/usr/share/acl2-6.3/books/xdoc/display.lisp is in acl2-books-source 6.3-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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; Copyright (C) 2009-2011 Centaur Technology
;
; Contact:
; Centaur Technology Formal Verification Group
; 7600-C N. Capital of Texas Highway, Suite 300, Austin, TX 78731, USA.
; http://www.centtech.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, write to the Free Software
; Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA.
;
; Original author: Jared Davis <jared@centtech.com>
(in-package "XDOC")
(include-book "prepare-topic")
(include-book "spellcheck")
(include-book "word-wrap")
(set-state-ok t)
(program)
; Implements the :xdoc command for printing xdoc topics to the terminal.
;
; The basic approach is:
; 1. preprocess the topic using the ordinary preprocessor (see save.lisp)
; 2. parse the resulting xml string into a list of tokens (see parse-xml.lisp)
; 3. transform the token list into reasonably nice plain-text
; 4. print the text to the terminal
;
; Loading this file does not require a ttag. However, actually using the :xdoc
; command incurs a ttag by loading the defxdoc-raw book. Of course, this is
; typically not a problem since you only use :xdoc in interactive sessions, and
; not while certifying books.
; MERGE-TEXT eats any "throwaway tags" that we can't support in a terminal,
; normalizes whitespace throughout text nodes, and merges any adjacent text
; nodes.
(defconst *throwaway-tags*
(list "b" "i" "u" "tt" "color" "sf" "a" "box" "img"
"page" "long"))
(defun merge-text (x acc codes)
;; CODES is number of open <code> tags -- we don't normalize whitespace
;; within them, but entities still get converted.
(b* (((when (atom x))
acc)
(tok1 (car x))
(rest (cdr x))
((when (opentok-p tok1))
(b* ((name (opentok-name tok1))
(codes (if (equal name "code")
(+ 1 codes)
codes)))
(cond ((member-equal name *throwaway-tags*)
(merge-text rest acc codes))
((equal name "a")
(b* ((href (cdr (assoc :href (opentok-atts tok1))))
(href (if (stringp href) href ""))
(tok (list :TEXT (str::cat "[" href " "))))
(merge-text (cons tok rest) acc codes)))
((equal name "see")
(b* ((tok (list :TEXT "[")))
(merge-text (cons tok rest) acc codes)))
((equal name "srclink")
(b* ((tok (list :TEXT "<")))
(merge-text (cons tok rest) acc codes)))
(t
(merge-text rest (cons tok1 acc) codes)))))
((when (closetok-p tok1))
(b* ((name (closetok-name tok1))
(codes (if (equal name "code")
(- 1 codes)
codes)))
(cond ((member-equal name *throwaway-tags*)
(merge-text rest acc codes))
((member-equal name '("a" "see"))
(let ((tok (list :TEXT "]")))
(merge-text (cons tok rest) acc codes)))
((equal name "srclink")
(let ((tok (list :TEXT ">")))
(merge-text (cons tok rest) acc codes)))
(t
(merge-text rest (cons tok1 acc) codes)))))
(tok1
;; Goofy. Convert any entities into ordinary text. Normalize
;; whitespace for any non-code tokens.
(cond ((entitytok-p tok1)
(list :TEXT (entitytok-as-plaintext tok1)))
((zp codes)
;; NOT in a <code> block, so normalize ws.
(list :TEXT (normalize-whitespace (texttok-text tok1))))
(t
;; Inside a <code> block, so don't touch ws.
tok1)))
((unless (texttok-p (car acc)))
(merge-text rest (cons tok1 acc) codes))
(merged-tok (list :TEXT (str::cat (texttok-text (car acc))
(texttok-text tok1)))))
(merge-text rest (cons merged-tok (cdr acc)) codes)))
(defun has-tag-above (tag open-tags)
(if (atom open-tags)
nil
(or (equal tag (opentok-name (car open-tags)))
(has-tag-above tag (cdr open-tags)))))
(defun get-indent-level (open-tags)
(b* (((when (atom open-tags))
0)
(name (opentok-name (car open-tags)))
((when (member-equal name '("h1" "h2" "h3")))
0)
((when (member-equal name '("p" "short" "h4" "h5" "index_entry")))
(+ 2 (get-indent-level (cdr open-tags))))
((when (member-equal name '("index_body")))
(+ 4 (get-indent-level (cdr open-tags))))
((when (member-equal name '("ol" "ul")))
;; Note: the bullet is put into the indented space, so in practice
;; an indent-level of 6 is more like an indent-level of 3.
