How to use awk to indent a source file based on simple rules?

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                          How can I indent source code based on a couple of simple rules?

As an example, I've used sed and ask to transform a selenium HTML source table to the following rspec like code.  How could I consistently indent lines between describe  and end ?  Ideally I would like to be able to add indenting to

    describe "Landing" do
    visit("http://some_url/url_reset ")
    visit("http://some_url/url_3_step_minimal_foundation ")
    # comments
    expect(css_vehicle1_auto_year) to be_visible
    end
    describe "Stage1" do
    wait_for_element_present(css_vehicle1_auto_year option_auto_year)
    select(auto_year, from: css_vehicle1_auto_year)
    ...
    end
    describe "Stage2" do
    fill_in(css_driver1_first_name, with: driver1_first_name)
    fill_in(css_driver1_last_name, with: driver1_last_name)
    ...
    submit(css_policy_form)
    expect(css_vehicle1_coverage_type) to be_visible
    end
    describe "Stage3" do
    wait_for_element_present(css_vehicle1_coverage_type)
    select(coverage_type, from: css_vehicle1_coverage_type)
    find(css_has_auto_insurance).click
    ...
    submit(css_policy_form)
    expect(css_quotes) to be_visible
    end

so I have

    describe "Landing" do
      visit("http://some_url/url_reset ")
      visit("http://some_url/url_3_step_minimal_foundation ")
      # comments
      expect(css_vehicle1_auto_year) to be_visible
    end
    describe "Stage1" do
      wait_for_element_present(css_vehicle1_auto_year option_auto_year)
      select(auto_year, from: css_vehicle1_auto_year)
      ...
    end
    describe "Stage2" do
      fill_in(css_driver1_first_name, with: driver1_first_name)
      fill_in(css_driver1_last_name, with: driver1_last_name)
      ...
      submit(css_policy_form)
      expect(css_vehicle1_coverage_type) to be_visible
    end
    describe "Stage3" do
      wait_for_element_present(css_vehicle1_coverage_type)
      select(coverage_type, from: css_vehicle1_coverage_type)
      find(css_has_auto_insurance).click
      ...
      submit(css_policy_form)
      expect(css_quotes) to be_visible
    end

The source code for the existing sed and awk's is at https://jsfiddle.net/4gbj5mh4/  but it's really messy and not what I am asking about.  I've got the hang of simple sed and awk's but not sure where to start with this one.

It would be great if it could also handle recursion.  Not essential for me but the generalization is probably useful to others using this question, i.e.

    describe "a" do
    describe "b" do
    stuff
    more stuff
    end
    end

to

    describe "a" do
      describe "b" do
        stuff
        more stuff
      end
    end

btw I am also doing this custom conversion partly because I've used variables as page objects in selenium and they bork the built-in export to rspec.

                        
Asked by Michael Durrant (43563 rep)
Aug 29, 2015, 01:35 AM
Last activity: Mar 18, 2022, 09:17 AM
How to use awk to indent a source file based on simple rules?

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