299 lines
13 KiB
EmacsLisp
299 lines
13 KiB
EmacsLisp
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;;; helm-systemd.el --- helm's systemd interface -*- lexical-binding: t; -*-
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;; Copyright (C) 2016
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;; Author: <lompik@oriontabArch>
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;; Package-Version: 20160517.2333
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;; Package-X-Original-Version: 0.0.1
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;; Package-Requires: ((emacs "24.4") (helm "1.9.2") (with-editor "2.5.0"))
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;; Keywords: convenience
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;; This program is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;;
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;;; Code:
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(require 'cl-lib)
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(require 'helm)
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(require 'with-editor)
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(require 'subr-x)
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(defvar helm-systemd-command-types '("service" "timer" "mount" "target" "socket" "scope" "device"))
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(defvar helm-systemd-list-all nil)
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(defvar helm-systemd-list-not-loaded nil)
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(defvar helm-systemd-buffer-name "*Helm systemd log*")
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(defvar helm-systemd-status-mode-hook nil )
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(defconst helm-systemd-actions-list
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'(("print". "Printed")
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("restart". "Restarted")
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("stop" ."Stopped")
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("start". "Started")))
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(defvar helm-systemd-status-font-lock-keywords
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`(("\\(Loaded\\|Active\\|Status\\|Docs\\|Process\\|Main PID\\|Tasks\\|CGroup\\):" (1 'helm-bookmark-gnus) )
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("active (running)" 0 'hi-green)
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("inactive (dead)" 0 'helm-bookmark-info)
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("active (exited)" 0 'helm-bookmark-info)
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("[fF]ailed" 0 'diredp-executable-tag)
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("─\\([0-9]+\\)" (1 'helm-bookmark-info)) ; PIDs
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("[●🔜] .*" 0 'helm-buffer-file) ; command lines ●🔜
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"Default expressions to highlight in `helm systemd log'."))
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(define-derived-mode helm-systemd-status-mode fundamental-mode "Systemd-log"
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"Major mode for viewing systemd status logs.
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\\{helm-systemd-status-mode-map}"
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(setq-local font-lock-defaults '(helm-systemd-status-font-lock-keywords))
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(font-lock-mode t))
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(add-to-list 'auto-mode-alist `(, (concat (regexp-quote helm-systemd-buffer-name) "\\'") . helm-systemd-status-mode))
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(defun helm-systemd-command-line-option ()
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(concat "--no-pager --no-legend -t " (car helm-systemd-command-types) (if helm-systemd-list-all " --all")))
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(defvar helm-systemd-map
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(let ((map (make-sparse-keymap)))
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(set-keymap-parent map helm-map)
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(define-key map (kbd "<C-return>") 'helm-cr-empty-string)
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(define-key map (kbd "<M-RET>") 'helm-cr-empty-string)
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(define-key map (kbd "C-]") 'helm-systemd-next-type)
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(define-key map (kbd "C-[") 'helm-systemd-prev-type)
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(delq nil map))
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"Keymap for `helm-systemd'.")
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(defun helm-systemd-concatspace (word-list)
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"Concatenate list of string with spaces as separator"
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(mapconcat 'identity
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(delq nil word-list)
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" "))
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(defun helm-systemd-systemctl-command (&rest args)
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"Construct string with: 'systemctl default-args' ARGS"
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(helm-systemd-concatspace (push (concat "systemctl " (helm-systemd-command-line-option))
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args) ))
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(defun helm-systemd-get-canditates (sysd-options)
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"Return a list of systemd service unit"
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(let* ((result ())
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(leftcolumnwidth
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(number-to-string 25))
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(hash (make-hash-table
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:test 'equal))
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(sysd-lu (shell-command-to-string
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(helm-systemd-systemctl-command " list-units " sysd-options)))
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(sysd-lu (delete ""
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(split-string sysd-lu
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"\n"))))
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(mapc (lambda (line)
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(puthash (car (split-string line)) line hash))
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sysd-lu)
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(if helm-systemd-list-not-loaded
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(let* ((sysd-luf (shell-command-to-string
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(helm-systemd-systemctl-command " list-unit-files " sysd-options)))
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(sysd-luf (delete ""
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(split-string sysd-luf "\n"))))
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(mapc (lambda (line-luf)
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(let ((unit (car
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(split-string line-luf))))
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(unless (gethash unit hash nil)
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(puthash unit line-luf hash)))) sysd-luf)))
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(let ((maxunitlength
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(string-to-number leftcolumnwidth)))
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(maphash (lambda (unit descr)
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(setq maxunitlength
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(max maxunitlength (length unit)))) hash)
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(setq leftcolumnwidth
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(number-to-string maxunitlength)))
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(maphash (lambda (unit descr)
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(let* ((unit_misc
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(string-trim-left
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(substring descr (length unit) (length descr))))
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(formatted_output
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(format
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(concat "%-" leftcolumnwidth "s %s")
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unit unit_misc)))
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(push formatted_output result)) ) hash)
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result ))
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(defun helm-systemd-display (unit-command unit &optional isuser nodisplay)
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(with-current-buffer (get-buffer-create helm-systemd-buffer-name)
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(helm-systemd-status-mode)
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(let ((command
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(helm-systemd-systemctl-command (if isuser "--user") unit-command unit)))
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(insert "\n🔜 " command "\n")
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(if (or isuser (string= unit-command "status"))
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(insert (shell-command-to-string command))
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(with-temp-buffer
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(cd "/sudo::/")
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(setq command (shell-command-to-string (concat "sudo " command))))
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(insert command)
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)
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(insert "\n"))
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;; (propertise-sysd-buffer )
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(unless nodisplay
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(display-buffer (current-buffer)))))
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(defun helm-systemd-next-type ()
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(interactive)
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(setq helm-systemd-command-types
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(append (cdr helm-systemd-command-types)
