mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-27 07:37:33 +00:00
2517 lines
100 KiB
EmacsLisp
2517 lines
100 KiB
EmacsLisp
;;; vc.el --- drive a version-control system from within Emacs
|
||
|
||
;; Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000,
|
||
;; 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
|
||
;; Free Software Foundation, Inc.
|
||
|
||
;; Author: FSF (see below for full credits)
|
||
;; Maintainer: Andre Spiegel <spiegel@gnu.org>
|
||
;; 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/>.
|
||
|
||
;;; Credits:
|
||
|
||
;; VC was initially designed and implemented by Eric S. Raymond
|
||
;; <esr@thyrsus.com> in 1992. Over the years, many other people have
|
||
;; contributed substantial amounts of work to VC. These include:
|
||
;;
|
||
;; Per Cederqvist <ceder@lysator.liu.se>
|
||
;; Paul Eggert <eggert@twinsun.com>
|
||
;; Sebastian Kremer <sk@thp.uni-koeln.de>
|
||
;; Martin Lorentzson <martinl@gnu.org>
|
||
;; Dave Love <fx@gnu.org>
|
||
;; Stefan Monnier <monnier@cs.yale.edu>
|
||
;; Thien-Thi Nguyen <ttn@gnu.org>
|
||
;; Dan Nicolaescu <dann@ics.uci.edu>
|
||
;; J.D. Smith <jdsmith@alum.mit.edu>
|
||
;; Andre Spiegel <spiegel@gnu.org>
|
||
;; Richard Stallman <rms@gnu.org>
|
||
;;
|
||
;; In July 2007 ESR returned and redesigned the mode to cope better
|
||
;; with modern version-control systems that do commits by fileset
|
||
;; rather than per individual file.
|
||
;;
|
||
;; If you maintain a client of the mode or customize it in your .emacs,
|
||
;; note that some backend functions which formerly took single file arguments
|
||
;; now take a list of files. These include: register, checkin, print-log,
|
||
;; rollback, and diff.
|
||
|
||
;;; Commentary:
|
||
|
||
;; This mode is fully documented in the Emacs user's manual.
|
||
;;
|
||
;; Supported version-control systems presently include CVS, RCS, GNU
|
||
;; Arch, Subversion, Bzr, Git, Mercurial, Monotone and SCCS
|
||
;; (or its free replacement, CSSC).
|
||
;;
|
||
;; If your site uses the ChangeLog convention supported by Emacs, the
|
||
;; function `log-edit-comment-to-change-log' could prove a useful checkin hook,
|
||
;; although you might prefer to use C-c C-a (i.e. `log-edit-insert-changelog')
|
||
;; from the commit buffer instead or to set `log-edit-setup-invert'.
|
||
;;
|
||
;; The vc code maintains some internal state in order to reduce expensive
|
||
;; version-control operations to a minimum. Some names are only computed
|
||
;; once. If you perform version control operations with the backend while
|
||
;; vc's back is turned, or move/rename master files while vc is running,
|
||
;; vc may get seriously confused. Don't do these things!
|
||
;;
|
||
;; ADDING SUPPORT FOR OTHER BACKENDS
|
||
;;
|
||
;; VC can use arbitrary version control systems as a backend. To add
|
||
;; support for a new backend named SYS, write a library vc-sys.el that
|
||
;; contains functions of the form `vc-sys-...' (note that SYS is in lower
|
||
;; case for the function and library names). VC will use that library if
|
||
;; you put the symbol SYS somewhere into the list of
|
||
;; `vc-handled-backends'. Then, for example, if `vc-sys-registered'
|
||
;; returns non-nil for a file, all SYS-specific versions of VC commands
|
||
;; will be available for that file.
|
||
;;
|
||
;; VC keeps some per-file information in the form of properties (see
|
||
;; vc-file-set/getprop in vc-hooks.el). The backend-specific functions
|
||
;; do not generally need to be aware of these properties. For example,
|
||
;; `vc-sys-working-revision' should compute the working revision and
|
||
;; return it; it should not look it up in the property, and it needn't
|
||
;; store it there either. However, if a backend-specific function does
|
||
;; store a value in a property, that value takes precedence over any
|
||
;; value that the generic code might want to set (check for uses of
|
||
;; the macro `with-vc-properties' in vc.el).
|
||
;;
|
||
;; In the list of functions below, each identifier needs to be prepended
|
||
;; with `vc-sys-'. Some of the functions are mandatory (marked with a
|
||
;; `*'), others are optional (`-').
|
||
;;
|
||
;; BACKEND PROPERTIES
|
||
;;
|
||
;; * revision-granularity
|
||
;;
|
||
;; Takes no arguments. Returns either 'file or 'repository. Backends
|
||
;; that return 'file have per-file revision numbering; backends
|
||
;; that return 'repository have per-repository revision numbering,
|
||
;; so a revision level implicitly identifies a changeset
|
||
;;
|
||
;; STATE-QUERYING FUNCTIONS
|
||
;;
|
||
;; * registered (file)
|
||
;;
|
||
;; Return non-nil if FILE is registered in this backend. Both this
|
||
;; function as well as `state' should be careful to fail gracefully
|
||
;; in the event that the backend executable is absent. It is
|
||
;; preferable that this function's body is autoloaded, that way only
|
||
;; calling vc-registered does not cause the backend to be loaded
|
||
;; (all the vc-FOO-registered functions are called to try to find
|
||
;; the controlling backend for FILE.
|
||
;;
|
||
;; * state (file)
|
||
;;
|
||
;; Return the current version control state of FILE. For a list of
|
||
;; possible values, see `vc-state'. This function should do a full and
|
||
;; reliable state computation; it is usually called immediately after
|
||
;; C-x v v. If you want to use a faster heuristic when visiting a
|
||
;; file, put that into `state-heuristic' below. Note that under most
|
||
;; VCSes this won't be called at all, dir-status is used instead.
|
||
;;
|
||
;; - state-heuristic (file)
|
||
;;
|
||
;; If provided, this function is used to estimate the version control
|
||
;; state of FILE at visiting time. It should be considerably faster
|
||
;; than the implementation of `state'. For a list of possible values,
|
||
;; see the doc string of `vc-state'.
|
||
;;
|
||
;; - dir-status (dir update-function)
|
||
;;
|
||
;; Produce RESULT: a list of lists of the form (FILE VC-STATE EXTRA)
|
||
;; for the files in DIR.
|
||
;; EXTRA can be used for backend specific information about FILE.
|
||
;; If a command needs to be run to compute this list, it should be
|
||
;; run asynchronously using (current-buffer) as the buffer for the
|
||
;; command. When RESULT is computed, it should be passed back by
|
||
;; doing: (funcall UPDATE-FUNCTION RESULT nil).
|
||
;; If the backend uses a process filter, hence it produces partial results,
|
||
;; they can be passed back by doing:
|
||
;; (funcall UPDATE-FUNCTION RESULT t)
|
||
;; and then do a (funcall UPDATE-FUNCTION RESULT nil)
|
||
;; when all the results have been computed.
|
||
;; To provide more backend specific functionality for `vc-dir'
|
||
;; the following functions might be needed: `dir-extra-headers',
|
||
;; `dir-printer', `extra-dir-menu' and `dir-status-files'.
|
||
;;
|
||
;; - dir-status-files (dir files default-state update-function)
|
||
;;
|
||
;; This function is identical to dir-status except that it should
|
||
;; only report status for the specified FILES. Also it needs to
|
||
;; report on all requested files, including up-to-date or ignored
|
||
;; files. If not provided, the default is to consider that the files
|
||
;; are in DEFAULT-STATE.
|
||
;;
|
||
;; - dir-extra-headers (dir)
|
||
;;
|
||
;; Return a string that will be added to the *vc-dir* buffer header.
|
||
;;
|
||
;; - dir-printer (fileinfo)
|
||
;;
|
||
;; Pretty print the `vc-dir-fileinfo' FILEINFO.
|
||
;; If a backend needs to show more information than the default FILE
|
||
;; and STATE in the vc-dir listing, it can store that extra
|
||
;; information in `vc-dir-fileinfo->extra'. This function can be
|
||
;; used to display that extra information in the *vc-dir* buffer.
|
||
;;
|
||
;; - status-fileinfo-extra (file)
|
||
;;
|
||
;; Compute `vc-dir-fileinfo->extra' for FILE.
|
||
;;
|
||
;; * working-revision (file)
|
||
;;
|
||
;; Return the working revision of FILE. This is the revision fetched
|
||
;; by the last checkout or upate, not necessarily the same thing as the
|
||
;; head or tip revision. Should return "0" for a file added but not yet
|
||
;; committed.
|
||
;;
|
||
;; - latest-on-branch-p (file)
|
||
;;
|
||
;; Return non-nil if the working revision of FILE is the latest revision
|
||
;; on its branch (many VCSes call this the 'tip' or 'head' revision).
|
||
;; The default implementation always returns t, which means that
|
||
;; working with non-current revisions is not supported by default.
|
||
;;
|
||
;; * checkout-model (files)
|
||
;;
|
||
;; Indicate whether FILES need to be "checked out" before they can be
|
||
;; edited. See `vc-checkout-model' for a list of possible values.
|
||
;;
|
||
;; - workfile-unchanged-p (file)
|
||
;;
|
||
;; Return non-nil if FILE is unchanged from the working revision.
|
||
;; This function should do a brief comparison of FILE's contents
|
||
;; with those of the repository master of the working revision. If
|
||
;; the backend does not have such a brief-comparison feature, the
|
||
;; default implementation of this function can be used, which
|
||
;; delegates to a full vc-BACKEND-diff. (Note that vc-BACKEND-diff
|
||
;; must not run asynchronously in this case, see variable
|
||
;; `vc-disable-async-diff'.)
|
||
;;
|
||
;; - mode-line-string (file)
|
||
;;
|
||
;; If provided, this function should return the VC-specific mode
|
||
;; line string for FILE. The returned string should have a
|
||
;; `help-echo' property which is the text to be displayed as a
|
||
;; tooltip when the mouse hovers over the VC entry on the mode-line.
|
||
;; The default implementation deals well with all states that
|
||
;; `vc-state' can return.
|
||
;;
|
||
;; STATE-CHANGING FUNCTIONS
|
||
;;
|
||
;; * create-repo (backend)
|
||
;;
|
||
;; Create an empty repository in the current directory and initialize
|
||
;; it so VC mode can add files to it. For file-oriented systems, this
|
||
;; need do no more than create a subdirectory with the right name.
|
||
;;
|
||
;; * register (files &optional rev comment)
|
||
;;
|
||
;; Register FILES in this backend. Optionally, an initial revision REV
|
||
;; and an initial description of the file, COMMENT, may be specified,
|
||
;; but it is not guaranteed that the backend will do anything with this.
|
||
;; The implementation should pass the value of vc-register-switches
|
||
;; to the backend command. (Note: in older versions of VC, this
|
||
;; command took a single file argument and not a list.)
|
||
;;
|
||
;; - init-revision (file)
|
||
;;
|
||
;; The initial revision to use when registering FILE if one is not
|
||
;; specified by the user. If not provided, the variable
|
||
;; vc-default-init-revision is used instead.
|
||
;;
|
||
;; - responsible-p (file)
|
||
;;
|
||
;; Return non-nil if this backend considers itself "responsible" for
|
||
;; FILE, which can also be a directory. This function is used to find
|
||
;; out what backend to use for registration of new files and for things
|
||
;; like change log generation. The default implementation always
|
||
;; returns nil.
|
||
;;
|
||
;; - could-register (file)
|
||
;;
|
||
;; Return non-nil if FILE could be registered under this backend. The
|
||
;; default implementation always returns t.
|
||
;;
|
||
;; - receive-file (file rev)
|
||
;;
|
||
;; Let this backend "receive" a file that is already registered under
|
||
;; another backend. The default implementation simply calls `register'
|
||
;; for FILE, but it can be overridden to do something more specific,
|
||
;; e.g. keep revision numbers consistent or choose editing modes for
|
||
;; FILE that resemble those of the other backend.
|
||
;;
|
||
;; - unregister (file)
|
||
;;
|
||
;; Unregister FILE from this backend. This is only needed if this
|
||
;; backend may be used as a "more local" backend for temporary editing.
|
||
;;
|
||
;; * checkin (files rev comment)
|
||
;;
|
||
;; Commit changes in FILES to this backend. If REV is non-nil, that
|
||
;; should become the new revision number (not all backends do
|
||
;; anything with it). COMMENT is used as a check-in comment. The
|
||
;; implementation should pass the value of vc-checkin-switches to
|
||
;; the backend command. (Note: in older versions of VC, this
|
||
;; command took a single file argument and not a list.)
|
||
;;
|
||
;; * find-revision (file rev buffer)
|
||
;;
|
||
;; Fetch revision REV of file FILE and put it into BUFFER.
|
||
;; If REV is the empty string, fetch the head of the trunk.
|
||
;; The implementation should pass the value of vc-checkout-switches
|
||
;; to the backend command.
|
||
;;
|
||
;; * checkout (file &optional editable rev)
|
||
;;
|
||
;; Check out revision REV of FILE into the working area. If EDITABLE
|
||
;; is non-nil, FILE should be writable by the user and if locking is
|
||
;; used for FILE, a lock should also be set. If REV is non-nil, that
|
||
;; is the revision to check out (default is the working revision).
|
||
;; If REV is t, that means to check out the head of the current branch;
|
||
;; if it is the empty string, check out the head of the trunk.
|
||
;; The implementation should pass the value of vc-checkout-switches
|
||
;; to the backend command.
|
||
;;
|
||
;; * revert (file &optional contents-done)
|
||
;;
|
||
;; Revert FILE back to the working revision. If optional
|
||
;; arg CONTENTS-DONE is non-nil, then the contents of FILE have
|
||
;; already been reverted from a version backup, and this function
|
||
;; only needs to update the status of FILE within the backend.
|
||
;; If FILE is in the `added' state it should be returned to the
|
||
;; `unregistered' state.
|
||
;;
|
||
;; - rollback (files)
|
||
;;
|
||
;; Remove the tip revision of each of FILES from the repository. If
|
||
;; this function is not provided, trying to cancel a revision is
|
||
;; caught as an error. (Most backends don't provide it.) (Also
|
||
;; note that older versions of this backend command were called
|
||
;; 'cancel-version' and took a single file arg, not a list of
|
||
;; files.)
|
||
;;
|
||
;; - merge (file rev1 rev2)
|
||
;;
|
||
;; Merge the changes between REV1 and REV2 into the current working file.
|
||
;;
|
||
;; - merge-news (file)
|
||
;;
|
||
;; Merge recent changes from the current branch into FILE.
