src/search/filenamesearchprotocol.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2010 by Peter Penz <peter.penz19@gmail.com>             *
   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                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  18  ***************************************************************************/
  19
  20 #include "filenamesearchprotocol.h"
  21
  22 #include <KComponentData>
  23 #include <KDirLister>
  24 #include <KFileItem>
  25 #include <KIO/NetAccess>
  26 #include <KIO/Job>
  27 #include <KUrl>
  28 #include <kdemacros.h>
  29 #include <ktemporaryfile.h>
  30
  31 #include <QCoreApplication>
  32 #include <QEventLoop>
  33 #include <QRegExp>
  34
  35 FileNameSearchProtocol::FileNameSearchProtocol( const QByteArray &pool, const QByteArray &app ) :
  36     SlaveBase("search", pool, app),
  37     m_checkContent(false),
  38     m_regExp(0),
  39     m_iteratedDirs()
  40 {
  41 }
  42
  43 FileNameSearchProtocol::~FileNameSearchProtocol()
  44 {
  45     cleanup();
  46 }
  47
  48 void FileNameSearchProtocol::listDir(const QUrl& url)
  49 {
  50     cleanup();
  51
  52     const QString search = url.queryItemValue("search");
  53     if (!search.isEmpty()) {
  54         m_regExp = new QRegExp(search, Qt::CaseInsensitive, QRegExp::Wildcard);
  55     }
  56
  57     m_checkContent = false;
  58     const QString checkContent = url.queryItemValue("checkContent");
  59     if (checkContent == QLatin1String("yes")) {
  60         m_checkContent = true;
  61     }
  62
  63     const QString urlString = url.queryItemValue("url");
  64     searchDirectory(KUrl(urlString));
  65
  66     cleanup();
  67     finished();
  68 }
  69
  70 void FileNameSearchProtocol::searchDirectory(const KUrl& directory)
  71 {
  72     if (directory.path() == QLatin1String("/proc")) {
  73         // Don't try to iterate the /proc directory of Linux
  74         return;
  75     }
  76
  77     // Get all items of the directory
  78     KDirLister *dirLister = new KDirLister();
  79     dirLister->setDelayedMimeTypes(false);
  80     dirLister->setAutoErrorHandlingEnabled(false, 0);
  81     dirLister->openUrl(directory);
  82
  83     QEventLoop eventLoop;
  84     QObject::connect(dirLister, static_cast<void(KDirLister::*)()>(&KDirLister::canceled), &eventLoop, &QEventLoop::quit);
  85     QObject::connect(dirLister, static_cast<void(KDirLister::*)()>(&KDirLister::completed), &eventLoop, &QEventLoop::quit);
  86     eventLoop.exec();
  87
  88     // Visualize all items that match the search pattern
  89     QList<KUrl> pendingDirs;
  90     const KFileItemList items = dirLister->items();
  91     foreach (const KFileItem& item, items) {
  92         bool addItem = false;
  93         if (!m_regExp || item.name().contains(*m_regExp)) {
  94             addItem = true;
  95         } else if (m_checkContent && item.determineMimeType().inherits(QLatin1String("text/plain"))) {
  96             addItem = contentContainsPattern(item.url());
  97         }
  98
  99         if (addItem) {
 100             KIO::UDSEntry entry = item.entry();
 101             entry.insert(KIO::UDSEntry::UDS_URL, item.url().url() );
 102             listEntry(entry,false);
 103         }
 104
 105         if (item.isDir()) {
 106             if (item.isLink()) {
 107                 // Assure that no endless searching is done in directories that
 108                 // have already been iterated.
 109                 const KUrl linkDest(item.url(), item.linkDest());
 110                 if (!m_iteratedDirs.contains(linkDest.path())) {
 111                     pendingDirs.append(linkDest);
 112                 }
 113             } else {
 114                 pendingDirs.append(item.url());
 115             }
 116         }
 117     }
 118     listEntry(KIO::UDSEntry(), true);
 119
 120     m_iteratedDirs.insert(directory.path());
 121
 122     delete dirLister;
 123     dirLister = 0;
 124
 125     // Recursively iterate all sub directories
 126     foreach (const KUrl& pendingDir, pendingDirs) {
 127         searchDirectory(pendingDir);
 128     }
 129 }
 130
 131 bool FileNameSearchProtocol::contentContainsPattern(const KUrl& fileName) const
 132 {
 133     Q_ASSERT(m_regExp);
 134
 135     QString path;
 136     KTemporaryFile tempFile;
 137
 138     if (fileName.isLocalFile()) {
 139         path = fileName.path();
 140     } else if (tempFile.open()) {
 141         KIO::Job* getJob = KIO::file_copy(fileName,
 142                                           tempFile.fileName(),
 143                                           -1,
 144                                           KIO::Overwrite | KIO::HideProgressInfo);
 145         if (!KIO::NetAccess::synchronousRun(getJob, 0)) {
 146             // The non-local file could not be downloaded
 147             return false;
 148         }
 149         path = tempFile.fileName();
 150     } else {
 151         // No temporary file could be created for downloading non-local files
 152         return false;
 153     }
 154
 155     QFile file(path);
 156     if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
 157          return false;
 158     }
 159
 160      QTextStream in(&file);
 161      while (!in.atEnd()) {
 162          const QString line = in.readLine();
 163          if (line.contains(*m_regExp)) {
 164              return true;
 165          }
 166      }
 167
 168      return false;
 169 }
 170
 171 void FileNameSearchProtocol::cleanup()
 172 {
 173     delete m_regExp;
 174     m_regExp = 0;
 175     m_iteratedDirs.clear();
 176 }
 177
 178 extern "C" int KDE_EXPORT kdemain( int argc, char **argv )
 179 {
 180     KComponentData instance("kio_search");
 181     QCoreApplication app(argc, argv);
 182
 183     if (argc != 4) {
 184         fprintf(stderr, "Usage: kio_filenamesearch protocol domain-socket1 domain-socket2\n");
 185         exit(-1);
 186     }
 187
 188     FileNameSearchProtocol slave(argv[2], argv[3]);
 189     slave.dispatchLoop();
 190
 191     return 0;
 192 }