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/*
* tardy - a tar post-processor
* Copyright (C) 1998, 1999, 2002 Peter Miller;
* All rights reserved.
*
* 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 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
*
* MANIFEST: interface definition for common/symtab.cc
*/
#ifndef COMMON_SYMTAB_H
#define COMMON_SYMTAB_H
#include <rcstring.h>
class symtab
{
public:
~symtab();
symtab();
void *query(const rcstring &) const;
rcstring query_fuzzy(const rcstring &) const;
void assign(const rcstring &, void *);
void assign_push(const rcstring &, void *);
void remove(const rcstring &);
void dump(const char *) const;
void walk(void (*func)(const symtab &st, const rcstring &key,
void *data, void *arg), void *arg);
void reap_set(void (*)(void *));
private:
symtab(const symtab &);
symtab &operator = (const symtab &);
void split(void);
struct row
{
rcstring key;
void *data;
row *overflow;
};
symtab *chain;
void (*reap)(void *);
row **hash_table;
str_hash_ty hash_modulus;
str_hash_ty hash_cutover;
str_hash_ty hash_cutover_mask;
str_hash_ty hash_cutover_split_mask;
str_hash_ty hash_split;
str_hash_ty hash_load;
};
#if 0
template <T>
class symbol_table<T>:
private symtab
{
public:
~symbol_table<T>() {}
symbol_table<T> : symtab() { reap_set(reaper); }
void assign(const rcstring &key, const T &value)
{ symtab::assign(key, new T(arg)); }
void remove(const rcstring &key)
{ symtab::remove(key); }
bool contains(const rcstring &key) { return !!symtab::query(key); }
T *query(const rcstring &key) { return (T *)symtab::query(key); }
T &operator[](const rcstring &key) { void *tp = query(key);
if (!tp) { tp = new T(); symtab::assign(key, tp); }
return *tp; }
private:
symbol_table<T>(const symbol_table<T> &) { }
symbol_table<T> &operator = (const symbol_table<T> &) { return *this; }
static void reaper(void *p) { delete (T *)p; }
};
#endif
#endif /* COMMON_SYMTAB_H */
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