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package Carton::Environment;
use strict;
use Carton::CPANfile;
use Carton::Snapshot;
use Carton::Error;
use Carton::Tree;
use Path::Tiny;
use Class::Tiny {
cpanfile => undef,
snapshot => sub { $_[0]->_build_snapshot },
install_path => sub { $_[0]->_build_install_path },
vendor_cache => sub { $_[0]->_build_vendor_cache },
tree => sub { $_[0]->_build_tree },
};
sub _build_snapshot {
my $self = shift;
Carton::Snapshot->new(path => $self->cpanfile . ".snapshot");
}
sub _build_install_path {
my $self = shift;
if ($ENV{PERL_CARTON_PATH}) {
return Path::Tiny->new($ENV{PERL_CARTON_PATH});
} else {
return $self->cpanfile->path->parent->child("local");
}
}
sub _build_vendor_cache {
my $self = shift;
Path::Tiny->new($self->install_path->dirname . "/vendor/cache");
}
sub _build_tree {
my $self = shift;
Carton::Tree->new(cpanfile => $self->cpanfile, snapshot => $self->snapshot);
}
sub vendor_bin {
my $self = shift;
$self->vendor_cache->parent->child('bin');
}
sub build_with {
my($class, $cpanfile) = @_;
$cpanfile = Path::Tiny->new($cpanfile)->absolute;
if ($cpanfile->is_file) {
return $class->new(cpanfile => Carton::CPANfile->new(path => $cpanfile));
} else {
Carton::Error::CPANfileNotFound->throw(error => "Can't locate cpanfile: $cpanfile");
}
}
sub build {
my($class, $cpanfile_path, $install_path) = @_;
my $self = $class->new;
$cpanfile_path &&= Path::Tiny->new($cpanfile_path)->absolute;
my $cpanfile = $self->locate_cpanfile($cpanfile_path || $ENV{PERL_CARTON_CPANFILE});
if ($cpanfile && $cpanfile->is_file) {
$self->cpanfile( Carton::CPANfile->new(path => $cpanfile) );
} else {
Carton::Error::CPANfileNotFound->throw(error => "Can't locate cpanfile: (@{[ $cpanfile_path || 'cpanfile' ]})");
}
$self->install_path( Path::Tiny->new($install_path)->absolute ) if $install_path;
$self;
}
sub locate_cpanfile {
my($self, $path) = @_;
if ($path) {
return Path::Tiny->new($path)->absolute;
}
my $current = Path::Tiny->cwd;
my $previous = '';
until ($current eq '/' or $current eq $previous) {
# TODO support PERL_CARTON_CPANFILE
my $try = $current->child('cpanfile');
if ($try->is_file) {
return $try->absolute;
}
($previous, $current) = ($current, $current->parent);
}
return;
}
1;
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