View file pda.php

<?php
/*
Plugin Name: Wordpress PDA & iPhone
Plugin URI: http://imthi.com/wp-pda/
Description: This plugin helps the users to view your blog in a pda and iPhone browser.
Author: Imthiaz Rafiq
Version: 1.2.8
Author URI: http://imthi.com/
*/ 

class PDAPlugin{
	var $pda;
	var $iphone;
	
	function PDAPlugin(){
		$this->pda = false;
		$this->iphone = false;
		
		$defaultUserAgents = "Elaine/3.0, iPhone, iPod, Palm, EudoraWeb, Blazer, AvantGo, Windows CE, Cellphone, Small, MMEF20, Danger, hiptop, Proxinet, ProxiNet, Newt, PalmOS, NetFront, SHARP-TQ-GX10, SonyEricsson, SymbianOS, UP.Browser, UP.Link, TS21i-10, MOT-V, portalmmm, DoCoMo, Opera Mini, Palm, Handspring, Nokia, Kyocera, Samsung, Motorola, Mot, Smartphone, Blackberry, WAP, SonyEricsson, PlayStation Portable, LG, MMP,OPWV, Symbian, EPOC";
		
		if(get_option('pda_browser_agents')==false){
		    add_option('pda_browser_agents',$defaultUserAgents);
		}
		add_action('plugins_loaded',array(&$this,'detectPDA'));
    	add_action('admin_menu', array(&$this,'pdaAdminMenu'));
		add_filter('theme_root',array(&$this,'theme_root'));
		add_filter('theme_root_uri',array(&$this,'get_theme_root_uri'));
		add_filter('stylesheet',array(&$this,'get_stylesheet'));
		
		add_filter('post_link',array(&$this,'updateToIphoneLink'),10,2);
		add_filter('page_link',array(&$this,'updateToIphoneLink'),10,2);
		add_filter('category_link',array(&$this,'updateToIphoneLink'),10,2);
		add_filter('year_link',array(&$this,'updateToIphoneLink'),10,2);
		add_filter('month_link',array(&$this,'updateToIphoneLink'),10,2);
		add_filter('day_link',array(&$this,'updateToIphoneLink'),10,2);
		
		add_filter('template',array(&$this,'get_template'));
		add_filter('option_template',array(&$this,'get_template_directory'));
		add_filter('option_stylesheet',array(&$this,'get_template_directory'));
	}
	
	function pdaAdminMenu(){
    	if ( function_exists('add_submenu_page') ) {
    	    add_submenu_page('plugins.php', __('PDA'), __('PDA'),'manage_options' , 'pda-options' ,array(&$this,'pdaPluginOption'));
    	}
	    
	}
	
	function updateToIphoneLink($link,$value){
		if($this->iphone){
			if(strpos($link,'iphone')===false){
	    		if(strpos($link,'?')===false){
	    		    $link .= '?iphone=true';
	    		}else{
	    		    $link .= '&iphone=true';
	    		}
			}
		}
	    return $link;
	}
	
	function pdaPluginOption(){
    	if ( isset($_POST['submit']) ) {
            if ( function_exists('current_user_can') && !current_user_can('manage_options') ){
                die(__('Cheatin&#8217; uh?'));
            }
            update_option('pda_browser_agents', $_POST['pda_browser_agents']);
    	}
        include_once('pda-option.php');
	}

	function getBrowserAgentsToDetect(){
	    $browserAgents = get_option('pda_browser_agents');
	    if(!empty($browserAgents)){
	        $browserAgents = explode(',',$browserAgents);
	        if(!empty($browserAgents)){
	           foreach ($browserAgents as $key => $value){
	               $browserAgents[$key] = trim($value);
	           }
	           return $browserAgents;
	        }
	    }
	    return array();
	}
	
	function detectPDA($query){
		$browserAgent = $_SERVER['HTTP_USER_AGENT'];
		$userAgents = $this->getBrowserAgentsToDetect();
		foreach ( $userAgents as $userAgent ) {
			if(eregi($userAgent,$browserAgent)){
			    if(eregi("iphone",$browserAgent) || eregi("ipod",$browserAgent) ){
                    $this->iphone = true;
			    }else{
    				$this->pda = true;
			    }
			}
		}
	}	
	
	
	function get_template_directory($value){
		if($this->pda){
			return 'pda-theme';
		}elseif($this->iphone){
			return 'iphone-theme';
		}else{
			return $value;
		}
	}
	
	function theme_root($path){
		$theme_root = dirname(__FILE__);
		if($this->pda || $this->iphone){
			return $theme_root;
		}else{
			return $path;
		}
	}
	
	function get_theme_root_uri($url){
		if($this->pda || $this->iphone){
			return get_settings('siteurl') . "/wp-content/plugins/wp-pda";
		}else{
			return $url;
		}
	}
	
	function get_stylesheet($stylesheet) {
		if($this->pda){
			return 'pda-theme';
		}elseif($this->iphone){
			return 'iphone-theme';
		}else{
			return $stylesheet;
		}
	}
	
	function get_template($template) {
		if($this->pda){
			return 'pda-theme';
		}elseif($this->iphone){
			return 'iphone-theme';
		}else{
			return $template;
		}
	}

	function iPhoneGetMore(){
    	global $paged, $wp_query;
        $max_page = $wp_query->max_num_pages;
    	if ( !$paged ){
    	    $paged = 1;
    	}
    	$nextpage = intval($paged) + 1;
    	if ( (! is_single()) && (empty($paged) || $nextpage <= $max_page) ) {
    		$nextLink = get_next_posts_page_link($max_page);
    		if(strpos($nextLink,'loadmore')===false){
        		if(strpos($nextLink,'?')===false){
        		    $nextLink .= '?loadmore=true';
        		}else{
        		    $nextLink .= '&loadmore=true';
        		}
    		}
    		return $nextLink;
    	}else{
    	    return false;
    	}
	}
	
}
$wp_pda = new PDAPlugin();