834 lines
35 KiB
EmacsLisp
834 lines
35 KiB
EmacsLisp
;;; helm-occur.el --- Incremental Occur for Helm. -*- lexical-binding: t -*-
|
||
|
||
;; Copyright (C) 2012 ~ 2021 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/>.
|
||
|
||
|
||
;;; Code:
|
||
|
||
(require 'cl-lib)
|
||
(require 'helm)
|
||
(require 'helm-help)
|
||
(require 'helm-utils)
|
||
|
||
(declare-function helm-buffers-get-visible-buffers "helm-buffers")
|
||
(declare-function helm-buffer-list "helm-buffers")
|
||
(declare-function helm-grep-split-line "helm-grep")
|
||
(declare-function helm-grep-highlight-match "helm-grep")
|
||
(declare-function helm-comp-read "helm-mode")
|
||
|
||
(defvar helm-current-error)
|
||
|
||
;;; Internals
|
||
;;
|
||
(defvar helm-source-occur nil
|
||
"This will be the name of the source related to `current-buffer'.
|
||
Don't use it as it value changes always.")
|
||
(defvar helm-source-moccur nil
|
||
"This is just a flag to add to `helm-sources-using-default-as-input'.
|
||
Don't set it to any value, it will have no effect.")
|
||
(defvar helm-occur--buffer-list nil)
|
||
(defvar helm-occur--buffer-tick nil)
|
||
(defvar helm-occur-history nil)
|
||
(defvar helm-occur--search-buffer-regexp "\\`\\([0-9]*\\)\\s-\\{1\\}\\(.*\\)\\'"
|
||
"The regexp matching candidates in helm-occur candidate buffer.")
|
||
(defvar helm-occur-mode--last-pattern nil)
|
||
(defvar helm-occur--initial-pos 0)
|
||
|
||
(defvar helm-occur-map
|
||
(let ((map (make-sparse-keymap)))
|
||
(set-keymap-parent map helm-map)
|
||
(define-key map (kbd "C-c o") 'helm-occur-run-goto-line-ow)
|
||
(define-key map (kbd "C-c C-o") 'helm-occur-run-goto-line-of)
|
||
(define-key map (kbd "C-x C-s") 'helm-occur-run-save-buffer)
|
||
map)
|
||
"Keymap used in occur source.")
|
||
|
||
(defgroup helm-occur nil
|
||
"Regexp related Applications and libraries for Helm."
|
||
:group 'helm)
|
||
|
||
(defcustom helm-occur-actions
|
||
'(("Go to Line" . helm-occur-goto-line)
|
||
("Goto line other window (C-u vertically)" . helm-occur-goto-line-ow)
|
||
("Goto line new frame" . helm-occur-goto-line-of)
|
||
("Save buffer" . helm-occur-save-results)
|
||
)
|
||
"Actions for helm-occur."
|
||
:type '(alist :key-type string :value-type function))
|
||
|
||
(defcustom helm-occur-use-ioccur-style-keys nil
|
||
"Similar to `helm-grep-use-ioccur-style-keys' but for multi occur.
|
||
|
||
Note that if you define this variable with `setq' your change will
|
||
have no effect, use customize instead."
|
||
:type 'boolean
|
||
:set (lambda (var val)
|
||
(set var val)
|
||
(if val
|
||
(progn
|
||
(define-key helm-occur-map (kbd "<right>") 'helm-occur-right)
|
||
(define-key helm-occur-map (kbd "<left>") 'helm-occur-run-default-action))
|
||
(define-key helm-occur-map (kbd "<right>") nil)
|
||
(define-key helm-occur-map (kbd "<left>") nil))))
|
||
|
||
(defcustom helm-occur-always-search-in-current nil
|
||
"Helm multi occur always search in current buffer when non--nil."
|
||
:type 'boolean)
|
||
|
||
(defcustom helm-occur-truncate-lines t
|
||
"Truncate lines in occur buffer when non nil."
|
||
:type 'boolean)
|
||
|
||
(defcustom helm-occur-auto-update-on-resume nil
|
||
"Allow auto updating helm-occur buffer when outdated.
|
||
noask => Always update without asking
|
||
nil => Don't update but signal buffer needs update
|
||
never => Never update and do not signal buffer needs update
|
||
Any other non--nil value update after confirmation."
|
||
:type '(radio :tag "Allow auto updating helm-occur buffer when outdated."
|
||
(const :tag "Always update without asking" noask)
|
||
(const :tag "Never update and do not signal buffer needs update" never)
|
||
(const :tag "Don't update but signal buffer needs update" nil)
|
||
(const :tag "Update after confirmation" t)))
|
||
|
||
(defcustom helm-occur-candidate-number-limit 99999
|
||
"Value of `helm-candidate-number-limit' for helm-occur."
|
||
:type 'integer)
|
||
|
||
(defcustom helm-occur-buffer-substring-fn-for-modes
|
||
'((mu4e-headers-mode . buffer-substring))
|
||
"Function to use to display buffer contents for major-mode.
