Initial commit

Signed-off-by: Florian Pritz <bluewind@xssn.at>

1 files changed, 244 insertions, 0 deletions

diff --git a/system/libraries/Pagination.php b/system/libraries/Pagination.php
new file mode 100644
index 000000000..d73c58e08
--- /dev/null
+++ b/system/libraries/Pagination.php
@@ -0,0 +1,244 @@
+<?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) 2008 - 2009, EllisLab, Inc.
+ * @license		http://codeigniter.com/user_guide/license.html
+ * @link		http://codeigniter.com
+ * @since		Version 1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * Pagination Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Pagination
+ * @author		ExpressionEngine Dev Team
+ * @link		http://codeigniter.com/user_guide/libraries/pagination.html
+ */
+class CI_Pagination {
+
+	var $base_url			= ''; // The page we are linking to
+	var $total_rows  		= ''; // Total number of items (database results)
+	var $per_page	 		= 10; // Max number of items you want shown per page
+	var $num_links			=  2; // Number of "digit" links to show before/after the currently viewed page
+	var $cur_page	 		=  0; // The current page being viewed
+	var $first_link   		= '&lsaquo; First';
+	var $next_link			= '&gt;';
+	var $prev_link			= '&lt;';
+	var $last_link			= 'Last &rsaquo;';
+	var $uri_segment		= 3;
+	var $full_tag_open		= '';
+	var $full_tag_close		= '';
+	var $first_tag_open		= '';
+	var $first_tag_close	= '&nbsp;';
+	var $last_tag_open		= '&nbsp;';
+	var $last_tag_close		= '';
+	var $cur_tag_open		= '&nbsp;<strong>';
+	var $cur_tag_close		= '</strong>';
+	var $next_tag_open		= '&nbsp;';
+	var $next_tag_close		= '&nbsp;';
+	var $prev_tag_open		= '&nbsp;';
+	var $prev_tag_close		= '';
+	var $num_tag_open		= '&nbsp;';
+	var $num_tag_close		= '';
+	var $page_query_string	= FALSE;
+	var $query_string_segment = 'per_page';
+
+	/**
+	 * Constructor
+	 *
+	 * @access	public
+	 * @param	array	initialization parameters
+	 */
+	function CI_Pagination($params = array())
+	{
+		if (count($params) > 0)
+		{
+			$this->initialize($params);
+		}
+
+		log_message('debug', "Pagination Class Initialized");
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize Preferences
+	 *
+	 * @access	public
+	 * @param	array	initialization parameters
+	 * @return	void
+	 */
+	function initialize($params = array())
+	{
+		if (count($params) > 0)
+		{
+			foreach ($params as $key => $val)
+			{
+				if (isset($this->$key))
+				{
+					$this->$key = $val;
+				}
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Generate the pagination links
+	 *
+	 * @access	public
+	 * @return	string
+	 */
+	function create_links()
+	{
+		// If our item count or per-page total is zero there is no need to continue.
+		if ($this->total_rows == 0 OR $this->per_page == 0)
+		{
+			return '';
+		}
+
+		// Calculate the total number of pages
+		$num_pages = ceil($this->total_rows / $this->per_page);
+
+		// Is there only one page? Hm... nothing more to do here then.
+		if ($num_pages == 1)
+		{
+			return '';
+		}
+
+		// Determine the current page number.
+		$CI =& get_instance();
+
+		if ($CI->config->item('enable_query_strings') === TRUE OR $this->page_query_string === TRUE)
+		{
+			if ($CI->input->get($this->query_string_segment) != 0)
+			{
+				$this->cur_page = $CI->input->get($this->query_string_segment);
+
+				// Prep the current page - no funny business!
+				$this->cur_page = (int) $this->cur_page;
+			}
+		}
+		else
+		{
+			if ($CI->uri->segment($this->uri_segment) != 0)
