Add strbuf_check_tag_ref() as helper to check a refname for a tag.
Signed-off-by: Michael Schubert <mschub@xxxxxxxxxxxxx>
---
builtin/tag.c | 30 ++++++++++++++++++++++--------
1 files changed, 22 insertions(+), 8 deletions(-)
diff --git a/builtin/tag.c b/builtin/tag.c
index b66b34a..f087a7f 100644
--- a/builtin/tag.c
+++ b/builtin/tag.c
@@ -352,11 +352,26 @@ static int parse_msg_arg(const struct option *opt, const char *arg, int unset)
return 0;
}
+static int strbuf_check_tag_ref(struct strbuf *sb, const char *name)
+{
+ if (name[0] == '-')
+ return CHECK_REF_FORMAT_ERROR;
+
+ strbuf_reset(sb);
+ strbuf_add(sb, "refs/tags/", 10);
+ strbuf_add(sb, name, strlen(name));
+
+ if (sb->len > PATH_MAX)
+ die(_("tag name too long: %.*s..."), 50, name);
+
+ return check_ref_format(sb->buf);
+}
+
int cmd_tag(int argc, const char **argv, const char *prefix)
{
struct strbuf buf = STRBUF_INIT;
+ struct strbuf ref = STRBUF_INIT;
unsigned char object[20], prev[20];
- char ref[PATH_MAX];
const char *object_ref, *tag;
struct ref_lock *lock;
@@ -452,12 +467,10 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
if (get_sha1(object_ref, object))
die(_("Failed to resolve '%s' as a valid ref."), object_ref);
- if (snprintf(ref, sizeof(ref), "refs/tags/%s", tag) > sizeof(ref) - 1)
- die(_("tag name too long: %.*s..."), 50, tag);
- if (check_ref_format(ref))
+ if (strbuf_check_tag_ref(&ref, tag))
die(_("'%s' is not a valid tag name."), tag);
- if (!resolve_ref(ref, prev, 1, NULL))
+ if (!resolve_ref(ref.buf, prev, 1, NULL))
hashclr(prev);
else if (!force)
die(_("tag '%s' already exists"), tag);
@@ -466,14 +479,15 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
create_tag(object, tag, &buf, msg.given || msgfile,
sign, prev, object);
- lock = lock_any_ref_for_update(ref, prev, 0);
+ lock = lock_any_ref_for_update(ref.buf, prev, 0);
if (!lock)
- die(_("%s: cannot lock the ref"), ref);
+ die(_("%s: cannot lock the ref"), ref.buf);
if (write_ref_sha1(lock, object, NULL) < 0)
- die(_("%s: cannot update the ref"), ref);
+ die(_("%s: cannot update the ref"), ref.buf);
if (force && hashcmp(prev, object))
printf(_("Updated tag '%s' (was %s)\n"), tag, find_unique_abbrev(prev, DEFAULT_ABBREV));
strbuf_release(&buf);
+ strbuf_release(&ref);
return 0;
}
--
1.7.5.1
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