/**
* compiles the provided string down to php code
*
* @param Core $dwoo
* @param ITemplate $template the template to compile
*
* @return mixed|string a compiled php string
* @throws Exception\CompilationException
*/
public function compile(Core $dwoo, ITemplate $template)
{
// init vars
$tpl = $template->getSource();
$ptr = 0;
$this->dwoo = $dwoo;
$this->template = $template;
$this->templateSource =& $tpl;
$this->pointer =& $ptr;
while (true) {
// if pointer is at the beginning, reset everything, that allows a plugin to externally reset the compiler if everything must be reparsed
if ($ptr === 0) {
// resets variables
$this->usedPlugins = array();
$this->data = array();
$this->scope =& $this->data;
$this->scopeTree = array();
$this->stack = array();
$this->line = 1;
$this->templatePlugins = array();
// add top level block
$compiled = $this->addBlock('TopLevel', array(), 0);
$this->stack[0]['buffer'] = '';
if ($this->debug) {
Debug::setMessage('COMPILER INIT<br>');
}
if ($this->debug) {
Debug::setMessage('PROCESSING PREPROCESSORS (' . count($this->processors['pre']) . ')<br>');
}
// runs preprocessors
foreach ($this->processors['pre'] as $preProc) {
if (is_array($preProc) && isset($preProc['autoload'])) {
$preProc = $this->loadProcessor($preProc['class'], $preProc['name']);
}
if (is_array($preProc) && $preProc[0] instanceof Processor) {
$tpl = call_user_func($preProc, $tpl);
} else {
$tpl = call_user_func($preProc, $this, $tpl);
}
}
unset($preProc);
// show template source if debug
if ($this->debug) {
Debug::setMessage('<pre>' . print_r(htmlentities($tpl), true) . '</pre><hr />');
}
// strips php tags if required by the security policy
if ($this->securityPolicy !== null) {
$search = array('{<\\?php.*?\\?>}');
if (ini_get('short_open_tags')) {
$search = array('{<\\?.*?\\?>}', '{<%.*?%>}');
}
switch ($this->securityPolicy->getPhpHandling()) {
case Policy::PHP_ALLOW:
break;
case Policy::PHP_ENCODE:
$tpl = preg_replace_callback($search, array($this, 'phpTagEncodingHelper'), $tpl);
break;
case Policy::PHP_REMOVE:
$tpl = preg_replace($search, '', $tpl);
}
}
}
$pos = strpos($tpl, $this->ld, $ptr);
if ($pos === false) {
$this->push(substr($tpl, $ptr), 0);
break;
} elseif (substr($tpl, $pos - 1, 1) === '\\' && substr($tpl, $pos - 2, 1) !== '\\') {
$this->push(substr($tpl, $ptr, $pos - $ptr - 1) . $this->ld);
$ptr = $pos + strlen($this->ld);
} elseif (preg_match('/^' . $this->ldr . ($this->allowLooseOpenings ? '\\s*' : '') . 'literal' . ($this->allowLooseOpenings ? '\\s*' : '') . $this->rdr . '/s', substr($tpl, $pos), $litOpen)) {
if (!preg_match('/' . $this->ldr . ($this->allowLooseOpenings ? '\\s*' : '') . '\\/literal' . ($this->allowLooseOpenings ? '\\s*' : '') . $this->rdr . '/s', $tpl, $litClose, PREG_OFFSET_CAPTURE, $pos)) {
throw new Exception\CompilationException($this, 'The {literal} blocks must be closed explicitly with {/literal}');
}
$endpos = $litClose[0][1];
$this->push(substr($tpl, $ptr, $pos - $ptr) . substr($tpl, $pos + strlen($litOpen[0]), $endpos - $pos - strlen($litOpen[0])));
$ptr = $endpos + strlen($litClose[0][0]);
} else {
if (substr($tpl, $pos - 2, 1) === '\\' && substr($tpl, $pos - 1, 1) === '\\') {
$this->push(substr($tpl, $ptr, $pos - $ptr - 1));
$ptr = $pos;
}
$this->push(substr($tpl, $ptr, $pos - $ptr));
$ptr = $pos;
$pos += strlen($this->ld);
if ($this->allowLooseOpenings) {
while (substr($tpl, $pos, 1) === ' ') {
$pos += 1;
}
} else {
if (substr($tpl, $pos, 1) === ' ' || substr($tpl, $pos, 1) === "\r" || substr($tpl, $pos, 1) === "\n" || substr($tpl, $pos, 1) === "\t") {
$ptr = $pos;
$this->push($this->ld);
continue;
}
}
// check that there is an end tag present
if (strpos($tpl, $this->rd, $pos) === false) {
throw new Exception\CompilationException($this, 'A template tag was not closed, started with "' . substr($tpl, $ptr, 30) . '"');
}
$ptr += strlen($this->ld);
$subptr = $ptr;
while (true) {
$parsed = $this->parse($tpl, $subptr, null, false, 'root', $subptr);
// reload loop if the compiler was reset
if ($ptr === 0) {
continue 2;
}
$len = $subptr - $ptr;
$this->push($parsed, substr_count(substr($tpl, $ptr, $len), "\n"));
$ptr += $len;
