1 ;;; ede/locate.el --- Locate support
3 ;; Copyright (C) 2008-2011 Free Software Foundation, Inc.
5 ;; Author: Eric M. Ludlam <eric@siege-engine.com>
7 ;; This file is part of GNU Emacs.
9 ;; GNU Emacs is free software: you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation, either version 3 of the License, or
12 ;; (at your option) any later version.
14 ;; GNU Emacs is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
24 ;; Support for various LOCATE type functions.
26 ;; A key feature of EDE is `ede-expand-filename', which allows a
27 ;; project to expand a filename reference in one file to some actual
30 ;; In that way, you may #include <foo.h>, and without knowing how to
31 ;; read a Makefile, find it in <root>/include/foo.h.
33 ;; Some projects are regular, such as the Emacs project. Some
34 ;; projects are completely controlled by EDE, such sh the Project.ede
37 ;; For other projects, having a "quick hack" to support these location
40 ;; The baseclass `ede-locate-base' provides the abstract interface to
41 ;; finding files in a project.
43 ;; New location routines will subclass `ede-locate-base'.
47 ;; Configure `ede-locate-setup-options' to add the types of locate
48 ;; features you have available. EDE will then enable the correct one
49 ;; when it is available.
52 (eval-when-compile (require 'data-debug
)
53 (require 'eieio-datadebug
)
54 (require 'cedet-global
)
55 (require 'cedet-idutils
)
56 (require 'cedet-cscope
))
61 (defcustom ede-locate-setup-options
63 "List of locate objects to try out by default.
64 Listed in order of preference. If the first item cannot be used in
65 a particular project, then the next one is tried.
66 It is always assumed that `ede-locate-base' is at end of the list."
69 (choice (const :tag
"None" ede-locate-base
)
70 (const :tag
"locate" ede-locate-locate
)
71 (const :tag
"GNU Global" ede-locate-global
)
72 (const :tag
"ID Utils" ede-locate-idutils
)
73 (const :tag
"CScope" ede-locate-cscope
)))
77 (defun ede-enable-locate-on-project (&optional project
)
78 "Enable an EDE locate feature on PROJECT.
79 Attempt to guess which project locate style to use
80 based on `ede-locate-setup-options'."
82 (let* ((proj (or project
(ede-toplevel)))
83 (root (ede-project-root-directory proj
))
84 (opts ede-locate-setup-options
)
86 (while (and opts
(not ans
))
87 (when (ede-locate-ok-in-project (car opts
) root
)
88 ;; If interactive, check with the user.
89 (when (or (not (called-interactively-p 'any
))
90 (y-or-n-p (format "Set project locator to %s? " (car opts
))))
91 (setq ans
(car opts
))))
92 (setq opts
(cdr opts
)))
93 ;; No match? Always create the baseclass for the hashing tool.
95 (when (called-interactively-p 'interactive
)
96 (message "Setting locator to ede-locate-base"))
97 (setq ans
'ede-locate-base
))
98 (oset proj locate-obj
(make-instance ans
"Loc" :root root
))
99 (when (called-interactively-p 'interactive
)
100 (message "Setting locator to %s" ans
))
105 ;; The baseclass for all location style queries.
106 (defclass ede-locate-base
()
107 ((root :initarg
:root
109 "The root of these locat searches.")
111 "The last file search for with EDE locate.")
112 (lastanswer :documentation
113 "The last answer provided by the locator.")
115 "Hash table of previously found files.")
117 "Baseclass for LOCATE feature in EDE.")
119 (defmethod initialize-instance ((loc ede-locate-base
) &rest fields
)
120 "Make sure we have a hash table."
123 ;; Make sure we have a hash table.
124 (ede-locate-flush-hash loc
)
127 (defmethod ede-locate-ok-in-project :static
((loc ede-locate-base
)
129 "Is it ok to use this project type under ROOT."
132 (defmethod ede-locate-flush-hash ((loc ede-locate-base
))
133 "For LOC, flush hashtable and start from scratch."
134 (oset loc hash
(make-hash-table :test
'equal
)))
136 (defmethod ede-locate-file-in-hash ((loc ede-locate-base
)
138 "For LOC, is the file FILESTRING in our hashtable?"
139 (gethash filestring
(oref loc hash
)))
141 (defmethod ede-locate-add-file-to-hash ((loc ede-locate-base
)
142 filestring fullfilename
)
143 "For LOC, add FILESTR to the hash with FULLFILENAME."
144 (puthash filestring fullfilename
(oref loc hash
)))
146 (defmethod ede-locate-file-in-project ((loc ede-locate-base
)
149 "Locate with LOC occurrences of FILESUBSTRING.
150 Searches are done under the current root of the EDE project
151 that created this EDE locate object."
152 (let ((ans (ede-locate-file-in-project-impl loc filesubstring
))
154 (oset loc file filesubstring
)
155 (oset loc lastanswer ans
)
158 (defmethod ede-locate-file-in-project-impl ((loc ede-locate-base
)
161 "Locate with LOC occurrences of FILESUBSTRING.
162 Searches are done under the current root of the EDE project
163 that created this EDE locate object."
167 (defmethod ede-locate-create/update-root-database
:STATIC
168 ((loc ede-locate-base
) root
)
169 "Create or update the database for the current project.
170 You cannot create projects for the baseclass."
171 (error "Cannot create/update a database of type %S"
176 ;; Using the standard unix "locate" command.
177 ;; Since locate is system wide, we need to hack the search
178 ;; to restrict it to within just this project.
180 (defclass ede-locate-locate
(ede-locate-base)
182 "EDE Locator using the locate command.
