我如何在红宝石中做范围正则表达式，如awk/start/，/stop/ [英] how do i do a range regex in ruby like awk /start/,/stop/

问题描述

我想像这样做一个AWK风格的范围正则表达式:

I want to do an AWK-style range regex like this:

awk ' /hoststatus/,/\}/' file

在AWK中，这将在文件中打印两个模式之间的所有行:

In AWK this would print all the lines between the two patterns in a file:

hoststatus {
host_name=myhost
modified_attributes=0
check_command=check-host-alive
check_period=24x7
notification_period=workhours
check_interval=5.000000
retry_interval=1.000000
event_handler=
}

我该如何在Ruby中做到这一点?

How do I do that in Ruby?

奖金:您将如何在Python中做到这一点?

Bonus: How would you do it in Python?

这在AWK中确实非常强大，但是我是Ruby的新手，所以不确定您会怎么做.在Python中，我也找不到解决方案.

This is really powerful in AWK, but I'm new to Ruby, and not sure how you'd do it. In Python I was also unable to find a solution.

推荐答案

Ruby:

str =
"drdxrdx
hoststatus {
host_name=myhost
modified_attributes=0
check_command=check-host-alive
check_period=24x7
notification_period=workhours
check_interval=5.000000
retry_interval=1.000000
event_handler=
}"
str.each_line do |line|
  print line if line =~ /hoststatus/..line =~ /\}/
end

这是臭名昭著的触发器.

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