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melpa/package-build.el
Steve Purcell 1a2c6e5d80 More informative error message
2014-11-08 13:59:45 +00:00

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;;; package-build.el --- Tools for assembling a package archive
;; Copyright (C) 2011-2013 Donald Ephraim Curtis <dcurtis@milkbox.net>
;; Copyright (C) 2012-2014 Steve Purcell <steve@sanityinc.com>
;; Copyright (C) 2009 Phil Hagelberg <technomancy@gmail.com>
;; Author: Donald Ephraim Curtis <dcurtis@milkbox.net>
;; Created: 2011-09-30
;; Version: 0.1
;; Keywords: tools
;; Package-Requires: ((cl-lib "0.2"))
;; This file is not (yet) part of GNU Emacs.
;; However, it is distributed under the same license.
;; GNU Emacs 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, or (at your option)
;; any later version.
;; GNU Emacs 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 Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;;; Commentary:
;; This file allows a curator to publish an archive of Emacs packages.
;; The archive is generated from a set of recipes which describe elisp
;; projects and repositories from which to get them. The term
;; "package" here is used to mean a specific version of a project that
;; is prepared for download and installation.
;;; Code:
(require 'cl-lib)
(require 'package)
(require 'lisp-mnt)
(require 'json)
(defconst pb/this-dir (file-name-directory (or load-file-name (buffer-file-name))))
(defgroup package-build nil
"Facilities for building package.el-compliant packages from upstream source code."
:group 'development)
(defcustom package-build-working-dir (expand-file-name "working/" pb/this-dir)
"Directory in which to keep checkouts."
:group 'package-build
:type 'string)
(defcustom package-build-archive-dir (expand-file-name "packages/" pb/this-dir)
"Directory in which to keep compiled archives."
:group 'package-build
:type 'string)
(defcustom package-build-recipes-dir (expand-file-name "recipes/" pb/this-dir)
"Directory containing recipe files."
:group 'package-build
:type 'string)
(defcustom package-build-verbose t
"When non-nil, `package-build' feels free to print information about its progress."
:group 'package-build
:type 'boolean)
(defcustom package-build-stable nil
"When non-nil, `package-build' tries to build packages from versions-tagged code."
:group 'package-build
:type 'boolean)
(defcustom package-build-timeout-executable
(let ((prog (or (executable-find "timeout")
(executable-find "gtimeout"))))
(when (and prog
(string-match-p "^ *-k" (shell-command-to-string (concat prog " --help"))))
prog))
"Path to a GNU coreutils \"timeout\" command if available.
This must be a version which supports the \"-k\" option."
:group 'package-build
:type '(file :must-match t))
(defcustom package-build-tar-executable
(or (executable-find "gtar")
(executable-find "tar"))
"Path to a (preferably GNU) tar command.
Certain package names (e.g. \"@\") may not work properly with a BSD tar."
:group 'package-build
:type '(file :must-match t))
(defcustom package-build-write-melpa-badge-images nil
"When non-nil, write MELPA badge images alongside packages, for use on github pages etc."
:group 'package-build
:type 'boolean)
;;; Internal Variables
(defvar pb/recipe-alist nil
"Internal list of package build specs.
Do not use this directly. Use `package-build-recipe-alist'
function.")
(defvar pb/recipe-alist-initialized nil
"Determines if `pb/recipe-alist` has been initialized.")
(defvar pb/archive-alist nil
"Internal list of already-built packages, in the standard package.el format.
Do not use this directly. Use `package-build-archive-alist'
function for access to this function")
(defvar pb/archive-alist-initialized nil
"Determines if pb/archive-alist has been initialized.")
(defconst package-build-default-files-spec
'("*.el" "*.el.in" "dir"
"*.info" "*.texi" "*.texinfo"
"doc/dir" "doc/*.info" "doc/*.texi" "doc/*.texinfo"
(:exclude ".dir-locals.el" "tests.el" "*-test.el" "*-tests.el"))
"Default value for :files attribute in recipes.")
(defun pb/message (format-string &rest args)
"Log a message using FORMAT-STRING and ARGS as per `message'."
(when package-build-verbose
(apply 'message format-string args)))
(defun pb/slurp-file (file-name)
"Return the contents of FILE-NAME as a string, or nil if no such file exists."
(when (file-exists-p file-name)
(with-temp-buffer
(insert-file-contents file-name)
(buffer-substring-no-properties (point-min) (point-max)))))
(defun pb/string-rtrim (str)
"Remove trailing whitespace from `STR'."
(replace-regexp-in-string "[ \t\n]*$" "" str))
(defun pb/parse-time (str)
"Parse STR as a time, and format as a YYYYMMDD.HHMM string."
;; We remove zero-padding the HH portion, as it is lost
;; when stored in the archive-contents
(let* ((s (substring-no-properties str))
(time (date-to-time
(if (string-match "^\\([0-9]\\{4\\}\\)/\\([0-9]\\{2\\}\\)/\\([0-9]\\{2\\}\\) \\([0-9]\\{2\\}:[0-9]\\{2\\}:[0-9]\\{2\\}\\)$" str)
(concat (match-string 1 str) "-" (match-string 2 str) "-"
(match-string 3 str) " " (match-string 4 str))
str))))
(concat (format-time-string "%Y%m%d." time)
(format "%d" (or (string-to-number (format-time-string "%H%M" time)) 0)))))
(defun pb/string-match-all (regex str &rest groups)
"Find every match for `REGEX' within `STR'.
Return a list containing the full match string and match for
groups `GROUPS'. The return list is of the form
((FULL GROUP1 GROUP2 ...) ...)
where FULL is the complete regexp match and
GROUP1, GROUP2, ... are the regex groups specified by the
`GROUPS' argument. If `GROUPS' is nil then FULL and GROUP1 will
be identical."
(let (result
(pos 0)
(groups (or groups '(0))))
(while (string-match regex str pos)
(push (cons (match-string 0 str) (mapcar
(lambda (group)
(match-string group str))
groups))
result)
(setq pos (match-end 0)))
result))
(defun pb/find-parse-time (regex &optional bound)
"Find REGEX in current buffer and format as a time version, optionally looking only as far as BOUND."
(pb/parse-time (progn (re-search-backward regex bound)
(match-string-no-properties 1))))
(defun pb/valid-version-string (str)
"Return true if STR is a valid version, otherwise return nil."
(ignore-errors (version-to-list str)))
(defun pb/find-tag-version-newest (regex &optional bound &rest additional-groups)
"Find the newest version matching REGEX, optionally looking only as far as BOUND."
