Renaming xe::fs to xe::filesystem and xe::kernel::fs to xe::vfs.

Progress on #294.

src/xenia/vfs/devices/disc_image_device.cc

@@ -0,0 +1,68 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include "xenia/vfs/devices/disc_image_device.h"
+
+#include "xenia/base/logging.h"
+#include "xenia/base/math.h"
+#include "xenia/vfs/gdfx.h"
+#include "xenia/vfs/devices/disc_image_entry.h"
+
+namespace xe {
+namespace vfs {
+
+DiscImageDevice::DiscImageDevice(const std::string& path,
+                                 const std::wstring& local_path)
+    : Device(path), local_path_(local_path), gdfx_(nullptr) {}
+
+DiscImageDevice::~DiscImageDevice() { delete gdfx_; }
+
+int DiscImageDevice::Init() {
+  mmap_ = MappedMemory::Open(local_path_, MappedMemory::Mode::kRead);
+  if (!mmap_) {
+    XELOGE("Disc image could not be mapped");
+    return 1;
+  }
+
+  gdfx_ = new GDFX(mmap_.get());
+  GDFX::Error error = gdfx_->Load();
+  if (error != GDFX::kSuccess) {
+    XELOGE("GDFX init failed: %d", error);
+    return 1;
+  }
+
+  // gdfx_->Dump();
+
+  return 0;
+}
+
+std::unique_ptr<Entry> DiscImageDevice::ResolvePath(const char* path) {
+  // The filesystem will have stripped our prefix off already, so the path will
+  // be in the form:
+  // some\PATH.foo
+
+  XELOGFS("DiscImageDevice::ResolvePath(%s)", path);
+
+  GDFXEntry* gdfx_entry = gdfx_->root_entry();
+
+  // Walk the path, one separator at a time.
+  auto path_parts = xe::split_path(path);
+  for (auto& part : path_parts) {
+    gdfx_entry = gdfx_entry->GetChild(part.c_str());
+    if (!gdfx_entry) {
+      // Not found.
+      return nullptr;
+    }
+  }
+
+  return std::make_unique<DiscImageEntry>(this, path, mmap_.get(), gdfx_entry);
+}
+
+}  // namespace vfs
+}  // namespace xe