JackyYin’s gists

JackyYin / jwt.js

Created August 6, 2019 15:54

a JWT factory with blacklist and refresh function

	const jwt = require('jsonwebtoken');

	module.exports = (redisC) => {
	const secret = process.env.JWT_SECRET;
	const accessExpiresIn = 60 * 15;
	const refreshExpiresIn = 60 * 60;

	const sign = ({ payload = {}, options = {}, type = 'access' }) => {
	payload = {...payload, type};
	options = options.expiresIn ? options : {

JackyYin / docker-compose.yml

Created December 23, 2019 07:34

docker-compose for local mongoDB

	version: '3.5'

	services:
	mongo:
	image: mongo
	ports:
	- '27017:27017'
	environment:
	MONGO_INITDB_ROOT_USERNAME: root
	MONGO_INITDB_ROOT_PASSWORD: root

JackyYin / sort.c

Created December 14, 2020 03:39

5 sorting algorithems includes bubble sort, selection sort, insertion sort, merge sort and quick sort

	#include <stdio.h>
	#include <stddef.h>
	#include <stdlib.h>
	#include <string.h>

	void _swap (int *arr, size_t i, size_t j) {
	int tmp = arr[i];
	arr[i] = arr[j];
	arr[j] = tmp;
	}

JackyYin / init.toml

Last active July 3, 2021 03:37

my spacevim config

	#=============================================================================
	# dark_powered.toml --- dark powered configuration example for SpaceVim
	# Copyright (c) 2016-2020 Wang Shidong & Contributors
	# Author: Wang Shidong < wsdjeg at 163.com >
	# URL: https://spacevim.org
	# License: GPLv3
	#=============================================================================

	# All SpaceVim option below [option] section
	[options]

JackyYin / myspacevim.vim

Last active July 3, 2021 03:39

some custom config for space vim

	function! myspacevim#before() abort
	""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
	" BASICS
	""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

	syntax on
	set updatetime=1000

	"for performance issue
	set re=1

JackyYin / rsa.js

Created January 16, 2021 12:58

test size limit of RSA message body

	const bits = 2048
	const { publicKey } = crypto.generateKeyPairSync('rsa', {
	modulusLength: bits,
	publicKeyEncoding: {
	type: 'pkcs1',
	format: 'pem'
	}
	})

	const test = (len) => {

JackyYin / coroutine.c

Last active March 30, 2021 09:10

a simple coroutine implementation

	#include <setjmp.h>
	#include <stdio.h>
	#include <stdlib.h>

	#define COROUTINE_START int r = setjmp(current->context);\
	switch (r) {\
	case 0:

	#define COROUTINE_PREEMPT if (current->iter % 500 == 0) {\
	longjmp(m, 1);\

JackyYin / remove_bad_utf8.c

Last active September 3, 2021 09:04

in-place replace bad UTF-8 chars for CLD2

	void remove_bad_utf8 (uint8_t *src, size_t srclen)
	{
	uint8_t *dst = src;
	uint8_t *srcend = src + srclen;

	while (src < srcend) {
	// 0xxxxxxx
	if ((src[0] & 0x80) == 0x00) {
	if (src[0] < 0x20 \|\| src[0] == 0x7F) {
	/* printf("not printable one-byte char...%02X\n", src[0]); */

JackyYin / coroutine_ucontext.c

Created September 12, 2021 14:34

a simple coroutine implementation using ucontext

	#include <ucontext.h>
	#include <stdio.h>
	#include <stdlib.h>

	#define handle_error(msg) \
	do { perror(msg); exit(EXIT_FAILURE); } while (0)

	#define CO_STACK_SIZE 2048

	typedef struct {

JackyYin / futex.c

Last active September 24, 2021 08:00

A simple program using futex to mimic mutex, but much slower than mutex

7FrogTW JackyYin