雷神&YAML输出为二进制? [英] Thor & YAML outputting as binary?

问题描述

我正在使用 Thor 并尝试将 YAML 输出到文件.在 irb 中，我得到了我的期望.YAML 格式的纯文本.但是当 Thor 中某个方法的一部分时，它的输出就不同了……

I'm using Thor and trying to output YAML to a file. In irb I get what I expect. Plain text in YAML format. But when part of a method in Thor, its output is different...

class Foo < Thor
  include Thor::Actions

  desc "bar", "test"
  def set
    test = {"name" => "Xavier", "age" => 30}
    puts test
    # {"name"=>"Xavier", "age"=>30}
    puts test.to_yaml
    # !binary "bmFtZQ==": !binary |-
    #   WGF2aWVy
    # !binary "YWdl": 30
    File.open("data/config.yml", "w") {|f| f.write(test.to_yaml) }
  end
end

有什么想法吗?

推荐答案

所有 Ruby 1.9 字符串都附加了编码.

All Ruby 1.9 strings have an encoding attached to them.

YAML 将一些非 UTF8 字符串编码为二进制，即使它们看起来很无辜，也没有任何高位字符.您可能认为您的代码始终使用 UTF8，但内置函数可以返回非 UTF8 字符串(例如文件路径例程).

YAML encodes some non-UTF8 strings as binary, even when they look innocent, without any high-bit characters. You might think that your code is always using UTF8, but builtins can return non-UTF8 strings (ex File path routines).

为避免二进制编码，请在调用 to_yaml 之前确保所有字符串编码均为 UTF-8.使用 force_encoding("UTF-8") 方法更改编码.

To avoid binary encoding, make sure all your strings encodings are UTF-8 before calling to_yaml. Change the encoding with force_encoding("UTF-8") method.

例如，这就是我将选项哈希编码为 yaml 的方式:

For example, this is how I encode my options hash into yaml:

options = {
    :port => 26000,
    :rackup => File.expand_path(File.join(File.dirname(__FILE__), "../sveg.rb"))
}
utf8_options = {}
options.each_pair { |k,v| utf8_options[k] = ((v.is_a? String) ? v.force_encoding("UTF-8") : v)}
puts utf8_options.to_yaml

这里是 yaml 将简单字符串编码为二进制的示例

Here is an example of yaml encoding simple strings as binary

>> x = "test"
=> "test"
>> x.encoding
=> #<Encoding:UTF-8>
>> x.to_yaml
=> "--- test
...
"
>> x.force_encoding "ASCII-8BIT"
=> "test"
>> x.to_yaml
=> "--- !binary |-
  dGVzdA==
"

这篇关于雷神&YAML输出为二进制?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！