2011-09-20 21:15:52 +08:00
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;;; el-get --- Manage the external elisp bits and pieces you depend upon
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;;
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;; Copyright (C) 2010-2011 Dimitri Fontaine
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;;
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;; Author: Dimitri Fontaine <dim@tapoueh.org>
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;; URL: http://www.emacswiki.org/emacs/el-get
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;; GIT: https://github.com/dimitri/el-get
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;; Licence: WTFPL, grab your copy here: http://sam.zoy.org/wtfpl/
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;;
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;; This file is NOT part of GNU Emacs.
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;;
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;; Install
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;; Please see the README.asciidoc file from the same distribution
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;;
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;; package status --- a plist saved on a file, using symbols
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;;
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;; it should be possible to use strings instead, but in my tests it failed
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;; miserably.
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;;
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2012-03-06 17:23:44 +08:00
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(require 'cl)
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2012-03-13 00:08:58 +08:00
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(require 'pp)
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2011-09-20 21:15:52 +08:00
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(require 'el-get-core)
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2012-03-08 01:47:04 +08:00
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(defun el-get-package-name (package-symbol)
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"Returns a package name as a string."
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(cond ((keywordp package-symbol)
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(substring (symbol-name package-symbol) 1))
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((symbolp package-symbol)
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(symbol-name package-symbol))
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((stringp package-symbol)
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package-symbol)
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(t (error "Unknown package: %s"))))
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(defun el-get-package-symbol (package)
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"Returns a package name as a non-keyword symbol"
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(cond ((keywordp package)
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(intern (substring (symbol-name package) 1)))
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((symbolp package)
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package)
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((stringp package) (intern package))
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(t (error "Unknown package: %s"))))
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(defun el-get-package-keyword (package-name)
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"Returns a package name as a keyword :package."
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(if (keywordp package-name)
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package-name
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(intern (format ":%s" package-name))))
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2012-03-12 04:57:35 +08:00
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(defun el-get-pp-status-alist-to-string (object)
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(with-temp-buffer
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(lisp-mode-variables nil)
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(set-syntax-table emacs-lisp-mode-syntax-table)
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(let ((print-escape-newlines pp-escape-newlines)
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(print-quoted t))
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(prin1 object (current-buffer)))
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(goto-char (point-min))
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2012-03-13 00:14:00 +08:00
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;; Each (apparently-infinite) loop constantly moves forward
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;; through the element it is processing (via `down-list`,
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;; `up-list`, and `forward-sexp` and finally throws a scan-error
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;; when it reaches the end of the element, which breaks out of the
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;; loop and is caught by `condition-case`.
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(condition-case err
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;; Descend into status list
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(progn
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(down-list 1)
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(while t
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;; Descend into recipe
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(down-list 2)
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;; Put a newline after each property value (except the
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;; last one)
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(condition-case err
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(while t
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;; We want to move forward by 2 sexps, but we also
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;; want to make sure that there's another sexp after
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;; point before inserting a newline. Thus we go
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;; forward 3 and then back 1.
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(forward-sexp 3)
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(backward-sexp 1)
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(delete-region (point) (progn (skip-chars-backward " \t\n") (point)))
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(insert ?\n))
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(scan-error nil))
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;; Exit from status entry for this package
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(up-list 2)))
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(scan-error nil))
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(pp-buffer)
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(goto-char (point-min))
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;; Make sure we didn't change the value. That would be bad.
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(assert (equal object (read (current-buffer))) nil
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"Pretty-printing status changes its value. Your pretty-printing function is messed up.")
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(buffer-string)))
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2012-03-06 01:51:33 +08:00
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(defun el-get-save-package-status (package status)
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"Save given package status"
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(let* ((package (el-get-as-symbol package))
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(recipe (el-get-package-def package))
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(package-status-alist
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(assq-delete-all package (el-get-read-status-file)))
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(new-package-status-alist
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(sort (append package-status-alist
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(list ; alist of (PACKAGE . PROPERTIES-LIST)
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(cons package (list 'status status 'recipe recipe))))
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(lambda (p1 p2)
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(string< (el-get-as-string (car p1))
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(el-get-as-string (car p2)))))))
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(with-temp-file el-get-status-file
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(insert (el-get-pp-status-alist-to-string new-package-status-alist)))
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2012-03-08 02:09:29 +08:00
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;; Return the new alist
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new-package-status-alist))
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2011-09-20 21:15:52 +08:00
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2012-03-06 01:51:33 +08:00
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(defun el-get-read-status-file ()
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"read `el-get-status-file' and return an alist of plist like:
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(PACKAGE . (status \"status\" recipe (:name ...)))"
