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884 lines
32 KiB
EmacsLisp
884 lines
32 KiB
EmacsLisp
;;; replace.el --- replace commands for Emacs.
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;; Copyright (C) 1985, 1986, 1987, 1992, 1994, 1996 Free Software Foundation, Inc.
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;; This file is part of GNU Emacs.
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;; GNU Emacs 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 2, or (at your option)
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;; any later version.
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;; GNU Emacs 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 GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Commentary:
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;; This package supplies the string and regular-expression replace functions
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;; documented in the Emacs user's manual.
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;;; Code:
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(defcustom case-replace t
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"*Non-nil means query-replace should preserve case in replacements."
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:type 'boolean
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:group 'matching)
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(defvar query-replace-history nil)
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(defvar query-replace-interactive nil
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"Non-nil means `query-replace' uses the last search string.
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That becomes the \"string to replace\".")
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(defun query-replace-read-args (string regexp-flag)
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(let (from to)
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(if query-replace-interactive
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(setq from (car (if regexp-flag regexp-search-ring search-ring)))
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(setq from (read-from-minibuffer (format "%s: " string)
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nil nil nil
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'query-replace-history nil t)))
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(setq to (read-from-minibuffer (format "%s %s with: " string from)
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nil nil nil
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'query-replace-history nil t))
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(list from to current-prefix-arg)))
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(defun query-replace (from-string to-string &optional arg)
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"Replace some occurrences of FROM-STRING with TO-STRING.
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As each match is found, the user must type a character saying
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what to do with it. For directions, type \\[help-command] at that time.
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In Transient Mark mode, if the mark is active, operate on the contents
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of the region. Otherwise, operate from point to the end of the buffer.
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If `query-replace-interactive' is non-nil, the last incremental search
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string is used as FROM-STRING--you don't have to specify it with the
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minibuffer.
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Preserves case in each replacement if `case-replace' and `case-fold-search'
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are non-nil and FROM-STRING has no uppercase letters.
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\(Preserving case means that if the string matched is all caps, or capitalized,
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then its replacement is upcased or capitalized.)
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Third arg DELIMITED (prefix arg if interactive), if non-nil, means replace
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only matches surrounded by word boundaries.
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To customize possible responses, change the \"bindings\" in `query-replace-map'."
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(interactive (query-replace-read-args "Query replace" nil))
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(perform-replace from-string to-string t nil arg))
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(define-key esc-map "%" 'query-replace)
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(defun query-replace-regexp (regexp to-string &optional arg)
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"Replace some things after point matching REGEXP with TO-STRING.
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As each match is found, the user must type a character saying
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what to do with it. For directions, type \\[help-command] at that time.
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In Transient Mark mode, if the mark is active, operate on the contents
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of the region. Otherwise, operate from point to the end of the buffer.
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If `query-replace-interactive' is non-nil, the last incremental search
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regexp is used as REGEXP--you don't have to specify it with the
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minibuffer.
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Preserves case in each replacement if `case-replace' and `case-fold-search'
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are non-nil and REGEXP has no uppercase letters.
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Third arg DELIMITED (prefix arg if interactive), if non-nil, means replace
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only matches surrounded by word boundaries.
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In TO-STRING, `\\&' stands for whatever matched the whole of REGEXP,
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and `\\=\\N' (where N is a digit) stands for
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whatever what matched the Nth `\\(...\\)' in REGEXP."
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(interactive (query-replace-read-args "Query replace regexp" t))
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(perform-replace regexp to-string t t arg))
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(defun map-query-replace-regexp (regexp to-strings &optional arg)
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"Replace some matches for REGEXP with various strings, in rotation.
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The second argument TO-STRINGS contains the replacement strings, separated
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by spaces. This command works like `query-replace-regexp' except
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that each successive replacement uses the next successive replacement string,
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wrapping around from the last such string to the first.
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In Transient Mark mode, if the mark is active, operate on the contents
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of the region. Otherwise, operate from point to the end of the buffer.
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Non-interactively, TO-STRINGS may be a list of replacement strings.
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If `query-replace-interactive' is non-nil, the last incremental search
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regexp is used as REGEXP--you don't have to specify it with the minibuffer.
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A prefix argument N says to use each replacement string N times
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before rotating to the next."
