X-Git-Url: http://cgit.sxemacs.org/?a=blobdiff_plain;f=lisp%2Fgnus-util.el;h=9194c560a801256ce2ed11fc5fe725d90ff310a2;hb=d175c9f4a81f58bedefb25365eb889bfb62a393f;hp=3b11aae727e887be137d246f3e3c502adae3e9be;hpb=c1bc689888c18e12898bbc4c15161cf6618b12aa;p=gnus diff --git a/lisp/gnus-util.el b/lisp/gnus-util.el index 3b11aae72..9194c560a 100644 --- a/lisp/gnus-util.el +++ b/lisp/gnus-util.el @@ -1,5 +1,6 @@ ;;; gnus-util.el --- utility functions for Gnus -;; Copyright (C) 1996,97,98 Free Software Foundation, Inc. +;; Copyright (C) 1996, 1997, 1998, 1999, 2000 +;; Free Software Foundation, Inc. ;; Author: Lars Magne Ingebrigtsen ;; Keywords: news @@ -33,11 +34,10 @@ (require 'custom) (eval-when-compile (require 'cl)) (require 'nnheader) -(require 'timezone) -(require 'message) +(require 'time-date) (eval-and-compile - (autoload 'nnmail-date-to-time "nnmail") + (autoload 'message-fetch-field "message") (autoload 'rmail-insert-rmail-file-header "rmail") (autoload 'rmail-count-new-messages "rmail") (autoload 'rmail-show-message "rmail")) @@ -75,9 +75,6 @@ (set symbol nil)) symbol)) -(defun gnus-truncate-string (str width) - (substring str 0 width)) - ;; Added by Geoffrey T. Dairiki . 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". @@ -106,25 +103,15 @@ (when (gnus-buffer-exists-p buf) (kill-buffer buf)))) -(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))))) +(defalias 'gnus-point-at-bol + (if (fboundp 'point-at-bol) + 'point-at-bol + 'line-beginning-position)) + +(defalias 'gnus-point-at-eol + (if (fboundp 'point-at-eol) + 'point-at-eol + 'line-end-position)) (defun gnus-delete-first (elt list) "Delete by side effect the first occurrence of ELT as a member of LIST." @@ -178,8 +165,8 @@ (and (string-match "(.*" from) (setq name (substring from (1+ (match-beginning 0)) (match-end 0))))) - ;; Fix by Hallvard B Furuseth . - (list (or name from) (or address from)))) + (list (if (string= name "") nil name) (or address from)))) + (defun gnus-fetch-field (field) "Return the value of the header FIELD of current article." @@ -231,43 +218,6 @@ ;;; 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)) @@ -342,20 +292,9 @@ (defun gnus-dd-mmm (messy-date) "Return a string like DD-MMM from a big messy string." - (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)) - "???")))))) + (condition-case () + (format-time-string "%d-%b" (safe-date-to-time messy-date)) + (error " - "))) (defmacro gnus-date-get-time (date) "Convert DATE string to Emacs time. @@ -366,17 +305,17 @@ Cache the result as a text property stored in DATE." '(0 0) (or (get-text-property 0 'gnus-time d) ;; or compute the value... - (let ((time (nnmail-date-to-time d))) + (let ((time (safe-date-to-time d))) ;; and store it back in the string. (put-text-property 0 1 'gnus-time time d) time))))) (defsubst gnus-time-iso8601 (time) - "Return a string of TIME in YYMMDDTHHMMSS format." + "Return a string of TIME in YYYYMMDDTHHMMSS format." (format-time-string "%Y%m%dT%H%M%S" time)) (defun gnus-date-iso8601 (date) - "Convert the DATE to YYMMDDTHHMMSS." + "Convert the DATE to YYYYMMDDTHHMMSS." (condition-case () (gnus-time-iso8601 (gnus-date-get-time date)) (error ""))) @@ -450,7 +389,7 @@ jabbering all the time." ids)) (nreverse ids))) -(defun gnus-parent-id (references &optional n) +(defsubst gnus-parent-id (references &optional n) "Return the last Message-ID in REFERENCES. If N, return the Nth ancestor instead." (when references @@ -497,20 +436,8 @@ If N, return the Nth ancestor instead." (cons (and (numberp event) event) event))) (defun gnus-sortable-date (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 ""))) + "Make string suitable for sorting from DATE." + (gnus-time-iso8601 (date-to-time date))) (defun gnus-copy-file (file &optional to) "Copy FILE to TO." @@ -524,14 +451,6 @@ Timezone package is