mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-28 07:45:00 +00:00
6d1c1fca0a
There's no need to call 'get-buffer', since 'with-current-buffer' does that internally. * lisp/calendar/todo-mode.el (todo-merge-category): * lisp/comint.el (comint-dynamic-list-completions): * lisp/emacs-lisp/checkdoc.el (checkdoc-error): * lisp/emacs-lisp/debug.el (debug, debugger-record-expression): * lisp/emacs-lisp/eieio-opt.el (eieio-browse): * lisp/emacs-lisp/re-builder.el (reb-restart-font-lock): * lisp/erc/erc-dcc.el (erc-dcc-do-LIST-command): * lisp/eshell/em-unix.el (eshell-poor-mans-grep): * lisp/gnus/gnus-group.el (gnus-add-mark): * lisp/net/eww.el (eww-next-bookmark, eww-previous-bookmark): * lisp/net/sieve.el (sieve-upload): * lisp/net/tramp-cmds.el (tramp-cleanup-some-buffers): * lisp/obsolete/quickurl.el (quickurl-list-populate-buffer): * lisp/org/ob-calc.el: (org-babel-execute:calc): * lisp/org/org-agenda.el (org-agenda-use-sticky-p): * lisp/pcomplete.el (pcomplete-show-completions): * lisp/progmodes/bug-reference.el (bug-reference--try-setup-gnus-article): * lisp/progmodes/idlw-help.el (idlwave-highlight-linked-completions): * lisp/progmodes/verilog-mode.el (verilog-preprocess): * lisp/replace.el (occur-1): * lisp/term.el (term-dynamic-list-completions): * lisp/time.el (world-clock-update): * lisp/url/url-cache.el (url-store-in-cache): * lisp/vc/vc-cvs.el (vc-cvs-merge, vc-cvs-merge-news): * lisp/vc/vc-rcs.el (vc-rcs-system-release): * lisp/vc/vc-svn.el (vc-svn-merge, vc-svn-merge-news): * test/lisp/calendar/icalendar-tests.el (icalendar-tests--get-error-string-for-export): * test/lisp/erc/erc-dcc-tests.el (pcomplete/erc-mode/DCC--get-1flag) (pcomplete/erc-mode/DCC--get-2flags) (pcomplete/erc-mode/DCC--get-2flags-reverse): * test/lisp/erc/erc-networks-tests.el (erc-networks--rename-server-buffer--existing--noreuse): * test/lisp/erc/erc-scenarios-services-misc.el (erc-scenarios-services-misc--reconnect-retry-nick): * test/lisp/erc/erc-tests.el (erc--refresh-prompt): Replace (with-current-buffer (get-buffer ...) ...) with (with-current-buffer ...).
847 lines
30 KiB
EmacsLisp
847 lines
30 KiB
EmacsLisp
;;; re-builder.el --- building Regexps with visual feedback -*- lexical-binding: t -*-
|
|
|
|
;; Copyright (C) 1999-2024 Free Software Foundation, Inc.
|
|
|
|
;; Author: Detlev Zundel <dzu@gnu.org>
|
|
;; Keywords: matching, lisp, tools
|
|
|
|
;; 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 <https://www.gnu.org/licenses/>.
|
|
|
|
;;; Commentary:
|
|
|
|
;; When I have to come up with regular expressions that are more
|
|
;; complex than simple string matchers, especially if they contain sub
|
|
;; expressions, I find myself spending quite some time in the
|
|
;; `development cycle'. `re-builder' aims to shorten this time span
|
|
;; so I can get on with the more interesting bits.
|
|
|
|
;; With it you can have immediate visual feedback about how well the
|
|
;; regexp behaves to your expectations on the intended data.
|
|
|
|
;; When called up `re-builder' attaches itself to the current buffer
|
|
;; which becomes its target buffer, where all the matching is done.
|
|
;; The active window is split so you have a view on the data while
|
|
;; authoring the RE. If the edited expression is valid the matches in
|
|
;; the target buffer are marked automatically with colored overlays
|
|
;; (for non-color displays see below) giving you feedback over the
|
|
;; extents of the matched (sub) expressions. The (non-)validity is
|
|
;; shown only in the mode line without throwing the errors at you. If
|
|
;; you want to know the reason why RE Builder considers it as invalid
|
|
;; call `reb-force-update' ("\C-c\C-u") which should reveal the error.
|
|
|
|
;; The target buffer can be changed with `reb-change-target-buffer'
|
|
;; ("\C-c\C-b"). Changing the target buffer automatically removes
|
|
;; the overlays from the old buffer and displays the new one in the
|
|
;; target window.
|
|
|
|
;; The `re-builder' keeps the focus while updating the matches in the
|
|
;; target buffer so corrections are easy to incorporate. If you are
|
|
;; satisfied with the result you can paste the RE to the kill-ring
|
|
;; with `reb-copy' ("\C-c\C-w"), quit the `re-builder' ("\C-c\C-q")
|
|
;; and use it wherever you need it.
