;;; vc-mtn.el --- VC backend for Monotone -*- lexical-binding: t -*- ;; Copyright (C) 2007-2021 Free Software Foundation, Inc. ;; Author: Stefan Monnier ;; Keywords: vc ;; Package: vc ;; 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 . ;;; Commentary: ;; ;;; TODO: ;; - The `previous-version' VC method needs to be supported, 'D' in ;; log-view-mode uses it. ;;; Code: (eval-when-compile (require 'vc)) (defgroup vc-mtn nil "VC Monotone (mtn) backend." :version "24.1" :group 'vc) (defcustom vc-mtn-diff-switches t "String or list of strings specifying switches for monotone diff under VC. If nil, use the value of `vc-diff-switches'. If t, use no switches." :type '(choice (const :tag "Unspecified" nil) (const :tag "None" t) (string :tag "Argument String") (repeat :tag "Argument List" :value ("") string)) :version "23.1" :group 'vc-mtn) (defcustom vc-mtn-annotate-switches nil "String or list of strings specifying switches for mtn annotate under VC. If nil, use the value of `vc-annotate-switches'. If t, use no switches." :type '(choice (const :tag "Unspecified" nil) (const :tag "None" t) (string :tag "Argument String") (repeat :tag "Argument List" :value ("") string)) :version "25.1" :group 'vc-mtn) (defcustom vc-mtn-program "mtn" "Name of the monotone executable." :type 'string :group 'vc-mtn) ;; Clear up the cache to force vc-call to check again and discover ;; new functions when we reload this file. (put 'Mtn 'vc-functions nil) (unless (executable-find vc-mtn-program) ;; vc-mtn.el is 100% non-functional without the `mtn' executable. (setq vc-handled-backends (delq 'Mtn vc-handled-backends))) ;;;###autoload (defconst vc-mtn-admin-dir "_MTN" "Name of the monotone directory.") ;;;###autoload (defconst vc-mtn-admin-format (concat vc-mtn-admin-dir "/format") "Name of the monotone directory's format file.") ;;;###autoload (defun vc-mtn-registered (file) ;;;###autoload (if (vc-find-root file vc-mtn-admin-format) ;;;###autoload (progn ;;;###autoload (load "vc-mtn" nil t) ;;;###autoload (vc-mtn-registered file)))) (defun vc-mtn-revision-granularity () 'repository) (defun vc-mtn-checkout-model (_files) 'implicit) (defun vc-mtn-root (file) (setq file (expand-file-name file) file (if (file-directory-p file) (file-name-as-directory file) (file-name-directory file))) (or (vc-file-getprop file 'vc-mtn-root) (vc-file-setprop file 'vc-mtn-root (vc-find-root file vc-mtn-admin-format)))) (defun vc-mtn-find-admin-dir (file) "Return the administrative directory of FILE." (expand-file-name vc-mtn-admin-dir (vc-mtn-root file))) (defun vc-mtn-find-ignore-file (file) "Return the mtn ignore file that controls FILE." (expand-file-name ".mtnignore" (vc-mtn-root file))) (defun vc-mtn-registered (file) (let ((root (vc-mtn-root file))) (when root (vc-mtn-state file)))) (defun vc-mtn-command (buffer okstatus files &rest flags) "A wrapper around `vc-do-command' for use in vc-mtn.el." (let ((process-environment ;; Avoid localization of messages so we can parse the output. (cons "LC_MESSAGES=C" process-environment))) (apply 'vc-do-command (or buffer "*vc*") okstatus vc-mtn-program files flags))) (defun vc-mtn-state (file) ;; If `mtn' fails or returns status>0, or if the search files, just ;; return nil. (ignore-errors (with-temp-buffer (vc-mtn-command t 0 file "status") (goto-char (point-min)) (re-search-forward "^ \\(?:\\(patched\\)\\|\\(added\\) \\(?:.*\\)\\)\\|no changes$") (cond ((match-end 1) 'edited) ((match-end 2) 'added) (t 'up-to-date))))) (defun vc-mtn-after-dir-status (update-function) (let (result) (goto-char (point-min)) (re-search-forward "\\(?:Current b\\|B\\)ranch: *\\(.*\\)\n?\nChanges against parent \\(.