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// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use error::Error as StdError;
use ffi::{OsString, OsStr};
use fmt;
use io;
use path::{self, PathBuf};
use str;
use sys::{unsupported, Void, ExitSysCall, GetEnvSysCall, SetEnvSysCall};
pub fn errno() -> i32 {
0
}
pub fn error_string(_errno: i32) -> String {
format!("operation successful")
}
pub fn getcwd() -> io::Result<PathBuf> {
unsupported()
}
pub fn chdir(_: &path::Path) -> io::Result<()> {
unsupported()
}
pub struct SplitPaths<'a>(&'a Void);
pub fn split_paths(_unparsed: &OsStr) -> SplitPaths {
panic!("unsupported")
}
impl<'a> Iterator for SplitPaths<'a> {
type Item = PathBuf;
fn next(&mut self) -> Option<PathBuf> {
match *self.0 {}
}
}
#[derive(Debug)]
pub struct JoinPathsError;
pub fn join_paths<I, T>(_paths: I) -> Result<OsString, JoinPathsError>
where I: Iterator<Item=T>, T: AsRef<OsStr>
{
Err(JoinPathsError)
}
impl fmt::Display for JoinPathsError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
"not supported on wasm yet".fmt(f)
}
}
impl StdError for JoinPathsError {
fn description(&self) -> &str {
"not supported on wasm yet"
}
}
pub fn current_exe() -> io::Result<PathBuf> {
unsupported()
}
pub struct Env(Void);
impl Iterator for Env {
type Item = (OsString, OsString);
fn next(&mut self) -> Option<(OsString, OsString)> {
match self.0 {}
}
}
pub fn env() -> Env {
panic!("not supported on web assembly")
}
pub fn getenv(k: &OsStr) -> io::Result<Option<OsString>> {
Ok(GetEnvSysCall::perform(k))
}
pub fn setenv(k: &OsStr, v: &OsStr) -> io::Result<()> {
Ok(SetEnvSysCall::perform(k, Some(v)))
}
pub fn unsetenv(k: &OsStr) -> io::Result<()> {
Ok(SetEnvSysCall::perform(k, None))
}
pub fn temp_dir() -> PathBuf {
panic!("no filesystem on wasm")
}
pub fn home_dir() -> Option<PathBuf> {
None
}
pub fn exit(_code: i32) -> ! {
ExitSysCall::perform(_code as isize as usize)
}
pub fn getpid() -> u32 {
panic!("no pids on wasm")
}
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