tree b11711e88a94883ada8baf3d75a79fac2166d5e0
parent 405f544608c1c9f2ede20160c4364a556cc4a386
author Daniel Hosseinian <dhoss@chromium.org> 1586826327 +0000
committer Chromium commit bot <commit-bot@chromium.org> 1586826327 +0000

Add a helper to copy a ByteString to a buffer

We have a few repetitive patterns similar to:
  if (buffer && len <= buflen)
    memcpy(buffer, byteString.c_str(), len);
  return len;

Replace them with a new helper, NulTerminateMaybeCopyAndReturnLength().
Add tests for the new helper.

Bug: pdfium:1514
Change-Id: I0d35cc775f6963833524c2eab1847aafa8e29a10
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/68695
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Daniel Hosseinian <dhoss@chromium.org>