|
|
|
|
;; As the automatic updates can take some time on large buffers, they
|
|
;; can be limited by `reb-auto-match-limit' so that they should not
|
|
;; have a negative impact on the editing. Setting it to nil makes
|
|
;; even the auto updates go all the way. Forcing an update overrides
|
|
;; this limit allowing an easy way to see all matches.
|
|
|
|
;; Currently `re-builder' understands three different forms of input,
|
|
;; namely `read', `string', and `rx' syntax. Read
|
|
;; syntax and string syntax are both delimited by `"'s and behave
|
|
;; according to their name. With the `string' syntax there's no need
|
|
;; to escape the backslashes and double quotes simplifying the editing
|
|
;; somewhat. The `rx' syntax allows editing of symbolic regular
|
|
;; expressions supported by the package of the same name.
|
|
|
|
;; Editing symbolic expressions is done through a major mode derived
|
|
;; from `emacs-lisp-mode' so you'll get all the good stuff like
|
|
;; automatic indentation and font-locking etc.
|
|
|
|
;; When editing a symbolic regular expression, only the first
|
|
;; expression in the RE Builder buffer is considered, which helps
|
|
;; limiting the extent of the expression like the `"'s do for the text
|
|
;; modes. For the `rx' syntax the function `rx-to-string' is applied to
|
|
;; the evaluated expression read. So you can use quoted arguments
|
|
;; with something like '("findme") or you can construct arguments to
|
|
;; your hearts delight with a valid ELisp expression. (The compiled
|
|
;; string form will be copied by `reb-copy') If you want to take
|
|
;; a glance at the corresponding string you can temporarily change the
|
|
;; input syntax.
|
|
|
|
;; Changing the input syntax is transparent (for the obvious exception
|
|
;; non-symbolic -> symbolic) so you can change your mind as often as
|
|
;; you like.
|
|
|
|
;; There is also a shortcut function for toggling the
|
|
;; `case-fold-search' variable in the target buffer with an immediate
|
|
;; update.
|
|
|
|
|
|
;; Q: But what if my display cannot show colored overlays?
|
|
;; A: Then the cursor will flash around the matched text making it stand
|
|
;; out.
|
|
|
|
;; Q: But how can I then make out the sub-expressions?
|
|
;; A: That's where the `sub-expression mode' comes in. In it only the
|
|
;; digit keys are assigned to perform an update that will flash the
|
|
;; corresponding subexp only.
|
|
|
|
|
|
;;; Code:
|
|
|
|
;; User customizable variables
|
|
(defgroup re-builder nil
|
|
"Options for the RE Builder."
|
|
:group 'lisp
|
|
:prefix "reb-")
|
|
|
|
(defcustom reb-blink-delay 0.5
|
|
"Seconds to blink cursor for next/previous match in RE Builder."
|
|
:group 're-builder
|
|
:type 'number)
|
|
|
|
(defcustom reb-mode-hook nil
|
|
"Hooks to run on entering RE Builder mode."
|
|
:group 're-builder
|
|
:type 'hook)
|
|
|
|
(defcustom reb-re-syntax 'read
|
|
"Syntax for the REs in the RE Builder.
|
|
Can either be `read', `string', or `rx'."
|
|
:group 're-builder
|
|
:type '(choice (const :tag "Read syntax" read)
|
|
(const :tag "String syntax" string)
|
|
(const :tag "`rx' syntax" rx)))
|
|
|
|
(defcustom reb-auto-match-limit 200
|
|
"Positive integer limiting the matches for RE Builder auto updates.
|
|
Set it to nil if you don't want limits here."
|
|
:group 're-builder
|
|
:type '(restricted-sexp :match-alternatives
|
|
(integerp 'nil)))
|
|
|
|
|
|
(defface reb-match-0
|
|
'((((class color) (background light))
|
|
:background "lightblue")
|
|
(((class color) (background dark))
|
|
:background "steelblue4")
|
|
(t
|
|
:inverse-video t))
|
|
"Used for displaying the whole match."
|
|
:group 're-builder)
|
|
|
|
(defface reb-match-1
|
|
'((((class color) (background light))
|
|
:background "aquamarine")
|
|
(((class color) (background dark))
|
|
:background "blue3")
|
|
(t
|
|
:inverse-video t))
|
|
"Used for displaying the first matching subexpression."
|
|
:group 're-builder)
|
|
|
|
(defface reb-match-2
|
|
'((((class color) (background light))
|
|
:background "springgreen")
|
|
(((class color) (background dark))
|
|
:background "chartreuse4")
|
|
(t
|
|
:inverse-video t))
|
|
"Used for displaying the second matching subexpression."
|
|
:group 're-builder)
|
|
|
|
(defface reb-match-3
|
|
'((((min-colors 88) (class color) (background light))
|
|
:background "yellow1")
|
|
(((class color) (background light))
|
|
:background "yellow")
|
|
(((class color) (background dark))
|
|
:background "sienna4")
|
|
(t
|
|
:inverse-video t))
|
|
"Used for displaying the third matching subexpression."
|
|
:group 're-builder)
|
|
|
|
;; Internal variables below
|
|
(defvar reb-mode nil
|
|
"Enables the RE Builder minor mode.")
