;; Copyright 2007-2008, Matthew Welland.
;;
;; This program is made available under the GNU GPL version 2.0 or
;; greater. See the accompanying file COPYING for details.
;;
;; This program is distributed WITHOUT ANY WARRANTY; without even the
;; implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
;; PURPOSE.
;; stml is a list of html strings
;; extract various tokens from the parameter list
;; 'key val => put in the params list
;; strings => maintain order and add to the datalist <<== IMPORTANT
(define (s:extract inlst)
(if (null? inlst) inlst
(let loop ((data '())
(params '())
(head (car inlst))
(tail (cdr inlst)))
;; (print "head=" head " tail=" tail)
(cond
((null? tail)
(if (symbol? head) ;; the last item is a param - borked
(s:log "ERROR: param with no value"))
(list (append data (list (s:any->string head))) params))
((or (string? head)(list? head)(number? head))
(loop (append data (list (s:any->string head))) params (car tail) (cdr tail)))
((symbol? head)
(let ((new-params (cons (list head (car tail)) params))
(new-tail (cdr tail)))
(if (null? new-tail) ;; we are done, no more params etc.
(list data new-params)
(loop data new-params (car new-tail)(cdr new-tail)))))
(else
(s:log "WARNING: Malformed input, you have broken stml, probably in a form: head=" head
"\ntail=" tail
"\ninlst=" inlst
"\nparams=" params)
(if (null? tail)
(list data params)
(loop data params (car tail)(cdr tail))))))))
;; most tags can be handled by this routine
(define (s:common-tag tagname args)
(let* ((inputs (s:extract args))
(data (car inputs))
(params (s:process-params (cadr inputs))))
(list (conc "<" tagname params ">")
data
(conc "</" tagname ">"))))
;; Suggestion: order these alphabetically
(define (s:a . args) (s:common-tag "A" args))
(define (s:b . args) (s:common-tag "B" args))
(define (s:u . args) (s:common-tag "U" args))
(define (s:big . args) (s:common-tag "BIG" args))
(define (s:body . args) (s:common-tag "BODY" args))
(define (s:center . args) (s:common-tag "CENTER" args))
(define (s:code . args) (s:common-tag "CODE" args))
(define (s:div . args) (s:common-tag "DIV" args))
(define (s:h1 . args) (s:common-tag "H1" args))
(define (s:h2 . args) (s:common-tag "H2" args))
(define (s:h3 . args) (s:common-tag "H3" args))
(define (s:head . args) (s:common-tag "HEAD" args))
(define (s:html . args) (s:common-tag "HTML" args))
(define (s:i . args) (s:common-tag "I" args))
(define (s:img . args) (s:common-tag "IMG" args))
(define (s:input . args) (s:common-tag "INPUT" args))
(define (s:link . args) (s:common-tag "LINK" args))
(define (s:p . args) (s:common-tag "P" args))
(define (s:strong . args) (s:common-tag "STRONG" args))
(define (s:table . args) (s:common-tag "TABLE" args))
(define (s:td . args) (s:common-tag "TD" args))
(define (s:title . args) (s:common-tag "TITLE" args))
(define (s:tr . args) (s:common-tag "TR" args))
(define (s:small . args) (s:common-tag "SMALL" args))
(define (s:quote . args) (s:common-tag "QUOTE" args))
(define (s:hr . args) (s:common-tag "HR" args))
(define (s:li . args) (s:common-tag "LI" args))
(define (s:ul . args) (s:common-tag "UL" args))
(define (s:ol . args) (s:common-tag "OL" args))
(define (s:dl . args) (s:common-tag "DL" args))
(define (s:dt . args) (s:common-tag "DT" args))
(define (s:dd . args) (s:common-tag "DD" args))
(define (s:pre . args) (s:common-tag "PRE" args))
(define (s:span . args) (s:common-tag "SPAN" args))
(define (s:dblquote . args)
(let* ((inputs (s:extract args))
(data (caar inputs))
(params (s:process-params (cadr inputs))))
(conc """ data """)))
(define (s:br . args) "<BR>") ;; THIS MAY NOT WORK!!!! BR CAN (MISTAKENLY) GET PARAM TEXT
;; (define (s:br . args) (s:common-tag "BR" args))
(define (s:font . args) (s:common-tag "FONT" args))
(define (s:err-font . args)
(s:b (s:font 'color "red" args)))
(define (s:comment . args)
(let* ((inputs (s:extract args))
(data (car inputs))
(params (s:process-params (cadr inputs))))
(list "<!--" data "-->")))
(define (s:null . args) ;; nop
(let* ((inputs (s:extract args))
(data (car inputs))
(params (s:process-params (cadr inputs))))
(list data)))
;; puts a nice box around a chunk of stuff
(define (s:fieldset legend . args)
(list "<FIELDSET><LEGEND>" legend "<LEGEND>" args "</FIELDSET>"))
;; USE 'page_override to override a linkto page from a button
(define (s:form . args)
;; create a link for calling back into the current page and calling a specified
;; function
(let* ((action (let ((v (s:find-param 'action args)))
(if v v "default")))
(id (let ((i (s:find-param 'id args)))
(if i i #f)))
(page (let ((p (slot-ref s:session 'page)))
(if p p "home")))
;; (link (session:link-to s:session page (if id
;; (list 'action action 'id id)
;; (list 'action action)))))
(link (if (string=? (substring action 0 5) "http:") ;; if first part of string is http:
action
(session:link-to s:session
page
(if id
(list 'action action 'id id)
(list 'action action))))))
;; (script (slot-ref s:session 'script))
;; (action-str (string-append script "/" page "?action=" action)))
(s:common-tag "FORM" (append (s:remove-param-matching (s:remove-param-matching args 'action) 'id)
(list 'action link)))))
;; look up the variable name (via the 'name tag) then inject the value from the session var
;; replacing the 'value value if it is already there, adding it if it is not.
