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vcardparser.cpp
00001 /*
00002     This file is part of libkabc.
00003     Copyright (c) 2003 Tobias Koenig <tokoe@kde.org>
00004 
00005     This library is free software; you can redistribute it and/or
00006     modify it under the terms of the GNU Library General Public
00007     License as published by the Free Software Foundation; either
00008     version 2 of the License, or (at your option) any later version.
00009 
00010     This library is distributed in the hope that it will be useful,
00011     but WITHOUT ANY WARRANTY; without even the implied warranty of
00012     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013     Library General Public License for more details.
00014 
00015     You should have received a copy of the GNU Library General Public License
00016     along with this library; see the file COPYING.LIB.  If not, write to
00017     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00018     Boston, MA 02110-1301, USA.
00019 */
00020 
00021 #include "vcardparser.h"
00022 #include <kcodecs.h>
00023 #include <kdebug.h>
00024 #include <QtCore/QTextCodec>
00025 
00026 #define FOLD_WIDTH 75
00027 
00028 using namespace KABC;
00029 
00030 static void addEscapes( QByteArray &str )
00031 {
00032   str.replace( '\\', (char *)"\\\\" );
00033   str.replace( ',', (char *)"\\," );
00034   str.replace( '\r', (char *)"\\r" );
00035   str.replace( '\n', (char *)"\\n" );
00036 }
00037 
00038 static void removeEscapes( QByteArray &str )
00039 {
00040   str.replace( (char *)"\\n", "\n" );
00041   str.replace( (char *)"\\N", "\n" );
00042   str.replace( (char *)"\\r", "\r" );
00043   str.replace( (char *)"\\,", "," );
00044   str.replace( (char *)"\\\\", "\\" );
00045 }
00046 
00047 VCardParser::VCardParser()
00048 {
00049 }
00050 
00051 VCardParser::~VCardParser()
00052 {
00053 }
00054 
00055 VCard::List VCardParser::parseVCards( const QByteArray &text )
00056 {
00057   VCard currentVCard;
00058   VCard::List vCardList;
00059   QByteArray currentLine;
00060 
00061   QList<QByteArray> lines = text.split( '\n' );
00062 
00063   bool inVCard = false;
00064   QList<QByteArray>::Iterator it( lines.begin() );
00065   QList<QByteArray>::Iterator linesEnd( lines.end() );
00066   for ( ; it != linesEnd; ++it ) {
00067     // remove the trailing \r, left from \r\n
00068     if ( (*it).endsWith( '\r' ) ) {
00069         (*it).chop( 1 );
00070     }
00071 
00072     if ( (*it).startsWith( ' ' ) || (*it).startsWith( '\t' ) ) { //folded line => append to previous
00073       currentLine.append( (*it).mid( 1 ) );
00074       continue;
00075     } else {
00076       if ( (*it).trimmed().isEmpty() ) { // empty line
00077         continue;
00078       }
00079       if ( inVCard && !currentLine.isEmpty() ) { // now parse the line
00080         int colon = currentLine.indexOf( ':' );
00081         if ( colon == -1 ) { // invalid line
00082           currentLine = (*it);
00083           continue;
00084         }
00085 
00086         VCardLine vCardLine;
00087         const QByteArray key = currentLine.left( colon ).trimmed();
00088         QByteArray value = currentLine.mid( colon + 1 );
00089 
00090         QList<QByteArray> params = key.split( ';' );
00091 
00092         // check for group
00093         int groupPos = params[ 0 ].indexOf( '.' );
00094         if ( groupPos != -1 ) {
00095           vCardLine.setGroup( QString::fromLatin1( params[ 0 ].left( groupPos ) ) );
00096           vCardLine.setIdentifier( QString::fromLatin1( params[ 0 ].mid( groupPos + 1 ) ) );
00097         } else {
00098           vCardLine.setIdentifier( QString::fromLatin1( params[ 0 ] ) );
00099         }
00100 
00101         if ( params.count() > 1 ) { // find all parameters
00102           QList<QByteArray>::ConstIterator paramIt( params.constBegin() );
00103           for ( ++paramIt; paramIt != params.constEnd(); ++paramIt ) {
00104             QList<QByteArray> pair = (*paramIt).split( '=' );
00105             if ( pair.count() == 1 ) {
00106               // correct the fucking 2.1 'standard'
00107               if ( pair[ 0 ].toLower() == "quoted-printable" ) {
00108                 pair[ 0 ] = "encoding";
