-;;;
-;;; chord-name.scm -- chord name utility functions
-;;;
-;;; source file of the GNU LilyPond music typesetter
-;;;
-;;; (c) 2000--2003 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+;;;; This file is part of LilyPond, the GNU music typesetter.
+;;;;
+;;;; Copyright (C) 2000--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
+;;;;
+;;;; 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/>.
+
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; jazz-part 2
;;
;; after Klaus Ignatzek, Die Jazzmethode fuer Klavier 1.
-;;
+;;
;; The idea is: split chords into
-;;
+;;
;; ROOT PREFIXES MAIN-NAME ALTERATIONS SUFFIXES ADDITIONS
;;
;; and put that through a layout routine.
-;;
-;; the split is a procedural process, with lots of set!.
+;;
+;; the split is a procedural process, with lots of set!.
;;
;; todo: naming is confusing: steps (0 based) vs. steps (1 based).
(define (pitch-step p)
- "Musicological notation for an interval. Eg. C to D is 2."
+ "Musicological notation for an interval. Eg. C to D is 2."
(+ 1 (ly:pitch-steps p)))
(define (get-step x ps)
(if (null? ps)
#f
(if (= (- x 1) (ly:pitch-steps (car ps)))
- (car ps)
- (get-step x (cdr ps)))
- ))
+ (car ps)
+ (get-step x (cdr ps)))))
(define (replace-step p ps)
"Copy PS, but replace the step of P in PS."
(if (null? ps)
'()
- (let*
- (
- (t (replace-step p (cdr ps)))
- )
-
- (if (= (ly:pitch-steps p) (ly:pitch-steps (car ps)))
- (cons p t)
- (cons (car ps) t)
- ))
- ))
+ (let* ((t (replace-step p (cdr ps))))
+ (if (= (ly:pitch-steps p) (ly:pitch-steps (car ps)))
+ (cons p t)
+ (cons (car ps) t)))))
(define (remove-step x ps)
"Copy PS, but leave out the Xth step."
(if (null? ps)
'()
- (let*
- (
- (t (remove-step x (cdr ps)))
- )
-
- (if (= (- x 1) (ly:pitch-steps (car ps)))
- t
- (cons (car ps) t)
- ))
- ))
+ (let* ((t (remove-step x (cdr ps))))
+ (if (= (- x 1) (ly:pitch-steps (car ps)))
+ t
+ (cons (car ps) t)))))
(define-public (ignatzek-chord-names
- in-pitches bass inversion
- context)
+ in-pitches bass inversion
+ context)
(define (remove-uptil-step x ps)
"Copy PS, but leave out everything below the Xth step."
(if (null? ps)
- '()
- (if (< (ly:pitch-steps (car ps)) (- x 1))
- (remove-uptil-step x (cdr ps))
- ps)
- ))
-
- (define name-root (ly:get-context-property context 'chordRootNamer))
- (define name-note
- (let ((nn (ly:get-context-property context 'chordNoteNamer)))
+ '()
+ (if (< (ly:pitch-steps (car ps)) (- x 1))
+ (remove-uptil-step x (cdr ps))
+ ps)))
+
+ (define name-root (ly:context-property context 'chordRootNamer))
+ (define name-note
+ (let ((nn (ly:context-property context 'chordNoteNamer)))
(if (eq? nn '())
- ; replacing the next line with name-root gives guile-error...? -rz
+ ;; replacing the next line with name-root gives guile-error...? -rz
- ;; apparently sequence of defines is equivalent to let, not let* ? -hwn
- (ly:get-context-property context 'chordRootNamer)
- ;; name-root
- nn)))
+ ;; apparently sequence of defines is equivalent to let, not let* ? -hwn
+ (ly:context-property context 'chordRootNamer)
+ ;; name-root
+ nn)))
(define (is-natural-alteration? p)
- (= (natural-chord-alteration p) (ly:pitch-alteration p)))
-
-
+ (= (natural-chord-alteration p) (ly:pitch-alteration p)))
+
(define (ignatzek-format-chord-name
- root
- prefix-modifiers
- main-name
- alteration-pitches
- addition-pitches
- suffix-modifiers
- bass-pitch
- )
-
- "Format for the given (lists of) pitches. This is actually more
+ root
+ prefix-modifiers
+ main-name
+ alteration-pitches
+ addition-pitches
+ suffix-modifiers
+ bass-pitch
+ lowercase-root?)
