Class: ReactNativeUtil::Converter

Inherits:
Object
  • Object
show all
Includes:
Util
Defined in:
lib/react_native_util/converter.rb

Overview

Class to perform conversion operations.

Constant Summary collapse

DEFAULT_DEPENDENCIES =
Array<String>

Default contents of Libraries group

%w[
  RCTAnimation
  React
  RCTActionSheet
  RCTBlob
  RCTGeolocation
  RCTImage
  RCTLinking
  RCTNetwork
  RCTSettings
  RCTText
  RCTVibration
  RCTWebSocket
]
PODFILE_TEMPLATE_PATH =
String

Path to the Podfile template

File.expand_path '../assets/templates/Podfile.erb', __dir__

Instance Attribute Summary collapse

Attributes included from Util

#platform

Instance Method Summary collapse

Methods included from Util

#boolean_env_var?, #execute, #float_env_var, #log, #mac?

Constructor Details

#initialize(repo_update: nil) ⇒ Converter

Returns a new instance of Converter.



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# File 'lib/react_native_util/converter.rb', line 42

def initialize(repo_update: nil)
  @options = {}
  if repo_update.nil?
    @options[:repo_update] = boolean_env_var?(:REACT_NATIVE_UTIL_REPO_UPDATE, default_value: true)
  else
    @options[:repo_update] = repo_update
  end
end

Instance Attribute Details

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/react_native_util/converter.rb', line 40

def options
  @options
end

#package_json ⇒ Object (readonly)

Hash

Contents of ./package.json



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# File 'lib/react_native_util/converter.rb', line 32

def package_json
  @package_json
end

#xcodeproj ⇒ Object (readonly)

Xcodeproj::Project

Contents of the project at xcodproj_path



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# File 'lib/react_native_util/converter.rb', line 38

def xcodeproj
  @xcodeproj
end

#xcodeproj_path ⇒ Object (readonly)

String

Full path to Xcode project



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# File 'lib/react_native_util/converter.rb', line 35

def xcodeproj_path
  @xcodeproj_path
end

Instance Method Details

#add_packager_script ⇒ Object 



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# File 'lib/react_native_util/converter.rb', line 245

def add_packager_script
  script = packager_script
  return unless script

  target = xcodeproj.targets.find { |t| t.name == app_name }
  phase = target.new_shell_script_build_phase 'Start Packager'
  phase.shell_script = script

  # TODO: Move this build phase to the top of the list before the pod install.
end

#app_name ⇒ String

The name of the app as specified in package.json

Returns:



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# File 'lib/react_native_util/converter.rb', line 203

def app_name
  @app_name ||= package_json['name']
end

#check_repo_status! ⇒ Object

Raises:



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# File 'lib/react_native_util/converter.rb', line 227

def check_repo_status!
  # If the git command is not installed, there's not much we can do.
  # Don't want to use verify_git here, which will insist on installing
  # the command. The logic of that method could change.
  return if `which git`.empty?

  unless Dir.exist? ".git"
    `git rev-parse --git-dir > /dev/null 2>&1`
    # Not a git repo
    return unless $?.success?
  end

  `git diff-index --quiet HEAD --`
  return if $?.success?

  raise ConversionError, 'Uncommitted changes in repo. Please commit or stash before continuing.'
end

#convert_to_react_pod! ⇒ Object

Convert project to use React pod

Raises:

  • ConversionError on failure



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# File 'lib/react_native_util/converter.rb', line 53

def convert_to_react_pod!
  raise ConversionError, "macOS required." unless mac?

  # Make sure no uncommitted changes
  check_repo_status!

  load_package_json!
  log 'package.json:'
  log " app name: #{app_name.inspect}"

  log 'Installing NPM dependencies with yarn'
  execute 'yarn'

  # 1. Detect project. TODO: Add an option to override.
  @xcodeproj_path = File.expand_path "ios/#{package_json['name']}.xcodeproj"
  load_xcodeproj!
  log "Found Xcode project at #{xcodeproj_path}"

  if libraries_group.nil?
    log "Libraries group not found in #{xcodeproj_path}. No conversion necessary."
    exit 0
  end

  # 2. Detect native dependencies in Libraries group.
  log 'Dependencies:'
  dependencies.each { |d| log " #{d}" }

  # Save for after Libraries removed.
  deps_to_add = dependencies

  # 3. Run react-native unlink for each one.
  dependencies.each do |dep|
    execute 'react-native', 'unlink', dep
  end

  # reload after react-native unlink
  load_xcodeproj!

  # 4a. TODO: Add Start Packager script
  validate_app_target!
  add_packager_script

  # 4b. Remove Libraries group from Xcode project.
  remove_libraries_group_from_project!

  xcodeproj.save

  # 5. Generate boilerplate Podfile.
  # TODO: Determine appropriate subspecs from contents of Libraries group
  generate_podfile!

  # 6. Run react-native link for each dependency.
  deps_to_add.each do |dep|
    execute 'react-native', 'link', dep
  end

  # 7. pod install
  command = %w[pod install --silent]
  command << '--repo-update' if options[:repo_update]
  execute(*command, chdir: 'ios')

  # 8. SCM/git (add, commit - optional)

  # 9. Open workspace/build
  execute 'open', File.join('ios', "#{app_name}.xcworkspace")
end

#dependencies ⇒ Array<String>

A list of external dependencies from NPM requiring react-native link.