00109                 pair.append( "quoted-printable" );
00110               } else if ( pair[ 0 ].toLower() == "base64" ) {
00111                 pair[ 0 ] = "encoding";
00112                 pair.append( "base64" );
00113               } else {
00114                 pair.prepend( "type" );
00115               }
00116             }
00117             if ( pair[ 1 ].indexOf( ',' ) != -1 ) { // parameter in type=x,y,z format
00118               const QList<QByteArray> args = pair[ 1 ].split( ',' );
00119               QList<QByteArray>::ConstIterator argIt;
00120               for ( argIt = args.constBegin(); argIt != args.constEnd(); ++argIt ) {
00121                 vCardLine.addParameter( QString::fromLatin1( pair[ 0 ].toLower() ),
00122                                         QString::fromLatin1( *argIt ) );
00123               }
00124             } else {
00125               vCardLine.addParameter( QString::fromLatin1( pair[ 0 ].toLower() ),
00126                                       QString::fromLatin1( pair[ 1 ] ) );
00127             }
00128           }
00129         }
00130 
00131         removeEscapes( value );
00132 
00133         QByteArray output;
00134         bool wasBase64Encoded = false;
00135 
00136         if ( vCardLine.parameterList().contains( QLatin1String( "encoding" ) ) ) {
00137           const QString encoding = vCardLine.parameter( QLatin1String( "encoding" ) ).toLower();
00138 
00139           // have to decode the data
00140           if ( encoding == QLatin1String( "b" ) || encoding == QLatin1String( "base64" ) ) {
00141             output = QByteArray::fromBase64( value );
00142             wasBase64Encoded = true;
00143           }
00144           else if ( encoding == QLatin1String( "quoted-printable" ) ) {
00145             // join any qp-folded lines
00146             while ( value.endsWith( '=' ) && it != linesEnd ) {
00147               value.chop( 1 ); // remove the '='
00148               value.append( *it );
00149               ++it;
00150             }
00151             KCodecs::quotedPrintableDecode( value, output );
00152           } else if ( encoding == QLatin1String( "8bit" ) ) {
00153             output = value;
00154           } else {
00155             qDebug( "Unknown vcard encoding type!" );
00156           }
00157         } else {
00158           output = value;
00159         }
00160 
00161         if ( vCardLine.parameterList().contains( QLatin1String( "charset" ) ) ) {
00162           // have to convert the data
00163           QTextCodec *codec = QTextCodec::codecForName(
00164             vCardLine.parameter( QLatin1String( "charset" ) ).toLatin1() );
00165           if ( codec ) {
00166             vCardLine.setValue( codec->toUnicode( output ) );
00167           } else {
00168             vCardLine.setValue( QString::fromUtf8( output ) );
00169           }
00170         } else if ( wasBase64Encoded ) {
00171             vCardLine.setValue( output );
00172         } else {
00173             vCardLine.setValue( QString::fromUtf8( output ) );
00174         }
00175 
00176         currentVCard.addLine( vCardLine );
00177       }
00178 
00179       // we do not save the start and end tag as vcardline
00180       if ( (*it).toLower().startsWith( "begin:vcard" ) ) { //krazy:exclude=strings
00181         inVCard = true;
00182         currentLine.clear();
00183         currentVCard.clear(); // flush vcard
00184         continue;
00185       }
00186 
00187       if ( (*it).toLower().startsWith( "end:vcard" ) ) { //krazy:exclude=strings
00188         inVCard = false;
00189         vCardList.append( currentVCard );
00190         currentLine.clear();
00191         currentVCard.clear(); // flush vcard
00192         continue;
00193       }
00194 
00195       currentLine = (*it);
00196     }
00197   }
00198 
00199   return vCardList;
00200 }
00201 
00202 QByteArray VCardParser::createVCards( const VCard::List &list )
00203 {
00204   QByteArray text;
00205   QByteArray textLine;
00206   QString encodingType;
00207   QStringList idents;
00208   QStringList params;
00209   QStringList values;
00210   QStringList::ConstIterator identIt;
00211   QStringList::Iterator paramIt;
00212   QStringList::ConstIterator valueIt;
00213 
