+%%%% This file is part of LilyPond, the GNU music typesetter.
+%%%%
+%%%% Copyright (C) 2010 Carl D. Sorensen <c_sorensen@byu.edu>
+%%%%
+%%%% LilyPond is free software: you can redistribute it and/or modify
+%%%% it under the terms of the GNU General Public License as published by
+%%%% the Free Software Foundation, either version 3 of the License, or
+%%%% (at your option) any later version.
+%%%%
+%%%% LilyPond is distributed in the hope that it will be useful,
+%%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
+%%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+%%%% GNU General Public License for more details.
+%%%%
+%%%% You should have received a copy of the GNU General Public License
+%%%% along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
+
+\version "2.13.46"
+
+%% A stringTuning is a list of pitches ordered by string number
+%% from 1 to N.
+%% Here we define a number of default string tunings.
+
+%% A scheme function for converting a chord to a string tuning
+#(define (chord->tuning parser tuning-symbol chord)
+ (let* ((ev-chord (car (extract-named-music chord 'EventChord)))
+ (pitches (event-chord-pitches ev-chord)))
+ (ly:parser-define! parser tuning-symbol (reverse pitches))))
+
+%% A music function for converting a chord to a string tuning.
+%% The music argument for \makeStringTuning must be a chord in
+%% absolute mode ordered from the highest string number to the
+%% lowest string number
+
+makeStringTuning =
+#(define-music-function (parser location tuning chord)
+ (symbol? ly:music?)
+ (_ "Convert @{chord} to a string tuning stored in @code{tuning}.
+@{chord} must be in absolute pitches and should have the highest
+string number (generally the lowest pitch) first. @code{tuning}
+should be a string that will be converted to a symbol.")
+ (begin
+ (chord->tuning parser tuning chord)
+ (make-music 'SequentialMusic 'void #t)))
+
+
+%% A music function for converting a chord to a string tuning
+%% and setting the current context stringTunings property to
+%% the newly-defined-string tuning.
+
+contextStringTuning =
+#(define-music-function (parser location tuning chord)
+ (symbol? ly:music?)
+ (_ "Convert @{chord} to a string tuning stored in @code{tuning},
+and set @code{stringTunings} of the current context to the
+newly-defined tuning.
+@{chord} must be in absolute pitches and should have the highest
+string number (generally the lowest pitch) first. @code{tuning}
+should be a string that will be converted to a symbol.")
+ (begin
+ (chord->tuning parser tuning chord)
+ #{
+ \set TabStaff.stringTunings = $(ly:parser-lookup parser tuning)
+ \set FretBoards.stringTunings = $(ly:parser-lookup parser tuning)
+ #}))
+
+%% A music function for converting an alist to string-tunings
+makeDefaultStringTunings =
+#(define-music-function (parser location default-tuning-alist)
+ (cheap-list?)
+ (_ "Define default string tunings for each element of
+@code{default-tuning-alist}.")
+ (begin
+ (for-each (lambda (alist-entry)
+ (chord->tuning parser (car alist-entry) (cdr alist-entry)))
+ default-tuning-alist)
+ (make-music 'SequentialMusic 'void #t)))
+
+% tuning definitions require default pitchnames
+\languageSaveAndChange #default-language
+
+%% Define alist of default string tunings
+defaultStringTunings =
+#`(
+ ;; guitar tunings
+ (guitar-tuning . ,#{<e, a, d g b e'>#})
+ (guitar-seven-string-tuning . ,#{<b,, e, a, d g b e'>#})
+ (guitar-drop-d-tuning . ,#{<d, a, d g b e'>#})
+ (guitar-open-g-tuning . ,#{<d, g, d g b d'>#})
+ (guitar-open-d-tuning . ,#{<d, a, d fis a d'>#})
+ (guitar-dadgad-tuning . ,#{<d, a, d g a d'>#})
+ (guitar-lute-tuning . ,#{<e, a, d fis b e'>#})
+ (guitar-asus4-tuning . ,#{<e, a, d e a e'>#})
+
+ ;; bass tunings
+ (bass-tuning . ,#{<e,, a,, d, g,>#})
+ (bass-four-string-tuning . ,#{<e,, a,, d, g,>#})
+ (bass-drop-d-tuning . ,#{<d,, a,, d, g,>#})
+ (bass-five-string-tuning . ,#{<b,,, e,, a,, d, g,>#})
+ (bass-six-string-tuning . ,#{<b,,, e,, a,, d, g, c>#})
+
+ ;; mandolin tunings
+ (mandolin-tuning . ,#{<g d' a' e''>#})
+
+ ;; tunings for 5-string banjo
+ (banjo-open-g-tuning . ,#{<g' d g b d'>#})
+ (banjo-c-tuning . ,#{<g' c g b d'>#})
+ (banjo-modal-tuning . ,#{<g' d g c' d'>#})
+ (banjo-open-d-tuning . ,#{<a' d fis a d'>#})
+ (banjo-open-dm-tuning . ,#{<a' d fis a d'>#})
+
+ ;; ukulele tunings
+ (ukulele-tuning . ,#{<g' c' e' a'>#})
+ (ukulele-d-tuning . ,#{<a' d' fis' b'>#})
+ (tenor-ukulele-tuning . ,#{<a' e' c' g>#})
+ (baritone-ukulele-tuning . ,#{<e' b g d>#})
+
+ ;; orchestral strings
+ (violin-tuning . ,#{<g d' a' e''>#})
+ (viola-tuning . ,#{<c g d' a'>#})
+ (cello-tuning . ,#{<c, g, d a>#})
+ (double-bass-tuning . ,#{<e,, a,, d, g,>#})
+ )
+
+%% convert 5-string banjo tuning to 4-string by removing the 5th string
+#(define-public (four-string-banjo tuning)
+ (reverse (cdr (reverse tuning))))
+
+%% make all of the default string tunings
+
+\makeDefaultStringTunings #defaultStringTunings
+
+% restore the language
+\languageRestore
+
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