diff options
Diffstat (limited to 'src/util/hdf5_double_to_single.c')
| -rw-r--r-- | src/util/hdf5_double_to_single.c | 340 |
1 files changed, 340 insertions, 0 deletions
diff --git a/src/util/hdf5_double_to_single.c b/src/util/hdf5_double_to_single.c new file mode 100644 index 0000000..870ccc7 --- /dev/null +++ b/src/util/hdf5_double_to_single.c @@ -0,0 +1,340 @@ + /*@@ + @file hdf5_double_to_single.c + @date Thu 10 Jan 2002 + @author Thomas Radke + @desc + This utility program copies a Cactus HDF5 datafile reverting + double-precision datasets into single-precision. + @enddesc + @version $Id: hdf5_double_to_single.c,v 1.3 2009/09/29 14:38:14 schnetter Exp $ + @@*/ + +#include "cctk.h" + +#define H5_USE_16_API 1 +#include <hdf5.h> + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +/* the rcs ID and its dummy function to use it */ +static const char *rcsid = "$Header: /cactusdevcvs/CactusExternal/HDF5/src/util/hdf5_double_to_single.c,v 1.3 2009/09/29 14:38:14 schnetter Exp $"; +CCTK_FILEVERSION(CactusExternal_HDF5_util_hdf5_double_to_single_c) + + +/*****************************************************************************/ +/* macro definitions */ +/*****************************************************************************/ +/* macro to do an HDF5 call, check its return code, and print a warning + in case of an error */ +#define CHECK_ERROR(hdf5_call) \ + do \ + { \ + int _error_code = hdf5_call; \ + \ + \ + if (_error_code < 0) \ + { \ + fprintf (stderr, "WARNING: line %d: HDF5 call '%s' returned " \ + "error code %d\n", \ + __LINE__, #hdf5_call, _error_code); \ + nerrors++; \ + } \ + } while (0) + + +/*****************************************************************************/ +/* global variables */ +/*****************************************************************************/ +/* NOTE: although it isn't good programming practice + we make these variables global for convenience + since they are accessed from recursively or + indirectly called routines which only get passed + a single user-supplied argument */ +static char *pathname = NULL; /* pathname of the current object */ +static unsigned int nerrors = 0; /* global error counter */ + +/*****************************************************************************/ +/* local function prototypes */ +/*****************************************************************************/ +static herr_t CopyObject (hid_t copy_from, const char *objectname, void *arg); +static herr_t CopyAttribute (hid_t src, const char *attr_name, void *arg); + + + /*@@ + @routine main + @date Thu 10 Jan 2002 + @author Thomas Radke + @desc + Main routine of the HDF5 double-to-single converter + @enddesc + + @calls CopyObject + + @var argc + @vdesc number of command line arguments + @vtype int + @vio in + @endvar + @var argv + @vdesc command line arguments + @vtype char *[] + @vio in + @endvar + + @returntype int + @returndesc + 0 for success, negative return values indicate an error + @endreturndesc +@@*/ +int main (int argc, char *argv[]) +{ + hid_t infile, outfile; + + + /* give some help if called with incorrect number of parameters */ + if (argc != 3) + { + fprintf (stderr, "Usage: %s <infile> <outfile>\n", argv[0]); + fprintf (stderr, " eg, %s alp.h5 alp_single.h5\n\n", argv[0]); + return (0); + } + + H5E_BEGIN_TRY + { + /* open the input file */ + infile = H5Fopen (argv[1], H5F_ACC_RDONLY, H5P_DEFAULT); + if (infile < 0) + { + fprintf (stderr, "ERROR: Cannot open HDF5 input file '%s' !\n\n",argv[1]); + return (-1); + } + + /* create output file */ + outfile = H5Fcreate (argv[2], H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT); + if (outfile < 0) + { + fprintf (stderr, "ERROR: Cannot create HDF5 output file '%s' !\n\n", + argv[2]); + return (-1); + } + } H5E_END_TRY + + printf ("\n --------------------------------------------------\n" + " Cactus 4 HDF5 double-to-single precision Converter\n" + " --------------------------------------------------\n"); + + /* do the copying by iterating over all objects */ + pathname = ""; + CHECK_ERROR (H5Giterate (infile, "/", NULL, CopyObject, &outfile)); + + /* finally, close all open files */ + CHECK_ERROR (H5Fclose (infile)); + CHECK_ERROR (H5Fclose (outfile)); + + /* report status */ + if (nerrors == 0) + { + printf ("\n\n *** All Cactus data successfully converted. ***\n\n"); + } + else + { + fprintf (stderr, "\n\n *** WARNING: %u errors occured during " + "conversion. ***\n\n", nerrors); + } + + return (0); +} + + +/*****************************************************************************/ +/* local routines */ +/*****************************************************************************/ + /*@@ + @routine CopyObject + @date Thu 10 Jan 2002 + @author Thomas Radke + @desc + Iterator recursively called by H5Giterate() for every object + in the input file + @enddesc + + @calls CopyAttribute + + @var from + @vdesc identifier for the group the current object belongs to + @vtype hid_t + @vio in + @endvar + @var objectname + @vdesc name of the current object + @vtype const char * + @vio in + @endvar + @var _to + @vdesc user-supplied argument indicating the output object identifier + @vtype hid_t + @vio in + @endvar + + @returntype int + @returndesc + 0 - continue the iteration for following group objects + 1 - short-curcuit, no further iteration of this group + @endreturndesc +@@*/ +static herr_t CopyObject (hid_t from, + const char *objectname, + void *_to) +{ + hid_t to, datatype, dataspace; + H5G_stat_t objectinfo; + char *current_pathname; + size_t objectsize; + char *data; + + + /* build the full pathname for the current to object to process */ + current_pathname = pathname; + pathname = (char *) malloc (strlen (current_pathname) + + strlen (objectname) + 2); + sprintf (pathname, "%s/%s", current_pathname, objectname); + + /* get the output object identifier */ + to = *(hid_t *) _to; + + /* check the type of the current object */ + CHECK_ERROR (H5Gget_objinfo (from, objectname, 0, &objectinfo)); + if (objectinfo.type == H5G_GROUP) + { + printf (" copying group '%s'\n", pathname); + + CHECK_ERROR (from = H5Gopen (from, objectname)); + CHECK_ERROR (to = H5Gcreate (to, objectname, 0)); + /* iterate over all objects in the (first) input file */ + CHECK_ERROR (H5Giterate (from, ".", NULL, CopyObject, &to)); + CHECK_ERROR (H5Aiterate (from, NULL, CopyAttribute, &to)); + CHECK_ERROR (H5Gclose (to)); + CHECK_ERROR (H5Gclose (from)); + } + else if (objectinfo.type == H5G_DATASET) + { + CHECK_ERROR (from = H5Dopen (from, objectname)); + CHECK_ERROR (dataspace = H5Dget_space (from)); + CHECK_ERROR (datatype = H5Dget_type (from)); + if (H5Tget_class (datatype) == H5T_FLOAT) + { + CHECK_ERROR (H5Tclose (datatype)); + CHECK_ERROR (datatype = H5Tcopy (H5T_NATIVE_FLOAT)); + printf (" converting dataset '%s'\n", pathname); + } + else + { + printf (" copying dataset '%s'\n", pathname); + } + CHECK_ERROR (to = H5Dcreate (to, objectname, datatype, dataspace, + H5P_DEFAULT)); + objectsize = H5Tget_size (datatype); + if (H5Sis_simple (dataspace)) + { + objectsize *= H5Sget_simple_extent_npoints (dataspace); + } + if (objectsize > 0) + { + data = (char *) malloc (objectsize); + CHECK_ERROR (H5Dread (from, datatype, H5S_ALL, H5S_ALL, H5P_DEFAULT, + data)); + CHECK_ERROR (H5Dwrite (to, datatype, H5S_ALL, H5S_ALL, H5P_DEFAULT,data)); + free (data); + } + CHECK_ERROR (H5Aiterate (from, NULL, CopyAttribute, &to)); + CHECK_ERROR (H5Dclose (to)); + CHECK_ERROR (H5Dclose (from)); + CHECK_ERROR (H5Sclose (dataspace)); + CHECK_ERROR (H5Tclose (datatype)); + } + else + { + fprintf (stderr, "WARNING: Found object '%s' which is neither a group " + "nor a dataset ! Object will not be copied.\n", pathname); + nerrors++; + } + + /* reset the pathname */ + free (pathname); + pathname = current_pathname; + + return (0); +} + + + /*@@ + @routine CopyAttribute + @date Thu 10 Jan 2002 + @author Thomas Radke + @desc + Iterator recursively called by H5Aiterate() for every attribute + of an object (dataset or group) + @enddesc + + @var from + @vdesc identifier for the group or dataset to read the attribute from + @vtype hid_t + @vio in + @endvar + @var attrname + @vdesc name of the current attribute + @vtype const char * + @vio in + @endvar + @var _to + @vdesc user-supplied argument indicating the group or dataset + to copy the attribute to + @vtype hid_t + @vio in + @endvar + + @returntype int + @returndesc + 0 - continue the iteration for following attributes + @endreturndesc +@@*/ +static herr_t CopyAttribute (hid_t from, + const char *attrname, + void *_to) +{ + hid_t attr, datatype, dataspace, to; + size_t attrsize; + void *value; + + + /* get the target group/dataset identifier */ + to = *(hid_t *) _to; + + /* open the attribute given by its name, get type, dataspace, and value + and just copy it */ + CHECK_ERROR (attr = H5Aopen_name (from, attrname)); + CHECK_ERROR (datatype = H5Aget_type (attr)); + CHECK_ERROR (dataspace = H5Aget_space (attr)); + attrsize = H5Tget_size (datatype); + if (H5Sis_simple (dataspace) > 0) + { + attrsize *= H5Sget_simple_extent_npoints (dataspace); + } + if (attrsize > 0) + { + value = malloc (attrsize); + CHECK_ERROR (H5Aread (attr, datatype, value)); + CHECK_ERROR (H5Aclose (attr)); + CHECK_ERROR (attr = H5Acreate (to, attrname, datatype, dataspace, + H5P_DEFAULT)); + CHECK_ERROR (H5Awrite (attr, datatype, value)); + free (value); + } + CHECK_ERROR (H5Aclose (attr)); + CHECK_ERROR (H5Sclose (dataspace)); + CHECK_ERROR (H5Tclose (datatype)); + + return (0); +} |