Commit | Line | Data |
---|---|---|
efeae993 RS |
1 | ;; Register commands for Emacs. |
2 | ;; Copyright (C) 1985 Free Software Foundation, Inc. | |
3 | ||
4 | ;; This file is part of GNU Emacs. | |
5 | ||
6 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
7 | ;; it under the terms of the GNU General Public License as published by | |
8 | ;; the Free Software Foundation; either version 1, or (at your option) | |
9 | ;; any later version. | |
10 | ||
11 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
12 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | ;; GNU General Public License for more details. | |
15 | ||
16 | ;; You should have received a copy of the GNU General Public License | |
17 | ;; along with GNU Emacs; see the file COPYING. If not, write to | |
18 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
19 | ||
20 | ||
21 | (defvar register-alist nil | |
22 | "Alist of elements (NAME . CONTENTS), one for each Emacs register. | |
23 | NAME is a character (a number). CONTENTS is a string, number, | |
24 | mark or list. A list represents a rectangle; its elements are strings.") | |
25 | ||
26 | (defun get-register (char) | |
27 | "Return contents of Emacs register named CHAR, or nil if none." | |
28 | (cdr (assq char register-alist))) | |
29 | ||
30 | (defun set-register (char value) | |
31 | "Set contents of Emacs register named CHAR to VALUE. | |
32 | Returns VALUE." | |
33 | (let ((aelt (assq char register-alist))) | |
34 | (if aelt | |
35 | (setcdr aelt value) | |
36 | (setq aelt (cons char value)) | |
37 | (setq register-alist (cons aelt register-alist))) | |
38 | value)) | |
39 | ||
40 | (defun point-to-register (char) | |
41 | "Store current location of point in a register. | |
42 | Argument is a character, naming the register." | |
43 | (interactive "cPoint to register: ") | |
44 | (set-register char (point-marker))) | |
45 | ||
46 | (fset 'register-to-point 'jump-to-register) | |
47 | (defun jump-to-register (char) | |
48 | "Move point to location stored in a register. | |
49 | Argument is a character, naming the register." | |
50 | (interactive "cJump to register: ") | |
51 | (let ((val (get-register char))) | |
52 | (if (markerp val) | |
53 | (progn | |
54 | (switch-to-buffer (marker-buffer val)) | |
55 | (goto-char val)) | |
56 | (error "Register doesn't contain a buffer position")))) | |
57 | ||
58 | ;(defun number-to-register (arg char) | |
59 | ; "Store a number in a register. | |
60 | ;Two args, NUMBER and REGISTER (a character, naming the register). | |
61 | ;If NUMBER is nil, digits in the buffer following point are read | |
62 | ;to get the number to store. | |
63 | ;Interactively, NUMBER is the prefix arg (none means nil)." | |
64 | ; (interactive "P\ncNumber to register: ") | |
65 | ; (set-register char | |
66 | ; (if arg | |
67 | ; (prefix-numeric-value arg) | |
68 | ; (if (looking-at "[0-9][0-9]*") | |
69 | ; (save-excursion | |
70 | ; (save-restriction | |
71 | ; (narrow-to-region (point) | |
72 | ; (progn (skip-chars-forward "0-9") | |
73 | ; (point))) | |
74 | ; (goto-char (point-min)) | |
75 | ; (read (current-buffer)))) | |
76 | ; 0)))) | |
77 | ||
78 | ;(defun increment-register (arg char) | |
79 | ; "Add NUMBER to the contents of register REGISTER. | |
80 | ;Interactively, NUMBER is the prefix arg (none means nil)." | |
81 | ; (interactive "p\ncNumber to register: ") | |
82 | ; (or (integerp (get-register char)) | |
83 | ; (error "Register does not contain a number")) | |
84 | ; (set-register char (+ arg (get-register char)))) | |
85 | ||
86 | (defun view-register (char) | |
87 | "Display what is contained in register named REGISTER. | |
88 | REGISTER is a character." | |
89 | (interactive "cView register: ") | |
90 | (let ((val (get-register char))) | |
91 | (if (null val) | |
