just/src/platform.rs
2021-05-18 03:44:12 +00:00

110 lines
3.0 KiB
Rust

use crate::common::*;
pub(crate) struct Platform;
#[cfg(unix)]
impl PlatformInterface for Platform {
fn make_shebang_command(
path: &Path,
working_directory: &Path,
_shebang: Shebang,
) -> Result<Command, OutputError> {
// shebang scripts can be executed directly on unix
let mut cmd = Command::new(path);
cmd.current_dir(working_directory);
Ok(cmd)
}
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()
}
fn convert_native_path(_working_directory: &Path, path: &Path) -> Result<String, String> {
path
.to_str()
.map(str::to_string)
.ok_or_else(|| String::from("Error getting current directory: unicode decode error"))
}
}
#[cfg(windows)]
impl PlatformInterface for Platform {
fn make_shebang_command(
path: &Path,
working_directory: &Path,
shebang: Shebang,
) -> Result<Command, OutputError> {
use std::borrow::Cow;
// If the path contains forward slashes…
let command = if shebang.interpreter.contains('/') {
// …translate path to the interpreter from unix style to windows style.
let mut cygpath = Command::new("cygpath");
cygpath.current_dir(working_directory);
cygpath.arg("--windows");
cygpath.arg(shebang.interpreter);
Cow::Owned(output(cygpath)?)
} else {
// …otherwise use it as-is.
Cow::Borrowed(shebang.interpreter)
};
let mut cmd = Command::new(command.as_ref());
cmd.current_dir(working_directory);
if let Some(argument) = shebang.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
}
fn convert_native_path(working_directory: &Path, path: &Path) -> Result<String, String> {
// Translate path from windows style to unix style
let mut cygpath = Command::new("cygpath");
cygpath.current_dir(working_directory);
cygpath.arg("--unix");
cygpath.arg(path);
match output(cygpath) {
Ok(shell_path) => Ok(shell_path),
Err(_) => path
.to_str()
.map(str::to_string)
.ok_or_else(|| String::from("Error getting current directory: unicode decode error")),
}
}
}