yuuji@23: ;;; -*- Emacs-Lisp -*-
yuuji@23: ;;; YaTeX environment-specific functions.
yuuji@23: ;;; yatexenv.el
yuuji@56: ;;; (c ) 1994, 1995 by HIROSE Yuuji.[yuuji@ae.keio.ac.jp]
yuuji@58: ;;; Last modified Fri Feb  2 03:47:14 1996 on supra
yuuji@23: ;;; $Id$
yuuji@23: 
yuuji@23: ;;;
yuuji@23: ;; Functions for tabular environment
yuuji@23: ;;;
yuuji@23: 
yuuji@23: ;; Showing the matching column of tabular environment.
yuuji@23: (defun YaTeX-array-what-column ()
yuuji@23:   "Show matching columne title of array environment.
yuuji@23: When calling from a program, make sure to be in array/tabular environment."
yuuji@49:   (let ((p (point)) beg eot bor (nlptn "\\\\\\\\") (andptn "[^\\]&")
yuuji@49: 	(n 0) j
yuuji@23: 	(firsterr "This line might be the first row."))
yuuji@23:     (save-excursion
yuuji@23:       (YaTeX-beginning-of-environment)
yuuji@23:       (search-forward "{" p) (up-list 1)
yuuji@23:       (search-forward "{" p) (up-list 1)
yuuji@23:       ;;(re-search-forward andptn p)
yuuji@23:       (while (progn (search-forward "&" p)
yuuji@23: 		    (equal (char-after (1- (match-beginning 0))) ?\\ )))
yuuji@23:       (setq beg (1- (point)))		;beg is the point of the first &
yuuji@23:       (or (re-search-forward nlptn p t)
yuuji@23: 	  (error firsterr))
yuuji@23:       (setq eot (point))		;eot is the point of the first \\
yuuji@23:       (goto-char p)
yuuji@23:       (or (re-search-backward nlptn beg t)
yuuji@23: 	  (error firsterr))
yuuji@23:       (setq bor (point))		;bor is the beginning of this row.
yuuji@23:       (while (< (1- (point)) p)
yuuji@23: 	(if (equal (following-char) ?&)
yuuji@23: 	    (forward-char 1)
yuuji@23: 	  (re-search-forward andptn nil 1))
yuuji@23: 	(setq n (1+ n)))		;Check current column number
yuuji@23:       (goto-char p)
yuuji@23:       (cond				;Start searching \multicolumn{N}
yuuji@23:        ((> n 1)
yuuji@23: 	(re-search-backward andptn)	;Sure to find!
yuuji@23: 	(while (re-search-backward "\\\\multicolumn{\\([0-9]+\\)}" bor t)
yuuji@23: 	  (setq n (+ n (string-to-int
yuuji@23: 			(buffer-substring (match-beginning 1)
yuuji@23: 					  (match-end 1)))
yuuji@23: 		     -1)))))
yuuji@23:       (message "%s" n)
yuuji@23:       (goto-char (1- beg))
yuuji@49:       (setq j n)
yuuji@49:       (while (> j 1)
yuuji@49: 	(or (re-search-forward andptn p nil)
yuuji@49: 	    (error "This column exceeds the limit."))
yuuji@49: 	(setq j (1- j)))
yuuji@49:       (skip-chars-forward "\\s ")
yuuji@49:       (message
yuuji@49:        "This is the column(#%d) of: %s" n
yuuji@49:        (buffer-substring
yuuji@49: 	(point)
yuuji@49: 	(progn
yuuji@49: 	  (re-search-forward (concat andptn "\\|" nlptn) eot)
yuuji@49: 	  (goto-char (match-beginning 0))
yuuji@49: 	  (if (looking-at andptn)
yuuji@49: 	      (forward-char 1))
yuuji@49: 	  (skip-chars-backward "\\s ")
yuuji@49: 	  (point))))))
yuuji@23: )
yuuji@23: 
yuuji@23: ;;;###autoload
yuuji@23: (defun YaTeX-what-column ()
yuuji@23:   "Show which kind of column the current position is belonging to."
yuuji@23:   (interactive)
yuuji@23:   (cond
yuuji@23:    ((YaTeX-quick-in-environment-p '("tabular" "tabular*" "array" "array*"))
yuuji@23:     (YaTeX-array-what-column))
yuuji@23:    (t (message "Not in array/tabuar environment.")))
