X-Git-Url: https://cgit.sxemacs.org/?a=blobdiff_plain;f=lisp%2Fgnus-util.el;h=0c22d4180b4737db9d515bbe39418b590fb4a8f4;hb=5b8ecce52d86ed7352e6e5b5d768c34321a4c58d;hp=6ce52ae95e0d92e05f0c566bc80089e82cceeb07;hpb=262b0ce87e9909bda20a56b6c382974168695e70;p=gnus diff --git a/lisp/gnus-util.el b/lisp/gnus-util.el index 6ce52ae95..0c22d4180 100644 --- a/lisp/gnus-util.el +++ b/lisp/gnus-util.el @@ -1,7 +1,7 @@ ;;; gnus-util.el --- utility functions for Gnus -;; Copyright (C) 1996,97 Free Software Foundation, Inc. +;; Copyright (C) 1996,97,98,99 Free Software Foundation, Inc. -;; Author: Lars Magne Ingebrigtsen +;; Author: Lars Magne Ingebrigtsen ;; Keywords: news ;; This file is part of GNU Emacs. @@ -33,11 +33,13 @@ (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 'rmail-insert-rmail-file-header "rmail") + (autoload 'rmail-count-new-messages "rmail") + (autoload 'rmail-show-message "rmail")) (defun gnus-boundp (variable) "Return non-nil if VARIABLE is bound and non-nil." @@ -72,12 +74,6 @@ (set symbol nil)) symbol)) -;; modified by MORIOKA Tomohiko -;; function `substring' might cut on a middle of multi-octet -;; character. -(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". @@ -90,7 +86,7 @@ "Return non-nil if FORM is funcallable." (or (and (symbolp form) (fboundp form)) (and (listp form) (eq (car form) 'lambda)) - (compiled-function-p form))) + (byte-code-function-p form))) (defsubst gnus-goto-char (point) (and point (goto-char point))) @@ -106,25 +102,15 @@ (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))))) +(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)) (defun gnus-delete-first (elt list) "Delete by side effect the first occurrence of ELT as a member of LIST." @@ -145,8 +131,8 @@ (defun gnus-byte-code (func) "Return a form that can be `eval'ed based on FUNC." - (let ((fval (symbol-function func))) - (if (compiled-function-p fval) + (let ((fval (indirect-function func))) + (if (byte-code-function-p fval) (let ((flist (append fval nil))) (setcar flist 'byte-code) flist) @@ -161,7 +147,6 @@ (setq address (substring from (match-beginning 0) (match-end 0)))) ;; Then we check whether the "name
" format is used. (and address - ;; Fix by MORIOKA Tomohiko ;; Linear white space is not required. (string-match (concat "[ \t]*<" (regexp-quote address) ">") from) (and (setq name (substring from 0 (match-beginning 0))) @@ -175,7 +160,6 @@ (1- (match-end 0))))) (and (string-match "()" from) (setq name address)) - ;; Fix by MORIOKA Tomohiko . ;; XOVER might not support folded From headers. (and (string-match "(.*" from) (setq name (substring from (1+ (match-beginning 0)) @@ -233,43 +217,6 @@ ;;; 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)) @@ -342,23 +289,9 @@ (yes-or-no-p prompt) (message ""))) -;; I suspect there's a better way, but I haven't taken the time to do -;; it yet. -erik selberg@cs.washington.edu (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 (not datevec) - "??-???" - (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)) - "???")))))) + "Return a string like DD-MMM from a big messy string." + (format-time-string "%d-%b" (safe-date-to-time messy-date))) (defmacro gnus-date-get-time (date) "Convert DATE string to Emacs time. @@ -369,7 +302,7 @@ 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))))) @@ -378,10 +311,10 @@ Cache the result as a text property stored in DATE." "Return a string of TIME in YYMMDDTHHMMSS format." (format-time-string "%Y%m%dT%H%M%S" time)) -(defun gnus-date-iso8601 (header) - "Convert the date field in HEADER to YYMMDDTHHMMSS" +(defun gnus-date-iso8601 (date) + "Convert the DATE to YYMMDDTHHMMSS." (condition-case () - (gnus-time-iso8601 (gnus-date-get-time header)) + (gnus-time-iso8601 (gnus-date-get-time date)) (error ""))) (defun gnus-mode-string-quote (string) @@ -453,7 +386,7 @@ 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 @@ -475,22 +408,23 @@ If N, return the Nth ancestor instead." (let* ((orig (point)) (end (window-end (get-buffer-window (current-buffer) t))) (max 0)) - ;; Find the longest line currently displayed in the window. - (goto-char (window-start)) - (while (and (not (eobp)) - (< (point) end)) - (end-of-line) - (setq max (max max (current-column))) - (forward-line 1)) - (goto-char orig) - ;; Scroll horizontally to center (sort of) the point. - (if (> max (window-width)) - (set-window-hscroll - (get-buffer-window (current-buffer) t) - (min (- (current-column) (/ (window-width) 3)) - (+ 2 (- max (window-width))))) - (set-window-hscroll (get-buffer-window (current-buffer) t) 0)) - max))) + (when end + ;; Find the longest line currently displayed in the window. + (goto-char (window-start)) + (while (and (not (eobp)) + (< (point) end)) + (end-of-line) + (setq max (max max (current-column))) + (forward-line 1)) + (goto-char orig) + ;; Scroll horizontally to center (sort of) the point. + (if (> max (window-width)) + (set-window-hscroll + (get-buffer-window (current-buffer) t) + (min (- (current-column) (/ (window-width) 3)) + (+ 2 (- max (window-width))))) + (set-window-hscroll (get-buffer-window (current-buffer) t) 