--- /dev/null
+# -*- mode: cperl; tab-width: 8; indent-tabs-mode: nil; basic-offset: 2 -*-
+# vim:ts=8:sw=2:et:sta:sts=2
+package Module::Metadata;
+
+# stolen from Module::Build::Version and ::Base - this is perl licensed code,
+# copyright them.
+
+# This module provides routines to gather information about
+# perl modules (assuming this may be expanded in the distant
+# parrot future to look at other types of modules).
+
+use strict;
+use vars qw($VERSION);
+$VERSION = '0.36_04';
+$VERSION = eval $VERSION;
+
+use File::Spec;
+use IO::File;
+use Module::Metadata::Version;
+use Log::Contextual qw(:log :dlog);
+use File::Find qw(find);
+
+my $V_NUM_REGEXP = qr{v?[0-9._]+}; # crudely, a v-string or decimal
+
+my $PKG_REGEXP = qr{ # match a package declaration
+ ^[\s\{;]* # intro chars on a line
+ package # the word 'package'
+ \s+ # whitespace
+ ([\w:]+) # a package name
+ \s* # optional whitespace
+ ($V_NUM_REGEXP)? # optional version number
+ \s* # optional whitesapce
+ ; # semicolon line terminator
+}x;
+
+my $VARNAME_REGEXP = qr{ # match fully-qualified VERSION name
+ ([\$*]) # sigil - $ or *
+ (
+ ( # optional leading package name
+ (?:::|\')? # possibly starting like just :: (Ì la $::VERSION)
+ (?:\w+(?:::|\'))* # Foo::Bar:: ...
+ )?
+ VERSION
+ )\b
+}x;
+
+my $VERS_REGEXP = qr{ # match a VERSION definition
+ (?:
+ \(\s*$VARNAME_REGEXP\s*\) # with parens
+ |
+ $VARNAME_REGEXP # without parens
+ )
+ \s*
+ =[^=~] # = but not ==, nor =~
+}x;
+
+
+sub new_from_file {
+ my $class = shift;
+ my $filename = File::Spec->rel2abs( shift );
+
+ return undef unless defined( $filename ) && -f $filename;
+ return $class->_init(undef, $filename, @_);
+}
+
+sub new_from_module {
+ my $class = shift;
+ my $module = shift;
+ my %props = @_;
+
+ $props{inc} ||= \@INC;
+ my $filename = $class->find_module_by_name( $module, $props{inc} );
+ return undef unless defined( $filename ) && -f $filename;
+ return $class->_init($module, $filename, %props);
+}
+
+{
+
+ my $compare_versions = sub {
+ my ($v1, $op, $v2) = @_;
+ $v1 = Module::Metadata::Version->new($v1)
+ unless UNIVERSAL::isa($v1,'Module::Metadata::Version');
+
+ my $eval_str = "\$v1 $op \$v2";
+ my $result = eval $eval_str;
+ log_info { "error comparing versions: '$eval_str' $@" } if $@;
+
+ return $result;
+ };
+
+ my $normalize_version = sub {
+ my ($version) = @_;
+ if ( $version =~ /[=<>!,]/ ) { # logic, not just version
+ # take as is without modification
+ }
+ elsif ( ref $version eq 'version' ||
+ ref $version eq 'Module::Metadata::Version' ) { # version objects
+ $version = $version->is_qv ? $version->normal : $version->stringify;
+ }
+ elsif ( $version =~ /^[^v][^.]*\.[^.]+\./ ) { # no leading v, multiple dots
+ # normalize string tuples without "v": "1.2.3" -> "v1.2.3"
+ $version = "v$version";
+ }
+ else {
+ # leave alone
+ }
+ return $version;
+ };
+
+ # separate out some of the conflict resolution logic
+
+ my $resolve_module_versions = sub {
+ my $packages = shift;
+
+ my( $file, $version );
+ my $err = '';
+ foreach my $p ( @$packages ) {
+ if ( defined( $p->{version} ) ) {
+ if ( defined( $version ) ) {
+ if ( $compare_versions->( $version, '!=', $p->{version} ) ) {
+ $err .= " $p->{file} ($p->{version})\n";
+ } else {
+ # same version declared multiple times, ignore
+ }
+ } else {
+ $file = $p->{file};
+ $version = $p->{version};
+ }
+ }
+ $file ||= $p->{file} if defined( $p->{file} );
+ }
+
+ if ( $err ) {
+ $err = " $file ($version)\n" . $err;
+ }
+
+ my %result = (
+ file => $file,
+ version => $version,
+ err => $err
+ );
+
+ return \%result;
+ };
+
+ sub package_versions_from_directory {
+ my ( $class, $dir, $files ) = @_;
+
+ my @files;
+
+ if ( $files ) {
+ @files = @$files;
+ } else {
+ find( {
+ wanted => sub {
+ push @files, $_ if -f $_ && /\.pm$/;
+ },
+ no_chdir => 1,
+ }, $dir );
+ }
+
+ # First, we enumerate all packages & versions,
+ # separating into primary & alternative candidates
+ my( %prime, %alt );
+ foreach my $file (@files) {
+ my $mapped_filename = File::Spec->abs2rel( $file, $dir );
+ my @path = split( /\//, $mapped_filename );
+ (my $prime_package = join( '::', @path )) =~ s/\.pm$//;
+
+ my $pm_info = $class->new_from_file( $file );
+
+ foreach my $package ( $pm_info->packages_inside ) {
+ next if $package eq 'main'; # main can appear numerous times, ignore
+ next if $package eq 'DB'; # special debugging package, ignore
+ next if grep /^_/, split( /::/, $package ); # private package, ignore
+
+ my $version = $pm_info->version( $package );
+
+ if ( $package eq $prime_package ) {
+ if ( exists( $prime{$package} ) ) {
+ # M::B::ModuleInfo will handle this conflict
+ die "Unexpected conflict in '$package'; multiple versions found.\n";
+ } else {
+ $prime{$package}{file} = $mapped_filename;
+ $prime{$package}{version} = $version if defined( $version );
+ }
+ } else {
+ push( @{$alt{$package}}, {
+ file => $mapped_filename,
+ version => $version,
+ } );
+ }
+ }
+ }
+
+ # Then we iterate over all the packages found above, identifying conflicts
+ # and selecting the "best" candidate for recording the file & version
+ # for each package.
