TypeScript ffi Library Examples

Example #1

File: node_readline.ts Project: catb0t/mal

import * as path from "path";
import * as ffi from "ffi";
import * as fs from "fs";

// IMPORTANT: choose one
const RL_LIB = "libreadline";  // NOTE: libreadline is GPL
// var RL_LIB = "libedit";

const HISTORY_FILE = path.join(process.env.HOME || ".", ".mal-history");

const rllib = ffi.Library(RL_LIB, {
    "readline": ["string", ["string"]],
    "add_history": ["int", ["string"]],
});

let rlHistoryLoaded = false;

export function readline(prompt?: string): string | null {
    prompt = prompt || "user> ";

    if (!rlHistoryLoaded) {
        rlHistoryLoaded = true;
        let lines: string[] = [];
        if (fs.existsSync(HISTORY_FILE)) {
            lines = fs.readFileSync(HISTORY_FILE).toString().split("\n");
        }
        // Max of 2000 lines
        lines = lines.slice(Math.max(lines.length - 2000, 0));
        for (let i = 0; i < lines.length; i++) {
            if (lines[i]) { rllib.add_history(lines[i]); }
        }

Example #2

File: ffi-lib.ts Project: Zorbing/node-lgsdk

export const CBContext = Struct({
	'gkeyCallBack': ffi.Function('void *', [GkeyCode, wchar_string, 'void *'])/*logiGkeyCB*/, // 'pointer',
	'gkeyContext': 'void *',
});
export const CBContextPtr = ref.refType(CBContext);


export const gkeyLib = ffi.Library(libPath('gkey'), {
	// Enable the Gkey SDK by calling this function
	'LogiGkeyInit': ['bool', [CBContextPtr/*logiGkeyCBContext* gkeyCBContext*/]],
	// Enable the Gkey SDK by calling this function if not using callback. Use this initialization if using Unreal Engine
	'LogiGkeyInitWithoutCallback': ['bool', []],
	// Enable the Gkey SDK be calling this function if not using context. Use this initialization if working with Unity Engine
	'LogiGkeyInitWithoutContext': ['bool', ['pointer'/*logiGkeyCB gkeyCallBack*/]],
	// Check if a mouse button is currently pressed
	'LogiGkeyIsMouseButtonPressed': ['bool', ['int'/*const int buttonNumber*/]],
	// Get friendly name for mouse button
	'LogiGkeyGetMouseButtonString': [wchar_string, ['int'/*const int buttonNumber*/]],
	// Check if a keyboard G-key is currently pressed
	'LogiGkeyIsKeyboardGkeyPressed': ['bool', ['int'/*const int gkeyNumber*/, 'int'/*const int modeNumber*/]],
	// Get friendly name for G-key
	'LogiGkeyGetKeyboardGkeyString': [wchar_string, ['int'/*const int gkeyNumber*/, 'int'/*const int modeNumber*/]],
	// Disable the Gkey SDK, free up all the resources.
	'LogiGkeyShutdown': ['void', []],
});


export function isButtonNumberValid(buttonNumber: mouseButtonNumber | number): buttonNumber is mouseButtonNumber
{
	return Number.isInteger(buttonNumber) && buttonNumber >= 0 && buttonNumber <= LOGITECH_MAX_MOUSE_BUTTONS;
}

Example #3

File: ffi-lib.ts Project: Zorbing/node-lgsdk

	// Color LCD functions
	LogiLcdColorSetBackground: Function;
	LogiLcdColorSetTitle: Function;
	LogiLcdColorSetText: Function;
}


export const lcdLib: LcdLib = ffi.Library(libPath('lcd'), {
	'LogiLcdInit': ['bool', [wchar_string /*friendlyName*/, 'int' /*lcdType*/]],
	'LogiLcdIsConnected': ['bool', ['int' /*lcdType*/]],
	'LogiLcdIsButtonPressed': ['bool', ['int' /*button*/]],
	'LogiLcdUpdate': ['void', []],
	'LogiLcdShutdown': ['void', []],

	// Monochrome LCD functions
	'LogiLcdMonoSetBackground': ['bool', [byteArray /*monoBitmap[]*/]],
	'LogiLcdMonoSetText': ['bool', ['int' /*lineNumber*/, wchar_string /*text*/]],

	// Color LCD functions
	'LogiLcdColorSetBackground': ['bool', [byteArray /*colorBitmap[]*/]],
	'LogiLcdColorSetTitle': ['bool', [wchar_string /*text*/, 'int' /*red = 255*/, 'int' /*green = 255*/, 'int' /*blue = 255*/]],
	'LogiLcdColorSetText': ['bool', ['int' /*lineNumber*/, wchar_string /*text*/, 'int' /*red = 255*/, 'int' /*green = 255*/, 'int' /*blue = 255*/]],
});

export function isButtonValid(button: number)
{
	return isButtonValidForColor(button) || isButtonValidForMono(button);
}

export function isButtonValidForMono(button: number)
{

Example #4

File: unwindmc.ts Project: coffeecup-winner/unwind-mc

import * as ffi from 'ffi'
import * as ref from 'ref'

const _unwindmc = ffi.Library('libunwindmc', {
    version: ['string', []],
    init: ['bool', ['pointer']],
    open_binary_file: ['bool', ['string']],
    open_db: ['bool', ['string']],
    save_db: ['void', ['string']],
    get_functions: ['void', ['string', 'size_t']],
    get_instructions: ['void', ['uint64', 'string', 'size_t']],
    get_il: ['bool', ['uint64', 'string', 'size_t']],
    get_flow_blocks: ['bool', ['uint64', 'string', 'size_t']],
    decompile_il: ['void', []],
    analyze_control_flow: ['void', []]
})

const _buffer = Buffer.alloc(16 * 1024 * 1024)
var _logCallback: Buffer;

export interface Function {
    readonly address: number,
    readonly status: string,
    readonly callingConvention: 'Unknown' | 'Stdcall',
    readonly argumentsSize: number,
    readonly name: string,
}

export interface Instruction {
    readonly address: number,
    readonly hex: string,