92 | (message "Register %s is empty" (single-key-description char)) | |
93 | (with-output-to-temp-buffer "*Output*" | |
94 | (princ "Register ") | |
95 | (princ (single-key-description char)) | |
96 | (princ " contains ") | |
97 | (if (integerp val) | |
98 | (princ val) | |
99 | (if (markerp val) | |
100 | (progn | |
101 | (princ "a buffer position:\nbuffer ") | |
102 | (princ (buffer-name (marker-buffer val))) | |
103 | (princ ", position ") | |
104 | (princ (+ 0 val))) | |
105 | (if (consp val) | |
106 | (progn | |
107 | (princ "the rectangle:\n") | |
efeae993 RS |
108 | (while val |
109 | (princ (car val)) | |
110 | (terpri) | |
111 | (setq val (cdr val)))) | |
112 | (princ "the string:\n") | |
113 | (princ val)))))))) | |
114 | ||
115 | (defun insert-register (char &optional arg) | |
116 | "Insert contents of register REG. REG is a character. | |
117 | Normally puts point before and mark after the inserted text. | |
118 | If optional second arg is non-nil, puts mark before and point after. | |
119 | Interactively, second arg is non-nil if prefix arg is supplied." | |
120 | (interactive "cInsert register: \nP") | |
121 | (push-mark) | |
122 | (let ((val (get-register char))) | |
123 | (if (consp val) | |
124 | (insert-rectangle val) | |
125 | (if (stringp val) | |
126 | (insert val) | |
127 | (if (or (integerp val) (markerp val)) | |
128 | (princ (+ 0 val) (current-buffer)) | |
129 | (error "Register does not contain text"))))) | |
130 | (if (not arg) (exchange-point-and-mark))) | |
131 | ||
132 | (defun copy-to-register (char start end &optional delete-flag) | |
133 | "Copy region into register REG. | |
134 | With prefix arg, delete as well. | |
135 | Called from program, takes four args: | |
136 | REG, START, END and DELETE-FLAG. | |
137 | START and END are buffer positions indicating what to copy." | |
138 | (interactive "cCopy to register: \nr\nP") | |
139 | (set-register char (buffer-substring start end)) | |
140 | (if delete-flag (delete-region start end))) | |
141 | ||
142 | (defun append-to-register (char start end &optional delete-flag) | |
143 | "Append region to text in register REG. | |
144 | With prefix arg, delete as well. | |
145 | Called from program, takes four args: | |
146 | REG, START, END and DELETE-FLAG. | |
147 | START and END are buffer positions indicating what to append." | |
148 | (interactive "cAppend to register: \nr\nP") | |
149 | (or (stringp (get-register char)) | |
150 | (error "Register does not contain text")) | |
151 | (set-register char (concat (get-register char) | |
152 | (buffer-substring start end))) | |
153 | (if delete-flag (delete-region start end))) | |
154 | ||
155 | (defun prepend-to-register (char start end &optional delete-flag) | |
156 | "Prepend region to text in register REG. | |
157 | With prefix arg, delete as well. | |
158 | Called from program, takes four args: | |
159 | REG, START, END and DELETE-FLAG. | |
160 | START and END are buffer positions indicating what to prepend." | |
161 | (interactive "cPrepend to register: \nr\nP") | |
162 | (or (stringp (get-register char)) | |
163 | (error "Register does not contain text")) | |
164 | (set-register char (concat (buffer-substring start end) | |
165 | (get-register char))) | |
166 | (if delete-flag (delete-region start end))) | |
167 | ||
168 | (defun copy-rectangle-to-register (char start end &optional delete-flag) | |
169 | "Copy rectangular region into register REG. | |
170 | With prefix arg, delete as well. | |
171 | Called from program, takes four args: | |
172 | REG, START, END and DELETE-FLAG. | |
173 | START and END are buffer positions giving two corners of rectangle." | |
174 | (interactive "cCopy rectangle to register: \nr\nP") | |
175 | (set-register char | |
176 | (if delete-flag | |
177 | (delete-extract-rectangle start end) | |
178 | (extract-rectangle start end)))) |