+ foreach my $package ( keys( %alt ) ) {
+ my $result = $resolve_module_versions->( $alt{$package} );
+
+ if ( exists( $prime{$package} ) ) { # primary package selected
+
+ if ( $result->{err} ) {
+ # Use the selected primary package, but there are conflicting
+ # errors among multiple alternative packages that need to be
+ # reported
+ log_info {
+ "Found conflicting versions for package '$package'\n" .
+ " $prime{$package}{file} ($prime{$package}{version})\n" .
+ $result->{err}
+ };
+
+ } elsif ( defined( $result->{version} ) ) {
+ # There is a primary package selected, and exactly one
+ # alternative package
+
+ if ( exists( $prime{$package}{version} ) &&
+ defined( $prime{$package}{version} ) ) {
+ # Unless the version of the primary package agrees with the
+ # version of the alternative package, report a conflict
+ if ( $compare_versions->(
+ $prime{$package}{version}, '!=', $result->{version}
+ )
+ ) {
+
+ log_info {
+ "Found conflicting versions for package '$package'\n" .
+ " $prime{$package}{file} ($prime{$package}{version})\n" .
+ " $result->{file} ($result->{version})\n"
+ };
+ }
+
+ } else {
+ # The prime package selected has no version so, we choose to
+ # use any alternative package that does have a version
+ $prime{$package}{file} = $result->{file};
+ $prime{$package}{version} = $result->{version};
+ }
+
+ } else {
+ # no alt package found with a version, but we have a prime
+ # package so we use it whether it has a version or not
+ }
+
+ } else { # No primary package was selected, use the best alternative
+
+ if ( $result->{err} ) {
+ log_info {
+ "Found conflicting versions for package '$package'\n" .
+ $result->{err}
+ };
+ }
+
+ # Despite possible conflicting versions, we choose to record
+ # something rather than nothing
+ $prime{$package}{file} = $result->{file};
+ $prime{$package}{version} = $result->{version}
+ if defined( $result->{version} );
+ }
+ }
+
+ # Normalize versions. Can't use exists() here because of bug in YAML::Node.
+ # XXX "bug in YAML::Node" comment seems irrelvant -- dagolden, 2009-05-18
+ for (grep defined $_->{version}, values %prime) {
+ $_->{version} = $normalize_version->( $_->{version} );
+ }
+
+ return \%prime;
+ }
+}
+
+
+sub _init {
+ my $class = shift;
+ my $module = shift;
+ my $filename = shift;
+ my %props = @_;
+
+ my( %valid_props, @valid_props );
+ @valid_props = qw( collect_pod inc );
+ @valid_props{@valid_props} = delete( @props{@valid_props} );
+ warn "Unknown properties: @{[keys %props]}\n" if scalar( %props );
+
+ my %data = (
+ module => $module,
+ filename => $filename,
+ version => undef,
+ packages => [],
+ versions => {},
+ pod => {},
+ pod_headings => [],
+ collect_pod => 0,
+
+ %valid_props,
+ );
+
+ my $self = bless(\%data, $class);
+
+ $self->_parse_file();
+
+ unless($self->{module} and length($self->{module})) {
+ my ($v, $d, $f) = File::Spec->splitpath($self->{filename});
+ if($f =~ /\.pm$/) {
+ $f =~ s/\..+$//;
+ my @candidates = grep /$f$/, @{$self->{packages}};
+ $self->{module} = shift(@candidates); # punt
+ }
+ else {
+ if(grep /main/, @{$self->{packages}}) {
+ $self->{module} = 'main';
+ }
+ else {
+ $self->{module} = $self->{packages}[0] || '';
+ }
+ }
+ }
+
+ $self->{version} = $self->{versions}{$self->{module}}
+ if defined( $self->{module} );
+
+ return $self;
+}
+
+# class method
+sub _do_find_module {
+ my $class = shift;
+ my $module = shift || die 'find_module_by_name() requires a package name';
+ my $dirs = shift || \@INC;
+
+ my $file = File::Spec->catfile(split( /::/, $module));
+ foreach my $dir ( @$dirs ) {
+ my $testfile = File::Spec->catfile($dir, $file);
+ return [ File::Spec->rel2abs( $testfile ), $dir ]
+ if -e $testfile and !-d _; # For stuff like ExtUtils::xsubpp
+ return [ File::Spec->rel2abs( "$testfile.pm" ), $dir ]
