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| -rw-r--r-- | lisp/array.el | 957 | ||||
| -rw-r--r-- | lisp/autoinsert.el | 92 |
2 files changed, 1049 insertions, 0 deletions
diff --git a/lisp/array.el b/lisp/array.el new file mode 100644 index 00000000000..d58d558188e --- /dev/null +++ b/lisp/array.el @@ -0,0 +1,957 @@ +;;; Array editing commands for Gnu Emacs +;;; Written by dmb%morgoth@harvard.harvard.edu (address is old) +;;; (David M. Brown at Goldberg-Zoino & Associates, Inc.) +;;; Thanks to cph@kleph.ai.mit.edu for assistance + +;; Copyright (C) 1987 Free Software Foundation, Inc. + +;; 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 1, 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, 675 Mass Ave, Cambridge, MA 02139, USA. + +;;; To do: +;;; Smooth initialization process by grokking local variables list +;;; at end of buffer or parsing buffer using whitespace as delimiters. +;;; Make 'array-copy-column-right faster. + + + +;;; Internal information functions. + +(defun array-cursor-in-array-range () + "Returns t if the cursor is in a valid array cell. +Its ok to be on a row number line." + (let ((columns-last-line (% max-column columns-per-line))) + ;; Requires buffer-line and buffer-column to be current. + (not (or + ;; The cursor is too far to the right. + (>= buffer-column line-length) + ;; The cursor is below the last row. + (>= buffer-line (* lines-per-row max-row)) + ;; The cursor is on the last line of the row, the line is smaller + ;; than the others, and the cursor is after the last array column + ;; on the line. + (and (zerop (% (1+ buffer-line) lines-per-row)) + (not (zerop columns-last-line)) + (>= buffer-column (* columns-last-line field-width))))))) + +(defun array-current-row () + "Return the array row of the field in which the cursor is located." + ;; Requires buffer-line and buffer-column to be current. + (and (array-cursor-in-array-range) + (1+ (floor buffer-line lines-per-row)))) + +(defun array-current-column () + "Return the array column of the field in which the cursor is located." + ;; Requires buffer-line and buffer-column to be current. + (and (array-cursor-in-array-range) + ;; It's not okay to be on a row number line. + (not (and rows-numbered + (zerop (% buffer-line lines-per-row)))) + (+ + ;; Array columns due to line differences. + (* columns-per-line + (if rows-numbered + (1- (% buffer-line lines-per-row)) + (% buffer-line lines-per-row))) + ;; Array columns on the current line. + (ceiling (1+ buffer-column) field-width)))) + +(defun array-update-array-position (&optional a-row a-column) + "Set `array-row' and `array-column' to their current values or +to the optional arguments A-ROW and A-COLUMN." + ;; Requires that buffer-line and buffer-column be current. + (setq array-row (or a-row (array-current-row)) + array-column (or a-column (array-current-column)))) + +(defun array-update-buffer-position () + "Set buffer-line and buffer-column to their current values." + (setq buffer-line (current-line) + buffer-column (current-column))) + + + +;;; Information commands. + +(defun array-what-position () + "Display the row and column in which the cursor is positioned." + (interactive) + (let ((buffer-line (current-line)) + (buffer-column (current-column))) + (message (format "Array row: %s Array column: %s" + (prin1-to-string (array-current-row)) + (prin1-to-string (array-current-column)))))) + +(defun array-display-local-variables () + "Display the current state of the local variables in the minibuffer." + (interactive) + (let ((buf (buffer-name (current-buffer)))) + (with-output-to-temp-buffer "*Local Variables*" + (buffer-disable-undo standard-output) + (terpri) + (princ (format " Buffer: %s\n\n" buf)) + (princ (format " max-row: %s\n" + (prin1-to-string max-row))) + (princ (format " max-column: %s\n" + (prin1-to-string max-column))) + (princ (format " columns-per-line: %s\n" + (prin1-to-string columns-per-line))) + (princ (format " field-width: %s\n" + (prin1-to-string field-width))) + (princ (format " rows-numbered: %s\n" + (prin1-to-string rows-numbered))) + (princ (format " lines-per-row: %s\n" + (prin1-to-string lines-per-row))) + (princ (format " line-length: %s\n" + (prin1-to-string line-length)))))) + + + +;;; Internal movement functions. + +(defun array-beginning-of-field (&optional go-there) + "Return the column of the beginning of the current field. +Optional argument GO-THERE, if non-nil, means go there too." + ;; Requires that buffer-column be current. + (let ((goal-column (- buffer-column (% buffer-column field-width)))) + (if go-there + (move-to-column-untabify goal-column) + goal-column))) + +(defun array-end-of-field (&optional go-there) + "Return the column of the end of the current array field. +If optional argument GO-THERE is non-nil, go there too." + ;; Requires that buffer-column be current. + (let ((goal-column (+ (- buffer-column (% buffer-column field-width)) + field-width))) + (if go-there + (move-to-column-untabify goal-column) + goal-column))) + +(defun array-move-to-cell (a-row a-column) + "Move to array row A-ROW and array column A-COLUMN. +Leave point at the beginning of the field and return the new buffer column." + (let ((goal-line (+ (* lines-per-row (1- a-row)) + (if rows-numbered 1 0) + (floor (1- a-column) columns-per-line))) + (goal-column (* field-width (% (1- a-column) columns-per-line)))) + (goto-char (point-min)) + (forward-line goal-line) + (move-to-column-untabify goal-column))) + +(defun array-move-to-row (a-row) + "Move to array row A-ROW preserving the current array column. +Leave point at the beginning of the field and return the new array row." + ;; Requires that buffer-line and buffer-column be current. + (let ((goal-line (+ (* lines-per-row (1- a-row)) + (% buffer-line lines-per-row))) + (goal-column (- buffer-column (% buffer-column field-width)))) + (forward-line (- goal-line buffer-line)) + (move-to-column-untabify goal-column) + a-row)) + +(defun array-move-to-column (a-column) + "Move to array column A-COLUMN preserving the current array row. +Leave point at the beginning of the field and return the new array column." + ;; Requires that buffer-line and buffer-column be current. + (let ((goal-line (+ (- buffer-line (% buffer-line lines-per-row)) + (if rows-numbered 1 0) + (floor (1- a-column) columns-per-line))) + (goal-column (* field-width (% (1- a-column) columns-per-line)))) + (forward-line (- goal-line buffer-line)) + (move-to-column-untabify goal-column) + a-column)) + +(defun array-move-one-row (sign) + "Move one array row in direction SIGN (1 or -1). +Leave point at the beginning of the field and return the new array row. +If requested to move beyond the array bounds, signal an error." + ;; Requires that buffer-line and buffer-column be current. + (let ((goal-column (array-beginning-of-field)) + (array-row (or (array-current-row) + (error "Cursor is not in a valid array cell.")))) + (cond ((and (= array-row max-row) (= sign 1)) + (error "End of array.")) + ((and (= array-row 1) (= sign -1)) + (error "Beginning of array.")) + (t + (progn + (forward-line (* sign lines-per-row)) + (move-to-column-untabify goal-column) + (+ array-row sign)))))) + +(defun array-move-one-column (sign) + "Move one array column in direction SIGN (1 or -1). +Leave point at the beginning of the field and return the new array column. +If requested to move beyond the array bounds, signal an error." + ;; Requires that buffer-line and buffer-column be current. + (let ((array-column (or (array-current-column) + (error "Cursor is not in a valid array cell.")))) + (cond ((and (= array-column max-column) (= sign 1)) + (error "End of array.")) + ((and (= array-column 1) (= sign -1)) + (error "Beginning of array.")) + (t + (cond + ;; Going backward from first column on the line. + ((and (= sign -1) (= 1 (% array-column columns-per-line))) + (forward-line -1) + (move-to-column-untabify + (* field-width (1- columns-per-line)))) + ;; Going forward from last column on the line. + ((and (= sign 1) (zerop (% array-column columns-per-line))) + (forward-line 1)) + ;; Somewhere in the middle of the line. + (t + (move-to-column-untabify (+ (array-beginning-of-field) + (* field-width sign))))) + (+ array-column sign))))) + +(defun array-normalize-cursor () + "Move the cursor to the first non-whitespace character in the field and, +if necessary, scroll horizontally to keep the cursor in view." + ;; Assumes point is at the beginning of the field. + (let ((buffer-column (current-column))) + (skip-chars-forward " \t" + (1- (save-excursion (array-end-of-field t) (point)))) + (array-maybe-scroll-horizontally))) + +(defun array-maybe-scroll-horizontally () + "If necessary, scroll horizontally to keep the cursor in view." + ;; This is only called from array-normalize-cursor so + ;; buffer-column will always be current. + (let ((w-hscroll (window-hscroll)) + (w-width (window-width))) + (cond + ((and (>= buffer-column w-hscroll) + (<= buffer-column (+ w-hscroll w-width))) + ;; It's already visible. Do nothing. + nil) + ((> buffer-column (+ w-hscroll w-width)) + ;; It's to the right. Scroll left. + (scroll-left (- (- buffer-column w-hscroll) + (/ w-width 2)))) + (t + ;; It's to the left. Scroll right. + (scroll-right (+ (- w-hscroll buffer-column) + (/ w-width 2))))))) + + + +;;; Movement commands. + +(defun array-next-row (&optional arg) + "Move down one array row, staying in the current array column. +If optional ARG is given, move down ARG array rows." + (interactive "p") + (let ((buffer-line (current-line)) + (buffer-column (current-column))) + (if (= (abs arg) 1) + (array-move-one-row arg) + (array-move-to-row + (limit-index (+ (or (array-current-row) + (error "Cursor is not in an array cell.")) + arg) + max-row)))) + (array-normalize-cursor)) + +(defun array-previous-row (&optional arg) + "Move up one array row, staying in the current array column. +If optional ARG is given, move up ARG array rows." + (interactive "p") + (array-next-row (- arg))) + +(defun array-forward-column (&optional arg) + "Move forward one field, staying in the current array row. +If optional ARG is given, move forward ARG array columns. +If necessary, keep the cursor in the window by scrolling right or left." + (interactive "p") + (let ((buffer-line (current-line)) + (buffer-column (current-column))) + (if (= (abs arg) 1) + (array-move-one-column arg) + (array-move-to-column + (limit-index (+ (or (array-current-column) + (error "Cursor is not in an array cell.")) + arg) + max-column)))) + (array-normalize-cursor)) + +(defun array-backward-column (&optional arg) + "Move backward one field, staying in the current array row. +If optional ARG is given, move backward ARG array columns. +If necessary, keep the cursor in the window by scrolling right or left." + (interactive "p") + (array-forward-column (- arg))) + +(defun array-goto-cell (a-row a-column) + "Go to array row A-ROW and array column A-COLUMN." + (interactive "nArray row: \nnArray column: ") + (array-move-to-cell + (limit-index a-row max-row) + (limit-index a-column max-column)) + (array-normalize-cursor)) + + + +;;; Internal copying functions. + +(defun array-field-string () + "Return the field string at the current cursor location." + ;; Requires that buffer-column be current. + (buffer-substring + (save-excursion (array-beginning-of-field t) (point)) + (save-excursion (array-end-of-field t) (point)))) + +(defun array-copy-once-vertically (sign) + "Copy the current field into one array row in direction SIGN (1 or -1). +Leave point at the beginning of the field and return the new array row. +If requested to move beyond the array bounds, signal an error." + ;; Requires that buffer-line, buffer-column, and copy-string be current. + (let ((a-row (array-move-one-row sign))) + (let ((inhibit-quit t)) + (delete-region (point) (save-excursion (array-end-of-field t) (point))) + (insert copy-string)) + (move-to-column buffer-column) + a-row)) + +(defun array-copy-once-horizontally (sign) + "Copy the current field into one array column in direction SIGN (1 or -1). +Leave point at the beginning of the field and return the new array column. +If requested to move beyond the array bounds, signal an error." + ;; Requires that buffer-line, buffer-column, and copy-string be current. + (let ((a-column (array-move-one-column sign))) + (array-update-buffer-position) + (let ((inhibit-quit t)) + (delete-region (point) (save-excursion (array-end-of-field t) (point))) + (insert copy-string)) + (move-to-column buffer-column) + a-column)) + +(defun array-copy-to-row (a-row) + "Copy the current field vertically into every cell up to and including A-ROW. +Leave point at the beginning of the field." + ;; Requires that buffer-line, buffer-column, array-row, and + ;; copy-string be current. + (let* ((num (- a-row array-row)) + (count (abs num)) + (sign (if (zerop count) () (/ num count)))) + (while (> count 0) + (array-move-one-row sign) + (array-update-buffer-position) + (let ((inhibit-quit t)) + (delete-region (point) (save-excursion (array-end-of-field t) (point))) + (insert copy-string)) + (move-to-column buffer-column) + (setq count (1- count))))) + +(defun array-copy-to-column (a-column) + "Copy the current field horizontally into every cell up to and including +A-COLUMN. Leave point at the beginning of the field." + ;; Requires that buffer-line, buffer-column, array-column, and + ;; copy-string be current. + (let* ((num (- a-column array-column)) + (count (abs num)) + (sign (if (zerop count) () (/ num count)))) + (while (> count 0) + (array-move-one-column