native scheme yaml parser

private_includes/base/all.ily

@@ -19,7 +19,6 @@
         (string-append (dirname (current-filename)) file-name-separator-string))
       "scm" file-name-separator-string filename
     )))))
-    (scm-load "json_parser.scm")
     (scm-load "resolve_inherits.scm")
     (scm-load "yaml_parser.scm")))
 #(define AUTHOR_DATA (if (defined? 'AUTHOR_DATA) AUTHOR_DATA (parse-yml-file "../../lilypond-song-includes/data/authors.yml")))

private_includes/base/default_songinfo_style.ily

@@ -7,6 +7,7 @@
   poetAndComposerEqualPrefix = "Worte und Weise:"
   voicePrefix = "Stimme:"
   versePrefix = "Strophe:"
+  translationAuthorPrefix = "Übersetzung:"
   translationPrefix = "Übersetzung:"
   pronunciationPrefix = "Aussprache:"
   interludePrefix = "Zwischenspiel:"
@@ -44,8 +45,6 @@
               (year_melody (chain-assoc-get 'songinfo:year_melody props #f))
               (poet-with-year (if (and poet-maybe-with-composer year_text) (string-append poet-maybe-with-composer ", " year_text) poet-maybe-with-composer))
               (composer-with-year (if (and composer year_melody) (string-append composer ", " year_melody) composer))
-              (poet-and-composer-oneliner (if (and poet-with-year composer-with-year) (markup poet-with-year between-poet-and-composer-markup composer-with-year) #f))
-              (current-line-width (chain-assoc-get 'line-width props (ly:output-def-lookup layout 'line-width)))
               (string-with-paragraphs->markuplist (lambda (prefix text)
                 (if text
                   (apply append
@@ -54,16 +53,20 @@
                         (make-wordwrap-internal-markup-list #t
                           #{ \markuplist { $(ly:parser-include-string paragraph) } #}))
                       (ly:regex-split (ly:make-regex "\n[ \t\n]*\n[ \t\n]*") (string-append prefix text))))
-                  '()))))
+                  '())))
+              (poet-and-composer-markup-list
+                (string-with-paragraphs->markuplist "" (string-append
+                  (if poet-with-year (string-append "\n\n" poet-with-year) "")
+                  (if composer-with-year (string-append "\n\n" composer-with-year) "")
+                )))
+              (poet-and-composer-oneliner (if (and poet-with-year composer-with-year) (make-line-markup (cons (cadr poet-and-composer-markup-list) (cons between-poet-and-composer-markup (cddr poet-and-composer-markup-list)))) #f))
+              (current-line-width (chain-assoc-get 'line-width props (ly:output-def-lookup layout 'line-width))))
           (stack-lines DOWN 0.0 (chain-assoc-get 'baseline-skip props)
             (interpret-markup-list layout props
               (append
                 (if (and poet-and-composer-oneliner (< (interval-length (ly:stencil-extent (interpret-markup layout props poet-and-composer-oneliner) X)) current-line-width))
-                  (string-with-paragraphs->markuplist "" poet-and-composer-oneliner)
-                  (string-with-paragraphs->markuplist "" (string-append
-                    (if poet-with-year (string-append "\n\n" poet-with-year) "")
-                    (if composer-with-year (string-append "\n\n" composer-with-year) "")
-                  )))
+                  (list poet-and-composer-oneliner)
+                  poet-and-composer-markup-list)
                 (string-with-paragraphs->markuplist "" (string-append
                   (if copyright (string-append "\n\n© " copyright) "")))
                 (string-with-paragraphs->markuplist "" infotext)

private_includes/base/footer_with_songinfo.ily

@@ -142,7 +142,7 @@
                   ) ", ")
                   (render-partial-contribution-group 'versePrefix versePoetData)
                   (join-present (list
-                    (render-contribution-group (ly:output-def-lookup layout 'translationPrefix) translatorIds)
+                    (render-contribution-group (ly:output-def-lookup layout 'translationAuthorPrefix) translatorIds)
                     year_translation
                   ) ", ")
                   (join-present (list

