code.delx.au - gnu-emacs/blob - lisp/bookmark.el

   1 ;;; bookmark.el --- set bookmarks, maybe annotate them, jump to them later
   2
   3 ;; Copyright (C) 1993, 1994, 1995, 1996, 1997, 2001 Free Software Foundation
   4
   5 ;; Author: Karl Fogel <kfogel@red-bean.com>
   6 ;; Maintainer: Karl Fogel <kfogel@red-bean.com>
   7 ;; Created: July, 1993
   8 ;; Keywords: bookmarks, placeholders, annotations
   9
  10 ;; This file is part of GNU Emacs.
  11
  12 ;; GNU Emacs is free software; you can redistribute it and/or modify
  13 ;; it under the terms of the GNU General Public License as published by
  14 ;; the Free Software Foundation; either version 2, or (at your option)
  15 ;; any later version.
  16
  17 ;; GNU Emacs is distributed in the hope that it will be useful,
  18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 ;; GNU General Public License for more details.
  21
  22 ;; You should have received a copy of the GNU General Public License
  23 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  24 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  25 ;; Boston, MA 02111-1307, USA.
  26
  27 ;;; Commentary:
  28
  29 ;; This package is for setting "bookmarks" in files.  A bookmark
  30 ;; associates a string with a location in a certain file.  Thus, you
  31 ;; can navigate your way to that location by providing the string.
  32 ;; See the "User Variables" section for customizations.
  33
  34 ;; Thanks to David Bremner <bremner@cs.sfu.ca> for thinking of and
  35 ;; then implementing the bookmark-current-bookmark idea.  He even
  36 ;; sent *patches*, bless his soul...
  37
  38 ;; Thanks to Gregory M. Saunders <saunders@cis.ohio-state.edu> for
  39 ;; fixing and improving bookmark-time-to-save-p.
  40
  41 ;; Thanks go to Andrew V. Klein <avk@cig.mot.com> for the code that
  42 ;; sorts the alist before presenting it to the user (in bookmark-bmenu-list
  43 ;; and the menu-bar).
  44
  45 ;; And much thanks to David Hughes <djh@harston.cv.com> for many small
  46 ;; suggestions and the code to implement them (like
  47 ;; bookmark-bmenu-check-position, and some of the Lucid compatibility
  48 ;; stuff).
  49
  50 ;; Kudos (whatever they are) go to Jim Blandy <jimb@red-bean.com>
  51 ;; for his eminently sensible suggestion to separate bookmark-jump
  52 ;; into bookmark-jump and bookmark-jump-noselect, which made many
  53 ;; other things cleaner as well.
  54
  55 ;; Thanks to Roland McGrath for encouragement and help with defining
  56 ;; autoloads on the menu-bar.
  57
  58 ;; Jonathan Stigelman <stig@hackvan.com> gave patches for default
  59 ;; values in bookmark-jump and bookmark-set.  Everybody please keep
  60 ;; all the keystrokes they save thereby and send them to him at the
  61 ;; end of each year :-)  (No, seriously, thanks Jonathan!)
  62
  63 ;; Buckets of gratitude to John Grabowski <johng@media.mit.edu> for
  64 ;; thinking up the annotations feature and implementing it so well.
  65
  66 ;; Based on info-bookmark.el, by Karl Fogel and Ken Olstad
  67 ;; <olstad@msc.edu>.
  68
  69 ;; Thanks to Mikio Nakajima <PBC01764@niftyserve.or.jp> for many bugs
  70 ;; reported and fixed.
  71
  72 ;; Thank you, Michael Kifer, for contributing the XEmacs support.
  73
  74 ;; Enough with the credits already, get on to the good stuff:
  75
  76 ;; FAVORITE CHINESE RESTAURANT:
  77 ;; Boy, that's a tough one.  Probably Hong Min, or maybe Emperor's
  78 ;; Choice (both in Chicago's Chinatown).  Well, both.  How about you?
  79 \f
  80 ;;; Code:
  81
  82 (require 'pp)
  83
  84 ;;; Misc comments:
  85 ;;
  86 ;; If variable bookmark-use-annotations is non-nil, an annotation is
  87 ;; queried for when setting a bookmark.
  88 ;;
  89 ;; The bookmark list is sorted lexically by default, but you can turn
  90 ;; this off by setting bookmark-sort-flag to nil.  If it is nil, then
  91 ;; the list will be presented in the order it is recorded
  92 ;; (chronologically), which is actually fairly useful as well.
  93
  94 ;;; User Variables
  95
  96 (defgroup bookmark nil
  97   "Setting, annotation and jumping to bookmarks."
  98   :group 'matching)
  99
 100
 101 (defcustom bookmark-use-annotations nil
 102   "*If non-nil, saving a bookmark queries for an annotation in a buffer."
 103   :type 'boolean
 104   :group 'bookmark)
 105
 106
 107 (defcustom bookmark-save-flag t
 108   "*Controls when Emacs saves bookmarks to a file.
 109 --> nil means never save bookmarks, except when `bookmark-save' is
 110     explicitly called \(\\[bookmark-save]\).
 111 --> t means save bookmarks when Emacs is killed.
 112 --> Otherwise, it should be a number that is the frequency with which
 113     the bookmark list is saved \(i.e.: the number of times which
 114     Emacs' bookmark list may be modified before it is automatically
 115     saved.\).  If it is a number, Emacs will also automatically save
 116     bookmarks when it is killed.
 117
 118 Therefore, the way to get it to save every time you make or delete a
 119 bookmark is to set this variable to 1 \(or 0, which produces the same
 120 behavior.\)
 121
 122 To specify the file in which to save them, modify the variable
 123 `bookmark-default-file', which is `~/.emacs.bmk' by default."
 124   :type '(choice (const nil) integer (other t))
 125   :group 'bookmark)
 126
 127
 128 (defconst bookmark-old-default-file "~/.emacs-bkmrks"
 129   "*The `.emacs.bmk' file used to be called this name.")
 130
 131
 132 ;; defvarred to avoid a compilation warning:
 133 (defvar bookmark-file nil
 134   "Old name for `bookmark-default-file'.")
 135
 136 (defcustom bookmark-default-file
 137   (if bookmark-file
 138       ;; In case user set `bookmark-file' in her .emacs:
 139       bookmark-file
 140     (convert-standard-filename "~/.emacs.bmk"))
 141   "*File in which to save bookmarks by default."
 142   :type 'file
 143   :group 'bookmark)
 144
 145
 146 (defcustom bookmark-version-control 'nospecial
 147   "*Whether or not to make numbered backups of the bookmark file.
 148 It can have four values: t, nil, `never', and `nospecial'.
 149 The first three have the same meaning that they do for the
 150 variable `version-control', and the final value `nospecial' means just
 151 use the value of `version-control'."
 152   :type '(choice (const nil) (const never) (const nospecial)
 153                  (other t))
 154   :group 'bookmark)
 155
 156
 157 (defcustom bookmark-completion-ignore-case t
 158   "*Non-nil means bookmark functions ignore case in completion."
 159   :type 'boolean
 160   :group 'bookmark)
 161
 162
 163 (defcustom bookmark-sort-flag t
 164   "*Non-nil means that bookmarks will be displayed sorted by bookmark name.
 165 Otherwise they will be displayed in LIFO order (that is, most
 166 recently set ones come first, oldest ones come last)."
 167   :type 'boolean
 168   :group 'bookmark)
 169
 170
 171 (defcustom bookmark-automatically-show-annotations t
 172   "*Nil means don't show annotations when jumping to a bookmark."
 173   :type 'boolean
 174   :group 'bookmark)
 175
 176
 177 (defcustom bookmark-bmenu-file-column 30
 178   "*Column at which to display filenames in a buffer listing bookmarks.
 179 You can toggle whether files are shown with \\<bookmark-bmenu-mode-map>\\[bookmark-bmenu-toggle-filenames]."
 180   :type 'integer
 181   :group 'bookmark)
 182
 183
 184 (defcustom bookmark-bmenu-toggle-filenames t
 185   "*Non-nil means show filenames when listing bookmarks.
 186 This may result in truncated bookmark names.  To disable this, put the
 187 following in your `.emacs' file:
 188
 189 \(setq bookmark-bmenu-toggle-filenames nil\)"
 190   :type 'boolean
 191   :group 'bookmark)
 192
 193
 194 (defcustom bookmark-menu-length 70
 195   "*Maximum length of a bookmark name displayed on a popup menu."
 196   :type 'integer
 197   :group 'boolean)
 198
 199
 200 ;;; No user-serviceable parts beyond this point.
 201
 202 ;; Is it XEmacs?
 203 (defconst bookmark-xemacsp
 204   (string-match "\\(Lucid\\|Xemacs\\)" emacs-version))
 205
 206
 207 ;; Added  for lucid emacs  compatibility, db
 208 (or (fboundp 'defalias)  (fset 'defalias 'fset))
 209
 210 ;; suggested for lucid compatibility by david hughes:
 211 (or (fboundp 'frame-height)  (defalias 'frame-height 'screen-height))
 212
 213 ;; This variable is probably obsolete now...
 214 (or (boundp 'baud-rate)
 215     ;; some random value higher than 9600
 216     (setq baud-rate 19200))
 217
 218
 219 \f
 220 ;;; Keymap stuff:
 221
 222 ;; Set up these bindings dumping time *only*;
 223 ;; if the user alters them, don't override the user when loading bookmark.el.
 224
 225 ;;;###autoload (define-key ctl-x-map "rb" 'bookmark-jump)
 226 ;;;###autoload (define-key ctl-x-map "rm" 'bookmark-set)
 227 ;;;###autoload (define-key ctl-x-map "rl" 'bookmark-bmenu-list)
 228
 229 ;;;###autoload
 230 (defvar bookmark-map nil
 231   "Keymap containing bindings to bookmark functions.
 232 It is not bound to any key by default: to bind it
 233 so that you have a bookmark prefix, just use `global-set-key' and bind a
 234 key of your choice to `bookmark-map'.  All interactive bookmark
 235 functions have a binding in this keymap.")
 236
 237 ;;;###autoload
 238 (define-prefix-command 'bookmark-map)
 239
 240 ;; Read the help on all of these functions for details...
 241 ;;;###autoload
 242 (define-key bookmark-map "x" 'bookmark-set)
 243 ;;;###autoload
 244 (define-key bookmark-map "m" 'bookmark-set) ; "m" for "mark"
 245 ;;;###autoload
 246 (define-key bookmark-map "j" 'bookmark-jump)
 247 ;;;###autoload
 248 (define-key bookmark-map "g" 'bookmark-jump) ; "g" for "go"
 249 ;;;###autoload
 250 (define-key bookmark-map "i" 'bookmark-insert)
 251 ;;;###autoload
 252 (define-key bookmark-map "e" 'edit-bookmarks)
 253 ;;;###autoload
 254 (define-key bookmark-map "f" 'bookmark-insert-location) ; "f" for "find"
 255 ;;;###autoload
 256 (define-key bookmark-map "r" 'bookmark-rename)
 257 ;;;###autoload
 258 (define-key bookmark-map "d" 'bookmark-delete)
 259 ;;;###autoload
 260 (define-key bookmark-map "l" 'bookmark-load)
 261 ;;;###autoload
 262 (define-key bookmark-map "w" 'bookmark-write)
 263 ;;;###autoload
 264 (define-key bookmark-map "s" 'bookmark-save)
 265
 266
 267 ;;; The annotation maps.
 268 (defvar bookmark-read-annotation-mode-map (copy-keymap text-mode-map)
 269   "Keymap for composing an annotation for a bookmark.")
 270
 271 (define-key bookmark-read-annotation-mode-map "\C-c\C-c"
 272   'bookmark-send-annotation)
 273
 274
 275 \f
 276 ;;; Core variables and data structures:
 277 (defvar bookmark-alist ()
 278   "Association list of bookmarks and their records.
 279 You probably don't want to change the value of this alist yourself;
 280 instead, let the various bookmark functions do it for you.
 281
 282 The format of the alist is
 283
 284        \(BOOKMARK1 BOOKMARK2 ...\)
 285
 286 where each BOOKMARK is of the form
 287
 288 \(NAME
 289   \(filename . FILE\)
 290   \(front-context-string . FRONT-STR\)
 291   \(rear-context-string  . REAR-STR\)
 292   \(position . POS\)
 293   \(info-node . POS\)
 294   \(annotation . ANNOTATION\)\)
 295
 296 So the cdr of each bookmark is an alist too.
 297 `info-node' is optional, by the way.")
