1;;; arc-mode.el --- simple editing of archives 2 3;; Copyright (C) 1995, 1997-1998, 2001-2021 Free Software Foundation, 4;; Inc. 5 6;; Author: Morten Welinder <terra@gnu.org> 7;; Keywords: files archives ms-dos editing major-mode 8;; Favorite-brand-of-beer: None, I hate beer. 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 3 of the License, or 15;; (at your option) 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. If not, see <https://www.gnu.org/licenses/>. 24 25;;; Commentary: 26 27;; NAMING: "arc" is short for "archive" and does not refer specifically 28;; to files whose name end in ".arc" 29;; 30;; This code does not decode any files internally, although it does 31;; understand the directory level of the archives. For this reason, 32;; you should expect this code to need more fiddling than tar-mode.el 33;; (although it at present has fewer bugs :-) In particular, I have 34;; not tested this under MS-DOS myself. 35;; ------------------------------------- 36;; INTERACTION: arc-mode.el should play together with 37;; 38;; * ange-ftp.el: Remote archives (i.e., ones that ange-ftp has brought 39;; to you) are handled by doing all updates on a local 40;; copy. When you make changes to a remote file the 41;; changes will first take effect when the archive buffer 42;; is saved. You will be warned about this. 43;; 44;; * dos-fns.el: (Part of Emacs 19). You get automatic ^M^J <--> ^J 45;; conversion. 46;; 47;; arc-mode.el does not work well with crypt++.el; for the archives as 48;; such this could be fixed (but wouldn't be useful) by declaring such 49;; archives to be "remote". For the members this is a general Emacs 50;; problem that 19.29's file formats may fix. 51;; ------------------------------------- 52;; ARCHIVE TYPES: Currently only the archives below are handled, but the 53;; structure for handling just about anything is in place. 54;; 55;; Arc Lzh Zip Zoo Rar 7z 56;; -------------------------------------------- 57;; View listing Intern Intern Intern Intern Y Y 58;; Extract member Y Y Y Y Y Y 59;; Save changed member Y Y Y Y N Y 60;; Add new member N N N N N N 61;; Delete member Y Y Y Y N Y 62;; Rename member Y Y N N N N 63;; Chmod - Y Y - N N 64;; Chown - Y - - N N 65;; Chgrp - Y - - N N 66;; 67;; Special thanks to Bill Brodie <wbrodie@panix.com> for very useful tips 68;; on the first released version of this package. 69;; 70;; This code is partly based on tar-mode.el from Emacs. 71;; ------------------------------------- 72;; ARCHIVE STRUCTURES: 73;; (This is mostly for myself.) 74;; 75;; ARC A series of (header,file). No interactions among members. 76;; 77;; LZH A series of (header,file). Headers are checksummed. No 78;; interaction among members. 79;; Headers come in three flavors called level 0, 1 and 2 headers. 80;; Level 2 header is free of DOS specific restrictions and most 81;; commonly used. Also level 1 and 2 headers consist of base 82;; and extension headers. For more details see 83;; http://homepage1.nifty.com/dangan/en/Content/Program/Java/jLHA/Notes/Notes.html 84;; http://www.osirusoft.com/joejared/lzhformat.html 85;; 86;; ZIP A series of (lheader,fil) followed by a "central directory" 87;; which is a series of (cheader) followed by an end-of- 88;; central-dir record possibly followed by junk. The e-o-c-d 89;; links to c-d. cheaders link to lheaders which are basically 90;; cut-down versions of the cheaders. 91;; 92;; ZOO An archive header followed by a series of (header,file). 93;; Each member header points to the next. The archive is 94;; terminated by a bogus header with a zero next link. 95;; ------------------------------------- 96;; HOOKS: `foo' means one of the supported archive types. 97;; 98;; archive-mode-hook 99;; archive-foo-mode-hook 100;; archive-extract-hook 101 102;;; Code: 103 104;; ------------------------------------------------------------------------- 105;;; Section: Configuration. 106 107(defgroup archive nil 108 "Simple editing of archives." 109 :group 'data) 110 111(defgroup archive-arc nil 112 "ARC-specific options to archive." 113 :group 'archive) 114 115(defgroup archive-lzh nil 116 "LZH-specific options to archive." 117 :group 'archive) 118 119(defgroup archive-zip nil 120 "ZIP-specific options to archive." 121 :group 'archive) 122 123(defgroup archive-zoo nil 124 "ZOO-specific options to archive." 125 :group 'archive) 126 127(defcustom archive-tmpdir 128 ;; make-temp-name is safe here because we use this name 129 ;; to create a directory. 130 (make-temp-name 131 (expand-file-name (if (eq system-type 'ms-dos) "ar" "archive.tmp") 132 temporary-file-directory)) 133 "Directory for temporary files made by `arc-mode.el'." 134 :type 'directory 135 :group 'archive) 136 137(defcustom archive-remote-regexp "^/[^/:]*[^/:.]:" 138 "Regexp recognizing archive files names that are not local. 139A non-local file is one whose file name is not proper outside Emacs. 140A local copy of the archive will be used when updating." 141 :type 'regexp 142 :group 'archive) 143 144(define-obsolete-variable-alias 'archive-extract-hooks 145 'archive-extract-hook "24.3") 146(defcustom archive-extract-hook nil 147 "Hook run when an archive member has been extracted." 148 :type 'hook 149 :group 'archive) 150 151(defcustom archive-visit-single-files nil 152 "If non-nil, opening an archive with a single file visits that file. 153If nil, visiting such an archive displays the archive summary." 154 :version "25.1" 155 :type '(choice (const :tag "Visit the single file" t) 156 (const :tag "Show the archive summary" nil)) 157 :group 'archive) 158;; ------------------------------ 159;; Arc archive configuration 160 161;; We always go via a local file since there seems to be no reliable way 162;; to extract to stdout without junk getting added. 163(defcustom archive-arc-extract 164 '("arc" "x") 165 "Program and its options to run in order to extract an arc file member. 166Extraction should happen to the current directory. Archive and member 167name will be added." 168 :type '(list (string :tag "Program") 169 (repeat :tag "Options" 170 :inline t 171 (string :format "%v"))) 172 :group 'archive-arc) 173 174(defcustom archive-arc-expunge 175 '("arc" "d") 176 "Program and its options to run in order to delete arc file members. 177Archive and member names will be added." 178 :type '(list (string :tag "Program") 179 (repeat :tag "Options" 180 :inline t 181 (string :format "%v"))) 182 :group 'archive-arc) 183 184(defcustom archive-arc-write-file-member 185 '("arc" "u") 186 "Program and its options to run in order to update an arc file member. 187Archive and member name will be added." 188 :type '(list (string :tag "Program") 189 (repeat :tag "Options" 190 :inline t 191 (string :format "%v"))) 192 :group 'archive-arc) 193;; ------------------------------ 194;; Lzh archive configuration 195 196(defcustom archive-lzh-extract 197 '("lha" "pq") 198 "Program and its options to run in order to extract an lzh file member. 199Extraction should happen to standard output. Archive and member name will 200be added." 201 :type '(list (string :tag "Program") 202 (repeat :tag "Options" 203 :inline t 204 (string :format "%v"))) 205 :group 'archive-lzh) 206 207(defcustom archive-lzh-expunge 208 '("lha" "d") 209 "Program and its options to run in order to delete lzh file members. 210Archive and member names will be added." 211 :type '(list (string :tag "Program") 212 (repeat :tag "Options" 213 :inline t 214 (string :format "%v"))) 215 :group 'archive-lzh) 216 217(defcustom archive-lzh-write-file-member 218 '("lha" "a") 219 "Program and its options to run in order to update an lzh file member. 220Archive and member name will be added." 221 :type '(list (string :tag "Program") 222 (repeat :tag "Options" 223 :inline t 224 (string :format "%v"))) 225 :group 'archive-lzh) 226;; ------------------------------ 227;; Zip archive configuration 228 229(defvar archive-7z-program (let ((7z (or (executable-find "7z") 230 (executable-find "7za")))) 231 (when 7z 232 (file-name-nondirectory 7z)))) 233 234(defcustom archive-zip-extract 235 (cond ((executable-find "unzip") '("unzip" "-qq" "-c")) 236 (archive-7z-program `(,archive-7z-program "x" "-so")) 237 ((executable-find "pkunzip") '("pkunzip" "-e" "-o-")) 238 (t '("unzip" "-qq" "-c"))) 239 "Program and its options to run in order to extract a zip file member. 240Extraction should happen to standard output. Archive and member name will 241be added." 242 :type '(list (string :tag "Program") 243 (repeat :tag "Options" 244 :inline t 245 (string :format "%v"))) 246 :group 'archive-zip) 247 248;; For several reasons the latter behavior is not desirable in general. 249;; (1) It uses more disk space. (2) Error checking is worse or non- 250;; existent. (3) It tends to do funny things with other systems' file 251;; names. 252 253(defcustom archive-zip-expunge 254 (cond ((executable-find "zip") '("zip" "-d" "-q")) 255 (archive-7z-program `(,archive-7z-program "d")) 256 ((executable-find "pkzip") '("pkzip" "-d")) 257 (t '("zip" "-d" "-q"))) 258 "Program and its options to run in order to delete zip file members. 259Archive and member names will be added." 260 :type '(list (string :tag "Program") 261 (repeat :tag "Options" 262 :inline t 263 (string :format "%v"))) 264 :group 'archive-zip) 265 266(defcustom archive-zip-update 267 (cond ((executable-find "zip") '("zip" "-q")) 268 (archive-7z-program `(,archive-7z-program "u")) 269 ((executable-find "pkzip") '("pkzip" "-u" "-P")) 270 (t '("zip" "-q"))) 271 "Program and its options to run in order to update a zip file member. 272Options should ensure that specified directory will be put into the zip 273file. Archive and member name will be added." 274 :type '(list (string :tag "Program") 275 (repeat :tag "Options" 276 :inline t 277 (string :format "%v"))) 278 :group 'archive-zip) 279 280(defcustom archive-zip-update-case 281 (cond ((executable-find "zip") '("zip" "-q" "-k")) 282 (archive-7z-program `(,archive-7z-program "u")) 283 ((executable-find "pkzip") '("pkzip" "-u" "-P")) 284 (t '("zip" "-q" "-k"))) 285 "Program and its options to run in order to update a case fiddled zip member. 286Options should ensure that specified directory will be put into the zip file. 287Archive and member name will be added." 288 :type '(list (string :tag "Program") 289 (repeat :tag "Options" 290 :inline t 291 (string :format "%v"))) 292 :group 'archive-zip) 293 294(declare-function msdos-long-file-names "msdos.c") 295(defcustom archive-zip-case-fiddle (and (eq system-type 'ms-dos) 296 (not (msdos-long-file-names))) 297 "If non-nil, then all-caps names of zip file members will be down-cased. 