[12991] | 1 | /* rltty.c -- functions to prepare and restore the terminal for readline's |
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| 2 | use. */ |
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| 3 | |
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| 4 | /* Copyright (C) 1992 Free Software Foundation, Inc. |
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| 5 | |
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| 6 | This file is part of the GNU Readline Library, a library for |
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| 7 | reading lines of text with interactive input and history editing. |
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| 8 | |
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| 9 | The GNU Readline Library is free software; you can redistribute it |
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| 10 | and/or modify it under the terms of the GNU General Public License |
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| 11 | as published by the Free Software Foundation; either version 1, or |
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| 12 | (at your option) any later version. |
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| 13 | |
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| 14 | The GNU Readline Library is distributed in the hope that it will be |
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| 15 | useful, but WITHOUT ANY WARRANTY; without even the implied warranty |
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| 16 | of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 17 | GNU General Public License for more details. |
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| 18 | |
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| 19 | The GNU General Public License is often shipped with GNU software, and |
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| 20 | is generally kept in a file called COPYING or LICENSE. If you do not |
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| 21 | have a copy of the license, write to the Free Software Foundation, |
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| 22 | 675 Mass Ave, Cambridge, MA 02139, USA. */ |
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| 23 | #define READLINE_LIBRARY |
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| 24 | |
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| 25 | #if defined (HAVE_CONFIG_H) |
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| 26 | # include <config.h> |
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| 27 | #endif |
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| 28 | |
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| 29 | #include <sys/types.h> |
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| 30 | #include <signal.h> |
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| 31 | #include <errno.h> |
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| 32 | #include <stdio.h> |
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| 33 | |
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| 34 | #if defined (HAVE_UNISTD_H) |
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| 35 | # include <unistd.h> |
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| 36 | #endif /* HAVE_UNISTD_H */ |
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| 37 | |
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| 38 | #include "rldefs.h" |
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| 39 | |
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| 40 | #if defined (GWINSZ_IN_SYS_IOCTL) |
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| 41 | # include <sys/ioctl.h> |
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| 42 | #endif /* GWINSZ_IN_SYS_IOCTL */ |
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| 43 | |
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| 44 | #include "rltty.h" |
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| 45 | #include "readline.h" |
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| 46 | |
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| 47 | #if !defined (errno) |
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| 48 | extern int errno; |
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| 49 | #endif /* !errno */ |
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| 50 | |
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| 51 | extern int readline_echoing_p; |
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| 52 | extern int _rl_eof_char; |
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| 53 | |
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| 54 | extern int _rl_enable_keypad, _rl_enable_meta; |
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| 55 | |
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| 56 | extern void _rl_control_keypad (); |
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| 57 | |
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| 58 | #if defined (__GO32__) |
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| 59 | # include <pc.h> |
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| 60 | # undef HANDLE_SIGNALS |
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| 61 | #endif /* __GO32__ */ |
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| 62 | |
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| 63 | /* Indirect functions to allow apps control over terminal management. */ |
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| 64 | extern void rl_prep_terminal (), rl_deprep_terminal (); |
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| 65 | |
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| 66 | VFunction *rl_prep_term_function = rl_prep_terminal; |
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| 67 | VFunction *rl_deprep_term_function = rl_deprep_terminal; |
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| 68 | |
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| 69 | /* **************************************************************** */ |
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| 70 | /* */ |
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| 71 | /* Signal Management */ |
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| 72 | /* */ |
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| 73 | /* **************************************************************** */ |
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| 74 | |
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| 75 | #if defined (HAVE_POSIX_SIGNALS) |
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| 76 | static sigset_t sigint_set, sigint_oset; |
