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 %TITLE 'CHMGCOUNT - look for a repeat or entity count'
MODULE CHMGCOUNT (				! Look for a repeat or entity count
		IDENT = '3-003'			! File: CHMGCOUNT.BLI Edit: GB3003
		) =
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 looks for a repeat/entity count.
!
! 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$$CHK_CNT  from module CHANGE.BLI.
! 1-002	- Regularize headers.  JBS 02-Mar-1981
! 1-003	- Don't allow repeat counts greater than 32767.  JBS 10-Mar-1982
! 1-004	- Change numeric test.  JBS 19-Jul-1982
! 1-005	- Add conditional for VT220 support.  JBS 11-Feb-1983
! 3-001 - Change CMD_BUF to CMD_PTR since this is now the command ptr.  GB 8-Apr-1983
! 3-002 - Add updates from V3 source kit.  GB 27-Apr-1983
! 3-003 - Remove VT220 conditional to speed up code. CJG 25-Nov-1983
!--

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

REQUIRE 'EDTSRC:TRAROUNAM';

FORWARD ROUTINE
    EDT$$CHK_CNT;				! Look for a repeat/entity count

!
! INCLUDE FILES:
!

REQUIRE 'EDTSRC:EDTREQ';

LIBRARY 'EDTSRC:TRANSLATE';

!
! MACROS:
!
!	NONE
!
! EQUATED SYMBOLS:
!
!	NONE
!
! OWN STORAGE:
!
!	NONE
!
! EXTERNAL REFERENCES:
!
!	In the routine
%SBTTL 'EDT$$CHK_CNT  - look for a repeat/entity count'

GLOBAL ROUTINE EDT$$CHK_CNT (			! Look for a repeat or entity count
    COUNT					! Where to store count
    ) =

!++
! FUNCTIONAL DESCRIPTION:
!
!	This routine looks for a repeat/entity count, and stores it in the
!	formal parameter COUNT.
!
! FORMAL PARAMETERS:
!
!  COUNT		Where to return the value of the count
!
! IMPLICIT INPUTS:
!
!	CMD_PTR
!
! IMPLICIT OUTPUTS:
!
!	CMD_PTR
!
! ROUTINE VALUE:
!
!	A value of 1 is returned if an explicit count was seen,
!	0 means no explicit count, COUNT retains its value,
!	2 means the count is invalid.
!
! SIDE EFFECTS:
!
!	NONE
!
!--

    BEGIN

    EXTERNAL
	CMD_PTR,				! Command string pointer
	CHAR_INFO : BLOCKVECTOR [256, 1];	! Information about characters

    LOCAL
	RET_VALUE,
	CHAR,
	L_COUNT;

    L_COUNT = ..COUNT;
    CHAR = CH$RCHAR (.CMD_PTR);

    IF NOT .CHAR_INFO [.CHAR, CI_DIG]
    THEN
	RET_VALUE = 0
    ELSE
	BEGIN
	RET_VALUE = 1;
	L_COUNT = 0;

	WHILE (.CHAR_INFO [.CHAR, CI_DIG] AND (.RET_VALUE EQL 1)) DO
	    BEGIN

	    IF (.L_COUNT GTR 3276)
	    THEN
		RET_VALUE = 2
	    ELSE
		BEGIN
		L_COUNT = .L_COUNT*10 + .CHAR - %C'0';
		CHAR = CH$A_RCHAR (CMD_PTR);
		END;

	    IF ((.L_COUNT GTR 32767) OR (.L_COUNT LSS 0)) THEN RET_VALUE = 2;

	    END;

	END;

    .COUNT = .L_COUNT;
    RETURN (.RET_VALUE);
    END;					! of routine EDT$$CHK_CNT

!<BLF/PAGE>

END
ELUDOM