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958 lines
34 KiB
EmacsLisp
958 lines
34 KiB
EmacsLisp
;;; Array editing commands for Gnu Emacs
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;;; Written by dmb%morgoth@harvard.harvard.edu (address is old)
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;;; (David M. Brown at Goldberg-Zoino & Associates, Inc.)
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;;; Thanks to cph@kleph.ai.mit.edu for assistance
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;; Copyright (C) 1987 Free Software Foundation, Inc.
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 1, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to
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;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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;;; To do:
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;;; Smooth initialization process by grokking local variables list
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;;; at end of buffer or parsing buffer using whitespace as delimiters.
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;;; Make 'array-copy-column-right faster.
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;;; Internal information functions.
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(defun array-cursor-in-array-range ()
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"Returns t if the cursor is in a valid array cell.
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Its ok to be on a row number line."
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(let ((columns-last-line (% max-column columns-per-line)))
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;; Requires buffer-line and buffer-column to be current.
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(not (or
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;; The cursor is too far to the right.
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(>= buffer-column line-length)
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;; The cursor is below the last row.
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(>= buffer-line (* lines-per-row max-row))
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;; The cursor is on the last line of the row, the line is smaller
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;; than the others, and the cursor is after the last array column
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;; on the line.
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(and (zerop (% (1+ buffer-line) lines-per-row))
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(not (zerop columns-last-line))
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(>= buffer-column (* columns-last-line field-width)))))))
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(defun array-current-row ()
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"Return the array row of the field in which the cursor is located."
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;; Requires buffer-line and buffer-column to be current.
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(and (array-cursor-in-array-range)
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(1+ (floor buffer-line lines-per-row))))
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(defun array-current-column ()
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"Return the array column of the field in which the cursor is located."
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;; Requires buffer-line and buffer-column to be current.
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(and (array-cursor-in-array-range)
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;; It's not okay to be on a row number line.
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(not (and rows-numbered
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(zerop (% buffer-line lines-per-row))))
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(+
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;; Array columns due to line differences.
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(* columns-per-line
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(if rows-numbered
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(1- (% buffer-line lines-per-row))
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(% buffer-line lines-per-row)))
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;; Array columns on the current line.
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(ceiling (1+ buffer-column) field-width))))
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(defun array-update-array-position (&optional a-row a-column)
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"Set `array-row' and `array-column' to their current values or
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to the optional arguments A-ROW and A-COLUMN."
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;; Requires that buffer-line and buffer-column be current.
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(setq array-row (or a-row (array-current-row))
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array-column (or a-column (array-current-column))))
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(defun array-update-buffer-position ()
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"Set buffer-line and buffer-column to their current values."
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(setq buffer-line (current-line)
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buffer-column (current-column)))
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;;; Information commands.
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(defun array-what-position ()
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"Display the row and column in which the cursor is positioned."
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(interactive)
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(let ((buffer-line (current-line))
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(buffer-column (current-column)))
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(message (format "Array row: %s Array column: %s"
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(prin1-to-string (array-current-row))
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(prin1-to-string (array-current-column))))))
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(defun array-display-local-variables ()
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"Display the current state of the local variables in the minibuffer."
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(interactive)
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(let ((buf (buffer-name (current-buffer))))
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(with-output-to-temp-buffer "*Local Variables*"
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(buffer-disable-undo standard-output)
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(terpri)
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(princ (format " Buffer: %s\n\n" buf))
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(princ (format " max-row: %s\n"
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(prin1-to-string max-row)))
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(princ (format " max-column: %s\n"
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(prin1-to-string max-column)))
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(princ (format " columns-per-line: %s\n"
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(prin1-to-string columns-per-line)))
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(princ (format " field-width: %s\n"
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(prin1-to-string field-width)))
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(princ (format " rows-numbered: %s\n"
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(prin1-to-string rows-numbered)))
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(princ (format " lines-per-row: %s\n"
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(prin1-to-string lines-per-row)))
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(princ (format " line-length: %s\n"
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(prin1-to-string line-length))))))
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;;; Internal movement functions.
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(defun array-beginning-of-field (&optional go-there)
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"Return the column of the beginning of the current field.
