[VFS] Add support for loading ZArchive files

src/xenia/vfs/devices/disc_zarchive_entry.cc

@@ -0,0 +1,50 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2020 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include "xenia/vfs/devices/disc_zarchive_entry.h"
+
+#include <algorithm>
+
+#include "xenia/base/math.h"
+#include "xenia/vfs/devices/disc_zarchive_file.h"
+
+#include "third_party/zarchive/include/zarchive/zarchivereader.h"
+namespace xe {
+namespace vfs {
+
+DiscZarchiveEntry::DiscZarchiveEntry(Device* device, Entry* parent,
+                                     const std::string_view path, void* opaque)
+    : Entry(device, parent, path),
+      opaque_(opaque),
+      data_offset_(0),
+      data_size_(0),
+      handle_(ZARCHIVE_INVALID_NODE) {}
+
+DiscZarchiveEntry::~DiscZarchiveEntry() = default;
+
+std::unique_ptr<DiscZarchiveEntry> DiscZarchiveEntry::Create(
+    Device* device, Entry* parent, const std::string_view name, void* opaque) {
+  auto path = name;  // xe::utf8::join_guest_paths(parent->path(), name);
+  auto entry =
+      std::make_unique<DiscZarchiveEntry>(device, parent, path, opaque);
+  return std::move(entry);
+}
+
+X_STATUS DiscZarchiveEntry::Open(uint32_t desired_access, File** out_file) {
+  *out_file = new DiscZarchiveFile(desired_access, this);
+  return X_STATUS_SUCCESS;
+}
+
+std::unique_ptr<MappedMemory> DiscZarchiveEntry::OpenMapped(
+    MappedMemory::Mode mode, size_t offset, size_t length) {
+  return nullptr;
+}
+
+}  // namespace vfs
+}  // namespace xe