/usr/share/common-lisp/source/zip/zip.lisp is in cl-zip 20150608-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 | ;;;; Copyright (c) 2004-2006 David Lichteblau <david@lichteblau.com>
;;;; Lizenz: (L)LGPL
;;;;
;;;; Urspruenglicher Autor: David Lichteblau.
;;;; Aenderungen durch knowledgeTools GmbH.
;;;; http://www.pkware.com/business_and_developers/developer/popups/appnote.txt
;;;; (http://www.pkware.com/company/standards/appnote/)
;;;; http://www.pkware.com/documents/casestudies/APPNOTE.TXT
(in-package :zip)
(defun file-mode (pathname)
#+(or windows mswindows)
#o640
#-(or windows mswindows)
(progn
#-(or sbcl allegro ccl)
(error "ZIP::FILE-MODE not ported")
#+ccl
(multiple-value-bind (win mode size mtime inode uid blocksize rmtime gid dev)
(ccl::%stat (ccl:native-translated-namestring pathname))
(declare (ignore win size mtime inode uid blocksize rmtime gid dev))
mode)
#+sbcl
(sb-posix:stat-mode (sb-posix:stat pathname))
#+allegro
(excl.osi:stat-mode (excl.osi:lstat pathname))))
(defun make-byte-array (n)
(make-array n :element-type '(unsigned-byte 8)))
(defun get-short (array offset)
(logior (elt array offset)
(ash (elt array (1+ offset)) 8)))
(defun (setf get-short) (newval array offset)
(setf (elt array (+ offset 0)) (logand newval #xff))
(setf newval (ash newval -8))
(setf (elt array (+ offset 1)) (logand newval #xff))
newval)
(defun get-int (array offset)
(logior (elt array offset)
(ash (elt array (+ offset 1)) 8)
(ash (elt array (+ offset 2)) 16)
(ash (elt array (+ offset 3)) 24)))
(defun (setf get-int) (newval array offset)
(setf (elt array (+ offset 0)) (logand newval #xff))
(setf newval (ash newval -8))
(setf (elt array (+ offset 1)) (logand newval #xff))
(setf newval (ash newval -8))
(setf (elt array (+ offset 2)) (logand newval #xff))
(setf newval (ash newval -8))
(setf (elt array (+ offset 3)) (logand newval #xff))
newval)
(defmacro define-record (constructor
(&key (length #-clisp (gensym) #+clisp (gentemp)))
&rest fields)
`(progn
(defconstant ,length
,(loop
for (nil type) in fields
sum (ecase type (:int 4) (:short 2))))
(defun ,constructor (&optional s)
(let ((bytes (make-byte-array ,length)))
(when s
(read-sequence bytes s))
bytes))
,@(loop
for (name type) in fields
for offset = 0 then (+ offset length)
for length = (ecase type (:int 4) (:short 2))
for reader = (ecase type (:int 'get-int) (:short 'get-short))
unless (eq name :dummy)
append `((defun ,name (r)
(,reader r ,offset))
(defun (setf ,name) (newval r)
(setf (,reader r ,offset) newval))))))
(define-record make-end-header (:length +end-header-length+)
(end/signature :int)
(end/this-disc :short)
(end/central-directory-disc :short)
(end/disc-files :short)
(end/total-files :short)
(end/central-directory-size :int)
(end/central-directory-offset :int)
(end/comment-length :short))
(define-record make-directory-entry ()
(cd/signature :int)
(cd/version-made-by :short)
(cd/version-needed-to-extract :short)
(cd/flags :short)
(cd/method :short)
(cd/time :short)
(cd/date :short)
(cd/crc :int)
(cd/compressed-size :int)
(cd/size :int)
(cd/name-length :short)
(cd/extra-length :short)
(cd/comment-length :short)
(cd/disc-number :short)
(cd/internal-attributes :short)
(cd/external-attributes :int)
(cd/offset :int))
(define-record make-local-header ()
(file/signature :int)
(file/version-needed-to-extract :short)
(file/flags :short)
(file/method :short)
(file/time :short)
(file/date :short)
(file/crc :int)
(file/compressed-size :int)
(file/size :int)
(file/name-length :short)
(file/extra-length :short))
(define-record make-data-descriptor ()
(data/crc :int)
(data/compressed-size :int)
(data/size :int))
(defun compress (input output compressor)
(let ((nin 0)
(nout 0)
(crc (make-instance 'salza2:crc32-checksum)))
(flet ((callback (buffer count)
(write-sequence buffer output :start 0 :end count)
(incf nout count)))
(setf (salza2:callback compressor) #'callback)
(let* ((input-buffer (make-array 8192 :element-type '(unsigned-byte 8))))
(loop
(let ((end (read-sequence input-buffer input)))
(cond
((plusp end)
(salza2:compress-octet-vector input-buffer compressor :end end)
(incf nin end)
(salza2:update crc input-buffer 0 end))
(t
(salza2:finish-compression compressor)
(salza2:reset compressor)
(return (values nin nout (salza2:result crc)))))))))))
(defun store (in out)
"Copy uncompressed bytes from IN to OUT and return values like COMPRESS."
