/*

ARIA header files for use with ARNL 1.7.1

Copyright(C) 2004, 2005 ActivMedia Robotics, LLC. 
Copyright(C) 2006, 2007, 2008, 2009 MobileRobots Inc.
All rights reserved.

This copy of Aria was relicensed for use with Arnl and the Arnl
license by MobileRobots Inc.  If you wish to download a seperate
distribution of Aria licensed under the GPL or a commercial license go to
http://www.mobilerobots.com/SOFTWARE/aria.html or contact MobileRobots
Inc, at robots@mobilerobots.com or MobileRobots Inc,
10 Columbia Drive, Amherst, NH 03031; 800-639-9481

MobileRobots Inc hereby grants to other individuals or
organizations permission to use this software with Arnl and in
compliance with the Arnl license.  This software may not be
distributed to others except by MobileRobots Inc.

MobileRobots Inc does not make any representations about the
suitability of this software for any purpose.  It is provided "as is"
without express or implied warranty.

*/
/*! \file ArMap.h
 *  \brief Contains the definition of the ArMap class, the primary class for Aria maps.
 *
 * Aria maps are implemented by a collection of classes and interfaces.  The 
 * most important is the ArMapInterface, which is defined in ArMapInterface.h
 * and specifies the methods that all Aria maps must provide.  
 * 
 * This file contains the top-level concrete implementation of the 
 * ArMapInterface.  ArMap is basically the map that is used by the robot 
 * to navigate its environment.  In addition to implementing the methods of 
 * ArMapInterface, ArMap also provides a means of hooking into the Aria config.  
 * When the map file name is specified in the Aria config and is changed during 
 * runtime, ArMap loads the new file and notifies all listeners that the map 
 * has been changed.
 * 
 * In order to accomplish this, ArMap has been implemented using the Proxy 
 * design pattern (refer to "Design Patterns", Gamma et al, 1995).  The 
 * participants are as follows:
 * 
 *   - Subject: ArMapInterface.  The common interface for both the RealSubject
 *     and the Proxy.  It is defined in ArMapInterface.h and is actually 
 *     the combination of several smaller interfaces:  ArMapScanInterface,
 *     ArMapObjectsInterface, ArMapInfoInterface, and ArMapSupplementInterface.
 * 
 *   - RealSubject: ArMapSimple.  The real object that the Proxy represents.
 *     It is defined in ArMapComponents.h, and is implemented by a set of 
 *     helper classes that are also defined in that header file. 
 *
 *   - Proxy: ArMap.  Creates and controls access to the RealSubject.  ArMap
 *     actually contains references to two ArMapSimple objects.  One is
 *     permanent and is the map object that is used by the robot.  The other
 *     is transient and is the map object that is currently being read from 
 *     a file following an Aria configuration update.  If the file is 
 *     successfully read, then the loading ArMapSimple object is copied to 
 *     the main permanent one and mapChanged notifications are sent to
 *     registered listeners.
 * 
 * The following "diagram" illustrates the basic hierarchy:
 *
 * <pre>  
 *        ArMapInterface                          , Defined in ArMapInterface.h
 *        ^ (extends)  ^ 
 *        |            |
 *        |            |
 *     ArMap +-------> ArMapSimple * +-------> ArMapScan *
 *                 (contains)        |
 *                                   +-------> ArMapObjects *
 *                                   |
 *                                   +-------> ArMapInfo *
 *                                   |
 *                                   +-------> ArMapSupplement *
 *
 *                                              * : Defined in ArMapComponents.h
 * </pre>
 * 
 *
 * This header file originally also contained the definition of ArMapObject.  
 * That class has been moved into its own header file (ArMapObject.h).
 * 
 *
 * Maintenance Note #1: In this case, the use of the Proxy design pattern implies 
 * that modifying the ArMap external interface requires multiple changes:  
 * First, the ArMapInterface (or sub-interface) must be updated.  Then the ArMap 
 * and ArMapSimple classes must be modified.  Depending on the change, one of the
 * helper map components may also need to be modified.  It is expected that 
 * such changes to the interface will be infrequent.
 *
 * @see ArMapInfo
 * @see ArMapObject
 * @see ArMapObjects
 * @see ArMapScan
 * @see ArMapSupplement
**/
#ifndef ARMAP_H
#define ARMAP_H
 
