lisp/pcvs-info.el

   1 ;;; pcvs-info.el --- internal representation of a fileinfo entry
   2
   3 ;; Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000, 2004
   4 ;;           Free Software Foundation, Inc.
   5
   6 ;; Author: Stefan Monnier <monnier@cs.yale.edu>
   7 ;; Keywords: pcl-cvs
   8
   9 ;; This file is part of GNU Emacs.
  10
  11 ;; GNU Emacs is free software; you can redistribute it and/or modify
  12 ;; it under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation; either version 2, or (at your option)
  14 ;; any later version.
  15
  16 ;; GNU Emacs is distributed in the hope that it will be useful,
  17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ;; GNU General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  24 ;; Boston, MA 02111-1307, USA.
  25
  26 ;;; Commentary:
  27
  28 ;; The cvs-fileinfo data structure:
  29 ;;
  30 ;; When the `cvs update' is ready we parse the output.  Every file
  31 ;; that is affected in some way is added to the cookie collection as
  32 ;; a "fileinfo" (as defined below in cvs-create-fileinfo).
  33
  34 ;;; Code:
  35
  36 (eval-when-compile (require 'cl))
  37 (require 'pcvs-util)
  38 ;;(require 'pcvs-defs)
  39
  40 ;;;;
  41 ;;;; config variables
  42 ;;;;
  43
  44 (defcustom cvs-display-full-path t
  45   "*Specifies how the filenames should look like in the listing.
  46 If t, their full path name will be displayed, else only the filename."
  47   :group 'pcl-cvs
  48   :type '(boolean))
  49
  50 (defcustom cvs-allow-dir-commit nil
  51   "*Allow `cvs-mode-commit' on directories.
  52 If you commit without any marked file and with the cursor positioned
  53 on a directory entry, cvs would commit the whole directory.  This seems
  54 to confuse some users sometimes."
  55   :group 'pcl-cvs
  56   :type '(boolean))
  57
  58 ;;;;
  59 ;;;; Faces for fontification
  60 ;;;;
  61
  62 (defface cvs-header-face
  63   '((((class color) (background dark))
  64      (:foreground "lightyellow" :weight bold))
  65     (((class color) (background light))
  66      (:foreground "blue4" :weight bold))
  67     (t (:weight bold)))
  68   "PCL-CVS face used to highlight directory changes."
  69   :group 'pcl-cvs)
  70
  71 (defface cvs-filename-face
  72   '((((class color) (background dark))
  73      (:foreground "lightblue"))
  74     (((class color) (background light))
  75      (:foreground "blue4"))
  76     (t ()))
  77   "PCL-CVS face used to highlight file names."
  78   :group 'pcl-cvs)
  79
  80 (defface cvs-unknown-face
  81   '((((class color) (background dark))
  82      (:foreground "red"))
  83     (((class color) (background light))
  84      (:foreground "red"))
  85     (t (:slant italic)))
  86   "PCL-CVS face used to highlight unknown file status."
  87   :group 'pcl-cvs)
  88
  89 (defface cvs-handled-face
  90   '((((class color) (background dark))
  91      (:foreground "pink"))
  92     (((class color) (background light))
  93      (:foreground "pink"))
  94     (t ()))
  95   "PCL-CVS face used to highlight handled file status."
  96   :group 'pcl-cvs)
  97
  98 (defface cvs-need-action-face
  99   '((((class color) (background dark))
 100      (:foreground "orange"))
 101     (((class color) (background light))
 102      (:foreground "orange"))
 103     (t (:slant italic)))
 104   "PCL-CVS face used to highlight status of files needing action."
 105   :group 'pcl-cvs)
 106
 107 (defface cvs-marked-face
 108   '((((class color) (background dark))
 109      (:foreground "green" :weight bold))
 110     (((class color) (background light))
 111      (:foreground "green3" :weight bold))
 112     (t (:weight bold)))
 113   "PCL-CVS face used to highlight marked file indicator."
 114   :group 'pcl-cvs)
 115
 116 (defface cvs-msg-face
 117   '((t (:slant italic)))
 118   "PCL-CVS face used to highlight CVS messages."
 119   :group 'pcl-cvs)
 120
 121 (defvar cvs-fi-up-to-date-face 'cvs-handled-face)
 122 (defvar cvs-fi-unknown-face 'cvs-unknown-face)
 123 (defvar cvs-fi-conflict-face 'font-lock-warning-face)
 124
 125 ;; There is normally no need to alter the following variable, but if
 126 ;; your site has installed CVS in a non-standard way you might have
 127 ;; to change it.
