/usr/include/dacs/var.h is in libdacs-dev 1.4.38a-2build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (c) 2003-2016
* Distributed Systems Software. All rights reserved.
* See the file LICENSE for redistribution information.
*
* $Id: var.h 2910 2016-10-18 19:46:38Z brachman $
*/
#ifndef _VAR_H_
#define _VAR_H_
/*
* These can't be any characters that can appear in the name of a namespace
* or the name of a variable or flag.
*/
#define VAR_NS_SEP_STR "::"
/* Variable reference modifier bit flags */
#define VAR_DEFAULT_FLAG 0 /* No flags */
#define VAR_EXISTS_FLAG (1 << 0) /* e */
#define VAR_NONEMPTY_FLAG (1 << 1) /* n */
#define VAR_EMPTY_FLAG (1 << 2) /* z */
#define VAR_ICASE_FLAG (1 << 3) /* i */
#define VAR_ALTVAL_FLAG (1 << 4) /* ? */
#define VAR_NALTVAL_FLAG (1 << 5) /* + */
typedef struct Var {
char *varname; /* Original variable name */
char *ns; /* Namespace */
char *name; /* Variable name relative to the namespace */
char *flagstr; /* Optional flag string */
unsigned int flags; /* Parsed flag string */
char *altval; /* Alt value for VAR_ALTVAL_FLAG/VAR_NALTVAL_FLAG */
} Var;
typedef struct Var2 {
char *varname; /* Original variable name */
char *ns; /* Namespace */
char *name; /* Variable name relative to the namespace */
char *flagstr; /* Optional flag string */
unsigned int flags; /* Parsed flag string */
char *altval; /* Alt value for VAR_ALTVAL_FLAG/VAR_NALTVAL_FLAG */
Dsvec *refs;
} Var2;
typedef struct Var_ref {
char *ns; /* Namespace */
char *varname; /* Variable name in the namespace */
} Var_ref;
typedef struct Var_ns Var_ns;
/* Namespace bit flags */
#define VAR_NS_DEFAULT 0 /* No flags */
#define VAR_NS_READONLY (1 << 0) /* User cannot modify variables. */
#define VAR_NS_RESERVED (1 << 1) /* Namespace name is reserved. */
#define VAR_NS_TEMPORARY (1 << 2) /* Namespace is temporary. */
#define VAR_NS_STREAM (1 << 3) /* Contains stream context. */
struct Var_ns {
char *ns; /* Name of the namespace. */
Kwv *kwv; /* Its variables and their values. */
unsigned int flags; /* Bit flags. */
Var_ns *prev;
Var_ns *next;
};
typedef Ds *(*Var_resolve)(Var *var, void *, void *, int *);
#ifdef __cplusplus
extern "C" {
#endif
extern int var_ns_is_valid_varname(char *str, char **endp);
extern int var_ns_is_valid_namespace_name(char *str);
extern Var *var_parse_name(char *str, char **endp);
extern Var_ref *var_parse_ref(char *str);
extern Ds *var_expand(char *str, Var_resolve resolve, void *resolve_arg);
extern Ds *var_value(char *str, Var **var, char **endp,
Var_resolve resolve, void *resolve_arg);
extern Var_ns *var_ns_lookup(Var_ns *root, char *ns);
extern Var_ns *var_ns_new(Var_ns **root, char *ns, Kwv *kwv);
extern Var_ns *var_ns_add(Var_ns **root, Var_ns *v);
extern Var_ns *var_ns_create(char *name, Kwv *kwv);
extern int var_ns_replace(Var_ns **root, char *name, Kwv *kwv);
extern Kwv *var_ns_add_key(Var_ns *root, char *ns, char *key, char *val);
extern Kwv *var_ns_add_var(Var_ns *root, char *name, char *key, char *val,
void *xval);
extern int var_ns_delete(Var_ns **root, char *ns);
extern int var_ns_delete_temporaries(Var_ns **root);
extern Kwv_pair *var_ns_get_pair(Var_ns *root, char *ns, char *key);
extern char *var_ns_get_value(Var_ns *root, char *ns, char *key);
extern Kwv *var_ns_lookup_kwv(Var_ns *root, char *ns);
extern char *var_ns_names(Var_ns *root);
extern Var_ns *var_ns_copy(Var_ns *root);
extern Var_ns *var_ns_copy_exclude(Var_ns *root, Dsvec *exclude);
extern char *var_ns_buf(Var_ns *root, char *ns);
extern Var_ns *var_ns_from_env(char *ns_name);
extern char *var_ns_varname(char *ns, char *name);
extern int var_ns_is_readonly(Var_ns *root, char *ns_name);
extern int var_ns_is_reserved(Var_ns *root, char *ns_name);
extern unsigned int var_ns_set_flags(Var_ns *root, char *ns_name,
unsigned int flags);
#ifdef __cplusplus
}
#endif
#endif
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