/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Copyright by The HDF Group. * * Copyright by the Board of Trustees of the University of Illinois. * * All rights reserved. * * * * This file is part of HDF5. The full HDF5 copyright notice, including * * terms governing use, modification, and redistribution, is contained in * * the COPYING file, which can be found at the root of the source code * * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases. * * If you do not have access to either file, you may request a copy from * * help@hdfgroup.org. * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ #include "H5private.h" #include "h5repack.h" #include "h5tools.h" #include "h5tools_utils.h" /*------------------------------------------------------------------------- * File: h5repack.c * Purpose: Public API functions *------------------------------------------------------------------------- */ static int check_options(pack_opt_t *options); static int check_objects(const char* fname, pack_opt_t *options); static const char* get_sfilter(H5Z_filter_t filtn); static int have_request(pack_opt_t *options); /*------------------------------------------------------------------------- * Function: h5repack * * Purpose: locate all high-level HDF5 objects in the file * and compress/chunk them using options * * Algorithm: 2 traversals are made to the file; the 1st builds a list of * the objects, the 2nd makes a copy of them, using the options; * the reason for the 1st traversal is to check for invalid * object name requests * * Return: 0, ok, -1, fail * * Programmer: pvn@ncsa.uiuc.edu * * Date: September, 22, 2003 * *------------------------------------------------------------------------- */ int h5repack(const char* infile, const char* outfile, pack_opt_t *options) { /* check input */ if (check_options(options) < 0) return -1; /* check for objects in input that are in the file */ if (check_objects(infile, options) < 0) return -1; /* copy the objects */ if (copy_objects(infile, outfile, options) < 0) return -1; return 0; } /*------------------------------------------------------------------------- * Function: h5repack_init * * Purpose: initialize options * * Return: 0, ok, -1, fail * *------------------------------------------------------------------------- */ h5repack_init(pack_opt_t *options, int verbose) { int k, n; HDmemset(options, 0, sizeof(pack_opt_t)); options->min_comp = 0; options->verbose = verbose; options->layout_g = H5D_LAYOUT_ERROR; for (n = 0; n < H5_REPACK_MAX_NFILTERS; n++) { options->filter_g[n].filtn = -1; options->filter_g[n].cd_nelmts = 0; for (k = 0; k < CD_VALUES; k++) options->filter_g[n].cd_values[k] = 0; } return (options_table_init(&(options->op_tbl))); } /*------------------------------------------------------------------------- * Function: h5repack_end * * Purpose: free options table * *------------------------------------------------------------------------- */ int h5repack_end(pack_opt_t *options) { return options_table_free(options->op_tbl); } /*------------------------------------------------------------------------- * Function: h5repack_addfilter * * Purpose: add a compression -f option to table * Example: -f dset:GZIP=6 * * Return: 0, ok, -1, fail * *------------------------------------------------------------------------- */ int h5repack_addfilter(const char* str, pack_opt_t *options) { obj_list_t *obj_list = NULL; /* one object list for the -f and -l option entry */ filter_info_t filter; /* filter info for the current -f option entry */ unsigned n_objs; /* number of objects in the current -f or -l option entry */ int is_glb; /* is the filter global */ /* parse the -f option */ if (NULL == (obj_list = parse_filter(str, &n_objs, &filter, options, &is_glb))) return -1; /* if it applies to all objects */ if (is_glb) { int n; n = options->n_filter_g++; /* increase # of global filters */ if (options->n_filter_g > H5_REPACK_MAX_NFILTERS) { error_msg("maximum number of filters exceeded for <%s>\n", str); HDfree(obj_list); return -1; } options->filter_g[n] = filter; } else options_add_filter(obj_list, n_objs, filter, options->op_tbl); HDfree(obj_list); return 0; } /*------------------------------------------------------------------------- * Function: h5repack_addlayout * * Purpose: add a layout option * * Return: 0, ok, -1, fail * *------------------------------------------------------------------------- */ int h5repack_addlayout(const char* str, pack_opt_t *options) { obj_list_t *obj_list = NULL; /*one object list for the -t and -c option entry */ unsigned n_objs; /*number of objects in the current -t or -c option entry */ pack_info_t pack; /*info about layout to extract from parse */ int j; int ret_value = -1; init_packobject(&pack); if (options->all_layout == 1) { error_msg( "invalid layout input: 'all' option is present with other objects <%s>\n", str); return ret_value; } /* parse the layout option */ obj_list = parse_layout(str, &n_objs, &pack, options); if (obj_list) { /* set layout option */ options->layout_g = pack.layout; /* no individual dataset specified */ if (options->all_layout == 1) { if (pack.layout == H5D_CHUNKED) { /* -2 means the NONE option, remove chunking and set the global layout to contiguous */ if (pack.chunk.rank == -2) options->layout_g = H5D_CONTIGUOUS; /* otherwise set the global chunking type */ else { options->chunk_g.rank = pack.chunk.rank; for (j = 0; j < pack.chunk.rank; j++) options->chunk_g.chunk_lengths[j] = pack.chunk.chunk_lengths[j]; } } } /* individual dataset specified */ if (options->all_layout == 0) ret_value = options_add_layout(obj_list, n_objs, &pack, options->op_tbl); HDfree(obj_list); ret_value = 0; } return ret_value; } /* Note: The below copy_named_datatype(), named_datatype_free(), copy_attr() * were located in h5repack_copy.c as static prior to bugfix1726. * Made shared functions as copy_attr() was needed in h5repack_refs.c. * However copy_attr() may be obsoleted when H5Acopy is available and put back * others to static in h5repack_copy.c. */ /*------------------------------------------------------------------------- * Function: copy_named_datatype * * Purpose: Copies the specified datatype anonymously, and returns an open * id for that datatype in the output file. The first time this * is called it scans every named datatype in travt into a * private stack, afterwards it simply scans that stack. The id * returned must be closed after it is no longer needed. * named_datatype_free must be called before the program exits * to free the stack. * * Programmer: Neil Fortner * * Date: April 14, 2009 * *------------------------------------------------------------------------- */ hid_t copy_named_datatype(hid_t type_in, hid_t fidout, named_dt_t **named_dt_head_p, trav_table_t *travt, pack_opt_t *options) { named_dt_t *dt = *named_dt_head_p; /* Stack pointer */ named_dt_t *dt_ret = NULL; /* Datatype to return */ H5O_info_t oinfo; /* Object info of input dtype */ hid_t ret_value = -1; /* The identifier of the named dtype in the out file */ if (H5Oget_info(type_in, &oinfo) < 0) goto done; if (*named_dt_head_p) { /* Stack already exists, search for the datatype */ while (dt && dt->addr_in != oinfo.addr) dt = dt->next; dt_ret = dt; } else { /* Create the stack */ size_t i; for (i = 0; i < travt->nobjs; i++) { if (travt->objs[i].type == H5TRAV_TYPE_NAMED_DATATYPE) { /* Push onto the stack */ if (NULL == (dt = (named_dt_t *)HDmalloc(sizeof(named_dt_t)))) goto done; dt->next = *named_dt_head_p; *named_dt_head_p = dt; /* Update the address and id */ dt->addr_in = travt->objs[i].objno; dt->id_out = -1; /* Check if this type is the one requested */ if (oinfo.addr == dt->addr_in) { dt_ret = dt; } /* end if */ } /* end if */ } /* end for */ } /* end else */ /* Handle the case that the requested datatype was not found. This is * possible if the datatype was committed anonymously in the input file. */ if (!dt_ret) { /* Push the new datatype onto the stack */ if (NULL == (dt_ret = (named_dt_t *)HDmalloc(sizeof(named_dt_t)))) goto done; dt_ret->next = *named_dt_head_p; *named_dt_head_p = dt_ret; /* Update the address and id */ dt_ret->addr_in = oinfo.addr; dt_ret->id_out = -1; } /* end if */ /* If the requested datatype does not yet exist in the output file, copy it * anonymously */ if (dt_ret->id_out < 0) { if (options->use_native == 1) dt_ret->id_out = H5Tget_native_type(type_in, H5T_DIR_DEFAULT); else dt_ret->id_out = H5Tcopy(type_in); if (dt_ret->id_out < 0) goto done; if (H5Tcommit_anon(fidout, dt_ret->id_out, H5P_DEFAULT, H5P_DEFAULT) < 0) goto done; } /* end if */ /* Set return value */ ret_value = dt_ret->id_out; /* Increment the ref count on id_out, because the calling function will try * to close it */ if(H5Iinc_ref(ret_value) < 0) ret_value = -1; done: return (ret_value); } /* end copy_named_datatype */ /*------------------------------------------------------------------------- * Function: named_datatype_free * * Purpose: Frees the stack of named datatypes. * * Programmer: Neil Fortner * * Date: April 14, 2009 * *------------------------------------------------------------------------- */ int named_datatype_free(named_dt_t **named_dt_head_p, int ignore_err) { named_dt_t *dt = *named_dt_head_p; int ret_value = -1; while (dt) { /* Pop the datatype off the stack and free it */ if (H5Tclose(dt->id_out) < 0 && !ignore_err) goto done; dt = dt->next; HDfree(*named_dt_head_p); *named_dt_head_p = dt; } /* end while */ ret_value = 0; done: return (ret_value); } /* end named_datatype_free */ /*------------------------------------------------------------------------- * Function: copy_attr * * Purpose: copy attributes located in LOC_IN, which is obtained either from * loc_id = H5Gopen2( fid, name); * loc_id = H5Dopen2( fid, name); * loc_id = H5Topen2( fid, name); * * Return: 0, ok, -1 no * * Programmer: Pedro Vicente, pvn@ncsa.uiuc.edu * * Date: October, 28, 2003 * *------------------------------------------------------------------------- */ int copy_attr(hid_t loc_in, hid_t loc_out, named_dt_t **named_dt_head_p, trav_table_t *travt, pack_opt_t *options) { int ret_value = 0; /*no need to LEAVE() on ERROR: HERR_INIT(int, SUCCEED) */ hid_t attr_id = -1; /* attr ID */ hid_t attr_out = -1; /* attr ID */ hid_t space_id = -1; /* space ID */ hid_t ftype_id = -1; /* file type ID */ hid_t wtype_id = -1; /* read/write type ID */ size_t msize; /* size of type */ void *buf = NULL; /* data buffer */ hsize_t nelmts; /* number of elements in dataset */ int rank; /* rank of dataset */ htri_t is_named; /* Whether the datatype is named */ hsize_t dims[H5S_MAX_RANK];/* dimensions of dataset */ char name[255]; H5O_info_t oinfo; /* object info */ int j; unsigned u; hbool_t is_ref = 0; H5T_class_t type_class = -1; if (H5Oget_info(loc_in, &oinfo) < 0) HGOTO_ERROR(FAIL, H5E_tools_min_id_g, "H5Oget_info failed"); /*------------------------------------------------------------------------- * copy all attributes *------------------------------------------------------------------------- */ for (u = 0; u < (unsigned) oinfo.num_attrs; u++) { /* open attribute */ if ((attr_id = H5Aopen_by_idx(loc_in, ".", H5_INDEX_CRT_ORDER, H5_ITER_INC, (hsize_t) u, H5P_DEFAULT, H5P_DEFAULT)) < 0) HGOTO_ERROR(FAIL, H5E_tools_min_id_g, "H5Aopen_by_idx failed"); /* get name */ if (H5Aget_name(attr_id, (size_t) 255, name) < 0) HGOTO_ERROR(FAIL, H5E_tools_min_id_g, "H5Pclose failed"); /* get the file datatype */ if ((ftype_id = H5Aget_type(attr_id)) < 0) HGOTO_ERROR(FAIL, H5E_tools_min_id_g, "H5Aget_type failed"); /* Check if the datatype is committed */ if ((is_named = H5Tcommitted(ftype_id)) < 0) HGOTO_ERROR(FAIL, H5E_tools_min_id_g, "H5Tcommitted failed"); if (is_named && travt) { hid_t fidout; /* Create out file id */ if ((fidout = H5Iget_file_id(loc_out)) < 0) HGOTO_ERROR(FAIL, H5E_tools_min_id_g, "H5Iget_file_id failed"); /* Copy named dt */ if ((wtype_id = copy_named_datatype(ftype_id, fidout, named_dt_head_p, travt, options)) < 0) { H5Fclose(fidout); HGOTO_ERROR(FAIL, H5E_tools_min_id_g, "copy_named_datatype