1 files changed, 66 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/CPP/Windows/ErrorMsg.cpp b/other-licenses/7zstub/src/CPP/Windows/ErrorMsg.cpp
new file mode 100644
index 000000000..6434ec2f7
--- /dev/null
+++ b/other-licenses/7zstub/src/CPP/Windows/ErrorMsg.cpp
@@ -0,0 +1,66 @@
+// Windows/ErrorMsg.h
+
+#include "StdAfx.h"
+
+#ifndef _UNICODE
+#include "../Common/StringConvert.h"
+#endif
+
+#include "ErrorMsg.h"
+
+#ifndef _UNICODE
+extern bool g_IsNT;
+#endif
+
+namespace NWindows {
+namespace NError {
+
+static bool MyFormatMessage(DWORD errorCode, UString &message)
+{
+  LPVOID msgBuf;
+  #ifndef _UNICODE
+  if (!g_IsNT)
+  {
+    if (::FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
+        FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
+        NULL, errorCode, 0, (LPTSTR) &msgBuf, 0, NULL) == 0)
+      return false;
+    message = GetUnicodeString((LPCTSTR)msgBuf);
+  }
+  else
+  #endif
+  {
+    if (::FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER |
+        FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
+        NULL, errorCode, 0, (LPWSTR) &msgBuf, 0, NULL) == 0)
+      return false;
+    message = (LPCWSTR)msgBuf;
+  }
+  ::LocalFree(msgBuf);
+  return true;
+}
+
+UString MyFormatMessage(DWORD errorCode)
+{
+  UString m;
+  if (!MyFormatMessage(errorCode, m) || m.IsEmpty())
+  {
+    char s[16];
+    for (int i = 0; i < 8; i++)
+    {
+      unsigned t = errorCode & 0xF;
+      errorCode >>= 4;
+      s[7 - i] = (char)((t < 10) ? ('0' + t) : ('A' + (t - 10)));
+    }
+    s[8] = 0;
+    m += "Error #";
+    m += s;
+  }
+  else if (m.Len() >= 2
+      && m[m.Len() - 1] == 0x0A
+      && m[m.Len() - 2] == 0x0D)
+    m.DeleteFrom(m.Len() - 2);
+  return m;
+}
+
+}}