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; Update copyright years in more files64b3777631
; Run set-copyright from admin.el8e1c56ae46
; Add 2024 to copyright years # Conflicts: # doc/misc/modus-themes.org # doc/misc/texinfo.tex # etc/NEWS # etc/refcards/ru-refcard.tex # etc/themes/modus-operandi-theme.el # etc/themes/modus-themes.el # etc/themes/modus-vivendi-theme.el # lib/alloca.in.h # lib/binary-io.h # lib/c-ctype.h # lib/c-strcasecmp.c # lib/c-strncasecmp.c # lib/careadlinkat.c # lib/cloexec.c # lib/close-stream.c # lib/diffseq.h # lib/dup2.c # lib/filemode.h # lib/fpending.c # lib/fpending.h # lib/fsusage.c # lib/getgroups.c # lib/getloadavg.c # lib/gettext.h # lib/gettime.c # lib/gettimeofday.c # lib/group-member.c # lib/malloc.c # lib/md5-stream.c # lib/md5.c # lib/md5.h # lib/memmem.c # lib/memrchr.c # lib/nanosleep.c # lib/save-cwd.h # lib/sha1.c # lib/sig2str.c # lib/stdlib.in.h # lib/strtoimax.c # lib/strtol.c # lib/strtoll.c # lib/time_r.c # lib/xalloc-oversized.h # lisp/auth-source-pass.el # lisp/emacs-lisp/lisp-mnt.el # lisp/emacs-lisp/timer.el # lisp/info-look.el # lisp/jit-lock.el # lisp/loadhist.el # lisp/mail/rmail.el # lisp/net/ntlm.el # lisp/net/webjump.el # lisp/progmodes/asm-mode.el # lisp/progmodes/project.el # lisp/progmodes/sh-script.el # lisp/textmodes/flyspell.el # lisp/textmodes/reftex-toc.el # lisp/textmodes/reftex.el # lisp/textmodes/tex-mode.el # lisp/url/url-gw.el # m4/alloca.m4 # m4/clock_time.m4 # m4/d-type.m4 # m4/dirent_h.m4 # m4/dup2.m4 # m4/euidaccess.m4 # m4/fchmodat.m4 # m4/filemode.m4 # m4/fsusage.m4 # m4/getgroups.m4 # m4/getloadavg.m4 # m4/getrandom.m4 # m4/gettime.m4 # m4/gettimeofday.m4 # m4/gnulib-common.m4 # m4/group-member.m4 # m4/inttypes.m4 # m4/malloc.m4 # m4/manywarnings.m4 # m4/mempcpy.m4 # m4/memrchr.m4 # m4/mkostemp.m4 # m4/mktime.m4 # m4/nproc.m4 # m4/nstrftime.m4 # m4/pathmax.m4 # m4/pipe2.m4 # m4/pselect.m4 # m4/pthread_sigmask.m4 # m4/readlink.m4 # m4/realloc.m4 # m4/sig2str.m4 # m4/ssize_t.m4 # m4/stat-time.m4 # m4/stddef_h.m4 # m4/stdint.m4 # m4/stdio_h.m4 # m4/stdlib_h.m4 # m4/stpcpy.m4 # m4/strnlen.m4 # m4/strtoimax.m4 # m4/strtoll.m4 # m4/time_h.m4 # m4/timegm.m4 # m4/timer_time.m4 # m4/timespec.m4 # m4/unistd_h.m4 # m4/warnings.m4 # nt/configure.bat # nt/preprep.c # test/lisp/register-tests.el
593 lines
18 KiB
EmacsLisp
593 lines
18 KiB
EmacsLisp
;;; nnweb.el --- retrieving articles via web search engines -*- lexical-binding: t; -*-
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;; Copyright (C) 1996-2024 Free Software Foundation, Inc.
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;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
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;; Keywords: news
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs 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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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;;; Code:
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(eval-when-compile (require 'cl-lib))
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(require 'nnoo)
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(require 'message)
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(require 'gnus-util)
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(require 'gnus)
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(require 'nnmail)
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(require 'mm-util)
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(require 'mm-url)
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(require 'url)
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(nnoo-declare nnweb)
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(defvoo nnweb-directory (nnheader-concat gnus-directory "nnweb/")
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"Where nnweb will save its files.")