|
||
;;
|
||
;; - steal-lock (file &optional revision)
|
||
;;
|
||
;; Steal any lock on the working revision of FILE, or on REVISION if
|
||
;; that is provided. This function is only needed if locking is
|
||
;; used for files under this backend, and if files can indeed be
|
||
;; locked by other users.
|
||
;;
|
||
;; - modify-change-comment (files rev comment)
|
||
;;
|
||
;; Modify the change comments associated with the files at the
|
||
;; given revision. This is optional, many backends do not support it.
|
||
;;
|
||
;; - mark-resolved (files)
|
||
;;
|
||
;; Mark conflicts as resolved. Some VC systems need to run a
|
||
;; command to mark conflicts as resolved.
|
||
;;
|
||
;; HISTORY FUNCTIONS
|
||
;;
|
||
;; * print-log (files buffer &optional shortlog limit)
|
||
;;
|
||
;; Insert the revision log for FILES into BUFFER.
|
||
;; If SHORTLOG is true insert a short version of the log.
|
||
;; If LIMIT is true insert only insert LIMIT log entries. If the
|
||
;; backend does not support limiting the number of entries to show
|
||
;; it should return `limit-unsupported'.
|
||
;;
|
||
;; - log-view-mode ()
|
||
;;
|
||
;; Mode to use for the output of print-log. This defaults to
|
||
;; `log-view-mode' and is expected to be changed (if at all) to a derived
|
||
;; mode of `log-view-mode'.
|
||
;;
|
||
;; - show-log-entry (revision)
|
||
;;
|
||
;; If provided, search the log entry for REVISION in the current buffer,
|
||
;; and make sure it is displayed in the buffer's window. The default
|
||
;; implementation of this function works for RCS-style logs.
|
||
;;
|
||
;; - comment-history (file)
|
||
;;
|
||
;; Return a string containing all log entries that were made for FILE.
|
||
;; This is used for transferring a file from one backend to another,
|
||
;; retaining comment information.
|
||
;;
|
||
;; - update-changelog (files)
|
||
;;
|
||
;; Using recent log entries, create ChangeLog entries for FILES, or for
|
||
;; all files at or below the default-directory if FILES is nil. The
|
||
;; default implementation runs rcs2log, which handles RCS- and
|
||
;; CVS-style logs.
|
||
;;
|
||
;; * diff (files &optional rev1 rev2 buffer)
|
||
;;
|
||
;; Insert the diff for FILE into BUFFER, or the *vc-diff* buffer if
|
||
;; BUFFER is nil. If REV1 and REV2 are non-nil, report differences
|
||
;; from REV1 to REV2. If REV1 is nil, use the working revision (as
|
||
;; found in the repository) as the older revision; if REV2 is nil,
|
||
;; use the current working-copy contents as the newer revision. This
|
||
;; function should pass the value of (vc-switches BACKEND 'diff) to
|
||
;; the backend command. It should return a status of either 0 (no
|
||
;; differences found), or 1 (either non-empty diff or the diff is
|
||
;; run asynchronously).
|
||
;;
|
||
;; - revision-completion-table (files)
|
||
;;
|
||
;; Return a completion table for existing revisions of FILES.
|
||
;; The default is to not use any completion table.
|
||
;;
|
||
;; - annotate-command (file buf &optional rev)
|
||
;;
|
||
;; If this function is provided, it should produce an annotated display
|
||
;; of FILE in BUF, relative to revision REV. Annotation means each line
|
||
;; of FILE displayed is prefixed with version information associated with
|
||
;; its addition (deleted lines leave no history) and that the text of the
|
||
;; file is fontified according to age.
|
||
;;
|
||
;; - annotate-time ()
|
||
;;
|
||
;; Only required if `annotate-command' is defined for the backend.
|
||
;; Return the time of the next line of annotation at or after point,
|
||
;; as a floating point fractional number of days. The helper
|
||
;; function `vc-annotate-convert-time' may be useful for converting
|
||
;; multi-part times as returned by `current-time' and `encode-time'
|
||
;; to this format. Return nil if no more lines of annotation appear
|
||
;; in the buffer. You can safely assume that point is placed at the
|
||
;; beginning of each line, starting at `point-min'. The buffer that
|
||
;; point is placed in is the Annotate output, as defined by the
|
||
;; relevant backend. This function also affects how much of the line
|
||
;; is fontified; where it leaves point is where fontification begins.
|
||
;;
|
||
;; - annotate-current-time ()
|
||
;;
|
||
;; Only required if `annotate-command' is defined for the backend,
|
||
;; AND you'd like the current time considered to be anything besides
|
||
;; (vc-annotate-convert-time (current-time)) -- i.e. the current
|
||
;; time with hours, minutes, and seconds included. Probably safe to
|
||
;; ignore. Return the current-time, in units of fractional days.
|
||
;;
|
||
;; - annotate-extract-revision-at-line ()
|
||
;;
|
||
;; Only required if `annotate-command' is defined for the backend.
|
||
;; Invoked from a buffer in vc-annotate-mode, return the revision
|
||
;; corresponding to the current line, or nil if there is no revision
|
||
;; corresponding to the current line.
|
||
;; If the backend supports annotating through copies and renames,
|
||
;; and displays a file name and a revision, then return a cons
|
||
;; (REVISION . FILENAME).
|
||
;;
|
||
;; TAG SYSTEM
|
||
;;
|
||
;; - create-tag (dir name branchp)
|
||
;;
|
||
;; Attach the tag NAME to the state of the working copy. This
|
||
;; should make sure that files are up-to-date before proceeding with
|
||
;; the action. DIR can also be a file and if BRANCHP is specified,
|
||
;; NAME should be created as a branch and DIR should be checked out
|
||
;; under this new branch. The default implementation does not
|
||
;; support branches but does a sanity check, a tree traversal and
|
||
;; assigns the tag to each file.
|
||
;;
|
||
;; - retrieve-tag (dir name update)
|
||
;;
|
||
;; Retrieve the version tagged by NAME of all registered files at or below DIR.
|
||
;; If UPDATE is non-nil, then update buffers of any files in the
|
||
;; tag that are currently visited. The default implementation
|
||
;; does a sanity check whether there aren't any uncommitted changes at
|
||
;; or below DIR, and then performs a tree walk, using the `checkout'
|
||
;; function to retrieve the corresponding revisions.
|
||
;;
|
||
;; MISCELLANEOUS
|
||
;;
|
||
;; - make-version-backups-p (file)
|
||
;;
|
||
;; Return non-nil if unmodified repository revisions of FILE should be
|
||
;; backed up locally. If this is done, VC can perform `diff' and
|
||
;; `revert' operations itself, without calling the backend system. The
|
||
;; default implementation always returns nil.
|
||
;;
|
||
;; - root (file)
|
||
;; Return the root of the VC controlled hierarchy for file.
|
||
;;
|
||
;; - repository-hostname (dirname)
|
||
;;
|
||
;; Return the hostname that the backend will have to contact
|
||
;; in order to operate on a file in DIRNAME. If the return value
|
||
;; is nil, it means that the repository is local.
|
||
;; This function is used in `vc-stay-local-p' which backends can use
|
||
;; for their convenience.
|
||
;;
|
||
;; - previous-revision (file rev)
|
||
;;
|
||
;; Return the revision number that precedes REV for FILE, or nil if no such
|
||
;; revision exists.
|
||
;;
|
||
;; - next-revision (file rev)
|
||
;;
|
||
;; Return the revision number that follows REV for FILE, or nil if no such
|
||
;; revision exists.
|
||
;;
|
||
;; - check-headers ()
|
||
;;
|
||
;; Return non-nil if the current buffer contains any version headers.
|
||
;;
|
||
;; - clear-headers ()
|
||
;;
|
||
;; In the current buffer, reset all version headers to their unexpanded
|
||
;; form. This function should be provided if the state-querying code
|
||
;; for this backend uses the version headers to determine the state of
|
||
;; a file. This function will then be called whenever VC changes the
|
||
;; version control state in such a way that the headers would give
|
||
;; wrong information.
|
||
;;
|
||
;; - delete-file (file)
|
||
;;
|
||
;; Delete FILE and mark it as deleted in the repository. If this
|
||
;; function is not provided, the command `vc-delete-file' will
|
||
;; signal an error.
|
||
;;
|
||
;; - rename-file (old new)
|
||
;;
|
||
;; Rename file OLD to NEW, both in the working area and in the
|
||
;; repository. If this function is not provided, the renaming
|
||
;; will be done by (vc-delete-file old) and (vc-register new).
|
||
;;
|
||
;; - find-file-hook ()
|
||
;;
|
||
;; Operation called in current buffer when opening a file. This can
|
||
;; be used by the backend to setup some local variables it might need.
|
||
;;
|
||
;; - extra-menu ()
|
||
;;
|
||
;; Return a menu keymap, the items in the keymap will appear at the
|
||
;; end of the Version Control menu. The goal is to allow backends
|
||
;; to specify extra menu items that appear in the VC menu. This way
|
||
;; you can provide menu entries for functionality that is specific
|
||
;; to your backend and which does not map to any of the VC generic
|
||
;; concepts.
|
||
;;
|
||
;; - extra-dir-menu ()
|
||
;;
|
||
;; Return a menu keymap, the items in the keymap will appear at the
|
||
;; end of the VC Status menu. The goal is to allow backends to
|
||
;; specify extra menu items that appear in the VC Status menu. This
|
||
;; makes it possible to provide menu entries for functionality that
|
||
;; is specific to a backend and which does not map to any of the VC
|
||
;; generic concepts.
|
||
|
||
;;; Todo:
|
||
|
||
;; - Get rid of the "master file" terminology.
|
||
|
||
;; - Add key-binding for vc-delete-file.
|
||
|
||
;;;; New Primitives:
|
||
;;
|
||
;; - deal with push/pull operations.
|
||
;;
|
||
;; - add a mechanism for editing the underlying VCS's list of files
|
||
;; to be ignored, when that's possible.
|
||
;;
|
||
;;;; Primitives that need changing:
|
||
;;
|
||
;; - vc-update/vc-merge should deal with VC systems that don't
|
||
;; update/merge on a file basis, but on a whole repository basis.
|
||
;; vc-update and vc-merge assume the arguments are always files,
|
||
;; they don't deal with directories. Make sure the *vc-dir* buffer
|
||
;; is updated after these operations.
|
||
;; At least bzr, git and hg should benefit from this.
|
||
;;
|
||
;;;; Improved branch and tag handling:
|
||
;;
|
||
;; - add a generic mechanism for remembering the current branch names,
|
||
;; display the branch name in the mode-line. Replace
|
||
;; vc-cvs-sticky-tag with that.
|
||
;;
|
||
;; - vc-create-tag and vc-retrieve-tag should update the
|
||
;; buffers that might be visiting the affected files.
|
||
;;
|
||
;;;; Internal cleanups:
|
||
;;
|
||
;; - backends that care about vc-stay-local should try to take it into
|
||
;; account for vc-dir. Is this likely to be useful??? YES!
|
||
;;
|
||
;; - vc-expand-dirs should take a backend parameter and only look for
|
||
;; files managed by that backend.
|
||
;;
|
||
;; - Another important thing: merge all the status-like backend operations.
|
||
;; We should remove dir-status, state, and dir-status-files, and
|
||
;; replace them with just `status' which takes a fileset and a continuation
|
||
;; (like dir-status) and returns a buffer in which the process(es) are run
|
||
;; (or nil if it worked synchronously). Hopefully we can define the old
|
||
;; 4 operations in term of this one.
|
||
;;
|
||
;;;; Other
|
||
;;
|
||
;; - when a file is in `conflict' state, turn on smerge-mode.
|
||
;;
|
||
;; - figure out what to do with conflicts that are not caused by the
|
||
;; file contents, but by metadata or other causes. Example: File A
|
||
;; gets renamed to B in one branch and to C in another and you merge
|
||
;; the two branches. Or you locally add file FOO and then pull a
|
||
;; change that also adds a new file FOO, ...
|
||
;;
|
||
;; - make it easier to write logs. Maybe C-x 4 a should add to the log
|
||
;; buffer, if one is present, instead of adding to the ChangeLog.
|
||
;;
|
||
;; - When vc-next-action calls vc-checkin it could pre-fill the
|
||
;; *VC-log* buffer with some obvious items: the list of files that
|
||
;; were added, the list of files that were removed. If the diff is
|
||
;; available, maybe it could even call something like
|
||
;; `diff-add-change-log-entries-other-window' to create a detailed
|
||
;; skeleton for the log...
|
||
;;
|
||
;; - most vc-dir backends need more work. They might need to
|
||
;; provide custom headers, use the `extra' field and deal with all
|
||
;; possible VC states.
|
||
;;
|
||
;; - add a function that calls vc-dir to `find-directory-functions'.
|
||
;;
|
||
;; - vc-diff, vc-annotate, etc. need to deal better with unregistered
|
||
;; files. Now that unregistered and ignored files are shown in
|
||
;; vc-dir, it is possible that these commands are called
|
||
;; for unregistered/ignored files.
|
||
;;
|
||
;; - vc-next-action needs work in order to work with multiple
|
||
;; backends: `vc-state' returns the state for the default backend,
|
||
;; not for the backend in the current *vc-dir* buffer.
|
||
;;
|
||
;; - vc-dir-kill-dir-status-process should not be specific to dir-status,
|
||
;; it should work for other async commands done through vc-do-command
|
||
;; as well,
|
||
;;
|
||
;; - vc-dir toolbar needs more icons.
|
||
;;
|
||
;; - The backends should avoid using `vc-file-setprop' and `vc-file-getprop'.
|
||
;;
|
||
;;; Code:
|
||
|
||
(require 'vc-hooks)
|
||
(require 'vc-dispatcher)
|
||
|
||
(eval-when-compile
|
||
(require 'cl)
|
||
(require 'dired))
|
||
|
||
(unless (assoc 'vc-parent-buffer minor-mode-alist)
|
||
(setq minor-mode-alist
|
||
(cons '(vc-parent-buffer vc-parent-buffer-name)
|
||
minor-mode-alist)))
|
||
|
||
;; General customization
|
||
|
||
(defgroup vc nil
|
||
"Version-control system in Emacs."
|
||
:group 'tools)
|
||
|
||
(defcustom vc-initial-comment nil
|
||
"If non-nil, prompt for initial comment when a file is registered."
|
||
:type 'boolean
|
||
:group 'vc)
|
||
|
||
(defcustom vc-default-init-revision "1.1"
|
||
"A string used as the default revision number when a new file is registered.
