зеркало из https://github.com/mozilla/pjs.git
238 строки
6.7 KiB
C++
238 строки
6.7 KiB
C++
/* -*- Mode: C++; tab-width: 3; 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 Mozilla 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/MPL/
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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 the Mozilla browser.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications, Inc. Portions created by Netscape are
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* Copyright (C) 1999, Mozilla. All Rights Reserved.
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*
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* Contributor(s):
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* Conrad Carlen <ccarlen@netscape.com>
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*/
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#include "UMacUnicode.h"
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#include "nsString.h"
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#include "nsIUnicodeEncoder.h"
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#include "nsIUnicodeDecoder.h"
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#include "nsIServiceManager.h"
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#include "nsICharsetConverterManager.h"
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CPlatformUCSConversion *CPlatformUCSConversion::mgInstance = nsnull;
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CPlatformUCSConversion::CPlatformUCSConversion() :
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mCharsetSel(kPlatformCharsetSel_FileName)
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{
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mEncoder = nsnull;
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mDecoder = nsnull;
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}
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CPlatformUCSConversion*
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CPlatformUCSConversion::GetInstance()
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{
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if (!mgInstance)
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mgInstance = new CPlatformUCSConversion;
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return mgInstance;
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}
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NS_IMETHODIMP
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CPlatformUCSConversion::SetCharsetSelector(nsPlatformCharsetSel aSel)
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{
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if (mCharsetSel != aSel) {
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mCharsetSel = aSel;
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mPlatformCharset.Truncate(0);
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mEncoder = nsnull;
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mDecoder = nsnull;
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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CPlatformUCSConversion::PreparePlatformCharset()
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{
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nsresult res = NS_OK;
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if (mPlatformCharset.Length() == 0)
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{
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nsCOMPtr<nsIPlatformCharset> pcharset =
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do_GetService(NS_PLATFORMCHARSET_CONTRACTID, &res);
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if (!(NS_SUCCEEDED(res) && pcharset)) {
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NS_WARNING("cannot get platform charset");
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}
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if(NS_SUCCEEDED(res) && pcharset) {
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res = pcharset->GetCharset(mCharsetSel, mPlatformCharset);
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}
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}
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return res;
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}
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NS_IMETHODIMP
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CPlatformUCSConversion::PrepareEncoder()
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{
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nsresult res = NS_OK;
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if(! mEncoder)
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{
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res = PreparePlatformCharset();
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if(NS_SUCCEEDED(res)) {
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nsCOMPtr<nsICharsetConverterManager> ucmgr =
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do_GetService(NS_CHARSETCONVERTERMANAGER_CONTRACTID, &res);
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NS_ASSERTION((NS_SUCCEEDED(res) && ucmgr),
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"cannot get charset converter manager ");
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if(NS_SUCCEEDED(res) && ucmgr)
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res = ucmgr->GetUnicodeEncoder( &mPlatformCharset, getter_AddRefs(mEncoder));
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NS_ASSERTION((NS_SUCCEEDED(res) && mEncoder),
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"cannot find the unicode encoder");
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}
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}
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return res;
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}
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NS_IMETHODIMP
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CPlatformUCSConversion::PrepareDecoder()
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{
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nsresult res = NS_OK;
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if(! mDecoder)
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{
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res = PreparePlatformCharset();
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if(NS_SUCCEEDED(res)) {
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nsCOMPtr<nsICharsetConverterManager> ucmgr =
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do_GetService(NS_CHARSETCONVERTERMANAGER_CONTRACTID, &res);
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NS_ASSERTION((NS_SUCCEEDED(res) && ucmgr),
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"cannot get charset converter manager ");
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if(NS_SUCCEEDED(res) && ucmgr)
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res = ucmgr->GetUnicodeDecoder( &mPlatformCharset, getter_AddRefs(mDecoder));
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NS_ASSERTION((NS_SUCCEEDED(res) && mDecoder),
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"cannot find the unicode decoder");
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}
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}
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return res;
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}
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NS_IMETHODIMP
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CPlatformUCSConversion::UCSToPlatform(const nsAReadableString& aIn, nsAWritableCString& aOut)
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{
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nsresult res;
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aOut.Truncate(0);
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res = PrepareEncoder();
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if(NS_SUCCEEDED(res))
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{
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nsReadingIterator<PRUnichar> done_reading;
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aIn.EndReading(done_reading);
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// for each chunk of |aIn|...
