/* Initialize message fields to default values, recursively */ static void pb_message_set_to_defaults(const pb_field_t fields[], void *dest_struct) { pb_field_iterator_t iter; pb_field_init(&iter, fields, dest_struct); /* Initialize size/has fields and apply default values */ do { pb_type_t type; type = iter.current->type; if (iter.current->tag == 0) continue; if (PB_ATYPE(type) == PB_ATYPE_STATIC) { /* Initialize the size field for optional/repeated fields to 0. */ if (PB_HTYPE(type) == PB_HTYPE_OPTIONAL) { *(bool*)iter.pSize = false; } else if (PB_HTYPE(type) == PB_HTYPE_REPEATED) { *(size_t*)iter.pSize = 0; continue; /* Array is empty, no need to initialize contents */ } /* Initialize field contents to default value */ if (PB_LTYPE(iter.current->type) == PB_LTYPE_SUBMESSAGE) { pb_message_set_to_defaults((const pb_field_t *) iter.current->ptr, iter.pData); } else 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_ATYPE(type) == PB_ATYPE_CALLBACK) { continue; /* Don't overwrite callback */ } } while (pb_field_next(&iter)); }
bool checkreturn pb_decode_noinit(pb_istream_t *stream, const pb_field_t fields[], void *dest_struct) { uint8_t fields_seen[(PB_MAX_REQUIRED_FIELDS + 7) / 8] = {0}; /* Used to check for required fields */ pb_field_iterator_t iter; pb_field_init(&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_find(&iter, tag)) { /* No match found, skip data */ if (!pb_skip_field(stream, wire_type)) return false; continue; } if (PB_HTYPE(iter.current->type) == PB_HTYPE_REQUIRED && iter.required_field_index < PB_MAX_REQUIRED_FIELDS) { fields_seen[iter.required_field_index >> 3] |= (uint8_t)(1 << (iter.required_field_index & 7)); } if (!decode_field(stream, wire_type, &iter)) return false; }
bool checkreturn pb_decode_noinit(pb_istream_t *stream, const pb_field_t fields[], void *dest_struct) { uint8_t fields_seen[(PB_MAX_REQUIRED_FIELDS + 7) / 8] = {0}; /* Used to check for required fields */ uint32_t extension_range_start = 0; pb_field_iterator_t iter; pb_field_init(&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_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 (PB_HTYPE(iter.pos->type) == PB_HTYPE_REQUIRED && iter.required_field_index < PB_MAX_REQUIRED_FIELDS) { fields_seen[iter.required_field_index >> 3] |= (uint8_t)(1 << (iter.required_field_index & 7)); } if (!decode_field(stream, wire_type, &iter)) return false; }