2016-10-19 21:03:08 +02:00
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;;; oni-helpers.el --- Helper functions for Emacs init -*- lexical-binding: t; -*-
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;; Copyright (C) 2016 Tom Willemse
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;; Author: Tom Willemse <tom@ryuslash.org>
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;; Keywords: convenience
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;; This program is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Helpers for my Emacs init.
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;;; Code:
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2017-03-06 07:14:34 +01:00
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(defmacro silently (title &rest body)
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"Only output something when an error occurs.
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Prefix with TITLE any output that occurs while executing BODY,
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but only when an error occurs, otherwise discard it."
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(declare (indent 1))
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(let ((buffer-var (cl-gensym))
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(error-var (cl-gensym)))
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`(with-temp-buffer
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(let ((,buffer-var (current-buffer)))
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(cl-letf (((symbol-function 'message)
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(lambda (msg &rest args)
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(with-current-buffer ,buffer-var
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(insert " " (apply 'format msg args) "\n")))))
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(condition-case ,error-var
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(progn ,@body)
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(error
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(princ ,(concat title " output:\n"))
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(princ (with-current-buffer ,buffer-var (buffer-string)))
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(princ "Error:\n")
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(princ " ")
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(princ (cadr ,error-var))
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(princ "\n"))))))))
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2016-10-19 21:03:08 +02:00
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(defun oni:data-location (file-name)
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"Return the location of FILE-NAME within my data directory.
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2017-03-06 07:14:34 +01:00
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This is currently the data directory under the
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`user-emacs-directory'."
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2016-10-19 21:03:08 +02:00
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(concat user-emacs-directory "data/" file-name))
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(with-eval-after-load 'ert
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(ert-deftest oni:data-location ()
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"Test that `oni:data-location' returns the correct locations."
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(should (string= "~/.emacs.d/data/backup-files/"
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(oni:data-location "backup-files/")))
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(should (string= "~/.emacs.d/data/auto-save-files/"
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(oni:data-location "auto-save-files/")))
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(should (string= "~/.emacs.d/data/auto-save-list/.saves-"
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(oni:data-location "auto-save-list/.saves-")))))
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(provide 'oni-helpers)
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;;; oni-helpers.el ends here
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