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h5fromh4.c

/* Copyright (c) 2004 Massachusetts Institute of Technology
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 * 
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include <unistd.h>

#include "config.h"
#include "arrayh5.h"
#include "arrayh4.h"
#include "copyright.h"
#include "h5utils.h"

#define CHECK(cond, msg) { if (!(cond)) { fprintf(stderr, "h5fromh4 error: %s\n", msg); exit(EXIT_FAILURE); } }

void usage(FILE *f)
{
     fprintf(f, "Usage: h5fromh4 [options] [<hdf4-files>]\n"
           "Options:\n"
           "         -h : this help message\n"
             "         -V : print version number and copyright\n"
           "         -v : verbose output\n"
           "  -o <file> : output to HDF5 file <file>\n"
             "         -a : append to existing hdf5 file\n"
           "  -d <name> : use dataset <name> in the output file (default: \"data\")\n"
           "              -- you can also specify a dataset via <file>:<name>\n"
        );
}

int main(int argc, char **argv)
{
     char *dname, *h5_fname = NULL;
     char *data_name = NULL;
     extern char *optarg;
     extern int optind;
     int c;
     int ifile;
     int verbose = 0;
     int append = 0;

     while ((c = getopt(argc, argv, "hd:vo:aV")) != -1)
        switch (c) {
            case 'h':
               usage(stdout);
               return EXIT_SUCCESS;
            case 'V':
               printf("h5fromh4 " PACKAGE_VERSION " by Steven G. Johnson\n" 
                    COPYRIGHT);
               return EXIT_SUCCESS;
            case 'v':
               verbose = 1;
               break;
            case 'a':
               append = 1;
               break;
            case 'd':
               free(data_name);
               data_name = my_strdup(optarg);
               break;            
            case 'o':
               free(h5_fname);
               h5_fname = split_fname(optarg, &dname);
               if (dname[0]) {
                  free(data_name);
                  data_name = dname;
               }
               break;            
            default:
               fprintf(stderr, "Invalid argument -%c\n", c);
               usage(stderr);
               return EXIT_FAILURE;
        }
     if (optind == argc) {  /* no parameters left */
        usage(stderr);
        return EXIT_FAILURE;
     }

     for (ifile = optind; ifile < argc; ++ifile) {
        char *h4_fname = argv[ifile];
        arrayh4 a4;
        int i, dims_copy[ARRAYH4_MAX_RANK];
        char *cur_h5_fname = h5_fname;
        arrayh5 a;

        if (!cur_h5_fname)
             cur_h5_fname = replace_suffix(h4_fname, ".hdf", ".h5");

        /* If we specified -o (to concatenate several HDF4 files into
           a single HDF5 file) and if there is more than one filename
           argument, use the filename (minus ".hdf") as the dataset name. */
        if (h5_fname && optind + 1 < argc) {
             dname = my_strdup(h4_fname);
             /* remove ".hdf" from dataset name: */
             if (strlen(dname) >= strlen(".hdf") &&
               !strcmp(dname + strlen(dname)-strlen(".hdf"),
                     ".hdf"))
                dname[strlen(dname) - strlen(".hdf")] = 0;
        }
        else {
             dname = data_name;
             if (!dname)
                dname = my_strdup("data");
        }
        
        if (verbose)
             printf("Reading HDF4 input file \"%s\"...\n", h4_fname);
        CHECK(arrayh4_read(h4_fname, &a4, 0), "error reading HDF4 file");

        for (i = 0; i < a4.rank; ++i)
             dims_copy[i] = a4.dims[i];

        a = arrayh5_create(a4.rank, dims_copy);
        
        if (a4.numtype == DFNT_FLOAT64) {
             for (i = 0; i < a4.N; ++i)
                a.data[i] = a4.p.d[i];
        }
        else if (a4.numtype == DFNT_FLOAT32) {
             for (i = 0; i < a4.N; ++i)
                a.data[i] = a4.p.f[i];
        }
        else {
             CHECK(0, "unknown HDF4 numeric type");
        }

        arrayh4_destroy(a4);
        
        if (verbose) {
             double a_min, a_max;
             arrayh5_getrange(a, &a_min, &a_max);
             printf("data ranges from %g to %g.\n", a_min, a_max);
        }
        
        if (verbose) {
             int i;
             printf("Writing size %d", a.dims[0]);
             for (i = 1; i < a.rank; ++i)
                printf("x%d", a.dims[i]);
             printf(" data to %s:%s\n", cur_h5_fname, dname);
        }

        arrayh5_write(a, cur_h5_fname, dname, 
                  append || (h5_fname && ifile > optind));
        arrayh5_destroy(a);

        if (h5_fname != cur_h5_fname)
             free(cur_h5_fname);
        if (dname != data_name)
             free(dname);
     }

     return EXIT_SUCCESS;
}

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