2023-02-13 08:45:50 -05:00
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;;;; -*-Scheme-*-
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;;;;
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;;;; $Revision: 1.18 $
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;;;;
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;;;; `man' specific definitions for HTML output format
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;;; --------------------------------------------------------------------------
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;;; Options.
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(define-option 'do-signature 'boolean #t)
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;;; --------------------------------------------------------------------------
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;;; Miscellaneous definitions.
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(defstring 'R "®") ; trademark
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(defstring 'S "") ; change to default point size
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(defstring 'lq "``")
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(defstring 'rq "''")
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(define-font 'L '<b> '</b>) ; whatever font L is supposed to be...
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;;; --------------------------------------------------------------------------
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;;; Bookkeeping for .TH, for requests that occur in pairs, etc.
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(define-pair header header? "<h2>\n" "<hr></h2>\n")
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(define-pair tag-para tag-para? "<dl>\n" "</dl>\n")
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(define-pair list-para list-para? "<ul>\n" "</ul>\n")
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(define-pair hang-para hang-para? "<dt>" "<dd>\n")
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(define (reset-everything)
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(concat
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(reset-font)
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(center 0)
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(header #f)
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(preform #f)
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(hang-para #f)
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(tag-para #f)
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(list-para #f)))
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(define-nested-pair indent indent-level "<dl><dt><dd>\n" "</dl>\n")
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;;; --------------------------------------------------------------------------
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;;; File prolog and epilog functions.
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(defevent 'prolog 10
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(lambda (pathname filename)
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(if (not (string=? filename "stdin"))
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(set-option! 'document filename))
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(let ((docname (option 'document)))
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(if docname
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(set-output-stream! (open-output-stream (concat docname ".html"))))
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(emit-HTML-prolog))))
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(defevent 'epilog 10
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(lambda _
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(complain-if-no-title)
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(emit (reset-everything) (indent 0))
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(if (option 'do-signature)
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(emit
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(substitute
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"<p><hr>\nMarkup created by <em>%progname%</em> %version%,")
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nbsp nbsp
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(substitute "%monthname+% %day%, %year%.\n")))
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(emit "</body>\n</html>\n")
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(close-stream (set-output-stream! #f))))
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;;; --------------------------------------------------------------------------
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;;; Title, section, subsection.
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(define title-seen? #f)
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(define (complain-if-no-title)
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(if (not title-seen?)
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(quit "manual page must begin with .TH request")))
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(defmacro 'TH
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(lambda (TH what section . _)
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(let ((title (option 'title)))
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(set! title-seen? #t)
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(concat "<title>"
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(substitute (if title title "Manual page for %1%(%2%)")
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(translate what) (translate section))
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"</title>\n</head>\n<body>\n"))))
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(defmacro 'SH
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(lambda (SH first . rest)
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(complain-if-no-title)
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(emit (reset-everything) (indent 0))
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(if (string=? first "NAME")
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(header #t)
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(concat "<h2>" (parse (apply spread first rest)) "</h2>\n"))))
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(defmacro 'SS
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(lambda (SS . args)
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(complain-if-no-title)
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(emit (reset-everything) (indent 0))
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(cond
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((null? args)
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(defevent 'line 11
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(lambda _ (emit "</h3>\n") (defevent 'line 11 #f)))
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(emit "<h3>"))
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(else
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(concat "<h3>" (parse (apply spread args)) "</h3>\n")))))
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;;; --------------------------------------------------------------------------
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;;; Font switching requests.
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;;;
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;;; Both with-font and with-fonts include a terminating newline in the
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;;; parsing, because people are using .I xxx\c and .BR xxx\c etc., and
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;;; end-of-sentence must be detected in situations like .BR send(2) .
