/usr/share/gnucash/scm/html-document.scm is in gnucash-common 1:2.6.1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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;; html-document.scm : generate HTML programmatically, with support
;; for simple style elements.
;; Copyright 2000 Bill Gribble <grib@gnumatic.com>
;;
;; This program is free software; you can redistribute it and/or
;; modify it under the terms of the GNU General Public License as
;; published by the Free Software Foundation; either version 2 of
;; the License, or (at your option) any later version.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with this program; if not, contact:
;;
;; Free Software Foundation Voice: +1-617-542-5942
;; 51 Franklin Street, Fifth Floor Fax: +1-617-542-2652
;; Boston, MA 02110-1301, USA gnu@gnu.org
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(gnc:module-load "gnucash/html" 0)
(use-modules (gnucash printf))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; <html-document> class
;; this is the top-level object representing an entire HTML document.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define <html-document>
(make-record-type "<html-document>"
'(style-sheet style-stack style style-text title headline objects)))
(define gnc:html-document?
(record-predicate <html-document>))
(define gnc:make-html-document-internal
(record-constructor <html-document>))
(define (gnc:make-html-document)
(gnc:make-html-document-internal
#f ;; the stylesheet
'() ;; style stack
(gnc:make-html-style-table) ;; document style info
#f ;; style text
"" ;; document title
#f ;; headline
'() ;; subobjects
))
(define gnc:html-document-set-title!
(record-modifier <html-document> 'title))
(define gnc:html-document-title
(record-accessor <html-document> 'title))
(define gnc:html-document-set-headline!
(record-modifier <html-document> 'headline))
(define gnc:html-document-headline
(record-accessor <html-document> 'headline))
(define gnc:html-document-set-style-sheet!
(record-modifier <html-document> 'style-sheet))
(define gnc:html-document-set-style-sheet!
(record-modifier <html-document> 'style-sheet))
(define gnc:html-document-style-sheet
(record-accessor <html-document> 'style-sheet))
(define gnc:html-document-set-style-stack!
(record-modifier <html-document> 'style-stack))
(define gnc:html-document-style-stack
(record-accessor <html-document> 'style-stack))
(define gnc:html-document-set-style-text!
(record-modifier <html-document> 'style-text))
(define gnc:html-document-style-text
(record-accessor <html-document> 'style-text))
(define gnc:html-document-set-style-internal!
(record-modifier <html-document> 'style))
(define gnc:html-document-style
(record-accessor <html-document> 'style))
(define gnc:html-document-set-objects!
(record-modifier <html-document> 'objects))
(define gnc:html-document-objects
(record-accessor <html-document> 'objects))
(define gnc:html-document?
(record-predicate <html-document>))
(define (gnc:html-document-set-style! doc tag . rest)
(let ((newstyle #f))
(if (and (= (length rest) 2)
(procedure? (car rest)))
(set! newstyle
(apply gnc:make-html-data-style-info rest))
(set! newstyle
(apply gnc:make-html-markup-style-info rest)))
(gnc:html-style-table-set! (gnc:html-document-style doc) tag newstyle)))
(define (gnc:html-document-tree-collapse tree)
(let ((retval '()))
(define (do-list list)
(for-each
(lambda (elt)
(if (string? elt)
(set! retval (cons elt retval))
(if (not (list? elt))
(set! retval
(cons (with-output-to-string
(lambda () (display elt)))
retval))
(do-list elt))))
list))
(do-list tree)
retval))
;; first optional argument is "headers?"
;; returns the html document as a string, I think.
(define (gnc:html-document-render doc . rest)
(let ((stylesheet (gnc:html-document-style-sheet doc))
(headers? (if (null? rest) #f (if (car rest) #t #f)))
(style-text (gnc:html-document-style-text doc))
)
(if stylesheet
;; if there's a style sheet, let it do the rendering
(gnc:html-style-sheet-render stylesheet doc headers?)
;; otherwise, do the trivial render.
(let* ((retval '())
(push (lambda (l) (set! retval (cons l retval))))
(objs (gnc:html-document-objects doc))
(work-to-do (length objs))
(css? (gnc-html-engine-supports-css))
(work-done 0)
(title (gnc:html-document-title doc)))
;; compile the doc style
(gnc:html-style-table-compile (gnc:html-document-style doc)
(gnc:html-document-style-stack doc))
;; push it
(gnc:html-document-push-style doc (gnc:html-document-style doc))
(if (not (string-null? title))
(gnc:report-render-starting (gnc:html-document-title doc)))
(if (not (null? headers?))
