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145 lines
4.0 KiB
145 lines
4.0 KiB
/***************************************************************************
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*
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* Copyright (C) 2005 Elad Lahav (elad_lahav@users.sourceforge.net)
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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***************************************************************************/
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#ifndef DIRSCANNER_H
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#define DIRSCANNER_H
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#include <tqobject.h>
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#include <tqevent.h>
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#include <tqthread.h>
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#include <tqdir.h>
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#include <tqstringlist.h>
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#include <tqdict.h>
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#include <tqlistview.h>
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class DirScanner;
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/**
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* Defines a new event that can be used to pass progress information from the
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* dir scanning thread to the main application thread.
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* @author Elad Lahav
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*/
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class DirScanEvent : public TQCustomEvent
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{
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public:
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/** The event's unique ID. */
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enum { EventId = 6924 };
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DirScanEvent(int, bool);
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/** The number of files already scanned. */
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int m_nFiles;
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/** True if the dir scanning thread has finished, false otherwise. */
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bool m_bFinished;
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};
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/**
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* A set of unique strings.
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* TQt3 does not have a set class, so this is a simple implementation based on
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* a TQDict of dummy int pointers.
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* @author Elad Lahav
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*/
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class StringSet : public TQDict<int>
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{
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public:
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StringSet() : TQDict<int>() {}
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void insert(const TQString& sItem) {
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static int nDummy = 0;
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TQDict<int>::insert(sItem, &nDummy);
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}
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bool exists(const TQString& sItem) {
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return find(sItem) != NULL;
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}
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};
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/**
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* Scans a directory for files matching a given pattern, using a separate thread.
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* @author Elad Lahav
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*/
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class DirScanner : public TQThread
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{
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public:
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DirScanner(TQObject*, TQDict<TQListViewItem>*);
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~DirScanner();
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void start(const TQString&, const TQString&, bool);
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/**
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* @return The list of files scanned by this thread.
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*/
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const TQStringList& getFiles() { return m_slFiles; }
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/**
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* Stops a scanning process, by setting the object's cancel flag.
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*/
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void cancel() { m_bCancel = true; }
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/**
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* @return true if the user has cancelled the process, false otherwise
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*/
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bool wasCancelled() { return m_bCancel; }
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protected:
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virtual void run();
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private:
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/** Pointer to an object that receives the scanner update events. */
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TQObject* m_pEventReceiver;
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/** Currently scanned directory. */
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TQDir m_dir;
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/**
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* A set of already-scanned directories (prevents infinite loops in case
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* of cyclic symbolic links in the scanned file system).
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*/
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StringSet m_setScanned;
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/** Pointer to a list of files indexed by the file path (used to identify
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files that should not appear in the scan results.) */
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TQDict<TQListViewItem>* m_pDicFiles;
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/** Regular expression for scanning source files. */
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TQString m_sNameFilter;
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/** The list of scanned file paths. */
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TQStringList m_slFiles;
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/** A cancellation flag. Stops the scanning process when raised. */
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bool m_bCancel;
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/** true to descend to child directories, false otherwise. */
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bool m_bRecursive;
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int scanDir(TQDir&);
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};
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#endif
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