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KDECore

kurl.cpp

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00001 /*
00002     Copyright (C) 1999 Torben Weis <weis@kde.org>
00003 
00004     This library is free software; you can redistribute it and/or
00005     modify it under the terms of the GNU Library General Public
00006     License as published by the Free Software Foundation; either
00007     version 2 of the License, or (at your option) any later version.
00008 
00009     This library is distributed in the hope that it will be useful,
00010     but WITHOUT ANY WARRANTY; without even the implied warranty of
00011     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012     Library General Public License for more details.
00013 
00014     You should have received a copy of the GNU Library General Public License
00015     along with this library; see the file COPYING.LIB.  If not, write to
00016     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00017     Boston, MA 02110-1301, USA.
00018 */
00019 
00020 /*
00021  * The currently active RFC for URL/URIs is RFC3986
00022  * Previous (and now deprecated) RFCs are RFC1738 and RFC2396
00023  */
00024 
00025 #include "kurl.h"
00026 
00027 // KDE_QT_ONLY is first used for dcop/client (e.g. marshalling)
00028 #ifndef KDE_QT_ONLY
00029 #include <kdebug.h>
00030 #include <kglobal.h>
00031 #include <kidna.h>
00032 #include <kprotocolinfo.h>
00033 #endif
00034 
00035 #include <stdio.h>
00036 #include <assert.h>
00037 #include <ctype.h>
00038 #include <stdlib.h>
00039 #include <unistd.h>
00040 
00041 #include <qurl.h>
00042 #include <qdir.h>
00043 #include <qstringlist.h>
00044 #include <qregexp.h>
00045 #include <qstylesheet.h>
00046 #include <qmap.h>
00047 #include <qtextcodec.h>
00048 #include <qmutex.h>
00049 
00050 #ifdef Q_WS_WIN
00051 # define KURL_ROOTDIR_PATH "C:/"
00052 #else
00053 # define KURL_ROOTDIR_PATH "/"
00054 #endif
00055 
00056 static const QString fileProt = "file";
00057 
00058 static QTextCodec * codecForHint( int encoding_hint /* not 0 ! */ )
00059 {
00060     return QTextCodec::codecForMib( encoding_hint );
00061 }
00062 
00063 // encoding_offset:
00064 // 0 encode both @ and /
00065 // 1 encode @ but not /
00066 // 2 encode neither @ or /
00067 static QString encode( const QString& segment, int encoding_offset, int encoding_hint, bool isRawURI = false )
00068 {
00069   const char *encode_string = "/@<>#\"&?={}|^~[]\'`\\:+%";
00070   encode_string += encoding_offset;
00071 
00072   QCString local;
00073   if (encoding_hint==0)
00074     local = segment.local8Bit();
00075   else
00076   {
00077       QTextCodec * textCodec = codecForHint( encoding_hint );
00078       if (!textCodec)
00079           local = segment.local8Bit();
00080       else
00081           local = textCodec->fromUnicode( segment );
00082   }
00083 
00084   int old_length = isRawURI ? local.size() - 1 : local.length();
00085 
00086   if ( !old_length )
00087     return segment.isNull() ? QString::null : QString(""); // differentiate null and empty
00088 
00089   // a worst case approximation
00090   QChar *new_segment = new QChar[ old_length * 3 + 1 ];
00091   int new_length = 0;
00092 
00093   for ( int i = 0; i < old_length; i++ )
00094   {
00095     // 'unsave' and 'reserved' characters
00096     // according to RFC 1738,
00097     // 2.2. URL Character Encoding Issues (pp. 3-4)
00098     // WABA: Added non-ascii
00099     unsigned char character = local[i];
00100     if ( (character <= 32) || (character >= 127) ||
00101          strchr(encode_string, character) )
00102     {
00103       new_segment[ new_length++ ] = '%';
00104 
00105       unsigned int c = character / 16;
00106       c += (c > 9) ? ('A' - 10) : '0';
00107       new_segment[ new_length++ ] = c;
00108 
00109       c = character % 16;
00110       c += (c > 9) ? ('A' - 10) : '0';
00111       new_segment[ new_length++ ] = c;
00112 
00113     }
00114     else
00115       new_segment[ new_length++ ] = local[i];
00116   }
00117 
00118   QString result = QString(new_segment, new_length);
00119   delete [] new_segment;
00120   return result;
00121 }
00122 
00123 static QString encodeHost( const QString& segment, bool encode_slash, int encoding_hint )
00124 {
00125   // Hostnames are encoded differently
00126   // we use the IDNA transformation instead
00127 
00128   // Note: when merging qt-addon, use QResolver::domainToAscii here
00129 #ifndef KDE_QT_ONLY
00130   Q_UNUSED( encode_slash );
00131   Q_UNUSED( encoding_hint );
00132   QString host = KIDNA::toAscii(segment);
00133   if (host.isEmpty())
00134      return segment;
00135   return host;
00136 #else
00137   return encode(segment, encode_slash ? 0 : 1, encoding_hint);
00138 #endif
00139 }
00140 
00141 static int hex2int( unsigned int _char )
00142 {
00143   if ( _char >= 'A' && _char <='F')
00144     return _char - 'A' + 10;
00145   if ( _char >= 'a' && _char <='f')
00146     return _char - 'a' + 10;
00147   if ( _char >= '0' && _char <='9')
00148     return _char - '0';
00149   return -1;
00150 }
00151 
00152 // WABA: The result of lazy_encode isn't usable for a URL which
00153 // needs to satisfies RFC requirements. However, the following
00154 // operation will make it usable again:
00155 //      encode(decode(...))
00156 //
00157 // As a result one can see that url.prettyURL() does not result in
00158 // a RFC compliant URL but that the following sequence does:
00159 //      KURL(url.prettyURL()).url()
00160 
00161 
00162 static QString lazy_encode( const QString& segment, bool encodeAt=true )
00163 {
00164   int old_length = segment.length();
00165 
00166   if ( !old_length )
00167     return QString::null;
00168 
00169   // a worst case approximation
00170   QChar *new_segment = new QChar[ old_length * 3 + 1 ];
00171   int new_length = 0;
00172 
00173   for ( int i = 0; i < old_length; i++ )
00174   {
00175     unsigned int character = segment[i].unicode(); // Don't use latin1()
00176                                                    // It returns 0 for non-latin1 values
00177     // Small set of really ambiguous chars
00178     if ((character < 32) ||  // Low ASCII
00179         ((character == '%') && // The escape character itself
00180            (i+2 < old_length) && // But only if part of a valid escape sequence!
00181           (hex2int(segment[i+1].unicode())!= -1) &&
00182           (hex2int(segment[i+2].unicode())!= -1)) ||
00183         (character == '?') || // Start of query delimiter
00184         ((character == '@') && encodeAt) || // Username delimiter
00185         (character == '#') || // Start of reference delimiter
00186         ((character == 32) && (i+1 == old_length || segment[i+1] == ' '))) // A trailing space
00187     {
00188       new_segment[ new_length++ ] = '%';
00189 
00190       unsigned int c = character / 16;
00191       c += (c > 9) ? ('A' - 10) : '0';
00192       new_segment[ new_length++ ] = c;
00193 
00194       c = character % 16;
00195       c += (c > 9) ? ('A' - 10) : '0';
00196       new_segment[ new_length++ ] = c;
00197     }
00198     else
00199     new_segment[ new_length++ ] = segment[i];
00200   }
00201 
00202   QString result = QString(new_segment, new_length);
00203   delete [] new_segment;
00204   return result;
00205 }
00206 
00207 static void decode( const QString& segment, QString &decoded, QString &encoded, int encoding_hint=0, bool updateDecoded = true, bool isRawURI = false )
00208 {
00209   decoded = QString::null;
00210   encoded = segment;
00211 
00212   int old_length = segment.length();
00213   if ( !old_length )
00214     return;
00215 
00216   QTextCodec *textCodec = 0;
00217   if (encoding_hint)
00218       textCodec = codecForHint( encoding_hint );
00219 
00220   if (!textCodec)
00221       textCodec = QTextCodec::codecForLocale();
00222 
00223   QCString csegment = textCodec->fromUnicode(segment);
00224   // Check if everything went ok
00225   if (textCodec->toUnicode(csegment) != segment)
00226   {
00227       // Uh oh
00228       textCodec = codecForHint( 106 ); // Fall back to utf-8
00229       csegment = textCodec->fromUnicode(segment);
00230   }
00231   old_length = csegment.length();
00232 
00233   int new_length = 0;
00234   int new_length2 = 0;
00235 
00236   // make a copy of the old one
00237   char *new_segment = new char[ old_length + 1 ];
00238   QChar *new_usegment = new QChar[ old_length * 3 + 1 ];
00239 
00240   int i = 0;
00241   while( i < old_length )
00242   {
00243     bool bReencode = false;
00244     unsigned char character = csegment[ i++ ];
00245     if ((character <= ' ') || (character > 127))
00246        bReencode = true;
00247 
00248     new_usegment [ new_length2++ ] = character;
00249     if (character == '%' )
00250     {
00251       int a = i+1 < old_length ? hex2int( csegment[i] ) : -1;
00252       int b = i+1 < old_length ? hex2int( csegment[i+1] ) : -1;
00253       if ((a == -1) || (b == -1)) // Only replace if sequence is valid
00254       {
00255          // Contains stray %, make sure to re-encode!