+ if -e "$testfile.pm";
+ }
+ return;
+}
+
+# class method
+sub find_module_by_name {
+ my $found = shift()->_do_find_module(@_) or return;
+ return $found->[0];
+}
+
+# class method
+sub find_module_dir_by_name {
+ my $found = shift()->_do_find_module(@_) or return;
+ return $found->[1];
+}
+
+
+# given a line of perl code, attempt to parse it if it looks like a
+# $VERSION assignment, returning sigil, full name, & package name
+sub _parse_version_expression {
+ my $self = shift;
+ my $line = shift;
+
+ my( $sig, $var, $pkg );
+ if ( $line =~ $VERS_REGEXP ) {
+ ( $sig, $var, $pkg ) = $2 ? ( $1, $2, $3 ) : ( $4, $5, $6 );
+ if ( $pkg ) {
+ $pkg = ($pkg eq '::') ? 'main' : $pkg;
+ $pkg =~ s/::$//;
+ }
+ }
+
+ return ( $sig, $var, $pkg );
+}
+
+sub _parse_file {
+ my $self = shift;
+
+ my $filename = $self->{filename};
+ my $fh = IO::File->new( $filename )
+ or die( "Can't open '$filename': $!" );
+
+ $self->_parse_fh($fh);
+}
+
+sub _parse_fh {
+ my ($self, $fh) = @_;
+
+ my( $in_pod, $seen_end, $need_vers ) = ( 0, 0, 0 );
+ my( @pkgs, %vers, %pod, @pod );
+ my $pkg = 'main';
+ my $pod_sect = '';
+ my $pod_data = '';
+
+ while (defined( my $line = <$fh> )) {
+ my $line_num = $.;
+
+ chomp( $line );
+ next if $line =~ /^\s*#/;
+
+ $in_pod = ($line =~ /^=(?!cut)/) ? 1 : ($line =~ /^=cut/) ? 0 : $in_pod;
+
+ # Would be nice if we could also check $in_string or something too
+ last if !$in_pod && $line =~ /^__(?:DATA|END)__$/;
+
+ if ( $in_pod || $line =~ /^=cut/ ) {
+
+ if ( $line =~ /^=head\d\s+(.+)\s*$/ ) {
+ push( @pod, $1 );
+ if ( $self->{collect_pod} && length( $pod_data ) ) {
+ $pod{$pod_sect} = $pod_data;
+ $pod_data = '';
+ }
+ $pod_sect = $1;
+
+
+ } elsif ( $self->{collect_pod} ) {
+ $pod_data .= "$line\n";
+
+ }
+
+ } else {
+
+ $pod_sect = '';
+ $pod_data = '';
+
+ # parse $line to see if it's a $VERSION declaration
+ my( $vers_sig, $vers_fullname, $vers_pkg ) =
+ $self->_parse_version_expression( $line );
+
+ if ( $line =~ $PKG_REGEXP ) {
+ $pkg = $1;
+ push( @pkgs, $pkg ) unless grep( $pkg eq $_, @pkgs );
+ $vers{$pkg} = (defined $2 ? $2 : undef) unless exists( $vers{$pkg} );
+ $need_vers = defined $2 ? 0 : 1;
+
+ # VERSION defined with full package spec, i.e. $Module::VERSION
+ } elsif ( $vers_fullname && $vers_pkg ) {
+ push( @pkgs, $vers_pkg ) unless grep( $vers_pkg eq $_, @pkgs );
+ $need_vers = 0 if $vers_pkg eq $pkg;
+
+ unless ( defined $vers{$vers_pkg} && length $vers{$vers_pkg} ) {
+ $vers{$vers_pkg} =
+ $self->_evaluate_version_line( $vers_sig, $vers_fullname, $line );
+ } else {
+ # Warn unless the user is using the "$VERSION = eval
+ # $VERSION" idiom (though there are probably other idioms
+ # that we should watch out for...)
+ warn <<"EOM" unless $line =~ /=\s*eval/;
+Package '$vers_pkg' already declared with version '$vers{$vers_pkg}',
+ignoring subsequent declaration on line $line_num.
+EOM
+ }
+
+ # first non-comment line in undeclared package main is VERSION
+ } elsif ( !exists($vers{main}) && $pkg eq 'main' && $vers_fullname ) {
+ $need_vers = 0;
+ my $v =
+ $self->_evaluate_version_line( $vers_sig, $vers_fullname, $line );
+ $vers{$pkg} = $v;
+ push( @pkgs, 'main' );
+
+ # first non-comment line in undeclared package defines package main
+ } elsif ( !exists($vers{main}) && $pkg eq 'main' && $line =~ /\w+/ ) {
+ $need_vers = 1;
+ $vers{main} = '';
+ push( @pkgs, 'main' );
+
+ # only keep if this is the first $VERSION seen
+ } elsif ( $vers_fullname && $need_vers ) {
+ $need_vers = 0;
+ my $v =
+ $self->_evaluate_version_line( $vers_sig, $vers_fullname, $line );
+
+
+ unless ( defined $vers{$pkg} && length $vers{$pkg} ) {
+ $vers{$pkg} = $v;
+ } else {
+ warn <<"EOM";
+Package '$pkg' already declared with version '$vers{$pkg}'
+ignoring new version '$v' on line $line_num.
