Mercurial > hg > octave-nkf

annotate scripts/strings/regexptranslate.m @ 20720:315b7d51d6c8

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
randi.m: Display warnings in case of range exceedings.
author Kai T. Ohlhus <k.ohlhus@gmail.com>
date Wed, 23 Sep 2015 15:31:34 +0200
parents 89616a98b02e
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
19898
4197fc428c7d maint: Update copyright notices for 2015.
John W. Eaton <jwe@octave.org>
parents: 19790
diff changeset
1 ## Copyright (C) 2008-2015 David Bateman
7629
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})
20374
df437a52bcaf doc: Update more docstrings to have one sentence summary as first line.
Rik <rik@octave.org>
parents: 20038
diff changeset
21 ## Translate a string for use in a regular expression.
df437a52bcaf doc: Update more docstrings to have one sentence summary as first line.
Rik <rik@octave.org>
parents: 20038
diff changeset
22 ##
df437a52bcaf doc: Update more docstrings to have one sentence summary as first line.
Rik <rik@octave.org>
parents: 20038
diff changeset
23 ## This may include either wildcard replacement or special character escaping.
df437a52bcaf doc: Update more docstrings to have one sentence summary as first line.
Rik <rik@octave.org>
parents: 20038
diff changeset
24 ##
13184
8a124aeb7ded regexptranslate.m: Correctly escape *all* regular expression special characters.
Rik <octave@nomad.inbox5.com>
parents: 12469
diff changeset
25 ## The behavior is controlled by @var{op} which can take the following
7983
91d020444da7 Document regexptranslate
David Bateman <dbateman@free.fr>
parents: 7629
diff changeset
26 ## values
91d020444da7 Document regexptranslate
David Bateman <dbateman@free.fr>
parents: 7629
diff changeset
27 ##
91d020444da7 Document regexptranslate
David Bateman <dbateman@free.fr>
parents: 7629
diff changeset
28 ## @table @asis
17281
bc924baa2c4e doc: Add new @qcode macro for code samples which are quoted.
Rik <rik@octave.org>
parents: 14560
diff changeset
29 ## @item @qcode{"wildcard"}
20374
df437a52bcaf doc: Update more docstrings to have one sentence summary as first line.
Rik <rik@octave.org>
parents: 20038
diff changeset
30 ## The wildcard characters @code{.}, @code{*}, and @code{?} are replaced with
df437a52bcaf doc: Update more docstrings to have one sentence summary as first line.
Rik <rik@octave.org>
parents: 20038
diff changeset
31 ## wildcards that are appropriate for a regular expression. For example:
10821
693e22af08ae Grammarcheck documentation of m-files
Rik <octave@nomad.inbox5.com>
parents: 10549
diff changeset
32 ##
8442
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
33 ## @example
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
34 ## @group
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
35 ## regexptranslate ("wildcard", "*.m")
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
36 ## @result{} ".*\.m"
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
37 ## @end group
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
38 ## @end example
11587
c792872f8942 all script files: untabify and strip trailing whitespace
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
39 ##
17281
bc924baa2c4e doc: Add new @qcode macro for code samples which are quoted.
Rik <rik@octave.org>
parents: 14560
diff changeset
40 ## @item @qcode{"escape"}
7983
91d020444da7 Document regexptranslate
David Bateman <dbateman@free.fr>
parents: 7629
diff changeset
41 ## The characters @code{$.?[]}, that have special meaning for regular
9036
58604c45ca74 Cleanup of data types related documentation
Rik <rdrider0-list@yahoo.com>
parents: 8920
diff changeset
42 ## expressions are escaped so that they are treated literally. For example:
10821
693e22af08ae Grammarcheck documentation of m-files
Rik <octave@nomad.inbox5.com>
parents: 10549
diff changeset
43 ##
8442
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
44 ## @example
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
45 ## @group
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
46 ## 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
47 ## @result{} "12\.5"
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
48 ## @end group
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
49 ## @end example
10821
693e22af08ae Grammarcheck documentation of m-files
Rik <octave@nomad.inbox5.com>
parents: 10549
diff changeset
50 ##
7983
91d020444da7 Document regexptranslate
David Bateman <dbateman@free.fr>
parents: 7629
diff changeset
51 ## @end table
8442
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
52 ## @seealso{regexp, regexpi, regexprep}
7629
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
53 ## @end deftypefn
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
54
11469
c776f063fefe Overhaul m-script files to use common variable name between code and documentation.
Rik <octave@nomad.inbox5.com>
parents: 10821
diff changeset
55 function y = regexptranslate (op, s)
11587
c792872f8942 all script files: untabify and strip trailing whitespace
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
56
14552
86854d032a37 maint: miscellaneous style fixes for .m files
John W. Eaton <jwe@octave.org>
parents: 14138
diff changeset
57 if (nargin != 2)
8442
502e58a0d44f Fix docstrings, add examples, references and tests to string functions
Thorsten Meyer <thorsten.meyier@gmx.de>
parents: 7983
diff changeset
58 print_usage ();
11587
c792872f8942 all script files: untabify and strip trailing whitespace
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
59 endif
c792872f8942 all script files: untabify and strip trailing whitespace
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
60
13184
8a124aeb7ded regexptranslate.m: Correctly escape *all* regular expression special characters.
