/* -*- mode: C; c-file-style: "gnu" -*- */

/* dbus-hash.h Generic hash table utility (internal to D-Bus implementation)

 * 

 * Copyright (C) 2002  Red Hat, Inc.

 * Portion Copyright © 2008 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.

 * Licensed under the Academic Free License version 2.1

 * 

 * 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  02111-1307  USA

 *

 */

#ifndef DBUS_HASH_H

#define DBUS_HASH_H

#include <dbus/dbus-memory.h>

#include <dbus/dbus-types.h>

DBUS_BEGIN_DECLS

/**

 * @addtogroup DBusHashTable

 * @{

 */

/** Hash iterator object. The iterator is on the stack, but its real

 * fields are hidden privately.

 */

struct DBusHashIter

{

  void *dummy1; /**< Do not use. */

  void *dummy2; /**< Do not use. */

  void *dummy3; /**< Do not use. */

  void *dummy4; /**< Do not use. */

  int   dummy5; /**< Do not use. */

  int   dummy6; /**< Do not use. */

};

typedef struct DBusHashTable DBusHashTable;

typedef struct DBusHashIter  DBusHashIter;

/* Allowing an arbitrary function as with GLib

 * would be nicer for a public API, but for

 * an internal API this saves typing, we can add

 * more whenever we feel like it.

 */

typedef enum

{

  DBUS_HASH_STRING,        /**< Hash keys are strings. */

  DBUS_HASH_TWO_STRINGS,   /**< Hash key is two strings in one memory block, i.e. foo\\0bar\\0 */

  DBUS_HASH_INT,           /**< Hash keys are integers. */

  DBUS_HASH_POINTER,       /**< Hash keys are pointers. */

  DBUS_HASH_ULONG          /**< Hash keys are unsigned long. */

} DBusHashType;

#ifdef __SYMBIAN32__

IMPORT_C

#endif

DBusHashTable* _dbus_hash_table_new                (DBusHashType      type,

                                                    DBusFreeFunction  key_free_function,

                                                    DBusFreeFunction  value_free_function);

DBusHashTable* _dbus_hash_table_ref                (DBusHashTable    *table);

#ifdef __SYMBIAN32__

IMPORT_C

#endif

void           _dbus_hash_table_unref              (DBusHashTable    *table);

void           _dbus_hash_table_remove_all         (DBusHashTable    *table);

#ifdef __SYMBIAN32__

IMPORT_C

#endif

void           _dbus_hash_iter_init                (DBusHashTable    *table,

                                                    DBusHashIter     *iter);

#ifdef __SYMBIAN32__

IMPORT_C

#endif

dbus_bool_t    _dbus_hash_iter_next                (DBusHashIter     *iter);

void           _dbus_hash_iter_remove_entry        (DBusHashIter     *iter);

#ifdef __SYMBIAN32__

IMPORT_C

#endif

void*          _dbus_hash_iter_get_value           (DBusHashIter     *iter);

void           _dbus_hash_iter_set_value           (DBusHashIter     *iter,

                                                    void             *value);

int            _dbus_hash_iter_get_int_key         (DBusHashIter     *iter);

#ifdef __SYMBIAN32__

IMPORT_C

#endif

const char*    _dbus_hash_iter_get_string_key      (DBusHashIter     *iter);

const char*    _dbus_hash_iter_get_two_strings_key (DBusHashIter     *iter);

#ifdef __SYMBIAN32__

IMPORT_C

#endif

unsigned long  _dbus_hash_iter_get_ulong_key       (DBusHashIter     *iter);

dbus_bool_t    _dbus_hash_iter_lookup              (DBusHashTable    *table,

                                                    void             *key,

                                                    dbus_bool_t       create_if_not_found,

                                                    DBusHashIter     *iter);

#ifdef __SYMBIAN32__

IMPORT_C

#endif

void*          _dbus_hash_table_lookup_string      (DBusHashTable    *table,

                                                    const char       *key);

void*          _dbus_hash_table_lookup_two_strings (DBusHashTable    *table,

                                                    const char       *key);

void*          _dbus_hash_table_lookup_int         (DBusHashTable    *table,

                                                    int               key);

void*          _dbus_hash_table_lookup_pointer     (DBusHashTable    *table,

                                                    void             *key);

#ifdef __SYMBIAN32__

IMPORT_C

#endif

void*          _dbus_hash_table_lookup_ulong       (DBusHashTable    *table,

                                                    unsigned long     key);

#ifdef __SYMBIAN32__

IMPORT_C

#endif

dbus_bool_t    _dbus_hash_table_remove_string      (DBusHashTable    *table,

                                                    const char       *key);

dbus_bool_t    _dbus_hash_table_remove_two_strings (DBusHashTable    *table,

                                                    const char       *key);

dbus_bool_t    _dbus_hash_table_remove_int         (DBusHashTable    *table,

                                                    int               key);

dbus_bool_t    _dbus_hash_table_remove_pointer     (DBusHashTable    *table,

                                                    void             *key);

#ifdef __SYMBIAN32__

IMPORT_C

#endif

dbus_bool_t    _dbus_hash_table_remove_ulong       (DBusHashTable    *table,

                                                    unsigned long     key);

#ifdef __SYMBIAN32__

IMPORT_C

#endif

dbus_bool_t    _dbus_hash_table_insert_string      (DBusHashTable    *table,

                                                    char             *key,

                                                    void             *value);

dbus_bool_t    _dbus_hash_table_insert_two_strings (DBusHashTable    *table,

                                                    char             *key,

                                                    void             *value);

dbus_bool_t    _dbus_hash_table_insert_int         (DBusHashTable    *table,

                                                    int               key,

                                                    void             *value);

dbus_bool_t    _dbus_hash_table_insert_pointer     (DBusHashTable    *table,

                                                    void             *key,

                                                    void             *value);

#ifdef __SYMBIAN32__

IMPORT_C

#endif

dbus_bool_t    _dbus_hash_table_insert_ulong       (DBusHashTable    *table,

                                                    unsigned long     key,

                                                    void             *value);

#ifdef __SYMBIAN32__

IMPORT_C

#endif

int            _dbus_hash_table_get_n_entries      (DBusHashTable    *table);

/* Preallocation */

/** A preallocated hash entry */

typedef struct DBusPreallocatedHash DBusPreallocatedHash;

#ifdef __SYMBIAN32__

IMPORT_C

#endif

DBusPreallocatedHash *_dbus_hash_table_preallocate_entry          (DBusHashTable        *table);

#ifdef __SYMBIAN32__

IMPORT_C

#endif

void                  _dbus_hash_table_free_preallocated_entry    (DBusHashTable        *table,

                                                                   DBusPreallocatedHash *preallocated);

#ifdef __SYMBIAN32__

IMPORT_C

#endif

void                  _dbus_hash_table_insert_string_preallocated (DBusHashTable        *table,

                                                                   DBusPreallocatedHash *preallocated,

                                                                   char                 *key,

                                                                   void                 *value);

/** @} */

DBUS_END_DECLS

#endif /* DBUS_HASH_H */