css 0.0.22

// This file is part of css. It is subject to the license terms in the COPYRIGHT file found in the top-level directory of this distribution and at https://raw.githubusercontent.com/lemonrock/css/master/COPYRIGHT. No part of predicator, including this file, may be copied, modified, propagated, or distributed except according to the terms contained in the COPYRIGHT file.
// Copyright © 2017 The developers of css. See the COPYRIGHT file in the top-level directory of this distribution and at https://raw.githubusercontent.com/lemonrock/css/master/COPYRIGHT.


/// Does not handle ErrorKind::Interrupted, so only suitable for blocking IO.
struct BlockingIoOnlyStdFmtWriteToStdIoWriteAdaptor<W: ::std::io::Write>(W);

impl<W: ::std::io::Write> ::std::fmt::Write for BlockingIoOnlyStdFmtWriteToStdIoWriteAdaptor<W>
{
	#[inline(always)]
	fn write_str(&mut self, s: &str) -> Result<(), ::std::fmt::Error>
	{
		self.write_all(s.as_bytes())
	}
	
	#[inline(always)]
	fn write_char(&mut self, c: char) -> Result<(), ::std::fmt::Error>
	{
		let mut buffer: [u8; 4] = unsafe { uninitialized() };
		c.encode_utf8(&mut buffer);
		
		self.write_all(&buffer[0 .. c.len_utf8()])
	}
	
	#[inline(always)]
	fn write_fmt(&mut self, args: ::std::fmt::Arguments) -> Result<(), ::std::fmt::Error>
	{
		Self::handle_io_error(self.0.write_fmt(args))
	}
}

impl<W: ::std::io::Write> BlockingIoOnlyStdFmtWriteToStdIoWriteAdaptor<W>
{
	#[inline(always)]
	fn write_all(&mut self, bytes: &[u8]) -> Result<(), ::std::fmt::Error>
	{
		Self::handle_io_error(self.0.write_all(bytes))
	}
	
	#[inline(always)]
	fn handle_io_error<R>(result: Result<R, ::std::io::Error>) -> Result<(), ::std::fmt::Error>
	{
		if result.is_err()
		{
			Err(::std::fmt::Error)
		}
		else
		{
			Ok(())
		}
	}
}