Question

我已经开始使用Ruby on Rails为Siri Proxy Server制作一些插件。我对Ruby缺乏经验，但已经掌握了基础知识。

我做了什么：

################ Commands

 listen_for (/show a demo to (.*)/i) do |name|
   show_demo
   request_completed
 end

################ Actions

 def show_demo(name)
    say "Hi #{name}, let me do a quick demo for You."  
        say "For example if You tell me 'Turn on sidelight' I will turn the sidelights in Living room like now..."  
          system "/usr/local/bin/tdtool --on 2"  
        say "That was the sidelights, and now if like I can turn on the gallery for You, just tell me 'turn on gallery' like so...  "  
        system "/usr/local/bin/tdtool --on 3"
        say "This only part of things I can do after mod."  
        say "Now I will turn all devices off..."  
          system "/usr/local/bin/tdtool --off 3"  
          system "/usr/local/bin/tdtool --off 2"  
        say " Thank You #{name}, and goodbye."

 end

问题是，当我开始演示时，所有动作system "..."都会在Siri开始说话之前执行。我怎样才能推迟上述行动，及时将它们放在正确的位置，以便在我想要的单词后立即执行它们？

提前谢谢你。

Answer 1

问题是say不会等待Siri实际说出这些词，它只是将一个数据包发送到你的iDevice，然后继续。我能想到的最简单的方法是等待几秒钟，具体取决于文本的长度。所以首先我们需要一个方法来给我们等待的持续时间（以秒为单位）。我尝试使用OSX内置say命令并得到以下结果：

$ time say "For example if You tell me 'Turn on sidelight' I will turn the sidelights in Living room like now..."
say   0,17s user 0,05s system 3% cpu 6,290 total

$ time say "That was the sidelights, and now if like I can turn on the gallery for You, just tell me 'turn on gallery' like so...  "
say   0,17s user 0,06s system 2% cpu 8,055 total

$ time say "This only part of things I can do after mod."
say   0,13s user 0,04s system 5% cpu 2,996 total

所以这意味着我们有以下数据：

# Characters w/o whitespace   |   Seconds to execute
------------------------------+---------------------
                         77   |                6.290
                         87   |                8.055
                         34   |                2.996

这使我们每个角色的平均时间约为0.0875秒。您可能需要自己评估场景的平均时间并使用更多样本。这个函数将包装say，然后等到Siri说出文本：

def say_and_wait text, seconds_per_char=0.0875
  say text
  num_speakable_chars = text.gsub(/[^\w]/,'').size
  sleep num_speakable_chars * seconds_per_char
end

其中gsub(/[^\w]/,'')将从字符串中删除任何非单词字符。现在你可以用它来简单地说出来并等待它说出来：

say_and_wait "This is a test, just checking if 0.875 seconds per character are a good fit."

或者您也可以在特殊情况下覆盖持续时间：

say_and_wait "I will wait for ten seconds here...", 10

让我知道它是否适合你。

如何在siri代理插件中延迟'说'动作

1 个答案: