yurydelendik

[alias]
  try = !sh -c 'IFS=\":\" read -ra ARGS <<< \"$0\" && git fetch https://github.com/${ARGS[0]}/pdf.js.git ${ARGS[1]} && git checkout FETCH_HEAD'

yurydelendik

// http://csrc.nist.gov/publications/fips/fips180-4/fips-180-4.pdf
var W = new Int32Array(80);
function sha1(s) {
  // 6.1.1 SHA-1 Preprocessing
  var H = new Int32Array([0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476, 0xc3d2e1f0]);
  // 5.1 Padding the Message
  var sLength = s.length, sLength8 = sLength << 3;
  var length = (((sLength8 + 64) | 511) + 1) >> 3;
  var m = new Uint8Array(length);
  for (var i = 0; i < sLength; i++) {

yurydelendik

<canvas id="c"></canvas>
<script>
  var c = document.getElementById('c');
  var ctx = c.getContext('2d');
  ctx.transform(10, 0, 0, 10, 0, 0);
  ctx.rect(10, 5, 1, 1);
  ctx.fillStyle = 'red';
  // ctx.mozFillRule = 'evenodd'; // also bad
  // ctx.fill(); // okay
  ctx.fill('evenodd');

yurydelendik

var sourceAddress = [192,168,1,2];
var targetAddress = [192,168,1,1];

function readCapFile() {
  var xhr = new XMLHttpRequest();
  xhr.open('GET', 'test.cap');
  xhr.responseType = 'arraybuffer';
  xhr.onload = function () {
    var file = new Uint8Array(xhr.response);
    if (file[0] !== 0x47 || file[1] !== 0x4D) throw new Error('invalid cap file');

yurydelendik

function getDPI() {
  var native = document.createElement('div');
  native.setAttribute('style', 'width:0px; width:100mozmm; position: fixed;');
  document.body.appendChild(native);
  var standard = document.createElement('div');
  standard.setAttribute('style', 'width:100mm; position: fixed;');
  document.body.appendChild(standard);
  var dpi = Math.round(native.offsetWidth / standard.offsetWidth * 96);
  native.remove();
  standard.remove();

yurydelendik

function isInView(element) {
  // set initial bounds
  var bounds = element.getBoundingClientRect();
  var left = bounds.left, top = bounds.top;
  var right = bounds.right, bottom = bounds.bottom;
  var currentElement = element;
  while (true) {
    if (!currentElement.offsetParent) {
      return false; // 'display: none;' not visible
    }

yurydelendik

fs = require('fs');

function fromPdfString(s) {
  var t = '';
  for (var i = 0; i < s.length; i++) {
    if (s[i] != '\\') {
      t += s[i];
      continue;
    }
    if (s[i + 1] < "A") {

yurydelendik

<canvas id="screencap" onclick="turn()"></canvas>
<script>
var angle = 0;
function turn() {
  angle = (angle + 90) % 360;
}

function readImage() {
  var img = new Image();
  img.onload = function () {

yurydelendik

Simple barcode scanner in JavaScript

Random toughts and steps for creation of the https://github.com/yurydelendik/zbarjs project.

Finding native library

The http://zbar.sf.net looks like a good library. The license is LGPL, we have to take that in account late. Let's compile http://downloads.sourceforge.net/project/zbar/zbar/0.10/zbar-0.10.tar.bz2 :

./configure --disable-video --without-python --without-qt

yurydelendik

$ python stats/statcmp.py sp2_orig.stat sp2_ref.stat 
-- Grouped By browser, stat -- 
browser | stat         | Baseline(ms) | Current(ms) | +/- | %     | Result(P<.05)
---------------------------------------------------------------------------------
firefox | Font Loading | 1            | 1           | -0  | -6.63 | slower       
firefox | Overall      | 78           | 75          | 3   | 3.37  | faster       
firefox | Page Request | 21           | 17          | 4   | 17.59 | faster       
firefox | Rendering    | 55           | 56          | -1  | -1.66 | slower       

-- Grouped By browser, pdf, stat --