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date Mon, 13 Aug 2007 08:46:56 +0200
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3:30df88044ec6 4:b82b59fe008d
1 ;;; tl-str.el --- Emacs Lisp Library module about string
2
3 ;; Copyright (C) 1995,1996 Free Software Foundation, Inc.
4
5 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
6 ;; Version:
7 ;; $Id: tl-str.el,v 1.1.1.1 1996/12/18 03:55:31 steve Exp $
8 ;; Keywords: string
9
10 ;; This file is part of tl (Tiny Library).
11
12 ;; This program is free software; you can redistribute it and/or
13 ;; modify it under the terms of the GNU General Public License as
14 ;; published by the Free Software Foundation; either version 2, or (at
15 ;; your option) any later version.
16
17 ;; This program is distributed in the hope that it will be useful, but
18 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 ;; General Public License for more details.
21
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
24 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
25 ;; Boston, MA 02111-1307, USA.
26
27 ;;; Code:
28
29 (require 'emu)
30 (require 'tl-list)
31
32
33 ;;; @ converter
34 ;;;
35
36 (defun expand-char-ranges (str)
37 (let ((i 0)
38 (len (length str))
39 chr pchr nchr
40 (dest ""))
41 (while (< i len)
42 (setq chr (elt str i))
43 (cond ((and pchr (eq chr ?-))
44 (setq pchr (1+ pchr))
45 (setq i (1+ i))
46 (setq nchr (elt str i))
47 (while (<= pchr nchr)
48 (setq dest (concat dest (char-to-string pchr)))
49 (setq pchr (1+ pchr))
50 )
51 )
52 (t
53 (setq dest (concat dest (char-to-string chr)))
54 ))
55 (setq pchr chr)
56 (setq i (1+ i))
57 )
58 dest))
59
60
61 ;;; @ space
62 ;;;
63
64 (defun eliminate-top-spaces (str)
65 "Eliminate top sequence of space or tab and return it. [tl-str.el]"
66 (if (string-match "^[ \t]+" str)
67 (substring str (match-end 0))
68 str))
69
70 (defun eliminate-last-spaces (str)
71 "Eliminate last sequence of space or tab and return it. [tl-str.el]"
72 (if (string-match "[ \t]+$" str)
73 (substring str 0 (match-beginning 0))
74 str))
75
76 (defun replace-space-with-underline (str)
77 (mapconcat (function
78 (lambda (arg)
79 (char-to-string
80 (if (eq arg ?\ )
81 ?_
82 arg)))) str "")
83 )
84
85
86 ;;; @ version
87 ;;;
88
89 (defun version-to-list (str)
90 (if (string-match "[0-9]+" str)
91 (let ((dest
92 (list
93 (string-to-number
94 (substring str (match-beginning 0)(match-end 0))
95 ))))
96 (setq str (substring str (match-end 0)))
97 (while (string-match "^\\.[0-9]+" str)
98 (setq dest
99 (cons
100 (string-to-number
101 (substring str (1+ (match-beginning 0))(match-end 0)))
102 dest))
103 (setq str (substring str (match-end 0)))
104 )
105 (nreverse dest)
106 )))
107
108 (defun version< (v1 v2)
109 (or (listp v1)
110 (setq v1 (version-to-list v1))
111 )
112 (or (listp v2)
113 (setq v2 (version-to-list v2))
114 )
115 (catch 'tag
116 (while (and v1 v2)
117 (cond ((< (car v1)(car v2))
118 (throw 'tag v2)
119 )
120 ((> (car v1)(car v2))
121 (throw 'tag nil)
122 ))
123 (setq v1 (cdr v1)
124 v2 (cdr v2))
125 )
126 v2))
127
128 (defun version<= (v1 v2)
129 (or (listp v1)
130 (setq v1 (version-to-list v1))
131 )
132 (or (listp v2)
133 (setq v2 (version-to-list v2))
134 )
135 (catch 'tag
136 (while (and v1 v2)
137 (cond ((< (car v1)(car v2))
138 (throw 'tag v2)
139 )
140 ((> (car v1)(car v2))
141 (throw 'tag nil)
142 ))
143 (setq v1 (cdr v1)
144 v2 (cdr v2))
145 )
146 (or v2 (and (null v1)(null v2)))
147 ))
148
149 (defun version> (v1 v2)
150 (or (listp v1)
151 (setq v1 (version-to-list v1))
152 )
153 (or (listp v2)
154 (setq v2 (version-to-list v2))
155 )
156 (catch 'tag
157 (while (and v1 v2)
158 (cond ((> (car v1)(car v2))
159 (throw 'tag v1)
160 )
161 ((< (car v1)(car v2))
162 (throw 'tag nil)
163 ))
164 (setq v1 (cdr v1)
165 v2 (cdr v2))
166 )
167 v1))
168
169 (defun version>= (v1 v2)
170 (or (listp v1)
171 (setq v1 (version-to-list v1))
172 )
173 (or (listp v2)
174 (setq v2 (version-to-list v2))
175 )
176 (catch 'tag
177 (while (and v1 v2)
178 (cond ((> (car v1)(car v2))
179 (throw 'tag v1)
180 )
181 ((< (car v1)(car v2))
182 (throw 'tag nil)
183 ))
184 (setq v1 (cdr v1)
185 v2 (cdr v2))
186 )
187 (or v1 (and (null v1)(null v2)))
188 ))
189
190
191 ;;; @ RCS version
192 ;;;
193
194 (defun get-version-string (id)
195 "Return a version-string from RCS ID. [tl-str.el]"
196 (and (string-match ",v \\([0-9][0-9.][0-9.]+\\)" id)
197 (substring id (match-beginning 1)(match-end 1))
198 ))
199
200
201 ;;; @ file name
202 ;;;
203
204 (defun file-name-non-extension (filename)
205 (if (string-match "\\.[^.]+$" filename)
206 (substring filename 0 (match-beginning 0))
207 filename))
208
209 (defvar filename-special-char-range
210 (nconc '((0 . 31))
211 (string-to-int-list "!\"$")
212 (list (cons (char-int ?&) (char-int ?*)))
213 (string-to-int-list "/;<>?")
