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#include"mailsubject.h"
#include <kmime_codecs.h>
#include <kcharsets.h>
#include <kdebug.h>
#include <kglobal.h>
#include <klocale.h>
#include <tqdatetime.h>
#include <tqtextcodec.h>
#include <ctype.h>
KornMailSubject::KornMailSubject() : _id(0), _drop(0), _size(-1), _date(-1), _fullMessage(false)
{
}
KornMailSubject::KornMailSubject(KornMailId * id, KMailDrop *drop)
: _id(id), _drop( drop ), _size(-1), _date(-1), _fullMessage(false)
{
}
KornMailSubject::KornMailSubject(const KornMailSubject & src)
: _id(0), _drop(0), _size(-1), _date(-1)
{
operator=(src);
}
KornMailSubject & KornMailSubject::operator= (const KornMailSubject & src)
{
_size = src._size;
_date = src._date;
_subject = src._subject;
_sender = src._sender;
_header = src._header;
_fullMessage = src._fullMessage;
if (_id)
delete _id;
_id = 0;
if (src._id)
_id = src._id->clone();
_drop = src._drop;
return *this;
}
KornMailSubject::~KornMailSubject()
{
if (_id)
delete _id;
_id = 0;
}
TQString KornMailSubject::toString() const
{
TQDateTime date;
date.setTime_t(_date);
return TQString("KornMailSubject, Id: ") + (_id?_id->toString():TQString("NULL")) + ", " + i18n("Subject:") + " " + _subject
+ ", " + i18n("Sender:") + " " + _sender + ", " + i18n("Size:") + " " + TQString::number(_size)
+ ", " + i18n("Date:") + " " + date.toString(TQt::ISODate);
}
TQString KornMailSubject::decodeRFC2047String(const TQCString& aStr)
{
if ( aStr.isEmpty() )
return TQString();
const TQCString str = unfold( aStr );
if ( str.isEmpty() )
return TQString();
if ( str.tqfind( "=?" ) < 0 ) {
// No need to decode
return TQString(str);
}
TQString result;
TQCString LWSP_buffer;
bool lastWasEncodedWord = false;
for ( const char * pos = str.data() ; *pos ; ++pos ) {
// collect LWSP after encoded-words,
// because we might need to throw it out
// (when the next word is an encoded-word)
if ( lastWasEncodedWord && isBlank( pos[0] ) ) {
LWSP_buffer += pos[0];
continue;
}
// verbatimly copy normal text
if (pos[0]!='=' || pos[1]!='?') {
result += LWSP_buffer + pos[0];
LWSP_buffer = 0;
lastWasEncodedWord = false;
continue;
}
// found possible encoded-word
const char * const beg = pos;
{
// parse charset name
TQCString charset;
int i = 2;
pos += 2;
for ( ; *pos != '?' && ( *pos==' ' || ispunct(*pos) || isalnum(*pos) ); ++i, ++pos ) {
charset += *pos;
}
if ( *pos!='?' || i<4 )
goto invalid_encoded_word;
// get encoding and check delimiting question marks
const char encoding[2] = { pos[1], '\0' };
if (pos[2]!='?' || (encoding[0]!='Q' && encoding[0]!='q' &&
encoding[0]!='B' && encoding[0]!='b'))
goto invalid_encoded_word;
pos+=3; i+=3; // skip ?x?
const char * enc_start = pos;
// search for end of encoded part
while ( *pos && !(*pos=='?' && *(pos+1)=='=') ) {
i++;
pos++;
}
if ( !*pos )
goto invalid_encoded_word;
// valid encoding: decode and throw away separating LWSP
const KMime::Codec * c = KMime::Codec::codecForName( encoding );
kdFatal( !c ) << "No \"" << encoding << "\" codec!?" << endl;
TQByteArray in; in.setRawData( enc_start, pos - enc_start );
const TQByteArray enc = c->decode( in );
in.resetRawData( enc_start, pos - enc_start );
const TQTextCodec * codec = codecForName(charset);
if (!codec) return TQString();
result += codec->toUnicode(enc);
lastWasEncodedWord = true;
++pos; // eat '?' (for loop eats '=')
LWSP_buffer = 0;
}
continue;
invalid_encoded_word:
// invalid encoding, keep separating LWSP.
pos = beg;
if ( !LWSP_buffer.isNull() )
result += LWSP_buffer;
result += "=?";
lastWasEncodedWord = false;
++pos; // eat '?' (for loop eats '=')
LWSP_buffer = 0;
}
return result;
}
TQCString KornMailSubject::unfold( const TQCString & header )
{
if ( header.isEmpty() )
return TQCString();
TQCString result( header.size() ); // size() >= length()+1 and size() is O(1)
char * d = result.data();
for ( const char * s = header.data() ; *s ; )
if ( *s == '\r' ) { // ignore
++s;
continue;
} else if ( *s == '\n' ) { // unfold
while ( this->isBlank( *++s ) );
*d++ = ' ';
} else
*d++ = *s++;
*d++ = '\0';
result.truncate( d - result.data() );
return result;
}
//-----------------------------------------------------------------------------
const TQTextCodec* KornMailSubject::codecForName(const TQCString& _str)
{
if (_str.isEmpty()) return 0;
TQCString codec = _str;
return KGlobal::charsets()->codecForName(codec);
}
void KornMailSubject::decodeHeaders()
{
_subject = decodeRFC2047String( _subject.latin1() );
_sender = decodeRFC2047String( _sender.latin1() );
}
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