+EOM
+ }
+
+ }
+
+ }
+
+ }
+
+ if ( $self->{collect_pod} && length($pod_data) ) {
+ $pod{$pod_sect} = $pod_data;
+ }
+
+ $self->{versions} = \%vers;
+ $self->{packages} = \@pkgs;
+ $self->{pod} = \%pod;
+ $self->{pod_headings} = \@pod;
+}
+
+{
+my $pn = 0;
+sub _evaluate_version_line {
+ my $self = shift;
+ my( $sigil, $var, $line ) = @_;
+
+ # Some of this code came from the ExtUtils:: hierarchy.
+
+ # We compile into $vsub because 'use version' would cause
+ # compiletime/runtime issues with local()
+ my $vsub;
+ $pn++; # everybody gets their own package
+ my $eval = qq{BEGIN { q# Hide from _packages_inside()
+ #; package Module::Metadata::_version::p$pn;
+ use Module::Metadata::Version;
+ no strict;
+
+ local $sigil$var;
+ \$$var=undef;
+ \$vsub = sub {
+ $line;
+ \$$var
+ };
+ }};
+
+ local $^W;
+ # Try to get the $VERSION
+ eval $eval;
+ # some modules say $VERSION = $Foo::Bar::VERSION, but Foo::Bar isn't
+ # installed, so we need to hunt in ./lib for it
+ if ( $@ =~ /Can't locate/ && -d 'lib' ) {
+ local @INC = ('lib',@INC);
+ eval $eval;
+ }
+ warn "Error evaling version line '$eval' in $self->{filename}: $@\n"
+ if $@;
+ (ref($vsub) eq 'CODE') or
+ die "failed to build version sub for $self->{filename}";
+ my $result = eval { $vsub->() };
+ die "Could not get version from $self->{filename} by executing:\n$eval\n\nThe fatal error was: $@\n"
+ if $@;
+
+ # Activestate apparently creates custom versions like '1.23_45_01', which
+ # cause M::B::Version to think it's an invalid alpha. So check for that
+ # and strip them
+ my $num_dots = () = $result =~ m{\.}g;
+ my $num_unders = () = $result =~ m{_}g;
+ if ( substr($result,0,1) ne 'v' && $num_dots < 2 && $num_unders > 1 ) {
+ $result =~ s{_}{}g;
+ }
+
+ # Bless it into our own version class
+ eval { $result = Module::Metadata::Version->new($result) };
+ die "Version '$result' from $self->{filename} does not appear to be valid:\n$eval\n\nThe fatal error was: $@\n"
+ if $@;
+
+ return $result;
+}
+}
+
+
+############################################################
+
+# accessors
+sub name { $_[0]->{module} }
+
+sub filename { $_[0]->{filename} }
+sub packages_inside { @{$_[0]->{packages}} }
+sub pod_inside { @{$_[0]->{pod_headings}} }
+sub contains_pod { $#{$_[0]->{pod_headings}} }
+
+sub version {
+ my $self = shift;
+ my $mod = shift || $self->{module};
+ my $vers;
+ if ( defined( $mod ) && length( $mod ) &&
+ exists( $self->{versions}{$mod} ) ) {
+ return $self->{versions}{$mod};
+ } else {
+ return undef;
+ }
+}
+
+sub pod {
+ my $self = shift;
+ my $sect = shift;
+ if ( defined( $sect ) && length( $sect ) &&
+ exists( $self->{pod}{$sect} ) ) {
+ return $self->{pod}{$sect};
+ } else {
+ return undef;
+ }
+}
+
+1;
+
+__END__
+
+=for :stopwords ModuleInfo
+
+=head1 NAME
+
+ModuleInfo - Gather package and POD information from a perl module file
+
+
+=head1 DESCRIPTION
+
+=over 4
+
+=item new_from_file($filename, collect_pod => 1)
+
+Construct a C<ModuleInfo> object given the path to a file. Takes an optional
+argument C<collect_pod> which is a boolean that determines whether
+POD data is collected and stored for reference. POD data is not
+collected by default. POD headings are always collected.
+
+=item new_from_module($module, collect_pod => 1, inc => \@dirs)
+
+Construct a C<ModuleInfo> object given a module or package name. In addition
+to accepting the C<collect_pod> argument as described above, this
+method accepts a C<inc> argument which is a reference to an array of
+of directories to search for the module. If none are given, the
+default is @INC.
+
+=item name()
+
+Returns the name of the package represented by this module. If there
+are more than one packages, it makes a best guess based on the
+filename. If it's a script (i.e. not a *.pm) the package name is
+'main'.
+
+=item version($package)
+
+Returns the version as defined by the $VERSION variable for the
+package as returned by the C<name> method if no arguments are
+given. If given the name of a package it will attempt to return the
+version of that package if it is specified in the file.
+
+=item filename()
+
+Returns the absolute path to the file.
+
+=item packages_inside()
+
+Returns a list of packages.
+
+=item pod_inside()
+
+Returns a list of POD sections.
