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sgml-mode-old.el
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;;; sgml-mode.el --- SGML- and HTML-editing modes
;;; Editted by PJW
;; Copyright (C) 1992,95,96,98,2001 Free Software Foundation, Inc.
;; Author: James Clark <[email protected]>
;; Adapted-By: ESR, Daniel Pfeiffer <[email protected]>,
;; Keywords: wp, hypermedia, comm, languages
;; 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 2, 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; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;; Commentary:
;; Configurable major mode for editing document in the SGML standard general
;; markup language. As an example contains a mode for editing the derived
;; HTML hypertext markup language.
;;; Code:
(eval-when-compile
(require 'skeleton)
(require 'outline))
(defgroup sgml nil
"SGML editing mode"
:group 'languages)
(defcustom sgml-transformation 'identity
"*Default value for `skeleton-transformation' (which see) in SGML mode."
:type 'function
:group 'sgml)
(put 'sgml-transformation 'variable-interactive
"aTransformation function: ")
(defcustom sgml-mode-hook nil
"Hook run by command `sgml-mode'.
`text-mode-hook' is run first."
:group 'sgml
:type 'hook)
;; As long as Emacs' syntax can't be complemented with predicates to context
;; sensitively confirm the syntax of characters, we have to live with this
;; kludgy kind of tradeoff.
(defvar sgml-specials '(?\")
"List of characters that have a special meaning for SGML mode.
This list is used when first loading the sgml-mode library.
The supported characters and potential disadvantages are:
?\\\" Makes \" in text start a string.
?' Makes ' in text start a string.
?- Makes -- in text start a comment.
When only one of ?\\\" or ?' are included, \"'\" or '\"', as can be found in
DTDs, start a string. To partially avoid this problem this also makes these
self insert as named entities depending on `sgml-quick-keys'.
Including ?- has the problem of affecting dashes that have nothing to do
with comments, so we normally turn it off.")
(defvar sgml-quick-keys nil
"Use <, >, &, SPC and `sgml-specials' keys \"electrically\" when non-nil.
This takes effect when first loading the sgml-mode library.")
(defvar sgml-mode-map
(let ((map (make-keymap)) ;`sparse' doesn't allow binding to charsets.
(menu-map (make-sparse-keymap "SGML")))
(define-key map "\C-c\C-i" 'sgml-tags-invisible)
(define-key map "/" 'sgml-slash)
(define-key map "\C-c\C-n" 'sgml-name-char)
(define-key map "\C-c\C-t" 'sgml-tag)
(define-key map "\C-c\C-a" 'sgml-attributes)
(define-key map "\C-c\C-b" 'sgml-skip-tag-backward)
(define-key map [?\C-c left] 'sgml-skip-tag-backward)
(define-key map "\C-c\C-f" 'sgml-skip-tag-forward)
(define-key map [?\C-c right] 'sgml-skip-tag-forward)
(define-key map "\C-c\C-d" 'sgml-delete-tag)
(define-key map "\C-c\^?" 'sgml-delete-tag)
(define-key map "\C-c?" 'sgml-tag-help)
(define-key map "\C-c8" 'sgml-name-8bit-mode)
(define-key map "\C-c\C-v" 'sgml-validate)
(if sgml-quick-keys
(progn
(define-key map "&" 'sgml-name-char)
(define-key map "<" 'sgml-tag)
(define-key map " " 'sgml-auto-attributes)
(define-key map ">" 'sgml-maybe-end-tag)
(if (memq ?\" sgml-specials)
(define-key map "\"" 'sgml-name-self))
(if (memq ?' sgml-specials)
(define-key map "'" 'sgml-name-self))))
(define-key map (vector (make-char 'latin-iso8859-1))
'sgml-maybe-name-self)
(let ((c 127)
(map (nth 1 map)))
(while (< (setq c (1+ c)) 256)
(aset map c 'sgml-maybe-name-self)))
(define-key map [menu-bar sgml] (cons "SGML" menu-map))
(define-key menu-map [sgml-validate] '("Validate" . sgml-validate))
(define-key menu-map [sgml-name-8bit-mode]
'("Toggle 8 Bit Insertion" . sgml-name-8bit-mode))
(define-key menu-map [sgml-tags-invisible]
'("Toggle Tag Visibility" . sgml-tags-invisible))
(define-key menu-map [sgml-tag-help]
'("Describe Tag" . sgml-tag-help))
(define-key menu-map [sgml-delete-tag]
'("Delete Tag" . sgml-delete-tag))
(define-key menu-map [sgml-skip-tag-forward]
'("Forward Tag" . sgml-skip-tag-forward))
(define-key menu-map [sgml-skip-tag-backward]
'("Backward Tag" . sgml-skip-tag-backward))
(define-key menu-map [sgml-attributes]
'("Insert Attributes" . sgml-attributes))
(define-key menu-map [sgml-tag] '("Insert Tag" . sgml-tag))
map)
"Keymap for SGML mode. See also `sgml-specials'.")
