/usr/share/gauche-0.9/0.9.1/lib/text/html-lite.scm is in gauche 0.9.1-5.
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;;; html-lite.scm - lightweight HTML construction
;;;
;;; Copyright (c) 2000-2010 Shiro Kawai <shiro@acm.org>
;;;
;;; Redistribution and use in source and binary forms, with or without
;;; modification, are permitted provided that the following conditions
;;; are met:
;;;
;;; 1. Redistributions of source code must retain the above copyright
;;; notice, this list of conditions and the following disclaimer.
;;;
;;; 2. Redistributions in binary form must reproduce the above copyright
;;; notice, this list of conditions and the following disclaimer in the
;;; documentation and/or other materials provided with the distribution.
;;;
;;; 3. Neither the name of the authors nor the names of its contributors
;;; may be used to endorse or promote products derived from this
;;; software without specific prior written permission.
;;;
;;; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
;;; "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
;;; LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
;;; A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
;;; OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
;;; SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
;;; TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
;;; PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
;;; LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
;;; NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
;;; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
;;;
(define-module text.html-lite
(use text.tree)
(use srfi-1)
(export html-escape html-escape-string html-doctype)
)
(select-module text.html-lite)
;; Escaping ---------------------------------------------
(define (html-escape)
(port-for-each (lambda (c)
(case c
((#\<) (display "<"))
((#\>) (display ">"))
((#\&) (display "&"))
((#\") (display """))
(else (display c))
))
read-char))
(define (html-escape-string string)
(with-string-io (x->string string) html-escape))
;; Doctype ----------------------------------------------
;; Doctype database
;; (type ...) => (xml? doctype)
(define-constant *doctype-alist*
'(((:strict :html :html-strict :html-4.01 :html-4.01-strict)
#f
"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01//EN\"
\"http://www.w3.org/TR/html4/strict.dtd\">\n")
((:transitional :html-transitional :html-4.01-transitional)
#f
"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\"
\"http://www.w3.org/TR/html4/loose.dtd\">\n")
((:frameset :html-frameset :html-4.01-frameset)
#f
"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Frameset//EN\"
\"http://www.w3.org/TR/html4/frameset.dtd\">\n")
((:xhtml-1.0-strict :xhtml-1.0)
#t
"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\"
\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n")
((:xhtml-1.0-transitional)
#t
"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"
\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n")
((:xhtml-1.0-frameset)
#t
"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Frameset//EN\"
\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd\">\n")
((:xhtml-1.1)
#t
"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.1//EN\"
\"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd\">\n")
))
(define (html-doctype :key (type :html-4.01-strict))
(cond ((find (lambda (e) (memq type (car e))) *doctype-alist*)
=> caddr )
(else (error "Unknown doctype type spec" type))))
;; Elements ------------------------------------------------
(define (make-html-element name . args)
(let ((empty? (get-keyword :empty? args #f)))
(define (get-attr args attrs)
(cond ((null? args) (values (reverse attrs) args))
((keyword? (car args))
(cond ((null? (cdr args))
(values (reverse (list* (car args) " " attrs)) args))
((eq? (cadr args) #f)
(get-attr (cddr args) attrs))
((eq? (cadr args) #t)
(get-attr (cddr args) (list* (car args) " " attrs)))
(else
(get-attr (cddr args)
(list* (format #f "=\"~a\""
(html-escape-string (x->string (cadr args))))
(car args)
" "
attrs)))))
(else (values (reverse attrs) args))))
(if empty?
(lambda args
(receive (attr args) (get-attr args '())
(unless (null? args)
(errorf "element ~s can't have content: ~s" name args))
(list "<" name attr " />")))
(lambda args
(receive (attr args) (get-attr args '())
(list "<" name attr ">" args "</" name "\n>"))))))
(define-macro (define-html-elements . elements)
(define (make-scheme-name name)
(string->symbol (format #f "html:~a" name)))
(let loop ((elements elements)
(r '()))
(cond ((null? elements) `(begin ,@(reverse r)))
((and (pair? (cdr elements)) (eqv? (cadr elements) :empty))
(loop (cddr elements)
(list* `(define ,(make-scheme-name (car elements))
(make-html-element ',(car elements) :empty? #t))
`(export ,(make-scheme-name (car elements)))
r)))
(else
(loop (cdr elements)
(list* `(define ,(make-scheme-name (car elements))
(make-html-element ',(car elements)))
`(export ,(make-scheme-name (car elements)))
r))))
))
;; http://www.w3.org/TR/html4/sgml/dtd.html
;; TEXT MARKUP
;; %fontstyle
(define-html-elements tt i b big small)
;; %phrase
(define-html-elements em strong dfn code samp kbd var cite abbr acronym)
(define-html-elements sub sup span bdo br :empty)
;; HTML CONTENT MODELS
;; DOCUMENT BODY
(define-html-elements body address div)
;; THE ANCHOR ELEMENT
(define-html-elements a)
;; cLIENT-SIDE IMAGE MAPS
(define-html-elements map area :empty)
;; THE LINK EKEMENT
(define-html-elements link :empty)
;; IMAGES
(define-html-elements img :empty)
;; OBJECT
(define-html-elements object param :empty)
;; HORIZONTAL RULE
(define-html-elements hr :empty)
;; PARAGRAPHS
(define-html-elements p)
;; HEADINGS
(define-html-elements h1 h2 h3 h4 h5 h6)
;; PREFORMATTED
(define-html-elements pre)
;; INLINE QUOTES
(define-html-elements q)
;; BLOCK-LIKE QUOTES
(define-html-elements blockquote)
;; INSERTED/DELETED TEXT
(define-html-elements ins del)
;; LISTS
(define-html-elements dl dt dd ol ul li)
;; FORMS
(define-html-elements form label input :empty select optgroup option
textarea fieldset legend button)
;; TABLES
(define-html-elements table caption thead tfoot tbody colgroup
col :empty tr th td)
;; DOCUMENT HEAD
(define-html-elements head title base :empty meta :empty
style script noscript)
;; DOCUMENT STRUCTURE
(define-html-elements html)
;; FRAMES
(define-html-elements frameset frame noframes iframe)
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