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- ;;; gnus-gl.el --- an interface to GroupLens for Gnus
- ;; Copyright (C) 1995,96 Free Software Foundation, Inc.
-
- ;; Author: Brad Miller <bmiller@cs.umn.edu>
- ;; Keywords: news, score
-
- ;; 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, Inc., 59 Temple Place - Suite 330,
- ;; Boston, MA 02111-1307, USA.
-
- ;;; Commentary:
-
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- ;; GroupLens software and documentation is copyright (c) 1995 by Paul
- ;; Resnick (Massachusetts Institute of Technology); Brad Miller, John
- ;; Riedl, Jon Herlocker, and Joseph Konstan (University of Minnesota),
- ;; and David Maltz (Carnegie-Mellon University).
- ;;
- ;; Permission to use, copy, modify, and distribute this documentation
- ;; for non-commercial and commercial purposes without fee is hereby
- ;; granted provided that this copyright notice and permission notice
- ;; appears in all copies and that the names of the individuals and
- ;; institutions holding this copyright are not used in advertising or
- ;; publicity pertaining to this software without specific, written
- ;; prior permission. The copyright holders make no representations
- ;; about the suitability of this software and documentation for any
- ;; purpose. It is provided ``as is'' without express or implied
- ;; warranty.
- ;;
- ;; The copyright holders request that they be notified of
- ;; modifications of this code. Please send electronic mail to
- ;; grouplens@cs.umn.edu for more information or to announce derived
- ;; works.
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- ;; Author: Brad Miller
- ;;
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- ;;
- ;; User Documentation:
- ;; To use GroupLens you must load this file.
- ;; You must also register a pseudonym with the Better Bit Bureau.
- ;; http://www.cs.umn.edu/Research/GroupLens
- ;;
- ;; ---------------- For your .emacs or .gnus file ----------------
- ;;
- ;; As of version 2.5, grouplens now works as a minor mode of
- ;; gnus-summary-mode. To get make that work you just need a couple of
- ;; hooks.
- ;; (setq gnus-use-grouplens t)
- ;; (setq grouplens-pseudonym "")
- ;; (setq grouplens-bbb-host "grouplens.cs.umn.edu")
- ;;
- ;; (setq gnus-summary-default-score 0)
- ;;
- ;; USING GROUPLENS
- ;; How do I Rate an article??
- ;; Before you type n to go to the next article, hit a number from 1-5
- ;; Type r in the summary buffer and you will be prompted.
- ;; Note that when you're in grouplens-minor-mode 'r' maskes the
- ;; usual reply binding for 'r'
- ;;
- ;; What if, Gasp, I find a bug???
- ;; Please type M-x gnus-gl-submit-bug-report. This will set up a
- ;; mail buffer with the state of variables and buffers that will help
- ;; me debug the problem. A short description up front would help too!
- ;;
- ;; How do I display the prediction for an aritcle:
- ;; If you set the gnus-summary-line-format as shown above, the score
- ;; (prediction) will be shown automatically.
- ;;
- ;;
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- ;; Programmer Notes
- ;; 10/9/95
- ;; gnus-scores-articles contains the articles
- ;; When scoring is done, the call tree looks something like:
- ;; gnus-possibly-score-headers
- ;; ==> gnus-score-headers
- ;; ==> gnus-score-load-file
- ;; ==> get-all-mids (from the eval form)
- ;;
- ;; it would be nice to have one that gets called after all the other
- ;; headers have been scored.
- ;; we may want a variable gnus-grouplens-scale-factor
- ;; and gnus-grouplens-offset this would probably be either -3 or 0
- ;; to make the scores centered around zero or not.
- ;; Notes 10/12/95
- ;; According to Lars, Norse god of gnus, the simple way to insert a
- ;; call to an external function is to have a function added to the
- ;; variable gnus-score-find-files-function This new function
- ;; gnus-grouplens-score-alist will return a core alist that
- ;; has (("message-id" ("<message-id-xxxx>" score) ("<message-id-xxxy>" score))
- ;; This seems like it would be pretty inefficient, though workable.
- ;;
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- ;; TODO
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- ;;
- ;; 3. Add some more ways to rate messages
- ;; 4. Better error handling for token timeouts.
