s9e / RegexpBuilder

src/Input/Utf8.php

Indentation +54 added lines, -54 removed lines

@@ -11,62 +11,62 @@
 
 class Utf8 implements InputInterface
 {
-	/**
-	* {@inheritdoc}
-	*/
-	public function split($string)
-	{
-		if (preg_match_all('(.)us', $string, $matches) === false)
-		{
-			throw new InvalidArgumentException('Invalid UTF-8 string');
-		}
+    /**
+     * {@inheritdoc}
+     */
+    public function split($string)
+    {
+        if (preg_match_all('(.)us', $string, $matches) === false)
+        {
+            throw new InvalidArgumentException('Invalid UTF-8 string');
+        }
 
-		return $this->charsToCodepoints($matches[0]);
-	}
+        return $this->charsToCodepoints($matches[0]);
+    }
 
-	/**
-	* Convert a list of UTF-8 characters to a list of Unicode codepoint
-	*
-	* @param  string[]  $chars
-	* @return integer[]
-	*/
-	protected function charsToCodepoints(array $chars)
-	{
-		return array_map([$this, 'cp'], $chars);
-	}
+    /**
+     * Convert a list of UTF-8 characters to a list of Unicode codepoint
+     *
+     * @param  string[]  $chars
+     * @return integer[]
+     */
+    protected function charsToCodepoints(array $chars)
+    {
+        return array_map([$this, 'cp'], $chars);
+    }
 
-	/**
-	* Compute and return the Unicode codepoint for given UTF-8 char
-	*
-	* @param  string $char UTF-8 char
-	* @return integer
-	*/
-	protected function cp($char)
-	{
-		$size = strlen($char);
-		if ($size === 1)
-		{
-			$cp = ord($char);
-		}
-		elseif ($size === 2)
-		{
-			$cp = ((ord($char[0]) & 0b00011111) << 6)
-			    |  (ord($char[1]) & 0b00111111);
-		}
-		elseif ($size === 3)
-		{
-			$cp = ((ord($char[0]) & 0b00001111) << 12)
-			    | ((ord($char[1]) & 0b00111111) << 6)
-			    |  (ord($char[2]) & 0b00111111);
-		}
-		else
-		{
-			$cp = ((ord($char[0]) & 0b00000111) << 18)
-			    | ((ord($char[1]) & 0b00111111) << 12)
-			    | ((ord($char[2]) & 0b00111111) << 6)
-			    |  (ord($char[3]) & 0b00111111);
-		}
+    /**
+     * Compute and return the Unicode codepoint for given UTF-8 char
+     *
+     * @param  string $char UTF-8 char
+     * @return integer
+     */
+    protected function cp($char)
+    {
+        $size = strlen($char);
+        if ($size === 1)
+        {
+            $cp = ord($char);
+        }
+        elseif ($size === 2)
+        {
+            $cp = ((ord($char[0]) & 0b00011111) << 6)
+                |  (ord($char[1]) & 0b00111111);
+        }
+        elseif ($size === 3)
+        {
+            $cp = ((ord($char[0]) & 0b00001111) << 12)
+                | ((ord($char[1]) & 0b00111111) << 6)
+                |  (ord($char[2]) & 0b00111111);
+        }
+        else
+        {
+            $cp = ((ord($char[0]) & 0b00000111) << 18)
+                | ((ord($char[1]) & 0b00111111) << 12)
+                | ((ord($char[2]) & 0b00111111) << 6)
+                |  (ord($char[3]) & 0b00111111);
+        }
 