 298
 299
 300 (defvar bookmarks-already-loaded nil)
 301
 302
 303 ;; more stuff added by db.
 304
 305 (defvar bookmark-current-bookmark nil
 306   "Name of bookmark most recently used in the current file.
 307 It is buffer local, used to make moving a bookmark forward
 308 through a file easier.")
 309
 310 (make-variable-buffer-local 'bookmark-current-bookmark)
 311
 312
 313 (defvar bookmark-alist-modification-count 0
 314   "Number of modifications to bookmark list since it was last saved.")
 315
 316
 317 (defvar bookmark-search-size 16
 318   "Length of the context strings recorded on either side of a bookmark.")
 319
 320
 321 (defvar bookmark-current-point 0)
 322 (defvar bookmark-yank-point 0)
 323 (defvar bookmark-current-buffer nil)
 324
 325
 326 \f
 327 ;; Helper functions.
 328
 329 ;; Only functions on this page and the next one (file formats) need to
 330 ;; know anything about the format of bookmark-alist entries.
 331 ;; Everyone else should go through them.
 332
 333 (defun bookmark-name-from-full-record (full-record)
 334   "Return name of FULL-RECORD \(an alist element instead of a string\)."
 335   (car full-record))
 336
 337
 338 (defun bookmark-all-names ()
 339   "Return a list of all current bookmark names."
 340   (bookmark-maybe-load-default-file)
 341   (mapcar
 342    (lambda (full-record)
 343      (bookmark-name-from-full-record full-record))
 344    bookmark-alist))
 345
 346
 347 (defun bookmark-get-bookmark (bookmark)
 348   "Return the full entry for BOOKMARK in bookmark-alist.
 349 If BOOKMARK is not a string, return nil."
 350   (when (stringp bookmark)
 351     (apply (if bookmark-completion-ignore-case
 352                #'assoc-ignore-case
 353              #'assoc)
 354            (list bookmark bookmark-alist))))
 355
 356
 357 (defun bookmark-get-bookmark-record (bookmark)
 358   "Return the guts of the entry for BOOKMARK in bookmark-alist.
 359 That is, all information but the name."
 360   (car (cdr (bookmark-get-bookmark bookmark))))
 361
 362
 363 (defun bookmark-set-name (bookmark newname)
 364   "Set BOOKMARK's name to NEWNAME."
 365   (setcar
 366    (if (stringp bookmark) (bookmark-get-bookmark bookmark) bookmark)
 367    newname))
 368
 369
 370 (defun bookmark-get-annotation (bookmark)
 371   "Return the annotation of BOOKMARK, or nil if none."
 372   (cdr (assq 'annotation (bookmark-get-bookmark-record bookmark))))
 373
 374
 375 (defun bookmark-set-annotation (bookmark ann)
 376   "Set the annotation of BOOKMARK to ANN."
 377   (let ((cell (assq 'annotation (bookmark-get-bookmark-record bookmark))))
 378     (if cell
 379         (setcdr cell ann)
 380       (nconc (bookmark-get-bookmark-record bookmark)
 381              (list (cons 'annotation ann))))))
 382
 383
 384 (defun bookmark-get-filename (bookmark)
 385   "Return the full filename of BOOKMARK."
 386   (cdr (assq 'filename (bookmark-get-bookmark-record bookmark))))
 387
 388
 389 (defun bookmark-set-filename (bookmark filename)
 390   "Set the full filename of BOOKMARK to FILENAME."
 391   (let ((cell (assq 'filename (bookmark-get-bookmark-record bookmark))))
 392     (if cell
 393         (setcdr cell filename)
 394       (nconc (bookmark-get-bookmark-record bookmark)
 395              (list (cons 'filename filename))))))
 396
 397
 398 (defun bookmark-get-position (bookmark)
 399   "Return the position \(i.e.: point\) of BOOKMARK."
 400   (cdr (assq 'position (bookmark-get-bookmark-record bookmark))))
 401
 402
 403 (defun bookmark-set-position (bookmark position)
 404   "Set the position \(i.e.: point\) of BOOKMARK to POSITION."
 405   (let ((cell (assq 'position (bookmark-get-bookmark-record bookmark))))
 406     (if cell
 407         (setcdr cell position)
 408       (nconc (bookmark-get-bookmark-record bookmark)
 409              (list (cons 'position position))))))
 410
 411
 412 (defun bookmark-get-front-context-string (bookmark)
 413   "Return the front-context-string of BOOKMARK."
 414   (cdr (assq 'front-context-string (bookmark-get-bookmark-record bookmark))))
 415
 416
 417 (defun bookmark-set-front-context-string (bookmark string)
 418   "Set the front-context-string of BOOKMARK to STRING."
 419   (let ((cell (assq 'front-context-string
 420                     (bookmark-get-bookmark-record bookmark))))
 421     (if cell
 422         (setcdr cell string)
 423       (nconc (bookmark-get-bookmark-record bookmark)
 424              (list (cons 'front-context-string string))))))
 425
 426
 427 (defun bookmark-get-rear-context-string (bookmark)
 428   "Return the rear-context-string of BOOKMARK."
 429   (cdr (assq 'rear-context-string (bookmark-get-bookmark-record bookmark))))
 430
 431
 432 (defun bookmark-set-rear-context-string (bookmark string)
 433   "Set the rear-context-string of BOOKMARK to STRING."
 434   (let ((cell (assq 'rear-context-string
 435                     (bookmark-get-bookmark-record bookmark))))
 436     (if cell
 437         (setcdr cell string)
 438       (nconc (bookmark-get-bookmark-record bookmark)
 439              (list (cons 'rear-context-string string))))))
 440
 441
 442 (defun bookmark-get-info-node (bookmark)
 443   "Get the info node associated with BOOKMARK."
 444   (cdr (assq 'info-node (bookmark-get-bookmark-record bookmark))))
 445
 446
 447 (defun bookmark-set-info-node (bookmark node)
 448   "Set the Info node of BOOKMARK to NODE."
 449   (let ((cell (assq 'info-node
 450                     (bookmark-get-bookmark-record bookmark))))
 451     (if cell
 452         (setcdr cell node)
 453       (nconc (bookmark-get-bookmark-record bookmark)
 454              (list (cons 'info-node node)))))
 455
 456   (message "%S" (assq 'info-node (bookmark-get-bookmark-record bookmark)))
 457   (sit-for 4)
 458   )
 459
 460
 461 (defvar bookmark-history nil
 462   "The history list for bookmark functions.")
 463
 464
 465 (defun bookmark-completing-read (prompt &optional default)
 466   "Prompting with PROMPT, read a bookmark name in completion.
 467 PROMPT will get a \": \" stuck on the end no matter what, so you
 468 probably don't want to include one yourself.
 469 Optional second arg DEFAULT is a string to return if the user enters
 470 the empty string."
 471   (bookmark-maybe-load-default-file) ; paranoia
 472   (let* ((completion-ignore-case bookmark-completion-ignore-case)
 473          (default default)
 474          (prompt (if default
 475                      (concat prompt (format " (%s): " default))
 476                    (concat prompt ": ")))
 477          (str
 478           (completing-read prompt
 479                            bookmark-alist
 480                            nil
 481                            0
 482                            nil
 483                            'bookmark-history)))
 484     (if (string-equal "" str)
 485         (list default)
 486       (list str))))
 487
 488
 489 (defmacro bookmark-maybe-historicize-string (string)
 490   "Put STRING into the bookmark prompt history, if caller non-interactive.
 491 We need this because sometimes bookmark functions are invoked from
 492 menus, so `completing-read' never gets a chance to set `bookmark-history'."
 493   `(or
 494     (interactive-p)
 495     (setq bookmark-history (cons ,string bookmark-history))))
 496
 497
 498 (defun bookmark-make (name &optional annotation overwrite info-node)
 499   "Make a bookmark named NAME.
 500 Optional second arg ANNOTATION gives it an annotation.
 501 Optional third arg OVERWRITE means replace any existing bookmarks with
 502 this name.
 503 Optional fourth arg INFO-NODE means this bookmark is at info node
 504 INFO-NODE, so record this fact in the bookmark's entry."
 505   (bookmark-maybe-load-default-file)
 506   (let ((stripped-name (copy-sequence name)))
 507     (or bookmark-xemacsp
 508         ;; XEmacs's `set-text-properties' doesn't work on
 509         ;; free-standing strings, apparently.
 510         (set-text-properties 0 (length stripped-name) nil stripped-name))
 511     (if (and (bookmark-get-bookmark stripped-name) (not overwrite))
 512         ;; already existing bookmark under that name and
 513         ;; no prefix arg means just overwrite old bookmark
 514         (setcdr (bookmark-get-bookmark stripped-name)
 515                 (list (bookmark-make-cell annotation info-node)))
 516
 517       ;; otherwise just cons it onto the front (either the bookmark
 518       ;; doesn't exist already, or there is no prefix arg.  In either
 519       ;; case, we want the new bookmark consed onto the alist...)
 520
 521       (setq bookmark-alist
 522             (cons
 523              (list stripped-name
 524                    (bookmark-make-cell annotation info-node))
 525              bookmark-alist)))
 526
 527     ;; Added by db
 528     (setq bookmark-current-bookmark stripped-name)
 529     (setq bookmark-alist-modification-count
 530           (1+ bookmark-alist-modification-count))
 531     (if (bookmark-time-to-save-p)
 532         (bookmark-save))))
 533
 534
 535 (defun bookmark-make-cell (annotation &optional info-node)
 536   "Return the record part of a new bookmark, given ANNOTATION.
 537 Must be at the correct position in the buffer in which the bookmark is
 538 being set.  This might change someday.
 539 Optional second arg INFO-NODE means this bookmark is at info node
 540 INFO-NODE, so record this fact in the bookmark's entry."
 541   (let ((the-record
 542          (` ((filename . (, (bookmark-buffer-file-name)))
 543              (front-context-string
 544               . (, (if (>= (- (point-max) (point)) bookmark-search-size)
 545                        (buffer-substring-no-properties
 546                         (point)
 547                         (+ (point) bookmark-search-size))
 548                      nil)))
 549              (rear-context-string
 550               . (, (if (>= (- (point) (point-min)) bookmark-search-size)
 551                        (buffer-substring-no-properties
 552                         (point)
 553                         (- (point) bookmark-search-size))
 554                      nil)))
 555              (position . (, (point)))
 556              ))))
 557
 558     ;; Now fill in the optional parts:
 559
 560     ;; Take no chances with text properties
 561     (set-text-properties 0 (length annotation) nil annotation)
 562     (set-text-properties 0 (length info-node) nil info-node)
 563
 564     (if annotation
 565         (nconc the-record (list (cons 'annotation annotation))))
 566     (if info-node
 567         (nconc the-record (list (cons 'info-node info-node))))
 568
 569     ;; Finally, return the completed record.
 570     the-record))
 571
 572
 573 \f
 574 ;;; File format stuff
 575
 576 ;; The OLD format of the bookmark-alist was:
 577 ;;
 578 ;;       ((bookmark-name (filename
 579 ;;                        string-in-front
 580 ;;                        string-behind
 581 ;;                        point))
 582 ;;        ...)
 583 ;;
 584 ;; The NEW format of the bookmark-alist is:
 585 ;;
 586 ;;       ((bookmark-name ((filename . FILENAME)
 587 ;;                        (front-context-string . string-in-front)
 588 ;;                        (rear-context-string  . string-behind)
 589 ;;                        (position . POINT)
 590 ;;                        (annotation . annotation)
 591 ;;                        (whatever   . VALUE)
 592 ;;                        ...
 593 ;;                        ))
 594 ;;        ...)
 595 ;;
 596 ;;
 597 ;; I switched to using an internal as well as external alist because I
 598 ;; felt that would be a more flexible framework in which to add
 599 ;; features.  It means that the order in which values appear doesn't
 600 ;; matter, and it means that arbitrary values can be added without
 601 ;; risk of interfering with existing ones.
 602 ;;
 603 ;; BOOKMARK-NAME is the string the user gives the bookmark and
 604 ;; accesses it by from then on.
 605 ;;
 606 ;; FILENAME is the location of the file in which the bookmark is set.