(let* ((text (buffer-substring-no-properties
(or bound (point-min)) (point)))
(tags (cl-remove-if-not
(lambda (tag-version)
(pb/valid-version-string (cadr tag-version)))
(apply 'pb/string-match-all regex text 1 additional-groups))))
(car (nreverse (sort tags (lambda (v1 v2)
(version< (cadr v1) (cadr v2))))))))
(defun pb/find-parse-time-latest (regex &optional bound)
"Find the latest timestamp matching REGEX, optionally looking only as far as BOUND."
(let* ((text (buffer-substring-no-properties
(or bound (point-min)) (point)))
(times (mapcar 'pb/parse-time
(mapcar 'cadr (pb/string-match-all regex text 1)))))
(car (nreverse (sort times 'string<)))))
(defun pb/run-process (dir command &rest args)
"In DIR (or `default-directory' if unset) run COMMAND with ARGS.
Output is written to the current buffer."
(let* ((default-directory (file-name-as-directory (or dir default-directory)))
(argv (if package-build-timeout-executable
(append (list package-build-timeout-executable "-k" "60" "600" command) args)
(cons command args))))
(unless (file-directory-p default-directory)
(error "Can't run process in non-existent directory: %s" default-directory))
(let ((exit-code (apply 'process-file (car argv) nil (current-buffer) t (cdr argv))))
(or (zerop exit-code)
(error "Command '%s' exited with non-zero status %d: %s"
argv exit-code (buffer-string))))))
(defun pb/run-process-match (regex dir prog &rest args)
"Find match for REGEX when - in DIR, or `default-directory' if unset - we run PROG with ARGS."
(with-temp-buffer
(apply 'pb/run-process dir prog args)
(goto-char (point-min))
(re-search-forward regex)
(match-string-no-properties 1)))
(defun package-build-checkout (package-name config working-dir)
"Check out source for PACKAGE-NAME with CONFIG under WORKING-DIR.
In turn, this function uses the :fetcher option in the CONFIG to
choose a source-specific fetcher function, which it calls with
the same arguments.
Returns a last-modification timestamp for the :files listed in
CONFIG, if any, or `package-build-default-files-spec' otherwise."
(let ((repo-type (plist-get config :fetcher)))
(pb/message "Fetcher: %s" repo-type)
(unless (eq 'wiki repo-type)
(pb/message "Source: %s\n" (or (plist-get config :repo) (plist-get config :url))))
(funcall (intern (format "pb/checkout-%s" repo-type))
package-name config (file-name-as-directory working-dir))))
(defvar pb/last-wiki-fetch-time 0
"The time at which an emacswiki URL was last requested.
This is used to avoid exceeding the rate limit of 1 request per 2
seconds; the server cuts off after 10 requests in 20 seconds.")
(defvar pb/wiki-min-request-interval 3
"The shortest permissible interval between successive requests for Emacswiki URLs.")
(defmacro pb/with-wiki-rate-limit (&rest body)
"Rate-limit BODY code passed to this macro to match EmacsWiki's rate limiting."
(let ((now (cl-gensym))
(elapsed (cl-gensym)))
`(let* ((,now (float-time))
(,elapsed (- ,now pb/last-wiki-fetch-time)))
(when (< ,elapsed pb/wiki-min-request-interval)
(let ((wait (- pb/wiki-min-request-interval ,elapsed)))
(pb/message "Waiting %.2f secs before hitting Emacswiki again" wait)
(sleep-for wait)))
(unwind-protect
(progn ,@body)
(setq pb/last-wiki-fetch-time (float-time))))))
(defun pb/grab-wiki-file (filename)
"Download FILENAME from emacswiki, returning its last-modified time."
(let* ((download-url
(format "http://www.emacswiki.org/emacs/download/%s" filename))
(wiki-url
(format "http://www.emacswiki.org/emacs/%s" filename)))
(pb/with-wiki-rate-limit
(url-copy-file download-url filename t))
(when (zerop (nth 7 (file-attributes filename)))
(error "Wiki file %s was empty - has it been removed?" filename))
;; The Last-Modified response header for the download is actually
;; correct for the file, but we have no access to that
;; header. Instead, we must query the non-raw emacswiki page for
;; the file.
;; Since those Emacswiki lookups are time-consuming, we maintain a
;; foo.el.stamp file containing ("SHA1" . "PARSED_TIME")
(let* ((new-content-hash (secure-hash 'sha1 (pb/slurp-file filename)))
(stamp-file (concat filename ".stamp"))
(stamp-info (pb/read-from-file stamp-file))
(prev-content-hash (car stamp-info)))
(if (and prev-content-hash
(string-equal new-content-hash prev-content-hash))
;; File has not changed, so return old timestamp
(progn
(pb/message "%s is unchanged" filename)
(cdr stamp-info))
(pb/message "%s has changed - checking mod time" filename)
(let ((new-timestamp
(with-current-buffer (pb/with-wiki-rate-limit
(url-retrieve-synchronously wiki-url))
(unless (= 200 url-http-response-status)
(error "HTTP error %s fetching %s" url-http-response-status wiki-url))
(goto-char (point-max))
(pb/find-parse-time
"Last edited \\([0-9]\\{4\\}-[0-9]\\{2\\}-[0-9]\\{2\\} [0-9]\\{2\\}:[0-9]\\{2\\} [A-Z]\\{3\\}\\)"
url-http-end-of-headers))))
(pb/dump (cons new-content-hash new-timestamp) stamp-file)
new-timestamp)))))
(defun pb/checkout-wiki (name config dir)
"Checkout package NAME with config CONFIG from the EmacsWiki into DIR."
(unless package-build-stable
(with-current-buffer (get-buffer-create "*package-build-checkout*")
(unless (file-exists-p dir)
(make-directory dir))
(let ((files (or (plist-get config :files)
(list (format "%s.el" name))))
(default-directory dir))
(car (nreverse (sort (mapcar 'pb/grab-wiki-file files) 'string-lessp)))))))
(defun pb/darcs-repo (dir)
"Get the current darcs repo for DIR."
(pb/run-process-match "Default Remote: \\(.*\\)" dir "darcs" "show" "repo"))
(defun pb/checkout-darcs (name config dir)
"Check package NAME with config CONFIG out of darcs into DIR."
