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;;; riece-log.el --- Save IRC logs
;; Copyright (C) 2003 OHASHI Akira
;; Copyright (C) 2004 Daiki Ueno
;; Author: OHASHI Akira <bg66@koka-in.org>
;; Daiki Ueno <ueno@unixuser.org>
;; Keywords: IRC, riece
;; This file is part of Riece.
;; 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 2, 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.
;;; Commentary:
;;; NOTE: This is an add-on module for Riece.
;;; Code:
(require 'riece-message)
(require 'riece-button)
(require 'riece-mcat)
(defgroup riece-log nil
"Save IRC logs."
:prefix "riece-"
:group 'riece)
(defcustom riece-log-directory
(expand-file-name "log" riece-directory)
"*Where to look for log files."
:type 'directory
:group 'riece-log)
(defcustom riece-log-directory-map nil
"*The map of channel name and directory name."
:type '(repeat (cons (string :tag "Channel name")
(string :tag "Directory name")))
:group 'riece-log)
(defcustom riece-log-flashback 10
"*If non-nil, irc messages flash back from log files.
If integer, flash back only this line numbers. t means all lines."
:type '(choice (integer :tag "line numbers")
(const t :tag "of the day")
(const nil :tag "no flashback"))
:group 'riece-log)
(defcustom riece-log-coding-system nil
"*Coding system used for log files."
:type 'symbol
:group 'riece-log)
(defcustom riece-log-file-name-coding-system
(if (boundp 'file-name-coding-system)
file-name-coding-system)
"*Coding system used for filenames of log files."
:type 'symbol
:group 'riece-log)
(defface riece-log-date-face
'((((class color)
(background dark))
(:foreground "Gray70"))
(((class color)
(background light))
(:foreground "DimGray"))
(t
(:bold t)))
"Face used for displaying \"(YYYY/MM/dd)\" extent."
:group 'riece-highlight-faces)
(defvar riece-log-date-face 'riece-log-date-face)
(defvar riece-log-lock-file nil
"Lock file for riece-log.
It is created if there is at least one instance of Emacs running riece-log.")
(defconst riece-log-file-name-regexp
(concat (riece-make-interval-regexp "[0-9]" 8) "\\.txt\\(\\.\\(.*\\)\\)?$"))
(defconst riece-log-description
"Save IRC logs.")
(defun riece-log-display-message-function (message)
(if (get 'riece-log 'riece-addon-enabled)
(let* ((coding-system-for-write
(if (featurep 'mule)
(or riece-log-coding-system
(car (get-language-info current-language-environment
'coding-system)))))
(file (riece-log-make-file-name (riece-message-target message)
coding-system-for-write))
file-name-coding-system
default-file-name-coding-system)
(unless (file-directory-p (file-name-directory file))
(make-directory (file-name-directory file) t))
(write-region (concat (format-time-string "%H:%M") " "
(riece-format-message message))
nil file t 0
riece-log-lock-file))))
(defun riece-log-make-file-name (identity coding-system)
(expand-file-name (if (featurep 'mule)
(format "%s.txt.%s"
(format-time-string "%Y%m%d")
coding-system)
(format "%s.txt"
(format-time-string "%Y%m%d")))
(riece-log-directory identity)))
(defun riece-log-list-files (identity time)
(let ((directory (riece-log-directory identity))
(time-prefix (format-time-string "%Y%m%d" (or time '(0 0))))
files)
(when (file-directory-p directory)
(setq files (nreverse (sort (directory-files
directory t
(concat "^" riece-log-file-name-regexp)
t)
#'string-lessp)))
(while (and files
(string-lessp (file-name-nondirectory (car files))
time-prefix))
(setq files (cdr files)))
files)))
(defun riece-log-directory (identity)
(let ((prefix (riece-identity-canonicalize-prefix
(riece-identity-prefix identity)))
(server (riece-identity-server identity))
(map (assoc (riece-format-identity identity) riece-log-directory-map)))
(if map
(expand-file-name (cdr map) riece-log-directory)
(expand-file-name (riece-log-encode-file-name prefix)
(expand-file-name
(concat "." (riece-log-encode-file-name server))
riece-log-directory)))))
(defun riece-log-encode-file-name (file-name)
(if riece-log-file-name-coding-system
(setq file-name
(encode-coding-string file-name
riece-log-file-name-coding-system)))
(let ((index 0)
c)
(while (string-match "[^-0-9A-Za-z_\x80-\xFF]" file-name index)
(setq c (aref file-name (match-beginning 0)))
(if (eq c ?=)
(setq file-name (replace-match "==" nil t file-name)
index (1+ (match-end 0)))
(setq file-name (replace-match (format "=%02X" c) nil t file-name)
index (+ 2 (match-end 0)))))
file-name))
(defun riece-log-decode-file-name (file-name)
(let ((index 0))
(while (string-match "==\\|=\\([0-7][0-9A-F]\\)" file-name index)
(setq file-name (replace-match
(if (eq (aref file-name (1- (match-end 0))) ?=)
"="
(char-to-string
(car (read-from-string
(concat "?\\x" (match-string 1 file-name))))))
nil t file-name)
index (1+ (match-beginning 0))))
file-name)
(if riece-log-file-name-coding-system
(setq file-name
(decode-coding-string file-name
riece-log-file-name-coding-system)))
file-name)
(defun riece-log-insert (identity lines)
"Insert logs for IDENTITY at most LINES.
