RulbusInterfaceFactory Class Reference
[Rulbus Interface]

#include <RulbusInterfaceFactory.h>

List of all members.

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Detailed Description

Class RulbusDevice delegates creation of the Rulbus Interface object to this class, member createInterface().

Class RulbusInterfaceFactory determines the type of interface to create from the presence and contents of the RULBUS environment variable.

If the rulbus environment variable does not exist, createInterface() creates an EppRulbusInterface at parallel port address EppRulbusInterface::DEF_EPP_BASE.

If the rulbus environment variable does exist, createInterface() interpretes it as follows:

   rulbus         : interface-name ','?
                  | interface-name ',' base-address?
                  | interface-name ',' base-address ';' nocheck?

   interface-name : isa
                  | epp

   isa            : [iI][sS][aA]   # 'ISA', case insensitive

   epp            : [eE][pP][pP]   # 'EPP', case insensitive

   base-address   : dec-number
                  | hex-number

   dec-number     : [0-9]+

   hex-number     : hex-prefix [0-9a-fA-F]+

   hex-prefix     : '0' [xX]

   nocheck        : 'nocheck'
                  | {other than 'check'}
   

Examples of valid entries as set in the command interpreter are:

• RULBUS=isa
• RULBUS=ISA,0x200, creating an IsaRulbusInterface
• RULBUS=EPP
• RULBUS=epp,0x378;nocheck, creating an EppRulbusInterface, not checking for presence

Static Public Member Functions
TheRulbusInterfacePtr	createInterface ()
	create the Rulbus Interface based on the information from the rulbus environment variable.
Protected Member Functions
	RulbusInterfaceFactory ()
	prevent instantiation
	RulbusInterfaceFactory (RulbusInterfaceFactoryCref)
	prevent copying

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The documentation for this class was generated from the following files:

• RulbusInterfaceFactory.h
• RulbusInterfaceFactory.cpp

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