495 lines
20 KiB
EmacsLisp
495 lines
20 KiB
EmacsLisp
;;; helm-eshell.el --- pcomplete and eshell completion for helm. -*- lexical-binding: t -*-
|
||
|
||
;; Copyright (C) 2012 ~ 2023 Thierry Volpiatto
|
||
|
||
;; 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:
|
||
;;
|
||
;; Enable like this in .emacs:
|
||
;; (add-hook 'eshell-mode-hook
|
||
;; (lambda ()
|
||
;; (eshell-cmpl-initialize)
|
||
;; (define-key eshell-mode-map [remap eshell-pcomplete] 'helm-esh-pcomplete)
|
||
;; (define-key eshell-mode-map (kbd "M-s f") 'helm-eshell-prompts-all)))
|
||
;; (define-key eshell-mode-map (kbd "M-r") 'helm-eshell-history)))
|
||
|
||
|
||
;;; Code:
|
||
(require 'cl-lib)
|
||
(require 'helm)
|
||
(require 'helm-lib)
|
||
(require 'helm-help)
|
||
(require 'helm-elisp)
|
||
|
||
(declare-function eshell-read-aliases-list "em-alias")
|
||
(declare-function eshell-send-input "esh-mode" (&optional use-region queue-p no-newline))
|
||
(declare-function eshell-bol "esh-mode")
|
||
(declare-function eshell-parse-arguments "esh-arg" (beg end))
|
||
(declare-function eshell-backward-argument "esh-mode" (&optional arg))
|
||
(declare-function helm-quote-whitespace "helm-lib")
|
||
(declare-function eshell-skip-prompt "em-prompt")
|
||
(defvar eshell-special-chars-outside-quoting)
|
||
|
||
|
||
(defgroup helm-eshell nil
|
||
"Helm completion and history for Eshell."
|
||
:group 'helm)
|
||
|
||
|
||
(defcustom helm-eshell-fuzzy-match nil
|
||
"Enable fuzzy matching in `helm-esh-pcomplete' when non-nil."
|
||
:type 'boolean)
|
||
|
||
|
||
(defvar helm-eshell-history-map
|
||
(let ((map (make-sparse-keymap)))
|
||
(set-keymap-parent map helm-map)
|
||
(define-key map (kbd "M-p") #'helm-next-line)
|
||
map)
|
||
"Keymap for `helm-eshell-history'.")
|
||
|
||
(defvar helm-esh-completion-map
|
||
(let ((map (make-sparse-keymap)))
|
||
(set-keymap-parent map helm-map)
|
||
(define-key map (kbd "TAB") #'helm-next-line)
|
||
map)
|
||
"Keymap for `helm-esh-pcomplete'.")
|
||
|
||
(defvar helm-eshell--quit-flag nil)
|
||
|
||
|
||
;; Internal.
|
||
(defvar helm-ec-target "")
|
||
(defun helm-ec-insert (_candidate)
|
||
"Replace text at point with CANDIDATE.
|
||
The function that call this should set `helm-ec-target' to thing
|
||
at point."
|
||
(set (make-local-variable 'comint-file-name-quote-list)
|
||
eshell-special-chars-outside-quoting)
|
||
(let ((pt (point)))
|
||
(when (and helm-ec-target
|
||
(search-backward helm-ec-target nil t)
|
||
(string= (buffer-substring (point) pt) helm-ec-target))
|
||
(delete-region (point) pt)))
|
||
(when (string-match "\\`\\*" helm-ec-target) (insert "*"))
|
||
(let ((marked (helm-marked-candidates)))
|
||
(prog1 t ;; Makes helm returns t on action.
|
||
(insert
|
||
(mapconcat
|
||
(lambda (x)
|
||
(cond ((string-match "\\`~/" helm-ec-target)
|
||
;; Strip out the first escape char added by
|
||
;; `comint-quote-filename' before "~" (Bug#1803).
