X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/68eb03ca88b06f7f4428db0164ae9758c29ffda4..052ca4d1d2fffca52c6e69c4f8cd480ca547463e:/lisp/vc-arch.el diff --git a/lisp/vc-arch.el b/lisp/vc-arch.el index 2ce5ef6765..c8efca0283 100644 --- a/lisp/vc-arch.el +++ b/lisp/vc-arch.el @@ -25,31 +25,37 @@ ;;; Commentary: ;; The home page of the Arch version control system is at -;; +;; ;; http://www.gnuarch.org/ -;; +;; ;; This is derived from vc-mcvs.el as follows: ;; - cp vc-mcvs.el vc-arch.el and then M-% mcvs RET arch RET ;; ;; Then of course started the hacking. ;; ;; What has been partly tested: -;; - Open a file -;; - C-x v = without any prefix arg -;; - C-x v v to commit a change to a single file +;; - Open a file. +;; - C-x v = without any prefix arg. +;; - C-x v v to commit a change to a single file. ;; Bugs: +;; - *VC-log*'s initial content lacks the `Summary:' lines. ;; - All files under the tree are considered as "under Arch's control" ;; without regards to =tagging-method and such. ;; - Files are always considered as `edited'. +;; - C-x v l does not work. ;; - C-x v i does not work. +;; - C-x v ~ does not work. +;; - C-x v u does not work. +;; - C-x v s does not work. +;; - C-x v r does not work. ;; - VC-dired does not work. ;; - And more... ;;; Code: -(eval-when-compile (require 'vc)) +(eval-when-compile (require 'vc) (require 'cl)) ;;; ;;; Customization options @@ -79,17 +85,103 @@ ;;;###autoload (load "vc-arch") ;;;###autoload (vc-arch-registered file))))) -(defun vc-arch-add-tag () +(defun vc-arch-add-tagline () "Add an `arch-tag' to the end of the current file." (interactive) + (comment-normalize-vars) (goto-char (point-max)) (forward-comment -1) (unless (bolp) (insert "\n")) - (let ((beg (point))) + (let ((beg (point)) + (idfile (and buffer-file-name + (expand-file-name + (concat ".arch-ids/" + (file-name-nondirectory buffer-file-name) + ".id") + (file-name-directory buffer-file-name))))) (insert "arch-tag: ") - (call-process "uuidgen" nil t) ;Also inserts a terminal newline. + (if (and idfile (file-exists-p idfile)) + ;; If the file is unreadable, we do want to get an error here. + (progn + (insert-file-contents idfile) + (forward-line 1) + (delete-file idfile)) + (condition-case nil + (call-process "uuidgen" nil t) + (file-error (insert (format "%s <%s> %s" + (current-time-string) + user-mail-address + (+ (nth 2 (current-time)) + (buffer-size))))))) (comment-region beg (point)))) +(defconst vc-arch-tagline-re "^\\W*arch-tag:[ \t]*\\(.*[^ \t\n]\\)") + +(defun vc-arch-file-source-p (file) + "Can return nil, `maybe' or a non-nil value. +Only the value `maybe' can be trusted :-(." + ;; FIXME: Check the tag and name of parent dirs. + (unless (string-match "\\`[,+]" (file-name-nondirectory file)) + (or (string-match "\\`{arch}/" + (file-relative-name file (vc-arch-root file))) + (file-exists-p + ;; Check the presence of an ID file. + (expand-file-name + (concat ".arch-ids/" (file-name-nondirectory file) ".id") + (file-name-directory file))) + ;; Check the presence of a tagline. + (with-current-buffer (find-file-noselect file) + (save-excursion + (goto-char (point-max)) + (or (re-search-backward vc-arch-tagline-re (- (point) 1000) t) + (progn + (goto-char (point-min)) + (re-search-forward vc-arch-tagline-re (+ (point) 1000) t))))) + ;; FIXME: check =tagging-method to see