yuuji@23: )
yuuji@23: 
yuuji@31: (defun YaTeX-tabular-parse-format (&optional tabular*)
yuuji@31:   "Parse `tabular' format.
yuuji@31: Return the list of (No.ofCols PointEndofFormat)"
yuuji@31:   (let ((p (point)) elt boform eoform (cols 0))
yuuji@31:     (save-excursion
yuuji@31:       (if (null (YaTeX-beginning-of-environment t))
yuuji@31: 	  (error "Beginning of tabular not found."))
yuuji@31:       (skip-chars-forward "^{")
yuuji@31:       (forward-list 1)
yuuji@31:       (if tabular*
yuuji@31: 	  (progn (skip-chars-forward "^{")
yuuji@31: 		 (forward-list 1)))
yuuji@31:       (skip-chars-forward "^{" p)
yuuji@31:       (if (/= (following-char) ?\{) (error "Tabular format not found."))
yuuji@31:       (setq boform (1+ (point))
yuuji@31: 	    eoform (progn (forward-list 1) (1- (point))))
yuuji@31:       (if (> eoform p) (error "Non-terminated tabular format."))
yuuji@31:       (goto-char boform)
yuuji@31:       (while (< (point) eoform)
yuuji@31: 	(setq elt (following-char))
yuuji@31: 	(cond
yuuji@31: 	 ((string-match (char-to-string elt) "clr") ;normal indicators.
yuuji@31: 	  (setq cols (1+ cols))
yuuji@31: 	  (forward-char 1))
yuuji@31: 	 ((equal elt ?|)		;vertical
yuuji@31: 	  (forward-char 1))
yuuji@31: 	 ((string-match (char-to-string elt) "p@") ;p or @ expression
yuuji@31: 	  (setq cols (+ (if (eq elt ?p) 1 0) cols))
yuuji@31: 	  (skip-chars-forward "^{" p)
yuuji@56: 	  (forward-list 1))
yuuji@56: 	 (t (forward-char 1))		;unknown char
yuuji@56: 	 ))
yuuji@31:       (list cols (1+ eoform))))
yuuji@31: )
yuuji@31: ;; Insert &
yuuji@31: (defun YaTeX-intelligent-newline-tabular (&optional tabular*)
yuuji@31:   "Parse current tabular format and insert that many `&'s."
yuuji@31:   (let*((p (point)) (format (YaTeX-tabular-parse-format tabular*))
yuuji@31: 	(cols (car format)) (beg (car (cdr format)))
yuuji@31: 	space hline)
yuuji@58:     (cond
yuuji@58:      ((search-backward "&" beg t)
yuuji@58:       (goto-char p)
yuuji@58:       (setq hline (search-backward "\\hline" beg t))
yuuji@58:       (setq space (if (search-backward "\t&" beg t) "\t" " "))
yuuji@58:       (goto-char p))
yuuji@58:      (t ;;(insert "\\hline\n")
yuuji@58: 	(setq space " ")))
yuuji@31:     (goto-char p)
yuuji@31:     (while (> (1- cols) 0)
yuuji@31:       (insert "&" space)
yuuji@31:       (setq cols (1- cols)))
yuuji@31:     (insert "\\\\")
yuuji@31:     (if hline (insert " \\hline"))
yuuji@58:     (goto-char p)
yuuji@58:     (YaTeX-indent-line)
yuuji@58: )
yuuji@31: )
yuuji@31: 
yuuji@31: (defun YaTeX-intelligent-newline-tabular* ()
yuuji@31:   "Parse current tabular* format and insert that many `&'s."
yuuji@31:   (YaTeX-intelligent-newline-tabular t)
yuuji@31: )
yuuji@31: 
yuuji@31: (fset 'YaTeX-intelligent-newline-array 'YaTeX-intelligent-newline-tabular)
yuuji@31: 
yuuji@23: ;;;
yuuji@23: ;; Functions for tabbing environment
yuuji@23: ;;;
yuuji@23: (defun YaTeX-intelligent-newline-tabbing ()
yuuji@23:   "Check the number of \\= in the first line and insert that many \\>."