00256          bReencode = true;
00257       }
00258       else
00259       {
00260          // Valid %xx sequence
00261          character = a * 16 + b; // Replace with value of %dd
00262          if (!isRawURI && !character && updateDecoded)
00263             break; // Stop at %00
00264 
00265          new_usegment [ new_length2++ ] = (unsigned char) csegment[i++];
00266          new_usegment [ new_length2++ ] = (unsigned char) csegment[i++];
00267       }
00268     }
00269     if (bReencode)
00270     {
00271       new_length2--;
00272       new_usegment [ new_length2++ ] = '%';
00273 
00274       unsigned int c = character / 16;
00275       c += (c > 9) ? ('A' - 10) : '0';
00276       new_usegment[ new_length2++ ] = c;
00277 
00278       c = character % 16;
00279       c += (c > 9) ? ('A' - 10) : '0';
00280       new_usegment[ new_length2++ ] = c;
00281     }
00282 
00283     new_segment [ new_length++ ] = character;
00284   }
00285   new_segment [ new_length ] = 0;
00286 
00287   encoded = QString( new_usegment, new_length2);
00288 
00289   // Encoding specified
00290   if (updateDecoded)
00291   {
00292      decoded = textCodec->toUnicode( new_segment );
00293      if ( isRawURI ) {
00294         int length = qstrlen( new_segment );
00295         while ( length < new_length ) {
00296             decoded += QChar::null;
00297             length += 1;
00298             decoded += textCodec->toUnicode( new_segment + length );
00299             length += qstrlen( new_segment + length );
00300         }
00301      }
00302 
00303      QCString validate = textCodec->fromUnicode(decoded);
00304 
00305      if (strcmp(validate.data(), new_segment) != 0)
00306      {
00307         decoded = QString::fromLocal8Bit(new_segment, new_length);
00308      }
00309   }
00310 
00311   delete [] new_segment;
00312   delete [] new_usegment;
00313 }
00314 
00315 static QString decode(const QString &segment, int encoding_hint = 0, bool isRawURI = false)
00316 {
00317   QString result;
00318   QString tmp;
00319   decode(segment, result, tmp, encoding_hint, true, isRawURI);
00320   return result;
00321 }
00322 
00323 static QString cleanpath(const QString &_path, bool cleanDirSeparator, bool decodeDots)
00324 {
00325   if (_path.isEmpty()) return QString::null;
00326 
00327   if (QDir::isRelativePath(_path))
00328      return _path; // Don't mangle mailto-style URLs
00329 
00330   QString path = _path;
00331 
00332   int len = path.length();
00333 
00334   if (decodeDots)
00335   {
00336 #ifndef KDE_QT_ONLY
00337      static const QString &encodedDot = KGlobal::staticQString("%2e");
00338 #else
00339      QString encodedDot("%2e");
00340 #endif
00341      if (path.find(encodedDot, 0, false) != -1)
00342      {
00343 #ifndef KDE_QT_ONLY
00344         static const QString &encodedDOT = KGlobal::staticQString("%2E"); // Uppercase!
00345 #else
00346         QString encodedDOT("%2E");
00347 #endif
00348         path.replace(encodedDot, ".");
00349         path.replace(encodedDOT, ".");
00350         len = path.length();
00351      }
00352   }
00353 
00354   bool slash = (len && path[len-1] == '/') ||
00355                (len > 1 && path[len-2] == '/' && path[len-1] == '.');
00356 
00357   // The following code cleans up directory path much like
00358   // QDir::cleanDirPath() except it can be made to ignore multiple
00359   // directory separators by setting the flag to false.  That fixes
00360   // bug# 15044, mail.altavista.com and other similar brain-dead server
00361   // implementations that do not follow what has been specified in
00362   // RFC 2396!! (dA)
00363   QString result;
00364   int cdUp, orig_pos, pos;
00365 
00366   cdUp = 0;
00367   pos = orig_pos = len;
00368   while ( pos && (pos = path.findRev('/',--pos)) != -1 )
00369   {
00370     len = orig_pos - pos - 1;
00371     if ( len == 2 && path[pos+1] == '.' && path[pos+2] == '.' )
00372       cdUp++;
00373     else
00374     {
00375       // Ignore any occurrences of '.'
00376       // This includes entries that simply do not make sense like /..../
00377       if ( (len || !cleanDirSeparator) &&
00378            (len != 1 || path[pos+1] != '.' ) )
00379       {
00380           if ( !cdUp )
00381               result.prepend(path.mid(pos, len+1));
00382           else
00383               cdUp--;
00384       }
00385     }
00386     orig_pos = pos;
00387   }
00388 
00389 #ifdef Q_WS_WIN // prepend drive letter if exists (js)
00390   if (orig_pos >= 2 && isalpha(path[0].latin1()) && path[1]==':') {
00391     result.prepend(QString(path[0])+":");
00392   }
00393 #endif
00394 
00395   if ( result.isEmpty() )
00396     result = KURL_ROOTDIR_PATH;
00397   else if ( slash && result[result.length()-1] != '/' )
00398        result.append('/');
00399 
00400   return result;
00401 }
00402 
00403 bool KURL::isRelativeURL(const QString &_url)
00404 {
00405   int len = _url.length();
00406   if (!len) return true; // Very short relative URL.
00407   const QChar *str = _url.unicode();
00408 
00409   // Absolute URL must start with alpha-character
00410   if (!isalpha(str[0].latin1()))
00411      return true; // Relative URL
00412 
00413   for(int i = 1; i < len; i++)
00414   {
00415      char c = str[i].latin1(); // Note: non-latin1 chars return 0!
00416      if (c == ':')
00417         return false; // Absolute URL
00418 
00419      // Protocol part may only contain alpha, digit, + or -
00420      if (!isalpha(c) && !isdigit(c) && (c != '+') && (c != '-'))
00421         return true; // Relative URL
00422   }
00423   // URL did not contain ':'
00424   return true; // Relative URL
00425 }
00426 
00427 KURL::List::List(const KURL &url)
00428 {
00429     append( url );
00430 }
00431 
00432 KURL::List::List(const QStringList &list)
00433 {
00434   for (QStringList::ConstIterator it = list.begin();
00435        it != list.end();
00436        it++)
00437     {
00438       append( KURL(*it) );
00439     }
00440 }
00441 
00442 QStringList KURL::List::toStringList() const
00443 {
00444   QStringList lst;
00445    for( KURL::List::ConstIterator it = begin();
00446         it != end();
00447         it++)
00448    {
00449       lst.append( (*it).url() );
00450    }
00451    return lst;
00452 }
00453 
00454 
00455 KURL::KURL()
00456 {
00457   reset();
00458 }
00459 
00460 KURL::~KURL()
00461 {
00462 }
00463 
00464 
00465 KURL::KURL( const QString &url, int encoding_hint )
00466 {
00467   reset();
00468   parse( url, encoding_hint );
00469 }
00470 
00471 KURL::KURL( const char * url, int encoding_hint )
00472 {
00473   reset();
00474   parse( QString::fromLatin1(url), encoding_hint );
00475 }
00476 
00477 KURL::KURL( const QCString& url, int encoding_hint )
00478 {
00479   reset();
00480   parse( QString::fromLatin1(url), encoding_hint );
00481 }
00482 
00483 KURL::KURL( const KURL& _u )
00484 {
00485   *this = _u;
00486 }
00487 
00488 QDataStream & operator<< (QDataStream & s, const KURL & a)
00489 {
00490   QString QueryForWire=a.m_strQuery_encoded;
00491   if (!a.m_strQuery_encoded.isNull())
00492     QueryForWire.prepend("?");
00493 
00494     s << a.m_strProtocol << a.m_strUser << a.m_strPass << a.m_strHost
00495       << a.m_strPath << a.m_strPath_encoded << QueryForWire << a.m_strRef_encoded
00496       << Q_INT8(a.m_bIsMalformed ? 1 : 0) << a.m_iPort;
00497     return s;
00498 }
00499 
00500 QDataStream & operator>> (QDataStream & s, KURL & a)
00501 {
00502     Q_INT8 malf;
00503     QString QueryFromWire;
00504     s >> a.m_strProtocol >> a.m_strUser >> a.m_strPass >> a.m_strHost
00505       >> a.m_strPath >> a.m_strPath_encoded >> QueryFromWire >> a.m_strRef_encoded
00506       >> malf >> a.m_iPort;
00507     a.m_bIsMalformed = (malf != 0);
00508 
00509     if ( QueryFromWire.isNull() )
00510       a.m_strQuery_encoded = QString::null;
00511     else if ( QueryFromWire.length() == 1 ) // empty query
00512       a.m_strQuery_encoded = "";
00513     else
00514       a.m_strQuery_encoded = QueryFromWire.mid(1);
00515 
00516     a.m_iUriMode = KURL::uriModeForProtocol( a.m_strProtocol );
00517 
00518     return s;
00519 }
00520 
00521 #ifndef QT_NO_NETWORKPROTOCOL
00522 KURL::KURL( const QUrl &u )
00523 {
00524   *this = u;
00525 }
00526 #endif
00527 
00528 KURL::KURL( const KURL& _u, const QString& _rel_url, int encoding_hint )
00529 {
00530   if (_u.hasSubURL()) // Operate on the last suburl, not the first
00531   {
00532     KURL::List lst = split( _u );
00533     KURL u(lst.last(), _rel_url, encoding_hint);
00534     lst.remove( lst.last() );
00535     lst.append( u );
00536     *this = join( lst );
00537     return;
00538   }
00539   // WORKAROUND THE RFC 1606 LOOPHOLE THAT ALLOWS
00540   // http:/index.html AS A VALID SYNTAX FOR RELATIVE
00541   // URLS. ( RFC 2396 section 5.2 item # 3 )
00542   QString rUrl = _rel_url;
00543   int len = _u.m_strProtocol.length();
00544   if ( !_u.m_strHost.isEmpty() && !rUrl.isEmpty() &&
00545        rUrl.find( _u.m_strProtocol, 0, false ) == 0 &&
00546        rUrl[len] == ':' && (rUrl[len+1] != '/' ||
00547        (rUrl[len+1] == '/' && rUrl[len+2] != '/')) )
00548   {
00549     rUrl.remove( 0, rUrl.find( ':' ) + 1 );
00550   }
00551 
00552   if ( rUrl.isEmpty() )
00553   {
00554     *this = _u;
00555   }
00556   else if ( rUrl[0] == '#' )
00557   {
00558     *this = _u;
00559     m_strRef_encoded = rUrl.mid(1);
00560     if ( m_strRef_encoded.isNull() )
00561         m_strRef_encoded = ""; // we know there was an (empty) html ref, we saw the '#'
00562   }
00563   else if ( isRelativeURL( rUrl) )
00564   {
00565     *this = _u;
00566     m_strQuery_encoded = QString::null;
00567     m_strRef_encoded = QString::null;
00568     if ( rUrl[0] == '/')
00569     {
00570         if ((rUrl.length() > 1) && (rUrl[1] == '/'))
00571         {
00572            m_strHost = QString::null;
00573            // File protocol returns file:/// without host, strip // from rUrl
00574            if (_u.m_strProtocol == fileProt)
00575               rUrl.remove(0, 2);
00576         }
00577         m_strPath = QString::null;
00578         m_strPath_encoded = QString::null;
00579     }
00580     else if ( rUrl[0] != '?' )
00581     {
00582        int pos = m_strPath.findRev( '/' );
00583        if (pos >= 0)
00584           m_strPath.truncate(pos);
00585        m_strPath += '/';
00586        if (!m_strPath_encoded.isEmpty())
00587        {
00588           pos = m_strPath_encoded.findRev( '/' );
00589           if (pos >= 0)
00590              m_strPath_encoded.truncate(pos);
00591           m_strPath_encoded += '/';
00592        }
00593     }
00594     else
00595     {
00596        if ( m_strPath.isEmpty() )
00597           m_strPath = '/';
00598     }
00599     KURL tmp( url() + rUrl, encoding_hint);
00600     *this = tmp;
00601     cleanPath(false);
00602   }
00603   else
00604   {
00605     KURL tmp( rUrl, encoding_hint);
00606     *this = tmp;
00607     // Preserve userinfo if applicable.
