root/answerlinks/trunk/answerlink.php

<?php

// Released under the GPL license
// http://www.opensource.org/licenses/gpl-license.php
// 
// By using this Wordpress Plug-in you acknowledge that you are not  
// being granted and are not acquiring any rights whatsoever in the  
// Service. Any use of the Service by you will be subject to and  
// governed by Answers' Corporation's Terms of Use which can be found  
// here: http://www.answers.com/main/legal_notices.jsp#terms
// 
// Answers.com provides users with access to a rich collection of  
// resources, including but not limited to, dictionaries,  
// encyclopedias, atlases, glossaries, thesauri and other reference  
// works (the "Answers.com Service") and certain software that may be  
// used in connection with the Answers.com Service, including, but not  
// limited to, 1-Click AnswersTM and AnswerTipsTM (the "Software") and  
// WikiAnswersTM, a community-based question-and-answer service using  
// the "wiki" approach of developing answers that the community  
// constantly improves (the "WikiAnswers.com Service," collectively  
// with the Answers.com Service, the WikiAnswers Service, the Sites,  
// and the Software, the "Service")
//
// This is an add-on for WordPress
// http://wordpress.org/
//
// **********************************************************************
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
// *****************************************************************

/*
Plugin Name: AnswerLinks
Description: Link to definitions and more on Answers.com from your posts.
Version: 1.1
Author: Answers.com and Crowd Favorite
Author URI: http://crowdfavorite.com
*/

global $wp_version;
if (isset($wp_version) && version_compare($wp_version, '2.5', '>=')) {
    define('AKV_25', true);
    define('AKV_25s', 'true');
}
else {
    define('AKV_25', false);
    define('AKV_25s', 'false');
}

if (!function_exists('is_admin_page')) {
    function is_admin_page() {
        if (function_exists('is_admin')) {
            return is_admin();
        }
        if (function_exists('check_admin_referer')) {
            return true;
        }
        else {
            return false;
        }
    }
}

if (is_admin_page() && !AKV_25) {
    wp_enqueue_script('jquery');
}

if (!function_exists('wp_prototype_before_jquery')) {
    function wp_prototype_before_jquery( $js_array ) {
        if ( false === $jquery = array_search( 'jquery', $js_array ) )
            return $js_array;
    
        if ( false === $prototype = array_search( 'prototype', $js_array ) )
            return $js_array;
    
        if ( $prototype < $jquery )
            return $js_array;
    
        unset($js_array[$prototype]);
    
        array_splice( $js_array, $jquery, 0, 'prototype' );
    
        return $js_array;
    }
    
    add_filter( 'print_scripts_array', 'wp_prototype_before_jquery' );
}

function cf_answerlink_header() {
    print('
<script type="text/javascript">

// var jQuery = jQuery.noConflict();
var akv_25 = '.AKV_25s.';

function al_show() {
    try {
        if (typeof document.body.style.maxHeight === "undefined") {//if IE 6
            jQuery("body","html").css({height: "100%", width: "100%"});
            jQuery("html").css("overflow","hidden");
            if (document.getElementById("TB_HideSelect") === null) {//iframe to hide select elements in ie6
                jQuery("body").append("<iframe id=\'TB_HideSelect\'></iframe><div id=\'TB_overlay\'></div><div id=\'TB_window\'></div>");
                jQuery("#TB_overlay").click(al_remove);
            }
        }else{//all others
            if(document.getElementById("TB_overlay") === null){
                jQuery("body").append(\'<div id="TB_overlay"></div><div id="TB_window"></div>\');
                jQuery("#TB_overlay").click(al_remove);
            }
        }
        
        TB_WIDTH = 700;
        TB_HEIGHT = 500;
        ajaxContentW = TB_WIDTH;
        ajaxContentH = TB_HEIGHT;
        
        al_position();
        if(frames[\'TB_iframeContent\'] === undefined){//be nice to safari
            jQuery("#TB_load").remove();
            jQuery("#TB_window").css({display:"block"});
            jQuery(document).keyup( function(e){ var key = e.keyCode; if(key == 27){al_remove();}});
        }
    
