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joko |
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#!/usr/bin/perl |
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use warnings; |
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use strict; |
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use POE qw( Wheel::Run Filter::Line ); |
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# Start the session. Spawn a simple program, and describe the events |
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# it will generate as it does things. |
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sub _start { |
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my ( $kernel, $heap ) = @_[ KERNEL, HEAP ]; |
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$heap->{child} = POE::Wheel::Run->new |
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#( Program => [ "/bin/ls", "-1", "/" ], # Program to run. |
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( Program => [ "dir", "-1", "/" ], # Program to run. |
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#( Program => [ "bin/ls.exe", "-1", "/" ], # Program to run. |
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Filter => POE::Filter::Line->new(), # Child speaks in lines. |
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StdoutEvent => "got_child_stdout", # Child wrote to STDOUT. |
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StderrEvent => "got_child_stderr", # Child wrote to STDERR. |
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#CloseEvent => "got_child_close", # Child stopped writing. |
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); |
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} |
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# Deal with information the child wrote to its STDOUT. |
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sub got_child_stdout { |
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my $stdout = $_[ARG0]; |
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print "STDOUT: $stdout\n"; |
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} |
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# Deal with information the child wrote to its STDERR. These are |
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# warnings and possibly error messages. |
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sub got_child_stderr { |
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my $stderr = $_[ARG0]; |
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$stderr =~ tr[ -~][]cd; |
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print "STDERR: $stderr\n"; |
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} |
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# The child has closed its output filehandles. It will not be sending |
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# us any more information, so destroy it. |
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sub got_child_close { |
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my $heap = $_[HEAP]; |
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print "child closed.\n"; |
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delete $heap->{child}; |
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} |
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# A list of functions that will handle the events they're named after. |
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my @handlers = |
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qw( _start got_child_stdout got_child_stderr got_child_close |
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); |
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# Start a session where each event is handled by a function with the |
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# same name. Run POE's Kernel (and thus all its sessions) until done. |
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POE::Session->create( package_states => [ main => \@handlers ] ); |
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$poe_kernel->run(); |
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