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 %TITLE 'CHMSAVPOS - save the current buffer position'
MODULE CHMSAVPOS (				! Save the current buffer position
		IDENT = '1-003'			! File: CHMSAVPOS.BLI Edit: GB1003
		) =
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 saves the current buffer position in a
!	position block.
!
! 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$$SAV_BUFPOS  from module CHANGE.BLI.
! 1-002	- Regularize headers.  JBS 03-Mar-1981
! 1-003 - Cope with bigger than 7 bit bytes in line buffer.  GB 3-Mar-1983
!--

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

REQUIRE 'EDTSRC:TRAROUNAM';

FORWARD ROUTINE
    EDT$$SAV_BUFPOS : NOVALUE;			! Save the current buffer position

!
! INCLUDE FILES:
!

REQUIRE 'EDTSRC:EDTREQ';

!
! MACROS:
!
!	NONE
!
! EQUATED SYMBOLS:
!
!	NONE
!
! OWN STORAGE:
!
!	NONE
!
! EXTERNAL REFERENCES:
!
!	In the routine
%SBTTL 'EDT$$SAV_BUFPOS  - save the current buffer position'

GLOBAL ROUTINE EDT$$SAV_BUFPOS (		! Save the current buffer position
	POS					! the position block in which to save
    ) : NOVALUE =

!++
! FUNCTIONAL DESCRIPTION:
!
!	This routine saves the current buffer position in a position block.
!
! FORMAL PARAMETERS:
!
!  POS			The position block in which the current buffer position
!			is to be saved
!
! IMPLICIT INPUTS:
!
!	CUR_BUF
!	LN_BUF
!	LN_PTR
!
! IMPLICIT OUTPUTS:
!
!	NONE
!
! ROUTINE VALUE:
!
!	NONE
!
! SIDE EFFECTS:
!
!	NONE
!
!--

    BEGIN

    EXTERNAL ROUTINE
	EDT$$RPL_CHGDLN;			! Declare current line as changed

    EXTERNAL
	CUR_BUF : REF TBCB_BLOCK,	! The current buffer tbcb
	LN_BUF,				! Current line buffer
	LN_PTR;				! Current character pointer

    MAP
	POS : REF POS_BLOCK;

!+
! Update the current line if necessary.
!-
    EDT$$RPL_CHGDLN ();
    EDT$$CPY_MEM (POS_SIZE, .CUR_BUF, .POS);
    POS [POS_CHAR_POS] = CH$DIFF (.LN_PTR, CH$PTR (LN_BUF, 0, BYTE_SIZE));
    END;


END
ELUDOM