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| 77 | #else /* !HAVE_POSIX_SIGNALS */ |
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| 78 | # if defined (HAVE_BSD_SIGNALS) |
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| 79 | static int sigint_oldmask; |
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| 80 | # endif /* HAVE_BSD_SIGNALS */ |
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| 81 | #endif /* !HAVE_POSIX_SIGNALS */ |
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| 82 | |
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| 83 | static int sigint_blocked; |
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| 84 | |
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| 85 | /* Cause SIGINT to not be delivered until the corresponding call to |
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| 86 | release_sigint(). */ |
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| 87 | static void |
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| 88 | block_sigint () |
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| 89 | { |
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| 90 | if (sigint_blocked) |
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| 91 | return; |
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| 92 | |
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| 93 | #if defined (HAVE_POSIX_SIGNALS) |
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| 94 | sigemptyset (&sigint_set); |
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| 95 | sigemptyset (&sigint_oset); |
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| 96 | sigaddset (&sigint_set, SIGINT); |
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| 97 | sigprocmask (SIG_BLOCK, &sigint_set, &sigint_oset); |
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| 98 | #else /* !HAVE_POSIX_SIGNALS */ |
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| 99 | # if defined (HAVE_BSD_SIGNALS) |
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| 100 | sigint_oldmask = sigblock (sigmask (SIGINT)); |
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| 101 | # else /* !HAVE_BSD_SIGNALS */ |
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| 102 | # if defined (HAVE_USG_SIGHOLD) |
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| 103 | sighold (SIGINT); |
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| 104 | # endif /* HAVE_USG_SIGHOLD */ |
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| 105 | # endif /* !HAVE_BSD_SIGNALS */ |
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| 106 | #endif /* !HAVE_POSIX_SIGNALS */ |
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| 107 | sigint_blocked = 1; |
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| 108 | } |
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| 109 | |
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| 110 | /* Allow SIGINT to be delivered. */ |
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| 111 | static void |
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| 112 | release_sigint () |
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| 113 | { |
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| 114 | if (!sigint_blocked) |
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| 115 | return; |
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| 116 | |
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| 117 | #if defined (HAVE_POSIX_SIGNALS) |
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| 118 | sigprocmask (SIG_SETMASK, &sigint_oset, (sigset_t *)NULL); |
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| 119 | #else |
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| 120 | # if defined (HAVE_BSD_SIGNALS) |
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| 121 | sigsetmask (sigint_oldmask); |
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| 122 | # else /* !HAVE_BSD_SIGNALS */ |
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| 123 | # if defined (HAVE_USG_SIGHOLD) |
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| 124 | sigrelse (SIGINT); |
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| 125 | # endif /* HAVE_USG_SIGHOLD */ |
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| 126 | # endif /* !HAVE_BSD_SIGNALS */ |
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| 127 | #endif /* !HAVE_POSIX_SIGNALS */ |
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| 128 | |
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| 129 | sigint_blocked = 0; |
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| 130 | } |
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| 131 | |
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| 132 | /* **************************************************************** */ |
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| 133 | /* */ |
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| 134 | /* Saving and Restoring the TTY */ |
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| 135 | /* */ |
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| 136 | /* **************************************************************** */ |
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| 137 | |
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| 138 | /* Non-zero means that the terminal is in a prepped state. */ |
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| 139 | static int terminal_prepped; |
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| 140 | |
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| 141 | /* If non-zero, means that this process has called tcflow(fd, TCOOFF) |
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| 142 | and output is suspended. */ |
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| 143 | #if defined (__ksr1__) |
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| 144 | static int ksrflow; |
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| 145 | #endif |
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| 146 | |
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| 147 | #if defined (TIOCGWINSZ) |
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| 148 | /* Dummy call to force a backgrounded readline to stop before it tries |
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| 149 | to get the tty settings. */ |
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| 150 | static void |
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| 151 | set_winsize (tty) |
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| 152 | int tty; |
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| 153 | { |
