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more gmdb2 work, reorged mdbhandle

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This commit is contained in:
brianb
2003-01-01 22:29:39 +00:00
parent 3c0d61076d
commit cc362c42e9
28 changed files with 893 additions and 181 deletions
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47
include/mdbtools.h
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@@ -92,6 +92,15 @@ enum {
MDB_DESC
};
enum {
MDB_IDX_UNIQUE = 0x01,
MDB_IDX_IGNORENULLS = 0x02,
MDB_IDX_REQUIRED = 0x08
};
#define IS_JET4(mdb) (mdb->f->jet_version==MDB_VER_JET4)
#define IS_JET3(mdb) (mdb->f->jet_version==MDB_VER_JET3)
/* hash to store registered backends */
GHashTable *mdb_backends;
@@ -101,24 +110,19 @@ typedef struct {
typedef struct {
int fd;
gboolean writable;
char *filename;
guint16 cur_pg;
guint16 row_num;
unsigned int cur_pos;
unsigned char pg_buf[MDB_PGSIZE];
unsigned char alt_pg_buf[MDB_PGSIZE];
int num_catalog;
GPtrArray *catalog;
int pg_size;
guint32 jet_version;
guint32 db_key;
char db_passwd[14];
MdbBackend *default_backend;
char *backend_name;
/* free map */
int map_sz;
unsigned char *free_map;
/* offset to row count on data pages...version dependant */
} MdbFile;
/* offset to row count on data pages...version dependant */
typedef struct {
int pg_size;
guint16 row_count_offset;
guint16 tab_num_rows_offset;
guint16 tab_num_cols_offset;
@@ -129,9 +133,23 @@ typedef struct {
guint16 tab_cols_start_offset;
guint16 tab_ridx_entry_size;
guint16 col_fixed_offset;
guint16 col_num_offset;
guint16 col_size_offset;
guint16 col_num_offset;
guint16 tab_col_entry_size;
} MdbFormatConstants;
typedef struct {
MdbFile *f;
guint16 cur_pg;
guint16 row_num;
unsigned int cur_pos;
unsigned char pg_buf[MDB_PGSIZE];
unsigned char alt_pg_buf[MDB_PGSIZE];
int num_catalog;
GPtrArray *catalog;
MdbBackend *default_backend;
char *backend_name;
MdbFormatConstants *fmt;
} MdbHandle;
typedef struct {
@@ -166,6 +184,9 @@ typedef struct {
int map_sz;
unsigned char *usage_map;
/* */
int idxmap_base_pg;
int idxmap_sz;
unsigned char *idx_usage_map;
} MdbTableDef;
typedef struct {
@@ -177,6 +198,7 @@ typedef struct {
int num_keys;
short key_col_num[MDB_MAX_IDX_COLS];
unsigned char key_col_order[MDB_MAX_IDX_COLS];
unsigned char flags;
} MdbIndex;
typedef struct {
@@ -213,6 +235,7 @@ typedef struct {
MdbAny value;
} MdbSarg;
/* mem.c */
extern void mdb_init();
extern void mdb_exit();