|
||
|
||
Can be one of `buffer-substring' or `buffer-substring-no-properties'.
|
||
|
||
Note that when using `buffer-substring' initialization will be slower."
|
||
:type '(alist :key-type (symbol :tag "Mode")
|
||
:value-type (radio (const :tag "With text properties" buffer-substring)
|
||
(const :tag "Without text properties" buffer-substring-no-properties))))
|
||
|
||
(defcustom helm-occur-keep-closest-position t
|
||
"When non nil select closest candidate from point after update.
|
||
This happen only in `helm-source-occur' which is always related to
|
||
`current-buffer'."
|
||
:type 'boolean)
|
||
|
||
(defcustom helm-occur-ignore-diacritics nil
|
||
"When non nil helm-occur will ignore diacritics in patterns."
|
||
:type 'boolean)
|
||
|
||
(defface helm-moccur-buffer
|
||
`((t ,@(and (>= emacs-major-version 27) '(:extend t))
|
||
:foreground "DarkTurquoise" :underline t))
|
||
"Face used to highlight occur buffer names.")
|
||
|
||
(defface helm-resume-need-update
|
||
`((t ,@(and (>= emacs-major-version 27) '(:extend t))
|
||
:background "red"))
|
||
"Face used to flash occur buffer when it needs update.")
|
||
|
||
|
||
(defun helm-occur--select-closest-candidate ()
|
||
;; Prevent error with `with-helm-window' when switching to help.
|
||
(unless (or (not (get-buffer-window helm-buffer 'visible))
|
||
(string-equal helm-pattern ""))
|
||
(with-helm-window
|
||
(let ((lst '())
|
||
(name (helm-get-attr 'name helm-source-occur))
|
||
closest beg end)
|
||
(while-no-input
|
||
(goto-char (point-min))
|
||
(if (string= name "Helm occur")
|
||
(setq beg (point)
|
||
end (point-max))
|
||
(helm-awhile (helm-get-next-header-pos)
|
||
(when (string= name (buffer-substring-no-properties
|
||
(point-at-bol) (point-at-eol)))
|
||
(forward-line 1)
|
||
(setq beg (point)
|
||
end (or (helm-get-next-header-pos) (point-max)))
|
||
(cl-return))))
|
||
(save-excursion
|
||
(when (and beg end)
|
||
(goto-char beg)
|
||
(while (re-search-forward "^[0-9]+" end t)
|
||
(push (string-to-number (match-string 0)) lst))
|
||
(setq closest (helm-closest-number-in-list
|
||
helm-occur--initial-pos lst))))
|
||
(when (and closest (re-search-forward (format "^%s" closest) end t))
|
||
(helm-mark-current-line)
|
||
(goto-char (overlay-start
|
||
helm-selection-overlay))))))))
|
||
|
||
;;;###autoload
|
||
(defun helm-occur ()
|
||
"Preconfigured helm for searching lines matching pattern in `current-buffer'.
|
||
|
||
When `helm-source-occur' is member of
|
||
`helm-sources-using-default-as-input' which is the default,
|
||
symbol at point is searched at startup.
|
||
|
||
When a region is marked search only in this region by narrowing.
|
||
|
||
To search in multiples buffers start from one of the commands listing
|
||
buffers (i.e. a helm command using `helm-source-buffers-list' like
|
||
`helm-mini') and use the multi occur buffers action.
|
||
|
||
This is the helm implementation that collect lines matching pattern
|
||
like vanilla Emacs `occur' but have nothing to do with it, the search
|
||
engine beeing completely different and also much faster."
|
||
(interactive)
|
||
(setq helm-source-occur
|
||
(car (helm-occur-build-sources (list (current-buffer)) "Helm occur")))
|
||
(helm-set-local-variable 'helm-occur--buffer-list (list (current-buffer))
|
||
'helm-occur--buffer-tick
|
||
(list (buffer-chars-modified-tick (current-buffer))))
|
||
(helm-set-attr 'header-name (lambda (_name)
|
||
(format "HO [%s]"
|
||
(buffer-name helm-current-buffer)))
|
||
helm-source-occur)
|
||
(when helm-occur-keep-closest-position
|
||
(setq helm-occur--initial-pos (line-number-at-pos))
|
||
(add-hook 'helm-after-update-hook 'helm-occur--select-closest-candidate))
|
||
(save-restriction
|
||
(let ((helm-sources-using-default-as-input
|
||
(unless (> (buffer-size) 2000000)
|
||
helm-sources-using-default-as-input))
|
||
def pos)
|
||
(when (use-region-p)
|
||
;; When user mark defun with `mark-defun' with intention of
|
||
;; using helm-occur on this region, it is relevant to use the
|
||
;; thing-at-point located at previous position which have been
|
||
;; pushed to `mark-ring', if it's within the active region.
