/usr/share/lilypond/2.18.2/scm/backend-library.scm is in lilypond-data 2.18.2-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 | ;;;; This file is part of LilyPond, the GNU music typesetter.
;;;;
;;;; Copyright (C) 2005--2012 Jan Nieuwenhuizen <janneke@gnu.org>
;;;; Han-Wen Nienhuys <hanwen@xs4all.nl>
;;;;
;;;; 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 <http://www.gnu.org/licenses/>.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; backend helpers.
(use-modules (scm ps-to-png)
(scm paper-system)
(ice-9 optargs))
(define-public (ly:system command)
(ly:debug (_ "Invoking `~a'...") (string-join command))
(let ((status (apply ly:spawn command)))
(if (> status 0)
(begin
(ly:warning (_ "`~a' failed (~a)\n") command status)
;; hmmm. what's the best failure option?
(throw 'ly-file-failed)))))
(define-public (sanitize-command-option str)
"Kill dubious shell quoting."
(string-append
"\""
(regexp-substitute/global #f "[^-_ 0-9,.a-zA-Z'\"\\]" str 'pre 'post)
"\""))
(define-public (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-public (search-gs)
;; must be sure that we don't catch stuff from old GUBs.
(search-executable '("gs")))
(define-public (postscript->pdf paper-width paper-height name)
(let* ((pdf-name (string-append
(dir-basename name ".ps" ".eps")
".pdf"))
(is-eps (string-match "\\.eps$" name))
(*unspecified* (if #f #f))
(cmd
(remove (lambda (x) (eq? x *unspecified*))
(list
(search-gs)
(if (ly:get-option 'verbose) *unspecified* "-q")
(if (or (ly:get-option 'gs-load-fonts)
(ly:get-option 'gs-load-lily-fonts)
(eq? PLATFORM 'windows))
"-dNOSAFER"
"-dSAFER")
(if is-eps
"-dEPSCrop"
(ly:format "-dDEVICEWIDTHPOINTS=~$" paper-width))
(if is-eps
*unspecified*
(ly:format "-dDEVICEHEIGHTPOINTS=~$" paper-height))
"-dCompatibilityLevel=1.4"
"-dNOPAUSE"
"-dBATCH"
"-r1200"
"-sDEVICE=pdfwrite"
(string-append "-sOutputFile="
(string-join
(string-split pdf-name #\%)
"%%"))
"-c.setpdfwrite"
(string-append "-f" name)))))
(ly:message (_ "Converting to `~a'...\n") pdf-name)
(ly:system cmd)))
(define-public (postscript->png resolution paper-width paper-height name)
(let* ((verbose (ly:get-option 'verbose))
(rename-page-1 #f))
;; Do not try to guess the name of the png file,
;; GS produces PNG files like BASE-page%d.png.
(ly:message (_ "Converting to ~a...") "PNG")
(make-ps-images name
#:resolution resolution
#:page-width paper-width
#:page-height paper-height
#:rename-page-1 rename-page-1
#:be-verbose verbose
#:anti-alias-factor (ly:get-option 'anti-alias-factor)
#:pixmap-format (ly:get-option 'pixmap-format))
(ly:progress "\n")))
(define-public (postprocess-output paper-book module filename formats)
(let* ((completed (completize-formats formats))
(base (dir-basename filename ".ps" ".eps"))
(intermediate (remove (lambda (x) (member x formats)) completed)))
(for-each (lambda (f)
((eval (string->symbol (format #f "convert-to-~a" f))
module) paper-book filename)) completed)
(if (ly:get-option 'delete-intermediate-files)
(for-each (lambda (f)
(if (file-exists? f) (delete-file f)))
(map (lambda (x) (string-append base "." x)) intermediate)))))
(define-public (completize-formats formats)
(define new-fmts '())
(if (member "png" formats)
(set! formats (cons "ps" formats)))
(if (member "pdf" formats)
(set! formats (cons "ps" formats)))
(for-each (lambda (x)
(if (member x formats) (set! new-fmts (cons x new-fmts))))
'("ps" "pdf" "png"))
(uniq-list (reverse new-fmts)))
(define (header-to-file file-name key value)
(set! key (symbol->string key))
(if (not (equal? "-" file-name))
(set! file-name (string-append file-name "." key)))
(ly:message (_ "Writing header field `~a' to `~a'...")
key
(if (equal? "-" file-name) "<stdout>" file-name))
(if (equal? file-name "-")
(display value)
(let ((port (open-file file-name "w")))
(display value port)
(close-port port)))
(ly:progress "\n")
"")
(define-public (output-scopes scopes fields basename)
(define (output-scope scope)
(string-concatenate
(module-map
(lambda (sym var)
(let ((val (if (variable-bound? var) (variable-ref var) "")))
(if (and (memq sym fields) (string? val))
(header-to-file basename sym val))
""))
scope)))
(string-concatenate (map output-scope scopes)))
(define-public (relevant-book-systems book)
(let ((systems (ly:paper-book-systems book)))
;; skip booktitles.
