module Bundler::SharedHelpers

# File bundler/shared_helpers.rb, line 309
def bundle_bin_path
  # bundler exe & lib folders have same root folder, typical gem installation
  exe_file = File.join(source_root, "exe/bundle")

  # for Ruby core repository testing
  exe_file = File.join(source_root, "libexec/bundle") unless File.exist?(exe_file)

  # bundler is a default gem, exe path is separate
  exe_file = Gem.bin_path("bundler", "bundle", VERSION) unless File.exist?(exe_file)

  exe_file
end

# File bundler/shared_helpers.rb, line 52
def chdir(dir, &blk)
  Bundler.rubygems.ext_lock.synchronize do
    Dir.chdir dir, &blk
  end
end

# File bundler/shared_helpers.rb, line 202
def checksum_for_file(path, digest)
  return unless path.file?
  # This must use File.read instead of Digest.file().hexdigest
  # because we need to preserve \n line endings on windows when calculating
  # the checksum
  SharedHelpers.filesystem_access(path, :read) do
    File.open(path, "rb") do |f|
      digest = SharedHelpers.digest(digest).new
      buf = String.new(capacity: 16_384, encoding: Encoding::BINARY)
      digest << buf while f.read(16_384, buf)
      digest.hexdigest
    end
  end
end

# File bundler/shared_helpers.rb, line 36
def default_bundle_dir
  bundle_dir = find_directory(".bundle")
  return nil unless bundle_dir

  bundle_dir = Pathname.new(bundle_dir)

  global_bundle_dir = Bundler.user_home.join(".bundle")
  return nil if bundle_dir == global_bundle_dir

  bundle_dir
end

# File bundler/shared_helpers.rb, line 21
def default_gemfile
  gemfile = find_gemfile
  raise GemfileNotFound, "Could not locate Gemfile" unless gemfile
  Pathname.new(gemfile).expand_path
end

# File bundler/shared_helpers.rb, line 27
def default_lockfile
  gemfile = default_gemfile

  case gemfile.basename.to_s
  when "gems.rb" then Pathname.new(gemfile.sub(/.rb$/, ".locked"))
  else Pathname.new("#{gemfile}.lock")
  end
end

# File bundler/shared_helpers.rb, line 197
def digest(name)
  require "digest"
  Digest(name)
end

# File bundler/shared_helpers.rb, line 154
def ensure_same_dependencies(spec, old_deps, new_deps)
  new_deps = new_deps.reject {|d| d.type == :development }
  old_deps = old_deps.reject {|d| d.type == :development }

  without_type = proc {|d| Gem::Dependency.new(d.name, d.requirements_list.sort) }
  new_deps.map!(&without_type)
  old_deps.map!(&without_type)

  extra_deps = new_deps - old_deps
  return if extra_deps.empty?

  Bundler.ui.debug "#{spec.full_name} from #{spec.remote} has corrupted API dependencies" \
    " (was expecting #{old_deps.map(&:to_s)}, but the real spec has #{new_deps.map(&:to_s)})"
  raise APIResponseMismatchError,
    "Downloading #{spec.full_name} revealed dependencies not in the API (#{extra_deps.join(", ")})." \
    "\nRunning `bundle update #{spec.name}` should fix the problem."
end

# File bundler/shared_helpers.rb, line 104
def filesystem_access(path, action = :write, &block)
  yield(path.dup)
rescue Errno::EACCES => e
  raise unless e.message.include?(path.to_s) || action == :create

  raise PermissionError.new(path, action)
rescue Errno::EAGAIN
  raise TemporaryResourceError.new(path, action)
rescue Errno::EPROTO
  raise VirtualProtocolError.new
rescue Errno::ENOSPC
  raise NoSpaceOnDeviceError.new(path, action)
rescue Errno::ENOTSUP
  raise OperationNotSupportedError.new(path, action)
rescue Errno::EEXIST, Errno::ENOENT
  raise
rescue SystemCallError => e
  raise GenericSystemCallError.new(e, "There was an error #{[:create, :write].include?(action) ? "creating" : "accessing"} `#{path}`.")
end

# File bundler/shared_helpers.rb, line 323
def gemspec_path
  # inside a gem repository, typical gem installation
  gemspec_file = File.join(source_root, "../../specifications/bundler-#{VERSION}.gemspec")

  # for Ruby core repository testing
  gemspec_file = File.expand_path("bundler.gemspec", __dir__) unless File.exist?(gemspec_file)