|
||
(substring (comint-quote-filename (abbreviate-file-name x)) 1))
|
||
((string-match "\\`/" helm-ec-target)
|
||
(comint-quote-filename x))
|
||
(t
|
||
(concat (and (string-match "\\`[.]/" helm-ec-target) "./")
|
||
(comint-quote-filename
|
||
(file-relative-name x))))))
|
||
marked " ")
|
||
(or (helm-aand (car (last marked))
|
||
(string-match-p "/\\'" it)
|
||
"")
|
||
" ")))))
|
||
|
||
(defun helm-esh-transformer (candidates _sources)
|
||
(cl-loop
|
||
for i in candidates
|
||
collect
|
||
(cond ((string-match "\\`~/?" helm-ec-target)
|
||
(abbreviate-file-name i))
|
||
((string-match "\\`/" helm-ec-target) i)
|
||
(t
|
||
(file-relative-name i)))
|
||
into lst
|
||
finally return (sort lst #'helm-generic-sort-fn)))
|
||
|
||
(defclass helm-esh-source (helm-source-sync)
|
||
((init :initform (lambda ()
|
||
(setq pcomplete-current-completions nil
|
||
pcomplete-last-completion-raw nil)
|
||
;; Eshell-command add this hook in all minibuffers
|
||
;; Remove it for the helm one. (Fixed in Emacs24)
|
||
(remove-hook 'minibuffer-setup-hook 'eshell-mode)))
|
||
(candidates :initform 'helm-esh-get-candidates)
|
||
;(nomark :initform t)
|
||
(persistent-action :initform 'ignore)
|
||
(nohighlight :initform t)
|
||
(filtered-candidate-transformer :initform #'helm-esh-transformer)
|
||
(action :initform 'helm-ec-insert))
|
||
"Helm class to define source for Eshell completion.")
|
||
|
||
(defun helm-esh-get-candidates ()
|
||
"Get candidates for Eshell completion using `pcomplete'."
|
||
(catch 'pcompleted
|
||
(with-helm-current-buffer
|
||
(let* ((pcomplete-stub)
|
||
pcomplete-seen pcomplete-norm-func
|
||
pcomplete-args pcomplete-last pcomplete-index
|
||
(pcomplete-autolist pcomplete-autolist)
|
||
(pcomplete-suffix-list pcomplete-suffix-list)
|
||
(table (pcomplete-completions))
|
||
(entry (or (try-completion helm-pattern
|
||
(pcomplete-entries))
|
||
helm-pattern)))
|
||
(cl-loop ;; expand entry too to be able to compare it with file-cand.
|
||
with exp-entry = (and (stringp entry)
|
||
(not (string= entry ""))
|
||
(file-name-as-directory
|
||
(expand-file-name entry default-directory)))
|
||
with comps = (all-completions pcomplete-stub table)
|
||
unless comps return (prog1 nil
|
||
;; Don't add final space when
|
||
;; there is no completion (Bug#1990).
|
||
(setq helm-eshell--quit-flag t)
|
||
(message "No completions of %s" pcomplete-stub))
|
||
for i in comps
|
||
;; Transform the relative names to abs names.
|
||
for file-cand = (and exp-entry
|
||
(if (file-remote-p i) i
|
||
(expand-file-name
|
||
i (file-name-directory
|
||
(if (directory-name-p pcomplete-stub)
|
||
entry
|
||
(directory-file-name entry))))))
|
||
;; Compare them to avoid dups.
|
||
for file-entry-p = (and (stringp exp-entry)
|
||
(stringp file-cand)
|
||
;; Fix :/tmp/foo/ $ cd foo
|
||
(not (file-directory-p file-cand))
|
||
(file-equal-p exp-entry file-cand))
|
||
if (and file-cand (or (file-remote-p file-cand)
|
||
(file-exists-p file-cand))
|
||
(not file-entry-p))
|
||
collect file-cand into ls
|
||
else
|
||
;; Avoid adding entry here.
|
||
unless file-entry-p collect i into ls
|
||
finally return
|
||
(if (and exp-entry
|
||
(file-directory-p exp-entry)
|
||
;; If the car of completion list is
|
||
;; an executable, probably we are in
|
||
;; command completion, so don't add a
|
||
;; possible file related entry here.
|
||
(and ls (not (executable-find (car ls))))
|
||
;; Don't add entry if already in prompt.
|
||
(not (file-equal-p exp-entry pcomplete-stub)))
|
||
(append (list exp-entry)
|
||
;; Entry should not be here now but double check.
|
||
(remove entry ls))
|
||
ls))))))
|
||
|
||
;;; Eshell history.
|
||
;;
|
||
;;
|
||
(defclass helm-eshell-history-source (helm-source-sync)
|
||
((init :initform
|
||
(lambda ()
|
||
;; Same comment as in `helm-source-esh'.