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Optional argument GO-THERE, if non-nil, means go there too."
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;; Requires that buffer-column be current.
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(let ((goal-column (- buffer-column (% buffer-column field-width))))
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(if go-there
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(move-to-column-untabify goal-column)
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goal-column)))
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(defun array-end-of-field (&optional go-there)
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"Return the column of the end of the current array field.
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If optional argument GO-THERE is non-nil, go there too."
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;; Requires that buffer-column be current.
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(let ((goal-column (+ (- buffer-column (% buffer-column field-width))
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field-width)))
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(if go-there
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(move-to-column-untabify goal-column)
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goal-column)))
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(defun array-move-to-cell (a-row a-column)
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"Move to array row A-ROW and array column A-COLUMN.
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Leave point at the beginning of the field and return the new buffer column."
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(let ((goal-line (+ (* lines-per-row (1- a-row))
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(if rows-numbered 1 0)
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(floor (1- a-column) columns-per-line)))
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(goal-column (* field-width (% (1- a-column) columns-per-line))))
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(goto-char (point-min))
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(forward-line goal-line)
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(move-to-column-untabify goal-column)))
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(defun array-move-to-row (a-row)
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"Move to array row A-ROW preserving the current array column.
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Leave point at the beginning of the field and return the new array row."
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;; Requires that buffer-line and buffer-column be current.
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(let ((goal-line (+ (* lines-per-row (1- a-row))
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(% buffer-line lines-per-row)))
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(goal-column (- buffer-column (% buffer-column field-width))))
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(forward-line (- goal-line buffer-line))
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(move-to-column-untabify goal-column)
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a-row))
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(defun array-move-to-column (a-column)
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"Move to array column A-COLUMN preserving the current array row.
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Leave point at the beginning of the field and return the new array column."
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;; Requires that buffer-line and buffer-column be current.
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(let ((goal-line (+ (- buffer-line (% buffer-line lines-per-row))
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(if rows-numbered 1 0)
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(floor (1- a-column) columns-per-line)))
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(goal-column (* field-width (% (1- a-column) columns-per-line))))
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(forward-line (- goal-line buffer-line))
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(move-to-column-untabify goal-column)
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a-column))
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(defun array-move-one-row (sign)
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"Move one array row in direction SIGN (1 or -1).
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Leave point at the beginning of the field and return the new array row.
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If requested to move beyond the array bounds, signal an error."
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;; Requires that buffer-line and buffer-column be current.
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(let ((goal-column (array-beginning-of-field))
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(array-row (or (array-current-row)
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(error "Cursor is not in a valid array cell."))))
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(cond ((and (= array-row max-row) (= sign 1))
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(error "End of array."))
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((and (= array-row 1) (= sign -1))
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(error "Beginning of array."))
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(t
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(progn
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(forward-line (* sign lines-per-row))
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(move-to-column-untabify goal-column)
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(+ array-row sign))))))
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(defun array-move-one-column (sign)
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"Move one array column in direction SIGN (1 or -1).
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Leave point at the beginning of the field and return the new array column.
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If requested to move beyond the array bounds, signal an error."
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;; Requires that buffer-line and buffer-column be current.
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(let ((array-column (or (array-current-column)
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(error "Cursor is not in a valid array cell."))))
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(cond ((and (= array-column max-column) (= sign 1))
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(error "End of array."))
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((and (= array-column 1) (= sign -1))
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(error "Beginning of array."))
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(t
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(cond
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;; Going backward from first column on the line.
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((and (= sign -1) (= 1 (% array-column columns-per-line)))
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(forward-line -1)
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(move-to-column-untabify
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(* field-width (1- columns-per-line))))
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;; Going forward from last column on the line.
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((and (= sign 1) (zerop (% array-column columns-per-line)))
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(forward-line 1))
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;; Somewhere in the middle of the line.
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(t
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(move-to-column-untabify (+ (array-beginning-of-field)
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(* field-width sign)))))
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(+ array-column sign)))))
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(defun array-normalize-cursor ()
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"Move the cursor to the first non-whitespace character in the field and,
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if necessary, scroll horizontally to keep the cursor in view."
