mirror of
https://github.com/rn10950/RetroZilla.git
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388 lines
11 KiB
C++
388 lines
11 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2003
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifdef MOZ_USE_NATIVE_UCONV
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#include "nsString.h"
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#include "nsIGenericFactory.h"
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#include "nsINativeUConvService.h"
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#include "nsIUnicodeDecoder.h"
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#include "nsIUnicodeEncoder.h"
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#include "nsICharRepresentable.h"
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#include "nsNativeUConvService.h"
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#include <nl_types.h> // CODESET
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#include <langinfo.h> // nl_langinfo
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#include <iconv.h> // iconv_open, iconv, iconv_close
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#include <errno.h>
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class IConvAdaptor : public nsIUnicodeDecoder,
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public nsIUnicodeEncoder,
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public nsICharRepresentable
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{
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public:
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IConvAdaptor();
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virtual ~IConvAdaptor();
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nsresult Init(const char* from, const char* to);
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NS_DECL_ISUPPORTS
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// Decoder methods:
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NS_IMETHOD Convert(const char * aSrc,
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PRInt32 * aSrcLength,
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PRUnichar * aDest,
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PRInt32 * aDestLength);
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NS_IMETHOD GetMaxLength(const char * aSrc,
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PRInt32 aSrcLength,
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PRInt32 * aDestLength);
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NS_IMETHOD Reset();
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// Encoder methods:
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NS_IMETHOD Convert(const PRUnichar * aSrc,
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PRInt32 * aSrcLength,
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char * aDest,
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PRInt32 * aDestLength);
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NS_IMETHOD Finish(char * aDest, PRInt32 * aDestLength);
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NS_IMETHOD GetMaxLength(const PRUnichar * aSrc,
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PRInt32 aSrcLength,
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PRInt32 * aDestLength);
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// defined by the Decoder: NS_IMETHOD Reset();
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NS_IMETHOD SetOutputErrorBehavior(PRInt32 aBehavior,
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nsIUnicharEncoder * aEncoder,
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PRUnichar aChar);
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NS_IMETHOD FillInfo(PRUint32* aInfo);
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private:
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nsresult ConvertInternal(void * aSrc,
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PRInt32 * aSrcLength,
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PRInt32 aSrcCharSize,
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void * aDest,
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PRInt32 * aDestLength,
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PRInt32 aDestCharSize);
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iconv_t mConverter;
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PRBool mReplaceOnError;
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PRUnichar mReplaceChar;
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#ifdef DEBUG
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nsCString mFrom, mTo;
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#endif
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};
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NS_IMPL_ISUPPORTS3(IConvAdaptor,
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nsIUnicodeEncoder,
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nsIUnicodeDecoder,
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nsICharRepresentable)
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IConvAdaptor::IConvAdaptor()
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{
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mConverter = 0;
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mReplaceOnError = PR_FALSE;
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}
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IConvAdaptor::~IConvAdaptor()
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{
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if (mConverter)
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iconv_close(mConverter);
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}
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nsresult
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IConvAdaptor::Init(const char* from, const char* to)
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{
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#ifdef DEBUG
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mFrom = from;
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mTo = to;
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#endif
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mConverter = iconv_open(to, from);
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if (mConverter == (iconv_t) -1 )
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{
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#ifdef DEBUG
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printf(" * IConvAdaptor - FAILED Initing: %s ==> %s\n", from, to);
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#endif
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mConverter = nsnull;
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return NS_ERROR_FAILURE;
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}
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return NS_OK;
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}
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// From some charset to ucs2
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nsresult
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IConvAdaptor::Convert(const char * aSrc,
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PRInt32 * aSrcLength,
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PRUnichar * aDest,
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PRInt32 * aDestLength)
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{
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return ConvertInternal( (void*) aSrc,
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aSrcLength,
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1,
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(void*) aDest,
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aDestLength,
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2);
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}
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nsresult
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IConvAdaptor::GetMaxLength(const char * aSrc,
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PRInt32 aSrcLength,
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PRInt32 * aDestLength)
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{
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if (!mConverter)
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return NS_ERROR_UENC_NOMAPPING;
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*aDestLength = aSrcLength*4; // sick
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#ifdef DEBUG
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printf(" * IConvAdaptor - - GetMaxLength %d ( %s -> %s )\n", *aDestLength, mFrom.get(), mTo.get());
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#endif
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return NS_OK;
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}
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nsresult
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IConvAdaptor::Reset()
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{
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const char *zero_char_in_ptr = NULL;
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char *zero_char_out_ptr = NULL;
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size_t zero_size_in = 0,
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zero_size_out = 0;
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iconv(mConverter,
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(char **)&zero_char_in_ptr,
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&zero_size_in,
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&zero_char_out_ptr,
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&zero_size_out);
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#ifdef DEBUG
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printf(" * IConvAdaptor - - Reset\n");
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#endif
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return NS_OK;
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}
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// convert unicode data into some charset.
