Imported Upstream version 2.14.2

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

diff --git a/scm/backend-library.scm b/scm/backend-library.scm
index 5fef767162eaefaba4cbbfe854b4250598e4c765..706bccb2de51a29a565501f9c8bbb29975b52fd5 100644 (file)
--- a/scm/backend-library.scm
+++ b/scm/backend-library.scm
@@ -1,24 +1,34 @@
-;;;; 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 Jan Nieuwenhuizen <janneke@gnu.org>
-;;;; Han-Wen Nienhuys <hanwen@cs.uu.nl>
+;;;; Copyright (C) 2005--2011 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.
 
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 
 ;; backend helpers.
 

+(use-modules (scm ps-to-png)
+            (scm paper-system)
+            (ice-9 optargs))
+

 (define-public (ly:system command)
 (define-public (ly:system command)

-  (let* ((status 0)
-        (dev-null "/dev/null")
-        (silenced (if (or (ly:get-option 'verbose)
-                          (not (access? dev-null W_OK)))
-                      command
-                      (format #f "~a > ~a 2>&1 " command dev-null))))
-    (if (ly:get-option 'verbose)
-       (ly:message (_ "Invoking `~a'...") command))
-    
-    (set! status (system silenced))
+  (if (ly:get-option 'verbose)
+      (begin
+       (ly:message (_ "Invoking `~a'...") (string-join command)))
+      (ly:progress "\n"))
+  (let ((status (apply ly:spawn command)))

     (if (> status 0)
        (begin
          (ly:message (_ "`~a' failed (~a)") command status)
     (if (> status 0)
        (begin
          (ly:message (_ "`~a' failed (~a)") command status)


@@ -27,81 +37,102 @@
          (throw 'ly-file-failed)))))
 
 (define-public (sanitize-command-option str)
          (throw 'ly-file-failed)))))
 
 (define-public (sanitize-command-option str)

+  "Kill dubious shell quoting."
+  

   (string-append
    "\""
   (string-append
    "\""

-   (regexp-substitute/global #f "[^- 0-9,.a-zA-Z'\"\\]" str 'pre 'post)
+   (regexp-substitute/global #f "[^-_ 0-9,.a-zA-Z'\"\\]" str 'pre 'post)

    "\""))
 
    "\""))
 

-(define-public (postscript->pdf papersizename name)
-  (let* ((pdf-name (string-append (basename name ".ps") ".pdf" ))
-        (cmd (format #f
-                     "gs\
- -dCompatibilityLevel=1.4 \
- -dSAFER\
- -sPAPERSIZE=~a\
- -q\
- -dNOPAUSE\
- -dBATCH\
- -sDEVICE=pdfwrite\
- -sOutputFile=~S\
- -c .setpdfwrite\
- -f ~S\
-"
-                     (sanitize-command-option papersizename)
-                     pdf-name
-                     name)))
-
-    (if (access? pdf-name W_OK)
-       (delete-file pdf-name))
+(define-public (search-executable names)
+  (define (helper path lst)
+    (if (null? (cdr lst))
+       (car lst)
+       (if (search-path path (car lst)) (car lst)
+           (helper path (cdr lst)))))
+
+  (let ((path (parse-path (getenv "PATH"))))
+    (helper path names)))
+
+(define-public (search-gs)
+  
+  ;; must be sure that we don't catch stuff from old GUBs.
+  (search-executable '("gs")))
+  
+(define-public (postscript->pdf paper-width paper-height name)
+  (let* ((pdf-name (string-append
+                   (dir-basename name ".ps" ".eps")
+                   ".pdf"))
+        (is-eps (string-match "\\.eps$" name))
+        (*unspecified* (if #f #f))
+        (cmd
+         (remove (lambda (x) (eq? x *unspecified*))
+         (list
+              (search-gs)
+              (if (ly:get-option 'verbose) *unspecified* "-q")
+              (if (or (ly:get-option 'gs-load-fonts)
+                      (ly:get-option 'gs-load-lily-fonts)
+                      (eq? PLATFORM 'windows))
+                  "-dNOSAFER"
+                  "-dSAFER")
+
+              (if is-eps
+                  "-dEPSCrop"
+                  (ly:format "-dDEVICEWIDTHPOINTS=~$" paper-width))
+              (if is-eps
+                  *unspecified*
+                  (ly:format "-dDEVICEHEIGHTPOINTS=~$" paper-height))
+              "-dCompatibilityLevel=1.4"
+              "-dNOPAUSE"
+              "-dBATCH"
+              "-r1200"
+              "-sDEVICE=pdfwrite"
+              (string-append "-sOutputFile=" pdf-name)
+              "-c.setpdfwrite"
+              (string-append "-f" name)))))

