1 ;;; package-get.el --- Retrieve XEmacs package
3 ;; Copyright (C) 1998 by Pete Ware
5 ;; Author: Pete Ware <ware@cis.ohio-state.edu>
6 ;; Heavy-Modifications: Greg Klanderman <greg@alphatech.com>
7 ;; Jan Vroonhof <vroonhof@math.ethz.ch>
10 ;; This file is part of XEmacs.
12 ;; XEmacs is free software; you can redistribute it and/or modify it
13 ;; under the terms of the GNU General Public License as published by
14 ;; the Free Software Foundation; either version 2, or (at your option)
17 ;; XEmacs is distributed in the hope that it will be useful, but
18 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 ;; General Public License for more details.
22 ;; You should have received a copy of the GNU General Public License
23 ;; along with XEmacs; see the file COPYING. If not, write to the Free
24 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
27 ;;; Synched up with: Not in FSF
32 ;; Retrieve a package and any other required packages from an archive
35 ;; Note (JV): Most of this no longer aplies!
38 ;; A new XEmacs lisp-only release is generated with the following steps:
39 ;; 1. The maintainer runs some yet to be written program that
40 ;; generates all the dependency information. This should
41 ;; determine all the require and provide statements and associate
42 ;; them with a package.
43 ;; 2. All the packages are then bundled into their own tar balls
44 ;; (or whatever format)
45 ;; 3. Maintainer automatically generates a new `package-get-base'
46 ;; data structure which contains information such as the
47 ;; package name, the file to be retrieved, an md5 checksum,
48 ;; etc (see `package-get-base').
49 ;; 4. The maintainer posts an announcement with the new version
50 ;; of `package-get-base'.
51 ;; 5. A user/system manager saves this posting and runs
52 ;; `package-get-update' which uses the previously saved list
53 ;; of packages, `package-get-here' that the user/site
54 ;; wants to determine what new versions to download and
57 ;; A user/site manager can generate a new `package-get-here' structure
58 ;; by using `package-get-setup' which generates a customize like
59 ;; interface to the list of packages. The buffer looks something
62 ;; gnus - a mail and news reader
65 ;; [] Required by other [packages]
71 ;; [] Required by other [packages]
73 ;; Where `[]' indicates a toggle box
75 ;; - Clicking on "Always install" puts this into
76 ;; `package-get-here' list. "Needs updating" indicates a new
77 ;; version is available. Anything already in
78 ;; `package-get-here' has this enabled.
79 ;; - "Required by other" means some other packages are going to force
80 ;; this to be installed. Clicking on [packages] gives a list
81 ;; of packages that require this.
83 ;; The `package-get-base' should be installed in a file in
84 ;; `data-directory'. The `package-get-here' should be installed in
85 ;; site-lisp. Both are then read at run time.
88 ;; - Implement `package-get-setup'
89 ;; - Actually put `package-get-base' and `package-get-here' into
90 ;; files that are read.
91 ;; - Allow users to have their own packages that they want installed
93 ;; - SOMEONE needs to write the programs that generate the
94 ;; provides/requires database and makes it into a lisp data
95 ;; structure suitable for `package-get-base'
96 ;; - Handle errors such as no package providing a required symbol.
97 ;; - Tie this into the `require' function to download packages
104 (require 'package-admin)
105 ;; (require 'package-get-base)
107 (defgroup package-tools nil
108 "Tools to manipulate packages."
111 (defgroup package-get nil
112 "Automatic Package Fetcher and Installer."
113 :prefix "package-get"
114 :group 'package-tools)
117 (defvar package-get-base nil
118 "List of packages that are installed at this site.
119 For each element in the alist, car is the package name and the cdr is
120 a plist containing information about the package. Typical fields
121 kept in the plist are:
123 version - version of this package
124 provides - list of symbols provided
125 requires - list of symbols that are required.
126 These in turn are provided by other packages.
127 filename - name of the file.
128 size - size of the file (aka the bundled package)
129 md5sum - computed md5 checksum
130 description - What this package is for.
131 type - Whether this is a 'binary (default) or 'single file package
133 More fields may be added as needed. An example:
137 (version \"<version 2>\"
139 description \"what this package is about.\"
146 (version \"<version 1>\"
148 description \"what this package is about.\"
158 For version information, it is assumed things are listed in most
159 recent to least recent -- in other words, the version names don't have to
160 be lexically ordered. It is debatable if it makes sense to have more than
161 one version of a package available.")