+
+=item contains_pod()
+
+Returns true if there is any POD in the file.
+
+=item pod($section)
+
+Returns the POD data in the given section.
+
+=item find_module_by_name($module, \@dirs)
+
+Returns the path to a module given the module or package name. A list
+of directories can be passed in as an optional parameter, otherwise
+@INC is searched.
+
+Can be called as either an object or a class method.
+
+=item find_module_dir_by_name($module, \@dirs)
+
+Returns the entry in C<@dirs> (or C<@INC> by default) that contains
+the module C<$module>. A list of directories can be passed in as an
+optional parameter, otherwise @INC is searched.
+
+Can be called as either an object or a class method.
+
+=back
+
+
+=head1 AUTHOR
+
+Ken Williams <kwilliams@cpan.org>, Randy W. Sims <RandyS@ThePierianSpring.org>
+
+
+=head1 COPYRIGHT
+
+Copyright (c) 2001-2006 Ken Williams. All rights reserved.
+
+This library is free software; you can redistribute it and/or
+modify it under the same terms as Perl itself.
+
+
+=head1 SEE ALSO
+
+perl(1), L<Module::Metadata>(3)
+
+=cut
+
--- /dev/null
+package Module::Metadata::Version;
+use strict;
+
+# stolen from Module::Build::Version - this is perl licensed code,
+# copyright them.
+
+use vars qw($VERSION);
+$VERSION = 0.77;
+
+eval "use version $VERSION";
+if ($@) { # can't locate version files, use our own
+
+ # Avoid redefined warnings if an old version.pm was available
+ delete $version::{$_} foreach keys %version::;
+
+ # first we get the stub version module
+ my $version;
+ while (<DATA>) {
+ s/(\$VERSION)\s=\s\d+/\$VERSION = 0/;
+ $version .= $_ if $_;
+ last if /^1;$/;
+ }
+
+ # and now get the current version::vpp code
+ my $vpp;
+ while (<DATA>) {
+ s/(\$VERSION)\s=\s\d+/\$VERSION = 0/;
+ $vpp .= $_ if $_;
+ last if /^1;$/;
+ }
+
+ # but we eval them in reverse order since version depends on
+ # version::vpp to already exist
+ eval $vpp; die $@ if $@;
+ $INC{'version/vpp.pm'} = 'inside Module::Metadata::Version';
+ eval $version; die $@ if $@;
+ $INC{'version.pm'} = 'inside Module::Metadata::Version';
+}
+
+# now we can safely subclass version, installed or not
+use vars qw(@ISA);
+@ISA = qw(version);
+
+1;
+__DATA__
+# stub version module to make everything else happy
+package version;
+
+use 5.005_04;
+use strict;
+
+use vars qw(@ISA $VERSION $CLASS *declare *qv);
+
+$VERSION = 0.77;
+
+$CLASS = 'version';
+
+push @ISA, "version::vpp";
+local $^W;
+*version::qv = \&version::vpp::qv;
+*version::declare = \&version::vpp::declare;
+*version::_VERSION = \&version::vpp::_VERSION;
+if ($] > 5.009001 && $] <= 5.010000) {
+ no strict 'refs';
+ *{'version::stringify'} = \*version::vpp::stringify;
+ *{'version::(""'} = \*version::vpp::stringify;
+ *{'version::new'} = \*version::vpp::new;
+}
+
+# Preloaded methods go here.
+sub import {
+ no strict 'refs';
+ my ($class) = shift;
+
+ # Set up any derived class
+ unless ($class eq 'version') {
+ local $^W;
+ *{$class.'::declare'} = \&version::declare;
+ *{$class.'::qv'} = \&version::qv;
+ }
+
+ my %args;
+ if (@_) { # any remaining terms are arguments
+ map { $args{$_} = 1 } @_
+ }
+ else { # no parameters at all on use line
+ %args =
+ (
+ qv => 1,
+ 'UNIVERSAL::VERSION' => 1,
+ );
+ }
+
+ my $callpkg = caller();
+
+ if (exists($args{declare})) {
+ *{$callpkg."::declare"} =
+ sub {return $class->declare(shift) }
+ unless defined(&{$callpkg.'::declare'});
+ }
+
+ if (exists($args{qv})) {
+ *{$callpkg."::qv"} =
+ sub {return $class->qv(shift) }
+ unless defined(&{"$callpkg\::qv"});
+ }
+
+ if (exists($args{'UNIVERSAL::VERSION'})) {
+ local $^W;
+ *UNIVERSAL::VERSION = \&version::_VERSION;
+ }
+
+ if (exists($args{'VERSION'})) {
+ *{$callpkg."::VERSION"} = \&version::_VERSION;
+ }
+}
+
+1;
+
+# replace everything from here to the end with the current version/vpp.pm
+package version::vpp;
+use strict;
+
+use POSIX qw/locale_h/;
+use locale;
+use vars qw ($VERSION @ISA @REGEXS);
+$VERSION = '0.77';
+$VERSION = eval $VERSION;
+
+push @REGEXS, qr/
+ ^v? # optional leading 'v'
+ (\d*) # major revision not required
+ \. # requires at least one decimal
+ (?:(\d+)\.?){1,}
+ /x;
+
+use overload (
+ '""' => \&stringify,
+ '0+' => \&numify,
+ 'cmp' => \&vcmp,
+ '<=>' => \&vcmp,
+ 'bool' => \&vbool,
+ 'nomethod' => \&vnoop,
+);
+