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(interactive
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(let (from to)
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(setq from (if query-replace-interactive
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(car regexp-search-ring)
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(read-from-minibuffer "Map query replace (regexp): "
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nil nil nil
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'query-replace-history nil t)))
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(setq to (read-from-minibuffer
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(format "Query replace %s with (space-separated strings): "
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from)
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nil nil nil
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'query-replace-history nil t))
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(list from to current-prefix-arg)))
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(let (replacements)
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(if (listp to-strings)
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(setq replacements to-strings)
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(while (/= (length to-strings) 0)
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(if (string-match " " to-strings)
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(setq replacements
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(append replacements
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(list (substring to-strings 0
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(string-match " " to-strings))))
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to-strings (substring to-strings
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(1+ (string-match " " to-strings))))
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(setq replacements (append replacements (list to-strings))
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to-strings ""))))
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(perform-replace regexp replacements t t nil arg)))
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(defun replace-string (from-string to-string &optional delimited)
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"Replace occurrences of FROM-STRING with TO-STRING.
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Preserve case in each match if `case-replace' and `case-fold-search'
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are non-nil and FROM-STRING has no uppercase letters.
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\(Preserving case means that if the string matched is all caps, or capitalized,
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then its replacement is upcased or capitalized.)
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In Transient Mark mode, if the mark is active, operate on the contents
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of the region. Otherwise, operate from point to the end of the buffer.
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Third arg DELIMITED (prefix arg if interactive), if non-nil, means replace
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only matches surrounded by word boundaries.
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If `query-replace-interactive' is non-nil, the last incremental search
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string is used as FROM-STRING--you don't have to specify it with the
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minibuffer.
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This function is usually the wrong thing to use in a Lisp program.
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What you probably want is a loop like this:
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(while (search-forward FROM-STRING nil t)
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(replace-match TO-STRING nil t))
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which will run faster and will not set the mark or print anything.
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\(You may need a more complex loop if FROM-STRING can match the null string
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and TO-STRING is also null.)"
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(interactive (query-replace-read-args "Replace string" nil))
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(perform-replace from-string to-string nil nil delimited))
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(defun replace-regexp (regexp to-string &optional delimited)
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"Replace things after point matching REGEXP with TO-STRING.
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Preserve case in each match if `case-replace' and `case-fold-search'
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are non-nil and REGEXP has no uppercase letters.
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Third arg DELIMITED (prefix arg if interactive), if non-nil, means replace
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only matches surrounded by word boundaries.
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In TO-STRING, `\\&' stands for whatever matched the whole of REGEXP,
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and `\\=\\N' (where N is a digit) stands for
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whatever what matched the Nth `\\(...\\)' in REGEXP.
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In Transient Mark mode, if the mark is active, operate on the contents
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of the region. Otherwise, operate from point to the end of the buffer.
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If `query-replace-interactive' is non-nil, the last incremental search
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regexp is used as REGEXP--you don't have to specify it with the minibuffer.
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This function is usually the wrong thing to use in a Lisp program.
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What you probably want is a loop like this:
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(while (re-search-forward REGEXP nil t)
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(replace-match TO-STRING nil nil))
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which will run faster and will not set the mark or print anything."
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(interactive (query-replace-read-args "Replace regexp" t))
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(perform-replace regexp to-string nil t delimited))
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(defvar regexp-history nil
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"History list for some commands that read regular expressions.")
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(defalias 'delete-non-matching-lines 'keep-lines)
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(defun keep-lines (regexp)
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"Delete all lines except those containing matches for REGEXP.
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A match split across lines preserves all the lines it lies in.
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Applies to all lines after point."
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(interactive (list (read-from-minibuffer
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"Keep lines (containing match for regexp): "
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nil nil nil 'regexp-history nil t)))
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(save-excursion
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(or (bolp) (forward-line 1))
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(let ((start (point)))
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(while (not (eobp))
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;; Start is first char not preserved by previous match.
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(if (not (re-search-forward regexp nil 'move))
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(delete-region start (point-max))
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(let ((end (save-excursion (goto-char (match-beginning 0))
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(beginning-of-line)
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(point))))
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;; Now end is first char preserved by the new match.
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(if (< start end)
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(delete-region start end))))
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(setq start (save-excursion (forward-line 1)
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(point)))
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;; If the match was empty, avoid matching again at same place.
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(and (not (eobp)) (= (match-beginning 0) (match-end 0))
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(forward-char 1))))))
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(defalias 'delete-matching-lines 'flush-lines)
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(defun flush-lines (regexp)
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"Delete lines containing matches for REGEXP.