163 (defcustom package-get-dir (temp-directory)
164 "*Where to store temporary files for staging."
165 :tag "Temporary directory"
169 (define-widget 'host-name 'string
173 (defcustom package-get-remote nil
174 "*List of remote sites to contact for downloading packages.
175 List format is '(site-name directory-on-site). Each site is tried in
176 order until the package is found. As a special case, `site-name' can be
177 `nil', in which case `directory-on-site' is treated as a local directory."
178 :tag "Package repository"
179 :type '(repeat (choice (list :tag "Local" (const :tag "Local" nil) directory )
180 (list :tag "Remote" host-name directory) ))
183 (defcustom package-get-download-sites
186 ("xemacs.org" "ftp.xemacs.org" "pub/xemacs/packages")
187 ("cso.uiuc.edu" "ftp.cso.uiuc.edu" "pub/packages/xemacs/packages")
190 ("unicamp.br" "ftp.unicamp.br" "pub/xemacs/packages")
193 ("sunsite.cnlab-switch.ch" "sunsite.cnlab-switch.ch" "mirror/xemacs/packages")
194 ("tu-darmstadt.de" "ftp.tu-darmstadt.de" "pub/editors/xemacs/packages")
195 ("sunsite.auc.dk" "sunsite.auc.dk" "pub/emacs/xemacs/packages")
196 ("pasteur.fr" "ftp.pasteur.fr" "pub/computing/xemacs/packages")
197 ("cenatls.cena.dgac.fr" "ftp.cenatls.cena.dgac.fr" "pub/Emacs/xemacs/packages")
198 ("kfki.hu" "ftp.kfki.hu" "pub/packages/xemacs/packages")
199 ("uniroma2.it" "ftp.uniroma2.it" "unix/misc/dist/XEMACS/packages")
200 ("icm.edu.pl" "ftp.icm.edu.pl" "pub/unix/editors/xemacs/packages")
201 ("sunet.se" "ftp.sunet.se" "pub/gnu/xemacs/packages")
202 ("doc.ic.ac.uk" "sunsite.doc.ic.ac.uk" "packages/xemacs/packages")
203 ("srcc.msu.su" "ftp1.srcc.msu.su" "mirror/ftp.xemacs.org/packages")
206 ("usyd.edu.au" "ftp.usyd.edu.au" "pub/Xemacs/packages")
207 ("netlab.is.tsukuba.ac.jp" "ftp.netlab.is.tsukuba.ac.jp" "pub/GNU/xemacs/packages")
208 ("jaist.ac.jp" "ftp.jaist.ac.jp" "pub/GNU/xemacs/packages")
209 ("ring.aist.go.jp" "ring.aist.go.jp" "pub/text/xemacs/packages")
210 ("ring.asahi-net.or.jp" "ring.asahi-net.or.jp" "pub/text/xemacs/packages")
211 ("SunSITE.sut.ac.jp" "SunSITE.sut.ac.jp" "pub/archives/packages/xemacs/packages")
212 ("dti.ad.jp" "ftp.dti.ad.jp" "pub/unix/editor/xemacs/packages")
213 ("kreonet.re.kr" "ftp.kreonet.re.kr" "pub/tools/emacs/xemacs/packages")
215 "*List of remote sites available for downloading packages.
216 List format is '(site-description site-name directory-on-site).
217 SITE-DESCRIPTION is a textual description of the site. SITE-NAME
218 is the internet address of the download site. DIRECTORY-ON-SITE
219 is the directory on the site in which packages may be found.
220 This variable is used to initialize `package-get-remote', the
221 variable actually used to specify package download sites."
222 :tag "Package download sites"
223 :type '(repeat (list hostname directory))
226 (defcustom package-get-remove-copy t
227 "*After copying and installing a package, if this is T, then remove the
228 copy. Otherwise, keep it around."
232 ;; #### it may make sense for this to be a list of names.
233 ;; #### also, should we rename "*base*" to "*index*" or "*db*"?
234 ;; "base" is a pretty poor name.
235 (defcustom package-get-base-filename "package-index.LATEST.pgp"
236 "*Name of the default package-get database file.
237 This may either be a relative path, in which case it is interpreted
238 with respect to `package-get-remote', or an absolute path."
