nanopb: fix import, update to 0.3.9.2

#include <stddef.h>

#include <stdbool.h>

#include <string.h>

#include <limits.h>

#ifdef PB_ENABLE_MALLOC

#include <stdlib.h>

%.pb.cc: %.proto

	protoc --plugin=protoc-gen-nanopb=${HOME}/var/ess/protocol-modeling/nanopb/generator/protoc-gen-nanopb --nanopb_out=. src/app/prototest/nanopb.proto

	mv src/app/prototest/nanopb.pb.c src/app/prototest/nanopb.pb.cc

	sed -i 's!src/app/prototest/!!' src/app/prototest/nanopb.pb.cc

/* pb_common.c: Common support functions for pb_encode.c and pb_decode.c.

 *

 * 2014 Petteri Aimonen <jpa@kapsi.fi>

 */

#include "pb_common.h"

bool pb_field_iter_begin(pb_field_iter_t *iter, const pb_field_t *fields, void *dest_struct)

{

    iter->start = fields;

    iter->pos = fields;

    iter->required_field_index = 0;

    iter->dest_struct = dest_struct;

    iter->pData = (char*)dest_struct + iter->pos->data_offset;

    iter->pSize = (char*)iter->pData + iter->pos->size_offset;

    return (iter->pos->tag != 0);

}

bool pb_field_iter_next(pb_field_iter_t *iter)

{

    const pb_field_t *prev_field = iter->pos;

    if (prev_field->tag == 0)

    {

        /* Handle empty message types, where the first field is already the terminator.

         * In other cases, the iter->pos never points to the terminator. */

        return false;

    }

    iter->pos++;

    if (iter->pos->tag == 0)

    {

        /* Wrapped back to beginning, reinitialize */

        (void)pb_field_iter_begin(iter, iter->start, iter->dest_struct);

        return false;

    }

    else

    {

        /* Increment the pointers based on previous field size */

        size_t prev_size = prev_field->data_size;

        if (PB_HTYPE(prev_field->type) == PB_HTYPE_ONEOF &&

            PB_HTYPE(iter->pos->type) == PB_HTYPE_ONEOF &&

            iter->pos->data_offset == PB_SIZE_MAX)

        {

            /* Don't advance pointers inside unions */

            return true;

        }

        else if (PB_ATYPE(prev_field->type) == PB_ATYPE_STATIC &&

                 PB_HTYPE(prev_field->type) == PB_HTYPE_REPEATED)

        {

            /* In static arrays, the data_size tells the size of a single entry and

             * array_size is the number of entries */

            prev_size *= prev_field->array_size;

        }

        else if (PB_ATYPE(prev_field->type) == PB_ATYPE_POINTER)

        {

            /* Pointer fields always have a constant size in the main structure.

             * The data_size only applies to the dynamically allocated area. */

            prev_size = sizeof(void*);

        }

        if (PB_HTYPE(prev_field->type) == PB_HTYPE_REQUIRED)

        {

            /* Count the required fields, in order to check their presence in the

             * decoder. */

            iter->required_field_index++;

        }

        iter->pData = (char*)iter->pData + prev_size + iter->pos->data_offset;

        iter->pSize = (char*)iter->pData + iter->pos->size_offset;

        return true;

    }

}

bool pb_field_iter_find(pb_field_iter_t *iter, uint32_t tag)

{

    const pb_field_t *start = iter->pos;

    do {

        if (iter->pos->tag == tag &&

            PB_LTYPE(iter->pos->type) != PB_LTYPE_EXTENSION)

        {

            /* Found the wanted field */

            return true;

        }

        (void)pb_field_iter_next(iter);

    } while (iter->pos != start);

    /* Searched all the way back to start, and found nothing. */

    return false;

}