|
||
(let ((beg (region-beginning))
|
||
(end (region-end))
|
||
(prev-pos (car mark-ring)))
|
||
(when (and prev-pos (>= prev-pos beg) (< prev-pos end))
|
||
(setq def (save-excursion
|
||
(goto-char (setq pos prev-pos))
|
||
(helm-aif (thing-at-point 'symbol) (regexp-quote it)))))
|
||
(narrow-to-region beg end)))
|
||
(unwind-protect
|
||
(helm :sources 'helm-source-occur
|
||
:buffer "*helm occur*"
|
||
:history 'helm-occur-history
|
||
:default (or def (helm-aif (thing-at-point 'symbol)
|
||
(regexp-quote it)))
|
||
:preselect (and (memq 'helm-source-occur
|
||
helm-sources-using-default-as-input)
|
||
(format "^%d:" (line-number-at-pos
|
||
(or pos (point)))))
|
||
:truncate-lines helm-occur-truncate-lines)
|
||
(deactivate-mark t)
|
||
(remove-hook 'helm-after-update-hook 'helm-occur--select-closest-candidate)))))
|
||
|
||
;;;###autoload
|
||
(defun helm-occur-visible-buffers ()
|
||
"Run helm-occur on all visible buffers in frame."
|
||
(interactive)
|
||
(require 'helm-buffers)
|
||
(if (or (one-window-p) (region-active-p))
|
||
(call-interactively #'helm-occur)
|
||
(let ((buffers (helm-buffers-get-visible-buffers)))
|
||
(helm-multi-occur-1 (mapcar 'get-buffer buffers)))))
|
||
|
||
(defun helm-occur-transformer (candidates source)
|
||
"Return CANDIDATES prefixed with line number."
|
||
(cl-loop with buf = (helm-get-attr 'buffer-name source)
|
||
for c in candidates
|
||
for disp-linum = (when (string-match helm-occur--search-buffer-regexp c)
|
||
(let ((linum (match-string 1 c))
|
||
(disp (match-string 2 c)))
|
||
(list
|
||
linum
|
||
(format "%s:%s"
|
||
(propertize
|
||
linum 'face 'helm-grep-lineno
|
||
'help-echo (buffer-file-name
|
||
(get-buffer buf)))
|
||
disp))))
|
||
for linum = (car disp-linum)
|
||
for disp = (cadr disp-linum)
|
||
when (and disp (not (string= disp "")))
|
||
collect (cons disp (string-to-number linum))))
|
||
|
||
(defclass helm-moccur-class (helm-source-in-buffer)
|
||
((buffer-name :initarg :buffer-name
|
||
:initform nil)
|
||
(moccur-buffers :initarg :moccur-buffers
|
||
:initform nil)
|
||
(find-file-target :initform #'helm-occur-quit-an-find-file-fn)))
|
||
|
||
(defun helm-occur-build-sources (buffers &optional source-name)
|
||
"Build sources for `helm-occur' for each buffer in BUFFERS list."
|
||
(cl-loop for buf in buffers
|
||
for bname = (buffer-name buf)
|
||
collect
|
||
(helm-make-source (or source-name bname)
|
||
'helm-moccur-class
|
||
:header-name (lambda (name)
|
||
(format "HO [%s]" (if (string= name "Helm occur")
|
||
bname name)))
|
||
:buffer-name bname
|
||
:match-part
|
||
(lambda (candidate)
|
||
;; The regexp should match what is in candidate buffer,
|
||
;; not what is displayed in helm-buffer e.g. "12 foo"
|
||
;; and not "12:foo".
|
||
(when (string-match helm-occur--search-buffer-regexp
|
||
candidate)
|
||
(match-string 2 candidate)))
|
||
:diacritics helm-occur-ignore-diacritics
|
||
:search (lambda (pattern)
|
||
(when (string-match "\\`\\^\\([^ ]*\\)" pattern)
|
||
(setq pattern (concat "^[0-9]* \\{1\\}" (match-string 1 pattern))))
|
||
(condition-case _err
|
||
(re-search-forward pattern nil t)
|
||
(invalid-regexp nil)))
|
||
:init `(lambda ()
|
||
(with-current-buffer ,buf
|
||
(let* ((bsfn (or (cdr (assq
|
||
major-mode
|
||
helm-occur-buffer-substring-fn-for-modes))
|
||
#'buffer-substring-no-properties))
|
||
(contents (funcall bsfn (point-min) (point-max))))
|
||
(helm-set-attr 'get-line bsfn)
|
||
(with-current-buffer (helm-candidate-buffer 'global)
|
||
(insert contents)
|
||
(goto-char (point-min))
|
||
(let ((linum 1))
|
||
(insert (format "%s " linum))
|
||
(while (re-search-forward "\n" nil t)
|
||
(cl-incf linum)
|
||
(insert (format "%s " linum))))))))
|
||
:filtered-candidate-transformer 'helm-occur-transformer
|
||
:help-message 'helm-moccur-help-message
|
||
:nomark t
|
||
:migemo t
|
||
;; Needed for resume.