00608     if (!_u.m_strUser.isEmpty() && m_strUser.isEmpty() && (_u.m_strHost == m_strHost) && (_u.m_strProtocol == m_strProtocol))
00609     {
00610        m_strUser = _u.m_strUser;
00611        m_strPass = _u.m_strPass;
00612     }
00613     cleanPath(false);
00614   }
00615 }
00616 
00617 void KURL::reset()
00618 {
00619   m_strProtocol = QString::null;
00620   m_strUser = QString::null;
00621   m_strPass = QString::null;
00622   m_strHost = QString::null;
00623   m_strPath = QString::null;
00624   m_strPath_encoded = QString::null;
00625   m_strQuery_encoded = QString::null;
00626   m_strRef_encoded = QString::null;
00627   m_bIsMalformed = true;
00628   m_iPort = 0;
00629   m_iUriMode = Auto;
00630 }
00631 
00632 bool KURL::isEmpty() const
00633 {
00634   return (m_strPath.isEmpty() && m_strProtocol.isEmpty());
00635 }
00636 
00637 void KURL::parse( const QString& _url, int encoding_hint )
00638 {
00639     if ( _url.isEmpty() || m_iUriMode == Invalid )
00640     {
00641     m_strProtocol = _url;
00642     m_iUriMode = Invalid;
00643     return;
00644     }
00645 
00646     const QChar* buf = _url.unicode();
00647     const QChar* orig = buf;
00648     uint len = _url.length();
00649     uint pos = 0;
00650 
00651     // Node 1: Accept alpha or slash
00652     QChar x = buf[pos++];
00653 #ifdef Q_WS_WIN
00654     /* win32: accept <letter>: or <letter>:/ or <letter>:\ */
00655     const bool alpha = isalpha((int)x);
00656     if (alpha && len<2)
00657         goto NodeErr;
00658     if (alpha && buf[pos]==':' && (len==2 || (len>2 && (buf[pos+1]=='/' || buf[pos+1]=='\\'))))
00659 #else
00660     if ( x == '/' )
00661 #endif
00662     {
00663     // A slash means we immediately proceed to parse it as a file URL.
00664     m_iUriMode = URL;
00665     m_strProtocol = fileProt;
00666     parseURL( _url, encoding_hint );
00667     return;
00668     }
00669     if ( !isalpha( (int)x ) )
00670     goto NodeErr;
00671 
00672     // Node 2: Accept any amount of (alpha|digit|'+'|'-')
00673     // '.' is not currently accepted, because current KURL may be confused.
00674     // Proceed with :// :/ or :
00675     while( pos < len && (isalpha((int)buf[pos]) || isdigit((int)buf[pos]) ||
00676              buf[pos] == '+' || buf[pos] == '-')) pos++;
00677 
00678     if (pos < len && buf[pos] == ':' )
00679     {
00680     m_strProtocol = QString( orig, pos ).lower();
00681     if ( m_iUriMode == Auto )
00682         m_iUriMode = uriModeForProtocol( m_strProtocol );
00683     // Proceed to correct parse function.
00684     switch ( m_iUriMode )
00685     {
00686     case RawURI:
00687         parseRawURI( _url );
00688         return;
00689     case Mailto:
00690         parseMailto( _url );
00691         return;
00692     case URL:
00693         parseURL( _url, encoding_hint );
00694         return;
00695     default:
00696         // Unknown URI mode results in an invalid URI.
00697         break;
00698     }
00699     }
00700 
00701 NodeErr:
00702     reset();
00703     m_strProtocol = _url;
00704     m_iUriMode = Invalid;
00705 }
00706 
00707 void KURL::parseRawURI( const QString& _url, int encoding_hint )
00708 {
00709     uint len = _url.length();
00710     const QChar* buf = _url.unicode();
00711 
00712     uint pos = 0;
00713 
00714     // Accept any amount of (alpha|digit|'+'|'-')
00715     // '.' is not currently accepted, because current KURL may be confused.
00716     // Proceed with :
00717     while( pos < len && (isalpha((int)buf[pos]) || isdigit((int)buf[pos]) ||
00718              buf[pos] == '+' || buf[pos] == '-')) pos++;
00719 
00720     // Note that m_strProtocol is already set here, so we just skip over the protocol.
00721     if (pos < len && buf[pos] == ':' )
00722     pos++;
00723     else { // can't happen, the caller checked all this already
00724     reset();
00725     m_strProtocol = _url;
00726     m_iUriMode = Invalid;
00727     return;
00728     }
00729 
00730     if ( pos == len ) // can't happen, the caller checked this already
00731     m_strPath = QString::null;
00732     else
00733     m_strPath = decode( QString( buf + pos, len - pos ), encoding_hint, true );
00734 
00735     m_bIsMalformed = false;
00736 
00737     return;
00738 }
00739 
00740 void KURL::parseMailto( const QString& _url, int encoding_hint )
00741 {
00742     parseURL( _url, encoding_hint);
00743     if ( m_bIsMalformed )
00744         return;
00745     QRegExp mailre("(.+@)(.+)");
00746     if ( mailre.exactMatch( m_strPath ) )
00747     {
00748 #ifndef KDE_QT_ONLY
00749     QString host = KIDNA::toUnicode( mailre.cap( 2 ) );
00750     if (host.isEmpty())
00751         host = mailre.cap( 2 ).lower();
00752 #else
00753     QString host = mailre.cap( 2 ).lower();
00754 #endif
00755     m_strPath = mailre.cap( 1 ) + host;
00756   }
00757 }
00758 
00759 void KURL::parseURL( const QString& _url, int encoding_hint )
00760 {
00761   QString port;
00762   bool badHostName = false;
00763   int start = 0;
00764   uint len = _url.length();
00765   const QChar* buf = _url.unicode();
00766 
00767   QChar delim;
00768   QString tmp;
00769 
00770   uint pos = 0;
00771 
00772   // Node 1: Accept alpha or slash
00773   QChar x = buf[pos++];
00774 #ifdef Q_WS_WIN
00775   /* win32: accept <letter>: or <letter>:/ or <letter>:\ */
00776   const bool alpha = isalpha((int)x);
00777   if (alpha && len<2)
00778     goto NodeErr;
00779   if (alpha && buf[pos]==':' && (len==2 || (len>2 && (buf[pos+1]=='/' || buf[pos+1]=='\\'))))
00780 #else
00781   if ( x == '/' )
00782 #endif
00783     goto Node9;
00784   if ( !isalpha( (int)x ) )
00785     goto NodeErr;
00786 
00787   // Node 2: Accept any amount of (alpha|digit|'+'|'-')
00788   // '.' is not currently accepted, because current KURL may be confused.
00789   // Proceed with :// :/ or :
00790   while( pos < len && (isalpha((int)buf[pos]) || isdigit((int)buf[pos]) ||
00791           buf[pos] == '+' || buf[pos] == '-')) pos++;
00792 
00793   // Note that m_strProtocol is already set here, so we just skip over the protocol.
00794   if ( pos+2 < len && buf[pos] == ':' && buf[pos+1] == '/' && buf[pos+2] == '/' )
00795     {
00796       pos += 3;
00797     }
00798   else if (pos+1 < len && buf[pos] == ':' ) // Need to always compare length()-1 otherwise KURL passes "http:" as legal!!
00799     {
00800       pos++;
00801       start = pos;
00802       goto Node9;
00803     }
00804   else
00805     goto NodeErr;
00806 
00807   //Node 3: We need at least one character here
00808   if ( pos == len )
00809       goto NodeErr;
00810   start = pos;
00811 
00812   // Node 4: Accept any amount of characters.
00813   if (buf[pos] == '[')     // An IPv6 host follows.
