From 3a3a9f5cc15ccfc9f171f8916c5a0470a3585319 Mon Sep 17 00:00:00 2001
From: ridiculousfish <corydoras@ridiculousfish.com>
Date: Sat, 8 Aug 2015 14:52:04 -0700
Subject: Add wreaddir_for_dirs function

Eliminates some stat calls, speeding up wildcard expansion
---
 src/wutil.cpp | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

(limited to 'src/wutil.cpp')

diff --git a/src/wutil.cpp b/src/wutil.cpp
index b5689eec..19645042 100644
--- a/src/wutil.cpp
+++ b/src/wutil.cpp
@@ -115,6 +115,40 @@ bool wreaddir(DIR *dir, std::wstring &out_name)
     return true;
 }
 
+bool wreaddir_for_dirs(DIR *dir, wcstring *out_name)
+{
+    struct dirent *result = NULL;
+    while (result == NULL)
+    {
+        struct dirent *d = readdir(dir);
+        if (!d) break;
+        
+#if HAVE_STRUCT_DIRENT_D_TYPE
+        switch (d->d_type)
+        {
+            // These may be directories
+            case DT_DIR:
+            case DT_LNK:
+            case DT_UNKNOWN:
+                result = d;
+                break;
+                
+            // Nothing else can
+            default:
+                break;
+        }
+#else
+        /* We can't determine if it's a directory or not, so just return it */
+        result = d;
+#endif
+    }
+    if (result && out_name)
+    {
+        *out_name = str2wcstring(result->d_name);
+    }
+    return result != NULL;
+}
+
 
 wchar_t *wgetcwd(wchar_t *buff, size_t sz)
 {
-- 
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