source: orxonox.OLD/orxonox/branches/physics/src/lib/util/substring.cc @ 4178

/* 
   orxonox - the future of 3D-vertical-scrollers

   Copyright (C) 2004 orx

   This program 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; either version 2, or (at your option)
   any later version.

   ### File Specific:
   main-programmer: Christian Meyer
   co-programmer: ...
*/


/**
   \brief breaks a string into parts that were initially seperated by comma
   \param string the string to break into substrings
*/

#include "substring.h"

SubString::SubString( const char* string)
{
        n = 0;
        
        assert( string != NULL);
        
        for( int i = 0; i < strlen(string); i++) if( string[i] == ',') n++;

        n += 1;
        
        strings = new char*[n];
        
        assert( strings != NULL);
        
        int i = 0;
        int l = 0;
        
        const char* offset = string;
        char* end = strchr( string, ',');
        while( end != NULL)
        {
                assert( i < n);
                l = end - offset;
                strings[i] = new char[l + 1];
                assert( strings[i] != NULL);
                strncpy( strings[i], offset, l);
                strings[i][l] = 0;
                i++;
                end++;
                offset = end;
                end = strchr( offset, ',');
        }
        
        strings[i] = new char[l + 1];
        l = strlen( offset);
        strncpy( strings[i], offset, l);
        strings[i][l] = 0;
}

/**
   \brief removes the object from memory
*/
SubString::~SubString()
{
        for( int i = 0; i < n; i++)
        {
                delete strings[i];
        }
        
        delete strings;
}

/**
   \brief get the amount of substrings
   \returns the amount of substrings
*/
int SubString::getN()
{
        return n;
}

/**
   \brief get a particular substring
   \param i the ID of the substring to return
   \returns the designated substring or NULL if an invalid ID was given
*/
const char* SubString::getString( int i)
{
        if( i < n && i >= 0) return strings[i];
        else return NULL;
}