How can I access Closure JavaScript minifier using Perl's LWP::UserAgent? - perl

Question

I'm trying to get Code Closure to work, but unfortunately, there's always an error thrown.
Here's the code:
use LWP::UserAgent;
use HTTP::Request::Common;
use HTTP::Response;
my $name = 'test.js';
my $agent = new LWP::UserAgent();
$agent->agent("curl/7.21.0 (x86_64-pc-linux-gnu) libcurl/7.21.0 OpenSSL/0.9.8o zlib/1.2.3.4 libidn/1.18");
$res = $agent->request(POST 'http://closure-compiler.appspot.com/compile',
content_type => 'multipart/form-data',
content => [
output_info => 'compiled_code',
compilation_level => 'SIMPLE_OPTIMIZATIONS',
output_format => 'text',
js_code => [File::Spec->rel2abs($name)]
]);
if ($res->is_success) {
$minified = $res->decoded_content;
print $minified;die;
}
I get the following error:
Error(13): No output information to produce, yet compilation was requested.
Here's the api reference I used:
http://code.google.com/intl/de-DE/closure/compiler/docs/api-ref.html
Hope anyone knows what's going wrong here. Thanks.

Answer 1

#!/usr/bin/perl
use strict; use warnings;
use File::Slurp;
use LWP::UserAgent;
my $agent = LWP::UserAgent->new;
my $script = 'test.js';
my $response = $agent->post(
'http://closure-compiler.appspot.com/compile',
content_type => 'application/x-www-form-urlencoded',
content => [
compilation_level => 'SIMPLE_OPTIMIZATIONS',
output_info => 'compiled_code',
output_format => 'text',
js_code => scalar read_file($script),
],
);
if ($response->is_success) {
my $minified = $response->decoded_content;
print $minified;
}
Output:
C:\Temp> cat test.js
// ADD YOUR CODE HERE
function hello(name) {
alert('Hello, ' + name);
}
hello('New user');
C:\Temp> t
function hello(a){alert("Hello, "+a)}hello("New user");

Answer 2

Pass as js_code the actual code to compile. Try (removing the form-data content_type header):
use File::Slurp "read_file";
...
js_code => scalar( read_file($name) ),
I see you are trying to use POST's file upload feature; what in the API documentation do you see that makes you think that would work? If there is something there, I don't see it.