failed"); } /* end if */ if (H5Fclose(fidout) < 0) HGOTO_ERROR(FAIL, H5E_tools_min_id_g, "H5Fclose failed"); } /* end if */ else { if (options->use_native == 1) wtype_id = H5Tget_native_type(ftype_id, H5T_DIR_DEFAULT); else wtype_id = H5Tcopy(ftype_id); } /* end else */ /* get the dataspace handle */ if ((space_id = H5Aget_space(attr_id)) < 0) HGOTO_ERROR(FAIL, H5E_tools_min_id_g, "H5Aget_space failed"); /* get dimensions */ if ((rank = H5Sget_simple_extent_dims(space_id, dims, NULL)) < 0) HGOTO_ERROR(FAIL, H5E_tools_min_id_g, "H5Sget_simple_extent_dims failed"); nelmts = 1; for (j = 0; j < rank; j++) nelmts *= dims[j]; if ((msize = H5Tget_size(wtype_id)) == 0) HGOTO_ERROR(FAIL, H5E_tools_min_id_g, "H5Tget_size failed"); /*------------------------------------------------------------------------- * object references are a special case. We cannot just copy the buffers, * but instead we recreate the reference. * This is done on a second sweep of the file that just copies the referenced * objects at copy_refs_attr() *------------------------------------------------------------------------- */ type_class = H5Tget_class(wtype_id); is_ref = (type_class == H5T_REFERENCE); if (type_class == H5T_VLEN || type_class == H5T_ARRAY) { hid_t base_type = -1; base_type = H5Tget_super(ftype_id); is_ref = (is_ref || (H5Tget_class(base_type) == H5T_REFERENCE)); H5Tclose(base_type); } if (type_class == H5T_COMPOUND) { int nmembers = H5Tget_nmembers(wtype_id); for (j = 0; j < nmembers; j++) { hid_t mtid = H5Tget_member_type(wtype_id, (unsigned)j); H5T_class_t mtclass = H5Tget_class(mtid); H5Tclose(mtid); if (mtclass == H5T_REFERENCE) { is_ref = 1; break; } } /* for (j=0; iverbose) printf(FORMAT_OBJ_ATTR, "attr", name); /*------------------------------------------------------------------------- * close *------------------------------------------------------------------------- */ if (H5Tclose(ftype_id) < 0) HGOTO_ERROR(FAIL, H5E_tools_min_id_g, "H5Tclose failed"); if (H5Tclose(wtype_id) < 0) HGOTO_ERROR(FAIL, H5E_tools_min_id_g, "H5Tclose failed"); if (H5Sclose(space_id) < 0) HGOTO_ERROR(FAIL, H5E_tools_min_id_g, "H5Sclose failed"); if (H5Aclose(attr_id) < 0) HGOTO_ERROR(FAIL, H5E_tools_min_id_g, "H5Aclose failed"); } /* u */ return 0; done: H5E_BEGIN_TRY { if (buf) { /* Check if we have VL data and string in the attribute's datatype that must * be reclaimed */ if (TRUE == h5tools_detect_vlen(wtype_id)) H5Dvlen_reclaim(wtype_id, space_id, H5P_DEFAULT, buf); /* Free buf */ HDfree(buf); } /* end if */ H5Tclose(ftype_id); H5Tclose(wtype_id); H5Sclose(space_id); H5Aclose(attr_id); H5Aclose(attr_out); } H5E_END_TRY; return ret_value; } /* end copy_attr() */ /*------------------------------------------------------------------------- * Function: check_options * * Purpose: print options, checks for invalid options * * Return: void, return -1 on error * * Programmer: pvn@ncsa.uiuc.edu * * Date: September, 22, 2003 *------------------------------------------------------------------------- */ static int check_options(pack_opt_t *options) { unsigned int i; int k, j, has_cp = 0, has_ck = 0; char slayout[30]; /*------------------------------------------------------------------------- * objects to layout *------------------------------------------------------------------------- */ if (options->verbose && have_request(options) /* only print if requested */) { printf("Objects to modify layout are...