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Manuál Linux
[Linux manuál]

catgets: číst zprávu programu

Originální popis anglicky: catgets - read a program message

Návod, kniha: POSIX Programmer's Manual

STRUČNĚ

#include <nl_types.h>
 
 
char *catgets(nl_catd catd, int set_id , int msg_id , const char *s);
 

POPIS / INSTRUKCE

The catgets() function shall attempt to read message msg_id, in set set_id, from the message catalog identified by catd. The catd argument is a message catalog descriptor returned from an earlier call to catopen(). The s argument points to a default message string which shall be returned by catgets() if it cannot retrieve the identified message.
The catgets() function need not be reentrant. A function that is not required to be reentrant is not required to be thread-safe.

NÁVRATOVÁ HODNOTA

If the identified message is retrieved successfully, catgets() shall return a pointer to an internal buffer area containing the null-terminated message string. If the call is unsuccessful for any reason, s shall be returned and errno may be set to indicate the error.

CHYBY / ERRORY

The catgets() function may fail if:
EBADF
The catd argument is not a valid message catalog descriptor open for reading.
EBADMSG
The message identified by set_id and msg_id in the specified message catalog did not satisfy implementation-defined security criteria.
EINTR
The read operation was terminated due to the receipt of a signal, and no data was transferred.
EINVAL
The message catalog identified by catd is corrupted.
ENOMSG
The message identified by set_id and msg_id is not in the message catalog.
 
The following sections are informative.

PŘÍKLADY POUŽITÍ

None.

APPLICATION USAGE

None.

RATIONALE

None.

FUTURE DIRECTIONS

None.

SOUVISEJÍCÍ

catclose() , catopen() , the Base Definitions volume of IEEE Std 1003.1-2001, <nl_types.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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