498 lines
17 KiB
EmacsLisp
498 lines
17 KiB
EmacsLisp
;;; idec.el --- GNU Emacs client for IDEC network
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;; Copyright (c) 2017 Denis Zheleztsov
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;; Author: Denis Zheleztsov <difrex.punk@gmail.com>
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;; Keywords: lisp,network,IDEC
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;; Version: 0.1
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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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;; In active developent.
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;; Fetched node must be support modern IDEC extensions like /list.txt, /x/c, etc.
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;;; Code:
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;; CUSTOMIZATION
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;; ;;;;;;;;;;;;;
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(defgroup idec nil
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"IDEC configuration."
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:group 'network)
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;; Not used
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(defcustom idec-nodes-list
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'("http://idec.spline-online.tk/"
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"https://ii-net.tk/ii/ii-point.php?q=/")
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"List of IDEC nodes."
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:type 'alist
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:group 'idec)
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(defcustom idec-primary-node nil
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"Primary node to send messages."
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:type 'string
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:group 'idec)
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;; Never used at this time.
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(defcustom idec-use-list-txt t
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"Use /list.txt extension."
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:group 'idec)
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(defcustom idec-smart-fetch t
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"Enable smat fetching;
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Download only new messages; Not implemented."
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:type 'boolean
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:group 'idec)
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(defcustom idec-download-limit "50"
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"Limit of download messages;
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Not used if `idec-smart-fetching' is not nil."
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:type 'string
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:group 'idec)
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(defcustom idec-download-offset "-50"
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"Offset of download messages;
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Not used if `idec-smart-fetching' is not nil."
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:type 'string
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:group 'idec)
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(defcustom idec-echo-subscriptions nil
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"List of subribes echoes."
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:type 'string
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:group 'idec)
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(defcustom idec-mail-dir "~/.emacs.d/idec-mail"
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"Directory to store mail."
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:type 'string
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:group 'idec)
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(defgroup idec-accounts nil
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"IDEC accounts settings."
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:group 'idec)
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(defcustom idec-account-nick nil
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"Account nickname."
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:type 'string
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:group 'idec-accounts)
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(defcustom idec-account-node nil
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"Node to send messages."
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:type 'string
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:group 'idec-accounts)
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(defcustom idec-account-auth nil
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"Account authstring."
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:type 'string
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:group 'idec-accounts)
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;; END OF CUSTOMIZATION
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;; ;;;;;;;;;;;;;;;;;;;;
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;; VARIABLES
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;; ;;;;;;;;;
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(defvar smart-download-limit nil
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"Used with `idec-smart-fetch'.")
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(defvar smart-download-offset nil
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"Used with `idec-smart-fetch'.")
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(defvar new-messages-list '()
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"New messages for display.")
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;; END OF VARIABLES
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;; ;;;;;;;;;;;;;;;;
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;; MODE
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;; ;;;;
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(defun idec-close-message-buffer ()
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"Close buffer with message."
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(kill-this-buffer))
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(defvar idec-mode-hook nil)
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(defvar idec-mode-map
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(let ((map (make-keymap)))
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(define-key map "\C-c \C-c" 'kill-this-buffer)
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(define-key map "\C-c \C-n" 'idec-next-message)
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(define-key map "\C-c \C-b" 'idec-previous-message)
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map)
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"Keymapping for IDEC mode.")
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(defconst idec-font-lock-keywords-1
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(list
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'("\\<\\(\\(?:Echo\\|From\\|Subj\\|T\\(?:ime\\|o\\)\\):\\)\\>" . font-lock-variable-name-face)
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'("\\('\\w*'\\)" . font-lock-variable-name-face))
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"Minimal highlighting expressions for IDEC mode.")
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(defconst idec-font-lock-keywords-2
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(append idec-font-lock-keywords-1 (list
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'("\\<\\(>>?.*\\)\s\\>" . font-lock-comment-face)
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'("\\('\\w*'\\)" . font-lock-variable-name-face)))
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"Quotes highligting for IDEC mode.")
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(defvar idec-font-lock-keywords idec-font-lock-keywords-2
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"Default highlighting expressions for IDEC mode.")
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(defvar idec-mode-syntax-table
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(let ((st (make-syntax-table)))))
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(defun idec-mode ()
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"Major mode for view and editing IDEC messages."
