t3200-branch: test -M
[gitweb.git] / revision.c
index f40ccf14269a3325f4f3069ce931bb73e1d1f27e..615535c98453336323a437530132f27824b51ac2 100644 (file)
@@ -497,24 +497,14 @@ static int rev_compare_tree(struct rev_info *revs,
 static int rev_same_tree_as_empty(struct rev_info *revs, struct commit *commit)
 {
        int retval;
-       void *tree;
-       unsigned long size;
-       struct tree_desc empty, real;
        struct tree *t1 = commit->tree;
 
        if (!t1)
                return 0;
 
-       tree = read_object_with_reference(t1->object.sha1, tree_type, &size, NULL);
-       if (!tree)
-               return 0;
-       init_tree_desc(&real, tree, size);
-       init_tree_desc(&empty, "", 0);
-
        tree_difference = REV_TREE_SAME;
        DIFF_OPT_CLR(&revs->pruning, HAS_CHANGES);
-       retval = diff_tree(&empty, &real, "", &revs->pruning);
-       free(tree);
+       retval = diff_tree_sha1(NULL, t1->object.sha1, "", &revs->pruning);
 
        return retval >= 0 && (tree_difference == REV_TREE_SAME);
 }
@@ -784,6 +774,10 @@ static int add_parents_to_list(struct rev_info *revs, struct commit *commit,
                return 0;
        commit->object.flags |= ADDED;
 
+       if (revs->include_check &&
+           !revs->include_check(commit, revs->include_check_data))
+               return 0;
+
        /*
         * If the commit is uninteresting, don't try to
         * prune parents - we want the maximal uninteresting
@@ -1192,7 +1186,7 @@ int ref_excluded(struct string_list *ref_excludes, const char *path)
        if (!ref_excludes)
                return 0;
        for_each_string_list_item(item, ref_excludes) {
-               if (!fnmatch(item->string, path, 0))
+               if (!wildmatch(item->string, path, 0, NULL))
                        return 1;
        }
        return 0;
@@ -1581,6 +1575,10 @@ static void read_revisions_from_stdin(struct rev_info *revs,
 {
        struct strbuf sb;
        int seen_dashdash = 0;
+       int save_warning;
+
+       save_warning = warn_on_object_refname_ambiguity;
+       warn_on_object_refname_ambiguity = 0;
 
        strbuf_init(&sb, 1000);
        while (strbuf_getwholeline(&sb, stdin, '\n') != EOF) {
@@ -1602,7 +1600,9 @@ static void read_revisions_from_stdin(struct rev_info *revs,
        }
        if (seen_dashdash)
                read_pathspec_from_stdin(revs, &sb, prune);
+
        strbuf_release(&sb);
+       warn_on_object_refname_ambiguity = save_warning;
 }
 
 static void add_grep(struct rev_info *revs, const char *ptn, enum grep_pat_token what)
@@ -1633,6 +1633,7 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
            !strcmp(arg, "--reflog") || !strcmp(arg, "--not") ||
            !strcmp(arg, "--no-walk") || !strcmp(arg, "--do-walk") ||
            !strcmp(arg, "--bisect") || starts_with(arg, "--glob=") ||
+           starts_with(arg, "--exclude=") ||
            starts_with(arg, "--branches=") || starts_with(arg, "--tags=") ||
            starts_with(arg, "--remotes=") || starts_with(arg, "--no-walk="))
        {
@@ -1648,8 +1649,10 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
                revs->skip_count = atoi(optarg);
                return argcount;
        } else if ((*arg == '-') && isdigit(arg[1])) {
-       /* accept -<digit>, like traditional "head" */
-               revs->max_count = atoi(arg + 1);
+               /* accept -<digit>, like traditional "head" */
+               if (strtol_i(arg + 1, 10, &revs->max_count) < 0 ||
+                   revs->max_count < 0)
+                       die("'%s': not a non-negative integer", arg + 1);
                revs->no_walk = 0;
        } else if (!strcmp(arg, "-n")) {
                if (argc <= 1)
@@ -1822,7 +1825,7 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
        } else if (!strcmp(arg, "--pretty")) {
                revs->verbose_header = 1;
                revs->pretty_given = 1;
-               get_commit_format(arg+8, revs);
+               get_commit_format(NULL, revs);
        } else if (starts_with(arg, "--pretty=") || starts_with(arg, "--format=")) {
                /*
                 * Detached form ("--pretty X" as opposed to "--pretty=X")
@@ -1837,6 +1840,14 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
                revs->notes_opt.use_default_notes = 1;
        } else if (!strcmp(arg, "--show-signature")) {
                revs->show_signature = 1;
+       } else if (!strcmp(arg, "--show-linear-break") ||
+                  starts_with(arg, "--show-linear-break=")) {
+               if (starts_with(arg, "--show-linear-break="))
+                       revs->break_bar = xstrdup(arg + 20);
+               else
+                       revs->break_bar = "                    ..........";
+               revs->track_linear = 1;
+               revs->track_first_time = 1;
        } else if (starts_with(arg, "--show-notes=") ||
                   starts_with(arg, "--notes=")) {
                struct strbuf buf = STRBUF_INIT;
@@ -1960,6 +1971,8 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
                        unkv[(*unkc)++] = arg;
                return opts;
        }
+       if (revs->graph && revs->track_linear)
+               die("--show-linear-break and --graph are incompatible");
 
