Implement SHA-256 abstraction

The Large File Storage extension specified by GitHub [1] uses SHA-256 to
compute the ID of large files stored by the extension. Hence implement a
SHA-256 abstraction similar to the SHA-1 abstraction used by JGit.

[1] https://git-lfs.github.com/

Bug: 470333
Change-Id: I3a95954543c8570d73929e55f4a884b55dbf1b7a
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/BUCK b/BUCK
index f19b7bdc5d..1deab2fe3e 100644
--- a/BUCK
+++ b/BUCK
@@ -30,6 +30,22 @@ java_library(
 )
 
 java_library(
+  name = 'jgit-lfs',
+  exported_deps = [
+    ':jgit',
+    '//org.eclipse.jgit.lfs:jgit-lfs'
+  ],
+  visibility = ['PUBLIC'],
+)
+
+genrule(
+  name = 'jgit-lfs_src',
+  cmd = 'ln -s $(location //org.eclipse.jgit.lfs:jgit-lfs_src) $OUT',
+  out = 'jgit-lfs_src.zip',
+  visibility = ['PUBLIC'],
+)
+
+java_library(
   name = 'junit',
   exported_deps = [
     ':jgit',