/*
 * Copyright (c) 2005 Sandia Corporation. Under the terms of Contract
 * DE-AC04-94AL85000 with Sandia Corporation, the U.S. Governement
 * retains certain rights in this software.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 * 
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 * 
 *     * Redistributions in binary form must reproduce the above
 *       copyright notice, this list of conditions and the following
 *       disclaimer in the documentation and/or other materials provided
 *       with the distribution.  
 * 
 *     * Neither the name of Sandia Corporation nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 */
/*****************************************************************************
*
* testrd - read exodus file test.exo created by testwt
*
* author - Sandia National Laboratories
*          Larry A. Schoof - Original
*
*          
* environment - UNIX
*
* entry conditions - 
*   input parameters:
*       int     exoid                   exodus file id
*
* exit conditions - 
*
* revision history - 
*
*
*****************************************************************************/

#include <stdlib.h>
#include <stdio.h>
#include "netcdf.h"
#include "exodusII.h"
/* #include "drmd.h" */


int main (int argc, char **argv)
{
   int exoid, num_dim, num_nodes, num_elem, num_elem_blk, num_node_sets;
   int num_side_sets, error;
   int i, j, k, node_ctr;
   int *elem_map, *connect, *node_list, *node_ctr_list, *elem_list, *side_list;
   int *ids; 
   int *num_nodes_per_set, *num_elem_per_set;
   int *num_df_per_set;
   int *node_ind, *elem_ind, *df_ind, num_qa_rec, num_info;
   int num_glo_vars, num_nod_vars, num_ele_vars;
   int *truth_tab;
   int num_time_steps;
   int *num_elem_in_block, *num_nodes_per_elem, *num_attr;
   int num_nodes_in_set, num_elem_in_set;
   int num_sides_in_set, num_df_in_set;
   int list_len = 0;
   int elem_list_len = 0;
   int node_list_len = 0;
   int df_list_len = 0;
   int node_num, time_step, var_index, beg_time, end_time, elem_num;
   int CPU_word_size,IO_word_size;
   int num_props, prop_value, *prop_values;
   int idum;

   float time_value, *time_values, *var_values;
   float *xyz;
   float *attrib, *dist_fact;
   float version, fdum;

   char *coord_names[3], *qa_record[2][4], *info[3], *var_names[3];
   char title[MAX_LINE_LENGTH+1], elem_type[MAX_STR_LENGTH+1];
   char *cdum = 0;
   char *prop_names[3];

   CPU_word_size = 0;                   /* sizeof(float) */
   IO_word_size = 0;                    /* use what is stored in file */

   ex_opts (EX_VERBOSE | EX_ABORT );

/* open EXODUS II files */

   exoid = ex_open ("test.exo",         /* filename path */
                     EX_READ,           /* access mode = READ */
                     &CPU_word_size,    /* CPU word size */
                     &IO_word_size,     /* IO word size */
                     &version);         /* ExodusII library version */

   printf ("\nafter ex_open\n");
   if (exoid < 0) exit(1);

   printf ("test.exo is an EXODUSII file; version %4.2f\n",
            version);
/*   printf ("         CPU word size %1d\n",CPU_word_size);  */
   printf ("         I/O word size %1d\n",IO_word_size);
   ex_inquire(exoid,EX_INQ_API_VERS, &idum, &version, cdum);
   printf ("EXODUSII API; version %4.2f\n", version);

   /* ncopts = NC_VERBOSE; */

/* read database parameters */

   error = ex_get_init (exoid, title, &num_dim, &num_nodes, &num_elem,
                        &num_elem_blk, &num_node_sets, &num_side_sets);

   printf ("after ex_get_init, error = %3d\n", error);

   printf ("database parameters:\n");
   printf ("title =  '%s'\n",title);
   printf ("num_dim = %3d\n",num_dim);
   printf ("num_nodes = %3d\n",num_nodes);
   printf ("num_elem = %3d\n",num_elem);
   printf ("num_elem_blk = %3d\n",num_elem_blk);
   printf ("num_node_sets = %3d\n",num_node_sets);
   printf ("num_side_sets = %3d\n",num_side_sets);

