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diff --git a/configs/shared/emacs/.emacs.d/elpa/epl-20180205.1249/epl.el b/configs/shared/emacs/.emacs.d/elpa/epl-20180205.1249/epl.el new file mode 100644 index 000000000000..918ec466ab60 --- /dev/null +++ b/configs/shared/emacs/.emacs.d/elpa/epl-20180205.1249/epl.el @@ -0,0 +1,711 @@ +;;; epl.el --- Emacs Package Library -*- lexical-binding: t; -*- + +;; Copyright (C) 2013-2015 Sebastian Wiesner +;; Copyright (C) 1985-1986, 1992, 1994-1995, 1999-2015 Free Software + +;; Author: Sebastian Wiesner <swiesner@lunaryorn.com> +;; Maintainer: Johan Andersson <johan.rejeep@gmail.com> +;; Sebastian Wiesner <swiesner@lunaryorn.com> +;; Version: 0.10-cvs +;; Package-Version: 20180205.1249 +;; Package-Requires: ((cl-lib "0.3")) +;; Keywords: convenience +;; URL: http://github.com/cask/epl + +;; This file is NOT part of GNU Emacs. + +;; 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: + +;; A package management library for Emacs, based on package.el. + +;; The purpose of this library is to wrap all the quirks and hassle of +;; package.el into a sane API. + +;; The following functions comprise the public interface of this library: + +;;; Package directory selection + +;; `epl-package-dir' gets the directory of packages. + +;; `epl-default-package-dir' gets the default package directory. + +;; `epl-change-package-dir' changes the directory of packages. + +;;; Package system management + +;; `epl-initialize' initializes the package system and activates all +;; packages. + +;; `epl-reset' resets the package system. + +;; `epl-refresh' refreshes all package archives. + +;; `epl-add-archive' adds a new package archive. + +;;; Package objects + +;; Struct `epl-requirement' describes a requirement of a package with `name' and +;; `version' slots. + +;; `epl-requirement-version-string' gets a requirement version as string. + +;; Struct `epl-package' describes an installed or installable package with a +;; `name' and some internal `description'. + +;; `epl-package-version' gets the version of a package. + +;; `epl-package-version-string' gets the version of a package as string. + +;; `epl-package-summary' gets the summary of a package. + +;; `epl-package-requirements' gets the requirements of a package. + +;; `epl-package-directory' gets the installation directory of a package. + +;; `epl-package-from-buffer' creates a package object for the package contained +;; in the current buffer. + +;; `epl-package-from-file' creates a package object for a package file, either +;; plain lisp or tarball. + +;; `epl-package-from-descriptor-file' creates a package object for a package +;; description (i.e. *-pkg.el) file. + +;;; Package database access + +;; `epl-package-installed-p' determines whether a package is installed, either +;; built-in or explicitly installed. + +;; `epl-package-outdated-p' determines whether a package is outdated, that is, +;; whether a package with a higher version number is available. + +;; `epl-built-in-packages', `epl-installed-packages', `epl-outdated-packages' +;; and `epl-available-packages' get all packages built-in, installed, outdated, +;; or available for installation respectively. + +;; `epl-find-built-in-package', `epl-find-installed-packages' and +;; `epl-find-available-packages' find built-in, installed and available packages +;; by name. + +;; `epl-find-upgrades' finds all upgradable packages. + +;; `epl-built-in-p' return true if package is built-in to Emacs. + +;;; Package operations + +;; `epl-install-file' installs a package file. + +;; `epl-package-install' installs a package. + +;; `epl-package-delete' deletes a package. + +;; `epl-upgrade' upgrades packages. + +;;; Code: + +(require 'cl-lib) +(require 'package) + + +(unless (fboundp #'define-error) + ;; `define-error' for 24.3 and earlier, copied from subr.el + (defun define-error (name message &optional parent) + "Define NAME as a new error signal. +MESSAGE is a string that will be output to the echo area if such an error +is signaled without being caught by a `condition-case'. +PARENT is either a signal or a list of signals from which it inherits. +Defaults