Format JSON data in a beautiful way.
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// ==UserScript==
// @name JSON formatter
// @namespace http://gerald.top
// @description Format JSON data in a beautiful way.
// @description:zh-CN 更加漂亮地显示JSON数据。
// @version 1.1.3
// @match *://*/*
// @grant GM_addStyle
// @grant GM_registerMenuCommand
// ==/UserScript==
function safeHTML(html) {
return String(html).replace(/[<&"]/g, function (key) {
return {
'<': '<',
'&': '&',
'"': '"',
}[key];
});
}
function join(list) {
var html = [];
var open = false;
var last = null;
var close = function () {
html.push('</li>');
open = false;
last = null;
};
list.forEach(function (item) {
if (open && !item.backwards)
close();
if (!open) {
html.push('<li>');
open = true;
}
if (item.backwards && last && last.forwards)
html.push(last.separator);
html.push(item.data);
if (!item.forwards)
close();
else
last = item;
});
if (open) html.push('</li>');
return html.join('');
}
function getHtml(data) {
var html = '<span class="' + (data.cls || 'value ' + typeof data.value) + '" ' +
'data-type="' + safeHTML(data.type || typeof data.value) + '" ' +
'data-value="' + safeHTML(data.value) + '">' + safeHTML(data.value) + '</span>';
return html;
}
function render(data) {
if (Array.isArray(data)) {
var arr = [];
var ret = {
backwards: true,
forwards: true,
separator: getHtml({value: ',', cls: 'separator'}),
};
arr.push(getHtml({value: '[', cls: 'operator'}));
if (data.length) {
arr.push('<ul>');
arr.push(join(data.map(render)));
arr.push('</ul>');
} else {
arr.push(getHtml({value: '', cls: 'separator'}));
ret.forwards = false;
}
arr.push(getHtml({value: ']', cls: 'operator'}));
ret.data = arr.join('');
return ret;
} else if (data === null)
return {data: getHtml({value: data, cls: 'value null'}), backwards: true};
else if (typeof data == 'object') {
var arr = [];
var ret = {
backwards: true,
forwards: true,
separator: getHtml({value: ',', cls: 'separator'}),
};
arr.push(getHtml({value: '{', cls: 'operator'}));
var objdata = [];
for (var key in data) {
objdata.push({
data: getHtml({value: key, cls: 'key'}),
forwards: true,
separator: getHtml({value: ':', cls: 'separator'}),
});
objdata.push(render(data[key]));
}
if (objdata.length) {
arr.push('<ul>');
arr.push(join(objdata));
arr.push('</ul>');
} else {
arr.push(getHtml({value: '', cls: 'separator'}));
ret.backwards = ret.forwards = false;
}
arr.push(getHtml({value: '}', cls: 'operator'}));
ret.data = arr.join('');
return ret;
} else
return {
backwards: true,
data: getHtml({value: data}),
};
}
function formatJSON() {
if (config.formatted) {
document.body.innerHTML = config.raw;
config.formatted = false;
} else {
if (!('raw' in config)) {
config.raw = document.body.innerHTML;
config.data = JSON.parse(document.body.innerText);
config.style = GM_addStyle(
'*{font-family:Microsoft YaHei,Tahoma;font-size:15px;}' +
'ul.root{padding-left:0;}' +
'li{list-style:none;}' +
'.separator{margin-right:.5em;}' +
'.number{color:darkorange;}' +
'.null{color:gray;}' +
'.key{color:brown;}' +
'.string{color:green;}' +
'.operator{color:blue;}' +
'.value{position:relative;cursor:pointer;}' +
'.popup{position:absolute;top:0;left:0;right:0;bottom:0;}' +
'.popup-data{position:absolute;top:0;left:0;width:100%;bottom:0;border:none;cursor:pointer;box-sizing:content-box;padding:2px;margin:-2px;outline:1px dotted gray;}' +
'.popup-info{position:absolute;top:100%;margin-top:.5em;padding:.5em;border-radius:.5em;box-shadow:0 0 1em gray;background:white;z-index:1;white-space:nowrap;color:black;}' +
'.info-key{font-weight:bold;}' +
'.info-val{color:dodgerblue;}' +
'.hide{display:none;}'
);
initPopup();
}
var ret = render(config.data);
document.body.innerHTML = '<ul class="root"><li>' + ret.data + '</li></ul>';
config.formatted = true;
bindEvents(document.body.querySelector('.root'));
}
}
function initPopup() {
var popup = document.createElement('div');
popup.className = 'popup';
var input = document.createElement('input');
input.className = 'popup-data';
input.readOnly = true;
popup.appendChild(input);
var info = document.createElement('div');
info.className = 'popup-info';
popup.appendChild(info);
var hide = function () {
var parent = popup.parentNode;
if (parent) parent.removeChild(popup);
};
input.addEventListener('mouseup', function (e) {
e.preventDefault();
this.select();
}, false);
popup.addEventListener('click', function (e) {
e.stopPropagation();
}, false);
document.addEventListener('click', hide, false);
config.popup = {
node: popup,
hide: hide,
show: function (target) {
target.appendChild(popup);
input.value = target.dataset.value || '';
input.select();
input.focus();
info.innerHTML = '<span class="info-key">type</span>: <span class="info-val">' + safeHTML(target.dataset.type) + '</span>';
},
};
}
function bindEvents(root) {
root.addEventListener('click', function (e) {
e.stopPropagation();
var target = e.target;
if (target.classList.contains('value'))
config.popup.show(target);
else
config.popup.hide();
}, false);
}
var config = {};
if (/\/json$/.test(document.contentType))
formatJSON();
GM_registerMenuCommand('Toggle JSON format', formatJSON);