;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014, 2021-2022 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2014 Eric Bavier <bavier@member.fsf.org>
;;; Copyright © 2016 Mathieu Lirzin <mthl@gnu.org>
;;; Copyright © 2018 Tobias Geerinckx-Rice <me@tobias.gr>
;;; Copyright © 2020 Marius Bakke <marius@gnu.org>
;;; Copyright © 2021 Maxim Cournoyer <maxim.cournoyer@gmail.com>
;;; Copyright © 2021 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2021 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2021 Andrew Whatson <whatson@gmail.com>
;;;
;;; 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 docbook)
  #:use-module (gnu packages)
  #:use-module (gnu packages bash)
  #:use-module (gnu packages compression)
  #:use-module (gnu packages imagemagick)
  #:use-module (gnu packages inkscape)
  #:use-module (gnu packages tex)
  #:use-module (gnu packages texinfo)
  #:use-module (gnu packages perl)
  #:use-module (gnu packages python)
  #:use-module (gnu packages base)
  #:use-module (gnu packages web-browsers)
  #:use-module (gnu packages xml)
  #:use-module ((guix licenses) #:prefix license:)
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module ((guix build utils) #:select (alist-replace))
  #:use-module (guix build-system copy)
  #:use-module (guix build-system gnu)
  #:use-module (guix build-system trivial)
  #:use-module (guix build-system python))

(define-public docbook-xml-5
  (package
    (name "docbook-xml")
    (version "5.0.1")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://docbook.org/xml/" version
                                  "/docbook-" version ".zip"))
              (sha256
               (base32
                "1iz3hq1lqgnshvlz4j9gvh4jy1ml74qf90vqf2ikbq0h4i2xzybs"))))
    (build-system trivial-build-system)
    (arguments
     `(#:modules ((guix build utils))
       #:builder
       (begin
         (use-modules (guix build utils))
         (let* ((unzip
                 (string-append (assoc-ref %build-inputs "unzip")
                                "/bin/unzip"))
                (source (assoc-ref %build-inputs "source"))
                (out    (assoc-ref %outputs "out"))
                (dtd    (string-append out "/xml/dtd/docbook")))
           (invoke unzip source)
           (mkdir-p dtd)
           (copy-recursively (string-append "docbook-" ,version) dtd)
           (with-directory-excursion dtd
             (substitute* (string-append out "/xml/dtd/docbook/catalog.xml")
               (("uri=\"")
                (string-append
                 "uri=\"file://" dtd "/")))
             #t)))))
    (native-inputs (list unzip))
    (home-page "https://docbook.org")
    (synopsis "DocBook XML DTDs for document authoring")
    (description
     "DocBook is general purpose XML and SGML document type particularly well
suited to books and papers about computer hardware and software (though it is
by no means limited to these applications.)  This package provides XML DTDs.")
    (license (license:x11-style "" "See file headers."))))

(define-public docbook-xml
  (package
    (inherit docbook-xml-5)
    (name "docbook-xml")
    (version "4.5")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://docbook.org/xml/" version
                                  "/docbook-xml-" version ".zip"))
              (sha256
               (base32
                "1d671lcjckjri28xfbf6dq7y3xnkppa910w1jin8rjc35dx06kjf"))))
    (arguments
     '(#:builder (begin
                   (use-modules (guix build utils))

                   (let* ((unzip
                           (string-append (assoc-ref %build-inputs "unzip")
                                          "/bin/unzip"))
                          (source (assoc-ref %build-inputs "source"))
                          (out    (assoc-ref %outputs "out"))
                          (dtd    (string-append out "/xml/dtd/docbook")))
                     (mkdir-p dtd)
                     (with-directory-excursion dtd
                       (invoke unzip source))
                     (substitute* (string-append out "/xml/dtd/docbook/catalog.xml")
                       (("uri=\"")
                        (string-append
                         "uri=\"file://" dtd "/")))
                     #t))
                 #:modules ((guix build utils))))))

