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Diffstat (limited to 'builtin-name-rev.c')
-rw-r--r--builtin-name-rev.c57
1 files changed, 36 insertions, 21 deletions
diff --git a/builtin-name-rev.c b/builtin-name-rev.c
index a0c89a827b..384da4db13 100644
--- a/builtin-name-rev.c
+++ b/builtin-name-rev.c
@@ -125,18 +125,18 @@ static int name_ref(const char *path, const unsigned char *sha1, int flags, void
}
/* returns a static buffer */
-static const char* get_rev_name(struct object *o)
+static const char *get_rev_name(const struct object *o)
{
static char buffer[1024];
struct rev_name *n;
struct commit *c;
if (o->type != OBJ_COMMIT)
- return "undefined";
+ return NULL;
c = (struct commit *) o;
n = c->util;
if (!n)
- return "undefined";
+ return NULL;
if (!n->generation)
return n->tip_name;
@@ -151,6 +151,26 @@ static const char* get_rev_name(struct object *o)
}
}
+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 char const * const name_rev_usage[] = {
"git-name-rev [options] ( --all | --stdin | <commit>... )",
NULL
@@ -159,7 +179,7 @@ static char const * const name_rev_usage[] = {
int cmd_name_rev(int argc, const char **argv, const char *prefix)
{
struct object_array revs = { 0, 0, NULL };
- int all = 0, transform_stdin = 0;
+ int all = 0, transform_stdin = 0, allow_undefined = 1, always = 0;
struct name_ref_data data = { 0, 0, NULL };
struct option opts[] = {
OPT_BOOLEAN(0, "name-only", &data.name_only, "print only names (no SHA-1)"),
@@ -169,6 +189,9 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
OPT_GROUP(""),
OPT_BOOLEAN(0, "all", &all, "list all commits reachable from all refs"),
OPT_BOOLEAN(0, "stdin", &transform_stdin, "read from stdin"),
+ OPT_BOOLEAN(0, "undefined", &allow_undefined, "allow to print `undefined` names"),
+ OPT_BOOLEAN(0, "always", &always,
+ "show abbreviated commit object as fallback"),
OPT_END(),
};
@@ -226,7 +249,7 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
else if (++forty == 40 &&
!ishex(*(p+1))) {
unsigned char sha1[40];
- const char *name = "undefined";
+ const char *name = NULL;
char c = *(p+1);
forty = 0;
@@ -240,11 +263,10 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
}
*(p+1) = c;
- if (!strcmp(name, "undefined"))
+ if (!name)
continue;
- fwrite(p_start, p - p_start + 1, 1,
- stdout);
+ fwrite(p_start, p - p_start + 1, 1, stdout);
printf(" (%s)", name);
p_start = p + 1;
}
@@ -258,21 +280,14 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
int i, max;
max = get_max_object_index();
- for (i = 0; i < max; i++) {
- struct object * obj = get_indexed_object(i);
- if (!obj)
- continue;
- if (!data.name_only)
- printf("%s ", sha1_to_hex(obj->sha1));
- printf("%s\n", get_rev_name(obj));
- }
+ for (i = 0; i < max; i++)
+ show_name(get_indexed_object(i), NULL,
+ always, allow_undefined, data.name_only);
} else {
int i;
- for (i = 0; i < revs.nr; i++) {
- if (!data.name_only)
- printf("%s ", revs.objects[i].name);
- printf("%s\n", get_rev_name(revs.objects[i].item));
- }
+ for (i = 0; i < revs.nr; i++)
+ show_name(revs.objects[i].item, revs.objects[i].name,
+ always, allow_undefined, data.name_only);
}
return 0;