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Added url module

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1 parent bdf4cdf commit 0a8950dd264a4db86f0582cd0ca1b91557580add @nelsonsilva committed May 16, 2012
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  1. +214 −0 querystring.js
  2. +521 −0 url.js
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+// 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
+
+var QueryString = exports;
+
+
+// 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) {
+ return QueryString.unescapeBuffer(s, decodeSpaces).toString();
+};
+
+
+QueryString.escape = function(str) {
+ return encodeURIComponent(str);
+};
+
+var stringifyPrimitive = function(v) {
+ switch (typeof v) {
+ case 'string':
+ return v;
+
+ case 'boolean':
+ return v ? 'true' : 'false';
+
+ case 'number':
+ return isFinite(v) ? v : '';
+
+ default:
+ return '';
+ }
+};
+
+
+QueryString.stringify = QueryString.encode = function(obj, sep, eq, name) {
+ sep = sep || '&';
+ eq = eq || '=';
+ obj = (obj === null) ? undefined : obj;
+
+ switch (typeof obj) {
+ case 'object':
+ return Object.keys(obj).map(function(k) {
+ if (Array.isArray(obj[k])) {
+ return obj[k].map(function(v) {
+ return QueryString.escape(stringifyPrimitive(k)) +
+ eq +
+ QueryString.escape(stringifyPrimitive(v));
+ }).join(sep);
+ } else {
+ return QueryString.escape(stringifyPrimitive(k)) +
+ eq +
+ QueryString.escape(stringifyPrimitive(obj[k]));
+ }
+ }).join(sep);
+
+ default:
+ if (!name) return '';
+ return QueryString.escape(stringifyPrimitive(name)) + eq +
+ QueryString.escape(stringifyPrimitive(obj));
+ }
+};
+
+// Parse a key=val string.
+QueryString.parse = QueryString.decode = function(qs, sep, eq, options) {
+ sep = sep || '&';
+ eq = eq || '=';
+ var obj = {},
+ maxKeys = 1000;
+
+ // Handle maxKeys = 0 case
+ if (options && typeof options.maxKeys === 'number') {
+ maxKeys = options.maxKeys;
+ }
+
+ if (typeof qs !== 'string' || qs.length === 0) {
+ return obj;
+ }
+
+ var regexp = /\+/g;
+ qs = qs.split(sep);
+
+ // maxKeys <= 0 means that we should not limit keys count
+ if (maxKeys > 0) {
+ qs = qs.slice(0, maxKeys);
+ }
+
+ for (var i = 0, len = qs.length; i < len; ++i) {
+ var x = qs[i].replace(regexp, '%20'),
+ idx = x.indexOf(eq),
+ kstr = x.substring(0, idx),
+ vstr = x.substring(idx + 1), k, v;
+
+ if (kstr === '' && vstr !== '') {
+ kstr = vstr;
+ vstr = '';
+ }
+
+ try {
+ k = decodeURIComponent(kstr);
+ v = decodeURIComponent(vstr);
+ } catch (e) {
+ k = QueryString.unescape(kstr, true);
+ v = QueryString.unescape(vstr, true);
+ }
+
+ if (!hasOwnProperty(obj, k)) {
+ obj[k] = v;
+ } else if (!Array.isArray(obj[k])) {
+ obj[k] = [obj[k], v];
+ } else {
+ obj[k].push(v);
+ }
+ }
+
+ return obj;
+};
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