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/* $Id: errmsg.cpp $ */
/** @file
* IPRT - Status code messages.
*/
/*
* Copyright (C) 2006-2019 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include <iprt/err.h>
#include "internal/iprt.h"
#include <iprt/asm.h>
#include <iprt/string.h>
#include <iprt/err.h>
#include <VBox/err.h>
/*********************************************************************************************************************************
* Global Variables *
*********************************************************************************************************************************/
/** Array of messages.
* The data is generated by a sed script.
*/
static const RTSTATUSMSG g_aStatusMsgs[] =
{
#if !defined(IPRT_NO_ERROR_DATA) && !defined(DOXYGEN_RUNNING)
# include "errmsgdata.h"
#else
{ "Success.", "Success.", "VINF_SUCCESS", 0 },
#endif
{ NULL, NULL, NULL, 0 }
};
/** Temporary buffers to format unknown messages in.
* @{
*/
static char g_aszUnknownStr[4][64];
static RTSTATUSMSG g_aUnknownMsgs[4] =
{
{ &g_aszUnknownStr[0][0], &g_aszUnknownStr[0][0], &g_aszUnknownStr[0][0], 0 },
{ &g_aszUnknownStr[1][0], &g_aszUnknownStr[1][0], &g_aszUnknownStr[1][0], 0 },
{ &g_aszUnknownStr[2][0], &g_aszUnknownStr[2][0], &g_aszUnknownStr[2][0], 0 },
{ &g_aszUnknownStr[3][0], &g_aszUnknownStr[3][0], &g_aszUnknownStr[3][0], 0 }
};
/** Last used index in g_aUnknownMsgs. */
static volatile uint32_t g_iUnknownMsgs;
/** @} */
/**
* Get the message corresponding to a given status code.
*
* @returns Pointer to read-only message description.
* @param rc The status code.
*/
RTDECL(PCRTSTATUSMSG) RTErrGet(int rc)
{
unsigned iFound = ~0U;
unsigned i;
for (i = 0; i < RT_ELEMENTS(g_aStatusMsgs) - 1; i++)
{
if (g_aStatusMsgs[i].iCode == rc)
{
/*
* Found a match.
* Since this isn't a unique key, we must check that it's not
* one of those start/end #defines before we return.
*/
#define STR_ENDS_WITH(a_psz, a_cch, a_sz) \
( (a_cch) >= sizeof(a_sz) && !strncmp((a_psz) + (a_cch) - sizeof(a_sz) + 1, RT_STR_TUPLE(a_sz)) )
size_t const cchDefine = strlen(g_aStatusMsgs[i].pszDefine);
if ( !STR_ENDS_WITH(g_aStatusMsgs[i].pszDefine, cchDefine, "_FIRST")
&& !STR_ENDS_WITH(g_aStatusMsgs[i].pszDefine, cchDefine, "_LAST")
&& !STR_ENDS_WITH(g_aStatusMsgs[i].pszDefine, cchDefine, "_LOWEST")
&& !STR_ENDS_WITH(g_aStatusMsgs[i].pszDefine, cchDefine, "_HIGHEST")
)
return &g_aStatusMsgs[i];
iFound = i;
}
}
if (iFound != ~0U)
return &g_aStatusMsgs[iFound];
/*
* Need to use the temporary stuff.
*/
int iMsg = ASMAtomicXchgU32(&g_iUnknownMsgs, (g_iUnknownMsgs + 1) % RT_ELEMENTS(g_aUnknownMsgs));
RTStrPrintf(&g_aszUnknownStr[iMsg][0], sizeof(g_aszUnknownStr[iMsg]), "Unknown Status %d (%#x)", rc, rc);
return &g_aUnknownMsgs[iMsg];
}
RT_EXPORT_SYMBOL(RTErrGet);
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