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srfi.238
- CodesetsThis module provides a unified interface for system-defined set of code values, such as errno or signal numbers.
In Gauche, we have predefined integer constants for errnos (e.g. EINTR
)
and signals (e.g. SIGINT
) in gauche
module, and
we have built-in procedures to convert integer code to
symbols (sys-errno->symbol
, sys-signal-name
)
and to string messages (sys-strerror
, sys-strsignal
).
You may want to use this srfi for portable code, though.
[SRFI-238]{srfi.238}
Returns #t
if obj is an object that can be used as a codeset
argument for this srfi’s API, #f
otherwise.
In Gauche, obj must be either a symbol errno
or signal
.
[SRFI-238]{srfi.238} Returns a list of symbols defined in a codeset designated by codeset. In Gauche, codeset must be a symbol. If it does not name a supported codeset, an empty list is returned.
(codeset-symbols 'errno) ⇒ (EPERM ENOENT ESRCH EINTR EIO ...)
[SRFI-238]{srfi.238} Returns a symbol, an exact integer, or a message string associated to the code in the codeset designated by codeset, respectively
The code argument can be either a symbol or an exact integer. The codeset argument must be a symbol.
If codeset is not a name of supported codesets (in Gauche,
we have errno
and signale
), or code is not in
the specified codeset, #f
is returned.
(codeset-symbol 'errno 'EINTR) ⇒ EINTR (codeset-symbol 'errno EINTR) ⇒ EINTR ; Gauche has predefined constant (codeset-number 'errno 'EINTR) ⇒ 4 ; Actual number is platform dependent (codeset-number 'errno 4) ⇒ 4 (codeset-message 'errno EINTR) ⇒ "Interrupted system call" (codeset-message 'errno 'NoSuchErrno) ⇒ #f
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