You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
242 lines
7.2 KiB
242 lines
7.2 KiB
/*
|
|
kmime_codecs.cpp
|
|
|
|
This file is part of KMime, the KDE internet mail/usenet news message library.
|
|
Copyright (c) 2001-2002 Marc Mutz <mutz@kde.org>
|
|
|
|
KMime is free software; you can redistribute it and/or modify it
|
|
under the terms of the GNU General Public License, version 2, as
|
|
published by the Free Software Foundation.
|
|
|
|
KMime is distributed in the hope that it will be useful, but
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this library; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
|
|
In addition, as a special exception, the copyright holders give
|
|
permission to link the code of this library with any edition of
|
|
the TQt library by Trolltech AS, Norway (or with modified versions
|
|
of TQt that use the same license as TQt), and distribute linked
|
|
combinations including the two. You must obey the GNU General
|
|
Public License in all respects for all of the code used other than
|
|
TQt. If you modify this file, you may extend this exception to
|
|
your version of the file, but you are not obligated to do so. If
|
|
you do not wish to do so, delete this exception statement from
|
|
your version.
|
|
*/
|
|
|
|
#include "kmime_codecs.h"
|
|
#include "kmime_util.h"
|
|
|
|
#include "kmime_codec_base64.h"
|
|
#include "kmime_codec_qp.h"
|
|
#include "kmime_codec_uuencode.h"
|
|
#include "kmime_codec_identity.h"
|
|
|
|
#include <kdebug.h>
|
|
|
|
#include <tqcstring.h>
|
|
#include <kstaticdeleter.h>
|
|
|
|
#include <cassert>
|
|
#include <cstring>
|
|
|
|
using namespace KMime;
|
|
|
|
namespace KMime {
|
|
|
|
// global list of KMime::Codec's
|
|
TQAsciiDict<Codec>* Codec::all = 0;
|
|
static KStaticDeleter<TQAsciiDict<Codec> > sdAll;
|
|
#if defined(TQT_THREAD_SUPPORT)
|
|
TQMutex* Codec::dictLock = 0;
|
|
static KStaticDeleter<TQMutex> sdDictLock;
|
|
#endif
|
|
|
|
void Codec::fillDictionary() {
|
|
|
|
all->setAutoDelete(true);
|
|
|
|
//all->insert( "7bit", new SevenBitCodec() );
|
|
//all->insert( "8bit", new EightBitCodec() );
|
|
all->insert( "base64", new Base64Codec() );
|
|
all->insert( "quoted-printable", new QuotedPrintableCodec() );
|
|
all->insert( "b", new Rfc2047BEncodingCodec() );
|
|
all->insert( "q", new Rfc2047TQEncodingCodec() );
|
|
all->insert( "x-kmime-rfc2231", new Rfc2231EncodingCodec() );
|
|
all->insert( "x-uuencode", new UUCodec() );
|
|
//all->insert( "binary", new BinaryCodec() );
|
|
|
|
}
|
|
|
|
Codec * Codec::codecForName( const char * name ) {
|
|
#if defined(TQT_THREAD_SUPPORT)
|
|
if ( !dictLock )
|
|
sdDictLock.setObject( dictLock, new TQMutex );
|
|
dictLock->lock(); // protect "all"
|
|
#endif
|
|
if ( !all ) {
|
|
sdAll.setObject( all, new TQAsciiDict<Codec>( 11, false /* case-insensitive */) );
|
|
fillDictionary();
|
|
}
|
|
Codec * codec = (*all)[ name ];
|
|
#if defined(TQT_THREAD_SUPPORT)
|
|
dictLock->unlock();
|
|
#endif
|
|
|
|
if ( !codec )
|
|
kdDebug() << "Unknown codec \"" << name << "\" requested!" << endl;
|
|
|
|
return codec;
|
|
}
|
|
|
|
Codec * Codec::codecForName( const TQCString & name ) {
|
|
return codecForName( name.data() );
|
|
}
|
|
|
|
bool Codec::encode( const char* & scursor, const char * const send,
|
|
char* & dcursor, const char * const dend,
|
|
bool withCRLF ) const
|
|
{
|
|
// get an encoder:
|
|
Encoder * enc = makeEncoder( withCRLF );
|
|
assert( enc );
|
|
|
|
// encode and check for output buffer overflow:
|
|
while ( !enc->encode( scursor, send, dcursor, dend ) )
|
|
if ( dcursor == dend ) {
|
|
delete enc;
|
|
return false; // not enough space in output buffer
|
|
}
|
|
|
|
// finish and check for output buffer overflow:
|
|
while ( !enc->finish( dcursor, dend ) )
|
|
if ( dcursor == dend ) {
|
|
delete enc;
|
|
return false; // not enough space in output buffer
|
|
}
|
|
|
|
// cleanup and return:
|
|
delete enc;
|
|
return true; // successfully encoded.
