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comparison src/intl.c @ 428:3ecd8885ac67 r21-2-22

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date Mon, 13 Aug 2007 11:28:15 +0200
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1 /* Various functions for internationalizing XEmacs
2 Copyright (C) 1993, 1994, 1995 Board of Trustees, University of Illinois.
3
4 This file is part of XEmacs.
5
6 XEmacs is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
9 later version.
10
11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with XEmacs; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
20
21 /* Synched up with: Not in FSF. */
22
23 /* This stuff is far, far from working. */
24
25 #include <config.h>
26 #include "lisp.h"
27
28 #include "bytecode.h"
29 #include "device.h"
30
31 #if defined (HAVE_X_WINDOWS) && defined (HAVE_X11_XLOCALE_H)
32 #include <X11/Xlocale.h>
33 #else
34 #ifdef HAVE_LOCALE_H
35 #include <locale.h>
36 #endif
37 #endif
38
39 #ifdef I18N4
40 #include <X11/Xlib.h>
41
42 unsigned long input_method_event_mask;
43 Atom wc_atom;
44
45 /* init_input -- Set things up for i18n level 4 input.
46 */
47 void
48 init_input (CONST char *res_name, CONST char *res_class, Display *display)
49 {
50 XIMStyles *styles;
51 unsigned short i;
52
53 input_method = 0;
54 input_method_style = 0;
55 initial_input_context = 0;
56 input_method_event_mask = 0;
57
58 input_method = XOpenIM (display, NULL,
59 (char *) res_name, (char *) res_class);
60
61 if (!input_method)
62 {
63 stderr_out ("WARNING: XOpenIM() failed...no input server\n");
64 return;
65 }
66
67 /* Query input method for supported input styles and pick one.
68 Right now, we choose a style which supports root-window preediting. */
69 XGetIMValues (input_method, XNQueryInputStyle, &styles, NULL);
70 for (i = 0; i < styles->count_styles; i++)
71 {
72 if (styles->supported_styles[i] == (XIMPreeditNothing|XIMStatusNothing))
73 {
74 input_method_style= styles->supported_styles[i];
75 break;
76 }
77 }
78
79 if (!input_method_style)
80 {
81 stderr_out ("WARNING: Could not find suitable input style.\n");
82 return;
83 }
84
85 initial_input_context = XCreateIC (input_method,
86 XNInputStyle, input_method_style,
87 NULL);
88 if (!initial_input_context)
89 {
90 stderr_out ("WARNING: Could not create input context.\n");
91 return;
92 }
93
94 XGetICValues (initial_input_context,
95 XNFilterEvents, &input_method_event_mask,
96 NULL);
97
98 /* Get a new atom for wide character client messages. */
99 wc_atom = XInternAtom (display, "Wide Character Event", False);
100 }
101
102
103 /*static widechar_string composed_input_buf = EMPTY_WIDECHAR_STRING;*/
104
105 #define XIM_Composed_Text_BUFSIZE 64
106 typedef struct XIM_Composed_Text {
107 int size;
108 wchar_t data [XIM_Composed_Text_BUFSIZE];
109 } XIM_Composed_Text;
110 static XIM_Composed_Text composed_input_buf = {XIM_Composed_Text_BUFSIZE, {0}};
111 /*static wcidechar composed_input_buf [64] = {0};*/
112 Window main_window; /* Convenient way to refer to main Era window. */
113
114 /* x_get_composed_input -- Process results of input method composition.
115
116 This function copies the results of the input method composition to
117 composed_input_buf. Then for each character, a custom event of type
118 wc_atom is sent with the character as its data.
119
120 It is probably more efficient to copy the composition results to some
121 allocated memory and send a single event pointing to that memory.
122 That would cut down on the event processing as well as allow quick
123 insertion into the buffer of the whole string. It might require some
124 care, though, to avoid fragmenting memory through the allocation and
125 freeing of many small chunks. Maybe the existing system for
126 (single-byte) string allocation can be used, multiplying the length by
127 sizeof (wchar_t) to get the right size.
128 */
129 void
130 x_get_composed_input (XKeyPressedEvent *x_key_event, XIC context,
131 Display *display)
132 {
133 KeySym keysym;
134 Status status;
135 int len;
136 int i;
137 XClientMessageEvent new_event;
138
139 retry:
140 len = XwcLookupString (context, x_key_event, composed_input_buf.data,
141 composed_input_buf.size, &keysym, &status);
142 switch (status)
143 {
144 case XBufferOverflow:
145 /* GROW_WC_STRING (&composed_input_buf, 32); mrb */
146 goto retry;
147 case XLookupChars:
148 break;
149 default:
150 abort ();
151 }
152
153 new_event.type = ClientMessage;
154 new_event.display = x_key_event->display;
155 new_event.window = x_key_event->window;
156 new_event.message_type = wc_atom;
157 new_event.format = 32; /* 32-bit wide data */
158 new_event.data.l[2] = new_event.data.l[3] = new_event.data.l[4] = 0L;
159 new_event.data.l[0] = x_key_event->time;
160 for (i = 0; i < len; i++) {
161 new_event.data.l[1] = ((wchar_t *) composed_input_buf.data)[i];
162 XSendEvent (display, main_window, False, 0L, (XEvent *) &new_event);
163 }
164 }
165 #endif /* I18N4 */
166
167
168 Lisp_Object Qdefer_gettext;
169
170 DEFUN ("ignore-defer-gettext", Fignore_defer_gettext, 1, 1, 0, /*
171 If OBJ is of the form (defer-gettext "string"), return the string.
172 The purpose of the defer-gettext symbol is to identify strings which
173 are translated when they are referenced instead of when they are defined.
