1;;; esh-util.el --- general utilities 2 3;; Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 4;; 2005, 2006, 2007 Free Software Foundation, Inc. 5 6;; Author: John Wiegley <johnw@gnu.org> 7 8;; This file is part of GNU Emacs. 9 10;; GNU Emacs is free software; you can redistribute it and/or modify 11;; it under the terms of the GNU General Public License as published by 12;; the Free Software Foundation; either version 2, or (at your option) 13;; any later version. 14 15;; GNU Emacs is distributed in the hope that it will be useful, 16;; but WITHOUT ANY WARRANTY; without even the implied warranty of 17;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18;; GNU General Public License for more details. 19 20;; You should have received a copy of the GNU General Public License 21;; along with GNU Emacs; see the file COPYING. If not, write to the 22;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 23;; Boston, MA 02110-1301, USA. 24 25(provide 'esh-util) 26 27(eval-when-compile (require 'esh-maint)) 28 29(defgroup eshell-util nil 30 "This is general utility code, meant for use by Eshell itself." 31 :tag "General utilities" 32 :group 'eshell) 33 34;;; Commentary: 35 36(require 'pp) 37 38;;; User Variables: 39 40(defcustom eshell-stringify-t t 41 "*If non-nil, the string representation of t is 't'. 42If nil, t will be represented only in the exit code of the function, 43and not printed as a string. This causes Lisp functions to behave 44similarly to external commands, as far as successful result output." 45 :type 'boolean 46 :group 'eshell-util) 47 48(defcustom eshell-group-file "/etc/group" 49 "*If non-nil, the name of the group file on your system." 50 :type '(choice (const :tag "No group file" nil) file) 51 :group 'eshell-util) 52 53(defcustom eshell-passwd-file "/etc/passwd" 54 "*If non-nil, the name of the passwd file on your system." 55 :type '(choice (const :tag "No passwd file" nil) file) 56 :group 'eshell-util) 57 58(defcustom eshell-hosts-file "/etc/hosts" 59 "*The name of the /etc/hosts file." 60 :type '(choice (const :tag "No hosts file" nil) file) 61 :group 'eshell-util) 62 63(defcustom eshell-handle-errors t 64 "*If non-nil, Eshell will handle errors itself. 65Setting this to nil is offered as an aid to debugging only." 66 :type 'boolean 67 :group 'eshell-util) 68 69(defcustom eshell-private-file-modes 384 ; umask 177 70 "*The file-modes value to use for creating \"private\" files." 71 :type 'integer 72 :group 'eshell-util) 73 74(defcustom eshell-private-directory-modes 448 ; umask 077 75 "*The file-modes value to use for creating \"private\" directories." 76 :type 'integer 77 :group 'eshell-util) 78 79(defcustom eshell-tar-regexp 80 "\\.t\\(ar\\(\\.\\(gz\\|bz2\\|Z\\)\\)?\\|gz\\|a[zZ]\\|z2\\)\\'" 81 "*Regular expression used to match tar file names." 82 :type 'regexp 83 :group 'eshell-util) 84 85(defcustom eshell-convert-numeric-arguments t 86 "*If non-nil, converting arguments of numeric form to Lisp numbers. 87Numeric form is tested using the regular expression 88`eshell-number-regexp'. 89 90NOTE: If you find that numeric conversions are intefering with the 91specification of filenames (for example, in calling `find-file', or 92some other Lisp function that deals with files, not numbers), add the 93following in your .emacs file: 94 95 (put 'find-file 'eshell-no-numeric-conversions t) 96 97Any function with the property `eshell-no-numeric-conversions' set to 98a non-nil value, will be passed strings, not numbers, even when an 99argument matches `eshell-number-regexp'." 100 :type 'boolean 101 :group 'eshell-util) 102 103(defcustom eshell-number-regexp "-?\\([0-9]*\\.\\)?[0-9]+\\(e[-0-9.]+\\)?" 104 "*Regular expression used to match numeric arguments. 