whether untagged files might + ;; be source or not. + (with-current-buffer + (find-file-noselect (expand-file-name "{arch}/=tagging-method" + (vc-arch-root file))) + (let ((untagged-source t)) ;Default is `names'. + (save-excursion + (goto-char (point-min)) + (if (re-search-forward "^[ \t]*\\(\\(tagline\\|implicit\\|names\\)\\|explicit\\)" nil t) + (setq untagged-source (match-end 2))) + (if (re-search-forward "^[ \t]*untagged-source[ \t]+\\(\\(source\\)\\|precious\\|backup\\|junk\\|unrecognized\\)" nil t) + (setq untagged-source (match-end 2)))) + (if untagged-source 'maybe)))))) + +(defun vc-arch-file-id (file) + ;; Don't include the kind of ID this is because it seems to be too messy. + (let ((idfile (expand-file-name + (concat ".arch-ids/" (file-name-nondirectory file) ".id") + (file-name-directory file)))) + (if (file-exists-p idfile) + (with-temp-buffer + (insert-file-contents idfile) + (looking-at ".*[^ \n\t]") + (match-string 0))) + (with-current-buffer (find-file-noselect file) + (save-excursion + (goto-char (point-max)) + (if (or (re-search-backward vc-arch-tagline-re (- (point) 1000) t) + (progn + (goto-char (point-min)) + (re-search-forward vc-arch-tagline-re (+ (point) 1000) t))) + (match-string 1) + (concat "./" (file-relative-name file (vc-arch-root file)))))))) + +(defun vc-arch-tagging-method (file) + (with-current-buffer + (find-file-noselect + (expand-file-name "{arch}/=tagging-method" (vc-arch-root file))) + (save-excursion + (goto-char (point-min)) + (if (re-search-forward + "^[ \t]*\\(tagline\\|implicit\\|names\\|explicit\\)" nil t) + (intern (match-string 1)) + 'names)))) + (defun vc-arch-root (file) "Return the root directory of a Arch project, if any." (or (vc-file-getprop file 'arch-root) @@ -99,16 +191,30 @@ (while (not (or root (equal file (setq file (file-name-directory file))) (null file))) - (if (file-directory-p (expand-file-name "{arch}" file)) + ;; Check the =tagging-method, in case someone naively manually + ;; creates a {arch} directory somewhere. + (if (file-exists-p (expand-file-name "{arch}/=tagging-method" file)) (setq root file) (setq file (directory-file-name file)))) root)))) +(defun vc-arch-register (file &optional rev comment) + (if rev (error "Explicit initial revision not supported for Arch")) + (let ((tagmet (vc-arch-tagging-method file))) + (if (and (memq tagmet '(tagline implicit)) comment-start) + (with-current-buffer (find-file-noselect file) + (if (buffer-modified-p) + (error "Save %s first" (buffer-name))) + (vc-arch-add-tagline) + (save-buffer)) + (vc-arch-command nil 0 file "add")))) + (defun vc-arch-registered (file) - ;; Don't check whether it's source or not. Checking would require - ;; running TLA, so it's better to not do it, so it also works if TLA is - ;; not installed. - (vc-arch-root file)) + ;; Don't seriously check whether it's source or not. Checking would + ;; require running TLA, so it's better to not do it, so it also works if + ;; TLA is not installed. + (and (vc-arch-root file) + (vc-arch-file-source-p file))) (defun vc-arch-default-version (file) (or (vc-file-getprop (vc-arch-root file) 'arch-default-version) @@ -131,7 +237,46 @@ Return non-nil if FILE is unchanged." ;; There's no checkout operation and merging is not done from VC ;; so the only operation that's state dependent that VC supports is commit ;; which is only activated if the file is `edited'. - 'edited) + (let* ((root (vc-arch-root file)) + (ver (vc-arch-default-version file)) + (pat (concat "\\`" (subst-char-in-string ?