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1 ;;; array.el --- array editing commands for XEmacs
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2
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3 ;; Copyright (C) 1987 Free Software Foundation, Inc.
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4
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5 ;; Author David M. Brown
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6 ;; Maintainer: FSF
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7 ;; Keywords: extensions
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8
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9 ;; This file is part of XEmacs.
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10
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11 ;; XEmacs is free software; you can redistribute it and/or modify it
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12 ;; under the terms of the GNU General Public License as published by
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13 ;; the Free Software Foundation; either version 2, or (at your option)
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14 ;; any later version.
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15
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16 ;; XEmacs is distributed in the hope that it will be useful, but
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17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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19 ;; General Public License for more details.
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20
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21 ;; You should have received a copy of the GNU General Public License
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16
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22 ;; along with XEmacs; see the file COPYING. If not, write to the
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23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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24 ;; Boston, MA 02111-1307, USA.
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0
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25
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2
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26 ;;; Synched up with: FSF 19.34.
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27
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28 ;;; Commentary:
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29
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30 ;; Commands for editing a buffer interpreted as a rectangular array
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31 ;; or matrix of whitespace-separated strings. You specify the array
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32 ;; dimensions and some other parameters at startup time.
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33
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34 ;; Written by dmb%morgoth@harvard.harvard.edu (address is old)
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35 ;; (David M. Brown at Goldberg-Zoino & Associates, Inc.)
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36 ;; Thanks to cph@kleph.ai.mit.edu for assistance
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37
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38 ;; To do:
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39 ;; Smooth initialization process by grokking local variables list
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40 ;; at end of buffer or parsing buffer using whitespace as delimiters.
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41 ;; Make 'array-copy-column-right faster.
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42
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43
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44 ;;; Code:
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45
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46 ;;; Internal information functions.
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47
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48 (defun array-cursor-in-array-range ()
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49 "Returns t if the cursor is in a valid array cell.
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50 Its ok to be on a row number line."
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51 (let ((columns-last-line (% max-column columns-per-line)))
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52 ;; Requires buffer-line and buffer-column to be current.
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53 (not (or
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54 ;; The cursor is too far to the right.
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55 (>= buffer-column line-length)
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56 ;; The cursor is below the last row.
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57 (>= buffer-line (* lines-per-row max-row))
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58 ;; The cursor is on the last line of the row, the line is smaller
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59 ;; than the others, and the cursor is after the last array column
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60 ;; on the line.
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61 (and (zerop (% (1+ buffer-line) lines-per-row))
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62 (not (zerop columns-last-line))
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63 (>= buffer-column (* columns-last-line field-width)))))))
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64
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65 (defun array-current-row ()
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66 "Return the array row of the field in which the cursor is located."
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67 ;; Requires buffer-line and buffer-column to be current.
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68 (and (array-cursor-in-array-range)
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69 (1+ (floor buffer-line lines-per-row))))
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70
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71 (defun array-current-column ()
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72 "Return the array column of the field in which the cursor is located."
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73 ;; Requires buffer-line and buffer-column to be current.
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74 (and (array-cursor-in-array-range)
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75 ;; It's not okay to be on a row number line.
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76 (not (and rows-numbered
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77 (zerop (% buffer-line lines-per-row))))
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78 (+
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79 ;; Array columns due to line differences.
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80 (* columns-per-line
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81 (if rows-numbered
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82 (1- (% buffer-line lines-per-row))
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83 (% buffer-line lines-per-row)))
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84 ;; Array columns on the current line.
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85 (1+ (floor buffer-column field-width)))))
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86
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87 (defun array-update-array-position (&optional a-row a-column)
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88 "Set `array-row' and `array-column' to their current values or
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89 to the optional arguments A-ROW and A-COLUMN."
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90 ;; Requires that buffer-line and buffer-column be current.
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91 (setq array-row (or a-row (array-current-row))
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92 array-column (or a-column (array-current-column))))
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93
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94 (defun array-update-buffer-position ()
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95 "Set buffer-line and buffer-column to their current values."
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96 (setq buffer-line (current-line)
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97 buffer-column (current-column)))
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98
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99
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100
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101 ;;; Information commands.
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102
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103 (defun array-what-position ()
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104 "Display the row and column in which the cursor is positioned."
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105 (interactive)
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106 (let ((buffer-line (current-line))
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107 (buffer-column (current-column)))
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70
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108 (message "Array row: %s Array column: %s"
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109 (prin1-to-string (array-current-row))
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110 (prin1-to-string (array-current-column)))))
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111
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112 (defun array-display-local-variables ()
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113 "Display the current state of the local variables in the minibuffer."
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114 (interactive)
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115 (let ((buf (buffer-name (current-buffer))))
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116 (with-output-to-temp-buffer "*Local Variables*"
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117 (buffer-disable-undo standard-output)
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118 (terpri)
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119 (princ (format " Buffer: %s\n\n" buf))
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120 (princ (format " max-row: %s\n"
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121 (prin1-to-string max-row)))
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122 (princ (format " max-column: %s\n"
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123 (prin1-to-string max-column)))
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124 (princ (format " columns-per-line: %s\n"
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125 (prin1-to-string columns-per-line)))
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126 (princ (format " field-width: %s\n"
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127 (prin1-to-string field-width)))
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128 (princ (format " rows-numbered: %s\n"
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129 (prin1-to-string rows-numbered)))
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130 (princ (format " lines-per-row: %s\n"
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131 (prin1-to-string lines-per-row)))
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132 (princ (format " line-length: %s\n"
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133 (prin1-to-string line-length))))))
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134
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135
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136
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137 ;;; Internal movement functions.
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138
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139 (defun array-beginning-of-field (&optional go-there)
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140 "Return the column of the beginning of the current field.
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141 Optional argument GO-THERE, if non-nil, means go there too."
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142 ;; Requires that buffer-column be current.
