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428
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1 /* Various functions for internationalizing XEmacs
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2 Copyright (C) 1993, 1994, 1995 Board of Trustees, University of Illinois.
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3
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation; either version 2, or (at your option) any
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9 later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Synched up with: Not in FSF. */
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22
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23 /* This stuff is far, far from working. */
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24
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25 #include <config.h>
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26 #include "lisp.h"
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27
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28 #include "bytecode.h"
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29 #include "device.h"
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30
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31 #if defined (HAVE_X_WINDOWS) && defined (HAVE_X11_XLOCALE_H)
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32 #include <X11/Xlocale.h>
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33 #else
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34 #ifdef HAVE_LOCALE_H
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35 #include <locale.h>
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36 #endif
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37 #endif
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38
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39 #ifdef I18N4
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40 #include <X11/Xlib.h>
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41
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42 unsigned long input_method_event_mask;
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43 Atom wc_atom;
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44
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45 /* init_input -- Set things up for i18n level 4 input.
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46 */
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47 void
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442
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48 init_input (const char *res_name, const char *res_class, Display *display)
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428
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49 {
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50 XIMStyles *styles;
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51 unsigned short i;
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52
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53 input_method = 0;
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54 input_method_style = 0;
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55 initial_input_context = 0;
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56 input_method_event_mask = 0;
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57
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58 input_method = XOpenIM (display, NULL,
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59 (char *) res_name, (char *) res_class);
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60
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61 if (!input_method)
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62 {
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63 stderr_out ("WARNING: XOpenIM() failed...no input server\n");
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64 return;
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65 }
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66
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67 /* Query input method for supported input styles and pick one.
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68 Right now, we choose a style which supports root-window preediting. */
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69 XGetIMValues (input_method, XNQueryInputStyle, &styles, NULL);
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70 for (i = 0; i < styles->count_styles; i++)
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71 {
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72 if (styles->supported_styles[i] == (XIMPreeditNothing|XIMStatusNothing))
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73 {
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74 input_method_style= styles->supported_styles[i];
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75 break;
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76 }
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77 }
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78
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79 if (!input_method_style)
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80 {
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81 stderr_out ("WARNING: Could not find suitable input style.\n");
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82 return;
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83 }
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84
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85 initial_input_context = XCreateIC (input_method,
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86 XNInputStyle, input_method_style,
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87 NULL);
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88 if (!initial_input_context)
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89 {
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90 stderr_out ("WARNING: Could not create input context.\n");
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91 return;
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92 }
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93
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94 XGetICValues (initial_input_context,
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95 XNFilterEvents, &input_method_event_mask,
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96 NULL);
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97
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98 /* Get a new atom for wide character client messages. */
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99 wc_atom = XInternAtom (display, "Wide Character Event", False);
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100 }
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101
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102
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103 /*static widechar_string composed_input_buf = EMPTY_WIDECHAR_STRING;*/
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104
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105 #define XIM_Composed_Text_BUFSIZE 64
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106 typedef struct XIM_Composed_Text {
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107 int size;
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108 wchar_t data [XIM_Composed_Text_BUFSIZE];
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109 } XIM_Composed_Text;
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110 static XIM_Composed_Text composed_input_buf = {XIM_Composed_Text_BUFSIZE, {0}};
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111 /*static wcidechar composed_input_buf [64] = {0};*/
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112 Window main_window; /* Convenient way to refer to main Era window. */
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113
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114 /* x_get_composed_input -- Process results of input method composition.
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115
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116 This function copies the results of the input method composition to
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117 composed_input_buf. Then for each character, a custom event of type
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118 wc_atom is sent with the character as its data.
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119
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120 It is probably more efficient to copy the composition results to some
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121 allocated memory and send a single event pointing to that memory.
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122 That would cut down on the event processing as well as allow quick
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123 insertion into the buffer of the whole string. It might require some
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124 care, though, to avoid fragmenting memory through the allocation and
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125 freeing of many small chunks. Maybe the existing system for
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126 (single-byte) string allocation can be used, multiplying the length by
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127 sizeof (wchar_t) to get the right size.
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128 */
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129 void
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130 x_get_composed_input (XKeyPressedEvent *x_key_event, XIC context,
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131 Display *display)
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132 {
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133 KeySym keysym;
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134 Status status;
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135 int len;
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136 int i;
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137 XClientMessageEvent new_event;
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138
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139 retry:
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140 len = XwcLookupString (context, x_key_event, composed_input_buf.data,
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141 composed_input_buf.size, &keysym, &status);
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142 switch (status)
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143 {
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144 case XBufferOverflow:
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145 /* GROW_WC_STRING (&composed_input_buf, 32); mrb */
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146 goto retry;
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147 case XLookupChars:
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148 break;
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149 default:
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150 abort ();
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151 }
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152
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153 new_event.type = ClientMessage;
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154 new_event.display = x_key_event->display;
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155 new_event.window = x_key_event->window;
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156 new_event.message_type = wc_atom;
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157 new_event.format = 32; /* 32-bit wide data */
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158 new_event.data.l[2] = new_event.data.l[3] = new_event.data.l[4] = 0L;
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159 new_event.data.l[0] = x_key_event->time;
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160 for (i = 0; i < len; i++) {
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161 new_event.data.l[1] = ((wchar_t *) composed_input_buf.data)[i];
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162 XSendEvent (display, main_window, False, 0L, (XEvent *) &new_event);
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163 }
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164 }
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165 #endif /* I18N4 */
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166
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167
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168 Lisp_Object Qdefer_gettext;
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169
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170 DEFUN ("ignore-defer-gettext", Fignore_defer_gettext, 1, 1, 0, /*
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444
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171 If OBJECT is of the form (defer-gettext "string"), return the string.
