File Manager
<?php
/*
* This file is part of Twig.
*
* (c) Fabien Potencier
* (c) Armin Ronacher
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace WPML\Core\Twig;
use WPML\Core\Twig\Error\SyntaxError;
/**
* Lexes a template string.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class Lexer implements \WPML\Core\Twig_LexerInterface
{
protected $tokens;
protected $code;
protected $cursor;
protected $lineno;
protected $end;
protected $state;
protected $states;
protected $brackets;
protected $env;
// to be renamed to $name in 2.0 (where it is private)
protected $filename;
protected $options;
protected $regexes;
protected $position;
protected $positions;
protected $currentVarBlockLine;
private $source;
const STATE_DATA = 0;
const STATE_BLOCK = 1;
const STATE_VAR = 2;
const STATE_STRING = 3;
const STATE_INTERPOLATION = 4;
const REGEX_NAME = '/[a-zA-Z_\\x7f-\\xff][a-zA-Z0-9_\\x7f-\\xff]*/A';
const REGEX_NUMBER = '/[0-9]+(?:\\.[0-9]+)?([Ee][\\+\\-][0-9]+)?/A';
const REGEX_STRING = '/"([^#"\\\\]*(?:\\\\.[^#"\\\\]*)*)"|\'([^\'\\\\]*(?:\\\\.[^\'\\\\]*)*)\'/As';
const REGEX_DQ_STRING_DELIM = '/"/A';
const REGEX_DQ_STRING_PART = '/[^#"\\\\]*(?:(?:\\\\.|#(?!\\{))[^#"\\\\]*)*/As';
const PUNCTUATION = '()[]{}?:.,|';
public function __construct(\WPML\Core\Twig\Environment $env, array $options = [])
{
$this->env = $env;
$this->options = \array_merge(['tag_comment' => ['{#', '#}'], 'tag_block' => ['{%', '%}'], 'tag_variable' => ['{{', '}}'], 'whitespace_trim' => '-', 'whitespace_line_trim' => '~', 'whitespace_line_chars' => ' \\t\\0\\x0B', 'interpolation' => ['#{', '}']], $options);
// when PHP 7.3 is the min version, we will be able to remove the '#' part in preg_quote as it's part of the default
$this->regexes = [
// }}
'lex_var' => '{
\\s*
(?:' . \preg_quote($this->options['whitespace_trim'] . $this->options['tag_variable'][1], '#') . '\\s*' . '|' . \preg_quote($this->options['whitespace_line_trim'] . $this->options['tag_variable'][1], '#') . '[' . $this->options['whitespace_line_chars'] . ']*' . '|' . \preg_quote($this->options['tag_variable'][1], '#') . ')
}Ax',
// %}
'lex_block' => '{
\\s*
(?:' . \preg_quote($this->options['whitespace_trim'] . $this->options['tag_block'][1], '#') . '\\s*\\n?' . '|' . \preg_quote($this->options['whitespace_line_trim'] . $this->options['tag_block'][1], '#') . '[' . $this->options['whitespace_line_chars'] . ']*' . '|' . \preg_quote($this->options['tag_block'][1], '#') . '\\n?' . ')
}Ax',
// {% endverbatim %}
'lex_raw_data' => '{' . \preg_quote($this->options['tag_block'][0], '#') . '(' . $this->options['whitespace_trim'] . '|' . $this->options['whitespace_line_trim'] . ')?\\s*' . '(?:end%s)' . '\\s*' . '(?:' . \preg_quote($this->options['whitespace_trim'] . $this->options['tag_block'][1], '#') . '\\s*' . '|' . \preg_quote($this->options['whitespace_line_trim'] . $this->options['tag_block'][1], '#') . '[' . $this->options['whitespace_line_chars'] . ']*' . '|' . \preg_quote($this->options['tag_block'][1], '#') . ')
}sx',
'operator' => $this->getOperatorRegex(),
// #}
'lex_comment' => '{
(?:' . \preg_quote($this->options['whitespace_trim']) . \preg_quote($this->options['tag_comment'][1], '#') . '\\s*\\n?' . '|' . \preg_quote($this->options['whitespace_line_trim'] . $this->options['tag_comment'][1], '#') . '[' . $this->options['whitespace_line_chars'] . ']*' . '|' . \preg_quote($this->options['tag_comment'][1], '#') . '\\n?' . ')
}sx',
// verbatim %}
'lex_block_raw' => '{
\\s*
(raw|verbatim)
\\s*
(?:' . \preg_quote($this->options['whitespace_trim'] . $this->options['tag_block'][1], '#') . '\\s*' . '|' . \preg_quote($this->options['whitespace_line_trim'] . $this->options['tag_block'][1], '#') . '[' . $this->options['whitespace_line_chars'] . ']*' . '|' . \preg_quote($this->options['tag_block'][1], '#') . ')
