Class: Flr::CodeUtil

Inherits:
Object
  • Object
show all
Defined in:
lib/flr/util/code_util.rb

Overview

代码生成相关的工具类方法

Constant Summary collapse

@@should_support_nullsafety = 
nil

Class Method Summary collapse

Class Method Details

.generate__R_FontFamily_class(font_family_config_array, package_name) ⇒ Object

generate__R_FontFamily_class(font_family_config_array, package_name) -> string

根据模板，为 font_family_config_array（字体家族配置数组）生成 _R_FontFamily class 的代码



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# File 'lib/flr/util/code_util.rb', line 627

def self.generate__R_FontFamily_class(font_family_config_array, package_name)

  all_g_AssetResource_property_code = ""

  font_family_config_array.each do |font_family_config|
    all_g_AssetResource_property_code += "\n"

    font_family_name = font_family_config["family"]

    font_family_id = generate_font_family_id(font_family_name)
    font_family_comment = "font family: #{font_family_name}"

    g_AssetResource_property_code = <<-CODE
  /// #{font_family_comment}
  // ignore: non_constant_identifier_names
  final #{font_family_id} = "#{font_family_name}";
    CODE

    all_g_AssetResource_property_code += g_AssetResource_property_code
  end

  code = <<-CODE
/// This `_R_FontFamily` class is generated and contains references to static font asset resources.
// ignore: camel_case_types
class _R_FontFamily {
  const _R_FontFamily();
#{all_g_AssetResource_property_code}
}
  CODE

  return code
end

.generate__R_Image_AssetResource_class(non_svg_image_asset_array, non_svg_image_asset_id_dict, package_name, is_package_project_type) ⇒ Object

generate__R_Image_AssetResource_class(non_svg_image_asset_array, non_svg_image_asset_id_dict, package_name, is_package_project_type) -> string

根据模板，为 non_svg_image_asset_array（非svg类的图片资产数组）生成 _R_Image_AssetResource class 的代码



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# File 'lib/flr/util/code_util.rb', line 388

def self.generate__R_Image_AssetResource_class(non_svg_image_asset_array, non_svg_image_asset_id_dict, package_name, is_package_project_type)

  all_g_AssetResource_property_code = ""

  non_svg_image_asset_array.each do |image_asset|
    all_g_AssetResource_property_code += "\n"
    g_AssetResource_property_code = generate_AssetResource_property(image_asset, non_svg_image_asset_id_dict, package_name, is_package_project_type, Flr::PRIOR_NON_SVG_IMAGE_FILE_TYPE)
    all_g_AssetResource_property_code += g_AssetResource_property_code
  end

  code = <<-CODE
// ignore: camel_case_types
class _R_Image_AssetResource {
  const _R_Image_AssetResource();
#{all_g_AssetResource_property_code}
}
  CODE

  return code
end

.generate__R_Image_class(non_svg_image_asset_array, non_svg_image_asset_id_dict, package_name) ⇒ Object

generate__R_Image_class(non_svg_image_asset_array, non_svg_image_asset_id_dict, package_name) -> string

根据模板，为 non_svg_image_asset_array（非svg类的图片资产数组）生成 _R_Image class 的代码



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# File 'lib/flr/util/code_util.rb', line 463

def self.generate__R_Image_class(non_svg_image_asset_array, non_svg_image_asset_id_dict, package_name)

  all_g_Asset_method_code = ""

  non_svg_image_asset_array.each do |image_asset|
    all_g_Asset_method_code += "\n"

    asset_id = non_svg_image_asset_id_dict[image_asset]
    asset_comment = generate_asset_comment(image_asset, package_name)

    g_Asset_method_code = <<-CODE
  /// #{asset_comment}
  // ignore: non_constant_identifier_names
  AssetImage #{asset_id}() {
return AssetImage(asset.#{asset_id}.keyName);
  }
    CODE

    all_g_Asset_method_code += g_Asset_method_code
  end

  code = <<-CODE
/// This `_R_Image` class is generated and contains references to static non-svg type image asset resources.
// ignore: camel_case_types
class _R_Image {
  const _R_Image();

  final asset = const _R_Image_AssetResource();
#{all_g_Asset_method_code}
}
  CODE

  return code
end

.generate__R_Svg_AssetResource_class(svg_image_asset_array, svg_image_asset_id_dict, package_name, is_package_project_type) ⇒ Object

generate__R_Svg_AssetResource_class(svg_image_asset_array, svg_image_asset_id_dict, package_name, is_package_project_type) -> string

