324 lines
12 KiB
Scheme
324 lines
12 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2010, 2011, 2012, 2013 Ludovic Courtès <ludo@gnu.org>
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;;; Copyright © 2012, 2013 Nikita Karetnikov <nikita@karetnikov.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (guix gnu-maintenance)
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#:use-module (web uri)
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#:use-module (web client)
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#:use-module (web response)
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#:use-module (ice-9 regex)
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#:use-module (ice-9 rdelim)
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#:use-module (ice-9 match)
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#:use-module (srfi srfi-1)
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#:use-module (srfi srfi-11)
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#:use-module (srfi srfi-26)
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#:use-module (system foreign)
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#:use-module (guix ftp-client)
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#:use-module (guix ui)
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#:use-module (guix utils)
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#:use-module (guix packages)
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#:export (gnu-package-name
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gnu-package-mundane-name
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gnu-package-copyright-holder
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gnu-package-savannah
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gnu-package-fsd
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gnu-package-language
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gnu-package-logo
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gnu-package-doc-category
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gnu-package-doc-summary
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gnu-package-doc-urls
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gnu-package-download-url
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official-gnu-packages
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find-packages
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gnu-package?
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releases
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latest-release
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gnu-package-name->name+version))
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;;; Commentary:
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;;;
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;;; Code for dealing with the maintenance of GNU packages, such as
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;;; auto-updates.
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;;;
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;;; Code:
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;;;
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;;; List of GNU packages.
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;;;
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(define (http-fetch uri)
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"Return an input port containing the textual data at URI, a string."
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(let*-values (((resp data)
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(let ((uri (string->uri uri)))
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;; Try hard to use the API du jour to get an input port.
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(if (version>? "2.0.7" (version))
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(if (defined? 'http-get*)
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(http-get* uri)
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(http-get uri)) ; old Guile, returns a string
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(http-get uri #:streaming? #t)))) ; 2.0.8 or later
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((code)
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(response-code resp)))
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(case code
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((200)
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(cond ((not data)
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(begin
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;; XXX: Guile 2.0.5 and earlier did not support chunked transfer
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;; encoding, which is required when fetching %PACKAGE-LIST-URL
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;; (see <http://lists.gnu.org/archive/html/guile-devel/2011-09/msg00089.html>).
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;; Since users may still be using these versions, warn them and
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;; bail out.
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(warning (_ "using Guile ~a, ~a ~s encoding~%")
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(version)
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"which does not support HTTP"
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(response-transfer-encoding resp))
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(leave (_ "download failed; use a newer Guile~%")
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uri resp)))
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((string? data) ; old `http-get' returns a string
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(open-input-string data))
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(else ; input port
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data)))
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(else
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(error "download failed" uri code
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(response-reason-phrase resp))))))
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(define %package-list-url
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(string-append "http://cvs.savannah.gnu.org/"
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"viewvc/*checkout*/gnumaint/"
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"gnupackages.txt?root=womb"))
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(define-record-type* <gnu-package-descriptor>
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gnu-package-descriptor
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make-gnu-package-descriptor
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gnu-package-descriptor?
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(name gnu-package-name)
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(mundane-name gnu-package-mundane-name)
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(copyright-holder gnu-package-copyright-holder)
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(savannah gnu-package-savannah)
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(fsd gnu-package-fsd)
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(language gnu-package-language)
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(logo gnu-package-logo)
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(doc-category gnu-package-doc-category)
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(doc-summary gnu-package-doc-summary)
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(doc-urls gnu-package-doc-urls)
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(download-url gnu-package-download-url))
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(define (official-gnu-packages)
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"Return a list of records, which are GNU packages."
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(define (group-package-fields port state)
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;; Return a list of alists. Each alist contains fields of a GNU
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;; package.
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(let ((line (read-line port))
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(field-rx (make-regexp "^([[:graph:]]+): (.*)$"))
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(doc-urls-rx (make-regexp "^doc-url: (.*)$"))
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(end-rx (make-regexp "^# End. .+Do not remove this line.+")))
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(define (match-field str)
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;; Packages are separated by empty strings. If STR is an
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;; empty string, create a new list to store fields of a
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;; different package. Otherwise, match and create a key-value
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;; pair.
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(match str
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(""
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(group-package-fields port (cons '() state)))
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(str
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(cond ((regexp-exec doc-urls-rx str)
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=>
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(lambda (match)
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(if (equal? (assoc-ref (first state) "doc-urls") #f)
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(group-package-fields
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port (cons (cons (cons "doc-urls"
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(list
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(match:substring match 1)))
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(first state))
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(drop state 1)))
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(group-package-fields
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port (cons (cons (cons "doc-urls"
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(cons (match:substring match 1)
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(assoc-ref (first state)
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"doc-urls")))
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(assoc-remove! (first state)
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"doc-urls"))
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(drop state 1))))))
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((regexp-exec field-rx str)
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=>
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(lambda (match)
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(group-package-fields
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port (cons (cons (cons (match:substring match 1)
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(match:substring match 2))
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(first state))
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(drop state 1)))))
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(else (group-package-fields port state))))))
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(if (or (eof-object? line)
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(regexp-exec end-rx line)) ; don't include dummy fields
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(remove null-list? state)
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(match-field line))))
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(define (alist->record alist make keys)
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;; Apply MAKE, which should be a syntactic constructor, to the
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;; values associated with KEYS in ALIST.