(defvar sgml-mode-syntax-table
(let ((table (copy-syntax-table text-mode-syntax-table)))
(modify-syntax-entry ?< "(>" table)
(modify-syntax-entry ?> ")<" table)
(if (memq ?- sgml-specials)
(modify-syntax-entry ?- "_ 1234" table))
(if (memq ?\" sgml-specials)
(modify-syntax-entry ?\" "\"\"" table))
(if (memq ?' sgml-specials)
(modify-syntax-entry ?\' "\"'" table))
table)
"Syntax table used in SGML mode. See also `sgml-specials'.")
(defcustom sgml-name-8bit-mode nil
"*When non-nil, insert non-ASCII characters as named entities."
:type 'boolean
:group 'sgml)
(defvar sgml-char-names
[nil nil nil nil nil nil nil nil
nil nil nil nil nil nil nil nil
nil nil nil nil nil nil nil nil
nil nil nil nil nil nil nil nil
"nbsp" "excl" "quot" "num" "dollar" "percnt" "amp" "apos"
"lpar" "rpar" "ast" "plus" "comma" "hyphen" "period" "sol"
nil nil nil nil nil nil nil nil
nil nil "colon" "semi" "lt" "eq" "gt" "quest"
"commat" nil nil nil nil nil nil nil
nil nil nil nil nil nil nil nil
nil nil nil nil nil nil nil nil
nil nil nil "lsqb" nil "rsqb" "uarr" "lowbar"
"lsquo" nil nil nil nil nil nil nil
nil nil nil nil nil nil nil nil
nil nil nil nil nil nil nil nil
nil nil nil "lcub" "verbar" "rcub" "tilde" nil
nil nil nil nil nil nil nil nil
nil nil nil nil nil nil nil nil
nil nil nil nil nil nil nil nil
nil nil nil nil nil nil nil nil
"nbsp" "iexcl" "cent" "pound" "curren" "yen" "brvbar" "sect"
"uml" "copy" "ordf" "laquo" "not" "shy" "reg" "macr"
"ring" "plusmn" "sup2" "sup3" "acute" "micro" "para" "middot"
"cedil" "sup1" "ordm" "raquo" "frac14" "frac12" "frac34" "iquest"
"Agrave" "Aacute" "Acirc" "Atilde" "Auml" "Aring" "AElig" "Ccedil"
"Egrave" "Eacute" "Ecirc" "Euml" "Igrave" "Iacute" "Icirc" "Iuml"
"ETH" "Ntilde" "Ograve" "Oacute" "Ocirc" "Otilde" "Ouml" nil
"Oslash" "Ugrave" "Uacute" "Ucirc" "Uuml" "Yacute" "THORN" "szlig"
"agrave" "aacute" "acirc" "atilde" "auml" "aring" "aelig" "ccedil"
"egrave" "eacute" "ecirc" "euml" "igrave" "iacute" "icirc" "iuml"
"eth" "ntilde" "ograve" "oacute" "ocirc" "otilde" "ouml" "divide"
"oslash" "ugrave" "uacute" "ucirc" "uuml" "yacute" "thorn" "yuml"]
"Vector of symbolic character names without `&' and `;'.")
(put 'sgml-table 'char-table-extra-slots 0)
(defvar sgml-char-names-table
(let ((table (make-char-table 'sgml-table))
(i 32)
elt)
(while (< i 256)
(setq elt (aref sgml-char-names i))
(if elt (aset table (make-char 'latin-iso8859-1 i) elt))
(setq i (1+ i)))
table)
"A table for mapping non-ASCII characters into SGML entity names.
Currently, only Latin-1 characters are supported.")
;; nsgmls is a free SGML parser in the SP suite available from
;; ftp.jclark.com and otherwise packaged for GNU systems.
;; Its error messages can be parsed by next-error.
;; The -s option suppresses output.
(defcustom sgml-validate-command "nsgmls -s" ; replaced old `sgmls'
"*The command to validate an SGML document.
The file name of current buffer file name will be appended to this,
separated by a space."
:type 'string
:version "21.1"
:group 'sgml)
(defvar sgml-saved-validate-command nil
"The command last used to validate in this buffer.")
;; I doubt that null end tags are used much for large elements,
;; so use a small distance here.
(defcustom sgml-slash-distance 1000
"*If non-nil, is the maximum distance to search for matching `/'."
:type '(choice (const nil) integer)
:group 'sgml)
(defconst sgml-start-tag-regex
"<[[:alnum:]]\\([-_.:[:alnum:]= \n\t]\\|\"[^\"]*\"\\|'[^']*'\\)*"
"Regular expression that matches a non-empty start tag.
