From afe6f96611cf7cd09aa6b6293d27015f9cea22d0 Mon Sep 17 00:00:00 2001
From: Aoran Zeng <ccmywish@qq.com>
Date: Fri, 29 Sep 2023 21:16:16 +0800
Subject: [PATCH] Add `xy_parent_dir()`

---
 test_xy.c |  3 ++-
 xy.h      | 18 +++++++++++++++++-
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/test_xy.c b/test_xy.c
index 631df5c..8997f8d 100644
--- a/test_xy.c
+++ b/test_xy.c
@@ -3,7 +3,7 @@
  * License       : MIT
  * Authors       : Aoran Zeng <ccmywish@qq.com>
  * Created on    : <2023-08-30>
- * Last modified : <2023-09-27>
+ * Last modified : <2023-09-29>
  *
  * test_xy:
  *
@@ -92,6 +92,7 @@ main (int argc, char const *argv[])
   assert(false==xy_file_exist(xy_win_powershellv5_profile));
 
   puts (xy_uniform_path(" \n ~/haha/test/123 \n\r "));
+  assert_str (xy_uniform_path("~/haha/test"), xy_parent_dir (" ~/haha/test/123") );
 
   xy_success("测试全部通过");
   return 0;
diff --git a/xy.h b/xy.h
index 9bec834..3aad576 100644
--- a/xy.h
+++ b/xy.h
@@ -3,7 +3,7 @@
  * License       : MIT
  * Authors       : Aoran Zeng <ccmywish@qq.com>
  * Created on    : <2023-08-28>
- * Last modified : <2023-09-27>
+ * Last modified : <2023-09-29>
  *
  * xy:
  *
@@ -557,4 +557,20 @@ xy_uniform_path (const char* path)
   return new;
 }
 
+
+static char*
+xy_parent_dir (const char* path)
+{
+  char* dir = xy_uniform_path (path);
+  char* last = NULL;
+  if (xy_on_windows) {
+    last = strrchr(dir, '\\');
+    *last = '\0';
+  } else {
+    last = strrchr(dir, '/');
+    *last = '\0';
+  }
+  return dir;
+}
+
 #endif