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;;; cider-grimoire.el --- Grimoire integration -*- lexical-binding: t -*-
;; Copyright © 2014-2015 Bozhidar Batsov
;;
;; Author: Bozhidar Batsov <bozhidar@batsov.com>
;; 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 this program. If not, see <http://www.gnu.org/licenses/>.
;; This file is not part of GNU Emacs.
;;; Commentary:
;; A few commands for Grimoire documentation lookup.
;;; Code:
(require 'cider-client)
(require 'cider-common)
(require 'cider-compat)
(require 'cider-popup)
(require 'nrepl-client)
(require 'url-vars)
(defconst cider-grimoire-url "http://conj.io/")
(defun cider-grimoire-replace-special (name)
"Convert the dashes in NAME to a grimoire friendly format."
(thread-last name
(replace-regexp-in-string "\\?" "_QMARK_")
(replace-regexp-in-string "\\." "_DOT_")
(replace-regexp-in-string "\\/" "_SLASH_")
(replace-regexp-in-string "\\(\\`_\\)\\|\\(_\\'\\)" "")))
(defun cider-grimoire-url (name ns)
"Generate a grimoire search v0 url from NAME, NS."
(let ((base-url cider-grimoire-url))
(when (and name ns)
(concat base-url "search/v0/" ns "/" (cider-grimoire-replace-special name) "/"))))
(defun cider-grimoire-web-lookup (symbol)
"Look up the grimoire documentation for SYMBOL."
(if-let ((var-info (cider-var-info symbol)))
(let ((name (nrepl-dict-get var-info "name"))
(ns (nrepl-dict-get var-info "ns")))
(browse-url (cider-grimoire-url name ns)))
(error "Symbol %s not resolved" symbol)))
;;;###autoload
(defun cider-grimoire-web (&optional arg)
"Open grimoire documentation in the default web browser.
Prompts for the symbol to use, or uses the symbol at point, depending on
the value of `cider-prompt-for-symbol'. With prefix arg ARG, does the
opposite of what that option dictates."
(interactive "P")
(funcall (cider-prompt-for-symbol-function arg)
"Grimoire doc for"
#'cider-grimoire-web-lookup))
(defun cider-create-grimoire-buffer (content)
"Create a new grimoire buffer with CONTENT."
(with-current-buffer (cider-popup-buffer "*cider grimoire*" t)
(read-only-mode -1)
(insert content)
(read-only-mode +1)
(goto-char (point-min))
(current-buffer)))
(defun cider-grimoire-lookup (symbol)
"Look up the grimoire documentation for SYMBOL."
(if-let ((var-info (cider-var-info symbol)))
(let ((name (nrepl-dict-get var-info "name"))
(ns (nrepl-dict-get var-info "ns"))
(url-request-method "GET")
(url-request-extra-headers `(("Content-Type" . "text/plain"))))
(url-retrieve (cider-grimoire-url name ns)
(lambda (_status)
;; we need to strip the http header
(goto-char (point-min))
(re-search-forward "^$")
(delete-region (point-min) (point))
(delete-blank-lines)
;; and create a new buffer with whatever is left
(pop-to-buffer (cider-create-grimoire-buffer (buffer-string))))))
(error "Symbol %s not resolved" symbol)))
;;;###autoload
(defun cider-grimoire (&optional arg)
"Open grimoire documentation in a popup buffer.
Prompts for the symbol to use, or uses the symbol at point, depending on
the value of `cider-prompt-for-symbol'. With prefix arg ARG, does the
opposite of what that option dictates."
(interactive "P")
(funcall (cider-prompt-for-symbol-function arg)
"Grimoire doc for"
#'cider-grimoire-lookup))
(provide 'cider-grimoire)