1;;; isearch-x.el --- extended isearch handling commands
2
3;; Copyright (C) 1997, 2001, 2002, 2003, 2004, 2005, 2006, 2007
4;;   Free Software Foundation, Inc.
5;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
6;;   2005, 2006, 2007
7;;   National Institute of Advanced Industrial Science and Technology (AIST)
8;;   Registration Number H14PRO021
9
10;; Keywords: multilingual, isearch
11
12;; Author: Kenichi HANDA <handa@etl.go.jp>
13;; Maintainer: Kenichi HANDA <handa@etl.go.jp>
14
15;; This file is part of GNU Emacs.
16
17;; GNU Emacs is free software; you can redistribute it and/or modify
18;; it under the terms of the GNU General Public License as published by
19;; the Free Software Foundation; either version 2, or (at your option)
20;; any later version.
21
22;; GNU Emacs is distributed in the hope that it will be useful,
23;; but WITHOUT ANY WARRANTY; without even the implied warranty of
24;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
25;; GNU General Public License for more details.
26
27;; You should have received a copy of the GNU General Public License
28;; along with GNU Emacs; see the file COPYING.  If not, write to the
29;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
30;; Boston, MA 02110-1301, USA.
31
32;;; Commentary:
33
34;;; Code:
35
36;;;###autoload
37(defun isearch-toggle-specified-input-method ()
38  "Select an input method and turn it on in interactive search."
39  (interactive)
40  (let ((overriding-terminal-local-map nil))
41    (toggle-input-method t))
42  (setq isearch-input-method-function input-method-function
43	isearch-input-method-local-p t)
44  (setq input-method-function nil)
45  (isearch-update))
46
47;;;###autoload
48(defun isearch-toggle-input-method ()
49  "Toggle input method in interactive search."
50  (interactive)
51  (let ((overriding-terminal-local-map nil))
52    (toggle-input-method))
53  (setq isearch-input-method-function input-method-function
54	isearch-input-method-local-p t)
55  (setq input-method-function nil)
56  (isearch-update))
57
58(defvar isearch-minibuffer-local-map
59  (let ((map (copy-keymap minibuffer-local-map)))
60    (define-key map [with-keyboard-coding] 'isearch-with-keyboard-coding)
61    (define-key map [with-input-method] 'isearch-with-input-method)
62    map)
63  "Keymap to use in minibuffer for multibyte character inputting in isearch.")
64
65;; Exit from recursive edit safely.  Set in `after-change-functions'
66;; by isearch-with-keyboard-coding.
67(defun isearch-exit-recursive-edit (start end length)
68  (interactive)
69  (throw 'exit nil))
70
71;; Simulate character decoding by the keyboard coding system in the
72;; current buffer (minibuffer).  As soon as a character is inserted,
73;; it exits from minibuffer.
74
75(defun isearch-with-keyboard-coding ()
76  (interactive)
77  (let ((after-change-functions '(isearch-exit-recursive-edit)))
78    (recursive-edit))
79  (exit-minibuffer))
80
81;; Simulate the work of the current input method in the current buffer
82;; (minibuffer).
83
84(defun isearch-with-input-method ()
85  (interactive)
86  (let ((key (car unread-command-events))
87	events)
88    (setq unread-command-events (cdr unread-command-events)
89	  events (funcall input-method-function key))
90    ;; EVENTS is a list of events the input method has generated.  It
91    ;; contains a character event and/or the special event
92    ;; `compose-last-chars'.  We extract only character events and
93    ;; insert the corresponding characters.
94    (while events
95      (if (integerp (car events)) (insert (car events)))
96      (setq events (cdr events)))
97    (exit-minibuffer)))
98
99;;;###autoload
100(defun isearch-process-search-multibyte-characters (last-char)
101  (if (eq this-command 'isearch-printing-char)
102      (let ((overriding-terminal-local-map nil)
103	    (prompt (isearch-message-prefix))
104	    (minibuffer-local-map isearch-minibuffer-local-map)
105	    str junk-hist)
106
107	;; PROMPT contains text-properties from
108	;; `minibuffer-prompt-properties', and some of these can screw up
109	;; its use in `read-string' below (specifically, a read-only
110	;; property will cause it to signal an error), so strip them here;
111	;; read-string will add the same properties itself anyway.
112	;;
113	(set-text-properties 0 (length prompt) nil prompt)
114
115	(if isearch-input-method-function
116	    (let (;; Let input method work rather tersely.
117		  (input-method-verbose-flag nil))
118	      (setq unread-command-events
119		    (cons 'with-input-method
120			  (cons last-char unread-command-events))
121		    ;; Inherit current-input-method in a minibuffer.
122		    str (read-string prompt isearch-message 'junk-hist nil t))
123	      (if (or (not str) (< (length str) (length isearch-message)))
124		  ;; All inputs were deleted while the input method
125		  ;; was working.
126		  (setq str "")
127		(setq str (substring str (length isearch-message)))
128		(if (and (= (length str) 1)
129			 (= (aref str 0) last-char)
130			 (>= last-char 128))
131		    ;; The input method couldn't handle LAST-CHAR.
132		    (setq str nil)))))
133
134	(if (and (not str) (keyboard-coding-system))
135	    (setq unread-command-events
136		  (cons 'with-keyboard-coding
137			(cons last-char unread-command-events))
138		  str (read-string prompt nil 'junk-hist)))
139
140	(if (and str (> (length str) 0))
141	    (let ((unread-command-events nil))
142	      (isearch-process-search-string str str))
143	  (isearch-update)))
144    (isearch-process-search-char last-char)))
145
146;;; arch-tag: 1a90a6cf-2cb2-477a-814a-9ff895852822
147;;; isearch-x.el ends here
148