 607 ;;
 608 ;; STRING-IN-FRONT is a string of `bookmark-search-size' chars of
 609 ;; context in front of the point at which the bookmark is set.
 610 ;;
 611 ;; STRING-BEHIND is the same thing, but after the point.
 612 ;;
 613 ;; The context strings exist so that modifications to a file don't
 614 ;; necessarily cause a bookmark's position to be invalidated.
 615 ;; bookmark-jump will search for STRING-BEHIND and STRING-IN-FRONT in
 616 ;; case the file has changed since the bookmark was set.  It will
 617 ;; attempt to place the user before the changes, if there were any.
 618 ;; ANNOTATION is the annotation for the bookmark; it may not exist
 619 ;; (for backward compatibility), be nil (no annotation), or be a
 620 ;; string.
 621
 622
 623 (defconst bookmark-file-format-version 1
 624   "The current version of the format used by bookmark files.
 625 You should never need to change this.")
 626
 627
 628 (defconst bookmark-end-of-version-stamp-marker
 629   "-*- End Of Bookmark File Format Version Stamp -*-\n"
 630   "This string marks the end of the version stamp in a bookmark file.")
 631
 632
 633 (defun bookmark-alist-from-buffer ()
 634   "Return a bookmark-alist (in any format) from the current buffer.
 635 The buffer must of course contain bookmark format information.
 636 Does not care from where in the buffer it is called, and does not
 637 affect point."
 638   (save-excursion
 639     (goto-char (point-min))
 640     (if (search-forward bookmark-end-of-version-stamp-marker nil t)
 641         (read (current-buffer))
 642       ;; Else we're dealing with format version 0
 643       (if (search-forward "(" nil t)
 644           (progn
 645             (forward-char -1)
 646             (read (current-buffer)))
 647         ;; Else no hope of getting information here.
 648         (error "Not bookmark format")))))
 649
 650
 651 (defun bookmark-upgrade-version-0-alist (old-list)
 652   "Upgrade a version 0 alist OLD-LIST to the current version."
 653   (mapcar
 654    (lambda (bookmark)
 655      (let* ((name      (car bookmark))
 656             (record    (car (cdr bookmark)))
 657             (filename  (nth 0 record))
 658             (front-str (nth 1 record))
 659             (rear-str  (nth 2 record))
 660             (position  (nth 3 record))
 661             (ann       (nth 4 record)))
 662        (list
 663         name
 664         (` ((filename             .    (, filename))
 665             (front-context-string .    (, (or front-str "")))
 666             (rear-context-string  .    (, (or rear-str  "")))
 667             (position             .    (, position))
 668             (annotation           .    (, ann)))))))
 669    old-list))
 670
 671
 672 (defun bookmark-upgrade-file-format-from-0 ()
 673   "Upgrade a bookmark file of format 0 (the original format) to format 1.
 674 This expects to be called from point-min in a bookmark file."
 675   (message "Upgrading bookmark format from 0 to %d..."
 676            bookmark-file-format-version)
 677   (let* ((old-list (bookmark-alist-from-buffer))
 678          (new-list (bookmark-upgrade-version-0-alist old-list)))
 679     (delete-region (point-min) (point-max))
 680     (bookmark-insert-file-format-version-stamp)
 681     (pp new-list (current-buffer))
 682     (save-buffer))
 683   (goto-char (point-min))
 684   (message "Upgrading bookmark format from 0 to %d...done"
 685            bookmark-file-format-version)
 686   )
 687
 688
 689 (defun bookmark-grok-file-format-version ()
 690   "Return an integer which is the file-format version of this bookmark file.
 691 This expects to be called from point-min in a bookmark file."
 692   (if (looking-at "^;;;;")
 693       (save-excursion
 694         (save-match-data
 695           (re-search-forward "[0-9]")
 696           (forward-char -1)
 697           (read (current-buffer))))
 698     ;; Else this is format version 0, the original one, which didn't
 699     ;; even have version stamps.
 700     0))
 701
 702
 703 (defun bookmark-maybe-upgrade-file-format ()
 704   "Check the file-format version of this bookmark file.
 705 If the version is not up-to-date, upgrade it automatically.
 706 This expects to be called from point-min in a bookmark file."
 707   (let ((version (bookmark-grok-file-format-version)))
 708     (cond
 709      ((= version bookmark-file-format-version)
 710       ) ; home free -- version is current
 711      ((= version 0)
 712       (bookmark-upgrade-file-format-from-0))
 713      (t
 714       (error "Bookmark file format version strangeness")))))
 715
 716
 717 (defun bookmark-insert-file-format-version-stamp ()
 718   "Insert text indicating current version of bookmark file format."
 719   (insert
 720    (format ";;;; Emacs Bookmark Format Version %d ;;;;\n"
 721            bookmark-file-format-version))
 722   (insert ";;; This format is meant to be slightly human-readable;\n"
 723           ";;; nevertheless, you probably don't want to edit it.\n"
 724           ";;; "
 725           bookmark-end-of-version-stamp-marker))
 726
 727
 728 ;;; end file-format stuff
 729
 730 \f
 731 ;;; Core code:
 732
 733 ;;;###autoload
 734 (defun bookmark-set (&optional name parg)
 735   "Set a bookmark named NAME inside a file.
 736 If name is nil, then the user will be prompted.
 737 With prefix arg, will not overwrite a bookmark that has the same name
 738 as NAME if such a bookmark already exists, but instead will \"push\"
 739 the new bookmark onto the bookmark alist.  Thus the most recently set
 740 bookmark with name NAME would be the one in effect at any given time,
 741 but the others are still there, should you decide to delete the most
 742 recent one.
 743
 744 To yank words from the text of the buffer and use them as part of the
 745 bookmark name, type C-w while setting a bookmark.  Successive C-w's
 746 yank successive words.
 747
 748 Typing C-u inserts the name of the last bookmark used in the buffer
 749 \(as an aid in using a single bookmark name to track your progress
 750 through a large file\).  If no bookmark was used, then C-u inserts the
 751 name of the file being visited.
 752
 753 Use \\[bookmark-delete] to remove bookmarks \(you give it a name,
 754 and it removes only the first instance of a bookmark with that name from
 755 the list of bookmarks.\)"
 756   (interactive (list nil current-prefix-arg))
 757   (or
 758    (bookmark-buffer-file-name)
 759    (error "Buffer not visiting a file or directory"))
 760
 761   (bookmark-maybe-load-default-file)
 762
 763   (setq bookmark-current-point (point))
 764   (setq bookmark-yank-point (point))
 765   (setq bookmark-current-buffer (current-buffer))
 766
 767   (let* ((default (or bookmark-current-bookmark
 768                       (bookmark-buffer-name)))
 769          (str
 770           (or name
 771               (read-from-minibuffer
 772                (format "Set bookmark (%s): " default)
 773                nil
 774                (let ((now-map (copy-keymap minibuffer-local-map)))
 775                  (define-key now-map "\C-w" 'bookmark-yank-word)
 776                  (define-key now-map "\C-u" 'bookmark-insert-current-bookmark)
 777                  now-map))))
 778          (annotation nil))
 779     (and (string-equal str "") (setq str default))
 780     ;; Ask for an annotation buffer for this bookmark
 781     (if bookmark-use-annotations
 782         (bookmark-read-annotation parg str)
 783       (bookmark-make str annotation parg (bookmark-info-current-node))
 784       (setq bookmark-current-bookmark str)
 785       (bookmark-bmenu-surreptitiously-rebuild-list)
 786       (goto-char bookmark-current-point))))
 787
 788
 789 (defun bookmark-info-current-node ()
 790   "If in Info-mode, return current node name (a string), else nil."
 791   (if (eq major-mode 'Info-mode)
 792       Info-current-node))
 793
 794
 795 (defun bookmark-kill-line (&optional newline-too)
 796   "Kill from point to end of line.
 797 If optional arg NEWLINE-TOO is non-nil, delete the newline too.
 798 Does not affect the kill-ring."
 799   (let ((eol (save-excursion (end-of-line) (point))))
 800     (delete-region (point) eol)
 801     (if (and newline-too (looking-at "\n"))
 802         (delete-char 1))))
 803
 804
 805 ;; Defvars to avoid compilation warnings:
 806 (defvar bookmark-annotation-paragraph nil)
 807 (defvar bookmark-annotation-name nil)
 808 (defvar bookmark-annotation-buffer nil)
 809 (defvar bookmark-annotation-file nil)
 810 (defvar bookmark-annotation-point nil)
 811
 812
 813 (defun bookmark-send-annotation ()
 814   "Use buffer contents as the annotation for a bookmark.
 815 Exclude lines that begin with `#'.
 816 Store the annotation text in the bookmark list with
 817 the bookmark (and file, and point) specified in buffer local variables."
 818   (interactive)
 819   (if (not (eq major-mode 'bookmark-read-annotation-mode))
 820       (error "Not in bookmark-read-annotation-mode"))
 821   (goto-char (point-min))
 822   (while (< (point) (point-max))
 823     (if (looking-at "^#")
 824         (bookmark-kill-line t)
 825       (forward-line 1)))
 826   (let ((annotation (buffer-string))
 827         (parg bookmark-annotation-paragraph)
 828         (bookmark bookmark-annotation-name)
 829         (pt bookmark-annotation-point)
 830         (buf bookmark-annotation-buffer))
 831     ;; for bookmark-make-cell to work, we need to be
 832     ;; in the relevant buffer, at the relevant point.
 833     ;; Actually, bookmark-make-cell should probably be re-written,
 834     ;; to avoid this need.  Should I handle the error if a buffer is
 835     ;; killed between "C-x r m" and a "C-c C-c" in the annotation buffer?
 836     (save-excursion
 837       (pop-to-buffer buf)
 838       (goto-char pt)
 839       (bookmark-make bookmark annotation parg (bookmark-info-current-node))
 840       (setq bookmark-current-bookmark bookmark))
 841     (bookmark-bmenu-surreptitiously-rebuild-list)
 842     (goto-char bookmark-current-point))
 843   (kill-buffer (current-buffer)))
 844
 845
 846 (defun bookmark-default-annotation-text (bookmark)
 847   (concat "#  Type the annotation for bookmark '" bookmark "' here.\n"
 848           "#  All lines which start with a '#' will be deleted.\n"
 849           "#  Type C-c C-c when done.\n#\n"
 850           "#  Author: " (user-full-name) " <" (user-login-name) "@"
 851           (system-name) ">\n"
 852           "#  Date:    " (current-time-string) "\n"))
 853
 854
 855 (defvar bookmark-read-annotation-text-func 'bookmark-default-annotation-text
 856   "Function to return default text to use for a bookmark annotation.
 857 It takes the name of the bookmark, as a string, as an arg.")
 858
 859 (defun bookmark-read-annotation-mode (buf point parg bookmark)
 860   "Mode for composing annotations for a bookmark.
 861 Wants BUF POINT PARG and BOOKMARK.
 862 When you have finished composing, type \\[bookmark-send-annotation] to send
 863 the annotation.
 864
 865 \\{bookmark-read-annotation-mode-map}
 866 "
 867   (interactive)
 868   (kill-all-local-variables)
 869   (make-local-variable 'bookmark-annotation-paragraph)
 870   (make-local-variable 'bookmark-annotation-name)
 871   (make-local-variable 'bookmark-annotation-buffer)
 872   (make-local-variable 'bookmark-annotation-file)
 873   (make-local-variable 'bookmark-annotation-point)
 874   (setq bookmark-annotation-paragraph parg)
 875   (setq bookmark-annotation-name bookmark)
 876   (setq bookmark-annotation-buffer buf)
 877   (setq bookmark-annotation-file (buffer-file-name buf))
 878   (setq bookmark-annotation-point point)
 879   (use-local-map bookmark-read-annotation-mode-map)
 880   (setq major-mode 'bookmark-read-annotation-mode)
 881   (insert (funcall bookmark-read-annotation-text-func bookmark))
 882   (run-hooks 'text-mode-hook))
 883
 884
 885 (defun bookmark-read-annotation (parg bookmark)
 886   "Pop up a buffer for entering a bookmark annotation.
