-;;; nnheader.el --- header access macros for Gnus and its backends
-;; Copyright (C) 1987,88,89,90,93,94,95,96,97,98 Free Software Foundation, Inc.
+;;; nnheader.el --- header access macros for Chaos and its backends
+;; Copyright (C) 1987-1990,1993-1999 Free Software Foundation, Inc.
;; Author: Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
-;; Lars Magne Ingebrigtsen <larsi@gnus.org>
-;; Keywords: news
+;; Lars Magne Ingebrigtsen <larsi@gnus.org>
+;; MORIOKA Tomohiko <morioka@jaist.ac.jp>
+;; Keywords: mail, news, MIME
;; This file is part of GNU Emacs.
(eval-when-compile (require 'cl))
(require 'mail-utils)
+(require 'mime)
(defvar nnheader-max-head-length 4096
"*Max length of the head of articles.")
(defvar nnheader-file-name-translation-alist nil
"*Alist that says how to translate characters in file names.
-For instance, if \":\" is illegal as a file character in file names
+For instance, if \":\" is invalid as a file character in file names
on your system, you could say something like:
\(setq nnheader-file-name-translation-alist '((?: . ?_)))")
;;; Header access macros.
+(require 'mmgnus)
+
(defmacro mail-header-number (header)
"Return article number in HEADER."
- `(aref ,header 0))
+ `(mime-entity-location-internal ,header))
(defmacro mail-header-set-number (header number)
"Set article number of HEADER to NUMBER."
- `(aset ,header 0 ,number))
-
-(defmacro mail-header-subject (header)
- "Return subject string in HEADER."
- `(aref ,header 1))
-
-(defmacro mail-header-set-subject (header subject)
- "Set article subject of HEADER to SUBJECT."
- `(aset ,header 1 ,subject))
-
-(defmacro mail-header-from (header)
- "Return author string in HEADER."
- `(aref ,header 2))
-
-(defmacro mail-header-set-from (header from)
- "Set article author of HEADER to FROM."
- `(aset ,header 2 ,from))
-
-(defmacro mail-header-date (header)
- "Return date in HEADER."
- `(aref ,header 3))
-
-(defmacro mail-header-set-date (header date)
- "Set article date of HEADER to DATE."
- `(aset ,header 3 ,date))
+ `(mime-entity-set-location-internal ,header ,number))
-(defalias 'mail-header-message-id 'mail-header-id)
-(defmacro mail-header-id (header)
- "Return Id in HEADER."
- `(aref ,header 4))
+(defalias 'mail-header-subject 'mime-gnus-entity-subject-internal)
+(defalias 'mail-header-set-subject 'mime-gnus-entity-set-subject-internal)
-(defalias 'mail-header-set-message-id 'mail-header-set-id)
-(defmacro mail-header-set-id (header id)
- "Set article Id of HEADER to ID."
- `(aset ,header 4 ,id))
+(defalias 'mail-header-from 'mime-gnus-entity-from-internal)
+(defalias 'mail-header-set-from 'mime-gnus-entity-set-from-internal)
-(defmacro mail-header-references (header)
- "Return references in HEADER."
- `(aref ,header 5))
+(defalias 'mail-header-date 'mime-gnus-entity-date-internal)
+(defalias 'mail-header-set-date 'mime-gnus-entity-set-date-internal)
-(defmacro mail-header-set-references (header ref)
- "Set article references of HEADER to REF."
- `(aset ,header 5 ,ref))
+(defalias 'mail-header-message-id 'mime-gnus-entity-id-internal)
+(defalias 'mail-header-id 'mime-gnus-entity-id-internal)
+(defalias 'mail-header-set-message-id 'mime-gnus-entity-set-id-internal)
+(defalias 'mail-header-set-id 'mime-gnus-entity-set-id-internal)
-(defmacro mail-header-chars (header)
- "Return number of chars of article in HEADER."
