remove external libraries from main branch

3 files changed, 0 insertions, 2518 deletions

diff --git a/src/lib/nanopb/pb_common.cc b/src/lib/nanopb/pb_common.cc
deleted file mode 100644
index 4fb7186..0000000
--- a/src/lib/nanopb/pb_common.cc
+++ /dev/null
@@ -1,97 +0,0 @@
-/* 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;
-}
-
-
diff --git a/src/lib/nanopb/pb_decode.cc b/src/lib/nanopb/pb_decode.cc
deleted file mode 100644
index d08259c..0000000
--- a/src/lib/nanopb/pb_decode.cc
+++ /dev/null
@@ -1,1528 +0,0 @@
-/* pb_decode.c -- decode a protobuf using minimal resources
- *
- * 2011 Petteri Aimonen <jpa@kapsi.fi>
- */
-
-/* Use the GCC warn_unused_result attribute to check that all return values
- * are propagated correctly. On other compilers and gcc before 3.4.0 just
- * ignore the annotation.
- */
-#if !defined(__GNUC__) || ( __GNUC__ < 3) || (__GNUC__ == 3 && __GNUC_MINOR__ < 4)
-    #define checkreturn
-#else
-    #define checkreturn __attribute__((warn_unused_result))
-#endif
-
-#include "pb.h"
-#include "pb_decode.h"
-#include "pb_common.h"
-
-/**************************************
- * Declarations internal to this file *
- **************************************/
-
-typedef bool (*pb_decoder_t)(pb_istream_t *stream, const pb_field_t *field, void *dest) checkreturn;
-
-static bool checkreturn buf_read(pb_istream_t *stream, pb_byte_t *buf, size_t count);
-static bool checkreturn read_raw_value(pb_istream_t *stream, pb_wire_type_t wire_type, pb_byte_t *buf, size_t *size);
-static bool checkreturn decode_static_field(pb_istream_t *stream, pb_wire_type_t wire_type, pb_field_iter_t *iter);
-static bool checkreturn decode_callback_field(pb_istream_t *stream, pb_wire_type_t wire_type, pb_field_iter_t *iter);
-static bool checkreturn decode_field(pb_istream_t *stream, pb_wire_type_t wire_type, pb_field_iter_t *iter);
-static void iter_from_extension(pb_field_iter_t *iter, pb_extension_t *extension);
-static bool checkreturn default_extension_decoder(pb_istream_t *stream, pb_extension_t *extension, uint32_t tag, pb_wire_type_t wire_type);
-static bool checkreturn decode_extension(pb_istream_t *stream, uint32_t tag, pb_wire_type_t wire_type, pb_field_iter_t *iter);
-static bool checkreturn find_extension_field(pb_field_iter_t *iter);
-static void pb_field_set_to_default(pb_field_iter_t *iter);
-static void pb_message_set_to_defaults(const pb_field_t fields[], void *dest_struct);
-static bool checkreturn pb_dec_varint(pb_istream_t *stream, const pb_field_t *field, void *dest);
-static bool checkreturn pb_decode_varint32_eof(pb_istream_t *stream, uint32_t *dest, bool *eof);
-static bool checkreturn pb_dec_uvarint(pb_istream_t *stream, const pb_field_t *field, void *dest);
-static bool checkreturn pb_dec_svarint(pb_istream_t *stream, const pb_field_t *field, void *dest);
-static bool checkreturn pb_dec_fixed32(pb_istream_t *stream, const pb_field_t *field, void *dest);
-static bool checkreturn pb_dec_fixed64(pb_istream_t *stream, const pb_field_t *field, void *dest);
-static bool checkreturn pb_dec_bytes(pb_istream_t *stream, const pb_field_t *field, void *dest);
-static bool checkreturn pb_dec_string(pb_istream_t *stream, const pb_field_t *field, void *dest);
-static bool checkreturn pb_dec_submessage(pb_istream_t *stream, const pb_field_t *field, void *dest);
-static bool checkreturn pb_dec_fixed_length_bytes(pb_istream_t *stream, const pb_field_t *field, void *dest);
-static bool checkreturn pb_skip_varint(pb_istream_t *stream);
-static bool checkreturn pb_skip_string(pb_istream_t *stream);
-
-#ifdef PB_ENABLE_MALLOC
-static bool checkreturn allocate_field(pb_istream_t *stream, void *pData, size_t data_size, size_t array_size);
-static bool checkreturn pb_release_union_field(pb_istream_t *stream, pb_field_iter_t *iter);
-static void pb_release_single_field(const pb_field_iter_t *iter);
-#endif
-
-#ifdef PB_WITHOUT_64BIT
-#define pb_int64_t int32_t
-#define pb_uint64_t uint32_t
-#else
-#define pb_int64_t int64_t
-#define pb_uint64_t uint64_t
-#endif
-
-/* --- Function pointers to field decoders ---
- * Order in the array must match pb_action_t LTYPE numbering.
- */
-static const pb_decoder_t PB_DECODERS[PB_LTYPES_COUNT] = {
-    &pb_dec_varint,
-    &pb_dec_uvarint,
-    &pb_dec_svarint,
-    &pb_dec_fixed32,
-    &pb_dec_fixed64,
-    
-    &pb_dec_bytes,
-    &pb_dec_string,
-    &pb_dec_submessage,
-    NULL, /* extensions */
-    &pb_dec_fixed_length_bytes
-};
-
-/*******************************
- * pb_istream_t implementation *
- *******************************/
-
-static bool checkreturn buf_read(pb_istream_t *stream, pb_byte_t *buf, size_t count)
-{
-    size_t i;
-    const pb_byte_t *source = (const pb_byte_t*)stream->state;
-    stream->state = (pb_byte_t*)stream->state + count;
-    
-    if (buf != NULL)
-    {
-        for (i = 0; i < count; i++)
-            buf[i] = source[i];
-    }
-    
-    return true;
-}
-
-bool checkreturn pb_read(pb_istream_t *stream, pb_byte_t *buf, size_t count)
-{
-#ifndef PB_BUFFER_ONLY
-	if (buf == NULL && stream->callback != buf_read)
-	{
-		/* Skip input bytes */
-		pb_byte_t tmp[16];
-		while (count > 16)
-		{
-			if (!pb_read(stream, tmp, 16))
-				return false;
-			
-			count -= 16;
-		}
-		
-		return pb_read(stream, tmp, count);
-	}
-#endif
-
-    if (stream->bytes_left < count)
-        PB_RETURN_ERROR(stream, "end-of-stream");
-    
-#ifndef PB_BUFFER_ONLY
-    if (!stream->callback(stream, buf, count))
-        PB_RETURN_ERROR(stream, "io error");
-#else
-    if (!buf_read(stream, buf, count))
-        return false;
-#endif
-    
-    stream->bytes_left -= count;
-    return true;
-}
-
-/* Read a single byte from input stream. buf may not be NULL.
- * This is an optimization for the varint decoding. */
-static bool checkreturn pb_readbyte(pb_istream_t *stream, pb_byte_t *buf)
-{
-    if (stream->bytes_left == 0)
-        PB_RETURN_ERROR(stream, "end-of-stream");
-
-#ifndef PB_BUFFER_ONLY
-    if (!stream->callback(stream, buf, 1))
-        PB_RETURN_ERROR(stream, "io error");
-#else
-    *buf = *(const pb_byte_t*)stream->state;
-    stream->state = (pb_byte_t*)stream->state + 1;
-#endif
-
-    stream->bytes_left--;
-    
-    return true;    
-}
-
-pb_istream_t pb_istream_from_buffer(const pb_byte_t *buf, size_t bufsize)
-{
-    pb_istream_t stream;
-    /* Cast away the const from buf without a compiler error.  We are
-     * careful to use it only in a const manner in the callbacks.
-     */
-    union {
-        void *state;
-        const void *c_state;
-    } state;
-#ifdef PB_BUFFER_ONLY
-    stream.callback = NULL;
-#else
-    stream.callback = &buf_read;
-#endif
-    state.c_state = buf;
-    stream.state = state.state;
-    stream.bytes_left = bufsize;
-#ifndef PB_NO_ERRMSG
-    stream.errmsg = NULL;
-#endif
-    return stream;
-}
-
-/********************
- * Helper functions *
- ********************/
-
-static bool checkreturn pb_decode_varint32_eof(pb_istream_t *stream, uint32_t *dest, bool *eof)
-{
-    pb_byte_t byte;
-    uint32_t result;
-    
-    if (!pb_readbyte(stream, &byte))
-    {
-        if (stream->bytes_left == 0)
-        {
-            if (eof)
-            {
-                *eof = true;
-            }
-        }
-
-        return false;
-    }
-    
-    if ((byte & 0x80) == 0)
-    {
-        /* Quick case, 1 byte value */
-        result = byte;
-    }
-    else
-    {
-        /* Multibyte case */
-        uint_fast8_t bitpos = 7;
-        result = byte & 0x7F;
-        
-        do
-        {
-            if (!pb_readbyte(stream, &byte))
-                return false;
-            
-            if (bitpos >= 32)
-            {
-                /* Note: The varint could have trailing 0x80 bytes, or 0xFF for negative. */
-                uint8_t sign_extension = (bitpos < 63) ? 0xFF : 0x01;
-                
-                if ((byte & 0x7F) != 0x00 && ((result >> 31) == 0 || byte != sign_extension))
-                {
-                    PB_RETURN_ERROR(stream, "varint overflow");
-                }
-            }
-            else
-            {
-                result |= (uint32_t)(byte & 0x7F) << bitpos;
-            }
-            bitpos = (uint_fast8_t)(bitpos + 7);
-        } while (byte & 0x80);
-        
-        if (bitpos == 35 && (byte & 0x70) != 0)
-        {
-            /* The last byte was at bitpos=28, so only bottom 4 bits fit. */
-            PB_RETURN_ERROR(stream, "varint overflow");
-        }
-   }
-   
-   *dest = result;
-   return true;
-}
-
-bool checkreturn pb_decode_varint32(pb_istream_t *stream, uint32_t *dest)
-{
-    return pb_decode_varint32_eof(stream, dest, NULL);
-}
-
-#ifndef PB_WITHOUT_64BIT
-bool checkreturn pb_decode_varint(pb_istream_t *stream, uint64_t *dest)
-{
-    pb_byte_t byte;
-    uint_fast8_t bitpos = 0;
-    uint64_t result = 0;
-    
-    do
-    {
-        if (bitpos >= 64)
-            PB_RETURN_ERROR(stream, "varint overflow");
-        
-        if (!pb_readbyte(stream, &byte))
-            return false;
-
-        result |= (uint64_t)(byte & 0x7F) << bitpos;
-        bitpos = (uint_fast8_t)(bitpos + 7);
-    } while (byte & 0x80);
-    
-    *dest = result;
-    return true;
-}
-#endif
-
-bool checkreturn pb_skip_varint(pb_istream_t *stream)
-{
-    pb_byte_t byte;
-    do
-    {
-        if (!pb_read(stream, &byte, 1))
-            return false;
-    } while (byte & 0x80);
-    return true;
-}
-
-bool checkreturn pb_skip_string(pb_istream_t *stream)
-{
-    uint32_t length;
-    if (!pb_decode_varint32(stream, &length))
-        return false;
-    
-    return pb_read(stream, NULL, length);
-}
-
-bool checkreturn pb_decode_tag(pb_istream_t *stream, pb_wire_type_t *wire_type, uint32_t *tag, bool *eof)
-{
-    uint32_t temp;
-    *eof = false;
-    *wire_type = (pb_wire_type_t) 0;
-    *tag = 0;
-    
-    if (!pb_decode_varint32_eof(stream, &temp, eof))
-    {
-        return false;
-    }
-    
-    if (temp == 0)
-    {
-        *eof = true; /* Special feature: allow 0-terminated messages. */
-        return false;
-    }
-    
-    *tag = temp >> 3;
-    *wire_type = (pb_wire_type_t)(temp & 7);
-    return true;
-}
-
-bool checkreturn pb_skip_field(pb_istream_t *stream, pb_wire_type_t wire_type)
-{
-    switch (wire_type)
-    {
-        case PB_WT_VARINT: return pb_skip_varint(stream);
-        case PB_WT_64BIT: return pb_read(stream, NULL, 8);
-        case PB_WT_STRING: return pb_skip_string(stream);
-        case PB_WT_32BIT: return pb_read(stream, NULL, 4);
-        default: PB_RETURN_ERROR(stream, "invalid wire_type");
-    }
-}
-
-/* Read a raw value to buffer, for the purpose of passing it to callback as
- * a substream. Size is maximum size on call, and actual size on return.
