mirror of
https://github.com/github/semantic.git
synced 2024-12-21 13:51:44 +03:00
248 lines
8.0 KiB
HTML
248 lines
8.0 KiB
HTML
<!doctype html>
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<html>
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<head>
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<title>semantic-diff</title>
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<style type="text/css">
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body {
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margin: 0;
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padding: 0;
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font-family: monospace;
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}
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.insert {
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background-color: #eaffea;
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outline: 1px solid #c1e9c1;
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}
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.delete {
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background-color: #ffecec;
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outline: 1px solid #f1c0c0;
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}
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.replace {
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background-color: #eee;
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}
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#diff div, #diff ul, #diff li, #diff dl, #diff dd, #diff span {
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white-space: pre-wrap;
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display: inline;
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margin: 0;
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padding: 0;
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}
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#diff dt {
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display: none;
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}
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</style>
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<script type="text/javascript">
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function loadJSON(path, callback) {
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var request = new XMLHttpRequest();
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request.overrideMimeType("application/json");
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request.open('GET', '' + path, true);
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request.onreadystatechange = function () {
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if (request.readyState == 4 && (request.status == "200" || request.status == 0)) {
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callback(JSON.parse(request.responseText));
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}
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};
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request.send(null);
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}
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function wrap(tagName, element) {
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if (element == null) { return null; }
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var node = document.createElement(tagName);
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node.appendChild(element);
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return node;
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}
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function Delete(before, a, b) {
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this.before = new Term(before, a);
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return this;
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}
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function Insert(after, a, b) {
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this.after = new Term(after, b);
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return this;
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}
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function Replace(before, after, a, b) {
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this.before = new Term(before, a);
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this.after = new Term(after, b);
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return this;
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}
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function Term(json, source) {
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this.source = source;
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this.range = json.extract;
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this.syntax = syntax(json.unwrap, function(x) { return new Term(x, source); });
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this.syntax.source = source;
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this.syntax.range = this.range;
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return this;
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}
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function toDOM(model) {
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var element;
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if (model instanceof Delete) {
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element = document.createElement("div");
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element.classList.add("patch");
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element.classList.add("delete");
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element.appendChild(toDOM(model.before));
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}
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if (model instanceof Insert) {
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element = document.createElement("div");
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element.classList.add("patch");
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element.classList.add("insert");
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element.appendChild(toDOM(model.after));
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}
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if (model instanceof Replace) {
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element = document.createElement("div");
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element.classList.add("patch");
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element.classList.add("replace");
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var before = toDOM(model.before);
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before.classList.add("delete");
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element.appendChild(before);
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var after = toDOM(model.after);
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after.classList.add("insert");
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element.appendChild(after);
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}
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if (model instanceof Term) {
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element = document.createElement("div");
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element.classList.add("term");
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element.appendChild(toDOM(model.syntax));
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}
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if (model instanceof Diff) {
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element = document.createElement("div");
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element.classList.add("diff");
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if (model.pure != null) {
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element.classList.add("pure");
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element.appendChild(toDOM(model.pure));
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} else if(model.roll != null) {
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element.classList.add("roll");
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element.appendChild(toDOM(model.roll));
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}
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}
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if (model instanceof Indexed) {
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element = document.createElement("ul");
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if (model.source != null && model.range != null) {
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var previous = model.range[0];
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for (i in model.values) {
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var value = model.values[i];
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element.appendChild(document.createTextNode(model.source.substr(previous, value.range[0] - previous)));
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element.appendChild(wrap("li", toDOM(value)));
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previous = value.range[0] + value.range[1];
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}
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element.appendChild(document.createTextNode(model.source.substr(previous, model.range[0] + model.range[1] - previous)));
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} else {
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for (i in model.values) {
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element.appendChild(wrap("li", toDOM(model.values[i])));
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}
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}
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}
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if (model instanceof Keyed) {
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element = document.createElement("dl");
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if (model.source != null && model.range != null) {
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var values = [];
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for (k in model.values) {
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values.push([ k, model.values[k] ]);
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}
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values.sort(function(a, b) {
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if (a[1].range[0] < b[1].range[0]) {
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return -1;
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} else if (a[1].range[0] > b[1].range[0]) {
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return 1;
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}
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return 0;
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});
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var previous = model.range[0];
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for (i in values) {
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var k = values[i][0];
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var value = values[i][1];
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element.appendChild(document.createTextNode(model.source.substr(previous, value.range[0] - previous)));
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var dt = document.createElement("dt");
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dt.textContent = k;
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element.appendChild(dt);
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element.appendChild(wrap("dd", toDOM(value)));
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previous = value.range[0] + value.range[1];
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}
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element.appendChild(document.createTextNode(model.source.substr(previous, model.range[0] + model.range[1] - previous)));
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} else {
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for (k in model.values) {
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var dt = document.createElement("dt");
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dt.textContent = k;
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element.appendChild(dt);
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element.appendChild(wrap("dd", toDOM(model.values[k])));
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}
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}
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}
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if (model instanceof Leaf) {
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element = document.createElement("span");
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if (model.source != null && model.range != null) {
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element.textContent = model.source.substr(model.range[0], model.range[1]);
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}
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// ?
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}
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return element;
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}
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function patch(patch, a, b) {
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if (patch.delete != null) { return new Delete(patch.delete, a, b); }
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if (patch.insert != null) { return new Insert(patch.insert, a, b); }
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if (patch.replace != null) { return new Replace(patch.replace.before, patch.replace.after, a, b); }
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}
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function Indexed(array, continuation) {
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this.values = [];
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for (index in array) {
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this.values.push(continuation(array[index]));
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}
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return this;
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}
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function Keyed(object, continuation) {
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this.values = {};
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for (key in object) {
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this.values[key] = continuation(object[key]);
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}
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return this;
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}
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function Leaf(object) {
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this.value = object;
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return this;
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}
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function syntax(json, continuation) {
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if (json instanceof Array) { return new Indexed(json, continuation); }
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if (json instanceof Object) { return new Keyed(json, continuation); }
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return new Leaf(json);
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}
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function Diff(json, a, b) {
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if (json.pure != null) { this.pure = patch(json.pure, a, b); }
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if (json.roll != null) {
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this.ranges = json.extract;
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this.roll = syntax(json.roll.unwrap, function(x) { return new Diff(x, a, b); });
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}
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return this;
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}
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</script>
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</head>
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<body>
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<div id="diff"></div>
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<script type="text/javascript">
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loadJSON('diff.json', function (json) {
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var model = new Diff(json.diff, json.a, json.b);
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var dom = toDOM(model);
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var root = document.getElementById("diff");
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root.appendChild(dom);
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});
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</script>
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</body>
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</html>
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