-;;; gnus-util.el --- utility functions for Gnus
-;; Copyright (C) 1996,97,98,99 Free Software Foundation, Inc.
+;;; gnus-util.el --- utility functions for Semi-gnus
+;; Copyright (C) 1996,97,98 Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
-;; Keywords: news
+;; Keywords: mail, news, MIME
;; This file is part of GNU Emacs.
(require 'custom)
(eval-when-compile (require 'cl))
(require 'nnheader)
+(require 'timezone)
(require 'message)
-(require 'time-date)
+(eval-when-compile
+ (when (locate-library "rmail")
+ (require 'rmail)))
(eval-and-compile
+ (autoload 'nnmail-date-to-time "nnmail")
(autoload 'rmail-insert-rmail-file-header "rmail")
(autoload 'rmail-count-new-messages "rmail")
(autoload 'rmail-show-message "rmail"))
(set symbol nil))
symbol))
+;; Avoid byte-compile warning.
+;; In Mule, this function will be redefined to `truncate-string',
+;; which takes 3 or 4 args.
+(defun gnus-truncate-string (str width &rest ignore)
+ (substring str 0 width))
+
;; Added by Geoffrey T. Dairiki <dairiki@u.washington.edu>. A safe way
;; to limit the length of a string. This function is necessary since
;; `(substr "abc" 0 30)' pukes with "Args out of range".
(when (gnus-buffer-exists-p buf)
(kill-buffer buf))))
-(fset 'gnus-point-at-bol
- (if (fboundp 'point-at-bol)
- 'point-at-bol
- 'line-beginning-position))
-
-(fset 'gnus-point-at-eol
- (if (fboundp 'point-at-eol)
- 'point-at-eol
- 'line-end-position))
+(if (fboundp 'point-at-bol)
+ (fset 'gnus-point-at-bol 'point-at-bol)
+ (defun gnus-point-at-bol ()
+ "Return point at the beginning of the line."
+ (let ((p (point)))
+ (beginning-of-line)
+ (prog1
+ (point)
+ (goto-char p)))))
+
+(if (fboundp 'point-at-eol)
+ (fset 'gnus-point-at-eol 'point-at-eol)
+ (defun gnus-point-at-eol ()
+ "Return point at the end of the line."
+ (let ((p (point)))
+ (end-of-line)
+ (prog1
+ (point)
+ (goto-char p)))))
(defun gnus-delete-first (elt list)
"Delete by side effect the first occurrence of ELT as a member of LIST."
;;; Time functions.
+(defun gnus-days-between (date1 date2)
+ ;; Return the number of days between date1 and date2.
+ (- (gnus-day-number date1) (gnus-day-number date2)))
+
+(defun gnus-day-number (date)
+ (let ((dat (mapcar (lambda (s) (and s (string-to-int s)) )
+ (timezone-parse-date date))))
+ (timezone-absolute-from-gregorian
+ (nth 1 dat) (nth 2 dat) (car dat))))
+
+(defun gnus-time-to-day (time)
+ "Convert TIME to day number."
+ (let ((tim (decode-time time)))
+ (timezone-absolute-from-gregorian
+ (nth 4 tim) (nth 3 tim) (nth 5 tim))))
+
+(defun gnus-encode-date (date)
+ "Convert DATE to internal time."
+ (let* ((parse (timezone-parse-date date))
+ (date (mapcar (lambda (d) (and d (string-to-int d))) parse))
+ (time (mapcar 'string-to-int (timezone-parse-time (aref parse 3)))))
+ (encode-time (caddr time) (cadr time) (car time)
+ (caddr date) (cadr date) (car date)
+ (* 60 (timezone-zone-to-minute (nth 4 date))))))
+
+(defun gnus-time-minus (t1 t2)
+ "Subtract two internal times."
+ (let ((borrow (< (cadr t1) (cadr t2))))
+ (list (- (car t1) (car t2) (if borrow 1 0))
+ (- (+ (if borrow 65536 0) (cadr t1)) (cadr t2)))))
+
+(defun gnus-time-less (t1 t2)
+ "Say whether time T1 is less than time T2."
+ (or (< (car t1) (car t2))
+ (and (= (car t1) (car t2))
+ (< (nth 1 t1) (nth 1 t2)))))
+
(defun gnus-file-newer-than (file date)
(let ((fdate (nth 5 (file-attributes file))))
(or (> (car fdate) (car date))
(defun gnus-dd-mmm (messy-date)
"Return a string like DD-MMM from a big messy string."
- (format-time-string "%d-%b" (safe-date-to-time messy-date)))
+ (let ((datevec (ignore-errors (timezone-parse-date messy-date))))
+ (if (or (not datevec)
+ (string-equal "0" (aref datevec 1)))
+ "??-???"
+ (format "%2s-%s"
+ (condition-case ()
+ ;; Make sure leading zeroes are stripped.
+ (number-to-string (string-to-number (aref datevec 2)))
+ (error "??"))
+ (capitalize
+ (or (car
+ (nth (1- (string-to-number (aref datevec 1)))
+ timezone-months-assoc))
+ "???"))))))
(defmacro gnus-date-get-time (date)
"Convert DATE string to Emacs time.
'(0 0)
(or (get-text-property 0 'gnus-time d)
;; or compute the value...
- (let ((time (safe-date-to-time d)))
+ (let ((time (nnmail-date-to-time d)))
;; and store it back in the string.
(put-text-property 0 1 'gnus-time time d)
time)))))
ids))
(nreverse ids)))
-(defsubst gnus-parent-id (references &optional n)
+(defun gnus-parent-id (references &optional n)
"Return the last Message-ID in REFERENCES.
If N, return the Nth ancestor instead."
(when references
(cons (and (numberp event) event) event)))
(defun gnus-sortable-date (date)
- "Make string suitable for sorting from DATE."
- (gnus-time-iso8601 (date-to-time date)))
+ "Make sortable string by string-lessp from DATE.
+Timezone package is used."
+ (condition-case ()
+ (progn
+ (setq date (inline (timezone-fix-time
+ date nil
+ (aref (inline (timezone-parse-date date)) 4))))
+ (inline
+ (timezone-make-sortable-date
+ (aref date 0) (aref date 1) (aref date 2)
+ (inline
+ (timezone-make-time-string
+ (aref date 3) (aref date 4) (aref date 5))))))
+ (error "")))
(defun gnus-copy-file (file &optional to)
"Copy FILE to TO."
(erase-buffer))
(set-buffer (gnus-get-buffer-create gnus-work-buffer))
(kill-all-local-variables)
- (mm-enable-multibyte)))
+ (buffer-disable-undo (current-buffer))))
(defmacro gnus-group-real-name (group)
"Find the real name of a foreign newsgroup."
(defun gnus-make-sort-function (funs)
"Return a composite sort condition based on the functions in FUNC."
(cond
- ;; Just a simple function.
- ((gnus-functionp funs) funs)
- ;; No functions at all.
+ ((not (listp funs)) funs)
((null funs) funs)
- ;; A list of functions.
- ((or (cdr funs)
- (listp (car funs)))
+ ((cdr funs)
`(lambda (t1 t2)
,(gnus-make-sort-function-1 (reverse funs))))
- ;; A list containing just one function.
(t
(car funs))))
(defun gnus-make-sort-function-1 (funs)
"Return a composite sort condition based on the functions in FUNC."
- (let ((function (car funs))
- (first 't1)
- (last 't2))
- (when (consp function)
- (cond
- ;; Reversed spec.
- ((eq (car function) 'not)
- (setq function (cadr function)
- first 't2
- last 't1))
- ((gnus-functionp function)
- )
- (t
- (error "Invalid sort spec: %s" function))))
- (if (cdr funs)
- `(or (,function ,first ,last)
- (and (not (,function ,last ,first))
- ,(gnus-make-sort-function-1 (cdr funs))))
- `(,function ,first ,last))))
+ (if (cdr funs)
+ `(or (,(car funs) t1 t2)
+ (and (not (,(car funs) t2 t1))
+ ,(gnus-make-sort-function-1 (cdr funs))))
+ `(,(car funs) t1 t2)))
(defun gnus-turn-off-edit-menu (type)
"Turn off edit menu in `gnus-TYPE-mode-map'."
;; Write the buffer.
(write-region (point-min) (point-max) file nil 'quietly))
+(defun gnus-write-buffer-as-binary (file)
+ "Write the current buffer's contents to FILE without code conversion."
