1 ;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
2 ;;;; *************************************************************************
3 ;;;; FILE IDENTIFICATION
6 ;;;; Purpose: Lisp Markup Language functions
7 ;;;; Programmer: Kevin M. Rosenberg
8 ;;;; Date Started: Aug 2002
10 ;;;; $Id: base.lisp,v 1.2 2003/01/04 13:26:14 kevin Exp $
12 ;;;; This file, part of LML, is Copyright (c) 2002 by Kevin M. Rosenberg
14 ;;;; LML users are granted the rights to distribute and use this software
15 ;;;; as governed by the terms of the GNU General Public License v2
16 ;;;; (http://www.gnu.org/licenses/gpl.html)
17 ;;;; *************************************************************************
19 (declaim (optimize (debug 3) (speed 3) (safety 3) (compilation-speed 0)))
22 (defun html4-prologue-string ()
23 "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML//EN\">")
25 (defun xml-prologue-string ()
26 "<?xml version=\"1.0\" encoding=\"iso-8859-1\" standalone=\"yes\"?>")
28 (defun xhtml-prologue-string ()
29 "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">")
31 (defvar *print-spaces* nil)
33 (defun reset-indent ()
36 (defun lml-print (str &rest args)
37 (when (streamp *html-output*)
38 (when *print-spaces* (indent-spaces *indent* *html-output*))
40 (apply #'format *html-output* str args)
41 (princ str *html-output*))
42 (when *print-spaces* (format *html-output* "~%"))
45 (defmacro lml-line (str &rest args)
46 `(lml-print ,str ,@args))
48 (defun lml-print-date (date)
49 (lml-print (date-string date)))
51 (defmacro lml-exec-body (&body forms)
59 `(lml-print "~D" ,form))
67 (defmacro with-attr-string (tag attr-string &body body)
68 (let ((attr (gensym)))
69 `(let ((,attr ,attr-string))
70 (lml-print "<~(~A~)~A>" ',tag
71 (if (and (stringp ,attr) (plusp (length ,attr)))
72 (format nil "~A" ,attr)
75 (lml-exec-body ,@body)
77 (lml-print "</~(~A~)>" ',tag))))
79 (defun one-keyarg-string (key value)
80 "Return attribute string for keys"
81 (format nil "~(~A~)=\"~A\"" key
84 (string-downcase (symbol-name value)))
90 (defmacro with-keyargs (tag keyargs &body body)
95 (dolist (,kv ,keyargs)
97 (push (one-keyarg-string (car ,kv) it) ,attr)))
98 (with-attr-string ,tag (list-to-spaced-string (nreverse ,attr)) ,@body)))))
100 (defmacro bind-one-keyarg (keyarg)
101 `(list ,(car keyarg) ,(cdr keyarg)))
103 (defmacro bind-all-keyargs (keyargs)
104 "Convert a list of keyarg pairs and convert eval/bind arguments"
105 (let* ((npairs (length keyargs))
106 (syms (make-array npairs))
109 (declare (dynamic-extent syms))
111 (setf (aref syms i) (gensym)))
112 `(let ,(mapcar #'(lambda (ka)
114 (list (aref syms ipair) (cdr ka))
117 (list ,@(mapcar #'(lambda (ka)
119 `(cons ,(car ka) ,(aref syms ipair2))
123 (defmacro with (tag &rest args)
124 "Return a list of keyargs and also the body of LML form"
127 (bound-keyargs (gensym)))
128 (do* ((n (length args))
130 (arg (nth i args) (nth i args))
131 (value (when (< (1+ i) n)
135 ((or (not (keyword-symbol? arg))
138 (push (nth (+ i j) args) body)))
139 (push (cons arg value) keyargs))
140 (setq keyargs (nreverse keyargs))
141 (setq body (nreverse body))
142 `(let ((,bound-keyargs ,(macroexpand `(bind-all-keyargs ,keyargs))))
143 ,(macroexpand `(with-keyargs ,tag ,bound-keyargs ,@body)))))
146 (defmacro keyargs-string (&rest args)
147 "Returns a string of attributes and values. Result contains a leading space."