(define-public docbook-xml-4.4
  (package (inherit docbook-xml)
    (version "4.4")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://docbook.org/xml/" version
                                  "/docbook-xml-" version ".zip"))
              (sha256
               (base32
                "141h4zsyc71sfi2zzd89v4bb4qqq9ca1ri9ix2als9f4i3mmkw82"))))))

(define-public docbook-xml-4.3
  (package (inherit docbook-xml)
    (version "4.3")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://docbook.org/xml/" version
                                  "/docbook-xml-" version ".zip"))
              (sha256
               (base32
                "0r1l2if1z4wm2v664sqdizm4gak6db1kx9y50jq89m3gxaa8l1i3"))))))

(define-public docbook-xml-4.2
  (package (inherit docbook-xml)
    (version "4.2")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://docbook.org/xml/" version
                                  "/docbook-xml-" version ".zip"))
              (sha256
               (base32
                "18hgwvmywh6a5jh38szjmg3hg2r4v5lb6r3ydc3rd8cp9wg61i5c"))))))

(define-public docbook-xml-4.1.2
  (package (inherit docbook-xml)
    (version "4.1.2")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://docbook.org/xml/" version
                                  "/docbkx412.zip"))
              (sha256
               (base32
                "0wkp5rvnqj0ghxia0558mnn4c7s3n501j99q2isp3sp0ci069w1h"))))
    (arguments
     '(#:modules ((guix build utils))
       #:builder
       (begin
         (use-modules (guix build utils))
         (let ((source (assoc-ref %build-inputs "source"))
               (unzip  (string-append (assoc-ref %build-inputs "unzip")
                                      "/bin/unzip"))
               (dtd    (string-append (assoc-ref %outputs "out")
                                      "/xml/dtd/docbook")))
           (mkdir-p dtd)
           (invoke unzip source "-d" dtd)))))))

(define-public docbook-xsl
  (package
    (name "docbook-xsl")
    (version "1.79.2")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://github.com/docbook/xslt10-stylesheets"
                                  "/releases/download/release%2F" version
                                  "/docbook-xsl-" version ".tar.bz2"))
              (patches (search-patches "docbook-xsl-support-old-url.patch"
                                       "docbook-xsl-nonrecursive-string-subst.patch"))
              (sha256
               (base32
                "0wd33z41kdsybyx3ay21w6bdlmgpd9kyn3mr5y520lsf8km28r9i"))
              (modules '((guix build utils)))
              (snippet
               '(begin
                  (for-each delete-file (find-files "." "\\.jar$"))
                  #t))))
    (build-system trivial-build-system)
    (arguments
     `(#:builder (begin
                   (use-modules (guix build utils))

                   (define name-version
                     (string-append ,name "-" ,version))

                   (let* ((bzip2  (assoc-ref %build-inputs "bzip2"))
                          (xz     (assoc-ref %build-inputs "xz"))
                          (tar    (assoc-ref %build-inputs "tar"))
                          (source (assoc-ref %build-inputs "source"))
                          (out    (assoc-ref %outputs "out"))
                          (xsl    (string-append out "/xml/xsl")))
                     (setenv "PATH" (string-append bzip2 "/bin" ":" xz "/bin"))
                     (invoke (string-append tar "/bin/tar") "xvf" source)

                     (mkdir-p xsl)
                     (copy-recursively name-version
                                       (string-append xsl "/" name-version))

                     (substitute* (string-append xsl "/" name-version "/catalog.xml")
                       (("rewritePrefix=\"./")
                        (string-append "rewritePrefix=\"file://" xsl "/"
                                       name-version "/")))
                     #t))
       #:modules ((guix build utils))))
    (native-inputs (list bzip2 xz ;needed for repacked tarballs
                         tar))
    (home-page "https://docbook.org")
    (synopsis "DocBook XSL style sheets for document authoring")
    (description
     "This package provides XSL style sheets for DocBook.")
    (license (license:x11-style "" "See 'COPYING' file."))))