- */
-static bool checkreturn read_raw_value(pb_istream_t *stream, pb_wire_type_t wire_type, pb_byte_t *buf, size_t *size)
-{
-    size_t max_size = *size;
-    switch (wire_type)
-    {
-        case PB_WT_VARINT:
-            *size = 0;
-            do
-            {
-                (*size)++;
-                if (*size > max_size) return false;
-                if (!pb_read(stream, buf, 1)) return false;
-            } while (*buf++ & 0x80);
-            return true;
-            
-        case PB_WT_64BIT:
-            *size = 8;
-            return pb_read(stream, buf, 8);
-        
-        case PB_WT_32BIT:
-            *size = 4;
-            return pb_read(stream, buf, 4);
-        
-        case PB_WT_STRING:
-            /* Calling read_raw_value with a PB_WT_STRING is an error.
-             * Explicitly handle this case and fallthrough to default to avoid
-             * compiler warnings.
-             */
-
-        default: PB_RETURN_ERROR(stream, "invalid wire_type");
-    }
-}
-
-/* Decode string length from stream and return a substream with limited length.
- * Remember to close the substream using pb_close_string_substream().
- */
-bool checkreturn pb_make_string_substream(pb_istream_t *stream, pb_istream_t *substream)
-{
-    uint32_t size;
-    if (!pb_decode_varint32(stream, &size))
-        return false;
-    
-    *substream = *stream;
-    if (substream->bytes_left < size)
-        PB_RETURN_ERROR(stream, "parent stream too short");
-    
-    substream->bytes_left = size;
-    stream->bytes_left -= size;
-    return true;
-}
-
-bool checkreturn pb_close_string_substream(pb_istream_t *stream, pb_istream_t *substream)
-{
-    if (substream->bytes_left) {
-        if (!pb_read(substream, NULL, substream->bytes_left))
-            return false;
-    }
-
-    stream->state = substream->state;
-
-#ifndef PB_NO_ERRMSG
-    stream->errmsg = substream->errmsg;
-#endif
-    return true;
-}
-
-/*************************
- * Decode a single field *
- *************************/
-
-static bool checkreturn decode_static_field(pb_istream_t *stream, pb_wire_type_t wire_type, pb_field_iter_t *iter)
-{
-    pb_type_t type;
-    pb_decoder_t func;
-    
-    type = iter->pos->type;
-    func = PB_DECODERS[PB_LTYPE(type)];
-
-    switch (PB_HTYPE(type))
-    {
-        case PB_HTYPE_REQUIRED:
-            return func(stream, iter->pos, iter->pData);
-            
-        case PB_HTYPE_OPTIONAL:
-            if (iter->pSize != iter->pData)
-                *(bool*)iter->pSize = true;
-            return func(stream, iter->pos, iter->pData);
-    
-        case PB_HTYPE_REPEATED:
-            if (wire_type == PB_WT_STRING
-                && PB_LTYPE(type) <= PB_LTYPE_LAST_PACKABLE)
-            {
-                /* Packed array */
-                bool status = true;
-                pb_size_t *size = (pb_size_t*)iter->pSize;
-
-                pb_istream_t substream;
-                if (!pb_make_string_substream(stream, &substream))
-                    return false;
-
-                while (substream.bytes_left > 0 && *size < iter->pos->array_size)
-                {
-                    void *pItem = (char*)iter->pData + iter->pos->data_size * (*size);
-                    if (!func(&substream, iter->pos, pItem))
-                    {
-                        status = false;
-                        break;
-                    }
-                    (*size)++;
-                }
-
-                if (substream.bytes_left != 0)
-                    PB_RETURN_ERROR(stream, "array overflow");
-                if (!pb_close_string_substream(stream, &substream))
-                    return false;
-
-                return status;
-            }
-            else
-            {
-                /* Repeated field */
-                pb_size_t *size = (pb_size_t*)iter->pSize;
-                char *pItem = (char*)iter->pData + iter->pos->data_size * (*size);
-
-                if ((*size)++ >= iter->pos->array_size)
-                    PB_RETURN_ERROR(stream, "array overflow");
-
-                return func(stream, iter->pos, pItem);
-            }
-
-        case PB_HTYPE_ONEOF:
-            *(pb_size_t*)iter->pSize = iter->pos->tag;
-            if (PB_LTYPE(type) == PB_LTYPE_SUBMESSAGE)
-            {
-                /* We memset to zero so that any callbacks are set to NULL.
-                 * Then set any default values. */
-                memset(iter->pData, 0, iter->pos->data_size);
-                pb_message_set_to_defaults((const pb_field_t*)iter->pos->ptr, iter->pData);
-            }
-            return func(stream, iter->pos, iter->pData);
-
-        default:
-            PB_RETURN_ERROR(stream, "invalid field type");
-    }
-}
-
-#ifdef PB_ENABLE_MALLOC
-/* Allocate storage for the field and store the pointer at iter->pData.
- * array_size is the number of entries to reserve in an array.
- * Zero size is not allowed, use pb_free() for releasing.
- */
-static bool checkreturn allocate_field(pb_istream_t *stream, void *pData, size_t data_size, size_t array_size)
-{    
-    void *ptr = *(void**)pData;
-    
-    if (data_size == 0 || array_size == 0)
-        PB_RETURN_ERROR(stream, "invalid size");
-    
-    /* Check for multiplication overflows.
-     * This code avoids the costly division if the sizes are small enough.
-     * Multiplication is safe as long as only half of bits are set
-     * in either multiplicand.
-     */
-    {
-        const size_t check_limit = (size_t)1 << (sizeof(size_t) * 4);
-        if (data_size >= check_limit || array_size >= check_limit)
-        {
-            const size_t size_max = (size_t)-1;
-            if (size_max / array_size < data_size)
-            {
-                PB_RETURN_ERROR(stream, "size too large");
-            }
-        }
-    }
-    
-    /* Allocate new or expand previous allocation */
-    /* Note: on failure the old pointer will remain in the structure,
-     * the message must be freed by caller also on error return. */
-    ptr = pb_realloc(ptr, array_size * data_size);
-    if (ptr == NULL)
-        PB_RETURN_ERROR(stream, "realloc failed");
-    
-    *(void**)pData = ptr;
-    return true;
-}
-
-/* Clear a newly allocated item in case it contains a pointer, or is a submessage. */
-static void initialize_pointer_field(void *pItem, pb_field_iter_t *iter)
-{
-    if (PB_LTYPE(iter->pos->type) == PB_LTYPE_STRING ||
-        PB_LTYPE(iter->pos->type) == PB_LTYPE_BYTES)
-    {
-        *(void**)pItem = NULL;
-    }
-    else if (PB_LTYPE(iter->pos->type) == PB_LTYPE_SUBMESSAGE)
-    {
-        /* We memset to zero so that any callbacks are set to NULL.
