Yaffle’s gists

Yaffle / URLUtils.js

Last active September 5, 2022 02:19

parse URL + absolutize URL in javascript (URLUtils shim - http://url.spec.whatwg.org/#url)

	/jslint regexp: true, maxerr: 50, indent: 2 /

	(function (global) {
	"use strict";

	function URLUtils(url, baseURL) {
	var m = String(url).replace(/^\s+\|\s+$/g, "").match(/^([^:\/?#]+:)?(?:\/\/(?:([^:@\/?#])(?::([^:@\/?#]))?@)?(([^:\/?#])(?::(\d))?))?([^?#])(\?[^#])?(#[\s\S]*)?/);
	if (!m) {
	throw new RangeError();
	}

Yaffle / gist:1139221

Created August 11, 2011 09:13

	// http://www.w3.org/TR/html5/association-of-controls-and-forms.html#concept-form-submit
	// FormData (to support files?) FormData.append... (only POST + not string result???)
	function serializeForm(form, submitter, useFormData) {
	useFormData = useFormData && window.FormData;
	var results = useFormData ? (new FormData()) : [], tagName, i, opts, j, field, elements = form.elements;
	for (j = 0; j < elements.length; j++) {
	field = elements[j];
	tagName = field.tagName.toLowerCase();
	if (tagName === 'object' \|\| (tagName === 'input' && (field.type === 'image' \|\| (!useFormData && field.type === 'file')))) {
	return null;

Yaffle / convertPointFromPageToNode.js

Last active April 30, 2024 03:50

function to get the MouseEvent coordinates for an element that has CSS3 Transforms

	/jslint plusplus: true, vars: true, indent: 2 /

	/*
	convertPointFromPageToNode(element, event.pageX, event.pageY) -> {x, y}
	returns coordinate in element's local coordinate system (works properly with css transforms without perspective projection)

	convertPointFromNodeToPage(element, offsetX, offsetY) -> {x, y}
	returns coordinate in window's coordinate system (works properly with css transforms without perspective projection)
	*/

Yaffle / gist:1284012

Last active April 2, 2018 08:03

javascript base64 encode/decode

	<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">

	<script type="text/javascript">

	var nativeAtob = window.atob;
	var nativeBtoa = window.btoa;

	// http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#atob
	(function (global) {
	"use strict";

Yaffle / gist:1287361

Last active April 27, 2024 04:19

crc 32 in javascript


	function crc32(s/, polynomial = 0x04C11DB7, initialValue = 0xFFFFFFFF, finalXORValue = 0xFFFFFFFF/) {
	s = String(s);
	var polynomial = arguments.length < 2 ? 0x04C11DB7 : (arguments[1] >>> 0);
	var initialValue = arguments.length < 3 ? 0xFFFFFFFF : (arguments[2] >>> 0);
	var finalXORValue = arguments.length < 4 ? 0xFFFFFFFF : (arguments[3] >>> 0);
	var table = new Array(256);

	var reverse = function (x, n) {
	var b = 0;

Yaffle / gist:1316257

Created October 26, 2011 12:52

Permutation#Generation_in_lexicographic_order

	// http://en.wikipedia.org/wiki/Permutation#Generation_in_lexicographic_order
	// callback(permutation, even)
	function permutations(n, callback) {
	n >>>= 0;
	var p = n ? [] : null,
	even = true;

	for (i = 0; i < n; i++) {
	p[i] = i;
	}

Yaffle / gist:1336740

Created November 3, 2011 15:14

javascript Approximate string matching

	// http://en.wikipedia.org/wiki/Approximate_string_matching
	function fuzzySearch(t, p) { // returns minimum edit distance between substring of t and p
	var a = [], // current row
	b = [], // previous row
	pa = [], // from
	pb = [],
	s, i, j;
	for (i = 0; i <= p.length; i++) {
	s = b;
	b = a;

Yaffle / gist:1378774

Created November 19, 2011 12:11

	function strtolower_utf8($string) {
	$convert_to = array(
	"a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u",
	"v", "w", "x", "y", "z", "à", "á", "â", "ã", "ä", "å", "æ", "ç", "è", "é", "ê", "ë", "ì", "í", "î", "ï",
	"ð", "ñ", "ò", "ó", "ô", "õ", "ö", "ø", "ù", "ú", "û", "ü", "ý", "а", "б", "в", "г", "д", "е", "ё", "ж",
	"з", "и", "й", "к", "л", "м", "н", "о", "п", "р", "с", "т", "у", "ф", "х", "ц", "ч", "ш", "щ", "ъ", "ы",
	"ь", "э", "ю", "я"
	);
	$convert_from = array(
	"A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U",

Yaffle / gist:1381713

Created November 21, 2011 05:15

udpproxy in node.js

	/jslint node: true, indent: 2 /

	"use strict";

	var httpPort = 4022;

	var http = require('http');
	var dgram = require('dgram');
	var querystring = require('querystring');

Yaffle / gist:1547957

Created January 1, 2012 18:14

	CREATE TABLE IF NOT EXISTS `rabota_ids` (
	`ID` varchar( 255 ) NOT NULL DEFAULT '',
	`region` varchar( 1 ) NOT NULL ,
	`parsed` varchar( 1 ) DEFAULT '0',
	`added` date NOT NULL ,
	UNIQUE KEY `ID` ( `ID` )
	) ENGINE = MYISAM DEFAULT CHARSET = utf8;
	ALTER TABLE `zarplata_v` CHANGE `source` `source` ENUM( '0', '1', '2', '3', '4' ) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL DEFAULT '0';
	ALTER TABLE `zarplata_r` CHANGE `source` `source` ENUM( '0', '1', '2', '3', '4' ) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL DEFAULT '0';

Viktor Yaffle