Any terminating `>' or `/' is not matched.")
;; internal
(defconst sgml-font-lock-keywords-1
'(("<\\([!?][[:alnum:]][-_.:[:alnum:]]*\\)" 1 font-lock-keyword-face)
("<\\(/?[[:alnum:]][-_.:[:alnum:]]*\\)" 1 font-lock-function-name-face)
("[&%][[:alpha:]][-_.:[:alnum:]]*;?" . font-lock-variable-name-face)))
(defconst sgml-font-lock-keywords-2 ())
;; for font-lock, but must be defvar'ed after
;; sgml-font-lock-keywords-1 and sgml-font-lock-keywords-2 above
(defvar sgml-font-lock-keywords sgml-font-lock-keywords-1
"*Rules for highlighting SGML code. See also `sgml-tag-face-alist'.")
;; internal
(defvar sgml-face-tag-alist ()
"Alist of face and tag name for facemenu.")
(defvar sgml-tag-face-alist ()
"Tag names and face or list of faces to fontify with when invisible.
When `font-lock-maximum-decoration' is 1 this is always used for fontifying.
When more these are fontified together with `sgml-font-lock-keywords'.")
(defvar sgml-display-text ()
"Tag names as lowercase symbols, and display string when invisible.")
;; internal
(defvar sgml-tags-invisible nil)
(defcustom sgml-tag-alist
'(("![" ("ignore" t) ("include" t))
("!attlist")
("!doctype")
("!element")
("!entity"))
"*Alist of tag names for completing read and insertion rules.
This alist is made up as
((\"tag\" . TAGRULE)
...)
TAGRULE is a list of optionally `t' (no endtag) or `\\n' (separate endtag by
newlines) or a skeleton with `nil', `t' or `\\n' in place of the interactor
followed by an ATTRIBUTERULE (for an always present attribute) or an
attribute alist.
The attribute alist is made up as
((\"attribute\" . ATTRIBUTERULE)
...)
ATTRIBUTERULE is a list of optionally `t' (no value when no input) followed by
an optional alist of possible values."
:type '(repeat (cons (string :tag "Tag Name")
(repeat :tag "Tag Rule" sexp)))
:group 'sgml)
(defcustom sgml-tag-help
'(("!" . "Empty declaration for comment")
("![" . "Embed declarations with parser directive")
("!attlist" . "Tag attributes declaration")
("!doctype" . "Document type (DTD) declaration")
("!element" . "Tag declaration")
("!entity" . "Entity (macro) declaration"))
"*Alist of tag name and short description."
:type '(repeat (cons (string :tag "Tag Name")
(string :tag "Description")))
:group 'sgml)
(defvar v2) ; free for skeleton
(defun sgml-mode-common (sgml-tag-face-alist sgml-display-text)
"Common code for setting up `sgml-mode' and derived modes.
SGML-TAG-FACE-ALIST is used for calculating `sgml-font-lock-keywords-2'.
SGML-DISPLAY-TEXT sets up alternate text for when tags are invisible (see
varables of same name)."
(setq local-abbrev-table text-mode-abbrev-table)
(set-syntax-table sgml-mode-syntax-table)
(make-local-variable 'indent-line-function)
(make-local-variable 'paragraph-start)
(make-local-variable 'paragraph-separate)
(make-local-variable 'adaptive-fill-regexp)
(make-local-variable 'sgml-saved-validate-command)
(make-local-variable 'comment-start)
(make-local-variable 'comment-end)
(make-local-variable 'comment-indent-function)
(make-local-variable 'comment-indent-function)
(make-local-variable 'sgml-tags-invisible)
(make-local-variable 'skeleton-transformation)
(make-local-variable 'skeleton-further-elements)
(make-local-variable 'skeleton-end-hook)
(make-local-variable 'font-lock-defaults)
(make-local-variable 'sgml-font-lock-keywords-1)
(make-local-variable 'sgml-font-lock-keywords-2)
(make-local-variable 'facemenu-add-face-function)
(make-local-variable 'facemenu-end-add-face)
;;(make-local-variable 'facemenu-remove-face-function)
(and sgml-tag-face-alist
(not (assq 1 sgml-tag-face-alist))
(nconc sgml-tag-face-alist
`((1 (,(concat "<\\("
(mapconcat 'car sgml-tag-face-alist "\\|")
"\\)\\([ \t].+\\)?>\\(.+\\)</\\1>")
3 (cdr (assoc (downcase (match-string 1))
',sgml-tag-face-alist)))))))
(setq indent-line-function 'indent-relative-maybe
;; A start or end tag by itself on a line separates a paragraph.