-		return $cp;
-	}
+        return $cp;
+    }
 }
\ No newline at end of file

src/Builder.php

Indentation +90 added lines, -90 removed lines

@@ -18,94 +18,94 @@
 
 class Builder
 {
-	/**
-	* @var InputInterface
-	*/
-	protected $input;
-
-	/**
-	* @var Runner
-	*/
-	protected $runner;
-
-	/**
-	* @var Serializer
-	*/
-	protected $serializer;
-
-	/**
-	* @param array $config
-	*/
-	public function __construct(array $config = [])
-	{
-		$config = $this->getConfig($config);
-
-		$this->input      = $config['input'];
-		$this->runner     = $config['runner'];
-		$this->serializer = new Serializer($config['output'], $config['escaper']);
-	}
-
-	/**
-	* Build and return a regular expression that matches all of the given strings
-	*
-	* @param  string[] $strings Literal strings to be matched
-	* @return string            Regular expression (without delimiters)
-	*/
-	public function build(array $strings)
-	{
-		$strings = array_unique($strings);
-		if ($strings === [''])
-		{
-			return '';
-		}
-		sort($strings);
-
-		$strings = $this->splitStrings($strings);
-		$strings = $this->runner->run($strings);
-
-		return $this->serializer->serializeStrings($strings);
-	}
-
-	/**
-	* Build the full config array based on given input
-	*
-	* @param  array $config Sparse config
-	* @return array         Full config
-	*/
-	protected function getConfig(array $config)
-	{
-		$config += [
-			'delimiter' => '/',
-			'input'     => 'Bytes',
-			'output'    => 'Bytes'
-		];
-		$config['escaper'] = new Escaper($config['delimiter']);
-
-		$className = __NAMESPACE__ . '\\Input\\' . $config['input'];
-		$config['input'] = new $className;
-
-		$className = __NAMESPACE__ . '\\Output\\' . $config['output'];
-		$config['output'] = new $className;
-
-		$config['runner'] = new Runner;
-		$config['runner']->addPass(new MergePrefix);
-		$config['runner']->addPass(new GroupSingleCharacters);
-		$config['runner']->addPass(new Recurse($config['runner']));
-		$config['runner']->addPass(new PromoteSingleStrings);
-		$config['runner']->addPass(new MergeSuffix);
-		$config['runner']->addPass(new CoalesceSingleCharacterPrefix);
-
-		return $config;
-	}
-
-	/**
-	* Split all given strings by character
-	*
-	* @param  string[] $strings List of strings
-	* @return array[]           List of arrays
-	*/
-	protected function splitStrings(array $strings)
-	{
-		return array_map([$this->input, 'split'], $strings);
-	}
+    /**
+     * @var InputInterface
+     */
+    protected $input;
+
+    /**
+     * @var Runner
+     */
+    protected $runner;
+
+    /**
+     * @var Serializer
+     */
+    protected $serializer;
+
+    /**
+     * @param array $config
+     */
+    public function __construct(array $config = [])
+    {
+        $config = $this->getConfig($config);
+
+        $this->input      = $config['input'];
+        $this->runner     = $config['runner'];
+        $this->serializer = new Serializer($config['output'], $config['escaper']);
+    }
+
+    /**
+     * Build and return a regular expression that matches all of the given strings
+     *
+     * @param  string[] $strings Literal strings to be matched
+     * @return string            Regular expression (without delimiters)
+     */
+    public function build(array $strings)
+    {
+        $strings = array_unique($strings);
+        if ($strings === [''])
+        {
+            return '';
+        }
+        sort($strings);
+
+        $strings = $this->splitStrings($strings);
+        $strings = $this->runner->run($strings);
+
+        return $this->serializer->serializeStrings($strings);
+    }
+
+    /**
+     * Build the full config array based on given input
+     *
+     * @param  array $config Sparse config
+     * @return array         Full config
+     */
+    protected function getConfig(array $config)
+    {
+        $config += [
+            'delimiter' => '/',
+            'input'     => 'Bytes',
+            'output'    => 'Bytes'
+        ];
+        $config['escaper'] = new Escaper($config['delimiter']);
+
+        $className = __NAMESPACE__ . '\\Input\\' . $config['input'];
+        $config['input'] = new $className;
+
+        $className = __NAMESPACE__ . '\\Output\\' . $config['output'];
+        $config['output'] = new $className;
+
+        $config['runner'] = new Runner;
+        $config['runner']->addPass(new MergePrefix);
+        $config['runner']->addPass(new GroupSingleCharacters);
+        $config['runner']->addPass(new Recurse($config['runner']));
+        $config['runner']->addPass(new PromoteSingleStrings);
+        $config['runner']->addPass(new MergeSuffix);
+        $config['runner']->addPass(new CoalesceSingleCharacterPrefix);
+
+        return $config;
+    }
+
+    /**
+     * Split all given strings by character
+     *
+     * @param  string[] $strings List of strings
+     * @return array[]           List of arrays
+     */
+    protected function splitStrings(array $strings)
+    {
+        return array_map([$this->input, 'split'], $strings);
+    }
 }
\ No newline at end of file

src/Runner.php

Indentation +28 added lines, -28 removed lines

@@ -11,35 +11,35 @@
 
 class Runner
 {
-	/**
-	* @var PassInterface[]
-	*/
-	protected $passes = [];
+    /**
+     * @var PassInterface[]
+     */
+    protected $passes = [];
 
