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 #include "dolphin_detailsmodesettings.h"
  32
  33 KDirectoryContentsCounterWorker::KDirectoryContentsCounterWorker(QObject* parent) :
  34     QObject(parent)
  35 {
  36     qRegisterMetaType<KDirectoryContentsCounterWorker::Options>();
  37 }
  38
  39 KDirectoryContentsCounterWorker::CountResult walkDir(const QString &dirPath,
  40                                                      const bool countHiddenFiles,
  41                                                      const bool countDirectoriesOnly,
  42                                                      QT_DIRENT *dirEntry,
  43                                                      const uint allowedRecursiveLevel)
  44 {
  45     int count = -1;
  46     long size = -1;
  47     auto dir = QT_OPENDIR(QFile::encodeName(dirPath));
  48     if (dir) {
  49         count = 0;
  50         QT_STATBUF buf;
  51
  52         while ((dirEntry = QT_READDIR(dir))) {
  53             if (dirEntry->d_name[0] == '.') {
  54                 if (dirEntry->d_name[1] == '\0' || !countHiddenFiles) {
  55                     // Skip "." or hidden files
  56                     continue;
  57                 }
  58                 if (dirEntry->d_name[1] == '.' && dirEntry->d_name[2] == '\0') {
  59                     // Skip ".."
  60                     continue;
  61                 }
  62             }
  63
  64             // If only directories are counted, consider an unknown file type and links also
  65             // as directory instead of trying to do an expensive stat()
  66             // (see bugs 292642 and 299997).
  67             const bool countEntry = !countDirectoriesOnly ||
  68                     dirEntry->d_type == DT_DIR ||
  69                     dirEntry->d_type == DT_LNK ||
  70                     dirEntry->d_type == DT_UNKNOWN;
  71             if (countEntry) {
  72                 ++count;
  73             }
  74
  75             if (allowedRecursiveLevel > 0) {
  76
  77                 bool linkFound = false;
  78                 QString nameBuf = QStringLiteral("%1/%2").arg(dirPath, dirEntry->d_name);
  79
  80                 if (dirEntry->d_type == DT_REG || dirEntry->d_type == DT_LNK) {
  81                     if (QT_STAT(nameBuf.toLocal8Bit(), &buf) == 0) {
  82                         if (S_ISDIR(buf.st_mode)) {
  83                             // was a dir link, recurse
  84                             linkFound = true;
  85                         }
  86                         size += buf.st_size;
  87                     }
  88                 }
  89                 if (dirEntry->d_type == DT_DIR || linkFound) {
  90                     // recursion for dirs and dir links
  91                     size += walkDir(nameBuf, countHiddenFiles, countDirectoriesOnly, dirEntry, allowedRecursiveLevel - 1).size;
  92                 }
  93             }
  94         }
  95         QT_CLOSEDIR(dir);
  96     }
  97     return KDirectoryContentsCounterWorker::CountResult{count, size};
  98 }
  99
 100 KDirectoryContentsCounterWorker::CountResult KDirectoryContentsCounterWorker::subItemsCount(const QString& path, Options options)
 101 {
 102     const bool countHiddenFiles = options & CountHiddenFiles;
 103     const bool countDirectoriesOnly = options & CountDirectoriesOnly;
 104
 105 #ifdef Q_OS_WIN
 106     QDir dir(path);
 107     QDir::Filters filters = QDir::NoDotAndDotDot | QDir::System;
 108     if (countHiddenFiles) {
 109         filters |= QDir::Hidden;
 110     }
 111     if (countDirectoriesOnly) {
 112         filters |= QDir::Dirs;
 113     } else {
 114         filters |= QDir::AllEntries;
 115     }
 116     return {dir.entryList(filters).count(), 0};
 117 #else
 118
 119     const uint maxRecursiveLevel = DetailsModeSettings::directorySizeCount() ? 1 : DetailsModeSettings::recursiveDirectorySizeLimit();
 120
 121     QT_DIRENT *dirEntry = nullptr;
 122
 123     auto res = walkDir(QFile::encodeName(path), countHiddenFiles, countDirectoriesOnly, dirEntry, maxRecursiveLevel);
 124
 125     return res;
 126 #endif
 127 }
 128
 129 void KDirectoryContentsCounterWorker::countDirectoryContents(const QString& path, Options options)
 130 {
 131     auto res = subItemsCount(path, options);
 132     emit result(path, res.count, res.size);
 133 }