Mojo JS Bindings: URL class

third_party/js/querystring.js

+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+// Query String Utilities
+
+define("third_party/js/querystring", [
+  "third_party/js/util",
+], function(util) {
+
+var QueryString = {};
+
+// If obj.hasOwnProperty has been overridden, then calling
+// obj.hasOwnProperty(prop) will break.
+// See: https://github.com/joyent/node/issues/1707
+function hasOwnProperty(obj, prop) {
+  return Object.prototype.hasOwnProperty.call(obj, prop);
+}
+
+
+function charCode(c) {
+  return c.charCodeAt(0);
+}
+
+
+// a safe fast alternative to decodeURIComponent
+QueryString.unescapeBuffer = function(s, decodeSpaces) {
+  var out = new Buffer(s.length);
+  var state = 'CHAR'; // states: CHAR, HEX0, HEX1
+  var n, m, hexchar;
+
+  for (var inIndex = 0, outIndex = 0; inIndex <= s.length; inIndex++) {
+    var c = s.charCodeAt(inIndex);
+    switch (state) {
+      case 'CHAR':
+        switch (c) {
+          case charCode('%'):
+            n = 0;
+            m = 0;
+            state = 'HEX0';
+            break;
+          case charCode('+'):
+            if (decodeSpaces) c = charCode(' ');
+            // pass thru
+          default:
+            out[outIndex++] = c;
+            break;
+        }
+        break;
+
+      case 'HEX0':
+        state = 'HEX1';
+        hexchar = c;
+        if (charCode('0') <= c && c <= charCode('9')) {
+          n = c - charCode('0');
+        } else if (charCode('a') <= c && c <= charCode('f')) {
+          n = c - charCode('a') + 10;
+        } else if (charCode('A') <= c && c <= charCode('F')) {
+          n = c - charCode('A') + 10;
+        } else {
+          out[outIndex++] = charCode('%');
+          out[outIndex++] = c;
+          state = 'CHAR';
+          break;
+        }
+        break;
+
+      case 'HEX1':
+        state = 'CHAR';
+        if (charCode('0') <= c && c <= charCode('9')) {
+          m = c - charCode('0');
+        } else if (charCode('a') <= c && c <= charCode('f')) {
+          m = c - charCode('a') + 10;
+        } else if (charCode('A') <= c && c <= charCode('F')) {
+          m = c - charCode('A') + 10;
+        } else {
+          out[outIndex++] = charCode('%');
+          out[outIndex++] = hexchar;
+          out[outIndex++] = c;
+          break;
+        }
+        out[outIndex++] = 16 * n + m;
+        break;
+    }
+  }
+
+  // TODO support returning arbitrary buffers.
+
+  return out.slice(0, outIndex - 1);
+};
+
+
+QueryString.unescape = function(s, decodeSpaces) {
+  try {
+    return decodeURIComponent(s);
+  } catch (e) {
+    return QueryString.unescapeBuffer(s, decodeSpaces).toString();
+  }
+};
+
+
+QueryString.escape = function(str) {
+  return encodeURIComponent(str);
+};
+
+var stringifyPrimitive = function(v) {
+  if (util.isString(v))
+    return v;
+  if (util.isBoolean(v))
+    return v ? 'true' : 'false';
+  if (util.isNumber(v))
+    return isFinite(v) ? v : '';
+  return '';
+};
+
+
+QueryString.stringify = QueryString.encode = function(obj, sep, eq, options) {
+  sep = sep || '&';
+  eq = eq || '=';
+
+  var encode = QueryString.escape;
+  if (options && typeof options.encodeURIComponent === 'function') {
+    encode = options.encodeURIComponent;
+  }
+
+  if (util.isObject(obj)) {
+    var keys = Object.keys(obj);
+    var fields = [];
+
+    for (var i = 0; i < keys.length; i++) {
+      var k = keys[i];
+      var v = obj[k];
+      var ks = encode(stringifyPrimitive(k)) + eq;
+
+      if (util.isArray(v)) {
+        for (var j = 0; j < v.length; j++)
+          fields.push(ks + encode(stringifyPrimitive(v[j])));
+      } else {
+        fields.push(ks + encode(stringifyPrimitive(v)));
+      }
+    }
+    return fields.join(sep);
+  }
+  return '';
+};
+
+// Parse a key=val string.
+QueryString.parse = QueryString.decode = function(qs, sep, eq, options) {
+  sep = sep || '&';
+  eq = eq || '=';
+  var obj = {};
+
+  if (!util.isString(qs) || qs.length === 0) {
+    return obj;
+  }
+
+  var regexp = /\+/g;
+  qs = qs.split(sep);
+
+  var maxKeys = 1000;
+  if (options && util.isNumber(options.maxKeys)) {
+    maxKeys = options.maxKeys;
+  }
+
+  var len = qs.length;
+  // maxKeys <= 0 means that we should not limit keys count
+  if (maxKeys > 0 && len > maxKeys) {
+    len = maxKeys;
+  }
+
+  var decode = QueryString.unescape;
+  if (options && typeof options.decodeURIComponent === 'function') {
+    decode = options.decodeURIComponent;
+  }
+
+  for (var i = 0; i < len; ++i) {
+    var x = qs[i].replace(regexp, '%20'),
+        idx = x.indexOf(eq),
+        kstr, vstr, k, v;
+
+    if (idx >= 0) {
+      kstr = x.substr(0, idx);
+      vstr = x.substr(idx + 1);
+    } else {
+      kstr = x;
+      vstr = '';
+    }
+
+    try {
+      k = decode(kstr);
+      v = decode(vstr);
+    } catch (e) {
+      k = QueryString.unescape(kstr, true);
+      v = QueryString.unescape(vstr, true);
+    }
+
+    if (!hasOwnProperty(obj, k)) {
+      obj[k] = v;
+    } else if (util.isArray(obj[k])) {
+      obj[k].push(v);
+    } else {
+      obj[k] = [obj[k], v];
+    }
+  }
+
+  return obj;
+};
+
+return QueryString;
+});