import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/filesystem/FileSystemBase.cpp

@@ -0,0 +1,169 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/dom/FileSystemBase.h"
+
+#include "nsCharSeparatedTokenizer.h"
+#include "OSFileSystem.h"
+
+namespace mozilla {
+namespace dom {
+
+FileSystemBase::FileSystemBase()
+  : mShutdown(false)
+#ifdef DEBUG
+  , mOwningThread(PR_GetCurrentThread())
+#endif
+{
+}
+
+FileSystemBase::~FileSystemBase()
+{
+  AssertIsOnOwningThread();
+}
+
+void
+FileSystemBase::Shutdown()
+{
+  AssertIsOnOwningThread();
+  mShutdown = true;
+}
+
+nsISupports*
+FileSystemBase::GetParentObject() const
+{
+  AssertIsOnOwningThread();
+  return nullptr;
+}
+
+bool
+FileSystemBase::GetRealPath(BlobImpl* aFile, nsIFile** aPath) const
+{
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aFile, "aFile Should not be null.");
+  MOZ_ASSERT(aPath);
+
+  nsAutoString filePath;
+  ErrorResult rv;
+  aFile->GetMozFullPathInternal(filePath, rv);
+  if (NS_WARN_IF(rv.Failed())) {
+    rv.SuppressException();
+    return false;
+  }
+
+  rv = NS_NewLocalFile(filePath, true, aPath);
+  if (NS_WARN_IF(rv.Failed())) {
+    rv.SuppressException();
+    return false;
+  }
+
+  return true;
+}
+
+bool
+FileSystemBase::IsSafeFile(nsIFile* aFile) const
+{
+  AssertIsOnOwningThread();
+  return false;
+}
+
+bool
+FileSystemBase::IsSafeDirectory(Directory* aDir) const
+{
+  AssertIsOnOwningThread();
+  return false;
+}
+
+void
+FileSystemBase::GetDirectoryName(nsIFile* aFile, nsAString& aRetval,
+                                 ErrorResult& aRv) const
+{
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aFile);
+
+  aRv = aFile->GetLeafName(aRetval);
+  NS_WARNING_ASSERTION(!aRv.Failed(), "GetLeafName failed");
+}
+
+void
+FileSystemBase::GetDOMPath(nsIFile* aFile,
+                           nsAString& aRetval,
+                           ErrorResult& aRv) const
+{
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aFile);
+
+  aRetval.Truncate();
+
+  nsCOMPtr<nsIFile> fileSystemPath;
+  aRv = NS_NewLocalFile(LocalRootPath(), true, getter_AddRefs(fileSystemPath));
+  if (NS_WARN_IF(aRv.Failed())) {
+    return;
+  }
+
+  nsCOMPtr<nsIFile> path;
+  aRv = aFile->Clone(getter_AddRefs(path));
+  if (NS_WARN_IF(aRv.Failed())) {
+    return;
+  }
+
+  nsTArray<nsString> parts;
+
+  while (true) {
+    nsAutoString leafName;
+    aRv = path->GetLeafName(leafName);
+    if (NS_WARN_IF(aRv.Failed())) {
+      return;
+    }
+
+    if (!leafName.IsEmpty()) {
+      parts.AppendElement(leafName);
+    }
+
+    bool equal = false;
+    aRv = fileSystemPath->Equals(path, &equal);
+    if (NS_WARN_IF(aRv.Failed())) {
+      return;
+    }
+
+    if (equal) {
+      break;
+    }
+
+    nsCOMPtr<nsIFile> parentPath;
+    aRv = path->GetParent(getter_AddRefs(parentPath));
+    if (NS_WARN_IF(aRv.Failed())) {
+      return;
+    }
+
+    MOZ_ASSERT(parentPath);
+
+    aRv = parentPath->Clone(getter_AddRefs(path));
+    if (NS_WARN_IF(aRv.Failed())) {
+      return;
+    }
+  }
+
+  if (parts.IsEmpty()) {
+    aRetval.AppendLiteral(FILESYSTEM_DOM_PATH_SEPARATOR_LITERAL);
+    return;
+  }
+
+  for (int32_t i = parts.Length() - 1; i >= 0; --i) {
+    aRetval.AppendLiteral(FILESYSTEM_DOM_PATH_SEPARATOR_LITERAL);
+    aRetval.Append(parts[i]);
+  }
+}
+
+void
+FileSystemBase::AssertIsOnOwningThread() const
+{
+  MOZ_ASSERT(mOwningThread);
+  MOZ_ASSERT(PR_GetCurrentThread() == mOwningThread);
+}
+
+} // namespace dom
+} // namespace mozilla