 128
 129 (defvar cvs-bakprefix ".#"
 130   "The prefix that CVS prepends to files when rcsmerge'ing.")
 131
 132 (easy-mmode-defmap cvs-status-map
 133   '(([(mouse-2)] . cvs-mouse-toggle-mark))
 134   "Local keymap for text properties of status")
 135
 136 ;; Constructor:
 137
 138 (defstruct (cvs-fileinfo
 139             (:constructor nil)
 140             (:copier nil)
 141             (:constructor -cvs-create-fileinfo (type dir file full-log
 142                                                      &key marked subtype
 143                                                      merge
 144                                                      base-rev
 145                                                      head-rev))
 146             (:conc-name cvs-fileinfo->))
 147   marked        ;; t/nil.
 148   type          ;; See below
 149   subtype       ;; See below
 150   dir           ;; Relative directory the file resides in.
 151                 ;; (concat dir file) should give a valid path.
 152   file          ;; The file name sans the directory.
 153   base-rev      ;; During status: This is the revision that the
 154                 ;; working file is based on.
 155   head-rev      ;; During status: This is the highest revision in
 156                 ;; the repository.
 157   merge         ;; A cons cell containing the (ancestor . head) revisions
 158                 ;; of the merge that resulted in the current file.
 159   ;;removed     ;; t if the file no longer exists.
 160   full-log      ;; The output from cvs, unparsed.
 161   ;;mod-time    ;; Not used.
 162
 163   ;; In addition to the above, the following values can be extracted:
 164
 165   ;; handled    ;; t if this file doesn't require further action.
 166   ;; full-path  ;; The complete relative filename.
 167   ;; pp-name    ;; The printed file name
 168   ;; backup-file;; For MERGED and CONFLICT files after a \"cvs update\",
 169                 ;; this is a full path to the backup file where the
 170                 ;; untouched version resides.
 171
 172   ;; The meaning of the type field:
 173
 174   ;; Value            ---Used by---     Explanation
 175   ;;                  update status
 176   ;; NEED-UPDATE                x       file needs update
 177   ;; MODIFIED           x       x       modified by you, unchanged in repository
 178   ;;   MERGED           x       x       successful merge
 179   ;; ADDED              x       x       added by you, not yet committed
 180   ;; MISSING                    x       rm'd, but not yet `cvs remove'd
 181   ;; REMOVED            x       x       removed by you, not yet committed
 182   ;; NEED-MERGE                 x       need merge
 183   ;; CONFLICT           x               conflict when merging
 184   ;; ;;MOD-CONFLICT     x               removed locally, changed in repository.
 185   ;; DIRCHANGE          x       x       A change of directory.
 186   ;; UNKNOWN            x               An unknown file.
 187   ;; UP-TO-DATE                 x       The file is up-to-date.
 188   ;;   UPDATED          x       x       file copied from repository
 189   ;;   PATCHED          x       x       diff applied from repository
 190   ;;   COMMITTED                x       x       cvs commit'd
 191   ;; DEAD                               An entry that should be removed
 192   ;; MESSAGE            x       x       This is a special fileinfo that is used
 193   ;;                                      to display a text that should be in
 194   ;;                                      full-log."
 195   ;;   TEMP     A temporary message that should be removed
 196   )
 197 (defun cvs-create-fileinfo (type dir file msg &rest keys)
 198   (cvs-check-fileinfo (apply #'-cvs-create-fileinfo type dir file msg keys)))
 199
 200 ;; Fake selectors:
 201
 202 (defun cvs-fileinfo->full-path (fileinfo)
 203   "Return the full path for the file that is described in FILEINFO."
 204   (let ((dir (cvs-fileinfo->dir fileinfo)))
 205     (if (eq (cvs-fileinfo->type fileinfo) 'DIRCHANGE)
 206         (if (string= dir "") "." (directory-file-name dir))
 207       ;; Here, I use `concat' rather than `expand-file-name' because I want
 208       ;; the resulting path to stay relative if `dir' is relative.
 209       (concat dir (cvs-fileinfo->file fileinfo)))))
 210
 211 (defun cvs-fileinfo->pp-name (fi)
 212   "Return the filename of FI as it should be displayed."
 213   (if cvs-display-full-path
 214       (cvs-fileinfo->full-path fi)
 215     (cvs-fileinfo->file fi)))
 216
 217 (defun cvs-fileinfo->backup-file (fileinfo)
 218   "Construct the file name of the backup file for FILEINFO."
