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Diffstat (limited to 'lisp/vc/vc-annotate.el')
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diff --git a/lisp/vc/vc-annotate.el b/lisp/vc/vc-annotate.el new file mode 100644 index 00000000000..1878fe8740f --- /dev/null +++ b/lisp/vc/vc-annotate.el @@ -0,0 +1,676 @@ +;;; vc-annotate.el --- VC Annotate Support + +;; Copyright (C) 1997, 1998, 2000, 2001, 2002, 2003, 2004, 2005, 2006, +;; 2007, 2008, 2009, 2010 Free Software Foundation, Inc. + +;; Author: Martin Lorentzson <emwson@emw.ericsson.se> +;; Maintainer: FSF +;; Keywords: tools + +;; This file is part of GNU Emacs. + +;; GNU Emacs is free software: you can redistribute it and/or modify +;; it under the terms of the GNU General Public License as published by +;; the Free Software Foundation, either version 3 of the License, or +;; (at your option) any later version. + +;; GNU Emacs is distributed in the hope that it will be useful, +;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +;; GNU General Public License for more details. + +;; You should have received a copy of the GNU General Public License +;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. + +;;; Commentary: +;; + +(require 'vc-hooks) +(require 'vc) + +;;; Code: +(eval-when-compile + (require 'cl)) + +(defcustom vc-annotate-display-mode 'fullscale + "Which mode to color the output of \\[vc-annotate] with by default." + :type '(choice (const :tag "By Color Map Range" nil) + (const :tag "Scale to Oldest" scale) + (const :tag "Scale Oldest->Newest" fullscale) + (number :tag "Specify Fractional Number of Days" + :value "20.5")) + :group 'vc) + +(defcustom vc-annotate-color-map + (if (and (tty-display-color-p) (<= (display-color-cells) 8)) + ;; A custom sorted TTY colormap + (let* ((colors + (sort + (delq nil + (mapcar (lambda (x) + (if (not (or + (string-equal (car x) "white") + (string-equal (car x) "black") )) + (car x))) + (tty-color-alist))) + (lambda (a b) + (cond + ((or (string-equal a "red") (string-equal b "blue")) t) + ((or (string-equal b "red") (string-equal a "blue")) nil) + ((string-equal a "yellow") t) + ((string-equal b "yellow") nil) + ((string-equal a "cyan") t) + ((string-equal b "cyan") nil) + ((string-equal a "green") t) + ((string-equal b "green") nil) + ((string-equal a "magenta") t) + ((string-equal b "magenta") nil) + (t (string< a b)))))) + (date 20.) + (delta (/ (- 360. date) (1- (length colors))))) + (mapcar (lambda (x) + (prog1 + (cons date x) + (setq date (+ date delta)))) colors)) + ;; Normal colormap: hue stepped from 0-240deg, value=1., saturation=0.75 + '(( 20. . "#FF3F3F") + ( 40. . "#FF6C3F") + ( 60. . "#FF993F") + ( 80. . "#FFC63F") + (100. . "#FFF33F") + (120. . "#DDFF3F") + (140. . "#B0FF3F") + (160. . "#83FF3F") + (180. . "#56FF3F") + (200. . "#3FFF56") + (220. . "#3FFF83") + (240. . "#3FFFB0") + (260. . "#3FFFDD") + (280. . "#3FF3FF") + (300. . "#3FC6FF") + (320. . "#3F99FF") + (340. . "#3F6CFF") + (360. . "#3F3FFF"))) + "Association list of age versus color, for \\[vc-annotate]. +Ages are given in units of fractional days. Default is eighteen +steps using a twenty day increment, from red to blue. For TTY +displays with 8 or fewer colors, the default is red to blue with +all other colors between (excluding black and white)." + :type 'alist + :group 'vc) + +(defcustom vc-annotate-very-old-color "#3F3FFF" + "Color for lines older than the current color range in \\[vc-annotate]." + :type 'string + :group 'vc) + +(defcustom vc-annotate-background "black" + "Background color for \\[vc-annotate]. +Default color is used if nil." + :type '(choice (const :tag "Default background" nil) (color)) + :group 'vc) + +(defcustom vc-annotate-menu-elements '(2 0.5 0.1 0.01) + "Menu elements for the mode-specific menu of VC-Annotate mode. +List of