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143 (let ((goal-column (- buffer-column (% buffer-column field-width))))
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144 (if go-there
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145 (move-to-column-untabify goal-column)
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146 goal-column)))
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147
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148 (defun array-end-of-field (&optional go-there)
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149 "Return the column of the end of the current array field.
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150 If optional argument GO-THERE is non-nil, go there too."
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151 ;; Requires that buffer-column be current.
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152 (let ((goal-column (+ (- buffer-column (% buffer-column field-width))
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153 field-width)))
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154 (if go-there
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155 (move-to-column-untabify goal-column)
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156 goal-column)))
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157
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158 (defun array-move-to-cell (a-row a-column)
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159 "Move to array row A-ROW and array column A-COLUMN.
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160 Leave point at the beginning of the field and return the new buffer column."
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161 (let ((goal-line (+ (* lines-per-row (1- a-row))
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162 (if rows-numbered 1 0)
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163 (floor (1- a-column) columns-per-line)))
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164 (goal-column (* field-width (% (1- a-column) columns-per-line))))
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165 (goto-char (point-min))
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166 (forward-line goal-line)
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167 (move-to-column-untabify goal-column)))
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168
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169 (defun array-move-to-row (a-row)
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170 "Move to array row A-ROW preserving the current array column.
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171 Leave point at the beginning of the field and return the new array row."
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172 ;; Requires that buffer-line and buffer-column be current.
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173 (let ((goal-line (+ (* lines-per-row (1- a-row))
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174 (% buffer-line lines-per-row)))
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175 (goal-column (- buffer-column (% buffer-column field-width))))
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176 (forward-line (- goal-line buffer-line))
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177 (move-to-column-untabify goal-column)
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178 a-row))
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179
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180 (defun array-move-to-column (a-column)
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181 "Move to array column A-COLUMN preserving the current array row.
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182 Leave point at the beginning of the field and return the new array column."
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183 ;; Requires that buffer-line and buffer-column be current.
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184 (let ((goal-line (+ (- buffer-line (% buffer-line lines-per-row))
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185 (if rows-numbered 1 0)
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186 (floor (1- a-column) columns-per-line)))
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187 (goal-column (* field-width (% (1- a-column) columns-per-line))))
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188 (forward-line (- goal-line buffer-line))
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189 (move-to-column-untabify goal-column)
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190 a-column))
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191
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192 (defun array-move-one-row (sign)
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193 "Move one array row in direction SIGN (1 or -1).
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194 Leave point at the beginning of the field and return the new array row.
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195 If requested to move beyond the array bounds, signal an error."
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196 ;; Requires that buffer-line and buffer-column be current.
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197 (let ((goal-column (array-beginning-of-field))
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198 (array-row (or (array-current-row)
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199 (error "Cursor is not in a valid array cell."))))
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200 (cond ((and (= array-row max-row) (= sign 1))
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201 (error "End of array."))
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202 ((and (= array-row 1) (= sign -1))
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203 (error "Beginning of array."))
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204 (t
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205 (progn
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206 (forward-line (* sign lines-per-row))
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207 (move-to-column-untabify goal-column)
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208 (+ array-row sign))))))
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209
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210 (defun array-move-one-column (sign)
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211 "Move one array column in direction SIGN (1 or -1).
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212 Leave point at the beginning of the field and return the new array column.
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213 If requested to move beyond the array bounds, signal an error."
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214 ;; Requires that buffer-line and buffer-column be current.
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215 (let ((array-column (or (array-current-column)
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216 (error "Cursor is not in a valid array cell."))))
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217 (cond ((and (= array-column max-column) (= sign 1))
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218 (error "End of array."))
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219 ((and (= array-column 1) (= sign -1))
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220 (error "Beginning of array."))
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221 (t
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222 (cond
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223 ;; Going backward from first column on the line.
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224 ((and (= sign -1) (= 1 (% array-column columns-per-line)))
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225 (forward-line -1)
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226 (move-to-column-untabify
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227 (* field-width (1- columns-per-line))))
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228 ;; Going forward from last column on the line.
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229 ((and (= sign 1) (zerop (% array-column columns-per-line)))
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230 (forward-line 1))
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231 ;; Somewhere in the middle of the line.
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232 (t
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233 (move-to-column-untabify (+ (array-beginning-of-field)
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234 (* field-width sign)))))
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235 (+ array-column sign)))))
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236
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237 (defun array-normalize-cursor ()
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238 "Move the cursor to the first non-whitespace character in the field and,
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239 if necessary, scroll horizontally to keep the cursor in view."
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240 ;; Assumes point is at the beginning of the field.
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241 (let ((buffer-column (current-column)))
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242 (skip-chars-forward " \t"
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243 (1- (save-excursion (array-end-of-field t) (point))))
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244 (array-maybe-scroll-horizontally)))
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245
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246 (defun array-maybe-scroll-horizontally ()
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247 "If necessary, scroll horizontally to keep the cursor in view."
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248 ;; This is only called from array-normalize-cursor so
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249 ;; buffer-column will always be current.
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250 (let ((w-hscroll (window-hscroll))
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251 (w-width (window-width)))
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252 (cond
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253 ((and (>= buffer-column w-hscroll)
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254 (<= buffer-column (+ w-hscroll w-width)))
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255 ;; It's already visible. Do nothing.
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256 nil)
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257 ((> buffer-column (+ w-hscroll w-width))
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258 ;; It's to the right. Scroll left.
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259 (scroll-left (- (- buffer-column w-hscroll)
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260 (/ w-width 2))))
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261 (t
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262 ;; It's to the left. Scroll right.
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263 (scroll-right (+ (- w-hscroll buffer-column)
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264 (/ w-width 2)))))))
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265
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266
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267
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268 ;;; Movement commands.
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269
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270 (defun array-next-row (&optional arg)
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271 "Move down one array row, staying in the current array column.