;; This is desirable because SGML discards a newline that appears
;; immediately after a start tag or immediately before an end tag.
paragraph-separate "[ \t]*$\\|\
\[ \t]*</?\\([A-Za-z]\\([-_.:[:alnum:]= \t\n]\\|\"[^\"]*\"\\|'[^']*'\\)*\\)?>$"
paragraph-start "[ \t]*$\\|\
\[ \t]*</?\\([A-Za-z]\\([-_.:[:alnum:]]= \t\n]\\|\"[^\"]*\"\\|'[^']*'\\)*\\)?>"
adaptive-fill-regexp "[ \t]*"
comment-start "<!-- "
comment-end " -->"
comment-indent-function 'sgml-comment-indent
skeleton-transformation sgml-transformation
skeleton-further-elements '((completion-ignore-case t))
skeleton-end-hook (lambda ()
(or (eolp)
(not (or (eq v2 '\n)
(eq (car-safe v2) '\n)))
(newline-and-indent)))
sgml-font-lock-keywords-2 (append
sgml-font-lock-keywords-1
(cdr (assq 1 sgml-tag-face-alist)))
font-lock-defaults '((sgml-font-lock-keywords
sgml-font-lock-keywords-1
sgml-font-lock-keywords-2)
nil
t)
facemenu-add-face-function 'sgml-mode-facemenu-add-face-function)
(set (make-local-variable 'font-lock-syntactic-keywords)
'(("\\(<\\)! *--.*-- *\\(>\\)" (1 "!") (2 "!"))))
;; This will allow existing comments within declarations to be
;; recognized.
;; (set (make-local-variable 'comment-start-skip) "\\(?:<!\\)?--[ \t]*")
;; (set (make-local-variable 'comment-end-skip) "[ \t]*--\\([ \t\n]*>\\)?")
(dolist (pair sgml-display-text)
(put (car pair) 'before-string (cdr pair))))
(defun sgml-mode-facemenu-add-face-function (face end)
(if (setq face (cdr (assq face sgml-face-tag-alist)))
(progn
(setq face (funcall skeleton-transformation face))
(setq facemenu-end-add-face (concat "</" face ">"))
(concat "<" face ">"))
(error "Face not configured for %s mode" mode-name)))
;;;###autoload
(defun sgml-mode ()
"Major mode for editing SGML documents.
Makes > match <. Makes / blink matching /.
Keys <, &, SPC within <>, \" and ' can be electric depending on
`sgml-quick-keys'.
An argument of N to a tag-inserting command means to wrap it around
the next N words. In Transient Mark mode, when the mark is active,
N defaults to -1, which means to wrap it around the current region.
If you like upcased tags, put (setq sgml-transformation 'upcase) in
your `.emacs' file.
Use \\[sgml-validate] to validate your document with an SGML parser.
Do \\[describe-variable] sgml- SPC to see available variables.
Do \\[describe-key] on the following bindings to discover what they do.
\\{sgml-mode-map}"
(interactive)
(kill-all-local-variables)
(setq mode-name "SGML"
major-mode 'sgml-mode)
(sgml-mode-common sgml-tag-face-alist sgml-display-text)
;; Set imenu-generic-expression here, rather than in sgml-mode-common,
;; because this definition probably is not useful in HTML mode.
(make-local-variable 'imenu-generic-expression)
(setq imenu-generic-expression
"<!\\(element\\|entity\\)[ \t\n]+%?[ \t\n]*\\([A-Za-z][-A-Za-z.0-9]*\\)")
(use-local-map sgml-mode-map)
(run-hooks 'text-mode-hook 'sgml-mode-hook))
(defun sgml-comment-indent ()
(if (looking-at "--") comment-column 0))
(defun sgml-slash (arg)
"Insert `/' and display any previous matching `/'.
Two `/'s are treated as matching if the first `/' ends a net-enabling
start tag, and the second `/' is the corresponding null end tag."
(interactive "p")
(insert-char ?/ arg)
(if (> arg 0)
(let ((oldpos (point))
(blinkpos)
(level 0))
(save-excursion
(save-restriction
(if sgml-slash-distance
(narrow-to-region (max (point-min)
(- (point) sgml-slash-distance))
oldpos))
(if (and (re-search-backward sgml-start-tag-regex (point-min) t)
(eq (match-end 0) (1- oldpos)))
()
(goto-char (1- oldpos))
(while (and (not blinkpos)
(search-backward "/" (point-min) t))
(let ((tagend (save-excursion
(if (re-search-backward sgml-start-tag-regex
(point-min) t)
(match-end 0)
nil))))
(if (eq tagend (point))
(if (eq level 0)
(setq blinkpos (point))
(setq level (1- level)))
(setq level (1+ level)))))))
(if blinkpos
(progn
(goto-char blinkpos)
(if (pos-visible-in-window-p)
(sit-for 1)
(message "Matches %s"
(buffer-substring (progn
(beginning-of-line)
(point))
(1+ blinkpos))))))))))
;; Why doesn't this use the iso-cvt table or, preferably, generate the
;; inverse of the extensive table in the SGML Quail input method? -- fx
;; I guess that's moot since it only works with Latin-1 anyhow.
