X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;ds=inline;f=scm%2Fbackend-library.scm;h=90c0cd07edfa725620e215eb4ba89d20fad9323d;hb=35c150fac724457b125d6cdb82124b57fee05659;hp=301868cb84d66baf54838e71738b45ec19a3ddbf;hpb=f1e0978228298d3062f957b5b773ea2574859932;p=lilypond.git

diff --git a/scm/backend-library.scm b/scm/backend-library.scm
index 301868cb84..90c0cd07ed 100644
--- a/scm/backend-library.scm
+++ b/scm/backend-library.scm
@@ -1,13 +1,28 @@
-;;;; 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)
   (let* ((status 0)
 	 (dev-null "/dev/null")
@@ -82,7 +97,7 @@
  -dDEVICEHEIGHTPOINTS=~$"
 					paper-width paper-height)))
 
-	 (cmd (simple-format #f
+	 (cmd (ly:format
 		      "~a\
  ~a\
  ~a\
@@ -118,8 +133,6 @@
     (ly:progress "\n")
     (ly:system cmd)))
 
-(use-modules (scm ps-to-png))
-
 (define-public (postscript->png resolution paper-width paper-height name)
   (let* ((verbose (ly:get-option 'verbose))
 	 (rename-page-1 #f))
@@ -139,15 +152,15 @@
 
 (define-public (postprocess-output paper-book module filename formats)
   (let* ((completed (completize-formats formats))
-	 (base (string-regexp-substitute "\\.[a-z]+$" "" filename))
+	 (base (dir-basename filename ".ps" ".eps"))
 	 (intermediate (remove (lambda (x) (member x formats)) completed)))
-    
     (for-each (lambda (f)
 		((eval (string->symbol (format "convert-to-~a" f))
 		       module) paper-book filename)) completed)
     (if (ly:get-option 'delete-intermediate-files)
 	(for-each (lambda (f)
-		    (delete-file (string-append base "." f))) intermediate))))
+		    (if (file-exists? f) (delete-file f)))
+		  (map (lambda (x) (string-append base "." x)) intermediate)))))
 
 (define-public (completize-formats formats)
   (define new-fmts '())
@@ -189,3 +202,46 @@
       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)
+  (define (missing-stencil-expression name)
+    (begin
+      (ly:warning (_ "missing stencil expression `~S'") name)
+      ""))
+
+  (map (lambda (x)
+	 (if (not (module-defined? output-module x))
+	     (begin
+	       (module-define! output-module x
+			       (lambda* (#:optional y . z)
+				 (missing-stencil-expression x)))
+	       (set! missing-stencil-list (append (list x)
+						  missing-stencil-list)))))
+       (ly:all-stencil-commands)))
+
+(define-public (remove-stencil-warnings output-module)
+  (for-each
+    (lambda (x)
+      (module-remove! output-module x))
+    missing-stencil-list))