src/kitemviews/private/kdirectorycontentscounterworker.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2011 by Peter Penz <peter.penz19@gmail.com>             *
   3  *   Copyright (C) 2013 by Frank Reininghaus <frank78ac@googlemail.com>    *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  19  ***************************************************************************/
  20
  21 #include "kdirectorycontentscounterworker.h"
  22
  23 // Required includes for subItemsCount():
  24 #ifdef Q_OS_WIN
  25     #include <QDir>
  26 #else
  27     #include <QFile>
  28     #include <qplatformdefs.h>
  29 #endif
  30
  31 KDirectoryContentsCounterWorker::KDirectoryContentsCounterWorker(QObject* parent) :
  32     QObject(parent)
  33 {
  34     qRegisterMetaType<KDirectoryContentsCounterWorker::Options>();
  35 }
  36
  37 int KDirectoryContentsCounterWorker::subItemsCount(const QString& path, Options options)
  38 {
  39     const bool countHiddenFiles = options & CountHiddenFiles;
  40     const bool countDirectoriesOnly = options & CountDirectoriesOnly;
  41
  42 #ifdef Q_OS_WIN
  43     QDir dir(path);
  44     QDir::Filters filters = QDir::NoDotAndDotDot | QDir::System;
  45     if (countHiddenFiles) {
  46         filters |= QDir::Hidden;
  47     }
  48     if (countDirectoriesOnly) {
  49         filters |= QDir::Dirs;
  50     } else {
  51         filters |= QDir::AllEntries;
  52     }
  53     return dir.entryList(filters).count();
  54 #else
  55     // Taken from kio/src/widgets/kdirmodel.cpp
  56     // Copyright (C) 2006 David Faure <faure@kde.org>
  57
  58     int count = -1;
  59     auto dir = QT_OPENDIR(QFile::encodeName(path));
  60     if (dir) {
  61         count = 0;
  62         QT_DIRENT *dirEntry = nullptr;
  63         while ((dirEntry = QT_READDIR(dir))) {
  64             if (dirEntry->d_name[0] == '.') {
  65                 if (dirEntry->d_name[1] == '\0' || !countHiddenFiles) {
  66                     // Skip "." or hidden files
  67                     continue;
  68                 }
  69                 if (dirEntry->d_name[1] == '.' && dirEntry->d_name[2] == '\0') {
  70                     // Skip ".."
  71                     continue;
  72                 }
  73             }
  74
  75             // If only directories are counted, consider an unknown file type and links also
  76             // as directory instead of trying to do an expensive stat()
  77             // (see bugs 292642 and 299997).
  78             const bool countEntry = !countDirectoriesOnly ||
  79                                     dirEntry->d_type == DT_DIR ||
  80                                     dirEntry->d_type == DT_LNK ||
  81                                     dirEntry->d_type == DT_UNKNOWN;
  82             if (countEntry) {
  83                 ++count;
  84             }
  85         }
  86         QT_CLOSEDIR(dir);
  87     }
  88     return count;
  89 #endif
  90 }
  91
  92 void KDirectoryContentsCounterWorker::countDirectoryContents(const QString& path, Options options)
  93 {
  94     emit result(path, subItemsCount(path, options));
  95 }