根据模板，为 svg_image_asset_array（svg类的图片资产数组）生成 _R_Svg_AssetResource class 的代码



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# File 'lib/flr/util/code_util.rb', line 413

def self.generate__R_Svg_AssetResource_class(svg_image_asset_array, svg_image_asset_id_dict, package_name, is_package_project_type)

  all_g_AssetResource_property_code = ""

  svg_image_asset_array.each do |image_asset|
    all_g_AssetResource_property_code += "\n"
    g_AssetResource_property_code = generate_AssetResource_property(image_asset, svg_image_asset_id_dict, package_name, is_package_project_type, Flr::PRIOR_SVG_IMAGE_FILE_TYPE)
    all_g_AssetResource_property_code += g_AssetResource_property_code
  end

  code = <<-CODE
// ignore: camel_case_types
class _R_Svg_AssetResource {
  const _R_Svg_AssetResource();
#{all_g_AssetResource_property_code}
}
  CODE

  return code
end

.generate__R_Svg_class(svg_image_asset_array, svg_image_asset_id_dict, package_name) ⇒ Object

generate__R_Svg_class(svg_image_asset_array, svg_image_asset_id_dict, package_name) -> string

根据模板，为 svg_image_asset_array（svg类的图片资产数组）生成 _R_Svg class 的代码



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# File 'lib/flr/util/code_util.rb', line 502

def self.generate__R_Svg_class(svg_image_asset_array, svg_image_asset_id_dict, package_name)

  all_g_Asset_method_code = ""

  svg_image_asset_array.each do |image_asset|
    all_g_Asset_method_code += "\n"

    asset_id = svg_image_asset_id_dict[image_asset]
    asset_comment = generate_asset_comment(image_asset, package_name)

    if should_support_nullsafety
      g_Asset_method_code = <<-CODE
  /// #{asset_comment}
  // ignore: non_constant_identifier_names
  AssetSvg #{asset_id}({required double width, required double height}) {
final imageProvider = AssetSvg(asset.#{asset_id}.keyName, width: width, height: height);
return imageProvider;
  }
      CODE
    else
      g_Asset_method_code = <<-CODE
  /// #{asset_comment}
  // ignore: non_constant_identifier_names
  AssetSvg #{asset_id}({@required double width, @required double height}) {
final imageProvider = AssetSvg(asset.#{asset_id}.keyName, width: width, height: height);
return imageProvider;
  }
      CODE
    end

    all_g_Asset_method_code += g_Asset_method_code
  end

  code = <<-CODE
/// This `_R_Svg` class is generated and contains references to static svg type image asset resources.
// ignore: camel_case_types
class _R_Svg {
  const _R_Svg();

  final asset = const _R_Svg_AssetResource();
#{all_g_Asset_method_code}
}
  CODE

  return code
end

.generate__R_Text_AssetResource_class(text_asset_array, text_asset_id_dict, package_name, is_package_project_type) ⇒ Object

generate__R_Text_AssetResource_class(text_asset_array, text_asset_id_dict, package_name, is_package_project_typ) -> string

