1 ;;;; -*- mode: lisp -*-
 2 ;;;;
 3 ;;;; $Id: counter.lisp,v 1.2 2004/06/11 11:14:43 scaekenberghe Exp $
 4 ;;;;
 5 ;;;; A simple SSAX counter example that can be used as a performance test
 6 ;;;;
 7 ;;;; Copyright (C) 2004 Sven Van Caekenberghe, Beta Nine BVBA.
 8 ;;;;
 9 ;;;; You are granted the rights to distribute and use this software
10 ;;;; as governed by the terms of the Lisp Lesser General Public License
11 ;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
12 
13 (in-package :s-xml)
14 
15 (defclass count-xml-seed ()
16   ((elements :initform 0)
17    (attributes :initform 0)
18    (characters :initform 0)))
19 
20 (defun count-xml-new-element-hook (name attributes seed)
21   (declare (ignore name))
22   (incf (slot-value seed 'elements))
23   (incf (slot-value seed 'attributes) (length attributes))
24   seed)
25 
26 (defun count-xml-text-hook (string seed)
27   (incf (slot-value seed 'characters) (length string))
28   seed)
29   
30 (defun count-xml (in)
31   "Parse a toplevel XML element from stream in, counting elements, attributes and characters"
32   (start-parse-xml in
33 		   (make-instance 'xml-parser-state
34 				  :seed (make-instance 'count-xml-seed)
35 				  :new-element-hook #'count-xml-new-element-hook
36 				  :text-hook #'count-xml-text-hook)))
37 
38 (defun count-xml-file (pathname)
39   "Parse XMl from the file at pathname, counting elements, attributes and characters"
40   (with-open-file (in pathname)
41     (let ((result (count-xml in)))
42       (with-slots (elements attributes characters) result
43         (format t 
44                 "~a contains ~d XML elements, ~d attributes and ~d characters.~%" 
45                 pathname elements attributes characters)))))
46 
47 ;;;; eof