|
||
(remove-hook 'minibuffer-setup-hook 'eshell-mode)))
|
||
(candidates
|
||
:initform
|
||
(lambda ()
|
||
(with-helm-current-buffer
|
||
(cl-loop for c from 0 to (ring-length eshell-history-ring)
|
||
for elm = (eshell-get-history c)
|
||
unless (and (member elm lst)
|
||
eshell-hist-ignoredups)
|
||
collect elm into lst
|
||
finally return lst))))
|
||
(nomark :initform t)
|
||
(multiline :initform t)
|
||
(keymap :initform 'helm-eshell-history-map)
|
||
(candidate-number-limit :initform 9999)
|
||
(action :initform (lambda (candidate)
|
||
(eshell-kill-input)
|
||
(insert candidate))))
|
||
"Helm class to define source for Eshell history.")
|
||
|
||
|
||
(defun helm-esh-pcomplete-input (target users-comp last)
|
||
(if (and (stringp last)
|
||
(not (string= last ""))
|
||
(not users-comp)
|
||
;; Fix completion on "../" see Bug#1832.
|
||
(or (file-exists-p last)
|
||
(helm-aand
|
||
(file-name-directory last)
|
||
(file-directory-p it))))
|
||
(if (and (file-directory-p last)
|
||
(string-match "\\`[~.]*.*/[.]\\'" target))
|
||
;; Fix completion on "~/.", "~/[...]/.", and "../."
|
||
(expand-file-name
|
||
(concat (helm-basedir (file-name-as-directory last))
|
||
(regexp-quote (helm-basename target))))
|
||
(expand-file-name last))
|
||
;; Don't add "~" to input to provide completion on all users instead of only
|
||
;; on current $HOME (#1832).
|
||
(unless users-comp last)))
|
||
|
||
(defun helm-esh-pcomplete-default-source ()
|
||
"Make and return the default source for Eshell completion."
|
||
(helm-make-source "Eshell completions" 'helm-esh-source
|
||
:fuzzy-match helm-eshell-fuzzy-match
|
||
:keymap helm-esh-completion-map))
|
||
|
||
(defvar helm-esh-pcomplete-build-source-fn #'helm-esh-pcomplete-default-source
|
||
"Function that builds a source or a list of sources.")
|
||
|
||
(defun helm-esh-pcomplete--make-helm (&optional input)
|
||
(helm :sources (funcall helm-esh-pcomplete-build-source-fn)
|
||
:buffer "*helm pcomplete*"
|
||
:resume 'noresume
|
||
:input input))
|
||
|
||
;;;###autoload
|
||
(defun helm-esh-pcomplete ()
|
||
"Preconfigured `helm' to provide Helm completion in Eshell."
|
||
(interactive)
|
||
(let* ((helm-quit-if-no-candidate t)
|
||
(helm-execute-action-at-once-if-one t)
|
||
(end (point-marker))
|
||
(beg (save-excursion (eshell-bol) (point)))
|
||
(args (catch 'eshell-incomplete
|
||
(eshell-parse-arguments beg end)))
|
||
(target
|
||
(or (and (looking-back " " (1- (point))) " ")
|
||
(buffer-substring-no-properties
|
||
(save-excursion
|
||
(eshell-backward-argument 1) (point))
|
||
end)))
|
||
(users-comp (string= target "~"))
|
||
(first (car args)) ; Maybe lisp delimiter "(".
|
||
last ; Will be the last but parsed by pcomplete.
|
||
del-space
|
||
del-dot)
|
||
(setq helm-ec-target (or target " ")
|
||
end (point)
|
||
;; Reset beg for `with-helm-show-completion'.
|
||
beg (or (and target (not (string= target " "))
|
||
(- end (length target)))
|
||
;; Nothing at point.
|
||
(progn (insert " ") (setq del-space t) (point))))
|
||
(when (string-match "\\`[~.]*.*/[.]\\'" target)
|
||
;; Fix completion on
|
||
;; "~/.", "~/[...]/.", and "../."
|
||
(delete-char -1) (setq del-dot t)
|
||
(setq helm-ec-target (substring helm-ec-target 0 (1- (length helm-ec-target)))))
|
||
(cond ((eq first ?\()
|
||
(helm-lisp-completion-or-file-name-at-point))
|
||
;; In eshell `pcomplete-parse-arguments' is called
|
||
;; with `pcomplete-parse-arguments-function'
|
||
;; locally bound to `eshell-complete-parse-arguments'
|
||
;; which is calling `lisp-complete-symbol',
|
||
;; calling it before would popup the
|
||
;; *completions* buffer.
|
||
(t (setq last (replace-regexp-in-string
|
||
"\\`\\*" ""
|
||
(car (last (ignore-errors
|
||
(pcomplete-parse-arguments))))))
|
||
;; Set helm-eshell--quit-flag to non-nil only on
|
||
;; quit, this tells to not add final suffix when quitting
|
||
;; helm.
