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428
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1 /* TTY-specific Lisp objects.
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2 Copyright (C) 1995 Board of Trustees, University of Illinois.
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3 Copyright (C) 1995, 1996 Ben Wing.
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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 #include "console-tty.h"
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28 #include "insdel.h"
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29 #include "objects-tty.h"
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30 #ifdef MULE
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31 #include "device.h"
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32 #include "mule-charset.h"
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33 #endif
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34
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35 /* An alist mapping from color names to a cons of (FG-STRING, BG-STRING). */
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36 Lisp_Object Vtty_color_alist;
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37 #if 0 /* This stuff doesn't quite work yet */
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38 Lisp_Object Vtty_dynamic_color_fg;
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39 Lisp_Object Vtty_dynamic_color_bg;
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40 #endif
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41
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42 DEFUN ("register-tty-color", Fregister_tty_color, 3, 3, 0, /*
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43 Register COLOR as a recognized TTY color.
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44 COLOR should be a string.
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45 Strings FG-STRING and BG-STRING should specify the escape sequences to
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46 set the foreground and background to the given color, respectively.
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47 */
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48 (color, fg_string, bg_string))
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49 {
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50 CHECK_STRING (color);
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51 CHECK_STRING (fg_string);
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52 CHECK_STRING (bg_string);
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53
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54 color = Fintern (color, Qnil);
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55 Vtty_color_alist = Fremassq (color, Vtty_color_alist);
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56 Vtty_color_alist = Fcons (Fcons (color, Fcons (fg_string, bg_string)),
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57 Vtty_color_alist);
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58
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59 return Qnil;
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60 }
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61
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62 DEFUN ("unregister-tty-color", Funregister_tty_color, 1, 1, 0, /*
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63 Unregister COLOR as a recognized TTY color.
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64 */
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65 (color))
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66 {
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67 CHECK_STRING (color);
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68
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69 color = Fintern (color, Qnil);
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70 Vtty_color_alist = Fremassq (color, Vtty_color_alist);
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71 return Qnil;
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72 }
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73
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74 DEFUN ("find-tty-color", Ffind_tty_color, 1, 1, 0, /*
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75 Look up COLOR in the list of registered TTY colors.
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76 If it is found, return a list (FG-STRING BG-STRING) of the escape
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77 sequences used to set the foreground and background to the color, respectively.
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78 If it is not found, return nil.
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79 */
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80 (color))
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81 {
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82 Lisp_Object result;
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83
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84 CHECK_STRING (color);
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85
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86 result = Fassq (Fintern (color, Qnil), Vtty_color_alist);
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87 if (!NILP (result))
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88 return list2 (Fcar (Fcdr (result)), Fcdr (Fcdr (result)));
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89 else
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90 return Qnil;
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91 }
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92
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93 DEFUN ("tty-color-list", Ftty_color_list, 0, 0, 0, /*
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94 Return a list of the registered TTY colors.
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95 */
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96 ())
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97 {
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98 Lisp_Object result = Qnil;
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99 Lisp_Object rest;
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100
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101 LIST_LOOP (rest, Vtty_color_alist)
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102 {
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103 result = Fcons (Fsymbol_name (XCAR (XCAR (rest))), result);
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104 }
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105
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106 return Fnreverse (result);
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107 }
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108
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109 #if 0
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110
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111 /* This approach is too simplistic. The problem is that the
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112 dynamic color settings apply to *all* text in the default color,
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113 not just the text output after the escape sequence has been given. */
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114
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115 DEFUN ("set-tty-dynamic-color-specs", Fset_tty_dynamic_color_specs, 2, 2, 0, /*
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116 Set the dynamic color specifications for TTY's.
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117 FG and BG should be either nil or vaguely printf-like strings,
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118 where each occurrence of %s is replaced with the color name and each
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119 occurrence of %% is replaced with a single % character.
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120 */
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121 (fg, bg))
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122 {
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123 if (!NILP (fg))
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124 CHECK_STRING (fg);
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125 if (!NILP (bg))
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126 CHECK_STRING (bg);
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127
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128 Vtty_dynamic_color_fg = fg;
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129 Vtty_dynamic_color_bg = bg;
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130
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131 return Qnil;
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132 }
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133
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134 DEFUN ("tty-dynamic-color-specs", Ftty_dynamic_color_specs, 0, 0, 0, /*
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135 Return the dynamic color specifications for TTY's as a list of (FG BG).
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136 See `set-tty-dynamic-color-specs'.