 887 Text surrounding the bookmark is PARG; the bookmark name is BOOKMARK."
 888   (let ((buf (current-buffer))
 889         (point (point)))
 890     (pop-to-buffer (generate-new-buffer-name "*Bookmark Annotation Compose*"))
 891     (bookmark-read-annotation-mode buf point parg bookmark)))
 892
 893
 894 (defvar bookmark-edit-annotation-mode-map (copy-keymap text-mode-map)
 895   "Keymap for editing an annotation of a bookmark.")
 896
 897
 898 (define-key bookmark-edit-annotation-mode-map "\C-c\C-c"
 899   'bookmark-send-edited-annotation)
 900
 901
 902 (defun bookmark-edit-annotation-mode (bookmark)
 903   "Mode for editing the annotation of bookmark BOOKMARK.
 904 When you have finished composing, type \\[bookmark-send-annotation].
 905
 906 \\{bookmark-edit-annotation-mode-map}
 907 "
 908   (interactive)
 909   (kill-all-local-variables)
 910   (make-local-variable 'bookmark-annotation-name)
 911   (setq bookmark-annotation-name bookmark)
 912   (use-local-map bookmark-edit-annotation-mode-map)
 913   (setq major-mode 'bookmark-edit-annotation-mode)
 914   (insert (funcall bookmark-read-annotation-text-func bookmark))
 915   (let ((annotation (bookmark-get-annotation bookmark)))
 916     (if (and annotation (not (string-equal annotation "")))
 917         (insert annotation)))
 918   (run-hooks 'text-mode-hook))
 919
 920
 921 (defun bookmark-send-edited-annotation ()
 922   "Use buffer contents (minus beginning with `#' as annotation for a bookmark."
 923   (interactive)
 924   (if (not (eq major-mode 'bookmark-edit-annotation-mode))
 925       (error "Not in bookmark-edit-annotation-mode"))
 926   (goto-char (point-min))
 927   (while (< (point) (point-max))
 928     (if (looking-at "^#")
 929         (bookmark-kill-line t)
 930       (forward-line 1)))
 931   (let ((annotation (buffer-string))
 932         (bookmark bookmark-annotation-name))
 933     (bookmark-set-annotation bookmark annotation)
 934     (bookmark-bmenu-surreptitiously-rebuild-list)
 935     (goto-char bookmark-current-point))
 936   (kill-buffer (current-buffer)))
 937
 938
 939 (defun bookmark-edit-annotation (bookmark)
 940   "Pop up a buffer for editing bookmark BOOKMARK's annotation."
 941   (let ((buf (current-buffer))
 942         (point (point)))
 943     (pop-to-buffer (generate-new-buffer-name "*Bookmark Annotation Compose*"))
 944     (bookmark-edit-annotation-mode bookmark)))
 945
 946
 947 (defun bookmark-insert-current-bookmark ()
 948   "Insert this buffer's value of bookmark-current-bookmark.
 949 Default to file name if it's nil."
 950   (interactive)
 951   (let ((str
 952          (save-excursion
 953            (set-buffer bookmark-current-buffer)
 954            bookmark-current-bookmark)))
 955     (if str (insert str) (bookmark-insert-buffer-name))))
 956
 957
 958 (defun bookmark-insert-buffer-name ()
 959   "Insert the current file name into the bookmark name being set.
 960 The directory part of the file name is not used."
 961   (interactive)
 962   (let ((str
 963          (save-excursion
 964            (set-buffer bookmark-current-buffer)
 965            (bookmark-buffer-name))))
 966     (insert str)))
 967
 968
 969 (defun bookmark-buffer-name ()
 970   "Return the name of the current buffer's file, non-directory.
 971 In Info, return the current node."
 972   (cond
 973    ;; Are we in Info?
 974    ((string-equal mode-name "Info") Info-current-node)
 975    ;; Or are we a file?
 976    (buffer-file-name (file-name-nondirectory buffer-file-name))
 977    ;; Or are we a directory?
 978    ((and (boundp 'dired-directory) dired-directory)
 979     (let* ((dirname (if (stringp dired-directory)
 980                         dired-directory
 981                       (car dired-directory)))
 982            (idx (1- (length dirname))))
 983       ;; Strip the trailing slash.
 984       (if (= ?/ (aref dirname idx))
 985           (file-name-nondirectory (substring dirname 0 idx))
 986         ;; Else return the current-buffer
 987         (buffer-name (current-buffer)))))
 988    ;; If all else fails, use the buffer's name.
 989    (t
 990     (buffer-name (current-buffer)))))
 991
 992
 993 (defun bookmark-yank-word ()
 994   (interactive)
 995   ;; get the next word from the buffer and append it to the name of
 996   ;; the bookmark currently being set.
 997   (let ((string (save-excursion
 998                     (set-buffer bookmark-current-buffer)
 999                     (goto-char bookmark-yank-point)
1000                     (buffer-substring-no-properties
1001                      (point)
1002                      (progn
1003                        (forward-word 1)
1004                        (setq bookmark-yank-point (point)))))))
1005     (insert string)))
1006
1007
1008 (defun bookmark-buffer-file-name ()
1009   "Return the current buffer's file in a way useful for bookmarks.
1010 For example, if this is a Info buffer, return the Info file's name."
1011   (if (eq major-mode 'Info-mode)
1012         Info-current-file
1013     (or
1014      buffer-file-name
1015      (if (and (boundp 'dired-directory) dired-directory)
1016          (if (stringp dired-directory)
1017              dired-directory
1018            (car dired-directory))))))
1019
1020
1021 (defun bookmark-maybe-load-default-file ()
1022   (and (not bookmarks-already-loaded)
1023        (null bookmark-alist)
1024        (prog2
1025            (and
1026             ;; Possibly the old bookmark file, "~/.emacs-bkmrks", needs
1027             ;; to be renamed.
1028             (file-exists-p (expand-file-name bookmark-old-default-file))
1029             (not (file-exists-p (expand-file-name bookmark-default-file)))
1030             (rename-file (expand-file-name bookmark-old-default-file)
1031                          (expand-file-name bookmark-default-file)))
1032            ;; return t so the `and' will continue...
1033            t)
1034
1035        (file-readable-p (expand-file-name bookmark-default-file))
1036        (bookmark-load bookmark-default-file t t)
1037        (setq bookmarks-already-loaded t)))
1038
1039
1040 (defun bookmark-maybe-sort-alist ()
1041   ;;Return the bookmark-alist for display.  If the bookmark-sort-flag
1042   ;;is non-nil, then return a sorted copy of the alist.
1043   (if bookmark-sort-flag
1044       (setq bookmark-alist
1045             (sort (copy-alist bookmark-alist)
1046                   (function
1047                    (lambda (x y) (string-lessp (car x) (car y))))))))
1048
1049
1050 ;;;###autoload
1051 (defun bookmark-jump (bookmark)
1052   "Jump to bookmark BOOKMARK (a point in some file).
1053 You may have a problem using this function if the value of variable
1054 `bookmark-alist' is nil.  If that happens, you need to load in some
1055 bookmarks.  See help on function `bookmark-load' for more about
1056 this.
1057
1058 If the file pointed to by BOOKMARK no longer exists, you will be asked
1059 if you wish to give the bookmark a new location, and bookmark-jump
1060 will then jump to the new location, as well as recording it in place
1061 of the old one in the permanent bookmark record."
1062   (interactive
1063    (bookmark-completing-read "Jump to bookmark" bookmark-current-bookmark))
1064   (bookmark-maybe-historicize-string bookmark)
1065   (let ((cell (bookmark-jump-noselect bookmark)))
1066     (and cell
1067          (switch-to-buffer (car cell))
1068          (goto-char (cdr cell))
1069          (if bookmark-automatically-show-annotations
1070              ;; if there is an annotation for this bookmark,
1071              ;; show it in a buffer.
1072              (bookmark-show-annotation bookmark)))))
1073
1074
1075 (defun bookmark-file-or-variation-thereof (file)
1076   "Return FILE (a string) if it exists in any reasonable variation, else nil.
1077 Reasonable variations are FILE.gz, FILE.Z, FILE.info, FILE.info.gz, etc."
1078   (cond
1079    ((file-exists-p file)                       file)
1080    ((file-exists-p (concat file ".Z"))         (concat file ".Z"))
1081    ((file-exists-p (concat file ".gz"))        (concat file ".gz"))
1082    ((file-exists-p (concat file ".z"))         (concat file ".z"))
1083    ((file-exists-p (concat file ".info"))      (concat file ".info"))
1084    ((file-exists-p (concat file ".info.gz"))   (concat file ".info.gz"))
1085    ((file-exists-p (concat file ".info.Z"))    (concat file ".info.Z"))
1086    ((file-exists-p (concat file ".info.z"))    (concat file ".info.z"))
1087    ((vc-backend file)                          file) ; maybe VC has it?
1088    (t                                          nil)))
1089
1090
1091 (defun bookmark-jump-noselect (str)
1092   ;; a leetle helper for bookmark-jump :-)
1093   ;; returns (BUFFER . POINT)
1094   (bookmark-maybe-load-default-file)
1095   (let* ((file (expand-file-name (bookmark-get-filename str)))
1096          (forward-str            (bookmark-get-front-context-string str))
1097          (behind-str             (bookmark-get-rear-context-string str))
1098          (place                  (bookmark-get-position str))
1099          (info-node              (bookmark-get-info-node str))
1100          (orig-file              file)
1101          )
1102     (if (setq file (bookmark-file-or-variation-thereof file))
1103         (save-excursion
1104           (save-window-excursion
1105             (if info-node
1106                 ;; Info nodes must be visited with care.
1107                 (progn
1108                   (require 'info)
1109                   (Info-find-node file info-node))
1110               ;; Else no Info.  Can do an ordinary find-file:
1111               (set-buffer (find-file-noselect file))
1112               (goto-char place))
1113
1114             ;; Go searching forward first.  Then, if forward-str exists and
1115             ;; was found in the file, we can search backward for behind-str.
1116             ;; Rationale is that if text was inserted between the two in the
1117             ;; file, it's better to be put before it so you can read it,
1118             ;; rather than after and remain perhaps unaware of the changes.
1119             (if forward-str
1120                 (if (search-forward forward-str (point-max) t)
1121                     (goto-char (match-beginning 0))))
1122             (if behind-str
1123                 (if (search-backward behind-str (point-min) t)
1124                     (goto-char (match-end 0))))
1125             ;; added by db
1126             (setq bookmark-current-bookmark str)
1127             (cons (current-buffer) (point))))
1128
1129       ;; Else unable to find the marked file, so ask if user wants to
1130       ;; relocate the bookmark, else remind them to consider deletion.
1131       (ding)
1132       (if (y-or-n-p (concat (file-name-nondirectory orig-file)
1133                             " nonexistent.  Relocate \""
1134                             str
1135                             "\"? "))
1136           (progn
1137             (bookmark-relocate str)
1138             ;; gasp!  It's a recursive function call in Emacs Lisp!
1139             (bookmark-jump-noselect str))
1140         (message
1141          "Bookmark not relocated; consider removing it \(%s\)." str)
1142         nil))))
1143
1144
1145 ;;;###autoload
1146 (defun bookmark-relocate (bookmark)
1147   "Relocate BOOKMARK to another file (reading file name with minibuffer).
1148 This makes an already existing bookmark point to that file, instead of
1149 the one it used to point at.  Useful when a file has been renamed
1150 after a bookmark was set in it."
1151   (interactive (bookmark-completing-read "Bookmark to relocate"))
1152   (bookmark-maybe-historicize-string bookmark)
1153   (bookmark-maybe-load-default-file)
1154   (let* ((bmrk-filename (bookmark-get-filename bookmark))
1155          (newloc (expand-file-name
1156                   (read-file-name
1157                    (format "Relocate %s to: " bookmark)
1158                    (file-name-directory bmrk-filename)))))
1159     (bookmark-set-filename bookmark newloc)
1160     (bookmark-bmenu-surreptitiously-rebuild-list)))
1161
1162
1163 ;;;###autoload
1164 (defun bookmark-insert-location (bookmark &optional no-history)
1165   "Insert the name of the file associated with BOOKMARK.
1166 Optional second arg NO-HISTORY means don't record this in the
1167 minibuffer history list `bookmark-history'."