/* read nodal coordinates values and names from database */

   xyz = (float *) calloc(num_nodes, sizeof(float));

   printf ("\nafter ex_get_coord, error = %3d\n", error);

   error = ex_get_coord (exoid, xyz, NULL, NULL);
   printf ("\nafter ex_get_coord (x), error = %3d\n", error);
   printf ("x coords = \n");
   for (i=0; i<num_nodes; i++)
   {
     printf ("%5.1f\n", xyz[i]);
   }

   error = ex_get_coord (exoid, NULL, xyz, NULL);
   printf ("\nafter ex_get_coord (y), error = %3d\n", error);
   printf ("y coords = \n");
   for (i=0; i<num_nodes; i++)
   {
     printf ("%5.1f\n", xyz[i]);
   }

   error = ex_get_coord (exoid, NULL, NULL, xyz);
   printf ("\nafter ex_get_coord (z), error = %3d\n", error);
   if (num_dim >= 3)
   {
     printf ("z coords = \n");
     for (i=0; i<num_nodes; i++)
     {
        printf ("%5.1f\n", xyz[i]);
     }
   }

/*
   error = ex_get_1_coord (exoid, 2, x, y, z);
   printf ("\nafter ex_get_1_coord, error = %3d\n", error);

   printf ("x coord of node 2 = \n");
   printf ("%f \n", x[0]);

   printf ("y coord of node 2 = \n");
   printf ("%f \n", y[0]);
*/
   free (xyz);

   for (i=0; i<num_dim; i++)
   {
      coord_names[i] = (char *) calloc ((MAX_STR_LENGTH+1), sizeof(char));
   }

   error = ex_get_coord_names (exoid, coord_names);
   printf ("\nafter ex_get_coord_names, error = %3d\n", error);

   printf ("x coord name = '%s'\n", coord_names[0]);
   printf ("y coord name = '%s'\n", coord_names[1]);

   for (i=0; i<num_dim; i++)
     free(coord_names[i]);


/* read element order map */

   elem_map = (int *) calloc(num_elem, sizeof(int));

   error = ex_get_map (exoid, elem_map);
   printf ("\nafter ex_get_map, error = %3d\n", error);

   for (i=0; i<num_elem; i++)
   {
      printf ("elem_map(%d) = %d \n", i, elem_map[i]);
   }

   free (elem_map);

/* read element block parameters */

   ids = (int *) calloc(num_elem_blk, sizeof(int));
   num_elem_in_block = (int *) calloc(num_elem_blk, sizeof(int));
   num_nodes_per_elem = (int *) calloc(num_elem_blk, sizeof(int));
   num_attr = (int *) calloc(num_elem_blk, sizeof(int));

   error = ex_get_elem_blk_ids (exoid, ids);
   printf ("\nafter ex_get_elem_blk_ids, error = %3d\n", error);
   
   for (i=0; i<num_elem_blk; i++)
   {
     error = ex_get_elem_block (exoid, ids[i], elem_type,
                                &(num_elem_in_block[i]), 
                                &(num_nodes_per_elem[i]), &(num_attr[i]));
     printf ("\nafter ex_get_elem_block, error = %d\n", error);

     printf ("element block id = %2d\n",ids[i]);
     printf ("element type = '%s'\n", elem_type);
     printf ("num_elem_in_block = %2d\n",num_elem_in_block[i]);
     printf ("num_nodes_per_elem = %2d\n",num_nodes_per_elem[i]);
     printf ("num_attr = %2d\n",num_attr[i]);
   }

