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gnu-maintenance: Add `latest-release' and related tools.

* guix/gnu-maintenance.scm (ftp-server/directory, releases,
  version-string>?, latest-release, gnu-package-name->name+version): New
  procedures.
  (%package-name-rx): New variable.
version-0.8.3
Ludovic Courtès 9 years ago
parent
commit
98fefb210a
  1. 138
      guix/gnu-maintenance.scm

138
guix/gnu-maintenance.scm

@ -1,6 +1,6 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012 Nikita Karetnikov <nikita@karetnikov.org>
;;; Copyright © 2012 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2010, 2011, 2012, 2013 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
@ -22,10 +22,28 @@
#:use-module (web client)
#:use-module (web response)
#:use-module (ice-9 regex)
#:use-module (ice-9 match)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-11)
#:use-module (srfi srfi-26)
#:export (official-gnu-packages))
#:use-module (system foreign)
#:use-module (guix ftp-client)
#:export (official-gnu-packages
releases
latest-release
gnu-package-name->name+version))
;;; Commentary:
;;;
;;; Code for dealing with the maintenance of GNU packages, such as
;;; auto-updates.
;;;
;;; Code:
;;;
;;; List of GNU packages.
;;;
(define (http-fetch uri)
"Return a string containing the textual data at URI, a string."
@ -55,3 +73,119 @@
(and=> (regexp-exec %package-line-rx line)
(cut match:substring <> 1)))
lst)))
;;;
;;; Latest release.
;;;
(define (ftp-server/directory project)
"Return the FTP server and directory where PROJECT's tarball are
stored."
(define quirks
'(("commoncpp2" "ftp.gnu.org" "/gnu/commoncpp")
("ucommon" "ftp.gnu.org" "/gnu/commoncpp")
("libzrtpcpp" "ftp.gnu.org" "/gnu/ccrtp")
("libosip2" "ftp.gnu.org" "/gnu/osip")
("libgcrypt" "ftp.gnupg.org" "/gcrypt/libgcrypt")
("libgpg-error" "ftp.gnupg.org" "/gcrypt/libgpg-error")
("libassuan" "ftp.gnupg.org" "/gcrypt/libassuan")
("gnupg" "ftp.gnupg.org" "/gcrypt/gnupg")
("freefont-ttf" "ftp.gnu.org" "/gnu/freefont")
("gnu-ghostscript" "ftp.gnu.org" "/gnu/ghostscript")
("mit-scheme" "ftp.gnu.org" "/gnu/mit-scheme/stable.pkg")
("icecat" "ftp.gnu.org" "/gnu/gnuzilla")
("source-highlight" "ftp.gnu.org" "/gnu/src-highlite")
("TeXmacs" "ftp.texmacs.org" "/TeXmacs/targz")))
(match (assoc project quirks)
((_ server directory)
(values server directory))
(_
(values "ftp.gnu.org" (string-append "/gnu/" project)))))
(define (releases project)
"Return the list of releases of PROJECT as a list of release name/directory
pairs. Example: (\"mit-scheme-9.0.1\" . \"/gnu/mit-scheme/stable.pkg/9.0.1\"). "
;; TODO: Parse something like fencepost.gnu.org:/gd/gnuorg/packages-ftp.
(define release-rx
(make-regexp (string-append "^" project
"-([0-9]|[^-])*(-src)?\\.tar\\.")))
(define alpha-rx
(make-regexp "^.*-.*[0-9](-|~)?(alpha|beta|rc|cvs|svn|git)-?[0-9\\.]*\\.tar\\."))
(define (sans-extension tarball)
(let ((end (string-contains tarball ".tar")))
(substring tarball 0 end)))
(let-values (((server directory) (ftp-server/directory project)))
(define conn (ftp-open server))
(let loop ((directories (list directory))
(result '()))
(if (null? directories)
(begin
(ftp-close conn)
result)
(let* ((directory (car directories))
(files (ftp-list conn directory))
(subdirs (filter-map (lambda (file)
(match file
((name 'directory . _) name)
(_ #f)))
files)))
(loop (append (map (cut string-append directory "/" <>)
subdirs)
(cdr directories))
(append
;; Filter out signatures, deltas, and files which
;; are potentially not releases of PROJECT--e.g.,
;; in /gnu/guile, filter out guile-oops and
;; guile-www; in mit-scheme, filter out binaries.
(filter-map (lambda (file)
(match file
((file 'file . _)
(and (not (string-suffix? ".sig" file))
(regexp-exec release-rx file)
(not (regexp-exec alpha-rx file))
(let ((s (sans-extension file)))
(and (regexp-exec
%package-name-rx s)
(cons s directory)))))
(_ #f)))
files)
result)))))))
(define version-string>?
(let ((strverscmp
(let ((sym (or (dynamic-func "strverscmp" (dynamic-link))
(error "could not find `strverscmp' (from GNU libc)"))))
(pointer->procedure int sym (list '* '*)))))
(lambda (a b)
"Return #t when B denotes a newer version than A."
(> (strverscmp (string->pointer a) (string->pointer b)) 0))))
(define (latest-release project)
"Return (\"FOO-X.Y\" . \"/bar/foo\") or #f."
(let ((releases (releases project)))
(and (not (null? releases))
(fold (lambda (release latest)
(if (version-string>? (car release) (car latest))
release
latest))
'("" . "")
releases))))
(define %package-name-rx
;; Regexp for a package name, e.g., "foo-X.Y". Since TeXmacs uses
;; "TeXmacs-X.Y-src", the `-src' suffix is allowed.
(make-regexp "^(.*)-(([0-9]|\\.)+)(-src)?"))
(define (gnu-package-name->name+version name+version)
"Return the package name and version number extracted from NAME+VERSION."
(let ((match (regexp-exec %package-name-rx name+version)))
(if (not match)
(values name+version #f)
(values (match:substring match 1) (match:substring match 2)))))
;;; gnu-maintenance.scm ends here
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