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dpavlin |
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# Dobrica Pavlinusic, <dpavlin@rot13.org> 06/06/07 12:04:23 CEST |
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package Perly::Depends; |
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=head1 NAME |
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Perly::Depends |
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=head1 DESCRIPTION |
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Code to parse dependecy from file, based on L<Module::Dependency::Indexer> C<_parseFile>. |
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=head1 METHODS |
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=cut |
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use strict; |
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use warnings; |
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=head2 parse |
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my $tree = Perly::Depends->parse( $source ); |
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=cut |
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sub parse { |
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my $self = shift; |
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my $source = shift || die "no source?"; |
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$self = { |
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depends_on => [], |
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depended_upon_by => [], |
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}; |
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dpavlin |
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my %seen = ( strict => 1 ); |
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my $in_pod; |
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my $l = 0; |
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foreach ( split(/[\n\r]/, $source) ) { |
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$l++; |
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s/\r?\n$//; |
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if ($in_pod) { |
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$in_pod = 0 if /^=cut/; |
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next; |
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} |
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# get the package name |
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if (m/^\s*package\s+([\w\:]+)\s*;/) { |
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# XXX currently only record the first package seen |
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if (exists $self->{'package'}) { |
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warn "Can only index one package per file currently, ignoring $1 at line $l\n"; |
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next; |
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} |
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$self->{'package'} = $1; |
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} |
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# get the dependencies |
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if (m/^\s*use\s+([\w\:]+)/) { |
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push( @{ $self->{'depends_on'} }, $1 ) unless ( $seen{$1}++ ); |
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} |
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# get the dependencies |
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if (m/^\s*require\s+([^\s;]+)/) { # "require Bar;" or "require 'Foo/Bar.pm' if $wibble;' |
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my $required = $1; |
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if ($required =~ m/^([\w\:]+)$/) { |
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push @{ $self->{'depends_on'} }, $required unless $seen{$required}++; |
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} |
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elsif ($required =~ m/^["'](.*?\.pm)["']$/) { # simple Foo/Bar.pm case |
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($required = $1) =~ s/\.pm$//; |
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$required =~ s!/!::!g; |
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push @{ $self->{'depends_on'} }, $required unless $seen{$required}++; |
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} |
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else { |
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warn "Can't interpret $_ at line $l\n" |
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unless m!sys/syscall.ph! |
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or m!dumpvar.pl! |
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or $required =~ /^5\./; |
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} |
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} |
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=for later |
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# the 'base' pragma - SREZIC |
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if (m/^\s*use\s+base\s+(.*)/) { |
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require Safe; |
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my $safe = new Safe; |
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( my $list = $1 ) =~ s/\s+\#.*//; |
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$list =~ s/[\r\n]//; |
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while ( $list !~ /;\s*$/ && ( $_ = <FILE> ) ) { |
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s/\s+#.*//; |
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s/[\r\n]//; |
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$list .= $_; |
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} |
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$list =~ s/;\s*$//; |
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my (@mods) = $safe->reval($list); |
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warn "Unable to eval $_ at line $l: $@\n" if $@; |
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foreach my $mod (@mods) { |
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push( @{ $self->{'depends_on'} }, $mod ) unless ( $seen{$mod}++ ); |
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} |
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} |
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=cut |
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$in_pod = 1 if m/^=\w+/ && !m/^=cut/; |
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last if m/^\s*__(END|DATA)__/; |
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} |
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return $self; |
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} |
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