/* ARGSUSED */
int
Tcl_FconfigureObjCmd(
    ClientData clientData,	/* Not used. */
    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{
    char *optionName, *valueName;
    Tcl_Channel chan;		/* The channel to set a mode on. */
    int i;			/* Iterate over arg-value pairs. */

    if ((objc < 2) || (((objc % 2) == 1) && (objc != 3))) {
	Tcl_WrongNumArgs(interp, 1, objv,
		"channelId ?optionName? ?value? ?optionName value?...");
	return TCL_ERROR;
    }

    if (TclGetChannelFromObj(interp, objv[1], &chan, NULL, 0) != TCL_OK) {
	return TCL_ERROR;
    }

    if (objc == 2) {
	Tcl_DString ds;		/* DString to hold result of calling
				 * Tcl_GetChannelOption. */

	Tcl_DStringInit(&ds);
	if (Tcl_GetChannelOption(interp, chan, NULL, &ds) != TCL_OK) {
	    Tcl_DStringFree(&ds);
	    return TCL_ERROR;
	}
	Tcl_DStringResult(interp, &ds);
	return TCL_OK;
    } else if (objc == 3) {
	Tcl_DString ds;		/* DString to hold result of calling
				 * Tcl_GetChannelOption. */

	Tcl_DStringInit(&ds);
	optionName = TclGetString(objv[2]);
	if (Tcl_GetChannelOption(interp, chan, optionName, &ds) != TCL_OK) {
	    Tcl_DStringFree(&ds);
	    return TCL_ERROR;
	}
	Tcl_DStringResult(interp, &ds);
	return TCL_OK;
    }

    for (i = 3; i < objc; i += 2) {
	optionName = TclGetString(objv[i-1]);
	valueName = TclGetString(objv[i]);
	if (Tcl_SetChannelOption(interp, chan, optionName, valueName)
		!= TCL_OK) {
	    return TCL_ERROR;
	}
    }

    return TCL_OK;
}
static int
ChanTruncateObjCmd(
    ClientData dummy,		/* Not used. */
    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{
    Tcl_Channel chan;
    Tcl_WideInt length;

    if ((objc < 2) || (objc > 3)) {
	Tcl_WrongNumArgs(interp, 1, objv, "channelId ?length?");
	return TCL_ERROR;
    }
    if (TclGetChannelFromObj(interp, objv[1], &chan, NULL, 0) != TCL_OK) {
	return TCL_ERROR;
    }

    if (objc == 3) {
	/*
	 * User is supplying an explicit length.
	 */

	if (Tcl_GetWideIntFromObj(interp, objv[2], &length) != TCL_OK) {
	    return TCL_ERROR;
	}
	if (length < 0) {
	    Tcl_AppendResult(interp,
		    "cannot truncate to negative length of file", NULL);
	    return TCL_ERROR;
	}
    } else {
	/*
	 * User wants to truncate to the current file position.
	 */

	length = Tcl_Tell(chan);
	if (length == Tcl_WideAsLong(-1)) {
	    Tcl_AppendResult(interp,
		    "could not determine current location in \"",
		    TclGetString(objv[1]), "\": ",
		    Tcl_PosixError(interp), NULL);
	    return TCL_ERROR;
	}
    }

    if (Tcl_TruncateChannel(chan, length) != TCL_OK) {
	Tcl_AppendResult(interp, "error during truncate on \"",
		TclGetString(objv[1]), "\": ",
		Tcl_PosixError(interp), NULL);
	return TCL_ERROR;
    }

    return TCL_OK;
}
示例#3
0
int tclFit(ClientData data,Tcl_Interp* interp,int argc, char *argv[])
{
  int i;
  int npar2;
  double val[512];
  double scal[512];
  int   used[512];
  char method[256];
  char *p,**pp,**pp2;

  if (argc != 2) {
    fprintf(stderr,"%s: specify array with parameters\n",argv[0]);
    return 1;
  }
  iter=0;
  strcpy(array,argv[1]);
  intrp = interp;

  TclGetString(interp,function,array,"function",1,"");

  TclGetString(interp,method,array,"fitmethod",0,"simplex");  
  
  p=Tcl_GetVar2(interp,array,"values",0);
  if (p == NULL)
    TclError(interp,"array must contain a variable 'values'");

  if (Tcl_SplitList(interp,p,&npar,&pp) != TCL_OK) {
    fprintf(stderr,"%s\n",interp->result);
    exit(1);
  }
  for (i=0;i<npar;i++) {
    if (Tcl_SplitList(interp,pp[i],&npar2,&pp2) != TCL_OK) {
      fprintf(stderr,"%s\n",interp->result);
      exit(1);
    }
    if (npar2 != 4)
       TclError(interp,"invalid number of parameters in 'values'"); 
    strcpy(name[i+1],pp2[0]);
    if (Tcl_GetDouble(interp,pp2[1],&val[i+1]) != TCL_OK)
       TclError(interp,"getdouble(1)");
    if (Tcl_GetDouble(interp,pp2[2],&scal[i+1]) != TCL_OK)
       TclError(interp,"getdouble(2)");    
    if (Tcl_GetInt(interp,pp2[3],&used[i+1]) != TCL_OK)
       TclError(interp,"getint(3)");
    free(pp2);
  }
  free(pp);
  if (!strcmp(method,"simplex")) {
    simplex(func,npar,used,val,scal);
  } else {
    return TclError(interp,"fit: unknown method '%s' (known method: simplex)",method);
  }
  return TCL_OK;
}
示例#4
0
文件: tclFCmd.c 项目: smh377/tcl
static int
FileForceOption(
    Tcl_Interp *interp,		/* Interp, for error return. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[],	/* Argument strings.  First command line
				 * option, if it exists, begins at 0. */
    int *forcePtr)		/* If the "-force" was specified, *forcePtr is
				 * filled with 1, otherwise with 0. */
{
    int force, i, idx;
    static const char *const options[] = {
	"-force", "--", NULL
    };

    force = 0;
    for (i = 0; i < objc; i++) {
	if (TclGetString(objv[i])[0] != '-') {
	    break;
	}
	if (Tcl_GetIndexFromObj(interp, objv[i], options, "option", TCL_EXACT,
		&idx) != TCL_OK) {
	    return -1;
	}
	if (idx == 0 /* -force */) {
	    force = 1;
	} else { /* -- */
	    i++;
	    break;
	}
    }
    *forcePtr = force;
    return i;
}
示例#5
0
文件: tclFCmd.c 项目: smh377/tcl
int
TclFileReadLinkCmd(
    ClientData clientData,
    Tcl_Interp *interp,
    int objc,
    Tcl_Obj *const objv[])
{
    Tcl_Obj *contents;

    if (objc != 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "name");
	return TCL_ERROR;
    }

    if (Tcl_FSConvertToPathType(interp, objv[1]) != TCL_OK) {
	return TCL_ERROR;
    }

    contents = Tcl_FSLink(objv[1], NULL, 0);

    if (contents == NULL) {
	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
		"could not read link \"%s\": %s",
		TclGetString(objv[1]), Tcl_PosixError(interp)));
	return TCL_ERROR;
    }
    Tcl_SetObjResult(interp, contents);
    Tcl_DecrRefCount(contents);
    return TCL_OK;
}
示例#6
0
文件: tclOOBasic.c 项目: ershov/tcl
int
TclOONextObjCmd(
    ClientData clientData,
    Tcl_Interp *interp,
    int objc,
    Tcl_Obj *const *objv)
{
    Interp *iPtr = (Interp *) interp;
    CallFrame *framePtr = iPtr->varFramePtr;
    Tcl_ObjectContext context;

    /*
     * Start with sanity checks on the calling context to make sure that we
     * are invoked from a suitable method context. If so, we can safely
     * retrieve the handle to the object call context.
     */

    if (framePtr == NULL || !(framePtr->isProcCallFrame & FRAME_IS_METHOD)) {
        Tcl_SetObjResult(interp, Tcl_ObjPrintf(
                             "%s may only be called from inside a method",
                             TclGetString(objv[0])));
        Tcl_SetErrorCode(interp, "TCL", "OO", "CONTEXT_REQUIRED", NULL);
        return TCL_ERROR;
    }
    context = framePtr->clientData;

    /*
     * Invoke the (advanced) method call context in the caller context. Note
     * that this is like [uplevel 1] and not [eval].
     */

    TclNRAddCallback(interp, NextRestoreFrame, framePtr, NULL,NULL,NULL);
    iPtr->varFramePtr = framePtr->callerVarPtr;
    return TclNRObjectContextInvokeNext(interp, context, objc, objv, 1);
}
示例#7
0
文件: tclOOBasic.c 项目: ershov/tcl
static int
FinalizeEval(
    ClientData data[],
    Tcl_Interp *interp,
    int result)
{
    if (result == TCL_ERROR) {
        Object *oPtr = data[0];
        const char *namePtr;

        if (oPtr) {
            namePtr = TclGetString(TclOOObjectName(interp, oPtr));
        } else {
            namePtr = "my";
        }

        Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
                                     "\n    (in \"%s eval\" script line %d)",
                                     namePtr, Tcl_GetErrorLine(interp)));
    }

    /*
     * Restore the previous "current" namespace.
     */

    TclPopStackFrame(interp);
    return result;
}
示例#8
0
文件: tclOOBasic.c 项目: ershov/tcl
int
TclOO_Class_New(
    ClientData clientData,	/* Ignored. */
    Tcl_Interp *interp,		/* Interpreter in which to create the object;
				 * also used for error reporting. */
    Tcl_ObjectContext context,	/* The object/call context. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const *objv)	/* The actual arguments. */
{
    Object *oPtr = (Object *) Tcl_ObjectContextObject(context);

    /*
     * Sanity check; should not be possible to invoke this method on a
     * non-class.
     */

    if (oPtr->classPtr == NULL) {
        Tcl_Obj *cmdnameObj = TclOOObjectName(interp, oPtr);

        Tcl_SetObjResult(interp, Tcl_ObjPrintf(
                             "object \"%s\" is not a class", TclGetString(cmdnameObj)));
        Tcl_SetErrorCode(interp, "TCL", "OO", "INSTANTIATE_NONCLASS", NULL);
        return TCL_ERROR;
    }

