Chordpro export

.gitignore

@@ -1,8 +1,8 @@
 # ---> Lilypond
 *.pdf
+*.cho
 *.ps
 *.midi
 *.mid
 *.log
 *~
-

private_includes/base/all.ily

@@ -38,6 +38,7 @@
 \include "eps_file_from_song_dir.ily"
 \include "title_with_category_images.ily"
 \include "chord_settings.ily"
+\include "chordpro.ily"
 \include "transposition.ily"
 \include "verses_with_chords.ily"
 \include "arrows_in_scores.ily"

private_includes/base/basic_format_and_style_settings.ily

@@ -158,6 +158,8 @@ override-stanza =
 #(define (stanza . stanzanumbers)
 #{
   \once \override StanzaNumber.details.custom-realstanza = ##t % set this to signal that there is a real stanza and no repeat signs
+  \once \override StanzaNumber.details.custom-stanza-type = #'verse
+  \once \override StanzaNumber.details.custom-stanza-numbers = #stanzanumbers
   \applyContext
   #(lambda (context)
     (handle-stanza-numbers context stanzanumbers
@@ -169,6 +171,8 @@ ref =
 #(define-music-function (stanzanumbers lyrics) ((number-list? (list)) ly:music?)
 #{ \lyricmode {
     \once \override StanzaNumber.details.custom-realstanza = ##t % set this to signal that there is a real stanza and no repeat signs
+    \once \override StanzaNumber.details.custom-stanza-type = #'ref
+    \once \override StanzaNumber.details.custom-stanza-numbers = #stanzanumbers
     \applyContext
     #(lambda (context)
       (handle-stanza-numbers context stanzanumbers
@@ -186,6 +190,8 @@ bridge =
 #(define-music-function (stanzanumbers lyrics) ((number-list? (list)) ly:music?)
 #{ \lyricmode {
     \once \override StanzaNumber.details.custom-realstanza = ##t % set this to signal that there is a real stanza and no repeat signs
+    \once \override StanzaNumber.details.custom-stanza-type = #'bridge
+    \once \override StanzaNumber.details.custom-stanza-numbers = #stanzanumbers
     \applyContext
     #(lambda (context)
       (handle-stanza-numbers context stanzanumbers
@@ -201,8 +207,11 @@ bridge =
 
 % prints a repStart Sign as stanza if the tag 'repeats is kept.
 % if there was a stanza already set by the stanza function with StanzaNumber.details.custom-realstanza = ##t we set that also as stanza.
+% Sets custom-inline-text for ChordPro export so it can collect the repeat sign separately
 repStartWithTag = \lyricmode {
   \tag #'repeats {
+    \once \override StanzaNumber.details.custom-inline-text = \repStart
+    \once \override StanzaNumber.details.custom-inline-direction = #LEFT
     \applyContext
     #(lambda (context)
       (let ((lastStanza (ly:context-property context 'stanza))
@@ -220,6 +229,8 @@ repStartWithTag = \lyricmode {
 
 repStopWithTag = \lyricmode {
   \tag #'repeats {
+    \once \override StanzaNumber.details.custom-inline-text = \repStop
+    \once \override StanzaNumber.details.custom-inline-direction = #RIGHT
     \once \override StanzaNumber.font-series = #'normal
     \once \override StanzaNumber.direction = 1
     \set stanza = \markup { \pad-x-right #1 \repStop }

private_includes/base/chord_settings.ily

@@ -40,34 +40,19 @@ shiftChords = #(define-music-function (parser location xshift chords) (number? l
 