   /* read element block properties */
   error = ex_inquire (exoid, EX_INQ_EB_PROP, &num_props, &fdum, cdum);
   printf ("\nafter ex_inquire, error = %d\n", error);
   printf ("\nThere are %2d properties for each element block\n", num_props);

   for (i=0; i<num_props; i++)
   {
      prop_names[i] = (char *) calloc ((MAX_STR_LENGTH+1), sizeof(char));
   }

   error = ex_get_prop_names(exoid,EX_ELEM_BLOCK,prop_names);
   printf ("after ex_get_prop_names, error = %d\n", error);


   for (i=0; i<num_props; i++)
   {
     for (j=0; j<num_elem_blk; j++)
     {
       error = ex_get_prop(exoid, EX_ELEM_BLOCK, ids[j], prop_names[i],
                           &prop_value);
       if (error == 0)
         printf ("element block %2d, property(%2d): '%s'= %5d\n",
                  j+1, i+1, prop_names[i], prop_value);
       else
         printf ("after ex_get_prop, error = %d\n", error);
     }
   }

   for (i=0; i<num_props; i++)
     free(prop_names[i]);

/* read element connectivity */

   for (i=0; i<num_elem_blk; i++)
   {
      connect = (int *) calloc((num_nodes_per_elem[i] * num_elem_in_block[i]), 
                                sizeof(int));

      error = ex_get_elem_conn (exoid, ids[i], connect);
      printf ("\nafter ex_get_elem_conn, error = %d\n", error);


      printf ("connect array for elem block %2d\n", ids[i]);

      for (j=0; j<num_nodes_per_elem[i]; j++)
      {
         printf ("%3d\n", connect[j]);
      }
/*
      error = ex_get_1_elem_conn (exoid, 1, ids[i], connect);
      printf ("\nafter ex_get_elem_conn, error = %d\n", error);

      printf ("node list for first element of element block %d \n ", ids[i]);
      for (j=0; j<num_nodes_per_elem[i]; j++)
      {
         printf ("%d \n", connect[j]);
      }
*/
      free (connect);

   }

/* read element block attributes */

   for (i=0; i<num_elem_blk; i++)
   {
      attrib = (float *) calloc(num_attr[i]*num_elem_in_block[i],sizeof(float));
      error = ex_get_elem_attr (exoid, ids[i], attrib);
      printf ("\n after ex_get_elem_attr, error = %d\n", error);

      if (error == 0)
         printf ("element block %d attributes = %6.4f\n", ids[i], *attrib);
      free (attrib);
   }

   free (ids);
   free (num_nodes_per_elem);
   free (num_attr);

/* read individual node sets */

   ids = (int *) calloc(num_node_sets, sizeof(int));

   error = ex_get_node_set_ids (exoid, ids);
   printf ("\nafter ex_get_node_set_ids, error = %3d\n", error);

   for (i=0; i<num_node_sets; i++)
   {
      error = ex_get_node_set_param (exoid, ids[i], 
                                        &num_nodes_in_set, &num_df_in_set);
      printf ("\nafter ex_get_node_set_param, error = %3d\n", error);

      printf ("\nnode set %2d parameters: \n", ids[i]);
      printf ("num_nodes = %2d\n", num_nodes_in_set);

      node_list = (int *) calloc(num_nodes_in_set, sizeof(int));
      dist_fact = (float *) calloc(num_nodes_in_set, sizeof(float));

      error = ex_get_node_set (exoid, ids[i], node_list);
      printf ("\nafter ex_get_node_set, error = %3d\n", error);

      if (num_df_in_set > 0)
      {
        error = ex_get_node_set_dist_fact (exoid, ids[i], dist_fact);
        printf ("\nafter ex_get_node_set_dist_fact, error = %3d\n", error);
      }

      printf ("\nnode list for node set %2d\n", ids[i]);

      for (j=0; j<num_nodes_in_set; j++)
      {
         printf ("%3d\n", node_list[j]);
      }

      if (num_df_in_set > 0)
      {
        printf ("dist factors for node set %2d\n", ids[i]);

        for (j=0; j<num_nodes_in_set; j++)
        {
          printf ("%5.2f\n", dist_fact[j]);
        }
      }
      else
        printf ("no dist factors for node set %2d\n", ids[i]);

      free (node_list);
      free (dist_fact);
   }
   free(ids);