- ;;
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- ;; bugs
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- ;;
-
- ;;; Code:
-
- (require 'gnus-score)
- (require 'cl)
-
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- ;;;; User variables
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-
- (defvar gnus-summary-grouplens-line-format
- "%U%R%z%l%I%(%[%4L: %-20,20n%]%) %s\n"
- "*The line format spec in summary GroupLens mode buffers.")
-
- (defvar grouplens-pseudonym ""
- "User's pseudonym. This pseudonym is obtained during the registration process")
-
- (defvar grouplens-bbb-host "grouplens.cs.umn.edu"
- "Host where the bbbd is running" )
-
- (defvar grouplens-bbb-port 9000
- "Port where the bbbd is listening" )
-
- (defvar grouplens-newsgroups
- '("comp.lang.c++" "rec.humor" "rec.food.recipes" "comp.groupware"
- "mn.general" "rec.arts.movies" "rec.arts.movies.current-films"
- "comp.lang.java" "comp.os.linux.announce" "comp.os.linux.misc"
- "comp.os.linux.development.apps" "comp.os.linux.development.system")
- "*Groups that are part of the GroupLens experiment.")
-
- (defvar grouplens-prediction-display 'prediction-spot
- "valid values are:
- prediction-spot -- an * corresponding to the prediction between 1 and 5,
- confidence-interval -- a numeric confidence interval
- prediction-bar -- |##### | the longer the bar, the better the article,
- confidence-bar -- | ----- } the prediction is in the middle of the bar,
- confidence-spot -- ) * | the spot gets bigger with more confidence,
- prediction-num -- plain-old numeric value,
- confidence-plus-minus -- prediction +/i confidence")
-
- (defvar grouplens-score-offset 0
- "Offset the prediction by this value.
- Setting this variable to -2 would have the following effect on
- GroupLens scores:
-
- 1 --> -2
- 2 --> -1
- 3 --> 0
- 4 --> 1
- 5 --> 2
-
- The reason is that a user might want to do this is to combine
- GroupLens predictions with scores calculated by other score methods.")
-
- (defvar grouplens-score-scale-factor 1
- "This variable allows the user to magnify the effect of GroupLens scores.
- The scale factor is applied after the offset.")
-
- (defvar gnus-grouplens-override-scoring 'override
- "Tell Grouplens to override the normal Gnus scoring mechanism.
- GroupLens scores can be combined with gnus scores in one of three ways.
- 'override -- just use grouplens predictions for grouplens groups
- 'combine -- combine grouplens scores with gnus scores
- 'separate -- treat grouplens scores completely separate from gnus")
-
-
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- ;;;; Program global variables
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- (defvar grouplens-bbb-token "0"
- "Current session token number")
-
- (defvar grouplens-bbb-process nil
- "Process Id of current bbbd network stream process")
-
- (defvar grouplens-bbb-buffer nil
- "Buffer associated with the BBBD process")
-
- (defvar grouplens-rating-alist nil
- "Current set of message-id rating pairs")
-
- (defvar grouplens-current-hashtable (make-hash-table :test 'equal :size 100))
- ;; this seems like a pretty ugly way to get around the problem, but If
- ;; I don't do this, then the compiler complains when I call gethash
- ;;
- (eval-when-compile (setq grouplens-current-hashtable
- (make-hash-table :test 'equal :size 100)))
-
- (defvar grouplens-current-group nil)
-
- (defvar bbb-mid-list nil)
-
- (defvar bbb-alist nil)
-
- (defvar bbb-timeout-secs 10
- "Number of seconds to wait for some response from the BBB.
- If this times out we give up and assume that something has died..." )
-
- (defvar grouplens-previous-article nil
- "Message-ID of the last article read.")
