'("pnmtopng"))))
(define (scale-down-image factor file)
- (let* ((old (string-append file ".old"))
+ (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 /bin/sh for handling them.
- ;; FIXME: MinGW (except Cygwin) doesn't have /bin/sh.
+ ;; Therefore, we use ly:system-with-shell.
(cmd
- (list
- "/bin/sh"
- "-c"
- (ly:format
- "pngtopnm \"~a\" | pnmscale -reduce ~a | pnmtopng -compression 9 > \"~a\""
- old factor file))))
-
- (rename-file file old)
- (ly:system cmd)
- (delete-file old)))
+ (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)
"-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))))