-         * Then set any default values. */
-        memset(pItem, 0, iter->pos->data_size);
-        pb_message_set_to_defaults((const pb_field_t *) iter->pos->ptr, pItem);
-    }
-}
-#endif
-
-static bool checkreturn decode_pointer_field(pb_istream_t *stream, pb_wire_type_t wire_type, pb_field_iter_t *iter)
-{
-#ifndef PB_ENABLE_MALLOC
-    PB_UNUSED(wire_type);
-    PB_UNUSED(iter);
-    PB_RETURN_ERROR(stream, "no malloc support");
-#else
-    pb_type_t type;
-    pb_decoder_t func;
-    
-    type = iter->pos->type;
-    func = PB_DECODERS[PB_LTYPE(type)];
-    
-    switch (PB_HTYPE(type))
-    {
-        case PB_HTYPE_REQUIRED:
-        case PB_HTYPE_OPTIONAL:
-        case PB_HTYPE_ONEOF:
-            if (PB_LTYPE(type) == PB_LTYPE_SUBMESSAGE &&
-                *(void**)iter->pData != NULL)
-            {
-                /* Duplicate field, have to release the old allocation first. */
-                pb_release_single_field(iter);
-            }
-        
-            if (PB_HTYPE(type) == PB_HTYPE_ONEOF)
-            {
-                *(pb_size_t*)iter->pSize = iter->pos->tag;
-            }
-
-            if (PB_LTYPE(type) == PB_LTYPE_STRING ||
-                PB_LTYPE(type) == PB_LTYPE_BYTES)
-            {
-                return func(stream, iter->pos, iter->pData);
-            }
-            else
-            {
-                if (!allocate_field(stream, iter->pData, iter->pos->data_size, 1))
-                    return false;
-                
-                initialize_pointer_field(*(void**)iter->pData, iter);
-                return func(stream, iter->pos, *(void**)iter->pData);
-            }
-    
-        case PB_HTYPE_REPEATED:
-            if (wire_type == PB_WT_STRING
-                && PB_LTYPE(type) <= PB_LTYPE_LAST_PACKABLE)
-            {
-                /* Packed array, multiple items come in at once. */
-                bool status = true;
-                pb_size_t *size = (pb_size_t*)iter->pSize;
-                size_t allocated_size = *size;
-                void *pItem;
-                pb_istream_t substream;
-                
-                if (!pb_make_string_substream(stream, &substream))
-                    return false;
-                
-                while (substream.bytes_left)
-                {
-                    if ((size_t)*size + 1 > allocated_size)
-                    {
-                        /* Allocate more storage. This tries to guess the
-                         * number of remaining entries. Round the division
-                         * upwards. */
-                        allocated_size += (substream.bytes_left - 1) / iter->pos->data_size + 1;
-                        
-                        if (!allocate_field(&substream, iter->pData, iter->pos->data_size, allocated_size))
-                        {
-                            status = false;
-                            break;
-                        }
-                    }
-
-                    /* Decode the array entry */
-                    pItem = *(char**)iter->pData + iter->pos->data_size * (*size);
-                    initialize_pointer_field(pItem, iter);
-                    if (!func(&substream, iter->pos, pItem))
-                    {
-                        status = false;
-                        break;
-                    }
-                    
-                    if (*size == PB_SIZE_MAX)
-                    {
-#ifndef PB_NO_ERRMSG
-                        stream->errmsg = "too many array entries";
-#endif
-                        status = false;
-                        break;
-                    }
-                    
-                    (*size)++;
-                }
-                if (!pb_close_string_substream(stream, &substream))
-                    return false;
-                
-                return status;
-            }
-            else
-            {
-                /* Normal repeated field, i.e. only one item at a time. */
-                pb_size_t *size = (pb_size_t*)iter->pSize;
-                void *pItem;
-                
-                if (*size == PB_SIZE_MAX)
-                    PB_RETURN_ERROR(stream, "too many array entries");
-                
-                (*size)++;
-                if (!allocate_field(stream, iter->pData, iter->pos->data_size, *size))
-                    return false;
-            
-                pItem = *(char**)iter->pData + iter->pos->data_size * (*size - 1);
-                initialize_pointer_field(pItem, iter);
-                return func(stream, iter->pos, pItem);
-            }
-
-        default:
-            PB_RETURN_ERROR(stream, "invalid field type");
-    }
-#endif
-}
-
-static bool checkreturn decode_callback_field(pb_istream_t *stream, pb_wire_type_t wire_type, pb_field_iter_t *iter)
-{
-    pb_callback_t *pCallback = (pb_callback_t*)iter->pData;
-#ifdef PB_OLD_CALLBACK_STYLE
-    void *arg;
-#else
-    void **arg;
-#endif
-    
-    if (pCallback == NULL || pCallback->funcs.decode == NULL)
-        return pb_skip_field(stream, wire_type);
-
-#ifdef PB_OLD_CALLBACK_STYLE
-    arg = pCallback->arg;
-#else
-    arg = &(pCallback->arg);
-#endif
-    
-    if (wire_type == PB_WT_STRING)
-    {
-        pb_istream_t substream;
-        
-        if (!pb_make_string_substream(stream, &substream))
-            return false;
-        
-        do
-        {
-            if (!pCallback->funcs.decode(&substream, iter->pos, arg))
-                PB_RETURN_ERROR(stream, "callback failed");
-        } while (substream.bytes_left);
-        
-        if (!pb_close_string_substream(stream, &substream))
-            return false;
-
-        return true;
-    }
-    else
-    {
-        /* Copy the single scalar value to stack.
-         * This is required so that we can limit the stream length,
-         * which in turn allows to use same callback for packed and
-         * not-packed fields. */
-        pb_istream_t substream;
-        pb_byte_t buffer[10];
-        size_t size = sizeof(buffer);
-        
-        if (!read_raw_value(stream, wire_type, buffer, &size))
-            return false;
-        substream = pb_istream_from_buffer(buffer, size);
-        
-        return pCallback->funcs.decode(&substream, iter->pos, arg);
-    }
-}
-
-static bool checkreturn decode_field(pb_istream_t *stream, pb_wire_type_t wire_type, pb_field_iter_t *iter)
-{
-#ifdef PB_ENABLE_MALLOC
-    /* When decoding an oneof field, check if there is old data that must be
-     * released first. */
-    if (PB_HTYPE(iter->pos->type) == PB_HTYPE_ONEOF)
-    {
-        if (!pb_release_union_field(stream, iter))
-            return false;
-    }
-#endif
-
-    switch (PB_ATYPE(iter->pos->type))
-    {
-        case PB_ATYPE_STATIC:
-            return decode_static_field(stream, wire_type, iter);
-        
-        case PB_ATYPE_POINTER:
-            return decode_pointer_field(stream, wire_type, iter);
-        
-        case PB_ATYPE_CALLBACK:
-            return decode_callback_field(stream, wire_type, iter);
-        
-        default:
-            PB_RETURN_ERROR(stream, "invalid field type");
-    }
-}
-
-static void iter_from_extension(pb_field_iter_t *iter, pb_extension_t *extension)
-{
-    /* Fake a field iterator for the extension field.
-     * It is not actually safe to advance this iterator, but decode_field
-     * will not even try to. */
-    const pb_field_t *field = (const pb_field_t*)extension->type->arg;
-    (void)pb_field_iter_begin(iter, field, extension->dest);
-    iter->pData = extension->dest;
-    iter->pSize = &extension->found;
-    
-    if (PB_ATYPE(field->type) == PB_ATYPE_POINTER)
-    {
-        /* For pointer extensions, the pointer is stored directly
-         * in the extension structure. This avoids having an extra
-         * indirection. */
-        iter->pData = &extension->dest;
-    }
-}
-
-/* Default handler for extension fields. Expects a pb_field_t structure
- * in extension->type->arg. */
-static bool checkreturn default_extension_decoder(pb_istream_t *stream,
-    pb_extension_t *extension, uint32_t tag, pb_wire_type_t wire_type)
-{
-    const pb_field_t *field = (const pb_field_t*)extension->type->arg;
-    pb_field_iter_t iter;
-    
-    if (field->tag != tag)
-        return true;
-    
-    iter_from_extension(&iter, extension);
-    extension->found = true;
-    return decode_field(stream, wire_type, &iter);
-}
-
-/* Try to decode an unknown field as an extension field. Tries each extension
- * decoder in turn, until one of them handles the field or loop ends. */
-static bool checkreturn decode_extension(pb_istream_t *stream,
-    uint32_t tag, pb_wire_type_t wire_type, pb_field_iter_t *iter)
-{
-    pb_extension_t *extension = *(pb_extension_t* const *)iter->pData;
-    size_t pos = stream->bytes_left;
-    
-    while (extension != NULL && pos == stream->bytes_left)
-    {
-        bool status;
-        if (extension->type->decode)
-            status = extension->type->decode(stream, extension, tag, wire_type);
-        else
-            status = default_extension_decoder(stream, extension, tag, wire_type);
-
-        if (!status)
-            return false;
-        
-        extension = extension->next;
-    }
-    
-    return true;
-}
-
-/* Step through the iterator until an extension field is found or until all
- * entries have been checked. There can be only one extension field per
- * message. Returns false if no extension field is found. */
-static bool checkreturn find_extension_field(pb_field_iter_t *iter)
-{
-    const pb_field_t *start = iter->pos;
-    
-    do {
-        if (PB_LTYPE(iter->pos->type) == PB_LTYPE_EXTENSION)
-            return true;
-        (void)pb_field_iter_next(iter);
-    } while (iter->pos != start);
-    
-    return false;
-}
-
-/* Initialize message fields to default values, recursively */
-static void pb_field_set_to_default(pb_field_iter_t *iter)
-{
-    pb_type_t type;
-    type = iter->pos->type;
-    
-    if (PB_LTYPE(type) == PB_LTYPE_EXTENSION)
-    {
-        pb_extension_t *ext = *(pb_extension_t* const *)iter->pData;
-        while (ext != NULL)
-        {
-            pb_field_iter_t ext_iter;
-            ext->found = false;
-            iter_from_extension(&ext_iter, ext);
-            pb_field_set_to_default(&ext_iter);
-            ext = ext->next;
-        }
-    }
-    else if (PB_ATYPE(type) == PB_ATYPE_STATIC)
-    {
-        bool init_data = true;
-        if (PB_HTYPE(type) == PB_HTYPE_OPTIONAL && iter->pSize != iter->pData)
-        {
-            /* Set has_field to false. Still initialize the optional field
-             * itself also. */
-            *(bool*)iter->pSize = false;
-        }
-        else if (PB_HTYPE(type) == PB_HTYPE_REPEATED ||
-                 PB_HTYPE(type) == PB_HTYPE_ONEOF)
-        {
-            /* REPEATED: Set array count to 0, no need to initialize contents.
-               ONEOF: Set which_field to 0. */
-            *(pb_size_t*)iter->pSize = 0;
-            init_data = false;
-        }
-
-        if (init_data)
-        {
-            if (PB_LTYPE(iter->pos->type) == PB_LTYPE_SUBMESSAGE)
-            {
-                /* Initialize submessage to defaults */
-                pb_message_set_to_defaults((const pb_field_t *) iter->pos->ptr, iter->pData);
-            }
-            else if (iter->pos->ptr != NULL)
-            {
-                /* Initialize to default value */
-                memcpy(iter->pData, iter->pos->ptr, iter->pos->data_size);
-            }
-            else
-            {
-                /* Initialize to zeros */
-                memset(iter->pData, 0, iter->pos->data_size);
-            }
-        }
-    }
-    else if (PB_ATYPE(type) == PB_ATYPE_POINTER)
-    {
-        /* Initialize the pointer to NULL. */
-        *(void**)iter->pData = NULL;
-        
-        /* Initialize array count to 0. */
-        if (PB_HTYPE(type) == PB_HTYPE_REPEATED ||
-            PB_HTYPE(type) == PB_HTYPE_ONEOF)
-        {
-            *(pb_size_t*)iter->pSize = 0;
-        }
-    }
-    else if (PB_ATYPE(type) == PB_ATYPE_CALLBACK)
-    {
-        /* Don't overwrite callback */
-    }
-}
-
-static void pb_message_set_to_defaults(const pb_field_t fields[], void *dest_struct)
-{
-    pb_field_iter_t iter;
-
-    if (!pb_field_iter_begin(&iter, fields, dest_struct))
-        return; /* Empty message type */
-    
-    do
-    {
-        pb_field_set_to_default(&iter);
-    } while (pb_field_iter_next(&iter));
-}
-
-/*********************
- * Decode all fields *
- *********************/
-
-bool checkreturn pb_decode_noinit(pb_istream_t *stream, const pb_field_t fields[], void *dest_struct)
-{
-    uint32_t fields_seen[(PB_MAX_REQUIRED_FIELDS + 31) / 32] = {0, 0};
-    const uint32_t allbits = ~(uint32_t)0;
-    uint32_t extension_range_start = 0;
-    pb_field_iter_t iter;
-
-    /* 'fixed_count_field' and 'fixed_count_size' track position of a repeated fixed
-     * count field. This can only handle _one_ repeated fixed count field that
-     * is unpacked and unordered among other (non repeated fixed count) fields.
