real_path: create real_pathdup

Create real_pathdup which returns a caller owned string of the resolved
realpath based on the provide path.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/abspath.c b/abspath.c
index 8c6c76b05e..79ee310867 100644
--- a/abspath.c
+++ b/abspath.c
@@ -205,6 +205,19 @@ const char *real_path_if_valid(const char *path)
 	return strbuf_realpath(&realpath, path, 0);
 }
 
+char *real_pathdup(const char *path)
+{
+	struct strbuf realpath = STRBUF_INIT;
+	char *retval = NULL;
+
+	if (strbuf_realpath(&realpath, path, 0))
+		retval = strbuf_detach(&realpath, NULL);
+
+	strbuf_release(&realpath);
+
+	return retval;
+}
+
 /*
  * Use this to get an absolute path from a relative one. If you want
  * to resolve links, you should use real_path.