1168   (interactive (bookmark-completing-read "Insert bookmark location"))
1169   (or no-history (bookmark-maybe-historicize-string bookmark))
1170   (let ((start (point)))
1171     (prog1
1172         (insert (bookmark-location bookmark)) ; *Return this line*
1173       (if (and (display-color-p) (display-mouse-p))
1174           (add-text-properties start
1175                                (save-excursion (re-search-backward
1176                                                 "[^ \t]")
1177                                                (1+ (point)))
1178                                '(mouse-face highlight
1179                                  help-echo "mouse-2: go to this bookmark"))))))
1180
1181 ;;;###autoload
1182 (defalias 'bookmark-locate 'bookmark-insert-location)
1183
1184 (defun bookmark-location (bookmark)
1185   "Return the name of the file associated with BOOKMARK."
1186   (bookmark-maybe-load-default-file)
1187   (bookmark-get-filename bookmark))
1188
1189
1190 ;;;###autoload
1191 (defun bookmark-rename (old &optional new)
1192   "Change the name of OLD bookmark to NEW name.
1193 If called from keyboard, prompt for OLD and NEW.  If called from
1194 menubar, select OLD from a menu and prompt for NEW.
1195
1196 If called from Lisp, prompt for NEW if only OLD was passed as an
1197 argument.  If called with two strings, then no prompting is done.  You
1198 must pass at least OLD when calling from Lisp.
1199
1200 While you are entering the new name, consecutive C-w's insert
1201 consecutive words from the text of the buffer into the new bookmark
1202 name."
1203   (interactive (bookmark-completing-read "Old bookmark name"))
1204   (bookmark-maybe-historicize-string old)
1205   (bookmark-maybe-load-default-file)
1206
1207   (setq bookmark-current-point (point))
1208   (setq bookmark-yank-point (point))
1209   (setq bookmark-current-buffer (current-buffer))
1210   (let ((newname
1211          (or new   ; use second arg, if non-nil
1212              (read-from-minibuffer
1213               "New name: "
1214               nil
1215               (let ((now-map (copy-keymap minibuffer-local-map)))
1216                 (define-key now-map  "\C-w" 'bookmark-yank-word)
1217                 now-map)
1218               nil
1219               'bookmark-history))))
1220     (bookmark-set-name old newname)
1221     (setq bookmark-current-bookmark newname)
1222     (bookmark-bmenu-surreptitiously-rebuild-list)
1223     (setq bookmark-alist-modification-count
1224           (1+ bookmark-alist-modification-count))
1225     (if (bookmark-time-to-save-p)
1226         (bookmark-save))))
1227
1228
1229 ;;;###autoload
1230 (defun bookmark-insert (bookmark)
1231   "Insert the text of the file pointed to by bookmark BOOKMARK.
1232 You may have a problem using this function if the value of variable
1233 `bookmark-alist' is nil.  If that happens, you need to load in some
1234 bookmarks.  See help on function `bookmark-load' for more about
1235 this."
1236   (interactive (bookmark-completing-read "Insert bookmark contents"))
1237   (bookmark-maybe-historicize-string bookmark)
1238   (bookmark-maybe-load-default-file)
1239   (let ((orig-point (point))
1240         (str-to-insert
1241          (save-excursion
1242            (set-buffer (car (bookmark-jump-noselect bookmark)))
1243            (buffer-string))))
1244     (insert str-to-insert)
1245     (push-mark)
1246     (goto-char orig-point)))
1247
1248
1249 ;;;###autoload
1250 (defun bookmark-delete (bookmark &optional batch)
1251   "Delete BOOKMARK from the bookmark list.
1252 Removes only the first instance of a bookmark with that name.  If
1253 there are one or more other bookmarks with the same name, they will
1254 not be deleted.  Defaults to the \"current\" bookmark \(that is, the
1255 one most recently used in this file, if any\).
1256 Optional second arg BATCH means don't update the bookmark list buffer,
1257 probably because we were called from there."
1258   (interactive
1259    (bookmark-completing-read "Delete bookmark" bookmark-current-bookmark))
1260   (bookmark-maybe-historicize-string bookmark)
1261   (bookmark-maybe-load-default-file)
1262   (let ((will-go (bookmark-get-bookmark bookmark)))
1263     (setq bookmark-alist (delq will-go bookmark-alist))
1264     ;; Added by db, nil bookmark-current-bookmark if the last
1265     ;; occurrence has been deleted
1266     (or (bookmark-get-bookmark bookmark-current-bookmark)
1267         (setq bookmark-current-bookmark nil)))
1268   ;; Don't rebuild the list
1269   (if batch
1270       nil
1271     (bookmark-bmenu-surreptitiously-rebuild-list)
1272     (setq bookmark-alist-modification-count
1273           (1+ bookmark-alist-modification-count))
1274     (if (bookmark-time-to-save-p)
1275         (bookmark-save))))
1276
1277
1278 (defun bookmark-time-to-save-p (&optional last-time)
1279   ;; By Gregory M. Saunders <saunders@cis.ohio-state.edu>
1280   ;; finds out whether it's time to save bookmarks to a file, by
1281   ;; examining the value of variable bookmark-save-flag, and maybe
1282   ;; bookmark-alist-modification-count.  Returns t if they should be
1283   ;; saved, nil otherwise.  if last-time is non-nil, then this is
1284   ;; being called when emacs is killed.
1285   (cond (last-time
1286          (and (> bookmark-alist-modification-count 0)
1287               bookmark-save-flag))
1288         ((numberp bookmark-save-flag)
1289          (>= bookmark-alist-modification-count bookmark-save-flag))
1290         (t
1291          nil)))
1292
1293
1294 ;;;###autoload
1295 (defun bookmark-write ()
1296   "Write bookmarks to a file (reading the file name with the minibuffer).
1297 Don't use this in Lisp programs; use `bookmark-save' instead."
1298   (interactive)
1299   (bookmark-maybe-load-default-file)
1300   (bookmark-save t))
1301
1302
1303 ;;;###autoload
1304 (defun bookmark-save (&optional parg file)
1305   "Save currently defined bookmarks.
1306 Saves by default in the file defined by the variable
1307 `bookmark-default-file'.  With a prefix arg, save it in file FILE
1308 \(second argument\).
1309
1310 If you are calling this from Lisp, the two arguments are PREFIX-ARG
1311 and FILE, and if you just want it to write to the default file, then
1312 pass no arguments.  Or pass in nil and FILE, and it will save in FILE
1313 instead.  If you pass in one argument, and it is non-nil, then the
1314 user will be interactively queried for a file to save in.
1315
1316 When you want to load in the bookmarks from a file, use
1317 \`bookmark-load\', \\[bookmark-load].  That function will prompt you
1318 for a file, defaulting to the file defined by variable
1319 `bookmark-default-file'."
1320   (interactive "P")
1321   (bookmark-maybe-load-default-file)
1322   (cond
1323    ((and (null parg) (null file))
1324     ;;whether interactive or not, write to default file
1325     (bookmark-write-file bookmark-default-file))
1326    ((and (null parg) file)
1327     ;;whether interactive or not, write to given file
1328     (bookmark-write-file file))
1329    ((and parg (not file))
1330     ;;have been called interactively w/ prefix arg
1331     (let ((file (read-file-name "File to save bookmarks in: ")))
1332       (bookmark-write-file file)))
1333    (t ; someone called us with prefix-arg *and* a file, so just write to file
1334     (bookmark-write-file file)))
1335   ;; signal that we have synced the bookmark file by setting this to
1336   ;; 0.  If there was an error at any point before, it will not get
1337   ;; set, which is what we want.
1338   (setq bookmark-alist-modification-count 0))
1339
1340
1341 \f
1342 (defun bookmark-write-file (file)
1343   (save-excursion
1344     (save-window-excursion
1345       (if (>= baud-rate 9600)
1346           (message "Saving bookmarks to file %s..." file))
1347       (set-buffer (let ((enable-local-variables nil))
1348                     (find-file-noselect file)))
1349       (goto-char (point-min))
1350       (delete-region (point-min) (point-max))
1351       (bookmark-insert-file-format-version-stamp)
1352       (pp bookmark-alist (current-buffer))
1353       (let ((version-control
1354              (cond
1355               ((null bookmark-version-control) nil)
1356               ((eq 'never bookmark-version-control) 'never)
1357               ((eq 'nospecial bookmark-version-control) version-control)
1358               (t
1359                t))))
1360         (write-file file)
1361         (kill-buffer (current-buffer))
1362         (if (>= baud-rate 9600)
1363             (message "Saving bookmarks to file %s...done" file))
1364         ))))
1365
1366
1367 (defun bookmark-import-new-list (new-list)
1368   ;; Walk over the new list, adding each individual bookmark
1369   ;; carefully.  "Carefully" means checking against the existing
1370   ;; bookmark-alist and renaming the new bookmarks with <N> extensions
1371   ;; as necessary.
1372   (let ((lst new-list)
1373         (names (bookmark-all-names)))
1374     (while lst
1375       (let* ((full-record (car lst)))
1376         (bookmark-maybe-rename full-record names)
1377         (setq bookmark-alist (nconc bookmark-alist (list full-record)))
1378         (setq names (cons (bookmark-name-from-full-record full-record) names))
1379         (setq lst (cdr lst))))))
1380
1381
1382 (defun bookmark-maybe-rename (full-record names)
1383   ;; just a helper for bookmark-import-new-list; it is only for
1384   ;; readability that this is not inlined.
1385   ;;
1386   ;; Once this has found a free name, it sets full-record to that
1387   ;; name.
1388   (let ((found-name (bookmark-name-from-full-record full-record)))
1389     (if (member found-name names)
1390         ;; We've got a conflict, so generate a new name
1391         (let ((count 2)
1392               (new-name found-name))
1393           (while (member new-name names)
1394             (setq new-name (concat found-name (format "<%d>" count)))
1395             (setq count (1+ count)))
1396           (bookmark-set-name full-record new-name)))))
1397
1398
1399 ;;;###autoload
1400 (defun bookmark-load (file &optional overwrite no-msg)
1401   "Load bookmarks from FILE (which must be in bookmark format).
1402 Appends loaded bookmarks to the front of the list of bookmarks.  If
1403 optional second argument OVERWRITE is non-nil, existing bookmarks are
1404 destroyed.  Optional third arg NO-MSG means don't display any messages
1405 while loading.
1406
1407 If you load a file that doesn't contain a proper bookmark alist, you
1408 will corrupt Emacs's bookmark list.  Generally, you should only load
1409 in files that were created with the bookmark functions in the first
1410 place.  Your own personal bookmark file, `~/.emacs.bmk', is
1411 maintained automatically by Emacs; you shouldn't need to load it
1412 explicitly.
1413
1414 If you load a file containing bookmarks with the same names as
1415 bookmarks already present in your Emacs, the new bookmarks will get
1416 unique numeric suffixes \"<2>\", \"<3>\", ... following the same
1417 method buffers use to resolve name collisions."
1418   (interactive
1419    (list (read-file-name
1420           (format "Load bookmarks from: (%s) "
1421                   bookmark-default-file)
1422           ;;Default might not be used often,
1423           ;;but there's no better default, and
1424           ;;I guess it's better than none at all.
