WorkbookFactory.Create(Stream inputStream, string password) returns InvalidFormatException

[plpolak]

NPOI Version 2.7.5

File Type

• XLSX
• XLS
• DOCX
• XLSM
• OTHER

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Reproduce Steps

When opening an OOXML using WorkbookFactory.Create(Stream inputStream, string password), the library raises an InvalidFormatException.

This is workign fine in version 2.7.4

Issue Description

The refactoring of the method, is no longer including creating an instance of a PushbackStream before reading the file header. I think this needs to be inserted at line 128 to restore the old behaviour:

        public static IWorkbook Create(Stream inputStream, string password)
        {
            if (inputStream.Length == 0)
                throw new EmptyFileException();

            // INSERT THIS LINE:
            inputStream = new PushbackStream(inputStream);

            FileMagic fm = FileMagicContainer.ValueOf(inputStream);
            switch (fm)
            {