|
||
:history 'helm-occur-history
|
||
:candidate-number-limit helm-occur-candidate-number-limit
|
||
:action 'helm-occur-actions
|
||
:requires-pattern 2
|
||
:follow 1
|
||
:group 'helm-occur
|
||
:keymap helm-occur-map
|
||
:resume 'helm-occur-resume-fn
|
||
:moccur-buffers buffers)))
|
||
|
||
(defun helm-multi-occur-1 (buffers &optional input)
|
||
"Run `helm-occur' on a list of buffers.
|
||
Each buffer's result is displayed in a separated source."
|
||
(let* ((curbuf (current-buffer))
|
||
(bufs (if helm-occur-always-search-in-current
|
||
(cons curbuf (remove curbuf buffers))
|
||
buffers))
|
||
(helm-sources-using-default-as-input
|
||
(unless (cl-loop with total_size = 0
|
||
for b in bufs
|
||
do (setq total_size (buffer-size b))
|
||
finally return (> total_size 2000000))
|
||
helm-sources-using-default-as-input))
|
||
(sources (helm-occur-build-sources bufs (and (eql curbuf (car bufs))
|
||
(not (cdr bufs))
|
||
"Helm occur")))
|
||
(helm-maybe-use-default-as-input
|
||
(not (null (memq 'helm-source-moccur
|
||
helm-sources-using-default-as-input)))))
|
||
(helm-set-local-variable 'helm-occur--buffer-list bufs
|
||
'helm-occur--buffer-tick
|
||
(cl-loop for b in bufs collect
|
||
(buffer-chars-modified-tick
|
||
(get-buffer b))))
|
||
(when (and helm-occur-always-search-in-current
|
||
helm-occur-keep-closest-position)
|
||
(setq helm-source-occur
|
||
(cl-loop for s in sources
|
||
when (eql helm-current-buffer
|
||
(get-buffer (helm-get-attr 'buffer-name s)))
|
||
return s))
|
||
(setq helm-occur--initial-pos (line-number-at-pos))
|
||
(add-hook 'helm-after-update-hook 'helm-occur--select-closest-candidate))
|
||
(unwind-protect
|
||
(helm :sources sources
|
||
:buffer "*helm moccur*"
|
||
:history 'helm-occur-history
|
||
:default (helm-aif (thing-at-point 'symbol) (regexp-quote it))
|
||
:input input
|
||
:truncate-lines helm-occur-truncate-lines)
|
||
(remove-hook 'helm-after-update-hook 'helm-occur--select-closest-candidate))))
|
||
|
||
;;; Actions
|
||
;;
|
||
(cl-defun helm-occur-action (lineno
|
||
&optional (method (quote buffer)))
|
||
"Jump to line number LINENO with METHOD.
|
||
METHOD can be one of buffer, buffer-other-window, buffer-other-frame."
|
||
(require 'helm-grep)
|
||
(let ((buf (if (eq major-mode 'helm-occur-mode)
|
||
(get-text-property (point) 'buffer-name)
|
||
(helm-get-attr 'buffer-name)))
|
||
(split-pat (helm-mm-split-pattern helm-input)))
|
||
(cl-case method
|
||
(buffer (switch-to-buffer buf))
|
||
(buffer-other-window (helm-window-show-buffers (list buf) t))
|
||
(buffer-other-frame (switch-to-buffer-other-frame buf)))
|
||
(with-current-buffer buf
|
||
(helm-goto-line lineno)
|
||
;; Move point to the nearest matching regexp from bol.
|
||
(cl-loop for reg in split-pat
|
||
when (save-excursion
|
||
(condition-case _err
|
||
(if helm-migemo-mode
|
||
(helm-mm-migemo-forward reg (point-at-eol) t)
|
||
(re-search-forward reg (point-at-eol) t))
|
||
(invalid-regexp nil)))
|
||
collect (match-beginning 0) into pos-ls
|
||
finally (when pos-ls (goto-char (apply #'min pos-ls)))))))
|
||
|
||
(defun helm-occur-goto-line (candidate)
|
||
"From multi occur, switch to buffer and CANDIDATE line."
|
||
(helm-occur-action
|
||
candidate 'buffer))
|
||
|
||
(defun helm-occur-goto-line-ow (candidate)
|
||
"Go to CANDIDATE line in other window.
|
||
Same as `helm-occur-goto-line' but go in other window."
|
||
(helm-occur-action
|
||
candidate 'buffer-other-window))
|
||
|
||
(defun helm-occur-goto-line-of (candidate)
|
||
"Go to CANDIDATE line in new frame.
|
||
Same as `helm-occur-goto-line' but go in new frame."
|
||
(helm-occur-action
|
||
candidate 'buffer-other-frame))
|
||
|
||
(defun helm-occur-run-goto-line-ow ()
|
||
"Run goto line other window action from `helm-occur'."
