text: /*
   * Copyright 2005-2016 ECMWF.
   *
   * This software is licensed under the terms of the Apache Licence Version 2.0
   * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
   *
   * In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
   * virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
   */
  
  /************************************************
   *  Enrico Fucile
   ***********************************************/
  
  #include "grib_api_internal.h"
  /*
     This is used by make_class.pl
  
     START_CLASS_DEF
     CLASS      = accessor
     SUPER      = grib_accessor_class_gen
     IMPLEMENTS = get_native_type;unpack_string
     IMPLEMENTS = pack_missing;
     IMPLEMENTS = dump
     IMPLEMENTS = compare
     END_CLASS_DEF
  
   */
  
  /* START_CLASS_IMP */
  
  /*
  
  Don't edit anything between START_CLASS_IMP and END_CLASS_IMP
  Instead edit values between START_CLASS_DEF and END_CLASS_DEF
  or edit "accessor.class" and rerun ./make_class.pl
  
  */
  
  static int  get_native_type(grib_accessor*);
  static int pack_missing(grib_accessor*);
  static int unpack_string (grib_accessor*, char*, size_t *len);
  static void dump(grib_accessor*, grib_dumper*);
  static void init_class(grib_accessor_class*);
  static int compare(grib_accessor*, grib_accessor*);
  
  typedef struct grib_accessor_double {
      grib_accessor          att;
  /* Members defined in gen */
  /* Members defined in double */
  } grib_accessor_double;
  
  extern grib_accessor_class* grib_accessor_class_gen;
  
  static grib_accessor_class _grib_accessor_class_double = {
      &grib_accessor_class_gen,                      /* super                     */
      "double",                      /* name                      */
      sizeof(grib_accessor_double),  /* size                      */
      0,                           /* inited */
      &init_class,                 /* init_class */
      0,                       /* init                      */
      0,                  /* post_init                      */
      0,                    /* free mem                       */
      &dump,                       /* describes himself         */
      0,                /* get length of section     */
      0,              /* get length of string      */
      0,                /* get number of values      */
      0,                 /* get number of bytes      */
      0,                /* get offset to bytes           */
      &get_native_type,            /* get native type               */
      0,                /* get sub_section                */
      &pack_missing,               /* grib_pack procedures long      */
      0,                 /* grib_pack procedures long      */
      0,                  /* grib_pack procedures long      */
      0,                /* grib_unpack procedures long    */
      0,                /* grib_pack procedures double    */
      0,              /* grib_unpack procedures double  */
      0,                /* grib_pack procedures string    */
      &unpack_string,              /* grib_unpack procedures string  */
      0,          /* grib_pack array procedures string    */
      0,        /* grib_unpack array procedures string  */
      0,                 /* grib_pack procedures bytes     */
      0,               /* grib_unpack procedures bytes   */
      0,            /* pack_expression */
      0,              /* notify_change   */
      0,                /* update_size   */
      0,            /* preferred_size   */
      0,                    /* resize   */
      0,      /* nearest_smaller_value */
      0,                       /* next accessor    */
      &compare,                    /* compare vs. another accessor   */
      0,     /* unpack only ith value          */
      0,     /* unpack a subarray         */
      0,              		/* clear          */
      0,               		/* clone accessor          */
  };
  
  
  grib_accessor_class* grib_accessor_class_double = &_grib_accessor_class_double;
  
