Mercurial > hg > octave-nkf

annotate scripts/strings/regexptranslate.m @ 8627:fdd1cefd3714

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Add missing files to SOURCES in plot/Makefile.in
author Kai Habel
date Thu, 29 Jan 2009 12:55:16 -0500
parents 502e58a0d44f
children eb63fbe60fab
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
7629
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
1 ## Copyright (C) 2008 David Bateman
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
2 ##
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
3 ## This file is part of Octave.
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
4 ##
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
5 ## Octave is free software; you can redistribute it and/or modify it
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
6 ## under the terms of the GNU General Public License as published by
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
7 ## the Free Software Foundation; either version 3 of the License, or (at
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
8 ## your option) any later version.
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
9 ##
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
10 ## Octave is distributed in the hope that it will be useful, but
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
13 ## General Public License for more details.
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
14 ##
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
15 ## You should have received a copy of the GNU General Public License
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
16 ## along with Octave; see the file COPYING. If not, see
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
17 ## <http://www.gnu.org/licenses/>.
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
18
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
19 ## -*- texinfo -*-
7983
91d020444da7 Document regexptranslate
David Bateman <dbateman@free.fr>
parents: 7629
diff changeset
20 ## @deftypefn {Function File} {} regexptranslate (@var{op}, @var{s})
91d020444da7 Document regexptranslate
David Bateman <dbateman@free.fr>
parents: 7629
diff changeset
21 ## Translate a string for use in a regular expression. This might
91d020444da7 Document regexptranslate
David Bateman <dbateman@free.fr>
parents: 7629
diff changeset
22 ## include either wildcard replacement or special character escaping.
91d020444da7 Document regexptranslate
David Bateman <dbateman@free.fr>
parents: 7629
diff changeset
23 ## The behavior can be controlled by the @var{op} that can have the
91d020444da7 Document regexptranslate
David Bateman <dbateman@free.fr>
parents: 7629
diff changeset
24 ## values
91d020444da7 Document regexptranslate
David Bateman <dbateman@free.fr>
parents: 7629
diff changeset
25 ##
91d020444da7 Document regexptranslate
David Bateman <dbateman@free.fr>
parents: 7629
diff changeset
26 ## @table @asis
91d020444da7 Document regexptranslate
David Bateman <dbateman@free.fr>
parents: 7629
diff changeset
27 ## @item "wildcard"
91d020444da7 Document regexptranslate
David Bateman <dbateman@free.fr>
parents: 7629
diff changeset
28 ## The wildcard characters @code{.}, @code{*} and @code{?} are replaced
8442
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
29 ## with wildcards that are appropriate for a regular expression. For example:
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
30 ## @example
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
31 ## @group
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
32 ## regexptranslate ("wildcard", "*.m")
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
33 ## @result{} ".*\.m"
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
34 ## @end group
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
35 ## @end example
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
36 ##
7983
91d020444da7 Document regexptranslate
David Bateman <dbateman@free.fr>
parents: 7629
diff changeset
37 ## @item "escape"
91d020444da7 Document regexptranslate
David Bateman <dbateman@free.fr>
parents: 7629
diff changeset
38 ## The characters @code{$.?[]}, that have special meaning for regular
8442
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
39 ## expressions are escaped so that they are treated literally. For example:
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
40 ## @example
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
41 ## @group
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
42 ## regexptranslate ("escape", "12.5")
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
43 ## @result{} "12\.5"
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
44 ## @end group
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
45 ## @end example
7983
91d020444da7 Document regexptranslate
David Bateman <dbateman@free.fr>
parents: 7629
diff changeset
46 ## @end table
8442
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
47 ## @seealso{regexp, regexpi, regexprep}
7629
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
48 ## @end deftypefn
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
49
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
50 function y = regexptranslate (op, x)
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
51
8442
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
52 if nargin != 2
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
53 print_usage ();
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
54 endif
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
55
7629
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
56 if (ischar (op))
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
57 op = tolower (op);
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
58 if (strcmp ("wildcard", op))
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
59 y = regexprep (regexprep (regexprep (x, "\\.", "\\."), "\\*",
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
60 ".*"), "\\?", ".");
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
61 elseif (strcmp ("escape", op))
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
62 ch = {'\$', '\.', '\?', '\[', '\]'};
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
63 y = x;
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
64 for i = 1 : length (ch)
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
65 y = regexprep (y, ch{i}, ch{i});
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
66 endfor
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
67 else
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
68 error ("regexptranslate: unexpected operation");
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
69 endif
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
70 else
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
71 error ("regexptranslate: expecting operation to be a string");
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
72 endif
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
73 endfunction
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
74
8442
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
75 %!error <Invalid call to regexptranslate> regexptranslate ();
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
76 %!error <Invalid call to regexptranslate> regexptranslate ("wildcard");
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
77 %!error <Invalid call to regexptranslate> regexptranslate ("a", "b", "c");
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
78 %!error <unexpected operation> regexptranslate ("foo", "abc");
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
79 %!error <expecting operation to be a string> regexptranslate (10, "abc");
7629
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
80 %!assert (regexptranslate ("wildcard", "/a*b?c."), "/a.*b.c\\.")
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
81 %!assert (regexptranslate ("escape", '$.?[]'), '\$\.\?\[\]')