| 1 | /* rldefs.h -- an attempt to isolate some of the system-specific defines |
| 2 | for readline. This should be included after any files that define |
| 3 | system-specific constants like _POSIX_VERSION or USG. */ |
| 4 | |
| 5 | /* Copyright (C) 1987,1989 Free Software Foundation, Inc. |
| 6 | |
| 7 | This file contains the Readline Library (the Library), a set of |
| 8 | routines for providing Emacs style line input to programs that ask |
| 9 | for it. |
| 10 | |
| 11 | The Library is free software; you can redistribute it and/or modify |
| 12 | it under the terms of the GNU General Public License as published by |
| 13 | the Free Software Foundation; either version 1, or (at your option) |
| 14 | any later version. |
| 15 | |
| 16 | The Library is distributed in the hope that it will be useful, but |
| 17 | WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 19 | General Public License for more details. |
| 20 | |
| 21 | The GNU General Public License is often shipped with GNU software, and |
| 22 | is generally kept in a file called COPYING or LICENSE. If you do not |
| 23 | have a copy of the license, write to the Free Software Foundation, |
| 24 | 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 25 | |
| 26 | #if !defined (_RLDEFS_H) |
| 27 | #define _RLDEFS_H |
| 28 | |
| 29 | #if defined (__GNUC__) |
| 30 | # undef alloca |
| 31 | # define alloca __builtin_alloca |
| 32 | #else |
| 33 | # if defined (sparc) || defined (HAVE_ALLOCA_H) |
| 34 | # include <alloca.h> |
| 35 | # endif |
| 36 | #endif |
| 37 | |
| 38 | |
| 39 | #define NEW_TTY_DRIVER |
| 40 | #define HAVE_BSD_SIGNALS |
| 41 | /* #define USE_XON_XOFF */ |
| 42 | |
| 43 | #if defined(__MSDOS__) || defined(_WIN32) |
| 44 | #define NO_SYS_FILE |
| 45 | #define SIGALRM 1234 |
| 46 | #undef NEW_TTY_DRIVER |
| 47 | #undef HAVE_BSD_SIGNALS |
| 48 | #define MINIMAL |
| 49 | #endif |
| 50 | |
| 51 | #if defined (__linux__) |
| 52 | # include <termcap.h> |
| 53 | #endif /* __linux__ */ |
| 54 | |
| 55 | /* Some USG machines have BSD signal handling (sigblock, sigsetmask, etc.) */ |
| 56 | /* CYGNUS LOCAL accept __hpux as well as hpux for HP compiler in ANSI mode. */ |
| 57 | #if defined (USG) && !(defined (hpux) || defined (__hpux)) |
| 58 | # undef HAVE_BSD_SIGNALS |
| 59 | #endif |
| 60 | |
| 61 | #define ScreenCols() 80 |
| 62 | #define ScreenRows() 24 |
| 63 | #define ScreenSetCursor() abort(); |
| 64 | #define ScreenGetCursor() abort(); |
| 65 | |
| 66 | /* System V machines use termio. */ |
| 67 | #if !defined (_POSIX_VERSION) |
| 68 | /* CYGNUS LOCAL accept __hpux as well as hpux for HP compiler in ANSI mode. |
| 69 | Add __osf__ to list of machines to force use of termio.h */ |
| 70 | # if defined (USG) || defined (hpux) || defined (__hpux) || defined (Xenix) || defined (sgi) || defined (DGUX) || defined (__osf__) |
| 71 | # undef NEW_TTY_DRIVER |
| 72 | # define TERMIO_TTY_DRIVER |
| 73 | # include <termio.h> |
| 74 | # if !defined (TCOON) |
| 75 | # define TCOON 1 |
| 76 | # endif |
| 77 | # endif /* USG || hpux || Xenix || sgi || DUGX || __osf__ */ |
| 78 | #endif /* !_POSIX_VERSION */ |
| 79 | |
| 80 | /* Posix systems use termios and the Posix signal functions. */ |
| 81 | #if defined (_POSIX_VERSION) |
| 82 | # if !defined (TERMIOS_MISSING) |
| 83 | # undef NEW_TTY_DRIVER |
| 84 | # define TERMIOS_TTY_DRIVER |
| 85 | # include <termios.h> |
| 86 | # endif /* !TERMIOS_MISSING */ |
| 87 | # define HAVE_POSIX_SIGNALS |
