Merge pull request #3 from rizwankce/fix-linux-test

Fix linux test

.github/workflows/ci.yml

@@ -0,0 +1,33 @@
+name: CI
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+jobs:
+  macos:
+    runs-on: macOS-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+      - name: Build and Test
+        run: swift test
+  linux:
+      runs-on: ubuntu-latest
+
+      strategy:
+        matrix:
+          swift: ["5.2"]
+
+      container:
+        image: swift:${{ matrix.swift }}
+
+      steps:
+        - name: Checkout
+          uses: actions/checkout@v1
+        - name: Build
+          run: swift build
+        - name: Test
+          run: swift test --enable-test-discovery

Sources/UnicodeURL/String+Unicode.swift

@@ -20,15 +20,15 @@ extension String {
         var pendingSurrogateHigh = false
 
         for index in 0..<length {
-            let c = buffer[index]
-            if CFStringIsSurrogateHighCharacter(unichar(c)) {
+            let c = unichar(truncatingIfNeeded: buffer[index])
+            if CFStringIsSurrogateHighCharacter(c) {
                 if pendingSurrogateHigh {
                     // Surrogate high after surrogate high
                     return false
                 } else {
                     pendingSurrogateHigh = true
                 }
-            } else if CFStringIsSurrogateLowCharacter(unichar(c)) {
+            } else if CFStringIsSurrogateLowCharacter(c) {
                 if pendingSurrogateHigh {
                     pendingSurrogateHigh = false
                 } else {
@@ -72,8 +72,7 @@ extension String {
         var index = self.startIndex
 
         while index != self.endIndex {
-            let set = CharacterSet(charactersIn: "\(self[index])")
-            if chars.isSuperset(of: set) {
+            if chars.contains(self[index]) {
                 break
             }
             index = self.index(index, offsetBy: 1)
@@ -85,3 +84,10 @@ extension String {
         ]
     }
 }
+
+extension CharacterSet {
+    func contains(_ character: Character) -> Bool {
+        let string = String(character)
+        return string.rangeOfCharacter(from: self, options: [], range: string.startIndex..<string.endIndex) != nil
+    }
+}