pretty: allow %(trailers) options with explicit value
[gitweb.git] / ref-filter.c
index ccca317ce12aaeaa4d94689229242d454f2cbebf..0c45ed9d94a4bd4bfab6c9d441ca9bc7de7ebf31 100644 (file)
@@ -19,6 +19,7 @@
 #include "wt-status.h"
 #include "commit-slab.h"
 #include "commit-graph.h"
+#include "commit-reach.h"
 
 static struct ref_msg {
        const char *gone;
@@ -263,6 +264,8 @@ static int trailers_atom_parser(const struct ref_format *format, struct used_ato
        struct string_list params = STRING_LIST_INIT_DUP;
        int i;
 
+       atom->u.contents.trailer_opts.no_divider = 1;
+
        if (arg) {
                string_list_split(&params, arg, ',', -1);
                for (i = 0; i < params.nr; i++) {
@@ -872,7 +875,7 @@ static void grab_common_values(struct atom_value *val, int deref, struct expand_
                if (deref)
                        name++;
                if (!strcmp(name, "objecttype"))
-                       v->s = type_name(oi->type);
+                       v->s = xstrdup(type_name(oi->type));
                else if (!strcmp(name, "objectsize")) {
                        v->value = oi->size;
                        v->s = xstrfmt("%lu", oi->size);
@@ -896,9 +899,9 @@ static void grab_tag_values(struct atom_value *val, int deref, struct object *ob
                if (deref)
                        name++;
                if (!strcmp(name, "tag"))
-                       v->s = tag->tag;
+                       v->s = xstrdup(tag->tag);
                else if (!strcmp(name, "type") && tag->tagged)
-                       v->s = type_name(tag->tagged->type);
+                       v->s = xstrdup(type_name(tag->tagged->type));
                else if (!strcmp(name, "object") && tag->tagged)
                        v->s = xstrdup(oid_to_hex(&tag->tagged->oid));
        }
@@ -1029,7 +1032,7 @@ static void grab_date(const char *buf, struct atom_value *v, const char *atomnam
        v->value = timestamp;
        return;
  bad:
-       v->s = "";
+       v->s = xstrdup("");
        v->value = 0;
 }
 
@@ -1224,7 +1227,7 @@ static void fill_missing_values(struct atom_value *val)
        for (i = 0; i < used_atom_cnt; i++) {
                struct atom_value *v = &val[i];
                if (v->s == NULL)
-                       v->s = "";
+                       v->s = xstrdup("");
        }
 }
 
@@ -1270,7 +1273,8 @@ static inline char *copy_advance(char *dst, const char *src)
 static const char *lstrip_ref_components(const char *refname, int len)
 {
        long remaining = len;
-       const char *start = refname;
+       const char *start = xstrdup(refname);
+       const char *to_free = start;
 
        if (len < 0) {
                int i;
@@ -1291,20 +1295,24 @@ static const char *lstrip_ref_components(const char *refname, int len)
        while (remaining > 0) {
                switch (*start++) {
                case '\0':
-                       return "";
+                       free((char *)to_free);
+                       return xstrdup("");
                case '/':
                        remaining--;
                        break;
                }
        }
 
+       start = xstrdup(start);
+       free((char *)to_free);
        return start;
 }
 
 static const char *rstrip_ref_components(const char *refname, int len)
 {
        long remaining = len;
-       char *start = xstrdup(refname);
+       const char *start = xstrdup(refname);
+       const char *to_free = start;
 
        if (len < 0) {
                int i;
@@ -1324,9 +1332,10 @@ static const char *rstrip_ref_components(const char *refname, int len)
 
        while (remaining-- > 0) {
                char *p = strrchr(start, '/');
-               if (p == NULL)
-                       return "";
-               else
+               if (p == NULL) {
+                       free((char *)to_free);
+                       return xstrdup("");
+               } else
                        p[0] = '\0';
        }
        return start;
@@ -1341,7 +1350,7 @@ static const char *show_ref(struct refname_atom *atom, const char *refname)
        else if (atom->option == R_RSTRIP)
                return rstrip_ref_components(refname, atom->rstrip);
        else
-               return refname;
+               return xstrdup(refname);
 }
 
