The `IClient::Disconnect` function is always called at the beginning of the `IClient::Connect` function. The `IClient::Disconnect` function calls `IClient::DisconnectWithReason`, if the client is not already offline, which performs cleanup of temporary commands and demo recorders already, so the same cleanup in the `Connect` function is unnecessary. An assertion is added to ensure that the client was properly disconnected before connecting. Connecting while the client is already quitting or restarting is now prevented, as the client state cannot be changed once set to quitting or restarting.
By adding `CDataFileWriter::ECompressionLevel` to replace usage of zlib internal compression levels in the `CDataFileWriter` API.
Use `std::numeric_limits<int>::max()` instead of `INT_MAX` in one case where the latter was only declared by the transitive zlib include. The `limits` header is already included and its use is more fitting for C++ code.
The server community was only initialized when receiving server info. This caused servers for which no server info is received to be hidden when using the community filter. Now the community filter also works correctly for servers for which no ordinary server info is received, by initializing the community already when adding server entries to the list.
Closes#7776.
Adapt the `CDataFileReader::GetItem` function so it optionally also returns a `CUuid` for UUID-based map items, including for items with unknown UUIDs where the item type will be `-1`. Adapt the `CDataFileWriter::AddItem` function so it optionally also accepts a `CUuid` which will be used if the item type is `-1`.
The additional checks for invalid map item types in the map tools are removed again and instead the new UUID parameters are used so map items with unknown UUIDs are written back to maps correctly.
Closes#7701.
Files were not being truncated on Windows anymore when using `io_open` with `IOFLAG_WRITE` due to a regression from #7254. Instead, the existing file contents were kept and the file pointer was set to the beginning of the file.
This caused broken demo files to be created (#7349) when recording a shorter demo with the same filename as an existing longer demo. It also caused the map tools to produce maps with additional junk data at the end, if an existing map is overridden by a smaller map.
This is fixed by using the creation disposition `CREATE_ALWAYS` instead of `OPEN_EXISTING` with [`CreateFileW`](https://learn.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-createfilew), which ensures that a file is always created and truncated.
A regression test case is added, which fails without this change.
ChillerDragon
