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brianb
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include/mdbtools.h
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221
include/mdbtools.h
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/* MDB Tools - A library for reading MS Access database files
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* Copyright (C) 2000 Brian Bruns
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef _mdbtools_h_
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#define _mdbtools_h_
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <ctype.h>
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#include <string.h>
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#include <glib.h>
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#define MDB_PGSIZE 2048
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#define MDB_MAX_OBJ_NAME 30
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#define MDB_MAX_COLS 256
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#define MDB_CATALOG_PG 18
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#define MDB_MEMO_OVERHEAD 12
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#define MDB_BIND_SIZE 2048
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enum {
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MDB_VER_JET3 = 0,
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MDB_VER_JET4 = 1
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};
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enum {
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MDB_FORM = 0,
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MDB_TABLE,
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MDB_MACRO,
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MDB_SYSTEM_TABLE,
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MDB_REPORT,
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MDB_QUERY,
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MDB_LINKED_TABLE,
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MDB_MODULE,
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MDB_RELATIONSHIP,
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MDB_UNKNOWN_09,
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MDB_UNKNOWN_0A,
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MDB_DATABASE_PROPERTY
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};
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enum {
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MDB_BOOL = 0x01,
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MDB_BYTE = 0x02,
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MDB_INT = 0x03,
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MDB_LONGINT = 0x04,
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MDB_MONEY = 0x05,
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MDB_FLOAT = 0x06,
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MDB_DOUBLE = 0x07,
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MDB_SDATETIME = 0x08,
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MDB_TEXT = 0x0a,
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MDB_OLE = 0x0b,
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MDB_MEMO = 0x0c,
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MDB_REPID = 0x0f
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};
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/* SARG operators */
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enum {
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MDB_EQUAL = 1,
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MDB_GT,
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MDB_LT,
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MDB_GTEQ,
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MDB_LTEQ,
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MDB_ISNULL,
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MDB_NOTNULL
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};
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enum {
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MDB_ASC,
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MDB_DESC
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};
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/* hash to store registered backends */
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GHashTable *mdb_backends;
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typedef struct {
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char **types_table;
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} MdbBackend;
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typedef struct {
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int fd;
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char *filename;
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guint16 cur_pg;
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guint16 row_num;
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unsigned int cur_pos;
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unsigned char pg_buf[MDB_PGSIZE];
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unsigned char alt_pg_buf[MDB_PGSIZE];
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int num_catalog;
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GArray *catalog;
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int pg_size;
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guint32 jet_version;
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guint32 db_key;
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char db_passwd[14];
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MdbBackend *default_backend;
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char *backend_name;
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} MdbHandle;
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typedef struct {
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MdbHandle *mdb;
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char object_name[MDB_MAX_OBJ_NAME+1];
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int object_type;
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unsigned long table_pg; /* misnomer since object may not be a table */
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unsigned long kkd_pg;
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unsigned int kkd_rowid;
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int num_props;
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GArray *props;
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GPtrArray *columns;
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} MdbCatalogEntry;
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typedef struct {
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MdbCatalogEntry *entry;
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char name[MDB_MAX_OBJ_NAME+1];
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int num_cols;
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GPtrArray *columns;
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int num_rows;
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int index_start;
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int num_real_idxs;
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int num_idxs;
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GPtrArray *indices;
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int first_data_pg;
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int cur_pg_num;
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int cur_phys_pg;
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int cur_row;
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} MdbTableDef;
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typedef struct {
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int index_num;
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char name[MDB_MAX_OBJ_NAME+1];
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unsigned char primary_key;
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int first_pg;
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unsigned char sort_order;
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} MdbIndex;
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typedef struct {
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char name[MDB_MAX_OBJ_NAME+1];
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} MdbColumnProp;
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typedef struct {
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char name[MDB_MAX_OBJ_NAME+1];
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int col_type;
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int col_size;
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void *bind_ptr;
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GHashTable *properties;
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int num_sargs;
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GPtrArray *sargs;
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unsigned char is_fixed;
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int query_order;
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} MdbColumn;
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typedef union {
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int i;
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double d;
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char s[256];
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} MdbAny;
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typedef struct {
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int op;
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MdbAny value;
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} MdbSarg;
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/* mem.c */
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extern void mdb_init();
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extern void mdb_exit();
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extern MdbHandle *mdb_alloc_handle();
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extern void mdb_free_handle(MdbHandle *mdb);
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extern void mdb_free_catalog(MdbHandle *mdb);
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extern MdbTableDef *mdb_alloc_tabledef(MdbCatalogEntry *entry);
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/* file.c */
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extern size_t mdb_read_pg(MdbHandle *mdb, unsigned long pg);
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extern size_t mdb_read_alt_pg(MdbHandle *mdb, unsigned long pg);
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extern unsigned char mdb_get_byte(MdbHandle *mdb, int offset);
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extern int mdb_get_int16(MdbHandle *mdb, int offset);
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extern long mdb_get_int32(MdbHandle *mdb, int offset);
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extern double mdb_get_double(MdbHandle *mdb, int offset);
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extern MdbHandle *mdb_open(char *filename);
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/* catalog.c */
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extern void mdb_catalog_dump(MdbHandle *mdb, int obj_type);
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extern int mdb_catalog_rows(MdbHandle *mdb);
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extern MdbCatalogEntry *mdb_get_catalog_entry(MdbHandle *mdb, int rowid, MdbCatalogEntry *entry);
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extern char *mdb_get_objtype_string(int obj_type);
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/* table.c */
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extern MdbTableDef *mdb_read_table(MdbCatalogEntry *entry);
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/* data.c */
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extern void mdb_data_dump(MdbTableDef *table);
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extern void mdb_bind_column(MdbTableDef *table, int col_num, void *bind_ptr);
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extern int mdb_rewind_table(MdbTableDef *table);
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extern int mdb_fetch_row(MdbTableDef *table);
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extern int mdb_is_fixed_col(MdbColumn *col);
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extern char *mdb_col_to_string(MdbHandle *mdb, int start, int datatype, int size);
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/* dump.c */
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extern void buffer_dump(const unsigned char* buf, int start, int end);
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/* backend.c */
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extern char *mdb_get_coltype_string(MdbBackend *backend, int col_type);
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extern void mdb_init_backends();
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extern void mdb_register_backend(MdbBackend *backend, char *backend_name);
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extern int mdb_set_default_backend(MdbHandle *mdb, char *backend_name);
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extern char *mdb_get_relationships(MdbHandle *mdb);
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#endif /* _mdbtools_h_ */
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