|
|
|
|
(defvar reb-target-buffer nil
|
|
"Buffer to which the RE is applied to.")
|
|
|
|
(defvar reb-target-window nil
|
|
"Window to which the RE is applied to.")
|
|
|
|
(defvar-local reb-regexp nil
|
|
"Last regexp used by RE Builder.")
|
|
|
|
(defvar-local reb-regexp-src nil
|
|
"Last regexp used by RE Builder before processing it.
|
|
Except for Lisp syntax this is the same as `reb-regexp'.")
|
|
|
|
(defvar-local reb-overlays nil
|
|
"List of overlays of the RE Builder.")
|
|
|
|
(defvar reb-window-config nil
|
|
"Old window configuration.")
|
|
|
|
(defvar reb-subexp-mode nil
|
|
"Indicates whether sub-exp mode is active.")
|
|
|
|
(defvar reb-subexp-displayed nil
|
|
"Indicates which sub-exp is active.")
|
|
|
|
(defvar reb-mode-string ""
|
|
"String in mode line for additional info.")
|
|
|
|
(defvar reb-valid-string ""
|
|
"String in mode line showing validity of RE.")
|
|
(put 'reb-valid-string 'risky-local-variable t)
|
|
|
|
(defconst reb-buffer "*RE-Builder*"
|
|
"Buffer to use for the RE Builder.")
|
|
|
|
;; Define the local "\C-c" keymap
|
|
(defvar-keymap reb-mode-map
|
|
:doc "Keymap used by the RE Builder."
|
|
"C-c C-c" #'reb-toggle-case
|
|
"C-c C-q" #'reb-quit
|
|
"C-c C-w" #'reb-copy
|
|
"C-c C-s" #'reb-next-match
|
|
"C-c C-r" #'reb-prev-match
|
|
"C-c C-i" #'reb-change-syntax
|
|
"C-c C-e" #'reb-enter-subexp-mode
|
|
"C-c C-b" #'reb-change-target-buffer
|
|
"C-c C-u" #'reb-force-update)
|
|
|
|
(easy-menu-define reb-mode-menu reb-mode-map
|
|
"Menu for the RE Builder."
|
|
'("Re-Builder"
|
|
["Copy current RE" reb-copy
|
|
:help "Copy current RE into the kill ring for later insertion"]
|
|
"---"
|
|
["Go to previous match" reb-prev-match
|
|
:help "Go to previous match in the RE Builder target window"]
|
|
["Go to next match" reb-next-match
|
|
:help "Go to next match in the RE Builder target window"]
|
|
["Force update" reb-force-update
|
|
:help "Force an update in the RE Builder target window without a match limit"]
|
|
["Enter subexpression mode" reb-enter-subexp-mode
|
|
:help "Enter the subexpression mode in the RE Builder"]
|
|
"---"
|
|
["Change syntax..." reb-change-syntax
|
|
:help "Change the syntax used by the RE Builder"]
|
|
["Change target buffer..." reb-change-target-buffer
|
|
:help "Change the target buffer and display it in the target window"]
|
|
["Case sensitive" reb-toggle-case
|
|
:style toggle
|
|
:selected (with-current-buffer reb-target-buffer
|
|
(null case-fold-search))
|
|
:help "Toggle case sensitivity of searches for RE Builder target buffer"]
|
|
"---"
|
|
["Quit" reb-quit
|
|
:help "Quit the RE Builder mode"]))
|
|
|
|
(define-derived-mode reb-mode nil "RE Builder"
|
|
"Major mode for interactively building Regular Expressions."
|
|
(setq-local blink-matching-paren nil)
|
|
(reb-mode-common))
|
|
|
|
(defvar-keymap reb-lisp-mode-map
|
|
;; Use the same "\C-c" keymap as `reb-mode' and use font-locking from
|
|
;; `emacs-lisp-mode'
|
|
"C-c" (keymap-lookup reb-mode-map "C-c"))
|
|
|
|
(define-derived-mode reb-lisp-mode
|
|
emacs-lisp-mode "RE Builder Lisp"
|
|
"Major mode for interactively building symbolic Regular Expressions."
|
|
;; Pull in packages as needed
|
|
(when (eq reb-re-syntax 'rx) ; rx-to-string is autoloaded
|
|
(require 'rx)) ; require rx anyway
|
|
(reb-mode-common))
|
|
|
|
(defvar-keymap reb-subexp-mode-map
|
|
:doc "Keymap used by the RE Builder for the subexpression mode."
|
|
:full t :suppress t
|
|
;; Again share the "\C-c" keymap for the commands
|
|
"C-c" (keymap-lookup reb-mode-map "C-c")
|
|
"q" #'reb-quit-subexp-mode
|
|
"0" #'reb-display-subexp
|
|
"1" #'reb-display-subexp
|
|
"2" #'reb-display-subexp
|
|
"3" #'reb-display-subexp
|
|
"4" #'reb-display-subexp
|
|
"5" #'reb-display-subexp
|
|
"6" #'reb-display-subexp
|
|
"7" #'reb-display-subexp
|
|
"8" #'reb-display-subexp
|
|
"9" #'reb-display-subexp)
|
|
|
|
(defun reb-mode-common ()
|
|
"Setup functions common to functions `reb-mode' and `reb-lisp-mode'."
