From 1e389d8d4cfb0d9104a632fbf4af9e59b9ed19f7 Mon Sep 17 00:00:00 2001
From: brianb <brianb>
Date: Wed, 22 Mar 2000 02:07:34 +0000
Subject: [PATCH] Jet version detection from trevor@harrison.org Update to
 HACKERS file with (sparce) information about indexes.

---
 AUTHORS                |  2 ++
 HACKERS                | 13 +++++++++----
 src/include/mdbtools.h |  6 ++++++
 3 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/AUTHORS b/AUTHORS
index 4201b64..44fdd03 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -5,3 +5,5 @@ Karl Nyberg <knyberg@grebyn.com>
 Georg Bauer <gb@hugo.westfalen.de>
 
 Carl Seutter <cgseutter@worldnet.att.net>
+
+Trevor Harrison <trevor@harrison.org>
diff --git a/HACKERS b/HACKERS
index 14c9293..37e3f49 100644
--- a/HACKERS
+++ b/HACKERS
@@ -114,18 +114,18 @@ The header to table definition pages start look something like this:
 | ???? | 2 bytes | generally same as # of cols but not always             |
 | ???? | 2 bytes | ???                                                    |
 | ???? | 2 bytes | number of columns in table                             |
-| ???? | 4 bytes | number of data pages in table                          |
-| ???? | 4 bytes | number of data pages in table (repeat)                 |
+| ???? | 4 bytes | number of indexes for this table                       |
+| ???? | 4 bytes | number of indexes for this table (repeat)              |
 | 0x00 | 1 byte  | ???                                                    |
 | ???? | 2 bytes | page number of first datapage for table                |
 | ???? | 2 bytes | ???                                                    |
 | ???? | 2 bytes | page number of first datapage for table                |
 | 0x00 | 1 byte  | ???                                                    |
 +-------------------------------------------------------------------------+
-| Iterate for the 2 x number of datapages                                 |
+| Iterate for the 2 x number of indexes                                   |
 +-------------------------------------------------------------------------+
 | ???? | 4 bytes | number of rows in table                                |
-| ???? | 4 bytes | ???                                                    |
+| ???? | 4 bytes | number of rows in the index                            |
 +-------------------------------------------------------------------------+
 
 The next few bytes are somewhat of a mystery right now, but around 0x2B from 
@@ -154,6 +154,11 @@ Column Type may be one of the following (not complete).
 Following the 18 byte column records begins the column names, listed in order
 with a 1 byte size prefix preceding each name.
 
+After a number of bytes (generally 0x3a) the names of the indexes are listed.
+
+It is currently unknown how indexes are mapped to columns and how they point at
+index pages or the format of the index pages.
+
 Data Rows
 ---------
 
diff --git a/src/include/mdbtools.h b/src/include/mdbtools.h
index c680fa9..57bc474 100644
--- a/src/include/mdbtools.h
+++ b/src/include/mdbtools.h
@@ -34,6 +34,10 @@
 #define MDB_CATALOG_PG 18
 #define MDB_MEMO_OVERHEAD 12
 
+enum {
+	MDB_VER_JET3 = 0,
+	MDB_VER_JET4 = 1
+};
 enum {
 	MDB_FORM = 0,
 	MDB_TABLE,
@@ -73,6 +77,8 @@ typedef struct {
 	int		num_catalog;
 	GArray		*catalog;
 	int		pg_size;
+	guint32		jet_version;
+	guint32		db_key;
 } MdbHandle; 
 
 typedef struct {