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FGETWS

FGETWS

Section: POSIX Programmer's Manual (P) Updated: 2003
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NAME

fgetws - get a wide-character string from a stream  

SYNOPSIS

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

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

DESCRIPTION

The fgetws() function shall read characters from the stream, convert these to the corresponding wide-character codes, place them in the wchar_t array pointed to by ws, until n-1 characters are read, or a <newline> is read, converted, and transferred to ws, or an end-of-file condition is encountered. The wide-character string, ws, shall then be terminated with a null wide-character code.

If an error occurs, the resulting value of the file position indicator for the stream is unspecified.

The fgetws() function may mark the st_atime field of the file associated with stream for update. The st_atime field shall be marked for update by the first successful execution of fgetc(), fgets(), fgetwc(), fgetws(), fread(), fscanf(), getc(), getchar(), gets(), or scanf() using stream that returns data not supplied by a prior call to ungetc() or ungetwc().  

RETURN VALUE

Upon successful completion, fgetws() shall return ws. If the stream is at end-of-file, the end-of-file indicator for the stream shall be set and fgetws() shall return a null pointer. If a read error occurs, the error indicator for the stream shall be set, fgetws() shall return a null pointer,  and shall set errno to indicate the error.  

ERRORS

Refer to fgetwc() .

The following sections are informative.  

EXAMPLES

None.  

APPLICATION USAGE

None.  

RATIONALE

None.  

FUTURE DIRECTIONS

None.  

SEE ALSO

fopen() , fread() , the Base Definitions volume of IEEE Std 1003.1-2001, <stdio.h>, <wchar.h>  

COPYRIGHT

Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html .


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
EXAMPLES
APPLICATION USAGE
RATIONALE
FUTURE DIRECTIONS
SEE ALSO
COPYRIGHT

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Time: 21:46:05 GMT, April 16, 2011