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95 lines
2.2 KiB
C
95 lines
2.2 KiB
C
/*
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* Copyright (c) 1991, 1992, 1993 Brad Eacker,
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* (Music, Intuition, Software, and Computers)
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* All Rights Reserved
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*/
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/*
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* dbf header structure on disk (pc dbase III)
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*
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* Basic info taken from:
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* "File Formats for Popular PC Software"
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* Jeff Walden
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* (c) 1986 John Wiley & Sons, Inc.
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*/
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#ifndef _DBF_H_
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#define _DBF_H_
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#include <stdlib.h>
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#include <string.h>
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#ifdef WIN32
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#include <io.h>
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#else
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#include <unistd.h>
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#endif
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/* So we can use O_BINARY on non-Win32 systems. */
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#if !defined(O_BINARY) && !defined(WIN32)
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#define O_BINARY (0)
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#endif
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struct dbf_dhead {
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char dbh_dbt; /* memo (dbt) file present */
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char dbh_date[3]; /* last update YY, MM, DD */
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char dbh_records[4]; /* number of records LE */
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char dbh_hlen[2]; /* header length LE */
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char dbh_rlen[2]; /* record length LE */
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char dbh_res[20]; /* padding */
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};
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#define DBH_DATE_YEAR 0 /* byte offset for year in dbh_date */
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#define DBH_DATE_MONTH 1
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#define DBH_DATE_DAY 2
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/*
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* field description on disk
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*/
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#define DBF_NAMELEN 11
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struct dbf_dfield {
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char dbf_name[DBF_NAMELEN]; /* name of field */
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char dbf_type; /* type of field */
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char dbf_fda[4]; /* something for dbase III */
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char dbf_flen[2]; /* field length [and decimal if N] */
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char dbf_res[14]; /* padding */
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};
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struct db_field {
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char db_fname[DBF_NAMELEN+1]; /* 0 terminated */
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char db_type; /* type of field */
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int db_flen; /* length of field */
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int db_fdc; /* number of decimals in field */
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char *db_format; /* format for printing %s etc */
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int db_foffset; /* offset within record */
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};
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typedef struct db_field dbfield_t;
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struct db_head {
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int db_fd;
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unsigned char db_dbt; /* dbt present */
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char db_date[9]; /* date of last update in db format */
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long db_records; /* number of records */
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int db_hlen; /* header length */
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int db_rlen; /* record length */
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int db_nfields; /* number of fields */
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dbfield_t *db_fields; /* field info */
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char *db_name; /* name of dbf file */
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int db_cur_rec; /* current record */
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};
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typedef struct db_head dbhead_t;
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#define DBH_TYPE_NORMAL 0x03
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#define DBH_TYPE_MEMO 0x83
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#define VALID_RECORD ' '
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#define DELETED_RECORD '*'
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#include "dbf_head.h"
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#include "dbf_misc.h"
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#include "dbf_rec.h"
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#endif /* _DBF_H_ */
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