'("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.
(cmd
(ly:format
"~a \"~a\" | ~a -reduce ~a | ~a -compression 9 > \"~a\""
- (search-pngtopam) old
+ (search-pngtopam) tmp1-name
(search-pamscale) factor
(search-pnmtopng)
- file)))
+ tmp2-name)))
- (rename-file file old)
+ (copy-binary-file file tmp1-name)
(ly:system-with-shell cmd)
- (delete-file old)))
+ (copy-binary-file tmp2-name file)
+ (delete-file tmp1-name)
+ (delete-file tmp2-name)))
(define-public (ps-page-count ps-name)
(let* ((byte-count 10240)