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;;; rng-maint.el --- commands for RELAX NG maintainers -*- lexical-binding:t -*-
;; Copyright (C) 2003, 2007-2021 Free Software Foundation, Inc.
;; Author: James Clark
;; Keywords: wp, hypermedia, languages, XML, RelaxNG
;; This file is part of GNU Emacs.
;; GNU Emacs 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 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs 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 GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;;; Code:
(require 'xmltok)
(require 'nxml-mode)
(require 'texnfo-upd)
(defvar rng-dir (file-name-directory load-file-name))
;;; Conversion from XML to texinfo.
;; This is all a hack and is just enough to make the conversion work.
;; It's not intended for public use.
(defvar rng-manual-base "nxml-mode")
(defvar rng-manual-xml (concat rng-manual-base ".xml"))
(defvar rng-manual-texi (concat rng-manual-base ".texi"))
(defvar rng-manual-info (concat rng-manual-base ".info"))
(defun rng-format-manual ()
"Create manual.texi from manual.xml."
(interactive)
(let ((xml-buf (find-file-noselect (expand-file-name rng-manual-xml
rng-dir)))
(texi-buf (find-file-noselect (expand-file-name rng-manual-texi
rng-dir))))
(with-current-buffer texi-buf
(erase-buffer)
(let ((standard-output texi-buf))
(princ (format "\\input texinfo @c -*- texinfo -*-\n\
@c %%**start of header\n\
@setfilename %s\n\
@settitle \n\
@c %%**end of header\n" rng-manual-info))
(set-buffer xml-buf)
(goto-char (point-min))
(xmltok-save
(xmltok-forward-prolog)
(rng-process-tokens))
(princ "\n@bye\n"))
(set-buffer texi-buf)
(rng-manual-fixup)
(texinfo-insert-node-lines (point-min) (point-max) t)
(texinfo-all-menus-update)
(save-buffer))))
(defun rng-manual-fixup ()
(goto-char (point-min))
(search-forward "@top ")
(let ((pos (point)))
(search-forward "\n")
(let ((title (buffer-substring-no-properties pos (1- (point)))))
(goto-char (point-min))
(search-forward "@settitle ")
(insert title)
(search-forward "@node")
(goto-char (match-beginning 0))
(insert "@dircategory Emacs\n"
"@direntry\n* "
title
": ("
rng-manual-info
").\n@end direntry\n\n"))))
(defvar rng-manual-inline-elements '(kbd key samp code var emph uref point))
(defun rng-process-tokens ()
(let ((section-depth 0)
;; stack of per-element space treatment
;; t means keep, nil means discard, fill means no blank lines
(keep-space-stack (list nil))
(ignore-following-newline nil)
(want-blank-line nil)
name startp endp data keep-space-for-children)
(while (xmltok-forward)
(cond ((memq xmltok-type '(start-tag empty-element end-tag))
(setq startp (memq xmltok-type '(start-tag empty-element)))
(setq endp (memq xmltok-type '(end-tag empty-element)))
(setq name (intern (if startp
(xmltok-start-tag-qname)
(xmltok-end-tag-qname))))
(setq keep-space-for-children nil)
(setq ignore-following-newline nil)
(cond ((memq name rng-manual-inline-elements)
(when startp
(when want-blank-line
(rng-manual-output-force-blank-line)
(when (eq want-blank-line 'noindent)
(princ "@noindent\n"))
(setq want-blank-line nil))
(setq keep-space-for-children t)
(princ (format "@%s{" name)))
(when endp (princ "}")))
((eq name 'ulist)
(when startp
(rng-manual-output-force-blank-line)
(setq want-blank-line nil)
(princ "@itemize @bullet\n"))
(when endp
(rng-manual-output-force-new-line)
(setq want-blank-line 'noindent)
(princ "@end itemize\n")))
((eq name 'item)
(rng-manual-output-force-new-line)
(setq want-blank-line endp)
(when startp (princ "@item\n")))
((memq name '(example display))
(when startp
(setq ignore-following-newline t)
(rng-manual-output-force-blank-line)
(setq want-blank-line nil)
