Update draft release notes to 1.7.9
[gitweb.git] / revision.c
index 707a703a09d6c7ffc1adfcd89da83d5b97da397f..8764dde381111cfc9c8ea7eb3856223de9786ec9 100644 (file)
@@ -40,6 +40,47 @@ char *path_name(const struct name_path *path, const char *name)
        return n;
 }
 
+static int show_path_component_truncated(FILE *out, const char *name, int len)
+{
+       int cnt;
+       for (cnt = 0; cnt < len; cnt++) {
+               int ch = name[cnt];
+               if (!ch || ch == '\n')
+                       return -1;
+               fputc(ch, out);
+       }
+       return len;
+}
+
+static int show_path_truncated(FILE *out, const struct name_path *path)
+{
+       int emitted, ours;
+
+       if (!path)
+               return 0;
+       emitted = show_path_truncated(out, path->up);
+       if (emitted < 0)
+               return emitted;
+       if (emitted)
+               fputc('/', out);
+       ours = show_path_component_truncated(out, path->elem, path->elem_len);
+       if (ours < 0)
+               return ours;
+       return ours || emitted;
+}
+
+void show_object_with_name(FILE *out, struct object *obj, const struct name_path *path, const char *component)
+{
+       struct name_path leaf;
+       leaf.up = (struct name_path *)path;
+       leaf.elem = component;
+       leaf.elem_len = strlen(component);
+
+       fprintf(out, "%s ", sha1_to_hex(obj->sha1));
+       show_path_truncated(out, &leaf);
+       fputc('\n', out);
+}
+
 void add_object(struct object *obj,
                struct object_array *p,
                struct name_path *path,
@@ -133,6 +174,8 @@ void mark_parents_uninteresting(struct commit *commit)
 
 static void add_pending_object_with_mode(struct rev_info *revs, struct object *obj, const char *name, unsigned mode)
 {
+       if (!obj)
+               return;
        if (revs->no_walk && (obj->flags & UNINTERESTING))
                revs->no_walk = 0;
        if (revs->reflog_info && obj->type == OBJ_COMMIT) {
@@ -174,12 +217,22 @@ static struct object *get_reference(struct rev_info *revs, const char *name, con
        struct object *object;
 
        object = parse_object(sha1);
-       if (!object)
+       if (!object) {
+               if (revs->ignore_missing)
+                       return object;
                die("bad object %s", name);
+       }
        object->flags |= flags;
        return object;
 }
 
+void add_pending_sha1(struct rev_info *revs, const char *name,
+                     const unsigned char *sha1, unsigned int flags)
+{
+       struct object *object = get_reference(revs, name, sha1, flags);
+       add_pending_object(revs, object, name);
+}
+
 static struct commit *handle_commit(struct rev_info *revs, struct object *object, const char *name)
 {
        unsigned long flags = object->flags;
@@ -724,12 +777,16 @@ static void limit_to_ancestry(struct commit_list *bottom, struct commit_list *li
  * to filter the result of "A..B" further to the ones that can actually
  * reach A.
  */
-static struct commit_list *collect_bottom_commits(struct commit_list *list)
+static struct commit_list *collect_bottom_commits(struct rev_info *revs)
 {
-       struct commit_list *elem, *bottom = NULL;
-       for (elem = list; elem; elem = elem->next)
-               if (elem->item->object.flags & UNINTERESTING)
-                       commit_list_insert(elem->item, &bottom);
+       struct commit_list *bottom = NULL;
+       int i;
+       for (i = 0; i < revs->cmdline.nr; i++) {
+               struct rev_cmdline_entry *elem = &revs->cmdline.rev[i];
+               if ((elem->flags & UNINTERESTING) &&
+                   elem->item->type == OBJ_COMMIT)
+                       commit_list_insert((struct commit *)elem->item, &bottom);
+       }
        return bottom;
 }
 
