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re: https://github.com/Unidata/netcdf-c/issues/1584 Support has been added for multiple filters per variable. This affects a number of components in netcdf. The new APIs are documented in NUG/filters.md. The primary changes are: * A set of new functions are provided (see __include/netcdf_filter.h__). - Obtain a list of the filters associated with a variable - Obtain the parameters for a specific filter. * The existing __nc_inq_var_filter__ function now returns info about the first defined filter. * The utilities (ncgen, ncdump, and nccopy) now support an extended format for specifying a sequence of filters. The general form is __<filter>|<filter>..._. * The ncdump **_Filter** attribute now dumps a list of all the filters associated with a variable using the above new format. * Filter specifications can now use a filter name instead of number for filters known to the netcdf library, which in turn is taken from the HDF5 filter registration page. * New errors are defined: NC_EFILTER and NC_ENOFILTER. The latter is returned if an attempt is made to access an unknown filter. * Internally, the dispatch table has been extended to add a function to handle all of the filter functions. * New, filter-related, tests were added to nc_test4. * A new plugin was added to the plugins directory to help with testing. Notes: 1. The shuffle and fletcher32 filters are not part of the multifilter system. Misc. changes: 1. A debug module was added to libhdf5 to help catch error locations.
288 lines
9.6 KiB
C
288 lines
9.6 KiB
C
/** \file
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Error messages and library version.
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These functions return the library version, and error messages.
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Copyright 2018 University Corporation for Atmospheric
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Research/Unidata. See COPYRIGHT file for more info.
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*/
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#include "ncdispatch.h"
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#ifdef USE_PNETCDF
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#include <pnetcdf.h> /* for ncmpi_strerror() */
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#endif
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/** @internal The version string for the library, used by
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* nc_inq_libvers(). */
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static const char nc_libvers[] = PACKAGE_VERSION " of "__DATE__" "__TIME__" $";
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/**
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Return the library version.
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\returns short string that contains the version information for the
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library.
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*/
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const char *
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nc_inq_libvers(void)
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{
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return nc_libvers;
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}
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/*! NetCDF Error Handling
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\addtogroup error NetCDF Error Handling
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NetCDF functions return a non-zero status codes on error.
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Each netCDF function returns an integer status value. If the returned
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status value indicates an error, you may handle it in any way desired,
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from printing an associated error message and exiting to ignoring the
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error indication and proceeding (not recommended!). For simplicity,
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the examples in this guide check the error status and call a separate
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function, handle_err(), to handle any errors. One possible definition
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of handle_err() can be found within the documentation of
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nc_strerror().
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The nc_strerror() function is available to convert a returned integer
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error status into an error message string.
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Occasionally, low-level I/O errors may occur in a layer below the
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netCDF library. For example, if a write operation causes you to exceed
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disk quotas or to attempt to write to a device that is no longer
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available, you may get an error from a layer below the netCDF library,
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but the resulting write error will still be reflected in the returned
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status value.
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*/
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/** \{ */
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/*! Given an error number, return an error message.
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This function returns a static reference to an error message string
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corresponding to an integer netCDF error status or to a system error
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number, presumably returned by a previous call to some other netCDF
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function. The error codes are defined in netcdf.h.
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\param ncerr1 error number
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\returns short string containing error message.
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Here is an example of a simple error handling function that uses
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nc_strerror() to print the error message corresponding to the netCDF
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error status returned from any netCDF function call and then exit:
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\code
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#include <netcdf.h>
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...
