mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-27 07:37:33 +00:00
41ba8231ef
* lisp/auth-source.el (auth-source-backend-parse-parameters) (auth-source-search-collection) (auth-source-secrets-listify-pattern) (auth-source--decode-octal-string, auth-source-plstore-search): * lisp/registry.el (registry-lookup) (registry-lookup-breaks-before-lexbind) (registry-lookup-secondary, registry-lookup-secondary-value) (registry-search, registry-delete, registry-size, registry-full) (registry-insert, registry-reindex, registry-prune) (registry-collect-prune-candidates): * lisp/subr.el (nbutlast, process-live-p): * lisp/tab-bar.el (tab-bar-list): * lisp/cedet/ede/linux.el (ede-linux--get-archs) (ede-linux--include-path, ede-linux-load): * lisp/erc/erc-log.el (erc-log-all-but-server-buffers): * lisp/erc/erc-pcomplete.el (pcomplete-erc-commands) (pcomplete-erc-ops, pcomplete-erc-not-ops, pcomplete-erc-nicks) (pcomplete-erc-all-nicks, pcomplete-erc-channels) (pcomplete-erc-command-name, pcomplete-erc-parse-arguments): * lisp/eshell/em-term.el (eshell-visual-command-p): * lisp/gnus/gnus-cache.el (gnus-cache-fully-p): * lisp/gnus/nnmail.el (nnmail-get-active) (nnmail-fancy-expiry-target): * lisp/mail/mail-utils.el (mail-string-delete): * lisp/mail/supercite.el (sc-hdr, sc-valid-index-p): * lisp/net/ange-ftp.el (ange-ftp-use-smart-gateway-p): * lisp/net/nsm.el (nsm-save-fingerprint-maybe) (nsm-network-same-subnet, nsm-should-check): * lisp/net/rcirc.el (rcirc-looking-at-input): * lisp/net/tramp-cache.el (tramp-get-hash-table): * lisp/net/tramp-compat.el (tramp-compat-process-running-p): * lisp/net/tramp-smb.el (tramp-smb-get-share) (tramp-smb-get-localname, tramp-smb-read-file-entry) (tramp-smb-get-cifs-capabilities, tramp-smb-get-stat-capability): * lisp/net/zeroconf.el (zeroconf-list-service-names) (zeroconf-list-service-types, zeroconf-list-services) (zeroconf-get-host, zeroconf-get-domain) (zeroconf-get-host-domain): * lisp/nxml/rng-xsd.el (rng-xsd-compile) (rng-xsd-make-date-time-regexp, rng-xsd-convert-date-time): * lisp/obsolete/erc-hecomplete.el (erc-hecomplete) (erc-command-list, erc-complete-at-prompt): * lisp/org/ob-scheme.el (org-babel-scheme-get-buffer-impl): * lisp/org/ob-shell.el (org-babel--variable-assignments:sh-generic) (org-babel--variable-assignments:bash_array) (org-babel--variable-assignments:bash_assoc) (org-babel--variable-assignments:bash): * lisp/org/org-clock.el (org-day-of-week): * lisp/progmodes/cperl-mode.el (cperl-char-ends-sub-keyword-p): * lisp/progmodes/gud.el (gud-find-c-expr, gud-innermost-expr) (gud-prev-expr, gud-next-expr): * lisp/textmodes/table.el (table--at-cell-p, table--probe-cell) (table--get-cell-justify-property) (table--get-cell-valign-property) (table--put-cell-justify-property) (table--put-cell-valign-property): Fix typos. * lisp/so-long.el (fboundp): Doc fix. (so-long-mode-line-info, so-long-mode) (so-long--check-header-modes): Fix typos. * lisp/emulation/viper-mous.el (viper-surrounding-word) (viper-mouse-click-get-word): Fix typos. (viper-mouse-click-search-word): Doc fix. * lisp/erc/erc-backend.el (erc-forward-word, erc-word-at-arg-p) (erc-bounds-of-word-at-point): Fix typos. (erc-decode-string-from-target, define-erc-response-handler): Refill docstring. * lisp/erc/erc-dcc.el (pcomplete/erc-mode/DCC): Fix typo. (erc-dcc-get-host, erc-dcc-auto-mask-p, erc-dcc-get-file): Doc fixes. * lisp/erc/erc-networks.el (erc-network-name): Fix typo. (erc-determine-network): Refill docstring. * lisp/net/dbus.el (dbus-list-hash-table) (dbus-string-to-byte-array, dbus-byte-array-to-string) (dbus-check-event): Fix typos. (dbus-introspect-get-property): Doc fix. * lisp/net/tramp-adb.el (tramp-adb-file-name-handler): Rename ARGS to ARGUMENTS. Doc fix. (tramp-adb-sh-fix-ls-output, tramp-adb-execute-adb-command) (tramp-adb-find-test-command): Fix typos. * lisp/net/tramp.el (tramp-set-completion-function) (tramp-get-completion-function) (tramp-completion-dissect-file-name) (tramp-completion-dissect-file-name1) (tramp-get-completion-methods, tramp-get-completion-user-host) (tramp-get-inode, tramp-get-device, tramp-mode-string-to-int) (tramp-call-process, tramp-call-process-region) (tramp-process-lines): Fix typos. (tramp-interrupt-process): Doc fix. * lisp/org/ob-core.el (org-babel-named-src-block-regexp-for-name) (org-babel-named-data-regexp-for-name): Doc fix. (org-babel-src-block-names, org-babel-result-names): Fix typos. * lisp/progmodes/inf-lisp.el (lisp-input-filter): Doc fix. (lisp-fn-called-at-pt): Fix typo. * lisp/progmodes/xref.el (xref-backend-identifier-at-point): Doc fix. (xref-backend-identifier-completion-table): Fix typo.
