Changeset 3712 for trunk/wp-includes/rewrite.php

Timestamp:

04/18/2006 04:47:26 AM (20 years ago)

Author:

ryan

Message:

Move url_to_postid() to rewrite.php. #2525

File:

• trunk/wp-includes/rewrite.php (modified) (1 diff)

trunk/wp-includes/rewrite.php

@@ -57 +57 @@
     global $wp_rewrite;
     $wp_rewrite->add_endpoint($name, $places);
+}
+
+// examine a url (supposedly from this blog) and try to
+// determine the post ID it represents.
+function url_to_postid($url) {
+    global $wp_rewrite;
+
+    // First, check to see if there is a 'p=N' or 'page_id=N' to match against
+    preg_match('#[?&](p|page_id)=(\d+)#', $url, $values);
+    $id = intval($values[2]);
+    if ( $id ) return $id;
+
+    // Check to see if we are using rewrite rules
+    $rewrite = $wp_rewrite->wp_rewrite_rules();
+
+    // Not using rewrite rules, and 'p=N' and 'page_id=N' methods failed, so we're out of options
+    if ( empty($rewrite) )
+        return 0;
+
+    // $url cleanup by Mark Jaquith
+    // This fixes things like #anchors, ?query=strings, missing 'www.',
+    // added 'www.', or added 'index.php/' that will mess up our WP_Query
+    // and return a false negative
+
+    // Get rid of the #anchor
+    $url_split = explode('#', $url);
+    $url = $url_split[0];
+
+    // Get rid of URI ?query=string
+    $url_split = explode('?', $url);
+    $url = $url_split[0];
+
+    // Add 'www.' if it is absent and should be there
+    if ( false !== strpos(get_settings('home'), '://www.') && false === strpos($url, '://www.') )
+        $url = str_replace('://', '://www.', $url);
+
+    // Strip 'www.' if it is present and shouldn't be
+    if ( false === strpos(get_settings('home'), '://www.') )
+        $url = str_replace('://www.', '://', $url);
+
+    // Strip 'index.php/' if we're not using path info permalinks
+    if ( false === strpos($rewrite, 'index.php/') )
+        $url = str_replace('index.php/', '', $url);
+
+    if ( false !== strpos($url, get_settings('home')) ) {
+        // Chop off http://domain.com
+        $url = str_replace(get_settings('home'), '', $url);
+    } else {
+        // Chop off /path/to/blog
+        $home_path = parse_url(get_settings('home'));
+        $home_path = $home_path['path'];
+        $url = str_replace($home_path, '', $url);
+    }
+
+    // Trim leading and lagging slashes
+    $url = trim($url, '/');
+
+    $request = $url;
+
+    // Done with cleanup
+
+    // Look for matches.
+    $request_match = $request;
+    foreach ($rewrite as $match => $query) {
+        // If the requesting file is the anchor of the match, prepend it
+        // to the path info.
+        if ( (! empty($url)) && (strpos($match, $url) === 0) ) {
+            $request_match = $url . '/' . $request;
+        }
+
+        if ( preg_match("!^$match!", $request_match, $matches) ) {
+            // Got a match.
+            // Trim the query of everything up to the '?'.
+            $query = preg_replace("!^.+\?!", '', $query);
+
+            // Substitute the substring matches into the query.
+            eval("\$query = \"$query\";");
+            $query = new WP_Query($query);
+            if ( $query->is_single || $query->is_page )
+                return $query->post->ID;
+            else
+                return 0;
+        }
+    }
+    return 0;
 }