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void handle_error(int status) {
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if (status != NC_NOERR) {
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fprintf(stderr, "%s\n", nc_strerror(status));
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exit(-1);
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}
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}
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\endcode
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*/
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const char *nc_strerror(int ncerr1)
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{
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/* System error? */
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if(NC_ISSYSERR(ncerr1))
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{
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const char *cp = (const char *) strerror(ncerr1);
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if(cp == NULL)
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return "Unknown Error";
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return cp;
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}
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/* If we're here, this is a netcdf error code. */
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switch(ncerr1)
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{
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case NC_NOERR:
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return "No error";
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case NC_EBADID:
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return "NetCDF: Not a valid ID";
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case NC_ENFILE:
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return "NetCDF: Too many files open";
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case NC_EEXIST:
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return "NetCDF: File exists && NC_NOCLOBBER";
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case NC_EINVAL:
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return "NetCDF: Invalid argument";
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case NC_EPERM:
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return "NetCDF: Write to read only";
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case NC_ENOTINDEFINE:
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return "NetCDF: Operation not allowed in data mode";
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case NC_EINDEFINE:
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return "NetCDF: Operation not allowed in define mode";
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case NC_EINVALCOORDS:
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return "NetCDF: Index exceeds dimension bound";
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case NC_EMAXDIMS:
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return "NetCDF: NC_MAX_DIMS exceeded"; /* not enforced after 4.5.0 */
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case NC_ENAMEINUSE:
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return "NetCDF: String match to name in use";
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case NC_ENOTATT:
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return "NetCDF: Attribute not found";
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case NC_EMAXATTS:
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return "NetCDF: NC_MAX_ATTRS exceeded"; /* not enforced after 4.5.0 */
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case NC_EBADTYPE:
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return "NetCDF: Not a valid data type or _FillValue type mismatch";
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case NC_EBADDIM:
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return "NetCDF: Invalid dimension ID or name";
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case NC_EUNLIMPOS:
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return "NetCDF: NC_UNLIMITED in the wrong index";
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case NC_EMAXVARS: return "NetCDF: NC_MAX_VARS exceeded"; /* not enforced after 4.5.0 */
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case NC_ENOTVAR:
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return "NetCDF: Variable not found";
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case NC_EGLOBAL:
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return "NetCDF: Action prohibited on NC_GLOBAL varid";
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case NC_ENOTNC:
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return "NetCDF: Unknown file format";
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case NC_ESTS:
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return "NetCDF: In Fortran, string too short";
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case NC_EMAXNAME:
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return "NetCDF: NC_MAX_NAME exceeded";
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case NC_EUNLIMIT:
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return "NetCDF: NC_UNLIMITED size already in use";
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case NC_ENORECVARS:
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return "NetCDF: nc_rec op when there are no record vars";
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case NC_ECHAR:
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return "NetCDF: Attempt to convert between text & numbers";
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case NC_EEDGE:
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return "NetCDF: Start+count exceeds dimension bound";
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case NC_ESTRIDE:
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return "NetCDF: Illegal stride";
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case NC_EBADNAME:
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return "NetCDF: Name contains illegal characters";
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case NC_ERANGE:
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return "NetCDF: Numeric conversion not representable";
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case NC_ENOMEM:
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return "NetCDF: Memory allocation (malloc) failure";
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case NC_EVARSIZE:
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return "NetCDF: One or more variable sizes violate format constraints";
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case NC_EDIMSIZE:
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return "NetCDF: Invalid dimension size";
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case NC_ETRUNC:
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return "NetCDF: File likely truncated or possibly corrupted";
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case NC_EAXISTYPE:
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return "NetCDF: Illegal axis type";
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case NC_EDAP:
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return "NetCDF: DAP failure";
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case NC_ECURL:
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return "NetCDF: libcurl failure";
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case NC_EIO:
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return "NetCDF: I/O failure";
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case NC_ENODATA:
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return "NetCDF: Variable has no data in DAP request";
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case NC_EDAPSVC:
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return "NetCDF: DAP server error";
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case NC_EDAS:
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return "NetCDF: Malformed or inaccessible DAP DAS";
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case NC_EDDS:
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return "NetCDF: Malformed or inaccessible DAP2 DDS or DAP4 DMR response";
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case NC_EDATADDS:
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return "NetCDF: Malformed or inaccessible DAP2 DATADDS or DAP4 DAP response";
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case NC_EDAPURL:
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return "NetCDF: Malformed URL";
