mirror of
https://github.com/HDFGroup/hdf5.git
synced 2024-12-27 08:01:04 +08:00
3da0802c40
* Implement support for loading of Virtual File Drivers as plugins Fix plugin caching for VOL connector and VFD plugins Fix plugin iteration to skip paths that can't be opened * Enable dynamic loading of VFDs with HDF5_DRIVER environment variable * Temporarily disable error reporting during H5F_open double file open * Default to using HDstat in h5_get_file_size for unknown VFDs * Use macros for some environment variables that HDF5 interprets * Update "null" and "ctl testing" VFDs
100 lines
3.3 KiB
C
100 lines
3.3 KiB
C
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Copyright by The HDF Group. *
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* Copyright by the Board of Trustees of the University of Illinois. *
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* All rights reserved. *
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* *
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* This file is part of HDF5. The full HDF5 copyright notice, including *
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* terms governing use, modification, and redistribution, is contained in *
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* the COPYING file, which can be found at the root of the source code *
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* distribution tree, or in https://www.hdfgroup.org/licenses. *
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* If you do not have access to either file, you may request a copy from *
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* help@hdfgroup.org. *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/*
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* This shows how to use the hdf5 virtual file drivers.
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* The example codes here do not check return values for the
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* sake of simplicity. As in all proper programs, return codes
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* should be checked.
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*/
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#include "hdf5.h"
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#include "stdlib.h"
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/* global variables */
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int cleanup_g = -1; /* whether to clean. Init to not set. */
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/* prototypes */
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void cleanup(const char *);
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void split_file(void);
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/*
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* Cleanup a file unless $HDF5_NOCLEANUP is set.
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*/
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void
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cleanup(const char *filename)
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{
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if (cleanup_g == -1)
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cleanup_g = getenv(HDF5_NOCLEANUP) ? 0 : 1;
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if (cleanup_g)
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remove(filename);
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}
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/*
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* This shows how to use the split file driver.
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*/
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void
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split_file(void)
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{
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hid_t fapl, fid;
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/* Example 1: Both metadata and rawdata files are in the same */
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/* directory. Use Station1-m.h5 and Station1-r.h5 as */
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/* the metadata and rawdata files. */
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fapl = H5Pcreate(H5P_FILE_ACCESS);
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H5Pset_fapl_split(fapl, "-m.h5", H5P_DEFAULT, "-r.h5", H5P_DEFAULT);
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fid = H5Fcreate("Station1", H5F_ACC_TRUNC, H5P_DEFAULT, fapl);
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/* using the file ... */
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H5Fclose(fid);
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H5Pclose(fapl);
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/* Remove files created */
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cleanup("Station1-m.h5");
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cleanup("Station1-r.h5");
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/* Example 2: metadata and rawdata files are in different */
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/* directories. Use PointA-m.h5 and /tmp/PointA-r.h5 as */
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/* the metadata and rawdata files. */
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fapl = H5Pcreate(H5P_FILE_ACCESS);
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H5Pset_fapl_split(fapl, "-m.h5", H5P_DEFAULT, "/tmp/%s-r.h5", H5P_DEFAULT);
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fid = H5Fcreate("PointA", H5F_ACC_TRUNC, H5P_DEFAULT, fapl);
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/* using the file ... */
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H5Fclose(fid);
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H5Pclose(fapl);
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/* Remove files created */
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cleanup("PointA-m.h5");
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cleanup("/tmp/PointA-r.h5");
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/* Example 3: Using default extension names for the metadata */
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/* and rawdata files. Use Measure.meta and Measure.raw as */
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/* the metadata and rawdata files. */
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fapl = H5Pcreate(H5P_FILE_ACCESS);
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H5Pset_fapl_split(fapl, NULL, H5P_DEFAULT, NULL, H5P_DEFAULT);
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fid = H5Fcreate("Measure", H5F_ACC_TRUNC, H5P_DEFAULT, fapl);
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/* using the file ... */
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H5Fclose(fid);
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H5Pclose(fapl);
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/* Remove files created */
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cleanup("Measure.meta");
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cleanup("Measure.raw");
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}
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/* Main Body */
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int
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main(void)
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{
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split_file();
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return (0);
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}
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