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Current File : /nas/content/live/attorneyexperi/wp-content/plugins/ait-toolkit/lib/NNeon.php <?php
/**
* This file is part of the Nette Framework (http://nette.org)
*
* Copyright (c) 2004 David Grudl (http://davidgrudl.com)
*
* For the full copyright and license information, please view
* the file license.txt that was distributed with this source code.
* @package Nette
*/
/**
* Simple parser & generator for Nette Object Notation.
*
* @author David Grudl
* @version 1.0
*/
class NNeon
{
const BLOCK = 1;
/** @var array */
private static $patterns = array(
'
\'[^\'\n]*\' |
"(?: \\\\. | [^"\\\\\n] )*"
', // string
'
(?: [^#"\',:=[\]{}()\x00-\x20!`-] | [:-][^"\',\]})\s] )
(?:
[^,:=\]})(\x00-\x20]+ |
:(?! [\s,\]})] | $ ) |
[\ \t]+ [^#,:=\]})(\x00-\x20]
)*
', // literal / boolean / integer / float
'
[,:=[\]{}()-]
', // symbol
'?:\#.*', // comment
'\n[\t\ ]*', // new line + indent
'?:[\t\ ]+', // whitespace
);
/** @var string */
private static $re;
private static $brackets = array(
'[' => ']',
'{' => '}',
'(' => ')',
);
/** @var string */
private $input;
/** @var array */
public $tokens;
/** @var int */
private $n = 0;
/** @var bool */
private $indentTabs;
/**
* Returns the NEON representation of a value.
* @param mixed
* @param int
* @return string
*/
public static function encode($var, $options = NULL)
{
if ($var instanceof DateTime) {
return $var->format('Y-m-d H:i:s O');
} elseif ($var instanceof NNeonEntity) {
return self::encode($var->value) . '(' . substr(self::encode($var->attributes), 1, -1) . ')';
}
if (is_object($var)) {
$obj = $var; $var = array();
foreach ($obj as $k => $v) {
$var[$k] = $v;
}
}
if (is_array($var)) {
$isList = array_keys($var) === range(0, count($var) - 1);
$s = '';
if ($options & self::BLOCK) {
if (count($var) === 0){
return "[]";
}
foreach ($var as $k => $v) {
$v = self::encode($v, self::BLOCK);
$s .= ($isList ? '-' : self::encode($k) . ':')
. (strpos($v, "\n") === FALSE ? ' ' . $v : "\n\t" . str_replace("\n", "\n\t", $v))
. "\n";
continue;
}
return $s;
} else {
foreach ($var as $k => $v) {
$s .= ($isList ? '' : self::encode($k) . ': ') . self::encode($v) . ', ';
}
return ($isList ? '[' : '{') . substr($s, 0, -2) . ($isList ? ']' : '}');
}
} elseif (is_string($var) && !is_numeric($var)
&& !preg_match('~[\x00-\x1F]|^\d{4}|^(true|false|yes|no|on|off|null)\z~i', $var)
&& preg_match('~^' . self::$patterns[1] . '\z~x', $var) // 1 = literals
) {
return $var;
} elseif (is_float($var)) {
$var = var_export($var, TRUE);
return strpos($var, '.') === FALSE ? $var . '.0' : $var;
} else {
return json_encode($var);
}
}
/**
* Decodes a NEON string.
