/*
 * 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.
 */

#include "grib_api_internal.h"
/*
   This is used by make_class.pl

   START_CLASS_DEF
   CLASS      = accessor
   SUPER      = grib_accessor_class_ascii
   IMPLEMENTS = pack_string;unpack_string;value_count
   IMPLEMENTS = init;string_length
   MEMBERS= grib_arguments* args  
   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 pack_string(grib_accessor*, const char*, size_t *len);
static int unpack_string (grib_accessor*, char*, size_t *len);
static size_t string_length(grib_accessor*);
static int value_count(grib_accessor*,long*);
static void init(grib_accessor*,const long, grib_arguments* );
static void init_class(grib_accessor_class*);

typedef struct grib_accessor_sprintf {
    grib_accessor          att;
/* Members defined in gen */
/* Members defined in ascii */
/* Members defined in sprintf */
	grib_arguments* args;
} grib_accessor_sprintf;

extern grib_accessor_class* grib_accessor_class_ascii;

static grib_accessor_class _grib_accessor_class_sprintf = {
    &grib_accessor_class_ascii,                      /* super                     */
    "sprintf",                      /* name                      */
    sizeof(grib_accessor_sprintf),  /* size                      */
    0,                           /* inited */
    &init_class,                 /* init_class */
    &init,                       /* init                      */
    0,                  /* post_init                      */
    0,                    /* free mem                       */
    0,                       /* describes himself         */
    0,                /* get length of section     */
    &string_length,              /* get length of string      */
    &value_count,                /* get number of values      */
    0,                 /* get number of bytes      */
    0,                /* get offset to bytes           */
    0,            /* get native type               */
    0,                /* get sub_section                */
    0,               /* 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  */
    &pack_string,                /* grib_pack procedures string    */
    &unpack_string,              /* grib_unpack 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    */
    0,                    /* compare vs. another accessor   */
    0,     /* unpack only ith value          */
    0,     /* unpack a subarray         */
    0,             		/* clear          */
};


grib_accessor_class* grib_accessor_class_sprintf = &_grib_accessor_class_sprintf;


static void init_class(grib_accessor_class* c)
{
	c->dump	=	(*(c->super))->dump;
	c->next_offset	=	(*(c->super))->next_offset;
	c->byte_count	=	(*(c->super))->byte_count;
	c->byte_offset	=	(*(c->super))->byte_offset;
	c->get_native_type	=	(*(c->super))->get_native_type;
	c->sub_section	=	(*(c->super))->sub_section;
	c->pack_missing	=	(*(c->super))->pack_missing;
	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_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->compare	=	(*(c->super))->compare;
	c->unpack_double_element	=	(*(c->super))->unpack_double_element;
	c->unpack_double_subarray	=	(*(c->super))->unpack_double_subarray;
	c->clear	=	(*(c->super))->clear;
}

/* END_CLASS_IMP */

static void init(grib_accessor* a,const long l, grib_arguments* c)
{
    grib_accessor_sprintf* self = (grib_accessor_sprintf*)a;
    self->args = c;
}

static int pack_string(grib_accessor* a, const char* val, size_t *len)
{
    return GRIB_NOT_IMPLEMENTED;
}

static int unpack_string(grib_accessor* a, char* val, size_t *len)
{
    grib_accessor_sprintf* self = (grib_accessor_sprintf*)a;
    char result[1024];
    char tempBuffer[1024];
    char sres[1024];
    long ires = 0;
    double dres= 0;
    int  i = 0;
    size_t replen = 1024;
    int ret = GRIB_SUCCESS;
    int carg= 0;
    int is_missing = 0;
    const char* uname = NULL;
    const char* tempname = NULL;

    uname = grib_arguments_get_string(a->parent->h,self->args,carg++);
    sprintf(result,"%s","");

    for(i=0;i<strlen(uname);i++)
    {
        if(uname[i]=='%'){
            int precision=999;
            i++;
            if (uname[i]=='.') {
                char *theEnd=NULL,*start;
                start=(char*)&(uname[++i]);
                precision=strtol(start,&theEnd,10);
                Assert(*theEnd!=0);
                while (uname[i] != *theEnd) i++;
            }
            switch(uname[i]){
            case 'd':
                tempname = grib_arguments_get_name(a->parent->h,self->args,carg++);

                if((ret = grib_get_long_internal(a->parent->h,tempname,&ires)) != GRIB_SUCCESS)
                    return ret;
                /* Bug GRIB-56: Check to see if the key is missing */
                is_missing = grib_is_missing(a->parent->h,tempname,&ret);
                if (ret != GRIB_SUCCESS)
                    return ret;
                if (is_missing) {
                    sprintf(tempBuffer,"%sMISSING",result);
                    strcpy(result, tempBuffer);
                }
                else {
                    /* Not missing so print it */
                    if (precision!=999) {
                        sprintf(tempBuffer,"%s%.*ld",result, precision, ires);
                        strcpy(result, tempBuffer);
                    } else {
                        sprintf(tempBuffer,"%s%ld",result, ires);
                        strcpy(result, tempBuffer);
                    }
                }
                break;

            case 'g':
                tempname = grib_arguments_get_name(a->parent->h,self->args,carg++);
                if((ret = grib_get_double_internal(a->parent->h,tempname,&dres)) != GRIB_SUCCESS)
                    return ret;
                sprintf(tempBuffer,"%s%g",result, dres);
                strcpy(result, tempBuffer);

                break;

            case 's':
                tempname = grib_arguments_get_name(a->parent->h,self->args,carg++);
                if((ret = grib_get_string_internal(a->parent->h,tempname,sres, &replen )) != GRIB_SUCCESS)
                    return ret;
                sprintf(tempBuffer, "%s%s",result, sres);
                strcpy(result, tempBuffer);
                replen = 1024;
            }
        }
        else {
            sprintf(tempBuffer,"%s%c",result, uname[i]);
            strcpy(result, tempBuffer);
        }
    }

    replen = strlen(result)+1;

    if(*len < replen){
        *len = replen;
        return GRIB_ARRAY_TOO_SMALL;
    }
    *len = replen;

    sprintf(val,"%s",result);

    return GRIB_SUCCESS;
}

static int value_count(grib_accessor* a,long* count)
{
    *count=1;
    return 0;
}

static size_t string_length(grib_accessor* a)
{
    return 1024;
}