(let ((buf (make-array 8192
:initial-element 0
:element-type '(unsigned-byte 8)))
(ntotal 0)
(crc (make-instance 'salza2:crc32-checksum)))
(loop
for n = (read-sequence buf in :end (length buf))
until (zerop n)
do
(write-sequence buf out :end n)
(incf ntotal n)
(salza2:update crc buf 0 n))
(values ntotal ntotal (salza2:result crc))))
(defun seek-to-end-header (s)
(let* ((len (+ 65536 +end-header-length+))
(flen (progn
(file-position s :end)
(file-position s)))
(guess (max 0 (- flen len))))
(file-position s guess)
(let ((v (make-byte-array (min flen len))))
(read-sequence v s)
(let ((n (search #(80 75 5 6) v :from-end t)))
(unless n
(error "end of central directory header not found"))
(file-position s (+ guess n))))))
(defstruct zipfile
stream
entries)
(defstruct zipfile-entry
name
stream
offset
size
compressed-size
comment
date
mode)
(defstruct zipwriter
stream
compressor
head
tail)
(defstruct zipwriter-entry
file-mode
name
position
header)
(defvar *force-utf-8* nil)
(defun read-entry-object (s)
(let* ((header (make-directory-entry s))
(name (make-array (cd/name-length header)
:element-type '(unsigned-byte 8)))
(comment
(when (plusp (cd/comment-length header))
(make-array (cd/comment-length header)
:element-type '(unsigned-byte 8))))
(utf8p (or (logtest (cd/flags header) 2048) *force-utf-8*)))
(assert (= (cd/signature header) #x02014b50))
(read-sequence name s)
(setf name (decode-name name utf8p))
(file-position s (+ (file-position s) (cd/extra-length header)))
(when comment
(read-sequence comment s)
(setf comment (decode-name comment utf8p)))
(make-zipfile-entry :name name
:stream s
:offset (cd/offset header)
:size (cd/size header)
:compressed-size (cd/compressed-size header)
:comment comment
:date (cd/date header)
:mode (ash (cd/external-attributes header) -16))))
(defmacro with-latin1 ((&optional (enable t)) &body body)
`(invoke-with-latin1 ,enable (lambda () ,@body)))
(defun invoke-with-latin1 (enable fn)
(if enable
(let (#+allegro (excl:*locale* (excl:find-locale :en_US.latin1-base))
#+sbcl (sb-impl::*default-external-format* :latin1))
(funcall fn))
(funcall fn)))
(defun open-zipfile-from-stream (stream &key force-utf-8)
(with-latin1 ()
(let ((*force-utf-8* force-utf-8))
(seek-to-end-header stream)
(let* ((end (make-end-header stream))
(n (end/total-files end))
(entries (make-hash-table :test #'equal))
(zipfile (make-zipfile :stream stream
:entries entries)))
(file-position stream (end/central-directory-offset end))
(dotimes (x n)
(let ((entry (read-entry-object stream)))
(setf (gethash (zipfile-entry-name entry) entries) entry)))
zipfile))))
(defun open-zipfile (pathname &key force-utf-8)
(with-latin1 ()
(let* ((*force-utf-8* force-utf-8)
(s (open pathname :element-type '(unsigned-byte 8))))
(unwind-protect
(progn
