145 lines
4.4 KiB
C++
145 lines
4.4 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 librararies 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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/*%% (c) Copyright 1993, 1994 Hewlett-Packard Company */
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/*%% (c) Copyright 1993, 1994 International Business Machines Corp. */
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/*%% (c) Copyright 1993, 1994 Sun Microsystems, Inc. */
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/*%% (c) Copyright 1993, 1994 Novell, Inc. */
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/*%% $XConsortium: tt_isam_file.h /main/3 1995/10/20 16:43:47 rswiston $ */
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/*
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* tt_isam_file.h - Defines the TT ISAM file class. This class simplifies
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* opening, closing, reading and writing an ISAM file.
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*
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* Copyright (c) 1992 by Sun Microsystems, Inc.
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*/
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#ifndef _TT_ISAM_FILE_H
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#define _TT_ISAM_FILE_H
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#include "util/tt_object.h"
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#include "tt_isam.h"
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#include "tt_isam_key_descriptor_utils.h"
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#include "tt_isam_record_utils.h"
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typedef int (*FatalErrorHandlerFunction) (char *);
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class _Tt_isam_file : public _Tt_object {
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public:
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// Dummy constructor needed to make _tt_isam_file_utils.cc happy
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_Tt_isam_file () {}
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// Real constructors
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_Tt_isam_file (const _Tt_string &file, int mode);
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_Tt_isam_file (const _Tt_string &file,
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int max_record_length,
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int min_record_length,
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_Tt_isam_key_descriptor_ptr primary_key_descriptor,
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int mode);
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~_Tt_isam_file ();
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void setErase (bool_t);
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int sync ();
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//
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// islock and isunlock are not supported by mini-isam
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//
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// int lock ();
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// int unlock ();
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int rename (const _Tt_string&);
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int addIndex (_Tt_isam_key_descriptor_ptr);
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_Tt_isam_record_ptr getEmptyRecord ();
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int findStartRecord (const _Tt_isam_key_descriptor_ptr &key_descriptor,
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int length,
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const _Tt_isam_record_ptr &record,
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int mode);
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_Tt_isam_record_ptr readRecord (int mode);
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int readRecord (int mode, const _Tt_isam_record_ptr&);
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int updateCurrentRecord (const _Tt_isam_record_ptr&);
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int updateRecord (long recnum, const _Tt_isam_record_ptr&);
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int writeRecord (const _Tt_isam_record_ptr&);
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int deleteCurrentRecord ();
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int deleteRecord (long recnum);
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int writeMagicString (const _Tt_string&);
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_Tt_string readMagicString ();
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int setFatalErrorHandler (FatalErrorHandlerFunction);
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long getLastRecordNumber () const
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{
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return currentRecordNumber;
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}
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int getFileDescriptor () const
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{
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return fileDescriptor;
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}
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const _Tt_string &getName () const
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{
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return fileName;
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}
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int getErrorStatus () const
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{
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return errorStatus;
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}
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bool_t isNew () const
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{
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return newFlag;
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}
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private:
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int currentRecordLength;
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long currentRecordNumber;
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bool_t eraseFlag;
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int errorStatus;
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int fileDescriptor;
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_Tt_string fileName;
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int fileMode;
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_Tt_isam_key_descriptor_list_ptr keyDescriptorList;
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int maxRecordLength;
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int minRecordLength;
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bool_t newFlag;
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void setTtISAMFileDefaults ();
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_Tt_isam_record_ptr getFullRecord (const _Tt_string&);
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void getISAMFileInfo ();
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void getStatusInfo ()
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{
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currentRecordLength = isreclen;
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currentRecordNumber = isrecnum;
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errorStatus = iserrno;
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}
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static bool_t isamFatalErrorHandlerSet;
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static int isamFatalErrorHandler (char *message);
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};
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#endif /* _TT_ISAM_FILE_H */
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