298This case fiddling will only happen for members created by a system 299that uses caseless file names. 300In addition, this flag forces members added/updated in the zip archive 301to be truncated to DOS 8+3 file-name restrictions." 302 :type 'boolean 303 :version "27.1" 304 :group 'archive-zip) 305;; ------------------------------ 306;; Zoo archive configuration 307 308(defcustom archive-zoo-extract 309 '("zoo" "xpq") 310 "Program and its options to run in order to extract a zoo file member. 311Extraction should happen to standard output. Archive and member name will 312be added." 313 :type '(list (string :tag "Program") 314 (repeat :tag "Options" 315 :inline t 316 (string :format "%v"))) 317 :group 'archive-zoo) 318 319(defcustom archive-zoo-expunge 320 '("zoo" "DqPP") 321 "Program and its options to run in order to delete zoo file members. 322Archive and member names will be added." 323 :type '(list (string :tag "Program") 324 (repeat :tag "Options" 325 :inline t 326 (string :format "%v"))) 327 :group 'archive-zoo) 328 329(defcustom archive-zoo-write-file-member 330 '("zoo" "a") 331 "Program and its options to run in order to update a zoo file member. 332Archive and member name will be added." 333 :type '(list (string :tag "Program") 334 (repeat :tag "Options" 335 :inline t 336 (string :format "%v"))) 337 :group 'archive-zoo) 338;; ------------------------------ 339;; 7z archive configuration 340 341(defcustom archive-7z-extract 342 `(,(or archive-7z-program "7z") "x" "-so") 343 "Program and its options to run in order to extract a 7z file member. 344Extraction should happen to standard output. Archive and member name will 345be added." 346 :version "24.1" 347 :type '(list (string :tag "Program") 348 (repeat :tag "Options" 349 :inline t 350 (string :format "%v"))) 351 :group 'archive-7z) 352 353(defcustom archive-7z-expunge 354 `(,(or archive-7z-program "7z") "d") 355 "Program and its options to run in order to delete 7z file members. 356Archive and member names will be added." 357 :version "24.1" 358 :type '(list (string :tag "Program") 359 (repeat :tag "Options" 360 :inline t 361 (string :format "%v"))) 362 :group 'archive-7z) 363 364(defcustom archive-7z-update 365 `(,(or archive-7z-program "7z") "u") 366 "Program and its options to run in order to update a 7z file member. 367Options should ensure that specified directory will be put into the 7z 368file. Archive and member name will be added." 369 :version "24.1" 370 :type '(list (string :tag "Program") 371 (repeat :tag "Options" 372 :inline t 373 (string :format "%v"))) 374 :group 'archive-7z) 375 376;; ------------------------------------------------------------------------- 377;;; Section: Variables 378 379(defvar archive-subtype nil "Symbol describing archive type.") 380(defvar archive-file-list-start nil "Position of first contents line.") 381(defvar archive-file-list-end nil "Position just after last contents line.") 382(defvar archive-proper-file-start nil "Position of real archive's start.") 383(defvar archive-read-only nil "Non-nil if the archive is read-only on disk.") 384(defvar archive-local-name nil "Name of local copy of remote archive.") 385(defvar archive-mode-map 386 (let ((map (make-keymap))) 387 (set-keymap-parent map special-mode-map) 388 (define-key map " " 'archive-next-line) 389 (define-key map "a" 'archive-alternate-display) 390 ;;(define-key map "c" 'archive-copy) 391 (define-key map "d" 'archive-flag-deleted) 392 (define-key map "\C-d" 'archive-flag-deleted) 393 (define-key map "e" 'archive-extract) 394 (define-key map "f" 'archive-extract) 395 (define-key map "\C-m" 'archive-extract) 396 (define-key map "m" 'archive-mark) 397 (define-key map "n" 'archive-next-line) 398 (define-key map "\C-n" 'archive-next-line) 399 (define-key map [down] 'archive-next-line) 400 (define-key map "o" 'archive-extract-other-window) 401 (define-key map "p" 'archive-previous-line) 402 (define-key map "\C-p" 'archive-previous-line) 403 (define-key map [?\S-\ ] 'archive-previous-line) 404 (define-key map [up] 'archive-previous-line) 405 (define-key map "r" 'archive-rename-entry) 406 (define-key map "u" 'archive-unflag) 407 (define-key map "\M-\C-?" 'archive-unmark-all-files) 408 (define-key map "v" 'archive-view) 409 (define-key map "x" 'archive-expunge) 410 (define-key map "\177" 'archive-unflag-backwards) 411 (define-key map "E" 'archive-extract-other-window) 412 (define-key map "M" 'archive-chmod-entry) 413 (define-key map "G" 'archive-chgrp-entry) 414 (define-key map "O" 'archive-chown-entry) 415 ;; Let mouse-1 follow the link. 416 (define-key map [follow-link] 'mouse-face) 417 418 (if (fboundp 'command-remapping) 419 (progn 420 (define-key map [remap advertised-undo] 'archive-undo) 421 (define-key map [remap undo] 'archive-undo)) 422 (substitute-key-definition 'advertised-undo 'archive-undo map global-map) 423 (substitute-key-definition 'undo 'archive-undo map global-map)) 424 425 (define-key map [mouse-2] 'archive-extract) 426 427 (define-key map [menu-bar immediate] 428 (cons "Immediate" (make-sparse-keymap "Immediate"))) 429 (define-key map [menu-bar immediate alternate] 430 '(menu-item "Alternate Display" archive-alternate-display 431 :enable (boundp (archive-name "alternate-display")) 432 :help "Toggle alternate file info display")) 433 (define-key map [menu-bar immediate view] 434 '(menu-item "View This File" archive-view 435 :help "Display file at cursor in View Mode")) 436 (define-key map [menu-bar immediate display] 437 '(menu-item "Display in Other Window" archive-display-other-window 438 :help "Display file at cursor in another window")) 439 (define-key map [menu-bar immediate find-file-other-window] 440 '(menu-item "Find in Other Window" archive-extract-other-window 441 :help "Edit file at cursor in another window")) 442 (define-key map [menu-bar immediate find-file] 443 '(menu-item "Find This File" archive-extract 444 :help "Extract file at cursor and edit it")) 445 446 (define-key map [menu-bar mark] 447 (cons "Mark" (make-sparse-keymap "Mark"))) 448 (define-key map [menu-bar mark unmark-all] 449 '(menu-item "Unmark All" archive-unmark-all-files 450 :help "Unmark all marked files")) 451 (define-key map [menu-bar mark deletion] 452 '(menu-item "Flag" archive-flag-deleted 453 :help "Flag file at cursor for deletion")) 454 (define-key map [menu-bar mark unmark] 455 '(menu-item "Unflag" archive-unflag 456 :help "Unmark file at cursor")) 457 (define-key map [menu-bar mark mark] 458 '(menu-item "Mark" archive-mark 459 :help "Mark file at cursor")) 460 461 (define-key map [menu-bar operate] 462 (cons "Operate" (make-sparse-keymap "Operate"))) 463 (define-key map [menu-bar operate chown] 464 '(menu-item "Change Owner..." archive-chown-entry 465 :enable (fboundp (archive-name "chown-entry")) 466 :help "Change owner of marked files")) 467 (define-key map [menu-bar operate chgrp] 468 '(menu-item "Change Group..." archive-chgrp-entry 469 :enable (fboundp (archive-name "chgrp-entry")) 470 :help "Change group ownership of marked files")) 471 (define-key map [menu-bar operate chmod] 472 '(menu-item "Change Mode..." archive-chmod-entry 473 :enable (fboundp (archive-name "chmod-entry")) 474 :help "Change mode (permissions) of marked files")) 475 (define-key map [menu-bar operate rename] 476 '(menu-item "Rename to..." archive-rename-entry 477 :enable (fboundp (archive-name "rename-entry")) 478 :help "Rename marked files")) 479 ;;(define-key map [menu-bar operate copy] 480 ;; '(menu-item "Copy to..." archive-copy)) 481 (define-key map [menu-bar operate expunge] 482 '(menu-item "Expunge Marked Files" archive-expunge 483 :help "Delete all flagged files from archive")) 484 map) 485 "Local keymap for archive mode listings.") 486(defvar archive-file-name-indent nil "Column where file names start.") 487 488(defvar archive-remote nil "Non-nil if the archive is outside file system.") 489(make-variable-buffer-local 'archive-remote) 490(put 'archive-remote 'permanent-local t) 491 492(defvar archive-member-coding-system nil "Coding-system of archive member.") 493(make-variable-buffer-local 'archive-member-coding-system) 494 495(defvar archive-alternate-display nil 496 "Non-nil when alternate information is shown.") 497(make-variable-buffer-local 'archive-alternate-display) 498(put 'archive-alternate-display 'permanent-local t) 499 500(defvar archive-superior-buffer nil "In archive members, points to archive.") 501(put 'archive-superior-buffer 'permanent-local t) 502 503(defvar archive-subfile-mode nil "Non-nil in archive member buffers.") 504(make-variable-buffer-local 'archive-subfile-mode) 505(put 'archive-subfile-mode 'permanent-local t) 506 507(defvar archive-file-name-coding-system nil) 508(make-variable-buffer-local 'archive-file-name-coding-system) 509(put 'archive-file-name-coding-system 'permanent-local t) 510 511(defvar archive-files nil 512 "Vector of file descriptors. 513Each descriptor is a vector of the form 514 [EXT-FILE-NAME INT-FILE-NAME CASE-FIDDLED MODE ...]") 515(make-variable-buffer-local 'archive-files) 516 517;; ------------------------------------------------------------------------- 518;;; Section: Support functions. 519 520(defun arc-insert-unibyte (&rest args) 521 "Like insert but don't make unibyte string and eight-bit char multibyte." 522 (dolist (elt args) 523 (if (integerp elt) 524 (insert (if (< elt 128) elt (decode-char 'eight-bit elt))) 525 (insert elt)))) 526 527(defsubst archive-name (suffix) 528 (intern (concat "archive-" (symbol-name archive-subtype) "-" suffix))) 529 530(defun archive-l-e (str &optional len) 531 "Convert little endian string/vector STR to integer. 532Alternatively, STR may be a buffer position in the current buffer 533in which case a second argument, length LEN, should be supplied." 534 (if (stringp str) 535 (setq len (length str)) 536 (setq str (buffer-substring str (+ str len)))) 537 (if (multibyte-string-p str) 538 (setq str (encode-coding-string str 'utf-8-emacs-unix))) 539 (let ((result 0) 540 (i 0)) 541 (while (< i len) 542 (setq i (1+ i) 543 result (+ (ash result 8) 544 (aref str (- len i))))) 545 result)) 546 547(defun archive-int-to-mode (mode) 548 "Turn an integer like 0700 (i.e., 448) into a mode string like -rwx------." 549 ;; FIXME: merge with tar-grind-file-mode. 550 (string 551 (if (zerop (logand 8192 mode)) 552 (if (zerop (logand 16384 mode)) ?- ?d) 553 ?c) ; completeness 554 (if (zerop (logand 256 mode)) ?- ?r) 555 (if (zerop (logand 128 mode)) ?- ?w) 556 (if (zerop (logand 64 mode)) 557 (if (zerop (logand 2048 mode)) ?- ?S) 558 (if (zerop (logand 2048 mode)) ?x ?s)) 559 (if (zerop (logand 32 mode)) ?- ?r) 560 (if (zerop (logand 16 mode)) ?- ?w) 561 (if (zerop (logand 8 mode)) 562 (if (zerop (logand 1024 mode)) ?