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 %TITLE 'CHMPASTE - change mode PASTE command'
MODULE CHMPASTE (				! Change mode PASTE command
		IDENT = '3-001'			! File: CHMPASTE.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 executes the change mode PASTE command.
!
! 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$$PST_CMD  from the module CHANGE.BLI.
! 1-002	- Regularize headers.  JBS 03-Mar-1981
! 1-003	- Change SPLIT_LINE to EDT$$SPLT_LNINS .  JBS 30-Mar-1981
! 1-004 - Use new message codes.  JBS 06-Aug-1981 (this note added 24-May-1982)
! 1-005	- Set a flag if control C actually aborts something.  JBS 24-May-1982
! 1-006	- New screen update logic.  JBS 13-Sep-1982
! 1-007	- Remove EDT$$G_LN_NO for new screen update logic.  JBS 29-Sep-1982
! 1-008 - Convert to new line number compare macro. STS 20-Oct-1982
! 1-009 - Add a parameter to the split line routines.  SMB 16-Nov-1982
! 1-010	- Remove parameter from EDT$$SPLT_LN.  JBS 17-Nov-1982
! 1-011	- Add a parameter to EDT$$COMB_LN.  JBS 28-Dec-1982
! 3-001 - Add updates from V3 kit.  GB 13-May-1983
!--

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

REQUIRE 'EDTSRC:TRAROUNAM';

FORWARD ROUTINE
    EDT$$PST_CMD;				! Execute the paste command

!
! INCLUDE FILES:
!

REQUIRE 'EDTSRC:EDTREQ';

!
! MACROS:
!
!	NONE
!
! EQUATED SYMBOLS:
!
!	NONE
!
! OWN STORAGE:
!
!	NONE
!
! EXTERNAL REFERENCES:
!
!	In the routine
%SBTTL 'EDT$$PST_CMD  - change mode PASTE command'

GLOBAL ROUTINE EDT$$PST_CMD 			! Change mode PASTE command
    =

!++
! FUNCTIONAL DESCRIPTION:
!
!	This routine executes the paste command.  The variable ALT_BUF  has
!	the address of the TBCB for the buffer to be pasted.
!
! FORMAL PARAMETERS:
!
!	NONE
!
! IMPLICIT INPUTS:
!
!	ALT_BUF
!	CUR_BUF
!	LNO0
!	LNO1
!	WK_LN
!
! IMPLICIT OUTPUTS:
!
!	PST_CNT
!	CC_DONE
!
! ROUTINE VALUE
!
!	A value of 0 is returned if the paste failed.
!
! SIDE EFFECTS:
!
!	NONE
!
!--

    BEGIN

    EXTERNAL ROUTINE
	EDT$$INS_STR,				! Insert a string of characters at the current position
	EDT$$MSG_BELL : NOVALUE,		! Output a message to the terminal with a warning bell
	EDT$$CHK_CC,				! Check to see if a CTRL/C has been typed
	EDT$$COMB_LN : NOVALUE,			! Combine the current line with the one immediately above it
	EDT$$CS_DWN,				! Move down a line
	EDT$$CS_LEFT,				! Move left a character
	EDT$$SPLT_LN : NOVALUE,			! Split a line of text at the current cursor position
	EDT$$SPLT_LNINS : NOVALUE,		! Split a line of text at the current cursor position
	EDT$$CMP_LNO,				! Compare line numbers
	EDT$$END_INS,				! End an insert sequence
	EDT$$RD_CURLN,				! Get the current line
	EDT$$RD_NXTLN,				! Move forward a line
	EDT$$START_INS,				! Start an insert sequence
	EDT$$TOP_BUF;				! Go to top of buffer

    EXTERNAL
	PST_CNT,				! No. of characters pasted.
	ALT_BUF : REF TBCB_BLOCK,	! Alternate buffer used for cut/paste.
	CUR_BUF : REF TBCB_BLOCK,	! The current buffer tbcb
	LNO0,				! Line number 10**0 (1)
	LNO1,				! Line number 10**1 (10)
	WK_LN : REF LIN_BLOCK,		! Current line pointer
	CC_DONE;				! Set to 1 if control C actually aborts something

    MESSAGES ((ATTPASCUR));

    LOCAL
	SAVE_TBCB;

    IF (.ALT_BUF EQL 0) THEN RETURN (0);

!+
! Check for paste of the current buffer.
!-

    IF (.ALT_BUF EQL .CUR_BUF)
    THEN
	BEGIN
	EDT$$MSG_BELL (EDT$_ATTPASCUR);
	RETURN (0);
	END;

!+
! Save the address of the current text buffer.
!-
    SAVE_TBCB = .CUR_BUF;
    PST_CNT = 0;
!+
! Check for empty buffer.
!-

    IF (EDT$$CMP_LNO (LNO0, ALT_BUF [TBCB_LINE_COUNT]) EQL 1) THEN RETURN (1);


!+
! Split the current line.
!-
    EDT$$SPLT_LNINS (0);
    EDT$$CS_LEFT ();
    EDT$$START_INS ();				! Perform initialization for text insertion
!+
! Position to the front of the paste buffer.
!-
    CUR_BUF = .ALT_BUF;
    EDT$$TOP_BUF ();

    WHILE 1 DO 					! Loop through all of the paste buffer.
	BEGIN
!+
! Handle the next line.
!-
	EDT$$INS_STR (CH$PTR (WK_LN [LIN_TEXT], 0, BYTE_SIZE), .WK_LN [LIN_LENGTH]);
	PST_CNT = .PST_CNT + .WK_LN [LIN_LENGTH] + 1;

	IF ( NOT EDT$$RD_NXTLN ()) THEN EXITLOOP;

!+
! Check for CTRL/C.
!-

	IF EDT$$CHK_CC ()
	THEN
	    BEGIN
	    CC_DONE = 1;
	    EXITLOOP;
	    END;

	CUR_BUF = .SAVE_TBCB;
	EDT$$RD_CURLN ();
	EDT$$SPLT_LN ();
	CUR_BUF = .ALT_BUF;
	EDT$$RD_CURLN ();
	END;

    CUR_BUF = .SAVE_TBCB;
    EDT$$RD_CURLN ();
    EDT$$CS_DWN ();
    EDT$$COMB_LN (0);
    EDT$$END_INS ();				! End the text insertion sequence
    PST_CNT = .PST_CNT - 1;
    RETURN (1)
    END;


END
ELUDOM