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137 */
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138 ())
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139 {
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140 return list2 (Vtty_dynamic_color_fg, Vtty_dynamic_color_bg);
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141 }
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142
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143 #endif /* 0 */
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144
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145 static int
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440
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146 tty_initialize_color_instance (Lisp_Color_Instance *c, Lisp_Object name,
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578
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147 Lisp_Object device, Error_Behavior errb)
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428
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148 {
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149 Lisp_Object result;
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150
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151 name = Fintern (name, Qnil);
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152 result = assq_no_quit (name, Vtty_color_alist);
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153
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154 if (NILP (result))
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155 {
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156 #if 0
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157 if (!STRINGP (Vtty_dynamic_color_fg)
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158 && !STRINGP (Vtty_dynamic_color_bg))
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159 #endif
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160 return 0;
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161 }
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162
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163 /* Don't allocate the data until we're sure that we will succeed. */
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164 c->data = xnew (struct tty_color_instance_data);
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165 COLOR_INSTANCE_TTY_SYMBOL (c) = name;
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166
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167 return 1;
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168 }
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169
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170 static void
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440
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171 tty_mark_color_instance (Lisp_Color_Instance *c)
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428
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172 {
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173 mark_object (COLOR_INSTANCE_TTY_SYMBOL (c));
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174 }
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175
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176 static void
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440
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177 tty_print_color_instance (Lisp_Color_Instance *c,
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428
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178 Lisp_Object printcharfun,
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179 int escapeflag)
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180 {
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181 }
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182
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183 static void
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440
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184 tty_finalize_color_instance (Lisp_Color_Instance *c)
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428
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185 {
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186 if (c->data)
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187 xfree (c->data);
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188 }
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189
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190 static int
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440
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191 tty_color_instance_equal (Lisp_Color_Instance *c1,
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192 Lisp_Color_Instance *c2,
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428
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193 int depth)
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194 {
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195 return (EQ (COLOR_INSTANCE_TTY_SYMBOL (c1),
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196 COLOR_INSTANCE_TTY_SYMBOL (c2)));
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197 }
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198
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199 static unsigned long
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440
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200 tty_color_instance_hash (Lisp_Color_Instance *c, int depth)
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428
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201 {
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202 return LISP_HASH (COLOR_INSTANCE_TTY_SYMBOL (c));
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203 }
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204
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205 static int
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206 tty_valid_color_name_p (struct device *d, Lisp_Object color)
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207 {
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208 return (!NILP (assoc_no_quit (Fintern (color, Qnil), Vtty_color_alist)));
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209 #if 0
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210 || STRINGP (Vtty_dynamic_color_fg)
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211 || STRINGP (Vtty_dynamic_color_bg)
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212 #endif
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213 }
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214
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215
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216 static int
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440
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217 tty_initialize_font_instance (Lisp_Font_Instance *f, Lisp_Object name,
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578
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218 Lisp_Object device, Error_Behavior errb)
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428
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219 {
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220 Bufbyte *str = XSTRING_DATA (name);
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221 Lisp_Object charset = Qnil;
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222
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442
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223 if (strncmp ((const char *) str, "normal", 6))
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428
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224 return 0;
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225 str += 6;
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226 if (*str)
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227 {
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228 #ifdef MULE
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229 if (*str != '/')
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230 return 0;
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231 str++;
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442
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232 charset = Ffind_charset (intern ((const char *) str));
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428
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233 if (NILP (charset))
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234 return 0;
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235 #else
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236 return 0;
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237 #endif
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238 }
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239
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240 /* Don't allocate the data until we're sure that we will succeed. */
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241 f->data = xnew (struct tty_font_instance_data);
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242 FONT_INSTANCE_TTY_CHARSET (f) = charset;
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243 #ifdef MULE
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244 if (CHARSETP (charset))
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245 f->width = XCHARSET_COLUMNS (charset);
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246 else
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247 #endif
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248 f->width = 1;
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249
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250 f->proportional_p = 0;
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251 f->ascent = f->height = 1;
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252 f->descent = 0;
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253
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254 return 1;
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255 }
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256
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257 static void
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440
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258 tty_mark_font_instance (Lisp_Font_Instance *f)
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428
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259 {
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260 mark_object (FONT_INSTANCE_TTY_CHARSET (f));
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261 }
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262
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263 static void
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440
