gnu-maintenance: Improve 'official-gnu-packages'; add related procedures.
* guix/gnu-maintenance.scm (http-fetch): Return an input port. (<gnu-package-descriptor>): Add it. (official-gnu-packages): Use <gnu-package-descriptor>. (find-packages): Add it. (gnu-package?): Adjust accordingly.
This commit is contained in:
Nikita Karetnikov
parent
c6bded8a29
commit
f9bbf2a819
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@ -1,6 +1,6 @@
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;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2012 Nikita Karetnikov <nikita@karetnikov.org>
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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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@ -22,6 +22,7 @@
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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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@ -30,8 +31,22 @@
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#:use-module (guix ftp-client)
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#:use-module (guix utils)
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#:use-module (guix packages)
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#:export (official-gnu-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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@ -49,29 +64,32 @@
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;;;
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(define (http-fetch uri)
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"Return a string containing the textual data at URI, a string."
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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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(http-get (string->uri uri)))
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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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(if data
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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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(format (current-error-port)
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"warning: using Guile ~a, which does not support HTTP ~s encoding~%"
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(version)
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(response-transfer-encoding resp))
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(error "download failed; use a newer Guile"
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uri resp))))
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(cond ((string<=? (version) "2.0.5")
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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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(format (current-error-port)
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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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(error "download failed; use a newer Guile"
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uri resp)))
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((string<=? (version) "2.0.7")
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(open-input-string data))
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(else data)))
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(else
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(error "download failed:" uri code
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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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@ -79,16 +97,100 @@
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"viewvc/*checkout*/gnumaint/"
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"gnupackages.txt?root=womb"))
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(define (official-gnu-packages)
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"Return a list of GNU packages."
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(define %package-line-rx
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(make-regexp "^package: (.+)$"))
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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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(let ((lst (string-split (http-fetch %package-list-url) #\nl)))
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(filter-map (lambda (line)
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(and=> (regexp-exec %package-line-rx line)
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(cut match:substring <> 1)))
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lst)))
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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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@ -97,9 +199,10 @@
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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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(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 (package-name package) (official-gnu-packages))
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(and (member name (map gnu-package-name (official-gnu-packages)))
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#t))))))
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