File Coverage

blib/lib/ExtUtils/InstallPaths.pm

Criterion	Covered	Total	%
statement	136	180	75.5
branch	41	86	47.6
condition	13	28	46.4
subroutine	28	30	93.3
pod	6	6	100.0
total	224	330	67.8

package ExtUtils::InstallPaths;
$ExtUtils::InstallPaths::VERSION = '0.015';
use 5.008;
use strict;
use warnings;

use File::Spec ();
use Carp ();
use ExtUtils::Config 0.009;

my %complex_accessors = map { $_ => 1 } qw/prefix_relpaths install_sets/;
my %hash_accessors = map { $_ => 1 } qw/install_path install_base_relpaths original_prefix /;

my %defaults = (
	installdirs     => 'site',
	install_base    => undef,
	prefix          => undef,
	verbose         => 0,
	create_packlist => 1,
	dist_name       => undef,
	module_name     => undef,
	destdir         => undef,
	install_path    => sub { {} },
	install_sets    => \&_default_install_sets,
	original_prefix => \&_default_original_prefix,
	install_base_relpaths => \&_default_base_relpaths,
	prefix_relpaths => \&_default_prefix_relpaths,
);

sub _merge_shallow {
	my ($name, $filter) = @_;
	return sub {
		my ($override, $config) = @_;
		my $defaults = $defaults{$name}->($config);
		$filter->($_) for grep $filter, values %$override;
		return { %$defaults, %$override };
	}
}

sub _merge_deep {
	my ($name, $filter) = @_;
	return sub {
		my ($override, $config) = @_;
		my $defaults = $defaults{$name}->($config);
		my $pair_for = sub {
			my $key = shift;
			my %override = %{ $override->{$key} || {} };
			$filter && $filter->($_) for values %override;
			return $key => { %{ $defaults->{$key} }, %override };
		};
		return { map { $pair_for->($_) } keys %$defaults };
	}
}

my %allowed_installdir = map { $_ => 1 } qw/core site vendor/;
my $must_be_relative = sub { Carp::croak('Value must be a relative path') if File::Spec->file_name_is_absolute($_[0]) };
my %deep_filter = map { $_ => $must_be_relative } qw/install_base_relpaths prefix_relpaths/;
my %filter = (
	installdirs => sub {
		my $value = shift;
		$value = 'core', Carp::carp('Perhaps you meant installdirs to be "core" rather than "perl"?') if $value eq 'perl';
		Carp::croak('installdirs must be one of "core", "site", or "vendor"') if not $allowed_installdir{$value};
		return $value;
	},
	(map { $_ => _merge_shallow($_, $deep_filter{$_}) } qw/original_prefix install_base_relpaths/),
	(map { $_ => _merge_deep($_, $deep_filter{$_}) } qw/install_sets prefix_relpaths/),
);

sub new {
	my ($class, %args) = @_;
	my $config = $args{config} || ExtUtils::Config->new;
	if ($config->get('installsitescript') eq '') {
		$config = $config->but({ installsitescript => $config->get('installsitebin') });
	}
	my %self = (
		config => $config,
		map { $_ => exists $args{$_} ? $filter{$_} ? $filter{$_}->($args{$_}, $config) : $args{$_} : ref $defaults{$_} ? $defaults{$_}->($config) : $defaults{$_} } keys %defaults,
	);
	$self{module_name} ||= do { my $module_name = $self{dist_name}; $module_name =~ s/-/::/g; $module_name } if defined $self{dist_name};
	return bless \%self, $class;
}

for my $attribute (keys %defaults) {
	no strict qw/refs/;
	*{$attribute} = $hash_accessors{$attribute} ?
	sub {
		my ($self, $key) = @_;
		Carp::confess("$attribute needs key") if not defined $key;
		return $self->{$attribute}{$key};
	} :
	$complex_accessors{$attribute} ?
	sub {
		my ($self, $installdirs, $key) = @_;
		Carp::confess("$attribute needs installdir") if not defined $installdirs;
		Carp::confess("$attribute needs key") if not defined $key;
		return $self->{$attribute}{$installdirs}{$key};
	} :
	sub {
		my $self = shift;
		return $self->{$attribute};
	};
}

my @install_sets_keys = qw/lib arch bin script bindoc libdoc binhtml libhtml/;
my @install_sets_tail = qw/bin script man1dir man3dir html1dir html3dir/;
my %install_sets_values = (
	core   => [ qw/privlib archlib/, @install_sets_tail ],
	site   => [ map { "site$_" } qw/lib arch/, @install_sets_tail ],
	vendor => [ map { "vendor$_" } qw/lib arch/, @install_sets_tail ],
);