214 (list (cons (char-int ?\[) (char-int ?^)))
215 (string-to-int-list "`")
216 (list (cons (char-int ?{) (char-int ?})))
217 '((127 . 159)))
218 "*Range of characters which is not available in file name. [tl-str.el]")
219
220 (defvar filename-space-char-range '(9 32 160)
221 "*Range of characters which indicates space. These characters
222 are replaced to `_' by function `replace-as-filename' [tl-str.el]")
223
224 (defun replace-as-filename (str)
225 "Return safety filename from STR. [tl-str.el]"
226 (let (sf)
227 (mapconcat (function
228 (lambda (chr)
229 (cond ((member-of-range chr filename-space-char-range)
230 (if sf
231 ""
232 (setq sf t)
233 "_"))
234 ((member-of-range chr filename-special-char-range)
235 "")
236 (t
237 (setq sf nil)
238 (char-to-string chr)
239 ))
240 ))
241 (string-to-char-list str)
242 "")))
243
244
245 ;;; @ symbol
246 ;;;
247
248 (defun symbol-concat (&rest args)
249 "Return a symbol whose name is concatenation of arguments ARGS
250 which are string or symbol. [tl-str.el]"
251 (intern (apply (function concat)
252 (mapcar (function
253 (lambda (s)
254 (cond ((symbolp s) (symbol-name s))
255 ((stringp s) s)
256 )
257 ))
258 args)))
259 )
260
261
262 ;;; @ matching
263 ;;;
264
265 (defun top-string-match (pat str)
266 "Return a list (MATCHED REST) if string PAT is top substring of
267 string STR. [tl-str.el]"
268 (if (string-match
269 (concat "^" (regexp-quote pat))
270 str)
271 (list pat (substring str (match-end 0)))
272 ))
273
274 (defun middle-string-match (pat str)
275 "Return a list (PREVIOUS MATCHED REST) if string PAT is found in
276 string STR. [tl-str.el]"
277 (if (equal pat str)
278 (list nil pat nil)
279 (if (string-match (regexp-quote pat) str)
280 (let ((b (match-beginning 0))
281 (e (match-end 0)) )
282 (list (if (not (= b 0))
283 (substring str 0 b)
284 )
285 pat
286 (if (> (length str) e)
287 (substring str e)
288 )
289 )))))
290
291 (defun re-top-string-match (pat str)
292 "Return a list (MATCHED REST) if regexp PAT is matched as top
293 substring of string STR. [tl-str.el]"
294 (if (string-match (concat "^" pat) str)
295 (let ((e (match-end 0)))
296 (list (substring str 0 e)(substring str e))
297 )))
298
299
300 ;;; @ compare
301 ;;;
302
303 (defun string-compare-from-top (str1 str2)
304 (let* ((len1 (length str1))
305 (len2 (length str2))
306 (len (min len1 len2))
307 (p 0)
308 c1 c2)
309 (while (and (< p len)
310 (progn
311 (setq c1 (sref str1 p)
312 c2 (sref str2 p))
313 (eq c1 c2)
314 ))
315 (setq p (+ p (char-length c1)))
316 )
317 (and (> p 0)
318 (let ((matched (substring str1 0 p))
319 (r1 (and (< p len1)(substring str1 p)))
320 (r2 (and (< p len2)(substring str2 p)))
321 )
322 (if (eq r1 r2)
323 matched
324 (list 'seq matched (list 'or r1 r2))
325 )))))
326
327
328 ;;; @ regexp
329 ;;;
330
331 (defun regexp-* (regexp)
332 (concat regexp "*"))
333
334 (defun regexp-or (&rest args)
335 (concat "\\(" (mapconcat (function identity) args "\\|") "\\)"))
336
337
338 ;;; @ end
339 ;;;
340
341 (provide 'tl-str)
342
343 ;;; tl-str.el ends here