156 lines
5.9 KiB
C++
156 lines
5.9 KiB
C++
// OsExc.cpp -- Operating System Exception template class definition
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// (c) Copyright Schlumberger Technology Corp., unpublished work, created
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// 1999. This computer program includes Confidential, Proprietary
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// Information and is a Trade Secret of Schlumberger Technology Corp. All
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// use, disclosure, and/or reproduction is prohibited unless authorized
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// in writing. All Rights Reserved.
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#include "scuOsExc.h"
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using namespace scu;
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/////////////////////////// LOCAL/HELPER /////////////////////////////////
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/////////////////////////// PUBLIC /////////////////////////////////
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// Types
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// C'tors/D'tors
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// Operators
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// Operations
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// Access
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// Predicates
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// Static Variables
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/////////////////////////// PROTECTED /////////////////////////////////
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// C'tors/D'tors
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// Operators
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// Operations
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// Access
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// Predicates
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// Static Variables
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/////////////////////////// PRIVATE /////////////////////////////////
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// C'tors/D'tors
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// Operators
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// Operations
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// Access
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// Predicates
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// Static Variables
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/////////////////////////// PUBLIC /////////////////////////////////
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// Types
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// C'tors/D'tors
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OsException::OsException(CauseCode cc) throw()
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: ExcTemplate<Exception::fcOS, DWORD>(cc),
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m_lpDescription(0)
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{}
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OsException::OsException(HRESULT hr) throw()
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: ExcTemplate<Exception::fcOS, DWORD>(static_cast<DWORD>(hr)),
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m_lpDescription(0)
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{}
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OsException::OsException(OsException const &rhs)
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: ExcTemplate<Exception::fcOS, DWORD>(rhs),
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m_lpDescription(0) // force the copy to cache it's own description.
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{}
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OsException::~OsException() throw()
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{
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try
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{
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if (m_lpDescription)
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LocalFree(m_lpDescription);
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}
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catch (...)
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{
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}
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}
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// Operators
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// Operations
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Exception *
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OsException::Clone() const
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{
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return new OsException(*this);
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}
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void
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OsException::Raise() const
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{
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throw *this;
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}
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// Access
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char const *
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OsException::Description() const
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{
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if (!m_lpDescription)
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{
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// cache the description
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DWORD const dwBaseFlags = FORMAT_MESSAGE_ALLOCATE_BUFFER |
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FORMAT_MESSAGE_IGNORE_INSERTS;
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CauseCode const cc = Cause();
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DWORD const dwLanguageId = LANG_NEUTRAL;
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DWORD cMsgLength;
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// Note: The compiler complains without the
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// reinterpret_cast<LPTSTR> even though the declarations appear
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// compatible. Something strange in the declaration of LPTSTR and
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// LPSTR used by FormatMessageA.
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cMsgLength = FormatMessage(dwBaseFlags | FORMAT_MESSAGE_FROM_SYSTEM,
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NULL, cc, dwLanguageId,
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reinterpret_cast<LPTSTR>(&m_lpDescription),
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0, NULL);
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if (0 == cMsgLength)
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{
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cMsgLength = FormatMessage(dwBaseFlags |
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FORMAT_MESSAGE_FROM_HMODULE,
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GetModuleHandle(NULL), cc,
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dwLanguageId,
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reinterpret_cast<LPTSTR>(&m_lpDescription),
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0, NULL);
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if (0 == cMsgLength)
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{
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// if this fails, assume a message doesn't exist
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cMsgLength = FormatMessage(dwBaseFlags |
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FORMAT_MESSAGE_FROM_HMODULE,
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GetModuleHandle(TEXT("winscard")),
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cc, dwLanguageId,
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reinterpret_cast<LPTSTR>(&m_lpDescription),
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0, NULL);
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}
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}
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}
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return m_lpDescription;
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}
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// Predicates
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// Static Variables
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/////////////////////////// PROTECTED /////////////////////////////////
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// C'tors/D'tors
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// Operators
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// Operations
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// Access
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// Predicates
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// Static Variables
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/////////////////////////// PRIVATE /////////////////////////////////
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// C'tors/D'tors
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// Operators
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// Operations
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// Access
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// Predicates
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// Static Variables
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