(defun sgml-name-char (&optional char)
"Insert a symbolic character name according to `sgml-char-names'.
Non-ASCII chars may be inserted either with the meta key, as in M-SPC for
no-break space or M-- for a soft hyphen; or via an input method or
encoded keyboard operation."
(interactive "*")
(insert ?&)
(or char
(setq char (read-quoted-char "Enter char or octal number")))
(delete-backward-char 1)
(insert char)
(undo-boundary)
(delete-backward-char 1)
(cond
((< char 256)
(insert ?&
(or (aref sgml-char-names char)
(format "#%d" char))
?\;))
((aref sgml-char-names-table char)
(insert ?& (aref sgml-char-names-table char) ?\;))
((let ((c (encode-char char 'ucs)))
(when c
(insert (format "&#%d;" c))
t)))
(t ; should be an error? -- fx
(insert char))))
(defun sgml-name-self ()
"Insert a symbolic character name according to `sgml-char-names'."
(interactive "*")
(sgml-name-char last-command-char))
(defun sgml-maybe-name-self ()
"Insert a symbolic character name according to `sgml-char-names'."
(interactive "*")
(if sgml-name-8bit-mode
(let ((mc last-command-char))
(if (< mc 256)
(setq mc (unibyte-char-to-multibyte mc)))
(or mc (setq mc last-command-char))
(sgml-name-char mc))
(self-insert-command 1)))
;; Fixme: This should sanity-check for use of Latin-1.
(defun sgml-name-8bit-mode ()
"Toggle whether to insert named entities instead of non-ASCII characters.
This only works for Latin-1 input."
(interactive)
(setq sgml-name-8bit-mode (not sgml-name-8bit-mode))
(message "sgml name entity mode is now %s"
(if sgml-name-8bit-mode "ON" "OFF")))
;; When an element of a skeleton is a string "str", it is passed
;; through skeleton-transformation and inserted. If "str" is to be
;; inserted literally, one should obtain it as the return value of a
;; function, e.g. (identity "str").
(define-skeleton sgml-tag
"Prompt for a tag and insert it, optionally with attributes.
Completion and configuration are done according to `sgml-tag-alist'.
If you like tags and attributes in uppercase do \\[set-variable]
skeleton-transformation RET upcase RET, or put this in your `.emacs':
(setq sgml-transformation 'upcase)"
(funcall skeleton-transformation
(completing-read "Tag: " sgml-tag-alist))
?< str |
(("") -1 '(undo-boundary) (identity "<")) | ; see comment above
`(("") '(setq v2 (sgml-attributes ,str t)) ?>
(if (string= "![" ,str)
(prog1 '(("") " [ " _ " ]]")
(backward-char))
(if (or (eq v2 t)
(string-match "^[/!?]" ,str))
()
(if (symbolp v2)
;; We go use `identity' to prevent skeleton from passing
;; `str' through skeleton-transformation a second time.
'(("") v2 _ v2 "</" (identity ',str) ?>)
(if (eq (car v2) t)
(cons '("") (cdr v2))
(append '(("") (car v2))
(cdr v2)
'(resume: (car v2) _ "</" (identity ',str) ?>))))))))
(autoload 'skeleton-read "skeleton")
(defun sgml-attributes (tag &optional quiet)
"When at top level of a tag, interactively insert attributes.
Completion and configuration of TAG are done according to `sgml-tag-alist'.
If QUIET, do not print a message when there are no attributes for TAG."
(interactive (list (save-excursion (sgml-beginning-of-tag t))))
(or (stringp tag) (error "Wrong context for adding attribute"))
(if tag
(let ((completion-ignore-case t)
(alist (cdr (assoc (downcase tag) sgml-tag-alist)))
car attribute i)
(if (or (symbolp (car alist))
(symbolp (car (car alist))))
(setq car (car alist)
alist (cdr alist)))
(or quiet
(message "No attributes configured."))
(if (stringp (car alist))
(progn
(insert (if (eq (preceding-char) ? ) "" ? )
(funcall skeleton-transformation (car alist)))
(sgml-value alist))
(setq i (length alist))
(while (> i 0)
(insert ? )
(insert (funcall skeleton-transformation
(setq attribute
(skeleton-read '(completing-read
"Attribute: "
alist)))))
(if (string= "" attribute)
(setq i 0)
(sgml-value (assoc (downcase attribute) alist))
(setq i (1- i))))
(if (eq (preceding-char) ? )
(delete-backward-char 1)))
car)))
(defun sgml-auto-attributes (arg)
"Self insert the character typed; at top level of tag, prompt for attributes.
With prefix argument, only self insert."