@@ -760,7 +817,7 @@ static int limit_list(struct rev_info *revs)
        struct commit_list *bottom = NULL;
 
        if (revs->ancestry_path) {
-               bottom = collect_bottom_commits(list);
+               bottom = collect_bottom_commits(revs);
                if (!bottom)
                        die("--ancestry-path given but there are no bottom commits");
        }
@@ -817,6 +874,23 @@ static int limit_list(struct rev_info *revs)
        return 0;
 }
 
+static void add_rev_cmdline(struct rev_info *revs,
+                           struct object *item,
+                           const char *name,
+                           int whence,
+                           unsigned flags)
+{
+       struct rev_cmdline_info *info = &revs->cmdline;
+       int nr = info->nr;
+
+       ALLOC_GROW(info->rev, nr + 1, info->alloc);
+       info->rev[nr].item = item;
+       info->rev[nr].name = name;
+       info->rev[nr].whence = whence;
+       info->rev[nr].flags = flags;
+       info->nr++;
+}
+
 struct all_refs_cb {
        int all_flags;
        int warned_bad_reflog;
@@ -829,7 +903,8 @@ static int handle_one_ref(const char *path, const unsigned char *sha1, int flag,
        struct all_refs_cb *cb = cb_data;
        struct object *object = get_reference(cb->all_revs, path, sha1,
                                              cb->all_flags);
-       add_pending_object(cb->all_revs, object, path);
+       add_rev_cmdline(cb->all_revs, object, path, REV_CMD_REF, cb->all_flags);
+       add_pending_sha1(cb->all_revs, path, sha1, cb->all_flags);
        return 0;
 }
 
@@ -855,6 +930,7 @@ static void handle_one_reflog_commit(unsigned char *sha1, void *cb_data)
                struct object *o = parse_object(sha1);
                if (o) {
                        o->flags |= cb->all_flags;
+                       /* ??? CMDLINEFLAGS ??? */
                        add_pending_object(cb->all_revs, o, "");
                }
                else if (!cb->warned_bad_reflog) {
@@ -891,12 +967,13 @@ static void handle_reflog(struct rev_info *revs, unsigned flags)
        for_each_reflog(handle_one_reflog, &cb);
 }
 
-static int add_parents_only(struct rev_info *revs, const char *arg, int flags)
+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;
+       const char *arg = arg_;
 
        if (*arg == '^') {
                flags ^= UNINTERESTING;
@@ -906,6 +983,8 @@ static int add_parents_only(struct rev_info *revs, const char *arg, int flags)
                return 0;
        while (1) {
                it = get_reference(revs, arg, sha1, 0);
+               if (!it && revs->ignore_missing)
+                       return 0;
                if (it->type != OBJ_TAG)
                        break;
                if (!((struct tag*)it)->tagged)
@@ -918,6 +997,7 @@ static int add_parents_only(struct rev_info *revs, const char *arg, int flags)
        for (parents = commit->parents; parents; parents = parents->next) {
                it = &parents->item->object;
                it->flags |= flags;
+               add_rev_cmdline(revs, it, arg_, REV_CMD_PARENTS_ONLY, flags);
                add_pending_object(revs, it, arg);
        }
        return 1;
@@ -955,6 +1035,8 @@ void init_revisions(struct rev_info *revs, const char *prefix)
                revs->diffopt.prefix = prefix;
                revs->diffopt.prefix_length = strlen(prefix);
        }
+
+       revs->notes_opt.use_default_notes = -1;
 }
 
 static void add_pending_commit_list(struct rev_info *revs,
@@ -977,10 +1059,12 @@ static void prepare_show_merge(struct rev_info *revs)
        const char **prune = NULL;
        int i, prune_num = 1; /* counting terminating NULL */
 
-       if (get_sha1("HEAD", sha1) || !(head = lookup_commit(sha1)))
+       if (get_sha1("HEAD", sha1))
                die("--merge without HEAD?");
-       if (get_sha1("MERGE_HEAD", sha1) || !(other = lookup_commit(sha1)))
+       head = lookup_commit_or_die(sha1, "HEAD");
+       if (get_sha1("MERGE_HEAD", sha1))
                die("--merge without MERGE_HEAD?");
+       other = lookup_commit_or_die(sha1, "MERGE_HEAD");
        add_pending_object(revs, &head->object, "HEAD");
        add_pending_object(revs, &other->object, "MERGE_HEAD");
        bases = get_merge_bases(head, other, 1);
@@ -1009,7 +1093,7 @@ static void prepare_show_merge(struct rev_info *revs)
        revs->limited = 1;
 }
 
