;;;;
;;;; source file of the GNU LilyPond music typesetter
;;;;
-;;;; (c) 2005--2006 Jan Nieuwenhuizen <janneke@gnu.org>
+;;;; (c) 2005--2007 Jan Nieuwenhuizen <janneke@gnu.org>
(define-module (scm ps-to-png))
(read-string!/partial str port 0 max-length)
str))
-(define (gulp-file nm len)
-
- ;; string routines barf when strlen() != string-length,.
- ;; which may happen as side effect of read-string!/partial.
-
- ; (gulp-port (open-file nm "r") len))
- (ly:gulp-file nm len))
-
-
-(define BOUNDING-BOX-RE
- "^%%BoundingBox: (-?[0-9]+) (-?[0-9]+) (-?[0-9]+) (-?[0-9]+)")
-
-(define (get-bbox file-name)
- (let* ((bbox (string-append file-name ".bbox"))
- ;; -sOutputFile does not work with bbox?
- (cmd (format #t "gs\
- -sDEVICE=bbox\
- -q\
- -dNOPAUSE\
- ~S\
- -c showpage\
- -c quit 2>~S"
- file-name bbox))
- (status (system cmd))
- (s (gulp-file d bbox 10240))
- (m (string-match BOUNDING_BOX_RE s)))
-
- (if m
- (list->vector
- (map (lambda (x) (string->number (car x))) (vector->list m)))
- #f)))
-
+(define-public (gulp-file file-name . max-size)
+ (ly:gulp-file file-name (if (pair? max-size) (car max-size))))
;; copy of ly:system. ly:* not available via lilypond-ps2png.scm
(define (my-system be-verbose exit-on-error cmd)
(begin
(format (current-error-port) (_ "Invoking `~a'...") cmd)
(newline (current-error-port))))
-
-
(set! status (system cmd))
-
(if (not (= status 0))
(begin
(format (current-error-port)
(format #f (_ "~a exited with status: ~S") "GS" status))
- (if exit-on-error
- (exit 1))))
-
+ (if exit-on-error (exit 1))))
status)
(define (scale-down-image be-verbose factor file)
- (let* ((status 0)
- (percentage (* 100 (/ 1.0 factor)))
- (old (string-append file ".old")))
-
- (rename-file file old)
- (my-system be-verbose
- #t
- (format #f "convert -scale \"~a%\" ~a ~a" percentage old file))
- (delete-file old)
- ))
+ (define (with-pbm)
+ (let* ((status 0)
+ (old (string-append file ".old")))
+
+ (rename-file file old)
+ (my-system
+ be-verbose #t
+ (format #f
+ "pngtopnm ~a | pnmscale -reduce ~a 2>/dev/null | pnmtopng -compression 9 2>/dev/null > ~a"
+ old factor file))
+ (delete-file old)))
+
+ (with-pbm))
(define-public (ps-page-count ps-name)
- (let*
- ((byte-count 10240)
- (header (gulp-file ps-name byte-count))
- (first-null (string-index header #\nul))
- (match (string-match "%%Pages: ([0-9]+)"
- (if (number? first-null)
- (substring header 0 first-null)
- header))))
-
- (if match
- (string->number (match:substring match 1))
- 0)))
+ (let* ((byte-count 10240)
+ (header (gulp-file ps-name byte-count))
+ (first-null (string-index header #\nul))
+ (match (string-match "%%Pages: ([0-9]+)"
+ (if (number? first-null)
+ (substring header 0 first-null)
+ header))))
+ (if match (string->number (match:substring match 1)) 0)))
(define-public (make-ps-images ps-name . rest)
(let-keywords*
rest #f
- ((resolution 90)
- (page-width 100)
- (page-height 100)
- (rename-page-1 #f)
- (be-verbose #f)
- (pixmap-format 'png16m)
- (anti-alias-factor 1))
-
- (let* (
- (format-str (format "~a" pixmap-format))
+ ((resolution 90)
+ (page-width 100)
+ (page-height 100)
+ (rename-page-1 #f)
+ (be-verbose (ly:get-option 'verbose))
+ (pixmap-format 'png16m)
+ (anti-alias-factor 1))
+
+ (let* ((format-str (format "~a" pixmap-format))
(extension (cond
((string-contains format-str "png") "png")
((string-contains format-str "jpg") "jpeg")
((string-contains format-str "jpeg") "jpeg")
(else
(ly:error "Unknown pixmap format ~a" pixmap-format))))
- (base (basename (re-sub "[.]e?ps" "" ps-name)))
- (png1 (format "~a.~a" base pixmap-format))
- (pngn (format "~a-page%d.~a" base pixmap-format))
+ (base (dir-basename ps-name ".ps" ".eps"))
+ (png1 (format "~a.~a" base extension))
+ (pngn (format "~a-page%d.~a" base extension))
(page-count (ps-page-count ps-name))
(multi-page? (> page-count 1))
(output-file (if multi-page? pngn png1))
(gs-variable-options
(if multi-page?
- (format #f "-dDEVICEWIDTHPOINTS=~,2f -dDEVICEHEIGHTPOINTS=~,2f" page-width page-height)
+ (format #f "-dDEVICEWIDTHPOINTS=~,2f -dDEVICEHEIGHTPOINTS=~,2f"
+ page-width page-height)
"-dEPSCrop"))
-
(cmd (format #f "~a\
~a\
~a\
))
(if (not (= 1 anti-alias-factor))
- (for-each (lambda (f) (scale-down-image be-verbose anti-alias-factor f))
- files))
-
+ (for-each
+ (lambda (f) (scale-down-image be-verbose anti-alias-factor f)) files))
files)))