(define-public docbook-xsl-ns
  (package
    (name "docbook-xsl-ns")
    (version "1.79.1")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://sourceforge/docbook/"
                                  name "/" version "/"
                                  name "-" version ".tar.bz2"))
              (sha256
               (base32
                "170ggf5dgjar65kkn5n33kvjr3pdinpj66nnxfx8b2avw0k91jin"))))
    (build-system copy-build-system)
    (outputs '("out" "doc"))
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         ;; XXX: The copy-build-system doesn't seem to allow installing to a
         ;; different output.
         (replace 'install
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (xml (string-append out "/xml/xsl/" ,name "-" ,version))
                    (doc (string-append (assoc-ref %outputs "doc")
                                        "/share/doc/" ,name "-" ,version))
                    (select-rx (make-regexp
                                "(\\.xml$|\\.xsl$|\\.dtd$|\\.ent$)")))
               ;; Install catalog.
               (install-file "catalog.xml" xml)
               (install-file "VERSION.xsl" xml)
               (substitute* (string-append xml "/catalog.xml")
                 (("rewritePrefix=\"./")
                  (string-append "rewritePrefix=\"file://" xml "/")))
               ;; Install style sheets.
               (for-each (lambda (dir)
                           (for-each (lambda (f)
                                       (install-file
                                        f (string-append xml "/" (dirname f))))
                                     (find-files dir select-rx)))
                         '("assembly" "common" "eclipse" "epub" "epub3" "fo"
                           "highlighting" "html" "htmlhelp" "javahelp" "lib"
                           "manpages" "params" "profiling" "roundtrip"
                           "template" "website"
                           "xhtml" "xhtml-1_1" "xhtml5"))
               ;; Install documentation.
               (install-file "NEWS" doc)
               (install-file "RELEASE-NOTES.html" doc)
               (copy-recursively "slides" doc)
               (copy-recursively "webhelp" doc)))))))
    (home-page "https://docbook.org")
    (synopsis "DocBook XSL namespaced style sheets for document authoring")
    (description "This package provides the @emph{namespaced} XSL style sheets
for DocBook.")
    (license (license:x11-style "" "See 'COPYING' file."))))

(define-public docbook-dsssl
  (package
    (name "docbook-dsssl")
    (version "1.79")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://sourceforge/docbook/"
                                  name "/" version "/"
                                  name "-" version ".tar.bz2"))
              (sha256
               (base32
                "1g72y2yyc2k89kzs0lvrb9n7hjayw1hdskfpplpz97pf1c99wcig"))))
    (build-system trivial-build-system)
    (outputs '("out" "doc"))
    (arguments
     `(#:modules ((guix build utils))
       #:builder
       (begin
         (use-modules (guix build utils))
         (let ((source (assoc-ref %build-inputs "source"))
               (dtd (string-append (assoc-ref %outputs "out")
                                   "/sgml/dtd/docbook"))
               (docbook-dsssl-doc (assoc-ref %build-inputs "docbook-dsssl-doc"))
               (doc (assoc-ref %outputs "doc"))
               (tar (assoc-ref %build-inputs "tar"))
               (bzip2 (assoc-ref %build-inputs "bzip2")))
           (setenv "PATH" (string-append tar "/bin" ":" bzip2 "/bin"))
           (mkdir-p dtd)
           (invoke "tar" "-xf" source "-C" dtd)
           ;; The doc output contains 1.4 MiB of HTML documentation.
           (symlink docbook-dsssl-doc doc)))))
    (inputs
     (list docbook-dsssl-doc))
    (native-inputs
     (list bzip2 tar))
    (home-page "https://docbook.org/")
    (synopsis "DSSSL style sheets for DocBook")
    (description "This package provides DSSSL style sheets for DocBook.")
    (license (license:non-copyleft "file://README"))))

