log-tree: convert to struct object_id

Convert the remaining functions to take pointers to struct object_id
instead of pointers to unsigned char, and update the internals of these
functions as well.  Among these functions is a caller of lookup_tag,
which we will convert shortly.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/log-tree.c b/log-tree.c
index 7fb1a85d2de3f0369829957f0aeb3382667c6482..169fd039fd31e79dbcb56bf96c30eb60d628dd09 100644 (file)
--- a/log-tree.c
+++ b/log-tree.c
@@ -184,7 +184,7 @@ static const struct name_decoration *current_pointed_by_HEAD(const struct name_d
 {
        const struct name_decoration *list, *head = NULL;
        const char *branch_name = NULL;
-       unsigned char unused[20];
+       struct object_id unused;
        int rru_flags;
 
        /* First find HEAD */
@@ -197,7 +197,7 @@ static const struct name_decoration *current_pointed_by_HEAD(const struct name_d
                return NULL;
 
        /* Now resolve and find the matching current branch */
-       branch_name = resolve_ref_unsafe("HEAD", 0, unused, &rru_flags);
+       branch_name = resolve_ref_unsafe("HEAD", 0, unused.hash, &rru_flags);
        if (!(rru_flags & REF_ISSYMREF))
                return NULL;
 
@@ -456,13 +456,13 @@ static void show_signature(struct rev_info *opt, struct commit *commit)
        strbuf_release(&signature);
 }
 
-static int which_parent(const unsigned char *sha1, const struct commit *commit)
+static int which_parent(const struct object_id *oid, const struct commit *commit)
 {
        int nth;
        const struct commit_list *parent;
 
        for (nth = 0, parent = commit->parents; parent; parent = parent->next) {
-               if (!hashcmp(parent->item->object.oid.hash, sha1))
+               if (!oidcmp(&parent->item->object.oid, oid))
                        return nth;
                nth++;
        }
@@ -481,14 +481,14 @@ static void show_one_mergetag(struct commit *commit,
                              void *data)
 {
        struct rev_info *opt = (struct rev_info *)data;
-       unsigned char sha1[20];
+       struct object_id oid;
        struct tag *tag;
        struct strbuf verify_message;
        int status, nth;
        size_t payload_size, gpg_message_offset;
 
-       hash_sha1_file(extra->value, extra->len, typename(OBJ_TAG), sha1);
-       tag = lookup_tag(sha1);
+       hash_sha1_file(extra->value, extra->len, typename(OBJ_TAG), oid.hash);
+       tag = lookup_tag(oid.hash);
        if (!tag)
                return; /* error message already given */
 
@@ -500,7 +500,7 @@ static void show_one_mergetag(struct commit *commit,
                          &commit->parents->next->item->object.oid))
                strbuf_addf(&verify_message,
                            "merged tag '%s'\n", tag->tag);
-       else if ((nth = which_parent(tag->tagged->oid.hash, commit)) < 0)
+       else if ((nth = which_parent(&tag->tagged->oid, commit)) < 0)
                strbuf_addf(&verify_message, "tag %s names a non-parent %s\n",
                                    tag->tag, tag->tagged->oid.hash);
        else
@@ -536,7 +536,7 @@ void show_log(struct rev_info *opt)
        struct strbuf msgbuf = STRBUF_INIT;
        struct log_info *log = opt->loginfo;
        struct commit *commit = log->commit, *parent = log->parent;
-       int abbrev_commit = opt->abbrev_commit ? opt->abbrev : 40;
+       int abbrev_commit = opt->abbrev_commit ? opt->abbrev : GIT_SHA1_HEXSZ;
        const char *extra_headers = opt->extra_headers;
        struct pretty_print_context ctx = {0};