Add bin/user_agent_parser script.

bin/user_agent_parser

@@ -0,0 +1,56 @@
+#!/usr/bin/env ruby
+
+$: << File.expand_path('../../lib', File.readlink(__FILE__))
+
+require 'optparse'
+
+require 'user_agent_parser'
+require 'user_agent_parser/cli'
+
+options = {}
+
+optparse = OptionParser.new do|opts|
+  opts.on('--name', 'Print name only') do
+    options[:name] = true
+  end
+
+  opts.on('--version', 'Print version only') do
+    options[:version] = true
+  end
+
+  opts.on('--major', 'Print major version only') do
+    options[:major] = true
+  end
+
+  opts.on('--minor', 'Print minor version only') do
+    options[:minor] = true
+  end
+
+  opts.on('--os', 'Print operating system only') do
+    options[:os] = true
+  end
+
+  opts.on('--format format',
+          'Print output in specified format. The available formatters are:',
+          ' - %n: name',
+          ' - %v: version',
+          ' - %M: major version',
+          ' - %m: minor version',
+          ' - %o: operating system'
+         ) do |format|
+    options[:format] = format
+  end
+
+  opts.on('-h', '--help', 'Display this screen') do
+    puts opts
+    exit
+  end
+end
+
+optparse.parse!
+
+parser = UserAgentParser::Parser.new
+
+ARGF.each do |line|
+  puts UserAgentParser::Cli.new(parser.parse(line), options).run!
+end

lib/user_agent_parser/cli.rb

@@ -0,0 +1,54 @@
+module UserAgentParser
+  class Cli
+    def initialize(user_agent, options = {})
+      @user_agent = user_agent
+      @options = options
+    end
+
+    def run!
+      if @options[:name]
+        @user_agent.name
+      elsif @options[:version]
+        with_version do |version|
+          version.to_s
+        end
+      elsif @options[:major]
+        major
+      elsif @options[:minor]
+        minor
+      elsif @options[:os]
+        @user_agent.os.to_s
+      elsif format = @options[:format]
+        format.gsub('%n', @user_agent.name).
+          gsub('%v', version.to_s).
+          gsub('%M', major.to_s).
+          gsub('%m', minor.to_s).
+          gsub('%o', @user_agent.os.to_s)
+      else
+        @user_agent.to_s
+      end
+    end
+
+    private
+
+    def major
+      with_version do |version|
+        version.major
+      end
+    end
+
+    def minor
+      with_version do |version|
+        version.minor
+      end
+    end
+
+    def version
+      @version ||= @user_agent.version
+    end
+
+    def with_version(&block)
+      block.call(version) if version
+    end
+  end
+end

spec/cli_spec.rb

@@ -0,0 +1,101 @@
+require File.expand_path(File.dirname(__FILE__) + '/spec_helper')
+require 'user_agent_parser/cli'
+
+describe UserAgentParser::Cli do
+  let(:cli) { UserAgentParser::Cli.new(user_agent, options) }
+  let(:options) { {} }
+  let(:parser) { UserAgentParser::Parser.new }
+  let(:user_agent) {
+    parser.parse('Mozilla/5.0 (iPad; CPU OS 6_0_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10A523 Safari/8536.25')
+  }
+
+  it 'prints name and version when no options' do
+    cli.run!.must_equal('Mobile Safari 6.0')
+  end
+
+  describe 'invalid version' do
+    let(:user_agent) {
+      parser.parse('Mozilla/5.0 (iPad; CPU OS like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/XYZ Mobile/10A523 Safari/8536.25')
+    }
+
+    describe '--version' do
+      let(:options) { { :version => true } }
+
+      it 'returns nil' do
+        cli.run!.must_be_nil
+      end
+    end
+
+    describe '--major' do
+      let(:options) { { :major => true } }
+
+      it 'returns nil' do
+        cli.run!.must_be_nil
+      end
+    end
+
+    describe '--minor' do
+      let(:options) { { :minor => true } }
+
+      it 'returns nil' do
+        cli.run!.must_be_nil
+      end
+    end
+
+    describe '--format' do
+      let(:options) { { :format => '%n|%v|%M|%m|%o' } }
+
+      it 'returns string without versions' do
+        cli.run!.must_equal('Mobile Safari||||Other')
+      end
+    end
+  end
+
+  describe '--name' do
+    let(:options) { { :name => true } }
+
+    it 'returns name only' do
+      cli.run!.must_equal('Mobile Safari')
+    end
+  end
+
+  describe '--version' do
+    let(:options) { { :version => true } }
+
+    it 'returns version only' do
+      cli.run!.must_equal('6.0')
+    end
+  end
+
+  describe '--major' do
+    let(:options) { { :major => true } }
+
+    it 'returns major version only' do
+      cli.run!.must_equal('6')
+    end
+  end
+
+  describe '--minor' do
+    let(:options) { { :minor => true } }
+
+    it 'returns minor version only' do
+      cli.run!.must_equal('0')
+    end
+  end
+
+  describe '--os' do
+    let(:options) { { :os => true } }
+
+    it 'returns operating system only' do
+      cli.run!.must_equal('iOS 6.0.1')
+    end
+  end
+
+  describe '--format' do
+    let(:options) { { :format => '%n|%v|%M|%m|%o' } }
+
+    it 'return string with correct replacements' do
+      cli.run!.must_equal('Mobile Safari|6.0|6|0|iOS 6.0.1')
+    end
+  end
+end

user_agent_parser.gemspec

@@ -9,7 +9,7 @@ Gem::Specification.new do |gem|
   gem.description = gem.summary
   gem.license     = "MIT"
 
-  gem.files = %x{ git ls-files }.split("\n").select { |d| d =~ %r{^(MIT-LICENSE|Readme.md|lib/)} } + ['vendor/ua-parser/regexes.yaml']
+  gem.files = %x{ git ls-files }.split("\n").select { |d| d =~ %r{^(MIT-LICENSE|Readme.md|lib|bin/)} } + ['vendor/ua-parser/regexes.yaml']
 
   gem.required_ruby_version = '>= 1.8.7'
 end