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author | Allen Byrne <50328838+byrnHDF@users.noreply.github.com> | 2021-05-26 16:53:05 (GMT) |
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committer | GitHub <noreply@github.com> | 2021-05-26 16:53:05 (GMT) |
commit | a0968ce775096e83602c7cacb419d3565041fa60 (patch) | |
tree | b861c812113ec11e3b2225cc1b980dccec62a011 /doxygen/examples/H5D_examples.c | |
parent | 5e9e8ff598e6af721459db59aea8b2a9b489d4ec (diff) | |
download | hdf5-a0968ce775096e83602c7cacb419d3565041fa60.zip hdf5-a0968ce775096e83602c7cacb419d3565041fa60.tar.gz hdf5-a0968ce775096e83602c7cacb419d3565041fa60.tar.bz2 |
Hdf5 1 10 doxygen merges (#684)
* HDFFV-10865 - merge from dev, HDFArray perf fix.
* Remove duplicate setting
* Whitespace changes after clang format
* Undo version 11 clang format changes
* Merge CMake changes from develop
* test testing script merge from develop
* Update supported platforms
* PR#3 merge from develop
* Merge gcc 10 diagnostics option from develop
* Merge #318 OSX changes from develop
* Merge small changes from develop
* Minor non-space formatting changes
* #386 copyright corrections for java folder
* Merges from develop
#358 patches from vtk
#361 fix header guard spelling
* Merge updates
#358 patches from vtk
#361 fix header guard spelling
* format fix
* Fix missing underscore and make H5public.h closer to dev
* Merges from develop
#340 clang -Wformat-security warnings
#360 Fixed uninitialized warnings
header guard underscore cleanup
JNI cleanup
* format alignment
* Add missing test ref file
* Merge #380 from develop
* Finish java merges from develop
* Fix java issues with tests and javadoc
* Correct use of attribute access plist
* Remove debug code
* Remove unused variable
* Change file access to read only for java tests
* Split clang format operations.
* More javadoc comments
* Remove pre-split setting
* format source
* Change windows TS to use older VS.
* Mostly all javadoc fixes, one argument rename.
* synch file
* Merge of long double fix and compiler flags
* HDFFV-11229 merge changes from develop
* HDFFV-11229 correct test script
* HDFFV-11229 update autotools test script for two ref files
* HDFFV-11229 merge dev changes for long double display in tools
* Committing clang-format changes
* minor whitespace
* remove unneeded macro
* Committing clang-format changes
* Add "option" command for clang options
* Rework CMake add_custom to use the BYPRODUCTS argument
Update pkgconfig scripts for parallel builds.
Fix install COPYING file reference.
Remove unused round defines.
Change CMake default setting of BUILD_CPP to off.
* Fortran target depends
* Remove incorrect source attribute
* Revert define removal
* printf specifiers and VS2015 min changes
* Committing clang-format changes
* Add time struct
* TRILAB-227 and tools debug merges from develop
* Merge various changes from dev
* Issue #669 remove version from pkgcfg filename
* remove version from h5cc script
* doxygen changes merged from develop
* Committing clang-format changes
Co-authored-by: github-actions <41898282+github-actions[bot]@users.noreply.github.com>
Diffstat (limited to 'doxygen/examples/H5D_examples.c')
-rw-r--r-- | doxygen/examples/H5D_examples.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/doxygen/examples/H5D_examples.c b/doxygen/examples/H5D_examples.c new file mode 100644 index 0000000..aad057d --- /dev/null +++ b/doxygen/examples/H5D_examples.c @@ -0,0 +1,173 @@ +/* -*- c-file-style: "stroustrup" -*- */ + +#include "hdf5.h" + +#include <stdio.h> +#include <stdlib.h> + +int +main(void) +{ + int ret_val = EXIT_SUCCESS; + + //! <!