Merge branch 'master' into lilypond/translation

[lilypond.git] / scm / backend-library.scm

diff --git a/scm/backend-library.scm b/scm/backend-library.scm
index 3a4ccab817871d821b3e6641e1b0e4d044191e2f..cc689d848273502ada9073aa84e05880d9a82a77 100644 (file)
--- a/scm/backend-library.scm
+++ b/scm/backend-library.scm
@@ -1,14 +1,26 @@
-;;;; backend-library.scm -- helpers for the backends.
+;;;; This file is part of LilyPond, the GNU music typesetter.
 ;;;;
-;;;;  source file of the GNU LilyPond music typesetter
-;;;; 
-;;;; (c) 2005--2009 Jan Nieuwenhuizen <janneke@gnu.org>
+;;;; Copyright (C) 2005--2010 Jan Nieuwenhuizen <janneke@gnu.org>
 ;;;; 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/>.
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 
 ;; backend helpers.
 
 (use-modules (scm ps-to-png)
+            (scm paper-system)
             (ice-9 optargs))
 
 (define-public (ly:system command . rest)
@@ -85,7 +97,7 @@
  -dDEVICEHEIGHTPOINTS=~$"
                                        paper-width paper-height)))
 
-        (cmd (simple-format #f
+        (cmd (ly:format
                      "~a\
  ~a\
  ~a\
@@ -113,9 +125,7 @@
     (if (eq? PLATFORM 'windows)
        (begin
          (set! cmd (string-regexp-substitute "=" "#" cmd))
-         (set! cmd (string-regexp-substitute "-dSAFER " "" cmd))
-         (if (access? pdf-name W_OK)
-             (delete-file pdf-name))))
+         (set! cmd (string-regexp-substitute "-dSAFER " "" cmd))))
 
     (ly:message (_ "Converting to `~a'...") pdf-name)
     (ly:progress "\n")
@@ -190,6 +200,26 @@
       scope)))
   (apply string-append (map output-scope scopes)))
 
+(define-public (relevant-book-systems book)
+  (let ((systems (ly:paper-book-systems book)))
+    ;; skip booktitles.
+    (if (and (not (ly:get-option 'include-book-title-preview))
+            (pair? systems)
+            (ly:prob-property (car systems) 'is-book-title #f))
+       (cdr systems)
+       systems)))
+
+(define-public (relevant-dump-systems systems)
+  (let ((to-dump-systems '()))
+    (for-each
+      (lambda (sys)
+       (if (or (paper-system-title? sys)
+               (not (pair? to-dump-systems))
+               (paper-system-title? (car to-dump-systems)))
+           (set! to-dump-systems (cons sys to-dump-systems))))
+      systems)
+    to-dump-systems))
+
 (define missing-stencil-list '())
 
 (define-public (backend-testing output-module)