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(interactive)
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(kill-all-local-variables)
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;; Mode definition
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(set-syntax-table idec-mode-syntax-table)
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(use-local-map idec-mode-map)
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(set (make-local-variable 'font-lock-defaults) '(idec-font-lock-keywords))
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(setq major-mode 'idec-mode)
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(setq mode-name "[IDEC]")
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(setq imenu-generic-expression "*IDEC")
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(run-hooks 'idec-mode-hook))
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;; NAVIGATION FUNCTIONS
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;; ;;;;;;;;;;;;;;;;;;;;
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(defun idec-next-message ()
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"Show next message."
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(interactive)
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(kill-this-buffer)
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(forward-button 1)
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(push-button))
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(defun idec-previous-message ()
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"Show next message."
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(interactive)
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(kill-this-buffer)
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(backward-button 1)
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(push-button))
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;; END OF NAVIGATION FUNCTIONS
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;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; END OF MODE
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;; ;;;;;;;;;;;
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;; FUNCTIONS
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;; ;;;;;;;;;
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(defun create-echo-mail-dir (echo)
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"Create ECHO directory inside `idec-mail-dir'."
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(if (file-exists-p idec-mail-dir)
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(message idec-mail-dir)
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(mkdir idec-mail-dir))
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(if (file-exists-p (concat idec-mail-dir "/" echo))
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(message (concat idec-mail-dir "/" echo))
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(mkdir (concat idec-mail-dir "/" echo))))
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(defun get-echo-dir (echo)
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"Get ECHO dir from `idec-mail-dir'."
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(concat idec-mail-dir (concat "/" echo)))
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(defun filename-to-store (content id)
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"Make filename from CONTENT unixtime and ID."
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(concat (nth 2 (split-string content)) "-" id))
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(defun get-message-file (echo id)
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"Get ECHO message filename by ID."
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(concat (get-echo-dir echo) "/" id))
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(defun get-counter-file (echo)
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"Get ECHO counter filename."
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(concat (get-echo-dir echo) "/counter"))
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(defun store-message (content echo id)
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"Store CONTENT from ECHO message in `idec-mail-dir' with it ID."
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(create-echo-mail-dir echo)
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(write-region content nil (get-message-file echo id)))
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(defun store-echo-counter (echo)
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"Store count messages in ECHO."
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(create-echo-mail-dir echo)
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(write-region (echo-messages-count echo) nil (get-counter-file echo)))
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(defun check-message-in-echo (msg echo)
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"Check if exists message MSG in ECHO `idec-mail-dir'."
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(not (f-file? (get-message-file echo msg))))
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;; Message fields pasing
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(defun trim-string (string)
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"Remove white spaces in beginning and ending of STRING;
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White space here is any of: space, tab, Emacs newline (line feed, ASCII 10)."
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(replace-regexp-in-string "\\`[ \t\n]*" "" (replace-regexp-in-string "[ \t\n]*\\'" "" string)))
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(defun get-message-tags (msg)
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"Get MSG tags."
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(trim-string (nth 0 (split-string msg "\n"))))
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(defun get-message-echo (msg)
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"Get MSG echo."
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(trim-string (nth 1 (split-string msg "\n"))))
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(defun get-message-time (msg)
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"Get MSG time."
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(trim-string (current-time-string
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(car (read-from-string (nth 2 (split-string msg "\n")))))))
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(defun get-message-author (msg)
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"Get MSG author."
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(trim-string (nth 3 (split-string msg "\n"))))
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(defun get-message-address (msg)
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"Get MSG address."
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(trim-string (nth 4 (split-string msg "\n"))))
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(defun get-message-recipient (msg)
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"Get MSG recipient."
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(trim-string (nth 5 (split-string msg "\n"))))
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(defun get-message-subj (msg)
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"Get MSG subject."
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(trim-string (nth 6 (split-string msg "\n"))))
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(defun get-message-body (msg)
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"Get MSG body text.
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Return list with body content."
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(-drop 8 (split-string msg "\n")))
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(defun get-longest-field (field msg-list)
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"Return longest FIELD in MSG-LIST."
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(defvar field-legth '())
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(defvar field-max nil)
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(setq field-max 0)
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(dolist (msg msg-list)
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(when (> (length (get-message-field msg field))
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field-max)
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(setq field-max (length (get-message-field msg field)))))
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field-max)
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(defun get-message-field (msg field)
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"Get message MSG FIELD."
