added charset attribute

sliemeobn · Jun 25, 2024 · e92923b · e92923b
1 parent fe837e0
commit e92923b
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Showing 2 changed files with 37 additions and 1 deletion.
diff --git a/Sources/Elementary/HtmlAttributes.swift b/Sources/Elementary/HtmlAttributes.swift
@@ -142,8 +142,37 @@ public extension HTMLAttribute where Tag: HTMLTrait.Attributes.autofocus {
     }
 }
 
-// form tag attributes
+// charset attribute
+public extension HTMLTrait.Attributes {
+    protocol charset {}
+}
+
+extension HTMLTag.meta: HTMLTrait.Attributes.charset {}
+extension HTMLTag.script: HTMLTrait.Attributes.charset {}
+
+public extension HTMLAttributeValue {
+    struct CharacterSet: ExpressibleByStringLiteral, RawRepresentable, Sendable, Equatable {
+        public var rawValue: String
+
+        public init(rawValue: String) {
+            self.rawValue = rawValue
+        }
+
+        public init(stringLiteral value: String) {
+            rawValue = value
+        }
+
+        public static var utf8: Self { "UTF-8" }
+    }
+}
 
+public extension HTMLAttribute where Tag: HTMLTrait.Attributes.charset {
+    static func charset(_ value: HTMLAttributeValue.CharacterSet) -> Self {
+        HTMLAttribute(name: "charset", value: value.rawValue)
+    }
+}
+
+// form tag attributes
 public extension HTMLAttribute where Tag == HTMLTag.form {
     struct Method: Sendable, Equatable {
         var value: String

diff --git a/Tests/ElementaryTests/AttributeRenderingTests.swift b/Tests/ElementaryTests/AttributeRenderingTests.swift
@@ -88,4 +88,11 @@ final class AttributeRenderingTests: XCTestCase {
             #"<p onblur="doIt()"></p>"#
         )
     }
+
+    func testRendersMetaCharset() {
+        HTMLAssertEqual(
+            meta(.charset(.utf8)),
+            #"<meta charset="UTF-8">"#
+        )
+    }
 }