to `error'." + (unless parent (setq parent 'error)) + (let ((conditions + (if (consp parent) + (apply #'append + (mapcar (lambda (parent) + (cons parent + (or (get parent 'error-conditions) + (error "Unknown signal `%s'" parent)))) + parent)) + (cons parent (get parent 'error-conditions))))) + (put name 'error-conditions + (delete-dups (copy-sequence (cons name conditions)))) + (when message (put name 'error-message message))))) + +(defsubst epl--package-desc-p (package) + "Whether PACKAGE is a `package-desc' object. + +Like `package-desc-p', but return nil, if `package-desc-p' is not +defined as function." + (and (fboundp 'package-desc-p) (package-desc-p package))) + + +;;; EPL errors +(define-error 'epl-error "EPL error") + +(define-error 'epl-invalid-package "Invalid EPL package" 'epl-error) + +(define-error 'epl-invalid-package-file "Invalid EPL package file" + 'epl-invalid-package) + + +;;; Package directory +(defun epl-package-dir () + "Get the directory of packages." + package-user-dir) + +(defun epl-default-package-dir () + "Get the default directory of packages." + (eval (car (get 'package-user-dir 'standard-value)))) + +(defun epl-change-package-dir (directory) + "Change the directory of packages to DIRECTORY." + (setq package-user-dir directory) + (epl-initialize)) + + +;;; Package system management +(defvar epl--load-path-before-initialize nil + "Remember the load path for `epl-reset'.") + +(defun epl-initialize (&optional no-activate) + "Load Emacs Lisp packages and activate them. + +With NO-ACTIVATE non-nil, do not activate packages." + (setq epl--load-path-before-initialize load-path) + (package-initialize no-activate)) + +(defalias 'epl-refresh 'package-refresh-contents) + +(defun epl-add-archive (name url) + "Add a package archive with NAME and URL." + (add-to-list 'package-archives (cons name url))) + +(defun epl-reset () + "Reset the package system. + +Clear the list of installed and available packages, the list of +package archives and reset the package directory." + (setq package-alist nil + package-archives nil + package-archive-contents nil + load-path epl--load-path-before-initialize) + (when (boundp 'package-obsolete-alist) ; Legacy package.el + (setq package-obsolete-alist nil)) + (epl-change-package-dir (epl-default-package-dir))) + + +;;; Package structures +(cl-defstruct (epl-requirement + (:constructor epl-requirement-create)) + "Structure describing a requirement. + +Slots: + +`name' The name of the required package, as symbol. + +`version' The version of the required package, as version list." + name + version) + +(defun epl-requirement-version-string (requirement) + "The version of a REQUIREMENT, as string." + (package-version-join (epl-requirement-version requirement))) + +(cl-defstruct (epl-package (:constructor epl-package-create)) + "Structure representing a package. + +Slots: + +`name' The package name, as symbol. + +`description' The package description. + +The format package description varies between package.el +variants. For `package-desc' variants, it is simply the +corresponding `package-desc' object. For legacy variants, it is +a vector `[VERSION REQS DOCSTRING]'. + +Do not access `description' directly, but instead use the +`epl-package' accessors." + name + description) + +(defmacro epl-package-as-description (var &rest body) + "Cast VAR to a package description in BODY. + +VAR is a symbol, bound to an `epl-package' object. This macro +casts this object to the `description' object, and binds the +description to VAR in BODY." + (declare (indent 1)) + (unless (symbolp var) + (signal 'wrong-type-argument (list #'symbolp var))) + `(if (epl-package-p ,var) + (let ((,var (epl-package-description ,var))) + ,@body) + (signal 'wrong-type-argument (list #'epl-package-p ,var)))) + +(defsubst epl-package--package-desc-p (package) + "Whether the description of PACKAGE is a `package-desc'." + (epl--package-desc-p (epl-package-description package))) + +(defun epl-package-version (package) + "Get the version of PACKAGE, as version list." + (epl-package-as-description package + (cond + ((fboundp 'package-desc-version) (package-desc-version