183 Configure the Emacs `locate-program' variable to also
184 configure the use of EDE locate.")
186 (defmethod ede-locate-ok-in-project :static
((loc ede-locate-locate
)
188 "Is it ok to use this project type under ROOT."
189 (or (featurep 'locate
) (locate-library "locate"))
192 (defmethod ede-locate-file-in-project-impl ((loc ede-locate-locate
)
194 "Locate with LOC occurrences of FILESUBSTRING under PROJECTROOT.
195 Searches are done under the current root of the EDE project
196 that created this EDE locate object."
197 ;; We want something like:
198 ;; /my/project/root*/filesubstring.c
199 (let* ((searchstr (concat (directory-file-name (oref loc root
))
201 (b (get-buffer-create "*LOCATE*"))
202 (cd default-directory
)
204 (with-current-buffer b
205 (setq default-directory cd
)
207 (apply 'call-process locate-command
210 (with-current-buffer b
211 (split-string (buffer-string) "\n" t
))
217 (defclass ede-locate-global
(ede-locate-base)
219 "EDE Locator using GNU Global.
220 Configure EDE's use of GNU Global through the cedet-global.el
221 variable `cedet-global-command'.")
223 (defmethod initialize-instance ((loc ede-locate-global
)
225 "Make sure that we can use GNU Global."
226 (require 'cedet-global
)
227 ;; Get ourselves initialized.
230 (cedet-gnu-global-version-check)
231 (let* ((default-directory (oref loc root
))
232 (root (cedet-gnu-global-root)))
234 (error "Cannot use GNU Global in %s"
238 (defmethod ede-locate-ok-in-project :static
((loc ede-locate-global
)
240 "Is it ok to use this project type under ROOT."
241 (require 'cedet-global
)
242 (cedet-gnu-global-version-check)
243 (let* ((default-directory root
)
244 (newroot (cedet-gnu-global-root)))
247 (defmethod ede-locate-file-in-project-impl ((loc ede-locate-global
)
249 "Locate with LOC occurrences of FILESUBSTRING under PROJECTROOT.
250 Searches are done under the current root of the EDE project
251 that created this EDE locate object."
252 (require 'cedet-global
)
253 (let ((default-directory (oref loc root
)))
254 (cedet-gnu-global-expand-filename filesubstring
)))
256 (defmethod ede-locate-create/update-root-database
:STATIC
257 ((loc ede-locate-global
) root
)
258 "Create or update the GNU Global database for the current project."
259 (cedet-gnu-global-create/update-database root
))
263 (defclass ede-locate-idutils
(ede-locate-base)
265 "EDE Locator using IDUtils.
266 Configure EDE's use of IDUtils through the cedet-idutils.el
267 file name searching variable `cedet-idutils-file-command'.")
269 (defmethod initialize-instance ((loc ede-locate-idutils
)
271 "Make sure that we can use IDUtils."
272 ;; Get ourselves initialized.
275 (require 'cedet-idutils
)
276 (cedet-idutils-version-check)
277 (when (not (cedet-idutils-support-for-directory (oref loc root
)))
278 (error "Cannot use IDUtils in %s"
282 (defmethod ede-locate-ok-in-project :static
((loc ede-locate-idutils
)
284 "Is it ok to use this project type under ROOT."
285 (require 'cedet-idutils
)
286 (cedet-idutils-version-check)
287 (when (cedet-idutils-support-for-directory root
)
290 (defmethod ede-locate-file-in-project-impl ((loc ede-locate-idutils
)
292 "Locate with LOC occurrences of FILESUBSTRING under PROJECTROOT.
293 Searches are done under the current root of the EDE project
294 that created this EDE locate object."
295 (require 'cedet-idutils
)
296 (let ((default-directory (oref loc root
)))
297 (cedet-idutils-expand-filename filesubstring
)))
299 (defmethod ede-locate-create/update-root-database
:STATIC
300 ((loc ede-locate-idutils
) root
)
301 "Create or update the GNU Global database for the current project."
302 (cedet-idutils-create/update-database root
))
306 (defclass ede-locate-cscope
(ede-locate-base)
308 "EDE Locator using Cscope.
309 Configure EDE's use of Cscope through the cedet-cscope.el
310 file name searching variable `cedet-cscope-file-command'.")
312 (defmethod initialize-instance ((loc ede-locate-cscope
)
314 "Make sure that we can use Cscope."
315 ;; Get ourselves initialized.
318 (cedet-cscope-version-check)
319 (when (not (cedet-cscope-support-for-directory (oref loc root
)))
320 (error "Cannot use Cscope in %s"
324 (defmethod ede-locate-ok-in-project :static
((loc ede-locate-cscope
)
326 "Is it ok to use this project type under ROOT."
327 (cedet-cscope-version-check)
328 (when (cedet-cscope-support-for-directory root
)
331 (defmethod ede-locate-file-in-project-impl ((loc ede-locate-cscope
)
333 "Locate with LOC occurrences of FILESUBSTRING under PROJECTROOT.
334 Searches are done under the current root of the EDE project
335 that created this EDE locate object."
336 (let ((default-directory (oref loc root
)))
337 (cedet-cscope-expand-filename filesubstring
)))
339 (defmethod ede-locate-create/update-root-database
:STATIC
340 ((loc ede-locate-cscope
) root
)
341 "Create or update the GNU Global database for the current project."
342 (cedet-cscope-create/update-database root
))
344 (provide 'ede
/locate
)
347 ;; generated-autoload-file: "loaddefs.el"
348 ;; generated-autoload-load-name: "ede/locate"
351 ;;; ede/locate.el ends here