mirror of
https://github.com/mozilla/gecko-dev.git
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226 lines
7.6 KiB
C++
226 lines
7.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 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 Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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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) 1999
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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 the GNU General Public License Version 2 or later (the "GPL"), or
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* 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 NPL, 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 NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsMsgUtf7Utils.h"
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#include "nsCOMPtr.h"
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#include "nsICharsetConverterManager.h"
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#include "prmem.h"
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#include "nsReadableUtils.h"
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static NS_DEFINE_CID(kCharsetConverterManagerCID, NS_ICHARSETCONVERTERMANAGER_CID);
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// convert back and forth between imap utf7 and unicode.
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char*
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CreateUtf7ConvertedString(const char * aSourceString,
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PRBool aConvertToUtf7Imap)
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{
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nsresult res;
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char *dstPtr = nsnull;
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PRInt32 dstLength = 0;
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char *convertedString = NULL;
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nsCOMPtr<nsICharsetConverterManager> ccm =
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do_GetService(kCharsetConverterManagerCID, &res);
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if(NS_SUCCEEDED(res) && (nsnull != ccm))
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{
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nsString aCharset; aCharset.AssignWithConversion("x-imap4-modified-utf7");
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PRUnichar *unichars = nsnull;
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PRInt32 unicharLength;
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if (!aConvertToUtf7Imap)
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{
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// convert utf7 to unicode
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nsIUnicodeDecoder* decoder = nsnull;
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res = ccm->GetUnicodeDecoder(&aCharset, &decoder);
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if(NS_SUCCEEDED(res) && (nsnull != decoder))
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{
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PRInt32 srcLen = PL_strlen(aSourceString);
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res = decoder->GetMaxLength(aSourceString, srcLen, &unicharLength);
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// temporary buffer to hold unicode string
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unichars = new PRUnichar[unicharLength + 1];
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if (unichars == nsnull)
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{
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res = NS_ERROR_OUT_OF_MEMORY;
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}
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else
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{
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res = decoder->Convert(aSourceString, &srcLen, unichars, &unicharLength);
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unichars[unicharLength] = 0;
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}
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NS_IF_RELEASE(decoder);
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// convert the unicode to 8 bit ascii.
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nsString unicodeStr(unichars);
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convertedString = (char *) PR_Malloc(unicharLength + 1);
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if (convertedString)
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unicodeStr.ToCString(convertedString, unicharLength + 1, 0);
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}
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}
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else
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{
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// convert from 8 bit ascii string to modified utf7
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nsString unicodeStr; unicodeStr.AssignWithConversion(aSourceString);
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nsIUnicodeEncoder* encoder = nsnull;
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aCharset.AssignWithConversion("x-imap4-modified-utf7");
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res = ccm->GetUnicodeEncoder(&aCharset, &encoder);
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if(NS_SUCCEEDED(res) && (nsnull != encoder))
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{
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res = encoder->GetMaxLength(unicodeStr.get(), unicodeStr.Length(), &dstLength);
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// allocale an output buffer
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dstPtr = (char *) PR_CALLOC(dstLength + 1);
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unicharLength = unicodeStr.Length();
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if (dstPtr == nsnull)
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{
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res = NS_ERROR_OUT_OF_MEMORY;
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}
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else
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{
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res = encoder->Convert(unicodeStr.get(), &unicharLength, dstPtr, &dstLength);
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dstPtr[dstLength] = 0;
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}
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}
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NS_IF_RELEASE(encoder);
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nsString unicodeStr2; unicodeStr2.AssignWithConversion(dstPtr);
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convertedString = (char *) PR_Malloc(dstLength + 1);
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if (convertedString)
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unicodeStr2.ToCString(convertedString, dstLength + 1, 0);
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}
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delete [] unichars;
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}
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PR_FREEIF(dstPtr);
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return convertedString;
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}
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// convert back and forth between imap utf7 and unicode.
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char*
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CreateUtf7ConvertedStringFromUnicode(const PRUnichar * aSourceString)
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{
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nsresult res;
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char *dstPtr = nsnull;
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PRInt32 dstLength = 0;
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nsCOMPtr<nsICharsetConverterManager> ccm =
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do_GetService(kCharsetConverterManagerCID, &res);
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if(NS_SUCCEEDED(res) && (nsnull != ccm))
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{
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nsString aCharset; aCharset.AssignWithConversion("x-imap4-modified-utf7");
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PRInt32 unicharLength;
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// convert from 8 bit ascii string to modified utf7
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nsString unicodeStr(aSourceString);
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nsIUnicodeEncoder* encoder = nsnull;
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aCharset.AssignWithConversion("x-imap4-modified-utf7");
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res = ccm->GetUnicodeEncoder(&aCharset, &encoder);
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if(NS_SUCCEEDED(res) && (nsnull != encoder))
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{
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res = encoder->GetMaxLength(unicodeStr.get(), unicodeStr.Length(), &dstLength);
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// allocale an output buffer
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dstPtr = (char *) PR_CALLOC(dstLength + 1);
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unicharLength = unicodeStr.Length();
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if (dstPtr == nsnull)
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{
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res = NS_ERROR_OUT_OF_MEMORY;
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}
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else
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{
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// this should be enough of a finish buffer - utf7 isn't changing, and it'll always be '-'
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char finishBuffer[20];
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PRInt32 finishSize = sizeof(finishBuffer);
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res = encoder->Convert(unicodeStr.get(), &unicharLength, dstPtr, &dstLength);
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encoder->Finish(finishBuffer, &finishSize);
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finishBuffer[finishSize] = '\0';
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dstPtr[dstLength] = 0;
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strcat(dstPtr, finishBuffer);
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}
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}
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NS_IF_RELEASE(encoder);
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}
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return dstPtr;
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}
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nsresult CreateUnicodeStringFromUtf7(const char *aSourceString, PRUnichar **aUnicodeStr)
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{
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if (!aUnicodeStr)
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return NS_ERROR_NULL_POINTER;
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PRUnichar *convertedString = NULL;
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nsresult res;
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nsCOMPtr<nsICharsetConverterManager> ccm =
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do_GetService(kCharsetConverterManagerCID, &res);
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if(NS_SUCCEEDED(res) && (nsnull != ccm))
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{
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nsString aCharset; aCharset.AssignWithConversion("x-imap4-modified-utf7");
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PRUnichar *unichars = nsnull;
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PRInt32 unicharLength;
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// convert utf7 to unicode
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nsIUnicodeDecoder* decoder = nsnull;
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res = ccm->GetUnicodeDecoder(&aCharset, &decoder);
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if(NS_SUCCEEDED(res) && (nsnull != decoder))
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{
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PRInt32 srcLen = PL_strlen(aSourceString);
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res = decoder->GetMaxLength(aSourceString, srcLen, &unicharLength);
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// temporary buffer to hold unicode string
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unichars = new PRUnichar[unicharLength + 1];
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if (unichars == nsnull)
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{
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res = NS_ERROR_OUT_OF_MEMORY;
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}
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else
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{
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res = decoder->Convert(aSourceString, &srcLen, unichars, &unicharLength);
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unichars[unicharLength] = 0;
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}
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NS_IF_RELEASE(decoder);
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nsString unicodeStr(unichars);
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convertedString = ToNewUnicode(unicodeStr);
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delete [] unichars;
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}
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}
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*aUnicodeStr = convertedString;
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return (convertedString) ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
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}
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