 
     (ly:message (_ "Converting to `~a'...") pdf-name)
     (ly:progress "\n")
     (ly:system cmd)))
 
 
     (ly:message (_ "Converting to `~a'...") pdf-name)
     (ly:progress "\n")
     (ly:system cmd)))
 

-(define-public (postscript->png resolution papersizename name)
-  (let* ((prefix (ly:effective-prefix))
-
-        ;; run the source, if  we are in the build-directory
-        (ps2png-source (if prefix
-                          (format "~a/scripts/lilypond-ps2png.py" prefix)
-                          "lilypond-ps2png"))
-        (cmd (format #f
-                     "~a --resolution=~S --papersize=~a~a ~S"
-                     (if (file-exists? ps2png-source)
-                         (format "python ~a" ps2png-source)
-                         "lilypond-ps2png")
-                     resolution
-                     (sanitize-command-option papersizename)
-                     (if (ly:get-option 'verbose) " --verbose " "")
-                     name)))
+(define-public (postscript->png resolution paper-width paper-height name)
+  (let* ((verbose (ly:get-option 'verbose))
+        (rename-page-1 #f))
+

     ;; Do not try to guess the name of the png file,
     ;; GS produces PNG files like BASE-page%d.png.
     ;; Do not try to guess the name of the png file,
     ;; GS produces PNG files like BASE-page%d.png.

-    ;;(ly:message (_ "Converting to `~a'...")
-    ;;     (string-append (basename name ".ps") "-page1.png" )))

     (ly:message (_ "Converting to ~a...") "PNG")
     (ly:message (_ "Converting to ~a...") "PNG")

-    (ly:system cmd)
+    (make-ps-images name
+                   #:resolution resolution
+                   #:page-width paper-width
+                   #:page-height paper-height
+                   #:rename-page-1 rename-page-1
+                   #:be-verbose verbose
+                   #:anti-alias-factor (ly:get-option 'anti-alias-factor)
+                   #:pixmap-format (ly:get-option 'pixmap-format))

     (ly:progress "\n")))
 
 (define-public (postprocess-output paper-book module filename formats)
     (ly:progress "\n")))
 
 (define-public (postprocess-output paper-book module filename formats)

-  (for-each
-   (lambda (f)
-     ((eval (string->symbol (string-append "convert-to-" f)) module)
-      paper-book filename))
-   formats))
+  (let* ((completed (completize-formats formats))
+        (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)
+                   (if (file-exists? f) (delete-file f)))
+                 (map (lambda (x) (string-append base "." x)) intermediate)))))

 
 (define-public (completize-formats formats)
   (define new-fmts '())
 
 (define-public (completize-formats formats)
   (define new-fmts '())

-

   (if (member "png" formats)
       (set! formats (cons "ps" formats)))
   (if (member "pdf" formats)
       (set! formats (cons "ps" formats)))
   (if (member "png" formats)
       (set! formats (cons "ps" formats)))
   (if (member "pdf" formats)
       (set! formats (cons "ps" formats)))

-
-  (for-each
-   (lambda (x)
-     (if (member x formats) (set! new-fmts (cons x new-fmts))))
-   '("tex" "dvi" "ps" "pdf" "png"))
-
+  (for-each (lambda (x)
+             (if (member x formats) (set! new-fmts (cons x new-fmts))))
+           '("ps" "pdf" "png"))

