mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-27 07:37:33 +00:00
5badc81c1c
Run admin/update-copyright.
351 lines
14 KiB
EmacsLisp
351 lines
14 KiB
EmacsLisp
;;; em-term.el --- running visual commands -*- lexical-binding:t -*-
|
|
|
|
;; Copyright (C) 1999-2017 Free Software Foundation, Inc.
|
|
|
|
;; Author: John Wiegley <johnw@gnu.org>
|
|
|
|
;; This file is part of GNU Emacs.
|
|
|
|
;; 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 of the License, 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. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
;;; Commentary:
|
|
|
|
;; At the moment, eshell is stream-based in its interactive input and
|
|
;; output. This means that full-screen commands, such as "vi" or
|
|
;; "lynx", will not display correctly. These are therefore thought of
|
|
;; as "visual" programs. In order to run these programs under Emacs,
|
|
;; Eshell uses the term.el package, and invokes them in a separate
|
|
;; buffer, giving the illusion that Eshell itself is allowing these
|
|
;; visual processes to execute.
|
|
|
|
;;; Code:
|
|
|
|
(require 'cl-lib)
|
|
(require 'esh-util)
|
|
(require 'esh-ext)
|
|
(eval-when-compile (require 'eshell))
|
|
(require 'term)
|
|
|
|
;;;###autoload
|
|
(progn
|
|
(defgroup eshell-term nil
|
|
"This module causes visual commands (e.g., `vi') to be executed by
|
|
the `term' package, which comes with Emacs. This package handles most
|
|
of the ANSI control codes, allowing curses-based applications to run
|
|
within an Emacs window. The variable `eshell-visual-commands' defines
|
|
which commands are considered visual in nature."
|
|
:tag "Running visual commands"
|
|
:group 'eshell-module))
|
|
|
|
;;; User Variables:
|
|
|
|
(defcustom eshell-term-load-hook nil
|
|
"A list of functions to call when loading `eshell-term'."
|
|
:version "24.1" ; removed eshell-term-initialize
|
|
:type 'hook
|
|
:group 'eshell-term)
|
|
|
|
(defcustom eshell-visual-commands
|
|
'("vi" ; what is going on??
|
|
"screen" "top" ; ok, a valid program...
|
|
"less" "more" ; M-x view-file
|
|
"lynx" "ncftp" ; w3.el, ange-ftp
|
|
"pine" "tin" "trn" "elm") ; GNUS!!
|
|
"A list of commands that present their output in a visual fashion.
|
|
|
|
Commands listed here are run in a term buffer.
|
|
|
|
See also `eshell-visual-subcommands' and `eshell-visual-options'."
|
|
:type '(repeat string)
|
|
:group 'eshell-term)
|
|
|
|
(defcustom eshell-visual-subcommands
|
|
nil
|
|
"An alist of subcommands that present their output in a visual fashion.
|
|
|
|
An alist of the form
|
|
|
|
((COMMAND1 SUBCOMMAND1 SUBCOMMAND2...)
|
|
(COMMAND2 SUBCOMMAND1 ...))
|
|
|
|
of commands with subcommands that present their output in a
|
|
visual fashion. A likely entry is
|
|
|
|
(\"git\" \"log\" \"diff\" \"show\")
|
|
|
|
because git shows logs and diffs using a pager by default.
|
|
|
|
See also `eshell-visual-commands' and `eshell-visual-options'."
|
|
:type '(repeat (cons (string :tag "Command")
|
|
(repeat (string :tag "Subcommand"))))
|
|
:version "24.4"
|
|
:group 'eshell-term)
|
|
|
|
(defcustom eshell-visual-options
|
|
nil
|
|
"An alist of the form
|
|
|
|
((COMMAND1 OPTION1 OPTION2...)
|
|
(COMMAND2 OPTION1 ...))
|
|
|
|
of commands with options that present their output in a visual
|
|
fashion. For example, a sensible entry would be
|
|
|
|
(\"git\" \"--help\" \"--paginate\")
|
|
|
|
because \"git <command> --help\" shows the command's
|
|
documentation with a pager and \"git --paginate <command>\"
|
|
always uses a pager for output.
|
|
|
|
See also `eshell-visual-commands' and `eshell-visual-subcommands'."
