Index Page errdev_c
A B C D E F G H I J K L M N O P Q R S T U V W X
Procedure Abstract Required_Reading Keywords Brief_I/O Detailed_Input | Detailed_Output Parameters Exceptions Files Particulars Examples | Restrictions Literature_References Author_and_Institution Version Index_Entries
#### Procedure
       void errdev_c ( ConstSpiceChar * op,
                       SpiceInt         lenout,
                       SpiceChar      * device )
#### Abstract
       Retrieve or set the name of the current output
       device for error messages.
#### Required_Reading
       ERROR
#### Keywords
       ERROR
#### Brief_I/O
       VARIABLE  I/O  DESCRIPTION
       --------  ---  --------------------------------------------------
       op         I   The operation:  "GET" or "SET".
       lenout     I   Length of device for output.
       device    I/O  The device name.
#### Detailed_Input
       op      indicates the operation to be performed.  Possible
               values are "GET" and "SET".  "GET" means, "set
               device equal to the name of the current error
               output device"  "SET" means, "set the name of the
               current error output device equal to the value of
               device."

       lenout  the string size of output 'device' when op equals "GET."
               The size described by lenout should be large enough to
               hold all characters of any possible output string
               plus 1 (to accommodate the C null terminator).

       device  is an input when op has the value, "SET".  It
               indicates an output device to which error messages
               are to be sent.  Possible values for device are:

                1.    A file name.  Note that the name must not
                      use one of the reserved strings below.

                2.    "SCREEN"    The output will go to the
                       screen.  This is the default device.

                3.    "NULL"      The data will not be output.

                "SCREEN" and "NULL" can be written in mixed
                case.  For example, the following call will work:

                errdev_c ( "SET", lenout, "screEn" );
#### Detailed_Output
       device  is an output returning the current error output device
               when 'op' equals "GET."  See "Detailed Input"
               descriptions of these values.
#### Parameters
       None.
#### Exceptions
       1) If the input argument op does not indicate a valid operation,
          the error SPICE(INVALIDOPERATION) will be signaled.

       2) When op is "SET", if the input argument device has length greater
          than FILEN characters, the error SPICE(DEVICENAMETOOLONG) will
          be signaled.

       3) The error SPICE(EMPTYSTRING) is signaled if either input string
          does not contain at least one character, since an input string
          cannot be converted to a Fortran-style string in this case.  This
          check always applies to op; it applies to device only when
          device is an input, that is, when op is "SET."

       4) The error SPICE(NULLPOINTER) is signaled if either string pointer
          argument is null.

       5) The caller must pass a value indicating the length of the output
          string, when device is an output.  If this value is not at least
          2, the error SPICE(STRINGTOOSHORT) is signaled.
#### Files
       None.
#### Particulars
       This routine supports spooling of error messages to log files.
#### Examples
       1.  In this example, we select as the output device
           the file, SPUD.DAT.

              /.
              Set the error output device to the file SPUD.DAT:
              ./
              errdev_c ( "SET", lenout, "SPUD.DAT" );
#### Restrictions
       This routine has no capability of determining the validity
       of the name of an output device.  Care must be taken
       to ensure that the file named is the correct one.

       The device name is assumed to be no longer than FILEN characters.
#### Literature_References
       None.
#### Author_and_Institution
       N.J. Bachman    (JPL)
       H.A. Neilan     (JPL)
       E.D. Wright     (JPL)
#### Version
       -CSPICE Version 1.3.1, 25-SEP-2003 (EDW)

          Corrected confusing description of 'lenout' argument.

       -CSPICE Version 1.3.0, 24-JUN-2003 (NJB)

          Bug fix:  case of invalid operation keyword is now
          diagnosed, as per the Exceptions section of the header.

       -CSPICE Version 1.2.0, 28-AUG-1999 (NJB)

          Bug fix:  changed errprt_ call to call to errdev_.

       -CSPICE Version 1.2.0, 09-FEB-1998 (NJB)

          Re-implemented routine without dynamically allocated, temporary
          strings.  Made various header fixes.

       -CSPICE Version 1.0.1, 30-OCT-1997 (EDW)

          Corrected errors in examples in which the call sequence
          was incorrect.

       -CSPICE Version 1.0.0, 25-OCT-1997 (EDW)
#### Index_Entries
       get/set error output device name
#### Link to routine errdev_c source file errdev_c.c

    Wed Jun  9 13:05:23 2010