Class: HotReload

Inherits:
Object
  • Object
show all
Defined in:
lib/hotreload.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ HotReload

Returns a new instance of HotReload.



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# File 'lib/hotreload.rb', line 18

def initialize
  @project_injected = Hash.new
  @pending = []
  @project_path = ""
  @project_file = ""
  @server = nil
  @last_injected = ""
  @hot_reload_id = 0
  @hot_reload_tmp_path = ""
  @compile_class = Hash.new
  @xcode_dev_path = "/Applications/Xcode.app/Contents/Developer"
  @task_queue = Queue.new

end

Class Method Details

.test(path) ⇒ Object 



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# File 'lib/hotreload.rb', line 14

def self.test(path)
  puts "success, path is #{path}"
end

Instance Method Details

#build(file) ⇒ Object

rebuild file



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# File 'lib/hotreload.rb', line 170

def build(file)
  # project_model : project_file , build_Log
  project_model = get_project_model(file)
  project_file = project_model["project_file"]
  build_log_dir = project_model["build_log"]
  puts "project_file=#{project_file}, build_log=#{build_log_dir}"

  @hot_reload_id += 1
  file_tmp = "#{@hot_reload_tmp_path}/hotreload#{@hot_reload_id}"
  log_file =  "#{file_tmp}.log"

  compile_model = @compile_class[file]
  if !compile_model
    compile_model = get_compile_model(build_log_dir, file, file_tmp)
    if !compile_model
      puts
      "Could not locate compile command for #{file} (HotReload does not work with Whole Module Optimization. There are also restrictions on characters allowed in paths. All paths are also case sensitive is another thing to check.)"
      return
    end
  end

  puts "Compiling #{file}"
  project_dir_temp = Tool::escaping(@project_path, "$", "\\$0")
  compile_command = compile_model["compile_command"]
  command = "(cd #{project_dir_temp}) && #{compile_command} -o #{file_tmp}.o >#{log_file} 2>&1"
  ret = system(command)
  if !ret
    @compile_class.delete(file)
    puts "Re-compilation failed (#{file_tmp}.sh)\n#{File.read(log_file)})"
    return
  end

  # save in memory
  @compile_class[file] = compile_model

  # link result object file to create dylib
  puts "Creating dylib"
  regex = "\\s*(\\S+?\\.xctoolchain)"
  tool_chain = nil
  regex_result = compile_command.match(regex)
  if regex_result
    tool_chain = regex_result.captures[0]
  end
  if !tool_chain
    tool_chain = "#{@xcode_dev_path}/Toolchains/XcodeDefault.xctoolchain"
  end

  os_specific = ""
  cpu_arch = "arm64"
  is_real_device = true
  if compile_command.include?("iPhoneSimulator.platform")
    os_specific = "-isysroot #{@xcode_dev_path}/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk -mios-simulator-version-min=9.0 -L#{tool_chain}/usr/lib/swift/iphonesimulator -undefined dynamic_lookup"
    cpu_arch = "x86_64"
    is_real_device = false
  elsif compile_command.include?("iPhoneOS.platform")
    os_specific = "-isysroot #{@xcode_dev_path}/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk -mios-simulator-version-min=9.0 -L#{tool_chain}/usr/lib/swift/iphonesimulator -undefined dynamic_lookup"
    cpu_arch = "arm64"
  end

  link_command = "#{@xcode_dev_path}/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -arch \"#{cpu_arch}\" -bundle #{os_specific} -dead_strip -Xlinker -objc_abi_version -Xlinker 2 -fobjc-arc #{file_tmp}.o -o #{file_tmp}.dylib >>#{log_file} 2>&1"
  ret = system(link_command)
  if !ret
    puts "Link failed, check #{@hot_reload_tmp_path}/command.sh \n #{log_file}"
    return
  end

  puts "codesign dylib"
  codesigner = Signer.new()
  codesigner.pre_codesign(build_log_dir, is_real_device)
  ret = codesigner.codeSignDylib("#{file_tmp}.dylib")
  if !ret
    puts "codesign failed"
    return
  else
    puts "codesign success \n #{file_tmp}.dylib"
    return "#{file_tmp}.dylib"
  end
end

#build_log_path(project_file, derive_data_path) ⇒ Object

get xcode build log



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# File 'lib/hotreload.rb', line 264

def build_log_path(project_file, derive_data_path)
  # file = "/path/to/xyz.mp4"
  ext = File.extname(project_file)        # => ".mp4"
  name = File.basename(project_file, ext)  # => "xyz"
  prefix = "#{name}"+"-"

  build_log_array = []
  Dir.entries(derive_data_path).each do |sub|
    if sub.length <= prefix.length
      next
    end

    if sub.start_with?(prefix)
      buildLogDir = derive_data_path + "/" + sub + "/Logs/Build"
      if Dir.exist?(buildLogDir)
        build_log_array.push(buildLogDir)
      end
    end
  end

  log_sort = build_log_array.sort!{ |x,y| File.mtime(y) <=> File.mtime(x) }
  log_sort[0]
end

