Ruby 中的系统换行符 [英] System new line separator in Ruby

问题描述

如何确定 Ruby 中操作系统(LF、CR/LF 或其他)使用的换行符?

How can I determine new line separator used by OS (LF, CR/LF or other), in Ruby?

推荐答案

不确定是否有直接的解决方案来获取基于 OS 的换行符类型，但是有 $/ 变量保存输入记录分隔符".默认情况下，这将是\n".(此处的文档)

Not sure if there is a direct solution to get the type of newline based on OS, but there is the $/ variable that holds the "input record separator". By default this will be "\n". (Documentation here)

您可以检测操作系统，然后将 $/ 设置为正确"值.

You can detect the OS and then set $/ to the "correct" value.

检测操作系统:

puts RUBY_PLATFORM                  # => 'i386-linux'
require 'rbconfig'
puts Config::CONFIG['target_cpu']   # => 'i386'
puts Config::CONFIG['target_os']    # => 'linux'
puts Config::CONFIG['host_cpu']     # => 'i686'
puts Config::CONFIG['host_os']      # => 'linux-gnu'

还请记住，在读取文件时，它们可能会混合使用各种行分隔符 - 例如，如果在 Windows 和 Linux 中编辑了文本文件.因此，如果您正在处理文件，请不要只依赖操作系统行分隔符".

Also remember that when reading files, they could have a mix of various line separators - for example if a text file was edited in both Windows and Linux. Thus if you're processing files, do not depend on the "OS line seperator" exclusively.

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