combine-diff: show mode changes as well.

Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/combine-diff.c b/combine-diff.c
index 50db39b..506c095 100644 (file)
--- a/combine-diff.c
+++ b/combine-diff.c
@@ -28,15 +28,19 @@ static struct combine_diff_path *intersect_paths(struct combine_diff_path *curr,
                                continue;
                        path = q->queue[i]->two->path;
                        len = strlen(path);
-
-                       p = xmalloc(sizeof(*p) + len + 1 + num_parent * 20);
-                       p->path = (char*) &(p->parent_sha1[num_parent][0]);
+                       p = xmalloc(combine_diff_path_size(num_parent, len));
+                       p->path = (char*) &(p->parent[num_parent]);
                        memcpy(p->path, path, len);
                        p->path[len] = 0;
                        p->len = len;
                        p->next = NULL;
+                       memset(p->parent, 0,
+                              sizeof(p->parent[0]) * num_parent);
+
                        memcpy(p->sha1, q->queue[i]->two->sha1, 20);
-                       memcpy(p->parent_sha1[n], q->queue[i]->one->sha1, 20);
+                       p->mode = q->queue[i]->two->mode;
+                       memcpy(p->parent[n].sha1, q->queue[i]->one->sha1, 20);
+                       p->parent[n].mode = q->queue[i]->one->mode;
                        *tail = p;
                        tail = &p->next;
                }
@@ -57,8 +61,9 @@ static struct combine_diff_path *intersect_paths(struct combine_diff_path *curr,
                        len = strlen(path);
                        if (len == p->len && !memcmp(path, p->path, len)) {
                                found = 1;
-                               memcpy(p->parent_sha1[n],
+                               memcpy(p->parent[n].sha1,
                                       q->queue[i]->one->sha1, 20);
+                               p->parent[n].mode = q->queue[i]->one->mode;
                                break;
                        }
                }
@@ -613,6 +618,7 @@ int show_combined_diff(struct combine_diff_path *elem, int num_parent,
        unsigned long size, cnt, lno;
        char *result, *cp, *ep;
        struct sline *sline; /* survived lines */
+       int mode_differs = 0;
        int i, show_hunks, shown_header = 0;
        char ourtmp_buf[TMPPATHLEN];
        char *ourtmp = ourtmp_buf;
@@ -688,20 +694,22 @@ int show_combined_diff(struct combine_diff_path *elem, int num_parent,
        for (i = 0; i < num_parent; i++) {
                int j;
                for (j = 0; j < i; j++) {
-                       if (!memcmp(elem->parent_sha1[i],
-                                   elem->parent_sha1[j], 20)) {
+                       if (!memcmp(elem->parent[i].sha1,
+                                   elem->parent[j].sha1, 20)) {
                                reuse_combine_diff(sline, cnt, i, j);
                                break;
                        }
                }
                if (i <= j)
-                       combine_diff(elem->parent_sha1[i], ourtmp, sline,
+                       combine_diff(elem->parent[i].sha1, ourtmp, sline,
                                     cnt, i, num_parent);
+               if (elem->parent[i].mode != elem->mode)
+                       mode_differs = 1;
        }
 
        show_hunks = make_hunks(sline, cnt, num_parent, dense);
 
-       if (show_hunks) {
+       if (show_hunks || mode_differs) {
                const char *abb;
                char null_abb[DEFAULT_ABBREV + 1];
 
@@ -719,8 +727,10 @@ int show_combined_diff(struct combine_diff_path *elem, int num_parent,
                putchar('\n');
                printf("index ");
                for (i = 0; i < num_parent; i++) {
-                       if (memcmp(elem->parent_sha1[i], null_sha1, 20))
-                               abb = find_unique_abbrev(elem->parent_sha1[i],
+                       if (elem->parent[i].mode != elem->mode)
+                               mode_differs = 1;
+                       if (memcmp(elem->parent[i].sha1, null_sha1, 20))
+                               abb = find_unique_abbrev(elem->parent[i].sha1,
                                                         DEFAULT_ABBREV);
                        else
                                abb = null_abb;
@@ -731,6 +741,16 @@ int show_combined_diff(struct combine_diff_path *elem, int num_parent,
                else
                        abb = null_abb;
                printf("..%s\n", abb);
+
+               if (mode_differs) {
+                       printf("mode ");
+                       for (i = 0; i < num_parent; i++) {
+                               printf("%s%06o", i ? "," : "",
+                                      elem->parent[i].mode);
+                       }
+                       printf("..%06o\n", elem->mode);
+               }
+               /* if (show_hunks) perhaps */
                dump_sline(sline, cnt, num_parent);
        }
        if (ourtmp == ourtmp_buf)

diff --git a/diff-files.c b/diff-files.c
index 4ba59f1..d24d11c 100644 (file)
--- a/diff-files.c
+++ b/diff-files.c
@@ -119,7 +119,7 @@ int main(int argc, const char **argv)
                if (ce_stage(ce)) {
                        struct {
                                struct combine_diff_path p;
-                               unsigned char fill[4][20];
+                               struct combine_diff_parent filler[5];
                        } combine;
                        int num_compare_stages = 0;
 
@@ -128,7 +128,10 @@ int main(int argc, const char **argv)
                        combine.p.path = xmalloc(combine.p.len + 1);
                        memcpy(combine.p.path, ce->name, combine.p.len);
                        combine.p.path[combine.p.len] = 0;
-                       memset(combine.p.sha1, 0, 100);
+                       combine.p.mode = 0;
+                       memset(combine.p.sha1, 0, 20);
+                       memset(&combine.p.parent[0], 0,
+                              sizeof(combine.filler));
 
                        while (i < entries) {
                                struct cache_entry *nce = active_cache[i];
@@ -142,9 +145,12 @@ int main(int argc, const char **argv)
                                 */
                                stage = ce_stage(nce);
                                if (2 <= stage) {
+                                       int mode = ntohl(nce->ce_mode);
                                        num_compare_stages++;
-                                       memcpy(combine.p.parent_sha1[stage-2],
+                                       memcpy(combine.p.parent[stage-2].sha1,
                                               nce->sha1, 20);
+                                       combine.p.parent[stage-2].mode =
+                                               DIFF_FILE_CANON_MODE(mode);
                                }
 
                                /* diff against the proper unmerged stage */

diff --git a/diff.h b/diff.h
index ff41c58..5c5e7fa 100644 (file)
--- a/diff.h
+++ b/diff.h
@@ -63,9 +63,16 @@ struct combine_diff_path {
        struct combine_diff_path *next;
        int len;
        char *path;
+       unsigned int mode;
        unsigned char sha1[20];
-       unsigned char parent_sha1[FLEX_ARRAY][20];
+       struct combine_diff_parent {
+               unsigned int mode;
+               unsigned char sha1[20];
+       } parent[FLEX_ARRAY];
 };
+#define combine_diff_path_size(n, l) \
+       (sizeof(struct combine_diff_path) + \
+        sizeof(struct combine_diff_parent) * (n) + (l) + 1)
 
 int show_combined_diff(struct combine_diff_path *elem, int num_parent,
                       int dense, const char *header);