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195 lines
6.1 KiB
195 lines
6.1 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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* exopen - ex_open
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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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* char* path exodus filename path
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* int mode access mode w/r
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*
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* exit conditions -
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* int exoid exodus file id
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* int* comp_ws computer word size
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* int* io_ws storage word size
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* float* version EXODUSII interface version number
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*
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* revision history -
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*
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* $Id: exopen.c,v 1.1 2005/07/17 15:44:00 andy Exp $
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*
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*****************************************************************************/
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#include <stdio.h>
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#include "exodusII.h"
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#include "exodusII_int.h"
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/*
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* opens an existing EXODUS II file (or EXODUS II history file) and returns
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* an id that can subsequently be used to refer to the file. Multiple files
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* may be open simultaneously
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*/
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int ex_open (const char *path,
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int mode,
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int *comp_ws,
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int *io_ws,
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float *version)
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{
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int exoid;
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nclong file_wordsize;
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char errmsg[MAX_ERR_LENGTH];
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exerrval = 0; /* clear error code */
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/* set error handling mode to no messages, non-fatal errors */
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ex_opts(exoptval); /* call required to set ncopts first time through */
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if (mode == EX_READ) /* READ ONLY */
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{
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#ifdef TFLOP
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if ((exoid = ncopen (path, NC_NOWRITE)) < 0)
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#else
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if ((exoid = ncopen (path, NC_NOWRITE|NC_SHARE)) < 0)
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#endif
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{
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/* NOTE: netCDF returns an id of -1 on an error - but no error code! */
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if (ncerr == 0)
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exerrval = EX_FATAL;
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else
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exerrval = ncerr;
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sprintf(errmsg,"Error: failed to open %s read only",path);
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ex_err("ex_open",errmsg,exerrval);
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return(EX_FATAL);
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}
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}
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else if (mode == EX_WRITE) /* READ/WRITE */
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{
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#ifdef TFLOP
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if ((exoid = ncopen (path, NC_WRITE)) < 0)
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#else
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if ((exoid = ncopen (path, NC_WRITE|NC_SHARE)) < 0)
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#endif
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{
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/* NOTE: netCDF returns an id of -1 on an error - but no error code! */
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if (ncerr == 0)
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exerrval = EX_FATAL;
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else
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exerrval = ncerr;
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sprintf(errmsg,"Error: failed to open %s write only",path);
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ex_err("ex_open",errmsg,exerrval);
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return(EX_FATAL);
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}
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/* turn off automatic filling of netCDF variables */
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if (ncsetfill (exoid, NC_NOFILL) == -1)
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{
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exerrval = ncerr;
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sprintf(errmsg,
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"Error: failed to set nofill mode in file id %d",
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exoid);
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ex_err("ex_open", errmsg, exerrval);
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return (EX_FATAL);
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}
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}
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else
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{
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exerrval = EX_BADFILEMODE;
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sprintf(errmsg,"Error: invalid file open mode: %d",mode);
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ex_err("ex_open",errmsg,exerrval);
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return (EX_FATAL);
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}
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/* determine version of EXODUS II file, and the word size of
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* floating point values stored in the file
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*/
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if (ncattget (exoid, NC_GLOBAL, ATT_VERSION, version) == -1)
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{
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exerrval = ncerr;
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sprintf(errmsg,"Error: failed to get database version for file id: %d",
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exoid);
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ex_err("ex_open",errmsg,exerrval);
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return(EX_FATAL);
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}
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/* check ExodusII file version - old version 1.x files are not supported */
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if (*version < 2.0)
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{
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exerrval = EX_FATAL;
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sprintf(errmsg,"Error: Unsupported file version %.2f in file id: %d",
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*version, exoid);
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ex_err("ex_open",errmsg,exerrval);
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return(EX_FATAL);
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}
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if (ncattget (exoid, NC_GLOBAL, ATT_FLT_WORDSIZE, &file_wordsize) == -1)
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{ /* try old (prior to db version 2.02) attribute name */
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if (ncattget (exoid,NC_GLOBAL,ATT_FLT_WORDSIZE_BLANK,&file_wordsize) == -1)
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{
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exerrval = EX_FATAL;
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sprintf(errmsg,"Error: failed to get file wordsize from file id: %d",
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exoid);
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ex_err("ex_open",errmsg,exerrval);
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return(exerrval);
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}
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}
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/* initialize floating point size conversion.
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*/
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if (ex_conv_ini( exoid, comp_ws, io_ws, file_wordsize ) != EX_NOERR ) {
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exerrval = EX_FATAL;
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sprintf(errmsg,
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"Error: failed to init conversion routines in file id %d",
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exoid);
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ex_err("ex_open", errmsg, exerrval);
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return (EX_FATAL);
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}
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return (exoid);
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}
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