(unless package-build-stable
(let ((repo (plist-get config :url)))
(with-current-buffer (get-buffer-create "*package-build-checkout*")
(cond
((and (file-exists-p (expand-file-name "_darcs" dir))
(string-equal (pb/darcs-repo dir) repo))
(pb/princ-exists dir)
(pb/run-process dir "darcs" "pull"))
(t
(when (file-exists-p dir)
(delete-directory dir t))
(pb/princ-checkout repo dir)
(pb/run-process nil "darcs" "get" repo dir)))
(apply 'pb/run-process dir "darcs" "changes" "--max-count" "1"
(pb/expand-source-file-list dir config))
(pb/find-parse-time
"\\([a-zA-Z]\\{3\\} [a-zA-Z]\\{3\\} \\( \\|[0-9]\\)[0-9] [0-9]\\{2\\}:[0-9]\\{2\\}:[0-9]\\{2\\} [A-Za-z]\\{3\\} [0-9]\\{4\\}\\)")))))
(defun pb/fossil-repo (dir)
"Get the current fossil repo for DIR."
(pb/run-process-match "\\(.*\\)" dir "fossil" "remote-url"))
(defun pb/checkout-fossil (name config dir)
"Check package NAME with config CONFIG out of fossil into DIR."
(unless package-build-stable
(let ((repo (plist-get config :url)))
(with-current-buffer (get-buffer-create "*package-build-checkout*")
(cond
((and (or (file-exists-p (expand-file-name ".fslckout" dir))
(file-exists-p (expand-file-name "_FOSSIL_" dir)))
(string-equal (pb/fossil-repo dir) repo))
(pb/princ-exists dir)
(pb/run-process dir "fossil" "update"))
(t
(when (file-exists-p dir)
(delete-directory dir t))
(pb/princ-checkout repo dir)
(make-directory dir)
(pb/run-process dir "fossil" "clone" repo "repo.fossil")
(pb/run-process dir "fossil" "open" "repo.fossil")))
(pb/run-process dir "fossil" "timeline" "-n" "1" "-t" "ci")
(or (pb/find-parse-time
"=== \\([0-9]\\{4\\}-[0-9]\\{2\\}-[0-9]\\{2\\} ===\n[0-9]\\{2\\}:[0-9]\\{2\\}:[0-9]\\{2\\}\\) ")
(error "No valid timestamps found!"))))))
(defun pb/svn-repo (dir)
"Get the current svn repo for DIR."
(pb/run-process-match "URL: \\(.*\\)" dir "svn" "info"))
(defun pb/trim (str &optional chr)
"Return a copy of STR without any trailing CHR (or space if unspecified)."
(if (equal (elt str (1- (length str))) (or chr ? ))
(substring str 0 (1- (length str)))
str))
(defun pb/princ-exists (dir)
"Print a message that the contents of DIR will be updated."
(pb/message "Updating %s" dir))
(defun pb/princ-checkout (repo dir)
"Print a message that REPO will be checked out into DIR."
(pb/message "Cloning %s to %s" repo dir))
(defun pb/checkout-svn (name config dir)
"Check package NAME with config CONFIG out of svn into DIR."
(unless package-build-stable
(with-current-buffer (get-buffer-create "*package-build-checkout*")
(let ((repo (pb/trim (plist-get config :url) ?/))
(bound (goto-char (point-max))))
(cond
((and (file-exists-p (expand-file-name ".svn" dir))
(string-equal (pb/svn-repo dir) repo))
(pb/princ-exists dir)
(pb/run-process dir "svn" "up"))
(t
(when (file-exists-p dir)
(delete-directory dir t))
(pb/princ-checkout repo dir)
(pb/run-process nil "svn" "checkout" repo dir)))
(apply 'pb/run-process dir "svn" "info"
(pb/expand-source-file-list dir config))
(or (pb/find-parse-time-latest "Last Changed Date: \\([0-9]\\{4\\}-[0-9]\\{2\\}-[0-9]\\{2\\} [0-9]\\{2\\}:[0-9]\\{2\\}:[0-9]\\{2\\}\\( [+-][0-9]\\{4\\}\\)?\\)" bound)
(error "No valid timestamps found!"))))))
(defun pb/cvs-repo (dir)
"Get the current CVS root and repository for DIR.
Return a cons cell whose `car' is the root and whose `cdr' is the repository."
(apply 'cons
(mapcar (lambda (file)
(pb/string-rtrim (pb/slurp-file (expand-file-name file dir))))
'("CVS/Root" "CVS/Repository"))))
(defun pb/checkout-cvs (name config dir)
"Check package NAME with config CONFIG out of cvs into DIR."
(unless package-build-stable
(with-current-buffer (get-buffer-create "*package-build-checkout*")
(let ((root (pb/trim (plist-get config :url) ?/))
(repo (or (plist-get config :module) (symbol-name name)))
(bound (goto-char (point-max))))
(cond
((and (file-exists-p (expand-file-name "CVS" dir))
(equal (pb/cvs-repo dir) (cons root repo)))
(pb/princ-exists dir)
(pb/run-process dir "cvs" "update" "-dP"))
(t
(when (file-exists-p dir)
(delete-directory dir t))
(pb/princ-checkout (format "%s from %s" repo root) dir)
;; CVS insists on relative paths as target directory for checkout (for
;; whatever reason), and puts "CVS" directories into every subdirectory
;; of the current working directory given in the target path. To get CVS
;; to just write to DIR, we need to execute CVS from the parent
;; directory of DIR, and specific DIR as relative path. Hence all the
;; following mucking around with paths. CVS is really horrid.
(let* ((dir (directory-file-name dir))
(working-dir (file-name-directory dir))
(target-dir (file-name-nondirectory dir)))
(pb/run-process working-dir "env" "TZ=UTC" "cvs" "-z3" "-d" root "checkout"
"-d" target-dir repo))))
(apply 'pb/run-process dir "cvs" "log"
(pb/expand-source-file-list dir config))
(or (pb/find-parse-time-latest "date: \\([0-9]\\{4\\}-[0-9]\\{2\\}-[0-9]\\{2\\} [0-9]\\{2\\}:[0-9]\\{2\\}:[0-9]\\{2\\}\\( [+-][0-9]\\{4\\}\\)?\\)" bound)
(pb/find-parse-time-latest "date: \\([0-9]\\{4\\}/[0-9]\\{2\\}/[0-9]\\{2\\} [0-9]\\{2\\}:[0-9]\\{2\\}:[0-9]\\{2\\}\\);" bound)
(error "No valid timestamps found!"))
))))
(defun pb/git-repo (dir)
"Get the current git repo for DIR."
