exgnams.c

一个用来实现偏微分方程中网格的计算库

/*
 * 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.
 * 
 */
/*****************************************************************************
*
* exgnam - ex_get_names
*
* entry conditions - 
*   input parameters:
*       int     exoid          exodus file id
*       int    obj_type,
*
* exit conditions - 
*       char*   names[]           ptr array of names
*
* revision history - 
*
*  $Id: exgnams.c 2928 2008-07-11 17:45:07Z friedmud $
*
*****************************************************************************/

#include "exodusII.h"
#include "exodusII_int.h"

/*
 * reads the entity names from the database
 */

int ex_get_names (int exoid,
                  ex_entity_type obj_type,
                  char **names)
{
  int status;
  int i, j, varid, temp;
  size_t num_entity;
  size_t start[2];
  char *ptr;
  char errmsg[MAX_ERR_LENGTH];
  const char *routine = "ex_get_names";
   
  exerrval = 0; /* clear error code */

  /* inquire previously defined dimensions and variables  */

  switch (obj_type) {
    /*  ======== BLOCKS ========= */
  case EX_EDGE_BLOCK:
    ex_get_dimension(exoid, DIM_NUM_ED_BLK, "edge block", &num_entity, &temp, routine);
    status = nc_inq_varid(exoid, VAR_NAME_ED_BLK, &varid);
    break;
  case EX_FACE_BLOCK:
    ex_get_dimension(exoid, DIM_NUM_FA_BLK, "face block", &num_entity, &temp, routine);
    status = nc_inq_varid(exoid, VAR_NAME_FA_BLK, &varid);
    break;
  case EX_ELEM_BLOCK:
    ex_get_dimension(exoid, DIM_NUM_EL_BLK, "element block", &num_entity, &temp, routine);
    status = nc_inq_varid(exoid, VAR_NAME_EL_BLK, &varid);
    break;

    /*  ======== SETS ========= */
  case EX_NODE_SET:
    ex_get_dimension(exoid, DIM_NUM_NS, "nodeset", &num_entity, &temp, routine);
    status = nc_inq_varid(exoid, VAR_NAME_NS, &varid);
    break;
  case EX_EDGE_SET:
    ex_get_dimension(exoid, DIM_NUM_ES, "edgeset", &num_entity, &temp, routine);
    status = nc_inq_varid(exoid, VAR_NAME_ES, &varid);
    break;
  case EX_FACE_SET:
    ex_get_dimension(exoid, DIM_NUM_FS, "faceset", &num_entity, &temp, routine);
    status = nc_inq_varid(exoid, VAR_NAME_FS, &varid);
    break;
  case EX_SIDE_SET:
    ex_get_dimension(exoid, DIM_NUM_SS, "sideset", &num_entity, &temp, routine);
    status = nc_inq_varid(exoid, VAR_NAME_SS, &varid);
    break;
  case EX_ELEM_SET:
    ex_get_dimension(exoid, DIM_NUM_ELS, "elemset", &num_entity, &temp, routine);
    status = nc_inq_varid(exoid, VAR_NAME_ELS, &varid);
    break;

    /*  ======== MAPS ========= */
  case EX_NODE_MAP:
    ex_get_dimension(exoid, DIM_NUM_NM, "node map", &num_entity, &temp, routine);
    status = nc_inq_varid(exoid, VAR_NAME_NM, &varid);
    break;
  case EX_EDGE_MAP:
    ex_get_dimension(exoid, DIM_NUM_EDM, "edge map", &num_entity, &temp, routine);
    status = nc_inq_varid(exoid, VAR_NAME_EDM, &varid);
    break;
  case EX_FACE_MAP:
    ex_get_dimension(exoid, DIM_NUM_FAM, "face map", &num_entity, &temp, routine);
    status = nc_inq_varid(exoid, VAR_NAME_FAM, &varid);
    break;
  case EX_ELEM_MAP:
    ex_get_dimension(exoid, DIM_NUM_EM, "element map", &num_entity, &temp, routine);
    status = nc_inq_varid(exoid, VAR_NAME_EM, &varid);
    break;

    /* invalid variable type */
  default:
    exerrval = EX_BADPARAM;
    sprintf(errmsg, "Error: Invalid type specified in file id %d",
	    exoid);
    ex_err(routine,errmsg,exerrval);
    return(EX_FATAL);
  }
   
  if (status == NC_NOERR) {
    /* read the names */
    for (i=0; i<num_entity; i++) {
      start[0] = i;
      start[1] = 0;
       
      j = 0;
      ptr = names[i];
       
      if ((status = nc_get_var1_text(exoid, varid, start, ptr)) != NC_NOERR) {
	exerrval = status;
	sprintf(errmsg,
		"Error: failed to get names in file id %d", exoid);
	ex_err("ex_get_names",errmsg,exerrval);
	return (EX_FATAL);
      }
       
       
      while ((*ptr++ != '\0') && (j < MAX_STR_LENGTH)) {
	start[1] = ++j;
	if ((status = nc_get_var1_text(exoid, varid, start, ptr)) != NC_NOERR) {
	  exerrval = status;
	  sprintf(errmsg,
		  "Error: failed to get names in file id %d", exoid);
	  ex_err("ex_get_names",errmsg,exerrval);
	  return (EX_FATAL);
	}
      }
      --ptr;
      if (ptr > names[i]) {
	/*    get rid of trailing blanks */
	while (*(--ptr) == ' ');
      }
      *(++ptr) = '\0';
    }
  } else {
    /* Names variable does not exist on the database; probably since this is an
     * older version of the database.  Return an empty array...
     */
    for (i=0; i<num_entity; i++) {
      names[i][0] = '\0';
    }
  }
  return (EX_NOERR);
}