- ?S) 563 (if (zerop (logand 1024 mode)) ?x ?s)) 564 (if (zerop (logand 4 mode)) ?- ?r) 565 (if (zerop (logand 2 mode)) ?- ?w) 566 (if (zerop (logand 1 mode)) ?- ?x))) 567 568(defun archive-calc-mode (oldmode newmode &optional error) 569 "From the integer OLDMODE and the string NEWMODE calculate a new file mode. 570NEWMODE may be an octal number including a leading zero in which case it 571will become the new mode.\n 572NEWMODE may also be a relative specification like \"og-rwx\" in which case 573OLDMODE will be modified accordingly just like chmod(2) would have done.\n 574If optional third argument ERROR is non-nil an error will be signaled if 575the mode is invalid. If ERROR is nil then nil will be returned." 576 (cond ((string-match "^0[0-7]*$" newmode) 577 (let ((result 0) 578 (len (length newmode)) 579 (i 1)) 580 (while (< i len) 581 (setq result (+ (ash result 3) (aref newmode i) (- ?0)) 582 i (1+ i))) 583 (logior (logand oldmode 65024) result))) 584 ((string-match "^\\([agou]+\\)\\([---+=]\\)\\([rwxst]+\\)$" newmode) 585 (let ((who 0) 586 (result oldmode) 587 (op (aref newmode (match-beginning 2))) 588 (bits 0) 589 (i (match-beginning 3))) 590 (while (< i (match-end 3)) 591 (let ((rwx (aref newmode i))) 592 (setq bits (logior bits (cond ((= rwx ?r) 292) 593 ((= rwx ?w) 146) 594 ((= rwx ?x) 73) 595 ((= rwx ?s) 3072) 596 ((= rwx ?t) 512))) 597 i (1+ i)))) 598 (while (< who (match-end 1)) 599 (let* ((whoc (aref newmode who)) 600 (whomask (cond ((= whoc ?a) 4095) 601 ((= whoc ?u) 1472) 602 ((= whoc ?g) 2104) 603 ((= whoc ?o) 7)))) 604 (if (= op ?=) 605 (setq result (logand result (lognot whomask)))) 606 (if (= op ?-) 607 (setq result (logand result (lognot (logand whomask bits)))) 608 (setq result (logior result (logand whomask bits))))) 609 (setq who (1+ who))) 610 result)) 611 (t 612 (if error 613 (error "Invalid mode specification: %s" newmode))))) 614 615(defun archive-dosdate (date) 616 "Stringify dos packed DATE record." 617 (let ((year (+ 1980 (logand (ash date -9) 127))) 618 (month (logand (ash date -5) 15)) 619 (day (logand date 31))) 620 (if (or (> month 12) (< month 1)) 621 "" 622 (format "%2d-%s-%d" 623 day 624 (aref ["Jan" "Feb" "Mar" "Apr" "May" "Jun" 625 "Jul" "Aug" "Sep" "Oct" "Nov" "Dec"] (1- month)) 626 year)))) 627 628(defun archive-dostime (time) 629 "Stringify dos packed TIME record." 630 (let ((hour (logand (ash time -11) 31)) 631 (minute (logand (ash time -5) 63)) 632 (second (* 2 (logand time 31)))) ; 2 seconds resolution 633 (format "%02d:%02d:%02d" hour minute second))) 634 635(defun archive-unixdate (low high) 636 "Stringify Unix (LOW HIGH) date." 637 (let* ((time (list high low)) 638 (str (current-time-string time))) 639 (format "%s-%s-%s" 640 (substring str 8 10) 641 (substring str 4 7) 642 (format-time-string "%Y" time)))) 643 644(defun archive-unixtime (low high) 645 "Stringify Unix (LOW HIGH) time." 646 (format-time-string "%H:%M:%S" (list high low))) 647 648(defun archive-get-lineno () 649 (if (>= (point) archive-file-list-start) 650 (count-lines archive-file-list-start 651 (line-beginning-position)) 652 0)) 653 654(defun archive-get-descr (&optional noerror) 655 "Return the descriptor vector for file at point. 656Does not signal an error if optional argument NOERROR is non-nil." 657 (let ((no (archive-get-lineno))) 658 (if (and (>= (point) archive-file-list-start) 659 (< no (length archive-files))) 660 (let ((item (aref archive-files no))) 661 (if (vectorp item) 662 item 663 (if (not noerror) 664 (error "Entry is not a regular member of the archive")))) 665 (if (not noerror) 666 (error "Line does not describe a member of the archive"))))) 667;; ------------------------------------------------------------------------- 668;;; Section: the mode definition 669 670;;;###autoload 671(defun archive-mode (&optional force) 672 "Major mode for viewing an archive file in a dired-like way. 673You can move around using the usual cursor motion commands. 674Letters no longer insert themselves. 675Type `e' to pull a file out of the archive and into its own buffer; 676or click mouse-2 on the file's line in the archive mode buffer. 677 678If you edit a sub-file of this archive (as with the `e' command) and 679save it, the contents of that buffer will be saved back into the 680archive. 681 682\\{archive-mode-map}" 683 ;; This is not interactive because you shouldn't be turning this 684 ;; mode on and off. You can corrupt things that way. 685 (if (zerop (buffer-size)) 686 ;; At present we cannot create archives from scratch 687 (funcall (or (default-value 'major-mode) 'fundamental-mode)) 688 (if (and (not force) archive-files) nil 689 (kill-all-local-variables) 690 (let* ((type (archive-find-type)) 691 (typename (capitalize (symbol-name type)))) 692 (make-local-variable 'archive-subtype) 693 (setq archive-subtype type) 694 695 ;; Buffer contains treated image of file before the file contents 696 (make-local-variable 'revert-buffer-function) 697 (setq revert-buffer-function 'archive-mode-revert) 698 (auto-save-mode 0) 699 700 (add-hook 'write-contents-functions 'archive-write-file nil t) 701 702 (make-local-variable 'require-final-newline) 703 (setq require-final-newline nil) 704 (make-local-variable 'local-enable-local-variables) 705 (setq local-enable-local-variables nil) 706 707 ;; Prevent loss of data when saving the file. 708 (make-local-variable 'file-precious-flag) 709 (setq file-precious-flag t) 710 711 (make-local-variable 'archive-read-only) 712 ;; Archives which are inside other archives and whose 713 ;; names are invalid for this OS, can't be written. 714 (setq archive-read-only 715 (or (not (file-writable-p (buffer-file-name))) 716 (and archive-subfile-mode 717 (string-match file-name-invalid-regexp 718 (aref archive-subfile-mode 0))))) 719 720 ;; Should we use a local copy when accessing from outside Emacs? 721 (make-local-variable 'archive-local-name) 722 723 ;; An archive can contain another archive whose name is invalid 724 ;; on local filesystem. Treat such archives as remote. 725 (or archive-remote 726 (setq archive-remote 727 (or (string-match archive-remote-regexp (buffer-file-name)) 728 (string-match file-name-invalid-regexp 729 (buffer-file-name))))) 730 731 (setq major-mode 'archive-mode) 732 (setq mode-name (concat typename "-Archive")) 733 ;; Run archive-foo-mode-hook and archive-mode-hook 734 (run-mode-hooks (archive-name "mode-hook") 'archive-mode-hook) 735 (use-local-map archive-mode-map)) 736 737 (make-local-variable 'archive-proper-file-start) 738 (make-local-variable 'archive-file-list-start) 739 (make-local-variable 'archive-file-list-end) 740 (make-local-variable 'archive-file-name-indent) 741 (setq archive-file-name-coding-system 742 (or file-name-coding-system 743 default-file-name-coding-system 744 locale-coding-system)) 745 (set-buffer-multibyte 'to) 746 (archive-summarize nil) 747 (setq buffer-read-only t) 748 (when (and archive-visit-single-files 749 auto-compression-mode 750 (= (length archive-files) 1)) 751 (rename-buffer (concat " " (buffer-name))) 752 (archive-extract))))) 753 754;; Archive mode is suitable only for specially formatted data. 755(put 'archive-mode 'mode-class 'special) 756 757(let ((item1 '(archive-subfile-mode " Archive"))) 758 (or (member item1 minor-mode-alist) 759 (setq minor-mode-alist (cons item1 minor-mode-alist)))) 760;; ------------------------------------------------------------------------- 761(defun archive-find-type () 762 (widen) 763 (goto-char (point-min)) 764 ;; The funny [] here make it unlikely that the .elc file will be treated 765 ;; as an archive by other software. 766 (let (case-fold-search) 767 (cond ((looking-at "\\(PK00\\)?[P]K\003\004") 'zip) 768 ((looking-at "..-l[hz][0-9ds]-") 'lzh) 769 ((looking-at "....................[\334]\247\304\375") 'zoo) 770 ((and (looking-at "\C-z") ; signature too simple, IMHO 771 (string-match "\\.[aA][rR][cC]\\'" 772 (or buffer-file-name (buffer-name)))) 773 'arc) 774 ;; This pattern modeled on the BSD/GNU+Linux `file' command. 775 ;; Have seen capital "LHA's", and file has lower case "LHa's" too. 776 ;; Note this regexp is also in archive-exe-p. 777 ((looking-at "MZ\\(.\\|\n\\)\\{34\\}LH[aA]'s SFX ") 'lzh-exe) 778 ((looking-at "Rar!") 'rar) 779 ((looking-at "!<arch>\n") 'ar) 780 ((and (looking-at "MZ") 781 (re-search-forward "Rar!" (+ (point) 100000) t)) 782 'rar-exe) 783 ((looking-at "7z\274\257\047\034") '7z) 784 (t (error "Buffer format not recognized"))))) 785;; ------------------------------------------------------------------------- 786 787(defun archive-desummarize () 788 (let ((inhibit-read-only t) 789 (modified (buffer-modified-p))) 790 (widen) 791 (delete-region (point-min) archive-proper-file-start) 792 (restore-buffer-modified-p modified))) 793 794 795(defun archive-summarize (&optional shut-up) 796 "Parse the contents of the archive file in the current buffer. 797Place a dired-like listing on the front; 798then narrow to it, so that only that listing 799is visible (and the real data of the buffer is hidden). 800Optional argument SHUT-UP, if non-nil, means don't print messages 801when parsing the archive." 802 (widen) 803 (let ((create-lockfiles nil) ; avoid changing dir mtime by lock_file 804 (inhibit-read-only t)) 805 (setq archive-proper-file-start (copy-marker (point-min) t)) 806 (set (make-local-variable 'change-major-mode-hook) 'archive-desummarize) 807 (or shut-up 808 (message "Parsing archive file...")) 809 (buffer-disable-undo (current-buffer)) 810 (setq archive-files (funcall (archive-name "summarize"))) 811 (or shut-up 812 (message "Parsing archive file...done.")) 813 (setq archive-proper-file-start (point-marker)) 814 (narrow-to-region (point-min) (point)) 815 (set-buffer-modified-p nil) 816 (buffer-enable-undo)) 817 (goto-char archive-file-list-start) 818 (archive-next-line 0)) 819 820(defun archive-resummarize () 821 "Recreate the contents listing of an archive." 822 (let ((no (archive-get-lineno))) 823 (archive-desummarize) 824 (archive-summarize t) 825 (goto-char archive-file-list-start) 826 (archive-next-line no))) 827 828(defun archive-summarize-files (files) 829 "Insert a description of a list of files annotated with proper mouse face." 830 (setq archive-file-list-start (point-marker)) 831 (setq archive-file-name-indent (if files (aref (car files) 1) 0)) 832 ;; We don't want to do an insert for each element since that takes too 833 ;; long when the archive -- which has to be moved in memory -- is large. 834 (insert 835 (apply 836 #'concat 837 (mapcar 838 (lambda (fil) 839 ;; Using `concat' here copies the text also, so we can add 840 ;; properties without problems. 