xref: /aosp_15_r20/external/pigweed/pw_elf/public/pw_elf/internal/stream_utils.h (revision 61c4878ac05f98d0ceed94b57d316916de578985)
1 // Copyright 2024 The Pigweed Authors
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not
4 // use this file except in compliance with the License. You may obtain a copy of
5 // the License at
6 //
7 //     https://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
12 // License for the specific language governing permissions and limitations under
13 // the License.
14 
15 #pragma once
16 
17 #include "pw_status/try.h"
18 #include "pw_stream/stream.h"
19 
20 namespace pw::elf::internal {
21 
22 // TODO(jrreinhart): Move to pw_stream
23 template <class T>
ReadObject(stream::Reader & stream)24 Result<T> ReadObject(stream::Reader& stream) {
25   static_assert(std::is_trivially_copyable_v<T>);
26 
27   std::array<std::byte, sizeof(T)> buffer;
28   PW_TRY(stream.ReadExact(buffer));
29 
30   T object;
31   std::memcpy(&object, buffer.data(), buffer.size());
32   return object;
33 }
34 
35 // TODO(jrreinhart): Move to pw_stream
36 Result<std::string> ReadNullTermString(stream::Reader& stream);
37 
38 }  // namespace pw::elf::internal
39