root/tags/2.1/wp-includes/comment-template.php

<?php
/*
 * Comment template functions.
 */

function get_comment_author() {
    global $comment;
    if ( empty($comment->comment_author) )
        $author = __('Anonymous');
    else
        $author = $comment->comment_author;
    return apply_filters('get_comment_author', $author);
}

function comment_author() {
    $author = apply_filters('comment_author', get_comment_author() );
    echo $author;
}

function get_comment_author_email() {
    global $comment;
    return apply_filters('get_comment_author_email', $comment->comment_author_email);
}

function comment_author_email() {
    echo apply_filters('author_email', get_comment_author_email() );
}

function comment_author_email_link($linktext='', $before='', $after='') {
    global $comment;
    $email = apply_filters('comment_email', $comment->comment_author_email);
    if ((!empty($email)) && ($email != '@')) {
    $display = ($linktext != '') ? $linktext : $email;
        echo $before;
        echo "<a href='mailto:$email'>$display</a>";
        echo $after;
    }
}

function get_comment_author_link() {
    global $comment;
    $url    = get_comment_author_url();
    $author = get_comment_author();

    if ( empty( $url ) || 'http://' == $url )
        $return = $author;
    else
        $return = "<a href='$url' rel='external nofollow'>$author</a>";
    return apply_filters('get_comment_author_link', $return);
}

function comment_author_link() {
    echo get_comment_author_link();
}

function get_comment_author_IP() {
    global $comment;
    return apply_filters('get_comment_author_IP', $comment->comment_author_IP);
}

function comment_author_IP() {
    echo get_comment_author_IP();
}

function get_comment_author_url() {
    global $comment;
    return apply_filters('get_comment_author_url', $comment->comment_author_url);
}

function comment_author_url() {
    echo apply_filters('comment_url', get_comment_author_url());
}

function get_comment_author_url_link( $linktext = '', $before = '', $after = '' ) {
    global $comment;
    $url = get_comment_author_url();
    $display = ($linktext != '') ? $linktext : $url;
    $display = str_replace( 'http://www.', '', $display );
    $display = str_replace( 'http://', '', $display );
    if ( '/' == substr($display, -1) )
        $display = substr($display, 0, -1);
    $return = "$before<a href='$url' rel='external'>$display</a>$after";
    return apply_filters('get_comment_author_url_link', $return);
}

function comment_author_url_link( $linktext = '', $before = '', $after = '' ) {
    echo get_comment_author_url_link( $linktext, $before, $after );
}

function get_comment_date( $d = '' ) {
    global $comment;
    if ( '' == $d )
        $date = mysql2date( get_option('date_format'), $comment->comment_date);
    else
        $date = mysql2date($d, $comment->comment_date);
    return apply_filters('get_comment_date', $date, $d);
}

function comment_date( $d = '' ) {
    echo get_comment_date( $d );
}

function get_comment_excerpt() {
    global $comment;
    $comment_text = strip_tags($comment->comment_content);
    $blah = explode(' ', $comment_text);
    if (count($blah) > 20) {
        $k = 20;
        $use_dotdotdot = 1;
    } else {
        $k = count($blah);
        $use_dotdotdot = 0;
    }
    $excerpt = '';
    for ($i=0; $i<$k; $i++) {
        $excerpt .= $blah[$i] . ' ';
    }
    $excerpt .= ($use_dotdotdot) ? '...' : '';
    return apply_filters('get_comment_excerpt', $excerpt);
}

function comment_excerpt() {
    echo apply_filters('comment_excerpt', get_comment_excerpt() );
}

function get_comment_ID() {
    global $comment;
    return apply_filters('get_comment_ID', $comment->comment_ID);
}

function comment_ID() {
    echo get_comment_ID();
}

function get_comment_link() {
    global $comment;
    return get_permalink( $comment->comment_post_ID ) . '#comment-' . $comment->comment_ID;
}

function get_comments_link() {
    return get_permalink() . '#comments';
}

function comments_link( $file = '', $echo = true ) {
        echo get_comments_link();
}

function get_comments_number( $post_id = 0 ) {
    global $wpdb, $id;
    $post_id = (int) $post_id;

    if ( !$post_id )
        $post_id = $id;

    $post = get_post($post_id);
    if ( ! isset($post->comment_count) )
        $count = 0;
    else
        $count = $post->comment_count;

    return apply_filters('get_comments_number', $count);
}

function comments_number( $zero = false, $one = false, $more = false, $number = '' ) {
    global $id;
    $number = get_comments_number($id);

    if ( $number > 1 )
        $output = str_replace('%', $number, ( false === $more ) ? __('% Comments') : $more);
    elseif ( $number == 0 )
        $output = ( false === $zero ) ? __('No Comments') : $zero;
    else // must be one
        $output = ( false === $one ) ? __('1 Comment') : $one;

    echo apply_filters('comments_number', $output, $number);
}

function get_comment_text() {
    global $comment;
    return apply_filters('get_comment_text', $comment->comment_content);
}

function comment_text() {
    echo apply_filters('comment_text', get_comment_text() );
}

function get_comment_time( $d = '', $gmt = false ) {
    global $comment;
    $comment_date = $gmt? $comment->comment_date_gmt : $comment->comment_date;
    if ( '' == $d )
        $date = mysql2date(get_option('time_format'), $comment_date);
    else
        $date = mysql2date($d, $comment_date);
    return apply_filters('get_comment_time', $date, $d, $gmt);
}

function comment_time( $d = '' ) {
    echo get_comment_time($d);
}

function get_comment_type() {
    global $comment;