factors, used to expand/compress the time scale. See `vc-annotate'." + :type '(repeat number) + :group 'vc) + +(defvar vc-annotate-mode-map + (let ((m (make-sparse-keymap))) + (define-key m "a" 'vc-annotate-revision-previous-to-line) + (define-key m "d" 'vc-annotate-show-diff-revision-at-line) + (define-key m "D" 'vc-annotate-show-changeset-diff-revision-at-line) + (define-key m "f" 'vc-annotate-find-revision-at-line) + (define-key m "j" 'vc-annotate-revision-at-line) + (define-key m "l" 'vc-annotate-show-log-revision-at-line) + (define-key m "n" 'vc-annotate-next-revision) + (define-key m "p" 'vc-annotate-prev-revision) + (define-key m "w" 'vc-annotate-working-revision) + (define-key m "v" 'vc-annotate-toggle-annotation-visibility) + m) + "Local keymap used for VC-Annotate mode.") + +;;; Annotate functionality + +;; Declare globally instead of additional parameter to +;; temp-buffer-show-function (not possible to pass more than one +;; parameter). The use of annotate-ratio is deprecated in favor of +;; annotate-mode, which replaces it with the more sensible "span-to +;; days", along with autoscaling support. +(defvar vc-annotate-ratio nil "Global variable.") + +;; internal buffer-local variables +(defvar vc-annotate-backend nil) +(defvar vc-annotate-parent-file nil) +(defvar vc-annotate-parent-rev nil) +(defvar vc-annotate-parent-display-mode nil) + +(defconst vc-annotate-font-lock-keywords + ;; The fontification is done by vc-annotate-lines instead of font-lock. + '((vc-annotate-lines))) + +(define-derived-mode vc-annotate-mode special-mode "Annotate" + "Major mode for output buffers of the `vc-annotate' command. + +You can use the mode-specific menu to alter the time-span of the used +colors. See variable `vc-annotate-menu-elements' for customizing the +menu items." + ;; Frob buffer-invisibility-spec so that if it is originally a naked t, + ;; it will become a list, to avoid initial annotations being invisible. + (add-to-invisibility-spec 'foo) + (remove-from-invisibility-spec 'foo) + (set (make-local-variable 'truncate-lines) t) + (set (make-local-variable 'font-lock-defaults) + '(vc-annotate-font-lock-keywords t)) + (hack-dir-local-variables-non-file-buffer)) + +(defun vc-annotate-toggle-annotation-visibility () + "Toggle whether or not the annotation is visible." + (interactive) + (funcall (if (memq 'vc-annotate-annotation buffer-invisibility-spec) + 'remove-from-invisibility-spec + 'add-to-invisibility-spec) + 'vc-annotate-annotation) + (force-window-update (current-buffer))) + +(defun vc-annotate-display-default (ratio) + "Display the output of \\[vc-annotate] using the default color range. +The color range is given by `vc-annotate-color-map', scaled by RATIO. +The current time is used as the offset." + (interactive (progn (kill-local-variable 'vc-annotate-color-map) '(1.0))) + (message "Redisplaying annotation...") + (vc-annotate-display ratio) + (message "Redisplaying annotation...done")) + +(defun vc-annotate-oldest-in-map (color-map) + "Return the oldest time in the COLOR-MAP." + ;; Since entries should be sorted, we can just use the last one. + (caar (last color-map))) + +(defun vc-annotate-get-time-set-line-props () + (let ((bol (point)) + (date (vc-call-backend vc-annotate-backend 'annotate-time)) + (inhibit-read-only t)) + (assert (>= (point) bol)) + (put-text-property bol (point) 'invisible 'vc-annotate-annotation) + date)) + +(defun vc-annotate-display-autoscale (&optional full) + "Highlight the output of \\[vc-annotate] using an autoscaled color map. +Autoscaling means that the map is scaled from the current time to the +oldest annotation in the buffer, or, with prefix argument FULL, to +cover the range from the oldest annotation to the newest." + (interactive "P") + (let ((newest 0.0) + (oldest 999999.) ;Any CVS users at the founding