;;; Code:
+(eval-when-compile
+ (require 'cl))
+
(defcustom case-replace t
"*Non-nil means `query-replace' should preserve case in replacements."
:type 'boolean
map)
"Keymap for `occur-mode'.")
-
-(defvar occur-buffer nil
- "Name of buffer for last occur.")
-
-
-(defvar occur-nlines nil
- "Number of lines of context to show around matching line.")
-
-(defvar occur-command-arguments nil
- "Arguments that were given to `occur' when it made this buffer.")
+(defvar occur-revert-properties nil)
(put 'occur-mode 'mode-class 'special)
-
(defun occur-mode ()
"Major mode for output from \\[occur].
\\<occur-mode-map>Move point to one of the items in this buffer, then use
(setq major-mode 'occur-mode)
(setq mode-name "Occur")
(make-local-variable 'revert-buffer-function)
+ (set (make-local-variable 'font-lock-defaults)
+ '(nil t nil nil nil
+ (font-lock-fontify-region-function . occur-fontify-region-function)
+ (font-lock-unfontify-region-function . occur-unfontify-region-function)))
(setq revert-buffer-function 'occur-revert-function)
(set (make-local-variable 'revert-buffer-function) 'occur-revert-function)
- (make-local-variable 'occur-buffer)
- (make-local-variable 'occur-nlines)
- (make-local-variable 'occur-command-arguments)
+ (make-local-variable 'occur-revert-properties)
(run-hooks 'occur-mode-hook))
(defun occur-revert-function (ignore1 ignore2)
"Handle `revert-buffer' for *Occur* buffers."
- (let ((args occur-command-arguments ))
- (save-excursion
- (set-buffer occur-buffer)
- (apply 'occur args))))
+ (apply 'occur-1 occur-revert-properties))
(defun occur-mode-mouse-goto (event)
"In Occur mode, go to the occurrence whose line you click on."
(interactive "e")
- (let (buffer pos)
+ (let ((buffer nil)
+ (pos nil))
(save-excursion
(set-buffer (window-buffer (posn-window (event-end event))))
(save-excursion
(goto-char (posn-point (event-end event)))
- (setq pos (occur-mode-find-occurrence))
- (setq buffer occur-buffer)))
+ (let ((props (occur-mode-find-occurrence)))
+ (setq buffer (car props))
+ (setq pos (cdr props)))))
(pop-to-buffer buffer)
(goto-char (marker-position pos))))
(defun occur-mode-find-occurrence ()
- (if (or (null occur-buffer)
- (null (buffer-name occur-buffer)))
- (progn
- (setq occur-buffer nil)
- (error "Buffer in which occurrences were found is deleted")))
- (let ((pos (get-text-property (point) 'occur)))
- (if (null pos)
- (error "No occurrence on this line")
- pos)))
+ (let ((props (get-text-property (point) 'occur-target)))
+ (unless props
+ (error "No occurrence on this line"))
+ (unless (buffer-live-p (car props))
+ (error "Buffer in which occurrence was found is deleted"))
+ props))
(defun occur-mode-goto-occurrence ()
"Go to the occurrence the current line describes."
(interactive)
- (let ((pos (occur-mode-find-occurrence)))
- (pop-to-buffer occur-buffer)
- (goto-char (marker-position pos))))
+ (let ((target (occur-mode-find-occurrence)))
+ (pop-to-buffer (car target))
+ (goto-char (marker-position (cdr target)))))
(defun occur-mode-goto-occurrence-other-window ()
"Go to the occurrence the current line describes, in another window."
(interactive)
- (let ((pos (occur-mode-find-occurrence)))
- (switch-to-buffer-other-window occur-buffer)
- (goto-char (marker-position pos))))
+ (let ((target (occur-mode-find-occurrence)))
+ (switch-to-buffer-other-window (car target))
+ (goto-char (marker-position (cdr target)))))
(defun occur-mode-display-occurrence ()
"Display in another window the occurrence the current line describes."
(interactive)
- (let ((pos (occur-mode-find-occurrence))
+ (let ((target (occur-mode-find-occurrence))
same-window-buffer-names
same-window-regexps
window)
- (setq window (display-buffer occur-buffer))
+ (setq window (display-buffer (car target)))
;; This is the way to set point in the proper window.
(save-selected-window
(select-window window)
- (goto-char (marker-position pos)))))
+ (goto-char (marker-position (cdr target))))))
(defun occur-next (&optional n)
"Move to the Nth (default 1) next match in the *Occur* buffer."
(error "No more matches"))
(setq n (1- n)))))
-
-
(defun occur-prev (&optional n)
"Move to the Nth (default 1) previous match in the *Occur* buffer."