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If a match is split across lines, all the lines it lies in are deleted.
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Applies to lines after point."
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(interactive (list (read-from-minibuffer
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"Flush lines (containing match for regexp): "
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nil nil nil 'regexp-history nil t)))
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(save-excursion
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(while (and (not (eobp))
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(re-search-forward regexp nil t))
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(delete-region (save-excursion (goto-char (match-beginning 0))
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(beginning-of-line)
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(point))
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(progn (forward-line 1) (point))))))
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(defalias 'count-matches 'how-many)
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(defun how-many (regexp)
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"Print number of matches for REGEXP following point."
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(interactive (list(read-from-minibuffer
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"How many matches for (regexp): "
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nil nil nil 'regexp-history nil t)))
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(let ((count 0) opoint)
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(save-excursion
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(while (and (not (eobp))
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(progn (setq opoint (point))
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(re-search-forward regexp nil t)))
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(if (= opoint (point))
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(forward-char 1)
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(setq count (1+ count))))
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(message "%d occurrences" count))))
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(defvar occur-mode-map ())
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(if occur-mode-map
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()
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(setq occur-mode-map (make-sparse-keymap))
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(define-key occur-mode-map [mouse-2] 'occur-mode-mouse-goto)
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(define-key occur-mode-map "\C-c\C-c" 'occur-mode-goto-occurrence)
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(define-key occur-mode-map "\C-m" 'occur-mode-goto-occurrence)
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(define-key occur-mode-map "\M-n" 'occur-next)
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(define-key occur-mode-map "\M-p" 'occur-prev)
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(define-key occur-mode-map "g" 'revert-buffer))
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(defvar occur-buffer nil
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"Name of buffer for last occur.")
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(defvar occur-nlines nil
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"Number of lines of context to show around matching line.")
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(defvar occur-command-arguments nil
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"Arguments that were given to `occur' when it made this buffer.")
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(put 'occur-mode 'mode-class 'special)
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(defun occur-mode ()
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"Major mode for output from \\[occur].
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\\<occur-mode-map>Move point to one of the items in this buffer, then use
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\\[occur-mode-goto-occurrence] to go to the occurrence that the item refers to.
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Alternatively, click \\[occur-mode-mouse-goto] on an item to go to it.
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\\{occur-mode-map}"
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(kill-all-local-variables)
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(use-local-map occur-mode-map)
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(setq major-mode 'occur-mode)
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(setq mode-name "Occur")
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(make-local-variable 'revert-buffer-function)
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(setq revert-buffer-function 'occur-revert-function)
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(make-local-variable 'occur-buffer)
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(make-local-variable 'occur-nlines)
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(make-local-variable 'occur-command-arguments)
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(run-hooks 'occur-mode-hook))
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;; Handle revert-buffer for *Occur* buffers.
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(defun occur-revert-function (ignore1 ignore2)
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(let ((args occur-command-arguments ))
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(save-excursion
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(set-buffer occur-buffer)
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(apply 'occur args))))
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(defun occur-mode-mouse-goto (event)
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"In Occur mode, go to the occurrence whose line you click on."
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(interactive "e")
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(let (buffer pos)
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(save-excursion
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(set-buffer (window-buffer (posn-window (event-end event))))
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(save-excursion
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(goto-char (posn-point (event-end event)))
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(setq pos (occur-mode-find-occurrence))
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(setq buffer occur-buffer)))
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(pop-to-buffer buffer)
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(goto-char (marker-position pos))))
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(defun occur-mode-find-occurrence ()
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(if (or (null occur-buffer)
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(null (buffer-name occur-buffer)))
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(progn
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(setq occur-buffer nil)
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(error "Buffer in which occurrences were found is deleted")))
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(let ((pos (get-text-property (point) 'occur)))
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(if (null pos)
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(error "No occurrence on this line")
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pos)))
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(defun occur-mode-goto-occurrence ()
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"Go to the occurrence the current line describes."
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(interactive)
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(let ((pos (occur-mode-find-occurrence)))
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(pop-to-buffer occur-buffer)
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(goto-char (marker-position pos))))
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(defun occur-next (&optional n)
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"Move to the Nth (default 1) next match in the *Occur* buffer."
