прочитать сообщение программы (read a program message)
Пролог (Prolog)
This manual page is part of the POSIX Programmer's Manual. The
Linux implementation of this interface may differ (consult the
corresponding Linux manual page for details of Linux behavior),
or the interface may not be implemented on Linux.
Имя (Name)
catgets — read a program message
Синопсис (Synopsis)
#include <nl_types.h>
char *catgets(nl_catd catd, int set_id, int msg_id, const char *s);
Описание (Description)
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 results are undefined if catd is
not a value returned by catopen() for a message catalog still
open in the process. 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 thread-safe.
Возвращаемое значение (Return value)
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 shall be set to
indicate the error.
Ошибки (Error)
The catgets() function shall fail if:
EINTR The read operation was terminated due to the receipt of a
signal, and no data was transferred.
ENOMSG The message identified by set_id and msg_id is not in the
message catalog.
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.
EINVAL The message catalog identified by catd is corrupted.
The following sections are informative.
Примеры (Examples)
None.
Использование в приложениях (Application usage)
None.
Обоснование (Rationale)
None.
Будущие направления (Future directions)
None.
Смотри также (See also)
catclose(3p), catopen(3p)
The Base Definitions volume of POSIX.1‐2017, nl_types.h(0p)
