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-
- ------------------------------------------------------
- LISTING 2
-
-
- /* Options.h
- */
- enum boolean { FALSE, TRUE};
- typedef int boolean;
- typedef void * Options; /*hides definition of the object*/
-
- Options CreateOptions( void );
-
- void PutArgs( Options options, const int argc, char **argv);
- /* Establishes the options list as the argc strings
- pointed to by argv.
- */
-
- boolean IsSwitch( Options, const char switch_character);
- /* Returns TRUE if -switch_character is an option.
- It also marks this arguement as used.
- */
- char * GetParameter( Options, const char switch_character);
- /* Returns a pointer to the string following
- the first occurance of -switch_character
- in the arguement list, called the switch parameter.
- It also marks this arguement as used.
- */
-
- boolean IsMoreSwitches( Options options );
- /* Returns TRUE if there are switches
- which have not been marked as used by IsSwitch()
- */
-
- char * GetNextOption( Options );
- /* Returns pointers to the options
- in first-in, first-out or left-to-right order,
- and NULL when there are no more options.
-
- Options are the strings in the arguement list
- which are neither switches nor switch parameters.
- GetParameter() marks the switch parameters.
- */
-
- void DestroyOptions(Options);
-
-