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							158 lines
						
					
					
						
							5.3 KiB
						
					
					
				
			
		
		
	
	
							158 lines
						
					
					
						
							5.3 KiB
						
					
					
				/*
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 * Copyright (c) 1994 Sandia Corporation. Under the terms of Contract
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 * DE-AC04-94AL85000 with Sandia Corporation, the U.S. Governement
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 * retains certain rights in this software.
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 * 
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions are
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 * met:
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 * 
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 *     * Redistributions of source code must retain the above copyright
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 *       notice, this list of conditions and the following disclaimer.
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 * 
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 *     * Redistributions in binary form must reproduce the above
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 *       copyright notice, this list of conditions and the following
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 *       disclaimer in the documentation and/or other materials provided
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 *       with the distribution.  
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 * 
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 *     * Neither the name of Sandia Corporation nor the names of its
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 *       contributors may be used to endorse or promote products derived
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 *       from this software without specific prior written permission.
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 * 
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 * 
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 */
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/*****************************************************************************
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*
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* exgvan - ex_get_var_names
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*
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* author - Sandia National Laboratories
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*          Larry A. Schoof - Original
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*          James A. Schutt - 8 byte float and standard C definitions
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*          Vic Yarberry    - Added headers and error logging
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*
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*          
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* environment - UNIX
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*
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* entry conditions - 
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*   input parameters:
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*       int     exoid                   exodus file id
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*       char*   var_type                variable type: G,N, or E
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*       int     num_vars                # of variables to read
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*
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* exit conditions - 
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*       char*   var_names               ptr array of variable names
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*
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* revision history - 
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*
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*  $Id: exgvan.c,v 1.2 2005/07/19 22:11:53 andy Exp $
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*
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*****************************************************************************/
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#include "exodusII.h"
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#include "exodusII_int.h"
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/*
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 * reads the names of the results variables from the database
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 */
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int ex_get_var_names (int   exoid,
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                      const char *var_type,
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                      int   num_vars,
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                      char *var_names[])
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{
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  int i, varid, status;
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  char errmsg[MAX_ERR_LENGTH];
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  exerrval = 0; /* clear error code */
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  /* inquire previously defined variables  */
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  if (*var_type == 'g' || *var_type == 'G') {
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    if ((varid = ncvarid (exoid, VAR_NAME_GLO_VAR)) == -1) {
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      exerrval = ncerr;
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      sprintf(errmsg,
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              "Warning: no global variables names stored in file id %d", exoid);
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      ex_err("ex_get_var_names",errmsg,exerrval);
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      return (EX_WARN);
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    }
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  }
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  else if (*var_type == 'n' || *var_type == 'N') {
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    if ((varid = ncvarid (exoid, VAR_NAME_NOD_VAR)) == -1) {
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      exerrval = ncerr;
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      sprintf(errmsg,
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              "Warning: no nodal variable names stored in file id %d",
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              exoid);
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      ex_err("ex_get_var_names",errmsg,exerrval);
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      return (EX_WARN);
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    }
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  }
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  else if (*var_type == 'e' || *var_type == 'E') {
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    if ((varid = ncvarid (exoid, VAR_NAME_ELE_VAR)) == -1) {
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      exerrval = ncerr;
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      sprintf(errmsg,
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              "Warning: no element variable names stored in file id %d",
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              exoid);
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      ex_err("ex_get_var_names",errmsg,exerrval);
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      return (EX_WARN);
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    }
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  }
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  else       /* invalid variable type */
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    {
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      exerrval = EX_BADPARAM;
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      sprintf(errmsg,
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              "Error: Invalid variable type %c specified in file id %d",
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              *var_type, exoid);
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      ex_err("ex_put_var_names",errmsg,exerrval);
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      return (EX_WARN);
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    }
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  /* read the variable names */
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  /*
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   * See if reading into contiguous memory in which case we can load 
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   * all values in one call.  If not, we must load each name individually.
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   */
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  if ((size_t)(&var_names[num_vars-1][0] - &var_names[0][0]) ==
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      sizeof(char)*(MAX_STR_LENGTH+1)*(num_vars-1)) {
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    status = nc_get_var_text(exoid, varid, &var_names[0][0]);
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    if (status == -1) {
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      exerrval = ncerr;
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      sprintf(errmsg,
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              "Error: failed to get results variable names from file id %d", exoid);
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      ex_err("ex_get_var_names",errmsg,exerrval);
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      return (EX_FATAL);
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    }
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  } else {
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    for (i=0; i<num_vars; i++) {
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      size_t start[2];
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      size_t count[2];
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      start[0] = i;  count[0] = 1;
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      start[1] = 0;  count[1] = MAX_STR_LENGTH+1;
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      status = nc_get_vara_text(exoid, varid, start, count, var_names[i]);
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      if (status == -1) {
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        exerrval = ncerr;
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        sprintf(errmsg,
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                "Error: failed to get results variable names from file id %d", exoid);
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        ex_err("ex_get_var_names",errmsg,exerrval);
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        return (EX_FATAL);
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      }
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    }
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  }
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  return (EX_NOERR);
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}
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