(if (and (not (ly:get-option 'include-book-title-preview))
(pair? systems)
(ly:prob-property (car systems) 'is-book-title #f))
(cdr systems)
systems)))
(define-public (relevant-dump-systems systems)
(let ((to-dump-systems '()))
(for-each
(lambda (sys)
(if (or (paper-system-title? sys)
(not (pair? to-dump-systems))
(paper-system-title? (car to-dump-systems)))
(set! to-dump-systems (cons sys to-dump-systems))))
systems)
to-dump-systems))
(define missing-stencil-list '())
(define-public (backend-testing output-module)
(define (missing-stencil-expression name)
(begin
(ly:warning (_ "missing stencil expression `~S'") name)
""))
(for-each (lambda (x)
(if (not (module-defined? output-module x))
(begin
(module-define! output-module x
(lambda* (#:optional y . z)
(missing-stencil-expression x)))
(set! missing-stencil-list (cons x missing-stencil-list)))))
(ly:all-stencil-commands)))
(define-public (remove-stencil-warnings output-module)
(for-each
(lambda (x)
(module-remove! output-module x))
missing-stencil-list))
(define (filter-out pred? lst)
(filter (lambda (x) (not (pred? x))) lst))
(define-public (font-name-split font-name)
"Return @code{(FONT-NAME . DESIGN-SIZE)} from @var{font-name} string
or @code{#f}."
(let ((match (regexp-exec (make-regexp "(.*)-([0-9]*)") font-name)))
(if (regexp-match? match)
(cons (match:substring match 1) (match:substring match 2))
(cons font-name-designsize #f))))
;; Example of a pango-physical-font
;; ("Emmentaler-11" "/home/janneke/vc/lilypond/out/share/lilypond/current/fonts/otf/emmentaler-11.otf" 0)
(define-public (pango-pf-font-name pango-pf)
"Return the font-name of the pango physical font @var{pango-pf}."
(list-ref pango-pf 0))
(define-public (pango-pf-file-name pango-pf)
"Return the file-name of the pango physical font @var{pango-pf}."
(list-ref pango-pf 1))
(define-public (pango-pf-fontindex pango-pf)
"Return the fontindex of the pango physical font @var{pango-pf}."
(list-ref pango-pf 2))
(define (pango-font-name pango-font)
(let ((pf-fonts (ly:pango-font-physical-fonts pango-font)))
(if (pair? pf-fonts)
(pango-pf-font-name (car pf-fonts))
"")))
(define-public (define-fonts paper define-font define-pango-pf)
"Return a string of all fonts used in @var{paper}, invoking the functions
@var{define-font} and @var{define-pango-pf} for producing the actual font
definition."
(let* ((font-list (ly:paper-fonts paper))
(pango-fonts (filter ly:pango-font? font-list))
(other-fonts (filter-out ly:pango-font? font-list))
(other-font-names (map ly:font-name other-fonts))
(pango-only-fonts
(filter-out (lambda (x)
(member (pango-font-name x) other-font-names))
pango-fonts)))
(define (font-load-command font)
(let* ((font-name (ly:font-name font))
(designsize (ly:font-design-size font))
(magnification (* (ly:font-magnification font)))
(ops (ly:output-def-lookup paper 'output-scale))
(scaling (* ops magnification designsize)))
(if (equal? font-name "unknown")
(display (list font font-name)))
(define-font font font-name scaling)))
(define (pango-font-load-command pango-font)
(let* ((pf-fonts (ly:pango-font-physical-fonts pango-font))
(pango-pf (if (pair? pf-fonts) (car pf-fonts) '("" "" 0)))
(font-name (pango-pf-font-name pango-pf))
(scaling (ly:output-def-lookup paper 'output-scale)))
(if (equal? font-name "unknown")
(display (list pango-font font-name)))
(define-pango-pf pango-pf font-name scaling)))
(string-append
(string-concatenate (map font-load-command other-fonts))
(string-concatenate (map pango-font-load-command pango-only-fonts)))))
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