From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001
From: "Matt A. Tobin" <mattatobin@localhost.localdomain>
Date: Fri, 2 Feb 2018 04:16:08 -0500
Subject: Add m-esr52 at 52.6.0

---
 devtools/client/shared/node-attribute-parser.js | 294 ++++++++++++++++++++++++
 1 file changed, 294 insertions(+)
 create mode 100644 devtools/client/shared/node-attribute-parser.js

(limited to 'devtools/client/shared/node-attribute-parser.js')

diff --git a/devtools/client/shared/node-attribute-parser.js b/devtools/client/shared/node-attribute-parser.js
new file mode 100644
index 000000000..aaf866fca
--- /dev/null
+++ b/devtools/client/shared/node-attribute-parser.js
@@ -0,0 +1,294 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2; js-indent-level: 2 -*- */
+/* vim: set ft=javascript ts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/**
+ * This module contains a small element attribute value parser. It's primary
+ * goal is to extract link information from attribute values (like the href in
+ * <a href="/some/link.html"> for example).
+ *
+ * There are several types of linkable attribute values:
+ * - TYPE_URI: a URI (e.g. <a href="uri">).
+ * - TYPE_URI_LIST: a space separated list of URIs (e.g. <a ping="uri1 uri2">).
+ * - TYPE_IDREF: a reference to an other element in the same document via its id
+ *   (e.g. <label for="input-id"> or <key command="command-id">).
+ * - TYPE_IDREF_LIST: a space separated list of IDREFs (e.g.
+ *   <output for="id1 id2">).
+ * - TYPE_JS_RESOURCE_URI: a URI to a javascript resource that can be opened in
+ *   the devtools (e.g. <script src="uri">).
+ * - TYPE_CSS_RESOURCE_URI: a URI to a css resource that can be opened in the
+ *   devtools (e.g. <link href="uri">).
+ *
+ * parseAttribute is the parser entry function, exported on this module.
+ */
+
+const TYPE_STRING = "string";
+const TYPE_URI = "uri";
+const TYPE_URI_LIST = "uriList";
+const TYPE_IDREF = "idref";
+const TYPE_IDREF_LIST = "idrefList";
+const TYPE_JS_RESOURCE_URI = "jsresource";
+const TYPE_CSS_RESOURCE_URI = "cssresource";
+
+const XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
+const HTML_NS = "http://www.w3.org/1999/xhtml";
+
+/* eslint-disable max-len */
+const ATTRIBUTE_TYPES = [
+  {namespaceURI: HTML_NS, attributeName: "action", tagName: "form", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "background", tagName: "body", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "cite", tagName: "blockquote", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "cite", tagName: "q", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "cite", tagName: "del", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "cite", tagName: "ins", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "classid", tagName: "object", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "codebase", tagName: "object", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "codebase", tagName: "applet", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "command", tagName: "menuitem", type: TYPE_IDREF},
+  {namespaceURI: "*", attributeName: "contextmenu", tagName: "*", type: TYPE_IDREF},
+  {namespaceURI: HTML_NS, attributeName: "data", tagName: "object", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "for", tagName: "label", type: TYPE_IDREF},
+  {namespaceURI: HTML_NS, attributeName: "for", tagName: "output", type: TYPE_IDREF_LIST},
+  {namespaceURI: HTML_NS, attributeName: "form", tagName: "button", type: TYPE_IDREF},
+  {namespaceURI: HTML_NS, attributeName: "form", tagName: "fieldset", type: TYPE_IDREF},
+  {namespaceURI: HTML_NS, attributeName: "form", tagName: "input", type: TYPE_IDREF},
+  {namespaceURI: HTML_NS, attributeName: "form", tagName: "keygen", type: TYPE_IDREF},
+  {namespaceURI: HTML_NS, attributeName: "form", tagName: "label", type: TYPE_IDREF},
+  {namespaceURI: HTML_NS, attributeName: "form", tagName: "object", type: TYPE_IDREF},
+  {namespaceURI: HTML_NS, attributeName: "form", tagName: "output", type: TYPE_IDREF},
+  {namespaceURI: HTML_NS, attributeName: "form", tagName: "select", type: TYPE_IDREF},
+  {namespaceURI: HTML_NS, attributeName: "form", tagName: "textarea", type: TYPE_IDREF},