(pb/run-process-match
"Fetch URL: \\(.*\\)" dir "git" "remote" "show" "-n" "origin"))
(defun pb/git-head-branch (dir)
"Get the current git repo for DIR."
(or (ignore-errors
(pb/run-process-match
"HEAD branch: \\(.*\\)" dir "git" "remote" "show" "origin"))
"master"))
(defun pb/checkout-git (name config dir)
"Check package NAME with config CONFIG out of git into DIR."
(let ((repo (plist-get config :url))
(commit (or (plist-get config :commit)
(let ((branch (plist-get config :branch)))
(when branch
(concat "origin/" branch))))))
(with-current-buffer (get-buffer-create "*package-build-checkout*")
(goto-char (point-max))
(cond
((and (file-exists-p (expand-file-name ".git" dir))
(string-equal (pb/git-repo dir) repo))
(pb/princ-exists dir)
(pb/run-process dir "git" "remote" "update"))
(t
(when (file-exists-p dir)
(delete-directory dir t))
(pb/princ-checkout repo dir)
(pb/run-process nil "git" "clone" repo dir)))
(if package-build-stable
(let* ((bound (goto-char (point-max)))
(tag-version (and (pb/run-process dir "git" "tag")
(or (pb/find-tag-version-newest
"^\\(?:v[.-]?\\)?\\([0-9]+[^ \t\n]*\\)$" bound)
(error
"No valid stable versions found for %s"
name)))))
;; Using reset --hard here to comply with what's used for
;; unstable, but maybe this should be a checkout?
(pb/run-process dir "git" "reset" "--hard" (concat "tags/" (car tag-version)))
(pb/run-process dir "git" "submodule" "update" "--init" "--recursive")
(cadr tag-version))
(pb/run-process dir "git" "reset" "--hard"
(or commit (concat "origin/" (pb/git-head-branch dir))))
(pb/run-process dir "git" "submodule" "update" "--init" "--recursive")
(apply 'pb/run-process dir "git" "log" "--first-parent" "-n1" "--pretty=format:'\%ci'"
(pb/expand-source-file-list dir config))
(pb/find-parse-time
"\\([0-9]\\{4\\}-[0-9]\\{2\\}-[0-9]\\{2\\} [0-9]\\{2\\}:[0-9]\\{2\\}:[0-9]\\{2\\}\\( [+-][0-9]\\{4\\}\\)?\\)")))))
(defun pb/checkout-github (name config dir)
"Check package NAME with config CONFIG out of github into DIR."
(let* ((url (format "git://github.com/%s.git" (plist-get config :repo))))
(pb/checkout-git name (plist-put (copy-sequence config) :url url) dir)))
(defun pb/bzr-expand-repo (repo)
"Get REPO expanded name."
(pb/run-process-match "\\(?:branch root\\|repository branch\\): \\(.*\\)" nil "bzr" "info" repo))
(defun pb/bzr-repo (dir)
"Get the current bzr repo for DIR."
(pb/run-process-match "parent branch: \\(.*\\)" dir "bzr" "info"))
(defun pb/checkout-bzr (name config dir)
"Check package NAME with config CONFIG out of bzr into DIR."
(unless package-build-stable
(let ((repo (pb/bzr-expand-repo (plist-get config :url))))
(with-current-buffer (get-buffer-create "*package-build-checkout*")
(goto-char (point-max))
(cond
((and (file-exists-p (expand-file-name ".bzr" dir))
(string-equal (pb/bzr-repo dir) repo))
(pb/princ-exists dir)
(pb/run-process dir "bzr" "merge"))
(t
(when (file-exists-p dir)
(delete-directory dir t))
(pb/princ-checkout repo dir)
(pb/run-process nil "bzr" "branch" repo dir)))
(apply 'pb/run-process dir "bzr" "log" "-l1"
(pb/expand-source-file-list dir config))
(pb/find-parse-time
"\\([0-9]\\{4\\}-[0-9]\\{2\\}-[0-9]\\{2\\} [0-9]\\{2\\}:[0-9]\\{2\\}:[0-9]\\{2\\}\\( [+-][0-9]\\{4\\}\\)?\\)")))))
(defun pb/hg-repo (dir)
"Get the current hg repo for DIR."
(pb/run-process-match "default = \\(.*\\)" dir "hg" "paths"))
(defun pb/checkout-hg (name config dir)
"Check package NAME with config CONFIG out of hg into DIR."
(let ((repo (plist-get config :url)))
(with-current-buffer (get-buffer-create "*package-build-checkout*")
(goto-char (point-max))
(cond
((and (file-exists-p (expand-file-name ".hg" dir))
(string-equal (pb/hg-repo dir) repo))
(pb/princ-exists dir)
(pb/run-process dir "hg" "pull")
(pb/run-process dir "hg" "update"))
(t
(when (file-exists-p dir)
(delete-directory dir t))
(pb/princ-checkout repo dir)
(pb/run-process nil "hg" "clone" repo dir)))
(if package-build-stable
(let* ((bound (goto-char (point-max)))
(tag-version (and (pb/run-process dir "hg" "tags")
(or (pb/find-tag-version-newest
"^\\(?:v[.-]?\\)?\\([0-9]+[^ \t\n]*\\)[ \t]*[0-9]+:\\([[:xdigit:]]+\\)$"
bound
2)
(error
"No valid stable versions found for %s"
name)))))
(pb/run-process dir "hg" "update" (nth 2 tag-version))
(cadr tag-version))
(apply 'pb/run-process dir "hg" "log" "--style" "compact" "-l1"
(pb/expand-source-file-list dir config))
(pb/find-parse-time
"\\([0-9]\\{4\\}-[0-9]\\{2\\}-[0-9]\\{2\\} [0-9]\\{2\\}:[0-9]\\{2\\}\\( [+-][0-9]\\{4\\}\\)?\\)")))))
(defun pb/dump (data file &optional pretty-print)
"Write DATA to FILE as a Lisp sexp.
Optionally PRETTY-PRINT the data."
(with-temp-file file
(pb/message "File: %s" file)
(if pretty-print
(pp data (current-buffer))
(print data (current-buffer)))))
(defun pb/write-pkg-file (pkg-file pkg-info)
"Write PKG-FILE containing PKG-INFO."
