[TAR] Rename the second argument of TarWriter.init to force

This is for consistency with TarContainer.create.

Sources/TAR/TarWriter.swift

@@ -13,7 +13,7 @@ public struct TarWriter {
     private var longLinkNameCounter: UInt
     private var localPaxHeaderCounter: UInt
 
-    public init(fileHandle: FileHandle, format: TarContainer.Format = .pax) {
+    public init(fileHandle: FileHandle, force format: TarContainer.Format = .pax) {
         self.handle = fileHandle
         self.format = format
         self.longNameCounter = 0

Sources/swcomp/Containers/TarCommand.swift

@@ -210,7 +210,7 @@ class TarCommand: Command {
                 let outputURL = URL(fileURLWithPath: self.input)
                 try "".write(to: outputURL, atomically: true, encoding: .utf8)
                 let handle = try FileHandle(forWritingTo: outputURL)
-                var writer = TarWriter(fileHandle: handle, format: self.useFormat ?? .pax)
+                var writer = TarWriter(fileHandle: handle, force: self.useFormat ?? .pax)
                 try TarEntry.generateEntries(&writer, inputPath, verbose)
                 try writer.finalize()
                 try handle.closeHandleCompat()

Tests/TarWriterTests.swift

@@ -31,7 +31,7 @@ class TarWriterTests: XCTestCase {
         let tempFileUrl = tempDir.appendingPathComponent(UUID().uuidString, isDirectory: false)
         try "".write(to: tempFileUrl, atomically: true, encoding: .utf8)
         let handle = try FileHandle(forWritingTo: tempFileUrl)
-        var writer = TarWriter(fileHandle: handle, format: format)
+        var writer = TarWriter(fileHandle: handle, force: format)
         for entry in entries {
             try writer.append(entry)
         }