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1 /* Console functions for X windows.
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2 Copyright (C) 1996 Ben Wing.
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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 /* Authorship:
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24
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25 Ben Wing: January 1996, for 19.14.
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26 */
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27
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28 #include <config.h>
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29 #include "lisp.h"
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30
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31 #include "console-x.h"
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32 #include "process.h" /* canonicalize_host_name */
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33 #include "redisplay.h" /* for display_arg */
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34
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35 DEFINE_CONSOLE_TYPE (x);
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36
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37 static int
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38 x_initially_selected_for_input (struct console *con)
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39 {
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40 return 1;
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41 }
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42
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43 static void
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44 split_up_display_spec (Lisp_Object display, int *hostname_length,
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45 int *display_length, int *screen_length)
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46 {
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47 char *dotptr;
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48
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16
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49 dotptr = strrchr ((char *) XSTRING_DATA (display), ':');
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0
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50 if (!dotptr)
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51 {
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16
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52 *hostname_length = XSTRING_LENGTH (display);
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0
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53 *display_length = 0;
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54 }
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55 else
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56 {
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16
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57 *hostname_length = dotptr - (char *) XSTRING_DATA (display);
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0
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58
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59 dotptr = strchr (dotptr, '.');
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60 if (dotptr)
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16
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61 *display_length = (dotptr - (char *) XSTRING_DATA (display)
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0
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62 - *hostname_length);
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63 else
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64 *display_length = XSTRING_LENGTH (display) - *hostname_length;
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0
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65 }
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66
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67 *screen_length = (XSTRING_LENGTH (display) - *display_length
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0
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68 - *hostname_length);
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69 }
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70
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71 /* Remember, in all of the following functions, we have to verify
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72 the integrity of our input, because the generic functions don't. */
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73
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74 static Lisp_Object
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75 x_device_to_console_connection (Lisp_Object connection, Error_behavior errb)
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76 {
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77 /* Strip the trailing .# off of the connection, if it's there. */
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78
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79 if (NILP (connection))
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80 return Qnil;
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81 else
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82 {
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83 int hostname_length, display_length, screen_length;
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84
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85 if (!ERRB_EQ (errb, ERROR_ME))
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86 {
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87 if (!STRINGP (connection))
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88 return Qunbound;
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89 }
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90 else
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91 CHECK_STRING (connection);
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92
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93 split_up_display_spec (connection, &hostname_length, &display_length,
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94 &screen_length);
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95 connection = make_string (XSTRING_DATA (connection),
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0
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96 hostname_length + display_length);
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97 }
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98
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99 return connection;
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100 }
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101
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102 static Lisp_Object
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103 get_display_arg_connection (void)
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104 {
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105 CONST char *disp_name;
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106
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107 /* If the user didn't explicitly specifify a display to use when
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108 they called make-x-device, then we first check to see if a
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109 display was specified on the command line with -display. If
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110 so, we set disp_name to it. Otherwise we use XDisplayName to
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111 see what DISPLAY is set to. XtOpenDisplay knows how to do
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112 both of these things, but we need to know the name to use. */
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113 if (display_arg)
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114 {
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115 int elt;
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116 int argc;
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117 char **argv;
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118 Lisp_Object conn;
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119
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120 make_argc_argv (Vx_initial_argv_list, &argc, &argv);
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121
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122 disp_name = NULL;
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123 for (elt = 0; elt < argc; elt++)
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124 {
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125 if (!strcmp (argv[elt], "-d") || !strcmp (argv[elt], "-display"))
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126 {
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127 if (elt + 1 == argc)
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128 {
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272
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129 suppress_early_error_handler_backtrace = 1;
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0
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130 error ("-display specified with no arg");
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131 }
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132 else
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133 {
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134 disp_name = argv[elt + 1];
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135 break;
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136 }
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137 }
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138 }
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139
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140 /* assert: display_arg is only set if we found the display
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141 arg earlier so we can't fail to find it now. */
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142 assert (disp_name != NULL);
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143 conn = build_ext_string (disp_name, FORMAT_CTEXT);
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144 free_argc_argv (argv);
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145 return conn;
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146 }
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147 else
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148 return build_ext_string (XDisplayName (0), FORMAT_CTEXT);
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149 }
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150
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151 /* "semi-canonicalize" means convert to a nicer form for printing, but
