(lily)
)
-;; FIXME: use backend-library for duplicates and stubs; lilypond-ps2png.scm is no more
-
-(define-public _ gettext)
-
(define (re-sub re sub string)
(regexp-substitute/global #f re string 'pre sub 'post))
(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)
- (define status 0)
- (ly:debug (_ "Invoking `~a'...\n") cmd)
- (set! status (system cmd))
- (if (not (= status 0))
- (begin
- (ly:error (_ "~a exited with status: ~S") "GS" status)
- (if exit-on-error (exit 1))))
- status)
-
-(define (scale-down-image be-verbose factor file)
- (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 (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)
(pngn (format #f "~a-page%d.~a" base-name extension))
(page-count (ps-page-count tmp-name))
(multi-page? (> page-count 1))
- (output-file (if multi-page? pngn png1))
+
+ ;; 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
"-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))))
(if (not (= 1 anti-alias-factor))
(for-each
- (lambda (f) (scale-down-image be-verbose anti-alias-factor f)) files))
+ (lambda (f) (scale-down-image anti-alias-factor f)) files))
files)))