|
||
This can be overridden by giving a prefix argument to \\[vc-register]. This
|
||
can also be overridden by a particular VC backend."
|
||
:type 'string
|
||
:group 'vc
|
||
:version "20.3")
|
||
|
||
(defcustom vc-checkin-switches nil
|
||
"A string or list of strings specifying extra switches for checkin.
|
||
These are passed to the checkin program by \\[vc-checkin]."
|
||
:type '(choice (const :tag "None" nil)
|
||
(string :tag "Argument String")
|
||
(repeat :tag "Argument List"
|
||
:value ("")
|
||
string))
|
||
:group 'vc)
|
||
|
||
(defcustom vc-checkout-switches nil
|
||
"A string or list of strings specifying extra switches for checkout.
|
||
These are passed to the checkout program by \\[vc-checkout]."
|
||
:type '(choice (const :tag "None" nil)
|
||
(string :tag "Argument String")
|
||
(repeat :tag "Argument List"
|
||
:value ("")
|
||
string))
|
||
:group 'vc)
|
||
|
||
(defcustom vc-register-switches nil
|
||
"A string or list of strings; extra switches for registering a file.
|
||
These are passed to the checkin program by \\[vc-register]."
|
||
:type '(choice (const :tag "None" nil)
|
||
(string :tag "Argument String")
|
||
(repeat :tag "Argument List"
|
||
:value ("")
|
||
string))
|
||
:group 'vc)
|
||
|
||
(defcustom vc-diff-switches nil
|
||
"A string or list of strings specifying switches for diff under VC.
|
||
When running diff under a given BACKEND, VC uses the first
|
||
non-nil value of `vc-BACKEND-diff-switches', `vc-diff-switches',
|
||
and `diff-switches', in that order. Since nil means to check the
|
||
next variable in the sequence, either of the first two may use
|
||
the value t to mean no switches at all. `vc-diff-switches'
|
||
should contain switches that are specific to version control, but
|
||
not specific to any particular backend."
|
||
:type '(choice (const :tag "Unspecified" nil)
|
||
(const :tag "None" t)
|
||
(string :tag "Argument String")
|
||
(repeat :tag "Argument List" :value ("") string))
|
||
:group 'vc
|
||
:version "21.1")
|
||
|
||
(defcustom vc-diff-knows-L nil
|
||
"Indicates whether diff understands the -L option.
|
||
The value is either `yes', `no', or nil. If it is nil, VC tries
|
||
to use -L and sets this variable to remember whether it worked."
|
||
:type '(choice (const :tag "Work out" nil) (const yes) (const no))
|
||
:group 'vc)
|
||
|
||
(defcustom vc-log-show-limit 2000
|
||
"Limit the number of items shown by the VC log commands.
|
||
Zero means unlimited.
|
||
Not all VC backends are able to support this feature."
|
||
:type 'integer
|
||
:group 'vc)
|
||
|
||
(defcustom vc-allow-async-revert nil
|
||
"Specifies whether the diff during \\[vc-revert] may be asynchronous.
|
||
Enabling this option means that you can confirm a revert operation even
|
||
if the local changes in the file have not been found and displayed yet."
|
||
:type '(choice (const :tag "No" nil)
|
||
(const :tag "Yes" t))
|
||
:group 'vc
|
||
:version "22.1")
|
||
|
||
;;;###autoload
|
||
(defcustom vc-checkout-hook nil
|
||
"Normal hook (list of functions) run after checking out a file.
|
||
See `run-hooks'."
|
||
:type 'hook
|
||
:group 'vc
|
||
:version "21.1")
|
||
|
||
;;;###autoload
|
||
(defcustom vc-checkin-hook nil
|
||
"Normal hook (list of functions) run after commit or file checkin.
|
||
See also `log-edit-done-hook'."
|
||
:type 'hook
|
||
:options '(log-edit-comment-to-change-log)
|
||
:group 'vc)
|
||
|
||
;;;###autoload
|
||
(defcustom vc-before-checkin-hook nil
|
||
"Normal hook (list of functions) run before a commit or a file checkin.
|
||
See `run-hooks'."
|
||
:type 'hook
|
||
:group 'vc)
|
||
|
||
;; Header-insertion hair
|
||
|
||
(defcustom vc-static-header-alist
|
||
'(("\\.c\\'" .
|
||
"\n#ifndef lint\nstatic char vcid[] = \"\%s\";\n#endif /* lint */\n"))
|
||
"Associate static header string templates with file types.
|
||
A \%s in the template is replaced with the first string associated with
|
||
the file's version control type in `vc-header-alist'."
|
||
:type '(repeat (cons :format "%v"
|
||
(regexp :tag "File Type")
|
||
(string :tag "Header String")))
|
||
:group 'vc)
|
||
|
||
(defcustom vc-comment-alist
|
||
'((nroff-mode ".\\\"" ""))
|
||
"Special comment delimiters for generating VC headers.
|
||
Add an entry in this list if you need to override the normal `comment-start'
|
||
and `comment-end' variables. This will only be necessary if the mode language
|
||
is sensitive to blank lines."
|
||
:type '(repeat (list :format "%v"
|
||
(symbol :tag "Mode")
|
||
(string :tag "Comment Start")
|
||
(string :tag "Comment End")))
|
||
:group 'vc)
|
||
|
||
(defcustom vc-checkout-carefully (= (user-uid) 0)
|
||
"Non-nil means be extra-careful in checkout.
|
||
Verify that the file really is not locked
|
||
and that its contents match what the master file says."
|
||
:type 'boolean
|
||
:group 'vc)
|
||
(make-obsolete-variable 'vc-checkout-carefully
|
||
"the corresponding checks are always done now."
|
||
"21.1")
|
||
|
||
|
||
;; Variables users don't need to see
|
||
|
||
(defvar vc-disable-async-diff nil
|
||
"VC sets this to t locally to disable some async diff operations.
|
||
Backends that offer asynchronous diffs should respect this variable
|
||
in their implementation of vc-BACKEND-diff.")
|
||
|
||
;; File property caching
|
||
|
||
(defun vc-clear-context ()
|
||
"Clear all cached file properties."
|
||
(interactive)
|
||
(fillarray vc-file-prop-obarray 0))
|
||
|
||
(defmacro with-vc-properties (files form settings)
|
||
"Execute FORM, then maybe set per-file properties for FILES.
|
||
SETTINGS is an association list of property/value pairs. After
|
||
executing FORM, set those properties from SETTINGS that have not yet
|
||
been updated to their corresponding values."
|
||
(declare (debug t))
|
||
`(let ((vc-touched-properties (list t)))
|
||
,form
|
||
(dolist (file ,files)
|
||
(dolist (setting ,settings)
|
||
(let ((property (car setting)))
|
||
(unless (memq property vc-touched-properties)
|
||
(put (intern file vc-file-prop-obarray)
|
||
property (cdr setting))))))))
|
||
|
||
;;; Code for deducing what fileset and backend to assume
|
||
|
||
(defun vc-backend-for-registration (file)
|
||
"Return a backend that can be used for registering FILE.
|
||
|
||
If no backend declares itself responsible for FILE, then FILE
|
||
must not be in a version controlled directory, so try to create a
|
||
repository, prompting for the directory and the VC backend to
|
||
use."
|
||
(catch 'found
|
||
;; First try: find a responsible backend, it must be a backend
|
||
;; under which FILE is not yet registered.
|
||
(dolist (backend vc-handled-backends)
|
||
(and (not (vc-call-backend backend 'registered file))
|
||
(vc-call-backend backend 'responsible-p file)
|
||
(throw 'found backend)))
|
||
;; no responsible backend
|
||
(let* ((possible-backends
|
||
(let (pos)
|
||
(dolist (crt vc-handled-backends)
|
||
(when (vc-find-backend-function crt 'create-repo)
|
||
(push crt pos)))
|
||
pos))
|
||
(bk
|
||
(intern
|
||
;; Read the VC backend from the user, only
|
||
;; complete with the backends that have the
|
||
;; 'create-repo method.
|
||
(completing-read
|
||
(format "%s is not in a version controlled directory.\nUse VC backend: " file)
|
||
(mapcar 'symbol-name possible-backends) nil t)))
|
||
(repo-dir
|
||
(let ((def-dir (file-name-directory file)))
|
||
;; read the directory where to create the
|
||
;; repository, make sure it's a parent of
|
||
;; file.
|
||
(read-file-name
|
||
(format "create %s repository in: " bk)
|
||
default-directory def-dir t nil
|
||
(lambda (arg)
|
||
(message "arg %s" arg)
|
||
(and (file-directory-p arg)
|
||
(vc-string-prefix-p (expand-file-name arg) def-dir)))))))
|
||
(let ((default-directory repo-dir))
|
||
(vc-call-backend bk 'create-repo))
|
||
(throw 'found bk))))
|
||
|
||
(defun vc-responsible-backend (file)
|
||
"Return the name of a backend system that is responsible for FILE.
|
||
|
||
If FILE is already registered, return the
|
||
backend of FILE. If FILE is not registered, then the
|
||
first backend in `vc-handled-backends' that declares itself
|
||
responsible for FILE is returned."
|
||
(or (and (not (file-directory-p file)) (vc-backend file))
|
||
(catch 'found
|
||
;; First try: find a responsible backend. If this is for registration,
|
||
;; it must be a backend under which FILE is not yet registered.
|
||
(dolist (backend vc-handled-backends)
|
||
(and (vc-call-backend backend 'responsible-p file)
|
||
(throw 'found backend))))
|
||
(error "No VC backend is responsible for %s" file)))
|
||
|
||
(defun vc-expand-dirs (file-or-dir-list)
|
||
"Expands directories in a file list specification.
|
||
Within directories, only files already under version control are noticed."
|
||
(let ((flattened '()))
|
||
(dolist (node file-or-dir-list)
|
||
(when (file-directory-p node)
|
||
(vc-file-tree-walk
|
||
node (lambda (f) (when (vc-backend f) (push f flattened)))))
|
||
(unless (file-directory-p node) (push node flattened)))
|
||
(nreverse flattened)))
|
||
|
||
(defvar vc-dir-backend)
|
||
|
||
(declare-function vc-dir-current-file "vc-dir" ())
|
||
(declare-function vc-dir-deduce-fileset "vc-dir" (&optional state-model-only-files))
|
||
|
||
(defun vc-deduce-fileset (&optional observer allow-unregistered
|
||
state-model-only-files)
|
||
"Deduce a set of files and a backend to which to apply an operation.
|
||
|
||
Return (BACKEND FILESET FILESET-ONLY-FILES STATE CHECKOUT-MODEL).
|
||
If we're in VC-dir mode, the fileset is the list of marked files.
|
||
Otherwise, if we're looking at a buffer visiting a version-controlled file,
|
||
the fileset is a singleton containing this file.
|
||
If none of these conditions is met, but ALLOW_UNREGISTERED is on and the
|
||
visited file is not registered, return a singleton fileset containing it.
|
||
Otherwise, throw an error.
|
||
|
||
STATE-MODEL-ONLY-FILES if non-nil, means that the caller needs
|
||
the FILESET-ONLY-FILES STATE and MODEL info. Otherwise, that
|
||
part may be skipped.
|
||
BEWARE: this function may change the
|
||
current buffer."
|
||
;; FIXME: OBSERVER is unused. The name is not intuitive and is not
|
||
;; documented. It's set to t when called from diff and print-log.
|
||
(let (backend)
|
||
(cond
|
||
((derived-mode-p 'vc-dir-mode)
|
||
(vc-dir-deduce-fileset state-model-only-files))
|
||
((derived-mode-p 'dired-mode)
|
||
(if observer
|
||
(vc-dired-deduce-fileset)
|
||
(error "State changing VC operations not supported in `dired-mode'")))
|
||
((setq backend (vc-backend buffer-file-name))
|
||
(if state-model-only-files
|
||
(list backend (list buffer-file-name)
|
||
(list buffer-file-name)
|
||
(vc-state buffer-file-name)
|
||
(vc-checkout-model backend buffer-file-name))
|
||
(list backend (list buffer-file-name))))
|
||
((and (buffer-live-p vc-parent-buffer)
|
||
;; FIXME: Why this test? --Stef
|
||
(or (buffer-file-name vc-parent-buffer)
|
||
(with-current-buffer vc-parent-buffer
|
||
(derived-mode-p 'vc-dir-mode))))
|
||
(progn ;FIXME: Why not `with-current-buffer'? --Stef.
|
||
(set-buffer vc-parent-buffer)
|
||
(vc-deduce-fileset observer allow-unregistered state-model-only-files)))
|
||
((not buffer-file-name)
|
||
(error "Buffer %s is not associated with a file" (buffer-name)))
|
||
((and allow-unregistered (not (vc-registered buffer-file-name)))
|
||
(if state-model-only-files
|
||
(list (vc-backend-for-registration (buffer-file-name))
|
||
(list buffer-file-name)
|
||
(list buffer-file-name)
|
||
(when state-model-only-files 'unregistered)
|
||
nil)
|
||
(list (vc-backend-for-registration (buffer-file-name))
|
||
(list buffer-file-name))))
|
||
(t (error "No fileset is available here")))))
|
||
|
||
(defun vc-dired-deduce-fileset ()
|
||
(let ((backend (vc-responsible-backend default-directory)))
|
||
(unless backend (error "Directory not under VC"))
|
||
(list backend
|
||
(dired-map-over-marks (dired-get-filename nil t) nil))))
|
||
|
||
(defun vc-ensure-vc-buffer ()
|
||
"Make sure that the current buffer visits a version-controlled file."
|
||
(cond
|
||
((derived-mode-p 'vc-dir-mode)
|
||
(set-buffer (find-file-noselect (vc-dir-current-file))))
|
||
(t
|
||
(while (and vc-parent-buffer
|
||
(buffer-live-p vc-parent-buffer)
|
||
;; Avoid infinite looping when vc-parent-buffer and
|
||
;; current buffer are the same buffer.
|
||
(not (eq vc-parent-buffer (current-buffer))))
|
||
(set-buffer vc-parent-buffer))
|
||
(if (not buffer-file-name)
|
||
(error "Buffer %s is not associated with a file" (buffer-name))
|
||
(unless (vc-backend buffer-file-name)
|
||
(error "File %s is not under version control" buffer-file-name))))))
|
||
|
||
;;; Support for the C-x v v command.
|
||
;; This is where all the single-file-oriented code from before the fileset
|
||
;; rewrite lives.
|
||
|
||
(defsubst vc-editable-p (file)
|
||
"Return non-nil if FILE can be edited."