841 (let ((text (concat (aref fil 0) "\n"))) 842 (add-text-properties 843 (aref fil 1) (aref fil 2) 844 '(mouse-face highlight 845 help-echo "mouse-2: extract this file into a buffer") 846 text) 847 text)) 848 files))) 849 (setq archive-file-list-end (point-marker))) 850 851(defun archive-alternate-display () 852 "Toggle alternative display. 853To avoid very long lines archive mode does not show all information. 854This function changes the set of information shown for each files." 855 (interactive) 856 (setq archive-alternate-display (not archive-alternate-display)) 857 (archive-resummarize)) 858;; ------------------------------------------------------------------------- 859;;; Section: Local archive copy handling 860 861(defun archive-unique-fname (fname dir) 862 "Make sure a file FNAME can be created uniquely in directory DIR. 863 864If FNAME can be uniquely created in DIR, it is returned unaltered. 865If FNAME is something our underlying filesystem can't grok, or if another 866file by that name already exists in DIR, a unique new name is generated 867using `make-temp-file', and the generated name is returned." 868 (let ((fullname (expand-file-name fname dir)) 869 (alien (string-match file-name-invalid-regexp fname)) 870 (tmpfile 871 (expand-file-name 872 (if (if (fboundp 'msdos-long-file-names) 873 (not (msdos-long-file-names))) 874 "am" 875 "arc-mode.") 876 dir))) 877 (if (or alien (file-exists-p fullname)) 878 (progn 879 ;; Make sure all the leading directories in 880 ;; archive-local-name exist under archive-tmpdir, so that 881 ;; the directory structure recorded in the archive is 882 ;; reconstructed in the temporary directory. 883 (make-directory (file-name-directory tmpfile) t) 884 (make-temp-file tmpfile)) 885 ;; Make sure all the leading directories in `fullname' exist 886 ;; under archive-tmpdir. This is necessary for nested archives 887 ;; (`archive-extract' sets `archive-remote' to t in case 888 ;; an archive occurs inside another archive). 889 (make-directory (file-name-directory fullname) t) 890 fullname))) 891 892(defun archive-maybe-copy (archive) 893 (let ((coding-system-for-write 'no-conversion)) 894 (if archive-remote 895 (let ((start (point-max)) 896 ;; Sometimes ARCHIVE is invalid while its actual name, as 897 ;; recorded in its parent archive, is not. For example, an 898 ;; archive bar.zip inside another archive foo.zip gets a name 899 ;; "foo.zip:bar.zip", which is invalid on DOS/Windows. 900 ;; So use the actual name if available. 901 (archive-name 902 (or (and archive-subfile-mode (aref archive-subfile-mode 0)) 903 archive))) 904 (setq archive-local-name 905 (archive-unique-fname archive-name archive-tmpdir)) 906 (save-restriction 907 (widen) 908 (write-region start (point-max) archive-local-name nil 'nomessage)) 909 archive-local-name) 910 (if (buffer-modified-p) (save-buffer)) 911 archive))) 912 913(defun archive-maybe-update (unchanged) 914 (if archive-remote 915 (let ((name archive-local-name) 916 (modified (buffer-modified-p)) 917 (coding-system-for-read 'no-conversion) 918 (lno (archive-get-lineno)) 919 (inhibit-read-only t)) 920 (if unchanged nil 921 (setq archive-files nil) 922 (erase-buffer) 923 (insert-file-contents name) 924 (archive-mode t) 925 (goto-char archive-file-list-start) 926 (archive-next-line lno)) 927 (archive-delete-local name) 928 (if (not unchanged) 929 (message 930 "Buffer `%s' must be saved for changes to take effect" 931 (buffer-name (current-buffer)))) 932 (set-buffer-modified-p (or modified (not unchanged)))))) 933 934(defun archive-delete-local (name) 935 "Delete file NAME and its parents up to and including `archive-tmpdir'." 936 (let ((again t) 937 (top (directory-file-name (file-name-as-directory archive-tmpdir)))) 938 (condition-case nil 939 (delete-file name) 940 (error nil)) 941 (while again 942 (setq name (directory-file-name (file-name-directory name))) 943 (condition-case nil 944 (delete-directory name) 945 (error nil)) 946 (if (string= name top) (setq again nil))))) 947;; ------------------------------------------------------------------------- 948;;; Section: Member extraction 949 950(defun archive-try-jka-compr () 951 (when (and auto-compression-mode 952 (jka-compr-get-compression-info buffer-file-name)) 953 (let* ((basename (file-name-nondirectory buffer-file-name)) 954 (tmpname (if (string-match ":\\([^:]+\\)\\'" basename) 955 (match-string 1 basename) basename)) 956 (tmpfile (make-temp-file (file-name-sans-extension tmpname) 957 nil 958 (file-name-extension tmpname 'period)))) 959 (unwind-protect 960 (progn 961 (let ((coding-system-for-write 'no-conversion) 962 ;; Don't re-compress this data just before decompressing it. 963 (jka-compr-inhibit t)) 964 (write-region (point-min) (point-max) tmpfile nil 'quiet)) 965 (erase-buffer) 966 (set-buffer-multibyte t) 967 (insert-file-contents tmpfile)) 968 (delete-file tmpfile))))) 969 970(defun archive-file-name-handler (op &rest args) 971 (or (eq op 'file-exists-p) 972 (let ((file-name-handler-alist nil)) 973 (apply op args)))) 974 975(defun archive-set-buffer-as-visiting-file (filename) 976 "Set the current buffer as if it were visiting FILENAME." 977 (save-excursion 978 (goto-char (point-min)) 979 (let ((buffer-undo-list t) 980 (coding 981 (or coding-system-for-read 982 (and set-auto-coding-function 983 (save-excursion 984 (funcall set-auto-coding-function 985 filename (- (point-max) (point-min))))) 986 ;; The following let-binding of file-name-handler-alist forces 987 ;; find-file-not-found-set-buffer-file-coding-system to ignore 988 ;; the file's name (see dos-w32.el). 989 (let ((file-name-handler-alist 990 '(("" . archive-file-name-handler)))) 991 (car (find-operation-coding-system 992 'insert-file-contents 993 (cons filename (current-buffer)) t)))))) 994 (unless (or coding-system-for-read 995 enable-multibyte-characters) 996 (setq coding 997 (coding-system-change-text-conversion coding 'raw-text))) 998 (unless (memq coding '(nil no-conversion)) 999 (decode-coding-region (point-min) (point-max) coding) 1000 (setq last-coding-system-used coding)) 1001 (set-buffer-modified-p nil) 1002 (kill-local-variable 'buffer-file-coding-system) 1003 (after-insert-file-set-coding (- (point-max) (point-min)))))) 1004 1005(defun archive-extract (&optional other-window-p event) 1006 "In archive mode, extract this entry of the archive into its own buffer." 1007 (interactive (list nil last-input-event)) 1008 (if event (posn-set-point (event-end event))) 1009 (let* ((view-p (eq other-window-p 'view)) 1010 (descr (archive-get-descr)) 1011 (ename (aref descr 0)) 1012 (iname (aref descr 1)) 1013 (archive-buffer (current-buffer)) 1014 (arcdir default-directory) 1015 (archive (buffer-file-name)) 1016 (arcname (file-name-nondirectory archive)) 1017 (bufname (concat (file-name-nondirectory iname) " (" arcname ")")) 1018 (extractor (archive-name "extract")) 1019 ;; Members with file names which aren't valid for the 1020 ;; underlying filesystem, are treated as read-only. 1021 (read-only-p (or archive-read-only 1022 view-p 1023 (string-match file-name-invalid-regexp ename))) 1024 (arcfilename (expand-file-name (concat arcname ":" iname))) 1025 (buffer (get-buffer bufname)) 1026 (just-created nil) 1027 (file-name-coding archive-file-name-coding-system)) 1028 (if (and buffer 1029 (string= (buffer-file-name buffer) arcfilename)) 1030 nil 1031 (setq archive (archive-maybe-copy archive)) 1032 (setq bufname (generate-new-buffer-name bufname)) 1033 (setq buffer (get-buffer-create bufname)) 1034 (setq just-created t) 1035 (with-current-buffer buffer 1036 (setq buffer-file-name arcfilename) 1037 (setq buffer-file-truename 1038 (abbreviate-file-name buffer-file-name)) 1039 ;; Set the default-directory to the dir of the superior buffer. 1040 (setq default-directory arcdir) 1041 (make-local-variable 'archive-superior-buffer) 1042 (setq archive-superior-buffer archive-buffer) 1043 (add-hook 'write-file-functions #'archive-write-file-member nil t) 1044 (setq archive-subfile-mode descr) 1045 (setq archive-file-name-coding-system file-name-coding) 1046 (if (and 1047 (null 1048 (let (;; We may have to encode the file name argument for 1049 ;; external programs. 1050 (coding-system-for-write 1051 (and enable-multibyte-characters 1052 archive-file-name-coding-system)) 1053 ;; We read an archive member by no-conversion at 1054 ;; first, then decode appropriately by calling 1055 ;; archive-set-buffer-as-visiting-file later. 1056 (coding-system-for-read 'no-conversion) 1057 ;; Avoid changing dir mtime by lock_file 1058 (create-lockfiles nil)) 1059 (condition-case err 1060 (if (fboundp extractor) 1061 (funcall extractor archive ename) 1062 (archive-*-extract archive ename 1063 (symbol-value extractor))) 1064 (error 1065 (ding (message "%s" (error-message-string err))) 1066 nil)))) 1067 just-created) 1068 (progn 1069 (set-buffer-modified-p nil) 1070 (kill-buffer buffer)) 1071 (archive-try-jka-compr) ;Pretty ugly hack :-( 1072 (archive-set-buffer-as-visiting-file ename) 1073 (goto-char (point-min)) 1074 (rename-buffer bufname) 1075 (setq buffer-read-only read-only-p) 1076 (setq buffer-undo-list nil) 1077 (set-buffer-modified-p nil) 1078 (setq buffer-saved-size (buffer-size)) 1079 (normal-mode) 1080 ;; Just in case an archive occurs inside another archive. 1081 (when (derived-mode-p 'archive-mode) 1082 (setq archive-remote t) 1083 (if read-only-p (setq archive-read-only t)) 1084 ;; We will write out the archive ourselves if it is 1085 ;; part of another archive. 1086 (remove-hook 'write-contents-functions #'archive-write-file t)) 1087 (run-hooks 'archive-extract-hook) 1088 (if archive-read-only 1089 (message "Note: altering this archive is not implemented.")))) 