Add live URL viewer on GitHub pages

Meant to be an always-updating version of https://quuz.org/url/liveview2.html. Much code, especially styling, copied from https://github.com/annevk/live-url-viewer. Closes #106.
jsdom · May 9, 2018 · 6a31107 · 6a31107
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diff --git a/.eslintignore b/.eslintignore
@@ -5,3 +5,4 @@ lib/URLSearchParams.js
 lib/url-state-machine.js
 lib/urlencoded.js
 lib/utils.js
+live-viewer/whatwg-url.js
diff --git a/.gitignore b/.gitignore
@@ -11,3 +11,4 @@ lib/URLSearchParams.js
 lib/url-state-machine.js
 lib/urlencoded.js
 lib/utils.js
+out/
diff --git a/.travis.yml b/.travis.yml
@@ -1,11 +1,22 @@
-language: node_js
+sudo: false
 
+language: node_js
 node_js: stable
-sudo: false
 
 install:
   - yarn
 
 script:
   - yarn lint
   - yarn test
+
+before_deploy:
+  - bash scripts/deploy-live-viewer.sh
+
+deploy:
+  provider: pages
+  local-dir: out
+  committer-from-gh: true
+  skip-cleanup: true
+  keep-history: true
+  github-token: $GH_TOKEN
diff --git a/live-viewer/.eslintrc.json b/live-viewer/.eslintrc.json
@@ -0,0 +1,8 @@
+{
+  "env": {
+    "browser": true
+  },
+  "globals": {
+    "whatwgURL": false
+  }
+}
diff --git a/live-viewer/index.html b/live-viewer/index.html
@@ -0,0 +1,67 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>Live URL Viewer</title>
+<link rel="stylesheet" href="style.css">
+<script src="whatwg-url.js"></script>
+
+<h1>Live URL Viewer</h1>
+
+<p>The output below will display a URL's parsed components from the browser versus those given by
+<a href="https://github.com/jsdom/whatwg-url">jsdom/whatwg-url</a>.
+
+<p>jsdom/whatwg-url closely follows the <a href="http://url.spec.whatwg.org/">URL Standard</a> and
+the associated
+<a href="https://github.com/w3c/web-platform-tests/tree/master/url">web-platform-tests</a>, so this
+serves as a good comparison versus the standard itself.
+
+<p>The output will be colored <span class="pass">dark green</span> unless a difference occurs
+between the two parsers in which case the affected URL component will be colored
+<span class="fail">red</span>.
+
+<form>
+  <label for="url">URL:</label>
+  <input id="url" value="https://example.com/" autofocus>
+
+  <label for="base">Base URL:</label>
+  <input id="base" value="about:blank">
+</form>
+
+<h2>Browser's URL components</h2>
+
+<table class="output" id="browser-output">
+  <tr id="href"><th>href</th><td></td></tr>
+  <tr id="protocol"><th>protocol</th><td></td></tr>
+  <tr id="username"><th>username</th><td></td></tr>
+  <tr id="password"><th>password</th><td></td></tr>
+  <tr id="port"><th>port</th><td></td></tr>
+  <tr id="hostname"><th>hostname</th><td></td></tr>
+  <tr id="pathname"><th>pathname</th><td></td></tr>
+  <tr id="search"><th>search</th><td></td></tr>
+  <tr id="hash"><th>hash</th><td></td></tr>
+</table>
+
+<p class="output error" id="browser-error"></p>
+
+<h2>jsdom/whatwg-url's components</h2>
+
+<table class="output" id="jsdom-output">
+  <tr id="href"><th>href</th><td></td></tr>
+  <tr id="protocol"><th>protocol</th><td></td></tr>
+  <tr id="username"><th>username</th><td></td></tr>
+  <tr id="password"><th>password</th><td></td></tr>
+  <tr id="port"><th>port</th><td></td></tr>
+  <tr id="hostname"><th>hostname</th><td></td></tr>
+  <tr id="pathname"><th>pathname</th><td></td></tr>
+  <tr id="search"><th>search</th><td></td></tr>
+  <tr id="hash"><th>hash</th><td></td></tr>
+</table>
+
+<p class="output error" id="jsdom-error"></p>
+
+<footer>
+  <a href="https://github.com/jsdom/whatwg-url/tree/master/live-viewer">Fork me on GitHub!</a>
+</footer>
+
+<iframe hidden id="browser-iframe"></iframe>
+
+<script src="live-viewer.js"></script>
diff --git a/live-viewer/live-viewer.js b/live-viewer/live-viewer.js
@@ -0,0 +1,114 @@
+"use strict";
+(() => {
+  const urlInput = document.querySelector("#url");
+  const baseInput = document.querySelector("#base");
+
+  // Use an iframe to avoid <base> affecting the main page. This is especially bad in Edge where it
+  // appears to break Edge's DevTools.
+  const browserIframeDocument = document.querySelector("#browser-iframe").contentDocument;
+  const browserAnchor = browserIframeDocument.createElement("a");
+  const browserBase = browserIframeDocument.createElement("base");
+  browserIframeDocument.head.appendChild(browserBase);
+  browserIframeDocument.body.appendChild(browserAnchor);
+
