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Name: perl-IO-Interactive | Distribution: openSUSE Leap 16.0 |
Version: 1.025 | Vendor: openSUSE |
Release: lp160.1.1 | Build date: Thu Jul 6 05:07:27 2023 |
Group: Unspecified | Build host: reproducible |
Size: 23807 | Source RPM: perl-IO-Interactive-1.025-lp160.1.1.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/5.38.2/IO /usr/lib/perl5/vendor_perl/5.38.2/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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