|
||
(let ((backend (vc-backend file)))
|
||
(and backend
|
||
(or (eq (vc-checkout-model backend (list file)) 'implicit)
|
||
(memq (vc-state file) '(edited needs-merge conflict))))))
|
||
|
||
(defun vc-compatible-state (p q)
|
||
"Controls which states can be in the same commit."
|
||
(or
|
||
(eq p q)
|
||
(and (member p '(edited added removed)) (member q '(edited added removed)))))
|
||
|
||
;; Here's the major entry point.
|
||
|
||
;;;###autoload
|
||
(defun vc-next-action (verbose)
|
||
"Do the next logical version control operation on the current fileset.
|
||
This requires that all files in the fileset be in the same state.
|
||
|
||
For locking systems:
|
||
If every file is not already registered, this registers each for version
|
||
control.
|
||
If every file is registered and not locked by anyone, this checks out
|
||
a writable and locked file of each ready for editing.
|
||
If every file is checked out and locked by the calling user, this
|
||
first checks to see if each file has changed since checkout. If not,
|
||
it performs a revert on that file.
|
||
If every file has been changed, this pops up a buffer for entry
|
||
of a log message; when the message has been entered, it checks in the
|
||
resulting changes along with the log message as change commentary. If
|
||
the variable `vc-keep-workfiles' is non-nil (which is its default), a
|
||
read-only copy of each changed file is left in place afterwards.
|
||
If the affected file is registered and locked by someone else, you are
|
||
given the option to steal the lock(s).
|
||
|
||
For merging systems:
|
||
If every file is not already registered, this registers each one for version
|
||
control. This does an add, but not a commit.
|
||
If every file is added but not committed, each one is committed.
|
||
If every working file is changed, but the corresponding repository file is
|
||
unchanged, this pops up a buffer for entry of a log message; when the
|
||
message has been entered, it checks in the resulting changes along
|
||
with the logmessage as change commentary. A writable file is retained.
|
||
If the repository file is changed, you are asked if you want to
|
||
merge in the changes into your working copy."
|
||
(interactive "P")
|
||
(let* ((vc-fileset (vc-deduce-fileset nil t 'state-model-only-files))
|
||
(backend (car vc-fileset))
|
||
(files (nth 1 vc-fileset))
|
||
(fileset-only-files (nth 2 vc-fileset))
|
||
;; FIXME: We used to call `vc-recompute-state' here.
|
||
(state (nth 3 vc-fileset))
|
||
;; The backend should check that the checkout-model is consistent
|
||
;; among all the `files'.
|
||
(model (nth 4 vc-fileset))
|
||
revision)
|
||
|
||
;; Do the right thing
|
||
(cond
|
||
((eq state 'missing)
|
||
(error "Fileset files are missing, so cannot be operated on"))
|
||
((eq state 'ignored)
|
||
(error "Fileset files are ignored by the version-control system"))
|
||
((or (null state) (eq state 'unregistered))
|
||
(vc-register nil vc-fileset))
|
||
;; Files are up-to-date, or need a merge and user specified a revision
|
||
((or (eq state 'up-to-date) (and verbose (eq state 'needs-update)))
|
||
(cond
|
||
(verbose
|
||
;; go to a different revision
|
||
(setq revision (read-string "Branch, revision, or backend to move to: "))
|
||
(let ((revision-downcase (downcase revision)))
|
||
(if (member
|
||
revision-downcase
|
||
(mapcar (lambda (arg) (downcase (symbol-name arg))) vc-handled-backends))
|
||
(let ((vsym (intern-soft revision-downcase)))
|
||
(dolist (file files) (vc-transfer-file file vsym)))
|
||
(dolist (file files)
|
||
(vc-checkout file (eq model 'implicit) revision)))))
|
||
((not (eq model 'implicit))
|
||
;; check the files out
|
||
(dolist (file files) (vc-checkout file t)))
|
||
(t
|
||
;; do nothing
|
||
(message "Fileset is up-to-date"))))
|
||
;; Files have local changes
|
||
((vc-compatible-state state 'edited)
|
||
(let ((ready-for-commit files))
|
||
;; If files are edited but read-only, give user a chance to correct
|
||
(dolist (file files)
|
||
(unless (file-writable-p file)
|
||
;; Make the file+buffer read-write.
|
||
(unless (y-or-n-p (format "%s is edited but read-only; make it writable and continue?" file))
|
||
(error "Aborted"))
|
||
(set-file-modes file (logior (file-modes file) 128))
|
||
(let ((visited (get-file-buffer file)))
|
||
(when visited
|
||
(with-current-buffer visited
|
||
(toggle-read-only -1))))))
|
||
;; Allow user to revert files with no changes
|
||
(save-excursion
|
||
(dolist (file files)
|
||
(let ((visited (get-file-buffer file)))
|
||
;; For files with locking, if the file does not contain
|
||
;; any changes, just let go of the lock, i.e. revert.
|
||
(when (and (not (eq model 'implicit))
|
||
(vc-workfile-unchanged-p file)
|
||
;; If buffer is modified, that means the user just
|
||
;; said no to saving it; in that case, don't revert,
|
||
;; because the user might intend to save after
|
||
;; finishing the log entry and committing.
|
||
(not (and visited (buffer-modified-p))))
|
||
(vc-revert-file file)
|
||
(setq ready-for-commit (delete file ready-for-commit))))))
|
||
;; Remaining files need to be committed
|
||
(if (not ready-for-commit)
|
||
(message "No files remain to be committed")
|
||
(if (not verbose)
|
||
(vc-checkin ready-for-commit backend)
|
||
(setq revision (read-string "New revision or backend: "))
|
||
(let ((revision-downcase (downcase revision)))
|
||
(if (member
|
||
revision-downcase
|
||
(mapcar (lambda (arg) (downcase (symbol-name arg)))
|
||
vc-handled-backends))
|
||
(let ((vsym (intern revision-downcase)))
|
||
(dolist (file files) (vc-transfer-file file vsym)))
|
||
(vc-checkin ready-for-commit backend revision)))))))
|
||
;; locked by somebody else (locking VCSes only)
|
||
((stringp state)
|
||
;; In the old days, we computed the revision once and used it on
|
||
;; the single file. Then, for the 2007-2008 fileset rewrite, we
|
||
;; computed the revision once (incorrectly, using a free var) and
|
||
;; used it on all files. To fix the free var bug, we can either
|
||
;; use `(car files)' or do what we do here: distribute the
|
||
;; revision computation among `files'. Although this may be
|
||
;; tedious for those backends where a "revision" is a trans-file
|
||
;; concept, it is nonetheless correct for both those and (more
|
||
;; importantly) for those where "revision" is a per-file concept.
|
||
;; If the intersection of the former group and "locking VCSes" is
|
||
;; non-empty [I vaguely doubt it --ttn], we can reinstate the
|
||
;; pre-computation approach of yore.
|
||
(dolist (file files)
|
||
(vc-steal-lock
|
||
file (if verbose
|
||
(read-string (format "%s revision to steal: " file))
|
||
(vc-working-revision file))
|
||
state)))
|
||
;; conflict
|
||
((eq state 'conflict)
|
||
;; FIXME: Is it really the UI we want to provide?
|
||
;; In my experience, the conflicted files should be marked as resolved
|
||
;; one-by-one when saving the file after resolving the conflicts.
|
||
;; I.e. stating explicitly that the conflicts are resolved is done
|
||
;; very rarely.
|
||
(vc-mark-resolved backend files))
|
||
;; needs-update
|
||
((eq state 'needs-update)
|
||
(dolist (file files)
|
||
(if (yes-or-no-p (format
|
||
"%s is not up-to-date. Get latest revision? "
|
||
(file-name-nondirectory file)))
|
||
(vc-checkout file (eq model 'implicit) t)
|
||
(when (and (not (eq model 'implicit))
|
||
(yes-or-no-p "Lock this revision? "))
|
||
(vc-checkout file t)))))
|
||
;; needs-merge
|
||
((eq state 'needs-merge)
|
||
(dolist (file files)
|
||
(when (yes-or-no-p (format
|
||
"%s is not up-to-date. Merge in changes now? "
|
||
(file-name-nondirectory file)))
|
||
(vc-maybe-resolve-conflicts
|
||
file (vc-call-backend backend 'merge-news file)))))
|
||
|
||
;; unlocked-changes
|
||
((eq state 'unlocked-changes)
|
||
(dolist (file files)
|
||
(when (not (equal buffer-file-name file))
|
||
(find-file-other-window file))
|
||
(if (save-window-excursion
|
||
(vc-diff-internal nil
|
||
(cons (car vc-fileset) (cons (cadr vc-fileset) (list file)))
|
||
(vc-working-revision file) nil)
|
||
(goto-char (point-min))
|
||
(let ((inhibit-read-only t))
|
||
(insert
|
||
(format "Changes to %s since last lock:\n\n" file)))
|
||
(not (beep))
|
||
(yes-or-no-p (concat "File has unlocked changes. "
|
||
"Claim lock retaining changes? ")))
|
||
(progn (vc-call-backend backend 'steal-lock file)
|
||
(clear-visited-file-modtime)
|
||
;; Must clear any headers here because they wouldn't
|
||
;; show that the file is locked now.
|
||
(vc-clear-headers file)
|
||
(write-file buffer-file-name)
|
||
(vc-mode-line file backend))
|
||
(if (not (yes-or-no-p
|
||
"Revert to checked-in revision, instead? "))
|
||
(error "Checkout aborted")
|
||
(vc-revert-buffer-internal t t)
|
||
(vc-checkout file t)))))
|
||
;; Unknown fileset state
|
||
(t
|
||
(error "Fileset is in an unknown state %s" state)))))
|
||
|
||
(defun vc-create-repo (backend)
|
||
"Create an empty repository in the current directory."
|
||
(interactive
|
||
(list
|
||
(intern
|
||
(upcase
|
||
(completing-read
|
||
"Create repository for: "
|
||
(mapcar (lambda (b) (list (downcase (symbol-name b)))) vc-handled-backends)
|
||
nil t)))))
|
||
(vc-call-backend backend 'create-repo))
|
||
|
||
(declare-function vc-dir-move-to-goal-column "vc-dir" ())
|
||
|
||
;;;###autoload
|
||
(defun vc-register (&optional set-revision vc-fileset comment)
|
||
"Register into a version control system.
|
||
If VC-FILESET is given, register the files in that fileset.
|
||
Otherwise register the current file.
|
||
With prefix argument SET-REVISION, allow user to specify initial revision
|
||
level. If COMMENT is present, use that as an initial comment.
|
||
|
||
The version control system to use is found by cycling through the list
|
||
`vc-handled-backends'. The first backend in that list which declares
|
||
itself responsible for the file (usually because other files in that
|
||
directory are already registered under that backend) will be used to
|
||
register the file. If no backend declares itself responsible, the
|
||
first backend that could register the file is used."
|
||
(interactive "P")
|
||
(let* ((fileset-arg (or vc-fileset (vc-deduce-fileset nil t)))
|
||
(backend (car fileset-arg))
|
||
(files (nth 1 fileset-arg)))
|
||
;; We used to operate on `only-files', but VC wants to provide the
|
||
;; possibility to register directories rather than files only, since
|
||
;; many VCS allow that as well.
|
||
(dolist (fname files)
|
||
(let ((bname (get-file-buffer fname)))
|
||
(unless fname (setq fname buffer-file-name))
|
||
(when (vc-backend fname)
|
||
(if (vc-registered fname)
|
||
(error "This file is already registered")
|
||
(unless (y-or-n-p "Previous master file has vanished. Make a new one? ")
|
||
(error "Aborted"))))
|
||
;; Watch out for new buffers of size 0: the corresponding file
|
||
;; does not exist yet, even though buffer-modified-p is nil.
|
||
(when bname
|
||
(with-current-buffer bname
|
||
(when (and (not (buffer-modified-p))
|
||
(zerop (buffer-size))
|
||
(not (file-exists-p buffer-file-name)))
|
||
(set-buffer-modified-p t))
|
||
(vc-buffer-sync)))))
|
||
(message "Registering %s... " files)
|
||
(mapc 'vc-file-clearprops files)
|
||
(vc-call-backend backend 'register files
|
||
(if set-revision
|
||
(read-string (format "Initial revision level for %s: " files))
|
||
(vc-call-backend backend 'init-revision))
|
||
comment)
|
||
(mapc
|
||
(lambda (file)
|
||
(vc-file-setprop file 'vc-backend backend)
|
||
;; FIXME: This is wrong: it should set `backup-inhibited' in all
|
||
;; the buffers visiting files affected by this `vc-register', not
|
||
;; in the current-buffer.
|
||
;; (unless vc-make-backup-files
|
||
;; (make-local-variable 'backup-inhibited)
|
||
;; (setq backup-inhibited t))
|
||
|
||
(vc-resynch-buffer file vc-keep-workfiles t))
|
||
files)
|
||
(when (derived-mode-p 'vc-dir-mode)
|
||
(vc-dir-move-to-goal-column))
|
||
(message "Registering %s... done" files)))
|
||
|
||
(defun vc-register-with (backend)
|
||
"Register the current file with a specified back end."
|
||
(interactive "SBackend: ")
|
||
(when (not (member backend vc-handled-backends))
|
||
(error "Unknown back end"))
|
||
(let ((vc-handled-backends (list backend)))
|
||
(call-interactively 'vc-register)))
|
||
|
||
(defun vc-checkout (file &optional writable rev)
|
||
"Retrieve a copy of the revision REV of FILE.
|
||
If WRITABLE is non-nil, make sure the retrieved file is writable.
|
||
REV defaults to the latest revision.
|
||
|
||
After check-out, runs the normal hook `vc-checkout-hook'."
|
||
(and writable
|
||
(not rev)
|
||
(vc-call make-version-backups-p file)
|
||
(vc-up-to-date-p file)
|
||
(vc-make-version-backup file))
|
||
(let ((backend (vc-backend file)))
|
||
(with-vc-properties (list file)
|
||
(condition-case err
|
||
(vc-call-backend backend 'checkout file writable rev)
|
||
(file-error
|
||
;; Maybe the backend is not installed ;-(
|
||
(when writable
|
||
(let ((buf (get-file-buffer file)))
|
||
(when buf (with-current-buffer buf (toggle-read-only -1)))))
|
||
(signal (car err) (cdr err))))
|
||
`((vc-state . ,(if (or (eq (vc-checkout-model backend (list file)) 'implicit)
|
||
(not writable))
|
||
(if (vc-call-backend backend 'latest-on-branch-p file)
|
||
'up-to-date
|
||
'needs-update)
|
||
'edited))
|
||
(vc-checkout-time . ,(nth 5 (file-attributes file))))))
|
||
(vc-resynch-buffer file t t)
|
||
(run-hooks 'vc-checkout-hook))
|
||
|
||
(defun vc-mark-resolved (backend files)
|
||
(prog1 (with-vc-properties
|
||
files
|
||
(vc-call-backend backend 'mark-resolved files)
|
||
;; FIXME: Is this TRTD? Might not be.