  # bundler is a default gem
  gemspec_file = File.join(Gem.default_specifications_dir, "bundler-#{VERSION}.gemspec") unless File.exist?(gemspec_file)

  gemspec_file
end

# File bundler/shared_helpers.rb, line 48
def in_bundle?
  find_gemfile
end

# File bundler/shared_helpers.rb, line 124
def major_deprecation(major_version, message, removed_message: nil, print_caller_location: false)
  if print_caller_location
    caller_location = caller_locations(2, 2).first
    suffix = " (called at #{caller_location.path}:#{caller_location.lineno})"
    message += suffix
    removed_message += suffix if removed_message
  end

  bundler_major_version = Bundler.bundler_major_version
  if bundler_major_version > major_version
    require_relative "errors"
    raise DeprecatedError, "[REMOVED] #{removed_message || message}"
  end

  return unless bundler_major_version >= major_version && prints_major_deprecations?
  Bundler.ui.warn("[DEPRECATED] #{message}")
end

# File bundler/shared_helpers.rb, line 184
def md5_available?
  return @md5_available if defined?(@md5_available)
  @md5_available = begin
    require "openssl"
    ::OpenSSL::Digest.digest("MD5", "")
    true
  rescue LoadError
    true
  rescue ::OpenSSL::Digest::DigestError
    false
  end
end

# File bundler/shared_helpers.rb, line 172
def pretty_dependency(dep)
  msg = String.new(dep.name)
  msg << " (#{dep.requirement})" unless dep.requirement == Gem::Requirement.default

  if dep.is_a?(Bundler::Dependency)
    platform_string = dep.platforms.join(", ")
    msg << " " << platform_string if !platform_string.empty? && platform_string != Gem::Platform::RUBY
  end

  msg
end

# File bundler/shared_helpers.rb, line 142
def print_major_deprecations!
  multiple_gemfiles = search_up(".") do |dir|
    gemfiles = gemfile_names.select {|gf| File.file? File.expand_path(gf, dir) }
    next if gemfiles.empty?
    break gemfiles.size != 1
  end
  return unless multiple_gemfiles
  message = "Multiple gemfiles (gems.rb and Gemfile) detected. " \
            "Make sure you remove Gemfile and Gemfile.lock since bundler is ignoring them in favor of gems.rb and gems.locked."
  Bundler.ui.warn message
end

# File bundler/shared_helpers.rb, line 58
def pwd
  Bundler.rubygems.ext_lock.synchronize do
    Pathname.pwd
  end
end

# File bundler/shared_helpers.rb, line 221
def relative_gemfile_path
  relative_path_to(Bundler.default_gemfile)
end

# File bundler/shared_helpers.rb, line 225
def relative_lockfile_path
  relative_path_to(Bundler.default_lockfile)
end

# File bundler/shared_helpers.rb, line 229
def relative_path_to(destination, from: pwd)
  Pathname.new(destination).relative_path_from(from).to_s
rescue ArgumentError
  # on Windows, if source and destination are on different drivers, there's no relative path from one to the other
  destination
end

# File bundler/shared_helpers.rb, line 15
def root
  gemfile = find_gemfile
  raise GemfileNotFound, "Could not locate Gemfile" unless gemfile
  Pathname.new(gemfile).expand_path.parent
end

# File bundler/shared_helpers.rb, line 77
def set_bundle_environment
  set_bundle_variables
  set_path
  set_rubyopt
  set_rubylib
end

# File bundler/shared_helpers.rb, line 291
def set_env(key, value)
  raise ArgumentError, "new key #{key}" unless EnvironmentPreserver::BUNDLER_KEYS.include?(key)
  orig_key = "#{EnvironmentPreserver::BUNDLER_PREFIX}#{key}"
  orig = ENV[key]
  orig ||= EnvironmentPreserver::INTENTIONALLY_NIL
  ENV[orig_key] ||= orig

  ENV[key] = value
end

# File bundler/shared_helpers.rb, line 64
def with_clean_git_env(&block)
  keys    = %w[GIT_DIR GIT_WORK_TREE]
  old_env = keys.inject({}) do |h, k|
    h.update(k => ENV[k])
  end

  keys.each {|key| ENV.delete(key) }

  block.call
ensure
  keys.each {|key| ENV[key] = old_env[key] }
end

# File bundler/shared_helpers.rb, line 217
def write_to_gemfile(gemfile_path, contents)
  filesystem_access(gemfile_path) {|g| File.open(g, "w") {|file| file.puts contents } }
end