(if (has-tag-above "li" open-tags)
(+ 4 (get-indent-level (cdr open-tags)))
(+ 6 (get-indent-level (cdr open-tags)))))
((when (equal name "dt"))
(+ 4 (get-indent-level (cdr open-tags))))
((when (equal name "dd"))
(+ 6 (get-indent-level (cdr open-tags))))
((when (equal name "code"))
(+ 4 (get-indent-level (cdr open-tags))))
((when (equal name "blockquote"))
(+ 4 (get-indent-level (cdr open-tags)))))
(get-indent-level (cdr open-tags))))
(defun get-list-type (open-tags)
(b* (((when (atom open-tags))
;; arbitrary default
:bulleted)
(name (opentok-name (car open-tags)))
((when (equal name "ol"))
:numbered)
((when (equal name "ul"))
:bulleted))
(get-list-type (cdr open-tags))))
(defun auto-indent (acc open-tags)
(append (make-list (get-indent-level open-tags)
:initial-element #\Space)
acc))
(defun maybe-newline (acc)
;; Make sure there is a newline at the start of acc.
(b* ((acc (remove-spaces-from-front acc))
(acc (if (or (atom acc)
(eql (car acc) #\Newline))
acc
(cons #\Newline acc))))
acc))
(defun maybe-doublespace (acc)
;; Make sure there are two newlines at the start of acc.
(b* ((acc (remove-spaces-from-front acc))
((when (atom acc))
;; Nothing at all, don't insert anything
acc)
((unless (eql (car acc) #\Newline))
;; No newlines at all -- insert two of them.
(list* #\Newline #\Newline acc))
;; At least one newline. Let's eat it and see what's further on.
(acc (remove-spaces-from-front (cdr acc)))
((when (atom acc))
;; Nothing at all, don't insert anything.
acc)
((unless (eql (car acc) #\Newline))
;; No second newline. So since we've eaten the only newline
;; there was, insert two newlines.
(list* #\Newline #\Newline acc)))
;; Found the second newline, so just restore the first one.
(cons #\Newline acc)))
(defun maybe-triplespace (acc)
;; Make sure there are three newlines at the start of acc.
(b* ((acc (remove-spaces-from-front acc))
((when (atom acc)) acc)
((unless (eql (car acc) #\Newline))
(list* #\Newline #\Newline #\Newline acc))
;; Eat newline #1
(acc (remove-spaces-from-front (cdr acc)))
((when (atom acc)) acc)
((unless (eql (car acc) #\Newline))
(list* #\Newline #\Newline #\Newline acc))
;; Eat newline #2
(acc (remove-spaces-from-front (cdr acc)))
((when (atom acc)) acc)
((unless (eql (car acc) #\Newline))
(list* #\Newline #\Newline #\Newline acc)))
(list* #\Newline #\Newline acc)))
(defun prepend-each-line (spaces x n xl acc)
(b* (((when (>= n xl))
acc)
(char-n (char x n))
((unless (eql char-n #\Newline))
(prepend-each-line spaces x (+ 1 n) xl (cons char-n acc)))
;; Else, a newline. delete trailing whitespace
(acc (remove-spaces-from-front acc))
(acc (cons #\Newline acc))
(acc (append spaces acc)))
(prepend-each-line spaces x (+ 1 n) xl acc)))
(defun tokens-to-terminal
(tokens ;; the tokens to print
wrap-col ;; the goal column for word-wrap
open-tags ;; currently open tags
list-nums ;; stack of current element numbers for list printing
acc ;; accumulator for output characters (in reverse order)
)
(b* (((when (atom tokens))
acc)
(tok1 (car tokens))
(rest (cdr tokens))
((when (opentok-p tok1))
(b* ((name (opentok-name tok1))
(open-tags (cons tok1 open-tags))
(list-nums (cond
((member-equal name '("ol" "ul"))
(cons 0 list-nums))
((equal name "li")
(cons (+ 1 (nfix (car list-nums)))
(cdr list-nums)))
(t
list-nums)))
(acc (cond
((equal name "parent")
(b* ((acc (maybe-newline acc))
(acc (str::revappend-chars "Parent topic: " acc)))
acc))
((equal name "li")
(b* ((bullet (if (eq (get-list-type open-tags) :bulleted)
"* "
(str::cat (str::natstr (nfix (car list-nums))) ". ")))
(bullet-len (length bullet))
(desired (get-indent-level open-tags))
(spaces (make-list (nfix (- desired bullet-len))
:initial-element #\Space))
(acc (maybe-newline acc))
(acc (append spaces acc))
(acc (str::revappend-chars bullet acc)))
acc))
((member-equal name '("h4" "h5" "short" "p" "li" "dt" "dd" "br"
"index_head" "index_body" "blockquote"))
;; This kind of tag has some level of indenting associated
;; with it, so make sure we indent over to the right level.
