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    Length: 1456 (0x5b0)
    Types: TextFile
    Names: »variables.h«

└─⟦a05ed705a⟧ Bits:30007078 DKUUG GNU 2/12/89
    └─⟦ca1f037a2⟧ »./bash-1.04.tar.Z« 
        └─⟦46465a4db⟧ 
            └─⟦this⟧ »bash-1.04/variables.h« 

TextFile

/* variables.h -- data structures for shell variables. */

/* What a shell variable looks like. */
typedef struct variable {
  struct variable *next;	/* Next variable in the list. */
  char *name;			/* Symbol that the user types. */
  char *value;			/* Value that is returned. */
  int attributes;		/* export, readonly, function, invisible... */
  int context;			/* Which context this variable belongs to. */
  struct variable *prev_context; /* Value from previous context or NULL. */
} SHELL_VAR;

/* The various attributes that a given variable can have.
   We only reserve one byte of the INT. */
#define att_exported  0x01	/* %00000001 (export to environment) */
#define att_readonly  0x02	/* %00000010 (cannot change)	     */
#define att_invisible 0x04	/* %00000100 (cannot see)	     */
#define att_function  0x08	/* %00001000 (value is a function)   */
#define att_nounset   0x10	/* %00010000 (cannot unset)	     */

#define exported_p(var)		((((var)->attributes) & (att_exported)))
#define readonly_p(var)		((((var)->attributes) & (att_readonly)))
#define invisible_p(var)	((((var)->attributes) & (att_invisible)))
#define function_p(var)		((((var)->attributes) & (att_function)))

/* Stuff for hacking variables. */
extern SHELL_VAR *variable_list, *bind_variable (), *find_variable ();
extern SHELL_VAR *bind_function (), *copy_variable ();
extern char *get_string_value (), *dollar_vars[];
extern char **export_env;

extern int variable_context;