880 lines
31 KiB
EmacsLisp
880 lines
31 KiB
EmacsLisp
;;; gnus-cache.el --- cache interface for Gnus
|
||
|
||
;; Copyright (C) 1995-2019 Free Software Foundation, Inc.
|
||
|
||
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
|
||
;; Keywords: news
|
||
|
||
;; 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 3 of the License, 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. If not, see <https://www.gnu.org/licenses/>.
|
||
|
||
;;; Commentary:
|
||
|
||
;;; Code:
|
||
|
||
(eval-when-compile (require 'cl-lib))
|
||
|
||
(require 'gnus)
|
||
(require 'gnus-sum)
|
||
|
||
(eval-when-compile
|
||
(unless (fboundp 'gnus-agent-load-alist)
|
||
(defun gnus-agent-load-alist (group))))
|
||
|
||
(defcustom gnus-cache-active-file
|
||
(expand-file-name "active" gnus-cache-directory)
|
||
"The cache active file."
|
||
:group 'gnus-cache
|
||
:type 'file)
|
||
|
||
(defcustom gnus-cache-enter-articles '(ticked dormant)
|
||
"Classes of articles to enter into the cache."
|
||
:group 'gnus-cache
|
||
:type '(set (const ticked) (const dormant) (const unread) (const read)))
|
||
|
||
(defcustom gnus-cache-remove-articles '(read)
|
||
"Classes of articles to remove from the cache."
|
||
:group 'gnus-cache
|
||
:type '(set (const ticked) (const dormant) (const unread) (const read)))
|
||
|
||
(defcustom gnus-cacheable-groups nil
|
||
"Groups that match this regexp will be cached.
|
||
|
||
If you only want to cache your nntp groups, you could set this
|
||
variable to \"^nntp\".
|
||
|
||
If a group matches both gnus-cacheable-groups and gnus-uncacheable-groups
|
||
it's not cached."
|
||
:group 'gnus-cache
|
||
:type '(choice (const :tag "off" nil)
|
||
regexp))
|
||
|
||
(defcustom gnus-uncacheable-groups nil
|
||
"Groups that match this regexp will not be cached.
|
||
|
||
If you want to avoid caching your nnml groups, you could set this
|
||
variable to \"^nnml\".
|
||
|
||
If a group matches both gnus-cacheable-groups and gnus-uncacheable-groups
|
||
it's not cached."
|
||
:group 'gnus-cache
|
||
:type '(choice (const :tag "off" nil)
|
||
regexp))
|
||
|
||
(defvar gnus-cache-overview-coding-system 'raw-text
|
||
"Coding system used on Gnus cache files.")
|
||
|
||
(defvar gnus-cache-coding-system 'raw-text
|
||
"Coding system used on Gnus cache files.")
|
||
|
||
|
||
|
||
;;; Internal variables.
|
||
|
||
(defvar gnus-cache-removable-articles nil)
|
||
(defvar gnus-cache-buffer nil)
|
||
(defvar gnus-cache-active-hashtb nil)
|
||
(defvar gnus-cache-active-altered nil)
|
||
(defvar gnus-cache-total-fetched-hashtb nil)
|
||
|
||
(declare-function nnvirtual-find-group-art "nnvirtual" (group article))
|
||
|
||
(autoload 'nnml-generate-nov-databases-directory "nnml")
|
||
(autoload 'nnvirtual-find-group-art "nnvirtual")
|
||
|
||
|
||
|
||
;;; Functions called from Gnus.
|
||
|
||
(defun gnus-cache-open ()
|
||
"Initialize the cache."
|
||
(when (or (file-exists-p gnus-cache-directory)
|
||
(and gnus-use-cache
|
||
(not (eq gnus-use-cache 'passive))))
|
||
(gnus-cache-read-active)))
|
||
|
||
;; Complexities of byte-compiling make this kludge necessary. Eeek.
|
||
(ignore-errors
|
||
(gnus-add-shutdown 'gnus-cache-close 'gnus))
|
||
|
||
(defun gnus-cache-close ()
|
||
"Shut down the cache."
|
||
(gnus-cache-write-active)
|
||
(gnus-cache-save-buffers)
|
||
(setq gnus-cache-active-hashtb nil))
|
||
|
||
(defun gnus-cache-save-buffers ()
|
||
;; save the overview buffer if it exists and has been modified
|
||
;; delete empty cache subdirectories
|
||
(when gnus-cache-buffer
|
||
(let ((buffer (cdr gnus-cache-buffer))
|
||
(overview-file (gnus-cache-file-name
|
||
(car gnus-cache-buffer) ".overview")))
|
||
;; write the overview only if it was modified
|
||
(when (and (buffer-live-p buffer) (buffer-modified-p buffer))
|
||
(with-current-buffer buffer
|
||
(if (> (buffer-size) 0)
|
||
;; Non-empty overview, write it to a file.
|
||
(let ((coding-system-for-write
|
||
gnus-cache-overview-coding-system))
|
||
(gnus-write-buffer overview-file))
|
||
(let ((file-name-coding-system nnmail-pathname-coding-system))
|
||
;; Empty overview file, remove it
|
||
(when (file-exists-p overview-file)
|
||
(delete-file overview-file))
|
||
;; If possible, remove group's cache subdirectory.
|
||
(condition-case nil
|
||
;; FIXME: we can detect the error type and warn the user
|
||
;; of any inconsistencies (articles w/o nov entries?).
|
||
;; for now, just be conservative...delete only if safe -- sj
|
||
(delete-directory (file-name-directory overview-file))
|
||
(error))))
|
||
|
||
(gnus-cache-update-overview-total-fetched-for
|
||
(car gnus-cache-buffer) overview-file)))
|
||
;; Kill the buffer -- it's either unmodified or saved.