}Asx',
'lex_block_line' => '{\\s*line\\s+(\\d+)\\s*' . \preg_quote($this->options['tag_block'][1], '#') . '}As',
// {{ or {% or {#
'lex_tokens_start' => '{
(' . \preg_quote($this->options['tag_variable'][0], '#') . '|' . \preg_quote($this->options['tag_block'][0], '#') . '|' . \preg_quote($this->options['tag_comment'][0], '#') . ')(' . \preg_quote($this->options['whitespace_trim'], '#') . '|' . \preg_quote($this->options['whitespace_line_trim'], '#') . ')?
}sx',
'interpolation_start' => '{' . \preg_quote($this->options['interpolation'][0], '#') . '\\s*}A',
'interpolation_end' => '{\\s*' . \preg_quote($this->options['interpolation'][1], '#') . '}A',
];
}
public function tokenize($code, $name = null)
{
if (!$code instanceof \WPML\Core\Twig\Source) {
@\trigger_error(\sprintf('Passing a string as the $code argument of %s() is deprecated since version 1.27 and will be removed in 2.0. Pass a \\Twig\\Source instance instead.', __METHOD__), \E_USER_DEPRECATED);
$this->source = new \WPML\Core\Twig\Source($code, $name);
} else {
$this->source = $code;
}
if (
// check if PHP is lower than 8.0
version_compare(PHP_VERSION, '8.0', '<')
/* @phpcs:ignore */
&& (int) \ini_get('mbstring.func_overload') & 2
) {
@\trigger_error('Support for having "mbstring.func_overload" different from 0 is deprecated version 1.29 and will be removed in 2.0.', \E_USER_DEPRECATED);
}
if (
//only for PHP< 8.0, after this, this setting is removed.
version_compare(PHP_VERSION, '8.0', '<')
&&
\function_exists('mb_internal_encoding')
/* @phpcs:ignore PHPCompatibility.IniDirectives.RemovedIniDirectives.mbstring_func_overloadDeprecated */
&& (int) \ini_get('mbstring.func_overload') & 2) {
$mbEncoding = \mb_internal_encoding();
\mb_internal_encoding('ASCII');
} else {
$mbEncoding = null;
}
$this->code = \str_replace(["\r\n", "\r"], "\n", $this->source->getCode());
$this->filename = $this->source->getName();
$this->cursor = 0;
$this->lineno = 1;
$this->end = \strlen($this->code);
$this->tokens = [];
$this->state = self::STATE_DATA;
$this->states = [];
$this->brackets = [];
$this->position = -1;
// find all token starts in one go
\preg_match_all($this->regexes['lex_tokens_start'], $this->code, $matches, \PREG_OFFSET_CAPTURE);
$this->positions = $matches;
while ($this->cursor < $this->end) {
// dispatch to the lexing functions depending
// on the current state
switch ($this->state) {
case self::STATE_DATA:
$this->lexData();
break;
case self::STATE_BLOCK:
$this->lexBlock();
break;
case self::STATE_VAR:
$this->lexVar();
break;
case self::STATE_STRING:
$this->lexString();
break;
case self::STATE_INTERPOLATION:
$this->lexInterpolation();
break;
}
}
$this->pushToken(\WPML\Core\Twig\Token::EOF_TYPE);
if (!empty($this->brackets)) {
list($expect, $lineno) = \array_pop($this->brackets);
throw new \WPML\Core\Twig\Error\SyntaxError(\sprintf('Unclosed "%s".', $expect), $lineno, $this->source);
}
if ($mbEncoding) {
\mb_internal_encoding($mbEncoding);
}
return new \WPML\Core\Twig\TokenStream($this->tokens, $this->source);
}
protected function lexData()
{
// if no matches are left we return the rest of the template as simple text token
if ($this->position == \count($this->positions[0]) - 1) {
$this->pushToken(\WPML\Core\Twig\Token::TEXT_TYPE, \substr($this->code, $this->cursor));
$this->cursor = $this->end;
return;
}
// Find the first token after the current cursor
$position = $this->positions[0][++$this->position];
while ($position[1] < $this->cursor) {
if ($this->position == \count($this->positions[0]) - 1) {
return;
}
$position = $this->positions[0][++$this->position];
}
// push the template text first
$text = $textContent = \substr($this->code, $this->cursor, $position[1] - $this->cursor);
// trim?
