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428
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1 /* TTY console functions.
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2 Copyright (C) 1994, 1995 Board of Trustees, University of Illinois.
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3 Copyright (C) 1994, 1995 Free Software Foundation, Inc.
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4 Copyright (C) 1996 Ben Wing.
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5
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6 This file is part of XEmacs.
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7
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8 XEmacs is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
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10 Free Software Foundation; either version 2, or (at your option) any
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11 later version.
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12
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13 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with XEmacs; see the file COPYING. If not, write to
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20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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21 Boston, MA 02111-1307, USA. */
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22
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23 /* Synched up with: Not in FSF. */
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24
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25 /* Authors: Ben Wing and Chuck Thompson. */
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26
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27 #include <config.h>
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28 #include "lisp.h"
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29
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30 #include "console-tty.h"
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31 #include "console-stream.h"
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32 #include "faces.h"
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33 #include "frame.h"
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34 #include "lstream.h"
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35 #include "glyphs.h"
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36 #include "sysdep.h"
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37 #include "sysfile.h"
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38 #ifdef FILE_CODING
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39 #include "file-coding.h"
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40 #endif
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41
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42 DEFINE_CONSOLE_TYPE (tty);
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43 DECLARE_IMAGE_INSTANTIATOR_FORMAT (nothing);
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44 DECLARE_IMAGE_INSTANTIATOR_FORMAT (string);
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45 DECLARE_IMAGE_INSTANTIATOR_FORMAT (formatted_string);
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46 DECLARE_IMAGE_INSTANTIATOR_FORMAT (inherit);
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47
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48 Lisp_Object Qterminal_type;
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49 Lisp_Object Qcontrolling_process;
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50
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51
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52 static void
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53 allocate_tty_console_struct (struct console *con)
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54 {
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55 /* zero out all slots except the lisp ones ... */
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56 CONSOLE_TTY_DATA (con) = xnew_and_zero (struct tty_console);
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57 CONSOLE_TTY_DATA (con)->terminal_type = Qnil;
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58 CONSOLE_TTY_DATA (con)->instream = Qnil;
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59 CONSOLE_TTY_DATA (con)->outstream = Qnil;
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60 }
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61
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62 static void
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63 tty_init_console (struct console *con, Lisp_Object props)
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64 {
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65 Lisp_Object tty = CONSOLE_CONNECTION (con);
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66 Lisp_Object terminal_type = Qnil;
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67 Lisp_Object controlling_process = Qnil;
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68 struct tty_console *tty_con;
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69 struct gcpro gcpro1, gcpro2;
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70
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71 GCPRO2 (terminal_type, controlling_process);
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72
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73 terminal_type = Fplist_get (props, Qterminal_type, Qnil);
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74 controlling_process = Fplist_get (props, Qcontrolling_process, Qnil);
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75
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76 /* Determine the terminal type */
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77
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78 if (!NILP (terminal_type))
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79 CHECK_STRING (terminal_type);
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80 else
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81 {
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82 char *temp_type = getenv ("TERM");
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83
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84 if (!temp_type)
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85 {
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86 error ("Cannot determine terminal type");
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87 }
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88 else
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89 terminal_type = build_string (temp_type);
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90 }
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91
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92 /* Determine the controlling process */
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93 if (!NILP (controlling_process))
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94 CHECK_INT (controlling_process);
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95
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96 /* Open the specified console */
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97
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98 allocate_tty_console_struct (con);
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99 tty_con = CONSOLE_TTY_DATA (con);
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100
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101 if (internal_equal (tty, Vstdio_str, 0))
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102 {
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103 tty_con->infd = fileno (stdin);
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104 tty_con->outfd = fileno (stdout);
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105 tty_con->is_stdio = 1;
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106 }
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107 else
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108 {
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109 tty_con->infd = tty_con->outfd =
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110 open ((char *) XSTRING_DATA (tty), O_RDWR);
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111 if (tty_con->infd < 0)
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112 error ("Unable to open tty %s", XSTRING_DATA (tty));
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113 tty_con->is_stdio = 0;
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114 }
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115
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116 tty_con->instream = make_filedesc_input_stream (tty_con->infd, 0, -1, 0);
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117 tty_con->outstream = make_filedesc_output_stream (tty_con->outfd, 0, -1, 0);
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442
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118 #ifdef FILE_CODING
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428
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119 tty_con->instream =
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120 make_decoding_input_stream (XLSTREAM (tty_con->instream),
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442
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121 Fget_coding_system (Qkeyboard));
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428
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122 Lstream_set_character_mode (XLSTREAM (tty_con->instream));
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123 tty_con->outstream =
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124 make_encoding_output_stream (XLSTREAM (tty_con->outstream),
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442
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125 Fget_coding_system (Qterminal));
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126 #endif /* FILE_CODING */
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428
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127 tty_con->terminal_type = terminal_type;
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128 tty_con->controlling_process = controlling_process;
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129
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130 if (NILP (CONSOLE_NAME (con)))
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131 CONSOLE_NAME (con) = Ffile_name_nondirectory (tty);
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132 {
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442
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133 pid_t tty_pg;