    } catch(e) {
        //nothing here
    }
}

//helper functions below
function al_remove() {
     jQuery("#TB_imageOff").unbind("click");
    jQuery("#TB_overlay").unbind("click");
    jQuery("#TB_closeWindowButton").unbind("click");
    jQuery("#TB_window").fadeOut("fast",function(){jQuery(\'#TB_window,#TB_overlay,#TB_HideSelect\').remove();});
    jQuery("#TB_load").remove();
    if (typeof document.body.style.maxHeight == "undefined") {//if IE 6
        jQuery("body","html").css({height: "auto", width: "auto"});
        jQuery("html").css("overflow","");
    }
    document.onkeydown = "";
    return false;
}

function al_position() {
    jQuery("#TB_window").css({marginLeft: \'-\' + parseInt((TB_WIDTH / 2),10) + \'px\', width: 700 + \'px\'});
    if ( !(jQuery.browser.msie && typeof XMLHttpRequest == \'function\')) { // take away IE6
        jQuery("#TB_window").css({marginTop: \'-\' + parseInt((500 / 2),10) + \'px\'});
    }
}

function requestAnswerLinkWindow() {
    if (document.getElementById("TB_window")) {
        return;
    }
    al_show();
    al_position();
    if (typeof tinyMCE != "undefined") {
        if (akv_25) {
            tinyMCE.triggerSave(false, false);
        }
        else {
            var inst = tinyMCE.getInstanceById("content");
            if (inst) {
                inst.triggerSave(false, false);
            }
        }
    }
    jQuery("#TB_window").css({background: "#033c66"}).append(\'<iframe name="TB_iframeContent" id="TB_iframeContent" src="'.get_bloginfo('wpurl').'/index.php?cf_action=answerlink-init" border="0" frameborder="0" style="height: 500px; width: 700px; border: 0;"></iframe>\');
    return false;
}

function addAnswerLinkTMCEButton() {
    if (!akv_25 && document.getElementById("mce_editor_0_wp_help")) {
        jQuery("#mce_editor_0_wp_help").after("<img src=\"'.get_bloginfo('wpurl').'/wp-includes/js/tinymce/themes/advanced/images/separator.gif\" class=\"mceSeparatorLine\" height=\"20\" width=\"2\" title=\"Get Suggested links from Answers.com\"><a id=\"mce_editor_0_answerlink\" href=\"'.get_bloginfo('wpurl').'/index.php\"class=\"mceButtonNormal thickbox\" target=\"_self\"><img src=\"'.get_bloginfo('wpurl').'/wp-content/plugins/answerlinks/images/mce_button.gif\" title=\"AnswerLinks\"></a>");
        jQuery("#mce_editor_0_answerlink").bind("click", requestAnswerLinkWindow);
    }
    else if (akv_25 && jQuery("#content_wp_adv").size()) {
        jQuery("#content_wp_adv").parent().before("<td><a title=\"AnswerLinks\" onclick=\"return false;\" onmousedown=\"return false;\" class=\"mceButton mceButtonEnabled\" href=\"javascript:;\" id=\"mce_editor_0_answerlink\"><img src=\"'.get_bloginfo('wpurl').'/wp-content/plugins/answerlinks/images/mce_button.gif\" class=\"mceIcon\"/></a></td>");
        jQuery("#mce_editor_0_answerlink").bind("click", requestAnswerLinkWindow);
    }
    else {
        setTimeout("addAnswerLinkTMCEButton();", 300);
    }
}

jQuery(window).load(function() {
    if (!jQuery.browser.opera) {
        if (document.getElementById("postdivrich")) {
            addAnswerLinkTMCEButton();
        }
        else {
            jQuery("#ed_close").after("<input id=\"ed_answerlink\" class=\"ed_button\" title=\"Get Suggested links from Answers.com\" value=\"AnswerLinks\" type=\"button\" />");
            jQuery("#ed_answerlink").bind("click", requestAnswerLinkWindow);
        }
    }
});

