CLib.sys.mjs - mozsearch

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/* 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/. */

import { ctypes } from "resource://gre/modules/ctypes.sys.mjs";

var OS = Services.appinfo.OS.toLowerCase();

// type defs

var FILE = ctypes.StructType("FILE");

var fname_t = ctypes.char.ptr;

var wchar_t = ctypes.char16_t;

// Set the abi and path to CLib based on the OS.

var libcAbi, libcPath;

var strdup = "strdup";

var fopen = "fopen";

switch (OS) {

  case "win32":

  case "winnt":

    libcAbi = ctypes.winapi_abi;

    libcPath = ctypes.libraryName("msvcrt");

    strdup = "_strdup";

    fopen = "_wfopen";

    fname_t = wchar_t.ptr;

    break;

  case "darwin":

  case "dragonfly":

  case "netbsd":

  case "openbsd":

    libcAbi = ctypes.default_abi;

    libcPath = ctypes.libraryName("c");

    break;

  case "freebsd":

    libcAbi = ctypes.default_abi;

    libcPath = "libc.so.7";

    break;

  case "linux":

    libcAbi = ctypes.default_abi;

    libcPath = "libc.so.6";

    break;

  default:

    throw new Error("Unknown OS");

var libc = ctypes.open(libcPath);

export var CLib = {

  FILE,

  memcmp: libc.declare(

    "memcmp",

    libcAbi,

    ctypes.int,

    ctypes.void_t.ptr,

    ctypes.void_t.ptr,

    ctypes.size_t

),

  free: libc.declare("free", libcAbi, ctypes.void_t, ctypes.void_t.ptr),

  strdup: libc.declare(strdup, libcAbi, ctypes.char.ptr, ctypes.char.ptr),

  fclose: libc.declare("fclose", libcAbi, ctypes.int, FILE.ptr),

  fopen: libc.declare(fopen, libcAbi, FILE.ptr, fname_t, fname_t),

};