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272 If optional ARG is given, move down ARG array rows."
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273 (interactive "p")
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274 (let ((buffer-line (current-line))
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275 (buffer-column (current-column)))
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276 (if (= (abs arg) 1)
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277 (array-move-one-row arg)
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278 (array-move-to-row
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279 (limit-index (+ (or (array-current-row)
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280 (error "Cursor is not in an array cell."))
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281 arg)
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282 max-row))))
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283 (array-normalize-cursor))
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284
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285 (defun array-previous-row (&optional arg)
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286 "Move up one array row, staying in the current array column.
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287 If optional ARG is given, move up ARG array rows."
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288 (interactive "p")
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289 (array-next-row (- arg)))
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290
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291 (defun array-forward-column (&optional arg)
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292 "Move forward one field, staying in the current array row.
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293 If optional ARG is given, move forward ARG array columns.
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294 If necessary, keep the cursor in the window by scrolling right or left."
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295 (interactive "p")
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296 (let ((buffer-line (current-line))
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297 (buffer-column (current-column)))
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298 (if (= (abs arg) 1)
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299 (array-move-one-column arg)
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300 (array-move-to-column
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301 (limit-index (+ (or (array-current-column)
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302 (error "Cursor is not in an array cell."))
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303 arg)
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304 max-column))))
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305 (array-normalize-cursor))
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306
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307 (defun array-backward-column (&optional arg)
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308 "Move backward one field, staying in the current array row.
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309 If optional ARG is given, move backward ARG array columns.
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310 If necessary, keep the cursor in the window by scrolling right or left."
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311 (interactive "p")
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312 (array-forward-column (- arg)))
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313
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314 (defun array-goto-cell (a-row a-column)
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315 "Go to array row A-ROW and array column A-COLUMN."
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316 (interactive "nArray row: \nnArray column: ")
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317 (array-move-to-cell
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318 (limit-index a-row max-row)
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319 (limit-index a-column max-column))
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320 (array-normalize-cursor))
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321
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322
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323
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324 ;;; Internal copying functions.
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325
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326 (defun array-field-string ()
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327 "Return the field string at the current cursor location."
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328 ;; Requires that buffer-column be current.
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329 (buffer-substring
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330 (save-excursion (array-beginning-of-field t) (point))
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331 (save-excursion (array-end-of-field t) (point))))
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332
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333 (defun array-copy-once-vertically (sign)
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334 "Copy the current field into one array row in direction SIGN (1 or -1).
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335 Leave point at the beginning of the field and return the new array row.
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336 If requested to move beyond the array bounds, signal an error."
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337 ;; Requires that buffer-line, buffer-column, and copy-string be current.
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338 (let ((a-row (array-move-one-row sign)))
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339 (let ((inhibit-quit t))
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340 (delete-region (point) (save-excursion (array-end-of-field t) (point)))
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341 (insert copy-string))
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342 (move-to-column buffer-column)
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343 a-row))
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344
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345 (defun array-copy-once-horizontally (sign)
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346 "Copy the current field into one array column in direction SIGN (1 or -1).
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347 Leave point at the beginning of the field and return the new array column.
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348 If requested to move beyond the array bounds, signal an error."
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349 ;; Requires that buffer-line, buffer-column, and copy-string be current.
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350 (let ((a-column (array-move-one-column sign)))
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351 (array-update-buffer-position)
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352 (let ((inhibit-quit t))
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353 (delete-region (point) (save-excursion (array-end-of-field t) (point)))
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354 (insert copy-string))
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355 (move-to-column buffer-column)
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356 a-column))
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357
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358 (defun array-copy-to-row (a-row)
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359 "Copy the current field vertically into every cell up to and including A-ROW.
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360 Leave point at the beginning of the field."
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361 ;; Requires that buffer-line, buffer-column, array-row, and
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362 ;; copy-string be current.
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363 (let* ((num (- a-row array-row))
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364 (count (abs num))
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365 (sign (if (zerop count) () (/ num count))))
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366 (while (> count 0)
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367 (array-move-one-row sign)
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368 (array-update-buffer-position)
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369 (let ((inhibit-quit t))
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370 (delete-region (point) (save-excursion (array-end-of-field t) (point)))
|
|
|
371 (insert copy-string))
|
|
|
372 (move-to-column buffer-column)
|
|
|
373 (setq count (1- count)))))
|
|
|
374
|
|
|
375 (defun array-copy-to-column (a-column)
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|
|
376 "Copy the current field horizontally into every cell up to and including
|
|
|
377 A-COLUMN. Leave point at the beginning of the field."
|
|
|
378 ;; Requires that buffer-line, buffer-column, array-column, and
|
|
|
379 ;; copy-string be current.
|
|
|
380 (let* ((num (- a-column array-column))
|
|
|
381 (count (abs num))
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|
|
382 (sign (if (zerop count) () (/ num count))))
|
|
|
383 (while (> count 0)
|
|
|
384 (array-move-one-column sign)
|
|
|
385 (array-update-buffer-position)
|
|
|
386 (let ((inhibit-quit t))
|
|
|
387 (delete-region (point) (save-excursion (array-end-of-field t) (point)))
|
|
|
388 (insert copy-string))
|
|
|
389 (move-to-column buffer-column)
|
|
|
390 (setq count (1- count)))))
|
|
|
391
|
|
|
392 (defun array-copy-to-cell (a-row a-column)
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|
|
393 "Copy the current field into the cell at A-ROW, A-COLUMN.