(seek-to-end-header s)
(let* ((end (make-end-header s))
(n (end/total-files end))
(entries (make-hash-table :test #'equal))
(zipfile (make-zipfile :stream s
:entries entries)))
(file-position s (end/central-directory-offset end))
(dotimes (x n)
(let ((entry (read-entry-object s)))
(setf (gethash (zipfile-entry-name entry) entries) entry)))
#+sbcl (let ((s s)) (sb-ext:finalize zipfile (lambda ()(close s))))
(setf s nil)
zipfile))
(when s
(close s))))))
(defun close-zipfile (zipfile)
(close (zipfile-stream zipfile)))
(defun get-zipfile-entry (name zipfile)
(gethash name (zipfile-entries zipfile)))
(defvar *allow-cp437* nil)
(defparameter *cp437->unicode* (make-string 256))
(defparameter *unicode->cp437* (make-hash-table))
(dotimes (x 128)
(let ((c (code-char x)))
(setf (elt *cp437->unicode* x) c)
(setf (gethash c *unicode->cp437*) c)))
(defun encode-name (name)
(flet ((utf8 ()
(values (babel:string-to-octets name :encoding :utf-8) t)))
(if *allow-cp437*
(let ((bytes
(map 'vector
(lambda (c) (char-code (gethash c *unicode->cp437*)))
name)))
(if (every #'identity bytes)
(values (make-array (length bytes)
:initial-contents bytes
:element-type '(unsigned-byte 8))
nil)
(utf8)))
(utf8))))
(defun decode-name (name utf8p)
(if utf8p
(babel:octets-to-string name :encoding :utf-8)
(with-output-to-string (s)
(loop
for c across name
do (write-char (elt *cp437->unicode* c) s)))))
;; aus SBCL:
(loop
for (cp437 unicode)
:in '((#x80 #x00C7) ; LATIN CAPITAL LETTER C WITH CEDILLA
(#x81 #x00FC) ; LATIN SMALL LETTER U WITH DIAERESIS
(#x82 #x00E9) ; LATIN SMALL LETTER E WITH ACUTE
(#x83 #x00E2) ; LATIN SMALL LETTER A WITH CIRCUMFLEX
(#x84 #x00E4) ; LATIN SMALL LETTER A WITH DIAERESIS
(#x85 #x016F) ; LATIN SMALL LETTER U WITH RING ABOVE
(#x86 #x0107) ; LATIN SMALL LETTER C WITH ACUTE
(#x87 #x00E7) ; LATIN SMALL LETTER C WITH CEDILLA
(#x88 #x0142) ; LATIN SMALL LETTER L WITH STROKE
(#x89 #x00EB) ; LATIN SMALL LETTER E WITH DIAERESIS
(#x8A #x0150) ; LATIN CAPITAL LETTER O WITH DOUBLE ACUTE
(#x8B #x0151) ; LATIN SMALL LETTER O WITH DOUBLE ACUTE
(#x8C #x00EE) ; LATIN SMALL LETTER I WITH CIRCUMFLEX
(#x8D #x0179) ; LATIN CAPITAL LETTER Z WITH ACUTE
(#x8E #x00C4) ; LATIN CAPITAL LETTER A WITH DIAERESIS
(#x8F #x0106) ; LATIN CAPITAL LETTER C WITH ACUTE
(#x90 #x00C9) ; LATIN CAPITAL LETTER E WITH ACUTE
(#x91 #x0139) ; LATIN CAPITAL LETTER L WITH ACUTE
(#x92 #x013A) ; LATIN SMALL LETTER L WITH ACUTE
(#x93 #x00F4) ; LATIN SMALL LETTER O WITH CIRCUMFLEX
(#x94 #x00F6) ; LATIN SMALL LETTER O WITH DIAERESIS
(#x95 #x013D) ; LATIN CAPITAL LETTER L WITH CARON
(#x96 #x013E) ; LATIN SMALL LETTER L WITH CARON
(#x97 #x015A) ; LATIN CAPITAL LETTER S WITH ACUTE
(#x98 #x015B) ; LATIN SMALL LETTER S WITH ACUTE
(#x99 #x00D6) ; LATIN CAPITAL LETTER O WITH DIAERESIS