(auto-indent (maybe-newline acc) open-tags))
((member-equal name '("code"))
(auto-indent (maybe-doublespace acc) open-tags))
((member-equal name '("h1" "h2" "h3"))
(auto-indent (maybe-triplespace acc) open-tags))
((equal name "index")
(b* ((atts (opentok-atts tok1))
(title (cdr (assoc-equal "title" atts)))
(title (if (stringp title) title "??? title ???"))
(acc (maybe-triplespace acc))
(acc (str::revappend-chars title acc))
(acc (maybe-doublespace acc)))
acc))
(t
acc))))
(tokens-to-terminal rest wrap-col open-tags list-nums acc)))
((when (closetok-p tok1))
(b* ((name (closetok-name tok1))
(open-tags (cdr open-tags))
(list-nums (if (member-equal name '("ol" "ul"))
(cdr list-nums)
list-nums))
(acc (cond
((member-equal name '("h1" "h2" "h3" "h4" "h5" "p" "dl" "ul" "ol"
"short" "code" "parent" "index" "index_body"
"blockquote"))
(auto-indent (maybe-doublespace acc) open-tags))
((member-equal name '("li" "dd" "dt" "index_head"))
(auto-indent (maybe-newline acc) open-tags))
(t
acc))))
(tokens-to-terminal rest wrap-col open-tags list-nums acc)))
;; Else, it should be a text token.
;; We assume we are already indented to the right level.
;; BOZO handle <code> correctly.
(text (texttok-text tok1))
(codep (has-tag-above "code" open-tags))
(level (get-indent-level open-tags))
(acc (if codep
(b* ((len (length text))
(starts-with-newline-p (and (> len 0)
(eql (char text 0) #\Newline)))
(start-from (if starts-with-newline-p
1
0)))
(prepend-each-line (make-list level :initial-element #\Space)
text start-from (length text) acc))
(let ((wrapped (word-wrap-paragraph text level wrap-col)))
(str::revappend-chars wrapped acc)))))
(tokens-to-terminal rest wrap-col open-tags list-nums acc)))
(defun display-topic (x all-topics state)
(b* ((name (cdr (assoc :name x)))
; (- (cw "Preprocessing...~%"))
;; Use NIL as the topics-fal as a simple way to suppress autolinks...
((mv text state) (preprocess-topic x all-topics nil nil state))
; (- (cw "Text is ~x0.~%" text))
; (- (cw "Parsing xml...~%"))
((mv err tokens) (parse-xml text))
; (- (cw "Checking result...~%"))
((when err)
;; Don't consult XDOC-VERBOSE-P here. The user has explicitly asked to
;; be shown this topic but we can't show it to them. They need to be
;; told why.
(cw "Error displaying xdoc topic:~%~%")
(b* ((state (princ$ err *standard-co* state))
(state (newline *standard-co* state))
(state (newline *standard-co* state)))
state))
; (- (cw "Tokens are ~x0.~%" tokens))
; (- (cw "Merging tokens...~%"))
(merged-tokens (reverse (merge-text tokens nil 0)))
; (- (cw "Merged tokens are ~x0.~%" merged-tokens))
(terminal (str::rchars-to-string
(tokens-to-terminal merged-tokens 70 nil nil nil)))
(state (princ$ (symbol-package-name name) *standard-co* state))
(state (princ$ "::" *standard-co* state))
(state (princ$ (symbol-name name) *standard-co* state))
(state (newline *standard-co* state))
(state (princ$ terminal *standard-co* state))
(state (newline *standard-co* state)))
state))
; We previously tried to see if there was an acl2 doc topic. But now that we
; have a fast importer from acl2 documentation, we just run (import-acl2doc)
; before calling colon-xdoc-fn, so we should only need to look in the xdoc
; database.
; Until we hijacked the :doc command, I didn't feel so bad about XDOC not
; trying very hard to tell you about related topics. But now at least sort of
; try to do something. See spellcheck.lisp for the basic gist. Eventually
; we could extend this to include other search features.