(begin
;;This is the only place where <html> appears
;;with the exception of 2 reports:
;;./share/gnucash/guile-modules/gnucash/report/taxinvoice.eguile.scm:<html>
;;./share/gnucash/guile-modules/gnucash/report/balsheet-eg.eguile.scm:<html>
;; Validate against XHTML 1.0 Transitional
(push "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \n\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">")
(push "<html xmlns=\"http://www.w3.org/1999/xhtml\">\n")
(push "<head>\n")
(push "<meta http-equiv=\"content-type\" content=\"text/html; charset=utf-8\" />\n")
(if css?
(if style-text
(push (list "</style>" style-text "<style type=\"text/css\">\n"))))
(let ((title (gnc:html-document-title doc)))
(if title
(push (list "</title>" title "<title>\n"))))
(push "</head>\n")
;; this lovely little number just makes sure that <body>
;; attributes like bgcolor get included
(push ((gnc:html-markup/open-tag-only "body") doc))))
;; now render the children
(for-each
(lambda (child)
(begin
(push (gnc:html-object-render child doc))
(set! work-done (+ 1 work-done))
(gnc:report-percent-done (* 100 (/ work-done work-to-do)))))
objs)
(if (not (null? headers?))
(begin
(push "</body>\n")
(push "</html>\n")))
(gnc:report-finished)
(gnc:html-document-pop-style doc)
(gnc:html-style-table-uncompile (gnc:html-document-style doc))
(apply string-append
(gnc:html-document-tree-collapse retval))))))
(define (gnc:html-document-push-style doc style)
(gnc:html-document-set-style-stack!
doc (cons style (gnc:html-document-style-stack doc))))
(define (gnc:html-document-pop-style doc)
(if (not (null? (gnc:html-document-style-stack doc)))
(gnc:html-document-set-style-stack!
doc (cdr (gnc:html-document-style-stack doc)))))
(define (gnc:html-document-add-object! doc obj)
(gnc:html-document-set-objects!
doc
(append (gnc:html-document-objects doc)
(list (gnc:make-html-object obj)))))
(define (gnc:html-document-append-objects! doc objects)
(gnc:html-document-set-objects!
doc
(append (gnc:html-document-objects doc) objects)))
(define (gnc:html-document-fetch-markup-style doc markup)
(let ((style-info #f)
(style-stack (gnc:html-document-style-stack doc)))
(if (not (null? style-stack))
(set! style-info
(gnc:html-style-table-fetch
(car style-stack)
(cdr style-stack)
markup)))
(if (not style-info)
(gnc:make-html-markup-style-info)
style-info)))
(define (gnc:html-document-fetch-data-style doc markup)
(let ((style-info #f)
(style-stack (gnc:html-document-style-stack doc)))
(if (not (null? (gnc:html-document-style-stack doc)))
(set! style-info
(gnc:html-style-table-fetch
(car style-stack)
(cdr style-stack)
markup)))
(if (not style-info)
(gnc:make-html-data-style-info
(lambda (datum parms)
(sprintf #f "%a %a" markup datum))
#f)
style-info)))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; markup-rendering functions : markup-start and markup-end return
;; pre-body and post-body HTML for the given markup tag.
;; the optional rest arguments are lists of attribute-value pairs:
;; (gnc:html-document-markup-start doc "markup"
;; '("attr1" "value1") '("attr2" "value2"))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define (gnc:html-document-markup-start doc markup end-tag? . rest)
(let ((childinfo (gnc:html-document-fetch-markup-style doc markup))
(extra-attrib
(if (not (null? rest))
rest #f))
(show-result #f))
;; now generate the start tag
(let ((tag (gnc:html-markup-style-info-tag childinfo))
(attr (gnc:html-markup-style-info-attributes childinfo))
(face (gnc:html-markup-style-info-font-face childinfo))
(size (gnc:html-markup-style-info-font-size childinfo))
(color (gnc:html-markup-style-info-font-color childinfo)))
;; "" tags mean "show no tag"; #f tags means use default.
(cond ((not tag)
(set! tag markup))
((and (string? tag) (string=? tag ""))
(set! tag #f)))
(let* ((retval '())
(push (lambda (l) (set! retval (cons l retval))))
(add-internal-tag (lambda (tag) (push "<") (push tag) (push ">")))
(add-attribute
(lambda (key value prior)
(push " ") (push key)
(if value (begin (push "=\"")
(push value)
(push "\"")))
#t))
(addextraatt
(lambda (attr)
(cond ((string? attr) (push " ") (push attr))
(attr (gnc:warn "non-string attribute" attr)))))
(build-first-tag
(lambda (tag)
(push "\n<") (push tag)
(if attr (hash-fold add-attribute #f attr))
(if extra-attrib (for-each addextraatt extra-attrib))
(if (not end-tag?)
