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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 Copyright (C) 2000, 2001 Ben Wing.
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428
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4
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5 This file is part of XEmacs.
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6
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7 XEmacs is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 2, or (at your option) any
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10 later version.
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11
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12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with XEmacs; see the file COPYING. If not, write to
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19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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20 Boston, MA 02111-1307, USA. */
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21
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22 /* Synched up with: Not in FSF. */
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23
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24 #include <config.h>
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25 #include "lisp.h"
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26
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27 #if defined (HAVE_X_WINDOWS) && defined (HAVE_X11_XLOCALE_H)
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28 #include <X11/Xlocale.h>
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29 #else
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30 #ifdef HAVE_LOCALE_H
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31 #include <locale.h>
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32 #endif
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33 #endif
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34
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35 #ifdef HAVE_X_WINDOWS
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36 int init_x_locale (Lisp_Object locale);
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37 #endif
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38
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39 DEFUN ("current-locale", Fcurrent_locale, 0, 0, 0, /*
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40 Return the current locale.
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41 This is of the form LANG_COUNTRY.ENCODING, or LANG_COUNTRY, or LANG,
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42 or .ENCODING. Unfortunately, the meanings of these three values are
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43 system-dependent, and there is no universal agreement.
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44 */
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45 ())
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46 {
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47 Extbyte *loc;
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48
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49 loc = setlocale (LC_CTYPE, NULL);
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50 if (!loc)
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51 return Qnil;
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52 return build_ext_string (loc, Qctext);
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53 }
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54
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55 DEFUN ("set-current-locale", Fset_current_locale, 1, 1, 0, /*
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56 Set the user's current locale.
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57 Takes a string, the value passed to setlocale().
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58 This is of the form LANG_COUNTRY.ENCODING, or LANG_COUNTRY, or LANG,
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59 or .ENCODING. Unfortunately, the meanings of these three values are
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60 system-dependent, and there is no universal agreement. This function
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61 is meant to be called only from `set-language-environment', which
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62 keeps tables to figure out the values to use for particular systems.
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63
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64 If the empty string is passed in, the locale is initialized from
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65 environment variables.
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66
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67 Returns nil if the call failed (typically, an invalid locale was given).
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68 Otherwise, returns the locale, or possibly a more-specified version.
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69 */
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70 (locale))
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71 {
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72 Extbyte *loc;
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73
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74 CHECK_STRING (locale);
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75 /* RedHat 6.2 contains a locale called "Francais" with the C-cedilla
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76 encoded in ISO2022! */
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77 LISP_STRING_TO_EXTERNAL (locale, loc, Qctext);
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78 loc = setlocale (LC_ALL, loc);
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79 setlocale (LC_NUMERIC, "C");
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80 if (!loc)
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81 return Qnil;
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82 #ifdef HAVE_X_WINDOWS
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83 if (!init_x_locale (locale))
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84 {
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85 /* Locale not supported under X. Put it back. */
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86 setlocale (LC_ALL, loc);
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87 setlocale (LC_NUMERIC, "C");
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88 return Qnil;
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89 }
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90 #endif
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91
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92 return build_ext_string (loc, Qctext);
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93 }
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94
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95 #if 0
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96
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97 /* #### some old code that I really want to nuke, but I'm not completely
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98 sure what it did, so I'll leave it until we get around to implementing
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99 message-translation and decide whether the functionality that this
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100 is trying to support makes any sense. --ben */
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101
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102 Lisp_Object Qdefer_gettext;
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103
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104 xxDEFUN ("ignore-defer-gettext", Fignore_defer_gettext, 1, 1, 0, /*
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105 If OBJECT is of the form (defer-gettext "string"), return the string.
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106 The purpose of the defer-gettext symbol is to identify strings which
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107 are translated when they are referenced instead of when they are defined.
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108 */
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109 (object))
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110 {
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111 if (CONSP (object)
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112 && SYMBOLP (Fcar (object))
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113 && EQ (Fcar (object), Qdefer_gettext))
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114 return Fcar (Fcdr (object));
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115 else
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116 return object;
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117 }
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118
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119 #endif /* 0 */
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120
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121 DEFUN ("gettext", Fgettext, 1, 1, 0, /*
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122 Look up STRING in the default message domain and return its translation.
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123 This function does nothing if I18N3 was not enabled when Emacs was compiled.
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124 */
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125 (string))
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126 {
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127 #ifdef I18N3
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128 /* #### What should happen here is:
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129
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130 1) If the string has no `string-translatable' property or its value
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131 is nil, no translation takes place. The `string-translatable' property
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132 only gets added when a constant string is read in from a .el or .elc
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133 file, to avoid excessive translation. (The user can also explicitly
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134 add this property to a string.)
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135 2) If the string's `string-translatable' property is a string,
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136 that string should be returned. `format' add this property.
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137 This allows translation to take place at the proper time but
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138 avoids excessive translation if the string is not destined for
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139 a translating stream. (See print_internal().)
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140 3) If gettext() returns the same string, then Fgettext() should return
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141 the same object, minus the 'string-translatable' property. */
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142
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143 #endif
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144 return string;
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145 }
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146
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147 #ifdef I18N3
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148
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149 /* #### add the function `force-gettext', perhaps in Lisp. This
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150 ignores the `string-translatable' property and simply calls gettext()
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151 on the string. Add the functions `set-string-translatable' and
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152 `set-stream-translating'. */
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153
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154 #endif
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155
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156
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157
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158 /************************************************************************/
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159 /* initialization */
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160 /************************************************************************/
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161
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162 void
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163 init_intl (void)
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164 {
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165 if (initialized)
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166 {
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167 /* #### port to new error-trapping system when i sync up the code */
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168 int count = begin_gc_forbidden ();
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169 specbind (Qinhibit_quit, Qt);
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170 call0_with_handler (Qreally_early_error_handler,
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171 intern ("init-locale-at-early-startup"));
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172 /* Should be calling this here, but problems with
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173 `data-directory' and locating the files. See comment in
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174 mule-cmds.el:`init-mule-at-startup'.
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175
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176 call0_with_handler (Qreally_early_error_handler,
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177 intern ("init-unicode-at-early-startup"));
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178 */
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179 unbind_to (count);
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180 }
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428
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181 }
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182
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183 void
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184 syms_of_intl (void)
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185 {
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186 DEFSUBR (Fgettext);
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187 DEFSUBR (Fset_current_locale);
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188 DEFSUBR (Fcurrent_locale);
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189 }
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190
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191 void
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192 vars_of_intl (void)
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193 {
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194 #ifdef I18N3
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195 Fprovide (intern ("i18n3"));
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196 #endif
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197
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198 #ifdef MULE
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199 Fprovide (intern ("mule"));
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200 #endif /* MULE */
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201 }
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