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kabc

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 *)"\\r", "\r" );
00042   str.replace( (char *)"\\,", "," );
00043   str.replace( (char *)"\\\\", "\\" );
00044 }
00045 
00046 VCardParser::VCardParser()
00047 {
00048 }
00049 
00050 VCardParser::~VCardParser()
00051 {
00052 }
00053 
00054 VCard::List VCardParser::parseVCards( const QByteArray &text )
00055 {
00056   VCard currentVCard;
00057   VCard::List vCardList;
00058   QByteArray currentLine;
00059 
00060   QList<QByteArray> lines = text.split( '\n' );
00061 
00062   bool inVCard = false;
00063   QList<QByteArray>::Iterator it( lines.begin() );
00064   QList<QByteArray>::Iterator linesEnd( lines.end() );
00065   for ( ; it != linesEnd; ++it ) {
00066     // remove the trailing \r, left from \r\n
00067     if ( (*it).endsWith( '\r' ) ) {
00068         (*it).chop( 1 );
00069     }
00070 
00071     if ( (*it).startsWith( ' ' ) || (*it).startsWith( '\t' ) ) { //folded line => append to previous
00072       currentLine.append( (*it).mid( 1 ) );
00073       continue;
00074     } else {
00075       if ( (*it).trimmed().isEmpty() ) { // empty line
00076         continue;
00077       }
00078       if ( inVCard && !currentLine.isEmpty() ) { // now parse the line
00079         int colon = currentLine.indexOf( ':' );
00080         if ( colon == -1 ) { // invalid line
00081           currentLine = (*it);
00082           continue;
00083         }
00084 
00085         VCardLine vCardLine;
00086         const QByteArray key = currentLine.left( colon ).trimmed();
00087         QByteArray value = currentLine.mid( colon + 1 );
00088 
00089         QList<QByteArray> params = key.split( ';' );
00090 
00091         // check for group
00092         int groupPos = params[ 0 ].indexOf( '.' );
00093         if ( groupPos != -1 ) {
00094           vCardLine.setGroup( QString::fromLatin1( params[ 0 ].left( groupPos ) ) );
00095           vCardLine.setIdentifier( QString::fromLatin1( params[ 0 ].mid( groupPos + 1 ) ) );
00096         } else {
00097           vCardLine.setIdentifier( QString::fromLatin1( params[ 0 ] ) );
00098         }
00099 
00100         if ( params.count() > 1 ) { // find all parameters
00101           QList<QByteArray>::ConstIterator paramIt( params.constBegin() );
00102           for ( ++paramIt; paramIt != params.constEnd(); ++paramIt ) {
00103             QList<QByteArray> pair = (*paramIt).split( '=' );
00104             if ( pair.count() == 1 ) {
00105               // correct the fucking 2.1 'standard'
00106               if ( pair[ 0 ].toLower() == "quoted-printable" ) {
00107                 pair[ 0 ] = "encoding";
00108                 pair.append( "quoted-printable" );
00109               } else if ( pair[ 0 ].toLower() == "base64" ) {
00110                 pair[ 0 ] = "encoding";
00111                 pair.append( "base64" );
00112               } else {
00113                 pair.prepend( "type" );
00114               }
00115             }
00116             if ( pair[ 1 ].indexOf( ',' ) != -1 ) { // parameter in type=x,y,z format
00117               const QList<QByteArray> args = pair[ 1 ].split( ',' );
00118               QList<QByteArray>::ConstIterator argIt;
00119               for ( argIt = args.constBegin(); argIt != args.constEnd(); ++argIt ) {
00120                 vCardLine.addParameter( QString::fromLatin1( pair[ 0 ].toLower() ),
00121                                         QString::fromLatin1( *argIt ) );
00122               }
00123             } else {
00124               vCardLine.addParameter( QString::fromLatin1( pair[ 0 ].toLower() ),
00125                                       QString::fromLatin1( pair[ 1 ] ) );
00126             }
00127           }
00128         }
00129 
00130         removeEscapes( value );
00131 
00132         QByteArray output;
00133         bool wasBase64Encoded = false;
00134 
00135         if ( vCardLine.parameterList().contains( QLatin1String( "encoding" ) ) ) {
00136           const QString encoding = vCardLine.parameter( QLatin1String( "encoding" ) ).toLower();
00137 
00138           // have to decode the data
00139           if ( encoding == QLatin1String( "b" ) || encoding == QLatin1String( "base64" ) ) {
00140             output = QByteArray::fromBase64( value );
00141             wasBase64Encoded = true;
00142           }
00143           else if ( encoding == QLatin1String( "quoted-printable" ) ) {
00144             // join any qp-folded lines
00145             while ( value.endsWith( '=' ) && it != linesEnd ) {
00146               value.chop( 1 ); // remove the '='
00147               value.append( *it );
00148               ++it;
00149             }
00150             KCodecs::quotedPrintableDecode( value, output );
00151           } else if ( encoding == QLatin1String( "8bit" ) ) {
00152             output = value;
00153           } else {
00154             qDebug( "Unknown vcard encoding type!" );
00155           }
00156         } else {
00157           output = value;
00158         }
00159 
00160         if ( vCardLine.parameterList().contains( QLatin1String( "charset" ) ) ) {
00161           // have to convert the data
00162           QTextCodec *codec = QTextCodec::codecForName(
00163             vCardLine.parameter( QLatin1String( "charset" ) ).toLatin1() );
00164           if ( codec ) {
00165             vCardLine.setValue( codec->toUnicode( output ) );
00166           } else {
00167             vCardLine.setValue( QString::fromUtf8( output ) );
00168           }
00169         } else if ( wasBase64Encoded ) {