* @param string
* @return mixed
*/
public static function decode($input)
{
if (!is_string($input)) {
throw new InvalidArgumentException("Argument must be a string, " . gettype($input) . " given.");
}
if (!self::$re) {
self::$re = '~(' . implode(')|(', self::$patterns) . ')~Amix';
}
if (substr($input, 0, 3) === "\xEF\xBB\xBF") { // BOM
$input = substr($input, 3);
}
$parser = new self;
$parser->tokenize($input);
$res = $parser->parse(0);
while (isset($parser->tokens[$parser->n])) {
if ($parser->tokens[$parser->n][0] === "\n") {
$parser->n++;
} else {
$parser->error();
}
}
return $res;
}
private function tokenize($input)
{
$this->input = str_replace("\r", '', $input);
$this->tokens = preg_split(self::$re, $this->input, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE);
if ($code = preg_last_error()) {
throw new NeonException('PREG error', $code);
}
if ($this->tokens && !preg_match(self::$re, end($this->tokens))) {
$this->n = count($this->tokens) - 1;
$this->error();
}
}
/**
* @param int indentation (for block-parser)
* @param mixed
* @return array
*/
private function parse($indent = NULL, $result = NULL)
{
$inlineParser = $indent === NULL;
$value = $key = $object = NULL;
$hasValue = $hasKey = FALSE;
$tokens = $this->tokens;
$n = & $this->n;
$count = count($tokens);
for (; $n < $count; $n++) {
$t = $tokens[$n];
if ($t === ',') { // ArrayEntry separator
if ((!$hasKey && !$hasValue) || !$inlineParser) {
$this->error();
}
$this->addValue($result, $hasKey, $key, $hasValue ? $value : NULL);
$hasKey = $hasValue = FALSE;
} elseif ($t === ':' || $t === '=') { // KeyValuePair separator
if ($hasKey || !$hasValue) {
$this->error();
}
if (is_array($value) || is_object($value)) {
$this->error('Unacceptable key');
}
$key = (string) $value;
$hasKey = TRUE;
$hasValue = FALSE;
} elseif ($t === '-') { // BlockArray bullet
if ($hasKey || $hasValue || $inlineParser) {
$this->error();
}
$key = NULL;
$hasKey = TRUE;
} elseif (isset(self::$brackets[$t])) { // Opening bracket [ ( {
if ($hasValue) {
if ($t !== '(') {
$this->error();
}
$n++;
$entity = new NNeonEntity;
$entity->value = $value;
$entity->attributes = $this->parse(NULL, array());
$value = $entity;
} else {
$n++;
$value = $this->parse(NULL, array());
}
$hasValue = TRUE;
if (!isset($tokens[$n]) || $tokens[$n] !== self::$brackets[$t]) { // unexpected type of bracket or block-parser
$this->error();
}
} elseif ($t === ']' || $t === '}' || $t === ')') { // Closing bracket ] ) }
if (!$inlineParser) {
$this->error();
}
break;
} elseif ($t[0] === "\n") { // Indent
if ($inlineParser) {
if ($hasKey || $hasValue) {
$this->addValue($result, $hasKey, $key, $hasValue ? $value : NULL);
$hasKey = $hasValue = FALSE;
}
} else {
while (isset($tokens[$n+1]) && $tokens[$n+1][0] === "\n") $n++; // skip to last indent
if (!isset($tokens[$n+1])) {
break;
}
$newIndent = strlen($tokens[$n]) - 1;
if ($indent === NULL) { // first iteration
$indent = $newIndent;
}
if ($newIndent) {
if ($this->indentTabs === NULL) {
$this->indentTabs = $tokens[$n][1] === "\t";
}
if (strpos($tokens[$n], $this->indentTabs ? ' ' : "\t")) {
$n++;
$this->error('Either tabs or spaces may be used as indenting chars, but not both.');
}
}
if ($newIndent > $indent) { // open new block-array or hash
if ($hasValue || !$hasKey) {
$n++;
$this->error('Unexpected indentation.');
} else {
$this->addValue($result, $key !== NULL, $key, $this->parse($newIndent));
