simple euristic for further free packing improvements
[gitweb.git] / revision.c
index f8fb02885589e3243b4b44692594861f98843d69..2294b16ea2aa0b508073e7800ccb5975a2254301 100644 (file)
@@ -152,6 +152,7 @@ static struct commit *handle_commit(struct rev_info *revs, struct object *object
                if (parse_commit(commit) < 0)
                        die("unable to parse commit %s", name);
                if (flags & UNINTERESTING) {
+                       commit->object.flags |= UNINTERESTING;
                        mark_parents_uninteresting(commit);
                        revs->limited = 1;
                }
@@ -476,6 +477,36 @@ static void handle_all(struct rev_info *revs, unsigned flags)
        for_each_ref(handle_one_ref);
 }
 
+static int add_parents_only(struct rev_info *revs, const char *arg, int flags)
+{
+       unsigned char sha1[20];
+       struct object *it;
+       struct commit *commit;
+       struct commit_list *parents;
+
+       if (*arg == '^') {
+               flags ^= UNINTERESTING;
+               arg++;
+       }
+       if (get_sha1(arg, sha1))
+               return 0;
+       while (1) {
+               it = get_reference(revs, arg, sha1, 0);
+               if (strcmp(it->type, tag_type))
+                       break;
+               memcpy(sha1, ((struct tag*)it)->tagged->sha1, 20);
+       }
+       if (strcmp(it->type, commit_type))
+               return 0;
+       commit = (struct commit *)it;
+       for (parents = commit->parents; parents; parents = parents->next) {
+               it = &parents->item->object;
+               it->flags |= flags;
+               add_pending_object(revs, it, arg);
+       }
+       return 1;
+}
+
 void init_revisions(struct rev_info *revs)
 {
        memset(revs, 0, sizeof(*revs));
@@ -498,7 +529,6 @@ void init_revisions(struct rev_info *revs)
        revs->topo_setter = topo_sort_default_setter;
        revs->topo_getter = topo_sort_default_getter;
 
-       revs->header_prefix = "";
        revs->commit_format = CMIT_FMT_DEFAULT;
 
        diff_setup(&revs->diffopt);
@@ -544,7 +574,7 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
                                revs->max_count = atoi(arg + 12);
                                continue;
                        }
-                       /* accept -<digit>, like traditilnal "head" */
+                       /* accept -<digit>, like traditional "head" */
                        if ((*arg == '-') && isdigit(arg[1])) {
                                revs->max_count = atoi(arg + 1);
                                continue;
@@ -664,6 +694,7 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
                        }
                        if (!strcmp(arg, "-c")) {
                                revs->diff = 1;
+                               revs->dense_combined_merges = 0;
                                revs->combine_merges = 1;
                                continue;
                        }
@@ -675,12 +706,10 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
                        }
                        if (!strcmp(arg, "-v")) {
                                revs->verbose_header = 1;
-                               revs->header_prefix = "diff-tree ";
                                continue;
                        }
                        if (!strncmp(arg, "--pretty", 8)) {
                                revs->verbose_header = 1;
-                               revs->header_prefix = "diff-tree ";
                                revs->commit_format = get_commit_format(arg+8);
                                continue;
                        }
@@ -742,39 +771,56 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
                                include = get_reference(revs, next, sha1, flags);
                                if (!exclude || !include)
                                        die("Invalid revision range %s..%s", arg, next);
+
+                               if (!seen_dashdash) {
+                                       *dotdot = '.';
+                                       verify_non_filename(revs->prefix, arg);
+                               }
                                add_pending_object(revs, exclude, this);
                                add_pending_object(revs, include, next);
                                continue;
                        }
                        *dotdot = '.';
                }
+               dotdot = strstr(arg, "^@");
+               if (dotdot && !dotdot[2]) {
+                       *dotdot = 0;
+                       if (add_parents_only(revs, arg, flags))
+                               continue;
+                       *dotdot = '^';
+               }
                local_flags = 0;
                if (*arg == '^') {
                        local_flags = UNINTERESTING;
                        arg++;
                }
-               if (get_sha1(arg, sha1) < 0) {
-                       struct stat st;
+               if (get_sha1(arg, sha1)) {
                        int j;
 
