Services/SimfileParser.php

   1 <?php
   2
   3 namespace Services;
   4
   5 use Services\ISimfileParser;
   6 use Exception;
   7
   8 class SimfileParser implements ISimfileParser
   9 {
  10
  11 //        'light' => 'Novice',
  12 //        'beginner' => 'Novice',
  13 //        'easy' => 'Easy',
  14 //        'medium' => 'Medium',
  15 //        'hard' => 'Hard',
  16 //        'challenge' => 'Expert',
  17 //        'edit' => 'Edit'
  18
  19     private $_smFileLines;
  20
  21     public function parse($simfileData)
  22     {
  23         //XXX: Should I explode on ';' instead? That seems like it might be a more reliable delimiter
  24         $this->_smFileLines = explode(";", $simfileData);
  25     }
  26
  27     public function title()
  28     {
  29         $title = $this->extractKey('TITLE');
  30         if(!$title) throw new Exception ('Invalid SM file. TITLE missing');
  31
  32         return $title;
  33     }
  34
  35     public function artist()
  36     {
  37         $artist = $this->extractKey('ARTIST');
  38         if(!$artist) throw new Exception ('Invalid SM file. ARTIST missing');
  39
  40         return $artist;
  41     }
  42
  43     public function stops()
  44     {
  45         $stops = $this->extractKey('STOPS') ? 'Yes' : 'No';
  46         if(!$stops) throw new Exception ('Invalid SM file. STOPS missing');
  47
  48         return $stops;
  49     }
  50
  51     public function fgChanges()
  52     {
  53         $fgChanges = $this->extractKey('FGCHANGES') ? 'Yes' : 'No';
  54         if(!$fgChanges) throw new Exception ('Invalid SM file. FGCHANGES missing');
  55
  56         return $fgChanges;
  57     }
  58
  59     public function bgChanges()
  60     {
  61         $bgChanges = $this->extractKey('BGCHANGES') ? 'Yes' : 'No';
  62         if(!$bgChanges) throw new Exception ('Invalid SM file. BGCHANGES missing');
  63
  64         return $bgChanges;
  65     }
  66
  67     public function bpmChanges()
  68     {
  69         $bmpChanges = $this->extractKey('BPMS') ? 'Yes' : 'No';
  70         if(!$bpmChanges) throw new Exception ('Invalid SM file. BPMS missing');
  71
  72         return $bpmChanges;
  73     }
  74
  75     public function subtitle()
  76     {
  77         $subtitle = $this->extractKey('SUBTITLE');
  78         if(!$subtitle) throw new Exception ('Invalid SM file. SUBTITLE missing');
  79
  80         return $subtitle;
  81     }
  82
  83     function steps()
  84     {
  85         if(empty($this->_smFileLines)) throw new Exception('SM file data not set.');
  86         $allSteps = array();
  87
  88         foreach ($this->_smFileLines as $line)
  89         {
  90             $pos = strpos($line, '#NOTES:');
  91             if ($pos !== false)
  92             {
  93                 $noteData = trim(substr($line, $pos + 9));
  94                 $allSteps = array_merge($allSteps, $this->stepsArrayFromNoteData($noteData));
  95             }
  96         }
  97
  98         if(empty($allSteps)) throw new Exception('Invalid Sm file. NOTES missing');
  99         return $allSteps;
 100     }
 101
 102     private function stepsArrayFromNoteData($noteData)
 103     {
 104         $stepData = array_map('trim', explode(':', $noteData));
 105         $steps = array();
 106         $mode = $stepData[0] == 'dance-single' ? 'single' : null;
 107         $steps[$mode][] = array(
 108             'artist' => $stepData[1],
 109             'difficulty' => $stepData[2],
 110             'rating' => $stepData[3]
 111         );
 112
 113         return $steps;
 114     }
 115
 116     private function extractKey($key)
 117     {
 118         if(empty($this->_smFileLines)) throw new Exception('SM file data not set.');
 119
 120         foreach ($this->_smFileLines as $line)
 121         {
 122             $pos = strpos($line, '#' . $key . ':');
 123             if ($pos !== false) return trim(substr($line, $pos + strlen($key) + 2));
 124         }
 125     }
 126 }