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         } else {
  71             $bpms = $this->extractKey('BPMS');
  72             $bpmRange = $this->parseBpms($bpms);
  73         }
  74
  75         //I have nfi why I made the BPM VO high-low instead of low-high in the constructor but yolo
  76         return new \Domain\VOs\StepMania\BPM($bpmRange[1], $bpmRange[0]);
  77     }
  78
  79     public function bgChanges()
  80     {
  81         $bgChanges = $this->extractKey('BGCHANGES') ? 'Yes' : 'No';
  82         if(!$bgChanges) throw new Exception ('Invalid SM file. BGCHANGES missing');
  83
  84         return $bgChanges;
  85     }
  86
  87     public function bpmChanges()
  88     {
  89         $bpmChanges = $this->extractKey('BPMS') ? 'Yes' : 'No';
  90         if(!$bpmChanges) throw new Exception ('Invalid SM file. BPMS missing');
  91
  92         return $bpmChanges;
  93     }
  94
  95     public function subtitle()
  96     {
  97         $subtitle = $this->extractKey('SUBTITLE');
  98         if(!$subtitle) throw new Exception ('Invalid SM file. SUBTITLE missing');
  99
 100         return $subtitle;
 101     }
 102
 103     function steps()
 104     {
 105         if(empty($this->_smFileLines)) throw new Exception('SM file data not set.');
 106         $allSteps = array();
 107
 108         foreach ($this->_smFileLines as $line)
 109         {
 110             $pos = strpos($line, '#NOTES:');
 111             if ($pos !== false)
 112             {
 113                 $noteData = trim(substr($line, $pos + 9));
 114                 $allSteps[] = $this->stepchartFromNoteData($noteData);
 115             }
 116         }
 117
 118         if(empty($allSteps)) throw new Exception('Invalid Sm file. NOTES missing');
 119         return $allSteps;
 120     }
 121
 122     private function stepchartFromNoteData($noteData)
 123     {
 124         $stepData = array_map('trim', explode(':', $noteData));
 125         return new \Domain\VOs\StepMania\StepChart(
 126             new \Domain\VOs\StepMania\DanceMode($stepData[0]),
 127             new \Domain\VOs\StepMania\Difficulty($stepData[2]),
 128             empty($stepData[1]) ? null : new \Domain\VOs\StepMania\StepArtist($stepData[1]),
 129             $stepData[3]
 130         );
 131     }
 132
 133     private function extractKey($key)
 134     {
 135         if(empty($this->_smFileLines)) throw new Exception('SM file data not set.');
 136
 137         foreach ($this->_smFileLines as $line)
 138         {
 139             $pos = strpos($line, '#' . $key . ':');
 140             if ($pos !== false) return trim(substr($line, $pos + strlen($key) + 2));
 141         }
 142     }
 143
 144     private function parseBpms($bpms)
 145     {
 146         $bpms = explode(",", $bpms);
 147         $bpmRange = array('high' => null, 'low' => null);
 148
 149         foreach($bpms as $bpm)
 150         {
 151                 $bpmMeasure = explode('=', $bpm);
 152                 $bpmValue = floatval($bpmMeasure[1]);
 153
 154                 if(empty($bpmRange['low'])) $bpmRange['low'] = $bpmRange['high'] = $bpmValue;
 155
 156                 $bpmRange['high'] = ($bpmValue > $bpmRange['high']) ? $bpmValue : $bpmRange['high'];
 157                 $bpmRange['low'] = ($bpmValue < $bpmRange['low']) ? $bpmValue : $bpmRange['low'];
 158         }
 159
 160         return array($bpmRange['low'], $bpmRange['high']);
 161     }
 162 }