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(defvoo nnweb-type 'google
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"What search engine type is being used.
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Valid types include `google' and `dejanews'.")
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(defvar nnweb-type-definition
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'((google
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(id . "https://www.google.com/groups?as_umsgid=%s&hl=en&dmode=source")
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(result . "https://groups.google.com/group/%s/msg/%s?dmode=source")
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(article . nnweb-google-wash-article)
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(reference . identity)
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(map . nnweb-google-create-mapping)
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(search . nnweb-google-search)
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(address . "https://groups.google.com/groups")
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(base . "https://groups.google.com")
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(identifier . nnweb-google-identity))
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;; FIXME: Make obsolete?
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(dejanews ;; alias of google
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(id . "https://www.google.com/groups?as_umsgid=%s&hl=en&dmode=source")
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(result . "https://groups.google.com/group/%s/msg/%s?dmode=source")
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(article . nnweb-google-wash-article)
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(reference . identity)
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(map . nnweb-google-create-mapping)
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(search . nnweb-google-search)
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(address . "https://groups.google.com/groups")
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(base . "https://groups.google.com")
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(identifier . nnweb-google-identity)))
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"Type-definition alist.")
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(defvoo nnweb-search nil
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"Search string to feed to Google.")
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(defvoo nnweb-max-hits 999
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"Maximum number of hits to display.")
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(defvoo nnweb-ephemeral-p nil
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"Whether this nnweb server is ephemeral.")
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;;; Internal variables
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(defvoo nnweb-articles nil)
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(defvoo nnweb-buffer nil)
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(defvoo nnweb-group-alist nil)
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(defvoo nnweb-group nil)
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(defvoo nnweb-hashtb nil)
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;;; Interface functions
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(nnoo-define-basics nnweb)
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(deffoo nnweb-retrieve-headers (articles &optional group server _fetch-old)
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(nnweb-possibly-change-server group server)
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(with-current-buffer nntp-server-buffer
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(erase-buffer)
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(let (article header)
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(while (setq article (pop articles))
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(when (setq header (cadr (assq article nnweb-articles)))
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(nnheader-insert-nov header)))
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'nov)))
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(deffoo nnweb-request-scan (&optional group server)
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(nnweb-possibly-change-server group server)
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(if nnweb-ephemeral-p
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(setq nnweb-hashtb (gnus-make-hashtable 4000))
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(unless nnweb-articles
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(nnweb-read-overview group)))
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(funcall (nnweb-definition 'map))
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(unless nnweb-ephemeral-p
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(nnweb-write-active)
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(nnweb-write-overview group)))
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(deffoo nnweb-request-group (group &optional server dont-check _info)
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(nnweb-possibly-change-server group server)
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(unless (or nnweb-ephemeral-p
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dont-check
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nnweb-articles)
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(nnweb-read-overview group))
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(cond
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((not nnweb-articles)
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(nnheader-report 'nnweb "No matching articles"))
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(t
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(let ((active (if nnweb-ephemeral-p
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(cons (caar nnweb-articles)
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(caar (last nnweb-articles)))
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(cadr (assoc group nnweb-group-alist)))))
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(nnheader-report 'nnweb "Opened group %s" group)
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(nnheader-insert
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"211 %d %d %d %s\n" (length nnweb-articles)
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(car active) (cdr active) group)))))
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(deffoo nnweb-close-group (group &optional server)
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(nnweb-possibly-change-server group server)
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(when (gnus-buffer-live-p nnweb-buffer)
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(with-current-buffer nnweb-buffer
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(set-buffer-modified-p nil)
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(kill-buffer nnweb-buffer)))
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t)
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(deffoo nnweb-request-article (article &optional group server buffer)
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(nnweb-possibly-change-server group server)
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(with-current-buffer (or buffer nntp-server-buffer)
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(let* ((header (cadr (assq article nnweb-articles)))
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(url (and header (mail-header-xref header))))
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(when (or (and url
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(mm-url-insert url))
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(and (stringp article)
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(nnweb-definition 'id t)
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(let ((fetch (nnweb-definition 'id))
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(art (when (string-match "^<\\(.*\\)>$" article)
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(match-string 1 article)))
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) ;; active
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(when (and fetch art)
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(setq url (format fetch
