DifferentialHunkModern.php
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	<?php

	final class DifferentialHunkModern extends DifferentialHunk {

	const DATATYPE_TEXT = 'text';
	const DATATYPE_FILE = 'file';

	const DATAFORMAT_RAW = 'byte';
	const DATAFORMAT_DEFLATE = 'gzde';

	protected $dataType;
	protected $dataEncoding;
	protected $dataFormat;
	protected $data;

	public function getTableName() {
	return 'differential_hunk_modern';
	}

	public function getConfiguration() {
	return array(
	self::CONFIG_BINARY => array(
	'data' => true,
	),
	) + parent::getConfiguration();
	}

	public function setChanges($text) {
	$this->dataEncoding = $this->detectEncodingForStorage($text);
	$this->dataType = self::DATATYPE_TEXT;
	$this->dataFormat = self::DATAFORMAT_RAW;
	$this->data = $text;

	return $this;
	}

	public function getChanges() {
	return $this->getUTF8StringFromStorage(
	$this->getRawData(),
	$this->getDataEncoding());
	}

	private function getRawData() {
	$type = $this->getDataType();
	$data = $this->getData();

	switch ($type) {
	case self::DATATYPE_TEXT:
	// In this storage type, the changes are stored on the object.
	$data = $data;
	break;
	case self::DATATYPE_FILE:
	default:
	throw new Exception(
	pht('Hunk has unsupported data type "%s"!', $type));
	}

	$format = $this->getDataFormat();
	switch ($format) {
	case self::DATAFORMAT_RAW:
	// In this format, the changes are stored as-is.
	$data = $data;
	break;
	case self::DATAFORMAT_DEFLATE:
	default:
	throw new Exception(
	pht('Hunk has unsupported data encoding "%s"!', $type));
	}

	return $data;
	}

	}