|
||
(interactive)
|
||
(with-helm-alive-p
|
||
(helm-exit-and-execute-action 'helm-occur-goto-line-ow)))
|
||
(put 'helm-occur-run-goto-line-ow 'helm-only t)
|
||
|
||
(defun helm-occur-run-goto-line-of ()
|
||
"Run goto line new frame action from `helm-occur'."
|
||
(interactive)
|
||
(with-helm-alive-p
|
||
(helm-exit-and-execute-action 'helm-occur-goto-line-of)))
|
||
(put 'helm-occur-run-goto-line-of 'helm-only t)
|
||
|
||
(defun helm-occur-run-default-action ()
|
||
(interactive)
|
||
(with-helm-alive-p
|
||
(helm-exit-and-execute-action 'helm-occur-goto-line)))
|
||
(put 'helm-occur-run-default-action 'helm-only t)
|
||
|
||
(defun helm-occur-run-save-buffer ()
|
||
"Run moccur save results action from `helm-moccur'."
|
||
(interactive)
|
||
(with-helm-alive-p
|
||
(helm-exit-and-execute-action 'helm-occur-save-results)))
|
||
(put 'helm-moccur-run-save-buffer 'helm-only t)
|
||
|
||
(defun helm-occur-right ()
|
||
"`helm-occur' action for right arrow.
|
||
This is used when `helm-occur-use-ioccur-style-keys' is enabled.
|
||
If follow is enabled (default) go to next source, otherwise execute
|
||
persistent action."
|
||
(interactive)
|
||
(if (helm-aand (helm-get-attr 'follow) (> it 0))
|
||
(helm-next-source)
|
||
(helm-execute-persistent-action)))
|
||
(put 'helm-occur-right 'helm-only t)
|
||
|
||
(defun helm-occur-quit-an-find-file-fn (source)
|
||
(let* ((sel (helm-get-selection nil nil source))
|
||
(occur-fname (helm-aand (numberp sel)
|
||
(helm-get-attr 'buffer-name)
|
||
(buffer-file-name (get-buffer it)))))
|
||
(when (and occur-fname (file-exists-p occur-fname))
|
||
(expand-file-name occur-fname))))
|
||
|
||
;;; helm-occur-mode
|
||
;;
|
||
;;
|
||
(defvar helm-occur-mode-map
|
||
(let ((map (make-sparse-keymap)))
|
||
(define-key map (kbd "RET") 'helm-occur-mode-goto-line)
|
||
(define-key map (kbd "C-o") 'helm-occur-mode-goto-line-ow)
|
||
(define-key map (kbd "<C-down>") 'helm-occur-mode-goto-line-ow-forward)
|
||
(define-key map (kbd "<C-up>") 'helm-occur-mode-goto-line-ow-backward)
|
||
(define-key map (kbd "<M-down>") 'helm-gm-next-file)
|
||
(define-key map (kbd "<M-up>") 'helm-gm-precedent-file)
|
||
(define-key map (kbd "M-n") 'helm-occur-mode-goto-line-ow-forward)
|
||
(define-key map (kbd "M-p") 'helm-occur-mode-goto-line-ow-backward)
|
||
(define-key map (kbd "M-N") 'helm-gm-next-file)
|
||
(define-key map (kbd "M-P") 'helm-gm-precedent-file)
|
||
(define-key map (kbd "C-c b") 'helm-occur-mode-resume-session)
|
||
map))
|
||
|
||
(defun helm-occur-mode-goto-line ()
|
||
(interactive)
|
||
(setq next-error-last-buffer (current-buffer))
|
||
(setq-local helm-current-error (point-marker))
|
||
(helm-aif (get-text-property (point) 'helm-realvalue)
|
||
(progn (helm-occur-goto-line it) (helm-match-line-cleanup-pulse))))
|
||
|
||
(defun helm-occur-mode-goto-line-ow ()
|
||
(interactive)
|
||
(setq next-error-last-buffer (current-buffer))
|
||
(setq-local helm-current-error (point-marker))
|
||
(helm-aif (get-text-property (point) 'helm-realvalue)
|
||
(progn (helm-occur-goto-line-ow it) (helm-match-line-cleanup-pulse))))
|
||
|
||
(defun helm-occur-mode-goto-line-ow-forward-1 (arg)
|
||
(condition-case nil
|
||
(progn
|
||
(when (or (eq last-command 'helm-occur-mode-goto-line-ow-forward)
|
||
(eq last-command 'helm-occur-mode-goto-line-ow-backward))
|
||
(forward-line arg))
|
||
(save-selected-window
|
||
(helm-occur-mode-goto-line-ow)
|
||
(recenter)))
|
||
(error nil)))
|
||
|
||
(defun helm-occur-mode-goto-line-ow-forward (arg)
|
||
(interactive "p")
|
||
(helm-occur-mode-goto-line-ow-forward-1 arg))
|
||
|
||
(defun helm-occur-mode-goto-line-ow-backward (arg)
|
||
(interactive "p")
|
||
(helm-occur-mode-goto-line-ow-forward-1 (- arg)))
|
||
|
||
(defun helm-occur-save-results (_candidate)
|
||
"Save helm moccur results in a `helm-moccur-mode' buffer."