sign) + (array-update-buffer-position) + (let ((inhibit-quit t)) + (delete-region (point) (save-excursion (array-end-of-field t) (point))) + (insert copy-string)) + (move-to-column buffer-column) + (setq count (1- count))))) + +(defun array-copy-to-cell (a-row a-column) + "Copy the current field into the cell at A-ROW, A-COLUMN. +Leave point at the beginning of the field." + ;; Requires that copy-string be current. + (array-move-to-cell a-row a-column) + (array-update-buffer-position) + (delete-region (point) (save-excursion (array-end-of-field t) (point))) + (insert copy-string) + (move-to-column buffer-column)) + + + +;;; Commands for copying. + +(defun array-copy-down (&optional arg) + "Copy the current field one array row down. +If optional ARG is given, copy down through ARG array rows." + (interactive "p") + (let* ((buffer-line (current-line)) + (buffer-column (current-column)) + (array-row (or (array-current-row) + (error "Cursor is not in a valid array cell."))) + (copy-string (array-field-string))) + (if (= (abs arg) 1) + (array-copy-once-vertically arg) + (array-copy-to-row + (limit-index (+ array-row arg) max-row)))) + (array-normalize-cursor)) + +(defun array-copy-up (&optional arg) + "Copy the current field one array row up. +If optional ARG is given, copy up through ARG array rows." + (interactive "p") + (array-copy-down (- arg))) + +(defun array-copy-forward (&optional arg) + "Copy the current field one array column to the right. +If optional ARG is given, copy through ARG array columns to the right." + (interactive "p") + (let* ((buffer-line (current-line)) + (buffer-column (current-column)) + (array-column (or (array-current-column) + (error "Cursor is not in a valid array cell."))) + (copy-string (array-field-string))) + (if (= (abs arg) 1) + (array-copy-once-horizontally arg) + (array-copy-to-column + (limit-index (+ array-column arg) max-column)))) + (array-normalize-cursor)) + +(defun array-copy-backward (&optional arg) + "Copy the current field one array column to the left. +If optional ARG is given, copy through ARG array columns to the left." + (interactive "p") + (array-copy-forward (- arg))) + +(defun array-copy-column-forward (&optional arg) + "Copy the entire current column in to the column to the right. +If optional ARG is given, copy through ARG array columns to the right." + (interactive "p") + (array-update-buffer-position) + (array-update-array-position) + (if (not array-column) + (error "Cursor is not in a valid array cell.")) + (message "Working...") + (let ((this-row 0)) + (while (< this-row max-row) + (setq this-row (1+ this-row)) + (array-move-to-cell this-row array-column) + (array-update-buffer-position) + (let ((copy-string (array-field-string))) + (if (= (abs arg) 1) + (array-copy-once-horizontally arg) + (array-copy-to-column + (limit-index (+ array-column arg) max-column)))))) + (message "Working...done") + (array-move-to-row array-row) + (array-normalize-cursor)) + +(defun array-copy-column-backward (&optional arg) + "Copy the entire current column one column to the left. +If optional ARG is given, copy through ARG columns to the left." + (interactive "p") + (array-copy-column-forward (- arg))) + +(defun array-copy-row-down (&optional arg) + "Copy the entire current row one row down. +If optional ARG is given, copy through ARG rows down." + (interactive "p") + (array-update-buffer-position) + (array-update-array-position) + (if (not array-row) + (error "Cursor is not in a valid array cell.")) + (cond + ((and (= array-row 1) (= arg -1)) + (error "Beginning of array.")) + ((and (= array-row max-row) (= arg 1)) + (error "End of array.")) + (t + (let* ((copy-string + (buffer-substring + (save-excursion (array-move-to-cell array-row 1) + (point)) + (save-excursion (array-move-to-cell array-row max-column) + (forward-line 1) + (point)))) + (this-row array-row) + (goal-row (limit-index (+ this-row arg) max-row)) + (num (- goal-row this-row)) + (count (abs num)) + (sign (if (not (zerop count)) (/ num count)))) + (while (> count 0) + (setq this-row (+ this-row sign)) + (array-move-to-cell this-row 1) + (let ((inhibit-quit t)) + (delete-region (point) + (save-excursion + (array-move-to-cell this-row max-column) + (forward-line 1) + (point))) + (insert copy-string)) + (setq count (1- count))) + (array-move-to-cell goal-row (or array-column 1))))) + (array-normalize-cursor)) + +(defun array-copy-row-up (&optional arg) + "Copy the entire current array row into the row above. +If optional ARG is given, copy through ARG