If LINES is t, insert today's logs entirely."
(let* (file-name-coding-system
default-file-name-coding-system
(files (riece-log-list-files identity
(if (eq lines t) (current-time))))
name coding-system date point)
(while (and (or (eq lines t) (> lines 0)) files)
(save-restriction
(narrow-to-region (point) (point))
(if (and (string-match
(concat "^" riece-log-file-name-regexp)
(setq name (file-name-nondirectory (car files))))
(match-beginning 2))
(progn
(setq coding-system
(intern (substring name (match-beginning 2))))
(if (featurep 'xemacs)
(setq coding-system (find-coding-system coding-system))
(unless (coding-system-p coding-system)
(setq coding-system nil)))
(if coding-system
(let ((coding-system-for-read coding-system))
(insert-file-contents (car files)))
;;don't insert file contents if they use non
;;supported coding-system.
))
;;if the filename has no coding-system suffix, decode with
;;riece-log-coding-system.
(let ((coding-system-for-read riece-log-coding-system))
(insert-file-contents (car files))))
;;lines in the file contents are in reversed order.
(unless (eq lines t)
(goto-char (point-max))
(setq lines (- (forward-line (- lines))))
(delete-region (point-min) (point)))
;;add (YYYY/MM/dd) suffix on each line left in the current buffer.
(unless (equal (substring name 0 8) (format-time-string "%Y%m%d"))
(setq date (concat " (" (substring name 0 4) "/"
(substring name 4 6) "/"
(substring name 6 8) ")"))
(while (not (eobp))
(end-of-line)
(setq point (point))
(insert date)
(put-text-property point (point)
'riece-overlay-face 'riece-log-date-face)
(forward-line))
(goto-char (point-min))))
(setq files (cdr files)))))
(defun riece-log-flashback (identity)
(when riece-log-flashback
(riece-insert-info (current-buffer)
(if (eq riece-log-flashback t)
(riece-mcat "Recent messages of the day:\n")
(format (riece-mcat
"Recent messages up to %d lines:\n")
riece-log-flashback)))
(let (buffer-read-only
(point (goto-char (point-max))))
(insert (with-temp-buffer
(riece-log-insert identity riece-log-flashback)
(buffer-string)))
(goto-char point)
(while (re-search-forward
(concat "^" riece-time-prefix-regexp
"\\(<[^>]+>\\|>[^<]+<\\|([^)]+)\\|{[^}]+}\\|=[^=]+=\\)")
nil t)
(put-text-property (1+ (match-beginning 1)) (1- (match-end 1))
'riece-identity
(riece-make-identity
(buffer-substring (1+ (match-beginning 1))
(1- (match-end 1)))
(riece-identity-server identity))))
(run-hook-with-args 'riece-after-insert-functions
point (goto-char (point-max)))
(set-window-point (get-buffer-window (current-buffer))
(point)))))
(defun riece-log-dired (&optional channel)
(interactive)
(let ((directory (riece-log-directory (or channel riece-current-channel))))
(if (file-directory-p directory)
(dired directory)
(error "No log directory"))))
(defun riece-log-requires ()
(if (memq 'riece-button riece-addons)
'(riece-button)))
(defun riece-log-insinuate ()
(make-directory riece-log-directory t)
(setq riece-log-lock-file
(expand-file-name (format "!%s-%d-%d"
(riece-log-encode-file-name (system-name))
(user-uid)
(emacs-pid))
riece-log-directory))
;; FIXME: Use `riece-after-insert-functions' for trapping change,
;; notice, wallops and so on. But must add argument.
(add-hook 'riece-after-display-message-functions
'riece-log-display-message-function)
(add-hook 'riece-channel-buffer-create-functions
'riece-log-flashback))
(defun riece-log-uninstall ()
(setq riece-log-lock-file nil)
(remove-hook 'riece-after-display-message-functions
'riece-log-display-message-function)
(remove-hook 'riece-channel-buffer-create-functions
'riece-log-flashback))
(defvar riece-command-mode-map)
(defun riece-log-enable ()
(define-key riece-command-mode-map "\C-cd" 'riece-log-dired))
(defun riece-log-disable ()
(define-key riece-command-mode-map "\C-cd" nil))
(provide 'riece-log)
;;; riece-log.el ends here
|