 static void fill_remote_ref_details(struct used_atom *atom, const char *refname,
@@ -1355,7 +1364,7 @@ static void fill_remote_ref_details(struct used_atom *atom, const char *refname,
                                       NULL, AHEAD_BEHIND_FULL) < 0) {
                        *s = xstrdup(msgs.gone);
                } else if (!num_ours && !num_theirs)
-                       *s = "";
+                       *s = xstrdup("");
                else if (!num_ours)
                        *s = xstrfmt(msgs.behind, num_theirs);
                else if (!num_theirs)
@@ -1370,36 +1379,31 @@ static void fill_remote_ref_details(struct used_atom *atom, const char *refname,
                }
        } else if (atom->u.remote_ref.option == RR_TRACKSHORT) {
                if (stat_tracking_info(branch, &num_ours, &num_theirs,
-                                      NULL, AHEAD_BEHIND_FULL) < 0)
+                                      NULL, AHEAD_BEHIND_FULL) < 0) {
+                       *s = xstrdup("");
                        return;
-
+               }
                if (!num_ours && !num_theirs)
-                       *s = "=";
+                       *s = xstrdup("=");
                else if (!num_ours)
-                       *s = "<";
+                       *s = xstrdup("<");
                else if (!num_theirs)
-                       *s = ">";
+                       *s = xstrdup(">");
                else
-                       *s = "<>";
+                       *s = xstrdup("<>");
        } else if (atom->u.remote_ref.option == RR_REMOTE_NAME) {
                int explicit;
                const char *remote = atom->u.remote_ref.push ?
                        pushremote_for_branch(branch, &explicit) :
                        remote_for_branch(branch, &explicit);
-               if (explicit)
-                       *s = xstrdup(remote);
-               else
-                       *s = "";
+               *s = xstrdup(explicit ? remote : "");
        } else if (atom->u.remote_ref.option == RR_REMOTE_REF) {
                int explicit;
                const char *merge;
 
                merge = remote_ref_for_branch(branch, atom->u.remote_ref.push,
                                              &explicit);
-               if (explicit)
-                       *s = xstrdup(merge);
-               else
-                       *s = "";
+               *s = xstrdup(explicit ? merge : "");
        } else
                BUG("unhandled RR_* enum");
 }
@@ -1448,7 +1452,7 @@ char *get_head_description(void)
 static const char *get_symref(struct used_atom *atom, struct ref_array_item *ref)
 {
        if (!ref->symref)
-               return "";
+               return xstrdup("");
        else
                return show_ref(&atom->u.refname, ref->symref);
 }
@@ -1507,7 +1511,7 @@ static int populate_value(struct ref_array_item *ref, struct strbuf *err)
                ref->symref = resolve_refdup(ref->refname, RESOLVE_REF_READING,
                                             NULL, NULL);
                if (!ref->symref)
-                       ref->symref = "";
+                       ref->symref = xstrdup("");
        }
 
        /* Fill in specials first */
@@ -1533,20 +1537,23 @@ static int populate_value(struct ref_array_item *ref, struct strbuf *err)
                        refname = get_symref(atom, ref);
                else if (starts_with(name, "upstream")) {
                        const char *branch_name;
-                       v->s = "";
                        /* only local branches may have an upstream */
                        if (!skip_prefix(ref->refname, "refs/heads/",
-                                        &branch_name))
+                                        &branch_name)) {
+                               v->s = xstrdup("");
                                continue;
+                       }
                        branch = branch_get(branch_name);
 
