add tlrobinson's json-diff

This commit is contained in:
Sami Samhuri 2010-11-24 21:53:52 -08:00
parent 6bfcf89c8e
commit 26fb28124b
4 changed files with 318 additions and 0 deletions

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<html>
<head>
<title>JSON Diff</title>
<meta charset=utf8>
<link rel="stylesheet" href="json-diff.css" type="text/css" media="screen" charset="utf-8">
<script type="text/javascript" charset="utf-8">
var jsonBoxA, jsonBoxB, n;
function init() {
document.addEventListener("click", clickHandler, false);
jsonBoxA = document.getElementById("jsonA");
jsonBoxB = document.getElementById("jsonB");
startCompare();
}
function swapBoxes() {
console.log('>>> swapBoxes()');
var tmp = jsonBoxA.value;
jsonBoxA.value = jsonBoxB.value;
jsonBoxB.value = tmp;
}
function clearBoxes() {
console.log('>>> clearBoxes()');
jsonBoxA.value = "";
jsonBoxB.value = "";
}
function startCompare() {
console.log('startCompare()');
var objA, objB;
n = 0;
jsonBoxA.style.backgroundColor = "";
jsonBoxB.style.backgroundColor = "";
try {
objA = eval("(" + jsonBoxA.value + ")");
} catch(e) {
jsonBoxA.style.backgroundColor = "rgba(255,0,0,0.5)";
}
try {
objB = eval("(" + jsonBoxB.value + ")");
} catch(e) {
jsonBoxB.style.backgroundColor = "rgba(255,0,0,0.5)";
}
results = document.getElementById("results");
while (results.firstChild)
results.removeChild(results.firstChild);
compareTree(objA, objB, "root", results);
}
function markChanged(node) {
document.getElementById('first').style.display = 'block';
node.setAttribute('id', 'change-' + n);
n += 1;
var nextNode = document.createElement('a');
nextNode.setAttribute('href', '#change-' + n);
nextNode.appendChild(document.createTextNode('↓ next change ↓'))
node.appendChild(nextNode);
}
function compareTree(a, b, name, results) {
var typeA = typeofReal(a);
var typeB = typeofReal(b);
console.log('compareTree(a=(' + typeA + ')' + a +
', b=(' + typeB + ')' + b +
', name=(' + typeof name + ')' + name +
', results=(' + typeof results + ')' + results + ')');
var typeSpanA = document.createElement("span");
typeSpanA.appendChild(document.createTextNode("(" + typeA + ")"))
typeSpanA.setAttribute("class", "typeName");
var typeSpanB = document.createElement("span");
typeSpanB.appendChild(document.createTextNode("(" + typeB + ")"))
typeSpanB.setAttribute("class", "typeName");
var aString = (typeA === "object" || typeA === "array") ? "": String(a) + " ";
var bString = (typeB === "object" || typeB === "array") ? "": String(b) + " ";
var leafNode = document.createElement("span");
leafNode.appendChild(document.createTextNode(name));
if (a === undefined)
{
leafNode.setAttribute("class", "added");
leafNode.appendChild(document.createTextNode(": " + bString));
leafNode.appendChild(typeSpanB);
markChanged(leafNode);
}
else if (b === undefined)
{
leafNode.setAttribute("class", "removed");
leafNode.appendChild(document.createTextNode(": " + aString));
leafNode.appendChild(typeSpanA);
markChanged(leafNode);
}
else if (typeA !== typeB || (typeA !== "object" && typeA !== "array" && a !== b))
{
leafNode.setAttribute("class", "changed");
leafNode.appendChild(document.createTextNode(": " + aString));
leafNode.appendChild(typeSpanA);
leafNode.appendChild(document.createTextNode(" => " + bString));
leafNode.appendChild(typeSpanB);
if (name === 'key') leafNode.setAttribute('class', 'changed key');
else markChanged(leafNode);
}
else
{
leafNode.appendChild(document.createTextNode(": " + aString));
leafNode.appendChild(typeSpanA);
}
if (typeA === "object" || typeA === "array" || typeB === "object" || typeB === "array")
{
var keys = [];
for (var i in a) keys.push(i);
for (var i in b) keys.push(i);
keys.sort();
var listNode = document.createElement("ul");
listNode.appendChild(leafNode);
for (var i = 0; i < keys.length; i++)
{
if (keys[i] === keys[i - 1])
continue;
var li = document.createElement("li");
listNode.appendChild(li);
compareTree(a && a[keys[i]], b && b[keys[i]], keys[i], li);
}
results.appendChild(listNode);
}
else
{
results.appendChild(leafNode);
}
}
function isArray(value) {
return value && typeof value === "object" && value.constructor === Array;
}
