From d34f88080c8cf2bb0c850dab5911a835eb80cc8d Mon Sep 17 00:00:00 2001
From: Thomas Goyne <plorkyeran@aegisub.org>
Date: Fri, 8 Feb 2013 09:02:30 -0800
Subject: [PATCH] Fix directory iteration on Windows XP

---
 aegisub/libaegisub/windows/fs.cpp | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/aegisub/libaegisub/windows/fs.cpp b/aegisub/libaegisub/windows/fs.cpp
index b075775e5..57c29d10f 100644
--- a/aegisub/libaegisub/windows/fs.cpp
+++ b/aegisub/libaegisub/windows/fs.cpp
@@ -32,6 +32,20 @@ namespace bfs = boost::filesystem;
 
 #undef CreateDirectory
 
+namespace {
+	FINDEX_INFO_LEVELS find_info_level() {
+		OSVERSIONINFO osvi;
+		ZeroMemory(&osvi, sizeof(OSVERSIONINFO));
+		osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
+		GetVersionEx(&osvi);
+
+		if (osvi.dwMajorVersion > 6 || (osvi.dwMajorVersion == 6 && osvi.dwMinorVersion >= 1))
+			return FindExInfoBasic;
+		else
+			return FindExInfoStandard;
+	}
+}
+
 namespace agi { namespace fs {
 std::string ShortName(path const& p) {
 	std::wstring out(MAX_PATH + 1, 0);
@@ -68,7 +82,7 @@ DirectoryIterator::DirectoryIterator(path const& p, std::string const& filter)
 : privdata(new PrivData)
 {
 	WIN32_FIND_DATA data;
-	privdata->h = FindFirstFileEx((p/(filter.empty() ? "*.*" : filter)).c_str(), FindExInfoBasic, &data, FindExSearchNameMatch, nullptr, 0);
+	privdata->h = FindFirstFileEx((p/(filter.empty() ? "*.*" : filter)).c_str(), find_info_level(), &data, FindExSearchNameMatch, nullptr, 0);
 	if (privdata->h == INVALID_HANDLE_VALUE) {
 		privdata.reset();
 		return;