|
||
(add-hook 'helm-quit-hook #'helm-eshell--quit-hook-fn)
|
||
(with-helm-show-completion beg end
|
||
(unwind-protect
|
||
(or (helm-esh-pcomplete--make-helm
|
||
(helm-esh-pcomplete-input target users-comp last))
|
||
;; Delete removed dot on quit
|
||
(and del-dot (prog1 t (insert ".")))
|
||
;; A space is needed to have completion, remove
|
||
;; it when nothing found.
|
||
(and del-space (looking-back "\\s-" (1- (point)))
|
||
(delete-char -1))
|
||
(if (and (null helm-eshell--quit-flag)
|
||
(and (stringp last) (file-directory-p last))
|
||
(looking-back "\\([.]\\{1,2\\}\\|[^/]\\)\\'"
|
||
(1- (point))))
|
||
(prog1 t (insert "/"))
|
||
;; We need another flag for space here, but
|
||
;; global to pass it to `helm-quit-hook', this
|
||
;; space is added when point is just after
|
||
;; previous completion and there is no
|
||
;; more completion, see Bug#1832.
|
||
(unless (or helm-eshell--quit-flag
|
||
(looking-back "/\\'" (1- (point))))
|
||
(prog1 t (insert " ")))
|
||
(when (and helm-eshell--quit-flag
|
||
(string-match-p "[.]\\{2\\}\\'" last))
|
||
(insert "/"))))
|
||
(remove-hook 'helm-quit-hook #'helm-eshell--quit-hook-fn)
|
||
(setq helm-eshell--quit-flag nil)))))))
|
||
|
||
(defun helm-eshell--quit-hook-fn ()
|
||
(setq helm-eshell--quit-flag t))
|
||
|
||
;;;###autoload
|
||
(defun helm-eshell-history ()
|
||
"Preconfigured Helm for Eshell history."
|
||
(interactive)
|
||
(let* ((end (point))
|
||
(beg (save-excursion (eshell-bol) (point)))
|
||
(input (buffer-substring beg end))
|
||
flag-empty)
|
||
(when (eq beg end)
|
||
(insert " ")
|
||
(setq flag-empty t)
|
||
(setq end (point)))
|
||
(unwind-protect
|
||
(with-helm-show-completion beg end
|
||
(helm :sources (helm-make-source "Eshell history"
|
||
'helm-eshell-history-source
|
||
:fuzzy-match helm-eshell-fuzzy-match)
|
||
:buffer "*helm eshell history*"
|
||
:resume 'noresume
|
||
:input input))
|
||
(when (and flag-empty
|
||
(looking-back " " (1- (point))))
|
||
(delete-char -1)))))
|
||
|
||
|
||
;;; Eshell prompts
|
||
;;
|
||
(defface helm-eshell-prompts-promptidx
|
||
`((t ,@(and (>= emacs-major-version 27) '(:extend t))
|
||
:foreground "cyan"))
|
||
"Face used to highlight Eshell prompt index.")
|
||
|
||
(defface helm-eshell-prompts-buffer-name
|
||
`((t ,@(and (>= emacs-major-version 27) '(:extend t))
|
||
:foreground "green"))
|
||
"Face used to highlight Eshell buffer name.")
|
||
|
||
(defcustom helm-eshell-prompts-promptidx-p t
|
||
"Show prompt number."
|
||
:type 'boolean)
|
||
|
||
(defvar helm-eshell-prompts-keymap
|
||
(let ((map (make-sparse-keymap)))
|
||
(set-keymap-parent map helm-map)
|
||
(define-key map (kbd "C-c o") #'helm-eshell-prompts-other-window)
|
||
(define-key map (kbd "C-c C-o") #'helm-eshell-prompts-other-frame)
|
||
map)
|
||
"Keymap for `helm-eshell-prompt-all'.")
|
||
|
||
(defvar eshell-prompt-regexp)
|
||
(defvar eshell-highlight-prompt)
|
||
|
||
(defun helm-eshell-prompts-list (&optional buffer)
|
||
"List the prompts in Eshell BUFFER.
|
||
|
||
Return a list of (\"prompt\" (point) (buffer-name) prompt-index))
|
||
E.g. (\"ls\" 162 \"*eshell*\" 3).
|
||
If BUFFER is nil, use current buffer."