+my $VERSION_MAX = 0x7FFFFFFF;
+
+eval "use warnings";
+if ($@) {
+ eval '
+ package warnings;
+ sub enabled {return $^W;}
+ 1;
+ ';
+}
+
+sub new
+{
+ my ($class, $value) = @_;
+ my $self = bless ({}, ref ($class) || $class);
+
+ if ( ref($value) && eval('$value->isa("version")') ) {
+ # Can copy the elements directly
+ $self->{version} = [ @{$value->{version} } ];
+ $self->{qv} = 1 if $value->{qv};
+ $self->{alpha} = 1 if $value->{alpha};
+ $self->{original} = ''.$value->{original};
+ return $self;
+ }
+
+ my $currlocale = setlocale(LC_ALL);
+
+ # if the current locale uses commas for decimal points, we
+ # just replace commas with decimal places, rather than changing
+ # locales
+ if ( localeconv()->{decimal_point} eq ',' ) {
+ $value =~ tr/,/./;
+ }
+
+ if ( not defined $value or $value =~ /^undef$/ ) {
+ # RT #19517 - special case for undef comparison
+ # or someone forgot to pass a value
+ push @{$self->{version}}, 0;
+ $self->{original} = "0";
+ return ($self);
+ }
+
+ if ( $#_ == 2 ) { # must be CVS-style
+ $value = 'v'.$_[2];
+ }
+
+ $value = _un_vstring($value);
+
+ # exponential notation
+ if ( $value =~ /\d+.?\d*e[-+]?\d+/ ) {
+ $value = sprintf("%.9f",$value);
+ $value =~ s/(0+)$//; # trim trailing zeros
+ }
+
+ # This is not very efficient, but it is morally equivalent
+ # to the XS code (as that is the reference implementation).
+ # See vutil/vutil.c for details
+ my $qv = 0;
+ my $alpha = 0;
+ my $width = 3;
+ my $saw_period = 0;
+ my $vinf = 0;
+ my ($start, $last, $pos, $s);
+ $s = 0;
+
+ while ( substr($value,$s,1) =~ /\s/ ) { # leading whitespace is OK
+ $s++;
+ }
+
+ if (substr($value,$s,1) eq 'v') {
+ $s++; # get past 'v'
+ $qv = 1; # force quoted version processing
+ }
+
+ $start = $last = $pos = $s;
+
+ # pre-scan the input string to check for decimals/underbars
+ while ( substr($value,$pos,1) =~ /[._\d,]/ ) {
+ if ( substr($value,$pos,1) eq '.' ) {
+ if ($alpha) {
+ Carp::croak("Invalid version format ".
+ "(underscores before decimal)");
+ }
+ $saw_period++;
+ $last = $pos;
+ }
+ elsif ( substr($value,$pos,1) eq '_' ) {
+ if ($alpha) {
+ require Carp;
+ Carp::croak("Invalid version format ".
+ "(multiple underscores)");
+ }
+ $alpha = 1;
+ $width = $pos - $last - 1; # natural width of sub-version
+ }
+ elsif ( substr($value,$pos,1) eq ','
+ and substr($value,$pos+1,1) =~ /[0-9]/ ) {
+ # looks like an unhandled locale
+ $saw_period++;
+ $last = $pos;
+ }
+ $pos++;
+ }
+
+ if ( $alpha && !$saw_period ) {
+ require Carp;
+ Carp::croak("Invalid version format ".
+ "(alpha without decimal)");
+ }
+
+ if ( $alpha && $saw_period && $width == 0 ) {
+ require Carp;
+ Carp::croak("Invalid version format ".
+ "(misplaced _ in number)");
+ }
+
+ if ( $saw_period > 1 ) {
+ $qv = 1; # force quoted version processing
+ }
+
+ $last = $pos;
+ $pos = $s;
+
+ if ( $qv ) {
+ $self->{qv} = 1;
+ }
+
+ if ( $alpha ) {
+ $self->{alpha} = 1;
+ }
+
+ if ( !$qv && $width < 3 ) {
+ $self->{width} = $width;
+ }
+
+ while ( substr($value,$pos,1) =~ /\d/ ) {
+ $pos++;
+ }
+
+ if ( substr($value,$pos,1) !~ /[a-z]/ ) { ### FIX THIS ###
+ my $rev;
+
+ while (1) {
+ $rev = 0;
+ {
+
+ # this is atoi() that delimits on underscores
+ my $end = $pos;
+ my $mult = 1;
+ my $orev;
+
+ # the following if() will only be true after the decimal
+ # point of a version originally created with a bare
+ # floating point number, i.e. not quoted in any way
+ if ( !$qv && $s > $start && $saw_period == 1 ) {
+ $mult *= 100;
+ while ( $s < $end ) {
+ $orev = $rev;
+ $rev += substr($value,$s,1) * $mult;
+ $mult /= 10;
+ if ( abs($orev) > abs($rev)
+ || abs($rev) > abs($VERSION_MAX) ) {
+ if ( warnings::enabled("overflow") ) {
+ require Carp;
+ Carp::carp("Integer overflow in version");
+ }
+ $s = $end - 1;
+ $rev = $VERSION_MAX;
+ }
+ $s++;
+ if ( substr($value,$s,1) eq '_' ) {
+ $s++;
+ }
+ }
+ }
+ else {
+ while (--$end >= $s) {
+ $orev = $rev;
+ $rev += substr($value,$end,1) * $mult;
+ $mult *= 10;
+ if ( abs($orev) > abs($rev)
+ || abs($rev) > abs($VERSION_MAX) ) {
+ if ( warnings::enabled("overflow") ) {
+ require Carp;
+ Carp::carp("Integer overflow in version");
+ }
+ $end = $s - 1;
+ $rev = $VERSION_MAX;
+ }
+ }
+ }
+ }
+
+ # Append revision
+ push @{$self->{version}}, $rev;
+ if ( substr($value,$pos,1) eq '.'
