opensource-utils.el

;;; opensource-utils.el --- some tools

;; Copyright (C) 2016 Nicolas Lamirault <nicolas.lamirault@gmail.com>

;; Licensed under the Apache License, Version 2.0 (the "License");
;; you may not use this file except in compliance with the License.
;; You may obtain a copy of the License at

;;     http://www.apache.org/licenses/LICENSE-2.0

;; Unless required by applicable law or agreed to in writing, software
;; distributed under the License is distributed on an "AS IS" BASIS,
;; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
;; See the License for the specific language governing permissions and
;; limitations under the License.
;;; Commentary:

;;; Code:

(require 'dash)
(require 's)


;; Errors

(eval-and-compile
  (unless (fboundp 'define-error)
    ;; Shamelessly copied from Emacs trunk :)
    (defun define-error (name message &optional parent)
      "Define NAME as a new error signal.
MESSAGE is a string that will be output to the echo area if such an error
is signaled without being caught by a `condition-case'.
PARENT is either a signal or a list of signals from which it inherits.
Defaults to `error'."
      (unless parent (setq parent 'error))
      (let ((conditions
             (if (consp parent)
                 (apply #'nconc
                        (mapcar (lambda (parent)
                                  (cons parent
                                        (or (get parent 'error-conditions)
                                            (error "Unknown signal `%s'" parent))))
                                parent))
               (cons parent (get parent 'error-conditions)))))
        (put name 'error-conditions
             (delete-dups (copy-sequence (cons name conditions))))
        (when message (put name 'error-message message))))))

(define-error 'opensource-error "Opensource error")

(define-error 'opensource-http-error "HTTP Error" 'opensource-error)


(provide 'opensource-utils)
;;; opensource-utils.el ends here