-     */
-    const pb_field_t *fixed_count_field = NULL;
-    pb_size_t fixed_count_size = 0;
-
-    /* Return value ignored, as empty message types will be correctly handled by
-     * pb_field_iter_find() anyway. */
-    (void)pb_field_iter_begin(&iter, fields, dest_struct);
-
-    while (stream->bytes_left)
-    {
-        uint32_t tag;
-        pb_wire_type_t wire_type;
-        bool eof;
-
-        if (!pb_decode_tag(stream, &wire_type, &tag, &eof))
-        {
-            if (eof)
-                break;
-            else
-                return false;
-        }
-
-        if (!pb_field_iter_find(&iter, tag))
-        {
-            /* No match found, check if it matches an extension. */
-            if (tag >= extension_range_start)
-            {
-                if (!find_extension_field(&iter))
-                    extension_range_start = (uint32_t)-1;
-                else
-                    extension_range_start = iter.pos->tag;
-
-                if (tag >= extension_range_start)
-                {
-                    size_t pos = stream->bytes_left;
-
-                    if (!decode_extension(stream, tag, wire_type, &iter))
-                        return false;
-
-                    if (pos != stream->bytes_left)
-                    {
-                        /* The field was handled */
-                        continue;
-                    }
-                }
-            }
-
-            /* No match found, skip data */
-            if (!pb_skip_field(stream, wire_type))
-                return false;
-            continue;
-        }
-
-        /* If a repeated fixed count field was found, get size from
-         * 'fixed_count_field' as there is no counter contained in the struct.
-         */
-        if (PB_HTYPE(iter.pos->type) == PB_HTYPE_REPEATED
-            && iter.pSize == iter.pData)
-        {
-            if (fixed_count_field != iter.pos) {
-                /* If the new fixed count field does not match the previous one,
-                 * check that the previous one is NULL or that it finished
-                 * receiving all the expected data.
-                 */
-                if (fixed_count_field != NULL &&
-                    fixed_count_size != fixed_count_field->array_size)
-                {
-                    PB_RETURN_ERROR(stream, "wrong size for fixed count field");
-                }
-
-                fixed_count_field = iter.pos;
-                fixed_count_size = 0;
-            }
-
-            iter.pSize = &fixed_count_size;
-        }
-
-        if (PB_HTYPE(iter.pos->type) == PB_HTYPE_REQUIRED
-            && iter.required_field_index < PB_MAX_REQUIRED_FIELDS)
-        {
-            uint32_t tmp = ((uint32_t)1 << (iter.required_field_index & 31));
-            fields_seen[iter.required_field_index >> 5] |= tmp;
-        }
-
-        if (!decode_field(stream, wire_type, &iter))
-            return false;
-    }
-
-    /* Check that all elements of the last decoded fixed count field were present. */
-    if (fixed_count_field != NULL &&
-        fixed_count_size != fixed_count_field->array_size)
-    {
-        PB_RETURN_ERROR(stream, "wrong size for fixed count field");
-    }
-
-    /* Check that all required fields were present. */
-    {
-        /* First figure out the number of required fields by
-         * seeking to the end of the field array. Usually we
-         * are already close to end after decoding.
-         */
-        unsigned req_field_count;
-        pb_type_t last_type;
-        unsigned i;
-        do {
-            req_field_count = iter.required_field_index;
-            last_type = iter.pos->type;
-        } while (pb_field_iter_next(&iter));
-        
-        /* Fixup if last field was also required. */
-        if (PB_HTYPE(last_type) == PB_HTYPE_REQUIRED && iter.pos->tag != 0)
-            req_field_count++;
-        
-        if (req_field_count > PB_MAX_REQUIRED_FIELDS)
-            req_field_count = PB_MAX_REQUIRED_FIELDS;
-
-        if (req_field_count > 0)
-        {
-            /* Check the whole words */
-            for (i = 0; i < (req_field_count >> 5); i++)
-            {
-                if (fields_seen[i] != allbits)
-                    PB_RETURN_ERROR(stream, "missing required field");
-            }
-            
-            /* Check the remaining bits (if any) */
-            if ((req_field_count & 31) != 0)
-            {
-                if (fields_seen[req_field_count >> 5] !=
-                    (allbits >> (32 - (req_field_count & 31))))
-                {
-                    PB_RETURN_ERROR(stream, "missing required field");
-                }
-            }
-        }
-    }
-    
-    return true;
-}
-
-bool checkreturn pb_decode(pb_istream_t *stream, const pb_field_t fields[], void *dest_struct)
-{
-    bool status;
-    pb_message_set_to_defaults(fields, dest_struct);
-    status = pb_decode_noinit(stream, fields, dest_struct);
-    
-#ifdef PB_ENABLE_MALLOC
-    if (!status)
-        pb_release(fields, dest_struct);
-#endif
-    
-    return status;
-}
-
-bool pb_decode_delimited_noinit(pb_istream_t *stream, const pb_field_t fields[], void *dest_struct)
-{
-    pb_istream_t substream;
-    bool status;
-
-    if (!pb_make_string_substream(stream, &substream))
-        return false;
-
-    status = pb_decode_noinit(&substream, fields, dest_struct);
-
-    if (!pb_close_string_substream(stream, &substream))
-        return false;
-    return status;
-}
-
-bool pb_decode_delimited(pb_istream_t *stream, const pb_field_t fields[], void *dest_struct)
-{
-    pb_istream_t substream;
-    bool status;
-    
-    if (!pb_make_string_substream(stream, &substream))
-        return false;
-    
-    status = pb_decode(&substream, fields, dest_struct);
-
-    if (!pb_close_string_substream(stream, &substream))
-        return false;
-    return status;
-}
-
-bool pb_decode_nullterminated(pb_istream_t *stream, const pb_field_t fields[], void *dest_struct)
-{
-    /* This behaviour will be separated in nanopb-0.4.0, see issue #278. */
-    return pb_decode(stream, fields, dest_struct);
-}
-
-#ifdef PB_ENABLE_MALLOC
-/* Given an oneof field, if there has already been a field inside this oneof,
- * release it before overwriting with a different one. */
-static bool pb_release_union_field(pb_istream_t *stream, pb_field_iter_t *iter)
-{
-    pb_size_t old_tag = *(pb_size_t*)iter->pSize; /* Previous which_ value */
-    pb_size_t new_tag = iter->pos->tag; /* New which_ value */
-
-    if (old_tag == 0)
-        return true; /* Ok, no old data in union */
-
-    if (old_tag == new_tag)
-        return true; /* Ok, old data is of same type => merge */
-
-    /* Release old data. The find can fail if the message struct contains
-     * invalid data. */
-    if (!pb_field_iter_find(iter, old_tag))
-        PB_RETURN_ERROR(stream, "invalid union tag");
-
-    pb_release_single_field(iter);
-
-    /* Restore iterator to where it should be.
-     * This shouldn't fail unless the pb_field_t structure is corrupted. */
-    if (!pb_field_iter_find(iter, new_tag))
-        PB_RETURN_ERROR(stream, "iterator error");
-    
-    return true;
-}
-
-static void pb_release_single_field(const pb_field_iter_t *iter)
-{
-    pb_type_t type;
-    type = iter->pos->type;
-
-    if (PB_HTYPE(type) == PB_HTYPE_ONEOF)
-    {
-        if (*(pb_size_t*)iter->pSize != iter->pos->tag)
-            return; /* This is not the current field in the union */
-    }
-
-    /* Release anything contained inside an extension or submsg.