                        if (seen_dashdash || local_flags)
                                die("bad revision '%s'", arg);
 
-                       /* If we didn't have a "--", all filenames must exist */
-                       for (j = i; j < argc; j++) {
-                               if (lstat(argv[j], &st) < 0)
-                                       die("'%s': %s", argv[j], strerror(errno));
-                       }
+                       /* If we didn't have a "--":
+                        * (1) all filenames must exist;
+                        * (2) all rev-args must not be interpretable
+                        *     as a valid filename.
+                        * but the latter we have checked in the main loop.
+                        */
+                       for (j = i; j < argc; j++)
+                               verify_filename(revs->prefix, argv[j]);
+
                        revs->prune_data = get_pathspec(revs->prefix, argv + i);
                        break;
                }
+               if (!seen_dashdash)
+                       verify_non_filename(revs->prefix, arg);
                object = get_reference(revs, arg, sha1, flags ^ local_flags);
                add_pending_object(revs, object, arg);
        }
        if (def && !revs->pending_objects) {
                unsigned char sha1[20];
                struct object *object;
-               if (get_sha1(def, sha1) < 0)
+               if (get_sha1(def, sha1))
                        die("bad default revision '%s'", def);
                object = get_reference(revs, def, sha1, 0);
                add_pending_object(revs, object, def);
@@ -791,11 +837,10 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
        }
        if (revs->combine_merges) {
                revs->ignore_merges = 0;
-               if (revs->dense_combined_merges)
+               if (revs->dense_combined_merges &&
+                   (revs->diffopt.output_format != DIFF_FORMAT_DIFFSTAT))
                        revs->diffopt.output_format = DIFF_FORMAT_PATCH;
        }
-       if (revs->diffopt.output_format == DIFF_FORMAT_PATCH)
-               revs->diffopt.recursive = 1;
        revs->diffopt.abbrev = revs->abbrev;
        diff_setup_done(&revs->diffopt);
 
@@ -856,6 +901,17 @@ static void rewrite_parents(struct rev_info *revs, struct commit *commit)
        }
 }
 
+static void mark_boundary_to_show(struct commit *commit)
+{
+       struct commit_list *p = commit->parents;
+       while (p) {
+               commit = p->item;
+               p = p->next;
+               if (commit->object.flags & BOUNDARY)
+                       commit->object.flags |= BOUNDARY_SHOW;
+       }
+}
+
 struct commit *get_revision(struct rev_info *revs)
 {
        struct commit_list *list = revs->commits;
@@ -893,8 +949,20 @@ struct commit *get_revision(struct rev_info *revs)
                }
                if (commit->object.flags & SHOWN)
                        continue;
-               if (!(commit->object.flags & BOUNDARY) &&
-                   (commit->object.flags & UNINTERESTING))
+
+               /* We want to show boundary commits only when their
+                * children are shown.  When path-limiter is in effect,
+                * rewrite_parents() drops some commits from getting shown,
+                * and there is no point showing boundary parents that
+                * are not shown.  After rewrite_parents() rewrites the
+                * parents of a commit that is shown, we mark the boundary
+                * parents with BOUNDARY_SHOW.
+                */
+               if (commit->object.flags & BOUNDARY_SHOW) {
+                       commit->object.flags |= SHOWN;
+                       return commit;
+               }
+               if (commit->object.flags & UNINTERESTING)
                        continue;
                if (revs->min_age != -1 && (commit->date > revs->min_age))
                        continue;
@@ -907,6 +975,8 @@ struct commit *get_revision(struct rev_info *revs)
                        if (revs->parents)
                                rewrite_parents(revs, commit);
                }
+               if (revs->boundary)
+                       mark_boundary_to_show(commit);
                commit->object.flags |= SHOWN;
                return commit;
        } while (revs->commits);