1090 (archive-maybe-update t)) 1091 (or (not (buffer-name buffer)) 1092 (cond 1093 (view-p 1094 (view-buffer buffer (and just-created 'kill-buffer-if-not-modified))) 1095 ((eq other-window-p 'display) (display-buffer buffer)) 1096 (other-window-p (switch-to-buffer-other-window buffer)) 1097 (t (switch-to-buffer buffer)))))) 1098 1099(defun archive-*-extract (archive name command) 1100 (let* ((default-directory (file-name-as-directory archive-tmpdir)) 1101 (tmpfile (expand-file-name (file-name-nondirectory name) 1102 default-directory)) 1103 exit-status success) 1104 (make-directory (directory-file-name default-directory) t) 1105 (setq exit-status 1106 (apply #'call-process 1107 (car command) 1108 nil 1109 nil 1110 nil 1111 (append (cdr command) (list archive name)))) 1112 (cond ((and (numberp exit-status) (zerop exit-status)) 1113 (if (not (file-exists-p tmpfile)) 1114 (ding (message "`%s': no such file or directory" tmpfile)) 1115 (insert-file-contents tmpfile) 1116 (setq success t))) 1117 ((numberp exit-status) 1118 (ding 1119 (message "`%s' exited with status %d" (car command) exit-status))) 1120 ((stringp exit-status) 1121 (ding (message "`%s' aborted: %s" (car command) exit-status))) 1122 (t 1123 (ding (message "`%s' failed" (car command))))) 1124 (archive-delete-local tmpfile) 1125 success)) 1126 1127(defun archive-extract-by-stdout (archive name command &optional stderr-test) 1128 (let ((stderr-file (make-temp-file "arc-stderr"))) 1129 (unwind-protect 1130 (prog1 1131 (apply #'call-process 1132 (car command) 1133 nil 1134 (if stderr-file (list t stderr-file) t) 1135 nil 1136 (append (cdr command) (list archive name))) 1137 (with-temp-buffer 1138 (insert-file-contents stderr-file) 1139 (goto-char (point-min)) 1140 (when (if (stringp stderr-test) 1141 (not (re-search-forward stderr-test nil t)) 1142 (> (buffer-size) 0)) 1143 (message "%s" (buffer-string))))) 1144 (if (file-exists-p stderr-file) 1145 (delete-file stderr-file))))) 1146 1147(defun archive-extract-by-file (archive name command &optional stdout-test) 1148 (let ((dest (make-temp-file "arc-dir" 'dir)) 1149 (stdout-file (make-temp-file "arc-stdout"))) 1150 (unwind-protect 1151 (prog1 1152 (apply #'call-process 1153 (car command) 1154 nil 1155 `(:file ,stdout-file) 1156 nil 1157 `(,archive ,name ,@(cdr command) ,dest)) 1158 (with-temp-buffer 1159 (insert-file-contents stdout-file) 1160 (goto-char (point-min)) 1161 (when (if (stringp stdout-test) 1162 (not (re-search-forward stdout-test nil t)) 1163 (> (buffer-size) 0)) 1164 (message "%s" (buffer-string)))) 1165 (if (file-exists-p (expand-file-name name dest)) 1166 (insert-file-contents-literally (expand-file-name name dest)))) 1167 (if (file-exists-p stdout-file) 1168 (delete-file stdout-file)) 1169 (if (file-exists-p (expand-file-name name dest)) 1170 (delete-file (expand-file-name name dest))) 1171 (while (file-name-directory name) 1172 (setq name (directory-file-name (file-name-directory name))) 1173 (when (file-directory-p (expand-file-name name dest)) 1174 (delete-directory (expand-file-name name dest)))) 1175 (when (file-directory-p dest) 1176 (delete-directory dest))))) 1177 1178(defun archive-extract-other-window () 1179 "In archive mode, find this member in another window." 1180 (interactive) 1181 (archive-extract t)) 1182 1183(defun archive-display-other-window () 1184 "In archive mode, display this member in another window." 1185 (interactive) 1186 (archive-extract 'display)) 1187 1188(defun archive-view () 1189 "In archive mode, view the member on this line." 1190 (interactive) 1191 (archive-extract 'view)) 1192 1193(defun archive-add-new-member (arcbuf name) 1194 "Add current buffer to the archive in ARCBUF naming it NAME." 1195 (interactive 1196 (list (get-buffer 1197 (read-buffer "Buffer containing archive: " 1198 ;; Find first archive buffer and suggest that 1199 (let ((bufs (buffer-list))) 1200 (while (and bufs 1201 (not (with-current-buffer (car bufs) 1202 (derived-mode-p 'archive-mode)))) 1203 (setq bufs (cdr bufs))) 1204 (if bufs 1205 (car bufs) 1206 (error "There are no archive buffers"))) 1207 t)) 1208 (read-string "File name in archive: " 1209 (if buffer-file-name 1210 (file-name-nondirectory buffer-file-name) 1211 "")))) 1212 (with-current-buffer arcbuf 1213 (or (derived-mode-p 'archive-mode) 1214 (error "Buffer is not an archive buffer")) 1215 (if archive-read-only 1216 (error "Archive is read-only"))) 1217 (if (eq arcbuf (current-buffer)) 1218 (error "An archive buffer cannot be added to itself")) 1219 (if (string= name "") 1220 (error "Archive members may not be given empty names")) 1221 (let ((func (with-current-buffer arcbuf 1222 (archive-name "add-new-member"))) 1223 (membuf (current-buffer))) 1224 (if (fboundp func) 1225 (with-current-buffer arcbuf 1226 (funcall func buffer-file-name membuf name)) 1227 (error "Adding a new member is not supported for this archive type")))) 1228;; ------------------------------------------------------------------------- 1229;;; Section: IO stuff 1230 1231(defun archive-write-file-member () 1232 (save-excursion 1233 (save-restriction 1234 (message "Updating archive...") 1235 (widen) 1236 (let ((writer (with-current-buffer archive-superior-buffer 1237 (archive-name "write-file-member"))) 1238 (archive (with-current-buffer archive-superior-buffer 1239 (archive-maybe-copy (buffer-file-name))))) 1240 (if (fboundp writer) 1241 (funcall writer archive archive-subfile-mode) 1242 (archive-*-write-file-member archive 1243 archive-subfile-mode 1244 (symbol-value writer))) 1245 (set-buffer-modified-p nil) 1246 (message "Updating archive...done")) 1247 (set-buffer archive-superior-buffer) 1248 (if (not archive-remote) (revert-buffer) (archive-maybe-update nil)))) 1249 ;; Restore the value of last-coding-system-used, so that basic-save-buffer 1250 ;; won't reset the coding-system of this archive member. 1251 (if (local-variable-p 'archive-member-coding-system) 1252 (setq last-coding-system-used archive-member-coding-system)) 1253 t) 1254 1255(defun archive-*-write-file-member (archive descr command) 1256 (let* ((ename (aref descr 0)) 1257 (tmpfile (expand-file-name ename archive-tmpdir)) 1258 (top (directory-file-name (file-name-as-directory archive-tmpdir))) 1259 (default-directory (file-name-as-directory top))) 1260 (unwind-protect 1261 (progn 1262 (make-directory (file-name-directory tmpfile) t) 1263 ;; If the member is itself an archive, write it without 1264 ;; the dired-like listing we created. 1265 (if (eq major-mode 'archive-mode) 1266 (archive-write-file tmpfile) 1267 (write-region nil nil tmpfile nil 'nomessage)) 1268 ;; basic-save-buffer needs last-coding-system-used to have 1269 ;; the value used to write the file, so save it before any 1270 ;; further processing clobbers it (we restore it in 1271 ;; archive-write-file-member, above). 1272 (setq archive-member-coding-system last-coding-system-used) 1273 (if (aref descr 3) 1274 ;; Set the file modes, but make sure we can read it. 1275 (set-file-modes tmpfile (logior ?\400 (aref descr 3)))) 1276 (setq ename 1277 (encode-coding-string ename archive-file-name-coding-system)) 1278 (let* ((coding-system-for-write 'no-conversion) 1279 (exitcode (apply #'call-process 1280 (car command) 1281 nil 1282 nil 1283 nil 1284 (append (cdr command) 1285 (list archive ename))))) 1286 (or (zerop exitcode) 1287 (error "Updating was unsuccessful (%S)" exitcode)))) 1288 (archive-delete-local tmpfile)))) 1289 1290(defun archive-write-file (&optional file) 1291 (save-excursion 1292 (let ((coding-system-for-write 'no-conversion)) 1293 (write-region archive-proper-file-start (point-max) 1294 (or file buffer-file-name) nil t) 1295 (set-buffer-modified-p nil)) 1296 t)) 1297;; ------------------------------------------------------------------------- 1298;;; Section: Marking and unmarking. 1299 1300(defun archive-flag-deleted (p &optional type) 1301 "In archive mode, mark this member to be deleted from the archive. 1302With a prefix argument, mark that many files." 1303 (interactive "p") 1304 (or type (setq type ?D)) 1305 (beginning-of-line) 1306 (let ((sign (if (>= p 0) +1 -1)) 1307 (modified (buffer-modified-p)) 1308 (inhibit-read-only t)) 1309 (while (not (zerop p)) 1310 (if (archive-get-descr t) 1311 (progn 1312 (delete-char 1) 1313 (insert type))) 1314 (forward-line sign) 1315 (setq p (- p sign))) 1316 (restore-buffer-modified-p modified)) 1317 (archive-next-line 0)) 1318 1319(defun archive-unflag (p) 1320 "In archive mode, un-mark this member if it is marked to be deleted. 1321With a prefix argument, un-mark that many files forward." 1322 (interactive "p") 1323 (archive-flag-deleted p ?\s)) 1324 1325(defun archive-unflag-backwards (p) 1326 "In archive mode, un-mark this member if it is marked to be deleted. 1327With a prefix argument, un-mark that many members backward." 1328 (interactive "p") 1329 (archive-flag-deleted (- p) ?\s)) 1330 1331(defun archive-unmark-all-files () 1332 "Remove all marks." 1333 (interactive) 1334 (let ((modified (buffer-modified-p)) 1335 (inhibit-read-only t)) 1336 (save-excursion 1337 (goto-char archive-file-list-start) 1338 (while (< (point) archive-file-list-end) 1339 (or (= (following-char) ?\s) 1340 (progn (delete-char 1) (insert ?\s))) 1341 (forward-line 1))) 1342 (restore-buffer-modified-p modified))) 1343 1344(defun archive-mark (p) 1345 "In archive mode, mark this member for group operations. 1346With a prefix argument, mark that many members. 1347Use \\[archive-unmark-all-files] to remove all marks." 1348 (interactive "p") 1349 (archive-flag-deleted p ?*)) 1350 1351(defun archive-get-marked (mark &optional default) 1352 (let (files) 1353 (save-excursion 1354 (goto-char archive-file-list-start) 1355 (while (< (point) archive-file-list-end) 1356 (if (= (following-char) mark) 1357 (setq files (cons (archive-get-descr) files))) 1358 (forward-line 1))) 1359 (or (nreverse files) 1360 (and default 1361 (list (archive-get-descr)))))) 1362;; ------------------------------------------------------------------------- 1363;;; Section: Operate 1364 1365(defun archive-next-line (p) 1366 (interactive "p") 1367 (forward-line p) 1368 (or (eobp) 1369 (forward-char archive-file-name-indent))) 1370 1371(defun archive-previous-line (p) 1372 (interactive "p") 1373 (archive-next-line (- p))) 1374 1375(defun archive-chmod-entry (new-mode) 1376 "Change the protection bits associated with all marked or this member. 1377The new protection bits can either be specified as an octal number or 1378as a relative change like \"g+rw\" as for chmod(2)." 1379 (interactive "sNew mode (octal or relative): ") 1380 (if archive-read-only (error "Archive is read-only")) 1381 (let ((func (archive-name "chmod-entry"))) 1382 (if (fboundp func) 1383 (progn 1384 (funcall func new-mode (archive-get-marked ?* t)) 1385 (archive-resummarize)) 1386 (error "Setting mode bits is not supported for this archive type")))) 1387 1388(defun archive-chown-entry (new-uid) 1389 "Change the owner of all marked or this member." 1390 (interactive "nNew uid: ") 1391 (if archive-read-only (error "Archive is read-only")) 1392 (let ((func (archive-name "chown-entry"))) 1393 (if (fboundp func) 1394 (progn 1395 (funcall func new-uid (archive-get-marked ?* t)) 1396 (archive-resummarize)) 1397 (error "Setting owner is not supported for this archive type")))) 1398 1399(defun archive-chgrp-entry (new-gid) 1400 "Change the group of all marked or this member." 1401 (interactive "nNew gid: ") 1402 (if archive-read-only (error "Archive is read-only")) 1403 (let ((func (archive-name "chgrp-entry"))) 1404 (if (fboundp func) 1405 (progn 1406 (funcall func new-gid (archive-get-marked ?