if (isset($this->positions[2][$this->position][0])) {
if ($this->options['whitespace_trim'] === $this->positions[2][$this->position][0]) {
// whitespace_trim detected ({%-, {{- or {#-)
$text = \rtrim($text);
} elseif ($this->options['whitespace_line_trim'] === $this->positions[2][$this->position][0]) {
// whitespace_line_trim detected ({%~, {{~ or {#~)
// don't trim \r and \n
$text = \rtrim($text, " \t\0\v");
}
}
$this->pushToken(\WPML\Core\Twig\Token::TEXT_TYPE, $text);
$this->moveCursor($textContent . $position[0]);
switch ($this->positions[1][$this->position][0]) {
case $this->options['tag_comment'][0]:
$this->lexComment();
break;
case $this->options['tag_block'][0]:
// raw data?
if (\preg_match($this->regexes['lex_block_raw'], $this->code, $match, 0, $this->cursor)) {
$this->moveCursor($match[0]);
$this->lexRawData($match[1]);
// {% line \d+ %}
} elseif (\preg_match($this->regexes['lex_block_line'], $this->code, $match, 0, $this->cursor)) {
$this->moveCursor($match[0]);
$this->lineno = (int) $match[1];
} else {
$this->pushToken(\WPML\Core\Twig\Token::BLOCK_START_TYPE);
$this->pushState(self::STATE_BLOCK);
$this->currentVarBlockLine = $this->lineno;
}
break;
case $this->options['tag_variable'][0]:
$this->pushToken(\WPML\Core\Twig\Token::VAR_START_TYPE);
$this->pushState(self::STATE_VAR);
$this->currentVarBlockLine = $this->lineno;
break;
}
}
protected function lexBlock()
{
if (empty($this->brackets) && \preg_match($this->regexes['lex_block'], $this->code, $match, 0, $this->cursor)) {
$this->pushToken(\WPML\Core\Twig\Token::BLOCK_END_TYPE);
$this->moveCursor($match[0]);
$this->popState();
} else {
$this->lexExpression();
}
}
protected function lexVar()
{
if (empty($this->brackets) && \preg_match($this->regexes['lex_var'], $this->code, $match, 0, $this->cursor)) {
$this->pushToken(\WPML\Core\Twig\Token::VAR_END_TYPE);
$this->moveCursor($match[0]);
$this->popState();
} else {
$this->lexExpression();
}
}
protected function lexExpression()
{
// whitespace
if (\preg_match('/\\s+/A', $this->code, $match, 0, $this->cursor)) {
$this->moveCursor($match[0]);
if ($this->cursor >= $this->end) {
throw new \WPML\Core\Twig\Error\SyntaxError(\sprintf('Unclosed "%s".', self::STATE_BLOCK === $this->state ? 'block' : 'variable'), $this->currentVarBlockLine, $this->source);
}
}
// arrow function
if ('=' === $this->code[$this->cursor] && '>' === $this->code[$this->cursor + 1]) {
$this->pushToken(\WPML\Core\Twig\Token::ARROW_TYPE, '=>');
$this->moveCursor('=>');
} elseif (\preg_match($this->regexes['operator'], $this->code, $match, 0, $this->cursor)) {