+
+ "Format for the given (lists of) pitches. This is actually more
work than classifying the pitches."
-
+
(define (filter-main-name p)
- "The main name: don't print anything for natural 5 or 3."
- (if
- (or (not (ly:pitch? p))
- (and (is-natural-alteration? p)
- (or (= (pitch-step p) 5)
- (= (pitch-step p) 3))))
- '()
- (list (name-step p))
- ))
+ "The main name: don't print anything for natural 5 or 3."
+ (if
+ (or (not (ly:pitch? p))
+ (and (is-natural-alteration? p)
+ (or (= (pitch-step p) 5)
+ (= (pitch-step p) 3))))
+ '()
+ (list (name-step p))))
(define (glue-word-to-step word x)
- (make-line-markup
+ (make-line-markup
(list
- (make-simple-markup word)
- (name-step x)))
- )
-
+ (make-simple-markup word)
+ (name-step x))))
+
(define (suffix-modifier->markup mod)
(if (or (= 4 (pitch-step mod))
- (= 2 (pitch-step mod)))
- (glue-word-to-step "sus" mod)
- (glue-word-to-step "huh" mod)
- ))
-
+ (= 2 (pitch-step mod)))
+ (glue-word-to-step "sus" mod)
+ (glue-word-to-step "huh" mod)))
+
(define (prefix-modifier->markup mod)
(if (and (= 3 (pitch-step mod))
- (= -1 (ly:pitch-alteration mod)))
- (make-simple-markup "m")
- (make-simple-markup "huh")
- ))
-
+ (= FLAT (ly:pitch-alteration mod)))
+ (if lowercase-root?
+ empty-markup
+ (ly:context-property context 'minorChordModifier))
+ (make-simple-markup "huh")))
+
(define (filter-alterations alters)
"Filter out uninteresting (natural) pitches from ALTERS."
-
+
(define (altered? p)
- (not (is-natural-alteration? p)))
-
+ (not (is-natural-alteration? p)))
+
(if
(null? alters)
'()
- (let*
- (
- (l (filter-list altered? alters))
- (lp (last-pair alters))
- )
-
- ;; we want the highest also if unaltered
- (if (and (not (altered? (car lp)))
- (> (pitch-step (car lp)) 5))
- (append l (last-pair alters))
- l)
- )))
+ (let* ((lst (filter altered? alters))
+ (lp (last-pair alters)))
+
+ ;; we want the highest also if unaltered
+ (if (and (not (altered? (car lp)))
+ (> (pitch-step (car lp)) 5))
+ (append lst (last-pair alters))
+ lst))))
(define (name-step pitch)
(define (step-alteration pitch)
- (- (ly:pitch-alteration pitch)
- (natural-chord-alteration pitch)
- ))
-
- (let*
- (
- (num-markup (make-simple-markup
- (number->string (pitch-step pitch))))
- (args (list num-markup))
- (total (if (= (ly:pitch-alteration pitch) 0)
- (if (= (pitch-step pitch) 7)
- (list (ly:get-context-property context 'majorSevenSymbol))
- args)
- (cons (accidental->markup (step-alteration pitch)) args)
- ))
- )
-
- (make-line-markup total)))
-
- (let*
- (
- (sep (ly:get-context-property context 'chordNameSeparator))
- (root-markup (name-root root))
- (add-markups (map (lambda (x)
- (glue-word-to-step "add" x))
- addition-pitches))
- (filtered-alterations (filter-alterations alteration-pitches))
- (alterations (map name-step filtered-alterations))
- (suffixes (map suffix-modifier->markup suffix-modifiers))
- (prefixes (map prefix-modifier->markup prefix-modifiers))
- (main-markups (filter-main-name main-name))
- (to-be-raised-stuff (markup-join
- (append
- main-markups
- alterations
- suffixes
- add-markups) sep))
- (base-stuff (if bass-pitch
- (list sep (name-note bass-pitch))
- '()))
- )
+ (- (ly:pitch-alteration pitch)
+ (natural-chord-alteration pitch)))
+
+ (let* ((num-markup (make-simple-markup
+ (number->string (pitch-step pitch))))
+ (args (list num-markup))
+ (major-seven-symbol (ly:context-property context 'majorSevenSymbol))
+ (total
+ (if (and (= (ly:pitch-alteration pitch) 0)
+ (= (pitch-step pitch) 7)
+ (markup? major-seven-symbol))
+ (list major-seven-symbol)
+ (cons (accidental->markup (step-alteration pitch)) args))))
+
+ (make-line-markup total)))
+
+ (let* ((sep (ly:context-property context 'chordNameSeparator))
+ (slashsep (ly:context-property context 'slashChordSeparator))
+ (root-markup (name-root root lowercase-root?))