| 88 | # if !defined (O_NDELAY) |
| 89 | # define O_NDELAY O_NONBLOCK /* Posix-style non-blocking i/o */ |
| 90 | # endif /* O_NDELAY */ |
| 91 | #endif /* _POSIX_VERSION */ |
| 92 | |
| 93 | /* System V.3 machines have the old 4.1 BSD `reliable' signal interface. */ |
| 94 | #if !defined (HAVE_BSD_SIGNALS) && !defined (HAVE_POSIX_SIGNALS) |
| 95 | # if defined (USGr3) |
| 96 | # if !defined (HAVE_USG_SIGHOLD) |
| 97 | # define HAVE_USG_SIGHOLD |
| 98 | # endif /* !HAVE_USG_SIGHOLD */ |
| 99 | # endif /* USGr3 */ |
| 100 | #endif /* !HAVE_BSD_SIGNALS && !HAVE_POSIX_SIGNALS */ |
| 101 | |
| 102 | /* Other (BSD) machines use sgtty. */ |
| 103 | #if defined (NEW_TTY_DRIVER) |
| 104 | # include <sgtty.h> |
| 105 | #endif |
| 106 | |
| 107 | /* Define _POSIX_VDISABLE if we are not using the `new' tty driver and |
| 108 | it is not already defined. It is used both to determine if a |
| 109 | special character is disabled and to disable certain special |
| 110 | characters. Posix systems should set to 0, USG systems to -1. */ |
| 111 | #if !defined (NEW_TTY_DRIVER) && !defined (_POSIX_VDISABLE) |
| 112 | # if defined (_POSIX_VERSION) |
| 113 | # define _POSIX_VDISABLE 0 |
| 114 | # else /* !_POSIX_VERSION */ |
| 115 | # define _POSIX_VDISABLE -1 |
| 116 | # endif /* !_POSIX_VERSION */ |
| 117 | #endif /* !NEW_TTY_DRIVER && !_POSIX_VDISABLE */ |
| 118 | |
| 119 | #if 1 |
| 120 | # define D_NAMLEN(d) strlen ((d)->d_name) |
| 121 | #else /* !1 */ |
| 122 | |
| 123 | #if !defined (SHELL) && (defined (_POSIX_VERSION) || defined (USGr3)) |
| 124 | # if !defined (HAVE_DIRENT_H) |
| 125 | # define HAVE_DIRENT_H |
| 126 | # endif /* !HAVE_DIRENT_H */ |
| 127 | #endif /* !SHELL && (_POSIX_VERSION || USGr3) */ |
| 128 | |
| 129 | #if defined (HAVE_DIRENT_H) |
| 130 | # include <dirent.h> |
| 131 | # if !defined (direct) |
| 132 | # define direct dirent |
| 133 | # endif /* !direct */ |
| 134 | # define D_NAMLEN(d) strlen ((d)->d_name) |
| 135 | #else /* !HAVE_DIRENT_H */ |
| 136 | # define D_NAMLEN(d) ((d)->d_namlen) |
| 137 | # if defined (USG) |
| 138 | # if defined (Xenix) |
| 139 | # include <sys/ndir.h> |
| 140 | # else /* !Xenix (but USG...) */ |
| 141 | # include "ndir.h" |
| 142 | # endif /* !Xenix */ |
| 143 | # else /* !USG */ |
| 144 | # include <sys/dir.h> |
| 145 | # endif /* !USG */ |
| 146 | #endif /* !HAVE_DIRENT_H */ |
| 147 | #endif /* !1 */ |
| 148 | |
| 149 | #if defined (USG) && defined (TIOCGWINSZ) && !defined (Linux) |
| 150 | # if defined (_AIX) |
| 151 | /* AIX 4.x seems to reference struct uio within a prototype |
| 152 | in stream.h, but doesn't cause the uio include file to |
| 153 | be included. */ |
| 154 | # include <sys/uio.h> |
| 155 | # endif |
| 156 | # include <sys/stream.h> |
| 157 | # if defined (HAVE_SYS_PTEM_H) |
| 158 | # include <sys/ptem.h> |
| 159 | # endif /* HAVE_SYS_PTEM_H */ |
| 160 | # if defined (HAVE_SYS_PTE_H) |
| 161 | # include <sys/pte.h> |
| 162 | # endif /* HAVE_SYS_PTE_H */ |
| 163 | #endif /* USG && TIOCGWINSZ && !Linux */ |
| 164 | |
| 165 | /* Posix macro to check file in statbuf for directory-ness. |
| 166 | This requires that <sys/stat.h> be included before this test. */ |
| 167 | #if defined (S_IFDIR) && !defined (S_ISDIR) |
| 168 | #define S_ISDIR(m) (((m)&S_IFMT) == S_IFDIR) |
| 169 | #endif |
| 170 | /* Posix macro to check file in statbuf for file-ness. |
| 171 | This requires that <sys/stat.h> be included before this test. */ |
