kmail/util.cpp

   1 /*******************************************************************************
   2 **
   3 ** Filename   : util
   4 ** Created on : 03 April, 2005
   5 ** Copyright  : (c) 2005 Till Adam
   6 ** Email      : <adam@kde.org>
   7 **
   8 *******************************************************************************/
   9
  10 /*******************************************************************************
  11 **
  12 **   This program is free software; you can redistribute it and/or modify
  13 **   it under the terms of the GNU General Public License as published by
  14 **   the Free Software Foundation; either version 2 of the License, or
  15 **   (at your option) any later version.
  16 **
  17 **   It is distributed in the hope that it will be useful, but
  18 **   WITHOUT ANY WARRANTY; without even the implied warranty of
  19 **   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20 **   General Public License for more details.
  21 **
  22 **   You should have received a copy of the GNU General Public License
  23 **   along with this program; if not, write to the Free Software
  24 **   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  25 **
  26 **   In addition, as a special exception, the copyright holders give
  27 **   permission to link the code of this program with any edition of
  28 **   the Qt library by Trolltech AS, Norway (or with modified versions
  29 **   of Qt that use the same license as Qt), and distribute linked
  30 **   combinations including the two.  You must obey the GNU General
  31 **   Public License in all respects for all of the code used other than
  32 **   Qt.  If you modify this file, you may extend this exception to
  33 **   your version of the file, but you are not obligated to do so.  If
  34 **   you do not wish to do so, delete this exception statement from
  35 **   your version.
  36 **
  37 *******************************************************************************/
  38
  39
  40 #include "util.h"
  41
  42 #include <stdlib.h>
  43 #include <mimelib/string.h>
  44
  45 void KMail::Util::reconnectSignalSlotPair( QObject *src, const char *signal, QObject *dst, const char *slot )
  46 {
  47   QObject::disconnect( src, signal, dst, slot );
  48   QObject::connect( src, signal, dst, slot );
  49 }
  50
  51
  52 size_t KMail::Util::crlf2lf( char* str, const size_t strLen )
  53 {
  54     if ( !str || strLen == 0 )
  55         return 0;
  56
  57     const char* source = str;
  58     const char* sourceEnd = source + strLen;
  59
  60     // search the first occurrence of "\r\n"
  61     for ( ; source < sourceEnd - 1; ++source ) {
  62         if ( *source == '\r' && *( source + 1 ) == '\n' )
  63             break;
  64     }
  65
  66     if ( source == sourceEnd - 1 ) {
  67         // no "\r\n" found
  68         return strLen;
  69     }
  70
  71     // replace all occurrences of "\r\n" with "\n" (in place)
  72     char* target = const_cast<char*>( source ); // target points to '\r'
  73     ++source; // source points to '\n'
  74     for ( ; source < sourceEnd; ++source ) {
  75         if ( *source != '\r' || *( source + 1 ) != '\n' )
  76             * target++ = *source;
  77     }
  78     *target = '\0'; // terminate result
  79     return target - str;
  80 }
  81
  82 QByteArray KMail::Util::lf2crlf( const QByteArray & src )
  83 {
  84     QByteArray result;
  85     result.resize( 2*src.size() );  // maximal possible length
  86
  87     QByteArray::ConstIterator s = src.begin();
  88     QByteArray::Iterator d = result.begin();
  89   // we use cPrev to make sure we insert '\r' only there where it is missing
  90     char cPrev = '?';
  91     const char* end = src.end();
  92     while ( s != end ) {
  93         if ( ('\n' == *s) && ('\r' != cPrev) )
  94             *d++ = '\r';
  95         cPrev = *s;
  96         *d++ = *s++;
  97     }
  98     result.truncate( d - result.begin() );
  99     return result;
 100 }
 101
 102 QByteArray KMail::Util::ByteArray( const DwString& str )
 103 {
 104   const int strLen = str.size();
 105   QByteArray arr;
 106   arr.resize( strLen );
 107   memcpy( arr.data(), str.data(), strLen );
 108   return arr;
 109 }
 110
 111 DwString KMail::Util::dwString( const QByteArray& str )
 112 {
 113   if ( !str.data() ) // DwString doesn't like char*=0
 114     return DwString();
 115   return DwString( str.data(), str.size() );
 116 }
 117
 118 bool KMail::Util::checkOverwrite( const KUrl &url, QWidget *w )
 119 {
 120   if ( KIO::NetAccess::exists( url, KIO::NetAccess::DestinationSide, w ) ) {
 121     if ( KMessageBox::Cancel == KMessageBox::warningContinueCancel(
 122          w,
 123          i18n( "A file named \"%1\" already exists. "
 124              "Are you sure you want to overwrite it?", url.prettyUrl() ),
 125              i18n( "Overwrite File?" ),
 126                    KStandardGuiItem::overwrite() ) )
 127       return false;
 128   }
 129   return true;
 130 }
 131
 132 #ifdef Q_WS_MACX
 133 #include <QDesktopServices>
 134 #endif
 135
 136 bool KMail::Util::handleUrlOnMac( const KUrl& url )
 137 {
 138 #ifdef Q_WS_MACX
 139   QDesktopServices::openUrl( url );
 140   return true;
 141 #else
 142   Q_UNUSED( url );
 143   return false;
 144 #endif
 145 }
 146
 147
 148