|
||
(let ((buf "*hmoccur*")
|
||
new-buf)
|
||
(when (get-buffer buf)
|
||
(setq new-buf (helm-read-string "OccurBufferName: " buf))
|
||
(cl-loop for b in (helm-buffer-list)
|
||
when (and (string= new-buf b)
|
||
(not (y-or-n-p
|
||
(format "Buffer `%s' already exists overwrite? "
|
||
new-buf))))
|
||
do (setq new-buf (helm-read-string
|
||
"OccurBufferName: " "*hmoccur ")))
|
||
(setq buf new-buf))
|
||
(with-current-buffer (get-buffer-create buf)
|
||
(kill-all-local-variables)
|
||
(setq buffer-read-only t)
|
||
(buffer-disable-undo)
|
||
(let ((inhibit-read-only t)
|
||
(map (make-sparse-keymap))
|
||
buf-name)
|
||
(erase-buffer)
|
||
(insert "-*- mode: helm-occur -*-\n\n"
|
||
(format "Occur Results for `%s':\n\n" helm-input))
|
||
(save-excursion
|
||
(insert (with-current-buffer helm-buffer
|
||
(goto-char (point-min))
|
||
(forward-line 1)
|
||
(buffer-substring (point) (point-max)))))
|
||
(save-excursion
|
||
(forward-line -2)
|
||
(while (not (eobp))
|
||
(if (helm-pos-header-line-p)
|
||
(let ((beg (point-at-bol))
|
||
(end (point-at-eol)))
|
||
(set-text-properties beg (1+ end) nil)
|
||
(delete-region (1- beg) end))
|
||
(helm-aif (setq buf-name (assoc-default
|
||
'buffer-name
|
||
(get-text-property (point) 'helm-cur-source)))
|
||
(progn
|
||
(insert (propertize (concat it ":")
|
||
'face 'helm-moccur-buffer
|
||
'helm-realvalue (get-text-property (point) 'helm-realvalue)))
|
||
(add-text-properties
|
||
(point-at-bol) (point-at-eol)
|
||
`(buffer-name ,buf-name))
|
||
(add-text-properties
|
||
(point-at-bol) (point-at-eol)
|
||
`(keymap ,map
|
||
help-echo ,(concat
|
||
(buffer-file-name
|
||
(get-buffer buf-name))
|
||
"\nmouse-1: set point\nmouse-2: jump to selection")
|
||
mouse-face highlight
|
||
invisible nil))
|
||
(define-key map [mouse-1] 'mouse-set-point)
|
||
(define-key map [mouse-2] 'helm-occur-mode-mouse-goto-line)
|
||
(define-key map [mouse-3] 'ignore))))
|
||
(forward-line 1))))
|
||
(buffer-enable-undo)
|
||
(helm-occur-mode))
|
||
(pop-to-buffer buf)
|
||
(setq next-error-last-buffer (get-buffer buf))
|
||
(message "Helm occur Results saved in `%s' buffer" buf)))
|
||
|
||
(defun helm-occur-mode-mouse-goto-line (event)
|
||
(interactive "e")
|
||
(let* ((window (posn-window (event-end event)))
|
||
(pos (posn-point (event-end event))))
|
||
(with-selected-window window
|
||
(when (eq major-mode 'helm-occur-mode)
|
||
(goto-char pos)
|
||
(helm-occur-mode-goto-line)))))
|
||
(put 'helm-moccur-mode-mouse-goto-line 'helm-only t)
|
||
|
||
(defun helm-occur-mode-resume-session ()
|
||
(interactive)
|
||
(cl-assert (eq major-mode 'helm-occur-mode) nil "Helm command called in wrong context")
|
||
(helm-multi-occur-1 helm-occur--buffer-list helm-occur-mode--last-pattern))
|
||
|
||
(defun helm-occur-buffer-substring-with-linums ()
|
||
"Return current-buffer contents as a string with all lines
|
||
numbered. The property \\='buffer-name is added to the whole string."
|
||
(let ((bufstr (buffer-substring-no-properties (point-min) (point-max)))
|
||
(bufname (buffer-name)))
|
||
(with-temp-buffer
|
||
(save-excursion
|
||
(insert bufstr))
|
||
(let ((linum 1))
|
||
(insert (format "%s " linum))
|
||
(while (re-search-forward "\n" nil t)
|
||
(cl-incf linum)
|
||
(insert (format "%s " linum)))
|
||
(add-text-properties (point-min) (point-max) `(buffer-name ,bufname)))
|
||
(buffer-string))))
|
||
|
||
(defun helm-occur-mode--revert-buffer-function (&optional _ignore-auto _noconfirm)
|
||
"The `revert-buffer-function' for `helm-occur-mode'."