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|
|
394 Leave point at the beginning of the field."
|
|
|
395 ;; Requires that copy-string be current.
|
|
|
396 (array-move-to-cell a-row a-column)
|
|
|
397 (array-update-buffer-position)
|
|
|
398 (delete-region (point) (save-excursion (array-end-of-field t) (point)))
|
|
|
399 (insert copy-string)
|
|
|
400 (move-to-column buffer-column))
|
|
|
401
|
|
|
402
|
|
|
403
|
|
|
404 ;;; Commands for copying.
|
|
|
405
|
|
|
406 (defun array-copy-down (&optional arg)
|
|
|
407 "Copy the current field one array row down.
|
|
|
408 If optional ARG is given, copy down through ARG array rows."
|
|
|
409 (interactive "p")
|
|
|
410 (let* ((buffer-line (current-line))
|
|
|
411 (buffer-column (current-column))
|
|
|
412 (array-row (or (array-current-row)
|
|
|
413 (error "Cursor is not in a valid array cell.")))
|
|
|
414 (copy-string (array-field-string)))
|
|
|
415 (if (= (abs arg) 1)
|
|
|
416 (array-copy-once-vertically arg)
|
|
|
417 (array-copy-to-row
|
|
|
418 (limit-index (+ array-row arg) max-row))))
|
|
|
419 (array-normalize-cursor))
|
|
|
420
|
|
|
421 (defun array-copy-up (&optional arg)
|
|
|
422 "Copy the current field one array row up.
|
|
|
423 If optional ARG is given, copy up through ARG array rows."
|
|
|
424 (interactive "p")
|
|
|
425 (array-copy-down (- arg)))
|
|
|
426
|
|
|
427 (defun array-copy-forward (&optional arg)
|
|
|
428 "Copy the current field one array column to the right.
|
|
|
429 If optional ARG is given, copy through ARG array columns to the right."
|
|
|
430 (interactive "p")
|
|
|
431 (let* ((buffer-line (current-line))
|
|
|
432 (buffer-column (current-column))
|
|
|
433 (array-column (or (array-current-column)
|
|
|
434 (error "Cursor is not in a valid array cell.")))
|
|
|
435 (copy-string (array-field-string)))
|
|
|
436 (if (= (abs arg) 1)
|
|
|
437 (array-copy-once-horizontally arg)
|
|
|
438 (array-copy-to-column
|
|
|
439 (limit-index (+ array-column arg) max-column))))
|
|
|
440 (array-normalize-cursor))
|
|
|
441
|
|
|
442 (defun array-copy-backward (&optional arg)
|
|
|
443 "Copy the current field one array column to the left.
|
|
|
444 If optional ARG is given, copy through ARG array columns to the left."
|
|
|
445 (interactive "p")
|
|
|
446 (array-copy-forward (- arg)))
|
|
|
447
|
|
|
448 (defun array-copy-column-forward (&optional arg)
|
|
|
449 "Copy the entire current column in to the column to the right.
|
|
|
450 If optional ARG is given, copy through ARG array columns to the right."
|
|
|
451 (interactive "p")
|
|
|
452 (array-update-buffer-position)
|
|
|
453 (array-update-array-position)
|
|
|
454 (if (not array-column)
|
|
|
455 (error "Cursor is not in a valid array cell."))
|
|
|
456 (message "Working...")
|
|
|
457 (let ((this-row 0))
|
|
|
458 (while (< this-row max-row)
|
|
|
459 (setq this-row (1+ this-row))
|
|
|
460 (array-move-to-cell this-row array-column)
|
|
|
461 (array-update-buffer-position)
|
|
|
462 (let ((copy-string (array-field-string)))
|
|
|
463 (if (= (abs arg) 1)
|
|
|
464 (array-copy-once-horizontally arg)
|
|
|
465 (array-copy-to-column
|
|
|
466 (limit-index (+ array-column arg) max-column))))))
|
|
|
467 (message "Working...done")
|
|
|
468 (array-move-to-row array-row)
|
|
|
469 (array-normalize-cursor))
|
|
|
470
|
|
|
471 (defun array-copy-column-backward (&optional arg)
|
|
|
472 "Copy the entire current column one column to the left.
|
|
|
473 If optional ARG is given, copy through ARG columns to the left."
|
|
|
474 (interactive "p")
|
|
|
475 (array-copy-column-forward (- arg)))
|
|
|
476
|
|
|
477 (defun array-copy-row-down (&optional arg)
|
|
|
478 "Copy the entire current row one row down.
|
|
|
479 If optional ARG is given, copy through ARG rows down."
|
|
|
480 (interactive "p")
|
|
|
481 (array-update-buffer-position)
|
|
|
482 (array-update-array-position)
|
|
|
483 (if (not array-row)
|
|
|
484 (error "Cursor is not in a valid array cell."))
|
|
|
485 (cond
|
|
|
486 ((and (= array-row 1) (= arg -1))
|
|
|
487 (error "Beginning of array."))
|
|
|
488 ((and (= array-row max-row) (= arg 1))
|
|
|
489 (error "End of array."))
|
|
|
490 (t
|
|
|
491 (let* ((copy-string
|
|
|
492 (buffer-substring
|
|
|
493 (save-excursion (array-move-to-cell array-row 1)
|
|
|
494 (point))
|
|
|
495 (save-excursion (array-move-to-cell array-row max-column)
|
|
|
496 (forward-line 1)
|
|
|
497 (point))))
|
|
|
498 (this-row array-row)
|
|
|
499 (goal-row (limit-index (+ this-row arg) max-row))
|
|
|
500 (num (- goal-row this-row))
|
|
|
501 (count (abs num))
|
|
|
502 (sign (if (not (zerop count)) (/ num count))))
|
|
|
503 (while (> count 0)
|
|
|
504 (setq this-row (+ this-row sign))
|
|
|
505 (array-move-to-cell this-row 1)
|
|
|
506 (let ((inhibit-quit t))
|
|
|
507 (delete-region (point)
|
|
|
508 (save-excursion
|
|
|
509 (array-move-to-cell this-row max-column)
|
|
|
510 (forward-line 1)
|
|
|
511 (point)))
|
|
|
512 (insert copy-string))
|
|
|
513 (setq count (1- count)))
|
|
|
514 (array-move-to-cell goal-row (or array-column 1)))))
|
|
|
515 (array-normalize-cursor))
|
|
|
516
|
|
|
517 (defun array-copy-row-up (&optional arg)
|
|
|
518 "Copy the entire current array row into the row above.
