DifferentialRawDiffRenderer.php
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	<?php
	final class DifferentialRawDiffRenderer {

	private $changesets;
	private $format = 'unified';
	private $viewer;

	public function setFormat($format) {
	$this->format = $format;
	return $this;
	}

	public function getFormat() {
	return $this->format;
	}

	public function setChangesets(array $changesets) {
	assert_instances_of($changesets, 'DifferentialChangeset');

	$this->changesets = $changesets;
	return $this;
	}

	public function getChangesets() {
	return $this->changesets;
	}

	public function setViewer(PhabricatorUser $viewer) {
	$this->viewer = $viewer;
	return $this;
	}

	public function getViewer() {
	return $this->viewer;
	}

	public function buildPatch() {
	$diff = new DifferentialDiff();
	$diff->attachChangesets($this->getChangesets());
	foreach ($diff->getChangesets() as $changeset) {
	$changeset->attachHunks(
	$changeset->loadRelatives(new DifferentialHunk(), 'changesetID'));
	}

	$raw_changes = $diff->buildChangesList();
	$changes = array();
	foreach ($raw_changes as $changedict) {
	$changes[] = ArcanistDiffChange::newFromDictionary($changedict);
	}

	$viewer = $this->getViewer();
	$loader = id(new PhabricatorFileBundleLoader())
	->setViewer($viewer);

	$bundle = ArcanistBundle::newFromChanges($changes);
	$bundle->setLoadFileDataCallback(array($loader, 'loadFileData'));

	$format = $this->getFormat();
	switch ($format) {
	case 'git':
	return $bundle->toGitPatch();
	break;
	case 'unified':
	default:
	return $bundle->toUnifiedDiff();
	break;
	}
	}
	}