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use std::fmt::Debug;
use std::io::Write;
pub enum OutputProxy {
Out(::std::io::Stdout),
Err(::std::io::Stderr),
Sink,
}
impl Write for OutputProxy {
fn write(&mut self, buf: &[u8]) -> ::std::io::Result<usize> {
match *self {
OutputProxy::Out(ref mut r) => r.write(buf),
OutputProxy::Err(ref mut r) => r.write(buf),
OutputProxy::Sink => Ok(0),
}
}
fn flush(&mut self) -> ::std::io::Result<()> {
match *self {
OutputProxy::Out(ref mut r) => r.flush(),
OutputProxy::Err(ref mut r) => r.flush(),
OutputProxy::Sink => Ok(()),
}
}
}
impl Debug for OutputProxy {
fn fmt(&self, f: &mut ::std::fmt::Formatter) -> Result<(), ::std::fmt::Error> {
match *self {
OutputProxy::Out(..) => write!(f, "OutputProxy(Stdout)"),
OutputProxy::Err(..) => write!(f, "OutputProxy(Stderr)"),
OutputProxy::Sink => write!(f, "OutputProxy(Sink)"),
}
}
}
impl OutputProxy {
pub fn lock(&self) -> LockedOutputProxy {
match *self {
OutputProxy::Out(ref r) => LockedOutputProxy::Out(r.lock()),
OutputProxy::Err(ref r) => LockedOutputProxy::Err(r.lock()),
OutputProxy::Sink => LockedOutputProxy::Sink,
}
}
}
pub enum LockedOutputProxy<'a> {
Out(::std::io::StdoutLock<'a>),
Err(::std::io::StderrLock<'a>),
Sink,
}
impl<'a> Write for LockedOutputProxy<'a> {
fn write(&mut self, buf: &[u8]) -> ::std::io::Result<usize> {
match *self {
LockedOutputProxy::Out(ref mut r) => r.write(buf),
LockedOutputProxy::Err(ref mut r) => r.write(buf),
LockedOutputProxy::Sink => Ok(0),
}
}
fn flush(&mut self) -> ::std::io::Result<()> {
match *self {
LockedOutputProxy::Out(ref mut r) => r.flush(),
LockedOutputProxy::Err(ref mut r) => r.flush(),
LockedOutputProxy::Sink => Ok(()),
}
}
}
impl<'a> Debug for LockedOutputProxy<'a> {
fn fmt(&self, f: &mut ::std::fmt::Formatter) -> Result<(), ::std::fmt::Error> {
match *self {
LockedOutputProxy::Out(..) => write!(f, "LockedOutputProxy(Stdout)"),
LockedOutputProxy::Err(..) => write!(f, "LockedOutputProxy(Stderr)"),
LockedOutputProxy::Sink => write!(f, "LockedOutputProxy(Sink)"),
}
}
}