projects/guix·blob javascript-team · refs

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1;;; GNU Guix --- Functional package management for GNU
2;;; Copyright © 2022 Mathieu Othacehe <[email protected]>
3;;;
4;;; This file is part of GNU Guix.
5;;;
6;;; GNU Guix is free software; you can redistribute it and/or modify it
7;;; under the terms of the GNU General Public License as published by
8;;; the Free Software Foundation; either version 3 of the License, or (at
9;;; your option) any later version.
10;;;
11;;; GNU Guix is distributed in the hope that it will be useful, but
12;;; WITHOUT ANY WARRANTY; without even the implied warranty of
13;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14;;; GNU General Public License for more details.
15;;;
16;;; You should have received a copy of the GNU General Public License
17;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
18
19(define-module (gnu compression)
20 #:use-module (guix gexp)
21 #:use-module (guix ui)
22 #:use-module ((gnu packages compression) #:hide (zip))
23 #:use-module (srfi srfi-1)
24 #:use-module (srfi srfi-9)
25 #:use-module (ice-9 match)
26 #:export (compressor
27 compressor?
28 compressor-name
29 compressor-extension
30 compressor-command
31 %compressors
32 lookup-compressor))
33
34;; Type of a compression tool.
35(define-record-type <compressor>
36 (compressor name extension command)
37 compressor?
38 (name compressor-name) ;string (e.g., "gzip")
39 (extension compressor-extension) ;string (e.g., ".lz")
40 (command compressor-command)) ;gexp (e.g., #~(list "/gnu/store/…/gzip"
41 ; "-9n" ))
42
43(define %compressors
44 ;; Available compression tools.
45 (list (compressor "gzip" ".gz"
46 #~(list #+(file-append gzip "/bin/gzip") "-9n"))
47 (compressor "lzip" ".lz"
48 #~(list #+(file-append lzip "/bin/lzip") "-9"))
49 (compressor "xz" ".xz"
50 #~(append (list #+(file-append xz "/bin/xz")
51 "-e")
52 (%xz-parallel-args)))
53 (compressor "bzip2" ".bz2"
54 #~(list #+(file-append bzip2 "/bin/bzip2") "-9"))
55 (compressor "zstd" ".zst"
56 ;; The default level 3 compresses better than gzip in a
57 ;; fraction of the time, while the highest level 19
58 ;; (de)compresses more slowly and worse than xz.
59 #~(list #+(file-append zstd "/bin/zstd") "-3"
60 (format #f "--threads=~a" (parallel-job-count))))
61 (compressor "none" "" #f)))
62
63(define (lookup-compressor name)
64 "Return the compressor object called NAME. Error out if it could not be
65found."
66 (or (find (match-lambda
67 (($ <compressor> name*)
68 (string=? name* name)))
69 %compressors)
70 (leave (G_ "~a: compressor not found~%") name)))