windows-server-2003/net/sfm/uam/macsource/macssp/macunicode.c

/*
 *  macunicode.cpp
 *  MSUAM
 *
 *  Created by mconrad on Fri Nov 16 2001.
 *  Copyright (c) 2001 Microsoft Corp. All rights reserved.
 *
 */

#include "macunicode.h"



// ---------------------------------------------------------------------------
//		� MacSspCStringToUnicode()
// ---------------------------------------------------------------------------
// Convert a c-string (null terminated mbcs) into a unicode string.
//

OSStatus
MacSspCStringToUnicode(
	IN	PCSTR				cString,
	OUT	UInt16*				unicodeLen,
	OUT	UniCharArrayPtr*	unicodeString
	)
{
	UnicodeMapping		unicodeMapping;
	TextToUnicodeInfo	textInfo;
	OSStatus			Status					= noErr;
	ByteCount			unicodeBufferSize		= CALC_UNICODE_CSTRING_LENGTH(cString);
	ByteCount			unicodeActualLen		= 0;
	UniCharArrayPtr		unicodeResult			= NULL;
    ByteCount			actualCharsConverted	= 0;
    OptionBits			controlFlags			= 0;
	
	//
	//Just in case the caller didn't initialize the return
	//parameters, we'll do it for them for safety.
	//
	*unicodeString 	= NULL;
	*unicodeLen		= 0;
	
	//
	//Create the test encoding that we'll use to convert Mac
	//characters to unicode chars.
	//
	unicodeMapping.unicodeEncoding 	= CreateTextEncoding(
											kTextEncodingUnicodeV2_0,
											kUnicodeNoSubset,
											kUnicode16BitFormat
											);
    
    //
    //Call our homegrown routine that will set the proper encoding
    //for the current script system.
    //
    Status = MacSspGetCurrentTextEncoding(&unicodeMapping.otherEncoding);
    
    if (NT_SUCCESS(Status))
    {
        unicodeMapping.mappingVersion	= kUnicodeUseLatestMapping;
        
        Status = CreateTextToUnicodeInfo(&unicodeMapping, &textInfo);
                
        if (NT_SUCCESS(Status))
        {
        	//
        	//Allocate memory for the unicode string. Note that the buffer
        	//should be big enough to hold the new unicode string.
        	//
            unicodeResult = (UniCharArrayPtr)NewPtrClear(unicodeBufferSize);
            
            if (unicodeResult != nil)
            {
	            //
	            //Set the control flags for this conversion.
	            //
	            //controlFlags = kUnicodeForceASCIIRangeMask;
	            
	            Status = ConvertFromTextToUnicode(
	                            textInfo,
	                            strlen(cString),
	                            cString,
	                            controlFlags,
	                            0,
	                            NULL,
	                            NULL,
	                            NULL,
	                            unicodeBufferSize,
	                            &actualCharsConverted,
	                            &unicodeActualLen,
	                            unicodeResult
	                            );
	                            
	            SspDebugPrint((DBUF, "ConvertFromTextToUnicode() returned = %d", Status));
	            
	            if (NT_SUCCESS(Status))
	            {
	                SspDebugPrintHex(unicodeResult, unicodeActualLen);
	                
	                *unicodeString 	= unicodeResult;
	                *unicodeLen		= unicodeActualLen;
	            }
	        }
	        else
	        {
	        	Status = memFullErr;
	        }
            
            //
            //Dispose of the opaque info structure used for the conversion.
            //
            DisposeTextToUnicodeInfo(&textInfo);
        }
	}
    
	return(Status);
}


// ---------------------------------------------------------------------------
//		� MacSspUnicodeToWindowsCString()
// ---------------------------------------------------------------------------
// Converts a unicode string to a single byte CString using the Windows ASCII
// mapping table.
//

OSStatus
MacSspUnicodeToWindowsCString(
	IN	UniCharArrayPtr		unicodeString,
	IN	UInt32				unicodeLen,
	IN	UInt32				cStringBufferLen,
	OUT	PCHAR				cString
	)
{
	OSStatus			Status	= noErr;
	UnicodeMapping		unicodeMapping;
	UnicodeToTextInfo	textInfo;
	ByteCount			inputRead 	= 0;
	ByteCount			outputLen 	= 0;
	OptionBits			options		= 0;
	
	unico