Some table headlines in XLS files are not recognized any more

[numeredev]

DESCRIPTION

Describe the bug In some XLS files, the headlines are distributed among multiple rows. Those rows are not detected correctly any more.

To Reproduce Steps to reproduce the behavior:

1. Load the attached file kante.xls
2. OPen the table
3. See misinterpreted headline

Expected behavior Headlines in such files should be loaded correctly again.

Screenshots If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: 10x64
• Version v1.1.5.2303

Additional context Add any other context about the problem here.

(Do not write below this line)

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DEVS' SECTION

ANALYSIS

In io/file.cpp in the member function void XLSSpreadSheet::readFile() is the number of headlines determined by whether the rows filled with strings is larger than zero. Change that, so that the number of headlines is determined by the string-only rows, if this number is smaller than 4 rows or 10% of the whole number of rows (whichever is larger).

IMPLEMENTATION STEPS

(see also our Wiki for implementation guidelines)

• Implement the necessary changes in a new branch created here on GitHub
• Test your implementation

DOCUMENTATION STEPS

(see also our Wiki for further information)

• Update the changes log
• Add comments to your implementation
• Add Doxygen documentation comments
• Create or update the documentation articles (*.NHLP and *.NDB files, if needed)
• Update the language strings (*.NLNG files, if needed)

PULL REQUEST

• Create a pull request for your changes
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• Assign @numere-org/maintainers as reviewers