-	/**
-	* Add a pass to the list
-	*
-	* @param  PassInterface $pass
-	* @return void
-	*/
-	public function addPass(PassInterface $pass)
-	{
-		$this->passes[] = $pass;
-	}
+    /**
+     * Add a pass to the list
+     *
+     * @param  PassInterface $pass
+     * @return void
+     */
+    public function addPass(PassInterface $pass)
+    {
+        $this->passes[] = $pass;
+    }
 
-	/**
-	* Run all passes on the list of strings
-	*
-	* @param  array[] $strings
-	* @return array[]
-	*/
-	public function run(array $strings)
-	{
-		foreach ($this->passes as $pass)
-		{
-			$strings = $pass->run($strings);
-		}
+    /**
+     * Run all passes on the list of strings
+     *
+     * @param  array[] $strings
+     * @return array[]
+     */
+    public function run(array $strings)
+    {
+        foreach ($this->passes as $pass)
+        {
+            $strings = $pass->run($strings);
+        }
 
-		return $strings;
-	}
+        return $strings;
+    }
 }
\ No newline at end of file

src/Output/OutputInterface.php

Indentation +7 added lines, -7 removed lines

@@ -9,11 +9,11 @@
 
 interface OutputInterface
 {
-	/**
-	* Serialize a value into a character
-	*
-	* @param  integer $value
-	* @return string
-	*/
-	public function output($value);
+    /**
+     * Serialize a value into a character
+     *
+     * @param  integer $value
+     * @return string
+     */
+    public function output($value);
 }
\ No newline at end of file