00170             vCardLine.setValue( output );
00171         } else {
00172             vCardLine.setValue( QString::fromUtf8( output ) );
00173         }
00174 
00175         currentVCard.addLine( vCardLine );
00176       }
00177 
00178       // we do not save the start and end tag as vcardline
00179       if ( (*it).toLower().startsWith( "begin:vcard" ) ) { //krazy:exclude=strings
00180         inVCard = true;
00181         currentLine.clear();
00182         currentVCard.clear(); // flush vcard
00183         continue;
00184       }
00185 
00186       if ( (*it).toLower().startsWith( "end:vcard" ) ) { //krazy:exclude=strings
00187         inVCard = false;
00188         vCardList.append( currentVCard );
00189         currentLine.clear();
00190         currentVCard.clear(); // flush vcard
00191         continue;
00192       }
00193 
00194       currentLine = (*it);
00195     }
00196   }
00197 
00198   return vCardList;
00199 }
00200 
00201 QByteArray VCardParser::createVCards( const VCard::List &list )
00202 {
00203   QByteArray text;
00204   QByteArray textLine;
00205   QString encodingType;
00206   QStringList idents;
00207   QStringList params;
00208   QStringList values;
00209   QStringList::ConstIterator identIt;
00210   QStringList::Iterator paramIt;
00211   QStringList::ConstIterator valueIt;
00212 
00213   VCardLine::List lines;
00214   VCardLine::List::ConstIterator lineIt;
00215   VCard::List::ConstIterator cardIt;
00216 
00217   bool hasEncoding;
00218 
00219   text.reserve( list.size() * 300 ); // reserve memory to be more efficient
00220 
00221   // iterate over the cards
00222   VCard::List::ConstIterator listEnd( list.end() );
00223   for ( cardIt = list.begin(); cardIt != listEnd; ++cardIt ) {
00224     text.append( "BEGIN:VCARD\r\n" );
00225 
00226     idents = (*cardIt).identifiers();
00227     for ( identIt = idents.constBegin(); identIt != idents.constEnd(); ++identIt ) {
00228       lines = (*cardIt).lines( (*identIt) );
00229 
00230       // iterate over the lines
00231       for ( lineIt = lines.constBegin(); lineIt != lines.constEnd(); ++lineIt ) {
00232         QVariant val = (*lineIt).value();
00233         if ( val.isValid() ) {
00234           if ( (*lineIt).hasGroup() ) {
00235             textLine = (*lineIt).group().toLatin1() + '.' + (*lineIt).identifier().toLatin1();
00236           } else {
00237             textLine = (*lineIt).identifier().toLatin1();
00238           }
00239 
00240           params = (*lineIt).parameterList();
00241           hasEncoding = false;
00242           if ( params.count() > 0 ) { // we have parameters
00243             for ( paramIt = params.begin(); paramIt != params.end(); ++paramIt ) {
00244               if ( (*paramIt) == QLatin1String( "encoding" ) ) {
00245                 hasEncoding = true;
00246                 encodingType = (*lineIt).parameter( QLatin1String( "encoding" ) ).toLower();
00247               }
00248 
00249               values = (*lineIt).parameters( *paramIt );
00250               for ( valueIt = values.constBegin(); valueIt != values.constEnd(); ++valueIt ) {
00251                 textLine.append( ';' + (*paramIt).toLatin1().toUpper() );
00252                 if ( !(*valueIt).isEmpty() ) {
00253                   textLine.append( '=' + (*valueIt).toLatin1() );
00254                 }
00255               }
00256             }
00257           }
00258 
00259           QByteArray input, output;
00260 
00261           // handle charset
00262           if ( (*lineIt).parameterList().contains( QLatin1String( "charset" ) ) ) {
00263             // have to convert the data
00264             const QString value = (*lineIt).value().toString();
00265             QTextCodec *codec = QTextCodec::codecForName(
00266               (*lineIt).parameter( QLatin1String( "charset" ) ).toLatin1() );
00267             if ( codec ) {
00268               input = codec->fromUnicode( value );
00269             } else {
00270               input = value.toUtf8();
00271             }
00272           } else if ( (*lineIt).value().type() == QVariant::ByteArray ) {
00273             input = (*lineIt).value().toByteArray();
00274           } else {
00275             input = (*lineIt).value().toString().toUtf8();
00276           }
00277 
00278           // handle encoding
00279           if ( hasEncoding ) { // have to encode the data
00280             if ( encodingType == QLatin1String( "b" ) ) {
00281               output = input.toBase64();
00282             } else if ( encodingType == QLatin1String( "quoted-printable" ) ) {
00283               KCodecs::quotedPrintableEncode( input, output, false );
00284             }
00285           } else {
00286             output = input;
00287           }
00288 
00289           addEscapes( output );
00290 
00291           if ( !output.isEmpty() ) {
00292             textLine.append( ':' + output );
00293 
00294             if ( textLine.length() > FOLD_WIDTH ) { // we have to fold the line
00295               for ( int i = 0; i <= ( textLine.length() / FOLD_WIDTH ); ++i ) {
00296                 text.append(
00297                   ( i == 0 ? "" : " " ) + textLine.mid( i * FOLD_WIDTH, FOLD_WIDTH ) + "\r\n" );
00298               }
00299             } else {
00300               text.append( textLine + "\r\n" );
00301             }
00302           }
00303         }
00304       }
00305     }
00306 
00307     text.append( "END:VCARD\r\n" );
00308     text.append( "\r\n" );
00309   }
00310 
00311   return text;
00312 }

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