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(interactive "p")
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(if (not n) (setq n 1))
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(let ((r))
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(while (> n 0)
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(if (get-text-property (point) 'occur-point)
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(forward-char 1))
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(setq r (next-single-property-change (point) 'occur-point))
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(if r
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(goto-char r)
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(error "no more matches"))
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(setq n (1- n)))))
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(defun occur-prev (&optional n)
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"Move to the Nth (default 1) previous match in the *Occur* buffer."
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(interactive "p")
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(if (not n) (setq n 1))
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(let ((r))
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(while (> n 0)
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(setq r (get-text-property (point) 'occur-point))
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(if r (forward-char -1))
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(setq r (previous-single-property-change (point) 'occur-point))
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(if r
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(goto-char (- r 1))
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(error "no earlier matches"))
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(setq n (1- n)))))
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(defcustom list-matching-lines-default-context-lines 0
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"*Default number of context lines to include around a `list-matching-lines'
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match. A negative number means to include that many lines before the match.
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A positive number means to include that many lines both before and after."
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:type 'integer
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:group 'matching)
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(defalias 'list-matching-lines 'occur)
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(defvar list-matching-lines-face 'bold
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"*Face used by M-x list-matching-lines to show the text that matches.
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If the value is nil, don't highlight the matching portions specially.")
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(defun occur (regexp &optional nlines)
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"Show all lines in the current buffer containing a match for REGEXP.
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If a match spreads across multiple lines, all those lines are shown.
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Each line is displayed with NLINES lines before and after, or -NLINES
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before if NLINES is negative.
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NLINES defaults to `list-matching-lines-default-context-lines'.
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Interactively it is the prefix arg.
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The lines are shown in a buffer named `*Occur*'.
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It serves as a menu to find any of the occurrences in this buffer.
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\\<occur-mode-map>\\[describe-mode] in that buffer will explain how.
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If REGEXP contains upper case characters (excluding those preceded by `\\'),
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the matching is case-sensitive."
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(interactive
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(list (let* ((default (car regexp-history))
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(input
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(read-from-minibuffer
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(if default
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(format "List lines matching regexp (default `%s'): "
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default)
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"List lines matching regexp: ")
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nil nil nil 'regexp-history nil t)))
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(if (string-equal input "")
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default
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(set-text-properties 0 (length input) nil input)
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input))
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current-prefix-arg))
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(let ((nlines (if nlines
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(prefix-numeric-value nlines)
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list-matching-lines-default-context-lines))
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(first t)
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;;flag to prevent printing separator for first match
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(occur-num-matches 0)
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(buffer (current-buffer))
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(dir default-directory)
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(linenum 1)
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(prevpos
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;;position of most recent match
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(point-min))
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(case-fold-search (and case-fold-search
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(isearch-no-upper-case-p regexp t)))
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(final-context-start
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;; Marker to the start of context immediately following
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;; the matched text in *Occur*.
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(make-marker)))
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;;; (save-excursion
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;;; (beginning-of-line)
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;;; (setq linenum (1+ (count-lines (point-min) (point))))
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;;; (setq prevpos (point)))
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(save-excursion
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(goto-char (point-min))
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;; Check first whether there are any matches at all.
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(if (not (re-search-forward regexp nil t))
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(message "No matches for `%s'" regexp)
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;; Back up, so the search loop below will find the first match.
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(goto-char (match-beginning 0))
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(with-output-to-temp-buffer "*Occur*"
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(save-excursion
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(set-buffer standard-output)
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(setq default-directory dir)
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;; We will insert the number of lines, and "lines", later.
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(insert " matching ")
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(let ((print-escape-newlines t))
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(prin1 regexp))
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(insert " in buffer " (buffer-name buffer) ?. ?\n)
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(occur-mode)
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(setq occur-buffer buffer)
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(setq occur-nlines nlines)
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(setq occur-command-arguments
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(list regexp nlines)))
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(if (eq buffer standard-output)
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(goto-char (point-max)))
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(save-excursion
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;; Find next match, but give up if prev match was at end of buffer.