(interactive "*P")
(let ((point (point))
tag)
(if (or arg
(not sgml-tag-alist) ; no message when nothing configured
(symbolp (setq tag (save-excursion (sgml-beginning-of-tag t))))
(eq (aref tag 0) ?/))
(self-insert-command (prefix-numeric-value arg))
(sgml-attributes tag)
(setq last-command-char ? )
(or (> (point) point)
(self-insert-command 1)))))
(defun sgml-tag-help (&optional tag)
"Display description of tag TAG. If TAG is omitted, use the tag at point."
(interactive)
(or tag
(save-excursion
(if (eq (following-char) ?<)
(forward-char))
(setq tag (sgml-beginning-of-tag))))
(or (stringp tag)
(error "No tag selected"))
(setq tag (downcase tag))
(message "%s"
(or (cdr (assoc (downcase tag) sgml-tag-help))
(and (eq (aref tag 0) ?/)
(cdr (assoc (downcase (substring tag 1)) sgml-tag-help)))
"No description available")))
(defun sgml-maybe-end-tag ()
"Name self unless in position to end a tag."
(interactive)
(or (condition-case nil
(save-excursion (up-list -1))
(error
(sgml-name-self)
t))
(condition-case nil
(progn
(save-excursion (up-list 1))
(sgml-name-self))
(error (self-insert-command 1)))))
(defun sgml-skip-tag-backward (arg)
"Skip to beginning of tag or matching opening tag if present.
With prefix argument ARG, repeat this ARG times."
(interactive "p")
(while (>= arg 1)
(search-backward "<" nil t)
(if (looking-at "</\\([^ \n\t>]+\\)")
;; end tag, skip any nested pairs
(let ((case-fold-search t)
(re (concat "</?" (regexp-quote (match-string 1)))))
(while (and (re-search-backward re nil t)
(eq (char-after (1+ (point))) ?/))
(forward-char 1)
(sgml-skip-tag-backward 1))))
(setq arg (1- arg))))
(defun sgml-skip-tag-forward (arg &optional return)
"Skip to end of tag or matching closing tag if present.
With prefix argument ARG, repeat this ARG times.
Return t iff after a closing tag."
(interactive "p")
(setq return t)
(while (>= arg 1)
(skip-chars-forward "^<>")
(if (eq (following-char) ?>)
(up-list -1))
(if (looking-at "<\\([^/ \n\t>]+\\)")
;; start tag, skip any nested same pairs _and_ closing tag
(let ((case-fold-search t)
(re (concat "</?" (regexp-quote (match-string 1))))
point close)
(forward-list 1)
(setq point (point))
(while (and (re-search-forward re nil t)
(not (setq close
(eq (char-after (1+ (match-beginning 0))) ?/)))
(not (up-list -1))
(sgml-skip-tag-forward 1))
(setq close nil))
(if close
(up-list 1)
(goto-char point)
(setq return)))
(forward-list 1))
(setq arg (1- arg)))
return)
(defun sgml-delete-tag (arg)
"Delete tag on or after cursor, and matching closing or opening tag.
With prefix argument ARG, repeat this ARG times."
(interactive "p")
(while (>= arg 1)
(save-excursion
(let* (close open)
(if (looking-at "[ \t\n]*<")
;; just before tag
(if (eq (char-after (match-end 0)) ?/)
;; closing tag
(progn
(setq close (point))
(goto-char (match-end 0))))
;; on tag?
(or (save-excursion (setq close (sgml-beginning-of-tag)
close (and (stringp close)
(eq (aref close 0) ?/)
(point))))
;; not on closing tag
(let ((point (point)))
(sgml-skip-tag-backward 1)
(if (or (not (eq (following-char) ?<))
(save-excursion
(forward-list 1)
(<= (point) point)))
(error "Not on or before tag")))))
(if close
(progn
(sgml-skip-tag-backward 1)
(setq open (point))
(goto-char close)
(kill-sexp 1))
(setq open (point))
(sgml-skip-tag-forward 1)
(backward-list)
(forward-char)
(if (eq (aref (sgml-beginning-of-tag) 0) ?/)
(kill-sexp 1)))
(goto-char open)
(kill-sexp 1)))
(setq arg (1- arg))))
;; Put read-only last to enable setting this even when read-only enabled.
(or (get 'sgml-tag 'invisible)
(setplist 'sgml-tag
(append '(invisible t
intangible t
point-entered sgml-point-entered
rear-nonsticky t
read-only t)
(symbol-plist 'sgml-tag))))
(defun sgml-tags-invisible (arg)
"Toggle visibility of existing tags."
(interactive "P")
(let ((modified (buffer-modified-p))
(inhibit-read-only t)
(inhibit-modification-hooks t)
;; Avoid spurious the `file-locked' checks.
