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; tohtml.lsp Gordon S. Novak Jr. ; 13 Jan 06
; Translate LaTex file to HTML web pages
; Make table of contents for LaTex files of slides
; Copyright (c) 2006 Gordon S. Novak Jr. and The University of Texas at Austin.
; 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, write to the Free Software
; Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
; 21 Aug 00; 07 Sep 00; 11 Sep 00; 07 Dec 00; 24 Jul 02; 25 Jul 02; 29 Jul 02
; 12 Feb 03; 28 Aug 03; 29 Aug 03; 15 Jan 04; 11 May 04; 29 Aug 05
; This program converts a LaTeX file into one or more HTML files.
; The HTML file may need some minor hand editing.
; The program produces a new file in response to \pagebreak
; and puts in links to other pages.
; I have used it to put class lecture slides on the web;
; see http://www.cs.utexas.edu/users/novak/cs375contents.html
; See the README for notes on how this is all created.
; See also the file index.lsp for making indexes.
; To use:
; Start Lisp: e.g. /p/bin/gcl
; (load "tohtml.lsp")
; To translate LaTeX to HTML web pages:
; (tohtml "myfile.tex" "myprefix" <pagenumber>)
; where "myfile.tex" = LaTeX file
; "myprefix" = file name prefix for HTML files
; <pagenumber> = number of first page if not 1
; \setcounter{page} will override this
; To make contents:
; The contents program looks for header lines, which
; in my files look something like:
; \begin{center} {\bf Lexical Analysis} \end{center}
; (makecont "myfile.tex" <pagenumber> <html>)
; where "myfile.tex" = LaTeX file
; <pagenumber> = number of first page if not 1
; <html> = t for html output, nil for LaTeX output
; 22 Aug 97; 28 Apr 00; 07 Aug 00; 08 Aug 00; 17 Aug 00; 18 Aug 00; 07 Dec 00
; 24 Jul 02; 26 Aug 03; 28 Aug 03; 11 Jan 05
; Make a contents list for a file of LaTex slides
; n is first page number: required if first page is not 1.
; html is prefix string to make html contents
(in-package 'xlib)
(defvar *line*)
(defvar *ptr*)
(defvar *lng*)
(defun makecont (filenm &optional (n 1) html)
(let (line ptr lng done depth pagebr lastbr doit (first t))
(with-open-file (infile filenm :direction :input
:if-does-not-exist nil)
(while (not (or (null infile)
(eq (setq line (read-line infile nil 'zzeofvalue))
'zzeofvalue) ))
(setq lng (length line))
(setq lastbr pagebr)
(setq pagebr
(and (>= lng 10)
(string= line "\\pagebreak" :end1 10)))
(if (and pagebr (not first)) (incf n))
(when (and (> lng 18)
(string= line "\\setcounter{page}{" :end1 18))
(setq *line* line)
(setq *lng* lng)
(setq *ptr* 18)
(setq n (parse-int)))
(when (and (> lng 20)
(string= line "\\addtocounter{page}{" :end1 20))
(setq *line* line)
(setq *lng* lng)
(setq *ptr* 20)
(setq n (+ n (parse-int))) )
(setq doit nil)
(if (and (> lng 30)
(or (string= line "\\begin{center} {\\bf " :end1 20)
(string= line "\\begin{center} {\\bf " :end1 21)))
