Tesseract calls exit(1) when trying to set an option it doesn't recognise

[vibertk]

Environment

• Tesseract Version: 4
• Commit Number: c0f9699
• Platform: Windows 32 and 64

Current Behavior:

We are using tesseract as a dll. When reading in a traineddata file that has options at the start we found that tesseract crashes.

Doing some investigation we found that the issue occurs in Params.cpp->ReadParamsFromFp. If the option is not found then the code calls exit(1).

This might be fine when running tesseract as a standalone but when using it as a dll this causes an unpreventable crash.

Expected Behavior:

I would expect that unrecognised options should be ignored (outputting a message if appropriate) and tesseract continues on regardless. At the worst, an exception thrown that can be caught so that the main app can deal with the problem gracefully

Suggested Fix:

Ignore the option and continue

[amitdo]

tesseract/src/ccutil/params.cpp

Line 83 in 5d22fdf

exit(1);

[stweil]

Thank you for reporting. This will be fixed with pull request #1920.

[stweil]

@zdenop, please add label "enhancement".