(#x9A #x00DC) ; LATIN CAPITAL LETTER U WITH DIAERESIS
(#x9B #x0164) ; LATIN CAPITAL LETTER T WITH CARON
(#x9C #x0165) ; LATIN SMALL LETTER T WITH CARON
(#x9D #x0141) ; LATIN CAPITAL LETTER L WITH STROKE
(#x9E #x00D7) ; MULTIPLICATION SIGN
(#x9F #x010D) ; LATIN SMALL LETTER C WITH CARON
(#xA0 #x00E1) ; LATIN SMALL LETTER A WITH ACUTE
(#xA1 #x00ED) ; LATIN SMALL LETTER I WITH ACUTE
(#xA2 #x00F3) ; LATIN SMALL LETTER O WITH ACUTE
(#xA3 #x00FA) ; LATIN SMALL LETTER U WITH ACUTE
(#xA4 #x0104) ; LATIN CAPITAL LETTER A WITH OGONEK
(#xA5 #x0105) ; LATIN SMALL LETTER A WITH OGONEK
(#xA6 #x017D) ; LATIN CAPITAL LETTER Z WITH CARON
(#xA7 #x017E) ; LATIN SMALL LETTER Z WITH CARON
(#xA8 #x0118) ; LATIN CAPITAL LETTER E WITH OGONEK
(#xA9 #x0119) ; LATIN SMALL LETTER E WITH OGONEK
(#xAA #x00AC) ; NOT SIGN
(#xAB #x017A) ; LATIN SMALL LETTER Z WITH ACUTE
(#xAC #x010C) ; LATIN CAPITAL LETTER C WITH CARON
(#xAD #x015F) ; LATIN SMALL LETTER S WITH CEDILLA
(#xAE #x00AB) ; LEFT-POINTING DOUBLE ANGLE QUOTATION MARK
(#xAF #x00BB) ; RIGHT-POINTING DOUBLE ANGLE QUOTATION MARK
(#xB0 #x2591) ; LIGHT SHADE
(#xB1 #x2592) ; MEDIUM SHADE
(#xB2 #x2593) ; DARK SHADE
(#xB3 #x2502) ; BOX DRAWINGS LIGHT VERTICAL
(#xB4 #x2524) ; BOX DRAWINGS LIGHT VERTICAL AND LEFT
(#xB5 #x00C1) ; LATIN CAPITAL LETTER A WITH ACUTE
(#xB6 #x00C2) ; LATIN CAPITAL LETTER A WITH CIRCUMFLEX
(#xB7 #x011A) ; LATIN CAPITAL LETTER E WITH CARON
(#xB8 #x015E) ; LATIN CAPITAL LETTER S WITH CEDILLA
(#xB9 #x2563) ; BOX DRAWINGS DOUBLE VERTICAL AND LEFT
(#xBA #x2551) ; BOX DRAWINGS DOUBLE VERTICAL
(#xBB #x2557) ; BOX DRAWINGS DOUBLE DOWN AND LEFT
(#xBC #x255D) ; BOX DRAWINGS DOUBLE UP AND LEFT
(#xBD #x017B) ; LATIN CAPITAL LETTER Z WITH DOT ABOVE
(#xBE #x017C) ; LATIN SMALL LETTER Z WITH DOT ABOVE
(#xBF #x2510) ; BOX DRAWINGS LIGHT DOWN AND LEFT
(#xC0 #x2514) ; BOX DRAWINGS LIGHT UP AND RIGHT
(#xC1 #x2534) ; BOX DRAWINGS LIGHT UP AND HORIZONTAL
(#xC2 #x252C) ; BOX DRAWINGS LIGHT DOWN AND HORIZONTAL
(#xC3 #x251C) ; BOX DRAWINGS LIGHT VERTICAL AND RIGHT
(#xC4 #x2500) ; BOX DRAWINGS LIGHT HORIZONTAL
(#xC5 #x253C) ; BOX DRAWINGS LIGHT VERTICAL AND HORIZONTAL
(#xC6 #x0102) ; LATIN CAPITAL LETTER A WITH BREVE
(#xC7 #x0103) ; LATIN SMALL LETTER A WITH BREVE
(#xC8 #x255A) ; BOX DRAWINGS DOUBLE UP AND RIGHT
(#xC9 #x2554) ; BOX DRAWINGS DOUBLE DOWN AND RIGHT
(#xCA #x2569) ; BOX DRAWINGS DOUBLE UP AND HORIZONTAL
(#xCB #x2566) ; BOX DRAWINGS DOUBLE DOWN AND HORIZONTAL
(#xCC #x2560) ; BOX DRAWINGS DOUBLE VERTICAL AND RIGHT
(#xCD #x2550) ; BOX DRAWINGS DOUBLE HORIZONTAL
(#xCE #x256C) ; BOX DRAWINGS DOUBLE VERTICAL AND HORIZONTAL
(#xCF #x00A4) ; CURRENCY SIGN
(#xD0 #x0111) ; LATIN SMALL LETTER D WITH STROKE
(#xD1 #x0110) ; LATIN CAPITAL LETTER D WITH STROKE
(#xD2 #x010E) ; LATIN CAPITAL LETTER D WITH CARON
