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   1  <?php
   2  
   3  /*
   4  * @package   s9e\TextFormatter
   5  * @copyright Copyright (c) 2010-2019 The s9e Authors
   6  * @license   http://www.opensource.org/licenses/mit-license.php The MIT License
   7  */
   8  namespace s9e\TextFormatter\Plugins\Litedown\Parser;
   9  class ParsedText
  10  {
  11      public $decodeHtmlEntities = \false;
  12      protected $hasEscapedChars = \false;
  13      public $hasReferences = \false;
  14      public $linkReferences = [];
  15      protected $text;
  16  	public function __construct($text)
  17      {
  18          if (\strpos($text, '\\') !== \false && \preg_match('/\\\\[!"\'()*[\\\\\\]^_`~]/', $text))
  19          {
  20              $this->hasEscapedChars = \true;
  21              $text = \strtr(
  22                  $text,
  23                  [
  24                      '\\!' => "\x1B0", '\\"' => "\x1B1", "\\'" => "\x1B2", '\\('  => "\x1B3",
  25                      '\\)' => "\x1B4", '\\*' => "\x1B5", '\\[' => "\x1B6", '\\\\' => "\x1B7",
  26                      '\\]' => "\x1B8", '\\^' => "\x1B9", '\\_' => "\x1BA", '\\`'  => "\x1BB",
  27                      '\\~' => "\x1BC"
  28                  ]
  29              );
  30          }
  31          $this->text = $text . "\n\n\x17";
  32      }
  33  	public function __toString()
  34      {
  35          return $this->text;
  36      }
  37  	public function charAt($pos)
  38      {
  39          return $this->text[$pos];
  40      }
  41  	public function decode($str)
  42      {
  43          if ($this->decodeHtmlEntities && \strpos($str, '&') !== \false)
  44              $str = \html_entity_decode($str, \ENT_QUOTES, 'UTF-8');
  45          $str = \str_replace("\x1A", '', $str);
  46          if ($this->hasEscapedChars)
  47              $str = \strtr(
  48                  $str,
  49                  [
  50                      "\x1B0" => '!', "\x1B1" => '"', "\x1B2" => "'", "\x1B3" => '(',
  51                      "\x1B4" => ')', "\x1B5" => '*', "\x1B6" => '[', "\x1B7" => '\\',
  52                      "\x1B8" => ']', "\x1B9" => '^', "\x1BA" => '_', "\x1BB" => '`',
  53                      "\x1BC" => '~'
  54                  ]
  55              );
  56          return $str;
  57      }
  58  	public function indexOf($str, $pos = 0)
  59      {
  60          return \strpos($this->text, $str, $pos);
  61      }
  62  	public function isAfterWhitespace($pos)
  63      {
  64          return ($pos > 0 && $this->isWhitespace($this->text[$pos - 1]));
  65      }
  66  	public function isAlnum($chr)
  67      {
  68          return (\strpos(' abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789', $chr) > 0);
  69      }
  70  	public function isBeforeWhitespace($pos)
  71      {
  72          return $this->isWhitespace($this->text[$pos + 1]);
  73      }
  74  	public function isSurroundedByAlnum($pos, $len)
  75      {
  76          return ($pos > 0 && $this->isAlnum($this->text[$pos - 1]) && $this->isAlnum($this->text[$pos + $len]));
  77      }
  78  	public function isWhitespace($chr)
  79      {
  80          return (\strpos(" \n\t", $chr) !== \false);
  81      }
  82  	public function markBoundary($pos)
  83      {
  84          $this->text[$pos] = "\x17";
  85      }
  86  	public function overwrite($pos, $len)
  87      {
  88          if ($len > 0)
  89              $this->text = \substr($this->text, 0, $pos) . \str_repeat("\x1A", $len) . \substr($this->text, $pos + $len);
  90      }
  91  }