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EscapeImplicitBackslashesFixer.php
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/
EscapeImplicitBackslashesFixer.php
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<?php
declare(strict_types=1);
/*
* This file is part of PHP CS Fixer.
*
* (c) Fabien Potencier <fabien@symfony.com>
* Dariusz Rumiński <dariusz.ruminski@gmail.com>
*
* This source file is subject to the MIT license that is bundled
* with this source code in the file LICENSE.
*/
namespace PhpCsFixer\Fixer\StringNotation;
use PhpCsFixer\AbstractProxyFixer;
use PhpCsFixer\Fixer\ConfigurableFixerInterface;
use PhpCsFixer\Fixer\DeprecatedFixerInterface;
use PhpCsFixer\FixerConfiguration\FixerConfigurationResolver;
use PhpCsFixer\FixerConfiguration\FixerConfigurationResolverInterface;
use PhpCsFixer\FixerConfiguration\FixerOptionBuilder;
use PhpCsFixer\FixerDefinition\CodeSample;
use PhpCsFixer\FixerDefinition\FixerDefinition;
use PhpCsFixer\FixerDefinition\FixerDefinitionInterface;
/**
* @author Filippo Tessarotto <zoeslam@gmail.com>
* @author Michael Vorisek <https://github.com/mvorisek>
*
* @deprecated Use `string_implicit_backslashes` with config: ['single_quoted' => 'ignore', 'double_quoted' => 'escape', 'heredoc' => 'escape'] (default)
*/
final class EscapeImplicitBackslashesFixer extends AbstractProxyFixer implements ConfigurableFixerInterface, DeprecatedFixerInterface
{
public function getSuccessorsNames(): array
{
return array_keys($this->proxyFixers);
}
public function getDefinition(): FixerDefinitionInterface
{
$codeSample = <<<'EOF'
<?php
$singleQuoted = 'String with \" and My\Prefix\\';
$doubleQuoted = "Interpret my \n but not my \a";
$hereDoc = <<<HEREDOC
Interpret my \100 but not my \999
HEREDOC;
EOF;
return new FixerDefinition(
'Escape implicit backslashes in strings and heredocs to ease the understanding of which are special chars interpreted by PHP and which not.',
[
new CodeSample($codeSample),
new CodeSample(
$codeSample,
['single_quoted' => true]
),
new CodeSample(
$codeSample,
['double_quoted' => false]
),
new CodeSample(
$codeSample,
['heredoc_syntax' => false]
),
],
'In PHP double-quoted strings and heredocs some chars like `n`, `$` or `u` have special meanings if preceded by a backslash '
.'(and some are special only if followed by other special chars), while a backslash preceding other chars are interpreted like a plain '
.'backslash. The precise list of those special chars is hard to remember and to identify quickly: this fixer escapes backslashes '
."that do not start a special interpretation with the char after them.\n"
.'It is possible to fix also single-quoted strings: in this case there is no special chars apart from single-quote and backslash '
.'itself, so the fixer simply ensure that all backslashes are escaped. Both single and double backslashes are allowed in single-quoted '
.'strings, so the purpose in this context is mainly to have a uniformed way to have them written all over the codebase.'
);
}
/**
* {@inheritdoc}
*
* Must run before HeredocToNowdocFixer, SingleQuoteFixer.
* Must run after BacktickToShellExecFixer, MultilineStringToHeredocFixer.
*/
public function getPriority(): int
{
return parent::getPriority();
}
public function configure(array $configuration): void
{
parent::configure($configuration);
/** @var StringImplicitBackslashesFixer */
$stringImplicitBackslashesFixer = $this->proxyFixers['string_implicit_backslashes'];
$stringImplicitBackslashesFixer->configure([
'single_quoted' => true === $this->configuration['single_quoted'] ? 'escape' : 'ignore',
'double_quoted' => true === $this->configuration['double_quoted'] ? 'escape' : 'ignore',
'heredoc' => true === $this->configuration['heredoc_syntax'] ? 'escape' : 'ignore',
]);
}
protected function createProxyFixers(): array
{
$stringImplicitBackslashesFixer = new StringImplicitBackslashesFixer();
$stringImplicitBackslashesFixer->configure([
'single_quoted' => 'ignore',
'double_quoted' => 'escape',
'heredoc' => 'escape',
]);
return [
$stringImplicitBackslashesFixer,
];
}
protected function createConfigurationDefinition(): FixerConfigurationResolverInterface
{
return new FixerConfigurationResolver([
(new FixerOptionBuilder('single_quoted', 'Whether to fix single-quoted strings.'))
->setAllowedTypes(['bool'])
->setDefault(false)
->getOption(),
(new FixerOptionBuilder('double_quoted', 'Whether to fix double-quoted strings.'))
->setAllowedTypes(['bool'])
->setDefault(true)
->getOption(),
(new FixerOptionBuilder('heredoc_syntax', 'Whether to fix heredoc syntax.'))
->setAllowedTypes(['bool'])
->setDefault(true)
->getOption(),
]);
}
}