133 lines
4.4 KiB
EmacsLisp
133 lines
4.4 KiB
EmacsLisp
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;;; helm-regexp.el --- In buffer regexp searching and replacement for helm. -*- lexical-binding: t -*-
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;; Copyright (C) 2012 ~ 2021 Thierry Volpiatto <thierry.volpiatto@gmail.com>
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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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;;; Code:
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(require 'cl-lib)
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(require 'helm)
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(require 'helm-help)
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(require 'helm-utils)
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(declare-function helm-mm-split-pattern "helm-multi-match")
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(defgroup helm-regexp nil
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"Regexp related Applications and libraries for Helm."
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:group 'helm)
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;; History vars
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(defvar helm-build-regexp-history nil)
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(defun helm-query-replace-regexp (_candidate)
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"Query replace regexp from `helm-regexp'.
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With a prefix arg replace only matches surrounded by word boundaries,
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i.e. don't replace inside a word, regexp is surrounded with \\bregexp\\b."
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(let ((regexp helm-input))
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(apply 'query-replace-regexp
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(helm-query-replace-args regexp))))
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(defun helm-kill-regexp-as-sexp (_candidate)
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"Kill regexp in a format usable in lisp code."
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(helm-regexp-kill-new
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(prin1-to-string helm-input)))
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(defun helm-kill-regexp (_candidate)
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"Kill regexp as it is in `helm-pattern'."
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(helm-regexp-kill-new helm-input))
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(defun helm-query-replace-args (regexp)
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"Create arguments of `query-replace-regexp' action in `helm-regexp'."
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(let ((region-only (helm-region-active-p)))
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(list
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regexp
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(query-replace-read-to regexp
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(format "Query replace %sregexp %s"
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(if helm-current-prefix-arg "word " "")
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(if region-only "in region " ""))
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t)
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helm-current-prefix-arg
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(when region-only (region-beginning))
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(when region-only (region-end)))))
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(defvar helm-source-regexp
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(helm-build-in-buffer-source "Regexp Builder"
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:init (lambda ()
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(helm-init-candidates-in-buffer
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'global (with-temp-buffer
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(insert-buffer-substring helm-current-buffer)
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(buffer-string))))
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:get-line #'helm-regexp-get-line
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:persistent-action #'helm-regexp-persistent-action
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:persistent-help "Show this line"
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:multiline t
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:multimatch nil
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:requires-pattern 2
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:group 'helm-regexp
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:mode-line "Press TAB to select action."
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:action '(("Kill Regexp as sexp" . helm-kill-regexp-as-sexp)
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("Query Replace Regexp (C-u Not inside word.)"
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. helm-query-replace-regexp)
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("Kill Regexp" . helm-kill-regexp))))
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(defun helm-regexp-get-line (s e)
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(let ((matches (match-data))
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(line (buffer-substring s e)))
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(propertize
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(cl-loop with ln = (format "%5d: %s" (1- (line-number-at-pos s)) line)
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for i from 0 to (1- (/ (length matches) 2))
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if (match-string i)
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concat (format "\n%s%s'%s'"
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(make-string 10 ? ) (format "Group %d: " i) it)
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into ln1
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finally return (concat ln ln1))
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'helm-realvalue s)))
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(defun helm-regexp-persistent-action (pt)
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(helm-goto-char pt)
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(helm-highlight-current-line))
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(defun helm-regexp-kill-new (input)
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(kill-new (substring-no-properties input))
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(message "Killed: %s" input))
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;;; Predefined commands
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;;
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;;
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;;;###autoload
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(defun helm-regexp ()
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"Preconfigured helm to build regexps.
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`query-replace-regexp' can be run from there against found regexp."
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(interactive)
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(save-restriction
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(when (and (helm-region-active-p)
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;; Don't narrow to region if buffer is already narrowed.
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(not (helm-current-buffer-narrowed-p (current-buffer))))
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(narrow-to-region (region-beginning) (region-end)))
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(helm :sources helm-source-regexp
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:buffer "*helm regexp*"
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:prompt "Regexp: "
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:history 'helm-build-regexp-history)))
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(provide 'helm-regexp)
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;;; helm-regexp.el ends here
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