used." (file-name-nondirectory file)))) (copy-file file to)) -(defun gnus-kill-all-overlays () - "Delete all overlays in the current buffer." - (let* ((overlayss (overlay-lists)) - (buffer-read-only nil) - (overlays (delq nil (nconc (car overlayss) (cdr overlayss))))) - (while overlays - (delete-overlay (pop overlays))))) - (defvar gnus-work-buffer " *gnus work*") (defun gnus-set-work-buffer () @@ -542,7 +461,7 @@ Timezone package is used." (erase-buffer)) (set-buffer (gnus-get-buffer-create gnus-work-buffer)) (kill-all-local-variables) - (buffer-disable-undo (current-buffer)))) + (mm-enable-multibyte))) (defmacro gnus-group-real-name (group) "Find the real name of a foreign newsgroup." @@ -554,21 +473,41 @@ Timezone package is used." (defun gnus-make-sort-function (funs) "Return a composite sort condition based on the functions in FUNC." (cond - ((not (listp funs)) funs) + ;; Just a simple function. + ((gnus-functionp funs) funs) + ;; No functions at all. ((null funs) funs) - ((cdr funs) + ;; A list of functions. + ((or (cdr funs) + (listp (car 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." - (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))) + (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) + ;; Do nothing. + ) + (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)))) (defun gnus-turn-off-edit-menu (type) "Turn off edit menu in `gnus-TYPE-mode-map'." @@ -592,17 +531,19 @@ Bind `print-quoted' and `print-readably' to t while printing." (defun gnus-make-directory (directory) "Make DIRECTORY (and all its parents) if it doesn't exist." - (when (and directory - (not (file-exists-p directory))) - (make-directory directory t)) + (let ((file-name-coding-system nnmail-pathname-coding-system)) + (when (and directory + (not (file-exists-p directory))) + (make-directory directory t))) t) (defun gnus-write-buffer (file) "Write the current buffer's contents to FILE." ;; Make sure the directory exists. (gnus-make-directory (file-name-directory file)) - ;; Write the buffer. - (write-region (point-min) (point-max) file nil 'quietly)) + (let ((file-name-coding-system nnmail-pathname-coding-system)) + ;; Write the buffer. + (write-region (point-min) (point-max) file nil 'quietly))) (defun gnus-delete-file (file) "Delete FILE if it exists." @@ -615,13 +556,13 @@ Bind `print-quoted' and `print-readably' to t while printing." (setq string (replace-match "" t t string))) string) -(defun gnus-put-text-property-excluding-newlines (beg end prop val) +(defsubst 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 (save-restriction (goto-char beg) - (while (re-search-forward "[ \t]*\n" end 'move) + (while (re-search-forward gnus-emphasize-whitespace-regexp end 'move) (gnus-put-text-property beg (match-beginning 0) prop val) (setq beg (point))) (gnus-put-text-property beg (point) prop val))))) @@ -637,7 +578,7 @@ Bind `print-quoted' and `print-readably' to t while printing." (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 @@ -723,7 +664,7 @@ with potentially long computations." (setq filename (expand-file-name filename)) (setq rmail-default-rmail-file filename) (let ((artbuf (current-buffer)) - (tmpbuf (gnus-get-buffer-create " *Gnus-output*"))) + (tmpbuf (get-buffer-create " *Gnus-output*"))) (save-excursion (or (get-file-buffer filename) (file-exists-p filename) @@ -734,7 +675,8 @@ with potentially long computations." (save-excursion (set-buffer file-buffer) (rmail-insert-rmail-file-header) - (let ((require-final-newline nil)) + (let ((require-final-newline nil) + (coding-system-for-write mm-text-coding-system)) (gnus-write-buffer filename))) (kill-buffer file-buffer)) (error "Output file does not exist"))) @@ -745,7 +687,7 @@ with potentially long computations." ;; Decide whether to append to a file or to an Emacs buffer. (let ((outbuf (get-file-buffer filename))) (if (not outbuf) - (append-to-file (point-min) (point-max) filename) + (mm-append-to-file (point-min) (point-max) filename) ;; File has been visited, in buffer OUTBUF. (set-buffer outbuf) (let ((buffer-read-only nil) @@ -759,9 +701,12 @@ with potentially long computations." (when msg (goto-char (point-min)) (widen) - (search-backward "\^_") - (narrow-to-region (point) (point-max)) - (goto-char (1+ (point-min))) + (search-backward "\n\^_") + (narrow-to-region (point) (point-max)) + (rmail-count-new-messages t) + (when (rmail-summary-exists) + (rmail-select-summary + (rmail-update-summary))) (rmail-count-new-messages t) (rmail-show-message msg)) (save-buffer))))) @@ -771,7 +716,7 @@ with potentially long computations." "Append the current article to a mail file named FILENAME." (setq filename (expand-file-name filename)) (let ((artbuf (current-buffer)) - (tmpbuf (gnus-get-buffer-create " *Gnus-output*"))) + (tmpbuf (get-buffer-create " *Gnus-output*"))) (save-excursion ;; Create the file, if it doesn't exist. (when (and (not (get-file-buffer filename)) @@ -782,7 +727,8 @@ with potentially long computations." (let ((file-buffer (create-file-buffer filename))) (save-excursion (set-buffer file-buffer) - (let ((require-final-newline nil)) + (let ((require-final-newline nil) + (coding-system-for-write mm-text-coding-system)) (gnus-write-buffer filename))) (kill-buffer file-buffer)) (error "Output file does not exist"))) @@ -810,7 +756,7 @@ with potentially long computations." (insert "\n")) (insert "\n")) (goto-char (point-max)) - (append-to-file (point-min) (point-max) filename))) + (mm-append-to-file (point-min) (point-max) filename))) ;; File has been visited, in buffer OUTBUF. (set-buffer outbuf) (let ((buffer-read-only nil)) @@ -835,8 +781,7 @@ with potentially long computations." (defun gnus-map-function (funs arg) "Applies the result of the first function in FUNS to the second, and so on. ARG is passed to the first function." - (let ((myfuns funs) - (myarg arg)) + (let ((myfuns funs)) (while myfuns (setq arg (funcall (pop myfuns) arg))) arg)) @@ -847,89 +792,89 @@ ARG is passed to the first function." (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." - (if (not (file-exists-p file)) - () - (save-excursion + (when (file-exists-p file) + (with-temp-buffer (let ((tokens '("machine" "default" "login" - "password" "account" "macdef" "force")) + "password" "account" "macdef" "force" + "port")) alist elem result pair) - (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 "$"))) - (narrow-to-region (point) (point))) - ((member elem tokens) - ;; Tokens that don't have a following value are ignored, - ;; except "default". - (when (and pair (or (cdr pair) - (equal (car pair) "default"))) - (push pair alist)) - (setq pair (list elem))) - (t - ;; Values that haven't got a preceding token are ignored. - (when pair - (setcdr pair elem) - (push pair alist) - (setq pair nil)))))) - (if alist - (push (nreverse alist) result)) - (setq alist nil - pair nil) - (widen) - (forward-line 1)) - (nreverse result)) - (kill-buffer " *netrc*")))))) - -(defun gnus-netrc-machine (list machine) - "Return the netrc values from LIST for MACHINE or for the default entry." - (let ((rest list)) - (while (and list - (not (equal (cdr (assoc "machine" (car list))) machine))) + (insert-file-contents file) + (goto-char (point-min)) + ;; Go through the file, line by line. + (while (not (eobp)) + (narrow-to-region (point) (gnus-point-at-eol)) + ;; For each line, get the tokens and values. + (while (not (eobp)) + (skip-chars-forward "\t ") + ;; Skip lines that begin with a "#". + (if (eq (char-after) ?#) + (goto-char (point-max)) + (unless (eobp) + (setq elem + (if (= (following-char) ?