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Diffstat (limited to '')
-rw-r--r-- | lib/binary-io.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/lib/binary-io.c b/lib/binary-io.c new file mode 100644 index 0000000..28a9e6e --- /dev/null +++ b/lib/binary-io.c @@ -0,0 +1,39 @@ +/* Binary mode I/O. + Copyright 2017-2023 Free Software Foundation, Inc. + + This file is free software: you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + This file is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with this program. If not, see <https://www.gnu.org/licenses/>. */ + +#include <config.h> + +#define BINARY_IO_INLINE _GL_EXTERN_INLINE +#include "binary-io.h" + +#if defined __DJGPP__ || defined __EMX__ +# include <unistd.h> + +int +set_binary_mode (int fd, int mode) +{ + if (isatty (fd)) + /* If FD refers to a console (not a pipe, not a regular file), + O_TEXT is the only reasonable mode, both on input and on output. + Silently ignore the request. If we were to return -1 here, + all programs that use xset_binary_mode would fail when run + with console input or console output. */ + return O_TEXT; + else + return __gl_setmode (fd, mode); +} + +#endif |