gecko/toolkit/components/sqlite/sqlite_internal.js

324 lines
9.6 KiB
JavaScript

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/**
* This file defines an Sqlite object containing js-ctypes bindings for
* sqlite3. It should be included from a worker thread using require.
*
* It serves the following purposes:
* - opens libxul;
* - defines sqlite3 API functions;
* - defines the necessary sqlite3 types.
*/
"use strict";
importScripts("resource://gre/modules/workers/require.js");
let SharedAll = require(
"resource://gre/modules/osfile/osfile_shared_allthreads.jsm");
// Open the sqlite3 library.
let path;
if (SharedAll.Constants.Sys.Name === "Android") {
path = ctypes.libraryName("sqlite3");
} else if (SharedAll.Constants.Win) {
path = ctypes.libraryName("nss3");
} else {
path = SharedAll.Constants.Path.libxul;
}
let lib;
try {
lib = ctypes.open(path);
} catch (ex) {
throw new Error("Could not open system library: " + ex.message);
}
let declareLazyFFI = SharedAll.declareLazyFFI;
let Type = Object.create(SharedAll.Type);
/**
* Opaque Structure |sqlite3_ptr|.
* |sqlite3_ptr| is equivalent to a void*.
*/
Type.sqlite3_ptr = Type.voidptr_t.withName("sqlite3_ptr");
/**
* |sqlite3_stmt_ptr| an instance of an object representing a single SQL
* statement.
* |sqlite3_stmt_ptr| is equivalent to a void*.
*/
Type.sqlite3_stmt_ptr = Type.voidptr_t.withName("sqlite3_stmt_ptr");
/**
* |sqlite3_destructor_ptr| a constant defining a special destructor behaviour.
* |sqlite3_destructor_ptr| is equivalent to a void*.
*/
Type.sqlite3_destructor_ptr = Type.voidptr_t.withName(
"sqlite3_destructor_ptr");
/**
* A C double.
*/
Type.double = new SharedAll.Type("double", ctypes.double);
/**
* |sqlite3_int64| typedef for 64-bit integer.
*/
Type.sqlite3_int64 = Type.int64_t.withName("sqlite3_int64");
/**
* Sqlite3 constants.
*/
let Constants = {};
/**
* |SQLITE_STATIC| a special value for the destructor that is passed as an
* argument to routines like bind_blob, bind_text and bind_text16. It means that
* the content pointer is constant and will never change and does need to be
* destroyed.
*/
Constants.SQLITE_STATIC = Type.sqlite3_destructor_ptr.implementation(0);
/**
* |SQLITE_TRANSIENT| a special value for the destructor that is passed as an
* argument to routines like bind_blob, bind_text and bind_text16. It means that
* the content will likely change in the near future and that SQLite should make
* its own private copy of the content before returning.
*/
Constants.SQLITE_TRANSIENT = Type.sqlite3_destructor_ptr.implementation(-1);
/**
* |SQLITE_OK|
* Successful result.
*/
Constants.SQLITE_OK = 0;
/**
* |SQLITE_ROW|
* sqlite3_step() has another row ready.
*/
Constants.SQLITE_ROW = 100;
/**
* |SQLITE_DONE|
* sqlite3_step() has finished executing.
*/
Constants.SQLITE_DONE = 101;
let Sqlite3 = {
Constants: Constants,
Type: Type
};
declareLazyFFI(Sqlite3, "open", lib, "sqlite3_open", null,
/*return*/ Type.int,
/*path*/ Type.char.in_ptr,
/*db handle*/ Type.sqlite3_ptr.out_ptr);
declareLazyFFI(Sqlite3, "open_v2", lib, "sqlite3_open_v2", null,
/*return*/ Type.int,
/*path*/ Type.char.in_ptr,
/*db handle*/ Type.sqlite3_ptr.out_ptr,
/*flags*/ Type.int,
/*VFS*/ Type.char.in_ptr);
declareLazyFFI(Sqlite3, "close", lib, "sqlite3_close", null,
/*return*/ Type.int,
/*db handle*/ Type.sqlite3_ptr);
declareLazyFFI(Sqlite3, "prepare_v2", lib, "sqlite3_prepare_v2", null,
/*return*/ Type.int,
/*db handle*/ Type.sqlite3_ptr,
/*zSql*/ Type.char.in_ptr,
/*nByte*/ Type.int,
/*statement*/ Type.sqlite3_stmt_ptr.out_ptr,
/*unused*/ Type.cstring.out_ptr);
declareLazyFFI(Sqlite3, "step", lib, "sqlite3_step", null,
/*return*/ Type.int,
/*statement*/ Type.sqlite3_stmt_ptr);
declareLazyFFI(Sqlite3, "finalize", lib, "sqlite3_finalize", null,
/*return*/ Type.int,
/*statement*/ Type.sqlite3_stmt_ptr);
declareLazyFFI(Sqlite3, "reset", lib, "sqlite3_reset", null,
/*return*/ Type.int,
/*statement*/ Type.sqlite3_stmt_ptr);
declareLazyFFI(Sqlite3, "column_int", lib, "sqlite3_column_int", null,