* t)) 1407 (archive-resummarize)) 1408 (error "Setting group is not supported for this archive type")))) 1409 1410(defun archive-expunge () 1411 "Do the flagged deletions." 1412 (interactive) 1413 (let (files) 1414 (save-excursion 1415 (goto-char archive-file-list-start) 1416 (while (< (point) archive-file-list-end) 1417 (if (= (following-char) ?D) 1418 (setq files (cons (aref (archive-get-descr) 0) files))) 1419 (forward-line 1))) 1420 (setq files (nreverse files)) 1421 (and files 1422 (or (not archive-read-only) 1423 (error "Archive is read-only")) 1424 (or (yes-or-no-p (format "Really delete %d member%s? " 1425 (length files) 1426 (if (null (cdr files)) "" "s"))) 1427 (error "Operation aborted")) 1428 (let ((archive (archive-maybe-copy (buffer-file-name))) 1429 (expunger (archive-name "expunge"))) 1430 (if (fboundp expunger) 1431 (funcall expunger archive files) 1432 (archive-*-expunge archive files (symbol-value expunger))) 1433 (archive-maybe-update nil) 1434 (if archive-remote 1435 (archive-resummarize) 1436 (revert-buffer)))))) 1437 1438(defun archive-*-expunge (archive files command) 1439 (apply #'call-process 1440 (car command) 1441 nil 1442 nil 1443 nil 1444 (append (cdr command) (cons archive files)))) 1445 1446(defun archive-rename-entry (newname) 1447 "Change the name associated with this entry in the archive file." 1448 (interactive "sNew name: ") 1449 (if archive-read-only (error "Archive is read-only")) 1450 (if (string= newname "") 1451 (error "Archive members may not be given empty names")) 1452 (let ((func (archive-name "rename-entry")) 1453 (descr (archive-get-descr))) 1454 (if (fboundp func) 1455 (progn 1456 (funcall func 1457 (encode-coding-string newname 1458 archive-file-name-coding-system) 1459 descr) 1460 (archive-resummarize)) 1461 (error "Renaming is not supported for this archive type")))) 1462 1463;; Revert the buffer and recompute the dired-like listing. 1464(defun archive-mode-revert (&optional _no-auto-save _no-confirm) 1465 (let ((no (archive-get-lineno))) 1466 (setq archive-files nil) 1467 (let ((revert-buffer-function nil) 1468 (coding-system-for-read 'no-conversion)) 1469 (revert-buffer t t)) 1470 (archive-mode) 1471 (goto-char archive-file-list-start) 1472 (archive-next-line no))) 1473 1474(defun archive-undo () 1475 "Undo in an archive buffer. 1476This doesn't recover lost files, it just undoes changes in the buffer itself." 1477 (interactive) 1478 (let ((inhibit-read-only t)) 1479 (undo))) 1480;; ------------------------------------------------------------------------- 1481;;; Section: Arc Archives 1482 1483(defun archive-arc-summarize () 1484 (let ((p 1) 1485 (totalsize 0) 1486 (maxlen 8) 1487 files 1488 visual) 1489 (while (and (< (+ p 29) (point-max)) 1490 (= (get-byte p) ?\C-z) 1491 (> (get-byte (1+ p)) 0)) 1492 (let* ((namefld (buffer-substring (+ p 2) (+ p 2 13))) 1493 (fnlen (or (string-match "\0" namefld) 13)) 1494 (efnname (decode-coding-string (substring namefld 0 fnlen) 1495 archive-file-name-coding-system)) 1496 (csize (archive-l-e (+ p 15) 4)) 1497 (moddate (archive-l-e (+ p 19) 2)) 1498 (modtime (archive-l-e (+ p 21) 2)) 1499 (ucsize (archive-l-e (+ p 25) 4)) 1500 (fiddle (string= efnname (upcase efnname))) 1501 (ifnname (if fiddle (downcase efnname) efnname)) 1502 (text (format " %8d %-11s %-8s %s" 1503 ucsize 1504 (archive-dosdate moddate) 1505 (archive-dostime modtime) 1506 ifnname))) 1507 (setq maxlen (max maxlen fnlen) 1508 totalsize (+ totalsize ucsize) 1509 visual (cons (vector text 1510 (- (length text) (length ifnname)) 1511 (length text)) 1512 visual) 1513 files (cons (vector efnname ifnname fiddle nil (1- p)) 1514 files) 1515 p (+ p 29 csize)))) 1516 (goto-char (point-min)) 1517 (let ((dash (concat "- -------- ----------- -------- " 1518 (make-string maxlen ?-) 1519 "\n"))) 1520 (insert "M Length Date Time File\n" 1521 dash) 1522 (archive-summarize-files (nreverse visual)) 1523 (insert dash 1524 (format " %8d %d file%s" 1525 totalsize 1526 (length files) 1527 (if (= 1 (length files)) "" "s")) 1528 "\n")) 1529 (apply #'vector (nreverse files)))) 1530 1531(defun archive-arc-rename-entry (newname descr) 1532 (if (string-match "[:\\/]" newname) 1533 (error "File names in arc files must not contain a directory component")) 1534 (if (> (length newname) 12) 1535 (error "File names in arc files are limited to 12 characters")) 1536 (let ((name (concat newname (substring "\0\0\0\0\0\0\0\0\0\0\0\0\0" 1537 (length newname)))) 1538 (inhibit-read-only t)) 1539 (save-restriction 1540 (save-excursion 1541 (widen) 1542 (goto-char (+ archive-proper-file-start (aref descr 4) 2)) 1543 (delete-char 13) 1544 (arc-insert-unibyte name))))) 1545;; ------------------------------------------------------------------------- 1546;;; Section: Lzh Archives 1547 1548(defun archive-lzh-summarize (&optional start) 1549 (let ((p (or start 1)) ;; 1 for .lzh, something further on for .exe 1550 (totalsize 0) 1551 (maxlen 8) 1552 files 1553 visual) 1554 (while (progn (goto-char p) ;beginning of a base header. 1555 (looking-at "\\(.\\|\n\\)\\(.\\|\n\\)-l[hz][0-9ds]-")) 1556 (let* ((hsize (get-byte p)) ;size of the base header (level 0 and 1) 1557 (csize (archive-l-e (+ p 7) 4)) ;size of a compressed file to follow (level 0 and 2), 1558 ;size of extended headers + the compressed file to follow (level 1). 1559 (ucsize (archive-l-e (+ p 11) 4)) ;size of an uncompressed file. 1560 (time1 (archive-l-e (+ p 15) 2)) ;date/time (MSDOS format in level 0, 1 headers 1561 (time2 (archive-l-e (+ p 17) 2)) ;and UNIX format in level 2 header.) 1562 (hdrlvl (get-byte (+ p 20))) ;header level 1563 thsize ;total header size (base + extensions) 1564 fnlen efnname osid fiddle ifnname width p2 1565 neh ;beginning of next extension header (level 1 and 2) 1566 mode modestr uid gid text dir prname 1567 gname uname modtime moddate) 1568 (if (= hdrlvl 3) (error "can't handle lzh level 3 header type")) 1569 (when (or (= hdrlvl 0) (= hdrlvl 1)) 1570 (setq fnlen (get-byte (+ p 21))) ;filename length 1571 (setq efnname (let ((str (buffer-substring (+ p 22) (+ p 22 fnlen)))) ;filename from offset 22 1572 (decode-coding-string 1573 str archive-file-name-coding-system))) 1574 (setq p2 (+ p 22 fnlen))) ; 1575 (if (= hdrlvl 1) 1576 (setq neh (+ p2 3)) ;specific to level 1 header 1577 (if (= hdrlvl 2) 1578 (setq neh (+ p 24)))) ;specific to level 2 header 1579 (if neh ;if level 1 or 2 we expect extension headers to follow 1580 (let* ((ehsize (archive-l-e neh 2)) ;size of the extension header 1581 (etype (get-byte (+ neh 2)))) ;extension type 1582 (while (not (= ehsize 0)) 1583 (cond 1584 ((= etype 1) ;file name 1585 (let ((i (+ neh 3))) 1586 (while (< i (+ neh ehsize)) 1587 (setq efnname (concat efnname (char-to-string (get-byte i)))) 1588 (setq i (1+ i))))) 1589 ((= etype 2) ;directory name 1590 (let ((i (+ neh 3))) 1591 (while (< i (+ neh ehsize)) 1592 (setq dir (concat dir 1593 (if (= (get-byte i) 1594 255) 1595 "/" 1596 (char-to-string 1597 (char-after i))))) 1598 (setq i (1+ i))))) 1599 ((= etype 80) ;Unix file permission 1600 (setq mode (archive-l-e (+ neh 3) 2))) 1601 ((= etype 81) ;UNIX file group/user ID 1602 (progn (setq uid (archive-l-e (+ neh 3) 2)) 1603 (setq gid (archive-l-e (+ neh 5) 2)))) 1604 ((= etype 82) ;UNIX file group name 1605 (let ((i (+ neh 3))) 1606 (while (< i (+ neh ehsize)) 1607 (setq gname (concat gname (char-to-string (char-after i)))) 1608 (setq i (1+ i))))) 1609 ((= etype 83) ;UNIX file user name 1610 (let ((i (+ neh 3))) 1611 (while (< i (+ neh ehsize)) 1612 (setq uname (concat uname (char-to-string (char-after i)))) 1613 (setq i (1+ i))))) 1614 ) 1615 (setq neh (+ neh ehsize)) 1616 (setq ehsize (archive-l-e neh 2)) 1617 (setq etype (get-byte (+ neh 2)))) 1618 ;;get total header size for level 1 and 2 headers 1619 (setq thsize (- neh p)))) 1620 (if (= hdrlvl 0) ;total header size 1621 (setq thsize hsize)) 1622 ;; OS ID field not present in level 0 header, use code 0 "generic" 1623 ;; in that case as per lha program header.c get_header() 1624 (setq osid (cond ((= hdrlvl 0) 0) 1625 ((= hdrlvl 1) (char-after (+ p 22 fnlen 2))) 1626 ((= hdrlvl 2) (char-after (+ p 23))))) 1627 ;; Filename fiddling must follow the lha program, otherwise the name 1628 ;; passed to "lha pq" etc won't match (which for an extract silently 1629 ;; results in no output). As of version 1.14i it goes from the OS ID, 1630 ;; - For 'M' MSDOS: msdos_to_unix_filename() downcases always, and 1631 ;; converts "\" to "/". 1632 ;; - For 0 generic: generic_to_unix_filename() downcases if there's 1633 ;; no lower case already present, and converts "\" to "/". 1634 ;; - For 'm' macOS: macos_to_unix_filename() changes "/" to ":" and 1635 ;; ":" to "/" 1636 (setq fiddle (cond ((= ?M osid) t) 1637 ((= 0 osid) (string= efnname (upcase efnname))))) 1638 (setq ifnname (if fiddle (downcase efnname) efnname)) 1639 (setq prname (if dir (concat dir ifnname) ifnname)) 1640 (setq width (if prname (string-width prname) 0)) 1641 (setq modestr (if mode (archive-int-to-mode mode) "??????????")) 1642 (setq moddate (if (= hdrlvl 2) 1643 (archive-unixdate time1 time2) ;level 2 header in UNIX format 1644 (archive-dosdate time2))) ;level 0 and 1 header in DOS format 1645 (setq modtime (if (= hdrlvl 2) 1646 (archive-unixtime time1 time2) 1647 (archive-dostime time1))) 1648 (setq text (if archive-alternate-display 1649 (format " %8d %5S %5S %s" 1650 ucsize 1651 (or uid "?") 1652 (or gid "?") 1653 ifnname) 1654 (format " %10s %8d %-11s %-8s %s" 1655 modestr 1656 ucsize 1657 moddate 1658 modtime 1659 prname))) 1660 (setq maxlen (max maxlen width) 1661 totalsize (+ totalsize ucsize) 1662 visual (cons (vector text 1663 (- (length text) (length prname)) 1664 (length text)) 1665 visual) 1666 files (cons (vector prname ifnname fiddle mode (1- p)) 1667 files)) 1668 (cond ((= hdrlvl 1) 1669 (setq p (+ p hsize 2 csize))) 1670 ((or (= hdrlvl 2) (= hdrlvl 0)) 1671 (setq p (+ p thsize 2 csize)))) 1672 )) 1673 (goto-char (point-min)) 1674 (let ((dash (concat (if archive-alternate-display 1675 "- -------- ----- ----- " 1676 "- ---------- -------- ----------- -------- ") 1677 (make-string maxlen ?