|
||
(goto-char (point-min))
|
||
(let (pattern)
|
||
(when (re-search-forward "^Occur Results for `\\(.*\\)'" nil t)
|
||
(setq pattern (match-string 1))
|
||
(forward-line 0)
|
||
(when (re-search-forward "^$" nil t)
|
||
(forward-line 1))
|
||
(let ((inhibit-read-only t)
|
||
(buffer (current-buffer))
|
||
(buflst helm-occur--buffer-list))
|
||
(delete-region (point) (point-max))
|
||
(message "Reverting buffer...")
|
||
(save-excursion
|
||
(with-temp-buffer
|
||
(insert
|
||
"\n"
|
||
(cl-loop for buf in buflst
|
||
for bufstr = (or (and (buffer-live-p (get-buffer buf))
|
||
(with-current-buffer buf
|
||
(helm-occur-buffer-substring-with-linums)))
|
||
"")
|
||
concat bufstr)
|
||
"\n")
|
||
(goto-char (point-min))
|
||
(cl-loop with linum
|
||
with mpart
|
||
;; Bind helm-pattern used by `helm-grep-split-line'.
|
||
with helm-pattern = pattern
|
||
while (helm-mm-search pattern) ; point is at eol.
|
||
;; Calculate line number (linum) and extract real
|
||
;; part of line (mpart).
|
||
do (when (save-excursion
|
||
;; `helm-mm-search' puts point at eol.
|
||
(forward-line 0)
|
||
(re-search-forward "^\\([0-9]*\\)\\s-\\{1\\}\\(.*\\)$"
|
||
(point-at-eol) t))
|
||
(setq linum (string-to-number (match-string 1))
|
||
mpart (match-string 2)))
|
||
;; Match part after line number.
|
||
when (and mpart (helm-mm-match mpart pattern))
|
||
for line = (format "%s:%d:%s"
|
||
(get-text-property (point) 'buffer-name)
|
||
linum
|
||
mpart)
|
||
when line
|
||
do (with-current-buffer buffer
|
||
(insert
|
||
(propertize
|
||
(car (helm-occur-filter-one-by-one line))
|
||
'helm-realvalue linum)
|
||
"\n"))))
|
||
(when (fboundp 'wgrep-cleanup-overlays)
|
||
(wgrep-cleanup-overlays (point-min) (point-max)))
|
||
(message "Reverting buffer done")
|
||
(when executing-kbd-macro (sit-for 1)))))))
|
||
|
||
(defun helm-occur-filter-one-by-one (candidate)
|
||
"`filter-one-by-one' function for `helm-source-moccur'."
|
||
(require 'helm-grep)
|
||
(let* ((split (helm-grep-split-line candidate))
|
||
(buf (car split))
|
||
(lineno (nth 1 split))
|
||
(str (nth 2 split)))
|
||
(cons (concat (propertize
|
||
buf
|
||
'face 'helm-moccur-buffer
|
||
'help-echo (buffer-file-name
|
||
(get-buffer buf))
|
||
'buffer-name buf)
|
||
":"
|
||
(propertize lineno 'face 'helm-grep-lineno)
|
||
":"
|
||
(helm-grep-highlight-match str))
|
||
candidate)))
|
||
|
||
(define-derived-mode helm-occur-mode
|
||
special-mode "helm-moccur"
|
||
"Major mode to provide actions in helm moccur saved buffer.
|
||
|
||
Special commands:
|
||
\\{helm-occur-mode-map}"
|
||
(set (make-local-variable 'helm-occur--buffer-list)
|
||
(with-helm-buffer helm-occur--buffer-list))
|
||
(set (make-local-variable 'revert-buffer-function)
|
||
#'helm-occur-mode--revert-buffer-function)
|
||
(set (make-local-variable 'helm-occur-mode--last-pattern)
|
||
helm-input)
|
||
(set (make-local-variable 'next-error-function)
|
||
#'helm-occur-next-error)
|
||
(set (make-local-variable 'helm-current-error) nil))
|
||
(put 'helm-moccur-mode 'helm-only t)
|
||
|
||
(defun helm-occur-next-error (&optional argp reset)
|
||
"Goto ARGP position from a `helm-occur-mode' buffer.
|
||
RESET non-nil means rewind to the first match.
|
||
This is the `next-error-function' for `helm-occur-mode'."
|
||
(interactive "p")
|
||
(goto-char (cond (reset (point-min))
|
||
((and (< argp 0) helm-current-error)
|
||
(line-beginning-position))
|
||
((and (> argp 0) helm-current-error)
|
||
(line-end-position))
|
||
((point))))
|
||
(let ((fun (if (> argp 0)
|
||
#'next-single-property-change
|
||
#'previous-single-property-change)))
|
||
(helm-aif (funcall fun (point) 'buffer-name)
|
||
(progn
|
||
(goto-char it)
|
||
(forward-line 0)
|
||
;; `helm-current-error' is set in
|
||
;; `helm-occur-mode-goto-line'.