(define (s:preserve tag args)
(let* ((var-name (s:find-param 'name args)) ;; name='varname'
(value (let ((v (s:get var-name)))
(if v v #f)))
(newargs (append (s:remove-param-matching args 'value) (if value (list 'value value) '()))))
(s:common-tag tag newargs)))
(define (s:input-preserve . args)
(s:preserve "INPUT" args))
;; text areas are done a little differently. The value is stored between the tags <textarea ...>the value goes here</textarea>
(define (s:textarea-preserve . args)
(let* ((var-name (s:find-param 'name args))
(value (let ((v (s:get var-name)))
(if v v #f))))
(s:common-tag "TEXTAREA" (if value (cons value args) args))))
(define (s:option dat)
(let ((len (length dat)))
(cond
((eq? len 1)
(let ((item (car dat)))
(s:option (list item item item))))
((eq? len 2)
(s:option (append dat (list (car dat)))))
(else
(let ((label (car dat))
(value (cadr dat))
(dispval (caddr dat))
(selected (if (> len 3)(cadddr dat) #f)))
(list (conc "<OPTION "
(if selected " selected " "")
"label=\"" label
"\" value=\"" value
"\">" dispval "</OPTION>")))))))
;; call only with (label (label value dispval [#t]) ...)
;; NB// sadly this block is redundantly almost identical to the s:select
;; fix that later ...
(define (s:optgroup dat)
(let ((label (car dat))
(rem (cdr dat)))
(if (null? rem)
(s:common-tag "OPTGROUP" 'label label)
(let loop ((hed (car rem))
(tal (cdr rem))
(res (list (conc "<OPTGROUP label=" label))))
;; (print "hed: " hed " tal: " tal " res: " res)
(let ((new (append res (list (if (list? (cadr hed))
(s:optgroup hed)
(s:option hed))))))
(if (null? tal)
(append new (list "</OPTGROUP>"))
(loop (car tal)(cdr tal) new)))))))
;; items is a hierarchial alist
;; ( (label1 value1 dispval1 #t) ;; <== this one is selected
;; (label2 (label3 value2 dispval2)
;; (label4 value3 dispval3)))
;;
;; required arg is 'name
(define (s:select items . args)
(if (null? items)
(s:common-tag "SELECT" args)
(let loop ((hed (car items))
(tal (cdr items))
(res '()))
;; (print "hed: " hed " tal: " tal " res: " res)
(let ((new (append res (list (if (and (> (length hed) 1)
(list? (cadr hed)))
(s:optgroup hed)
(s:option hed))))))
(if (null? tal)
(s:common-tag "SELECT" (cons new args))
(loop (car tal)(cdr tal) new))))))
(define (s:color . args)
"#00ff00")
(define (s:print indent inlst)
(map (lambda (x)
(cond
((or (string? x)(symbol? x))
(print (conc (make-string (* indent 2) #\ ) (any->string x))))
((list? x)
(s:print (+ indent 1) x))
(else
;; (print "ERROR: Bad input 01") ;; why do anything with junk?
)))
inlst))
(define (s:cgi-out inlst)
(s:output (current-output-port) inlst))
(define (s:output port inlst)
(map (lambda (x)
(cond
((string? x) (print x)) ;; (print x))
((symbol? x) (print x)) ;; (print x))
((list? x) (s:output port x))
(else
;; (print "ERROR: Bad input 02") ;; why do anything? don't output junk.
)))
inlst))
; (if (> (length inlst) 2)
; (print)))
(define (s:output-new port inlst)
(with-output-to-port port
(lambda ()
(map (lambda (x)
(cond
((string? x) (print x))
((symbol? x) (print x))
((list? x) (s:output port x))
(else
;; (print "ERROR: Bad input 03")
)))
inlst))))