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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,220 @@ | ||
| #include "dbd_duckdb.h" | ||
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| int dbd_duckdb_statement_create(lua_State *L, connection_t *conn, const char *sql_query); | ||
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| /* | ||
| * connection,err = DBD.DuckDB.New(dbfile) | ||
| */ | ||
| static int connection_new(lua_State *L) { | ||
| int n = lua_gettop(L); | ||
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| char *errmessage; | ||
| const char *db = NULL; | ||
| connection_t *conn = NULL; | ||
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| switch(n) { | ||
| default: | ||
| /* | ||
| * db is the only parameter for now | ||
| */ | ||
| db = luaL_checkstring(L, 1); | ||
| } | ||
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| conn = (connection_t *)lua_newuserdata(L, sizeof(connection_t)); | ||
| conn->autocommit = 1; | ||
| conn->in_transaction = 0; | ||
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| if (duckdb_open_ext( db, &(conn->db), NULL, &errmessage ) == DuckDBError) { | ||
| lua_pushnil(L); | ||
| lua_pushfstring(L, DBI_ERR_CONNECTION_FAILED, errmessage); | ||
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| duckdb_free(errmessage); | ||
| return 2; | ||
| } | ||
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| if (duckdb_connect( conn->db, &(conn->conn) ) == DuckDBError) { | ||
| duckdb_close( &(conn->db) ); | ||
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| lua_pushnil(L); | ||
| lua_pushfstring(L, DBI_ERR_CONNECTION_FAILED); | ||
| return 2; | ||
| } | ||
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| luaL_getmetatable(L, DBD_DUCKDB_CONNECTION); | ||
| lua_setmetatable(L, -2); | ||
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| return 1; | ||
| } | ||
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| static int connection_prepare(lua_State *L) { | ||
| connection_t *conn = (connection_t *)luaL_checkudata(L, 1, DBD_DUCKDB_CONNECTION); | ||
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| if (conn->conn) { | ||
| return dbd_duckdb_statement_create(L, conn, luaL_checkstring(L, 2)); | ||
| } | ||
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| lua_pushnil(L); | ||
| lua_pushstring(L, DBI_ERR_DB_UNAVAILABLE); | ||
| return 2; | ||
| } | ||
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| static int connection_commit(lua_State *L) { | ||
| connection_t *conn = (connection_t *)luaL_checkudata(L, 1, DBD_DUCKDB_CONNECTION); | ||
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| if (duckdb_query(conn->conn, "COMMIT;", NULL) == DuckDBError) { | ||
| lua_pushboolean(L, 0); | ||
| return 0; | ||
| } | ||
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| conn->in_transaction = 0; | ||
| lua_pushboolean(L, 1); | ||
| return 1; | ||
| } | ||
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| static int connection_rollback(lua_State *L) { | ||
| connection_t *conn = (connection_t *)luaL_checkudata(L, 1, DBD_DUCKDB_CONNECTION); | ||
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| if (duckdb_query(conn->conn, "ROLLBACK;", NULL) == DuckDBError) { | ||
| lua_pushboolean(L, 0); | ||
| return 0; | ||
| } | ||
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| conn->in_transaction = 0; | ||
| lua_pushboolean(L, 1); | ||
| return 1; | ||
| } | ||
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| static int connection_autocommit(lua_State *L) { | ||
| connection_t *conn = (connection_t *)luaL_checkudata(L, 1, DBD_DUCKDB_CONNECTION); | ||
| bool mode = lua_toboolean(L, 1); | ||
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| // no change | ||
| if (conn->autocommit == mode) { | ||
| lua_pushboolean(L, 1); | ||
| return 1; | ||
| } | ||
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| // enable autocommit while in a transaction means commit it | ||
| if (conn->in_transaction) { | ||
| if (mode) { | ||
| if (duckdb_query(conn->conn, "COMMIT;", NULL) == DuckDBError) { | ||
| lua_pushboolean(L, 0); | ||
| return 0; | ||
| } | ||
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| conn->in_transaction = 0; | ||
| } | ||
| } | ||
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| conn->autocommit = mode; | ||
| lua_pushboolean(L, 1); | ||
| return 1; | ||
| } | ||
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| static int connection_ping(lua_State *L) { | ||
| connection_t *conn = (connection_t *)luaL_checkudata(L, 1, DBD_DUCKDB_CONNECTION); | ||
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| int ok = 1; | ||
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| if (!conn->db) { | ||
| ok = 0; | ||
| } else if (!conn->conn) { | ||
| ok = 0; | ||
| } | ||
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| lua_pushboolean(L, ok); | ||
| return 1; | ||
| } | ||
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| static int connection_close(lua_State *L) { | ||
| connection_t *conn = (connection_t *)luaL_checkudata(L, 1, DBD_DUCKDB_CONNECTION); | ||
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| duckdb_disconnect(&(conn->conn)); | ||
| conn->conn = NULL; | ||
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| duckdb_close(&(conn->db)); | ||
| conn->db = NULL; | ||
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| lua_pushboolean(L, 1); | ||
| return 1; | ||
| } | ||
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| /* | ||
| * last_id = connection:last_id() | ||
| */ | ||
| static int connection_lastid(lua_State *L) { | ||
| luaL_error(L, DBI_ERR_NOT_IMPLEMENTED, DBD_DUCKDB_CONNECTION, "last_id"); | ||
| return 0; | ||
| } | ||
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| /* | ||
| * num_rows = statement:rowcount() | ||
| */ | ||
| static int connection_quote(lua_State *L) { | ||
| luaL_error(L, DBI_ERR_NOT_IMPLEMENTED, DBD_DUCKDB_CONNECTION, "quote"); | ||
| return 0; | ||
| } | ||
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| /* | ||
| * __gc | ||
| */ | ||
| static int connection_gc(lua_State *L) { | ||
| /* always close the connection */ | ||
| connection_close(L); | ||
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| return 0; | ||
| } | ||
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| /* | ||
| * __tostring | ||
| */ | ||
| static int connection_tostring(lua_State *L) { | ||
| connection_t *conn = (connection_t *)luaL_checkudata(L, 1, DBD_DUCKDB_CONNECTION); | ||
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| lua_pushfstring(L, "%s: %p", DBD_DUCKDB_CONNECTION, conn); | ||
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| return 1; | ||
| } | ||
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| int dbd_duckdb_connection(lua_State *L) { | ||
| /* | ||
| * instance methods | ||
| */ | ||
| static const luaL_Reg connection_methods[] = { | ||
| {"autocommit", connection_autocommit}, | ||
| {"close", connection_close}, | ||
| {"commit", connection_commit}, | ||
| {"ping", connection_ping}, | ||
| {"prepare", connection_prepare}, | ||
| {"quote", connection_quote}, | ||
| {"rollback", connection_rollback}, | ||
| {"last_id", connection_lastid}, | ||
| {NULL, NULL} | ||
| }; | ||
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| /* | ||
| * class methods | ||
| */ | ||
| static const luaL_Reg connection_class_methods[] = { | ||
| {"New", connection_new}, | ||
| {NULL, NULL} | ||
| }; | ||
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| dbd_register(L, DBD_DUCKDB_CONNECTION, | ||
| connection_methods, connection_class_methods, | ||
| connection_gc, connection_tostring); | ||
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| return 1; | ||
| } |
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