git-svn: enable delta transfers during fetches when using SVN:: libs

diff --git a/diff-lib.c b/diff-lib.c
index 116b5a9d6834c9517ccc2202510b37a1e1d863a5..fc69fb92a50c3dff67da76fedf1bf1df561c6065 100644 (file)
--- a/diff-lib.c
+++ b/diff-lib.c
@@ -48,7 +48,7 @@ int run_diff_files(struct rev_info *revs, int silent_on_removed)
                        memcpy(dpath->path, ce->name, path_len);
                        dpath->path[path_len] = '\0';
                        dpath->mode = 0;
-                       memset(dpath->sha1, 0, 20);
+                       hashclr(dpath->sha1);
                        memset(&(dpath->parent[0]), 0,
                                        sizeof(struct combine_diff_parent)*5);
 
@@ -66,8 +66,7 @@ int run_diff_files(struct rev_info *revs, int silent_on_removed)
                                if (2 <= stage) {
                                        int mode = ntohl(nce->ce_mode);
                                        num_compare_stages++;
-                                       memcpy(dpath->parent[stage-2].sha1,
-                                              nce->sha1, 20);
+                                       hashcpy(dpath->parent[stage-2].sha1, nce->sha1);
                                        dpath->parent[stage-2].mode =
                                                canon_mode(mode);
                                        dpath->parent[stage-2].status =
@@ -214,8 +213,33 @@ static int show_modified(struct rev_info *revs,
                return -1;
        }
 
+       if (revs->combine_merges && !cached &&
+           (hashcmp(sha1, old->sha1) || hashcmp(old->sha1, new->sha1))) {
+               struct combine_diff_path *p;
+               int pathlen = ce_namelen(new);
+
+               p = xmalloc(combine_diff_path_size(2, pathlen));
+               p->path = (char *) &p->parent[2];
+               p->next = NULL;
+               p->len = pathlen;
+               memcpy(p->path, new->name, pathlen);
+               p->path[pathlen] = 0;
+               p->mode = ntohl(mode);
+               hashclr(p->sha1);
+               memset(p->parent, 0, 2 * sizeof(struct combine_diff_parent));
+               p->parent[0].status = DIFF_STATUS_MODIFIED;
+               p->parent[0].mode = ntohl(new->ce_mode);
+               hashcpy(p->parent[0].sha1, new->sha1);
+               p->parent[1].status = DIFF_STATUS_MODIFIED;
+               p->parent[1].mode = ntohl(old->ce_mode);
+               hashcpy(p->parent[1].sha1, old->sha1);
+               show_combined_diff(p, 2, revs->dense_combined_merges, revs);
+               free(p);
+               return 0;
+       }
+
        oldmode = old->ce_mode;
-       if (mode == oldmode && !memcmp(sha1, old->sha1, 20) &&
+       if (mode == oldmode && !hashcmp(sha1, old->sha1) &&
            !revs->diffopt.find_copies_harder)
                return 0;