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         $this->_smFileLines = explode(";", $simfileData);
  24     }
  25
  26     public function banner()
  27     {
  28         return $this->extractKey('BANNER') ?: null;
  29     }
  30
  31     public function title()
  32     {
  33         $title = $this->extractKey('TITLE');
  34         if(!$title) throw new Exception ('Invalid SM file. TITLE missing');
  35
  36         return $title;
  37     }
  38
  39     public function artist()
  40     {
  41         $artist = $this->extractKey('ARTIST');
  42         if(!$artist) throw new Exception ('Invalid SM file. ARTIST missing');
  43
  44         return new \Domain\VOs\StepMania\Artist($artist);
  45     }
  46
  47     public function stops()
  48     {
  49         $stops = $this->extractKey('STOPS') ? 'Yes' : 'No';
  50         if(!$stops) throw new Exception ('Invalid SM file. STOPS missing');
  51
  52         return $stops;
  53     }
  54
  55     public function fgChanges()
  56     {
  57         $fgChanges = $this->extractKey('FGCHANGES') ? 'Yes' : 'No';
  58         if(!$fgChanges) throw new Exception ('Invalid SM file. FGCHANGES missing');
  59
  60         return $fgChanges;
  61     }
  62
  63     public function bpm()
  64     {
  65         $displayBpm = $this->extractKey('DISPLAYBPM');
  66
  67         if($displayBpm)
  68         {
  69             $bpmRange = explode(":",$displayBpm);
  70             $bpmRange[1] = @$bpmRange[1] ?: $bpmRange[0];
  71         } else {
  72             $bpms = $this->extractKey('BPMS');
  73             $bpmRange = $this->parseBpms($bpms);
  74         }
  75
  76         //I have nfi why I made the BPM VO high-low instead of low-high in the constructor but yolo
  77         return new \Domain\VOs\StepMania\BPM($bpmRange[1], $bpmRange[0]);
  78     }
  79
  80     public function bgChanges()
  81     {
  82         $bgChanges = $this->extractKey('BGCHANGES') ? 'Yes' : 'No';
  83         if(!$bgChanges) throw new Exception ('Invalid SM file. BGCHANGES missing');
  84
  85         return $bgChanges;
  86     }
  87
  88     public function bpmChanges()
  89     {
  90         $bpmChanges = $this->extractKey('BPMS') ? 'Yes' : 'No';
  91         if(!$bpmChanges) throw new Exception ('Invalid SM file. BPMS missing');
  92
  93         return $bpmChanges;
  94     }
  95
  96     public function subtitle()
  97     {
  98         $subtitle = $this->extractKey('SUBTITLE');
  99         if(!$subtitle) throw new Exception ('Invalid SM file. SUBTITLE missing');
 100
 101         return $subtitle;
 102     }
 103
 104     function steps()
 105     {
 106         if(empty($this->_smFileLines)) throw new Exception('SM file data not set.');
 107         $allSteps = array();
 108
 109         foreach ($this->_smFileLines as $line)
 110         {
 111             $pos = strpos($line, '#NOTES:');
 112             if ($pos !== false)
 113             {
 114                 $noteData = trim(substr($line, $pos + 9));
 115                 $allSteps[] = $this->stepchartFromNoteData($noteData);
 116             }
 117         }
 118
 119         if(empty($allSteps)) throw new Exception('Invalid Sm file. NOTES missing');
 120         return $allSteps;
 121     }
 122
 123     private function stepchartFromNoteData($noteData)
 124     {
 125         $stepData = array_map('trim', explode(':', $noteData));
 126         return new \Domain\VOs\StepMania\StepChart(
 127             new \Domain\VOs\StepMania\DanceMode($stepData[0]),
 128             new \Domain\VOs\StepMania\Difficulty($stepData[2]),
 129             empty($stepData[1]) ? null : new \Domain\VOs\StepMania\StepArtist($stepData[1]),
 130             $stepData[3]
 131         );
 132     }
 133
 134     private function extractKey($key)
 135     {
 136         if(empty($this->_smFileLines)) throw new Exception('SM file data not set.');
 137
 138         foreach ($this->_smFileLines as $line)
 139         {
 140             $pos = strpos($line, '#' . $key . ':');
 141             if ($pos !== false) return trim(substr($line, $pos + strlen($key) + 2));
 142         }
 143     }
 144
 145     private function parseBpms($bpms)
 146     {
 147         $bpms = explode(",", $bpms);
 148         $bpmRange = array('high' => null, 'low' => null);
 149
 150         foreach($bpms as $bpm)
 151         {
 152                 $bpmMeasure = explode('=', $bpm);
 153                 $bpmValue = floatval($bpmMeasure[1]);
 154
 155                 if(empty($bpmRange['low'])) $bpmRange['low'] = $bpmRange['high'] = $bpmValue;
 156
 157                 $bpmRange['high'] = ($bpmValue > $bpmRange['high']) ? $bpmValue : $bpmRange['high'];
 158                 $bpmRange['low'] = ($bpmValue < $bpmRange['low']) ? $bpmValue : $bpmRange['low'];
 159         }
 160
 161         return array($bpmRange['low'], $bpmRange['high']);
 162     }
 163 }