1
0
mirror of https://git.savannah.gnu.org/git/emacs.git synced 2024-12-29 11:02:01 +00:00
emacs/lisp/vc-hg.el
Dan Nicolaescu 115c006177 * vc.el (vc-status-menu-map, vc-status-mode-map): Bind vc-revert.
(vc-status-refresh): Create a temporary buffer and call the
`dir-status' backend function from that buffer.

* vc-bzr.el (vc-bzr-dir-status): Don't create a buffer.
(vc-bzr-after-dir-status): Don't kill the buffer.

* vc-cvs.el (vc-cvs-dir-status): Don't create a buffer.
(vc-cvs-after-dir-status): Don't kill the buffer.

* vc-git.el (vc-git-dir-status): Don't create a buffer.
(vc-git-after-dir-status-stage2): Don't kill the buffer.

* vc-hg.el (vc-hg-dir-status): Don't create a buffer.
(vc-hg-after-dir-status): Don't kill the buffer.

* vc-svn.el (vc-svn-dir-status): Don't create a buffer.
(vc-svn-after-dir-status): Don't kill the buffer.
2008-03-29 05:34:52 +00:00

581 lines
20 KiB
EmacsLisp
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

;;; vc-hg.el --- VC backend for the mercurial version control system
;; Copyright (C) 2006, 2007, 2008 Free Software Foundation, Inc.
;; Author: Ivan Kanis
;; 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, 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; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;;; Commentary:
;; This is a mercurial version control backend
;;; Thanks:
;;; Bugs:
;;; Installation:
;;; Todo:
;; Implement the rest of the vc interface. See the comment at the
;; beginning of vc.el. The current status is:
;; FUNCTION NAME STATUS
;; BACKEND PROPERTIES
;; * revision-granularity OK
;; STATE-QUERYING FUNCTIONS
;; * registered (file) OK
;; * state (file) OK
;; - state-heuristic (file) ?? PROBABLY NOT NEEDED
;; - dir-state (dir) OK
;; * working-revision (file) OK
;; - latest-on-branch-p (file) ??
;; * checkout-model (file) OK
;; - workfile-unchanged-p (file) OK
;; - mode-line-string (file) NOT NEEDED
;; - dired-state-info (file) OK
;; STATE-CHANGING FUNCTIONS
;; * register (files &optional rev comment) OK
;; * create-repo () OK
;; - init-revision () NOT NEEDED
;; - responsible-p (file) OK
;; - could-register (file) OK
;; - receive-file (file rev) ?? PROBABLY NOT NEEDED
;; - unregister (file) COMMENTED OUT, MAY BE INCORRECT
;; * checkin (files rev comment) OK
;; * find-revision (file rev buffer) OK
;; * checkout (file &optional editable rev) OK
;; * revert (file &optional contents-done) OK
;; - rollback (files) ?? PROBABLY NOT NEEDED
;; - merge (file rev1 rev2) NEEDED
;; - merge-news (file) NEEDED
;; - steal-lock (file &optional revision) NOT NEEDED
;; HISTORY FUNCTIONS
;; * print-log (files &optional buffer) OK
;; - log-view-mode () OK
;; - show-log-entry (revision) NOT NEEDED, DEFAULT IS GOOD
;; - wash-log (file) ??
;; - logentry-check () NOT NEEDED
;; - comment-history (file) NOT NEEDED
;; - update-changelog (files) NOT NEEDED
;; * diff (files &optional rev1 rev2 buffer) OK
;; - revision-completion-table (files) OK?
;; - annotate-command (file buf &optional rev) OK
;; - annotate-time () OK
;; - annotate-current-time () ?? NOT NEEDED
;; - annotate-extract-revision-at-line () OK
;; SNAPSHOT SYSTEM
;; - create-snapshot (dir name branchp) NEEDED (probably branch?)
;; - assign-name (file name) NOT NEEDED
;; - retrieve-snapshot (dir name update) ?? NEEDED??
;; MISCELLANEOUS
;; - make-version-backups-p (file) ??
;; - repository-hostname (dirname) ??
;; - previous-revision (file rev) OK
;; - next-revision (file rev) OK
;; - check-headers () ??
;; - clear-headers () ??