根据模板，为 text_asset_array（文本资产数组）生成 _R_Text_AssetResource class 的代码



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# File 'lib/flr/util/code_util.rb', line 438

def self.generate__R_Text_AssetResource_class(text_asset_array, text_asset_id_dict, package_name, is_package_project_type)

  all_g_AssetResource_property_code = ""

  text_asset_array.each do |text_asset|
    all_g_AssetResource_property_code += "\n"
    g_AssetResource_property_code = generate_AssetResource_property(text_asset, text_asset_id_dict, package_name, is_package_project_type, Flr::PRIOR_TEXT_FILE_TYPE)
    all_g_AssetResource_property_code += g_AssetResource_property_code
  end

  code = <<-CODE
// ignore: camel_case_types
class _R_Text_AssetResource {
  const _R_Text_AssetResource();
#{all_g_AssetResource_property_code}
}
  CODE

  return code
end

.generate__R_Text_class(text_asset_array, text_asset_id_dict, package_name) ⇒ Object

generate__R_Text_class(text_asset_array, text_asset_id_dict, package_name) -> string

根据模板，为 text_asset_array（文本资产数组）生成 _R_Text class 的代码



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# File 'lib/flr/util/code_util.rb', line 553

def self.generate__R_Text_class(text_asset_array, text_asset_id_dict, package_name)

  all_g_Asset_method_code = ""

  text_asset_array.each do |text_asset|
    all_g_Asset_method_code += "\n"

    asset_id = text_asset_id_dict[text_asset]
    asset_comment = generate_asset_comment(text_asset, package_name)

    g_Asset_method_code = <<-CODE
  /// #{asset_comment}
  // ignore: non_constant_identifier_names
  Future<String> #{asset_id}() {
final str = rootBundle.loadString(asset.#{asset_id}.keyName);
return str;
  }
    CODE

    all_g_Asset_method_code += g_Asset_method_code
  end

  code = <<-CODE
/// This `_R_Text` class is generated and contains references to static text asset resources.
// ignore: camel_case_types
class _R_Text {
  const _R_Text();

  final asset = const _R_Text_AssetResource();
#{all_g_Asset_method_code}
}
  CODE

  return code
end

.generate_asset_comment(asset, package_name) ⇒ Object

generate_asset_comment (asset, package_name) -> string

为当前asset生成注释

Examples

package_name = “flutter_r_demo”

Example-1

asset = “packages/flutter_r_demo/assets/images/test.png” asset_comment = “asset: lib/assets/images/test.png”

Example-2

asset = “assets/images/test.png” asset_comment = “asset: assets/images/test.png”



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# File 'lib/flr/util/code_util.rb', line 306

def self.generate_asset_comment (asset, package_name)
  packages_prefix = "packages/#{package_name}/"

  if asset =~ /\A#{packages_prefix}/
    # asset: packages/flutter_r_demo/assets/images/test.png
    # to get assetName: assets/images/test.png
    asset_name = asset.dup
    asset_name[packages_prefix] = ""

    asset_comment = "asset: lib/#{asset_name}"
    return asset_comment
  else
    # asset: assets/images/test.png
    # to get assetName: assets/images/test.png
    asset_name = asset.dup

    asset_comment = "asset: #{asset_name}"
    return asset_comment
  end

end

.generate_asset_id(asset, used_asset_id_array, prior_asset_type = ".*") ⇒ Object

generate_asset_id (asset, used_asset_id_array, prior_asset_type) -> string

  • prior_asset_type: 优先的资源类型；默认值为 “.*”，意味当前不存在任何优先的资源类型

    对于优先的资源类型，其 asset_id 不会携带类型信息，详细见例子

为当前 asset 生成 asset_id（资产ID）；asset_id 一般为 asset 的 file_basename_no_extension； 但是为了保证 asset_id 的健壮性，需要对 file_basename_no_extension 做以下加工处理：

  • 处理非法字符：把除了字母（a-z, A-Z）、数字（0-9）、‘_’ 字符、‘$’ 字符之外的字符转换为 ‘_’ 字符

  • 首字母转化为小写

  • 处理首字符异常情况：检测首字符是不是数字、‘_’、‘$’，若是则添加前缀字符“a”

