Added a tool to update and generate FontAwesomeIcons definition

Updated to FontAwesome 5.0.13

lib/_fonts.dart

+library font_awesome_flutter;
+
+import 'package:flutter/widgets.dart';
+
+class IconDataBrands extends IconData {
+  const IconDataBrands(int codePoint)
+      : super(
+          codePoint,
+          fontFamily: 'FontAwesomeBrands',
+          fontPackage: 'font_awesome_flutter',
+        );
+}
+
+class IconDataSolid extends IconData {
+  const IconDataSolid(int codePoint)
+      : super(
+          codePoint,
+          fontFamily: 'FontAwesomeSolid',
+          fontPackage: 'font_awesome_flutter',
+        );
+}
+
+class IconDataRegular extends IconData {
+  const IconDataRegular(int codePoint)
+      : super(
+          codePoint,
+          fontFamily: 'FontAwesomeRegular',
+          fontPackage: 'font_awesome_flutter',
+        );
+}

pubspec.yaml

@@ -8,6 +8,9 @@ dependencies:
   flutter:
     sdk: flutter
 
+dev_dependencies:
+  recase: "^1.0.0+1"
+
 flutter:
   fonts:
     - family: FontAwesomeBrands

tool/generate_font.dart

+import 'dart:convert';
+import 'dart:io';
+
+import 'package:recase/recase.dart';
+
+void main(List<String> arguments) {
+  var file = new File(arguments.first);
+
+  if (!file.existsSync()) {
+    print('Cannot find the file "${arguments.first}".');
+  }
+
+  var content = file.readAsStringSync();
+  Map<String, dynamic> icons = json.decode(content);
+
+  Map<String, String> iconDefinitions = {};
+
+  for (String iconName in icons.keys) {
+    var icon = icons[iconName];
+    var unicode = icon['unicode'];
+    List<String> styles = icon['styles'];
+
+    if (styles.length > 1) {
+      if (styles.contains('regular')) {
+        styles.remove('regular');
+        iconDefinitions[iconName] = generateIconDefinition(
+          iconName,
+          'regular',
+          unicode,
+        );
+      }
+
+      for (String style in styles) {
+        String name = '${style}_$iconName';
+        iconDefinitions[name] = generateIconDefinition(
+          name,
+          styles.first,
+          unicode,
+        );
+      }
+    } else {
+      iconDefinitions[iconName] = generateIconDefinition(
+        iconName,
+        styles.first,
+        unicode,
+      );
+    }
+  }
+
+  List<String> generatedOutput = [
+    'library font_awesome_flutter;',
+    '',
+    "import 'package:flutter/widgets.dart';",
+    "import '_fonts.dart';",
+    '',
+    '// THIS FILE IS AUTOMATICALLY GENERATED!',
+    '',
+    'class FontAwesomeIcons {',
+  ];
+
+  generatedOutput.addAll(iconDefinitions.values);
+
+  generatedOutput.add('}');
+
+  File output = new File('lib/font_awesome_flutter.dart');
+  output.writeAsStringSync(generatedOutput.join('\n'));
+}
+
+String generateIconDefinition(String iconName, String style, String unicode) {
+  style = '${style[0].toUpperCase()}${style.substring(1
+                                                      )}';
+  String iconDataSource = 'IconData${style}';
+
+  if (iconName == '500px') {
+    iconName = 'fiveHundredPx';
+  }
+
+  iconName = new ReCase(iconName).camelCase;
+
+  return 'static const IconData $iconName = const $iconDataSource(0x$unicode);';
+}

tool/update.sh

+#!/usr/bin/env bash
+
+pushd assets/
+
+curl -O "https://github.com/FortAwesome/Font-Awesome/raw/master/web-fonts-with-css/webfonts/fa-brands-400.ttf"
+curl -O "https://github.com/FortAwesome/Font-Awesome/raw/master/web-fonts-with-css/webfonts/fa-regular-400.ttf"
+curl -O "https://github.com/FortAwesome/Font-Awesome/raw/master/web-fonts-with-css/webfonts/fa-solid-900.ttf"
+
+popd
+
+curl -o /tmp/icons.json "https://raw.githubusercontent.com/FortAwesome/Font-Awesome/master/advanced-options/metadata/icons.json"
+
+dart ./tool/generate_font.dart /tmp/icons.json
+dartfmt -w ./lib/font_awesome_flutter.dart
+
+rm /tmp/icons.json