Merge branch 'kn/ref-filter-branch-list' into maint
[gitweb.git] / ref-filter.c
index 238888e4de342c601b26650251a235ffeb3190f2..467c0279c9b6370b57080b5f1fcf20bdfd7e451e 100644 (file)
@@ -15,6 +15,7 @@
 #include "version.h"
 #include "trailer.h"
 #include "wt-status.h"
+#include "commit-slab.h"
 
 static struct ref_msg {
        const char *gone;
@@ -1256,12 +1257,18 @@ char *get_head_description(void)
                strbuf_addf(&desc, _("(no branch, bisect started on %s)"),
                            state.branch);
        else if (state.detached_from) {
-               /* TRANSLATORS: make sure these match _("HEAD detached at ")
-                  and _("HEAD detached from ") in wt-status.c */
                if (state.detached_at)
+                       /*
+                        * TRANSLATORS: make sure this matches "HEAD
+                        * detached at " in wt-status.c
+                        */
                        strbuf_addf(&desc, _("(HEAD detached at %s)"),
                                state.detached_from);
                else
+                       /*
+                        * TRANSLATORS: make sure this matches "HEAD
+                        * detached from " in wt-status.c
+                        */
                        strbuf_addf(&desc, _("(HEAD detached from %s)"),
                                state.detached_from);
        }
@@ -1302,9 +1309,9 @@ static void populate_value(struct ref_array_item *ref)
        ref->value = xcalloc(used_atom_cnt, sizeof(struct atom_value));
 
        if (need_symref && (ref->flag & REF_ISSYMREF) && !ref->symref) {
-               unsigned char unused1[20];
+               struct object_id unused1;
                ref->symref = resolve_refdup(ref->refname, RESOLVE_REF_READING,
-                                            unused1, NULL);
+                                            unused1.hash, NULL);
                if (!ref->symref)
                        ref->symref = "";
        }
@@ -1470,10 +1477,23 @@ static void get_ref_atom_value(struct ref_array_item *ref, int atom, struct atom
        *v = &ref->value[atom];
 }
 
+/*
+ * Unknown has to be "0" here, because that's the default value for
+ * contains_cache slab entries that have not yet been assigned.
+ */
 enum contains_result {
-       CONTAINS_UNKNOWN = -1,
-       CONTAINS_NO = 0,
-       CONTAINS_YES = 1
+       CONTAINS_UNKNOWN = 0,
+       CONTAINS_NO,
+       CONTAINS_YES
+};
+
+define_commit_slab(contains_cache, enum contains_result);
+
+struct ref_filter_cbdata {
+       struct ref_array *array;
+       struct ref_filter *filter;
+       struct contains_cache contains_cache;
+       struct contains_cache no_contains_cache;
 };
 
 /*
@@ -1504,24 +1524,24 @@ static int in_commit_list(const struct commit_list *want, struct commit *c)
  * Do not recurse to find out, though, but return -1 if inconclusive.
  */
 static enum contains_result contains_test(struct commit *candidate,
-                           const struct commit_list *want)
+                                         const struct commit_list *want,
+                                         struct contains_cache *cache)
 {
-       /* was it previously marked as containing a want commit? */
-       if (candidate->object.flags & TMP_MARK)
-               return 1;
-       /* or marked as not possibly containing a want commit? */
-       if (candidate->object.flags & UNINTERESTING)
-               return 0;
+       enum contains_result *cached = contains_cache_at(cache, candidate);
+
+       /* If we already have the answer cached, return that. */
+       if (*cached)
+               return *cached;
+
        /* or are we it? */
        if (in_commit_list(want, candidate)) {
-               candidate->object.flags |= TMP_MARK;
-               return 1;
+               *cached = CONTAINS_YES;
+               return CONTAINS_YES;
        }
 
-       if (parse_commit(candidate) < 0)
-               return 0;
-
-       return -1;
+       /* Otherwise, we don't know; prepare to recurse */
+       parse_commit_or_die(candidate);
+       return CONTAINS_UNKNOWN;
 }
 
 static void push_to_contains_stack(struct commit *candidate, struct contains_stack *contains_stack)
@@ -1532,10 +1552,11 @@ static void push_to_contains_stack(struct commit *candidate, struct contains_sta
 }
 
 static enum contains_result contains_tag_algo(struct commit *candidate,
-               const struct commit_list *want)
+                                             const struct commit_list *want,
+                                             struct contains_cache *cache)
 {
        struct contains_stack contains_stack = { 0, 0, NULL };
-       int result = contains_test(candidate, want);
+       enum contains_result result = contains_test(candidate, want, cache);
 
