diff options
Diffstat (limited to 'konq-plugins/fsview/scan.cpp')
| -rw-r--r-- | konq-plugins/fsview/scan.cpp | 362 |
1 files changed, 362 insertions, 0 deletions
diff --git a/konq-plugins/fsview/scan.cpp b/konq-plugins/fsview/scan.cpp new file mode 100644 index 0000000..ed691e3 --- /dev/null +++ b/konq-plugins/fsview/scan.cpp @@ -0,0 +1,362 @@ +/* This file is part of FSView. + Copyright (C) 2002, 2003 Josef Weidendorfer <[email protected]> + + KCachegrind is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public + License as published by the Free Software Foundation, version 2. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; see the file COPYING. If not, write to + the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + Boston, MA 02110-1301, USA. +*/ + +#include <qdir.h> +#include <qstringlist.h> + +#include <kapplication.h> +#include <kdebug.h> + +#include "scan.h" +#include "inode.h" + + +// ScanManager + +ScanManager::ScanManager() +{ + _topDir = 0; + _listener = 0; +} + +ScanManager::ScanManager(const QString& path) +{ + _topDir = 0; + _listener = 0; + setTop(path); +} + +ScanManager::~ScanManager() +{ + stopScan(); + if (_topDir) delete _topDir; +} + +void ScanManager::setListener(ScanListener* l) +{ + _listener = l; +} + +ScanDir* ScanManager::setTop(const QString& path, int data) +{ + stopScan(); + if (_topDir) { + delete _topDir; + _topDir = 0; + } + if (!path.isEmpty()) { + _topDir = new ScanDir(path, this, 0, data); + } + return _topDir; +} + +bool ScanManager::scanRunning() +{ + if (!_topDir) return false; + + return _topDir->scanRunning(); +} + +void ScanManager::startScan(ScanDir* from) +{ + if (!_topDir) return; + if (!from) from = _topDir; + + if (scanRunning()) stopScan(); + + from->clear(); + if (from->parent()) + from->parent()->setupChildRescan(); + + _list.append(new ScanItem(from->path(),from)); +} + +void ScanManager::stopScan() +{ + if (!_topDir) return; + + if (0) kdDebug(90100) << "ScanManager::stopScan, scanLength " + << _list.count() << endl; + + ScanItem* si; + while( (si=_list.take(0))!=0 ) { + si->dir->finish(); + delete si; + } +} + +int ScanManager::scan(int data) +{ + ScanItem* si = _list.take(0); + if (!si) return false; + + int newCount = si->dir->scan(si, _list, data); + delete si; + + return newCount; +} + + +// ScanFile + +ScanFile::ScanFile() +{ + _size = 0; + _listener = 0; +} + +ScanFile::ScanFile(const QString& n, KIO::fileoffset_t s) +{ + _name = n; + _size = s; + _listener = 0; +} + +ScanFile::~ScanFile() +{ + if (_listener) _listener->destroyed(this); +} + +// ScanDir + +ScanDir::ScanDir() +{ + _dirty = true; + _dirsFinished = -1; /* scan not started */ + + _parent = 0; + _manager = 0; + _listener = 0; + _data = 0; +} + +ScanDir::ScanDir(const QString& n, ScanManager* m, + ScanDir* p, int data) + : _name(n) +{ + _dirty = true; + _dirsFinished = -1; /* scan not started */ + + _parent = p; + _manager = m; + _listener = 0; + _data = data; +} + +ScanDir::~ScanDir() +{ + if (_listener) _listener->destroyed(this); +} + +void ScanDir::setListener(ScanListener* l) +{ + _listener = l; +} + +QString ScanDir::path() +{ + if (_parent) { + QString p = _parent->path(); + if (!p.endsWith("/")) p += "/"; + return p + _name; + } + + return _name; +} + +void ScanDir::clear() +{ + _dirty = true; + _dirsFinished = -1; /* scan not started */ + + _files.clear(); + _dirs.clear(); +} + +void ScanDir::update() +{ + if (!