-;;;; ps-to-png.scm --
+;;;; 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>
+;;;; Copyright (C) 2005--2015 Jan Nieuwenhuizen <janneke@gnu.org>
+;;;;
+;;;; 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/>.
(define-module (scm ps-to-png))
(ice-9 rw)
(srfi srfi-1)
(srfi srfi-13)
- (srfi srfi-14))
-
-;; gettext wrapper for guile < 1.7.2
-(if (defined? 'gettext)
- (define-public _ gettext)
- (define-public (_ x) x))
-
-(define PLATFORM
- (string->symbol
- (string-downcase
- (car (string-tokenize (vector-ref (uname) 0) char-set:letter)))))
+ (srfi srfi-14)
+ (lily)
+ )
(define (re-sub re sub string)
(regexp-substitute/global #f re string 'pre sub 'post))
-(define (gulp-port port max-length)
- (let ((str (make-string max-length)))
- (read-string!/partial str port)
- str))
-
-(define (dir-listing dir-name)
- (define (dir-helper dir lst)
- (let ((e (readdir dir)))
- (if (eof-object? e) lst (dir-helper dir (cons e lst)))))
- (reverse (dir-helper (opendir dir-name) '())))
-
-(define (dir-re dir re)
- (filter (lambda (x) (string-match re x)) (dir-listing dir)))
-
-(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-port (open-file bbox "r") 10240))
- (m (string-match BOUNDING_BOX_RE s)))
- (display m)
- (newline)
- (if m
- (list->vector
- (map (lambda (x) (string->number (car x))) (vector->list m)))
- #f)))
-
-(define-public (make-ps-images ps-name . rest)
- (let-optional
- rest ((resolution 90)
- (paper-size "a4")
- (rename-page-1? #f)
- (verbose? #f))
- (let* ((base (basename (re-sub "[.]e?ps" "" ps-name)))
- (header (gulp-port (open-file ps-name "r") 10240))
- (png1 (string-append base ".png"))
- (pngn (string-append base "-page%d.png"))
- (pngn-re (re-sub "%d" "[0-9]*" pngn))
- (multi-page? (and (string-match "\n%%Pages: " header)
- (not (string-match "\n%%Pages: 1\n" header))))
- (output-file (if multi-page? pngn png1))
-
- ;;png16m is because Lily produces color nowadays.
- (cmd (if multi-page?
- (format #f "gs\
- -dGraphicsAlphaBits=4\
- -dNOPAUSE\
- -dTextAlphaBits=4\
- -sDEVICE=png16m\
- -sOutputFile='~a'\
- -sPAPERSIZE=~a\
- -q\
- -r~S\
- '~a'\
- -c showpage\
- -c quit" output-file paper-size resolution ps-name)
- (format #f "gs\
- -s\
- -dGraphicsAlphaBits=4\
- -dEPSCrop\
- -dNOPAUSE\
- -dTextAlphaBits=4\
- -sDEVICE=png16m\
- -sOutputFile='~a'\
- -q\
- -r~S\
- '~a'\
- -c quit" output-file resolution ps-name)))
- (foo (for-each delete-file (append (dir-re "." png1)
- (dir-re "." pngn-re))))
- (bar (if verbose?
- (begin
- (format (current-error-port) (_ "Invoking `~a'...") cmd)
- (newline (current-error-port)))))
- (baz
- ;; The wrapper on windows cannot handle `=' signs,
- ;; gs has a workaround with #.
- (if (eq? PLATFORM 'windows)
- (begin
- (set! cmd (re-sub "=" "#" cmd))
- (set! cmd (re-sub "-dSAFER " "" cmd)))))
- (status (system cmd)))
- (if (not (= status 0))
- (begin
- (map delete-file
- (append (dir-re "." png1) (dir-re "." pngn-re)))
- (format (current-error-port)
- (format #f (_ "~a exited with status: ~S") "GS" status))
- (exit 1)))
- (if (and rename-page-1? multi-page?)