(interactive "p")
(defalias 'list-matching-lines 'occur)
-(defvar list-matching-lines-face 'bold
+(defcustom list-matching-lines-face 'bold
"*Face used by \\[list-matching-lines] to show the text that matches.
-If the value is nil, don't highlight the matching portions specially.")
+If the value is nil, don't highlight the matching portions specially."
+ :type 'face
+ :group 'matching)
+
+(defcustom list-matching-lines-buffer-name-face 'underline
+ "*Face used by \\[list-matching-lines] to show the names of buffers.
+If the value is nil, don't highlight the buffer names specially."
+ :type 'face
+ :group 'matching)
+
+(defun occur-accumulate-lines (count)
+ (save-excursion
+ (let ((forwardp (> count 0))
+ (result nil))
+ (while (not (or (zerop count)
+ (if forwardp
+ (eobp)
+ (bobp))))
+ (if forwardp
+ (decf count)
+ (incf count))
+ (push
+ (buffer-substring
+ (line-beginning-position)
+ (line-end-position))
+ result)
+ (forward-line (if forwardp 1 -1)))
+ (nreverse result))))
+
+(defun occur-read-primary-args ()
+ (list (let* ((default (car regexp-history))
+ (input
+ (read-from-minibuffer
+ (if default
+ (format "List lines matching regexp (default `%s'): "
+ default)
+ "List lines matching regexp: ")
+ nil
+ nil
+ nil
+ 'regexp-history)))
+ (if (equal input "")
+ default
+ input))
+ current-prefix-arg))
(defun occur (regexp &optional nlines)
"Show all lines in the current buffer containing a match for REGEXP.
If REGEXP contains upper case characters (excluding those preceded by `\\'),
the matching is case-sensitive."
+ (interactive (occur-read-primary-args))
+ (occur-1 regexp nlines (list (current-buffer))))
+
+(defun multi-occur (bufs regexp &optional nlines)
+ "Show all lines in buffers BUFS containing a match for REGEXP.
+This function acts on multiple buffers; otherwise, it is exactly like
+`occur'."
(interactive
- (list (let* ((default (car regexp-history))
- (input
- (read-from-minibuffer
- (if default
- (format "List lines matching regexp (default `%s'): "
- default)
- "List lines matching regexp: ")
- nil nil nil 'regexp-history default t)))
- (and (equal input "") default
- (setq input default))
- input)
- current-prefix-arg))
- (let* ((nlines (if nlines
- (prefix-numeric-value nlines)
- list-matching-lines-default-context-lines))
- (current-tab-width tab-width)
- (inhibit-read-only t)
- ;; Minimum width of line number plus trailing colon.
- (min-line-number-width 6)
- ;; Width of line number prefix without the colon. Choose a
- ;; width that's a multiple of `tab-width' in the original
- ;; buffer so that lines in *Occur* appear right.
- (line-number-width (1- (* (/ (- (+ min-line-number-width
- tab-width)
- 1)
- tab-width)
- tab-width)))
- ;; Format string for line numbers.
- (line-number-format (format "%%%dd" line-number-width))
- (empty (make-string line-number-width ?\ ))
- (first t)
- ;;flag to prevent printing separator for first match
- (occur-num-matches 0)
- (buffer (current-buffer))
- (dir default-directory)
- (linenum 1)
- (prevpos
- ;;position of most recent match
- (point-min))
- (case-fold-search (and case-fold-search
- (isearch-no-upper-case-p regexp t)))
- (final-context-start
- ;; Marker to the start of context immediately following
- ;; the matched text in *Occur*.
- (make-marker)))
-;;; (save-excursion
-;;; (beginning-of-line)
-;;; (setq linenum (1+ (count-lines (point-min) (point))))
-;;; (setq prevpos (point)))
- (save-excursion
+ (cons
+ (let ((bufs (list (read-buffer "First buffer to search: "
+ (current-buffer) t)))
+ (buf nil))
+ (while (not (string-equal
+ (setq buf (read-buffer "Next buffer to search (RET to end): "
+ nil t))
+ ""))
+ (push buf bufs))
+ (nreverse (mapcar #'get-buffer bufs)))
+ (occur-read-primary-args)))
+ (occur-1 regexp nlines bufs))
+
+(defun multi-occur-by-filename-regexp (bufregexp regexp &optional nlines)
+ "Show all lines in buffers containing REGEXP, named by BUFREGEXP.
+See also `multi-occur'."