|
|
:type '(repeat (cons (string :tag "Command")
|
|
(repeat (string :tag "Option"))))
|
|
:version "24.4"
|
|
:group 'eshell-term)
|
|
|
|
;; If you change this from term-term-name, you need to ensure that the
|
|
;; value you choose exists in the system's terminfo database. (Bug#12485)
|
|
(defcustom eshell-term-name term-term-name
|
|
"Name to use for the TERM variable when running visual commands.
|
|
See `term-term-name' in term.el for more information on how this is
|
|
used."
|
|
:version "24.3" ; eterm -> term-term-name = eterm-color
|
|
:type 'string
|
|
:group 'eshell-term)
|
|
|
|
(defcustom eshell-escape-control-x t
|
|
"If non-nil, allow <C-x> to be handled by Emacs key in visual buffers.
|
|
See the variables `eshell-visual-commands',
|
|
`eshell-visual-subcommands', and `eshell-visual-options'. If
|
|
this variable is set to nil, <C-x> will send that control
|
|
character to the invoked process."
|
|
:type 'boolean
|
|
:group 'eshell-term)
|
|
|
|
(defcustom eshell-destroy-buffer-when-process-dies nil
|
|
"If non-nil, term buffers are destroyed after their processes die.
|
|
WARNING: Setting this to non-nil may result in unexpected
|
|
behavior for short-lived processes, see bug#18108."
|
|
:version "25.1"
|
|
:type 'boolean
|
|
:group 'eshell-term)
|
|
|
|
;;; Internal Variables:
|
|
|
|
(defvar eshell-parent-buffer)
|
|
|
|
;;; Functions:
|
|
|
|
(defun eshell-term-initialize ()
|
|
"Initialize the `term' interface code."
|
|
(make-local-variable 'eshell-interpreter-alist)
|
|
(setq eshell-interpreter-alist
|
|
(cons (cons #'eshell-visual-command-p
|
|
'eshell-exec-visual)
|
|
eshell-interpreter-alist)))
|
|
|
|
(defun eshell-visual-command-p (command args)
|
|
"Returns non-nil when given a visual command.
|
|
If either COMMAND or a subcommand in ARGS (e.g. git log) is a
|
|
visual command, returns non-nil."
|
|
(let ((command (file-name-nondirectory command)))
|
|
(and (eshell-interactive-output-p)
|
|
(or (member command eshell-visual-commands)
|
|
(member (car args)
|
|
(cdr (assoc command eshell-visual-subcommands)))
|
|
(cl-intersection args
|
|
(cdr (assoc command eshell-visual-options))
|
|
:test 'string=)))))
|
|
|
|
(defun eshell-exec-visual (&rest args)
|
|
"Run the specified PROGRAM in a terminal emulation buffer.
|
|
ARGS are passed to the program. At the moment, no piping of input is
|
|
allowed."
|
|
(let* (eshell-interpreter-alist
|
|
(interp (eshell-find-interpreter (car args) (cdr args)))
|
|
(program (car interp))
|
|
(args (eshell-flatten-list
|
|
(eshell-stringify-list (append (cdr interp)
|
|
(cdr args)))))
|
|
(term-buf
|
|
(generate-new-buffer
|
|
(concat "*" (file-name-nondirectory program) "*")))
|
|
(eshell-buf (current-buffer)))
|
|
(save-current-buffer
|
|
(switch-to-buffer term-buf)
|
|
(term-mode)
|
|
(set (make-local-variable 'term-term-name) eshell-term-name)
|
|
(make-local-variable 'eshell-parent-buffer)
|
|
(setq eshell-parent-buffer eshell-buf)
|
|
(term-exec term-buf program program nil args)
|
|
(let ((proc (get-buffer-process term-buf)))
|
|
(if (and proc (eq 'run (process-status proc)))
|
|
(set-process-sentinel proc 'eshell-term-sentinel)
|
|
(error "Failed to invoke visual command")))
|
|
(term-char-mode)
|
|
(if eshell-escape-control-x
|
|
(term-set-escape-char ?\C-x))))
|
|
nil)
|
|
|
|
;; Process sentinels receive two arguments.
|
|
(defun eshell-term-sentinel (proc msg)
|
|
"Clean up the buffer visiting PROC.
|
|
If `eshell-destroy-buffer-when-process-dies' is non-nil, destroy
|
|
the buffer."
|
|
(term-sentinel proc msg) ;; First call the normal term sentinel.
