rev-parse: add helper for parsing "--foo/--foo="

diff --git a/apply.c b/apply.c
index 705cf562f07098aafcd9f6e27105d2105714751f..0e2caeab9cc523364e0cfbb8cbbb5aba1a0a58ee 100644 (file)
--- a/apply.c
+++ b/apply.c
@@ -2187,29 +2187,20 @@ static int parse_chunk(struct apply_state *state, char *buffer, unsigned long si
        return offset + hdrsize + patchsize;
 }
 
-#define swap(a,b) myswap((a),(b),sizeof(a))
-
-#define myswap(a, b, size) do {                \
-       unsigned char mytmp[size];      \
-       memcpy(mytmp, &a, size);                \
-       memcpy(&a, &b, size);           \
-       memcpy(&b, mytmp, size);                \
-} while (0)
-
 static void reverse_patches(struct patch *p)
 {
        for (; p; p = p->next) {
                struct fragment *frag = p->fragments;
 
-               swap(p->new_name, p->old_name);
-               swap(p->new_mode, p->old_mode);
-               swap(p->is_new, p->is_delete);
-               swap(p->lines_added, p->lines_deleted);
-               swap(p->old_sha1_prefix, p->new_sha1_prefix);
+               SWAP(p->new_name, p->old_name);
+               SWAP(p->new_mode, p->old_mode);
+               SWAP(p->is_new, p->is_delete);
+               SWAP(p->lines_added, p->lines_deleted);
+               SWAP(p->old_sha1_prefix, p->new_sha1_prefix);
 
                for (; frag; frag = frag->next) {
-                       swap(frag->newpos, frag->oldpos);
-                       swap(frag->newlines, frag->oldlines);
+                       SWAP(frag->newpos, frag->oldpos);
+                       SWAP(frag->newlines, frag->oldlines);
                }
        }
 }
@@ -4688,7 +4679,7 @@ static int apply_patch(struct apply_state *state,
                                                                 state->index_file,
                                                                 LOCK_DIE_ON_ERROR);
                else
-                       state->newfd = hold_locked_index(state->lock_file, 1);
+                       state->newfd = hold_locked_index(state->lock_file, LOCK_DIE_ON_ERROR);
        }
 
        if (state->check_index && read_apply_cache(state) < 0) {