/* fn2lun.f -- translated by f2c (version 19980913). You must link the resulting object file with the libraries: -lf2c -lm (in that order) */ #include "f2c.h" /* $Procedure FN2LUN ( Map name of open file to its logical unit. ) */ /* Subroutine */ int fn2lun_(char *filnam, integer *lunit, ftnlen filnam_len) { /* System generated locals */ inlist ioin__1; /* Builtin functions */ integer s_cmp(char *, char *, ftnlen, ftnlen), f_inqu(inlist *); /* Local variables */ extern /* Subroutine */ int chkin_(char *, ftnlen), errch_(char *, char *, ftnlen, ftnlen); logical opened; extern /* Subroutine */ int sigerr_(char *, ftnlen), chkout_(char *, ftnlen), setmsg_(char *, ftnlen); integer iostat; extern /* Subroutine */ int errint_(char *, integer *, ftnlen); extern logical return_(void); logical exists; /* $ Abstract */ /* Map the name of an open file to its associated logical unit. */ /* $ Disclaimer */ /* THIS SOFTWARE AND ANY RELATED MATERIALS WERE CREATED BY THE */ /* CALIFORNIA INSTITUTE OF TECHNOLOGY (CALTECH) UNDER A U.S. */ /* GOVERNMENT CONTRACT WITH THE NATIONAL AERONAUTICS AND SPACE */ /* ADMINISTRATION (NASA). THE SOFTWARE IS TECHNOLOGY AND SOFTWARE */ /* PUBLICLY AVAILABLE UNDER U.S. EXPORT LAWS AND IS PROVIDED "AS-IS" */ /* TO THE RECIPIENT WITHOUT WARRANTY OF ANY KIND, INCLUDING ANY */ /* WARRANTIES OF PERFORMANCE OR MERCHANTABILITY OR FITNESS FOR A */ /* PARTICULAR USE OR PURPOSE (AS SET FORTH IN UNITED STATES UCC */ /* SECTIONS 2312-2313) OR FOR ANY PURPOSE WHATSOEVER, FOR THE */ /* SOFTWARE AND RELATED MATERIALS, HOWEVER USED. */ /* IN NO EVENT SHALL CALTECH, ITS JET PROPULSION LABORATORY, OR NASA */ /* BE LIABLE FOR ANY DAMAGES AND/OR COSTS, INCLUDING, BUT NOT */ /* LIMITED TO, INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY KIND, */ /* INCLUDING ECONOMIC DAMAGE OR INJURY TO PROPERTY AND LOST PROFITS, */ /* REGARDLESS OF WHETHER CALTECH, JPL, OR NASA BE ADVISED, HAVE */ /* REASON TO KNOW, OR, IN FACT, SHALL KNOW OF THE POSSIBILITY. */ /* RECIPIENT BEARS ALL RISK RELATING TO QUALITY AND PERFORMANCE OF */ /* THE SOFTWARE AND ANY RELATED MATERIALS, AND AGREES TO INDEMNIFY */ /* CALTECH AND NASA FOR ALL THIRD-PARTY CLAIMS RESULTING FROM THE */ /* ACTIONS OF RECIPIENT IN THE USE OF THE SOFTWARE. */ /* $ Required_Reading */ /* None. */ /* $ Keywords */ /* FILES */ /* $ Declarations */ /* $ Brief_I/O */ /* VARIABLE I/O DESCRIPTION */ /* -------- --- -------------------------------------------------- */ /* FILNAM I Name of the file to be mapped to its logical unit. */ /* LUNIT O The logical unit associated with the filename. */ /* $ Detailed_Input */ /* FILNAM is the filename that is to be mapped to its associated */ /* Fortran logical unit. */ /* $ Detailed_Output */ /* LUNIT is the Fortran logical unit that is associated with the */ /* filename FILNAM. The file must be open for this routine */ /* to work properly. */ /* $ Parameters */ /* None. */ /* $ Exceptions */ /* 1) If the filename is blank, the error SPICE(BLANKFILENAME) will */ /* be signalled. */ /* 2) If an error occurs during