--- /dev/null
+;;; TCP/IP stream emulation for GNU Emacs
+;; Copyright (C) 1988, 1989, 1993 Free Software Foundation, Inc.
+
+;;; Author: Masanobu Umeda
+;;; Maintainer: umerin@mse.kyutech.ac.jp
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY. No author or distributor
+;; accepts responsibility to anyone for the consequences of using it
+;; or for whether it serves any particular purpose or works at all,
+;; unless he says so in writing. Refer to the GNU Emacs General Public
+;; License for full details.
+
+;; Everyone is granted permission to copy, modify and redistribute
+;; GNU Emacs, but only under the conditions described in the
+;; GNU Emacs General Public License. A copy of this license is
+;; supposed to have been given to you along with GNU Emacs so you
+;; can know your rights and responsibilities. It should be in a
+;; file named COPYING. Among other things, the copyright notice
+;; and this notice must be preserved on all copies.
+
+;; Notes on TCP package:
+;;
+;; This package provides a TCP/IP stream emulation for GNU Emacs. If
+;; the function `open-network-stream' is not defined in Emacs, but
+;; your operating system has a capability of network stream
+;; connection, this tcp package can be used for communicating with
+;; NNTP server.
+;;
+;; The tcp package runs inferior process which actually does the role
+;; of `open-network-stream'. The program `tcp' provided with this
+;; package can be used for such purpose. Before loading the package,
+;; compile `tcp.c' and install it as `tcp' in a directory in the emacs
+;; search path. If you modify `tcp.c', please send diffs to the author
+;; of GNUS. I'll include some of them in the next releases.
+
+(provide 'tcp)
+
+(defvar tcp-program-name "tcp"
+ "*The name of the program emulating open-network-stream function.")
+
+(defun open-network-stream (name buffer host service)
+ "Open a TCP connection for a service to a host.
+Returns a subprocess-object to represent the connection.
+Input and output work as for subprocesses; `delete-process' closes it.
+Args are NAME BUFFER HOST SERVICE.
+NAME is name for process. It is modified if necessary to make it unique.
+BUFFER is the buffer (or buffer-name) to associate with the process.
+ Process output goes at end of that buffer, unless you specify
+ an output stream or filter function to handle the output.
+ BUFFER may be also nil, meaning that this process is not associated
+ with any buffer
+Third arg is name of the host to connect to.
+Fourth arg SERVICE is name of the service desired, or an integer
+ specifying a port number to connect to."
+ (let ((proc (start-process name buffer
+ tcp-program-name
+ host
+ (if (stringp service)
+ service
+ (int-to-string service))
+ )))
+ (process-kill-without-query proc)
+ ;; Return process
+ proc
+ ))
--- /dev/null
+;;; Timezone package for GNU Emacs
+
+;; Copyright(C) 1990, 1991, 1992 Free Software Foundation, Inc.
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs 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.
+
+;; GNU Emacs 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, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+;;; Code:
+
+(provide 'timezone)
+
+(defvar timezone-world-timezones
+ '(("PST" . -800)
+ ("PDT" . -700)
+ ("MST" . -700)
+ ("MDT" . -600)
+ ("CST" . -600)
+ ("CDT" . -500)
+ ("EST" . -500)
+ ("EDT" . -400)
+ ("AST" . -400) ;by <clamen@CS.CMU.EDU>
+ ("NST" . -330) ;by <clamen@CS.CMU.EDU>
+ ("GMT" . +000)
+ ("BST" . +100)
+ ("MET" . +100)
+ ("EET" . +200)
+ ("JST" . +900)
+ ("GMT+1" . +100) ("GMT+2" . +200) ("GMT+3" . +300)
+ ("GMT+4" . +400) ("GMT+5" . +500) ("GMT+6" . +600)
+ ("GMT+7" . +700) ("GMT+8" . +800) ("GMT+9" . +900)
+ ("GMT+10" . +1000) ("GMT+11" . +1100) ("GMT+12" . +1200) ("GMT+13" . +1300)
+ ("GMT-1" . -100) ("GMT-2" . -200) ("GMT-3" . -300)
+ ("GMT-4" . -400) ("GMT-5" . -500) ("GMT-6" . -600)
+ ("GMT-7" . -700) ("GMT-8" . -800) ("GMT-9" . -900)
+ ("GMT-10" . -1000) ("GMT-11" . -1100) ("GMT-12" . -1200))
+ "*Time differentials of timezone from GMT in hour.")
