feat: Add basic support for reading/writing files >2gb

ststeiger / PdfSharpCore

Port of the PdfSharp library to .NET Core - largely removed GDI+ (only missing GetFontData - which can be replaced with freetype2)

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Closed jafin closed 2 years ago

jafin commented 2 years ago

Add basic support to read/write files >2gb (int32.max) by supporting long numeric types.

Fixes issue where writing a file would incorrectly set the startxref value to an overflow int result. Possibly fixes #193

Support for files that store the startxref somewhere in the middle was not implemented. The code mentions this is common in SAP output files.

Added a test to read/write a PDF but marked as skipped due to time and resources it needs to run.

ststeiger commented 2 years ago

Merged.