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;; Assumes point is at the beginning of the field.
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(let ((buffer-column (current-column)))
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(skip-chars-forward " \t"
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(1- (save-excursion (array-end-of-field t) (point))))
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(array-maybe-scroll-horizontally)))
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(defun array-maybe-scroll-horizontally ()
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"If necessary, scroll horizontally to keep the cursor in view."
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;; This is only called from array-normalize-cursor so
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;; buffer-column will always be current.
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(let ((w-hscroll (window-hscroll))
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(w-width (window-width)))
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(cond
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((and (>= buffer-column w-hscroll)
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(<= buffer-column (+ w-hscroll w-width)))
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;; It's already visible. Do nothing.
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nil)
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((> buffer-column (+ w-hscroll w-width))
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;; It's to the right. Scroll left.
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(scroll-left (- (- buffer-column w-hscroll)
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(/ w-width 2))))
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(t
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;; It's to the left. Scroll right.
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(scroll-right (+ (- w-hscroll buffer-column)
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(/ w-width 2)))))))
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;;; Movement commands.
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(defun array-next-row (&optional arg)
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"Move down one array row, staying in the current array column.
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If optional ARG is given, move down ARG array rows."
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(interactive "p")
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(let ((buffer-line (current-line))
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(buffer-column (current-column)))
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(if (= (abs arg) 1)
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(array-move-one-row arg)
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(array-move-to-row
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(limit-index (+ (or (array-current-row)
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(error "Cursor is not in an array cell."))
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arg)
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max-row))))
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(array-normalize-cursor))
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(defun array-previous-row (&optional arg)
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"Move up one array row, staying in the current array column.
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If optional ARG is given, move up ARG array rows."
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(interactive "p")
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(array-next-row (- arg)))
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(defun array-forward-column (&optional arg)
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"Move forward one field, staying in the current array row.
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If optional ARG is given, move forward ARG array columns.
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If necessary, keep the cursor in the window by scrolling right or left."
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(interactive "p")
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(let ((buffer-line (current-line))
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(buffer-column (current-column)))
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(if (= (abs arg) 1)
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(array-move-one-column arg)
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(array-move-to-column
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(limit-index (+ (or (array-current-column)
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(error "Cursor is not in an array cell."))
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arg)
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max-column))))
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(array-normalize-cursor))
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(defun array-backward-column (&optional arg)
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"Move backward one field, staying in the current array row.
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If optional ARG is given, move backward ARG array columns.
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If necessary, keep the cursor in the window by scrolling right or left."
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(interactive "p")
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(array-forward-column (- arg)))
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(defun array-goto-cell (a-row a-column)
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"Go to array row A-ROW and array column A-COLUMN."
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(interactive "nArray row: \nnArray column: ")
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(array-move-to-cell
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(limit-index a-row max-row)
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(limit-index a-column max-column))
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(array-normalize-cursor))
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;;; Internal copying functions.
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(defun array-field-string ()
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"Return the field string at the current cursor location."
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;; Requires that buffer-column be current.
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(buffer-substring
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(save-excursion (array-beginning-of-field t) (point))
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(save-excursion (array-end-of-field t) (point))))
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(defun array-copy-once-vertically (sign)
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"Copy the current field into one array row in direction SIGN (1 or -1).
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Leave point at the beginning of the field and return the new array row.
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If requested to move beyond the array bounds, signal an error."
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;; Requires that buffer-line, buffer-column, and copy-string be current.
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(let ((a-row (array-move-one-row sign)))
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(let ((inhibit-quit t))
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(delete-region (point) (save-excursion (array-end-of-field t) (point)))
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(insert copy-string))
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(move-to-column buffer-column)
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a-row))
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(defun array-copy-once-horizontally (sign)
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"Copy the current field into one array column in direction SIGN (1 or -1).
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Leave point at the beginning of the field and return the new array column.
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If requested to move beyond the array bounds, signal an error."
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;; Requires that buffer-line, buffer-column, and copy-string be current.