|
|
|
519 If optional ARG is given, copy through ARG rows up."
|
|
|
520 (interactive "p")
|
|
|
521 (array-copy-row-down (- arg)))
|
|
|
522
|
|
|
523 (defun array-fill-rectangle ()
|
|
|
524 "Copy the field at mark into every cell between mark and point."
|
|
|
525 (interactive)
|
|
|
526 ;; Bind arguments.
|
|
|
527 (array-update-buffer-position)
|
|
|
528 (let ((p-row (or (array-current-row)
|
|
|
529 (error "Cursor is not in a valid array cell.")))
|
|
|
530 (p-column (or (array-current-column)
|
|
|
531 (error "Cursor is not in a valid array cell.")))
|
|
|
532 (m-row
|
|
|
533 (save-excursion
|
|
|
534 (exchange-point-and-mark)
|
|
|
535 (array-update-buffer-position)
|
|
|
536 (or (array-current-row)
|
|
|
537 (error "Mark is not in a valid array cell."))))
|
|
|
538 (m-column
|
|
|
539 (save-excursion
|
|
|
540 (exchange-point-and-mark)
|
|
|
541 (array-update-buffer-position)
|
|
|
542 (or (array-current-column)
|
|
|
543 (error "Mark is not in a valid array cell.")))))
|
|
|
544 (message "Working...")
|
|
|
545 (let ((top-row (min m-row p-row))
|
|
|
546 (bottom-row (max m-row p-row))
|
|
|
547 (left-column (min m-column p-column))
|
|
|
548 (right-column (max m-column p-column)))
|
|
|
549 ;; Do the first row.
|
|
|
550 (let ((copy-string
|
|
|
551 (save-excursion
|
|
|
552 (array-move-to-cell m-row m-column)
|
|
|
553 (array-update-buffer-position)
|
|
|
554 (array-field-string))))
|
|
|
555 (array-copy-to-cell top-row left-column)
|
|
|
556 (array-update-array-position top-row left-column)
|
|
|
557 (array-update-buffer-position)
|
|
|
558 (array-copy-to-column right-column))
|
|
|
559 ;; Do the rest of the rows.
|
|
|
560 (array-move-to-cell top-row left-column)
|
|
|
561 (let ((copy-string
|
|
|
562 (buffer-substring
|
|
|
563 (point)
|
|
|
564 (save-excursion
|
|
|
565 (array-move-to-cell top-row right-column)
|
|
|
566 (setq buffer-column (current-column))
|
|
|
567 (array-end-of-field t)
|
|
|
568 (point))))
|
|
|
569 (this-row top-row))
|
|
|
570 (while (/= this-row bottom-row)
|
|
|
571 (setq this-row (1+ this-row))
|
|
|
572 (array-move-to-cell this-row left-column)
|
|
|
573 (let ((inhibit-quit t))
|
|
|
574 (delete-region
|
|
|
575 (point)
|
|
|
576 (save-excursion
|
|
|
577 (array-move-to-cell this-row right-column)
|
|
|
578 (setq buffer-column (current-column))
|
|
|
579 (array-end-of-field t)
|
|
|
580 (point)))
|
|
|
581 (insert copy-string)))))
|
|
|
582 (message "Working...done")
|
|
|
583 (array-goto-cell p-row p-column)))
|
|
|
584
|
|
|
585
|
|
|
586
|
|
|
587 ;;; Reconfiguration of the array.
|
|
|
588
|
|
|
589 (defun array-make-template ()
|
|
|
590 "Create the template of an array."
|
|
|
591 (interactive)
|
|
|
592 ;; If there is a conflict between field-width and init-string, resolve it.
|
|
|
593 (let ((check t)
|
|
|
594 (len))
|
|
|
595 (while check
|
|
|
596 (setq init-field (read-input "Initial field value: "))
|
|
|
597 (setq len (length init-field))
|
|
|
598 (if (/= len field-width)
|
|
|
599 (if (y-or-n-p (format "Change field width to %d? " len))
|
|
|
600 (progn (setq field-width len)
|
|
|
601 (setq check nil)))
|
|
|
602 (setq check nil))))
|
|
|
603 (goto-char (point-min))
|
|
|
604 (message "Working...")
|
|
|
605 (let ((this-row 1))
|
|
|
606 ;; Loop through the rows.
|
|
|
607 (while (<= this-row max-row)
|
|
|
608 (if rows-numbered
|
|
|
609 (insert (format "%d:\n" this-row)))
|
|
|
610 (let ((this-column 1))
|
|
|
611 ;; Loop through the columns.
|
|
|
612 (while (<= this-column max-column)
|
|
|
613 (insert init-field)
|
|
|
614 (if (and (zerop (% this-column columns-per-line))
|
|
|
615 (/= this-column max-column))
|
|
|
616 (newline))
|
|
|
617 (setq this-column (1+ this-column))))
|
|
|
618 (setq this-row (1+ this-row))
|
|
|
619 (newline)))
|
|
|
620 (message "Working...done")
|
|
|
621 (array-goto-cell 1 1))
|
|
|
622
|
|
|
623 (defun array-reconfigure-rows (new-columns-per-line new-rows-numbered)
|
|
|
624 "Reconfigure the state of `rows-numbered' and `columns-per-line'.
|
|
|
625 NEW-COLUMNS-PER-LINE is the desired value of `columns-per-line' and
|
|
|
626 NEW-ROWS-NUMBERED (a character, either ?y or ?n) is the desired value
|
|
|
627 of rows-numbered."
