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 %TITLE 'USSUBS - set up search and substitute strings'
MODULE USSUBS (				! Set up search and substitute strings
		IDENT = '1-005'			! File: USSUBS.BLI Edit: GB1005
		) =
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:
!
!	Set up search and substitute strings.
!
! ENVIRONMENT:	Runs at any access mode - AST reentrant
!
! AUTHOR: Bob Kushlis, CREATION DATE: February 7, 1978
!
! MODIFIED BY:
!
! 1-001	- Original.  DJS 19-FEB-1981.  This module was created by
!	extracting routine EDT$$SET_SEASUBSTR  from module UTIL.
! 1-002	- Regularize headers and don't store into the parameter list.  JBS 11-Mar-1981
! 1-003	- Add an error return.  JBS 04-May-1982
! 1-004	- Allow 0-length substitute strings.  JBS 09-Jun-1982
! 1-005 - Call CPY_STR with string pointers.  GB 21-Mar-1983
!--

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

REQUIRE 'EDTSRC:TRAROUNAM';

FORWARD ROUTINE
    EDT$$SET_SEASUBSTR;

!
! INCLUDE FILES:
!

REQUIRE 'EDTSRC:EDTREQ';

!
! MACROS:
!
!	NONE
!
! EQUATED SYMBOLS:
!
!	NONE
!
! OWN STORAGE:
!
!	NONE
!
! EXTERNAL REFERENCES:
!
!	In the routine
%SBTTL 'EDT$$SET_SEASUBSTR  - set up search and substitute strings'

GLOBAL ROUTINE EDT$$SET_SEASUBSTR (		! Set up search and substitute strings
    SEARCH, 					! Address of new search string
    SLEN, 					! Its length
    SUBSTR, 					! Address of new substitute string
    SUBLEN					! Its length
    ) =

!++
! FUNCTIONAL DESCRIPTION:
!
!	Set-up the the search and substitute strings.
!
! FORMAL PARAMETERS:
!
!  SEARCH		Pointer to the new search string
!
!  SLEN			Length of the search string.
!
!  SUBSTR		Pointer to the new substitute string.
!
!  SUBLEN		Length of substitute string.
!
! IMPLICIT INPUTS:
!
!	SUB_STR
!	SUB_STRLEN
!
! IMPLICIT OUTPUTS:
!
!	SUB_STR
!	SUB_STRLEN
!
! ROUTINE VALUE:
!
!	1 = success
!	0 = invalid string
!
! SIDE EFFECTS:
!
!	Calls EDT$$SET_SEASTR to set up the search string.
!
!--

    BEGIN

    EXTERNAL ROUTINE
	EDT$$SET_SEASTR;

    EXTERNAL
	SUB_STR : BLOCK [CH$ALLOCATION (64, BYTE_SIZE)],	! Last substitute string.
	SUB_STRLEN;			! Length of above.

    LOCAL
	RET_VALUE;

    IF ((.SUBLEN GEQ 0) AND (.SUBLEN LEQ 64))
    THEN
	BEGIN
	RET_VALUE = EDT$$SET_SEASTR (.SEARCH, .SLEN);

	IF .RET_VALUE
	THEN
	    BEGIN
	    EDT$$CPY_STR (.SUBLEN, .SUBSTR, CH$PTR (SUB_STR,, BYTE_SIZE));
	    SUB_STRLEN = .SUBLEN;
	    END;

	END
    ELSE
	RET_VALUE = 0;

    RETURN (.RET_VALUE);
    END;					! of routine EDT$$SET_SEASUBSTR


END
ELUDOM