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elpa-packages.el
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elpa-packages.el
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;;; elpa-packages.el --- Tools for collect information on ELPA Packages -*- lexical-binding: t; -*-
;; Copyright (C) 2016, 2017 Chunyang Xu
;; Author: Chunyang Xu <[email protected]>
;; Keywords: tools
;; Version: 0
;; Package-Requires: ((cl-lib "0.5"))
;; This program 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.
;; This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;
;;; Code:
(require 'cl-lib)
(require 'json)
;; Turn on debug
(setq debug-on-error t)
(defconst packages--elpas '(gnu
melpa
melpa-stable
org
marmalade
sunrise-commander
user42
emacswiki))
(defun package-build--sym-to-keyword (s)
"Return a version of symbol S as a :keyword."
(intern (concat ":" (symbol-name s))))
(defun package-build--pkg-info-for-json (info)
"Convert INFO into a data structure which will serialize to JSON in the desired shape."
(let* ((ver (elt info 0))
(deps (elt info 1))
(desc (elt info 2))
(type (elt info 3))
(props (when (> (length info) 4)
;; Delete some slots from user42's archive-contents
;; since they breaks `json-encode' and unused.
(cl-delete-if
(lambda (i)
(memq (car i) '(:authors :maintainer)))
(elt info 4)))))
(list :ver ver
:deps (cl-mapcan (lambda (dep)
(list (package-build--sym-to-keyword (car dep))
(cadr dep)))
deps)
:desc desc
:type type
:props props)))
(defun package-build--pkg-info-for-json2 (info)
"Convert INFO into a data structure which will serialize to JSON in the desired shape."
(let* ((vers (elt info 0))
(deps (elt info 1))
(desc (elt info 2))
(type (elt info 3))
(props (when (> (length info) 4)
;; Delete some slots from user42's archive-contents
;; since they breaks `json-encode' and unused.
(cl-delete-if
(lambda (i)
(memq (car i) '(:authors :maintainer)))
(elt info 4)))))
(list :vers (cl-mapcan (lambda (ver)
(list (package-build--sym-to-keyword (car ver))
(cadr ver)))
vers)
:deps (cl-mapcan (lambda (dep)
(list (package-build--sym-to-keyword (car dep))
(cadr dep)))
deps)
:desc desc
:type type
:props props)))
(defun packages--archive-alist (archive-file)
"Return the archive alist in ARCHIVE-FILE."
(with-temp-buffer
(insert-file-contents archive-file)
(cdr (read (current-buffer)))))
(defun packages--archive-alist-for-json (alist)
"Return the archive alist in a form suitable for JSON encoding."
(cl-mapcan (lambda (entry)
(list (package-build--sym-to-keyword (car entry))
(package-build--pkg-info-for-json (cdr entry))))
alist))
(defun packages--archive-alist-for-json2 (alist)
"Return the archive alist in a form suitable for JSON encoding."
(cl-mapcan (lambda (entry)
(list (package-build--sym-to-keyword (car entry))
(package-build--pkg-info-for-json2 (cdr entry))))
alist))
(defun packages-archive-as-json (archive-file json-file)
"Dump the ARCHIVE-FILE to JSON-FILE as json."
(cl-assert (file-readable-p archive-file) t)
(let ((coding-system-for-write 'utf-8))
(with-temp-file json-file
(insert (json-encode (packages--archive-alist-for-json
(packages--archive-alist archive-file)))))))
(defun packages-archive-as-json2 (alist json-file)
"Dump the ARCHIVE-FILE to JSON-FILE as json."
(cl-assert (file-readable-p archive-file) t)
(let ((coding-system-for-write 'utf-8))
(with-temp-file json-file
(insert (json-encode (packages--archive-alist-for-json
alist))))))
(defun packages--archive-alists-merge (alist)
(let (res)
(dolist (i alist res)
(let* ((pkg (car i))
(info (cdr i))
(ver (car (aref info 0))))
(if (assq pkg res)
(push ver (aref (cdr (assq pkg res)) 0))
(push (cons pkg info) res))))))
(defun packages--archive-alists ()
(cl-mapcan (lambda (elpa)
(let* ((file (format "%s-archive-contents" elpa))
(al (with-temp-buffer
(insert-file-contents file)
(cdr (read (current-buffer))))))
(cl-loop for (a . b) in al
do (aset b 0 (list (list elpa (aref b 0))))
collect (cons a b))))
packages--elpas))
(defun packages-all (json-file)
(let ((coding-system-for-write 'utf-8))
(with-temp-file json-file
(insert (json-encode
(packages--archive-alist-for-json2
(sort (packages--archive-alists-merge
(packages--archive-alists))
(lambda (p1 p2)
(string< (symbol-name (car p1))
(symbol-name (car p2)))))))))))
(defun packages-archives-as-json (archive-files json-file)
(let (al)
(dolist (f archive-files)
(setq al (append (packages--archive-alist f) al)))
(let ((coding-system-for-write 'utf-8))
(with-temp-file json-file
(insert (json-encode
(packages--archive-alist-for-json
(sort (cl-remove-duplicates al :test (lambda (p1 p2) (eq (car p1) (car p2))))
(lambda (p1 p2)
(string< (symbol-name (car p1))
(symbol-name (car p2))))))))))))
(defun packages--archive-url (elpa)
(format "https://mirrors.tuna.tsinghua.edu.cn/elpa/%s/archive-contents" elpa))
(message "-> Building all.json...")
(let (archive-files)
(dolist (elpa (reverse ; Prefer GNU ELPA (`cl-remove-duplicates' keeps the last one)
packages--elpas))
(let ((url (packages--archive-url elpa))
(file (format "%s-archive-contents" elpa)))
(url-copy-file url file t)
(push file archive-files)))
;; (packages-archives-as-json archive-files "all.json")
)
(packages-all "all.json")
(mapc (lambda (elpa)
(message "-> Build JSON for %s..." elpa)
(packages-archive-as-json
(format "%s-archive-contents" elpa)
(format "%s.json" elpa)))
packages--elpas)
(provide 'elpa-packages)
;;; elpa-packages.el ends here