#changeFiles(changeFiles) ⇒ Object 



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# File 'lib/hotreload.rb', line 119

def changeFiles(changeFiles)
  now = Time.now.to_i
  changeFiles.each do |file|
    unless @pending.include?(file)
      time = @last_injected[file]
      if time == nil || now > time
        @last_injected[file] = now
        @pending.push(file)
      end
    end
  end

  @pending.each do |file|
    inject(file)
  end
  @pending.clear

end

#get_compile_model(build_log_dir, file, tmp_file) ⇒ Object

get compile command and changed file



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# File 'lib/hotreload.rb', line 289

def get_compile_model(build_log_dir, file, tmp_file)
  if !File.file?(file)
    return
  end

#   find build command
  CompileCommand.new().getCompileCommand(build_log_dir, file, tmp_file)

  compile_command_file = "#{tmp_file}.sh"
  if !File.exist?(compile_command_file)
    puts "compile command parse error"
    return
  end

  compile_command = File.read("#{tmp_file}.sh")
  compile_command = compile_command.split(" -o ")[0] + " "

  compile_model = Hash["compile_command" => compile_command, "file" => file]
end

#get_project_model(file) ⇒ Object

get project file and xcode build log path



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# File 'lib/hotreload.rb', line 250

def get_project_model(file)
  if !file.start_with?('/')
    puts "file is not validate: #{file}"
    return
  end

  # default deriveData path
  derive_data_path = File.expand_path("~/Library/Developer/Xcode/DerivedData")
  build_log = build_log_path(@project_file, derive_data_path)

  project_model = Hash["project_file" => @project_file, "build_log" => build_log]
end

#get_symbol_file ⇒ Object

get class symbols



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# File 'lib/hotreload.rb', line 310

def get_symbol_file
  file_tmp = "#{@hot_reload_tmp_path}/hotreload#{@hot_reload_id}"

  symbol_command = "#{@xcode_dev_path}/Toolchains/XcodeDefault.xctoolchain/usr/bin/nm #{file_tmp}.o | grep -E ' S _OBJC_CLASS_\\$_| _(_T0|\\$S|\\$s).*CN$' | awk '{print $3}' >#{file_tmp}.classes"
  ret = system(symbol_command)
  if !ret
    puts "Could not list class symbols"
  end

  class_file = "#{file_tmp}.classes"
end

#inject(source) ⇒ Object 



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# File 'lib/hotreload.rb', line 115

def inject(source)
  @task_queue << source
end

#read_int ⇒ Object 



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# File 'lib/hotreload.rb', line 79

def read_int
  @server.read_int
end

#read_message ⇒ Object 



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# File 'lib/hotreload.rb', line 83

def read_message
  @server.read_message
end

#runTask ⇒ Object 



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# File 'lib/hotreload.rb', line 87

def runTask
  Thread.new do
    # rebuild
    while true do
      source = @task_queue.pop
      @server.send_command(Command::HRCommandBuilding, source)
      dylib = build(source)
      if !dylib
        puts "build failed"
        @server.send_command(Command::HRCommandBuildFailed, source)
        next
      end

      symbol_file = get_symbol_file

      @server.send_command(Command::HRCommandTransferFile, nil)

      puts "start transfer file"
      file_tmp = "#{@hot_reload_tmp_path}/hotreload#{@hot_reload_id}"
      @server.send_file(dylib)
      @server.send_file("#{file_tmp}.o")
      @server.send_file(symbol_file)

      puts "finish transfer file"
    end
  end
end

#set_project(project_file) ⇒ Object 



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# File 'lib/hotreload.rb', line 138

def set_project(project_file)
  @server.send_command(Command::HRCommandSetProject, project_file)
  @watcher = FileWatcher.new(@project_path)
  @watcher.startWatcher  do |file|
    changeFiles(file)
  end
end

#startServer(projectpath) ⇒ Object 



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# File 'lib/hotreload.rb', line 33

def startServer(projectpath)
  @project_path = File.expand_path("..", projectpath)
  @server = Server.new
  @server.run

  # create dir
  @hot_reload_tmp_path = "#{@project_path}/HotReload-tmp"
  if !Dir.exist?(@hot_reload_tmp_path)
    Dir.mkdir(@hot_reload_tmp_path)
  end

  # tell client the project being watched
  @project_file = "#{@project_path}/*.xcworkspace"
  files_sorted_by_time = Dir[@project_file].sort!{ |x,y| File.mtime(y) <=> File.mtime(x) }
  @project_file = files_sorted_by_time[0]
  if @project_file == nil
    @project_file = "#{@project_path}/*.xcodeproj"
    files_sorted_by_time = Dir[@project_file].sort!{ |x,y| File.mtime(y) <=> File.mtime(x) }
    @project_file = files_sorted_by_time[0]
  end

  if read_message != Config::HOTRELOAD_KEY
    puts "not the validate client"
    return
  end

  # client spcific data for building
  # frameworkPath = readMessage
  # arch = readMessage

  @last_injected = @project_injected[@project_file]
  if @last_injected == nil
    @last_injected = Hash.new
    @project_injected[@project_file] = @last_injected
  end

  # listen_command

  runTask

  set_project(@project_file)

  @watcher = nil

end