-
- (defvar bbb-read-point)
- (defvar bbb-response-point)
-
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- ;;;; Utility Functions
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- (defun bbb-connect-to-bbbd (host port)
- (unless grouplens-bbb-buffer
- (setq grouplens-bbb-buffer
- (get-buffer-create (format " *BBBD trace: %s*" host)))
- (save-excursion
- (set-buffer grouplens-bbb-buffer)
- (make-local-variable 'bbb-read-point)
- (setq bbb-read-point (point-min))))
- ;; clear the trace buffer of old output
- (save-excursion
- (set-buffer grouplens-bbb-buffer)
- (erase-buffer))
- ;; open the connection to the server
- (setq grouplens-bbb-process nil)
- (catch 'done
- (condition-case error
- (setq grouplens-bbb-process
- (open-network-stream "BBBD" grouplens-bbb-buffer host port))
- (error (gnus-message 3 "Error: Failed to connect to BBB")
- nil))
- (and (null grouplens-bbb-process)
- (throw 'done nil))
- ;; (set-process-filter grouplens-bbb-process 'bbb-process-filter)
- (save-excursion
- (set-buffer grouplens-bbb-buffer)
- (setq bbb-read-point (point-min))
- (or (bbb-read-response grouplens-bbb-process)
- (throw 'done nil))))
- grouplens-bbb-process)
-
- ;; (defun bbb-process-filter (process output)
- ;; (save-excursion
- ;; (set-buffer (bbb-process-buffer process))
- ;; (goto-char (point-max))
- ;; (insert output)))
-
- (defun bbb-send-command (process command)
- (goto-char (point-max))
- (insert command)
- (insert "\r\n")
- (setq bbb-read-point (point))
- (setq bbb-response-point (point))
- (set-marker (process-mark process) (point)) ; process output also comes here
- (process-send-string process command)
- (process-send-string process "\r\n"))
-
- (defun bbb-read-response (process) ; &optional return-response-string)
- "This function eats the initial response of OK or ERROR from the BBB."
- (let ((case-fold-search nil)
- match-end)
- (goto-char bbb-read-point)
- (while (and (not (search-forward "\r\n" nil t))
- (accept-process-output process bbb-timeout-secs))
- (goto-char bbb-read-point))
- (setq match-end (point))
- (goto-char bbb-read-point)
- (setq bbb-read-point match-end)
- (looking-at "OK")))
-
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- ;;;; Login Functions
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- (defun bbb-login ()
- "return the token number if login is successful, otherwise return nil"
- (interactive)
- (setq grouplens-bbb-token nil)
- (if (not (equal grouplens-pseudonym ""))
- (let ((bbb-process
- (bbb-connect-to-bbbd grouplens-bbb-host grouplens-bbb-port)))
- (if bbb-process
- (save-excursion
- (set-buffer (process-buffer bbb-process))
- (bbb-send-command bbb-process
- (concat "login " grouplens-pseudonym))
- (if (bbb-read-response bbb-process)
- (setq grouplens-bbb-token (bbb-extract-token-number))
- (gnus-message 3 "Error: Grouplens login failed")))))
- (gnus-message 3 "Error: you must set a pseudonym"))
- grouplens-bbb-token)
-
- (defun bbb-extract-token-number ()
- (let ((token-pos (search-forward "token=" nil t) ))
- (if (looking-at "[0-9]+")
- (buffer-substring token-pos (match-end 0)))))
-
- (gnus-add-shutdown 'bbb-logout 'gnus)
-
- (defun bbb-logout ()
- "logout of bbb session"
- (let ((bbb-process
- (bbb-connect-to-bbbd grouplens-bbb-host grouplens-bbb-port)))
- (if bbb-process
- (save-excursion
- (set-buffer (process-buffer bbb-process))
- (bbb-send-command bbb-process (concat "logout " grouplens-bbb-token))
- (bbb-read-response bbb-process))
- nil)))
-
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- ;;;; Get Predictions
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-
- (defun bbb-build-mid-scores-alist (groupname)
- "this function can be called as part of the function to return the
- list of score files to use. See the gnus variable
- gnus-score-find-score-files-function.
-
- *Note:* If you want to use grouplens scores along with calculated scores,
- you should see the offset and scale variables. At this point, I don't
- recommend using both scores and grouplens predictions together."
- (setq grouplens-current-group groupname)
- (if (member groupname grouplens-newsgroups)
- (let* ((mid-list (bbb-get-all-mids))
- (predict-list (bbb-get-predictions mid-list groupname)))
- (setq grouplens-previous-article nil)
- ;; scores-alist should be a list of lists:
- ;; ((("message-id" ("<mid1>" score1 nil s) ("<mid2> score2 nil s))))
- ;;`((("message-id" . ,predict-list))) ; Yes, this is the return value
- (list (list (list (append (list "message-id") predict-list)))))
- nil))
-
- (defun bbb-get-predictions (midlist groupname)
- "Ask the bbb for predictions, and build up the score alist."
- (if (or (null grouplens-bbb-token)
- (equal grouplens-bbb-token "0"))
- (progn
- (gnus-message 3 "Error: You are not logged in to a BBB")
- nil)
- (gnus-message 5 "Fetching Predictions...")
