Signed-off-by: Michael Haggerty <mhagger@xxxxxxxxxxxx>
---
cache.h | 13 +++++++++++++
replace_object.c | 7 +++++++
2 files changed, 20 insertions(+)
diff --git a/cache.h b/cache.h
index b039abc..9407560 100644
--- a/cache.h
+++ b/cache.h
@@ -798,13 +798,26 @@ static inline void *read_sha1_file(const unsigned char *sha1, enum object_type *
{
return read_sha1_file_extended(sha1, type, size, LOOKUP_REPLACE_OBJECT);
}
+
+/*
+ * This internal function is only declared here for the benefit of
+ * lookup_replace_object(). Please do not call it directly.
+ */
extern const unsigned char *do_lookup_replace_object(const unsigned char *sha1);
+
+/*
+ * If object sha1 should be replaced, return the replacement object's
+ * name (replaced recursively, if necessary). The return value is
+ * either sha1 or a pointer to a permanently-allocated value. When
+ * object replacement is suppressed, always return sha1.
+ */
static inline const unsigned char *lookup_replace_object(const unsigned char *sha1)
{
if (!check_replace_refs)
return sha1;
return do_lookup_replace_object(sha1);
}
+
static inline const unsigned char *lookup_replace_object_extended(const unsigned char *sha1, unsigned flag)
{
if (!(flag & LOOKUP_REPLACE_OBJECT))
diff --git a/replace_object.c b/replace_object.c
index c5cf9f4..31fabde 100644
--- a/replace_object.c
+++ b/replace_object.c
@@ -92,6 +92,13 @@ static void prepare_replace_object(void)
/* We allow "recursive" replacement. Only within reason, though */
#define MAXREPLACEDEPTH 5
+/*
+ * If a replacement for object sha1 has been set up, return the
+ * replacement object's name (replaced recursively, if necessary).
+ * The return value is either sha1 or a pointer to a
+ * permanently-allocated value. This function always respects replace
+ * references, regardless of the value of check_replace_refs.
+ */
const unsigned char *do_lookup_replace_object(const unsigned char *sha1)
{
int pos, depth = MAXREPLACEDEPTH;
--
1.8.5.3
--
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