Re-add release.php file

Author: limzykenneth

dist/download/release.php

@@ -0,0 +1,63 @@
+<?php
+
+$lib_version;
+
+function download($url, $path) {
+  # open file to write
+  $fp = fopen ($path, 'w+');
+  # start curl
+  $ch = curl_init();
+  curl_setopt( $ch, CURLOPT_URL, $url );
+  # set return transfer to false
+  curl_setopt( $ch, CURLOPT_RETURNTRANSFER, false );
+  curl_setopt( $ch, CURLOPT_BINARYTRANSFER, true );
+  curl_setopt( $ch, CURLOPT_SSL_VERIFYPEER, false );
+  # increase timeout to download big file
+  curl_setopt( $ch, CURLOPT_CONNECTTIMEOUT, 10 );
+  # write data to local file
+  curl_setopt( $ch, CURLOPT_FILE, $fp );
+  # execute curl
+  curl_exec( $ch );
+  # close curl
+  curl_close( $ch );
+  # close local file
+  fclose( $fp );
+
+  if (filesize($path) > 0) return true;
+}
+
+function getLibVersionDate($f) {
+  $handle = fopen($f, 'r');
+  $line = fgets($handle);
+  fclose($handle);
+  preg_match('/v([^ ]*) /', $line, $matches);
+  $v = $matches[1];
+  preg_match('/v[^ ]* ([^ ]* [^ ]* [^ ]*) /', $line, $matches);
+  $d = $matches[1];
+  return array($v, $d);
+}
+
+function updateFiles() {
+  global $lib_version;
+  $r = 'https://raw.githubusercontent.com/lmccart/p5.js-release/master/lib';
+  download($r.'/p5.min.js', '../assets/js/p5.min.js');
+  download($r.'/addons/p5.dom.min.js', '../assets/js/p5.dom.min.js');
+  download($r.'/addons/p5.sound.min.js', '../assets/js/p5.sound.min.js');
+}
+
+function updateAll() {
+  updateFiles();
+
+  $v = getLibVersionDate('../assets/js/p5.min.js');
+  $lib_version = $v[0];
+  $lib_date = $v[1];
+
+  $contents = array('version'=>$lib_version, 'date'=>$lib_date);
+  file_put_contents('version.json', json_encode($contents));
+
+  unlink('package.json');
+  echo 'updated library version to v'.$lib_version.' ('.$lib_date.')<br>';
+}
+
+updateAll();
+?>