+  const components = [
+    "href", "protocol", "username",
+    "password", "port", "hostname",
+    "pathname", "search", "hash"
+  ];
+
+  urlInput.addEventListener("input", update);
+  baseInput.addEventListener("input", update);
+  setFromFragment();
+  update();
+
+  function update() {
+    const browserResult = getBrowserResult();
+    const jsdomResult = getJsdomResult();
+    const mismatchedComponents = getMismatchedComponents(browserResult, jsdomResult);
+
+    setResult("browser", browserResult, mismatchedComponents);
+    setResult("jsdom", jsdomResult, mismatchedComponents);
+    updateFragmentForSharing();
+  }
+
+  function setResult(kind, result, mismatchedComponents) {
+    const output = document.querySelector(`#${kind}-output`);
+    const error = document.querySelector(`#${kind}-error`);
+
+    if (result instanceof Error) {
+      output.hidden = true;
+      error.hidden = false;
+      error.textContent = result.toString();
+    } else {
+      output.hidden = false;
+      error.hidden = true;
+      for (const component of components) {
+        const componentEl = output.querySelector(`#${component}`).querySelector("td");
+        setComponentElValue(componentEl, result[component]);
+        setComponentElMismatch(componentEl, mismatchedComponents.has(component));
+      }
+    }
+  }
+
+  function setComponentElValue(componentEl, value) {
+    const isEmptyString = value === "";
+    componentEl.textContent = isEmptyString ? "(empty string)" : value;
+    componentEl.classList.toggle("empty-string", isEmptyString);
+  }
+
+  function setComponentElMismatch(componentEl, isMismatched) {
+    componentEl.classList.toggle("pass", !isMismatched);
+    componentEl.classList.toggle("fail", isMismatched);
+  }
+
+  function getMismatchedComponents(result1, result2) {
+    const mismatched = new Set();
+    for (const component of components) {
+      if (result1[component] !== result2[component]) {
+        mismatched.add(component);
+      }
+    }
+    return mismatched;
+  }
+
+  function getBrowserResult() {
+    // First make sure the base is not invalid by testing it against an about:blank base.
+    browserBase.href = "about:blank";
+    browserAnchor.href = baseInput.value;
+    if (browserAnchor.protocol === ":") {
+      return new Error("Browser could not parse the base URL");
+    }
+
+    // Now actually parse the URL against the base.
+    browserAnchor.href = urlInput.value;
+    browserBase.href = baseInput.value;
+    if (browserAnchor.protocol === ":") {
+      return new Error("Browser could not parse the input");
+    }
+
+    return browserAnchor;
+  }
+
+  function getJsdomResult() {
+    try {
+      return new whatwgURL.URL(urlInput.value, baseInput.value);
+    } catch (e) {
+      return e;
+    }
+  }
+
+  function updateFragmentForSharing() {
+    location.hash = `url=${btoa(urlInput.value)}&base=${btoa(baseInput.value)}`;
+  }
+
+  function setFromFragment() {
+    const pieces = /#url=([^&]+)&base=(.*)/.exec(location.hash);
+    if (!pieces) {
+      return;
+    }
+    const [, urlEncoded, baseEncoded] = pieces;
+    urlInput.value = atob(urlEncoded);
+    baseInput.value = atob(baseEncoded);
+  }
+})();
diff --git a/live-viewer/style.css b/live-viewer/style.css
@@ -0,0 +1,87 @@
+* {
+  font-family: Georgia;
+  box-sizing: border-box;
+}
+
+body {
+  max-width: 70em;
+  margin: 12px;
+}
+
+h1, h2, h3, h4, h5, h6 {
+  font-style: italic;
+  color: DarkBlue;
+  margin-bottom: 0.2em;
+}
+
+h1 {
+  margin-top: 0;
+}
+
+h2, h3, h4, h5, h6 {
+  margin-top: 1em;
+}
+
+h2 {
+  font-size: 1.5em;
+  font-weight: bold;
+}
+
+p {
+  margin-top: 0.5em;
+  word-spacing: 0.3ex;
+}
+
+footer {
+  position: absolute;
+  top: 1em;
+  right: 1em;
+}
+
+form label {
+  display: block;
+  margin-bottom: 6px;
+}
+
+form input {
+  width: 90%;
+  margin-bottom: 20px;
+  padding: 3px;
+}
+
+.output {
+  background-color: whitesmoke;
+  border: 1px dashed crimson;
+  width: 95%;
+  padding: 1em;
+  margin: 0;
+}
+
+.output.error {
+  color: Crimson;
+}
+
+.output th {
+  width: 100px;
+  text-align: right;
+  padding-right: 20px;
+}
+
+.output td {
+  font-family: 'Bitstream Vera Sans Mono', 'Andale Mono', 'Lucida Console', monospace, fixed;
+}
+
+.pass {
+  color: green;
+}
+
+.fail {
+  color: red;
+}
+
+.output td.empty-string {
+  font-family: inherit;
+  font-size: smaller;
+  font-style: italic;
+  color: #CCC;
+}