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(defvar fields-hash (make-hash-table :test 'equal)
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"Hashtable with MSG parsing functions.")
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;; Define hashtable first
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(puthash "tags" (get-message-tags msg) fields-hash)
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(puthash "echo" (get-message-echo msg) fields-hash)
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(puthash "time" (get-message-time msg) fields-hash)
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(puthash "author" (get-message-author msg) fields-hash)
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(puthash "address" (get-message-address msg) fields-hash)
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(puthash "recipient" (get-message-recipient msg) fields-hash)
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(puthash "subj" (get-message-subj msg) fields-hash)
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(puthash "body" (get-message-body msg) fields-hash)
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(gethash field fields-hash))
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(defun get-url-content (url)
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"Get URL content and return it without headers."
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(with-current-buffer
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(url-retrieve-synchronously url)
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(goto-char (point-min))
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(re-search-forward "^$")
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(forward-line)
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(delete-region (point) (point-min))
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(buffer-string)))
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(defun idec-load-new-messages ()
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"Load new messages from IDEC `idec-primary-node'."
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(interactive)
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(defvar current-echo nil)
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(defvar new-messages '())
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(let (new-messages-list)
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(dolist (line (split-string (download-subscriptions) "\n"))
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(if (string-match "\\." line)
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(and (setq current-echo line)
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(store-echo-counter line))
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(when (and (check-message-in-echo line current-echo)
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(> (length line) 1))
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(download-message current-echo line)))))
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(display-new-messages))
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(defun display-message (msg)
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"Display message MSG in new buffer in idec-mode."
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(with-output-to-temp-buffer (get-buffer-create (concat
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"*IDEC: "
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(decode-coding-string (get-message-field msg "subj") 'utf-8)
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"*"))
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;; Run in IDEC mode
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(switch-to-buffer (concat "*IDEC: " (decode-coding-string (get-message-field msg "subj") 'utf-8) "*"))
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(princ (concat "From: " (get-message-field msg "author") "(" (get-message-field msg "address") ")" "\n"))
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(princ (concat "To: " (get-message-field msg "recipient") "\n"))
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(princ (concat "Echo: " (get-message-field msg "echo") "\n"))
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(princ (concat "At: " (get-message-field msg "time") "\n"))
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(princ (concat "Subject: " (get-message-field msg "subj") "\n"))
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(princ (concat "__________________________________\n\n"
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(s-join "\n" (get-message-field msg "body"))))
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(princ "\n__________________________________\n")
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(princ "[")
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(insert-button "Answer"
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'action (lambda (x) (message "OK")))
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(princ "]")
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(princ "\t[")
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(insert-button "Answer with quote")
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(princ "]")
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(add-text-properties (point-min) (point-max) 'read-only))
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(point-max)
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(idec-mode))
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(defun display-new-messages ()
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"Display new fetched messages from `new-messages-list'."
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(with-output-to-temp-buffer (get-buffer-create "*IDEC: New messages*")
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(switch-to-buffer "*IDEC: New messages*")
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(if (= (length new-messages-list) 0)
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(princ "No new messages.")
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(dolist (msg new-messages-list)
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;; Write message subj
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(insert-text-button (concat (get-message-field msg "subj")
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(make-string
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(- (get-longest-field "subj" new-messages-list)
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(length (get-message-field msg "subj")))
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? ))
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'help-echo "Read message"
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'plain-msg msg
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'action (lambda (x) (display-message (button-get x 'plain-msg))))
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;; Write message time and echo
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(princ (format " %s(%s)%s%s\t%s\n"
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(get-message-field msg "author")
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(get-message-field msg "address")
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(make-string (-
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(+
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(get-longest-field "author" new-messages-list)
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(get-longest-field "address" new-messages-list)
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1)
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(+
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(length (get-message-field msg "author"))
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(length (get-message-field msg "address")))
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)
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? )
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(get-message-field msg "echo")
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(get-message-field msg "time")))
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(add-to-invisibility-spec '(msg . t)))))
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(idec-mode))
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(defun get-message-content (echo msg)
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"Get ECHO MSG content from `idec-primary-node'."