+
+(defvar timezone-months-assoc
+ '(("JAN" . 1)("FEB" . 2)("MAR" . 3)
+ ("APR" . 4)("MAY" . 5)("JUN" . 6)
+ ("JUL" . 7)("AUG" . 8)("SEP" . 9)
+ ("OCT" . 10)("NOV" . 11)("DEC" . 12))
+ "Alist of first three letters of a month and its numerical representation.")
+
+(defun timezone-make-date-arpa-standard (date &optional local timezone)
+ "Convert DATE to an arpanet standard date.
+Optional 1st argumetn LOCAL specifies the default local timezone of the DATE.
+Optional 2nd argument TIMEZONE specifies a timezone to be represented in."
+ (let* ((date (timezone-parse-date date))
+ (year (string-to-int (aref date 0)))
+ (month (string-to-int (aref date 1)))
+ (day (string-to-int (aref date 2)))
+ (time (timezone-parse-time (aref date 3)))
+ (hour (string-to-int (aref time 0)))
+ (minute (string-to-int (aref time 1)))
+ (second (string-to-int (aref time 2)))
+ (local (or (aref date 4) local)) ;Use original if defined
+ (timezone (or timezone local))
+ (diff (- (timezone-zone-to-minute timezone)
+ (timezone-zone-to-minute local)))
+ (new (timezone-fix-time year month day
+ hour (+ minute diff) second)))
+ (timezone-make-arpa-date (aref new 0) (aref new 1) (aref new 2)
+ (timezone-make-time-string
+ (aref new 3) (aref new 4) (aref new 5))
+ timezone)
+ ))
+
+(defun timezone-make-date-sortable (date &optional local timezone)
+ "Convert DATE to a sortable date string.
+Optional 1st argumetn LOCAL specifies the default local timezone of the DATE.
+Optional 2nd argument TIMEZONE specifies a timezone to be represented in."
+ (let* ((date (timezone-parse-date date))
+ (year (string-to-int (aref date 0)))
+ (month (string-to-int (aref date 1)))
+ (day (string-to-int (aref date 2)))
+ (time (timezone-parse-time (aref date 3)))
+ (hour (string-to-int (aref time 0)))
+ (minute (string-to-int (aref time 1)))
+ (second (string-to-int (aref time 2)))
+ (local (or (aref date 4) local)) ;Use original if defined
+ (timezone (or timezone local))
+ (diff (- (timezone-zone-to-minute timezone)
+ (timezone-zone-to-minute local)))
+ (new (timezone-fix-time year month day
+ hour (+ minute diff) second)))
+ (timezone-make-sortable-date (aref new 0) (aref new 1) (aref new 2)
+ (timezone-make-time-string
+ (aref new 3) (aref new 4) (aref new 5)))
+ ))
+
+\f
+;;
+;; Parsers and Constructors of Date and Time
+;;
+
+(defun timezone-make-arpa-date (year month day time &optional timezone)
+ "Make arpanet standard date string from YEAR, MONTH, DAY, and TIME.
+Optional argument TIMEZONE specifies a time zone."
+ (format "%02d %s %4d %s%s"
+ day
+ (capitalize (car (rassq month timezone-months-assoc)))
+ ;;(- year (* (/ year 100) 100)) ;1990 -> 90
+ (if (< year 100) (+ year 1900) year) ;90->1990
+ time
+ (if timezone (concat " " timezone) "")
+ ))
+
+(defun timezone-make-sortable-date (year month day time)
+ "Make sortable date string from YEAR, MONTH, DAY, and TIME."
+ (format "%4d%02d%02d%s"
+ ;;(- year (* (/ year 100) 100)) ;1990 -> 90
+ (if (< year 100) (+ year 1900) year) ;90->1990
+ month day time))
+
+(defun timezone-make-time-string (hour minute second)
+ "Make time string from HOUR, MINUTE, and SECOND."