sub _default_install_sets {
	my $c = shift;

	my %ret;
	for my $installdir (qw/core site vendor/) {
		@{$ret{$installdir}}{@install_sets_keys} = map { $c->get("install$_") } @{ $install_sets_values{$installdir} };
	}
	return \%ret;
}

sub _default_base_relpaths {
	my $config = shift;
	return {
		lib     => ['lib', 'perl5'],
		arch    => ['lib', 'perl5', $config->get('archname')],
		bin     => ['bin'],
		script  => ['bin'],
		bindoc  => ['man', 'man1'],
		libdoc  => ['man', 'man3'],
		binhtml => ['html'],
		libhtml => ['html'],
	};
}

my %common_prefix_relpaths = (
	bin        => ['bin'],
	script     => ['bin'],
	bindoc     => ['man', 'man1'],
	libdoc     => ['man', 'man3'],
	binhtml    => ['html'],
	libhtml    => ['html'],
);

sub _default_prefix_relpaths {
	my $c = shift;

	my @libstyle = $c->get('installstyle') ?  File::Spec->splitdir($c->get('installstyle')) : qw(lib perl5);
	my $arch     = $c->get('archname');
	my $version  = $c->get('version');

	return {
		core => {
			lib        => [@libstyle],
			arch       => [@libstyle, $version, $arch],
			%common_prefix_relpaths,
		},
		vendor => {
			lib        => [@libstyle],
			arch       => [@libstyle, $version, $arch],
			%common_prefix_relpaths,
		},
		site => {
			lib        => [@libstyle, 'site_perl'],
			arch       => [@libstyle, 'site_perl', $version, $arch],
			%common_prefix_relpaths,
		},
	};
}

sub _default_original_prefix {
	my $c = shift;

	my %ret = (
		core   => $c->get('installprefixexp'),
		site   => $c->get('siteprefixexp'),
		vendor => $c->get('usevendorprefix') ? $c->get('vendorprefixexp') : '',
	);

	return \%ret;
}

sub _log_verbose {
	my $self = shift;
	print @_ if $self->verbose;
	return;
}

# Given a file type, will return true if the file type would normally
# be installed when neither install-base nor prefix has been set.
# I.e. it will be true only if the path is set from Config.pm or
# set explicitly by the user via install-path.
sub is_default_installable {
	my $self = shift;
	my $type = shift;
	my $installable = $self->install_destination($type) && ( $self->install_path($type) || $self->install_sets($self->installdirs, $type));
	return $installable ? 1 : 0;
}

sub _prefixify_default {
	my $self = shift;
	my $type = shift;
	my $rprefix = shift;

	my $default = $self->prefix_relpaths($self->installdirs, $type);
	if( !$default ) {
		$self->_log_verbose("    no default install location for type '$type', using prefix '$rprefix'.\n");
		return $rprefix;
	} else {
		return File::Spec->catdir(@{$default});
	}
}

# Translated from ExtUtils::MM_Unix::prefixify()
sub _prefixify_novms {
	my($self, $path, $sprefix, $type) = @_;

	my $rprefix = $self->prefix;
	$rprefix .= '/' if $sprefix =~ m{/$};

	$self->_log_verbose("  prefixify $path from $sprefix to $rprefix\n") if defined $path && length $path;

	if (not defined $path or length $path == 0 ) {
		$self->_log_verbose("  no path to prefixify, falling back to default.\n");
		return $self->_prefixify_default( $type, $rprefix );
	} elsif( !File::Spec->file_name_is_absolute($path) ) {
		$self->_log_verbose("    path is relative, not prefixifying.\n");
	} elsif( $path !~ s{^\Q$sprefix\E\b}{}s ) {
		$self->_log_verbose("    cannot prefixify, falling back to default.\n");
		return $self->_prefixify_default( $type, $rprefix );
	}

	$self->_log_verbose("    now $path in $rprefix\n");

	return $path;
}

sub _catprefix_vms {
	my ($self, $rprefix, $default) = @_;

	my ($rvol, $rdirs) = File::Spec->splitpath($rprefix);
	if ($rvol) {
		return File::Spec->catpath($rvol, File::Spec->catdir($rdirs, $default), '');
	}
	else {
		return File::Spec->catdir($rdirs, $default);
	}
}
sub _prefixify_vms {
	my($self, $path, $sprefix, $type) = @_;
	my $rprefix = $self->prefix;

	return '' unless defined $path;

	$self->_log_verbose("  prefixify $path from $sprefix to $rprefix\n");

	require VMS::Filespec;
	# Translate $(PERLPREFIX) to a real path.
	$rprefix = VMS::Filespec::vmspath($rprefix) if $rprefix;
	$sprefix = VMS::Filespec::vmspath($sprefix) if $sprefix;