;;; Private variable, used as the 'doc' output of the docbook-dsssl package.
(define docbook-dsssl-doc
  (package
    (name "docbook-dsssl-doc")
    (version "1.79")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://sourceforge/docbook/"
                                  name "/" version "/"
                                  name "-" version ".tar.bz2"))
              (sha256
               (base32
                "1plp5ngc96pbna4rwglp9glcadnirbm3hlcjb4gjvq1f8biic9lz"))))
    (build-system trivial-build-system)
    (arguments
     `(#:modules ((guix build utils))
       #:builder
       (begin
         (use-modules (guix build utils))
         (let ((source (assoc-ref %build-inputs "source"))
               (docdir (string-append (assoc-ref %outputs "out")
                                      "/share/doc/" "docbook-dsssl-" ,version))
               (tar (assoc-ref %build-inputs "tar"))
               (bzip2 (assoc-ref %build-inputs "bzip2")))
           (setenv "PATH" (string-append tar "/bin" ":" bzip2 "/bin"))
           (mkdir-p docdir)
           ;; Extract the "doc" subdirectory.
           (invoke "tar" "-xf" source "--strip-components=2"
                   "--no-same-owner" "-C" docdir
                   (string-append "docbook-dsssl-" ,version "/doc"))))))
    (native-inputs
     `(("bzip2" ,bzip2)
       ("tar" ,tar)))
    (home-page "https://docbook.org/")
    (synopsis "DocBook DSSSL style sheets documentation")
    (description "Documentation for the DocBook DSSSL style sheets.")
    (license (license:non-copyleft "file://doc/LEGALNOTICE.htm"))))

(define-public docbook-sgml-4.2
  (package
    (name "docbook-sgml")
    (version "4.2")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "https://www.oasis-open.org/docbook/sgml/4.2/docbook-"
                    version ".zip"))
              (sha256
               (base32
                "1hrm4qmmzi285bkxkc74lxvjvw2gbl7ycbaxhv31h9rl9g4x5sv7"))))
    (build-system trivial-build-system)
    (arguments
     '(#:modules ((guix build utils))
       #:builder
       (begin
         (use-modules (guix build utils))
         (let ((source (assoc-ref %build-inputs "source"))
               (iso-entities-dir (string-append
                                  (assoc-ref %build-inputs "iso-8879-entities")))
               (unzip  (string-append (assoc-ref %build-inputs "unzip")
                                      "/bin/unzip"))
               (dtd    (string-append (assoc-ref %outputs "out")
                                      "/sgml/dtd/docbook")))
           ;; Extract the sources.
           (mkdir-p dtd)
           (chdir dtd)
           (invoke unzip source)
           ;; Reference the ISO 8879 character entities.
           ;; e.g. "iso-lat1.gml" --> "<iso-entities-dir>/ISOlat1"
           (substitute* "docbook.cat"
             (("\"iso-(.*)\\.gml\"" _ name)
              (string-append "\"" iso-entities-dir "/ISO" name "\"")))))))
    (native-inputs
     (list unzip))
    (inputs
     (list iso-8879-entities))
    (home-page "https://docbook.org")
    (synopsis "DocBook SGML style sheets for document authoring")
    (description "This package provides SGML style sheets for DocBook.")
    (license (license:x11-style "" "See file headers."))))

(define-public docbook-sgml-4.1
  (package
    (inherit docbook-sgml-4.2)
    (version "4.1")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://www.oasis-open.org/docbook/sgml/"
                                  version "/docbk41.zip"))
              (sha256
               (base32
                "04b3gp4zkh9c5g9kvnywdkdfkcqx3kjc04j4mpkr4xk7lgqgrany"))))))

(define-public docbook-sgml docbook-sgml-4.1)

(define-public docbook-sgml-3.1
  (package
    (inherit docbook-sgml)
    (version "3.1")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://www.oasis-open.org/docbook/sgml/"
                                  version "/docbk31.zip"))
              (sha256
               (base32
                "0f25ch7bywwhdxb1qa0hl28mgq1blqdap3rxzamm585rf4kis9i0"))))))

