leake@cme-durer.ARPA (Stephe Leake) (03/08/88)
We are using the Verdix compiler on a Sun Unix system. Verdix provides
the command a.tags, which generates a tags file, using ctags format. I
would like to be able to use these tags from within gnuemacs, but that
editor only supports its own tags formats. Does anyone have a gnuemacs
utility for reading a ctags file?
Thanks
--
NAME: Stephe Leake TELE: (301) 975-3431
USMAIL: National Bureau of Standards ARPA: leake@cme-durer.arpa
Rm. B-124, Bldg. 220 UUCP: uunet!cme-durer!leake
Gaithersburg, MD 20899jd@ncrsecp.Copenhagen.NCR.dk (Jesper Dybdal) (03/10/88)
In article <249@conky.cme-durer.ARPA>, leake@cme-durer.ARPA (Stephe Leake) writes: > Does anyone have a gnuemacs utility for reading a ctags file? Yes, here it is. It works under Emacs 17.57, and probably all newer versions. Set up an autoload of the functions "vi-tag" and "set-vi-tag-file" and bind some key sequence to "vi-tag". - - - - - - - - vi-tags.el - - - - - - - - - - - cut here - - - - - - - - ;; The following functions implement a tag mechanism using vi-compatible ;; tag files. ;; jd 87-06-24. ;; Fixed to not clobber case-fold-search of the buffer that vi-tag is called ;; in. jd 87-08-07. ;; Added buffer-flush-undo in get-vi-tag-buffer. jd 87-11-27. ;; Added "(widen)" in the buffer for the file found. jd 88-02-15. (provide 'vi-tags) (defvar vi-tag-file-name "tags" ; also declared in "secp.el" "*The name of the file to be used as a vi-like tags file. The initial value is \"tags\". The value is replaced by a fully expanded file name when vi-tag (\\[vi-tag]) or set-vi-tag-file (\\[set-vi-tag-file]) is called for the first time. jd 87-06-23.") (defvar last-vi-tag nil) (defun vi-tag (name) "Find the tag NAME using a vi-like tags file. NAME is a regular expression that must match the complete tag. jd 88-02-15." (interactive (list (read-string "Tag: " last-vi-tag))) (let (file direction line dollar) (save-excursion (get-vi-tag-buffer) (if (string-equal name "") (setq name (or last-vi-tag (error "No tag specified"))) (setq last-vi-tag name)) (if (and current-vi-tag-file-name (string-equal current-vi-tag-file-name vi-tag-file-name) (file-exists-p vi-tag-file-name) (equal (nth 5 (file-attributes vi-tag-file-name)) current-vi-tag-modif)) nil ;; Buffer contents are ok ;; Read in a tag file: (while (not (file-exists-p vi-tag-file-name)) (and noninteractive (error "Tag file \"%s\" does not exist" vi-tag-file-name)) (ding) (setq vi-tag-file-name (read-file-name "Tag file does not exist - enter tag file: " nil "tags" t)) (fix-vi-tag-name)) (message "Reading tag file \"%s\"" vi-tag-file-name) (sit-for 1) (setq current-vi-tag-file-name nil ; no file in buffer buffer-read-only nil) (erase-buffer) (insert-file-contents vi-tag-file-name nil) ; ctags escapes backslashes and slashes in ; the search strings - remove the escapes: (goto-char (point-min)) (while (re-search-forward "\\\\\\([/\\]\\)" nil t) (replace-match "\\1" t nil)) (set-buffer-modified-p nil) (setq buffer-read-only t current-vi-tag-modif (nth 5 (file-attributes vi-tag-file-name)) current-vi-tag-file-name vi-tag-file-name) ) (let ((str (concat "^" name ;; \1=file name \2=[/?] \3=line "\t\\([^\t\n ]*\\)\t\\([/?]\\)\\^\\(.*\\)\\2$" )) (case-fold-search nil)) (message "Searching for \"%s\"" name) (sit-for 0) (goto-char (point-min)) ; (message "%s" str) (sit-for 3) (or (re-search-forward str nil t) (let ((case-fold-search t)) (goto-char (point-min)) (or (re-search-forward str nil t) (error "Cannot find tag \"%s\"" name)))) ; expand file name in directory of tag file: (setq file (expand-file-name (buffer-match-substring 1))) (setq direction (buffer-match-substring 2)) (setq line (buffer-match-substring 3)) (if (string-match "^\\(.