1 /**************************************************************************** 2 * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc. * 3 * * 4 * Permission is hereby granted, free of charge, to any person obtaining a * 5 * copy of this software and associated documentation files (the * 6 * "Software"), to deal in the Software without restriction, including * 7 * without limitation the rights to use, copy, modify, merge, publish, * 8 * distribute, distribute with modifications, sublicense, and/or sell * 9 * copies of the Software, and to permit persons to whom the Software is * 10 * furnished to do so, subject to the following conditions: * 11 * * 12 * The above copyright notice and this permission notice shall be included * 13 * in all copies or substantial portions of the Software. * 14 * * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 22 * * 23 * Except as contained in this notice, the name(s) of the above copyright * 24 * holders shall not be used in advertising or otherwise to promote the * 25 * sale, use or other dealings in this Software without prior written * 26 * authorization. * 27 ****************************************************************************/ 28 29 /* 30 * def_prog_mode() 31 * def_shell_mode() 32 * reset_prog_mode() 33 * reset_shell_mode() 34 * savetty() 35 * resetty() 36 */ 37 38 #include <curses.priv.h> 39 #include <term.h> /* cur_term */ 40 41 MODULE_ID("$Id: lib_ttyflags.c,v 1.18 2008/08/03 22:10:44 tom Exp $") 42 43 NCURSES_EXPORT(int) 44 _nc_get_tty_mode(TTY * buf) 45 { 46 int result = OK; 47 48 if (buf == 0) { 49 result = ERR; 50 } else { 51 if (cur_term == 0) { 52 result = ERR; 53 } else { 54 for (;;) { 55 if (GET_TTY(cur_term->Filedes, buf) != 0) { 56 if (errno == EINTR) 57 continue; 58 result = ERR; 59 } 60 break; 61 } 62 } 63 64 if (result == ERR) 65 memset(buf, 0, sizeof(*buf)); 66 67 TR(TRACE_BITS, ("_nc_get_tty_mode(%d): %s", 68 cur_term ? cur_term->Filedes : -1, 69 _nc_trace_ttymode(buf))); 70 } 71 return (result); 72 } 73 74 NCURSES_EXPORT(int) 75 _nc_set_tty_mode(TTY * buf) 76 { 77 int result = OK; 78 79 if (buf == 0) { 80 result = ERR; 81 } else { 82 if (cur_term == 0) { 83 result = ERR; 84 } else { 85 for (;;) { 86 if (SET_TTY(cur_term->Filedes, buf) != 0) { 87 if (errno == EINTR) 88 continue; 89 if ((errno == ENOTTY) && (SP != 0)) 90 SP->_notty = TRUE; 91 result = ERR; 92 } 93 break; 94 } 95 } 96 TR(TRACE_BITS, ("_nc_set_tty_mode(%d): %s", 97 cur_term ? cur_term->Filedes : -1, 98 _nc_trace_ttymode(buf))); 99 } 100 return (result); 101 } 102 103 NCURSES_EXPORT(int) 104 def_shell_mode(void) 105 { 106 int rc = ERR; 107 108 T((T_CALLED("def_shell_mode()"))); 109 110 if (cur_term != 0) { 111 /* 112 * If XTABS was on, remove the tab and backtab capabilities. 113 */ 114 if (_nc_get_tty_mode(&cur_term->Ottyb) == OK) { 115 #ifdef TERMIOS 116 if (cur_term->Ottyb.c_oflag & OFLAGS_TABS) 117 tab = back_tab = NULL; 118 #else 119 if (cur_term->Ottyb.sg_flags & XTABS) 120 tab = back_tab = NULL; 121 #endif 122 rc = OK; 123 } 124 } 125 returnCode(rc); 126 } 127 128 NCURSES_EXPORT(int) 129 def_prog_mode(void) 130 { 131 int rc = ERR; 132 133 T((T_CALLED("def_prog_mode()"))); 134 135 if (cur_term != 0) { 136 /* 137 * Turn off the XTABS bit in the tty structure if it was on. 138 */ 139 if (_nc_get_tty_mode(&cur_term->Nttyb) == OK) { 140 #ifdef TERMIOS 141 cur_term->Nttyb.c_oflag &= ~OFLAGS_TABS; 142 #else 143 cur_term->Nttyb.sg_flags &= ~XTABS; 144 #endif 145 rc = OK; 146 } 147 } 148 returnCode(rc); 149 } 150 151 NCURSES_EXPORT(int) 152 reset_prog_mode(void) 153 { 154 T((T_CALLED("reset_prog_mode()"))); 155 156 if (cur_term != 0) { 157 if (_nc_set_tty_mode(&cur_term->Nttyb) == OK) { 158 if (SP) { 159 if (SP->_keypad_on) 160 _nc_keypad(SP, TRUE); 161 NC_BUFFERED(TRUE); 162 } 163 returnCode(OK); 164 } 165 } 166 returnCode(ERR); 167 } 168 169 NCURSES_EXPORT(int) 170 reset_shell_mode(void) 171 { 172 T((T_CALLED("reset_shell_mode()"))); 173 174 if (cur_term != 0) { 175 if (SP) { 176 _nc_keypad(SP, FALSE); 177 _nc_flush(); 178 NC_BUFFERED(FALSE); 179 } 180 returnCode(_nc_set_tty_mode(&cur_term->Ottyb)); 181 } 182 returnCode(ERR); 183 } 184 185 static TTY * 186 saved_tty(void) 187 { 188 TTY *result = 0; 189 190 if (SP != 0) { 191 result = &(SP->_saved_tty); 192 } else { 193 if (_nc_prescreen.saved_tty == 0) { 194 _nc_prescreen.saved_tty = typeCalloc(TTY, 1); 195 } 196 result = _nc_prescreen.saved_tty; 197 } 198 return result; 199 } 200 201 /* 202 ** savetty() and resetty() 203 ** 204 */ 205 206 NCURSES_EXPORT(int) 207 savetty(void) 208 { 209 T((T_CALLED("savetty()"))); 210 211 returnCode(_nc_get_tty_mode(saved_tty())); 212 } 213 214 NCURSES_EXPORT(int) 215 resetty(void) 216 { 217 T((T_CALLED("resetty()"))); 218 219 returnCode(_nc_set_tty_mode(saved_tty())); 220 } 221