</script>
<link type="text/css" rel="stylesheet" href="'.get_bloginfo('wpurl').'/wp-content/plugins/answerlinks/thickbox.css" />
<style type="text/css">
#TB_window {
    height: 500px;
    width: 700px;
}
#TB_iframeContent {
    margin-top: 0;
}
</style>
    ');
}
add_action('admin_head', 'cf_answerlink_header');

function cf_answerlink_request_handler() {
    if (!empty($_REQUEST['cf_action'])) {
        switch ($_REQUEST['cf_action']) {
            case 'answerlink-init':
                print('
                <html><body style="overflow: hidden;">
                <div style="background: url('.get_bloginfo('wpurl').'/wp-content/plugins/answerlinks/images/loading.gif) center center no-repeat; height: 500px; width: 700px;">
                </div>
                <form name="answerlink" id="answerlink" action="'.get_bloginfo('wpurl').'/index.php?nocache='.microtime().'" method="post">
                    <input type="hidden" name="content" id="al_iframe_content" value="" />
                    <input type="hidden" name="cf_action" value="answerlink-window" />
                    <input type="submit" />
                </form>
                <script type="text/javascript">
                document.getElementById("al_iframe_content").value = parent.document.getElementById("content").value;
                function submitForm() {
                    document.answerlink.submit();
                }
                window.onload = submitForm;
                </script>
                </body></html>
                ');
                die();
                break;
            case 'answerlink-window':
                require_once(ABSPATH.WPINC.'/class-snoopy.php');
                $snoop = new Snoopy;
                $snoop->read_timeout = 5;
                $snoop->submit(
                    'http://alink.answers.com/link/xml'
                    , array(
                        'text' => stripslashes($_POST['content'])
                    )
                );
                $parser = new XMLParser;
                $parser->parse($snoop->results);
                $data = $parser->document['TEXT'][0];
                $content = $data['CONTENT'][0]['data'];
                $links = array();
                if (is_array($data['LINKS'][0]['LINK'])) {
                    foreach ($data['LINKS'][0]['LINK'] as $link) {
                        $links[$link['ID'][0]['data']] = array(
                            'id' => $link['ID'][0]['data']
                            , 'url' => $link['URL'][0]['data']
                            , 'phrase' => $link['PHRASE'][0]['data']
                        );
                    }
                }
                @header('Content-type: ' . get_option('html_type') . '; charset=' . get_option('blog_charset'));
                cf_answerlink_head_html(true);
                cf_answerlink_form($content, $links);
                cf_answerlink_foot_html();
                die();
                break;
        }
    }
}
add_action('init', 'cf_answerlink_request_handler', 9999);    

function cf_answerlink_head_html($meta = false) {

if (strpos($_SERVER['HTTP_HOST'], 'wordpress.com') !== false) {
    $header_img = 'header.gif';
}
else {
    $header_img = 'header-org.gif';
}

print('
<html>
    <head>
    <style type="text/css">
body {
    color: #000;
    font-size: 12px;
    margin: 0;
    padding: 0;
    overflow: hidden;
}

