - insert most recent change descriptions at top
*
*	Date.... GTAR# WHO Description.........................................
*	10/14/98 23801 SAP Change copyrights. 
*	07/09/97 20481 PEJ Reject map changes when NLS disabled
*			   Retain map setting when terminal type changed
*	05/22/97 20678 PEJ Fix map name for case invert code
*	12/15/94 15740 JC  Addition of NLS support
*	08/09/93 12302 ALC Added PI/open options FUNDAMENTAL and VERIFY.SUP.
*	07/21/92 8767  PVW make the ? option work
*	08/29/89 5014  JWT make terminal name optional
*	07/25/88   -    -  Maintenence log purged at 5.2.1, see release 5.1.10.
*
*******************************************************************************

$include UNIVERSE.INCLUDE TERMINFO
$include UNIVERSE.INCLUDE FILENAMES.H
$include UNIVERSE.INCLUDE UVNLS.H

equ HT to char(9)

dim argv(20)
matparse argv from trim(@sentence)," "

* Set pointer to first real argument

argp = if downcase( argv( 1 ) ) = "run" then 4 else 2

width  = ""
length = ""

* Pick up the current terminal type and NLS map names

orig.type = @TERM.TYPE
term.type = ""

NLS.on = SYSTEM( NLS$ON)

if NLS.on then
  orig.map    = SYSTEM( NLS$TERMMAP )
  orig.auxmap = SYSTEM( NLS$AUXMAP  )
end else
  orig.map = ""
  orig.auxmap = ""
end

* Use current settings for omitted arguments

map       = orig.map
auxmap    = orig.auxmap

hush   = 0
verify = 1

if argv(argp) = "" then
ask:
	crt
	crt
	crt "Enter Terminal name (or '?' to list possible choices)":
	input term.type

	heading ""
	printer reset

	begin case
	case term.type = "?"
		openseq UV.ROOT:"/terminfo/index" to f.index then
			heading "Available Terminal Types'CLL'Name.......... Description...................................................'L'"
			loop
				readseq l from f.index else exit
				crt field(l,HT,1)"l#14 ":field(l,HT,2,99)
			repeat
			goto ask
		end
 	case term.type = ""
		stop
	end case
end

loop
	key   = upcase(argv(argp))
	argp += 1
	begin case
	case key = ""
		exit
	case key = "WIDTH"
		width  = argv(argp)
		argp   += 1
	case key = "LENGTH"
		length  = argv(argp)
		argp   += 1
	case key = "MAP"
	  if NLS.on then
		map = argv(argp)
		argp   += 1
	  end else
	    stop "Cannot change maps when NLS disabled"
	  end
	case key = "AUXMAP"
	  if NLS.on then
		auxmap = argv(argp)
		argp   += 1
	  end else
	    stop "Cannot change maps when NLS disabled"
	  end
	case key = "AUTONL"
		NULL
	case key = "NEEDNL"
		NULL
	case key = "HUSH"
		hush = 1
	case key = "FUNDAMENTAL"
		NULL
	case key = "VERIFY.SUP"
		verify = 0
	case 1
		if term.type = "" then
		  term.type = argv( argp - 1 )
		end else
		  crt "Unidentified word: " : key
		end
	end case
repeat

* Attempt to apply the requested change

if term.type = "" then
  term.type = orig.type
end

perform "TERM ":width:",":length:",0,,,,,,":map:",":auxmap:",":term.type

terminfo$ = terminfo(0);		* Get the current terminfo data

if TERMINAL.NAME = "" then

	* Change didn't work, try again with lowercase terminal type

	perform "TERM ,,,,,,,,":map:",":auxmap:",":downcase(term.type)
	terminfo$ = terminfo(0);	* Get the current terminfo data
	if TERMINAL.NAME = "" then

		* Still didn't work, re-instate original

		perform "TERM ,,,,,,,,":orig.map:",":orig.auxmap:",":orig.type
		print quote(term.type):" is not a valid terminal type."
		if verify then
			goto ask
		end
	end
end

if hush
else crt field(TERMINAL.NAME, "|", dcount(TERMINAL.NAME,"|")):" (":@TERM.TYPE:")"