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(define (with-font font words)
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(let ((old current-font))
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(cond
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((null? words)
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(defevent 'line 10
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(lambda _ (emit (change-font old)) (defevent 'line 10 #f)))
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(emit (change-font font) #\newline))
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(else
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(concat (change-font font)
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(parse (apply spread words) #\newline)
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(change-font old))))))
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(defmacro 'I (lambda (I . args) (with-font "I" args)))
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(defmacro 'B (lambda (B . args) (with-font "B" args)))
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(defmacro 'SB (requestdef 'B))
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(defmacro 'SM
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(lambda (SM . words)
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(if (null? words) "" (parse (apply spread words) #\newline))))
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(define (with-fonts f1 f2 words)
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(define (recurse f1 f2 words)
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(if (null? words)
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""
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(concat (change-font f1)
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(parse (concat (car words)
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(if (null? (cdr words)) #\newline "")))
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(recurse f2 f1 (cdr words)))))
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(let ((old current-font))
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(concat (recurse f1 f2 words) (change-font old))))
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(defmacro 'BI (lambda (BI . args) (with-fonts "B" "I" args)))
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2023-02-15 07:39:08 -05:00
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(define (man-page-filename page section)
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(string-append page "." section))
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(define (hyperlink page section body)
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(let ((url (man-page-filename page section)))
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(format #f "<a href=\"~a\">~a</a>" url body)))
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(define (parse-section-in-parentheses str)
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(let* ((n (string-length str))
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(r (and (>= n 3)
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(char=? #\( (string-ref str 0))
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(char<=? #\1 (string-ref str 1))
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(char<=? (string-ref str 1) #\9)
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(cond ((char=? #\) (string-ref str (- n 1)))
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1)
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((and (>= n 4)
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(char=? #\) (string-ref str (- n 2)))
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(char=? #\, (string-ref str (- n 1))))
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2)
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(else
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#f)))))
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(and r (substring str 1 (- n r)))))
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(defmacro 'BR
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(lambda (BR . args)
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(let ((section (and (= (length args) 2)
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(parse-section-in-parentheses (list-ref args 1)))))
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(if section
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(hyperlink (list-ref args 0) section (with-fonts "B" "R" args))
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(with-fonts "B" "R" args)))))
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2023-02-13 08:45:50 -05:00
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(defmacro 'IB (lambda (IB . args) (with-fonts "I" "B" args)))
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(defmacro 'IR (lambda (IR . args) (with-fonts "I" "R" args)))
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(defmacro 'RB (lambda (RB . args) (with-fonts "R" "B" args)))
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(defmacro 'RI (lambda (RB . args) (with-fonts "R" "I" args)))
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;;; --------------------------------------------------------------------------
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;;; Indented paragraphs with labels.
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;;;
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;;; A heuristic is used to determine whether to emit a bulleted list
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;;; or a tagged list: .TP with \(bu in the next input line and
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;;; .IP with \(bu as argument both start a bulleted list. Of course, in
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;;; case the style changes later, we have a problem and may want to end
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;;; the current list and begin a new one with the new style.
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(define (next-para-TP)
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(cond
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(tag-para?
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(defevent 'line 12
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(lambda _ (emit (reset-font) "<dd>\n") (defevent 'line 12 #f)))
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(emit "<dt>"))
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(else
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"<li>")))
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(define (next-para-IP arg)
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(cond
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(tag-para?
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(if (null? arg)
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"<dt><dd><p>\n"
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(concat "<dt>" (parse (car arg)) "<dd>\n")))
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((or (null? arg) (string=? (car arg) "\\(bu"))
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"<li>\n")
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(else
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(warn ".IP `arg' in a list that was begun as non-tagged")
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(concat "<li>" (parse (car arg)) "<br>\n"))))
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(defmacro 'TP
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(lambda _
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(emit (reset-font) (hang-para #f))
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(if preform?
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(begin
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(surprise ".TP inside .nf/.fi") #\newline)
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(let ((next (read-line)))
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(if (eof-object? next) (set! next #\newline))
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(cond
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((string=? next "\\(bu\n")
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(cond
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(tag-para?
