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#! /usr/bin/env ruby
#
# script to see what PRs, if any, are operating on a file that I care about.
# yes, this is a smell. we shouldn't have long-lived PRs, but alas here we are.
#
require "bundler/inline"
gemfile do
source "https://rubygems.org/"
gem "git_diff"
end
require "git_diff"
require "set"
gh = `which gh 2> /dev/null`.strip
if gh.empty?
puts "Please install the github CLI at https://cli.github.com/"
exit 1
end
def get command
puts "> #{command}"
output = `#{command}`
output
end
def get_paths_from_a_diff(diff)
re = /^(?:---|\+\+\+) [ab]\/(.*)$/
diff.split("\n").grep(re).map {|line| line.sub(re, '\1') }.uniq
end
prs = get("gh pr list").split("\n")
paths_to_prs = Hash.new { |h,k| h[k] = Set.new }
prs.each do |pr|
pr_number = pr.split(/\s+/).first
diff = get("gh pr diff #{pr_number}")
diff_data = GitDiff::from_string(diff)
relevant_files = diff_data.files.map(&:b_path)
if relevant_files.length > 0
puts "PR #{pr_number}:"
relevant_files.sort.each do |file|
puts "- #{file}"
end
end
relevant_files.each do |file|
paths_to_prs[file].add(pr_number)
end
end
puts "\n---"
paths_to_prs.keys.sort.each do |key|
puts "#{key}:"
paths_to_prs[key].entries.sort.each do |value|
puts "- #{value}"
end
end
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