cat-file: split batch "buf" into two variables

diff --git a/builtin/show-branch.c b/builtin/show-branch.c
index 6c2148b71db593af1a4ef8d2d1bdbdfe16661851..4b9d3c0059bb866a699ce7060fef1047e9019e3b 100644 (file)
--- a/builtin/show-branch.c
+++ b/builtin/show-branch.c
@@ -7,6 +7,7 @@
 #include "argv-array.h"
 #include "parse-options.h"
 #include "dir.h"
+#include "commit-slab.h"
 
 static const char* show_branch_usage[] = {
     N_("git show-branch [-a | --all] [-r | --remotes] [--topo-order | --date-order]\n"
@@ -21,6 +22,11 @@ static int showbranch_use_color = -1;
 
 static struct argv_array default_args = ARGV_ARRAY_INIT;
 
+/*
+ * TODO: convert this use of commit->object.flags to commit-slab
+ * instead to store a pointer to ref name directly. Then use the same
+ * UNINTERESTING definition from revision.h here.
+ */
 #define UNINTERESTING  01
 
 #define REV_SHIFT       2
@@ -59,15 +65,27 @@ struct commit_name {
        int generation; /* how many parents away from head_name */
 };
 
+define_commit_slab(commit_name_slab, struct commit_name *);
+static struct commit_name_slab name_slab;
+
+static struct commit_name *commit_to_name(struct commit *commit)
+{
+       return *commit_name_slab_at(&name_slab, commit);
+}
+
+
 /* Name the commit as nth generation ancestor of head_name;
  * we count only the first-parent relationship for naming purposes.
  */
 static void name_commit(struct commit *commit, const char *head_name, int nth)
 {
        struct commit_name *name;
-       if (!commit->util)
-               commit->util = xmalloc(sizeof(struct commit_name));
-       name = commit->util;
+
+       name = *commit_name_slab_at(&name_slab, commit);
+       if (!name) {
+               name = xmalloc(sizeof(*name));
+               *commit_name_slab_at(&name_slab, commit) = name;
+       }
        name->head_name = head_name;
        name->generation = nth;
 }
@@ -79,8 +97,8 @@ static void name_commit(struct commit *commit, const char *head_name, int nth)
  */
 static void name_parent(struct commit *commit, struct commit *parent)
 {
-       struct commit_name *commit_name = commit->util;
-       struct commit_name *parent_name = parent->util;
+       struct commit_name *commit_name = commit_to_name(commit);
+       struct commit_name *parent_name = commit_to_name(parent);
        if (!commit_name)
                return;
        if (!parent_name ||
@@ -94,12 +112,12 @@ static int name_first_parent_chain(struct commit *c)
        int i = 0;
        while (c) {
                struct commit *p;
-               if (!c->util)
+               if (!commit_to_name(c))
                        break;
                if (!c->parents)
                        break;
                p = c->parents->item;
-               if (!p->util) {
+               if (!commit_to_name(p)) {
                        name_parent(c, p);
                        i++;
                }
@@ -122,7 +140,7 @@ static void name_commits(struct commit_list *list,
        /* First give names to the given heads */
        for (cl = list; cl; cl = cl->next) {
                c = cl->item;
-               if (c->util)
+               if (commit_to_name(c))
                        continue;
                for (i = 0; i < num_rev; i++) {
                        if (rev[i] == c) {
@@ -148,9 +166,9 @@ static void name_commits(struct commit_list *list,
                        struct commit_name *n;
                        int nth;
                        c = cl->item;
-                       if (!c->util)
+                       if (!commit_to_name(c))
                                continue;
-                       n = c->util;
+                       n = commit_to_name(c);
                        parents = c->parents;
                        nth = 0;
                        while (parents) {
@@ -158,7 +176,7 @@ static void name_commits(struct commit_list *list,
                                struct strbuf newname = STRBUF_INIT;
                                parents = parents->next;
                                nth++;
-                               if (p->util)
+                               if (commit_to_name(p))
                                        continue;
                                switch (n->generation) {
                                case 0:
@@ -271,7 +289,7 @@ static void show_one_commit(struct commit *commit, int no_name)
 {
        struct strbuf pretty = STRBUF_INIT;
        const char *pretty_str = "(unavailable)";
-       struct commit_name *name = commit->util;
+       struct commit_name *name = commit_to_name(commit);
 
        if (commit->object.parsed) {
                pp_commit_easy(CMIT_FMT_ONELINE, commit, &pretty);
@@ -360,7 +378,8 @@ static void sort_ref_range(int bottom, int top)
 static int append_ref(const char *refname, const struct object_id *oid,
                      int allow_dups)
 {
-       struct commit *commit = lookup_commit_reference_gently(oid, 1);
+       struct commit *commit = lookup_commit_reference_gently(the_repository,
+                                                              oid, 1);
        int i;
 
        if (!commit)
@@ -660,6 +679,8 @@ int cmd_show_branch(int ac, const char **av, const char *prefix)
                OPT_END()
        };
 
+       init_commit_name_slab(&name_slab);
+
        git_config(git_show_branch_config, NULL);
 
        /* If nothing is specified, try the default first */
@@ -810,7 +831,7 @@ int cmd_show_branch(int ac, const char **av, const char *prefix)
                               MAX_REVS), MAX_REVS);
                if (get_oid(ref_name[num_rev], &revkey))
                        die(_("'%s' is not a valid ref."), ref_name[num_rev]);
-               commit = lookup_commit_reference(&revkey);
+               commit = lookup_commit_reference(the_repository, &revkey);
                if (!commit)
                        die(_("cannot find commit %s (%s)"),
                            ref_name[num_rev], oid_to_hex(&revkey));