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|
;;;;; -*-coding: iso-8859-1;-*-
;;;;;
;;;;; Copyright (C) 1991-2002 Lysator Academic Computer Association.
;;;;;
;;;;; This file is part of the LysKOM Emacs LISP client.
;;;;;
;;;;; LysKOM 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.
;;;;;
;;;;; LysKOM 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 LysKOM; see the file COPYING. If not, write to
;;;;; Lysator, c/o ISY, Linkoping University, S-581 83 Linkoping, SWEDEN,
;;;;; or the Free Software Foundation, Inc., 675 Mass Ave, Cambridge,
;;;;; MA 02139, USA.
;;;;;
;;;;; Please mail bug reports to bug-lyskom@lysator.liu.se.
;;;;;
;;;; ================================================================
;;;; ================================================================
;;;;
;;;; This file contains primitives for the different data types
;;;; in the lyskom system. All types here have their origin in
;;;; the server. Compare the file clienttypes.el.
;;;;
;;;; Author: ceder
;;;;
;;; ============================================================
;;; Black magic...
(defmacro def-komtype (type args &rest flags)
"Define a new type named TYPE with fields ARGS and documentation DOC.
TYPE is the name of the new type; a symbol.
ARGS is a list of arguments. Each element can be a symbol or a cons whose
car is the name of the field and the cdr is a property list for the field.
The special symbol &optional indicates start of fields that will be
optional in the constructor argument list.
Legal fiels properties are:
:default val In the constructor, if the value supplied for the
field is nil, use VAL instead.
:read-only t Do not create a mutator. Note that t must be specified.
:write-only t Do not create an accessor
:automatic val Do not include field in constructor. Use VAL for
the initial field value.
:filter code Use CODE as a filter for the field value supplied to
the constructor.
Only one of :automatic, :filter or :default may be supplied.
Optional FLAGS are additional modifiers.
If :nil-safe is included, then calling accessors on nil object will
return nil and not signal an error.
If :create-hook HOOK is included, HOOK will be inserted into the
constructor function. When HOOK is evaluated, OBJECT (uppercase) is
bound to the newly created object. It may be modified.
"
(let ((accessors nil)
(mutators nil)
(predicate nil)
(constructor nil)
(access-method 'aref)
(type-sym (intern (upcase (symbol-name type))))
(constructor-body nil)
(create-hook nil))
(while flags
(cond ((eq (car flags) ':nil-safe) (setq access-method 'elt))
((eq (car flags) ':create-hook)
(setq flags (cdr flags))
(setq create-hook (car flags))))
(setq flags (cdr flags)))
;; Create constructor
(setq constructor-body
`(cons ',type-sym
(vector
,@(delq '&optional
(mapcar
(lambda (arg)
(cond ((plist-member (cdr-safe arg) ':automatic)
(plist-get (cdr-safe arg) ':automatic))
((plist-member (cdr-safe arg) ':filter)
(plist-get (cdr-safe arg) ':filter))
((plist-get (cdr-safe arg) ':default)
`(or ,(car arg) ,(plist-get (cdr arg) :default)))
(t (or (car-safe arg) arg))
))
args)))))
(when create-hook
(setq constructor-body
`(let ((OBJECT ,constructor-body))
,create-hook
OBJECT)))
(setq constructor
`(defsubst ,(intern (format "lyskom-create-%S" type))
,(delq nil (mapcar (lambda (arg)
(unless (plist-member (cdr-safe arg) ':automatic)
(or (car-safe arg) arg)))
args))
,(format "Create a `%S' from arguments.