|
||
`((vc-state . edited)))
|
||
(message
|
||
(substitute-command-keys
|
||
"Conflicts have been resolved in %s. \
|
||
Type \\[vc-next-action] to check in changes.")
|
||
(if (> (length files) 1)
|
||
(format "%d files" (length files))
|
||
"this file"))))
|
||
|
||
(defun vc-steal-lock (file rev owner)
|
||
"Steal the lock on FILE."
|
||
(let (file-description)
|
||
(if rev
|
||
(setq file-description (format "%s:%s" file rev))
|
||
(setq file-description file))
|
||
(when (not (yes-or-no-p (format "Steal the lock on %s from %s? "
|
||
file-description owner)))
|
||
(error "Steal canceled"))
|
||
(message "Stealing lock on %s..." file)
|
||
(with-vc-properties
|
||
(list file)
|
||
(vc-call steal-lock file rev)
|
||
`((vc-state . edited)))
|
||
(vc-resynch-buffer file t t)
|
||
(message "Stealing lock on %s...done" file)
|
||
;; Write mail after actually stealing, because if the stealing
|
||
;; goes wrong, we don't want to send any mail.
|
||
(compose-mail owner (format "Stolen lock on %s" file-description))
|
||
(setq default-directory (expand-file-name "~/"))
|
||
(goto-char (point-max))
|
||
(insert
|
||
(format "I stole the lock on %s, " file-description)
|
||
(current-time-string)
|
||
".\n")
|
||
(message "Please explain why you stole the lock. Type C-c C-c when done.")))
|
||
|
||
(defun vc-checkin (files backend &optional rev comment initial-contents)
|
||
"Check in FILES.
|
||
The optional argument REV may be a string specifying the new revision
|
||
level (if nil increment the current level). COMMENT is a comment
|
||
string; if omitted, a buffer is popped up to accept a comment. If
|
||
INITIAL-CONTENTS is non-nil, then COMMENT is used as the initial contents
|
||
of the log entry buffer.
|
||
|
||
If `vc-keep-workfiles' is nil, FILE is deleted afterwards, provided
|
||
that the version control system supports this mode of operation.
|
||
|
||
Runs the normal hooks `vc-before-checkin-hook' and `vc-checkin-hook'."
|
||
(when vc-before-checkin-hook
|
||
(run-hooks 'vc-before-checkin-hook))
|
||
(lexical-let
|
||
((backend backend))
|
||
(vc-start-logentry
|
||
files rev comment initial-contents
|
||
"Enter a change comment."
|
||
"*VC-log*"
|
||
(lambda (files rev comment)
|
||
(message "Checking in %s..." (vc-delistify files))
|
||
;; "This log message intentionally left almost blank".
|
||
;; RCS 5.7 gripes about white-space-only comments too.
|
||
(or (and comment (string-match "[^\t\n ]" comment))
|
||
(setq comment "*** empty log message ***"))
|
||
(with-vc-properties
|
||
files
|
||
;; We used to change buffers to get local value of vc-checkin-switches,
|
||
;; but 'the' local buffer is not a well-defined concept for filesets.
|
||
(progn
|
||
(vc-call-backend backend 'checkin files rev comment)
|
||
(mapc 'vc-delete-automatic-version-backups files))
|
||
`((vc-state . up-to-date)
|
||
(vc-checkout-time . ,(nth 5 (file-attributes file)))
|
||
(vc-working-revision . nil)))
|
||
(message "Checking in %s...done" (vc-delistify files)))
|
||
'vc-checkin-hook)))
|
||
|
||
;;; Additional entry points for examining version histories
|
||
|
||
;; (defun vc-default-diff-tree (backend dir rev1 rev2)
|
||
;; "List differences for all registered files at and below DIR.
|
||
;; The meaning of REV1 and REV2 is the same as for `vc-revision-diff'."
|
||
;; ;; This implementation does an explicit tree walk, and calls
|
||
;; ;; vc-BACKEND-diff directly for each file. An optimization
|
||
;; ;; would be to use `vc-diff-internal', so that diffs can be local,
|
||
;; ;; and to call it only for files that are actually changed.
|
||
;; ;; However, this is expensive for some backends, and so it is left
|
||
;; ;; to backend-specific implementations.
|
||
;; (setq default-directory dir)
|
||
;; (vc-file-tree-walk
|
||
;; default-directory
|
||
;; (lambda (f)
|
||
;; (vc-exec-after
|
||
;; `(let ((coding-system-for-read (vc-coding-system-for-diff ',f)))
|
||
;; (message "Looking at %s" ',f)
|
||
;; (vc-call-backend ',(vc-backend f)
|
||
;; 'diff (list ',f) ',rev1 ',rev2))))))
|
||
|
||
(defun vc-coding-system-for-diff (file)
|
||
"Return the coding system for reading diff output for FILE."
|
||
(or coding-system-for-read
|
||
;; if we already have this file open,
|
||
;; use the buffer's coding system
|
||
(let ((buf (find-buffer-visiting file)))
|
||
(when buf (with-current-buffer buf
|
||
buffer-file-coding-system)))
|
||
;; otherwise, try to find one based on the file name
|
||
(car (find-operation-coding-system 'insert-file-contents file))
|
||
;; and a final fallback
|
||
'undecided))
|
||
|
||
(defun vc-switches (backend op)
|
||
"Return a list of vc-BACKEND switches for operation OP.
|
||
BACKEND is a symbol such as `CVS', which will be downcased.
|
||
OP is a symbol such as `diff'.
|
||
|
||
In decreasing order of preference, return the value of:
|
||
vc-BACKEND-OP-switches (e.g. `vc-cvs-diff-switches');
|
||
vc-OP-switches (e.g. `vc-diff-switches'); or, in the case of
|
||
diff only, `diff-switches'.
|
||
|
||
If the chosen value is not a string or a list, return nil.
|
||
This is so that you may set, e.g. `vc-svn-diff-switches' to t in order
|
||
to override the value of `vc-diff-switches' and `diff-switches'."
|
||
(let ((switches
|
||
(or (when backend
|
||
(let ((sym (vc-make-backend-sym
|
||
backend (intern (concat (symbol-name op)
|
||
"-switches")))))
|
||
(when (boundp sym) (symbol-value sym))))
|
||
(let ((sym (intern (format "vc-%s-switches" (symbol-name op)))))
|
||
(when (boundp sym) (symbol-value sym)))
|
||
(cond
|
||
((eq op 'diff) diff-switches)))))
|
||
(if (stringp switches) (list switches)
|
||
;; If not a list, return nil.
|
||
;; This is so we can set vc-diff-switches to t to override
|
||
;; any switches in diff-switches.
|
||
(when (listp switches) switches))))
|
||
|
||
;; Old def for compatibility with Emacs-21.[123].
|
||
(defmacro vc-diff-switches-list (backend) `(vc-switches ',backend 'diff))
|
||
(make-obsolete 'vc-diff-switches-list 'vc-switches "22.1")
|
||
|
||
(defun vc-diff-finish (buffer messages)
|
||
;; The empty sync output case has already been handled, so the only
|
||
;; possibility of an empty output is for an async process.
|
||
(when (buffer-live-p buffer)
|
||
(let ((window (get-buffer-window buffer t))
|
||
(emptyp (zerop (buffer-size buffer))))
|
||
(with-current-buffer buffer
|
||
(and messages emptyp
|
||
(let ((inhibit-read-only t))
|
||
(insert (cdr messages) ".\n")
|
||
(message "%s" (cdr messages))))
|
||
(goto-char (point-min))
|
||
(when window
|
||
(shrink-window-if-larger-than-buffer window)))
|
||
(when (and messages (not emptyp))
|
||
(message "%sdone" (car messages))))))
|
||
|
||
(defvar vc-diff-added-files nil
|
||
"If non-nil, diff added files by comparing them to /dev/null.")
|
||
|
||
(defun vc-diff-internal (async vc-fileset rev1 rev2 &optional verbose)
|
||
"Report diffs between two revisions of a fileset.
|
||
Diff output goes to the *vc-diff* buffer. The function
|
||
returns t if the buffer had changes, nil otherwise."
|
||
(let* ((files (cadr vc-fileset))
|
||
(messages (cons (format "Finding changes in %s..."
|
||
(vc-delistify files))
|
||
(format "No changes between %s and %s"
|
||
(or rev1 "working revision")
|
||
(or rev2 "workfile"))))
|
||
;; Set coding system based on the first file. It's a kluge,
|
||
;; but the only way to set it for each file included would
|
||
;; be to call the back end separately for each file.
|
||
(coding-system-for-read
|
||
(if files (vc-coding-system-for-diff (car files)) 'undecided)))
|
||
(vc-setup-buffer "*vc-diff*")
|
||
(message "%s" (car messages))
|
||
;; Many backends don't handle well the case of a file that has been
|
||
;; added but not yet committed to the repo (notably CVS and Subversion).
|
||
;; Do that work here so the backends don't have to futz with it. --ESR
|
||
;;
|
||
;; Actually most backends (including CVS) have options to control the
|
||
;; behavior since which one is better depends on the user and on the
|
||
;; situation). Worse yet: this code does not handle the case where
|
||
;; `file' is a directory which contains added files.
|
||
;; I made it conditional on vc-diff-added-files but it should probably
|
||
;; just be removed (or copied/moved to specific backends). --Stef.
|
||
(when vc-diff-added-files
|
||
(let ((filtered '())
|
||
process-file-side-effects)
|
||
(dolist (file files)
|
||
(if (or (file-directory-p file)
|
||
(not (string= (vc-working-revision file) "0")))
|
||
(push file filtered)
|
||
;; This file is added but not yet committed;
|
||
;; there is no master file to diff against.
|
||
(if (or rev1 rev2)
|
||
(error "No revisions of %s exist" file)
|
||
;; We regard this as "changed".
|
||
;; Diff it against /dev/null.
|
||
(apply 'vc-do-command "*vc-diff*"
|
||
1 "diff" file
|
||
(append (vc-switches nil 'diff) '("/dev/null"))))))
|
||
(setq files (nreverse filtered))))
|
||
(let ((vc-disable-async-diff (not async)))
|
||
(vc-call-backend (car vc-fileset) 'diff files rev1 rev2 "*vc-diff*"))
|
||
(set-buffer "*vc-diff*")
|
||
(if (and (zerop (buffer-size))
|
||
(not (get-buffer-process (current-buffer))))
|
||
;; Treat this case specially so as not to pop the buffer.
|
||
(progn
|
||
(message "%s" (cdr messages))
|
||
nil)
|
||
(diff-mode)
|
||
;; Make the *vc-diff* buffer read only, the diff-mode key
|
||
;; bindings are nicer for read only buffers. pcl-cvs does the
|
||
;; same thing.
|
||
(setq buffer-read-only t)
|
||
(vc-exec-after `(vc-diff-finish ,(current-buffer) ',(when verbose
|
||
messages)))
|
||
;; Display the buffer, but at the end because it can change point.
|
||
(pop-to-buffer (current-buffer))
|
||
;; In the async case, we return t even if there are no differences
|
||
;; because we don't know that yet.
|
||
t)))
|
||
|
||
(defun vc-read-revision (prompt &optional files backend default initial-input)
|
||
(cond
|
||
((null files)
|
||
(let ((vc-fileset (vc-deduce-fileset t))) ;FIXME: why t? --Stef
|
||
(setq files (cadr vc-fileset))
|
||
(setq backend (car vc-fileset))))
|
||
((null backend) (setq backend (vc-backend (car files)))))
|
||
(let ((completion-table
|
||
(vc-call-backend backend 'revision-completion-table files)))
|
||
(if completion-table
|
||
(completing-read prompt completion-table
|
||
nil nil initial-input nil default)
|
||
(read-string prompt initial-input nil default))))
|
||
|
||
;;;###autoload
|
||
(defun vc-version-diff (files rev1 rev2)
|
||
"Report diffs between revisions of the fileset in the repository history."
|
||
(interactive
|
||
(let* ((vc-fileset (vc-deduce-fileset t)) ;FIXME: why t? --Stef
|
||
(files (cadr vc-fileset))
|
||
(backend (car vc-fileset))
|
||
(first (car files))
|
||
(rev1-default nil)
|
||
(rev2-default nil))
|
||
(cond
|
||
;; someday we may be able to do revision completion on non-singleton
|
||
;; filesets, but not yet.
|
||
((/= (length files) 1)
|
||
nil)
|
||
;; if it's a directory, don't supply any revision default
|
||
((file-directory-p first)
|
||
nil)
|
||
;; if the file is not up-to-date, use working revision as older revision
|
||
((not (vc-up-to-date-p first))
|
||
(setq rev1-default (vc-working-revision first)))
|
||
;; if the file is not locked, use last and previous revisions as defaults
|
||
(t
|
||
(setq rev1-default (vc-call-backend backend 'previous-revision first
|
||
(vc-working-revision first)))
|
||
(when (string= rev1-default "") (setq rev1-default nil))
|
||
(setq rev2-default (vc-working-revision first))))
|
||
;; construct argument list
|
||
(let* ((rev1-prompt (if rev1-default
|
||
(concat "Older revision (default "
|
||
rev1-default "): ")
|
||
"Older revision: "))
|
||
(rev2-prompt (concat "Newer revision (default "
|
||
(or rev2-default "current source") "): "))
|
||
(rev1 (vc-read-revision rev1-prompt files backend rev1-default))
|
||
(rev2 (vc-read-revision rev2-prompt files backend rev2-default)))
|
||
(when (string= rev1 "") (setq rev1 nil))
|
||
(when (string= rev2 "") (setq rev2 nil))
|
||
(list files rev1 rev2))))
|
||
;; All that was just so we could do argument completion!
|
||
(when (and (not rev1) rev2)
|
||
(error "Not a valid revision range"))
|
||
;; Yes, it's painful to call (vc-deduce-fileset) again. Alas, the
|
||
;; placement rules for (interactive) don't actually leave us a choice.
|
||
(vc-diff-internal t (vc-deduce-fileset t) rev1 rev2
|
||
(called-interactively-p 'interactive)))
|
||
|
||
;;;###autoload
|
||
(defun vc-diff (historic &optional not-urgent)
|
||
"Display diffs between file revisions.
|
||
Normally this compares the currently selected fileset with their
|
||
working revisions. With a prefix argument HISTORIC, it reads two revision
|
||
designators specifying which revisions to compare.
