Changeset 4989 for trunk/bp-core/bp-core-wpabstraction.php

Timestamp:

08/16/2011 11:33:09 AM (15 years ago)

Author:

boonebgorges

Message:

Modifies bp_create_excerpt() to take account of HTML tag length when truncating long texts. Thanks to CakePHP for the function. Refactors BP use of bp_create_excerpt(), where necessary, to account for new function argument structure. Reworks bp_activity_truncate_entry() so that already-truncated activity items (like blog posts) do not get a Read More link when they contain HTML. Introduces fallback functions for some multibyte string functions, to make bp_create_excerpt() work properly. Thanks to MediaWiki for these fallbacks. Fixes #3452. Props DJPaul for all the help with this patch.

File:

• trunk/bp-core/bp-core-wpabstraction.php (modified) (2 diffs)

trunk/bp-core/bp-core-wpabstraction.php

@@ -27 +27 @@
         }
     }
-    
+
     if ( !function_exists( 'update_blog_option' ) ) {
         function update_blog_option( $blog_id, $option_name, $value ) {
@@ -74 +74 @@
         return "{$prefix}spam = 0 AND {$prefix}deleted = 0 AND {$prefix}user_status = 0";
 }
+
+/**
+ * Multibyte encoding fallback functions
+ *
+ * The PHP multibyte encoding extension is not enabled by default. In cases where it is not enabled,
+ * these functions provide a fallback.
+ *
+ * Borrowed from MediaWiki, under the GPLv2. Thanks!
+ */
+if ( !function_exists( 'mb_strlen' ) ) {
+    /**
+     * Fallback implementation of mb_strlen, hardcoded to UTF-8.
+     * @param string $str
+     * @param string $enc optional encoding; ignored
+     * @return int
+     */
+    function mb_strlen( $str, $enc = '' ) {
+        $counts = count_chars( $str );
+        $total = 0;
+
+        // Count ASCII bytes
+        for( $i = 0; $i < 0x80; $i++ ) {
+            $total += $counts[$i];
+        }
+
+        // Count multibyte sequence heads
+        for( $i = 0xc0; $i < 0xff; $i++ ) {
+            $total += $counts[$i];
+        }
+        return $total;
+    }
+}
+
+if ( !function_exists( 'mb_strpos' ) ) {
+    /**
+     * Fallback implementation of mb_strpos, hardcoded to UTF-8.
+     * @param $haystack String
+     * @param $needle String
+     * @param $offset String: optional start position
+     * @param $encoding String: optional encoding; ignored
+     * @return int
+     */
+    function mb_strpos( $haystack, $needle, $offset = 0, $encoding = '' ) {
+        $needle = preg_quote( $needle, '/' );
+
+        $ar = array();
+        preg_match( '/' . $needle . '/u', $haystack, $ar, PREG_OFFSET_CAPTURE, $offset );
+
+        if( isset( $ar[0][1] ) ) {
+            return $ar[0][1];
+        } else {
+            return false;
+        }
+    }
+}
+
+if ( !function_exists( 'mb_strrpos' ) ) {
+    /**
+     * Fallback implementation of mb_strrpos, hardcoded to UTF-8.
+     * @param $haystack String
+     * @param $needle String
+     * @param $offset String: optional start position
+     * @param $encoding String: optional encoding; ignored
+     * @return int
+     */
+    function mb_strrpos( $haystack, $needle, $offset = 0, $encoding = '' ) {
+        $needle = preg_quote( $needle, '/' );
+
+        $ar = array();
+        preg_match_all( '/' . $needle . '/u', $haystack, $ar, PREG_OFFSET_CAPTURE, $offset );
+
+        if( isset( $ar[0] ) && count( $ar[0] ) > 0 &&
+            isset( $ar[0][count( $ar[0] ) - 1][1] ) ) {
+            return $ar[0][count( $ar[0] ) - 1][1];
+        } else {
+            return false;
+        }
+    }
+}
+
 ?>