view = $view;
}
public function generate(): void
{
$input = ROOT . '/views/' . $this->view . '.php';
$temporaryFiles = [];
$sections = ['externalCss' => '', 'inlineCss' => '', 'externalJs' => '', 'inlineJs' => ''];
$extra = ['', ''];
do {
$parser = new Parser($input);
$fragment = $parser->parse();
$extends = $fragment->getExtends();
$this->generateAssets($fragment, $sections);
$sections = array_merge($sections, $fragment->getSections()); //TODO: detect if section defined multiple times
$extra[0] = $fragment->getExtra()[0] . $extra[0];
$extra[1] = $extra[1] . $fragment->getExtra()[1];
if ($extends === null) {
$this->writeFinal($extra, $input, ROOT . '/cache/views/' . $this->view . '.php');
break;
}
$tmpFile = tempnam(sys_get_temp_dir(), 'mapg-view-');
$temporaryFiles[] = $tmpFile;
$this->extendTemplate($sections, ROOT . '/views/' . $extends . '.php', $tmpFile);
$input = $tmpFile;
} while (true);
foreach ($temporaryFiles as $tmpFile) {
unlink($tmpFile);
}
}
private function extendTemplate(array $sections, string $file, string $output): void
{
$inputFileHandle = fopen($file, 'r');
if (!$inputFileHandle) {
throw new \Exception('Cannot open file ' . $file);
}
$outputFileHandle = fopen($output, 'w');
if (!$outputFileHandle) {
throw new \Exception('Cannot open file ' . $output . 'for writing.');
}
$lineNumber = 0;
while (($line = fgets($inputFileHandle)) !== false) {
++$lineNumber;
if (preg_match('/^\s*@yields\(\'([\w\/]+)\'\)\s*$/', $line, $matches)) {
if (isset($sections[$matches[1]])) {
fwrite($outputFileHandle, $sections[$matches[1]]);
}
} else {
fwrite($outputFileHandle, $line);
}
}
fclose($inputFileHandle);
fclose($outputFileHandle);
}
private function writeFinal(array $extra, string $file, string $output): void
{
$dirname = pathinfo($output, PATHINFO_DIRNAME);
if (!is_dir($dirname)) {
mkdir($dirname, 0755, true);
}
$inputFileHandle = fopen($file, 'r');
if (!$inputFileHandle) {
throw new \Exception('Cannot open file ' . $file);
}
$outputFileHandle = fopen($output, 'w');
if (!$outputFileHandle) {
throw new \Exception('Cannot open file ' . $output . 'for writing.');
}
fwrite($outputFileHandle, $extra[0]);
while (($line = fgets($inputFileHandle)) !== false) {
fwrite($outputFileHandle, $line);
}
fwrite($outputFileHandle, $extra[1]);
fclose($inputFileHandle);
fclose($outputFileHandle);
}
private function generateAssets(ParsedFragment $fragment, array &$sections)
{
foreach ($fragment->getCss() as $cssFile) {
$asset = $this->parseAsset($cssFile);
if (isset($asset['code'])) {
$sections['inlineCss'] .= '' . PHP_EOL;
} elseif (isset($asset['file'])) {
$sections['externalCss'] .= '' . PHP_EOL;
}
}
foreach ($fragment->getJs() as $jsFile) {
$asset = $this->parseAsset($jsFile);
if (isset($asset['code'])) {
$sections['inlineJs'] .= '' . PHP_EOL;
} elseif (isset($asset['file'])) {
$sections['externalJs'] .= '' . PHP_EOL;
}
}
}
private function parseAsset(string $asset): array
{
$output = [];
if (preg_match('/^[\w\/\.]+$/', $asset)) {
if (
empty($_ENV['DEV']) &&
filesize(ROOT . '/public/static/' . $asset) < self::INLINE_ASSET_LIMIT
) {
$output['code'] = file_get_contents(ROOT . '/public/static/' . $asset);
} else {
$output['file'] = '/' . $asset . '?rev=';
}
} else {
$output['file'] = $asset;
}
return $output;
}
}