|
||
(with-current-buffer (or buffer (current-buffer))
|
||
(when (eq major-mode 'eshell-mode)
|
||
(save-excursion
|
||
(goto-char (point-min))
|
||
(let (result (count 1))
|
||
(helm-awhile (re-search-forward eshell-prompt-regexp nil t)
|
||
(when (or (and eshell-highlight-prompt
|
||
(get-text-property (match-beginning 0) 'read-only))
|
||
(null eshell-highlight-prompt))
|
||
(push (list (buffer-substring-no-properties
|
||
it (pos-eol))
|
||
it (buffer-name) count)
|
||
result)
|
||
(setq count (1+ count))))
|
||
(nreverse result))))))
|
||
|
||
(defun helm-eshell-prompts-list-all ()
|
||
"List the prompts of all Eshell buffers.
|
||
See `helm-eshell-prompts-list'."
|
||
(cl-loop for b in (buffer-list)
|
||
append (helm-eshell-prompts-list b)))
|
||
|
||
(defun helm-eshell-prompts-transformer (candidates &optional all)
|
||
;; ("ls" 162 "*eshell*" 3) => ("*eshell*:3:ls" . ("ls" 162 "*eshell*" 3))
|
||
(cl-loop for (prt pos buf id) in candidates
|
||
collect `(,(concat
|
||
(when all
|
||
(concat (propertize
|
||
buf
|
||
'face 'helm-eshell-prompts-buffer-name)
|
||
":"))
|
||
(when helm-eshell-prompts-promptidx-p
|
||
(concat (propertize
|
||
(number-to-string id)
|
||
'face 'helm-eshell-prompts-promptidx)
|
||
":"))
|
||
prt)
|
||
. ,(list prt pos buf id))))
|
||
|
||
(defun helm-eshell-prompts-all-transformer (candidates)
|
||
(helm-eshell-prompts-transformer candidates t))
|
||
|
||
(cl-defun helm-eshell-prompts-goto (candidate &optional (action 'switch-to-buffer))
|
||
;; Candidate format: ("ls" 162 "*eshell*" 3)
|
||
(let ((buf (nth 2 candidate)))
|
||
(unless (and (string= (buffer-name) buf)
|
||
(eq action 'switch-to-buffer))
|
||
(funcall action buf))
|
||
(goto-char (nth 1 candidate))
|
||
(recenter)))
|
||
|
||
(defun helm-eshell-prompts-goto-other-window (candidate)
|
||
(helm-eshell-prompts-goto candidate 'switch-to-buffer-other-window))
|
||
|
||
(defun helm-eshell-prompts-goto-other-frame (candidate)
|
||
(helm-eshell-prompts-goto candidate 'switch-to-buffer-other-frame))
|
||
|
||
(helm-make-command-from-action helm-eshell-prompts-other-window
|
||
"Switch to eshell prompt in other window."
|
||
'helm-eshell-prompts-goto-other-window)
|
||
|
||
(helm-make-command-from-action helm-eshell-prompts-other-frame
|
||
"Switch to eshell prompt in other frame."
|
||
'helm-eshell-prompts-goto-other-frame)
|
||
|
||
;;;###autoload
|
||
(defun helm-eshell-prompts ()
|
||
"Pre-configured `helm' to browse the prompts of the current Eshell."
|
||
(interactive)
|
||
(if (eq major-mode 'eshell-mode)
|
||
(helm :sources
|
||
(helm-build-sync-source "Eshell prompts"
|
||
:candidates (helm-eshell-prompts-list)
|
||
:candidate-transformer 'helm-eshell-prompts-transformer
|
||
:action '(("Go to prompt" . helm-eshell-prompts-goto)))
|
||
:buffer "*helm Eshell prompts*")
|
||
(message "Current buffer is not an Eshell buffer")))
|
||
|
||
;;;###autoload
|
||
(defun helm-eshell-prompts-all ()
|
||
"Pre-configured `helm' to browse the prompts of all Eshell sessions."
|
||
(interactive)
|
||
(helm :sources
|
||
(helm-build-sync-source "All Eshell prompts"
|
||
:candidates (helm-eshell-prompts-list-all)
|
||
:candidate-transformer 'helm-eshell-prompts-all-transformer
|
||
:action '(("Go to prompt" . helm-eshell-prompts-goto)
|
||
("Go to prompt in other window `C-c o`" .
|
||
helm-eshell-prompts-goto-other-window)
|
||
("Go to prompt in other frame `C-c C-o`" .
|
||
helm-eshell-prompts-goto-other-frame))
|
||
:keymap helm-eshell-prompts-keymap)
|
||
:buffer "*helm Eshell all prompts*"))
|
||
|
||
(provide 'helm-eshell)
|
||
|
||
;;; helm-eshell ends here
|