tclmacfcmd.c

tcl是工具命令语言

TclpObjRemoveDirectory(pathPtr, recursive, errorPtr)
    Tcl_Obj *pathPtr;
    int recursive;
    Tcl_Obj **errorPtr;
{
    Tcl_DString ds;
    int ret;
    ret = DoRemoveDirectory(Tcl_FSGetNativePath(pathPtr),recursive, &ds);
    if (ret != TCL_OK) {
	*errorPtr = Tcl_NewStringObj(Tcl_DStringValue(&ds), -1);
	Tcl_DStringFree(&ds);
	Tcl_IncrRefCount(*errorPtr);
    }
    return ret;
}

static int
DoRemoveDirectory(
    CONST char *path,		/* Pathname of directory to be removed
				 * (native). */
    int recursive,		/* If non-zero, removes directories that
				 * are nonempty.  Otherwise, will only remove
				 * empty directories. */
    Tcl_DString *errorPtr)	/* If non-NULL, uninitialized or free
				 * DString filled with UTF-8 name of file
				 * causing error. */
{
    OSErr err;
    FSSpec fileSpec;
    long dirID;
    int locked;
    Boolean isDirectory;
    CInfoPBRec pb;
    Str255 fileName;


    locked = 0;
    err = FSpLocationFromPath(strlen(path), path, &fileSpec);
    if (err != noErr) {
        goto done;
    }   

    /*
     * Since FSpDeleteCompat will delete a file, make sure this isn't
     * a file first.
     */
         
    isDirectory = 1;
    FSpGetDirectoryID(&fileSpec, &dirID, &isDirectory);
    if (isDirectory == 0) {
        errno = ENOTDIR;
        return TCL_ERROR;
    }
    
    err = FSpDeleteCompat(&fileSpec);
    if (err == fLckdErr) {
        locked = 1;
    	FSpRstFLockCompat(&fileSpec);
    	err = FSpDeleteCompat(&fileSpec);
    }
    if (err == noErr) {
	return TCL_OK;
    }
    if (err != fBsyErr) {
        goto done;
    }
     
    if (recursive == 0) {
	/*
	 * fBsyErr means one of three things: file busy, directory not empty, 
	 * or working directory control block open.  Determine if directory
	 * is empty. If directory is not empty, return EEXIST.
	 */

	pb.hFileInfo.ioVRefNum = fileSpec.vRefNum;
	pb.hFileInfo.ioDirID = dirID;
	pb.hFileInfo.ioNamePtr = (StringPtr) fileName;
	pb.hFileInfo.ioFDirIndex = 1;
	if (PBGetCatInfoSync(&pb) == noErr) {
	    err = dupFNErr;	/* EEXIST */
	    goto done;
	}
    }
	
    /*
     * DeleteDirectory removes a directory and all its contents, including
     * any locked files.  There is no interface to get the name of the 
     * file that caused the error, if an error occurs deleting this tree,
     * unless we rewrite DeleteDirectory ourselves.
     */
	 
    err = DeleteDirectory(fileSpec.vRefNum, dirID, NULL);

    done:
    if (err != noErr) {
	if (errorPtr != NULL) {
	    Tcl_UtfToExternalDString(NULL, path, -1, errorPtr);
	}
        if (locked) {
            FSpSetFLockCompat(&fileSpec);
        }
    	errno = TclMacOSErrorToPosixError(err);
    	return TCL_ERROR;
    }
    return TCL_OK;
}
			    
/*
 *---------------------------------------------------------------------------
 *
 * GetFileSpecs --
 *
 *	Gets FSSpecs for the specified path and its parent directory.
 *
 * Results:
 *	The return value is noErr if there was no error getting FSSpecs,
 *	otherwise it is an error describing the problem.  Fills buffers 
 *	with information, as above.  
 *
 * Side effects:
 *	None.
 *
 *---------------------------------------------------------------------------
 */

static OSErr
GetFileSpecs(
    CONST char *path,		/* The path to query. */
    FSSpec *pathSpecPtr,	/* Filled with information about path. */
    FSSpec *dirSpecPtr,		/* Filled with information about path's
    				 * parent directory. */
    Boolean *pathExistsPtr,	/* Set to true if path actually exists, 
    				 * false if it doesn't or there was an 
    				 * error reading the specified path. */
    Boolean *pathIsDirectoryPtr)/* Set to true if path is itself a directory,
    				 * otherwise false. */
{
    CONST char *dirName;
    OSErr err;
    int argc;
    CONST char **argv;
    long d;
    Tcl_DString buffer;
        