private_includes/base/scm/json_parser.scm

@@ -1,482 +0,0 @@
-;;; (json parser) --- Guile JSON implementation.
-
-;; Copyright (C) 2013-2020 Aleix Conchillo Flaque <aconchillo@gmail.com>
-;;
-;; This file is part of guile-json.
-;;
-;; guile-json 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.
-;;
-;; guile-json 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 guile-json. If not, see https://www.gnu.org/licenses/.
-
-;;; Commentary:
-
-;; JSON module for Guile
-
-;;; Code:
-
-(define-module (json parser)
-  #:use-module (ice-9 rdelim)
-  #:use-module (ice-9 streams)
-  #:use-module (rnrs io ports)
-  #:export (json->scm
-            json-string->scm
-            json-seq->scm
-            json-seq-string->scm))
-
-;;
-;; Miscellaneuos helpers
-;;
-
-(define (json-exception port)
-  (throw 'json-invalid port))
-
-(define (digit? c)
-  (case c
-    ((#\0 #\1 #\2 #\3 #\4 #\5 #\6 #\7 #\8 #\9) #t)
-    (else #f)))
-
-(define (whitespace? c)
-  (case c
-    ((#\sp #\ht #\lf #\cr) #t)
-    (else #f)))
-
-(define (control-char? ch)
-  (<= (char->integer ch) #x1F))
-
-(define (skip-whitespaces port)
-  (let ((ch (peek-char port)))
-    (cond
-     ((whitespace? ch)
-      (read-char port)
-      (skip-whitespaces port))
-     (else *unspecified*))))
-
-(define (expect-string port expected return)
-  (let loop ((n 0))
-    (cond
-     ;; All characters match.
-     ((= n (string-length expected)) return)
-     ;; Go to next characters.
-     ((eqv? (read-char port) (string-ref expected n))
-      (loop (+ n 1)))
-     ;; Anything else is an error.
-     (else (json-exception port)))))
-
-(define (expect-delimiter port delimiter)
-  (let ((ch (read-char port)))
-    (cond
-     ((not (eqv? ch delimiter)) (json-exception port))
-     ;; Unexpected EOF.
-     ((eof-object? ch) (json-exception port)))))
-
-(define (skip-record-separators port)
-  (when (eqv? #\rs (peek-char port))
-    (read-char port)
-    (skip-record-separators port)))
-
-;;
-;; Number parsing helpers
-;;
-
-(define (expect-digit port)
-  (let ((ch (peek-char port)))
-    (cond
-     ((not (digit? ch)) (json-exception port))
-     ;; Unexpected EOF.
-     ((eof-object? ch) (json-exception port)))))
-
-;; Read + or -, and return 1 or -1 respectively. If something different is
-;; found, return 1.
-(define (read-sign port)
-  (let ((ch (peek-char port)))
-    (cond
-     ((eqv? ch #\+)
-      (read-char port)
-      1)
-     ((eqv? ch #\-)
-      (read-char port)
-      -1)
-     (else 1))))
-
-(define (read-digit-value port)
-  (let ((ch (read-char port)))
-    (cond
-     ((eqv? ch #\0) 0)
-     ((eqv? ch #\1) 1)
-     ((eqv? ch #\2) 2)
-     ((eqv? ch #\3) 3)
-     ((eqv? ch #\4) 4)
-     ((eqv? ch #\5) 5)
-     ((eqv? ch #\6) 6)
-     ((eqv? ch #\7) 7)
-     ((eqv? ch #\8) 8)
-     ((eqv? ch #\9) 9)
-     (else (json-exception port)))))
-
-;; Read digits [0..9].
-(define (read-digits port)
-  (expect-digit port)
-  (let loop ((ch (peek-char port)) (number 0))
-    (cond
-     ((digit? ch)
-      (let ((value (read-digit-value port)))
-        (loop (peek-char port) (+ (* number 10) value))))
-     (else number))))
-
-(define (read-digits-fraction port)
-  (expect-digit port)
-  (let loop ((ch (peek-char port)) (number 0) (length 0))
-    (cond
-     ((digit? ch)
-      (let ((value (read-digit-value port)))
-        (loop (peek-char port) (+ (* number 10) value) (+ length 1))))
-     (else
-      (/ number (expt 10 length))))))
-
-(define (read-exponent port)
-  (let ((ch (peek-char port)))
-    (cond
-     ((or (eqv? ch #\e) (eqv? ch #\E))
-      (read-char port)
-      (let ((sign (read-sign port))
-            (digits (read-digits port)))
-        (if (<= digits 1000) ;; Some maximum exponent.
-            (expt 10 (* sign digits))
-            (json-exception port))))
-     (else 1))))
-
-(define (read-fraction port)
-  (let ((ch (peek-char port)))