/ ?% ver))) + (dir (expand-file-name ",,inode-sigs/" + (expand-file-name "{arch}" root))) + (sigfile nil)) + (dolist (f (if (file-directory-p dir) (directory-files dir t pat))) + (if (or (not sigfile) (file-newer-than-file-p f sigfile)) + (setq sigfile f))) + (if (not sigfile) + 'edited ;We know nothing. + (let ((id (vc-arch-file-id file))) + (setq id (replace-regexp-in-string "[ \t]" "_" id)) + (with-current-buffer (find-file-noselect sigfile) + (goto-char (point-min)) + (while (and (search-forward id nil 'move) + (progn (goto-char (- (match-beginning 0) 2)) + ;; Ignore E_ entries used for foo.id files. + (or (not (bolp)) (looking-at "E_"))))) + (if (eobp) + ;; ID not found. + (if (equal (file-name-nondirectory sigfile) + (subst-char-in-string + ?/ ?% (vc-arch-workfile-version file))) + 'added + ;; Might be `added' or `up-to-date' as well. + ;; FIXME: Check in the patch logs to find out. + 'edited) + ;; Found the ID, let's check the inode. + (if (not (re-search-forward + "\t.*mtime=\\([0-9]+\\):size=\\([0-9]+\\)" + (line-end-position) t)) + ;; Buh? Unexpected format. + 'edited + (let ((ats (file-attributes file))) + (if (and (= (nth 7 ats) (string-to-number (match-string 2))) + (equal (format-time-string "%s" (nth 5 ats)) + (match-string 1))) + 'up-to-date + 'edited))))))))) (defun vc-arch-workfile-version (file) (let* ((root (expand-file-name "{arch}" (vc-arch-root file))) @@ -141,7 +286,7 @@ Return non-nil if FILE is unchanged." (category (match-string 4 defbranch)) (branch (match-string 3 defbranch)) (version (match-string 2 defbranch)) - (rev-nb 0) + (sealed nil) (rev-nb 0) (rev nil) logdir tmp) (setq logdir (expand-file-name category root)) @@ -149,16 +294,20 @@ Return non-nil if FILE is unchanged." (setq logdir (expand-file-name version logdir)) (setq logdir (expand-file-name archive logdir)) (setq logdir (expand-file-name "patch-log" logdir)) + ;; Revision names go: base-0, patch-N, version-0, versionfix-N. (dolist (file (directory-files logdir)) + (when (and (eq (aref file 0) ?v) (not sealed)) + (setq sealed t rev-nb 0)) (if (and (string-match "-\\([0-9]+\\)\\'" file) (setq tmp (string-to-number (match-string 1 file))) + (or (not sealed) (eq (aref file 0) ?v)) (>= tmp rev-nb)) (setq rev-nb tmp rev file))) (concat defbranch "--" rev))))) (defcustom vc-arch-mode-line-rewrite - '(("\\`.*--\\(.*--.*\\)--.*-\\([0-9]+\\)\\'" . "\\2[\\1]")) + '(("\\`.*--\\(.*--.*\\)--\\(v?\\).*-\\([0-9]+\\)\\'" . "\\2\\3[\\1]")) "Rewrite rules to shorten Arch's revision names on the mode-line." :type '(repeat (cons regexp string))) @@ -169,25 +318,28 @@ Return non-nil if FILE is unchanged." (if (string-match (car rule) rev) (setq rev (replace-match (cdr rule) t nil rev)))) (format "Arch%c%s" - (if (memq (vc-state file) '(up-to-date needs-patch)) ?- ?:) + (case (vc-state file) + ((up-to-date needs-patch) ?-) + (added ?@) + (t ?:)) rev))) (defun vc-arch-diff3-rej-p (rej) - (and (eq (nth 7 (file-attributes rej)) 56) - (with-temp-buffer - (insert-file-contents rej) - (goto-char (point-min)) - (looking-at "Conflicts occured, diff3 conflict markers left in file\\.