#include "ariaTypedefs.h"
#include "ariaUtil.h"

#include "ArMapComponents.h"
#include "ArMapInterface.h"
#include "ArMapUtils.h"

#include "ArFunctor.h"
#include "ArArgumentBuilder.h"
#include "ArMutex.h"

#include <vector>

class ArFileParser;


// =============================================================================
// ArMap
// =============================================================================

/// A map of a space the robot can navigate within, and which can be updated via the Aria config
/**
* ArMap contains data that represents the operating space of the robot, and can
* be used for space searching, localizing, navigating etc.  MobileRobots' ARNL
* and SONARNL localization and navigation libraries use ArMap objects.
* ArMap also provides methods to read and write the map from and to a file,
* along with a mechanism for setting the map file via the global Aria config.
* 
* Types of data stored in a map include sensable obstacles (e.g. walls and 
* furniture in a room) that are represented either as a collection of data 
* points or lines.  The data points are similar to a raster or bit map and 
* are useful for high resolution sensors like lasers.  The lines create a 
* vector map that is useful for low resolution sensors like sonar.  For 
* advanced applications, the sensable obstacle data can be categorized according
* to the type of scan or sensor; see ArMapScanInterface for more information.
* 
* In addition to the obstacle data, the Aria map may contain goals, forbidden
* areas, and other points and regions of interest (a.k.a. "map objects").  
* Advanced applications can extend the set of predefined map object types.
* See @ref MapObjects for more information.
*
* If the application needs to be aware of any changes that are made to the 
* Aria map at runtime, then it should install "mapChanged" callbacks on the map.
* If the map file is re-read while the robot is running, then the callbacks 
* are automatically invoked.  If the application makes other changes to the 
* map by calling any of the set methods, then it should call mapChanged() when
* it is finished.
* 
* See @ref MapFileFormat for the exact format of the actual .map file.
* 
* @section MapThreading Thread issuses, and changing the map
* 
* Different threads will need to access the same map data (for example ARNL, 
* ArForbiddenRangeDevice, networking). However, the ArMap class is not 
* inherently thread-safe.  You must call lock() and  unlock() methods, before 
* and after any access to the map data (e.g. calls to getMapObjects(), 
* getPoints(), setMapObjects(), setPoints()).  
* 
* If you are going to use setMapObjects(), setPoints(), setLines(), or
* setMapInfo(), then you should lock() the map beforehand, call the methods,
* then call mapChanged() to invoke the callbacks, and then finally 
* unlock() the map when done.  Note that mapChanged() will only invoke
* the callbacks if the data has actually changed.
* 
* However, there is an exception: the readFile() and writeFile() 
* methods @b do automatically lock the map while they read and write.
* 
* @section MapObjects Map Objects
* 
* In addition to lines and points, maps may contain "map objects", points
* or regions in space that have special meaning. 
*
* Certain types of objects are predefined for all maps.  These include
* Goal, GoalWithHeading, Dock, ForbiddenLine, ForbiddenArea, and RobotHome.  
* 
*  - Goal and GoalWithHeading are basically named ArPoses, the difference being
*    that the "th" (heading) value is only valid for GoalWithHeading.
*  - Dock is an ArPose that must always have a heading.
*  - ForbiddenLine is a boundary line, and ForbiddenArea is a rectangular
*    "sector". The extents of these objects are given as a pair of 
*    poses, a "from" point and a "to" point.
*  - RobotHome may be either an ArPose or a rectangular sector.
* 
* Rectangular objects may also have an associated angle of rotation, which is 
* stored in the object pose theta value (ArMapObject::getPose().getTh()).
* The actual global coordinates of the rectangle must be calculated
* using this angle and its "from-to" values. You can get a list of the 4
* ArLineSegment objects that comprise the rectangle's edges using
* ArMapObject::getFromToSegments(). If you want to do your own calculations,
* see ArMapObject::ArMapObject().
*
* You can get a pointer to the current list of map objects with getMapObjects(),
* and directly modify the list.  You can also replace the current list of 
* map objects with a new one by calling setMapObjects(); this will destroy 
* the old list of map objects.  Call mapChanged() to notify other components 
* that the map has changed.
*
* In addition to the standard map object types,  is also possible to define 
* custom types of map objects using the "MapInfo" metadata section of the
* map file.  For example, if you wished to program some special behavior that 
* would only occur upon reaching certain goals, you could define a new 
* "SpecialGoal" type in the map file, and check for it in your program.  
* See @ref MapFileFormat for the syntax for defining new object types in the 
* map file.  Custom types will appear in Mapper3 and MobilePlanner in 
* drop-down menus, and instances of the custom types will be displayed in
* MobileEyes.  
*
* <i>Important Note</i>: if a map defines special GoalType or DockType items, 
* then it must define <b>all</b> possible goal or dock types, including the 
* default "Goal", "GoalWithHeading", and "Dock" types if you want those
* types to remain available.
*
*/
class ArMap : public ArMapInterface
{
   