    /*
     * Make the object and return its name.
     */

    return TclNRNewObjectInstance(interp, (Tcl_Class) oPtr->classPtr,
                                  NULL, NULL, objc, objv, Tcl_ObjectContextSkippedArgs(context),
                                  AddConstructionFinalizer(interp));
}
示例#9
0
void
Tcl_RegExpRange(
    Tcl_RegExp re,		/* Compiled regular expression that has been
				 * passed to Tcl_RegExpExec. */
    int index,			/* 0 means give the range of the entire match,
				 * > 0 means give the range of a matching
				 * subrange. */
    const char **startPtr,	/* Store address of first character in
				 * (sub-)range here. */
    const char **endPtr)	/* Store address of character just after last
				 * in (sub-)range here. */
{
    TclRegexp *regexpPtr = (TclRegexp *) re;
    const char *string;

    if ((size_t) index > regexpPtr->re.re_nsub) {
	*startPtr = *endPtr = NULL;
    } else if (regexpPtr->matches[index].rm_so < 0) {
	*startPtr = *endPtr = NULL;
    } else {
	if (regexpPtr->objPtr) {
	    string = TclGetString(regexpPtr->objPtr);
	} else {
	    string = regexpPtr->string;
	}
	*startPtr = Tcl_UtfAtIndex(string, regexpPtr->matches[index].rm_so);
	*endPtr = Tcl_UtfAtIndex(string, regexpPtr->matches[index].rm_eo);
    }
}
	/* ARGSUSED */
int
Tcl_FblockedObjCmd(
    ClientData unused,		/* Not used. */
    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{
    Tcl_Channel chan;
    int mode;

    if (objc != 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "channelId");
	return TCL_ERROR;
    }

    if (TclGetChannelFromObj(interp, objv[1], &chan, &mode, 0) != TCL_OK) {
	return TCL_ERROR;
    }
    if ((mode & TCL_READABLE) == 0) {
	Tcl_AppendResult(interp, "channel \"", TclGetString(objv[1]),
		"\" wasn't opened for reading", NULL);
	return TCL_ERROR;
    }

    Tcl_SetObjResult(interp, Tcl_NewBooleanObj(Tcl_InputBlocked(chan)));
    return TCL_OK;
}
示例#11
0
int
Itcl_SelfCmd(
    ClientData clientData,
    Tcl_Interp *interp,
    int objc,
    Tcl_Obj *const *objv)
{
    Interp *iPtr = (Interp *) interp;
    CallFrame *framePtr = iPtr->varFramePtr;
    CallContext *contextPtr;


    if (framePtr == NULL || !(framePtr->isProcCallFrame & FRAME_IS_METHOD)) {
        Tcl_AppendResult(interp, TclGetString(objv[0]),
                " may only be called from inside a method", NULL);
        return TCL_ERROR;
    }

    contextPtr = framePtr->clientData;

    if (objc == 1) {
        Tcl_SetObjResult(interp, Itcl_TclOOObjectName(interp, contextPtr->oPtr));
        return TCL_OK;
    }
    return TCL_ERROR;
}
示例#12
0
文件: tclTimer.c 项目: smh377/tcl
static AfterInfo *
GetAfterEvent(
    AfterAssocData *assocPtr,	/* Points to "after"-related information for
				 * this interpreter. */
    Tcl_Obj *commandPtr)
{
    const char *cmdString;	/* Textual identifier for after event, such as
				 * "after#6". */
    AfterInfo *afterPtr;
    int id;
    char *end;

    cmdString = TclGetString(commandPtr);
    if (strncmp(cmdString, "after#", 6) != 0) {
	return NULL;
    }
    cmdString += 6;
    id = strtoul(cmdString, &end, 10);
    if ((end == cmdString) || (*end != 0)) {
	return NULL;
    }
    for (afterPtr = assocPtr->firstAfterPtr; afterPtr != NULL;
	    afterPtr = afterPtr->nextPtr) {
	if (afterPtr->id == id) {
	    return afterPtr;
	}
    }
    return NULL;
}
示例#13
0
int
TclGetCompletionCodeFromObj(
    Tcl_Interp *interp,		/* Current interpreter. */
    Tcl_Obj *value,
    int *codePtr)		/* Argument objects. */
{
    static const char *const returnCodes[] = {
	"ok", "error", "return", "break", "continue", NULL
    };

    if ((value->typePtr != &indexType)
	    && TclGetIntFromObj(NULL, value, codePtr) == TCL_OK) {
	return TCL_OK;
    }
    if (Tcl_GetIndexFromObj(NULL, value, returnCodes, NULL, TCL_EXACT,
	    codePtr) == TCL_OK) {
	return TCL_OK;
    }

    /*
     * Value is not a legal completion code.
     */

    if (interp != NULL) {
	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
		"bad completion code \"%s\": must be"
		" ok, error, return, break, continue, or an integer",
		TclGetString(value)));
	Tcl_SetErrorCode(interp, "TCL", "RESULT", "ILLEGAL_CODE", NULL);
    }
    return TCL_ERROR;
}
	/* ARGSUSED */
int
Tcl_FlushObjCmd(
    ClientData dummy,		/* Not used. */
    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{
    Tcl_Obj *chanObjPtr;
    Tcl_Channel chan;		/* The channel to flush on. */
    int mode;

    if (objc != 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "channelId");
	return TCL_ERROR;
    }
    chanObjPtr = objv[1];
    if (TclGetChannelFromObj(interp, chanObjPtr, &chan, &mode, 0) != TCL_OK) {
	return TCL_ERROR;
    }
    if ((mode & TCL_WRITABLE) == 0) {
	Tcl_AppendResult(interp, "channel \"", TclGetString(chanObjPtr),
		"\" wasn't opened for writing", NULL);
	return TCL_ERROR;
    }

    if (Tcl_Flush(chan) != TCL_OK) {
	/*
	 * TIP #219.
	 * Capture error messages put by the driver into the bypass area and
	 * put them into the regular interpreter result. Fall back to the
	 * regular message if nothing was found in the bypass.
	 */

	if (!TclChanCaughtErrorBypass(interp, chan)) {
	    Tcl_AppendResult(interp, "error flushing \"",
		    TclGetString(chanObjPtr), "\": ",
		    Tcl_PosixError(interp), NULL);
	}
	return TCL_ERROR;
    }
    return TCL_OK;
}
示例#15
0
文件: tclOOBasic.c 项目: ershov/tcl
int
TclOO_Class_Create(
    ClientData clientData,	/* Ignored. */
    Tcl_Interp *interp,		/* Interpreter in which to create the object;
				 * also used for error reporting. */
    Tcl_ObjectContext context,	/* The object/call context. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const *objv)	/* The actual arguments. */
{
    Object *oPtr = (Object *) Tcl_ObjectContextObject(context);
    const char *objName;
    int len;

    /*
     * Sanity check; should not be possible to invoke this method on a
     * non-class.
     */

    if (oPtr->classPtr == NULL) {
        Tcl_Obj *cmdnameObj = TclOOObjectName(interp, oPtr);

        Tcl_SetObjResult(interp, Tcl_ObjPrintf(
                             "object \"%s\" is not a class", TclGetString(cmdnameObj)));
        Tcl_SetErrorCode(interp, "TCL", "OO", "INSTANTIATE_NONCLASS", NULL);
        return TCL_ERROR;
    }

    /*
     * Check we have the right number of (sensible) arguments.
     */

    if (objc - Tcl_ObjectContextSkippedArgs(context) < 1) {
        Tcl_WrongNumArgs(interp, Tcl_ObjectContextSkippedArgs(context), objv,
                         "objectName ?arg ...?");
        return TCL_ERROR;
    }
    objName = Tcl_GetStringFromObj(
                  objv[Tcl_ObjectContextSkippedArgs(context)], &len);
    if (len == 0) {
        Tcl_SetObjResult(interp, Tcl_NewStringObj(
                             "object name must not be empty", -1));
        Tcl_SetErrorCode(interp, "TCL", "OO", "EMPTY_NAME", NULL);
        return TCL_ERROR;
    }

    /*
     * Make the object and return its name.
     */

    return TclNRNewObjectInstance(interp, (Tcl_Class) oPtr->classPtr,
                                  objName, NULL, objc, objv,
                                  Tcl_ObjectContextSkippedArgs(context)+1,
                                  AddConstructionFinalizer(interp));
}
	/* ARGSUSED */
int
Tcl_SeekObjCmd(
    ClientData clientData,	/* Not used. */
    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{
    Tcl_Channel chan;		/* The channel to tell on. */
    Tcl_WideInt offset;		/* Where to seek? */
    int mode;			/* How to seek? */
    Tcl_WideInt result;		/* Of calling Tcl_Seek. */
    int optionIndex;
    static const char *originOptions[] = {
	"start", "current", "end", NULL
    };
    static int modeArray[] = {SEEK_SET, SEEK_CUR, SEEK_END};

    if ((objc != 3) && (objc != 4)) {
	Tcl_WrongNumArgs(interp, 1, objv, "channelId offset ?origin?");
	return TCL_ERROR;
    }
    if (TclGetChannelFromObj(interp, objv[1], &chan, NULL, 0) != TCL_OK) {
	return TCL_ERROR;
    }
    if (Tcl_GetWideIntFromObj(interp, objv[2], &offset) != TCL_OK) {
	return TCL_ERROR;
    }
    mode = SEEK_SET;
    if (objc == 4) {
	if (Tcl_GetIndexFromObj(interp, objv[3], originOptions, "origin", 0,
		&optionIndex) != TCL_OK) {
	    return TCL_ERROR;
	}
	mode = modeArray[optionIndex];
    }