|
|
|
|
(setq reb-mode-string ""
|
|
reb-valid-string ""
|
|
mode-line-buffer-identification
|
|
'(25 . ("%b" reb-mode-string reb-valid-string)))
|
|
(reb-update-modestring)
|
|
(add-hook 'after-change-functions 'reb-auto-update nil t)
|
|
;; At least make the overlays go away if the buffer is killed
|
|
(add-hook 'kill-buffer-hook 'reb-kill-buffer nil t)
|
|
(reb-auto-update nil nil nil))
|
|
|
|
(defun reb-color-display-p ()
|
|
"Return t if display is capable of displaying colors."
|
|
(eq 'color (frame-parameter nil 'display-type)))
|
|
|
|
(defun reb-lisp-syntax-p ()
|
|
"Return non-nil if RE Builder uses `rx' syntax."
|
|
(eq reb-re-syntax 'rx))
|
|
|
|
(defun reb-target-value (symbol)
|
|
"Return binding for SYMBOL in the RE Builder target buffer."
|
|
(buffer-local-value symbol reb-target-buffer))
|
|
|
|
(defun reb-initialize-buffer ()
|
|
"Initialize the current buffer as a RE Builder buffer."
|
|
(erase-buffer)
|
|
(reb-insert-regexp)
|
|
(goto-char (+ 2 (point-min)))
|
|
(cond ((reb-lisp-syntax-p)
|
|
(reb-lisp-mode))
|
|
(t (reb-mode)))
|
|
(reb-restart-font-lock)
|
|
;; When using `rx' syntax, the initial syntax () is invalid. But
|
|
;; don't signal an error in that case.
|
|
(ignore-errors
|
|
(reb-do-update)))
|
|
|
|
(defun reb-mode-buffer-p ()
|
|
"Return non-nil if the current buffer is a RE Builder buffer."
|
|
(memq major-mode '(reb-mode reb-lisp-mode)))
|
|
|
|
;;; This is to help people find this in Apropos.
|
|
;;;###autoload
|
|
(defalias 'regexp-builder 're-builder)
|
|
|
|
;;;###autoload
|
|
(defun re-builder ()
|
|
"Construct a regexp interactively.
|
|
This command makes the current buffer the \"target\" buffer of
|
|
the regexp builder. It displays a buffer named \"*RE-Builder*\"
|
|
in another window, initially containing an empty regexp.
|
|
|
|
As you edit the regexp in the \"*RE-Builder*\" buffer, the
|
|
matching parts of the target buffer will be highlighted.
|
|
|
|
Case-sensitivity can be toggled with \\[reb-toggle-case]. The
|
|
regexp builder supports three different forms of input which can
|
|
be set with \\[reb-change-syntax]. More options and details are
|
|
provided in the Commentary section of this library."
|
|
(interactive)
|
|
(if (and (string= (buffer-name) reb-buffer)
|
|
(reb-mode-buffer-p))
|
|
(message "Already in the RE Builder")
|
|
(when reb-target-buffer
|
|
(reb-delete-overlays))
|
|
(setq reb-target-buffer (current-buffer)
|
|
reb-target-window (selected-window))
|
|
(select-window
|
|
(or (get-buffer-window reb-buffer)
|
|
(let ((dir (if (window-parameter nil 'window-side)
|
|
'bottom 'down)))
|
|
(setq reb-window-config (current-window-configuration))
|
|
(display-buffer
|
|
(get-buffer-create reb-buffer)
|
|
`((display-buffer-in-direction)
|
|
(direction . ,dir)
|
|
(dedicated . t)
|
|
(window-height . fit-window-to-buffer))))))
|
|
(font-lock-mode 1)
|
|
(reb-initialize-buffer)))
|
|
|
|
(defun reb-change-target-buffer (buf)
|
|
"Change the target buffer and display it in the target window."
|
|
(interactive "bSet target buffer to: ")
|
|
(let ((buffer (get-buffer buf)))
|
|
(if (not buffer)
|
|
(error "No such buffer")
|
|
(reb-delete-overlays)
|
|
(setq reb-target-buffer buffer)
|
|
(reb-do-update
|
|
(if reb-subexp-mode reb-subexp-displayed nil))
|
|
(reb-update-modestring))))
|
|
|
|
(defun reb-force-update ()
|
|
"Force an update in the RE Builder target window without a match limit."
|
|
(interactive)
|
|
(let ((reb-auto-match-limit nil))
|
|
(reb-update-overlays
|
|
(if reb-subexp-mode reb-subexp-displayed nil))))
|
|
|
|
(defun reb-quit ()
|
|
"Quit the RE Builder mode."
|
|
(interactive)
|
|
(setq reb-subexp-mode nil
|
|
reb-subexp-displayed nil)
|
|
(reb-delete-overlays)
|
|
(bury-buffer)
|
|
(set-window-configuration reb-window-config))
|
|
|
|
(defun reb-next-match ()
|
|
"Go to next match in the RE Builder target window."