148 (let ((keyarg-list '()))
149 (loop for ( name val ) on args by #'cddr
152 (push (one-keyarg-string name val) keyarg-list)))
153 (list-to-spaced-string (nreverse keyarg-list))))
156 (defmacro xhtml-prologue ()
158 (lml-print "~A~%" (xml-prologue-string))
159 (lml-print "~A~%" (xhtml-prologue-string))))
161 (defmacro link (dest &body body)
162 `(with a :href ,dest ,@body))
164 (defmacro link-c (class dest &body body)
165 `(with a :href ,dest :class ,class ,@body))
167 (defmacro img (dest &key class id alt style width height align)
169 (eval `(keyargs-string :class ,class :id ,id :alt ,alt :style ,style
170 :width ,width :height ,height :align ,align))))
171 `(lml-print ,(format nil "<img src=\"~A\"~A />" dest attr))))
173 (defmacro input (&key name class id type style size maxlength value checked)
175 (eval `(keyargs-string :name ,name :class ,class :id ,id :style ,style
176 :size ,size :maxlength ,maxlength :value ,value
177 :type ,type :checked ,checked))))
178 `(lml-print ,(format nil "<input~A />" attr))))
180 (defmacro meta (name content)
181 `(with meta :name ,name :content ,content))
183 (defmacro meta-key (&key name content http-equiv)
184 `(with meta :name ,name :content ,content :http-equiv ,http-equiv))
187 `(lml-print "<br />"))
190 `(lml-print "<hr />"))
192 (defmacro lml-tag-macro (tag)
194 (defmacro ,tag (&body body)
195 `(with ,',tag ,@body))
198 (defmacro lml-tag-class-macro (tag)
199 (let ((name (intern (format nil "~A-~A" tag :c))))
201 (defmacro ,name (&body body)
202 `(with ,',tag :class (quote ,(car body)) ,@(cdr body)))
205 (eval-when (:compile-toplevel :load-toplevel :execute)
206 (defparameter *macro-list*
207 '(a div span h1 h2 h3 h4 h5 h6 i b p li ul ol table tbody td tr body head
208 html title pre tt u dl dt dd kbd code form))
209 (export '(link link-c br hr img input meta meta-key))
210 (export *macro-list*))
212 (loop for i in *macro-list*
214 (eval `(lml-tag-macro ,i))
215 (eval `(lml-tag-class-macro ,i)))
217 (defmacro print-page (title &body body)
223 (defmacro page (out-file &body body)
224 `(with-open-file (*html-output*
225 (lml-file-name ,out-file :output)
227 :if-exists :supersede)
229 (html :xmlns "http://www.w3.org/1999/xhtml"
233 (make-array 1024 :fill-pointer 0 :adjustable t :element-type 'character))
235 (set-macro-character #\[
236 #'(lambda (stream char)
237 (declare (ignore char))
239 (curr-string (new-string))
242 (declare (type fixnum paren-level))
243 (do ((ch (read-char stream t nil t) (read-char stream t nil t)))
247 ;; Starting top-level ,(
250 (setf curr-string (coerce curr-string `(simple-array character (*))))
252 (push `(lml-print ,curr-string) forms)
253 (setq curr-string (new-string))
255 (vector-push #\( curr-string)
256 (do ((ch (read-char stream t nil t) (Read-char stream t nil t)))
257 ((and (eql ch #\)) (zerop paren-level)))
259 (format *trace-output* "Syntax error reading #\]")
266 (vector-push-extend ch curr-string))
267 (vector-push-extend #\) curr-string)
268 (let ((eval-string (read-from-string curr-string))
271 `(let ((,res ,eval-string))
275 (setq curr-string (new-string)))
276 ;; read comma, then non #\( char
279 (setq got-comma nil))
280 (vector-push-extend #\, curr-string) ;; push previous command
281 (vector-push-extend ch curr-string)))
282 ;; previous character is not a comma
287 (vector-push-extend ch curr-string)))))
290 (setf curr-string (coerce curr-string `(simple-array character (*))))
292 (push `(lml-print ,curr-string) forms)
293 `(progn ,@(nreverse forms)))))