                        refname = branch_get_upstream(branch, NULL);
                        if (refname)
                                fill_remote_ref_details(atom, refname, branch, &v->s);
+                       else
+                               v->s = xstrdup("");
                        continue;
                } else if (atom->u.remote_ref.push) {
                        const char *branch_name;
-                       v->s = "";
+                       v->s = xstrdup("");
                        if (!skip_prefix(ref->refname, "refs/heads/",
                                         &branch_name))
                                continue;
@@ -1559,10 +1566,12 @@ static int populate_value(struct ref_array_item *ref, struct strbuf *err)
                                if (!refname)
                                        continue;
                        }
+                       /* We will definitely re-init v->s on the next line. */
+                       free((char *)v->s);
                        fill_remote_ref_details(atom, refname, branch, &v->s);
                        continue;
                } else if (starts_with(name, "color:")) {
-                       v->s = atom->u.color;
+                       v->s = xstrdup(atom->u.color);
                        continue;
                } else if (!strcmp(name, "flag")) {
                        char buf[256], *cp = buf;
@@ -1571,7 +1580,7 @@ static int populate_value(struct ref_array_item *ref, struct strbuf *err)
                        if (ref->flag & REF_ISPACKED)
                                cp = copy_advance(cp, ",packed");
                        if (cp == buf)
-                               v->s = "";
+                               v->s = xstrdup("");
                        else {
                                *cp = '\0';
                                v->s = xstrdup(buf + 1);
@@ -1581,40 +1590,42 @@ static int populate_value(struct ref_array_item *ref, struct strbuf *err)
                        continue;
                } else if (!strcmp(name, "HEAD")) {
                        if (atom->u.head && !strcmp(ref->refname, atom->u.head))
-                               v->s = "*";
+                               v->s = xstrdup("*");
                        else
-                               v->s = " ";
+                               v->s = xstrdup(" ");
                        continue;
                } else if (starts_with(name, "align")) {
                        v->handler = align_atom_handler;
-                       v->s = "";
+                       v->s = xstrdup("");
                        continue;
                } else if (!strcmp(name, "end")) {
                        v->handler = end_atom_handler;
-                       v->s = "";
+                       v->s = xstrdup("");
                        continue;
                } else if (starts_with(name, "if")) {
                        const char *s;
-                       v->s = "";
                        if (skip_prefix(name, "if:", &s))
                                v->s = xstrdup(s);
+                       else
+                               v->s = xstrdup("");
                        v->handler = if_atom_handler;
                        continue;
                } else if (!strcmp(name, "then")) {
                        v->handler = then_atom_handler;
-                       v->s = "";
+                       v->s = xstrdup("");
                        continue;
                } else if (!strcmp(name, "else")) {
                        v->handler = else_atom_handler;
-                       v->s = "";
+                       v->s = xstrdup("");
                        continue;
                } else
                        continue;
 
                if (!deref)
-                       v->s = refname;
+                       v->s = xstrdup(refname);
                else
                        v->s = xstrfmt("%s^{}", refname);
+               free((char *)refname);
        }
 
        for (i = 0; i < used_atom_cnt; i++) {
@@ -1673,144 +1684,6 @@ static int get_ref_atom_value(struct ref_array_item *ref, int atom,
        return 0;
 }
 