+			{
+				$this->cur_page = $CI->uri->segment($this->uri_segment);
+
+				// Prep the current page - no funny business!
+				$this->cur_page = (int) $this->cur_page;
+			}
+		}
+
+		$this->num_links = (int)$this->num_links;
+
+		if ($this->num_links < 1)
+		{
+			show_error('Your number of links must be a positive number.');
+		}
+
+		if ( ! is_numeric($this->cur_page))
+		{
+			$this->cur_page = 0;
+		}
+
+		// Is the page number beyond the result range?
+		// If so we show the last page
+		if ($this->cur_page > $this->total_rows)
+		{
+			$this->cur_page = ($num_pages - 1) * $this->per_page;
+		}
+
+		$uri_page_number = $this->cur_page;
+		$this->cur_page = floor(($this->cur_page/$this->per_page) + 1);
+
+		// Calculate the start and end numbers. These determine
+		// which number to start and end the digit links with
+		$start = (($this->cur_page - $this->num_links) > 0) ? $this->cur_page - ($this->num_links - 1) : 1;
+		$end   = (($this->cur_page + $this->num_links) < $num_pages) ? $this->cur_page + $this->num_links : $num_pages;
+
+		// Is pagination being used over GET or POST?  If get, add a per_page query
+		// string. If post, add a trailing slash to the base URL if needed
+		if ($CI->config->item('enable_query_strings') === TRUE OR $this->page_query_string === TRUE)
+		{
+			$this->base_url = rtrim($this->base_url).'&amp;'.$this->query_string_segment.'=';
+		}
+		else
+		{
+			$this->base_url = rtrim($this->base_url, '/') .'/';
+		}
+
+  		// And here we go...
+		$output = '';
+
+		// Render the "First" link
+		if  ($this->cur_page > ($this->num_links + 1))
+		{
+			$output .= $this->first_tag_open.'<a href="'.$this->base_url.'">'.$this->first_link.'</a>'.$this->first_tag_close;
+		}
+
+		// Render the "previous" link
+		if  ($this->cur_page != 1)
+		{
+			$i = $uri_page_number - $this->per_page;
+			if ($i == 0) $i = '';
+			$output .= $this->prev_tag_open.'<a href="'.$this->base_url.$i.'">'.$this->prev_link.'</a>'.$this->prev_tag_close;
+		}
+
+		// Write the digit links
+		for ($loop = $start -1; $loop <= $end; $loop++)
+		{
+			$i = ($loop * $this->per_page) - $this->per_page;
+
+			if ($i >= 0)
+			{
+				if ($this->cur_page == $loop)
+				{
+					$output .= $this->cur_tag_open.$loop.$this->cur_tag_close; // Current page
+				}
+				else
+				{
+					$n = ($i == 0) ? '' : $i;
+					$output .= $this->num_tag_open.'<a href="'.$this->base_url.$n.'">'.$loop.'</a>'.$this->num_tag_close;
+				}
+			}
+		}
+
+		// Render the "next" link
+		if ($this->cur_page < $num_pages)
+		{
+			$output .= $this->next_tag_open.'<a href="'.$this->base_url.($this->cur_page * $this->per_page).'">'.$this->next_link.'</a>'.$this->next_tag_close;
+		}
+
+		// Render the "Last" link
+		if (($this->cur_page + $this->num_links) < $num_pages)
+		{
+			$i = (($num_pages * $this->per_page) - $this->per_page);
+			$output .= $this->last_tag_open.'<a href="'.$this->base_url.$i.'">'.$this->last_link.'</a>'.$this->last_tag_close;
+		}
+
+		// Kill double slashes.  Note: Sometimes we can end up with a double slash
+		// in the penultimate link so we'll kill all double slashes.
+		$output = preg_replace("#([^:])//+#", "\\1/", $output);
+
+		// Add the wrapper HTML if exists
+		$output = $this->full_tag_open.$output.$this->full_tag_close;
+
+		return $output;
+	}
+}
+// END Pagination Class
+
+/* End of file Pagination.php */
+/* Location: ./system/libraries/Pagination.php */
\ No newline at end of file