$this->pushToken(\WPML\Core\Twig\Token::OPERATOR_TYPE, \preg_replace('/\\s+/', ' ', $match[0]));
$this->moveCursor($match[0]);
} elseif (\preg_match(self::REGEX_NAME, $this->code, $match, 0, $this->cursor)) {
$this->pushToken(\WPML\Core\Twig\Token::NAME_TYPE, $match[0]);
$this->moveCursor($match[0]);
} elseif (\preg_match(self::REGEX_NUMBER, $this->code, $match, 0, $this->cursor)) {
$number = (float) $match[0];
// floats
if (\ctype_digit($match[0]) && $number <= \PHP_INT_MAX) {
$number = (int) $match[0];
// integers lower than the maximum
}
$this->pushToken(\WPML\Core\Twig\Token::NUMBER_TYPE, $number);
$this->moveCursor($match[0]);
} elseif (\false !== \strpos(self::PUNCTUATION, $this->code[$this->cursor])) {
// opening bracket
if (\false !== \strpos('([{', $this->code[$this->cursor])) {
$this->brackets[] = [$this->code[$this->cursor], $this->lineno];
} elseif (\false !== \strpos(')]}', $this->code[$this->cursor])) {
if (empty($this->brackets)) {
throw new \WPML\Core\Twig\Error\SyntaxError(\sprintf('Unexpected "%s".', $this->code[$this->cursor]), $this->lineno, $this->source);
}
list($expect, $lineno) = \array_pop($this->brackets);
if ($this->code[$this->cursor] != \strtr($expect, '([{', ')]}')) {
throw new \WPML\Core\Twig\Error\SyntaxError(\sprintf('Unclosed "%s".', $expect), $lineno, $this->source);
}
}
$this->pushToken(\WPML\Core\Twig\Token::PUNCTUATION_TYPE, $this->code[$this->cursor]);
++$this->cursor;
} elseif (\preg_match(self::REGEX_STRING, $this->code, $match, 0, $this->cursor)) {
$this->pushToken(\WPML\Core\Twig\Token::STRING_TYPE, \stripcslashes(\substr($match[0], 1, -1)));
$this->moveCursor($match[0]);
} elseif (\preg_match(self::REGEX_DQ_STRING_DELIM, $this->code, $match, 0, $this->cursor)) {
$this->brackets[] = ['"', $this->lineno];
$this->pushState(self::STATE_STRING);
$this->moveCursor($match[0]);
} else {
throw new \WPML\Core\Twig\Error\SyntaxError(\sprintf('Unexpected character "%s".', $this->code[$this->cursor]), $this->lineno, $this->source);
}
}
protected function lexRawData($tag)
{
if ('raw' === $tag) {
@\trigger_error(\sprintf('Twig Tag "raw" is deprecated since version 1.21. Use "verbatim" instead in %s at line %d.', $this->filename, $this->lineno), \E_USER_DEPRECATED);
}
if (!\preg_match(\str_replace('%s', $tag, $this->regexes['lex_raw_data']), $this->code, $match, \PREG_OFFSET_CAPTURE, $this->cursor)) {
throw new \WPML\Core\Twig\Error\SyntaxError(\sprintf('Unexpected end of file: Unclosed "%s" block.', $tag), $this->lineno, $this->source);
}
$text = \substr($this->code, $this->cursor, $match[0][1] - $this->cursor);
$this->moveCursor($text . $match[0][0]);
// trim?
