转储 YAML 时如何强制使用双引号? [英] How do I force double-quotes when dumping YAML?

问题描述

我有一个小脚本来自动化 YAML 文件中的一些事情.

I have a small script to automate some things in YAML files.

我阅读了原始的 YAML 文件并将其转换为哈希，然后 dump 修改后到文件中:

I read the original YAML file and convert it into a hash and then dump it to the file after modifying it:

File.open(output_file, "w") do |out|
  YAML.dump(modified_hash, out)
end

这很好用，但如果不需要，它会删除字符串周围的双引号.这是有效的 YAML，但看起来不太好.

That works fine, but it removes double-quotes around the string if they aren't needed. That's valid YAML, but it doesn't look very nice.

我可以在每个字符串的末尾添加一个空格来强制使用单引号，但我对此不太满意.有没有办法在字符串周围强制使用双引号?

I could add a space at the end of every string to force single-quotes, but I'm not too happy with that. Is there any way of forcing double-quotes around strings?

推荐答案

我找到了一个解决方案，虽然很奇怪，但有效.

I found a solution, it's weird, but it works.

为了强制单引号，我遍历了哈希并将"foobar"(注意空格)附加到每个值.使用YAML.dump后，我再次打开文件并将"foobar"替换为空字符串.

To force single quotes, I went through the hash and appended "foobar " (note the space) to every value. After using YAML.dump, I opened the file again and replaced "foobar " with empty string.

为了强制双引号，我发现附加 "foo \nbar" 可以完成这项工作.再次，我然后打开文件并将 "foo \\nbar" 替换为空字符串.奇怪，但有效.

To force double quotes, I found that appending "foo \nbar" does the job. Again, I then open the file and replace "foo \\nbar" with empty string. Weird, but works.

请注意，您可能希望选择比 foobar 更不可能使用的东西.

Note that you probably want to chose something less likely used than foobar.

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