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(let ((a-column (array-move-one-column sign)))
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(array-update-buffer-position)
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(let ((inhibit-quit t))
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(delete-region (point) (save-excursion (array-end-of-field t) (point)))
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(insert copy-string))
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(move-to-column buffer-column)
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a-column))
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(defun array-copy-to-row (a-row)
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"Copy the current field vertically into every cell up to and including A-ROW.
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Leave point at the beginning of the field."
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;; Requires that buffer-line, buffer-column, array-row, and
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;; copy-string be current.
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(let* ((num (- a-row array-row))
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(count (abs num))
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(sign (if (zerop count) () (/ num count))))
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(while (> count 0)
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(array-move-one-row sign)
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(array-update-buffer-position)
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(let ((inhibit-quit t))
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(delete-region (point) (save-excursion (array-end-of-field t) (point)))
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(insert copy-string))
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(move-to-column buffer-column)
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(setq count (1- count)))))
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(defun array-copy-to-column (a-column)
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"Copy the current field horizontally into every cell up to and including
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A-COLUMN. Leave point at the beginning of the field."
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;; Requires that buffer-line, buffer-column, array-column, and
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;; copy-string be current.
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(let* ((num (- a-column array-column))
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(count (abs num))
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(sign (if (zerop count) () (/ num count))))
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(while (> count 0)
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(array-move-one-column sign)
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(array-update-buffer-position)
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(let ((inhibit-quit t))
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(delete-region (point) (save-excursion (array-end-of-field t) (point)))
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(insert copy-string))
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(move-to-column buffer-column)
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(setq count (1- count)))))
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(defun array-copy-to-cell (a-row a-column)
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"Copy the current field into the cell at A-ROW, A-COLUMN.
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Leave point at the beginning of the field."
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;; Requires that copy-string be current.
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(array-move-to-cell a-row a-column)
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(array-update-buffer-position)
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(delete-region (point) (save-excursion (array-end-of-field t) (point)))
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(insert copy-string)
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(move-to-column buffer-column))
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;;; Commands for copying.
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(defun array-copy-down (&optional arg)
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"Copy the current field one array row down.
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If optional ARG is given, copy down through ARG array rows."
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(interactive "p")
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(let* ((buffer-line (current-line))
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(buffer-column (current-column))
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(array-row (or (array-current-row)
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(error "Cursor is not in a valid array cell.")))
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(copy-string (array-field-string)))
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(if (= (abs arg) 1)
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(array-copy-once-vertically arg)
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(array-copy-to-row
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(limit-index (+ array-row arg) max-row))))
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(array-normalize-cursor))
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(defun array-copy-up (&optional arg)
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"Copy the current field one array row up.
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If optional ARG is given, copy up through ARG array rows."
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(interactive "p")
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(array-copy-down (- arg)))
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(defun array-copy-forward (&optional arg)
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"Copy the current field one array column to the right.
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If optional ARG is given, copy through ARG array columns to the right."
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(interactive "p")
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(let* ((buffer-line (current-line))
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(buffer-column (current-column))
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(array-column (or (array-current-column)
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(error "Cursor is not in a valid array cell.")))
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(copy-string (array-field-string)))
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(if (= (abs arg) 1)
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(array-copy-once-horizontally arg)
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(array-copy-to-column
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(limit-index (+ array-column arg) max-column))))
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(array-normalize-cursor))
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(defun array-copy-backward (&optional arg)
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"Copy the current field one array column to the left.
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If optional ARG is given, copy through ARG array columns to the left."
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(interactive "p")
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(array-copy-forward (- arg)))
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(defun array-copy-column-forward (&optional arg)
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"Copy the entire current column in to the column to the right.
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If optional ARG is given, copy through ARG array columns to the right."
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(interactive "p")
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(array-update-buffer-position)
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(array-update-array-position)
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(if (not array-column)
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(error "Cursor is not in a valid array cell."))
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(message "Working...")
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(let ((this-row 0))
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(while (< this-row max-row)
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(setq this-row (1+ this-row))
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(array-move-to-cell this-row array-column)
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(array-update-buffer-position)
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(let ((copy-string (array-field-string)))
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(if (= (abs arg) 1)
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(array-copy-once-horizontally arg)
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(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)))))
|