  • 处理 asset_id 重名的情况

Examples

Example-1

asset = “packages/flutter_r_demo/assets/images/test.png” asset = “packages/flutter_r_demo/assets/images/test.jpg” used_asset_id_array = [] prior_asset_type = “.png” asset_id = “test”

Example-2

asset = “packages/flutter_r_demo/assets/images/test.jpg” used_asset_id_array = [test] prior_asset_type = “.png” asset_id = “test_jpg”

Example-3

asset = “packages/flutter_r_demo/assets/home-images/test.jpg” used_asset_id_array = [test, test_jpg] prior_asset_type = “.png” asset_id = “test_jpg_1”

Example-4

asset = “packages/flutter_r_demo/assets/texts/test.json” used_asset_id_array = [] prior_asset_type = “.*” asset_id = “test_json”



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# File 'lib/flr/util/code_util.rb', line 241

def self.generate_asset_id(asset, used_asset_id_array, prior_asset_type = ".*")
  file_extname = File.extname(asset).downcase

  dirname = File.dirname(asset)
  parent_dir_name = File.basename(dirname)
  file_basename = File.basename(asset)

  file_basename_no_extension = File.basename(asset, ".*")
  asset_id = file_basename_no_extension.dup
  if prior_asset_type.eql?(".*") or file_extname.eql?(prior_asset_type) == false
    ext_info = file_extname
    ext_info[0] = "_"
    asset_id = asset_id + ext_info
  end

  # 处理非法字符
  asset_id = asset_id.gsub(/[^a-zA-Z0-9_$]/, "_")

  # 首字母转化为小写
  capital = asset_id[0].downcase
  asset_id[0] = capital

  # 处理首字符异常情况
  if capital =~ /[0-9_$]/
    asset_id = "a" + asset_id
  end

  # 处理 asset_id 重名的情况
  if used_asset_id_array.include?(asset_id)
    # 当前asset_id重名次数，初始值为1
    repeat_count = 1

    # 查找当前asset_id衍生出来的asset_id_brother（id兄弟）
    # asset_id_brother = #{asset_id}$#{repeat_count}
    # 其中，repeat_count >= 1
    #
    # Example：
    # asset_id = test
    # asset_id_brother = test$1
    #
    id_brother_regx = /^#{asset_id}\$[1-9][0-9]*$/
    cur_asset_id_brothers = used_asset_id_array.select{ |id| id =~ id_brother_regx }

    repeat_count += cur_asset_id_brothers.size
    asset_id = "#{asset_id}$#{repeat_count}"
  end

  return asset_id
end

.generate_AssetResource_class(package_name) ⇒ Object

generate_AssetResource_class(package_name) -> string

根据模板生成 AssetResource class 的代码



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# File 'lib/flr/util/code_util.rb', line 89

def self.generate_AssetResource_class(package_name)
  code = <<-CODE
/// Asset resource’s metadata class.
/// For example, here is the metadata of `packages/flutter_demo/assets/images/example.png` asset:
/// - packageName：flutter_demo
/// - assetName：assets/images/example.png
/// - fileDirname：assets/images
/// - fileBasename：example.png
/// - fileBasenameNoExtension：example
/// - fileExtname：.png
  CODE

  if should_support_nullsafety
    code += <<-CODE
class AssetResource {
  /// Creates an object to hold the asset resource’s metadata.
  const AssetResource(this.assetName, {this.packageName});

  /// The name of the main asset from the set of asset resources to choose from.
  final String assetName;

  /// The name of the package from which the asset resource is included.
  final String? packageName;

  /// The name used to generate the key to obtain the asset resource. For local assets
  /// this is [assetName], and for assets from packages the [assetName] is
  /// prefixed 'packages/<package_name>/'.
  String get keyName => packageName == null ? assetName : "packages/$packageName/$assetName";

  /// The file basename of the asset resource.
  String get fileBasename {
final basename = path.basename(assetName);
return basename;
  }

  /// The no extension file basename of the asset resource.
  String get fileBasenameNoExtension {
final basenameWithoutExtension = path.basenameWithoutExtension(assetName);
return basenameWithoutExtension;
  }