+  {namespaceURI: HTML_NS, attributeName: "formaction", tagName: "button", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "formaction", tagName: "input", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "headers", tagName: "td", type: TYPE_IDREF_LIST},
+  {namespaceURI: HTML_NS, attributeName: "headers", tagName: "th", type: TYPE_IDREF_LIST},
+  {namespaceURI: HTML_NS, attributeName: "href", tagName: "a", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "href", tagName: "area", type: TYPE_URI},
+  {namespaceURI: "*", attributeName: "href", tagName: "link", type: TYPE_CSS_RESOURCE_URI,
+  /* eslint-enable */
+    isValid: (namespaceURI, tagName, attributes) => {
+      return getAttribute(attributes, "rel") === "stylesheet";
+    }},
+  /* eslint-disable max-len */
+  {namespaceURI: "*", attributeName: "href", tagName: "link", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "href", tagName: "base", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "icon", tagName: "menuitem", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "list", tagName: "input", type: TYPE_IDREF},
+  {namespaceURI: HTML_NS, attributeName: "longdesc", tagName: "img", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "longdesc", tagName: "frame", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "longdesc", tagName: "iframe", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "manifest", tagName: "html", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "menu", tagName: "button", type: TYPE_IDREF},
+  {namespaceURI: HTML_NS, attributeName: "ping", tagName: "a", type: TYPE_URI_LIST},
+  {namespaceURI: HTML_NS, attributeName: "ping", tagName: "area", type: TYPE_URI_LIST},
+  {namespaceURI: HTML_NS, attributeName: "poster", tagName: "video", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "profile", tagName: "head", type: TYPE_URI},
+  {namespaceURI: "*", attributeName: "src", tagName: "script", type: TYPE_JS_RESOURCE_URI},
+  {namespaceURI: HTML_NS, attributeName: "src", tagName: "input", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "src", tagName: "frame", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "src", tagName: "iframe", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "src", tagName: "img", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "src", tagName: "audio", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "src", tagName: "embed", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "src", tagName: "source", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "src", tagName: "track", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "src", tagName: "video", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "usemap", tagName: "img", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "usemap", tagName: "input", type: TYPE_URI},
+  {namespaceURI: HTML_NS, attributeName: "usemap", tagName: "object", type: TYPE_URI},
+  {namespaceURI: "*", attributeName: "xmlns", tagName: "*", type: TYPE_URI},
+  {namespaceURI: XUL_NS, attributeName: "command", tagName: "key", type: TYPE_IDREF},
+  {namespaceURI: XUL_NS, attributeName: "containment", tagName: "*", type: TYPE_URI},
+  {namespaceURI: XUL_NS, attributeName: "context", tagName: "*", type: TYPE_IDREF},
+  {namespaceURI: XUL_NS, attributeName: "datasources", tagName: "*", type: TYPE_URI_LIST},
+  {namespaceURI: XUL_NS, attributeName: "insertafter", tagName: "*", type: TYPE_IDREF},
+  {namespaceURI: XUL_NS, attributeName: "insertbefore", tagName: "*", type: TYPE_IDREF},
+  {namespaceURI: XUL_NS, attributeName: "menu", tagName: "*", type: TYPE_IDREF},
+  {namespaceURI: XUL_NS, attributeName: "observes", tagName: "*", type: TYPE_IDREF},
+  {namespaceURI: XUL_NS, attributeName: "popup", tagName: "*", type: TYPE_IDREF},
+  {namespaceURI: XUL_NS, attributeName: "ref", tagName: "*", type: TYPE_URI},
+  {namespaceURI: XUL_NS, attributeName: "removeelement", tagName: "*", type: TYPE_IDREF},
+  {namespaceURI: XUL_NS, attributeName: "sortResource", tagName: "*", type: TYPE_URI},
+  {namespaceURI: XUL_NS, attributeName: "sortResource2", tagName: "*", type: TYPE_URI},
+  {namespaceURI: XUL_NS, attributeName: "src", tagName: "stringbundle", type: TYPE_URI},
+  {namespaceURI: XUL_NS, attributeName: "template", tagName: "*", type: TYPE_IDREF},
+  {namespaceURI: XUL_NS, attributeName: "tooltip", tagName: "*", type: TYPE_IDREF},
+  /* eslint-enable */
+  // SVG links aren't handled yet, see bug 1158831.