242 (defcustom package-get-always-update nil
243 "*If Non-nil always make sure we are using the latest package index (base).
244 Otherwise respect the `force-current' argument of `package-get-require-base'."
248 (defcustom package-get-require-signed-base-updates t
249 "*If set to a non-nil value, require explicit user confirmation for updates
250 to the package-get database which cannot have their signature verified via PGP.
251 When nil, updates which are not PGP signed are allowed without confirmation."
255 (defvar package-get-was-current nil
256 "Non-nil we did our best to fetch a current database.")
259 ;Shouldn't this be in package-ui?
261 (defun package-get-download-menu ()
262 "Build the `Add Download Site' menu."
263 (mapcar (lambda (site)
265 `(package-ui-add-site (quote ,(cdr site)))
266 :style 'toggle :selected
267 `(member (quote ,(cdr site)) package-get-remote)))
268 package-get-download-sites))
271 (defun package-get-require-base (&optional force-current)
272 "Require that a package-get database has been loaded.
273 If the optional FORCE-CURRENT argument or the value of
274 `package-get-always-update' is Non-nil, try to update the database
275 from a location in `package-get-remote'. Otherwise a local copy is used
276 if available and remote access is never done.
278 Please use FORCE-CURRENT only when the user is explictly dealing with packages
279 and remote access is likely in the near future."
280 (setq force-current (or force-current package-get-always-update))
281 (unless (and (boundp 'package-get-base)
283 (or (not force-current) package-get-was-current))
284 (package-get-update-base nil force-current))
285 (if (or (not (boundp 'package-get-base))
286 (not package-get-base))
287 (error "Package-get database not loaded")
288 (setq package-get-was-current force-current)))
290 (defconst package-get-pgp-signed-begin-line "^-----BEGIN PGP SIGNED MESSAGE-----"
291 "Text for start of PGP signed messages.")
292 (defconst package-get-pgp-signature-begin-line "^-----BEGIN PGP SIGNATURE-----"
293 "Text for beginning of PGP signature.")
294 (defconst package-get-pgp-signature-end-line "^-----END PGP SIGNATURE-----"
295 "Text for end of PGP signature.")
298 (defun package-get-update-base-entry (entry)
299 "Update an entry in `package-get-base'."
300 (let ((existing (assq (car entry) package-get-base)))
302 (setcdr existing (cdr entry))
303 (setq package-get-base (cons entry package-get-base))
304 (package-get-custom-add-entry (car entry) (car (cdr entry))))))
306 (defun package-get-locate-file (file &optional nil-if-not-found no-remote)
307 "Locate an existing FILE with respect to `package-get-remote'.
308 If FILE is an absolute path or is not found, simply return FILE.
309 If optional argument NIL-IF-NOT-FOUND is non-nil, return nil
310 if FILE can not be located.
311 If NO-REMOTE is non-nil never search remote locations."
312 (if (file-name-absolute-p file)
314 (let ((entries package-get-remote)
317 (unless (and no-remote (caar entries))
318 (let ((expn (package-get-remote-filename (car entries) file)))
319 (if (and expn (file-exists-p expn))
322 (setq entries (cdr entries)))
324 (and (not nil-if-not-found)
327 (defun package-get-locate-index-file (no-remote)
328 "Locate the package-get index file. Do not return remote paths if NO-REMOTE
330 (or (package-get-locate-file package-get-base-filename t no-remote)
331 (locate-data-file package-get-base-filename)
332 package-get-base-filename))
334 (defvar package-get-user-package-location user-init-directory)
336 (defun package-get-maybe-save-index (filename)
337 "Offer to save the current buffer as the local package index file,
339 (let ((location (package-get-locate-index-file t)))
340 (unless (and filename (equal filename location))
341 (unless (equal (md5 (current-buffer))
343 (insert-file-contents location)
344 (md5 (current-buffer))))
345 (unless (file-writable-p location)
346 (setq location (expand-file-name package-get-base-filename
347 (expand-file-name "etc/" package-get-user-package-location))))
348 (when (y-or-n-p (concat "Update package index in" location "? "))
349 (write-file location))))))
353 (defun package-get-update-base (&optional db-file force-current)
354 "Update the package-get database file with entries from DB-FILE.