   (uniq-list (reverse new-fmts)))
 
 (define (header-to-file file-name key value)
   (uniq-list (reverse new-fmts)))
 
 (define (header-to-file file-name key value)


@@ -113,7 +144,10 @@
              (if (equal? "-" file-name) "<stdout>" file-name))
   (if (equal? file-name "-")
       (display value)
              (if (equal? "-" file-name) "<stdout>" file-name))
   (if (equal? file-name "-")
       (display value)

-      (display value (open-file file-name "w")))
+      (let ((port (open-file file-name "w")))
+       (display value port)
+       (close-port port)))
+

   (ly:progress "\n")
   "")
 
   (ly:progress "\n")
   "")
 


@@ -130,3 +164,112 @@
       scope)))
   (apply string-append (map output-scope scopes)))
 
       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))
+
+(define (filter-out pred? lst)
+  (filter (lambda (x) (not (pred? x))) lst))
+
+(define-public (font-name-split font-name)
+  "Return @code{(FONT-NAME . DESIGN-SIZE)} from @var{font-name} string
+or @code{#f}."
+  (let ((match (regexp-exec (make-regexp "(.*)-([0-9]*)") font-name)))
+    (if (regexp-match? match)
+       (cons (match:substring match 1) (match:substring match 2))
+       (cons font-name-designsize #f))))
+
+;; Example of a pango-physical-font
+;; ("Emmentaler-11" "/home/janneke/vc/lilypond/out/share/lilypond/current/fonts/otf/emmentaler-11.otf" 0)
+(define-public (pango-pf-font-name pango-pf)
+  "Return the font-name of the pango physical font @var{pango-pf}."
+  (list-ref pango-pf 0))
+(define-public (pango-pf-file-name pango-pf)
+  "Return the file-name of the pango physical font @var{pango-pf}."
+  (list-ref pango-pf 1))
+(define-public (pango-pf-fontindex pango-pf)
+  "Return the fontindex of the pango physical font @var{pango-pf}."
+  (list-ref pango-pf 2))
+
+(define (pango-font-name pango-font)
+  (let ((pf-fonts (ly:pango-font-physical-fonts pango-font)))
+    (if (pair? pf-fonts)
+       (pango-pf-font-name (car pf-fonts))
+       "")))
+
+(define-public (define-fonts paper define-font define-pango-pf)
+  "Return a string of all fonts used in @var{paper}, invoking the functions
+@var{define-font} and @var{define-pango-pf} for producing the actual font
+definition."
+
+  (let* ((font-list (ly:paper-fonts paper))
+        (pango-fonts (filter ly:pango-font? font-list))
+        (other-fonts (filter-out ly:pango-font? font-list))
+        (other-font-names (map ly:font-name other-fonts))
+        (pango-only-fonts
+         (filter-out (lambda (x)
+                       (member (pango-font-name x) other-font-names))
+                     pango-fonts)))
+
+  (define (font-load-command font)
+    (let* ((font-name (ly:font-name font))
+          (designsize (ly:font-design-size font))
+          (magnification (* (ly:font-magnification font)))
+          (ops (ly:output-def-lookup paper 'output-scale))
+          (scaling (* ops magnification designsize)))
+      (if (equal? font-name "unknown")
+         (display (list font font-name)))
+      (define-font font font-name scaling)))
+
+  (define (pango-font-load-command pango-font)
+    (let* ((pf-fonts (ly:pango-font-physical-fonts pango-font))
+          (pango-pf (if (pair? pf-fonts) (car pf-fonts) '("" "" 0)))
+          (font-name (pango-pf-font-name pango-pf))
+          (scaling (ly:output-def-lookup paper 'output-scale)))
+      (if (equal? font-name "unknown")
+         (display (list pango-font font-name)))
+      (define-pango-pf pango-pf font-name scaling)))
+
+  (string-append
+   (apply string-append (map font-load-command other-fonts))
+   (apply string-append (map pango-font-load-command pango-only-fonts)))))