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Use format detector feature for TextViewer
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This commit is contained in:
ema
2025-06-19 16:38:27 +08:00
parent a580926059
commit efc83b0669
10 changed files with 496 additions and 218 deletions
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107
QuickLook.Plugin/QuickLook.Plugin.TextViewer/TextViewerPanel.cs
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@@ -17,35 +17,29 @@
using ICSharpCode.AvalonEdit;
using ICSharpCode.AvalonEdit.Document;
using ICSharpCode.AvalonEdit.Highlighting;
using ICSharpCode.AvalonEdit.Rendering;
using ICSharpCode.AvalonEdit.Search;
using QuickLook.Common.Helpers;
using QuickLook.Common.Plugin;
using QuickLook.Plugin.TextViewer.Detectors;
using QuickLook.Plugin.TextViewer.Themes;
using System;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Controls;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Threading;
using UtfUnknown;
namespace QuickLook.Plugin.TextViewer;
public class TextViewerPanel : TextEditor, IDisposable
public partial class TextViewerPanel : TextEditor, IDisposable
{
private readonly ContextObject _context;
private bool _disposed;
private HighlightingManager highlightingManager = HighlightingManager.Instance;
public TextViewerPanel(string path, ContextObject context)
public TextViewerPanel()
{
_context = context;
FontSize = 14;
ShowLineNumbers = true;
WordWrap = true;
@@ -79,14 +73,6 @@ public class TextViewerPanel : TextEditor, IDisposable
TextArea.TextView.ElementGenerators.Add(new TruncateLongLines());
SearchPanel.Install(this);
LoadFileAsync(path);
}
public HighlightingManager HighlightingManager
{
get => highlightingManager;
set => highlightingManager = value;
}
public void Dispose()
@@ -146,7 +132,7 @@ public class TextViewerPanel : TextEditor, IDisposable
}
}
private void LoadFileAsync(string path)
public void LoadFileAsync(string path, ContextObject context)
{
_ = Task.Run(() =>
{
@@ -173,15 +159,14 @@ public class TextViewerPanel : TextEditor, IDisposable
return;
if (fileTooLong)
_context.Title += " (0 ~ 5MB)";
context.Title += " (0 ~ 5MB)";
var bufferCopy = buffer.ToArray();
buffer.Dispose();
var result = CharsetDetector.DetectFromBytes(bufferCopy);
var encoding = result.DoubleDetectFromResult(bufferCopy); // Fix issues
var doc = new TextDocument(encoding.GetString(bufferCopy));
var encoding = EncodingDetector.DetectFromBytes(bufferCopy);
var text = encoding.GetString(bufferCopy);
var doc = new TextDocument(text);
doc.SetOwnerThread(Dispatcher.Thread);
if (_disposed)
@@ -189,68 +174,30 @@ public class TextViewerPanel : TextEditor, IDisposable
Dispatcher.BeginInvoke(() =>
{
var extension = Path.GetExtension(path);
var highlighting = HighlightingThemeManager.GetHighlightingByExtensionOrDetector(extension, text);
Encoding = encoding;
SyntaxHighlighting = bufferCopy.Length > maxHighlightingLength
? null
: HighlightingManager?.GetDefinitionByExtension(Path.GetExtension(path));
: highlighting.SyntaxHighlighting;
Document = doc;
_context.IsBusy = false;
if (highlighting.IsDark)
{
Background = Brushes.Transparent;
SetResourceReference(ForegroundProperty, "WindowTextForeground");
}
else
{
// if os dark mode, but not AllowDarkTheme, make background light
Background = OSThemeHelper.AppsUseDarkTheme()
? new SolidColorBrush(Color.FromArgb(175, 255, 255, 255))
: Brushes.Transparent;
}
context.IsBusy = false;
}, DispatcherPriority.Render);
});
}
}
file static class DetectionExtensions
{
public static Encoding DoubleDetectFromResult(this DetectionResult result, byte[] buffer)
{
// Determine the highest confidence encoding, or fallback to ANSI
var encoding = result.Detected?.Encoding ?? Encoding.Default;
// When mixing encodings, one of the encodings may gain higher confidence
// In this case, we should return to encodings UTF8 / UTF32 / ANSI
// https://github.com/QL-Win/QuickLook/issues/769
if (encoding != Encoding.UTF8 && encoding != Encoding.UTF32 && encoding != Encoding.Default)
{
if (result.Details.Any(detail => detail.Encoding == Encoding.UTF8))
{
encoding = Encoding.UTF8;
}
else if (result.Details.Any(detail => detail.Encoding == Encoding.UTF32))
{
encoding = Encoding.UTF32;
}
else if (result.Details.Any(detail => detail.Encoding == Encoding.Default))
{
encoding = Encoding.Default;
}
}
// When the text is too short and lacks a BOM
// In this case, we should fallback to an encoding if it is not recognized as UTF8 / UTF32 / ANSI
// https://github.com/QL-Win/QuickLook/issues/471
// https://github.com/QL-Win/QuickLook/issues/600
// https://github.com/QL-Win/QuickLook/issues/954
if (buffer.Length <= 50)
{
if (encoding != Encoding.UTF8 && encoding != Encoding.UTF32 && encoding != Encoding.Default)
{
if (!Encoding.UTF8.GetString(buffer).Contains("\uFFFD"))
{
encoding = Encoding.UTF8;
}
else if (!Encoding.UTF32.GetString(buffer).Contains("\uFFFD"))
{
encoding = Encoding.UTF32;
}
else if (!Encoding.Default.GetString(buffer).Contains("\uFFFD"))
{
encoding = Encoding.Default;
}
}
}
return encoding;
}
}