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428
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172 The purpose of the defer-gettext symbol is to identify strings which
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173 are translated when they are referenced instead of when they are defined.
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174 */
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444
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175 (object))
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428
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176 {
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444
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177 if (CONSP (object)
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178 && SYMBOLP (Fcar (object))
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179 && EQ (Fcar (object), Qdefer_gettext))
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180 return Fcar (Fcdr (object));
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428
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181 else
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444
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182 return object;
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428
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183 }
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184
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185 DEFUN ("gettext", Fgettext, 1, 1, 0, /*
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186 Look up STRING in the default message domain and return its translation.
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187 This function does nothing if I18N3 was not enabled when Emacs was compiled.
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188 */
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189 (string))
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190 {
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191 #ifdef I18N3
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192 /* #### What should happen here is:
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193
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194 1) If the string has no `string-translatable' property or its value
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195 is nil, no translation takes place. The `string-translatable' property
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196 only gets added when a constant string is read in from a .el or .elc
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197 file, to avoid excessive translation. (The user can also explicitly
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198 add this property to a string.)
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199 2) If the string's `string-translatable' property is a string,
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200 that string should be returned. `format' add this property.
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201 This allows translation to take place at the proper time but
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202 avoids excessive translation if the string is not destined for
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203 a translating stream. (See print_internal().)
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204 3) If gettext() returns the same string, then Fgettext() should return
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205 the same object, minus the 'string-translatable' property. */
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206
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207 if (STRINGP (string)) {
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208 #ifdef DEBUG_XEMACS
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209 stderr_out ("\nFgettext (%s) called.\n", XSTRING_DATA (string));
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210 #endif
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211 return build_string (gettext ((char *) XSTRING_DATA (string)));
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212 } else {
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213 return string;
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214 }
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215 #else
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216 return string;
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217 #endif
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218 }
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219
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220 #ifdef I18N3
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221
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222 /* #### add the function `force-gettext', perhaps in Lisp. This
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223 ignores the `string-translatable' property and simply calls gettext()
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224 on the string. Add the functions `set-string-translatable' and
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225 `set-stream-translating'. */
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226
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227 #endif
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228
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229 DEFUN ("dgettext", Fdgettext, 2, 2, 0, /*
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230 Look up STRING in the specified message domain and return its translation.
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231 This function does nothing if I18N3 was not enabled when Emacs was compiled.
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232 */
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233 (domain, string))
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234 {
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235 CHECK_STRING (domain);
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236 CHECK_STRING (string);
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237 #ifdef I18N3
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238 return build_string (dgettext ((char *) XSTRING_DATA (domain),
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239 (char *) XSTRING_DATA (string)));
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240 #else
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241 return string;
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242 #endif
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243 }
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244
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245 DEFUN ("bind-text-domain", Fbind_text_domain, 2, 2, 0, /*
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246 Associate a pathname with a message domain.
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247 Here's how the path to message files is constructed under SunOS 5.0:
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248 {pathname}/{LANG}/LC_MESSAGES/{domain}.mo
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249 This function does nothing if I18N3 was not enabled when Emacs was compiled.
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250 */
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251 (domain, pathname))
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252 {
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253 CHECK_STRING (domain);
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254 CHECK_STRING (pathname);
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255 #ifdef I18N3
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256 return build_string (bindtextdomain ((char *) XSTRING_DATA (domain),
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257 (char *) XSTRING_DATA (pathname)));
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258 #else
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259 return Qnil;
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260 #endif
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261 }
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262
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263 extern int load_in_progress;
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264
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265 DEFUN ("set-domain", Fset_domain, 1, 1, 0, /*
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266 Specify the domain used for translating messages in this source file.
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267 The domain declaration may only appear at top-level, and should precede
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268 all function and variable definitions.
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269
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270 The presence of this declaration in a compiled file effectively sets the
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271 domain of all functions and variables which are defined in that file.
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272 Bug: it has no effect on source (.el) files, only compiled (.elc) files.
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273 */
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274 (domain_name))
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275 {
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276 CHECK_STRING (domain_name);
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277 if (load_in_progress)
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278 return (domain_name);
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279 else
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280 return Qnil;
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281 }
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282
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283
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284 /************************************************************************/
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285 /* initialization */
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286 /************************************************************************/
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287
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288 void
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289 init_intl_very_early (void)
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290 {
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291 #if defined (I18N2) || defined (I18N3) || defined (I18N4)
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292 setlocale (LC_ALL, "");
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293 setlocale(LC_NUMERIC, "C");
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294 #endif
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295
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296 #ifdef I18N3
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297 textdomain ("emacs");
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298 #endif
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299 }
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300
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301 void
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302 syms_of_intl (void)
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303 {
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304 /* defer-gettext is defined as a symbol because when it is used in menu
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305 specification strings, it is not evaluated as a function by
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306 menu_item_descriptor_to_widget_value(). */
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563
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307 DEFSYMBOL (Qdefer_gettext);
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428
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308
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309 DEFSUBR (Fignore_defer_gettext);
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310 DEFSUBR (Fgettext);
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311 DEFSUBR (Fdgettext);
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312 DEFSUBR (Fbind_text_domain);
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313 DEFSUBR (Fset_domain);
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314 }
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315
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316 void
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317 vars_of_intl (void)
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318 {
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319 #ifdef I18N2
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320 Fprovide (intern ("i18n2"));
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321 #endif
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322 #ifdef I18N3
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323 Fprovide (intern ("i18n3"));
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324 #endif
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325 }
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