129 lines
4.0 KiB
C++
129 lines
4.0 KiB
C++
/*
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* CDE - Common Desktop Environment
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*
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* Copyright (c) 1993-2012, The Open Group. All rights reserved.
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*
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* These libraries and programs are free software; you can
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* redistribute them and/or modify them under the terms of the GNU
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* Lesser General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* These libraries and programs are distributed in the hope that
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* they will be useful, but WITHOUT ANY WARRANTY; without even the
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* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU Lesser General Public License for more
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* details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with these libraries and programs; if not, write
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* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
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* Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* $XConsortium: abs_storage.h /main/6 1996/07/18 14:52:29 drk $
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*
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* Copyright (c) 1992 HAL Computer Systems International, Ltd.
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* All rights reserved. Unpublished -- rights reserved under
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* the Copyright Laws of the United States. USE OF A COPYRIGHT
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* NOTICE IS PRECAUTIONARY ONLY AND DOES NOT IMPLY PUBLICATION
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* OR DISCLOSURE.
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*
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* THIS SOFTWARE CONTAINS CONFIDENTIAL INFORMATION AND TRADE
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* SECRETS OF HAL COMPUTER SYSTEMS INTERNATIONAL, LTD. USE,
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* DISCLOSURE, OR REPRODUCTION IS PROHIBITED WITHOUT THE
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* PRIOR EXPRESS WRITTEN PERMISSION OF HAL COMPUTER SYSTEMS
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* INTERNATIONAL, LTD.
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*
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* RESTRICTED RIGHTS LEGEND
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* Use, duplication, or disclosure by the Government is subject
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* to the restrictions as set forth in subparagraph (c)(l)(ii)
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* of the Rights in Technical Data and Computer Software clause
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* at DFARS 252.227-7013.
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*
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* HAL COMPUTER SYSTEMS INTERNATIONAL, LTD.
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* 1315 Dell Avenue
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* Campbell, CA 95008
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*
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*/
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#ifndef _abs_storage_h
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#define _abs_storage_h 1
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#include "storage/rep_policy.h"
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#include "utility/buffer.h"
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#include "utility/types.h"
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#include "object/root.h"
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#include "storage/version.h"
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/*****************************************
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// abstract storage class
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// this class provides a set of common
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// member function signatures and a policy
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// pointer for all derived storage classes.
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*****************************************/
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typedef enum
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{
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mmdb_big_endian = 1,
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mmdb_little_endian = 2
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} mmdb_byte_order_t;
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class abs_storage : public root
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{
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public:
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int index_num;
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abs_storage( char* path, char* name,
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c_code_t c_id,
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rep_policy* rep_p = 0
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);
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virtual ~abs_storage() ;
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void sync() {};
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virtual void remove() = 0; // wipe all contents
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// i/o functions
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virtual int readString (mmdb_pos_t loc, char* base, int len,
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int str_offset = 0) = 0;
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virtual int insertString(mmdb_pos_t& loc, const char* base, int len, Boolean flush = false) = 0;
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virtual int appendString(mmdb_pos_t loc, const char*, int len,
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Boolean flush_opt = false) = 0;
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virtual int get_str_ptr(mmdb_pos_t loc, char*&, int& len
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) = 0;
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virtual int updateString(mmdb_pos_t loc, const char* base, int len,
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int string_ofst = 0, Boolean flush = false) = 0;
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virtual int deleteString (mmdb_pos_t loc, Boolean flush = false) = 0;
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virtual int allocString (mmdb_pos_t& loc, int len,
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char*&, int mode = 0) = 0;
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// status functions
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virtual const char* my_path() { return path; };
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virtual const char* my_name() { return name; };
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virtual Boolean io_mode(int mode) = 0;
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// return byte order of the machine with one of enums in MMDB_BYTE_ORDER
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int byte_order();
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virtual Boolean swap_order() { return v_swap_order; };
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mm_version& get_db_version() { return f_version; };
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friend class storage_mgr_t;
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protected:
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char path[PATHSIZ];
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char name[PATHSIZ];
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rep_policy *policy;
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Boolean v_swap_order;
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mm_version f_version;
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};
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typedef abs_storage* storagePtr;
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#endif
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