PhabricatorApplicationTransactionTextDiffDetailView.php
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	<?php

	final class PhabricatorApplicationTransactionTextDiffDetailView
	extends AphrontView {

	private $oldText;
	private $newText;

	public function setNewText($new_text) {
	$this->newText = $new_text;
	return $this;
	}

	public function setOldText($old_text) {
	$this->oldText = $old_text;
	return $this;
	}

	public function render() {
	$old = $this->oldText;
	$new = $this->newText;

	// TODO: On mobile, or perhaps by default, we should switch to 1-up once
	// that is built.

	if (strlen($old)) {
	$old = phutil_utf8_hard_wrap($old, 80);
	$old = implode("\n", $old)."\n";
	}

	if (strlen($new)) {
	$new = phutil_utf8_hard_wrap($new, 80);
	$new = implode("\n", $new)."\n";
	}

	try {
	$engine = new PhabricatorDifferenceEngine();
	$changeset = $engine->generateChangesetFromFileContent($old, $new);

	$whitespace_mode = DifferentialChangesetParser::WHITESPACE_SHOW_ALL;

	$markup_engine = new PhabricatorMarkupEngine();
	$markup_engine->setViewer($this->getUser());

	$parser = new DifferentialChangesetParser();
	$parser->setChangeset($changeset);
	$parser->setMarkupEngine($markup_engine);
	$parser->setWhitespaceMode($whitespace_mode);

	return $parser->render(0, PHP_INT_MAX, array());
	} catch (Exception $ex) {
	return $ex->getMessage();
	}
	}

	}