of Rome? + (current (vc-annotate-convert-time (current-time))) + date) + (message "Redisplaying annotation...") + ;; Run through this file and find the oldest and newest dates annotated. + (save-excursion + (goto-char (point-min)) + (while (not (eobp)) + (when (setq date (vc-annotate-get-time-set-line-props)) + (when (> date newest) + (setq newest date)) + (when (< date oldest) + (setq oldest date))) + (forward-line 1))) + (vc-annotate-display + (/ (- (if full newest current) oldest) + (vc-annotate-oldest-in-map vc-annotate-color-map)) + (if full newest)) + (message "Redisplaying annotation...done \(%s\)" + (if full + (format "Spanned from %.1f to %.1f days old" + (- current oldest) + (- current newest)) + (format "Spanned to %.1f days old" (- current oldest)))))) + +;; Menu -- Using easymenu.el +(easy-menu-define vc-annotate-mode-menu vc-annotate-mode-map + "VC Annotate Display Menu" + `("VC-Annotate" + ["By Color Map Range" (unless (null vc-annotate-display-mode) + (setq vc-annotate-display-mode nil) + (vc-annotate-display-select)) + :style toggle :selected (null vc-annotate-display-mode)] + ,@(let ((oldest-in-map (vc-annotate-oldest-in-map vc-annotate-color-map))) + (mapcar (lambda (element) + (let ((days (* element oldest-in-map))) + `[,(format "Span %.1f days" days) + (vc-annotate-display-select nil ,days) + :style toggle :selected + (eql vc-annotate-display-mode ,days) ])) + vc-annotate-menu-elements)) + ["Span ..." + (vc-annotate-display-select + nil (float (string-to-number (read-string "Span how many days? "))))] + "--" + ["Span to Oldest" + (unless (eq vc-annotate-display-mode 'scale) + (vc-annotate-display-select nil 'scale)) + :help + "Use an autoscaled color map from the oldest annotation to the current time" + :style toggle :selected + (eq vc-annotate-display-mode 'scale)] + ["Span Oldest->Newest" + (unless (eq vc-annotate-display-mode 'fullscale) + (vc-annotate-display-select nil 'fullscale)) + :help + "Use an autoscaled color map from the oldest to the newest annotation" + :style toggle :selected + (eq vc-annotate-display-mode 'fullscale)] + "--" + ["Toggle annotation visibility" vc-annotate-toggle-annotation-visibility + :help + "Toggle whether the annotation is visible or not"] + ["Annotate previous revision" vc-annotate-prev-revision + :help "Visit the annotation of the revision previous to this one"] + ["Annotate next revision" vc-annotate-next-revision + :help "Visit the annotation of the revision after this one"] + ["Annotate revision at line" vc-annotate-revision-at-line + :help + "Visit the annotation of the revision identified in the current line"] + ["Annotate revision previous to line" vc-annotate-revision-previous-to-line + :help "Visit the annotation of the revision before the revision at line"] + ["Annotate latest revision" vc-annotate-working-revision + :help "Visit the annotation of the working revision of this file"] + "--" + ["Show log of revision at line" vc-annotate-show-log-revision-at-line + :help "Visit the log of the revision at line"] + ["Show diff of revision at line" vc-annotate-show-diff-revision-at-line + :help "Visit the diff of the revision at line from its previous revision"] + ["Show changeset diff of revision at line" + vc-annotate-show-changeset-diff-revision-at-line + :enable + (eq 'repository (vc-call-backend ,vc-annotate-backend 'revision-granularity)) + :help "Visit the diff of the revision at line from its previous revision"] + ["Visit revision at line" vc-annotate-find-revision-at-line + :help "Visit the revision identified in the current line"])) + +(defun vc-annotate-display-select (&optional buffer mode) + "Highlight the output of \\[vc-annotate]. +By default, the current buffer is highlighted, unless overridden by +BUFFER. `vc-annotate-display-mode' specifies the highlighting mode to +use; you