fluffychat/lib/views/log_view.dart
2021-02-20 07:40:42 +01:00

187 lines
4.5 KiB
Dart

import 'package:famedlysdk/famedlysdk.dart';
import 'package:flutter/material.dart';
import 'package:logger/logger.dart';
import 'package:flutter_gen/gen_l10n/l10n.dart';
class LogViewer extends StatefulWidget {
@override
_LogViewerState createState() => _LogViewerState();
}
class _LogViewerState extends State<LogViewer> {
Level logLevel = Level.debug;
double fontSize = 14;
@override
Widget build(BuildContext context) {
final outputEvents = Logs()
.outputEvents
.where((e) => e.level.index >= logLevel.index)
.toList();
return Scaffold(
backgroundColor: Colors.black,
appBar: AppBar(
title: Text(logLevel.toString()),
leading: BackButton(),
actions: [
IconButton(
icon: Icon(Icons.zoom_in_outlined),
onPressed: () => setState(() => fontSize++),
tooltip: L10n.of(context).zoomIn,
),
IconButton(
icon: Icon(Icons.zoom_out_outlined),
onPressed: () => setState(() => fontSize--),
tooltip: L10n.of(context).zoomOut,
),
PopupMenuButton<Level>(
itemBuilder: (context) => Level.values
.map((level) => PopupMenuItem(
child: Text(level.toString()),
value: level,
))
.toList(),
onSelected: (Level level) => setState(() => logLevel = level),
),
],
),
body: ListView.builder(
itemCount: outputEvents.length,
itemBuilder: (context, i) => SingleChildScrollView(
scrollDirection: Axis.horizontal,
child: RichText(
text: TextSpan(
style: TextStyle(fontSize: fontSize),
children: _AnsiParser(outputEvents[i].lines.join('\n')).spans,
),
),
),
),
);
}
}
class _AnsiParser {
static const TEXT = 0, BRACKET = 1, CODE = 2;
final String text;
Color foreground;
Color background;
List<TextSpan> spans;
_AnsiParser(this.text) {
final s = this.text;
spans = [];
var state = TEXT;
StringBuffer buffer;
var text = StringBuffer();
var code = 0;
List<int> codes;
for (var i = 0, n = s.length; i < n; i++) {
var c = s[i];
switch (state) {
case TEXT:
if (c == '\u001b') {
state = BRACKET;
buffer = StringBuffer(c);
code = 0;
codes = [];
} else {
text.write(c);
}
break;
case BRACKET:
buffer.write(c);
if (c == '[') {
state = CODE;
} else {
state = TEXT;
text.write(buffer);
}
break;
case CODE:
buffer.write(c);
var codeUnit = c.codeUnitAt(0);
if (codeUnit >= 48 && codeUnit <= 57) {
code = code * 10 + codeUnit - 48;
continue;
} else if (c == ';') {
codes.add(code);
code = 0;
continue;
} else {
if (text.isNotEmpty) {
spans.add(createSpan(text.toString()));
text.clear();
}
state = TEXT;
if (c == 'm') {
codes.add(code);
handleCodes(codes);
} else {
text.write(buffer);
}
}
break;
}
}
spans.add(createSpan(text.toString()));
}
void handleCodes(List<int> codes) {
if (codes.isEmpty) {
codes.add(0);
}
switch (codes[0]) {
case 0:
foreground = getColor(0, true);
background = getColor(0, false);
break;
case 38:
foreground = getColor(codes[2], true);
break;
case 39:
foreground = getColor(0, true);
break;
case 48:
background = getColor(codes[2], false);
break;
case 49:
background = getColor(0, false);
}
}
Color getColor(int colorCode, bool foreground) {
switch (colorCode) {
case 0:
return foreground ? Colors.black : Colors.transparent;
case 12:
return Colors.lightBlue[300];
case 208:
return Colors.orange[300];
case 196:
return Colors.red[300];
case 199:
return Colors.pink[300];
default:
return Colors.white;
}
}
TextSpan createSpan(String text) {
return TextSpan(
text: text,
style: TextStyle(
color: foreground,
backgroundColor: background,
),
);
}
}