src/Serializer.php

Indentation +185 added lines, -185 removed lines

@@ -11,189 +11,189 @@
 
 class Serializer
 {
-	/**
-	* @var Escaper
-	*/
-	protected $escaper;
-
-	/**
-	* @var OutputInterface
-	*/
-	protected $output;
-
-	/**
-	* @param OutputInterface $output
-	* @param Escaper         $escaper
-	*/
-	public function __construct(OutputInterface $output, Escaper $escaper)
-	{
-		$this->escaper = $escaper;
-		$this->output  = $output;
-	}
-
-	/**
-	* Serialize given strings into a regular expression
-	*
-	* @param  array[] $strings
-	* @return string
-	*/
-	public function serializeStrings(array $strings)
-	{
-		$info = $this->analyzeStrings($strings);
-		$alternations = $this->buildAlternations($info);
-		$expr = implode('|', $alternations);
-
-		if (count($alternations) > 1 || $this->isOneOptionalString($info))
-		{
-			$expr = '(?:' . $expr . ')';
-		}
-
-		return $expr . $info['quantifier'];
-	}
-
-	/**
-	* Analyze given strings to determine how to serialize them
-	*
-	* The returned array may contains any of the following elements:
-	*
-	*  - (string) quantifier Either '' or '?'
-	*  - (array)  chars      List of values from single-char strings
-	*  - (array)  strings    List of multi-char strings
-	*
-	* @param  array[] $strings
-	* @return array
-	*/
-	protected function analyzeStrings(array $strings)
-	{
-		$info  = ['quantifier' => ''];
-		$chars = [];
-		foreach ($strings as $k => $string)
-		{
-			if (empty($string))
-			{
-				$info['quantifier'] = '?';
-				unset($strings[$k]);
-			}
-			elseif (!isset($string[1]))
-			{
-				$chars[$k] = $string[0];
-			}
-		}
-
-		if (count($chars) > 1)
-		{
-			$info['chars'] = array_values($chars);
-			$strings = array_diff_key($strings, $chars);
-		}
-
-		$info['strings'] = array_values($strings);
-
-		return $info;
-	}
-
-	/**
-	* Build the list of alternations based on given info
-	*
-	* @param  array    $info
-	* @return string[]
-	*/
-	protected function buildAlternations(array $info)
-	{
-		$alternations = [];
-		if (!empty($info['chars']))
-		{
-			$alternations[] = $this->serializeCharacterClass($info['chars']);
-		}
-		foreach ($info['strings'] as $string)
-		{
-			$alternations[] = $this->serializeString($string);
-		}
-
-		return $alternations;
-	}
-
-	/**
-	* Get the list of ranges that cover all given values
-	*
-	* @param  integer[] $values Ordered list of values
-	* @return array[]           List of ranges in the form [start, end]
-	*/
-	protected function getRanges(array $values)
-	{
-		$i      = 0;
-		$cnt    = count($values);
-		$start  = $values[0];
-		$end    = $start;
-		$ranges = [];
-		while (++$i < $cnt)
-		{
-			if ($values[$i] === $end + 1)
-			{
-				++$end;
-			}
-			else
-			{
-				$ranges[] = [$start, $end];
-				$start = $end = $values[$i];
-			}
-		}
-		$ranges[] = [$start, $end];
-
-		return $ranges;
-	}
-
-	/**
-	* Test whether a string is optional and has more than one character
-	*
-	* @param  array $info
-	* @return bool
-	*/
-	protected function isOneOptionalString(array $info)
-	{
-		// Test whether the first string has a quantifier and more than one element
-		return (!empty($info['quantifier']) && isset($info['strings'][0][1]));
-	}
-
-	/**
-	* Serialize a given list of values into a character class
-	*
-	* @param  integer[] $values
-	* @return string
-	*/
-	protected function serializeCharacterClass(array $values)
-	{
-		$expr = '[';
-		foreach ($this->getRanges($values) as list($start, $end))
-		{
-			$expr .= $this->escaper->escapeCharacterClass($this->output->output($start));
-			if ($end > $start)
-			{
-				if ($end > $start + 1)
-				{
-					$expr .= '-';
-				}
-				$expr .= $this->escaper->escapeCharacterClass($this->output->output($end));
-			}
-		}
-		$expr .= ']';
-
-		return $expr;
-	}
-
-	/**
-	* Serialize a given string into a regular expression
-	*
-	* @param  array  $string
-	* @return string
-	*/
-	protected function serializeString(array $string)
-	{
-		$expr = '';
-		foreach ($string as $element)
-		{
-			$expr .= (is_array($element)) ? $this->serializeStrings($element) : $this->escaper->escapeLiteral($this->output->output($element));
-		}
-
-		return $expr;
-	}
+    /**
+     * @var Escaper
+     */
+    protected $escaper;
+
+    /**
+     * @var OutputInterface
+     */
+    protected $output;
+
+    /**
+     * @param OutputInterface $output
+     * @param Escaper         $escaper
+     */
+    public function __construct(OutputInterface $output, Escaper $escaper)
+    {
+        $this->escaper = $escaper;
+        $this->output  = $output;
+    }
+
+    /**
+     * Serialize given strings into a regular expression
+     *
+     * @param  array[] $strings
+     * @return string
+     */
+    public function serializeStrings(array $strings)
+    {
+        $info = $this->analyzeStrings($strings);
+        $alternations = $this->buildAlternations($info);
+        $expr = implode('|', $alternations);
+
+        if (count($alternations) > 1 || $this->isOneOptionalString($info))
+        {
+            $expr = '(?:' . $expr . ')';
+        }
+
+        return $expr . $info['quantifier'];
+    }
+
+    /**
+     * Analyze given strings to determine how to serialize them
+     *
+     * The returned array may contains any of the following elements:
+     *
+     *  - (string) quantifier Either '' or '?'
+     *  - (array)  chars      List of values from single-char strings
+     *  - (array)  strings    List of multi-char strings
+     *
+     * @param  array[] $strings
+     * @return array
+     */
+    protected function analyzeStrings(array $strings)
+    {
+        $info  = ['quantifier' => ''];
+        $chars = [];
+        foreach ($strings as $k => $string)
+        {
+            if (empty($string))
+            {
+                $info['quantifier'] = '?';
+                unset($strings[$k]);
+            }
+            elseif (!isset($string[1]))
+            {
+                $chars[$k] = $string[0];
+            }
+        }
+
+        if (count($chars) > 1)
+        {
+            $info['chars'] = array_values($chars);
+            $strings = array_diff_key($strings, $chars);
+        }
+
+        $info['strings'] = array_values($strings);
+
+        return $info;
+    }
+
+    /**
+     * Build the list of alternations based on given info
+     *
+     * @param  array    $info
+     * @return string[]
+     */
+    protected function buildAlternations(array $info)
+    {
+        $alternations = [];
+        if (!empty($info['chars']))
+        {
+            $alternations[] = $this->serializeCharacterClass($info['chars']);
+        }
+        foreach ($info['strings'] as $string)
+        {
+            $alternations[] = $this->serializeString($string);
+        }
+
+        return $alternations;
+    }
+
+    /**
+     * Get the list of ranges that cover all given values
+     *
+     * @param  integer[] $values Ordered list of values
+     * @return array[]           List of ranges in the form [start, end]
+     */
+    protected function getRanges(array $values)
+    {
+        $i      = 0;
+        $cnt    = count($values);
+        $start  = $values[0];
+        $end    = $start;
+        $ranges = [];
+        while (++$i < $cnt)
+        {
+            if ($values[$i] === $end + 1)
+            {
+                ++$end;
+            }
+            else
+            {
+                $ranges[] = [$start, $end];
+                $start = $end = $values[$i];
+            }
+        }
+        $ranges[] = [$start, $end];
+
+        return $ranges;
+    }
+
+    /**
+     * Test whether a string is optional and has more than one character
+     *
+     * @param  array $info
+     * @return bool
+     */
+    protected function isOneOptionalString(array $info)
+    {
+        // Test whether the first string has a quantifier and more than one element
+        return (!empty($info['quantifier']) && isset($info['strings'][0][1]));
+    }
+
+    /**
+     * Serialize a given list of values into a character class
+     *
+     * @param  integer[] $values
+     * @return string
+     */
+    protected function serializeCharacterClass(array $values)
+    {
+        $expr = '[';
+        foreach ($this->getRanges($values) as list($start, $end))
+        {
+            $expr .= $this->escaper->escapeCharacterClass($this->output->output($start));
+            if ($end > $start)
+            {
+                if ($end > $start + 1)
+                {
+                    $expr .= '-';
+                }
+                $expr .= $this->escaper->escapeCharacterClass($this->output->output($end));
+            }
+        }
+        $expr .= ']';
+
+        return $expr;
+    }
+
+    /**
+     * Serialize a given string into a regular expression
+     *
+     * @param  array  $string
+     * @return string
+     */
+    protected function serializeString(array $string)
+    {
+        $expr = '';
+        foreach ($string as $element)
+        {
+            $expr .= (is_array($element)) ? $this->serializeStrings($element) : $this->escaper->escapeLiteral($this->output->output($element));
+        }
+
+        return $expr;
+    }
 }
\ No newline at end of file

