1 /* $OpenBSD: lib_ttyflags.c,v 1.5 2010/01/12 23:22:06 nicm Exp $ */ 2 3 /**************************************************************************** 4 * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc. * 5 * * 6 * Permission is hereby granted, free of charge, to any person obtaining a * 7 * copy of this software and associated documentation files (the * 8 * "Software"), to deal in the Software without restriction, including * 9 * without limitation the rights to use, copy, modify, merge, publish, * 10 * distribute, distribute with modifications, sublicense, and/or sell * 11 * copies of the Software, and to permit persons to whom the Software is * 12 * furnished to do so, subject to the following conditions: * 13 * * 14 * The above copyright notice and this permission notice shall be included * 15 * in all copies or substantial portions of the Software. * 16 * * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 20 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 23 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 24 * * 25 * Except as contained in this notice, the name(s) of the above copyright * 26 * holders shall not be used in advertising or otherwise to promote the * 27 * sale, use or other dealings in this Software without prior written * 28 * authorization. * 29 ****************************************************************************/ 30 31 /* 32 * def_prog_mode() 33 * def_shell_mode() 34 * reset_prog_mode() 35 * reset_shell_mode() 36 * savetty() 37 * resetty() 38 */ 39 40 #include <curses.priv.h> 41 #include <term.h> /* cur_term */ 42 43 MODULE_ID("$Id: lib_ttyflags.c,v 1.5 2010/01/12 23:22:06 nicm Exp $") 44 45 NCURSES_EXPORT(int) 46 _nc_get_tty_mode(TTY * buf) 47 { 48 int result = OK; 49 50 if (buf == 0) { 51 result = ERR; 52 } else { 53 if (cur_term == 0) { 54 result = ERR; 55 } else { 56 for (;;) { 57 if (GET_TTY(cur_term->Filedes, buf) != 0) { 58 if (errno == EINTR) 59 continue; 60 result = ERR; 61 } 62 break; 63 } 64 } 65 66 if (result == ERR) 67 memset(buf, 0, sizeof(*buf)); 68 69 TR(TRACE_BITS, ("_nc_get_tty_mode(%d): %s", 70 cur_term ? cur_term->Filedes : -1, 71 _nc_trace_ttymode(buf))); 72 } 73 return (result); 74 } 75 76 NCURSES_EXPORT(int) 77 _nc_set_tty_mode(TTY * buf) 78 { 79 int result = OK; 80 81 if (buf == 0) { 82 result = ERR; 83 } else { 84 if (cur_term == 0) { 85 result = ERR; 86 } else { 87 for (;;) { 88 if (SET_TTY(cur_term->Filedes, buf) != 0) { 89 if (errno == EINTR) 90 continue; 91 if ((errno == ENOTTY) && (SP != 0)) 92 SP->_notty = TRUE; 93 result = ERR; 94 } 95 break; 96 } 97 } 98 TR(TRACE_BITS, ("_nc_set_tty_mode(%d): %s", 99 cur_term ? cur_term->Filedes : -1, 100 _nc_trace_ttymode(buf))); 101 } 102 return (result); 103 } 104 105 NCURSES_EXPORT(int) 106 def_shell_mode(void) 107 { 108 int rc = ERR; 109 110 T((T_CALLED("def_shell_mode()"))); 111 112 if (cur_term != 0) { 113 /* 114 * If XTABS was on, remove the tab and backtab capabilities. 115 */ 116 if (_nc_get_tty_mode(&cur_term->Ottyb) == OK) { 117 #ifdef TERMIOS 118 if (cur_term->Ottyb.c_oflag & OFLAGS_TABS) 119 tab = back_tab = NULL; 120 #else 121 if (cur_term->Ottyb.sg_flags & XTABS) 122 tab = back_tab = NULL; 123 #endif 124 rc = OK; 125 } 126 } 127 returnCode(rc); 128 } 129 130 NCURSES_EXPORT(int) 131 def_prog_mode(void) 132 { 133 int rc = ERR; 134 135 T((T_CALLED("def_prog_mode()"))); 136 137 if (cur_term != 0) { 138 /* 139 * Turn off the XTABS bit in the tty structure if it was on. 140 */ 141 if (_nc_get_tty_mode(&cur_term->Nttyb) == OK) { 142 #ifdef TERMIOS 143 cur_term->Nttyb.c_oflag &= ~OFLAGS_TABS; 144 #else 145 cur_term->Nttyb.sg_flags &= ~XTABS; 146 #endif 147 rc = OK; 148 } 149 } 150 returnCode(rc); 151 } 152 153 NCURSES_EXPORT(int) 154 reset_prog_mode(void) 155 { 156 T((T_CALLED("reset_prog_mode()"))); 157 158 if (cur_term != 0) { 159 if (_nc_set_tty_mode(&cur_term->Nttyb) == OK) { 160 if (SP) { 161 if (SP->_keypad_on) 162 _nc_keypad(SP, TRUE); 163 NC_BUFFERED(TRUE); 164 } 165 returnCode(OK); 166 } 167 } 168 returnCode(ERR); 169 } 170 171 NCURSES_EXPORT(int) 172 reset_shell_mode(void) 173 { 174 T((T_CALLED("reset_shell_mode()"))); 175 176 if (cur_term != 0) { 177 if (SP) { 178 _nc_keypad(SP, FALSE); 179 _nc_flush(); 180 NC_BUFFERED(FALSE); 181 } 182 returnCode(_nc_set_tty_mode(&cur_term->Ottyb)); 183 } 184 returnCode(ERR); 185 } 186 187 static TTY * 188 saved_tty(void) 189 { 190 TTY *result = 0; 191 192 if (SP != 0) { 193 result = &(SP->_saved_tty); 194 } else { 195 if (_nc_prescreen.saved_tty == 0) { 196 _nc_prescreen.saved_tty = typeCalloc(TTY, 1); 197 } 198 result = _nc_prescreen.saved_tty; 199 } 200 return result; 201 } 202 203 /* 204 ** savetty() and resetty() 205 ** 206 */ 207 208 NCURSES_EXPORT(int) 209 savetty(void) 210 { 211 T((T_CALLED("savetty()"))); 212 213 returnCode(_nc_get_tty_mode(saved_tty())); 214 } 215 216 NCURSES_EXPORT(int) 217 resetty(void) 218 { 219 T((T_CALLED("resetty()"))); 220 221 returnCode(_nc_set_tty_mode(saved_tty())); 222 } 223