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| 154 | struct winsize w; |
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| 155 | |
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| 156 | if (ioctl (tty, TIOCGWINSZ, &w) == 0) |
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| 157 | (void) ioctl (tty, TIOCSWINSZ, &w); |
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| 158 | } |
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| 159 | #endif /* TIOCGWINSZ */ |
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| 160 | |
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| 161 | #if defined (NEW_TTY_DRIVER) |
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| 162 | |
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| 163 | /* Values for the `flags' field of a struct bsdtty. This tells which |
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| 164 | elements of the struct bsdtty have been fetched from the system and |
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| 165 | are valid. */ |
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| 166 | #define SGTTY_SET 0x01 |
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| 167 | #define LFLAG_SET 0x02 |
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| 168 | #define TCHARS_SET 0x04 |
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| 169 | #define LTCHARS_SET 0x08 |
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| 170 | |
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| 171 | struct bsdtty { |
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| 172 | struct sgttyb sgttyb; /* Basic BSD tty driver information. */ |
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| 173 | int lflag; /* Local mode flags, like LPASS8. */ |
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| 174 | #if defined (TIOCGETC) |
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| 175 | struct tchars tchars; /* Terminal special characters, including ^S and ^Q. */ |
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| 176 | #endif |
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| 177 | #if defined (TIOCGLTC) |
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| 178 | struct ltchars ltchars; /* 4.2 BSD editing characters */ |
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| 179 | #endif |
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| 180 | int flags; /* Bitmap saying which parts of the struct are valid. */ |
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| 181 | }; |
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| 182 | |
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| 183 | #define TIOTYPE struct bsdtty |
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| 184 | |
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| 185 | static TIOTYPE otio; |
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| 186 | |
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| 187 | static int |
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| 188 | get_tty_settings (tty, tiop) |
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| 189 | int tty; |
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| 190 | TIOTYPE *tiop; |
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| 191 | { |
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| 192 | set_winsize (tty); |
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| 193 | |
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| 194 | tiop->flags = tiop->lflag = 0; |
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| 195 | |
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| 196 | ioctl (tty, TIOCGETP, &(tiop->sgttyb)); |
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| 197 | tiop->flags |= SGTTY_SET; |
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| 198 | |
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| 199 | #if defined (TIOCLGET) |
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| 200 | ioctl (tty, TIOCLGET, &(tiop->lflag)); |
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| 201 | tiop->flags |= LFLAG_SET; |
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| 202 | #endif |
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| 203 | |
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| 204 | #if defined (TIOCGETC) |
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| 205 | ioctl (tty, TIOCGETC, &(tiop->tchars)); |
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| 206 | tiop->flags |= TCHARS_SET; |
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| 207 | #endif |
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| 208 | |
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| 209 | #if defined (TIOCGLTC) |
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| 210 | ioctl (tty, TIOCGLTC, &(tiop->ltchars)); |
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| 211 | tiop->flags |= LTCHARS_SET; |
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| 212 | #endif |
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| 213 | |
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| 214 | return 0; |
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| 215 | } |
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| 216 | |
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| 217 | static int |
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| 218 | set_tty_settings (tty, tiop) |
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| 219 | int tty; |
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| 220 | TIOTYPE *tiop; |
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| 221 | { |
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| 222 | if (tiop->flags & SGTTY_SET) |
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| 223 | { |
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| 224 | ioctl (tty, TIOCSETN, &(tiop->sgttyb)); |
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| 225 | tiop->flags &= ~SGTTY_SET; |
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| 226 | } |
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| 227 | readline_echoing_p = 1; |
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| 228 | |
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| 229 | #if defined (TIOCLSET) |
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| 230 | if (tiop->flags & LFLAG_SET) |
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| 231 | { |
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| 232 | ioctl (tty, TIOCLSET, &(tiop->lflag)); |
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| 233 | tiop->flags &= ~LFLAG_SET; |
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| 234 | } |