   /* read node set properties */
   error = ex_inquire (exoid, EX_INQ_NS_PROP, &num_props, &fdum, cdum);
   printf ("\nafter ex_inquire, error = %d\n", error);
   printf ("\nThere are %2d properties for each node set\n", num_props);

   for (i=0; i<num_props; i++)
   {
      prop_names[i] = (char *) calloc ((MAX_STR_LENGTH+1), sizeof(char));
   }
   prop_values = (int *) calloc (num_node_sets, sizeof(int));

   error = ex_get_prop_names(exoid,EX_NODE_SET,prop_names);
   printf ("after ex_get_prop_names, error = %d\n", error);


   for (i=0; i<num_props; i++)
   {
     error = ex_get_prop_array(exoid, EX_NODE_SET, prop_names[i],
                         prop_values);
     if (error == 0)
       for (j=0; j<num_node_sets; j++)
         printf ("node set %2d, property(%2d): '%s'= %5d\n",
                  j+1, i+1, prop_names[i], prop_values[j]);
     else
       printf ("after ex_get_prop_array, error = %d\n", error);
   }
   for (i=0; i<num_props; i++)
     free(prop_names[i]);
   free(prop_values);

/* read concatenated node sets; this produces the same information as
 * the above code which reads individual node sets
 */

   error = ex_inquire (exoid, EX_INQ_NODE_SETS, &num_node_sets, &fdum, cdum);
   printf ("\nafter ex_inquire, error = %3d\n",error);

   ids = (int *) calloc(num_node_sets, sizeof(int));
   num_nodes_per_set = (int *) calloc(num_node_sets, sizeof(int));
   num_df_per_set = (int *) calloc(num_node_sets, sizeof(int));
   node_ind = (int *) calloc(num_node_sets, sizeof(int));
   df_ind = (int *) calloc(num_node_sets, sizeof(int));

   error = ex_inquire (exoid, EX_INQ_NS_NODE_LEN, &list_len, &fdum, cdum);
   printf ("\nafter ex_inquire: EX_INQ_NS_NODE_LEN = %d, error = %3d\n",
            list_len, error);
   node_list = (int *) calloc(list_len, sizeof(int));

   error = ex_inquire (exoid, EX_INQ_NS_DF_LEN, &list_len, &fdum, cdum);
   printf ("\nafter ex_inquire: EX_INQ_NS_DF_LEN = %d, error = %3d\n",
            list_len, error);
   dist_fact = (float *) calloc(list_len, sizeof(float));

   error = ex_get_concat_node_sets (exoid,ids,num_nodes_per_set,num_df_per_set,
                                    node_ind, df_ind, node_list, dist_fact);
   printf ("\nafter ex_get_concat_node_sets, error = %3d\n", error);

   printf ("\nconcatenated node set info\n");

   printf ("ids = \n");
   for (i=0; i<num_node_sets; i++) printf ("%3d\n", ids[i]);

   printf ("num_nodes_per_set = \n");
   for (i=0; i<num_node_sets; i++) printf ("%3d\n", num_nodes_per_set[i]);

   printf ("node_ind = \n");
   for (i=0; i<num_node_sets; i++) printf ("%3d\n", node_ind[i]);

   printf ("node_list = \n");
   for (i=0; i<list_len; i++) printf ("%3d\n", node_list[i]);

   printf ("dist_fact = \n");
   for (i=0; i<list_len; i++) printf ("%5.3f\n", dist_fact[i]);

   free (ids);
   free (num_nodes_per_set);
   free (df_ind);
   free (node_ind);
   free (num_df_per_set);
   free (node_list);
   free (dist_fact);


