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1 | ;;; -*-lisp-*- |
2 | ;;; | |
dea4d055 | 3 | ;;; Additional stream protocol. |
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4 | ;;; |
5 | ;;; (c) 2009 Straylight/Edgeware | |
6 | ;;; | |
7 | ||
8 | ;;;----- Licensing notice --------------------------------------------------- | |
9 | ;;; | |
e0808c47 | 10 | ;;; This file is part of the Sensible Object Design, an object system for C. |
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11 | ;;; |
12 | ;;; SOD is free software; you can redistribute it and/or modify | |
13 | ;;; it under the terms of the GNU General Public License as published by | |
14 | ;;; the Free Software Foundation; either version 2 of the License, or | |
15 | ;;; (at your option) any later version. | |
16 | ;;; | |
17 | ;;; SOD is distributed in the hope that it will be useful, | |
18 | ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | ;;; GNU General Public License for more details. | |
21 | ;;; | |
22 | ;;; You should have received a copy of the GNU General Public License | |
23 | ;;; along with SOD; if not, write to the Free Software Foundation, | |
24 | ;;; Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
25 | ||
dea4d055 | 26 | (cl:in-package #:sod-parser) |
abdf50aa | 27 | |
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28 | ;;;-------------------------------------------------------------------------- |
29 | ;;; Discovery of file names. | |
abdf50aa | 30 | |
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31 | (export 'stream-pathname) |
32 | (defgeneric stream-pathname (stream) | |
33 | (:documentation | |
34 | "Returns the pathname of the file that STREAM is open on. | |
abdf50aa | 35 | |
dea4d055 | 36 | If STREAM is open on a file, then return the pathname of that file. |
3109662a | 37 | Otherwise return nil.") |
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38 | |
39 | ;; Provide some default methods. Most streams don't have a pathname. | |
40 | ;; File-based streams provide a pathname, but it's usually been merged with | |
ea578bb4 | 41 | ;; `*default-pathname-defaults*' or some such, which has made it absolute, |
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42 | ;; which isn't ideal. We'll hack around this in more useful classes later. |
43 | (:method ((stream stream)) nil) | |
44 | (:method ((stream file-stream)) (pathname stream))) | |
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45 | |
46 | ;;;----- That's all, folks -------------------------------------------------- |