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 %TITLE 'MESSAGE - message text for TOPS20'
MODULE MESSAGE (				! Message text for TOPS20
		IDENT = '1-004'			! File: MESSAGE.B36 Edit: CJG1004
		) =
BEGIN
!COPYRIGHT (c) DIGITAL EQUIPMENT CORPORATION 1981, 1988.  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 THAT IS NOT SUPPLIED BY DIGITAL.
!
!
!++
! FACILITY:	EDT -- The DEC Standard Editor
!
! ABSTRACT:
!
!	This module contains the error messages and a routine which
!	locates a message by number and puts it out though the formatting
!	routines.
!
! ENVIRONMENT:	TOPS20 only.
!
! AUTHOR: Graham Beech, CREATION DATE: 21-January-1983
!
! MODIFIED BY:
!
! 1-001 - Original.  GB 21-Jan-1983
! 1-002 - Add updates from V3 sources.  GB 20-Jun-1983
! 1-003 - Modify the table layout to improve performance. CJG 20-Jun-1983
! 1-004 - Simplify and fix code for system errors. CJG 23-Dec-1983
!--

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

REQUIRE 'EDTSRC:TRAROUNAM';

FORWARD ROUTINE
    EDT$$MSG_TOSTR : NOVALUE;

!
! INCLUDE FILES:
!

REQUIRE 'EDTSRC:EDTREQ';

REQUIRE 'SYS:JSYS';

!
! MACROS:
!

MACRO
    MESSAGE_SEVERITY =	34, 2, 0 %,
    MESSAGE_LENGTH =	27, 7, 0 %,
    MESSAGE_NUMBER =	18, 9, 0 %,
    MESSAGE_TEXT =	 0,18, 0 %;

!+
! EDT messages
!-
!+
! Lay out the text for the error messages.  The source is in file
! ERRMSG.REQ.
!-

MACRO
    ERR [NAME, SEVERITY, TEXT, ENAME] =
 
	FLD (%NAME ('ERR_', NAME), %O'000777000000') +
	FLD (%CHARCOUNT (TEXT),    %O'177000000000') +
	FLD (UPLIT (%ASCIZ TEXT),  %O'000000777777') %;

BIND
    MESSAGE_INFO = UPLIT (ERROR_MESSAGES) : BLOCK;

UNDECLARE %QUOTE
    ERR;

!
! OWN STORAGE:
!
!	NONE
!
! EXTERNAL REFERENCES:
!
!	In the routine
!--

%SBTTL 'EDT$$MSG_TOSTR  - format a message'

GLOBAL ROUTINE EDT$$MSG_TOSTR (			! Format a message
    MESS_NUM					! Message number
    ) : NOVALUE =

!++
! FUNCTIONAL DESCRIPTION:
!
!	Format a message, given its number.
!
! FORMAL PARAMETERS:
!
!  MESS_NUM		The number of the message to format
!
! IMPLICIT INPUTS:
!
!	NONE
!
! IMPLICIT OUTPUTS:
!
!	NONE
!
! ROUTINE VALUE:
!
!	NONE
!
! SIDE EFFECTS:
!
!	NONE
!
!--

    BEGIN

    EXTERNAL ROUTINE
	EDT$$FMT_DCML,
	EDT$$FMT_STR;

!+
! If this is a system eror message, then get the error string, find its length
! and print it on the terminal.
!-

    IF (.MESS_NUM GTR $ERBAS)
    THEN
	BEGIN

	LOCAL
	    PTR,
	    TEMP : VECTOR [CH$ALLOCATION (80)];

	PTR = CH$PTR (TEMP);
	_ERSTR (.PTR, %O'400000000000' + .MESS_NUM, 0; PTR);
	EDT$$FMT_STR (CH$PTR (TEMP), CH$DIFF (.PTR, CH$PTR (TEMP)));
	RETURN;
	END;

!+
! If there is no message in the table, arrange to print the error number in decimal.
!-

    IF (.MESS_NUM GTR %NUMBER (ERROR_CODE))
    THEN
	BEGIN
	EDT$$FMT_STR (CH$PTR (UPLIT ('Error: ')), 7);
	EDT$$FMT_DCML (.MESS_NUM);
	RETURN;
	END;

!+
! We have found a message, format it.
!-

    EDT$$FMT_STR (CH$PTR (.MESSAGE_INFO [.MESS_NUM - 1, MESSAGE_TEXT]),
		  .MESSAGE_INFO [.MESS_NUM - 1, MESSAGE_LENGTH]);
    RETURN;
    END;


END
ELUDOM