may override this using the second optional arg MODE." + (interactive) + (when mode (setq vc-annotate-display-mode mode)) + (pop-to-buffer (or buffer (current-buffer))) + (cond ((null vc-annotate-display-mode) + ;; The ratio is global, thus relative to the global color-map. + (kill-local-variable 'vc-annotate-color-map) + (vc-annotate-display-default (or vc-annotate-ratio 1.0))) + ;; One of the auto-scaling modes + ((eq vc-annotate-display-mode 'scale) + (vc-exec-after `(vc-annotate-display-autoscale))) + ((eq vc-annotate-display-mode 'fullscale) + (vc-exec-after `(vc-annotate-display-autoscale t))) + ((numberp vc-annotate-display-mode) ; A fixed number of days lookback + (vc-annotate-display-default + (/ vc-annotate-display-mode + (vc-annotate-oldest-in-map vc-annotate-color-map)))) + (t (error "No such display mode: %s" + vc-annotate-display-mode)))) + +;;;###autoload +(defun vc-annotate (file rev &optional display-mode buf move-point-to) + "Display the edit history of the current file using colors. + +This command creates a buffer that shows, for each line of the current +file, when it was last edited and by whom. Additionally, colors are +used to show the age of each line--blue means oldest, red means +youngest, and intermediate colors indicate intermediate ages. By +default, the time scale stretches back one year into the past; +everything that is older than that is shown in blue. + +With a prefix argument, this command asks two questions in the +minibuffer. First, you may enter a revision number; then the buffer +displays and annotates that revision instead of the working revision +\(type RET in the minibuffer to leave that default unchanged). Then, +you are prompted for the time span in days which the color range +should cover. For example, a time span of 20 days means that changes +over the past 20 days are shown in red to blue, according to their +age, and everything that is older than that is shown in blue. + +If MOVE-POINT-TO is given, move the point to that line. + +Customization variables: + +`vc-annotate-menu-elements' customizes the menu elements of the +mode-specific menu. `vc-annotate-color-map' and +`vc-annotate-very-old-color' define the mapping of time to colors. +`vc-annotate-background' specifies the background color." + (interactive + (save-current-buffer + (vc-ensure-vc-buffer) + (list buffer-file-name + (let ((def (vc-working-revision buffer-file-name))) + (if (null current-prefix-arg) def + (read-string + (format "Annotate from revision (default %s): " def) + nil nil def))) + (if (null current-prefix-arg) + vc-annotate-display-mode + (float (string-to-number + (read-string "Annotate span days (default 20): " + nil nil "20"))))))) + (vc-ensure-vc-buffer) + (setq vc-annotate-display-mode display-mode) ;Not sure why. --Stef + (let* ((temp-buffer-name (format "*Annotate %s (rev %s)*" (buffer-name) rev)) + (temp-buffer-show-function 'vc-annotate-display-select) + ;; If BUF is specified, we presume the caller maintains current line, + ;; so we don't need to do it here. This implementation may give + ;; strange results occasionally in the case of REV != WORKFILE-REV. + (current-line (or move-point-to (unless buf + (save-restriction + (widen) + (line-number-at-pos)))))) + (message "Annotating...") + ;; If BUF is specified it tells in which buffer we should put the + ;; annotations. This is used when switching annotations to another + ;; revision, so we should update the buffer's name. + (when buf (with-current-buffer buf + (rename-buffer temp-buffer-name t) + ;; In case it had to be uniquified. + (setq temp-buffer-name (buffer-name)))) + (with-output-to-temp-buffer temp-buffer-name + (let ((backend (vc-backend file)) + (coding-system-for-read buffer-file-coding-system)) + (vc-call-backend backend 'annotate-command file + (get-buffer