;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2016 José Miguel Sánchez García <jmi2k@openmailbox.org>
;;; Copyright © 2016 Carlo Zancanaro <carlo@zancanaro.id.au>
;;;
;;; 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 text-editors)
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module (guix git-download)
  #:use-module (guix utils)
  #:use-module (guix build-system gnu)
  #:use-module ((guix licenses) #:prefix license:)
  #:use-module (gnu packages)
  #:use-module (gnu packages boost)
  #:use-module (gnu packages documentation)
  #:use-module (gnu packages gcc)
  #:use-module (gnu packages lua)
  #:use-module (gnu packages ncurses)
  #:use-module (gnu packages ruby)
  #:use-module (gnu packages terminals)
  #:use-module (gnu packages xml))

(define-public vis
  (package
    (name "vis")
    (version "0.2")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://github.com/martanne/"
                                  name "/archive/v" version ".tar.gz"))
              (file-name (string-append name "-" version ".tar.gz"))
              (sha256
               (base32 "0bbmkblpndc53pvr8xcfywdn8g351yxfj8c46zp5d744c3bq2nry"))))
    (build-system gnu-build-system)
    (arguments
     `(#:make-flags '("CFLAGS=-pie")
       #:tests? #f ; No tests.
       #:phases
       (modify-phases %standard-phases
         (add-after 'install 'wrap-binary
           (lambda* (#:key inputs outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (lpeg (assoc-ref inputs "lua-lpeg"))
                    (lua-version ,(version-major+minor (package-version lua)))
                    (LUA_PATH (string-append lpeg "/share/lua/"
                                             lua-version "/?.lua"))
                    (LUA_CPATH (string-append lpeg "/lib/lua/"
                                              lua-version "/?.so")))
               (wrap-program (string-append out "/bin/vis")
                 `("LUA_PATH" ":" prefix (,LUA_PATH))
                 `("LUA_CPATH" ":" prefix (,LUA_CPATH)))
               #t))))))
    (native-search-paths
     (list (search-path-specification
            (variable "VIS_PATH")
            (files '("share/vis")))))
    (inputs `(("lua", lua)
              ("ncurses", ncurses)
              ("libtermkey", libtermkey)
              ("lua-lpeg", lua-lpeg)))
    (synopsis "Vim-like text editor")
    (description
     "Vis aims to be a modern, legacy free, simple yet efficient vim-like text
editor.  It extends vim's modal editing with built-in support for multiple
cursors/selections and combines it with sam's structural regular expression
based command language.")
    (home-page "https://github.com/martanne/vis")
    (license (list license:isc               ; Main distribution.
                   license:public-domain     ; map.[ch]
                   license:expat))))         ; lexers and libutf.[ch]

(define-public kakoune
  (let ((commit "125c8b7e80995732e0d8c87b82040025748f1b4f")
        (revision "1"))
    (package
      (name "kakoune")
      (version (string-append "0.0.0-" revision "." (string-take commit 7)))
      (source
       (origin
         (file-name (string-append "kakoune-" version "-checkout"))
         (method git-fetch)
         (uri (git-reference
               (url "https://github.com/mawww/kakoune.git")
               (commit commit)))
         (sha256
          (base32
           "19qs99l8r9p1vi5pxxx9an22fvi7xx40qw3jh2cnh2mbacawvdyb"))
         (modules '((guix build utils)))
         (snippet
          ;; Kakoune uses 'gzip' to compress its manpages. Make sure
          ;; timestamps are not preserved for reproducibility.
          '(begin
             (substitute* "src/Makefile"
               (("gzip -f") "gzip -f --no-name"))
             #t))))
      (build-system gnu-build-system)
      (arguments
       `(#:make-flags (list (string-append "PREFIX=" (assoc-ref %outputs "out"))
                            ;; Boost is compiled with the older ABI, so we can't use
                            ;; the new ABI if we want to link againt it.
                            "CPPFLAGS=-D_GLIBCXX_USE_CXX11_ABI=0")
         #:phases
         (modify-phases %standard-phases
           (add-after 'unpack 'patch-source
             (lambda _
               ;; kakoune uses confstr with _CS_PATH to find out where to find
               ;; a posix shell, but this doesn't work in the build
               ;; environment. This substitution just replaces that result
               ;; with the "sh" path.
               (substitute* "src/shell_manager.cc"
                 (("if \\(m_shell.empty\\(\\)\\)" line)
                  (string-append "m_shell = \"" (which "sh")
                                 "\";\n        " line)))
               #t))
           (delete 'configure)
           ;; kakoune requires us to be in the src/ directory to build
           (add-before 'build 'chdir
             (lambda _ (chdir "src") #t))
           (add-before 'check 'fix-test-permissions
             (lambda _
               ;; Out git downloader doesn't give us write permissions, but
               ;; without them the tests fail.
               (zero? (system* "chmod" "-R" "u+w" "../test")))))))
      (native-inputs `(("gcc" ,gcc-5)
                       ("libxslt" ,libxslt)
                       ("asciidoc" ,asciidoc)
                       ("ruby" ,ruby)))
      (inputs `(("gcc:lib" ,gcc-5 "lib")
                ("ncurses" ,ncurses)
                ("boost" ,boost)))
      (synopsis "Vim-inspired code editor")
      (description
       "Kakoune is a code editor heavily inspired by Vim, as such most of its
commands are similar to Vi's ones, and it shares Vi's \"keystrokes as a text
editing language\" model.  Kakoune has a strong focus on interactivity, most
commands provide immediate and incremental results, while still being
competitive (as in keystroke count) with Vim.")
      (home-page "http://kakoune.org/")
      (license license:unlicense))))
