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 %TITLE 'WFCOPLIN - copy a line'
MODULE WFCOPLIN (				! Copy a line
		IDENT = '1-007'			! File: WFCOPLIN.BLI Edit: GB1007
		) =
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:
!
!	Copy a line, optionally deleting it.
!
! ENVIRONMENT:	Runs at any access mode - AST reentrant
!
! AUTHOR: Bob Kushlis, CREATION DATE: October 16, 1978
!
! MODIFIED BY:
!
! 1-001	- Original.  DJS 23-Feb-1981.  This module was created by
!	extracting routine EDT$$CPY_LN  from module EDTWF.
! 1-002	- Regularize headers.  JBS 16-Mar-1981
! 1-003 - Save line being copied since we don't have indirect access
!	  into the workfile anymore. STS 23-Feb-1982
! 1-004 - Make line larger.  STS 23-Feb-1982
! 1-005 - Change stack allocation to get heap storage. STS 05-Mar-1982
! 1-006	- Give an error return if the heap storage is not available.  JBS 09-Jun-1982
! 1-007 - Change call to CPY_MEM to CH$MOVE.  GB 7-Mar-83
!--

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

REQUIRE 'EDTSRC:TRAROUNAM';

FORWARD ROUTINE
    EDT$$CPY_LN;

!
! INCLUDE FILES:
!

REQUIRE 'EDTSRC:EDTREQ';

!
! MACROS:
!
!	NONE
!
! EQUATED SYMBOLS:
!
!	NONE
!
! OWN STORAGE:
!
!	NONE
!
! EXTERNAL REFERENCES:
!
!	In the routine
%SBTTL 'EDT$$CPY_LN  - copy a line'

GLOBAL ROUTINE EDT$$CPY_LN (			! Copy a line
    DELETE					! 1 = delete after copying
    ) =

!++
! FUNCTIONAL DESCRIPTION:
!
!	Copy a line.  The delete parameter indicates that the line
!	should be deleted after copying.
!
! FORMAL PARAMETERS:
!
!  DELETE		1 = delete after copying
!
! IMPLICIT INPUTS:
!
!	CUR_BUF
!	ALT_BUF
!	WK_LN
!
! IMPLICIT OUTPUTS:
!
!	CUR_BUF
!
! ROUTINE VALUE:
!
!	1 = OK
!	0 = failed for lack of heap storage
!
! SIDE EFFECTS:
!
!	NONE
!
!--

    BEGIN

    EXTERNAL ROUTINE
	EDT$$ALO_HEAP,				! Allocate heap storage
	EDT$$DEA_HEAP : NOVALUE,		! Deallocate heap storage
	EDT$$DEL_CURLN : NOVALUE,
	EDT$$INS_LN : NOVALUE,
	EDT$$RD_CURLN : NOVALUE;

    EXTERNAL
	CUR_BUF : REF TBCB_BLOCK,	! Current text buffer control block
	ALT_BUF,				! Alternate text buffer control block
	WK_LN : REF LIN_BLOCK;		! Pointer to current line

    LOCAL
	SAVE_TBCB,
	LINE,
	LINE_LEN;

!+
! since we do not have indirect access to the workfile with callable EDT
! we must copy out the line we wish to copy before we get the next bucket.
!-

    IF ( NOT EDT$$ALO_HEAP (%REF (512), LINE)) THEN RETURN (0);

    LINE_LEN = .WK_LN [LIN_LENGTH];
    CH$MOVE (.LINE_LEN, CH$PTR (WK_LN [LIN_TEXT],, BYTE_SIZE),
			CH$PTR (.LINE,, BYTE_SIZE));
    SAVE_TBCB = .CUR_BUF;
    CUR_BUF = .ALT_BUF;
    EDT$$RD_CURLN ();
    EDT$$INS_LN (CH$PTR (.LINE,, BYTE_SIZE), .LINE_LEN);
    EDT$$DEA_HEAP (%REF (512), LINE);
    CUR_BUF = .SAVE_TBCB;
    EDT$$RD_CURLN ();

    IF .DELETE THEN EDT$$DEL_CURLN ();

    RETURN (1);
    END;					! of routine EDT$$CPY_LN


END
ELUDOM