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(while (and (not (= prevpos (point-max)))
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(re-search-forward regexp nil t))
|
||
(goto-char (match-beginning 0))
|
||
(beginning-of-line)
|
||
(save-match-data
|
||
(setq linenum (+ linenum (count-lines prevpos (point)))))
|
||
(setq prevpos (point))
|
||
(goto-char (match-end 0))
|
||
(let* ((start
|
||
;;start point of text in source buffer to be put
|
||
;;into *Occur*
|
||
(save-excursion
|
||
(goto-char (match-beginning 0))
|
||
(forward-line (if (< nlines 0)
|
||
nlines
|
||
(- nlines)))
|
||
(point)))
|
||
(end
|
||
;; end point of text in source buffer to be put
|
||
;; into *Occur*
|
||
(save-excursion
|
||
(goto-char (match-end 0))
|
||
(if (> nlines 0)
|
||
(forward-line (1+ nlines))
|
||
(forward-line 1))
|
||
(point)))
|
||
(match-beg
|
||
;; Amount of context before matching text
|
||
(- (match-beginning 0) start))
|
||
(match-len
|
||
;; Length of matching text
|
||
(- (match-end 0) (match-beginning 0)))
|
||
(tag (format "%5d" linenum))
|
||
(empty (make-string (length tag) ?\ ))
|
||
tem
|
||
;; Number of lines of context to show for current match.
|
||
occur-marker
|
||
;; Marker pointing to end of match in source buffer.
|
||
(text-beg
|
||
;; Marker pointing to start of text for one
|
||
;; match in *Occur*.
|
||
(make-marker))
|
||
(text-end
|
||
;; Marker pointing to end of text for one match
|
||
;; in *Occur*.
|
||
(make-marker))
|
||
)
|
||
(save-excursion
|
||
(setq occur-marker (make-marker))
|
||
(set-marker occur-marker (point))
|
||
(set-buffer standard-output)
|
||
(setq occur-num-matches (1+ occur-num-matches))
|
||
(or first (zerop nlines)
|
||
(insert "--------\n"))
|
||
(setq first nil)
|
||
|
||
;; Insert matching text including context lines from
|
||
;; source buffer into *Occur*
|
||
(set-marker text-beg (point))
|
||
(insert-buffer-substring buffer start end)
|
||
(set-marker text-end (point))
|
||
|
||
;; Highlight text that was matched.
|
||
(if list-matching-lines-face
|
||
(put-text-property
|
||
(+ (marker-position text-beg) match-beg)
|
||
(+ (marker-position text-beg) match-beg match-len)
|
||
'face list-matching-lines-face))
|
||
|
||
;; `occur-point' property is used by occur-next and
|
||
;; occur-prev to move between matching lines.
|
||
(put-text-property
|
||
(+ (marker-position text-beg) match-beg match-len)
|
||
(+ (marker-position text-beg) match-beg match-len 1)
|
||
'occur-point t)
|
||
(set-marker final-context-start
|
||
(- (point) (- end (match-end 0))))
|
||
|
||
;; Now go back to the start of the matching text
|
||
;; adding the space and colon to the start of each line.
|
||
(goto-char (- (point) (- end start)))
|
||
;; Insert space and colon for lines of context before match.
|
||
(setq tem (if (< linenum nlines)
|
||
(- nlines linenum)
|
||
nlines))
|
||
(while (> tem 0)
|
||
(insert empty ?:)
|
||
(forward-line 1)
|
||
(setq tem (1- tem)))
|
||
|
||
;; Insert line number and colon for the lines of
|
||
;; matching text.
|
||
(let ((this-linenum linenum))
|
||
(while (< (point) final-context-start)
|
||
(if (null tag)
|
||
(setq tag (format "%5d" this-linenum)))
|
||
(insert tag ?:)
|
||
(forward-line 1)
|
||
(setq tag nil)
|
||
(setq this-linenum (1+ this-linenum)))
|
||
(while (<= (point) final-context-start)
|
||
(insert empty ?:)
|
||
(forward-line 1)
|
||
(setq this-linenum (1+ this-linenum))))
|
||
|
||
;; Insert space and colon for lines of context after match.
|
||
(while (and (< (point) (point-max)) (< tem nlines))
|
||
(insert empty ?:)
|
||
(forward-line 1)
|
||
(setq tem (1+ tem)))
|
||
|
||
;; Add text properties. The `occur' prop is used to
|
||
;; store the marker of the matching text in the
|
||
;; source buffer.
|
||
(put-text-property (marker-position text-beg)
|
||
(- (marker-position text-end) 1)
|
||
'mouse-face 'highlight)
|
||
(put-text-property (marker-position text-beg)
|
||
(marker-position text-end)
|
||
'occur occur-marker)
|
||
(goto-char (point-max)))
|
||
(forward-line 1)))
|
||
(set-buffer standard-output)
|
||
;; Go back to top of *Occur* and finish off by printing the
|
||
;; number of matching lines.
