Ruby - 如何在读取文件时跳过/忽略特定行？

Question

在读取/解析文件(使用 Ruby)时忽略某些行的最佳方法是什么？

我正在尝试仅解析 Cucumber .feature 文件中的场景，并希望跳过不以 Scenario/Given/When/Then/And/But 开头的行。

下面的代码有效，但它很荒谬，所以我正在寻找一个聪明的解决方案:)

File.open(file).each_line do |line|
  line.chomp!
  next if line.empty? 
  next if line.include? "#"
  next if line.include? "Feature" 
  next if line.include? "In order" 
  next if line.include? "As a" 
  next if line.include? "I want"

Answer 1

你可以这样做:

a = ["#","Feature","In order","As a","I want"]   
File.open(file).each_line do |line|
  line.chomp!
  next if line.empty? || a.any? { |a| line =~ /#{a}/ }
end