1425           "~/" bookmark-default-file 'confirm)))
1426   (setq file (expand-file-name file))
1427   (if (file-readable-p file)
1428       (save-excursion
1429         (save-window-excursion
1430           (if (and (null no-msg) (>= baud-rate 9600))
1431               (message "Loading bookmarks from %s..." file))
1432           (set-buffer (let ((enable-local-variables nil))
1433                         (find-file-noselect file)))
1434           (goto-char (point-min))
1435           (bookmark-maybe-upgrade-file-format)
1436           (let ((blist (bookmark-alist-from-buffer)))
1437             (if (listp blist)
1438                 (progn
1439                   (if overwrite
1440                       (progn
1441                         (setq bookmark-alist blist)
1442                         (setq bookmark-alist-modification-count 0))
1443                     ;; else
1444                     (bookmark-import-new-list blist)
1445                     (setq bookmark-alist-modification-count
1446                           (1+ bookmark-alist-modification-count)))
1447                   (if (string-equal
1448                        (expand-file-name bookmark-default-file)
1449                        file)
1450                       (setq bookmarks-already-loaded t))
1451                   (bookmark-bmenu-surreptitiously-rebuild-list))
1452               (error "Invalid bookmark list in %s" file)))
1453           (kill-buffer (current-buffer)))
1454         (if (and (null no-msg) (>= baud-rate 9600))
1455             (message "Loading bookmarks from %s...done" file)))
1456     (error "Cannot read bookmark file %s" file)))
1457
1458
1459 \f
1460 ;;; Code supporting the dired-like bookmark menu.  Prefix is
1461 ;;; "bookmark-bmenu" for "buffer-menu":
1462
1463
1464 (defvar bookmark-bmenu-bookmark-column nil)
1465
1466
1467 (defvar bookmark-bmenu-hidden-bookmarks ())
1468
1469
1470 (defvar bookmark-bmenu-mode-map nil)
1471
1472
1473 (if bookmark-bmenu-mode-map
1474     nil
1475   (setq bookmark-bmenu-mode-map (make-keymap))
1476   (suppress-keymap bookmark-bmenu-mode-map t)
1477   (define-key bookmark-bmenu-mode-map "q" 'quit-window)
1478   (define-key bookmark-bmenu-mode-map "v" 'bookmark-bmenu-select)
1479   (define-key bookmark-bmenu-mode-map "w" 'bookmark-bmenu-locate)
1480   (define-key bookmark-bmenu-mode-map "2" 'bookmark-bmenu-2-window)
1481   (define-key bookmark-bmenu-mode-map "1" 'bookmark-bmenu-1-window)
1482   (define-key bookmark-bmenu-mode-map "j" 'bookmark-bmenu-this-window)
1483   (define-key bookmark-bmenu-mode-map "\C-c\C-c" 'bookmark-bmenu-this-window)
1484   (define-key bookmark-bmenu-mode-map "f" 'bookmark-bmenu-this-window)
1485   (define-key bookmark-bmenu-mode-map "\C-m" 'bookmark-bmenu-this-window)
1486   (define-key bookmark-bmenu-mode-map "o" 'bookmark-bmenu-other-window)
1487   (define-key bookmark-bmenu-mode-map "\C-o"
1488     'bookmark-bmenu-switch-other-window)
1489   (define-key bookmark-bmenu-mode-map "s" 'bookmark-bmenu-save)
1490   (define-key bookmark-bmenu-mode-map "k" 'bookmark-bmenu-delete)
1491   (define-key bookmark-bmenu-mode-map "\C-d" 'bookmark-bmenu-delete-backwards)
1492   (define-key bookmark-bmenu-mode-map "x" 'bookmark-bmenu-execute-deletions)
1493   (define-key bookmark-bmenu-mode-map "d" 'bookmark-bmenu-delete)
1494   (define-key bookmark-bmenu-mode-map " " 'next-line)
1495   (define-key bookmark-bmenu-mode-map "n" 'next-line)
1496   (define-key bookmark-bmenu-mode-map "p" 'previous-line)
1497   (define-key bookmark-bmenu-mode-map "\177" 'bookmark-bmenu-backup-unmark)
1498   (define-key bookmark-bmenu-mode-map "?" 'describe-mode)
1499   (define-key bookmark-bmenu-mode-map "u" 'bookmark-bmenu-unmark)
1500   (define-key bookmark-bmenu-mode-map "m" 'bookmark-bmenu-mark)
1501   (define-key bookmark-bmenu-mode-map "l" 'bookmark-bmenu-load)
1502   (define-key bookmark-bmenu-mode-map "r" 'bookmark-bmenu-rename)
1503   (define-key bookmark-bmenu-mode-map "t" 'bookmark-bmenu-toggle-filenames)
1504   (define-key bookmark-bmenu-mode-map "a" 'bookmark-bmenu-show-annotation)
1505   (define-key bookmark-bmenu-mode-map "A" 'bookmark-bmenu-show-all-annotations)
1506   (define-key bookmark-bmenu-mode-map "e" 'bookmark-bmenu-edit-annotation)
1507   (define-key bookmark-bmenu-mode-map [mouse-2]
1508     'bookmark-bmenu-other-window-with-mouse))
1509
1510
1511
1512 ;; Bookmark Buffer Menu mode is suitable only for specially formatted
1513 ;; data.
1514 (put 'bookmark-bmenu-mode 'mode-class 'special)
1515
1516
1517 ;; todo: need to display whether or not bookmark exists as a buffer in
1518 ;; flag column.
1519
1520 ;; Format:
1521 ;; FLAGS  BOOKMARK [ LOCATION ]
1522
1523
1524 (defun bookmark-bmenu-surreptitiously-rebuild-list ()
1525   "Rebuild the Bookmark List if it exists.
1526 Don't affect the buffer ring order."
1527   (if (get-buffer "*Bookmark List*")
1528       (save-excursion
1529         (save-window-excursion
1530           (bookmark-bmenu-list)))))
1531
1532
1533 ;;;###autoload
1534 (defun bookmark-bmenu-list ()
1535   "Display a list of existing bookmarks.
1536 The list is displayed in a buffer named `*Bookmark List*'.
1537 The leftmost column displays a D if the bookmark is flagged for
1538 deletion, or > if it is flagged for displaying."
1539   (interactive)
1540   (bookmark-maybe-load-default-file)
1541   (if (interactive-p)
1542       (switch-to-buffer (get-buffer-create "*Bookmark List*"))
1543     (set-buffer (get-buffer-create "*Bookmark List*")))
1544   (let ((buffer-read-only nil))
1545     (delete-region (point-max) (point-min))
1546     (goto-char (point-min)) ;sure are playing it safe...
1547     (insert "% Bookmark\n- --------\n")
1548     (bookmark-maybe-sort-alist)
1549     (mapcar
1550      (lambda (full-record)
1551        ;; if a bookmark has an annotation, prepend a "*"
1552        ;; in the list of bookmarks.
1553        (let ((annotation (bookmark-get-annotation
1554                           (bookmark-name-from-full-record full-record))))
1555          (if (and annotation (not (string-equal annotation "")))
1556              (insert " *")
1557            (insert "  "))
1558          (let ((start (point)))
1559            (insert (bookmark-name-from-full-record full-record))
1560            (if (and (display-color-p) (display-mouse-p))
1561                (add-text-properties start
1562                                     (save-excursion (re-search-backward
1563                                                      "[^ \t]")
1564                                                     (1+ (point)))
1565                                     '(mouse-face highlight
1566                                       help-echo "mouse-2: go to this bookmark")))
1567            (insert "\n")
1568            )))
1569      bookmark-alist))
1570   (goto-char (point-min))
1571   (forward-line 2)
1572   (bookmark-bmenu-mode)
1573   (if bookmark-bmenu-toggle-filenames
1574       (bookmark-bmenu-toggle-filenames t)))
1575
1576 ;;;###autoload
1577 (defalias 'list-bookmarks 'bookmark-bmenu-list)
1578 ;;;###autoload
1579 (defalias 'edit-bookmarks 'bookmark-bmenu-list)
1580
1581
1582
1583 (defun bookmark-bmenu-mode ()
1584   "Major mode for editing a list of bookmarks.
1585 Each line describes one of the bookmarks in Emacs.
1586 Letters do not insert themselves; instead, they are commands.
1587 Bookmark names preceded by a \"*\" have annotations.
1588 \\<bookmark-bmenu-mode-map>
1589 \\[bookmark-bmenu-mark] -- mark bookmark to be displayed.
1590 \\[bookmark-bmenu-select] -- select bookmark of line point is on.
1591   Also show bookmarks marked using m in other windows.
1592 \\[bookmark-bmenu-toggle-filenames] -- toggle displaying of filenames (they may obscure long bookmark names).
1593 \\[bookmark-bmenu-locate] -- display (in minibuffer) location of this bookmark.
1594 \\[bookmark-bmenu-1-window] -- select this bookmark in full-frame window.
1595 \\[bookmark-bmenu-2-window] -- select this bookmark in one window,
1596   together with bookmark selected before this one in another window.
1597 \\[bookmark-bmenu-this-window] -- select this bookmark in place of the bookmark menu buffer.
1598 \\[bookmark-bmenu-other-window] -- select this bookmark in another window,
1599   so the bookmark menu bookmark remains visible in its window.
1600 \\[bookmark-bmenu-switch-other-window] -- switch the other window to this bookmark.
1601 \\[bookmark-bmenu-rename] -- rename this bookmark \(prompts for new name\).
1602 \\[bookmark-bmenu-delete] -- mark this bookmark to be deleted, and move down.
1603 \\[bookmark-bmenu-delete-backwards] -- mark this bookmark to be deleted, and move up.
1604 \\[bookmark-bmenu-execute-deletions] -- delete bookmarks marked with `\\[bookmark-bmenu-delete]'.
1605 \\[bookmark-bmenu-save] -- save the current bookmark list in the default file.
1606   With a prefix arg, prompts for a file to save in.
1607 \\[bookmark-bmenu-load] -- load in a file of bookmarks (prompts for file.)
1608 \\[bookmark-bmenu-unmark] -- remove all kinds of marks from current line.
1609   With prefix argument, also move up one line.
1610 \\[bookmark-bmenu-backup-unmark] -- back up a line and remove marks.
1611 \\[bookmark-bmenu-show-annotation] -- show the annotation, if it exists, for the current bookmark
1612   in another buffer.
1613 \\[bookmark-bmenu-show-all-annotations] -- show the annotations of all bookmarks in another buffer.
1614 \\[bookmark-bmenu-edit-annotation] -- edit the annotation for the current bookmark."
1615   (kill-all-local-variables)
1616   (use-local-map bookmark-bmenu-mode-map)
1617   (setq truncate-lines t)
1618   (setq buffer-read-only t)
1619   (setq major-mode 'bookmark-bmenu-mode)
1620   (setq mode-name "Bookmark Menu")
1621   (run-hooks 'bookmark-bmenu-mode-hook))
1622
1623
1624 (defun bookmark-bmenu-toggle-filenames (&optional show)
1625   "Toggle whether filenames are shown in the bookmark list.
1626 Optional argument SHOW means show them unconditionally."
1627   (interactive)
1628   (cond
1629    (show
1630     (setq bookmark-bmenu-toggle-filenames nil)
1631     (bookmark-bmenu-show-filenames)
1632     (setq bookmark-bmenu-toggle-filenames t))
1633    (bookmark-bmenu-toggle-filenames
1634     (bookmark-bmenu-hide-filenames)
1635     (setq bookmark-bmenu-toggle-filenames nil))
1636    (t
1637     (bookmark-bmenu-show-filenames)
1638     (setq bookmark-bmenu-toggle-filenames t))))
1639
1640
1641 (defun bookmark-bmenu-show-filenames (&optional force)
1642   (if (and (not force) bookmark-bmenu-toggle-filenames)
1643       nil ;already shown, so do nothing
1644     (save-excursion
1645       (save-window-excursion
1646         (goto-char (point-min))
1647         (forward-line 2)
1648         (setq bookmark-bmenu-hidden-bookmarks ())
1649         (let ((buffer-read-only nil))
1650           (while (< (point) (point-max))
1651             (let ((bmrk (bookmark-bmenu-bookmark)))
1652               (setq bookmark-bmenu-hidden-bookmarks
1653                     (cons bmrk bookmark-bmenu-hidden-bookmarks))
1654               (let ((start (save-excursion (end-of-line) (point))))
1655                 (move-to-column bookmark-bmenu-file-column t)
1656                 ;; Strip off `mouse-face' from the white spaces region.
1657                 (if (and (display-color-p) (display-mouse-p))
1658                     (remove-text-properties start (point)
1659                                             '(mouse-face nil help-echo nil))))
1660               (delete-region (point) (progn (end-of-line) (point)))
1661               (insert "  ")
1662               ;; Pass the NO-HISTORY arg:
1663               (bookmark-insert-location bmrk t)
1664               (forward-line 1))))))))
1665
1666
1667 (defun bookmark-bmenu-hide-filenames (&optional force)
1668   (if (and (not force) bookmark-bmenu-toggle-filenames)
1669       ;; nothing to hide if above is nil
1670       (save-excursion
1671         (save-window-excursion
1672           (goto-char (point-min))
1673           (forward-line 2)
1674           (setq bookmark-bmenu-hidden-bookmarks
1675                 (nreverse bookmark-bmenu-hidden-bookmarks))
1676           (save-excursion
1677             (goto-char (point-min))
1678             (search-forward "Bookmark")
1679             (backward-word 1)
1680             (setq bookmark-bmenu-bookmark-column (current-column)))
1681           (save-excursion
1682             (let ((buffer-read-only nil))
1683               (while bookmark-bmenu-hidden-bookmarks
1684                 (move-to-column bookmark-bmenu-bookmark-column t)
1685                 (bookmark-kill-line)
1686                 (let ((start (point)))
1687                   (insert (car bookmark-bmenu-hidden-bookmarks))
1688                   (if (and (display-color-p) (display-mouse-p))
1689                       (add-text-properties start
1690                                            (save-excursion (re-search-backward
1691                                                             "[^ \t]")
1692                                                            (1+ (point)))
1693                                            '(mouse-face highlight
1694                                              help-echo
1695                                              "mouse-2: go to this bookmark"))))
1696                 (setq bookmark-bmenu-hidden-bookmarks
1697                       (cdr bookmark-bmenu-hidden-bookmarks))
1698                 (forward-line 1))))))))
1699
1700
1701 (defun bookmark-bmenu-check-position ()
1702   ;; Returns non-nil if on a line with a bookmark.
