Mercurial > hg > xemacs-beta

comparison lisp/tl/filename.el @ 8:4b173ad71786 r19-15b5

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Import from CVS: tag r19-15b5
author cvs
date Mon, 13 Aug 2007 08:47:35 +0200
parents
children 49a24b4fd526
comparison
equal deleted inserted replaced
7:c153ca296910 8:4b173ad71786
1 ;;; filename.el --- file name filter
2
3 ;; Copyright (C) 1996 MORIOKA Tomohiko
4
5 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
6 ;; Version: $Id: filename.el,v 1.1 1996/12/22 00:37:04 steve Exp $
7 ;; Keywords: string, file name
8
9 ;; This file is part of tl (Tiny Library).
10
11 ;; This program is free software; you can redistribute it and/or
12 ;; modify it under the terms of the GNU General Public License as
13 ;; published by the Free Software Foundation; either version 2, or (at
14 ;; your option) any later version.
15
16 ;; This program is distributed in the hope that it will be useful, but
17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 ;; General Public License for more details.
20
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs; see the file COPYING. If not, write to the
23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
24 ;; Boston, MA 02111-1307, USA.
25
26 ;;; Code:
27
28 (require 'tl-list)
29 (require 'tl-str)
30
31
32 ;;; @ variables
33 ;;;
34
35 (defvar filename-limit-length 21)
36
37 (defvar filename-replacement-alist
38 (list
39 (cons (string-to-char-list " \t") "_")
40 (cons (string-to-char-list (expand-char-ranges "!-*,/:;<>?[-^`{-~")) "_")
41 '(filename-control-p . "")
42 ))
43
44 (defvar filename-filters
45 (nconc
46 (and (file-installed-p "kakasi" exec-path)
47 '(filename-japanese-to-roman-string)
48 )
49 '(filename-special-filter
50 filename-eliminate-top-low-lines
51 filename-canonicalize-low-lines
52 filename-maybe-truncate-by-size
53 filename-eliminate-bottom-low-lines
54 )))
55
56
57 ;;; @ filters
58 ;;;
59
60 (defun filename-japanese-to-roman-string (str)
61 (save-excursion
62 (set-buffer (get-buffer-create " *temp kakasi*"))
63 (erase-buffer)
64 (insert str)
65 (call-process-region (point-min)(point-max) "kakasi" t t t
66 "-Ha" "-Ka" "-Ja" "-Ea" "-ka")
67 (buffer-string)
68 ))
69
70 (defun filename-control-p (character)
71 (let ((code (char-int character)))
72 (or (< code 32)(= code 127))
73 ))
74
75 (defun filename-special-filter (string)
76 (let (dest
77 (i 0)
78 (len (length string))
79 (b 0)
80 )
81 (while (< i len)
82 (let* ((chr (sref string i))
83 (ret (ASSOC chr filename-replacement-alist
84 :test (function
85 (lambda (chr key)
86 (if (functionp key)
87 (funcall key chr)
88 (memq chr key)
89 )
90 ))))
91 )
92 (if ret
93 (setq dest (concat dest (substring string b i)(cdr ret))
94 i (+ i (char-length chr))
95 b i)
96 (setq i (+ i (char-length chr)))
97 )))
98 (concat dest (substring string b))
99 ))
100
101 (defun filename-eliminate-top-low-lines (string)
102 (if (string-match "^_+" string)
103 (substring string (match-end 0))
104 string))
105
106 (defun filename-canonicalize-low-lines (string)
107 (let (dest)
108 (while (string-match "__+" string)
109 (setq dest (concat dest (substring string 0 (1+ (match-beginning 0)))))
110 (setq string (substring string (match-end 0)))
111 )
112 (concat dest string)
113 ))
114
115 (defun filename-maybe-truncate-by-size (string)
116 (if (and (> (length string) filename-limit-length)
117 (string-match "_" string filename-limit-length)
118 )
119 (substring string 0 (match-beginning 0))
120 string))
121
122 (defun filename-eliminate-bottom-low-lines (string)
123 (if (string-match "_+$" string)
124 (substring string 0 (match-beginning 0))
125 string))
126
127
128 ;;; @ interface
129 ;;;
130
131 (defun replace-as-filename (string)
132 "Return safety filename from STRING. [filename.el]"
133 (poly-funcall filename-filters string)
134 )
135
136
137 ;;; @ end
138 ;;;
139
140 (provide 'filename)
141
142 ;;; filename.el ends here