| <?php | |
| namespace DrSlump\Protobuf\Codec; | |
| use DrSlump\Protobuf; | |
| /** | |
| * This codec serializes to Protobuf's TextFormat, unserialization | |
| * is not supported. | |
| * | |
| */ | |
| class TextFormat implements Protobuf\CodecInterface | |
| { | |
| /** | |
| * @param \DrSlump\Protobuf\Message $message | |
| * @return string | |
| */ | |
| public function encode(Protobuf\Message $message) | |
| { | |
| return $this->encodeMessage($message); | |
| } | |
| /** | |
| * | |
| * @throw \DrSlump\Protobuf\Exception - Decoding is not supported | |
| * @param \DrSlump\Protobuf\Message $message | |
| * @param String $data | |
| * @return \DrSlump\Protobuf\Message | |
| */ | |
| public function decode(Protobuf\Message $message, $data) | |
| { | |
| throw new \BadMethodCallException('TextFormat codec does not support decoding'); | |
| } | |
| protected function encodeMessage(Protobuf\Message $message, $level = 0) | |
| { | |
| $descriptor = Protobuf::getRegistry()->getDescriptor($message); | |
| $indent = str_repeat(' ', $level); | |
| $data = ''; | |
| foreach ($descriptor->getFields() as $tag=>$field) { | |
| $empty = !$message->_has($tag); | |
| if ($field->isRequired() && $empty) { | |
| throw new \UnexpectedValueException( | |
| 'Message ' . get_class($message) . '\'s field tag ' . $tag . '(' . $field->getName() . ') is required but has no value' | |
| ); | |
| } | |
| if ($empty) { | |
| continue; | |
| } | |
| $name = $field->getName(); | |
| $value = $message->_get($tag); | |
| if ($field->isRepeated()) { | |
| foreach ($value as $val) { | |
| if ($field->getType() !== Protobuf::TYPE_MESSAGE) { | |
| $data .= $indent . $name . ': ' . json_encode($val) . "\n"; | |
| } else { | |
| $data .= $indent . $name . " {\n"; | |
| $data .= $this->encodeMessage($val, $level+1); | |
| $data .= $indent . "}\n"; | |
| } | |
| } | |
| } else { | |
| if ($field->getType() === Protobuf::TYPE_MESSAGE) { | |
| $data .= $indent . $name . " {\n"; | |
| $data .= $this->encodeMessage($value, $level+1); | |
| $data .= $indent . "}\n"; | |
| } else { | |
| $data .= $indent . $name . ': ' . json_encode($value) . "\n"; | |
| } | |
| } | |
| } | |
| return $data; | |
| } | |
| } | |