コード例 #1
0
	/* ARGSUSED */
static int
ChanPendingObjCmd(
    ClientData unused,		/* Not used. */
    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{
    Tcl_Channel chan;
    int index, mode;
    static const char *options[] = {"input", "output", NULL};
    enum options {PENDING_INPUT, PENDING_OUTPUT};

    if (objc != 3) {
	Tcl_WrongNumArgs(interp, 1, objv, "mode channelId");
	return TCL_ERROR;
    }

    if (Tcl_GetIndexFromObj(interp, objv[1], options, "mode", 0,
	    &index) != TCL_OK) {
	return TCL_ERROR;
    }

    if (TclGetChannelFromObj(interp, objv[2], &chan, &mode, 0) != TCL_OK) {
	return TCL_ERROR;
    }

    switch ((enum options) index) {
    case PENDING_INPUT:
	if ((mode & TCL_READABLE) == 0) {
	    Tcl_SetObjResult(interp, Tcl_NewIntObj(-1));
	} else {
	    Tcl_SetObjResult(interp, Tcl_NewIntObj(Tcl_InputBuffered(chan)));
	}
	break;
    case PENDING_OUTPUT:
	if ((mode & TCL_WRITABLE) == 0) {
	    Tcl_SetObjResult(interp, Tcl_NewIntObj(-1));
	} else {
	    Tcl_SetObjResult(interp, Tcl_NewIntObj(Tcl_OutputBuffered(chan)));
	}
	break;
    }
    return TCL_OK;
}
コード例 #2
0
ファイル: tclUnixChan.c プロジェクト: smh377/tcl
static int
TtyGetOptionProc(
    ClientData instanceData,	/* File state. */
    Tcl_Interp *interp,		/* For error reporting - can be NULL. */
    const char *optionName,	/* Option to get. */
    Tcl_DString *dsPtr)		/* Where to store value(s). */
{
    FileState *fsPtr = instanceData;
    unsigned int len;
    char buf[3*TCL_INTEGER_SPACE + 16];
    int valid = 0;		/* Flag if valid option parsed. */

    if (optionName == NULL) {
	len = 0;
    } else {
	len = strlen(optionName);
    }
    if (len == 0) {
	Tcl_DStringAppendElement(dsPtr, "-mode");
    }
    if (len==0 || (len>2 && strncmp(optionName, "-mode", len)==0)) {
	TtyAttrs tty;

	valid = 1;
	TtyGetAttributes(fsPtr->fd, &tty);
	sprintf(buf, "%d,%c,%d,%d", tty.baud, tty.parity, tty.data, tty.stop);
	Tcl_DStringAppendElement(dsPtr, buf);
    }

    /*
     * Get option -xchar
     */

    if (len == 0) {
	Tcl_DStringAppendElement(dsPtr, "-xchar");
	Tcl_DStringStartSublist(dsPtr);
    }
    if (len==0 || (len>1 && strncmp(optionName, "-xchar", len)==0)) {
	struct termios iostate;
	Tcl_DString ds;

	valid = 1;
	tcgetattr(fsPtr->fd, &iostate);
	Tcl_DStringInit(&ds);

	Tcl_ExternalToUtfDString(NULL, (char *) &iostate.c_cc[VSTART], 1, &ds);
	Tcl_DStringAppendElement(dsPtr, Tcl_DStringValue(&ds));
	TclDStringClear(&ds);

	Tcl_ExternalToUtfDString(NULL, (char *) &iostate.c_cc[VSTOP], 1, &ds);
	Tcl_DStringAppendElement(dsPtr, Tcl_DStringValue(&ds));
	Tcl_DStringFree(&ds);
    }
    if (len == 0) {
	Tcl_DStringEndSublist(dsPtr);
    }

    /*
     * Get option -queue
     * Option is readonly and returned by [fconfigure chan -queue] but not
     * returned by unnamed [fconfigure chan].
     */

    if ((len > 1) && (strncmp(optionName, "-queue", len) == 0)) {
	int inQueue=0, outQueue=0, inBuffered, outBuffered;

	valid = 1;
	GETREADQUEUE(fsPtr->fd, inQueue);
	GETWRITEQUEUE(fsPtr->fd, outQueue);
	inBuffered = Tcl_InputBuffered(fsPtr->channel);
	outBuffered = Tcl_OutputBuffered(fsPtr->channel);

	sprintf(buf, "%d", inBuffered+inQueue);
	Tcl_DStringAppendElement(dsPtr, buf);
	sprintf(buf, "%d", outBuffered+outQueue);
	Tcl_DStringAppendElement(dsPtr, buf);
    }

#if defined(TIOCMGET)
    /*
     * Get option -ttystatus
     * Option is readonly and returned by [fconfigure chan -ttystatus] but not
     * returned by unnamed [fconfigure chan].
     */
    if ((len > 4) && (strncmp(optionName, "-ttystatus", len) == 0)) {
	int status;

	valid = 1;
	ioctl(fsPtr->fd, TIOCMGET, &status);
	TtyModemStatusStr(status, dsPtr);
    }
#endif /* TIOCMGET */

    if (valid) {
	return TCL_OK;
    }
    return Tcl_BadChannelOption(interp, optionName, "mode"
	    " queue ttystatus xchar"
	    );
}