-    (cond
-     ((eqv? ch #\.)
-      (read-char port)
-      (read-digits-fraction port))
-     (else 0))))
-
-(define (read-positive-number port)
-  (let* ((number
-          (let ((ch (peek-char port)))
-            (cond
-             ;; Numbers that start with 0 must be a fraction.
-             ((eqv? ch #\0)
-              (read-char port)
-              0)
-             ;; Otherwise read more digits.
-             (else (read-digits port)))))
-         (fraction (read-fraction port))
-         (exponent (read-exponent port))
-         (result (* (+ number fraction) exponent)))
-    (if (and (zero? fraction) (>= exponent 1))
-        result
-        (exact->inexact result))))
-
-(define (json-read-number port)
-  (let ((ch (peek-char port)))
-    (cond
-     ;; Negative numbers.
-     ((eqv? ch #\-)
-      (read-char port)
-      (expect-digit port)
-      (* -1 (read-positive-number port)))
-     ;; Positive numbers.
-     ((digit? ch)
-      (read-positive-number port))
-     ;; Anything else is an error.
-     (else (json-exception port)))))
-
-;;
-;; Object parsing helpers
-;;
-
-(define (read-pair port null ordered)
-  ;; Read key.
-  (let ((key (json-read-string port)))
-    (skip-whitespaces port)
-    (let ((ch (peek-char port)))
-      (cond
-       ;; Skip colon and read value.
-       ((eqv? ch #\:)
-        (read-char port)
-        (cons key (json-read port null ordered)))
-       ;; Anything other than colon is an error.
-       (else (json-exception port))))))
-
-(define (json-read-object port null ordered)
-  (expect-delimiter port #\{)
-  (let loop ((pairs '()) (added #t))
-    (skip-whitespaces port)
-    (let ((ch (peek-char port)))
-      (cond
-       ;; End of object.
-       ((eqv? ch #\})
-        (read-char port)
-        (cond
-         (added (if ordered (reverse! pairs) pairs))
-         (else (json-exception port))))
-       ;; Read one pair and continue.
-       ((eqv? ch #\")
-        (let ((pair (read-pair port null ordered)))
-          (loop (cons pair pairs) #t)))
-       ;; Skip comma and read more pairs.
-       ((eqv? ch #\,)
-        (read-char port)
-        (cond
-         (added (loop pairs #f))
-         (else (json-exception port))))
-       ;; Invalid object.
-       (else (json-exception port))))))
-
-;;
-;; Array parsing helpers
-;;
-
-(define (json-read-array port null ordered)
-  (expect-delimiter port #\[)
-  (skip-whitespaces port)
-  (cond
-   ;; Special case when array is empty.
-   ((eqv? (peek-char port) #\])
-    (read-char port)
-    #())
-   (else
-    ;; Read first element in array.
-    (let loop ((values (list (json-read port null ordered))))
-      (skip-whitespaces port)
-      (let ((ch (peek-char port)))
-        (cond
-         ;; Unexpected EOF.
-         ((eof-object? ch) (json-exception port))
-         ;; Handle comma (if there's a comma there should be another element).
-         ((eqv? ch #\,)
-          (read-char port)
-          (loop (cons (json-read port null ordered) values)))
-         ;; End of array.
-         ((eqv? ch #\])
-          (read-char port)
-          (list->vector (reverse! values)))
-         ;; Anything else other than comma and end of array is wrong.
-         (else (json-exception port))))))))
-
-;;
-;; String parsing helpers
-;;
-
-(define (read-hex-digit->integer port)
-  (let ((ch (read-char port)))
-    (cond
-     ((eqv? ch #\0) 0)
-     ((eqv? ch #\1) 1)
-     ((eqv? ch #\2) 2)
-     ((eqv? ch #\3) 3)
-     ((eqv? ch #\4) 4)
-     ((eqv? ch #\5) 5)
-     ((eqv? ch #\6) 6)
-     ((eqv? ch #\7) 7)
-     ((eqv? ch #\8) 8)
-     ((eqv? ch #\9) 9)
-     ((or (eqv? ch #\A) (eqv? ch #\a)) 10)
-     ((or (eqv? ch #\B) (eqv? ch #\b)) 11)
-     ((or (eqv? ch #\C) (eqv? ch #\c)) 12)
-     ((or (eqv? ch #\D) (eqv? ch #\d)) 13)
-     ((or (eqv? ch #\E) (eqv? ch #\e)) 14)
-     ((or (eqv? ch #\F) (eqv? ch #\f)) 15)