|
||
(helm-occur-mode-goto-line))
|
||
(user-error "No more matches"))))
|
||
|
||
;;; Resume
|
||
;;
|
||
(defun helm-occur-resume-fn ()
|
||
(with-helm-buffer
|
||
(let (new-tick-ls buffer-is-modified)
|
||
(set (make-local-variable 'helm-occur--buffer-list)
|
||
(cl-loop for b in helm-occur--buffer-list
|
||
when (buffer-live-p (get-buffer b))
|
||
collect b))
|
||
(setq buffer-is-modified (/= (length helm-occur--buffer-list)
|
||
(length (helm-get-attr 'moccur-buffers))))
|
||
(helm-set-attr 'moccur-buffers helm-occur--buffer-list)
|
||
(setq new-tick-ls (cl-loop for b in helm-occur--buffer-list
|
||
collect (buffer-chars-modified-tick
|
||
(get-buffer b))))
|
||
(when buffer-is-modified
|
||
(setq helm-occur--buffer-tick new-tick-ls))
|
||
(cl-assert (> (length helm-occur--buffer-list) 0) nil
|
||
"helm-resume error: helm-(m)occur buffer list is empty")
|
||
(unless (eq helm-occur-auto-update-on-resume 'never)
|
||
(when (or buffer-is-modified
|
||
(cl-loop for b in helm-occur--buffer-list
|
||
for new-tick = (buffer-chars-modified-tick
|
||
(get-buffer b))
|
||
for tick in helm-occur--buffer-tick
|
||
thereis (/= tick new-tick)))
|
||
(helm-aif helm-occur-auto-update-on-resume
|
||
(when (or (eq it 'noask)
|
||
(y-or-n-p "Helm (m)occur Buffer outdated, update? "))
|
||
(run-with-idle-timer
|
||
0.1 nil (lambda ()
|
||
(with-helm-buffer
|
||
(helm-force-update)
|
||
(message "Helm (m)occur Buffer have been udated")
|
||
(sit-for 1) (message nil))))
|
||
(unless buffer-is-modified (setq helm-occur--buffer-tick
|
||
new-tick-ls)))
|
||
(run-with-idle-timer
|
||
0.1 nil
|
||
(lambda ()
|
||
(with-helm-buffer
|
||
(let ((ov (make-overlay (save-excursion
|
||
(goto-char (point-min))
|
||
(forward-line 1)
|
||
(point))
|
||
(point-max))))
|
||
(overlay-put ov 'face 'helm-resume-need-update)
|
||
(sit-for 0)
|
||
(delete-overlay ov)
|
||
(message "[Helm occur Buffer outdated (C-c C-u to update)]")))))
|
||
(unless buffer-is-modified
|
||
(with-helm-after-update-hook
|
||
(setq helm-occur--buffer-tick new-tick-ls)
|
||
(message "Helm (m)occur Buffer have been udated")))))))))
|
||
|
||
;;; Helm occur from isearch
|
||
;;
|
||
;;;###autoload
|
||
(defun helm-occur-from-isearch ()
|
||
"Invoke `helm-occur' from isearch.
|
||
|
||
To use this bind it to a key in `isearch-mode-map'."
|
||
(interactive)
|
||
(let ((input (if isearch-regexp
|
||
isearch-string
|
||
(regexp-quote isearch-string)))
|
||
(bufs (list (current-buffer)))
|
||
;; Use `helm-occur-always-search-in-current' as a flag for
|
||
;; `helm-occur--select-closest-candidate'.
|
||
(helm-occur-always-search-in-current t))
|
||
(isearch-exit)
|
||
(helm-multi-occur-1 bufs input)))
|
||
|
||
;;;###autoload
|
||
(defun helm-multi-occur-from-isearch ()
|
||
"Invoke `helm-multi-occur' from isearch.
|
||
|
||
With a prefix arg, reverse the behavior of
|
||
`helm-moccur-always-search-in-current'.
|
||
The prefix arg can be set before calling
|
||
`helm-multi-occur-from-isearch' or during the buffer selection.
|
||
|
||
To use this bind it to a key in `isearch-mode-map'."
|
||
(interactive)
|
||
(let (buf-list
|
||
helm-moccur-always-search-in-current
|
||
(input (if isearch-regexp
|
||
isearch-string
|
||
(regexp-quote isearch-string))))
|
||
(isearch-exit)
|
||
(setq buf-list (mapcar 'get-buffer
|
||
(helm-comp-read "Buffers: "
|
||
(helm-buffer-list)
|
||
:name "Occur in buffer(s)"
|
||
:marked-candidates t)))
|
||
(setq helm-moccur-always-search-in-current
|
||
(if (or current-prefix-arg
|
||
helm-current-prefix-arg)
|
||
(not helm-moccur-always-search-in-current)
|
||
helm-moccur-always-search-in-current))
|
||
(helm-multi-occur-1 buf-list input)))
|
||
|
||
(provide 'helm-occur)
|
||
|
||
;;; helm-occur.el ends here
|