00814       goto Node8;
00815   // Terminate on / or @ or ? or # or " or ; or <
00816   x = buf[pos];
00817   while( (x != ':') && (x != '@') && (x != '/') && (x != '?') && (x != '#') )
00818   {
00819      if ((x == '\"') || (x == ';') || (x == '<'))
00820         badHostName = true;
00821      if (++pos == len)
00822         break;
00823      x = buf[pos];
00824   }
00825   if ( pos == len )
00826     {
00827       if (badHostName)
00828          goto NodeErr;
00829 
00830       setHost(decode(QString( buf + start, pos - start ), encoding_hint));
00831       goto NodeOk;
00832     }
00833   if ( x == '@' )
00834     {
00835       m_strUser = decode(QString( buf + start, pos - start ), encoding_hint);
00836       pos++;
00837       goto Node7;
00838     }
00839   else if ( (x == '/') || (x == '?') || (x == '#'))
00840     {
00841       if (badHostName)
00842          goto NodeErr;
00843 
00844       setHost(decode(QString( buf + start, pos - start ), encoding_hint));
00845       start = pos;
00846       goto Node9;
00847     }
00848   else if ( x != ':' )
00849     goto NodeErr;
00850   m_strUser = decode(QString( buf + start, pos - start ), encoding_hint);
00851   pos++;
00852 
00853   // Node 5: We need at least one character
00854   if ( pos == len )
00855     goto NodeErr;
00856   start = pos++;
00857 
00858   // Node 6: Read everything until @, /, ? or #
00859   while( (pos < len) &&
00860         (buf[pos] != '@') &&
00861         (buf[pos] != '/') &&
00862         (buf[pos] != '?') &&
00863         (buf[pos] != '#')) pos++;
00864   // If we now have a '@' the ':' seperates user and password.
00865   // Otherwise it seperates host and port.
00866   if ( (pos == len) || (buf[pos] != '@') )
00867     {
00868       // Ok the : was used to separate host and port
00869       if (badHostName)
00870          goto NodeErr;
00871       setHost(m_strUser);
00872       m_strUser = QString::null;
00873       QString tmp( buf + start, pos - start );
00874       char *endptr;
00875       m_iPort = (unsigned short int)strtol(tmp.ascii(), &endptr, 10);
00876       if ((pos == len) && (strlen(endptr) == 0))
00877         goto NodeOk;
00878       // there is more after the digits
00879       pos -= strlen(endptr);
00880       if ((buf[pos] != '@') &&
00881           (buf[pos] != '/') &&
00882           (buf[pos] != '?') &&
00883           (buf[pos] != '#'))
00884         goto NodeErr;
00885 
00886       start = pos;
00887       goto Node9;
00888     }
00889   m_strPass = decode(QString( buf + start, pos - start), encoding_hint);
00890   pos++;
00891 
00892   // Node 7: We need at least one character
00893  Node7:
00894   if ( pos == len )
00895     goto NodeErr;
00896 
00897  Node8:
00898   if (buf[pos] == '[')
00899   {
00900     // IPv6 address
00901     start = ++pos; // Skip '['
00902 
00903     if (pos == len)
00904     {
00905        badHostName = true;
00906        goto NodeErr;
00907     }
00908     // Node 8a: Read everything until ] or terminate
00909     badHostName = false;
00910     x = buf[pos];
00911     while( (x != ']') )
00912     {
00913        if ((x == '\"') || (x == ';') || (x == '<'))
00914           badHostName = true;
00915        if (++pos == len)
00916        {
00917           badHostName = true;
00918           break;
00919        }
00920        x = buf[pos];
00921     }
00922     if (badHostName)
00923        goto NodeErr;
00924     setHost(decode(QString( buf + start, pos - start ), encoding_hint));
00925     if (pos < len) pos++; // Skip ']'
00926     if (pos == len)
00927        goto NodeOk;
00928   }
00929   else
00930   {
00931     // Non IPv6 address, with a user
00932     start = pos;
00933 
00934     // Node 8b: Read everything until / : or terminate
00935     badHostName = false;
00936     x = buf[pos];
00937     while( (x != ':') && (x != '@') && (x != '/') && (x != '?') && (x != '#') )
00938     {
00939        if ((x == '\"') || (x == ';') || (x == '<'))
00940           badHostName = true;
00941        if (++pos == len)
00942           break;
00943        x = buf[pos];
00944     }
00945     if (badHostName)
00946        goto NodeErr;
00947     if ( pos == len )
00948     {
00949        setHost(decode(QString( buf + start, pos - start ), encoding_hint));
00950        goto NodeOk;
00951     }
00952     setHost(decode(QString( buf + start, pos - start ), encoding_hint));
00953   }
00954   x = buf[pos];
00955   if ( x == '/' || x == '#' || x == '?' )
00956     {
00957       start = pos;
00958       goto Node9;
00959     }
00960   else if ( x != ':' )
00961     goto NodeErr;
00962   pos++;
00963 
00964   // Node 8c: Accept at least one digit
00965   if ( pos == len )
00966     goto NodeErr;
00967   start = pos;
00968   if ( !isdigit( buf[pos++] ) )
00969     goto NodeErr;
00970 
00971   // Node 8d: Accept any amount of digits
00972   while( pos < len && isdigit( buf[pos] ) ) pos++;
00973   port = QString( buf + start, pos - start );
00974   m_iPort = port.toUShort();
00975   if ( pos == len )
00976     goto NodeOk;
00977   start = pos;
00978 
00979  Node9: // parse path until query or reference reached
00980 
00981   while( pos < len && buf[pos] != '#' && buf[pos]!='?' ) pos++;
00982 
00983   tmp = QString( buf + start, pos - start );
00984   //kdDebug(126)<<" setting encoded path to:"<<tmp<<endl;
00985   setEncodedPath( tmp, encoding_hint );
00986 
00987   if ( pos == len )
00988       goto NodeOk;
00989 
00990  //Node10: // parse query or reference depending on what comes first
00991   delim = (buf[pos++]=='#'?'?':'#');
00992 
00993   start = pos;
00994 
00995   while(pos < len && buf[pos]!=delim ) pos++;
00996 
00997   tmp = QString(buf + start, pos - start);
00998   if (delim=='#')
00999       _setQuery(tmp, encoding_hint);
01000   else
01001       m_strRef_encoded = tmp;
01002 
01003   if (pos == len)
01004       goto NodeOk;
01005 
01006  //Node11: // feed the rest into the remaining variable
01007   tmp = QString( buf + pos + 1, len - pos - 1);
01008   if (delim == '#')
01009       m_strRef_encoded = tmp;
01010   else
01011       _setQuery(tmp, encoding_hint);
01012 
01013  NodeOk:
01014   //kdDebug(126)<<"parsing finished. m_strProtocol="<<m_strProtocol<<" m_strHost="<<m_strHost<<" m_strPath="<<m_strPath<<endl;
01015   m_bIsMalformed = false; // Valid URL
01016 
01017   //kdDebug()<<"Prot="<<m_strProtocol<<"\nUser="<<m_strUser<<"\nPass="<<m_strPass<<"\nHost="<<m_strHost<<"\nPath="<<m_strPath<<"\nQuery="<<m_strQuery_encoded<<"\nRef="<<m_strRef_encoded<<"\nPort="<<m_iPort<<endl;
01018   if (m_strProtocol.isEmpty())
01019   {
01020     m_iUriMode = URL;
01021     m_strProtocol = fileProt;
01022   }
01023   return;
01024 
01025  NodeErr:
01026 //  kdDebug(126) << "KURL couldn't parse URL \"" << _url << "\"" << endl;
01027   reset();
01028   m_strProtocol = _url;
01029   m_iUriMode = Invalid;
01030 }
01031 
01032 KURL& KURL::operator=( const QString& _url )
01033 {
01034   reset();
01035   parse( _url );
01036 
01037   return *this;
01038 }
01039 
01040 KURL& KURL::operator=( const char * _url )
01041 {
01042   reset();
01043   parse( QString::fromLatin1(_url) );
01044 
01045   return *this;
01046 }
01047 
01048 #ifndef QT_NO_NETWORKPROTOCOL
01049 KURL& KURL::operator=( const QUrl & u )
01050 {
01051   m_strProtocol = u.protocol();
01052   m_iUriMode = Auto;
01053   m_strUser = u.user();
01054   m_strPass = u.password();
01055   m_strHost = u.host();
01056   m_strPath = u.path( false );
01057   m_strPath_encoded = QString::null;
01058   m_strQuery_encoded = u.query();
01059   m_strRef_encoded = u.ref();
01060   m_bIsMalformed = !u.isValid();
01061   m_iPort = u.port();
01062 
01063   return *this;
01064 }
01065 #endif
01066 
01067 KURL& KURL::operator=( const KURL& _u )
01068 {
01069   m_strProtocol = _u.m_strProtocol;
01070   m_strUser = _u.m_strUser;
01071   m_strPass = _u.m_strPass;
01072   m_strHost = _u.m_strHost;
01073   m_strPath = _u.m_strPath;
01074   m_strPath_encoded = _u.m_strPath_encoded;
01075   m_strQuery_encoded = _u.m_strQuery_encoded;
01076   m_strRef_encoded = _u.m_strRef_encoded;
01077   m_bIsMalformed = _u.m_bIsMalformed;
01078   m_iPort = _u.m_iPort;
01079   m_iUriMode = _u.m_iUriMode;
01080 
01081   return *this;
01082 }
01083 
01084 bool KURL::operator<( const KURL& _u) const
01085 {
01086   int i;
01087   if (!_u.isValid())
01088   {
01089      if (!isValid())
01090      {
01091         i = m_strProtocol.compare(_u.m_strProtocol);
01092         return (i < 0);
01093      }
01094      return false;
01095   }
01096   if (!isValid())
01097      return true;
01098 
01099   i = m_strProtocol.compare(_u.m_strProtocol);
01100   if (i) return (i < 0);
01101 
