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<?php
namespace NXP;
class nyaml
{
/**
* Состояния
*/
const PARSE_KEY = 0;
const PARSE_VALUE = 1;
const PARSE_INDENT = 2;
const PARSE_KEY_IN_QUOTE = 3;
const PARSE_KEY_IN_DQUOTE = 4;
const PARSE_VALUE_IN_QUOTE = 5;
const PARSE_VALUE_IN_DQUOTE = 6;
/**
* Термы
*/
const T_SPACE = 0;
const T_NEWLINE = 1;
const T_CHAR = 2;
const T_QUOTE = 3;
const T_DQUOTE = 4;
private $state = 0, $result = array();
/**
* Термы
* @var array
*/
private $terms = array(
self::T_SPACE => '/[\s|\t]/',
self::T_NEWLINE => '/[\n]/',
self::T_CHAR => '/[a-zA-Zа-яА-Я0-9]/',
self::T_QUOTE => '/[\']/',
self::T_DQUOTE => '/[\"]/'
);
/**
* Таблица переходов состояния
* @var array
*/
private $actions = array(
array(self::PARSE_KEY, self::T_CHAR, self::PARSE_KEY),
array(self::PARSE_KEY, self::T_SPACE, self::PARSE_VALUE),
array(self::PARSE_KEY, self::T_NEWLINE, self::PARSE_VALUE),
array(self::PARSE_VALUE, self::T_NEWLINE, self::PARSE_KEY),
array(self::PARSE_VALUE, self::T_SPACE, self::PARSE_VALUE),
array(self::PARSE_VALUE, self::T_CHAR, self::PARSE_VALUE),
array(self::PARSE_KEY, self::T_QUOTE, self::PARSE_KEY_IN_QUOTE),
array(self::PARSE_KEY, self::T_DQUOTE, self::PARSE_KEY_IN_DQUOTE),
array(self::PARSE_VALUE, self::T_QUOTE, self::PARSE_VALUE_IN_QUOTE),
array(self::PARSE_VALUE, self::T_DQUOTE, self::PARSE_VALUE_IN_DQUOTE),
array(self::PARSE_KEY_IN_QUOTE, self::T_QUOTE, self::PARSE_KEY),
array(self::PARSE_KEY_IN_DQUOTE, self::T_DQUOTE, self::PARSE_KEY),
array(self::PARSE_VALUE_IN_QUOTE, self::T_QUOTE, self::PARSE_VALUE),
array(self::PARSE_VALUE_IN_DQUOTE, self::T_DQUOTE, self::PARSE_VALUE),
array(self::PARSE_KEY_IN_QUOTE, self::T_CHAR, self::PARSE_KEY_IN_QUOTE),
array(self::PARSE_KEY_IN_DQUOTE, self::T_CHAR, self::PARSE_KEY_IN_DQUOTE),
array(self::PARSE_VALUE_IN_QUOTE, self::T_CHAR, self::PARSE_VALUE_IN_QUOTE),
array(self::PARSE_VALUE_IN_DQUOTE, self::T_CHAR, self::PARSE_VALUE_IN_DQUOTE),
array(self::PARSE_KEY_IN_QUOTE, self::T_SPACE, self::PARSE_KEY_IN_QUOTE),
array(self::PARSE_KEY_IN_DQUOTE, self::T_SPACE, self::PARSE_KEY_IN_DQUOTE),
array(self::PARSE_VALUE_IN_QUOTE, self::T_SPACE, self::PARSE_VALUE_IN_QUOTE),
array(self::PARSE_VALUE_IN_DQUOTE, self::T_SPACE, self::PARSE_VALUE_IN_DQUOTE),
array(self::PARSE_KEY_IN_QUOTE, self::T_NEWLINE, self::PARSE_KEY_IN_QUOTE),
array(self::PARSE_KEY_IN_DQUOTE, self::T_NEWLINE, self::PARSE_KEY_IN_DQUOTE),
array(self::PARSE_VALUE_IN_QUOTE, self::T_NEWLINE, self::PARSE_VALUE_IN_QUOTE),
array(self::PARSE_VALUE_IN_DQUOTE, self::T_NEWLINE, self::PARSE_VALUE_IN_DQUOTE),
);
public function file($fileName)
{
//Parse file
return $this->string(file_get_contents($fileName));
}
public function string($nyaml)
{
$result = array();
$key = '';
$value = '';
for ($i = 0; $i < strlen($nyaml); $i++) {
$char = substr($nyaml, $i, 1);
$oldState = $this->state;
$newState = $this->getState($char);
$this->state = $newState;
if (($newState == self::PARSE_KEY) && ($oldState == self::PARSE_VALUE)) {
$result[$key] = $value;
$key = '';
$value = '';
}
if (($newState == self::PARSE_KEY) && ($oldState == self::PARSE_KEY) && ($oldState != self::PARSE_VALUE_IN_QUOTE) && ($oldState != self::PARSE_VALUE_IN_DQUOTE)) {
$key.=$char;
}
if ( ($newState == self::PARSE_VALUE) && ($oldState != self::PARSE_VALUE_IN_QUOTE) && ($oldState != self::PARSE_VALUE_IN_DQUOTE) ) {
$value.=$char;
}
if (($newState == self::PARSE_KEY_IN_QUOTE) && ($oldState != self::PARSE_KEY)) {
$key.=$char;
}
if (($newState == self::PARSE_KEY_IN_DQUOTE) && ($oldState != self::PARSE_KEY)) {
$key.=$char;
}
if (($newState == self::PARSE_VALUE_IN_QUOTE) && ($oldState != self::PARSE_VALUE)) {
$value.=$char;
}
if (($newState == self::PARSE_VALUE_IN_DQUOTE) && ($oldState != self::PARSE_VALUE)) {
$value.=$char;
}
}
$result[$key] = $value;
return $result;
}
public function getState($char)
{
$currentTerm = null;
foreach ($this->terms as $key => $term) {
if (preg_match($term, $char)) {
$currentTerm = $key;
}
}
if ($currentTerm === null) {
throw new Exception('Parse error');
}
foreach ($this->actions as $action) {
if (( $action[0] == $this->state ) && ( $action[1] == $currentTerm )) {
return $action[2];
}
}
}
}
|
