core.hidedotfiles: hide '.git' dir by default
[git/dscho.git] / t / test-terminal.perl
blob10172aee18292b50aa24b3a8694b5383c1cfd98e
1 #!/usr/bin/perl
2 use 5.008;
3 use strict;
4 use warnings;
5 use IO::Pty;
6 use File::Copy;
8 # Run @$argv in the background with stdio redirected to $out and $err.
9 sub start_child {
10 my ($argv, $out, $err) = @_;
11 my $pid = fork;
12 if (not defined $pid) {
13 die "fork failed: $!"
14 } elsif ($pid == 0) {
15 open STDOUT, ">&", $out;
16 open STDERR, ">&", $err;
17 close $out;
18 exec(@$argv) or die "cannot exec '$argv->[0]': $!"
20 return $pid;
23 # Wait for $pid to finish.
24 sub finish_child {
25 # Simplified from wait_or_whine() in run-command.c.
26 my ($pid) = @_;
28 my $waiting = waitpid($pid, 0);
29 if ($waiting < 0) {
30 die "waitpid failed: $!";
31 } elsif ($? & 127) {
32 my $code = $? & 127;
33 warn "died of signal $code";
34 return $code - 128;
35 } else {
36 return $? >> 8;
40 sub xsendfile {
41 my ($out, $in) = @_;
43 # Note: the real sendfile() cannot read from a terminal.
45 # It is unspecified by POSIX whether reads
46 # from a disconnected terminal will return
47 # EIO (as in AIX 4.x, IRIX, and Linux) or
48 # end-of-file. Either is fine.
49 copy($in, $out, 4096) or $!{EIO} or die "cannot copy from child: $!";
52 sub copy_stdio {
53 my ($out, $err) = @_;
54 my $pid = fork;
55 defined $pid or die "fork failed: $!";
56 if (!$pid) {
57 close($out);
58 xsendfile(\*STDERR, $err);
59 exit 0;
61 close($err);
62 xsendfile(\*STDOUT, $out);
63 finish_child($pid) == 0
64 or exit 1;
67 if ($#ARGV < 1) {
68 die "usage: test-terminal program args";
70 my $master_out = new IO::Pty;
71 my $master_err = new IO::Pty;
72 $master_out->set_raw();
73 $master_err->set_raw();
74 $master_out->slave->set_raw();
75 $master_err->slave->set_raw();
76 my $pid = start_child(\@ARGV, $master_out->slave, $master_err->slave);
77 close $master_out->slave;
78 close $master_err->slave;
79 copy_stdio($master_out, $master_err);
80 exit(finish_child($pid));