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| 235 | #endif |
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| 236 | |
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| 237 | #if defined (TIOCSETC) |
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| 238 | if (tiop->flags & TCHARS_SET) |
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| 239 | { |
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| 240 | ioctl (tty, TIOCSETC, &(tiop->tchars)); |
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| 241 | tiop->flags &= ~TCHARS_SET; |
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| 242 | } |
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| 243 | #endif |
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| 244 | |
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| 245 | #if defined (TIOCSLTC) |
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| 246 | if (tiop->flags & LTCHARS_SET) |
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| 247 | { |
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| 248 | ioctl (tty, TIOCSLTC, &(tiop->ltchars)); |
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| 249 | tiop->flags &= ~LTCHARS_SET; |
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| 250 | } |
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| 251 | #endif |
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| 252 | |
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| 253 | return 0; |
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| 254 | } |
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| 255 | |
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| 256 | static void |
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| 257 | prepare_terminal_settings (meta_flag, otio, tiop) |
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| 258 | int meta_flag; |
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| 259 | TIOTYPE otio, *tiop; |
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| 260 | { |
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| 261 | #if !defined (__GO32__) |
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| 262 | readline_echoing_p = (otio.sgttyb.sg_flags & ECHO); |
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| 263 | |
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| 264 | /* Copy the original settings to the structure we're going to use for |
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| 265 | our settings. */ |
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| 266 | tiop->sgttyb = otio.sgttyb; |
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| 267 | tiop->lflag = otio.lflag; |
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| 268 | #if defined (TIOCGETC) |
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| 269 | tiop->tchars = otio.tchars; |
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| 270 | #endif |
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| 271 | #if defined (TIOCGLTC) |
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| 272 | tiop->ltchars = otio.ltchars; |
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| 273 | #endif |
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| 274 | tiop->flags = otio.flags; |
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| 275 | |
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| 276 | /* First, the basic settings to put us into character-at-a-time, no-echo |
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| 277 | input mode. */ |
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| 278 | tiop->sgttyb.sg_flags &= ~(ECHO | CRMOD); |
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| 279 | tiop->sgttyb.sg_flags |= CBREAK; |
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| 280 | |
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| 281 | /* If this terminal doesn't care how the 8th bit is used, then we can |
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| 282 | use it for the meta-key. If only one of even or odd parity is |
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| 283 | specified, then the terminal is using parity, and we cannot. */ |
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| 284 | #if !defined (ANYP) |
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| 285 | # define ANYP (EVENP | ODDP) |
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| 286 | #endif |
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| 287 | if (((otio.sgttyb.sg_flags & ANYP) == ANYP) || |
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| 288 | ((otio.sgttyb.sg_flags & ANYP) == 0)) |
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| 289 | { |
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| 290 | tiop->sgttyb.sg_flags |= ANYP; |
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| 291 | |
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| 292 | /* Hack on local mode flags if we can. */ |
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| 293 | #if defined (TIOCLGET) |
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| 294 | # if defined (LPASS8) |
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| 295 | tiop->lflag |= LPASS8; |
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| 296 | # endif /* LPASS8 */ |
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| 297 | #endif /* TIOCLGET */ |
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| 298 | } |
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| 299 | |
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| 300 | #if defined (TIOCGETC) |
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| 301 | # if defined (USE_XON_XOFF) |
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| 302 | /* Get rid of terminal output start and stop characters. */ |
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| 303 | tiop->tchars.t_stopc = -1; /* C-s */ |
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| 304 | tiop->tchars.t_startc = -1; /* C-q */ |
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| 305 | |
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| 306 | /* If there is an XON character, bind it to restart the output. */ |
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| 307 | if (otio.tchars.t_startc != -1) |
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| 308 | rl_bind_key (otio.tchars.t_startc, rl_restart_output); |
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| 309 | # endif /* USE_XON_XOFF */ |
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| 310 | |
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| 311 | /* If there is an EOF char, bind _rl_eof_char to it. */ |
