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;;; ede/linux.el --- Special project for Linux
;; Copyright (C) 2008-2011 Free Software Foundation, Inc.
;; Author: Eric M. Ludlam <eric@siege-engine.com>
;; 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 <http://www.gnu.org/licenses/>.
;;; Commentary:
;;
;; Provide a special project type just for Linux, cause Linux is special.
;;
;; Identifies a Linux project automatically.
;; Speedy ede-expand-filename based on extension.
;; Pre-populates the preprocessor map from lisp.h
;;
;; ToDo :
;; * Add "build" options.
;; * Add texinfo lookup options.
;; * Add website
(require 'ede)
(declare-function semanticdb-file-table-object "semantic/db")
(declare-function semanticdb-needs-refresh-p "semantic/db")
(declare-function semanticdb-refresh-table "semantic/db")
;;; Code:
(defvar ede-linux-project-list nil
"List of projects created by option `ede-linux-project'.")
(defun ede-linux-file-existing (dir)
"Find a Linux project in the list of Linux projects.
DIR is the directory to search from."
(let ((projs ede-linux-project-list)
(ans nil))
(while (and projs (not ans))
(let ((root (ede-project-root-directory (car projs))))
(when (string-match (concat "^" (regexp-quote root)) dir)
(setq ans (car projs))))
(setq projs (cdr projs)))
ans))
;;;###autoload
(defun ede-linux-project-root (&optional dir)
"Get the root directory for DIR."
(when (not dir) (setq dir default-directory))
(let ((case-fold-search t)
(proj (ede-linux-file-existing dir)))
(if proj
(ede-up-directory (file-name-directory
(oref proj :file)))
;; No pre-existing project. Lets take a wild-guess if we have
;; an Linux project here.
(when (string-match "linux[^/]*" dir)
(let ((base (substring dir 0 (match-end 0))))
(when (file-exists-p (expand-file-name "scripts/ver_linux" base))
base))))))
(defun ede-linux-version (dir)
"Find the Linux version for the Linux src in DIR."
(let ((buff (get-buffer-create " *linux-query*")))
(with-current-buffer buff
(erase-buffer)
(setq default-directory (file-name-as-directory dir))
(insert-file-contents "Makefile" nil 0 512)
(goto-char (point-min))
(let (major minor sub)
(re-search-forward "^VERSION *= *\\([0-9.]+\\)")
(setq major (match-string 1))
(re-search-forward "^PATCHLEVEL *= *\\([0-9.]+\\)")
(setq minor (match-string 1))
(re-search-forward "^SUBLEVEL *= *\\([0-9.]+\\)")
(setq sub (match-string 1))
(prog1
(concat major "." minor "." sub)
(kill-buffer buff)
)))))
(defclass ede-linux-project (ede-project eieio-instance-tracker)
((tracking-symbol :initform 'ede-linux-project-list)
)
"Project Type for the Linux source code."
:method-invocation-order :depth-first)
(defun ede-linux-load (dir &optional rootproj)
"Return an Linux Project object if there is a match.
Return nil if there isn't one.
Argument DIR is the directory it is created for.
ROOTPROJ is nil, since there is only one project."
(or (ede-linux-file-existing dir)
;; Doesn't already exist, so lets make one.
(ede-linux-project "Linux"
:name "Linux"
:version (ede-linux-version dir)
:directory (file-name-as-directory dir)
:file (expand-file-name "scripts/ver_linux"
dir))
(ede-add-project-to-global-list this)
)
)
;;;###autoload
(add-to-list 'ede-project-class-files
(ede-project-autoload "linux"
:name "LINUX ROOT"
:file 'ede/linux
:proj-file "scripts/ver_linux"
:proj-root 'ede-linux-project-root
:load-type 'ede-linux-load
:class-sym 'ede-linux-project
:new-p nil)
t)
(defclass ede-linux-target-c (ede-target)
()
"EDE Linux Project target for C code.
All directories need at least one target.")
(defclass ede-linux-target-misc (ede-target)
()
"EDE Linux Project target for Misc files.
All directories need at least one target.")
(defmethod initialize-instance ((this ede-linux-project)
&rest fields)
"Make sure the targets slot is bound."
(call-next-method)
(unless (slot-boundp this 'targets)
(oset this :targets nil)))
;;; File Stuff
;;
(defmethod ede-project-root-directory ((this ede-linux-project)
&optional file)
"Return the root for THIS Linux project with file."
(ede-up-directory (file-name-directory (oref this file))))
(defmethod ede-project-root ((this ede-linux-project))
"Return my root."
this)
(defmethod ede-find-subproject-for-directory ((proj ede-linux-project)
dir)
"Return PROJ, for handling all subdirs below DIR."
proj)
;;; TARGET MANAGEMENT
;;
(defun ede-linux-find-matching-target (class dir targets)
"Find a target that is a CLASS and is in DIR in the list of TARGETS."
(let ((match nil))
(dolist (T targets)
(when (and (object-of-class-p T class)
(string= (oref T :path) dir))
(setq match T)
))
match))
(defmethod ede-find-target ((proj ede-linux-project) buffer)
"Find an EDE target in PROJ for BUFFER.
If one doesn't exist, create a new one for this directory."
(let* ((ext (file-name-extension (buffer-file-name buffer)))
(cls (cond ((not ext)
'ede-linux-target-misc)
((string-match "c\\|h" ext)
'ede-linux-target-c)
(t 'ede-linux-target-misc)))
(targets (oref proj targets))
(dir default-directory)
(ans (ede-linux-find-matching-target cls dir targets))
)
(when (not ans)
(setq ans (make-instance
cls
:name (file-name-nondirectory
(directory-file-name dir))
:path dir
:source nil))
(object-add-to-list proj :targets ans)
)
ans))
;;; UTILITIES SUPPORT.
;;
(defmethod ede-preprocessor-map ((this ede-linux-target-c))
"Get the pre-processor map for Linux C code.
All files need the macros from lisp.h!"
(require 'semantic/db)
(let* ((proj (ede-target-parent this))
(root (ede-project-root proj))
(versionfile (ede-expand-filename root "include/linux/version.h"))
(table (when (and versionfile (file-exists-p versionfile))
(semanticdb-file-table-object versionfile)))
(filemap '( ("__KERNEL__" . "")
))
)
(when table
(when (semanticdb-needs-refresh-p table)
(semanticdb-refresh-table table))
(setq filemap (append filemap (oref table lexical-table)))
)
filemap
))
(defun ede-linux-file-exists-name (name root subdir)
"Return a file name if NAME exists under ROOT with SUBDIR in between."
(let ((F (expand-file-name name (expand-file-name subdir root))))
(when (file-exists-p F) F)))
(defmethod ede-expand-filename-impl ((proj ede-linux-project) name)
"Within this project PROJ, find the file NAME.
Knows about how the Linux source tree is organized."
(let* ((ext (file-name-extension name))
(root (ede-project-root proj))
(dir (ede-project-root-directory root))
(F (cond
((not ext) nil)
((string-match "h" ext)
(or (ede-linux-file-exists-name name dir "")
(ede-linux-file-exists-name name dir "include"))
)
((string-match "txt" ext)
(ede-linux-file-exists-name name dir "Documentation"))
(t nil)))
)
(or F (call-next-method))))
(provide 'ede/linux)
;; Local variables:
;; generated-autoload-file: "loaddefs.el"
;; generated-autoload-load-name: "ede/linux"
;; End:
;;; ede/linux.el ends here
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