just/src/platform.rs
Casey Rodarmor 165e7951af Use cygpath to translate paths on windows (#188)
I was previous doing it manually, which failed when running in
powershell in a Github Desktop for windows.

Use the `cygpath` utility instead.
2017-04-23 16:09:34 -07:00

77 lines
2.4 KiB
Rust

use ::prelude::*;
pub struct Platform;
pub trait PlatformInterface {
/// Construct a command equivelant to running the script at `path` with the
/// shebang line `shebang`
fn make_shebang_command(path: &Path, command: &str, argument: Option<&str>)
-> Result<process::Command, super::OutputError>;
/// Set the execute permission on the file pointed to by `path`
fn set_execute_permission(path: &Path) -> Result<(), io::Error>;
/// Extract the signal from a process exit status, if it was terminated by a signal
fn signal_from_exit_status(exit_status: process::ExitStatus) -> Option<i32>;
}
#[cfg(unix)]
impl PlatformInterface for Platform {
fn make_shebang_command(path: &Path, _command: &str, _argument: Option<&str>)
-> Result<process::Command, super::OutputError>
{
// shebang scripts can be executed directly on unix
Ok(process::Command::new(path))
}
fn set_execute_permission(path: &Path) -> Result<(), io::Error> {
use std::os::unix::fs::PermissionsExt;
// get current permissions
let mut permissions = fs::metadata(&path)?.permissions();
// set the execute bit
let current_mode = permissions.mode();
permissions.set_mode(current_mode | 0o100);
// set the new permissions
fs::set_permissions(&path, permissions)
}
fn signal_from_exit_status(exit_status: process::ExitStatus) -> Option<i32> {
use std::os::unix::process::ExitStatusExt;
exit_status.signal()
}
}
#[cfg(windows)]
impl PlatformInterface for Platform {
fn make_shebang_command(path: &Path, command: &str, argument: Option<&str>)
-> Result<process::Command, super::OutputError>
{
// Translate path to the interpreter from unix style to windows style
let mut cygpath = process::Command::new("cygpath");
cygpath.arg("--windows");
cygpath.arg(command);
let mut cmd = process::Command::new(super::output(cygpath)?);
if let Some(argument) = argument {
cmd.arg(argument);
}
cmd.arg(path);
Ok(cmd)
}
fn set_execute_permission(_path: &Path) -> Result<(), io::Error> {
// it is not necessary to set an execute permission on a script on windows,
// so this is a nop
Ok(())
}
fn signal_from_exit_status(_exit_status: process::ExitStatus) -> Option<i32> {
// The rust standard library does not expose a way to extract a signal
// from a windows process exit status, so just return None
None
}
}