Searches for a committed string in project with multiple repositories

git-grep-apps

#!/usr/bin/env ruby
# frozen_string_literal: true

# Searches for a committed string in project repositories
#
# Usage:
#   git-grep-apps <string>
#
# This script will search for a configuration file on the current directory or its parents when not found.
#
# Configuration:
#   Create a file named ".git-grep-apps" somewhere with relative paths to project repositories
#
# Configuration example:
#   some_dir
#   another/dir
#   # Comments are accepted
#   one_last_dir

require 'pathname'
require 'shellwords'

string = ARGV[0]
CONFIGURATION_FILE = '.git-grep-apps'

def read_configuration
  path = Pathname.new Dir.pwd

  while path.to_s != '/'
    file = path.join(CONFIGURATION_FILE)
    puts "searching #{file}"
    return { path: path.to_s, dirs: parse(File.read(file)) } if File.file? file

    path = path.parent
  end

  puts "#{CONFIGURATION_FILE} not found in directory and its parent"
end

def parse(content)
  content.split("\n").filter_map(&:strip).reject { |line| line.match?(/^#/) || line == '' }
end

config = read_configuration
puts config
exit 1 unless config

Dir.chdir config[:path] do |root|
  config[:dirs].each do |path|
    Dir.chdir path do
      puts "#{path}\n#{'=' * path.size}"

      results = `git --no-pager grep -n --color #{Shellwords.escape(string)}`
      results.split("\n").each { |line| puts "#{root}/#{path}/#{line}" }

      puts ''
    end
  end
end