|
|
|
628 (interactive "nColumns per line: \ncRows numbered? (y or n) ")
|
|
|
629 ;; Check on new-columns-per-line
|
|
|
630 (let ((check t))
|
|
|
631 (while check
|
|
|
632 (if (and (>= new-columns-per-line 1)
|
|
|
633 (<= new-columns-per-line max-column))
|
|
|
634 (setq check nil)
|
|
|
635 (setq new-columns-per-line
|
|
|
636 (string-to-int
|
|
|
637 (read-input
|
|
|
638 (format "Columns per line (1 - %d): " max-column)))))))
|
|
|
639 ;; Check on new-rows-numbered. It has to be done this way
|
|
|
640 ;; because interactive does not have y-or-n-p.
|
|
|
641 (cond
|
|
|
642 ((eq new-rows-numbered ?y)
|
|
|
643 (setq new-rows-numbered t))
|
|
|
644 ((eq new-rows-numbered ?n)
|
|
|
645 (setq new-rows-numbered nil))
|
|
|
646 (t
|
|
|
647 (setq new-rows-numbered (y-or-n-p "Rows numbered? "))))
|
|
|
648 (message "Working...")
|
|
|
649 (array-update-buffer-position)
|
|
|
650 (let* ((main-buffer (buffer-name (current-buffer)))
|
|
|
651 (temp-buffer (make-temp-name "Array"))
|
|
|
652 (temp-max-row max-row)
|
|
|
653 (temp-max-column max-column)
|
|
|
654 (old-rows-numbered rows-numbered)
|
|
|
655 (old-columns-per-line columns-per-line)
|
|
|
656 (old-lines-per-row lines-per-row)
|
|
|
657 (old-field-width field-width)
|
|
|
658 (old-line-length line-length)
|
|
|
659 (this-row 1))
|
|
|
660 (array-update-array-position)
|
|
|
661 ;; Do the cutting in a temporary buffer.
|
|
|
662 (copy-to-buffer temp-buffer (point-min) (point-max))
|
|
|
663 (set-buffer temp-buffer)
|
|
|
664 (goto-char (point-min))
|
|
|
665 (while (<= this-row temp-max-row)
|
|
|
666 ;; Deal with row number.
|
|
|
667 (cond
|
|
|
668 ((or (and old-rows-numbered new-rows-numbered)
|
|
|
669 (and (not old-rows-numbered) (not new-rows-numbered)))
|
|
|
670 ;; Nothing is changed.
|
|
|
671 ())
|
|
|
672 ((and old-rows-numbered (not new-rows-numbered))
|
|
|
673 ;; Delete the row number.
|
|
|
674 (kill-line 1))
|
|
|
675 (t
|
|
|
676 ;; Add the row number.
|
|
|
677 (insert-string (format "%d:\n" this-row))))
|
|
|
678 ;; Deal with the array columns in this row.
|
|
|
679 (cond
|
|
|
680 ((= old-columns-per-line new-columns-per-line)
|
|
|
681 ;; Nothing is changed. Go to the next row.
|
|
|
682 (forward-line (- old-lines-per-row (if old-rows-numbered 1 0))))
|
|
|
683 (t
|
|
|
684 ;; First expand the row. Then cut it up into new pieces.
|
|
|
685 (let ((newlines-to-be-removed
|
|
|
686 (floor (1- temp-max-column) old-columns-per-line))
|
|
|
687 (newlines-removed 0)
|
|
|
688 (newlines-to-be-added
|
|
|
689 (floor (1- temp-max-column) new-columns-per-line))
|
|
|
690 (newlines-added 0))
|
|
|
691 (while (< newlines-removed newlines-to-be-removed)
|
|
|
692 (move-to-column-untabify
|
|
|
693 (* (1+ newlines-removed) old-line-length))
|
|
|
694 (kill-line 1)
|
|
|
695 (setq newlines-removed (1+ newlines-removed)))
|
|
|
696 (beginning-of-line)
|
|
|
697 (while (< newlines-added newlines-to-be-added)
|
|
|
698 (move-to-column-untabify (* old-field-width new-columns-per-line))
|
|
|
699 (newline)
|
|
|
700 (setq newlines-added (1+ newlines-added)))
|
|
|
701 (forward-line 1))))
|
|
|
702 (setq this-row (1+ this-row)))
|
|
|
703 (let ((inhibit-quit t))
|
|
|
704 (set-buffer main-buffer)
|
|
|
705 (erase-buffer)
|
|
|
706 (insert-buffer temp-buffer)
|
|
|
707 ;; Update local variables.
|
|
|
708 (setq columns-per-line new-columns-per-line)
|
|
|
709 (setq rows-numbered new-rows-numbered)
|
|
|
710 (setq line-length (* old-field-width new-columns-per-line))
|
|
|
711 (setq lines-per-row
|
|
|
712 (+ (floor (1- temp-max-column) new-columns-per-line)
|
|
|
713 (if new-rows-numbered 2 1)))
|
|
|
714 (array-goto-cell (or array-row 1) (or array-column 1)))
|
|
|
715 (kill-buffer temp-buffer))
|
|
|
716 (message "Working...done"))
|
|
|
717
|
|
|
718 (defun array-expand-rows ()
|
|
|
719 "Expand the rows so each fits on one line and remove row numbers."
|
|
|
720 (interactive)
|
|
|
721 (array-reconfigure-rows max-column ?n))
|
|
|
722
|
|
|
723
|
|
|
724
|
|
|
725 ;;; Utilities.
|
|
|
726
|
|
|
727 (defun limit-index (index limit)
|
|
|
728 (cond ((< index 1) 1)
|
|
|
729 ((> index limit) limit)
|
|
|
730 (t index)))
|
|
|
731
|
|
|
732 (defun xor (pred1 pred2)
|
|
|
733 "Returns the logical exclusive or of predicates PRED1 and PRED2."
|
|
|
734 (and (or pred1 pred2)
|
|
|
735 (not (and pred1 pred2))))
|
|
|
736
|
|
|
737 (defun current-line ()
|
|
|
738 "Return the current buffer line at point. The first line is 0."