1703   ;; (The actual value returned is bookmark-alist).
1704   ;; Else reposition and try again, else return nil.
1705   (cond ((< (count-lines (point-min) (point)) 2)
1706          (goto-char (point-min))
1707          (forward-line 2)
1708          bookmark-alist)
1709         ((and (bolp) (eobp))
1710          (beginning-of-line 0)
1711          bookmark-alist)
1712         (t
1713          bookmark-alist)))
1714
1715
1716 (defun bookmark-bmenu-bookmark ()
1717   ;; return a string which is bookmark of this line.
1718   (if (bookmark-bmenu-check-position)
1719       (save-excursion
1720         (save-window-excursion
1721           (goto-char (point-min))
1722           (search-forward "Bookmark")
1723           (backward-word 1)
1724           (setq bookmark-bmenu-bookmark-column (current-column)))))
1725   (if bookmark-bmenu-toggle-filenames
1726       (bookmark-bmenu-hide-filenames))
1727   (save-excursion
1728     (save-window-excursion
1729       (beginning-of-line)
1730       (forward-char bookmark-bmenu-bookmark-column)
1731       (prog1
1732           (buffer-substring-no-properties (point)
1733                             (progn
1734                               (end-of-line)
1735                               (point)))
1736         ;; well, this is certainly crystal-clear:
1737         (if bookmark-bmenu-toggle-filenames
1738             (bookmark-bmenu-toggle-filenames t))))))
1739
1740
1741 (defun bookmark-show-annotation (bookmark)
1742   "Display the annotation for bookmark named BOOKMARK in a buffer,
1743 if an annotation exists."
1744   (let ((annotation (bookmark-get-annotation bookmark)))
1745     (if (and annotation (not (string-equal annotation "")))
1746         (save-excursion
1747           (let ((old-buf (current-buffer)))
1748             (pop-to-buffer (get-buffer-create "*Bookmark Annotation*") t)
1749             (delete-region (point-min) (point-max))
1750             ;; (insert (concat "Annotation for bookmark '" bookmark "':\n\n"))
1751             (insert annotation)
1752             (goto-char (point-min))
1753             (pop-to-buffer old-buf))))))
1754
1755
1756 (defun bookmark-show-all-annotations ()
1757   "Display the annotations for all bookmarks in a buffer."
1758   (let ((old-buf (current-buffer)))
1759     (pop-to-buffer (get-buffer-create "*Bookmark Annotation*") t)
1760     (delete-region (point-min) (point-max))
1761     (mapcar
1762      (lambda (full-record)
1763        (let* ((name (bookmark-name-from-full-record full-record))
1764               (ann  (bookmark-get-annotation name)))
1765          (insert (concat name ":\n"))
1766          (if (and ann (not (string-equal ann "")))
1767              ;; insert the annotation, indented by 4 spaces.
1768              (progn
1769                (save-excursion (insert ann))
1770                (while (< (point) (point-max))
1771                  (beginning-of-line) ; paranoia
1772                  (insert "    ")
1773                  (forward-line)
1774                  (end-of-line))))))
1775      bookmark-alist)
1776     (goto-char (point-min))
1777     (pop-to-buffer old-buf)))
1778
1779
1780 (defun bookmark-bmenu-mark ()
1781   "Mark bookmark on this line to be displayed by \\<bookmark-bmenu-mode-map>\\[bookmark-bmenu-select]."
1782   (interactive)
1783   (beginning-of-line)
1784   (if (bookmark-bmenu-check-position)
1785       (let ((buffer-read-only nil))
1786         (delete-char 1)
1787         (insert ?>)
1788         (forward-line 1)
1789         (bookmark-bmenu-check-position))))
1790
1791
1792 (defun bookmark-bmenu-select ()
1793   "Select this line's bookmark; also display bookmarks marked with `>'.
1794 You can mark bookmarks with the \\<bookmark-bmenu-mode-map>\\[bookmark-bmenu-mark] command."
1795   (interactive)
1796   (if (bookmark-bmenu-check-position)
1797       (let ((bmrk (bookmark-bmenu-bookmark))
1798             (menu (current-buffer))
1799             (others ())
1800             tem)
1801         (goto-char (point-min))
1802         (while (re-search-forward "^>" nil t)
1803           (setq tem (bookmark-bmenu-bookmark))
1804           (let ((buffer-read-only nil))
1805             (delete-char -1)
1806             (insert ?\ ))
1807           (or (string-equal tem bmrk)
1808               (member tem others)
1809               (setq others (cons tem others))))
1810         (setq others (nreverse others)
1811               tem (/ (1- (frame-height)) (1+ (length others))))
1812         (delete-other-windows)
1813         (bookmark-jump bmrk)
1814         (bury-buffer menu)
1815         (if others
1816             (while others
1817               (split-window nil tem)
1818               (other-window 1)
1819               (bookmark-jump (car others))
1820               (setq others (cdr others)))
1821           (other-window 1)))))
1822
1823
1824 (defun bookmark-bmenu-save (parg)
1825   "Save the current list into a bookmark file.
1826 With a prefix arg, prompts for a file to save them in."
1827   (interactive "P")
1828   (save-excursion
1829     (save-window-excursion
1830       (bookmark-save parg))))
1831
1832
1833 (defun bookmark-bmenu-load ()
1834   "Load the bookmark file and rebuild the bookmark menu-buffer."
1835   (interactive)
1836   (if (bookmark-bmenu-check-position)
1837       (save-excursion
1838         (save-window-excursion
1839           ;; This will call `bookmark-bmenu-list'
1840           (call-interactively 'bookmark-load)))))
1841
1842
1843 (defun bookmark-bmenu-1-window ()
1844   "Select this line's bookmark, alone, in full frame."
1845   (interactive)
1846   (if (bookmark-bmenu-check-position)
1847       (progn
1848         (bookmark-jump (bookmark-bmenu-bookmark))
1849         (bury-buffer (other-buffer))
1850         (delete-other-windows))))
1851
1852
1853 (defun bookmark-bmenu-2-window ()
1854   "Select this line's bookmark, with previous buffer in second window."
1855   (interactive)
1856   (if (bookmark-bmenu-check-position)
1857       (let ((bmrk (bookmark-bmenu-bookmark))
1858             (menu (current-buffer))
1859             (pop-up-windows t))
1860         (delete-other-windows)
1861         (switch-to-buffer (other-buffer))
1862         (let* ((pair (bookmark-jump-noselect bmrk))
1863                (buff (car pair))
1864                (pos  (cdr pair)))
1865           (pop-to-buffer buff)
1866           (goto-char pos))
1867         (bury-buffer menu))))
1868
1869
1870 (defun bookmark-bmenu-this-window ()
1871   "Select this line's bookmark in this window."
1872   (interactive)
1873   (if (bookmark-bmenu-check-position)
1874       (bookmark-jump (bookmark-bmenu-bookmark))))
1875
1876
1877 (defun bookmark-bmenu-other-window ()
1878   "Select this line's bookmark in other window, leaving bookmark menu visible."
1879   (interactive)
1880   (let ((bookmark (bookmark-bmenu-bookmark)))
1881     (if (bookmark-bmenu-check-position)
1882         (let* ((pair (bookmark-jump-noselect bookmark))
1883                (buff (car pair))
1884                (pos  (cdr pair)))
1885           (switch-to-buffer-other-window buff)
1886           (goto-char pos)
1887           (set-window-point (get-buffer-window buff) pos)
1888           (bookmark-show-annotation bookmark)))))
1889
1890
1891 (defun bookmark-bmenu-switch-other-window ()
1892   "Make the other window select this line's bookmark.
1893 The current window remains selected."
1894   (interactive)
1895   (let ((bookmark (bookmark-bmenu-bookmark))
1896         (pop-up-windows t)
1897         same-window-buffer-names
1898         same-window-regexps)
1899     (if (bookmark-bmenu-check-position)
1900         (let* ((pair (bookmark-jump-noselect bookmark))
1901                (buff (car pair))
1902                (pos  (cdr pair)))
1903           (display-buffer buff)
1904           (let ((o-buffer (current-buffer)))
1905             ;; save-excursion won't do
1906             (set-buffer buff)
1907             (goto-char pos)
1908             (set-window-point (get-buffer-window buff) pos)
1909             (set-buffer o-buffer))
1910           (bookmark-show-annotation bookmark)))))
1911
1912 (defun bookmark-bmenu-other-window-with-mouse (event)
1913   "Select bookmark at the mouse pointer in other window, leaving bookmark menu visible."
1914   (interactive "e")
1915   (save-excursion
1916     (set-buffer (window-buffer (posn-window (event-end event))))
1917     (save-excursion
1918       (goto-char (posn-point (event-end event)))
1919       (bookmark-bmenu-other-window))))
1920
1921
1922 (defun bookmark-bmenu-show-annotation ()
1923   "Show the annotation for the current bookmark in another window."
1924   (interactive)
1925   (let ((bookmark (bookmark-bmenu-bookmark)))
1926     (if (bookmark-bmenu-check-position)
1927         (bookmark-show-annotation bookmark))))
1928
1929
1930 (defun bookmark-bmenu-show-all-annotations ()
1931   "Show the annotation for all bookmarks in another window."
1932   (interactive)
1933   (bookmark-show-all-annotations))
1934
1935
1936 (defun bookmark-bmenu-edit-annotation ()
1937   "Edit the annotation for the current bookmark in another window."
1938   (interactive)
1939   (let ((bookmark (bookmark-bmenu-bookmark)))
1940     (if (bookmark-bmenu-check-position)
1941         (bookmark-edit-annotation bookmark))))
1942
1943
1944 (defun bookmark-bmenu-unmark (&optional backup)
1945   "Cancel all requested operations on bookmark on this line and move down.
1946 Optional BACKUP means move up."
1947   (interactive "P")
1948   (beginning-of-line)
1949   (if (bookmark-bmenu-check-position)
1950       (progn
1951         (let ((buffer-read-only nil))
1952           (delete-char 1)
1953           ;; any flags to reset according to circumstances?  How about a
1954           ;; flag indicating whether this bookmark is being visited?
1955           ;; well, we don't have this now, so maybe later.
1956           (insert " "))
1957         (forward-line (if backup -1 1))
1958         (bookmark-bmenu-check-position))))
1959
1960
1961 (defun bookmark-bmenu-backup-unmark ()
1962   "Move up and cancel all requested operations on bookmark on line above."
1963   (interactive)
1964   (forward-line -1)
1965   (if (bookmark-bmenu-check-position)
1966       (progn
1967         (bookmark-bmenu-unmark)
1968         (forward-line -1)
1969         (bookmark-bmenu-check-position))))
1970
1971
1972 (defun bookmark-bmenu-delete ()
1973   "Mark bookmark on this line to be deleted.
1974 To carry out the deletions that you've marked, use \\<bookmark-bmenu-mode-map>\\[bookmark-bmenu-execute-deletions]."
1975   (interactive)
1976   (beginning-of-line)
1977   (if (bookmark-bmenu-check-position)
1978       (let ((buffer-read-only nil))
1979         (delete-char 1)
1980         (insert ?D)
1981         (forward-line 1)
1982         (bookmark-bmenu-check-position))))
1983
1984
1985 (defun bookmark-bmenu-delete-backwards ()
1986   "Mark bookmark on this line to be deleted, then move up one line.
1987 To carry out the deletions that you've marked, use \\<bookmark-bmenu-mode-map>\\[bookmark-bmenu-execute-deletions]."
