mirror of https://github.com/djcb/mu.git
130 lines
4.8 KiB
Scheme
130 lines
4.8 KiB
Scheme
;;
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;; Copyright (C) 2011 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
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;;
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;; This program is free software; you can redistribute it and/or modify it
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;; under the terms of the GNU General Public License as published by the
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;; Free Software Foundation; either version 3, or (at your option) any
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;; later version.
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;;
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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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;;
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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, write to the Free Software Foundation,
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;; Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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;; some guile/scheme functions to get various statistics of my mu
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;; message store.
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(define-module (mu contact)
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:use-module (oop goops)
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:use-module (mu message)
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:export (
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<mu:contact>
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mu:name
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mu:email
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mu:contact->string
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;;
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mu:for-each-contact
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;;
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mu:contacts
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;;
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<mu:contact-with-stats>
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mu:frequency
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mu:last-seen
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))
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(define-class <mu:contact> ()
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(name #:init-value #f #:accessor mu:name #:init-keyword #:name)
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(email #:init-value #f #:accessor mu:email #:init-keyword #:email))
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(define-method (mu:contacts (msg <mu:message>) contact-type)
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"Get all contacts for MSG of the given CONTACT-TYPE. MSG is of type <mu-message>,
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while contact type is either `mu:to', `mu:cc', `mu:from' or `mu:bcc'
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to get the corresponding type of contacts, or #t to get all. Returns a
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list of <mu-contact> objects."
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(map (lambda (pair) ;; a pair (na . addr)
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(make <mu:contact> #:name (car pair) #:email (cdr pair)))
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(mu:get-contacts (slot-ref msg 'msg) contact-type)))
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(define-method (mu:contacts (msg <mu:message>))
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"Get contacts of all types for message MSG as a list of <mu-contact>
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objects."
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(mu:contacts msg #t))
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(define-class <mu:contact-with-stats> (<mu:contact>)
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(tstamp #:init-value 0 #:accessor mu:timestamp #:init-keyword #:timestamp)
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(last-seen #:init-value 0 #:accessor mu:last-seen)
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(freq #:init-value 1 #:accessor mu:frequency))
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(define* (mu:for-each-contact proc #:optional (expr #t))
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"Execute PROC for each contact. PROC receives a <mu-contact> instance
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as parameter. If EXPR is specified, only consider contacts in messages
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matching EXPR."
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(let ((c-hash (make-hash-table 4096)))
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(mu:for-each-message
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(lambda (msg)
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(for-each
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(lambda (ct)
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(let ((ct-ws (make <mu:contact-with-stats>
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#:name (mu:name ct)
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#:email (mu:email ct)
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#:timestamp (mu:date msg))))
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(update-contacts-hash c-hash ct-ws)))
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(mu:contacts msg #t)))
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expr)
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(hash-for-each ;; c-hash now contains a map of email->contact
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(lambda (email ct-ws) (proc ct-ws)) c-hash)))
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(define-method (update-contacts-hash c-hash (nc <mu:contact-with-stats>))
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"Update the contacts hash with a new and/or existing contact."
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;; xc: existing-contact, nc: new contact
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(let ((xc (hash-ref c-hash (mu:email nc))))
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(if (not xc) ;; no existing contact with this email address?
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(hash-set! c-hash (mu:email nc) nc) ;; store the new contact.
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;; otherwise:
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(begin
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;; 1) update the frequency for the existing contact
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(set! (mu:frequency xc) (1+ (mu:frequency xc)))
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;; 2) update the name if the new one is not empty and its timestamp is newer
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;; in that case, also update the timestamp
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(if (and (mu:name nc) (> (string-length (mu:name nc)))
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(> (mu:timestamp nc) (mu:timestamp xc)))
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(set! (mu:name xc) (mu:name nc))
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(set! (mu:timestamp xc) (mu:timestamp nc)))
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;; 3) update last-seen with timestamp, if x's timestamp is newer
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(if (> (mu:timestamp nc) (mu:last-seen xc))
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(set! (mu:last-seen xc) (mu:timestamp nc)))
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;; okay --> now xc has been updated; but it back in the hash
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(hash-set! c-hash (mu:email xc) xc)))))
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(define-method (mu:contact->string (contact <mu:contact>) (form <string>))
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"Convert a contact to a string in format FORM, which is a string,
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either \"org-contact\", \"mutt-alias\", \"mutt-ab\",
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\"wanderlust\" \"plain\"."
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(let* ((name (mu:name contact)) (email (mu:email contact))
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(nick ;; simplistic nick guessing...
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(string-map
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(lambda(kar)
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(if (char-alphabetic? kar) kar #\_))
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(string-downcase (or name email)))))
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(cond
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((string= form "plain")
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(format #f "~a~a~a" (if name name) (if name " ") email))
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((string= form "org-contact")
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(format #f "* ~s\n:PROPERTIES:\n:EMAIL:~a\n:NICK:~a\n:END:"
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(or name email) email nick))
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((string= form "wanderlust")
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(format #f "~a ~s ~s"
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nick (or name email) email))
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((string= form "mutt-alias")
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(format #f "alias ~a ~a <~a>"
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nick (or name email) email))
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((string= form "mutt-ab")
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(format #f "~a\t~a\t"
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email (or name "")))
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(else (error "Unsupported format")))))
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