- (let (predict-list
- (predict-command (bbb-build-predict-command midlist groupname
- grouplens-bbb-token))
- (bbb-process (bbb-connect-to-bbbd grouplens-bbb-host
- grouplens-bbb-port)))
- (if bbb-process
- (save-excursion
- (set-buffer (process-buffer bbb-process))
- (bbb-send-command bbb-process predict-command)
- (if (bbb-read-response bbb-process)
- (setq predict-list (bbb-get-prediction-response bbb-process))
- (gnus-message 1 "Invalid Token, login and try again")
- (ding))))
- (setq bbb-alist predict-list))))
-
- (defun bbb-get-all-mids ()
- (let ((index (nth 1 (assoc "message-id" gnus-header-index)))
- (articles gnus-newsgroup-headers)
- art this)
- (setq bbb-mid-list nil)
- (while articles
- (progn (setq art (car articles)
- this (aref art index)
- articles (cdr articles))
- (setq bbb-mid-list (cons this bbb-mid-list))))
- bbb-mid-list))
-
- (defun bbb-build-predict-command (mlist grpname token)
- (let ((cmd (concat "getpredictions " token " " grpname "\r\n"))
- art)
- (while mlist
- (setq art (car mlist)
- cmd (concat cmd art "\r\n")
- mlist (cdr mlist)))
- (setq cmd (concat cmd ".\r\n"))
- cmd))
-
- (defun bbb-get-prediction-response (process)
- (let ((case-fold-search nil)
- match-end)
- (goto-char bbb-read-point)
- (while (and (not (search-forward ".\r\n" nil t))
- (accept-process-output process bbb-timeout-secs))
- (goto-char bbb-read-point))
- (setq match-end (point))
- (goto-char (+ bbb-response-point 4)) ;; we ought to be right before OK
- (bbb-build-response-alist)))
-
- ;; build-response-alist assumes that the cursor has been positioned at
- ;; the first line of the list of mid/rating pairs. For now we will
- ;; use a prediction of 99 to signify no prediction. Ultimately, we
- ;; should just ignore messages with no predictions.
- (defun bbb-build-response-alist ()
- (let ((resp nil)
- (match-end (point)))
- (setq grouplens-current-hashtable (make-hash-table :test 'equal :size 100))
- (while
- (cond ((looking-at "\\(<.*>\\) :nopred=")
- (push `(,(bbb-get-mid) ,gnus-summary-default-score nil s) resp)
- (forward-line 1)
- t)
- ((looking-at "\\(<.*>\\) :pred=\\([0-9]\.[0-9][0-9]\\) :conflow=\\([0-9]\.[0-9][0-9]\\) :confhigh=\\([0-9]\.[0-9][0-9]\\)")
- (push `(,(bbb-get-mid) ,(bbb-get-pred) nil s) resp)
- (cl-puthash (bbb-get-mid)
- (list (bbb-get-pred) (bbb-get-confl) (bbb-get-confh))
- grouplens-current-hashtable)
- (forward-line 1)
- t)
- ((looking-at "\\(<.*>\\) :pred=\\([0-9]\.[0-9][0-9]\\)")
- (push `(,(bbb-get-mid) ,(bbb-get-pred) nil s) resp)
- (cl-puthash (bbb-get-mid)
- (list (bbb-get-pred) 0 0)
- grouplens-current-hashtable)
- (forward-line 1)
- t)
- (t nil)))
- resp))
-
- ;; these two functions assume that there is an active match lying
- ;; around. Where the first parenthesized expression is the
- ;; message-id, and the second is the prediction. Since gnus assumes
- ;; that scores are integer values?? we round the prediction.