|
|
(when eshell-destroy-buffer-when-process-dies
|
|
(let ((proc-buf (process-buffer proc)))
|
|
(when (and proc-buf (buffer-live-p proc-buf)
|
|
(not (eq 'run (process-status proc)))
|
|
(= (process-exit-status proc) 0))
|
|
(if (eq (current-buffer) proc-buf)
|
|
(let ((buf (and (boundp 'eshell-parent-buffer)
|
|
eshell-parent-buffer
|
|
(buffer-live-p eshell-parent-buffer)
|
|
eshell-parent-buffer)))
|
|
(if buf
|
|
(switch-to-buffer buf))))
|
|
(kill-buffer proc-buf)))))
|
|
|
|
;; jww (1999-09-17): The code below will allow Eshell to send input
|
|
;; characters directly to the currently running interactive process.
|
|
;; However, since this would introduce other problems that would need
|
|
;; solutions, I'm going to let it wait until after 2.1.
|
|
|
|
; (defvar eshell-term-raw-map nil
|
|
; "Keyboard map for sending characters directly to the inferior process.")
|
|
; (defvar eshell-term-escape-char nil
|
|
; "Escape character for char-sub-mode of term mode.
|
|
; Do not change it directly; use term-set-escape-char instead.")
|
|
; (defvar eshell-term-raw-escape-map nil)
|
|
|
|
; (defun eshell-term-send-raw-string (chars)
|
|
; (goto-char eshell-last-output-end)
|
|
; (process-send-string (eshell-interactive-process) chars))
|
|
|
|
; (defun eshell-term-send-raw ()
|
|
; "Send the last character typed through the terminal-emulator
|
|
; without any interpretation."
|
|
; (interactive)
|
|
; ;; Convert `return' to C-m, etc.
|
|
; (if (and (symbolp last-input-event)
|
|
; (get last-input-event 'ascii-character))
|
|
; (setq last-input-event (get last-input-event 'ascii-character)))
|
|
; (eshell-term-send-raw-string (make-string 1 last-input-event)))
|
|
|
|
; (defun eshell-term-send-raw-meta ()
|
|
; (interactive)
|
|
; (if (symbolp last-input-event)
|
|
; ;; Convert `return' to C-m, etc.
|
|
; (let ((tmp (get last-input-event 'event-symbol-elements)))
|
|
; (if tmp
|
|
; (setq last-input-event (car tmp)))
|
|
; (if (symbolp last-input-event)
|
|
; (progn
|
|
; (setq tmp (get last-input-event 'ascii-character))
|
|
; (if tmp (setq last-input-event tmp))))))
|
|
; (eshell-term-send-raw-string (if (and (numberp last-input-event)
|
|
; (> last-input-event 127)
|
|
; (< last-input-event 256))
|
|
; (make-string 1 last-input-event)
|
|
; (format "\e%c" last-input-event))))
|
|
|
|
; (defun eshell-term-mouse-paste (click arg)
|
|
; "Insert the last stretch of killed text at the position clicked on."
|
|
; (interactive "e\nP")
|
|
; (if (boundp 'xemacs-logo)
|
|
; (eshell-term-send-raw-string
|
|
; (or (condition-case () (x-get-selection) (error ()))
|
|
; (error "No selection available")))
|
|
; ;; Give temporary modes such as isearch a chance to turn off.
|
|
; (run-hooks 'mouse-leave-buffer-hook)
|
|
; (setq this-command 'yank)
|
|
; (eshell-term-send-raw-string
|
|
; (current-kill (cond ((listp arg) 0)
|
|
; ((eq arg '-) -1)
|
|
; (t (1- arg)))))))
|
|
|
|
; ;; Which would be better: "\e[A" or "\eOA"? readline accepts either.
|
|
; ;; For my configuration it's definitely better \eOA but YMMV. -mm
|
|
; ;; For example: vi works with \eOA while elm wants \e[A ...