|
||
(goto-char (point-min))
|
||
(let ((message-string
|
||
(if (= occur-num-matches 1)
|
||
"1 line"
|
||
(format "%d lines" occur-num-matches))))
|
||
(insert message-string)
|
||
(if (interactive-p)
|
||
(message "%s matched" message-string)))))))))
|
||
|
||
;; It would be nice to use \\[...], but there is no reasonable way
|
||
;; to make that display both SPC and Y.
|
||
(defconst query-replace-help
|
||
"Type Space or `y' to replace one match, Delete or `n' to skip to next,
|
||
RET or `q' to exit, Period to replace one match and exit,
|
||
Comma to replace but not move point immediately,
|
||
C-r to enter recursive edit (\\[exit-recursive-edit] to get out again),
|
||
C-w to delete match and recursive edit,
|
||
C-l to clear the screen, redisplay, and offer same replacement again,
|
||
! to replace all remaining matches with no more questions,
|
||
^ to move point back to previous match."
|
||
"Help message while in query-replace")
|
||
|
||
(defvar query-replace-map (make-sparse-keymap)
|
||
"Keymap that defines the responses to questions in `query-replace'.
|
||
The \"bindings\" in this map are not commands; they are answers.
|
||
The valid answers include `act', `skip', `act-and-show',
|
||
`exit', `act-and-exit', `edit', `delete-and-edit', `recenter',
|
||
`automatic', `backup', `exit-prefix', and `help'.")
|
||
|
||
(define-key query-replace-map " " 'act)
|
||
(define-key query-replace-map "\d" 'skip)
|
||
(define-key query-replace-map [delete] 'skip)
|
||
(define-key query-replace-map [backspace] 'skip)
|
||
(define-key query-replace-map "y" 'act)
|
||
(define-key query-replace-map "n" 'skip)
|
||
(define-key query-replace-map "Y" 'act)
|
||
(define-key query-replace-map "N" 'skip)
|
||
(define-key query-replace-map "," 'act-and-show)
|
||
(define-key query-replace-map "q" 'exit)
|
||
(define-key query-replace-map "\r" 'exit)
|
||
(define-key query-replace-map [return] 'exit)
|
||
(define-key query-replace-map "." 'act-and-exit)
|
||
(define-key query-replace-map "\C-r" 'edit)
|
||
(define-key query-replace-map "\C-w" 'delete-and-edit)
|
||
(define-key query-replace-map "\C-l" 'recenter)
|
||
(define-key query-replace-map "!" 'automatic)
|
||
(define-key query-replace-map "^" 'backup)
|
||
(define-key query-replace-map "\C-h" 'help)
|
||
(define-key query-replace-map [f1] 'help)
|
||
(define-key query-replace-map [help] 'help)
|
||
(define-key query-replace-map "?" 'help)
|
||
(define-key query-replace-map "\C-g" 'quit)
|
||
(define-key query-replace-map "\C-]" 'quit)
|
||
(define-key query-replace-map "\e" 'exit-prefix)
|
||
(define-key query-replace-map [escape] 'exit-prefix)
|
||
|
||
(defun perform-replace (from-string replacements
|
||
query-flag regexp-flag delimited-flag
|
||
&optional repeat-count map)
|
||
"Subroutine of `query-replace'. Its complexity handles interactive queries.
|
||
Don't use this in your own program unless you want to query and set the mark
|
||
just as `query-replace' does. Instead, write a simple loop like this:
|
||
(while (re-search-forward \"foo[ \t]+bar\" nil t)
|
||
(replace-match \"foobar\" nil nil))
|
||
which will run faster and probably do exactly what you want."
|
||
(or map (setq map query-replace-map))
|
||
(and query-flag minibuffer-auto-raise
|
||
(raise-frame (window-frame (minibuffer-window))))
|
||
(let ((nocasify (not (and case-fold-search case-replace
|
||
(string-equal from-string
|
||
(downcase from-string)))))
|
||
(literal (not regexp-flag))
|
||
(search-function (if regexp-flag 're-search-forward 'search-forward))
|
||
(search-string from-string)
|
||
(real-match-data nil) ; the match data for the current match
|
||
(next-replacement nil)
|
||
(replacement-index 0)
|
||
(keep-going t)
|
||
(stack nil)
|
||
(next-rotate-count 0)
|
||
(replace-count 0)
|
||
(nonempty-match nil)
|
||
|
||
;; If non-nil, it is marker saying where in the buffer to stop.