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(mm-url-form-encode-xwfu art)))
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(mm-url-insert url)
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(if (nnweb-definition 'reference t)
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(setq article
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(funcall (nnweb-definition 'reference)
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article)))))))
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(unless nnheader-callback-function
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(funcall (nnweb-definition 'article)))
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(nnheader-report 'nnweb "Fetched article %s" article)
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(cons group (and (numberp article) article))))))
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(deffoo nnweb-close-server (&optional server _defs)
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(when (and (nnweb-server-opened server)
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(gnus-buffer-live-p nnweb-buffer))
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(with-current-buffer nnweb-buffer
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(set-buffer-modified-p nil)
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(kill-buffer nnweb-buffer)))
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(nnoo-close-server 'nnweb server))
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(deffoo nnweb-request-list (&optional server)
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(nnweb-possibly-change-server nil server)
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(with-current-buffer nntp-server-buffer
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(nnmail-generate-active (list (assoc server nnweb-group-alist)))
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t))
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(deffoo nnweb-request-update-info (_group _info &optional _server))
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(deffoo nnweb-asynchronous-p ()
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nil)
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(deffoo nnweb-request-create-group (group &optional server _args)
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(nnweb-possibly-change-server nil server)
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(nnweb-request-delete-group group)
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(push `(,group ,(cons 1 0)) nnweb-group-alist)
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(nnweb-write-active)
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t)
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(deffoo nnweb-request-delete-group (group &optional _force server)
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(nnweb-possibly-change-server group server)
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(gnus-alist-pull group nnweb-group-alist t)
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(nnweb-write-active)
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(gnus-delete-file (nnweb-overview-file group))
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t)
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(nnoo-define-skeleton nnweb)
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;;; Internal functions
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(defun nnweb-read-overview (group)
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"Read the overview of GROUP and build the map."
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(when (file-exists-p (nnweb-overview-file group))
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(nnheader-insert-file-contents (nnweb-overview-file group))
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(goto-char (point-min))
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(let (header)
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(while (not (eobp))
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(setq header (nnheader-parse-nov))
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(forward-line 1)
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(push (list (mail-header-number header)
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header (mail-header-xref header))
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nnweb-articles)
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(nnweb-set-hashtb header (car nnweb-articles))))))
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(defun nnweb-write-overview (group)
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"Write the overview file for GROUP."
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(with-temp-file (nnweb-overview-file group)
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(let ((articles nnweb-articles))
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(while articles
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(nnheader-insert-nov (cadr (pop articles)))))))
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(defun nnweb-set-hashtb (header data)
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(puthash (nnweb-identifier (mail-header-xref header))
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data nnweb-hashtb))
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(defun nnweb-get-hashtb (url)
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(gethash (nnweb-identifier url) nnweb-hashtb))
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(defun nnweb-identifier (ident)
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(funcall (nnweb-definition 'identifier) ident))
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(defun nnweb-overview-file (group)
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"Return the name of the overview file of GROUP."
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(nnheader-concat nnweb-directory group ".overview"))
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(defun nnweb-write-active ()
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"Save the active file."
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(gnus-make-directory nnweb-directory)
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(with-temp-file (nnheader-concat nnweb-directory "active")
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(prin1 `(setq nnweb-group-alist ',nnweb-group-alist) (current-buffer))))
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(defun nnweb-read-active ()
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"Read the active file."
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(load (nnheader-concat nnweb-directory "active") t t t))
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(defun nnweb-definition (type &optional noerror)
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"Return the definition of TYPE."
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(when (eq nnweb-type 'gmane)
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(user-error "`gmane' is no longer a valid value for `nnweb-type'"))
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(let ((def (cdr (assq type (assq nnweb-type nnweb-type-definition)))))
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(when (and (not def)
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(not noerror))
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(error "Undefined definition %s" type))
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def))
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(defun nnweb-possibly-change-server (&optional group server)
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(when server
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(unless (nnweb-server-opened server)
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(nnweb-open-server server))
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(nnweb-init server))
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(unless nnweb-group-alist
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(nnweb-read-active))
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(unless nnweb-hashtb
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(setq nnweb-hashtb (make-hash-table :size 4000 :test #'equal)))
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(when group
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(setq nnweb-group group)))
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(defun nnweb-init (server)
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"Initialize buffers and such."