    result = Tcl_Seek(chan, offset, mode);
    if (result == Tcl_LongAsWide(-1)) {
	/*
	 * TIP #219.
	 * Capture error messages put by the driver into the bypass area and
	 * put them into the regular interpreter result. Fall back to the
	 * regular message if nothing was found in the bypass.
	 */
	if (!TclChanCaughtErrorBypass(interp, chan)) {
	    Tcl_AppendResult(interp, "error during seek on \"",
		    TclGetString(objv[1]), "\": ",
		    Tcl_PosixError(interp), NULL);
	}
	return TCL_ERROR;
    }
    return TCL_OK;
}
示例#17
0
ClientData
TclNativeCreateNativeRep(
    Tcl_Obj *pathPtr)
{
    char *nativePathPtr;
    const char *str;
    Tcl_DString ds;
    Tcl_Obj *validPathPtr;
    size_t len;

    if (TclFSCwdIsNative()) {
	/*
	 * The cwd is native, which means we can use the translated path
	 * without worrying about normalization (this will also usually be
	 * shorter so the utf-to-external conversion will be somewhat faster).
	 */

	validPathPtr = Tcl_FSGetTranslatedPath(NULL, pathPtr);
	if (validPathPtr == NULL) {
	    return NULL;
	}
    } else {
	/*
	 * Make sure the normalized path is set.
	 */

	validPathPtr = Tcl_FSGetNormalizedPath(NULL, pathPtr);
	if (validPathPtr == NULL) {
	    return NULL;
	}
	Tcl_IncrRefCount(validPathPtr);
    }

    str = TclGetString(validPathPtr);
    len = validPathPtr->length;
    Tcl_UtfToExternalDString(NULL, str, len, &ds);
    len = Tcl_DStringLength(&ds) + sizeof(char);
    if (strlen(Tcl_DStringValue(&ds)) < len - sizeof(char)) {
	/* See bug [3118489]: NUL in filenames */
	Tcl_DecrRefCount(validPathPtr);
	Tcl_DStringFree(&ds);
	return NULL;
    }
    Tcl_DecrRefCount(validPathPtr);
    nativePathPtr = ckalloc(len);
    memcpy(nativePathPtr, Tcl_DStringValue(&ds), (size_t) len);

    Tcl_DStringFree(&ds);
    return nativePathPtr;
}
示例#18
0
文件: tclFCmd.c 项目: smh377/tcl
static Tcl_Obj *
FileBasename(
    Tcl_Interp *interp,		/* Interp, for error return. */
    Tcl_Obj *pathPtr)		/* Path whose basename to extract. */
{
    int objc;
    Tcl_Obj *splitPtr;
    Tcl_Obj *resultPtr = NULL;

    splitPtr = Tcl_FSSplitPath(pathPtr, &objc);
    Tcl_IncrRefCount(splitPtr);

    if (objc != 0) {
	if ((objc == 1) && (*TclGetString(pathPtr) == '~')) {
	    Tcl_DecrRefCount(splitPtr);
	    if (Tcl_FSConvertToPathType(interp, pathPtr) != TCL_OK) {
		return NULL;
	    }
	    splitPtr = Tcl_FSSplitPath(pathPtr, &objc);
	    Tcl_IncrRefCount(splitPtr);
	}

	/*
	 * Return the last component, unless it is the only component, and it
	 * is the root of an absolute path.
	 */

	if (objc > 0) {
	    Tcl_ListObjIndex(NULL, splitPtr, objc-1, &resultPtr);
	    if ((objc == 1) &&
		    (Tcl_FSGetPathType(resultPtr) != TCL_PATH_RELATIVE)) {
		resultPtr = NULL;
	    }
	}
    }
    if (resultPtr == NULL) {
	resultPtr = Tcl_NewObj();
    }
    Tcl_IncrRefCount(resultPtr);
    Tcl_DecrRefCount(splitPtr);
    return resultPtr;
}
	/* ARGSUSED */
int
Tcl_ExecObjCmd(
    ClientData dummy,		/* Not used. */
    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{
    /*
     * This function generates an argv array for the string arguments. It
     * starts out with stack-allocated space but uses dynamically-allocated
     * storage if needed.
     */

    Tcl_Obj *resultPtr;
    const char **argv;
    char *string;
    Tcl_Channel chan;
    int argc, background, i, index, keepNewline, result, skip, length;
    int ignoreStderr;
    static const char *options[] = {
	"-ignorestderr", "-keepnewline", "--", NULL
    };
    enum options {
	EXEC_IGNORESTDERR, EXEC_KEEPNEWLINE, EXEC_LAST
    };

    /*
     * Check for any leading option arguments.
     */

    keepNewline = 0;
    ignoreStderr = 0;
    for (skip = 1; skip < objc; skip++) {
	string = TclGetString(objv[skip]);
	if (string[0] != '-') {
	    break;
	}
	if (Tcl_GetIndexFromObj(interp, objv[skip], options, "switch",
		TCL_EXACT, &index) != TCL_OK) {
	    return TCL_ERROR;
	}
	if (index == EXEC_KEEPNEWLINE) {
	    keepNewline = 1;
	} else if (index == EXEC_IGNORESTDERR) {
	    ignoreStderr = 1;
	} else {
	    skip++;
	    break;
	}
    }
    if (objc <= skip) {
	Tcl_WrongNumArgs(interp, 1, objv, "?switches? arg ?arg ...?");
	return TCL_ERROR;
    }

    /*
     * See if the command is to be run in background.
     */

    background = 0;
    string = TclGetString(objv[objc - 1]);
    if ((string[0] == '&') && (string[1] == '\0')) {
	objc--;
	background = 1;
    }

    /*
     * Create the string argument array "argv". Make sure argv is large enough
     * to hold the argc arguments plus 1 extra for the zero end-of-argv word.
     */

    argc = objc - skip;
    argv = (const char **)
	    TclStackAlloc(interp, (unsigned)(argc + 1) * sizeof(char *));

    /*
     * Copy the string conversions of each (post option) object into the
     * argument vector.
     */

    for (i = 0; i < argc; i++) {
	argv[i] = TclGetString(objv[i + skip]);
    }
    argv[argc] = NULL;
    chan = Tcl_OpenCommandChannel(interp, argc, argv, (background ? 0 :
	    (ignoreStderr ? TCL_STDOUT : TCL_STDOUT|TCL_STDERR)));

    /*
     * Free the argv array.
     */

    TclStackFree(interp, (void *)argv);

    if (chan == NULL) {
	return TCL_ERROR;
    }

    if (background) {
	/*
	 * Store the list of PIDs from the pipeline in interp's result and
	 * detach the PIDs (instead of waiting for them).
	 */

	TclGetAndDetachPids(interp, chan);
	if (Tcl_Close(interp, chan) != TCL_OK) {
	    return TCL_ERROR;
	}
	return TCL_OK;
    }

    resultPtr = Tcl_NewObj();
    if (Tcl_GetChannelHandle(chan, TCL_READABLE, NULL) == TCL_OK) {
	if (Tcl_ReadChars(chan, resultPtr, -1, 0) < 0) {
	    /*
	     * TIP #219.
	     * Capture error messages put by the driver into the bypass area
	     * and put them into the regular interpreter result. Fall back to
	     * the regular message if nothing was found in the bypass.
	     */

	    if (!TclChanCaughtErrorBypass(interp, chan)) {
		Tcl_ResetResult(interp);
		Tcl_AppendResult(interp, "error reading output from command: ",
			Tcl_PosixError(interp), NULL);
		Tcl_DecrRefCount(resultPtr);
	    }
	    return TCL_ERROR;
	}
    }

    /*
     * If the process produced anything on stderr, it will have been returned
     * in the interpreter result. It needs to be appended to the result
     * string.
     */

    result = Tcl_Close(interp, chan);
    Tcl_AppendObjToObj(resultPtr, Tcl_GetObjResult(interp));

    /*
     * If the last character of the result is a newline, then remove the
     * newline character.
     */

    if (keepNewline == 0) {
	string = TclGetStringFromObj(resultPtr, &length);
	if ((length > 0) && (string[length - 1] == '\n')) {
	    Tcl_SetObjLength(resultPtr, length - 1);
	}
    }
    Tcl_SetObjResult(interp, resultPtr);

    return result;
}
	/* ARGSUSED */
int
Tcl_ReadObjCmd(
    ClientData dummy,		/* Not used. */
    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{
    Tcl_Channel chan;		/* The channel to read from. */
    int newline, i;		/* Discard newline at end? */
    int toRead;			/* How many bytes to read? */
    int charactersRead;		/* How many characters were read? */
    int mode;			/* Mode in which channel is opened. */
    Tcl_Obj *resultPtr, *chanObjPtr;

    if ((objc != 2) && (objc != 3)) {
	Interp *iPtr;

    argerror:
	iPtr = (Interp *) interp;
	Tcl_WrongNumArgs(interp, 1, objv, "channelId ?numChars?");

	/*
	 * Do not append directly; that makes ensembles using this command as
	 * a subcommand produce the wrong message.
	 */

	iPtr->flags |= INTERP_ALTERNATE_WRONG_ARGS;
	Tcl_WrongNumArgs(interp, 1, objv, "?-nonewline? channelId");
	iPtr->flags &= ~INTERP_ALTERNATE_WRONG_ARGS;
	return TCL_ERROR;
    }

    i = 1;
    newline = 0;
    if (strcmp(TclGetString(objv[1]), "-nonewline") == 0) {
	newline = 1;
	i++;
    }

    if (i == objc) {
	goto argerror;
    }

    chanObjPtr = objv[i];
    if (TclGetChannelFromObj(interp, chanObjPtr, &chan, &mode, 0) != TCL_OK) {
	return TCL_ERROR;
    }
    if ((mode & TCL_READABLE) == 0) {
	Tcl_AppendResult(interp, "channel \"", TclGetString(chanObjPtr),
		"\" wasn't opened for reading", NULL);
	return TCL_ERROR;
    }
    i++;	/* Consumed channel name. */