|
|
|
739 (save-excursion
|
|
|
740 (beginning-of-line)
|
|
|
741 (count-lines (point-min) (point))))
|
|
|
742
|
|
|
743 (defun move-to-column-untabify (column)
|
|
|
744 "Move to COLUMN on the current line, untabifying if necessary.
|
|
|
745 Return COLUMN."
|
|
|
746 (or (and (= column (move-to-column column))
|
|
|
747 column)
|
|
|
748 ;; There is a tab in the way.
|
|
|
749 (if respect-tabs
|
|
|
750 (error "There is a TAB character in the way.")
|
|
|
751 (progn
|
|
|
752 (untabify-backward)
|
|
|
753 (move-to-column column)))))
|
|
|
754
|
|
|
755 (defun untabify-backward ()
|
|
|
756 "Untabify the preceding tab."
|
|
|
757 (save-excursion
|
|
|
758 (let ((start (point)))
|
|
|
759 (backward-char 1)
|
|
|
760 (untabify (point) start))))
|
|
|
761
|
|
|
762
|
|
|
763
|
|
|
764 ;;; Array mode.
|
|
|
765
|
|
|
766 (defvar array-mode-map nil
|
|
|
767 "Keymap used in array mode.")
|
|
|
768
|
|
|
769 (if array-mode-map
|
|
|
770 ()
|
|
|
771 (setq array-mode-map (make-keymap))
|
|
|
772 ;; Bind keys.
|
|
|
773 (define-key array-mode-map "\M-ad" 'array-display-local-variables)
|
|
|
774 (define-key array-mode-map "\M-am" 'array-make-template)
|
|
|
775 (define-key array-mode-map "\M-ae" 'array-expand-rows)
|
|
|
776 (define-key array-mode-map "\M-ar" 'array-reconfigure-rows)
|
|
|
777 (define-key array-mode-map "\M-a=" 'array-what-position)
|
|
|
778 (define-key array-mode-map "\M-ag" 'array-goto-cell)
|
|
|
779 (define-key array-mode-map "\M-af" 'array-fill-rectangle)
|
|
|
780 (define-key array-mode-map "\C-n" 'array-next-row)
|
|
|
781 (define-key array-mode-map "\C-p" 'array-previous-row)
|
|
|
782 (define-key array-mode-map "\C-f" 'array-forward-column)
|
|
|
783 (define-key array-mode-map "\C-b" 'array-backward-column)
|
|
|
784 (define-key array-mode-map "\M-n" 'array-copy-down)
|
|
|
785 (define-key array-mode-map "\M-p" 'array-copy-up)
|
|
|
786 (define-key array-mode-map "\M-f" 'array-copy-forward)
|
|
|
787 (define-key array-mode-map "\M-b" 'array-copy-backward)
|
|
|
788 (define-key array-mode-map "\M-\C-n" 'array-copy-row-down)
|
|
|
789 (define-key array-mode-map "\M-\C-p" 'array-copy-row-up)
|
|
|
790 (define-key array-mode-map "\M-\C-f" 'array-copy-column-forward)
|
|
|
791 (define-key array-mode-map "\M-\C-b" 'array-copy-column-backward))
|
|
|
792
|
|
|
793 (put 'array-mode 'mode-class 'special)
|
|
|
794
|
|
|
795 (defun array-mode ()
|
|
|
796 "Major mode for editing arrays.
|
|
|
797
|
|
|
798 Array mode is a specialized mode for editing arrays. An array is
|
|
|
799 considered to be a two-dimensional set of strings. The strings are
|
|
|
800 NOT recognized as integers or real numbers.
|
|
|
801
|
|
|
802 The array MUST reside at the top of the buffer.
|
|
|
803
|
|
|
804 TABs are not respected, and may be converted into spaces at any time.
|
|
|
805 Setting the variable 'respect-tabs to non-nil will prevent TAB conversion,
|
|
|
806 but will cause many functions to give errors if they encounter one.
|
|
|
807
|
|
|
808 Upon entering array mode, you will be prompted for the values of
|
|
|
809 several variables. Others will be calculated based on the values you
|
|
2
|
810 supply. These variables are all local to the buffer. Other buffers
|
|
0
|
811 in array mode may have different values assigned to the variables.
|
|
|
812 The variables are:
|
|
|
813
|
|
|
814 Variables you assign:
|
|
|
815 max-row: The number of rows in the array.
|
|
|
816 max-column: The number of columns in the array.
|
|
|
817 columns-per-line: The number of columns in the array per line of buffer.
|
|
|
818 field-width: The width of each field, in characters.
|
|
|
819 rows-numbered: A logical variable describing whether to ignore
|
|
|
820 row numbers in the buffer.
|
|
|
821
|
|
|
822 Variables which are calculated:
|
|
|
823 line-length: The number of characters in a buffer line.
|
|
|
824 lines-per-row: The number of buffer lines used to display each row.
|
|
|
825
|
|
|
826 The following commands are available (an asterisk indicates it may
|
|
|
827 take a numeric prefix argument):
|
|
|
828
|
|
|
829 * \\<array-mode-map>\\[array-forward-column] Move forward one column.
|
|
|
830 * \\[array-backward-column] Move backward one column.
|
|
|
831 * \\[array-next-row] Move down one row.
|
|
|
832 * \\[array-previous-row] Move up one row.
|
|
|
833
|
|
|
834 * \\[array-copy-forward] Copy the current field into the column to the right.
|
|
|
835 * \\[array-copy-backward] Copy the current field into the column to the left.
|
|
|
836 * \\[array-copy-down] Copy the current field into the row below.
|
|
|
837 * \\[array-copy-up] Copy the current field into the row above.
|
|
|
838
|
|
|
839 * \\[array-copy-column-forward] Copy the current column into the column to the right.