-) 1678 "\n")) 1679 (header (if archive-alternate-display 1680 "M Length Uid Gid File\n" 1681 "M Filemode Length Date Time File\n")) 1682 (sumline (if archive-alternate-display 1683 " %8.0f %d file%s" 1684 " %8.0f %d file%s"))) 1685 (insert header dash) 1686 (archive-summarize-files (nreverse visual)) 1687 (insert dash 1688 (format sumline 1689 totalsize 1690 (length files) 1691 (if (= 1 (length files)) "" "s")) 1692 "\n")) 1693 (apply #'vector (nreverse files)))) 1694 1695(defconst archive-lzh-alternate-display t) 1696 1697(defun archive-lzh-extract (archive name) 1698 (archive-extract-by-stdout archive name archive-lzh-extract)) 1699 1700(defun archive-lzh-resum (p count) 1701 (let ((sum 0)) 1702 (while (> count 0) 1703 (setq count (1- count) 1704 sum (+ sum (get-byte p)) 1705 p (1+ p))) 1706 (logand sum 255))) 1707 1708(defun archive-lzh-rename-entry (newname descr) 1709 (save-restriction 1710 (save-excursion 1711 (widen) 1712 (let* ((p (+ archive-proper-file-start (aref descr 4))) 1713 (oldhsize (get-byte p)) 1714 (oldfnlen (get-byte (+ p 21))) 1715 (newfnlen (length newname)) 1716 (newhsize (+ oldhsize newfnlen (- oldfnlen))) 1717 (inhibit-read-only t)) 1718 (if (> newhsize 255) 1719 (error "The file name is too long")) 1720 (goto-char (+ p 21)) 1721 (delete-char (1+ oldfnlen)) 1722 (arc-insert-unibyte newfnlen newname) 1723 (goto-char p) 1724 (delete-char 2) 1725 (arc-insert-unibyte newhsize (archive-lzh-resum p newhsize)))))) 1726 1727(defun archive-lzh-ogm (newval files errtxt ofs) 1728 (save-excursion 1729 (save-restriction 1730 (widen) 1731 (dolist (fil files) 1732 (let* ((p (+ archive-proper-file-start (aref fil 4))) 1733 (hsize (get-byte p)) 1734 (fnlen (get-byte (+ p 21))) 1735 (p2 (+ p 22 fnlen)) 1736 (creator (if (>= (- hsize fnlen) 24) (get-byte (+ p2 2)) 0)) 1737 (inhibit-read-only t)) 1738 (if (= creator ?U) 1739 (progn 1740 (or (numberp newval) 1741 (setq newval (funcall newval (archive-l-e (+ p2 ofs) 2)))) 1742 (goto-char (+ p2 ofs)) 1743 (delete-char 2) 1744 (arc-insert-unibyte (logand newval 255) (ash newval -8)) 1745 (goto-char (1+ p)) 1746 (delete-char 1) 1747 (arc-insert-unibyte (archive-lzh-resum (1+ p) hsize))) 1748 (message "Member %s does not have %s field" 1749 (aref fil 1) errtxt))))))) 1750 1751(defun archive-lzh-chown-entry (newuid files) 1752 (archive-lzh-ogm newuid files "an uid" 10)) 1753 1754(defun archive-lzh-chgrp-entry (newgid files) 1755 (archive-lzh-ogm newgid files "a gid" 12)) 1756 1757(defun archive-lzh-chmod-entry (newmode files) 1758 (archive-lzh-ogm 1759 ;; This should work even though newmode will be dynamically accessed. 1760 (lambda (old) (archive-calc-mode old newmode t)) 1761 files "a unix-style mode" 8)) 1762 1763;; ------------------------------------------------------------------------- 1764;;; Section: Lzh Self-Extracting .exe Archives 1765;; 1766;; No support for modifying these files. It looks like the lha for unix 1767;; program (as of version 1.14i) can't create or retain the DOS exe part. 1768;; If you do an "lha a" on a .exe for instance it renames and writes to a 1769;; plain .lzh. 1770 1771(defun archive-lzh-exe-summarize () 1772 "Summarize the contents of an LZH self-extracting exe, for `archive-mode'." 1773 1774 ;; Skip the initial executable code part and apply archive-lzh-summarize 1775 ;; to the archive part proper. The "-lh5-" etc regexp here for the start 1776 ;; is the same as in archive-find-type. 1777 ;; 1778 ;; The lha program (version 1.14i) does this in skip_msdos_sfx1_code() by 1779 ;; a similar scan. It looks for "..-l..-" plus for level 0 or 1 a test of 1780 ;; the header checksum, or level 2 a test of the "attribute" and size. 1781 ;; 1782 (re-search-forward "..-l[hz][0-9ds]-" nil) 1783 (archive-lzh-summarize (match-beginning 0))) 1784 1785;; `archive-lzh-extract' runs "lha pq", and that works for .exe as well as 1786;; .lzh files 1787(defalias 'archive-lzh-exe-extract 'archive-lzh-extract 1788 "Extract a member from an LZH self-extracting exe, for `archive-mode'.") 1789 1790;; ------------------------------------------------------------------------- 1791;;; Section: Zip Archives 1792 1793(defun archive-zip-summarize () 1794 (goto-char (- (point-max) (- 22 18))) 1795 (search-backward-regexp "[P]K\005\006") 1796 (let ((p (archive-l-e (+ (point) 16) 4)) 1797 (maxlen 8) 1798 (totalsize 0) 1799 files 1800 visual 1801 emacs-int-has-32bits) 1802 (when (or (= p #xffffffff) (= p -1)) 1803 ;; If the offset of end-of-central-directory is 0xFFFFFFFF, this 1804 ;; is a Zip64 extended ZIP file format, and we need to glean the 1805 ;; info from Zip64 records instead. 1806 ;; 1807 ;; First, find the Zip64 end-of-central-directory locator. 1808 (search-backward "PK\006\007") 1809 (setq p (+ (point-min) 1810 (archive-l-e (+ (point) 8) 8))) 1811 (goto-char p) 1812 ;; We should be at Zip64 end-of-central-directory record now. 1813 (or (string= "PK\006\006" (buffer-substring p (+ p 4))) 1814 (error "Unrecognized ZIP file format")) 1815 ;; Offset to central directory: 1816 (setq p (archive-l-e (+ p 48) 8))) 1817 (setq p (+ p (point-min))) 1818 (while (string= "PK\001\002" (buffer-substring p (+ p 4))) 1819 (let* ((creator (get-byte (+ p 5))) 1820 ;; (method (archive-l-e (+ p 10) 2)) 1821 (modtime (archive-l-e (+ p 12) 2)) 1822 (moddate (archive-l-e (+ p 14) 2)) 1823 (ucsize (archive-l-e (+ p 24) 4)) 1824 (fnlen (archive-l-e (+ p 28) 2)) 1825 (exlen (archive-l-e (+ p 30) 2)) 1826 (fclen (archive-l-e (+ p 32) 2)) 1827 (lheader (archive-l-e (+ p 42) 4)) 1828 (efnname (let ((str (buffer-substring (+ p 46) (+ p 46 fnlen)))) 1829 (decode-coding-string 1830 str archive-file-name-coding-system))) 1831 (ucsize (if (and (or (= ucsize #xffffffff) (= ucsize -1)) 1832 (> exlen 0)) 1833 ;; APPNOTE.TXT, para 4.5.3: the Extra Field 1834 ;; begins with 2 bytes of signature 1835 ;; (\000\001), followed by 2 bytes that give 1836 ;; the size of the extra block, followed by 1837 ;; an 8-byte uncompressed size. 1838 (archive-l-e (+ p 46 fnlen 4) 8) 1839 ucsize)) 1840 (isdir (and (= ucsize 0) 1841 (string= (file-name-nondirectory efnname) ""))) 1842 (mode (cond ((memq creator '(2 3)) ; Unix 1843 (archive-l-e (+ p 40) 2)) 1844 ((memq creator '(0 5 6 7 10 11 15)) ; Dos etc. 1845 (logior ?\444 1846 (if isdir (logior 16384 ?\111) 0) 1847 (if (zerop 1848 (logand 1 (get-byte (+ p 38)))) 1849 ?\222 0))) 1850 (t nil))) 1851 (modestr (if mode (archive-int-to-mode mode) "??????????")) 1852 (fiddle (and archive-zip-case-fiddle 1853 (not (not (memq creator '(0 2 4 5 9)))) 1854 (string= (upcase efnname) efnname))) 1855 (ifnname (if fiddle (downcase efnname) efnname)) 1856 (width (string-width ifnname)) 1857 (text (format " %10s %8d %-11s %-8s %s" 1858 modestr 1859 ucsize 1860 (archive-dosdate moddate) 1861 (archive-dostime modtime) 1862 ifnname))) 1863 (setq maxlen (max maxlen width) 1864 totalsize (+ totalsize ucsize) 1865 visual (cons (vector text 1866 (- (length text) (length ifnname)) 1867 (length text)) 1868 visual) 1869 files (cons (if isdir 1870 nil 1871 (vector efnname ifnname fiddle mode 1872 (list (1- p) lheader))) 1873 files) 1874 p (+ p 46 fnlen exlen fclen)))) 1875 (goto-char (point-min)) 1876 (let ((dash (concat "- ---------- -------- ----------- -------- " 1877 (make-string maxlen ?-) 1878 "\n"))) 1879 (insert "M Filemode Length Date Time File\n" 1880 dash) 1881 (archive-summarize-files (nreverse visual)) 1882 (insert dash 1883 (format " %8d %d file%s" 1884 totalsize 1885 (length files) 1886 (if (= 1 (length files)) "" "s")) 1887 "\n")) 1888 (apply #'vector (nreverse files)))) 1889 1890(defun archive-zip-extract (archive name) 1891 (cond 1892 ((member-ignore-case (car archive-zip-extract) '("pkunzip" "pkzip")) 1893 (archive-*-extract archive name archive-zip-extract)) 1894 ((equal (car archive-zip-extract) archive-7z-program) 1895 (let ((archive-7z-extract archive-zip-extract)) 1896 (archive-7z-extract archive name))) 1897 (t 1898 (archive-extract-by-stdout 1899 archive 1900 ;; unzip expands wildcards in NAME, so we need to quote it. But 1901 ;; not on DOS/Windows, since that fails extraction on those 1902 ;; systems (unless w32-quote-process-args is nil), and file names 1903 ;; with wildcards in zip archives don't work there anyway. 1904 ;; FIXME: Does pkunzip need similar treatment? 1905 (if (and (or (not (memq system-type '(windows-nt ms-dos))) 1906 (and (boundp 'w32-quote-process-args) 1907 (null w32-quote-process-args))) 1908 (equal (car archive-zip-extract) "unzip")) 1909 (shell-quote-argument name) 1910 name) 1911 archive-zip-extract)))) 1912 1913(defun archive-zip-write-file-member (archive descr) 1914 (archive-*-write-file-member 1915 archive 1916 descr 1917 (if (aref descr 2) archive-zip-update-case archive-zip-update))) 1918 1919(defun archive-zip-chmod-entry (newmode files) 1920 (save-restriction 1921 (save-excursion 1922 (widen) 1923 (dolist (fil files) 1924 (let* ((p (+ archive-proper-file-start (car (aref fil 4)))) 1925 (creator (get-byte (+ p 5))) 1926 (oldmode (aref fil 3)) 1927 (newval (archive-calc-mode oldmode newmode t)) 1928 (inhibit-read-only t)) 1929 (cond ((memq creator '(2 3)) ; Unix 1930 (goto-char (+ p 40)) 1931 (delete-char 2) 1932 (arc-insert-unibyte (logand newval 255) (ash newval -8))) 1933 ((memq creator '(0 5 6 7 10 11 15)) ; Dos etc. 1934 (goto-char (+ p 38)) 1935 (arc-insert-unibyte 1936 (logior (logand (get-byte (point)) 254) 1937 (logand (logxor 1 (ash newval -7)) 1))) 1938 (delete-char 1)) 1939 (t (message "Don't know how to change mode for this member")))) 1940 )))) 1941;; ------------------------------------------------------------------------- 1942;;; Section: Zoo Archives 1943 1944(defun archive-zoo-summarize () 1945 (let ((p (1+ (archive-l-e 25 4))) 1946 (maxlen 8) 1947 (totalsize 0) 1948 files 1949 visual) 1950 (while (and (string= "\334\247\304\375" (buffer-substring p (+ p 4))) 1951 (> (archive-l-e (+ p 6) 4) 0)) 1952 (let* ((next (1+ (archive-l-e (+ p 6) 4))) 1953 (moddate (archive-l-e (+ p 14) 2)) 1954 (modtime (archive-l-e (+ p 16) 2)) 1955 (ucsize (archive-l-e (+ p 20) 4)) 1956 (namefld (buffer-substring (+ p 38) (+ p 38 13))) 1957 (dirtype (get-byte (+ p 4))) 1958 (lfnlen (if (= dirtype 2) (get-byte (+ p 56)) 0)) 1959 (ldirlen (if (= dirtype 2) (get-byte (+ p 57)) 0)) 1960 (fnlen (or (string-match "\0" namefld) 13)) 1961 (efnname (let ((str 1962 (concat 1963 (if (> ldirlen 0) 1964 (concat (buffer-substring 1965 (+ p 58 lfnlen) 1966 (+ p 58 lfnlen ldirlen -1)) 1967 "/") 1968 "") 1969 (if (> lfnlen 0) 1970 (buffer-substring (+ p 58) 1971 (+ p 58 lfnlen -1)) 1972 (substring namefld 0 fnlen))))) 1973 (decode-coding-string 1974 str archive-file-name-coding-system))) 1975 (fiddle (and (= lfnlen 0) (string= efnname (upcase efnname)))) 1976 (ifnname (if fiddle (downcase efnname) efnname)) 1977 (width (string-width ifnname)) 1978 (text (format " %8d %-11s %-8s %s" 1979 ucsize 1980 (archive-dosdate moddate) 1981 (archive-dostime modtime) 1982 ifnname))) 1983 (setq maxlen (max maxlen width) 1984 totalsize (+ totalsize ucsize) 1985 visual (cons (vector text 1986 (- (length text) (length ifnname)) 1987 (length text)) 1988 visual) 1989 files (cons (vector efnname ifnname fiddle nil (1- p)) 1990 files) 1991 p next))) 1992 (goto-char (point-min)) 1993 (let ((dash (concat "- -------- ----------- -------- " 1994 (make-string maxlen ?