01102   i = m_strHost.compare(_u.m_strHost);
01103   if (i) return (i < 0);
01104 
01105   if (m_iPort != _u.m_iPort) return (m_iPort < _u.m_iPort);
01106 
01107   i = m_strPath.compare(_u.m_strPath);
01108   if (i) return (i < 0);
01109 
01110   i = m_strQuery_encoded.compare(_u.m_strQuery_encoded);
01111   if (i) return (i < 0);
01112 
01113   i = m_strRef_encoded.compare(_u.m_strRef_encoded);
01114   if (i) return (i < 0);
01115 
01116   i = m_strUser.compare(_u.m_strUser);
01117   if (i) return (i < 0);
01118 
01119   i = m_strPass.compare(_u.m_strPass);
01120   if (i) return (i < 0);
01121 
01122   return false;
01123 }
01124 
01125 bool KURL::operator==( const KURL& _u ) const
01126 {
01127   if ( !isValid() || !_u.isValid() )
01128     return false;
01129 
01130   if ( m_strProtocol == _u.m_strProtocol &&
01131        m_strUser == _u.m_strUser &&
01132        m_strPass == _u.m_strPass &&
01133        m_strHost == _u.m_strHost &&
01134        m_strPath == _u.m_strPath &&
01135        // The encoded path may be null, but the URLs are still equal (David)
01136        ( m_strPath_encoded.isNull() || _u.m_strPath_encoded.isNull() ||
01137          m_strPath_encoded == _u.m_strPath_encoded ) &&
01138        m_strQuery_encoded == _u.m_strQuery_encoded &&
01139        m_strRef_encoded == _u.m_strRef_encoded &&
01140        m_iPort == _u.m_iPort )
01141   {
01142     return true;
01143   }
01144 
01145   return false;
01146 }
01147 
01148 bool KURL::operator==( const QString& _u ) const
01149 {
01150   KURL u( _u );
01151   return ( *this == u );
01152 }
01153 
01154 bool KURL::cmp( const KURL &u, bool ignore_trailing ) const
01155 {
01156   return equals( u, ignore_trailing );
01157 }
01158 
01159 bool KURL::equals( const KURL &_u, bool ignore_trailing ) const
01160 {
01161   if ( !isValid() || !_u.isValid() )
01162     return false;
01163 
01164   if ( ignore_trailing )
01165   {
01166     QString path1 = path(1);
01167     QString path2 = _u.path(1);
01168     if ( path1 != path2 )
01169       return false;
01170 
01171     if ( m_strProtocol == _u.m_strProtocol &&
01172          m_strUser == _u.m_strUser &&
01173          m_strPass == _u.m_strPass &&
01174          m_strHost == _u.m_strHost &&
01175          m_strQuery_encoded == _u.m_strQuery_encoded &&
01176          m_strRef_encoded == _u.m_strRef_encoded &&
01177          m_iPort == _u.m_iPort )
01178       return true;
01179 
01180     return false;
01181   }
01182 
01183   return ( *this == _u );
01184 }
01185 
01186 bool KURL::isParentOf( const KURL& _u ) const
01187 {
01188   if ( !isValid() || !_u.isValid() )
01189     return false;
01190 
01191   if ( m_strProtocol == _u.m_strProtocol &&
01192        m_strUser == _u.m_strUser &&
01193        m_strPass == _u.m_strPass &&
01194        m_strHost == _u.m_strHost &&
01195        m_strQuery_encoded == _u.m_strQuery_encoded &&
01196        m_strRef_encoded == _u.m_strRef_encoded &&
01197        m_iPort == _u.m_iPort )
01198   {
01199     if ( path().isEmpty() || _u.path().isEmpty() )
01200         return false; // can't work with implicit paths
01201 
01202     QString p1( cleanpath( path(), true, false ) );
01203     if ( p1[p1.length()-1] != '/' )
01204         p1 += '/';
01205     QString p2( cleanpath( _u.path(), true, false ) );
01206     if ( p2[p2.length()-1] != '/' )
01207         p2 += '/';
01208 
01209     //kdDebug(126) << "p1=" << p1 << endl;
01210     //kdDebug(126) << "p2=" << p2 << endl;
01211     //kdDebug(126) << "p1.length()=" << p1.length() << endl;
01212     //kdDebug(126) << "p2.left(!$)=" << p2.left( p1.length() ) << endl;
01213     return p2.startsWith( p1 );
01214   }
01215   return false;
01216 }
01217 
01218 void KURL::setFileName( const QString& _txt )
01219 {
01220   m_strRef_encoded = QString::null;
01221   int i = 0;
01222   while( _txt[i] == '/' ) ++i;
01223   QString tmp;
01224   if ( i )
01225     tmp = _txt.mid( i );
01226   else
01227     tmp = _txt;
01228 
01229   QString path = m_strPath_encoded.isEmpty() ? m_strPath : m_strPath_encoded;
01230   if ( path.isEmpty() )
01231     path = "/";
01232   else
01233   {
01234     int lastSlash = path.findRev( '/' );
01235     if ( lastSlash == -1)
01236     {
01237       // The first character is not a '/' ???
01238       // This looks strange ...
01239       path = "/";
01240     }
01241     else if ( path.right(1) != "/" )
01242       path.truncate( lastSlash+1 ); // keep the "/"
01243   }
01244   if (m_strPath_encoded.isEmpty())
01245   {
01246      path += tmp;
01247      setPath( path );
01248   }
01249   else
01250   {
01251      path += encode_string(tmp);
01252      setEncodedPath( path );
01253   }
01254   cleanPath();
01255 }
01256 
01257 void KURL::cleanPath( bool cleanDirSeparator ) // taken from the old KURL
01258 {
01259   if (m_iUriMode != URL) return;
01260   m_strPath = cleanpath(m_strPath, cleanDirSeparator, false);
01261   // WABA: Is this safe when "/../" is encoded with %?
01262   m_strPath_encoded = cleanpath(m_strPath_encoded, cleanDirSeparator, true);
01263 }
01264 
01265 static QString trailingSlash( int _trailing, const QString &path )
01266 {
01267   QString result = path;
01268 
01269   if ( _trailing == 0 )
01270     return result;
01271   else if ( _trailing == 1 )
01272   {
01273     int len = result.length();
01274     if ( (len == 0) || (result[ len - 1 ] != '/') )
01275       result += "/";
01276     return result;
01277   }
01278   else if ( _trailing == -1 )
01279   {
01280     if ( result == "/" )
01281       return result;
01282     int len = result.length();
01283     while (len > 1 && result[ len - 1 ] == '/')
01284     {
01285       len--;
01286     }
01287     result.truncate( len );
01288     return result;
01289   }
01290   else {
01291     assert( 0 );
01292     return QString::null;
01293   }
01294 }
01295 
01296 void KURL::adjustPath( int _trailing )
01297 {
01298   if (!m_strPath_encoded.isEmpty())
01299   {
01300      m_strPath_encoded = trailingSlash( _trailing, m_strPath_encoded );
01301   }
01302   m_strPath = trailingSlash( _trailing, m_strPath );
01303 }
01304 
01305 
01306 QString KURL::encodedPathAndQuery( int _trailing, bool _no_empty_path, int encoding_hint ) const
01307 {
01308   QString tmp;
01309   if (!m_strPath_encoded.isEmpty() && encoding_hint == 0)
01310   {
01311      tmp = trailingSlash( _trailing, m_strPath_encoded );
01312   }
01313   else
01314   {
01315      tmp = path( _trailing );
01316      if ( _no_empty_path && tmp.isEmpty() )
01317         tmp = "/";
01318      if (m_iUriMode == Mailto)
01319      {
01320         tmp = encode( tmp, 2, encoding_hint );
01321      }
01322      else
01323      {
01324         tmp = encode( tmp, 1, encoding_hint );
01325      }
01326   }
01327 
01328   // TODO apply encoding_hint to the query
01329   if (!m_strQuery_encoded.isNull())
01330       tmp += '?' + m_strQuery_encoded;
01331   return tmp;
01332 }
01333 
01334 void KURL::setEncodedPath( const QString& _txt, int encoding_hint )
01335 {
01336   m_strPath_encoded = _txt;
01337 
01338   decode( m_strPath_encoded, m_strPath, m_strPath_encoded, encoding_hint );
01339   // Throw away encoding for local files, makes file-operations faster.
01340   if (m_strProtocol == fileProt)
01341      m_strPath_encoded = QString::null;
01342 
01343   if ( m_iUriMode == Auto )
01344     m_iUriMode = URL;
01345 }
01346 
01347 
01348 void KURL::setEncodedPathAndQuery( const QString& _txt, int encoding_hint )
01349 {
01350   int pos = _txt.find( '?' );
01351   if ( pos == -1 )
01352   {
01353     setEncodedPath(_txt, encoding_hint);
01354     m_strQuery_encoded = QString::null;
01355   }
01356   else
01357   {
01358     setEncodedPath(_txt.left( pos ), encoding_hint);
01359     _setQuery(_txt.right(_txt.length() - pos - 1), encoding_hint);
01360   }
01361 }
01362 
01363 QString KURL::path( int _trailing ) const
01364 {
01365   return trailingSlash( _trailing, path() );
01366 }
01367 
01368 bool KURL::isLocalFile() const
01369 {
01370   if ( (m_strProtocol != fileProt ) || hasSubURL() )
01371      return false;
01372 
01373   if (m_strHost.isEmpty() || (m_strHost == "localhost"))
01374      return true;
01375 
01376   char hostname[ 256 ];
01377   hostname[ 0 ] = '\0';
01378   if (!gethostname( hostname, 255 ))
01379      hostname[sizeof(hostname)-1] = '\0';
01380 
01381   for(char *p = hostname; *p; p++)
01382      *p = tolower(*p);
01383 
01384   return (m_strHost == hostname);
01385 }
01386 
01387 void KURL::setFileEncoding(const QString &encoding)
01388 {
01389   if (!isLocalFile())
01390      return;
01391 
01392   QString q = query();
01393 
01394   if (!q.isEmpty() && (q[0] == '?'))
