1 files changed, 131 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/CPP/Windows/FileSystem.cpp b/other-licenses/7zstub/src/CPP/Windows/FileSystem.cpp
new file mode 100644
index 000000000..986106280
--- /dev/null
+++ b/other-licenses/7zstub/src/CPP/Windows/FileSystem.cpp
@@ -0,0 +1,131 @@
+// Windows/FileSystem.cpp
+
+#include "StdAfx.h"
+
+#ifndef UNDER_CE
+
+#ifndef _UNICODE
+#include "../Common/StringConvert.h"
+#endif
+
+#include "FileSystem.h"
+#include "Defs.h"
+
+#ifndef _UNICODE
+extern bool g_IsNT;
+#endif
+
+namespace NWindows {
+namespace NFile {
+namespace NSystem {
+
+bool MyGetVolumeInformation(
+    CFSTR rootPath,
+    UString &volumeName,
+    LPDWORD volumeSerialNumber,
+    LPDWORD maximumComponentLength,
+    LPDWORD fileSystemFlags,
+    UString &fileSystemName)
+{
+  BOOL res;
+  #ifndef _UNICODE
+  if (!g_IsNT)
+  {
+    TCHAR v[MAX_PATH + 2]; v[0] = 0;
+    TCHAR f[MAX_PATH + 2]; f[0] = 0;
+    res = GetVolumeInformation(fs2fas(rootPath),
+        v, MAX_PATH,
+        volumeSerialNumber, maximumComponentLength, fileSystemFlags,
+        f, MAX_PATH);
+    volumeName = MultiByteToUnicodeString(v);
+    fileSystemName = MultiByteToUnicodeString(f);
+  }
+  else
+  #endif
+  {
+    WCHAR v[MAX_PATH + 2]; v[0] = 0;
+    WCHAR f[MAX_PATH + 2]; f[0] = 0;
+    res = GetVolumeInformationW(fs2us(rootPath),
+        v, MAX_PATH,
+        volumeSerialNumber, maximumComponentLength, fileSystemFlags,
+        f, MAX_PATH);
+    volumeName = v;
+    fileSystemName = f;
+  }
+  return BOOLToBool(res);
+}
+
+UINT MyGetDriveType(CFSTR pathName)
+{
+  #ifndef _UNICODE
+  if (!g_IsNT)
+  {
+    return GetDriveType(fs2fas(pathName));
+  }
+  else
+  #endif
+  {
+    return GetDriveTypeW(fs2us(pathName));
+  }
+}
+
+typedef BOOL (WINAPI * GetDiskFreeSpaceExA_Pointer)(
+  LPCSTR lpDirectoryName,                  // directory name
+  PULARGE_INTEGER lpFreeBytesAvailable,    // bytes available to caller
+  PULARGE_INTEGER lpTotalNumberOfBytes,    // bytes on disk
+  PULARGE_INTEGER lpTotalNumberOfFreeBytes // free bytes on disk
+);
+
+typedef BOOL (WINAPI * GetDiskFreeSpaceExW_Pointer)(
+  LPCWSTR lpDirectoryName,                 // directory name
+  PULARGE_INTEGER lpFreeBytesAvailable,    // bytes available to caller
+  PULARGE_INTEGER lpTotalNumberOfBytes,    // bytes on disk
+  PULARGE_INTEGER lpTotalNumberOfFreeBytes // free bytes on disk
+);
+
+bool MyGetDiskFreeSpace(CFSTR rootPath, UInt64 &clusterSize, UInt64 &totalSize, UInt64 &freeSize)
+{
+  DWORD numSectorsPerCluster, bytesPerSector, numFreeClusters, numClusters;
+  bool sizeIsDetected = false;
+  #ifndef _UNICODE
+  if (!g_IsNT)
+  {
+    GetDiskFreeSpaceExA_Pointer pGetDiskFreeSpaceEx = (GetDiskFreeSpaceExA_Pointer)GetProcAddress(
+        GetModuleHandle(TEXT("kernel32.dll")), "GetDiskFreeSpaceExA");
+    if (pGetDiskFreeSpaceEx)
+    {
+      ULARGE_INTEGER freeBytesToCaller2, totalSize2, freeSize2;
+      sizeIsDetected = BOOLToBool(pGetDiskFreeSpaceEx(fs2fas(rootPath), &freeBytesToCaller2, &totalSize2, &freeSize2));
+      totalSize = totalSize2.QuadPart;
+      freeSize = freeSize2.QuadPart;
+    }
+    if (!::GetDiskFreeSpace(fs2fas(rootPath), &numSectorsPerCluster, &bytesPerSector, &numFreeClusters, &numClusters))
+      return false;
+  }
+  else
+  #endif
+  {
+    GetDiskFreeSpaceExW_Pointer pGetDiskFreeSpaceEx = (GetDiskFreeSpaceExW_Pointer)GetProcAddress(
+        GetModuleHandle(TEXT("kernel32.dll")), "GetDiskFreeSpaceExW");
+    if (pGetDiskFreeSpaceEx)
+    {
+      ULARGE_INTEGER freeBytesToCaller2, totalSize2, freeSize2;
+      sizeIsDetected = BOOLToBool(pGetDiskFreeSpaceEx(fs2us(rootPath), &freeBytesToCaller2, &totalSize2, &freeSize2));
+      totalSize = totalSize2.QuadPart;
+      freeSize = freeSize2.QuadPart;
+    }
+    if (!::GetDiskFreeSpaceW(fs2us(rootPath), &numSectorsPerCluster, &bytesPerSector, &numFreeClusters, &numClusters))
+      return false;
+  }
+  clusterSize = (UInt64)bytesPerSector * (UInt64)numSectorsPerCluster;
+  if (!sizeIsDetected)
+  {
+    totalSize = clusterSize * (UInt64)numClusters;
+    freeSize = clusterSize * (UInt64)numFreeClusters;
+  }
+  return true;
+}
+
+}}}
+
+#endif