src/Output/PrintableAscii.php

Indentation +49 added lines, -49 removed lines

@@ -9,53 +9,53 @@
 
 abstract class PrintableAscii extends BaseImplementation
 {
-	/**
-	* {@inheritdoc}
-	*/
-	protected function outputValidValue($value)
-	{
-		if ($value < 32)
-		{
-			return $this->escapeControlCode($value);
-		}
-
-		if ($value < 127)
-		{
-			return chr($value);
-		}
-
-		return ($value > 255) ? $this->escapeUnicode($value) : $this->escapeAscii($value);
-	}
-
-	/**
-	* Escape given ASCII codepoint
-	*
-	* @param  integer $cp
-	* @return string
-	*/
-	protected function escapeAscii($cp)
-	{
-		return '\\x' . sprintf('%02X', $cp);
-	}
-
-	/**
-	* Escape given control code
-	*
-	* @param  integer $cp
-	* @return string
-	*/
-	protected function escapeControlCode($cp)
-	{
-		$table = [9 => '\\t', 10 => '\\n', 13 => '\\r'];
-
-		return (isset($table[$cp])) ? $table[$cp] : $this->escapeAscii($cp);
-	}
-
-	/**
-	* Output the representation of a unicode character
-	*
-	* @param  integer $cp Unicode codepoint
-	* @return string
-	*/
-	abstract protected function escapeUnicode($cp);
+    /**
+     * {@inheritdoc}
+     */
+    protected function outputValidValue($value)
+    {
+        if ($value < 32)
+        {
+            return $this->escapeControlCode($value);
+        }
+
+        if ($value < 127)
+        {
+            return chr($value);
+        }
+
+        return ($value > 255) ? $this->escapeUnicode($value) : $this->escapeAscii($value);
+    }
+
+    /**
+     * Escape given ASCII codepoint
+     *
+     * @param  integer $cp
+     * @return string
+     */
+    protected function escapeAscii($cp)
+    {
+        return '\\x' . sprintf('%02X', $cp);
+    }
+
+    /**
+     * Escape given control code
+     *
+     * @param  integer $cp
+     * @return string
+     */
+    protected function escapeControlCode($cp)
+    {
+        $table = [9 => '\\t', 10 => '\\n', 13 => '\\r'];
+
+        return (isset($table[$cp])) ? $table[$cp] : $this->escapeAscii($cp);
+    }
+
+    /**
+     * Output the representation of a unicode character
+     *
+     * @param  integer $cp Unicode codepoint
+     * @return string
+     */
+    abstract protected function escapeUnicode($cp);
 }
\ No newline at end of file

