Code

PCHAR* CommandLineToArgvA(PCHAR CmdLine, int* _argc)
{
    PCHAR* argv;
    PCHAR  _argv;
    ULONG   len;
    ULONG   argc;
    CHAR   a;
    ULONG   i, j;


    BOOLEAN  in_QM;
    BOOLEAN  in_TEXT;
    BOOLEAN  in_SPACE;


    len = strlen(CmdLine);
    i = ((len+2)/2)*sizeof(PVOID) + sizeof(PVOID);


    argv = (PCHAR*)GlobalAlloc(GMEM_FIXED, i + (len+2)*sizeof(CHAR));
    _argv = (PCHAR)(((PUCHAR)argv)+i);


    argc = 0;
    argv[argc] = _argv;
    in_QM = FALSE;
    in_TEXT = FALSE;
    in_SPACE = TRUE;
    i = 0;
    j = 0;


    while( a = CmdLine[i] ) {
        if(in_QM) {
            if(a == '\"') {
                in_QM = FALSE;
            } 
            else {
                _argv[j] = a;
                j++;
            }
        } 
        else {
            switch(a) {
            case '\"':
                in_QM = TRUE;
                in_TEXT = TRUE;
                if(in_SPACE) {
                    argv[argc] = _argv+j;
                    argc++;
                }
                in_SPACE = FALSE;
                break;
            case ' ':
            case '\t':
            case '\n':
            case '\r':
                if(in_TEXT) {
                    _argv[j] = '\0';
                    j++;
                }
                in_TEXT = FALSE;
                in_SPACE = TRUE;
                break;
            default:
                in_TEXT = TRUE;
                if(in_SPACE) {
                    argv[argc] = _argv+j;
                    argc++;
                }
                _argv[j] = a;
                j++;
                in_SPACE = FALSE;
                break;
            }
        }
        i++;
    }
    _argv[j] = '\0';
    argv[argc] = NULL;


    (*_argc) = argc;
    return argv;
}

From http://alter.org.ua/en/docs/win/args/, modified