Automatically created with def-komtype." type)
,constructor-body))
;; Create predicate
(setq predicate
`(defsubst ,(intern (format "lyskom-%S-p" type)) (obj)
,(format "Return non-nil if OBJ is a %S
Automatically created with def-komtype" type)
(and (consp obj) (eq (car obj) ',type-sym))))
;; Create accessors and mutators
(let ((field-index 0))
(mapc
(lambda (arg)
(unless (eq arg '&optional)
(let ((field (or (car-safe arg) arg)))
(unless (plist-get (cdr-safe arg) ':write-only)
(setq accessors
(cons `(defsubst ,(intern (format "%S->%S" type field)) (obj)
(lyskom-assert (or (null obj) (,(intern (format "lyskom-%S-p" type)) obj))
"Assertion failed in %s: got %S" ,(format "%S->%S" type field) obj)
,(format "Return field `%s' from OBJ." field)
(,access-method (cdr obj) ,field-index))
accessors)))
(unless (plist-get (cdr-safe arg) ':read-only)
(setq mutators
(cons `(defsubst ,(intern (format "set-%S->%S" type field)) (obj val)
(lyskom-assert (or (null obj) (,(intern (format "lyskom-%S-p" type)) obj))
"Assertion failed in %s: got %S" ,(format "%S->%S" type field) obj)
,(format "Set field `%s' of OBJ to VAL." field)
(aset (cdr obj) ,field-index val))
mutators))))
(setq field-index (1+ field-index))))
args))
;; Return the forms
`(progn ,constructor
,predicate
,@accessors
,@mutators)))
;;; ================================================================
;;; conf-no-list
;;; Constructor:
(def-komtype conf-no-list
((conf-nos :filter (cond ((vectorp conf-nos) (append conf-nos nil))
(t conf-nos))
:read-only t))
:nil-safe)
;;; ================================================================
;;; uconf-stat
(def-komtype uconf-stat
((conf-no :read-only t)
name
(conf-type :read-only t)
(highest-local-no :read-only t)
(nice :read-only t))
:nil-safe)
;;; ================================================================
;;; conf-stat
;;; Constructor:
(def-komtype conf-stat
((conf-no :read-only t)
name
(conf-type :read-only t)
(creation-time :read-only t)
(last-written :read-only t)
(creator :read-only t)
(presentation)
(supervisor :read-only t)
(permitted-submitters :read-only t)
(super-conf :read-only t)
(msg-of-day)
(garb-nice :read-only t)
(keep-commented :read-only t)
(no-of-members :read-only t)
(first-local-no :read-only t)
no-of-texts
&optional
(expire :read-only t :default 0)
(aux-items :read-only t))
:nil-safe)
;;; ================================================================
;;; conf-type.
(def-komtype conf-type
((rd_prot :read-only t)
(original :read-only t)
(secret :read-only t)
(letterbox :read-only t)
&optional
(anarchy :read-only t)
(forbid-secret :read-only t)
(rsv2 :read-only t)
(rsv3 :read-only t))
:nil-safe)
;;;; This field is just simulation of a field in the conf-stat
;;;; that not yet exist.
(defsubst conf-stat->comm-conf (conf-stat)
(if (and (conf-type->original (conf-stat->conf-type conf-stat))
(not (zerop (conf-stat->super-conf conf-stat))))
(conf-stat->super-conf conf-stat)
(conf-stat->conf-no conf-stat)))
;;; ================================================================
;;; Conf-list
(def-komtype conf-list
((conf-nos :read-only t)
(conf-types :read-only t))
:nil-safe)
;;; ================================================================
;;; pers-stat
;;; Constructor:
(def-komtype pers-stat
((pers-no :read-only t)
(username :read-only t)
privileges
(flags :read-only t)
(last-login :read-only t)
user-area
(total-time-present :read-only t)
(sessions :read-only t)
(created-lines :read-only t)
(created-bytes :read-only t)
(read-texts :read-only t)
(no-of-text-fetches :read-only t)
(created-persons :read-only t)
(created-confs :read-only t)
(first-created-text :read-only t)
(no-of-created-texts :read-only t)
(no-of-marks :read-only t)
(no-of-confs :read-only t))
:nil-safe)
;;; ================================================================
;;; text-stat
;;; Constructor:
(def-komtype text-stat
((text-no :read-only t)
(creation-time :read-only t)
(author :read-only t)
(no-of-lines :read-only t)
(no-of-chars :read-only t)
(no-of-marks :read-only t)
(misc-info-list :read-only t)
&optional
(aux-items))
:nil-safe)
;;; ================================================================
;;; aux-item
(def-komtype aux-item-flags
((deleted :read-only t)
inherit
secret
anonymous
dont-garb
(reserved2 :read-only t)
(reserved3 :read-only t)
(reserved4 :read-only t))
:nil-safe)
(def-komtype aux-item
((aux-no :read-only t)
(tag :read-only t)
(creator :read-only t)
(sent-at :read-only t)
(flags :read-only t)
(inherit-limit :read-only t)
data)
:nil-safe)
;;; ================================================================
;;; text
(def-komtype text
((text-no :read-only t)
text-mass)
:nil-safe)
;;; Utilities
(defun text->decoded-text-mass (text text-stat)
"Get the text mass of a text after decoding according to its content type"
(save-match-data
(let* ((str (text->text-mass text))
(item (lyskom-get-aux-item
(text-stat->aux-items text-stat) 1))
(content-type (and (car item)
(lyskom-mime-decode-content-type
(aux-item->data (car item)))))
(charset (lyskom-mime-content-type-get content-type 'charset)))
(condition-case nil
(cond (charset (lyskom-mime-decode-string str charset))
((and (setq charset (lyskom-detect-coding-string str t))
(not (memq charset '(raw-text undecided))))
(lyskom-mime-decode-string str charset))
((setq charset lyskom-server-coding-system)
(lyskom-mime-decode-string str charset))
(t (lyskom-mime-decode-string str 'iso-8859-1)))
(error str)))))
;;; ================================================================
;;; misc-info
(def-komtype misc-info
(type
recipient-no
local-no
rec-time
comm-to
comm-in
footn-to
footn-in
sender
sent-at)
:nil-safe)
(defsubst lyskom-create-empty-misc-info ()
"Create an empty misc-info."
