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root |
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require 5; |
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package Pod::Perldoc::GetOptsOO; |
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use strict; |
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# Rather like Getopt::Std's getopts |
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# Call Pod::Perldoc::GetOptsOO::getopts($object, \@ARGV, $truth) |
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# Given -n, if there's a opt_n_with, it'll call $object->opt_n_with( ARGUMENT ) |
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# (e.g., "-n foo" => $object->opt_n_with('foo'). Ditto "-nfoo") |
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# Otherwise (given -n) if there's an opt_n, we'll call it $object->opt_n($truth) |
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# (Truth defaults to 1) |
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# Otherwise we try calling $object->handle_unknown_option('n') |
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# (and we increment the error count by the return value of it) |
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# If there's no handle_unknown_option, then we just warn, and then increment |
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# the error counter |
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# |
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# The return value of Pod::Perldoc::GetOptsOO::getopts is true if no errors, |
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# otherwise it's false. |
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# |
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## sburke@cpan.org 2002-10-31 |
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BEGIN { # Make a DEBUG constant ASAP |
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*DEBUG = defined( &Pod::Perldoc::DEBUG ) |
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? \&Pod::Perldoc::DEBUG |
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: sub(){10}; |
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} |
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sub getopts { |
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my($target, $args, $truth) = @_; |
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$args ||= \@ARGV; |
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$target->aside( |
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"Starting switch processing. Scanning arguments [@$args]\n" |
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) if $target->can('aside'); |
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return unless @$args; |
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$truth = 1 unless @_ > 2; |
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DEBUG > 3 and print " Truth is $truth\n"; |
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my $error_count = 0; |
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while( @$args and ($_ = $args->[0]) =~ m/^-(.)(.*)/s ) { |
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my($first,$rest) = ($1,$2); |
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if ($_ eq '--') { # early exit if "--" |
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shift @$args; |
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last; |
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} |
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my $method = "opt_${first}_with"; |
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if( $target->can($method) ) { # it's argumental |
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if($rest eq '') { # like -f bar |
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shift @$args; |
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warn "Option $first needs a following argument!\n" unless @$args; |
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$rest = shift @$args; |
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} else { # like -fbar (== -f bar) |
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shift @$args; |
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} |
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DEBUG > 3 and print " $method => $rest\n"; |
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$target->$method( $rest ); |
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# Otherwise, it's not argumental... |
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} else { |
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if( $target->can( $method = "opt_$first" ) ) { |
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DEBUG > 3 and print " $method is true ($truth)\n"; |
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$target->$method( $truth ); |
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# Otherwise it's an unknown option... |
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} elsif( $target->can('handle_unknown_option') ) { |
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DEBUG > 3 |
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and print " calling handle_unknown_option('$first')\n"; |
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$error_count += ( |
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$target->handle_unknown_option( $first ) || 0 |
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); |
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} else { |
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++$error_count; |
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warn "Unknown option: $first\n"; |
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} |
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if($rest eq '') { # like -f |
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shift @$args |
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} else { # like -fbar (== -f -bar ) |
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DEBUG > 2 and print " Setting args->[0] to \"-$rest\"\n"; |
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$args->[0] = "-$rest"; |
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} |
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} |
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} |
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$target->aside( |
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"Ending switch processing. Args are [@$args] with $error_count errors.\n" |
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) if $target->can('aside'); |
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$error_count == 0; |
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} |
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1; |
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