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;;; km-shell.el --- Shell-related extensions
;; Copyright Kyle Meyer <kyle@kyleam.com>
;; Author: Kyle Meyer <kyle@kyleam.com>
;; URL: https://git.kyleam.com/emacs.d
;; 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/>.
;;; Code:
(require 'comint)
(require 'term)
(defvar km/terminal "urxvt")
;;;###autoload
(defun km/open-external-terminal ()
(interactive)
(start-process "ext-term" nil km/terminal))
;;;###autoload
(defun km/zsh-ansi-term (&optional directory name)
"Open an ansi-term buffer running ZSH in DIRECTORY.
If a terminal for DIRECTORY already exists, switch to that
buffer. If the current buffer is a terminal for DIRECTORY,
create an additional terminal.
By default, DIRECTORY is `default-directory'.
With a numeric prefix argument 0, prompt the user with existing
ZSH terminal directories.
With a C-u prefix argument, set DIRECTORY to the user home
directory.
With any other non-nil value, prompt for a directory.
If NAME is non-nil, use *NAME* for the buffer name instead of
*zsh: DIRECTORY*. If that buffer already exists, it will be
grabbed regardless of whether its default-directory matches
DIRECTORY."
(interactive (km/zsh-ansi-term--args))
(let* ((dir (abbreviate-file-name directory))
(name (or name (concat "zsh: " dir)))
(full-name (concat "*" name "*"))
(default-directory dir))
(unless (and (not (string= (km/zsh-ansi-term-directory) dir))
(get-buffer full-name))
(cl-letf (((symbol-function 'switch-to-buffer)
(lambda (&rest _) nil)))
(ansi-term "zsh" name)))
(pop-to-buffer-same-window full-name)
(comint-goto-process-mark)))
;;;###autoload
(defun km/zsh-toggle-ansi-term-home (&optional other-window)
(interactive "P")
(if (string= "*zsh*" (buffer-name))
(bury-buffer)
(let ((display-buffer-overriding-action
(and other-window '(nil (inhibit-same-window . t)))))
(km/zsh-ansi-term "~/" "zsh"))))
;;;###autoload
(defun km/zsh-ansi-term-other-window (&optional directory)
(interactive (km/zsh-ansi-term--args))
(let ((display-buffer-overriding-action
'(nil (inhibit-same-window . t))))
(km/zsh-ansi-term directory)))
(defun km/zsh-ansi-term--args ()
(list (cond
((not current-prefix-arg)
default-directory)
((= (prefix-numeric-value current-prefix-arg) 4)
"~/")
((= (prefix-numeric-value current-prefix-arg) 0)
(let ((dirs (km/zsh-ansi-term-current-directories)))
(cl-case (length dirs)
(0 (user-error "No ZSH buffers found"))
(1 (car dirs))
(t (completing-read "Directory: " dirs
nil nil nil nil (car dirs))))))
(t
(read-directory-name "Directory: ")))))
(defun km/zsh-ansi-term-directory (&optional buffer)
"Return directory name for ZSH terminal in BUFFER.
BUFFER defaults to current buffer."
(with-current-buffer (or buffer (current-buffer))
(let ((bname (buffer-name)))
(and (derived-mode-p 'term-mode)
(string-match "^\\*zsh: \\(.*\\)\\*\\(<[0-9]+>\\)*$"
bname)
(match-string 1 bname)))))
(defun km/zsh-ansi-term-current-directories ()
(delete-dups
(delq nil (mapcar #'km/zsh-ansi-term-directory (buffer-list)))))
(provide 'km-shell)
;;; km-shell.el ends here
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