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case NC_EDAPCONSTRAINT:
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return "NetCDF: Malformed or unexpected Constraint";
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case NC_ETRANSLATION:
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return "NetCDF: Untranslatable construct";
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case NC_EACCESS:
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return "NetCDF: Access failure";
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case NC_EAUTH:
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return "NetCDF: Authorization failure";
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case NC_ENOTFOUND:
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return "NetCDF: file not found";
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case NC_ECANTREMOVE:
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return "NetCDF: cannot delete file";
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case NC_EINTERNAL:
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return "NetCDF: internal library error; Please contact Unidata support";
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case NC_EPNETCDF:
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return "NetCDF: PnetCDF error";
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case NC_EHDFERR:
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return "NetCDF: HDF error";
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case NC_ECANTREAD:
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return "NetCDF: Can't read file";
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case NC_ECANTWRITE:
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return "NetCDF: Can't write file";
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case NC_ECANTCREATE:
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return "NetCDF: Can't create file";
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case NC_EFILEMETA:
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return "NetCDF: Can't add HDF5 file metadata";
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case NC_EDIMMETA:
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return "NetCDF: Can't define dimensional metadata";
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case NC_EATTMETA:
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return "NetCDF: Can't open HDF5 attribute";
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case NC_EVARMETA:
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return "NetCDF: Problem with variable metadata.";
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case NC_ENOCOMPOUND:
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return "NetCDF: Can't create HDF5 compound type";
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case NC_EATTEXISTS:
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return "NetCDF: Attempt to create attribute that already exists";
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case NC_ENOTNC4:
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return "NetCDF: Attempting netcdf-4 operation on netcdf-3 file";
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case NC_ESTRICTNC3:
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return "NetCDF: Attempting netcdf-4 operation on strict nc3 netcdf-4 file";
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case NC_ENOTNC3:
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return "NetCDF: Attempting netcdf-3 operation on netcdf-4 file";
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case NC_ENOPAR:
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return "NetCDF: Parallel operation on file opened for non-parallel access";
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case NC_EPARINIT:
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return "NetCDF: Error initializing for parallel access";
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case NC_EBADGRPID:
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return "NetCDF: Bad group ID";
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case NC_EBADTYPID:
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return "NetCDF: Bad type ID";
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case NC_ETYPDEFINED:
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return "NetCDF: Type has already been defined and may not be edited";
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case NC_EBADFIELD:
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return "NetCDF: Bad field ID";
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case NC_EBADCLASS:
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return "NetCDF: Bad class";
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case NC_EMAPTYPE:
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return "NetCDF: Mapped access for atomic types only";
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case NC_ELATEFILL:
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return "NetCDF: Attempt to define fill value when data already exists.";
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case NC_ELATEDEF:
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return "NetCDF: Attempt to define var properties, like deflate, after enddef.";
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case NC_EDIMSCALE:
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return "NetCDF: Problem with HDF5 dimscales.";
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case NC_ENOGRP:
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return "NetCDF: No group found.";
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case NC_ESTORAGE:
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return "NetCDF: Cannot specify both contiguous and chunking.";
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case NC_EBADCHUNK:
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return "NetCDF: Bad chunk sizes.";
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case NC_ENOTBUILT:
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return "NetCDF: Attempt to use feature that was not turned on "
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"when netCDF was built.";
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case NC_EDISKLESS:
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return "NetCDF: Error in using diskless access";
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case NC_EFILTER:
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return "NetCDF: Filter error: bad id or parameters";
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case NC_ENOFILTER:
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return "NetCDF: Filter error: filter not defined for variable";
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case NC_ECANTEXTEND:
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return "NetCDF: Attempt to extend dataset during NC_INDEPENDENT I/O operation. Use nc_var_par_access to set mode NC_COLLECTIVE before extending variable.";
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case NC_EMPI: return "NetCDF: MPI operation failed.";
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case NC_ERCFILE:
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return "NetCDF: RC File Failure.";
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case NC_ENULLPAD:
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return "NetCDF: File fails strict Null-Byte Header check.";
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case NC_EINMEMORY:
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return "NetCDF: In-memory File operation failed.";
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default:
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#ifdef USE_PNETCDF
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/* The behavior of ncmpi_strerror here is to return
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NULL, not a string. This causes problems in (at least)
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the fortran interface. */
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return (ncmpi_strerror(ncerr1) ?
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ncmpi_strerror(ncerr1) :
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"Unknown Error");
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#else
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return "Unknown Error";
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#endif
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}
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}
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/** \} */
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