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;;; pcmpl-lein.el --- pcomplete for Leiningen tasks; works with eshell
;; Copyright (C) 2011 Phil Hagelberg
;;
;; Author: Phil Hagelberg
;; URL: http://github.com/technomancy/leiningen
;; Version: 0.1
;; Keywords: eshell completion
;; Created: 2011-01-15
;; This file is not part of GNU Emacs.
;;; Commentary:
;; Provides completion of leiningen tasks using pcomplete, suitable
;; for eshell. Does not support custom :source-path or :test-path.
;;; License:
;; This program 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.
;;
;; This program 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 Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;;; Code:
(require 'cl)
(require 'pcomplete)
(require 'esh-util)
(defvar pcmpl-lein-tasks-alist nil
"Cached alist of project roots to task lists.")
(defvar pcmpl-lein-project-root nil)
(defun pcmpl-lein-tasks ()
(or (cdr (assoc pcmpl-lein-project-root pcmpl-lein-tasks-alist))
(let* ((help (progn (message "Getting Leiningen task list...")
(shell-command-to-string "lein help")))
(tasks (split-string help "\n"))
(tasks (subseq tasks 4 -3))
(tasks (mapcar (lambda (line)
(substring line 0 (string-match " " line)))
tasks)))
;; OHAI MEMOIZE.
(add-to-list 'pcmpl-lein-tasks-alist
(cons pcmpl-lein-project-root tasks))
tasks)))
(defun pcmpl-lein-namespaces-dir ()
(let ((task (cadr pcomplete-args)))
(cond ((equal "test" task) "test")
((or (equal "run" task) (equal "compile" task)) "src"))))
(defun pcmpl-lein-transform-filename (file)
(subst-char-in-string ?/ ?.
(substring file (+ (length pcmpl-lein-project-root)
(length namespaces-dir) 1) -4)))
(defun pcmpl-lein-namespaces-in-dir (file)
(if (not (file-directory-p file))
(if (string-match "\\.clj$" file)
(pcmpl-lein-transform-filename file))
(eshell-flatten-list (mapcar 'pcmpl-lein-namespaces-in-dir
(directory-files file t "^[^\\.]")))))
(defun pcmpl-lein-namespaces ()
(let ((namespaces-dir (pcmpl-lein-namespaces-dir)))
(when namespaces-dir
(pcmpl-lein-namespaces-in-dir namespaces-dir))))
;;;###autoload
(defun pcomplete/lein ()
(let ((pcmpl-lein-project-root (expand-file-name
(locate-dominating-file
default-directory "project.clj"))))
(pcomplete-here (pcmpl-lein-tasks))
(if (not (string= "run" (cadr pcomplete-args)))
(pcomplete-here (pcmpl-lein-namespaces))
(pcomplete-here (list "-m"))
(pcomplete-here (pcmpl-lein-namespaces)))))
(provide 'pcmpl-lein)
;;; pcmpl-lein.el ends here
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