- `(aref ,header 6))
+(defalias 'mail-header-references 'mime-gnus-entity-references-internal)
+(defalias 'mail-header-set-references
+ 'mime-gnus-entity-set-references-internal)
-(defmacro mail-header-set-chars (header chars)
- "Set number of chars in article of HEADER to CHARS."
- `(aset ,header 6 ,chars))
+(defalias 'mail-header-chars 'mime-gnus-entity-chars-internal)
+(defalias 'mail-header-set-chars 'mime-gnus-entity-set-chars-internal)
-(defmacro mail-header-lines (header)
- "Return lines in HEADER."
- `(aref ,header 7))
+(defalias 'mail-header-lines 'mime-gnus-entity-lines-internal)
+(defalias 'mail-header-set-lines 'mime-gnus-entity-set-lines-internal)
-(defmacro mail-header-set-lines (header lines)
- "Set article lines of HEADER to LINES."
- `(aset ,header 7 ,lines))
+(defalias 'mail-header-xref 'mime-gnus-entity-xref-internal)
+(defalias 'mail-header-set-xref 'mime-gnus-entity-set-xref-internal)
-(defmacro mail-header-xref (header)
- "Return xref string in HEADER."
- `(aref ,header 8))
+(defalias 'nnheader-decode-subject
+ (mime-find-field-decoder 'Subject 'nov))
+(defalias 'nnheader-decode-from
+ (mime-find-field-decoder 'From 'nov))
-(defmacro mail-header-set-xref (header xref)
- "Set article xref of HEADER to xref."
- `(aset ,header 8 ,xref))
+(defsubst make-full-mail-header (&optional number subject from date id
+ references chars lines xref)
+ "Create a new mail header structure initialized with the parameters given."
+ (luna-make-entity (mm-expand-class-name 'gnus)
+ :location number
+ :subject (if subject
+ (nnheader-decode-subject subject))
+ :from (if from
+ (nnheader-decode-from from))
+ :date date
+ :id id
+ :references references
+ :chars chars
+ :lines lines
+ :xref xref
+ :original-header (list (cons 'Subject subject)
+ (cons 'From from)))
+ ;;(make-mime-entity-internal
+ ;; 'gnus number
+ ;; nil
+ ;; nil nil nil
+ ;; (if subject
+ ;; (nnheader-decode-subject subject)
+ ;; )
+ ;; (if from
+ ;; (nnheader-decode-from from)
+ ;; )
+ ;; date id references
+ ;; chars lines xref
+ ;; (list (cons 'Subject subject)
+ ;; (cons 'From from)))
+ )
+
+(defsubst make-full-mail-header-from-decoded-header
+ (&optional number subject from date id references chars lines xref)
+ "Create a new mail header structure initialized with the parameters given."
+ (luna-make-entity (mm-expand-class-name 'gnus)
+ :location number
+ :subject subject
+ :from from
+ :date date
+ :id id
+ :references references
+ :chars chars
+ :lines lines
+ :xref xref)
+ ;;(make-mime-entity-internal
+ ;; 'gnus number
+ ;; nil
+ ;; nil nil nil
+ ;; subject
+ ;; from
+ ;; date id references
+ ;; chars lines xref)
+ )
(defun make-mail-header (&optional init)
"Create a new mail header structure initialized with INIT."
- (make-vector 9 init))
-
-(defun make-full-mail-header (&optional number subject from date id
- references chars lines xref)
- "Create a new mail header structure initialized with the parameters given."
- (vector number subject from date id references chars lines xref))
+ (make-full-mail-header init init init init init
+ init init init init))
;; fake message-ids: generation and detection
;; about twice as fast, even though it looks messier. You
;; can't have everything, I guess. Speed and elegance
;; don't always go hand in hand.
- (vector
+ (make-full-mail-header
;; Number.
