\ DBF Fields

\ Copyright (C) 2000 Alex Malyshev (alexript@mail.ru)

\ This is free software; you can redistribute it and/or
\ modify it under the terms of the GNU General Public License
\ as published by the Free Software Foundation; either version 2
\ of the License, or (at your option) any later version.

\ This program is distributed in the hope that it will be useful,
\ but WITHOUT ANY WARRANTY; without even the implied warranty of
\ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
\ GNU General Public License for more details.

\ You should have received a copy of the GNU General Public License
\ along with this program; if not, write to the Free Software
\ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

uses Files.DBF.struct
uses TTY.out
uses Strings.tokens



11 CONSTANT MaxFieldNameLen



: DBFGetFieldName	( aname n -- addr u )  
                        \  !!! n >= 0 !!!
			
	DBFSubRecord %size * swap SubRecords @ + MaxFieldNameLen
	0 rot rot CutAfterChar
	;
	
: DBFGetFieldType	( aname n -- char )
	DBFSubRecord %size * DataType swap SubRecords @ + c@
	;

: DBFGetFieldOff	( aname n -- n )
	DBFSubRecord %size * FieldOff swap SubRecords @ + @
	;

: DBFGetFieldLen	( aname n -- n )
	DBFSubRecord %size * FieldLen swap SubRecords @ + @
	;

: DBFPrintFields	( aname -- )
	DUP
	DBFGetNumberOfFields 0 
	DO
	   DUP I 2DUP 2DUP 2DUP
	   DBFGetFieldName TYPE
	   DBFGetFieldType ." [" EMIT ." ] "
	   DBFGetFieldOff  ." @" .
	   DBFGetFieldLen  ." :" .
	   .TAB 
	LOOP
	DROP
	;

: DBFFindField		{ aname addr u -- n -1 | 0 }
	FALSE aname DBFGetNumberOfFields 0
	DO
		aname I DBFGetFieldName addr u COMPARE
		0= IF
			DROP I TRUE LEAVE			
		THEN
	LOOP
	;
	
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