rows up." + (interactive "p") + (array-copy-row-down (- arg))) + +(defun array-fill-rectangle () + "Copy the field at mark into every cell between mark and point." + (interactive) + ;; Bind arguments. + (array-update-buffer-position) + (let ((p-row (or (array-current-row) + (error "Cursor is not in a valid array cell."))) + (p-column (or (array-current-column) + (error "Cursor is not in a valid array cell."))) + (m-row + (save-excursion + (exchange-point-and-mark) + (array-update-buffer-position) + (or (array-current-row) + (error "Mark is not in a valid array cell.")))) + (m-column + (save-excursion + (exchange-point-and-mark) + (array-update-buffer-position) + (or (array-current-column) + (error "Mark is not in a valid array cell."))))) + (message "Working...") + (let ((top-row (min m-row p-row)) + (bottom-row (max m-row p-row)) + (left-column (min m-column p-column)) + (right-column (max m-column p-column))) + ;; Do the first row. + (let ((copy-string + (save-excursion + (array-move-to-cell m-row m-column) + (array-update-buffer-position) + (array-field-string)))) + (array-copy-to-cell top-row left-column) + (array-update-array-position top-row left-column) + (array-update-buffer-position) + (array-copy-to-column right-column)) + ;; Do the rest of the rows. + (array-move-to-cell top-row left-column) + (let ((copy-string + (buffer-substring + (point) + (save-excursion + (array-move-to-cell top-row right-column) + (setq buffer-column (current-column)) + (array-end-of-field t) + (point)))) + (this-row top-row)) + (while (/= this-row bottom-row) + (setq this-row (1+ this-row)) + (array-move-to-cell this-row left-column) + (let ((inhibit-quit t)) + (delete-region + (point) + (save-excursion + (array-move-to-cell this-row right-column) + (setq buffer-column (current-column)) + (array-end-of-field t) + (point))) + (insert copy-string))))) + (message "Working...done") + (array-goto-cell p-row p-column))) + + + +;;; Reconfiguration of the array. + +(defun array-make-template () + "Create the template of an array." + (interactive) + ;; If there is a conflict between field-width and init-string, resolve it. + (let ((check t) + (len)) + (while check + (setq init-field (read-input "Initial field value: ")) + (setq len (length init-field)) + (if (/= len field-width) + (if (y-or-n-p (format "Change field width to %d? " len)) + (progn (setq field-width len) + (setq check nil))) + (setq check nil)))) + (goto-char (point-min)) + (message "Working...") + (let ((this-row 1)) + ;; Loop through the rows. + (while (<= this-row max-row) + (if rows-numbered + (insert (format "%d:\n" this-row))) + (let ((this-column 1)) + ;; Loop through the columns. + (while (<= this-column max-column) + (insert init-field) + (if (and (zerop (% this-column columns-per-line)) + (/= this-column max-column)) + (newline)) + (setq this-column (1+ this-column)))) + (setq this-row (1+ this-row)) + (newline))) + (message "Working...done") + (array-goto-cell 1 1)) + +(defun array-reconfigure-rows (new-columns-per-line new-rows-numbered) + "Reconfigure the state of `rows-numbered' and `columns-per-line'. +NEW-COLUMNS-PER-LINE is the desired value of `columns-per-line' and +NEW-ROWS-NUMBERED (a character, either ?y or ?n) is the desired value +of rows-numbered." + (interactive "nColumns per line: \ncRows numbered? (y or n) ") + ;; Check on new-columns-per-line + (let ((check t)) + (while check + (if (and (>= new-columns-per-line 1) + (<= new-columns-per-line max-column)) + (setq check nil) + (setq new-columns-per-line + (string-to-int + (read-input + (format "Columns per line (1 - %d): " max-column))))))) + ;; Check on new-rows-numbered. It has to be done this way + ;; because interactive does not have y-or-n-p. + (cond + ((eq new-rows-numbered ?y) + (setq new-rows-numbered t)) + ((eq new-rows-numbered ?n) + (setq new-rows-numbered nil)) + (t + (setq new-rows-numbered (y-or-n-p "Rows numbered? ")))) + (message "Working...") + (array-update-buffer-position) + (let* ((main-buffer (buffer-name (current-buffer))) + (temp-buffer (make-temp-name "Array")) + (temp-max-row max-row) + (temp-max-column max-column) + (old-rows-numbered rows-numbered) + (old-columns-per-line columns-per-line) + (old-lines-per-row lines-per-row) + (old-field-width field-width) + (old-line-length line-length) + (this-row 1)) + (array-update-array-position) + ;; Do the cutting in a temporary buffer. + (copy-to-buffer temp-buffer (point-min) (point-max)) + (set-buffer temp-buffer) + (goto-char (point-min)) + (while (<= this-row