|
||
|
||
The optional argument NOT-URGENT non-nil means it is ok to say no to
|
||
saving the buffer."
|
||
(interactive (list current-prefix-arg t))
|
||
(if historic
|
||
(call-interactively 'vc-version-diff)
|
||
(when buffer-file-name (vc-buffer-sync not-urgent))
|
||
(vc-diff-internal t (vc-deduce-fileset t) nil nil
|
||
(called-interactively-p 'interactive))))
|
||
|
||
;;;###autoload
|
||
(defun vc-root-diff (historic &optional not-urgent)
|
||
"Display diffs between file revisions.
|
||
Normally this compares the currently selected fileset with their
|
||
working revisions. With a prefix argument HISTORIC, it reads two revision
|
||
designators specifying which revisions to compare.
|
||
|
||
The optional argument NOT-URGENT non-nil means it is ok to say no to
|
||
saving the buffer."
|
||
(interactive (list current-prefix-arg t))
|
||
(if historic
|
||
;; FIXME: this does not work right, `vc-version-diff' ends up
|
||
;; calling `vc-deduce-fileset' to find the files to diff, and
|
||
;; that's not what we want here, we want the diff for the VC root dir.
|
||
(call-interactively 'vc-version-diff)
|
||
(when buffer-file-name (vc-buffer-sync not-urgent))
|
||
(let ((backend
|
||
(cond ((derived-mode-p 'vc-dir-mode) vc-dir-backend)
|
||
((derived-mode-p 'dired-mode) (vc-responsible-backend default-directory))
|
||
(vc-mode (vc-backend buffer-file-name))))
|
||
rootdir working-revision)
|
||
(unless backend
|
||
(error "Buffer is not version controlled"))
|
||
(setq rootdir (vc-call-backend backend 'root default-directory))
|
||
(setq working-revision (vc-working-revision rootdir))
|
||
(vc-diff-internal
|
||
t (list backend (list rootdir) working-revision) nil nil
|
||
(called-interactively-p 'interactive)))))
|
||
|
||
;;;###autoload
|
||
(defun vc-revision-other-window (rev)
|
||
"Visit revision REV of the current file in another window.
|
||
If the current file is named `F', the revision is named `F.~REV~'.
|
||
If `F.~REV~' already exists, use it instead of checking it out again."
|
||
(interactive
|
||
(save-current-buffer
|
||
(vc-ensure-vc-buffer)
|
||
(list
|
||
(vc-read-revision "Revision to visit (default is working revision): "
|
||
(list buffer-file-name)))))
|
||
(vc-ensure-vc-buffer)
|
||
(let* ((file buffer-file-name)
|
||
(revision (if (string-equal rev "")
|
||
(vc-working-revision file)
|
||
rev)))
|
||
(switch-to-buffer-other-window (vc-find-revision file revision))))
|
||
|
||
(defun vc-find-revision (file revision)
|
||
"Read REVISION of FILE into a buffer and return the buffer."
|
||
(let ((automatic-backup (vc-version-backup-file-name file revision))
|
||
(filebuf (or (get-file-buffer file) (current-buffer)))
|
||
(filename (vc-version-backup-file-name file revision 'manual)))
|
||
(unless (file-exists-p filename)
|
||
(if (file-exists-p automatic-backup)
|
||
(rename-file automatic-backup filename nil)
|
||
(message "Checking out %s..." filename)
|
||
(with-current-buffer filebuf
|
||
(let ((failed t))
|
||
(unwind-protect
|
||
(let ((coding-system-for-read 'no-conversion)
|
||
(coding-system-for-write 'no-conversion))
|
||
(with-temp-file filename
|
||
(let ((outbuf (current-buffer)))
|
||
;; Change buffer to get local value of
|
||
;; vc-checkout-switches.
|
||
(with-current-buffer filebuf
|
||
(vc-call find-revision file revision outbuf))))
|
||
(setq failed nil))
|
||
(when (and failed (file-exists-p filename))
|
||
(delete-file filename))))
|
||
(vc-mode-line file))
|
||
(message "Checking out %s...done" filename)))
|
||
(let ((result-buf (find-file-noselect filename)))
|
||
(with-current-buffer result-buf
|
||
;; Set the parent buffer so that things like
|
||
;; C-x v g, C-x v l, ... etc work.
|
||
(set (make-local-variable 'vc-parent-buffer) filebuf))
|
||
result-buf)))
|
||
|
||
;; Header-insertion code
|
||
|
||
;;;###autoload
|
||
(defun vc-insert-headers ()
|
||
"Insert headers into a file for use with a version control system.
|
||
Headers desired are inserted at point, and are pulled from
|
||
the variable `vc-BACKEND-header'."
|
||
(interactive)
|
||
(vc-ensure-vc-buffer)
|
||
(save-excursion
|
||
(save-restriction
|
||
(widen)
|
||
(when (or (not (vc-check-headers))
|
||
(y-or-n-p "Version headers already exist. Insert another set? "))
|
||
(let* ((delims (cdr (assq major-mode vc-comment-alist)))
|
||
(comment-start-vc (or (car delims) comment-start "#"))
|
||
(comment-end-vc (or (car (cdr delims)) comment-end ""))
|
||
(hdsym (vc-make-backend-sym (vc-backend buffer-file-name)
|
||
'header))
|
||
(hdstrings (and (boundp hdsym) (symbol-value hdsym))))
|
||
(dolist (s hdstrings)
|
||
(insert comment-start-vc "\t" s "\t"
|
||
comment-end-vc "\n"))
|
||
(when vc-static-header-alist
|
||
(dolist (f vc-static-header-alist)
|
||
(when (string-match (car f) buffer-file-name)
|
||
(insert (format (cdr f) (car hdstrings)))))))))))
|
||
|
||
(defun vc-clear-headers (&optional file)
|
||
"Clear all version headers in the current buffer (or FILE).
|
||
The headers are reset to their non-expanded form."
|
||
(let* ((filename (or file buffer-file-name))
|
||
(visited (find-buffer-visiting filename))
|
||
(backend (vc-backend filename)))
|
||
(when (vc-find-backend-function backend 'clear-headers)
|
||
(if visited
|
||
(let ((context (vc-buffer-context)))
|
||
;; save-excursion may be able to relocate point and mark
|
||
;; properly. If it fails, vc-restore-buffer-context
|
||
;; will give it a second try.
|
||
(save-excursion
|
||
(vc-call-backend backend 'clear-headers))
|
||
(vc-restore-buffer-context context))
|
||
(set-buffer (find-file-noselect filename))
|
||
(vc-call-backend backend 'clear-headers)
|
||
(kill-buffer filename)))))
|
||
|
||
(defun vc-modify-change-comment (files rev oldcomment)
|
||
"Edit the comment associated with the given files and revision."
|
||
(vc-start-logentry
|
||
files rev oldcomment t
|
||
"Enter a replacement change comment."
|
||
"*VC-log*"
|
||
(lambda (files rev comment)
|
||
(vc-call-backend
|
||
;; Less of a kluge than it looks like; log-view mode only passes
|
||
;; this function a singleton list. Arguments left in this form in
|
||
;; case the more general operation ever becomes meaningful.
|
||
(vc-responsible-backend (car files))
|
||
'modify-change-comment files rev comment))))
|
||
|
||
;;;###autoload
|
||
(defun vc-merge ()
|
||
"Merge changes between two revisions into the current buffer's file.
|
||
This asks for two revisions to merge from in the minibuffer. If the
|
||
first revision is a branch number, then merge all changes from that
|
||
branch. If the first revision is empty, merge news, i.e. recent changes
|
||
from the current branch.
|
||
|
||
See Info node `Merging'."
|
||
(interactive)
|
||
(vc-ensure-vc-buffer)
|
||
(vc-buffer-sync)
|
||
(let* ((file buffer-file-name)
|
||
(backend (vc-backend file))
|
||
(state (vc-state file))
|
||
first-revision second-revision status)
|
||
(cond
|
||
((stringp state) ;; Locking VCses only
|
||
(error "File is locked by %s" state))
|
||
((not (vc-editable-p file))
|
||
(if (y-or-n-p
|
||
"File must be checked out for merging. Check out now? ")
|
||
(vc-checkout file t)
|
||
(error "Merge aborted"))))
|
||
(setq first-revision
|
||
(vc-read-revision
|
||
(concat "Branch or revision to merge from "
|
||
"(default news on current branch): ")
|
||
(list file)
|
||
backend))
|
||
(if (string= first-revision "")
|
||
(setq status (vc-call-backend backend 'merge-news file))
|
||
(if (not (vc-find-backend-function backend 'merge))
|
||
(error "Sorry, merging is not implemented for %s" backend)
|
||
(if (not (vc-branch-p first-revision))
|
||
(setq second-revision
|
||
(vc-read-revision
|
||
"Second revision: "
|
||
(list file) backend nil
|
||
;; FIXME: This is CVS/RCS/SCCS specific.
|
||
(concat (vc-branch-part first-revision) ".")))
|
||
;; We want to merge an entire branch. Set revisions
|
||
;; accordingly, so that vc-BACKEND-merge understands us.
|
||
(setq second-revision first-revision)
|
||
;; first-revision must be the starting point of the branch
|
||
(setq first-revision (vc-branch-part first-revision)))
|
||
(setq status (vc-call-backend backend 'merge file
|
||
first-revision second-revision))))
|
||
(vc-maybe-resolve-conflicts file status "WORKFILE" "MERGE SOURCE")))
|
||
|
||
(defun vc-maybe-resolve-conflicts (file status &optional name-A name-B)
|
||
(vc-resynch-buffer file t (not (buffer-modified-p)))
|
||
(if (zerop status) (message "Merge successful")
|
||
(smerge-mode 1)
|
||
(message "File contains conflicts.")))
|
||
|
||
;;;###autoload
|
||
(defalias 'vc-resolve-conflicts 'smerge-ediff)
|
||
|
||
;; Named-configuration entry points
|
||
|
||
(defun vc-tag-precondition (dir)
|
||
"Scan the tree below DIR, looking for files not up-to-date.
|
||
If any file is not up-to-date, return the name of the first such file.
|
||
\(This means, neither tag creation nor retrieval is allowed.\)
|
||
If one or more of the files are currently visited, return `visited'.
|
||
Otherwise, return nil."
|
||
(let ((status nil))
|
||
(catch 'vc-locked-example
|
||
(vc-file-tree-walk
|
||
dir
|
||
(lambda (f)
|
||
(if (not (vc-up-to-date-p f)) (throw 'vc-locked-example f)
|
||
(when (get-file-buffer f) (setq status 'visited)))))
|
||
status)))
|
||
|
||
;;;###autoload
|
||
(defun vc-create-tag (dir name branchp)
|
||
"Descending recursively from DIR, make a tag called NAME.
|
||
For each registered file, the working revision becomes part of
|
||
the named configuration. If the prefix argument BRANCHP is
|
||
given, the tag is made as a new branch and the files are
|
||
checked out in that new branch."
|
||
(interactive
|
||
(list (read-file-name "Directory: " default-directory default-directory t)
|
||
(read-string "New tag name: ")
|
||
current-prefix-arg))
|
||
(message "Making %s... " (if branchp "branch" "tag"))
|
||
(when (file-directory-p dir) (setq dir (file-name-as-directory dir)))
|
||
(vc-call-backend (vc-responsible-backend dir)
|
||
'create-tag dir name branchp)
|
||
(message "Making %s... done" (if branchp "branch" "tag")))
|
||
|
||
;;;###autoload
|
||
(defun vc-retrieve-tag (dir name)
|
||
"Descending recursively from DIR, retrieve the tag called NAME.
|
||
If NAME is empty, it refers to the latest revisions.
|
||
If locking is used for the files in DIR, then there must not be any
|
||
locked files at or below DIR (but if NAME is empty, locked files are
|
||
allowed and simply skipped)."
|
||
(interactive
|
||
(list (read-file-name "Directory: " default-directory default-directory t)
|
||
(read-string "Tag name to retrieve (default latest revisions): ")))
|
||
(let ((update (yes-or-no-p "Update any affected buffers? "))
|
||
(msg (if (or (not name) (string= name ""))
|
||
(format "Updating %s... " (abbreviate-file-name dir))
|
||
(format "Retrieving tag into %s... "
|
||
(abbreviate-file-name dir)))))
|
||
(message "%s" msg)
|
||
(vc-call-backend (vc-responsible-backend dir)
|
||
'retrieve-tag dir name update)
|
||
(message "%s" (concat msg "done"))))
|
||
|
||
;; Miscellaneous other entry points
|
||
|
||
;; FIXME: this should be a defcustom
|
||
;; FIXME: maybe add another choice:
|
||
;; `root-directory' (or somesuch), which would mean show a short log
|
||
;; for the root directory.
|
||
(defvar vc-log-short-style '(directory)
|
||
"Whether or not to show a short log.
|
||
If it contains `directory' then if the fileset contains a directory show a short log.
|
||
If it contains `file' then show short logs for files.
|
||
Not all VC backends support short logs!")
|
||
|
||
(defun vc-print-log-internal (backend files working-revision
|
||
&optional limit)
|
||
;; Don't switch to the output buffer before running the command,
|
||
;; so that any buffer-local settings in the vc-controlled
|
||
;; buffer can be accessed by the command.
|
||
(let ((dir-present nil)
|
||
(vc-short-log nil)
|
||
pl-return)
|
||
(dolist (file files)
|
||
(when (file-directory-p file)
|
||
(setq dir-present t)))
|
||
(setq vc-short-log
|
||
(not (null (if dir-present
|
||
(memq 'directory vc-log-short-style)
|
||
(memq 'file vc-log-short-style)))))
|
||
|
||
(setq pl-return (vc-call-backend backend 'print-log files "*vc-change-log*"
|
||
vc-short-log limit))
|
||
(pop-to-buffer "*vc-change-log*")
|
||
(vc-exec-after
|
||
`(let ((inhibit-read-only t)
|
||
(vc-short-log ,vc-short-log))
|
||
(vc-call-backend ',backend 'log-view-mode)
|
||
(set (make-local-variable 'log-view-vc-backend) ',backend)
|
||
(set (make-local-variable 'log-view-vc-fileset) ',files)
|
||
|
||
(when (and ,limit (not (eq 'limit-unsupported pl-return)))
|
||
(goto-char (point-max))
|
||
(widget-create 'push-button
|
||
:notify (lambda (&rest ignore)
|
||
(vc-print-log-internal
|
||
',backend ',files ',working-revision (* 2 ,limit)))
|
||
:help-echo "Show the log again, and double the number of log entries shown"
|
||
"Show 2X entries")
|
||
(widget-insert " ")
|
||
(widget-create 'push-button
|
||
:notify (lambda (&rest ignore)
|
||
(vc-print-log-internal
|
||
',backend ',files ',working-revision nil))
|
||
:help-echo "Show the log again, showing all entries"
|
||
"Show unlimited entries")
|
||
(widget-setup))
|
||
|
||
(shrink-window-if-larger-than-buffer)
|
||
;; move point to the log entry for the working revision
|
||
(vc-call-backend ',backend 'show-log-entry ',working-revision)
|
||
(setq vc-sentinel-movepoint (point))
|
||
(set-buffer-modified-p nil)))))
|
||
|
||
;;;###autoload
|
||
(defun vc-print-log (&optional working-revision limit)
|
||
"List the change log of the current fileset in a window.