(buffer-file-name nil)
;; This is needed in case font lock gets called,
;; since it moves point and might call sgml-point-entered.
(inhibit-point-motion-hooks t)
symbol)
(unwind-protect
(save-excursion
(goto-char (point-min))
(if (setq sgml-tags-invisible
(if arg
(>= (prefix-numeric-value arg) 0)
(not sgml-tags-invisible)))
(while (re-search-forward "<\\([!/?A-Za-z][-A-Za-z0-9]*\\)"
nil t)
(setq symbol (intern-soft (downcase (match-string 1))))
(goto-char (match-beginning 0))
(and (get symbol 'before-string)
(not (overlays-at (point)))
(overlay-put (make-overlay (point)
(match-beginning 1))
'category symbol))
(put-text-property (point)
(progn (forward-list) (point))
'category 'sgml-tag))
(let ((pos (point)))
(while (< (setq pos (next-overlay-change pos)) (point-max))
(delete-overlay (car (overlays-at pos)))))
(remove-text-properties (point-min) (point-max)
'(category sgml-tag intangible t))))
(restore-buffer-modified-p modified))
(run-hooks 'sgml-tags-invisible-hook)
(message "")))
(defun sgml-point-entered (x y)
;; Show preceding or following hidden tag, depending of cursor direction.
(let ((inhibit-point-motion-hooks t))
(save-excursion
(message "Invisible tag: %s"
;; Strip properties, otherwise, the text is invisible.
(buffer-substring-no-properties
(point)
(if (or (and (> x y)
(not (eq (following-char) ?<)))
(and (< x y)
(eq (preceding-char) ?>)))
(backward-list)
(forward-list)))))))
(autoload 'compile-internal "compile")
(defun sgml-validate (command)
"Validate an SGML document.
Runs COMMAND, a shell command, in a separate process asynchronously
with output going to the buffer `*compilation*'.
You can then use the command \\[next-error] to find the next error message
and move to the line in the SGML document that caused it."
(interactive
(list (read-string "Validate command: "
(or sgml-saved-validate-command
(concat sgml-validate-command
" "
(let ((name (buffer-file-name)))
(and name
(file-name-nondirectory name))))))))
(setq sgml-saved-validate-command command)
(save-some-buffers (not compilation-ask-about-save) nil)
(compile-internal command "No more errors"))
(defun sgml-beginning-of-tag (&optional top-level)
"Skip to beginning of tag and return its name.
If this can't be done, return t."
(or (if top-level
(condition-case nil
(up-list -1)
(error t))
(>= (point)
(if (search-backward "<" nil t)
(save-excursion
(forward-list)
(point))
0)))
(if (looking-at "<[!?/]?[[A-Za-z][A-Za-z0-9]*")
(buffer-substring-no-properties
(1+ (point))
(match-end 0))
t)))
(defun sgml-value (alist)
"Interactively insert value taken from attributerule ALIST.
See `sgml-tag-alist' for info about attributerules.."
(setq alist (cdr alist))
(if (stringp (car alist))
(insert "=\"" (car alist) ?\")
(if (eq (car alist) t)
(if (cdr alist)
(progn
(insert "=\"")
(setq alist (skeleton-read '(completing-read
"Value: " (cdr alist))))
(if (string< "" alist)
(insert alist ?\")
(delete-backward-char 2))))
(insert "=\"")
(if alist
(insert (skeleton-read '(completing-read "Value: " alist))))
(insert ?\"))))
;;; HTML mode
(defcustom html-mode-hook nil
"Hook run by command `html-mode'.
`text-mode-hook' and `sgml-mode-hook' are run first."
:group 'sgml
:type 'hook
:options '(html-autoview-mode))
(defvar html-quick-keys sgml-quick-keys
"Use C-c X combinations for quick insertion of frequent tags when non-nil.
This defaults to `sgml-quick-keys'.
This takes effect when first loading the library.")