package)) + ;; Legacy + ((fboundp 'package-desc-vers) + (let ((version (package-desc-vers package))) + (if (listp version) version (version-to-list version)))) + (:else (error "Cannot get version from %S" package))))) + +(defun epl-package-version-string (package) + "Get the version from a PACKAGE, as string." + (package-version-join (epl-package-version package))) + +(defun epl-package-summary (package) + "Get the summary of PACKAGE, as string." + (epl-package-as-description package + (cond + ((fboundp 'package-desc-summary) (package-desc-summary package)) + ((fboundp 'package-desc-doc) (package-desc-doc package)) ; Legacy + (:else (error "Cannot get summary from %S" package))))) + +(defsubst epl-requirement--from-req (req) + "Create a `epl-requirement' from a `package-desc' REQ." + (let ((version (cadr req))) + (epl-requirement-create :name (car req) + :version (if (listp version) version + (version-to-list version))))) + +(defun epl-package-requirements (package) + "Get the requirements of PACKAGE. + +The requirements are a list of `epl-requirement' objects." + (epl-package-as-description package + (mapcar #'epl-requirement--from-req (package-desc-reqs package)))) + +(defun epl-package-directory (package) + "Get the directory PACKAGE is installed to. + +Return the absolute path of the installation directory of +PACKAGE, or nil, if PACKAGE is not installed." + (cond + ((fboundp 'package-desc-dir) + (package-desc-dir (epl-package-description package))) + ((fboundp 'package--dir) + (package--dir (symbol-name (epl-package-name package)) + (epl-package-version-string package))) + (:else (error "Cannot get package directory from %S" package)))) + +(defun epl-package-->= (pkg1 pkg2) + "Determine whether PKG1 is before PKG2 by version." + (not (version-list-< (epl-package-version pkg1) + (epl-package-version pkg2)))) + +(defun epl-package--from-package-desc (package-desc) + "Create an `epl-package' from a PACKAGE-DESC. + +PACKAGE-DESC is a `package-desc' object, from recent package.el +variants." + (if (and (fboundp 'package-desc-name) + (epl--package-desc-p package-desc)) + (epl-package-create :name (package-desc-name package-desc) + :description package-desc) + (signal 'wrong-type-argument (list 'epl--package-desc-p package-desc)))) + +(defun epl-package--parse-info (info) + "Parse a package.el INFO." + (if (epl--package-desc-p info) + (epl-package--from-package-desc info) + ;; For legacy package.el, info is a vector [NAME REQUIRES DESCRIPTION + ;; VERSION COMMENTARY]. We need to re-shape this vector into the + ;; `package-alist' format [VERSION REQUIRES DESCRIPTION] to attach it to the + ;; new `epl-package'. + (let ((name (intern (aref info 0))) + (info (vector (aref info 3) (aref info 1) (aref info 2)))) + (epl-package-create :name name :description info)))) + +(defun epl-package-from-buffer (&optional buffer) + "Create an `epl-package' object from BUFFER. + +BUFFER defaults to the current buffer. + +Signal `epl-invalid-package' if the buffer does not contain a +valid package file." + (let ((info (with-current-buffer (or buffer (current-buffer)) + (condition-case err + (package-buffer-info) + (error (signal 'epl-invalid-package (cdr err))))))) + (epl-package--parse-info info))) + +(defun epl-package-from-lisp-file (file-name) + "Parse the package headers the file at FILE-NAME. + +Return an `epl-package' object with the header metadata." + (with-temp-buffer + (insert-file-contents file-name) + (condition-case err + (epl-package-from-buffer (current-buffer)) + ;; Attach file names to invalid package errors + (epl-invalid-package + (signal 'epl-invalid-package-file (cons file-name (cdr err)))) + ;; Forward other errors + (error (signal (car err) (cdr err)))))) + +(defun epl-package-from-tar-file (file-name) + "Parse the package tarball at FILE-NAME. + +Return a `epl-package' object with the meta data of the tarball +package in FILE-NAME." + (condition-case nil + ;; In legacy package.el, `package-tar-file-info' takes the name of the tar + ;; file to parse as argument. In modern package.el, it has no arguments + ;; and works on the current buffer. Hence, we just try to call the legacy + ;; version, and if that fails because of a mismatch between formal and + ;; actual arguments, we use the modern approach. To avoid spurious + ;; signature warnings by the byte compiler, we suppress warnings when + ;; calling the function. + (epl-package--parse-info (with-no-warnings + (package-tar-file-info file-name))) + (wrong-number-of-arguments + (with-temp-buffer + (insert-file-contents-literally file-name) + ;; Switch to `tar-mode' to enable extraction of the file. Modern + ;; `package-tar-file-info' relies on `tar-mode', and signals an error if + ;; called in a buffer with a different mode. + (tar-mode) + (epl-package--parse-info (with-no-warnings + (package-tar-file-info))))))) + +(defun epl-package-from-file (file-name) + "Parse the package at FILE-NAME. + +Return an `epl-package' object with the meta data of the package +at FILE-NAME." + (if (string-match-p (rx ".tar" string-end) file-name) + (epl-package-from-tar-file file-name) + (epl-package-from-lisp-file file-name))) + +(defun epl-package--parse-descriptor-requirement (requirement) + "Parse a REQUIREMENT in a package descriptor." + ;; This function is only called on legacy package.el. On package-desc + ;; package.el, we just let package.el do the work. + (cl-destructuring-bind (name version-string) requirement + (list name (version-to-list version-string)))) + +(defun epl-package-from-descriptor-file (descriptor-file) + "Load a `epl-package' from a package DESCRIPTOR-FILE. + +A package descriptor is a file defining a new package. Its name +typically ends with -pkg.el." + (with-temp-buffer + (insert-file-contents descriptor-file) + (goto-char (point-min)) + (let ((sexp (read (current-buffer)))) + (unless (eq (car sexp) 'define-package) + (error "%S is no valid package descriptor" descriptor-file)) + (if (and (fboundp 'package-desc-from-define) + (fboundp 'package-desc-name)) + ;; In Emacs snapshot, we can conveniently call a function to parse the + ;; descriptor + (let ((desc (apply #'package-desc-from-define (cdr sexp)))) + (epl-package-create :name (package-desc-name desc) + :description desc)) + ;; In legacy package.el, we must manually deconstruct the descriptor, + ;; because the load function has eval's the descriptor and has a lot of + ;; global side-effects. + (cl-destructuring-bind + (name version-string summary requirements) (cdr sexp) + (epl-package-create + :name (intern name) + :description + (vector (version-to-list version-string) + (mapcar #'epl-package--parse-descriptor-requirement + ;; Strip the leading `quote' from the package list + (cadr requirements)) + summary))))))) + + +;;; Package database access +(defun epl-package-installed-p (package &optional min-version) + "Determine whether a PACKAGE, of MIN-VERSION or newer, is installed. + +PACKAGE is either a package name as symbol, or a package object. +When a explicit MIN-VERSION is provided it overwrites the version of the PACKAGE object." + (let ((name (if (epl-package-p package) + (epl-package-name package) + package)) + (min-version (or min-version (and (epl-package-p package) + (epl-package-version package))))) + (package-installed-p name min-version))) + +(defun epl--parse-built-in-entry (entry) + "Parse an ENTRY from the list of built-in packages. + +Return the corresponding `epl-package' object." + (if (fboundp 'package--from-builtin) + ;; In package-desc package.el, convert the built-in package to a + ;; `package-desc' and convert that to an `epl-package' + (epl-package--from-package-desc (package--from-builtin entry)) + (epl-package-create :name (car entry) :description (cdr entry)))) + +(defun epl-built-in-packages () + "Get all built-in packages. + +Return a list of `epl-package' objects." + ;; This looks mighty strange, but it's the only way to force package.el to + ;; build the list of built-in packages. Without this, `package--builtins' + ;; might be empty. + (package-built-in-p 'foo) + (mapcar #'epl--parse-built-in-entry package--builtins)) + +(defun epl-find-built-in-package (name) + "Find a built-in package with NAME. + +NAME is a package name, as symbol. + +Return the built-in package as `epl-package' object, or nil if +there