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59a8ef3a21
When `const LocalPlatform` is used immediately and not passed as a dependency it does not have utility over the static properties from `dart:io`. Remove these uses to reduce the noise around how the instantiable `Platform` class is used.
111 lines
2.3 KiB
Dart
111 lines
2.3 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'dart:io';
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import 'package:path/path.dart' as path;
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/// The location of the Flutter root directory, based on the known location of
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/// this script.
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final Directory flutterRoot = Directory(path.dirname(Platform.script.toFilePath())).parent.parent.parent.parent;
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/// Converts `FOO_BAR` to `fooBar`.
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String shoutingToLowerCamel(String shouting) {
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final RegExp initialLetter = RegExp(r'_([^_])([^_]*)');
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final String snake = shouting.toLowerCase();
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final String result = snake.replaceAllMapped(initialLetter, (Match match) {
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return match.group(1).toUpperCase() + match.group(2).toLowerCase();
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});
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return result;
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}
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/// Converts 'FooBar' to 'fooBar'.
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String upperCamelToLowerCamel(String upperCamel) {
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return upperCamel.substring(0, 1).toLowerCase() + upperCamel.substring(1);
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}
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/// Converts 'fooBar' to 'FooBar'.
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String lowerCamelToUpperCamel(String lowerCamel) {
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return lowerCamel.substring(0, 1).toUpperCase() + lowerCamel.substring(1);
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}
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/// A list of Dart reserved words.
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///
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/// Since these are Dart reserved words, we can't use them as-is for enum names.
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const List<String> kDartReservedWords = <String>[
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'abstract',
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'as',
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'assert',
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'async',
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'await',
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'break',
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'case',
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'catch',
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'class',
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'const',
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'continue',
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'covariant',
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'default',
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'deferred',
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'do',
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'dynamic',
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'else',
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'enum',
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'export',
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'extends',
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'external',
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'factory',
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'false',
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'final',
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'finally',
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'for',
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'Function',
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'get',
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'hide',
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'if',
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'implements',
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'import',
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'in',
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'interface',
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'is',
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'library',
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'mixin',
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'new',
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'null',
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'on',
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'operator',
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'part',
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'rethrow',
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'return',
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'set',
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'show',
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'static',
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'super',
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'switch',
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'sync',
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'this',
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'throw',
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'true',
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'try',
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'typedef',
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'var',
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'void',
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'while',
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'with',
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'yield',
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];
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/// Converts an integer into a hex string with the given number of digits.
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String toHex(int value, {int digits = 8}) {
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if (value == null) {
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return 'null';
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}
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return '0x${value.toRadixString(16).padLeft(digits, '0')}';
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}
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/// Parses an integer from a hex string.
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int getHex(String input) {
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return int.parse(input, radix: 16);
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}
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