/**
* Compiles template to PHP code.
* @return string
*/
public function compile($name)
{
foreach ($this->onCompile ?: [] as $cb) {
call_user_func(Helpers::checkCallback($cb), $this);
}
$this->onCompile = [];
$source = $this->getLoader()->getContent($name);
try {
$tokens = $this->getParser()->setContentType($this->contentType)->parse($source);
$code = $this->getCompiler()->setContentType($this->contentType)->compile($tokens, $this->getTemplateClass($name));
} catch (\Exception $e) {
if (!$e instanceof CompileException) {
$e = new CompileException("Thrown exception '{$e->getMessage()}'", NULL, $e);
}
$line = isset($tokens) ? $this->getCompiler()->getLine() : $this->getParser()->getLine();
throw $e->setSource($source, $line, $name);
}
if (!preg_match('#\\n|\\?#', $name)) {
$code = "<?php\n// source: {$name}\n?>" . $code;
}
$code = Helpers::optimizePhp($code);
return $code;
}
/**
* @return string
*/
private function loadTemplate($name)
{
$code = $this->compile($name);
try {
if (@eval('?>' . $code) === FALSE) {
// @ is escalated to exception
$error = error_get_last();
$e = new CompileException('Error in template: ' . $error['message']);
throw $e->setSource($code, $error['line'], $name . ' (compiled)');
}
} catch (\ParseError $e) {
$e = new CompileException('Error in template: ' . $e->getMessage(), 0, $e);
throw $e->setSource($code, $e->getLine(), $name . ' (compiled)');
}
return $code;
}
/**
* @return void
*/
private function loadTemplate($name)
{
if (!$this->tempDirectory) {
$code = $this->compile($name);
if (@eval('?>' . $code) === FALSE) {
// @ is escalated to exception
$error = error_get_last();
$e = new CompileException('Error in template: ' . $error['message']);
throw $e->setSource($code, $error['line'], "{$name} (compiled)");
}
return;
}
$file = $this->getCacheFile($name);
if (!$this->isExpired($file, $name) && @(include $file) !== FALSE) {
// @ - file may not exist
return;
}
if (!is_dir($this->tempDirectory)) {
@mkdir($this->tempDirectory);
// @ - directory may already exist
}
$handle = fopen("{$file}.lock", 'c+');
if (!$handle || !flock($handle, LOCK_EX)) {
throw new \RuntimeException("Unable to acquire exclusive lock '{$file}.lock'.");
}
if (!is_file($file) || $this->isExpired($file, $name)) {
$code = $this->compile($name);
if (file_put_contents("{$file}.tmp", $code) !== strlen($code) || !rename("{$file}.tmp", $file)) {
@unlink("{$file}.tmp");
// @ - file may not exist
throw new \RuntimeException("Unable to create '{$file}'.");
}
}
if ((include $file) === FALSE) {
throw new \RuntimeException("Unable to load '{$file}'.");
}
flock($handle, LOCK_UN);
}