355 Unless FORCE-CURRENT is non-nil never try to update the database."
357 (let ((dflt (package-get-locate-index-file nil)))
358 (list (read-file-name "Load package-get database: "
359 (file-name-directory dflt)
362 (file-name-nondirectory dflt)))))
363 (setq db-file (expand-file-name (or db-file
364 (package-get-locate-index-file
365 (not force-current)))))
366 (if (not (file-exists-p db-file))
367 (error "Package-get database file `%s' does not exist" db-file))
368 (if (not (file-readable-p db-file))
369 (error "Package-get database file `%s' not readable" db-file))
370 (let ((buf (get-buffer-create "*package database*")))
375 (insert-file-contents-internal db-file)
376 (package-get-update-base-from-buffer buf)
377 (if (file-remote-p db-file)
378 (package-get-maybe-save-index db-file)))
382 (defun package-get-update-base-from-buffer (&optional buf)
383 "Update the package-get database with entries from BUFFER.
384 BUFFER defaults to the current buffer. This command can be
385 used interactively, for example from a mail or news buffer."
387 (setq buf (or buf (current-buffer)))
388 (let (content-beg content-end beg end)
391 (goto-char (point-min))
392 (setq content-beg (point))
393 (setq content-end (save-excursion (goto-char (point-max)) (point)))
394 (when (re-search-forward package-get-pgp-signed-begin-line nil t)
395 (setq beg (match-beginning 0))
396 (setq content-beg (match-end 0)))
397 (when (re-search-forward package-get-pgp-signature-begin-line nil t)
398 (setq content-end (match-beginning 0)))
399 (when (re-search-forward package-get-pgp-signature-end-line nil t)
401 (if (not (and content-beg content-end beg end))
402 (or (not package-get-require-signed-base-updates)
403 (yes-or-no-p "Package-get entries not PGP signed, continue? ")
404 (error "Package-get database not updated")))
405 (if (and content-beg content-end beg end)
406 (if (not (condition-case nil
407 (or (fboundp 'mc-pgp-verify-region)
408 (load-library "mc-pgp")
409 (fboundp 'mc-pgp-verify-region))
411 (or (not package-get-require-signed-base-updates)
413 "No mailcrypt; can't verify package-get DB signature, continue? ")
414 (error "Package-get database not updated"))))
416 (fboundp 'mc-pgp-verify-region)
419 (mc-pgp-verify-region beg end)
421 (and (string-match "No such file" (nth 2 err))
422 (or (not package-get-require-signed-base-updates)
424 (concat "Can't find PGP, continue without "
425 "package-get DB verification? ")))))
427 (error "Package-get PGP signature failed to verify"))
428 ;; ToDo: We shoud call package-get-maybe-save-index on the region
429 (package-get-update-base-entries content-beg content-end)
430 (message "Updated package-get database"))))
432 (defun package-get-update-base-entries (beg end)
433 "Update the package-get database with the entries found between
434 BEG and END in the current buffer."
437 (if (not (re-search-forward "^(package-get-update-base-entry" nil t))
438 (error "Buffer does not contain package-get database entries"))
441 (while (and (< (point) end)
442 (re-search-forward "^(package-get-update-base-entry" nil t))
444 (let ((entry (read (current-buffer))))
445 (if (or (not (consp entry))
446 (not (eq (car entry) 'package-get-update-base-entry)))
447 (error "Invalid package-get database entry found"))
448 (package-get-update-base-entry
449 (car (cdr (car (cdr entry)))))
450 (setq count (1+ count))))
451 (message "Got %d package-get database entries" count))))
454 (defun package-get-save-base (file)
455 "Write the package-get database to FILE.
457 Note: This database will be unsigned of course."
458 (interactive "FSave package-get database to: ")
459 (package-get-require-base t)
460 (let ((buf (get-buffer-create "*package database*")))
465 (goto-char (point-min))
466 (let ((entries package-get-base) entry plist)
467 (insert ";; Package Index file -- Do not edit manually.\n")
470 (setq entry (car entries))
471 (setq plist (car (cdr entry)))
472 (insert "(package-get-update-base-entry (quote\n")
473 (insert (format "(%s\n" (symbol-name (car entry))))
475 (insert (format " %s%s %S\n"
476 (if (eq plist (car (cdr entry))) "(" " ")
477 (symbol-name (car plist))
479 (setq plist (cdr (cdr plist))))
480 (insert "))\n))\n;;;@@@\n")
481 (setq entries (cdr entries))))
482 (insert ";; Package Index file ends here\n")
483 (write-region (point-min) (point-max) file))
486 (defun package-get-interactive-package-query (get-version package-symbol)
487 "Perform interactive querying for package and optional version.
