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pTk/mTk/tclGeneric/tclCmdAH.c  view on Meta::CPAN

{
    register Tcl_Obj *objPtr;
    Tcl_Obj *resultPtr;
    register char *bytes;
    int length, i, result;

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

    if (objc == 2) {
	result = Tcl_ExprObj(interp, objv[1], &resultPtr);
	if (result == TCL_OK) {
	    Tcl_SetObjResult(interp, resultPtr);
	    Tcl_DecrRefCount(resultPtr);  /* done with the result object */
	}
	return result;
    }

    /*
     * Create a new object holding the concatenated argument strings.
     */

    /*** QUESTION: Do we need to copy the slow way? ***/
    bytes = Tcl_GetStringFromObj(objv[1], &length);
    objPtr = Tcl_NewStringObj(bytes, length);
    Tcl_IncrRefCount(objPtr);
    for (i = 2;  i < objc;  i++) {
	Tcl_AppendToObj(objPtr, " ", 1);
	bytes = Tcl_GetStringFromObj(objv[i], &length);
	Tcl_AppendToObj(objPtr, bytes, length);
    }

    /*
     * Evaluate the concatenated string object.
     */

    result = Tcl_ExprObj(interp, objPtr, &resultPtr);
    if (result == TCL_OK) {
	Tcl_SetObjResult(interp, resultPtr);
	Tcl_DecrRefCount(resultPtr);  /* done with the result object */
    }

    /*
     * Free allocated resources.
     */

    Tcl_DecrRefCount(objPtr);
    return result;
}

/*
 *----------------------------------------------------------------------
 *
 * Tcl_FileObjCmd --
 *
 *	This procedure is invoked to process the "file" Tcl command.
 *	See the user documentation for details on what it does.
 *	PLEASE NOTE THAT THIS FAILS WITH FILENAMES AND PATHS WITH
 *	EMBEDDED NULLS, WHICH COULD THEORETICALLY HAPPEN ON A MAC.
 *      With the object-based Tcl_FS APIs, the above NOTE may no
 *      longer be true.  In any case this assertion should be tested.
 *
 * Results:
 *	A standard Tcl result.
 *
 * Side effects:
 *	See the user documentation.
 *
 *----------------------------------------------------------------------
 */

	/* ARGSUSED */
int
Tcl_FileObjCmd(dummy, interp, objc, objv)
    ClientData dummy;		/* Not used. */
    Tcl_Interp *interp;		/* Current interpreter. */
    int objc;			/* Number of arguments. */
    Tcl_Obj *CONST objv[];	/* Argument objects. */
{
    int index;

/*
 * This list of constants should match the fileOption string array below.
 */

    static CONST char *fileOptions[] = {
	"atime",	"attributes",	"channels",	"copy",
	"delete",
	"dirname",	"executable",	"exists",	"extension",
	"isdirectory",	"isfile",	"join",		"link",
	"lstat",        "mtime",	"mkdir",	"nativename",
	"normalize",    "owned",
	"pathtype",	"readable",	"readlink",	"rename",
	"rootname",	"separator",    "size",		"split",
	"stat",         "system",
	"tail",		"type",		"volumes",	"writable",
	(char *) NULL
    };
    enum options {
	FCMD_ATIME,	FCMD_ATTRIBUTES, FCMD_CHANNELS,	FCMD_COPY,
	FCMD_DELETE,
	FCMD_DIRNAME,	FCMD_EXECUTABLE, FCMD_EXISTS,	FCMD_EXTENSION,
	FCMD_ISDIRECTORY, FCMD_ISFILE,	FCMD_JOIN,	FCMD_LINK,
	FCMD_LSTAT,     FCMD_MTIME,	FCMD_MKDIR,	FCMD_NATIVENAME,
	FCMD_NORMALIZE, FCMD_OWNED,
	FCMD_PATHTYPE,	FCMD_READABLE,	FCMD_READLINK,	FCMD_RENAME,
	FCMD_ROOTNAME,	FCMD_SEPARATOR, FCMD_SIZE,	FCMD_SPLIT,
	FCMD_STAT,      FCMD_SYSTEM,
	FCMD_TAIL,	FCMD_TYPE,	FCMD_VOLUMES,	FCMD_WRITABLE
    };

    if (objc < 2) {
    	Tcl_WrongNumArgs(interp, 1, objv, "option ?arg ...?");
        return TCL_ERROR;
    }
    if (Tcl_GetIndexFromObj(interp, objv[1], fileOptions, "option", 0,
	    &index) != TCL_OK) {
    	return TCL_ERROR;
    }