|
||
(gnus-kill-buffer buffer)
|
||
(setq gnus-cache-buffer nil))))
|
||
|
||
(defun gnus-cache-possibly-enter-article
|
||
(group article ticked dormant unread &optional force)
|
||
(when (and (or force (not (eq gnus-use-cache 'passive)))
|
||
(numberp article)
|
||
(> article 0)) ; This might be a dummy article.
|
||
(let ((number article)
|
||
file headers lines-chars
|
||
(file-name-coding-system nnmail-pathname-coding-system))
|
||
;; If this is a virtual group, we find the real group.
|
||
(when (gnus-virtual-group-p group)
|
||
(let ((result (nnvirtual-find-group-art
|
||
(gnus-group-real-name group) article)))
|
||
(setq group (car result)
|
||
number (cdr result))))
|
||
(when (and number
|
||
(> number 0) ; Reffed article.
|
||
(or force
|
||
(and (gnus-cache-fully-p group)
|
||
(gnus-cache-member-of-class
|
||
gnus-cache-enter-articles ticked dormant unread)))
|
||
(not (file-exists-p (setq file (gnus-cache-file-name
|
||
group number)))))
|
||
;; Possibly create the cache directory.
|
||
(gnus-make-directory (file-name-directory file))
|
||
;; Save the article in the cache.
|
||
(if (file-exists-p file)
|
||
t ; The article already is saved.
|
||
(with-current-buffer nntp-server-buffer
|
||
(require 'gnus-art)
|
||
(let ((gnus-use-cache nil)
|
||
(gnus-article-decode-hook nil))
|
||
(gnus-request-article-this-buffer number group))
|
||
(when (> (buffer-size) 0)
|
||
(let ((coding-system-for-write gnus-cache-coding-system))
|
||
(gnus-write-buffer file)
|
||
(gnus-cache-update-file-total-fetched-for group file))
|
||
(setq lines-chars (nnheader-get-lines-and-char))
|
||
(nnheader-remove-body)
|
||
(setq headers (nnheader-parse-naked-head))
|
||
(setf (mail-header-number headers) number)
|
||
(setf (mail-header-lines headers) (car lines-chars))
|
||
(setf (mail-header-chars headers) (cadr lines-chars))
|
||
(gnus-cache-change-buffer group)
|
||
(set-buffer (cdr gnus-cache-buffer))
|
||
(goto-char (point-max))
|
||
(forward-line -1)
|
||
(while (condition-case ()
|
||
(when (not (bobp))
|
||
(> (read (current-buffer)) number))
|
||
(error
|
||
;; The line was malformed, so we just remove it!!
|
||
(gnus-delete-line)
|
||
t))
|
||
(forward-line -1))
|
||
(if (bobp)
|
||
(if (not (eobp))
|
||
(progn
|
||
(beginning-of-line)
|
||
(when (< (read (current-buffer)) number)
|
||
(forward-line 1)))
|
||
(beginning-of-line))
|
||
(forward-line 1))
|
||
(beginning-of-line)
|
||
(nnheader-insert-nov headers)
|
||
;; Update the active info.
|
||
(set-buffer gnus-summary-buffer)
|
||
(gnus-cache-possibly-update-active group (cons number number))
|
||
(setq gnus-newsgroup-cached
|
||
(gnus-add-to-sorted-list gnus-newsgroup-cached article))
|
||
(gnus-summary-update-secondary-mark article))
|
||
t))))))
|
||
|
||
(defun gnus-cache-enter-remove-article (article)
|
||
"Mark ARTICLE for later possible removal."
|
||
(when article
|
||
(push article gnus-cache-removable-articles)))
|
||
|
||
(defun gnus-cache-possibly-remove-articles ()
|
||
"Possibly remove some of the removable articles."
|
||
(if (not (gnus-virtual-group-p gnus-newsgroup-name))
|
||
(gnus-cache-possibly-remove-articles-1)
|
||
(let ((arts gnus-cache-removable-articles)
|
||
ga)
|
||
(while arts
|
||
(when (setq ga (nnvirtual-find-group-art
|
||
(gnus-group-real-name gnus-newsgroup-name) (pop arts)))
|
||
(let ((gnus-cache-removable-articles (list (cdr ga)))
|
||
(gnus-newsgroup-name (car ga)))
|
||
(gnus-cache-possibly-remove-articles-1)))))
|
||
(setq gnus-cache-removable-articles nil)))
|
||
|
||
(defun gnus-cache-possibly-remove-articles-1 ()
|
||
"Possibly remove some of the removable articles."
|
||
(when (gnus-cache-fully-p gnus-newsgroup-name)
|
||
(let ((cache-articles gnus-newsgroup-cached))
|
||
(gnus-cache-change-buffer gnus-newsgroup-name)
|
||
(dolist (article gnus-cache-removable-articles)
|
||
(when (memq article cache-articles)
|
||
;; The article was in the cache, so we see whether we are
|
||
;; supposed to remove it from the cache.
|
||
(gnus-cache-possibly-remove-article
|
||
article (memq article gnus-newsgroup-marked)
|
||
(memq article gnus-newsgroup-dormant)
|
||
(or (memq article gnus-newsgroup-unreads)
|
||
(memq article gnus-newsgroup-unselected))))))
|
||
;; The overview file might have been modified, save it
|
||
;; safe because we're only called at group exit anyway.
|
||
(gnus-cache-save-buffers)))
|
||
|
||
(defun gnus-cache-request-article (article group)
|
||
"Retrieve ARTICLE in GROUP from the cache."
|
||
(let ((file (gnus-cache-file-name group article))
|
||
(buffer-read-only nil)
|
||
(file-name-coding-system nnmail-pathname-coding-system))
|
||
(when (file-exists-p file)
|
||
(erase-buffer)
|
||
(gnus-kill-all-overlays)
|
||
(let ((coding-system-for-read gnus-cache-coding-system))
|
||
(insert-file-contents file))
|
||
t)))
|
||
|
||
(defun gnus-cache-possibly-alter-active (group active)
|
||
"Alter the ACTIVE info for GROUP to reflect the articles in the cache."