|
||
If WORKING-REVISION is non-nil, leave the point at that revision."
|
||
(interactive
|
||
(cond
|
||
(current-prefix-arg
|
||
(let ((rev (read-from-minibuffer "Log from revision (default: last revision): " nil
|
||
nil nil nil))
|
||
(lim (string-to-number
|
||
(read-from-minibuffer
|
||
"Limit display (unlimited: 0): "
|
||
(format "%s" vc-log-show-limit)
|
||
nil nil nil))))
|
||
(when (string= rev "") (setq rev nil))
|
||
(when (<= lim 0) (setq lim nil))
|
||
(list rev lim)))
|
||
(t
|
||
(list nil nil))))
|
||
(let* ((vc-fileset (vc-deduce-fileset t)) ;FIXME: Why t? --Stef
|
||
(backend (car vc-fileset))
|
||
(files (cadr vc-fileset))
|
||
(working-revision (or working-revision (vc-working-revision (car files)))))
|
||
(vc-print-log-internal backend files working-revision limit)))
|
||
|
||
;;;###autoload
|
||
(defun vc-print-root-log (&optional limit)
|
||
"List the change log of for the current VC controlled tree in a window."
|
||
(interactive
|
||
(cond
|
||
(current-prefix-arg
|
||
(let ((lim (string-to-number
|
||
(read-from-minibuffer
|
||
"Limit display (unlimited: 0): "
|
||
(format "%s" vc-log-show-limit)
|
||
nil nil nil))))
|
||
(when (<= lim 0) (setq lim nil))
|
||
(list lim)))
|
||
(t
|
||
(list nil))))
|
||
(let ((backend
|
||
(cond ((derived-mode-p 'vc-dir-mode) vc-dir-backend)
|
||
((derived-mode-p 'dired-mode) (vc-responsible-backend default-directory))
|
||
(vc-mode (vc-backend buffer-file-name))))
|
||
rootdir working-revision)
|
||
(unless backend
|
||
(error "Buffer is not version controlled"))
|
||
(setq rootdir (vc-call-backend backend 'root default-directory))
|
||
(setq working-revision (vc-working-revision rootdir))
|
||
(vc-print-log-internal backend (list rootdir) working-revision limit)))
|
||
|
||
;;;###autoload
|
||
(defun vc-revert ()
|
||
"Revert working copies of the selected fileset to their repository contents.
|
||
This asks for confirmation if the buffer contents are not identical
|
||
to the working revision (except for keyword expansion)."
|
||
(interactive)
|
||
(let* ((vc-fileset (vc-deduce-fileset))
|
||
(files (cadr vc-fileset)))
|
||
;; If any of the files is visited by the current buffer, make
|
||
;; sure buffer is saved. If the user says `no', abort since
|
||
;; we cannot show the changes and ask for confirmation to
|
||
;; discard them.
|
||
(when (or (not files) (memq (buffer-file-name) files))
|
||
(vc-buffer-sync nil))
|
||
(dolist (file files)
|
||
(let ((buf (get-file-buffer file)))
|
||
(when (and buf (buffer-modified-p buf))
|
||
(error "Please kill or save all modified buffers before reverting")))
|
||
(when (vc-up-to-date-p file)
|
||
(unless (yes-or-no-p (format "%s seems up-to-date. Revert anyway? " file))
|
||
(error "Revert canceled"))))
|
||
(when (vc-diff-internal vc-allow-async-revert vc-fileset nil nil)
|
||
(unless (yes-or-no-p
|
||
(format "Discard changes in %s? "
|
||
(let ((str (vc-delistify files)))
|
||
(if (< (length str) 50)
|
||
str
|
||
(format "%d files" (length files))))))
|
||
(error "Revert canceled"))
|
||
(delete-windows-on "*vc-diff*")
|
||
(kill-buffer "*vc-diff*"))
|
||
(dolist (file files)
|
||
(message "Reverting %s..." (vc-delistify files))
|
||
(vc-revert-file file)
|
||
(message "Reverting %s...done" (vc-delistify files)))))
|
||
|
||
;;;###autoload
|
||
(defun vc-rollback ()
|
||
"Roll back (remove) the most recent changeset committed to the repository.
|
||
This may be either a file-level or a repository-level operation,
|
||
depending on the underlying version-control system."
|
||
(interactive)
|
||
(let* ((vc-fileset (vc-deduce-fileset))
|
||
(backend (car vc-fileset))
|
||
(files (cadr vc-fileset))
|
||
(granularity (vc-call-backend backend 'revision-granularity)))
|
||
(unless (vc-find-backend-function backend 'rollback)
|
||
(error "Rollback is not supported in %s" backend))
|
||
(when (and (not (eq granularity 'repository)) (/= (length files) 1))
|
||
(error "Rollback requires a singleton fileset or repository versioning"))
|
||
;; FIXME: latest-on-branch-p should take the fileset.
|
||
(when (not (vc-call-backend backend 'latest-on-branch-p (car files)))
|
||
(error "Rollback is only possible at the tip revision"))
|
||
;; If any of the files is visited by the current buffer, make
|
||
;; sure buffer is saved. If the user says `no', abort since
|
||
;; we cannot show the changes and ask for confirmation to
|
||
;; discard them.
|
||
(when (or (not files) (memq (buffer-file-name) files))
|
||
(vc-buffer-sync nil))
|
||
(dolist (file files)
|
||
(when (buffer-modified-p (get-file-buffer file))
|
||
(error "Please kill or save all modified buffers before rollback"))
|
||
(when (not (vc-up-to-date-p file))
|
||
(error "Please revert all modified workfiles before rollback")))
|
||
;; Accumulate changes associated with the fileset
|
||
(vc-setup-buffer "*vc-diff*")
|
||
(not-modified)
|
||
(message "Finding changes...")
|
||
(let* ((tip (vc-working-revision (car files)))
|
||
;; FIXME: `previous-revision' should take the fileset.
|
||
(previous (vc-call-backend backend 'previous-revision
|
||
(car files) tip)))
|
||
(vc-diff-internal nil vc-fileset previous tip))
|
||
;; Display changes
|
||
(unless (yes-or-no-p "Discard these revisions? ")
|
||
(error "Rollback canceled"))
|
||
(delete-windows-on "*vc-diff*")
|
||
(kill-buffer"*vc-diff*")
|
||
;; Do the actual reversions
|
||
(message "Rolling back %s..." (vc-delistify files))
|
||
(with-vc-properties
|
||
files
|
||
(vc-call-backend backend 'rollback files)
|
||
`((vc-state . ,'up-to-date)
|
||
(vc-checkout-time . , (nth 5 (file-attributes file)))
|
||
(vc-working-revision . nil)))
|
||
(dolist (f files) (vc-resynch-buffer f t t))
|
||
(message "Rolling back %s...done" (vc-delistify files))))
|
||
|
||
;;;###autoload
|
||
(define-obsolete-function-alias 'vc-revert-buffer 'vc-revert "23.1")
|
||
|
||
;;;###autoload
|
||
(defun vc-update ()
|
||
"Update the current fileset's files to their tip revisions.
|
||
For each one that contains no changes, and is not locked, then this simply
|
||
replaces the work file with the latest revision on its branch. If the file
|
||
contains changes, and the backend supports merging news, then any recent
|
||
changes from the current branch are merged into the working file."
|
||
(interactive)
|
||
(let* ((vc-fileset (vc-deduce-fileset))
|
||
(backend (car vc-fileset))
|
||
(files (cadr vc-fileset)))
|
||
(save-some-buffers ; save buffers visiting files
|
||
nil (lambda ()
|
||
(and (buffer-modified-p)
|
||
(let ((file (buffer-file-name)))
|
||
(and file (member file files))))))
|
||
(dolist (file files)
|
||
(if (vc-up-to-date-p file)
|
||
(vc-checkout file nil t)
|
||
(if (eq (vc-checkout-model backend (list file)) 'locking)
|
||
(if (eq (vc-state file) 'edited)
|
||
(error "%s"
|
||
(substitute-command-keys
|
||
"File is locked--type \\[vc-revert] to discard changes"))
|
||
(error "Unexpected file state (%s) -- type %s"
|
||
(vc-state file)
|
||
(substitute-command-keys
|
||
"\\[vc-next-action] to correct")))
|
||
(vc-maybe-resolve-conflicts
|
||
file (vc-call-backend backend 'merge-news file)))))))
|
||
|
||
(defun vc-version-backup-file (file &optional rev)
|
||
"Return name of backup file for revision REV of FILE.
|
||
If version backups should be used for FILE, and there exists
|
||
such a backup for REV or the working revision of file, return
|
||
its name; otherwise return nil."
|
||
(when (vc-call make-version-backups-p file)
|
||
(let ((backup-file (vc-version-backup-file-name file rev)))
|
||
(if (file-exists-p backup-file)
|
||
backup-file
|
||
;; there is no automatic backup, but maybe the user made one manually
|
||
(setq backup-file (vc-version-backup-file-name file rev 'manual))
|
||
(when (file-exists-p backup-file)
|
||
backup-file)))))
|
||
|
||
(defun vc-revert-file (file)
|
||
"Revert FILE back to the repository working revision it was based on."
|
||
(with-vc-properties
|
||
(list file)
|
||
(let ((backup-file (vc-version-backup-file file)))
|
||
(when backup-file
|
||
(copy-file backup-file file 'ok-if-already-exists 'keep-date)
|
||
(vc-delete-automatic-version-backups file))
|
||
(vc-call revert file backup-file))
|
||
`((vc-state . up-to-date)
|
||
(vc-checkout-time . ,(nth 5 (file-attributes file)))))
|
||
(vc-resynch-buffer file t t))
|
||
|
||
;;;###autoload
|
||
(defun vc-switch-backend (file backend)
|
||
"Make BACKEND the current version control system for FILE.
|
||
FILE must already be registered in BACKEND. The change is not
|
||
permanent, only for the current session. This function only changes
|
||
VC's perspective on FILE, it does not register or unregister it.
|
||
By default, this command cycles through the registered backends.
|
||
To get a prompt, use a prefix argument."
|
||
(interactive
|
||
(list
|
||
(or buffer-file-name
|
||
(error "There is no version-controlled file in this buffer"))
|
||
(let ((crt-bk (vc-backend buffer-file-name))
|
||
(backends nil))
|
||
(unless crt-bk
|
||
(error "File %s is not under version control" buffer-file-name))
|
||
;; Find the registered backends.
|
||
(dolist (crt vc-handled-backends)
|
||
(when (and (vc-call-backend crt 'registered buffer-file-name)
|
||
(not (eq crt-bk crt)))
|
||
(push crt backends)))
|
||
;; Find the next backend.
|
||
(let ((def (car backends))
|
||
(others backends))
|
||
(cond
|
||
((null others) (error "No other backend to switch to"))
|
||
(current-prefix-arg
|
||
(intern
|
||
(upcase
|
||
(completing-read
|
||
(format "Switch to backend [%s]: " def)
|
||
(mapcar (lambda (b) (list (downcase (symbol-name b)))) backends)
|
||
nil t nil nil (downcase (symbol-name def))))))
|
||
(t def))))))
|
||
(unless (eq backend (vc-backend file))
|
||
(vc-file-clearprops file)
|
||
(vc-file-setprop file 'vc-backend backend)
|
||
;; Force recomputation of the state
|
||
(unless (vc-call-backend backend 'registered file)
|
||
(vc-file-clearprops file)
|
||
(error "%s is not registered in %s" file backend))
|
||
(vc-mode-line file)))
|
||
|
||
;;;###autoload
|
||
(defun vc-transfer-file (file new-backend)
|
||
"Transfer FILE to another version control system NEW-BACKEND.
|
||
If NEW-BACKEND has a higher precedence than FILE's current backend
|
||
\(i.e. it comes earlier in `vc-handled-backends'), then register FILE in
|
||
NEW-BACKEND, using the revision number from the current backend as the
|
||
base level. If NEW-BACKEND has a lower precedence than the current
|
||
backend, then commit all changes that were made under the current
|
||
backend to NEW-BACKEND, and unregister FILE from the current backend.
|
||
\(If FILE is not yet registered under NEW-BACKEND, register it.)"
|
||
(let* ((old-backend (vc-backend file))
|
||
(edited (memq (vc-state file) '(edited needs-merge)))
|
||
(registered (vc-call-backend new-backend 'registered file))
|
||
(move
|
||
(and registered ; Never move if not registered in new-backend yet.
|
||
;; move if new-backend comes later in vc-handled-backends
|
||
(or (memq new-backend (memq old-backend vc-handled-backends))
|
||
(y-or-n-p "Final transfer? "))))
|
||
(comment nil))
|
||
(when (eq old-backend new-backend)
|
||
(error "%s is the current backend of %s" new-backend file))
|
||
(if registered
|
||
(set-file-modes file (logior (file-modes file) 128))
|
||
;; `registered' might have switched under us.
|
||
(vc-switch-backend file old-backend)
|
||
(let* ((rev (vc-working-revision file))
|
||
(modified-file (and edited (make-temp-file file)))
|
||
(unmodified-file (and modified-file (vc-version-backup-file file))))
|
||
;; Go back to the base unmodified file.
|
||
(unwind-protect
|
||
(progn
|
||
(when modified-file
|
||
(copy-file file modified-file 'ok-if-already-exists)
|
||
;; If we have a local copy of the unmodified file, handle that
|
||
;; here and not in vc-revert-file because we don't want to
|
||
;; delete that copy -- it is still useful for OLD-BACKEND.
