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 %TITLE 'CHMGQUSTR - scan a search string'
MODULE CHMGQUSTR (				! Scan a search string
		IDENT = '1-001'			! File: CHMGQUSTR.BLI Edit: DJS1001
		) =
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 scans over the search string when used as an entity.
!
! 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$$SCAN_SEASTR  from module CHANGE.BLI.
!--

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

REQUIRE 'EDTSRC:TRAROUNAM';

FORWARD ROUTINE
    EDT$$SCAN_SEASTR : NOVALUE;			! Scan over the search string when used as an entity

!
! INCLUDE FILES:
!

REQUIRE 'EDTSRC:EDTREQ';

!
! MACROS:
!
!	NONE
!
! EQUATED SYMBOLS:
!
!	NONE
!
! OWN STORAGE:
!
!	NONE
!
! EXTERNAL REFERENCES:
!
!	In the routine
%SBTTL 'EDT$$SCAN_SEASTR  - scan a search string'

GLOBAL ROUTINE EDT$$SCAN_SEASTR 		! Scan a search string
    : NOVALUE =

!++
! FUNCTIONAL DESCRIPTION:
!
!	This routine scans over the search string when used as an entity.
!	The address of the string is placed in the global variable SEA_PTR
!	and the length in SEA_LEN .
!
!	The command pointer CMD_PTR  is left pointing one character beyond the
!	end of the command.
!
! FORMAL PARAMETERS:
!
!	NONE
!
! IMPLICIT INPUTS:
!
!	CMD_END
!	CMD_PTR
!
! IMPLICIT OUTPUTS:
!
!	CMD_PTR
!	SEA_PTR
!	SEA_LEN
!
! ROUTINE VALUE:
!
!	NONE
!
! SIDE EFFECTS:
!
!	NONE
!
!--

    BEGIN

    EXTERNAL
	CMD_END,				! End of command pointer
	CMD_PTR,				! Command string pointer
	SEA_PTR,				! Pointer to search string.
	SEA_LEN;				! Length of search string.

    LOCAL
	QUOTE_CHAR;

!+
! The quote character is one character back, get it so we can match.
!-
    SEA_PTR = .CMD_PTR;
    SEA_LEN = 0;
    QUOTE_CHAR = CH$RCHAR (CH$PLUS (.CMD_PTR, -1));

    WHILE ((CH$PTR_NEQ (.CMD_PTR, .CMD_END)) AND
	   (CH$RCHAR_A (CMD_PTR) NEQ .QUOTE_CHAR)) DO
	    SEA_LEN = .SEA_LEN + 1;

    END;

END
ELUDOM