- (defun bbb-get-mid ()
- (buffer-substring (match-beginning 1) (match-end 1)))
-
- (defun bbb-get-pred ()
- (let ((tpred (string-to-number (buffer-substring
- (match-beginning 2)
- (match-end 2)))))
- (if (> tpred 0)
- (round (* grouplens-score-scale-factor (+ grouplens-score-offset tpred)))
- 1)))
-
- (defun bbb-get-confl ()
- (string-to-number (buffer-substring (match-beginning 3) (match-end 3))))
-
- (defun bbb-get-confh ()
- (string-to-number (buffer-substring (match-beginning 4) (match-end 4))))
-
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- ;;;; Prediction Display
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- (defconst grplens-rating-range 4.0)
- (defconst grplens-maxrating 5)
- (defconst grplens-minrating 1)
- (defconst grplens-predstringsize 12)
-
- (defvar gnus-tmp-score)
- (defun bbb-grouplens-score (header)
- (if (eq gnus-grouplens-override-scoring 'separate)
- (bbb-grouplens-other-score header)
- (let* ((rate-string (make-string 12 ? ))
- (mid (aref header (nth 1 (assoc "message-id" gnus-header-index))))
- (hashent (gethash mid grouplens-current-hashtable))
- (iscore gnus-tmp-score)
- (low (car (cdr hashent)))
- (high (car (cdr (cdr hashent)))))
- (aset rate-string 0 ?|)
- (aset rate-string 11 ?|)
- (unless (member grouplens-current-group grouplens-newsgroups)
- (unless (equal grouplens-prediction-display 'prediction-num)
- (cond ((< iscore 0)
- (setq iscore 1))
- ((> iscore 5)
- (setq iscore 5))))
- (setq low 0)
- (setq high 0))
- (if (and (bbb-valid-score iscore)
- (not (null mid)))
- (cond
- ;; prediction-spot
- ((equal grouplens-prediction-display 'prediction-spot)
- (setq rate-string (bbb-fmt-prediction-spot rate-string iscore)))
- ;; confidence-interval
- ((equal grouplens-prediction-display 'confidence-interval)
- (setq rate-string (bbb-fmt-confidence-interval iscore low high)))
- ;; prediction-bar
- ((equal grouplens-prediction-display 'prediction-bar)
- (setq rate-string (bbb-fmt-prediction-bar rate-string iscore)))
- ;; confidence-bar
- ((equal grouplens-prediction-display 'confidence-bar)
- (setq rate-string (format "| %4.2f |" iscore)))
- ;; confidence-spot
- ((equal grouplens-prediction-display 'confidence-spot)
- (setq rate-string (format "| %4.2f |" iscore)))
- ;; prediction-num
- ((equal grouplens-prediction-display 'prediction-num)
- (setq rate-string (bbb-fmt-prediction-num iscore)))
- ;; confidence-plus-minus
- ((equal grouplens-prediction-display 'confidence-plus-minus)
- (setq rate-string (bbb-fmt-confidence-plus-minus iscore low high))
- )
- (t (gnus-message 3 "Invalid prediction display type")))
- (aset rate-string 5 ?N) (aset rate-string 6 ?A))
- rate-string)))
-
- ;;
- ;; Gnus user format function that doesn't depend on
- ;; bbb-build-mid-scores-alist being used as the score function, but is
- ;; instead called from gnus-select-group-hook. -- LAB
- (defun bbb-grouplens-other-score (header)
- (if (not (member grouplens-current-group grouplens-newsgroups))
- ;; Return an empty string
- ""
- (let* ((rate-string (make-string 12 ? ))
- (mid (aref header (nth 1 (assoc "message-id" gnus-header-index))))
- (hashent (gethash mid grouplens-current-hashtable))
- (pred (or (nth 0 hashent) 0))
- (low (nth 1 hashent))
- (high (nth 2 hashent)))
- ;; Init rate-string
- (aset rate-string 0 ?|)
- (aset rate-string 11 ?|)
- (unless (equal grouplens-prediction-display 'prediction-num)
- (cond ((< pred 0)
- (setq pred 1))
- ((> pred 5)
- (setq pred 5))))
- ;; If no entry in BBB hash mark rate string as NA and return
- (cond
- ((null hashent)
- (aset rate-string 5 ?N)
- (aset rate-string 6 ?A)
- rate-string)
-
- ((equal grouplens-prediction-display 'prediction-spot)
- (bbb-fmt-prediction-spot rate-string pred))
-
- ((equal grouplens-prediction-display 'confidence-interval)
- (bbb-fmt-confidence-interval pred low high))
-
- ((equal grouplens-prediction-display 'prediction-bar)
- (bbb-fmt-prediction-bar rate-string pred))
-
