Remove Splash syntax highlighter dependencyremove-splash-highlighter

Splash only highlights Swift, leaving every other language unhighlighted.
Drop the dependency entirely and render file contents as plain text until a
broader-coverage highlighter is adopted.

- Remove `import Splash` and the Splash-backed theming in FileTreeView
- Simplify CodeSyntaxHighlighter to emit plain attributed text
- Remove the Splash SwiftPM package reference and product dependency

Refs https://github.com/zerolabsco/hutch/issues/16

Co-Authored-By: Claude Opus 4.8 <[email protected]>

3 files changed, 1 insertions, 71 deletions

diff --git a/Hutch.xcodeproj/project.pbxproj b/Hutch.xcodeproj/project.pbxproj
index 409df4b..5e410eb 100644
--- a/Hutch.xcodeproj/project.pbxproj
+++ b/Hutch.xcodeproj/project.pbxproj
@@ -20,7 +20,6 @@
 		8BE082012F80000100000001 /* HutchWidgetExtension.appex in Embed Foundation Extensions */ = {isa = PBXBuildFile; fileRef = 8BE081F62F80000100000001 /* HutchWidgetExtension.appex */; settings = {ATTRIBUTES = (RemoveHeadersOnCopy, ); }; };
 		8BE083012F81000100000001 /* HutchSafariExtension.appex in Embed Foundation Extensions */ = {isa = PBXBuildFile; fileRef = 8BE083032F81000100000001 /* HutchSafariExtension.appex */; settings = {ATTRIBUTES = (RemoveHeadersOnCopy, ); }; };
 		8BF100032F9A000100000001 /* Markdown in Frameworks */ = {isa = PBXBuildFile; productRef = 8BF100022F9A000100000001 /* Markdown */; };
-		8BF100052F9A000100000002 /* Splash in Frameworks */ = {isa = PBXBuildFile; productRef = 8BF100042F9A000100000002 /* Splash */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -149,7 +148,6 @@
 			buildActionMask = 2147483647;
 			files = (
 				8BF100032F9A000100000001 /* Markdown in Frameworks */,
-				8BF100052F9A000100000002 /* Splash in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -254,7 +252,6 @@
 			name = Hutch;
 			packageProductDependencies = (
 				8BF100022F9A000100000001 /* Markdown */,
-				8BF100042F9A000100000002 /* Splash */,
 			);
 			productName = Hutch;
 			productReference = 8B4B28D12F6704280045FA19 /* Hutch.app */;
@@ -361,7 +358,6 @@
 			minimizedProjectReferenceProxies = 1;
 			packageReferences = (
 				8BF100012F9A000100000001 /* XCRemoteSwiftPackageReference "swift-markdown" */,
-				8BF100062F9A000100000002 /* XCRemoteSwiftPackageReference "Splash" */,
 			);
 			preferredProjectObjectVersion = 77;
 			productRefGroup = 8B4B28D22F6704280045FA19 /* Products */;
@@ -883,14 +879,6 @@
 				minimumVersion = 0.8.0;
 			};
 		};
-		8BF100062F9A000100000002 /* XCRemoteSwiftPackageReference "Splash" */ = {
-			isa = XCRemoteSwiftPackageReference;
-			repositoryURL = "https://github.com/JohnSundell/Splash";
-			requirement = {
-				kind = upToNextMajorVersion;
-				minimumVersion = 0.16.0;
-			};
-		};
 /* End XCRemoteSwiftPackageReference section */
 
 /* Begin XCSwiftPackageProductDependency section */
@@ -899,11 +887,6 @@
 			package = 8BF100012F9A000100000001 /* XCRemoteSwiftPackageReference "swift-markdown" */;
 			productName = Markdown;
 		};
-		8BF100042F9A000100000002 /* Splash */ = {
-			isa = XCSwiftPackageProductDependency;
-			package = 8BF100062F9A000100000002 /* XCRemoteSwiftPackageReference "Splash" */;
-			productName = Splash;
-		};
 /* End XCSwiftPackageProductDependency section */
 	};
 	rootObject = 8B4B28C92F6704280045FA19 /* Project object */;
diff --git a/Hutch.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved b/Hutch.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved
index 55263b9..417e4d7 100644
--- a/Hutch.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved
+++ b/Hutch.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved
@@ -2,15 +2,6 @@
   "originHash" : "65542d8a5fbbad8dd7d07c8901c1cc48b3aba12cef8da1f062bd28d9b3a6ba50",
   "pins" : [
     {
-      "identity" : "splash",
-      "kind" : "remoteSourceControl",
-      "location" : "https://github.com/JohnSundell/Splash",
-      "state" : {
-        "revision" : "7f4df436eb78fe64fe2c32c58006e9949fa28ad8",
-        "version" : "0.16.0"
-      }
-    },
-    {
       "identity" : "swift-cmark",
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/swiftlang/swift-cmark.git",
diff --git a/Hutch/Views/Repositories/FileTreeView.swift b/Hutch/Views/Repositories/FileTreeView.swift
index b49f361..7bfce17 100644
--- a/Hutch/Views/Repositories/FileTreeView.swift
+++ b/Hutch/Views/Repositories/FileTreeView.swift
@@ -1,4 +1,3 @@
-import Splash
 import SwiftUI
 import UIKit
 
@@ -739,39 +738,7 @@ private struct CodeFileLineData {
 }
 
 private enum CodeSyntaxHighlighter {
-    static func attributedText(for text: String, fileName: String, font: UIFont) -> NSAttributedString {
-        guard supportsSplashHighlighting(fileName: fileName) else {
-            return plainText(text, font: font)
-        }
-
-        var splashFont = Font(size: Double(font.pointSize))
-        splashFont.resource = .preloaded(font)
-
-        let theme = Theme(
-            font: splashFont,
-            plainTextColor: .label,
-            tokenColors: [
-                .keyword: .systemPink,
-                .string: .systemRed,
-                .type: .systemTeal,
-                .call: .systemBlue,
-                .number: .systemPurple,
-                .comment: .secondaryLabel,
-                .property: .systemGreen,
-                .dotAccess: .systemIndigo,
-                .preprocessing: .systemOrange
-            ],
-            backgroundColor: .clear
-        )
-
-        let highlighted = SyntaxHighlighter(
-            format: AttributedStringOutputFormat(theme: theme)
-        ).highlight(text)
-
-        return NSMutableAttributedString(attributedString: highlighted)
-    }
-
-    private static func plainText(_ text: String, font: UIFont) -> NSAttributedString {
+    static func attributedText(for text: String, fileName _: String, font: UIFont) -> NSAttributedString {
         NSAttributedString(
             string: text,
             attributes: [
@@ -780,17 +747,6 @@ private enum CodeSyntaxHighlighter {
             ]
         )
     }
-
-    private static func supportsSplashHighlighting(fileName: String) -> Bool {
-        let supportedExtensions: Set<String> = [
-            "swift",
-            "swiftinterface",
-            "playground"
-        ]
-        return supportedExtensions.contains(
-            (fileName as NSString).pathExtension.lowercased()
-        )
-    }
 }
 
 // MARK: - Tree Entry Row