Find equal or unequal values between arbitrary trees?

[bensheldon]

My use-case is to identify the keys of all the values that have changed between the base language of my current git branch and the base language of the main git branch. This would allow me to export a list of the key/values that have been edited/modified in my feature branch, so that I can re-translate them. The closest I can imagine is:

i18n-tasks eq-values config/locales/en.yml $(git show main:config/locales/en.yml | i18n-tasks tree-subtract config/locales/en.yml

...where eq-values is my imagined idea for eq-base but with the base option being configurable.

I also imagine I could write this as a custom plugin/task for myself, but was befuddled by how to do that too. Thanks for any help 🙇🏻

[bensheldon]

Here's an attempt at patching it in. It works! 🎉 ...though the entire workflow is rather verbose 🤔

# config/i18n_tasks_tree_eq.rb
# Load in config/i18n-tasks.yml: <% require './config/i18n_tasks_tree_eq' %>
# Get changed en.yml values between this branch and the main branch
<<~SHELL
  bin/i18n-tasks tree-subtract -S -f yaml \
    "$(cat config/locales/en.yml | bin/i18n-tasks tree-convert --from yaml --to json)" \
    "$(bin/i18n-tasks tree-eq-values -S -f json \
      "$(cat config/locales/en.yml | bin/i18n-tasks tree-convert --from yaml --to json)" \
      "$(git show main:config/locales/en.yml | bin/i18n-tasks tree-convert --from yaml --to json)")"
SHELL

I18n::Tasks::Data::Tree::Siblings.class_eval do
  def intersect_by_value(other)
    intersect_keys(other, root: true) { |_key, node, other_node| node.value == other_node.value }
  end
end

module I18nTaskTreeEqExt
  include ::I18n::Tasks::Command::Collection

  cmd :tree_eq_values,
    pos: "[[tree] [tree] ... (or stdin)]",
    desc: "keys with equal values in both trees", # t("i18n_tasks.cmd.desc.tree_eq_values"),
    args: %i[data_format nostdin]
  def tree_eq_values(opt = {})
    forests = forests_stdin_and_pos! opt, 2
    forest = forests.reduce(:intersect_by_value) || empty_forest
    print_forest forest, opt
  end
end
I18n::Tasks.add_commands I18nTaskTreeEqExt