static const pb_decoder_t PB_DECODERS[PB_LTYPES_COUNT] = {
&pb_dec_varint,
&pb_dec_svarint,
- &pb_dec_fixed,
+ &pb_dec_fixed32,
+ &pb_dec_fixed64,
&pb_dec_bytes,
&pb_dec_string,
}
}
-/* Decode string length from stream and return a substream with limited length */
+/* Decode string length from stream and return a substream with limited length.
+ * Before disposing the substream, remember to copy the substream->state back
+ * to stream->state.
+ */
static bool checkreturn make_string_substream(pb_istream_t *stream, pb_istream_t *substream)
{
uint32_t size;
if (!pCallback->funcs.decode(&substream, iter->current, pCallback->arg))
return false;
}
+
+ stream->state = substream.state;
return true;
}
else
}
}
-/*********************
- * Decode all fields *
- *********************/
-
-bool checkreturn pb_decode(pb_istream_t *stream, const pb_field_t fields[], void *dest_struct)
+/* Initialize message fields to default values, recursively */
+static void pb_message_set_to_defaults(const pb_field_t fields[], void *dest_struct)
{
- uint32_t fields_seen = 0; /* Used to check for required fields */
pb_field_iterator_t iter;
- int i;
-
pb_field_init(&iter, fields, dest_struct);
/* Initialize size/has fields and apply default values */
if (iter.current->tag == 0)
continue;
+ /* Initialize the size field for optional/repeated fields to 0. */
if (PB_HTYPE(iter.current->type) == PB_HTYPE_OPTIONAL)
{
*(bool*)iter.pSize = false;
-
- /* Initialize to default value */
- if (iter.current->ptr != NULL)
- memcpy(iter.pData, iter.current->ptr, iter.current->data_size);
- else
- memset(iter.pData, 0, iter.current->data_size);
}
else if (PB_HTYPE(iter.current->type) == PB_HTYPE_ARRAY)
{
*(size_t*)iter.pSize = 0;
+ continue; /* Array is empty, no need to initialize contents */
+ }
+
+ /* Initialize field contents to default value */
+ if (PB_HTYPE(iter.current->type) == PB_HTYPE_CALLBACK)
+ {
+ continue; /* Don't overwrite callback */
+ }
+ else if (PB_LTYPE(iter.current->type) == PB_LTYPE_SUBMESSAGE)
+ {
+ pb_message_set_to_defaults(iter.current->ptr, iter.pData);
+ }
+ else if (iter.current->ptr != NULL)
+ {
+ memcpy(iter.pData, iter.current->ptr, iter.current->data_size);
}
- else if (PB_HTYPE(iter.current->type) == PB_HTYPE_REQUIRED)
+ else
{
memset(iter.pData, 0, iter.current->data_size);
}
} while (pb_field_next(&iter));
+}
+
+/*********************
+ * Decode all fields *
+ *********************/
+
+bool checkreturn pb_decode(pb_istream_t *stream, const pb_field_t fields[], void *dest_struct)
+{
+ uint32_t fields_seen = 0; /* Used to check for required fields */
+ pb_field_iterator_t iter;
+ int i;
+
+ pb_message_set_to_defaults(fields, dest_struct);
+
+ pb_field_init(&iter, fields, dest_struct);
while (stream->bytes_left)
{
return status;
}
-bool checkreturn pb_dec_fixed(pb_istream_t *stream, const pb_field_t *field, void *dest)
+bool checkreturn pb_dec_fixed32(pb_istream_t *stream, const pb_field_t *field, void *dest)
+{
+#ifdef __BIG_ENDIAN__
+ uint8_t bytes[4] = {0};
+ bool status = pb_read(stream, bytes, 4);
+ uint8_t bebytes[4] = {bytes[3], bytes[2], bytes[1], bytes[0]};
+ memcpy(dest, bebytes, 4);
+ return status;
+#else
+ return pb_read(stream, (uint8_t*)dest, 4);
+#endif
+}
+
+bool checkreturn pb_dec_fixed64(pb_istream_t *stream, const pb_field_t *field, void *dest)
{
#ifdef __BIG_ENDIAN__
uint8_t bytes[8] = {0};
- bool status = pb_read(stream, bytes, field->data_size);
+ bool status = pb_read(stream, bytes, 8);
uint8_t bebytes[8] = {bytes[7], bytes[6], bytes[5], bytes[4],
bytes[3], bytes[2], bytes[1], bytes[0]};
- endian_copy(dest, lebytes, field->data_size, 8);
+ memcpy(dest, bebytes, 8);
return status;
#else
- return pb_read(stream, (uint8_t*)dest, field->data_size);
+ return pb_read(stream, (uint8_t*)dest, 8);
#endif
}
bool checkreturn pb_dec_submessage(pb_istream_t *stream, const pb_field_t *field, void *dest)
{
+ bool status;
pb_istream_t substream;
if (!make_string_substream(stream, &substream))
if (field->ptr == NULL)
return false;
- return pb_decode(&substream, (pb_field_t*)field->ptr, dest);
+ status = pb_decode(&substream, (pb_field_t*)field->ptr, dest);
+ stream->state = substream.state;
+ return status;
}