105If `eshell-convert-numeric-arguments' is non-nil, and an argument 106matches this regexp, it will be converted to a Lisp number, using the 107function `string-to-number'." 108 :type 'regexp 109 :group 'eshell-util) 110 111(defcustom eshell-ange-ls-uids nil 112 "*List of user/host/id strings, used to determine remote ownership." 113 :type '(repeat (cons :tag "Host for User/UID map" 114 (string :tag "Hostname") 115 (repeat (cons :tag "User/UID List" 116 (string :tag "Username") 117 (repeat :tag "UIDs" string))))) 118 :group 'eshell-util) 119 120;;; Internal Variables: 121 122(defvar eshell-group-names nil 123 "A cache to hold the names of groups.") 124 125(defvar eshell-group-timestamp nil 126 "A timestamp of when the group file was read.") 127 128(defvar eshell-user-names nil 129 "A cache to hold the names of users.") 130 131(defvar eshell-user-timestamp nil 132 "A timestamp of when the user file was read.") 133 134(defvar eshell-host-names nil 135 "A cache the names of frequently accessed hosts.") 136 137(defvar eshell-host-timestamp nil 138 "A timestamp of when the hosts file was read.") 139 140;;; Functions: 141 142(defsubst eshell-under-xemacs-p () 143 "Return non-nil if we are running under XEmacs." 144 (boundp 'xemacs-logo)) 145 146(defsubst eshell-under-windows-p () 147 "Return non-nil if we are running under MS-DOS/Windows." 148 (memq system-type '(ms-dos windows-nt))) 149 150(defmacro eshell-condition-case (tag form &rest handlers) 151 "Like `condition-case', but only if `eshell-pass-through-errors' is nil." 152 (if eshell-handle-errors 153 `(condition-case ,tag 154 ,form 155 ,@handlers) 156 form)) 157 158(put 'eshell-condition-case 'lisp-indent-function 2) 159 160(defmacro eshell-deftest (module name label &rest forms) 161 (if (and (fboundp 'cl-compiling-file) (cl-compiling-file)) 162 nil 163 (let ((fsym (intern (concat "eshell-test--" (symbol-name name))))) 164 `(eval-when-compile 165 (ignore 166 (defun ,fsym () ,label 167 (eshell-run-test (quote ,module) (quote ,fsym) ,label 168 (quote (progn ,@forms))))))))) 169 170(put 'eshell-deftest 'lisp-indent-function 2) 171 172(defun eshell-find-delimiter 173 (open close &optional bound reverse-p backslash-p) 174 "From point, find the CLOSE delimiter corresponding to OPEN. 175The matching is bounded by BOUND. 176If REVERSE-P is non-nil, process the region backwards. 177If BACKSLASH-P is non-nil, and OPEN and CLOSE are the same character, 178then quoting is done by a backslash, rather than a doubled delimiter." 179 (save-excursion 180 (let ((depth 1) 181 (bound (or bound (point-max)))) 182 (if (if reverse-p 183 (eq (char-before) close) 184 (eq (char-after) open)) 185 (forward-char (if reverse-p -1 1))) 186 (while (and (> depth 0) 187 (funcall (if reverse-p '> '<) (point) bound)) 188 (let ((c (if reverse-p (char-before) (char-after))) nc) 189 (cond ((and (not reverse-p) 190 (or (not (eq open close)) 191 backslash-p) 192 (eq c ?\\) 193 (setq nc (char-after (1+ (point)))) 194 (or (eq nc open) (eq nc close))) 195 (forward-char 1)) 196 ((and reverse-p 197 (or (not (eq open close)) 198 backslash-p) 199 (or (eq c open) (eq c close)) 200 (eq (char-before (1- (point))) 201 ?\\)) 202 (forward-char -1)) 203 ((eq open close) 204 (if (eq c open) 205 (if (and (not backslash-p) 206 (eq (if reverse-p 207 (char-before (1- (point))) 208 (char-after (1+ (point)))) open)) 209 (forward-char (if reverse-p -1 1)) 210 (setq depth (1- depth))))) 211 ((= c open) 212 (setq depth (+ depth (if reverse-p -1 1)))) 213 ((= c close) 214 (setq depth (+ depth (if reverse-p 1 -1)))))) 215 (forward-char (if reverse-p -1 1))) 216 (if (= depth 0) 217 (if reverse-p (point) (1- (point))))))) 218 219(defun eshell-convert (string) 220 "Convert STRING into a more native looking Lisp object." 