+  // {namespaceURI: SVG_NS, attributeName: "fill", tagName: "*", type: },
+  // {namespaceURI: SVG_NS, attributeName: "stroke", tagName: "*", type: },
+  // {namespaceURI: SVG_NS, attributeName: "markerstart", tagName: "*", type: },
+  // {namespaceURI: SVG_NS, attributeName: "markermid", tagName: "*", type: },
+  // {namespaceURI: SVG_NS, attributeName: "markerend", tagName: "*", type: },
+  // {namespaceURI: SVG_NS, attributeName: "xlink:href", tagName: "*", type: }
+];
+
+var parsers = {
+  [TYPE_URI]: function (attributeValue) {
+    return [{
+      type: TYPE_URI,
+      value: attributeValue
+    }];
+  },
+  [TYPE_URI_LIST]: function (attributeValue) {
+    let data = splitBy(attributeValue, " ");
+    for (let token of data) {
+      if (!token.type) {
+        token.type = TYPE_URI;
+      }
+    }
+    return data;
+  },
+  [TYPE_JS_RESOURCE_URI]: function (attributeValue) {
+    return [{
+      type: TYPE_JS_RESOURCE_URI,
+      value: attributeValue
+    }];
+  },
+  [TYPE_CSS_RESOURCE_URI]: function (attributeValue) {
+    return [{
+      type: TYPE_CSS_RESOURCE_URI,
+      value: attributeValue
+    }];
+  },
+  [TYPE_IDREF]: function (attributeValue) {
+    return [{
+      type: TYPE_IDREF,
+      value: attributeValue
+    }];
+  },
+  [TYPE_IDREF_LIST]: function (attributeValue) {
+    let data = splitBy(attributeValue, " ");
+    for (let token of data) {
+      if (!token.type) {
+        token.type = TYPE_IDREF;
+      }
+    }
+    return data;
+  }
+};
+
+/**
+ * Parse an attribute value.
+ * @param {String} namespaceURI The namespaceURI of the node that has the
+ * attribute.
+ * @param {String} tagName The tagName of the node that has the attribute.
+ * @param {Array} attributes The list of all attributes of the node. This should
+ * be an array of {name, value} objects.
+ * @param {String} attributeName The name of the attribute to parse.
+ * @return {Array} An array of tokens that represents the value. Each token is
+ * an object {type: [string|uri|jsresource|cssresource|idref], value}.
+ * For instance parsing the ping attribute in <a ping="uri1 uri2"> returns:
+ * [
+ *   {type: "uri", value: "uri2"},
+ *   {type: "string", value: " "},
+ *   {type: "uri", value: "uri1"}
+ * ]
+ */
+function parseAttribute(namespaceURI, tagName, attributes, attributeName) {
+  if (!hasAttribute(attributes, attributeName)) {
+    throw new Error(`Attribute ${attributeName} isn't part of the ` +
+                    "provided attributes");
+  }
+
+  let type = getType(namespaceURI, tagName, attributes, attributeName);
+  if (!type) {
+    return [{
+      type: TYPE_STRING,
+      value: getAttribute(attributes, attributeName)
+    }];
+  }
+
+  return parsers[type](getAttribute(attributes, attributeName));
+}
+
+/**
+ * Get the type for links in this attribute if any.
+ * @param {String} namespaceURI The node's namespaceURI.
+ * @param {String} tagName The node's tagName.
+ * @param {Array} attributes The node's attributes, as a list of {name, value}
+ * objects.
+ * @param {String} attributeName The name of the attribute to get the type for.
+ * @return {Object} null if no type exist for this attribute on this node, the
+ * type object otherwise.
+ */
+function getType(namespaceURI, tagName, attributes, attributeName) {
+  for (let typeData of ATTRIBUTE_TYPES) {
+    let containsAttribute = attributeName === typeData.attributeName ||
+                            typeData.attributeName === "*";
+    let hasNamespace = namespaceURI === typeData.namespaceURI ||
+                       typeData.namespaceURI === "*";
+    let hasTagName = tagName.toLowerCase() === typeData.tagName ||
+                     typeData.tagName === "*";
+    let isValid = typeData.isValid
+                  ? typeData.isValid(namespaceURI,
+                                     tagName,
+                                     attributes,
+                                     attributeName)
+                  : true;
+
+    if (containsAttribute && hasNamespace && hasTagName && isValid) {
+      return typeData.type;
+    }
+  }
+
+  return null;
+}
+
+function getAttribute(attributes, attributeName) {
+  for (let {name, value} of attributes) {
+    if (name === attributeName) {
+      return value;
+    }
+  }
+  return null;
+}
+
+function hasAttribute(attributes, attributeName) {
+  for (let {name} of attributes) {
+    if (name === attributeName) {
+      return true;
+    }
+  }
+  return false;
+}
+
+/**
+ * Split a string by a given character and return an array of objects parts.
+ * The array will contain objects for the split character too, marked with
+ * TYPE_STRING type.
+ * @param {String} value The string to parse.
+ * @param {String} splitChar A 1 length split character.
+ * @return {Array}
+ */
+function splitBy(value, splitChar) {
+  let data = [], i = 0, buffer = "";
+  while (i <= value.length) {
+    if (i === value.length && buffer) {
+      data.push({value: buffer});
+    }
+    if (value[i] === splitChar) {
+      if (buffer) {
+        data.push({value: buffer});
+      }
+      data.push({
+        type: TYPE_STRING,
+        value: splitChar
+      });
+      buffer = "";
+    } else {
+      buffer += value[i];
+    }
+
+    i++;
+  }
+  return data;
+}
+
+exports.parseAttribute = parseAttribute;
+// Exported for testing only.
+exports.splitBy = splitBy;
-- 
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