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| 312 | if (otio.tchars.t_eofc != -1) |
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| 313 | _rl_eof_char = otio.tchars.t_eofc; |
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| 314 | |
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| 315 | # if defined (NO_KILL_INTR) |
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| 316 | /* Get rid of terminal-generated SIGQUIT and SIGINT. */ |
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| 317 | tiop->tchars.t_quitc = -1; /* C-\ */ |
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| 318 | tiop->tchars.t_intrc = -1; /* C-c */ |
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| 319 | # endif /* NO_KILL_INTR */ |
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| 320 | #endif /* TIOCGETC */ |
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| 321 | |
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| 322 | #if defined (TIOCGLTC) |
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| 323 | /* Make the interrupt keys go away. Just enough to make people happy. */ |
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| 324 | tiop->ltchars.t_dsuspc = -1; /* C-y */ |
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| 325 | tiop->ltchars.t_lnextc = -1; /* C-v */ |
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| 326 | #endif /* TIOCGLTC */ |
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| 327 | #endif /* !__GO32__ */ |
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| 328 | } |
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| 329 | |
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| 330 | #else /* !defined (NEW_TTY_DRIVER) */ |
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| 331 | |
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| 332 | #if !defined (VMIN) |
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| 333 | # define VMIN VEOF |
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| 334 | #endif |
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| 335 | |
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| 336 | #if !defined (VTIME) |
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| 337 | # define VTIME VEOL |
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| 338 | #endif |
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| 339 | |
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| 340 | #if defined (TERMIOS_TTY_DRIVER) |
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| 341 | # define TIOTYPE struct termios |
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| 342 | # define DRAIN_OUTPUT(fd) tcdrain (fd) |
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| 343 | # define GETATTR(tty, tiop) (tcgetattr (tty, tiop)) |
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| 344 | # ifdef M_UNIX |
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| 345 | # define SETATTR(tty, tiop) (tcsetattr (tty, TCSANOW, tiop)) |
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| 346 | # else |
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| 347 | # define SETATTR(tty, tiop) (tcsetattr (tty, TCSADRAIN, tiop)) |
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| 348 | # endif /* !M_UNIX */ |
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| 349 | #else |
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| 350 | # define TIOTYPE struct termio |
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| 351 | # define DRAIN_OUTPUT(fd) |
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| 352 | # define GETATTR(tty, tiop) (ioctl (tty, TCGETA, tiop)) |
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| 353 | # define SETATTR(tty, tiop) (ioctl (tty, TCSETA, tiop)) |
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| 354 | #endif /* !TERMIOS_TTY_DRIVER */ |
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| 355 | |
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| 356 | static TIOTYPE otio; |
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| 357 | |
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| 358 | #if defined (FLUSHO) |
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| 359 | # define OUTPUT_BEING_FLUSHED(tp) (tp->c_lflag & FLUSHO) |
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| 360 | #else |
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| 361 | # define OUTPUT_BEING_FLUSHED(tp) 0 |
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| 362 | #endif |
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| 363 | |
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| 364 | static void |
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| 365 | rltty_warning (msg) |
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| 366 | char *msg; |
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| 367 | { |
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| 368 | fprintf (stderr, "readline: warning: %s\n", msg); |
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| 369 | } |
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| 370 | |
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| 371 | #if defined (_AIX) |
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| 372 | void |
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| 373 | setopost(tp) |
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| 374 | TIOTYPE *tp; |
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| 375 | { |
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| 376 | if ((tp->c_oflag & OPOST) == 0) |
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| 377 | { |
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| 378 | rltty_warning ("turning on OPOST for terminal\r"); |
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| 379 | tp->c_oflag |= OPOST|ONLCR; |
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| 380 | } |
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| 381 | } |
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| 382 | #endif |
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| 383 | |
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| 384 | static int |
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| 385 | get_tty_settings (tty, tiop) |
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| 386 | int tty; |
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| 387 | TIOTYPE *tiop; |
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| 388 | { |
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| 389 | int ioctl_ret; |
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| 390 | |
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| 391 | set_winsize (tty); |
