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Diffstat (limited to 'src/dirscanner.cpp')
| -rw-r--r-- | src/dirscanner.cpp | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/src/dirscanner.cpp b/src/dirscanner.cpp new file mode 100644 index 0000000..517237e --- /dev/null +++ b/src/dirscanner.cpp @@ -0,0 +1,164 @@ +/*************************************************************************** + * + * Copyright (C) 2005 Elad Lahav (elad_lahav@users.sourceforge.net) + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + ***************************************************************************/ + +#include <qapplication.h> +#include "dirscanner.h" + +/** + * Class constructor. + * @param nFiles The number of files scanned since the previous event + * @param bFinished true if all files were scanned, false otherwise + */ +DirScanEvent::DirScanEvent(int nFiles, bool bFinished) + : QCustomEvent(EventId), + m_nFiles(nFiles), + m_bFinished(bFinished) +{ +} + +/** + * Class constructor. + * @param pEventReceiver Pointer to an object to receive DirScanEvent + * updates + * @param pDicFiles Pointer to a map of current project files (to + avoid duplication) + */ +DirScanner::DirScanner(QObject* pEventReceiver, + QDict<QListViewItem>* pDicFiles) : QThread(), + m_pEventReceiver(pEventReceiver), + m_pDicFiles(pDicFiles) +{ +} + +/** + * Class destructor. + */ +DirScanner::~DirScanner() +{ +} + +/** + * Begins a new search for source files. + * Invokes the search thread on a given directory. The search may be either + * recursive (i.e., the search will descend to each sub-directory) or flat + * (will search the given directory only.) + * @param sDir The name of the directory to search + * @param sNameFilter Defines the search pattern + * @param bRecursive true to descend into sub-dorectories, false otherwise + */ +void DirScanner::start(const QString& sDir, const QString& sNameFilter, + bool bRecursive) +{ + // Initialise the search parameters + m_dir = QDir(sDir); + m_sNameFilter = sNameFilter; + m_bCancel = false; + m_bRecursive = bRecursive; + m_slFiles.clear(); + + // Invoke the thread + QThread::start(); +} + +/** + * Begins a scan of files on the directory associated with this object. + * Note that this function is synchronous: it returns when the scan ends. + */ +void DirScanner::run() +{ + int nFiles; + + nFiles = scanDir(m_dir); + QApplication::postEvent(m_pEventReceiver, + new DirScanEvent(nFiles, true)); + + m_setScanned.clear(); +} + +/** + * Recursively scans a directory for a files matching the current filter. + * @param dir A directory object set to the folder from which files are + * added + * @return The total number of files added + */ +int DirScanner::scanDir(QDir& dir) +{ + QString sCanon; + QStringList slDirFiles, slDirs; + QStringList::const_iterator itr; + QString sFile; + int nFiles = 0; + + if (m_bCancel) + return -1; + + // Make sure this directory has not been previously visited (e.g., through a + // symbolic link) + sCanon = dir.canonicalPath(); + if (m_setScanned.exists(sCanon)) + return 0; + + m_setScanned.insert(sCanon); + + // Add all files in this directory + slDirFiles = dir.entryList(m_sNameFilter, QDir::Files); + for (itr = slDirFiles.begin(); itr != slDirFiles.end(); ++itr) { + sFile = dir.absPath() + "/" + *itr; + + // Make sure an entry for this file does not exist + if (m_pDicFiles->find(sFile) == NULL) { + m_slFiles.append(sFile); + nFiles++; + } + } + + QApplication::postEvent(m_pEventReceiver, + new DirScanEvent(nFiles, false)); + + // Recurse into sub-directories, if requested + if (!m_bRecursive) + return nFiles; + + slDirs = dir.entryList(QDir::Dirs); + + // Iterate the list of sub-directories + for (itr = slDirs.begin(); itr != slDirs.end(); ++itr) { + if (m_bCancel) + return -1; + + // Skip the "." and ".." directories + if (*itr == "." || *itr == "..") + continue; + + // Add the files in each sub-directory + QDir dirSub(dir); + if (dirSub.cd(*itr)) + nFiles += scanDir(dirSub); + } + + return nFiles; +} |