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(unless (gnus-buffer-live-p nnweb-buffer)
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(setq nnweb-buffer
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(save-current-buffer
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(when (eq nnweb-type 'gmane)
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(user-error "`gmane' is no longer a valid value for `nnweb-type'"))
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(nnheader-set-temp-buffer
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(format " *nnweb %s %s %s*"
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nnweb-type nnweb-search server))
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(mm-disable-multibyte)
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(current-buffer)))))
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;;;
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;;; groups.google.com
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;;;
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(defun nnweb-google-wash-article ()
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;; We have Google's masked e-mail addresses here. :-/
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(let ((case-fold-search t)
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(start-re "<pre>[\r\n ]*")
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(end-re "[\r\n ]*</pre>"))
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(goto-char (point-min))
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(if (save-excursion
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(or (re-search-forward "The requested message.*could not be found."
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nil t)
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(not (and (re-search-forward start-re nil t)
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(re-search-forward end-re nil t)))))
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;; FIXME: Don't know how to indicate "not found".
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;; Should this function throw an error? --rsteib
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(progn
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(gnus-message 3 "Requested article not found")
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(erase-buffer))
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(delete-region (point-min)
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(re-search-forward start-re))
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(goto-char (point-min))
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(delete-region (progn
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(re-search-forward end-re)
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(match-beginning 0))
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(point-max))
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(mm-url-decode-entities))))
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(defun nnweb-google-parse-1 (&optional Message-ID)
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"Parse search result in current buffer."
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(let ((i 0)
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(case-fold-search t)
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(active (cadr (assoc nnweb-group nnweb-group-alist)))
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Subject Date Newsgroups From
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map url mid)
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(unless active
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(push (list nnweb-group (setq active (cons 1 0)))
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nnweb-group-alist))
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;; Go through all the article hits on this page.
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(goto-char (point-min))
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(while
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(re-search-forward
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"a +href=\"/group/\\([^>\"]+\\)/browse_thread/[^>]+#\\([0-9a-f]+\\)"
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nil t)
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(setq Newsgroups (match-string-no-properties 1)
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;; Note: Starting with Google Groups 2, `mid' is a Google-internal
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;; ID, not a proper Message-ID.
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mid (match-string-no-properties 2)
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url (format
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(nnweb-definition 'result) Newsgroups mid))
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(narrow-to-region (search-forward ">" nil t)
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(search-forward "</a>" nil t))
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(mm-url-remove-markup)
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(mm-url-decode-entities)
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(setq Subject (buffer-string))
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(goto-char (point-max))
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(widen)
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(narrow-to-region (point)
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(search-forward "</table" nil t))
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(mm-url-remove-markup)
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(mm-url-decode-entities)
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(goto-char (point-max))
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(when
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(re-search-backward
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"^\\(?:\\(\\w+\\) \\([0-9]+\\)\\|\\S-+\\)\\(?: \\([0-9]\\{4\\}\\)\\)? by ?\\(.*\\)"
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nil t)
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(setq Date (if (match-string 1)
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(format "%s %s 00:00:00 %s"
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(match-string 1)
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(match-string 2)
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(or (match-string 3)
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(format-time-string "%Y")))
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(current-time-string)))
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(setq From (match-string 4)))
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(widen)
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(cl-incf i)
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(unless (nnweb-get-hashtb url)
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(push
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(list
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(cl-incf (cdr active))
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(make-full-mail-header
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(cdr active) (if Newsgroups
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(concat "(" Newsgroups ") " Subject)
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Subject)
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From Date (or Message-ID mid)
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nil 0 0 url))
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map)
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(nnweb-set-hashtb (cadar map) (car map))))
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map))
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(defun nnweb-google-reference (id)
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(let ((map (nnweb-google-parse-1 id)) header)
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(setq nnweb-articles
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(nconc nnweb-articles map))
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(when (setq header (cadar map))
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(mm-url-insert (mail-header-xref header))
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(caar map))))
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(defun nnweb-google-create-mapping ()
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"Perform the search and create a number-to-url alist."
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(with-current-buffer nnweb-buffer
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(erase-buffer)
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(nnheader-message 7 "Searching google...")
