testing

PhabricatorJSONDocumentEngine.php
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			<?php

			final class PhabricatorJSONDocumentEngine
			extends PhabricatorTextDocumentEngine {

			const ENGINEKEY = 'json';

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

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

			protected function getContentScore(PhabricatorDocumentRef $ref) {
			if (preg_match('/\.json\z/', $ref->getName())) {
			return 2000;
			}

			if ($ref->isProbablyJSON()) {
			return 1750;
			}

			return 500;
			}

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

			try {
			$data = phutil_json_decode($raw_data);

			if (preg_match('/^\s*\[/', $raw_data)) {
			$content = id(new PhutilJSON())->encodeAsList($data);
			} else {
			$content = id(new PhutilJSON())->encodeFormatted($data);
			}

			$message = null;
			$content = PhabricatorSyntaxHighlighter::highlightWithLanguage(
			'json',
			$content);
			} catch (PhutilJSONParserException $ex) {
			$message = $this->newMessage(
			pht(
			'This document is not valid JSON: %s',
			$ex->getMessage()));

			$content = $raw_data;
			}

			return array(
			$message,
			$this->newTextDocumentContent($content),
			);
			}

			}