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(list (car helm-systemd-command-types))))
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(with-helm-alive-p
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(helm-force-update )))
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(defun helm-systemd-prev-type ()
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(interactive)
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(setq helm-systemd-command-types
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(append (last helm-systemd-command-types)
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(remove (car (last helm-systemd-command-types))
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helm-systemd-command-types)))
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(with-helm-alive-p
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(helm-force-update )))
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(defun helm-system-persis-action (_line &optional isuser)
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"Show unit status"
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(let ((units (helm-marked-candidates)))
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(mapc (lambda (line)
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(let ((unit (car (split-string line))))
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(helm-systemd-display "status" unit isuser )))
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units)))
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(defun helm-systemd-transformer (candidates source)
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(let ((res candidates))
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(unless (string= (car helm-systemd-command-types) "device")
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(setq res (cl-loop for i in candidates
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for split = (split-string i)
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for unit = (car split)
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for loaded = (nth 1 split)
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for active = (nth 2 split)
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for running = (nth 3 split)
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for description = (if running (helm-systemd-concatspace (cl-subseq split 4)))
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collect (let ((line i))
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(unless (and unit loaded active running description)
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line)
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(if (and loaded (not (string= (car helm-systemd-command-types) "mount")))
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(let* ((isenabled
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(car
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(split-string
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(shell-command-to-string
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(helm-systemd-concatspace `("systemctl" "is-enabled "
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,(if (string-match "User"
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(cdr (assoc 'name source)))
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"--user")
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,unit))))))
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(propena (cond ((string= isenabled "enabled") 'helm-bookmark-info)
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((string= isenabled "static") 'helm-bookmark-gnus)
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(t 'helm-bookmark-gnus)))
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(isenabled (format "%8s" isenabled) ))
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(setq line (if active
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(replace-regexp-in-string loaded (concat (propertize isenabled 'face propena) " " loaded " ") line )
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(replace-regexp-in-string loaded (concat (propertize isenabled 'face propena) " ") line ))))) ;; list-units case
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(if (string= running "running")
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(setq line
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(replace-regexp-in-string running
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(propertize
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running
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'face
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'helm-ff-directory) line )))
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(if (string= running "exited")
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(setq line
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(replace-regexp-in-string running
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(propertize
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running
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'face
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'helm-bookmark-info) line )))
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(if (string= running "failed")
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(setq line
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(replace-regexp-in-string running
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(propertize
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running
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'face
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'diredp-executable-tag) line )))
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(if description
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(setq line
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(replace-regexp-in-string
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(regexp-quote description) (propertize
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description
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'face
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'helm-buffer-process) line t)))
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line ))))
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res))
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(defmacro helm-systemd-make-actions (sysd-verb isuser)
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`(lambda (_ignore)
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(mapc (lambda (candidate)
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(helm-systemd-display ,sysd-verb (car (split-string candidate)) ,isuser t)
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(message (concat
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(cdr (assoc ,sysd-verb helm-systemd-actions-list))
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" "
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(car (split-string candidate)))))
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(helm-marked-candidates))))
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(defun helm-systemd-build-source ()
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(helm-build-sync-source "systemd"
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:candidates (lambda ()
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(reverse (helm-systemd-get-canditates "") ))
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:action (helm-make-actions
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"Print" (helm-systemd-make-actions "status" nil)
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"Restart" (helm-systemd-make-actions "restart" nil)
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"Stop" (helm-systemd-make-actions "stop" nil)
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"Start" (helm-systemd-make-actions "start" nil))
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:persistent-action #'helm-system-persis-action
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:persistent-help "Show unit status"
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:keymap helm-systemd-map
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:filtered-candidate-transformer #'helm-systemd-transformer))
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(defun helm-systemd-build-source-user ()
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(helm-build-sync-source "Systemd User"
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:candidates (lambda ()
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(reverse (helm-systemd-get-canditates "--user")))
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:action (helm-make-actions
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"Print" (helm-systemd-make-actions "status" t)
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"Restart" (helm-systemd-make-actions "restart" t)
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"Stop" (helm-systemd-make-actions "stop" t)
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"Start" (helm-systemd-make-actions "start" nil)
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"Edit with Emacs" (lambda (candidate)
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(add-to-list 'with-editor-envvars "SYSTEMD_EDITOR" t)
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(with-editor-async-shell-command (concat "systemctl --user --full edit " (car (split-string candidate))) )))
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:persistent-action (lambda (line) (funcall #'helm-system-persis-action line t))
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:persistent-help "Show unit status"
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:keymap helm-systemd-map
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:filtered-candidate-transformer #'helm-systemd-transformer))
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;;;###autoload
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(defun helm-systemd ()
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(interactive)
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(helm
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:sources (mapcar (lambda (func)
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(funcall func))
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'(helm-systemd-build-source helm-systemd-build-source-user))
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:truncate-lines t
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:buffer
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(concat "*helm systemd*")) )
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(provide 'helm-systemd)
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;;; helm-systemd.el ends here
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