+ && substr($value,$pos+1,1) =~ /\d/ ) {
+ $s = ++$pos;
+ }
+ elsif ( substr($value,$pos,1) eq '_'
+ && substr($value,$pos+1,1) =~ /\d/ ) {
+ $s = ++$pos;
+ }
+ elsif ( substr($value,$pos,1) eq ','
+ && substr($value,$pos+1,1) =~ /\d/ ) {
+ $s = ++$pos;
+ }
+ elsif ( substr($value,$pos,1) =~ /\d/ ) {
+ $s = $pos;
+ }
+ else {
+ $s = $pos;
+ last;
+ }
+ if ( $qv ) {
+ while ( substr($value,$pos,1) =~ /\d/ ) {
+ $pos++;
+ }
+ }
+ else {
+ my $digits = 0;
+ while (substr($value,$pos,1) =~ /[\d_]/ && $digits < 3) {
+ if ( substr($value,$pos,1) ne '_' ) {
+ $digits++;
+ }
+ $pos++;
+ }
+ }
+ }
+ }
+ if ( $qv ) { # quoted versions always get at least three terms
+ my $len = scalar @{$self->{version}};
+ $len = 3 - $len;
+ while ($len-- > 0) {
+ push @{$self->{version}}, 0;
+ }
+ }
+
+ if ( substr($value,$pos) ) { # any remaining text
+ if ( warnings::enabled("misc") ) {
+ require Carp;
+ Carp::carp("Version string '$value' contains invalid data; ".
+ "ignoring: '".substr($value,$pos)."'");
+ }
+ }
+
+ # cache the original value for use when stringification
+ if ( $vinf ) {
+ $self->{vinf} = 1;
+ $self->{original} = 'v.Inf';
+ }
+ else {
+ $self->{original} = substr($value,0,$pos);
+ }
+
+ return ($self);
+}
+
+*parse = \&new;
+
+sub numify
+{
+ my ($self) = @_;
+ unless (_verify($self)) {
+ require Carp;
+ Carp::croak("Invalid version object");
+ }
+ my $width = $self->{width} || 3;
+ my $alpha = $self->{alpha} || "";
+ my $len = $#{$self->{version}};
+ my $digit = $self->{version}[0];
+ my $string = sprintf("%d.", $digit );
+
+ for ( my $i = 1 ; $i < $len ; $i++ ) {
+ $digit = $self->{version}[$i];
+ if ( $width < 3 ) {
+ my $denom = 10**(3-$width);
+ my $quot = int($digit/$denom);
+ my $rem = $digit - ($quot * $denom);
+ $string .= sprintf("%0".$width."d_%d", $quot, $rem);
+ }
+ else {
+ $string .= sprintf("%03d", $digit);
+ }
+ }
+
+ if ( $len > 0 ) {
+ $digit = $self->{version}[$len];
+ if ( $alpha && $width == 3 ) {
+ $string .= "_";
+ }
+ $string .= sprintf("%0".$width."d", $digit);
+ }
+ else # $len = 0
+ {
+ $string .= sprintf("000");
+ }
+
+ return $string;
+}
+
+sub normal
+{
+ my ($self) = @_;
+ unless (_verify($self)) {
+ require Carp;
+ Carp::croak("Invalid version object");
+ }
+ my $alpha = $self->{alpha} || "";
+ my $len = $#{$self->{version}};
+ my $digit = $self->{version}[0];
+ my $string = sprintf("v%d", $digit );
+
+ for ( my $i = 1 ; $i < $len ; $i++ ) {
+ $digit = $self->{version}[$i];
+ $string .= sprintf(".%d", $digit);
+ }
+
+ if ( $len > 0 ) {
+ $digit = $self->{version}[$len];
+ if ( $alpha ) {
+ $string .= sprintf("_%0d", $digit);
+ }
+ else {
+ $string .= sprintf(".%0d", $digit);
+ }
+ }
+
+ if ( $len <= 2 ) {
+ for ( $len = 2 - $len; $len != 0; $len-- ) {
+ $string .= sprintf(".%0d", 0);
+ }
+ }
+
+ return $string;
+}
+
+sub stringify
+{
+ my ($self) = @_;
+ unless (_verify($self)) {
+ require Carp;
+ Carp::croak("Invalid version object");
+ }
+ return exists $self->{original}
+ ? $self->{original}
+ : exists $self->{qv}
+ ? $self->normal
+ : $self->numify;
+}
+
+sub vcmp
+{
+ require UNIVERSAL;
+ my ($left,$right,$swap) = @_;
+ my $class = ref($left);
+ unless ( UNIVERSAL::isa($right, $class) ) {
+ $right = $class->new($right);
+ }
+
+ if ( $swap ) {
+ ($left, $right) = ($right, $left);
+ }
+ unless (_verify($left)) {
+ require Carp;
+ Carp::croak("Invalid version object");
+ }
+ unless (_verify($right)) {
+ require Carp;
+ Carp::croak("Invalid version object");
