From 58fa70b5808592533adc1224daa783fe39837f8e Mon Sep 17 00:00:00 2001
From: d0vgan <dvv81@ukr.net>
Date: Mon, 26 Feb 2018 11:59:40 +0200
Subject: [PATCH] Fix file status detection issue under Windows XP (32-bit
 only)

Close #4226
---
 PowerEditor/src/MISC/Common/Common.cpp | 64 +++++++++++++++++++++++++-
 PowerEditor/src/MISC/Common/Common.h   | 10 +++-
 2 files changed, 72 insertions(+), 2 deletions(-)

diff --git a/PowerEditor/src/MISC/Common/Common.cpp b/PowerEditor/src/MISC/Common/Common.cpp
index 3767864b..cc444a9a 100644
--- a/PowerEditor/src/MISC/Common/Common.cpp
+++ b/PowerEditor/src/MISC/Common/Common.cpp
@@ -34,6 +34,7 @@
 
 #include "Common.h"
 #include "../Utf8.h"
+#include <Parameters.h>
 
 WcharMbcsConvertor* WcharMbcsConvertor::_pSelf = new WcharMbcsConvertor;
 
@@ -1192,4 +1193,65 @@ bool isAssoCommandExisting(LPCTSTR FullPathName)
         
 	}
 	return isAssoCommandExisting;
-}
\ No newline at end of file
+}
+
+#ifndef _WIN64
+static bool IsWindows2000orXP()
+{
+    bool isWin2kXP = false;
+    switch (NppParameters::getInstance()->getWinVersion())
+    {
+        case WV_W2K:
+        case WV_XP:
+        case WV_S2003:
+            isWin2kXP = true;
+            break;
+    }
+    return isWin2kXP;
+}
+
+static ULONGLONG filetime_to_time_ull(const FILETIME* ft)
+{
+    ULARGE_INTEGER ull;
+    ull.LowPart = ft->dwLowDateTime;
+    ull.HighPart = ft->dwHighDateTime;
+    return (ull.QuadPart / 10000000ULL - 11644473600ULL);
+}
+
+int custom_wstat(wchar_t const* _FileName, struct _stat* _Stat)
+{
+    static bool isWin2kXP = IsWindows2000orXP();
+    if (!isWin2kXP)
+        return _wstat(_FileName, _Stat);
+
+    // In Visual Studio 2015, _wstat always returns -1 in Windows XP.
+    // So here is a WinAPI-based implementation of _wstat.
+    int nResult = -1;
+    HANDLE hFile = ::CreateFile(_FileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
+    if (hFile != INVALID_HANDLE_VALUE)
+    {
+        LARGE_INTEGER fileSize;
+        FILETIME creationTime, accessTime, writeTime;
+        if (::GetFileSizeEx(hFile, &fileSize) &&
+            ::GetFileTime(hFile, &creationTime, &accessTime, &writeTime))
+        {
+            DWORD dwAttr = ::GetFileAttributes(_FileName);
+            ::ZeroMemory(_Stat, sizeof(struct _stat));
+            _Stat->st_atime = static_cast<decltype(_Stat->st_atime)>(filetime_to_time_ull(&accessTime));
+            _Stat->st_ctime = static_cast<decltype(_Stat->st_ctime)>(filetime_to_time_ull(&creationTime));
+            _Stat->st_mtime = static_cast<decltype(_Stat->st_mtime)>(filetime_to_time_ull(&writeTime));
+            _Stat->st_size = static_cast<decltype(_Stat->st_size)>(fileSize.QuadPart);
+            _Stat->st_mode = _S_IREAD | _S_IEXEC; // S_IEXEC : Execute (for ordinary files) or search (for directories)
+            if ((dwAttr & FILE_ATTRIBUTE_READONLY) == 0)
+                _Stat->st_mode |= _S_IWRITE;
+            if ((dwAttr & FILE_ATTRIBUTE_DIRECTORY) != 0)
+                _Stat->st_mode |= _S_IFDIR;
+            else
+                _Stat->st_mode |= _S_IFREG;
+            nResult = 0;
+        }
+        ::CloseHandle(hFile);
+    }
+    return nResult;
+}
+#endif
diff --git a/PowerEditor/src/MISC/Common/Common.h b/PowerEditor/src/MISC/Common/Common.h
index 7f130bdf..a7514812 100644
--- a/PowerEditor/src/MISC/Common/Common.h
+++ b/PowerEditor/src/MISC/Common/Common.h
@@ -62,7 +62,11 @@ const bool dirDown = false;
 #define generic_sscanf swscanf
 #define generic_fopen _wfopen
 #define generic_fgets fgetws
-#define generic_stat _wstat
+#ifdef _WIN64
+  #define generic_stat _wstat
+#else
+  #define generic_stat custom_wstat
+#endif
 #define COPYDATA_FILENAMES COPYDATA_FILENAMESW
 
 typedef std::basic_string<TCHAR> generic_string;
@@ -192,3 +196,7 @@ HWND CreateToolTip(int toolID, HWND hDlg, HINSTANCE hInst, const PTSTR pszText);
 
 bool isCertificateValidated(const generic_string & fullFilePath, const generic_string & subjectName2check);
 bool isAssoCommandExisting(LPCTSTR FullPathName);
+
+#ifndef _WIN64
+int custom_wstat(wchar_t const* _FileName, struct _stat* _Stat);
+#endif