kdata_c

Index Page kdata_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 kdata_c ( SpiceInt          which,
                      ConstSpiceChar  * kind,
                      SpiceInt          fillen,
                      SpiceInt          typlen,
                      SpiceInt          srclen,
                      SpiceChar       * file,
                      SpiceChar       * filtyp,
                      SpiceChar       * source,
                      SpiceInt        * handle,
                      SpiceBoolean    * found  )
#### Abstract
       Return data for the nth kernel that is among a list of specified
       kernel types.
#### Required_Reading
       None.
#### Keywords
       KERNEL
#### Brief_I/O
       VARIABLE  I/O  DESCRIPTION
       --------  ---  --------------------------------------------------
       which      I   Index of kernel to fetch from the list of kernels.
       kind       I   The kind of kernel to which fetches are limited.
       fillen     I   Available space in output file string.
       typlen     I   Available space in output kernel type string.
       srclen     I   Available space in output source string.
       file       O   The name of the kernel file.
       filtyp     O   The type of the kernel.
       source     O   Name of the source file used to load file.
       handle     O   The handle attached to file.
       found      O   SPICETRUE if the specified file could be located.
#### Detailed_Input
       which      is the number of the kernel to fetch (matching the
                  type specified by kind) from the list of kernels that
                  have been loaded through the entry point furnsh_c but
                  that have not been unloaded through the entry point
                  unload_c.

                  The range of which is 0 to count-1, where count is
                  the number of kernels loaded via furnsh_c.  This
                  count may be obtained by calling ktotal_c.  See the
                  Examples section for an illustrative code fragment.

       kind       is a list of types of kernels to be considered when
                  fetching kernels from the list of loaded kernels. KIND
                  should consist of a list of words of kernels to
                  examine.  Recognized types are

                     SPK  --- All SPK files are counted in the total.
                     CK   --- All CK files are counted in the total.
                     PCK  --- All binary PCK files are counted in the
                              total.
                     EK   --- All EK files are counted in the total.
                     TEXT --- All text kernels that are not meta-text
                              kernels are included in the total.
                     META --- All meta-text kernels are counted in the
                              total.
                     ALL  --- Every type of kernel is counted in the
                              total.

                   kind is case insensitive.  If a word appears in kind
                   that is not one of those listed above it is ignored.

                   See the entry point ktotal_c for examples of the use
                   of kind.

       fillen      is the amount of available space in the output file
                   string, including room for the terminating null.
                   Normally, this is the declared length of the output
                   string.

       typlen      is the amount of available space in the output kernel
                   type string.

       srclen      is the amount of available space in the output kernel
                   source string.
#### Detailed_Output
       file        is the name of the file having index which in the
                   sequence of files of type kind currently loaded via
                   furnsh_c.  file will be blank if there is no such kernel
                   is loaded.

       filtyp      is the type of the kernel specified by file.  filtyp
                   will be empty if there is no file matching the
                   specification of which and kind.

       source      is the name of the source file that was used to
                   specify file as one to load.  If file was loaded
                   directly via a call to furnsh_c, source will be empty.
                   If there is no file matching the specification of
                   which and kind, source will be empty.

       handle      is the handle attached to file if it is a binary
                   kernel.  If file is a text kernel or meta-text kernel
                   handle will be zero.  If there is no file matching
                   the specification of which and kind, handle will be
                   set to zero.

       found       is returned SPICETRUE if a file matching the
                   specification of which and kind exists.  If there is no
                   such file, found will be set to SPICEFALSE.
#### Parameters
       None.
#### Exceptions
       1) If a file is not loaded matching the specification of which
          and kind, found will be SPICEFALSE; file, filtyp, and source
          will be empty and handle will be set to zero.

       2) If any input or output character argument pointer is null, the
          error SPICE(NULLPOINTER) will be signaled.

       3) If any of the output string length arguments are less than 1, the
          error SPICE(STRINGTOOSHORT) will be signaled.

       4) If any output string has length at least 1 but is too short to
          contain the output string, the corresponding is truncated on the
          right.  The output string is still null-terminated.
#### Files
       None.
#### Particulars
       This entry point allows you to determine which kernels have
       been loaded via furnsh_c and to obtain information sufficient
       to directly query those files.
#### Examples
       The following example shows how you could print a summary
       of SPK files that have been loaded through the interface
       furnsh_c.

          #include <stdio.h>
          #include "SpiceUsr.h"

          #define  FILLEN   128
          #define  TYPLEN   32
          #define  SRCLEN   128

          SpiceInt        which;
          SpiceInt        count;
          SpiceInt        handle;

          SpiceChar       file  [FILLEN];
          SpiceChar       filtyp[TYPLEN];
          SpiceChar       source[SRCLEN];

          SpiceBoolean    found;

          int main()
             {
             furnsh_c( "/kernels/standard.tm" );

             ktotal_c ( "spk", &count );

             if ( count == 0 )
                {
                printf ( "No SPK files loaded at this time.\n" );
                }
             else
                {
                printf ( "The loaded SPK files are: \n\n" );
                }

             for ( which = 0;  which < count;  which++ )
                {
                kdata_c ( which,  "spk",    FILLEN,   TYPLEN, SRCLEN,
                          file,   filtyp,  source,  &handle,  &found );
                printf ( "%s\n",  file   );
                }

             }
#### Restrictions
       None.
#### Literature_References
       None.
#### Author_and_Institution
       N.J. Bachman    (JPL)
       W.L. Taber      (JPL)
#### Version
       -CSPICE Version 1.1.3, 02-MAY-2008 (EDW)

          standard.ker renamed standard.tm

       -CSPICE Version 1.1.2, 05-SEP-2007 (EDW)

          Expanded Examples section to a full, compilable program.

       -CSPICE Version 1.1.1, 29-DEC-2004 (LSE)

          Corrected example code to match routine's argument list.
          (2 arguments reversed)

       -CSPICE Version 1.1.0, 02-FEB-2003 (EDW)

          Corrected example code to match routine's argument list.

       -CSPICE Version 1.0.0, 12-SEP-1999 (NJB) (WLT)
#### Index_Entries
       Retrieve information on loaded SPICE kernels
#### Link to routine kdata_c source file kdata_c.c

    Thu Apr 16 08:58:26 2009