  /// The file extension name of the asset resource.
  String get fileExtname {
final extension = path.extension(assetName);
return extension;
  }

  /// The directory path name of the asset resource.
  String get fileDirname {
var dirname = assetName;
if (packageName != null) {
  final packageStr = "packages/$packageName/";
  dirname = dirname.replaceAll(packageStr, "");
}
final filenameStr = "$fileBasename/";
dirname = dirname.replaceAll(filenameStr, "");
return dirname;
  }
}
    CODE
  else
    code += <<-CODE
class AssetResource {
  /// Creates an object to hold the asset resource’s metadata.
  const AssetResource(this.assetName, {this.packageName}) : assert(assetName != null);

  /// The name of the main asset from the set of asset resources to choose from.
  final String assetName;

  /// The name of the package from which the asset resource is included.
  final String packageName;

  /// The name used to generate the key to obtain the asset resource. For local assets
  /// this is [assetName], and for assets from packages the [assetName] is
  /// prefixed 'packages/<package_name>/'.
  String get keyName => packageName == null ? assetName : "packages/$packageName/$assetName";

  /// The file basename of the asset resource.
  String get fileBasename {
final basename = path.basename(assetName);
return basename;
  }

  /// The no extension file basename of the asset resource.
  String get fileBasenameNoExtension {
final basenameWithoutExtension = path.basenameWithoutExtension(assetName);
return basenameWithoutExtension;
  }

  /// The file extension name of the asset resource.
  String get fileExtname {
final extension = path.extension(assetName);
return extension;
  }

  /// The directory path name of the asset resource.
  String get fileDirname {
var dirname = assetName;
if (packageName != null) {
  final packageStr = "packages/$packageName/";
  dirname = dirname.replaceAll(packageStr, "");
}
final filenameStr = "$fileBasename/";
dirname = dirname.replaceAll(filenameStr, "");
return dirname;
  }
}
    CODE
  end

  return code
end

.generate_AssetResource_property(asset, asset_id_dict, package_name, is_package_project_type, prior_asset_type = ".*") ⇒ Object

generate_AssetResource_property(asset, asset_id_dict, package_name, is_package_project_type, prior_asset_type) -> string

为当前 asset 生成 AssetResource property 的代码



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# File 'lib/flr/util/code_util.rb', line 332

def self.generate_AssetResource_property(asset, asset_id_dict, package_name, is_package_project_type, prior_asset_type = ".*")
  asset_id = asset_id_dict[asset]
  asset_comment = generate_asset_comment(asset, package_name)

  asset_name = ""
  needPackage = false

  packages_prefix = "packages/#{package_name}/"
  if asset =~ /\A#{packages_prefix}/
    # asset: packages/flutter_r_demo/assets/images/test.png
    # to get asset_name: assets/images/test.png
    asset_name = asset.dup
    asset_name[packages_prefix] = ""

    needPackage = true
  else
    # asset: assets/images/test.png
    # to get asset_name: assets/images/test.png
    asset_name = asset.dup

    if is_package_project_type
      needPackage = true
    else
      needPackage = false
    end

  end

  # 对字符串中的 '$' 进行转义处理：'$' -> '\$'
  # asset_name: assets/images/test$.png
  # to get escaped_asset_name: assets/images/test\$.png
  escaped_asset_name = asset_name.gsub(/[$]/, "\\$")

  if needPackage
    code = <<-CODE
  /// #{asset_comment}
  // ignore: non_constant_identifier_names
  final #{asset_id} = const AssetResource("#{escaped_asset_name}", packageName: R.package);
    CODE

    return code
  else
    code = <<-CODE
  /// #{asset_comment}
  // ignore: non_constant_identifier_names
  final #{asset_id} = const AssetResource("#{escaped_asset_name}", packageName: null);
    CODE

    return code
  end
end

.generate_font_family_id(font_family_name) ⇒ Object

generate_font_family_id(font_family_name) -> string

为当前 font_family_name 生成 font_family_id；font_family_id 一般为 asset 的 font_family_name； 但是为了保证 font_family_id 的健壮性，需要对 font_family_name 做以下加工处理：