(defvar html-mode-map
(let ((map (make-sparse-keymap))
(menu-map (make-sparse-keymap "HTML")))
(set-keymap-parent map sgml-mode-map)
(define-key map "\C-c6" 'html-headline-6)
(define-key map "\C-c5" 'html-headline-5)
(define-key map "\C-c4" 'html-headline-4)
(define-key map "\C-c3" 'html-headline-3)
(define-key map "\C-c2" 'html-headline-2)
(define-key map "\C-c1" 'html-headline-1)
(define-key map "\C-c>" 'html-entity-gt)
(define-key map "\C-c<" 'html-entity-lt)
(define-key map "\C-c-" 'insert-mdash)
(define-key map "\C-cp" 'html-code-block)
(define-key map "\C-c\r" 'html-paragraph)
(define-key map "\C-cb" 'html-line)
(define-key map "\C-c\C-c-" 'html-horizontal-rule)
(define-key map "\C-c\C-co" 'html-ordered-list)
(define-key map "\C-c\C-cu" 'html-unordered-list)
(define-key map "\C-c\C-cr" 'html-radio-buttons)
(define-key map "\C-c\C-cc" 'html-checkboxes)
(define-key map "\C-c\C-cl" 'html-list-item)
(define-key map "\C-c\C-ch" 'html-href-anchor)
(define-key map "\C-c\C-cn" 'html-name-anchor)
(define-key map "\C-c\C-ci" 'html-image)
(define-key map "\C-c\C-ee" 'html-emphasis)
(define-key map "\C-c\C-eb" 'html-bold)
(define-key map "\C-c\C-et" 'html-typewriter)
(define-key map "\C-c\C-ec" 'html-code)
(if html-quick-keys
(progn
(define-key map "<" 'sgml-tag)
(define-key map ">" 'sgml-maybe-end-tag)
(define-key map "\C-c-" 'html-horizontal-rule)
(define-key map "\C-co" 'html-ordered-list)
(define-key map "\C-cu" 'html-unordered-list)
(define-key map "\C-cr" 'html-radio-buttons)
(define-key map "\C-cc" 'html-checkboxes)
(define-key map "\C-cl" 'html-list-item)
(define-key map "\C-ch" 'html-href-anchor)
(define-key map "\C-cn" 'html-name-anchor)
(define-key map "\C-ci" 'html-image)))
; (define-key map "\C-c\C-s" 'html-autoview-mode)
(define-key map "\C-cm" 'markdown-preview-file)
; (define-key map "\C-c\C-v" 'browse-url-of-buffer)
(define-key map [menu-bar html] (cons "HTML" menu-map))
(define-key menu-map [html-autoview-mode]
'("Toggle Autoviewing" . html-autoview-mode))
(define-key menu-map [browse-url-of-buffer]
'("View Buffer Contents" . browse-url-of-buffer))
(define-key menu-map [nil] '("--"))
;;(define-key menu-map "6" '("Heading 6" . html-headline-6))
;;(define-key menu-map "5" '("Heading 5" . html-headline-5))
;;(define-key menu-map "4" '("Heading 4" . html-headline-4))
(define-key menu-map "3" '("Heading 3" . html-headline-3))
(define-key menu-map "2" '("Heading 2" . html-headline-2))
(define-key menu-map "1" '("Heading 1" . html-headline-1))
(define-key menu-map "l" '("Radio Buttons" . html-radio-buttons))
(define-key menu-map "c" '("Checkboxes" . html-checkboxes))
(define-key menu-map "l" '("List Item" . html-list-item))
(define-key menu-map "u" '("Unordered List" . html-unordered-list))
(define-key menu-map "o" '("Ordered List" . html-ordered-list))
(define-key menu-map "-" '("Horizontal Rule" . html-horizontal-rule))
(define-key menu-map "\n" '("Line Break" . html-line))
(define-key menu-map "\r" '("Paragraph" . html-paragraph))
(define-key menu-map "i" '("Image" . html-image))
(define-key menu-map "h" '("Href Anchor" . html-href-anchor))
(define-key menu-map "n" '("Name Anchor" . html-name-anchor))
map)
"Keymap for commands for use in HTML mode.")
(defvar html-face-tag-alist
'((bold . "b")
(italic . "i")
(underline . "u")
(modeline . "rev"))
"Value of `sgml-face-tag-alist' for HTML mode.")
(defvar html-tag-face-alist
'(("b" . bold)
("big" . bold)
("blink" . highlight)
("cite" . italic)
("em" . italic)
("h1" bold underline)
("h2" bold-italic underline)
("h3" italic underline)
("h4" . underline)
("h5" . underline)
("h6" . underline)
("i" . italic)
("rev" . modeline)
("s" . underline)
("small" . default)
("strong" . bold)
("title" bold underline)
("tt" . default)
("u" . underline)
("var" . italic))
"Value of `sgml-tag-face-alist' for HTML mode.")
(defvar html-display-text
'((img . "[/]")
(hr . "----------")
(li . "o "))
"Value of `sgml-display-text' for HTML mode.")
;; should code exactly HTML 3 here when that is finished
(defvar html-tag-alist
(let* ((1-7 '(("1") ("2") ("3") ("4") ("5") ("6") ("7")))
(1-9 `(,@1-7 ("8") ("9")))
(align '(("align" ("left") ("center") ("right"))))
(valign '(("top") ("middle") ("bottom") ("baseline")))
(rel '(("next") ("previous") ("parent") ("subdocument") ("made")))
(href '("href" ("ftp:") ("file:") ("finger:") ("gopher:") ("http:")
("mailto:") ("news:") ("rlogin:") ("telnet:") ("tn3270:")
("wais:") ("/cgi-bin/")))
(name '("name"))
(link `(,href