Support charset detector for web

Makefile

@@ -1,4 +1,7 @@
 do_all_projects = for p in flutter_charset_detector*; do (cd $$p && $(1)); done
+jschardet_version := v3.0.0
+jschardet_url := https://raw.githubusercontent.com/aadsm/jschardet/$(jschardet_version)/dist/jschardet.min.js
+jschardet := flutter_charset_detector_web/lib/assets/web/jschardet.min.js
 
 .PHONY: deps
 deps: ## Fetch deps in all subprojects
@@ -20,6 +23,19 @@ analyze: ## Run analysis in all subprojects
 test: ## Run tests in all subprojects
 	for t in flutter_charset_detector*/test flutter_charset_detector*/*/test; do (cd $$t/.. && flutter test); done
 
+.PHONY: assets
+assets: ## Download vendor assets
+assets: $(jschardet)
+
+$(jschardet):
+	mkdir -p $(@D)
+	curl -o $(@) $(jschardet_url)
+
+.PHONY: clobber
+clobber: ## Delete all vendor files
+clobber:
+	rm -rf $(jschardet)
+
 .PHONY: help
 help: ## Show this help text
 	$(info usage: make [target])

flutter_charset_detector/example/.metadata

@@ -4,7 +4,27 @@
 # This file should be version controlled and should not be manually edited.
 
 version:
-  revision: 81a45ec2e5f80fa71d5135f1702ce540558b416d
-  channel: beta
+  revision: "1751123cde4ffad08ae27bdee4f8ddebd033fe76"
+  channel: "beta"
 
 project_type: app
+
+# Tracks metadata for the flutter migrate command
+migration:
+  platforms:
+    - platform: root
+      create_revision: 1751123cde4ffad08ae27bdee4f8ddebd033fe76
+      base_revision: 1751123cde4ffad08ae27bdee4f8ddebd033fe76
+    - platform: web
+      create_revision: 1751123cde4ffad08ae27bdee4f8ddebd033fe76
+      base_revision: 1751123cde4ffad08ae27bdee4f8ddebd033fe76
+
+  # User provided section
+
+  # List of Local paths (relative to this file) that should be
+  # ignored by the migrate tool.
+  #
+  # Files that are not part of the templates will be ignored by default.
+  unmanaged_files:
+    - 'lib/main.dart'
+    - 'ios/Runner.xcodeproj/project.pbxproj'

flutter_charset_detector/example/analysis_options.yaml

@@ -0,0 +1,4 @@
+include: package:flutter_lints/flutter.yaml
+
+linter:
+  rules:

flutter_charset_detector/example/pubspec.lock

@@ -98,6 +98,30 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  leak_tracker:
+    dependency: transitive
+    description:
+      name: leak_tracker
+      sha256: cdd14e3836065a1f6302a236ec8b5f700695c803c57ae11a1c84df31e6bcf831
+      url: "https://pub.dev"
+    source: hosted
+    version: "10.0.3"
+  leak_tracker_flutter_testing:
+    dependency: transitive
+    description:
+      name: leak_tracker_flutter_testing
+      sha256: "9b2ef90589911d665277464e0482b209d39882dffaaf4ef69a3561a3354b2ebc"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.2"
+  leak_tracker_testing:
+    dependency: transitive
+    description:
+      name: leak_tracker_testing
+      sha256: fd3cd66cb2bcd7b50dcd3b413af49d78051f809c8b3f6e047962765c15a0d23d
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.0"
   lints:
     dependency: transitive
     description:
@@ -110,42 +134,42 @@ packages:
     dependency: transitive
     description:
       name: matcher
-      sha256: "1803e76e6653768d64ed8ff2e1e67bea3ad4b923eb5c56a295c3e634bad5960e"
+      sha256: d2323aa2060500f906aa31a895b4030b6da3ebdcc5619d14ce1aada65cd161cb
       url: "https://pub.dev"
     source: hosted
-    version: "0.12.16"
+    version: "0.12.16+1"
   material_color_utilities:
     dependency: transitive
     description:
       name: material_color_utilities
-      sha256: "9528f2f296073ff54cb9fee677df673ace1218163c3bc7628093e7eed5203d41"
+      sha256: "0e0a020085b65b6083975e499759762399b4475f766c21668c4ecca34ea74e5a"
       url: "https://pub.dev"
     source: hosted
-    version: "0.5.0"
+    version: "0.8.0"
   meta:
     dependency: transitive
     description:
       name: meta
-      sha256: a6e590c838b18133bb482a2745ad77c5bb7715fb0451209e1a7567d416678b8e
+      sha256: d584fa6707a52763a52446f02cc621b077888fb63b93bbcb1143a7be5a0c0c04
       url: "https://pub.dev"
     source: hosted
-    version: "1.10.0"
+    version: "1.11.0"
   path:
     dependency: transitive
     description:
       name: path
-      sha256: "8829d8a55c13fc0e37127c29fedf290c102f4e40ae94ada574091fe0ff96c917"
+      sha256: "087ce49c3f0dc39180befefc60fdb4acd8f8620e5682fe2476afd0b3688bb4af"
       url: "https://pub.dev"
     source: hosted
-    version: "1.8.3"
+    version: "1.9.0"
   plugin_platform_interface:
     dependency: transitive
     description:
       name: plugin_platform_interface
-      sha256: da3fdfeccc4d4ff2da8f8c556704c08f912542c5fb3cf2233ed75372384a034d
+      sha256: "4820fbfdb9478b1ebae27888254d445073732dae3d6ea81f0b7e06d5dedc3f02"
       url: "https://pub.dev"
     source: hosted
-    version: "2.1.6"
+    version: "2.1.8"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -195,10 +219,10 @@ packages:
     dependency: transitive
     description:
       name: test_api
-      sha256: "5c2f730018264d276c20e4f1503fd1308dfbbae39ec8ee63c5236311ac06954b"
+      sha256: "9955ae474176f7ac8ee4e989dadfb411a58c30415bcfb648fa04b2b8a03afa7f"
       url: "https://pub.dev"
     source: hosted
-    version: "0.6.1"
+    version: "0.7.0"
   vector_math:
     dependency: transitive
     description:
@@ -207,14 +231,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.1.4"
-  web:
+  vm_service:
     dependency: transitive
     description:
-      name: web
-      sha256: "14f1f70c51119012600c5f1f60ca68efda5a9b6077748163c6af2893ec5df8fc"
+      name: vm_service
+      sha256: a2662fb1f114f4296cf3f5a50786a2d888268d7776cf681aa17d660ffa23b246
       url: "https://pub.dev"
     source: hosted
-    version: "0.2.1-beta"
+    version: "14.0.0"
 sdks:
-  dart: ">=3.2.0-157.0.dev <4.0.0"
-  flutter: ">=1.20.0"
+  dart: ">=3.2.0 <4.0.0"
+  flutter: ">=3.18.0-18.0.pre.54"

