Import IKAR messenger client and server

2026-10-07 22:06:07 +03:00
commit 69ea5091eb
1951 changed files with 424546 additions and 0 deletions
@@ -0,0 +1,121 @@
+import 'dart:typed_data';
+
+import 'package:flutter_test/flutter_test.dart';
+import 'package:ikar/core/config/font_file_info.dart';
+
+typedef _Name = ({int platform, int language, int nameId, List<int> bytes});
+
+List<int> _utf16be(String s) => [
+  for (final unit in s.codeUnits) ...[unit >> 8, unit & 0xff],
+];
+
+Uint8List _nameTable(List<_Name> names) {
+  final storage = <int>[];
+  final records = _Bytes();
+  for (final name in names) {
+    records
+      ..u16(name.platform)
+      ..u16(name.platform == 3 ? 1 : 0)
+      ..u16(name.language)
+      ..u16(name.nameId)
+      ..u16(name.bytes.length)
+      ..u16(storage.length);
+    storage.addAll(name.bytes);
+  }
+  return (_Bytes()
+        ..u16(0)
+        ..u16(names.length)
+        ..u16(6 + names.length * 12)
+        ..addAll(records.bytes)
+        ..addAll(storage))
+      .toBytes();
+}
+
+Uint8List _font(List<_Name> names, {bool collection = false}) {
+  final table = _nameTable(names);
+  final headerSize = collection ? 16 : 0;
+  final fontOffset = headerSize;
+  final tableOffset = fontOffset + 12 + 16;
+  final out = _Bytes();
+  if (collection) {
+    out
+      ..u32(0x74746366)
+      ..u32(0x00010000)
+      ..u32(1)
+      ..u32(fontOffset);
+  }
+  out
+    ..u32(0x00010000)
+    ..u16(1)
+    ..u16(16)
+    ..u16(0)
+    ..u16(0)
+    ..addAll('name'.codeUnits)
+    ..u32(0)
+    ..u32(tableOffset)
+    ..u32(table.length)
+    ..addAll(table);
+  return out.toBytes();
+}
+
+class _Bytes {
+  final List<int> bytes = [];
+
+  void u16(int v) => bytes.addAll([(v >> 8) & 0xff, v & 0xff]);
+
+  void u32(int v) => bytes.addAll([
+    (v >> 24) & 0xff,
+    (v >> 16) & 0xff,
+    (v >> 8) & 0xff,
+    v & 0xff,
+  ]);
+
+  void addAll(Iterable<int> values) => bytes.addAll(values);
+
+  Uint8List toBytes() => Uint8List.fromList(bytes);
+}
+
+void main() {
+  test('the typographic family wins over the legacy one', () {
+    final font = _font([
+      (platform: 3, language: 0x0409, nameId: 1, bytes: _utf16be('Synth Bold')),
+      (platform: 3, language: 0x0409, nameId: 16, bytes: _utf16be('Synth')),
+    ]);
+    expect(FontFileInfo.familyName(font), 'Synth');
+  });
+
+  test('the English Windows name is preferred, others are a fallback', () {
+    final font = _font([
+      (platform: 1, language: 0, nameId: 1, bytes: 'Mac Synth'.codeUnits),
+      (platform: 3, language: 0x0419, nameId: 1, bytes: _utf16be('Синтез')),
+      (platform: 3, language: 0x0409, nameId: 1, bytes: _utf16be('Synth')),
+    ]);
+    expect(FontFileInfo.familyName(font), 'Synth');
+
+    final onlyRussian = _font([
+      (platform: 3, language: 0x0419, nameId: 1, bytes: _utf16be('Синтез')),
+    ]);
+    expect(FontFileInfo.familyName(onlyRussian), 'Синтез');
+  });
+
+  test('a collection is read from its first font', () {
+    final font = _font([
+      (platform: 3, language: 0x0409, nameId: 1, bytes: _utf16be('Synth')),
+    ], collection: true);
+    expect(FontFileInfo.familyName(font), 'Synth');
+  });
+
+  test('garbage has no family name', () {
+    expect(FontFileInfo.familyName(Uint8List.fromList([1, 2, 3])), isNull);
+    expect(FontFileInfo.familyName(_font(const [])), isNull);
+  });
+
+  test('the file name loses its style suffix and separators', () {
+    expect(FontFileInfo.familyFromFileName('/tmp/Synth-Regular.ttf'), 'Synth');
+    expect(
+      FontFileInfo.familyFromFileName('Synth_Sans-VariableFont_wght.ttf'),
+      'Synth Sans',
+    );
+    expect(FontFileInfo.familyFromFileName('Mono.otf'), 'Mono');
+  });
+}