(progn (setq doit t) (setq ptr 20)) )
(if (and (> lng 6) lastbr
(string= line "{\\bf " :end1 5))
(progn (setq doit t) (setq ptr 5)) )
(when doit
(setq first nil)
(if html
(format t "<a href=\"~A~D.html\">~D. " html n n))
(setq lng (length line))
(setq done nil)
(setq depth 0)
(if (char= (char line ptr) #\Space) (incf ptr))
(while (and (< ptr lng) (not done))
(if (char= (char line ptr) #\\)
(if (string= line "\\index" :start1 ptr :end1 (min lng (+ ptr 6)))
(progn (while (and (< ptr lng)
(not (char= (char line ptr) #\})))
(incf ptr))
(incf ptr))))
(if (char= (char line ptr) #\{)
(progn (incf depth) (princ (char line ptr)))
(if (char= (char line ptr) #\})
(if (> depth 0)
(progn (decf depth) (princ (char line ptr)))
(setq done t))
(princ (char line ptr))) )
(incf ptr))
(if html
(format t "</a><P>~%")
(format t "~60T& ~D \\\\~%" n)) ) ) ) ))
(defvar *prefix* "")
(defvar *feof* nil)
(defvar *done* nil)
(defvar *pagenumber* 0)
(defvar *firstpage* 1)
(defvar *lastpage* 999)
(defvar *center* nil)
(defvar *modestack* nil)
(defvar *verbatim* nil)
(defvar *ignore* t)
(defvar *specials* nil)
; ¬in &there4 &nsub © °
(setq *specials* '(("pm" "±") ("cdot" "·") ("cap" "&cap")
("cup" "&cup") ("vee" "&or") ("wedge" "&and") ("leq" "&le") ("geq" "&ge")
("subset" "&sub") ("subseteq" "&sube") ("supset" "&sup")
("supseteq" "&supe") ("in" "&isin") ("perp" "&perp") ("cong" "&cong")
("sim" "&tilde") ("neq" "&ne") ("mid" "|") ("leftarrow" "&larr")
("rightarrow" "&rarr") ("leftrightarrow" "&harr") ("Leftarrow" "&lArr")
("Rightarrow" "&rArr") ("Leftrightarrow" "&hArr") ("uparrow" "&uarr")
("downarrow" "&darr") ("surd" "&radic ") ("emptyset" "&empty")
("forall" "&forall") ("exists" "&exist") ("neg" "¬") ("Box" "□")
("models" "⊨") ("vdash" "⊢")
("filledBox" "■") ("sum" "&sum") ("prod" "&prod") ("int" "&int")
("infty" "&infin") ("times" "X") ("sqrt" "&radic ") ("ll" "< < ")
("alpha" "&alpha") ("beta" "&beta") ("gamma" "&gamma") ("delta" "&delta")
("epsilon" "&epsilon") ("zeta" "&zeta") ("eta" "&eta") ("theta" "&theta")
("iota" "&iota") ("kappa" "&kappa") ("lambda" "&lambda") ("mu" "&mu")
("nu" "&nu") ("xi" "&xi") ("pi" "&pi") ("rho" "&rho") ("sigma" "&sigma")
("tau" "&tau") ("upsilon" "&upsilon") ("phi" "&phi") ("chi" "&chi")
("psi" "&psi") ("omega" "&omega")
("Alpha" "&Alpha") ("Beta" "&Beta") ("Gamma" "&Gamma") ("Delta" "&Delta")
("Epsilon" "&Epsilon") ("Zeta" "&Zeta") ("Eta" "&Eta") ("Theta" "&Theta")
("Iota" "&Iota") ("Kappa" "&Kappa") ("Lambda" "&Lambda") ("Mu" "&Mu")
("Nu" "&Nu") ("Xi" "&Xi") ("Pi" "&Pi") ("Rho" "&Rho") ("Sigma" "&Sigma")
("Tau" "&Tau") ("Upsilon" "&Upsilon") ("Phi" "&Phi") ("Chi" "&Chi")
("Psi" "&Psi") ("Omega" "&Omega") ("vert" "|")
) )
; 28 Apr 00; 07 Aug 00
; Translate a file of LaTex slides to HTML
; prefix is a prefix string for output files
; pagenumber is first page number.