    /*
     * Compute how many bytes to read, and see whether the final newline
     * should be dropped.
     */

    toRead = -1;
    if (i < objc) {
	char *arg;

	arg = TclGetString(objv[i]);
	if (isdigit(UCHAR(arg[0]))) { /* INTL: digit */
	    if (TclGetIntFromObj(interp, objv[i], &toRead) != TCL_OK) {
		return TCL_ERROR;
	    }
	} else if (strcmp(arg, "nonewline") == 0) {
	    newline = 1;
	} else {
	    Tcl_AppendResult(interp, "bad argument \"", arg,
		    "\": should be \"nonewline\"", NULL);
	    return TCL_ERROR;
	}
    }

    resultPtr = Tcl_NewObj();
    Tcl_IncrRefCount(resultPtr);
    charactersRead = Tcl_ReadChars(chan, resultPtr, toRead, 0);
    if (charactersRead < 0) {
	/*
	 * TIP #219.
	 * Capture error messages put by the driver into the bypass area and
	 * put them into the regular interpreter result. Fall back to the
	 * regular message if nothing was found in the bypass.
	 */

	if (!TclChanCaughtErrorBypass(interp, chan)) {
	    Tcl_ResetResult(interp);
	    Tcl_AppendResult(interp, "error reading \"",
		    TclGetString(chanObjPtr), "\": ",
		    Tcl_PosixError(interp), NULL);
	}
	Tcl_DecrRefCount(resultPtr);
	return TCL_ERROR;
    }

    /*
     * If requested, remove the last newline in the channel if at EOF.
     */

    if ((charactersRead > 0) && (newline != 0)) {
	char *result;
	int length;

	result = TclGetStringFromObj(resultPtr, &length);
	if (result[length - 1] == '\n') {
	    Tcl_SetObjLength(resultPtr, length - 1);
	}
    }
    Tcl_SetObjResult(interp, resultPtr);
    Tcl_DecrRefCount(resultPtr);
    return TCL_OK;
}
	/* ARGSUSED */
int
Tcl_GetsObjCmd(
    ClientData dummy,		/* Not used. */
    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{
    Tcl_Channel chan;		/* The channel to read from. */
    int lineLen;		/* Length of line just read. */
    int mode;			/* Mode in which channel is opened. */
    Tcl_Obj *linePtr, *chanObjPtr;

    if ((objc != 2) && (objc != 3)) {
	Tcl_WrongNumArgs(interp, 1, objv, "channelId ?varName?");
	return TCL_ERROR;
    }
    chanObjPtr = objv[1];
    if (TclGetChannelFromObj(interp, chanObjPtr, &chan, &mode, 0) != TCL_OK) {
	return TCL_ERROR;
    }
    if ((mode & TCL_READABLE) == 0) {
	Tcl_AppendResult(interp, "channel \"", TclGetString(chanObjPtr),
		"\" wasn't opened for reading", NULL);
	return TCL_ERROR;
    }

    linePtr = Tcl_NewObj();
    lineLen = Tcl_GetsObj(chan, linePtr);
    if (lineLen < 0) {
	if (!Tcl_Eof(chan) && !Tcl_InputBlocked(chan)) {
	    Tcl_DecrRefCount(linePtr);

	    /*
	     * TIP #219. Capture error messages put by the driver into the
	     * bypass area and put them into the regular interpreter result.
	     * Fall back to the regular message if nothing was found in the
	     * bypass.
	     */

	    if (!TclChanCaughtErrorBypass(interp, chan)) {
		Tcl_ResetResult(interp);
		Tcl_AppendResult(interp, "error reading \"",
			TclGetString(chanObjPtr), "\": ",
			Tcl_PosixError(interp), NULL);
	    }
	    return TCL_ERROR;
	}
	lineLen = -1;
    }
    if (objc == 3) {
	if (Tcl_ObjSetVar2(interp, objv[2], NULL, linePtr,
		TCL_LEAVE_ERR_MSG) == NULL) {
	    return TCL_ERROR;
	}
	Tcl_SetObjResult(interp, Tcl_NewIntObj(lineLen));
	return TCL_OK;
    } else {
	Tcl_SetObjResult(interp, linePtr);
    }
    return TCL_OK;
}
int
Tcl_FcopyObjCmd(
    ClientData dummy,		/* Not used. */
    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{
    Tcl_Channel inChan, outChan;
    int mode, i, toRead, index;
    Tcl_Obj *cmdPtr;
    static const char* switches[] = { "-size", "-command", NULL };
    enum { FcopySize, FcopyCommand };

    if ((objc < 3) || (objc > 7) || (objc == 4) || (objc == 6)) {
	Tcl_WrongNumArgs(interp, 1, objv,
		"input output ?-size size? ?-command callback?");
	return TCL_ERROR;
    }

    /*
     * Parse the channel arguments and verify that they are readable or
     * writable, as appropriate.
     */

    if (TclGetChannelFromObj(interp, objv[1], &inChan, &mode, 0) != TCL_OK) {
	return TCL_ERROR;
    }
    if ((mode & TCL_READABLE) == 0) {
	Tcl_AppendResult(interp, "channel \"", TclGetString(objv[1]),
		"\" wasn't opened for reading", NULL);
	return TCL_ERROR;
    }
    if (TclGetChannelFromObj(interp, objv[2], &outChan, &mode, 0) != TCL_OK) {
	return TCL_ERROR;
    }
    if ((mode & TCL_WRITABLE) == 0) {
	Tcl_AppendResult(interp, "channel \"", TclGetString(objv[2]),
		"\" wasn't opened for writing", NULL);
	return TCL_ERROR;
    }

    toRead = -1;
    cmdPtr = NULL;
    for (i = 3; i < objc; i += 2) {
	if (Tcl_GetIndexFromObj(interp, objv[i], switches, "switch", 0,
		&index) != TCL_OK) {
	    return TCL_ERROR;
	}
	switch (index) {
	case FcopySize:
	    if (TclGetIntFromObj(interp, objv[i+1], &toRead) != TCL_OK) {
		return TCL_ERROR;
	    }
	    if (toRead<0) {
		/*
		 * Handle all negative sizes like -1, meaning 'copy all'. By
		 * resetting toRead we avoid changes in the core copying
		 * functions (which explicitly check for -1 and crash on any
		 * other negative value).
		 */
		toRead = -1;
	    }
	    break;
	case FcopyCommand:
	    cmdPtr = objv[i+1];
	    break;
	}
    }

    return TclCopyChannel(interp, inChan, outChan, toRead, cmdPtr);
}
int
Tcl_SocketObjCmd(
    ClientData notUsed,		/* Not used. */
    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{
    static const char *socketOptions[] = {
	"-async", "-myaddr", "-myport","-server", NULL
    };
    enum socketOptions {
	SKT_ASYNC, SKT_MYADDR, SKT_MYPORT, SKT_SERVER
    };
    int optionIndex, a, server = 0, port, myport = 0, async = 0;
    char *host, *script = NULL, *myaddr = NULL;
    Tcl_Channel chan;

    if (TclpHasSockets(interp) != TCL_OK) {
	return TCL_ERROR;
    }

    for (a = 1; a < objc; a++) {
	const char *arg = Tcl_GetString(objv[a]);

	if (arg[0] != '-') {
	    break;
	}
	if (Tcl_GetIndexFromObj(interp, objv[a], socketOptions, "option",
		TCL_EXACT, &optionIndex) != TCL_OK) {
	    return TCL_ERROR;
	}
	switch ((enum socketOptions) optionIndex) {
	case SKT_ASYNC:
	    if (server == 1) {
		Tcl_AppendResult(interp,
			"cannot set -async option for server sockets", NULL);
		return TCL_ERROR;
	    }
	    async = 1;
	    break;
	case SKT_MYADDR:
	    a++;
	    if (a >= objc) {
		Tcl_AppendResult(interp,
			"no argument given for -myaddr option", NULL);
		return TCL_ERROR;
	    }
	    myaddr = TclGetString(objv[a]);
	    break;
	case SKT_MYPORT: {
	    char *myPortName;

	    a++;
	    if (a >= objc) {
		Tcl_AppendResult(interp,
			"no argument given for -myport option", NULL);
		return TCL_ERROR;
	    }
	    myPortName = TclGetString(objv[a]);
	    if (TclSockGetPort(interp, myPortName, "tcp", &myport) != TCL_OK) {
		return TCL_ERROR;
	    }
	    break;
	}
	case SKT_SERVER:
	    if (async == 1) {
		Tcl_AppendResult(interp,
			"cannot set -async option for server sockets", NULL);
		return TCL_ERROR;
	    }
	    server = 1;
	    a++;
	    if (a >= objc) {
		Tcl_AppendResult(interp,
			"no argument given for -server option", NULL);
		return TCL_ERROR;
	    }
	    script = TclGetString(objv[a]);
	    break;
	default:
	    Tcl_Panic("Tcl_SocketObjCmd: bad option index to SocketOptions");
	}
    }
    if (server) {
	host = myaddr;		/* NULL implies INADDR_ANY */
	if (myport != 0) {
	    Tcl_AppendResult(interp, "option -myport is not valid for servers",
		    NULL);
	    return TCL_ERROR;
	}
    } else if (a < objc) {
	host = TclGetString(objv[a]);
	a++;
    } else {
	Interp *iPtr;

    wrongNumArgs:
	iPtr = (Interp *) interp;
	Tcl_WrongNumArgs(interp, 1, objv,
		"?-myaddr addr? ?-myport myport? ?-async? host port");
	iPtr->flags |= INTERP_ALTERNATE_WRONG_ARGS;
	Tcl_WrongNumArgs(interp, 1, objv,
		"-server command ?-myaddr addr? port");
	iPtr->flags &= ~INTERP_ALTERNATE_WRONG_ARGS;
	return TCL_ERROR;
    }

    if (a == objc-1) {
	if (TclSockGetPort(interp, TclGetString(objv[a]), "tcp",
		&port) != TCL_OK) {
	    return TCL_ERROR;
	}
    } else {
	goto wrongNumArgs;
    }

    if (server) {
	AcceptCallback *acceptCallbackPtr = (AcceptCallback *)
		ckalloc((unsigned) sizeof(AcceptCallback));
	unsigned len = strlen(script) + 1;
	char *copyScript = ckalloc(len);

	memcpy(copyScript, script, len);
	acceptCallbackPtr->script = copyScript;
	acceptCallbackPtr->interp = interp;
	chan = Tcl_OpenTcpServer(interp, port, host, AcceptCallbackProc,
		acceptCallbackPtr);
	if (chan == NULL) {
	    ckfree(copyScript);
	    ckfree((char *) acceptCallbackPtr);
	    return TCL_ERROR;
	}

