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|
use process_control::{ChildExt, Control};
use std::ffi::OsStr;
use std::fmt::Debug;
use std::fs::read_to_string;
use std::io::{Error, ErrorKind, Result};
use std::path::{Path, PathBuf};
use std::process::{Command, Stdio};
use std::time::{Duration, Instant};
use crate::context::Shell;
/// Return the string contents of a file
pub fn read_file<P: AsRef<Path> + Debug>(file_name: P) -> Result<String> {
log::trace!("Trying to read from {:?}", file_name);
let result = read_to_string(file_name);
if result.is_err() {
log::debug!("Error reading file: {:?}", result);
} else {
log::trace!("File read successfully");
};
result
}
/// Reads command output from stderr or stdout depending on to which stream program streamed it's output
pub fn get_command_string_output(command: CommandOutput) -> String {
if command.stdout.is_empty() {
command.stderr
} else {
command.stdout
}
}
/// Attempt to resolve `binary_name` from and creates a new `Command` pointing at it
/// This allows executing cmd files on Windows and prevents running executable from cwd on Windows
/// This function also initialises std{err,out,in} to protect against processes changing the console mode
pub fn create_command<T: AsRef<OsStr>>(binary_name: T) -> Result<Command> {
let binary_name = binary_name.as_ref();
log::trace!("Creating Command for binary {:?}", binary_name);
let full_path = match which::which(binary_name) {
Ok(full_path) => {
log::trace!("Using {:?} as {:?}", full_path, binary_name);
full_path
}
Err(error) => {
log::trace!("Unable to find {:?} in PATH, {:?}", binary_name, error);
return Err(Error::new(ErrorKind::NotFound, error));
}
};
#[allow(clippy::disallowed_method)]
let mut cmd = Command::new(full_path);
cmd.stderr(Stdio::piped())
.stdout(Stdio::piped())
.stdin(Stdio::null());
Ok(cmd)
}
#[derive(Debug, Clone)]
pub struct CommandOutput {
pub stdout: String,
pub stderr: String,
}
impl PartialEq for CommandOutput {
fn eq(&self, other: &Self) -> bool {
self.stdout == other.stdout && self.stderr == other.stderr
}
}
#[cfg(test)]
pub fn display_command<T: AsRef<OsStr> + Debug, U: AsRef<OsStr> + Debug>(
cmd: T,
args: &[U],
) -> String {
std::iter::once(cmd.as_ref())
.chain(args.iter().map(|i| i.as_ref()))
.map(|i| i.to_string_lossy().into_owned())
.collect::<Vec<String>>()
.join(" ")
}
/// Execute a command and return the output on stdout and stderr if successful
pub fn exec_cmd<T: AsRef<OsStr> + Debug, U: AsRef<OsStr> + Debug>(
cmd: T,
args: &[U],
time_limit: Duration,
) -> Option<CommandOutput> {
log::trace!("Executing command {:?} with args {:?}", cmd, args);
#[cfg(test)]
if let Some(o) = mock_cmd(&cmd, args) {
return o;
}
internal_exec_cmd(cmd, args, time_limit)
}
#[cfg(test)]
pub fn mock_cmd<T: AsRef<OsStr> + Debug, U: AsRef<OsStr> + Debug>(
cmd: T,
args: &[U],
) -> Option<Option<CommandOutput>> {
let command = display_command(&cmd, args);
let out = match command.as_str() {
"cobc -version" => Some(CommandOutput {
stdout: String::from("\
cobc (GnuCOBOL) 3.1.2.0
Copyright (C) 2020 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Written by Keisuke Nishida, Roger While, Ron Norman, Simon Sobisch, Edward Hart
Built Dec 24 2020 19:08:58
Packaged Dec 23 2020 12:04:58 UTC
C version \"10.2.0\""),
stderr: String::default(),
}),
"crystal --version" => Some(CommandOutput {
stdout: String::from(
"\
Crystal 0.35.1 (2020-06-19)
LLVM: 10.0.0
Default target: x86_64-apple-macosx\n",
),
stderr: String::default(),
}),
"dart --version" => Some(CommandOutput {
stdout: String::default(),
stderr: String::from(
"Dart VM version: 2.8.4 (stable) (Wed Jun 3 12:26:04 2020 +0200) on \"macos_x64\"",
),
}),
"deno -V" => Some(CommandOutput {
stdout: String::from("deno 1.8.3\n"),
stderr: String::default()
}),
"dummy_command" => Some(CommandOutput {
stdout: String::from("stdout ok!\n"),
stderr: String::from("stderr ok!\n"),
}),
"elixir --version" => Some(CommandOutput {
stdout: String::from(
"\
Erlang/OTP 22 [erts-10.6.4] [source] [64-bit] [smp:8:8] [ds:8:8:10] [async-threads:1] [hipe]
Elixir 1.10 (compiled with Erlang/OTP 22)\n",
),
stderr: String::default(),
}),
"elm --version" => Some(CommandOutput {
stdout: String::from("0.19.1\n"),
stderr: String::default(),
}),
"go version" => Some(CommandOutput {
stdout: String::from("go version go1.12.1 linux/amd64\n"),
stderr: String::default(),
}),
"helm version --short --client" => Some(CommandOutput {
stdout: String::from("v3.1.1+gafe7058\n"),
stderr: String::default(),
}),
s if s.ends_with("java -Xinternalversion") => Some(CommandOutput {
stdout: String::from("OpenJDK 64-Bit Server VM (13.0.2+8) for bsd-amd64 JRE (13.0.2+8), built on Feb 6 2020 02:07:52 by \"brew\" with clang 4.2.1 Compatible Apple LLVM 11.0.0 (clang-1100.0.33.17)"),
stderr: String::default(),
}),
"scalac -version" => Some(CommandOutput {
stdout: String::from("Scala compiler version 2.13.5 -- Copyright 2002-2020, LAMP/EPFL and Lightbend, Inc."),
stderr: String::default(),
}),
"julia --version" => Some(CommandOutput {
stdout: String::from("julia version 1.4.0\n"),
stderr: String::default(),
}),
"kotlin -version" => Some(CommandOutput {
stdout: String::from("Kotlin version 1.4.21-release-411 (JRE 14.0.1+7)\n"),
stderr: String::default(),
}),
"kotlinc -version" =>
|