-     * This has to be done even if the submsg itself is statically
-     * allocated. */
-    if (PB_LTYPE(type) == PB_LTYPE_EXTENSION)
-    {
-        /* Release fields from all extensions in the linked list */
-        pb_extension_t *ext = *(pb_extension_t**)iter->pData;
-        while (ext != NULL)
-        {
-            pb_field_iter_t ext_iter;
-            iter_from_extension(&ext_iter, ext);
-            pb_release_single_field(&ext_iter);
-            ext = ext->next;
-        }
-    }
-    else if (PB_LTYPE(type) == PB_LTYPE_SUBMESSAGE && PB_ATYPE(type) != PB_ATYPE_CALLBACK)
-    {
-        /* Release fields in submessage or submsg array */
-        void *pItem = iter->pData;
-        pb_size_t count = 1;
-        
-        if (PB_ATYPE(type) == PB_ATYPE_POINTER)
-        {
-            pItem = *(void**)iter->pData;
-        }
-        
-        if (PB_HTYPE(type) == PB_HTYPE_REPEATED)
-        {
-            if (PB_ATYPE(type) == PB_ATYPE_STATIC && iter->pSize == iter->pData) {
-                /* No _count field so use size of the array */
-                count = iter->pos->array_size;
-            } else {
-                count = *(pb_size_t*)iter->pSize;
-            }
-
-            if (PB_ATYPE(type) == PB_ATYPE_STATIC && count > iter->pos->array_size)
-            {
-                /* Protect against corrupted _count fields */
-                count = iter->pos->array_size;
-            }
-        }
-        
-        if (pItem)
-        {
-            while (count--)
-            {
-                pb_release((const pb_field_t*)iter->pos->ptr, pItem);
-                pItem = (char*)pItem + iter->pos->data_size;
-            }
-        }
-    }
-    
-    if (PB_ATYPE(type) == PB_ATYPE_POINTER)
-    {
-        if (PB_HTYPE(type) == PB_HTYPE_REPEATED &&
-            (PB_LTYPE(type) == PB_LTYPE_STRING ||
-             PB_LTYPE(type) == PB_LTYPE_BYTES))
-        {
-            /* Release entries in repeated string or bytes array */
-            void **pItem = *(void***)iter->pData;
-            pb_size_t count = *(pb_size_t*)iter->pSize;
-            while (count--)
-            {
-                pb_free(*pItem);
-                *pItem++ = NULL;
-            }
-        }
-        
-        if (PB_HTYPE(type) == PB_HTYPE_REPEATED)
-        {
-            /* We are going to release the array, so set the size to 0 */
-            *(pb_size_t*)iter->pSize = 0;
-        }
-        
-        /* Release main item */
-        pb_free(*(void**)iter->pData);
-        *(void**)iter->pData = NULL;
-    }
-}
-
-void pb_release(const pb_field_t fields[], void *dest_struct)
-{
-    pb_field_iter_t iter;
-    
-    if (!dest_struct)
-        return; /* Ignore NULL pointers, similar to free() */
-
-    if (!pb_field_iter_begin(&iter, fields, dest_struct))
-        return; /* Empty message type */
-    
-    do
-    {
-        pb_release_single_field(&iter);
-    } while (pb_field_iter_next(&iter));
-}
-#endif
-
-/* Field decoders */
-
-bool pb_decode_svarint(pb_istream_t *stream, pb_int64_t *dest)
-{
-    pb_uint64_t value;
-    if (!pb_decode_varint(stream, &value))
-        return false;
-    
-    if (value & 1)
-        *dest = (pb_int64_t)(~(value >> 1));
-    else
-        *dest = (pb_int64_t)(value >> 1);
-    
-    return true;
-}
-
-bool pb_decode_fixed32(pb_istream_t *stream, void *dest)
-{
-    union {
-        uint32_t fixed32;
-        pb_byte_t bytes[4];
-    } u;
-
-    if (!pb_read(stream, u.bytes, 4))
-        return false;
-
-#if defined(__BYTE_ORDER) && __BYTE_ORDER == __LITTLE_ENDIAN && CHAR_BIT == 8
-    /* fast path - if we know that we're on little endian, assign directly */
-    *(uint32_t*)dest = u.fixed32;
-#else
-    *(uint32_t*)dest = ((uint32_t)u.bytes[0] << 0) |
-                       ((uint32_t)u.bytes[1] << 8) |
-                       ((uint32_t)u.bytes[2] << 16) |
-                       ((uint32_t)u.bytes[3] << 24);
-#endif
-    return true;
-}
-
-#ifndef PB_WITHOUT_64BIT
-bool pb_decode_fixed64(pb_istream_t *stream, void *dest)
-{
-    union {
-        uint64_t fixed64;
-        pb_byte_t bytes[8];
-    } u;
-
-    if (!pb_read(stream, u.bytes, 8))
-        return false;
-
-#if defined(__BYTE_ORDER) && __BYTE_ORDER == __LITTLE_ENDIAN && CHAR_BIT == 8
-    /* fast path - if we know that we're on little endian, assign directly */
-    *(uint64_t*)dest = u.fixed64;
-#else
-    *(uint64_t*)dest = ((uint64_t)u.bytes[0] << 0) |
-                       ((uint64_t)u.bytes[1] << 8) |
-                       ((uint64_t)u.bytes[2] << 16) |
-                       ((uint64_t)u.bytes[3] << 24) |
-                       ((uint64_t)u.bytes[4] << 32) |
-                       ((uint64_t)u.bytes[5] << 40) |
-                       ((uint64_t)u.bytes[6] << 48) |
-                       ((uint64_t)u.bytes[7] << 56);
-#endif
-    return true;
-}
-#endif
-
-static bool checkreturn pb_dec_varint(pb_istream_t *stream, const pb_field_t *field, void *dest)
-{
-    pb_uint64_t value;
-    pb_int64_t svalue;
-    pb_int64_t clamped;
-    if (!pb_decode_varint(stream, &value))
-        return false;
-    
-    /* See issue 97: Google's C++ protobuf allows negative varint values to
-     * be cast as int32_t, instead of the int64_t that should be used when
-     * encoding. Previous nanopb versions had a bug in encoding. In order to
-     * not break decoding of such messages, we cast <=32 bit fields to
-     * int32_t first to get the sign correct.
-     */
-    if (field->data_size == sizeof(pb_int64_t))
-        svalue = (pb_int64_t)value;
-    else
-        svalue = (int32_t)value;
-
-    /* Cast to the proper field size, while checking for overflows */
-    if (field->data_size == sizeof(pb_int64_t))
-        clamped = *(pb_int64_t*)dest = svalue;
-    else if (field->data_size == sizeof(int32_t))
-        clamped = *(int32_t*)dest = (int32_t)svalue;
-    else if (field->data_size == sizeof(int_least16_t))
-        clamped = *(int_least16_t*)dest = (int_least16_t)svalue;
-    else if (field->data_size == sizeof(int_least8_t))
-        clamped = *(int_least8_t*)dest = (int_least8_t)svalue;
-    else
-        PB_RETURN_ERROR(stream, "invalid data_size");
-
-    if (clamped != svalue)
-        PB_RETURN_ERROR(stream, "integer too large");
-    
-    return true;
-}
-
-static bool checkreturn pb_dec_uvarint(pb_istream_t *stream, const pb_field_t *field, void *dest)
-{
-    pb_uint64_t value, clamped;
-    if (!pb_decode_varint(stream, &value))
-        return false;
-    
-    /* Cast to the proper field size, while checking for overflows */
-    if (field->data_size == sizeof(pb_uint64_t))
-        clamped = *(pb_uint64_t*)dest = value;
-    else if (field->data_size == sizeof(uint32_t))
-        clamped = *(uint32_t*)dest = (uint32_t)value;
-    else if (field->data_size == sizeof(uint_least16_t))
-        clamped = *(uint_least16_t*)dest = (uint_least16_t)value;
-    else if (field->data_size == sizeof(uint_least8_t))
-        clamped = *(uint_least8_t*)dest = (uint_least8_t)value;
-    else
-        PB_RETURN_ERROR(stream, "invalid data_size");
-    
-    if (clamped != value)
-        PB_RETURN_ERROR(stream, "integer too large");
-
-    return true;
-}
-
-static bool checkreturn pb_dec_svarint(pb_istream_t *stream, const pb_field_t *field, void *dest)
-{
-    pb_int64_t value, clamped;
-    if (!pb_decode_svarint(stream, &value))
-        return false;
-    
-    /* Cast to the proper field size, while checking for overflows */
-    if (field->data_size == sizeof(pb_int64_t))
-        clamped = *(pb_int64_t*)dest = value;
-    else if (field->data_size == sizeof(int32_t))
-        clamped = *(int32_t*)dest = (int32_t)value;
-    else if (field->data_size == sizeof(int_least16_t))
-        clamped = *(int_least16_t*)dest = (int_least16_t)value;
-    else if (field->data_size == sizeof(int_least8_t))
-        clamped = *(int_least8_t*)dest = (int_least8_t)value;
-    else
-        PB_RETURN_ERROR(stream, "invalid data_size");
-
-    if (clamped != value)
-        PB_RETURN_ERROR(stream, "integer too large");
-    
-    return true;
-}
-
-static bool checkreturn pb_dec_fixed32(pb_istream_t *stream, const pb_field_t *field, void *dest)
-{
-    PB_UNUSED(field);
-    return pb_decode_fixed32(stream, dest);
-}
-
-static bool checkreturn pb_dec_fixed64(pb_istream_t *stream, const pb_field_t *field, void *dest)
-{
-    PB_UNUSED(field);
-#ifndef PB_WITHOUT_64BIT
-    return pb_decode_fixed64(stream, dest);
-#else
-    PB_UNUSED(dest);
-    PB_RETURN_ERROR(stream, "no 64bit support");
-#endif
-}
-
-static bool checkreturn pb_dec_bytes(pb_istream_t *stream, const pb_field_t *field, void *dest)
-{
-    uint32_t size;
-    size_t alloc_size;
-    pb_bytes_array_t *bdest;
-    
-    if (!pb_decode_varint32(stream, &size))
-        return false;
-    
-    if (size > PB_SIZE_MAX)
-        PB_RETURN_ERROR(stream, "bytes overflow");
-    
-    alloc_size = PB_BYTES_ARRAY_T_ALLOCSIZE(size);
-    if (size > alloc_size)
-        PB_RETURN_ERROR(stream, "size too large");
-    
-    if (PB_ATYPE(field->type) == PB_ATYPE_POINTER)
-    {
-#ifndef PB_ENABLE_MALLOC
-        PB_RETURN_ERROR(stream, "no malloc support");
-#else
-        if (!allocate_field(stream, dest, alloc_size, 1))
-            return false;
-        bdest = *(pb_bytes_array_t**)dest;
-#endif
-    }
-    else
-    {
-        if (alloc_size > field->data_size)
-            PB_RETURN_ERROR(stream, "bytes overflow");
-        bdest = (pb_bytes_array_t*)dest;
-    }
-
-    bdest->size = (pb_size_t)size;
-    return pb_read(stream, bdest->bytes, size);
-}
-
-static bool checkreturn pb_dec_string(pb_istream_t *stream, const pb_field_t *field, void *dest)
-{
-    uint32_t size;
-    size_t alloc_size;
-    bool status;
-    if (!pb_decode_varint32(stream, &size))
-        return false;
-    
-    /* Space for null terminator */
-    alloc_size = size + 1;
-    
-    if (alloc_size < size)
-        PB_RETURN_ERROR(stream, "size too large");
-    
-    if (PB_ATYPE(field->type) == PB_ATYPE_POINTER)
-    {
-#ifndef PB_ENABLE_MALLOC
-        PB_RETURN_ERROR(stream, "no malloc support");
-#else
-        if (!allocate_field(stream, dest, alloc_size, 1))
-            return false;
-        dest = *(void**)dest;
-#endif
-    }
-    else
-    {
-        if (alloc_size > field->data_size)
-            PB_RETURN_ERROR(stream, "string overflow");
-    }
-    
-    status = pb_read(stream, (pb_byte_t*)dest, size);
-    *((pb_byte_t*)dest + size) = 0;
-    return status;
-}
-
-static bool checkreturn pb_dec_submessage(pb_istream_t *stream, const pb_field_t *field, void *dest)
-{
-    bool status;
-    pb_istream_t substream;
-    const pb_field_t* submsg_fields = (const pb_field_t*)field->ptr;
-    
-    if (!pb_make_string_substream(stream, &substream))
-        return false;
-    
-    if (field->ptr == NULL)
-        PB_RETURN_ERROR(stream, "invalid field descriptor");
-    
-    /* New array entries need to be initialized, while required and optional
-     * submessages have already been initialized in the top-level pb_decode. */
-    if (PB_HTYPE(field->type) == PB_HTYPE_REPEATED)
-        status = pb_decode(&substream, submsg_fields, dest);
-    else
-        status = pb_decode_noinit(&substream, submsg_fields, dest);
-    
-    if (!pb_close_string_substream(stream, &substream))
-        return false;
-    return status;
-}
-
-static bool checkreturn pb_dec_fixed_length_bytes(pb_istream_t *stream, const pb_field_t *field, void *dest)
-{
-    uint32_t size;
-
-    if (!pb_decode_varint32(stream, &size))
-        return false;
-
-    if (size > PB_SIZE_MAX)
-        PB_RETURN_ERROR(stream, "bytes overflow");
-
-    if (size == 0)
-    {
-        /* As a special case, treat empty bytes string as all zeros for fixed_length_bytes. */
-        memset(dest, 0, field->data_size);
-        return true;
-    }
-
-    if (size != field->data_size)
-        PB_RETURN_ERROR(stream, "incorrect fixed length bytes size");
-
-    return pb_read(stream, (pb_byte_t*)dest, field->data_size);
-}
diff --git a/src/lib/nanopb/pb_encode.cc b/src/lib/nanopb/pb_encode.cc
deleted file mode 100644
index f37ceec..0000000
--- a/src/lib/nanopb/pb_encode.cc
+++ /dev/null
@@ -1,893 +0,0 @@
-/* pb_encode.c -- encode a protobuf using minimal resources
- *
- * 2011 Petteri Aimonen <jpa@kapsi.fi>
- */
-
-#include "pb.h"
-#include "pb_encode.h"
-#include "pb_common.h"
-
-/* Use the GCC warn_unused_result attribute to check that all return values
- * are propagated correctly. On other compilers and gcc before 3.4.0 just
- * ignore the annotation.
