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fgetws: získejte ze streamu řetězec se širokými znaky

Originální popis anglicky: fgetws - get a wide-character string from a stream

Návod, kniha: POSIX Programmer's Manual

STRUČNĚ

#include <stdio.h>
 
#include <wchar.h>
 
 
wchar_t *fgetws(wchar_t *restrict ws, int n,
 
       FILE *restrict stream );
 

POPIS / INSTRUKCE

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().

NÁVRATOVÁ HODNOTA

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.

CHYBY / ERRORY

Refer to fgetwc() .
The following sections are informative.

PŘÍKLADY POUŽITÍ

None.

APPLICATION USAGE

None.

RATIONALE

None.

FUTURE DIRECTIONS

None.

SOUVISEJÍCÍ

fopen() , fread() , the Base Definitions volume of IEEE Std 1003.1-2001, <stdio.h>, <wchar.h> 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 .
2003 IEEE/The Open Group
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