  
  static void init_class(grib_accessor_class* c)
  {
  	c->next_offset	=	(*(c->super))->next_offset;
  	c->string_length	=	(*(c->super))->string_length;
  	c->value_count	=	(*(c->super))->value_count;
  	c->byte_count	=	(*(c->super))->byte_count;
  	c->byte_offset	=	(*(c->super))->byte_offset;
  	c->sub_section	=	(*(c->super))->sub_section;
  	c->is_missing	=	(*(c->super))->is_missing;
  	c->pack_long	=	(*(c->super))->pack_long;
  	c->unpack_long	=	(*(c->super))->unpack_long;
  	c->pack_double	=	(*(c->super))->pack_double;
  	c->unpack_double	=	(*(c->super))->unpack_double;
  	c->pack_string	=	(*(c->super))->pack_string;
  	c->pack_string_array	=	(*(c->super))->pack_string_array;
  	c->unpack_string_array	=	(*(c->super))->unpack_string_array;
  	c->pack_bytes	=	(*(c->super))->pack_bytes;
  	c->unpack_bytes	=	(*(c->super))->unpack_bytes;
  	c->pack_expression	=	(*(c->super))->pack_expression;
  	c->notify_change	=	(*(c->super))->notify_change;
  	c->update_size	=	(*(c->super))->update_size;
  	c->preferred_size	=	(*(c->super))->preferred_size;
  	c->resize	=	(*(c->super))->resize;
  	c->nearest_smaller_value	=	(*(c->super))->nearest_smaller_value;
  	c->next	=	(*(c->super))->next;
  	c->unpack_double_element	=	(*(c->super))->unpack_double_element;
  	c->unpack_double_subarray	=	(*(c->super))->unpack_double_subarray;
  	c->clear	=	(*(c->super))->clear;
  	c->make_clone	=	(*(c->super))->make_clone;
  }
  
  /* END_CLASS_IMP */
  
  
  
  static int  get_native_type(grib_accessor* a){
    return GRIB_TYPE_DOUBLE;
  }
  
  
  static int unpack_string(grib_accessor*a , char*  v, size_t *len){
  
    double val = 0;
    size_t l = 1;
    char repres[1024];
  
    grib_unpack_double (a , &val, &l);
  
      if ((val == GRIB_MISSING_DOUBLE) && ((a->flags & GRIB_ACCESSOR_FLAG_CAN_BE_MISSING) != 0) )
      sprintf(repres,"MISSING");
      else
      sprintf(repres,"%g", val);
  
    l = strlen(repres)+1;
  
    if(l >*len ){
      grib_context_log(a->context, GRIB_LOG_ERROR, "grib_accessor_long : unpack_string : Buffer too small for %s ", a->name );
  
      *len = l;
      return GRIB_BUFFER_TOO_SMALL;
    }
    grib_context_log(a->context,GRIB_LOG_DEBUG, "grib_accessor_long: Casting double %s to string  ", a->name);
  
    *len = l;
  
    strcpy(v,repres);
    return GRIB_SUCCESS;
  
  
  }
  static void dump(grib_accessor* a, grib_dumper* dumper)
  {
    grib_dump_values(dumper,a);
  }
  
  static int compare(grib_accessor* a, grib_accessor* b) {
    int retval=0;
    double *aval=0;
    double *bval=0;
  
    size_t alen = 0;
    size_t blen = 0;
    long count = 0;
    int err=0;
  
    err=grib_value_count(a,&count);
    if (err) return err;
    alen=count;
  
    err=grib_value_count(b,&count);
    if (err) return err;
    blen=count;
  
    if (alen != blen) return GRIB_COUNT_MISMATCH;
  
    aval=(double*)grib_context_malloc(a->context,alen*sizeof(double));
    bval=(double*)grib_context_malloc(b->context,blen*sizeof(double));
  
    grib_unpack_double(a,aval,&alen);
    grib_unpack_double(b,bval,&blen);
  
    retval = GRIB_SUCCESS;
    while (alen != 0) {
      if (*bval != *aval) retval = GRIB_DOUBLE_VALUE_MISMATCH;
      alen--;
    }
  
    grib_context_free(a->context,aval);
    grib_context_free(b->context,bval);
  
    return retval;
  
  }
  
  static int pack_missing(grib_accessor* a){
  
    size_t one = 1;
    double value = GRIB_MISSING_DOUBLE;
  
    if(a->flags & GRIB_ACCESSOR_FLAG_CAN_BE_MISSING)
      return grib_pack_double(a,&value,&one);
    return GRIB_VALUE_CANNOT_BE_MISSING;
  }
  
  /*
  static int is_missing(grib_accessor* a){
  
    size_t one = 1;
    double value = GRIB_MISSING_DOUBLE;
  
    if(a->flags & GRIB_ACCESSOR_FLAG_CAN_BE_MISSING)
    {
      int e=grib_unpack_double(a,&value,&one);
      Assert(e == 0);
      return value == GRIB_MISSING_DOUBLE;
    }
    return 0;
  }
  */
  