From f19f813537c7aea1c20749c914e756b54a9c3cf5 Mon Sep 17 00:00:00 2001
From: Igor Pavlov <87184205+ip7z@users.noreply.github.com>
Date: Mon, 27 Dec 2021 00:00:00 +0000
Subject: '21.07'

---
 CPP/Windows/ErrorMsg.cpp | 133 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 133 insertions(+)
 create mode 100644 CPP/Windows/ErrorMsg.cpp

(limited to 'CPP/Windows/ErrorMsg.cpp')

diff --git a/CPP/Windows/ErrorMsg.cpp b/CPP/Windows/ErrorMsg.cpp
new file mode 100644
index 0000000..f6343a5
--- /dev/null
+++ b/CPP/Windows/ErrorMsg.cpp
@@ -0,0 +1,133 @@
+// Windows/ErrorMsg.h
+
+#include "StdAfx.h"
+
+#if !defined(_UNICODE) || !defined(_WIN32)
+#include "../Common/StringConvert.h"
+#endif
+
+#include "ErrorMsg.h"
+
+#ifdef _WIN32
+#if !defined(_UNICODE)
+extern bool g_IsNT;
+#endif
+#endif
+
+namespace NWindows {
+namespace NError {
+
+static bool MyFormatMessage(DWORD errorCode, UString &message)
+{
+  #ifndef _SFX
+  if ((HRESULT)errorCode == MY_HRES_ERROR__INTERNAL_ERROR)
+  {
+    message = "Internal Error: The failure in hardware (RAM or CPU), OS or program";
+    return true;
+  }
+  #endif
+
+  #ifdef _WIN32
+  
+  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;
+  
+  #else // _WIN32
+
+  AString m;
+
+  const char *s = NULL;
+
+  switch ((Int32)errorCode)
+  {
+    // case ERROR_NO_MORE_FILES   : s = "No more files"; break;
+    // case ERROR_DIRECTORY       : s = "Error Directory"; break;
+    case E_NOTIMPL             : s = "E_NOTIMPL : Not implemented"; break;
+    case E_NOINTERFACE         : s = "E_NOINTERFACE : No such interface supported"; break;
+    case E_ABORT               : s = "E_ABORT : Operation aborted"; break;
+    case E_FAIL                : s = "E_FAIL : Unspecified error"; break;
+    
+    case STG_E_INVALIDFUNCTION : s = "STG_E_INVALIDFUNCTION"; break;
+    case CLASS_E_CLASSNOTAVAILABLE : s = "CLASS_E_CLASSNOTAVAILABLE"; break;
+    
+    case E_OUTOFMEMORY         : s = "E_OUTOFMEMORY : Can't allocate required memory"; break;
+    case E_INVALIDARG          : s = "E_INVALIDARG : One or more arguments are invalid"; break;
+    
+    // case MY__E_ERROR_NEGATIVE_SEEK : s = "MY__E_ERROR_NEGATIVE_SEEK"; break;
+    default:
+      break;
+  }
+
+  /* strerror() for unknown errors still shows message "Unknown error -12345678")
+     So we must transfer error codes before strerror() */
+  if (!s)
+  {
+    if ((errorCode & 0xFFFF0000) == (UInt32)((MY__FACILITY__WRes << 16) | 0x80000000))
+      errorCode &= 0xFFFF;
+    else if ((errorCode & ((UInt32)1 << 31)))
+      return false; // we will show hex error later for that case
+    
+    s = strerror((int)errorCode);
+  
+    // if (!s)
+    {
+      m += "errno=";
+      m.Add_UInt32(errorCode);
+      if (s)
+        m += " : ";
+    }
+  }
+  
+  if (s)
+    m += s;
+
+  MultiByteToUnicodeString2(message, m);
+  return true;
+
+  #endif
+}
+
+
+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;
+}
+
+}}
-- 
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