488 Query for a version if GET-VERSION is non-nil. Return package name as
489 a symbol instead of a string if PACKAGE-SYMBOL is non-nil.
490 The return value is suitable for direct passing to `interactive'."
491 (package-get-require-base t)
492 (let ( (table (mapcar '(lambda (item)
493 (let ( (name (symbol-name (car item))) )
497 package package-symbol default-version version)
498 (save-window-excursion
499 (setq package (completing-read "Package: " table nil t))
500 (setq package-symbol (intern package))
503 (setq default-version
504 (package-get-info-prop
505 (package-get-info-version
506 (package-get-info-find-package package-get-base
510 (setq version (read-string "Version: " default-version))
514 (list package-symbol version)
515 (list package version))
518 (list package-symbol)
523 (defun package-get-delete-package (package &optional pkg-topdir)
524 "Delete an installation of PACKAGE below directory PKG-TOPDIR.
525 PACKAGE is a symbol, not a string.
526 This is just an interactive wrapper for `package-admin-delete-binary-package'."
527 (interactive (package-get-interactive-package-query nil t))
528 (package-admin-delete-binary-package package pkg-topdir))
531 (defun package-get-update-all ()
532 "Fetch and install the latest versions of all currently installed packages."
534 (package-get-require-base t)
537 (mapcar (lambda (pkg)
538 (if (not (package-get (car pkg) nil 'never))
539 (throw 'exit nil) ;; Bail out if error detected
541 packages-package-list)))
544 (defun package-get-all (package version &optional fetched-packages install-dir)
545 "Fetch PACKAGE with VERSION and all other required packages.
546 Uses `package-get-base' to determine just what is required and what
547 package provides that functionality. If VERSION is nil, retrieves
548 latest version. Optional argument FETCHED-PACKAGES is used to keep
549 track of packages already fetched. Optional argument INSTALL-DIR,
550 if non-nil, specifies the package directory where fetched packages
553 Returns nil upon error."
554 (interactive (package-get-interactive-package-query t nil))
555 (let* ((the-package (package-get-info-find-package package-get-base
557 (this-package (package-get-info-version
558 the-package version))
559 (this-requires (package-get-info-prop this-package 'requires))
562 (setq version (package-get-info-prop this-package 'version))
563 (unless (package-get-installedp package version)
564 (if (not (package-get package version nil install-dir))
566 (setq fetched-packages nil)
568 (setq fetched-packages
569 (append (list package)
570 (package-get-info-prop this-package 'provides)
572 ;; grab everything that this package requires plus recursively
573 ;; grab everything that the requires require. Keep track
574 ;; in `fetched-packages' the list of things provided -- this
575 ;; keeps us from going into a loop
577 (if (not (member (car this-requires) fetched-packages))
578 (let* ((reqd-package (package-get-package-provider
579 (car this-requires) t))
580 (reqd-version (cadr reqd-package))
581 (reqd-name (car reqd-package)))
583 (error "Unable to find a provider for %s"
584 (car this-requires)))
585 (if (not (setq fetched-packages
586 (package-get-all reqd-name reqd-version
591 (setq this-requires (cdr this-requires)))
597 (defun package-get-dependencies (packages)
598 "Compute dependencies for PACKAGES.
599 Uses `package-get-base' to determine just what is required and what
600 package provides that functionality. Returns the list of packages
601 required by PACKAGES."
602 (package-get-require-base t)
603 (let ((orig-packages packages)
604 dependencies provided)
606 (let* ((package (car packages))
607 (the-package (package-get-info-find-package
608 package-get-base package))
609 (this-package (package-get-info-version
611 (this-requires (package-get-info-prop this-package 'requires))
612 (new-depends (set-difference
615 (let* ((reqd-package (package-get-package-provider reqd))
616 (reqd-version (cadr reqd-package))
617 (reqd-name (car reqd-package)))
619 (error "Unable to find a provider for %s" reqd))
623 (this-provides (package-get-info-prop this-package 'provides)))
625 (union dependencies new-depends))
627 (union provided (union (list package) this-provides)))
629 (union new-depends (cdr packages)))))
630 (set-difference dependencies orig-packages)))
632 (defun package-get-load-package-file (lispdir file)
634 (setq pathname (expand-file-name file lispdir))
640 (message "Error loading package file \"%s\" %s!" pathname err)
644 (defun package-get-init-package (lispdir)
645 "Initialize the package.