/* read individual side sets */

   ids = (int *) calloc(num_side_sets, sizeof(int));

   error = ex_get_side_set_ids (exoid, ids);
   printf ("\nafter ex_get_side_set_ids, error = %3d\n", error);

   for (i=0; i<num_side_sets; i++)
   {
      error = ex_get_side_set_param (exoid, ids[i], &num_sides_in_set, 
                                     &num_df_in_set);
      printf ("\nafter ex_get_side_set_param, error = %3d\n", error);

      printf ("side set %2d parameters:\n",ids[i]);
      printf ("num_sides = %3d\n",num_sides_in_set);
      printf ("num_dist_factors = %3d\n", num_df_in_set);


      /* Note: The # of elements is same as # of sides!  */
      num_elem_in_set = num_sides_in_set;
      elem_list = (int *) calloc(num_elem_in_set, sizeof(int));
      side_list = (int *) calloc(num_sides_in_set, sizeof(int));
      node_ctr_list = (int *) calloc(num_elem_in_set, sizeof(int));
      node_list = (int *) calloc(num_elem_in_set*21, sizeof(int));
      dist_fact = (float *) calloc(num_df_in_set, sizeof(float));

      error = ex_get_side_set (exoid, ids[i], elem_list, side_list);
      printf ("\nafter ex_get_side_set, error = %3d\n", error);

      error = ex_get_side_set_node_list (exoid, ids[i], node_ctr_list,
                                         node_list);
      printf ("\nafter ex_get_side_set_node_list, error = %3d\n", error);

      if (num_df_in_set > 0)
      {
        error = ex_get_side_set_dist_fact (exoid, ids[i], dist_fact);
        printf ("\nafter ex_get_side_set_dist_fact, error = %3d\n", error);
      }

      printf ("element list for side set %2d\n", ids[i]);
      for (j=0; j<num_elem_in_set; j++)
      {
         printf ("%3d\n", elem_list[j]);
      }

      printf ("side list for side set %2d\n", ids[i]);
      for (j=0; j<num_sides_in_set; j++)
      {
         printf ("%3d\n", side_list[j]);
      }

      node_ctr = 0;
      printf ("node list for side set %2d\n", ids[i]);
      for (k=0; k<num_elem_in_set; k++)
      {
        for (j=0; j<node_ctr_list[k]; j++)
        {
          printf ("%3d\n", node_list[node_ctr+j]);
        }
        node_ctr += node_ctr_list[k];
      }

      if (num_df_in_set > 0)
      {
        printf ("dist factors for side set %2d\n", ids[i]);

        for (j=0; j<num_df_in_set; j++)
        {
           printf ("%5.3f\n", dist_fact[j]);
        }
      }
      else
        printf ("no dist factors for side set %2d\n", ids[i]);

      free (elem_list);
      free (side_list);
      free (node_ctr_list);
      free (node_list);
      free (dist_fact);

   }

   /* read side set properties */
   error = ex_inquire (exoid, EX_INQ_SS_PROP, &num_props, &fdum, cdum);
   printf ("\nafter ex_inquire, error = %d\n", error);
   printf ("\nThere are %2d properties for each side set\n", num_props);

   for (i=0; i<num_props; i++)
   {
      prop_names[i] = (char *) calloc ((MAX_STR_LENGTH+1), sizeof(char));
   }

   error = ex_get_prop_names(exoid,EX_SIDE_SET,prop_names);
   printf ("after ex_get_prop_names, error = %d\n", error);


   for (i=0; i<num_props; i++)
   {
     for (j=0; j<num_side_sets; j++)
     {
       error = ex_get_prop(exoid, EX_SIDE_SET, ids[j], prop_names[i],
                           &prop_value);
       if (error == 0)
         printf ("side set %2d, property(%2d): '%s'= %5d\n",
                  j+1, i+1, prop_names[i], prop_value);
       else
         printf ("after ex_get_prop, error = %d\n", error);
     }
   }
   for (i=0; i<num_props; i++)
     free(prop_names[i]);
   free (ids);

   error = ex_inquire (exoid, EX_INQ_SIDE_SETS, &num_side_sets, &fdum, cdum);
   printf ("\nafter ex_inquire: EX_INQ_SIDE_SETS = %d,  error = %d\n",
            num_side_sets, error);