temp-max-row) + ;; Deal with row number. + (cond + ((or (and old-rows-numbered new-rows-numbered) + (and (not old-rows-numbered) (not new-rows-numbered))) + ;; Nothing is changed. + ()) + ((and old-rows-numbered (not new-rows-numbered)) + ;; Delete the row number. + (kill-line 1)) + (t + ;; Add the row number. + (insert-string (format "%d:\n" this-row)))) + ;; Deal with the array columns in this row. + (cond + ((= old-columns-per-line new-columns-per-line) + ;; Nothing is changed. Go to the next row. + (forward-line (- old-lines-per-row (if old-rows-numbered 1 0)))) + (t + ;; First expand the row. Then cut it up into new pieces. + (let ((newlines-to-be-removed + (floor (1- temp-max-column) old-columns-per-line)) + (newlines-removed 0) + (newlines-to-be-added + (floor (1- temp-max-column) new-columns-per-line)) + (newlines-added 0)) + (while (< newlines-removed newlines-to-be-removed) + (move-to-column-untabify + (* (1+ newlines-removed) old-line-length)) + (kill-line 1) + (setq newlines-removed (1+ newlines-removed))) + (beginning-of-line) + (while (< newlines-added newlines-to-be-added) + (move-to-column-untabify (* old-field-width new-columns-per-line)) + (newline) + (setq newlines-added (1+ newlines-added))) + (forward-line 1)))) + (setq this-row (1+ this-row))) + (let ((inhibit-quit t)) + (set-buffer main-buffer) + (erase-buffer) + (insert-buffer temp-buffer) + ;; Update local variables. + (setq columns-per-line new-columns-per-line) + (setq rows-numbered new-rows-numbered) + (setq line-length (* old-field-width new-columns-per-line)) + (setq lines-per-row + (+ (ceiling temp-max-column new-columns-per-line) + (if new-rows-numbered 1 0))) + (array-goto-cell (or array-row 1) (or array-column 1))) + (kill-buffer temp-buffer)) + (message "Working...done")) + +(defun array-expand-rows () + "Expand the rows so each fits on one line and remove row numbers." + (interactive) + (array-reconfigure-rows max-column ?n)) + + + +;;; Utilities. + +(defun limit-index (index limit) + (cond ((< index 1) 1) + ((> index limit) limit) + (t index))) + +(defun abs (int) + "Return the absolute value of INT." + (if (< int 0) (- int) int)) + + +(defun floor (int1 int2) + "Returns the floor of INT1 divided by INT2. +INT1 may be negative. INT2 must be positive." + (if (< int1 0) + (- (ceiling (- int1) int2)) + (/ int1 int2))) + +(defun ceiling (int1 int2) + "Returns the ceiling of INT1 divided by INT2. +Assumes that both arguments are nonnegative." + (+ (/ int1 int2) + (if (zerop (mod int1 int2)) + 0 + 1))) + +(defun xor (pred1 pred2) + "Returns the logical exclusive or of predicates PRED1 and PRED2." + (and (or pred1 pred2) + (not (and pred1 pred2)))) + +(defun current-line () + "Return the current buffer line at point. The first line is 0." + (save-excursion + (beginning-of-line) + (count-lines (point-min) (point)))) + +(defun move-to-column-untabify (column) + "Move to COLUMN on the current line, untabifying if necessary. +Return COLUMN." + (or (and (= column (move-to-column column)) + column) + ;; There is a tab in the way. + (if respect-tabs + (error "There is a TAB character in the way.") + (progn + (untabify-backward) + (move-to-column column))))) + +(defun untabify-backward () + "Untabify the preceding tab." + (save-excursion + (let ((start (point))) + (backward-char 1) + (untabify (point) start)))) + + + +;;; Array mode. + +(defvar array-mode-map nil + "Keymap used in array mode.") + +(if array-mode-map + () + (setq array-mode-map (make-keymap)) + ;; Bind keys. + (define-key array-mode-map "\M-ad" 'array-display-local-variables) + (define-key array-mode-map "\M-am" 'array-make-template) + (define-key array-mode-map "\M-ae" 'array-expand-rows) + (define-key array-mode-map "\M-ar" 'array-reconfigure-rows) + (define-key array-mode-map "\M-a=" 'array-what-position) + (define-key array-mode-map "\M-ag" 'array-goto-cell) + (define-key array-mode-map "\M-af" 'array-fill-rectangle) + (define-key array-mode-map "\C-n" 'array-next-row) + (define-key array-mode-map "\C-p" 'array-previous-row) + (define-key array-mode-map "\C-f" 'array-forward-column) + (define-key array-mode-map "\C-b" 'array-backward-column) + (define-key array-mode-map "\M-n" 'array-copy-down) + (define-key array-mode-map "\M-p" 'array-copy-up) + (define-key array-mode-map "\M-f" 'array-copy-forward) + (define-key array-mode-map "\M-b" 'array-copy-backward) + (define-key array-mode-map "\M-\C-n" 'array-copy-row-down) + (define-key array-mode-map "\M-\C-p" 'array-copy-row-up) + (define-key array-mode-map "\M-\C-f" 'array-copy-column-forward) + (define-key array-mode-map "\M-\C-b" 'array-copy-column-backward)) + +(put 'array-mode 'mode-class 'special) + +(defun array-mode () + "Major mode for editing arrays. + + Array mode is a specialized mode for editing arrays. An array is +considered to be a two-dimensional set of strings. The strings are +NOT recognized as integers or real numbers. + + The array MUST reside at the top of the buffer. + + TABs are not respected, and may be converted into spaces at any time. +Setting the variable 'respect-tabs to non-nil will prevent TAB conversion, +but will cause many functions to give errors if they encounter one. + + Upon entering array mode, you will be prompted for the values of +several variables. Others will be calculated based on the values you +supply. These variables are all local the the buffer. Other buffer +in array mode may have different values assigned to the variables. +The variables are: + +Variables you assign: + max-row: The number of rows in the array. + max-column: The number of columns in the array. + columns-per-line: The number of columns in the array per line of buffer. + field-width: The width of each field, in characters. + rows-numbered: A logical variable describing whether to ignore + row numbers in the buffer. + +Variables which are calculated: + line-length: The number of characters in a buffer line. + lines-per-row: The number of buffer lines used to display each row. + + The following commands are available (an asterisk indicates it may +take a numeric prefix argument): + + * \\<array-mode-map>\\[array-forward-column] Move forward one column. + * \\[array-backward-column] Move backward one column. + * \\[array-next-row] Move down one row. + * \\[array-previous-row] Move up one row. + + * \\[array-copy-forward] Copy the current field into the column to the right. + * \\[array-copy-backward] Copy the current field into the column to the left. + * \\[array-copy-down] Copy the current field into the row below. + * \\[array-copy-up] Copy the current field into the row above. + + * \\[array-copy-column-forward] Copy the current column into the column to the right. + * \\[array-copy-column-backward] Copy the current column into the column to the left. + * \\[array-copy-row-down] Copy the current row into the row below. + * \\[array-copy-row-up] Copy the current row into the row above. + + \\[array-fill-rectangle] Copy the field at mark into every cell with row and column + between that of point and mark. + + \\[array-what-position] Display the current array row and column. + \\[array-goto-cell] Go to a particular array cell. + + \\[array-make-template] Make a template for a new array. + \\[array-reconfigure-rows] Reconfigure the array. + \\[array-expand-rows] Expand the array (remove row numbers and + newlines inside rows) + + \\[array-display-local-variables] Display the current values of local variables. + +Entering array mode calls the function `array-mode-hook'." + + (interactive) + ;; Number of rows in the array. + (make-local-variable 'max-row) + ;; Number of columns in the array. + (make-local-variable 'max-column) + ;; Number of array columns per line. + (make-local-variable 'columns-per-line) + ;; Width of a field in the array. + (make-local-variable 'field-width) + ;; Are rows numbered in the buffer? + (make-local-variable 'rows-numbered) + ;; Length of a line in the array. + (make-local-variable 'line-length) + ;; Number of lines per array row. + (make-local-variable 'lines-per-row) + ;; Current line number of point in the buffer. + (make-local-variable 'buffer-line) + ;; Current column number of point in the buffer. + (make-local-variable 'buffer-column) + ;; Current array row location of point. + (make-local-variable 'array-row) + ;; Current array column location of point. + (make-local-variable 'array-column) + ;; Current field string being copied. + (make-local-variable 'copy-string) + ;; Should TAB conversion be prevented? + (make-local-variable 'respect-tabs) + (setq respect-tabs nil) + (array-init-local-variables) + (setq major-mode 'array-mode) + (setq mode-name "Array") + ;; Update mode-line. + (progn (save-excursion (set-buffer (other-buffer))) + (set-buffer-modified-p (buffer-modified-p)) + (sit-for 0)) + (make-variable-buffer-local 'truncate-lines) + (setq truncate-lines t) + (setq overwrite-mode t) + (use-local-map array-mode-map) + (run-hooks 'array-mode-hook)) + + + +;;; Initialization functions. These are not interactive. + +(defun array-init-local-variables () + "Initialize the variables associated with the +array in this buffer." + (array-init-max-row) + (array-init-max-column) + (array-init-columns-per-line) + (array-init-field-width) + (array-init-rows-numbered) + (array-init-line-length) + (array-init-lines-per-row) + (message "")) + +(defun array-init-max-row (&optional arg) + "Initialize the value of max-row." + (setq max-row + (or arg (string-to-int (read-input "Number of array rows: "))))) + +(defun array-init-max-column (&optional arg) + "Initialize the value of max-column." + (setq max-column + (or arg (string-to-int (read-input "Number of array columns: "))))) + +(defun array-init-columns-per-line (&optional arg) + "Initialize the value of columns-per-line." + (setq columns-per-line + (or arg (string-to-int (read-input "Array columns per line: "))))) + +(defun array-init-field-width (&optional arg) + "Initialize the value of field-width." + (setq field-width + (or arg (string-to-int (read-input "Field width: "))))) + +(defun array-init-rows-numbered (&optional arg) + "Initialize the value of rows-numbered." + (setq rows-numbered + (or arg (y-or-n-p "Rows numbered? ")))) + +(defun array-init-line-length (&optional arg) + "Initialize the value of line-length." + (setq line-length + (or arg + (* field-width columns-per-line)))) + +(defun array-init-lines-per-row (&optional arg) + "Initialize the value of lines-per-row." + (setq lines-per-row + (or arg + (+ (ceiling max-column columns-per-line) + (if rows-numbered 1 0))))) diff --git a/lisp/autoinsert.el b/lisp/autoinsert.el new file mode 100644 index 00000000000..61736c9f68b --- /dev/null +++ b/lisp/autoinsert.el @@ -0,0 +1,92 @@ +;; Automatic mode-dependent insertion of text into new files. +;; Copyright (C) 1985, 1986, 1987 Free Software Foundation, Inc. + +;; 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 1, 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, 675 Mass Ave, Cambridge, MA 02139, USA. + +;;; autoinsert.el + +;;; Abstract: +;;; +;;; The following defines an association list for files to be +;;; automatically inserted when a new file is created, and a function +;;; which automatically inserts these files; the idea is to insert +;;; default files much as the mode is automatically set using +;;; auto-mode-alist. +;;; +;;; The auto-insert-alist consists of dotted pairs of +;;; ( REGEXP . FILENAME ) where REGEXP is a regular expression, and +;;; FILENAME is the file name of a file which is to be inserted into +;;; all new files matching the regular expression with which it is +;;; paired. +;;; +;;; To use: +;;; load autoinsert.el +;;; setq auto-insert-directory to an appropriate value, which +;;; must end in "/" +;;; +;;; Author: Charlie Martin +;;; Department of Computer Science and +;;; National Biomedical Simulation Resource +;;; Box 3709 +;;; Duke University Medical Center +;;; Durham, NC 27710 +;;; (crm@cs.duke.edu,mcnc!duke!crm) +;;; +;;; Date: Fri Jul 1 16:15:31 EDT 1988 + +(defvar auto-insert-alist '(("\\.tex$" . "tex-insert.tex") + ("\\.c$" . "c-insert.c") + ("\\.h$" . "h-insert.c") + ("[Mm]akefile" . "makefile.inc") + ("\\.bib$" . "tex-insert.tex")) + "A list specifying text to insert by default into a new file. +Elements look like (REGEXP . FILENAME); if the new file's name +matches REGEXP, then the file FILENAME is inserted into the buffer. +Only the first matching element is effective.") + +;;; Establish a default value for auto-insert-directory +(defvar auto-insert-directory "~/insert/" + "*Directory from which auto-inserted files are taken.") + +(defun insert-auto-insert-files () + "Insert default contents into a new file. +Matches the visited file name against the elements of `auto-insert-alist'." + (let ((alist auto-insert-alist) + ;; remove backup suffixes from file name + (name (file-name-sans-versions buffer-file-name)) + (insert-file nil)) + + ;; find first matching alist entry + (while (and (not insert-file) alist) + (if (string-match (car (car alist)) name) + (setq insert-file (cdr (car alist))) + (setq alist (cdr alist)))) + + ;; Now, if we found an appropriate insert file, insert it + (if insert-file + (let ((file (concat auto-insert-directory insert-file))) + (if (file-readable-p file) + (progn + (insert-file-contents file) + (set-buffer-modified-p nil)) + (message "Auto-insert: file %s not found" file) + (sleep-for 1)))))) + +;; Make this feature take effect when a nonexistent file is visited. +(setq find-file-not-found-hooks + (cons 'insert-auto-insert-files + find-file-not-found-hooks)) |