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/*
 * Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
 *                         University Research and Technology
 *                         Corporation.  All rights reserved.
 * Copyright (c) 2004-2005 The University of Tennessee and The University
 *                         of Tennessee Research Foundation.  All rights
 *                         reserved.
 * Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
 *                         University of Stuttgart.  All rights reserved.
 * Copyright (c) 2004-2005 The Regents of the University of California.
 *                         All rights reserved.
 * $COPYRIGHT$
 *
 * Additional copyrights may follow
 *
 * $HEADER$
 */

/** @file:
 * Creates an operating system-acceptable path name.
 *
 * The opal_os_path() function takes a variable number of string arguments and
 * concatenates them into a path name using the path separator character appropriate
 * to the local operating system. NOTE: the string returned by this function has been
 * malloc'd - thus, the user is responsible for free'ing the memory used by
 * the string.
 *
 * CRITICAL NOTE: The input variable list MUST be terminated by a NULL value. Failure
 * to do this will cause the program to suffer a catastrophic failure - usually a
 * segmentation violation or bus error.
 *
 * The function calls orte_sys_info() to ensure that the path separator character
 * has been identified. If that value cannot be identified for some reason,
 * the function will return a NULL value. Likewise, specifying a path name that
 * exceeds the maximum allowable path name length on the local system will result
 * in the return of a NULL value.
 *
 *
 */

#ifndef OPAL_OS_PATH_H
#define OPAL_OS_PATH_H

#include "opal_config.h"

#include <stdio.h>
#include <stdarg.h>

BEGIN_C_DECLS

/**
 * @param relative A boolean that specifies if the path name is to be constructed
 * relative to the current directory or as an absolute path. If no path
 * elements are included in the function call, then the function returns
 * "." for a relative path name and "<path separator char>" -
 * the top of the directory tree - for an absolute path name.
 * @param elem1,elem2,... A variable number of (char *)path_elements
 * can be provided to the function, terminated by a NULL value. These
 * elements will be concatenated, each separated by the path separator
 * character, into a path name and returned.
 * @retval path_name A pointer to a fully qualified path name composed of the
 * provided path elements, separated by the path separator character
 * appropriate to the local operating system. The path_name string has been malloc'd
 * and therefore the user is responsible for free'ing the field.
*/
OPAL_DECLSPEC char *opal_os_path(bool relative, ...) __opal_attribute_malloc__ __opal_attribute_sentinel__ __opal_attribute_warn_unused_result__;

/**
 * Convert the path to be OS friendly. On UNIX this function will
 * be empty.
 */
#define opal_make_filename_os_friendly(PATH)   (PATH)

END_C_DECLS

#endif /* OPAL_OS_PATH_H */