osprey/libf/pxf/pxfctermid.c

Go to the documentation of this file.

/*

  Copyright (C) 2000, 2001 Silicon Graphics, Inc.  All Rights Reserved.

  This program is free software; you can redistribute it and/or modify it
  under the terms of version 2.1 of the GNU Lesser General Public License 
  as published by the Free Software Foundation.

  This program is distributed in the hope that it would be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  

  Further, this software is distributed without any warranty that it is
  free of the rightful claim of any third person regarding infringement 
  or the like.  Any license provided herein, whether implied or 
  otherwise, applies only to this software file.  Patent licenses, if
  any, provided herein do not apply to combinations of this program with 
  other software, or any other product whatsoever.  

  You should have received a copy of the GNU Lesser General Public 
  License along with this program; if not, write the Free Software 
  Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, 
  USA.

  Contact information:  Silicon Graphics, Inc., 1600 Amphitheatre Pky,
  Mountain View, CA 94043, or:

  http://www.sgi.com

  For further information regarding this notice, see:

  http://oss.sgi.com/projects/GenInfo/NoticeExplan

*/


#pragma ident "@(#) libf/pxf/pxfctermid.c 92.1  06/29/99 11:36:06"


#include <errno.h>
#include <liberrno.h>
#include <fortran.h>
#include <stdio.h>
#include <string.h>

#define BLANK ((int) ' ')

/*
 *  PXFCTERMID  -- Gernerate Terminal Pathname
 *  (section 4.7.1 of Posix 1003.9-1992)
 *
 *  Synopsis:
 *
 *     SUBROUTINE PXFCTERMID(S,ILEN,IERROR)
 *     CHARACTER*(*) S
 *     INTEGER ILEN,IERROR
 *
 *  Function description:
 *
 *     The routine PXFCTERMID uses ctermid() [(3S) on IRIX and Solaris
 *     systems and (3C) on UNICOS systems] to generate a string which
 *     is the pathname for the current process' controlling terminal.
 *     If the pathname for the controlling terminal cannot be determined,
 *     the ILEN variable is set to zero.
 *
 *  Description of Arguments:
 *
 *     S      is an output character array or character element variable
 *            for the pathname for the current process' controlling
 *            terminal.
 *
 *     ILEN   is an output interger variable for the length of S.
 *
 *     IERROR is an output integer variable for the completion status of
 *            PXFCTERMID. IERROR may contain:
 *
 *             zero    - PXFCTERMID was successful.
 *
 *             nonzero - PXFCTERMID was not successful.
 *
 *            PXFCTERMID may return any of the following error
 *            values:
 *
 *             ETRUNC If the output variable S cannot contain the pathname
 *                    for the current process' controlling termina and so
 *                    the pathname was truncated.
 *
 *
 */

#ifdef _UNICOS
void
PXFCTERMID(
#else
void
_PXFCTERMID(
#endif
      _fcd S,
      _f_int *ILEN,
      _f_int *IERROR
)
{
  int sptrlen, slen, copylen;
  char *sptr;

  slen = _fcdlen(S);
  *IERROR = 0;

  if ((sptr = ctermid(NULL)) == NULL) {
    /* cannot determine controlling terminal for current process */
    *ILEN = 0;
  } else {
    /* check for truncation error condition */
    sptrlen = strlen(sptr);
    *ILEN = sptrlen;
    if (sptrlen > slen) {
      *IERROR = ETRUNC;
      copylen = slen;
    } else {
      copylen = sptrlen;
    }

    /* copy the string */
    (void)memcpy(_fcdtocp(S), sptr, copylen*sizeof(char));
    (void)memset(_fcdtocp(S) + sizeof(char)*copylen, BLANK,
     (slen-copylen)*sizeof(char));
  }
}

#ifndef _UNICOS
void
pxfctermid_(
      char *S,
      _f_int *ILEN,
      _f_int *IERROR,
      _f_int slen
)
{
  _PXFCTERMID(_cptofcd(S,slen), ILEN, IERROR);
}
#endif

---