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#!/usr/bin/rhino
/*
This is for now just reimplementation of tlrobinson's json-diff (http://tlrobinson.net/projects/javascript-fun/jsondiff/).
However, later I would like to incorporate algorightm from
https://github.com/cmsd2/xdiff (which is an implementation in Ruby of
http://pages.cs.wisc.edu/~yuanwang/xdiff.html)
*/
var jsonBoxA, jsonBoxB;
//var HashStore = {
// load : function(callback) {
// if (window.location.hash) {
// try {
// var hashObject = JSON.parse(decodeURIComponent(window.location.hash.slice(1)));
// callback && callback(hashObject.d);
// return;
// } catch (e) {
// console.log()
// }
// }
// callback && callback(null);
// },
// sync : function(object) {
// var hashObject = { d : object };
// window.location.hash = "#" + encodeURIComponent(JSON.stringify(hashObject));
// }
//};
//function init() {
// document.addEventListener("click", clickHandler, false);
// jsonBoxA = document.getElementById("jsonA");
// jsonBoxB = document.getElementById("jsonB");
// HashStore.load(function(data) {
// if (data) {
// jsonBoxA.value = data.a;
// jsonBoxB.value = data.b;
// }
// });
// startCompare();
//}
//function startCompare() {
// var aValue = jsonBoxA.value;
// var bValue = jsonBoxB.value;
// var objA, objB;
// try {
// objA = JSON.parse(aValue);
// jsonBoxA.style.backgroundColor = "";
// } catch(e) {
// jsonBoxA.style.backgroundColor = "rgba(255,0,0,0.5)";
// }
// try {
// objB = JSON.parse(bValue);
// jsonBoxB.style.backgroundColor = "";
// } catch(e) {
// jsonBoxB.style.backgroundColor = "rgba(255,0,0,0.5)";
// }
// HashStore.sync({
// a : aValue,
// b : bValue
// });
// results = document.getElementById("results");
// removeAllChildren(results);
// compareTree(objA, objB, "root", results);
//}
function compareTree(a, b, name, results) {
var typeA = typeofReal(a);
var typeB = typeofReal(b);
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);
}
else if (b === undefined) {
leafNode.setAttribute("class", "removed");
leafNode.appendChild(document.createTextNode(": " + aString));
leafNode.appendChild(typeSpanA);
}
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);
}
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) {
if (a.hasOwnProperty(i)) {
keys.push(i);
}
}
for (var i in b) {
if (b.hasOwnProperty(i)) {
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 removeAllChildren(node) {
var child;
while (child = node.lastChild) {
node.removeChild(child);
}
}
function typeofReal(value) {
return Array.isArray(value) ? "array" : typeof value;
}
function clickHandler(e) {
var 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");
}
}
/* vim: set ts=2 et sw=2 tw=80: */
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