将markdown文本粘贴至textarea，右键单击文本区，弹出菜单中选择“markdown -> bbcode”
// ==UserScript==
// @name markdown to bbcode
// @namespace https://bbs.kafan.cn/thread-2113607-1-1.html
// @description 将markdown文本粘贴至textarea，右键单击文本区，弹出菜单中选择“markdown -> bbcode”
// @version 0.1
// @author halffog
// @include http*
// @grant none
// ==/UserScript==
(function() {
'use strict';
var textareas = document.getElementsByTagName('textarea');
if (!textareas) return;
function $C(type, arr){
var e = document.createElement(type);
for(var [name, val] in Iterator(arr)){
e.setAttribute(name, val);
}
return e;
}
for (var i = 0; i < textareas.length; i++){
var textarea = textareas[i];
var menuitem = $C('menuitem',{label:'markdown -> bbcode'});
menuitem.addEventListener('click', function(){
var value = textarea.value;
var texts = value.split(/^>\s((?:.|\n>\s)*.*)$/gm);
value = '';
for (var j = 0; j < texts.length; j++){
var text = texts[j];
if (j%2 ==0){
text = text.replace(/^(\#{1,6})((?:.|\n)*?)(\#{1,6})$/gm, function(wholeMatch,m1,m2,m3){
var h_level = m1.length;
return (h_level == m3.length)?'<h' + h_level + '>' + m2 + '</h' + h_level + '>':wholeMatch;
});
text = text.replace(/\*((?:.|\n)*?)\*/g,'[i]$1[/i]');
text = text.replace(/__((?:.|\n)*?)__/g,'[b]$1[/b]');
text = text.replace(/\!\[((?:.|\n)*?)\]\((.*)\)/g,'[img=$2]$1[/img]');
text = text.replace(/\[((?:.|\n)*?)\]\((.*)\)/g,'[url=$2]$1[/url]');
}else{
text = '[code]' + text.replace(/^>\s/gm,'') + '[/code]';
}
value += text;
}
textarea.value = value;
},false);
var menu = $C('menu',{id:'markdown-to-bbcode-' + i,type:'context'});
menu.appendChild(menuitem);
textarea.appendChild(menu);
textarea.setAttribute('contextmenu', menu.id);
}
})();