fgetws(3) Library Functions Manual fgetws(3)
NAME
fgetws - read a wide-character string from a FILE stream
LIBRARY
Standard C library (libc, -lc)
SYNOPSIS
#include <wchar.h>
wchar_t *fgetws(wchar_t ws[restrict .n], int n, FILE *restrict stream);
DESCRIPTION
The fgetws() function is the wide-character equivalent of the fgets(3)
function. It reads a string of at most n-1 wide characters into the
wide-character array pointed to by ws, and adds a terminating null wide
character (L'\0'). It stops reading wide characters after it has en-
countered and stored a newline wide character. It also stops when end
of stream is reached.
The programmer must ensure that there is room for at least n wide char-
acters at ws.
For a nonlocking counterpart, see unlocked_stdio(3).
RETURN VALUE
The fgetws() function, if successful, returns ws. If end of stream was
already reached or if an error occurred, it returns NULL.
ATTRIBUTES
For an explanation of the terms used in this section, see attrib-
utes(7).
┌───────────────────────────────────────────┬───────────────┬─────────┐
│ Interface │ Attribute │ Value │
├───────────────────────────────────────────┼───────────────┼─────────┤
│ fgetws() │ Thread safety │ MT-Safe │
└───────────────────────────────────────────┴───────────────┴─────────┘
STANDARDS
C11, POSIX.1-2008.
HISTORY
POSIX.1-2001, C99.
NOTES
The behavior of fgetws() depends on the LC_CTYPE category of the cur-
rent locale.
In the absence of additional information passed to the fopen(3) call,
it is reasonable to expect that fgetws() will actually read a multibyte
string from the stream and then convert it to a wide-character string.
This function is unreliable, because it does not permit to deal prop-
erly with null wide characters that may be present in the input.
SEE ALSO
fgetwc(3), unlocked_stdio(3)
Linux man-pages 6.7 2023-10-31 fgetws(3)
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