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      1 /*
      2 ** 2006 June 7
      3 **
      4 ** The author disclaims copyright to this source code.  In place of
      5 ** a legal notice, here is a blessing:
      6 **
      7 **    May you do good and not evil.
      8 **    May you find forgiveness for yourself and forgive others.
      9 **    May you share freely, never taking more than you give.
     10 **
     11 *************************************************************************
     12 ** This header file defines the SQLite interface for use by
     13 ** shared libraries that want to be imported as extensions into
     14 ** an SQLite instance.  Shared libraries that intend to be loaded
     15 ** as extensions by SQLite should #include this file instead of
     16 ** sqlite3.h.
     17 **
     18 ** @(#) $Id: sqlite3ext.h,v 1.10 2007/03/29 18:46:01 drh Exp $
     19 */
     20 #ifndef _SQLITE3EXT_H_
     21 #define _SQLITE3EXT_H_
     22 #include "sqlite3.h"
     23 
     24 typedef struct sqlite3_api_routines sqlite3_api_routines;
     25 
     26 /*
     27 ** The following structure hold pointers to all of the SQLite API
     28 ** routines.
     29 */
     30 struct sqlite3_api_routines {
     31   void * (*aggregate_context)(sqlite3_context*,int nBytes);
     32   int  (*aggregate_count)(sqlite3_context*);
     33   int  (*bind_blob)(sqlite3_stmt*,int,const void*,int n,void(*)(void*));
     34   int  (*bind_double)(sqlite3_stmt*,int,double);
     35   int  (*bind_int)(sqlite3_stmt*,int,int);
     36   int  (*bind_int64)(sqlite3_stmt*,int,sqlite_int64);
     37   int  (*bind_null)(sqlite3_stmt*,int);
     38   int  (*bind_parameter_count)(sqlite3_stmt*);
     39   int  (*bind_parameter_index)(sqlite3_stmt*,const char*zName);
     40   const char * (*bind_parameter_name)(sqlite3_stmt*,int);
     41   int  (*bind_text)(sqlite3_stmt*,int,const char*,int n,void(*)(void*));
     42   int  (*bind_text16)(sqlite3_stmt*,int,const void*,int,void(*)(void*));
     43   int  (*bind_value)(sqlite3_stmt*,int,const sqlite3_value*);
     44   int  (*busy_handler)(sqlite3*,int(*)(void*,int),void*);
     45   int  (*busy_timeout)(sqlite3*,int ms);
     46   int  (*changes)(sqlite3*);
     47   int  (*close)(sqlite3*);
     48   int  (*collation_needed)(sqlite3*,void*,void(*)(void*,sqlite3*,int eTextRep,const char*));
     49   int  (*collation_needed16)(sqlite3*,void*,void(*)(void*,sqlite3*,int eTextRep,const void*));
     50   const void * (*column_blob)(sqlite3_stmt*,int iCol);
     51   int  (*column_bytes)(sqlite3_stmt*,int iCol);
     52   int  (*column_bytes16)(sqlite3_stmt*,int iCol);
     53   int  (*column_count)(sqlite3_stmt*pStmt);
     54   const char * (*column_database_name)(sqlite3_stmt*,int);
     55   const void * (*column_database_name16)(sqlite3_stmt*,int);
     56   const char * (*column_decltype)(sqlite3_stmt*,int i);
     57   const void * (*column_decltype16)(sqlite3_stmt*,int);
     58   double  (*column_double)(sqlite3_stmt*,int iCol);
     59   int  (*column_int)(sqlite3_stmt*,int iCol);
     60   sqlite_int64  (*column_int64)(sqlite3_stmt*,int iCol);
     61   const char * (*column_name)(sqlite3_stmt*,int);
     62   const void * (*column_name16)(sqlite3_stmt*,int);
     63   const char * (*column_origin_name)(sqlite3_stmt*,int);
     64   const void * (*column_origin_name16)(sqlite3_stmt*,int);
     65   const char * (*column_table_name)(sqlite3_stmt*,int);
     66   const void * (*column_table_name16)(sqlite3_stmt*,int);
     67   const unsigned char * (*column_text)(sqlite3_stmt*,int iCol);
     68   const void * (*column_text16)(sqlite3_stmt*,int iCol);
     69   int  (*column_type)(sqlite3_stmt*,int iCol);