  • 处理非法字符：把除了字母（a-z, A-Z）、数字（0-9）、‘_’ 字符、‘$’ 字符之外的字符转换为 ‘_’ 字符

  • 首字母转化为小写

  • 处理首字符异常情况：检测首字符是不是数字、‘_’、‘$’，若是则添加前缀字符“a”

Examples

a_font_family_name = “Amiri” b_font_family_name = “Baloo-Thambi-2” a_font_family_id = “amiri” b_font_family_id = “baloo_Thambi_2”



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# File 'lib/flr/util/code_util.rb', line 604

def self.generate_font_family_id(font_family_name)

  font_family_id = font_family_name.dup

  # 处理非法字符
  font_family_id = font_family_id.gsub(/[^a-zA-Z0-9_$]/, "_")

  # 首字母转化为小写
  capital = font_family_id[0].downcase
  font_family_id[0] = capital

  # 处理首字符异常情况
  if capital =~ /[0-9_$]/
    font_family_id = "a" + font_family_id
  end

  return font_family_id
end

.generate_R_class(package_name) ⇒ Object

generate_R_class(package_name) -> string

根据模板生成 R class 的代码



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# File 'lib/flr/util/code_util.rb', line 42

def self.generate_R_class(package_name)
  code = <<-CODE
// IT IS GENERATED BY FLR - DO NOT MODIFY BY HAND
// YOU CAN GET MORE DETAILS ABOUT FLR FROM:
// - https://github.com/Fly-Mix/flr-cli
// - https://github.com/Fly-Mix/flr-vscode-extension
// - https://github.com/Fly-Mix/flr-as-plugin
//

// ignore: unused_import
import 'package:flutter/widgets.dart';
// ignore: unused_import
import 'package:flutter/services.dart' show rootBundle;
// ignore: unused_import
import 'package:path/path.dart' as path;
// ignore: unused_import
import 'package:flutter_svg/flutter_svg.dart';
// ignore: unused_import
import 'package:r_dart_library/asset_svg.dart';

/// This `R` class is generated and contains references to static asset resources.
class R {
  /// package name: #{package_name}
  static const package = "#{package_name}";

  /// This `R.image` struct is generated, and contains static references to static non-svg type image asset resources.
  static const image = _R_Image();

  /// This `R.svg` struct is generated, and contains static references to static svg type image asset resources.
  static const svg = _R_Svg();

  /// This `R.text` struct is generated, and contains static references to static text asset resources.
  static const text = _R_Text();

  /// This `R.fontFamily` struct is generated, and contains static references to static font asset resources.
  static const fontFamily = _R_FontFamily();
}
  CODE

  return code
end

.should_support_nullsafety ⇒ Object 



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# File 'lib/flr/util/code_util.rb', line 10

def self.should_support_nullsafety
  if @@should_support_nullsafety != nil
    return @@should_support_nullsafety
  end

  # $ flutter --version
  # Flutter 1.12.13+hotfix.5 • channel stable • https://github.com/flutter/flutter.git
  # Framework • revision 27321ebbad (5 weeks ago) • 2019-12-10 18:15:01 -0800
  # Engine • revision 2994f7e1e6
  # Tools • Dart 2.7.0
  flutter_version_result = `flutter --version`
  if (flutter_version_result.nil? == true || flutter_version_result.empty? == true)
    @@should_support_nullsafety = false
    return @@should_support_nullsafety
  end

  dart_version_str = flutter_version_result.split("Dart")[1]
  dart_version_str.strip!

  if Version.new(dart_version_str) >= Version.new("2.12.0")
    @@should_support_nullsafety = true
    return @@should_support_nullsafety
  end

  @@should_support_nullsafety = false
  return @@should_support_nullsafety
end