1 files changed, 230 insertions, 0 deletions
diff --git a/konq-plugins/fsview/scan.h b/konq-plugins/fsview/scan.h
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+++ b/konq-plugins/fsview/scan.h
@@ -0,0 +1,230 @@
+/* This file is part of FSView.
+   Copyright (C) 2002, 2003 Josef Weidendorfer <Josef.Weidendorfer@gmx.de>
+
+   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.
+*/
+
+/*
+ * Classes for breadth-first search in local filesystem
+ */
+
+#ifndef FSDIR_H
+#define FSDIR_H
+
+#include <qptrlist.h>
+#include <qvaluevector.h>
+#include <qfile.h>
+
+/* Use KDE_lstat and KIO::fileoffset_t for 64-bit sizes */
+#include <klargefile.h>
+#include <kio/global.h>
+
+class ScanDir;
+class ScanFile;
+
+class ScanItem
+{
+ public:
+  ScanItem(const QString& p, ScanDir* d)
+    { absPath = p; dir = d; }
+
+  QString absPath;
+  ScanDir* dir;
+};
+
+typedef QPtrList<ScanItem> ScanItemList;
+
+
+/**
+ * Listener for events from directory scanning.
+ *
+ * You can register a listener for the ScanManager to get
+ * all scan events and a listener for every ScanDir for
+ * directory specific scan events.
+ *
+ * sizeChanged is called when a scan of a subdirectory
+ * finished.
+ */
+class ScanListener
+{
+ public:
+  virtual void scanStarted(ScanDir*) {}
+  virtual void sizeChanged(ScanDir*) {}
+  virtual void scanFinished(ScanDir*) {}
+  // destroyed events are not delivered to listeners of ScanManager
+  virtual void destroyed(ScanDir*) {}
+  virtual void destroyed(ScanFile*) {}
+};
+
+
+
+/**
+ * ScanManager
+ *
+ * Start/Stop/Restart Scans. Example:
+ *
+ *   ScanManager m("/opt");
+ *   m.startScan();
+ *   while(m.scan());
+ */
+class ScanManager
+{
+ public:
+  ScanManager();
+  ScanManager(const QString& path);
+  ~ScanManager();
+
+  /** Set the top path for scanning
+   * The ScanDir object created gets attribute data.
+   */
+  ScanDir* setTop(const QString& path, int data = 0);
+  ScanDir* top() { return _topDir; }
+
+  bool scanRunning();
+  unsigned int scanLength() { return _list.count(); }
+  
+  /**
+   * Starts the scan. Stop previous scan if running.
+   * For the actual scan to happen, you have to call
+   * scan() peridically.
+   *
+   * If from !=0, restart scan at given position; from must
+   * be from the previous scan of this manager.
+   */
+  void startScan(ScanDir* from = 0);
+
+  /** Stop a current running scan.
+   * Make all directories to finish their scan.
+   */
+  void stopScan();
+
+  /**
+   * Scan first directory from todo list.
+   * Directories added to the todo list are attributed with data. 
+   * Returns the number of new subdirectories created for scanning.
+   */
+  int scan(int data);
+
+  /* set listener to get a callbacks from this ScanDir */
+  void setListener(ScanListener*);
+  ScanListener* listener() { return _listener; }
+
+ private:
+  ScanItemList _list;
+  ScanDir* _topDir;
+  ScanListener* _listener;
+};
+
+class ScanFile
+{
+ public:
+  ScanFile();
+  ScanFile(const QString& n, KIO::fileoffset_t s);
+  ~ScanFile();
+
+  const QString& name() { return _name; }
+  KIO::fileoffset_t size() { return _size; }
+
+  /* set listener to get callbacks from this ScanDir */
+  void setListener(ScanListener* l) { _listener = l; }
+  ScanListener* listener() { return _listener; }
+
+ private:
+  QString _name;
+  KIO::fileoffset_t _size;
+  ScanListener* _listener;
+};
+
+typedef QValueVector<ScanFile> ScanFileVector;
+typedef QValueVector<ScanDir> ScanDirVector;
+
+/**
+ * A directory to scan.
+ * You can attribute a directory to scan with a
+ * integer data attribute.
+ */
+class ScanDir
+{
+ public:
+  ScanDir();
+  ScanDir(const QString& n, ScanManager* m,
+	  ScanDir* p = 0, int data = 0);
+  ~ScanDir();
+  
+  /* Get items of this directory
+   * and append subdirectories to todo list.
+   *
+   * Directories added to the todo list are attributed with data.
+   * Returns the number of new subdirectories created for scanning.
+   */
+  int scan(ScanItem* si, ScanItemList& list, int data);
+
+  /* clear scan objects below */
+  void clear();
+
+  /*
+   * Setup for child rescan
+   */
+  void setupChildRescan();
+
+  /* Absolute path. Warning: Slow, loops to top parent. */
+  QString path();
+
+  /* get integer data attribute */
+  int data() { return _data; }
+  void setData(int d) { _data = d; }
+
+  ScanFileVector& files() { return _files; }
+  ScanDirVector& dirs() { return _dirs; }
+  const QString& name() { return _name; }
+  KIO::fileoffset_t size() { update(); return _size; }
+  unsigned int fileCount() { update(); return _fileCount; }
+  unsigned int dirCount() { update(); return _dirCount; }
+  ScanDir* parent() { return _parent; }
+  bool scanStarted() { return (_dirsFinished >= 0); }
+  bool scanFinished() { return (_dirsFinished == (int)_dirs.count()); }
+  bool scanRunning() { return scanStarted() && !scanFinished(); }
+  
+  /* set listener to get a callbacks from this ScanDir */
+  void setListener(ScanListener*);
+  ScanListener* listener() { return _listener; }
+  ScanManager* manager() { return _manager; }
+
+  /* force current scan to be finished */
+  void finish();
+
+ private:
+  void update();
+
+  /* this propagates file count and size to upper dirs */
+  void subScanFinished();
+  void callScanStarted();
+  void callSizeChanged();
+  void callScanFinished();
+  
+  ScanFileVector _files;
+  ScanDirVector _dirs;
+
+  QString _name;
+  bool _dirty; /* needs a call to update() */
+  KIO::fileoffset_t _size, _fileSize;
+  unsigned int _fileCount, _dirCount;
+  int _dirsFinished, _data;
+  ScanDir* _parent;
+  ScanListener* _listener;
+  ScanManager* _manager;
+};
+
+#endif