(if naked
(progn
(defmacro nnheader-nov-read-integer ()
'(prog1
- (if (= (following-char) ?\t)
+ (if (eq (char-after) ?\t)
0
(let ((num (ignore-errors (read (current-buffer)))))
(if (numberp num) num 0)))
- (or (eobp) (forward-char 1))))
+ (unless (eobp)
+ (search-forward "\t" eol 'move))))
;; (defvar nnheader-none-counter 0)
(defun nnheader-parse-nov ()
(let ((eol (gnus-point-at-eol)))
- (vector
+ (make-full-mail-header
(nnheader-nov-read-integer) ; number
(nnheader-nov-field) ; subject
(nnheader-nov-field) ; from
(nnheader-nov-field) ; refs
(nnheader-nov-read-integer) ; chars
(nnheader-nov-read-integer) ; lines
- (if (= (following-char) ?\n)
+ (if (eq (char-after) ?\n)
nil
(nnheader-nov-field)) ; misc
)))
(princ (mail-header-number header) (current-buffer))
(insert
"\t"
- (or (mail-header-subject header) "(none)") "\t"
- (or (mail-header-from header) "(nobody)") "\t"
+ (or (mime-fetch-field 'Subject header) "(none)") "\t"
+ (or (mime-fetch-field 'From header) "(nobody)") "\t"
(or (mail-header-date header) "") "\t"
(or (mail-header-id header)
(nnmail-message-id))
(beginning-of-line)
(eq num article)))
+(defun nnheader-retrieve-headers-from-directory* (articles
+ directory dependencies
+ &optional
+ fetch-old force-new large
+ backend)
+ (with-temp-buffer
+ (let* ((file nil)
+ (number (length articles))
+ (count 0)
+ (pathname-coding-system 'binary)
+ (case-fold-search t)
+ (cur (current-buffer))
+ article
+ headers header id end ref in-reply-to lines chars ctype)
+ ;; We don't support fetching by Message-ID.
+ (if (stringp (car articles))
+ 'headers
+ (while articles
+ (when (and (file-exists-p
+ (setq file (expand-file-name
+ (int-to-string
+ (setq article (pop articles)))
+ directory)))
+ (not (file-directory-p file)))
+ (erase-buffer)
+ (nnheader-insert-head file)
+ (save-restriction
+ (std11-narrow-to-header)
+ (setq
+ header
+ (make-full-mail-header
+ ;; Number.
+ article
+ ;; Subject.
+ (or (std11-fetch-field "Subject")
+ "(none)")
+ ;; From.
+ (or (std11-fetch-field "From")
+ "(nobody)")
+ ;; Date.
+ (or (std11-fetch-field "Date")
+ "")
+ ;; Message-ID.
+ (progn
+ (goto-char (point-min))
+ (setq id (if (re-search-forward
+ "^Message-ID: *\\(<[^\n\t> ]+>\\)" nil t)
+ ;; We do it this way to make sure the Message-ID
+ ;; is (somewhat) syntactically valid.
+ (buffer-substring (match-beginning 1)
+ (match-end 1))
+ ;; If there was no message-id, we just fake one
+ ;; to make subsequent routines simpler.
+ (nnheader-generate-fake-message-id))))
+ ;; References.
+ (progn
+ (goto-char (point-min))
+ (if (search-forward "\nReferences: " nil t)
+ (progn
+ (setq end (point))
+ (prog1
+ (buffer-substring (match-end 0) (std11-field-end))
+ (setq ref
+ (buffer-substring
+ (progn
+ ;; (end-of-line)
+ (search-backward ">" end t)
+ (1+ (point)))
+ (progn
+ (search-backward "<" end t)
+ (point))))))
+ ;; Get the references from the in-reply-to header if there
+ ;; were no references and the in-reply-to header looks
+ ;; promising.
+ (if (and (search-forward "\nIn-Reply-To: " nil t)
+ (setq in-reply-to
+ (buffer-substring (match-end 0)
+ (std11-field-end)))
+ (string-match "<[^>]+>" in-reply-to))
+ (let (ref2)
+ (setq ref (substring in-reply-to (match-beginning 0)
+ (match-end 0)))
+ (while (string-match "<[^>]+>"
+ in-reply-to (match-end 0))
+ (setq ref2
+ (substring in-reply-to (match-beginning 0)
+ (match-end 0)))
+ (when (> (length ref2) (length ref))
+ (setq ref ref2)))
+ ref)
+ (setq ref nil))))
+ ;; Chars.