-     (else (json-exception port)))))
-
-(define (read-unicode-value port)
-  (+ (* 4096 (read-hex-digit->integer port))
-      (* 256 (read-hex-digit->integer port))
-      (* 16 (read-hex-digit->integer port))
-      (read-hex-digit->integer port)))
-
-;; Unicode codepoint with surrogates is:
-;;   10000 + (high - D800) + (low - DC00)
-;; which is equivalent to:
-;;  (high << 10) + low - 35FDC00
-;; see
-;;   https://github.com/aconchillo/guile-json/issues/58#issuecomment-662744070
-(define (json-surrogate-pair->unicode high low)
-  (+ (* high #x400) low #x-35FDC00))
-
-(define (read-unicode-char port)
-  (let ((codepoint (read-unicode-value port)))
-    (cond
-     ;; Surrogate pairs. `codepoint` already contains the higher surrogate
-     ;; (between D800 and DC00) . At this point we are expecting another
-     ;; \uXXXX that holds the lower surrogate (between DC00 and DFFF).
-     ((and (>= codepoint #xD800) (< codepoint #xDC00))
-      (expect-string port "\\u" #f)
-      (let ((low-surrogate (read-unicode-value port)))
-        (if (and (>= low-surrogate #xDC00) (< low-surrogate #xE000))
-            (integer->char (json-surrogate-pair->unicode codepoint low-surrogate))
-            (json-exception port))))
-     ;; Reserved for surrogates (we just need to check starting from the low
-     ;; surrogates).
-     ((and (>= codepoint #xDC00) (< codepoint #xE000))
-      (json-exception port))
-     (else (integer->char codepoint)))))
-
-(define (read-control-char port)
-  (let ((ch (read-char port)))
-    (cond
-     ((eqv? ch #\") #\")
-     ((eqv? ch #\\) #\\)
-     ((eqv? ch #\/) #\/)
-     ((eqv? ch #\b) #\bs)
-     ((eqv? ch #\f) #\ff)
-     ((eqv? ch #\n) #\lf)
-     ((eqv? ch #\r) #\cr)
-     ((eqv? ch #\t) #\ht)
-     ((eqv? ch #\u) (read-unicode-char port))
-     (else (json-exception port)))))
-
-(define (json-read-string port)
-  (expect-delimiter port #\")
-  (let loop ((chars '()) (ch (read-char port)))
-    (cond
-     ;; Unexpected EOF.
-     ((eof-object? ch) (json-exception port))
-     ;; Unescaped control characters are not allowed.
-     ((control-char? ch) (json-exception port))
-     ;; End of string.
-     ((eqv? ch #\") (reverse-list->string chars))
-     ;; Escaped characters.
-     ((eqv? ch #\\)
-      (loop (cons (read-control-char port) chars) (read-char port)))
-     ;; All other characters.
-     (else
-      (loop (cons ch chars) (read-char port))))))
-
-;;
-;; Booleans and null parsing helpers
-;;
-
-(define (json-read-true port)
-  (expect-string port "true" #t))
-
-(define (json-read-false port)
-  (expect-string port "false" #f))
-
-(define (json-read-null port null)
-  (expect-string port "null" null))
-
-;;
-;; Main parser functions
-;;
-
-(define (json-read port null ordered)
-  (skip-whitespaces port)
-  (let ((ch (peek-char port)))
-    (cond
-     ;; Unexpected EOF.
-     ((eof-object? ch) (json-exception port))
-     ;; Read JSON values.
-     ((eqv? ch #\t) (json-read-true port))
-     ((eqv? ch #\f) (json-read-false port))
-     ((eqv? ch #\n) (json-read-null port null))
-     ((eqv? ch #\{) (json-read-object port null ordered))
-     ((eqv? ch #\[) (json-read-array port null ordered))
-     ((eqv? ch #\") (json-read-string port))
-     ;; Anything else should be a number.
-     (else (json-read-number port)))))
-
-;;
-;; Public procedures
-;;
-
-(define* (json->scm #:optional (port (current-input-port))
-                    #:key (null 'null) (ordered #f) (concatenated #f))
-  "Parse a JSON document into native. Takes one optional argument,
-@var{port}, which defaults to the current input port from where the JSON
-document is read. It also takes a few of keyword arguments: @{null}: value for
-JSON's null, it defaults to the 'null symbol, @{ordered} to indicate whether
-JSON objects order should be preserved or not (the default) and @{concatenated}