;; (defun skip-through-close-long (xml-tokens)
;; (cond ((atom xml-tokens)
;; nil)
;; ((equal (car xml-tokens) '(:CLOSE "long"))
;; (cdr xml-tokens))
;; (t
;; (skip-through-close-long (cdr xml-tokens)))))
;; (defun eliminate-long (xml-tokens)
;; (cond ((atom xml-tokens)
;; nil)
;; ((and (consp (car xml-tokens))
;; (eq (first (car xml-tokens)) :OPEN)
;; (equal (second (car xml-tokens)) "long"))
;; (skip-through-close-long xml-tokens))
;; (t
;; (cons (car xml-tokens)
;; (eliminate-long (cdr xml-tokens))))))
(defun summarize-nearby-topic (x state)
(b* ((name (cdr (assoc :name x)))
(base-pkg (cdr (assoc :base-pkg x)))
(short (cdr (assoc :short x)))
; (- (cw "Preprocessing...~%"))
;; Use NIL as the topics-fal as a simple way to suppress autolinks...
((mv short-acc state) (preprocess-main short
nil ;; no directory is needed here
nil ;; no topics-fal, just keep it simple
base-pkg
state
nil ;; accumulator
))
(short (str::rchars-to-string short-acc))
; (- (cw "Text is ~x0.~%" text))
; (- (cw "Parsing xml...~%"))
((mv err tokens) (parse-xml short))
; (- (cw "Checking result...~%"))
((when err)
(cw "Error summarizing xdoc topic:~%~%")
(b* ((state (princ$ err *standard-co* state))
(state (newline *standard-co* state))
(state (newline *standard-co* state)))
state))
; (- (cw "Tokens are ~x0.~%" tokens))
; (- (cw "Merging tokens...~%"))
(merged-tokens (reverse (merge-text tokens nil 0)))
; (- (cw "Merged tokens are ~x0.~%" merged-tokens))
(terminal (str::rchars-to-string (tokens-to-terminal merged-tokens 70 nil nil nil)))
(state (princ$ " " *standard-co* state))
(state (princ$ (symbol-package-name name) *standard-co* state))
(state (princ$ "::" *standard-co* state))
(state (princ$ (symbol-name name) *standard-co* state))
(state (newline *standard-co* state))
(state (princ$ (str::prefix-lines terminal " ") *standard-co* state))
(state (newline *standard-co* state)))
state))
(defun summarize-nearby-topics (x state)
(if (atom x)
state
(pprogn (summarize-nearby-topic (car x) state)
(summarize-nearby-topics (cdr x) state))))
(defun find-topics (names all-topics)
(if (atom names)
nil
(cons (find-topic (car names) all-topics)
(find-topics (cdr names) all-topics))))
(defun all-topic-names (topics)
(if (atom topics)
nil
(cons (cdr (assoc :name (car topics)))
(all-topic-names (cdr topics)))))
(defun suggest-alternatives (name all-topics state)
(declare (xargs :guard (symbolp name)))
(b* ((topic-names (all-topic-names all-topics))
(suggestions (xdoc-autocorrect name topic-names))
(- (cw "~%Argh! No documentation for ~s0::~s1.~%" (symbol-package-name name)
(symbol-name name)))
((unless suggestions)
state)
;; Otherwise, suggestions is at most five other topics.
(- (if (eql (len suggestions) 1)
(cw "Hrmn, maybe you wanted this one:~%~%")
(cw "Hrmn, maybe you wanted one of these:~%~%")))
(suggested-topics (find-topics suggestions all-topics))
(state (summarize-nearby-topics suggested-topics state))
(state (newline *standard-co* state)))
state))
(defun colon-xdoc-fn (name all-topics state)
(declare (xargs :guard (symbolp name)))
(b* ((xdoc-entry (find-topic name all-topics))
((when (not xdoc-entry))
(let ((state (suggest-alternatives name all-topics state)))
(value :invisible)))
(state (display-topic xdoc-entry all-topics state)))
(value :invisible)))
#|
(include-book
"centaur/vl/parsetree" :dir :system)
(colon-xdoc-fn 'modulep (get-xdoc-table (w state)) state)
(colon-xdoc-fn 'module->name (get-xdoc-table (w state)) state)
(colon-xdoc-fn 'all-equal (get-xdoc-table (w state)) state)
(colon-xdoc-fn 'cons (get-xdoc-table (w state)) state)
|#
|