}
$newIndent = isset($tokens[$n]) ? strlen($tokens[$n]) - 1 : 0;
$hasKey = FALSE;
} else {
if ($hasValue && !$hasKey) { // block items must have "key"; NULL key means list item
break;
} elseif ($hasKey) {
$this->addValue($result, $key !== NULL, $key, $hasValue ? $value : NULL);
$hasKey = $hasValue = FALSE;
}
}
if ($newIndent < $indent) { // close block
return $result; // block parser exit point
}
}
} else { // Value
if ($hasValue) {
$this->error();
}
static $consts = array(
'true' => TRUE, 'True' => TRUE, 'TRUE' => TRUE, 'yes' => TRUE, 'Yes' => TRUE, 'YES' => TRUE, 'on' => TRUE, 'On' => TRUE, 'ON' => TRUE,
'false' => FALSE, 'False' => FALSE, 'FALSE' => FALSE, 'no' => FALSE, 'No' => FALSE, 'NO' => FALSE, 'off' => FALSE, 'Off' => FALSE, 'OFF' => FALSE,
);
if ($t[0] === '"') {
$value = preg_replace_callback('#\\\\(?:u[0-9a-f]{4}|x[0-9a-f]{2}|.)#i', array($this, 'cbString'), substr($t, 1, -1));
} elseif ($t[0] === "'") {
$value = substr($t, 1, -1);
} elseif (isset($consts[$t])) {
$value = $consts[$t];
} elseif ($t === 'null' || $t === 'Null' || $t === 'NULL') {
$value = NULL;
} elseif (is_numeric($t)) {
$value = $t * 1;
} elseif (preg_match('#\d\d\d\d-\d\d?-\d\d?(?:(?:[Tt]| +)\d\d?:\d\d:\d\d(?:\.\d*)? *(?:Z|[-+]\d\d?(?::\d\d)?)?)?\z#A', $t)) {
$value = new DateTime($t);
} else { // literal
$value = $t;
}
$hasValue = TRUE;
}
}
if ($inlineParser) {
if ($hasKey || $hasValue) {
$this->addValue($result, $hasKey, $key, $hasValue ? $value : NULL);
}
} else {
if ($hasValue && !$hasKey) { // block items must have "key"
if ($result === NULL) {
$result = $value; // simple value parser
} else {
$this->error();
}
} elseif ($hasKey) {
$this->addValue($result, $key !== NULL, $key, $hasValue ? $value : NULL);
}
}
return $result;
}
private function addValue(&$result, $hasKey, $key, $value)
{
if ($hasKey) {
if ($result && array_key_exists($key, $result)) {
$this->error("Duplicated key '$key'");
}
$result[$key] = $value;
} else {
$result[] = $value;
}
}
private function cbString($m)
{
static $mapping = array('t' => "\t", 'n' => "\n", 'r' => "\r", 'f' => "\x0C", 'b' => "\x08", '"' => '"', '\\' => '\\', '/' => '/', '_' => "\xc2\xa0");
$sq = $m[0];
if (isset($mapping[$sq[1]])) {
return $mapping[$sq[1]];
} elseif ($sq[1] === 'u' && strlen($sq) === 6) {
return iconv('UTF-32BE', 'UTF-8//IGNORE', pack('N', hexdec(substr($sq, 2))));
} elseif ($sq[1] === 'x' && strlen($sq) === 4) {
return chr(hexdec(substr($sq, 2)));
} else {
$this->error("Invalid escaping sequence $sq");
}
}
private function error($message = "Unexpected '%s'")
{
$tokens = preg_split(self::$re, $this->input, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_OFFSET_CAPTURE | PREG_SPLIT_DELIM_CAPTURE);
$offset = isset($tokens[$this->n]) ? $tokens[$this->n][1] : strlen($this->input);
$line = $offset ? substr_count($this->input, "\n", 0, $offset) + 1 : 1;
$col = $offset - strrpos(substr($this->input, 0, $offset), "\n");
$token = isset($this->tokens[$this->n]) ? str_replace("\n", '<new line>', substr($this->tokens[$this->n], 0, 40)) : 'end';
throw new NeonException(str_replace('%s', $token, $message) . " on line $line, column $col.");
}
}
/**
* Representation of 'foo(bar=1)' literal
*/
class NNeonEntity extends stdClass
{
public $value;
public $attributes;
}
/**
* The exception that indicates error of NEON decoding.
*/
class NNeonException extends Exception
{
}
