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package App::Rad::Help; |
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2600
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use Attribute::Handlers; |
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8789
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use strict; |
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use warnings; |
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our $VERSION = '0.03'; |
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sub load { |
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my ($self, $c) = @_; |
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$c->register('help', \&help, 'show syntax and available commands'); |
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} |
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# shows specific help commands |
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# TODO: context specific help, |
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# such as "myapp.pl help command" |
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sub help { |
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my $c = shift; |
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return usage() . "\n\n" . helpstr($c); |
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} |
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sub usage { |
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return "Usage: $0 command [arguments]"; |
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} |
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sub helpstr { |
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my $c = shift; |
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my $string = "Available Commands:\n"; |
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# get length of largest command name |
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my $len = 0; |
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foreach ( sort $c->commands() ) { |
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$len = length($_) if (length($_) > $len); |
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} |
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# format help string |
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foreach ( sort $c->commands() ) { |
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$string .= sprintf " %-*s\t%s\n", $len, $_, |
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defined ($c->{'_commands'}->{$_}->help) |
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? $c->{'_commands'}->{$_}->help |
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: '' |
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; |
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; |
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} |
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return $string; |
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} |
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{ |
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my %help_attr = (); |
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sub UNIVERSAL::Help :ATTR(CODE) { |
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0
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0
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my ($package, $symbol, undef, undef, $data) = (@_); |
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if ($package eq 'main') { |
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# If data is a single word, it is received as an array ref. Don't ask. |
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$data = join(' ', @$data) if ref($data) eq 'ARRAY'; |
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$help_attr{ *{$symbol}{NAME} } = $data; |
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58
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} |
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} |
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1
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1
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17
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60
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61
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sub get_help_attr_for { |
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0
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0
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1
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my ($self, $cmd) = (@_); |
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0
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return $help_attr{$cmd}; |
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} |
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} |
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42; |
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__END__ |