|
||
(when gnus-cache-active-hashtb
|
||
(let ((cache-active (gethash group gnus-cache-active-hashtb)))
|
||
(when cache-active
|
||
(when (< (car cache-active) (car active))
|
||
(setcar active (car cache-active)))
|
||
(when (> (cdr cache-active) (cdr active))
|
||
(setcdr active (cdr cache-active)))))))
|
||
|
||
(defun gnus-cache-retrieve-headers (articles group &optional fetch-old)
|
||
"Retrieve the headers for ARTICLES in GROUP."
|
||
(let ((cached
|
||
(setq gnus-newsgroup-cached (gnus-cache-articles-in-group group))))
|
||
(if (not cached)
|
||
;; No cached articles here, so we just retrieve them
|
||
;; the normal way.
|
||
(let ((gnus-use-cache nil))
|
||
(gnus-retrieve-headers articles group fetch-old))
|
||
(let ((uncached-articles (gnus-sorted-difference articles cached))
|
||
(cache-file (gnus-cache-file-name group ".overview"))
|
||
type
|
||
(file-name-coding-system nnmail-pathname-coding-system))
|
||
;; We first retrieve all the headers that we don't have in
|
||
;; the cache.
|
||
(let ((gnus-use-cache nil))
|
||
(when uncached-articles
|
||
(setq type (and articles
|
||
(gnus-retrieve-headers
|
||
uncached-articles group fetch-old)))))
|
||
(gnus-cache-save-buffers)
|
||
;; Then we insert the cached headers.
|
||
(save-excursion
|
||
(cond
|
||
((not (file-exists-p cache-file))
|
||
;; There are no cached headers.
|
||
type)
|
||
((null type)
|
||
;; There were no uncached headers (or retrieval was
|
||
;; unsuccessful), so we use the cached headers exclusively.
|
||
(set-buffer nntp-server-buffer)
|
||
(erase-buffer)
|
||
(let ((coding-system-for-read
|
||
gnus-cache-overview-coding-system))
|
||
(insert-file-contents cache-file))
|
||
'nov)
|
||
((eq type 'nov)
|
||
;; We have both cached and uncached NOV headers, so we
|
||
;; braid them.
|
||
(gnus-cache-braid-nov group cached)
|
||
type)
|
||
(t
|
||
;; We braid HEADs.
|
||
(gnus-cache-braid-heads group (gnus-sorted-intersection
|
||
cached articles))
|
||
type)))))))
|
||
|
||
(defun gnus-cache-enter-article (&optional n)
|
||
"Enter the next N articles into the cache.
|
||
If not given a prefix, use the process marked articles instead.
|
||
Returns the list of articles entered."
|
||
(interactive "P")
|
||
(let (out)
|
||
(dolist (article (gnus-summary-work-articles n))
|
||
(gnus-summary-remove-process-mark article)
|
||
(if (natnump article)
|
||
(when (gnus-cache-possibly-enter-article
|
||
gnus-newsgroup-name article
|
||
nil nil nil t)
|
||
(setq gnus-newsgroup-undownloaded (delq article gnus-newsgroup-undownloaded))
|
||
(push article out))
|
||
(gnus-message 2 "Can't cache article %d" article))
|
||
(gnus-summary-update-download-mark article)
|
||
(gnus-summary-update-secondary-mark article))
|
||
(gnus-summary-next-subject 1)
|
||
(gnus-summary-position-point)
|
||
(nreverse out)))
|
||
|
||
(defun gnus-cache-remove-article (&optional n)
|
||
"Remove the next N articles from the cache.
|
||
If not given a prefix, use the process marked articles instead.
|
||
Returns the list of articles removed."
|
||
(interactive "P")
|
||
(gnus-cache-change-buffer gnus-newsgroup-name)
|
||
(let (out)
|
||
(dolist (article (gnus-summary-work-articles n))
|
||
(gnus-summary-remove-process-mark article)
|
||
(when (gnus-cache-possibly-remove-article article nil nil nil t)
|
||
(when gnus-newsgroup-agentized
|
||
(let ((alist (gnus-agent-load-alist gnus-newsgroup-name)))
|
||
(unless (cdr (assoc article alist))
|
||
(setq gnus-newsgroup-undownloaded
|
||
(gnus-add-to-sorted-list
|
||
gnus-newsgroup-undownloaded article)))))
|
||
(push article out))
|
||
(gnus-summary-update-download-mark article)
|
||
(gnus-summary-update-secondary-mark article))
|
||
(gnus-summary-next-subject 1)
|
||
(gnus-summary-position-point)
|
||
(nreverse out)))
|
||
|
||
(defun gnus-cached-article-p (article)
|
||
"Say whether ARTICLE is cached in the current group."
|
||
(memq article gnus-newsgroup-cached))
|
||
|
||
(defun gnus-summary-insert-cached-articles ()
|
||
"Insert all the articles cached for this group into the current buffer."
|
||
(interactive)
|
||
(let ((gnus-verbose (max 6 gnus-verbose)))
|
||
(cond
|
||
((not gnus-newsgroup-cached)
|
||
(gnus-message 3 "No cached articles for this group"))
|
||
;; This is faster if there are few articles to insert.
|
||
((< (length gnus-newsgroup-cached) 20)
|
||
(gnus-summary-goto-subjects gnus-newsgroup-cached))
|
||
(t
|
||
(gnus-summary-include-articles gnus-newsgroup-cached)))))
|
||
|
||
(defun gnus-summary-limit-include-cached ()
|
||
"Limit the summary buffer to articles that are cached."