| 172 | #if defined (S_IFREG) && !defined (S_ISREG) |
| 173 | #define S_ISREG(m) (((m)&S_IFMT) == S_IFREG) |
| 174 | #endif |
| 175 | |
| 176 | #if !defined (strchr) && !defined (__STDC__) |
| 177 | extern char *strchr (), *strrchr (); |
| 178 | #endif /* !strchr && !__STDC__ */ |
| 179 | |
| 180 | #if defined (HAVE_VARARGS_H) |
| 181 | # include <varargs.h> |
| 182 | #endif /* HAVE_VARARGS_H */ |
| 183 | |
| 184 | /* This definition is needed by readline.c, rltty.c, and signals.c. */ |
| 185 | /* If on, then readline handles signals in a way that doesn't screw. */ |
| 186 | #define HANDLE_SIGNALS |
| 187 | |
| 188 | #if defined(_WIN32) || defined(__MSDOS__) |
| 189 | #undef HANDLE_SIGNALS |
| 190 | #endif |
| 191 | |
| 192 | |
| 193 | #if !defined (emacs_mode) |
| 194 | # define no_mode -1 |
| 195 | # define vi_mode 0 |
| 196 | # define emacs_mode 1 |
| 197 | #endif |
| 198 | |
| 199 | /* Define some macros for dealing with assorted signalling disciplines. |
| 200 | |
| 201 | These macros provide a way to use signal blocking and disabling |
| 202 | without smothering your code in a pile of #ifdef's. |
| 203 | |
| 204 | SIGNALS_UNBLOCK; Stop blocking all signals. |
| 205 | |
| 206 | { |
| 207 | SIGNALS_DECLARE_SAVED (name); Declare a variable to save the |
| 208 | signal blocking state. |
| 209 | ... |
| 210 | SIGNALS_BLOCK (SIGSTOP, name); Block a signal, and save the previous |
| 211 | state for restoration later. |
| 212 | ... |
| 213 | SIGNALS_RESTORE (name); Restore previous signals. |
| 214 | } |
| 215 | |
| 216 | */ |
| 217 | |
| 218 | #ifdef HAVE_POSIX_SIGNALS |
| 219 | /* POSIX signals */ |
| 220 | |
| 221 | #define SIGNALS_UNBLOCK \ |
| 222 | do { sigset_t set; \ |
| 223 | sigemptyset (&set); \ |
| 224 | sigprocmask (SIG_SETMASK, &set, (sigset_t *)NULL); \ |
| 225 | } while (0) |
| 226 | |
| 227 | #define SIGNALS_DECLARE_SAVED(name) sigset_t name |
| 228 | |
| 229 | #define SIGNALS_BLOCK(SIG, saved) \ |
| 230 | do { sigset_t set; \ |
| 231 | sigemptyset (&set); \ |
| 232 | sigaddset (&set, SIG); \ |
| 233 | sigprocmask (SIG_BLOCK, &set, &saved); \ |
| 234 | } while (0) |
| 235 | |
| 236 | #define SIGNALS_RESTORE(saved) \ |
| 237 | sigprocmask (SIG_SETMASK, &saved, (sigset_t *)NULL) |
| 238 | |
| 239 | |
| 240 | #else /* HAVE_POSIX_SIGNALS */ |
| 241 | #ifdef HAVE_BSD_SIGNALS |
| 242 | /* BSD signals */ |
| 243 | |
| 244 | #define SIGNALS_UNBLOCK sigsetmask (0) |
| 245 | #define SIGNALS_DECLARE_SAVED(name) int name |
| 246 | #define SIGNALS_BLOCK(SIG, saved) saved = sigblock (sigmask (SIG)) |
| 247 | #define SIGNALS_RESTORE(saved) sigsetmask (saved) |
| 248 | |
| 249 | |
| 250 | #else /* HAVE_BSD_SIGNALS */ |
| 251 | /* None of the Above */ |
| 252 | |
| 253 | #define SIGNALS_UNBLOCK /* nothing */ |
| 254 | #define SIGNALS_DECLARE_SAVED(name) /* nothing */ |
| 255 | #define SIGNALS_BLOCK(SIG, saved) /* nothing */ |
| 256 | #define SIGNALS_RESTORE(saved) /* nothing */ |
| 257 | |
| 258 | |
| 259 | #endif /* HAVE_BSD_SIGNALS */ |
| 260 | #endif /* HAVE_POSIX_SIGNALS */ |
| 261 | |
| 262 | #if !defined (strchr) |
| 263 | extern char *strchr (); |
| 264 | #endif |
| 265 | #if !defined (strrchr) |
| 266 | extern char *strrchr (); |
| 267 | #endif |
| 268 | #ifdef __STDC__ |
| 269 | #include <stddef.h> |
| 270 | extern size_t strlen (const char *s); |
| 271 | #endif /* __STDC__ */ |
| 272 | |
| 273 | /* End of signal handling definitions. */ |
| 274 | #endif /* !_RLDEFS_H */ |