submodules: overhaul documentation
[gitweb.git] / revision.c
index c2091b6de7cd17e30779946b2631bcf42283951c..f88c14bab3188c65631593640289b26d00a6a3fc 100644 (file)
@@ -177,23 +177,23 @@ void add_pending_object(struct rev_info *revs,
 
 void add_head_to_pending(struct rev_info *revs)
 {
-       unsigned char sha1[20];
+       struct object_id oid;
        struct object *obj;
-       if (get_sha1("HEAD", sha1))
+       if (get_oid("HEAD", &oid))
                return;
-       obj = parse_object(sha1);
+       obj = parse_object(&oid);
        if (!obj)
                return;
        add_pending_object(revs, obj, "HEAD");
 }
 
 static struct object *get_reference(struct rev_info *revs, const char *name,
-                                   const unsigned char *sha1,
+                                   const struct object_id *oid,
                                    unsigned int flags)
 {
        struct object *object;
 
-       object = parse_object(sha1);
+       object = parse_object(oid);
        if (!object) {
                if (revs->ignore_missing)
                        return object;
@@ -203,10 +203,10 @@ static struct object *get_reference(struct rev_info *revs, const char *name,
        return object;
 }
 
-void add_pending_sha1(struct rev_info *revs, const char *name,
-                     const unsigned char *sha1, unsigned int flags)
+void add_pending_oid(struct rev_info *revs, const char *name,
+                     const struct object_id *oid, unsigned int flags)
 {
-       struct object *object = get_reference(revs, name, sha1, flags);
+       struct object *object = get_reference(revs, name, oid, flags);
        add_pending_object(revs, object, name);
 }
 
@@ -228,9 +228,9 @@ static struct commit *handle_commit(struct rev_info *revs,
                        add_pending_object(revs, object, tag->tag);
                if (!tag->tagged)
                        die("bad tag");
-               object = parse_object(tag->tagged->oid.hash);
+               object = parse_object(&tag->tagged->oid);
                if (!object) {
-                       if (flags & UNINTERESTING)
+                       if (revs->ignore_missing_links || (flags & UNINTERESTING))
                                return NULL;
                        die("bad object %s", oid_to_hex(&tag->tagged->oid));
                }
@@ -884,7 +884,7 @@ static void cherry_pick_list(struct commit_list *list, struct rev_info *revs)
 /* How many extra uninteresting commits we want to see.. */
 #define SLOP 5
 
-static int still_interesting(struct commit_list *src, unsigned long date, int slop,
+static int still_interesting(struct commit_list *src, timestamp_t date, int slop,
                             struct commit **interesting_cache)
 {
        /*
@@ -1018,7 +1018,7 @@ static void limit_left_right(struct commit_list *list, struct rev_info *revs)
 static int limit_list(struct rev_info *revs)
 {
        int slop = SLOP;
-       unsigned long date = ~0ul;
+       timestamp_t date = TIME_MAX;
        struct commit_list *list = revs->commits;
        struct commit_list *newlist = NULL;
        struct commit_list **p = &newlist;
@@ -1157,9 +1157,9 @@ static int handle_one_ref(const char *path, const struct object_id *oid,
        if (ref_excluded(cb->all_revs->ref_excludes, path))
            return 0;
 
-       object = get_reference(cb->all_revs, path, oid->hash, cb->all_flags);
+       object = get_reference(cb->all_revs, path, oid, cb->all_flags);
        add_rev_cmdline(cb->all_revs, object, path, REV_CMD_REF, cb->all_flags);
-       add_pending_sha1(cb->all_revs, path, oid->hash, cb->all_flags);
+       add_pending_oid(cb->all_revs, path, oid, cb->all_flags);
        return 0;
 }
 
@@ -1200,7 +1200,7 @@ static void handle_one_reflog_commit(struct object_id *oid, void *cb_data)
 {
        struct all_refs_cb *cb = cb_data;
        if (!is_null_oid(oid)) {
-               struct object *o = parse_object(oid->hash);
+               struct object *o = parse_object(oid);
                if (o) {
                        o->flags |= cb->all_flags;
                        /* ??? CMDLINEFLAGS ??? */
@@ -1215,7 +1215,7 @@ static void handle_one_reflog_commit(struct object_id *oid, void *cb_data)
 }
 
