102 lines
2.4 KiB
Rust
102 lines
2.4 KiB
Rust
import run::spawn_process;
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import io::writer_util;
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import libc::{c_int, pid_t};
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export run;
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#[cfg(target_os = "win32")]
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fn target_env(lib_path: str, prog: str) -> option<[(str,str)]> {
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let env = os::env();
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env = vec::map(env) {|pair|
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let (k,v) = pair;
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if k == "PATH" { ("PATH", v + ";" + lib_path) }
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else { (k,v) }
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};
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if str::ends_with(prog, "rustc.exe") {
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env += [("RUST_THREADS", "1")]
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}
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ret some(env);
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}
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#[cfg(target_os = "linux")]
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#[cfg(target_os = "macos")]
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#[cfg(target_os = "freebsd")]
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fn target_env(_lib_path: str, _prog: str) -> option<[(str,str)]> {
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none
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}
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fn run(lib_path: str, prog: str, args: [str],
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input: option<str>) -> {status: int, out: str, err: str} {
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let pipe_in = os::pipe();
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let pipe_out = os::pipe();
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let pipe_err = os::pipe();
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let pid = spawn_process(prog, args, target_env(lib_path, prog), none,
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pipe_in.in, pipe_out.out, pipe_err.out);
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os::close(pipe_in.in);
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os::close(pipe_out.out);
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os::close(pipe_err.out);
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if pid == -1i32 {
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os::close(pipe_in.out);
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os::close(pipe_out.in);
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os::close(pipe_err.in);
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fail;
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}
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writeclose(pipe_in.out, input);
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let p = comm::port();
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let ch = comm::chan(p);
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task::spawn_sched(task::single_threaded) {||
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let errput = readclose(pipe_err.in);
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comm::send(ch, (2, errput));
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};
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task::spawn_sched(task::single_threaded) {||
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let output = readclose(pipe_out.in);
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comm::send(ch, (1, output));
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};
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let status = run::waitpid(pid);
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let mut errs = "";
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let mut outs = "";
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let mut count = 2;
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while count > 0 {
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let stream = comm::recv(p);
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alt check stream {
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(1, s) {
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outs = s;
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}
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(2, s) {
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errs = s;
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}
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};
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count -= 1;
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};
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ret {status: status, out: outs, err: errs};
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}
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fn writeclose(fd: c_int, s: option<str>) {
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if option::is_some(s) {
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let writer = io::fd_writer(fd, false);
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writer.write_str(option::get(s));
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}
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os::close(fd);
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}
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fn readclose(fd: c_int) -> str {
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// Copied from run::program_output
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let file = os::fdopen(fd);
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let reader = io::FILE_reader(file, false);
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let mut buf = "";
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while !reader.eof() {
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let bytes = reader.read_bytes(4096u);
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buf += str::from_bytes(bytes);
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}
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os::fclose(file);
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ret buf;
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}
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