tree cf5f1cb09c4385b7a107d8c8efcc99ea046849f8
parent 6500c6faf82f636d55c9ca5682711022890bef1d
author Dan Sinclair <dsinclair@chromium.org> 1497381674 -0400
committer Chromium commit bot <commit-bot@chromium.org> 1497382385 +0000

Allow zero length streams when parsing.

It's possible to create a stream of length 0 in a PDF document.
Currently the code will early exit and return a nullptr. This causes
issues when you want to print the given PDF as the FPDF_ImportPages code
ends up only generating up to the zero length object.

This CL allows creating streams with length 0 and updates the PDF saving
code to output a blank stream.

Bug: chromium:732380
Change-Id: I44182ba4aaac7c51284b002ba01bbc34b6bcf9e0
Reviewed-on: https://pdfium-review.googlesource.com/6490
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>