|
|
(interactive)
|
|
(reb-assert-buffer-in-window)
|
|
(with-selected-window reb-target-window
|
|
(if (not (re-search-forward reb-regexp (point-max) t))
|
|
(message "No more matches")
|
|
(reb-show-subexp
|
|
(or (and reb-subexp-mode reb-subexp-displayed) 0)
|
|
t))))
|
|
|
|
(defun reb-prev-match ()
|
|
"Go to previous match in the RE Builder target window."
|
|
(interactive)
|
|
(reb-assert-buffer-in-window)
|
|
(with-selected-window reb-target-window
|
|
(let ((p (point)))
|
|
(goto-char (1- p))
|
|
(if (re-search-backward reb-regexp (point-min) t)
|
|
(reb-show-subexp
|
|
(or (and reb-subexp-mode reb-subexp-displayed) 0)
|
|
t)
|
|
(goto-char p)
|
|
(message "No more matches")))))
|
|
|
|
(defun reb-toggle-case ()
|
|
"Toggle case sensitivity of searches for RE Builder target buffer."
|
|
(interactive)
|
|
(with-current-buffer reb-target-buffer
|
|
(setq case-fold-search (not case-fold-search)))
|
|
(reb-update-modestring)
|
|
(reb-auto-update nil nil nil t))
|
|
|
|
(defun reb-copy ()
|
|
"Copy current RE into the kill ring for later insertion."
|
|
(interactive)
|
|
(reb-update-regexp)
|
|
(let ((re (with-output-to-string
|
|
(print (reb-target-value 'reb-regexp)))))
|
|
(setq re (substring re 1 (1- (length re))))
|
|
(setq re (string-replace "\n" "\\n" re))
|
|
(kill-new re)
|
|
(message "Copied regexp `%s' to kill-ring" re)))
|
|
|
|
;; The subexpression mode is not electric because the number of
|
|
;; matches should be seen rather than a prompt.
|
|
(defun reb-enter-subexp-mode ()
|
|
"Enter the subexpression mode in the RE Builder."
|
|
(interactive)
|
|
(setq reb-subexp-mode t)
|
|
(reb-update-modestring)
|
|
(use-local-map reb-subexp-mode-map)
|
|
(message (substitute-command-keys
|
|
"\\`0'-\\`9' to display subexpressions \\`q' to quit subexp mode")))
|
|
|
|
(defun reb-show-subexp (subexp &optional pause)
|
|
"Visually show limit of subexpression SUBEXP of recent search.
|
|
On color displays this just puts point to the end of the expression as
|
|
the match should already be marked by an overlay.
|
|
On other displays jump to the beginning and the end of it.
|
|
If the optional PAUSE is non-nil then pause at the end in any case."
|
|
(with-selected-window reb-target-window
|
|
(unless (reb-color-display-p)
|
|
(goto-char (match-beginning subexp))
|
|
(sit-for reb-blink-delay))
|
|
(goto-char (match-end subexp))
|
|
(when (or (not (reb-color-display-p)) pause)
|
|
(sit-for reb-blink-delay))))
|
|
|
|
(defun reb-quit-subexp-mode ()
|
|
"Quit the subexpression mode in the RE Builder."
|
|
(interactive)
|
|
(setq reb-subexp-mode nil
|
|
reb-subexp-displayed nil)
|
|
(reb-update-modestring)
|
|
(use-local-map reb-mode-map)
|
|
(reb-do-update))
|
|
|
|
(defvar reb-change-syntax-hist nil)
|
|
|
|
(defun reb-change-syntax (&optional syntax)
|
|
"Change the syntax used by the RE Builder.
|
|
Optional argument SYNTAX must be specified if called non-interactively."
|
|
(interactive
|
|
(list (intern
|
|
(completing-read
|
|
(format-prompt "Select syntax" reb-re-syntax)
|
|
'(read string rx)
|
|
nil t nil nil (symbol-name reb-re-syntax)
|
|
'reb-change-syntax-hist))))
|
|
|
|
(if (memq syntax '(read string rx))
|
|
(let ((buffer (get-buffer reb-buffer)))
|
|
(setq reb-re-syntax syntax)
|
|
(when buffer
|
|
(with-current-buffer buffer
|
|
(reb-initialize-buffer))
|
|
(message "Switched syntax to `%s'" reb-re-syntax)))
|
|
(error "Invalid syntax: %s" syntax)))
|
|
|
|
|
|
;; Non-interactive functions below
|
|
(defun reb-do-update (&optional subexp)
|
|
"Update matches in the RE Builder target window.
|
|
If SUBEXP is non-nil mark only the corresponding sub-expressions."
|
|
(reb-assert-buffer-in-window)
|
|
(reb-update-regexp)
|
|
(reb-update-overlays subexp))
|
|
|
|
(defun reb-auto-update (_beg _end _lenold &optional force)
|
|
"Called from `after-change-functions' to update the display.
|
|
BEG, END and LENOLD are passed in from the hook.
|
|
An actual update is only done if the regexp has changed or if the
|
|
optional fourth argument FORCE is non-nil."
