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import: gem: Rewrite to use a JSON mapping to records.
* guix/import/gem.scm (<gem>, <gem-dependencies>, <gem-dependency>): New record types with JSON mapping. (json->gem-dependencies): New procedures. (rubygems-fetch): Use it. (hex-string->bytevector): Remove. (make-gem-sexp): Expect HASH to be a bytevector. (gem->guix-package): Adjust to use the new <gem> data type instead of an alist. (latest-release): Likewise.
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1 changed files with 68 additions and 74 deletions
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@ -2,6 +2,7 @@
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;;; Copyright © 2015 David Thompson <davet@gnu.org>
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;;; Copyright © 2016 Ben Woodcroft <donttrustben@gmail.com>
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;;; Copyright © 2018 Oleg Pykhalov <go.wigust@gmail.com>
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;;; Copyright © 2020 Ludovic Courtès <ludo@gnu.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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@ -20,28 +21,63 @@
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(define-module (guix import gem)
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#:use-module (ice-9 match)
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#:use-module (ice-9 pretty-print)
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#:use-module (srfi srfi-1)
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#:use-module (rnrs bytevectors)
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#:use-module (json)
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#:use-module (web uri)
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#:use-module (guix json)
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#:use-module ((guix download) #:prefix download:)
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#:use-module (guix import utils)
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#:use-module (guix import json)
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#:use-module (guix packages)
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#:use-module (guix upstream)
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#:use-module ((guix licenses) #:prefix license:)
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#:use-module (guix base16)
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#:use-module (guix base32)
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#:use-module (guix build-system ruby)
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#:use-module ((guix build-system ruby) #:select (rubygems-uri))
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#:export (gem->guix-package
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%gem-updater
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gem-recursive-import))
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;; Gems as defined by the API at <https://rubygems.org/api/v1/gems>.
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(define-json-mapping <gem> make-gem gem?
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json->gem
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(name gem-name) ;string
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(platform gem-platform) ;string
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(version gem-version) ;string
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(authors gem-authors) ;string
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(licenses gem-licenses "licenses" ;list of strings
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vector->list)
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(info gem-info)
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(sha256 gem-sha256 "sha" ;bytevector
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base16-string->bytevector)
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(home-page gem-home-page "homepage_uri") ;string
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(dependencies gem-dependencies "dependencies" ;<gem-dependencies>
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json->gem-dependencies))
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(define-json-mapping <gem-dependencies> make-gem-dependencies
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gem-dependencies?
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json->gem-dependencies
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(development gem-dependencies-development ;list of <gem-dependency>
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"development"
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json->gem-dependency-list)
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(runtime gem-dependencies-runtime ;list of <gem-dependency>
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"runtime"
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json->gem-dependency-list))
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(define (json->gem-dependency-list vector)
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(if vector
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(map json->gem-dependency (vector->list vector))
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'()))
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(define-json-mapping <gem-dependency> make-gem-dependency gem-dependency?
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json->gem-dependency
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(name gem-dependency-name) ;string
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(requirements gem-dependency-requirements)) ;string
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(define (rubygems-fetch name)
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"Return an alist representation of the RubyGems metadata for the package NAME,
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or #f on failure."
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(json-fetch
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(string-append "https://rubygems.org/api/v1/gems/" name ".json")))
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"Return a <gem> record for the package NAME, or #f on failure."
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(and=> (json-fetch
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(string-append "https://rubygems.org/api/v1/gems/" name ".json"))
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json->gem))
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(define (ruby-package-name name)
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"Given the NAME of a package on RubyGems, return a Guix-compliant name for
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@ -50,41 +86,6 @@ (define (ruby-package-name name)
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(snake-case name)
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(string-append "ruby-" (snake-case name))))
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(define (hex-string->bytevector str)
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"Convert the hexadecimal encoded string STR to a bytevector."