temp-buffer-name) rev) + ;; we must setup the mode first, and then set our local + ;; variables before the show-function is called at the exit of + ;; with-output-to-temp-buffer + (with-current-buffer temp-buffer-name + (unless (equal major-mode 'vc-annotate-mode) + (vc-annotate-mode)) + (set (make-local-variable 'vc-annotate-backend) backend) + (set (make-local-variable 'vc-annotate-parent-file) file) + (set (make-local-variable 'vc-annotate-parent-rev) rev) + (set (make-local-variable 'vc-annotate-parent-display-mode) + display-mode)))) + + (with-current-buffer temp-buffer-name + (vc-exec-after + `(progn + ;; Ideally, we'd rather not move point if the user has already + ;; moved it elsewhere, but really point here is not the position + ;; of the user's cursor :-( + (when ,current-line ;(and (bobp)) + (goto-line ,current-line) + (setq vc-sentinel-movepoint (point))) + (unless (active-minibuffer-window) + (message "Annotating... done"))))))) + +(defun vc-annotate-prev-revision (prefix) + "Visit the annotation of the revision previous to this one. + +With a numeric prefix argument, annotate the revision that many +revisions previous." + (interactive "p") + (vc-annotate-warp-revision (- 0 prefix))) + +(defun vc-annotate-next-revision (prefix) + "Visit the annotation of the revision after this one. + +With a numeric prefix argument, annotate the revision that many +revisions after." + (interactive "p") + (vc-annotate-warp-revision prefix)) + +(defun vc-annotate-working-revision () + "Visit the annotation of the working revision of this file." + (interactive) + (if (not (equal major-mode 'vc-annotate-mode)) + (message "Cannot be invoked outside of a vc annotate buffer") + (let ((warp-rev (vc-working-revision vc-annotate-parent-file))) + (if (equal warp-rev vc-annotate-parent-rev) + (message "Already at revision %s" warp-rev) + (vc-annotate-warp-revision warp-rev))))) + +(defun vc-annotate-extract-revision-at-line () + "Extract the revision number of the current line. +Return a cons (REV . FILENAME)." + ;; This function must be invoked from a buffer in vc-annotate-mode + (let ((rev (vc-call-backend vc-annotate-backend + 'annotate-extract-revision-at-line))) + (if (or (null rev) (consp rev)) + rev + (cons rev vc-annotate-parent-file)))) + +(defun vc-annotate-revision-at-line () + "Visit the annotation of the revision identified in the current line." + (interactive) + (if (not (equal major-mode 'vc-annotate-mode)) + (message "Cannot be invoked outside of a vc annotate buffer") + (let ((rev-at-line (vc-annotate-extract-revision-at-line))) + (if (not rev-at-line) + (message "Cannot extract revision number from the current line") + (if (and (equal (car rev-at-line) vc-annotate-parent-rev) + (string= (cdr rev-at-line) vc-annotate-parent-file)) + (message "Already at revision %s" rev-at-line) + (vc-annotate-warp-revision (car rev-at-line) (cdr rev-at-line))))))) + +(defun vc-annotate-find-revision-at-line () + "Visit the revision identified in the current line." + (interactive) + (if (not (equal major-mode 'vc-annotate-mode)) + (message "Cannot be invoked outside of a vc annotate buffer") + (let ((rev-at-line (vc-annotate-extract-revision-at-line))) + (if (not rev-at-line) + (message "Cannot extract revision number from the current line") + (switch-to-buffer-other-window + (vc-find-revision (cdr rev-at-line) (car rev-at-line))))))) + +(defun vc-annotate-revision-previous-to-line () + "Visit the annotation of the revision before the revision at line." + (interactive) + (if (not (equal major-mode 'vc-annotate-mode)) + (message "Cannot be invoked outside of a vc annotate buffer") + (let* ((rev-at-line (vc-annotate-extract-revision-at-line)) + (prev-rev nil) + (rev (car rev-at-line)) + (fname (cdr rev-at-line))) + (if (not rev-at-line) + (message "Cannot extract