#answerlinkform {
    overflow: hidden;
}
#al_header {
    background: url('.get_bloginfo('wpurl').'/wp-content/plugins/answerlinks/images/'.$header_img.') no-repeat;
    height: 61px;
    margin: 0;
    padding: 0;
}
#al_header span {
    display: none;
}
#al_content {
    background: url('.get_bloginfo('wpurl').'/wp-content/plugins/answerlinks/images/body.gif) no-repeat;
    height: 381px;
    padding: 0 15px;
    overflow: hidden;
}
#answerlinkform div.clear {
    clear: both;
    float: none;
}
#answerlinkform #answerlink_left {
    float: left;
    margin: 10px 10px 0 0;
    overflow: hidden;
    width: 450px;
}
#answerlinkform .content {
    background: #fff; 
    border: 1px solid #ccc;
    height: 260px; 
    line-height: 140%;
    margin: 0 0 10px 0;
    overflow: auto;
    padding: 7px; 
}
#answerlinkform .content a {
    color: #000;
    border-color: #000;
}
#answerlinkform .content span {
    background: #ffc;
    padding: 2px;
}
#answerlinkform .content span.active {
    background: #d9ecf5;
    border: 2px solid #95c4dc;
    padding: 2px;
}
#answerlinkform .content span.linked {
    background: #e6f8d5;
    border: 1px solid #a1dc69;
    padding: 2px;
}
#answerlinkform .content span.unlinked {
    background: #eee;
    border: 1px solid #999;
    padding: 2px;
}
#answerlinkform .content span a {
    color: blue;
    border-color: blue;
}
#answerlinkform #answerlink_links {
    float: left;
    height: 360px;
    margin-top: 10px;
    overflow: auto;
    width: 190px;
}
#answerlinkform #answerlink_links h2 {
    background: #fff;
    border: 0;
    color: #777;
    font: bold 14px Verdana Arial, Helvetica, sans-serif;
    margin: 0;
    padding: 0 0 5px 0;
}
#answerlinkform #answerlink_links ul {
    border-top: 1px solid #ccc;
    list-style: none;
}
#answerlinkform #answerlink_links ul li {
    border-bottom: 1px solid #ccc;
    padding: 5px;
}
#answerlinkform #answerlink_links ul li input {
    margin-right: 5px;
}
#al_current_phrase_wrap label {
    color: #777;
    display: block;
    float: left;
    font-size: 12px;
    font-weight: bold;
    width: 100px;
}
#al_current_phrase_wrap span.block {
    float: left;
    width: 350px;
}
#al_current_phrase_wrap span.block a {
    border: 0;
    color: blue;
    text-decoration: underline;
}
#al_current_phrase_wrap span.block span.right {
    color: #777;
    float: right;
}
#al_current_phrase {
    display: block;
    font-size: 13px;
    font-weight: bold;
}
#al_wizard {
    margin: 10px 0 0 100px;
}
#al_wizard a, #al_wizard a img {
    border: 0;
}
#answerlinkform #al_wizard_complete {
    background: #ffc;
    display: none;
    font-weight: bold;
    margin: 5px 0 0 100px;
    padding: 10px;
}
#al_footer {
    background: url('.get_bloginfo('wpurl').'/wp-content/plugins/answerlinks/images/footer.gif) no-repeat;
    height: 58px;
    margin: 0;
    padding: 0;
    position: relative;
    text-align: center;
}
#al_footer input, #answerlink_button {
    background:transparent url(images/fade-butt.png) repeat scroll 0%;
    border-color:#CCCCCC rgb(153, 153, 153) rgb(153, 153, 153) rgb(204, 204, 204);
    border-style:double;
    border-width:3px;
    color:#333333;
    padding:0.25em;
    margin-top: 10px;
}
#al_footer a.about {
    top: 15px;
    position: absolute;
    right: 15px;
}
#al_footer a.contact {
    bottom: 15px;
    position: absolute;
    right: 15px;
}
    </style>
    <script type="text/javascript" src="'.get_bloginfo('wpurl').'/wp-includes/js/jquery/jquery.js?ver=1.1.2"></script>
    <script type="text/javascript">
var answerlink = {
    links : new Array()
    , gte25 : '.AKV_25s.'
}

answerlink.link = {
    id : ""
    , url : ""
    , phrase : ""
    , linked : false
}

answerlink.enableLink = function(id) {
    var linkData = answerlink.getLink(id);
    var phrase = linkData[1];
    var url = linkData[2];
    jQuery("#" + id).html("<a href=\"" + url + "\" class=\"answerlink\">" + phrase + "</a>").removeClass("unlinked").addClass("linked");
    jQuery("#alcb_" + id).attr("checked", "checked");
}

answerlink.disableLink = function(id) {
    var linkData = answerlink.getLink(id);
    var phrase = linkData[1];
    jQuery("#" + id).html(phrase).removeClass("linked").addClass("unlinked");
    jQuery("#alcb_" + id).removeAttr("checked");
}