-int handle_revision_arg(const char *arg, struct rev_info *revs,
+int handle_revision_arg(const char *arg_, struct rev_info *revs,
                        int flags,
                        int cant_be_filename)
 {
@@ -1018,6 +1102,7 @@ int handle_revision_arg(const char *arg, struct rev_info *revs,
        struct object *object;
        unsigned char sha1[20];
        int local_flags;
+       const char *arg = arg_;
 
        dotdot = strstr(arg, "..");
        if (dotdot) {
@@ -1026,6 +1111,7 @@ int handle_revision_arg(const char *arg, struct rev_info *revs,
                const char *this = arg;
                int symmetric = *next == '.';
                unsigned int flags_exclude = flags ^ UNINTERESTING;
+               unsigned int a_flags;
 
                *dotdot = 0;
                next += symmetric;
@@ -1042,6 +1128,8 @@ int handle_revision_arg(const char *arg, struct rev_info *revs,
                        a = lookup_commit_reference(from_sha1);
                        b = lookup_commit_reference(sha1);
                        if (!a || !b) {
+                               if (revs->ignore_missing)
+                                       return 0;
                                die(symmetric ?
                                    "Invalid symmetric difference expression %s...%s" :
                                    "Invalid revision range %s..%s",
@@ -1058,10 +1146,15 @@ int handle_revision_arg(const char *arg, struct rev_info *revs,
                                add_pending_commit_list(revs, exclude,
                                                        flags_exclude);
                                free_commit_list(exclude);
-                               a->object.flags |= flags | SYMMETRIC_LEFT;
+                               a_flags = flags | SYMMETRIC_LEFT;
                        } else
-                               a->object.flags |= flags_exclude;
+                               a_flags = flags_exclude;
+                       a->object.flags |= a_flags;
                        b->object.flags |= flags;
+                       add_rev_cmdline(revs, &a->object, this,
+                                       REV_CMD_LEFT, a_flags);
+                       add_rev_cmdline(revs, &b->object, next,
+                                       REV_CMD_RIGHT, flags);
                        add_pending_object(revs, &a->object, this);
                        add_pending_object(revs, &b->object, next);
                        return 0;
@@ -1088,10 +1181,11 @@ int handle_revision_arg(const char *arg, struct rev_info *revs,
                arg++;
        }
        if (get_sha1_with_mode(arg, sha1, &mode))
-               return -1;
+               return revs->ignore_missing ? 0 : -1;
        if (!cant_be_filename)
                verify_non_filename(revs->prefix, arg);
        object = get_reference(revs, arg, sha1, flags ^ local_flags);
+       add_rev_cmdline(revs, object, arg_, REV_CMD_REV, flags ^ local_flags);
        add_pending_object_with_mode(revs, object, arg, mode);
        return 0;
 }
@@ -1177,7 +1271,9 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
            !strcmp(arg, "--tags") || !strcmp(arg, "--remotes") ||
            !strcmp(arg, "--reflog") || !strcmp(arg, "--not") ||
            !strcmp(arg, "--no-walk") || !strcmp(arg, "--do-walk") ||
-           !strcmp(arg, "--bisect"))
+           !strcmp(arg, "--bisect") || !prefixcmp(arg, "--glob=") ||
+           !prefixcmp(arg, "--branches=") || !prefixcmp(arg, "--tags=") ||
+           !prefixcmp(arg, "--remotes="))
        {
                unkv[(*unkc)++] = arg;
                return 1;
@@ -1329,6 +1425,11 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
                revs->tree_objects = 1;
                revs->blob_objects = 1;
                revs->edge_hint = 1;
+       } else if (!strcmp(arg, "--verify-objects")) {
+               revs->tag_objects = 1;
+               revs->tree_objects = 1;
+               revs->blob_objects = 1;
+               revs->verify_objects = 1;