01395      q = q.mid(1);
01396 
01397   QStringList args = QStringList::split('&', q);
01398   for(QStringList::Iterator it = args.begin();
01399       it != args.end();)
01400   {
01401       QString s = decode_string(*it);
01402       if (s.startsWith("charset="))
01403          it = args.erase(it);
01404       else
01405          ++it;
01406   }
01407   if (!encoding.isEmpty())
01408      args.append("charset="+encode_string(encoding));
01409 
01410   if (args.isEmpty())
01411      _setQuery(QString::null);
01412   else
01413      _setQuery(args.join("&"));
01414 }
01415 
01416 QString KURL::fileEncoding() const
01417 {
01418   if (!isLocalFile())
01419      return QString::null;
01420 
01421   QString q = query();
01422 
01423   if (q.isEmpty())
01424      return QString::null;
01425 
01426   if (q[0] == '?')
01427      q = q.mid(1);
01428 
01429   QStringList args = QStringList::split('&', q);
01430   for(QStringList::ConstIterator it = args.begin();
01431       it != args.end();
01432       ++it)
01433   {
01434       QString s = decode_string(*it);
01435       if (s.startsWith("charset="))
01436          return s.mid(8);
01437   }
01438   return QString::null;
01439 }
01440 
01441 bool KURL::hasSubURL() const
01442 {
01443   if ( m_strProtocol.isEmpty() || m_bIsMalformed )
01444     return false;
01445   if (m_strRef_encoded.isEmpty())
01446      return false;
01447   if (m_strRef_encoded.startsWith("gzip:"))
01448      return true;
01449   if (m_strRef_encoded.startsWith("bzip:"))
01450      return true;
01451   if (m_strRef_encoded.startsWith("bzip2:"))
01452      return true;
01453   if (m_strRef_encoded.startsWith("tar:"))
01454      return true;
01455   if (m_strRef_encoded.startsWith("ar:"))
01456      return true;
01457   if (m_strRef_encoded.startsWith("zip:"))
01458      return true;
01459   if ( m_strProtocol == "error" ) // anything that starts with error: has suburls
01460      return true;
01461   return false;
01462 }
01463 
01464 QString KURL::url( int _trailing, int encoding_hint ) const
01465 {
01466   if( m_bIsMalformed )
01467   {
01468     // Return the whole url even when the url is
01469     // malformed.  Under such conditions the url
01470     // is stored in m_strProtocol.
01471     return m_strProtocol;
01472   }
01473 
01474   QString u = m_strProtocol;
01475   if (!u.isEmpty())
01476     u += ":";
01477 
01478   if ( hasHost() || (m_strProtocol == fileProt) )
01479   {
01480     u += "//";
01481     if ( hasUser() )
01482     {
01483       u += encode(m_strUser, 0, encoding_hint);
01484       if ( hasPass() )
01485       {
01486         u += ":";
01487         u += encode(m_strPass, 0, encoding_hint);
01488       }
01489       u += "@";
01490     }
01491     if ( m_iUriMode == URL )
01492     {
01493       bool IPv6 = (m_strHost.find(':') != -1);
01494       if (IPv6)
01495         u += '[' + m_strHost + ']';
01496       else
01497         u += encodeHost(m_strHost, true, encoding_hint);
01498       if ( m_iPort != 0 ) {
01499         QString buffer;
01500         buffer.sprintf( ":%u", m_iPort );
01501         u += buffer;
01502       }
01503     }
01504     else
01505     {
01506       u += m_strHost;
01507     }
01508   }
01509 
01510   if ( m_iUriMode == URL || m_iUriMode == Mailto )
01511     u += encodedPathAndQuery( _trailing, false, encoding_hint );
01512   else
01513     u += encode( m_strPath, 21, encoding_hint, true );
01514 
01515   if ( hasRef() )
01516   {
01517     u += "#";
01518     u += m_strRef_encoded;
01519   }
01520 
01521   return u;
01522 }
01523 
01524 QString KURL::prettyURL( int _trailing ) const
01525 {
01526   if( m_bIsMalformed )
01527   {
01528     // Return the whole url even when the url is
01529     // malformed.  Under such conditions the url
01530     // is stored in m_strProtocol.
01531     return m_strProtocol;
01532   }
01533 
01534   QString u = m_strProtocol;
01535   if (!u.isEmpty())
01536      u += ":";
01537 
01538   if ( hasHost() || (m_strProtocol == fileProt) )
01539   {
01540     u += "//";
01541     if ( hasUser() )
01542     {
01543       u += encode(m_strUser, 0, 0);
01544       // Don't show password!
01545       u += "@";
01546     }
01547     if ( m_iUriMode == URL )
01548     {
01549     bool IPv6 = (m_strHost.find(':') != -1);
01550     if (IPv6)
01551     {
01552        u += '[' + m_strHost + ']';
01553     }
01554     else
01555     {
01556        u += lazy_encode(m_strHost);
01557     }
01558     }
01559     else
01560     {
01561       u += lazy_encode(m_strHost);
01562     }
01563     if ( m_iPort != 0 ) {
01564       QString buffer;
01565       buffer.sprintf( ":%u", m_iPort );
01566       u += buffer;
01567     }
01568   }
01569 
01570   if (m_iUriMode == Mailto)
01571   {
01572      u += lazy_encode( m_strPath, false );
01573   }
01574   else
01575   {
01576      u += trailingSlash( _trailing, lazy_encode( m_strPath ) );
01577   }
01578 
01579   if (!m_strQuery_encoded.isNull())
01580       u += '?' + m_strQuery_encoded;
01581 
01582   if ( hasRef() )
01583   {
01584     u += "#";
01585     u += m_strRef_encoded;
01586   }
01587 
01588   return u;
01589 }
01590 
01591 QString KURL::prettyURL( int _trailing, AdjustementFlags _flags) const
01592 {
01593   QString u = prettyURL(_trailing);
01594   if (_flags & StripFileProtocol && u.startsWith("file://")) {
01595     u.remove(0, 7);
01596 #ifdef Q_WS_WIN
01597     return QDir::convertSeparators(u);
01598 #endif
01599   }
01600   return u;
01601 }
01602 
01603 QString KURL::pathOrURL() const
01604 {
01605   if ( isLocalFile() && m_strRef_encoded.isNull() && m_strQuery_encoded.isNull() ) {
01606     return path();
01607   } else {
01608     return prettyURL();
01609   }
01610 }
01611 
01612 QString KURL::htmlURL() const
01613 {
01614   return QStyleSheet::escape(prettyURL());
01615 }
01616 
01617 KURL::List KURL::split( const KURL& _url )
01618 {
01619   QString ref;
01620   KURL::List lst;
01621   KURL url = _url;
01622 
01623   while(true)
01624   {
01625      KURL u = url;
01626      u.m_strRef_encoded = QString::null;
01627      lst.append(u);
01628      if (url.hasSubURL())
01629      {
01630         url = KURL(url.m_strRef_encoded);
01631      }
01632      else
01633      {
01634         ref = url.m_strRef_encoded;
01635         break;
01636      }
01637   }
01638 
01639   // Set HTML ref in all URLs.
01640   KURL::List::Iterator it;
01641   for( it = lst.begin() ; it != lst.end(); ++it )
01642   {
01643      (*it).m_strRef_encoded = ref;
01644   }
01645 
01646   return lst;
01647 }
01648 
01649 KURL::List KURL::split( const QString& _url )
01650 {
01651   return split(KURL(_url));
01652 }
01653 
01654 KURL KURL::join( const KURL::List & lst )
01655 {
01656   if (lst.isEmpty()) return KURL();
01657   KURL tmp;
01658 
01659   KURL::List::ConstIterator first = lst.fromLast();
01660   for( KURL::List::ConstIterator it = first; it != lst.end(); --it )
01661   {
01662      KURL u(*it);
01663      if (it != first)
01664      {
01665         if (!u.m_strRef_encoded) u.m_strRef_encoded = tmp.url();
01666         else u.m_strRef_encoded += "#" + tmp.url(); // Support more than one suburl thingy
01667      }
01668      tmp = u;
01669   }
01670 
01671   return tmp;
01672 }
01673 
01674 QString KURL::fileName( bool _strip_trailing_slash ) const
01675 {
01676   QString fname;
01677   if (hasSubURL()) { // If we have a suburl, then return the filename from there
01678     KURL::List list = KURL::split(*this);
01679     KURL::List::Iterator it = list.fromLast();
01680     return (*it).fileName(_strip_trailing_slash);
01681   }
01682   const QString &path = m_strPath;
01683 
01684   int len = path.length();
01685   if ( len == 0 )
01686     return fname;
01687 
01688   if ( _strip_trailing_slash )
01689   {
01690     while ( len >= 1 && path[ len - 1 ] == '/' )
01691       len--;
01692   }
01693   else if ( path[ len - 1 ] == '/' )
01694     return fname;
01695 
01696   // Does the path only consist of '/' characters ?
01697   if ( len == 1 && path[ 0 ] == '/' )
01698     return fname;
01699 
01700   // Skip last n slashes
01701   int n = 1;
01702   if (!m_strPath_encoded.isEmpty())
01703   {
01704      // This is hairy, we need the last unencoded slash.
01705      // Count in the encoded string how many encoded slashes follow the last
01706      // unencoded one.