answerlink.toggleLink = function(checkbox_id) {
    id = checkbox_id.replace("alcb_", "");
    document.getElementById("answerlink_content").scrollTop = document.getElementById(id).offsetTop - 80;
    answerlink.setActiveLink(id);
    if (jQuery("#" + checkbox_id).attr("checked")) {
        answerlink.enableLink(id);
    }
    else {
        answerlink.disableLink(id);
    }
}

answerlink.applyLinks = function() {
    jQuery("#answerlink_content span").each(function() {
        if (jQuery(this).attr("id") && jQuery(this).attr("id").indexOf("alnk") != -1) {
            jQuery(this).before(this.innerHTML);
            jQuery(this).remove();
        }
    });
    var content = jQuery("#answerlink_content").html();
    parent.jQuery("#content").val(content);
    if (typeof parent.tinyMCE != "undefined") {
        if (answerlink.gte25) {
            parent.tinyMCE.activeEditor.setContent(content);
        }
        else {
            var inst = parent.tinyMCE.getInstanceById("content");
            if (inst) {
                parent.tinyMCE.setContent(content);
                inst.repaint();
            }
        }
    }
    parent.al_remove();
}

answerlink.getLink = function(id) {
    for (var i = 0; i < answerlink.links.length; i++) {
        var link = answerlink.links[i];
        if (id == link[0]) {
            return [id, link[1], link[2]];
        }
    }
}

answerlink.setLink = function(action) {
    var match = false;
    for (var i = 0; i < answerlink.links.length; i++) {
        var link = answerlink.links[i];
        if (answerlink.activeLink == link[0]) {
            match = true;
            var url = link[2];
            var next = false;
            if (i + 1 < answerlink.links.length) {
                var next = answerlink.links[i + 1][0];
                var count = i + 2;
            }
            break;
        }
    }
    if (!match) {
        return;
    }
    switch (action) {
        case "enable":
            answerlink.enableLink(answerlink.activeLink);
            break;
        case "disable":
            answerlink.disableLink(answerlink.activeLink);
            break;
    }
    if (next) {
        answerlink.setActiveLink(next);
        document.getElementById("answerlink_content").scrollTop = document.getElementById(next).offsetTop - 80;
    }
    else {
        jQuery("#al_wizard").slideUp("normal", answerlink.finishedLinking);
    }
}

answerlink.setActiveLink = function(id) {
    jQuery("#answerlinkform .content span.active").removeClass("active");
    answerlink.activeLink = id;
    jQuery("#" + id).addClass("active");
    for (var i = 0; i < answerlink.links.length; i++) {
        if (id == answerlink.links[i]) {
            var count = i + 2;
            break;
        }
    }
    jQuery("#al_count").html(count);
    var linkData = answerlink.getLink(id);
    jQuery("#al_current_phrase").html(linkData[1]);
    jQuery("#al_current_link").html(linkData[2]).attr("href", linkData[2]);
}

answerlink.finishedLinking = function() {
    jQuery("#al_wizard_complete").slideDown();
}

answerlink.cancel = function() {
    parent.al_remove();
}
        </script>
    ');
    if ($meta) {
?>
    <meta http-equiv="Content-Type" content="<?php bloginfo('html_type'); ?>; charset=<?php echo get_option('blog_charset'); ?>" />
<?php
    }
    cf_answerlink_header();
    print('
        </head>
        <body>
    ');
}

function cf_answerlink_foot_html() {
    print('
        </body>
    </html>
    ');
}

function cf_answerlink_nolinks() {
    print('
<div id="answerlinkform">
    <h3 id="al_header"><span>AnswerLinks powered by <a href="http://www.answers.com" onclick="window.open(this.href); return false;">Answers.com</a></h3>
    
    <div id="al_content">
        <p style="font-size: 14px; color: #666; padding: 50px 100px; text-align: center;">Sorry, we do not have any AnswerLinks to suggest at this time.</p>
    </div>
    <p id="al_footer">
        <input type="button" name="cancel" value="&nbsp;OK&nbsp;" onclick="answerlink.cancel();" />
        <a href="http://www.answers.com/main/wordpress_howto.jsp" onclick="window.open(this.href); return false;" class="about">About This Feature</a>
        <a href="http://www.answers.com/main/contact_us.jsp" onclick="window.open(this.href); return false;" class="contact">Contact Answers.com</a>
    </p>
</div>
    ');
}

function cf_answerlink_form($content = '', $links = array()) {
    if (count($links) == 0) {
        cf_answerlink_nolinks();
        return;
    }
    print('
<div id="answerlinkform">
    <h3 id="al_header"><span>AnswerLinks powered by <a href="http://www.answers.com" onclick="window.open(this.href); return false;">Answers.com</a></h3>
    
