tree d4aaf22ca7c4092867ffc4db6eccf2604b33f4d9
parent 7153ace0c1092100653e5ce42f00f81c5f7855bf
author Shawn Pearce <sop@google.com> 1380140646 -0700
committer Michael Bolin <mbolin@fb.com> 1380152790 -0700

Reset compressed size when combining JAR/ZIP archives.

Summary:
From https://github.com/facebook/buck/pull/16.

zlib does not always deflate a resource to the same compressed size as
the original input.  The input resource may have been compressed using
a different version of libz, or different compression settings.

Before adding each entry to the ZIP, clone the entry and reinitialize
the compressed field to -1 as is done by the more commonly used
`ZipEntry(String)` constructor.

This fixes a rare case where including a JAR in a `java_binary()` may
throw an error such as:

  invalid entry compressed size (expected 4271 but got 4275 bytes)

Test Plan: Sandcastle builds.