1 files changed, 0 insertions, 94 deletions
diff --git a/third_party/git/patch-delta.c b/third_party/git/patch-delta.c
deleted file mode 100644
index b5c8594db60d..000000000000
--- a/third_party/git/patch-delta.c
+++ /dev/null
@@ -1,94 +0,0 @@
-/*
- * patch-delta.c:
- * recreate a buffer from a source and the delta produced by diff-delta.c
- *
- * (C) 2005 Nicolas Pitre <nico@fluxnic.net>
- *
- * This code is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include "git-compat-util.h"
-#include "delta.h"
-
-void *patch_delta(const void *src_buf, unsigned long src_size,
-		  const void *delta_buf, unsigned long delta_size,
-		  unsigned long *dst_size)
-{
-	const unsigned char *data, *top;
-	unsigned char *dst_buf, *out, cmd;
-	unsigned long size;
-
-	if (delta_size < DELTA_SIZE_MIN)
-		return NULL;
-
-	data = delta_buf;
-	top = (const unsigned char *) delta_buf + delta_size;
-
-	/* make sure the orig file size matches what we expect */
-	size = get_delta_hdr_size(&data, top);
-	if (size != src_size)
-		return NULL;
-
-	/* now the result size */
-	size = get_delta_hdr_size(&data, top);
-	dst_buf = xmallocz(size);
-
-	out = dst_buf;
-	while (data < top) {
-		cmd = *data++;
-		if (cmd & 0x80) {
-			unsigned long cp_off = 0, cp_size = 0;
-#define PARSE_CP_PARAM(bit, var, shift) do { \
-			if (cmd & (bit)) { \
-				if (data >= top) \
-					goto bad_length; \
-				var |= ((unsigned) *data++ << (shift)); \
-			} } while (0)
-			PARSE_CP_PARAM(0x01, cp_off, 0);
-			PARSE_CP_PARAM(0x02, cp_off, 8);
-			PARSE_CP_PARAM(0x04, cp_off, 16);
-			PARSE_CP_PARAM(0x08, cp_off, 24);
-			PARSE_CP_PARAM(0x10, cp_size, 0);
-			PARSE_CP_PARAM(0x20, cp_size, 8);
-			PARSE_CP_PARAM(0x40, cp_size, 16);
-#undef PARSE_CP_PARAM
-			if (cp_size == 0) cp_size = 0x10000;
-			if (unsigned_add_overflows(cp_off, cp_size) ||
-			    cp_off + cp_size > src_size ||
-			    cp_size > size)
-				goto bad_length;
-			memcpy(out, (char *) src_buf + cp_off, cp_size);
-			out += cp_size;
-			size -= cp_size;
-		} else if (cmd) {
-			if (cmd > size || cmd > top - data)
-				goto bad_length;
-			memcpy(out, data, cmd);
-			out += cmd;
-			data += cmd;
-			size -= cmd;
-		} else {
-			/*
-			 * cmd == 0 is reserved for future encoding
-			 * extensions. In the mean time we must fail when
-			 * encountering them (might be data corruption).
-			 */
-			error("unexpected delta opcode 0");
-			goto bad;
-		}
-	}
-
-	/* sanity check */
-	if (data != top || size != 0) {
-		bad_length:
-		error("delta replay has gone wild");
-		bad:
-		free(dst_buf);
-		return NULL;
-	}
-
-	*dst_size = out - dst_buf;
-	return dst_buf;
-}