LineInput.H

/* LineInput.H */
/* $Id: LineInput.H,v 1.3 2009/04/14 12:06:50 vlad Exp $ */
#ifndef __LineInput_H
#define __LineInput_H

#include <stdio.h>

#include <csi/CharAr.H>


class LineInput
{
protected:

  FILE      *file;
  CharAr    buf;
  int       strip_base;

public:

  LineInput (FILE* fp);

  int   read_line ();

  char& operator[] (int i)
    {  return buf.operator[](strip_base + i);  }

  operator char* ()
    {  return &buf.operator[](strip_base);  }

  int   len ()
    {  return buf.count() - strip_base - 1;  }

  void  strip (int i)
    {  strip_base += i;  }

  void  unstrip (int i)
    {  strip_base -= i;
       if(strip_base < 0)  strip_base = 0;  }

  void  undo_strips ()
    {  strip_base = 0;  }

  char* word (int i);

  int   word_len (int i);

  int   word_cmp (int i, const char* s);

  int   skip (const char* set);

};


#endif /* LineInput.H */