(push " /")) ;;add closing "/" for no-end elements...
(push ">"))))
(if tag
(if (list? tag)
(begin
(build-first-tag (car tag))
(for-each add-internal-tag (cdr tag)))
(build-first-tag tag)))
;; XXX Font styling should be done through CSS, NOT html code
;; XXX Also, why is this even here? 'Font' is an html tag just like anything else,
;; so why does it have it's own custom pseudo code here? It should be built
;; as a call to this function just like any other tag, passing face/size/color as attributes.
(if (or face size color)
(begin
(push "<font ")
(if face
(begin
(push "face=\"") (push face) (push "\" ")))
(if size
(begin
(push "size=\"") (push size) (push "\" ")))
(if color
(begin
(push "color=\"") (push color) (push "\" ")))
(push ">")))
retval))))
(define (gnc:html-document-markup-end doc markup)
(let ((childinfo (gnc:html-document-fetch-markup-style doc markup)))
;; now generate the end tag
(let ((tag (gnc:html-markup-style-info-tag childinfo))
(closing-font-tag
(gnc:html-markup-style-info-closing-font-tag childinfo)))
;; "" tags mean "show no tag"; #f tags means use default.
(cond ((not tag)
(set! tag markup))
((and (string? tag) (string=? tag ""))
(set! tag #f)))
(let* ((retval '())
(push (lambda (l) (set! retval (cons l retval)))))
(if closing-font-tag
(push "</font>\n"))
(if tag
(let ((addtag (lambda (t)
(push "</")
(push tag)
(push ">\n"))))
(cond
((string? tag)
(addtag tag))
((list? tag)
(for-each addtag (reverse tag))))))
retval))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; html-document-render-data
;; looks up the relevant data style and renders the data accordingly
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define (gnc:html-document-render-data doc data)
(let ((style-info #f)
(data-type #f))
(cond
((number? data)
(set! data-type "<number>"))
((string? data)
(set! data-type "<string>"))
((boolean? data)
(set! data-type "<boolean>"))
((record? data)
(set! data-type (record-type-name (record-type-descriptor data))))
(#t
(set! data-type "<generic>")))
(set! style-info (gnc:html-document-fetch-data-style doc data-type))
((gnc:html-data-style-info-renderer style-info)
data (gnc:html-data-style-info-data style-info))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; <html-object> class
;; this is the parent of all the html object types. You should not
;; be creating <html-object> directly... use the specific type you
;; want.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define <html-object>
(make-record-type "<html-object>"
'(renderer data)))
(define gnc:html-object?
(record-predicate <html-object>))
(define gnc:make-html-object-internal
(record-constructor <html-object>))
(define (gnc:make-html-object obj)
(let ((o #f))
(if (not (record? obj))
;; for literals (strings/numbers)
(set! o
(gnc:make-html-object-internal
(lambda (obj doc)
(gnc:html-document-render-data doc obj))
;; if the object is #f, make it a placeholder
(if obj obj " ")))
(cond
((gnc:html-text? obj)
(set! o (gnc:make-html-object-internal
gnc:html-text-render obj)))
((gnc:html-table? obj)
(set! o (gnc:make-html-object-internal
gnc:html-table-render obj)))
((gnc:html-table-cell? obj)
(set! o (gnc:make-html-object-internal
gnc:html-table-cell-render obj)))
((gnc:html-barchart? obj)
(set! o (gnc:make-html-object-internal
gnc:html-barchart-render obj)))
((gnc:html-piechart? obj)
(set! o (gnc:make-html-object-internal
gnc:html-piechart-render obj)))
((gnc:html-scatter? obj)
(set! o (gnc:make-html-object-internal
gnc:html-scatter-render obj)))
((gnc:html-linechart? obj)
(set! o (gnc:make-html-object-internal
gnc:html-linechart-render obj)))
((gnc:html-object? obj)
(set! o obj))
;; other record types that aren't HTML objects
(#t
(set! o
(gnc:make-html-object-internal
(lambda (obj doc)
(gnc:html-document-render-data doc obj))
obj)))))
o))
(define gnc:html-object-renderer
(record-accessor <html-object> 'renderer))
(define gnc:html-object-set-renderer!
(record-modifier <html-object> 'renderer))
(define gnc:html-object-data
(record-accessor <html-object> 'data))
(define gnc:html-object-set-data!
(record-modifier <html-object> 'data))
(define (gnc:html-object-render obj doc)
(if (gnc:html-object? obj)
((gnc:html-object-renderer obj) (gnc:html-object-data obj) doc)
(let ((htmlo (gnc:make-html-object obj)))
(gnc:html-object-render htmlo doc))))
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