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5e98bbab PB |
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 | ||
9e9cf21f | 38 | |
5e98bbab PB |
39 | #define NEW_TTY_DRIVER |
40 | #define HAVE_BSD_SIGNALS | |
41 | /* #define USE_XON_XOFF */ | |
42 | ||
9e9cf21f MM |
43 | #if defined(__MSDOS__) || defined(_MSC_VER) |
44 | #define NO_SYS_FILE | |
45 | #define SIGALRM 1234 | |
5e98bbab PB |
46 | #undef NEW_TTY_DRIVER |
47 | #undef HAVE_BSD_SIGNALS | |
9e9cf21f | 48 | #define MINIMAL |
5e98bbab PB |
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.) */ | |
f550cec5 PB |
56 | /* CYGNUS LOCAL accept __hpux as well as hpux for HP compiler in ANSI mode. */ |
57 | #if defined (USG) && !(defined (hpux) || defined (__hpux)) | |
5e98bbab PB |
58 | # undef HAVE_BSD_SIGNALS |
59 | #endif | |
60 | ||
9e9cf21f MM |
61 | #if defined (__WIN32__) && !defined(_MSC_VER) |
62 | #undef NEW_TTY_DRIVER | |
63 | #define MINIMAL | |
64 | #undef HAVE_BSD_SIGNALS | |
65 | #define TERMIOS_TTY_DRIVER | |
66 | #undef HANDLE_SIGNALS | |
67 | #include <termios.h> | |
68 | /*#define HAVE_POSIX_SIGNALS*/ | |
69 | #endif | |
70 | ||
5e98bbab PB |
71 | /* System V machines use termio. */ |
72 | #if !defined (_POSIX_VERSION) | |
f550cec5 PB |
73 | /* CYGNUS LOCAL accept __hpux as well as hpux for HP compiler in ANSI mode. */ |
74 | # if defined (USG) || defined (hpux) || defined (__hpux) || defined (Xenix) || defined (sgi) || defined (DGUX) | |
5e98bbab PB |
75 | # undef NEW_TTY_DRIVER |
76 | # define TERMIO_TTY_DRIVER | |
77 | # include <termio.h> | |
78 | # if !defined (TCOON) | |
79 | # define TCOON 1 | |
80 | # endif | |
81 | # endif /* USG || hpux || Xenix || sgi || DUGX */ | |
82 | #endif /* !_POSIX_VERSION */ | |
83 | ||
84 | /* Posix systems use termios and the Posix signal functions. */ | |
85 | #if defined (_POSIX_VERSION) | |
86 | # if !defined (TERMIOS_MISSING) | |
87 | # undef NEW_TTY_DRIVER | |
88 | # define TERMIOS_TTY_DRIVER | |
89 | # include <termios.h> | |
90 | # endif /* !TERMIOS_MISSING */ | |
91 | # define HAVE_POSIX_SIGNALS | |
92 | # if !defined (O_NDELAY) | |
93 | # define O_NDELAY O_NONBLOCK /* Posix-style non-blocking i/o */ | |
94 | # endif /* O_NDELAY */ | |
95 | #endif /* _POSIX_VERSION */ | |
96 | ||
97 | /* System V.3 machines have the old 4.1 BSD `reliable' signal interface. */ | |
98 | #if !defined (HAVE_BSD_SIGNALS) && !defined (HAVE_POSIX_SIGNALS) | |
99 | # if defined (USGr3) | |
100 | # if !defined (HAVE_USG_SIGHOLD) | |
101 | # define HAVE_USG_SIGHOLD | |
102 | # endif /* !HAVE_USG_SIGHOLD */ | |
103 | # endif /* USGr3 */ | |
104 | #endif /* !HAVE_BSD_SIGNALS && !HAVE_POSIX_SIGNALS */ | |
105 | ||
106 | /* Other (BSD) machines use sgtty. */ | |
107 | #if defined (NEW_TTY_DRIVER) | |
108 | # include <sgtty.h> | |
109 | #endif | |
110 | ||
111 | /* Define _POSIX_VDISABLE if we are not using the `new' tty driver and | |
112 | it is not already defined. It is used both to determine if a | |
113 | special character is disabled and to disable certain special | |