   if (num_side_sets > 0)
   {
     error = ex_inquire(exoid, EX_INQ_SS_ELEM_LEN, &elem_list_len, &fdum, cdum);
     printf ("\nafter ex_inquire: EX_INQ_SS_ELEM_LEN = %d,  error = %d\n",
              elem_list_len, error);

     error = ex_inquire(exoid, EX_INQ_SS_NODE_LEN, &node_list_len, &fdum, cdum);
     printf ("\nafter ex_inquire: EX_INQ_SS_NODE_LEN = %d,  error = %d\n",
              node_list_len, error);

     error = ex_inquire(exoid, EX_INQ_SS_DF_LEN, &df_list_len, &fdum, cdum);
     printf ("\nafter ex_inquire: EX_INQ_SS_DF_LEN = %d,  error = %d\n",
              df_list_len, error);
   }

/* read concatenated side sets; this produces the same information as
 * the above code which reads individual side sets
 */

/* concatenated side set read */

   ids = (int *) calloc(num_side_sets, sizeof(int));
   num_elem_per_set = (int *) calloc(num_side_sets, sizeof(int));
   num_df_per_set = (int *) calloc(num_side_sets, sizeof(int));
   elem_ind = (int *) calloc(num_side_sets, sizeof(int));
   df_ind = (int *) calloc(num_side_sets, sizeof(int));
   elem_list = (int *) calloc(elem_list_len, sizeof(int));
   side_list = (int *) calloc(elem_list_len, sizeof(int));
   dist_fact = (float *) calloc(df_list_len, sizeof(float));

   error = ex_get_concat_side_sets (exoid, ids, num_elem_per_set, 
                                    num_df_per_set, elem_ind, df_ind, 
                                    elem_list, side_list, dist_fact);
   printf ("\nafter ex_get_concat_side_sets, error = %3d\n", error);

   printf ("concatenated side set info\n");

   printf ("ids = \n");
   for (i=0; i<num_side_sets; i++) printf ("%3d\n", ids[i]);

   printf ("num_elem_per_set = \n");
   for (i=0; i<num_side_sets; i++) printf ("%3d\n", num_elem_per_set[i]);

   printf ("num_dist_per_set = \n");
   for (i=0; i<num_side_sets; i++) printf ("%3d\n", num_df_per_set[i]);

   printf ("elem_ind = \n");
   for (i=0; i<num_side_sets; i++) printf ("%3d\n", elem_ind[i]);

   printf ("dist_ind = \n");
   for (i=0; i<num_side_sets; i++) printf ("%3d\n", df_ind[i]);

   printf ("elem_list = \n");
   for (i=0; i<elem_list_len; i++) printf ("%3d\n", elem_list[i]);

   printf ("side_list = \n");
   for (i=0; i<elem_list_len; i++) printf ("%3d\n", side_list[i]);

   printf ("dist_fact = \n");
   for (i=0; i<df_list_len; i++) printf ("%5.3f\n", dist_fact[i]);

   free (ids);
   free (num_elem_per_set);
   free (num_df_per_set);
   free (df_ind);
   free (elem_ind);
   free (elem_list);
   free (side_list);
   free (dist_fact);

/* end of concatenated side set read */

/* read QA records */

   ex_inquire (exoid, EX_INQ_QA, &num_qa_rec, &fdum, cdum);

   for (i=0; i<num_qa_rec; i++)
   {
      for (j=0; j<4; j++)
      {
         qa_record[i][j] = (char *) calloc ((MAX_STR_LENGTH+1), sizeof(char));
      }
   }

   error = ex_get_qa (exoid, qa_record); 
   printf ("\nafter ex_get_qa, error = %3d\n", error);

   printf ("QA records = \n");
   for (i=0; i<num_qa_rec; i++) 
   {
     for (j=0; j<4; j++)
     {
       printf (" '%s'\n", qa_record[i][j]);
       free(qa_record[i][j]);
     }
   }