;; - delete-file (file) TEST IT
;; - rename-file (old new) OK
;; - find-file-hook () PROBABLY NOT NEEDED
;; - find-file-not-found-hook () PROBABLY NOT NEEDED
;; Implement Stefan Monnier's advice:
;; vc-hg-registered and vc-hg-state
;; Both of those functions should be super extra careful to fail gracefully in
;; unexpected circumstances. The reason this is important is that any error
;; there will prevent the user from even looking at the file :-(
;; Ideally, just like in vc-arch and vc-cvs, checking that the file is under
;; mercurial's control and extracting the current revision should be done
;; without even using `hg' (this way even if you don't have `hg' installed,
;; Emacs is able to tell you this file is under mercurial's control).
;;; History:
;;
;;; Code:
(eval-when-compile
(require 'cl)
(require 'vc))
;;; Customization options
(defcustom vc-hg-global-switches nil
"*Global switches to pass to any Hg command."
:type '(choice (const :tag "None" nil)
(string :tag "Argument String")
(repeat :tag "Argument List"
:value ("")
string))
:version "22.2"
:group 'vc)
;;; Properties of the backend
(defun vc-hg-revision-granularity ()
'repository)
;;; State querying functions
;;;###autoload (defun vc-hg-registered (file)
;;;###autoload "Return non-nil if FILE is registered with hg."
;;;###autoload (if (vc-find-root file ".hg") ; short cut
;;;###autoload (progn
;;;###autoload (load "vc-hg")
;;;###autoload (vc-hg-registered file))))
;; Modelled after the similar function in vc-bzr.el
(defun vc-hg-registered (file)
"Return non-nil if FILE is registered with hg."
(when (vc-hg-root file) ; short cut
(let ((state (vc-hg-state file))) ; expensive
(vc-file-setprop file 'vc-state state)
(and state (not (memq state '(ignored unregistered)))))))
(defun vc-hg-state (file)
"Hg-specific version of `vc-state'."
(let*
((status nil)
(out
(with-output-to-string
(with-current-buffer
standard-output
(setq status
(condition-case nil
;; Ignore all errors.
(call-process
"hg" nil t nil "--cwd" (file-name-directory file)
"status" "-A" (file-name-nondirectory file))
;; Some problem happened. E.g. We can't find an `hg'
;; executable.
(error nil)))))))
(when (eq 0 status)
(when (null (string-match ".*: No such file or directory$" out))
(let ((state (aref out 0)))
(cond
((eq state ?=) 'up-to-date)
((eq state ?A) 'added)
((eq state ?M) 'edited)
((eq state ?I) 'ignored)
((eq state ?R) 'removed)
((eq state ?!) 'missing)
((eq state ??) 'unregistered)
((eq state ?C) 'up-to-date) ;; Older mercurials use this
(t 'up-to-date)))))))
(defun vc-hg-dir-state (dir)
(with-temp-buffer
(buffer-disable-undo) ;; Because these buffers can get huge
(vc-hg-command (current-buffer) nil dir "status" "-A")
(goto-char (point-min))
(let ((status-char nil)
(file nil))
(while (not (eobp))
(setq status-char (char-after))
(setq file
(expand-file-name
(buffer-substring-no-properties (+ (point) 2)
(line-end-position))))
(cond
;; State flag for a clean file is now C, might change to =.
;; The rest of the possible states in "hg status" output:
;; ! = deleted, but still tracked
;; should not show up in vc-dired, so don't deal with them
;; here.
;; Mercurial up to 0.9.5 used C, = is used now.
((or (eq status-char ?=) (eq status-char ?C))
(vc-file-setprop file 'vc-backend 'Hg)
(vc-file-setprop file 'vc-state 'up-to-date))
((eq status-char ?A)
(vc-file-setprop file 'vc-backend 'Hg)
(vc-file-setprop file 'vc-working-revision "0")
(vc-file-setprop file 'vc-state 'added))
((eq status-char ?R)
(vc-file-setprop file 'vc-backend 'Hg)
(vc-file-setprop file 'vc-state 'removed))
((eq status-char ?M)
(vc-file-setprop file 'vc-backend 'Hg)
(vc-file-setprop file 'vc-state 'edited))
((eq status-char ?I)
(vc-file-setprop file 'vc-backend 'Hg)
(vc-file-setprop file 'vc-state 'ignored))
((eq status-char ??)
(vc-file-setprop file 'vc-backend 'none)
(vc-file-setprop file 'vc-state 'unregistered))
((eq status-char ?!)
