Created
April 16, 2011 00:21
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URLのタイトルと短縮URLの取得
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#!/usr/bin/env perl | |
package App::UrlTitle; | |
use Mouse; | |
# reference http://code.google.com/intl/ja/apis/urlshortener/ | |
use LWP::UserAgent; | |
has ua => ( | |
is => 'rw', | |
isa => 'LWP::UserAgent', | |
lazy_build => 1, | |
); | |
sub _build_ua { | |
LWP::UserAgent->new( | |
agent => __PACKAGE__ . "/0.01", | |
timeout => 10, | |
); | |
} | |
has url => ( | |
is => 'rw', | |
isa => 'Str', | |
required => 1, | |
); | |
__PACKAGE__->meta->make_immutable; | |
no Mouse; | |
use Carp; | |
use Config::Pit; | |
use JSON::XS; | |
use HTTP::Request; | |
use LWP::UserAgent; | |
use Encode; | |
sub run { | |
my $self = shift; | |
my $long_url = $self->url; | |
my $shorten = $self->_get_shorten( $long_url ); | |
my $title = $self->_get_title($long_url); | |
print encode_utf8("$title $shorten"); | |
} | |
sub _get_title { | |
my ($self, $url) = @_; | |
my $res = $self->ua->get($url); | |
unless ($res->is_success) { | |
Carp::croak("Can't download $url\n"); | |
} | |
my $content = $res->decoded_content; | |
my $title_regexp = qr{<title[^>]*>([^<]*)</title>}ixms; | |
unless ($content =~ m{$title_regexp}ixms) { | |
Carp::croak("Can't extract title tag\n"); | |
} | |
my $title = $1; | |
Carp::croak("title is undefined\n") unless defined $title; | |
# remove spaces, tabs, newline | |
$title =~ s{\s\s+}{ }gxms; | |
return $title; | |
} | |
sub _get_shorten { | |
my ($self, $long_url) = @_; | |
my $config = pit_get("goo.gl", require =>{ | |
key => "Google API Key", | |
}); | |
my $posting_json = encode_json({ | |
key => $config->{key}, | |
longUrl => $long_url, | |
}); | |
my $api_url = 'https://www.googleapis.com/urlshortener/v1/url'; | |
my $req = HTTP::Request->new('POST', $api_url); | |
$req->header('Content-Type' => 'application/json'); | |
$req->content($posting_json); | |
my $res = $self->ua->request($req); | |
unless ($res->is_success) { | |
Carp::croak "Error ", $res->status_line; | |
} | |
my $shorten_info = decode_json($res->decoded_content); | |
return $shorten_info->{id}; | |
} | |
package main; | |
use strict; | |
use warnings; | |
my $url = shift or die "Usage $0 url\n"; | |
unless (caller) { | |
my $app = App::UrlTitle->new(url => $url); | |
$app->run; | |
} |
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