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When compiled as an exe TesseractEngine won't initialize #609

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AlexBaldwin42 opened this issue Apr 26, 2022 · 4 comments · May be fixed by #657
Closed

When compiled as an exe TesseractEngine won't initialize #609

AlexBaldwin42 opened this issue Apr 26, 2022 · 4 comments · May be fixed by #657

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@AlexBaldwin42
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AlexBaldwin42 commented Apr 26, 2022 •
edited

This is a .NET 6 console app. With Tesseract and Tesseract.Drawing Version 4.1.1
It will work when debugging and dotnet run
It will not work with -p:PublishSingleFile=true set but will run without it.
It will not work when I publish it as an exe using this.
dotnet publish --output "C:\" --runtime win-x64 --configuration Release -p:PublishSingleFile=true -p:PublishTrimmed=true --self-contained true
It fails on
var engine = new TesseractEngine(@"./tessdata", "eng", EngineMode.Default))
The training data is in that folder it is the same folder the executable is being run.
I have tried using Directory.GetCurrentDirectory() as the path.
I have tried having the training data in the same folder as the executable with @"." path.
All these methods work when debugging but not when published as a single file executable.

 ---> System.ArgumentNullException: Value cannot be null. (Parameter 'path1')
   at System.IO.Path.Combine(String , String )  
   at InteropDotNet.LibraryLoader.InternalLoadLibrary(String baseDirectory, String platformName, String fileName)   
   at InteropDotNet.LibraryLoader.CheckExecutingAssemblyDomain(String fileName, String platformName)  
   at InteropDotNet.LibraryLoader.LoadLibrary(String fileName, String platformName)  
   at InteropRuntimeImplementer.LeptonicaApiSignaturesInstance.LeptonicaApiSignaturesImplementation..ctor(LibraryLoader loader)  
   --- End of inner exception stack trace ---  
   at System.RuntimeMethodHandle.InvokeMethod(Object , Span1& , Signature , Boolean , Boolean )  
   at System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags , Binder , Object[] , CultureInfo )  
   at System.RuntimeType.CreateInstanceImpl(BindingFlags , Binder , Object[] , CultureInfo )  
   at System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)  
   at System.Activator.CreateInstance(Type type, Object[] args)  
   at InteropDotNet.InteropRuntimeImplementer.CreateInstance[T]()  
   at Tesseract.Interop.LeptonicaApi.Initialize()  
   at Tesseract.Interop.TessApi.Initialize()  
   at Tesseract.Interop.TessApi.get_Native()  
   at Tesseract.TesseractEngine..ctor(String datapath, String language, EngineMode engineMode, IEnumerable 1 configFiles, IDictionary2 initialOptions, Boolean setOnlyNonDebugVariables)  
   at Program.<Main>$(String[] args) in C:\Users\alex\source\repos\PdfSplitter\Program.cs:line 26
[process exited with code 3762504530 (0xe0434352)]```
@benquan
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benquan commented Jul 22, 2022 •
edited

I am having the same problem using .NET 6 and Windows Forms. Debugging works just fine but when publishing, it wont run. Did you manage to make it work?

This is my Error

Running
Running
Unexpected Error: Exception has been thrown by the target of an invocation.
Details:
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
 ---> System.ArgumentNullException: Value cannot be null. (Parameter 'path1')
   at System.IO.Path.Combine(String path1, String path2)
   at InteropDotNet.LibraryLoader.InternalLoadLibrary(String baseDirectory, String platformName, String fileName)
   at InteropDotNet.LibraryLoader.CheckExecutingAssemblyDomain(String fileName, String platformName)
   at InteropDotNet.LibraryLoader.LoadLibrary(String fileName, String platformName)
   at InteropRuntimeImplementer.LeptonicaApiSignaturesInstance.LeptonicaApiSignaturesImplementation..ctor(LibraryLoader loader)
   --- End of inner exception stack trace ---
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Span`1& arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)
   at System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture)
   at System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
   at System.Activator.CreateInstance(Type type, Object[] args)
   at InteropDotNet.InteropRuntimeImplementer.CreateInstance[T]()
   at Tesseract.Interop.LeptonicaApi.Initialize()
   at Tesseract.Interop.TessApi.Initialize()
   at Tesseract.Interop.TessApi.get_Native()
   at Tesseract.TesseractEngine..ctor(String datapath, String language, EngineMode engineMode, IEnumerable`1 configFiles, IDictionary`2 initialOptions, Boolean setOnlyNonDebugVariables)
   at Tesseract.TesseractEngine..ctor(String datapath, String language, EngineMode engineMode)
   at TesseractTest.Form1.button1_Click(Object sender, EventArgs e)

@AlexBaldwin42
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I got it to run by using
var engine = new TesseractEngine(@"//", "eng", EngineMode.Default))
while having the "tessdata" folder in the published directory.

@benquan
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benquan commented Aug 19, 2022

Didn't work for me

@gyfprivate
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https://github.com/gyfprivate/tesseract
I fix myself..

@gyfprivate gyfprivate mentioned this issue Dec 11, 2023
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Fix #609 Assembly.GetExecutingAssembly().Location is null gyfprivate/tesseract
3 participants
@AlexBaldwin42 @benquan @gyfprivate