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| Name: perl-IO-Interactive | Distribution: SUSE Linux Enterprise 16 |
| Version: 1.025 | Vendor: openSUSE |
| Release: bp160.1.11 | Build date: Thu Jul 6 05:07:27 2023 |
| Group: Unspecified | Build host: reproducible |
| Size: 23846 | Source RPM: perl-IO-Interactive-1.025-bp160.1.11.src.rpm |
| Packager: https://bugs.opensuse.org | |
| Url: https://metacpan.org/release/IO-Interactive | |
| Summary: Utilities for interactive I/O | |
This module provides three utility subroutines that make it easier to
develop interactive applications.
The 'ARGV' filehandle, the one that '<>' or an empty 'readline()' uses, has
various magic associated with it. It's not actually opened until you try to
read from it. Checking '-t ARGV' before you've tried to read from it might
give you the wrong answer. Not only that, you might not read from 'ARGV'.
If the value in '@ARGV' is the magic filename '-' (a convention to mean the
standard filehandle for input or output), 'ARGV' might actually be 'STDIN'.
You don't want to think about all of this. This module is discussed in
_Perl Best Practices_ on page 218. Also see the 'ARGV' entry in perlvar and
the 'readline' entry in perlfunc.
* 'is_interactive()'
This subroutine returns true if '*ARGV' and the currently selected
filehandle (usually '*STDOUT') are connected to the terminal. The test is
considerably more sophisticated than:
-t *ARGV && -t *STDOUT
as it takes into account the magic behaviour of '*ARGV'.
You can also pass 'is_interactive' a writable filehandle, in which case it
requires that filehandle be connected to a terminal (instead of the
currently selected). The usual suspect here is '*STDERR':
if ( is_interactive(*STDERR) ) {
carp $warning;
}
Note that 'is_interactive' may return true in a Windows Scheduled Task. See
Github #6 (https://github.com/briandfoy/io-interactive/issues/6).
* 'interactive()'
This subroutine returns '*STDOUT' if 'is_interactive' is true. If
'is_interactive()' is false, 'interactive' returns a filehandle that does
not print.
This makes it easy to create applications that print out only when the
application is interactive:
print {interactive} "Please enter a value: ";
my $value = <>;
You can also pass 'interactive' a writable filehandle, in which case it
writes to that filehandle if it is connected to a terminal (instead of
writing to '*STDOUT'). Once again, the usual suspect is '*STDERR':
print {interactive(*STDERR)} $warning;
* 'busy {...}'
This subroutine takes a block as its single argument and executes that
block. Whilst the block is executed, '*ARGV' is temporarily replaced by a
closed filehandle. That is, no input from '*ARGV' is possible in a 'busy'
block. Furthermore, any attempts to send input into the 'busy' block
through '*ARGV' is intercepted and a warning message is printed to
'*STDERR'. The 'busy' call returns a filehandle that contains the
intercepted input.
A 'busy' block is therefore useful to prevent attempts at input when the
program is busy at some non-interactive task.
Artistic-2.0
* Thu Jul 06 2023 Tina Müller <timueller+perl@suse.de>
- updated to 1.025
see /usr/share/doc/packages/perl-IO-Interactive/Changes
1.025 2023-07-05T15:01:36Z
* Remove unnecessary -T from pod tests now that v5.38 allows you to
compile a perl without taint support. Those perls will refuse to run
the programs using -T.
* Thu Feb 04 2021 Tina Müller <timueller+perl@suse.de>
- updated to 1.023
see /usr/share/doc/packages/perl-IO-Interactive/Changes
1.023 2021-02-03T22:37:57Z
* Explain why ARGV is a problem (Github #9)
* Freshen distro, remove Travis CI, add Github Actions
* Mon Sep 05 2016 coolo@suse.com
- updated to 1.022
see /usr/share/doc/packages/perl-IO-Interactive/Changes
* Sun Feb 07 2016 coolo@suse.com
- updated to 1.021
see /usr/share/doc/packages/perl-IO-Interactive/Changes
* Fri Nov 18 2011 coolo@suse.com
- use original .tar.gz
* Mon Jan 17 2011 coolo@novell.com
- initial package 0.0.6
* created by cpanspec 1.78.03
/usr/lib/perl5/vendor_perl/5.42.0/IO /usr/lib/perl5/vendor_perl/5.42.0/IO/Interactive.pm /usr/share/doc/packages/perl-IO-Interactive /usr/share/doc/packages/perl-IO-Interactive/Changes /usr/share/doc/packages/perl-IO-Interactive/examples /usr/share/doc/packages/perl-IO-Interactive/examples/interactive.pl /usr/share/doc/packages/perl-IO-Interactive/examples/memory_test.pl /usr/share/licenses/perl-IO-Interactive /usr/share/licenses/perl-IO-Interactive/LICENSE /usr/share/man/man3/IO::Interactive.3pm.gz
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