+ (interactive
+ (cons
+ (let* ((default (car regexp-history))
+ (input
+ (read-from-minibuffer
+ "List lines in buffers whose filename matches regexp: "
+ nil
+ nil
+ nil
+ 'regexp-history)))
+ (if (equal input "")
+ default
+ input))
+ (occur-read-primary-args)))
+ (when bufregexp
+ (occur-1 regexp nlines
+ (delq nil
+ (mapcar (lambda (buf)
+ (when (and (buffer-file-name buf)
+ (string-match bufregexp
+ (buffer-file-name buf)))
+ buf))
+ (buffer-list))))))
+
+(defun occur-1 (regexp nlines bufs)
+ (let ((occur-buf (get-buffer-create "*Occur*")))
+ (with-current-buffer occur-buf
+ (setq buffer-read-only nil)
+ (occur-mode)
+ (erase-buffer)
+ (let ((count (occur-engine
+ regexp bufs occur-buf
+ (or nlines list-matching-lines-default-context-lines)
+ (and case-fold-search
+ (isearch-no-upper-case-p regexp t))
+ nil nil nil nil)))
+ (message "Searched %d buffers; %s matches for `%s'" (length bufs)
+ (if (zerop count)
+ "no"
+ (format "%d" count))
+ regexp)
+ (if (> count 0)
+ (display-buffer occur-buf)
+ (kill-buffer occur-buf)))
(goto-char (point-min))
- ;; Check first whether there are any matches at all.
- (if (not (re-search-forward regexp nil t))
- (message "No matches for `%s'" regexp)
- ;; Back up, so the search loop below will find the first match.
- (goto-char (match-beginning 0))
- (with-output-to-temp-buffer "*Occur*"
- (save-excursion
- (set-buffer standard-output)
- (setq default-directory dir)
- ;; We will insert the number of lines, and "lines", later.
- (insert " matching ")
- (let ((print-escape-newlines t))
- (prin1 regexp))
- (insert " in buffer " (buffer-name buffer) ?. ?\n)
- (occur-mode)
- (setq occur-buffer buffer)
- (setq occur-nlines nlines)
- (setq occur-command-arguments
- (list regexp nlines)))
- (if (eq buffer standard-output)
- (goto-char (point-max)))
- (save-excursion
- ;; Find next match, but give up if prev match was at end of buffer.
- (while (and (not (eobp))
- (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 point of text in source buffer to be put
- ;;into *Occur*
- (start (save-excursion
- (goto-char (match-beginning 0))
- (forward-line (if (< nlines 0)
- nlines
- (- nlines)))
- (point)))
- ;; end point of text in source buffer to be put
- ;; into *Occur*
- (end (save-excursion
- (goto-char (match-end 0))
- (if (> nlines 0)
- (forward-line (1+ nlines))
- (forward-line 1))
- (point)))
- ;; Amount of context before matching text
- (match-beg (- (match-beginning 0) start))
- ;; Length of matching text
- (match-len (- (match-end 0) (match-beginning 0)))
- (tag (format line-number-format linenum))
- tem
- insertion-start
- ;; 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)))
+ (setq occur-revert-properties (list regexp nlines bufs)
+ buffer-read-only t))))
+
+;; Most of these are macros becuase if we used `flet', it wouldn't
+;; create a closure, so things would blow up at run time. Ugh. :(
+(macrolet ((insert-get-point (obj)
+ `(progn
+ (insert ,obj)
+ (point)))
+ (add-prefix (lines)
+ `(mapcar
+ #'(lambda (line)
+ (concat " :" line "\n"))
+ ,lines)))
+ (defun occur-engine (regexp buffers out-buf nlines case-fold-search
+ title-face prefix-face match-face keep-props)
+ (with-current-buffer out-buf
+ (setq buffer-read-only nil)
+ (let ((globalcount 0))
+ ;; Map over all the buffers
+ (dolist (buf buffers)
+ (when (buffer-live-p buf)
+ (let ((c 0) ;; count of matched lines
+ (l 1) ;; line count
+ (matchbeg 0)
+ (matchend 0)
+ (origpt nil)
+ (begpt nil)
+ (endpt nil)
+ (marker nil)
+ (curstring "")
+ (headerpt (with-current-buffer out-buf (point))))
+ (save-excursion
+ (set-buffer buf)
(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)
- (save-excursion
- (set-buffer "*Occur*")
- (setq tab-width current-tab-width))
-
- ;; Insert matching text including context lines from
- ;; source buffer into *Occur*
- (set-marker text-beg (point))
- (setq insertion-start (point))
- (insert-buffer-substring buffer start end)
- (or (and (/= (+ start match-beg) end)
- (with-current-buffer buffer
- (eq (char-before end) ?\n)))
- (insert "\n"))
- (set-marker final-context-start
- (+ (- (point) (- end (match-end 0)))
- (if (save-excursion
- (set-buffer buffer)
- (save-excursion
- (goto-char (match-end 0))
- (end-of-line)
- (bolp)))
- 1 0)))
- (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)
-
- ;; Now go back to the start of the matching text
- ;; adding the space and colon to the start of each line.
