refactor: rename the atom directory to shell

shell/common/asar/scoped_temporary_file.cc

@@ -0,0 +1,74 @@
+// Copyright (c) 2014 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/common/asar/scoped_temporary_file.h"
+
+#include <vector>
+
+#include "base/files/file_util.h"
+#include "base/threading/thread_restrictions.h"
+
+namespace asar {
+
+ScopedTemporaryFile::ScopedTemporaryFile() {}
+
+ScopedTemporaryFile::~ScopedTemporaryFile() {
+  if (!path_.empty()) {
+    base::ThreadRestrictions::ScopedAllowIO allow_io;
+    // On Windows it is very likely the file is already in use (because it is
+    // mostly used for Node native modules), so deleting it now will halt the
+    // program.
+#if defined(OS_WIN)
+    base::DeleteFileAfterReboot(path_);
+#else
+    base::DeleteFile(path_, false);
+#endif
+  }
+}
+
+bool ScopedTemporaryFile::Init(const base::FilePath::StringType& ext) {
+  if (!path_.empty())
+    return true;
+
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
+  if (!base::CreateTemporaryFile(&path_))
+    return false;
+
+#if defined(OS_WIN)
+  // Keep the original extension.
+  if (!ext.empty()) {
+    base::FilePath new_path = path_.AddExtension(ext);
+    if (!base::Move(path_, new_path))
+      return false;
+    path_ = new_path;
+  }
+#endif
+
+  return true;
+}
+
+bool ScopedTemporaryFile::InitFromFile(base::File* src,
+                                       const base::FilePath::StringType& ext,
+                                       uint64_t offset,
+                                       uint64_t size) {
+  if (!src->IsValid())
+    return false;
+
+  if (!Init(ext))
+    return false;
+
+  std::vector<char> buf(size);
+  int len = src->Read(offset, buf.data(), buf.size());
+  if (len != static_cast<int>(size))
+    return false;
+
+  base::File dest(path_, base::File::FLAG_OPEN | base::File::FLAG_WRITE);
+  if (!dest.IsValid())
+    return false;
+
+  return dest.WriteAtCurrentPos(buf.data(), buf.size()) ==
+         static_cast<int>(size);
+}
+
+}  // namespace asar