(lyskom-create-misc-info nil nil nil nil nil nil nil nil nil nil))
;;; ================================================================
;;; time
(def-komtype time
((sec :read-only t)
(min :read-only t)
(hour :read-only t)
(mday :read-only t)
(mon :read-only t)
(year :read-only t)
(wday :read-only t)
(yday :read-only t :write-only t)
(isdst :read-only t :write-only t)
&optional
(zone :read-only t))
:nil-safe)
(defun lyskom-create-time-from-utc (sec min hour mday mon year
wday yday isdst &optional zone)
(if lyskom-server-uses-utc
(let* ((date (decode-time (encode-time sec min hour mday mon year 0))))
(unless (eq mday (elt date 3))
(setq yday (if (< (or (car (current-time-zone)) 0) 0)
(- yday 1) (+ yday 1)))
(cond ((< yday 1) (setq yday (lyskom-days-in-year (elt date 5))))
((> yday (lyskom-days-in-year year)) (setq yday 1))))
(lyskom-create-time (elt date 0) ; sec
(elt date 1) ; min
(elt date 2) ; hour
(elt date 3) ; mday
(elt date 4) ; mon
(elt date 5) ; year
(elt date 6) ; dow
yday ; yday
(elt date 7) ; dst
nil)
)
(lyskom-create-time sec min hour mday mon year
wday yday isdst nil)))
;;; ================================================================
;;; privs
(def-komtype privs
((wheel :read-only t)
(admin :read-only t)
(statistic :read-only t)
(create_pers :read-only t)
(create_conf :read-only t)
(change_name :read-only t)
(flg7 :read-only t)
(flg8 :read-only t)
(flg9 :read-only t)
(flg10 :read-only t)
(flg11 :read-only t)
(flg12 :read-only t)
(flg13 :read-only t)
(flg14 :read-only t)
(flg15 :read-only t)
(flg16 :read-only t))
:nil-safe)
;;; ================================================================
;;; flags
(def-komtype session-flags
((invisible :read-only t)
(user_active_used :read-only t)
(user_absent :read-only t)
(reserved3 :read-only t)
(reserved4 :read-only t)
(reserved5 :read-only t)
(reserved6 :read-only t)
(reserved7 :read-only t))
:nil-safe)
(def-komtype dynamic-session-info
((session :read-only t)
(person :read-only t)
(working-conference :read-only t)
(idle-time :read-only t)
(flags :read-only t)
(what-am-i-doing :read-only t))
:nil-safe)
(def-komtype static-session-info
((username :read-only t)
(hostname :read-only t)
(ident-user :read-only t)
(connection-time :read-only t))
:nil-safe)
;;; ================================================================
;;; flags
(def-komtype flags
((unread_is_secret :read-only t)
(flg2 :read-only t)
(flg3 :read-only t)
(flg4 :read-only t)
(flg5 :read-only t)
(flg6 :read-only t)
(flg7 :read-only t)
(flg8 :read-only t))
:nil-safe)
;;; ================================================================
;;; membership
;;; Constructor:
(def-komtype member-list
((members :read-only t))
:nil-safe)
(def-komtype member
((pers-no :read-only t)
(created-by :read-only t)
(created-at :read-only t)
(membership-type :read-only t))
:nil-safe)
;;;
;;; Note that message-flag here is *not* the same as in the
;;; protocol. The value of message-flag is computed from
;;; message-invert in the protocol when received and when
;;; sent.