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PRUint32 fragmentLength = 0;
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nsReadingIterator<PRUnichar> iter;
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for (aIn.BeginReading(iter); iter != done_reading && NS_SUCCEEDED(res); iter.advance(PRInt32(fragmentLength)))
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{
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fragmentLength = PRUint32(iter.size_forward());
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PRInt32 inLength = fragmentLength;
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PRInt32 outLength;
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res = mEncoder->GetMaxLength(iter.get(), fragmentLength, &outLength);
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if (NS_SUCCEEDED(res))
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{
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char *outBuf = (char*)nsMemory::Alloc(outLength);
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if (outBuf)
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{
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res = mEncoder->Convert(iter.get(), &inLength, outBuf, &outLength);
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if (NS_SUCCEEDED(res))
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aOut.Append(outBuf, outLength);
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nsMemory::Free(outBuf);
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}
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else
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res = NS_ERROR_OUT_OF_MEMORY;
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}
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}
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}
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return res;
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}
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NS_IMETHODIMP
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CPlatformUCSConversion::UCSToPlatform(const nsAReadableString& aIn, Str255& aOut)
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{
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nsresult res;
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nsCAutoString cStr;
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res = UCSToPlatform(aIn, cStr);
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if (NS_SUCCEEDED(res))
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{
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PRUint32 outLength = cStr.Length();
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if (outLength > 255)
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outLength = 255;
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memcpy(&aOut[1], cStr.get(), outLength);
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aOut[0] = outLength;
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}
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return res;
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}
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NS_IMETHODIMP
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CPlatformUCSConversion::PlatformToUCS(const nsAReadableCString& aIn, nsAWritableString& aOut)
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{
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nsresult res;
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aOut.Truncate(0);
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res = PrepareDecoder();
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if (NS_SUCCEEDED(res))
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{
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nsReadingIterator<char> done_reading;
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aIn.EndReading(done_reading);
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// for each chunk of |aIn|...
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PRUint32 fragmentLength = 0;
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nsReadingIterator<char> iter;
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for (aIn.BeginReading(iter); iter != done_reading && NS_SUCCEEDED(res); iter.advance(PRInt32(fragmentLength)))
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{
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fragmentLength = PRUint32(iter.size_forward());
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PRInt32 inLength = fragmentLength;
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PRInt32 outLength;
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res = mDecoder->GetMaxLength(iter.get(), inLength, &outLength);
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if (NS_SUCCEEDED(res))
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{
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PRUnichar *outBuf = (PRUnichar*)nsMemory::Alloc(outLength * sizeof(PRUnichar));
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if (outBuf)
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{
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res = mDecoder->Convert(iter.get(), &inLength, outBuf, &outLength);
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if(NS_SUCCEEDED(res))
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aOut.Append(outBuf, outLength);
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nsMemory::Free(outBuf);
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}
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else
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res = NS_ERROR_OUT_OF_MEMORY;
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}
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}
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}
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return res;
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}
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NS_IMETHODIMP
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CPlatformUCSConversion::PlatformToUCS(const Str255& aIn, nsAWritableString& aOut)
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{
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char charBuf[256];
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memcpy(charBuf, &aIn[1], aIn[0]);
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charBuf[aIn[0]] = '\0';
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return PlatformToUCS(nsDependentCString(charBuf, aIn[0]), aOut);
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}
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