*\\)" nil t) (while (re-search-forward "^ \\(?:\\(patched \\)\\|\\(added \\)\\)\\(.*\\)$" nil t) (cond ((match-end 1) (push (list (match-string 3) 'edited) result)) ((match-end 2) (push (list (match-string 3) 'added) result)))) (funcall update-function result))) ;; dir-status-files called from vc-dir, which loads vc, ;; which loads vc-dispatcher. (declare-function vc-exec-after "vc-dispatcher" (code)) (defun vc-mtn-dir-status-files (dir _files update-function) (vc-mtn-command (current-buffer) 'async dir "status") (vc-run-delayed (vc-mtn-after-dir-status update-function))) (defun vc-mtn-working-revision (file) ;; If `mtn' fails or returns status>0, or if the search fails, just ;; return nil. (ignore-errors (with-temp-buffer (vc-mtn-command t 0 file "status") (goto-char (point-min)) (re-search-forward "\\(?:Current b\\|B\\)ranch: *\\(.*\\)\n?\nChanges against parent \\(.*\\)") (match-string 2)))) (defun vc-mtn-workfile-branch (file) ;; If `mtn' fails or returns status>0, or if the search files, just ;; return nil. (ignore-errors (with-temp-buffer (vc-mtn-command t 0 file "status") (goto-char (point-min)) (re-search-forward "\\(?:Current b\\|B\\)ranch: *\\(.*\\)\n?\nChanges against parent \\(.*\\)") (match-string 1)))) ;; Mode-line rewrite code copied from vc-arch.el. (defcustom vc-mtn-mode-line-rewrite '(("\\`[^:/#]*[:/#]" . "")) ;Drop the host part. "Rewrite rules to shorten Mtn's revision names on the mode-line." :type '(repeat (cons regexp string)) :version "22.2" :group 'vc-mtn) (defun vc-mtn-mode-line-string (file) "Return a string for `vc-mode-line' to put in the mode line for FILE." (let ((branch (vc-mtn-workfile-branch file))) (if branch (progn (dolist (rule vc-mtn-mode-line-rewrite) (if (string-match (car rule) branch) (setq branch (replace-match (cdr rule) t nil branch)))) (format "Mtn%c%s" (pcase (vc-state file) ((or 'up-to-date 'needs-update) ?-) ('added ?@) (_ ?:)) branch)) ""))) (defun vc-mtn-register (files &optional _comment) (vc-mtn-command nil 0 files "add")) (defun vc-mtn-responsible-p (file) (vc-mtn-root file)) (declare-function log-edit-extract-headers "log-edit" (headers string)) (defun vc-mtn-checkin (files comment &optional _rev) (apply 'vc-mtn-command nil 0 files (nconc (list "commit" "-m") (log-edit-extract-headers '(("Author" . "--author") ("Date" . "--date")) comment)))) (defun vc-mtn-find-revision (file rev buffer) ;; null rev means latest revision (if rev (vc-mtn-command buffer 0 file "cat" "-r" rev) (vc-mtn-command buffer 0 file "cat"))) ;; (defun vc-mtn-checkout (file &optional rev) ;; ) (defun vc-mtn-revert (file &optional contents-done) (unless contents-done (vc-mtn-command nil 0 file "revert"))) (defun vc-mtn-print-log (files buffer &optional _shortlog start-revision limit) "Print commit logs associated with FILES into specified BUFFER. _SHORTLOG is ignored. If START-REVISION is non-nil, it is the newest revision to show. If LIMIT is non-nil, show no more than this many entries." (apply 'vc-mtn-command buffer 0 files "log" (append (when start-revision (list "--from" (format "%s" start-revision))) (when limit (list "--last" (format "%s" limit)))))) (defvar log-view-message-re) (defvar log-view-file-re) (defvar log-view-font-lock-keywords) (defvar log-view-per-file-logs) (define-derived-mode vc-mtn-log-view-mode log-view-mode "Mtn-Log-View" ;; Don't match anything. (setq-local log-view-file-re regexp-unmatchable) (setq-local log-view-per-file-logs nil) ;; TODO: Use a more precise regexp than "[ |/]+" to avoid false positives ;; in the ChangeLog text. (setq-local log-view-message-re "^[ |/]+Revision: \\([0-9a-f]+\\)") (require 'add-log) ;For change-log faces. (setq-local log-view-font-lock-keywords (append log-view-font-lock-keywords '(("^[ |]+Author: \\(.