 static int handle_one_reflog_ent(struct object_id *ooid, struct object_id *noid,
-               const char *email, unsigned long timestamp, int tz,
+               const char *email, timestamp_t timestamp, int tz,
                const char *message, void *cb_data)
 {
        handle_one_reflog_commit(ooid, cb_data);
@@ -1292,7 +1292,7 @@ void add_index_objects_to_pending(struct rev_info *revs, unsigned flags)
 static int add_parents_only(struct rev_info *revs, const char *arg_, int flags,
                            int exclude_parent)
 {
-       unsigned char sha1[20];
+       struct object_id oid;
        struct object *it;
        struct commit *commit;
        struct commit_list *parents;
@@ -1303,17 +1303,17 @@ static int add_parents_only(struct rev_info *revs, const char *arg_, int flags,
                flags ^= UNINTERESTING | BOTTOM;
                arg++;
        }
-       if (get_sha1_committish(arg, sha1))
+       if (get_sha1_committish(arg, oid.hash))
                return 0;
        while (1) {
-               it = get_reference(revs, arg, sha1, 0);
+               it = get_reference(revs, arg, &oid, 0);
                if (!it && revs->ignore_missing)
                        return 0;
                if (it->type != OBJ_TAG)
                        break;
                if (!((struct tag*)it)->tagged)
                        return 0;
-               hashcpy(sha1, ((struct tag*)it)->tagged->oid.hash);
+               oidcpy(&oid, &((struct tag*)it)->tagged->oid);
        }
        if (it->type != OBJ_COMMIT)
                return 0;
@@ -1429,134 +1429,168 @@ static void prepare_show_merge(struct rev_info *revs)
        revs->limited = 1;
 }
 
+static int dotdot_missing(const char *arg, char *dotdot,
+                         struct rev_info *revs, int symmetric)
+{
+       if (revs->ignore_missing)
+               return 0;
+       /* de-munge so we report the full argument */
+       *dotdot = '.';
+       die(symmetric
+           ? "Invalid symmetric difference expression %s"
+           : "Invalid revision range %s", arg);
+}
+
+static int handle_dotdot_1(const char *arg, char *dotdot,
+                          struct rev_info *revs, int flags,
+                          int cant_be_filename,
+                          struct object_context *a_oc,
+                          struct object_context *b_oc)
+{
+       const char *a_name, *b_name;
+       struct object_id a_oid, b_oid;
+       struct object *a_obj, *b_obj;
+       unsigned int a_flags, b_flags;
+       int symmetric = 0;
+       unsigned int flags_exclude = flags ^ (UNINTERESTING | BOTTOM);
+       unsigned int oc_flags = GET_SHA1_COMMITTISH | GET_SHA1_RECORD_PATH;
+
+       a_name = arg;
+       if (!*a_name)
+               a_name = "HEAD";
+
+       b_name = dotdot + 2;
+       if (*b_name == '.') {
+               symmetric = 1;
+               b_name++;
+       }
+       if (!*b_name)
+               b_name = "HEAD";
+
+       if (get_sha1_with_context(a_name, oc_flags, a_oid.hash, a_oc) ||
+           get_sha1_with_context(b_name, oc_flags, b_oid.hash, b_oc))
+               return -1;
+
+       if (!cant_be_filename) {
+               *dotdot = '.';
+               verify_non_filename(revs->prefix, arg);
+               *dotdot = '\0';
+       }
+
+       a_obj = parse_object(&a_oid);
+       b_obj = parse_object(&b_oid);
+       if (!a_obj || !b_obj)
+               return dotdot_missing(arg, dotdot, revs, symmetric);
+
+       if (!symmetric) {
+               /* just A..B */
+               b_flags = flags;
+               a_flags = flags_exclude;
+       } else {
+               /* A...B -- find merge bases between the two */
+               struct commit *a, *b;
+               struct commit_list *exclude;
+
+               a = lookup_commit_reference(&a_obj->oid);
+               b = lookup_commit_reference(&b_obj->oid);
+               if (!a || !b)
+                       return dotdot_missing(arg, dotdot, revs, symmetric);
+
+               exclude = get_merge_bases(a, b);
+               add_rev_cmdline_list(revs, exclude, REV_CMD_MERGE_BASE,
+                                    flags_exclude);
+               add_pending_commit_list(revs, exclude, flags_exclude);
+               free_commit_list(exclude);
+
+               b_flags = flags;
+               a_flags = flags | SYMMETRIC_LEFT;
+       }
+
+       a_obj->flags |= a_flags;
+       b_obj->flags |= b_flags;
+       add_rev_cmdline(revs, a_obj, a_name, REV_CMD_LEFT, a_flags);
+       add_rev_cmdline(revs, b_obj, b_name, REV_CMD_RIGHT, b_flags);
+       add_pending_object_with_path(revs, a_obj, a_name, a_oc->mode, a_oc->path);
+       add_pending_object_with_path(revs, b_obj, b_name, b_oc->mode, b_oc->path);
+       return 0;
+}
+
+static int handle_dotdot(const char *arg,
+                        struct rev_info *revs, int flags,
+                        int cant_be_filename)
+{
+       struct object_context a_oc, b_oc;
+       char *dotdot = strstr(arg, "..");
+       int ret;
+
+       if (!dotdot)
+               return -1;
+
+       memset(&a_oc, 0, sizeof(a_oc));
+       memset(&b_oc, 0, sizeof(b_oc));
+
+       *dotdot = '\0';
+       ret = handle_dotdot_1(arg, dotdot, revs, flags, cant_be_filename,
+                             &a_oc, &b_oc);
+       *dotdot = '.';
+
+       free(a_oc.path);
+       free(b_oc.path);
+
+       return ret;
+}
+
 int handle_revision_arg(const char *arg_, struct rev_info *revs, int flags, unsigned revarg_opt)
 {
        struct object_context oc;
-       char *dotdot;
+       char *mark;
        struct object *object;
-       unsigned char sha1[20];
+       struct object_id oid;
        int local_flags;
        const char *arg = arg_;
        int cant_be_filename = revarg_opt & REVARG_CANNOT_BE_FILENAME;
-       unsigned get_sha1_flags = 0;
+       unsigned get_sha1_flags = GET_SHA1_RECORD_PATH;
 
