api.js

const ffi = require('ffi-napi');
const ref = require('ref-napi');
const Struct = require('ref-struct-di')(ref);
const Union = require('ref-union-di')(ref);
const ArrayType = require('ref-array-di')(ref);

var e = (typeof process.env.sdl2_global_export == 'undefined') ? exports : global;
var library_exports = [];
var library_functions = [];
var enerator;

exports.defines = {
  SDL_ASSERT_LEVEL: 0,
  SDL_DYNAMIC_API: 1,
  HAVE_STDIO_H: 1
};
if ( /*typeof process.env.sdl2_defines == 'undefined'*/ true) {
  if (process.platform == 'win32')
    exports.defines['__WIN32__'] = exports.defines['SDL_VIDEO_DRIVER_WINDOWS'] = 1;
  if (process.platform == 'android')
    exports.defines['__ANDROID__'] = exports.defines['SDL_VIDEO_DRIVER_ANDROID'] = 1;
}
if (typeof process.env.sdl2_defines !== 'undefined') {
  const str_defines = process.env.sdl2_defines.split(';');
  for (var i = 0; i < str_defines.length; i++) {
    const str_define = str_defines[i];
    if (str_define.includes('=')) {
      exports.defines[str_define.split('=')[0].trim()] = eval(str_define.split('=')[1].trim());
      continue;
    }
    exports.defines[str_define.trim()] = true;
  }
}
exports.e = e;
exports.l = {};
exports.library = {};
exports.image_library = {};
exports.ttf_library = {};
exports.mixer_library = {};
exports.net_library = {};
exports.gfx_library = {};
exports.ffi = ffi;
exports.ref = ref;
exports.Func = function(...data) {
  // data[0] += '*';
  return ffi.Function(...data);
}
exports.SFunc = ffi.Function;
exports.Struct = Struct;
exports.Union = Union;
exports.ArrayType = ArrayType;
exports.library_exports = library_exports;
exports.library_functions = library_functions;
exports.ignore_list = [];
exports.clear_ignore = function(dict, ignore_list) {
  for (var i = 0; i < ignore_list.length; i++) {
    delete dict[ignore_list[i]];
  }
  return dict;
}
exports.join_exports = function() {
  return exports.clear_ignore(Object.assign({}, ...exports.library_exports), exports.ignore_list);
}
exports.join_functions = function() {
  return Object.assign({}, ...exports.library_functions);
}
exports.from_hex = function(hex_str) {
  return parseInt(hex_str, 16);
}
exports.en = function(reset) {
  if (typeof reset !== 'undefined')
    enerator = reset;
  return enerator++;
}
exports.encoder = new TextEncoder();
exports.decoder = new TextDecoder();
exports.default_terminator = '\x00';
exports.from_utf16 = function(str, terminator = exports.default_terminator) {
  str += terminator;
  var arr = new Uint16Array(str.length);
  for (var i = 0; i < str.length; i++) {
    arr[i] = str.charCodeAt(i);
  }
  return arr;
}
exports.to_utf16 = function(arr, terminator = exports.default_terminator) {
  return exports.trim_terminator(String.fromCharCode(...arr), terminator);
}
exports.from_utf8 = function(str, terminator = exports.default_terminator) {
  return encoder.encode(str + terminator);
}
exports.to_utf8 = function(arr, terminator = exports.default_terminator) {
  return exports.trim_terminator(decoder.decode(arr), terminator);
}
exports.trim_terminator = function(str, terminator = exports.default_terminator) {
  const terminator_index = str.indexOf(terminator);
  if (!terminator || terminator_index < 0)
    return str;
  return str.substr(0, terminator_index);
}
exports.push_export = function(sublibrary_export) {
  library_exports.push(sublibrary_export);
}
exports.push_functions = function(sublibrary_functions) {
  library_functions.push(sublibrary_functions);
}