|
||
(limit nil)
|
||
|
||
;; Data for the next match. If a cons, it has the same format as
|
||
;; (match-data); otherwise it is t if a match is possible at point.
|
||
(match-again t)
|
||
|
||
(message
|
||
(if query-flag
|
||
(substitute-command-keys
|
||
"Query replacing %s with %s: (\\<query-replace-map>\\[help] for help) "))))
|
||
|
||
;; If region is active, in Transient Mark mode, operate on region.
|
||
(if (and transient-mark-mode mark-active)
|
||
(progn
|
||
(setq limit (copy-marker (region-end)))
|
||
(goto-char (region-beginning))
|
||
(deactivate-mark)))
|
||
(if (stringp replacements)
|
||
(setq next-replacement replacements)
|
||
(or repeat-count (setq repeat-count 1)))
|
||
(if delimited-flag
|
||
(setq search-function 're-search-forward
|
||
search-string (concat "\\b"
|
||
(if regexp-flag from-string
|
||
(regexp-quote from-string))
|
||
"\\b")))
|
||
(push-mark)
|
||
(undo-boundary)
|
||
(unwind-protect
|
||
;; Loop finding occurrences that perhaps should be replaced.
|
||
(while (and keep-going
|
||
(not (eobp))
|
||
;; Use the next match if it is already known;
|
||
;; otherwise, search for a match after moving forward
|
||
;; one char if progress is required.
|
||
(setq real-match-data
|
||
(if (consp match-again)
|
||
(progn (goto-char (nth 1 match-again))
|
||
match-again)
|
||
(and (or match-again
|
||
(progn
|
||
(forward-char 1)
|
||
(not (eobp))))
|
||
(funcall search-function search-string limit t)
|
||
;; For speed, use only integers and
|
||
;; reuse the list used last time.
|
||
(match-data t real-match-data)))))
|
||
|
||
;; Record whether the match is nonempty, to avoid an infinite loop
|
||
;; repeatedly matching the same empty string.
|
||
(setq nonempty-match
|
||
(/= (nth 0 real-match-data) (nth 1 real-match-data)))
|
||
|
||
;; If the match is empty, record that the next one can't be adjacent.
|
||
;; Otherwise, if matching a regular expression, do the next
|
||
;; match now, since the replacement for this match may
|
||
;; affect whether the next match is adjacent to this one.
|
||
(setq match-again
|
||
(and nonempty-match
|
||
(or (not regexp-flag)
|
||
(and (looking-at search-string)
|
||
(match-data)))))
|
||
|
||
;; If time for a change, advance to next replacement string.
|
||
(if (and (listp replacements)
|
||
(= next-rotate-count replace-count))
|
||
(progn
|
||
(setq next-rotate-count
|
||
(+ next-rotate-count repeat-count))
|
||
(setq next-replacement (nth replacement-index replacements))
|
||
(setq replacement-index (% (1+ replacement-index) (length replacements)))))
|
||
(if (not query-flag)
|
||
(progn
|
||
(store-match-data real-match-data)
|
||
(replace-match next-replacement nocasify literal)
|
||
(setq replace-count (1+ replace-count)))
|
||
(undo-boundary)
|
||
(let (done replaced key def)
|
||
;; Loop reading commands until one of them sets done,
|
||
;; which means it has finished handling this occurrence.
|
||
(while (not done)
|
||
(store-match-data real-match-data)
|
||
(replace-highlight (match-beginning 0) (match-end 0))
|
||
;; Bind message-log-max so we don't fill up the message log
|
||
;; with a bunch of identical messages.
|
||
(let ((message-log-max nil))
|
||
(message message from-string next-replacement))
|
||
(setq key (read-event))
|
||
;; Necessary in case something happens during read-event
|
||
;; that clobbers the match data.
|
||
(store-match-data real-match-data)
|
||
(setq key (vector key))
|
||
(setq def (lookup-key map key))
|
||
;; Restore the match data while we process the command.