/*return*/ Type.int,
/*statement*/ Type.sqlite3_stmt_ptr,
/*col*/ Type.int);
declareLazyFFI(Sqlite3, "column_blob", lib, "sqlite3_column_blob", null,
/*return*/ Type.voidptr_t,
/*statement*/ Type.sqlite3_stmt_ptr,
/*col*/ Type.int);
declareLazyFFI(Sqlite3, "column_bytes", lib, "sqlite3_column_bytes", null,
/*return*/ Type.int,
/*statement*/ Type.sqlite3_stmt_ptr,
/*col*/ Type.int);
declareLazyFFI(Sqlite3, "column_bytes16", lib, "sqlite3_column_bytes16",
null,
/*return*/ Type.int,
/*statement*/ Type.sqlite3_stmt_ptr,
/*col*/ Type.int);
declareLazyFFI(Sqlite3, "column_double", lib, "sqlite3_column_double", null,
/*return*/ Type.double,
/*statement*/ Type.sqlite3_stmt_ptr,
/*col*/ Type.int);
declareLazyFFI(Sqlite3, "column_int64", lib, "sqlite3_column_int64", null,
/*return*/ Type.sqlite3_int64,
/*statement*/ Type.sqlite3_stmt_ptr,
/*col*/ Type.int);
declareLazyFFI(Sqlite3, "column_text", lib, "sqlite3_column_text", null,
/*return*/ Type.cstring,
/*statement*/ Type.sqlite3_stmt_ptr,
/*col*/ Type.int);
declareLazyFFI(Sqlite3, "column_text16", lib, "sqlite3_column_text16", null,
/*return*/ Type.wstring,
/*statement*/ Type.sqlite3_stmt_ptr,
/*col*/ Type.int);
declareLazyFFI(Sqlite3, "bind_int", lib, "sqlite3_bind_int", null,
/*return*/ Type.int,
/*statement*/ Type.sqlite3_stmt_ptr,
/*index*/ Type.int,
/*value*/ Type.int);
declareLazyFFI(Sqlite3, "bind_int64", lib, "sqlite3_bind_int64", null,
/*return*/ Type.int,
/*statement*/ Type.sqlite3_stmt_ptr,
/*index*/ Type.int,
/*value*/ Type.sqlite3_int64);
declareLazyFFI(Sqlite3, "bind_double", lib, "sqlite3_bind_double", null,
/*return*/ Type.int,
/*statement*/ Type.sqlite3_stmt_ptr,
/*index*/ Type.int,
/*value*/ Type.double);
declareLazyFFI(Sqlite3, "bind_null", lib, "sqlite3_bind_null", null,
/*return*/ Type.int,
/*statement*/ Type.sqlite3_stmt_ptr,
/*index*/ Type.int);
declareLazyFFI(Sqlite3, "bind_zeroblob", lib, "sqlite3_bind_zeroblob", null,
/*return*/ Type.int,
/*statement*/ Type.sqlite3_stmt_ptr,
/*index*/ Type.int,
/*nBytes*/ Type.int);
declareLazyFFI(Sqlite3, "bind_text", lib, "sqlite3_bind_text", null,
/*return*/ Type.int,
/*statement*/ Type.sqlite3_stmt_ptr,
/*index*/ Type.int,
/*value*/ Type.cstring,
/*nBytes*/ Type.int,
/*destructor*/ Type.sqlite3_destructor_ptr);
declareLazyFFI(Sqlite3, "bind_text16", lib, "sqlite3_bind_text16", null,
/*return*/ Type.int,
/*statement*/ Type.sqlite3_stmt_ptr,
/*index*/ Type.int,
/*value*/ Type.wstring,
/*nBytes*/ Type.int,
/*destructor*/ Type.sqlite3_destructor_ptr);
declareLazyFFI(Sqlite3, "bind_blob", lib, "sqlite3_bind_blob", null,
/*return*/ Type.int,
/*statement*/ Type.sqlite3_stmt_ptr,
/*index*/ Type.int,
/*value*/ Type.voidptr_t,
/*nBytes*/ Type.int,
/*destructor*/ Type.sqlite3_destructor_ptr);
module.exports = {
get Constants() {
return Sqlite3.Constants;
},
get Type() {
return Sqlite3.Type;
},
get open() {
return Sqlite3.open;
},
get open_v2() {
return Sqlite3.open_v2;
},
get close() {
return Sqlite3.close;
},
get prepare_v2() {
return Sqlite3.prepare_v2;
},
get step() {
return Sqlite3.step;
},
get finalize() {
return Sqlite3.finalize;
},
get reset() {
return Sqlite3.reset;
},
get column_int() {
return Sqlite3.column_int;
},
get column_blob() {
return Sqlite3.column_blob;
},
get column_bytes() {
return Sqlite3.column_bytes;
},
get column_bytes16() {
return Sqlite3.column_bytes16;
},
get column_double() {
return Sqlite3.column_double;
},
get column_int64() {
return Sqlite3.column_int64;
},
get column_text() {
return Sqlite3.column_text;
},
get column_text16() {
return Sqlite3.column_text16;
},
get bind_int() {
return Sqlite3.bind_int;
},
get bind_int64() {
return Sqlite3.bind_int64;
},
get bind_double() {
return Sqlite3.bind_double;
},
get bind_null() {
return Sqlite3.bind_null;
},
get bind_zeroblob() {
return Sqlite3.bind_zeroblob;
},
get bind_text() {
return Sqlite3.bind_text;
},
get bind_text16() {
return Sqlite3.bind_text16;
},
get bind_blob() {
return Sqlite3.bind_blob;
}
};