testing

PhabricatorSourceDocumentEngine.php
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			<?php

			final class PhabricatorSourceDocumentEngine
			extends PhabricatorTextDocumentEngine {

			const ENGINEKEY = 'source';

			public function getViewAsLabel(PhabricatorDocumentRef $ref) {
			return pht('View as Source');
			}

			public function canConfigureHighlighting(PhabricatorDocumentRef $ref) {
			return true;
			}

			public function canBlame(PhabricatorDocumentRef $ref) {
			return true;
			}

			protected function getDocumentIconIcon(PhabricatorDocumentRef $ref) {
			return 'fa-code';
			}

			protected function getContentScore(PhabricatorDocumentRef $ref) {
			return 1500;
			}

			protected function newDocumentContent(PhabricatorDocumentRef $ref) {
			$content = $this->loadTextData($ref);

			$messages = array();

			$highlighting = $this->getHighlightingConfiguration();
			if ($highlighting !== null) {
			$content = PhabricatorSyntaxHighlighter::highlightWithLanguage(
			$highlighting,
			$content);
			} else {
			$highlight_limit = DifferentialChangesetParser::HIGHLIGHT_BYTE_LIMIT;
			if (strlen($content) > $highlight_limit) {
			$messages[] = $this->newMessage(
			pht(
			'This file is larger than %s, so syntax highlighting was skipped.',
			phutil_format_bytes($highlight_limit)));
			} else {
			$content = PhabricatorSyntaxHighlighter::highlightWithFilename(
			$ref->getName(),
			$content);
			}
			}

			$options = array();
			if ($ref->getBlameURI()) {
			$content = phutil_split_lines($content);
			$blame = range(1, count($content));
			$blame = array_fuse($blame);
			$options['blame'] = $blame;
			}

			return array(
			$messages,
			$this->newTextDocumentContent($ref, $content, $options),
			);
			}

			}