|
||
(cond ((eq def 'help)
|
||
(with-output-to-temp-buffer "*Help*"
|
||
(princ
|
||
(concat "Query replacing "
|
||
(if regexp-flag "regexp " "")
|
||
from-string " with "
|
||
next-replacement ".\n\n"
|
||
(substitute-command-keys
|
||
query-replace-help)))
|
||
(save-excursion
|
||
(set-buffer standard-output)
|
||
(help-mode))))
|
||
((eq def 'exit)
|
||
(setq keep-going nil)
|
||
(setq done t))
|
||
((eq def 'backup)
|
||
(if stack
|
||
(let ((elt (car stack)))
|
||
(goto-char (car elt))
|
||
(setq replaced (eq t (cdr elt)))
|
||
(or replaced
|
||
(store-match-data (cdr elt)))
|
||
(setq stack (cdr stack)))
|
||
(message "No previous match")
|
||
(ding 'no-terminate)
|
||
(sit-for 1)))
|
||
((eq def 'act)
|
||
(or replaced
|
||
(progn
|
||
(replace-match next-replacement nocasify literal)
|
||
(setq replace-count (1+ replace-count))))
|
||
(setq done t replaced t))
|
||
((eq def 'act-and-exit)
|
||
(or replaced
|
||
(progn
|
||
(replace-match next-replacement nocasify literal)
|
||
(setq replace-count (1+ replace-count))))
|
||
(setq keep-going nil)
|
||
(setq done t replaced t))
|
||
((eq def 'act-and-show)
|
||
(if (not replaced)
|
||
(progn
|
||
(replace-match next-replacement nocasify literal)
|
||
(setq replace-count (1+ replace-count))
|
||
(setq replaced t))))
|
||
((eq def 'automatic)
|
||
(or replaced
|
||
(progn
|
||
(replace-match next-replacement nocasify literal)
|
||
(setq replace-count (1+ replace-count))))
|
||
(setq done t query-flag nil replaced t))
|
||
((eq def 'skip)
|
||
(setq done t))
|
||
((eq def 'recenter)
|
||
(recenter nil))
|
||
((eq def 'edit)
|
||
(store-match-data
|
||
(prog1 (match-data)
|
||
(save-excursion (recursive-edit))))
|
||
;; Before we make the replacement,
|
||
;; decide whether the search string
|
||
;; can match again just after this match.
|
||
(if (and regexp-flag nonempty-match)
|
||
(setq match-again (and (looking-at search-string)
|
||
(match-data)))))
|
||
((eq def 'delete-and-edit)
|
||
(delete-region (match-beginning 0) (match-end 0))
|
||
(store-match-data
|
||
(prog1 (match-data)
|
||
(save-excursion (recursive-edit))))
|
||
(setq replaced t))
|
||
;; Note: we do not need to treat `exit-prefix'
|
||
;; specially here, since we reread
|
||
;; any unrecognized character.
|
||
(t
|
||
(setq this-command 'mode-exited)
|
||
(setq keep-going nil)
|
||
(setq unread-command-events
|
||
(append (listify-key-sequence key)
|
||
unread-command-events))
|
||
(setq done t))))
|
||
;; Record previous position for ^ when we move on.
|
||
;; Change markers to numbers in the match data
|
||
;; since lots of markers slow down editing.
|
||
(setq stack
|
||
(cons (cons (point)
|
||
(or replaced (match-data t)))
|
||
stack)))))
|
||
(replace-dehighlight))
|
||
(or unread-command-events
|
||
(message "Replaced %d occurrence%s"
|
||
replace-count
|
||
(if (= replace-count 1) "" "s")))
|
||
(and keep-going stack)))
|
||
|
||
(defcustom query-replace-highlight t
|
||
"*Non-nil means to highlight words during query replacement."
|
||
:type 'boolean
|
||
:group 'matching)
|
||
|
||
(defvar replace-overlay nil)
|
||
|
||
(defun replace-dehighlight ()
|
||
(and replace-overlay
|
||
(progn
|
||
(delete-overlay replace-overlay)
|
||
(setq replace-overlay nil))))
|
||
|
||
(defun replace-highlight (start end)
|
||
(and query-replace-highlight
|
||
(progn
|
||
(or replace-overlay
|
||
(progn
|
||
(setq replace-overlay (make-overlay start end))
|
||
(overlay-put replace-overlay 'face
|
||
(if (internal-find-face 'query-replace)
|
||
'query-replace 'region))))
|
||
(move-overlay replace-overlay start end (current-buffer)))))
|
||
|
||
;;; replace.el ends here
|