add ability to generate commandline from parsed arg object

diff --git a/lib/MooseX/Runnable/Util/ArgParser.pm b/lib/MooseX/Runnable/Util/ArgParser.pm
index 1835103..833f983 100644 (file)
--- a/lib/MooseX/Runnable/Util/ArgParser.pm
+++ b/lib/MooseX/Runnable/Util/ArgParser.pm
@@ -4,6 +4,8 @@ use MooseX::Types::Moose qw(HashRef ArrayRef Str Bool);
 use MooseX::Types::Path::Class qw(Dir);
 use List::MoreUtils qw(first_index);
 
+use FindBin;
+
 use namespace::autoclean -also => ['_look_for_dash_something', '_delete_first'];
 
 has 'argv' => (
@@ -220,6 +222,34 @@ sub _build_app_args {
     return [@args];
 }
 
+# XXX: bad
+sub guess_cmdline {
+    my ($self, %opts) = @_;
+
+    confess 'Parser is help' if $self->is_help;
+
+    my @perl_flags = @{$opts{perl_flags} || []};
+    my @without_plugins = @{$opts{without_plugins} || []};
+
+    # invoke mx-run
+    my @cmdline = ($^X, @perl_flags, $FindBin::Bin.'/'.$FindBin::Script);
+    push @cmdline, map { "-I$_" } $self->include_paths;
+    push @cmdline, map { "-M$_" } $self->modules;
+
+  p:
+    for my $plugin (keys %{$self->plugins}){
+        for my $without (@without_plugins) {
+            next p if $without eq $plugin;
+        }
+        push @cmdline, "+$plugin", @{$self->plugins->{$plugin} || []};
+    }
+    push @cmdline, '--';
+    push @cmdline, $self->class_name;
+    push @cmdline, $self->app_args;
+
+    return @cmdline;
+}
+
 1;
 
 __END__

diff --git a/t/reverse-args.t b/t/reverse-args.t
new file mode 100644 (file)
index 0000000..4b0086e
--- /dev/null
+++ b/t/reverse-args.t
@@ -0,0 +1,23 @@
+use strict;
+use warnings;
+use Test::More tests => 1;
+
+use MooseX::Runnable::Util::ArgParser;
+
+my $str = '-MFoo -Ilib -MBar +Plugout +Plugin --with-args -- MyApp --with  args';
+
+my $args = MooseX::Runnable::Util::ArgParser->new(
+    argv => [split ' ', $str],
+);
+
+local $^X = '/path/to/perl';
+local $FindBin::Bin = '/path/to';
+local $FindBin::Script = 'mx-run';
+my @cmdline = $args->guess_cmdline(
+    perl_flags => ['--X--'],
+    without_plugins => ['Plugout'],
+);
+
+is join(' ', @cmdline),
+  "/path/to/perl --X-- /path/to/mx-run -Ilib -MFoo -MBar +Plugin --with-args -- MyApp --with args",
+  'cmdline reverses reasonably';