+ (progn
+ (goto-char (point-min))
+ (if (search-forward "\nChars: " nil t)
+ (if (numberp (setq chars (ignore-errors (read cur))))
+ chars 0)
+ 0))
+ ;; Lines.
+ (progn
+ (goto-char (point-min))
+ (if (search-forward "\nLines: " nil t)
+ (if (numberp (setq lines (ignore-errors (read cur))))
+ lines 0)
+ 0))
+ ;; Xref.
+ (std11-fetch-field "Xref")
+ ))
+ (goto-char (point-min))
+ (if (setq ctype (std11-fetch-field "Content-Type"))
+ (mime-entity-set-content-type-internal
+ header (mime-parse-Content-Type ctype)))
+ )
+ (when (setq header
+ (gnus-dependencies-add-header
+ header dependencies force-new))
+ (push header headers))
+ )
+ (setq count (1+ count))
+
+ (and large
+ (zerop (% count 20))
+ (nnheader-message 5 "%s: Receiving headers... %d%%"
+ backend
+ (/ (* count 100) number))))
+
+ (when large
+ (nnheader-message 5 "%s: Receiving headers...done" backend))
+
+ headers))))
+
+(defun nnheader-retrieve-headers-from-directory (articles
+ directory dependencies
+ &optional
+ fetch-old force-new large
+ backend)
+ (cons 'header
+ (nreverse (nnheader-retrieve-headers-from-directory*
+ articles directory dependencies
+ fetch-old force-new large backend))))
+
+(defun nnheader-get-newsgroup-headers-xover* (sequence
+ &optional
+ force-new dependencies
+ group)
+ "Parse the news overview data in the server buffer, and return a
+list of headers that match SEQUENCE (see `nntp-retrieve-headers')."
+ ;; Get the Xref when the users reads the articles since most/some
+ ;; NNTP servers do not include Xrefs when using XOVER.
+ ;; (setq gnus-article-internal-prepare-hook '(gnus-article-get-xrefs))
+ (let ((cur nntp-server-buffer)
+ number headers header)
+ (save-excursion
+ (set-buffer nntp-server-buffer)
+ ;; Allow the user to mangle the headers before parsing them.
+ (gnus-run-hooks 'gnus-parse-headers-hook)
+ (goto-char (point-min))
+ (while (not (eobp))
+ (condition-case ()
+ (while (and sequence (not (eobp)))
+ (setq number (read cur))
+ (while (and sequence
+ (< (car sequence) number))
+ (setq sequence (cdr sequence)))
+ (and sequence
+ (eq number (car sequence))
+ (progn
+ (setq sequence (cdr sequence))
+ (setq header (inline
+ (gnus-nov-parse-line
+ number dependencies force-new))))
+ (push header headers))
+ (forward-line 1))
+ (error
+ (gnus-error 4 "Strange nov line (%d)"
+ (count-lines (point-min) (point)))))
+ (forward-line 1))
+ ;; A common bug in inn is that if you have posted an article and
+ ;; then retrieves the active file, it will answer correctly --
+ ;; the new article is included. However, a NOV entry for the
+ ;; article may not have been generated yet, so this may fail.
+ ;; We work around this problem by retrieving the last few
+ ;; headers using HEAD.
+ headers)))
+
;; Various cruft the backends and Gnus need to communicate.
(defvar nntp-server-buffer nil)
(defun nnheader-insert-references (references message-id)
"Insert a References header based on REFERENCES and MESSAGE-ID."
(if (and (not references) (not message-id))
- () ; This is illegal, but not all articles have Message-IDs.
+ ;; This is invalid, but not all articles have Message-IDs.
+ ()
(mail-position-on-field "References")
(let ((begin (save-excursion (beginning-of-line) (point)))
(fill-column 78)
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