dperini · August 22, 2010 00:08 · Aug 22, 2010 · Aug 22, 2010 · Aug 22, 2010 · Aug 22, 2010
diff --git a/js2png.php b/js2png.php
@@ -1,7 +1,7 @@
 <?php
 
 /*
- * Author: Diego Perini @[email protected]
+ * Author: Diego Perini <[email protected]>
  *
  * this is what I have in my build system to embed
  * the packed version of NWMatcher in a PNG file;

diff --git a/js2png.php b/js2png.php
@@ -12,7 +12,7 @@
  * Here is the javascript decoder:
  *
  *  // decodes and execute Javascript
- *  // code embedded in a PNG24 image
+ *  // code embedded in a PNG8 image
  *  function getDataPNG(g,k){
  *    var o;(o=new Image).src=g;
  *    o.onload=function(){

diff --git a/js2png.php b/js2png.php
@@ -1,13 +1,35 @@
 <?php
 
 /*
- * Author: Diego Perini
+ * Author: Diego Perini @[email protected]
  *
  * this is what I have in my build system to embed
  * the packed version of NWMatcher in a PNG file;
  * actually any data like JSON or XML can be
  * transported in compressed PNG files and
  * avoids HTTP compression requirements.
+ *
+ * Here is the javascript decoder:
+ *
+ *  // decodes and execute Javascript
+ *  // code embedded in a PNG24 image
+ *  function getDataPNG(g,k){
+ *    var o;(o=new Image).src=g;
+ *    o.onload=function(){
+ *      var a,b,c,d,e,f='',
+ *      x=o.width,y=o.height;
+ *      c=document.createElement('canvas');
+ *      e=c.getContext('2d');c.width=x;c.height=y;
+ *      e.drawImage(o,0,0);d=e.getImageData(0,0,x,y).data;
+ *      for(a=0;b=d[a];a+=4){f+=String.fromCharCode(b);}k(f)();
+ *    };
+ *  }
+ *
+ *  // usage:
+ *  // forget about the toString.constructor
+ *  // just pass the path to your local js/png file
+ *  getDataPNG('dist/nwmatcher.png', toString.constructor);
+ *
  */
 
 $filename = 'dist/nwmatcher-pac.js';

diff --git a/js2png.php b/js2png.php
@@ -0,0 +1,49 @@
+<?php
+
+/*
+ * Author: Diego Perini
+ *
+ * this is what I have in my build system to embed
+ * the packed version of NWMatcher in a PNG file;
+ * actually any data like JSON or XML can be
+ * transported in compressed PNG files and
+ * avoids HTTP compression requirements.
+ */
+
+$filename = 'dist/nwmatcher-pac.js';
+
+if (file_exists($filename)) {
+
+  $size = filesize($filename);
+
+  $width = ceil(sqrt($size / 1));
+  $height = $width - 1;
+
+  $im = imagecreate($width, $height);
+
+  $fs = fopen($filename, 'r');
+  $data = fread($fs, $size);
+  fclose($fs);
+
+  $i = 0;
+  $colors = array();
+
+  for ($y = 0; $height > $y; ++$y) {
+    for ($x = 0; $width > $x; ++$x) {
+      if ($i < $size) {
+        $byte = ord($data[$i]);
+        if (!isset($colors[$byte])) {
+          $colors[$byte] = imagecolorallocate($im, $byte, $byte, $byte);
+        }
+        $color = $colors[$byte];
+        imagesetpixel($im, $x, $y, $color);
+        ++$i;
+      }
+    }
+  }
+
+  header('Content-Type: image/png');
+  imagepng($im, NULL, 9);
+  imagedestroy($im);
+}
+?>