     70   sqlite3_value* (*column_value)(sqlite3_stmt*,int iCol);
     71   void * (*commit_hook)(sqlite3*,int(*)(void*),void*);
     72   int  (*complete)(const char*sql);
     73   int  (*complete16)(const void*sql);
     74   int  (*create_collation)(sqlite3*,const char*,int,void*,int(*)(void*,int,const void*,int,const void*));
     75   int  (*create_collation16)(sqlite3*,const char*,int,void*,int(*)(void*,int,const void*,int,const void*));
     76   int  (*create_function)(sqlite3*,const char*,int,int,void*,void (*xFunc)(sqlite3_context*,int,sqlite3_value**),void (*xStep)(sqlite3_context*,int,sqlite3_value**),void (*xFinal)(sqlite3_context*));
     77   int  (*create_function16)(sqlite3*,const void*,int,int,void*,void (*xFunc)(sqlite3_context*,int,sqlite3_value**),void (*xStep)(sqlite3_context*,int,sqlite3_value**),void (*xFinal)(sqlite3_context*));
     78   int (*create_module)(sqlite3*,const char*,const sqlite3_module*,void*);
     79   int  (*data_count)(sqlite3_stmt*pStmt);
     80   sqlite3 * (*db_handle)(sqlite3_stmt*);
     81   int (*declare_vtab)(sqlite3*,const char*);
     82   int  (*enable_shared_cache)(int);
     83   int  (*errcode)(sqlite3*db);
     84   const char * (*errmsg)(sqlite3*);
     85   const void * (*errmsg16)(sqlite3*);
     86   int  (*exec)(sqlite3*,const char*,sqlite3_callback,void*,char**);
     87   int  (*expired)(sqlite3_stmt*);
     88   int  (*finalize)(sqlite3_stmt*pStmt);
     89   void  (*free)(void*);
     90   void  (*free_table)(char**result);
     91   int  (*get_autocommit)(sqlite3*);
     92   void * (*get_auxdata)(sqlite3_context*,int);
     93   int  (*get_table)(sqlite3*,const char*,char***,int*,int*,char**);
     94   int  (*global_recover)(void);
     95   void  (*interruptx)(sqlite3*);
     96   sqlite_int64  (*last_insert_rowid)(sqlite3*);
     97   const char * (*libversion)(void);
     98   int  (*libversion_number)(void);
     99   void *(*malloc)(int);
    100   char * (*mprintf)(const char*,...);
    101   int  (*open)(const char*,sqlite3**);
    102   int  (*open16)(const void*,sqlite3**);
    103   int  (*prepare)(sqlite3*,const char*,int,sqlite3_stmt**,const char**);
    104   int  (*prepare16)(sqlite3*,const void*,int,sqlite3_stmt**,const void**);
    105   void * (*profile)(sqlite3*,void(*)(void*,const char*,sqlite_uint64),void*);
    106   void  (*progress_handler)(sqlite3*,int,int(*)(void*),void*);
    107   void *(*realloc)(void*,int);
    108   int  (*reset)(sqlite3_stmt*pStmt);
    109   void  (*result_blob)(sqlite3_context*,const void*,int,void(*)(void*));
    110   void  (*result_double)(sqlite3_context*,double);
    111   void  (*result_error)(sqlite3_context*,const char*,int);
    112   void  (*result_error16)(sqlite3_context*,const void*,int);
    113   void  (*result_int)(sqlite3_context*,int);
    114   void  (*result_int64)(sqlite3_context*,sqlite_int64);
    115   void  (*result_null)(sqlite3_context*);
    116   void  (*result_text)(sqlite3_context*,const char*,int,void(*)(void*));
    117   void  (*result_text16)(sqlite3_context*,const void*,int,void(*)(void*));
    118   void  (*result_text16be)(sqlite3_context*,const void*,int,void(*)(void*));
    119   void  (*result_text16le)(sqlite3_context*,const void*,int,void(*)(void*));
    120   void  (*result_value)(sqlite3_context*,sqlite3_value*);
    121   void * (*rollback_hook)(sqlite3*,void(*)(void*),void*);
    122   int  (*set_authorizer)(sqlite3*,int(*)(void*,int,const char*,const char*,const char*,const char*),void*);
    123   void  (*set_auxdata)(sqlite3_context*,int,void*,void (*)(void*));
    124   char * (*snprintf)(int,char*,const char*,...);
    125   int  (*step)(sqlite3_stmt*);
