Unexpectedly slow when reading file which only contains a single column in the data section

[Soumya3276]

Describe the bug
I was running lasio.read() on few files to get the STAT. value. But there is some files where no data is present in ascii section for respective Measured Depth values. But the lasio.read() not giving any error or exception. It just keeps on running.

To Reproduce
Due to security and privacy reasons I cannot upload that file (even any sample file) from my computer.
I can attach photograph of a sample file.

Expected behavior
I expected if there is some error due to las file not maintaining proper formatting or cases like these, there should be an error to indicate that. So I will be able to handle that error. (e.g. it should give value error or some other error if only one curve is present as in this case.)

Software versions (please complete the following information):

• Python version: 3.12.1 64bit
  

• Python distribution: Miniconda

• lasio version (import lasio; print(lasio.__version__)) 0.31

Additional context
Add any other context about the problem here.

[kinverarity1]

Thanks for the bug report. How many lines are in your LAS file? i.e. we can see 34 lines in your photo - how many are there in total?

[Soumya3276]

It has total 7700+ lines

[dagrha]

@Soumya3276, does lasio hang if you pass the ignore_data=True argument to lasio.read()?

[Soumya3276]

Thanks for the suggestion. I will try that. One thing I have noticed if I manually delete some lines from ASCII section. It will read but it is very slow as compared to other files. Seems like time taken is directly dependent on No. of lines in ASCII section.

[Soumya3276]

@Soumya3276, does lasio hang if you pass the ignore_data=True argument to lasio.read()?

ignore_data is giving out of bound error.

[kinverarity1]

@Soumya3276, does lasio hang if you pass the ignore_data=True argument to lasio.read()?

ignore_data is giving out of bound error.

potentially related to #580