/* read information records */

   error = ex_inquire (exoid, EX_INQ_INFO, &num_info, &fdum, cdum);
   printf ("\nafter ex_inquire, error = %3d\n", error);

   for (i=0; i<num_info; i++)
   {
      info[i] = (char *) calloc ((MAX_LINE_LENGTH+1), sizeof(char));
   }

   error = ex_get_info (exoid, info); 
   printf ("\nafter ex_get_info, error = %3d\n", error);

   printf ("info records = \n");
   for (i=0; i<num_info; i++)
   {
     printf (" '%s'\n", info[i]);
     free(info[i]);
   }

/* read global variables parameters and names */

   error = ex_get_var_param (exoid, "g", &num_glo_vars);
   printf ("\nafter ex_get_var_param, error = %3d\n", error);

   for (i=0; i<num_glo_vars; i++)
   {
      var_names[i] = (char *) calloc ((MAX_STR_LENGTH+1), sizeof(char));
   }

   error = ex_get_var_names (exoid, "g", num_glo_vars, var_names);
   printf ("\nafter ex_get_var_names, error = %3d\n", error);

   printf ("There are %2d global variables; their names are :\n", 
           num_glo_vars);
   for (i=0; i<num_glo_vars; i++)
   {
      printf (" '%s'\n", var_names[i]);
      free(var_names[i]);
   }

/* read nodal variables parameters and names */

   error = ex_get_var_param (exoid, "n", &num_nod_vars);
   printf ("\nafter ex_get_var_param, error = %3d\n", error);

   for (i=0; i<num_nod_vars; i++)
   {
      var_names[i] = (char *) calloc ((MAX_STR_LENGTH+1), sizeof(char));
   }

   error = ex_get_var_names (exoid, "n", num_nod_vars, var_names);
   printf ("\nafter ex_get_var_names, error = %3d\n", error);

   printf ("There are %2d nodal variables; their names are :\n", num_nod_vars);
   for (i=0; i<num_nod_vars; i++)
   {
      printf (" '%s'\n", var_names[i]);
      free(var_names[i]);
   }


/* read element variables parameters and names */

   error = ex_get_var_param (exoid, "e", &num_ele_vars);
   printf ("\nafter ex_get_var_param, error = %3d\n", error);

   for (i=0; i<num_ele_vars; i++)
   {
      var_names[i] = (char *) calloc ((MAX_STR_LENGTH+1), sizeof(char));
   }

   error = ex_get_var_names (exoid, "e", num_ele_vars, var_names);
   printf ("\nafter ex_get_var_names, error = %3d\n", error);

   printf ("There are %2d element variables; their names are :\n", 
            num_ele_vars);
   for (i=0; i<num_ele_vars; i++)
   {
      printf (" '%s'\n", var_names[i]);
      free(var_names[i]);
   }


/* read element variable truth table */

   truth_tab = (int *) calloc ((num_elem_blk*num_ele_vars), sizeof(int));

   error = ex_get_elem_var_tab (exoid, num_elem_blk, num_ele_vars, truth_tab);
   printf ("\nafter ex_get_elem_var_tab, error = %3d\n", error);

   printf ("This is the element variable truth table:\n");

   k = 0;
   for (i=0; i<num_elem_blk*num_ele_vars; i++)
   {
      printf ("%2d\n", truth_tab[k++]);
   }
   free (truth_tab);

/* determine how many time steps are stored */

   error = ex_inquire (exoid, EX_INQ_TIME, &num_time_steps, &fdum, cdum);
   printf ("\nafter ex_inquire, error = %3d\n", error);
   printf ("There are %2d time steps in the database.\n", num_time_steps);

/* read time value at one time step */

   time_step = 3;
   error = ex_get_time (exoid, time_step, &time_value);
   printf ("\nafter ex_get_time, error = %3d\n", error);

   printf ("time value at time step %2d = %5.3f\n", time_step, time_value);

