Refactoring vfs to remove a lot of duplicated code.

Progress on #294.

src/xenia/vfs/entry.cc

@@ -16,7 +16,14 @@ namespace xe {
 namespace vfs {
 
 Entry::Entry(Device* device, const std::string& path)
-    : device_(device), path_(path) {
+    : device_(device),
+      path_(path),
+      attributes_(0),
+      size_(0),
+      allocation_size_(0),
+      create_timestamp_(0),
+      access_timestamp_(0),
+      write_timestamp_(0) {
   assert_not_null(device);
   absolute_path_ = xe::join_paths(device->mount_path(), path);
   name_ = xe::find_name_from_path(path);
@@ -24,7 +31,40 @@ Entry::Entry(Device* device, const std::string& path)
 
 Entry::~Entry() = default;
 
+void Entry::Dump(xe::StringBuffer* string_buffer, int indent) {
+  for (int i = 0; i < indent; ++i) {
+    string_buffer->Append(' ');
+  }
+  string_buffer->Append(name());
+  string_buffer->Append('\n');
+  for (auto& child : children_) {
+    child->Dump(string_buffer, indent + 2);
+  }
+}
+
 bool Entry::is_read_only() const { return device_->is_read_only(); }
 
+Entry* Entry::GetChild(std::string name) {
+  // TODO(benvanik): a faster search
+  for (auto& child : children_) {
+    if (strcasecmp(child->name().c_str(), name.c_str()) == 0) {
+      return child.get();
+    }
+  }
+  return nullptr;
+}
+
+Entry* Entry::IterateChildren(const xe::filesystem::WildcardEngine& engine,
+                              size_t* current_index) {
+  while (*current_index < children_.size()) {
+    auto& child = children_[*current_index];
+    *current_index = *current_index + 1;
+    if (engine.Match(child->name())) {
+      return child.get();
+    }
+  }
+  return nullptr;
+}
+
 }  // namespace vfs
 }  // namespace xe