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(when (funcall (nnweb-definition 'search) nnweb-search)
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(let ((more t)
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(i 0))
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(while more
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(setq nnweb-articles
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(nconc nnweb-articles (nnweb-google-parse-1)))
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;; Check if there are more articles to fetch
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(goto-char (point-min))
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(cl-incf i 100)
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(if (or (not (re-search-forward
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"<a [^>]+href=\"\n?\\([^>\" \n\t]+\\)[^<]*<img[^>]+src=[^>]+next"
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nil t))
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(>= i nnweb-max-hits))
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(setq more nil)
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;; Yup, there are more articles
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(setq more (concat (nnweb-definition 'base) (match-string 1)))
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(when more
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(erase-buffer)
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(nnheader-message 7 "Searching google...(%d)" i)
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(mm-url-insert more))))
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;; Return the articles in the right order.
|
|
(nnheader-message 7 "Searching google...done")
|
|
(setq nnweb-articles
|
|
(sort nnweb-articles #'car-less-than-car))))))
|
|
|
|
(defun nnweb-google-search (search)
|
|
(mm-url-insert
|
|
(concat
|
|
(nnweb-definition 'address)
|
|
"?"
|
|
(mm-url-encode-www-form-urlencoded
|
|
`(("q" . ,search)
|
|
("num" . ,(number-to-string
|
|
(min 100 nnweb-max-hits)))
|
|
("hq" . "")
|
|
("hl" . "en")
|
|
("lr" . "")
|
|
("safe" . "off")
|
|
("sites" . "groups")
|
|
("filter" . "0")))))
|
|
t)
|
|
|
|
(defun nnweb-google-identity (url)
|
|
"Return a unique identifier based on URL."
|
|
(if (string-match "selm=\\([^ &>]+\\)" url)
|
|
(match-string 1 url)
|
|
url))
|
|
|
|
;;;
|
|
;;; gmane.org -- now obsolete as the gmane.org web interface is gone
|
|
;;;
|
|
(defun nnweb-gmane-create-mapping ()
|
|
"Perform the search and create a number-to-url alist."
|
|
(declare (obsolete nil "30.1"))
|
|
(with-current-buffer nnweb-buffer
|
|
(let ((case-fold-search t)
|
|
(active (or (cadr (assoc nnweb-group nnweb-group-alist))
|
|
(cons 1 0)))
|
|
map)
|
|
(erase-buffer)
|
|
(nnheader-message 7 "Searching Gmane..." )
|
|
(when (funcall (nnweb-definition 'search) nnweb-search)
|
|
(goto-char (point-min))
|
|
;; Skip the status line
|
|
(forward-line 1)
|
|
;; Thanks to Olly Betts we now have NOV lines in our buffer!
|
|
(while (not (eobp))
|
|
(unless (or (eolp) (looking-at "\x0d"))
|
|
(let ((header (nnheader-parse-nov)))
|
|
(let ((xref (mail-header-xref header))
|
|
(from (mail-header-from header))
|
|
(subject (mail-header-subject header))
|
|
(rfc2047-encoding-type 'mime))
|
|
(when (string-match " \\([^:]+\\)[:/]\\([0-9]+\\)" xref)
|
|
(setf (mail-header-xref header)
|
|
(format "http://article.gmane.org/%s/%s/raw"
|
|
(match-string 1 xref)
|
|
(match-string 2 xref))))
|
|
|
|
;; Add host part to gmane-encrypted addresses
|
|
(when (string-match "@$" from)
|
|
(setf (mail-header-from header)
|
|
(concat from "public.gmane.org")))
|
|
|
|
(setf (mail-header-subject header)
|
|
(rfc2047-encode-string subject))
|
|
|
|
(unless (nnweb-get-hashtb (mail-header-xref header))
|
|
(setf (mail-header-number header) (cl-incf (cdr active)))
|
|
(push (list (mail-header-number header) header) map)
|
|
(nnweb-set-hashtb (cadar map) (car map))))))
|
|
(forward-line 1)))
|
|
(nnheader-message 7 "Searching Gmane...done")
|
|
(setq nnweb-articles
|
|
(sort (nconc nnweb-articles map) #'car-less-than-car)))))
|
|
|
|
(defun nnweb-gmane-wash-article ()
|
|
(declare (obsolete nil "30.1"))
|
|
(let ((case-fold-search t))
|
|
(goto-char (point-min))
|
|
(when (search-forward "<!--X-Head-of-Message-->" nil t)
|
|
(delete-region (point-min) (point))
|
|
(goto-char (point-min))
|
|
(while (looking-at "^<li><em>\\([^ ]+\\)</em>.*</li>")
|
|
(replace-match "\\1\\2" t)
|
|
(forward-line 1))
|
|
(mm-url-remove-markup))))
|
|
|
|
(defun nnweb-gmane-search (search)
|
|
(declare (obsolete nil "30.1"))
|
|
(mm-url-insert
|
|
(concat
|
|
(nnweb-definition 'address)
|
|
"?"
