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94 lines
2 KiB
C++
94 lines
2 KiB
C++
#include "All.h"
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#include "GlobalFunctions.h"
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#include "IO.h"
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#ifndef __GNUC_IA32__
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#pragma warning( disable : 4035 )
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extern "C" BOOL
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GetMMXAvailable ( void ) // No check for 80286 and below, code won't compile on 16 bit due to "int = 32 bit" assumption
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{
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#if defined ENABLE_ASSEMBLY
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_asm {
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pushfd
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pop eax
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mov ecx, eax
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xor eax, 0x200000
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push eax
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popfd
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pushfd
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pop eax
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cmp eax, ecx
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jz retval // no CPUID instruction available => 80386, 80486
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mov eax, 1
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CPUID
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test edx, 0x800000 // MMX available ?
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retval: setnz al
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and eax, 1
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}
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#else
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return FALSE;
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#endif
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}
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#pragma warning( default : 4035 )
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#endif /* __GNUC_IA32__ */
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int ReadSafe(CIO * pIO, void * pBuffer, int nBytes)
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{
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unsigned int nBytesRead = 0;
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int nRetVal = pIO->Read(pBuffer, nBytes, &nBytesRead);
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if (nRetVal == ERROR_SUCCESS)
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{
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if (nBytes != int(nBytesRead))
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nRetVal = ERROR_IO_READ;
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}
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return nRetVal;
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}
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int WriteSafe(CIO * pIO, void * pBuffer, int nBytes)
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{
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unsigned int nBytesWritten = 0;
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int nRetVal = pIO->Write(pBuffer, nBytes, &nBytesWritten);
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if (nRetVal == ERROR_SUCCESS)
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{
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if (nBytes != int(nBytesWritten))
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nRetVal = ERROR_IO_WRITE;
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}
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return nRetVal;
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}
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BOOL FileExists ( const char* pFilename )
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{
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if ( 0 == strcmp ( pFilename, "-" ) || 0 == strcmp ( pFilename, "/dev/stdin" ) )
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return TRUE;
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#ifdef _WIN32
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BOOL bFound = FALSE;
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WIN32_FIND_DATA WFD;
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HANDLE hFind = FindFirstFile(pFilename, &WFD);
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if (hFind != INVALID_HANDLE_VALUE)
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{
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bFound = TRUE;
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CloseHandle(hFind);
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}
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return bFound;
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#else
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struct stat b;
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if ( stat ( pFilename, &b ) != 0 )
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return FALSE;
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if ( ! S_ISREG (b.st_mode) )
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return FALSE;
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return TRUE;
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#endif
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}
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