Method raw_write

crates/c-api/src/wasi.rs:176–184

(&self, buf: &[u8])

impl CustomOutputStreamInner {
    pub fn raw_write(&self, buf: &[u8]) -> io::Result<usize> {
        let wrote = (self.callback)(self.foreign_data.data, buf.as_ptr(), buf.len());

        if wrote >= 0 {
            Ok(wrote as _)
        } else {
            Err(io::Error::from_raw_os_error(wrote.abs() as _))
        }
    }
}

#[derive(Clone)]