(with-temp-file pkg-file
(pp
`(define-package
,(aref pkg-info 0)
,(aref pkg-info 3)
,(aref pkg-info 2)
',(mapcar
(lambda (elt)
(list (car elt)
(package-version-join (cadr elt))))
(aref pkg-info 1))
;; Append our extra information
,@(apply #'append (mapcar (lambda (entry)
(let ((value (cdr entry)))
(when (or (symbolp value) (listp value))
;; We must quote lists and symbols,
;; because Emacs 24.3 and earlier evaluate
;; the package information, which would
;; break for unquoted symbols or lists
(setq value (list 'quote value)))
(list (car entry) value)))
(when (> (length pkg-info) 4)
(aref pkg-info 4)))))
(current-buffer))
(princ ";; Local Variables:\n;; no-byte-compile: t\n;; End:\n" (current-buffer))))
(defun pb/read-from-file (file-name)
"Read and return the Lisp data stored in FILE-NAME, or nil if no such file exists."
(when (file-exists-p file-name)
(car (read-from-string (pb/slurp-file file-name)))))
(defun pb/create-tar (file dir &optional files)
"Create a tar FILE containing the contents of DIR, or just FILES if non-nil."
(apply 'process-file
package-build-tar-executable nil
(get-buffer-create "*package-build-checkout*")
nil "-cvf"
file
"--exclude=.svn"
"--exclude=CVS"
"--exclude=.git*"
"--exclude=_darcs"
"--exclude=.fslckout"
"--exclude=_FOSSIL_"
"--exclude=.bzr"
"--exclude=.hg"
(or (mapcar (lambda (fn) (concat dir "/" fn)) files) (list dir))))
(defun pb/find-package-commentary (file-path)
"Get commentary section from FILE-PATH."
(when (file-exists-p file-path)
(with-temp-buffer
(insert-file-contents file-path)
(lm-commentary))))
(defun pb/write-pkg-readme (target-dir commentary file-name)
"In TARGET-DIR, write COMMENTARY to a -readme.txt file prefixed with FILE-NAME."
(when commentary
(with-temp-buffer
(insert commentary)
;; Adapted from `describe-package-1'.
(goto-char (point-min))
(save-excursion
(when (re-search-forward "^;;; Commentary:\n" nil t)
(replace-match ""))
(while (re-search-forward "^\\(;+ ?\\)" nil t)
(replace-match ""))
(goto-char (point-min))
(when (re-search-forward "\\`\\( *\n\\)+" nil t)
(replace-match "")))
(delete-trailing-whitespace)
(let ((coding-system-for-write buffer-file-coding-system))
(write-region nil nil
(pb/readme-file-name target-dir file-name))))))
(defun pb/readme-file-name (target-dir file-name)
"Name of the readme file in TARGET-DIR for the package FILE-NAME."
(expand-file-name (concat file-name "-readme.txt")
target-dir))
(defun pb/update-or-insert-version (version)
"Ensure current buffer has a \"Version: VERSION\" header."
(goto-char (point-min))
(if (re-search-forward "^;;;* *Version: *" nil t)
(progn
(move-beginning-of-line nil)
(search-forward "V" nil t)
(backward-char)
(insert "X-Original-")
(move-beginning-of-line nil))
(forward-line))
(insert (format ";; Version: %s" version))
(newline))
(defun pb/ensure-ends-here-line (file-path)
"Add a 'FILE-PATH ends here' trailing line if missing."
(save-excursion
(goto-char (point-min))
(let* ((fname (file-name-nondirectory file-path))
(trailer (concat ";;; " fname " ends here")))
(unless (search-forward trailer nil t)
(goto-char (point-max))
(newline)
(insert trailer)
(newline)))))
(defun pb/get-package-info (file-path)
"Get a vector of package info from the docstrings in FILE-PATH."
(when (file-exists-p file-path)
(ignore-errors
(with-temp-buffer
(insert-file-contents file-path)
;; next few lines are a hack for some packages that aren't
;; commented properly.
(pb/update-or-insert-version "0")
(pb/ensure-ends-here-line file-path)
(cl-flet ((package-strip-rcs-id (str) "0"))
(pb/package-buffer-info-vec))))))
(defun pb/get-pkg-file-info (file-path)
"Get a vector of package info from \"-pkg.el\" file FILE-PATH."
(when (file-exists-p file-path)
(let ((package-def (pb/read-from-file file-path)))
(if (eq 'define-package (car package-def))
(let* ((pkgfile-info (cdr package-def))
(descr (nth 2 pkgfile-info)))
(when (string-match "[\r\n]" descr)
(error "Illegal multi-line package description in %s" file-path))
(vector
(nth 0 pkgfile-info)
(mapcar
(lambda (elt)
(list (car elt) (version-to-list (cadr elt))))
(eval (nth 3 pkgfile-info)))
descr
(nth 1 pkgfile-info)))
(error "No define-package found in %s" file-path)))))
(defun pb/merge-package-info (pkg-info name version)
"Return a version of PKG-INFO updated with NAME, VERSION and info from CONFIG.
If PKG-INFO is nil, an empty one is created."
(let* ((merged (or (copy-sequence pkg-info)
(vector name nil "No description available." version))))
(aset merged 0 name)
(aset merged 3 version)
merged))
(defun pb/archive-entry (pkg-info type)
"Return the archive-contents cons cell for PKG-INFO and TYPE."
(let* ((name (intern (aref pkg-info 0)))
(requires (aref pkg-info 1))
(desc (or (aref pkg-info 2) "No description available."))
(version (aref pkg-info 3))
(extras (when (> (length pkg-info) 4)
(aref pkg-info 4))))
(cons name
(vector (version-to-list version)
requires
desc
type
extras))))
(defun pb/archive-file-name (archive-entry)
"Return the path of the file in which the package for ARCHIVE-ENTRY is stored."
(let* ((name (car archive-entry))
(pkg-info (cdr archive-entry))
(version (package-version-join (aref pkg-info 0)))
(flavour (aref pkg-info 3)))
(expand-file-name
(format "%s-%s.%s" name version (if (eq flavour 'single) "el" "tar"))
package-build-archive-dir)))
(defun pb/entry-file-name (archive-entry)
"Return the path of the file in which the package for ARCHIVE-ENTRY is stored."
(let* ((name (car archive-entry))
(pkg-info (cdr archive-entry))
(version (package-version-join (aref pkg-info 0))))
(expand-file-name
(format "%s-%s.entry" name version)
package-build-archive-dir)))
(defun pb/delete-file-if-exists (file)
"Delete FILE if it exists."
(when (file-exists-p file)
(delete-file file)))
(defun pb/remove-archive-files (archive-entry)
"Remove ARCHIVE-ENTRY from archive-contents, and delete associated file.
Note that the working directory (if present) is not deleted by
this function, since the archive list may contain another version
of the same-named package which is to be kept."
