From d551d40886f50f83f5893891e8ed15b2dd786cf6 Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Tue, 23 Jun 2015 13:09:36 +0200
Subject: fs/NarrowPath: use the WideCharToMultiByte() wrapper

---
 src/fs/NarrowPath.hxx | 30 ++++++++++++++++--------------
 1 file changed, 16 insertions(+), 14 deletions(-)

diff --git a/src/fs/NarrowPath.hxx b/src/fs/NarrowPath.hxx
index ad310cd5c..433a9c1cd 100644
--- a/src/fs/NarrowPath.hxx
+++ b/src/fs/NarrowPath.hxx
@@ -25,7 +25,11 @@
 #include "util/Macros.hxx"
 
 #ifdef _UNICODE
+#include "lib/icu/Win32.hxx"
+#include "util/AllocatedString.hxx"
 #include <windows.h>
+#else
+#include "util/StringPointer.hxx"
 #endif
 
 /**
@@ -34,35 +38,33 @@
  * that accepts only "const char *".
  */
 class NarrowPath {
-	typedef char value_type;
-	typedef const char *const_pointer;
-
 #ifdef _UNICODE
-	char value[PATH_MAX];
+	typedef AllocatedString<> Value;
 #else
-	const_pointer value;
+	typedef StringPointer<> Value;
 #endif
+	typedef typename Value::const_pointer const_pointer;
+
+	Value value;
 
 public:
 #ifdef _UNICODE
-	explicit NarrowPath(Path _path) {
-		auto result = WideCharToMultiByte(CP_ACP, 0,
-						  _path.c_str(), -1,
-						  value, ARRAY_SIZE(value),
-						  nullptr, nullptr);
-		if (result < 0)
-			value[0] = 0;
+	explicit NarrowPath(Path _path)
+		:value(WideCharToMultiByte(CP_ACP, _path.c_str())) {
+		if (value.IsNull())
+			/* fall back to empty string */
+			value = Value::Empty();
 	}
 #else
 	explicit NarrowPath(Path _path):value(_path.c_str()) {}
 #endif
 
 	operator const_pointer() const {
-		return value;
+		return c_str();
 	}
 
 	const_pointer c_str() const {
-		return value;
+		return value.c_str();
 	}
 };
 
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