stringtab.def

<B>Digital的Unix操作系统VAX 4.2源码</B>

(*#@(#)stringtab.def	4.1	Ultrix	7/17/90 *)
(****************************************************************************
 *									    *
 *  Copyright (c) 1984 by						    *
 *  DIGITAL EQUIPMENT CORPORATION, Maynard, Massachusetts.		    *
 *  All rights reserved.						    *
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 *  transferred.							    *
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 *  The information in this software is  subject to change without notice   *
 *  and  should  not  be  construed as  a commitment by DIGITAL EQUIPMENT   *
 *  CORPORATION.							    *
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$Header: stringtab.def,v 1.3 84/05/19 11:34:51 powell Exp $
 ****************************************************************************)
definition module stringtab;
from io import file;
export qualified String, InitStringTable, NewString, AddChar, AddText,
	AddString, CopyString, WriteString;
(* string table stuff *)
const
    STRINGBLOCKSIZE = 10000;
    MAXSTRINGSIZE = 1000;
    STRINGHASHSIZE = 1357;

type
    StringIndex = [0..STRINGBLOCKSIZE];
    StringLength = [0..MAXSTRINGSIZE];
    StringBlock = pointer to StringBlockRec;
    StringBlockRec = record;
	next : StringBlock;
	s : array StringIndex of char;
    end;
    StringEntry = pointer to StringEntryRec;
    StringEntryRec = record
	block : StringBlock;
	index : StringIndex;
	length : StringLength;
	hash : cardinal;		(* hash value for quick comparisons *)
	next : StringEntry;
    end;
    String = StringEntry;

procedure InitStringTable();

procedure NewString() : String;

procedure AddChar(c : char);

procedure GetChar(s : String; charNum : StringLength) : char;

procedure AddText(s : array of char);

procedure AddString(str : String);

procedure CopyString(str : String; var arr : array of char);

procedure WriteString(f : file; s : String);

procedure WriteStringConst(f : file; s : String);

procedure DumpStringTab();

procedure EqualAnyCase(a,b : String) : boolean;

end stringtab.