(pb/message "Removing archive: %s" archive-entry)
(mapcar 'pb/delete-file-if-exists
(list (pb/archive-file-name archive-entry)
(pb/entry-file-name archive-entry))))
(defun pb/read-recipe (file-name)
"Return the plist of recipe info for the package called FILE-NAME."
(let ((pkg-info (pb/read-from-file file-name)))
(if (string= (symbol-name (car pkg-info))
(file-name-nondirectory file-name))
pkg-info
(error "Recipe '%s' contains mismatched package name '%s'"
(file-name-nondirectory file-name)
(car pkg-info)))))
(defun pb/read-recipes ()
"Return a list of data structures for all recipes in `package-build-recipes-dir'."
(cl-loop for file-name in (directory-files package-build-recipes-dir t "^[^.]")
collect (pb/read-recipe file-name)))
(defun pb/read-recipes-ignore-errors ()
"Return a list of data structures for all recipes in `package-build-recipes-dir'."
(cl-loop for file-name in (directory-files package-build-recipes-dir t "^[^.]")
for pkg-info = (condition-case err (pb/read-recipe file-name)
(error (pb/message "Error reading recipe %s: %s"
file-name
(error-message-string err))
nil))
when pkg-info
collect pkg-info))
(defun package-build-expand-file-specs (dir specs &optional subdir allow-empty)
"In DIR, expand SPECS, optionally under SUBDIR.
The result is a list of (SOURCE . DEST), where SOURCE is a source
file path and DEST is the relative path to which it should be copied.
If the resulting list is empty, an error will be reported. Pass t
for ALLOW-EMPTY to prevent this error."
(let ((default-directory dir)
(prefix (if subdir (format "%s/" subdir) ""))
(lst))
(dolist (entry specs lst)
(setq lst
(if (consp entry)
(if (eq :exclude (car entry))
(cl-nset-difference lst
(package-build-expand-file-specs dir (cdr entry) nil t)
:key 'car
:test 'equal)
(nconc lst
(package-build-expand-file-specs
dir
(cdr entry)
(concat prefix (car entry))
t)))
(nconc
lst (mapcar (lambda (f)
(let ((destname)))
(cons f
(concat prefix
(replace-regexp-in-string
"\\.in\\'"
""
(file-name-nondirectory f)))))
(file-expand-wildcards entry))))))
(when (and (null lst) (not allow-empty))
(error "No matching file(s) found in %s: %s" dir specs))
lst))
(defun pb/config-file-list (config)
"Get the :files spec from CONFIG, or return `package-build-default-files-spec'."
(or (plist-get config :files) package-build-default-files-spec))
(defun pb/expand-source-file-list (dir config)
"Shorthand way to expand paths in DIR for source files listed in CONFIG."
(mapcar 'car (package-build-expand-file-specs dir (pb/config-file-list config))))
(defun pb/generate-info-files (files source-dir target-dir)
"Create .info files from any .texi files listed in FILES.
The source and destination file paths are expanded in SOURCE-DIR
and TARGET-DIR respectively.
Any of the original .texi(nfo) files found in TARGET-DIR are
deleted."
(dolist (spec files)
(let* ((source-file (car spec))
(source-path (expand-file-name source-file source-dir))
(dest-file (cdr spec))
(info-path (expand-file-name
(concat (file-name-sans-extension dest-file) ".info")
target-dir)))
(when (string-match ".texi\\(nfo\\)?$" source-file)
(when (not (file-exists-p info-path))
(with-current-buffer (get-buffer-create "*package-build-info*")
(ignore-errors
(pb/run-process
(file-name-directory source-path)
"makeinfo"
source-path
"-o"
info-path)
(pb/message "Created %s" info-path))))
(pb/message "Removing %s" (expand-file-name dest-file target-dir))
(delete-file (expand-file-name dest-file target-dir))))))
(defun pb/generate-dir-file (files target-dir)
"Create dir file from any .info files listed in FILES in TARGET-DIR."
(dolist (spec files)
(let* ((source-file (car spec))
(dest-file (cdr spec))
(info-path (expand-file-name
(concat (file-name-sans-extension dest-file) ".info")
target-dir)))
(when (and (or (string-match ".info$" source-file)
(string-match ".texi\\(nfo\\)?$" source-file))
(file-exists-p info-path))
(with-current-buffer (get-buffer-create "*package-build-info*")
(ignore-errors
(pb/run-process
nil
"install-info"
(concat "--dir=" (expand-file-name "dir" target-dir))
info-path)))))))
(defun pb/copy-package-files (files source-dir target-dir)
"Copy FILES from SOURCE-DIR to TARGET-DIR.
FILES is a list of (SOURCE . DEST) relative filepath pairs."
(cl-loop for (source-file . dest-file) in files
do (pb/copy-file
(expand-file-name source-file source-dir)
(expand-file-name dest-file target-dir))))
(defun pb/copy-file (file newname)
"Copy FILE to NEWNAME and create parent directories for NEWNAME if they don't exist."
(let ((newdir (file-name-directory newname)))
(unless (file-exists-p newdir)
(make-directory newdir t)))
(cond
((file-regular-p file)
(pb/message "%s -> %s" file newname)
(copy-file file newname))
((file-directory-p file)
(pb/message "%s => %s" file newname)
(copy-directory file newname))))
(defun pb/package-name-completing-read ()
"Prompt for a package name, returning a symbol."
(intern (completing-read "Package: " (package-build-recipe-alist))))
(defun pb/find-source-file (target files)
"Search for source of TARGET in FILES."
(let* ((entry (rassoc target files)))
(when entry (car entry))))
(defun pb/find-package-file (name)
"Return the filename of the most recently built package of NAME."
(pb/archive-file-name (assoc name (package-build-archive-alist))))
(defun pb/package-buffer-info-vec ()
"Return a vector of package info.
`package-buffer-info' returns a vector in older Emacs versions,
and a cl struct in Emacs HEAD. This wrapper normalises the results."
(let ((desc (package-buffer-info))
(keywords (lm-keywords-list)))
(if (fboundp 'package-desc-create)
(let ((extras (package-desc-extras desc)))
(when (and keywords (not (assq :keywords extras)))
;; Add keywords to package properties, if not already present
(push (cons :keywords keywords) extras))
(vector (package-desc-name desc)
(package-desc-reqs desc)
(package-desc-summary desc)
(package-desc-version desc)
extras))
;; The regexp and the processing is taken from `lm-homepage' in Emacs 24.4
(let* ((page (lm-header "\\(?:x-\\)?\\(?:homepage\\|url\\)"))
(homepage (if (and page (string-match "^<.+>$" page))
(substring page 1 -1)
page))
extras)
(when keywords (push (cons :keywords keywords) extras))
(when homepage (push (cons :url homepage) extras))
(vector (aref desc 0)
(aref desc 1)
(aref desc 2)
(aref desc 3)
extras)))))
;;; Public interface
;;;###autoload
(defun package-build-archive (name)
"Build a package archive for package NAME."