+ }
+ my $l = $#{$left->{version}};
+ my $r = $#{$right->{version}};
+ my $m = $l < $r ? $l : $r;
+ my $lalpha = $left->is_alpha;
+ my $ralpha = $right->is_alpha;
+ my $retval = 0;
+ my $i = 0;
+ while ( $i <= $m && $retval == 0 ) {
+ $retval = $left->{version}[$i] <=> $right->{version}[$i];
+ $i++;
+ }
+
+ # tiebreaker for alpha with identical terms
+ if ( $retval == 0
+ && $l == $r
+ && $left->{version}[$m] == $right->{version}[$m]
+ && ( $lalpha || $ralpha ) ) {
+
+ if ( $lalpha && !$ralpha ) {
+ $retval = -1;
+ }
+ elsif ( $ralpha && !$lalpha) {
+ $retval = +1;
+ }
+ }
+
+ # possible match except for trailing 0's
+ if ( $retval == 0 && $l != $r ) {
+ if ( $l < $r ) {
+ while ( $i <= $r && $retval == 0 ) {
+ if ( $right->{version}[$i] != 0 ) {
+ $retval = -1; # not a match after all
+ }
+ $i++;
+ }
+ }
+ else {
+ while ( $i <= $l && $retval == 0 ) {
+ if ( $left->{version}[$i] != 0 ) {
+ $retval = +1; # not a match after all
+ }
+ $i++;
+ }
+ }
+ }
+
+ return $retval;
+}
+
+sub vbool {
+ my ($self) = @_;
+ return vcmp($self,$self->new("0"),1);
+}
+
+sub vnoop {
+ require Carp;
+ Carp::croak("operation not supported with version object");
+}
+
+sub is_alpha {
+ my ($self) = @_;
+ return (exists $self->{alpha});
+}
+
+sub qv {
+ my $value = shift;
+ my $class = 'version';
+ if (@_) {
+ $class = ref($value) || $value;
+ $value = shift;
+ }
+
+ $value = _un_vstring($value);
+ $value = 'v'.$value unless $value =~ /(^v|\d+\.\d+\.\d)/;
+ my $version = $class->new($value);
+ return $version;
+}
+
+*declare = \&qv;
+
+sub is_qv {
+ my ($self) = @_;
+ return (exists $self->{qv});
+}
+
+
+sub _verify {
+ my ($self) = @_;
+ if ( ref($self)
+ && eval { exists $self->{version} }
+ && ref($self->{version}) eq 'ARRAY'
+ ) {
+ return 1;
+ }
+ else {
+ return 0;
+ }
+}
+
+sub _un_vstring {
+ my $value = shift;
+ # may be a v-string
+ if ( $] >= 5.006_000 && length($value) >= 3 && $value !~ /[._]/ ) {
+ my $tvalue = sprintf("v%vd",$value);
+ if ( $tvalue =~ /^v\d+\.\d+\.\d+$/ ) {
+ # must be a v-string
+ $value = $tvalue;
+ }
+ }
+ return $value;
+}
+
+sub _VERSION {
+ my ($obj, $req) = @_;
+ my $class = ref($obj) || $obj;
+
+ no strict 'refs';
+ if ( exists $INC{"$class.pm"} and not %{"$class\::"} and $] >= 5.008) {
+ # file but no package
+ require Carp;
+ Carp::croak( "$class defines neither package nor VERSION"
+ ."--version check failed");
+ }
+
+ my $version = eval "\$$class\::VERSION";
+ if ( defined $version ) {
+ local $^W if $] <= 5.008;
+ $version = version::vpp->new($version);
+ }
+
+ if ( defined $req ) {
+ unless ( defined $version ) {
+ require Carp;
+ my $msg = $] < 5.006
+ ? "$class version $req required--this is only version "
+ : "$class does not define \$$class\::VERSION"
+ ."--version check failed";
+
+ if ( $ENV{VERSION_DEBUG} ) {
+ Carp::confess($msg);
+ }
+ else {
+ Carp::croak($msg);
+ }
+ }
+
+ $req = version::vpp->new($req);
+
+ if ( $req > $version ) {
+ require Carp;
+ if ( $req->is_qv ) {
+ Carp::croak(
+ sprintf ("%s version %s required--".
+ "this is only version %s", $class,
+ $req->normal, $version->normal)
+ );
+ }
+ else {
+ Carp::croak(
+ sprintf ("%s version %s required--".
+ "this is only version %s", $class,
+ $req->stringify, $version->stringify)
+ );
+ }
+ }
+ }
+
+ return defined $version ? $version->stringify : undef;
+}
+
+1; #this line is important and will help the module return a true value
projects / p5sagit/Module-Metadata.git / commitdiff