fgetpos: získat aktuální informace o poloze souboru

Originální popis anglicky: fgetpos - get current file position information

Návod, kniha: POSIX Programmer's Manual

STRUČNĚ

#include <stdio.h> int fgetpos(FILE *restrict stream, fpos_t *restrict pos);

POPIS / INSTRUKCE

The fgetpos() function shall store the current values of the parse state (if any) and file position indicator for the stream pointed to by stream in the object pointed to by pos. The value stored contains unspecified information usable by fsetpos() for repositioning the stream to its position at the time of the call to fgetpos().

NÁVRATOVÁ HODNOTA

Upon successful completion, fgetpos() shall return 0; otherwise, it shall return a non-zero value and set errno to indicate the error.

CHYBY / ERRORY

The fgetpos() function shall fail if:

EOVERFLOW

The current value of the file position cannot be represented correctly in an object of type fpos_t.

 

The fgetpos() function may fail if:

EBADF

The file descriptor underlying stream is not valid.

ESPIPE

The file descriptor underlying stream is associated with a pipe, FIFO, or socket.

 

The following sections are informative.

PŘÍKLADY POUŽITÍ

None.

APPLICATION USAGE

None.

RATIONALE

None.

FUTURE DIRECTIONS

None.

SOUVISEJÍCÍ

fopen() , ftell() , rewind() , ungetc() , the Base Definitions volume of IEEE Std 1003.1-2001, <stdio.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 .