yuuji@23:   (let ((p (point)) begenv tabcount)
yuuji@23:     (save-excursion
yuuji@23:       (YaTeX-beginning-of-environment)
yuuji@23:       (setq begenv (point-end-of-line))
yuuji@23:       (if (YaTeX-search-active-forward "\\\\" YaTeX-comment-prefix p t)
yuuji@23: 	  (progn
yuuji@23: 	    (setq tabcount 0)
yuuji@23: 	    (while (> (point) begenv)
yuuji@23: 	      (if (search-backward "\\=" begenv 1)
yuuji@23: 		  (setq tabcount (1+ tabcount)))))))
yuuji@23:     (YaTeX-indent-line)
yuuji@23:     (if tabcount
yuuji@23: 	(progn
yuuji@23: 	  (save-excursion
yuuji@23: 	    (while (> tabcount 0)
yuuji@23: 	      (insert "\\>\t")
yuuji@23: 	      (setq tabcount (1- tabcount))))
yuuji@23: 	  (forward-char 2))
yuuji@58:       (insert "\\= \\\\")
yuuji@58:       (forward-char -5)))
yuuji@23: )
yuuji@23: 
yuuji@23: ;;;
yuuji@23: ;; Functions for itemize/enumerate/list environments
yuuji@23: ;;;
yuuji@23: 
yuuji@23: (defun YaTeX-intelligent-newline-itemize ()
yuuji@23:   "Insert '\\item '."
yuuji@58:   (insert "\\item ")
yuuji@53:   (YaTeX-indent-line)
yuuji@23: )
yuuji@23: (fset 'YaTeX-intelligent-newline-enumerate 'YaTeX-intelligent-newline-itemize)
yuuji@23: (fset 'YaTeX-intelligent-newline-list 'YaTeX-intelligent-newline-itemize)
yuuji@23: 
yuuji@23: (defun YaTeX-intelligent-newline-description ()
yuuji@23:   (insert "\\item[] ")
yuuji@23:   (forward-char -2)
yuuji@53:   (YaTeX-indent-line)
yuuji@23: )
yuuji@23: 
yuuji@23: 
yuuji@23: ;;;
yuuji@23: ;; Intelligent newline
yuuji@23: ;;;
yuuji@23: ;;;###autoload
yuuji@23: (defun YaTeX-intelligent-newline (arg)
yuuji@23:   "Insert newline and environment-specific entry.
yuuji@23: `\\item'	for some itemizing environment,
yuuji@23: `\\> \\> \\'	for tabbing environemnt,
yuuji@23: `& & \\ \hline'	for tabular environment."
yuuji@23:   (interactive "P")
yuuji@23:   (let*((env (YaTeX-inner-environment))
yuuji@23: 	func)
yuuji@23:     (if arg (setq env (YaTeX-read-environment "For what environment? ")))
yuuji@23:     (setq func (intern-soft (concat "YaTeX-intelligent-newline-" env)))
yuuji@23:     (end-of-line)
yuuji@23:     (newline)
yuuji@58:     (undo-boundary)
yuuji@23:     (if (and env func (fboundp func))
yuuji@23: 	(funcall func)))
yuuji@23: )
yuuji@53: 
yuuji@53: ;;;
yuuji@53: ;; Environment-specific line indenting functions
yuuji@53: ;;;
yuuji@53: ;;;###autoload
yuuji@53: (defun YaTeX-indent-line-equation ()
yuuji@53:   "Indent a line in equation family."
yuuji@53:   (let ((p (point)) (l-r 0) right-p peol depth (mp YaTeX-environment-indent))
yuuji@53:     (if (save-excursion
yuuji@53: 	  (beginning-of-line)
yuuji@53: 	  (skip-chars-forward " \t")
yuuji@53: 	  (looking-at "\\\\right\\b"))
yuuji@53: 	(progn (YaTeX-reindent
yuuji@53: 		(save-excursion (YaTeX-goto-corresponding-leftright)
yuuji@53: 				(current-column))))
yuuji@53:       (save-excursion
yuuji@53: 	(forward-line -1)
yuuji@53: 	(while (and (not (bobp)) (YaTeX-on-comment-p))
yuuji@53: 	  (forward-line -1))
yuuji@53: 	;;(beginning-of-line)	;must be unnecessary
yuuji@53: 	(skip-chars-forward " \t")
yuuji@53: 	(if (eolp) (error "Math-environment can't have a null line!!"))
yuuji@53: 	(setq depth (current-column)
yuuji@53: 	      peol (point-end-of-line))
yuuji@53: 	(while (re-search-forward
yuuji@53: 		"\\\\\\(\\(left\\)\\|\\(right\\)\\)\\b" peol t)
yuuji@53: 	  (setq l-r (+ l-r (if (match-beginning 2) 1 -1))))
yuuji@53: 	(cond
yuuji@53: 	 ((progn (beginning-of-line)
yuuji@53: 		 (re-search-forward "\\\\\\\\\\s *$" (point-end-of-line) t))
yuuji@53: 	  ;;If previous line has `\\', this indentation is always normal.
