Class ConsoleLineClassifier

Namespace

McServerLauncher.Services

Assembly

McServerLauncher.dll

What a console line is about: its severity, and whether it is chat, a player event, or the app.

public static class ConsoleLineClassifier

Inheritance

object

ConsoleLineClassifier

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Remarks

The order matters, and it runs from what is certain to what is inferred. The source is certain — the app knows when it is the one talking, and the operating system knows what came out of standard error. Only the server's standard output has to be read, and only then is a mistake possible.

This is why the app's own messages are tagged where they are raised instead of being recognised here: their text is localized, prefixes and all — [Launcher], [Error] and [Players] live inside the resx values and are translated with them. A classifier keyed on those markers would work in Spanish and quietly stop working in German.

Methods

Classify(string, ConsoleSource, ConsoleLineKind?, IReadOnlySet<string>?)

What a line is about, given where it came from and what came before it.

public static ConsoleLineKind Classify(string text, ConsoleSource source, ConsoleLineKind? previous = null, IReadOnlySet<string>? online = null)

Parameters

text string

The line, as the server wrote it.

source ConsoleSource

Which stream it arrived on.

previous ConsoleLineKind?

What the last line on standard output was. A line with no log prefix of its own is the next line of that entry — a list, a multi-line warning, an exception message — and it belongs to the same entry rather than being judged on its own.

online IReadOnlySet<string>

Who is connected right now, when the caller knows. Only needed to tell a player's /say ([Alice] …) from a plugin logging under its own name ([LuckPerms] …); without it those stay ordinary output. See ChatOf(string, IReadOnlySet<string>).

Returns

ConsoleLineKind

NameBefore(string, string)

Extracts the player name right before a marker, from a real log entry only.

public static string? NameBefore(string line, string marker)

Parameters

line string

marker string

Returns

string

Remarks

The name must be the only text between the log prefix and the marker, and a valid Minecraft name. That is what stops <Bob> Alice joined the game — Bob typing the sentence in chat — from counting as Alice joining.

"Between the log prefix and the marker" is measured from the first ]: , which is where the server's own prefix ends. It used to be the last ": " before the marker, which a player controls: <Bob> x: Bob left the game took Bob off the player list, and with nobody left on it the idle timer stopped a server people were playing on.

Lives here rather than in the view model that used to own it, because two things now need it and both were carrying their own copy of the same regex: the player list, and this. Fixing a misread name in one of them and not the other is exactly the kind of drift that is invisible until somebody's name stops working.