    126   int  (*table_column_metadata)(sqlite3*,const char*,const char*,const char*,char const**,char const**,int*,int*,int*);
    127   void  (*thread_cleanup)(void);
    128   int  (*total_changes)(sqlite3*);
    129   void * (*trace)(sqlite3*,void(*xTrace)(void*,const char*),void*);
    130   int  (*transfer_bindings)(sqlite3_stmt*,sqlite3_stmt*);
    131   void * (*update_hook)(sqlite3*,void(*)(void*,int ,char const*,char const*,sqlite_int64),void*);
    132   void * (*user_data)(sqlite3_context*);
    133   const void * (*value_blob)(sqlite3_value*);
    134   int  (*value_bytes)(sqlite3_value*);
    135   int  (*value_bytes16)(sqlite3_value*);
    136   double  (*value_double)(sqlite3_value*);
    137   int  (*value_int)(sqlite3_value*);
    138   sqlite_int64  (*value_int64)(sqlite3_value*);
    139   int  (*value_numeric_type)(sqlite3_value*);
    140   const unsigned char * (*value_text)(sqlite3_value*);
    141   const void * (*value_text16)(sqlite3_value*);
    142   const void * (*value_text16be)(sqlite3_value*);
    143   const void * (*value_text16le)(sqlite3_value*);
    144   int  (*value_type)(sqlite3_value*);
    145   char *(*vmprintf)(const char*,va_list);
    146   int (*overload_function)(sqlite3*, const char *zFuncName, int nArg);
    147   int (*prepare_v2)(sqlite3*,const char*,int,sqlite3_stmt**,const char**);
    148   int (*prepare16_v2)(sqlite3*,const void*,int,sqlite3_stmt**,const void**);
    149   int (*clear_bindings)(sqlite3_stmt*);
    150 };
    151 
    152 /*
    153 ** The following macros redefine the API routines so that they are
    154 ** redirected throught the global sqlite3_api structure.
    155 **
    156 ** This header file is also used by the loadext.c source file
    157 ** (part of the main SQLite library - not an extension) so that
    158 ** it can get access to the sqlite3_api_routines structure
    159 ** definition.  But the main library does not want to redefine
    160 ** the API.  So the redefinition macros are only valid if the
    161 ** SQLITE_CORE macros is undefined.
    162 */
    163 #ifndef SQLITE_CORE
    164 #define sqlite3_aggregate_context      sqlite3_api->aggregate_context
    165 #define sqlite3_aggregate_count        sqlite3_api->aggregate_count
    166 #define sqlite3_bind_blob              sqlite3_api->bind_blob
    167 #define sqlite3_bind_double            sqlite3_api->bind_double
    168 #define sqlite3_bind_int               sqlite3_api->bind_int
    169 #define sqlite3_bind_int64             sqlite3_api->bind_int64
    170 #define sqlite3_bind_null              sqlite3_api->bind_null
    171 #define sqlite3_bind_parameter_count   sqlite3_api->bind_parameter_count
    172 #define sqlite3_bind_parameter_index   sqlite3_api->bind_parameter_index
    173 #define sqlite3_bind_parameter_name    sqlite3_api->bind_parameter_name
    174 #define sqlite3_bind_text              sqlite3_api->bind_text
    175 #define sqlite3_bind_text16            sqlite3_api->bind_text16
    176 #define sqlite3_bind_value             sqlite3_api->bind_value
    177 #define sqlite3_busy_handler           sqlite3_api->busy_handler
    178 #define sqlite3_busy_timeout           sqlite3_api->busy_timeout
    179 #define sqlite3_changes                sqlite3_api->changes
    180 #define sqlite3_close                  sqlite3_api->close
    181 #define sqlite3_collation_needed       sqlite3_api->collation_needed
    182 #define sqlite3_collation_needed16     sqlite3_api->collation_needed16
    183 #define sqlite3_column_blob            sqlite3_api->column_blob
    184 #define sqlite3_column_bytes           sqlite3_api->column_bytes
    185 #define sqlite3_column_bytes16         sqlite3_api->column_bytes16
