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instance method

StringIO#external_encoding

strio.external_encoding => encoding

ext/stringio/stringio.c View on GitHub ↗

static VALUE
strio_external_encoding(VALUE self)
{
    struct StringIO *ptr = StringIO(self);
    return rb_enc_from_encoding(get_enc(ptr));
}

Returns the Encoding object that represents the encoding of the file. If the stream is write mode and no encoding is specified, returns nil.

See also #eof? #fcntl #eof #fileno also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.0