    *pathExistsPtr = false;
    *pathIsDirectoryPtr = false;
    
    Tcl_DStringInit(&buffer);
    Tcl_SplitPath(path, &argc, &argv);
    if (argc == 1) {
        dirName = ":";
    } else {
        dirName = Tcl_JoinPath(argc - 1, argv, &buffer);
    }
    err = FSpLocationFromPath(strlen(dirName), dirName, dirSpecPtr);
    Tcl_DStringFree(&buffer);
    ckfree((char *) argv);

    if (err == noErr) {
        err = FSpLocationFromPath(strlen(path), path, pathSpecPtr);
        if (err == noErr) {
            *pathExistsPtr = true;
            err = FSpGetDirectoryID(pathSpecPtr, &d, pathIsDirectoryPtr);
        } else if (err == fnfErr) {
            err = noErr;
        }
    }
    return err;
}

/*
 *-------------------------------------------------------------------------
 *
 * FSpGetFLockCompat --
 *
 *	Determines if there exists a software lock on the specified
 *	file.  The software lock could prevent the file from being 
 *	renamed or moved.
 *
 * Results:
 *	Standard macintosh error code.  
 *
 * Side effects:
 *	None.
 *
 *
 *-------------------------------------------------------------------------
 */
 
OSErr
FSpGetFLockCompat(
    const FSSpec *specPtr,	/* File to query. */
    Boolean *lockedPtr)		/* Set to true if file is locked, false
    				 * if it isn't or there was an error reading
    				 * specified file. */
{
    CInfoPBRec pb;
    OSErr err;
    
    pb.hFileInfo.ioVRefNum = specPtr->vRefNum;
    pb.hFileInfo.ioDirID = specPtr->parID;
    pb.hFileInfo.ioNamePtr = (StringPtr) specPtr->name;
    pb.hFileInfo.ioFDirIndex = 0;
    
    err = PBGetCatInfoSync(&pb);
    if ((err == noErr) && (pb.hFileInfo.ioFlAttrib & 0x01)) {
        *lockedPtr = true;
    } else {
        *lockedPtr = false;
    }
    return err;
}
    
/*
 *----------------------------------------------------------------------
 *
 * Pstrequal --
 *
 *      Pascal string compare. 
 *
 * Results:
 *      Returns 1 if strings equal, 0 otherwise.
 *
 * Side effects:
 *      None.
 *      
 *----------------------------------------------------------------------
 */

static int 
Pstrequal (
    ConstStr255Param stringA,	/* Pascal string A */
    ConstStr255Param stringB)   /* Pascal string B */
{
    int i, len;
    
    len = *stringA;
    for (i = 0; i <= len; i++) {
        if (*stringA++ != *stringB++) {
            return 0;
        }
    }
    return 1;
}
    
/*
 *----------------------------------------------------------------------
 *
 * GetFileFinderAttributes --
 *
 *	Returns a Tcl_Obj containing the value of a file attribute
 *	which is part of the FInfo record. Which attribute is controlled
 *	by objIndex.
 *
 * Results:
 *      Returns a standard TCL error. If the return value is TCL_OK,
 *	the new creator or file type object is put into attributePtrPtr.
 *	The object will have ref count 0. If there is an error,
 *	attributePtrPtr is not touched.
 *
 * Side effects:
 *      A new object is allocated if the file is valid.
 *      
 *----------------------------------------------------------------------
 */

static int
GetFileFinderAttributes(
    Tcl_Interp *interp,		/* The interp to report errors with. */
    int objIndex,		/* The index of the attribute option. */
    Tcl_Obj *fileName,	/* The name of the file (UTF-8). */
    Tcl_Obj **attributePtrPtr)	/* A pointer to return the object with. */
{
    OSErr err;
    FSSpec fileSpec;
    FInfo finfo;
    CONST char *native;

    native=Tcl_FSGetNativePath(fileName);
    err = FSpLLocationFromPath(strlen(native),
	    native, &fileSpec);

