diff options
Diffstat (limited to 'laravel/app/Http/Controllers')
| -rw-r--r-- | laravel/app/Http/Controllers/SongController.php | 95 |
1 files changed, 92 insertions, 3 deletions
diff --git a/laravel/app/Http/Controllers/SongController.php b/laravel/app/Http/Controllers/SongController.php index d1d4741..3f68714 100644 --- a/laravel/app/Http/Controllers/SongController.php +++ b/laravel/app/Http/Controllers/SongController.php @@ -13,11 +13,16 @@ class SongController extends Controller $song = Song::where('number', $songNumber )->first(); $lines = explode( "\n", $song['text'] ); $newText = ''; + $transp = $_GET['transp'] ?? 0; foreach( $lines as $line ){ $line = htmlspecialchars( $line ); if ( $this->chordline( $line ) ) { - $transp = 0; - $class = "tabs chord$transp"; + if ( $transp != 0) { + $line = $this->z_transpose2( $line, $transp ); + } + $class = ! isset( $song['key'] ) ? + "tabs chord$transp" + : "tabs chord" . $this->transpadd( $song['key'], $transp ); $line = str_replace( array('{','}'), array('</b>{', "}<b class='$class'>" ), @@ -28,7 +33,7 @@ class SongController extends Controller } } $song['escapedText'] = $newText; - return view('song', ['song' => $song, 'transp' => 0 ] ); + return view('song', ['song' => $song, 'transp' => $transp ] ); } /** @@ -56,5 +61,89 @@ class SongController extends Controller } return ($goodtokens *2)+ $ambtokens >= $badtokens; } + + private function z_transpose2( $line, $transp ) + { + $newchords = $this->z_transparray( $transp ); + $newline = ''; + $space = 0; ///@< Spaces that need to be added or removed. + $inCurly = 0; + for($i = 0; $i < strlen($line); $i++) { + $char = $line[$i]; + $nchar = isset($line[$i+1]) ? $line[$i+1] : ''; + $upchar = strtoupper($line[$i]); + $cval = ord($upchar); + if ( $char == '}' && $inCurly ){ $inCurly = 0;} + if ( $char == '{' || $inCurly ){ $inCurly = 1; $newline .= $char; continue;} + // A-G + if( $cval <= 71 && $cval >=65 ) { + // Exception for Cmaj7 + if( $upchar == 'A' && $nchar == 'j' ) { + $newline .= $char; + } else if( $nchar == 'b' || $nchar =='#') { + $i++; //We have read an extra character now. + $newchord = $newchords[$upchar . $nchar]; + if( strlen($newchord) == 1 ) { + // Need to insert an extra space. + $space += 1; + } + $newline .= $newchord; + } else { + $newchord = $newchords[$upchar]; + if( strlen($newchord) == 2 ) { + // Need to remove an extra space. + $space -= 1; + } + $newline .= $newchord; + } + } else if ( $char == ' ' ) { + if( $space >= 0) { + for ($j = 0; $j <= $space; $j++) { + $newline .= ' '; + } + $space = 0; + } else { + // Only balance negative spaces if one will be left remaining + if( $nchar == ' ' ) { + $i++; + $space += 1; + } + $newline .= ' '; + } + } else { + $newline .= $char; + } + } + return $newline; + } + + private function z_transparray( $transp ) + { + $chords = + array( "C","C#","D","D#","E","F","F#","G","G#","A","Bb","B" ); + $newchords = array(); + // Create array to map old chords to new ones + for ($i=0; $i < 12; $i++) { + $newchords[$chords[$i]] = $chords[($i+$transp+12)%12]; + } + $newchords["Db"] = $newchords["C#"]; + $newchords["Eb"] = $newchords["D#"]; + $newchords["Gb"] = $newchords["F#"]; + $newchords["Ab"] = $newchords["G#"]; + $newchords["A#"] = $newchords["Bb"]; + return $newchords; + } + private function transpadd( $fromkey, $integer ) + { + $chords = array_flip(array( "C","C#","D","D#","E","F","F#","G","G#","A","A#","B" )); + $chords["Db"] = $chords["C#"]; + $chords["Eb"] = $chords["D#"]; + $chords["Gb"] = $chords["F#"]; + $chords["Ab"] = $chords["G#"]; + $chords["Bb"] = $chords["A#"]; + $ochords = array( "C","Db","D","Eb","E","F","Gb","G","Ab","A","Bb","B" ); + $fromkey = trim($fromkey, 'm'); + return $ochords[($chords[$fromkey] + $integer + 24)%12]; + } } |