        } else if (!strcmp(arg, "--unpacked")) {
                revs->unpacked = 1;
        } else if (!prefixcmp(arg, "--unpacked=")) {
@@ -1364,32 +1465,39 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
                revs->verbose_header = 1;
                revs->pretty_given = 1;
                get_commit_format(arg+9, revs);
-       } else if (!strcmp(arg, "--show-notes")) {
+       } else if (!strcmp(arg, "--show-notes") || !strcmp(arg, "--notes")) {
                revs->show_notes = 1;
                revs->show_notes_given = 1;
-       } else if (!prefixcmp(arg, "--show-notes=")) {
+               revs->notes_opt.use_default_notes = 1;
+       } else if (!prefixcmp(arg, "--show-notes=") ||
+                  !prefixcmp(arg, "--notes=")) {
                struct strbuf buf = STRBUF_INIT;
                revs->show_notes = 1;
                revs->show_notes_given = 1;
-               if (!revs->notes_opt.extra_notes_refs)
-                       revs->notes_opt.extra_notes_refs = xcalloc(1, sizeof(struct string_list));
-               if (!prefixcmp(arg+13, "refs/"))
-                       /* happy */;
-               else if (!prefixcmp(arg+13, "notes/"))
-                       strbuf_addstr(&buf, "refs/");
+               if (!prefixcmp(arg, "--show-notes")) {
+                       if (revs->notes_opt.use_default_notes < 0)
+                               revs->notes_opt.use_default_notes = 1;
+                       strbuf_addstr(&buf, arg+13);
+               }
                else
-                       strbuf_addstr(&buf, "refs/notes/");
-               strbuf_addstr(&buf, arg+13);
-               string_list_append(revs->notes_opt.extra_notes_refs,
+                       strbuf_addstr(&buf, arg+8);
+               expand_notes_ref(&buf);
+               string_list_append(&revs->notes_opt.extra_notes_refs,
                                   strbuf_detach(&buf, NULL));
        } else if (!strcmp(arg, "--no-notes")) {
                revs->show_notes = 0;
                revs->show_notes_given = 1;
+               revs->notes_opt.use_default_notes = -1;
+               /* we have been strdup'ing ourselves, so trick
+                * string_list into free()ing strings */
+               revs->notes_opt.extra_notes_refs.strdup_strings = 1;
+               string_list_clear(&revs->notes_opt.extra_notes_refs, 0);
+               revs->notes_opt.extra_notes_refs.strdup_strings = 0;
        } else if (!strcmp(arg, "--standard-notes")) {
                revs->show_notes_given = 1;
-               revs->notes_opt.suppress_default_notes = 0;
+               revs->notes_opt.use_default_notes = 1;
        } else if (!strcmp(arg, "--no-standard-notes")) {
-               revs->notes_opt.suppress_default_notes = 1;
+               revs->notes_opt.use_default_notes = 0;
        } else if (!strcmp(arg, "--oneline")) {
                revs->verbose_header = 1;
                get_commit_format("oneline", revs);
@@ -1417,6 +1525,9 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
                        revs->abbrev = 40;
        } else if (!strcmp(arg, "--abbrev-commit")) {
                revs->abbrev_commit = 1;
+               revs->abbrev_commit_given = 1;
+       } else if (!strcmp(arg, "--no-abbrev-commit")) {
+               revs->abbrev_commit = 0;
        } else if (!strcmp(arg, "--full-diff")) {
                revs->diff = 1;
                revs->full_diff = 1;
@@ -1463,6 +1574,8 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
        } else if (!strcmp(arg, "--children")) {
                revs->children.name = "children";
                revs->limited = 1;
+       } else if (!strcmp(arg, "--ignore-missing")) {
+               revs->ignore_missing = 1;
        } else {
                int opts = diff_opt_parse(&revs->diffopt, argv, argc);
                if (!opts)
@@ -1497,6 +1610,69 @@ static int for_each_good_bisect_ref(const char *submodule, each_ref_fn fn, void
        return for_each_ref_in_submodule(submodule, "refs/bisect/good", fn, cb_data);
 }
 
