/
procsrv.rs
89 lines (77 loc) · 2.77 KB
/
procsrv.rs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
// Copyright 2012 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 std::old_io::process::{ProcessExit, Command, Process, ProcessOutput};
use std::dynamic_lib::DynamicLibrary;
fn add_target_env(cmd: &mut Command, lib_path: &str, aux_path: Option<&str>) {
// Need to be sure to put both the lib_path and the aux path in the dylib
// search path for the child.
let mut path = DynamicLibrary::search_path();
match aux_path {
Some(p) => path.insert(0, Path::new(p)),
None => {}
}
path.insert(0, Path::new(lib_path));
// Add the new dylib search path var
let var = DynamicLibrary::envvar();
let newpath = DynamicLibrary::create_path(&path);
let newpath = String::from_utf8(newpath).unwrap();
cmd.env(var.to_string(), newpath);
}
pub struct Result {pub status: ProcessExit, pub out: String, pub err: String}
pub fn run(lib_path: &str,
prog: &str,
aux_path: Option<&str>,
args: &[String],
env: Vec<(String, String)> ,
input: Option<String>) -> Option<Result> {
let mut cmd = Command::new(prog);
cmd.args(args);
add_target_env(&mut cmd, lib_path, aux_path);
for (key, val) in env {
cmd.env(key, val);
}
match cmd.spawn() {
Ok(mut process) => {
if let Some(input) = input {
process.stdin.as_mut().unwrap().write_all(input.as_bytes()).unwrap();
}
let ProcessOutput { status, output, error } =
process.wait_with_output().unwrap();
Some(Result {
status: status,
out: String::from_utf8(output).unwrap(),
err: String::from_utf8(error).unwrap()
})
},
Err(..) => None
}
}
pub fn run_background(lib_path: &str,
prog: &str,
aux_path: Option<&str>,
args: &[String],
env: Vec<(String, String)> ,
input: Option<String>) -> Option<Process> {
let mut cmd = Command::new(prog);
cmd.args(args);
add_target_env(&mut cmd, lib_path, aux_path);
for (key, val) in env {
cmd.env(key, val);
}
match cmd.spawn() {
Ok(mut process) => {
if let Some(input) = input {
process.stdin.as_mut().unwrap().write_all(input.as_bytes()).unwrap();
}
Some(process)
},
Err(..) => None
}
}