|
||
(interactive)
|
||
(let ((gnus-verbose (max 6 gnus-verbose)))
|
||
(if gnus-newsgroup-cached
|
||
(progn
|
||
(gnus-summary-limit gnus-newsgroup-cached)
|
||
(gnus-summary-position-point))
|
||
(gnus-message 3 "No cached articles for this group"))))
|
||
|
||
;;; Internal functions.
|
||
|
||
(defun gnus-cache-change-buffer (group)
|
||
(and gnus-cache-buffer
|
||
;; See if the current group's overview cache has been loaded.
|
||
(or (string= group (car gnus-cache-buffer))
|
||
;; Another overview cache is current, save it.
|
||
(gnus-cache-save-buffers)))
|
||
;; if gnus-cache buffer is nil, create it
|
||
(unless gnus-cache-buffer
|
||
;; Create cache buffer
|
||
(save-excursion
|
||
(setq gnus-cache-buffer
|
||
(cons group
|
||
(set-buffer (gnus-get-buffer-create
|
||
" *gnus-cache-overview*"))))
|
||
;; Insert the contents of this group's cache overview.
|
||
(erase-buffer)
|
||
(let ((file (gnus-cache-file-name group ".overview"))
|
||
(file-name-coding-system nnmail-pathname-coding-system))
|
||
(when (file-exists-p file)
|
||
(nnheader-insert-file-contents file)))
|
||
;; We have a fresh (empty/just loaded) buffer,
|
||
;; mark it as unmodified to save a redundant write later.
|
||
(set-buffer-modified-p nil))))
|
||
|
||
;; Return whether an article is a member of a class.
|
||
(defun gnus-cache-member-of-class (class ticked dormant unread)
|
||
(or (and ticked (memq 'ticked class))
|
||
(and dormant (memq 'dormant class))
|
||
(and unread (memq 'unread class))
|
||
(and (not unread) (not ticked) (not dormant) (memq 'read class))))
|
||
|
||
(defun gnus-cache-file-name (group article)
|
||
(expand-file-name
|
||
(if (stringp article) article (int-to-string article))
|
||
(file-name-as-directory
|
||
(expand-file-name
|
||
(nnheader-translate-file-chars
|
||
(if (gnus-use-long-file-name 'not-cache)
|
||
group
|
||
(let ((group (nnheader-replace-duplicate-chars-in-string
|
||
(nnheader-replace-chars-in-string group ?/ ?_)
|
||
?. ?_)))
|
||
;; Translate the first colon into a slash.
|
||
(when (string-match ":" group)
|
||
(setq group (concat (substring group 0 (match-beginning 0))
|
||
"/" (substring group (match-end 0)))))
|
||
(nnheader-replace-chars-in-string group ?. ?/)))
|
||
t)
|
||
gnus-cache-directory))))
|
||
|
||
(defun gnus-cache-update-article (group article)
|
||
"If ARTICLE is in the cache, remove it and re-enter it."
|
||
(gnus-cache-change-buffer group)
|
||
(when (gnus-cache-possibly-remove-article article nil nil nil t)
|
||
(let ((gnus-use-cache nil))
|
||
(gnus-cache-possibly-enter-article
|
||
gnus-newsgroup-name article
|
||
nil nil nil t))))
|
||
|
||
(defun gnus-cache-possibly-remove-article (article ticked dormant unread
|
||
&optional force)
|
||
"Possibly remove ARTICLE from the cache."
|
||
(let ((group gnus-newsgroup-name)
|
||
(number article)
|
||
file
|
||
(file-name-coding-system nnmail-pathname-coding-system))
|
||
;; If this is a virtual group, we find the real group.
|
||
(when (gnus-virtual-group-p group)
|
||
(let ((result (nnvirtual-find-group-art
|
||
(gnus-group-real-name group) article)))
|
||
(setq group (car result)
|
||
number (cdr result))))
|
||
(setq file (gnus-cache-file-name group number))
|
||
(when (and (file-exists-p file)
|
||
(or force
|
||
(gnus-cache-member-of-class
|
||
gnus-cache-remove-articles ticked dormant unread)))
|
||
(save-excursion
|
||
(gnus-cache-update-file-total-fetched-for group file t)
|
||
(delete-file file)
|
||
|
||
(set-buffer (cdr gnus-cache-buffer))
|
||
(goto-char (point-min))
|
||
(when (or (looking-at (concat (int-to-string number) "\t"))
|
||
(search-forward (concat "\n" (int-to-string number) "\t")
|
||
(point-max) t))
|
||
(gnus-delete-line)))
|
||
(unless (setq gnus-newsgroup-cached
|
||
(delq article gnus-newsgroup-cached))
|
||
(remhash gnus-newsgroup-name gnus-cache-active-hashtb)
|
||
(setq gnus-cache-active-altered t))
|
||
(gnus-summary-update-secondary-mark article)
|
||
t)))
|
||
|
||
(defun gnus-cache-articles-in-group (group)
|
||
"Return a sorted list of cached articles in GROUP."
|
||
(let ((dir (file-name-directory (gnus-cache-file-name group 1)))
|
||
articles
|
||
(file-name-coding-system nnmail-pathname-coding-system))
|
||
(when (file-exists-p dir)
|
||
(setq articles
|
||
(sort (mapcar (lambda (name) (string-to-number name))
|
||
(directory-files dir nil "^[0-9]+$" t))
|
||
'<))
|
||
;; Update the cache active file, just to synch more.