0)) + max)))) (defun gnus-read-event-char () "Get the next event." @@ -499,20 +433,8 @@ 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." @@ -528,12 +450,11 @@ Timezone package is used." (defun gnus-kill-all-overlays () "Delete all overlays in the current buffer." - (unless gnus-xemacs - (let* ((overlayss (overlay-lists)) - (buffer-read-only nil) - (overlays (delq nil (nconc (car overlayss) (cdr overlayss))))) - (while overlays - (delete-overlay (pop overlays)))))) + (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*") @@ -543,9 +464,9 @@ Timezone package is used." (progn (set-buffer gnus-work-buffer) (erase-buffer)) - (set-buffer (get-buffer-create gnus-work-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." @@ -557,21 +478,40 @@ 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) + ) + (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'." @@ -580,14 +520,17 @@ Timezone package is used." (defun gnus-prin1 (form) "Use `prin1' on FORM in the current buffer. -Bind `print-quoted' to t while printing." +Bind `print-quoted' and `print-readably' to t while printing." (let ((print-quoted t) + (print-readably t) + (print-escape-multibyte nil) print-level print-length) (prin1 form (current-buffer)))) (defun gnus-prin1-to-string (form) - "The same as `prin1', but but `print-quoted' to t." - (let ((print-quoted t)) + "The same as `prin1', but bind `print-quoted' and `print-readably' to t." + (let ((print-quoted t) + (print-readably t)) (prin1-to-string form))) (defun gnus-make-directory (directory) @@ -604,14 +547,6 @@ Bind `print-quoted' to t while printing." ;; Write the buffer. (write-region (point-min) (point-max) file nil 'quietly)) -(defmacro gnus-delete-assq (key list) - `(let ((listval (eval ,list))) - (setq ,list (delq (assq ,key listval) listval)))) - -(defmacro gnus-delete-assoc (key list) - `(let ((listval ,list)) - (setq ,list (delq (assoc ,key listval) listval)))) - (defun gnus-delete-file (file) "Delete FILE if it exists." (when (file-exists-p file) @@ -623,16 +558,28 @@ Bind `print-quoted' 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) - (put-text-property beg (match-beginning 0) prop val) + (gnus-put-text-property beg (match-beginning 0) prop val) (setq beg (point))) - (put-text-property beg (point) prop val))))) + (gnus-put-text-property beg (point) prop val))))) + +(defun gnus-put-text-property-excluding-characters-with-faces (beg end + prop val) + "The same as `put-text-property', but don't put props on characters with the `gnus-face' property." + (let ((b beg)) + (while (/= b end) + (when (get-text-property b 'gnus-face) + (setq b (next-single-property-change b 'gnus-face nil end))) + (when (/= b end) + (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 @@ -755,11 +702,15 @@ 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)))))) + (rmail-show-message msg)) + (save-buffer))))) (kill-buffer tmpbuf))) (defun gnus-output-to-mail (filename &optional ask) @@ -827,6 +778,164 @@ with potentially long computations." (goto-char (point-max)) (insert "\^_"))) +(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)) + (while myfuns + (setq arg (funcall (pop myfuns) arg))) + arg)) + +(defun gnus-run-hooks (&rest funcs) + "Does the same as `run-hooks', but saves excursion." + (let ((buf (current-buffer))) + (unwind-protect + (apply 'run-hooks funcs) + (set-buffer buf)))) + +;;; +;;; .netrc and .authinforc parsing +;;; + +(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 + (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))))) + +(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))) + (pop list)) + (car (or list + (progn (while (and rest (not (assoc "default" (car rest)))) + (pop rest)) + rest))))) + +(defun gnus-netrc-get (alist type) + "Return the value of token TYPE from ALIST." + (cdr (assoc type alist))) + +;;; Various + +(defvar gnus-group-buffer) ; Compiler directive +(defun gnus-alive-p () + "Say whether Gnus is running or not." + (and (boundp 'gnus-group-buffer) + (get-buffer gnus-group-buffer) + (save-excursion + (set-buffer gnus-group-buffer) + (eq major-mode 'gnus-group-mode)))) + +(defun gnus-remove-duplicates (list) + (let (new (tail list)) + (while tail + (or (member (car tail) new) + (setq new (cons (car tail) new))) + (setq tail (cdr tail))) + (nreverse new))) + +(defun gnus-delete-if (predicate list) + "Delete elements from LIST that satisfy PREDICATE." + (let (out) + (while list + (unless (funcall predicate (car list)) + (push (car list) out)) + (pop list)) + (nreverse out))) + +(defun gnus-delete-alist (key alist) + "Delete all entries in ALIST that have a key eq to KEY." + (let (entry) + (while (setq entry (assq key alist)) + (setq alist (delq entry alist))) + alist)) + +(defmacro gnus-pull (key alist &optional assoc-p) + "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)))) + +(defun gnus-globalify-regexp (re) + "Returns a regexp that matches a whole line, iff RE matches a part of it." + (concat (unless (string-match "^\\^" re) "^.*") + 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)) + (provide 'gnus-util) ;;; gnus-util.el ends here