(#xD3 #x00CB) ; LATIN CAPITAL LETTER E WITH DIAERESIS
(#xD4 #x010F) ; LATIN SMALL LETTER D WITH CARON
(#xD5 #x0147) ; LATIN CAPITAL LETTER N WITH CARON
(#xD6 #x00CD) ; LATIN CAPITAL LETTER I WITH ACUTE
(#xD7 #x00CE) ; LATIN CAPITAL LETTER I WITH CIRCUMFLEX
(#xD8 #x011B) ; LATIN SMALL LETTER E WITH CARON
(#xD9 #x2518) ; BOX DRAWINGS LIGHT UP AND LEFT
(#xDA #x250C) ; BOX DRAWINGS LIGHT DOWN AND RIGHT
(#xDB #x2588) ; FULL BLOCK
(#xDC #x2584) ; LOWER HALF BLOCK
(#xDD #x0162) ; LATIN CAPITAL LETTER T WITH CEDILLA
(#xDE #x016E) ; LATIN CAPITAL LETTER U WITH RING ABOVE
(#xDF #x2580) ; UPPER HALF BLOCK
(#xE0 #x00D3) ; LATIN CAPITAL LETTER O WITH ACUTE
(#xE1 #x00DF) ; LATIN SMALL LETTER SHARP S
(#xE2 #x00D4) ; LATIN CAPITAL LETTER O WITH CIRCUMFLEX
(#xE3 #x0143) ; LATIN CAPITAL LETTER N WITH ACUTE
(#xE4 #x0144) ; LATIN SMALL LETTER N WITH ACUTE
(#xE5 #x0148) ; LATIN SMALL LETTER N WITH CARON
(#xE6 #x0160) ; LATIN CAPITAL LETTER S WITH CARON
(#xE7 #x0161) ; LATIN SMALL LETTER S WITH CARON
(#xE8 #x0154) ; LATIN CAPITAL LETTER R WITH ACUTE
(#xE9 #x00DA) ; LATIN CAPITAL LETTER U WITH ACUTE
(#xEA #x0155) ; LATIN SMALL LETTER R WITH ACUTE
(#xEB #x0170) ; LATIN CAPITAL LETTER U WITH DOUBLE ACUTE
(#xEC #x00FD) ; LATIN SMALL LETTER Y WITH ACUTE
(#xED #x00DD) ; LATIN CAPITAL LETTER Y WITH ACUTE
(#xEE #x0163) ; LATIN SMALL LETTER T WITH CEDILLA
(#xEF #x00B4) ; ACUTE ACCENT
(#xF0 #x00AD) ; SOFT HYPHEN
(#xF1 #x02DD) ; DOUBLE ACUTE ACCENT
(#xF2 #x02DB) ; OGONEK
(#xF3 #x02C7) ; CARON
(#xF4 #x02D8) ; BREVE
(#xF5 #x00A7) ; SECTION SIGN
(#xF6 #x00F7) ; DIVISION SIGN
(#xF7 #x00B8) ; CEDILLA
(#xF8 #x00B0) ; DEGREE SIGN
(#xF9 #x00A8) ; DIAERESIS
(#xFA #x02D9) ; DOT ABOVE
(#xFB #x0171) ; LATIN SMALL LETTER U WITH DOUBLE ACUTE
(#xFC #x0158) ; LATIN CAPITAL LETTER R WITH CARON
(#xFD #x0159) ; LATIN SMALL LETTER R WITH CARON
(#xFE #x25A0) ; BLACK SQUARE
(#xFF #x00A0) ; NO-BREAK SPACE
)
do
(setf (elt *cp437->unicode* cp437) (code-char unicode))
(setf (gethash (code-char unicode) *unicode->cp437*)
(code-char cp437)))
(defmethod write-zipentry
(zip-writer name (data pathname)
&key (file-write-date (file-write-date data)) (deflate t)
(file-mode (file-mode data)))
(with-open-file (s data :element-type '(unsigned-byte 8))
(zip:write-zipentry zip-writer
name
s
:deflate deflate
:file-write-date file-write-date
:file-mode file-mode)))
(defun write-directory-zipentry
(zip-writer name pathname
&key (file-write-date (file-write-date pathname)) (deflate t)
(file-mode (file-mode pathname)))
(zip:write-zipentry zip-writer
name
(make-concatenated-stream)
:deflate deflate
:file-write-date file-write-date
:file-mode file-mode))
(defmethod write-zipentry
(z name (data stream) &key (file-write-date (file-write-date data))
(deflate t) (file-mode #o640))
(setf name (substitute #\/ #\\ name))
