static void show_name(const struct object *obj,
const char *caller_name,
int always, int allow_undefined, int name_only)
{
const char *name;
const unsigned char *sha1 = obj->sha1;
if (!name_only)
printf("%s ", caller_name ? caller_name : sha1_to_hex(sha1));
name = get_rev_name(obj);
if (name)
printf("%s\n", name);
else if (allow_undefined)
printf("undefined\n");
else if (always)
printf("%s\n", find_unique_abbrev(sha1, DEFAULT_ABBREV));
else
die("cannot describe '%s'", sha1_to_hex(sha1));
}
static void name_rev_line(char *p, struct name_ref_data *data)
{
int forty = 0;
char *p_start;
for (p_start = p; *p; p++) {
#define ishex(x) (isdigit((x)) || ((x) >= 'a' && (x) <= 'f'))
if (!ishex(*p))
forty = 0;
else if (++forty == 40 &&
!ishex(*(p+1))) {
unsigned char sha1[40];
const char *name = NULL;
char c = *(p+1);
int p_len = p - p_start + 1;
forty = 0;
*(p+1) = 0;
if (!get_sha1(p - 39, sha1)) {
struct object *o =
lookup_object(sha1);
if (o)
name = get_rev_name(o);
}
*(p+1) = c;
if (!name)
continue;
if (data->name_only)
printf("%.*s%s", p_len - 40, p_start, name);
else
printf("%.*s (%s)", p_len, p_start, name);
p_start = p + 1;
}
}
/* flush */
if (p_start != p)
fwrite(p_start, p - p_start, 1, stdout);
}