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134 pid_t controlling_tty_pg;
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428
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135 int cfd;
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136
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137 /* OK, the only sure-fire way I can think of to determine
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138 whether a particular TTY is our controlling TTY is to check
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139 if it has the same foreground process group as our controlling
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140 TTY. This is OK because a process group can never simultaneously
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141 be the foreground process group of two TTY's (in that case it
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142 would have two controlling TTY's, which is not allowed). */
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143
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144 EMACS_GET_TTY_PROCESS_GROUP (tty_con->infd, &tty_pg);
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145 cfd = open ("/dev/tty", O_RDWR, 0);
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146 EMACS_GET_TTY_PROCESS_GROUP (cfd, &controlling_tty_pg);
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147 close (cfd);
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148 if (tty_pg == controlling_tty_pg)
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149 {
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150 tty_con->controlling_terminal = 1;
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151 XSETCONSOLE (Vcontrolling_terminal, con);
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152 munge_tty_process_group ();
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153 }
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154 else
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155 tty_con->controlling_terminal = 0;
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156 }
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157
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158 UNGCPRO;
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159 }
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160
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161 static void
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162 tty_mark_console (struct console *con)
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163 {
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164 struct tty_console *tty_con = CONSOLE_TTY_DATA (con);
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165 mark_object (tty_con->terminal_type);
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166 mark_object (tty_con->instream);
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167 mark_object (tty_con->outstream);
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168 }
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169
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170 static int
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171 tty_initially_selected_for_input (struct console *con)
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172 {
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173 return 1;
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174 }
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175
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176 static void
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177 free_tty_console_struct (struct console *con)
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178 {
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179 struct tty_console *tty_con = CONSOLE_TTY_DATA (con);
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180 if (tty_con)
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181 {
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182 if (tty_con->term_entry_buffer) /* allocated in term_init () */
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183 {
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184 xfree (tty_con->term_entry_buffer);
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185 tty_con->term_entry_buffer = NULL;
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186 }
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187 xfree (tty_con);
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188 CONSOLE_TTY_DATA (con) = NULL;
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189 }
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190 }
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191
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192 static void
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193 tty_delete_console (struct console *con)
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194 {
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195 Lstream_close (XLSTREAM (CONSOLE_TTY_DATA (con)->instream));
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196 Lstream_close (XLSTREAM (CONSOLE_TTY_DATA (con)->outstream));
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197 if (!CONSOLE_TTY_DATA (con)->is_stdio)
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198 close (CONSOLE_TTY_DATA (con)->infd);
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199 if (CONSOLE_TTY_DATA (con)->controlling_terminal)
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200 {
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201 Vcontrolling_terminal = Qnil;
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202 unmunge_tty_process_group ();
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203 }
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204 free_tty_console_struct (con);
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205 }
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206
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207
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208 static struct console *
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209 decode_tty_console (Lisp_Object console)
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210 {
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211 XSETCONSOLE (console, decode_console (console));
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212 CHECK_TTY_CONSOLE (console);
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213 return XCONSOLE (console);
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214 }
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215
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216 DEFUN ("console-tty-terminal-type", Fconsole_tty_terminal_type,
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217 0, 1, 0, /*
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218 Return the terminal type of TTY console CONSOLE.
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219 */
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220 (console))
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221 {
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222 return CONSOLE_TTY_DATA (decode_tty_console (console))->terminal_type;
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223 }
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224
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225 DEFUN ("console-tty-controlling-process", Fconsole_tty_controlling_process,
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226 0, 1, 0, /*
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227 Return the controlling process of tty console CONSOLE.
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228 */
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229 (console))
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230 {
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231 return CONSOLE_TTY_DATA (decode_tty_console (console))->controlling_process;
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232 }
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233
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234 #ifdef FILE_CODING
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235
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236 DEFUN ("console-tty-input-coding-system", Fconsole_tty_input_coding_system,
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237 0, 1, 0, /*
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238 Return the input coding system of tty console CONSOLE.
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239 */
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240 (console))
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241 {
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242 return decoding_stream_coding_system
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243 (XLSTREAM (CONSOLE_TTY_DATA (decode_tty_console (console))->instream));
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244 }
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245
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246 DEFUN ("set-console-tty-input-coding-system", Fset_console_tty_input_coding_system,
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247 0, 2, 0, /*
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248 Set the input coding system of tty console CONSOLE to CODESYS.
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249 CONSOLE defaults to the selected console.
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250 CODESYS defaults to the value of `keyboard-coding-system'.
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251 */
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252 (console, codesys))
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253 {
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254 set_decoding_stream_coding_system
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255 (XLSTREAM (CONSOLE_TTY_DATA (decode_tty_console (console))->instream),
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442
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256 Fget_coding_system (NILP (codesys) ? Qkeyboard : codesys));
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428
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257 return Qnil;
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258 }
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259
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260 DEFUN ("console-tty-output-coding-system", Fconsole_tty_output_coding_system,
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261 0, 1, 0, /*
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262 Return TTY CONSOLE's output coding system.
