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.\" ========================================================================
.\"
.IX Title "App::Info::Handler::Print 3pm"
.TH App::Info::Handler::Print 3pm "2015-06-06" "perl v5.20.2" "User Contributed Perl Documentation"
.\" For nroff, turn off justification. Always turn off hyphenation; it makes
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.SH "NAME"
App::Info::Handler::Print \- Print App::Info event messages
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 2
\& use App::Info::Category::FooApp;
\& use App::Info::Handler::Print;
\&
\& my $stdout = App::Info::Handler::Print\->new( fh => \*(Aqstdout\*(Aq );
\& my $app = App::Info::Category::FooApp\->new( on_info => $stdout );
\&
\& # Or...
\& my $app = App::Info::Category::FooApp\->new( on_error => \*(Aqstderr\*(Aq );
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
App::Info::Handler::Print objects handle App::Info events by printing their
messages to a filehandle. This means that if you want event messages to print
to a file or to a system filehandle, you can easily do it with this class.
You'll find, however, that App::Info::Handler::Print is most effective for
info and error events; unknown and prompt events are better handled by event
handlers that know how to prompt users for data. See
App::Info::Handler::Prompt for an example of
that functionality.
.PP
Upon loading, App::Info::Handler::Print registers itself with
App::Info::Handler, setting up a couple of strings that can be passed to an
App::Info concrete subclass constructor. These strings are shortcuts that
tell App::Info how to create the proper App::Info::Handler::Print object
for handling events. The registered strings are:
.IP "stdout" 4
.IX Item "stdout"
Prints event messages to \f(CW\*(C`STDOUT\*(C'\fR.
.IP "stderr" 4
.IX Item "stderr"
Prints event messages to \f(CW\*(C`STDERR\*(C'\fR.
.PP
See the \f(CW\*(C`new()\*(C'\fR constructor below for how to have App::Info::Handler::Print
print event messages to different filehandle.
.SH "INTERFACE"
.IX Header "INTERFACE"
.SS "Constructor"
.IX Subsection "Constructor"
\fInew\fR
.IX Subsection "new"
.PP
.Vb 5
\& my $stderr_handler = App::Info::Handler::Print\->new;
\& $stderr_handler = App::Info::Handler::Print\->new( fh => \*(Aqstderr\*(Aq );
\& my $stdout_handler = App::Info::Handler::Print\->new( fh => \*(Aqstdout\*(Aq );
\& my $fh = FileHandle\->new($file);
\& my $fh_handler = App::Info::Handler::Print\->new( fh => $fh );
.Ve
.PP
Constructs a new App::Info::Handler::Print and returns it. It can take a
single parameterized argument, \f(CW\*(C`fh\*(C'\fR, which can be any one of the following
values:
.IP "stderr" 4
.IX Item "stderr"
Constructs a App::Info::Handler::Print object that prints App::Info event
messages to \f(CW\*(C`STDERR\*(C'\fR.
.IP "stdout" 4
.IX Item "stdout"
Constructs a App::Info::Handler::Print object that prints App::Info event
messages to \f(CW\*(C`STDOUT\*(C'\fR.
.IP "FileHandle" 4
.IX Item "FileHandle"
.PD 0
.IP "\s-1GLOB\s0" 4
.IX Item "GLOB"
.PD
Pass in a reference and App::Info::Handler::Print will assume that it's a
filehandle reference that it can print to. Note that passing in something that
can't be printed to will trigger an exception when App::Info::Handler::Print
tries to print to it.
.PP
If the \f(CW\*(C`fh\*(C'\fR parameter is not passed, \f(CW\*(C`new()\*(C'\fR will default to creating an
App::Info::Handler::Print object that prints App::Info event messages to
\&\f(CW\*(C`STDOUT\*(C'\fR.
.PP
\fIhandler\fR
.IX Subsection "handler"
.PP
This method is called by App::Info to print out the message from events.
.SH "SUPPORT"
.IX Header "SUPPORT"
This module is stored in an open GitHub
repository . Feel free to fork and
contribute!
.PP
Please file bug reports via GitHub
Issues or by sending mail to
bug\-App\-Info@rt.cpan.org .
.SH "AUTHOR"
.IX Header "AUTHOR"
David E. Wheeler
.SH "SEE ALSO"
.IX Header "SEE ALSO"
App::Info documents the event handling interface.
.PP
App::Info::Handler::Carp handles events by
passing their messages Carp module functions.
.PP
App::Info::Handler::Prompt offers event handling
more appropriate for unknown and confirm events.
.PP
App::Info::Handler describes how to implement custom
App::Info event handlers.
.SH "COPYRIGHT AND LICENSE"
.IX Header "COPYRIGHT AND LICENSE"
Copyright (c) 2002\-2011, David E. Wheeler. Some Rights Reserved.
.PP
This module is free software; you can redistribute it and/or modify it under the
same terms as Perl itself.