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/*
Copyright (C) 1993, 1996, 1997, 2008, 2009, 2010 Free Software Foundation, Inc.
This file is part of the GNU Accounting Utilities
The GNU Accounting Utilities are free software; you can redistribute
them and/or modify them under the terms of the GNU General Public
License as published by the Free Software Foundation; either version
3, or (at your option) any later version.
The GNU Accounting Utilities are distributed in the hope that they 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 the GNU Accounting Utilities; see the file COPYING. If
not, write to the Free Software Foundation, 675 Mass Ave, Cambridge,
MA 02139, USA.
*/
/* file_rd.h
*
* data structures and routines for reading/writing binary
* record-oriented files.
*
*/
#ifndef FILE_RD_H
#define FILE_RD_H
#include <unistd.h>
struct file_list
{
char *name;
struct file_list *next;
};
struct file_rd_info
{
struct file_list *the_files;
FILE *fp; /* current file pointer */
char *name; /* current file name -- we need this
because we close files as soon as
we find their ends and free their
entries from the linked list */
off_t recs_read; /* how many records are in our buffer? */
off_t recs_left; /* how many records are left in the
buffer to be used? */
void *buffer; /* the buffer for the data */
int buffered_records; /* how many records to buffer */
int record_size; /* how big is each record? */
int backwards; /* non-zero if we're reading backwards */
long rec_number; /* record number in the currently open
file, for error-reporting purposes */
};
struct file_rd_info *file_reader_init (int record_size,
int buffered_records,
int backwards);
void file_reader_add_file (struct file_rd_info *fri, char *name);
char *file_reader_get_entry (struct file_rd_info *fri);
void file_reader_print_file_and_line (FILE *out, struct file_rd_info *fri);
#endif /* FILE_RD_H */
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