#ifndef GROWBUF_H

#define GROWBUF_H

#include <stdlib.h>

#include <string.h>

#define GROW_AMOUNT 1024

/** Class representing a string buffer optimised for growing. */

class GrowBuf

{

  public:

    GrowBuf() : str(0), pos(0), len(0) {}

   ~GrowBuf()         { free(str); str=0; pos=0; len=0; }

    void clear()      { pos=0; }

    void addChar(char c)  { if (pos>=len) { len+=GROW_AMOUNT; str = (char*)realloc(str,len); } 

                        str[pos++]=c; 

                      }

    void addStr(const char *s) {

                        if (s)

                        {

                          int l=strlen(s);

                          if (pos+l>=len) { len+=l+GROW_AMOUNT; str = (char*)realloc(str,len); }

                          strcpy(&str[pos],s);

                          pos+=l;

                        }

                      }

    void addStr(const char *s,int n) {

                        if (s)

                        {

                          int l=strlen(s);

                          if (n

                          if (pos+l>=len) { len+=l+GROW_AMOUNT; str = (char*)realloc(str,len); }

                          strncpy(&str[pos],s,n);

                          pos+=l;

                        }

                      }

    const char *get()     { return str; }

    int getPos() const    { return pos; }

    char at(int i) const  { return str[i]; }

  private:

    char *str;

    int pos;

    int len;

};

#endif