public function parse($filename)
{
if (!file_exists($filename)) {
throw new \Exception('File not found "' . $filename . '"');
}
$tokens = $this->lexer->lex(file_get_contents($filename));
$current_node = [static::T_ROOT];
$current_node_level = 0;
/** @var Node|null $node */
$node = null;
$nodes = [];
/** @var Rewrite|null $rewrite */
$rewrite = null;
$variable_key = $variable_value = null;
$config = new Collection([]);
foreach ($tokens as $token) {
$line_context = " (" . $filename . "#" . $token[1] . ")";
switch ($token[0]) {
/** Nodes */
case static::T_NODE_OPEN:
if (!in_array($current_node[$current_node_level], [static::T_ROOT]) && in_array($token[3][1], ['VirtualHost', 'Directory'])) {
throw new SyntaxErrorException('Syntax error, expected T_ROOT given [Node: ' . $token[3][1] . '] ' . $this->get_constant_name($current_node[$current_node_level]) . ' ' . $line_context);
}
if (!in_array($current_node[$current_node_level], [static::T_NODE_OPEN]) && in_array($token[3][1], ['IfModule'])) {
throw new SyntaxErrorException('Syntax error, expected T_NODE_OPEN given [Node: ' . $token[3][1] . '] ' . $this->get_constant_name($current_node[$current_node_level]) . ' ' . $line_context);
}
switch ($token[3][1]) {
case 'VirtualHost':
$node = new VirtualHost($token['3']['2']);
break;
case 'Directory':
$node = new Directory($token['3']['2']);
break;
case 'IfModule':
if (empty($node) || !$node instanceof Node) {
throw new SyntaxErrorException('No current node defined ' . $line_context);
}
$nodes[$current_node_level] = $node;
$current_node_level++;
$node = new IfModule($token['3']['2']);
break;
}
$current_node[$current_node_level] = static::T_NODE_OPEN;
break;
case static::T_NODE_CLOSE:
if ($current_node_level > 0) {
$current_node_level--;
$nodes[$current_node_level]->children[] = $node;
$node = $nodes[$current_node_level];
unset($nodes[$current_node_level]);
} else {
if (!in_array($current_node[$current_node_level], [static::T_NODE_OPEN])) {
throw new SyntaxErrorException('Syntax error, expected T_NODE_OPEN given ' . $this->get_constant_name($current_node[$current_node_level]) . $line_context);
}
$config[] = $node;
$current_node[$current_node_level] = static::T_ROOT;
unset($node);
}
break;
case static::T_VARIABLE:
if (!in_array($current_node[$current_node_level], [static::T_NODE_OPEN])) {
throw new SyntaxErrorException('Syntax error, expected T_NODE_OPEN given ' . $this->get_constant_name($current_node[$current_node_level]) . $line_context);
}
$variable_key = trim($token[3][1]);
$variable_value = trim($token[3][2]);
$current_node[$current_node_level] = static::T_VARIABLE;
break;
case static::T_CONTINUE_VARIABLE:
if (!in_array($current_node[$current_node_level], [static::T_VARIABLE])) {
throw new SyntaxErrorException('Syntax error, expected T_VARIABLE given ' . $this->get_constant_name($current_node[$current_node_level]) . $line_context);
}
if ($variable_key === null || $variable_value === null) {
throw new SyntaxErrorException('Syntax error, no variable key or value found ' . $line_context);
}
$variable_value .= ' ' . trim($token[3][1]);
break;
case static::T_LINEBREAK:
switch ($current_node[$current_node_level]) {
case static::T_VARIABLE:
if ($variable_key === null || $variable_value === null) {
throw new SyntaxErrorException('Syntax error, no variable key or value found ' . $line_context);
}
if ($node === null) {
throw new SyntaxErrorException('No node defined ' . $line_context);
}
if (in_array($variable_key, ['RewriteCond', 'RewriteRule'])) {
$rewrite || ($rewrite = new Rewrite());
switch ($variable_key) {
case 'RewriteCond':
$rewrite->conditions[] = $variable_value;
break;
case 'RewriteRule':
$rewrite->rules[] = $variable_value;
if (preg_match('/,?L\\]$/', $variable_value)) {
$node['Rewrite'] = $rewrite;
$rewrite = null;
}
break;
}
} else {
if ($rewrite !== null) {
$node['Rewrite'] = $rewrite;
$rewrite = null;
}
$node[$variable_key] = $variable_value;
}
$variable_key = $variable_value = null;
$current_node[$current_node_level] = static::T_NODE_OPEN;
break;
}
break;
}
}
if ($current_node[0] != static::T_ROOT) {
$line_context = " (" . $filename . "#EOF)";
throw new SyntaxErrorException('Syntax error, expected T_ROOT given ' . $this->get_constant_name($current_node[0]) . $line_context);
}
return $config;
}