|
|
}
|
|
|
|
TQByteArray Codec::encode( const TQByteArray & src, bool withCRLF ) const
|
|
{
|
|
// allocate buffer for the worst case:
|
|
TQByteArray result( maxEncodedSizeFor( src.size(), withCRLF ) );
|
|
|
|
// set up iterators:
|
|
TQByteArray::ConstIterator iit = src.begin();
|
|
TQByteArray::ConstIterator iend = src.end();
|
|
TQByteArray::Iterator oit = result.begin();
|
|
TQByteArray::ConstIterator oend = result.end();
|
|
|
|
// encode
|
|
if ( !encode( iit, iend, oit, oend, withCRLF ) )
|
|
kdFatal() << name() << " codec lies about it's mEncodedSizeFor()"
|
|
<< endl;
|
|
|
|
// shrink result to actual size:
|
|
result.truncate( oit - result.begin() );
|
|
|
|
return result;
|
|
}
|
|
|
|
TQCString Codec::encodeToTQCString( const TQByteArray & src, bool withCRLF ) const
|
|
{
|
|
// allocate buffer for the worst case (remember to add one for the trailing NUL)
|
|
TQCString result( maxEncodedSizeFor( src.size(), withCRLF ) + 1 );
|
|
|
|
// set up iterators:
|
|
TQByteArray::ConstIterator iit = src.begin();
|
|
TQByteArray::ConstIterator iend = src.end();
|
|
TQByteArray::Iterator oit = result.begin();
|
|
TQByteArray::ConstIterator oend = result.end() - 1;
|
|
|
|
// encode
|
|
if ( !encode( iit, iend, oit, oend, withCRLF ) )
|
|
kdFatal() << name() << " codec lies about it's mEncodedSizeFor()"
|
|
<< endl;
|
|
|
|
// shrink result to actual size:
|
|
result.truncate( oit - result.begin() );
|
|
|
|
return result;
|
|
}
|
|
|
|
TQByteArray Codec::decode( const TQByteArray & src, bool withCRLF ) const
|
|
{
|
|
// allocate buffer for the worst case:
|
|
TQByteArray result( maxDecodedSizeFor( src.size(), withCRLF ) );
|
|
|
|
// set up iterators:
|
|
TQByteArray::ConstIterator iit = src.begin();
|
|
TQByteArray::ConstIterator iend = src.end();
|
|
TQByteArray::Iterator oit = result.begin();
|
|
TQByteArray::ConstIterator oend = result.end();
|
|
|
|
// decode
|
|
if ( !decode( iit, iend, oit, oend, withCRLF ) )
|
|
kdFatal() << name() << " codec lies about it's maxDecodedSizeFor()"
|
|
<< endl;
|
|
|
|
// shrink result to actual size:
|
|
result.truncate( oit - result.begin() );
|
|
|
|
return result;
|
|
}
|
|
|
|
bool Codec::decode( const char* & scursor, const char * const send,
|
|
char* & dcursor, const char * const dend,
|
|
bool withCRLF ) const
|
|
{
|
|
// get a decoder:
|
|
Decoder * dec = makeDecoder( withCRLF );
|
|
assert( dec );
|
|
|
|
// decode and check for output buffer overflow:
|
|
while ( !dec->decode( scursor, send, dcursor, dend ) )
|
|
if ( dcursor == dend ) {
|
|
delete dec;
|
|
return false; // not enough space in output buffer
|
|
}
|
|
|
|
// finish and check for output buffer overflow:
|
|
while ( !dec->finish( dcursor, dend ) )
|
|
if ( dcursor == dend ) {
|
|
delete dec;
|
|
return false; // not enough space in output buffer
|
|
}
|
|
|
|
// cleanup and return:
|
|
delete dec;
|
|
return true; // successfully encoded.
|
|
}
|
|
|
|
// write as much as possible off the output buffer. Return true if
|
|
// flushing was complete, false if some chars could not be flushed.
|
|
bool Encoder::flushOutputBuffer( char* & dcursor, const char * const dend ) {
|
|
int i;
|
|
// copy output buffer to output stream:
|
|
for ( i = 0 ; dcursor != dend && i < mOutputBufferCursor ; ++i )
|
|
*dcursor++ = mOutputBuffer[i];
|
|
|
|
// calculate the number of missing chars:
|
|
int numCharsLeft = mOutputBufferCursor - i;
|
|
// push the remaining chars to the begin of the buffer:
|
|
if ( numCharsLeft )
|
|
tqmemmove( mOutputBuffer, mOutputBuffer + i, numCharsLeft );
|
|
// adjust cursor:
|
|
mOutputBufferCursor = numCharsLeft;
|
|
|
|
return !numCharsLeft;
|
|
}
|
|
|
|
|
|
} // namespace KMime
|