|
||
(if articles
|
||
(progn
|
||
(gnus-cache-update-active group (car articles) t)
|
||
(gnus-cache-update-active group (car (last articles))))
|
||
(when (gethash group gnus-cache-active-hashtb)
|
||
(remhash group gnus-cache-active-hashtb)
|
||
(setq gnus-cache-active-altered t)))
|
||
articles)))
|
||
|
||
(defun gnus-cache-braid-nov (group cached &optional file)
|
||
(let ((cache-buf (gnus-get-buffer-create " *gnus-cache*"))
|
||
beg end)
|
||
(gnus-cache-save-buffers)
|
||
(with-current-buffer cache-buf
|
||
(erase-buffer)
|
||
(let ((coding-system-for-read gnus-cache-overview-coding-system)
|
||
(file-name-coding-system nnmail-pathname-coding-system))
|
||
(insert-file-contents
|
||
(or file (gnus-cache-file-name group ".overview"))))
|
||
(goto-char (point-min))
|
||
(insert "\n")
|
||
(goto-char (point-min)))
|
||
(set-buffer nntp-server-buffer)
|
||
(goto-char (point-min))
|
||
(while cached
|
||
(while (and (not (eobp))
|
||
(< (read (current-buffer)) (car cached)))
|
||
(forward-line 1))
|
||
(beginning-of-line)
|
||
(set-buffer cache-buf)
|
||
(if (search-forward (concat "\n" (int-to-string (car cached)) "\t")
|
||
nil t)
|
||
(setq beg (point-at-bol)
|
||
end (progn (end-of-line) (point)))
|
||
(setq beg nil))
|
||
(set-buffer nntp-server-buffer)
|
||
(when beg
|
||
(insert-buffer-substring cache-buf beg end)
|
||
(insert "\n"))
|
||
(setq cached (cdr cached)))
|
||
(kill-buffer cache-buf)))
|
||
|
||
(defun gnus-cache-braid-heads (group cached)
|
||
(let ((cache-buf (gnus-get-buffer-create " *gnus-cache*")))
|
||
(with-current-buffer cache-buf
|
||
(erase-buffer))
|
||
(set-buffer nntp-server-buffer)
|
||
(goto-char (point-min))
|
||
(dolist (entry cached)
|
||
(while (and (not (eobp))
|
||
(looking-at "2.. +\\([0-9]+\\) ")
|
||
(< (progn (goto-char (match-beginning 1))
|
||
(read (current-buffer)))
|
||
entry))
|
||
(search-forward "\n.\n" nil 'move))
|
||
(beginning-of-line)
|
||
(set-buffer cache-buf)
|
||
(erase-buffer)
|
||
(let ((coding-system-for-read gnus-cache-coding-system)
|
||
(file-name-coding-system nnmail-pathname-coding-system))
|
||
(insert-file-contents (gnus-cache-file-name group entry)))
|
||
(goto-char (point-min))
|
||
(insert "220 ")
|
||
(princ (pop cached) (current-buffer))
|
||
(insert " Article retrieved.\n")
|
||
(search-forward "\n\n" nil 'move)
|
||
(delete-region (point) (point-max))
|
||
(forward-char -1)
|
||
(insert ".")
|
||
(set-buffer nntp-server-buffer)
|
||
(insert-buffer-substring cache-buf))
|
||
(kill-buffer cache-buf)))
|
||
|
||
;;;###autoload
|
||
(defun gnus-jog-cache ()
|
||
"Go through all groups and put the articles into the cache.
|
||
|
||
Usage:
|
||
$ emacs -batch -l ~/.emacs -l gnus -f gnus-jog-cache"
|
||
(interactive)
|
||
(let ((gnus-mark-article-hook nil)
|
||
(gnus-expert-user t)
|
||
(mail-sources nil)
|
||
(gnus-use-dribble-file nil)
|
||
(gnus-novice-user nil)
|
||
(gnus-large-newsgroup nil))
|
||
;; Start Gnus.
|
||
(gnus)
|
||
;; Go through all groups...
|
||
(gnus-group-mark-buffer)
|
||
(gnus-group-iterate nil
|
||
(lambda (group)
|
||
(let (gnus-auto-select-next)
|
||
(gnus-summary-read-group group nil t)
|
||
;; ... and enter the articles into the cache.
|
||
(when (eq major-mode 'gnus-summary-mode)
|
||
(gnus-uu-mark-buffer)
|
||
(gnus-cache-enter-article)
|
||
(kill-buffer (current-buffer))))))))
|
||
|
||
(defun gnus-cache-read-active (&optional force)
|
||
"Read the cache active file."
|
||
(gnus-make-directory gnus-cache-directory)
|
||
(if (or (not (file-exists-p gnus-cache-active-file))
|
||
(zerop (file-attribute-size
|
||
(file-attributes gnus-cache-active-file)))
|
||
force)
|
||
;; There is no active file, so we generate one.
|
||
(gnus-cache-generate-active)
|
||
;; We simply read the active file.
|
||
(save-excursion
|
||
(gnus-set-work-buffer)
|
||
(nnheader-insert-file-contents gnus-cache-active-file)
|
||
(gnus-active-to-gnus-format
|
||
nil (setq gnus-cache-active-hashtb
|
||
(gnus-make-hashtable
|
||
(count-lines (point-min) (point-max)))))
|
||
(setq gnus-cache-active-altered nil))))
|
||
|
||
(defun gnus-cache-write-active (&optional force)
|
||
"Write the active hashtb to the active file."
|
||
(when (or force
|
||
(and gnus-cache-active-hashtb
|
||
gnus-cache-active-altered))
|
||
(gnus-write-active-file gnus-cache-active-file gnus-cache-active-hashtb t)
|
||
;; Mark the active hashtb as unaltered.
|
||
(setq gnus-cache-active-altered nil)))
|
||
|
||
;; FIXME: Why is there a `gnus-cache-possibly-alter-active',
|
||
;; `gnus-cache-possibly-update-active', and
|
||
;; `gnus-cache-update-active'? Do we really need all three?
|
||
(defun gnus-cache-possibly-update-active (group active)
|
||
"Update active info bounds of GROUP with ACTIVE if necessary.
|
||
The update is performed if ACTIVE contains a higher or lower bound
|
||
than the current."
