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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2019 Julien Lepiller <julien@lepiller.eu>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (guix import composer)
#:use-module (ice-9 match)
#:use-module (json)
#:use-module (guix hash)
#:use-module (guix base32)
#:use-module (guix build git)
#:use-module (guix build utils)
#:use-module (guix build-system)
#:use-module (guix build-system composer)
#:use-module (guix import json)
#:use-module (guix import utils)
#:use-module ((guix licenses) #:prefix license:)
#:use-module (guix memoization)
#:use-module (guix packages)
#:use-module (guix serialization)
#:use-module (guix upstream)
#:use-module (guix utils)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-11)
#:use-module (srfi srfi-26)
#:export (composer->guix-package
%composer-updater
composer-recursive-import
%composer-base-url))
(define %composer-base-url
(make-parameter "https://repo.packagist.org"))
(define (fix-version version)
"Return a fixed version from a version string. For instance, v10.1 -> 10.1"
(cond
((string-prefix? "version" version)
(if (char-set-contains? char-set:digit (string-ref version 7))
(substring version 7)
(substring version 8)))
((string-prefix? "v" version)
(substring version 1))
(else version)))
(define (latest-version versions)
(fold (lambda (a b) (if (version>? (fix-version a) (fix-version b)) a b))
(car versions) versions))
(define (json->require dict)
(if dict
(let loop ((result '()) (require dict))
(match require
(() result)
((((? (cut string-contains <> "/") name) . _)
require ...)
(loop (cons name result) require))
((_ require ...) (loop result require))
(_ result)))
'()))
(define-json-mapping <composer-source> make-composer-source composer-source?
json->composer-source
(type composer-source-type)
(url composer-source-url)
(reference composer-source-reference))
(define-json-mapping <composer-package> make-composer-package composer-package?
json->composer-package
(description composer-package-description)
(homepage composer-package-homepage)
(source composer-package-source "source" json->composer-source)
(name composer-package-name "name" php-package-name)
(version composer-package-version "version" fix-version)
(require composer-package-require "require" json->require)
(dev-require composer-package-dev-require "require-dev" json->require)
(license composer-package-license "license"
(lambda (vector)
(let ((l (map string->license (vector->list vector))))
(if (eq? (length l) 1)
(car l)
`(list ,@l))))))
(define (valid-version? v)
(let ((d (string-downcase v)))
(and (not (string-contains d "dev"))
(not (string-contains d "beta"))
(not (string-contains d "rc")))))
(define* (composer-fetch name #:key (version #f))
"Return a composer-package representation of the Composer metadata for the
package NAME with optional VERSION, or #f on failure."
(let* ((url (string-append (%composer-base-url) "/p/" name ".json"))
(packages (and=> (json-fetch url)
(lambda (pkg)
(let ((pkgs (assoc-ref pkg "packages")))
(or (assoc-ref pkgs name) pkg))))))
(if packages
(json->composer-package
(if version
(assoc-ref packages version)
(cdr
(reduce
(lambda (new cur-max)
(match new
(((? valid-version? version) . tail)
(if (version>? (fix-version version)
(fix-version (car cur-max)))
(cons* version tail)
cur-max))
(_ cur-max)))
(cons* "0.0.0" #f)
packages))))
#f)))
(define (php-package-name name)
"Given the NAME of a package on Packagist, return a Guix-compliant name for
the package."
(let ((name (string-join (string-split name #\/) "-")))
(if (string-prefix? "php-" name)
(snake-case name)
(string-append "php-" (snake-case name)))))
(define (make-php-sexp composer-package)
"Return the `package' s-expression for a PHP package for the given
COMPOSER-PACKAGE."
(let* ((source (composer-package-source composer-package))
(dependencies (map php-package-name
(composer-package-require composer-package)))
(dev-dependencies (map php-package-name
(composer-package-dev-require composer-package)))
(git? (equal? (composer-source-type source) "git")))
((if git? call-with-temporary-directory call-with-temporary-output-file)
(lambda* (temp #:optional port)
(and (if git?
