From a2e77776d9cee708030a8b1cc11febd3a7cf0d4f Mon Sep 17 00:00:00 2001
From: hongzhidao <hongzhidao@gmail.com>
Date: Sat, 23 Mar 2019 14:57:52 +0300
Subject: [PATCH] Fixed nxt_file_dirname() for paths with no dir component.

Making it more similar to dirname shell cmd.

This closes #114 issue on Github.
---
 njs/test/njs_unit_test.c |  4 ++--
 nxt/nxt_file.c           | 12 ++++++++----
 2 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/njs/test/njs_unit_test.c b/njs/test/njs_unit_test.c
index c3defffb..c6e84c0d 100644
--- a/njs/test/njs_unit_test.c
+++ b/njs/test/njs_unit_test.c
@@ -12456,13 +12456,13 @@ nxt_file_dirname_test(njs_vm_t * vm, nxt_bool_t disassemble,
         nxt_str_t   path;
         nxt_str_t   expected;
     } tests[] = {
-        { nxt_string(""),               nxt_string("") },
+        { nxt_string(""),               nxt_string(".") },
         { nxt_string("/"),              nxt_string("/") },
         { nxt_string("/a"),             nxt_string("/") },
         { nxt_string("///"),            nxt_string("///") },
         { nxt_string("///a"),           nxt_string("///") },
         { nxt_string("///a/"),          nxt_string("///a") },
-        { nxt_string("a"),              nxt_string("") },
+        { nxt_string("a"),              nxt_string(".") },
         { nxt_string("a/"),             nxt_string("a") },
         { nxt_string("a//"),            nxt_string("a") },
         { nxt_string("p1/p2/name"),     nxt_string("p1/p2") },
diff --git a/nxt/nxt_file.c b/nxt/nxt_file.c
index 4552e484..40edbcc9 100644
--- a/nxt/nxt_file.c
+++ b/nxt/nxt_file.c
@@ -38,8 +38,7 @@ nxt_file_dirname(const nxt_str_t *path, nxt_str_t *name)
     const u_char  *p, *end;
 
     if (path->length == 0) {
-        *name = nxt_string_value("");
-        return;
+        goto current_dir;
     }
 
     p = path->start + path->length - 1;
@@ -51,8 +50,7 @@ nxt_file_dirname(const nxt_str_t *path, nxt_str_t *name)
     end = p + 1;
 
     if (end == path->start) {
-        *name = nxt_string_value("");
-        return;
+        goto current_dir;
     }
 
     /* Stripping trailing slashes. */
@@ -67,4 +65,10 @@ nxt_file_dirname(const nxt_str_t *path, nxt_str_t *name)
 
     name->start = path->start;
     name->length = p - path->start;
+
+    return;
+
+current_dir:
+
+    *name = nxt_string_value(".");
 }
-- 
2.47.3