;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2013, 2015, 2021 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2018 Efraim Flashner <efraim@flashner.co.il>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix 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.
;;;
;;; GNU Guix 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 GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu packages idutils)
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module (guix build-system gnu)
  #:use-module (guix licenses)
  #:use-module (gnu packages emacs)
  #:use-module (gnu packages))

(define-public idutils
  (package
    (name "idutils")
    (version "4.6")
    (source (origin
             (method url-fetch)
             (uri (string-append "mirror://gnu/idutils/idutils-"
                                 version ".tar.xz"))
             (sha256
              (base32
               "1hmai3422iaqnp34kkzxdnywl7n7pvlxp11vrw66ybxn9wxg90c1"))
             (modules '((guix build utils)))
             (snippet
              '(begin
                 (substitute* (find-files "lib" "\\.c$")
                   (("#if defined _IO_ftrylockfile")
                    "#if defined _IO_EOF_SEEN"))
                 (substitute* "lib/stdio-impl.h"
                   (("^/\\* BSD stdio derived implementations")
                    (string-append "#if !defined _IO_IN_BACKUP && defined _IO_EOF_SEEN\n"
                                   "# define _IO_IN_BACKUP 0x100\n"
                                   "#endif\n\n"
                                   "/* BSD stdio derived implementations")))

                 ;; 'gets' is deprecated in glibc 2.33 and its declaration is
                 ;; no longer visible by default from <stdio.h>.
                 (substitute* "lib/stdio.in.h"
                   (("_GL_WARN_ON_USE \\(gets.*") ""))))))
    (build-system gnu-build-system)
    (arguments
     ;; XXX: These Gnulib tests fail with GCC 10 and glibc 2.33; skip them.
     '(#:make-flags '("XFAIL_TESTS=test-sprintf-posix test-isnanl-nolibm")))
    (native-inputs `(("emacs" ,emacs-minimal)))
    (home-page "https://www.gnu.org/software/idutils/")
    (synopsis "Identifier database utilities")
    (description
     "The GNU idutils package includes tools to create an index of textual
tokens used in a list of file names and then to query that index.  Thus, it
allows the user to, for example, find all the uses of a particular function
in a large programming project.  In addition to handling textual tokens, it
can also handle numeric constants and the contents of character strings.")
    (license gpl3+)))
mand
            %compressors
            lookup-compressor))

;; Type of a compression tool.
(define-record-type &lt;compressor&gt;
  (compressor name extension command)
  compressor?
  (name       compressor-name)      ;string (e.g., &quot;gzip&quot;)
  (extension  compressor-extension) ;string (e.g., &quot;.lz&quot;)
  (command    compressor-command))  ;gexp (e.g., #~(list &quot;/gnu/store/…/gzip&quot;
                                    ;                    &quot;-9n&quot; ))

(define %compressors
  ;; Available compression tools.
  (list (compressor &quot;gzip&quot;  &quot;.gz&quot;
                    #~(list #+(file-append gzip &quot;/bin/gzip&quot;) &quot;-9n&quot;))
        (compressor &quot;lzip&quot;  &quot;.lz&quot;
                    #~(list #+(file-append lzip &quot;/bin/lzip&quot;) &quot;-9&quot;))
        (compressor &quot;xz&quot;    &quot;.xz&quot;
                    #~(append (list #+(file-append xz &quot;/bin/xz&quot;)
                                    &quot;-e&quot;)
                              (%xz-parallel-args)))
        (compressor &quot;bzip2&quot; &quot;.bz2&quot;
                    #~(list #+(file-append bzip2 &quot;/bin/bzip2&quot;) &quot;-9&quot;))
        (compressor &quot;zstd&quot; &quot;.zst&quot;
                    ;; The default level 3 compresses better than gzip in a
                    ;; fraction of the time, while the highest level 19
                    ;; (de)compresses more slowly and worse than xz.
                    #~(list #+(file-append zstd &quot;/bin/zstd&quot;) &quot;-3&quot;
                            (format #f &quot;--threads=~a&quot; (parallel-job-count))))
        (compressor &quot;none&quot; &quot;&quot; #f)))

(define (lookup-compressor name)
  &quot;Return the compressor object called NAME.  Error out if it could not be
found.&quot;
  (or (find (match-lambda
              (($ &lt;compressor&gt; name*)
               (string=? name* name)))
            %compressors)
      (leave (G_ &quot;~a: compressor not found~%&quot;) name)))
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