(with-latin1 ()
(let* ((s (zipwriter-stream z))
(header (make-local-header))
(entry (make-zipwriter-entry
:file-mode file-mode
:name name
:position (file-position s)
:header header)))
(multiple-value-bind (encoded-name utf8p)
(encode-name name)
(setf (file/signature header) #x04034b50)
(setf (file/version-needed-to-extract header) 20) ;version 2.0
(setf (file/flags header) (if utf8p 2048 0))
(setf (file/method header) (if deflate 8 0))
(multiple-value-bind (s min h d m y)
(decode-universal-time
(or file-write-date (encode-universal-time 0 0 0 1 1 1980 0)))
(setf (file/time header)
(logior (ash h 11) (ash min 5) (ash s -1)))
(setf (file/date header)
(logior (ash (- y 1980) 9) (ash m 5) d)))
(setf (file/crc header) 0)
(setf (file/compressed-size header) 0)
(setf (file/size header) 0)
(setf (file/name-length header) (length encoded-name))
(setf (file/extra-length header) 0)
(setf (zipwriter-tail z)
(setf (cdr (zipwriter-tail z)) (cons entry nil)))
(write-sequence header s)
(write-sequence encoded-name s)
(multiple-value-bind (nin nout crc)
(if deflate
(compress data s (zipwriter-compressor z))
(store data s))
(let ((descriptor (make-data-descriptor))
(fpos (file-position s)))
(setf (data/crc descriptor) crc)
(setf (data/compressed-size descriptor) nout)
(setf (data/size descriptor) nin)
;; record same values for central directory
(setf (file/crc header) crc)
(setf (file/compressed-size header) nout)
(setf (file/size header) nin)
(file-position s (+ (zipwriter-entry-position entry) 14))
(write-sequence descriptor s)
(file-position s fpos)
#+nil(write-sequence descriptor s)
))
name))))
(defun write-central-directory (z)
(with-latin1 ()
(let* ((s (zipwriter-stream z))
(pos (file-position s))
(n 0))
(dolist (e (cdr (zipwriter-head z)))
(incf n)
(let ((header (zipwriter-entry-header e))
(entry (make-directory-entry)))
(setf (cd/signature entry) #x02014b50)
(setf (cd/version-made-by entry) #x0314) ;dos compatible
(setf (cd/version-needed-to-extract entry)
(file/version-needed-to-extract header))
(setf (cd/flags entry) (file/flags header))
(setf (cd/method entry) (file/method header))
(setf (cd/time entry) (file/time header))
(setf (cd/date entry) (file/date header))
(setf (cd/crc entry) (file/crc header))
(setf (cd/compressed-size entry) (file/compressed-size header))
(setf (cd/size entry) (file/size header))
(setf (cd/name-length entry) (file/name-length header))
(setf (cd/extra-length entry) (file/extra-length header))
(setf (cd/comment-length entry) 0)
(setf (cd/disc-number entry) 0) ;XXX ?
(setf (cd/internal-attributes entry) 0)
(setf (cd/external-attributes entry)
(ash (zipwriter-entry-file-mode e) 16)) ;XXX directories
(setf (cd/offset entry) (zipwriter-entry-position e))
(write-sequence entry s)