|
|
; (defun eshell-term-send-up () (interactive) (eshell-term-send-raw-string "\eOA"))
|
|
; (defun eshell-term-send-down () (interactive) (eshell-term-send-raw-string "\eOB"))
|
|
; (defun eshell-term-send-right () (interactive) (eshell-term-send-raw-string "\eOC"))
|
|
; (defun eshell-term-send-left () (interactive) (eshell-term-send-raw-string "\eOD"))
|
|
; (defun eshell-term-send-home () (interactive) (eshell-term-send-raw-string "\e[1~"))
|
|
; (defun eshell-term-send-end () (interactive) (eshell-term-send-raw-string "\e[4~"))
|
|
; (defun eshell-term-send-prior () (interactive) (eshell-term-send-raw-string "\e[5~"))
|
|
; (defun eshell-term-send-next () (interactive) (eshell-term-send-raw-string "\e[6~"))
|
|
; (defun eshell-term-send-del () (interactive) (eshell-term-send-raw-string "\C-?"))
|
|
; (defun eshell-term-send-backspace () (interactive) (eshell-term-send-raw-string "\C-H"))
|
|
|
|
; (defun eshell-term-set-escape-char (c)
|
|
; "Change term-escape-char and keymaps that depend on it."
|
|
; (if eshell-term-escape-char
|
|
; (define-key eshell-term-raw-map eshell-term-escape-char 'eshell-term-send-raw))
|
|
; (setq c (make-string 1 c))
|
|
; (define-key eshell-term-raw-map c eshell-term-raw-escape-map)
|
|
; ;; Define standard bindings in eshell-term-raw-escape-map
|
|
; (define-key eshell-term-raw-escape-map "\C-x"
|
|
; (lookup-key (current-global-map) "\C-x"))
|
|
; (define-key eshell-term-raw-escape-map "\C-v"
|
|
; (lookup-key (current-global-map) "\C-v"))
|
|
; (define-key eshell-term-raw-escape-map "\C-u"
|
|
; (lookup-key (current-global-map) "\C-u"))
|
|
; (define-key eshell-term-raw-escape-map c 'eshell-term-send-raw))
|
|
|
|
; (defun eshell-term-char-mode ()
|
|
; "Switch to char (\"raw\") sub-mode of term mode.
|
|
; Each character you type is sent directly to the inferior without
|
|
; intervention from Emacs, except for the escape character (usually C-c)."
|
|
; (interactive)
|
|
; (if (not eshell-term-raw-map)
|
|
; (let* ((map (make-keymap))
|
|
; (esc-map (make-keymap))
|
|
; (i 0))
|
|
; (while (< i 128)
|
|
; (define-key map (make-string 1 i) 'eshell-term-send-raw)
|
|
; (define-key esc-map (make-string 1 i) 'eshell-term-send-raw-meta)
|
|
; (setq i (1+ i)))
|
|
; (define-key map "\e" esc-map)
|
|
; (setq eshell-term-raw-map map)
|
|
; (setq eshell-term-raw-escape-map
|
|
; (copy-keymap (lookup-key (current-global-map) "\C-x")))
|
|
; (if (boundp 'xemacs-logo)
|
|
; (define-key eshell-term-raw-map [button2] 'eshell-term-mouse-paste)
|
|
; (define-key eshell-term-raw-map [mouse-2] 'eshell-term-mouse-paste))
|
|
; (define-key eshell-term-raw-map [up] 'eshell-term-send-up)
|
|
; (define-key eshell-term-raw-map [down] 'eshell-term-send-down)
|
|
; (define-key eshell-term-raw-map [right] 'eshell-term-send-right)
|
|
; (define-key eshell-term-raw-map [left] 'eshell-term-send-left)
|
|
; (define-key eshell-term-raw-map [delete] 'eshell-term-send-del)
|
|
; (define-key eshell-term-raw-map [backspace] 'eshell-term-send-backspace)
|
|
; (define-key eshell-term-raw-map [home] 'eshell-term-send-home)
|
|
; (define-key eshell-term-raw-map [end] 'eshell-term-send-end)
|
|
; (define-key eshell-term-raw-map [prior] 'eshell-term-send-prior)
|
|
; (define-key eshell-term-raw-map [next] 'eshell-term-send-next)
|
|
; (eshell-term-set-escape-char ?\C-c))))
|
|
|
|
; (defun eshell-term-line-mode ()
|
|
; "Switch to line (\"cooked\") sub-mode of eshell-term mode."
|
|
; (use-local-map term-old-mode-map))
|
|
|
|
(provide 'em-term)
|
|
|
|
;; Local Variables:
|
|
;; generated-autoload-file: "esh-groups.el"
|
|
;; End:
|
|
|
|
;;; em-term.el ends here
|