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| 392 | |
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| 393 | while (1) |
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| 394 | { |
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| 395 | ioctl_ret = GETATTR (tty, tiop); |
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| 396 | if (ioctl_ret < 0) |
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| 397 | { |
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| 398 | if (errno != EINTR) |
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| 399 | return -1; |
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| 400 | else |
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| 401 | continue; |
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| 402 | } |
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| 403 | if (OUTPUT_BEING_FLUSHED (tiop)) |
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| 404 | { |
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| 405 | #if defined (FLUSHO) && defined (_AIX41) |
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| 406 | rltty_warning ("turning off output flushing"); |
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| 407 | tiop->c_lflag &= ~FLUSHO; |
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| 408 | break; |
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| 409 | #else |
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| 410 | continue; |
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| 411 | #endif |
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| 412 | } |
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| 413 | break; |
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| 414 | } |
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| 415 | |
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| 416 | #if defined (_AIX) |
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| 417 | setopost(tiop); |
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| 418 | #endif |
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| 419 | |
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| 420 | return 0; |
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| 421 | } |
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| 422 | |
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| 423 | static int |
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| 424 | set_tty_settings (tty, tiop) |
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| 425 | int tty; |
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| 426 | TIOTYPE *tiop; |
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| 427 | { |
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| 428 | while (SETATTR (tty, tiop) < 0) |
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| 429 | { |
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| 430 | if (errno != EINTR) |
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| 431 | return -1; |
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| 432 | errno = 0; |
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| 433 | } |
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| 434 | |
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| 435 | #if 0 |
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| 436 | |
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| 437 | #if defined (TERMIOS_TTY_DRIVER) |
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| 438 | # if defined (__ksr1__) |
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| 439 | if (ksrflow) |
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| 440 | { |
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| 441 | ksrflow = 0; |
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| 442 | tcflow (tty, TCOON); |
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| 443 | } |
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| 444 | # else /* !ksr1 */ |
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| 445 | tcflow (tty, TCOON); /* Simulate a ^Q. */ |
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| 446 | # endif /* !ksr1 */ |
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| 447 | #else |
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| 448 | ioctl (tty, TCXONC, 1); /* Simulate a ^Q. */ |
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| 449 | #endif /* !TERMIOS_TTY_DRIVER */ |
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| 450 | |
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| 451 | #endif |
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| 452 | |
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| 453 | return 0; |
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| 454 | } |
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| 455 | |
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| 456 | static void |
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| 457 | prepare_terminal_settings (meta_flag, otio, tiop) |
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| 458 | int meta_flag; |
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| 459 | TIOTYPE otio, *tiop; |
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| 460 | { |
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| 461 | readline_echoing_p = (otio.c_lflag & ECHO); |
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| 462 | |
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| 463 | tiop->c_lflag &= ~(ICANON | ECHO); |
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| 464 | |
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| 465 | if ((unsigned char) otio.c_cc[VEOF] != (unsigned char) _POSIX_VDISABLE) |
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| 466 | _rl_eof_char = otio.c_cc[VEOF]; |
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| 467 | |
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| 468 | #if defined (USE_XON_XOFF) |
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| 469 | #if defined (IXANY) |
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| 470 | tiop->c_iflag &= ~(IXON | IXOFF | IXANY); |
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| 471 | #else |
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| 472 | /* `strict' Posix systems do not define IXANY. */ |
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| 473 | tiop->c_iflag &= ~(IXON | IXOFF); |
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| 474 | #endif /* IXANY */ |
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| 475 | #endif /* USE_XON_XOFF */ |
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| 476 | |
