On 11/03/2015 07:58 AM, atousa.p@xxxxxxxxx wrote:
From: Atousa Pahlevan Duprat <apahlevan@xxxxxxxx>
Minor comments inline
diff --git a/block-sha1/sha1.h b/block-sha1/sha1.h
index b864df6..d085412 100644
--- a/block-sha1/sha1.h
+++ b/block-sha1/sha1.h
@@ -18,5 +18,5 @@ void blk_SHA1_Final(unsigned char hashout[20], blk_SHA_CTX *ctx);
#define git_SHA_CTX blk_SHA_CTX
#define git_SHA1_Init blk_SHA1_Init
-#define git_SHA1_Update blk_SHA1_Update
+#define platform_SHA1_Update blk_SHA1_Update
#define git_SHA1_Final blk_SHA1_Final
diff --git a/cache.h b/cache.h
index 79066e5..a501652 100644
--- a/cache.h
+++ b/cache.h
@@ -10,12 +10,21 @@
#include "trace.h"
#include "string-list.h"
+// platform's underlying implementation of SHA1
Please use /* */ for comments
#include SHA1_HEADER
#ifndef git_SHA_CTX
-#define git_SHA_CTX SHA_CTX
-#define git_SHA1_Init SHA1_Init
-#define git_SHA1_Update SHA1_Update
-#define git_SHA1_Final SHA1_Final
+#define git_SHA_CTX SHA_CTX
+#define git_SHA1_Init SHA1_Init
+#define platform_SHA1_Update SHA1_Update
+#define git_SHA1_Final SHA1_Final
+#endif
+
+// choose whether chunked implementation or not
+#ifdef SHA1_MAX_BLOCK_SIZE
+int git_SHA1_Update_Chunked(SHA_CTX *c, const void *data, size_t len);
+#define git_SHA1_Update git_SHA1_Update_Chunked
+#else
+#define git_SHA1_Update platform_SHA1_Update
#endif
#include <zlib.h>
diff --git a/compat/apple-common-crypto.h b/compat/apple-common-crypto.h
index c8b9b0e..d3fb264 100644
--- a/compat/apple-common-crypto.h
+++ b/compat/apple-common-crypto.h
@@ -16,6 +16,10 @@
#undef TYPE_BOOL
#endif
+#ifndef SHA1_MAX_BLOCK_SIZE
+#error Using Apple Common Crypto library requires setting SHA1_MAX_BLOCK_SIZE
+#endif
+
#ifdef APPLE_LION_OR_NEWER
#define git_CC_error_check(pattern, err) \
do { \
diff --git a/compat/sha1_chunked.c b/compat/sha1_chunked.c
new file mode 100644
index 0000000..61f67de
--- /dev/null
+++ b/compat/sha1_chunked.c
@@ -0,0 +1,19 @@
+#include "cache.h"
+
+int git_SHA1_Update_Chunked(SHA_CTX *c, const void *data, size_t len)
+{
+ size_t nr;
+ size_t total = 0;
+ const char *cdata = (const char*)data;
+
+ while (len > 0) {
size_t is unsigned, isn't it ?
Better to use "while (len) {"
+ nr = len;
+ if (nr > SHA1_MAX_BLOCK_SIZE)
+ nr = SHA1_MAX_BLOCK_SIZE;
+ platform_SHA1_Update(c, cdata, nr);
+ total += nr;
+ cdata += nr;
+ len -= nr;
+ }
+ return total;
+}
--
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