|
||
(if unmodified-file
|
||
(copy-file unmodified-file file
|
||
'ok-if-already-exists 'keep-date)
|
||
(when (y-or-n-p "Get base revision from master? ")
|
||
(vc-revert-file file))))
|
||
(vc-call-backend new-backend 'receive-file file rev))
|
||
(when modified-file
|
||
(vc-switch-backend file new-backend)
|
||
(unless (eq (vc-checkout-model new-backend (list file)) 'implicit)
|
||
(vc-checkout file t nil))
|
||
(rename-file modified-file file 'ok-if-already-exists)
|
||
(vc-file-setprop file 'vc-checkout-time nil)))))
|
||
(when move
|
||
(vc-switch-backend file old-backend)
|
||
(setq comment (vc-call-backend old-backend 'comment-history file))
|
||
(vc-call-backend old-backend 'unregister file))
|
||
(vc-switch-backend file new-backend)
|
||
(when (or move edited)
|
||
(vc-file-setprop file 'vc-state 'edited)
|
||
(vc-mode-line file new-backend)
|
||
(vc-checkin file new-backend nil comment (stringp comment)))))
|
||
|
||
(defun vc-rename-master (oldmaster newfile templates)
|
||
"Rename OLDMASTER to be the master file for NEWFILE based on TEMPLATES."
|
||
(let* ((dir (file-name-directory (expand-file-name oldmaster)))
|
||
(newdir (or (file-name-directory newfile) ""))
|
||
(newbase (file-name-nondirectory newfile))
|
||
(masters
|
||
;; List of potential master files for `newfile'
|
||
(mapcar
|
||
(lambda (s) (vc-possible-master s newdir newbase))
|
||
templates)))
|
||
(when (or (file-symlink-p oldmaster)
|
||
(file-symlink-p (file-name-directory oldmaster)))
|
||
(error "This is unsafe in the presence of symbolic links"))
|
||
(rename-file
|
||
oldmaster
|
||
(catch 'found
|
||
;; If possible, keep the master file in the same directory.
|
||
(dolist (f masters)
|
||
(when (and f (string= (file-name-directory (expand-file-name f)) dir))
|
||
(throw 'found f)))
|
||
;; If not, just use the first possible place.
|
||
(dolist (f masters)
|
||
(and f (or (not (setq dir (file-name-directory f)))
|
||
(file-directory-p dir))
|
||
(throw 'found f)))
|
||
(error "New file lacks a version control directory")))))
|
||
|
||
;;;###autoload
|
||
(defun vc-delete-file (file)
|
||
"Delete file and mark it as such in the version control system."
|
||
(interactive "fVC delete file: ")
|
||
(setq file (expand-file-name file))
|
||
(let ((buf (get-file-buffer file))
|
||
(backend (vc-backend file)))
|
||
(unless backend
|
||
(error "File %s is not under version control"
|
||
(file-name-nondirectory file)))
|
||
(unless (vc-find-backend-function backend 'delete-file)
|
||
(error "Deleting files under %s is not supported in VC" backend))
|
||
(when (and buf (buffer-modified-p buf))
|
||
(error "Please save or undo your changes before deleting %s" file))
|
||
(let ((state (vc-state file)))
|
||
(when (eq state 'edited)
|
||
(error "Please commit or undo your changes before deleting %s" file))
|
||
(when (eq state 'conflict)
|
||
(error "Please resolve the conflicts before deleting %s" file)))
|
||
(unless (y-or-n-p (format "Really want to delete %s? "
|
||
(file-name-nondirectory file)))
|
||
(error "Abort!"))
|
||
(unless (or (file-directory-p file) (null make-backup-files)
|
||
(not (file-exists-p file)))
|
||
(with-current-buffer (or buf (find-file-noselect file))
|
||
(let ((backup-inhibited nil))
|
||
(backup-buffer))))
|
||
;; Bind `default-directory' so that the command that the backend
|
||
;; runs to remove the file is invoked in the correct context.
|
||
(let ((default-directory (file-name-directory file)))
|
||
(vc-call-backend backend 'delete-file file))
|
||
;; If the backend hasn't deleted the file itself, let's do it for him.
|
||
(when (file-exists-p file) (delete-file file))
|
||
;; Forget what VC knew about the file.
|
||
(vc-file-clearprops file)
|
||
;; Make sure the buffer is deleted and the *vc-dir* buffers are
|
||
;; updated after this.
|
||
(vc-resynch-buffer file nil t)))
|
||
|
||
;;;###autoload
|
||
(defun vc-rename-file (old new)
|
||
"Rename file OLD to NEW, and rename its master file likewise."
|
||
(interactive "fVC rename file: \nFRename to: ")
|
||
;; in CL I would have said (setq new (merge-pathnames new old))
|
||
(let ((old-base (file-name-nondirectory old)))
|
||
(when (and (not (string= "" old-base))
|
||
(string= "" (file-name-nondirectory new)))
|
||
(setq new (concat new old-base))))
|
||
(let ((oldbuf (get-file-buffer old)))
|
||
(when (and oldbuf (buffer-modified-p oldbuf))
|
||
(error "Please save files before moving them"))
|
||
(when (get-file-buffer new)
|
||
(error "Already editing new file name"))
|
||
(when (file-exists-p new)
|
||
(error "New file already exists"))
|
||
(let ((state (vc-state old)))
|
||
(unless (memq state '(up-to-date edited))
|
||
(error "Please %s files before moving them"
|
||
(if (stringp state) "check in" "update"))))
|
||
(vc-call rename-file old new)
|
||
(vc-file-clearprops old)
|
||
;; Move the actual file (unless the backend did it already)
|
||
(when (file-exists-p old) (rename-file old new))
|
||
;; ?? Renaming a file might change its contents due to keyword expansion.
|
||
;; We should really check out a new copy if the old copy was precisely equal
|
||
;; to some checked-in revision. However, testing for this is tricky....
|
||
(when oldbuf
|
||
(with-current-buffer oldbuf
|
||
(let ((buffer-read-only buffer-read-only))
|
||
(set-visited-file-name new))
|
||
(vc-mode-line new (vc-backend new))
|
||
(set-buffer-modified-p nil)))))
|
||
|
||
;;;###autoload
|
||
(defun vc-update-change-log (&rest args)
|
||
"Find change log file and add entries from recent version control logs.
|
||
Normally, find log entries for all registered files in the default
|
||
directory.
|
||
|
||
With prefix arg of \\[universal-argument], only find log entries for the current buffer's file.
|
||
|
||
With any numeric prefix arg, find log entries for all currently visited
|
||
files that are under version control. This puts all the entries in the
|
||
log for the default directory, which may not be appropriate.
|
||
|
||
From a program, any ARGS are assumed to be filenames for which
|
||
log entries should be gathered."
|
||
(interactive
|
||
(cond ((consp current-prefix-arg) ;C-u
|
||
(list buffer-file-name))
|
||
(current-prefix-arg ;Numeric argument.
|
||
(let ((files nil)
|
||
(buffers (buffer-list))
|
||
file)
|
||
(while buffers
|
||
(setq file (buffer-file-name (car buffers)))
|
||
(and file (vc-backend file)
|
||
(setq files (cons file files)))
|
||
(setq buffers (cdr buffers)))
|
||
files))
|
||
(t
|
||
;; Don't supply any filenames to backend; this means
|
||
;; it should find all relevant files relative to
|
||
;; the default-directory.
|
||
nil)))
|
||
(vc-call-backend (vc-responsible-backend default-directory)
|
||
'update-changelog args))
|
||
|
||
;; functions that operate on RCS revision numbers. This code should
|
||
;; also be moved into the backends. It stays for now, however, since
|
||
;; it is used in code below.
|
||
(defun vc-branch-p (rev)
|
||
"Return t if REV is a branch revision."
|
||
(not (eq nil (string-match "\\`[0-9]+\\(\\.[0-9]+\\.[0-9]+\\)*\\'" rev))))
|
||
|
||
;;;###autoload
|
||
(defun vc-branch-part (rev)
|
||
"Return the branch part of a revision number REV."
|
||
(let ((index (string-match "\\.[0-9]+\\'" rev)))
|
||
(when index
|
||
(substring rev 0 index))))
|
||
|
||
(define-obsolete-function-alias
|
||
'vc-default-previous-version 'vc-default-previous-revision "23.1")
|
||
|
||
(defun vc-default-responsible-p (backend file)
|
||
"Indicate whether BACKEND is reponsible for FILE.
|
||
The default is to return nil always."
|
||
nil)
|
||
|
||
(defun vc-default-could-register (backend file)
|
||
"Return non-nil if BACKEND could be used to register FILE.
|
||
The default implementation returns t for all files."
|
||
t)
|
||
|
||
(defun vc-default-latest-on-branch-p (backend file)
|
||
"Return non-nil if FILE is the latest on its branch.
|
||
This default implementation always returns non-nil, which means that
|
||
editing non-current revisions is not supported by default."
|
||
t)
|
||
|
||
(defun vc-default-init-revision (backend) vc-default-init-revision)
|
||
|
||
(defun vc-default-find-revision (backend file rev buffer)
|
||
"Provide the new `find-revision' op based on the old `checkout' op.
|
||
This is only for compatibility with old backends. They should be updated
|
||
to provide the `find-revision' operation instead."
|
||
(let ((tmpfile (make-temp-file (expand-file-name file))))
|
||
(unwind-protect
|
||
(progn
|
||
(vc-call-backend backend 'checkout file nil rev tmpfile)
|
||
(with-current-buffer buffer
|
||
(insert-file-contents-literally tmpfile)))
|
||
(delete-file tmpfile))))
|
||
|
||
(defun vc-default-rename-file (backend old new)
|
||
(condition-case nil
|
||
(add-name-to-file old new)
|
||
(error (rename-file old new)))
|
||
(vc-delete-file old)
|
||
(with-current-buffer (find-file-noselect new)
|
||
(vc-register)))
|
||
|
||
(defalias 'vc-default-check-headers 'ignore)
|
||
|
||
(defun vc-default-log-view-mode (backend) (log-view-mode))
|
||
|
||
(defun vc-default-show-log-entry (backend rev)
|
||
(with-no-warnings
|
||
(log-view-goto-rev rev)))
|
||
|
||
(defun vc-default-comment-history (backend file)
|
||
"Return a string with all log entries stored in BACKEND for FILE."
|
||
(when (vc-find-backend-function backend 'print-log)
|
||
(with-current-buffer "*vc*"
|
||
(vc-call-backend backend 'print-log (list file))
|
||
(buffer-string))))
|
||
|
||
(defun vc-default-receive-file (backend file rev)
|
||
"Let BACKEND receive FILE from another version control system."
|
||
(vc-call-backend backend 'register (list file) rev ""))
|
||
|
||
(defun vc-default-retrieve-tag (backend dir name update)
|
||
(if (string= name "")
|
||
(progn
|
||
(vc-file-tree-walk
|
||
dir
|
||
(lambda (f) (and
|
||
(vc-up-to-date-p f)
|
||
(vc-error-occurred
|
||
(vc-call-backend backend 'checkout f nil "")
|
||
(when update (vc-resynch-buffer f t t)))))))
|
||
(let ((result (vc-tag-precondition dir)))
|
||
(if (stringp result)
|
||
(error "File %s is locked" result)
|
||
(setq update (and (eq result 'visited) update))
|
||
(vc-file-tree-walk
|
||
dir
|
||
(lambda (f) (vc-error-occurred
|
||
(vc-call-backend backend 'checkout f nil name)
|
||
(when update (vc-resynch-buffer f t t)))))))))
|
||
|
||
(defun vc-default-revert (backend file contents-done)
|
||
(unless contents-done
|
||
(let ((rev (vc-working-revision file))
|
||
(file-buffer (or (get-file-buffer file) (current-buffer))))
|
||
(message "Checking out %s..." file)
|
||
(let ((failed t)
|
||
(backup-name (car (find-backup-file-name file))))
|
||
(when backup-name
|
||
(copy-file file backup-name 'ok-if-already-exists 'keep-date)
|
||
(unless (file-writable-p file)
|
||
(set-file-modes file (logior (file-modes file) 128))))
|
||
(unwind-protect
|
||
(let ((coding-system-for-read 'no-conversion)
|
||
(coding-system-for-write 'no-conversion))
|
||
(with-temp-file file
|
||
(let ((outbuf (current-buffer)))
|
||
;; Change buffer to get local value of vc-checkout-switches.
|
||
(with-current-buffer file-buffer
|
||
(let ((default-directory (file-name-directory file)))
|
||
(vc-call-backend backend 'find-revision
|
||
file rev outbuf)))))
|
||
(setq failed nil))
|
||
(when backup-name
|
||
(if failed
|
||
(rename-file backup-name file 'ok-if-already-exists)
|
||
(and (not vc-make-backup-files) (delete-file backup-name))))))
|
||
(message "Checking out %s...done" file))))
|
||
|
||
(defalias 'vc-default-revision-completion-table 'ignore)
|
||
(defalias 'vc-default-mark-resolved 'ignore)
|
||
|
||
(defun vc-default-dir-status-files (backend dir files default-state update-function)
|
||
(funcall update-function
|
||
(mapcar (lambda (file) (list file default-state)) files)))
|
||
|
||
(defun vc-check-headers ()
|
||
"Check if the current file has any headers in it."
|
||
(interactive)
|
||
(vc-call-backend (vc-backend buffer-file-name) 'check-headers))
|
||
|
||
|
||
|
||
;; These things should probably be generally available
|
||
|
||
(defun vc-string-prefix-p (prefix string)
|
||
(let ((lpref (length prefix)))
|
||
(and (>= (length string) lpref)
|
||
(eq t (compare-strings prefix nil nil string nil lpref)))))
|
||
|
||
(defun vc-file-tree-walk (dirname func &rest args)
|
||
"Walk recursively through DIRNAME.
|
||
Invoke FUNC f ARGS on each VC-managed file f underneath it."
|
||
(vc-file-tree-walk-internal (expand-file-name dirname) func args)
|
||
(message "Traversing directory %s...done" dirname))
|
||
|
||
(defun vc-file-tree-walk-internal (file func args)
|
||
(if (not (file-directory-p file))
|
||
(when (vc-backend file) (apply func file args))
|
||
(message "Traversing directory %s..." (abbreviate-file-name file))
|
||
(let ((dir (file-name-as-directory file)))
|
||
(mapcar
|
||
(lambda (f) (or
|
||
(string-equal f ".")
|
||
(string-equal f "..")
|
||
(member f vc-directory-exclusion-list)
|
||
(let ((dirf (expand-file-name f dir)))
|
||
(or
|
||
(file-symlink-p dirf) ;; Avoid possible loops.
|
||
(vc-file-tree-walk-internal dirf func args)))))
|
||
(directory-files dir)))))
|
||
|
||
(provide 'vc)
|
||
|
||
;; arch-tag: ca82c1de-3091-4e26-af92-460abc6213a6
|
||
;;; vc.el ends here
|