- (goto-char insertion-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 line-number-format this-linenum)))
- (insert tag ?:)
- (forward-line 1)
- (setq tag nil)
- (setq this-linenum (1+ this-linenum)))
- (while (and (not (eobp)) (<= (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.
- (add-text-properties
- (marker-position text-beg) (- (marker-position text-end) 1)
- '(mouse-face highlight
- help-echo "mouse-2: go to this occurrence"))
- (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)))
- (setq buffer-read-only t)))))))
+ (goto-char (point-min)) ;; begin searching in the buffer
+ (while (not (eobp))
+ (setq origpt (point))
+ (when (setq endpt (re-search-forward regexp nil t))
+ (incf c) ;; increment match count
+ (incf globalcount)
+ (setq matchbeg (match-beginning 0)
+ matchend (match-end 0))
+ (setq begpt (save-excursion
+ (goto-char matchbeg)
+ (line-beginning-position)))
+ (incf l (1- (count-lines origpt endpt)))
+ (setq marker (make-marker))
+ (set-marker marker matchbeg)
+ (setq curstring (buffer-substring begpt
+ (line-end-position)))
+ ;; Depropertize the string, and maybe
+ ;; highlight the matches
+ (let ((len (length curstring))
+ (start 0))
+ (unless keep-props
+ (set-text-properties 0 len nil curstring))
+ (while (and (< start len)
+ (string-match regexp curstring start))
+ (add-text-properties (match-beginning 0)
+ (match-end 0)
+ (append
+ '(occur-match t)
+ (when match-face
+ `(face ,match-face)))
+ curstring)
+ (setq start (match-end 0))))
+ ;; Generate the string to insert for this match
+ (let* ((out-line
+ (concat
+ (apply #'propertize (format "%-6d:" l)
+ (append
+ (when prefix-face
+ `(face prefix-face))
+ '(occur-prefix t)))
+ curstring
+ "\n"))
+ (data
+ (if (= nlines 1)
+ ;; The simple display style
+ out-line
+ ;; The complex multi-line display
+ ;; style. Generate a list of lines,
+ ;; concatenate them all together.
+ (apply #'concat
+ (nconc
+ (add-prefix (nreverse (cdr (occur-accumulate-lines (- nlines)))))
+ (list out-line)
+ (add-prefix (cdr (occur-accumulate-lines nlines))))))))
+ ;; Actually insert the match display data
+ (with-current-buffer out-buf
+ (let ((beg (point))
+ (end (insert-get-point data)))
+ (unless (= nlines 1)
+ (insert-get-point "-------\n"))
+ (add-text-properties
+ beg (1- end)
+ `(occur-target ,(cons buf marker)
+ mouse-face highlight help-echo
+ "mouse-2: go to this occurrence")))))
+ (goto-char endpt))
+ (incf l)
+ ;; On to the next match...
+ (forward-line 1))))
+ (when (not (zerop c)) ;; is the count zero?
+ (with-current-buffer out-buf
+ (goto-char headerpt)
+ (let ((beg (point))
+ (end (insert-get-point
+ (format "%d lines matching \"%s\" in buffer: %s\n"
+ c regexp (buffer-name buf)))))
+ (add-text-properties beg end
+ (append
+ (when title-face
+ `(face ,title-face))
+ `(occur-title ,buf))))
+ (goto-char (point-max)))))))
+ ;; Return the number of matches
+ globalcount))))
+
+(defun occur-fontify-on-property (prop face beg end)
+ (let ((prop-beg (or (and (get-text-property (point) prop) (point))
+ (next-single-property-change (point) prop nil end))))
+ (when (and prop-beg (not (= prop-beg end)))
+ (let ((prop-end (next-single-property-change beg prop nil end)))
+ (when (and prop-end (not (= prop-end end)))
+ (put-text-property prop-beg prop-end 'face face)
+ prop-end)))))
+
+(defun occur-fontify-region-function (beg end &optional verbose)
+ (when verbose (message "Fontifying..."))
+ (let ((inhibit-read-only t))
+ (save-excursion
+ (dolist (e `((occur-title . ,list-matching-lines-buffer-name-face)
+ (occur-match . ,list-matching-lines-face)))
+ ; (occur-prefix . ,list-matching-lines-prefix-face)))
+ (goto-char beg)
+ (let ((change-end nil))
+ (while (setq change-end (occur-fontify-on-property (car e)
+ (cdr e)
+ (point)
+ end))
+ (goto-char change-end))))))
+ (when verbose (message "Fontifying...done")))
+
+(defun occur-unfontify-region-function (beg end)
+ (let ((inhibit-read-only t))
+ (remove-text-properties beg end '(face nil))))
+
\f
;; It would be nice to use \\[...], but there is no reasonable way
;; to make that display both SPC and Y.
projects / emacs.git / commitdiff