テキスト置き換えスクリプト

readme.txt

暇つぶしに書いたテキスト置き換えスクリプト。
FirefoxとChromeで動作確認。

なぜか定期的に話題になるけど需要あるの？

Text-Replace.js

javascript:/*Text-Replace*/(function(){

var data = [
	{
		before: 'Griever',
		after : '┐(´ー｀)┌',
	},
	{
		before: 'Opera',
		after : '<span style="font-size:30pt; color:red;">Opera</span>',
	},
	['（ぁ', ''], /* before, after と書くのが怠い */
];


main(document.body);
window.addEventListener('AutoPagerize_DOMNodeInserted', function(event){
	main(event.target);
}, false);

function main(aNode) {
	var _range = document.createRange();
	_range.selectNodeContents(document.body);

	for (var i = 0; i < data.length; ++i) {
		var before = data[i].before || data[i][0];
		var after  = data[i].after  || data[i][1];
		var xpath = '//text()[contains(self::text(),' + escapeXPathExpr(before) + ') and not(ancestor::textarea) and not(ancestor::script) and not(ancestor::style)]';
		var result = document.evaluate(xpath, aNode, null, 7, null);
		var arr = [];
		for (var u = 0; u < result.snapshotLength; ++u) { arr[u] = result.snapshotItem(u); };
		for (var u = 0, node; node = arr[u]; ++u) {
			var v = node.nodeValue.split(before).join(after);
			var df = _range.createContextualFragment(v);
			var range = document.createRange();
			range.selectNode(node);
			range.deleteContents()
			range.insertNode(df);
		};
	};
}

/* http://d.hatena.ne.jp/amachang/20090917/1253179486 */
function escapeXPathExpr(text) {
	var matches = text.match(/[^"]+|"/g);
	function esc(t) {
		return t == '"' ? ('\'' + t + '\'') : ('"' + t + '"');
	}
	if (matches) {
		if (matches.length == 1) {
			return esc(matches[0]);
		} else {
			var results = [];
			for (var i = 0, len = matches.length; i < len; i ++) {
				results.push(esc(matches[i]));
			}
			return 'concat(' + results.join(', ') + ')';
		}
	} else {
		return '""';
	}
}

})(document);