|
|
|
840 * \\[array-copy-column-backward] Copy the current column into the column to the left.
|
|
|
841 * \\[array-copy-row-down] Copy the current row into the row below.
|
|
|
842 * \\[array-copy-row-up] Copy the current row into the row above.
|
|
|
843
|
|
|
844 \\[array-fill-rectangle] Copy the field at mark into every cell with row and column
|
|
|
845 between that of point and mark.
|
|
|
846
|
|
|
847 \\[array-what-position] Display the current array row and column.
|
|
|
848 \\[array-goto-cell] Go to a particular array cell.
|
|
|
849
|
|
|
850 \\[array-make-template] Make a template for a new array.
|
|
|
851 \\[array-reconfigure-rows] Reconfigure the array.
|
|
|
852 \\[array-expand-rows] Expand the array (remove row numbers and
|
|
|
853 newlines inside rows)
|
|
|
854
|
|
|
855 \\[array-display-local-variables] Display the current values of local variables.
|
|
|
856
|
|
|
857 Entering array mode calls the function `array-mode-hook'."
|
|
|
858
|
|
|
859 (interactive)
|
|
|
860 ;; Number of rows in the array.
|
|
|
861 (make-local-variable 'max-row)
|
|
|
862 ;; Number of columns in the array.
|
|
|
863 (make-local-variable 'max-column)
|
|
|
864 ;; Number of array columns per line.
|
|
|
865 (make-local-variable 'columns-per-line)
|
|
|
866 ;; Width of a field in the array.
|
|
|
867 (make-local-variable 'field-width)
|
|
|
868 ;; Are rows numbered in the buffer?
|
|
|
869 (make-local-variable 'rows-numbered)
|
|
|
870 ;; Length of a line in the array.
|
|
|
871 (make-local-variable 'line-length)
|
|
|
872 ;; Number of lines per array row.
|
|
|
873 (make-local-variable 'lines-per-row)
|
|
|
874 ;; Current line number of point in the buffer.
|
|
|
875 (make-local-variable 'buffer-line)
|
|
|
876 ;; Current column number of point in the buffer.
|
|
|
877 (make-local-variable 'buffer-column)
|
|
|
878 ;; Current array row location of point.
|
|
|
879 (make-local-variable 'array-row)
|
|
|
880 ;; Current array column location of point.
|
|
|
881 (make-local-variable 'array-column)
|
|
|
882 ;; Current field string being copied.
|
|
|
883 (make-local-variable 'copy-string)
|
|
|
884 ;; Should TAB conversion be prevented?
|
|
|
885 (make-local-variable 'respect-tabs)
|
|
|
886 (setq respect-tabs nil)
|
|
|
887 (array-init-local-variables)
|
|
|
888 (setq major-mode 'array-mode)
|
|
|
889 (setq mode-name "Array")
|
|
|
890 (force-mode-line-update)
|
|
|
891 (make-variable-buffer-local 'truncate-lines)
|
|
|
892 (setq truncate-lines t)
|
|
|
893 (setq overwrite-mode 'overwrite-mode-textual)
|
|
|
894 (use-local-map array-mode-map)
|
|
|
895 (run-hooks 'array-mode-hook))
|
|
|
896
|
|
|
897
|
|
|
898
|
|
|
899 ;;; Initialization functions. These are not interactive.
|
|
|
900
|
|
|
901 (defun array-init-local-variables ()
|
|
|
902 "Initialize the variables associated with the
|
|
|
903 array in this buffer."
|
|
|
904 (array-init-max-row)
|
|
|
905 (array-init-max-column)
|
|
|
906 (array-init-columns-per-line)
|
|
|
907 (array-init-field-width)
|
|
|
908 (array-init-rows-numbered)
|
|
|
909 (array-init-line-length)
|
|
|
910 (array-init-lines-per-row)
|
|
|
911 (message ""))
|
|
|
912
|
|
|
913 (defun array-init-max-row (&optional arg)
|
|
|
914 "Initialize the value of max-row."
|
|
|
915 (setq max-row
|
|
|
916 (or arg (string-to-int (read-input "Number of array rows: ")))))
|
|
|
917
|
|
|
918 (defun array-init-max-column (&optional arg)
|
|
|
919 "Initialize the value of max-column."
|
|
|
920 (setq max-column
|
|
|
921 (or arg (string-to-int (read-input "Number of array columns: ")))))
|
|
|
922
|
|
|
923 (defun array-init-columns-per-line (&optional arg)
|
|
|
924 "Initialize the value of columns-per-line."
|
|
|
925 (setq columns-per-line
|
|
|
926 (or arg (string-to-int (read-input "Array columns per line: ")))))
|
|
|
927
|
|
|
928 (defun array-init-field-width (&optional arg)
|
|
|
929 "Initialize the value of field-width."
|
|
|
930 (setq field-width
|
|
|
931 (or arg (string-to-int (read-input "Field width: ")))))
|
|
|
932
|
|
|
933 (defun array-init-rows-numbered (&optional arg)
|
|
|
934 "Initialize the value of rows-numbered."
|
|
|
935 (setq rows-numbered
|
|
|
936 (or arg (y-or-n-p "Rows numbered? "))))
|
|
|
937
|
|
|
938 (defun array-init-line-length (&optional arg)
|
|
|
939 "Initialize the value of line-length."
|
|
|
940 (setq line-length
|
|
|
941 (or arg
|
|
|
942 (* field-width columns-per-line))))
|
|
|
943
|
|
|
944 (defun array-init-lines-per-row (&optional arg)
|
|
|
945 "Initialize the value of lines-per-row."
|
|
|
946 (setq lines-per-row
|
|
|
947 (or arg
|
|
|
948 (+ (floor (1- max-column) columns-per-line)
|
|
|
949 (if rows-numbered 2 1)))))
|
|
|
950
|
|
|
951 ;;; array.el ends here
|