	/*
	 * Register with the interpreter to let us know when the interpreter
	 * is deleted (by having the callback set the interp field of the
	 * acceptCallbackPtr's structure to NULL). This is to avoid trying to
	 * eval the script in a deleted interpreter.
	 */

	RegisterTcpServerInterpCleanup(interp, acceptCallbackPtr);

	/*
	 * Register a close callback. This callback will inform the
	 * interpreter (if it still exists) that this channel does not need to
	 * be informed when the interpreter is deleted.
	 */

	Tcl_CreateCloseHandler(chan, TcpServerCloseProc, acceptCallbackPtr);
    } else {
	chan = Tcl_OpenTcpClient(interp, port, host, myaddr, myport, async);
	if (chan == NULL) {
	    return TCL_ERROR;
	}
    }
    Tcl_RegisterChannel(interp, chan);
    Tcl_AppendResult(interp, Tcl_GetChannelName(chan), NULL);

    return TCL_OK;
}
示例#24
0
文件: tclUnixChan.c 项目: smh377/tcl
Tcl_Channel
TclpOpenFileChannel(
    Tcl_Interp *interp,		/* Interpreter for error reporting; can be
				 * NULL. */
    Tcl_Obj *pathPtr,		/* Name of file to open. */
    int mode,			/* POSIX open mode. */
    int permissions)		/* If the open involves creating a file, with
				 * what modes to create it? */
{
    int fd, channelPermissions;
    FileState *fsPtr;
    const char *native, *translation;
    char channelName[16 + TCL_INTEGER_SPACE];
    const Tcl_ChannelType *channelTypePtr;

    switch (mode & (O_RDONLY | O_WRONLY | O_RDWR)) {
    case O_RDONLY:
	channelPermissions = TCL_READABLE;
	break;
    case O_WRONLY:
	channelPermissions = TCL_WRITABLE;
	break;
    case O_RDWR:
	channelPermissions = (TCL_READABLE | TCL_WRITABLE);
	break;
    default:
	/*
	 * This may occurr if modeString was "", for example.
	 */

	Tcl_Panic("TclpOpenFileChannel: invalid mode value");
	return NULL;
    }

    native = Tcl_FSGetNativePath(pathPtr);
    if (native == NULL) {
	if (interp != (Tcl_Interp *) NULL) {
	    Tcl_AppendResult(interp, "couldn't open \"",
	    TclGetString(pathPtr), "\": filename is invalid on this platform",
	    NULL);
	}
	return NULL;
    }

#ifdef DJGPP
    SET_BITS(mode, O_BINARY);
#endif

    fd = TclOSopen(native, mode, permissions);

    if (fd < 0) {
	if (interp != NULL) {
	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
		    "couldn't open \"%s\": %s",
		    TclGetString(pathPtr), Tcl_PosixError(interp)));
	}
	return NULL;
    }

    /*
     * Set close-on-exec flag on the fd so that child processes will not
     * inherit this fd.
     */

    fcntl(fd, F_SETFD, FD_CLOEXEC);

    sprintf(channelName, "file%d", fd);

#ifdef SUPPORTS_TTY
    if (strcmp(native, "/dev/tty") != 0 && isatty(fd)) {
	/*
	 * Initialize the serial port to a set of sane parameters. Especially
	 * important if the remote device is set to echo and the serial port
	 * driver was also set to echo -- as soon as a char were sent to the
	 * serial port, the remote device would echo it, then the serial
	 * driver would echo it back to the device, etc.
	 *
	 * Note that we do not do this if we're dealing with /dev/tty itself,
	 * as that tends to cause Bad Things To Happen when you're working
	 * interactively. Strictly a better check would be to see if the FD
	 * being set up is a device and has the same major/minor as the
	 * initial std FDs (beware reopening!) but that's nearly as messy.
	 */

	translation = "auto crlf";
	channelTypePtr = &ttyChannelType;
	TtyInit(fd);
    } else
#endif	/* SUPPORTS_TTY */
    {
	translation = NULL;
	channelTypePtr = &fileChannelType;
    }

    fsPtr = ckalloc(sizeof(FileState));
    fsPtr->validMask = channelPermissions | TCL_EXCEPTION;
    fsPtr->fd = fd;

    fsPtr->channel = Tcl_CreateChannel(channelTypePtr, channelName,
	    fsPtr, channelPermissions);

    if (translation != NULL) {
	/*
	 * Gotcha. Most modems need a "\r" at the end of the command sequence.
	 * If you just send "at\n", the modem will not respond with "OK"
	 * because it never got a "\r" to actually invoke the command. So, by
	 * default, newlines are translated to "\r\n" on output to avoid "bug"
	 * reports that the serial port isn't working.
	 */

	if (Tcl_SetChannelOption(interp, fsPtr->channel, "-translation",
		translation) != TCL_OK) {
	    Tcl_Close(NULL, fsPtr->channel);
	    return NULL;
	}
    }

    return fsPtr->channel;
}
示例#25
0
	/* ARGSUSED */
int
Tcl_ScanObjCmd(
    ClientData dummy,		/* Not used. */
    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{
    const char *format;
    int numVars, nconversions, totalVars = -1;
    int objIndex, offset, i, result, code;
    long value;
    const char *string, *end, *baseString;
    char op = 0;
    int width, underflow = 0;
    Tcl_WideInt wideValue;
    Tcl_UniChar ch, sch;
    Tcl_Obj **objs = NULL, *objPtr = NULL;
    int flags;
    char buf[513];		/* Temporary buffer to hold scanned number
				 * strings before they are passed to
				 * strtoul. */

    if (objc < 3) {
	Tcl_WrongNumArgs(interp, 1, objv,
		"string format ?varName ...?");
	return TCL_ERROR;
    }

    format = Tcl_GetStringFromObj(objv[2], NULL);
    numVars = objc-3;

    /*
     * Check for errors in the format string.
     */

    if (ValidateFormat(interp, format, numVars, &totalVars) == TCL_ERROR) {
	return TCL_ERROR;
    }

    /*
     * Allocate space for the result objects.
     */

    if (totalVars > 0) {
	objs = ckalloc(sizeof(Tcl_Obj *) * totalVars);
	for (i = 0; i < totalVars; i++) {
	    objs[i] = NULL;
	}
    }

    string = Tcl_GetStringFromObj(objv[1], NULL);
    baseString = string;

    /*
     * Iterate over the format string filling in the result objects until we
     * reach the end of input, the end of the format string, or there is a
     * mismatch.
     */

    objIndex = 0;
    nconversions = 0;
    while (*format != '\0') {
	int parseFlag = TCL_PARSE_NO_WHITESPACE;
	format += Tcl_UtfToUniChar(format, &ch);

	flags = 0;

	/*
	 * If we see whitespace in the format, skip whitespace in the string.
	 */

	if (Tcl_UniCharIsSpace(ch)) {
	    offset = Tcl_UtfToUniChar(string, &sch);
	    while (Tcl_UniCharIsSpace(sch)) {
		if (*string == '\0') {
		    goto done;
		}
		string += offset;
		offset = Tcl_UtfToUniChar(string, &sch);
	    }
	    continue;
	}

	if (ch != '%') {
	literal:
	    if (*string == '\0') {
		underflow = 1;
		goto done;
	    }
	    string += Tcl_UtfToUniChar(string, &sch);
	    if (ch != sch) {
		goto done;
	    }
	    continue;
	}

	format += Tcl_UtfToUniChar(format, &ch);
	if (ch == '%') {
	    goto literal;
	}

	/*
	 * Check for assignment suppression ('*') or an XPG3-style assignment
	 * ('%n$').
	 */

	if (ch == '*') {
	    flags |= SCAN_SUPPRESS;
	    format += Tcl_UtfToUniChar(format, &ch);
	} else if ((ch < 0x80) && isdigit(UCHAR(ch))) {	/* INTL: "C" locale. */
	    char *formatEnd;
	    value = strtoul(format-1, &formatEnd, 10);/* INTL: "C" locale. */
	    if (*formatEnd == '$') {
		format = formatEnd+1;
		format += Tcl_UtfToUniChar(format, &ch);
		objIndex = (int) value - 1;
	    }
	}

	/*
	 * Parse any width specifier.
	 */

	if ((ch < 0x80) && isdigit(UCHAR(ch))) {	/* INTL: "C" locale. */
	    width = (int) strtoul(format-1, (char **) &format, 10);/* INTL: "C" locale. */
	    format += Tcl_UtfToUniChar(format, &ch);
	} else {
	    width = 0;
	}

	/*
	 * Handle any size specifier.
	 */

	switch (ch) {
	case 'l':
	    if (*format == 'l') {
		flags |= SCAN_BIG;
		format += 1;
		format += Tcl_UtfToUniChar(format, &ch);
		break;
	    }
	case 'L':
	    flags |= SCAN_LONGER;
	    /*
	     * Fall through so we skip to the next character.
	     */
	case 'h':
	    format += Tcl_UtfToUniChar(format, &ch);
	}

	/*
	 * Handle the various field types.
	 */

	switch (ch) {
	case 'n':
	    if (!(flags & SCAN_SUPPRESS)) {
		objPtr = Tcl_NewIntObj(string - baseString);
		Tcl_IncrRefCount(objPtr);
		CLANG_ASSERT(objs);
		objs[objIndex++] = objPtr;
	    }
	    nconversions++;
	    continue;

	case 'd':
	    op = 'i';
	    parseFlag |= TCL_PARSE_DECIMAL_ONLY;
	    break;
	case 'i':
	    op = 'i';
	    parseFlag |= TCL_PARSE_SCAN_PREFIXES;
	    break;
	case 'o':
	    op = 'i';
	    parseFlag |= TCL_PARSE_OCTAL_ONLY | TCL_PARSE_SCAN_PREFIXES;
	    break;
	case 'x':
	case 'X':
	    op = 'i';
	    parseFlag |= TCL_PARSE_HEXADECIMAL_ONLY;
	    break;
	case 'b':
	    op = 'i';
	    parseFlag |= TCL_PARSE_BINARY_ONLY;
	    break;
	case 'u':
	    op = 'i';
	    parseFlag |= TCL_PARSE_DECIMAL_ONLY;
	    flags |= SCAN_UNSIGNED;
	    break;

	case 'f':
	case 'e':
	case 'E':
	case 'g':
	case 'G':
	    op = 'f';
	    break;

	case 's':
	    op = 's';
	    break;

	case 'c':
	    op = 'c';
	    flags |= SCAN_NOSKIP;
	    break;
	case '[':
	    op = '[';
	    flags |= SCAN_NOSKIP;
	    break;
	}

