зеркало из https://github.com/mozilla/gecko-dev.git
134 строки
3.6 KiB
C++
134 строки
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape Public License
|
|
* Version 1.0 (the "License"); you may not use this file except in
|
|
* compliance with the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS"
|
|
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
|
|
* the License for the specific language governing rights and limitations
|
|
* under the License.
|
|
*
|
|
* The Original Code is Mozilla Communicator client code.
|
|
*
|
|
* The Initial Developer of the Original Code is Netscape Communications
|
|
* Corporation. Portions created by Netscape are Copyright (C) 1998
|
|
* Netscape Communications Corporation. All Rights Reserved.
|
|
*/
|
|
|
|
|
|
#include "nsUnicodeToUEscape.h"
|
|
#include "nsUCvLatinSupport.h"
|
|
#include <string.h>
|
|
|
|
// XXX should we inherited from nsEncoderSupprt ? We don't want the buffer stuff there
|
|
class nsUnicodeToUEscape : public nsEncoderSupport
|
|
{
|
|
public:
|
|
|
|
/**
|
|
* Class constructor.
|
|
*/
|
|
nsUnicodeToUEscape() {};
|
|
|
|
/**
|
|
* Static class constructor.
|
|
*/
|
|
static nsresult CreateInstance(nsISupports **aResult);
|
|
|
|
NS_IMETHOD FillInfo(PRUint32* aInfo)
|
|
{
|
|
memset(aInfo, 0xFF, (0x10000L >> 3));
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHOD Convert(const PRUnichar * aSrc, PRInt32 * aSrcLength,
|
|
char * aDest, PRInt32 * aDestLength);
|
|
NS_IMETHOD Finish(char * aDest, PRInt32 * aDestLength)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
NS_IMETHOD Reset()
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
protected:
|
|
|
|
//--------------------------------------------------------------------
|
|
// Subclassing of nsEncoderSupport class [declaration]
|
|
|
|
NS_IMETHOD GetMaxLength(const PRUnichar * aSrc, PRInt32 aSrcLength,
|
|
PRInt32 * aDestLength)
|
|
{
|
|
*aDestLength = 6*aSrcLength;
|
|
return NS_OK;
|
|
};
|
|
|
|
NS_IMETHOD ConvertNoBuffNoErr(const PRUnichar * aSrc, PRInt32 * aSrcLength,
|
|
char * aDest, PRInt32 * aDestLength)
|
|
{
|
|
NS_ASSERTION(PR_FALSE, "should never call this");
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
};
|
|
|
|
};
|
|
|
|
|
|
|
|
nsresult nsUnicodeToUEscape::CreateInstance(nsISupports ** aResult)
|
|
{
|
|
*aResult = (nsIUnicodeEncoder*) new nsUnicodeToUEscape();
|
|
return (*aResult == NULL)? NS_ERROR_OUT_OF_MEMORY : NS_OK;
|
|
}
|
|
|
|
char hexarray[]="0123456789ABCDEF";
|
|
NS_IMETHODIMP nsUnicodeToUEscape::Convert(const PRUnichar * aSrc, PRInt32 * aSrcLength,
|
|
char * aDest, PRInt32 * aDestLength)
|
|
{
|
|
const PRUnichar *src = aSrc;
|
|
const PRUnichar *srcEnd = aSrc + *aSrcLength;
|
|
char * dest = aDest;
|
|
const char * destEnd = aDest + *aDestLength;
|
|
|
|
while(( src < srcEnd) && (dest<destEnd))
|
|
{
|
|
if(0x0000 == ( 0xFF80 & (*src)) )
|
|
{
|
|
if( PRUnichar('\\') == *src)
|
|
{
|
|
if((dest +2 ) >= destEnd)
|
|
goto error;
|
|
*dest++ = (char) '\\';
|
|
*dest++ = (char) '\\';
|
|
} else {
|
|
*dest++ = (char) *src;
|
|
}
|
|
} else {
|
|
if((dest +6 ) >= destEnd)
|
|
goto error;
|
|
*dest++ = (char) '\\';
|
|
*dest++ = (char) 'u';
|
|
*dest++ = (char) hexarray[0x0f & (*src >> 12)];
|
|
*dest++ = (char) hexarray[0x0f & (*src >> 8)];
|
|
*dest++ = (char) hexarray[0x0f & (*src >> 4)];
|
|
*dest++ = (char) hexarray[0x0f & (*src)];
|
|
}
|
|
src++;
|
|
}
|
|
|
|
*aSrcLength = src - aSrc;
|
|
*aDestLength = dest - aDest;
|
|
return NS_OK;
|
|
error:
|
|
*aSrcLength = src - aSrc;
|
|
*aDestLength = dest - aDest;
|
|
return NS_OK_UDEC_MOREOUTPUT;
|
|
}
|
|
nsresult NEW_UnicodeToUEscape(nsISupports **aResult)
|
|
{
|
|
*aResult = (nsIUnicodeEncoder*)new nsUnicodeToUEscape();
|
|
return (NULL == *aResult) ? NS_ERROR_OUT_OF_MEMORY : NS_OK;
|
|
}
|