01707      int i = m_strPath_encoded.findRev( '/', len - 1 );
01708      QString fileName_encoded = m_strPath_encoded.mid(i+1);
01709      n += fileName_encoded.contains("%2f", false);
01710   }
01711   int i = len;
01712   do {
01713     i = path.findRev( '/', i - 1 );
01714   }
01715   while (--n && (i > 0));
01716 
01717   // If ( i == -1 ) => the first character is not a '/'
01718   // So it's some URL like file:blah.tgz, return the whole path
01719   if ( i == -1 ) {
01720     if ( len == (int)path.length() )
01721       fname = path;
01722     else
01723       // Might get here if _strip_trailing_slash is true
01724       fname = path.left( len );
01725   }
01726   else
01727   {
01728      fname = path.mid( i + 1, len - i - 1 ); // TO CHECK
01729   }
01730   return fname;
01731 }
01732 
01733 void KURL::addPath( const QString& _txt )
01734 {
01735   if (hasSubURL())
01736   {
01737      KURL::List lst = split( *this );
01738      KURL &u = lst.last();
01739      u.addPath(_txt);
01740      *this = join( lst );
01741      return;
01742   }
01743 
01744   m_strPath_encoded = QString::null;
01745 
01746   if ( _txt.isEmpty() )
01747     return;
01748 
01749   int i = 0;
01750   int len = m_strPath.length();
01751   // Add the trailing '/' if it is missing
01752   if ( _txt[0] != '/' && ( len == 0 || m_strPath[ len - 1 ] != '/' ) )
01753     m_strPath += "/";
01754 
01755   // No double '/' characters
01756   i = 0;
01757   if ( len != 0 && m_strPath[ len - 1 ] == '/' )
01758   {
01759     while( _txt[i] == '/' )
01760       ++i;
01761   }
01762 
01763   m_strPath += _txt.mid( i );
01764 }
01765 
01766 QString KURL::directory( bool _strip_trailing_slash_from_result,
01767                          bool _ignore_trailing_slash_in_path ) const
01768 {
01769   QString result = m_strPath_encoded.isEmpty() ? m_strPath : m_strPath_encoded;
01770   if ( _ignore_trailing_slash_in_path )
01771     result = trailingSlash( -1, result );
01772 
01773   if ( result.isEmpty() || result == "/" )
01774     return result;
01775 
01776   int i = result.findRev( "/" );
01777   // If ( i == -1 ) => the first character is not a '/'
01778   // So it's some URL like file:blah.tgz, with no path
01779   if ( i == -1 )
01780     return QString::null;
01781 
01782   if ( i == 0 )
01783   {
01784     result = "/";
01785     return result;
01786   }
01787 
01788   if ( _strip_trailing_slash_from_result )
01789     result = result.left( i );
01790   else
01791     result = result.left( i + 1 );
01792 
01793   if (!m_strPath_encoded.isEmpty())
01794     result = decode(result);
01795 
01796   return result;
01797 }
01798 
01799 
01800 bool KURL::cd( const QString& _dir )
01801 {
01802   if ( _dir.isEmpty() || m_bIsMalformed )
01803     return false;
01804 
01805   if (hasSubURL())
01806   {
01807      KURL::List lst = split( *this );
01808      KURL &u = lst.last();
01809      u.cd(_dir);
01810      *this = join( lst );
01811      return true;
01812   }
01813 
01814   // absolute path ?
01815   if ( _dir[0] == '/' )
01816   {
01817     m_strPath_encoded = QString::null;
01818     m_strPath = _dir;
01819     setHTMLRef( QString::null );
01820     m_strQuery_encoded = QString::null;
01821     return true;
01822   }
01823 
01824   // Users home directory on the local disk ?
01825   if ( ( _dir[0] == '~' ) && ( m_strProtocol == fileProt ))
01826   {
01827     m_strPath_encoded = QString::null;
01828     m_strPath = QDir::homeDirPath();
01829     m_strPath += "/";
01830     m_strPath += _dir.right(m_strPath.length() - 1);
01831     setHTMLRef( QString::null );
01832     m_strQuery_encoded = QString::null;
01833     return true;
01834   }
01835 
01836   // relative path
01837   // we always work on the past of the first url.
01838   // Sub URLs are not touched.
01839 
01840   // append '/' if necessary
01841   QString p = path(1);
01842   p += _dir;
01843   p = cleanpath( p, true, false );
01844   setPath( p );
01845 
01846   setHTMLRef( QString::null );
01847   m_strQuery_encoded = QString::null;
01848 
01849   return true;
01850 }
01851 
01852 KURL KURL::upURL( ) const
01853 {
01854   if (!query().isEmpty())
01855   {
01856      KURL u(*this);
01857      u._setQuery(QString::null);
01858      return u;
01859   };
01860 
01861   if (!hasSubURL())
01862   {
01863      KURL u(*this);
01864 
01865      u.cd("../");
01866 
01867      return u;
01868   }
01869 
01870   // We have a subURL.
01871   KURL::List lst = split( *this );
01872   if (lst.isEmpty())
01873       return KURL(); // Huh?
01874   while (true)
01875   {
01876      KURL &u = lst.last();
01877      QString old = u.path();
01878      u.cd("../");
01879      if (u.path() != old)
01880          break; // Finshed.
01881      if (lst.count() == 1)
01882          break; // Finished.
01883      lst.remove(lst.fromLast());
01884   }
01885   return join( lst );
01886 }
01887 
01888 QString KURL::htmlRef() const
01889 {
01890   if ( !hasSubURL() )
01891   {
01892     return decode( ref() );
01893   }
01894 
01895   List lst = split( *this );
01896   return decode( (*lst.begin()).ref() );
01897 }
01898 
01899 QString KURL::encodedHtmlRef() const
01900 {
01901   if ( !hasSubURL() )
01902   {
01903     return ref();
01904   }
01905 
01906   List lst = split( *this );
01907   return (*lst.begin()).ref();
01908 }
01909 
01910 void KURL::setHTMLRef( const QString& _ref )
01911 {
01912   if ( !hasSubURL() )
01913   {
01914     m_strRef_encoded = encode( _ref, 0, 0 /*?*/);
01915     return;
01916   }
01917 
01918   List lst = split( *this );
01919 
01920   (*lst.begin()).setRef( encode( _ref, 0, 0 /*?*/) );
01921 
01922   *this = join( lst );
01923 }
01924 
01925 bool KURL::hasHTMLRef() const
01926 {
01927   if ( !hasSubURL() )
01928   {
01929     return hasRef();
01930   }
01931 
01932   List lst = split( *this );
01933   return (*lst.begin()).hasRef();
01934 }
01935 
01936 void
01937 KURL::setProtocol( const QString& _txt )
01938 {
01939    m_strProtocol = _txt;
01940    if ( m_iUriMode == Auto ) m_iUriMode = uriModeForProtocol( m_strProtocol );
01941    m_bIsMalformed = false;
01942 }
01943 
01944 void
01945 KURL::setUser( const QString& _txt )
01946 {
01947    if ( _txt.isEmpty() )
01948      m_strUser = QString::null;
01949    else
01950      m_strUser = _txt;
01951 }
01952 
01953 void
01954 KURL::setPass( const QString& _txt )
01955 {
01956    if ( _txt.isEmpty() )
01957      m_strPass = QString::null;
01958    else
01959      m_strPass = _txt;
01960 }
01961 
01962 void
01963 KURL::setHost( const QString& _txt )
01964 {
01965   if ( m_iUriMode == Auto )
01966     m_iUriMode = URL;
01967   switch ( m_iUriMode )
01968   {
01969   case URL:
01970 #ifndef KDE_QT_ONLY
01971    m_strHost = KIDNA::toUnicode(_txt);
01972    if (m_strHost.isEmpty())
01973       m_strHost = _txt.lower(); // Probably an invalid hostname, but...
01974 #else
01975    m_strHost = _txt.lower();
01976 #endif
01977     break;
01978   default:
01979     m_strHost = _txt;
01980     break;
01981   }
01982 }
01983 
01984 void
01985 KURL::setPort( unsigned short int _p )
01986 {
01987    m_iPort = _p;
01988 }
01989 
01990 void KURL::setPath( const QString & path )
01991 {
01992   if (isEmpty())
01993     m_bIsMalformed = false;
01994   if (m_strProtocol.isEmpty())
01995   {
01996     m_strProtocol = fileProt;
01997   }
01998   m_strPath = path;
01999   m_strPath_encoded = QString::null;
02000   if ( m_iUriMode == Auto )
02001     m_iUriMode = URL;
02002 }
02003 
02004 void KURL::setDirectory( const QString &dir)
02005 {
02006   if ( dir.endsWith("/"))
02007      setPath(dir);
02008   else
02009      setPath(dir+"/");
02010 }
02011 
02012 void KURL::setQuery( const QString &_txt, int encoding_hint)
02013 {
02014    if (_txt[0] == '?')
02015       _setQuery( _txt.length() > 1 ? _txt.mid(1) : "" /*empty, not null*/, encoding_hint );
02016    else
02017       _setQuery( _txt, encoding_hint );
02018 }
02019 
02020 // This is a private function that expects a query without '?'
02021 void KURL::_setQuery( const QString &_txt, int encoding_hint)
02022 {
02023    m_strQuery_encoded = _txt;
02024    if (!_txt.length())
02025       return;
02026 
02027    int l = m_strQuery_encoded.length();
02028    int i = 0;
02029    QString result;
02030    while (i < l)
02031    {
02032       int s = i;
02033       // Re-encode. Break encoded string up according to the reserved
02034       // characters '&:;=/?' and re-encode part by part.
02035       while(i < l)
02036       {
02037          char c = m_strQuery_encoded[i].latin1();
02038          if ((c == '&') || (c == ':') || (c == ';') ||
02039              (c == '=') || (c == '/') || (c == '?'))
02040             break;
02041          i++;
02042       }
02043       if (i > s)
02044       {
02045          QString tmp = m_strQuery_encoded.mid(s, i-s);
02046          QString newTmp;
02047          decode( tmp, newTmp, tmp, encoding_hint, false );
02048          result += tmp;
02049       }
02050       if (i < l)
02051       {
02052          result += m_strQuery_encoded[i];
02053          i++;
02054       }
02055    }
02056    m_strQuery_encoded = result;
02057 }
02058 
02059 QString KURL::query() const
02060 {
02061     if (m_strQuery_encoded.isNull())
02062         return QString::null;
02063     return '?'+m_strQuery_encoded;
02064 }
02065 
02066 QString KURL::decode_string(const QString &str, int encoding_hint)
02067 {
02068    return decode(str, encoding_hint);
02069 }
02070 
02071 QString KURL::encode_string(const QString &str, int encoding_hint)
02072 {
02073    return encode(str, 1, encoding_hint);
02074 }
02075 
02076 QString KURL::encode_string_no_slash(const QString &str, int encoding_hint)
02077 {
02078    return encode(str, 0, encoding_hint);
02079 }
02080 
02081 bool urlcmp( const QString& _url1, const QString& _url2 )
02082 {
02083   // Both empty ?
