Web-ja: update introduction

[lilypond.git] / scm / framework-ps.scm

diff --git a/scm/framework-ps.scm b/scm/framework-ps.scm
index b26e9d40c9077058448386af6d3311dc2ef4e0ed..2cd9b5edc619bd6e067081cbbd521a30a65ef386 100644 (file)
--- a/scm/framework-ps.scm
+++ b/scm/framework-ps.scm
@@ -309,7 +309,8 @@
 
     (define (ps-load-file file-name)
       (if (string? file-name)
-          (if (string-contains file-name (ly:get-option 'datadir))
+          (if (and (not (ly:get-option 'font-export-dir))
+                   (string-contains file-name (ly:get-option 'datadir)))
               (begin
                 (set! file-name (ly:string-substitute (ly:get-option 'datadir)
                                                       "" file-name))
@@ -494,6 +495,40 @@
            (pfas (map font-loader font-names)))
       pfas))
 
+  (define (font-export name body)
+    (let* ((filename (format #f "~a/~a.font.ps"
+                             (ly:get-option 'font-export-dir)
+                             name))
+           (port-excl
+            (catch
+             'system-error
+             (lambda ()
+               ;; Exclusive file create:
+               ;; When the file already exists, it raises system-error.
+               (open filename (logior O_WRONLY O_CREAT O_EXCL)))
+             (lambda stuff
+               ;; Catch the system-error
+               (let ((errno (system-error-errno stuff)))
+                 (cond
+                  ;; If the file already exists, return #f.
+                  ((= errno EEXIST)
+                   (begin
+                     (ly:debug
+                       (_ "Font file `~a' already exists, skipping.")
+                       filename)
+                     #f))
+                  ;; If the cause is something else, re-throw the error.
+                  (#t
+                   (throw 'system-error (cdr stuff)))))))))
+      (if port-excl
+          ;; MinGW hack: need to have "b"inary for fonts
+          (let ((port (open-file filename "wb")))
+            (close port-excl)
+            (ly:debug (_ "Exporting font file `~a'.") filename)
+            (format port "%%BeginFont: ~a\n" name)
+            (display body port)
+            (display "%%EndFont\n" port)
+            (close-port port)))))
 
   (display "%%BeginProlog\n" port)
   (format
@@ -501,11 +536,31 @@
    "/lilypond-datadir where {pop} {userdict /lilypond-datadir (~a) put } ifelse"
    (ly:get-option 'datadir))
   (set! never-embed-font-list (list))
+  (if (ly:get-option 'font-export-dir)
+      (let ((dirname (format #f "~a" (ly:get-option 'font-export-dir))))
+        (ly:debug
+         (_ "Making font export directory `~a'.") dirname)
+        (catch
+         'system-error
+         (lambda ()
+           ;; mkdir:
+           ;; When the directory already exists, it raises system-error.
+           (mkdir dirname))
+         (lambda stuff
+           ;; Catch the system-error
+           (if (= EEXIST (system-error-errno stuff))
+               ;; If the directory already exists, avoid error.
+               (ly:debug
+                (_ "Font export directory `~a' already exists.") dirname)
+               ;; If the cause is something else, re-throw the error.
+               (throw 'system-error (cdr stuff)))))))
   (if load-fonts?
       (for-each (lambda (f)
                   (format port "\n%%BeginFont: ~a\n" (car f))
                   (display (cdr f) port)
-                  (display "%%EndFont\n" port))
+                  (display "%%EndFont\n" port)
+                  (if (ly:get-option 'font-export-dir)
+                      (font-export (car f) (cdr f))))
                 (load-fonts paper)))
   (if (ly:get-option 'gs-never-embed-fonts)
       (begin
@@ -544,8 +599,14 @@
   (define (metadata-encode val)
     ;; First, call ly:encode-string-for-pdf to encode the string (latin1 or
     ;; utf-16be), then escape all parentheses and backslashes
-    ;; FIXME guile-2.0: use (string->utf16 str 'big) instead
-
+    ;;
+    ;; NOTE: with guile-2.0+ ly:encode-string-for-pdf is not really needed and
+    ;; could be replaced with the following code:
+    ;;
+    ;;    (let* ((utf16be-bom #vu8(#xFE #xFF)))
+    ;;      (string-append (bytevector->string utf16be-bom "ISO-8859-1")
+    ;;                     (bytevector->string (string->utf16 val 'big) "ISO-8859-1")))
+    ;;
     (ps-quote (ly:encode-string-for-pdf val)))
   (define (metadata-lookup-output overridevar fallbackvar field)
     (let* ((overrideval (ly:modules-lookup (list header) overridevar))