(interactive (list (pb/package-name-completing-read)))
(let* ((file-name (symbol-name name))
(rcp (or (cdr (assoc name (package-build-recipe-alist)))
(error "Cannot find package %s" file-name)))
(pkg-working-dir
(file-name-as-directory
(expand-file-name file-name package-build-working-dir))))
(unless (file-exists-p package-build-archive-dir)
(pb/message "Creating directory %s" package-build-archive-dir)
(make-directory package-build-archive-dir))
(pb/message "\n;;; %s\n" file-name)
(let* ((version (package-version-join
(version-to-list
(or (package-build-checkout name rcp pkg-working-dir)
(error "No valid package version found!")))))
(default-directory package-build-working-dir)
(start-time (current-time))
(archive-entry (package-build-package (symbol-name name)
version
(pb/config-file-list rcp)
pkg-working-dir
package-build-archive-dir)))
(pb/dump archive-entry (pb/entry-file-name archive-entry))
(when package-build-write-melpa-badge-images
(pb/write-melpa-badge-image (symbol-name name) version package-build-archive-dir))
(pb/message "Built in %.3fs, finished at %s"
(time-to-seconds (time-since start-time))
(current-time-string))
file-name)))
;;;###autoload
(defun package-build-package (package-name version file-specs source-dir target-dir)
"Create PACKAGE-NAME with VERSION.
The information in FILE-SPECS is used to gather files from
SOURCE-DIR.
The resulting package will be stored as a .el or .tar file in
TARGET-DIR, depending on whether there are multiple files.
Argument FILE-SPECS is a list of specs for source files, which
should be relative to SOURCE-DIR. The specs can be wildcards,
and optionally specify different target paths. They extended
syntax is currently only documented in the MELPA README. You can
simply pass `package-build-default-files-spec' in most cases.
Returns the archive entry for the package."
(when (symbolp package-name)
(setq package-name (symbol-name package-name)))
(let ((files (package-build-expand-file-specs source-dir file-specs)))
(unless (equal file-specs package-build-default-files-spec)
(when (equal files (package-build-expand-file-specs
source-dir package-build-default-files-spec nil t))
(pb/message "Note: this :files spec is equivalent to the default.")))
(cond
((not version)
(error "Unable to check out repository for %s" package-name))
((= 1 (length files))
(pb/build-single-file-package package-name version (caar files) source-dir target-dir))
((< 1 (length files))
(pb/build-multi-file-package package-name version files source-dir target-dir))
(t (error "Unable to find files matching recipe patterns")))))
(defun pb/build-single-file-package (package-name version file source-dir target-dir)
(let* ((pkg-source (expand-file-name file source-dir))
(pkg-target (expand-file-name
(concat package-name "-" version ".el")
target-dir))
(pkg-info (pb/merge-package-info
(pb/get-package-info pkg-source)
package-name
version)))
(unless (string-equal (downcase (concat package-name ".el"))
(downcase (file-name-nondirectory pkg-source)))
(error "Single file %s does not match package name %s"
(file-name-nondirectory pkg-source) package-name))
(when (file-exists-p pkg-target)
(delete-file pkg-target))
(copy-file pkg-source pkg-target)
(let ((enable-local-variables nil)
(make-backup-files nil))
(with-current-buffer (find-file pkg-target)
(pb/update-or-insert-version version)
(pb/ensure-ends-here-line pkg-source)
(write-file pkg-target nil)
(condition-case err
(pb/package-buffer-info-vec)
(error
(pb/message "Warning: %S" err)))
(kill-buffer)))
(pb/write-pkg-readme target-dir
(pb/find-package-commentary pkg-source)
package-name)
(pb/archive-entry pkg-info 'single)))
(defun pb/build-multi-file-package (package-name version files source-dir target-dir)
(let* ((tmp-dir (file-name-as-directory (make-temp-file package-name t)))
(pkg-dir-name (concat package-name "-" version))
(pkg-tmp-dir (expand-file-name pkg-dir-name tmp-dir))
(pkg-file (concat package-name "-pkg.el"))
(pkg-file-source (or (pb/find-source-file pkg-file files)
pkg-file))
(file-source (concat package-name ".el"))
(pkg-source (or (pb/find-source-file file-source files)
file-source))
(pkg-info (pb/merge-package-info
(let ((default-directory source-dir))
(or (pb/get-pkg-file-info pkg-file-source)
;; some packages (like magit) provide name-pkg.el.in
(pb/get-pkg-file-info
(expand-file-name (concat pkg-file ".in")
(file-name-directory pkg-source)))
(pb/get-package-info pkg-source)))
package-name
version)))
(pb/copy-package-files files source-dir pkg-tmp-dir)
(pb/write-pkg-file (expand-file-name pkg-file
(file-name-as-directory pkg-tmp-dir))
pkg-info)
(pb/generate-info-files files source-dir pkg-tmp-dir)
(pb/generate-dir-file files pkg-tmp-dir)
(let ((default-directory tmp-dir))
(pb/create-tar (expand-file-name (concat package-name "-" version ".tar")
target-dir)
pkg-dir-name))
(let ((default-directory source-dir))
(pb/write-pkg-readme target-dir
(pb/find-package-commentary pkg-source)
package-name))
(delete-directory pkg-tmp-dir t nil)
(pb/archive-entry pkg-info 'tar)))
;; In future we should provide a hook, and perform this step in a separate package.
;; Note also that it would be straightforward to generate the SVG ourselves, which would
;; save the network overhead.
(defun pb/write-melpa-badge-image (package-name version target-dir)
(url-copy-file
(concat "http://img.shields.io/badge/"
(if package-build-stable "melpa stable" "melpa")
"-"
(url-hexify-string version)
"-"
(if package-build-stable "3e999f" "922793")
".svg")
(expand-file-name (concat package-name "-badge.svg") target-dir)
t))
;;; Helpers for recipe authors
(defvar package-build-minor-mode-map
(let ((m (make-sparse-keymap)))
(define-key m (kbd "C-c C-c") 'package-build-current-recipe)
m)
"Keymap for `package-build-minor-mode'.")
