system/helpers/html_helper.php

<?php  if (!defined('BASEPATH')) exit('No direct script access allowed');
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP 4.3.2 or newer
 *
 * @package		CodeIgniter
 * @author		ExpressionEngine Dev Team
 * @copyright	Copyright (c) 2006, EllisLab, Inc.
 * @license		http://codeigniter.com/user_guide/license.html
 * @link		http://codeigniter.com
 * @since		Version 1.0
 * @filesource
 */

// ------------------------------------------------------------------------

/**
 * CodeIgniter HTML Helpers
 *
 * @package		CodeIgniter
 * @subpackage	Helpers
 * @category	Helpers
 * @author		ExpressionEngine Dev Team
 * @link		http://codeigniter.com/user_guide/helpers/html_helper.html
 */

// ------------------------------------------------------------------------

/**
 * Heading
 *
 * Generates an HTML heading tag.  First param is the data.
 * Second param is the size of the heading tag.
 *
 * @access	public
 * @param	string
 * @param	integer
 * @return	string
 */	
if (! function_exists('heading'))
{
	function heading($data = '', $h = '1')
	{
		return "<h".$h.">".$data."</h".$h.">";
	}
}

// ------------------------------------------------------------------------

/**
 * Unordered List
 *
 * Generates an HTML unordered list from an single or multi-dimensional array.
 *
 * @access	public
 * @param	array
 * @param	mixed
 * @return	string
 */	
if (! function_exists('ul'))
{
	function ul($list, $attributes = '')
	{
		return _list('ul', $list, $attributes);
	}
}

// ------------------------------------------------------------------------

/**
 * Ordered List
 *
 * Generates an HTML ordered list from an single or multi-dimensional array.
 *
 * @access	public
 * @param	array
 * @param	mixed
 * @return	string
 */	
if (! function_exists('ol'))
{
	function ol($list, $attributes = '')
	{
		return _list('ol', $list, $attributes);
	}
}

// ------------------------------------------------------------------------

/**
 * Generates the list
 *
 * Generates an HTML ordered list from an single or multi-dimensional array.
 *
 * @access	private
 * @param	string
 * @param	mixed		
 * @param	mixed		
 * @param	intiger		
 * @return	string
 */	
if (! function_exists('_list'))
{
	function _list($type = 'ul', $list, $attributes = '', $depth = 0)
	{
		// If an array wasn't submitted there's nothing to do...
		if (! is_array($list))
		{
			return $list;
		}
	
		// Set the indentation based on the depth
		$out = str_repeat(" ", $depth);
	
		// Were any attributes submitted?  If so generate a string
		if (is_array($attributes))
		{
			$atts = '';
			foreach ($attributes as $key => $val)
			{
				$atts .= ' ' . $key . '="' . $val . '"';
			}
			$attributes = $atts;
		}
	
		// Write the opening list tag
		$out .= "<".$type.$attributes.">\n";

		// Cycle through the list elements.  If an array is 
		// encountered we will recursively call _list()

		static $_last_list_item = '';
		foreach ($list as $key => $val)
		{	
			$_last_list_item = $key;

			$out .= str_repeat(" ", $depth + 2);
			$out .= "<li>";
		
			if (! is_array($val))
			{
				$out .= $val;
			}
			else
			{
				$out .= $_last_list_item."\n";
				$out .= _list($type, $val, '', $depth + 4);
				$out .= str_repeat(" ", $depth + 2);
			}

			$out .= "</li>\n";		
		}

		// Set the indentation for the closing tag
		$out .= str_repeat(" ", $depth);
	
		// Write the closing list tag
		$out .= "</".$type.">\n";

		return $out;
	}
}
	
// ------------------------------------------------------------------------

/**
 * Generates HTML BR tags based on number supplied
 *
 * @access	public
 * @param	integer
 * @return	string
 */	
if (! function_exists('br'))
{
	function br($num = 1)
	{
		return str_repeat("<br />", $num);
	}
}
	
// ------------------------------------------------------------------------

/**
 * Image
 *
 * Generates an <img /> element
 *
 * @access	public
 * @param	mixed
 * @return	string
 */	
if (! function_exists('img'))
{
	function img($src = '', $index_page = FALSE)
	{
		if (! is_array($src) )
		{
			$src = array('src' => $src);
		}

		$img = '<img';
		
		foreach ($src as $k=>$v)
		{

			if ($k == 'src' AND strpos($v, '://') === FALSE)
			{
				$CI =& get_instance();

				if ($index_page === TRUE)
				{
					$img .= ' src="'.$CI->config->site_url($v).'" ';
				}
				else
				{
					$img .= ' src="'.$CI->config->slash_item('base_url').$v.'" ';
				}
			}
			else
			{
				$img .= " $k=\"$v\" ";
			}
		}

		$img .= '/>';

		return $img;
	}
}

// ------------------------------------------------------------------------

/**
 * Link
 *
 * Generates link to a CSS file
 *
 * @access	public
 * @param	mixed	stylesheet hrefs or an array
 * @param	string	rel
 * @param	string	type
 * @param	string	title
 * @param	string	media
 * @param	boolean	should index_page be added to the css path 
 * @return	string
 */	
if (! function_exists('link_tag'))
{
	function link_tag($href = '', $rel = 'stylesheet', $type = 'text/css', $title = '', $media = '', $index_page = FALSE)
	{
		$CI =& get_instance();

		$link = '<link ';

		if (is_array($href))
		{
			foreach ($href as $k=>$v)
			{
				if ($k == 'href' AND strpos($v, '://') === FALSE)
				{
					if ($index_page === TRUE)
					{
						$link .= ' href="'.$CI->config->site_url($v).'" ';
					}
					else
					{
						$link .= ' href="'.$CI->config->slash_item('base_url').$v.'" ';
					}
				}
				else
				{
					$link .= "$k=\"$v\" ";
				}
			}
			
			$link .= "/>\n";
		}
		else
		{
			if ( strpos($href, '://') !== FALSE)
			{
				$link .= ' href="'.$href.'" ';
			}
			elseif ($index_page === TRUE)
			{
				$link .= ' href="'.$CI->config->site_url($href).'" ';
			}
			else
			{
				$link .= ' href="'.$CI->config->slash_item('base_url').$href.'" ';
			}
				
			$link .= 'rel="'.$rel.'" type="'.$type.'" ';
			
			if ($media	!= '')
			{
				$link .= 'media="'.$media.'" ';
			}

			if ($title	!= '')
			{
				$link .= 'title="'.$title.'" ';
			}
			
			$link .= '/>'."\n";
		}

	
		return $link;
	}
}

// ------------------------------------------------------------------------

/**
 * Generates meta tags from an array of key/values
 *
 * @access	public
 * @param	array
 * @return	string
 */	
if (! function_exists('meta'))
{
	function meta($meta = array(), $newline = "\n")
	{
		$str = '';
		foreach ($meta as $key => $val)
		{
			$str .= '<meta http-equiv="'.$key.'" content="'.$val.'" />'.$newline;
		}

		return $str;
	}
}

// ------------------------------------------------------------------------

/**
 * Generates non-breaking space entities based on number supplied
 *
 * @access	public
 * @param	integer
 * @return	string
 */	
if (! function_exists('nbs'))
{
	function nbs($num = 1)
	{
		return str_repeat("&nbsp;", $num);
	}
}