+ ;; Make sure the directory exists.
+ (gnus-make-directory (file-name-directory file))
+ ;; Write the buffer.
+ (write-region-as-binary (point-min) (point-max) file nil 'quietly))
+
+(defun gnus-write-buffer-as-coding-system (coding-system file)
+ "Write the current buffer's contents to FILE with code conversion."
+ ;; Make sure the directory exists.
+ (gnus-make-directory (file-name-directory file))
+ ;; Write the buffer.
+ (write-region-as-coding-system
+ coding-system (point-min) (point-max) file nil 'quietly))
+
(defun gnus-delete-file (file)
"Delete FILE if it exists."
(when (file-exists-p file)
(setq string (replace-match "" t t string)))
string)
-(defsubst gnus-put-text-property-excluding-newlines (beg end prop val)
+(defun gnus-put-text-property-excluding-newlines (beg end prop val)
"The same as `put-text-property', but don't put this prop on any newlines in the region."
(save-match-data
(save-excursion
(gnus-put-text-property
b (setq b (next-single-property-change b 'gnus-face nil end))
prop val)))))
-
+
;;; Protected and atomic operations. dmoore@ucsd.edu 21.11.1996
;;; The primary idea here is to try to protect internal datastructures
;;; from becoming corrupted when the user hits C-g, or if a hook or
(save-excursion
(set-buffer file-buffer)
(let ((require-final-newline nil))
- (gnus-write-buffer filename)))
+ (gnus-write-buffer-as-binary filename)))
(kill-buffer file-buffer))
(error "Output file does not exist")))
(set-buffer tmpbuf)
(insert "\n"))
(insert "\n"))
(goto-char (point-max))
- (append-to-file (point-min) (point-max) filename)))
+ (write-region-as-binary (point-min) (point-max)
+ filename 'append)))
;; File has been visited, in buffer OUTBUF.
(set-buffer outbuf)
(let ((buffer-read-only nil))
(unwind-protect
(apply 'run-hooks funcs)
(set-buffer buf))))
-
+
;;;
;;; .netrc and .authinforc parsing
;;;
+(defvar gnus-netrc-syntax-table
+ (let ((table (copy-syntax-table text-mode-syntax-table)))
+ (modify-syntax-entry ?@ "w" table)
+ (modify-syntax-entry ?- "w" table)
+ (modify-syntax-entry ?_ "w" table)
+ (modify-syntax-entry ?! "w" table)
+ (modify-syntax-entry ?. "w" table)
+ (modify-syntax-entry ?, "w" table)
+ (modify-syntax-entry ?: "w" table)
+ (modify-syntax-entry ?\; "w" table)
+ (modify-syntax-entry ?% "w" table)
+ (modify-syntax-entry ?) "w" table)
+ (modify-syntax-entry ?( "w" table)
+ table)
+ "Syntax table when parsing .netrc files.")
+
(defun gnus-parse-netrc (file)
"Parse FILE and return an list of all entries in the file."
- (when (file-exists-p file)
- (with-temp-buffer
+ (if (not (file-exists-p file))
+ ()
+ (save-excursion
(let ((tokens '("machine" "default" "login"
"password" "account" "macdef" "force"))
alist elem result pair)
- (insert-file-contents file)
- (goto-char (point-min))
- ;; Go through the file, line by line.
- (while (not (eobp))
- (narrow-to-region (point) (gnus-point-at-eol))
- ;; For each line, get the tokens and values.
- (while (not (eobp))
- (skip-chars-forward "\t ")
- ;; Skip lines that begin with a "#".
- (if (eq (char-after) ?#)
- (goto-char (point-max))
- (unless (eobp)
- (setq elem (buffer-substring
- (point) (progn (skip-chars-forward "^\t ")
- (point))))
- (cond
- ((equal elem "macdef")
- ;; We skip past the macro definition.
- (widen)
- (while (and (zerop (forward-line 1))
- (looking-at "$")))
- (narrow-to-region (point) (point)))
- ((member elem tokens)
- ;; Tokens that don't have a following value are ignored,
- ;; except "default".