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263 */
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264 (console))
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265 {
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266 return encoding_stream_coding_system
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267 (XLSTREAM (CONSOLE_TTY_DATA (decode_tty_console (console))->outstream));
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268 }
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269
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270 DEFUN ("set-console-tty-output-coding-system", Fset_console_tty_output_coding_system,
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271 0, 2, 0, /*
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272 Set the coding system of tty output of console CONSOLE to CODESYS.
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273 CONSOLE defaults to the selected console.
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274 CODESYS defaults to the value of `terminal-coding-system'.
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275 */
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276 (console, codesys))
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277 {
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278 set_encoding_stream_coding_system
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279 (XLSTREAM (CONSOLE_TTY_DATA (decode_tty_console (console))->outstream),
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442
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280 Fget_coding_system (NILP (codesys) ? Qterminal : codesys));
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438
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281 /* Redraw tty */
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282 face_property_was_changed (Vdefault_face, Qfont, Qtty);
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428
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283 return Qnil;
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284 }
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285
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440
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286 /* #### Move this function to lisp */
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428
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287 DEFUN ("set-console-tty-coding-system", Fset_console_tty_coding_system,
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288 0, 2, 0, /*
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289 Set the input and output coding systems of tty console CONSOLE to CODESYS.
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290 CONSOLE defaults to the selected console.
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291 If CODESYS is nil, the values of `keyboard-coding-system' and
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292 `terminal-coding-system' will be used for the input and
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293 output coding systems of CONSOLE.
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294 */
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295 (console, codesys))
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296 {
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297 Fset_console_tty_input_coding_system (console, codesys);
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298 Fset_console_tty_output_coding_system (console, codesys);
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299 return Qnil;
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300 }
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301 #endif /* FILE_CODING */
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302
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303
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304 Lisp_Object
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305 tty_semi_canonicalize_console_connection (Lisp_Object connection,
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306 Error_behavior errb)
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307 {
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308 return stream_semi_canonicalize_console_connection (connection, errb);
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309 }
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310
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311 Lisp_Object
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312 tty_canonicalize_console_connection (Lisp_Object connection,
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313 Error_behavior errb)
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314 {
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315 return stream_canonicalize_console_connection (connection, errb);
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316 }
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317
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318 Lisp_Object
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319 tty_semi_canonicalize_device_connection (Lisp_Object connection,
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320 Error_behavior errb)
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321 {
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322 return stream_semi_canonicalize_console_connection (connection, errb);
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323 }
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324
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325 Lisp_Object
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326 tty_canonicalize_device_connection (Lisp_Object connection,
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327 Error_behavior errb)
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328 {
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329 return stream_canonicalize_console_connection (connection, errb);
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330 }
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331
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332
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333 /************************************************************************/
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334 /* initialization */
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335 /************************************************************************/
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336
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337 void
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338 syms_of_console_tty (void)
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339 {
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340 DEFSUBR (Fconsole_tty_terminal_type);
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341 DEFSUBR (Fconsole_tty_controlling_process);
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342 defsymbol (&Qterminal_type, "terminal-type");
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343 defsymbol (&Qcontrolling_process, "controlling-process");
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344 #ifdef FILE_CODING
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345 DEFSUBR (Fconsole_tty_output_coding_system);
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346 DEFSUBR (Fset_console_tty_output_coding_system);
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347 DEFSUBR (Fconsole_tty_input_coding_system);
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348 DEFSUBR (Fset_console_tty_input_coding_system);
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349 DEFSUBR (Fset_console_tty_coding_system);
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350 #endif /* FILE_CODING */
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351 }
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352
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353 void
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354 console_type_create_tty (void)
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355 {
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356 INITIALIZE_CONSOLE_TYPE (tty, "tty", "console-tty-p");
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357
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358 /* console methods */
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359 CONSOLE_HAS_METHOD (tty, init_console);
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360 CONSOLE_HAS_METHOD (tty, mark_console);
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361 CONSOLE_HAS_METHOD (tty, initially_selected_for_input);
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362 CONSOLE_HAS_METHOD (tty, delete_console);
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363 CONSOLE_HAS_METHOD (tty, canonicalize_console_connection);
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364 CONSOLE_HAS_METHOD (tty, canonicalize_device_connection);
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365 CONSOLE_HAS_METHOD (tty, semi_canonicalize_console_connection);
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366 CONSOLE_HAS_METHOD (tty, semi_canonicalize_device_connection);
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367 }
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368
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369 void
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370 reinit_console_type_create_tty (void)
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371 {
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372 REINITIALIZE_CONSOLE_TYPE (tty);
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373 }
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374
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375 void
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376 image_instantiator_format_create_glyphs_tty (void)
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377 {
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378 IIFORMAT_VALID_CONSOLE (tty, nothing);
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379 IIFORMAT_VALID_CONSOLE (tty, string);
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380 IIFORMAT_VALID_CONSOLE (tty, formatted_string);
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381 IIFORMAT_VALID_CONSOLE (tty, inherit);
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382 }
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383
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384 void
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385 vars_of_console_tty (void)
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386 {
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387 Fprovide (Qtty);
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388 }
|
