From 65416758cd83772f2f3c69f1bd1f501608e64745 Mon Sep 17 00:00:00 2001 From: Junio C Hamano Date: Tue, 28 Feb 2006 16:01:36 -0800 Subject: diffcore-rename: split out the delta counting code. This is to rework diffcore break/rename/copy detection code so that it does not affected when deltifier code gets improved. Signed-off-by: Junio C Hamano --- diffcore-delta.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 diffcore-delta.c (limited to 'diffcore-delta.c') diff --git a/diffcore-delta.c b/diffcore-delta.c new file mode 100644 index 0000000000..1e6a6911ec --- /dev/null +++ b/diffcore-delta.c @@ -0,0 +1,43 @@ +#include "cache.h" +#include "diff.h" +#include "diffcore.h" +#include "delta.h" +#include "count-delta.h" + +static int diffcore_count_changes_1(void *src, unsigned long src_size, + void *dst, unsigned long dst_size, + unsigned long delta_limit, + unsigned long *src_copied, + unsigned long *literal_added) +{ + void *delta; + unsigned long delta_size; + + delta = diff_delta(src, src_size, + dst, dst_size, + &delta_size, delta_limit); + if (!delta) + /* If delta_limit is exceeded, we have too much differences */ + return -1; + + /* Estimate the edit size by interpreting delta. */ + if (count_delta(delta, delta_size, src_copied, literal_added)) { + free(delta); + return -1; + } + free(delta); + return 0; +} + +int diffcore_count_changes(void *src, unsigned long src_size, + void *dst, unsigned long dst_size, + unsigned long delta_limit, + unsigned long *src_copied, + unsigned long *literal_added) +{ + return diffcore_count_changes_1(src, src_size, + dst, dst_size, + delta_limit, + src_copied, + literal_added); +} -- cgit v1.2.3