- ((equal grouplens-prediction-display 'confidence-bar)
- (format "| %4.2f |" pred))
-
- ((equal grouplens-prediction-display 'confidence-spot)
- (format "| %4.2f |" pred))
-
- ((equal grouplens-prediction-display 'prediction-num)
- (bbb-fmt-prediction-num pred))
-
- ((equal grouplens-prediction-display 'confidence-plus-minus)
- (bbb-fmt-confidence-plus-minus pred low high))
-
- (t
- (gnus-message 3 "Invalid prediction display type")
- (aset rate-string 0 ?|)
- (aset rate-string 11 ?|)
- rate-string)))))
-
- (defun bbb-valid-score (score)
- (or (equal grouplens-prediction-display 'prediction-num)
- (and (>= score grplens-minrating)
- (<= score grplens-maxrating))))
-
- (defun bbb-requires-confidence (format-type)
- (or (equal format-type 'confidence-plus-minus)
- (equal format-type 'confidence-spot)
- (equal format-type 'confidence-interval)))
-
- (defun bbb-have-confidence (clow chigh)
- (not (or (null clow)
- (null chigh))))
-
- (defun bbb-fmt-prediction-spot (rate-string score)
- (aset rate-string
- (round (* (/ (- score grplens-minrating) grplens-rating-range)
- (+ (- grplens-predstringsize 4) 1.49)))
- ?*)
- rate-string)
-
- (defun bbb-fmt-confidence-interval (score low high)
- (if (bbb-have-confidence low high)
- (format "|%4.2f-%4.2f |" low high)
- (bbb-fmt-prediction-num score)))
-
- (defun bbb-fmt-confidence-plus-minus (score low high)
- (if (bbb-have-confidence low high)
- (format "|%3.1f+/-%4.2f|" score (/ (- high low) 2.0))
- (bbb-fmt-prediction-num score)))
-
- (defun bbb-fmt-prediction-bar (rate-string score)
- (let* ((i 1)
- (step (/ grplens-rating-range (- grplens-predstringsize 4)))
- (half-step (/ step 2))
- (loc (- grplens-minrating half-step)))
- (while (< i (- grplens-predstringsize 2))
- (if (> score loc)
- (aset rate-string i ?#)
- (aset rate-string i ? ))
- (setq i (+ i 1))
- (setq loc (+ loc step)))
- )
- rate-string)
-
- (defun bbb-fmt-prediction-num (score)
- (format "| %4.2f |" score))
-
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- ;;;; Put Ratings
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-
- ;; The message-id for the current article can be found in
- ;; (aref gnus-current-headers (nth 1 (assoc "message-id" gnus-header-index)))
-
- (defun bbb-put-ratings ()
- (if (and grouplens-rating-alist
- (member gnus-newsgroup-name grouplens-newsgroups))
- (let ((bbb-process (bbb-connect-to-bbbd grouplens-bbb-host
- grouplens-bbb-port))
- (rate-command (bbb-build-rate-command grouplens-rating-alist)))
- (if bbb-process
- (save-excursion
- (set-buffer (process-buffer bbb-process))
- (gnus-message 5 "Sending Ratings...")
- (bbb-send-command bbb-process rate-command)
- (if (bbb-read-response bbb-process)
- (setq grouplens-rating-alist nil)
- (gnus-message 1
- "Token timed out: call bbb-login and quit again")
- (ding))
- (gnus-message 5 "Sending Ratings...Done"))
- (gnus-message 3 "No BBB connection")))
- (setq grouplens-rating-alist nil)))
-
- (defun bbb-build-rate-command (rate-alist)
- (let (this
- (cmd (concat "putratings " grouplens-bbb-token
- " " grouplens-current-group " \r\n")))
- (while rate-alist
- (setq this (car rate-alist)
- cmd (concat cmd (car this) " :rating=" (cadr this) ".00"
- " :time=" (cddr this) "\r\n")
- rate-alist (cdr rate-alist)))
- (concat cmd ".\r\n")))
-
- ;; Interactive rating functions.
- (defun bbb-summary-rate-article (rating &optional midin)
- (interactive "nRating: ")
- (when (member gnus-newsgroup-name grouplens-newsgroups)
- (let ((mid (or midin (bbb-get-current-id))))
- (if (and rating
- (>= rating grplens-minrating)
- (<= rating grplens-maxrating)
- mid)
- (let ((oldrating (assoc mid grouplens-rating-alist)))
- (if oldrating
- (setcdr oldrating (cons rating 0))
- (push `(,mid . (,rating . 0)) grouplens-rating-alist))
- (gnus-summary-mark-article nil (int-to-string rating)))
- (gnus-message 3 "Invalid rating")))))
-
- (defun grouplens-next-unread-article (rating)
- "Select unread article after current one."
