diff options
Diffstat (limited to 'REORG.TODO/libio/iogets.c')
-rw-r--r-- | REORG.TODO/libio/iogets.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/REORG.TODO/libio/iogets.c b/REORG.TODO/libio/iogets.c new file mode 100644 index 0000000000..432cecb75c --- /dev/null +++ b/REORG.TODO/libio/iogets.c @@ -0,0 +1,76 @@ +/* Copyright (C) 1993-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library 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. + + The GNU C Library 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 the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. + + As a special exception, if you link the code in this file with + files compiled with a GNU compiler to produce an executable, + that does not cause the resulting executable to be covered by + the GNU Lesser General Public License. This exception does not + however invalidate any other reasons why the executable file + might be covered by the GNU Lesser General Public License. + This exception applies to code released by its copyright holders + in files containing the exception. */ + +#include "libioP.h" +#include <limits.h> + +char * +_IO_gets (char *buf) +{ + _IO_size_t count; + int ch; + char *retval; + + _IO_acquire_lock (_IO_stdin); + ch = _IO_getc_unlocked (_IO_stdin); + if (ch == EOF) + { + retval = NULL; + goto unlock_return; + } + if (ch == '\n') + count = 0; + else + { + /* This is very tricky since a file descriptor may be in the + non-blocking mode. The error flag doesn't mean much in this + case. We return an error only when there is a new error. */ + int old_error = _IO_stdin->_IO_file_flags & _IO_ERR_SEEN; + _IO_stdin->_IO_file_flags &= ~_IO_ERR_SEEN; + buf[0] = (char) ch; + count = _IO_getline (_IO_stdin, buf + 1, INT_MAX, '\n', 0) + 1; + if (_IO_stdin->_IO_file_flags & _IO_ERR_SEEN) + { + retval = NULL; + goto unlock_return; + } + else + _IO_stdin->_IO_file_flags |= old_error; + } + buf[count] = 0; + retval = buf; +unlock_return: + _IO_release_lock (_IO_stdin); + return retval; +} + +#ifdef weak_alias +weak_alias (_IO_gets, gets) +#endif + +#ifdef _LIBC +link_warning (gets, "the `gets' function is dangerous and should not be used.") +#endif |