|
|
(let ((prev-valid reb-valid-string)
|
|
(new-valid
|
|
(condition-case err
|
|
(progn
|
|
(when (or (reb-update-regexp) force)
|
|
(reb-do-update))
|
|
"")
|
|
(error (propertize
|
|
(format " %s"
|
|
(if (and (consp (cdr err)) (stringp (cadr err)))
|
|
(format "%s: %s" (car err) (cadr err))
|
|
(car err)))
|
|
'face 'font-lock-warning-face)))))
|
|
(setq reb-valid-string new-valid)
|
|
(force-mode-line-update)
|
|
|
|
;; Through the caching of the re a change invalidating the syntax
|
|
;; for symbolic expressions will not delete the overlays so we
|
|
;; catch it here
|
|
(when (and (reb-lisp-syntax-p)
|
|
(not (string= prev-valid new-valid))
|
|
(string= prev-valid ""))
|
|
(reb-delete-overlays))))
|
|
|
|
(defun reb-delete-overlays ()
|
|
"Delete all RE Builder overlays in the `reb-target-buffer' buffer."
|
|
(when (buffer-live-p reb-target-buffer)
|
|
(with-current-buffer reb-target-buffer
|
|
(mapc 'delete-overlay reb-overlays)
|
|
(setq reb-overlays nil))))
|
|
|
|
(defun reb-assert-buffer-in-window ()
|
|
"Assert that `reb-target-buffer' is displayed in `reb-target-window'."
|
|
(if (not (eq reb-target-buffer (window-buffer reb-target-window)))
|
|
(set-window-buffer reb-target-window reb-target-buffer)))
|
|
|
|
(defun reb-update-modestring ()
|
|
"Update the variable `reb-mode-string' displayed in the mode line."
|
|
(setq reb-mode-string
|
|
(concat
|
|
(if reb-subexp-mode
|
|
(format " (subexp %s)" (or reb-subexp-displayed "-"))
|
|
"")
|
|
(if (not (reb-target-value 'case-fold-search))
|
|
" Case"
|
|
"")))
|
|
(force-mode-line-update))
|
|
|
|
(defun reb-display-subexp (&optional subexp)
|
|
"Highlight only subexpression SUBEXP in the RE Builder."
|
|
(interactive)
|
|
(setq reb-subexp-displayed
|
|
(or subexp (string-to-number (format "%c" last-command-event))))
|
|
(reb-update-modestring)
|
|
(reb-do-update reb-subexp-displayed))
|
|
|
|
(defun reb-kill-buffer ()
|
|
"When the RE Builder buffer is killed make sure no overlays stay around."
|
|
(when (reb-mode-buffer-p)
|
|
(reb-delete-overlays)))
|
|
|
|
|
|
;; The next functions are the interface between the regexp and
|
|
;; its textual representation in the RE Builder buffer.
|
|
;; They are the only functions concerned with the actual syntax
|
|
;; being used.
|
|
(defun reb-read-regexp ()
|
|
"Read current RE."
|
|
(save-excursion
|
|
(cond ((eq reb-re-syntax 'read)
|
|
(goto-char (point-min))
|
|
(read (current-buffer)))
|
|
((eq reb-re-syntax 'string)
|
|
(goto-char (point-min))
|
|
(re-search-forward "\"")
|
|
(let ((beg (point)))
|
|
(goto-char (point-max))
|
|
(re-search-backward "\"")
|
|
(buffer-substring-no-properties beg (point))))
|
|
((reb-lisp-syntax-p)
|
|
(buffer-string)))))
|
|
|
|
(defun reb-empty-regexp ()
|
|
"Return empty RE for current syntax."
|
|
(cond ((reb-lisp-syntax-p) "'()")
|
|
(t "")))
|
|
|
|
(defun reb-insert-regexp ()
|
|
"Insert current RE."
|
|
(let ((re (or (reb-target-value 'reb-regexp)
|
|
(reb-empty-regexp))))
|
|
(cond ((eq reb-re-syntax 'read)
|
|
(print re (current-buffer)))
|
|
((eq reb-re-syntax 'string)
|
|
(insert "\n\"" re "\""))
|
|
;; For the Lisp syntax we need the "source" of the regexp
|
|
((reb-lisp-syntax-p)
|
|
(insert (or (reb-target-value 'reb-regexp-src)
|
|
(reb-empty-regexp)))))))
|
|
|
|
(defun reb-cook-regexp (re)
|
|
"Return RE after processing it according to `reb-re-syntax'."
|
|
(if (eq reb-re-syntax 'rx)
|
|
(rx-to-string (eval (car (read-from-string re))))
|
|
re))
|
|
|
|
(defun reb-update-regexp ()
|
|
"Update the regexp for the target buffer.
|
|
Return t if the (cooked) expression changed."
|
|
(let* ((re-src (reb-read-regexp))
|
|
(re (reb-cook-regexp re-src)))
|
|
(with-current-buffer reb-target-buffer
|
|
(let ((oldre reb-regexp))
|
|
(prog1
|
|
(not (string= oldre re))
|
|
(setq reb-regexp re)
|
|
;; Update the source re for the Lisp formats.
