X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=scm%2Fps-to-png.scm;h=7b7e3eb157deb3f3d49475a53f8faa13f6edc656;hb=84675bc536af363543bdae1fa422903a977e1ec8;hp=ab0ac5d672adfc01b851b51e10a24006628b7186;hpb=f2deaa09068338dbb59c5bf5f81569c09d528fdc;p=lilypond.git diff --git a/scm/ps-to-png.scm b/scm/ps-to-png.scm index ab0ac5d672..d0f810fafb 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)) @@ -13,184 +24,152 @@ (srfi srfi-1) (srfi srfi-13) (srfi srfi-14) + (lily) ) -;; 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))))) - (define (re-sub re sub string) (regexp-substitute/global #f re string 'pre sub 'post)) -(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))))) - - (let ((path (parse-path (getenv "PATH")))) - (helper path names))) - -(define (search-gs) - (search-executable '("gs-nox" "gs-8.15" "gs"))) - -(define (gulp-port port max-length) - (let ((str (make-string max-length))) - (read-string!/partial str port 0 max-length) - str)) - -(define (gulp-file nm len) - (gulp-port (open-file nm "r") len)) - -;;; ARGH - cuases memory usage to explode with GUILE cvs. - -(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-file d bbox 10240)) - (m (string-match BOUNDING_BOX_RE s))) - - (if m - (list->vector - (map (lambda (x) (string->number (car x))) (vector->list m))) - #f))) - - -;; copy of ly:system. ly:* not available via lilypond-ps2png.scm -(define (my-system be-verbose exit-on-error cmd) - (define status 0) - (if be-verbose - (begin - (format (current-error-port) (_ "Invoking `~a'...") cmd) - (newline (current-error-port)))) - - - (set! status (system cmd)) - - (if (not (= status 0)) - (begin - (format (current-error-port) - (format #f (_ "~a exited with status: ~S") "GS" status)) - (if exit-on-error - (exit 1)))) - - status) - -(define (scale-down-image be-verbose factor file) - (let* ((status 0) - (percentage (* 100 (/ 1.0 factor))) - (old (string-append file ".old"))) - - (rename-file file old) - (my-system be-verbose - #t - (format #f "convert -scale \"~a%\" ~a ~a" percentage old file)) - (delete-file old) - )) - +(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* - ((header (gulp-file ps-name 10240)) - (match (string-match "%%Pages: ([0-9]+)" header)) - (count (if match - (string->number (match:substring match 1)) - 0))) - count)) - -(define-public (make-ps-images ps-name . rest) - (let-optional - rest ((resolution 90) - (paper-size "a4") - (rename-page-1? #f) - (verbose? #f) - (aa-factor 1) - ) - - (let* ((base (basename (re-sub "[.]e?ps" "" ps-name))) - (header (gulp-file ps-name 10240)) - (png1 (string-append base ".png")) - (pngn (string-append base "-page%d.png")) - (page-count (ps-page-count ps-name)) - - (multi-page? (> page-count 1)) - (output-file (if multi-page? pngn png1)) - - ;;png16m is because Lily produces color nowadays. - (gs-variable-options - (if multi-page? - (format #f "-sPAPERSIZE=~a" paper-size) - "-dEPSCrop")) - (cmd (format #f "~a\ - ~a\ - ~a\ - -dGraphicsAlphaBits=4\ - -dTextAlphaBits=4\ - -dNOPAUSE\ - -sDEVICE=png16m\ - -sOutputFile=~S\ - -r~S\ - ~S\ - -c quit" - (search-gs) - (if verbose? "" "-q") - gs-variable-options - output-file - (* aa-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 verbose? #f cmd)) - - (if multi-page? - (set! files - (map - (lambda (n) - (format "~a-page~a.png" base (1+ n))) - (iota page-count))) - (list (format "~a.png" base))) - - (if (not (= 0 status)) - (begin - (map 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 aa-factor)) - (for-each (lambda (f) (scale-down-image verbose? aa-factor f)) - files)) - + (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)))