public:

  /// Constructor
  /**
   * @param baseDirectory the name of the directory in which to search for map
   * files that are not fully qualified
   * @param addToGlobalConfig a bool set to true if the map file name parameter 
   * should be added to the global config, Aria::getConfig(); false, otherwise
   * @param configSection the char * name of the config section to which to 
   * add the map file name parameter name; applicable only if addToGlobalConfig 
   * is true
   * @param configParam the char * name of the parameter to be added to the 
   * specified configSection; applicable only if addToGlobalConfig is true
   * @param configDesc the char * description of the configParam; applicable
   * only if addToGlobalConfig is true
   * @param ignoreEmptyFileName a bool set to true if an empty file name is a 
   * valid config parameter value; set to false if a failure should be reported
   * when the file name is empty; applicable only if addToGlobalConfig is true
   * @param priority the ArPriority::Priority of the config parameter; 
   * applicable only if addToGlobalConfig is true
   * @param tempDirectory the name of the directory in which to write temporary
   * files when saving a map; if NULL, then the map file is written directly.  
   * Note that using a temp file reduces the risk that the map will be corrupted
   * if the application crashes.
  **/
  AREXPORT ArMap(const char *baseDirectory = "./",
 		             bool addToGlobalConfig = true, 
 		             const char *configSection = "Files",
 		             const char *configParam = "Map",
 		             const char *configDesc = 
 		                  "Map of the environment that the robot uses for navigation",
 		             bool ignoreEmptyFileName = true,
                 ArPriority::Priority priority = ArPriority::IMPORTANT,
                 const char *tempDirectory = NULL);

  /// Copy constructor
  AREXPORT ArMap(const ArMap &other);

  /// Assignment operator
  AREXPORT ArMap &operator=(const ArMap &other);

  /// Destructor
  AREXPORT virtual ~ArMap(void);


  // ===========================================================================
  // ArMapInterface Methods
  // ===========================================================================

   // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  // Scan Types Methods 
  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
   
  AREXPORT virtual std::list<std::string> getScanTypes() const;

  AREXPORT virtual bool setScanTypes(const std::list<std::string> &scanTypeList);

  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  // Locking / Mutex Methods 
  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  AREXPORT virtual int lock();

  AREXPORT virtual int tryLock();

  AREXPORT virtual int unlock();

  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  // ArMapScanInterface
  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  AREXPORT virtual const char *getDisplayString
                                 (const char *scanType = ARMAP_DEFAULT_SCAN_TYPE);

  AREXPORT virtual std::vector<ArPose> *getPoints
                         (const char *scanType = ARMAP_DEFAULT_SCAN_TYPE);

  AREXPORT virtual ArPose getMinPose(const char *scanType = ARMAP_DEFAULT_SCAN_TYPE);
  AREXPORT virtual ArPose getMaxPose(const char *scanType = ARMAP_DEFAULT_SCAN_TYPE);
  AREXPORT virtual int getNumPoints(const char *scanType = ARMAP_DEFAULT_SCAN_TYPE);
  AREXPORT virtual bool isSortedPoints(const char *scanType = ARMAP_DEFAULT_SCAN_TYPE) const;