|
|
(setq reb-regexp-src re-src))))))
|
|
|
|
|
|
;; And now the real core of the whole thing
|
|
(defun reb-count-subexps (re)
|
|
"Return number of sub-expressions in the regexp RE."
|
|
(let ((i 0) (beg 0))
|
|
(while (string-match "\\\\(" re beg)
|
|
(setq i (1+ i)
|
|
beg (match-end 0)))
|
|
i))
|
|
|
|
(defun reb-update-overlays (&optional subexp)
|
|
"Switch to `reb-target-buffer' and mark all matches of `reb-regexp'.
|
|
If SUBEXP is non-nil mark only the corresponding sub-expressions."
|
|
(let* ((re (reb-target-value 'reb-regexp))
|
|
(subexps (reb-count-subexps re))
|
|
(matches 0)
|
|
(submatches 0)
|
|
firstmatch
|
|
here
|
|
firstmatch-after-here)
|
|
(with-current-buffer reb-target-buffer
|
|
(setq here
|
|
(if reb-target-window
|
|
(with-selected-window reb-target-window (window-point))
|
|
(point)))
|
|
(reb-delete-overlays)
|
|
(goto-char (point-min))
|
|
(while (and (not (eobp))
|
|
(re-search-forward re (point-max) t)
|
|
(or (not reb-auto-match-limit)
|
|
(< matches reb-auto-match-limit)))
|
|
(when (and (= 0 (length (match-string 0)))
|
|
(not (eobp)))
|
|
(forward-char 1))
|
|
(let ((i 0)
|
|
suffix max-suffix)
|
|
(setq matches (1+ matches))
|
|
(while (<= i subexps)
|
|
(when (and (or (not subexp) (= subexp i))
|
|
(match-beginning i))
|
|
(let ((overlay (make-overlay (match-beginning i)
|
|
(match-end i)))
|
|
;; When we have exceeded the number of provided faces,
|
|
;; cycle thru them where `max-suffix' denotes the maximum
|
|
;; suffix for `reb-match-*' that has been defined and
|
|
;; `suffix' the suffix calculated for the current match.
|
|
(face
|
|
(cond
|
|
(max-suffix
|
|
(if (= suffix max-suffix)
|
|
(setq suffix 1)
|
|
(setq suffix (1+ suffix)))
|
|
(intern-soft (format "reb-match-%d" suffix)))
|
|
((intern-soft (format "reb-match-%d" i)))
|
|
((setq max-suffix (1- i))
|
|
(setq suffix 1)
|
|
;; `reb-match-1' must exist.
|
|
'reb-match-1))))
|
|
(unless firstmatch (setq firstmatch (match-data)))
|
|
(unless firstmatch-after-here
|
|
(when (> (point) here)
|
|
(setq firstmatch-after-here (match-data))))
|
|
(setq reb-overlays (cons overlay reb-overlays)
|
|
submatches (1+ submatches))
|
|
(overlay-put overlay 'face face)
|
|
(overlay-put overlay 'priority i)))
|
|
(setq i (1+ i))))))
|
|
(let ((count (if subexp submatches matches)))
|
|
(message "%s %smatch%s%s"
|
|
(if (= 0 count) "No" (int-to-string count))
|
|
(if subexp "subexpression " "")
|
|
(if (= 1 count) "" "es")
|
|
(if (and reb-auto-match-limit
|
|
(= reb-auto-match-limit count))
|
|
" (limit reached)" "")))
|
|
(when firstmatch
|
|
(store-match-data (or firstmatch-after-here firstmatch))
|
|
(reb-show-subexp (or subexp 0)))))
|
|
|
|
;; The End
|
|
(defun re-builder-unload-function ()
|
|
"Unload the RE Builder library."
|
|
(when (buffer-live-p (get-buffer reb-buffer))
|
|
(with-current-buffer reb-buffer
|
|
(remove-hook 'after-change-functions 'reb-auto-update t)
|
|
(remove-hook 'kill-buffer-hook 'reb-kill-buffer t)
|
|
(when (reb-mode-buffer-p)
|
|
(reb-delete-overlays))))
|
|
;; continue standard unloading
|
|
nil)
|
|
|
|
(defun reb-fontify-string-re (bound)
|
|
(catch 'found
|
|
;; The following loop is needed to continue searching after matches
|
|
;; that do not occur in strings. The associated regexp matches one
|
|
;; of `\\\\' `\\(' `\\(?:' `\\|' `\\)'. `\\\\' has been included to
|
|
;; avoid highlighting, for example, `\\(' in `\\\\('.