221 (if (not (stringp string)) 222 string 223 (let ((len (length string))) 224 (if (= len 0) 225 string 226 (if (eq (aref string (1- len)) ?\n) 227 (setq string (substring string 0 (1- len)))) 228 (if (string-match "\n" string) 229 (split-string string "\n") 230 (if (and eshell-convert-numeric-arguments 231 (string-match 232 (concat "\\`\\s-*" eshell-number-regexp 233 "\\s-*\\'") string)) 234 (string-to-number string) 235 string)))))) 236 237(defun eshell-sublist (l &optional n m) 238 "Return from LIST the N to M elements. 239If N or M is nil, it means the end of the list." 240 (let* ((a (copy-sequence l)) 241 result) 242 (if (and m (consp (nthcdr m a))) 243 (setcdr (nthcdr m a) nil)) 244 (if n 245 (setq a (nthcdr n a)) 246 (setq n (1- (length a)) 247 a (last a))) 248 a)) 249 250(defun eshell-split-path (path) 251 "Split a path into multiple subparts." 252 (let ((len (length path)) 253 (i 0) (li 0) 254 parts) 255 (if (and (eshell-under-windows-p) 256 (> len 2) 257 (eq (aref path 0) ?/) 258 (eq (aref path 1) ?/)) 259 (setq i 2)) 260 (while (< i len) 261 (if (and (eq (aref path i) ?/) 262 (not (get-text-property i 'escaped path))) 263 (setq parts (cons (if (= li i) "/" 264 (substring path li (1+ i))) parts) 265 li (1+ i))) 266 (setq i (1+ i))) 267 (if (< li i) 268 (setq parts (cons (substring path li i) parts))) 269 (if (and (eshell-under-windows-p) 270 (string-match "\\`[A-Za-z]:\\'" (car (last parts)))) 271 (setcar (last parts) (concat (car (last parts)) "/"))) 272 (nreverse parts))) 273 274(defun eshell-to-flat-string (value) 275 "Make value a string. If separated by newlines change them to spaces." 276 (let ((text (eshell-stringify value))) 277 (if (string-match "\n+\\'" text) 278 (setq text (replace-match "" t t text))) 279 (while (string-match "\n+" text) 280 (setq text (replace-match " " t t text))) 281 text)) 282 283(defmacro eshell-for (for-var for-list &rest forms) 284 "Iterate through a list" 285 `(let ((list-iter ,for-list)) 286 (while list-iter 287 (let ((,for-var (car list-iter))) 288 ,@forms) 289 (setq list-iter (cdr list-iter))))) 290 291(put 'eshell-for 'lisp-indent-function 2) 292 293(defun eshell-flatten-list (args) 294 "Flatten any lists within ARGS, so that there are no sublists." 295 (let ((new-list (list t))) 296 (eshell-for a args 297 (if (and (listp a) 298 (listp (cdr a))) 299 (nconc new-list (eshell-flatten-list a)) 300 (nconc new-list (list a)))) 301 (cdr new-list))) 302 303(defun eshell-uniqify-list (l) 304 "Remove occurring multiples in L. You probably want to sort first." 305 (let ((m l)) 306 (while m 307 (while (and (cdr m) 308 (string= (car m) 309 (cadr m))) 310 (setcdr m (cddr m))) 311 (setq m (cdr m)))) 312 l) 313 314(defun eshell-stringify (object) 315 "Convert OBJECT into a string value." 316 (cond 317 ((stringp object) object) 318 ((and (listp object) 319 (not (eq object nil))) 320 (let ((string (pp-to-string object))) 321 (substring string 0 (1- (length string))))) 322 ((numberp object) 323 (number-to-string object)) 324 (t 325 (unless (and (eq object t) 326 (not eshell-stringify-t)) 327 (pp-to-string object))))) 328 329(defsubst eshell-stringify-list (args) 330 "Convert each element of ARGS into a string value." 331 (mapcar 'eshell-stringify args)) 332 333(defsubst eshell-flatten-and-stringify (&rest args) 334 "Flatten and stringify all of the ARGS into a single string." 335 (mapconcat 'eshell-stringify (eshell-flatten-list args) " ")) 336 337;; the next two are from GNUS, and really should be made part of Emacs 338;; some day 339(defsubst eshell-time-less-p (t1 t2) 340 "Say whether time T1 is less than time T2." 341 (or (< (car t1) (car t2)) 342 (and (= (car t1) (car t2)) 343 (< (nth 1 t1) (nth 1 t2))))) 344 345(defsubst eshell-time-to-seconds (time) 346 "Convert TIME to a floating point number." 