;;; Private package referenced by docbook-sgml.
(define iso-8879-entities
  (package
    (name "iso-8879-entities")
    (version "0.0")                     ;no proper version
    (source (origin
              (method url-fetch)
              (uri "http://www.oasis-open.org/cover/ISOEnts.zip")
              (sha256
               (base32
                "1clrkaqnvc1ja4lj8blr0rdlphngkcda3snm7b9jzvcn76d3br6w"))))
    (build-system trivial-build-system)
    (arguments
     '(#:modules ((guix build utils))
       #:builder
       (begin
         (use-modules (guix build utils))
         (let ((source (assoc-ref %build-inputs "source"))
               (unzip  (string-append (assoc-ref %build-inputs "unzip")
                                      "/bin/unzip"))
               (out (string-append (assoc-ref %outputs "out"))))
           (invoke unzip source "-d" out)))))
    (native-inputs `(("unzip" ,unzip)))
    (home-page "https://www.oasis-open.org/")
    (synopsis "ISO 8879 character entities")
    (description "ISO 8879 character entities that are typically used in
the in DocBook SGML DTDs.")
    (license (license:x11-style "" "See file headers."))))

(define-public dblatex
  (package
    (name "dblatex")
    (version "0.3.12")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://sourceforge/dblatex/dblatex/"
                                  "dblatex-" version "/dblatex3-"
                                  version ".tar.bz2"))
              (sha256
               (base32
                "0yd09nypswy3q4scri1dg7dr99d7gd6r2dwx0xm81l9f4y32gs0n"))))
    (build-system python-build-system)
    ;; TODO: Add xfig/transfig for fig2dev utility
    (inputs
     `(("texlive" ,(texlive-updmap.cfg (list texlive-amsfonts
                                             texlive-latex-anysize
                                             texlive-latex-appendix
                                             texlive-latex-bookmark
                                             texlive-latex-changebar
                                             texlive-latex-colortbl
                                             texlive-latex-fancybox
                                             texlive-latex-fancyhdr
                                             texlive-latex-fancyvrb
                                             texlive-latex-float
                                             texlive-latex-footmisc
                                             texlive-hyperref
                                             texlive-latex-jknapltx

                                             ;; TODO: Use non-deprecated name on
                                             ;; next rebuild cycle.
                                             texlive-latex-listings

                                             texlive-latex-multirow
                                             texlive-latex-overpic
                                             texlive-latex-pdfpages
                                             texlive-latex-refcount
                                             texlive-latex-subfigure
                                             texlive-latex-titlesec
                                             texlive-wasysym

                                             texlive-fonts-rsfs
                                             texlive-stmaryrd

                                             texlive-generic-iftex)))
       ("imagemagick" ,imagemagick)     ;for convert
       ("inkscape" ,inkscape/stable)    ;for svg conversion
       ("docbook" ,docbook-xml)
       ("libxslt" ,libxslt)))           ;for xsltproc
    (arguments
     `(;; Using setuptools causes an invalid "package_base" path in
       ;; out/bin/.dblatex-real due to a missing leading '/'.  This is caused
       ;; by dblatex's setup.py stripping the root path when creating the
       ;; script.  (dblatex's setup.py still uses distutils and thus has to
       ;; create the script by itself. The feature for creating scripts is one
       ;; of setuptools' features.)
       ;; See this thread for details:
       ;; https://lists.gnu.org/archive/html/guix-devel/2016-12/msg00030.html
       #:use-setuptools? #f
       #:tests? #f                      ;no 'test' command
       #:phases
       (modify-phases %standard-phases
         (add-after 'wrap 'set-path
           (lambda* (#:key inputs outputs #:allow-other-keys)
             (let ((out (assoc-ref outputs "out")))
               ;; dblatex executes helper programs at runtime.
               (wrap-program (string-append out "/bin/dblatex")
                 `("PATH" ":" prefix
                   ,(map (lambda (input)
                           (string-append (assoc-ref inputs input)
                                          "/bin"))
                         '("libxslt" "texlive"
                           "imagemagick" "inkscape"))))))))))
    (home-page "http://dblatex.sourceforge.net")
    (synopsis "DocBook to LaTeX Publishing")
    (description
     "DocBook to LaTeX Publishing transforms your SGML/XML DocBook documents
to DVI, PostScript or PDF by translating them in pure LaTeX as a first
process.  MathML 2.0 markups are supported too.  It started as a clone of
DB2LaTeX.")
    ;; lib/contrib/which is under an X11 license
    (license license:gpl2+)))

