resource(3tcl)						       Tcl Built-In Commands						    resource(3tcl)

__________________________________________________________________________________________________________________________________________________

NAME

       resource - Manipulate Macintosh resources

SYNOPSIS

       resource option ?arg arg ...?
_________________________________________________________________

DESCRIPTION

       The  resource  command provides some generic operations for dealing with Macintosh resources.  This command is only supported on the Macin-
       tosh platform.  Each Macintosh file consists of two forks: a data fork and a resource fork.  You use the normal	open,  puts,  close,  etc.
       commands  to  manipulate  the  data  fork.   You must use this command, however, to interact with the resource fork.  Option indicates what
       resource command to perform.  Any unique abbreviation for option is acceptable.	The valid options are:

       resource close rsrcRef
	      Closes the given resource reference (obtained from resource open).  Resources from that resource file will no longer be available.

       resource delete ?options? resourceType
	      This command will delete the resource specified by options and type resourceType (see RESOURCE TYPES below).  The options  give  you
	      several ways to specify the resource to be deleted.

	      -id resourceId
		     If  the -id option is given the id resourceId (see RESOURCE IDS below) is used to specify the resource to be deleted.  The id
		     must be a number - to specify a name use the -name option.

	      -name resourceName
		     If -name is specified, the resource named resourceName will be deleted.  If the -id is also provided, then there  must  be  a
		     resource  with  BOTH  this  name and this id.  If no name is provided, then the id will be used regardless of the name of the
		     actual resource.

	      -file resourceRef
		     If the -file option is specified then the resource will be deleted from the file pointed to by  resourceRef.   Otherwise  the
		     first  resource  with  the given resourceName and or resourceId which is found on the resource file path will be deleted.	To
		     inspect the file path, use the resource files command.

       resource files ?resourceRef?
	      If resourceRefis not provided, this command returns a Tcl list of the resource references for all the currently open resource files.
	      The  list  is  in the normal Macintosh search order for resources.  If resourceRef is specified, the command will return the path to
	      the file whose resource fork is represented by that token.

       resource list resourceType ?resourceRef?
	      List all of the resources ids of type resourceType (see RESOURCE TYPES below).  If resourceRef is specified then	the  command  will
	      limit  the  search  to  that  particular	resource  file.  Otherwise, all resource files currently opened by the application will be
	      searched.  A Tcl list of either the resource name's or resource id's of the found resources will be returned.  See the RESOURCE  IDS
	      section below for more details about what a resource id is.

       resource open fileName ?access?
	      Open  the resource for the file fileName.  Standard file access permissions may also be specified (see the manual entry for open for
	      details).  A resource reference (resourceRef) is returned that can be used by the other resource commands.  An error  can  occur	if
	      the  file  doesn't  exist  or the file does not have a resource fork.  However, if you open the file with write permissions the file
	      and/or resource fork will be created instead of generating an error.

       resource read resourceType resourceId ?resourceRef?
	      Read the entire resource of type resourceType (see RESOURCE TYPES below) and the name or id of resourceId (see RESOURCE  IDS  below)
	      into  memory  and return the result.  If resourceRef is specified we limit our search to that resource file, otherwise we search all
	      open resource forks in the application.  It is important to note that most Macintosh resource use  a  binary  format  and  the  data
	      returned from this command may have embedded NULLs or other non-ASCII data.

       resource types ?resourceRef?
	      This  command  returns  a  Tcl  list  of	all  resource  types  (see  RESOURCE TYPES below) found in the resource file pointed to by
	      resourceRef.  If resourceRef is not specified it will return all the resource types found in every resource file currently opened by
	      the application.

       resource write ?options? resourceType data
	      This  command  will write the passed in data as a new resource of type resourceType (see RESOURCE TYPES below).  Several options are
	      available that describe where and how the resource is stored.

	      -id resourceId
		     If the -id option is given the id resourceId (see RESOURCE IDS below) is used for the new resource,  otherwise  a	unique	id
		     will  be  generated  that will not conflict with any existing resource.  However, the id must be a number - to specify a name
		     use the -name option.

	      -name resourceName
		     If -name is specified the resource will be named resourceName, otherwise it will have the empty string as the name.

	      -file resourceRef
		     If the -file option is specified then the resource will be written in the file pointed to by resourceRef, otherwise the  most
		     recently open resource will be used.

	      -force If the target resource already exists, then by default Tcl will not overwrite it, but raise an error instead.  Use the -force
		     flag to force overwriting the extant resource.

RESOURCE TYPES

       Resource types are defined as a four character string that is then mapped to an underlying id.  For example, TEXT refers to  the  Macintosh
       resource type for text.	The type STR# is a list of counted strings.  All Macintosh resources must be of some type.  See Macintosh documen-
       tation for a more complete list of resource types that are commonly used.

RESOURCE IDS

       For this command the notion of a resource id actually refers to two ideas in Macintosh resources.  Every place you can use  a  resource	Id
       you  can  use either the resource name or a resource number.  Names are always searched or returned in preference to numbers.  For example,
       the resource list command will return names if they exist or numbers if the name is NULL.

PORTABILITY ISSUES

       The resource command is only available on Macintosh.

SEE ALSO

       open(3tcl)

KEYWORDS

       open, resource

Tcl									8.0							    resource(3tcl)