[NaCl SDK] Refactor FakeFileRefInterface.

native_client_sdk/src/tests/nacl_io_test/fake_ppapi/fake_file_ref_interface.cc

Index: native_client_sdk/src/tests/nacl_io_test/fake_ppapi/fake_file_ref_interface.cc
diff --git a/native_client_sdk/src/tests/nacl_io_test/fake_ppapi/fake_file_ref_interface.cc b/native_client_sdk/src/tests/nacl_io_test/fake_ppapi/fake_file_ref_interface.cc
new file mode 100644
index 0000000000000000000000000000000000000000..4fdfd29d275bb9ebc2b1e4172667e07facf6b736
--- /dev/null
+++ b/native_client_sdk/src/tests/nacl_io_test/fake_ppapi/fake_file_ref_interface.cc
@@ -0,0 +1,217 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "fake_ppapi/fake_file_ref_interface.h"
+
+#include <vector>
+
+#include <ppapi/c/pp_completion_callback.h>
+#include <ppapi/c/pp_directory_entry.h>
+#include <ppapi/c/pp_errors.h>
+
+#include "gtest/gtest.h"
+
+#include "fake_ppapi/fake_core_interface.h"
+#include "fake_ppapi/fake_pepper_interface_html5_fs.h"
+#include "fake_ppapi/fake_util.h"
+#include "fake_ppapi/fake_var_interface.h"
+
+FakeFileRefInterface::FakeFileRefInterface(FakeCoreInterface* core_interface,
+                                           FakeVarInterface* var_interface)
+    : core_interface_(core_interface), var_interface_(var_interface) {}
+
+PP_Resource FakeFileRefInterface::Create(PP_Resource file_system,
+                                         const char* path) {
+  FakeFileSystemResource* file_system_resource =
+      core_interface_->resource_manager()->Get<FakeFileSystemResource>(
+          file_system);
+  if (file_system_resource == NULL)
+    return PP_ERROR_BADRESOURCE;
+
+  if (!file_system_resource->opened)
+    return PP_ERROR_FAILED;
+
+  if (path == NULL)
+    return PP_ERROR_FAILED;
+
+  size_t path_len = strlen(path);
+  if (path_len == 0)
+    return PP_ERROR_FAILED;
+
+  FakeFileRefResource* file_ref_resource = new FakeFileRefResource;
+  file_ref_resource->filesystem = file_system_resource->filesystem;
+  file_ref_resource->path = path;
+
+  // Remove a trailing slash from the path, unless it is the root path.
+  if (path_len > 1 && file_ref_resource->path[path_len - 1] == '/')
+    file_ref_resource->path.erase(path_len - 1);
+
+  return CREATE_RESOURCE(core_interface_->resource_manager(),
+                         FakeFileRefResource, file_ref_resource);
+}
+
+PP_Var FakeFileRefInterface::GetName(PP_Resource file_ref) {
+  FakeFileRefResource* file_ref_resource =
+      core_interface_->resource_manager()->Get<FakeFileRefResource>(file_ref);
+  if (file_ref_resource == NULL)
+    return PP_MakeUndefined();
+
+  return var_interface_->VarFromUtf8(file_ref_resource->path.c_str(),
+                                     file_ref_resource->path.size());
+}
+
+int32_t FakeFileRefInterface::MakeDirectory(PP_Resource directory_ref,
+                                            PP_Bool make_parents,
+                                            PP_CompletionCallback callback) {
+  FakeFileRefResource* directory_ref_resource =
+      core_interface_->resource_manager()->Get<FakeFileRefResource>(
+          directory_ref);
+  if (directory_ref_resource == NULL)
+    return PP_ERROR_BADRESOURCE;
+
+  // TODO(binji): We don't currently use make_parents in nacl_io, so
+  // I won't bother handling it yet.
+  if (make_parents == PP_TRUE)
+    return PP_ERROR_FAILED;
+
+  FakeHtml5FsFilesystem* filesystem = directory_ref_resource->filesystem;
+  FakeHtml5FsFilesystem::Path path = directory_ref_resource->path;
+
+  // Pepper returns PP_ERROR_NOACCESS when trying to create the root directory,
+  // not PP_ERROR_FILEEXISTS, as you might expect.
