-;;; Macros for generating HTML from ParenScript code.
-
-(in-package :parenscript)
-
-(defun optimize-string-list (list)
- (let (res
- cur)
- (dolist (node list)
- (when (numberp node)
- (setf node (format nil "~A" node)))
- (cond ((null cur) (setf cur node))
- ((and (stringp cur)
- (stringp node))
- (setf cur (concatenate 'string cur node)))
- (t (push cur res)
- (setf cur node))))
- (push cur res)
- (nreverse res)))
-
-(defun process-html-forms (forms)
- (let (res)
- (labels ((handle-form (form)
- (cond ((keywordp form)
- (push (format nil "<~A/>"
- (string-downcase (symbol-name form))) res))
-
- ((atom form)
- (push form res))
-
- ((and (consp form)
- (keywordp (first form)))
- (let ((node-name (string-downcase (symbol-name (first form)))))
- (push (format nil "<~A>" node-name) res)
- (map nil #'handle-form (cdr form))
- (push (format nil "</~A>" node-name) res)))
-
- ((and (consp form)
- (consp (first form))
- (keywordp (caar form)))
- (let ((node-name (string-downcase (symbol-name (caar form)))))
- (push (format nil "<~A" node-name) res)
-
- (loop with attrs = (cdar form)
- while attrs
- for attr-name = (pop attrs)
- for attr-test = (when (not (keywordp attr-name))
- (let ((test attr-name))
- (setf attr-name (pop attrs))
- test))
- for attr-val = (pop attrs)
- do
- (if attr-test
- (push `(if ,attr-test
- (+ ,(format nil " ~A=\"" (string-downcase (symbol-name attr-name)))
- ,attr-val
- "\"")
- "")
- res)
- (progn
- (push (format nil " ~A=\"" (string-downcase (symbol-name attr-name)))
- res)
- (push attr-val res)
- (push "\"" res))))
- (push ">" res)
- (map nil #'handle-form (cdr form))
- (push (format nil "</~A>" node-name) res)))
-
- ((consp form)
- (push form res)))))
- (map nil #'handle-form forms))
- (cons '+ (optimize-string-list (nreverse res)))))
-
-(define-ps-special-form ps-html (expecting &rest forms)
- (declare (ignore expecting))
- (compile-parenscript-form (process-html-forms forms)))
-
+(in-package "PARENSCRIPT")
+
+(defvar *html-empty-tag-aware-p* t)
+(defvar *html-mode* :sgml "One of :sgml or :xml")
+
+(defvar *html-empty-tags* '(:area :atop :audioscope :base :basefont :br :choose :col :frame
+ :hr :img :input :isindex :keygen :left :limittext :link :meta
+ :nextid :of :over :param :range :right :spacer :spot :tab :wbr))
+
+(defun empty-tag-p (tag)
+ (and *html-empty-tag-aware-p*
+ (member tag *html-empty-tags*)))
+
+(defun concat-constant-strings (str-list)
+ (reverse (reduce (lambda (optimized-list next-obj)
+ (if (and (or (numberp next-obj) (stringp next-obj)) (stringp (car optimized-list)))
+ (cons (format nil "~a~a" (car optimized-list) next-obj) (cdr optimized-list))
+ (cons next-obj optimized-list)))
+ (cons () str-list))))
+
+(defun process-html-forms-lhtml (forms)
+ (let ((r ()))
+ (labels ((process-attrs (attrs)
+ (loop while attrs
+ for attr-name = (pop attrs)
+ for attr-test = (when (not (keywordp attr-name))
+ (let ((test attr-name))
+ (setf attr-name (pop attrs))
+ test))
+ for attr-val = (pop attrs)
+ do
+ (if attr-test
+ (push `(if ,attr-test
+ (concat-string ,(format nil " ~A=\"" attr-name) ,attr-val "\"")
+ "")
+ r)
+ (progn
+ (push (format nil " ~A=\"" attr-name) r)
+ (push attr-val r)
+ (push "\"" r)))))
+ (process-form% (tag attrs content)
+ (push (format nil "<~A" tag) r)
+ (process-attrs attrs)
+ (if (or content (not (empty-tag-p tag)))
+ (progn (push ">" r)
+ (map nil #'process-form content)
+ (push (format nil "</~A>" tag) r))
+ (progn (when (eql *html-mode* :xml)
+ (push "/" r))
+ (push ">" r))))
+ (process-form (form)
+ (cond ((keywordp form) (process-form (list form)))
+ ((atom form) (push form r))
+ ((and (consp form) (keywordp (car form)))
+ (process-form% (car form) () (cdr form)))
+ ((and (consp form) (consp (first form)) (keywordp (caar form)))
+ (process-form% (caar form) (cdar form) (cdr form)))
+ (t (push form r)))))
+ (map nil #'process-form forms)
+ (concat-constant-strings (reverse r)))))
+
+(defun process-html-forms-cl-who (forms)
+ (let ((r ()))
+ (labels ((process-form (form)
+ (cond ((keywordp form) (process-form (list form)))
+ ((atom form) (push form r))
+ ((and (consp form) (keywordp (car form)))
+ (push (format nil "<~A" (car form)) r)
+ (labels ((process-attributes (el-body)
+ (when el-body
+ (if (or (consp (car el-body)) (= 1 (length el-body)))
+ el-body
+ (progn (push (format nil " ~A=\"" (car el-body)) r)
+ (push (cadr el-body) r)
+ (push "\"" r)
+ (process-attributes (cddr el-body)))))))
+ (let ((content (process-attributes (cdr form))))
+ (if (or content (not (empty-tag-p (car form))))
+ (progn (push ">" r)
+ (when content (map nil #'process-form content))
+ (push (format nil "</~A>" (car form)) r))
+ (progn (when (eql *html-mode* :xml)
+ (push "/" r))
+ (push ">" r))))))
+ (t (push form r)))))
+ (map nil #'process-form forms)
+ (concat-constant-strings (reverse r)))))
+
+(defmacro+ps ps-html (&rest html-forms)
+ `(concat-string ,@(process-html-forms-lhtml html-forms)))
+
+(defmacro+ps who-ps-html (&rest html-forms)
+ `(concat-string ,@(process-html-forms-cl-who html-forms)))
HCoop / clinton / parenscript.git / blobdiff