(vc-file-setprop file 'vc-backend 'Hg)
(vc-file-setprop file 'vc-state 'missing))
(t ;; Presently C, might change to = in 0.9.6
(vc-file-setprop file 'vc-backend 'Hg)
(vc-file-setprop file 'vc-state 'up-to-date)))
(forward-line)))))
(defun vc-hg-working-revision (file)
"Hg-specific version of `vc-working-revision'."
(let*
((status nil)
(out
(with-output-to-string
(with-current-buffer
standard-output
(setq status
(condition-case nil
;; Ignore all errors.
(call-process
"hg" nil t nil "--cwd" (file-name-directory file)
"log" "-l1" (file-name-nondirectory file))
;; Some problem happened. E.g. We can't find an `hg'
;; executable.
(error nil)))))))
(when (eq 0 status)
(if (string-match "changeset: *\\([0-9]*\\)" out)
(match-string 1 out)
"0"))))
;;; History functions
(defun vc-hg-print-log (files &optional buffer)
"Get change log associated with FILES."
;; `log-view-mode' needs to have the file names in order to function
;; correctly. "hg log" does not print it, so we insert it here by
;; hand.
;; `vc-do-command' creates the buffer, but we need it before running
;; the command.
(vc-setup-buffer buffer)
;; If the buffer exists from a previous invocation it might be
;; read-only.
(let ((inhibit-read-only t))
;; We need to loop and call "hg log" on each file separately.
;; "hg log" with multiple file arguments mashes all the logs
;; together. Ironically enough, this puts us back near CVS
;; which can't generate proper fileset logs either.
(dolist (file files)
(with-current-buffer
buffer
(insert "Working file: " file "\n")) ;; Like RCS/CVS.
(vc-hg-command buffer 0 file "log"))))
(defvar log-view-message-re)
(defvar log-view-file-re)
(defvar log-view-font-lock-keywords)
(define-derived-mode vc-hg-log-view-mode log-view-mode "Hg-Log-View"
(require 'add-log) ;; we need the add-log faces
(set (make-local-variable 'log-view-file-re) "^Working file:[ \t]+\\(.+\\)")
(set (make-local-variable 'log-view-message-re)
"^changeset:[ \t]*\\([0-9]+\\):\\(.+\\)")
(set (make-local-variable 'log-view-font-lock-keywords)
(append
log-view-font-lock-keywords
'(
;; Handle the case:
;; user: FirstName LastName <foo@bar>
("^user:[ \t]+\\([^<(]+?\\)[ \t]*[(<]\\([A-Za-z0-9_.+-]+@[A-Za-z0-9_.-]+\\)[>)]"
(1 'change-log-name)
(2 'change-log-email))
;; Handle the cases:
;; user: foo@bar
;; and
;; user: foo
("^user:[ \t]+\\([A-Za-z0-9_.+-]+\\(?:@[A-Za-z0-9_.-]+\\)?\\)"
(1 'change-log-email))
("^date: \\(.+\\)" (1 'change-log-date))
("^summary:[ \t]+\\(.+\\)" (1 'log-view-message))))))
(defun vc-hg-diff (files &optional oldvers newvers buffer)
"Get a difference report using hg between two revisions of FILES."
(let ((working (vc-working-revision (car files))))
(if (and (equal oldvers working) (not newvers))
(setq oldvers nil))
(if (and (not oldvers) newvers)
(setq oldvers working))
(apply #'vc-hg-command (or buffer "*vc-diff*") nil
(mapcar (lambda (file) (file-name-nondirectory file)) files)
"--cwd" (file-name-directory (car files))
"diff"
(append
(if oldvers
(if newvers
(list "-r" oldvers "-r" newvers)
(list "-r" oldvers)))))))
(defun vc-hg-revision-table (files)
(let ((default-directory (file-name-directory (car files))))
(with-temp-buffer
(vc-hg-command t nil files "log" "--template" "{rev} ")
(split-string
(buffer-substring-no-properties (point-min) (point-max))))))
;; Modelled after the similar function in vc-cvs.el
(defun vc-hg-revision-completion-table (files)
(lexical-let ((files files)
table)
(setq table (lazy-completion-table
table (lambda () (vc-hg-revision-table files))))
table))
(defun vc-hg-annotate-command (file buffer &optional revision)
"Execute \"hg annotate\" on FILE, inserting the contents in BUFFER.
Optional arg REVISION is a revision to annotate from."
