root/blogger-title-fix/tags/0.2/blogger-title-fix.php

<?php
/*
Plugin Name: Blogger Title Fix
Plugin URI: http://notions.okuda.ca/wordpress-plugins/blogger-title-fix/
Description: Replaces numerical titles (from Blogger import) with the first few words of the post.
Author: Poco
Version: 0.2
Author URI: http://notions.okuda.ca
*/


class ko_blogger_title_fix
{
        var $option_name = "ko_blogger_title_fix";

        function get_default_options()
        {
                $options = array(
                        "excerpt_length" => 48,
                        "cut_word" => false
                );
                
                return $options;
        }
        
        function get_options()
        {
                // If the options exists in the database then retrieve them
                if ( false !== get_option($this->option_name) )
                {
                        // Now we can get the options out of the database.
                        $options = get_option($this->option_name);
                }
                else
                {
                        // Otherwise initialize them to the defaults.
                        $options = $this->get_default_options();
                }
                
                return $options;
        }
        
        function save_options($options)
        {
                update_option($this->option_name, $options);
        }

        function fragment($str, $n, $delim='...', $word_cut=false)
        {
                $len = strlen($str);
                if ($len > $n)
                {
                        if ($word_cut)
                        {
                                // This code would limit the output to about n characters and not cut any words.
                                // This looks a bit better than the default, but this is not how Blogger reacts.
                                preg_match('/(.{' . $n . '}.*?)\b/', $str, $matches);
                                return rtrim($matches[1]) . $delim;
                        }
                        else
                        {
                                // Just take the first n characters, like Blogger does.
                                return substr(trim($str), 0, $n) . $delim;
                        }
                }
                else
                {
                        return $str;
                }
        }

        function is_bad_title($title)
        {
                // Look for a title that is only decimal digits (or empty)
                return preg_match("/^\d*$/", $title);
        }

        function filter_title($content = '', $thispost = NULL)
        {
                global $post;
                $options = $this->get_options();

                // If we didn't get a post parameter then use the global one.
                if (!isset($thispost))
                {
                        $thispost = post;
                }
                else
                {
                        // In generate $thispost will only contain the ID and Title and we need more
                        // So get it now.
                        $thispost = get_post($thispost->ID);
                }

                if ($this->is_bad_title($content))
                {
                        // Couldn't think of a better way to handle this.
                        // Stole this code from get_the_excerpt except that it uses the available $thispost
                        // instead of the global $post.
                        $output = $thispost->post_excerpt;
                        if ( !empty($thispost->post_password) ) { // if there's a password
                                if ( $_COOKIE['wp-postpass_'.COOKIEHASH] != $thispost->post_password ) {  // and it doesn't match the cookie
                                        $output = "";  // empty title
                                }
                        }

                        // If there is no excerpt then we take the content.  Again, there was no good function to call
                        // here since they all assume $post is global.
                        if ( '' == $output ) {
                                $output = $thispost->post_content;
                                $output = apply_filters('the_content', $output);
                                $output = str_replace(']]>', ']]&gt;', $output);
                                $output = strip_tags($output);
                        }


                        $newtitle = $this->fragment($output, $options["excerpt_length"], '...', $options["cut_word"]);
                        return $newtitle;
                }
                else
                {
                        return $content;
                }
        }

        function title_fix_page()
        {
                // Get the current value of the options.
                $options = $this->get_options();


                if (isset($_POST['reset_default']))
                {
                        ?><div class="updated"><p><strong><?php 
                                // Store the default options to the database
                                $options = $this->get_default_options();
                                $this->save_options($options);
                                _e('Settings Reset', 'Localization name');
                        ?></strong></p></div><?php
                }
                else if (isset($_POST['info_update']))
                {
                        ?><div class="updated"><p><strong><?php 

                        if (isset($_POST['excerpt_length']))
                        {
                                $options["excerpt_length"] = $_POST['excerpt_length'];
                        }
        
                        if (isset($_POST['cut_word']))
                        {
                                $options["cut_word"] = true;
                        }

                        // Store the new options to the database
                        $this->save_options($options);
                        
                        _e('Settings Saved', 'Localization name');
                        
                        ?></strong></p></div><?php
                }

                ?><div class=wrap>
                        <form method="post">
                                <h2>Blogger Title Fix</h2>
                                <fieldset class="options" name="set1">
                                        <legend><?php _e('Excerpt Options', 'Localization name') ?></legend>
                                        Number of characters from the post to use in the title: <input type="text" name="excerpt_length" value="<?php echo $options["excerpt_length"] ?>" ><br />
                                        Cut title at word boundary: <input type="checkbox" name="cut_word" <?php if ($options["cut_word"]) { print ('checked="checked"'); } ?> >
                                </fieldset>
                                <div class="submit">
                                        <input type="submit" name="info_update" value="<?php
                                        _e('Update options', 'Localization name')
                                        ?> �" />
                                        <input type="submit" name="reset_default" value="<?php
                                        _e('Reset to Defaults', 'Localization name')
                                        ?> �" />
                                </div>
                        </form>
                </div><?php
        }
        
        
        function add_page()
        {
                if (function_exists('add_options_page'))
                {
                        add_options_page('Blogger Title Fix', 'Blogger Title Fix', 10, basename(__FILE__), array(&$this, 'title_fix_page'));
                }
        }
}


$ko_blogger_title_fix_instance = new ko_blogger_title_fix();
add_filter('the_title', array(&$ko_blogger_title_fix_instance, 'filter_title'),10,2);
add_action('admin_menu', array(&$ko_blogger_title_fix_instance, 'add_page'));

?>