*\\)" (1 'change-log-email)) ("^[ |]+Date: \\(.*\\)" (1 'change-log-date)))))) ;; (defun vc-mtn-show-log-entry (revision) ;; ) (autoload 'vc-switches "vc") (defun vc-mtn-diff (files &optional rev1 rev2 buffer _async) "Get a difference report using monotone between two revisions of FILES." (apply 'vc-mtn-command (or buffer "*vc-diff*") 1 ; bug#21969 files "diff" (append (vc-switches 'mtn 'diff) (if rev1 (list "-r" rev1)) (if rev2 (list "-r" rev2))))) (defun vc-mtn-annotate-command (file buf &optional rev) (apply #'vc-mtn-command buf 'async file "annotate" (append (vc-switches 'mtn 'annotate) (if rev (list "-r" rev))))) (declare-function vc-annotate-convert-time "vc-annotate" (&optional time)) (defconst vc-mtn-annotate-full-re "^ *\\([0-9a-f]+\\)\\.* by [^ ]+ \\([0-9]+\\)-\\([0-9]+\\)-\\([0-9]+\\): ") (defconst vc-mtn-annotate-any-re (concat "^\\(?: +: \\|" vc-mtn-annotate-full-re "\\)")) (defun vc-mtn-annotate-time () (when (looking-at vc-mtn-annotate-any-re) (goto-char (match-end 0)) (let ((year (match-string 2))) (if (not year) ;; Look for the date on a previous line. (save-excursion (get-text-property (1- (previous-single-property-change (point) 'vc-mtn-time nil (point-min))) 'vc-mtn-time)) (let ((time (vc-annotate-convert-time (encode-time 0 0 0 (string-to-number (match-string 4)) (string-to-number (match-string 3)) (string-to-number year) t)))) (let ((inhibit-read-only t) (inhibit-modification-hooks t)) (put-text-property (match-beginning 0) (match-end 0) 'vc-mtn-time time)) time))))) (defun vc-mtn-annotate-extract-revision-at-line () (save-excursion (when (or (looking-at vc-mtn-annotate-full-re) (re-search-backward vc-mtn-annotate-full-re nil t)) (match-string 1)))) ;;; Revision completion. (defun vc-mtn-list-tags () (with-temp-buffer (vc-mtn-command t 0 nil "list" "tags") (goto-char (point-min)) (let ((tags ())) (while (re-search-forward "^[^ ]+" nil t) (push (match-string 0) tags)) tags))) (defun vc-mtn-list-branches () (with-temp-buffer (vc-mtn-command t 0 nil "list" "branches") (goto-char (point-min)) (let ((branches ())) (while (re-search-forward "^.+" nil t) (push (match-string 0) branches)) branches))) (defun vc-mtn-list-revision-ids (prefix) (with-temp-buffer (vc-mtn-command t 0 nil "complete" "revision" prefix) (goto-char (point-min)) (let ((ids ())) (while (re-search-forward "^.+" nil t) (push (match-string 0) ids)) ids))) (defun vc-mtn-revision-completion-table (_files) ;; What about using `files'?!? --Stef (lambda (string pred action) (cond ;; Special chars for composite selectors. ((string-match ".*[^\\]\\(\\\\\\\\\\)*[/|;(]" string) (completion-table-with-context (substring string 0 (match-end 0)) (vc-mtn-revision-completion-table nil) (substring string (match-end 0)) pred action)) ;; "Tag" selectors. ((string-match "\\`t:" string) (complete-with-action action (mapcar (lambda (tag) (concat "t:" tag)) (vc-mtn-list-tags)) string pred)) ;; "Branch" or "Head" selectors. ((string-match "\\`[hb]:" string) (let ((prefix (match-string 0 string))) (complete-with-action action (mapcar (lambda (tag) (concat prefix tag)) (vc-mtn-list-branches)) string pred))) ;; "ID" selectors. ((string-match "\\`i:" string) (complete-with-action action (mapcar (lambda (tag) (concat "i:" tag)) (vc-mtn-list-revision-ids (substring string (match-end 0)))) string pred)) (t (complete-with-action action '("t:" "b:" "h:" "i:" ;; Completion not implemented for these. "c:" "a:" "k:" "d:" "m:" "e:" "l:" "i:" "p:" ;; These have no arg to complete. "u:" "w:" ;; Selector functions. "difference(" "lca(" "max(" "ancestors(" "descendants(" "parents(" "children(" "pick(") string pred))))) (provide 'vc-mtn) ;;; vc-mtn.el ends here