        flags = flags & UNINTERESTING ? flags | BOTTOM : flags & ~BOTTOM;
 
-       dotdot = strstr(arg, "..");
-       if (dotdot) {
-               unsigned char from_sha1[20];
-               const char *next = dotdot + 2;
-               const char *this = arg;
-               int symmetric = *next == '.';
-               unsigned int flags_exclude = flags ^ (UNINTERESTING | BOTTOM);
-               static const char head_by_default[] = "HEAD";
-               unsigned int a_flags;
-
-               *dotdot = 0;
-               next += symmetric;
-
-               if (!*next)
-                       next = head_by_default;
-               if (dotdot == arg)
-                       this = head_by_default;
-               if (this == head_by_default && next == head_by_default &&
-                   !symmetric) {
-                       /*
-                        * Just ".."?  That is not a range but the
-                        * pathspec for the parent directory.
-                        */
-                       if (!cant_be_filename) {
-                               *dotdot = '.';
-                               return -1;
-                       }
-               }
-               if (!get_sha1_committish(this, from_sha1) &&
-                   !get_sha1_committish(next, sha1)) {
-                       struct object *a_obj, *b_obj;
-
-                       if (!cant_be_filename) {
-                               *dotdot = '.';
-                               verify_non_filename(revs->prefix, arg);
-                       }
-
-                       a_obj = parse_object(from_sha1);
-                       b_obj = parse_object(sha1);
-                       if (!a_obj || !b_obj) {
-                       missing:
-                               if (revs->ignore_missing)
-                                       return 0;
-                               die(symmetric
-                                   ? "Invalid symmetric difference expression %s"
-                                   : "Invalid revision range %s", arg);
-                       }
-
-                       if (!symmetric) {
-                               /* just A..B */
-                               a_flags = flags_exclude;
-                       } else {
-                               /* A...B -- find merge bases between the two */
-                               struct commit *a, *b;
-                               struct commit_list *exclude;
-
-                               a = (a_obj->type == OBJ_COMMIT
-                                    ? (struct commit *)a_obj
-                                    : lookup_commit_reference(&a_obj->oid));
-                               b = (b_obj->type == OBJ_COMMIT
-                                    ? (struct commit *)b_obj
-                                    : lookup_commit_reference(&b_obj->oid));
-                               if (!a || !b)
-                                       goto missing;
-                               exclude = get_merge_bases(a, b);
-                               add_rev_cmdline_list(revs, exclude,
-                                                    REV_CMD_MERGE_BASE,
-                                                    flags_exclude);
-                               add_pending_commit_list(revs, exclude,
-                                                       flags_exclude);
-                               free_commit_list(exclude);
-
-                               a_flags = flags | SYMMETRIC_LEFT;
-                       }
-
-                       a_obj->flags |= a_flags;
-                       b_obj->flags |= flags;
-                       add_rev_cmdline(revs, a_obj, this,
-                                       REV_CMD_LEFT, a_flags);
-                       add_rev_cmdline(revs, b_obj, next,
-                                       REV_CMD_RIGHT, flags);
-                       add_pending_object(revs, a_obj, this);
-                       add_pending_object(revs, b_obj, next);
-                       return 0;
-               }
-               *dotdot = '.';
+       if (!cant_be_filename && !strcmp(arg, "..")) {
+               /*
+                * Just ".."?  That is not a range but the
+                * pathspec for the parent directory.
+                */
+               return -1;
        }
 