- (interactive "P")
- (if rating (bbb-summary-rate-article rating))
- (gnus-summary-next-unread-article))
-
- (defun grouplens-best-unread-article (rating)
- "Select unread article after current one."
- (interactive "P")
- (if rating (bbb-summary-rate-article rating))
- (gnus-summary-best-unread-article))
-
- (defun grouplens-summary-catchup-and-exit (rating)
- "Mark all articles not marked as unread in this newsgroup as read,
- then exit. If prefix argument ALL is non-nil, all articles are
- marked as read."
- (interactive "P")
- (if rating
- (bbb-summary-rate-article rating))
- (if (numberp rating)
- (gnus-summary-catchup-and-exit)
- (gnus-summary-catchup-and-exit rating)))
-
- (defun grouplens-score-thread (score)
- "Raise the score of the articles in the current thread with SCORE."
- (interactive "nRating: ")
- (let (e)
- (save-excursion
- (let ((articles (gnus-summary-articles-in-thread)))
- (while articles
- (gnus-summary-goto-subject (car articles))
- (gnus-set-global-variables)
- (bbb-summary-rate-article score
- (mail-header-id
- (gnus-summary-article-header
- (car articles))))
- (setq articles (cdr articles))))
- (setq e (point)))
- (let ((gnus-summary-check-current t))
- (or (zerop (gnus-summary-next-subject 1 t))
- (goto-char e))))
- (gnus-summary-recenter)
- (gnus-summary-position-point)
- (gnus-set-mode-line 'summary))
-
-
- (defun bbb-get-current-id ()
- (if gnus-current-headers
- (aref gnus-current-headers
- (nth 1 (assoc "message-id" gnus-header-index)))
- (gnus-message 3 "You must select an article before you rate it")))
-
- (defun bbb-grouplens-group-p (group)
- "Say whether GROUP is a GroupLens group."
- (if (member group grouplens-newsgroups) " (GroupLens Enhanced)" ""))
-
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- ;; TIME SPENT READING
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- (defvar grouplens-current-starting-time nil)
-
- (defun grouplens-start-timer ()
- (setq grouplens-current-starting-time (current-time)))
-
- (defun grouplens-elapsed-time ()
- (let ((et (bbb-time-float (current-time))))
- (- et (bbb-time-float grouplens-current-starting-time))))
-
- (defun bbb-time-float (timeval)
- (+ (* (car timeval) 65536)
- (cadr timeval)))
-
- (defun grouplens-do-time ()
- (when (member gnus-newsgroup-name grouplens-newsgroups)
- (when grouplens-previous-article
- (let ((elapsed-time (grouplens-elapsed-time))
- (oldrating (assoc grouplens-previous-article
- grouplens-rating-alist)))
- (if (not oldrating)
- (push `(,grouplens-previous-article . (0 . ,elapsed-time))
- grouplens-rating-alist)
- (setcdr oldrating (cons (cadr oldrating) elapsed-time)))))
- (grouplens-start-timer)
- (setq grouplens-previous-article (bbb-get-current-id))))
-
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- ;; BUG REPORTING
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-
- (defconst gnus-gl-version "gnus-gl.el 2.12")
- (defconst gnus-gl-maintainer-address "grouplens-bug@cs.umn.edu")
- (defun gnus-gl-submit-bug-report ()
- "Submit via mail a bug report on gnus-gl"
- (interactive)
- (require 'reporter)
- (reporter-submit-bug-report gnus-gl-maintainer-address
- (concat "gnus-gl.el " gnus-gl-version)
- (list 'grouplens-pseudonym
- 'grouplens-bbb-host
- 'grouplens-bbb-port
- 'grouplens-newsgroups
- 'grouplens-bbb-token
- 'grouplens-bbb-process
- 'grouplens-current-group
- 'grouplens-previous-article
- 'grouplens-mid-list
- 'bbb-alist)
- nil
- 'gnus-gl-get-trace))
-
- (defun gnus-gl-get-trace ()
- "Insert the contents of the BBBD trace buffer"
- (if grouplens-bbb-buffer (insert-buffer grouplens-bbb-buffer)))
-
- ;;;
- ;;; Additions to make gnus-grouplens-mode Warning Warning!!