  AREXPORT virtual void setPoints(const std::vector<ArPose> *points,
                                  const char *scanType = ARMAP_DEFAULT_SCAN_TYPE,
                                  bool isSortedPoints = false,
                                  ArMapChangeDetails *changeDetails = NULL);

  AREXPORT virtual std::vector<ArLineSegment> *getLines
                         (const char *scanType = ARMAP_DEFAULT_SCAN_TYPE);

  AREXPORT virtual ArPose getLineMinPose(const char *scanType = ARMAP_DEFAULT_SCAN_TYPE);
  AREXPORT virtual ArPose getLineMaxPose(const char *scanType = ARMAP_DEFAULT_SCAN_TYPE);
  AREXPORT virtual int getNumLines(const char *scanType = ARMAP_DEFAULT_SCAN_TYPE);
  AREXPORT virtual bool isSortedLines(const char *scanType = ARMAP_DEFAULT_SCAN_TYPE) const;
   
  AREXPORT virtual void setLines(const std::vector<ArLineSegment> *lines,
                                 const char *scanType = ARMAP_DEFAULT_SCAN_TYPE,
                                 bool isSortedLines = false,
                                 ArMapChangeDetails *changeDetails = NULL);
  
  AREXPORT virtual int getResolution(const char *scanType = ARMAP_DEFAULT_SCAN_TYPE);

  AREXPORT virtual void setResolution(int resolution,
                                      const char *scanType = ARMAP_DEFAULT_SCAN_TYPE,
                                      ArMapChangeDetails *changeDetails = NULL);
 
  AREXPORT virtual void writeScanToFunctor
                              (ArFunctor1<const char *> *functor, 
			                         const char *endOfLineChars,
                               const char *scanType = ARMAP_DEFAULT_SCAN_TYPE);

  AREXPORT virtual void writePointsToFunctor
                              (ArFunctor2<int, std::vector<ArPose> *> *functor,
                               const char *scanType = ARMAP_DEFAULT_SCAN_TYPE,
                               ArFunctor1<const char *> *keywordFunctor = NULL);

   AREXPORT virtual void writeLinesToFunctor
 		                          (ArFunctor2<int, std::vector<ArLineSegment> *> *functor,
                               const char *scanType = ARMAP_DEFAULT_SCAN_TYPE,
                               ArFunctor1<const char *> *keywordFunctor = NULL);
  
   AREXPORT virtual bool addToFileParser(ArFileParser *fileParser);

   AREXPORT virtual bool remFromFileParser(ArFileParser *fileParser);


   AREXPORT virtual bool readDataPoint( char *line);

   AREXPORT virtual bool readLineSegment( char *line);
 
   /** Public for ArQClientMapProducer **/
 
   AREXPORT virtual void loadDataPoint(double x, double y);
   AREXPORT virtual void loadLineSegment(double x1, double y1, double x2, double y2);
   
  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  // ArMapObjectsInterface
  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

   AREXPORT virtual ArMapObject *findFirstMapObject(const char *name, 
                                                    const char *type,
                                                    bool isIncludeWithHeading = false);
 
   AREXPORT virtual ArMapObject *findMapObject(const char *name, 
 				                                       const char *type = NULL,
                                               bool isIncludeWithHeading = false);
 
   AREXPORT virtual std::list<ArMapObject *> findMapObjectsOfType
                                               (const char *type,
                                                bool isIncludeWithHeading = false);

   AREXPORT virtual std::list<ArMapObject *> *getMapObjects(void);
 
   AREXPORT virtual void setMapObjects(const std::list<ArMapObject *> *mapObjects,
                                       bool isSortedObjects = false,
                                       ArMapChangeDetails *changeDetails = NULL); 
 
   AREXPORT virtual void writeObjectListToFunctor
                              (ArFunctor1<const char *> *functor, 
 			                         const char *endOfLineChars);

  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  // ArMapInfoInterface
  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

   AREXPORT virtual std::list<ArArgumentBuilder *> *getInfo(const char *infoName);

   AREXPORT virtual std::list<ArArgumentBuilder *> *getInfo(int infoType);

   AREXPORT virtual std::list<ArArgumentBuilder *> *getMapInfo(void);