(setq keep-space-for-children t)
(princ (format "@%s\n" name)))
(when endp
(rng-manual-output-force-new-line)
(setq want-blank-line 'noindent)
(princ (format "@end %s\n" name))))
((eq name 'para)
(rng-manual-output-force-new-line)
(when startp
(when want-blank-line
(setq want-blank-line t))
(setq keep-space-for-children 'fill))
(when endp (setq want-blank-line t)))
((eq name 'section)
(when startp
(rng-manual-output-force-blank-line)
(when (eq section-depth 0)
(princ "@node Top\n"))
(princ "@")
(princ (nth section-depth '(top
chapter
section
subsection
subsubsection)))
(princ " ")
(setq want-blank-line nil)
(setq section-depth (1+ section-depth)))
(when endp
(rng-manual-output-force-new-line)
(setq want-blank-line nil)
(setq section-depth (1- section-depth))))
((eq name 'title)
(when startp
(setq keep-space-for-children 'fill))
(when endp
(setq want-blank-line t)
(princ "\n"))))
(when startp
(setq keep-space-stack (cons keep-space-for-children
keep-space-stack)))
(when endp
(setq keep-space-stack (cdr keep-space-stack))))
((memq xmltok-type '(data
space
char-ref
entity-ref
cdata-section))
(setq data nil)
(cond ((memq xmltok-type '(data space))
(setq data (buffer-substring-no-properties xmltok-start
(point))))
((and (memq xmltok-type '(char-ref entity-ref))
xmltok-replacement)
(setq data xmltok-replacement))
((eq xmltok-type 'cdata-section)
(setq data
(buffer-substring-no-properties (+ xmltok-start 9)
(- (point) 3)))))
(when (and data (car keep-space-stack))
(setq data (replace-regexp-in-string "[@{}]"
"@\\&"
data
t))
(when ignore-following-newline
(setq data (replace-regexp-in-string "\\`\n" "" data t)))
(setq ignore-following-newline nil)
;; (when (eq (car keep-space-stack) 'fill)
;; (setq data (replace-regexp-in-string "\n" " " data t)))
(when (eq want-blank-line 'noindent)
(setq data (replace-regexp-in-string "\\`\n*" "" data t)))
(when (> (length data) 0)
(when want-blank-line
(rng-manual-output-force-blank-line)
(when (eq want-blank-line 'noindent)
(princ "@noindent\n"))
(setq want-blank-line nil))
(princ data))))
))))
(defun rng-manual-output-force-new-line ()
(with-current-buffer standard-output
(unless (eq (char-before) ?\n)
(insert ?\n))))
(defun rng-manual-output-force-blank-line ()
(with-current-buffer standard-output
(if (eq (char-before) ?\n)
(unless (eq (char-before (1- (point))) ?\n)
(insert ?\n))
(insert "\n\n"))))
;;; Timing
(defun rng-time-function (function &rest args)
(let* ((start (current-time))
(val (apply function args)))
(message "%s ran in %g seconds"
function (float-time (time-since start)))
val))
(defun rng-time-tokenize-buffer ()
(interactive)
(rng-time-function 'rng-tokenize-buffer))
(defun rng-tokenize-buffer ()
(save-excursion
(goto-char (point-min))
(xmltok-save
(xmltok-forward-prolog)
(while (xmltok-forward)))))
(defun rng-time-validate-buffer ()
(interactive)
(rng-time-function 'rng-validate-buffer))
(defvar rng-error-count)
(defvar rng-validate-up-to-date-end)
(declare-function rng-clear-cached-state "rng-valid" (start end))
(declare-function rng-clear-overlays "rng-valid" (beg end))
(declare-function rng-clear-conditional-region "rng-valid" ())
(declare-function rng-do-some-validation "rng-valid"
(&optional continue-p-function))
(defun rng-validate-buffer ()
(save-restriction
(widen)
(with-silent-modifications
(rng-clear-cached-state (point-min) (point-max)))
;; 1+ to clear empty overlays at (point-max)
(rng-clear-overlays (point-min) (1+ (point-max))))
(setq rng-validate-up-to-date-end 1)
(rng-clear-conditional-region)
(setq rng-error-count 0)
(while (rng-do-some-validation
(lambda () t))))
;;; rng-maint.el ends here
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