ncurses/tinfo/lib_ttyflags.c

   1 /****************************************************************************
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  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               *
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  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 1.14 2006/12/30 21:37:20 tom Exp $")
  42
  43 NCURSES_EXPORT(int)
  44 _nc_get_tty_mode(TTY * buf)
  45 {
  46     int result = OK;
  47
  48     if (cur_term == 0) {
  49         result = ERR;
  50     } else {
  51         for (;;) {
  52             if (GET_TTY(cur_term->Filedes, buf) != 0) {
  53                 if (errno == EINTR)
  54                     continue;
  55                 result = ERR;
  56             }
  57             break;
  58         }
  59     }
  60
  61     if (result == ERR)
  62         memset(buf, 0, sizeof(*buf));
  63
  64     TR(TRACE_BITS, ("_nc_get_tty_mode(%d): %s",
  65                     cur_term->Filedes, _nc_trace_ttymode(buf)));
  66     return (result);
  67 }
  68
  69 NCURSES_EXPORT(int)
  70 _nc_set_tty_mode(TTY * buf)
  71 {
  72     int result = OK;
  73
  74     if (cur_term == 0) {
  75         result = ERR;
  76     } else {
  77         for (;;) {
  78             if (SET_TTY(cur_term->Filedes, buf) != 0) {
  79                 if (errno == EINTR)
  80                     continue;
  81                 if ((errno == ENOTTY) && (SP != 0))
  82                     SP->_notty = TRUE;
  83                 result = ERR;
  84             }
  85             break;
  86         }
  87     }
  88     TR(TRACE_BITS, ("_nc_set_tty_mode(%d): %s",
  89                     cur_term->Filedes, _nc_trace_ttymode(buf)));
  90     return (result);
  91 }
  92
  93 NCURSES_EXPORT(int)
  94 def_shell_mode(void)
  95 {
  96     T((T_CALLED("def_shell_mode()")));
  97
  98     /*
  99      * If XTABS was on, remove the tab and backtab capabilities.
 100      */
 101
 102     if (_nc_get_tty_mode(&cur_term->Ottyb) != OK)
 103         returnCode(ERR);
 104 #ifdef TERMIOS
 105     if (cur_term->Ottyb.c_oflag & OFLAGS_TABS)
 106         tab = back_tab = NULL;
 107 #else
 108     if (cur_term->Ottyb.sg_flags & XTABS)
 109         tab = back_tab = NULL;
 110 #endif
 111     returnCode(OK);
 112 }
 113
 114 NCURSES_EXPORT(int)
 115 def_prog_mode(void)
 116 {
 117     T((T_CALLED("def_prog_mode()")));
 118
 119     /*
 120      * Turn off the XTABS bit in the tty structure if it was on.
 121      */
 122
 123     if (_nc_get_tty_mode(&cur_term->Nttyb) != OK)
 124         returnCode(ERR);
 125 #ifdef TERMIOS
 126     cur_term->Nttyb.c_oflag &= ~OFLAGS_TABS;
 127 #else
 128     cur_term->Nttyb.sg_flags &= ~XTABS;
 129 #endif
 130     returnCode(OK);
 131 }
 132
 133 NCURSES_EXPORT(int)
 134 reset_prog_mode(void)
 135 {
 136     T((T_CALLED("reset_prog_mode()")));
 137
 138     if (cur_term != 0) {
 139         if (_nc_set_tty_mode(&cur_term->Nttyb) == OK) {
 140             if (SP) {
 141                 if (SP->_keypad_on)
 142                     _nc_keypad(TRUE);
 143                 NC_BUFFERED(TRUE);
 144             }
 145             returnCode(OK);
 146         }
 147     }
 148     returnCode(ERR);
 149 }
 150
 151 NCURSES_EXPORT(int)
 152 reset_shell_mode(void)
 153 {
 154     T((T_CALLED("reset_shell_mode()")));
 155
 156     if (cur_term != 0) {
 157         if (SP) {
 158             _nc_keypad(FALSE);
 159             _nc_flush();
 160             NC_BUFFERED(FALSE);
 161         }
 162         returnCode(_nc_set_tty_mode(&cur_term->Ottyb));
 163     }
 164     returnCode(ERR);
 165 }
 166
 167 /*
 168 **      savetty()  and  resetty()
 169 **
 170 */
 171
 172 NCURSES_EXPORT(int)
 173 savetty(void)
 174 {
 175     T((T_CALLED("savetty()")));
 176
 177     returnCode(_nc_get_tty_mode(&(SP->_saved_tty)));
 178 }
 179
 180 NCURSES_EXPORT(int)
 181 resetty(void)
 182 {
 183     T((T_CALLED("resetty()")));
 184
 185     returnCode(_nc_set_tty_mode(&(SP->_saved_tty)));
 186 }