-which can be used to tell the parser that more JSON documents might come after a
-properly parsed document."
-  (let loop ((value (json-read port null ordered)))
-    ;; Skip any trailing whitespaces.
-    (skip-whitespaces port)
-    (cond
-     ;; If we reach the end the parsing succeeded.
-     ((eof-object? (peek-char port)) value)
-     ;; If there's anything else other than the end, check if user wants to keep
-     ;; parsing concatenated valid JSON documents, otherwise parser fails.
-     (else
-      (cond (concatenated value)
-            (else (json-exception port)))))))
-
-(define* (json-string->scm str #:key (null 'null) (ordered #f))
-  "Parse a JSON document into native. Takes a string argument,
-@var{str}, that contains the JSON document. It also takes a couple of keyword
-argument: @{null}: value for JSON's null, it defaults to the 'null symbol and
-@{ordered} to indicate whether JSON objects order should be preserved or
-not (the default)."
-  (call-with-input-string str (lambda (p) (json->scm p #:null null #:ordered ordered))))
-
-(define* (json-seq->scm #:optional (port (current-input-port))
-                        #:key (null 'null) (ordered #f)
-                        (handle-truncate 'skip) (truncated-object 'truncated))
-  "Lazy parse a JSON text sequence from the port @var{port}.
-This procedure returns a stream of parsed documents. The optional argument
-@var{port} defines the port to read from and defaults to the current input
-port. It also takes a few keyword arguments: @{null}: value for JSON's null
-(defaults to the 'null symbol), @{ordered} to indicate whether JSON objects
-order should be preserved or not (the default), @{handle-truncate}: defines how
-to handle data loss, @{truncated-object}: used to replace unparsable
-objects. Allowed values for @{handle-truncate} argument are 'throw (throw an
-exception), 'stop (stop parsing and end the stream), 'skip (default, skip
-corrupted fragment and return the next entry), 'replace (skip corrupted fragment
-and return @{truncated-object} instead)."
-  (letrec ((handle-truncation
-            (case handle-truncate
-              ((throw) json-exception)
-              ((stop) (const (eof-object)))
-              ((skip)
-               (lambda (port)
-                 (read-delimited "\x1e" port 'peek)
-                 (read-entry port)))
-              ((replace)
-               (lambda (port)
-                 (read-delimited "\x1e" port 'peek)
-                 truncated-object))))
-           (read-entry
-            (lambda (port)
-              (let ((ch (read-char port)))
-                (cond
-                 ((eof-object? ch) ch)
-                 ((not (eqv? ch #\rs))
-                  (handle-truncation port))
-                 (else
-                  (skip-record-separators port)
-                  (catch 'json-invalid
-                    (lambda ()
-                      (let ((next (json-read port null ordered)))
-                        (if (eqv? #\lf (peek-char port))
-                            (begin
-                              (read-char port)
-                              next)
-                            (handle-truncation port))))
-                    (lambda (_ port)
-                      (handle-truncation port)))))))))
-    (port->stream port read-entry)))
-
-(define* (json-seq-string->scm str #:key (null 'null) (ordered #f)
-                               (handle-truncate 'skip) (truncated-object 'truncated))
-  "Lazy parse a JSON text sequence from the string @var{str}.
-This procedure returns a stream of parsed documents and also takes the same
-keyword arguments as @code{json-seq->scm}."
-  (call-with-input-string str
-    (lambda (p)
-      (json-seq->scm p #:null null #:ordered ordered
-                     #:handle-truncate handle-truncate
-                     #:truncated-object truncated-object))))
-
-;;; (json parser) ends here