347 (+ (* (car time) 65536.0) 348 (cadr time) 349 (/ (or (car (cdr (cdr time))) 0) 1000000.0))) 350 351(defsubst eshell-directory-files (regexp &optional directory) 352 "Return a list of files in the given DIRECTORY matching REGEXP." 353 (directory-files (or directory default-directory) 354 directory regexp)) 355 356(defun eshell-regexp-arg (prompt) 357 "Return list of regexp and prefix arg using PROMPT." 358 (let* (;; Don't clobber this. 359 (last-command last-command) 360 (regexp (read-from-minibuffer prompt nil nil nil 361 'minibuffer-history-search-history))) 362 (list (if (string-equal regexp "") 363 (setcar minibuffer-history-search-history 364 (nth 1 minibuffer-history-search-history)) 365 regexp) 366 (prefix-numeric-value current-prefix-arg)))) 367 368(defun eshell-printable-size (filesize &optional human-readable 369 block-size use-colors) 370 "Return a printable FILESIZE." 371 (let ((size (float (or filesize 0)))) 372 (if human-readable 373 (if (< size human-readable) 374 (if (= (round size) 0) 375 "0" 376 (if block-size 377 "1.0k" 378 (format "%.0f" size))) 379 (setq size (/ size human-readable)) 380 (if (< size human-readable) 381 (if (<= size 9.94) 382 (format "%.1fk" size) 383 (format "%.0fk" size)) 384 (setq size (/ size human-readable)) 385 (if (< size human-readable) 386 (let ((str (if (<= size 9.94) 387 (format "%.1fM" size) 388 (format "%.0fM" size)))) 389 (if use-colors 390 (put-text-property 0 (length str) 391 'face 'bold str)) 392 str) 393 (setq size (/ size human-readable)) 394 (if (< size human-readable) 395 (let ((str (if (<= size 9.94) 396 (format "%.1fG" size) 397 (format "%.0fG" size)))) 398 (if use-colors 399 (put-text-property 0 (length str) 400 'face 'bold-italic str)) 401 str))))) 402 (if block-size 403 (setq size (/ size block-size))) 404 (format "%.0f" size)))) 405 406(defun eshell-winnow-list (entries exclude &optional predicates) 407 "Pare down the ENTRIES list using the EXCLUDE regexp, and PREDICATES. 408The original list is not affected. If the result is only one element 409long, it will be returned itself, rather than returning a one-element 410list." 411 (let ((flist (list t)) 412 valid p listified) 413 (unless (listp entries) 414 (setq entries (list entries) 415 listified t)) 416 (eshell-for entry entries 417 (unless (and exclude (string-match exclude entry)) 418 (setq p predicates valid (null p)) 419 (while p 420 (if (funcall (car p) entry) 421 (setq valid t) 422 (setq p nil valid nil)) 423 (setq p (cdr p))) 424 (when valid 425 (nconc flist (list entry))))) 426 (if listified 427 (cadr flist) 428 (cdr flist)))) 429 430(defsubst eshell-redisplay () 431 "Allow Emacs to redisplay buffers." 432 ;; for some strange reason, Emacs 21 is prone to trigger an 433 ;; "args out of range" error in `sit-for', if this function 434 ;; runs while point is in the minibuffer and the users attempt 435 ;; to use completion. Don't ask me. 436 (ignore-errors (sit-for 0 0))) 437 438(defun eshell-read-passwd-file (file) 439 "Return an alist correlating gids to group names in FILE." 440 (let (names) 441 (when (file-readable-p file) 442 (with-temp-buffer 443 (insert-file-contents file) 444 (goto-char (point-min)) 445 (while (not (eobp)) 446 (let* ((fields 447 (split-string (buffer-substring 448 (point) (progn (end-of-line) 449 (point))) ":"))) 450 (if (and (and fields (nth 0 fields) (nth 2 fields)) 451 (not (assq (string-to-number (nth 2 fields)) names))) 452 (setq names (cons (cons (string-to-number (nth 2 fields)) 453 (nth 0 fields)) 454 names)))) 455 (forward-line)))) 456 names)) 457 458(defun eshell-read-passwd (file result-var timestamp-var) 459 "Read the contents of /etc/passwd for user names." 