/**
* 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 = ~0;
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];
}
static bool strIsPermissibleDuplicate(const RTSTATUSMSG *pMsg)
{
const char *pszDefine = pMsg->pszDefine;
size_t cchDefine = strlen(pszDefine);
#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)) )
return STR_ENDS_WITH(pszDefine, cchDefine, "_FIRST")
|| STR_ENDS_WITH(pszDefine, cchDefine, "_LAST")
|| STR_ENDS_WITH(pszDefine, cchDefine, "_LOWEST")
|| STR_ENDS_WITH(pszDefine, cchDefine, "_HIGHEST")
|| strstr(pMsg->pszMsgShort, "(mapped to") != 0;
}