-       dotdot = strstr(arg, "^@");
-       if (dotdot && !dotdot[2]) {
-               *dotdot = 0;
+       if (!handle_dotdot(arg, revs, flags, revarg_opt))
+               return 0;
+
+       mark = strstr(arg, "^@");
+       if (mark && !mark[2]) {
+               *mark = 0;
                if (add_parents_only(revs, arg, flags, 0))
                        return 0;
-               *dotdot = '^';
+               *mark = '^';
        }
-       dotdot = strstr(arg, "^!");
-       if (dotdot && !dotdot[2]) {
-               *dotdot = 0;
+       mark = strstr(arg, "^!");
+       if (mark && !mark[2]) {
+               *mark = 0;
                if (!add_parents_only(revs, arg, flags ^ (UNINTERESTING | BOTTOM), 0))
-                       *dotdot = '^';
+                       *mark = '^';
        }
-       dotdot = strstr(arg, "^-");
-       if (dotdot) {
+       mark = strstr(arg, "^-");
+       if (mark) {
                int exclude_parent = 1;
 
-               if (dotdot[2]) {
+               if (mark[2]) {
                        char *end;
-                       exclude_parent = strtoul(dotdot + 2, &end, 10);
+                       exclude_parent = strtoul(mark + 2, &end, 10);
                        if (*end != '\0' || !exclude_parent)
                                return -1;
                }
 
-               *dotdot = 0;
+               *mark = 0;
                if (!add_parents_only(revs, arg, flags ^ (UNINTERESTING | BOTTOM), exclude_parent))
-                       *dotdot = '^';
+                       *mark = '^';
        }
 
        local_flags = 0;
@@ -1566,15 +1600,16 @@ int handle_revision_arg(const char *arg_, struct rev_info *revs, int flags, unsi
        }
 
        if (revarg_opt & REVARG_COMMITTISH)
-               get_sha1_flags = GET_SHA1_COMMITTISH;
+               get_sha1_flags |= GET_SHA1_COMMITTISH;
 
-       if (get_sha1_with_context(arg, get_sha1_flags, sha1, &oc))
+       if (get_sha1_with_context(arg, get_sha1_flags, oid.hash, &oc))
                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);
+       object = get_reference(revs, arg, &oid, flags ^ local_flags);
        add_rev_cmdline(revs, object, arg_, REV_CMD_REV, flags ^ local_flags);
-       add_pending_object_with_mode(revs, object, arg, oc.mode);
+       add_pending_object_with_path(revs, object, arg, oc.mode, oc.path);
+       free(oc.path);
        return 0;
 }
 
@@ -1991,6 +2026,7 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
        } else if (!strcmp(arg, "--extended-regexp") || !strcmp(arg, "-E")) {
                revs->grep_filter.pattern_type_option = GREP_PATTERN_TYPE_ERE;
        } else if (!strcmp(arg, "--regexp-ignore-case") || !strcmp(arg, "-i")) {
+               revs->grep_filter.ignore_case = 1;
                revs->grep_filter.regflags |= REG_ICASE;
                DIFF_OPT_SET(&revs->diffopt, PICKAXE_IGNORE_CASE);
        } else if (!strcmp(arg, "--fixed-strings") || !strcmp(arg, "-F")) {
@@ -2287,12 +2323,12 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, struct s
        if (revs->show_merge)
                prepare_show_merge(revs);
        if (revs->def && !revs->pending.nr && !got_rev_arg) {
-               unsigned char sha1[20];
+               struct object_id oid;
                struct object *object;
                struct object_context oc;
-               if (get_sha1_with_context(revs->def, 0, sha1, &oc))
+               if (get_sha1_with_context(revs->def, 0, oid.hash, &oc))
                        diagnose_missing_default(revs->def);
-               object = get_reference(revs, revs->def, sha1, 0);
+               object = get_reference(revs, revs->def, &oid, 0);
                add_pending_object_with_mode(revs, object, revs->def, oc.mode);
        }