114 | characters. Posix systems should set to 0, USG systems to -1. */ | |
115 | #if !defined (NEW_TTY_DRIVER) && !defined (_POSIX_VDISABLE) | |
116 | # if defined (_POSIX_VERSION) | |
117 | # define _POSIX_VDISABLE 0 | |
118 | # else /* !_POSIX_VERSION */ | |
119 | # define _POSIX_VDISABLE -1 | |
120 | # endif /* !_POSIX_VERSION */ | |
121 | #endif /* !NEW_TTY_DRIVER && !_POSIX_VDISABLE */ | |
122 | ||
123 | #if 1 | |
124 | # define D_NAMLEN(d) strlen ((d)->d_name) | |
125 | #else /* !1 */ | |
126 | ||
127 | #if !defined (SHELL) && (defined (_POSIX_VERSION) || defined (USGr3)) | |
128 | # if !defined (HAVE_DIRENT_H) | |
129 | # define HAVE_DIRENT_H | |
130 | # endif /* !HAVE_DIRENT_H */ | |
131 | #endif /* !SHELL && (_POSIX_VERSION || USGr3) */ | |
132 | ||
133 | #if defined (HAVE_DIRENT_H) | |
134 | # include <dirent.h> | |
135 | # if !defined (direct) | |
136 | # define direct dirent | |
137 | # endif /* !direct */ | |
138 | # define D_NAMLEN(d) strlen ((d)->d_name) | |
139 | #else /* !HAVE_DIRENT_H */ | |
140 | # define D_NAMLEN(d) ((d)->d_namlen) | |
141 | # if defined (USG) | |
142 | # if defined (Xenix) | |
143 | # include <sys/ndir.h> | |
144 | # else /* !Xenix (but USG...) */ | |
145 | # include "ndir.h" | |
146 | # endif /* !Xenix */ | |
147 | # else /* !USG */ | |
148 | # include <sys/dir.h> | |
149 | # endif /* !USG */ | |
150 | #endif /* !HAVE_DIRENT_H */ | |
151 | #endif /* !1 */ | |
152 | ||
153 | #if defined (USG) && defined (TIOCGWINSZ) && !defined (Linux) | |
9e9cf21f MM |
154 | # if defined (_AIX) |
155 | /* AIX 4.x seems to reference struct uio within a prototype | |
156 | in stream.h, but doesn't cause the uio include file to | |
157 | be included. */ | |
158 | # include <sys/uio.h> | |
159 | # endif | |
5e98bbab PB |
160 | # include <sys/stream.h> |
161 | # if defined (HAVE_SYS_PTEM_H) | |
162 | # include <sys/ptem.h> | |
163 | # endif /* HAVE_SYS_PTEM_H */ | |
164 | # if defined (HAVE_SYS_PTE_H) | |
165 | # include <sys/pte.h> | |
166 | # endif /* HAVE_SYS_PTE_H */ | |
167 | #endif /* USG && TIOCGWINSZ && !Linux */ | |
168 | ||
169 | /* Posix macro to check file in statbuf for directory-ness. | |
170 | This requires that <sys/stat.h> be included before this test. */ | |
171 | #if defined (S_IFDIR) && !defined (S_ISDIR) | |
172 | #define S_ISDIR(m) (((m)&S_IFMT) == S_IFDIR) | |
173 | #endif | |
9e9cf21f MM |
174 | /* Posix macro to check file in statbuf for file-ness. |
175 | This requires that <sys/stat.h> be included before this test. */ | |
176 | #if defined (S_IFREG) && !defined (S_ISREG) | |
177 | #define S_ISREG(m) (((m)&S_IFMT) == S_IFREG) | |
178 | #endif | |
5e98bbab | 179 | |
5e98bbab PB |
180 | #if !defined (strchr) && !defined (__STDC__) |
181 | extern char *strchr (), *strrchr (); | |
182 | #endif /* !strchr && !__STDC__ */ | |
183 | ||
184 | #if defined (HAVE_VARARGS_H) | |
185 | # include <varargs.h> | |
186 | #endif /* HAVE_VARARGS_H */ | |
187 | ||
188 | /* This definition is needed by readline.c, rltty.c, and signals.c. */ | |