    186 #define sqlite3_column_count           sqlite3_api->column_count
    187 #define sqlite3_column_database_name   sqlite3_api->column_database_name
    188 #define sqlite3_column_database_name16 sqlite3_api->column_database_name16
    189 #define sqlite3_column_decltype        sqlite3_api->column_decltype
    190 #define sqlite3_column_decltype16      sqlite3_api->column_decltype16
    191 #define sqlite3_column_double          sqlite3_api->column_double
    192 #define sqlite3_column_int             sqlite3_api->column_int
    193 #define sqlite3_column_int64           sqlite3_api->column_int64
    194 #define sqlite3_column_name            sqlite3_api->column_name
    195 #define sqlite3_column_name16          sqlite3_api->column_name16
    196 #define sqlite3_column_origin_name     sqlite3_api->column_origin_name
    197 #define sqlite3_column_origin_name16   sqlite3_api->column_origin_name16
    198 #define sqlite3_column_table_name      sqlite3_api->column_table_name
    199 #define sqlite3_column_table_name16    sqlite3_api->column_table_name16
    200 #define sqlite3_column_text            sqlite3_api->column_text
    201 #define sqlite3_column_text16          sqlite3_api->column_text16
    202 #define sqlite3_column_type            sqlite3_api->column_type
    203 #define sqlite3_column_value           sqlite3_api->column_value
    204 #define sqlite3_commit_hook            sqlite3_api->commit_hook
    205 #define sqlite3_complete               sqlite3_api->complete
    206 #define sqlite3_complete16             sqlite3_api->complete16
    207 #define sqlite3_create_collation       sqlite3_api->create_collation
    208 #define sqlite3_create_collation16     sqlite3_api->create_collation16
    209 #define sqlite3_create_function        sqlite3_api->create_function
    210 #define sqlite3_create_function16      sqlite3_api->create_function16
    211 #define sqlite3_create_module          sqlite3_api->create_module
    212 #define sqlite3_data_count             sqlite3_api->data_count
    213 #define sqlite3_db_handle              sqlite3_api->db_handle
    214 #define sqlite3_declare_vtab           sqlite3_api->declare_vtab
    215 #define sqlite3_enable_shared_cache    sqlite3_api->enable_shared_cache
    216 #define sqlite3_errcode                sqlite3_api->errcode
    217 #define sqlite3_errmsg                 sqlite3_api->errmsg
    218 #define sqlite3_errmsg16               sqlite3_api->errmsg16
    219 #define sqlite3_exec                   sqlite3_api->exec
    220 #define sqlite3_expired                sqlite3_api->expired
    221 #define sqlite3_finalize               sqlite3_api->finalize
    222 #define sqlite3_free                   sqlite3_api->free
    223 #define sqlite3_free_table             sqlite3_api->free_table
    224 #define sqlite3_get_autocommit         sqlite3_api->get_autocommit
    225 #define sqlite3_get_auxdata            sqlite3_api->get_auxdata
    226 #define sqlite3_get_table              sqlite3_api->get_table
    227 #define sqlite3_global_recover         sqlite3_api->global_recover
    228 #define sqlite3_interrupt              sqlite3_api->interruptx
    229 #define sqlite3_last_insert_rowid      sqlite3_api->last_insert_rowid
    230 #define sqlite3_libversion             sqlite3_api->libversion
    231 #define sqlite3_libversion_number      sqlite3_api->libversion_number
    232 #define sqlite3_malloc                 sqlite3_api->malloc
    233 #define sqlite3_mprintf                sqlite3_api->mprintf
    234 #define sqlite3_open                   sqlite3_api->open
    235 #define sqlite3_open16                 sqlite3_api->open16
    236 #define sqlite3_prepare                sqlite3_api->prepare