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(emit (tag-para #f) (list-para #t))) ; change style
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(else
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(emit (list-para #t)))))
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(else
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(unread-line next)
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(cond
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(list-para?
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(emit (list-para #f) (tag-para #t))) ; change style
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(else
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(emit (tag-para #t))))))
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(next-para-TP)))))
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(defmacro 'IP
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(lambda (IP . arg)
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(emit (reset-font) (hang-para #f))
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(if preform?
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(begin
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(surprise ".IP inside .nf/.fi")
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(if (not (null? arg)) (concat (parse (car arg)) #\newline) #\newline))
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(if (or tag-para? list-para?)
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(next-para-IP arg)
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(cond
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((and (not (null? arg)) (string=? (car arg) "\\(bu"))
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(emit (list-para #t))
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(set! arg '()))
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(else
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(emit (tag-para #t))))
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(next-para-IP arg)))))
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;;; A hanging indent cannot be achieved in HTML. Therefore we have to
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;;; kludge .HP by beginning a `tag-para' and putting everything up to
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;;; the next line break between the <dt> and <dd>.
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(defmacro 'HP
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(lambda _
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(emit (reset-font) (hang-para #f))
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(cond
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(preform?
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(surprise ".HP inside .nf/.fi") #\newline)
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(else
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(if list-para? (emit (list-para #f))) ; change style
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(concat (tag-para #t) (hang-para #t))))))
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;;; --------------------------------------------------------------------------
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;;; Relative indent.
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(define (relative-indent request . _)
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(if preform?
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(surprise ".RS/.RE inside .nf/.fi"))
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(emit (reset-font) (hang-para #f) (tag-para #f) (list-para #f))
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(with-preform-preserved
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(indent (if (string=? request "RS") '+ '-))))
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(defmacro 'RS relative-indent)
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(defmacro 'RE relative-indent)
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;;; --------------------------------------------------------------------------
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;;; Paragraphs.
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(define (paragraph . _)
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(concat (reset-everything) "<p>\n"))
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(defmacro 'LP paragraph)
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(defmacro 'PP paragraph)
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(defmacro 'P paragraph)
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;;; --------------------------------------------------------------------------
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;;; Miscellaneous break-causing requests (must end .HP paragraph).
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(defrequest 'sp
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(let ((orig (requestdef 'sp)))
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(lambda (sp num)
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(concat (hang-para #f) (orig sp num)))))
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(defrequest 'bp (lambda _ (hang-para #f)))
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(defrequest 'ti
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(let ((orig (requestdef 'ti)))
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(lambda (ti num)
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(concat (hang-para #f) (orig ti num)))))
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;;; Kludge: Suppress <br> immediately after `hang-para' to avoid excessive
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;;; white space
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(defrequest 'br
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(lambda _
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(if hang-para?
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(hang-para #f)
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(concat (hang-para #f) "<br>\n"))))
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2023-02-15 08:13:32 -05:00
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;;; --------------------------------------------------------------------------
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;;; Examples.
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(defmacro 'EX
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(lambda (EX)
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(preform #t)))
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(defmacro 'EE
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(lambda (EE)
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(preform #f)))
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2023-02-15 08:10:58 -05:00
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;;; --------------------------------------------------------------------------
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;;; Internet URIs.
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(defmacro 'UR
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(lambda (UR uri)
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(format #f "<a href=\"~a\"><code>~a</code></a>" uri uri)))
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(defmacro 'UE
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(lambda (UE . words)
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(parse (apply spread words) #\newline)))
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2023-02-13 08:45:50 -05:00
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;;; --------------------------------------------------------------------------
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;;; Bogus or SunOS-specific stuff.
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(defmacro 'TX
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(lambda (TX name . id)
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(concat "[a manual with the abbreviation " (parse name) "]"
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(if (null? id) "" (car id)) #\newline)))
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(defmacro 'IX "")
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(defmacro 'DT "")
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(defmacro 'PD "")
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(defmacro 'UC "")
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