RFR: 1236: Add jcheck option to check for large binary files [v3]

[Guoxiong Li]

On Mon, 6 Dec 2021 15:33:31 GMT, Erik Joelsson <erikj at openjdk.org> wrote:

> I think size delta in the case of modified is fine. In my experience, it's very rare for binary patches to actually be partial in real situations. When replacing an image or archive, the whole file usually changes enough. If the binary patch is empty, due to file moved/rename, then we can't really do anything about that unfortunately. Have you looked at actual patch output from Git to see what it looks like for renamed binary files? Git doesn't track file renames explicitly, so I'm not sure what would actually happen here.

Moved file is identifed as `renamed`. The `renamed` diff information is shown below.


:100644 100644 c9eef64 c9eef64 R100     t/1.png t/2.png

diff --git a/t/1.png b/t/2.png
similarity index 100%
rename from t/1.png
rename to t/2.png


It only has the source file and target file and have no information about size.

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PR: https://git.openjdk.java.net/skara/pull/1247