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using System;
using System.Collections.Generic;
using System.Text;
namespace NW4RTools {
public class LogContext : IDisposable {
// An awful, awful hack
private readonly ILogger Owner;
public LogContext(ILogger owner) {
Owner = owner;
}
void IDisposable.Dispose() {
Owner.Pop();
}
}
public interface ILogger {
void Send(string format, params object[] args);
LogContext Push(string format, params object[] args);
void Pop();
void Block();
void Unblock();
}
public class ConsoleLogger : ILogger {
private List<string> PrefixElements;
private List<string> Names;
private int BlockCount;
private string Prefix;
public ConsoleLogger() {
Names = new List<string>();
Names.Add("root");
PrefixElements = new List<string>();
PrefixElements.Add("|");
RebuildPrefix();
}
private void RebuildPrefix() {
Prefix = string.Join(" ", PrefixElements.ToArray()) + "- ";
}
public void Send(string format, params object[] args) {
if (BlockCount > 0)
return;
Console.Write(Prefix);
Console.WriteLine(format, args);
}
public LogContext Push(string format, params object[] args) {
string n = string.Format(format, args);
Console.Write(Prefix);
Console.Write("=== ");
Console.WriteLine(n);
Names.Add(n);
PrefixElements.Add("-");
RebuildPrefix();
return new LogContext(this);
}
public void Pop() {
PrefixElements.RemoveAt(PrefixElements.Count - 1);
RebuildPrefix();
string n = Names[Names.Count - 1];
Names.RemoveAt(Names.Count - 1);
Console.Write(Prefix);
Console.Write("=/= end ");
Console.WriteLine(n);
}
public void Block() {
BlockCount += 1;
}
public void Unblock() {
BlockCount -= 1;
}
}
}
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