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| 477 | /* Only turn this off if we are using all 8 bits. */ |
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| 478 | if (((tiop->c_cflag & CSIZE) == CS8) || meta_flag) |
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| 479 | tiop->c_iflag &= ~(ISTRIP | INPCK); |
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| 480 | |
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| 481 | /* Make sure we differentiate between CR and NL on input. */ |
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| 482 | tiop->c_iflag &= ~(ICRNL | INLCR); |
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| 483 | |
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| 484 | #if !defined (HANDLE_SIGNALS) |
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| 485 | tiop->c_lflag &= ~ISIG; |
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| 486 | #else |
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| 487 | tiop->c_lflag |= ISIG; |
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| 488 | #endif |
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| 489 | |
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| 490 | tiop->c_cc[VMIN] = 1; |
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| 491 | tiop->c_cc[VTIME] = 0; |
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| 492 | |
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| 493 | #if defined (FLUSHO) |
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| 494 | if (OUTPUT_BEING_FLUSHED (tiop)) |
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| 495 | { |
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| 496 | tiop->c_lflag &= ~FLUSHO; |
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| 497 | otio.c_lflag &= ~FLUSHO; |
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| 498 | } |
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| 499 | #endif |
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| 500 | |
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| 501 | /* Turn off characters that we need on Posix systems with job control, |
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| 502 | just to be sure. This includes ^Y and ^V. This should not really |
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| 503 | be necessary. */ |
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| 504 | #if defined (TERMIOS_TTY_DRIVER) && defined (_POSIX_VDISABLE) |
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| 505 | |
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| 506 | #if defined (VLNEXT) |
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| 507 | tiop->c_cc[VLNEXT] = _POSIX_VDISABLE; |
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| 508 | #endif |
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| 509 | |
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| 510 | #if defined (VDSUSP) |
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| 511 | tiop->c_cc[VDSUSP] = _POSIX_VDISABLE; |
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| 512 | #endif |
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| 513 | |
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| 514 | #endif /* TERMIOS_TTY_DRIVER && _POSIX_VDISABLE */ |
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| 515 | } |
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| 516 | #endif /* NEW_TTY_DRIVER */ |
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| 517 | |
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| 518 | /* Put the terminal in CBREAK mode so that we can detect key presses. */ |
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| 519 | void |
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| 520 | rl_prep_terminal (meta_flag) |
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| 521 | int meta_flag; |
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| 522 | { |
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| 523 | #if !defined (__GO32__) |
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| 524 | int tty; |
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| 525 | TIOTYPE tio; |
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| 526 | |
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| 527 | if (terminal_prepped) |
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| 528 | return; |
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| 529 | |
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| 530 | /* Try to keep this function from being INTerrupted. */ |
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| 531 | block_sigint (); |
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| 532 | |
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| 533 | tty = fileno (rl_instream); |
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| 534 | |
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| 535 | if (get_tty_settings (tty, &tio) < 0) |
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| 536 | { |
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| 537 | release_sigint (); |
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| 538 | return; |
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| 539 | } |
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| 540 | |
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| 541 | otio = tio; |
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| 542 | |
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| 543 | prepare_terminal_settings (meta_flag, otio, &tio); |
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| 544 | |
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| 545 | if (set_tty_settings (tty, &tio) < 0) |
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| 546 | { |
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| 547 | release_sigint (); |
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| 548 | return; |
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| 549 | } |
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| 550 | |
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| 551 | if (_rl_enable_keypad) |
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| 552 | _rl_control_keypad (1); |
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| 553 | |
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| 554 | fflush (rl_outstream); |
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| 555 | terminal_prepped = 1; |
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| 556 | |
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| 557 | release_sigint (); |
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| 558 | #endif /* !__GO32__ */ |
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| 559 | } |
