method

external_encoding

Ruby latest stable (v2_5_5) - 0 notes - Class: IO

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external_encoding() public

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

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static VALUE
rb_io_external_encoding(VALUE io)
{
    rb_io_t *fptr;

    GetOpenFile(io, fptr);
    if (fptr->encs.enc2) {
        return rb_enc_from_encoding(fptr->encs.enc2);
    }
    if (fptr->mode & FMODE_WRITABLE) {
        if (fptr->encs.enc)
            return rb_enc_from_encoding(fptr->encs.enc);
        return Qnil;
    }
    return rb_enc_from_encoding(io_read_encoding(fptr));
}

external_encoding

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