$")))) + (let ((attrs (file-attributes rej))) + (and attrs (< (nth 7 attrs) 60) + (with-temp-buffer + (insert-file-contents rej) + (goto-char (point-min)) + (looking-at "Conflicts occured, diff3 conflict markers left in file\\."))))) (defun vc-arch-delete-rej-if-obsolete () - "For use in `write-file-functions'." - (let ((rej (concat buffer-file-name ".rej"))) - (when (and buffer-file-name (vc-arch-diff3-rej-p rej)) - (if (not (re-search-forward "^>>>>>>> " nil t)) - ;; The .rej file is obsolete. - (condition-case nil (delete-file rej) (error nil))))) - ;; This did not save the buffer. - nil) + "For use in `after-save-hook'." + (save-excursion + (let ((rej (concat buffer-file-name ".rej"))) + (when (and buffer-file-name (vc-arch-diff3-rej-p rej)) + (if (not (re-search-forward "^<<<<<<< " nil t)) + ;; The .rej file is obsolete. + (condition-case nil (delete-file rej) (error nil))))))) (defun vc-arch-find-file-hook () (let ((rej (concat buffer-file-name ".rej"))) @@ -195,25 +347,42 @@ Return non-nil if FILE is unchanged." (if (vc-arch-diff3-rej-p rej) (save-excursion (goto-char (point-min)) - (if (not (re-search-forward "^>>>>>>> " nil t)) + (if (not (re-search-forward "^<<<<<<< " nil t)) ;; The .rej file is obsolete. (condition-case nil (delete-file rej) (error nil)) (smerge-mode 1) - (add-hook 'write-file-functions + (add-hook 'after-save-hook 'vc-arch-delete-rej-if-obsolete nil t) (message "There are unresolved conflicts in this file"))) (message "There are unresolved conflicts in %s" (file-name-nondirectory rej)))))) +(defun vc-arch-find-file-not-found-hook () + ;; Do nothing. We are not sure whether the file is `source' or not, + ;; so we shouldn't ask the user whether she wants to check it out. + ) + (defun vc-arch-checkout-model (file) 'implicit) (defun vc-arch-checkin (file rev comment) (if rev (error "Committing to a specific revision is unsupported.")) - (vc-arch-command nil 0 file "commit" "-L" comment "--" - (vc-switches 'Arch 'checkin))) + (let ((summary (file-relative-name file (vc-arch-root file)))) + ;; Extract a summary from the comment. + (when (or (string-match "\\`Summary:[ \t]*\\(.*[^ \t\n]\\)\\([ \t]*\n\\)*" comment) + (string-match "\\`[ \t]*\\(.*[^ \t\n]\\)[ \t]*\\(\n?\\'\\|\n\\([ \t]*\n\\)+\\)" comment)) + (setq summary (match-string 1 comment)) + (setq comment (substring comment (match-end 0)))) + (vc-arch-command nil 0 file "commit" "-s" summary "-L" comment "--" + (vc-switches 'Arch 'checkin)))) (defun vc-arch-diff (file &optional oldvers newvers) "Get a difference report using Arch between two versions of FILE." + (if (and newvers + (vc-up-to-date-p file) + (equal newvers (vc-workfile-version file))) + ;; Newvers is the base revision and the current file is unchanged, + ;; so we can diff with the current file. + (setq newvers nil)) (if newvers (error "Diffing specific revisions not implemented.") (let* ((async (fboundp 'start-process)) @@ -238,10 +407,14 @@ Return non-nil if FILE is unchanged." (defun vc-arch-rename-file (old new) (vc-arch-command nil 0 new "mv" (file-relative-name old))) +(defalias 'vc-arch-responsible-p 'vc-arch-root) + (defun vc-arch-command (buffer okstatus file &rest flags) "A wrapper around `vc-do-command' for use in vc-arch.el." (apply 'vc-do-command buffer okstatus vc-arch-command file flags)) +(defun vc-arch-init-version () nil) + (provide 'vc-arch) ;;; arch-tag: a35c7c1c-5237-429d-88ef-3d718fd2e704