|
|
(mm-url-encode-www-form-urlencoded
|
|
`(("query" . ,search)
|
|
("HITSPERPAGE" . ,(number-to-string nnweb-max-hits))
|
|
;;("TOPDOC" . "1000")
|
|
))))
|
|
(setq buffer-file-name nil)
|
|
(set-buffer-multibyte t)
|
|
(decode-coding-region (point-min) (point-max) 'utf-8)
|
|
t)
|
|
|
|
(defun nnweb-gmane-identity (url)
|
|
"Return a unique identifier based on URL."
|
|
(declare (obsolete nil "30.1"))
|
|
(if (string-match "group=\\(.+\\)" url)
|
|
(match-string 1 url)
|
|
url))
|
|
|
|
;;;
|
|
;;; General web interface utility functions
|
|
;;;
|
|
|
|
(defun nnweb-insert-html (parse)
|
|
"Insert HTML based on a w3 parse tree."
|
|
(if (stringp parse)
|
|
(insert parse)
|
|
(insert "<" (symbol-name (car parse)) " ")
|
|
(insert (mapconcat
|
|
(lambda (param)
|
|
(concat (symbol-name (car param)) "="
|
|
(prin1-to-string
|
|
(if (consp (cdr param))
|
|
(cadr param)
|
|
(cdr param)))))
|
|
(nth 1 parse)
|
|
" "))
|
|
(insert ">\n")
|
|
(mapc #'nnweb-insert-html (nth 2 parse))
|
|
(insert "</" (symbol-name (car parse)) ">\n")))
|
|
|
|
(defun nnweb-parse-find (type parse &optional maxdepth)
|
|
"Find the element of TYPE in PARSE."
|
|
(catch 'found
|
|
(nnweb-parse-find-1 type parse maxdepth)))
|
|
|
|
(defun nnweb-parse-find-1 (type contents maxdepth)
|
|
(when (or (null maxdepth)
|
|
(not (zerop maxdepth)))
|
|
(when (consp contents)
|
|
(when (eq (car contents) type)
|
|
(throw 'found contents))
|
|
(when (listp (cdr contents))
|
|
(dolist (element contents)
|
|
(when (consp element)
|
|
(nnweb-parse-find-1 type element
|
|
(and maxdepth (1- maxdepth)))))))))
|
|
|
|
(defun nnweb-parse-find-all (type parse)
|
|
"Find all elements of TYPE in PARSE."
|
|
(catch 'found
|
|
(nnweb-parse-find-all-1 type parse)))
|
|
|
|
(defun nnweb-parse-find-all-1 (type contents)
|
|
(let (result)
|
|
(when (consp contents)
|
|
(if (eq (car contents) type)
|
|
(push contents result)
|
|
(when (listp (cdr contents))
|
|
(dolist (element contents)
|
|
(when (consp element)
|
|
(setq result
|
|
(nconc result (nnweb-parse-find-all-1 type element))))))))
|
|
result))
|
|
|
|
(defvar nnweb-text)
|
|
(defun nnweb-text (parse)
|
|
"Return a list of text contents in PARSE."
|
|
(let ((nnweb-text nil))
|
|
(nnweb-text-1 parse)
|
|
(nreverse nnweb-text)))
|
|
|
|
(defun nnweb-text-1 (contents)
|
|
(dolist (element contents)
|
|
(if (stringp element)
|
|
(push element nnweb-text)
|
|
(when (and (consp element)
|
|
(listp (cdr element)))
|
|
(nnweb-text-1 element)))))
|
|
|
|
(provide 'nnweb)
|
|
|
|
;;; nnweb.el ends here
|