174 */
175 (obj))
176 {
177 if (CONSP (obj) && SYMBOLP (Fcar (obj)) && EQ (Fcar (obj), Qdefer_gettext))
178 return Fcar (Fcdr (obj));
179 else
180 return obj;
181 }
182
183 DEFUN ("gettext", Fgettext, 1, 1, 0, /*
184 Look up STRING in the default message domain and return its translation.
185 This function does nothing if I18N3 was not enabled when Emacs was compiled.
186 */
187 (string))
188 {
189 #ifdef I18N3
190 /* #### What should happen here is:
191
192 1) If the string has no `string-translatable' property or its value
193 is nil, no translation takes place. The `string-translatable' property
194 only gets added when a constant string is read in from a .el or .elc
195 file, to avoid excessive translation. (The user can also explicitly
196 add this property to a string.)
197 2) If the string's `string-translatable' property is a string,
198 that string should be returned. `format' add this property.
199 This allows translation to take place at the proper time but
200 avoids excessive translation if the string is not destined for
201 a translating stream. (See print_internal().)
202 3) If gettext() returns the same string, then Fgettext() should return
203 the same object, minus the 'string-translatable' property. */
204
205 if (STRINGP (string)) {
206 #ifdef DEBUG_XEMACS
207 stderr_out ("\nFgettext (%s) called.\n", XSTRING_DATA (string));
208 #endif
209 return build_string (gettext ((char *) XSTRING_DATA (string)));
210 } else {
211 return string;
212 }
213 #else
214 return string;
215 #endif
216 }
217
218 #ifdef I18N3
219
220 /* #### add the function `force-gettext', perhaps in Lisp. This
221 ignores the `string-translatable' property and simply calls gettext()
222 on the string. Add the functions `set-string-translatable' and
223 `set-stream-translating'. */
224
225 #endif
226
227 DEFUN ("dgettext", Fdgettext, 2, 2, 0, /*
228 Look up STRING in the specified message domain and return its translation.
229 This function does nothing if I18N3 was not enabled when Emacs was compiled.
230 */
231 (domain, string))
232 {
233 CHECK_STRING (domain);
234 CHECK_STRING (string);
235 #ifdef I18N3
236 return build_string (dgettext ((char *) XSTRING_DATA (domain),
237 (char *) XSTRING_DATA (string)));
238 #else
239 return string;
240 #endif
241 }
242
243 DEFUN ("bind-text-domain", Fbind_text_domain, 2, 2, 0, /*
244 Associate a pathname with a message domain.
245 Here's how the path to message files is constructed under SunOS 5.0:
246 {pathname}/{LANG}/LC_MESSAGES/{domain}.mo
247 This function does nothing if I18N3 was not enabled when Emacs was compiled.
248 */
249 (domain, pathname))
250 {
251 CHECK_STRING (domain);
252 CHECK_STRING (pathname);
253 #ifdef I18N3
254 return build_string (bindtextdomain ((char *) XSTRING_DATA (domain),
255 (char *) XSTRING_DATA (pathname)));
256 #else
257 return Qnil;
258 #endif
259 }
260
261 extern int load_in_progress;
262
263 DEFUN ("set-domain", Fset_domain, 1, 1, 0, /*
264 Specify the domain used for translating messages in this source file.
265 The domain declaration may only appear at top-level, and should precede
266 all function and variable definitions.
267
268 The presence of this declaration in a compiled file effectively sets the
269 domain of all functions and variables which are defined in that file.
270 Bug: it has no effect on source (.el) files, only compiled (.elc) files.
271 */
272 (domain_name))
273 {
274 CHECK_STRING (domain_name);
275 if (load_in_progress)
276 return (domain_name);
277 else
278 return Qnil;
279 }
280
281
282 /************************************************************************/
283 /* initialization */
284 /************************************************************************/
285
286 void
287 init_intl_very_early (void)
288 {
289 #if defined (I18N2) || defined (I18N3) || defined (I18N4)
290 setlocale (LC_ALL, "");
291 setlocale(LC_NUMERIC, "C");
292 #endif
293
294 #ifdef I18N3
295 textdomain ("emacs");
296 #endif
297 }
298
299 void
300 syms_of_intl (void)
301 {
302 /* defer-gettext is defined as a symbol because when it is used in menu
303 specification strings, it is not evaluated as a function by
304 menu_item_descriptor_to_widget_value(). */
305 defsymbol (&Qdefer_gettext, "defer-gettext");
306
307 DEFSUBR (Fignore_defer_gettext);
308 DEFSUBR (Fgettext);
309 DEFSUBR (Fdgettext);
310 DEFSUBR (Fbind_text_domain);
311 DEFSUBR (Fset_domain);
312 }
313
314 void
315 vars_of_intl (void)
316 {
317 #ifdef I18N2
318 Fprovide (intern ("i18n2"));
319 #endif
320 #ifdef I18N3
321 Fprovide (intern ("i18n3"));
322 #endif
323 }