	/*
	 * At this point, we will need additional characters from the string
	 * to proceed.
	 */

	if (*string == '\0') {
	    underflow = 1;
	    goto done;
	}

	/*
	 * Skip any leading whitespace at the beginning of a field unless the
	 * format suppresses this behavior.
	 */

	if (!(flags & SCAN_NOSKIP)) {
	    while (*string != '\0') {
		offset = Tcl_UtfToUniChar(string, &sch);
		if (!Tcl_UniCharIsSpace(sch)) {
		    break;
		}
		string += offset;
	    }
	    if (*string == '\0') {
		underflow = 1;
		goto done;
	    }
	}

	/*
	 * Perform the requested scanning operation.
	 */

	switch (op) {
	case 's':
	    /*
	     * Scan a string up to width characters or whitespace.
	     */

	    if (width == 0) {
		width = ~0;
	    }
	    end = string;
	    while (*end != '\0') {
		offset = Tcl_UtfToUniChar(end, &sch);
		if (Tcl_UniCharIsSpace(sch)) {
		    break;
		}
		end += offset;
		if (--width == 0) {
		    break;
		}
	    }
	    if (!(flags & SCAN_SUPPRESS)) {
		objPtr = Tcl_NewStringObj(string, end-string);
		Tcl_IncrRefCount(objPtr);
		CLANG_ASSERT(objs);
		objs[objIndex++] = objPtr;
	    }
	    string = end;
	    break;

	case '[': {
	    CharSet cset;

	    if (width == 0) {
		width = ~0;
	    }
	    end = string;

	    format = BuildCharSet(&cset, format);
	    while (*end != '\0') {
		offset = Tcl_UtfToUniChar(end, &sch);
		if (!CharInSet(&cset, (int)sch)) {
		    break;
		}
		end += offset;
		if (--width == 0) {
		    break;
		}
	    }
	    ReleaseCharSet(&cset);

	    if (string == end) {
		/*
		 * Nothing matched the range, stop processing.
		 */
		goto done;
	    }
	    if (!(flags & SCAN_SUPPRESS)) {
		objPtr = Tcl_NewStringObj(string, end-string);
		Tcl_IncrRefCount(objPtr);
		objs[objIndex++] = objPtr;
	    }
	    string = end;

	    break;
	}
	case 'c':
	    /*
	     * Scan a single Unicode character.
	     */

	    string += Tcl_UtfToUniChar(string, &sch);
	    if (!(flags & SCAN_SUPPRESS)) {
		objPtr = Tcl_NewIntObj((int)sch);
		Tcl_IncrRefCount(objPtr);
		CLANG_ASSERT(objs);
		objs[objIndex++] = objPtr;
	    }
	    break;

	case 'i':
	    /*
	     * Scan an unsigned or signed integer.
	     */
	    objPtr = Tcl_NewLongObj(0);
	    Tcl_IncrRefCount(objPtr);
	    if (width == 0) {
		width = ~0;
	    }
	    if (TCL_OK != TclParseNumber(NULL, objPtr, NULL, string, width,
		    &end, TCL_PARSE_INTEGER_ONLY | parseFlag)) {
		Tcl_DecrRefCount(objPtr);
		if (width < 0) {
		    if (*end == '\0') {
			underflow = 1;
		    }
		} else {
		    if (end == string + width) {
			underflow = 1;
		    }
		}
		goto done;
	    }
	    string = end;
	    if (flags & SCAN_SUPPRESS) {
		Tcl_DecrRefCount(objPtr);
		break;
	    }
	    if (flags & SCAN_LONGER) {
		if (Tcl_GetWideIntFromObj(NULL, objPtr, &wideValue) != TCL_OK) {
		    wideValue = ~(Tcl_WideUInt)0 >> 1;	/* WIDE_MAX */
		    if (TclGetString(objPtr)[0] == '-') {
			wideValue++;	/* WIDE_MAX + 1 = WIDE_MIN */
		    }
		}
		if ((flags & SCAN_UNSIGNED) && (wideValue < 0)) {
		    sprintf(buf, "%" TCL_LL_MODIFIER "u",
			    (Tcl_WideUInt)wideValue);
		    Tcl_SetStringObj(objPtr, buf, -1);
		} else {
		    Tcl_SetWideIntObj(objPtr, wideValue);
		}
	    } else if (!(flags & SCAN_BIG)) {
		if (TclGetLongFromObj(NULL, objPtr, &value) != TCL_OK) {
		    if (TclGetString(objPtr)[0] == '-') {
			value = LONG_MIN;
		    } else {
			value = LONG_MAX;
		    }
		}
		if ((flags & SCAN_UNSIGNED) && (value < 0)) {
		    sprintf(buf, "%lu", value);	/* INTL: ISO digit */
		    Tcl_SetStringObj(objPtr, buf, -1);
		} else {
		    Tcl_SetLongObj(objPtr, value);
		}
	    }
	    objs[objIndex++] = objPtr;
	    break;

	case 'f':
	    /*
	     * Scan a floating point number
	     */

	    objPtr = Tcl_NewDoubleObj(0.0);
	    Tcl_IncrRefCount(objPtr);
	    if (width == 0) {
		width = ~0;
	    }
	    if (TCL_OK != TclParseNumber(NULL, objPtr, NULL, string, width,
		    &end, TCL_PARSE_DECIMAL_ONLY | TCL_PARSE_NO_WHITESPACE)) {
		Tcl_DecrRefCount(objPtr);
		if (width < 0) {
		    if (*end == '\0') {
			underflow = 1;
		    }
		} else {
		    if (end == string + width) {
			underflow = 1;
		    }
		}
		goto done;
	    } else if (flags & SCAN_SUPPRESS) {
		Tcl_DecrRefCount(objPtr);
		string = end;
	    } else {
		double dvalue;
		if (Tcl_GetDoubleFromObj(NULL, objPtr, &dvalue) != TCL_OK) {
#ifdef ACCEPT_NAN
		    if (objPtr->typePtr == &tclDoubleType) {
			dvalue = objPtr->internalRep.doubleValue;
		    } else
#endif
		    {
			Tcl_DecrRefCount(objPtr);
			goto done;
		    }
		}
		Tcl_SetDoubleObj(objPtr, dvalue);
		CLANG_ASSERT(objs);
		objs[objIndex++] = objPtr;
		string = end;
	    }
	}
示例#26
0
文件: tclConfig.c 项目: smh377/tcl
static int
QueryConfigObjCmd(
    ClientData clientData,
    Tcl_Interp *interp,
    int objc,
    struct Tcl_Obj *const *objv)
{
    QCCD *cdPtr = clientData;
    Tcl_Obj *pkgName = cdPtr->pkg;
    Tcl_Obj *pDB, *pkgDict, *val, *listPtr;
    int n, index;
    static const char *const subcmdStrings[] = {
	"get", "list", NULL
    };
    enum subcmds {
	CFG_GET, CFG_LIST
    };
    Tcl_DString conv;
    Tcl_Encoding venc = NULL;
    const char *value;

    if ((objc < 2) || (objc > 3)) {
	Tcl_WrongNumArgs(interp, 1, objv, "subcommand ?arg?");
	return TCL_ERROR;
    }
    if (Tcl_GetIndexFromObj(interp, objv[1], subcmdStrings, "subcommand", 0,
	    &index) != TCL_OK) {
	return TCL_ERROR;
    }

    pDB = GetConfigDict(interp);
    if (Tcl_DictObjGet(interp, pDB, pkgName, &pkgDict) != TCL_OK
	    || pkgDict == NULL) {
	/*
	 * Maybe a Tcl_Panic is better, because the package data has to be
	 * present.
	 */

	Tcl_SetObjResult(interp, Tcl_NewStringObj("package not known", -1));
	Tcl_SetErrorCode(interp, "TCL", "FATAL", "PKGCFG_BASE",
		TclGetString(pkgName), NULL);
	return TCL_ERROR;
    }

    switch ((enum subcmds) index) {
    case CFG_GET:
	if (objc != 3) {
	    Tcl_WrongNumArgs(interp, 2, objv, "key");
	    return TCL_ERROR;
	}

	if (Tcl_DictObjGet(interp, pkgDict, objv[2], &val) != TCL_OK
		|| val == NULL) {
	    Tcl_SetObjResult(interp, Tcl_NewStringObj("key not known", -1));
	    Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "CONFIG",
		    TclGetString(objv[2]), NULL);
	    return TCL_ERROR;
	}

	if (cdPtr->encoding) {
	    venc = Tcl_GetEncoding(interp, cdPtr->encoding);
	    if (!venc) {
		return TCL_ERROR;
	    }
	}
	/*
	 * Value is stored as-is in a byte array, see Bug [9b2e636361],
	 * so we have to decode it first.
	 */
	value = (const char *) Tcl_GetByteArrayFromObj(val, &n);
	value = Tcl_ExternalToUtfDString(venc, value, n, &conv);
	Tcl_SetObjResult(interp, Tcl_NewStringObj(value,
		Tcl_DStringLength(&conv)));
	Tcl_DStringFree(&conv);
	return TCL_OK;

    case CFG_LIST:
	if (objc != 2) {
	    Tcl_WrongNumArgs(interp, 2, objv, NULL);
	    return TCL_ERROR;
	}