|
|
(when (memq reb-re-syntax '(read string))
|
|
(while (re-search-forward
|
|
(if (eq reb-re-syntax 'read)
|
|
;; Copied from font-lock.el
|
|
"\\(\\\\\\\\\\)\\(?:\\(\\\\\\\\\\)\\|\\((\\(?:\\?[0-9]*:\\)?\\|[|)]\\)\\)"
|
|
"\\(\\\\\\)\\(?:\\(\\\\\\)\\|\\((\\(?:\\?[0-9]*:\\)?\\|[|)]\\)\\)")
|
|
bound t)
|
|
(unless (match-beginning 2)
|
|
(let ((face (get-text-property (1- (point)) 'face)))
|
|
(when (or (and (listp face)
|
|
(memq 'font-lock-string-face face))
|
|
(eq 'font-lock-string-face face))
|
|
(throw 'found t))))))))
|
|
|
|
(defface reb-regexp-grouping-backslash
|
|
'((t :inherit font-lock-keyword-face :weight bold :underline t))
|
|
"Font Lock mode face for backslashes in Lisp regexp grouping constructs."
|
|
:group 're-builder)
|
|
|
|
(defface reb-regexp-grouping-construct
|
|
'((t :inherit font-lock-keyword-face :weight bold :underline t))
|
|
"Font Lock mode face used to highlight grouping constructs in Lisp regexps."
|
|
:group 're-builder)
|
|
|
|
(defconst reb-string-font-lock-keywords
|
|
(eval-when-compile
|
|
'(((reb-fontify-string-re
|
|
(1 'reb-regexp-grouping-backslash prepend)
|
|
(3 'reb-regexp-grouping-construct prepend))
|
|
(reb-mark-non-matching-parenthesis))
|
|
nil)))
|
|
|
|
(defsubst reb-while (limit current where)
|
|
(if (< current limit)
|
|
(1+ current)
|
|
(message "Reached (while limit=%s, where=%s)" limit where)
|
|
nil))
|
|
|
|
(defun reb-mark-non-matching-parenthesis (bound)
|
|
;; We have a small string, check the whole of it, but wait until
|
|
;; everything else is fontified.
|
|
(when (>= bound (point-max))
|
|
(let ((n-reb 0)
|
|
left-pars
|
|
faces-here)
|
|
(goto-char (point-min))
|
|
(while (and (setq n-reb (reb-while 100 n-reb "mark-par"))
|
|
(not (eobp)))
|
|
(skip-chars-forward "^()")
|
|
(unless (eobp)
|
|
(setq faces-here (get-text-property (point) 'face))
|
|
;; It is already fontified, use that info:
|
|
(when (or (eq 'reb-regexp-grouping-construct faces-here)
|
|
(and (listp faces-here)
|
|
(memq 'reb-regexp-grouping-construct faces-here)))
|
|
(cond ((eq (char-after) ?\()
|
|
(setq left-pars (cons (point) left-pars)))
|
|
((eq (char-after) ?\))
|
|
(if left-pars
|
|
(setq left-pars (cdr left-pars))
|
|
(put-text-property (point) (1+ (point))
|
|
'face 'font-lock-warning-face)))
|
|
(t (message "markpar: char-after=%s"
|
|
(char-to-string (char-after))))))
|
|
(forward-char)))
|
|
(dolist (lp left-pars)
|
|
(put-text-property lp (1+ lp)
|
|
'face 'font-lock-warning-face)))))
|
|
|
|
(require 'rx)
|
|
(defconst reb-rx-font-lock-keywords
|
|
(let ((constituents (mapcar #'symbol-name rx--builtin-forms))
|
|
(syntax (mapcar (lambda (rec) (symbol-name (car rec)))
|
|
rx--syntax-codes))
|
|
(categories (mapcar (lambda (rec)
|
|
(symbol-name (car rec)))
|
|
rx--categories)))
|
|
`(
|
|
(,(concat "(" (regexp-opt (list "rx-to-string") t) "[[:space:]]")
|
|
(1 font-lock-function-name-face))
|
|
(,(concat "(" (regexp-opt (list "rx") t) "[[:space:]]")
|
|
(1 font-lock-preprocessor-face))
|
|
(,(concat "(category[[:space:]]+" (regexp-opt categories t) ")")
|
|
(1 font-lock-variable-name-face))
|
|
(,(concat "(syntax[[:space:]]+" (regexp-opt syntax t) ")")
|
|
(1 font-lock-type-face))
|
|
(,(concat "(" (regexp-opt constituents t))
|
|
(1 font-lock-keyword-face))
|
|
)))
|
|
|
|
(defun reb-restart-font-lock ()
|
|
"Restart `font-lock-mode' to fit current regexp format."
|
|
(with-current-buffer reb-buffer
|
|
(let ((font-lock-is-on font-lock-mode))
|
|
(font-lock-mode -1)
|
|
(kill-local-variable 'font-lock-set-defaults)
|
|
;;(setq-local reb-re-syntax 'string)
|
|
;;(setq-local reb-re-syntax 'rx)
|
|
(setq font-lock-defaults
|
|
(cond
|
|
((memq reb-re-syntax '(read string))
|
|
reb-string-font-lock-keywords)
|
|
((eq reb-re-syntax 'rx)
|
|
'(reb-rx-font-lock-keywords
|
|
nil))
|
|
(t nil)))
|
|
(when font-lock-is-on (font-lock-mode 1)))))
|
|
|
|
(provide 're-builder)
|
|
|
|
;;; re-builder.el ends here
|