PhabricatorMacroMemeController.php
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PhabricatorMacroMemeController.php
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	<?php

	final class PhabricatorMacroMemeController
	extends PhabricatorMacroController {

	public function shouldAllowPublic() {
	return true;
	}

	public function processRequest() {
	$request = $this->getRequest();
	$macro_name = $request->getStr('macro');
	$upper_text = $request->getStr('uppertext');
	$lower_text = $request->getStr('lowertext');
	$user = $request->getUser();

	$uri = self::generateMacro($user, $macro_name,
	$upper_text, $lower_text);
	if ($uri === false) {
	return new Aphront404Response();
	}
	return id(new AphrontRedirectResponse())
	->setIsExternal(true)
	->setURI($uri);
	}

	public static function generateMacro($user, $macro_name, $upper_text,
	$lower_text) {
	$macro = id(new PhabricatorMacroQuery())
	->setViewer($user)
	->withNames(array($macro_name))
	->needFiles(true)
	->executeOne();
	if (!$macro) {
	return false;
	}
	$file = $macro->getFile();

	$upper_text = strtoupper($upper_text);
	$lower_text = strtoupper($lower_text);
	$mixed_text = md5($upper_text).':'.md5($lower_text);
	$hash = 'meme'.hash('sha256', $mixed_text);
	$xform = id(new PhabricatorTransformedFile())
	->loadOneWhere('originalphid=%s and transform=%s',
	$file->getPHID(), $hash);

	if ($xform) {
	$memefile = id(new PhabricatorFileQuery())
	->setViewer($user)
	->withPHIDs(array($xform->getTransformedPHID()))
	->executeOne();
	if ($memefile) {
	return $memefile->getBestURI();
	}
	}

	$unguarded = AphrontWriteGuard::beginScopedUnguardedWrites();
	$transformers = (new PhabricatorImageTransformer());
	$newfile = $transformers
	->executeMemeTransform($file, $upper_text, $lower_text);
	$xfile = new PhabricatorTransformedFile();
	$xfile->setOriginalPHID($file->getPHID());
	$xfile->setTransformedPHID($newfile->getPHID());
	$xfile->setTransform($hash);
	$xfile->save();

	return $newfile->getBestURI();
	}
	}

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