revision number from the current line") + (setq prev-rev + (vc-call-backend vc-annotate-backend 'previous-revision + fname rev)) + (vc-annotate-warp-revision prev-rev fname))))) + +(defvar log-view-vc-backend) +(defvar log-view-vc-fileset) + +(defun vc-annotate-show-log-revision-at-line () + "Visit the log of the revision at line. +If the VC backend supports it, only show the log entry for the revision. +If a *vc-change-log* buffer exists and already shows a log for +the file in question, search for the log entry required and move point ." + (interactive) + (if (not (equal major-mode 'vc-annotate-mode)) + (message "Cannot be invoked outside of a vc annotate buffer") + (let ((rev-at-line (vc-annotate-extract-revision-at-line))) + (if (not rev-at-line) + (message "Cannot extract revision number from the current line") + (let ((backend vc-annotate-backend) + (log-buf (get-buffer "*vc-change-log*")) + pos) + (if (and + log-buf + ;; Look for a log buffer that already displays the correct file. + (with-current-buffer log-buf + (and (eq backend log-view-vc-backend) + (null (cdr log-view-vc-fileset)) + (string= (car log-view-vc-fileset) (cdr rev-at-line)) + ;; Check if the entry we require can be found. + (vc-call-backend + backend 'show-log-entry (car rev-at-line)) + (setq pos (point))))) + (progn + (pop-to-buffer log-buf) + (goto-char pos)) + ;; Ask the backend to display a single log entry. + (vc-print-log-internal + vc-annotate-backend (list (cdr rev-at-line)) + (car rev-at-line) t 1))))))) + +(defun vc-annotate-show-diff-revision-at-line-internal (filediff) + (if (not (equal major-mode 'vc-annotate-mode)) + (message "Cannot be invoked outside of a vc annotate buffer") + (let* ((rev-at-line (vc-annotate-extract-revision-at-line)) + (prev-rev nil) + (rev (car rev-at-line)) + (fname (cdr rev-at-line))) + (if (not rev-at-line) + (message "Cannot extract revision number from the current line") + (setq prev-rev + (vc-call-backend vc-annotate-backend 'previous-revision + fname rev)) + (if (not prev-rev) + (message "Cannot diff from any revision prior to %s" rev) + (save-window-excursion + (vc-diff-internal + nil + ;; The value passed here should follow what + ;; `vc-deduce-fileset' returns. + (list vc-annotate-backend + (if filediff + (list fname) + nil)) + prev-rev rev)) + (switch-to-buffer "*vc-diff*")))))) + +(defun vc-annotate-show-diff-revision-at-line () + "Visit the diff of the revision at line from its previous revision." + (interactive) + (vc-annotate-show-diff-revision-at-line-internal t)) + +(defun vc-annotate-show-changeset-diff-revision-at-line () + "Visit the diff of the revision at line from its previous revision for all files in the changeset." + (interactive) + (when (eq 'file (vc-call-backend vc-annotate-backend 'revision-granularity)) + (error "The %s backend does not support changeset diffs" vc-annotate-backend)) + (vc-annotate-show-diff-revision-at-line-internal nil)) + +(defun vc-annotate-warp-revision (revspec &optional file) + "Annotate the revision described by REVSPEC. + +If REVSPEC is a positive integer, warp that many revisions forward, +if possible, otherwise echo a warning message. If REVSPEC is a +negative integer, warp that many revisions backward, if possible, +otherwise echo a warning message. If REVSPEC is a string, then it +describes a revision number, so warp to that revision." + (if (not (equal major-mode 'vc-annotate-mode)) + (message "Cannot be invoked outside of a vc annotate buffer") + (let* ((buf (current-buffer)) + (oldline (line-number-at-pos)) + (revspeccopy revspec) + (newrev nil)) + (cond + ((and (integerp revspec) (> revspec 0)) + (setq newrev vc-annotate-parent-rev) + (while (and (> revspec 0) newrev) + (setq newrev (vc-call-backend vc-annotate-backend 'next-revision + (or file vc-annotate-parent-file) newrev)) + (setq