;;;
(def-komtype membership-type
(invitation
passive
secret
message-flag
(rsv2 :read-only t)
(rsv3 :read-only t)
(rsv4 :read-only t)
(rsv5 :read-only t))
:nil-safe)
(def-komtype membership
(position
(last-time-read)
(conf-no :read-only t)
priority
(last-text-read :read-only t)
read-texts
(created-by :read-only t)
(created-at :read-only t)
(type :read-only t))
:nil-safe)
;;; Special stuff
(defun lyskom-member-list-find-member (person members)
(when members
(lyskom-traverse member (member-list->members members)
(when (eq person (member->pers-no member))
(lyskom-traverse-break member)))))
;;; ================================================================
;;; map
(def-komtype map
((first-local :read-only t)
(text-nos :read-only t))
:nil-safe)
;;; Concat:
(defsubst lyskom-map-concat (&rest maps)
"Take any number of MAPS and return a new map which is the sum of the maps.
Args: &rest MAPS.
The MAPS must be consecutive. No gaps or overlaps are currently allowed."
(if (null maps)
(lyskom-create-map 1 [])
(let* ((first (map->first-local (car maps)))
(high (+ first (length (map->text-nos (car maps)))))
(maplist (list (map->text-nos (car maps))))
(maps (cdr maps)))
(while maps
(if (/= (map->first-local (car maps))
high)
(signal 'lyskom-internal-error '("lyskom-map-concat")))
(setq maplist (nconc maplist (list (map->text-nos (car maps)))))
(setq high (+ high (length (map->text-nos (car maps)))))
(setq maps (cdr maps)))
(lyskom-create-map first (apply 'vconcat maplist)))))
;;; ================================================================
;;; Text-Mapping support
(def-komtype text-mapping
((range-begin :read-only t)
(range-end :read-only t)
(size :read-only t)
(later-texts-exist :read-only t)
(type :read-only t)
(block :read-only nil)))
(defsubst lyskom-create-text-pair (local global) (cons local global))
;;UNUSED: text-pair->local-number
(defsubst text-pair->local-number (pair) (car pair))
;;UNUSED: text-pair->global-number
(defsubst text-pair->global-number (pair) (cdr pair))
(defsubst text-mapping->block-size (map)
(if (eq (text-mapping->type map) 'dense)
(length (map->text-nos (text-mapping->block map)))
(length (text-mapping->block map))))
;;UNUSED: text-mapping->local-to-global
(defun text-mapping->local-to-global (map local)
(cond ((or (< local (text-mapping->range-begin map))
(> local (text-mapping->range-end map))) nil)
((eq (text-mapping->type map) 'sparse)
(cdr (assq local (text-mapping->block map))))
((eq (text-mapping->type map) 'dense)
(let ((result (aref (text-mapping->block map)
(- local (text-mapping->range-begin map)))))
(and (not (zerop result)) result)))))
(defun text-mapping->global-numbers (map)
(cond ((eq (text-mapping->type map) 'sparse)
(mapcar 'cdr (text-mapping->block map)))
((eq (text-mapping->type map) 'dense)
(let ((result nil))
(lyskom-traverse el (map->text-nos (text-mapping->block map))
(unless (zerop el) (setq result (cons el result))))
(nreverse result)))))
(defun text-mapping->global-to-local (map global)
(cond ((eq (text-mapping->type map) 'sparse)
(cdr (rassq global (text-mapping->block map))))
((eq (text-mapping->type map) 'dense)
(let ((i (text-mapping->range-begin map))
(result nil))
(while (< i (text-mapping->range-end map))
(if (eq (aref (map->text-nos (text-mapping->block map))
(- i (text-mapping->range-begin map)))
global)
(setq result i i (text-mapping->range-end map))
(setq i (1+ i))))
result))))
(defun text-mapping->remove-local (map local)
(cond ((eq (text-mapping->type map) 'dense)
(setq local (- local (text-mapping->range-begin map)))
(when (and (>= local 0)
(< local (text-mapping->block-size map)))
(aset (map->text-nos (text-mapping->block map)) local 0)))
((eq (text-mapping->type map) 'sparse)
(let ((el (assq local (text-mapping->block map))))
(when el
(set-text-mapping->block map
(delq el (text-mapping->block map))))))))
(def-komtype text-mapping-iterator
((map :read-only t)
(next-value :automatic nil)