is no built-in package with NAME." + (when (package-built-in-p name) + ;; We must call `package-built-in-p' *before* inspecting + ;; `package--builtins', because otherwise `package--builtins' might be + ;; empty. + (epl--parse-built-in-entry (assq name package--builtins)))) + +(defun epl-package-outdated-p (package) + "Determine whether a PACKAGE is outdated. + +A package is outdated, if there is an available package with a +higher version. + +PACKAGE is either a package name as symbol, or a package object. +In the former case, test the installed or built-in package with +the highest version number, in the later case, test the package +object itself. + +Return t, if the package is outdated, or nil otherwise." + (let* ((package (if (epl-package-p package) + package + (or (car (epl-find-installed-packages package)) + (epl-find-built-in-package package)))) + (available (car (epl-find-available-packages + (epl-package-name package))))) + (and package available (version-list-< (epl-package-version package) + (epl-package-version available))))) + +(defun epl--parse-package-list-entry (entry) + "Parse a list of packages from ENTRY. + +ENTRY is a single entry in a package list, e.g. `package-alist', +`package-archive-contents', etc. Typically it is a cons cell, +but the exact format varies between package.el versions. This +function tries to parse all known variants. + +Return a list of `epl-package' objects parsed from ENTRY." + (let ((descriptions (cdr entry))) + (cond + ((listp descriptions) + (sort (mapcar #'epl-package--from-package-desc descriptions) + #'epl-package-->=)) + ;; Legacy package.el has just a single package in an entry, which is a + ;; standard description vector + ((vectorp descriptions) + (list (epl-package-create :name (car entry) + :description descriptions))) + (:else (error "Cannot parse entry %S" entry))))) + +(defun epl-installed-packages () + "Get all installed packages. + +Return a list of package objects." + (apply #'append (mapcar #'epl--parse-package-list-entry package-alist))) + +(defsubst epl--filter-outdated-packages (packages) + "Filter outdated packages from PACKAGES." + (let (res) + (dolist (package packages) + (when (epl-package-outdated-p package) + (push package res))) + (nreverse res))) + +(defun epl-outdated-packages () + "Get all outdated packages, as in `epl-package-outdated-p'. + +Return a list of package objects." + (epl--filter-outdated-packages (epl-installed-packages))) + +(defsubst epl--find-package-in-list (name list) + "Find a package by NAME in a package LIST. + +Return a list of corresponding `epl-package' objects." + (let ((entry (assq name list))) + (when entry + (epl--parse-package-list-entry entry)))) + +(defun epl-find-installed-package (name) + "Find the latest installed package by NAME. + +NAME is a package name, as symbol. + +Return the installed package with the highest version number as +`epl-package' object, or nil, if no package with NAME is +installed." + (car (epl-find-installed-packages name))) +(make-obsolete 'epl-find-installed-package 'epl-find-installed-packages "0.7") + +(defun epl-find-installed-packages (name) + "Find all installed packages by NAME. + +NAME is a package name, as symbol. + +Return a list of all installed packages with NAME, sorted by +version number in descending order. Return nil, if there are no +packages with NAME." + (epl--find-package-in-list name package-alist)) + +(defun epl-available-packages () + "Get all packages available for installation. + +Return a list of package objects." + (apply #'append (mapcar #'epl--parse-package-list-entry + package-archive-contents))) + +(defun epl-find-available-packages (name) + "Find available packages for NAME. + +NAME is a package name, as symbol. + +Return a list of available packages for NAME, sorted by version +number in descending order. Return nil, if there are no packages +for NAME." + (epl--find-package-in-list name package-archive-contents)) + +(cl-defstruct (epl-upgrade + (:constructor epl-upgrade-create)) + "Structure describing an upgradable package. +Slots: + +`installed' The installed package + +`available' The package available for