- */
-#if !defined(__GNUC__) || ( __GNUC__ < 3) || (__GNUC__ == 3 && __GNUC_MINOR__ < 4)
-    #define checkreturn
-#else
-    #define checkreturn __attribute__((warn_unused_result))
-#endif
-
-/**************************************
- * Declarations internal to this file *
- **************************************/
-typedef bool (*pb_encoder_t)(pb_ostream_t *stream, const pb_field_t *field, const void *src) checkreturn;
-
-static bool checkreturn buf_write(pb_ostream_t *stream, const pb_byte_t *buf, size_t count);
-static bool checkreturn encode_array(pb_ostream_t *stream, const pb_field_t *field, const void *pData, size_t count, pb_encoder_t func);
-static bool checkreturn encode_field(pb_ostream_t *stream, const pb_field_t *field, const void *pData);
-static bool checkreturn default_extension_encoder(pb_ostream_t *stream, const pb_extension_t *extension);
-static bool checkreturn encode_extension_field(pb_ostream_t *stream, const pb_field_t *field, const void *pData);
-static void *pb_const_cast(const void *p);
-static bool checkreturn pb_encode_varint_32(pb_ostream_t *stream, uint32_t low, uint32_t high);
-static bool checkreturn pb_enc_varint(pb_ostream_t *stream, const pb_field_t *field, const void *src);
-static bool checkreturn pb_enc_uvarint(pb_ostream_t *stream, const pb_field_t *field, const void *src);
-static bool checkreturn pb_enc_svarint(pb_ostream_t *stream, const pb_field_t *field, const void *src);
-static bool checkreturn pb_enc_fixed32(pb_ostream_t *stream, const pb_field_t *field, const void *src);
-static bool checkreturn pb_enc_fixed64(pb_ostream_t *stream, const pb_field_t *field, const void *src);
-static bool checkreturn pb_enc_bytes(pb_ostream_t *stream, const pb_field_t *field, const void *src);
-static bool checkreturn pb_enc_string(pb_ostream_t *stream, const pb_field_t *field, const void *src);
-static bool checkreturn pb_enc_submessage(pb_ostream_t *stream, const pb_field_t *field, const void *src);
-static bool checkreturn pb_enc_fixed_length_bytes(pb_ostream_t *stream, const pb_field_t *field, const void *src);
-
-#ifdef PB_WITHOUT_64BIT
-#define pb_int64_t int32_t
-#define pb_uint64_t uint32_t
-#else
-#define pb_int64_t int64_t
-#define pb_uint64_t uint64_t
-#endif
-
-/* --- Function pointers to field encoders ---
- * Order in the array must match pb_action_t LTYPE numbering.
- */
-static const pb_encoder_t PB_ENCODERS[PB_LTYPES_COUNT] = {
-    &pb_enc_varint,
-    &pb_enc_uvarint,
-    &pb_enc_svarint,
-    &pb_enc_fixed32,
-    &pb_enc_fixed64,
-    
-    &pb_enc_bytes,
-    &pb_enc_string,
-    &pb_enc_submessage,
-    NULL, /* extensions */
-    &pb_enc_fixed_length_bytes
-};
-
-/*******************************
- * pb_ostream_t implementation *
- *******************************/
-
-static bool checkreturn buf_write(pb_ostream_t *stream, const pb_byte_t *buf, size_t count)
-{
-    size_t i;
-    pb_byte_t *dest = (pb_byte_t*)stream->state;
-    stream->state = dest + count;
-    
-    for (i = 0; i < count; i++)
-        dest[i] = buf[i];
-    
-    return true;
-}
-
-pb_ostream_t pb_ostream_from_buffer(pb_byte_t *buf, size_t bufsize)
-{
-    pb_ostream_t stream;
-#ifdef PB_BUFFER_ONLY
-    stream.callback = (void*)1; /* Just a marker value */
-#else
-    stream.callback = &buf_write;
-#endif
-    stream.state = buf;
-    stream.max_size = bufsize;
-    stream.bytes_written = 0;
-#ifndef PB_NO_ERRMSG
-    stream.errmsg = NULL;
-#endif
-    return stream;
-}
-
-bool checkreturn pb_write(pb_ostream_t *stream, const pb_byte_t *buf, size_t count)
-{
-    if (stream->callback != NULL)
-    {
-        if (stream->bytes_written + count > stream->max_size)
-            PB_RETURN_ERROR(stream, "stream full");
-
-#ifdef PB_BUFFER_ONLY
-        if (!buf_write(stream, buf, count))
-            PB_RETURN_ERROR(stream, "io error");
-#else        
-        if (!stream->callback(stream, buf, count))
-            PB_RETURN_ERROR(stream, "io error");
-#endif
-    }
-    
-    stream->bytes_written += count;
-    return true;
-}
-
-/*************************
- * Encode a single field *
- *************************/
-
-/* Encode a static array. Handles the size calculations and possible packing. */
-static bool checkreturn encode_array(pb_ostream_t *stream, const pb_field_t *field,
-                         const void *pData, size_t count, pb_encoder_t func)
-{
-    size_t i;
-    const void *p;
-    size_t size;
-    
-    if (count == 0)
-        return true;
-
-    if (PB_ATYPE(field->type) != PB_ATYPE_POINTER && count > field->array_size)
-        PB_RETURN_ERROR(stream, "array max size exceeded");
-    
-    /* We always pack arrays if the datatype allows it. */
-    if (PB_LTYPE(field->type) <= PB_LTYPE_LAST_PACKABLE)
-    {
-        if (!pb_encode_tag(stream, PB_WT_STRING, field->tag))
-            return false;
-        
-        /* Determine the total size of packed array. */
-        if (PB_LTYPE(field->type) == PB_LTYPE_FIXED32)
-        {
-            size = 4 * count;
-        }
-        else if (PB_LTYPE(field->type) == PB_LTYPE_FIXED64)
-        {
-            size = 8 * count;
-        }
-        else
-        { 
-            pb_ostream_t sizestream = PB_OSTREAM_SIZING;
-            p = pData;
-            for (i = 0; i < count; i++)
-            {
-                if (!func(&sizestream, field, p))
-                    return false;
-                p = (const char*)p + field->data_size;
-            }
-            size = sizestream.bytes_written;
-        }
-        
-        if (!pb_encode_varint(stream, (pb_uint64_t)size))
-            return false;
-        
-        if (stream->callback == NULL)
-            return pb_write(stream, NULL, size); /* Just sizing.. */
-        
-        /* Write the data */
-        p = pData;
-        for (i = 0; i < count; i++)
-        {
-            if (!func(stream, field, p))
-                return false;
-            p = (const char*)p + field->data_size;
-        }
-    }
-    else
-    {
-        p = pData;
-        for (i = 0; i < count; i++)
-        {
-            if (!pb_encode_tag_for_field(stream, field))
-                return false;
-
-            /* Normally the data is stored directly in the array entries, but
-             * for pointer-type string and bytes fields, the array entries are
-             * actually pointers themselves also. So we have to dereference once
-             * more to get to the actual data. */
-            if (PB_ATYPE(field->type) == PB_ATYPE_POINTER &&
-                (PB_LTYPE(field->type) == PB_LTYPE_STRING ||
-                 PB_LTYPE(field->type) == PB_LTYPE_BYTES))
-            {
-                if (!func(stream, field, *(const void* const*)p))
-                    return false;
-            }
-            else
-            {
-                if (!func(stream, field, p))
-                    return false;
-            }
-            p = (const char*)p + field->data_size;
-        }
-    }
-    
-    return true;
-}
-
-/* In proto3, all fields are optional and are only encoded if their value is "non-zero".
- * This function implements the check for the zero value. */
-static bool pb_check_proto3_default_value(const pb_field_t *field, const void *pData)
-{
-    pb_type_t type = field->type;
-    const void *pSize = (const char*)pData + field->size_offset;
-
-    if (PB_HTYPE(type) == PB_HTYPE_REQUIRED)
-    {
-        /* Required proto2 fields inside proto3 submessage, pretty rare case */
-        return false;
-    }
-    else if (PB_HTYPE(type) == PB_HTYPE_REPEATED)
-    {
-        /* Repeated fields inside proto3 submessage: present if count != 0 */
-        return *(const pb_size_t*)pSize == 0;
-    }
-    else if (PB_HTYPE(type) == PB_HTYPE_ONEOF)
-    {
-        /* Oneof fields */
-        return *(const pb_size_t*)pSize == 0;
-    }
-    else if (PB_HTYPE(type) == PB_HTYPE_OPTIONAL && field->size_offset != 0)
-    {
-        /* Proto2 optional fields inside proto3 submessage */
-        return *(const bool*)pSize == false;
-    }
-
-    /* Rest is proto3 singular fields */
-
-    if (PB_ATYPE(type) == PB_ATYPE_STATIC)
-    {
-        if (PB_LTYPE(type) == PB_LTYPE_BYTES)
-        {
-            const pb_bytes_array_t *bytes = (const pb_bytes_array_t*)pData;
-            return bytes->size == 0;
-        }
-        else if (PB_LTYPE(type) == PB_LTYPE_STRING)
-        {
-            return *(const char*)pData == '\0';
-        }
-        else if (PB_LTYPE(type) == PB_LTYPE_FIXED_LENGTH_BYTES)
-        {
-            /* Fixed length bytes is only empty if its length is fixed
-             * as 0. Which would be pretty strange, but we can check
-             * it anyway. */
-            return field->data_size == 0;
-        }
-        else if (PB_LTYPE(type) == PB_LTYPE_SUBMESSAGE)
-        {
-            /* Check all fields in the submessage to find if any of them
-             * are non-zero. The comparison cannot be done byte-per-byte
-             * because the C struct may contain padding bytes that must
-             * be skipped.
