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Diffstat (limited to 'lisp/array.el')
| -rw-r--r-- | lisp/array.el | 957 |
1 files changed, 0 insertions, 957 deletions
diff --git a/lisp/array.el b/lisp/array.el deleted file mode 100644 index d58d558188e..00000000000 --- a/lisp/array.el +++ /dev/null @@ -1,957 +0,0 @@ -;;; 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))))) |