 219   (let* ((dir (cvs-fileinfo->dir fileinfo))
 220          (file (cvs-fileinfo->file fileinfo))
 221          (default-directory (file-name-as-directory (expand-file-name dir)))
 222          (files (directory-files "." nil
 223                                  (concat "\\`" (regexp-quote cvs-bakprefix)
 224                                          (regexp-quote file) "\\(\\.[0-9]+\\.[0-9]+\\)+\\'")))
 225          bf)
 226     (dolist (f files bf)
 227       (when (and (file-readable-p f)
 228                  (or (null bf) (file-newer-than-file-p f bf)))
 229         (setq bf (concat dir f))))))
 230
 231 ;; (defun cvs-fileinfo->handled (fileinfo)
 232 ;;   "Tell if this requires further action"
 233 ;;   (memq (cvs-fileinfo->type fileinfo) '(UP-TO-DATE DEAD)))
 234
 235 \f
 236 ;; Predicate:
 237
 238 (defun cvs-check-fileinfo (fi)
 239   "Check FI's conformance to some conventions."
 240   (let ((check 'none)
 241         (type (cvs-fileinfo->type fi))
 242         (subtype (cvs-fileinfo->subtype fi))
 243         (marked (cvs-fileinfo->marked fi))
 244         (dir (cvs-fileinfo->dir fi))
 245         (file (cvs-fileinfo->file fi))
 246         (base-rev (cvs-fileinfo->base-rev fi))
 247         (head-rev (cvs-fileinfo->head-rev fi))
 248         (full-log (cvs-fileinfo->full-log fi)))
 249     (if (and (setq check 'marked)       (memq marked '(t nil))
 250              (setq check 'base-rev)     (or (null base-rev) (stringp base-rev))
 251              (setq check 'head-rev)     (or (null head-rev) (stringp head-rev))
 252              (setq check 'full-log)     (stringp full-log)
 253              (setq check 'dir)
 254              (and (stringp dir)
 255                   (not (file-name-absolute-p dir))
 256                   (or (string= dir "")
 257                       (string= dir (file-name-as-directory dir))))
 258              (setq check 'file)
 259              (and (stringp file)
 260                   (string= file (file-name-nondirectory file)))
 261              (setq check 'type)         (symbolp type)
 262              (setq check 'consistency)
 263              (case type
 264                (DIRCHANGE (and (null subtype) (string= "." file)))
 265                ((NEED-UPDATE ADDED MISSING DEAD MODIFIED MESSAGE UP-TO-DATE
 266                              REMOVED NEED-MERGE CONFLICT UNKNOWN MESSAGE)
 267                 t)))
 268         fi
 269       (error "Invalid :%s in cvs-fileinfo %s" check fi))))
 270
 271 \f
 272 ;;;;
 273 ;;;; State table to indicate what you can do when.
 274 ;;;;
 275
 276 (defconst cvs-states
 277   `((NEED-UPDATE        update diff)
 278     (UP-TO-DATE         update nil remove diff safe-rm revert)
 279     (MODIFIED           update commit undo remove diff merge diff-base)
 280     (ADDED              update commit remove)
 281     (MISSING            remove undo update safe-rm revert)
 282     (REMOVED            commit add undo safe-rm)
 283     (NEED-MERGE         update undo diff diff-base)
 284     (CONFLICT           merge remove undo commit diff diff-base)
 285     (DIRCHANGE          remove update diff ,(if cvs-allow-dir-commit 'commit) tag)
 286     (UNKNOWN            ignore add remove)
 287     (DEAD               )
 288     (MESSAGE))
 289   "Fileinfo state descriptions for pcl-cvs.
 290 This is an assoc list.  Each element consists of (STATE . FUNS)
 291 - STATE (described in `cvs-create-fileinfo') is the key
 292 - FUNS is the list of applicable operations.
 293   The first one (if any) should be the \"default\" action.
 294 Most of the actions have the obvious meaning.
 295 `safe-rm' indicates that the file can be removed without losing
 296   any information.")
 297
 298 ;;;;
 299 ;;;; Utility functions
 300 ;;;;
 301
 302 (defun cvs-applicable-p (fi-or-type func)
 303   "Check if FUNC is applicable to FI-OR-TYPE.