(vc-hg-command buffer 0 file "annotate" "-d" "-n" (if revision (concat "-r" revision)))
(with-current-buffer buffer
(goto-char (point-min))
(re-search-forward "^[0-9]")
(delete-region (point-min) (1- (point)))))
;; The format for one line output by "hg annotate -d -n" looks like this:
;;215 Wed Jun 20 21:22:58 2007 -0700: CONTENTS
;; i.e: VERSION_NUMBER DATE: CONTENTS
(defconst vc-hg-annotate-re "^[ \t]*\\([0-9]+\\) \\(.\\{30\\}\\): ")
(defun vc-hg-annotate-time ()
(when (looking-at vc-hg-annotate-re)
(goto-char (match-end 0))
(vc-annotate-convert-time
(date-to-time (match-string-no-properties 2)))))
(defun vc-hg-annotate-extract-revision-at-line ()
(save-excursion
(beginning-of-line)
(if (looking-at vc-hg-annotate-re) (match-string-no-properties 1))))
(defun vc-hg-previous-revision (file rev)
(let ((newrev (1- (string-to-number rev))))
(when (>= newrev 0)
(number-to-string newrev))))
(defun vc-hg-next-revision (file rev)
(let ((newrev (1+ (string-to-number rev)))
(tip-revision
(with-temp-buffer
(vc-hg-command t 0 nil "tip")
(goto-char (point-min))
(re-search-forward "^changeset:[ \t]*\\([0-9]+\\):")
(string-to-number (match-string-no-properties 1)))))
;; We don't want to exceed the maximum possible revision number, ie
;; the tip revision.
(when (<= newrev tip-revision)
(number-to-string newrev))))
;; Modelled after the similar function in vc-bzr.el
(defun vc-hg-delete-file (file)
"Delete FILE and delete it in the hg repository."
(condition-case ()
(delete-file file)
(file-error nil))
(vc-hg-command nil 0 file "remove" "--after" "--force"))
;; Modelled after the similar function in vc-bzr.el
(defun vc-hg-rename-file (old new)
"Rename file from OLD to NEW using `hg mv'."
(vc-hg-command nil 0 new old "mv"))
(defun vc-hg-register (files &optional rev comment)
"Register FILES under hg.
REV is ignored.
COMMENT is ignored."
(vc-hg-command nil 0 files "add"))
(defun vc-hg-create-repo ()
"Create a new Mercurial repository."
(vc-hg-command nil 0 nil "init"))
(defalias 'vc-hg-responsible-p 'vc-hg-root)
;; Modelled after the similar function in vc-bzr.el
(defun vc-hg-could-register (file)
"Return non-nil if FILE could be registered under hg."
(and (vc-hg-responsible-p file) ; shortcut
(condition-case ()
(with-temp-buffer
(vc-hg-command t nil file "add" "--dry-run"))
;; The command succeeds with no output if file is
;; registered.
(error))))
;; XXX This would remove the file. Is that correct?
;; (defun vc-hg-unregister (file)
;; "Unregister FILE from hg."
;; (vc-hg-command nil nil file "remove"))
(defun vc-hg-checkin (files rev comment)
"Hg-specific version of `vc-backend-checkin'.
REV is ignored."
(vc-hg-command nil 0 files "commit" "-m" comment))
(defun vc-hg-find-revision (file rev buffer)
(let ((coding-system-for-read 'binary)
(coding-system-for-write 'binary))
(if rev
(vc-hg-command buffer 0 file "cat" "-r" rev)
(vc-hg-command buffer 0 file "cat"))))
;; Modelled after the similar function in vc-bzr.el
(defun vc-hg-checkout (file &optional editable rev)
"Retrieve a revision of FILE.
EDITABLE is ignored.
REV is the revision to check out into WORKFILE."
(let ((coding-system-for-read 'binary)
(coding-system-for-write 'binary))
(with-current-buffer (or (get-file-buffer file) (current-buffer))
(if rev
(vc-hg-command t 0 file "cat" "-r" rev)
(vc-hg-command t 0 file "cat")))))
(defun vc-hg-checkout-model (file)
'implicit)
;; Modelled after the similar function in vc-bzr.el
(defun vc-hg-workfile-unchanged-p (file)
(eq 'up-to-date (vc-hg-state file)))
;; Modelled after the similar function in vc-bzr.el
(defun vc-hg-revert (file &optional contents-done)
(unless contents-done
(with-temp-buffer (vc-hg-command t 0 file "revert"))))
;;; Hg specific functionality.