+  if (path == "/")
+    return RunCompletionCallback(&callback, PP_ERROR_NOACCESS);
+
+  FakeHtml5FsNode* node = filesystem->GetNode(path);
+  if (node != NULL)
+    return RunCompletionCallback(&callback, PP_ERROR_FILEEXISTS);
+
+  FakeHtml5FsFilesystem::Path parent_path = filesystem->GetParentPath(path);
+  FakeHtml5FsNode* parent_node = filesystem->GetNode(parent_path);
+  if (parent_node == NULL)
+    return RunCompletionCallback(&callback, PP_ERROR_FILENOTFOUND);
+
+  if (!parent_node->IsDirectory())
+    return RunCompletionCallback(&callback, PP_ERROR_FAILED);
+
+  bool result = filesystem->AddDirectory(directory_ref_resource->path, NULL);
+  EXPECT_EQ(true, result);
+  return RunCompletionCallback(&callback, PP_OK);
+}
+
+int32_t FakeFileRefInterface::Delete(PP_Resource file_ref,
+                                     PP_CompletionCallback callback) {
+  FakeFileRefResource* file_ref_resource =
+      core_interface_->resource_manager()->Get<FakeFileRefResource>(file_ref);
+  if (file_ref_resource == NULL)
+    return PP_ERROR_BADRESOURCE;
+
+  FakeHtml5FsFilesystem* filesystem = file_ref_resource->filesystem;
+  FakeHtml5FsFilesystem::Path path = file_ref_resource->path;
+  FakeHtml5FsNode* node = filesystem->GetNode(path);
+  if (node == NULL)
+    return RunCompletionCallback(&callback, PP_ERROR_FILENOTFOUND);
+
+  filesystem->RemoveNode(path);
+  return RunCompletionCallback(&callback, PP_OK);
+}
+
+int32_t FakeFileRefInterface::Query(PP_Resource file_ref,
+                                    PP_FileInfo* info,
+                                    PP_CompletionCallback callback) {
+  FakeFileRefResource* file_ref_resource =
+      core_interface_->resource_manager()->Get<FakeFileRefResource>(file_ref);
+  if (file_ref_resource == NULL)
+    return PP_ERROR_BADRESOURCE;
+
+  FakeHtml5FsFilesystem* filesystem = file_ref_resource->filesystem;
+  FakeHtml5FsFilesystem::Path path = file_ref_resource->path;
+  FakeHtml5FsNode* node = filesystem->GetNode(path);
+  if (node == NULL)
+    return RunCompletionCallback(&callback, PP_ERROR_FILENOTFOUND);
+
+  node->GetInfo(info);
+  return RunCompletionCallback(&callback, PP_OK);
+}
+
+int32_t FakeFileRefInterface::ReadDirectoryEntries(
+    PP_Resource directory_ref,
+    const PP_ArrayOutput& output,
+    PP_CompletionCallback callback) {
+  FakeFileRefResource* directory_ref_resource =
+      core_interface_->resource_manager()->Get<FakeFileRefResource>(
+          directory_ref);
+  if (directory_ref_resource == NULL)
+    return PP_ERROR_BADRESOURCE;
+
+  FakeHtml5FsFilesystem* filesystem = directory_ref_resource->filesystem;
+  FakeHtml5FsFilesystem::Path path = directory_ref_resource->path;
+  FakeHtml5FsNode* node = filesystem->GetNode(path);
+  if (node == NULL)
+    return RunCompletionCallback(&callback, PP_ERROR_FILENOTFOUND);
+
+  if (!node->IsDirectory())
+    return RunCompletionCallback(&callback, PP_ERROR_FAILED);
+
+  FakeHtml5FsFilesystem::DirectoryEntries fake_dir_entries;
+  filesystem->GetDirectoryEntries(path, &fake_dir_entries);
+
+  uint32_t element_count = fake_dir_entries.size();
+  uint32_t element_size = sizeof(fake_dir_entries[0]);
+  void* data_buffer =
+      (*output.GetDataBuffer)(output.user_data, element_count, element_size);
+
+  if (data_buffer == NULL)
+    return RunCompletionCallback(&callback, PP_ERROR_FAILED);
+
+  PP_DirectoryEntry* dir_entries = static_cast<PP_DirectoryEntry*>(data_buffer);
+  for (uint32_t i = 0; i < element_count; ++i) {
+    const FakeHtml5FsFilesystem::DirectoryEntry& fake_dir_entry =
+        fake_dir_entries[i];
+
+    FakeFileRefResource* file_ref_resource = new FakeFileRefResource;
+    file_ref_resource->filesystem = directory_ref_resource->filesystem;
+    file_ref_resource->path = fake_dir_entry.path;
+    PP_Resource file_ref =
+        CREATE_RESOURCE(core_interface_->resource_manager(),
+                        FakeFileRefResource, file_ref_resource);
+
+    dir_entries[i].file_ref = file_ref;
+    dir_entries[i].file_type = fake_dir_entry.node->file_type();
+  }
+
+  return RunCompletionCallback(&callback, PP_OK);
+}
+
+int32_t FakeFileRefInterface::Rename(PP_Resource file_ref,
+                                     PP_Resource new_file_ref,
+                                     PP_CompletionCallback callback) {
+  FakeFileRefResource* file_ref_resource =
+      core_interface_->resource_manager()->Get<FakeFileRefResource>(file_ref);
+  if (file_ref_resource == NULL)
+    return PP_ERROR_BADRESOURCE;
+
+  FakeFileRefResource* new_file_ref_resource =
+      core_interface_->resource_manager()->Get<FakeFileRefResource>(
+          new_file_ref);
+  if (new_file_ref_resource == NULL)
+    return PP_ERROR_BADRESOURCE;
+
+  FakeHtml5FsFilesystem* filesystem = file_ref_resource->filesystem;
+  FakeHtml5FsFilesystem::Path path = file_ref_resource->path;
+  FakeHtml5FsFilesystem::Path newpath = new_file_ref_resource->path;
+  FakeHtml5FsNode* node = filesystem->GetNode(path);
+  if (node == NULL)
+    return RunCompletionCallback(&callback, PP_ERROR_FILENOTFOUND);
+  // FakeFileRefResource does not support directory rename.
+  if (!node->IsRegular())
+    return RunCompletionCallback(&callback, PP_ERROR_NOTAFILE);
+
+  // Remove the destination if it exists.
+  filesystem->RemoveNode(newpath);
+  const std::vector<uint8_t> contents = node->contents();
+  EXPECT_TRUE(filesystem->AddFile(newpath, contents, NULL));
+  EXPECT_TRUE(filesystem->RemoveNode(path));
+  return RunCompletionCallback(&callback, PP_OK);
+}