(state :automatic nil))
:create-hook (text-mapping-iterator->init OBJECT))
(defun text-mapping->iterator (map)
(lyskom-create-text-mapping-iterator map))
(defun text-mapping-iterator->init (iter)
(if (eq (text-mapping->type (text-mapping-iterator->map iter)) 'dense)
(set-text-mapping-iterator->state iter 0)
(set-text-mapping-iterator->state
iter (text-mapping->block (text-mapping-iterator->map iter)))))
(defun text-mapping-iterator->next (iter)
(when (text-mapping-iterator->state iter)
(let ((map (text-mapping-iterator->map iter)))
(prog1
(if (eq (text-mapping->type map) 'dense)
(lyskom-create-text-pair (+ (text-mapping-iterator->state iter)
(text-mapping->range-begin map))
(aref (map->text-nos (text-mapping->block map))
(text-mapping-iterator->state iter)))
(car (text-mapping-iterator->state iter)))
(text-mapping-iterator->step iter)))))
(defun text-mapping-iterator->step (iter)
(let ((map (text-mapping-iterator->map iter))
(state (text-mapping-iterator->state iter)))
(cond
((eq (text-mapping->type map) 'dense)
(setq state (1+ state))
(while (and (< state (text-mapping->block-size map))
(eq 0 (aref (map->text-nos (text-mapping->block map)) state)))
(setq state (1+ state)))
(set-text-mapping-iterator->state
iter (and (< state (text-mapping->block-size map)) state)))
((eq (text-mapping->type map) 'sparse)
(set-text-mapping-iterator->state iter (cdr state))))))
;;; ================================================================
;;; mark
(def-komtype mark
((text-no :read-only t)
(mark-type :read-only t))
:nil-safe)
;;; Utilities
(defun mark->symbolic-mark-type (mark)
(lyskom-symbolic-mark-type-string (mark->mark-type mark)))
;;; ================================================================
;;; who-info
(def-komtype who-info
((pers-no :read-only t)
(working-conf :read-only t)
(connection :read-only t)
(doing-what :read-only t)
(username :read-only t)
&optional
(hostname :read-only t)
(ident-user :read-only t))
:nil-safe)
;;; ================================================================
;;; session-info
(def-komtype session-info
((pers-no :read-only t)
(working-conf :read-only t)
(connection :read-only t)
(doing :read-only t)
(username :read-only t)
(hostname :read-only t)
(ident-user :read-only t)
(idletime :read-only t)
(connect-time :read-only t))
:nil-safe)
;;; ================================================================
;;; text-list
;;; Constructor:
(def-komtype text-list
(texts-internal
(tail :automatic (last texts-internal))
(length-internal :automatic (length texts-internal)))
:nil-safe)
(defsubst text-list->texts (text-list)
(text-list->texts-internal text-list))
(defsubst set-text-list->texts (text-list texts)
(set-text-list->texts-internal text-list texts)
(set-text-list->tail text-list (last texts))
(set-text-list->length-internal text-list (length texts)))
(defsubst text-list->empty (text-list)
"Return t if TEXT-LIST is empty."
(null (text-list->texts text-list)))
(defsubst text-list->length (text-list)
"Return the length of TEXT-LIST."
(unless (text-list->length-internal text-list)
(set-text-list->length-internal text-list
(length (text-list->texts text-list))))
(text-list->length-internal text-list))
(defsubst text-list->memq (text-list no)
"Return non-nil if TEXT-LIST contains TEXT-NO."
(memq no (text-list->texts text-list)))
(defsubst text-list->delq (text-list no)
"Remove text NO from TEXT-LIST."
(set-text-list->texts-internal text-list (delq no (text-list->texts text-list)))
(when (eq no (car (text-list->tail text-list)))
(set-text-list->tail text-list (last (text-list->texts text-list))))
(set-text-list->length-internal text-list nil))
;;; FIXME: It would be useful if text-list->append would only append
;;; FIXME: unique numbers and not blindnly concatenate the two lists.
;;; FIXME: That would probably take care of any remaining problems
;;; FIXME: where some texts are listed twice in the to do list.