	Tcl_DictObjSize(interp, pkgDict, &n);
	listPtr = Tcl_NewListObj(n, NULL);

	if (!listPtr) {
	    Tcl_SetObjResult(interp, Tcl_NewStringObj(
		    "insufficient memory to create list", -1));
	    Tcl_SetErrorCode(interp, "TCL", "MEMORY", NULL);
	    return TCL_ERROR;
	}

	if (n) {
	    Tcl_DictSearch s;
	    Tcl_Obj *key;
	    int done;

	    for (Tcl_DictObjFirst(interp, pkgDict, &s, &key, NULL, &done);
		    !done; Tcl_DictObjNext(&s, &key, NULL, &done)) {
		Tcl_ListObjAppendElement(NULL, listPtr, key);
	    }
	}

	Tcl_SetObjResult(interp, listPtr);
	return TCL_OK;

    default:
	Tcl_Panic("QueryConfigObjCmd: Unknown subcommand to 'pkgconfig'. This can't happen");
	break;
    }
    return TCL_ERROR;
}
示例#27
0
int
Tcl_GetIndexFromObjStruct(
    Tcl_Interp *interp, 	/* Used for error reporting if not NULL. */
    Tcl_Obj *objPtr,		/* Object containing the string to lookup. */
    const void *tablePtr,	/* The first string in the table. The second
				 * string will be at this address plus the
				 * offset, the third plus the offset again,
				 * etc. The last entry must be NULL and there
				 * must not be duplicate entries. */
    int offset,			/* The number of bytes between entries */
    const char *msg,		/* Identifying word to use in error
				 * messages. */
    int flags,			/* 0 or TCL_EXACT */
    int *indexPtr)		/* Place to store resulting integer index. */
{
    int index, idx, numAbbrev;
    char *key, *p1;
    const char *p2;
    const char *const *entryPtr;
    Tcl_Obj *resultPtr;
    IndexRep *indexRep;

    /* Protect against invalid values, like -1 or 0. */
    if (offset < (int)sizeof(char *)) {
	offset = (int)sizeof(char *);
    }
    /*
     * See if there is a valid cached result from a previous lookup.
     */

    if (objPtr->typePtr == &indexType) {
	indexRep = objPtr->internalRep.twoPtrValue.ptr1;
	if (indexRep->tablePtr==tablePtr && indexRep->offset==offset) {
	    *indexPtr = indexRep->index;
	    return TCL_OK;
	}
    }

    /*
     * Lookup the value of the object in the table. Accept unique
     * abbreviations unless TCL_EXACT is set in flags.
     */

    key = TclGetString(objPtr);
    index = -1;
    numAbbrev = 0;

    /*
     * Scan the table looking for one of:
     *  - An exact match (always preferred)
     *  - A single abbreviation (allowed depending on flags)
     *  - Several abbreviations (never allowed, but overridden by exact match)
     */

    for (entryPtr = tablePtr, idx = 0; *entryPtr != NULL;
	    entryPtr = NEXT_ENTRY(entryPtr, offset), idx++) {
	for (p1 = key, p2 = *entryPtr; *p1 == *p2; p1++, p2++) {
	    if (*p1 == '\0') {
		index = idx;
		goto done;
	    }
	}
	if (*p1 == '\0') {
	    /*
	     * The value is an abbreviation for this entry. Continue checking
	     * other entries to make sure it's unique. If we get more than one
	     * unique abbreviation, keep searching to see if there is an exact
	     * match, but remember the number of unique abbreviations and
	     * don't allow either.
	     */

	    numAbbrev++;
	    index = idx;
	}
    }

    /*
     * Check if we were instructed to disallow abbreviations.
     */

    if ((flags & TCL_EXACT) || (key[0] == '\0') || (numAbbrev != 1)) {
	goto error;
    }

  done:
    /*
     * Cache the found representation. Note that we want to avoid allocating a
     * new internal-rep if at all possible since that is potentially a slow
     * operation.
     */

    if (objPtr->typePtr == &indexType) {
 	indexRep = objPtr->internalRep.twoPtrValue.ptr1;
    } else {
	TclFreeIntRep(objPtr);
 	indexRep = (IndexRep *) ckalloc(sizeof(IndexRep));
 	objPtr->internalRep.twoPtrValue.ptr1 = indexRep;
 	objPtr->typePtr = &indexType;
    }
    indexRep->tablePtr = (void *) tablePtr;
    indexRep->offset = offset;
    indexRep->index = index;

    *indexPtr = index;
    return TCL_OK;

  error:
    if (interp != NULL) {
	/*
	 * Produce a fancy error message.
	 */

	int count = 0;

	TclNewObj(resultPtr);
	Tcl_SetObjResult(interp, resultPtr);
	entryPtr = tablePtr;
	while ((*entryPtr != NULL) && !**entryPtr) {
	    entryPtr = NEXT_ENTRY(entryPtr, offset);
	}
	Tcl_AppendStringsToObj(resultPtr, (numAbbrev > 1) &&
		!(flags & TCL_EXACT) ? "ambiguous " : "bad ", msg, " \"", key,
		"\": must be ", *entryPtr, NULL);
	entryPtr = NEXT_ENTRY(entryPtr, offset);
	while (*entryPtr != NULL) {
	    if (*NEXT_ENTRY(entryPtr, offset) == NULL) {
		Tcl_AppendStringsToObj(resultPtr, ((count > 0) ? "," : ""),
			" or ", *entryPtr, NULL);
	    } else if (**entryPtr) {
		Tcl_AppendStringsToObj(resultPtr, ", ", *entryPtr, NULL);
		count++;
	    }
	    entryPtr = NEXT_ENTRY(entryPtr, offset);
	}
	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "INDEX", msg, key, NULL);
    }
    return TCL_ERROR;
}
	/* ARGSUSED */
int
Tcl_OpenObjCmd(
    ClientData notUsed,		/* Not used. */
    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{
    int pipeline, prot;
    const char *modeString, *what;
    Tcl_Channel chan;

    if ((objc < 2) || (objc > 4)) {
	Tcl_WrongNumArgs(interp, 1, objv, "fileName ?access? ?permissions?");
	return TCL_ERROR;
    }
    prot = 0666;
    if (objc == 2) {
	modeString = "r";
    } else {
	modeString = TclGetString(objv[2]);
	if (objc == 4) {
	    char *permString = TclGetString(objv[3]);
	    int code = TCL_ERROR;
	    int scanned = TclParseAllWhiteSpace(permString, -1);

	    /* Support legacy octal numbers */
	    if ((permString[scanned] == '0')
		    && (permString[scanned+1] >= '0')
		    && (permString[scanned+1] <= '7')) {

		Tcl_Obj *permObj;

		TclNewLiteralStringObj(permObj, "0o");
		Tcl_AppendToObj(permObj, permString+scanned+1, -1);
		code = TclGetIntFromObj(NULL, permObj, &prot);
		Tcl_DecrRefCount(permObj);
	    }

	    if ((code == TCL_ERROR)
		    && TclGetIntFromObj(interp, objv[3], &prot) != TCL_OK) {
		return TCL_ERROR;
	    }
	}
    }

    pipeline = 0;
    what = TclGetString(objv[1]);
    if (what[0] == '|') {
	pipeline = 1;
    }

    /*
     * Open the file or create a process pipeline.
     */

    if (!pipeline) {
	chan = Tcl_FSOpenFileChannel(interp, objv[1], modeString, prot);
    } else {
	int mode, seekFlag, cmdObjc, binary;
	const char **cmdArgv;

	if (Tcl_SplitList(interp, what+1, &cmdObjc, &cmdArgv) != TCL_OK) {
	    return TCL_ERROR;
	}

	mode = TclGetOpenModeEx(interp, modeString, &seekFlag, &binary);
	if (mode == -1) {
	    chan = NULL;
	} else {
	    int flags = TCL_STDERR | TCL_ENFORCE_MODE;

	    switch (mode & (O_RDONLY | O_WRONLY | O_RDWR)) {
	    case O_RDONLY:
		flags |= TCL_STDOUT;
		break;
	    case O_WRONLY:
		flags |= TCL_STDIN;
		break;
	    case O_RDWR:
		flags |= (TCL_STDIN | TCL_STDOUT);
		break;
	    default:
		Tcl_Panic("Tcl_OpenCmd: invalid mode value");
		break;
	    }
	    chan = Tcl_OpenCommandChannel(interp, cmdObjc, cmdArgv, flags);
	    if (binary && chan) {
		Tcl_SetChannelOption(interp, chan, "-translation", "binary");
	    }
	}
	ckfree((char *) cmdArgv);
    }
    if (chan == NULL) {
	return TCL_ERROR;
    }
    Tcl_RegisterChannel(interp, chan);
    Tcl_AppendResult(interp, Tcl_GetChannelName(chan), NULL);
    return TCL_OK;
}
示例#29
0
文件: tclTimer.c 项目: smh377/tcl
	/* ARGSUSED */
int
Tcl_AfterObjCmd(
    ClientData clientData,	/* Unused */
    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{
    Tcl_WideInt ms = 0;		/* Number of milliseconds to wait */
    Tcl_Time wakeup;
    AfterInfo *afterPtr;
    AfterAssocData *assocPtr;
    int length;
    int index;
    static const char *const afterSubCmds[] = {
	"cancel", "idle", "info", NULL
    };
    enum afterSubCmds {AFTER_CANCEL, AFTER_IDLE, AFTER_INFO};
    ThreadSpecificData *tsdPtr = InitTimer();

    if (objc < 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "option ?arg ...?");
	return TCL_ERROR;
    }

    /*
     * Create the "after" information associated for this interpreter, if it
     * doesn't already exist.
     */

    assocPtr = Tcl_GetAssocData(interp, "tclAfter", NULL);
    if (assocPtr == NULL) {
	assocPtr = ckalloc(sizeof(AfterAssocData));
	assocPtr->interp = interp;
	assocPtr->firstAfterPtr = NULL;
	Tcl_SetAssocData(interp, "tclAfter", AfterCleanupProc, assocPtr);
    }