(defun tohtml (filenm prefix &optional (pagenumber 1))
(let (c)
(setq *pagenumber* pagenumber)
(setq *prefix* (stringify prefix))
(setq *feof* nil)
(setq *ignore* t)
(setq *center* nil)
(setq *modestack* nil)
(setq *verbatim* nil)
(with-open-file (infile filenm :direction :input :if-does-not-exist nil)
; skip initial stuff
(while (and *ignore*
(not (or (null infile)
(eq (setq *line* (read-line infile nil 'zzeofvalue))
'zzeofvalue) )))
(setq *lng* (length *line*))
(setq *ptr* 0)
(while (< *ptr* *lng*)
(setq c (char *line* *ptr*))
(incf *ptr*)
(if (and (char= c #\%) (not *verbatim*))
(flushline)
(if (char= c #\\)
(if (alpha-char-p (safe-char))
(docommand nil) ) ) ) ) )
(while (not *feof*) (dohtml infile)) ) ))
; 08 Aug 00; 18 Aug 00; 21 Aug 00; 07 Sep 00; 24 Jul 02; 25 Jul 02; 13 Jan 06
; Process input to produce one .html file
(defvar c)
(defun dohtml (infile)
(let (c)
(setq *done* nil)
(with-open-file (outfile (concatenate 'string *prefix*
(stringify *pagenumber*) ".html")
:direction :output :if-exists :supersede)
(princ "<HTML> <HEAD> <TITLE>" outfile)
(princ *prefix* outfile)
(princ " p. " outfile)
(princ (stringify *pagenumber*) outfile)
(princ "</TITLE> </HEAD>" outfile)
(terpri outfile)
(princ "<BODY>" outfile) (terpri outfile)
(terpri outfile)
(while (not (or *done* *feof*
(setq *feof*
(eq (setq *line* (read-line infile nil 'zzeofvalue))
'zzeofvalue))))
(doline outfile)
(terpri outfile) )
; *pagenumber* is too large by 1 at this point...
(if *feof* (incf *pagenumber*))
(format outfile
"<a href=\"~Acontents.html\">Contents</a>   ~%"
*prefix*)
(if (>= *pagenumber* (+ *firstpage* 11))
(format outfile "<a href=\"~A~D.html\">Page-10</a>   ~%"
*prefix* (- *pagenumber* 11)))
(if (>= *pagenumber* (+ *firstpage* 2))
(format outfile "<a href=\"~A~D.html\">Prev</a>   ~%"
*prefix* (- *pagenumber* 2)))
(if (<= *pagenumber* *lastpage*)
(format outfile "<a href=\"~A~D.html\">Next</a>   ~%"
*prefix* *pagenumber*))
(if (<= *pagenumber* (- *lastpage* 9))
(format outfile "<a href=\"~A~D.html\">Page+10</a>   ~%"
*prefix* (+ *pagenumber* 9)))
(format outfile
"<a href=\"~Aindex.html\">Index</a>   ~%" *prefix*)
(princ "</BODY></HTML>" outfile) (terpri outfile)
)
))
; 13 Jan 06
; process *line*
(defun doline (outfile)
(let ()
(setq *lng* (length *line*))
(setq *ptr* 0)
(if (and (= *lng* 0) (not *verbatim*))
(princ "<P>" outfile))
(while (< *ptr* *lng*)
(setq c (char *line* *ptr*))
(incf *ptr*)
(if (and (char= c #\%) (not *verbatim*))
(flushline)
(if (char= c #\\)
(if (alpha-char-p (setq c (safe-char)))
(docommand outfile)
(if (char= c #\\)
(progn (termline outfile) (incf *ptr*))
(if (char= c #\/)
(progn (princ " " outfile) (incf *ptr*))
(if (char= c #\[)
(progn (pushfont '$ outfile) (incf *ptr*))
(if (char= c #\])
(progn (popenv outfile) (incf *ptr*))
(progn (if *verbatim* (princ #\\ outfile))
(princ c outfile) (incf *ptr*)))))))
(if (char= c #\&)
(princ "</TD><TD>" outfile)
(if (char= c #\{)
(if *verbatim*
(princ #\{ outfile)
(pushenv nil))