|
||
(let ((lower t) (higher t))
|
||
(if gnus-cache-active-hashtb
|
||
(let ((cache-active (gethash group gnus-cache-active-hashtb)))
|
||
(when cache-active
|
||
(unless (< (car active) (car cache-active))
|
||
(setq lower nil))
|
||
(unless (> (cdr active) (cdr cache-active))
|
||
(setq higher nil))))
|
||
(gnus-cache-read-active))
|
||
(when lower
|
||
(gnus-cache-update-active group (car active) t))
|
||
(when higher
|
||
(gnus-cache-update-active group (cdr active)))))
|
||
|
||
(defun gnus-cache-update-active (group number &optional low)
|
||
"Update the upper bound of the active info of GROUP to NUMBER.
|
||
If LOW, update the lower bound instead."
|
||
(let ((active (gethash group gnus-cache-active-hashtb)))
|
||
(if (null active)
|
||
;; We just create a new active entry for this group.
|
||
(puthash group (cons number number) gnus-cache-active-hashtb)
|
||
;; Update the lower or upper bound.
|
||
(if low
|
||
(setcar active number)
|
||
(setcdr active number)))
|
||
;; Mark the active hashtb as altered.
|
||
(setq gnus-cache-active-altered t)))
|
||
|
||
;;;###autoload
|
||
(defun gnus-cache-generate-active (&optional directory)
|
||
"Generate the cache active file."
|
||
(interactive)
|
||
(let* ((top (null directory))
|
||
(directory (expand-file-name (or directory gnus-cache-directory)))
|
||
(file-name-coding-system nnmail-pathname-coding-system)
|
||
(files (directory-files directory 'full))
|
||
(group
|
||
(if top
|
||
""
|
||
(string-match
|
||
(concat "^" (regexp-quote
|
||
(file-name-as-directory
|
||
(expand-file-name gnus-cache-directory))))
|
||
(directory-file-name directory))
|
||
(nnheader-replace-chars-in-string
|
||
(substring (directory-file-name directory) (match-end 0))
|
||
?/ ?.)))
|
||
nums alphs)
|
||
(when top
|
||
(gnus-message 5 "Generating the cache active file...")
|
||
(setq gnus-cache-active-hashtb (gnus-make-hashtable 123)))
|
||
(when (string-match "^\\(nn[^_]+\\)_" group)
|
||
(setq group (replace-match "\\1:" t nil group)))
|
||
;; Separate articles from all other files and directories.
|
||
(while files
|
||
(if (string-match "^[0-9]+$" (file-name-nondirectory (car files)))
|
||
(push (string-to-number (file-name-nondirectory (pop files))) nums)
|
||
(push (pop files) alphs)))
|
||
;; If we have nums, then this is probably a valid group.
|
||
(when (setq nums (sort nums '<))
|
||
(puthash group
|
||
(cons (car nums) (car (last nums)))
|
||
gnus-cache-active-hashtb))
|
||
;; Go through all the other files.
|
||
(dolist (file alphs)
|
||
(when (and (file-directory-p file)
|
||
(not (string-match "^\\."
|
||
(file-name-nondirectory file))))
|
||
;; We descend directories.
|
||
(gnus-cache-generate-active file)))
|
||
;; Write the new active file.
|
||
(when top
|
||
(gnus-cache-write-active t)
|
||
(gnus-message 5 "Generating the cache active file...done"))))
|
||
|
||
;;;###autoload
|
||
(defun gnus-cache-generate-nov-databases (dir)
|
||
"Generate NOV files recursively starting in DIR."
|
||
(interactive (list gnus-cache-directory))
|
||
(gnus-cache-close)
|
||
(let ((nnml-generate-active-function 'identity))
|
||
(nnml-generate-nov-databases-directory dir))
|
||
|
||
(setq gnus-cache-total-fetched-hashtb nil)
|
||
|
||
(gnus-cache-open))
|
||
|
||
(defun gnus-cache-move-cache (dir)
|
||
"Move the cache tree to somewhere else."
|
||
(interactive "FMove the cache tree to: ")
|
||
(rename-file gnus-cache-directory dir))
|
||
|
||
(defun gnus-cache-fully-p (&optional group)
|
||
"Return non-nil if the cache should be fully used.
|
||
If GROUP is non-nil, also cater to `gnus-cacheable-groups' and
|
||
`gnus-uncacheable-groups'."
|
||
(and gnus-use-cache
|
||
(not (eq gnus-use-cache 'passive))
|
||
(if (null group)
|
||
t
|
||
(and (or (not gnus-cacheable-groups)
|
||
(string-match gnus-cacheable-groups group))
|
||
(or (not gnus-uncacheable-groups)
|
||
(not (string-match gnus-uncacheable-groups group)))))))
|
||
|
||
;;;###autoload
|
||
(defun gnus-cache-rename-group (old-group new-group)
|
||
"Rename OLD-GROUP as NEW-GROUP.
|
||
Always updates the cache, even when disabled, as the old cache
|
||
files would corrupt Gnus when the cache was next enabled. It
|
||
depends on the caller to determine whether group renaming is
|
||
supported."
|
||
(let ((old-dir (gnus-cache-file-name old-group ""))
|
||
(new-dir (gnus-cache-file-name new-group ""))
|
||
(file-name-coding-system nnmail-pathname-coding-system))
|
||
(gnus-rename-file old-dir new-dir t))
|
||
|
||
(gnus-cache-rename-group-total-fetched-for old-group new-group)
|
||
|
||
(let ((no-save gnus-cache-active-hashtb))
|
||
(unless gnus-cache-active-hashtb
|
||
(gnus-cache-read-active))
|
||
(let* ((old-group-hash-value
|
||
(gethash old-group gnus-cache-active-hashtb))
|
||
(new-group-hash-value
|
||
(gethash new-group gnus-cache-active-hashtb))
|
||
(delta
|
||
(or old-group-hash-value new-group-hash-value)))
|
||
(puthash new-group old-group-hash-value gnus-cache-active-hashtb)
|
||
(puthash old-group nil gnus-cache-active-hashtb)
|
||
|
||
(if no-save
|
||
(setq gnus-cache-active-altered delta)
|
||
(gnus-cache-write-active delta)))))
|
||
|
||
;;;###autoload
|
||
(defun gnus-cache-delete-group (group)
|
||
"Delete GROUP from the cache.