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| 560 | |
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| 561 | /* Restore the terminal's normal settings and modes. */ |
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| 562 | void |
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| 563 | rl_deprep_terminal () |
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| 564 | { |
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| 565 | #if !defined (__GO32__) |
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| 566 | int tty; |
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| 567 | |
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| 568 | if (!terminal_prepped) |
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| 569 | return; |
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| 570 | |
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| 571 | /* Try to keep this function from being interrupted. */ |
---|
| 572 | block_sigint (); |
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| 573 | |
---|
| 574 | tty = fileno (rl_instream); |
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| 575 | |
---|
| 576 | if (_rl_enable_keypad) |
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| 577 | _rl_control_keypad (0); |
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| 578 | |
---|
| 579 | fflush (rl_outstream); |
---|
| 580 | |
---|
| 581 | if (set_tty_settings (tty, &otio) < 0) |
---|
| 582 | { |
---|
| 583 | release_sigint (); |
---|
| 584 | return; |
---|
| 585 | } |
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| 586 | |
---|
| 587 | terminal_prepped = 0; |
---|
| 588 | |
---|
| 589 | release_sigint (); |
---|
| 590 | #endif /* !__GO32__ */ |
---|
| 591 | } |
---|
| 592 | |
---|
| 593 | /* **************************************************************** */ |
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| 594 | /* */ |
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| 595 | /* Bogus Flow Control */ |
---|
| 596 | /* */ |
---|
| 597 | /* **************************************************************** */ |
---|
| 598 | |
---|
| 599 | int |
---|
| 600 | rl_restart_output (count, key) |
---|
| 601 | int count, key; |
---|
| 602 | { |
---|
| 603 | int fildes = fileno (rl_outstream); |
---|
| 604 | #if defined (TIOCSTART) |
---|
| 605 | #if defined (apollo) |
---|
| 606 | ioctl (&fildes, TIOCSTART, 0); |
---|
| 607 | #else |
---|
| 608 | ioctl (fildes, TIOCSTART, 0); |
---|
| 609 | #endif /* apollo */ |
---|
| 610 | |
---|
| 611 | #else /* !TIOCSTART */ |
---|
| 612 | # if defined (TERMIOS_TTY_DRIVER) |
---|
| 613 | # if defined (__ksr1__) |
---|
| 614 | if (ksrflow) |
---|
| 615 | { |
---|
| 616 | ksrflow = 0; |
---|
| 617 | tcflow (fildes, TCOON); |
---|
| 618 | } |
---|
| 619 | # else /* !ksr1 */ |
---|
| 620 | tcflow (fildes, TCOON); /* Simulate a ^Q. */ |
---|
| 621 | # endif /* !ksr1 */ |
---|
| 622 | # else /* !TERMIOS_TTY_DRIVER */ |
---|
| 623 | # if defined (TCXONC) |
---|
| 624 | ioctl (fildes, TCXONC, TCOON); |
---|
| 625 | # endif /* TCXONC */ |
---|
| 626 | # endif /* !TERMIOS_TTY_DRIVER */ |
---|
| 627 | #endif /* !TIOCSTART */ |
---|
| 628 | |
---|
| 629 | return 0; |
---|
| 630 | } |
---|
| 631 | |
---|
| 632 | int |
---|
| 633 | rl_stop_output (count, key) |
---|
| 634 | int count, key; |
---|
| 635 | { |
---|
| 636 | int fildes = fileno (rl_instream); |
---|
| 637 | |
---|
| 638 | #if defined (TIOCSTOP) |
---|
| 639 | # if defined (apollo) |
---|
| 640 | ioctl (&fildes, TIOCSTOP, 0); |
---|
| 641 | # else |
---|
| 642 | ioctl (fildes, TIOCSTOP, 0); |
---|
| 643 | # endif /* apollo */ |
---|
| 644 | #else /* !TIOCSTOP */ |
---|
| 645 | # if defined (TERMIOS_TTY_DRIVER) |
---|
| 646 | # if defined (__ksr1__) |
---|
| 647 | ksrflow = 1; |
---|
| 648 | # endif /* ksr1 */ |
---|
| 649 | tcflow (fildes, TCOOFF); |
---|
| 650 | # else |
---|
| 651 | # if defined (TCXONC) |
---|
| 652 | ioctl (fildes, TCXONC, TCOON); |
---|
| 653 | # endif /* TCXONC */ |
---|
| 654 | # endif /* !TERMIOS_TTY_DRIVER */ |
---|
| 655 | #endif /* !TIOCSTOP */ |
---|
| 656 | |
---|
| 657 | return 0; |
---|
| 658 | } |
---|
| 659 | |
---|
| 660 | /* **************************************************************** */ |
---|
| 661 | /* */ |
---|
| 662 | /* Default Key Bindings */ |
---|
| 663 | /* */ |
---|
| 664 | /* **************************************************************** */ |
---|
| 665 | void |
---|
| 666 | rltty_set_default_bindings (kmap) |
---|
| 667 | Keymap kmap; |
---|
| 668 | { |
---|
| 669 | TIOTYPE ttybuff; |
---|
| 670 | int tty = fileno (rl_instream); |
---|
| 671 | |
---|
| 672 | #if defined (NEW_TTY_DRIVER) |
---|
| 673 | |
---|
| 674 | #define SET_SPECIAL(sc, func) \ |
---|
| 675 | do \ |
---|
| 676 | { \ |
---|
| 677 | int ic; \ |
---|
| 678 | ic = sc; \ |
---|
| 679 | if (ic != -1 && kmap[ic].type == ISFUNC) \ |
---|
| 680 | kmap[ic].function = func; \ |
---|
| 681 | } \ |
---|
| 682 | while (0) |
---|
| 683 | |
---|
| 684 | if (get_tty_settings (tty, &ttybuff) == 0) |
---|
| 685 | { |
---|
| 686 | if (ttybuff.flags & SGTTY_SET) |
---|
| 687 | { |
---|
| 688 | SET_SPECIAL (ttybuff.sgttyb.sg_erase, rl_rubout); |
---|
| 689 | SET_SPECIAL (ttybuff.sgttyb.sg_kill, rl_unix_line_discard); |
---|
| 690 | } |
---|
| 691 | |
---|
| 692 | # if defined (TIOCGLTC) |
---|
| 693 | if (ttybuff.flags & LTCHARS_SET) |
---|
| 694 | { |
---|
| 695 | SET_SPECIAL (ttybuff.ltchars.t_werasc, rl_unix_word_rubout); |
---|
| 696 | SET_SPECIAL (ttybuff.ltchars.t_lnextc, rl_quoted_insert); |
---|
| 697 | } |
---|
| 698 | # endif /* TIOCGLTC */ |
---|
| 699 | } |
---|
| 700 | |
---|
| 701 | #else /* !NEW_TTY_DRIVER */ |
---|
| 702 | |
---|
| 703 | #define SET_SPECIAL(sc, func) \ |
---|
| 704 | do \ |
---|
| 705 | { \ |
---|
| 706 | unsigned char uc; \ |
---|
| 707 | uc = ttybuff.c_cc[sc]; \ |
---|
| 708 | if (uc != (unsigned char)_POSIX_VDISABLE && kmap[uc].type == ISFUNC) \ |
---|
| 709 | kmap[uc].function = func; \ |
---|
| 710 | } \ |
---|
| 711 | while (0) |
---|
| 712 | |
---|
| 713 | if (get_tty_settings (tty, &ttybuff) == 0) |
---|
| 714 | { |
---|
| 715 | SET_SPECIAL (VERASE, rl_rubout); |
---|
| 716 | SET_SPECIAL (VKILL, rl_unix_line_discard); |
---|
| 717 | |
---|
| 718 | # if defined (VLNEXT) && defined (TERMIOS_TTY_DRIVER) |
---|
| 719 | SET_SPECIAL (VLNEXT, rl_quoted_insert); |
---|
| 720 | # endif /* VLNEXT && TERMIOS_TTY_DRIVER */ |
---|
| 721 | |
---|
| 722 | # if defined (VWERASE) && defined (TERMIOS_TTY_DRIVER) |
---|
| 723 | SET_SPECIAL (VWERASE, rl_unix_word_rubout); |
---|
| 724 | # endif /* VWERASE && TERMIOS_TTY_DRIVER */ |
---|
| 725 | } |
---|
| 726 | #endif /* !NEW_TTY_DRIVER */ |
---|
| 727 | } |
---|