        return 1;
 }
@@ -2778,7 +2791,7 @@ static int commit_match(struct commit *commit, struct rev_info *opt)
 {
        int retval;
        const char *encoding;
-       char *message;
+       const char *message;
        struct strbuf buf = STRBUF_INIT;
 
        if (!opt->grep_filter.pattern_list && !opt->grep_filter.header_list)
@@ -2820,14 +2833,21 @@ static int commit_match(struct commit *commit, struct rev_info *opt)
                format_display_notes(commit->object.sha1, &buf, encoding, 1);
        }
 
-       /* Find either in the original commit message, or in the temporary */
+       /*
+        * Find either in the original commit message, or in the temporary.
+        * Note that we cast away the constness of "message" here. It is
+        * const because it may come from the cached commit buffer. That's OK,
+        * because we know that it is modifiable heap memory, and that while
+        * grep_buffer may modify it for speed, it will restore any
+        * changes before returning.
+        */
        if (buf.len)
                retval = grep_buffer(&opt->grep_filter, buf.buf, buf.len);
        else
                retval = grep_buffer(&opt->grep_filter,
-                                    message, strlen(message));
+                                    (char *)message, strlen(message));
        strbuf_release(&buf);
-       logmsg_free(message, commit);
+       unuse_commit_buffer(commit, message);
        return retval;
 }
 
@@ -2902,6 +2922,27 @@ enum commit_action simplify_commit(struct rev_info *revs, struct commit *commit)
        return action;
 }
 
+static void track_linear(struct rev_info *revs, struct commit *commit)
+{
+       if (revs->track_first_time) {
+               revs->linear = 1;
+               revs->track_first_time = 0;
+       } else {
+               struct commit_list *p;
+               for (p = revs->previous_parents; p; p = p->next)
+                       if (p->item == NULL || /* first commit */
+                           !hashcmp(p->item->object.sha1, commit->object.sha1))
+                               break;
+               revs->linear = p != NULL;
+       }
+       if (revs->reverse) {
+               if (revs->linear)
+                       commit->object.flags |= TRACK_LINEAR;
+       }
+       free_commit_list(revs->previous_parents);
+       revs->previous_parents = copy_commit_list(commit->parents);
+}
+
 static struct commit *get_revision_1(struct rev_info *revs)
 {
        if (!revs->commits)
@@ -2929,9 +2970,11 @@ static struct commit *get_revision_1(struct rev_info *revs)
                        if (revs->max_age != -1 &&
                            (commit->date < revs->max_age))
                                continue;
-                       if (add_parents_to_list(revs, commit, &revs->commits, NULL) < 0)
-                               die("Failed to traverse parents of commit %s",
-                                   sha1_to_hex(commit->object.sha1));
+                       if (add_parents_to_list(revs, commit, &revs->commits, NULL) < 0) {
+                               if (!revs->ignore_missing_links)
+                                       die("Failed to traverse parents of commit %s",
+                                               sha1_to_hex(commit->object.sha1));
+                       }
                }
 
                switch (simplify_commit(revs, commit)) {
@@ -2941,6 +2984,8 @@ static struct commit *get_revision_1(struct rev_info *revs)
                        die("Failed to simplify parents of commit %s",
                            sha1_to_hex(commit->object.sha1));
                default:
+                       if (revs->track_linear)
+                               track_linear(revs, commit);
                        return commit;
                }
        } while (revs->commits);
@@ -3107,14 +3152,23 @@ struct commit *get_revision(struct rev_info *revs)
                revs->reverse_output_stage = 1;
        }
 
-       if (revs->reverse_output_stage)
-               return pop_commit(&revs->commits);
+       if (revs->reverse_output_stage) {
+               c = pop_commit(&revs->commits);
+               if (revs->track_linear)
+                       revs->linear = !!(c && c->object.flags & TRACK_LINEAR);
+               return c;
+       }
 
        c = get_revision_internal(revs);
        if (c && revs->graph)
                graph_update(revs->graph, c);
-       if (!c)
+       if (!c) {
                free_saved_parents(revs);
+               if (revs->previous_parents) {
+                       free_commit_list(revs->previous_parents);
+                       revs->previous_parents = NULL;
+               }
+       }
        return c;
 }