    <div id="al_content">
    ');
    $content = apply_filters('the_content', $content);
    $link_js = array();
    $i = 0;
    foreach ($links as $link) {
        if ($i == 0) {
            $first_link = $link;
            $i++;
        }
        $link_js[] = '["'.$link['id'].'", "'.$link['phrase'].'", "'.$link['url'].'"]';
    }
    $link_js = '
answerlink.links = ['.implode(',', $link_js).'];
    ';
    $js = str_replace('"', '\"', 'answerlink.activeLink = "'.$first_link['id'].'"; '.str_replace("\n", ' ', $link_js).' jQuery("#" + answerlink.activeLink).addClass("active");');
    
    print('

        <script type="text/javascript">
        
        answerlink.activeLink = "'.$first_link['id'].'"; '.str_replace("\n", ' ', $link_js).'
        
        </script>

        <div id="answerlink_left">

            <div class="content" id="answerlink_content">'.$content.'</div>
            
            <div class="clear"></div>
            
            <p id="al_current_phrase_wrap">
                <label for="al_current_phrase">Suggested link:</label> 
                <span class="block">
                    <span class="right"><span id="al_count">1</span> of '.count($links).'</span>
                    <span id="al_current_phrase">'.htmlspecialchars($first_link['phrase']).'</span>
                    <a id="al_current_link" href="'.$first_link['url'].'" target="_blank">'.$first_link['url'].'</a>
                </span>
            </p>
    
            <div class="clear"></div>
            
            <p id="al_wizard">
                <a href="#" onclick="answerlink.setLink(\'enable\'); return false;"><img src="'.get_bloginfo('wpurl').'/wp-content/plugins/answerlinks/images/button_link.gif" alt="Link" /></a>
                <a href="#" onclick="answerlink.setLink(\'disable\'); return false;"><img src="'.get_bloginfo('wpurl').'/wp-content/plugins/answerlinks/images/button_dontlink.gif" alt="Don\'t Link" /></a>
            </p>
        
            <p id="al_wizard_complete">
                You\'re all done! Click OK below.
            </p>
    
        </div>
        
        <div id="answerlink_links">
            <h2>Suggestions</h2>
            <ul>
            ');
            foreach ($links as $k => $v) {
                print('
                <li>
                    <input type="checkbox" name="answerlink_links" id="alcb_'.$v['id'].'" onclick="answerlink.toggleLink(this.id);" />
                    <label for="alcb_'.$v['id'].'" onclick="answerlink.toggleLink(this.getAttribute(\'for\'));">'.htmlspecialchars($v['phrase']).'</label>
                ');
            }
            print('
            </ul>
        </div>
    
    </div>
    
    <p id="al_footer">
        <input type="button" name="ok" value="&nbsp;OK&nbsp;" onclick="answerlink.applyLinks();" />
        <input type="button" name="cancel" value="Cancel" onclick="answerlink.cancel();" />
        <a href="http://www.answers.com/main/wordpress_howto.jsp" onclick="window.open(this.href); return false;" class="about">About This Feature</a>
        <a href="http://www.answers.com/main/contact_us.jsp" onclick="window.open(this.href); return false;" class="contact">Contact Answers.com</a>
    </p>

</div>

    ');
}


class XMLParser
{
    var $parser;
    var $filePath;
    var $document;
    var $currTag;
    var $tagStack;
   
    function XMLParser($path = '')
    {
    $this->parser = xml_parser_create();
    $this->filePath = $path;
    $this->document = array();
    $this->currTag =& $this->document;
    $this->tagStack = array();
    }
   
    function parse($data)