 304 If FUNC is nil, always return t.
 305 FI-OR-TYPE can either be a symbol (a fileinfo-type) or a fileinfo."
 306   (let ((type (if (symbolp fi-or-type) fi-or-type
 307                 (cvs-fileinfo->type fi-or-type))))
 308     (and (not (eq type 'MESSAGE))
 309          (eq (car (memq func (cdr (assq type cvs-states)))) func))))
 310
 311 (defun cvs-add-face (str face &optional keymap &rest props)
 312   (when keymap
 313     (when (keymapp keymap)
 314       (setq props (list* 'keymap keymap props)))
 315     (setq props (list* 'mouse-face 'highlight props)))
 316   (add-text-properties 0 (length str) (list* 'font-lock-face face props) str)
 317   str)
 318
 319 (defun cvs-fileinfo-pp (fileinfo)
 320   "Pretty print FILEINFO.  Insert a printed representation in current buffer.
 321 For use by the cookie package."
 322   (cvs-check-fileinfo fileinfo)
 323   (let ((type (cvs-fileinfo->type fileinfo))
 324         (subtype (cvs-fileinfo->subtype fileinfo)))
 325     (insert
 326      (case type
 327        (DIRCHANGE (concat "In directory "
 328                           (cvs-add-face (cvs-fileinfo->full-path fileinfo)
 329                                         'cvs-header-face t
 330                                         'cvs-goal-column t)
 331                           ":"))
 332        (MESSAGE
 333         (cvs-add-face (format "Message: %s" (cvs-fileinfo->full-log fileinfo))
 334                       'cvs-msg-face))
 335        (t
 336         (let* ((status (if (cvs-fileinfo->marked fileinfo)
 337                            (cvs-add-face "*" 'cvs-marked-face)
 338                          " "))
 339                (file (cvs-add-face (cvs-fileinfo->pp-name fileinfo)
 340                                    'cvs-filename-face t
 341                                    'cvs-goal-column t))
 342                (base (or (cvs-fileinfo->base-rev fileinfo) ""))
 343                (head (cvs-fileinfo->head-rev fileinfo))
 344                (type
 345                 (let ((str (case type
 346                              ;;(MOD-CONFLICT "Not Removed")
 347                              (DEAD        "")
 348                              (t (capitalize (symbol-name type)))))
 349                       (face (let ((sym (intern
 350                                         (concat "cvs-fi-"
 351                                                 (downcase (symbol-name type))
 352                                                 "-face"))))
 353                               (or (and (boundp sym) (symbol-value sym))
 354                                   'cvs-need-action-face))))
 355                   (cvs-add-face str face cvs-status-map)))
 356                (side (or
 357                       ;; maybe a subtype
 358                       (when subtype (downcase (symbol-name subtype)))
 359                       ;; or the head-rev
 360                       (when (and head (not (string= head base))) head)
 361                       ;; or nothing
 362                       "")))
 363            (format "%-11s %s %-11s %-11s %s"
 364                    side status type base file)))))))
 365
 366
 367 (defun cvs-fileinfo-update (fi fi-new)
 368   "Update FI with the information provided in FI-NEW."
 369   (let ((type (cvs-fileinfo->type fi-new))
 370         (merge (cvs-fileinfo->merge fi-new)))
 371     (setf (cvs-fileinfo->type fi) type)
 372     (setf (cvs-fileinfo->subtype fi) (cvs-fileinfo->subtype fi-new))
 373     (setf (cvs-fileinfo->full-log fi) (cvs-fileinfo->full-log fi-new))
 374     (setf (cvs-fileinfo->base-rev fi) (cvs-fileinfo->base-rev fi-new))
 375     (setf (cvs-fileinfo->head-rev fi) (cvs-fileinfo->head-rev fi-new))
 376     (cond
 377      (merge (setf (cvs-fileinfo->merge fi) merge))
 378      ((memq type '(UP-TO-DATE NEED-UPDATE))
 379       (setf (cvs-fileinfo->merge fi) nil)))))
 380
 381 (defun cvs-fileinfo< (a b)
 382   "Compare fileinfo A with fileinfo B and return t if A is `less'.
 383 The ordering defined by this function is such that directories are
 384 sorted alphabetically, and inside every directory the DIRCHANGE
 385 fileinfo will appear first, followed by all files (alphabetically)."
 386   (let ((subtypea (cvs-fileinfo->subtype a))
 387         (subtypeb (cvs-fileinfo->subtype b)))
 388     (cond
 389      ;; Sort according to directories.