    if ( '' == $comment->comment_type )
        $comment->comment_type = 'comment';

    return apply_filters('get_comment_type', $comment->comment_type);
}

function comment_type($commenttxt = 'Comment', $trackbacktxt = 'Trackback', $pingbacktxt = 'Pingback') {
    $type = get_comment_type();
    switch( $type ) {
        case 'trackback' :
            echo $trackbacktxt;
            break;
        case 'pingback' :
            echo $pingbacktxt;
            break;
        default :
            echo $commenttxt;
    }
}

function get_trackback_url() {
    global $id;
    $tb_url = get_option('siteurl') . '/wp-trackback.php?p=' . $id;

    if ( '' != get_option('permalink_structure') )
        $tb_url = trailingslashit(get_permalink()) . 'trackback/';

    return $tb_url;
}
function trackback_url( $display = true ) {
    if ( $display)
        echo get_trackback_url();
    else
        return get_trackback_url();
}

function trackback_rdf($timezone = 0) {
    global $id;
    if (!stristr($_SERVER['HTTP_USER_AGENT'], 'W3C_Validator')) {
    echo '<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
            xmlns:dc="http://purl.org/dc/elements/1.1/"
            xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/">
        <rdf:Description rdf:about="';
    the_permalink();
    echo '"'."\n";
    echo '    dc:identifier="';
    the_permalink();
    echo '"'."\n";
    echo '    dc:title="'.str_replace('--', '&#x2d;&#x2d;', wptexturize(strip_tags(get_the_title()))).'"'."\n";
    echo '    trackback:ping="'.trackback_url(0).'"'." />\n";
    echo '</rdf:RDF>';
    }
}

function comments_open() {
    global $post;
    if ( 'open' == $post->comment_status )
        return true;
    else
        return false;
}

function pings_open() {
    global $post;
    if ( 'open' == $post->ping_status )
        return true;
    else
        return false;
}

function comments_template( $file = '/comments.php' ) {
    global $wp_query, $withcomments, $post, $wpdb, $id, $comment, $user_login, $user_ID, $user_identity;

    if ( ! (is_single() || is_page() || $withcomments) )
        return;

    $req = get_option('require_name_email');
    $commenter = wp_get_current_commenter();
    extract($commenter);

    // TODO: Use API instead of SELECTs.
    if ( empty($comment_author) ) {
        $comments = $wpdb->get_results("SELECT * FROM $wpdb->comments WHERE comment_post_ID = '$post->ID' AND comment_approved = '1' ORDER BY comment_date");
    } else {
        $author_db = $wpdb->escape($comment_author);
        $email_db  = $wpdb->escape($comment_author_email);
        $comments = $wpdb->get_results("SELECT * FROM $wpdb->comments WHERE comment_post_ID = '$post->ID' AND ( comment_approved = '1' OR ( comment_author = '$author_db' AND comment_author_email = '$email_db' AND comment_approved = '0' ) ) ORDER BY comment_date");
    }

    $comments = apply_filters( 'comments_array', $comments, $post->ID );

    define('COMMENTS_TEMPLATE', true);
    $include = apply_filters('comments_template', TEMPLATEPATH . $file );
    if ( file_exists( $include ) )
        require( $include );
    else
        require( ABSPATH . 'wp-content/themes/default/comments.php');
}

function comments_popup_script($width=400, $height=400, $file='') {
        global $wpcommentspopupfile, $wptrackbackpopupfile, $wppingbackpopupfile, $wpcommentsjavascript;

        if (empty ($file)) {
            $wpcommentspopupfile = '';  // Use the index.
        } else {
            $wpcommentspopupfile = $file;
        }

        $wpcommentsjavascript = 1;
        $javascript = "<script type='text/javascript'>\nfunction wpopen (macagna) {\n    window.open(macagna, '_blank', 'width=$width,height=$height,scrollbars=yes,status=yes');\n}\n</script>\n";
        echo $javascript;
}

function comments_popup_link($zero='No Comments', $one='1 Comment', $more='% Comments', $CSSclass='', $none='Comments Off') {
    global $id, $wpcommentspopupfile, $wpcommentsjavascript, $post, $wpdb;

    if ( is_single() || is_page() )
        return;

    $number = get_comments_number($id);

    if ( 0 == $number && 'closed' == $post->comment_status && 'closed' == $post->ping_status ) {
        echo $none;
        return;
    }

    if ( !empty($post->post_password) ) { // if there's a password
        if ($_COOKIE['wp-postpass_'.COOKIEHASH] != $post->post_password) {  // and it doesn't match the cookie
            echo(__('Enter your password to view comments'));
            return;
        }
    }

    echo '<a href="';
    if ($wpcommentsjavascript) {
        if ( empty($wpcommentspopupfile) )
            $home = get_option('home');
        else
            $home = get_option('siteurl');
        echo $home . '/' . $wpcommentspopupfile.'?comments_popup='.$id;
        echo '" onclick="wpopen(this.href); return false"';
    } else { // if comments_popup_script() is not in the template, display simple comment link
        if ( 0 == $number )
            echo get_permalink() . '#respond';
        else
            comments_link();
        echo '"';
    }

    if (!empty($CSSclass)) {
        echo ' class="'.$CSSclass.'"';
    }
    $title = attribute_escape(apply_filters('the_title', get_the_title()));
    echo ' title="' . sprintf( __('Comment on %s'), $title ) .'">';
    comments_number($zero, $one, $more, $number);
    echo '</a>';
}

?>