646 This really assumes that the package has never been loaded. Updating
647 a newer package can cause problems, due to old, obsolete functions in
650 Return `t' upon complete success, `nil' if any errors occurred."
653 (file-accessible-directory-p lispdir))
655 ;; Add lispdir to load-path if it doesn't already exist.
656 ;; NOTE: this does not take symlinks, etc., into account.
657 (if (let ( (dirs load-path) )
660 (if (string-equal (car dirs) lispdir)
662 (setq dirs (cdr dirs))
665 (setq load-path (cons lispdir load-path)))
666 (if (not (package-get-load-package-file lispdir "auto-autoloads"))
667 (package-get-load-package-file lispdir "_pkg"))
673 (defun package-get (package &optional version conflict install-dir)
674 "Fetch PACKAGE from remote site.
675 Optional arguments VERSION indicates which version to retrieve, nil
676 means most recent version. CONFLICT indicates what happens if the
677 package is already installed. Valid values for CONFLICT are:
678 'always always retrieve the package even if it is already installed
679 'never do not retrieve the package if it is installed.
680 INSTALL-DIR, if non-nil, specifies the package directory where
681 fetched packages should be installed.
683 The value of `package-get-base' is used to determine what files should
684 be retrieved. The value of `package-get-remote' is used to determine
685 where a package should be retrieved from. The sites are tried in
686 order so one is better off listing easily reached sites first.
688 Once the package is retrieved, its md5 checksum is computed. If that
689 sum does not match that stored in `package-get-base' for this version
690 of the package, an error is signalled.
692 Returns `t' upon success, the symbol `error' if the package was
693 successfully installed but errors occurred during initialization, or
695 (interactive (package-get-interactive-package-query nil t))
698 (package-get-info-version
699 (package-get-info-find-package package-get-base
701 (latest (package-get-info-prop this-package 'version))
702 (installed (package-get-key package :version))
703 (this-requires (package-get-info-prop this-package 'requires))
705 (search-dirs package-get-remote)
706 (base-filename (package-get-info-prop this-package 'filename))
708 filenames full-package-filename)
709 (if (null this-package)
710 (if package-get-remote
711 (error "Couldn't find package %s with version %s"
713 (error "No download sites or local package locations specified.")))
714 (if (null base-filename)
715 (error "No filename associated with package %s, version %s"
718 (package-admin-get-install-dir package install-dir
719 (or (eq package 'mule-base) (memq 'mule-base this-requires))))
721 ;; If they asked for the latest using version=nil, don't get an older
722 ;; version than we already have.
724 (if (> (if (stringp installed)
725 (string-to-number installed)
728 (string-to-number latest)
730 (if (not (null version))
731 (warn "Installing %s package version %s, you had a newer version %s"
732 package latest installed)
733 (warn "Skipping %s package, you have a newer version %s"
735 (throw 'skip-update t))))
737 ;; Contrive a list of possible package filenames.
738 ;; Ugly. Is there a better way to do this?
739 (setq filenames (cons base-filename nil))
740 (if (string-match "^\\(..*\\)\.tar\.gz$" base-filename)
741 (setq filenames (append filenames
742 (list (concat (match-string 1 base-filename)
745 (setq version latest)
746 (unless (and (eq conflict 'never)
747 (package-get-installedp package version))
748 ;; Find the package from the search list in package-get-remote
749 ;; and copy it into the staging directory. Then validate
750 ;; the checksum. Finally, install the package.
752 (let (search-filenames current-dir-entry host dir current-filename
754 ;; In each search directory ...
756 (setq current-dir-entry (car search-dirs)
757 host (car current-dir-entry)
758 dir (car (cdr current-dir-entry))
759 search-filenames filenames
762 ;; Look for one of the possible package filenames ...
763 (while search-filenames
764 (setq current-filename (car search-filenames)
765 dest-filename (package-get-staging-dir current-filename))
767 ;; No host means look on the current system.
769 (setq full-package-filename
770 (substitute-in-file-name
771 (expand-file-name current-filename
772 (file-name-as-directory dir))))
775 ;; If it's already on the disk locally, and the size is
776 ;; greater than zero ...