(define-minor-mode package-build-minor-mode
"Helpful functionality for building packages."
nil
" PBuild"
package-build-minor-mode-map)
;;;###autoload
(defun package-build-create-recipe (name fetcher)
"Create a new recipe for package NAME using FETCHER."
(interactive
(list (intern (read-string "Package name: "))
(intern
(let ((fetcher-types (mapcar #'symbol-name '(github git wiki bzr hg cvs svn))))
(completing-read
"Fetcher: "
fetcher-types
nil t nil nil (car fetcher-types))))))
(let ((recipe-file (expand-file-name (symbol-name name) package-build-recipes-dir)))
(when (file-exists-p recipe-file)
(error "Recipe already exists"))
(find-file recipe-file)
(let* ((extra-params
(cond
((eq 'github fetcher) '(:repo "USER/REPO"))
((eq 'wiki fetcher) '())
(t '(:url "SCM_URL_HERE"))))
(template `(,name :fetcher ,fetcher ,@extra-params)))
(insert (pp-to-string template))
(emacs-lisp-mode)
(package-build-minor-mode)
(goto-char (point-min)))))
;;;###autoload
(defun package-build-current-recipe ()
"Build archive for the recipe defined in the current buffer."
(interactive)
(unless (and (buffer-file-name)
(file-equal-p (file-name-directory (buffer-file-name))
package-build-recipes-dir))
(error "Buffer is not visiting a recipe"))
(when (buffer-modified-p)
(if (y-or-n-p (format "Save file %s? " buffer-file-name))
(save-buffer)
(error "Aborting")))
(check-parens)
(package-build-reinitialize)
(let ((pkg-name (intern (file-name-nondirectory (buffer-file-name)))))
(package-build-archive pkg-name)
(package-build-dump-archive-contents)
(let ((output-buffer-name "*package-build-result*"))
(with-output-to-temp-buffer output-buffer-name
(princ ";; Please check the following package descriptor.\n")
(princ ";; If the correct package description or dependencies are missing,\n")
(princ ";; then the source .el file is likely malformed, and should be fixed.\n")
(pp (assoc pkg-name (package-build-archive-alist))))
(with-current-buffer output-buffer-name
(emacs-lisp-mode)
(view-mode)))
(when (yes-or-no-p "Install new package? ")
(package-install-file (pb/find-package-file pkg-name)))))
(defun package-build-archive-ignore-errors (pkg)
"Build archive for package PKG, ignoring any errors."
(interactive (list (pb/package-name-completing-read)))
(let* ((debug-on-error t)
(debug-on-signal t)
(pb/debugger-return nil)
(debugger (lambda (&rest args)
(setq pb/debugger-return (with-output-to-string
(backtrace))))))
(condition-case err
(package-build-archive pkg)
(error
(pb/message "%s" (error-message-string err))
nil))))
;;;###autoload
(defun package-build-all ()
"Build all packages in the `package-build-recipe-alist'."
(interactive)
(let ((failed (cl-loop for pkg in (mapcar 'car (package-build-recipe-alist))
when (not (package-build-archive-ignore-errors pkg))
collect pkg)))
(if (not failed)
(princ "\nSuccessfully Compiled All Packages\n")
(princ "\nFailed to Build the Following Packages\n")
(princ (mapconcat 'symbol-name failed "\n"))
(princ "\n")))
(package-build-cleanup))
(defun package-build-cleanup ()
"Remove previously-built packages that no longer have recipes."
(interactive)
(let* ((known-package-names (mapcar 'car (package-build-recipe-alist)))
(stale-archives (cl-loop for built in (pb/archive-entries)
when (not (memq (car built) known-package-names))
collect built)))
(mapc 'pb/remove-archive-files stale-archives)
(package-build-dump-archive-contents)))
(defun package-build-recipe-alist ()
"Retun the list of avalailable packages."
(unless pb/recipe-alist-initialized
(setq pb/recipe-alist (pb/read-recipes-ignore-errors)
pb/recipe-alist-initialized t))
pb/recipe-alist)
(defun package-build-archive-alist ()
"Return the archive list."
(cdr (pb/read-from-file
(expand-file-name "archive-contents"
package-build-archive-dir))))
(defun package-build-reinitialize ()
"Forget any information about packages which have already been built."
(interactive)
(setq pb/recipe-alist-initialized nil))
(defun package-build-dump-archive-contents (&optional file-name)
"Dump the list of built packages to FILE-NAME.
If FILE-NAME is not specified, the default archive-contents file is used."
(pb/dump (cons 1 (pb/archive-entries))
(or file-name
(expand-file-name "archive-contents" package-build-archive-dir))))
(defun pb/archive-entries ()
"Read all .entry files from the archive directory and return a list of all entries."
(let ((entries '()))
(dolist (new (mapcar 'pb/read-from-file
(directory-files package-build-archive-dir t
".*\.entry$"))
entries)
(let ((old (assq (car new) entries)))
(when old
(when (version-list-< (elt (cdr new) 0)
(elt (cdr old) 0))
;; swap old and new
(cl-rotatef old new))
(pb/remove-archive-files old)
(setq entries (remove old entries)))
(add-to-list 'entries new)))))
;;; Exporting data as json
(defun package-build-recipe-alist-as-json (file-name)
"Dump the recipe list to FILE-NAME as json."
(interactive)
(with-temp-file file-name
(insert (json-encode (package-build-recipe-alist)))))
(defun pb/sym-to-keyword (s)
"Return a version of symbol S as a :keyword."
(intern (concat ":" (symbol-name s))))
(defun pb/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) (elt info 4))))
(list :ver ver
:deps (apply 'append
(mapcar (lambda (dep)
(list (pb/sym-to-keyword (car dep))
(cadr dep)))
deps))
:desc desc
:type type
:props props)))
(defun pb/archive-alist-for-json ()
"Return the archive alist in a form suitable for JSON encoding."
(apply 'append
(mapcar (lambda (entry)
(list (pb/sym-to-keyword (car entry))
(pb/pkg-info-for-json (cdr entry))))
(package-build-archive-alist))))
(defun package-build-archive-alist-as-json (file-name)
"Dump the build packages list to FILE-NAME as json."
(interactive)
(with-temp-file file-name
(insert (json-encode (pb/archive-alist-for-json)))))
(provide 'package-build)
;; Local Variables:
;; coding: utf-8
;; eval: (checkdoc-minor-mode 1)
;; End:
;;; package-build.el ends here
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