02084   if ( _url1.isEmpty() && _url2.isEmpty() )
02085     return true;
02086   // Only one empty ?
02087   if ( _url1.isEmpty() || _url2.isEmpty() )
02088     return false;
02089 
02090   KURL::List list1 = KURL::split( _url1 );
02091   KURL::List list2 = KURL::split( _url2 );
02092 
02093   // Malformed ?
02094   if ( list1.isEmpty() || list2.isEmpty() )
02095     return false;
02096 
02097   return ( list1 == list2 );
02098 }
02099 
02100 bool urlcmp( const QString& _url1, const QString& _url2, bool _ignore_trailing, bool _ignore_ref )
02101 {
02102   // Both empty ?
02103   if ( _url1.isEmpty() && _url2.isEmpty() )
02104     return true;
02105   // Only one empty ?
02106   if ( _url1.isEmpty() || _url2.isEmpty() )
02107     return false;
02108 
02109   KURL::List list1 = KURL::split( _url1 );
02110   KURL::List list2 = KURL::split( _url2 );
02111 
02112   // Malformed ?
02113   if ( list1.isEmpty() || list2.isEmpty() )
02114     return false;
02115 
02116   unsigned int size = list1.count();
02117   if ( list2.count() != size )
02118     return false;
02119 
02120   if ( _ignore_ref )
02121   {
02122     (*list1.begin()).setRef(QString::null);
02123     (*list2.begin()).setRef(QString::null);
02124   }
02125 
02126   KURL::List::Iterator it1 = list1.begin();
02127   KURL::List::Iterator it2 = list2.begin();
02128   for( ; it1 != list1.end() ; ++it1, ++it2 )
02129     if ( !(*it1).equals( *it2, _ignore_trailing ) )
02130       return false;
02131 
02132   return true;
02133 }
02134 
02135 QMap< QString, QString > KURL::queryItems( int options ) const {
02136   return queryItems(options, 0);
02137 }
02138 
02139 QMap< QString, QString > KURL::queryItems( int options, int encoding_hint ) const {
02140   if ( m_strQuery_encoded.isEmpty() )
02141     return QMap<QString,QString>();
02142 
02143   QMap< QString, QString > result;
02144   QStringList items = QStringList::split( '&', m_strQuery_encoded );
02145   for ( QStringList::const_iterator it = items.begin() ; it != items.end() ; ++it ) {
02146     int equal_pos = (*it).find( '=' );
02147     if ( equal_pos > 0 ) { // = is not the first char...
02148       QString name = (*it).left( equal_pos );
02149       if ( options & CaseInsensitiveKeys )
02150     name = name.lower();
02151       QString value = (*it).mid( equal_pos + 1 );
02152       if ( value.isEmpty() )
02153     result.insert( name, QString::fromLatin1("") );
02154       else {
02155     // ### why is decoding name not necessary?
02156     value.replace( '+', ' ' ); // + in queries means space
02157     result.insert( name, decode_string( value, encoding_hint ) );
02158       }
02159     } else if ( equal_pos < 0 ) { // no =
02160       QString name = (*it);
02161       if ( options & CaseInsensitiveKeys )
02162     name = name.lower();
02163       result.insert( name, QString::null );
02164     }
02165   }
02166 
02167   return result;
02168 }
02169 
02170 QString KURL::queryItem( const QString& _item ) const
02171 {
02172   return queryItem( _item, 0 );
02173 }
02174 
02175 QString KURL::queryItem( const QString& _item, int encoding_hint ) const
02176 {
02177   QString item = _item + '=';
02178   if ( m_strQuery_encoded.length() <= 1 )
02179     return QString::null;
02180 
02181   QStringList items = QStringList::split( '&', m_strQuery_encoded );
02182   unsigned int _len = item.length();
02183   for ( QStringList::ConstIterator it = items.begin(); it != items.end(); ++it )
02184   {
02185     if ( (*it).startsWith( item ) )
02186     {
02187       if ( (*it).length() > _len )
02188       {
02189         QString str = (*it).mid( _len );
02190         str.replace( '+', ' ' ); // + in queries means space.
02191         return decode_string( str, encoding_hint );
02192       }
02193       else // empty value
02194         return QString::fromLatin1("");
02195     }
02196   }
02197 
02198   return QString::null;
02199 }
02200 
02201 void KURL::removeQueryItem( const QString& _item )
02202 {
02203   QString item = _item + '=';
02204   if ( m_strQuery_encoded.length() <= 1 )
02205     return;
02206 
02207   QStringList items = QStringList::split( '&', m_strQuery_encoded );
02208   for ( QStringList::Iterator it = items.begin(); it != items.end(); )
02209   {
02210     if ( (*it).startsWith( item ) || (*it == _item) )
02211     {
02212       QStringList::Iterator deleteIt = it;
02213       ++it;
02214       items.remove(deleteIt);
02215     }
02216     else
02217     {
02218        ++it;
02219     }
02220   }
02221   m_strQuery_encoded = items.join( "&" );
02222 }
02223 
02224 void KURL::addQueryItem( const QString& _item, const QString& _value, int encoding_hint )
02225 {
02226   QString item = _item + '=';
02227   QString value = encode( _value, 0, encoding_hint );
02228 
02229   if (!m_strQuery_encoded.isEmpty())
02230      m_strQuery_encoded += '&';
02231   m_strQuery_encoded += item + value;
02232 }
02233 
02234 // static
02235 KURL KURL::fromPathOrURL( const QString& text )
02236 {
02237     if ( text.isEmpty() )
02238         return KURL();
02239 
02240     KURL url;
02241     if (!QDir::isRelativePath(text))
02242         url.setPath( text );
02243     else
02244         url = text;
02245 
02246     return url;
02247 }
02248 
02249 static QString _relativePath(const QString &base_dir, const QString &path, bool &isParent)
02250 {
02251    QString _base_dir(QDir::cleanDirPath(base_dir));
02252    QString _path(QDir::cleanDirPath(path.isEmpty() || (path[0] != '/') ? _base_dir+"/"+path : path));
02253 
02254    if (_base_dir.isEmpty())
02255       return _path;
02256 
02257    if (_base_dir[_base_dir.length()-1] != '/')
02258       _base_dir.append('/');
02259 
02260    QStringList list1 = QStringList::split('/', _base_dir);
02261    QStringList list2 = QStringList::split('/', _path);
02262 
02263    // Find where they meet
02264    uint level = 0;
02265    uint maxLevel = QMIN(list1.count(), list2.count());
02266    while((level < maxLevel) && (list1[level] == list2[level])) level++;
02267 
02268    QString result;
02269    // Need to go down out of the first path to the common branch.
02270    for(uint i = level; i < list1.count(); i++)
02271       result.append("../");
02272 
02273    // Now up up from the common branch to the second path.
02274    for(uint i = level; i < list2.count(); i++)
02275       result.append(list2[i]).append("/");
02276 
02277    if ((level < list2.count()) && (path[path.length()-1] != '/'))
02278       result.truncate(result.length()-1);
02279 
02280    isParent = (level == list1.count());
02281 
02282    return result;
02283 }
02284 
02285 QString KURL::relativePath(const QString &base_dir, const QString &path, bool *isParent)
02286 {
02287    bool parent = false;
02288    QString result = _relativePath(base_dir, path, parent);
02289    if (parent)
02290       result.prepend("./");
02291 
02292    if (isParent)
02293       *isParent = parent;
02294 
02295    return result;
02296 }
02297 
02298 
02299 QString KURL::relativeURL(const KURL &base_url, const KURL &url, int encoding_hint)
02300 {
02301    if ((url.protocol() != base_url.protocol()) ||
02302        (url.host() != base_url.host()) ||
02303        (url.port() && url.port() != base_url.port()) ||
02304        (url.hasUser() && url.user() != base_url.user()) ||
02305        (url.hasPass() && url.pass() != base_url.pass()))
02306    {
02307       return url.url(0, encoding_hint);
02308    }
02309 
02310    QString relURL;
02311 
02312    if ((base_url.path() != url.path()) || (base_url.query() != url.query()))
02313    {
02314       bool dummy;
02315       QString basePath = base_url.directory(false, false);
02316       relURL = encode( _relativePath(basePath, url.path(), dummy), 1, encoding_hint);
02317       relURL += url.query();
02318    }
02319 
02320    if ( url.hasRef() )
02321    {
02322       relURL += "#";
02323       relURL += url.ref();
02324    }
02325 
02326    if ( relURL.isEmpty() )
02327       return "./";
02328 
02329    return relURL;
02330 }
02331 
02332 int KURL::uriMode() const
02333 {
02334   return m_iUriMode;
02335 }
02336 
02337 KURL::URIMode KURL::uriModeForProtocol(const QString& protocol)
02338 {
02339 #ifndef KDE_QT_ONLY
02340     KURL::URIMode mode = Auto;
02341     if (protocol == fileProt)
02342         return URL;
02343     if (KGlobal::_instance)
02344         mode = KProtocolInfo::uriParseMode(protocol);
02345     if (mode == Auto ) {
02346 #else
02347         KURL::URIMode mode = Auto;
02348 #endif
02349     if ( protocol == "ed2k" || protocol == "sig2dat" || protocol == "slsk" || protocol == "data" ) mode = RawURI;
02350     else if ( protocol == "mailto" ) mode = Mailto;
02351     else mode = URL;
02352 #ifndef KDE_QT_ONLY
02353     }
02354 #endif
02355     return mode;
02356 }

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