460 (if (or (not (symbol-value result-var)) 461 (not (symbol-value timestamp-var)) 462 (eshell-time-less-p 463 (symbol-value timestamp-var) 464 (nth 5 (file-attributes file)))) 465 (progn 466 (set result-var (eshell-read-passwd-file file)) 467 (set timestamp-var (current-time)))) 468 (symbol-value result-var)) 469 470(defun eshell-read-group-names () 471 "Read the contents of /etc/group for group names." 472 (if eshell-group-file 473 (eshell-read-passwd eshell-group-file 'eshell-group-names 474 'eshell-group-timestamp))) 475 476(defsubst eshell-group-id (name) 477 "Return the user id for user NAME." 478 (car (rassoc name (eshell-read-group-names)))) 479 480(defsubst eshell-group-name (gid) 481 "Return the group name for the given GID." 482 (cdr (assoc gid (eshell-read-group-names)))) 483 484(defun eshell-read-user-names () 485 "Read the contents of /etc/passwd for user names." 486 (if eshell-passwd-file 487 (eshell-read-passwd eshell-passwd-file 'eshell-user-names 488 'eshell-user-timestamp))) 489 490(defsubst eshell-user-id (name) 491 "Return the user id for user NAME." 492 (car (rassoc name (eshell-read-user-names)))) 493 494(defalias 'eshell-user-name 'user-login-name) 495 496(defun eshell-read-hosts-file (filename) 497 "Read in the hosts from the /etc/hosts file." 498 (let (hosts) 499 (with-temp-buffer 500 (insert-file-contents eshell-hosts-file) 501 (goto-char (point-min)) 502 (while (re-search-forward 503 "^\\(\\S-+\\)\\s-+\\(\\S-+\\)\\(\\s-*\\(\\S-+\\)\\)?" nil t) 504 (if (match-string 1) 505 (add-to-list 'hosts (match-string 1))) 506 (if (match-string 2) 507 (add-to-list 'hosts (match-string 2))) 508 (if (match-string 4) 509 (add-to-list 'hosts (match-string 4))))) 510 (sort hosts 'string-lessp))) 511 512(defun eshell-read-hosts (file result-var timestamp-var) 513 "Read the contents of /etc/passwd for user names." 514 (if (or (not (symbol-value result-var)) 515 (not (symbol-value timestamp-var)) 516 (eshell-time-less-p 517 (symbol-value timestamp-var) 518 (nth 5 (file-attributes file)))) 519 (progn 520 (set result-var (eshell-read-hosts-file file)) 521 (set timestamp-var (current-time)))) 522 (symbol-value result-var)) 523 524(defun eshell-read-host-names () 525 "Read the contents of /etc/hosts for host names." 526 (if eshell-hosts-file 527 (eshell-read-hosts eshell-hosts-file 'eshell-host-names 528 'eshell-host-timestamp))) 529 530(unless (fboundp 'line-end-position) 531 (defsubst line-end-position (&optional N) 532 (save-excursion (end-of-line N) (point)))) 533 534(unless (fboundp 'line-beginning-position) 535 (defsubst line-beginning-position (&optional N) 536 (save-excursion (beginning-of-line N) (point)))) 537 538(unless (fboundp 'subst-char-in-string) 539 (defun subst-char-in-string (fromchar tochar string &optional inplace) 540 "Replace FROMCHAR with TOCHAR in STRING each time it occurs. 541Unless optional argument INPLACE is non-nil, return a new string." 542 (let ((i (length string)) 543 (newstr (if inplace string (copy-sequence string)))) 544 (while (> i 0) 545 (setq i (1- i)) 546 (if (eq (aref newstr i) fromchar) 547 (aset newstr i tochar))) 548 newstr))) 549 550(defsubst eshell-copy-environment () 551 "Return an unrelated copy of `process-environment'." 552 (mapcar 'concat process-environment)) 553 554(defun eshell-subgroups (groupsym) 555 "Return all of the subgroups of GROUPSYM." 556 (let ((subgroups (get groupsym 'custom-group)) 557 (subg (list t))) 558 (while subgroups 559 (if (eq (cadr (car subgroups)) 'custom-group) 560 (nconc subg (list (caar subgroups)))) 561 (setq subgroups (cdr subgroups))) 562 (cdr subg))) 563 564(defmacro eshell-with-file-modes (modes &rest forms) 565 "Evaluate, with file-modes set to MODES, the given FORMS." 