User:WhitePhosphorus/js/CommentsinLocalTime.js

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//Gary King, "User:Gary King/comments in local time.js," Wikipedia, The Free Encyclopedia, http://en.wikipedia.org/w/index.php?title=User:Gary_King/comments_in_local_time.js&oldid=281324481 (accessed May 28, 2009). 

CommentsInLocalTime = (function()
{
	// mw.config.get('wgCanonicalNamespace') = unsafeWindow.mw.config.get('wgCanonicalNamespace')
 
	/*
		Settings
	*/
	if (typeof(LocalComments) == 'undefined')
		LocalComments = {};
 
	if (typeof(LocalComments.dateFormat) == 'undefined')
	{
		// Deprecated: LocalizeConfig
		if (typeof(LocalizeConfig) != 'undefined' && typeof(LocalizeConfig.dateFormat) != 'undefined' && LocalizeConfig.dateFormat != '')
			LocalComments.dateFormat = LocalizeConfig.dateFormat;
		else
			LocalComments.dateFormat = 'ymd';
	}
 
	if (typeof(LocalComments.timeFirst) == 'undefined')
		LocalComments.timeFirst = false;
 
	if (typeof(LocalComments.dateDifference) == 'undefined')
		LocalComments.dateDifference = true;
    if (typeof(LocalComments.twentyFourHours) == 'undefined')
		LocalComments.twentyFourHours = true;
    if (typeof(LocalComments.dayOfWeek) == 'undefined')
		LocalComments.dayOfWeek = true;
	/*
		End Settings
	*/
 
	if (mw.config.get('wgCanonicalNamespace') == '' || mw.config.get('wgCanonicalNamespace') == 'MediaWiki' || mw.config.get('wgCanonicalNamespace') == 'Special')
		return;
 
	var disabled_urls = new Array('action=history'), unique_url = false, wikiPreview = new Array('action=edit', 'action=submit');
	for (var i = 0; i < disabled_urls.length; i++)
	{
		if (document.location.href.indexOf(disabled_urls[i]) != -1)
			return;
	}
 
	for (var i = 0; i < wikiPreview.length; i++)
	{
		if (document.location.href.indexOf(wikiPreview[i]) != -1)
			unique_url = 'wikiPreview';
	}
 
	var element_id = unique_url ? unique_url : 'bodyContent';
	replace_text(document.getElementById(element_id), /(\d{4})年(\d{1,2})月(\d{1,2})日 \([一二三四五六日]\) (\d\d):(\d\d) \(UTC\)/g, adjust_time);
 
function add_leading_zero(number)
{
	if (number < 10)
		number = '0' + number;
	return number;
}
 
function adjust_time(original_timestamp, old_year, old_month, old_day, old_hour, old_minute, offset)
{
	var today = new Date(), yesterday = new Date(), tomorrow = new Date();
	yesterday.setDate(yesterday.getDate() - 1);
	tomorrow.setDate(tomorrow.getDate() + 1);
 
	// set the date entered
	var time = new Date();
	time.setUTCFullYear(old_year, old_month - 1, old_day);
	time.setUTCHours(old_hour);
	time.setUTCMinutes(old_minute);
 
	// determine the time offset
	var utc_offset = -1 * time.getTimezoneOffset() / 60;
	if (utc_offset >= 0)
		utc_offset = '+' + utc_offset;
	else
		utc_offset = '−' + Math.abs(utc_offset);
 
	// set the date bits to output
	var year = time.getFullYear(), month = add_leading_zero(time.getMonth() + 1);
	var day = time.getDate();
	var hour = parseInt(time.getHours()), minute = add_leading_zero(time.getMinutes());
 
	// output am or pm depending on the date and user config settings
    ampm = '';
	if (!LocalComments.twentyFourHours) {
        ampm = hour <= 11 ? '上午' : '下午';
        if (hour > 12) {
            hour -= 12;
        } else if (hour === 0) {
            hour = 12;
        }
    }
 
	// return 'today' or 'yesterday' if that is the case
	if (year == today.getFullYear() && month == add_leading_zero(today.getMonth() + 1) && day == today.getDate())
		var date = '今天';
	else if (year == yesterday.getFullYear() && month == add_leading_zero(yesterday.getMonth() + 1) && day == yesterday.getDate())
		var date = '昨天';
	else if (year == tomorrow.getFullYear() && month == add_leading_zero(tomorrow.getMonth() + 1) && day == tomorrow.getDate())
		var date = '明天';
	else
	{
		// calculate day of week
		day_names = new Array('星期日', '星期一', '星期二', '星期三', '星期四', '星期五', '星期六');
		day_of_the_week = day_names[time.getDay()];
 
		if (LocalComments.dateDifference)
		{
			// calculate time difference from today and the timestamp
			today = new Date(today.getYear(), today.getMonth(), today.getDate());
			time = new Date(time.getYear(), time.getMonth(), time.getDate());
 