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(define hex-char->int
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(match-lambda
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(#\0 0)
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(#\1 1)
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(#\2 2)
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(#\3 3)
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(#\4 4)
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(#\5 5)
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(#\6 6)
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(#\7 7)
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(#\8 8)
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(#\9 9)
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(#\a 10)
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(#\b 11)
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(#\c 12)
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(#\d 13)
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(#\e 14)
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(#\f 15)))
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(define (read-byte i)
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(let ((j (* 2 i)))
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(+ (hex-char->int (string-ref str (1+ j)))
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(* (hex-char->int (string-ref str j)) 16))))
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(let* ((len (/ (string-length str) 2))
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(bv (make-bytevector len)))
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(let loop ((i 0))
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(if (= i len)
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bv
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(begin
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(bytevector-u8-set! bv i (read-byte i))
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(loop (1+ i)))))))
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(define (make-gem-sexp name version hash home-page synopsis description
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dependencies licenses)
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"Return the `package' s-expression for a Ruby package with the given NAME,
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@ -97,8 +98,7 @@ (define (make-gem-sexp name version hash home-page synopsis description
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(uri (rubygems-uri ,name version))
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(sha256
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(base32
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,(bytevector->nix-base32-string
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(hex-string->bytevector hash))))))
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,(bytevector->nix-base32-string hash)))))
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(build-system ruby-build-system)
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,@(if (null? dependencies)
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'()
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@ -120,31 +120,25 @@ (define (make-gem-sexp name version hash home-page synopsis description
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(define* (gem->guix-package package-name #:optional (repo 'rubygems) version)
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"Fetch the metadata for PACKAGE-NAME from rubygems.org, and return the
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`package' s-expression corresponding to that package, or #f on failure."
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(let ((package (rubygems-fetch package-name)))
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(and package
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(let* ((name (assoc-ref package "name"))
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(version (assoc-ref package "version"))
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(hash (assoc-ref package "sha"))
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(synopsis (assoc-ref package "info")) ; nothing better to use
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(description (beautify-description
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(assoc-ref package "info")))
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(home-page (assoc-ref package "homepage_uri"))
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(dependencies-names (map (lambda (dep) (assoc-ref dep "name"))
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(vector->list
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(assoc-ref* package
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"dependencies"
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"runtime"))))
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(dependencies (map (lambda (dep)
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(if (string=? dep "bundler")
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"bundler" ; special case, no prefix
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(ruby-package-name dep)))
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dependencies-names))
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(licenses (map string->license
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(vector->list
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(assoc-ref package "licenses")))))
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(values (make-gem-sexp name version hash home-page synopsis
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description dependencies licenses)
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dependencies-names)))))
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(let ((gem (rubygems-fetch package-name)))
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(if gem
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(let* ((dependencies-names (map gem-dependency-name
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(gem-dependencies-runtime
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(gem-dependencies gem))))
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(dependencies (map (lambda (dep)
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(if (string=? dep "bundler")
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"bundler" ; special case, no prefix
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(ruby-package-name dep)))
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dependencies-names))
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(licenses (map string->license (gem-licenses gem))))
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(values (make-gem-sexp (gem-name gem) (gem-version gem)
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(gem-sha256 gem) (gem-home-page gem)
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(gem-info gem)
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(beautify-description (gem-info gem))
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dependencies
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licenses)
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dependencies-names))
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(values #f '()))))
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(define (guix-package->gem-name package)
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"Given a PACKAGE built from rubygems.org, return the name of the
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@ -185,9 +179,9 @@ (define (rubygems-url? url)
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(define (latest-release package)
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"Return an <upstream-source> for the latest release of PACKAGE."
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(let* ((gem-name (guix-package->gem-name package))
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(metadata (rubygems-fetch gem-name))
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(version (assoc-ref metadata "version"))
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(url (rubygems-uri gem-name version)))
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(gem (rubygems-fetch gem-name))
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(version (gem-version gem))
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(url (rubygems-uri gem-name version)))
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(upstream-source
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(package (package-name package))
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(version version)
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