JayOfemi opened a new issue, #936:
URL: https://github.com/apache/lucenenet/issues/936
### Is there an existing issue for this?
- [X] I have searched the existing issues
### Describe the bug
I am simply trying to create a StandardQueryParser. I get the below
exception only on Android and iOS. This makes sense as `System.Console.In` is
not supported on these platforms, but I have no need for it in the context of
our application. So, I think a way to ignore this would be very useful to
prevent our app from crashing on these platforms.
It seems the issue is the way these properties are setup in
`Lucene.Net.Util.SystemConsole`.
```
public static TextWriter Out { get; set; } = Console.Out;
public static TextWriter Error { get; set; } = Console.Error;
public static TextReader In { get; set; } = Console.In;
```
My application would work fine to simply return null here when Console.In is
not supported.
I can't seem to find anything online about this regarding Lucene, so I think
it is just specific to Lucene.NET and .NET MAUI. In any case, I believe it can
possible be addressed simply by doing the above.
From what I can tell, `SystemConsole` is only used in
`StandardSyntaxParserTokenManager` to create the private `debugStream`
property, which is then never used in this class. I believe this whole thing is
the same when using the default QueryParser as well.
### Expected Behavior
Perhaps instead of defaulting to `Console.In`, the property can be set in a
way that if a non-supported or any other exceptions that can be ignored is
caught, this property returns null or a bogus TextWriter by default.
### Steps To Reproduce
* In a .NET MAUI sample app, create a
`Lucene.Net.QueryParsers.Flexible.Standard.StandardQueryParser` using the
constructor.
* Specifically we created our MAUI app using the default template in
Rider.
* Run the app.
on Windows and macOS, this will run fine. On Android and iOS, the app will
crash with a `System.PlatformNotSupportedException` when it attempts to
construct the `StandardQueryParser`.
### Exceptions (if any)
```
Exception: System.TypeInitializationException: The type initializer for
'Lucene.Net.Util.SystemConsole' threw an exception.
---> System.PlatformNotSupportedException: Operation is not supported on
this platform.
at System.ConsolePal.GetOrCreateReader()
at System.Console.<get_In>g__EnsureInitialized|14_0()
at System.Console.get_In()
2024-04-29 15:55:32.051142-0700 at Lucene.Net.Util.SystemConsole..cctor()
--- End of inner exception stack trace ---
at
Lucene.Net.QueryParsers.Flexible.Standard.Parser.StandardSyntaxParserTokenManager..ctor(ICharStream
stream)
2024-04-29 15:55:32.051200-0700 at
Lucene.Net.QueryParsers.Flexible.Standard.Parser.StandardSyntaxParser..ctor(ICharStream
stream)
at
Lucene.Net.QueryParsers.Flexible.Standard.Parser.StandardSyntaxParser..ctor()
at Lucene.Net.QueryParsers.Flexible.Standard.StandardQueryParser..ctor()
2024-04-29 15:55:32.051439-0700 at
Lucene.Net.QueryParsers.Flexible.Standard.StandardQueryParser..ctor(Analyzer
analyzer)
```
### Lucene.NET Version
4.8
### .NET Version
8.0.203
### Operating System
Windows 11
### Anything else?
_No response_
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