Returns:

  • (Array<String>) —

    a list of NPM package names



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# File 'lib/react_native_util/converter.rb', line 173

def dependencies
  return [] if libraries_group.nil?

  dependency_paths.map do |path|
    # Find the root above the ios/*.xcodeproj under node_modules
    root = File.expand_path '../..', path
    File.basename root
  end
end

#dependency_paths ⇒ Array<String>

Paths to Xcode projects in the Libraries group from external deps.

Returns:

  • (Array<String>) —

    a list of absolute paths to Xcode projects



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# File 'lib/react_native_util/converter.rb', line 185

def dependency_paths
  return [] if libraries_group.nil?

  paths = libraries_group.children.reject { |c| DEFAULT_DEPENDENCIES.include?(c.name.sub(/\.xcodeproj$/, '')) }.map(&:path)
  paths.map { |p| File.expand_path p, File.join(Dir.pwd, 'ios') }
end

#generate_podfile! ⇒ Object

Generate a Podfile from a template.



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# File 'lib/react_native_util/converter.rb', line 220

def generate_podfile!
  podfile_contents = ERB.new(File.read(PODFILE_TEMPLATE_PATH)).result binding
  File.open 'ios/Podfile', 'w' do |file|
    file.write podfile_contents
  end
end

#libraries_group ⇒ Object

A representation of the Libraries group (if any) from the Xcode project.

Returns:

  • the Libraries group



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# File 'lib/react_native_util/converter.rb', line 143

def libraries_group
  xcodeproj['Libraries']
end

#load_package_json! ⇒ Object

Read the contents of ./package.json into @package_json

Raises:

  • ConversionError on failure



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# File 'lib/react_native_util/converter.rb', line 122

def load_package_json!
  @package_json = File.open('package.json') { |f| JSON.parse f.read }
rescue Errno::ENOENT
  raise ConversionError, 'Failed to load package.json. File not found. Please run from the project root.'
rescue JSON::ParserError => e
  raise ConversionError, "Failed to parse package.json: #{e.message}"
end

#load_xcodeproj! ⇒ Object

Load the project at @xcodeproj_path into @xcodeproj

Raises:

  • ConversionError on failure



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# File 'lib/react_native_util/converter.rb', line 132

def load_xcodeproj!
  @xcodeproj = nil # in case of exception on reopen
  @xcodeproj = Xcodeproj::Project.open xcodeproj_path
rescue Errno::ENOENT
  raise ConversionError, "Failed to open #{xcodeproj_path}. File not found."
rescue Xcodeproj::PlainInformative => e
  raise ConversionError, "Failed to load #{xcodeproj_path}: #{e.message}"
end

#packager_script ⇒ Object 



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# File 'lib/react_native_util/converter.rb', line 263

def packager_script
  react_project!.targets.first.build_phases.find { |p| p.name =~ /packager/i }.shell_script.gsub(%r{../scripts}, '../node_modules/react-native/scripts')
rescue Errno::ENOENT
  log 'Could not open React.xcodeproj. File not found.'
  nil
rescue Xcodeproj::PlainInformative => e
  log "Could not open React.xcodeproj. #{e.message}"
  nil
end

#react_project! ⇒ Object 



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# File 'lib/react_native_util/converter.rb', line 256

def react_project!
  return @react_project if @react_project

  path = libraries_group.children.find { |c| c.path =~ /React.xcodeproj/ }.real_path
  @react_project = Xcodeproj::Project.open path
end

#remove_libraries_from_target(target) ⇒ Object 



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# File 'lib/react_native_util/converter.rb', line 159

def remove_libraries_from_target(target)
  log "Removing Libraries from #{target.name}"
  to_remove = target.frameworks_build_phase.files.select do |file|
    path = file.file_ref.pretty_print
    next false unless /^lib(.+)\.a$/.match?(path)

    static_libs.include?(path)
  end

  to_remove.each { |f| target.frameworks_build_phase.remove_build_file f }
end

#remove_libraries_group_from_project! ⇒ Object

Remove the Libraries group from the xcodeproj in memory. Resets @libraries_group to nil as well.



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# File 'lib/react_native_util/converter.rb', line 149

def remove_libraries_group_from_project!
  # Remove links against these static libraries
  xcodeproj.targets.reject { |t| t.name =~ /-tvOS/ }.each do |t|
    remove_libraries_from_target t
  end

  log 'Removing Libraries group'
  libraries_group.remove_from_project
end

#static_libs ⇒ Array<String>

All static libraries from the Libraries group

Returns:

  • (Array<String>) —

    an array of filenames



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# File 'lib/react_native_util/converter.rb', line 194

def static_libs
  libraries_group.children.map do |library|
    root = File.basename(library.path).sub(/\.xcodeproj$/, '')
    "lib#{root}.a"
  end
end

#test_target ⇒ Object 



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# File 'lib/react_native_util/converter.rb', line 207

def test_target
  xcodeproj.targets.select(&:test_target_type?).reject { |t| t.name =~ /tvOS/ }.first
end

#validate_app_target! ⇒ Object

Validate an assumption about the project. TODO: Provide override option.

Raises:

  • ConversionError if an application target is not found with the same name as the project.



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# File 'lib/react_native_util/converter.rb', line 213

def validate_app_target!
  app_target = xcodeproj.targets.find { |t| t.name = app_name }
  raise ConversionError, "Unable to find target #{app_name} in #{xcodeproj_path}." if app_target.nil?
  raise ConversionError, "Target #{app_name} is not an application target." unless app_target.product_type == 'com.apple.product-type.application'
end