/* ================================================================================== */
/* Copyright (c) 1998-1999 3Com Corporation or its subsidiaries. All rights reserved. */
/* ================================================================================== */

#ifndef __MAPFILE_H__
#define __MAPFILE_H__

#include <stdio.h>

// -----------------------------------------------------------------------------
// class MapFile
//
// A MapFile is a class which reads a file of name -> value pair mappings into
// memory, and then presents the data as an associative map
// -----------------------------------------------------------------------------
class MapEntry;

class MapFile
{
  public:

    // -----------------------------------------------------------------------------
    // constructor / destructor
    // -----------------------------------------------------------------------------
    
    MapFile( int buckets = 20 );
    MapFile( const char* filename, int buckets = 20 );
    virtual ~MapFile( void );

    // -----------------------------------------------------------------------------
    // public methods
    // -----------------------------------------------------------------------------

    void parseFile( const char* fname );

    // add mapping to Map. Memory is copied.
    void add( const char* key, const char* value );
    bool remove( const char* key );
    char* find( const char* key );
    int size() { return _count; }
    void dump( FILE* f );

    void setCaseCompare( bool b ) { _useCase = b; }
    bool getCaseCompare() { return _useCase; }
    
  private:
    
    // -----------------------------------------------------------------------------
    // private methods
    // -----------------------------------------------------------------------------

    void initialize();
    
    void removeEntry( MapEntry* entry );
    void insertEntry( MapEntry* entry );
    int hash( const char* key );
    MapEntry* lookup( const char* key );
    
    void scanLine( char* line );
    void parseLine( char* line );
    char* trim( char *s );

    int compare( const char *s1, const char *s2 );

    // -----------------------------------------------------------------------------
    // private data members
    // -----------------------------------------------------------------------------    

    bool _useCase;
    int _numBuckets;
    int _count;
    MapEntry **_buckets;
};

#endif /* __MAPFILE_H__ */