apps/nsplugins/kcm_nsplugins.cpp

   1 /*
   2   Copyright (c) 2003 Dirk Mueller <mueller@kde.org>
   3
   4   This program is free software; you can redistribute it and/or modify
   5   it under the terms of the GNU General Public License as published by
   6   the Free Software Foundation; either version 2 of the License, or
   7   (at your option) any later version.
   8
   9   This program is distributed in the hope that it will be useful,
  10   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12   GNU General Public License for more details.
  13
  14   You should have received a copy of the GNU General Public License
  15   along with this program; if not, write to the Free Software
  16   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  17 */
  18
  19 #include <stdlib.h>
  20 #include <stdio.h>
  21 #include <unistd.h>
  22
  23 #include <QRegExp>
  24 #include <QLayout>
  25 #include <kstandarddirs.h>
  26 #include <klocale.h>
  27 #include <ksharedconfig.h>
  28 #include <kiconloader.h>
  29 #include <kfiledialog.h>
  30 #include <kurlrequester.h>
  31 #include <kdebug.h>
  32
  33 #include <kapplication.h>
  34 #include <ktoolinvocation.h>
  35
  36 #include "plugin_paths.h"
  37
  38 static QDateTime lastChanged( const QString &dir )
  39 {
  40     QDateTime t = QFileInfo( dir ).lastModified();
  41     if( t.isNull())
  42         return t;
  43     const QStringList subdirs = QDir( dir ).entryList();
  44     for( QStringList::ConstIterator it = subdirs.constBegin();
  45          it != subdirs.constEnd();
  46          ++it )
  47     {
  48         if( *it == "." || *it == ".." )
  49             continue;
  50         QDateTime t2 = lastChanged( *it );
  51         if( !t2.isNull() && t2 > t )
  52             t = t2;
  53     }
  54     return t;
  55 }
  56
  57 static bool checkSearchPathTimestamps( const QStringList &paths, const QStringList &timestamps )
  58 {
  59     QStringList currentTimestamps;
  60     bool changed = false;
  61     QStringList::ConstIterator t = timestamps.constBegin();
  62     for( QStringList::ConstIterator it = paths.constBegin();
  63          it != paths.constEnd();
  64          ++it, ++t )
  65     {
  66         QDateTime current = lastChanged( *it );
  67         // store non-existent directory as "N" string rather than empty string, KConfig
  68         // has a bug with storing a list of empty items
  69         if( *t == "N" ? !current.isNull() : current != QDateTime::fromString( *t, Qt::ISODate ))
  70             changed = true;
  71         currentTimestamps.append( current.isNull() ? "N" : current.toString( Qt::ISODate ));
  72     }
  73     if( changed )
  74     {
  75         KConfig config("kcmnspluginrc");
  76         KConfigGroup cg(&config, "Misc");
  77         cg.writeEntry( "lastSearchPaths", paths );
  78         cg.writeEntry( "lastSearchTimestamps", currentTimestamps );
  79         return true;
  80     }
  81     return false;
  82 }
  83
  84 extern "C"
  85 {
  86     KDE_EXPORT void kcminit_nsplugin()
  87     {
  88         KConfigGroup config(KSharedConfig::openConfig( "kcmnspluginrc", KConfig::NoGlobals ), "Misc");
  89         if( true ) // I don't think this needs to be configurable now
  90         {
  91             bool update = false;
  92             QStringList searchPaths = getSearchPaths();
  93             QStringList lastSearchPaths = config.readEntry( "lastSearchPaths", QStringList());
  94             QStringList lastTimestamps = config.readEntry ( "lastSearchTimestamps", QStringList());
  95             if( searchPaths != lastSearchPaths || lastTimestamps.count() != lastSearchPaths.count())
  96             { // count changed, set empty timestamps, still call checkSearchPathTimestamps()
  97               // in order to save the current timestamps for the next time
  98                 lastSearchPaths = searchPaths;
  99                 lastTimestamps.clear();
 100                 for( int i = 0;
 101                      i < searchPaths.count();
 102                      ++i )
 103                     lastTimestamps.append( "N" );
 104                 update = true;
 105             }
 106             if( checkSearchPathTimestamps( lastSearchPaths, lastTimestamps ))
 107                 update = true;
 108             if( update )
 109                 KToolInvocation::kdeinitExec("nspluginscan");
 110         }
 111     }
 112 }