(defsubst text-list->append (text-list texts)
"Destructively append TEXTS to the end of TEXT-LIST."
(if (text-list->texts text-list)
(progn
(nconc (or (text-list->tail text-list)
(text-list->texts-internal text-list))
texts)
(when (text-list->length-internal text-list)
(set-text-list->length-internal
text-list
(+ (text-list->length-internal text-list)
(length texts)))))
(set-text-list->texts-internal text-list texts)
(set-text-list->length-internal text-list nil))
(set-text-list->tail text-list (last texts)))
(defun text-list->trim-head (tlist n)
"Destructively remove all but the N last elements from TLIST.
Do nothing if the TLIST is less than N elements long."
(set-text-list->texts-internal tlist (nthcdr (max (- (text-list->length tlist) n) 0)
(text-list->texts tlist)))
(when (text-list->length-internal tlist)
(set-text-list->length-internal tlist n))
(unless (text-list->texts tlist)
(set-text-list->length-internal tlist 0)
(set-text-list->tail tlist nil)))
;;; ================================================================
;;; version-info
;;; Constructor:
(def-komtype version-info
((protocol-version :read-only t)
(server-software :read-only t)
(software-version :read-only t))
:nil-safe)
;;; ================================================================
;;; server-info
(def-komtype server-info
((version :read-only t)
(conf-pres-conf :read-only t)
(pers-pres-conf :read-only t)
(motd-conf :read-only t)
(kom-news-conf :read-only t)
motd-of-lyskom
&optional
(aux-item-list :read-only t))
:nil-safe)
;;; ================================================================
;;; conf-z-info-list
(def-komtype conf-z-info-list
((conf-z-infos :read-only t))
:nil-safe)
;;; ================================================================
;;; conf-z-info
;;; Constructor:
(def-komtype conf-z-info
((name :read-only t)
(conf-type :read-only t)
(conf-no :read-only t))
:nil-safe)
(def-komtype stats-description
((what :read-only t)
(when :read-only t))
:nil-safe)
(def-komtype stats
((average :read-only t)
(ascent-rate :read-only t)
(descent-rate :read-only t))
:nil-safe)
(def-komtype server-stats
(&optional
(what :default nil)
(when :default nil)
(values :default nil))
:nil-safe)
(def-komtype static-server-info
((boot-time :read-only t)
(save-time :read-only t)
(db-status :read-only t)
(existing-texts :read-only t)
(highest-text-no :read-only t)
(existing-confs :read-only t)
(existing-persons :read-only t)
(highest-conf-no :read-only t))
:nil-safe)
(def-komtype scheduling-info
((priority :read-only t)
(weight :read-only t))
:nil-safe)
;;; ================================================================
;;; Utilities
(defun text-stat-find-aux (text-stat tag &optional person)
"Return a list containing the aux items in TEXT-STAT with tag TAG.
If PERSON is non-nil return only those items created by person.
Args: TEXT-STAT TAG PERSON"
(let ((result nil)
(items (text-stat->aux-items text-stat)))
(while items
(when (and (eq tag (aux-item->tag (car items)))
(not (aux-item-flags->deleted
(aux-item->flags (car items))))
(or (null person)
(eq person (aux-item->creator (car items)))))
(setq result (cons (car items) result)))
(setq items (cdr items)))
(nreverse result)))
(defun conf-stat-find-aux (conf-stat tag &optional person)
"Return a list containing the aux items in CONF-STAT with tag TAG.
If PERSON is non-nil return only those items created by person.
Args: CONF-STAT TAG PERSON"
(let ((result nil)
(items (conf-stat->aux-items conf-stat)))
(while items
(when (and (eq tag (aux-item->tag (car items)))
(not (aux-item-flags->deleted
(aux-item->flags (car items))))
(or (null person)
(eq person (aux-item->creator (car items)))))
(setq result (cons (car items) result)))
(setq items (cdr items)))
(nreverse result)))
(defun lyskom-is-recipient (text-stat conf-no)
"Return non-nil if TEXT-STAT has CONF-NO as a recipient."
(let ((result nil))
(lyskom-traverse misc
(text-stat->misc-info-list text-stat)
(when (and (memq (misc-info->type misc) lyskom-recpt-types-list)
(eq (misc-info->recipient-no misc) conf-no))
(setq result t)))
result))
(provide 'lyskom-types)
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