-- [create] --> + { + __label__ fail_lcpl, fail_dset, fail_file; + hid_t file, lcpl, fspace, dset; + + unsigned mode = H5F_ACC_TRUNC; + char file_name[] = "d1.h5"; + // link names can be arbitrary Unicode strings + char dset_name[] = "σύνολο/δεδομένων"; + + if ((file = H5Fcreate(file_name, mode, H5P_DEFAULT, H5P_DEFAULT)) == H5I_INVALID_HID) { + ret_val = EXIT_FAILURE; + goto fail_file; + } + if ((lcpl = H5Pcreate(H5P_LINK_CREATE)) == H5I_INVALID_HID) { + ret_val = EXIT_FAILURE; + goto fail_lcpl; + } + // use UTF-8 encoding for link names + if (H5Pset_char_encoding(lcpl, H5T_CSET_UTF8) < 0) { + ret_val = EXIT_FAILURE; + goto fail_fspace; + } + // create intermediate groups as needed + if (H5Pset_create_intermediate_group(lcpl, 1) < 0) { + ret_val = EXIT_FAILURE; + goto fail_fspace; + } + // create a 1D dataspace + if ((fspace = H5Screate_simple(1, (hsize_t[]){10}, NULL)) == H5I_INVALID_HID) { + ret_val = EXIT_FAILURE; + goto fail_fspace; + } + // create a 32-bit integer dataset + if ((dset = H5Dcreate2(file, dset_name, H5T_STD_I32LE, fspace, lcpl, H5P_DEFAULT, H5P_DEFAULT)) == + H5I_INVALID_HID) { + ret_val = EXIT_FAILURE; + goto fail_dset; + } + + H5Dclose(dset); +fail_dset: + H5Sclose(fspace); +fail_fspace: + H5Pclose(lcpl); +fail_lcpl: + H5Fclose(file); +fail_file:; + } + //! <!-- [create] --> + + //! <!-- [read] --> + { + __label__ fail_dset, fail_file; + hid_t file, dset; + + unsigned mode = H5F_ACC_RDONLY; + char file_name[] = "d1.h5"; + // assume a priori knowledge of dataset name and size + char dset_name[] = "σύνολο/δεδομένων"; + int elts[10]; + + if ((file = H5Fopen(file_name, mode, H5P_DEFAULT)) == H5I_INVALID_HID) { + ret_val = EXIT_FAILURE; + goto fail_file; + } + if ((dset = H5Dopen2(file, dset_name, H5P_DEFAULT)) == H5I_INVALID_HID) { + ret_val = EXIT_FAILURE; + goto fail_dset; + } + // read all dataset elements + if (H5Dread(dset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, elts) < 0) + ret_val = EXIT_FAILURE; + + // do something w/ the dataset elements + + H5Dclose(dset); +fail_dset: + H5Fclose(file); +fail_file:; + } + //! <!-- [read] --> + + //! <!-- [update] --> + { + __label__ fail_update, fail_fspace, fail_dset, fail_file; + hid_t file, dset, fspace; + + unsigned mode = H5F_ACC_RDWR; + char file_name[] = "d1.h5"; + char dset_name[] = "σύνολο/δεδομένων"; + int new_elts[6][2] = {{-1, 1}, {-2, 2}, {-3, 3}, {-4, 4}, {-5, 5}, {-6, 6}}; + + if ((file = H5Fopen(file_name, mode, H5P_DEFAULT)) == H5I_INVALID_HID) { + ret_val = EXIT_FAILURE; + goto fail_file; + } + if ((dset = H5Dopen2(file, dset_name, H5P_DEFAULT)) == H5I_INVALID_HID) { + ret_val = EXIT_FAILURE; + goto fail_dset; + } + // get the dataset's dataspace + if ((fspace = H5Dget_space(dset)) == H5I_INVALID_HID) { + ret_val = EXIT_FAILURE; + goto fail_fspace; + } + // select the first 5 elements in odd positions + if (H5Sselect_hyperslab(fspace, H5S_SELECT_SET, (hsize_t[]){1}, (hsize_t[]){2}, (hsize_t[]){5}, + NULL) < 0) { + ret_val = EXIT_FAILURE; + goto fail_update; + } + + // (implicitly) select and write the first 5 elements of the second column of NEW_ELTS + if (H5Dwrite(dset, H5T_NATIVE_INT, H5S_ALL, fspace, H5P_DEFAULT, new_elts) < 0) + ret_val = EXIT_FAILURE; + +fail_update: + H5Sclose(fspace); +fail_fspace: + H5Dclose(dset); +fail_dset: + H5Fclose(file); +fail_file:; + } + //! <!-- [update] --> + + //! <!-- [delete] --> + { + __label__ fail_delete, fail_file; + hid_t file; + + unsigned mode = H5F_ACC_RDWR; + char file_name[] = "d1.h5"; + char group_name[] = "σύνολο"; + char dset_name[] = "σύνολο/δεδομένων"; + + if ((file = H5Fopen(file_name, mode, H5P_DEFAULT)) == H5I_INVALID_HID) { + ret_val = EXIT_FAILURE; + goto fail_file; + } + // delete (unlink) the dataset + if (H5Ldelete(file, dset_name, H5P_DEFAULT) < 0) { + ret_val = EXIT_FAILURE; + goto fail_delete; + } + // the previous call deletes (unlinks) only the dataset + if (H5Ldelete(file, group_name, H5P_DEFAULT) < 0) { + ret_val = EXIT_FAILURE; + goto fail_delete; + } + +fail_delete: + H5Fclose(file); +fail_file:; + } + + //! <!-- [delete] --> + + return ret_val; +} |