- (rename (re-sub "%d" "1" pngn) png1))
- (append (dir-re "." png1) (dir-re "." pngn-re)))))
+(define-public (gulp-file file-name . max-size)
+ (ly:gulp-file file-name (if (pair? max-size) (car max-size))))
+
+(define (search-pngtopam)
+ (search-executable
+ (if (eq? PLATFORM 'windows)
+ '("pngtopam.exe" "pngtopnm.exe")
+ '("pngtopam" "pngtopnm"))))
+
+(define (search-pamscale)
+ (search-executable
+ (if (eq? PLATFORM 'windows)
+ '("pamscale.exe" "pnmscale.exe")
+ '("pamscale" "pnmscale"))))
+
+(define (search-pnmtopng)
+ (search-executable
+ (if (eq? PLATFORM 'windows)
+ '("pnmtopng.exe")
+ '("pnmtopng"))))
+
+(define (scale-down-image factor file)
+ (let* ((port-tmp1 (make-tmpfile))
+ (tmp1-name (port-filename port-tmp1))
+ (port-tmp2 (make-tmpfile))
+ (tmp2-name (port-filename port-tmp2))
+ ;; Netpbm commands (pngtopnm, pnmscale, pnmtopng)
+ ;; outputs only standard output instead of a file.
+ ;; So we need pipe and redirection.
+ ;; However, ly:system can't handle them.
+ ;; Therefore, we use ly:system-with-shell.
+ (cmd
+ (ly:format
+ "~a \"~a\" | ~a -reduce ~a | ~a -compression 9 > \"~a\""
+ (search-pngtopam) tmp1-name
+ (search-pamscale) factor
+ (search-pnmtopng)
+ tmp2-name)))
+
+ (close-port port-tmp1)
+ (close-port port-tmp2)
+ (ly:debug (_ "Copying `~a' to `~a'...") file tmp1-name)
+ (copy-binary-file file tmp1-name)
+ (ly:system-with-shell cmd)
+ (ly:debug (_ "Copying `~a' to `~a'...") tmp2-name file)
+ (copy-binary-file tmp2-name file)
+ (ly:debug (_ "Deleting `~a'...") tmp1-name)
+ (delete-file tmp1-name)
+ (ly:debug (_ "Deleting `~a'...") tmp2-name)
+ (delete-file tmp2-name)))
+
+(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)))
+
+(define-public (make-ps-images base-name tmp-name is-eps . rest)
+ (let-keywords*
+ rest #f
+ ((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 #f "~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))))
+ (png1 (format #f "~a.~a" base-name extension))
+ (pngn (format #f "~a-page%d.~a" base-name extension))
+ (page-count (ps-page-count tmp-name))
+ (multi-page? (> page-count 1))
+
+ ;; Escape `%' (except `page%d') for ghostscript
+ (base-name-gs (string-join
+ (string-split base-name #\%)
+ "%%"))
+ (png1-gs (format #f "~a.~a" base-name-gs extension))
+ (pngn-gs (format #f "~a-page%d.~a" base-name-gs extension))
+ (output-file (if multi-page? pngn-gs png1-gs))
+
+ (*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=~$" page-width))
+ (if is-eps
+ *unspecified*
+ (ly:format "-dDEVICEHEIGHTPOINTS=~$" page-height))
+ "-dGraphicsAlphaBits=4"
+ "-dTextAlphaBits=4"
+ "-dNOPAUSE"
+ "-dBATCH"
+ (ly:format "-sDEVICE=~a" pixmap-format)
+ "-dAutoRotatePages=/None"
+ (string-append "-sOutputFile=" output-file)
+ (ly:format "-r~a" (* anti-alias-factor resolution))
+ (string-append "-f" tmp-name))))
+ (files '()))
+
+ (ly:system cmd)
+
+ (set! files
+ (if multi-page?
+ (map
+ (lambda (n)
+ (format #f "~a-page~a.png" base-name (1+ n)))
+ (iota page-count))
+ (list (format #f "~a.png" base-name))))
+
+ (if (and rename-page-1 multi-page?)
+ (begin
+ (rename-file (re-sub "%d" "1" pngn) png1)
+ (set! files
+ (cons png1
+ (cdr files)))
+ ))
+
+ (if (not (= 1 anti-alias-factor))
+ (for-each
+ (lambda (f) (scale-down-image anti-alias-factor f)) files))
+ files)))
projects / lilypond.git / blobdiff