(if (char= c #\})
(if *verbatim*
(princ #\} outfile)
(popenv outfile))
(if (and (char= c #\$) (not *verbatim*))
(if (eq (car *modestack*) '$)
(popenv outfile)
(pushfont '$ outfile))
(if (and (or (char= c #\^) (char= c #\_))
(eq (car *modestack*) '$))
(progn
(pushfont (if (char= c #\^) 'sup 'sub) outfile)
(searchfor #\{))
(princ (if (char= c #\>) "> "
(if (char= c #\<) "< "
c))
outfile))))))))) ))
; 24 Jul 02; 25 Jul 02; 29 Jul 02; 12 Feb 03; 28 Aug 03
(defun docommand (outfile)
(let (wordstring word subword termch done tmp c pair (saveptr (1- *ptr*)))
(setq wordstring (car (parse-word nil)))
(setq word (intern (string-upcase wordstring)))
(case word
((documentstyle pagestyle setlength hyphenpenalty sloppy
large)
(flushline))
(setcounter (searchfor #\{)
(setq subword (intern (car (parse-word t))))
(when (eq subword 'page)
(searchfor #\{)
(setq *pagenumber* (1- (parse-int))) ; assumes pagebreak
(flushline)) )
(addtocounter (searchfor #\{)
(setq subword (intern (car (parse-word t))))
(when (eq subword 'page)
(searchfor #\{)
(setq *pagenumber* (+ *pagenumber* (parse-int)))
(flushline)) )
(includegraphics (searchfor #\{) (searchforalpha)
(setq done nil)
(while (not done)
(setq tmp (parse-word nil))
(if (char= (cadr tmp) #\})
(setq done t)
(if (char= (cadr tmp) #\.)
(progn (setq done t)
(princ "<IMG src=" outfile)
(princ #\" outfile)
(princ (car tmp) outfile)
(princ ".gif" outfile)
(princ #\" outfile)
(princ ">" outfile)
(terpri outfile)
(flushline) )
(incf *ptr*)))))
(begin (searchfor #\{)
(setq subword (intern (car (parse-word t))))
(searchfor #\})
; (format t "subword = ~s~%" subword)
(case subword
(document (setq *ignore* nil))
(center (pushenv 'center))
(itemize (princ "<UL>" outfile) (terpri outfile))
(enumerate (princ "<OL>" outfile) (terpri outfile))
(verbatim (princ "<PRE>" outfile) (terpri outfile)
(setq *verbatim* t))
(tabular (dotabular outfile))
((quotation abstract quote)
(princ "<BLOCKQUOTE>" outfile) (terpri outfile))
))
(end (searchfor #\{)
(setq subword (intern (car (parse-word t))))
(searchfor #\})
(case subword
(document (setq *feof* t))
(center (popenv outfile))
(itemize (princ "</UL>" outfile) (terpri outfile))
(enumerate (princ "</OL>" outfile) (terpri outfile))
(verbatim (princ "</PRE>" outfile) (terpri outfile)
(setq *verbatim* nil))
(tabular (princ "</TABLE>" outfile) (terpri outfile)
(popenv outfile))
((quotation abstract quote)
(princ "</BLOCKQUOTE>" outfile) (terpri outfile))
))
(item (princ "<LI>" outfile))
(pagebreak (setq *done* t) (incf *pagenumber*))
((bf tt em it) (pushfont word outfile))
((title section subsection subsubsection paragraph)
(searchfor #\{)
(pushfont (cadr (assoc word '((title h1) (section h2)
(subsection h3) (subsubsection h4)
(paragraph b))))
outfile))
((vspace vspace*) (searchfor #\})
(princ "<P>" outfile) (terpri outfile))
((hspace hspace*) (searchfor #\})
(dotimes (i 8) (princ " " outfile)))
((index) (searchfor #\})) ; ignore and consume
(verb (setq termch (char *line* *ptr*))
