first commit

grafana/dashboards/requests/node_modules/parse-cache-control/index.js

@@ -0,0 +1,37 @@
+module.exports = function parseCacheControl(field) {
+
+  if (typeof field !== 'string') {
+    return null;
+  }
+
+  /*
+    Cache-Control   = 1#cache-directive
+    cache-directive = token [ "=" ( token / quoted-string ) ]
+    token           = [^\x00-\x20\(\)<>@\,;\:\\"\/\[\]\?\=\{\}\x7F]+
+    quoted-string   = "(?:[^"\\]|\\.)*"
+  */
+
+  //                             1: directive                                        =   2: token                                              3: quoted-string
+  var regex = /(?:^|(?:\s*\,\s*))([^\x00-\x20\(\)<>@\,;\:\\"\/\[\]\?\=\{\}\x7F]+)(?:\=(?:([^\x00-\x20\(\)<>@\,;\:\\"\/\[\]\?\=\{\}\x7F]+)|(?:\"((?:[^"\\]|\\.)*)\")))?/g;
+
+  var header = {};
+  var err = field.replace(regex, function($0, $1, $2, $3) {
+    var value = $2 || $3;
+    header[$1] = value ? value.toLowerCase() : true;
+    return '';
+  });
+
+  if (header['max-age']) {
+    try {
+      var maxAge = parseInt(header['max-age'], 10);
+      if (isNaN(maxAge)) {
+        return null;
+      }
+
+      header['max-age'] = maxAge;
+    }
+    catch (err) { }
+  }
+
+  return (err ? null : header);
+};