你如何在线上分割电子邮件？

I am retrieving emails using the Fetcher plugin for Rails. It is doing a fine job. But I am trying to split the body of the email on newlines but it appears that it is only one really long line.

我正在使用Rails的Fetcher插件检索电子邮件。它做得很好。但我试图在新行上拆分电子邮件的正文,但看起来它只是一个很长的行。

What is the best way (in Ruby) to split an email up into multiple lines?

将电子邮件分成多行的最佳方式(在Ruby中)是什么?

1 个解决方案

#1

Sounds like you need a word wrapping algorithm. Here is a short and clever way of word wrapping in Ruby that I found on the ruby-talk mailing list (link is to Google's cache because the site seems to be down):

听起来你需要一个自动换行算法。这是Ruby中一个简短而巧妙的自动换行方式,我在ruby-talk邮件列表中找到了(链接是谷歌的缓存,因为该网站似乎已关闭):

puts $<.read.gsub(/\t/,"     ").gsub(/.{1,50}(?:\s|\Z)/){($& + 
5.chr).gsub(/\n\005/,"\n").gsub(/\005/,"\n")}

Here's a slightly prettier version wrapped in a method:

这是一个包含在方法中的稍微漂亮的版本:

def wordwrap(str, columns=80)
  str.gsub(/\t/, "     ").gsub(/.{1,#{ columns }}(?:\s|\Z)/) do
    ($& + 5.chr).gsub(/\n\005/, "\n").gsub(/\005/, "\n")
  end
end