    /*
     * First lets see if the command was passed a number as the first argument.
     */

    if (objv[1]->typePtr == &tclIntType
#ifndef TCL_WIDE_INT_IS_LONG
	    || objv[1]->typePtr == &tclWideIntType
#endif
	    || objv[1]->typePtr == &tclBignumType
	    || (Tcl_GetIndexFromObj(NULL, objv[1], afterSubCmds, "", 0,
		    &index) != TCL_OK)) {
	index = -1;
	if (Tcl_GetWideIntFromObj(NULL, objv[1], &ms) != TCL_OK) {
            const char *arg = Tcl_GetString(objv[1]);

	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
                    "bad argument \"%s\": must be"
                    " cancel, idle, info, or an integer", arg));
            Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "INDEX", "argument",
                    arg, NULL);
	    return TCL_ERROR;
	}
    }

    /*
     * At this point, either index = -1 and ms contains the number of ms
     * to wait, or else index is the index of a subcommand.
     */

    switch (index) {
    case -1: {
	if (ms < 0) {
	    ms = 0;
	}
	if (objc == 2) {
	    return AfterDelay(interp, ms);
	}
	afterPtr = ckalloc(sizeof(AfterInfo));
	afterPtr->assocPtr = assocPtr;
	if (objc == 3) {
	    afterPtr->commandPtr = objv[2];
	} else {
	    afterPtr->commandPtr = Tcl_ConcatObj(objc-2, objv+2);
	}
	Tcl_IncrRefCount(afterPtr->commandPtr);

	/*
	 * The variable below is used to generate unique identifiers for after
	 * commands. This id can wrap around, which can potentially cause
	 * problems. However, there are not likely to be problems in practice,
	 * because after commands can only be requested to about a month in
	 * the future, and wrap-around is unlikely to occur in less than about
	 * 1-10 years. Thus it's unlikely that any old ids will still be
	 * around when wrap-around occurs.
	 */

	afterPtr->id = tsdPtr->afterId;
	tsdPtr->afterId += 1;
	Tcl_GetTime(&wakeup);
	wakeup.sec += (long)(ms / 1000);
	wakeup.usec += ((long)(ms % 1000)) * 1000;
	if (wakeup.usec > 1000000) {
	    wakeup.sec++;
	    wakeup.usec -= 1000000;
	}
	afterPtr->token = TclCreateAbsoluteTimerHandler(&wakeup,
		AfterProc, afterPtr);
	afterPtr->nextPtr = assocPtr->firstAfterPtr;
	assocPtr->firstAfterPtr = afterPtr;
	Tcl_SetObjResult(interp, Tcl_ObjPrintf("after#%d", afterPtr->id));
	return TCL_OK;
    }
    case AFTER_CANCEL: {
	Tcl_Obj *commandPtr;
	const char *command, *tempCommand;
	int tempLength;

	if (objc < 3) {
	    Tcl_WrongNumArgs(interp, 2, objv, "id|command");
	    return TCL_ERROR;
	}
	if (objc == 3) {
	    commandPtr = objv[2];
	} else {
	    commandPtr = Tcl_ConcatObj(objc-2, objv+2);;
	}
	command = TclGetStringFromObj(commandPtr, &length);
	for (afterPtr = assocPtr->firstAfterPtr;  afterPtr != NULL;
		afterPtr = afterPtr->nextPtr) {
	    tempCommand = TclGetStringFromObj(afterPtr->commandPtr,
		    &tempLength);
	    if ((length == tempLength)
		    && !memcmp(command, tempCommand, (unsigned) length)) {
		break;
	    }
	}
	if (afterPtr == NULL) {
	    afterPtr = GetAfterEvent(assocPtr, commandPtr);
	}
	if (objc != 3) {
	    Tcl_DecrRefCount(commandPtr);
	}
	if (afterPtr != NULL) {
	    if (afterPtr->token != NULL) {
		Tcl_DeleteTimerHandler(afterPtr->token);
	    } else {
		Tcl_CancelIdleCall(AfterProc, afterPtr);
	    }
	    FreeAfterPtr(afterPtr);
	}
	break;
    }
    case AFTER_IDLE:
	if (objc < 3) {
	    Tcl_WrongNumArgs(interp, 2, objv, "script ?script ...?");
	    return TCL_ERROR;
	}
	afterPtr = ckalloc(sizeof(AfterInfo));
	afterPtr->assocPtr = assocPtr;
	if (objc == 3) {
	    afterPtr->commandPtr = objv[2];
	} else {
	    afterPtr->commandPtr = Tcl_ConcatObj(objc-2, objv+2);
	}
	Tcl_IncrRefCount(afterPtr->commandPtr);
	afterPtr->id = tsdPtr->afterId;
	tsdPtr->afterId += 1;
	afterPtr->token = NULL;
	afterPtr->nextPtr = assocPtr->firstAfterPtr;
	assocPtr->firstAfterPtr = afterPtr;
	Tcl_DoWhenIdle(AfterProc, afterPtr);
	Tcl_SetObjResult(interp, Tcl_ObjPrintf("after#%d", afterPtr->id));
	break;
    case AFTER_INFO:
	if (objc == 2) {
            Tcl_Obj *resultObj = Tcl_NewObj();

	    for (afterPtr = assocPtr->firstAfterPtr; afterPtr != NULL;
		    afterPtr = afterPtr->nextPtr) {
		if (assocPtr->interp == interp) {
                    Tcl_ListObjAppendElement(NULL, resultObj, Tcl_ObjPrintf(
                            "after#%d", afterPtr->id));
		}
	    }
            Tcl_SetObjResult(interp, resultObj);
	    return TCL_OK;
	}
	if (objc != 3) {
	    Tcl_WrongNumArgs(interp, 2, objv, "?id?");
	    return TCL_ERROR;
	}
	afterPtr = GetAfterEvent(assocPtr, objv[2]);
	if (afterPtr == NULL) {
            const char *eventStr = TclGetString(objv[2]);

	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
                    "event \"%s\" doesn't exist", eventStr));
            Tcl_SetErrorCode(interp, "TCL","LOOKUP","EVENT", eventStr, NULL);
	    return TCL_ERROR;
	} else {
            Tcl_Obj *resultListPtr = Tcl_NewObj();

            Tcl_ListObjAppendElement(interp, resultListPtr,
                    afterPtr->commandPtr);
            Tcl_ListObjAppendElement(interp, resultListPtr, Tcl_NewStringObj(
		    (afterPtr->token == NULL) ? "idle" : "timer", -1));
            Tcl_SetObjResult(interp, resultListPtr);
        }
	break;
    default:
	Tcl_Panic("Tcl_AfterObjCmd: bad subcommand index to afterSubCmds");
    }
    return TCL_OK;
}
	/* ARGSUSED */
int
Tcl_PutsObjCmd(
    ClientData dummy,		/* Not used. */
    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{
    Tcl_Channel chan;		/* The channel to puts on. */
    Tcl_Obj *string;		/* String to write. */
    Tcl_Obj *chanObjPtr = NULL;	/* channel object. */
    int newline;		/* Add a newline at end? */
    int result;			/* Result of puts operation. */
    int mode;			/* Mode in which channel is opened. */
    ThreadSpecificData *tsdPtr;

    switch (objc) {
    case 2: /* [puts $x] */
	string = objv[1];
	newline = 1;
	break;

    case 3: /* [puts -nonewline $x] or [puts $chan $x] */
	if (strcmp(TclGetString(objv[1]), "-nonewline") == 0) {
	    newline = 0;
	} else {
	    newline = 1;
	    chanObjPtr = objv[1];
	}
	string = objv[2];
	break;

    case 4: /* [puts -nonewline $chan $x] or [puts $chan $x nonewline] */
	if (strcmp(TclGetString(objv[1]), "-nonewline") == 0) {
	    chanObjPtr = objv[2];
	    string = objv[3];
	} else {
	    /*
	     * The code below provides backwards compatibility with an old
	     * form of the command that is no longer recommended or
	     * documented.
	     */

	    char *arg;
	    int length;

	    arg = TclGetStringFromObj(objv[3], &length);
	    if ((length != 9)
		    || (strncmp(arg, "nonewline", (size_t) length) != 0)) {
		Tcl_AppendResult(interp, "bad argument \"", arg,
			"\": should be \"nonewline\"", NULL);
		return TCL_ERROR;
	    }
	    chanObjPtr = objv[1];
	    string = objv[2];
	}
	newline = 0;
	break;

    default:
	/* [puts] or [puts some bad number of arguments...] */
	Tcl_WrongNumArgs(interp, 1, objv, "?-nonewline? ?channelId? string");
	return TCL_ERROR;
    }

    if (chanObjPtr == NULL) {
	tsdPtr = TCL_TSD_INIT(&dataKey);

	if (!tsdPtr->initialized) {
	    tsdPtr->initialized = 1;
	    TclNewLiteralStringObj(tsdPtr->stdoutObjPtr, "stdout");
	    Tcl_IncrRefCount(tsdPtr->stdoutObjPtr);
	    Tcl_CreateThreadExitHandler(FinalizeIOCmdTSD, NULL);
	}
	chanObjPtr = tsdPtr->stdoutObjPtr;
    }
    if (TclGetChannelFromObj(interp, chanObjPtr, &chan, &mode, 0) != TCL_OK) {
	return TCL_ERROR;
    }
    if ((mode & TCL_WRITABLE) == 0) {
	Tcl_AppendResult(interp, "channel \"", TclGetString(chanObjPtr),
		"\" wasn't opened for writing", NULL);
	return TCL_ERROR;
    }

    result = Tcl_WriteObj(chan, string);
    if (result < 0) {
	goto error;
    }
    if (newline != 0) {
	result = Tcl_WriteChars(chan, "\n", 1);
	if (result < 0) {
	    goto error;
	}
    }
    return TCL_OK;

    /*
     * TIP #219.
     * Capture error messages put by the driver into the bypass area and put
     * them into the regular interpreter result. Fall back to the regular
     * message if nothing was found in the bypass.
     */

  error:
    if (!TclChanCaughtErrorBypass(interp, chan)) {
	Tcl_AppendResult(interp, "error writing \"",
		TclGetString(chanObjPtr), "\": ",
		Tcl_PosixError(interp), NULL);
    }
    return TCL_ERROR;
}