1 files changed, 56 insertions, 0 deletions
diff --git a/opkg-opk/dirent.c b/opkg-opk/dirent.c
index 0080d44..9d27cfd 100644
--- a/opkg-opk/dirent.c
+++ b/opkg-opk/dirent.c
@@ -115,3 +115,59 @@ opkg_opk_dirent_name_prefix(struct opkg_opk_dirent *dirent, int is_dir,
 
 	return OPKG_OPK_OK;
 }
+
+static char *
+_opkg_opk_dirent_name_alloc(struct opkg_opk_dirent *dirent, int is_dir,
+		char **cur, size_t *buf_len)
+{
+	size_t  len;
+	int     sep;
+	char   *buf;
+
+	len = strlen(dirent->name);
+	if (*buf_len > 1 /* 1 for NUL */ || is_dir) {
+		/* Not last node, or is a directory, so append separator. */
+		sep = 1;  /* Used in math below, so must be 1, not just != 0. */
+		++len;
+	} else {
+		/* Last node (first in recursion), so don't append separator. */
+		sep = 0;
+	}
+	*buf_len += len;
+
+	if (dirent->parent == NULL) {
+		buf = malloc(*buf_len);
+		if (buf == NULL) {
+			return NULL;
+		}
+		*cur = buf;
+	} else if ((buf = _opkg_opk_dirent_name_alloc(dirent->parent, is_dir,
+					cur, buf_len)) == NULL) {
+		return NULL;
+	}
+
+	/* Copy node name and possibly separator suffix. */
+	memcpy(*cur, dirent->name, len - sep);
+	*cur += len - sep;
+	if (sep == 1) {
+		**cur = '/';
+		*cur += 1;
+	}
+
+	return buf;
+}
+
+char *
+opkg_opk_dirent_name_alloc(struct opkg_opk_dirent *dirent, int is_dir)
+{
+	char   *buf;
+	char   *cur     = NULL;
+	size_t  buf_len = 1;     /* 1 for NUL */
+
+	if ((buf = _opkg_opk_dirent_name_alloc(dirent, is_dir, &cur, &buf_len))
+			== NULL) {
+		return NULL;
+	}
+	*cur = '\0';
+	return buf;
+}