HCoop / bpt / guile.git / blame
| Commit | Line | Data |
|---|---|---|
| 3d458a81 | 1 | /* Binary mode I/O. |
| f0007cad | 2 | Copyright (C) 2001, 2003, 2005, 2008-2012 Free Software Foundation, Inc. |
| 3d458a81 AW |
3 | |
| 4 | This program is free software: you can redistribute it and/or modify | |
| 5 | it under the terms of the GNU Lesser General Public License as published by | |
| 6 | the Free Software Foundation; either version 3 of the License, or | |
| 7 | (at your option) any later version. | |
| 8 | ||
| 9 | This program is distributed in the hope that it will be useful, | |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 | GNU Lesser General Public License for more details. | |
| 13 | ||
| 14 | You should have received a copy of the GNU Lesser General Public License | |
| 15 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
| 16 | ||
| 17 | #ifndef _BINARY_H | |
| 18 | #define _BINARY_H | |
| 19 | ||
| 20 | /* For systems that distinguish between text and binary I/O. | |
| 21 | O_BINARY is guaranteed by the gnulib <fcntl.h>. */ | |
| 22 | #include <fcntl.h> | |
| 23 | ||
| 24 | /* The MSVC7 <stdio.h> doesn't like to be included after '#define fileno ...', | |
| 25 | so we include it here first. */ | |
| 26 | #include <stdio.h> | |
| 27 | ||
| 005de2e8 LC |
28 | /* set_binary_mode (fd, mode) |
| 29 | sets the binary/text I/O mode of file descriptor fd to the given mode | |
| 30 | (must be O_BINARY or O_TEXT) and returns the previous mode. */ | |
| 3d458a81 AW |
31 | #if O_BINARY |
| 32 | # if defined __EMX__ || defined __DJGPP__ || defined __CYGWIN__ | |
| 33 | # include <io.h> /* declares setmode() */ | |
| 005de2e8 | 34 | # define set_binary_mode setmode |
| 3d458a81 | 35 | # else |
| 005de2e8 | 36 | # define set_binary_mode _setmode |
| 3d458a81 AW |
37 | # undef fileno |
| 38 | # define fileno _fileno | |
| 39 | # endif | |
| 3d458a81 | 40 | #else |
| 005de2e8 LC |
41 | /* On reasonable systems, binary I/O is the only choice. */ |
| 42 | /* Use an inline function rather than a macro, to avoid gcc warnings | |
| 43 | "warning: statement with no effect". */ | |
| 44 | static inline int | |
| 45 | set_binary_mode (int fd, int mode) | |
| 46 | { | |
| 47 | (void) fd; | |
| 48 | (void) mode; | |
| 49 | return O_BINARY; | |
| 50 | } | |
| 51 | #endif | |
| 52 | ||
| 53 | /* SET_BINARY (fd); | |
| 54 | changes the file descriptor fd to perform binary I/O. */ | |
| 55 | #ifdef __DJGPP__ | |
| 56 | # include <unistd.h> /* declares isatty() */ | |
| 57 | /* Avoid putting stdin/stdout in binary mode if it is connected to | |
| 58 | the console, because that would make it impossible for the user | |
| 59 | to interrupt the program through Ctrl-C or Ctrl-Break. */ | |
| 60 | # define SET_BINARY(fd) ((void) (!isatty (fd) ? (set_binary_mode (fd, O_BINARY), 0) : 0)) | |
| 61 | #else | |
| 62 | # define SET_BINARY(fd) ((void) set_binary_mode (fd, O_BINARY)) | |
| 3d458a81 AW |
63 | #endif |
| 64 | ||
| 65 | #endif /* _BINARY_H */ |