<?php
class Blitzkreig
	{

		function excerpt(){
			echo $this->get_excerpt();
		}
		
		function get_excerpt($max_length){
			global $post;
			
			if (!$max_length) {
				$max_length = 100;
			}
			
			// If they've manually put in an excerpt, let it go!
			if ($post->post_excerpt) return $post->post_excerpt;
			
			// Check to see if it's a password protected post
			if ($post->post_password) {
				if ($_COOKIE['wp-postpass_'.COOKIEHASH] != $post->post_password) {
					if(is_feed()) {
						return __('This is a protected post');
					} else {
						return  get_the_password_form();
					}
				}
			}
			
			if( strpos($post->post_content, '<!--more-->') ) { // There's a more link
				$temp_ex = explode('<!--more-->', $post->post_content, 2);
				$excerpt =  $temp_ex[0];
			} else {
				$temp_ex = explode(' ', $post->post_content);  // Split up the spaces
				$length = count($temp_ex) < $max_length ? count($temp_ex) : $max_length;
				for ($i=0; $i<$length; $i++) $excerpt .= $temp_ex[$i] . ' ';
			}
			
			$excerpt = $excerpt . '...';
			$excerpt = balanceTags($excerpt);
			$excerpt = apply_filters('the_excerpt', $excerpt);
			
			return $excerpt;
		}
		
		function time_since(){
			
			$older_date = abs(strtotime(get_the_time() . " GMT"));
			$newer_date = false;
			
			$chunks = array(
			array(60 * 60 * 24 * 365 , 'year'),
			array(60 * 60 * 24 * 30 , 'month'),
			array(60 * 60 * 24 * 7, 'week'),
			array(60 * 60 * 24 , 'day'),
			array(60 * 60 , 'hour'),
			array(60 , 'minute'),
			);

			$newer_date = ($newer_date == false) ? (time()+(60*60*get_settings("gmt_offset"))) : $newer_date;

			$since = $newer_date - $older_date;

			for ($i = 0, $j = count($chunks); $i < $j; $i++) {
				$seconds = $chunks[$i][0];
				$name = $chunks[$i][1];

				if (($count = floor($since / $seconds)) != 0) {
					break;
				}
			}

			$output = ($count == 1) ? '1 '.$name : "$count {$name}s";

			if ($i + 1 < $j) {
				$seconds2 = $chunks[$i + 1][0];
				$name2 = $chunks[$i + 1][1];

				if (($count2 = floor(($since - ($seconds * $count)) / $seconds2)) != 0) {
					$output .= ($count2 == 1) ? ', 1 '.$name2 : ", $count2 {$name2}s";
				}
			}
			

			echo $output;
		}
		
	}
	
$blitz = new Blitzkreig();