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-rw-r--r--replace_object.c120
1 files changed, 0 insertions, 120 deletions
diff --git a/replace_object.c b/replace_object.c
deleted file mode 100644
index 3e49965..0000000
--- a/replace_object.c
+++ /dev/null
@@ -1,120 +0,0 @@
-#include "cache.h"
-#include "sha1-lookup.h"
-#include "refs.h"
-#include "commit.h"
-
-/*
- * An array of replacements. The array is kept sorted by the original
- * sha1.
- */
-static struct replace_object {
- unsigned char original[20];
- unsigned char replacement[20];
-} **replace_object;
-
-static int replace_object_alloc, replace_object_nr;
-
-static const unsigned char *replace_sha1_access(size_t index, void *table)
-{
- struct replace_object **replace = table;
- return replace[index]->original;
-}
-
-static int replace_object_pos(const unsigned char *sha1)
-{
- return sha1_pos(sha1, replace_object, replace_object_nr,
- replace_sha1_access);
-}
-
-static int register_replace_object(struct replace_object *replace,
- int ignore_dups)
-{
- int pos = replace_object_pos(replace->original);
-
- if (0 <= pos) {
- if (ignore_dups)
- free(replace);
- else {
- free(replace_object[pos]);
- replace_object[pos] = replace;
- }
- return 1;
- }
- pos = -pos - 1;
- ALLOC_GROW(replace_object, replace_object_nr + 1, replace_object_alloc);
- replace_object_nr++;
- if (pos < replace_object_nr)
- MOVE_ARRAY(replace_object + pos + 1, replace_object + pos,
- replace_object_nr - pos - 1);
- replace_object[pos] = replace;
- return 0;
-}
-
-static int register_replace_ref(const char *refname,
- const struct object_id *oid,
- int flag, void *cb_data)
-{
- /* Get sha1 from refname */
- const char *slash = strrchr(refname, '/');
- const char *hash = slash ? slash + 1 : refname;
- struct replace_object *repl_obj = xmalloc(sizeof(*repl_obj));
-
- if (strlen(hash) != 40 || get_sha1_hex(hash, repl_obj->original)) {
- free(repl_obj);
- warning("bad replace ref name: %s", refname);
- return 0;
- }
-
- /* Copy sha1 from the read ref */
- hashcpy(repl_obj->replacement, oid->hash);
-
- /* Register new object */
- if (register_replace_object(repl_obj, 1))
- die("duplicate replace ref: %s", refname);
-
- return 0;
-}
-
-static void prepare_replace_object(void)
-{
- static int replace_object_prepared;
-
- if (replace_object_prepared)
- return;
-
- for_each_replace_ref(register_replace_ref, NULL);
- replace_object_prepared = 1;
- if (!replace_object_nr)
- check_replace_refs = 0;
-}
-
-/* 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;
- const unsigned char *cur = sha1;
-
- prepare_replace_object();
-
- /* Try to recursively replace the object */
- do {
- if (--depth < 0)
- die("replace depth too high for object %s",
- sha1_to_hex(sha1));
-
- pos = replace_object_pos(cur);
- if (0 <= pos)
- cur = replace_object[pos]->replacement;
- } while (0 <= pos);
-
- return cur;
-}