flutter_charset_detector/example/web/index.html

@@ -0,0 +1,60 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <!--
+    If you are serving your web app in a path other than the root, change the
+    href value below to reflect the base path you are serving from.
+
+    The path provided below has to start and end with a slash "/" in order for
+    it to work correctly.
+
+    For more details:
+    * https://developer.mozilla.org/en-US/docs/Web/HTML/Element/base
+
+    This is a placeholder for base href that will be replaced by the value of
+    the `--base-href` argument provided to `flutter build`.
+  -->
+  <base href="$FLUTTER_BASE_HREF">
+
+  <meta charset="UTF-8">
+  <meta content="IE=Edge" http-equiv="X-UA-Compatible">
+  <meta name="description" content="A new Flutter project.">
+
+  <!-- iOS meta tags & icons -->
+  <meta name="apple-mobile-web-app-capable" content="yes">
+  <meta name="apple-mobile-web-app-status-bar-style" content="black">
+  <meta name="apple-mobile-web-app-title" content="example">
+  <link rel="apple-touch-icon" href="icons/Icon-192.png">
+
+  <!-- Favicon -->
+  <link rel="icon" type="image/png" href="favicon.png"/>
+
+  <title>example</title>
+  <link rel="manifest" href="manifest.json">
+
+  <script>
+    // The value below is injected by flutter build, do not touch.
+    const serviceWorkerVersion = null;
+  </script>
+  <!-- This script adds the flutter initialization JS code -->
+  <script src="flutter.js" defer></script>
+  <script type="application/javascript" src="/assets/packages/flutter_charset_detector_web/assets/web/jschardet.min.js" defer></script>
+</head>
+<body>
+  <script>
+    window.addEventListener('load', function(ev) {
+      // Download main.dart.js
+      _flutter.loader.loadEntrypoint({
+        serviceWorker: {
+          serviceWorkerVersion: serviceWorkerVersion,
+        },
+        onEntrypointLoaded: function(engineInitializer) {
+          engineInitializer.initializeEngine().then(function(appRunner) {
+            appRunner.runApp();
+          });
+        }
+      });
+    });
+  </script>
+</body>
+</html>

flutter_charset_detector/example/web/manifest.json

@@ -0,0 +1,35 @@
+{
+    "name": "example",
+    "short_name": "example",
+    "start_url": ".",
+    "display": "standalone",
+    "background_color": "#0175C2",
+    "theme_color": "#0175C2",
+    "description": "A new Flutter project.",
+    "orientation": "portrait-primary",
+    "prefer_related_applications": false,
+    "icons": [
+        {
+            "src": "icons/Icon-192.png",
+            "sizes": "192x192",
+            "type": "image/png"
+        },
+        {
+            "src": "icons/Icon-512.png",
+            "sizes": "512x512",
+            "type": "image/png"
+        },
+        {
+            "src": "icons/Icon-maskable-192.png",
+            "sizes": "192x192",
+            "type": "image/png",
+            "purpose": "maskable"
+        },
+        {
+            "src": "icons/Icon-maskable-512.png",
+            "sizes": "512x512",
+            "type": "image/png",
+            "purpose": "maskable"
+        }
+    ]
+}