moved dbase into ext/ along with the bundled library

dbase programs are no longer included

1 files changed, 98 insertions, 0 deletions

diff --git a/ext/dbase/dbf_ndx.h b/ext/dbase/dbf_ndx.h
new file mode 100644
index 0000000000..3faff04025
--- /dev/null
+++ b/ext/dbase/dbf_ndx.h
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 1993 Brad Eacker,
+ *              (Music, Intuition, Software, and Computers)
+ * All Rights Reserved
+ */
+
+/*
+ * dbf .ndx header structure on disk and in memory
+ *
+ *  Basic info taken from:
+ *	"Clipper Programming Guide, 3rd Edition, Version 5.01"
+ *	by Rick Spence
+ */
+
+#ifndef _DBF_NDX_H_
+#define	 _DBF_NDX_H_
+
+#include "dbf.h"
+
+#define	NDX_PAGE_SZ	512
+
+/* on disk ndx header */
+struct dndx_header {
+	char	dndx_st_pg[4];		/* starting page number */
+	char	dndx_tot_pg[4];		/* total number of pages */
+	char	dndx_filler1[4];	/* space */
+	char	dndx_key_len[2];	/* key length */
+	char	dndx_keys_ppg[2];	/* number of keys per page */
+	char	dndx_key_type[2];	/* key type */
+	char	dndx_size_key[4];	/* size of the key record */
+	char	dndx_filler2;		/* space */
+	char	dndx_unique;		/* whether or not done with unique */
+	char	dndx_key_name[488];	/* string defining the key */
+};
+typedef struct dndx_header dndx_header_t;
+
+/* in memory ndx header */
+struct ndx_header {
+	long	ndx_start_pg;
+	long	ndx_total_pgs;
+	unsigned short	ndx_key_len;
+	unsigned short	ndx_keys_ppg;
+	unsigned short	ndx_key_type;
+	char	ndx_unique;
+	long	ndx_key_size;
+	char	*ndx_key_name;
+	int	ndx_fd;
+	struct ndx_page	*ndx_fp;
+	dndx_header_t *ndx_hpage;
+	struct ndx_record *ndx_cur_rec;
+};
+typedef struct ndx_header ndx_header_t;
+
+/* these are the possible values in the key type field */
+#define	NDX_CHAR_TYPE	00
+#define	NDX_NUM_TYPE	01
+
+/* on disk key record */
+struct dndx_record {
+	char	dndx_left_pg[4];	/* number of left page */
+	char	dndx_dbf_rec[4];	/* dbf record number */
+	char	dndx_key_data;		/* key data */
+};
+typedef struct dndx_record dndx_record_t;
+
+struct ndx_record {
+	long	ndxr_left;
+	long	ndxr_rec;
+	char	*ndxr_key_data;
+	struct ndx_page *ndxr_page;	/* page pointer to where we are from*/
+	int	ndxr_p_nrec;		/* number of the record within page */
+};
+typedef struct ndx_record ndx_record_t;
+
+struct dndx_page {
+	char	dndxp_num_keys[4];	/* number of keys on this page */
+	struct dndx_record dndx_rp;
+};
+typedef struct dndx_page dndx_page_t;
+
+struct ndx_page {
+	long		ndxp_page_no;
+	long		ndxp_num_keys;
+	dndx_page_t	*ndxp_page_data;
+	ndx_header_t	*ndxp_header_p;
+	long		ndxp_last_key;
+	struct ndx_page	*ndxp_parent;	/* parent page */
+	int		ndxp_par_rno;	/* record number within parent */
+	struct ndx_record *ndxp_records;
+};
+typedef struct ndx_page ndx_page_t;
+
+extern ndx_header_t *ndx_get_header(int);
+
+extern ndx_record_t *ndx_get_first_rec(ndx_header_t *);
+extern ndx_record_t *ndx_get_next_rec(ndx_header_t *, ndx_record_t *);
+
+#endif /* _DBF_NDX_H_ */