   AREXPORT virtual int getInfoCount() const;

   AREXPORT virtual std::list<std::string> getInfoNames() const;

   AREXPORT virtual bool setInfo(const char *infoName,
 						                     const std::list<ArArgumentBuilder *> *infoList,
                                 ArMapChangeDetails *changeDetails = NULL); 

   AREXPORT virtual bool setInfo(int infoType,
 						                     const std::list<ArArgumentBuilder *> *infoList,
                                 ArMapChangeDetails *changeDetails = NULL); 

   AREXPORT virtual bool setMapInfo(const std::list<ArArgumentBuilder *> *mapInfo,
                                    ArMapChangeDetails *changeDetails = NULL); 

   AREXPORT virtual const char *getInfoName(int infoType);

   AREXPORT virtual void writeInfoToFunctor(ArFunctor1<const char *> *functor, 
 			                                      const char *endOfLineChars);
 

  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  // ArMapSupplementInterface
  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  AREXPORT virtual bool hasOriginLatLongAlt();
  AREXPORT virtual ArPose getOriginLatLong();
  AREXPORT virtual double getOriginAltitude();

  AREXPORT virtual void setOriginLatLongAlt
                                        (bool hasOriginLatLong,
                                         const ArPose &originLatLong,
                                         double altitude,
                                         ArMapChangeDetails *changeDetails = NULL);


  AREXPORT virtual void writeSupplementToFunctor(ArFunctor1<const char *> *functor, 
			                                          const char *endOfLineChars);


  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  // Remaining ArMapInterface Methods
  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  AREXPORT virtual void clear();

  AREXPORT virtual bool set(ArMapInterface *other);

  AREXPORT virtual ArMapInterface *clone();

  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  // Map Changed / Callback Methods
  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  AREXPORT virtual void mapChanged(void);

  AREXPORT virtual void addMapChangedCB
                            (ArFunctor *functor, 
 				                     ArListPos::Pos position = ArListPos::LAST);

  AREXPORT virtual void remMapChangedCB(ArFunctor *functor);

  AREXPORT virtual void addPreMapChangedCB
                          (ArFunctor *functor,
                           ArListPos::Pos position = ArListPos::LAST);

  AREXPORT virtual void remPreMapChangedCB(ArFunctor *functor);

  AREXPORT virtual void setMapChangedLogLevel(ArLog::LogLevel level); 

  AREXPORT virtual ArLog::LogLevel getMapChangedLogLevel(void); 


  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  // Persistence
  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  AREXPORT virtual void writeToFunctor(ArFunctor1<const char *> *functor, 
 			                                const char *endOfLineChars);

  AREXPORT virtual void writeObjectsToFunctor(ArFunctor1<const char *> *functor, 
 			                                        const char *endOfLineChars,
                                              bool isOverrideAsSingleScan = false,
                                              const char *maxCategory = NULL);

  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  // File I/O Methods
  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  
  AREXPORT virtual void addPreWriteFileCB(ArFunctor *functor,
                                          ArListPos::Pos position = ArListPos::LAST);
  AREXPORT virtual void remPreWriteFileCB(ArFunctor *functor);

  AREXPORT virtual void addPostWriteFileCB(ArFunctor *functor,
                                           ArListPos::Pos position = ArListPos::LAST);
  AREXPORT virtual void remPostWriteFileCB(ArFunctor *functor);

#ifndef SWIG
  /** @swigomit (can't write to arguments yet) */
  AREXPORT virtual bool readFile(const char *fileName, 
 			                           char *errorBuffer,
                                 size_t errorBufferLen,
                                 unsigned char *md5DigestBuffer,
                                 size_t md5DigestBufferLen);
  AREXPORT bool readFile(const char *fileName, char *errorBuffer, size_t errorBufferLen);
#endif
  AREXPORT bool readFile(const char *fileName);

#ifndef SWIG
  /** @swigomit (can't write to arguments yet) */
  AREXPORT virtual bool writeFile(const char *fileName, 
                                  bool internalCall,
                                  unsigned char *md5DigestBuffer = NULL,
                                  size_t md5DigestBufferLen = 0,
                                  time_t fileTimestamp = -1);
#endif

  virtual bool writeFile(const char *fileName) 
  {
    return writeFile(fileName, false, NULL, 0, -1);
  }

