96 lines
2.2 KiB
Rust
96 lines
2.2 KiB
Rust
// Copyright 2015-2017 Parity Technologies (UK) Ltd.
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// This file is part of Parity.
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// Parity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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use std::io::*;
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use std::cmp;
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pub struct TestSocket {
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pub read_buffer: Vec<u8>,
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pub write_buffer: Vec<u8>,
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pub cursor: usize,
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pub buf_size: usize,
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}
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impl Default for TestSocket {
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fn default() -> Self {
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TestSocket::new()
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}
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}
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impl TestSocket {
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pub fn new() -> Self {
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TestSocket {
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read_buffer: vec![],
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write_buffer: vec![],
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cursor: 0,
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buf_size: 0,
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}
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}
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pub fn new_buf(buf_size: usize) -> TestSocket {
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TestSocket {
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read_buffer: vec![],
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write_buffer: vec![],
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cursor: 0,
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buf_size: buf_size,
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}
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}
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pub fn new_ready(data: Vec<u8>) -> TestSocket {
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TestSocket {
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read_buffer: data,
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write_buffer: vec![],
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cursor: 0,
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buf_size: 0,
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}
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}
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}
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impl Read for TestSocket {
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fn read(&mut self, buf: &mut [u8]) -> Result<usize> {
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let end_position = cmp::min(self.read_buffer.len(), self.cursor+buf.len());
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if self.cursor > end_position { return Ok(0) }
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let len = cmp::max(end_position - self.cursor, 0);
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match len {
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0 => Ok(0),
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_ => {
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for i in self.cursor..end_position {
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buf[i-self.cursor] = self.read_buffer[i];
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}
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self.cursor = end_position;
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Ok(len)
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}
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}
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}
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}
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impl Write for TestSocket {
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fn write(&mut self, buf: &[u8]) -> Result<usize> {
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if self.buf_size == 0 || buf.len() < self.buf_size {
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self.write_buffer.extend(buf.iter().cloned());
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Ok(buf.len())
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}
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else {
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self.write_buffer.extend(buf.iter().take(self.buf_size).cloned());
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Ok(self.buf_size)
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}
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}
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fn flush(&mut self) -> Result<()> {
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unimplemented!();
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}
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}
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