00214   VCardLine::List lines;
00215   VCardLine::List::ConstIterator lineIt;
00216   VCard::List::ConstIterator cardIt;
00217 
00218   bool hasEncoding;
00219 
00220   text.reserve( list.size() * 300 ); // reserve memory to be more efficient
00221 
00222   // iterate over the cards
00223   VCard::List::ConstIterator listEnd( list.end() );
00224   for ( cardIt = list.begin(); cardIt != listEnd; ++cardIt ) {
00225     text.append( "BEGIN:VCARD\r\n" );
00226 
00227     idents = (*cardIt).identifiers();
00228     for ( identIt = idents.constBegin(); identIt != idents.constEnd(); ++identIt ) {
00229       lines = (*cardIt).lines( (*identIt) );
00230 
00231       // iterate over the lines
00232       for ( lineIt = lines.constBegin(); lineIt != lines.constEnd(); ++lineIt ) {
00233         QVariant val = (*lineIt).value();
00234         if ( val.isValid() ) {
00235           if ( (*lineIt).hasGroup() ) {
00236             textLine = (*lineIt).group().toLatin1() + '.' + (*lineIt).identifier().toLatin1();
00237           } else {
00238             textLine = (*lineIt).identifier().toLatin1();
00239           }
00240 
00241           params = (*lineIt).parameterList();
00242           hasEncoding = false;
00243           if ( params.count() > 0 ) { // we have parameters
00244             for ( paramIt = params.begin(); paramIt != params.end(); ++paramIt ) {
00245               if ( (*paramIt) == QLatin1String( "encoding" ) ) {
00246                 hasEncoding = true;
00247                 encodingType = (*lineIt).parameter( QLatin1String( "encoding" ) ).toLower();
00248               }
00249 
00250               values = (*lineIt).parameters( *paramIt );
00251               for ( valueIt = values.constBegin(); valueIt != values.constEnd(); ++valueIt ) {
00252                 textLine.append( ';' + (*paramIt).toLatin1().toUpper() );
00253                 if ( !(*valueIt).isEmpty() ) {
00254                   textLine.append( '=' + (*valueIt).toLatin1() );
00255                 }
00256               }
00257             }
00258           }
00259 
00260           QByteArray input, output;
00261 
00262           // handle charset
00263           if ( (*lineIt).parameterList().contains( QLatin1String( "charset" ) ) ) {
00264             // have to convert the data
00265             const QString value = (*lineIt).value().toString();
00266             QTextCodec *codec = QTextCodec::codecForName(
00267               (*lineIt).parameter( QLatin1String( "charset" ) ).toLatin1() );
00268             if ( codec ) {
00269               input = codec->fromUnicode( value );
00270             } else {
00271               input = value.toUtf8();
00272             }
00273           } else if ( (*lineIt).value().type() == QVariant::ByteArray ) {
00274             input = (*lineIt).value().toByteArray();
00275           } else {
00276             input = (*lineIt).value().toString().toUtf8();
00277           }
00278 
00279           // handle encoding
00280           if ( hasEncoding ) { // have to encode the data
00281             if ( encodingType == QLatin1String( "b" ) ) {
00282               output = input.toBase64();
00283             } else if ( encodingType == QLatin1String( "quoted-printable" ) ) {
00284               KCodecs::quotedPrintableEncode( input, output, false );
00285             }
00286           } else {
00287             output = input;
00288           }
00289 
00290           addEscapes( output );
00291 
00292           if ( !output.isEmpty() ) {
00293             textLine.append( ':' + output );
00294 
00295             if ( textLine.length() > FOLD_WIDTH ) { // we have to fold the line
00296               for ( int i = 0; i <= ( textLine.length() / FOLD_WIDTH ); ++i ) {
00297                 text.append(
00298                   ( i == 0 ? "" : " " ) + textLine.mid( i * FOLD_WIDTH, FOLD_WIDTH ) + "\r\n" );
00299               }
00300             } else {
00301               text.append( textLine + "\r\n" );
00302             }
00303           }
00304         }
00305       }
00306     }
00307 
00308     text.append( "END:VCARD\r\n" );
00309     text.append( "\r\n" );
00310   }
00311 
00312   return text;
00313 }
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