+ (add-pitch-prefix (ly:context-property context 'additionalPitchPrefix))
+ (add-markups (map (lambda (x) (glue-word-to-step add-pitch-prefix x))
+ addition-pitches))
+ (filtered-alterations (filter-alterations alteration-pitches))
+ (alterations (map name-step filtered-alterations))
+ (suffixes (map suffix-modifier->markup suffix-modifiers))
+ (prefixes (map prefix-modifier->markup prefix-modifiers))
+ (main-markups (filter-main-name main-name))
+ (to-be-raised-stuff (markup-join
+ (append
+ main-markups
+ alterations
+ suffixes
+ add-markups) sep))
+ (base-stuff (if (ly:pitch? bass-pitch)
+ (list slashsep (name-note bass-pitch #f))
+ '())))
(set! base-stuff
- (append
- (list root-markup
- (markup-join prefixes sep)
- (make-super-markup to-be-raised-stuff))
- base-stuff))
- (make-line-markup base-stuff)
-
- ))
-
- (let*
- (
- (root (car in-pitches))
- (pitches (map (lambda (x) (ly:pitch-diff x root)) (cdr in-pitches)))
- (exceptions (ly:get-context-property context 'chordNameExceptions))
- (exception (assoc-get-default pitches exceptions #f))
- (prefixes '())
- (suffixes '())
- (add-steps '())
- (main-name #f)
- (bass-note #f)
- (alterations '())
- )
-
- (if
- exception
- (make-line-markup
- (list (name-root root) exception))
-
- (begin ; no exception.
-
- ; handle sus4 and sus2 suffix: if there is a 3 together with
- ; sus2 or sus4, then we explicitly say add3.
- (map
- (lambda (j)
- (if (get-step j pitches)
- (begin
- (if (get-step 3 pitches)
- (begin
- (set! add-steps (cons (get-step 3 pitches) add-steps))
- (set! pitches (remove-step 3 pitches))
- ))
- (set! suffixes (cons (get-step j pitches) suffixes))
- )
- )
- ) '(2 4) )
-
- ;; do minor-3rd modifier.
- (if (and (get-step 3 pitches)
- (= (ly:pitch-alteration (get-step 3 pitches)) -1))
- (set! prefixes (cons (get-step 3 pitches) prefixes))
- )
-
- ;; lazy bum. Should write loop.
- (cond
- ((get-step 7 pitches) (set! main-name (get-step 7 pitches)))
- ((get-step 6 pitches) (set! main-name (get-step 6 pitches)))
- ((get-step 5 pitches) (set! main-name (get-step 5 pitches)))
- ((get-step 4 pitches) (set! main-name (get-step 4 pitches)))
- ((get-step 3 pitches) (set! main-name (get-step 3 pitches)))
- )
-
- (let*
- (
- (3-diff? (lambda (x y)
- (= (- (pitch-step y) (pitch-step x)) 2)))
- (split (split-at 3-diff? (remove-uptil-step 5 pitches)))
- )
- (set! alterations (append alterations (car split)))
- (set! add-steps (append add-steps (cdr split)))
- (set! alterations (delq main-name alterations))
- (set! add-steps (delq main-name add-steps))
-
- (if (ly:pitch? inversion)
- (set! bass-note inversion)
- )
-
- (if (ly:pitch? bass)
- (set! bass-note bass)
- )
-
- ;; chords with natural (5 7 9 11 13) or leading subsequence.
- ;; etc. are named by the top pitch, without any further
- ;; alterations.