+static int handle_revision_pseudo_opt(const char *submodule,
+                               struct rev_info *revs,
+                               int argc, const char **argv, int *flags)
+{
+       const char *arg = argv[0];
+       const char *optarg;
+       int argcount;
+
+       /*
+        * NOTE!
+        *
+        * Commands like "git shortlog" will not accept the options below
+        * unless parse_revision_opt queues them (as opposed to erroring
+        * out).
+        *
+        * When implementing your new pseudo-option, remember to
+        * register it in the list at the top of handle_revision_opt.
+        */
+       if (!strcmp(arg, "--all")) {
+               handle_refs(submodule, revs, *flags, for_each_ref_submodule);
+               handle_refs(submodule, revs, *flags, head_ref_submodule);
+       } else if (!strcmp(arg, "--branches")) {
+               handle_refs(submodule, revs, *flags, for_each_branch_ref_submodule);
+       } else if (!strcmp(arg, "--bisect")) {
+               handle_refs(submodule, revs, *flags, for_each_bad_bisect_ref);
+               handle_refs(submodule, revs, *flags ^ UNINTERESTING, for_each_good_bisect_ref);
+               revs->bisect = 1;
+       } else if (!strcmp(arg, "--tags")) {
+               handle_refs(submodule, revs, *flags, for_each_tag_ref_submodule);
+       } else if (!strcmp(arg, "--remotes")) {
+               handle_refs(submodule, revs, *flags, for_each_remote_ref_submodule);
+       } else if ((argcount = parse_long_opt("glob", argv, &optarg))) {
+               struct all_refs_cb cb;
+               init_all_refs_cb(&cb, revs, *flags);
+               for_each_glob_ref(handle_one_ref, optarg, &cb);
+               return argcount;
+       } else if (!prefixcmp(arg, "--branches=")) {
+               struct all_refs_cb cb;
+               init_all_refs_cb(&cb, revs, *flags);
+               for_each_glob_ref_in(handle_one_ref, arg + 11, "refs/heads/", &cb);
+       } else if (!prefixcmp(arg, "--tags=")) {
+               struct all_refs_cb cb;
+               init_all_refs_cb(&cb, revs, *flags);
+               for_each_glob_ref_in(handle_one_ref, arg + 7, "refs/tags/", &cb);
+       } else if (!prefixcmp(arg, "--remotes=")) {
+               struct all_refs_cb cb;
+               init_all_refs_cb(&cb, revs, *flags);
+               for_each_glob_ref_in(handle_one_ref, arg + 10, "refs/remotes/", &cb);
+       } else if (!strcmp(arg, "--reflog")) {
+               handle_reflog(revs, *flags);
+       } else if (!strcmp(arg, "--not")) {
+               *flags ^= UNINTERESTING;
+       } else if (!strcmp(arg, "--no-walk")) {
+               revs->no_walk = 1;
+       } else if (!strcmp(arg, "--do-walk")) {
+               revs->no_walk = 0;
+       } else {
+               return 0;
+       }
+
+       return 1;
+}
+
 /*
  * Parse revision information, filling in the "rev_info" structure,
  * and removing the used arguments from the argument list.
@@ -1509,8 +1685,6 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, struct s
        int i, flags, left, seen_dashdash, read_from_stdin, got_rev_arg = 0;
        struct cmdline_pathspec prune_data;
        const char *submodule = NULL;
-       const char *optarg;
-       int argcount;
 
        memset(&prune_data, 0, sizeof(prune_data));
        if (opt)
@@ -1538,70 +1712,14 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, struct s
                if (*arg == '-') {
                        int opts;
 