- ;;; This version of the gnus-grouplens-mode does
- ;;; not work with gnus-5.x. The "old" way of
- ;;; setting up GroupLens still works however.
- ;;;
- (defvar gnus-grouplens-mode nil
- "Minor mode for providing a GroupLens interface in Gnus summary buffers.")
-
- (defvar gnus-grouplens-mode-map nil)
-
- (unless gnus-grouplens-mode-map
- (setq gnus-grouplens-mode-map (make-keymap))
- (gnus-define-keys
- gnus-grouplens-mode-map
- "n" grouplens-next-unread-article
- "r" bbb-summary-rate-article
- "k" grouplens-score-thread
- "c" grouplens-summary-catchup-and-exit
- "," grouplens-best-unread-article))
-
- (defun gnus-grouplens-make-menu-bar ()
- (unless (boundp 'gnus-grouplens-menu)
- (easy-menu-define
- gnus-grouplens-menu gnus-grouplens-mode-map ""
- '("GroupLens"
- ["Login" bbb-login t]
- ["Rate" bbb-summary-rate-article t]
- ["Next article" grouplens-next-unread-article t]
- ["Best article" grouplens-best-unread-article t]
- ["Raise thread" grouplens-score-thread t]
- ["Report bugs" gnus-gl-submit-bug-report t]))))
-
- (defun gnus-grouplens-mode (&optional arg)
- "Minor mode for providing a GroupLens interface in Gnus summary buffers."
- (interactive "P")
- (when (and (eq major-mode 'gnus-summary-mode)
- (member gnus-newsgroup-name grouplens-newsgroups))
- (make-local-variable 'gnus-grouplens-mode)
- (setq gnus-grouplens-mode
- (if (null arg) (not gnus-grouplens-mode)
- (> (prefix-numeric-value arg) 0)))
- (when gnus-grouplens-mode
- (if (not (fboundp 'make-local-hook))
- (add-hook 'gnus-select-article-hook 'grouplens-do-time)
- (make-local-hook 'gnus-select-article-hook)
- (add-hook 'gnus-select-article-hook 'grouplens-do-time nil 'local))
- (if (not (fboundp 'make-local-hook))
- (add-hook 'gnus-exit-group-hook 'bbb-put-ratings)
- (make-local-hook 'gnus-exit-group-hook)
- (add-hook 'gnus-exit-group-hook 'bbb-put-ratings nil 'local))
- (make-local-variable 'gnus-score-find-score-files-function)
- (cond ((eq gnus-grouplens-override-scoring 'combine)
- ;; either add bbb-buld-mid-scores-alist to a list
- ;; or make a list
- (if (listp gnus-score-find-score-files-function)
- (setq gnus-score-find-score-files-function
- (append 'bbb-build-mid-scores-alist
- gnus-score-find-score-files-function ))
- (setq gnus-score-find-score-files-function
- (list gnus-score-find-score-files-function
- 'bbb-build-mid-scores-alist))))
- ;; leave the gnus-score-find-score-files variable alone
- ((eq gnus-grouplens-override-scoring 'separate)
- (add-hook 'gnus-select-group-hook
- '(lambda()
- (bbb-build-mid-scores-alist gnus-newsgroup-name))))
- ;; default is to override
- (t (setq gnus-score-find-score-files-function
- 'bbb-build-mid-scores-alist)))
- (make-local-variable 'gnus-summary-line-format)
- (setq gnus-summary-line-format
- gnus-summary-grouplens-line-format)
- (make-local-variable 'gnus-summary-line-format-spec)
- (setq gnus-summary-line-format-spec nil)
-
- ;; Set up the menu.
- (when (and menu-bar-mode
- (gnus-visual-p 'grouplens-menu 'menu))
- (gnus-grouplens-make-menu-bar))
- (unless (assq 'gnus-grouplens-mode minor-mode-alist)
- (push '(gnus-grouplens-mode " GroupLens") minor-mode-alist))
- (unless (assq 'gnus-grouplens-mode minor-mode-map-alist)
- (push (cons 'gnus-grouplens-mode gnus-grouplens-mode-map)
- minor-mode-map-alist))
- (run-hooks 'gnus-grouplens-mode-hook))))
-
- (provide 'gnus-gl)
-
- ;;; gnus-gl.el ends here
-