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264 tty_print_font_instance (Lisp_Font_Instance *f,
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428
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265 Lisp_Object printcharfun,
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266 int escapeflag)
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267 {
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268 }
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269
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270 static void
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440
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271 tty_finalize_font_instance (Lisp_Font_Instance *f)
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428
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272 {
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273 if (f->data)
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274 xfree (f->data);
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275 }
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276
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277 static Lisp_Object
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278 tty_list_fonts (Lisp_Object pattern, Lisp_Object device)
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279 {
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280 return list1 (build_string ("normal"));
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281 }
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282
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283 #ifdef MULE
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284
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285 static int
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286 tty_font_spec_matches_charset (struct device *d, Lisp_Object charset,
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442
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287 const Bufbyte *nonreloc, Lisp_Object reloc,
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428
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288 Bytecount offset, Bytecount length)
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289 {
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442
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290 const Bufbyte *the_nonreloc = nonreloc;
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428
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291
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292 if (!the_nonreloc)
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293 the_nonreloc = XSTRING_DATA (reloc);
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294 fixup_internal_substring (nonreloc, reloc, offset, &length);
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295 the_nonreloc += offset;
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296
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297 if (UNBOUNDP (charset))
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298 return !memchr (the_nonreloc, '/', length);
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442
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299 the_nonreloc = (const Bufbyte *) memchr (the_nonreloc, '/', length);
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428
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300 if (!the_nonreloc)
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301 return 0;
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302 the_nonreloc++;
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303 {
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440
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304 Lisp_String *s = symbol_name (XSYMBOL (XCHARSET_NAME (charset)));
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442
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305 return !strcmp ((const char *) the_nonreloc,
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306 (const char *) string_data (s));
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428
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307 }
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308 }
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309
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310 /* find a font spec that matches font spec FONT and also matches
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311 (the registry of) CHARSET. */
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312 static Lisp_Object
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313 tty_find_charset_font (Lisp_Object device, Lisp_Object font,
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314 Lisp_Object charset)
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315 {
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316 Bufbyte *fontname = XSTRING_DATA (font);
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317
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442
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318 if (strchr ((const char *) fontname, '/'))
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428
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319 {
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320 if (tty_font_spec_matches_charset (XDEVICE (device), charset, 0,
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321 font, 0, -1))
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322 return font;
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323 return Qnil;
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324 }
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325
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326 if (UNBOUNDP (charset))
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327 return font;
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328
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329 return concat3 (font, build_string ("/"),
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330 Fsymbol_name (XCHARSET_NAME (charset)));
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331 }
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332
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333 #endif /* MULE */
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334
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335
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336 /************************************************************************/
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337 /* initialization */
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338 /************************************************************************/
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339
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340 void
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341 syms_of_objects_tty (void)
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342 {
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343 DEFSUBR (Fregister_tty_color);
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344 DEFSUBR (Funregister_tty_color);
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345 DEFSUBR (Ffind_tty_color);
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346 DEFSUBR (Ftty_color_list);
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347 #if 0
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348 DEFSUBR (Fset_tty_dynamic_color_specs);
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349 DEFSUBR (Ftty_dynamic_color_specs);
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350 #endif
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351 }
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352
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353 void
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354 console_type_create_objects_tty (void)
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355 {
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356 /* object methods */
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357 CONSOLE_HAS_METHOD (tty, initialize_color_instance);
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358 CONSOLE_HAS_METHOD (tty, mark_color_instance);
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359 CONSOLE_HAS_METHOD (tty, print_color_instance);
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360 CONSOLE_HAS_METHOD (tty, finalize_color_instance);
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361 CONSOLE_HAS_METHOD (tty, color_instance_equal);
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362 CONSOLE_HAS_METHOD (tty, color_instance_hash);
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363 CONSOLE_HAS_METHOD (tty, valid_color_name_p);
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364
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365 CONSOLE_HAS_METHOD (tty, initialize_font_instance);
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366 CONSOLE_HAS_METHOD (tty, mark_font_instance);
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367 CONSOLE_HAS_METHOD (tty, print_font_instance);
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368 CONSOLE_HAS_METHOD (tty, finalize_font_instance);
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369 CONSOLE_HAS_METHOD (tty, list_fonts);
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370 #ifdef MULE
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371 CONSOLE_HAS_METHOD (tty, font_spec_matches_charset);
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372 CONSOLE_HAS_METHOD (tty, find_charset_font);
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373 #endif
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374 }
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375
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376 void
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377 vars_of_objects_tty (void)
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378 {
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379 staticpro (&Vtty_color_alist);
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380 Vtty_color_alist = Qnil;
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381
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382 #if 0
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383 staticpro (&Vtty_dynamic_color_fg);
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384 Vtty_dynamic_color_fg = Qnil;
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385
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386 staticpro (&Vtty_dynamic_color_bg);
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387 Vtty_dynamic_color_bg = Qnil;
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388 #endif
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389 }
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