|
||
Always updates the cache, even when disabled, as the old cache
|
||
files would corrupt gnus when the cache was next enabled.
|
||
Depends upon the caller to determine whether group deletion is
|
||
supported."
|
||
(let ((dir (gnus-cache-file-name group ""))
|
||
(file-name-coding-system nnmail-pathname-coding-system))
|
||
(gnus-delete-directory dir))
|
||
|
||
(gnus-cache-delete-group-total-fetched-for group)
|
||
|
||
(let ((no-save gnus-cache-active-hashtb))
|
||
(unless gnus-cache-active-hashtb
|
||
(gnus-cache-read-active))
|
||
(let* ((group-hash-value (gethash group gnus-cache-active-hashtb)))
|
||
(remhash group gnus-cache-active-hashtb)
|
||
|
||
(if no-save
|
||
(setq gnus-cache-active-altered group-hash-value)
|
||
(gnus-cache-write-active group-hash-value)))))
|
||
|
||
(defvar gnus-cache-inhibit-update-total-fetched-for nil)
|
||
(defvar gnus-cache-need-update-total-fetched-for nil)
|
||
|
||
(defmacro gnus-cache-with-refreshed-group (group &rest body)
|
||
`(prog1 (let ((gnus-cache-inhibit-update-total-fetched-for t))
|
||
,@body)
|
||
(when (and gnus-cache-need-update-total-fetched-for
|
||
(not gnus-cache-inhibit-update-total-fetched-for))
|
||
(with-current-buffer gnus-group-buffer
|
||
(setq gnus-cache-need-update-total-fetched-for nil)
|
||
(gnus-group-update-group ,group t)))))
|
||
|
||
(defun gnus-cache-update-file-total-fetched-for (group file &optional subtract)
|
||
(when gnus-cache-total-fetched-hashtb
|
||
(gnus-cache-with-refreshed-group
|
||
group
|
||
(let* ((entry (or (gethash group gnus-cache-total-fetched-hashtb)
|
||
(puthash group (make-vector 2 0)
|
||
gnus-cache-total-fetched-hashtb)))
|
||
size)
|
||
|
||
(if file
|
||
(setq size (or (file-attribute-size (file-attributes file)) 0))
|
||
(let* ((file-name-coding-system nnmail-pathname-coding-system)
|
||
(files (directory-files (gnus-cache-file-name group "")
|
||
t nil t))
|
||
file attrs)
|
||
(setq size 0.0)
|
||
(while (setq file (pop files))
|
||
(setq attrs (file-attributes file))
|
||
(unless (file-attribute-type attrs)
|
||
(cl-incf size (float (file-attribute-size attrs)))))))
|
||
|
||
(setq gnus-cache-need-update-total-fetched-for t)
|
||
|
||
(cl-incf (nth 1 entry) (if subtract (- size) size))))))
|
||
|
||
(defun gnus-cache-update-overview-total-fetched-for (group file)
|
||
(when gnus-cache-total-fetched-hashtb
|
||
(gnus-cache-with-refreshed-group
|
||
group
|
||
(let* ((entry (or (gethash group gnus-cache-total-fetched-hashtb)
|
||
(puthash group (make-list 2 0)
|
||
gnus-cache-total-fetched-hashtb)))
|
||
(file-name-coding-system nnmail-pathname-coding-system)
|
||
(size (or (file-attribute-size (file-attributes
|
||
(or file
|
||
(gnus-cache-file-name group ".overview"))))
|
||
0)))
|
||
(setq gnus-cache-need-update-total-fetched-for t)
|
||
(setf (nth 0 entry) size)))))
|
||
|
||
(defun gnus-cache-rename-group-total-fetched-for (old-group new-group)
|
||
"Record of disk space used by OLD-GROUP now associated with NEW-GROUP."
|
||
(when gnus-cache-total-fetched-hashtb
|
||
(let ((entry (gethash old-group gnus-cache-total-fetched-hashtb)))
|
||
(puthash new-group entry gnus-cache-total-fetched-hashtb)
|
||
(remhash old-group gnus-cache-total-fetched-hashtb))))
|
||
|
||
(defun gnus-cache-delete-group-total-fetched-for (group)
|
||
"Delete record of disk space used by GROUP being deleted."
|
||
(when gnus-cache-total-fetched-hashtb
|
||
(remhash group gnus-cache-total-fetched-hashtb)))
|
||
|
||
(defun gnus-cache-total-fetched-for (group &optional no-inhibit)
|
||
"Get total disk space used by the cache for the specified GROUP."
|
||
(unless (equal group "dummy.group")
|
||
(unless gnus-cache-total-fetched-hashtb
|
||
(setq gnus-cache-total-fetched-hashtb (gnus-make-hashtable 1000)))
|
||
(let* ((entry (gethash group gnus-cache-total-fetched-hashtb)))
|
||
(if entry
|
||
(apply '+ entry)
|
||
(let ((gnus-cache-inhibit-update-total-fetched-for (not no-inhibit)))
|
||
(+
|
||
(gnus-cache-update-overview-total-fetched-for group nil)
|
||
(gnus-cache-update-file-total-fetched-for group nil)))))))
|
||
|
||
(provide 'gnus-cache)
|
||
|
||
;;; gnus-cache.el ends here
|