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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙpackage TAP::Parser::Iterator::Process; use strict; use warnings; use Config; use IO::Handle; use base 'TAP::Parser::Iterator'; my $IS_WIN32 = ( $^O =~ /^(MS)?Win32$/ ); =head1 NAME TAP::Parser::Iterator::Process - Iterator for process-based TAP sources =head1 VERSION Version 3.44 =cut our $VERSION = '3.44'; =head1 SYNOPSIS use TAP::Parser::Iterator::Process; my %args = ( command => ['python', 'setup.py', 'test'], merge => 1, setup => sub { ... }, teardown => sub { ... }, ); my $it = TAP::Parser::Iterator::Process->new(\%args); my $line = $it->next; =head1 DESCRIPTION This is a simple iterator wrapper for executing external processes, used by L. Unless you're writing a plugin or subclassing, you probably won't need to use this module directly. =head1 METHODS =head2 Class Methods =head3 C Create an iterator. Expects one argument containing a hashref of the form: command => \@command_to_execute merge => $attempt_merge_stderr_and_stdout? setup => $callback_to_setup_command teardown => $callback_to_teardown_command Tries to uses L & L to communicate with the spawned process if they are available. Falls back onto C. =head2 Instance Methods =head3 C Iterate through the process output, of course. =head3 C Iterate raw input without applying any fixes for quirky input syntax. =head3 C Get the wait status for this iterator's process. =head3 C Get the exit status for this iterator's process. =cut { no warnings 'uninitialized'; # get around a catch22 in the test suite that causes failures on Win32: local $SIG{__DIE__} = undef; eval { require POSIX; &POSIX::WEXITSTATUS(0) }; if ($@) { *_wait2exit = sub { $_[1] >> 8 }; } else { *_wait2exit = sub { POSIX::WEXITSTATUS( $_[1] ) } } } sub _use_open3 { my $self = shift; return unless $Config{d_fork} || $IS_WIN32; for my $module (qw( IPC::Open3 IO::Select )) { eval "use $module"; return if $@; } return 1; } { my $got_unicode; sub _get_unicode { return $got_unicode if defined $got_unicode; eval 'use Encode qw(decode_utf8);'; $got_unicode = $@ ? 0 : 1; } } # new() implementation supplied by TAP::Object sub _initialize { my ( $self, $args ) = @_; my @command = @{ delete $args->{command} || [] } or die "Must supply a command to execute"; $self->{command} = [@command]; # Private. Used to frig with chunk size during testing. my $chunk_size = delete $args->{_chunk_size} || 65536; my $merge = delete $args->{merge}; my ( $pid, $err, $sel ); if ( my $setup = delete $args->{setup} ) { $setup->(@command); } my $out = IO::Handle->new; if ( $self->_use_open3 ) { # HOTPATCH {{{ my $xclose = \&IPC::Open3::xclose; no warnings; local *IPC::Open3::xclose = sub { my $fh = shift; no strict 'refs'; return if ( fileno($fh) == fileno(STDIN) ); $xclose->($fh); }; # }}} if ($IS_WIN32) { $err = $merge ? '' : '>&STDERR'; eval { $pid = open3( '<&STDIN', $out, $merge ? '' : $err, @command ); }; die "Could not execute (@command): $@" if $@; if ( $] >= 5.006 ) { binmode($out, ":crlf"); } } else { $err = $merge ? '' : IO::Handle->new; eval { $pid = open3( '<&STDIN', $out, $err, @command ); }; die "Could not execute (@command): $@" if $@; $sel = $merge ? undef : IO::Select->new( $out, $err ); } } else { $err = ''; my $command = join( ' ', map { $_ =~ /\s/ ? qq{"$_"} : $_ } @command ); open( $out, "$command|" ) or die "Could not execute ($command): $!"; } $self->{out} = $out; $self->{err} = $err; $self->{sel} = $sel; $self->{pid} = $pid; $self->{exit} = undef; $self->{chunk_size} = $chunk_size; if ( my $teardown = delete $args->{teardown} ) { $self->{teardown} = sub { $teardown->(@command); }; } return $self; } =head3 C Upgrade the input stream to handle UTF8. =cut sub handle_unicode { my $self = shift; if ( $self->{sel} ) { if ( _get_unicode() ) { # Make sure our iterator has been constructed and... my $next = $self->{_next} ||= $self->_next; # ...wrap it to do UTF8 casting $self->{_next} = sub { my $line = $next->(); return decode_utf8($line) if defined $line; return; }; } } else { if ( $] >= 5.008 ) { eval 'binmode($self->{out}, ":utf8")'; } } } ############################################################################## sub wait { shift->{wait} } sub exit { shift->{exit} } sub _next { my $self = shift; if ( my $out = $self->{out} ) { if ( my $sel = $self->{sel} ) { my $err = $self->{err}; my @buf = (); my $partial = ''; # Partial line my $chunk_size = $self->{chunk_size}; return sub { return shift @buf if @buf; READ: while ( my @ready = $sel->can_read ) { for my $fh (@ready) { my $got = sysread $fh, my ($chunk), $chunk_size; if ( $got == 0 ) { $sel->remove($fh); } elsif ( $fh == $err ) { print STDERR $chunk; # echo STDERR } else { $chunk = $partial . $chunk; $partial = ''; # Make sure we have a complete line unless ( substr( $chunk, -1, 1 ) eq "\n" ) { my $nl = rindex $chunk, "\n"; if ( $nl == -1 ) { $partial = $chunk; redo READ; } else { $partial = substr( $chunk, $nl + 1 ); $chunk = substr( $chunk, 0, $nl ); } } push @buf, split /\n/, $chunk; return shift @buf if @buf; } } } # Return partial last line if ( length $partial ) { my $last = $partial; $partial = ''; return $last; } $self->_finish; return; }; } else { return sub { if ( defined( my $line = <$out> ) ) { chomp $line; return $line; } $self->_finish; return; }; } } else { return sub { $self->_finish; return; }; } } sub next_raw { my $self = shift; return ( $self->{_next} ||= $self->_next )->(); } sub _finish { my $self = shift; my $status = $?; # Avoid circular refs $self->{_next} = sub {return} if $] >= 5.006; # If we have a subprocess we need to wait for it to terminate if ( defined $self->{pid} ) { if ( $self->{pid} == waitpid( $self->{pid}, 0 ) ) { $status = $?; } } ( delete $self->{out} )->close if $self->{out}; # If we have an IO::Select we also have an error handle to close. if ( $self->{sel} ) { ( delete $self->{err} )->close; delete $self->{sel}; } else { $status = $?; } # Sometimes we get -1 on Windows. Presumably that means status not # available. $status = 0 if $IS_WIN32 && $status == -1; $self->{wait} = $status; $self->{exit} = $self->_wait2exit($status); if ( my $teardown = $self->{teardown} ) { $teardown->(); } return $self; } =head3 C Return a list of filehandles that may be used upstream in a select() call to signal that this Iterator is ready. Iterators that are not handle based should return an empty list. =cut sub get_select_handles { my $self = shift; return grep $_, ( $self->{out}, $self->{err} ); } 1; =head1 ATTRIBUTION Originally ripped off from L. =head1 SEE ALSO L, L, L, =cut