function typeofReal(value) {
return isArray(value) ? "array": value === null ? 'null' : typeof value;
}
function clickHandler(e) {
e = e || window.event;
if (e.target.nodeName.toUpperCase() === "UL")
{
if (e.target.getAttribute("closed") === "yes")
e.target.setAttribute("closed", "no");
else
e.target.setAttribute("closed", "yes");
}
}
</script>
</head>
<body onload="init();">
<p align="center" style="margin: 2em;">Courtesy of <a href="http://tlrobinson.net/projects/javascript-fun/jsondiff/">tlrobinson</a>.
<br>
This version differs in that it supports <code>null</code> values,<br>
downplays the significance of changed properties with the key <code>key</code>,<br>
and provides links to jump from one change to the next.</p>
<h2>JSON Diff</h2>
<div class="contentbox" id="instructions">
<ul>
<li>Paste some JSON in each of the text fields. Click "Compare" to see the diff.</li>
<li>Changed portions are displayed in <span class="changed">yellow</span>. Additions are displayed in <span class="added">green</span>. Deletions are displayed in <span class="removed">red</span>.</li>
<li>It also works as a JSON viewer. Click the disclosure triangles to display/hide portions of the JSON.</li>
<li>Invalid JSON is indicated by the text fields turning red.</li>
<li>Swap the contents of the text areas by clicking "Swap". Clear them by clicking "Clear".</li>
</ul>
</div>
<div class="contentbox" id="inputs">
<textarea id="jsonA">{
"__class":"SLUser",
"displayName":"Sami Samhuri",
"accountSuspended": false,
"newAttribute":null,
"addressStreet1":null,
"url":null,
"addressZip":null,
"email":"foo@bar.com",
"addressRegion":null,
"businessName":null,
"addressStreet2":null,
"addressCountry":null,
"hashedPassword":"dc7754ea14e2d4f07bb3ec6a099480f318529dce",
"uuid":"dc80bc3053d135e52411ce67bd758211"
}
</textarea>
<textarea id="jsonB">
{
"__class":"SLUser",
"displayName":"Foo Bar",
"accountSuspended": false,
"addressStreet1":"123 Fake St",
"url":"bar.com",
"addressZip":"V9C 0E6",
"email":"foo@bar.com",
"addressRegion":"BC",
"businessName":"stuff",
"addressStreet2":null,
"addressCountry":"Canada",
"hashedPassword":"dc7754ea14e2d4f07bb3ec6a099480f318529dce",
"uuid":"d0e11b7c73d483335ac7697b042e36c5"
}</textarea>
<input type="button" value="Compare" id="compare" onclick="startCompare();" />
<input type="button" value="Swap" id="swap" onclick="swapBoxes();"/>
<input type="button" value="Clear" id="clear" onclick="clearBoxes();"/>
</div>
<p align=center id=first style=display:none><a href=#change-0>first change</a></p>
<div class="contentbox" id="results">
</div>
<div class="contentbox" id="issues">
<h3>About</h3>
<p>JSON Diff is a simple way to visualize and compare <a href="http://json.org">JSON</a>.</p>
<h3>Known Issues</h3>
<ul>
<li>Diff algorithm not very intelligent when dealing with arrays</li>
<li>Probably doesn't work in IE</li>
</ul>
</div>
<br />
<br />
<p>
&copy; 2006-2010 Thomas Robinson.&nbsp;<a rel="license" href="http://creativecommons.org/licenses/by-nc/3.0/us/">Some rights reserved</a>. </p>
</div>
</body>
</html>

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body {
background-color: lightblue;
}
#results li > span, #results ul > span {
-moz-border-radius: 5px;
-webkit-border-radius: 5px;
padding-right: 5px;
padding-left: 5px;
}
#results li {
margin-top: 1px;
padding-left: 15px;
}
#results ul {
padding-left: 15px;
margin-left: -15px;
padding-top: 0px;
margin-top: 0px;
background: url(open.png) no-repeat 2px 5px;
list-style-type: none;
}
#results ul[closed="yes"] {
background: url(closed.png) no-repeat 2px 5px;
}
#results ul[closed="yes"] > * {
display: none;
}
#results ul[closed="yes"] > *:first-child {
display: block;
}
.typeName {
color: gray;
}
.changed {
background-color: #fcff7f;
}
.changed.key {
background-color: #eee;
}
.added {
background-color: #8bff7f;
}
.removed {
background-color: #fd7f7f;
}
textarea {
width: 49%;
height: 200px;
}
.contentbox {
border: 1px dashed black;
background-color: white;
padding: 15px;
margin: 10px;
}
h2 {
text-align: center;
margin: 0px;;
}
#results {
padding-left: 40px;
}
#inputs {
text-align: center;
}

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