Ruby在文本文件中查找单词并对每个标题进行计数？

Question

下面的字符串位于一个文件中。这三个人都在同一个文件里。它可能会上升到头部N。

从下面的字符串中，我想要一个类似于

头-1 4未启动

为头-2开始

对于头-3 1已开始，2未启动

HEAD-1
========
NE      Server
ASDF    192.168.1.1     not started
ASDF1   192.168.1.1     not started
ASDF2   192.168.1.1     not started
ASDF3   192.168.1.1     not started

HEAD-2
========
NE      Server
ASDF    192.168.1.1     started
ASDF1   192.168.1.1     started

HEAD-3
========
NE      Server
ASDF    192.168.1.1     not started
ASDF1   192.168.1.1     started
ASDF3   192.168.1.1     not started

我只是在Ruby中尝试使用RegExp，通过将所有的头都放到一个数组中，然后将所有的NE项放到另一个2D数组中。

(.*\n{1})(==*\s+)(.\s+)

这是只匹配到NE服务器，我希望regex匹配多行。

我可能在regex方法上错了，然后我必须尝试用不同的方法。

提前谢谢。

Answer 1

使用正则表达式，string保存整个字符串。应该对正则表达式进行改进以用于生产，例如，只在正确的位置搜索已启动/未开始，而不是在整个字符串(包括服务器名称等)中进行搜索。

status = {}
string.scan(/^(HEAD-\d+)(.*?)(?:\n\n|\Z)/m).each do |match|
  name, text = match
  started = text.scan(/(?<!not )started/).size
  not_started = text.scan(/not started/).size
  status[name] = {
    started: started,
    not_started: not_started
  }
end

status
# => {"HEAD-1"=>{:started=>0, :not_started=>4}, "HEAD-2"=>{:started=>2, :not_started=>0}, "HEAD-3"=>{:started=>1, :not_started=>2}}

Answer 2

如果您可以假设输入将被格式化为您的示例(即每行有一个服务器，在自己的行上设置"HEAD“标题，等等)。您可以使用gets一次获得一行输入，然后将每一行与正则表达式(如^(\w+) (\d+\.\d+\.\d+\.\d+) (.+) )匹配。在这个正则表达式中，您只需检查最后一个组是否“未启动”。如果是的话，将一个添加到未启动服务器的计数中。如果没有，请在已启动服务器的计数中添加一个。如果regex不匹配，请检查它是否匹配^HEAD-(\d+)或类似的内容。

Answer 3

下面是我对CSV的不同尝试：

require 'csv' 

csv_string = <<_
HEAD-1
========
NE      Server
ASDF    192.168.1.1     not started
ASDF1   192.168.1.1     not started
ASDF2   192.168.1.1     not started
ASDF3   192.168.1.1     not started

HEAD-2
========
NE      Server
ASDF    192.168.1.1     started
ASDF1   192.168.1.1     started

HEAD-3
========
NE      Server
ASDF    192.168.1.1     not started
ASDF1   192.168.1.1     started
ASDF3   192.168.1.1     not started
_

options = {:col_sep => " " ,:skip_blanks => true ,:skip_lines => /[=]+/ }

csv_array = CSV.parse(csv_string,options)

csv_array.slice_before { |a| a.first[/head-\d+/i] }.to_a
# => [[["HEAD-1"],
#      ["NE", "Server"],
#      ["ASDF", "192.168.1.1", "not", "started"],
#      ["ASDF1", "192.168.1.1", "not", "started"],
#      ["ASDF2", "192.168.1.1", "not", "started"],
#      ["ASDF3", "192.168.1.1", "not", "started"]],
#     [["HEAD-2"],
#      ["NE", "Server"],
#      ["ASDF", "192.168.1.1", "started"],
#      ["ASDF1", "192.168.1.1", "started"]],
#     [["HEAD-3"],
#      ["NE", "Server"],
#      ["ASDF", "192.168.1.1", "not", "started"],
#      ["ASDF1", "192.168.1.1", "started"],
#      ["ASDF3", "192.168.1.1", "not", "started"]]]
report = csv_array.slice_before { |a| a.first[/head-\d+/i] }.map do|inner_ary|
  key,_ = inner_ary.shift(2)
  not_started,started = inner_ary.partition { |a| a.join(" ")[/\s+not\s+started$/] }
  key.push(["started #{started.size}","not started #{not_started.size}"])
end
Hash[report]
# => {"HEAD-1"=>["started 0", "not started 4"],
#     "HEAD-2"=>["started 2", "not started 0"],
#     "HEAD-3"=>["started 1", "not started 2"]}