/*
 * Copyright © 2005 William Pitcock, et al.
 * Rights to this code are as documented in doc/pod/license.pod.
 *
 * Data structures for flags to bitmask processing routines.
 *
 * $Id: confparse.h,v 1.5 2007/09/09 20:05:51 pippijn Exp $
 */

#ifndef CONFPARSE_H
#define CONFPARSE_H

#include <common/util.h>
#include <ermyth/callback.h>
#include <ermyth/type_traits.h>

struct config_file_t : zero_initialised
{
  char *cf_filename;
  config_entry_t *cf_entries;
  config_file_t *cf_next;
};

struct config_entry_t : zero_initialised
{
  config_file_t *ce_fileptr;

  int ce_varlinenum;
  char *ce_varname;
  char *ce_vardata;
  int ce_vardatanum;
  int ce_fileposstart;
  int ce_fileposend;

  int ce_sectlinenum;
  config_entry_t *ce_entries;

  config_entry_t *ce_prevlevel;

  config_entry_t *ce_next;

  bool valid ()
  {
    return ce_vardata != NULL;
  }

  template<typename T>
  T vardata ()
  {
    return vardata (types::get<T> ());
  }

private:
  char *vardata (types::charptr_type)
  {
    return ce_vardata;
  }

  int vardata (types::int_type)
  {
    return ce_vardatanum;
  }
};

struct Token
{
  char const * const text;
  int const value;
};

class ConfTable
{
  struct callbacks
  {
    functor::callback0<> ready;
  };

public: // typedefs
  unsigned index;
  typedef indexing_vector<ConfTable> list_type;

public: // variables
  char const * const name;
  int const rehashable;
  int (*handler) (config_entry_t *);
  char *str_val;
  int *int_val;

  static callbacks callback;

  ConfTable (char const * const blockname, int const can_rehash, int (*handlerfunc) (config_entry_t *))
  : name (blockname), rehashable (can_rehash), handler (handlerfunc), str_val (0), int_val (0)
  {
  }
};

E void init_newconf (void);
E void deinit_conf (void);
E struct ConfTable *find_top_conf (char const * const name);
E struct ConfTable *find_conf_item (char const * const name, ConfTable::list_type &conflist);
E void add_top_conf (char const * const name, int (*handler) (config_entry_t *ce));
E void add_conf_item (char const * const name, ConfTable::list_type &conflist, int (*handler) (config_entry_t *ce));
E void del_top_conf (char const * const name);
E void del_conf_item (char const * const name, ConfTable::list_type &conflist);
E int subblock_handler (config_entry_t *ce, ConfTable::list_type &entries);

#endif