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|
;;; cedet-idutils.el --- ID Utils support for CEDET. -*- lexical-binding: t; -*-
;; Copyright (C) 2009-2021 Free Software Foundation, Inc.
;; Author: Eric M. Ludlam <zappo@gnu.org>
;; Old-Version: 0.2
;; Keywords: OO, lisp
;; Package: cedet
;; 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:
;;
;; Basic support calling ID Utils functions, and checking version
;; numbers.
;;; Code:
(defvar cedet-idutils-min-version "4.0"
"Minimum version of ID Utils required.")
(defcustom cedet-idutils-file-command "fnid"
"Command name for the ID Utils executable for searching file names."
:type 'string
:group 'cedet)
(defcustom cedet-idutils-token-command "lid"
"Command name for the ID Utils executable for searching for tokens."
:type 'string
:group 'cedet)
(defcustom cedet-idutils-make-command "mkid"
"Command name for the ID Utils executable for creating token databases."
:type 'string
:group 'cedet)
(defun cedet-idutils-search (searchtext texttype type _scope)
"Perform a search with ID Utils, return the created buffer.
SEARCHTEXT is text to find.
TEXTTYPE is the type of text, such as `regexp', `string', `tagname',
`tagregexp', or `tagcompletions'.
TYPE is the type of search, meaning that SEARCHTEXT is compared to
filename, tagname (tags table), references (uses of a tag) , or
symbol (uses of something not in the tag table.)
SCOPE is the scope of the search, such as `project' or `subdirs'.
Note: Scope is not yet supported."
(if (eq type 'file)
;; Calls for file stuff is very simple.
(cedet-idutils-fnid-call (list searchtext))
;; Calls for text searches is more complex.
(let* ((resultflg (if (eq texttype 'tagcompletions)
(list "--key=token")
(list "--result=grep")))
;; (scopeflgs (cond ((eq scope 'project) "" ) ((eq scope 'target) "l")))
(stflag (cond ((or (eq texttype 'tagname)
(eq texttype 'tagregexp))
(list "-r" "-w"))
((eq texttype 'tagcompletions)
;; Add regex to search text for beginning of char.
(setq searchtext (concat "^" searchtext))
(list "-r" "-s" ))
((eq texttype 'regexp)
(list "-r"))
;; t means 'symbol
(t (list "-l" "-w"))))
)
(cedet-idutils-lid-call (append resultflg nil stflag ;; scopeflgs
(list searchtext))))))
(defun cedet-idutils-fnid-call (flags)
"Call ID Utils fnid with the list of FLAGS.
Return the created buffer with program output."
(let ((b (get-buffer-create "*CEDET fnid*"))
(cd default-directory)
)
(with-current-buffer b
(setq default-directory cd)
(erase-buffer))
(apply #'call-process cedet-idutils-file-command
nil b nil
flags)
b))
(defun cedet-idutils-lid-call (flags)
"Call ID Utils lid with the list of FLAGS.
Return the created buffer with program output."
(let ((b (get-buffer-create "*CEDET lid*"))
(cd default-directory)
)
(with-current-buffer b
(setq default-directory cd)
(erase-buffer))
(apply #'call-process cedet-idutils-token-command
nil b nil
flags)
b))
(defun cedet-idutils-mkid-call (flags)
"Call ID Utils mkid with the list of FLAGS.
Return the created buffer with program output."
(let ((b (get-buffer-create "*CEDET mkid*"))
(cd default-directory)
)
(with-current-buffer b
(setq default-directory cd)
(erase-buffer))
(apply #'call-process cedet-idutils-make-command
nil b nil
flags)
b))
;;; UTIL CALLS
;;
(defun cedet-idutils-expand-filename (filename)
"Expand the FILENAME with ID Utils.
Return a filename relative to the default directory."
(interactive "sFile: ")
(let ((ans (with-current-buffer (cedet-idutils-fnid-call (list filename))
(goto-char (point-min))
(if (looking-at "[^ \n]*fnid: ")
(error "ID Utils not available")
(split-string (buffer-string) "\n" t)))))
(setq ans (mapcar #'expand-file-name ans))
(when (called-interactively-p 'interactive)
(if ans
(if (= (length ans) 1)
(message "%s" (car ans))
(message "%s + %d others" (car ans)
(length (cdr ans))))
(error "No file found")))
ans))
(defun cedet-idutils-support-for-directory (&optional dir)
"Return non-nil if ID Utils has a support file for DIR.
If DIR is not supplied, use the current default directory.
This works by running lid on a bogus symbol, and looking for
the error code."
(save-excursion
(let ((default-directory (or dir default-directory)))
(condition-case nil
(progn
(set-buffer (cedet-idutils-fnid-call '("moose")))
(goto-char (point-min))
(if (looking-at "[^ \n]*fnid: ")
nil
t))
(error nil)))))
(defun cedet-idutils-version-check (&optional noerror)
"Check the version of the installed ID Utils command.
If optional programmatic argument NOERROR is non-nil,
then instead of throwing an error if Global isn't available,
return nil."
(interactive)
(let ((b (condition-case nil
(cedet-idutils-fnid-call (list "--version"))
(error nil)))
(rev nil))
(if (not b)
(progn
(when (called-interactively-p 'interactive)
(message "ID Utils not found."))
nil)
(with-current-buffer b
(goto-char (point-min))
(if (re-search-forward "fnid - \\([0-9.]+\\)" nil t)
(setq rev (match-string 1))
(setq rev "0"))
(if (version< rev cedet-idutils-min-version)
(if noerror
nil
(error "Version of ID Utils is %s. Need at least %s"
rev cedet-idutils-min-version))
;; Else, return TRUE, as in good enough.
(when (called-interactively-p 'interactive)
(message "ID Utils %s - Good enough for CEDET." rev))
t)))))
(defun cedet-idutils-create/update-database (&optional dir)
"Create an IDUtils database in DIR.
IDUtils must start from scratch when updating a database."
(interactive "DDirectory: ")
(let ((default-directory dir))
(cedet-idutils-mkid-call nil)))
(provide 'cedet-idutils)
;;; cedet-idutils.el ends here
|
