зеркало из https://github.com/mozilla/gecko-dev.git
83 строки
2.5 KiB
C++
83 строки
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#include "nsUnicodeToUEscape.h"
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#include "nsUCvLatinSupport.h"
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#include <string.h>
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char hexarray[]="0123456789ABCDEF";
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NS_IMETHODIMP nsUnicodeToUEscape::Convert(const PRUnichar * aSrc, PRInt32 * aSrcLength,
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char * aDest, PRInt32 * aDestLength)
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{
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const PRUnichar *src = aSrc;
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const PRUnichar *srcEnd = aSrc + *aSrcLength;
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char * dest = aDest;
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const char * destEnd = aDest + *aDestLength;
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while(( src < srcEnd) && (dest<destEnd))
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{
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if(0x0000 == ( 0xFF80 & (*src)) )
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{
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if( PRUnichar('\\') == *src)
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{
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if(( PRUnichar('n') == *(1+src))||
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( PRUnichar('r') == *(1+src))||
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( PRUnichar('t') == *(1+src)))
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{
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*dest++ = (char) *src;
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} else {
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if((dest +2 ) >= destEnd)
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goto error;
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*dest++ = (char) '\\';
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*dest++ = (char) '\\';
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}
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} else {
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*dest++ = (char) *src;
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}
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} else {
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if((dest +6 ) >= destEnd)
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goto error;
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*dest++ = (char) '\\';
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*dest++ = (char) 'u';
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*dest++ = (char) hexarray[0x0f & (*src >> 12)];
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*dest++ = (char) hexarray[0x0f & (*src >> 8)];
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*dest++ = (char) hexarray[0x0f & (*src >> 4)];
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*dest++ = (char) hexarray[0x0f & (*src)];
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}
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src++;
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}
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*aSrcLength = src - aSrc;
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*aDestLength = dest - aDest;
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return NS_OK;
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error:
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*aSrcLength = src - aSrc;
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*aDestLength = dest - aDest;
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return NS_OK_UDEC_MOREOUTPUT;
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}
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nsresult NEW_UnicodeToUEscape(nsISupports **aResult)
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{
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*aResult = (nsIUnicodeEncoder*)new nsUnicodeToUEscape();
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return (NULL == *aResult) ? NS_ERROR_OUT_OF_MEMORY : NS_OK;
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}
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