From: F. Jason Park Date: Thu, 7 Sep 2023 02:40:11 +0000 (-0700) Subject: Spoof channel users in erc-button--phantom-users-mode X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=a0ed463babaa6301dfe2fecc27e2a6c92eb0d90c;p=emacs.git Spoof channel users in erc-button--phantom-users-mode * lisp/erc/erc-backend.el (erc--cmem-from-nick-function): Update forward declaration. (erc-server-PRIVMSG): Use new name for `erc--user-from-nick-function', now `erc--cmem-from-nick-function'. * lisp/erc/erc-button.el (erc-button--phantom-users, erc-button--phantom-cmems): Rename former to latter. (erc-button--fallback-user-function, erc-button--fallback-cmem-function): Rename former to latter. (erc--phantom-channel-user, erc--phantom-server-user): New superficial `cl-struct' definitions "subclassing" `erc-channel-user' and `erc-server-user'. Note that these symbols lack an `erc-button' prefix. (erc-button--add-phantom-speaker): Look for channel member instead of server user, creating one if necessary. Return a made-up `erc-channel-user' along with a fake `erc-server-user'. (erc-button--get-phantom-user, erc-button--get-phantom-cmem): Rename former to latter. (erc-button--phantom-users-mode, erc-button--phantom-users-enable, erc-button--phantom-users-disable): Use updated "cmem" names for function-valued interface variables and their implementing functions. Remove obsolete comment. (erc-button-add-nickname-buttons): Attempt to query fallback function for channel member instead of server user. * lisp/erc/erc.el (erc--user-from-nick-function, erc--cmem-from-nick-function): Rename former to latter. (erc--examine-nick, erc--cmem-get-existing): Rename former to latter. (Bug#60933) --- diff --git a/lisp/erc/erc-backend.el b/lisp/erc/erc-backend.el index 9e121ec1e92..fb10ee31c78 100644 --- a/lisp/erc/erc-backend.el +++ b/lisp/erc/erc-backend.el @@ -104,7 +104,7 @@ (defvar erc--called-as-input-p) (defvar erc--display-context) (defvar erc--target) -(defvar erc--user-from-nick-function) +(defvar erc--cmem-from-nick-function) (defvar erc-channel-list) (defvar erc-channel-users) (defvar erc-default-nicks) @@ -1944,7 +1944,7 @@ add things to `%s' instead." ;; at this point. (erc-update-channel-member (if privp nick tgt) nick nick privp nil nil nil nil nil host login nil nil t) - (let ((cdata (funcall erc--user-from-nick-function + (let ((cdata (funcall erc--cmem-from-nick-function (erc-downcase nick) sndr parsed))) (setq fnick (funcall erc-format-nick-function (car cdata) (cdr cdata)))))) diff --git a/lisp/erc/erc-button.el b/lisp/erc/erc-button.el index 8c1188e64a2..596f896d9c5 100644 --- a/lisp/erc/erc-button.el +++ b/lisp/erc/erc-button.el @@ -380,32 +380,37 @@ buttonizing ought to proceed and nil otherwise. While running, all faces defined in `erc-button' are bound temporarily and can be updated at will.") -(defvar-local erc-button--phantom-users nil) +(defvar-local erc-button--phantom-cmems nil) -(defvar erc-button--fallback-user-function #'ignore - "Function to determine `erc-server-user' if not found in the usual places. +(defvar erc-button--fallback-cmem-function #'ignore + "Function to determine channel member if not found in the usual places. Called with DOWNCASED-NICK, NICK, and NICK-BOUNDS when `erc-button-add-nickname-buttons' cannot find a user object for DOWNCASED-NICK in `erc-channel-users' or `erc-server-users'.") +;; Historical or fictitious users. As long as these two structs +;; remain superficial "subclasses" with the same slots and defaults, +;; they can live here instead of in erc-common.el. +(cl-defstruct (erc--phantom-channel-user (:include erc-channel-user))) +(cl-defstruct (erc--phantom-server-user (:include erc-server-user))) + (defun erc-button--add-phantom-speaker (downcased nuh _parsed) - "Stash fictitious `erc-server-user' while processing \"PRIVMSG\". -Expect DOWNCASED to be the downcased nickname, NUH to be a triple -of (NICK LOGIN HOST), and parsed to be an `erc-response' object." (pcase-let* ((`(,nick ,login ,host) nuh) - (user (or (gethash downcased erc-button--phantom-users) - (make-erc-server-user + (cmem (gethash downcased erc-button--phantom-cmems)) + (user (or (car cmem) + (make-erc--phantom-server-user :nickname nick :host (and (not (string-empty-p host)) host) - :login (and (not (string-empty-p login)) login))))) - (list (puthash downcased user erc-button--phantom-users)))) + :login (and (not (string-empty-p login)) login)))) + (cuser (or (cdr cmem) + (make-erc--phantom-channel-user + :last-message-time (current-time))))) + (puthash downcased (cons user cuser) erc-button--phantom-cmems) + (cons user cuser))) -(defun erc-button--get-phantom-user (down _word _bounds) - (gethash down erc-button--phantom-users)) +(defun erc-button--get-phantom-cmem (down _word _bounds) + (gethash down erc-button--phantom-cmems)) -;; In the future, we'll most likely create temporary -;; `erc-channel-users' tables during BATCH chathistory playback, thus -;; obviating the need for this mode entirely. (define-minor-mode erc-button--phantom-users-mode "Minor mode to recognize unknown speakers. Expect to be used by module setup code for creating placeholder @@ -415,22 +420,22 @@ appeared in a prior \"353\" message and are thus a known member of the channel. However, don't bother creating an actual `erc-channel-user' object because their status prefix is unknown. Instead, just spoof an `erc-server-user' and stash it during -\"PRIVMSG\" handling via `erc--user-from-nick-function' and +\"PRIVMSG\" handling via `erc--cmem-from-nick-function' and retrieve it during buttonizing via `erc-button--fallback-user-function'." :interactive nil (if erc-button--phantom-users-mode (progn - (add-function :after-until (local 'erc--user-from-nick-function) - #'erc-button--add-phantom-speaker '((depth . -50))) - (add-function :after-until (local 'erc-button--fallback-user-function) - #'erc-button--get-phantom-user '((depth . 50))) - (setq erc-button--phantom-users (make-hash-table :test #'equal))) - (remove-function (local 'erc--user-from-nick-function) + (add-function :after-until (local 'erc--cmem-from-nick-function) + #'erc-button--add-phantom-speaker '((depth . 30))) + (add-function :after-until (local 'erc-button--fallback-cmem-function) + #'erc-button--get-phantom-cmem '((depth . 50))) + (setq erc-button--phantom-cmems (make-hash-table :test #'equal))) + (remove-function (local 'erc--cmem-from-nick-function) #'erc-button--add-phantom-speaker) - (remove-function (local 'erc-button--fallback-user-function) - #'erc-button--get-phantom-user) - (kill-local-variable 'erc-nicks--phantom-users))) + (remove-function (local 'erc-button--fallback-cmem-function) + #'erc-button--get-phantom-cmem) + (kill-local-variable 'erc-button--phantom-cmems))) (defun erc-button-add-nickname-buttons (entry) "Search through the buffer for nicknames, and add buttons." @@ -451,11 +456,12 @@ retrieve it during buttonizing via (down (erc-downcase word))) (let* ((erc-button-mouse-face erc-button-mouse-face) (erc-button-nickname-face erc-button-nickname-face) - (cuser (and erc-channel-users (gethash down erc-channel-users))) + (cuser (and erc-channel-users + (or (gethash down erc-channel-users) + (funcall erc-button--fallback-cmem-function + down word bounds)))) (user (or (and cuser (car cuser)) - (and erc-server-users (gethash down erc-server-users)) - (funcall erc-button--fallback-user-function - down word bounds))) + (and erc-server-users (gethash down erc-server-users)))) (data (list word))) (when (or (not (functionp form)) (and-let* ((user) diff --git a/lisp/erc/erc.el b/lisp/erc/erc.el index 07ba32d1cca..ec4fae548c7 100644 --- a/lisp/erc/erc.el +++ b/lisp/erc/erc.el @@ -5262,14 +5262,15 @@ Assume buffer is narrowed to the confines of an inserted message." (next-single-property-change (point-min) 'erc-speaker)))) (cons beg (next-single-property-change beg 'erc-speaker))))) -(defvar erc--user-from-nick-function #'erc--examine-nick - "Function to possibly consider unknown user. -Must return either nil or a cons of an `erc-server-user' and a -possibly nil `erc-channel-user' for formatting a server user's -nick. Called in the appropriate buffer with the downcased nick, -the parsed NUH, and the original `erc-response' object.") - -(defun erc--examine-nick (downcased _nuh _parsed) +(defvar erc--cmem-from-nick-function #'erc--cmem-get-existing + "Function maybe returning a \"channel member\" cons from a nick. +Must return either nil or a cons of an `erc-server-user' and an +`erc-channel-user' (see `erc-channel-users') for use in +formatting a user's nick prior to insertion. Called in the +appropriate target buffer with the downcased nick, the parsed +NUH, and the current `erc-response' object.") + +(defun erc--cmem-get-existing (downcased _nuh _parsed) (and erc-channel-users (gethash downcased erc-channel-users))) (defun erc-format-privmessage (nick msg privp msgp)