\n"); if (options->all_layout == 1) { switch (options->layout_g) { case H5D_COMPACT: strcpy(slayout, "compact"); break; case H5D_CONTIGUOUS: strcpy(slayout, "contiguous"); break; case H5D_CHUNKED: strcpy(slayout, "chunked"); break; case H5D_LAYOUT_ERROR: case H5D_NLAYOUTS: error_msg("invalid layout\n"); return -1; default: strcpy(slayout, "invalid layout\n"); return -1; } printf(" Apply %s layout to all\n", slayout); if (H5D_CHUNKED == options->layout_g) { printf("with dimension ["); for (j = 0; j < options->chunk_g.rank; j++) printf("%d ", (int) options->chunk_g.chunk_lengths[j]); printf("]\n"); } } }/* verbose */ for (i = 0; i < options->op_tbl->nelems; i++) { char* name = options->op_tbl->objs[i].path; if (options->op_tbl->objs[i].chunk.rank > 0) { if (options->verbose) { printf(" <%s> with chunk size ", name); for (k = 0; k < options->op_tbl->objs[i].chunk.rank; k++) printf("%d ", (int) options->op_tbl->objs[i].chunk.chunk_lengths[k]); printf("\n"); } has_ck = 1; } else if (options->op_tbl->objs[i].chunk.rank == -2) { if (options->verbose) printf(" <%s> %s\n", name, "NONE (contigous)"); has_ck = 1; } } if (options->all_layout == 1 && has_ck) { error_msg( "invalid chunking input: 'all' option\ is present with other objects\n"); return -1; } /*------------------------------------------------------------------------- * objects to filter *------------------------------------------------------------------------- */ if (options->verbose && have_request(options) /* only print if requested */) { printf("Objects to apply filter are...\n"); if (options->all_filter == 1) { for (k = 0; k < options->n_filter_g; k++) { H5Z_filter_t filtn = options->filter_g[k].filtn; switch (filtn) { case H5Z_FILTER_NONE: printf(" Uncompress all\n"); break; case H5Z_FILTER_SHUFFLE: case H5Z_FILTER_FLETCHER32: printf(" All with %s\n", get_sfilter(filtn)); break; case H5Z_FILTER_SZIP: case H5Z_FILTER_DEFLATE: printf(" All with %s, parameter %d\n", get_sfilter(filtn), options->filter_g[k].cd_values[0]); break; default: printf(" User Defined %d\n", filtn); break; } /* k */ }; } } /* verbose */ for (i = 0; i < options->op_tbl->nelems; i++) { pack_info_t pack = options->op_tbl->objs[i]; char* name = pack.path; for (j = 0; j < pack.nfilters; j++) { if (options->verbose) { printf(" <%s> with %s filter\n", name, get_sfilter(pack.filter[j].filtn)); } has_cp = 1; } /* j */ } /* i */ if (options->all_filter == 1 && has_cp) { error_msg( "invalid compression input: 'all' option\ is present with other objects\n"); return -1; } /*------------------------------------------------------------------------- * check options for the latest format *------------------------------------------------------------------------- */ if (options->grp_compact < 0) { error_msg( "invalid maximum number of links to store as header messages\n"); return -1; } if (options->grp_indexed < 0) { error_msg( "invalid minimum number of links to store in the indexed format\n"); return -1; } if (options->grp_indexed > options->grp_compact) { error_msg( "minimum indexed size is greater than the maximum compact size\n"); return -1; } for (i = 0; i < 8; i++) { if (options->msg_size[i] < 0) { error_msg("invalid shared message size\n"); return -1; } } /*-------------------------------------------------------------------------------- * verify new user userblock options; file name must be present *--------------------------------------------------------------------------------- */ if (options->ublock_filename != NULL && options->ublock_size == 0) { if (options->verbose) { printf( "Warning: user block size missing for file %s. Assigning a default size of 1024...\n", options->ublock_filename); options->ublock_size = 1024; } } if (options->ublock_filename == NULL && options->ublock_size != 0) { error_msg("file name missing for user block\n", options->ublock_filename); return -1; } /*-------------------------------------------------------------------------------- * verify alignment options; threshold is zero default but alignment not *--------------------------------------------------------------------------------- */ if (options->alignment == 0 && options->threshold != 0) { error_msg("alignment for H5Pset_alignment missing\n"); return -1; } return 0; } /*------------------------------------------------------------------------- * Function: check_objects * * Purpose: locate all HDF5 objects in the file and compare with user * supplied list * * Return: 0, ok, -1 no * * Programmer: Pedro Vicente, pvn@ncsa.uiuc.edu * * Date: September, 23, 2003 * *------------------------------------------------------------------------- */ static int check_objects(const char* fname, pack_opt_t *options) { hid_t fid; unsigned int i; trav_table_t *travt = NULL; /* nothing to do */ if (options->op_tbl->nelems == 0) return 0; /*------------------------------------------------------------------------- * open the file *------------------------------------------------------------------------- */ if ((fid = h5tools_fopen(fname, H5F_ACC_RDONLY, H5P_DEFAULT, NULL, NULL, 0)) < 0) { printf("<%s>: %s\n", fname, H5FOPENERROR); return -1; } /*------------------------------------------------------------------------- * get the list of objects in the file *------------------------------------------------------------------------- */ /* Initialize indexing options */ h5trav_set_index(sort_by, sort_order); /* init table */ trav_table_init(&travt); /* get the list of objects in the file */ if (h5trav_gettable(fid, travt) < 0) goto out; /*------------------------------------------------------------------------- * compare with user supplied list *------------------------------------------------------------------------- */ if (options->verbose) printf("Opening file <%s>. Searching for objects to modify...\n", fname); for (i = 0; i < options->op_tbl->nelems; i++) { char* name = options->op_tbl->objs[i].path; if (options->verbose) printf(" <%s>", name); /* the input object names are present in the file and are valid */ if (h5trav_getindext(name, travt) < 0) { error_msg("%s Could not find <%s> in file <%s>. Exiting...\n", (options->verbose ? "\n" : ""), name, fname); goto out; } if (options->verbose) printf("...Found\n"); /* check for extra filter conditions */ switch (options->op_tbl->objs[i].filter->filtn) { /* chunk size must be smaller than pixels per block */ case H5Z_FILTER_SZIP: { int j; hsize_t csize = 1; unsigned ppb = options->op_tbl->objs[i].filter->cd_values[0]; hsize_t dims[H5S_MAX_RANK]; int rank; hid_t did; hid_t sid; if (options->op_tbl->objs[i].chunk.rank > 0) { rank = options->op_tbl->objs[i].chunk.rank; for (j = 0; j < rank; j++) csize *= options->op_tbl->objs[i].chunk.chunk_lengths[j]; } else { if ((did = H5Dopen2(fid, name, H5P_DEFAULT)) < 0) goto out; if ((sid = H5Dget_space(did)) < 0) goto out; if ((rank = H5Sget_simple_extent_ndims(sid)) < 0) goto out; HDmemset(dims, 0, sizeof dims); if (H5Sget_simple_extent_dims(sid, dims, NULL) < 0) goto out; for (j = 0; j < rank; j++) csize *= dims[j]; if (H5Sclose(sid) < 0) goto out; if (H5Dclose(did) < 0) goto out; } if (csize < ppb) { printf( " \n"); goto out; } } break; default: break; } } /* i */ /*------------------------------------------------------------------------- * close *------------------------------------------------------------------------- */ H5Fclose(fid); trav_table_free(travt); return 0; out: H5Fclose(fid); trav_table_free(travt); return -1; } /*------------------------------------------------------------------------- * Function: have_request * * Purpose: check if a filter or layout was requested * * Return: 1 yes, 0 no * * Date: May, 24, 2007 * *------------------------------------------------------------------------- */ static int have_request(pack_opt_t *options) { if (options->all_filter || options->all_layout || options->op_tbl->nelems) return 1; return 0; } /*------------------------------------------------------------------------- * Function: get_sfilter * * Purpose: return the filter as a string name * * Return: name of filter, exit on error * *------------------------------------------------------------------------- */ static const char* get_sfilter(H5Z_filter_t filtn) { if (filtn == H5Z_FILTER_NONE) return "NONE"; else if (filtn == H5Z_FILTER_DEFLATE) return "GZIP"; else if (filtn == H5Z_FILTER_SZIP) return "SZIP"; else if (filtn == H5Z_FILTER_SHUFFLE) return "SHUFFLE"; else if (filtn == H5Z_FILTER_FLETCHER32) return "FLETCHER32"; else if (filtn == H5Z_FILTER_NBIT) return "NBIT"; else if (filtn == H5Z_FILTER_SCALEOFFSET) return "SOFF"; else return "UD"; }