(write-sequence (encode-name (zipwriter-entry-name e))
s)))
(let ((end (make-end-header)))
(setf (end/signature end) #x06054b50)
(setf (end/this-disc end) 0) ;?
(setf (end/central-directory-disc end) 0) ;?
(setf (end/disc-files end) n)
(setf (end/total-files end) n)
(setf (end/central-directory-size end) (- (file-position s) pos))
(setf (end/central-directory-offset end) pos)
(setf (end/comment-length end) 0)
(write-sequence end s)))))
(defun %zipfile-entry-contents (entry stream)
(with-latin1 ()
(let ((s (zipfile-entry-stream entry))
header)
(file-position s (zipfile-entry-offset entry))
(setf header (make-local-header s))
(assert (= (file/signature header) #x04034b50))
(file-position s (+ (file-position s)
(file/name-length header)
(file/extra-length header)))
(let ((in (make-instance 'truncating-stream
:input-handle s
:size (zipfile-entry-compressed-size entry)))
(outbuf nil)
out)
(if stream
(setf out stream)
(setf outbuf (make-byte-array (zipfile-entry-size entry))
out (make-buffer-output-stream outbuf)))
(ecase (file/method header)
(0 (store in out))
(8 (inflate in out)))
outbuf))))
(defun zipfile-entry-contents (entry &optional stream)
(if (pathnamep stream)
(with-open-file (s stream
:direction :output
:if-exists :supersede
:element-type '(unsigned-byte 8))
(%zipfile-entry-contents entry s))
(%zipfile-entry-contents entry stream)))
(defmacro with-zipfile ((file pathname &key force-utf-8) &body body)
`(let ((,file (open-zipfile ,pathname :force-utf-8 ,force-utf-8)))
(unwind-protect
(progn ,@body)
(close-zipfile ,file))))
(defmacro with-zipfile-stream ((file stream &key force-utf-8) &body body)
`(let ((,file (open-zipfile-from-stream ,stream :force-utf-8 ,force-utf-8)))
,@body))
(defun make-zipfile-writer (pathname &key (if-exists :error))
(with-latin1 ()
(let ((c (cons nil nil)))
(make-zipwriter
:stream (open pathname
:direction :output
:if-exists if-exists
:element-type '(unsigned-byte 8))
:compressor (make-instance 'salza2:deflate-compressor)
:head c
:tail c))))
(defun close-zipfile-writer (z)
(write-central-directory z)
(close (zipwriter-stream z)))
(defmacro with-output-to-zipfile
((var pathname &key (if-exists :error)) &body body)
`(let ((,var (make-zipfile-writer ,pathname :if-exists ,if-exists)))
(unwind-protect
(progn ,@body)
(close-zipfile-writer ,var))))
(defmacro do-zipfile-entries ((name entry zipfile) &body body)
(setf name (or name (gensym)))
(setf entry (or entry (gensym)))
`(block nil
(maphash (lambda (,name ,entry)
(declare (ignorable ,name ,entry))
,@body)
(zipfile-entries ,zipfile))))
(defun unzip (pathname target-directory &key (if-exists :error) verbose force-utf-8)
;; <Xof> "When reading[1] the value of any pathname component, conforming
;; programs should be prepared for the value to be :unspecific."
