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LibCore+Everywhere: Make Core::Stream::read() return Bytes

Browse source 
A mistake I've repeatedly made is along these lines:
```c++
auto nread = TRY(source_file->read(buffer));
TRY(destination_file->write(buffer));
```

It's a little clunky to have to create a Bytes or StringView from the
buffer's data pointer and the nread, and easy to forget and just use
the buffer. So, this patch changes the read() function to return a
Bytes of the data that were just read.

The other read_foo() methods will be modified in the same way in
subsequent commits.

Fixes #13687
This commit is contained in:
Sam Atkins 2022-04-15 13:33:02 +01:00 • committed by Tim Flynn
parent 6654efcd82
commit 3b1e063d30
22 changed files with 103 additions and 103 deletions
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16
Userland/Services/InspectorServer/InspectableProcess.cpp
View file

@ -43,8 +43,8 @@ String InspectableProcess::wait_for_response()
}
u32 length {};
auto nread = m_socket->read({ (u8*)&length, sizeof(length) }).release_value_but_fixme_should_propagate_errors();
if (nread != sizeof(length)) {
auto length_bytes_read = m_socket->read({ (u8*)&length, sizeof(length) }).release_value_but_fixme_should_propagate_errors();
if (length_bytes_read.size() != sizeof(length)) {
dbgln("InspectableProcess got malformed data: PID {}", m_pid);
m_socket->close();
return {};
@ -54,17 +54,17 @@ String InspectableProcess::wait_for_response()
auto remaining_data_buffer = data_buffer.bytes();
while (!remaining_data_buffer.is_empty()) {
auto maybe_nread = m_socket->read(remaining_data_buffer);
if (maybe_nread.is_error()) {
dbgln("InspectableProcess::wait_for_response: Failed to read data: {}", maybe_nread.error());
auto maybe_bytes_read = m_socket->read(remaining_data_buffer);
if (maybe_bytes_read.is_error()) {
dbgln("InspectableProcess::wait_for_response: Failed to read data: {}", maybe_bytes_read.error());
break;
}
auto nread = maybe_nread.release_value();
if (nread == 0)
auto bytes_read = maybe_bytes_read.release_value();
if (bytes_read.is_empty())
break;
remaining_data_buffer = remaining_data_buffer.slice(nread);
remaining_data_buffer = remaining_data_buffer.slice(bytes_read.size());
}
VERIFY(data_buffer.size() == length);