yuuji@53: 	  (setq depth (+ (YaTeX-current-indentation) mp)))
yuuji@53: 	 ((> l-r 0)
yuuji@53: 	  (beginning-of-line)
yuuji@53: 	  (search-forward "\\left" peol)
yuuji@53: 	  (goto-char (1+ (match-beginning 0)))
yuuji@53: 	  (setq depth (current-column)))
yuuji@53: 	 ((< l-r 0)
yuuji@53: 	  (goto-char (match-beginning 0))	;should be \right
yuuji@53: 	  (YaTeX-goto-corresponding-leftright)
yuuji@53: 	  (beginning-of-line)
yuuji@53: 	  (skip-chars-forward " \t")
yuuji@53: 	  (setq depth (+ (current-column) mp))) ;+mp is good?
yuuji@53: 	 (t				;if \left - \right = 0
yuuji@53: 	  (cond
yuuji@53: 	   ((re-search-forward "\\\\\\\\\\s *$" peol t)
yuuji@53: 	    (setq depth (+ (YaTeX-current-indentation) mp)))
yuuji@53: 	   ((re-search-forward "\\\\end{" peol t)
yuuji@53: 	    nil)			;same indentation as previous line's
yuuji@53: 	   ((re-search-forward "\\\\begin{" peol t)
yuuji@53: 	    (setq depth (+ depth mp)))
yuuji@53: 	   (t
yuuji@53: 	    (or (bobp) (forward-line -1))
yuuji@53: 	    (cond
yuuji@53: 	     ((re-search-forward
yuuji@53: 	       "\\\\\\\\\\s *$\\|\\\\begin{" (point-end-of-line) t)
yuuji@53: 	      (setq depth (+ depth mp)))
yuuji@53: 	     )))))
yuuji@53: 	(goto-char p))
yuuji@53:       (YaTeX-reindent depth))))
yuuji@53: 
yuuji@53: ;;;###autoload
yuuji@53: (defun YaTeX-goto-corresponding-leftright ()
yuuji@53:   "Go to corresponding \left or \right.
yuuji@53: Note that this function assumes the corresponding \left\right
yuuji@53: is on another line."
yuuji@53:   (let ((YaTeX-struct-begin "\\left%1")
yuuji@53: 	(YaTeX-struct-end "\\right%1")
yuuji@53: 	(YaTeX-struct-name-regexp "[][(){}.|]"))
yuuji@53:     (YaTeX-goto-corresponding-environment t)))
yuuji@53: 
yuuji@53: ;;;
yuuji@53: ;; Functions for formatting region being enclosed with environment
yuuji@53: ;;;
yuuji@53: ; These functions must take two argument; region-beginning, region-end.
yuuji@53: 
yuuji@53: (defun YaTeX-enclose-equation (beg end)
yuuji@53:   (goto-char beg)
yuuji@53:   (save-restriction
yuuji@53:     (let (m0 bsl)
yuuji@53:       (narrow-to-region beg end)
yuuji@53:       (while (YaTeX-re-search-active-forward
yuuji@53: 	      "\\(\\$\\)" YaTeX-comment-prefix nil t)
yuuji@53: 	(goto-char (setq m0 (match-beginning 0)))
yuuji@53: 	(setq bsl 0)
yuuji@53: 	(if (and (not (bobp)) (= (char-after (1- (point))) ?\\ ))
yuuji@53: 	    (while (progn (forward-char -1) (= (char-after (point)) ?\\ ))
yuuji@53: 	      (setq bsl (1+ bsl))))
yuuji@53: 	(goto-char m0)
yuuji@53: 	(if (= 0 (% bsl 2))
yuuji@53: 	    (delete-char 1)
yuuji@53: 	  (forward-char 1))))))
yuuji@53: 
yuuji@53: (fset 'YaTeX-enclose-eqnarray 'YaTeX-enclose-equation)
yuuji@53: (fset 'YaTeX-enclose-eqnarray* 'YaTeX-enclose-equation)
yuuji@53: 
yuuji@53: (defun YaTeX-enclose-verbatim (beg end)) ;do nothing when enclose verbatim
yuuji@53: (fset 'YaTeX-enclose-verbatim* 'YaTeX-enclose-verbatim)
yuuji@53: 
yuuji@53: (provide 'yatexenv)