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152 don't completely canonicalize (into some likely ugly form) */
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153
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154 static Lisp_Object
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155 x_semi_canonicalize_console_connection (Lisp_Object connection,
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156 Error_behavior errb)
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157 {
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158 struct gcpro gcpro1;
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159
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160 GCPRO1 (connection);
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161
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162 if (NILP (connection))
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163 connection = get_display_arg_connection ();
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164 else
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165 {
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166 if (!ERRB_EQ (errb, ERROR_ME))
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167 {
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168 if (!STRINGP (connection))
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169 RETURN_UNGCPRO (Qunbound);
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170 }
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171 else
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172 CHECK_STRING (connection);
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173 }
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174
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175
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176 /* Be lenient, allow people to specify a device connection instead of
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177 a console connection -- e.g. "foo:0.0" instead of "foo:0". This
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178 only happens in `find-console' and `get-console'. */
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179 connection = x_device_to_console_connection (connection, errb);
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180
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181 /* Check for a couple of standard special cases */
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182 if (string_byte (XSTRING (connection), 0) == ':')
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183 connection = concat2 (build_string ("localhost"), connection);
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16
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184 else if (!strncmp ((CONST char *) XSTRING_DATA (connection),
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185 "unix:", 5))
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186 connection = concat2 (build_string ("localhost:"),
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187 Fsubstring (connection, make_int (5), Qnil));
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188
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189 RETURN_UNGCPRO (connection);
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190 }
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191
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192 static Lisp_Object
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193 x_canonicalize_console_connection (Lisp_Object connection, Error_behavior errb)
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194 {
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195 Lisp_Object hostname = Qnil;
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196 struct gcpro gcpro1, gcpro2;
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197
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198 GCPRO2 (connection, hostname);
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199
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200 connection = x_semi_canonicalize_console_connection (connection, errb);
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201 if (UNBOUNDP (connection))
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202 RETURN_UNGCPRO (Qunbound);
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203
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204 {
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205 int hostname_length, display_length, screen_length;
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206
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207 split_up_display_spec (connection, &hostname_length, &display_length,
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208 &screen_length);
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209 hostname = Fsubstring (connection, Qzero, make_int (hostname_length));
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210 hostname = canonicalize_host_name (hostname);
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211 connection = concat2 (hostname,
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212 make_string (XSTRING_DATA (connection)
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213 + hostname_length, display_length));
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214 }
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215
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216 RETURN_UNGCPRO (connection);
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217 }
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218
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219 static Lisp_Object
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220 x_semi_canonicalize_device_connection (Lisp_Object connection,
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221 Error_behavior errb)
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222 {
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223 int hostname_length, display_length, screen_length;
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224 struct gcpro gcpro1;
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225
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226 GCPRO1 (connection);
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227 if (NILP (connection))
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228 connection = get_display_arg_connection ();
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229 else
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230 {
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231 if (!ERRB_EQ (errb, ERROR_ME))
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232 {
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233 if (!STRINGP (connection))
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234 RETURN_UNGCPRO (Qunbound);
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235 }
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236 else
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237 CHECK_STRING (connection);
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238 }
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239
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240 split_up_display_spec (connection, &hostname_length, &display_length,
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241 &screen_length);
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242
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243 if (!screen_length)
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244 connection = concat2 (connection, build_string (".0"));
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245 RETURN_UNGCPRO (connection);
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246 }
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247
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248 static Lisp_Object
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249 x_canonicalize_device_connection (Lisp_Object connection, Error_behavior errb)
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250 {
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251 int hostname_length, display_length, screen_length;
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252 Lisp_Object screen_str = Qnil;
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253 struct gcpro gcpro1, gcpro2;
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254
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255 GCPRO2 (screen_str, connection);
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256 connection = x_semi_canonicalize_device_connection (connection, errb);
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257 if (UNBOUNDP (connection))
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258 RETURN_UNGCPRO (Qunbound);
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259
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260 split_up_display_spec (connection, &hostname_length, &display_length,
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261 &screen_length);
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262
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263 screen_str = build_string ((CONST char *) XSTRING_DATA (connection)
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264 + hostname_length + display_length);
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265 connection = x_canonicalize_console_connection (connection, errb);
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266
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267 RETURN_UNGCPRO (concat2 (connection, screen_str));
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268 }
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269
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270 void
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271 console_type_create_x (void)
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272 {
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273 INITIALIZE_CONSOLE_TYPE (x, "x", "console-x-p");
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185
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274
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275 CONSOLE_HAS_METHOD (x, semi_canonicalize_console_connection);
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276 CONSOLE_HAS_METHOD (x, canonicalize_console_connection);
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277 CONSOLE_HAS_METHOD (x, semi_canonicalize_device_connection);
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278 CONSOLE_HAS_METHOD (x, canonicalize_device_connection);
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279 CONSOLE_HAS_METHOD (x, device_to_console_connection);
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280 CONSOLE_HAS_METHOD (x, initially_selected_for_input);
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281 }
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282
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