/** \file env_universal.h
	Universal variable client library
*/

#ifndef ENV_UNIVERSAL_H
#define ENV_UNIVERSAL_H

#include <wchar.h>

#include "env_universal_common.h"

/**
   Data about the universal variable server.
*/
extern connection_t env_universal_server;

/**
   Initialize the envuni library
*/
void env_universal_init();
/**
  Free memory used by envuni
*/
void env_universal_destroy();

/**
   Get the value of a universal variable
*/
wchar_t *env_universal_get( const wchar_t *name );

/**
   Get the export flag of the variable with the specified
   name. Returns 0 if the variable doesn't exist.
*/
int env_universal_get_export( const wchar_t *name );

/**
   Set the value of a universal variable
*/
void env_universal_set( const wchar_t *name, const wchar_t *val, int export );
/**
   Erase a universal variable
   
   \return zero if the variable existed, and non-zero if the variable did not exist
*/
int env_universal_remove( const wchar_t *name );

/**
   Read all available messages from the server.
*/
int env_universal_read_all();

/**
   Get the names of all universal variables
   
   \param l the list to insert the names into
   \param show_exported whether exported variables should be shown
   \param show_unexported whether unexported variables should be shown
*/
void env_universal_get_names( array_list_t *l,
							  int show_exported,
							  int show_unexported );

/**
   Synchronize with fishd
*/
void env_universal_barrier();

#endif