- (when (and pair (or (cdr pair)
- (equal (car pair) "default")))
- (push pair alist))
- (setq pair (list elem)))
- (t
- ;; Values that haven't got a preceding token are ignored.
- (when pair
- (setcdr pair elem)
- (push pair alist)
- (setq pair nil)))))))
- (when alist
- (push (nreverse alist) result))
- (setq alist nil
- pair nil)
- (widen)
- (forward-line 1))
- (nreverse result)))))
+ (nnheader-set-temp-buffer " *netrc*")
+ (unwind-protect
+ (progn
+ (set-syntax-table gnus-netrc-syntax-table)
+ (insert-file-contents file)
+ (goto-char (point-min))
+ ;; Go through the file, line by line.
+ (while (not (eobp))
+ (narrow-to-region (point) (gnus-point-at-eol))
+ ;; For each line, get the tokens and values.
+ (while (not (eobp))
+ (skip-chars-forward "\t ")
+ (unless (eobp)
+ (setq elem (buffer-substring
+ (point) (progn (forward-sexp 1) (point))))
+ (cond
+ ((equal elem "macdef")
+ ;; We skip past the macro definition.
+ (widen)
+ (while (and (zerop (forward-line 1))
+ (looking-at "$")))
+ (narrow-to-region (point) (point)))
+ ((member elem tokens)
+ ;; Tokens that don't have a following value are ignored,
+ ;; except "default".
+ (when (and pair (or (cdr pair)
+ (equal (car pair) "default")))
+ (push pair alist))
+ (setq pair (list elem)))
+ (t
+ ;; Values that haven't got a preceding token are ignored.
+ (when pair
+ (setcdr pair elem)
+ (push pair alist)
+ (setq pair nil))))))
+ (if alist
+ (push (nreverse alist) result))
+ (setq alist nil
+ pair nil)
+ (widen)
+ (forward-line 1))
+ (nreverse result))
+ (kill-buffer " *netrc*"))))))
(defun gnus-netrc-machine (list machine)
"Return the netrc values from LIST for MACHINE or for the default entry."
;;; Various
-(defvar gnus-group-buffer) ; Compiler directive
+(defvar gnus-group-buffer) ; Compiler directive
(defun gnus-alive-p ()
"Say whether Gnus is running or not."
(and (boundp 'gnus-group-buffer)
(setq alist (delq entry alist)))
alist))
-(defmacro gnus-pull (key alist &optional assoc-p)
+(defmacro gnus-pull (key alist)
"Modify ALIST to be without KEY."
(unless (symbolp alist)
(error "Not a symbol: %s" alist))
- (let ((fun (if assoc-p 'assoc 'assq)))
- `(setq ,alist (delq (,fun ,key ,alist) ,alist))))
+ `(setq ,alist (delq (assq ,key ,alist) ,alist)))
(defun gnus-globalify-regexp (re)
"Returns a regexp that matches a whole line, iff RE matches a part of it."
re
(unless (string-match "\\$$" re) ".*$")))
-(defun gnus-set-window-start (&optional point)
- "Set the window start to POINT, or (point) if nil."
- (let ((win (get-buffer-window (current-buffer) t)))
- (when win
- (set-window-start win (or point (point))))))
-
-(defun gnus-annotation-in-region-p (b e)
- (if (= b e)
- (eq (cadr (memq 'gnus-undeletable (text-properties-at b))) t)
- (text-property-any b e 'gnus-undeletable t)))
-
-(defun gnus-or (&rest elems)
- "Return non-nil if any of the elements are non-nil."
- (catch 'found
- (while elems
- (when (pop elems)
- (throw 'found t)))))
-
-(defun gnus-and (&rest elems)
- "Return non-nil if all of the elements are non-nil."
- (catch 'found
- (while elems
- (unless (pop elems)
- (throw 'found nil)))
- t))
-
-(defun gnus-write-active-file (file hashtb)
- (with-temp-file file
- (mapatoms
- (lambda (sym)
- (when (and sym
- (boundp sym)
- (symbol-value sym))
- (insert (format "%s %d %d y\n"
- (symbol-name sym) (cdr (symbol-value sym))
- (car (symbol-value sym))))))
- hashtb)))
-
(provide 'gnus-util)
;;; gnus-util.el ends here
projects / elisp / gnus.git- / blobdiff