-             */
-            pb_field_iter_t iter;
-            if (pb_field_iter_begin(&iter, (const pb_field_t*)field->ptr, pb_const_cast(pData)))
-            {
-                do
-                {
-                    if (!pb_check_proto3_default_value(iter.pos, iter.pData))
-                    {
-                        return false;
-                    }
-                } while (pb_field_iter_next(&iter));
-            }
-            return true;
-        }
-    }
-    
-	{
-	    /* Catch-all branch that does byte-per-byte comparison for zero value.
-	     *
-	     * This is for all pointer fields, and for static PB_LTYPE_VARINT,
-	     * UVARINT, SVARINT, FIXED32, FIXED64, EXTENSION fields, and also
-	     * callback fields. These all have integer or pointer value which
-	     * can be compared with 0.
-	     */
-	    pb_size_t i;
-	    const char *p = (const char*)pData;
-	    for (i = 0; i < field->data_size; i++)
-	    {
-	        if (p[i] != 0)
-	        {
-	            return false;
-	        }
-	    }
-
-	    return true;
-	}
-}
-
-/* Encode a field with static or pointer allocation, i.e. one whose data
- * is available to the encoder directly. */
-static bool checkreturn encode_basic_field(pb_ostream_t *stream,
-    const pb_field_t *field, const void *pData)
-{
-    pb_encoder_t func;
-    bool implicit_has;
-    const void *pSize = &implicit_has;
-    
-    func = PB_ENCODERS[PB_LTYPE(field->type)];
-    
-    if (field->size_offset)
-    {
-        /* Static optional, repeated or oneof field */
-        pSize = (const char*)pData + field->size_offset;
-    }
-    else if (PB_HTYPE(field->type) == PB_HTYPE_OPTIONAL)
-    {
-        /* Proto3 style field, optional but without explicit has_ field. */
-        implicit_has = !pb_check_proto3_default_value(field, pData);
-    }
-    else
-    {
-        /* Required field, always present */
-        implicit_has = true;
-    }
-
-    if (PB_ATYPE(field->type) == PB_ATYPE_POINTER)
-    {
-        /* pData is a pointer to the field, which contains pointer to
-         * the data. If the 2nd pointer is NULL, it is interpreted as if
-         * the has_field was false.
-         */
-        pData = *(const void* const*)pData;
-        implicit_has = (pData != NULL);
-    }
-
-    switch (PB_HTYPE(field->type))
-    {
-        case PB_HTYPE_REQUIRED:
-            if (!pData)
-                PB_RETURN_ERROR(stream, "missing required field");
-            if (!pb_encode_tag_for_field(stream, field))
-                return false;
-            if (!func(stream, field, pData))
-                return false;
-            break;
-        
-        case PB_HTYPE_OPTIONAL:
-            if (*(const bool*)pSize)
-            {
-                if (!pb_encode_tag_for_field(stream, field))
-                    return false;
-            
-                if (!func(stream, field, pData))
-                    return false;
-            }
-            break;
-        
-        case PB_HTYPE_REPEATED: {
-            pb_size_t count;
-            if (field->size_offset != 0) {
-                count = *(const pb_size_t*)pSize;
-            } else {
-                count = field->array_size;
-            }
-            if (!encode_array(stream, field, pData, count, func))
-                return false;
-            break;
-        }
-        
-        case PB_HTYPE_ONEOF:
-            if (*(const pb_size_t*)pSize == field->tag)
-            {
-                if (!pb_encode_tag_for_field(stream, field))
-                    return false;
-
-                if (!func(stream, field, pData))
-                    return false;
-            }
-            break;
-            
-        default:
-            PB_RETURN_ERROR(stream, "invalid field type");
-    }
-    
-    return true;
-}
-
-/* Encode a field with callback semantics. This means that a user function is
- * called to provide and encode the actual data. */
-static bool checkreturn encode_callback_field(pb_ostream_t *stream,
-    const pb_field_t *field, const void *pData)
-{
-    const pb_callback_t *callback = (const pb_callback_t*)pData;
-    
-#ifdef PB_OLD_CALLBACK_STYLE
-    const void *arg = callback->arg;
-#else
-    void * const *arg = &(callback->arg);
-#endif    
-    
-    if (callback->funcs.encode != NULL)
-    {
-        if (!callback->funcs.encode(stream, field, arg))
-            PB_RETURN_ERROR(stream, "callback error");
-    }
-    return true;
-}
-
-/* Encode a single field of any callback or static type. */
-static bool checkreturn encode_field(pb_ostream_t *stream,
-    const pb_field_t *field, const void *pData)
-{
-    switch (PB_ATYPE(field->type))
-    {
-        case PB_ATYPE_STATIC:
-        case PB_ATYPE_POINTER:
-            return encode_basic_field(stream, field, pData);
-        
-        case PB_ATYPE_CALLBACK:
-            return encode_callback_field(stream, field, pData);
-        
-        default:
-            PB_RETURN_ERROR(stream, "invalid field type");
-    }
-}
-
-/* Default handler for extension fields. Expects to have a pb_field_t
- * pointer in the extension->type->arg field. */
-static bool checkreturn default_extension_encoder(pb_ostream_t *stream,
-    const pb_extension_t *extension)
-{
-    const pb_field_t *field = (const pb_field_t*)extension->type->arg;
-    
-    if (PB_ATYPE(field->type) == PB_ATYPE_POINTER)
-    {
-        /* For pointer extensions, the pointer is stored directly
-         * in the extension structure. This avoids having an extra
-         * indirection. */
-        return encode_field(stream, field, &extension->dest);
-    }
-    else
-    {
-        return encode_field(stream, field, extension->dest);
-    }
-}
-
-/* Walk through all the registered extensions and give them a chance
- * to encode themselves. */
-static bool checkreturn encode_extension_field(pb_ostream_t *stream,
-    const pb_field_t *field, const void *pData)
-{
-    const pb_extension_t *extension = *(const pb_extension_t* const *)pData;
-    PB_UNUSED(field);
-    
-    while (extension)
-    {
-        bool status;
-        if (extension->type->encode)
-            status = extension->type->encode(stream, extension);
-        else
-            status = default_extension_encoder(stream, extension);
-
-        if (!status)
-            return false;
-        
-        extension = extension->next;
-    }
-    
-    return true;
-}
-
-/*********************
- * Encode all fields *
- *********************/
-
-static void *pb_const_cast(const void *p)
-{
-    /* Note: this casts away const, in order to use the common field iterator
-     * logic for both encoding and decoding. */
-    union {
-        void *p1;
-        const void *p2;
-    } t;
-    t.p2 = p;
-    return t.p1;
-}
-
-bool checkreturn pb_encode(pb_ostream_t *stream, const pb_field_t fields[], const void *src_struct)
-{
-    pb_field_iter_t iter;
-    if (!pb_field_iter_begin(&iter, fields, pb_const_cast(src_struct)))
-        return true; /* Empty message type */
-    
-    do {
-        if (PB_LTYPE(iter.pos->type) == PB_LTYPE_EXTENSION)
-        {
-            /* Special case for the extension field placeholder */
-            if (!encode_extension_field(stream, iter.pos, iter.pData))
-                return false;
-        }
-        else
-        {
-            /* Regular field */
-            if (!encode_field(stream, iter.pos, iter.pData))
-                return false;
-        }
-    } while (pb_field_iter_next(&iter));
-    
-    return true;
-}
-
-bool pb_encode_delimited(pb_ostream_t *stream, const pb_field_t fields[], const void *src_struct)
-{
-    return pb_encode_submessage(stream, fields, src_struct);
-}
-
-bool pb_encode_nullterminated(pb_ostream_t *stream, const pb_field_t fields[], const void *src_struct)
-{
-    const pb_byte_t zero = 0;
-
-    if (!pb_encode(stream, fields, src_struct))
-        return false;
-
-    return pb_write(stream, &zero, 1);
-}
-
-bool pb_get_encoded_size(size_t *size, const pb_field_t fields[], const void *src_struct)
-{
-    pb_ostream_t stream = PB_OSTREAM_SIZING;
-    
-    if (!pb_encode(&stream, fields, src_struct))
-        return false;
-    
-    *size = stream.bytes_written;
-    return true;
-}
-
-/********************
- * Helper functions *
- ********************/
-
-/* This function avoids 64-bit shifts as they are quite slow on many platforms. */
-static bool checkreturn pb_encode_varint_32(pb_ostream_t *stream, uint32_t low, uint32_t high)
-{
-    size_t i = 0;
-    pb_byte_t buffer[10];
-    pb_byte_t byte = (pb_byte_t)(low & 0x7F);
-    low >>= 7;
-
-    while (i < 4 && (low != 0 || high != 0))
-    {
-        byte |= 0x80;
-        buffer[i++] = byte;
-        byte = (pb_byte_t)(low & 0x7F);
-        low >>= 7;
-    }
-
-    if (high)
-    {
-        byte = (pb_byte_t)(byte | ((high & 0x07) << 4));
-        high >>= 3;
-
-        while (high)
-        {
-            byte |= 0x80;
-            buffer[i++] = byte;
-            byte = (pb_byte_t)(high & 0x7F);
-            high >>= 7;
-        }
-    }
-
-    buffer[i++] = byte;
-
-    return pb_write(stream, buffer, i);
-}
-
-bool checkreturn pb_encode_varint(pb_ostream_t *stream, pb_uint64_t value)
-{
-    if (value <= 0x7F)
-    {
-        /* Fast path: single byte */
-        pb_byte_t byte = (pb_byte_t)value;