src/Output/JavaScript.php

Indentation +9 added lines, -9 removed lines

@@ -9,14 +9,14 @@
 
 class JavaScript extends PrintableAscii
 {
-	/** {@inheritdoc} */
-	protected $maxValue = 0xFFFF;
+    /** {@inheritdoc} */
+    protected $maxValue = 0xFFFF;
 
-	/**
-	* {@inheritdoc}
-	*/
-	protected function escapeUnicode($cp)
-	{
-		return sprintf('\\u%04X', $cp);
-	}
+    /**
+     * {@inheritdoc}
+     */
+    protected function escapeUnicode($cp)
+    {
+        return sprintf('\\u%04X', $cp);
+    }
 }
\ No newline at end of file

src/Output/Utf8.php

Indentation +26 added lines, -26 removed lines

@@ -9,31 +9,31 @@
 
 class Utf8 extends BaseImplementation
 {
-	/** {@inheritdoc} */
-	protected $maxValue = 0x10FFFF;
+    /** {@inheritdoc} */
+    protected $maxValue = 0x10FFFF;
 
-	/**
-	* {@inheritdoc}
-	*/
-	protected function outputValidValue($value)
-	{
-		if ($value < 0x80)
-		{
-			return chr($value);
-		}
-		if ($value < 0x800)
-		{
-			return chr(0xC0 | ($value >> 6)) . chr(0x80 | ($value & 0x3F));
-		}
-		if ($value < 0x10000)
-		{
-			return chr(0xE0 | ($value >> 12))
-			     . chr(0x80 | (($value >> 6) & 0x3F))
-			     . chr(0x80 | ($value & 0x3F));
-		}
-		return chr(0xF0 | ($value >> 18))
-		     . chr(0x80 | (($value >> 12) & 0x3F))
-		     . chr(0x80 | (($value >> 6) & 0x3F))
-		     . chr(0x80 | ($value & 0x3F));
-	}
+    /**
+     * {@inheritdoc}
+     */
+    protected function outputValidValue($value)
+    {
+        if ($value < 0x80)
+        {
+            return chr($value);
+        }
+        if ($value < 0x800)
+        {
+            return chr(0xC0 | ($value >> 6)) . chr(0x80 | ($value & 0x3F));
+        }
+        if ($value < 0x10000)
+        {
+            return chr(0xE0 | ($value >> 12))
+                    . chr(0x80 | (($value >> 6) & 0x3F))
+                    . chr(0x80 | ($value & 0x3F));
+        }
+        return chr(0xF0 | ($value >> 18))
+                . chr(0x80 | (($value >> 12) & 0x3F))
+                . chr(0x80 | (($value >> 6) & 0x3F))
+                . chr(0x80 | ($value & 0x3F));
+    }
 }
\ No newline at end of file

src/Output/Bytes.php

Indentation +9 added lines, -9 removed lines

@@ -9,14 +9,14 @@
 
 class Bytes extends BaseImplementation
 {
-	/** {@inheritdoc} */
-	protected $maxValue = 255;
+    /** {@inheritdoc} */
+    protected $maxValue = 255;
 
-	/**
-	* {@inheritdoc}
-	*/
-	protected function outputValidValue($value)
-	{
-		return chr($value);
-	}
+    /**
+     * {@inheritdoc}
+     */
+    protected function outputValidValue($value)
+    {
+        return chr($value);
+    }
 }
\ No newline at end of file