Ruby REGEX split, any issues with the code

Bhanuprasad 发表于 Dev

rupeshj

I am a rookie in Regex for Ruby. I read some tutorials and evaluated a piece of code. Please let me know if I can do it in a better way.

Here is my text which needs to be split at {iwsection(*)} and {{usersection}}

    t='{{iwsection(1)}}
    This has some sample text 1 - line 1
    This has some sample text 1 - line 2
    {{iwsection(2)}}
    This has some sample text 2
    {{iwsection(3)}}
    This has some sample text 3
    {{usersection}}
    This is a user section.
    This has some sample text
    This has some sample text'

Here is the ruby regex code I was able to manage.

    t.split(/^({{[i|u][wsection]\w*...}})/)

Thank You.

The Desired Output : A array as,

    [ '{{iwsection(1)}}', 'This has some sample text 1\nThis has some sample text 1 - line 2',
    '{{iwsection(2)}}', 'This has some sample text 2',
    '{{iwsection(3)}}', 'This has some sample text 3',
    '{{usersection}}', 'This is a user section\nThis has some sample text\nThis has some sample text.']

With this I will build a Hash,

    { 
    '{{iwsection(1)}}' => 'This has some sample text 1\nThis has some sample text 1 - line 2',
    '{{iwsection(2)}}' => 'This has some sample text 2',
    '{{iwsection(3)}}' => 'This has some sample text 3',
    '{{usersection}}' => 'This is a user section\nThis has some sample text\nThis has some sample text.'
    }

Edit: .....

The code.

    section_array = text.chomp.split(/\r\n|\n/).inject([]) do |a, v|
    if v =~ /{{.*}}/
      a << [v.gsub(/^{{|}}$/, ""), []]
    else
      a.last[1] << v
    end
    a
    end.select{ |k, v| (k.start_with?("iwsection") || k.start_with?("usersection")) }.map{ |k, v| ["{{#{k}}}", v.join("\n")] }

konsolebox

Using String#scan:

> t.scan(/{{([^}]*)}}\r?\n(.*?)\r?(?=\n{{|\n?$)/)
=> [["iwsection(1)", "This has some sample text 1"], ["iwsection(2)", "This has some sample text 2"], ["iwsection(3)", "This has some sample text 3"], ["usersection", "This is a user section."]]

> h = t.scan(/{{([^}]*)}}\r?\n(.*?)\r?(?=\n{{|\n?$)/).to_h
=> {"iwsection(1)"=>"This has some sample text 1", "iwsection(2)"=>"This has some sample text 2", "iwsection(3)"=>"This has some sample text 3", "usersection"=>"This is a user section."}

> h.values
=> ["This has some sample text 1", "This has some sample text 2", "This has some sample text 3", "This is a user section."]

> h.keys
=> ["iwsection(1)", "iwsection(2)", "iwsection(3)", "usersection"]

> h["usersection"]
=> "This is a user section."

Update:

#!/usr/bin/env ruby
t = "{{iwsection(1)}}\nThis has some sample text 1 - line 1\nThis has some sample text 1 - line 2\n{{iwsection(2)}}\nThis has some sample text 2\n{{iwsection(3)}}\nThis has some sample text 3\nThis has some sample text\nThis has some sample text\n{{usersection}}\nThis is a user section.\nThis has some sample text\nThis has some sample text"
h = t.chomp.split(/\n/).inject([]) do |a, v|
  if v =~ /{{.*}}/
    a << [v.gsub(/^{{|}}$/, ""), []]
  else
    a.last[1] << v
  end
  a
end.select{ |k, v| k.start_with? "iwsection" or k === "usersection" }.map{ |k, v| [k, v.join("\n")] }.to_h
puts h.inspect

Output:

{"iwsection(1)"=>"This has some sample text 1 - line 1\nThis has some sample text 1 - line 2", "iwsection(2)"=>"This has some sample text 2", "iwsection(3)"=>"This has some sample text 3\nThis has some sample text\nThis has some sample text", "usersection"=>"This is a user section.\nThis has some sample text\nThis has some sample text"}

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