(incf *ptr*)
(pushfont 'tt outfile)
(xferchars outfile termch)
(popenv outfile) )
((cite bibitem) (searchfor #\{)
(princ "[" outfile)
(xferchars outfile #\})
(princ "]" outfile) )
(footnote (searchfor #\{)
(princ "[" outfile)
(pushenv 'footnote))
(t (if *verbatim*
(while (< saveptr *ptr*)
(princ (char *line* saveptr) outfile)
(incf saveptr))
(if (setq pair (assoc wordstring *specials* :test #'string=))
(princ (cadr pair) outfile)) ) ) ) ))
; push a new item on the mode stack
(defun pushenv (item)
(if (and *modestack* (eq (car *modestack*) nil))
(setf (car *modestack*) item)
(push item *modestack*)))
; 24 Jul 02; 25 Jul 02
(defun popenv (outfile)
(let ((item (pop *modestack*)) new)
(setq new (cadr (assoc item '((em i) (bf b) (it i) ($ i)))))
(case item
((bf tt it em $ h1 h2 h3 h4 sub sup)
(princ "</" outfile)
(princ (or new item) outfile)
(princ ">" outfile))
(footnote (princ "]" outfile))
)
item))
(defun pushfont (word outfile)
(let ((new (cadr (assoc word '((em i) (bf b) (it i) ($ i))))))
(pushenv word)
(princ "<" outfile) (princ (or new word) outfile)
(princ ">" outfile) ))
; transfer chars to output until termch
(defun xferchars (outfile termch)
(let (done)
(while (and (< *ptr* *lng*) (not done))
(setq c (char *line* *ptr*))
(incf *ptr*)
(if (char= c termch)
(setq done t)
(princ c outfile)) ) ))
(defun dotabular (outfile)
(let ((ncols 0) done)
(searchfor #\{)
(while (and (< *ptr* *lng*) (not done))
(setq c (char *line* *ptr*))
(incf *ptr*)
(if (char= c #\})
(setq done t)
(if (or (char= c #\l) (char= c #\r) (char= c #\c))
(incf ncols))) )
(princ "<TABLE>" outfile)
(terpri outfile)
(princ "<TR><TD>" outfile)
(pushenv 'table)
))
(defun termline (outfile)
(if (eq (car *modestack*) 'table)
(progn (princ "</TD></TR>" outfile)
(terpri outfile)
(princ "<TR><TD>" outfile))
(progn (princ "<BR>" outfile) (terpri outfile) )))
(defun safe-char ()
(if (< *ptr* *lng*)
(char *line* *ptr*)
#\Space))
; Parse a word of alpha/num characters
; Returns ("word" ch) where ch is the terminating character
(defun parse-word (upper)
(let (c res)
(while (and (< *ptr* *lng*)
(or (alpha-char-p (setq c (char *line* *ptr*)))
(and res (digit-char-p c))
(char= c #\*)))
(push (if upper (char-upcase c) c) res)
(incf *ptr*))
(if res (list (coerce (nreverse res) 'string)
(and (not (alpha-char-p c)) c))) ))
(defun searchfor (ch)
(let (c)
(while (and (< *ptr* *lng*)
(setq c (char *line* *ptr*))
(not (char= ch c)))
(incf *ptr*))
(if (and c (char= ch c)) (incf *ptr*))
c))
(defun searchforalpha ()
(while (and (< *ptr* *lng*)
(not (alpha-char-p (char *line* *ptr*))))
(incf *ptr*)))
(defun flushline () (setq *lng* 0))
(defun stringify (x)
(cond ((stringp x) x)
((symbolp x) (symbol-name x))
(t (princ-to-string x))))
; Parse an integer
(defun parse-int ()
(let (c (n 0) digit found)
(while (and (< *ptr* *lng*)
(setq digit (digit-char-p
(setq c (char *line* *ptr*)))))
(setq found (or found digit))
(setq n (+ (* n 10) digit))
(incf *ptr*))
(if found n) ))
|
