X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=scm%2Fps-to-png.scm;h=2d429886f30b24ffd0b3f7bef81250e351b9b0f5;hb=47db9a3883d726ca53e2133a3b2298f78dd6a32e;hp=05ee8e8924c92c7fadd19c1be0cfd52f9b0a2b2e;hpb=34d160ac9382afecff5bbf38a391047b31d03329;p=lilypond.git diff --git a/scm/ps-to-png.scm b/scm/ps-to-png.scm index 05ee8e8924..e2a0d6cb20 100644 --- a/scm/ps-to-png.scm +++ b/scm/ps-to-png.scm @@ -1,8 +1,19 @@ -;;;; 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 +;;;; Copyright (C) 2005--2015 Jan Nieuwenhuizen +;;;; +;;;; 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 . (define-module (scm ps-to-png)) @@ -12,12 +23,13 @@ (ice-9 rw) (srfi srfi-1) (srfi srfi-13) - (srfi srfi-14)) + (srfi srfi-14) + (lily) + ) -;; gettext wrapper for guile < 1.7.2 -(if (defined? 'gettext) - (define-public _ gettext) - (define-public (_ x) x)) +;; FIXME: use backend-library for duplicates and stubs; lilypond-ps2png.scm is no more + +(define-public _ gettext) (define PLATFORM (string->symbol @@ -30,9 +42,9 @@ (define (search-executable names) (define (helper path lst) (if (null? (cdr lst)) - (car lst) - (if (search-path path (car lst)) (car lst) - (helper path (cdr lst))))) + (car lst) + (if (search-path path (car lst)) (car lst) + (helper path (cdr lst))))) (let ((path (parse-path (getenv "PATH")))) (helper path names))) @@ -42,107 +54,131 @@ (define (gulp-port port max-length) (let ((str (make-string max-length))) - (read-string!/partial str port) + (read-string!/partial str port 0 max-length) 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-public (gulp-file file-name . max-size) + (ly:gulp-file file-name (if (pair? max-size) (car max-size)))) -(define (dir-re dir re) - (filter (lambda (x) (string-match re x)) (dir-listing dir))) +;; 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 BOUNDING-BOX-RE - "^%%BoundingBox: (-?[0-9]+) (-?[0-9]+) (-?[0-9]+) (-?[0-9]+)") +(define (scale-down-image be-verbose factor file) + (define (with-pbm) + (let* ((status 0) + (old (string-append file ".old"))) -(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))) + (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))) (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 "~a\ + (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)))) + (base (string-join + (string-split (dir-basename ps-name ".ps" ".eps") #\%) + "%%")) + (png1 (format #f "~a.~a" base extension)) + (pngn (format #f "~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 (string-suffix-ci? ".eps" ps-name) + "-dEPSCrop" + (format #f "-dDEVICEWIDTHPOINTS=~,2f -dDEVICEHEIGHTPOINTS=~,2f" + page-width page-height))) + (cmd (ly:format "~a\ ~a\ - -dGraphicsAlphaBits=4\ - -dNOPAUSE\ - -dTextAlphaBits=4\ - -sDEVICE=png16m\ - -sOutputFile='~a'\ - -sPAPERSIZE=~a\ - -r~S\ - '~a'\ - -c showpage\ - -c quit" (search-gs) output-file paper-size resolution ps-name) - (format #f "~a\ ~a\ - -s\ -dGraphicsAlphaBits=4\ - -dEPSCrop\ - -dNOPAUSE\ -dTextAlphaBits=4\ - -sDEVICE=png16m\ - -sOutputFile='~a'\ - -r~S\ - '~a'\ + -dNOPAUSE\ + -sDEVICE=~a\ + -sOutputFile=~S\ + -r~a\ + ~S\ -c quit" - (search-gs) - (if verbose? "" "-q") - 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))))) + (search-gs) + (if be-verbose "" "-q") + gs-variable-options + pixmap-format + output-file + (* anti-alias-factor resolution) ps-name)) + (status 0) + (files '())) + + ;; 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)))) + + (set! status (my-system be-verbose #f cmd)) + + (set! files + (if multi-page? + (map + (lambda (n) + (format #f "~a-page~a.png" base (1+ n))) + (iota page-count)) + (list (format #f "~a.png" base)))) + + (if (not (= 0 status)) + (begin + (for-each delete-file files) + (exit 1))) + + (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 be-verbose anti-alias-factor f)) files)) + files)))