(begin
(mkdir-p temp)
(git-fetch (composer-source-url source)
(composer-source-reference source)
temp))
(url-fetch (composer-source-url source) temp))
`(package
(name ,(composer-package-name composer-package))
(version ,(composer-package-version composer-package))
(source
(origin
,@(if git?
`((method git-fetch)
(uri (git-reference
(url ,(if (string-suffix?
".git"
(composer-source-url source))
(string-drop-right
(composer-source-url source)
(string-length ".git"))
(composer-source-url source)))
(commit ,(composer-source-reference source))))
(file-name (git-file-name name version))
(sha256
(base32
,(bytevector->nix-base32-string
(file-hash* temp)))))
`((method url-fetch)
(uri ,(composer-source-url source))
(sha256 (base32 ,(guix-hash-url temp)))))))
(build-system composer-build-system)
,@(if (null? dependencies)
'()
`((inputs
(list ,@(map string->symbol dependencies)))))
,@(if (null? dev-dependencies)
'()
`((native-inputs
(list ,@(map string->symbol dev-dependencies)))))
(synopsis "")
(description ,(composer-package-description composer-package))
(home-page ,(composer-package-homepage composer-package))
(license ,(or (composer-package-license composer-package)
'unknown-license!))))))))
(define composer->guix-package
(memoize
(lambda* (package-name #:key (version #f) #:allow-other-keys)
"Fetch the metadata for PACKAGE-NAME from packagist.org, and return the
`package' s-expression corresponding to that package and its list of
dependencies, or #f and the empty list on failure."
(let ((package (composer-fetch package-name #:version version)))
(if package
(let* ((dependencies-names (composer-package-require package))
(dev-dependencies-names (composer-package-dev-require package)))
(values (make-php-sexp package)
(append dependencies-names dev-dependencies-names)))
(values #f '()))))))
(define (guix-name->composer-name name)
"Given a guix package name, return the name of the package in Packagist."
(if (string-prefix? "php-" name)
(let ((components (string-split (substring name 4) #\-)))
(match components
((namespace name ...)
(string-append namespace "/" (string-join name "-")))))
name))
(define (guix-package->composer-name package)
"Given a Composer PACKAGE built from Packagist, return the name of the
package in Packagist."
(let ((upstream-name (assoc-ref
(package-properties package)
'upstream-name))
(name (package-name package)))
(if upstream-name
upstream-name
(guix-name->composer-name name))))
(define (string->license str)
"Convert the string STR into a license object."
(or (spdx-string->license str)
(match str
("GNU LGPL" 'license:lgpl2.0)
("GPL" 'license:gpl3)
((or "BSD" "BSD License") 'license:bsd-3)
((or "MIT" "MIT license" "Expat license") 'license:expat)
("Public domain" 'license:public-domain)
((or "Apache License, Version 2.0" "Apache 2.0") 'license:asl2.0)
(_ 'unknown-license!))))
(define (php-package? package)
"Return true if PACKAGE is a PHP package from Packagist."
(and
(eq? (package-build-system package) composer-build-system)
(string-prefix? "php-" (package-name package))))
(define (latest-release package)
"Return an <upstream-source> for the latest release of PACKAGE."
(let* ((php-name (guix-package->composer-name package))
(package (composer-fetch php-name))
(version (composer-package-version package))
(url (composer-source-url (composer-package-source package))))
(upstream-source
(package (package-name package))
(version version)
(urls (list url)))))
(define %composer-updater
(upstream-updater
(name 'composer)
(description "Updater for Composer packages")
(pred php-package?)
(import latest-release)))
(define* (composer-recursive-import package-name #:optional version)
(recursive-import package-name
#:version version
#:repo->guix-package composer->guix-package
#:guix-name php-package-name))
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