/* read time values at all time steps */

   time_values = (float *) calloc (num_time_steps, sizeof(float));

   error = ex_get_all_times (exoid, time_values);
   printf ("\nafter ex_get_all_times, error = %3d\n", error);

   printf ("time values at all time steps are:\n");
   for (i=0; i<num_time_steps; i++) printf ("%5.3f\n", time_values[i]);

   free (time_values);

/* read all global variables at one time step */

   var_values = (float *) calloc (num_glo_vars, sizeof(float));

   error = ex_get_glob_vars (exoid, time_step, num_glo_vars, var_values);
   printf ("\nafter ex_get_glob_vars, error = %3d\n", error);

   printf ("global variable values at time step %2d\n", time_step);
   for (i=0; i<num_glo_vars; i++) printf ("%5.3f\n", var_values[i]);

   free (var_values); 

/* read a single global variable through time */

   var_index = 1;
   beg_time = 1;
   end_time = -1;

   var_values = (float *) calloc (num_time_steps, sizeof(float));

   error = ex_get_glob_var_time (exoid, var_index, beg_time, end_time, 
                                 var_values);
   printf ("\nafter ex_get_glob_var_time, error = %3d\n", error);

   printf ("global variable %2d values through time:\n", var_index);
   for (i=0; i<num_time_steps; i++) printf ("%5.3f\n", var_values[i]);

   free (var_values); 

/* read a nodal variable at one time step */

   var_values = (float *) calloc (num_nodes, sizeof(float));

   error = ex_get_nodal_var (exoid, time_step, var_index, num_nodes, 
                             var_values);
   printf ("\nafter ex_get_nodal_var, error = %3d\n", error);

   printf ("nodal variable %2d values at time step %2d\n", var_index, 
           time_step);
   for (i=0; i<num_nodes; i++) printf ("%5.3f\n", var_values[i]);

   free (var_values); 

/* read a nodal variable through time */

   var_values = (float *) calloc (num_time_steps, sizeof(float));

   node_num = 1;
   error = ex_get_nodal_var_time (exoid, var_index, node_num, beg_time, 
                                  end_time, var_values);
   printf ("\nafter ex_get_nodal_var_time, error = %3d\n", error);

   printf ("nodal variable %2d values for node %2d through time:\n", var_index,
           node_num);
   for (i=0; i<num_time_steps; i++) printf ("%5.3f\n", var_values[i]);

   free (var_values); 

/* read an element variable at one time step */

   ids = (int *) calloc(num_elem_blk, sizeof(int));

   error = ex_get_elem_blk_ids (exoid, ids);
   printf ("\n after ex_get_elem_blk_ids, error = %3d\n", error);

   for (i=0; i<num_elem_blk; i++)
   {
      var_values = (float *) calloc (num_elem_in_block[i], sizeof(float));

      error = ex_get_elem_var (exoid, time_step, var_index, ids[i], 
                               num_elem_in_block[i], var_values);
      printf ("\nafter ex_get_elem_var, error = %3d\n", error);

      if (!error)
      {
         printf 
    ("element variable %2d values of element block %2d at time step %2d\n",
            var_index, ids[i], time_step);
         for (j=0; j<num_elem_in_block[i]; j++) 
            printf ("%5.3f\n", var_values[j]);
      }

      free (var_values); 
   }
   free (num_elem_in_block);
   free(ids);

/* read an element variable through time */

   var_values = (float *) calloc (num_time_steps, sizeof(float));

   var_index = 2;
   elem_num = 2;
   error = ex_get_elem_var_time (exoid, var_index, elem_num, beg_time, 
                                  end_time, var_values);
   printf ("\nafter ex_get_elem_var_time, error = %3d\n", error);

   printf ("element variable %2d values for element %2d through time:\n", 
           var_index, elem_num);
   for (i=0; i<num_time_steps; i++) printf ("%5.3f\n", var_values[i]);

   free (var_values); 

   error = ex_close (exoid);
   printf ("\nafter ex_close, error = %3d\n", error);
   return 0;
}
