Source to bsd/hfs/hfscommon/headers/HFSUnicodeWrappers.h

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
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 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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/*
	File:		HFSUnicodeWrappers.h

	Contains:	IPI to Unicode routines used by File Manager.

	Version:	HFS Plus 1.0

	Written by:	Mark Day

	Copyright:	� 1996-1997 by Apple Computer, Inc., all rights reserved.

	File Ownership:

		DRI:				xxx put dri here xxx

		Other Contact:		xxx put other contact here xxx

		Technology:			xxx put technology here xxx

	Writers:

		(DSH)	Deric Horn
		(msd)	Mark Day
		(djb)	Don Brady

	Change History (most recent first):

	  <CS11>	11/16/97	djb		Change Unicode.h to UnicodeConverter.h.
	  <CS10>	 11/7/97	msd		Remove prototype for CompareUnicodeNames(). Add prototype for
									FastUnicodeCompare().
	   <CS9>	10/13/97	djb		Add encoding/index macros and add prototypes for new Get/Set
									encodding routines.
	   <CS8>	 9/15/97	djb		InitUnicodeConverter now takes a boolean.
	   <CS7>	 9/10/97	msd		Add prototype for InitializeEncodingContext.
	   <CS6>	 6/26/97	DSH		Include  "MockConverter" prototype for DFA usage.
	   <CS5>	 6/25/97	DSH		Removed Prototype definitions, and checked in Unicode.h and
									TextCommon.h from Julio Gonzales into InternalInterfaces.
	   <CS4>	 6/25/97	msd		Add prototypes for some new Unicode routines that haven't
									appeared in MasterInterfaces yet.
	   <CS3>	 6/18/97	djb		Add more ConversionContexts routines.
	   <CS2>	 6/13/97	djb		Switched to ConvertUnicodeToHFSName, ConvertHFSNameToUnicode, &
									CompareUnicodeNames.
	   <CS1>	 4/28/97	djb		first checked in
	  <HFS1>	12/12/96	msd		first checked in

*/

#include "../../hfs_macos_defs.h"
#include "../../hfs_format.h"

// Encoding vs. Index
//
// For runtime table lookups and for the volume encoding bitmap we
// need to map some encodings to keep them in a reasonable range.
//

enum {
	kIndexMacUkrainian	= 48,		// MacUkrainian encoding is 152
	kIndexMacFarsi		= 49		// MacFarsi encoding is 140
};

#define MapEncodingToIndex(e) \
	( (e) < 48 ? (e) : ( (e) == kTextEncodingMacUkrainian ? kIndexMacUkrainian : ( (e) == kTextEncodingMacFarsi ? kIndexMacFarsi : kTextEncodingMacRoman) ) )

#define MapIndexToEncoding(i) \
	( (i) == kIndexMacFarsi ? kTextEncodingMacFarsi : ( (i) == kIndexMacUkrainian ? kTextEncodingMacUkrainian : (i) ) )

#define ValidMacEncoding(e)	\
	( ((e) < 39)  ||  ((e) == kTextEncodingMacFarsi)  ||  ((e) == kTextEncodingMacUkrainian) )



extern OSErr ConvertUTF8ToUnicode ( ByteCount srcLen,
								    const unsigned char* srcStr,
									ByteCount maxDstLen,
					 				ByteCount *actualDstLen,
									UniCharArrayPtr dstStr );

extern OSErr ConvertUnicodeToUTF8 ( ByteCount srcLen,
									ConstUniCharArrayPtr srcStr,
									ByteCount maxDstLen,
					 				ByteCount *actualDstLen,
									unsigned char* dstStr );

/*
	This routine compares two Unicode names based on an ordering defined by the HFS Plus B-tree.
	This ordering must stay fixed for all time.
	
	Output:
		-n		name1 < name2	(i.e. name 1 sorts before name 2)
		 0		name1 = name2
		+n		name1 > name2
	
	NOTE: You should not depend on the magnitude of the result, just its sign.  That is, when name1 < name2, then any
	negative number may be returned.
*/

extern SInt32 FastUnicodeCompare(register ConstUniCharArrayPtr str1, register ItemCount length1,
								 register ConstUniCharArrayPtr str2, register ItemCount length2);


extern SInt32 FastRelString( ConstStr255Param str1, ConstStr255Param str2 );


extern HFSCatalogNodeID GetEmbeddedFileID( ConstStr31Param filename, UInt32 length, UInt32 *prefixLength );