;; XXX This functionality is experimental/work in progress. It might
;; change without notice.
(defvar vc-hg-extra-menu-map
(let ((map (make-sparse-keymap)))
(define-key map [incoming] '(menu-item "Show incoming" vc-hg-incoming))
(define-key map [outgoing] '(menu-item "Show outgoing" vc-hg-outgoing))
map))
(defun vc-hg-extra-menu () vc-hg-extra-menu-map)
(defun vc-hg-extra-status-menu () vc-hg-extra-menu-map)
(define-derived-mode vc-hg-outgoing-mode vc-hg-log-view-mode "Hg-Outgoing")
(define-derived-mode vc-hg-incoming-mode vc-hg-log-view-mode "Hg-Incoming")
;; XXX Experimental function for the vc-dired replacement.
(defun vc-hg-after-dir-status (update-function status-buffer)
(let ((status-char nil)
(file nil)
(translation '((?= . up-to-date)
(?C . up-to-date)
(?A . added)
(?R . removed)
(?M . edited)
(?I . ignored)
(?! . missing)
(?? . unregistered)))
(translated nil)
(result nil))
(goto-char (point-min))
(while (not (eobp))
(setq status-char (char-after))
(setq file
(buffer-substring-no-properties (+ (point) 2)
(line-end-position)))
(setq translated (assoc status-char translation))
(when (and translated (not (eq (cdr translated) 'up-to-date)))
(push (cons file (cdr translated)) result))
(forward-line))
(funcall update-function result status-buffer)))
;; XXX Experimental function for the vc-dired replacement.
(defun vc-hg-dir-status (dir update-function status-buffer)
"Return a list of conses (file . state) for DIR."
(erase-buffer)
(vc-hg-command (current-buffer) 'async dir "status")
(vc-exec-after
`(vc-hg-after-dir-status (quote ,update-function) ,status-buffer)))
;; XXX this adds another top level menu, instead figure out how to
;; replace the Log-View menu.
(easy-menu-define log-view-mode-menu vc-hg-outgoing-mode-map
"Hg-outgoing Display Menu"
`("Hg-outgoing"
["Push selected" vc-hg-push]))
(easy-menu-define log-view-mode-menu vc-hg-incoming-mode-map
"Hg-incoming Display Menu"
`("Hg-incoming"
["Pull selected" vc-hg-pull]))
(defun vc-hg-outgoing ()
(interactive)
(let ((bname "*Hg outgoing*"))
(vc-hg-command bname 0 nil "outgoing" "-n")
(pop-to-buffer bname)
(vc-hg-outgoing-mode)))
(defun vc-hg-incoming ()
(interactive)
(let ((bname "*Hg incoming*"))
(vc-hg-command bname 0 nil "incoming" "-n")
(pop-to-buffer bname)
(vc-hg-incoming-mode)))
(declare-function log-view-get-marked "log-view" ())
;; XXX maybe also add key bindings for these functions.
(defun vc-hg-push ()
(interactive)
(let ((marked-list (log-view-get-marked)))
(if marked-list
(vc-hg-command
nil 0 nil
(cons "push"
(apply 'nconc
(mapcar (lambda (arg) (list "-r" arg)) marked-list))))
(error "No log entries selected for push"))))
(defun vc-hg-pull ()
(interactive)
(let ((marked-list (log-view-get-marked)))
(if marked-list
(vc-hg-command
nil 0 nil
(cons "pull"
(apply 'nconc
(mapcar (lambda (arg) (list "-r" arg)) marked-list))))
(error "No log entries selected for pull"))))
;;; Internal functions
(defun vc-hg-command (buffer okstatus file-or-list &rest flags)
"A wrapper around `vc-do-command' for use in vc-hg.el.
The difference to vc-do-command is that this function always invokes `hg',
and that it passes `vc-hg-global-switches' to it before FLAGS."
(apply 'vc-do-command buffer okstatus "hg" file-or-list
(if (stringp vc-hg-global-switches)
(cons vc-hg-global-switches flags)
(append vc-hg-global-switches
flags))))
(defun vc-hg-root (file)
(vc-find-root file ".hg"))
(provide 'vc-hg)
;; arch-tag: bd094dc5-715a-434f-a331-37b9fb7cd954
;;; vc-hg.el ends here