private_includes/base/scm/yaml_parser.scm

@@ -1,25 +1,152 @@
-(if (not windows?) (use-modules (ice-9 popen)))
-(use-modules (ice-9 textual-ports) (json parser))
+(use-modules (ice-9 rdelim) (ice-9 regex) (ice-9 pretty-print) (srfi srfi-1))
 
-; We use Python to convert the data yamls like the authors.yml to json, that we can parse in scheme.
-; Windows does not like Pipes, so we use a tmpfile instead.
-; Be sure you have PyYAML installed. On Windows that could be done for example like "py -m pip install PyYAML"
+;; Utility: Zeile einlesen
+(define (read-lines filename)
+  (call-with-input-file filename
+    (lambda (port)
+      (let loop ((lines '()))
+        (let ((line (read-line port)))
+          (if (eof-object? line)
+              (reverse lines)
+              (let ((clean (string-trim line)))
+                (if (or (string=? clean "---") (string-null? clean))
+                    (loop lines) ;; Ignoriere "---" oder leere Zeile
+                    (loop (cons line lines))))))))))
+
+;; Einrückung bestimmen (Anzahl Leerzeichen am Anfang)
+(define (line-indent line)
+  (let ((match (string-match "^ *" line)))
+    (if match
+        (match:end match)  ; Anzahl der Leerzeichen = Position nach Leerzeichen
+        0)))               ; Falls kein Match → 0
+
+;; Kommentar entfernen
+(define (strip-comment line)
+  (let ((m (string-match "#.*" line)))
+    (if m
+        (string-trim-right (string-take line (match:start m)))
+        line)))
+
+;; Hilfsfunktion: Whitespace entfernen
+(define (clean-line line)
+  (string-trim (strip-comment line)))
+
+;; Ist Zeile leer (nach Entfernen von Kommentar & Whitespace)?
+(define (blank-or-comment? line)
+  (string-null? (clean-line line)))
+
+;; Skalare Werte interpretieren
+(define (parse-scalar str)
+  (define (strip-quotes s)
+    (cond
+     ((and (string-prefix? "\"" s) (string-suffix? "\"" s))
+      (string-drop-right (string-drop s 1) 1))
+     ((and (string-prefix? "'" s) (string-suffix? "'" s))
+      (string-drop-right (string-drop s 1) 1))
+     (else s)))
+  (let ((s (strip-quotes (string-trim str))))
+    (cond
+     ((string=? s "{}") '())  ;; leere Map
+     ((string=? s "[]") '())  ;; leere Liste
+     ((string-match "^[0-9]+$" s) (string->number s))
+     ((string=? s "true") #t)
+     ((string=? s "false") #f)
+     ((string=? s "null") '())
+     (else s))))
+
+;; Hauptparsingfunktion
 (define (yml-file->scm filename)
-  (if windows?
-    (let* ((port (make-tmpfile #f))
-            (tmpfilepath (port-filename port))
-            (ignore (close-port port))
-            (python_code (string-append "import sys, yaml, json; f = open(r'" tmpfilepath "', 'w'); f.write(json.dumps(yaml.safe_load(open(r'" filename "')))); f.close()"))
-            (status (system (string-append (search-executable '("python3" "python" "py")) " -X utf8 -c \"" python_code "\"")))
-            (readport (open-file tmpfilepath "r" #:encoding "UTF-8"))
-            (json (get-string-all readport)))
-      (close-port readport)
-      (delete-file tmpfilepath)
-      (json-string->scm (if (status:exit-val status) json "{}")))
-    (let* ((python_code (string-append "import sys, yaml, json; print(json.dumps(yaml.safe_load(open(r'" filename "'))))"))
-            (pipe (open-pipe (string-append "PYTHONHOME='' " (search-executable '("python3" "python" "py")) " -X utf8 -c \"" python_code "\"") OPEN_READ))
-            (json (get-string-all pipe)))
-      (close-pipe pipe)
-      (json-string->scm json))))
+  (let ((lines (read-lines filename)))
+    (parse-lines lines 0)))
+
+;; Hilfsfunktion: Zeilen mit gleicher oder höherer Einrückung sammeln
+(define (take-indented lines min-indent)
+  (let loop ((ls lines) (acc '()))