-/*
- * 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 = 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;
-};
-
-/*
- * Mimicking the real stack, this stack lives on the heap, avoiding stack
- * overflows.
- *
- * At each recursion step, the stack items points to the commits whose
- * ancestors are to be inspected.
- */
-struct contains_stack {
-       int nr, alloc;
-       struct contains_stack_entry {
-               struct commit *commit;
-               struct commit_list *parents;
-       } *contains_stack;
-};
-
-static int in_commit_list(const struct commit_list *want, struct commit *c)
-{
-       for (; want; want = want->next)
-               if (oideq(&want->item->object.oid, &c->object.oid))
-                       return 1;
-       return 0;
-}
-
-/*
- * Test whether the candidate is contained in the list.
- * 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,
-                                         struct contains_cache *cache,
-                                         uint32_t cutoff)
-{
-       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)) {
-               *cached = CONTAINS_YES;
-               return CONTAINS_YES;
-       }
-
-       /* Otherwise, we don't know; prepare to recurse */
-       parse_commit_or_die(candidate);
-
-       if (candidate->generation < cutoff)
-               return CONTAINS_NO;
-
-       return CONTAINS_UNKNOWN;
-}
-
-static void push_to_contains_stack(struct commit *candidate, struct contains_stack *contains_stack)
-{
-       ALLOC_GROW(contains_stack->contains_stack, contains_stack->nr + 1, contains_stack->alloc);
-       contains_stack->contains_stack[contains_stack->nr].commit = candidate;
-       contains_stack->contains_stack[contains_stack->nr++].parents = candidate->parents;
-}
-
-static enum contains_result contains_tag_algo(struct commit *candidate,
-                                             const struct commit_list *want,
-                                             struct contains_cache *cache)
-{
-       struct contains_stack contains_stack = { 0, 0, NULL };
-       enum contains_result result;
-       uint32_t cutoff = GENERATION_NUMBER_INFINITY;
-       const struct commit_list *p;
-
-       for (p = want; p; p = p->next) {
-               struct commit *c = p->item;
-               load_commit_graph_info(the_repository, c);
-               if (c->generation < cutoff)
-                       cutoff = c->generation;
-       }
-
-       result = contains_test(candidate, want, cache, cutoff);
-       if (result != CONTAINS_UNKNOWN)
-               return result;
-
-       push_to_contains_stack(candidate, &contains_stack);
-       while (contains_stack.nr) {
-               struct contains_stack_entry *entry = &contains_stack.contains_stack[contains_stack.nr - 1];
-               struct commit *commit = entry->commit;
-               struct commit_list *parents = entry->parents;
-
-               if (!parents) {
-                       *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 yes/no.
-                */
-               else switch (contains_test(parents->item, want, cache, cutoff)) {
-               case CONTAINS_YES:
-                       *contains_cache_at(cache, commit) = CONTAINS_YES;
-                       contains_stack.nr--;
-                       break;
-               case CONTAINS_NO:
-                       entry->parents = parents->next;
-                       break;
-               case CONTAINS_UNKNOWN:
-                       push_to_contains_stack(parents->item, &contains_stack);
-                       break;
-               }
-       }
-       free(contains_stack.contains_stack);
-       return contains_test(candidate, want, cache, cutoff);
-}
-
-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, list, cache) == CONTAINS_YES;
-       return is_descendant_of(commit, list);
-}
-
 /*
  * Return 1 if the refname matches one of the patterns, otherwise 0.
  * A pattern can be a literal prefix (e.g. a refname "refs/heads/master"
@@ -2046,6 +1919,13 @@ static int filter_ref_kind(struct ref_filter *filter, const char *refname)
        return ref_kind_from_refname(refname);
 }
 
+struct ref_filter_cbdata {
+       struct ref_array *array;
+       struct ref_filter *filter;
+       struct contains_cache contains_cache;
+       struct contains_cache no_contains_cache;
+};
+
 /*
  * A call-back given to for_each_ref().  Filter refs and keep them for
  * later object processing.
@@ -2116,6 +1996,10 @@ static int ref_filter_handler(const char *refname, const struct object_id *oid,
 static void free_array_item(struct ref_array_item *item)
 {
        free((char *)item->symref);
+       if (item->value) {
+               free((char *)item->value->s);
+               free(item->value);
+       }
        free(item);
 }
 
@@ -2124,6 +2008,10 @@ void ref_array_clear(struct ref_array *array)
 {
        int i;
 
+       for (i = 0; i < used_atom_cnt; i++)
+               free((char *)used_atom[i].name);
+       FREE_AND_NULL(used_atom);
+       used_atom_cnt = 0;
        for (i = 0; i < array->nr; i++)
                free_array_item(array->items[i]);
        FREE_AND_NULL(array->items);
@@ -2138,7 +2026,7 @@ static void do_merge_filter(struct ref_filter_cbdata *ref_cbdata)
        struct ref_array *array = ref_cbdata->array;
        struct commit **to_clear = xcalloc(sizeof(struct commit *), array->nr);
 
-       init_revisions(&revs, NULL);
+       repo_init_revisions(the_repository, &revs, NULL);
 
        for (i = 0; i < array->nr; i++) {
                struct ref_array_item *item = array->items[i];