*\\)\\$$" line) (setq dollar "$" ; trailing "$" line (substring line 0 (match-end 1))) (setq dollar "")) ; no trailing "$" ; (message "f=%s di=%s l=%s d=%s" ; file direction line dollar) (sit-for 2) ) ) ; end of save-excursion (or (file-exists-p file) (error "File \"%s\" does not exist" file)) (message "") ;; remove "searching for..." message (if (and (buffer-file-name) (string-equal (buffer-file-name) file)) (push-mark) (find-file file)) (widen) ; jd 88-02-15 (let ((str (concat "^" (regexp-quote line) dollar)) (case-fold-search nil)) ; (message "%s" str) (sit-for 3) (if (string-equal direction "/") (progn ; search forward (goto-char (point-min)) (re-search-forward str)) (progn ; search backward (goto-char (point-max)) (re-search-backward str))) (beginning-of-line) (recenter 0)))) (defun set-vi-tag-file (file-name) "Set the name of the file to be used by the vi-tag function to FILE-NAME. jd 87-06-16." (interactive (list (let ((firsttime t) ; create local versions of default-directory and ; vi-tag-file-name to be used by fix-vi-tag-name: (default-directory default-directory) vi-tag-file-name) (while (or firsttime (not (file-exists-p vi-tag-file-name))) (or firsttime (ding)) (setq vi-tag-file-name (read-file-name (if firsttime "Tag file for vi-tag: " "File does not exist - enter tag file: ") nil "tags" t) firsttime nil) (fix-vi-tag-name)) vi-tag-file-name))) (setq vi-tag-file-name file-name) (save-excursion (get-vi-tag-buffer)) ; fix names (message "Tag file is \"%s\"" vi-tag-file-name)) (defun get-vi-tag-buffer () (set-buffer (get-buffer-create "*vi-tags*")) (bury-buffer (current-buffer)) (buffer-flush-undo (current-buffer)) (auto-save-mode -1) (set-visited-file-name nil) ; The following buffer-local variables contain the full path name ; and last modification time of the tag file that the buffer contains. ; If the buffer does not contain a valid tag file, ; current-vi-tag-file-name is nil and current-vi-tag-modif is garbage. (make-local-variable 'current-vi-tag-file-name) (make-local-variable 'current-vi-tag-modif) (widen) (fix-vi-tag-name)) (defun fix-vi-tag-name () ; This function does the following: ; - append "tags" to vi-tag-file-name if it is ; the name of a directory (relative to default-directory). ; - if vi-tag-file-name is an absolute name: ; set default-directory from it; ; - otherwise: ; expand vi-tag-file-name using the current value of ; default-directory. (while (file-directory-p vi-tag-file-name) (setq vi-tag-file-name (concat vi-tag-file-name (if (string-match "/$" vi-tag-file-name) "tags" "/tags")))) (setq vi-tag-file-name (expand-file-name vi-tag-file-name) default-directory (file-name-directory vi-tag-file-name))) - - - - - - - - end of vi-tags.el - - - - - - - - cut here - - - - - - - - -- Jesper Dybdal Jesper.Dybdal@Copenhagen.NCR.dk NCR Corporation Jesper.Dybdal@Copenhagen.NCR.com Systems Engineering - Copenhagen ...!mcvax!diku!ncrsecp!jesper.dybdal
jd@ncrsecp.Copenhagen.NCR.dk (Jesper Dybdal) (03/17/88)
In article <954@ncrsecp.Copenhagen.NCR.dk>, I write: > In article <249@conky.cme-durer.ARPA>, leake@cme-durer.ARPA (Stephe Leake) > writes: > > Does anyone have a gnuemacs utility for reading a ctags file? > > Yes, here it is. > ... However, I forgot that vi-tag uses a function which is in pure Lisp at our site - sorry. To make it work, please add the following simple function definition to vi-tags.el: (defun buffer-match-substring (n) "Returns (buffer-substring (match-beginning n) (match-end n))). jd 87-06-23." (buffer-substring (match-beginning n) (match-end n))) -- Jesper Dybdal Jesper.Dybdal@Copenhagen.NCR.dk NCR Corporation Jesper.Dybdal@Copenhagen.NCR.com Systems Engineering - Copenhagen ...!mcvax!diku!ncrsecp!jesper.dybdal