/* variables.h -- data structures for shell variables. */
+/* Copyright (C) 1987,1991 Free Software Foundation, Inc.
+
+ This file is part of GNU Bash, the Bourne Again SHell.
+
+ Bash is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ Bash is distributed in the hope that it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+ License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Bash; see the file COPYING. If not, write to the Free
+ Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
+
#if !defined (_VARIABLES_H_)
#define _VARIABLES_H_
/* Placeholder for future modifications if cross-compiling or building a
`fat' binary, e.g. on Apple Rhapsody. These values are used in multiple
files, so they appear here. */
-#define HOSTTYPE CONF_HOSTTYPE
-#define OSTYPE CONF_OSTYPE
-#define MACHTYPE CONF_MACHTYPE
+#if !defined (RHAPSODY)
+# define HOSTTYPE CONF_HOSTTYPE
+# define OSTYPE CONF_OSTYPE
+# define MACHTYPE CONF_MACHTYPE
+#else /* RHAPSODY */
+# if defined(__powerpc__) || defined(__ppc__)
+# define HOSTTYPE "powerpc"
+# elif defined(__i386__)
+# define HOSTTYPE "i386"
+# else
+# define HOSTTYPE CONF_HOSTTYPE
+# endif
+
+# define OSTYPE CONF_OSTYPE
+# define VENDOR CONF_VENDOR
+
+# define MACHTYPE HOSTTYPE "-" VENDOR "-" OSTYPE
+#endif /* RHAPSODY */
/* What a shell variable looks like. */
typedef struct variable {
char *name; /* Symbol that the user types. */
char *value; /* Value that is returned. */
+ char *exportstr; /* String for the environment. */
DYNAMIC_FUNC *dynamic_value; /* Function called to return a `dynamic'
value for a variable, like $SECONDS
or $RANDOM. */
#define att_imported 0x080 /* came from environment */
#define att_local 0x100 /* variable is local to a function */
#define att_tempvar 0x200 /* variable came from the temp environment */
+#define att_importstr 0x400 /* exportstr points into initial environment */
#define exported_p(var) ((((var)->attributes) & (att_exported)))
#define readonly_p(var) ((((var)->attributes) & (att_readonly)))
#define array_cell(var) ((ARRAY *)(var)->value)
#define SETVARATTR(var, attr, undo) \
- ((undo == 0) ? ((var)->attributes |= (attribute)) \
- : ((var)->attributes &= ~(attribute)))
+ ((undo == 0) ? ((var)->attributes |= (attr)) \
+ : ((var)->attributes &= ~(attr)))
+
+#define VSETATTR(var, attr) ((var)->attributes |= (attr))
+#define VUNSETATTR(var, attr) ((var)->attributes &= ~(attr))
+
+/* Macros to perform various operations on `exportstr' member of a SHELL_VAR. */
+#define CLEAR_EXPORTSTR(var) (var)->exportstr = (char *)NULL
+#define COPY_EXPORTSTR(var) ((var)->exportstr) ? savestring ((var)->exportstr) : (char *)NULL
+#define SET_EXPORTSTR(var, value) (var)->exportstr = (value)
+#define SAVE_EXPORTSTR(var, value) (var)->exportstr = (value) ? savestring (value) : (char *)NULL
+#define FREE_EXPORTSTR(var) \
+ do { \
+ if ((var)->exportstr) \
+ { \
+ if (((var)->attributes & att_importstr) == 0) \
+ free ((var)->exportstr); \
+ } \
+ } while (0)
+
+#if 0
+#define CACHE_IMPORTSTR(var, value) \
+ do { \
+ (var)->exportstr = value; \
+ (var)->attributes |= att_importstr; \
+ } while (0)
+#else
+#define CACHE_IMPORTSTR(var, value) \
+ do { \
+ (var)->exportstr = savestring (value); \
+ } while (0)
+#endif
+
+#define INVALIDATE_EXPORTSTR(var) \
+ do { \
+ if ((var)->exportstr) \
+ { \
+ if (((var)->attributes & att_importstr) == 0) \
+ free ((var)->exportstr); \
+ (var)->exportstr = (char *)NULL; \
+ (var)->attributes &= ~att_importstr; \
+ } \
+ } while (0)
+
/* Stuff for hacking variables. */
extern int variable_context;
extern HASH_TABLE *shell_variables, *shell_functions;
extern void set_ppid __P((void));
+extern void make_funcname_visible __P((int));
+
extern SHELL_VAR *find_function __P((char *));
extern SHELL_VAR *find_variable __P((char *));
extern SHELL_VAR *find_variable_internal __P((char *, int));
extern SHELL_VAR *make_local_variable __P((char *));
extern SHELL_VAR *bind_variable __P((char *, char *));
extern SHELL_VAR *bind_function __P((char *, COMMAND *));
+
extern SHELL_VAR **map_over __P((Function *, HASH_TABLE *));
extern SHELL_VAR **all_shell_variables __P((void));
extern SHELL_VAR **all_shell_functions __P((void));
extern SHELL_VAR **all_visible_variables __P((void));
extern SHELL_VAR **all_visible_functions __P((void));
+extern SHELL_VAR **all_exported_variables __P((void));
+#if defined (ARRAY_VARS)
+extern SHELL_VAR **all_array_variables __P((void));
+#endif
+
+extern char **all_variables_matching_prefix __P((char *));
extern char **make_var_array __P((HASH_TABLE *));
extern char **add_or_supercede_exported_var __P((char *, int));
extern char *get_string_value __P((char *));
extern char *make_variable_value __P((SHELL_VAR *, char *));
+extern SHELL_VAR *bind_variable_value __P((SHELL_VAR *, char *));
+extern SHELL_VAR *bind_int_variable __P((char *, char *));
+
extern int assignment __P((char *));
extern int variable_in_context __P((SHELL_VAR *));
extern int assign_in_env __P((char *));
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