			milliseconds_ago = today.getTime() - time.getTime();
			days_ago = Math.round(milliseconds_ago / 1000 / 60 / 60 / 24);
 
			var difference, difference_word = '', last = '';
			if (today.valueOf() >= time.valueOf())
			{
				difference = new Date(today.valueOf() - time.valueOf());
				difference_word = '前';
				if (days_ago <= 7)
					last = '上';
			}
			else
			{
				difference = new Date(time.valueOf() - today.valueOf());
				difference_word = '后';
				if (days_ago >= -7)
					last = '下';
			}
			var descriptive_difference = [];
 
			if (difference.getYear() - 70 > 0)
			{
				var years_ago = (difference.getYear() - 70) + '年';
				descriptive_difference.push(years_ago);
			}
			if (difference.getMonth() > 0)
			{
				var months_ago = difference.getMonth() + '个月';
				descriptive_difference.push(months_ago);
			}
			if (difference.getDate() > 0)
			{
				var new_days_ago = difference.getDate() - 1 + '日';
				descriptive_difference.push(new_days_ago);
			}
 
			descriptive_difference = ' (' + descriptive_difference.join('') + difference_word + ')';
		}
		else
		{
			descriptive_difference = '';
			last = '';
		}
 
		// format the date according to user preferences
		var formatted_date = '', month_name = convert_number_to_month(time.getMonth()), month = time.getMonth() + 1;
 
		switch (LocalComments.dateFormat.toLowerCase())
		{
			case 'ymd':
				formatted_date = year + '年' + add_leading_zero(month) + '月' + add_leading_zero(day) + '日';
				break;
			case 'dmy':
				formatted_date = day + ' ' + month_name + ' ' + year;
				break;
			case 'mdy':
				formatted_date = month_name + ' ' + day + ', ' + year;
				break;
			default:
				formatted_date = year + '-' + month + '-' + add_leading_zero(day);
		}
 
		var date = '';
                 if(LocalComments.dayOfWeek)
                 {
                             date=formatted_date + ', ' + last + day_of_the_week + descriptive_difference;
                 }
                 else  date=formatted_date + ', ' + descriptive_difference;
	}
 
	var time = ampm + add_leading_zero(hour) + ':' + minute;
 
	if (LocalComments.timeFirst)
		var return_date = time + ', ' + date + ' (UTC' + utc_offset + ')';
	else
		var return_date = date + ', ' + time + ' (UTC' + utc_offset + ')';
 
	return return_date;
}
 
function convert_month_to_number(month)
{
   var output = new Date(month + ' 1, 2001');
   return output.getMonth();
}
 
function convert_number_to_month(number)
{
	var month = new Array('一月', '二月', '三月', '四月', '五月', '六月', '七月', '八月', '九月', '十月', '十一月', '十二月');
	return month[number];
}
 
function replace_text(node, search, replace)
{
	if (node.nodeType == 3)
	{
		value = node.nodeValue;
		matches = value.match(search);
 
		if (matches != null)
		{
			node_parent_node = node.parentNode;
			old_node = node;
			// old_node_list = node.parentNode.childNodes;
 
			for (match = 0; match < matches.length; match++)
			{
				if (after_match != null && length != null)
					position = after_match.search(search) + before_match.length + length;
				else
					position = value.search(search);
 
				length = matches[match].toString().length;
				before_match = value.substring(0, position);
				var after_match = value.substring(position + length);
 
				first_span = document.createElement('span');			
				first_span.setAttribute('style', 'font-size: 85%; white-space: nowrap;');
 
				second_span = document.createElement('span');
				second_span.setAttribute('class', 'localcomments');
				second_span.setAttribute('title', matches[match]);
				second_span.appendChild(document.createTextNode(matches[match].toString().replace(search, replace)));
 
				first_span.appendChild(second_span);
 
				new_node = document.createDocumentFragment();
				new_node.appendChild(document.createTextNode(before_match));
				new_node.appendChild(first_span);
				new_node.appendChild(document.createTextNode(after_match));
 
				// new_node_list = new_node.childNodes;
				node_parent_node.replaceChild(new_node, old_node);
				// old_node_list = new_node_list;
 
				break;
			}
		}
	}
	else
	{
		var children = [], child = node.firstChild;
		while (child)
		{
			children[children.length] = child;
			child = child.nextSibling;
		}
 
		for (var child = 0; child < children.length; child++)
			replace_text(children[child], search, replace);
	}
}
 
});

checkScript = function() {
    if (window.location.href.indexOf('&disable=loco') === -1) {
        CommentsInLocalTime();
    }
}

runScript = function() {
    mw.hook('wikipage.content').add( function ( $content ) {
        setTimeout("checkScript();", 0);
    });
    $(window).load(function() {
        checkScript();
    });
};

if (typeof waitForScripts === 'function') {
    waitForScripts(runScript);
} else {
    runScript();
}