# File bundler/shared_helpers.rb, line 362
def bundler_ruby_lib
  File.expand_path("..", __dir__)
end

# File bundler/shared_helpers.rb, line 366
def clean_load_path
  loaded_gem_paths = Bundler.rubygems.loaded_gem_paths

  $LOAD_PATH.reject! do |p|
    resolved_path = resolve_path(p)
    next if $LOADED_FEATURES.any? {|lf| lf.start_with?(resolved_path) }
    loaded_gem_paths.delete(p)
  end
  $LOAD_PATH.uniq!
end

# File bundler/shared_helpers.rb, line 266
def find_directory(*names)
  search_up(*names) do |dirname|
    return dirname if File.directory?(dirname)
  end
end

# File bundler/shared_helpers.rb, line 260
def find_file(*names)
  search_up(*names) do |filename|
    return filename if File.file?(filename)
  end
end

# File bundler/shared_helpers.rb, line 250
def find_gemfile
  given = ENV["BUNDLE_GEMFILE"]
  return given if given && !given.empty?
  find_file(*gemfile_names)
end

# File bundler/shared_helpers.rb, line 256
def gemfile_names
  ["gems.rb", "Gemfile"]
end

# File bundler/shared_helpers.rb, line 384
def prints_major_deprecations?
  require_relative "../bundler"
  return false if Bundler.settings[:silence_deprecations]
  require_relative "deprecate"
  return false if Bundler::Deprecate.skip
  true
end

# File bundler/shared_helpers.rb, line 377
def resolve_path(path)
  expanded = File.expand_path(path)
  return expanded unless File.exist?(expanded)

  File.realpath(expanded)
end

# File bundler/shared_helpers.rb, line 272
def search_up(*names)
  previous = nil
  current  = File.expand_path(SharedHelpers.pwd)

  until !File.directory?(current) || current == previous
    if ENV["BUNDLER_SPEC_RUN"]
      # avoid stepping above the tmp directory when testing
      return nil if File.directory?(File.join(current, "tmp"))
    end

    names.each do |name|
      filename = File.join(current, name)
      yield filename
    end
    previous = current
    current = File.expand_path("..", current)
  end
end

# File bundler/shared_helpers.rb, line 302
def set_bundle_variables
  Bundler::SharedHelpers.set_env "BUNDLE_BIN_PATH", bundle_bin_path
  Bundler::SharedHelpers.set_env "BUNDLE_GEMFILE", find_gemfile.to_s
  Bundler::SharedHelpers.set_env "BUNDLER_VERSION", Bundler::VERSION
  Bundler::SharedHelpers.set_env "BUNDLER_SETUP", File.expand_path("setup", __dir__)
end

# File bundler/shared_helpers.rb, line 341
def set_path
  validate_bundle_path
  paths = (ENV["PATH"] || "").split(File::PATH_SEPARATOR)
  paths.unshift "#{Bundler.bundle_path}/bin"
  Bundler::SharedHelpers.set_env "PATH", paths.uniq.join(File::PATH_SEPARATOR)
end

# File bundler/shared_helpers.rb, line 356
def set_rubylib
  rubylib = (ENV["RUBYLIB"] || "").split(File::PATH_SEPARATOR)
  rubylib.unshift bundler_ruby_lib unless RbConfig::CONFIG["rubylibdir"] == bundler_ruby_lib
  Bundler::SharedHelpers.set_env "RUBYLIB", rubylib.uniq.join(File::PATH_SEPARATOR)
end

# File bundler/shared_helpers.rb, line 348
def set_rubyopt
  rubyopt = [ENV["RUBYOPT"]].compact
  setup_require = "-r#{File.expand_path("setup", __dir__)}"
  return if !rubyopt.empty? && rubyopt.first.include?(setup_require)
  rubyopt.unshift setup_require
  Bundler::SharedHelpers.set_env "RUBYOPT", rubyopt.join(" ")
end

# File bundler/shared_helpers.rb, line 337
def source_root
  File.expand_path("../..", __dir__)
end

# File bundler/shared_helpers.rb, line 238
def validate_bundle_path
  path_separator = Bundler.rubygems.path_separator
  return unless Bundler.bundle_path.to_s.split(path_separator).size > 1
  message = "Your bundle path contains text matching #{path_separator.inspect}, " \
            "which is the path separator for your system. Bundler cannot " \
            "function correctly when the Bundle path contains the " \
            "system's PATH separator. Please change your " \
            "bundle path to not match #{path_separator.inspect}." \
            "\nYour current bundle path is '#{Bundler.bundle_path}'."
  raise Bundler::PathError, message
end