        if (result != CONTAINS_UNKNOWN)
                return result;
@@ -1547,16 +1568,16 @@ static enum contains_result contains_tag_algo(struct commit *candidate,
                struct commit_list *parents = entry->parents;
 
                if (!parents) {
-                       commit->object.flags |= UNINTERESTING;
+                       *contains_cache_at(cache, commit) = CONTAINS_NO;
                        contains_stack.nr--;
                }
                /*
                 * If we just popped the stack, parents->item has been marked,
-                * therefore contains_test will return a meaningful 0 or 1.
+                * therefore contains_test will return a meaningful yes/no.
                 */
-               else switch (contains_test(parents->item, want)) {
+               else switch (contains_test(parents->item, want, cache)) {
                case CONTAINS_YES:
-                       commit->object.flags |= TMP_MARK;
+                       *contains_cache_at(cache, commit) = CONTAINS_YES;
                        contains_stack.nr--;
                        break;
                case CONTAINS_NO:
@@ -1568,14 +1589,15 @@ static enum contains_result contains_tag_algo(struct commit *candidate,
                }
        }
        free(contains_stack.contains_stack);
-       return contains_test(candidate, want);
+       return contains_test(candidate, want, cache);
 }
 
-static int commit_contains(struct ref_filter *filter, struct commit *commit)
+static int commit_contains(struct ref_filter *filter, struct commit *commit,
+                          struct commit_list *list, struct contains_cache *cache)
 {
        if (filter->with_commit_tag_algo)
-               return contains_tag_algo(commit, filter->with_commit);
-       return is_descendant_of(commit, filter->with_commit);
+               return contains_tag_algo(commit, list, cache) == CONTAINS_YES;
+       return is_descendant_of(commit, list);
 }
 
 /*
@@ -1662,22 +1684,22 @@ static int filter_pattern_match(struct ref_filter *filter, const char *refname)
  * the need to parse the object via parse_object(). peel_ref() might be a
  * more efficient alternative to obtain the pointee.
  */
-static const unsigned char *match_points_at(struct sha1_array *points_at,
-                                           const unsigned char *sha1,
-                                           const char *refname)
+static const struct object_id *match_points_at(struct oid_array *points_at,
+                                              const struct object_id *oid,
+                                              const char *refname)
 {
-       const unsigned char *tagged_sha1 = NULL;
+       const struct object_id *tagged_oid = NULL;
        struct object *obj;
 
-       if (sha1_array_lookup(points_at, sha1) >= 0)
-               return sha1;
-       obj = parse_object(sha1);
+       if (oid_array_lookup(points_at, oid) >= 0)
+               return oid;
+       obj = parse_object(oid->hash);
        if (!obj)
                die(_("malformed object at '%s'"), refname);
        if (obj->type == OBJ_TAG)
-               tagged_sha1 = ((struct tag *)obj)->tagged->oid.hash;
-       if (tagged_sha1 && sha1_array_lookup(points_at, tagged_sha1) >= 0)
-               return tagged_sha1;
+               tagged_oid = &((struct tag *)obj)->tagged->oid;
+       if (tagged_oid && oid_array_lookup(points_at, tagged_oid) >= 0)
+               return tagged_oid;
        return NULL;
 }
 
@@ -1694,7 +1716,7 @@ static struct ref_array_item *new_ref_array_item(const char *refname,
        return ref;
 }
 
-static int filter_ref_kind(struct ref_filter *filter, const char *refname)
+static int ref_kind_from_refname(const char *refname)
 {
        unsigned int i;
 
@@ -1707,11 +1729,7 @@ static int filter_ref_kind(struct ref_filter *filter, const char *refname)
                { "refs/tags/", FILTER_REFS_TAGS}
        };
 
-       if (filter->kind == FILTER_REFS_BRANCHES ||
-           filter->kind == FILTER_REFS_REMOTES ||
-           filter->kind == FILTER_REFS_TAGS)
-               return filter->kind;
-       else if (!strcmp(refname, "HEAD"))
+       if (!strcmp(refname, "HEAD"))
                return FILTER_REFS_DETACHED_HEAD;
 
        for (i = 0; i < ARRAY_SIZE(ref_kind); i++) {
@@ -1722,6 +1740,15 @@ static int filter_ref_kind(struct ref_filter *filter, const char *refname)
        return FILTER_REFS_OTHERS;
 }
 
+static int filter_ref_kind(struct ref_filter *filter, const char *refname)
+{
+       if (filter->kind == FILTER_REFS_BRANCHES ||
+           filter->kind == FILTER_REFS_REMOTES ||
+           filter->kind == FILTER_REFS_TAGS)
+               return filter->kind;
+       return ref_kind_from_refname(refname);
+}
+
 /*
  * A call-back given to for_each_ref().  Filter refs and keep them for
  * later object processing.
@@ -1752,7 +1779,7 @@ static int ref_filter_handler(const char *refname, const struct object_id *oid,
        if (!filter_pattern_match(filter, refname))
                return 0;
 