;; This is a variant of the 'dblatex' package that is not updated often.  It
;; is intended to be used as a native-input at build-time only, e.g. by
;; 'gtk-doc' for generating package documentation.  This allows the main
;; 'dblatex' and 'imagemagick' packages to be freely updated on the 'master'
;; branch without triggering an excessive number of rebuilds.
(define-public dblatex/stable
  (hidden-package
   (package/inherit dblatex
     (inputs (alist-replace "imagemagick" `(,imagemagick/stable)
                            (package-inputs dblatex))))))

(define-public docbook-utils
  (package
    (name "docbook-utils")
    (version "0.6.14")
    (source (origin
              (method url-fetch)
              ;; The original sources are not accessible anymore.
              (uri (string-append "http://deb.debian.org/debian/pool/main/"
                                  "d/docbook-utils/docbook-utils_"
                                  version ".orig.tar.gz"))
              (sha256
               (base32
                "1scj5vgw1xz872pq54a89blcxqqm11p90yzv8a9mqq57x27apyj8"))))
    (build-system gnu-build-system)
    (arguments
     `(#:phases (modify-phases %standard-phases
                  (add-after 'unpack 'patch-build-system
                    (lambda _
                      (substitute* (find-files "." "\\.in$")
                        ;; Do not hard-code SGML_CATALOG_FILES.
                        ((".*SGML_CATALOG_FILES=/etc/sgml/catalog.*") "")
                        ;; Use OpenSP and OpenJade.
                        (("\\bjade\\b")
                         "openjade")
                        (("\\bnsgmls\\b")
                         "onsgmls"))
                      #t))
                  (add-after 'unpack 'patch-jw.in
                    ;; Do not override the SGML_CATALOG_FILES environment
                    ;; variable.
                    (lambda _
                      (substitute* "bin/jw.in"
                        ((".*SGML_CATALOG_FILES=`find.*")
                         "")
                        (("SGML_CATALOG_FILES=`echo.*")
                         ":\n")
                        (("SGML_CATALOG_FILES=\"\"")
                         ":")
                        (("\\bwhich\\b")
                         "command -v"))
                      #t))
                  (add-after 'unpack 'patch-txt-backend
                    (lambda _
                      ;; Locate lynx, links or w3m from the PATH, not from
                      ;; /usr/bin.
                      (substitute* "backends/txt"
                        (("CONVERT=/usr/bin/")
                         "CONVERT=")
                        (("\\[ -x /usr/bin/([^ ]+) \\]" dummy command)
                         (string-append "command -v " command " > /dev/null")))
                      #t)))))
    ;; Propagated for convenience.  All these tools are used at run time to
    ;; provide the complete functionality of the docbook-utils commands.
    (propagated-inputs
     (list texlive-jadetex
           docbook-sgml-3.1
           docbook-dsssl
           openjade
           opensp
           lynx
           perl-sgmls))
    (home-page "https://packages.debian.org/sid/docbook-utils")
    (synopsis "DocBook converter to other formats")
    (description "The docbook-utils package is a collection of utilities
intended to ease the use of SGML and XML.
@table @command
@item jw
Convert a SGML DocBook file to other formats such as Hyper Text Markup
Language (HTML), Rich Text Format (RTF), PostScript (PS), man, Portable
Document Format (PDF), TeX, Texinfo or plain text (txt).  It can be used
more conveniently via the following wrappers:
@itemx docbook2dvi Convert a SGML DocBook file to the DVI format.
@itemx docbook2html Convert a SGML DocBook file to an HTML document.
@itemx docbook2man Convert a SGML DocBook file a man page.
@itemx docbook2pdf Convert a SGML DocBook file to a PDF document.
@itemx docbook2ps Convert a SGML DocBook file to a PS document.
@itemx docbook2rtf Convert a SGML DocBook file to a RTF document.
@itemx docbook2tex Convert a SGML DocBook file to a TeX document.
@itemx docbook2texi Convert a SGML DocBook file to a Texinfo document.
@itemx docbook2txt Convert a SGML DocBook file to a plain text document.
@item sgmldiff
Detect the differences in markup between two SGML files.
@end table")
    (license license:gpl2+)))