-        return pb_write(stream, &byte, 1);
-    }
-    else
-    {
-#ifdef PB_WITHOUT_64BIT
-        return pb_encode_varint_32(stream, value, 0);
-#else
-        return pb_encode_varint_32(stream, (uint32_t)value, (uint32_t)(value >> 32));
-#endif
-    }
-}
-
-bool checkreturn pb_encode_svarint(pb_ostream_t *stream, pb_int64_t value)
-{
-    pb_uint64_t zigzagged;
-    if (value < 0)
-        zigzagged = ~((pb_uint64_t)value << 1);
-    else
-        zigzagged = (pb_uint64_t)value << 1;
-    
-    return pb_encode_varint(stream, zigzagged);
-}
-
-bool checkreturn pb_encode_fixed32(pb_ostream_t *stream, const void *value)
-{
-    uint32_t val = *(const uint32_t*)value;
-    pb_byte_t bytes[4];
-    bytes[0] = (pb_byte_t)(val & 0xFF);
-    bytes[1] = (pb_byte_t)((val >> 8) & 0xFF);
-    bytes[2] = (pb_byte_t)((val >> 16) & 0xFF);
-    bytes[3] = (pb_byte_t)((val >> 24) & 0xFF);
-    return pb_write(stream, bytes, 4);
-}
-
-#ifndef PB_WITHOUT_64BIT
-bool checkreturn pb_encode_fixed64(pb_ostream_t *stream, const void *value)
-{
-    uint64_t val = *(const uint64_t*)value;
-    pb_byte_t bytes[8];
-    bytes[0] = (pb_byte_t)(val & 0xFF);
-    bytes[1] = (pb_byte_t)((val >> 8) & 0xFF);
-    bytes[2] = (pb_byte_t)((val >> 16) & 0xFF);
-    bytes[3] = (pb_byte_t)((val >> 24) & 0xFF);
-    bytes[4] = (pb_byte_t)((val >> 32) & 0xFF);
-    bytes[5] = (pb_byte_t)((val >> 40) & 0xFF);
-    bytes[6] = (pb_byte_t)((val >> 48) & 0xFF);
-    bytes[7] = (pb_byte_t)((val >> 56) & 0xFF);
-    return pb_write(stream, bytes, 8);
-}
-#endif
-
-bool checkreturn pb_encode_tag(pb_ostream_t *stream, pb_wire_type_t wiretype, uint32_t field_number)
-{
-    pb_uint64_t tag = ((pb_uint64_t)field_number << 3) | wiretype;
-    return pb_encode_varint(stream, tag);
-}
-
-bool checkreturn pb_encode_tag_for_field(pb_ostream_t *stream, const pb_field_t *field)
-{
-    pb_wire_type_t wiretype;
-    switch (PB_LTYPE(field->type))
-    {
-        case PB_LTYPE_VARINT:
-        case PB_LTYPE_UVARINT:
-        case PB_LTYPE_SVARINT:
-            wiretype = PB_WT_VARINT;
-            break;
-        
-        case PB_LTYPE_FIXED32:
-            wiretype = PB_WT_32BIT;
-            break;
-        
-        case PB_LTYPE_FIXED64:
-            wiretype = PB_WT_64BIT;
-            break;
-        
-        case PB_LTYPE_BYTES:
-        case PB_LTYPE_STRING:
-        case PB_LTYPE_SUBMESSAGE:
-        case PB_LTYPE_FIXED_LENGTH_BYTES:
-            wiretype = PB_WT_STRING;
-            break;
-        
-        default:
-            PB_RETURN_ERROR(stream, "invalid field type");
-    }
-    
-    return pb_encode_tag(stream, wiretype, field->tag);
-}
-
-bool checkreturn pb_encode_string(pb_ostream_t *stream, const pb_byte_t *buffer, size_t size)
-{
-    if (!pb_encode_varint(stream, (pb_uint64_t)size))
-        return false;
-    
-    return pb_write(stream, buffer, size);
-}
-
-bool checkreturn pb_encode_submessage(pb_ostream_t *stream, const pb_field_t fields[], const void *src_struct)
-{
-    /* First calculate the message size using a non-writing substream. */
-    pb_ostream_t substream = PB_OSTREAM_SIZING;
-    size_t size;
-    bool status;
-    
-    if (!pb_encode(&substream, fields, src_struct))
-    {
-#ifndef PB_NO_ERRMSG
-        stream->errmsg = substream.errmsg;
-#endif
-        return false;
-    }
-    
-    size = substream.bytes_written;
-    
-    if (!pb_encode_varint(stream, (pb_uint64_t)size))
-        return false;
-    
-    if (stream->callback == NULL)
-        return pb_write(stream, NULL, size); /* Just sizing */
-    
-    if (stream->bytes_written + size > stream->max_size)
-        PB_RETURN_ERROR(stream, "stream full");
-        
-    /* Use a substream to verify that a callback doesn't write more than
-     * what it did the first time. */
-    substream.callback = stream->callback;
-    substream.state = stream->state;
-    substream.max_size = size;
-    substream.bytes_written = 0;
-#ifndef PB_NO_ERRMSG
-    substream.errmsg = NULL;
-#endif
-    
-    status = pb_encode(&substream, fields, src_struct);
-    
-    stream->bytes_written += substream.bytes_written;
-    stream->state = substream.state;
-#ifndef PB_NO_ERRMSG
-    stream->errmsg = substream.errmsg;
-#endif
-    
-    if (substream.bytes_written != size)
-        PB_RETURN_ERROR(stream, "submsg size changed");
-    
-    return status;
-}
-
-/* Field encoders */
-
-static bool checkreturn pb_enc_varint(pb_ostream_t *stream, const pb_field_t *field, const void *src)
-{
-    pb_int64_t value = 0;
-    
-    if (field->data_size == sizeof(int_least8_t))
-        value = *(const int_least8_t*)src;
-    else if (field->data_size == sizeof(int_least16_t))
-        value = *(const int_least16_t*)src;
-    else if (field->data_size == sizeof(int32_t))
-        value = *(const int32_t*)src;
-    else if (field->data_size == sizeof(pb_int64_t))
-        value = *(const pb_int64_t*)src;
-    else
-        PB_RETURN_ERROR(stream, "invalid data_size");
-    
-#ifdef PB_WITHOUT_64BIT
-    if (value < 0)
-        return pb_encode_varint_32(stream, (uint32_t)value, (uint32_t)-1);
-    else
-#endif
-        return pb_encode_varint(stream, (pb_uint64_t)value);
-}
-
-static bool checkreturn pb_enc_uvarint(pb_ostream_t *stream, const pb_field_t *field, const void *src)
-{
-    pb_uint64_t value = 0;
-    
-    if (field->data_size == sizeof(uint_least8_t))
-        value = *(const uint_least8_t*)src;
-    else if (field->data_size == sizeof(uint_least16_t))
-        value = *(const uint_least16_t*)src;
-    else if (field->data_size == sizeof(uint32_t))
-        value = *(const uint32_t*)src;
-    else if (field->data_size == sizeof(pb_uint64_t))
-        value = *(const pb_uint64_t*)src;
-    else
-        PB_RETURN_ERROR(stream, "invalid data_size");
-    
-    return pb_encode_varint(stream, value);
-}
-
-static bool checkreturn pb_enc_svarint(pb_ostream_t *stream, const pb_field_t *field, const void *src)
-{
-    pb_int64_t value = 0;
-    
-    if (field->data_size == sizeof(int_least8_t))
-        value = *(const int_least8_t*)src;
-    else if (field->data_size == sizeof(int_least16_t))
-        value = *(const int_least16_t*)src;
-    else if (field->data_size == sizeof(int32_t))
-        value = *(const int32_t*)src;
-    else if (field->data_size == sizeof(pb_int64_t))
-        value = *(const pb_int64_t*)src;
-    else
-        PB_RETURN_ERROR(stream, "invalid data_size");
-    
-    return pb_encode_svarint(stream, value);
-}
-
-static bool checkreturn pb_enc_fixed64(pb_ostream_t *stream, const pb_field_t *field, const void *src)
-{
-    PB_UNUSED(field);
-#ifndef PB_WITHOUT_64BIT
-    return pb_encode_fixed64(stream, src);
-#else
-    PB_UNUSED(src);
-    PB_RETURN_ERROR(stream, "no 64bit support");
-#endif
-}
-
-static bool checkreturn pb_enc_fixed32(pb_ostream_t *stream, const pb_field_t *field, const void *src)
-{
-    PB_UNUSED(field);
-    return pb_encode_fixed32(stream, src);
-}
-
-static bool checkreturn pb_enc_bytes(pb_ostream_t *stream, const pb_field_t *field, const void *src)
-{
-    const pb_bytes_array_t *bytes = NULL;
-
-    bytes = (const pb_bytes_array_t*)src;
-    
-    if (src == NULL)
-    {
-        /* Treat null pointer as an empty bytes field */
-        return pb_encode_string(stream, NULL, 0);
-    }
-    
-    if (PB_ATYPE(field->type) == PB_ATYPE_STATIC &&
-        PB_BYTES_ARRAY_T_ALLOCSIZE(bytes->size) > field->data_size)
-    {
-        PB_RETURN_ERROR(stream, "bytes size exceeded");
-    }
-    
-    return pb_encode_string(stream, bytes->bytes, bytes->size);
-}
-
-static bool checkreturn pb_enc_string(pb_ostream_t *stream, const pb_field_t *field, const void *src)
-{
-    size_t size = 0;
-    size_t max_size = field->data_size;
-    const char *p = (const char*)src;
-    
-    if (PB_ATYPE(field->type) == PB_ATYPE_POINTER)
-    {
-        max_size = (size_t)-1;
-    }
-    else
-    {
-        /* pb_dec_string() assumes string fields end with a null
-         * terminator when the type isn't PB_ATYPE_POINTER, so we
-         * shouldn't allow more than max-1 bytes to be written to
-         * allow space for the null terminator.
-         */
-        if (max_size == 0)
-            PB_RETURN_ERROR(stream, "zero-length string");
-
-        max_size -= 1;
-    }
-
-
-    if (src == NULL)
-    {
-        size = 0; /* Treat null pointer as an empty string */
-    }
-    else
-    {
-        /* strnlen() is not always available, so just use a loop */
-        while (size < max_size && *p != '\0')
-        {
-            size++;
-            p++;
-        }
-
-        if (*p != '\0')
-        {
-            PB_RETURN_ERROR(stream, "unterminated string");
-        }
-    }
-
-    return pb_encode_string(stream, (const pb_byte_t*)src, size);
-}
-
-static bool checkreturn pb_enc_submessage(pb_ostream_t *stream, const pb_field_t *field, const void *src)
-{
-    if (field->ptr == NULL)
-        PB_RETURN_ERROR(stream, "invalid field descriptor");
-    
-    return pb_encode_submessage(stream, (const pb_field_t*)field->ptr, src);
-}
-
-static bool checkreturn pb_enc_fixed_length_bytes(pb_ostream_t *stream, const pb_field_t *field, const void *src)
-{
-    return pb_encode_string(stream, (const pb_byte_t*)src, field->data_size);
-}
-