-       if (filter->points_at.nr && !match_points_at(&filter->points_at, oid->hash, refname))
+       if (filter->points_at.nr && !match_points_at(&filter->points_at, oid, refname))
                return 0;
 
        /*
@@ -1760,13 +1787,17 @@ static int ref_filter_handler(const char *refname, const struct object_id *oid,
         * obtain the commit using the 'oid' available and discard all
         * non-commits early. The actual filtering is done later.
         */
-       if (filter->merge_commit || filter->with_commit || filter->verbose) {
+       if (filter->merge_commit || filter->with_commit || filter->no_commit || filter->verbose) {
                commit = lookup_commit_reference_gently(oid->hash, 1);
                if (!commit)
                        return 0;
-               /* We perform the filtering for the '--contains' option */
+               /* We perform the filtering for the '--contains' option... */
                if (filter->with_commit &&
-                   !commit_contains(filter, commit))
+                   !commit_contains(filter, commit, filter->with_commit, &ref_cbdata->contains_cache))
+                       return 0;
+               /* ...or for the `--no-contains' option */
+               if (filter->no_commit &&
+                   commit_contains(filter, commit, filter->no_commit, &ref_cbdata->no_contains_cache))
                        return 0;
        }
 
@@ -1866,6 +1897,9 @@ int filter_refs(struct ref_array *array, struct ref_filter *filter, unsigned int
                broken = 1;
        filter->kind = type & FILTER_REFS_KIND_MASK;
 
+       init_contains_cache(&ref_cbdata.contains_cache);
+       init_contains_cache(&ref_cbdata.no_contains_cache);
+
        /*  Simple per-ref filtering */
        if (!filter->kind)
                die("filter_refs: invalid type");
@@ -1888,6 +1922,8 @@ int filter_refs(struct ref_array *array, struct ref_filter *filter, unsigned int
                        head_ref(ref_filter_handler, &ref_cbdata);
        }
 
+       clear_contains_cache(&ref_cbdata.contains_cache);
+       clear_contains_cache(&ref_cbdata.no_contains_cache);
 
        /*  Filters that need revision walking */
        if (filter->merge_commit)
@@ -1922,8 +1958,7 @@ static int cmp_ref_sorting(struct ref_sorting *s, struct ref_array_item *a, stru
        return (s->reverse) ? -cmp : cmp;
 }
 
-static struct ref_sorting *ref_sorting;
-static int compare_refs(const void *a_, const void *b_)
+static int compare_refs(const void *a_, const void *b_, void *ref_sorting)
 {
        struct ref_array_item *a = *((struct ref_array_item **)a_);
        struct ref_array_item *b = *((struct ref_array_item **)b_);
@@ -1939,8 +1974,7 @@ static int compare_refs(const void *a_, const void *b_)
 
 void ref_array_sort(struct ref_sorting *sorting, struct ref_array *array)
 {
-       ref_sorting = sorting;
-       QSORT(array->items, array->nr, compare_refs);
+       QSORT_S(array->items, array->nr, compare_refs, sorting);
 }
 
 static void append_literal(const char *cp, const char *ep, struct ref_formatting_state *state)
@@ -2012,6 +2046,16 @@ void show_ref_array_item(struct ref_array_item *info, const char *format, int qu
        putchar('\n');
 }
 
+void pretty_print_ref(const char *name, const unsigned char *sha1,
+               const char *format)
+{
+       struct ref_array_item *ref_item;
+       ref_item = new_ref_array_item(name, sha1, 0);
+       ref_item->kind = ref_kind_from_refname(name);
+       show_ref_array_item(ref_item, format, 0);
+       free_array_item(ref_item);
+}
+
 /*  If no sorting option is given, use refname to sort as default */
 struct ref_sorting *ref_default_sorting(void)
 {
@@ -2053,8 +2097,17 @@ int parse_opt_merge_filter(const struct option *opt, const char *arg, int unset)
 {
        struct ref_filter *rf = opt->value;
        unsigned char sha1[20];
+       int no_merged = starts_with(opt->long_name, "no");
+
+       if (rf->merge) {
+               if (no_merged) {
+                       return opterror(opt, "is incompatible with --merged", 0);
+               } else {
+                       return opterror(opt, "is incompatible with --no-merged", 0);
+               }
+       }
 
-       rf->merge = starts_with(opt->long_name, "no")
+       rf->merge = no_merged
                ? REF_FILTER_MERGED_OMIT
                : REF_FILTER_MERGED_INCLUDE;