installation." + installed + available) + +(defun epl-find-upgrades (&optional packages) + "Find all upgradable PACKAGES. + +PACKAGES is a list of package objects to upgrade, defaulting to +all installed packages. + +Return a list of `epl-upgrade' objects describing all upgradable +packages." + (let ((packages (or packages (epl-installed-packages))) + upgrades) + (dolist (pkg packages) + (let* ((version (epl-package-version pkg)) + (name (epl-package-name pkg)) + ;; Find the latest available package for NAME + (available-pkg (car (epl-find-available-packages name))) + (available-version (when available-pkg + (epl-package-version available-pkg)))) + (when (and available-version (version-list-< version available-version)) + (push (epl-upgrade-create :installed pkg + :available available-pkg) + upgrades)))) + (nreverse upgrades))) + +(defalias 'epl-built-in-p 'package-built-in-p) + + +;;; Package operations + +(defun epl-install-file (file) + "Install a package from FILE, like `package-install-file'." + (interactive (advice-eval-interactive-spec + (cadr (interactive-form #'package-install-file)))) + (apply #'package-install-file (list file)) + (let ((package (epl-package-from-file file))) + (unless (epl-package--package-desc-p package) + (epl--kill-autoload-buffer package)))) + +(defun epl--kill-autoload-buffer (package) + "Kill the buffer associated with autoloads for PACKAGE." + (let* ((auto-name (format "%s-autoloads.el" (epl-package-name package))) + (generated-autoload-file (expand-file-name auto-name (epl-package-directory package))) + (buf (find-buffer-visiting generated-autoload-file))) + (when buf (kill-buffer buf)))) + +(defun epl-package-install (package &optional force) + "Install a PACKAGE. + +PACKAGE is a `epl-package' object. If FORCE is given and +non-nil, install PACKAGE, even if it is already installed." + (when (or force (not (epl-package-installed-p package))) + (if (epl-package--package-desc-p package) + (package-install (epl-package-description package)) + ;; The legacy API installs by name. We have no control over versioning, + ;; etc. + (package-install (epl-package-name package)) + (epl--kill-autoload-buffer package)))) + +(defun epl-package-delete (package) + "Delete a PACKAGE. + +PACKAGE is a `epl-package' object to delete." + ;; package-delete allows for packages being trashed instead of fully deleted. + ;; Let's prevent his silly behavior + (let ((delete-by-moving-to-trash nil)) + ;; The byte compiler will warn us that we are calling `package-delete' with + ;; the wrong number of arguments, since it can't infer that we guarantee to + ;; always call the correct version. Thus we suppress all warnings when + ;; calling `package-delete'. I wish there was a more granular way to + ;; disable just that specific warning, but it is what it is. + (if (epl-package--package-desc-p package) + (with-no-warnings + (package-delete (epl-package-description package))) + ;; The legacy API deletes by name (as string!) and version instead by + ;; descriptor. Hence `package-delete' takes two arguments. For some + ;; insane reason, the arguments are strings here! + (let ((name (symbol-name (epl-package-name package))) + (version (epl-package-version-string package))) + (with-no-warnings + (package-delete name version)) + ;; Legacy package.el does not remove the deleted package + ;; from the `package-alist', so we do it manually here. + (let ((pkg (assq (epl-package-name package) package-alist))) + (when pkg + (setq package-alist (delq pkg package-alist)))))))) + +(defun epl-upgrade (&optional packages preserve-obsolete) + "Upgrade PACKAGES. + +PACKAGES is a list of package objects to upgrade, defaulting to +all installed packages. + +The old versions of the updated packages are deleted, unless +PRESERVE-OBSOLETE is non-nil. + +Return a list of all performed upgrades, as a list of +`epl-upgrade' objects." + (let ((upgrades (epl-find-upgrades packages))) + (dolist (upgrade upgrades) + (epl-package-install (epl-upgrade-available upgrade) 'force) + (unless preserve-obsolete + (epl-package-delete (epl-upgrade-installed upgrade)))) + upgrades)) + +(provide 'epl) + +;;; epl.el ends here |