Merge pull request locutusjs#194 from duzun/master

kvz · kvz · commit d94f3cc5b6ec · 2014-10-28T01:28:14.000+01:00
Added hex2bin.js
diff --git a/functions/strings/hex2bin.js b/functions/strings/hex2bin.js
@@ -0,0 +1,23 @@
+function hex2bin(s) {
+  //  discuss at: http://phpjs.org/functions/hex2bin/
+  // original by: Dumitru Uzun (http://duzun.me)
+  //   example 1: hex2bin('44696d61');
+  //   returns 1: 'Dima'
+  //   example 2: hex2bin('00');
+  //   returns 2: '\x00'
+  //   example 3: hex2bin('2f1q')
+  //   returns 3: false
+
+  var ret = [], i = 0, l;
+
+  s += '';
+
+  for ( l = s.length ; i < l; i+=2 ) {
+    var c = parseInt(s.substr(i, 1), 16);
+    var k = parseInt(s.substr(i+1, 1), 16);
+    if(isNaN(c) || isNaN(k)) return false;
+    ret.push( (c << 4) | k );
+  }
+
+  return String.fromCharCode.apply(String, ret);
+}
