From 57705f47497b97a0ed42362148f4a523ae5fc8ce Mon Sep 17 00:00:00 2001
From: Jesse Gibbons <jgibbons2357+guix@gmail.com>
Date: Wed, 9 Oct 2019 22:29:16 -0600
Subject: gnu: add filters.

* gnu/packages/toys.scm (filters): New variable.

Signed-off-by: Tobias Geerinckx-Rice <me@tobias.gr>.
---
 gnu/packages/toys.scm | 92 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)

(limited to 'gnu')

diff --git a/gnu/packages/toys.scm b/gnu/packages/toys.scm
index 87706d2277..8c1a03b5d2 100644
--- a/gnu/packages/toys.scm
+++ b/gnu/packages/toys.scm
@@ -1,5 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2017, 2018 Tobias Geerinckx-Rice <me@tobias.gr>
+;;; Copyright © 2019 Jesse Gibbons <jgibbons2357+guix@gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -17,7 +18,10 @@
 ;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
 
 (define-module (gnu packages toys)
+  #:use-module (gnu packages bison)
+  #:use-module (gnu packages flex)
   #:use-module (gnu packages ncurses)
+  #:use-module (gnu packages perl)
   #:use-module (guix build-system gnu)
   #:use-module (guix git-download)
   #:use-module ((guix licenses) #:prefix license:)
@@ -64,3 +68,91 @@ on the text terminal.  It serves no useful purpose but to discourage mistakenly
 typing @command{sl} instead of @command{ls}.")
     (license (license:non-copyleft "file://LICENSE"
                                    "See LICENSE in the distribution."))))
+
+(define-public filters
+  (let ((version "2.55")
+        (commit "c5c291916b52ed9e6418448a8eee30475fb9adcf"))
+    (package
+      (name "filters")
+      (version "2.55")
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://git.joeyh.name/filters")
+               (commit commit)))
+         (file-name (git-file-name name version))
+         (sha256
+          (base32 "1gaigpda1w9wxfh8an3sam1hpacc1bhxl696w4yj0vzhc6izqvxs"))
+         (modules '((guix build utils)))
+         (snippet '(begin
+                     ;; kenny is under nonfree Artistic License (Perl) 1.0.
+                     (delete-file "kenny")
+                     (substitute* "Makefile"
+                       (("kenny")
+                        ""))))))
+      (build-system gnu-build-system)
+      (arguments
+       `(#:make-flags
+         (list "CC=gcc" (string-append "DESTDIR=" %output))
+         #:phases
+         (modify-phases %standard-phases
+           (delete 'configure)
+           (add-after 'unpack 'fix-install-directories
+             (lambda _
+               (substitute* "Makefile"
+                 (("/usr/games")
+                  "/bin/")
+                 (("/usr/share/")
+                  "/share/"))
+               #t)))
+         #:tests? #f))                  ; no test suite
+      (native-inputs
+       `(("bison" ,bison)
+         ("flex" ,flex)))
+      (inputs
+       `(("perl" ,perl)))
+      (home-page "https://joeyh.name/code/filters/")
+      (synopsis "Various amusing text filters")
+      (description
+       "The filters collection harks back to the late 1980s, when various text
+filters were written to munge written language in amusing ways.  The earliest
+and best known were legends such as the Swedish Chef filter and B1FF.
+
+This package contains the following filter commands:
+@enumerate
+@item b1ff: a satire of a stereotypical Usenet newbie
+@item censor: comply with the @acronym{CDA, Communications Decency Act}
+@item chef: convert English to Mock Swedish
+@item cockney: Cockney English
+@item elee: k3wl hacker slang
+@item fanboy: a stereotypical fan (supports custom fandoms)
+@item fudd: Elmer Fudd
+@item jethro: hillbilly text filter
+@item jibberish: a random selection of these filters
+@item jive: Jive English
+@item ken: turn English into Cockney
+@item kraut: a bad German accent
+@item ky00te: a very cute accent
+@item LOLCAT: as seen in Internet GIFs everywhere
+@item nethackify: wiped-out text as found in nethack
+@item newspeak: à la 1984
+@item nyc: Brooklyn English
+@item pirate: talk like a pirate
+@item rasterman: straight from the keyboard of Carsten Haitzler
+@item scottish: fake Scottish (Dwarven) accent
+@item scramble: scramble the \"inner\" letters of each word
+@item spammer: turn honest text into something liable to be flagged as spam
+@item studly: studly caps.
+@item uniencode: use glorious Unicode to the fullest possible extent
+@item upside-down: flip the text upside down
+@end enumerate
+
+The GNU project hosts a similar collection of filters, the GNU talkfilters.")
+      (license                    ; see debian/copyright
+       (list license:gpl2+        ; most of the filters
+             license:gpl2         ; rasterman, ky00te.dir/* nethackify, pirate
+             license:gpl3+        ; scramble, scottish
+             license:public-domain      ; jethro, kraut, ken, studly
+             license:gpl1+         ; cockney, jive, nyc only say "gpl"
+             license:expat)))))    ; newspeak
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