the execution of the Fortran INQUIRE */ /* statement, the error SPICE(INQUIREFAILED) is signalled. */ /* 3) If the filename is not associated with an open file, the */ /* error SPICE(FILENOTOPEN) will be signalled. */ /* 4) If the filename is not associated with an existing file, the */ /* error SPICE(FILEDOESNOTEXIST) will be signalled. */ /* 5) In the event of an error the contents of the variable LUNIT */ /* are not defined, and should not be used. */ /* $ Files */ /* None. */ /* $ Particulars */ /* Use the Fortran INQUIRE statement to determine the filename */ /* that is associated with the Fortran logical unit LUNIT. */ /* $ Examples */ /* The following code fragment illustrates the use of FN2LUN. */ /* C */ /* C Convert the logical unit to its filename and display it. */ /* C */ /* CALL FN2LUN ( FNAME, LUNIT ) */ /* WRITE (*,*) 'The logical unit is: ', LUNIT */ /* $ Restrictions */ /* None. */ /* $ Author_and_Institution */ /* K.R. Gehringer (JPL) */ /* $ Literature_References */ /* None. */ /* $ Version */ /* - SPICELIB Version 1.0.0, 16-AUG-1994 (KRG) */ /* -& */ /* $ Index_Entries */ /* map filename to logical unit */ /* -& */ /* SPICELIB functions */ /* Local variables */ /* Standard SPICE error handling. */ if (return_()) { return 0; } else { chkin_("FN2LUN", (ftnlen)6); } /* First we test to see if the filename is blank. */ if (s_cmp(filnam, " ", filnam_len, (ftnlen)1) == 0) { setmsg_("The filename is blank.", (ftnlen)22); sigerr_("SPICE(BLANKFILENAME)", (ftnlen)20); chkout_("FN2LUN", (ftnlen)6); return 0; } /* So simple, it defies explanation: just INQUIRE. */ ioin__1.inerr = 1; ioin__1.infilen = filnam_len; ioin__1.infile = filnam; ioin__1.inex = &exists; ioin__1.inopen = &opened; ioin__1.innum = &*lunit; ioin__1.innamed = 0; ioin__1.inname = 0; ioin__1.inacc = 0; ioin__1.inseq = 0; ioin__1.indir = 0; ioin__1.infmt = 0; ioin__1.inform = 0; ioin__1.inunf = 0; ioin__1.inrecl = 0; ioin__1.innrec = 0; ioin__1.inblank = 0; iostat = f_inqu(&ioin__1); if (iostat != 0) { setmsg_("INQUIRE error on file '#'. The value of IOSTAT is: #.", ( ftnlen)53); errch_("#", filnam, (ftnlen)1, filnam_len); errint_("#", &iostat, (ftnlen)1); sigerr_("SPICE(INQUIREFAILED)", (ftnlen)20); chkout_("FN2LUN", (ftnlen)6); return 0; } /* A file cannot be open if it does not exist. We need to check this */ /* because for some environments files are considered to be open if */ /* they do not exist. */ if (! exists) { setmsg_("No file with the name '#' was found.", (ftnlen)36); errch_("#", filnam, (ftnlen)1, filnam_len); sigerr_("SPICE(FILEDOESNOTEXIST)", (ftnlen)23); chkout_("FN2LUN", (ftnlen)6); return 0; } /* Now check to see if the file is opened. If not, then it is an */ /* error, there cannot be a logical unit associated with it.. */ if (! opened) { setmsg_("There was not an open file associated with the filename '#'." , (ftnlen)60); errch_("#", filnam, (ftnlen)1, filnam_len); sigerr_("SPICE(FILENOTOPEN)", (ftnlen)18); chkout_("FN2LUN", (ftnlen)6); return 0; } chkout_("FN2LUN", (ftnlen)6); return 0; } /* fn2lun_ */