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(let ((args (map (cut assoc-ref alist <>) keys)))
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(apply make args)))
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(reverse
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(map (lambda (alist)
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(alist->record alist
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make-gnu-package-descriptor
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(list "package" "mundane-name" "copyright-holder"
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"savannah" "fsd" "language" "logo"
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"doc-category" "doc-summary" "doc-urls"
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"download-url")))
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(group-package-fields (http-fetch %package-list-url)
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'(())))))
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(define (find-packages regexp)
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"Find GNU packages which satisfy REGEXP."
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(let ((name-rx (make-regexp regexp)))
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(filter (lambda (package)
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(false-if-exception
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(regexp-exec name-rx (gnu-package-name package))))
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(official-gnu-packages))))
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(define gnu-package?
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(memoize
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(lambda (package)
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"Return true if PACKAGE is a GNU package. This procedure may access the
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network to check in GNU's database."
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;; TODO: Find a way to determine that a package is non-GNU without going
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;; through the network.
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(let ((url (and=> (package-source package) origin-uri))
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(name (package-name package)))
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(or (and (string? url) (string-prefix? "mirror://gnu" url))
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(and (member name (map gnu-package-name (official-gnu-packages)))
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#t))))))
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;;;
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;;; Latest release.
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;;;
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(define (ftp-server/directory project)
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"Return the FTP server and directory where PROJECT's tarball are
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stored."
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(define quirks
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'(("commoncpp2" "ftp.gnu.org" "/gnu/commoncpp")
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("ucommon" "ftp.gnu.org" "/gnu/commoncpp")
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("libzrtpcpp" "ftp.gnu.org" "/gnu/ccrtp")
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("libosip2" "ftp.gnu.org" "/gnu/osip")
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("libgcrypt" "ftp.gnupg.org" "/gcrypt/libgcrypt")
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("libgpg-error" "ftp.gnupg.org" "/gcrypt/libgpg-error")
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("libassuan" "ftp.gnupg.org" "/gcrypt/libassuan")
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("gnupg" "ftp.gnupg.org" "/gcrypt/gnupg")
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("freefont-ttf" "ftp.gnu.org" "/gnu/freefont")
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("gnu-ghostscript" "ftp.gnu.org" "/gnu/ghostscript")
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("mit-scheme" "ftp.gnu.org" "/gnu/mit-scheme/stable.pkg")
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("icecat" "ftp.gnu.org" "/gnu/gnuzilla")
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("source-highlight" "ftp.gnu.org" "/gnu/src-highlite")
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("TeXmacs" "ftp.texmacs.org" "/TeXmacs/targz")))
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(match (assoc project quirks)
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((_ server directory)
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(values server directory))
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(_
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(values "ftp.gnu.org" (string-append "/gnu/" project)))))
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(define (releases project)
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"Return the list of releases of PROJECT as a list of release name/directory
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pairs. Example: (\"mit-scheme-9.0.1\" . \"/gnu/mit-scheme/stable.pkg/9.0.1\"). "
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;; TODO: Parse something like fencepost.gnu.org:/gd/gnuorg/packages-ftp.
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(define release-rx
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(make-regexp (string-append "^" project
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"-([0-9]|[^-])*(-src)?\\.tar\\.")))
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(define alpha-rx
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(make-regexp "^.*-.*[0-9](-|~)?(alpha|beta|rc|cvs|svn|git)-?[0-9\\.]*\\.tar\\."))
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(define (sans-extension tarball)
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(let ((end (string-contains tarball ".tar")))
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(substring tarball 0 end)))
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(define (release-file file)
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;; Return #f if FILE is not a release tarball, otherwise return
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;; PACKAGE-VERSION.
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(and (not (string-suffix? ".sig" file))
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(regexp-exec release-rx file)
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(not (regexp-exec alpha-rx file))
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(let ((s (sans-extension file)))
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(and (regexp-exec %package-name-rx s) s))))
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(let-values (((server directory) (ftp-server/directory project)))
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(define conn (ftp-open server))
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(let loop ((directories (list directory))
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(result '()))
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(match directories
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(()
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(ftp-close conn)
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result)
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((directory rest ...)
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(let* ((files (ftp-list conn directory))
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(subdirs (filter-map (match-lambda
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((name 'directory . _) name)
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(_ #f))
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files)))
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(loop (append (map (cut string-append directory "/" <>)
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subdirs)
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rest)
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(append
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;; Filter out signatures, deltas, and files which
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;; are potentially not releases of PROJECT--e.g.,
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;; in /gnu/guile, filter out guile-oops and
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;; guile-www; in mit-scheme, filter out binaries.
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(filter-map (match-lambda
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((file 'file . _)
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(and=> (release-file file)
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(cut cons <> directory)))
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(_ #f))
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files)
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result))))))))
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(define (latest-release project)
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"Return (\"FOO-X.Y\" . \"/bar/foo\") or #f."
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(let ((releases (releases project)))
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(and (not (null? releases))
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(fold (lambda (release latest)
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(if (version>? (car release) (car latest))
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release
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latest))
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'("" . "")
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releases))))
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(define %package-name-rx
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;; Regexp for a package name, e.g., "foo-X.Y". Since TeXmacs uses
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;; "TeXmacs-X.Y-src", the `-src' suffix is allowed.
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(make-regexp "^(.*)-(([0-9]|\\.)+)(-src)?"))
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(define (gnu-package-name->name+version name+version)
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"Return the package name and version number extracted from NAME+VERSION."
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(let ((match (regexp-exec %package-name-rx name+version)))
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(if (not match)
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(values name+version #f)
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(values (match:substring match 1) (match:substring match 2)))))
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;;; gnu-maintenance.scm ends here
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