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DifferentialHunkModern.php
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Created
Wed, Jan 22, 04:18

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_DEFLATED = 'gzde';
protected $dataType;
protected $dataEncoding;
protected $dataFormat;
protected $data;
private $rawData;
private $forcedEncoding;
public function getTableName() {
return 'differential_hunk_modern';
}
protected function getConfiguration() {
return array(
self::CONFIG_BINARY => array(
'data' => true,
),
self::CONFIG_COLUMN_SCHEMA => array(
'dataType' => 'bytes4',
'dataEncoding' => 'text16?',
'dataFormat' => 'bytes4',
'oldOffset' => 'uint32',
'oldLen' => 'uint32',
'newOffset' => 'uint32',
'newLen' => 'uint32',
),
self::CONFIG_KEY_SCHEMA => array(
'key_changeset' => array(
'columns' => array('changesetID'),
),
'key_created' => array(
'columns' => array('dateCreated'),
),
),
) + parent::getConfiguration();
}
public function setChanges($text) {
$this->rawData = $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(
$this->getRawData(),
nonempty($this->forcedEncoding, $this->getDataEncoding()));
}
public function forceEncoding($encoding) {
$this->forcedEncoding = $encoding;
return $this;
}
public function save() {
$type = $this->getDataType();
$format = $this->getDataFormat();
// Before saving the data, attempt to compress it.
if ($type == self::DATATYPE_TEXT) {
if ($format == self::DATAFORMAT_RAW) {
$data = $this->getData();
$deflated = PhabricatorCaches::maybeDeflateData($data);
if ($deflated !== null) {
$this->data = $deflated;
$this->dataFormat = self::DATAFORMAT_DEFLATED;
}
}
}
return parent::save();
}
private function getRawData() {
if ($this->rawData === null) {
$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_DEFLATED:
$data = PhabricatorCaches::inflateData($data);
break;
default:
throw new Exception(
pht('Hunk has unsupported data encoding "%s"!', $type));
}
$this->rawData = $data;
}
return $this->rawData;
}
}

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