if (isset($match[1][0])) {
if ($this->options['whitespace_trim'] === $match[1][0]) {
// whitespace_trim detected ({%-, {{- or {#-)
$text = \rtrim($text);
} else {
// whitespace_line_trim detected ({%~, {{~ or {#~)
// don't trim \r and \n
$text = \rtrim($text, " \t\0\v");
}
}
$this->pushToken(\WPML\Core\Twig\Token::TEXT_TYPE, $text);
}
protected function lexComment()
{
if (!\preg_match($this->regexes['lex_comment'], $this->code, $match, \PREG_OFFSET_CAPTURE, $this->cursor)) {
throw new \WPML\Core\Twig\Error\SyntaxError('Unclosed comment.', $this->lineno, $this->source);
}
$this->moveCursor(\substr($this->code, $this->cursor, $match[0][1] - $this->cursor) . $match[0][0]);
}
protected function lexString()
{
if (\preg_match($this->regexes['interpolation_start'], $this->code, $match, 0, $this->cursor)) {
$this->brackets[] = [$this->options['interpolation'][0], $this->lineno];
$this->pushToken(\WPML\Core\Twig\Token::INTERPOLATION_START_TYPE);
$this->moveCursor($match[0]);
$this->pushState(self::STATE_INTERPOLATION);
} elseif (\preg_match(self::REGEX_DQ_STRING_PART, $this->code, $match, 0, $this->cursor) && \strlen($match[0]) > 0) {
$this->pushToken(\WPML\Core\Twig\Token::STRING_TYPE, \stripcslashes($match[0]));
$this->moveCursor($match[0]);
} elseif (\preg_match(self::REGEX_DQ_STRING_DELIM, $this->code, $match, 0, $this->cursor)) {
list($expect, $lineno) = \array_pop($this->brackets);
if ('"' != $this->code[$this->cursor]) {
throw new \WPML\Core\Twig\Error\SyntaxError(\sprintf('Unclosed "%s".', $expect), $lineno, $this->source);
}
$this->popState();
++$this->cursor;
} else {
// unlexable
throw new \WPML\Core\Twig\Error\SyntaxError(\sprintf('Unexpected character "%s".', $this->code[$this->cursor]), $this->lineno, $this->source);
}
}
protected function lexInterpolation()
{
$bracket = \end($this->brackets);
if ($this->options['interpolation'][0] === $bracket[0] && \preg_match($this->regexes['interpolation_end'], $this->code, $match, 0, $this->cursor)) {
\array_pop($this->brackets);
$this->pushToken(\WPML\Core\Twig\Token::INTERPOLATION_END_TYPE);
$this->moveCursor($match[0]);
$this->popState();
} else {
$this->lexExpression();
}
}
protected function pushToken($type, $value = '')
{
// do not push empty text tokens
if (\WPML\Core\Twig\Token::TEXT_TYPE === $type && '' === $value) {
return;
}
$this->tokens[] = new \WPML\Core\Twig\Token($type, $value, $this->lineno);
}
protected function moveCursor($text)
{
$this->cursor += \strlen($text);
$this->lineno += \substr_count($text, "\n");
}
protected function getOperatorRegex()
{
$operators = \array_merge(['='], \array_keys($this->env->getUnaryOperators()), \array_keys($this->env->getBinaryOperators()));
$operators = \array_combine($operators, \array_map('strlen', $operators));
\arsort($operators);
$regex = [];
foreach ($operators as $operator => $length) {
// an operator that ends with a character must be followed by
// a whitespace or a parenthesis
if (\ctype_alpha($operator[$length - 1])) {
$r = \preg_quote($operator, '/') . '(?=[\\s()])';
} else {
$r = \preg_quote($operator, '/');
}
// an operator with a space can be any amount of whitespaces
$r = \preg_replace('/\\s+/', '\\s+', $r);
$regex[] = $r;
}
return '/' . \implode('|', $regex) . '/A';
}
protected function pushState($state)
{
$this->states[] = $this->state;
$this->state = $state;
}
protected function popState()
{
if (0 === \count($this->states)) {
throw new \LogicException('Cannot pop state without a previous state.');
}
$this->state = \array_pop($this->states);
}
}
\class_alias('WPML\\Core\\Twig\\Lexer', 'WPML\\Core\\Twig_Lexer');
File Manager Version 1.0, Coded By Lucas
Email: hehe@yahoo.com