Libraries: Change enums to enum classes in LibArchive

Userland/Libraries/LibArchive/Zip.cpp

@@ -9,6 +9,11 @@
 
 namespace Archive {
 
+OutputStream& operator<<(OutputStream& stream, ZipCompressionMethod method)
+{
+    return stream << to_underlying(method);
+}
+
 bool Zip::find_end_of_central_directory_offset(ReadonlyBytes buffer, size_t& offset)
 {
     for (size_t backwards_offset = 0; backwards_offset <= UINT16_MAX; backwards_offset++) // the file may have a trailing comment of an arbitrary 16 bit length
@@ -90,7 +95,7 @@ bool Zip::for_each_member(Function<IterationDecision(const ZipMember&)> callback
         null_terminated_name[central_directory_record.name_length] = 0;
         member.name = String { null_terminated_name };
         member.compressed_data = { local_file_header.compressed_data, central_directory_record.compressed_size };
-        member.compression_method = static_cast<ZipCompressionMethod>(central_directory_record.compression_method);
+        member.compression_method = central_directory_record.compression_method;
         member.uncompressed_size = central_directory_record.uncompressed_size;
         member.crc32 = central_directory_record.crc32;
         member.is_directory = central_directory_record.external_attributes & zip_directory_external_attribute || member.name.ends_with('/'); // FIXME: better directory detection

Userland/Libraries/LibArchive/Zip.h

@@ -70,13 +70,27 @@ struct [[gnu::packed]] EndOfCentralDirectory {
     }
 };
 
+enum class ZipCompressionMethod : u16 {
+    Store = 0,
+    Shrink = 1,
+    Reduce1 = 2,
+    Reduce2 = 3,
+    Reduce3 = 4,
+    Reduce4 = 5,
+    Implode = 6,
+    Reserved = 7,
+    Deflate = 8
+};
+
+OutputStream& operator<<(OutputStream& stream, ZipCompressionMethod method);
+
 struct [[gnu::packed]] CentralDirectoryRecord {
     static constexpr Array<u8, signature_length> signature = { 0x50, 0x4b, 0x01, 0x02 }; // 'PK\x01\x02'
 
     u16 made_by_version;
     u16 minimum_version;
     u16 general_purpose_flags;
-    u16 compression_method;
+    ZipCompressionMethod compression_method;
     u16 modification_time;
     u16 modification_date;
     u32 crc32;
@@ -192,18 +206,6 @@ struct [[gnu::packed]] LocalFileHeader {
     }
 };
 
-enum ZipCompressionMethod : u16 {
-    Store = 0,
-    Shrink = 1,
-    Reduce1 = 2,
-    Reduce2 = 3,
-    Reduce3 = 4,
-    Reduce4 = 5,
-    Implode = 6,
-    Reserved = 7,
-    Deflate = 8
-};
-
 struct ZipMember {
     String name;
     ReadonlyBytes compressed_data; // TODO: maybe the decompression/compression should be handled by LibArchive instead of the user?