1 |
joko |
1.1 |
#!/usr/bin/perl |
2 |
|
|
|
3 |
|
|
use warnings; |
4 |
|
|
use strict; |
5 |
|
|
|
6 |
|
|
use POE qw( Wheel::Run Filter::Line ); |
7 |
|
|
|
8 |
|
|
# Start the session. Spawn a simple program, and describe the events |
9 |
|
|
# it will generate as it does things. |
10 |
|
|
|
11 |
|
|
sub _start { |
12 |
|
|
my ( $kernel, $heap ) = @_[ KERNEL, HEAP ]; |
13 |
|
|
|
14 |
|
|
$heap->{child} = POE::Wheel::Run->new |
15 |
|
|
#( Program => [ "/bin/ls", "-1", "/" ], # Program to run. |
16 |
|
|
( Program => [ "dir", "-1", "/" ], # Program to run. |
17 |
|
|
#( Program => [ "bin/ls.exe", "-1", "/" ], # Program to run. |
18 |
|
|
Filter => POE::Filter::Line->new(), # Child speaks in lines. |
19 |
|
|
StdoutEvent => "got_child_stdout", # Child wrote to STDOUT. |
20 |
|
|
StderrEvent => "got_child_stderr", # Child wrote to STDERR. |
21 |
|
|
#CloseEvent => "got_child_close", # Child stopped writing. |
22 |
|
|
); |
23 |
|
|
} |
24 |
|
|
|
25 |
|
|
# Deal with information the child wrote to its STDOUT. |
26 |
|
|
|
27 |
|
|
sub got_child_stdout { |
28 |
|
|
my $stdout = $_[ARG0]; |
29 |
|
|
print "STDOUT: $stdout\n"; |
30 |
|
|
} |
31 |
|
|
|
32 |
|
|
# Deal with information the child wrote to its STDERR. These are |
33 |
|
|
# warnings and possibly error messages. |
34 |
|
|
|
35 |
|
|
sub got_child_stderr { |
36 |
|
|
my $stderr = $_[ARG0]; |
37 |
|
|
$stderr =~ tr[ -~][]cd; |
38 |
|
|
print "STDERR: $stderr\n"; |
39 |
|
|
} |
40 |
|
|
|
41 |
|
|
# The child has closed its output filehandles. It will not be sending |
42 |
|
|
# us any more information, so destroy it. |
43 |
|
|
|
44 |
|
|
sub got_child_close { |
45 |
|
|
my $heap = $_[HEAP]; |
46 |
|
|
print "child closed.\n"; |
47 |
|
|
delete $heap->{child}; |
48 |
|
|
} |
49 |
|
|
|
50 |
|
|
# A list of functions that will handle the events they're named after. |
51 |
|
|
|
52 |
|
|
my @handlers = |
53 |
|
|
qw( _start got_child_stdout got_child_stderr got_child_close |
54 |
|
|
); |
55 |
|
|
|
56 |
|
|
# Start a session where each event is handled by a function with the |
57 |
|
|
# same name. Run POE's Kernel (and thus all its sessions) until done. |
58 |
|
|
|
59 |
|
|
POE::Session->create( package_states => [ main => \@handlers ] ); |
60 |
|
|
$poe_kernel->run(); |
61 |
|
|
|