1988   (interactive)
1989   (bookmark-bmenu-delete)
1990   (forward-line -2)
1991   (if (bookmark-bmenu-check-position)
1992       (forward-line 1))
1993   (bookmark-bmenu-check-position))
1994
1995
1996 (defun bookmark-bmenu-execute-deletions ()
1997   "Delete bookmarks marked with \\<Buffer-menu-mode-map>\\[Buffer-menu-delete] commands."
1998   (interactive)
1999   (message "Deleting bookmarks...")
2000   (let ((hide-em bookmark-bmenu-toggle-filenames)
2001         (o-point  (point))
2002         (o-str    (save-excursion
2003                     (beginning-of-line)
2004                     (if (looking-at "^D")
2005                         nil
2006                       (buffer-substring
2007                        (point)
2008                        (progn (end-of-line) (point))))))
2009         (o-col     (current-column)))
2010     (if hide-em (bookmark-bmenu-hide-filenames))
2011     (setq bookmark-bmenu-toggle-filenames nil)
2012     (goto-char (point-min))
2013     (forward-line 1)
2014     (while (re-search-forward "^D" (point-max) t)
2015       (bookmark-delete (bookmark-bmenu-bookmark) t)) ; pass BATCH arg
2016     (bookmark-bmenu-list)
2017     (setq bookmark-bmenu-toggle-filenames hide-em)
2018     (if bookmark-bmenu-toggle-filenames
2019         (bookmark-bmenu-toggle-filenames t))
2020     (if o-str
2021         (progn
2022           (goto-char (point-min))
2023           (search-forward o-str)
2024           (beginning-of-line)
2025           (forward-char o-col))
2026       (goto-char o-point))
2027     (beginning-of-line)
2028     (setq bookmark-alist-modification-count
2029           (1+ bookmark-alist-modification-count))
2030     (if (bookmark-time-to-save-p)
2031         (bookmark-save))
2032     (message "Deleting bookmarks...done")
2033     ))
2034
2035
2036 (defun bookmark-bmenu-rename ()
2037   "Rename bookmark on current line.  Prompts for a new name."
2038   (interactive)
2039   (if (bookmark-bmenu-check-position)
2040       (let ((bmrk (bookmark-bmenu-bookmark))
2041             (thispoint (point)))
2042         (bookmark-rename bmrk)
2043         (bookmark-bmenu-list)
2044         (goto-char thispoint))))
2045
2046
2047 (defun bookmark-bmenu-locate ()
2048   "Display location of this bookmark.  Displays in the minibuffer."
2049   (interactive)
2050   (if (bookmark-bmenu-check-position)
2051       (let ((bmrk (bookmark-bmenu-bookmark)))
2052         (message (bookmark-location bmrk)))))
2053
2054
2055 \f
2056 ;;; Menu bar stuff.  Prefix is "bookmark-menu".
2057
2058 (defun bookmark-menu-build-paned-menu (name entries)
2059   "Build a multi-paned menu named NAME from the strings in ENTRIES.
2060 That is, ENTRIES is a list of strings which appear as the choices
2061 in the menu.  The number of panes depends on the number of entries.
2062 The visible entries are truncated to `bookmark-menu-length', but the
2063 strings returned are not."
2064   (let* ((f-height (/ (frame-height) 2))
2065          (pane-list
2066           (let (temp-pane-list
2067                 (iter 0))
2068             (while entries
2069               (let (lst
2070                     (count 0))
2071                 (while (and (< count f-height) entries)
2072                   (let ((str (car entries)))
2073                     (setq lst (cons
2074                                (cons
2075                                 (if (> (length str) bookmark-menu-length)
2076                                     (substring str 0 bookmark-menu-length)
2077                                   str)
2078                                 str)
2079                                lst))
2080                     (setq entries (cdr entries))
2081                     (setq count (1+ count))))
2082                 (setq iter (1+ iter))
2083                 (setq
2084                  temp-pane-list
2085                  (cons
2086                   (cons
2087                    (format "-*- %s (%d) -*-" name iter)
2088                    (nreverse lst))
2089                   temp-pane-list))))
2090             (nreverse temp-pane-list))))
2091
2092     ;; Return the menu:
2093     (cons (concat "-*- " name " -*-") pane-list)))
2094
2095
2096 (defun bookmark-menu-popup-paned-menu (event name entries)
2097   "Pop up multi-paned menu at EVENT, return string chosen from ENTRIES.
2098 That is, ENTRIES is a list of strings which appear as the choices
2099 in the menu.
2100 The number of panes depends on the number of entries."
2101   (interactive "e")
2102   (x-popup-menu event (bookmark-menu-build-paned-menu name entries)))
2103
2104
2105 (defun bookmark-menu-popup-paned-bookmark-menu (event name)
2106   "Pop up menu of bookmarks, return chosen bookmark.
2107 Pop up at EVENT, menu's name is NAME.
2108 The number of panes depends on the number of bookmarks."
2109   (bookmark-menu-popup-paned-menu event name (bookmark-all-names)))
2110
2111
2112 (defun bookmark-popup-menu-and-apply-function (func-sym menu-label event)
2113   ;; help function for making menus that need to apply a bookmark
2114   ;; function to a string.
2115   (let* ((choice (bookmark-menu-popup-paned-bookmark-menu
2116                   event menu-label)))
2117     (if choice (apply func-sym (list choice)))))
2118
2119
2120 ;;;###autoload
2121 (defun bookmark-menu-insert (event)
2122   "Insert the text of the file pointed to by bookmark BOOKMARK.
2123 You may have a problem using this function if the value of variable
2124 `bookmark-alist' is nil.  If that happens, you need to load in some
2125 bookmarks.  See help on function `bookmark-load' for more about
2126 this.
2127
2128 Warning: this function only takes an EVENT as argument.  Use the
2129 corresponding bookmark function from Lisp \(the one without the
2130 \"-menu-\" in its name\)."
2131   (interactive "e")
2132   (bookmark-popup-menu-and-apply-function
2133    'bookmark-insert "Insert Bookmark Contents" event))
2134
2135
2136 ;;;###autoload
2137 (defun bookmark-menu-jump (event)
2138   "Jump to bookmark BOOKMARK (a point in some file).
2139 You may have a problem using this function if the value of variable
2140 `bookmark-alist' is nil.  If that happens, you need to load in some
2141 bookmarks.  See help on function `bookmark-load' for more about
2142 this.
2143
2144 Warning: this function only takes an EVENT as argument.  Use the
2145 corresponding bookmark function from Lisp \(the one without the
2146 \"-menu-\" in its name\)."
2147   (interactive "e")
2148   (bookmark-popup-menu-and-apply-function
2149    'bookmark-jump "Jump to Bookmark" event))
2150
2151
2152 ;;;###autoload
2153 (defun bookmark-menu-locate (event)
2154   "Insert the name of the file associated with BOOKMARK.
2155 \(This is not the same as the contents of that file\).
2156
2157 Warning: this function only takes an EVENT as argument.  Use the
2158 corresponding bookmark function from Lisp \(the one without the
2159 \"-menu-\" in its name\)."
2160   (interactive "e")
2161   (bookmark-popup-menu-and-apply-function
2162    'bookmark-insert-location "Insert Bookmark Location" event))
2163
2164
2165 ;;;###autoload
2166 (defun bookmark-menu-rename (event)
2167   "Change the name of OLD-BOOKMARK to NEWNAME.
2168 If called from keyboard, prompts for OLD-BOOKMARK and NEWNAME.
2169 If called from menubar, OLD-BOOKMARK is selected from a menu, and
2170 prompts for NEWNAME.
2171 If called from Lisp, prompts for NEWNAME if only OLD-BOOKMARK was
2172 passed as an argument.  If called with two strings, then no prompting
2173 is done.  You must pass at least OLD-BOOKMARK when calling from Lisp.
2174
2175 While you are entering the new name, consecutive C-w's insert
2176 consecutive words from the text of the buffer into the new bookmark
2177 name.
2178
2179 Warning: this function only takes an EVENT as argument.  Use the
2180 corresponding bookmark function from Lisp \(the one without the
2181 \"-menu-\" in its name\)."
2182   (interactive "e")
2183   (bookmark-popup-menu-and-apply-function
2184    'bookmark-rename "Rename Bookmark" event))
2185
2186
2187 ;;;###autoload
2188 (defun bookmark-menu-delete (event)
2189   "Delete the bookmark named NAME from the bookmark list.
2190 Removes only the first instance of a bookmark with that name.  If
2191 there are one or more other bookmarks with the same name, they will
2192 not be deleted.  Defaults to the \"current\" bookmark \(that is, the
2193 one most recently used in this file, if any\).
2194
2195 Warning: this function only takes an EVENT as argument.  Use the
2196 corresponding bookmark function from Lisp \(the one without the
2197 \"-menu-\" in its name\)."
2198   (interactive "e")
2199   (bookmark-popup-menu-and-apply-function
2200    'bookmark-delete "Delete Bookmark" event))
2201
2202
2203 ;; Thanks to Roland McGrath for fixing menubar.el so that the
2204 ;; following works, and for explaining what to do to make it work.
2205
2206 ;; We MUST autoload EACH form used to set up this variable's value, so
2207 ;; that the whole job is done in loaddefs.el.
2208
2209 ;; Emacs menubar stuff.
2210
2211 ;;;###autoload
2212 (defvar menu-bar-bookmark-map (make-sparse-keymap "Bookmark functions"))
2213
2214 ;;;###autoload
2215 (defalias 'menu-bar-bookmark-map (symbol-value 'menu-bar-bookmark-map))
2216
2217 ;; make bookmarks appear toward the right side of the menu.
2218 (if (boundp 'menu-bar-final-items)
2219     (if menu-bar-final-items
2220         (setq menu-bar-final-items
2221               (cons 'bookmark menu-bar-final-items)))
2222   (setq menu-bar-final-items '(bookmark)))
2223
2224 ;;;###autoload
2225 (define-key menu-bar-bookmark-map [load]
2226   '("Load a Bookmark File..." . bookmark-load))
2227
2228 ;;;###autoload
2229 (define-key menu-bar-bookmark-map [write]
2230   '("Save Bookmarks As..." . bookmark-write))
2231
2232 ;;;###autoload
2233 (define-key menu-bar-bookmark-map [save]
2234   '("Save Bookmarks" . bookmark-save))
2235
2236 ;;;###autoload
2237 (define-key menu-bar-bookmark-map [edit]
2238   '("Edit Bookmark List" . bookmark-bmenu-list))
2239
2240 ;;;###autoload
2241 (define-key menu-bar-bookmark-map [delete]
2242   '("Delete Bookmark" . bookmark-menu-delete))
2243
2244 ;;;###autoload
2245 (define-key menu-bar-bookmark-map [rename]
2246   '("Rename Bookmark" . bookmark-menu-rename))
2247
2248 ;;;###autoload
2249 (define-key menu-bar-bookmark-map [locate]
2250   '("Insert Location" . bookmark-menu-locate))
2251
2252 ;;;###autoload
2253 (define-key menu-bar-bookmark-map [insert]
2254   '("Insert Contents" . bookmark-menu-insert))
2255
2256 ;;;###autoload
2257 (define-key menu-bar-bookmark-map [set]
2258   '("Set Bookmark" . bookmark-set))
2259
2260 ;;;###autoload
2261 (define-key menu-bar-bookmark-map [jump]
2262   '("Jump to Bookmark" . bookmark-menu-jump))
2263
2264 ;;;; end bookmark menu stuff ;;;;
2265
2266 \f
2267 ;;; Load Hook
2268 (defvar bookmark-load-hook nil
2269   "Hook to run at the end of loading bookmark.")
2270
2271 ;;; Exit Hook, called from kill-emacs-hook
2272 (defvar bookmark-exit-hook nil
2273   "Hook to run when emacs exits")
2274
2275 (defun bookmark-exit-hook-internal ()
2276   "Save bookmark state, if necessary, at Emacs exit time.
2277 This also runs `bookmark-exit-hooks'."
2278   (and
2279    (progn (run-hooks 'bookmark-exit-hooks) t)
2280    bookmark-alist
2281    (bookmark-time-to-save-p t)
2282    (bookmark-save)))
2283
2284 (add-hook 'kill-emacs-hook 'bookmark-exit-hook-internal)
2285
2286
2287 (run-hooks 'bookmark-load-hook)
2288
2289 (provide 'bookmark)
2290
2291 ;;; bookmark.el ends here