 altChord =
 #(define-music-function (parser location mainchord altchord) (ly:music? ly:music?)
-  (let* ((remove-point-and-click
-           (lambda (grob)
-             (ly:grob-set-property! grob 'cause #f)
-             (ly:text-interface::print grob)))
-         (chord-name (lambda (in-pitches bass inversion context) #{
-           \markup {
-             \translate #'(-0.5 . 0)
-             \score {
-               \chords { \transposable #(cons (car (music-pitches mainchord)) (car in-pitches)) { #(music-clone mainchord) \klamm #(music-clone altchord) } }
-               \layout {
-                 \LAYOUT
-                 \context {
-                   \ChordNames
-                   \override ChordName.extra-spacing-width = #'(0 . 0.3)
-                   \override ChordName.stencil = #remove-point-and-click
-                 }
-                 \context {
-                   \Score
-                   \override SpacingSpanner.spacing-increment = 0
-                 }
-               }
-             }
-           }#})))
+  (let* ((chord-name (lambda (in-pitches bass inversion context)
+           (make-line-markup (list
+             (ignatzek-chord-names in-pitches bass inversion context)
+             (make-hspace-markup 0.3)
+             (parenthesis-ignatzek-chord-names (music-pitches (transposable (cons (car (music-pitches mainchord)) (car in-pitches)) (music-clone altchord))) '() '() context)
+             ))
+           )))
     #{
       \once \set chordNameFunction = #chord-name
       #mainchord
     #}))
 
+
 % Akkorde werden so transponiert, dass sie passen, wenn man mit Kapo im angegebenen Bund spielt
 capoTranspose =
 #(define-music-function (fret chords) (number? ly:music?)

private_includes/base/verses_with_chords.ily

@@ -379,6 +379,8 @@ Chord_lyrics_spacing_engraver =
               \override SpacingSpanner.spacing-increment = 0
               % \override SpacingSpanner.packed-spacing = ##t
               \consists \Chord_lyrics_spacing_engraver
+              % ChordPro engraver in Score context to collect all data
+              \consists \ChordPro_score_collector
               \remove Bar_number_engraver
               \remove Mark_engraver
               \remove Jump_engraver

public_includes/layout_bottom.ily

@@ -39,6 +39,20 @@ TEXT = \markuplist {
     TEXT_PAGES
     (list TEXT))))
 
+%% Add invisible ChordPro write trigger to last TEXT_PAGES markuplist
+#(when (and (defined? 'chordpro-export-enabled) chordpro-export-enabled (pair? TEXT_PAGES))
+  (let* ((last-index (- (length TEXT_PAGES) 1))
+         (last-page (list-ref TEXT_PAGES last-index))
+         (modified-last-page #{
+           \markuplist {
+             #last-page
+             \chordpro-delayed-write
+           }
+         #}))
+    (set! TEXT_PAGES
+      (append (list-head TEXT_PAGES last-index)
+              (list modified-last-page)))))
+
 #(define (add-text-pages text-pages)
   (if (pair? text-pages)
     (begin
@@ -55,12 +69,34 @@ TEXT = \markuplist {
     (if header (set! $defaultheader header))
     (if paper (set! $defaultpaper paper))
   )
+
+  ;; ChordPro export: Store filename and extract metadata from basicSongInfo FIRST
+  (when (and (defined? 'chordpro-export-enabled) chordpro-export-enabled)
+    ;; Use ly:parser-output-name which returns the output basename
+    ;; This will write relative to current working directory (same as PDF)
+    (let ((output-name (ly:parser-output-name)))
+      (set! chordpro-current-filename output-name))
+
+    ;; Try to extract metadata from basicSongInfo \header block
+    (when (defined? 'basicSongInfo)
+      (let* ((header-alist (ly:module->alist basicSongInfo))
+             (title (assoc-ref header-alist 'title))
+             (authors (assoc-ref header-alist 'authors)))
+        (when title
+          (set! chordpro-header-title
+                (if (markup? title)
+                    (markup->string title)
+                    (if (string? title) title "Untitled"))))
+        (when authors
+          (set! chordpro-header-authors authors)))))
+
   (add-score #{
     \score {
       \MUSIC
       \layout { \LAYOUT }
     }#})
   (add-text-pages TEXT_PAGES)
+
   (add-score #{
     \score {
       \unfoldRepeats { \MUSIC \INLINESCOREMUSIC }