Create new function verify_no_descendants, to hold one of the ref
conflict checks used in verify_refname_available. Multiple backends
will need this function, so it goes in the common code.
Signed-off-by: David Turner <dtur...@twopensource.com>
---
refs-be-files.c | 33 ++++++++-------------------------
refs.c | 22 ++++++++++++++++++++++
refs.h | 7 +++++++
3 files changed, 37 insertions(+), 25 deletions(-)
diff --git a/refs-be-files.c b/refs-be-files.c
index 8d1ffce..dd2c42e 100644
--- a/refs-be-files.c
+++ b/refs-be-files.c
@@ -730,6 +730,7 @@ static int verify_refname_available_dir(const char *refname,
struct strbuf *err)
{
const char *slash;
+ const char *extra_refname;
int pos;
struct strbuf dirname = STRBUF_INIT;
int ret = -1;
@@ -835,33 +836,15 @@ static int verify_refname_available_dir(const char
*refname,
}
}
- if (extras) {
- /*
- * Check for entries in extras that start with
- * "$refname/". We do that by looking for the place
- * where "$refname/" would be inserted in extras. If
- * there is an entry at that position that starts with
- * "$refname/" and is not in skip, then we have a
- * conflict.
- */
- for (pos = string_list_find_insert_index(extras, dirname.buf,
0);
- pos < extras->nr; pos++) {
- const char *extra_refname = extras->items[pos].string;
-
- if (!starts_with(extra_refname, dirname.buf))
- break;
-
- if (!skip || !string_list_has_string(skip,
extra_refname)) {
- strbuf_addf(err, "cannot process '%s' and '%s'
at the same time",
- refname, extra_refname);
- goto cleanup;
- }
- }
+ extra_refname = find_descendant_ref(dirname.buf, extras, skip);
+ if (extra_refname) {
+ strbuf_addf(err,
+ "cannot process '%s' and '%s' at the same time",
+ refname, extra_refname);
+ } else {
+ ret = 0;
}
- /* No conflicts were found */
- ret = 0;
-
cleanup:
strbuf_release(&dirname);
return ret;
diff --git a/refs.c b/refs.c
index 5a3125d..3ae0274 100644
--- a/refs.c
+++ b/refs.c
@@ -1101,6 +1101,28 @@ enum peel_status peel_object(const unsigned char *name,
unsigned char *sha1)
return PEEL_PEELED;
}
+const char *find_descendant_ref(const char *refname,
+ const struct string_list *extras,
+ const struct string_list *skip)
+{
+ int pos;
+ if (!extras)
+ return NULL;
+
+ /* Look for the place where "$refname/" would be inserted in extras. */
+ for (pos = string_list_find_insert_index(extras, refname, 0);
+ pos < extras->nr; pos++) {
+ const char *extra_refname = extras->items[pos].string;
+
+ if (!starts_with(extra_refname, refname))
+ break;
+
+ if (!skip || !string_list_has_string(skip, extra_refname))
+ return extra_refname;
+ }
+ return NULL;
+}
+
/* backend functions */
int refs_initdb(struct strbuf *err, int shared)
{
diff --git a/refs.h b/refs.h
index 3aad3b8..f8becea 100644
--- a/refs.h
+++ b/refs.h
@@ -637,6 +637,13 @@ int files_log_ref_write(const char *refname, const
unsigned char *old_sha1,
const unsigned char *new_sha1, const char *msg,
int flags, struct strbuf *err);
+/*
+ * Check for entries in extras that start with "$refname/", ignoring
+ * those in skip. If there is such an entry, then we have a conflict.
+ */
+const char *find_descendant_ref(const char *refname,
+ const struct string_list *extras,
+ const struct string_list *skip);
enum expire_reflog_flags {
EXPIRE_REFLOGS_DRY_RUN = 1 << 0,
--
2.4.2.644.g97b850b-twtrsrc
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