#ifndef SWIG
  /// @swigomit
  AREXPORT virtual struct stat getReadFileStat() const;
#endif

  AREXPORT virtual bool getMapId(ArMapId *mapIdOut,
                                 bool isInternalCall = false);

  AREXPORT virtual bool calculateChecksum(unsigned char *md5DigestBuffer,
                                          size_t md5DigestBufferLen);


  AREXPORT virtual const char *getBaseDirectory(void) const;

  AREXPORT virtual void setBaseDirectory(const char *baseDirectory);

  AREXPORT virtual const char *getTempDirectory(void) const;

  AREXPORT virtual void setTempDirectory(const char *tempDirectory);


 	AREXPORT virtual std::string createRealFileName(const char *fileName);

  AREXPORT virtual const char *getFileName(void) const;

  AREXPORT virtual void setSourceFileName(const char *sourceName,
                                          const char *fileName,
                                          bool isInternalCall = false);

  AREXPORT virtual bool refresh();

  AREXPORT virtual void setIgnoreEmptyFileName(bool ignore);

  AREXPORT virtual bool getIgnoreEmptyFileName(void);

  AREXPORT virtual void setIgnoreCase(bool ignoreCase = false);

  AREXPORT virtual bool getIgnoreCase(void);


  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  // Inactive Section
  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  AREXPORT virtual ArMapInfoInterface *getInactiveInfo();

  AREXPORT virtual ArMapObjectsInterface *getInactiveObjects();

  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  // Miscellaneous
  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


  AREXPORT virtual ArArgumentBuilder *findMapObjectParams
                                          (const char *mapObjectName);

  AREXPORT virtual bool setMapObjectParams(const char *mapObjectName,
                                           ArArgumentBuilder *params,
                                           ArMapChangeDetails  *changeDetails = NULL);


  AREXPORT virtual std::list<ArArgumentBuilder *> *getRemainder();

  AREXPORT virtual void setQuiet(bool isQuiet);
 	
  AREXPORT virtual bool parseLine(char *line);

  AREXPORT virtual void parsingComplete(void);

  AREXPORT virtual bool isLoadingDataStarted();

  AREXPORT virtual bool isLoadingLinesAndDataStarted();

  // ===========================================================================
  // End of ArMapInterface
  // ===========================================================================



  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  // ArMap Methods
  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  /// Reads a map and changes the config map name to that file
  AREXPORT bool readFileAndChangeConfig(const char *fileName);
  /// Changes the config map name
  AREXPORT void changeConfigMapName(const char *fileName);



 protected:
 
   /// Processes changes to the Aria configuration; loads a new map file if necessary
   bool processFile(char *errorBuffer, size_t errorBufferLen);
 
 protected:
 
   // Lock to protect data during file I/O operations
   ArMutex myMutex;
 
   /// File path in which to find the map file name
   std::string myBaseDirectory;
   /// Name of the map file 
   std::string myFileName;
   /// File statistics for the map file
   struct stat myReadFileStat;

   /// Name of the Aria config parameter that specifies the map file name
   std::string myConfigParam;
   /// Whether to ignore (not process) an empty Aria config parameter
   bool myIgnoreEmptyFileName;
   /// Whether to ignore case when comparing map file names
   bool myIgnoreCase;
 
   /// Whether the Aria config has already been processed at least once
   bool myConfigProcessedBefore;
   /// The name of the map file specified in the Aria config parameter
   char myConfigMapName[MAX_MAP_NAME_LENGTH];
 
   /// The current map used by the robot
   ArMapSimple * const myCurrentMap;
   /// The map that is being loaded, i.e. read from a file; will be copied to the current map if successful
   ArMapSimple * myLoadingMap;
   
   /// Whether to run in "quiet mode", i.e. logging less information
   bool myIsQuiet;
  
   /// Callback that processes changes to the Aria config.
   ArRetFunctor2C<bool, ArMap, char *, size_t> myProcessFileCB;
 
}; // end class ArMap

 
#endif // ARMAP_H
 
 