+ (format "%02d:%02d:%02d" hour minute second))
+
+(defun timezone-parse-date (date)
+ "Parse DATE and return a vector [year month day time timezone].
+19 is prepended to year if necessary. Timezone may be NIL if nothing.
+Understand the following styles:
+ (1) 14 Apr 89 03:20[:12] [GMT]
+ (2) Fri, 17 Mar 89 4:01[:33] [GMT]
+ (3) Mon Jan 16 16:12[:37] [GMT] 1989
+ (4) 6 May 1992 1641-JST (Wednesday)"
+ (let ((date (or date ""))
+ (year nil)
+ (month nil)
+ (day nil)
+ (time nil)
+ (zone nil)) ;This may be nil.
+ (cond ((string-match
+ "\\([0-9]+\\)[ \t]+\\([^ \t,]+\\)[ \t]+\\([0-9]+\\)[ \t]+\\([0-9]+:[0-9:]+\\)[ \t]*\\'" date)
+ ;; Styles: (1) and (2) without timezone
+ (setq year 3 month 2 day 1 time 4 zone nil))
+ ((string-match
+ "\\([0-9]+\\)[ \t]+\\([^ \t,]+\\)[ \t]+\\([0-9]+\\)[ \t]+\\([0-9]+:[0-9:]+\\)[ \t]*\\([-+a-zA-Z0-9]+\\)" date)
+ ;; Styles: (1) and (2) with timezone and buggy timezone
+ (setq year 3 month 2 day 1 time 4 zone 5))
+ ((string-match
+ "\\([^ \t,]+\\)[ \t]+\\([0-9]+\\)[ \t]+\\([0-9]+:[0-9:]+\\)[ \t]+\\([0-9]+\\)" date)
+ ;; Styles: (3) without timezone
+ (setq year 4 month 1 day 2 time 3 zone nil))
+ ((string-match
+ "\\([^ \t,]+\\)[ \t]+\\([0-9]+\\)[ \t]+\\([0-9]+:[0-9:]+\\)[ \t]+\\([-+a-zA-Z0-9]+\\)[ \t]+\\([0-9]+\\)" date)
+ ;; Styles: (3) with timezoen
+ (setq year 5 month 1 day 2 time 3 zone 4))
+ ((string-match
+ "\\([0-9]+\\)[ \t]+\\([^ \t,]+\\)[ \t]+\\([0-9]+\\)[ \t]+\\([0-9]+\\)[ \t]*\\([-+a-zA-Z0-9]+\\)" date)
+ ;; Styles: (4) with timezone
+ (setq year 3 month 2 day 1 time 4 zone 5))
+ )
+ (if year
+ (progn
+ (setq year
+ (substring date (match-beginning year) (match-end year)))
+ ;; It is now Dec 1992. 8 years before the end of the World.
+ (if (< (length year) 4)
+ (setq year (concat "19" (substring year -2 nil))))
+ (setq month
+ (int-to-string
+ (cdr
+ (assoc
+ (upcase
+ ;; Don't use `match-end' in order to take 3
+ ;; letters from the beginning.
+ (substring date
+ (match-beginning month)
+ (+ (match-beginning month) 3)))
+ timezone-months-assoc))))
+ (setq day
+ (substring date (match-beginning day) (match-end day)))
+ (setq time
+ (substring date (match-beginning time) (match-end time)))))
+ (if zone
+ (setq zone
+ (substring date (match-beginning zone) (match-end zone))))
+ ;; Return a vector.
+ (if year
+ (vector year month day time zone)
+ (vector "0" "0" "0" "0" nil))
+ ))
+
+(defun timezone-parse-time (time)
+ "Parse TIME (HH:MM:SS) and return a vector [hour minute second].
+Recognize HH:MM:SS, HH:MM, HHMMSS, HHMM."