566 `(let ((modes (default-file-modes))) 567 (set-default-file-modes ,modes) 568 (unwind-protect 569 (progn ,@forms) 570 (set-default-file-modes modes)))) 571 572(defmacro eshell-with-private-file-modes (&rest forms) 573 "Evaluate FORMS with private file modes set." 574 `(eshell-with-file-modes ,eshell-private-file-modes ,@forms)) 575 576(defsubst eshell-make-private-directory (dir &optional parents) 577 "Make DIR with file-modes set to `eshell-private-directory-modes'." 578 (eshell-with-file-modes eshell-private-directory-modes 579 (make-directory dir parents))) 580 581(defsubst eshell-substring (string sublen) 582 "Return the beginning of STRING, up to SUBLEN bytes." 583 (if string 584 (if (> (length string) sublen) 585 (substring string 0 sublen) 586 string))) 587 588(unless (fboundp 'directory-files-and-attributes) 589 (defun directory-files-and-attributes (directory &optional full match nosort) 590 "Return a list of names of files and their attributes in DIRECTORY. 591There are three optional arguments: 592If FULL is non-nil, return absolute file names. Otherwise return names 593 that are relative to the specified directory. 594If MATCH is non-nil, mention only file names that match the regexp MATCH. 595If NOSORT is non-nil, the list is not sorted--its order is unpredictable. 596 NOSORT is useful if you plan to sort the result yourself." 597 (let ((directory (expand-file-name directory)) ange-cache) 598 (mapcar 599 (function 600 (lambda (file) 601 (cons file (eshell-file-attributes (expand-file-name file directory))))) 602 (directory-files directory full match nosort))))) 603 604(eval-when-compile 605 (defvar ange-cache)) 606 607(defun eshell-directory-files-and-attributes (dir &optional full match nosort) 608 "Make sure to use the handler for `directory-file-and-attributes'." 609 (let* ((dir (expand-file-name dir)) 610 (dfh (find-file-name-handler dir 'directory-files))) 611 (if (not dfh) 612 (directory-files-and-attributes dir full match nosort) 613 (let ((files (funcall dfh 'directory-files dir full match nosort)) 614 (fah (find-file-name-handler dir 'file-attributes))) 615 (mapcar 616 (function 617 (lambda (file) 618 (cons file (if fah 619 (eshell-file-attributes 620 (expand-file-name file dir)) 621 (file-attributes (expand-file-name file dir)))))) 622 files))))) 623 624(defun eshell-current-ange-uids () 625 (if (string-match "/\\([^@]+\\)@\\([^:]+\\):" default-directory) 626 (let* ((host (match-string 2 default-directory)) 627 (user (match-string 1 default-directory)) 628 (host-users (assoc host eshell-ange-ls-uids))) 629 (when host-users 630 (setq host-users (cdr host-users)) 631 (cdr (assoc user host-users)))))) 632 633;; Add an autoload for parse-time-string 634(if (and (not (fboundp 'parse-time-string)) 635 (locate-library "parse-time")) 636 (autoload 'parse-time-string "parse-time")) 637 638(eval-when-compile 639 (load "ange-ftp" t)) 640 641(defun eshell-parse-ange-ls (dir) 642 (let (entry) 643 (with-temp-buffer 644 (insert (ange-ftp-ls dir "-la" nil)) 645 (goto-char (point-min)) 646 (if (looking-at "^total [0-9]+$") 647 (forward-line 1)) 648 ;; Some systems put in a blank line here. 649 (if (eolp) (forward-line 1)) 650 (while (looking-at 651 `,(concat "\\([dlscb-][rwxst-]+\\)" 652 "\\s-*" "\\([0-9]+\\)" "\\s-+" 653 "\\(\\S-+\\)" "\\s-+" 654 "\\(\\S-+\\)" "\\s-+" 655 "\\([0-9]+\\)" "\\s-+" "\\(.*\\)")) 656 (let* ((perms (match-string 1)) 657 (links (string-to-number (match-string 2))) 658 (user (match-string 3)) 659 (group (match-string 4)) 660 (size (string-to-number (match-string 5))) 661 (mtime 662 (if (fboundp 'parse-time-string) 663 (let ((moment (parse-time-string 664 (match-string 6)))) 665 (if (nth 0 moment) 666 (setcar (nthcdr 5 moment) 667 (nth 5 (decode-time (current-time)))) 668 (setcar (nthcdr 0 moment) 0) 669 (setcar (nthcdr 1 moment) 0) 670 (setcar (nthcdr 2 moment) 0)) 671 (apply 'encode-time moment)) 672 (ange-ftp-file-modtime (expand-file-name name dir)))) 673 (name (ange-ftp-parse-filename)) 674 symlink) 675 (if (string-match "\\(.