	$self->_log_verbose("  rprefix translated to $rprefix\n  sprefix translated to $sprefix\n");

	if (length($path) == 0 ) {
		$self->_log_verbose("  no path to prefixify.\n")
	}
	elsif (!File::Spec->file_name_is_absolute($path)) {
		$self->_log_verbose("	path is relative, not prefixifying.\n");
	}
	elsif ($sprefix eq $rprefix) {
		$self->_log_verbose("  no new prefix.\n");
	}
	else {
		my ($path_vol, $path_dirs) = File::Spec->splitpath( $path );
		my $vms_prefix = $self->config->get('vms_prefix');
		if ($path_vol eq $vms_prefix.':') {
			$self->_log_verbose("  $vms_prefix: seen\n");

			$path_dirs =~ s{^\[}{\[.} unless $path_dirs =~ m{^\[\.};
			$path = $self->_catprefix_vms($rprefix, $path_dirs);
		}
		else {
			$self->_log_verbose("	cannot prefixify.\n");
			return File::Spec->catdir($self->prefix_relpaths($self->installdirs, $type));
		}
	}

	$self->_log_verbose("	now $path\n");

	return $path;
}

BEGIN { *_prefixify = $^O eq 'VMS' ? \&_prefixify_vms : \&_prefixify_novms }

# Translated from ExtUtils::MM_Any::init_INSTALL_from_PREFIX
sub prefix_relative {
	my ($self, $installdirs, $type) = @_;

	my $relpath = $self->install_sets($installdirs, $type);

	return $self->_prefixify($relpath, $self->original_prefix($installdirs), $type);
}

sub install_destination {
	my ($self, $type) = @_;

	return $self->install_path($type) if $self->install_path($type);

	if ( $self->install_base ) {
		my $relpath = $self->install_base_relpaths($type);
		return $relpath ? File::Spec->catdir($self->install_base, @{$relpath}) : undef;
	}

	if ( $self->prefix ) {
		my $relpath = $self->prefix_relative($self->installdirs, $type);
		return $relpath ? File::Spec->catdir($self->prefix, $relpath) : undef;
	}
	return $self->install_sets($self->installdirs, $type);
}

sub install_types {
	my $self = shift;

	my %types = ( %{ $self->{install_path} },
		  $self->install_base ?  %{ $self->{install_base_relpaths} }
		: $self->prefix ? %{ $self->{prefix_relpaths}{ $self->installdirs } }
		: %{ $self->{install_sets}{ $self->installdirs } });

	return sort keys %types;
}

sub install_map {
	my ($self, $dirs) = @_;

	my %localdir_for;
	if ($dirs && %$dirs) {
		%localdir_for = %$dirs;
	}
	else {
		foreach my $type ($self->install_types) {
			$localdir_for{$type} = File::Spec->catdir('blib', $type);
		}
	}

	my (%map, @skipping);
	foreach my $type (keys %localdir_for) {
		next if not -e $localdir_for{$type} and not $self->is_default_installable($type);
		if (my $dest = $self->install_destination($type)) {
			$map{$localdir_for{$type}} = $dest;
		} else {
			push @skipping, $type;
		}
	}

	warn "WARNING: Can't figure out install path for types: @skipping\nFiles will not be installed.\n" if @skipping;

	# Write the packlist into the same place as ExtUtils::MakeMaker.
	if ($self->create_packlist and my $module_name = $self->module_name) {
		my $archdir = $self->install_destination('arch');
		my @ext = split /::/, $module_name;
		$map{write} = File::Spec->catfile($archdir, 'auto', @ext, '.packlist');
	}

	# Handle destdir
	if (length(my $destdir = $self->destdir || '')) {
		foreach (keys %map) {
			# Need to remove volume from $map{$_} using splitpath, or else
			# we'll create something crazy like C:\Foo\Bar\E:\Baz\Quux
			# VMS will always have the file separate than the path.
			my ($volume, $path, $file) = File::Spec->splitpath( $map{$_}, 0 );

			# catdir needs a list of directories, or it will create something
			# crazy like volume:[Foo.Bar.volume.Baz.Quux]
			my @dirs = File::Spec->splitdir($path);

			# First merge the directories
			$path = File::Spec->catdir($destdir, @dirs);

			# Then put the file back on if there is one.
			if ($file ne '') {
			    $map{$_} = File::Spec->catfile($path, $file)
			} else {
			    $map{$_} = $path;
			}
		}
	}

	$map{read} = '';  # To keep ExtUtils::Install quiet

	return \%map;
}

1;

# ABSTRACT: Build.PL install path logic made easy

__END__