+    (if (null? ls)
+        (reverse acc)
+        (let ((line (car ls)))
+          (if (or (blank-or-comment? line)
+                  (>= (line-indent line) min-indent))
+              (loop (cdr ls) (cons line acc))
+              (reverse acc))))))
+
+;; Hilfsfunktion: N Zeilen überspringen
+(define (drop lst n)
+  (let loop ((l lst) (i n))
+    (if (or (zero? i) (null? l))
+        l
+        (loop (cdr l) (- i 1)))))
+
+;; Listenparsing: Liest Zeilen mit `-` als Listeneinträge
+(define (parse-list lines current-indent)
+  (let loop ((ls lines) (result '()))
+    (if (null? ls)
+        (reverse result)
+        (let* ((line (clean-line (car ls))))
+          (if (string-match "^-" line)
+              (let* ((indent (line-indent (car ls)))
+                     (item-str (string-trim (string-drop line 1)))
+                     (next-lines (cdr ls)))
+                (if (or (null? next-lines)
+                        (> (line-indent (car next-lines)) indent))
+                    ;; Verschachtelter Inhalt
+                    (let* ((sub (take-indented next-lines (+ indent 2)))
+                           (parsed (if (null? sub)
+                                       (parse-scalar item-str)
+                                       (parse-lines sub (+ indent 2))))
+                           (remaining (drop next-lines (length sub))))
+                      (loop remaining (cons parsed result)))
+                    ;; Einfacher Skalar
+                    (loop next-lines (cons (parse-scalar item-str) result))))
+              ;; Nicht mehr Teil der Liste
+              (reverse result))))))
+
+;; Hauptparser für Key-Value oder Listen
+(define (parse-lines lines current-indent)
+  (let loop ((ls lines) (result '()))
+    (if (null? ls)
+        (reverse result)
+        (let* ((raw-line (car ls))
+               (line (clean-line raw-line)))
+          (cond
+           ;; Kommentar oder leere Zeile
+           ((blank-or-comment? raw-line)
+            (loop (cdr ls) result))
+
+           ;; Liste
+           ((string-match "^- " line)
+            (let ((list-lines (take-indented ls current-indent)))
+              (let ((parsed-list (parse-list list-lines current-indent)))
+                (loop (drop ls (length list-lines))
+                      (cons parsed-list result)))))
+
+           ;; Key: Value
+           ((string-match "^[^:]+:" line)
+            (let* ((kv (string-split line #\:))
+                   (key (string-trim (car kv)))
+                   (value-str (string-trim (string-join (cdr kv) ":")))
+                   (next-lines (cdr ls)))
+              (if (string-null? value-str)
+                  ;; Wert auf nachfolgender Einrückungsebene
+                  (let* ((sub (take-indented next-lines (+ current-indent 2)))
+                         (parsed (parse-lines sub (+ current-indent 2)))
+                         (remaining (drop next-lines (length sub))))
+                    (loop remaining
+                          (cons (cons key parsed) result)))
+                  ;; Einfacher Key:Value
+                  (loop next-lines
+                        (cons (cons key (parse-scalar value-str)) result)))))
+
+           ;; Fehlerhafte Zeile
+           (else
+             ;; Vermeide Fehlermeldung für Leerzeilen oder leere Objekte
+             (if (or (string-null? (string-trim line))
+                     (member line '("{}" "[]")))
+                 (loop (cdr ls) result)
+                 (begin
+                   (format (current-error-port)
+                           "Syntaxfehler: Ungültige Zeile: ~a\n" raw-line)
+                   (loop (cdr ls) result))))
+           )))))
 
