fgetws(3) - NetBSD Manual Pages

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FGETWS(3)               NetBSD Library Functions Manual              FGETWS(3)


NAME

     fgetws -- get a line of wide characters from a stream


LIBRARY

     Standard C Library (libc, -lc)


SYNOPSIS

     #include <stdio.h>
     #include <wchar.h>

     wchar_t *
     fgetws(wchar_t * restrict ws, int n, FILE * restrict fp);


DESCRIPTION

     The fgetws() function reads at most one less than the number of charac-
     ters specified by n from the given fp and stores them in the wide-charac-
     ter string ws.  Reading stops when a newline character is found, at end-
     of-file or error.  The newline, if any, is retained.  If any characters
     are read and there is no error, a `\0' character is appended to end the
     string.


RETURN VALUES

     Upon successful completion, fgetws() returns ws.  If end-of-file occurs
     before any characters are read, fgetws() returns NULL and the buffer con-
     tents remain unchanged.  If an error occurs, fgetws() returns NULL and
     the buffer contents are indeterminate.  The fgetws() function does not
     distinguish between end-of-file and error, and callers must use feof(3)
     and ferror(3) to determine which occurred.


ERRORS

     [EBADF]            The given fp argument is not a readable stream.

     [EILSEQ]           The data obtained from the input stream does not form
                        a valid multibyte character.

     The function fgetws() may also fail and set errno for any of the errors
     specified for the routines fflush(3), fstat(2), read(2), or malloc(3).


SEE ALSO

     feof(3), ferror(3), fgets(3)


STANDARDS

     The fgetws() function conforms to IEEE Std 1003.1-2001 (``POSIX.1'').

NetBSD 9.3                      August 6, 2002                      NetBSD 9.3