-) 1995 "\n"))) 1996 (insert "M Length Date Time File\n" 1997 dash) 1998 (archive-summarize-files (nreverse visual)) 1999 (insert dash 2000 (format " %8d %d file%s" 2001 totalsize 2002 (length files) 2003 (if (= 1 (length files)) "" "s")) 2004 "\n")) 2005 (apply #'vector (nreverse files)))) 2006 2007(defun archive-zoo-extract (archive name) 2008 (archive-extract-by-stdout archive name archive-zoo-extract)) 2009 2010;; ------------------------------------------------------------------------- 2011;;; Section: Rar Archives 2012 2013(defun archive-rar-summarize (&optional file) 2014 ;; File is used internally for `archive-rar-exe-summarize'. 2015 (unless file (setq file buffer-file-name)) 2016 (let* ((copy (file-local-copy file)) 2017 (maxname 10) 2018 (maxsize 5) 2019 (files ())) 2020 (with-temp-buffer 2021 (call-process "lsar" nil t nil "-l" (or file copy)) 2022 (if copy (delete-file copy)) 2023 (goto-char (point-min)) 2024 (re-search-forward "^\\(\s+=+\s*\\)+\n") 2025 (while (looking-at (concat "^\s+[0-9.]+\s+D?-+\s+" ; Flags 2026 "\\([0-9-]+\\)\s+" ; Size 2027 "\\([-0-9.%]+\\)\s+" ; Ratio 2028 "\\([0-9a-zA-Z]+\\)\s+" ; Mode 2029 "\\([0-9-]+\\)\s+" ; Date 2030 "\\([0-9:]+\\)\s+" ; Time 2031 "\\(.*\\)\n" ; Name 2032 )) 2033 (goto-char (match-end 0)) 2034 (let ((name (match-string 6)) 2035 (size (match-string 1))) 2036 (if (> (length name) maxname) (setq maxname (length name))) 2037 (if (> (length size) maxsize) (setq maxsize (length size))) 2038 (push (vector name name nil nil 2039 ;; Size, Ratio. 2040 size (match-string 2) 2041 ;; Date, Time. 2042 (match-string 4) (match-string 5)) 2043 files)))) 2044 (setq files (nreverse files)) 2045 (goto-char (point-min)) 2046 (let* ((format (format " %%s %%s %%%ds %%5s %%s" maxsize)) 2047 (sep (format format "----------" "-----" (make-string maxsize ?-) 2048 "-----" "")) 2049 (column (length sep))) 2050 (insert (format format " Date " "Time " "Size" "Ratio" "Filename") "\n") 2051 (insert sep (make-string maxname ?-) "\n") 2052 (archive-summarize-files (mapcar (lambda (desc) 2053 (let ((text 2054 (format format 2055 (aref desc 6) 2056 (aref desc 7) 2057 (aref desc 4) 2058 (aref desc 5) 2059 (aref desc 1)))) 2060 (vector text 2061 column 2062 (length text)))) 2063 files)) 2064 (insert sep (make-string maxname ?-) "\n") 2065 (apply #'vector files)))) 2066 2067(defun archive-rar-extract (archive name) 2068 ;; unrar-free seems to have no way to extract to stdout or even to a file. 2069 (if (file-name-absolute-p name) 2070 ;; The code below assumes the name is relative and may do undesirable 2071 ;; things otherwise. 2072 (error "Can't extract files with non-relative names") 2073 (archive-extract-by-file archive name '("unar" "-no-directory" "-o") "Successfully extracted"))) 2074 2075;;; Section: Rar self-extracting .exe archives. 2076 2077(defun archive-rar-exe-summarize () 2078 (let ((tmpfile (make-temp-file "rarexe"))) 2079 (unwind-protect 2080 (progn 2081 (goto-char (point-min)) 2082 (re-search-forward "Rar!") 2083 (write-region (match-beginning 0) (point-max) tmpfile) 2084 (archive-rar-summarize tmpfile)) 2085 (delete-file tmpfile)))) 2086 2087(defun archive-rar-exe-extract (archive name) 2088 (let* ((tmpfile (make-temp-file "rarexe")) 2089 (buf (find-buffer-visiting archive)) 2090 (tmpbuf (unless buf (generate-new-buffer " *rar-exe*")))) 2091 (unwind-protect 2092 (progn 2093 (with-current-buffer (or buf tmpbuf) 2094 (save-excursion 2095 (save-restriction 2096 (if buf 2097 ;; point-max unwidened is assumed to be the end of the 2098 ;; summary text and the beginning of the actual file data. 2099 (progn (goto-char (point-max)) (widen)) 2100 (insert-file-contents-literally archive) 2101 (goto-char (point-min))) 2102 (re-search-forward "Rar!") 2103 (write-region (match-beginning 0) (point-max) tmpfile)))) 2104 (archive-rar-extract tmpfile name)) 2105 (if tmpbuf (kill-buffer tmpbuf)) 2106 (delete-file tmpfile)))) 2107 2108;; ------------------------------------------------------------------------- 2109;;; Section: 7z Archives 2110 2111(defun archive-7z-summarize () 2112 (let ((maxname 10) 2113 (maxsize 5) 2114 (file buffer-file-name) 2115 (files ())) 2116 (with-temp-buffer 2117 (call-process archive-7z-program nil t nil "l" "-slt" file) 2118 (goto-char (point-min)) 2119 ;; Four dashes start the meta info section that should be skipped. 2120 ;; Archive members start with more than four dashes. 2121 (re-search-forward "^-----+\n") 2122 (while (re-search-forward "^Path = \\(.*\\)\n" nil t) 2123 (goto-char (match-end 0)) 2124 (let ((name (match-string 1)) 2125 (size (save-excursion 2126 (and (re-search-forward "^Size = \\(.*\\)\n") 2127 (match-string 1)))) 2128 (time (save-excursion 2129 (and (re-search-forward "^Modified = \\(.*\\)\n") 2130 (match-string 1))))) 2131 (if (> (length name) maxname) (setq maxname (length name))) 2132 (if (> (length size) maxsize) (setq maxsize (length size))) 2133 (push (vector name name nil nil time nil nil size) 2134 files)))) 2135 (setq files (nreverse files)) 2136 (goto-char (point-min)) 2137 (let* ((format (format " %%%ds %%s %%s" maxsize)) 2138 (sep (format format (make-string maxsize ?-) "-------------------" "")) 2139 (column (length sep))) 2140 (insert (format format "Size " "Date Time " " Filename") "\n") 2141 (insert sep (make-string maxname ?-) "\n") 2142 (archive-summarize-files (mapcar (lambda (desc) 2143 (let ((text 2144 (format format 2145 (aref desc 7) 2146 (aref desc 4) 2147 (aref desc 1)))) 2148 (vector text 2149 column 2150 (length text)))) 2151 files)) 2152 (insert sep (make-string maxname ?-) "\n") 2153 (apply #'vector files)))) 2154 2155(defun archive-7z-extract (archive name) 2156 ;; 7z doesn't provide a `quiet' option to suppress non-essential 2157 ;; stderr messages. So redirect stderr to a temp file and display it 2158 ;; in the echo area when it contains no message indicating success. 2159 (archive-extract-by-stdout 2160 archive name archive-7z-extract "Everything is Ok")) 2161 2162(defun archive-7z-write-file-member (archive descr) 2163 (archive-*-write-file-member 2164 archive 2165 descr 2166 archive-7z-update)) 2167 2168;; ------------------------------------------------------------------------- 2169;;; Section `ar' archives. 2170 2171;; TODO: we currently only handle the basic format of ar archives, 2172;; not the GNU nor the BSD extensions. As it turns out, this is sufficient 2173;; for .deb packages. 2174 2175(autoload 'tar-grind-file-mode "tar-mode") 2176 2177(defconst archive-ar-file-header-re 2178 "\\(.\\{16\\}\\)\\([ 0-9]\\{12\\}\\)\\([ 0-9]\\{6\\}\\)\\([ 0-9]\\{6\\}\\)\\([ 0-7]\\{8\\}\\)\\([ 0-9]\\{10\\}\\)`\n") 2179 2180(defun archive-ar-summarize () 2181 ;; File is used internally for `archive-rar-exe-summarize'. 2182 (let* ((maxname 10) 2183 (maxtime 16) 2184 (maxuser 5) 2185 (maxgroup 5) 2186 (maxmode 8) 2187 (maxsize 5) 2188 (files ())) 2189 (goto-char (point-min)) 2190 (search-forward "!<arch>\n") 2191 (while (looking-at archive-ar-file-header-re) 2192 (let ((name (match-string 1)) 2193 extname 2194 (time (string-to-number (match-string 2))) 2195 (user (match-string 3)) 2196 (group (match-string 4)) 2197 (mode (string-to-number (match-string 5) 8)) 2198 (size (string-to-number (match-string 6)))) 2199 ;; Move to the beginning of the data. 2200 (goto-char (match-end 0)) 2201 (setq time (format-time-string "%Y-%m-%d %H:%M" time)) 2202 (setq extname 2203 (cond ((equal name "// ") 2204 (propertize ".<ExtNamesTable>." 'face 'italic)) 2205 ((equal name "/ ") 2206 (propertize ".<LookupTable>." 'face 'italic)) 2207 ((string-match "/? *\\'" name) 2208 (substring name 0 (match-beginning 0))))) 2209 (setq user (substring user 0 (string-match " +\\'" user))) 2210 (setq group (substring group 0 (string-match " +\\'" group))) 2211 (setq mode (tar-grind-file-mode mode)) 2212 ;; Move to the end of the data. 2213 (forward-char size) (if (eq ?\n (char-after)) (forward-char 1)) 2214 (setq size (number-to-string size)) 2215 (if (> (length name) maxname) (setq maxname (length name))) 2216 (if (> (length time) maxtime) (setq maxtime (length time))) 2217 (if (> (length user) maxuser) (setq maxuser (length user))) 2218 (if (> (length group) maxgroup) (setq maxgroup (length group))) 2219 (if (> (length mode) maxmode) (setq maxmode (length mode))) 2220 (if (> (length size) maxsize) (setq maxsize (length size))) 2221 (push (vector name extname nil mode 2222 time user group size) 2223 files))) 2224 (setq files (nreverse files)) 2225 (goto-char (point-min)) 2226 (let* ((format (format "%%%ds %%%ds/%%-%ds %%%ds %%%ds %%s" 2227 maxmode maxuser maxgroup maxsize maxtime)) 2228 (sep (format format (make-string maxmode ?-) 2229 (make-string maxuser ?-) 2230 (make-string maxgroup ?-) 2231 (make-string maxsize ?-) 2232 (make-string maxtime ?-) "")) 2233 (column (length sep))) 2234 (insert (format format " Mode " "User" "Group" " Size " 2235 " Date " "Filename") 2236 "\n") 2237 (insert sep (make-string maxname ?-) "\n") 2238 (archive-summarize-files (mapcar (lambda (desc) 2239 (let ((text 2240 (format format 2241 (aref desc 3) 2242 (aref desc 5) 2243 (aref desc 6) 2244 (aref desc 7) 2245 (aref desc 4) 2246 (aref desc 1)))) 2247 (vector text 2248 column 2249 (length text)))) 2250 files)) 2251 (insert sep (make-string maxname ?-) "\n") 2252 (apply #'vector files)))) 2253 2254(defun archive-ar-extract (archive name) 2255 (let ((destbuf (current-buffer)) 2256 (archivebuf (find-file-noselect archive)) 2257 (from nil) size) 2258 (with-current-buffer archivebuf 2259 (save-restriction 2260 ;; We may be in archive-mode or not, so either with or without 2261 ;; narrowing and with or without a prepended summary. 2262 (save-excursion 2263 (widen) 2264 (search-forward "!<arch>\n") 2265 (while (and (not from) (looking-at archive-ar-file-header-re)) 2266 (let ((this (match-string 1))) 2267 (setq size (string-to-number (match-string 6))) 2268 (goto-char (match-end 0)) 2269 (if (equal name this) 2270 (setq from (point)) 2271 ;; Move to the end of the data. 2272 (forward-char size) (if (eq ?\n (char-after)) (forward-char 1))))) 2273 (when from 2274 (set-buffer-multibyte nil) 2275 (with-current-buffer destbuf 2276 ;; Do it within the `widen'. 2277 (insert-buffer-substring archivebuf from (+ from size))) 2278 (set-buffer-multibyte 'to) 2279 ;; Inform the caller that the call succeeded. 2280 t)))))) 2281 2282;; ------------------------------------------------------------------------- 2283;; This line was a mistake; it is kept now for compatibility. 2284;; rms 15 Oct 98 2285(provide 'archive-mode) 2286 2287(provide 'arc-mode) 2288 2289;;; arc-mode.el ends here 2290