 (define (parse-yml-file filename) (resolve-inherits (yml-file->scm filename)))

private_includes/book/toc_include.ily

@@ -56,11 +56,11 @@
 
 #(let ((index-item-list (list)))
    (set! add-index-item!
-   (lambda* (markup-symbol text sorttext #:optional (label (gensym "index")))
+   (lambda* (markup-symbol textoptions sorttext #:optional (label (gensym "index")))
        (set! index-item-list
        ;; We insert index items sorted from the beginning on and do
        ;; not sort them later - this saves pretty much computing time
-       (insert-alphabetical-sorted! (list label markup-symbol text
+       (insert-alphabetical-sorted! (list label markup-symbol textoptions
         ;; this crazy hack is necessary because lilypond depends on guile 1.8 atm
         ;; and so the cool unicode conversion functions cannot be used
           (ly:string-substitute " " ""
@@ -92,20 +92,20 @@
           (cons (car ilist) (insert-alphabetical-sorted! iitem (cdr ilist))))))
 
 % code for category index
-#(define*-public (add-category-index-item! categories markup-symbol text #:optional label) #f)
+#(define*-public (add-category-index-item! categories markup-symbol textoptions #:optional label) #f)
 #(define-public (category-index-items) #f)
 
 #(let ((category-index-hash (make-hash-table)))
    (set! add-category-index-item!
-   (lambda* (categories markup-symbol text #:optional (label (gensym "index")))
+   (lambda* (categories markup-symbol textoptions #:optional (label (gensym "index")))
      (for-each (lambda (category)
             (let* ((catsym (string->symbol category))
                    (catlist (hashq-ref category-index-hash catsym
-                              (list (list label 'indexCategoryMarkup category)))))
+                              (list (list label 'indexCategoryMarkup `(((rawtext . ,category))))))))
               (if (assq catsym category-names)
                 (hashq-set! category-index-hash catsym
-                  (cons (list label markup-symbol text) catlist))
-                (ly:error "song: <~a> category ~a is not defined!" (markup->string text) category))))
+                  (cons (list label markup-symbol textoptions) catlist))
+                (ly:error "song: <~a> category ~a is not defined!" (markup->string (chain-assoc-get 'rawtext textoptions)) category))))
        categories)
        (make-music 'EventChord
          'page-marker #t
@@ -121,13 +121,13 @@
 
 #(let ((author-index-hash (make-hash-table)))
    (set! add-author-index-item!
-   (lambda* (authorIDs markup-symbol text #:optional (label (gensym "index")))
+   (lambda* (authorIDs markup-symbol textoptions #:optional (label (gensym "index")))
      (for-each (lambda (authorID)
             (let* ((authorsym (string->symbol authorID))
                    (authorlist (hashq-ref author-index-hash authorsym
-                              (list (list label 'indexAuthorMarkup authorID)))))
+                              (list (list label 'indexAuthorMarkup `(((rawtext . ,authorID))))))))
                 (hashq-set! author-index-hash authorsym
-                  (cons (list label markup-symbol text) authorlist))
+                  (cons (list label markup-symbol textoptions) authorlist))
                 ))
        authorIDs)
        (make-music 'EventChord