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make file like implement the std::io traits instead and wrap zbox file

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This commit is contained in:
Mackenzie Clark
2019-03-28 12:50:37 -07:00
parent 09642c92db
commit d9c693a31c
4 changed files with 89 additions and 46 deletions
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73
lib/runtime-abi/src/vfs/device_file.rs
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@ -1,7 +1,6 @@
use crate::vfs::file_like::{FileLike, Metadata};
use failure::Error;
use std::io;
use std::io::{Seek, Write};
pub struct Stdin;
pub struct Stdout;
@ -12,19 +11,27 @@ impl FileLike for Stdin {
unimplemented!()
}
fn write_file(&mut self, _buf: &[u8], _offset: usize) -> Result<usize, io::Error> {
unimplemented!()
}
fn read_file(&mut self, _buf: &mut [u8], _offset: usize) -> Result<usize, io::Error> {
unimplemented!()
}
fn set_file_len(&mut self, _len: usize) -> Result<(), failure::Error> {
panic!("Cannot set length of stdin");
}
}
impl io::Read for Stdin {
fn read(&mut self, _buf: &mut [u8]) -> Result<usize, io::Error> {
unimplemented!()
}
}
impl io::Write for Stdin {
fn write(&mut self, _buf: &[u8]) -> Result<usize, io::Error> {
unimplemented!()
}
fn flush(&mut self) -> Result<(), io::Error> {
unimplemented!()
}
}
impl io::Seek for Stdin {
fn seek(&mut self, _pos: io::SeekFrom) -> Result<u64, io::Error> {
unimplemented!()
@ -36,18 +43,28 @@ impl FileLike for Stdout {
unimplemented!()
}
fn write_file(&mut self, buf: &[u8], _offset: usize) -> Result<usize, io::Error> {
fn set_file_len(&mut self, _len: usize) -> Result<(), failure::Error> {
panic!("Cannot set length of stdout");
}
}
impl io::Read for Stdout {
fn read(&mut self, _buf: &mut [u8]) -> Result<usize, io::Error> {
unimplemented!()
}
}
impl io::Write for Stdout {
fn write(&mut self, buf: &[u8]) -> Result<usize, io::Error> {
let stdout = io::stdout();
let mut handle = stdout.lock();
handle.write(buf)
}
fn read_file(&mut self, _buf: &mut [u8], _offset: usize) -> Result<usize, io::Error> {
unimplemented!()
}
fn set_file_len(&mut self, _len: usize) -> Result<(), failure::Error> {
panic!("Cannot set length of stdout");
fn flush(&mut self) -> Result<(), io::Error> {
let stdout = io::stdout();
let mut handle = stdout.lock();
handle.flush()
}
}
@ -62,18 +79,28 @@ impl FileLike for Stderr {
unimplemented!()
}
fn write_file(&mut self, buf: &[u8], _offset: usize) -> Result<usize, io::Error> {
fn set_file_len(&mut self, _len: usize) -> Result<(), failure::Error> {
panic!("Cannot set length of stderr");
}
}
impl io::Read for Stderr {
fn read(&mut self, _buf: &mut [u8]) -> Result<usize, io::Error> {
unimplemented!()
}
}
impl io::Write for Stderr {
fn write(&mut self, buf: &[u8]) -> Result<usize, io::Error> {
let stderr = io::stderr();
let mut handle = stderr.lock();
handle.write(buf)
}
fn read_file(&mut self, _buf: &mut [u8], _offset: usize) -> Result<usize, io::Error> {
unimplemented!()
}
fn set_file_len(&mut self, _len: usize) -> Result<(), failure::Error> {
panic!("Cannot set length of stderr");
fn flush(&mut self) -> Result<(), io::Error> {
let stderr = io::stderr();
let mut handle = stderr.lock();
handle.flush()
}
}