    if (err == noErr) {
    	err = FSpGetFInfo(&fileSpec, &finfo);
    }
    
    if (err == noErr) {
    	switch (objIndex) {
    	    case MAC_CREATOR_ATTRIBUTE:
    	    	*attributePtrPtr = Tcl_NewOSTypeObj(finfo.fdCreator);
    	    	break;
    	    case MAC_HIDDEN_ATTRIBUTE:
    	    	*attributePtrPtr = Tcl_NewBooleanObj(finfo.fdFlags
    	    		& kIsInvisible);
    	    	break;
    	    case MAC_TYPE_ATTRIBUTE:
    	    	*attributePtrPtr = Tcl_NewOSTypeObj(finfo.fdType);
    	    	break;
    	}
    } else if (err == fnfErr) {
    	long dirID;
    	Boolean isDirectory = 0;
    	
    	err = FSpGetDirectoryID(&fileSpec, &dirID, &isDirectory);
    	if ((err == noErr) && isDirectory) {
    	    if (objIndex == MAC_HIDDEN_ATTRIBUTE) {
    	    	*attributePtrPtr = Tcl_NewBooleanObj(0);
    	    } else {
    	    	*attributePtrPtr = Tcl_NewOSTypeObj('Fldr');
    	    }
    	}
    }
    
    if (err != noErr) {
    	errno = TclMacOSErrorToPosixError(err);
    	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), 
    		"could not read \"", Tcl_GetString(fileName), "\": ",
    		Tcl_PosixError(interp), (char *) NULL);
    	return TCL_ERROR;
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * GetFileReadOnly --
 *
 *	Returns a Tcl_Obj containing a Boolean value indicating whether
 *	or not the file is read-only. The object will have ref count 0.
 *	This procedure just checks the Finder attributes; it does not
 *	check AppleShare sharing attributes.
 *
 * Results:
 *      Returns a standard TCL error. If the return value is TCL_OK,
 *	the new creator type object is put into readOnlyPtrPtr.
 *	If there is an error, readOnlyPtrPtr is not touched.
 *
 * Side effects:
 *      A new object is allocated if the file is valid.
 *      
 *----------------------------------------------------------------------
 */

static int
GetFileReadOnly(
    Tcl_Interp *interp,		/* The interp to report errors with. */
    int objIndex,		/* The index of the attribute. */
    Tcl_Obj *fileName,	/* The name of the file (UTF-8). */
    Tcl_Obj **readOnlyPtrPtr)	/* A pointer to return the object with. */
{
    OSErr err;
    FSSpec fileSpec;
    CInfoPBRec paramBlock;
    CONST char *native;

    native=Tcl_FSGetNativePath(fileName);
    err = FSpLLocationFromPath(strlen(native),
	    native, &fileSpec);
    
    if (err == noErr) {
    	if (err == noErr) {
    	    paramBlock.hFileInfo.ioCompletion = NULL;
    	    paramBlock.hFileInfo.ioNamePtr = fileSpec.name;
    	    paramBlock.hFileInfo.ioVRefNum = fileSpec.vRefNum;
    	    paramBlock.hFileInfo.ioFDirIndex = 0;
    	    paramBlock.hFileInfo.ioDirID = fileSpec.parID;
    	    err = PBGetCatInfo(&paramBlock, 0);
    	    if (err == noErr) {
    	    
    	    	/*
    	    	 * For some unknown reason, the Mac does not give
    	    	 * symbols for the bits in the ioFlAttrib field.
    	    	 * 1 -> locked.
    	    	 */
    	    
    	    	*readOnlyPtrPtr = Tcl_NewBooleanObj(
    	    		paramBlock.hFileInfo.ioFlAttrib & 1);
    	    }
    	}
    }
    if (err != noErr) {
    	errno = TclMacOSErrorToPosixError(err);
    	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), 
    		"could not read \"", Tcl_GetString(fileName), "\": ",
    		Tcl_PosixError(interp), (char *) NULL);
    	return TCL_ERROR;
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * SetFileFinderAttributes --
 *
 *	Sets the file to the creator or file type given by attributePtr.
 *	objIndex determines whether the creator or file type is set.
 *
 * Results:
 *	Returns a standard TCL error.
 *
 * Side effects:
 *      The file's attribute is set.
 *      
 *----------------------------------------------------------------------
 */

static int
SetFileFinderAttributes(
    Tcl_Interp *interp,		/* The interp to report errors with. */
    int objIndex,		/* The index of the attribute. */
    Tcl_Obj *fileName,	/* The name of the file (UTF-8). */
    Tcl_Obj *attributePtr)	/* The command line object. */