(when (set-difference (list (pathname-name target-directory)
(pathname-type target-directory))
'(nil :unspecific))
(error "pathname not a directory, lacks trailing slash?"))
(with-zipfile (zip pathname :force-utf-8 force-utf-8)
(do-zipfile-entries (name entry zip)
(let* (#+nil (name (ppcre:regex-replace-all "[/*?]" name "_"))
#+nil (name (subseq name 0 (min (length name) 128)))
(filename (merge-pathnames name target-directory)))
(ensure-directories-exist filename)
(unless (char= (elt name (1- (length name))) #\/)
(ecase verbose
((nil))
((t) (write-string name) (terpri))
(:dots (write-char #\.)))
(force-output)
(with-open-file
(s filename :direction :output :if-exists if-exists
:element-type '(unsigned-byte 8))
(zipfile-entry-contents entry s)))))))
(defun %directory-sorted (dir)
(sort (fad:list-directory dir) #'string<
:key #+sbcl #'sb-impl::native-namestring #-sbcl #'namestring))
(defun %file-write-date (f)
#+clisp (posix:file-stat-mtime (posix:file-stat f))
#-clisp (file-write-date f))
(defun %directory-namestring (d)
#+clisp (directory-namestring
(truename (concatenate 'string (princ-to-string d) "/")))
#-clisp (make-pathname
:host (pathname-host d)
:device (pathname-device d)
:defaults (directory-namestring d)))
(defun fix-enough-namestring (pathname &optional defaults)
(let ((x (enough-namestring pathname defaults)))
#+sbcl (sb-impl::native-namestring (pathname x))
#-sbcl x))
(defun zip (pathname source-directory &key (if-exists :error) skip-directories-p)
(let ((base (%directory-namestring (merge-pathnames source-directory))))
(with-output-to-zipfile (zip pathname :if-exists if-exists)
(labels ((recurse (d)
(dolist (f (%directory-sorted d))
(cond
((fad:directory-pathname-p f)
(unless skip-directories-p
(write-directory-zipentry
zip (fix-enough-namestring f base) f))
(recurse (fad:pathname-as-directory f)))
((or (pathname-name f) (pathname-type f))
(with-open-file (s f :element-type '(unsigned-byte 8))
(write-zipentry
zip
(fix-enough-namestring f base)
s :file-write-date (%file-write-date f)
:file-mode (file-mode f))))))))
(recurse (fad:pathname-as-directory source-directory))))))
(defun rezip
(output-pathname reference-pathname source-directory
&key (if-exists :error))
(with-zipfile (ref reference-pathname)
(let ((entries '())
(base source-directory))
(do-zipfile-entries (name entry ref)
(push entry entries))
(setf entries (sort entries #'< :key #'zipfile-entry-offset))
(with-output-to-zipfile (out output-pathname :if-exists if-exists)
(dolist (entry entries)
(let ((f (merge-pathnames (zipfile-entry-name entry) base)))
(if (fad:directory-pathname-p f)
(write-directory-zipentry
out (fix-enough-namestring f base) f)
(with-open-file (s f :element-type '(unsigned-byte 8))
(write-zipentry
out
(zipfile-entry-name entry)
s
:file-write-date (zipfile-entry-date entry)
:file-mode (zipfile-entry-mode entry))))))))))
|