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(decode-coding-string
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(base64-decode-string
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(nth 1 (split-string (get-url-content (make-messages-url msg)) ":")))
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'utf-8))
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(defun download-message (echo msg)
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"Download ECHO message MSG to `idec-mail-dir'."
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(message (concat "Download message " msg " to " echo))
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(defvar message-content)
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(if (string= "" msg)
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(message "Nil message")
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(when (and (not (string= "" msg))
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(check-message-in-echo msg echo))
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(setq message-content (get-message-content echo msg))
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(store-message message-content echo msg)
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(setq new-messages-list (push message-content new-messages-list)))))
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(defun download-subscriptions ()
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"Download messages from echoes defined in `idec-echo-subscriptions' from `idec-primary-node'."
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(get-url-content
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(make-echo-url (split-string idec-echo-subscriptions ","))))
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;; ECHOES FUNCTIONS
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;; ;;;;;;;;;;;;;;;;
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(defun make-echo-url (echoes)
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"Make ECHOES url to retreive messages from `idec-primary-node';
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with `idec-download-offset' and `idec-download-limit'."
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;; Check ECHOES is list
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(if (listp echoes)
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;; Required GNU Emacs >= 25.3
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(message (concat idec-primary-node "u/e/"
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(s-join "/" echoes) "/" idec-download-offset ":" idec-download-limit))
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(message (concat idec-primary-node "u/e/" echoes "/" idec-download-offset ":" idec-download-limit))))
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(defun make-messages-url (messages)
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"Make MESSAGES url to retreive messages from `idec-primary-node'."
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;; Check ECHOES is list
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(if (listp messages)
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;; Required GNU Emacs >= 25.3
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(message (concat idec-primary-node "u/m/"
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(s-join "/" messages)))
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(message (concat idec-primary-node "u/m/" messages))))
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(defun make-count-url (echo)
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"Return messages count url in `idec-primary-node' from ECHO."
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(concat idec-primary-node "/x/c/" echo))
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(defun echo-messages-count (echo)
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"Get messages count in ECHO."
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(nth 1 (split-string
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(get-url-content (make-count-url echo)) ":")))
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(defun display-echo-messages (messages)
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"Display downloaded MESSAGES from echo."
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(with-output-to-temp-buffer (get-buffer-create (concat "*IDEC: browse echo*"))
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(switch-to-buffer "*IDEC: browse echo*")
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(princ messages)))
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(defun load-echo-messages (echo)
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"Load messages from ECHO."
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(store-echo-counter echo)
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(display-echo-messages (get-url-content (make-echo-url echo))))
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(defun proccess-echo-message (msg echo)
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"Download new message MSG in ECHO."
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(with-output-to-temp-buffer (get-buffer-create "*IDEC: DEBUG*")
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(switch-to-buffer "*IDEC: DEBUG*")
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(princ msg)
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(princ echo)))
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(defun proccess-echo-list (raw-list)
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"Parse RAW-LIST from HTTP response."
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(with-output-to-temp-buffer (get-buffer-create "*IDEC: list.txt*")
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(switch-to-buffer "*IDEC: list.txt*")
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(dolist (line (split-string (decode-coding-string raw-list 'utf-8) "\n"))
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(when (not (equal line ""))
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;; Defind echo
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(defvar current-echo nil)
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(setq current-echo (nth 0 (split-string line ":")))
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;; Create clickable button
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(insert-text-button current-echo
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'action (lambda (x) (load-echo-messages (button-get x 'echo)))
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'help-echo (concat "Go to echo " current-echo)
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'echo current-echo)
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(princ (format "\t\t||%s\t\t%s\n"
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(nth 2 (split-string line ":"))
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(nth 1 (split-string line ":")))))
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))
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(idec-mode))
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(defun idec-fetch-echo-list (nodeurl)
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"Fetch echoes list from remote NODEURL."
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(proccess-echo-list (get-url-content nodeurl)))
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(defun idec-online-browse ()
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"Load echoes list.txt from node `idec-primary-node'."
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(interactive)
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(idec-fetch-echo-list (concat idec-primary-node "list.txt")))
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;; END OF ECHOES FUNCTIONS
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;; ;;;;;;;;;;;;;;;;;;;;;;;
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;; END OF FUNCTIONS
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;; ;;;;;;;;;;;;;;;;
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(provide 'idec)
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;;; idec.el ends here
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