_dirty) return; + _dirty = false; + + _fileCount = 0; + _dirCount = 0; + _size = 0; + + if (_dirsFinished == -1) return; + + if (_files.count()>0) { + _fileCount += _files.count(); + _size = _fileSize; + } + if (_dirs.count()>0) { + _dirCount += _dirs.count(); + ScanDirVector::iterator it; + for( it = _dirs.begin(); it != _dirs.end(); ++it ) { + (*it).update(); + _fileCount += (*it)._fileCount; + _dirCount += (*it)._dirCount; + _size += (*it)._size; + } + } +} + +int ScanDir::scan(ScanItem* si, ScanItemList& list, int data) +{ + clear(); + _dirsFinished = 0; + _fileSize = 0; + _dirty = true; + + KURL u; + u.setPath(si->absPath); + if (!kapp->authorizeURLAction("list", KURL(), u)) { + if (_parent) + _parent->subScanFinished(); + + return 0; + } + + QDir d(si->absPath); + QStringList fileList = d.entryList( QDir::Files | + QDir::Hidden | QDir::NoSymLinks ); + + if (fileList.count()>0) { + KDE_struct_stat buff; + + _files.reserve(fileList.count()); + + QStringList::Iterator it; + for (it = fileList.begin(); it != fileList.end(); ++it ) { + KDE_lstat( QFile::encodeName(si->absPath + "/" + (*it)), &buff ); + _files.append( ScanFile(*it, buff.st_size) ); + _fileSize += buff.st_size; + } + } + + QStringList dirList = d.entryList( QDir::Dirs | + QDir::Hidden | QDir::NoSymLinks ); + + if (dirList.count()>2) { + _dirs.reserve(dirList.count()-2); + + QStringList::Iterator it; + for (it = dirList.begin(); it != dirList.end(); ++it ) { + if ( ((*it) == "..") || ((*it) == ".") ) continue; + _dirs.append( ScanDir(*it, _manager, this, data) ); + list.append( new ScanItem( si->absPath + "/" + (*it), + &(_dirs.last()) )); + } + _dirCount += _dirs.count(); + } + + callScanStarted(); + callSizeChanged(); + + if (_dirs.count() == 0) { + callScanFinished(); + + if (_parent) + _parent->subScanFinished(); + } + + return _dirs.count(); +} + +void ScanDir::subScanFinished() +{ + _dirsFinished++; + callSizeChanged(); + + if (0) kdDebug(90100) << "ScanDir::subScanFinished [" << path() + << "]: " << _dirsFinished << "/" << _dirs.count() << endl; + + + + if (_dirsFinished < (int)_dirs.count()) return; + + /* all subdirs read */ + callScanFinished(); + + if (_parent) + _parent->subScanFinished(); +} + +void ScanDir::finish() +{ + if (scanRunning()) { + _dirsFinished = (int)_dirs.count(); + callScanFinished(); + } + + if (_parent) + _parent->finish(); +} + +void ScanDir::setupChildRescan() +{ + if (_dirs.count() == 0) return; + + _dirsFinished = 0; + ScanDirVector::iterator it; + for( it = _dirs.begin(); it != _dirs.end(); ++it ) + if ((*it).scanFinished()) _dirsFinished++; + + if (_parent && + (_dirsFinished < (int)_dirs.count()) ) + _parent->setupChildRescan(); + + callScanStarted(); +} + +void ScanDir::callScanStarted() +{ + if (0) kdDebug(90100) << "ScanDir:Started [" << path() + << "]: size " << size() << ", files " << fileCount() << endl; + + ScanListener* mListener = _manager ? _manager->listener() : 0; + + if (_listener) _listener->scanStarted(this); + if (mListener) mListener->scanStarted(this); +} + +void ScanDir::callSizeChanged() +{ + if (0) kdDebug(90100) << ". [" << path() + << "]: size " << size() << ", files " << fileCount() << endl; + + _dirty = true; + + if (_parent) _parent->callSizeChanged(); + + ScanListener* mListener = _manager ? _manager->listener() : 0; + + if (_listener) _listener->sizeChanged(this); + if (mListener) mListener->sizeChanged(this); +} + +void ScanDir::callScanFinished() +{ + if (0) kdDebug(90100) << "ScanDir:Finished [" << path() + << "]: size " << size() << ", files " << fileCount() << endl; + + ScanListener* mListener = _manager ? _manager->listener() : 0; + + if (_listener) _listener->scanFinished(this); + if (mListener) mListener->scanFinished(this); +} + |