-                       if (!strcmp(arg, "--all")) {
-                               handle_refs(submodule, revs, flags, for_each_ref_submodule);
-                               handle_refs(submodule, revs, flags, head_ref_submodule);
-                               continue;
-                       }
-                       if (!strcmp(arg, "--branches")) {
-                               handle_refs(submodule, revs, flags, for_each_branch_ref_submodule);
-                               continue;
-                       }
-                       if (!strcmp(arg, "--bisect")) {
-                               handle_refs(submodule, revs, flags, for_each_bad_bisect_ref);
-                               handle_refs(submodule, revs, flags ^ UNINTERESTING, for_each_good_bisect_ref);
-                               revs->bisect = 1;
-                               continue;
-                       }
-                       if (!strcmp(arg, "--tags")) {
-                               handle_refs(submodule, revs, flags, for_each_tag_ref_submodule);
-                               continue;
-                       }
-                       if (!strcmp(arg, "--remotes")) {
-                               handle_refs(submodule, revs, flags, for_each_remote_ref_submodule);
-                               continue;
-                       }
-                       if ((argcount = parse_long_opt("glob", argv + i, &optarg))) {
-                               struct all_refs_cb cb;
-                               i += argcount - 1;
-                               init_all_refs_cb(&cb, revs, flags);
-                               for_each_glob_ref(handle_one_ref, optarg, &cb);
-                               continue;
-                       }
-                       if (!prefixcmp(arg, "--branches=")) {
-                               struct all_refs_cb cb;
-                               init_all_refs_cb(&cb, revs, flags);
-                               for_each_glob_ref_in(handle_one_ref, arg + 11, "refs/heads/", &cb);
-                               continue;
-                       }
-                       if (!prefixcmp(arg, "--tags=")) {
-                               struct all_refs_cb cb;
-                               init_all_refs_cb(&cb, revs, flags);
-                               for_each_glob_ref_in(handle_one_ref, arg + 7, "refs/tags/", &cb);
-                               continue;
-                       }
-                       if (!prefixcmp(arg, "--remotes=")) {
-                               struct all_refs_cb cb;
-                               init_all_refs_cb(&cb, revs, flags);
-                               for_each_glob_ref_in(handle_one_ref, arg + 10, "refs/remotes/", &cb);
-                               continue;
-                       }
-                       if (!strcmp(arg, "--reflog")) {
-                               handle_reflog(revs, flags);
-                               continue;
-                       }
-                       if (!strcmp(arg, "--not")) {
-                               flags ^= UNINTERESTING;
-                               continue;
-                       }
-                       if (!strcmp(arg, "--no-walk")) {
-                               revs->no_walk = 1;
-                               continue;
-                       }
-                       if (!strcmp(arg, "--do-walk")) {
-                               revs->no_walk = 0;
+                       opts = handle_revision_pseudo_opt(submodule,
+                                               revs, argc - i, argv + i,
+                                               &flags);
+                       if (opts > 0) {
+                               i += opts - 1;
                                continue;
                        }
+
                        if (!strcmp(arg, "--stdin")) {
                                if (revs->disable_stdin) {
                                        argv[left++] = arg;
@@ -1645,6 +1763,20 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, struct s
        }
 
        if (prune_data.nr) {
+               /*
+                * If we need to introduce the magic "a lone ':' means no
+                * pathspec whatsoever", here is the place to do so.
+                *
+                * if (prune_data.nr == 1 && !strcmp(prune_data[0], ":")) {
+                *      prune_data.nr = 0;
+                *      prune_data.alloc = 0;
+                *      free(prune_data.path);
+                *      prune_data.path = NULL;
+                * } else {
+                *      terminate prune_data.alloc with NULL and
+                *      call init_pathspec() to set revs->prune_data here.
+                * }
+                */
                ALLOC_GROW(prune_data.path, prune_data.nr+1, prune_data.alloc);
                prune_data.path[prune_data.nr++] = NULL;
                init_pathspec(&revs->prune_data,
@@ -1925,7 +2057,8 @@ int prepare_revision_walk(struct rev_info *revs)
                }
                e++;
        }
-       free(list);
+       if (!revs->leak_pending)
+               free(list);
 
        if (revs->no_walk)
                return 0;