+ (let ((time (or time ""))
+ (hour nil)
+ (minute nil)
+ (second nil))
+ (cond ((string-match "\\`\\([0-9]+\\):\\([0-9]+\\):\\([0-9]+\\)\\'" time)
+ ;; HH:MM:SS
+ (setq hour 1 minute 2 second 3))
+ ((string-match "\\`\\([0-9]+\\):\\([0-9]+\\)\\'" time)
+ ;; HH:MM
+ (setq hour 1 minute 2 second nil))
+ ((string-match "\\`\\([0-9][0-9]\\)\\([0-9][0-9]\\)\\([0-9][0-9]\\)\\'" time)
+ ;; HHMMSS
+ (setq hour 1 minute 2 second 3))
+ ((string-match "\\`\\([0-9][0-9]\\)\\([0-9][0-9]\\)\\'" time)
+ ;; HHMM
+ (setq hour 1 minute 2 second nil))
+ )
+ ;; Return [hour minute second]
+ (vector
+ (if hour
+ (substring time (match-beginning hour) (match-end hour)) "0")
+ (if minute
+ (substring time (match-beginning minute) (match-end minute)) "0")
+ (if second
+ (substring time (match-beginning second) (match-end second)) "0"))
+ ))
+
+\f
+;; Miscellaneous
+
+(defun timezone-zone-to-minute (timezone)
+ "Translate TIMEZONE (in zone name or integer) to integer minute."
+ (if timezone
+ (progn
+ (setq timezone
+ (or (cdr (assoc (upcase timezone) timezone-world-timezones))
+ ;; +900
+ timezone))
+ (if (stringp timezone)
+ (setq timezone (string-to-int timezone)))
+ ;; Taking account of minute in timezone.
+ ;; HHMM -> MM
+ ;;(+ (* 60 (/ timezone 100)) (% timezone 100))
+ ;; ANSI C compliance about truncation of integer division
+ ;; by eggert@twinsun.com (Paul Eggert)
+ (let* ((abszone (max timezone (- timezone)))
+ (minutes (+ (* 60 (/ abszone 100)) (% abszone 100))))
+ (if (< timezone 0) (- minutes) minutes)))
+ 0))
+
+(defun timezone-fix-time (year month day hour minute second)
+ "Fix date and time."
+ ;; MINUTE may be larger than 60 or smaller than -60.
+ (let ((hour-fix
+ (if (< minute 0)
+ ;;(/ (- minute 59) 60) (/ minute 60)
+ ;; ANSI C compliance about truncation of integer division
+ ;; by eggert@twinsun.com (Paul Eggert)
+ (- (/ (- 59 minute) 60)) (/ minute 60))))
+ (setq hour (+ hour hour-fix))
+ (setq minute (- minute (* 60 hour-fix))))
+ ;; HOUR may be larger than 24 or smaller than 0.
+ (cond ((<= 24 hour) ;24 -> 00
+ (setq hour (- hour 24))
+ (setq day (1+ day))
+ (if (< (timezone-last-day-of-month month year) day)
+ (progn
+ (setq month (1+ month))
+ (setq day 1)
+ (if (< 12 month)
+ (progn
+ (setq month 1)
+ (setq year (1+ year))
+ ))
+ )))
+ ((> 0 hour)
+ (setq hour (+ hour 24))
+ (setq day (1- day))
+ (if (> 1 day)
+ (progn
+ (setq month (1- month))
+ (if (> 1 month)
+ (progn
+ (setq month 12)
+ (setq year (1- year))
+ ))
+ (setq day (timezone-last-day-of-month month year))
+ )))
+ )
+ (vector year month day hour minute second))
+
+;; Partly copied from Calendar program by Edward M. Reingold.
+;; Thanks a lot.
+
+(defun timezone-last-day-of-month (month year)
+ "The last day in MONTH during YEAR."
+ (if (and (= month 2) (timezone-leap-year-p year))
+ 29
+ (aref [31 28 31 30 31 30 31 31 30 31 30 31] (1- month))))
+
+(defun timezone-leap-year-p (year)
+ "Returns t if YEAR is a Gregorian leap year."
+ (or (and (zerop (% year 4))
+ (not (zerop (% year 100))))
+ (zerop (% year 400))))
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