- (if (and
- (ly:pitch? main-name)
- (= 7 (pitch-step main-name))
- (is-natural-alteration? main-name)
- (pair? (remove-uptil-step 7 alterations))
- (reduce (lambda (x y) (and x y))
- (map is-natural-alteration? alterations)))
- (begin
- (set! main-name (tail alterations))
- (set! alterations '())
- ))
-
- (ignatzek-format-chord-name root prefixes main-name alterations add-steps suffixes bass-note)
- )
- ))))
+ (append
+ (list root-markup
+ (conditional-kern-before (markup-join prefixes sep)
+ (and (not (null? prefixes))
+ (= (ly:pitch-alteration root) NATURAL))
+ (ly:context-property context 'chordPrefixSpacer))
+ (make-super-markup to-be-raised-stuff))
+ base-stuff))
+ (make-line-markup base-stuff)))
+
+ (define (ignatzek-format-exception
+ root
+ exception-markup
+ bass-pitch
+ lowercase-root?)
+
+ (make-line-markup
+ `(
+ ,(name-root root lowercase-root?)
+ ,exception-markup
+ .
+ ,(if (ly:pitch? bass-pitch)
+ (list (ly:context-property context 'slashChordSeparator)
+ (name-note bass-pitch #f))
+ '()))))
+
+ (let* ((root (car in-pitches))
+ (pitches (map (lambda (x) (ly:pitch-diff x root)) (cdr in-pitches)))
+ (lowercase-root?
+ (and (ly:context-property context 'chordNameLowercaseMinor)
+ (let ((third (get-step 3 pitches)))
+ (and third (= (ly:pitch-alteration third) FLAT)))))
+ (exceptions (ly:context-property context 'chordNameExceptions))
+ (exception (assoc-get pitches exceptions))
+ (prefixes '())
+ (suffixes '())
+ (add-steps '())
+ (main-name #f)
+ (bass-note
+ (if (ly:pitch? inversion)
+ inversion
+ bass))
+ (alterations '()))
+
+ (if exception
+ (ignatzek-format-exception root exception bass-note lowercase-root?)
+
+ (begin
+ ;; no exception.
+ ;; handle sus4 and sus2 suffix: if there is a 3 together with
+ ;; sus2 or sus4, then we explicitly say add3.
+ (for-each
+ (lambda (j)
+ (if (get-step j pitches)
+ (begin
+ (if (get-step 3 pitches)
+ (begin
+ (set! add-steps (cons (get-step 3 pitches) add-steps))
+ (set! pitches (remove-step 3 pitches))))
+ (set! suffixes (cons (get-step j pitches) suffixes)))))
+ '(2 4))
+
+ ;; do minor-3rd modifier.
+ (if (and (get-step 3 pitches)
+ (= (ly:pitch-alteration (get-step 3 pitches)) FLAT))
+ (set! prefixes (cons (get-step 3 pitches) prefixes)))
+
+ ;; lazy bum. Should write loop.
+ (cond
+ ((get-step 7 pitches) (set! main-name (get-step 7 pitches)))
+ ((get-step 6 pitches) (set! main-name (get-step 6 pitches)))
+ ((get-step 5 pitches) (set! main-name (get-step 5 pitches)))
+ ((get-step 4 pitches) (set! main-name (get-step 4 pitches)))
+ ((get-step 3 pitches) (set! main-name (get-step 3 pitches))))
+
+ (let* ((3-diff? (lambda (x y)
+ (= (- (pitch-step y) (pitch-step x)) 2)))
+ (split (split-at-predicate
+ 3-diff? (remove-uptil-step 5 pitches))))
+ (set! alterations (append alterations (car split)))
+ (set! add-steps (append add-steps (cdr split)))
+ (set! alterations (delq main-name alterations))
+ (set! add-steps (delq main-name add-steps))
+
+
+ ;; chords with natural (5 7 9 11 13) or leading subsequence.
+ ;; etc. are named by the top pitch, without any further
+ ;; alterations.
+ (if (and
+ (ly:pitch? main-name)
+ (= 7 (pitch-step main-name))
+ (is-natural-alteration? main-name)
+ (pair? (remove-uptil-step 7 alterations))
+ (every is-natural-alteration? alterations))
+ (begin
+ (set! main-name (last alterations))
+ (set! alterations '())))
+ (ignatzek-format-chord-name
+ root prefixes main-name alterations add-steps suffixes bass-note
+ lowercase-root?))))))
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