Git post-checkout hook demoing how one might achieve branch-specific Xcode breakpoints

post-checkout

#!/usr/bin/env ruby

previous_sha, current_sha, branch_checkout, _ = *ARGV

exit if branch_checkout == 0 || previous_sha == current_sha

begin
  require 'pathname'
  require 'fileutils'
  
  root = Pathname.new(%x( git rev-parse --show-toplevel ).strip)

  Pathname.glob(root.join("**", "Breakpoints.xcbkptlist")).each do |breakpoint|
    # Breakpoints.xcbkptlist -> .SHA-Breakpoints.xcbkptlist
    FileUtils.mv(breakpoint, breakpoint.dirname.join(".#{previous_sha}-#{breakpoint.basename}"))
  end
  
  Pathname.glob(root.join("**", ".#{current_sha}-Breakpoints.xcbkptlist")) do |breakpoint|
    # .SHA-Breakpoints.xcbkptlist -> Breakpoints.xcbkptlist
    FileUtils.mv(breakpoint, breakpoint.dirname.join("Breakpoints.xcbkptlist"))
  end
end