 390      ((string< (cvs-fileinfo->dir a) (cvs-fileinfo->dir b)) t)
 391      ((not (string= (cvs-fileinfo->dir a) (cvs-fileinfo->dir b))) nil)
 392
 393      ;; The DIRCHANGE entry is always first within the directory.
 394      ((eq (cvs-fileinfo->type b) 'DIRCHANGE) nil)
 395      ((eq (cvs-fileinfo->type a) 'DIRCHANGE) t)
 396
 397      ;; All files are sorted by file name.
 398      ((string< (cvs-fileinfo->file a) (cvs-fileinfo->file b))))))
 399
 400 ;;;
 401 ;;; Look at CVS/Entries to quickly find a first approximation of the status
 402 ;;;
 403
 404 (defun cvs-fileinfo-from-entries (dir &optional all)
 405   "List of fileinfos for DIR, extracted from CVS/Entries.
 406 Unless ALL is optional, returns only the files that are not up-to-date.
 407 DIR can also be a file."
 408   (let* ((singlefile
 409           (cond
 410            ((equal dir "") nil)
 411            ((file-directory-p dir) (setq dir (file-name-as-directory dir)) nil)
 412            (t (prog1 (file-name-nondirectory dir)
 413                 (setq dir (or (file-name-directory dir) ""))))))
 414          (file (expand-file-name "CVS/Entries" dir))
 415          (fis nil))
 416     (if (not (file-readable-p file))
 417         (push (cvs-create-fileinfo (if singlefile 'UNKNOWN 'DIRCHANGE)
 418                                    dir (or singlefile ".") "") fis)
 419       (with-temp-buffer
 420         (insert-file-contents file)
 421         (goto-char (point-min))
 422         ;; Select the single file entry in case we're only interested in a file.
 423         (cond
 424          ((not singlefile)
 425           (push (cvs-create-fileinfo 'DIRCHANGE dir "." "") fis))
 426          ((re-search-forward
 427            (concat "^[^/]*/" (regexp-quote singlefile) "/.*") nil t)
 428           (setq all t)
 429           (goto-char (match-beginning 0))
 430           (narrow-to-region (point) (match-end 0)))
 431          (t
 432           (push (cvs-create-fileinfo 'UNKNOWN dir singlefile "") fis)
 433           (narrow-to-region (point-min) (point-min))))
 434         (while (looking-at "\\([^/]*\\)/\\([^/]*\\)/\\([^/]*\\)/\\([^/]*\\)/")
 435           (if (/= (match-beginning 1) (match-end 1))
 436               (setq fis (append (cvs-fileinfo-from-entries
 437                                  (concat dir (file-name-as-directory
 438                                               (match-string 2)))
 439                                  all)
 440                                 fis))
 441             (let ((f (match-string 2))
 442                   (rev (match-string 3))
 443                   (date (match-string 4))
 444                   timestamp
 445                   (type 'MODIFIED)
 446                   (subtype nil))
 447               (cond
 448                ((equal (substring rev 0 1) "-")
 449                 (setq type 'REMOVED rev (substring rev 1)))
 450                ((not (file-exists-p (concat dir f))) (setq type 'MISSING))
 451                ((equal rev "0") (setq type 'ADDED rev nil))
 452                ((equal date "Result of merge") (setq subtype 'MERGED))
 453                ((let ((mtime (nth 5 (file-attributes (concat dir f))))
 454                       (system-time-locale "C"))
 455                   (setq timestamp (format-time-string "%c" mtime 'utc))
 456                   ;; Solaris sometimes uses "Wed Sep 05", not "Wed Sep  5".
 457                   ;; See "grep '[^a-z_]ctime' cvs/src/*.c" for reference.
 458                   (if (= (aref timestamp 8) ?0)
 459                       (setq timestamp (concat (substring timestamp 0 8)
 460                                               " " (substring timestamp 9))))
 461                   (equal timestamp date))
 462                 (setq type (if all 'UP-TO-DATE)))
 463                ((equal date (concat "Result of merge+" timestamp))
 464                 (setq type 'CONFLICT)))
 465               (when type
 466                 (push (cvs-create-fileinfo type dir f ""
 467                                            :base-rev rev :subtype subtype)
 468                       fis))))
 469           (forward-line 1))))
 470     fis))
 471
 472 (provide 'pcvs-info)
 473
 474 ;;; arch-tag: d85dde07-bdc2-400a-882f-92f398c7b0ba
 475 ;;; pcvs-info.el ends here