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FGETWLN(3)	       FreeBSD Library Functions Manual		    FGETWLN(3)

NAME
     fgetln -- get a line of wide characters from a stream

LIBRARY
     Standard C	Library	(libc, -lc)

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

     wchar_t *
     fgetwln(FILE * restrict stream, size_t * restrict len);

DESCRIPTION
     The fgetwln() function returns a pointer to the next line from the	stream
     referenced	by stream.  This line is not a standard	wide character string
     as	it does	not end	with a terminating null	wide character.	 The length of
     the line, including the final newline, is stored in the memory location
     to	which len points.  (Note, however, that	if the line is the last	in a
     file that does not	end in a newline, the returned text will not contain a
     newline.)

RETURN VALUES
     Upon successful completion	a pointer is returned; this pointer becomes
     invalid after the next I/O	operation on stream (whether successful	or
     not) or as	soon as	the stream is closed.  Otherwise, NULL is returned.
     The fgetwln() function does not distinguish between end-of-file and
     error; the	routines feof(3) and ferror(3) must be used to determine which
     occurred.	If an error occurs, the	global variable	errno is set to	indi-
     cate the error.  The end-of-file condition	is remembered, even on a ter-
     minal, and	all subsequent attempts	to read	will return NULL until the
     condition is cleared with clearerr(3).

     The text to which the returned pointer points may be modified, provided
     that no changes are made beyond the returned size.	 These changes are
     lost as soon as the pointer becomes invalid.

ERRORS
     [EBADF]		The argument stream is not a stream open for reading.

     The fgetwln() function may	also fail and set errno	for any	of the errors
     specified for the routines	mbrtowc(3), realloc(3),	or read(2).

SEE ALSO
     ferror(3),	fgetln(3), fgetws(3), fopen(3)

FreeBSD	10.1			 July 16, 2004			  FreeBSD 10.1

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | SEE ALSO

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