X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=read-cache.c;h=525d138e90c524d08ef3d9755f1a2486c34adc39;hb=3e5970a41ec0809efb792357af546ffa96568f66;hp=2c03ec3069decb20f7557af4ac7dbe295f2dcf9c;hpb=373a273309433d66d56505f0a125434c57fa508d;p=git.git

diff --git a/read-cache.c b/read-cache.c
index 2c03ec306..525d138e9 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -1155,7 +1155,7 @@ int read_index_from(struct index_state *istate, const char *path)
 	size_t mmap_size;
 
 	errno = EBUSY;
-	if (istate->alloc)
+	if (istate->initialized)
 		return istate->cache_nr;
 
 	errno = ENOENT;
@@ -1195,6 +1195,7 @@ int read_index_from(struct index_state *istate, const char *path)
 	 * index size
 	 */
 	istate->alloc = xmalloc(estimate_cache_size(mmap_size, istate->cache_nr));
+	istate->initialized = 1;
 
 	src_offset = sizeof(*hdr);
 	dst_offset = 0;
@@ -1238,15 +1239,22 @@ unmap:
 	die("index file corrupt");
 }
 
+int is_index_unborn(struct index_state *istate)
+{
+	return (!istate->cache_nr && !istate->alloc && !istate->timestamp);
+}
+
 int discard_index(struct index_state *istate)
 {
 	istate->cache_nr = 0;
 	istate->cache_changed = 0;
 	istate->timestamp = 0;
+	istate->name_hash_initialized = 0;
 	free_hash(&istate->name_hash);
 	cache_tree_free(&(istate->cache_tree));
 	free(istate->alloc);
 	istate->alloc = NULL;
+	istate->initialized = 0;
 
 	/* no need to throw away allocated active_cache */
 	return 0;
@@ -1457,23 +1465,56 @@ int write_index(const struct index_state *istate, int newfd)
 int read_index_unmerged(struct index_state *istate)
 {
 	int i;
-	struct cache_entry **dst;
-	struct cache_entry *last = NULL;
+	int unmerged = 0;
 
 	read_index(istate);
-	dst = istate->cache;
 	for (i = 0; i < istate->cache_nr; i++) {
 		struct cache_entry *ce = istate->cache[i];
-		if (ce_stage(ce)) {
-			remove_name_hash(ce);
-			if (last && !strcmp(ce->name, last->name))
-				continue;
-			cache_tree_invalidate_path(istate->cache_tree, ce->name);
-			last = ce;
+		struct cache_entry *new_ce;
+		int size, len;
+
+		if (!ce_stage(ce))
 			continue;
-		}
-		*dst++ = ce;
+		unmerged = 1;
+		len = strlen(ce->name);
+		size = cache_entry_size(len);
+		new_ce = xcalloc(1, size);
+		hashcpy(new_ce->sha1, ce->sha1);
+		memcpy(new_ce->name, ce->name, len);
+		new_ce->ce_flags = create_ce_flags(len, 0);
+		new_ce->ce_mode = ce->ce_mode;
+		if (add_index_entry(istate, new_ce, 0))
+			return error("%s: cannot drop to stage #0",
+				     ce->name);
+		i = index_name_pos(istate, new_ce->name, len);
 	}
-	istate->cache_nr = dst - istate->cache;
-	return !!last;
+	return unmerged;
+}
+
+/*
+ * Returns 1 if the path is an "other" path with respect to
+ * the index; that is, the path is not mentioned in the index at all,
+ * either as a file, a directory with some files in the index,
+ * or as an unmerged entry.
+ *
+ * We helpfully remove a trailing "/" from directories so that
+ * the output of read_directory can be used as-is.
+ */
+int index_name_is_other(const struct index_state *istate, const char *name,
+		int namelen)
+{
+	int pos;
+	if (namelen && name[namelen - 1] == '/')
+		namelen--;
+	pos = index_name_pos(istate, name, namelen);
+	if (0 <= pos)
+		return 0;	/* exact match */
+	pos = -pos - 1;
+	if (pos < istate->cache_nr) {
+		struct cache_entry *ce = istate->cache[pos];
+		if (ce_namelen(ce) == namelen &&
+		    !memcmp(ce->name, name, namelen))
+			return 0; /* Yup, this one exists unmerged */
+	}
+	return 1;
 }