777 ( (and (file-exists-p dest-filename)
779 ;; file-attributes could return -1 for LARGE files,
780 ;; but, hopefully, packages won't be that large.
781 (and (setq attrs (file-attributes dest-filename))
782 (> (nth 7 attrs) 0))))
783 (setq full-package-filename dest-filename)
786 ;; If the file exists on the remote system ...
787 ( (file-exists-p (package-get-remote-filename
788 current-dir-entry current-filename))
790 (setq full-package-filename dest-filename)
791 (message "Retrieving package `%s' ..."
794 (copy-file (package-get-remote-filename current-dir-entry
796 full-package-filename t)
800 ;; If we found it, we're done.
801 (if (and full-package-filename
802 (file-exists-p full-package-filename))
804 ;; Didn't find it. Try the next possible filename.
805 (setq search-filenames (cdr search-filenames))
807 ;; Try looking in the next possible directory ...
808 (setq search-dirs (cdr search-dirs))
812 (if (or (not full-package-filename)
813 (not (file-exists-p full-package-filename)))
814 (if package-get-remote
815 (error "Unable to find file %s" base-filename)
817 "No download sites or local package locations specified.")))
818 ;; Validate the md5 checksum
819 ;; Doing it with XEmacs removes the need for an external md5 program
820 (message "Validating checksum for `%s'..." package) (sit-for 0)
822 ;; What ever happened to i-f-c-literally
823 (let (file-name-handler-alist)
824 (insert-file-contents-internal full-package-filename))
825 (if (not (string= (md5 (current-buffer))
826 (package-get-info-prop this-package
828 (error "Package %s does not match md5 checksum" base-filename)))
830 (package-admin-delete-binary-package package install-dir)
832 (message "Installing package `%s' ..." package) (sit-for 0)
834 (package-admin-add-binary-package full-package-filename
838 ;; clear messages so that only messages from
839 ;; package-get-init-package are seen, below.
841 (if (package-get-init-package (package-admin-get-lispdir
842 install-dir package))
844 (message "Added package `%s'" package)
848 ;; display message only if there isn't already one.
849 (if (not (current-message))
851 (message "Added package `%s' (errors occurred)"
856 (setq package-status 'errors))
859 (message "Installation of package %s failed." base-filename)
861 (switch-to-buffer package-admin-temp-buffer)
862 (setq package-status nil)
865 (if (and found package-get-remove-copy)
866 (delete-file full-package-filename))
870 (defun package-get-info-find-package (which name)
871 "Look in WHICH for the package called NAME and return all the info
872 associated with it. See `package-get-base' for info on the format
875 To access fields returned from this, use
876 `package-get-info-version' to return information about particular a
877 version. Use `package-get-info-find-prop' to find particular property
878 from a version returned by `package-get-info-version'."
879 (interactive "xPackage list: \nsPackage Name: ")
881 (if (eq (caar which) name)
884 (package-get-info-find-package (cdr which) name)))))
886 (defun package-get-info-version (package version)
887 "In PACKAGE, return the plist associated with a particular VERSION of the
888 package. PACKAGE is typically as returned by
889 `package-get-info-find-package'. If VERSION is nil, then return the
890 first (aka most recent) version. Use `package-get-info-find-prop'
891 to retrieve a particular property from the value returned by this."
892 (interactive (package-get-interactive-package-query t t))
893 (while (and version package (not (string= (plist-get (car package) 'version) version)))
894 (setq package (cdr package)))
895 (if package (car package)))
897 (defun package-get-info-prop (package-version property)
898 "In PACKAGE-VERSION, return the value associated with PROPERTY.
899 PACKAGE-VERSION is typically returned by `package-get-info-version'
900 and PROPERTY is typically (although not limited to) one of the
903 version - version of this package
904 provides - list of symbols provided
905 requires - list of symbols that are required.
906 These in turn are provided by other packages.
907 size - size of the bundled package
908 md5sum - computed md5 checksum"
909 (interactive "xPackage Version: \nSProperty")
910 (plist-get package-version property))
912 (defun package-get-info-version-prop (package-list package version property)
913 "In PACKAGE-LIST, search for PACKAGE with this VERSION and return
915 (package-get-info-prop
916 (package-get-info-version
917 (package-get-info-find-package package-list package) version) property))
919 (defun package-get-set-version-prop (package-list package version
921 "A utility to make it easier to add a VALUE for a specific PROPERTY
922 in this VERSION of a specific PACKAGE kept in the PACKAGE-LIST.