revspec (1- revspec))) + (unless newrev + (message "Cannot increment %d revisions from revision %s" + revspeccopy vc-annotate-parent-rev))) + ((and (integerp revspec) (< revspec 0)) + (setq newrev vc-annotate-parent-rev) + (while (and (< revspec 0) newrev) + (setq newrev (vc-call-backend vc-annotate-backend 'previous-revision + (or file vc-annotate-parent-file) newrev)) + (setq revspec (1+ revspec))) + (unless newrev + (message "Cannot decrement %d revisions from revision %s" + (- 0 revspeccopy) vc-annotate-parent-rev))) + ((stringp revspec) (setq newrev revspec)) + (t (error "Invalid argument to vc-annotate-warp-revision"))) + (when newrev + (vc-annotate (or file vc-annotate-parent-file) newrev + vc-annotate-parent-display-mode + buf + ;; Pass the current line so that vc-annotate will + ;; place the point in the line. + (min oldline (progn (goto-char (point-max)) + (forward-line -1) + (line-number-at-pos)))))))) + +(defun vc-annotate-compcar (threshold a-list) + "Test successive cons cells of A-LIST against THRESHOLD. +Return the first cons cell with a car that is not less than THRESHOLD, +nil if no such cell exists." + (let ((i 1) + (tmp-cons (car a-list))) + (while (and tmp-cons (< (car tmp-cons) threshold)) + (setq tmp-cons (car (nthcdr i a-list))) + (setq i (+ i 1))) + tmp-cons)) ; Return the appropriate value + +(defun vc-annotate-convert-time (time) + "Convert a time value to a floating-point number of days. +The argument TIME is a list as returned by `current-time' or +`encode-time', only the first two elements of that list are considered." + (/ (+ (* (float (car time)) (lsh 1 16)) (cadr time)) 24 3600)) + +(defun vc-annotate-difference (&optional offset) + "Return the time span in days to the next annotation. +This calls the backend function annotate-time, and returns the +difference in days between the time returned and the current time, +or OFFSET if present." + (let ((next-time (vc-annotate-get-time-set-line-props))) + (when next-time + (- (or offset + (vc-call-backend vc-annotate-backend 'annotate-current-time)) + next-time)))) + +(defun vc-default-annotate-current-time (backend) + "Return the current time, encoded as fractional days." + (vc-annotate-convert-time (current-time))) + +(defvar vc-annotate-offset nil) + +(defun vc-annotate-display (ratio &optional offset) + "Highlight `vc-annotate' output in the current buffer. +RATIO is the expansion that should be applied to `vc-annotate-color-map'. +The annotations are relative to the current time, unless overridden by OFFSET." + (when (/= ratio 1.0) + (set (make-local-variable 'vc-annotate-color-map) + (mapcar (lambda (elem) (cons (* (car elem) ratio) (cdr elem))) + vc-annotate-color-map))) + (set (make-local-variable 'vc-annotate-offset) offset) + (font-lock-mode 1)) + +(defun vc-annotate-lines (limit) + (while (< (point) limit) + (let ((difference (vc-annotate-difference vc-annotate-offset)) + (start (point)) + (end (progn (forward-line 1) (point)))) + (when difference + (let* ((color (or (vc-annotate-compcar difference vc-annotate-color-map) + (cons nil vc-annotate-very-old-color))) + ;; substring from index 1 to remove any leading `#' in the name + (face-name (concat "vc-annotate-face-" + (if (string-equal + (substring (cdr color) 0 1) "#") + (substring (cdr color) 1) + (cdr color)))) + ;; Make the face if not done. + (face (or (intern-soft face-name) + (let ((tmp-face (make-face (intern face-name)))) + (set-face-foreground tmp-face (cdr color)) + (when vc-annotate-background + (set-face-background tmp-face + vc-annotate-background)) + tmp-face)))) ; Return the face + (put-text-property start end 'face face))))) + ;; Pretend to font-lock there were no matches. + nil) + +(provide 'vc-annotate) + +;; arch-tag: c3454a89-80e5-4ffd-8993-671b59612898 +;;; vc-annotate.el ends here |