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comparison lisp/tl/file-detect.el @ 70:131b0175ea99 r20-0b30

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Import from CVS: tag r20-0b30
author cvs
date Mon, 13 Aug 2007 09:02:59 +0200
parents e04119814345
children c0c698873ce1
comparison
equal deleted inserted replaced
69:804d1389bcd6 70:131b0175ea99
1 ;;; file-detect.el --- Emacs Lisp file detection utility 1 ;;; file-detect.el --- Emacs Lisp file detection utility
2 2
3 ;; Copyright (C) 1996,1997 Free Software Foundation, Inc. 3 ;; Copyright (C) 1996 Free Software Foundation, Inc.
4 4
5 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp> 5 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
6 ;; Version: 6 ;; Version:
7 ;; $Id: file-detect.el,v 1.6 1997/03/16 05:55:39 steve Exp $ 7 ;; $Id: file-detect.el,v 1.1.1.1 1996/12/18 22:43:38 steve Exp $
8 ;; Keywords: install, module 8 ;; Keywords: install, module
9 9
10 ;; This file is part of tl (Tiny Library). 10 ;; This file is part of tl (Tiny Library).
11 11
12 ;; This program is free software; you can redistribute it and/or 12 ;; This program is free software; you can redistribute it and/or
18 ;; WITHOUT ANY WARRANTY; without even the implied warranty of 18 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 ;; General Public License for more details. 20 ;; General Public License for more details.
21 21
22 ;; You should have received a copy of the GNU General Public License 22 ;; You should have received a copy of the GNU General Public License
23 ;; along with GNU Emacs; see the file COPYING. If not, write to the 23 ;; along with This program; see the file COPYING. If not, write to
24 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, 24 ;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
25 ;; Boston, MA 02111-1307, USA. 25 ;; Boston, MA 02111-1307, USA.
26 26
27 ;;; Code: 27 ;;; Code:
28 28
29 (defvar default-load-path load-path) 29 (defvar default-load-path load-path)
63 (append load-path (list p)) 63 (append load-path (list p))
64 (cons p load-path) 64 (cons p load-path)
65 )) 65 ))
66 ))) 66 )))
67 67
68 (defun add-latest-path (pattern &optional all-paths)
69 "Add latest path matched by PATTERN to `load-path'
70 if it exists under `default-load-path' directories
71 and it does not exist in `load-path'.
72
73 If optional argument ALL-PATHS is specified, it is searched from all
74 of load-path instead of default-load-path. [file-detect.el]"
75 (let ((path (get-latest-path pattern all-paths)))
76 (if path
77 (add-to-list 'load-path path)
78 )))
79
80 (defun get-latest-path (pat &optional all-paths) 68 (defun get-latest-path (pat &optional all-paths)
81 "Return latest directory in default-load-path 69 "Return latest directory in default-load-path
82 which is matched to regexp PAT. 70 which is matched to regexp PAT.
83 If optional argument ALL-PATHS is specified, 71 If optional argument ALL-PATHS is specified,
84 it is searched from all of load-path instead of default-load-path. 72 it is searched from all of load-path instead of default-load-path.
100 )) 88 ))
101 (setq paths (cdr paths)) 89 (setq paths (cdr paths))
102 )))) 90 ))))
103 91
104 (defun file-installed-p (file &optional paths) 92 (defun file-installed-p (file &optional paths)
105 "Return absolute-path of FILE if FILE exists in PATHS. 93 "Return t if FILE exists in PATHS.
106 If PATHS is omitted, `load-path' is used. [file-detect.el]" 94 If PATHS is omitted, `load-path' is used. [file-detect.el]"
107 (if (null paths) 95 (if (null paths)
108 (setq paths load-path) 96 (setq paths load-path)
109 ) 97 )
110 (catch 'tag 98 (catch 'tag
115 (throw 'tag path) 103 (throw 'tag path)
116 ) 104 )
117 (setq paths (cdr paths)) 105 (setq paths (cdr paths))
118 )))) 106 ))))
119 107
120 (defvar exec-suffix-list '("")
121 "*List of suffixes for executable.")
122
123 (defun exec-installed-p (file &optional paths suffixes)
124 "Return absolute-path of FILE if FILE exists in PATHS.
125 If PATHS is omitted, `exec-path' is used.
126 If suffixes is omitted, `exec-suffix-list' is used. [file-detect.el]"
127 (or paths
128 (setq paths exec-path)
129 )
130 (or suffixes
131 (setq suffixes exec-suffix-list)
132 )
133 (catch 'tag
134 (while paths
135 (let ((stem (expand-file-name file (car paths)))
136 (sufs suffixes)
137 )
138 (while sufs
139 (let ((file (concat stem (car sufs))))
140 (if (file-exists-p file)
141 (throw 'tag file)
142 ))
143 (setq sufs (cdr sufs))
144 ))
145 (setq paths (cdr paths))
146 )))
147
148 (defun module-installed-p (module &optional paths) 108 (defun module-installed-p (module &optional paths)
149 "Return t if module is provided or exists in PATHS. 109 "Return t if module is provided or exists in PATHS.
150 If PATHS is omitted, `load-path' is used. [file-detect.el]" 110 If PATHS is omitted, `load-path' is used. [file-detect.el]"
151 (or (featurep module) 111 (or (featurep module)
152 (exec-installed-p (symbol-name module) load-path '(".elc" ".el")) 112 (let ((name (symbol-name module)))
153 )) 113 (if (null paths)
114 (setq paths load-path)
115 )
116 (catch 'tag
117 (while paths
118 (let ((file (expand-file-name name (car paths))))
119 (let ((elc-file (concat file ".elc")))
120 (if (file-exists-p elc-file)
121 (throw 'tag elc-file)
122 ))
123 (let ((el-file (concat file ".el")))
124 (if (file-exists-p el-file)
125 (throw 'tag el-file)
126 ))
127 (if (file-exists-p file)
128 (throw 'tag file)
129 )
130 )
131 (setq paths (cdr paths))
132 )))))
154 133
155 134
156 ;;; @ end 135 ;;; @ end
157 ;;; 136 ;;;
158 137