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 %TITLE 'CHMMESS - output a message'
MODULE CHMMESS (				! Output a message
		IDENT = '3-001'			! File: CHMMESS.BLI Edit: GB3001
		) =
BEGIN
!
!			  COPYRIGHT (c) 1981, 1985 BY
!	      DIGITAL EQUIPMENT CORPORATION, MAYNARD, MASS.
!		ALL RIGHTS RESERVED.
!
! THIS SOFTWARE IS FURNISHED UNDER A LICENSE AND MAY BE USED AND  COPIED
! ONLY  IN  ACCORDANCE  WITH  THE  TERMS  OF  SUCH  LICENSE AND WITH THE
! INCLUSION OF THE ABOVE COPYRIGHT NOTICE.  THIS SOFTWARE OR  ANY  OTHER
! COPIES  THEREOF MAY NOT BE PROVIDED OR OTHERWISE MADE AVAILABLE TO ANY
! OTHER PERSON.  NO TITLE TO AND OWNERSHIP OF  THE  SOFTWARE  IS  HEREBY
! TRANSFERRED.
!
! THE INFORMATION IN THIS SOFTWARE IS SUBJECT TO CHANGE  WITHOUT  NOTICE
! AND  SHOULD  NOT  BE  CONSTRUED  AS  A COMMITMENT BY DIGITAL EQUIPMENT
! CORPORATION.
!
! DIGITAL ASSUMES NO RESPONSIBILITY FOR THE USE OR  RELIABILITY  OF  ITS
! SOFTWARE ON EQUIPMENT WHICH IS NOT SUPPLIED BY DIGITAL.
!

!++
! FACILITY:	EDT -- The DEC Standard Editor
!
! ABSTRACT:
!
!	This module outputs a message on the last line of the terminal.
!
! ENVIRONMENT:	Runs at any access mode - AST reentrant
!
! AUTHOR: Bob Kushlis, CREATION DATE: Unknown
!
! MODIFIED BY:
!
! 1-001	- Original.  DJS 04-Feb-1981.  This module was created by
!	extracting the routine EDT$$OUT_MSG  from module CHANGE.BLI.
! 1-002	- Regularize headers.  JBS 03-Mar-1981
! 1-003 - Make this routine general for messages or strings.  SMB 30-Jun-1982
! 1-004 - Remove setting to TI_WRSTR in case HCPY change mode.  SMB 02-Jul-1982
! 1-005	- Set LASTMSG.  JBS 05-Jul-1982
! 1-006	- Call EDT$$FMT_STR instead of EDT$$FMT_LIT, so EDT$$G_PRV_COL will be
!	   kept up to date.  JBS 05-Oct-1982
! 1-007	- Don't clear EDT$$G_SCR_CHGD.  JBS 09-Oct-1982
! 1-008	- Bypadd most of the fancy stuff if we are in hardcopy change mode.  JBS 16-Nov-1982
! 1-009 - Check for terminal type unkown also.  SMB 03-Dec-1982
! 3-001 - Add updates from V3 source kit.  GB 27-Apr-1983
!--

%SBTTL 'Declarations'
!
! TABLE OF CONTENTS:
!

REQUIRE 'EDTSRC:TRAROUNAM';

FORWARD ROUTINE
    EDT$$OUT_MSG : NOVALUE;			! Output a message on the last line of the terminal

!
! INCLUDE FILES:
!

REQUIRE 'EDTSRC:EDTREQ';

!
! MACROS:
!
!	NONE
!
! EQUATED SYMBOLS:
!
!	NONE
!
! OWN STORAGE:
!
!	NONE
!
! EXTERNAL REFERENCES:
!
!	In the routine
%SBTTL 'EDT$$OUT_MSG  - output a message'

GLOBAL ROUTINE EDT$$OUT_MSG (			! Output a message
    POS, 					! Line number for this message
    MESS, 					! The message number to output
    ADDR, 					! Address of a string
    LEN						! Length of a string
    ) : NOVALUE =

!++
! FUNCTIONAL DESCRIPTION:
!
!	This routine outputs a message on the last line of the terminal.
!	The input parameters are the line position for the message,
!	the message number (if it is a message), or the message string and
!	its length if no message number is present.
!
! FORMAL PARAMETERS:
!
!  POS			The line number on which to print message
!
!  MESS			The number of the message to output
!
!  ADDR			The address of a string message
!
!  LEN			The length of the string message
!
! IMPLICIT INPUTS:
!
!	TI_TYP
!	FMT_WRRUT
!	MESSAGE_LINE
!
! IMPLICIT OUTPUTS:
!
!	TIN_ECHOPOS
!	MSGFLG
!	LASTMSG
!
! ROUTINE VALUE:
!
!	NONE
!
! SIDE EFFECTS:
!
!	NONE
!
!--

    BEGIN

    EXTERNAL ROUTINE
	EDT$$STOP_WKINGMSG,		! Stop the working message
	EDT$$FMT_STR,			! Put a string in format buffer
	EDT$$OUT_FMTBUF,		! Output the format buffer
	EDT$$SC_POSCSIF,		! Put cursor position in format buffer
	EDT$$SC_ERATOEOL,		! Erase to end of line
	EDT$$SC_REVID,			! Start reverse video
	EDT$$MSG_TOSTR;			! Get message text

    EXTERNAL
	MESSAGE_LINE,			! Message line
	TIN_ECHOPOS,			! Column to start message echo
	MSGFLG,				! 1 = erase the message line on the next keystroke
	LASTMSG,			! The last message printed
	TI_TYP;				! Type of terminal

    EDT$$STOP_WKINGMSG ();
!+
! If the message is being printed on the last line, then we want it to
! stay there until the user hits a key, but we don't want to issue the
! PRTC message.
!-

    IF (.POS EQL .MESSAGE_LINE + 1)
    THEN
	BEGIN
	TIN_ECHOPOS = 0;
	MSGFLG = 1;
	END;

!+
! Don't do anything fancy if this is a hard copy terminal.
!-

    IF (.TI_TYP NEQ TERM_HCPY) AND (.TI_TYP NEQ TERM_UNKNOWN)
    THEN
	BEGIN
!+
! Force the cursor to the indicated line and column
!-
	EDT$$SC_POSCSIF (.POS, .TIN_ECHOPOS);
!+
! Erase the line.
!-
	EDT$$SC_ERATOEOL ();
!+
! Turn reverse video on.
!-
	EDT$$SC_REVID ();

	END;
!+
! Get the message.
!-

    IF (.LEN NEQ 0)
    THEN
	BEGIN
	EDT$$FMT_STR (.ADDR, .LEN);
	LASTMSG = 1;
	END
    ELSE
	BEGIN
	EDT$$MSG_TOSTR (.MESS);
	LASTMSG = .MESS;
	END;

!+
! Write out the buffer.
!-
    EDT$$OUT_FMTBUF ();
    END;					! of routine EDT$$OUT_MSG


END
ELUDOM