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;;; dh-elpa.el --- package.el style packages for Debian -*- lexical-binding:t -*-
;; Copyright (C) 2015 David Bremner
;; Portions Copyright 2007-2015 The Free Software Foundation
;; Author: David Bremner <bremner@debian.org>
;; Created: 11 July 2015
;; Version: 0.0.1
;; Keywords: tools
;; Package-Requires: ((tabulated-list "1.0"))
;; This file is NOT part of GNU Emacs.
;; dh-elpa 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.
;; dh-elpa 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 dh-elpa. If not, see <http://www.gnu.org/licenses/>.
(require 'package)
;; Originally package-unpack from package.el in Emacs 24.5
(defun dhelpa-unpack (pkg-desc destdir)
"Install the contents of the current buffer as a package."
(let* ((name (package-desc-name pkg-desc))
(dirname (package-desc-full-name pkg-desc))
(pkg-dir (expand-file-name dirname destdir))
(backup-inhibited t))
(make-directory pkg-dir t)
(pcase (package-desc-kind pkg-desc)
(`tar
(let ((default-directory (file-name-as-directory destdir)))
(package-untar-buffer dirname)))
(`single
(let ((el-file (expand-file-name (format "%s.el" name) pkg-dir)))
(package--write-file-no-coding el-file)))
(kind (error "Unknown package kind: %S" kind)))
(package--make-autoloads-and-stuff pkg-desc pkg-dir)
pkg-dir))
;;;###autoload
(defun dhelpa-install-from-buffer (destdir)
"Install a package from the current buffer.
The current buffer is assumed to be a single .el or .tar file that follows the
packaging guidelines; see info node `(elisp)Packaging'."
(interactive "D")
(let ((pkg-desc (if (derived-mode-p 'tar-mode)
(package-tar-file-info)
(package-buffer-info))))
(dhelpa-unpack pkg-desc destdir)
pkg-desc))
;;;###autoload
(defun dhelpa-batch-install-file ()
"Install second command line argument (an emacs lisp file or
tar file) into second command line argument (a directory)"
(let ((dest (car command-line-args-left))
(el-file (cadr command-line-args-left)))
(dhelpa-install-file dest el-file)))
;;;###autoload
(defun dhelpa-install-file (dest el-file)
"Install second argument (an emacs lisp file or tar file) into
first command line argument (a directory)"
(with-temp-buffer
(insert-file-contents-literally el-file)
(when (string-match "\\.tar\\'" el-file) (tar-mode))
(dhelpa-install-from-buffer (expand-file-name dest))))
;;; dh-elpa.el ends here
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