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2012-03-08 02:09:29 +08:00
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(let ((ps
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(when (file-exists-p el-get-status-file)
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(car (with-temp-buffer
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(insert-file-contents-literally el-get-status-file)
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(read-from-string (buffer-string)))))))
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(if (consp (car ps)) ; check for an alist, new format
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ps
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;; convert to the new format, fetching recipes as we go
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(loop for (p s) on ps by 'cddr
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for x = (el-get-package-symbol p)
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when x
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collect (cons x (list 'status s
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'recipe (el-get-package-def x)))))))
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2012-03-06 01:51:33 +08:00
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(defun el-get-package-status-alist (&optional package-status-alist)
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"return an alist of (PACKAGE . STATUS)"
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(loop for (p . prop) in (or package-status-alist
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2012-03-06 16:30:49 +08:00
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(el-get-read-status-file))
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collect (cons p (plist-get prop 'status))))
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2012-03-09 02:28:22 +08:00
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(defun el-get-package-status-recipes (&optional package-status-alist)
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"return the list of recipes stored in the status file"
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(loop for (p . prop) in (or package-status-alist
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(el-get-read-status-file))
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collect (plist-get prop 'recipe)))
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2012-03-06 01:51:33 +08:00
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(defun el-get-read-package-status (package &optional package-status-alist)
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"return current status for PACKAGE"
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(let ((p-alist (or package-status-alist (el-get-read-status-file))))
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(plist-get (cdr (assq (el-get-as-symbol package) p-alist)) 'status)))
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2012-03-06 17:08:28 +08:00
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(define-obsolete-function-alias 'el-get-package-status 'el-get-read-package-status)
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2012-03-06 01:51:33 +08:00
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(defun el-get-read-package-status-recipe (package &optional package-status-alist)
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"return current status for PACKAGE"
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(let ((p-alist (or package-status-alist (el-get-read-status-file))))
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(plist-get (cdr (assq (el-get-as-symbol package) p-alist)) 'recipe)))
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2012-03-06 16:33:32 +08:00
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(defun el-get-filter-package-alist-with-status (package-status-alist &rest statuses)
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"Return package names that are currently in given status"
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2012-03-06 16:33:32 +08:00
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(loop for (p . prop) in package-status-alist
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for s = (plist-get prop 'status)
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when (member s statuses)
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collect (el-get-as-string p)))
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2012-03-06 16:33:32 +08:00
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(defun el-get-list-package-names-with-status (&rest statuses)
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"Return package names that are currently in given status"
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2012-03-06 16:33:32 +08:00
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(apply #'el-get-filter-package-alist-with-status
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(el-get-read-status-file)
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statuses))
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2012-03-06 16:33:32 +08:00
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(defun el-get-read-package-with-status (action &rest statuses)
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"Read a package name in given status"
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(completing-read (format "%s package: " action)
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(apply 'el-get-list-package-names-with-status statuses)))
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2012-03-06 16:33:32 +08:00
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(defun el-get-count-package-with-status (&rest statuses)
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"Return how many packages are currently in given status"
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(length (apply #'el-get-list-package-names-with-status statuses)))
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2012-03-06 16:33:32 +08:00
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(defun el-get-count-packages-with-status (packages &rest statuses)
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2011-09-23 03:48:11 +08:00
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"Return how many packages are currently in given status in PACKAGES"
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2012-03-06 17:23:44 +08:00
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(length (intersection
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(mapcar #'el-get-as-symbol (apply #'el-get-list-package-names-with-status statuses))
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(mapcar #'el-get-as-symbol packages))))
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(defun el-get-extra-packages (&rest packages)
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"Return installed or required packages that are not in given package list"
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(let ((packages
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;; &rest could contain both symbols and lists
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(loop for p in packages
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when (listp p) append (mapcar 'el-get-as-symbol p)
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else collect (el-get-as-symbol p))))
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(when packages
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2012-03-07 04:06:04 +08:00
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(loop for (p . prop) in (el-get-read-status-file)
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for s = (plist-get prop 'status)
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for x = (el-get-package-symbol p)
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unless (member x packages)
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unless (equal s "removed")
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collect (list x s)))))
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2012-03-09 02:28:22 +08:00
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(defmacro el-get-with-status-sources (&rest body)
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"Evaluate BODY with `el-get-sources' bound to recipes from status file."
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`(let ((el-get-sources (el-get-package-status-recipes)))
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(progn ,@body)))
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(put 'el-get-with-status-recipes 'lisp-indent-function
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(get 'progn 'lisp-indent-function))
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2011-09-20 21:15:52 +08:00
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(provide 'el-get-status)
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