- /**
- * Generate a relative path name to the given file.
- * Assumes Unix-style paths, separators, and semantics.
- *
- * @param string $path Absolute destination path including target filename
- * @param string $from Absolute source path, directory only
- * @return string
- * @access private
- * @static
- */
- function relativize( $path, $from ) {
- $pieces = explode( '/', dirname( $path ) );
- $against = explode( '/', $from );
-
- // Trim off common prefix
- while( count( $pieces ) && count( $against )
- && $pieces[0] == $against[0] ) {
- array_shift( $pieces );
- array_shift( $against );
- }
-
- // relative dots to bump us to the parent
- while( count( $against ) ) {
- array_unshift( $pieces, '..' );
- array_shift( $against );
- }
-
- array_push( $pieces, wfBaseName( $path ) );
-
- return implode( '/', $pieces );
- }
-