Support asynchronous patching operations in the component updater.

chrome/browser/component_updater/component_patcher_operation.cc

 // Copyright 2013 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 "chrome/browser/component_updater/component_patcher_operation.h"
 
 #include <string>
 #include <vector>
 
 #include "base/file_util.h"
@@ skipping 16 matching lines @@
 namespace {
 
 const char kInput[] = "input";
 const char kOp[] = "op";
 const char kOutput[] = "output";
 const char kPatch[] = "patch";
 const char kSha256[] = "sha256";
 
 }  // namespace
 
+namespace component_updater {
+
 DeltaUpdateOp* CreateDeltaUpdateOp(base::DictionaryValue* command) {
   std::string operation;
   if (!command->GetString(kOp, &operation))
     return NULL;
   if (operation == "copy")
     return new DeltaUpdateOpCopy();
   else if (operation == "create")
     return new DeltaUpdateOpCreate();
   else if (operation == "bsdiff")
     return new DeltaUpdateOpPatchBsdiff();
   else if (operation == "courgette")
     return new DeltaUpdateOpPatchCourgette();
   return NULL;
 }
 
 DeltaUpdateOp::DeltaUpdateOp() {}
 
 DeltaUpdateOp::~DeltaUpdateOp() {}
 
-ComponentUnpacker::Error DeltaUpdateOp::Run(base::DictionaryValue* command_args,
-                                            const base::FilePath& input_dir,
-                                            const base::FilePath& unpack_dir,
-                                            ComponentPatcher* patcher,
-                                            ComponentInstaller* installer,
-                                            int* error) {
+ComponentUnpacker::Error DeltaUpdateOp::Run(
+    base::DictionaryValue* command_args,
+    const base::FilePath& input_dir,
+    const base::FilePath& unpack_dir,
+    ComponentPatcher* patcher,
+    ComponentInstaller* installer,
+    int* error) {
   std::string output_rel_path;
   if (!command_args->GetString(kOutput, &output_rel_path) ||
       !command_args->GetString(kSha256, &output_sha256_))
     return ComponentUnpacker::kDeltaBadCommands;
 
   output_abs_path_ = unpack_dir.Append(
       base::FilePath::FromUTF8Unsafe(output_rel_path));
   ComponentUnpacker::Error parse_result = DoParseArguments(
       command_args, input_dir, installer);
   if (parse_result != ComponentUnpacker::kNone)
     return parse_result;
 
   const base::FilePath parent = output_abs_path_.DirName();
   if (!base::DirectoryExists(parent)) {
     if (!file_util::CreateDirectory(parent))
       return ComponentUnpacker::kIoError;
   }
 
-  ComponentUnpacker::Error run_result = DoRun(patcher, error);
+  ComponentUnpacker::Error run_result = DoRun(
+      patcher, error);
   if (run_result != ComponentUnpacker::kNone)
     return run_result;
 
   return CheckHash();
 }
 
 // Uses the hash as a checksum to confirm that the file now residing in the
 // output directory probably has the contents it should.
 ComponentUnpacker::Error DeltaUpdateOp::CheckHash() {
   std::vector<uint8> expected_hash;
@@ skipping 24 matching lines @@
   std::string input_rel_path;
   if (!command_args->GetString(kInput, &input_rel_path))
     return ComponentUnpacker::kDeltaBadCommands;
 
   if (!installer->GetInstalledFile(input_rel_path, &input_abs_path_))
     return ComponentUnpacker::kDeltaMissingExistingFile;
 
   return ComponentUnpacker::kNone;
 }
 
-ComponentUnpacker::Error DeltaUpdateOpCopy::DoRun(ComponentPatcher*,
-                                                  int* error) {
+ComponentUnpacker::Error DeltaUpdateOpCopy::DoRun(
+    ComponentPatcher*,
+    int* error) {
   *error = 0;
   if (!base::CopyFile(input_abs_path_, output_abs_path_))
     return ComponentUnpacker::kDeltaOperationFailure;
 
   return ComponentUnpacker::kNone;
 }
 
 DeltaUpdateOpCreate::DeltaUpdateOpCreate() {}
 
 ComponentUnpacker::Error DeltaUpdateOpCreate::DoParseArguments(
@@ skipping 76 matching lines @@
     ComponentPatcher* patcher,
     int* error) {
   *error = 0;
   return patcher->Patch(ComponentPatcher::kPatchTypeCourgette,
                         input_abs_path_,
                         patch_abs_path_,
                         output_abs_path_,
                         error);
 }
 
+}  // namespace component_updater