Script to update email address in GitHub Rust repositories containing Cargo.toml

update-rust-github-email.rb

#! /usr/bin/env ruby

require 'json'
require "net/http"
require "uri"
require 'fileutils'

USERNAME = "dylanmckay"
OLD_EMAIL = "[email protected]"
NEW_EMAIL = "[email protected]"

TEMP_DIR = "/tmp/update-email-github-#{USERNAME}"

def repositories_for(username:, page:)
  uri = URI.parse("https://api.github.com/users/#{username}/repos?page=#{page}")
  http = Net::HTTP.new(uri.host, uri.port)
  http.use_ssl = true
  response = http.request(Net::HTTP::Get.new(uri.request_uri))
  JSON.parse(response.body)
end

def update_email_in_repository(repository)
  FileUtils.mkdir_p(TEMP_DIR)
  Dir.chdir(TEMP_DIR) do
    repo_url = repository["ssh_url"]
    repo_name = repository["name"]
    default_branch = repository["default_branch"]

    system("git clone #{repo_url}") unless Dir.exists?(repo_name)

    Dir.chdir(File.join(TEMP_DIR, repo_name)) do
      system("find . -exec sed -i'' 's/#{OLD_EMAIL}/#{NEW_EMAIL}/g' '{}' \\; 2>/dev/null") || (raise "failed to replace old email occurrences")

      dirty_worktree = system("git diff-files --quiet")

      if dirty_worktree
        system("git add --all") || (raise "failed to add files to index")
        system("git commit -m 'Update my email address'")
        diff = `git show`

        $stderr.puts diff

        $stderr.puts "DOES THIS LOOK GOOD? (y/n)"
        resp = $stdin.gets.chomp
        if resp == 'Y' || resp == 'y'
          system("git push origin #{default_branch}") || (raise "failed to push")
        else
          break
        end
      else
        $stderr.puts "Repository '#{repo_name}' does not mention old email address"
      end
    end
  end
end

page_number = 1
loop do
  repositories = repositories_for(:username => 'dylanmckay', :page => page_number)
  break if repositories.size == 0
  rust_repositories = repositories.select { |repo| repo["language"] == "Rust" }

  rust_repositories.each do |repo|
    update_email_in_repository(repo)
  end

  page_number += 1
end