923 Returns the modified PACKAGE-LIST. Any missing fields are created."
926 (defun package-get-staging-dir (filename)
927 "Return a good place to stash FILENAME when it is retrieved.
928 Use `package-get-dir' for directory to store stuff.
929 Creates `package-get-dir' it it doesn't exist."
930 (interactive "FPackage filename: ")
931 (if (not (file-exists-p package-get-dir))
932 (make-directory package-get-dir))
934 (file-name-nondirectory (or (and (fboundp 'efs-ftp-path)
935 (nth 2 (efs-ftp-path filename)))
937 (file-name-as-directory package-get-dir)))
939 (defun package-get-remote-filename (search filename)
940 "Return FILENAME as a remote filename.
941 It first checks if FILENAME already is a remote filename. If it is
942 not, then it uses the (car search) as the remote site-name and the (cadr
943 search) as the remote-directory and concatenates filename. In other
945 site-name:remote-directory/filename.
947 If (car search) is nil, (cadr search is interpreted as a local directory).
949 (if (file-remote-p filename)
951 (let ((dir (cadr search)))
952 (concat (when (car search)
954 (if (string-match "@" (car search))
958 (if (string-match "/$" dir)
964 (defun package-get-installedp (package version)
965 "Determine if PACKAGE with VERSION has already been installed.
966 I'm not sure if I want to do this by searching directories or checking
967 some built in variables. For now, use packages-package-list."
968 ;; Use packages-package-list which contains name and version
970 (package-get-info-find-package packages-package-list
972 (if (floatp version) version (string-to-number version))))
975 (defun package-get-package-provider (sym &optional force-current)
976 "Search for a package that provides SYM and return the name and
977 version. Searches in `package-get-base' for SYM. If SYM is a
978 consp, then it must match a corresponding (provide (SYM VERSION)) from
981 If FORCE-CURRENT is non-nil make sure the database is up to date. This might
982 lead to Emacs accessing remote sites."
983 (interactive "SSymbol: ")
984 (package-get-require-base force-current)
985 (let ((packages package-get-base)
988 (while (and (not done) packages)
989 (let* ((this-name (caar packages))
990 (this-package (cdr (car packages)))) ;strip off package name
991 (while (and (not done) this-package)
992 (if (or (eq this-name sym)
994 (package-get-info-prop (car this-package) 'version))
997 (package-get-info-prop (car this-package) 'provides)))
1000 (list (caar packages)
1001 (package-get-info-prop (car this-package) 'version))))
1002 (setq this-package (cdr this-package)))))
1003 (setq packages (cdr packages)))
1007 ;; customize interfaces.
1008 ;; The group is in this file so that custom loads includes this file.
1010 (defgroup packages nil
1011 "Configure XEmacs packages."
1015 (defun package-get-custom ()
1016 "Fetch and install the latest versions of all customized packages."
1018 (package-get-require-base t)
1019 (mapcar (lambda (pkg)
1020 (if (eval (intern (concat (symbol-name (car pkg)) "-package")))
1021 (package-get (car pkg) nil))
1025 (defun package-get-ever-installed-p (pkg &optional notused)
1026 (string-match "-package$" (symbol-name pkg))
1027 (custom-initialize-set
1029 (if (package-get-info-find-package
1030 packages-package-list
1031 (intern (substring (symbol-name pkg) 0 (match-beginning 0))))
1034 (defvar package-get-custom-groups nil
1035 "List of package-get-custom groups")
1037 (defun package-get-custom-add-entry (package props)
1038 (let* ((category (plist-get props 'category))
1039 (group (intern (concat category "-packages")))
1040 (custom-var (intern (concat (symbol-name package) "-package")))
1041 (description (plist-get props 'description)))
1042 (when (not (memq group package-get-custom-groups))
1043 (setq package-get-custom-groups (cons group
1044 package-get-custom-groups))
1045 (eval `(defgroup ,group nil
1046 ,(concat category " package group")
1048 (eval `(defcustom ,custom-var nil
1051 :initialize 'package-get-ever-installed-p
1055 (provide 'package-get)
1056 ;;; package-get.el ends here