189 | /* If on, then readline handles signals in a way that doesn't screw. */ | |
190 | #define HANDLE_SIGNALS | |
191 | ||
9e9cf21f MM |
192 | #if defined(__WIN32__) || defined(__MSDOS__) |
193 | #undef HANDLE_SIGNALS | |
194 | #endif | |
195 | ||
196 | ||
5e98bbab PB |
197 | #if !defined (emacs_mode) |
198 | # define no_mode -1 | |
199 | # define vi_mode 0 | |
200 | # define emacs_mode 1 | |
201 | #endif | |
202 | ||
203 | /* Define some macros for dealing with assorted signalling disciplines. | |
204 | ||
205 | These macros provide a way to use signal blocking and disabling | |
206 | without smothering your code in a pile of #ifdef's. | |
207 | ||
208 | SIGNALS_UNBLOCK; Stop blocking all signals. | |
209 | ||
210 | { | |
211 | SIGNALS_DECLARE_SAVED (name); Declare a variable to save the | |
212 | signal blocking state. | |
213 | ... | |
214 | SIGNALS_BLOCK (SIGSTOP, name); Block a signal, and save the previous | |
215 | state for restoration later. | |
216 | ... | |
217 | SIGNALS_RESTORE (name); Restore previous signals. | |
218 | } | |
219 | ||
220 | */ | |
221 | ||
222 | #ifdef HAVE_POSIX_SIGNALS | |
223 | /* POSIX signals */ | |
224 | ||
225 | #define SIGNALS_UNBLOCK \ | |
226 | do { sigset_t set; \ | |
227 | sigemptyset (&set); \ | |
228 | sigprocmask (SIG_SETMASK, &set, (sigset_t *)NULL); \ | |
229 | } while (0) | |
230 | ||
231 | #define SIGNALS_DECLARE_SAVED(name) sigset_t name | |
232 | ||
233 | #define SIGNALS_BLOCK(SIG, saved) \ | |
234 | do { sigset_t set; \ | |
235 | sigemptyset (&set); \ | |
236 | sigaddset (&set, SIG); \ | |
237 | sigprocmask (SIG_BLOCK, &set, &saved); \ | |
238 | } while (0) | |
239 | ||
240 | #define SIGNALS_RESTORE(saved) \ | |
241 | sigprocmask (SIG_SETMASK, &saved, (sigset_t *)NULL) | |
242 | ||
243 | ||
244 | #else /* HAVE_POSIX_SIGNALS */ | |
245 | #ifdef HAVE_BSD_SIGNALS | |
246 | /* BSD signals */ | |
247 | ||
248 | #define SIGNALS_UNBLOCK sigsetmask (0) | |
249 | #define SIGNALS_DECLARE_SAVED(name) int name | |
250 | #define SIGNALS_BLOCK(SIG, saved) saved = sigblock (sigmask (SIG)) | |
251 | #define SIGNALS_RESTORE(saved) sigsetmask (saved) | |
252 | ||
253 | ||
254 | #else /* HAVE_BSD_SIGNALS */ | |
255 | /* None of the Above */ | |
256 | ||
257 | #define SIGNALS_UNBLOCK /* nothing */ | |
258 | #define SIGNALS_DECLARE_SAVED(name) /* nothing */ | |
259 | #define SIGNALS_BLOCK(SIG, saved) /* nothing */ | |
260 | #define SIGNALS_RESTORE(saved) /* nothing */ | |
261 | ||
262 | ||
263 | #endif /* HAVE_BSD_SIGNALS */ | |
264 | #endif /* HAVE_POSIX_SIGNALS */ | |
265 | ||
9e9cf21f MM |
266 | #if !defined (strchr) |
267 | extern char *strchr (); | |
268 | #endif | |
269 | #if !defined (strrchr) | |
270 | extern char *strrchr (); | |
271 | #endif | |
272 | #ifdef __STDC__ | |
273 | #include <stddef.h> | |
274 | extern size_t strlen (const char *s); | |
275 | #endif /* __STDC__ */ | |
276 | ||
5e98bbab PB |
277 | /* End of signal handling definitions. */ |
278 | #endif /* !_RLDEFS_H */ |