if ($parsed === false) {
break;
}
}
}
}
$compiled .= $this->removeBlock('TopLevel');
if ($this->debug) {
Debug::setMessage('PROCESSING POSTPROCESSORS<br>');
}
foreach ($this->processors['post'] as $postProc) {
if (is_array($postProc) && isset($postProc['autoload'])) {
$postProc = $this->loadProcessor($postProc['class'], $postProc['name']);
}
if (is_array($postProc) && $postProc[0] instanceof Processor) {
$compiled = call_user_func($postProc, $compiled);
} else {
$compiled = call_user_func($postProc, $this, $compiled);
}
}
unset($postProc);
if ($this->debug) {
Debug::setMessage('COMPILATION COMPLETE : MEM USAGE : ' . memory_get_usage(true) . '<br>');
}
$output = "<?php\n/* template head */\n";
// build plugin preloader
foreach ($this->usedPlugins as $plugin => $type) {
if ($type & Core::CUSTOM_PLUGIN) {
continue;
}
switch ($type) {
case Core::BLOCK_PLUGIN:
case Core::CLASS_PLUGIN:
foreach (array(Core::PLUGIN_BLOCK_CLASS_PREFIX_NAME, Core::PLUGIN_FUNC_CLASS_PREFIX_NAME) as $value) {
try {
$reflectionClass = new \ReflectionClass($value . Core::underscoreToCamel($plugin));
$output .= "if (class_exists('\\{$reflectionClass->name}')===false)\n\t\$this->getLoader()->loadPlugin('{$plugin}');\n";
} catch (\ReflectionException $Exception) {
}
}
break;
case Core::FUNC_PLUGIN:
foreach (array(Core::PLUGIN_BLOCK_FUNCTION_PREFIX_NAME, Core::PLUGIN_FUNC_FUNCTION_PREFIX_NAME) as $value) {
try {
$reflectionFunction = new \ReflectionFunction($value . Core::underscoreToCamel($plugin));
$output .= "if (function_exists('\\{$reflectionFunction->name}')===false)\n\t\$this->getLoader()->loadPlugin('{$plugin}');\n";
} catch (\ReflectionException $Exception) {
}
}
break;
case Core::SMARTY_MODIFIER:
$output .= "if (function_exists('smarty_modifier_{$plugin}')===false)\n\t\$this->getLoader()->loadPlugin('{$plugin}');\n";
break;
case Core::SMARTY_FUNCTION:
$output .= "if (function_exists('smarty_function_{$plugin}')===false)\n\t\$this->getLoader()->loadPlugin('{$plugin}');\n";
break;
case Core::SMARTY_BLOCK:
$output .= "if (function_exists('smarty_block_{$plugin}')===false)\n\t\$this->getLoader()->loadPlugin('{$plugin}');\n";
break;
case Core::PROXY_PLUGIN:
$output .= $this->getDwoo()->getPluginProxy()->getPreloader($plugin);
break;
default:
throw new Exception\CompilationException($this, 'Type error for ' . $plugin . ' with type' . $type);
}
}
foreach ($this->templatePlugins as $function => $attr) {
if (isset($attr['called']) && $attr['called'] === true && !isset($attr['checked'])) {
$this->resolveSubTemplateDependencies($function);
}
}
foreach ($this->templatePlugins as $function) {
if (isset($function['called']) && $function['called'] === true) {
$output .= $function['body'] . PHP_EOL;
}
}
$output .= $compiled . "\n?>";
$output = preg_replace('/(?<!;|\\}|\\*\\/|\\n|\\{)(\\s*' . preg_quote(self::PHP_CLOSE, '/') . preg_quote(self::PHP_OPEN, '/') . ')/', ";\n", $output);
$output = str_replace(self::PHP_CLOSE . self::PHP_OPEN, "\n", $output);
// handle <?xml tag at the beginning
$output = preg_replace('#(/\\* template body \\*/ \\?>\\s*)<\\?xml#is', '$1<?php echo \'<?xml\'; ?>', $output);
// add another line break after PHP closing tags that have a line break following,
// as we do not know whether it's intended, and PHP will strip it otherwise
$output = preg_replace('/(?<!"|<\\?xml)\\s*\\?>\\n/', '$0' . "\n", $output);
if ($this->debug) {
Debug::setMessage('<hr><pre>');
$lines = preg_split('{\\r\\n|\\n|<br />}', highlight_string($output, true));
array_shift($lines);
foreach ($lines as $i => $line) {
Debug::setMessage($i + 1 . '. ' . $line . "\r\n");
}
}
if ($this->debug) {
Debug::setMessage('<hr></pre></pre>');
}
$this->template = $this->dwoo = null;
$tpl = null;
return $output;
}
/**
* [util function] triggers a dwoo error
* @param string $message the error message
* @param int $level the error level, one of the PHP's E_* constants
*/
public function triggerError($message, $level = E_USER_NOTICE)
{
if (!($tplIdentifier = $this->template->getResourceIdentifier())) {
$tplIdentifier = $this->template->getResourceName();
}
trigger_error('Dwoo error (in ' . $tplIdentifier . ') : ' . $message, $level);
}