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nsresult
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IConvAdaptor::Convert(const PRUnichar * aSrc,
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PRInt32 * aSrcLength,
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char * aDest,
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PRInt32 * aDestLength)
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{
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return ConvertInternal( (void*) aSrc,
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aSrcLength,
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2,
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(void*) aDest,
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aDestLength,
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1);
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}
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nsresult
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IConvAdaptor::Finish(char * aDest, PRInt32 * aDestLength)
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{
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*aDestLength = 0;
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return NS_OK;
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}
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nsresult
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IConvAdaptor::GetMaxLength(const PRUnichar * aSrc,
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PRInt32 aSrcLength,
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PRInt32 * aDestLength)
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{
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if (!mConverter)
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return NS_ERROR_UENC_NOMAPPING;
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*aDestLength = aSrcLength*4; // sick
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return NS_OK;
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}
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nsresult
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IConvAdaptor::SetOutputErrorBehavior(PRInt32 aBehavior,
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nsIUnicharEncoder * aEncoder,
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PRUnichar aChar)
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{
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if (aBehavior != kOnError_Replace) {
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mReplaceOnError = PR_TRUE;
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mReplaceChar = aChar;
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return NS_OK;
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}
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NS_WARNING("Uconv Error Behavior not support");
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return NS_ERROR_FAILURE;
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}
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nsresult
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IConvAdaptor::FillInfo(PRUint32* aInfo)
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{
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#ifdef DEBUG
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printf(" * IConvAdaptor - FillInfo called\n");
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#endif
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*aInfo = 0;
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return NS_OK;
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}
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nsresult
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IConvAdaptor::ConvertInternal(void * aSrc,
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PRInt32 * aSrcLength,
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PRInt32 aSrcCharSize,
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void * aDest,
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PRInt32 * aDestLength,
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PRInt32 aDestCharSize)
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{
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if (!mConverter) {
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NS_WARNING("Converter Not Initialize");
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return NS_ERROR_NOT_INITIALIZED;
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}
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size_t res = 0;
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size_t inLeft = (size_t) *aSrcLength * aSrcCharSize;
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size_t outLeft = (size_t) *aDestLength * aDestCharSize;
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size_t outputAvail = outLeft;
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while (true){
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res = iconv(mConverter,
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(char**)&aSrc,
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&inLeft,
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(char**)&aDest,
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&outLeft);
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if (res == (size_t) -1) {
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// on some platforms (e.g., linux) iconv will fail with
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// E2BIG if it cannot convert _all_ of its input. it'll
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// still adjust all of the in/out params correctly, so we
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// can ignore this error. the assumption is that we will
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// be called again to complete the conversion.
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if ((errno == E2BIG) && (outLeft < outputAvail)) {
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res = 0;
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break;
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}
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if (errno == EILSEQ) {
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if (mReplaceOnError) {
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if (aDestCharSize == 1) {
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(*(char*)aDest) = (char)mReplaceChar;
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aDest = (char*)aDest + sizeof(char);
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}
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else
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{
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(*(PRUnichar*)aDest) = (PRUnichar)mReplaceChar;
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aDest = (PRUnichar*)aDest + sizeof(PRUnichar);
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}
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inLeft -= aSrcCharSize;
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outLeft -= aDestCharSize;
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#ifdef DEBUG
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printf(" * IConvAdaptor - replacing char in output ( %s -> %s )\n",
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mFrom.get(), mTo.get());
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#endif
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res = 0;
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}
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}
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if (res == -1) {
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#ifdef DEBUG
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printf(" * IConvAdaptor - Bad input ( %s -> %s )\n", mFrom.get(), mTo.get());
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#endif
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return NS_ERROR_UENC_NOMAPPING;
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}
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}
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if (inLeft <= 0 || outLeft <= 0 || res == -1)
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break;
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}
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if (res != (size_t) -1) {
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// xp_iconv deals with how much is remaining in a given buffer
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// but what uconv wants how much we read/written already. So
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// we fix it up here.
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*aSrcLength -= (inLeft / aSrcCharSize);
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*aDestLength -= (outLeft / aDestCharSize);
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return NS_OK;
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}
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#ifdef DEBUG
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printf(" * IConvAdaptor - - xp_iconv error( %s -> %s )\n", mFrom.get(), mTo.get());
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#endif
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Reset();
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return NS_ERROR_UENC_NOMAPPING;
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}
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NS_IMPL_ISUPPORTS1(NativeUConvService, nsINativeUConvService)
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NS_IMETHODIMP
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NativeUConvService::GetNativeConverter(const char* from,
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const char* to,
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nsISupports** aResult)
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{
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*aResult = nsnull;
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IConvAdaptor* ucl = new IConvAdaptor();
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if (!ucl)
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return NS_ERROR_OUT_OF_MEMORY;
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nsresult rv = ucl->Init(from, to);
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if (NS_SUCCEEDED(rv)) {
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NS_ADDREF(*aResult = (nsISupports*)(nsIUnicharEncoder*)ucl);
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}
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return rv;
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}
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#endif
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