\") + (read (current-buffer)) + (buffer-substring + (point) (progn (skip-chars-forward "^\t ") + (point))))) + (cond + ((equal elem "macdef") + ;; We skip past the macro definition. + (widen) + (while (and (zerop (forward-line 1)) + (looking-at "$"))) + (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))))) + +(defun gnus-netrc-machine (list machine &optional port defaultport) + "Return the netrc values from LIST for MACHINE or for the default entry. +If PORT specified, only return entries with matching port tokens. +Entries without port tokens default to DEFAULTPORT." + (let ((rest list) + result) + (while list + (when (equal (cdr (assoc "machine" (car list))) machine) + (push (car list) result)) (pop list)) - (car (or list - (progn (while (and rest (not (assoc "default" (car rest)))) - (pop rest)) - rest))))) + (unless result + ;; No machine name matches, so we look for default entries. + (while rest + (when (assoc "default" (car rest)) + (push (car rest) result)) + (pop rest))) + (when result + (setq result (nreverse result)) + (while (and result + (not (equal (or port defaultport "nntp") + (or (gnus-netrc-get (car result) "port") + defaultport "nntp")))) + (pop result)) + (car result)))) (defun gnus-netrc-get (alist type) "Return the value of token TYPE from ALIST." @@ -937,6 +882,7 @@ ARG is passed to the first function." ;;; Various +(defvar gnus-group-buffer) ; Compiler directive (defun gnus-alive-p () "Say whether Gnus is running or not." (and (boundp 'gnus-group-buffer) @@ -969,11 +915,12 @@ ARG is passed to the first function." (setq alist (delq entry alist))) alist)) -(defmacro gnus-pull (key alist) +(defmacro gnus-pull (key alist &optional assoc-p) "Modify ALIST to be without KEY." (unless (symbolp alist) (error "Not a symbol: %s" alist)) - `(setq ,alist (delq (assq ,key ,alist) ,alist))) + (let ((fun (if assoc-p 'assoc 'assq))) + `(setq ,alist (delq (,fun ,key ,alist) ,alist)))) (defun gnus-globalify-regexp (re) "Returns a regexp that matches a whole line, iff RE matches a part of it." @@ -981,6 +928,90 @@ ARG is passed to the first function." 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 &optional full-names) + (let ((coding-system-for-write nnmail-active-file-coding-system)) + (with-temp-file file + (mapatoms + (lambda (sym) + (when (and sym + (boundp sym) + (symbol-value sym)) + (insert (format "%S %d %d y\n" + (if full-names + sym + (intern (gnus-group-real-name (symbol-name sym)))) + (or (cdr (symbol-value sym)) + (car (symbol-value sym))) + (car (symbol-value sym)))))) + hashtb) + (goto-char (point-max)) + (while (search-backward "\\." nil t) + (delete-char 1))))) + +(if (fboundp 'union) + (defalias 'gnus-union 'union) + (defun gnus-union (l1 l2) + "Set union of lists L1 and L2." + (cond ((null l1) l2) + ((null l2) l1) + ((equal l1 l2) l1) + (t + (or (>= (length l1) (length l2)) + (setq l1 (prog1 l2 (setq l2 l1)))) + (while l2 + (or (member (car l2) l1) + (push (car l2) l1)) + (pop l2)) + l1)))) + +(defun gnus-add-text-properties-when + (property value start end properties &optional object) + "Like `gnus-add-text-properties', only applied on where PROPERTY is VALUE." + (let (point) + (while (and start + (setq point (text-property-not-all start end property value))) + (gnus-add-text-properties start point properties object) + (setq start (text-property-any point end property value))) + (if start + (gnus-add-text-properties start end properties object)))) + +(defun gnus-remove-text-properties-when + (property value start end properties &optional object) + "Like `remove-text-properties', only applied on where PROPERTY is VALUE." + (let (point) + (while (and start + (setq point (text-property-not-all start end property value))) + (remove-text-properties start point properties object) + (setq start (text-property-any point end property value))) + (if start + (remove-text-properties start end properties object)))) + (provide 'gnus-util) ;;; gnus-util.el ends here