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.\" ========================================================================
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.IX Title "TAP::Parser::Iterator::Process 3"
.TH TAP::Parser::Iterator::Process 3 "2018-03-19" "perl v5.10.1" "User Contributed Perl Documentation"
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.SH "NAME"
TAP::Parser::Iterator::Process \- Iterator for process\-based TAP sources
.SH "VERSION"
.IX Header "VERSION"
Version 3.42
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 9
\&  use TAP::Parser::Iterator::Process;
\&  my %args = (
\&   command  => [\*(Aqpython\*(Aq, \*(Aqsetup.py\*(Aq, \*(Aqtest\*(Aq],
\&   merge    => 1,
\&   setup    => sub { ... },
\&   teardown => sub { ... },
\&  );
\&  my $it   = TAP::Parser::Iterator::Process\->new(\e%args);
\&  my $line = $it\->next;
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This is a simple iterator wrapper for executing external processes, used by
TAP::Parser.  Unless you're writing a plugin or subclassing, you probably
won't need to use this module directly.
.SH "METHODS"
.IX Header "METHODS"
.SS "Class Methods"
.IX Subsection "Class Methods"
\fI\f(CI\*(C`new\*(C'\fI\fR
.IX Subsection "new"
.PP
Create an iterator.  Expects one argument containing a hashref of the form:
.PP
.Vb 4
\&   command  => \e@command_to_execute
\&   merge    => $attempt_merge_stderr_and_stdout?
\&   setup    => $callback_to_setup_command
\&   teardown => $callback_to_teardown_command
.Ve
.PP
Tries to uses IPC::Open3 & IO::Select to communicate with the spawned
process if they are available.  Falls back onto \f(CW\*(C`open()\*(C'\fR.
.SS "Instance Methods"
.IX Subsection "Instance Methods"
\fI\f(CI\*(C`next\*(C'\fI\fR
.IX Subsection "next"
.PP
Iterate through the process output, of course.
.PP
\fI\f(CI\*(C`next_raw\*(C'\fI\fR
.IX Subsection "next_raw"
.PP
Iterate raw input without applying any fixes for quirky input syntax.
.PP
\fI\f(CI\*(C`wait\*(C'\fI\fR
.IX Subsection "wait"
.PP
Get the wait status for this iterator's process.
.PP
\fI\f(CI\*(C`exit\*(C'\fI\fR
.IX Subsection "exit"
.PP
Get the exit status for this iterator's process.
.PP
\fI\f(CI\*(C`handle_unicode\*(C'\fI\fR
.IX Subsection "handle_unicode"
.PP
Upgrade the input stream to handle \s-1UTF8\s0.
.PP
\fI\f(CI\*(C`get_select_handles\*(C'\fI\fR
.IX Subsection "get_select_handles"
.PP
Return a list of filehandles that may be used upstream in a \fIselect()\fR
call to signal that this Iterator is ready. Iterators that are not
handle based should return an empty list.
.SH "ATTRIBUTION"
.IX Header "ATTRIBUTION"
Originally ripped off from Test::Harness.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
TAP::Object,
TAP::Parser,
TAP::Parser::Iterator,
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