[wp-cvs] wordpress/wp-includes template-functions-links.php, 1.30, 1.31

[Ryan Boren]

Update of /cvsroot/cafelog/wordpress/wp-includes
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv27583/wp-includes

Modified Files:
	template-functions-links.php 
Log Message:
Add previous_post_link() and next_post_link().

Index: template-functions-links.php
===================================================================
RCS file: /cvsroot/cafelog/wordpress/wp-includes/template-functions-links.php,v
retrieving revision 1.30
retrieving revision 1.31
diff -C2 -d -r1.30 -r1.31
*** template-functions-links.php	23 Aug 2004 23:28:14 -0000	1.30
--- template-functions-links.php	24 Aug 2004 01:35:57 -0000	1.31
***************
*** 243,246 ****
--- 243,342 ----
  // Navigation links
  
+ function get_previous_post($in_same_cat = false, $excluded_categories = '') {
+     global $post, $wpdb;
+ 
+     if(! is_single()) {
+       return null;
+     }
+     
+     $current_post_date = $post->post_date;
+     $current_category = $post->post_category;
+     
+     $sqlcat = '';
+     if ($in_same_cat) {
+       $sqlcat = " AND post_category = '$current_category' ";
+     }
+ 
+     $sql_exclude_cats = '';
+     if (!empty($excluded_categories)) {
+       $blah = explode('and', $excluded_categories);
+       foreach($blah as $category) {
+ 	$category = intval($category);
+ 	$sql_exclude_cats .= " AND post_category != $category";
+       }
+     }
+ 
+     return @$wpdb->get_row("SELECT ID, post_title FROM $wpdb->posts WHERE post_date < '$current_post_date' AND post_status = 'publish' $sqlcat $sql_exclude_cats ORDER BY post_date DESC LIMIT 1");
+ }
+ 
+ function get_next_post($in_same_cat = false, $excluded_categories = '') {
+     global $post, $wpdb;
+ 
+     if(! is_single()) {
+       return null;
+     }
+ 
+     $current_post_date = $post->post_date;
+     $current_category = $post->post_category;
+     
+     $sqlcat = '';
+     if ($in_same_cat) {
+       $sqlcat = " AND post_category = '$current_category' ";
+     }
+ 
+     $sql_exclude_cats = '';
+     if (!empty($excluded_categories)) {
+       $blah = explode('and', $excluded_categories);
+       foreach($blah as $category) {
+ 	$category = intval($category);
+ 	$sql_exclude_cats .= " AND post_category != $category";
+       }
+     }
+ 
+     $now = current_time('mysql');
+     
+     return @$wpdb->get_row("SELECT ID,post_title FROM $wpdb->posts WHERE post_date > '$current_post_date' AND post_date < '$now' AND post_status = 'publish' $sqlcat $sql_exclude_cats AND ID != $post->ID ORDER BY post_date ASC LIMIT 1");
+ }
+ 
+ function previous_post_link($format='&laquo; %link', $link='%title', $in_same_cat = false, $excluded_categories = '') {
+   $post = get_previous_post($in_same_cat, $excluded_categories);
+ 
+   if(! $post) {
+     return;
+   }
+ 
+   $title = apply_filters('the_title', $post->post_title);
+ 
+   $string = '<a href="'.get_permalink($post->ID).'">';
+ 
+   $link = str_replace('%title', $title, $link);
+ 
+   $link = $string . $link . '</a>';
+ 
+   $format = str_replace('%link', $link, $format);
+ 
+   echo $format;	    
+ }
+ 
+ function next_post_link($format='%link &raquo;', $link='%title', $in_same_cat = false, $excluded_categories = '') {
+   $post = get_next_post($in_same_cat, $excluded_categories);
+ 
+   if(! $post) {
+     return;
+   }
+ 
+   $title = apply_filters('the_title', $post->post_title);
+ 
+   $string = '<a href="'.get_permalink($post->ID).'">';
+ 
+   $link = str_replace('%title', $title, $link);
+ 
+   $link = $string . $link . '</a>';
+ 
+   $format = str_replace('%link', $link, $format);
+ 
+   echo $format;	    
+ }
+ 
  function previous_post($format='%', $previous='previous post: ', $title='yes', $in_same_cat='no', $limitprev=1, $excluded_categories='') {
      global $id, $post, $wpdb;