    237 #define sqlite3_prepare16              sqlite3_api->prepare16
    238 #define sqlite3_prepare_v2             sqlite3_api->prepare_v2
    239 #define sqlite3_prepare16_v2           sqlite3_api->prepare16_v2
    240 #define sqlite3_profile                sqlite3_api->profile
    241 #define sqlite3_progress_handler       sqlite3_api->progress_handler
    242 #define sqlite3_realloc                sqlite3_api->realloc
    243 #define sqlite3_reset                  sqlite3_api->reset
    244 #define sqlite3_result_blob            sqlite3_api->result_blob
    245 #define sqlite3_result_double          sqlite3_api->result_double
    246 #define sqlite3_result_error           sqlite3_api->result_error
    247 #define sqlite3_result_error16         sqlite3_api->result_error16
    248 #define sqlite3_result_int             sqlite3_api->result_int
    249 #define sqlite3_result_int64           sqlite3_api->result_int64
    250 #define sqlite3_result_null            sqlite3_api->result_null
    251 #define sqlite3_result_text            sqlite3_api->result_text
    252 #define sqlite3_result_text16          sqlite3_api->result_text16
    253 #define sqlite3_result_text16be        sqlite3_api->result_text16be
    254 #define sqlite3_result_text16le        sqlite3_api->result_text16le
    255 #define sqlite3_result_value           sqlite3_api->result_value
    256 #define sqlite3_rollback_hook          sqlite3_api->rollback_hook
    257 #define sqlite3_set_authorizer         sqlite3_api->set_authorizer
    258 #define sqlite3_set_auxdata            sqlite3_api->set_auxdata
    259 #define sqlite3_snprintf               sqlite3_api->snprintf
    260 #define sqlite3_step                   sqlite3_api->step
    261 #define sqlite3_table_column_metadata  sqlite3_api->table_column_metadata
    262 #define sqlite3_thread_cleanup         sqlite3_api->thread_cleanup
    263 #define sqlite3_total_changes          sqlite3_api->total_changes
    264 #define sqlite3_trace                  sqlite3_api->trace
    265 #define sqlite3_transfer_bindings      sqlite3_api->transfer_bindings
    266 #define sqlite3_update_hook            sqlite3_api->update_hook
    267 #define sqlite3_user_data              sqlite3_api->user_data
    268 #define sqlite3_value_blob             sqlite3_api->value_blob
    269 #define sqlite3_value_bytes            sqlite3_api->value_bytes
    270 #define sqlite3_value_bytes16          sqlite3_api->value_bytes16
    271 #define sqlite3_value_double           sqlite3_api->value_double
    272 #define sqlite3_value_int              sqlite3_api->value_int
    273 #define sqlite3_value_int64            sqlite3_api->value_int64
    274 #define sqlite3_value_numeric_type     sqlite3_api->value_numeric_type
    275 #define sqlite3_value_text             sqlite3_api->value_text
    276 #define sqlite3_value_text16           sqlite3_api->value_text16
    277 #define sqlite3_value_text16be         sqlite3_api->value_text16be
    278 #define sqlite3_value_text16le         sqlite3_api->value_text16le
    279 #define sqlite3_value_type             sqlite3_api->value_type
    280 #define sqlite3_vmprintf               sqlite3_api->vmprintf
    281 #define sqlite3_overload_function      sqlite3_api->overload_function
    282 #define sqlite3_prepare_v2             sqlite3_api->prepare_v2
    283 #define sqlite3_prepare16_v2           sqlite3_api->prepare16_v2
    284 #define sqlite3_clear_bindings         sqlite3_api->clear_bindings
    285 #endif /* SQLITE_CORE */
    286 
    287 #define SQLITE_EXTENSION_INIT1     const sqlite3_api_routines *sqlite3_api;
    288 #define SQLITE_EXTENSION_INIT2(v)  sqlite3_api = v;
    289 
    290 #endif /* _SQLITE3EXT_H_ */
    291