+\\) -> \\(.+\\)" name) 676 (setq symlink (match-string 2 name) 677 name (match-string 1 name))) 678 (setq entry 679 (cons 680 (cons name 681 (list (if (eq (aref perms 0) ?d) 682 t 683 symlink) 684 links user group 685 nil mtime nil 686 size perms nil nil)) entry))) 687 (forward-line))) 688 entry)) 689 690(defun eshell-file-attributes (file) 691 "Return the attributes of FILE, playing tricks if it's over ange-ftp." 692 (let* ((file (expand-file-name file)) 693 (handler (find-file-name-handler file 'file-attributes)) 694 entry) 695 (if (not handler) 696 (file-attributes file) 697 (if (eq (find-file-name-handler (file-name-directory file) 698 'directory-files) 699 'ange-ftp-hook-function) 700 (let ((base (file-name-nondirectory file)) 701 (dir (file-name-directory file))) 702 (if (boundp 'ange-cache) 703 (setq entry (cdr (assoc base (cdr (assoc dir ange-cache)))))) 704 (unless entry 705 (setq entry (eshell-parse-ange-ls dir)) 706 (if (boundp 'ange-cache) 707 (setq ange-cache 708 (cons (cons dir entry) 709 ange-cache))) 710 (if entry 711 (let ((fentry (assoc base (cdr entry)))) 712 (if fentry 713 (setq entry (cdr fentry)) 714 (setq entry nil))))))) 715 (or entry (funcall handler 'file-attributes file))))) 716 717(defalias 'eshell-copy-tree 'copy-tree) 718 719(defsubst eshell-processp (proc) 720 "If the `processp' function does not exist, PROC is not a process." 721 (and (fboundp 'processp) (processp proc))) 722 723; (defun eshell-copy-file 724; (file newname &optional ok-if-already-exists keep-date) 725; "Copy FILE to NEWNAME. See docs for `copy-file'." 726; (let (copied) 727; (if (string-match "\\`\\([^:]+\\):\\(.*\\)" file) 728; (let ((front (match-string 1 file)) 729; (back (match-string 2 file)) 730; buffer) 731; (if (and front (string-match eshell-tar-regexp front) 732; (setq buffer (find-file-noselect front))) 733; (with-current-buffer buffer 734; (goto-char (point-min)) 735; (if (re-search-forward (concat " " (regexp-quote back) 736; "$") nil t) 737; (progn 738; (tar-copy (if (file-directory-p newname) 739; (expand-file-name 740; (file-name-nondirectory back) newname) 741; newname)) 742; (setq copied t)) 743; (error "%s not found in tar file %s" back front)))))) 744; (unless copied 745; (copy-file file newname ok-if-already-exists keep-date)))) 746 747; (defun eshell-file-attributes (filename) 748; "Return a list of attributes of file FILENAME. 749; See the documentation for `file-attributes'." 750; (let (result) 751; (when (string-match "\\`\\([^:]+\\):\\(.*\\)\\'" filename) 752; (let ((front (match-string 1 filename)) 753; (back (match-string 2 filename)) 754; buffer) 755; (when (and front (string-match eshell-tar-regexp front) 756; (setq buffer (find-file-noselect front))) 757; (with-current-buffer buffer 758; (goto-char (point-min)) 759; (when (re-search-forward (concat " " (regexp-quote back) 760; "\\s-*$") nil t) 761; (let* ((descrip (tar-current-descriptor)) 762; (tokens (tar-desc-tokens descrip))) 763; (setq result 764; (list 765; (cond 766; ((eq (tar-header-link-type tokens) 5) 767; t) 768; ((eq (tar-header-link-type tokens) t) 769; (tar-header-link-name tokens))) 770; 1 771; (tar-header-uid tokens) 772; (tar-header-gid tokens) 773; (tar-header-date tokens) 774; (tar-header-date tokens) 775; (tar-header-date tokens) 776; (tar-header-size tokens) 777; (concat 778; (cond 779; ((eq (tar-header-link-type tokens) 5) "d") 780; ((eq (tar-header-link-type tokens) t) "l") 781; (t "-")) 782; (tar-grind-file-mode (tar-header-mode tokens) 783; (make-string 9 ? ) 0)) 784; nil nil nil)))))))) 785; (or result 786; (file-attributes filename)))) 787 788;;; Code: 789 790;;; arch-tag: 70159778-5c7a-480a-bae4-3ad332fca19d 791;;; esh-util.el ends here 792