(define-public docbook2x
  (package
    (name "docbook2x")
    (version "0.8.8")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://sourceforge/docbook2x/docbook2x/"
                                  version "/docbook2X-" version ".tar.gz"))
              (sha256
               (base32
                "0ifwzk99rzjws0ixzimbvs83x6cxqk1xzmg84wa1p7bs6rypaxs0"))))
    (build-system gnu-build-system)
    (inputs
     `(("bash-minimal" ,bash-minimal)
       ("docbook-xml" ,docbook-xml)
       ("perl" ,perl)
       ("perl-xml-namespacesupport" ,perl-xml-namespacesupport)
       ("perl-xml-parser" ,perl-xml-parser)
       ("perl-xml-sax" ,perl-xml-sax)
       ("perl-xml-sax-base" ,perl-xml-sax-base)
       ("texinfo" ,texinfo)
       ("xsltproc" ,libxslt)))
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (add-after 'configure 'patch-sources
           (lambda* (#:key inputs outputs #:allow-other-keys)
             ;; Fix failed substitution in config.pl
             (substitute* "perl/config.pl"
               (("\\$\\{prefix\\}")
                (assoc-ref outputs "out")))
             ;; Fix a failing test (maybe it worked with old texinfo?)
             (substitute* "test/complete-manuals/at1.xml"
               (("<bridgehead>")
                "<bridgehead renderas=\"sect2\">"))
             ;; Patch all the tests use DocBook 4.5
             (substitute* (find-files "test" "\\.xml$")
               (("\"-//OASIS//DTD DocBook XML V4\\..+//EN\"")
                "\"-//OASIS//DTD DocBook XML V4.5//EN\"")
               (("\"http://www\\.oasis-open\\.org/docbook/xml/4\\..+/docbookx.dtd\"")
                "\"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd\""))
             ;; Set XML catalogs for tests to pass
             (setenv "XML_CATALOG_FILES"
                     (string-append (assoc-ref inputs "docbook-xml")
                                    "/xml/dtd/docbook/catalog.xml"))))
         (add-after 'install 'wrap-programs
           (lambda* (#:key inputs outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (programs
                     (map (lambda (p)
                            (string-append out "/bin/" p))
                          '("db2x_manxml" "db2x_texixml" "db2x_xsltproc"
                            "docbook2man" "docbook2texi")))
                    (perl5lib
                     (map (lambda (i)
                            (string-append (assoc-ref inputs i)
                                           "/lib/perl5/site_perl"))
                          '("perl-xml-namespacesupport"
                            "perl-xml-parser"
                            "perl-xml-sax"
                            "perl-xml-sax-base")))
                    (xml-catalog-files
                     (list (string-append (assoc-ref inputs "docbook-xml")
                                          "/xml/dtd/docbook/catalog.xml"))))
               (map (lambda (program)
                      (wrap-program program
                        `("PERL5LIB" ":" prefix
                          ,perl5lib)
                        `("XML_CATALOG_FILES" " " prefix
                          ,xml-catalog-files)))
                    programs))))
         (add-after 'install 'create-symlinks
           (lambda* (#:key outputs #:allow-other-keys)
             (let ((out (assoc-ref outputs "out")))
               ;; Create db2x_* symlinks to satisfy some configure scripts
               ;; which use these names to differentiate from an older
               ;; docbook2man script provided by docbook-utils.
               (map (lambda (prog)
                      (symlink prog (string-append out "/bin/db2x_" prog)))
                    '("docbook2man" "docbook2texi"))))))))
    (home-page "http://docbook2x.sourceforge.net")
    (synopsis "Convert DocBook to man page and Texinfo format")
    (description
     "docbook2X is a software package that converts DocBook documents into the
traditional Unix man page format and the GNU Texinfo format.  Notable features
include table support for man pages, internationalization support, and easy
customization of the output using XSLT.")
    (license license:expat)))
