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resource(n)			      Tcl Built-In Commands			      resource(n)


       resource - Manipulate Macintosh resources

       resource option ?arg arg ...?

       The  resource  command  provides  some  generic	operations  for  dealing  with	Macintosh
       resources.  This command is only supported on the Macintosh 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 ref-
	      erences for all the currently open resource files.  The list is in the normal  Mac-
	      intosh  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 speci-
	      fied  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 resently open resource
		     will be used.

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

       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
       documentation for a more complete list of resource types that are commonly used.

       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.

       The resource command is only available on Macintosh.


       open, resource

Tcl					       8.0				      resource(n)
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