Rik <octave@nomad.inbox5.com>
parents: 12469
diff changeset
61 if (! ischar (op))
8a124aeb7ded regexptranslate.m: Correctly escape *all* regular expression special characters.
Rik <octave@nomad.inbox5.com>
parents: 12469
diff changeset
62 error ("regexptranslate: operation OP must be a string");
8a124aeb7ded regexptranslate.m: Correctly escape *all* regular expression special characters.
Rik <octave@nomad.inbox5.com>
parents: 12469
diff changeset
63 endif
8a124aeb7ded regexptranslate.m: Correctly escape *all* regular expression special characters.
Rik <octave@nomad.inbox5.com>
parents: 12469
diff changeset
64
8a124aeb7ded regexptranslate.m: Correctly escape *all* regular expression special characters.
Rik <octave@nomad.inbox5.com>
parents: 12469
diff changeset
65 op = tolower (op);
8a124aeb7ded regexptranslate.m: Correctly escape *all* regular expression special characters.
Rik <octave@nomad.inbox5.com>
parents: 12469
diff changeset
66 if (strcmp ("wildcard", op))
20390
89616a98b02e regexptranslate.m: Fix 'escape' option list of special chars (bug #45084).
Rik <rik@octave.org>
parents: 20374
diff changeset
67 y = strrep (strrep (strrep (s, '.', '\.'),
89616a98b02e regexptranslate.m: Fix 'escape' option list of special chars (bug #45084).
Rik <rik@octave.org>
parents: 20374
diff changeset
68 '*', '.*'),
89616a98b02e regexptranslate.m: Fix 'escape' option list of special chars (bug #45084).
Rik <rik@octave.org>
parents: 20374
diff changeset
69 '?', '.');
13184
8a124aeb7ded regexptranslate.m: Correctly escape *all* regular expression special characters.
Rik <octave@nomad.inbox5.com>
parents: 12469
diff changeset
70 elseif (strcmp ("escape", op))
20390
89616a98b02e regexptranslate.m: Fix 'escape' option list of special chars (bug #45084).
Rik <rik@octave.org>
parents: 20374
diff changeset
71 y = regexprep (s, '([][(){}.*+?^$|\\])', '\\$1');
7629
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
72 else
13184
8a124aeb7ded regexptranslate.m: Correctly escape *all* regular expression special characters.
Rik <octave@nomad.inbox5.com>
parents: 12469
diff changeset
73 error ("regexptranslate: invalid operation OP");
7629
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
74 endif
13184
8a124aeb7ded regexptranslate.m: Correctly escape *all* regular expression special characters.
Rik <octave@nomad.inbox5.com>
parents: 12469
diff changeset
75
7629
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
76 endfunction
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
77
13184
8a124aeb7ded regexptranslate.m: Correctly escape *all* regular expression special characters.
Rik <octave@nomad.inbox5.com>
parents: 12469
diff changeset
78
7629
cc31c5002c96 Add the regexptranslate function
David Bateman <dbateman@free.fr>
parents:
diff changeset
79 %!assert (regexptranslate ("wildcard", "/a*b?c."), "/a.*b.c\\.")
20390
89616a98b02e regexptranslate.m: Fix 'escape' option list of special chars (bug #45084).
Rik <rik@octave.org>
parents: 20374
diff changeset
80 %!assert (regexptranslate ("escape", '^.?[abc]$'), '\^\.\?\[abc\]\$')
13184
8a124aeb7ded regexptranslate.m: Correctly escape *all* regular expression special characters.
Rik <octave@nomad.inbox5.com>
parents: 12469
diff changeset
81
20038
9fc020886ae9 maint: Clean up m-files to follow Octave coding conventions.
Rik <rik@octave.org>
parents: 19898
diff changeset
82 ## Test input validation
13184
8a124aeb7ded regexptranslate.m: Correctly escape *all* regular expression special characters.
Rik <octave@nomad.inbox5.com>
parents: 12469
diff changeset
83 %!error <Invalid call to regexptranslate> regexptranslate ()
8a124aeb7ded regexptranslate.m: Correctly escape *all* regular expression special characters.
Rik <octave@nomad.inbox5.com>
parents: 12469
diff changeset
84 %!error <Invalid call to regexptranslate> regexptranslate ("wildcard")
8a124aeb7ded regexptranslate.m: Correctly escape *all* regular expression special characters.
Rik <octave@nomad.inbox5.com>
parents: 12469
diff changeset
85 %!error <Invalid call to regexptranslate> regexptranslate ("a", "b", "c")
8a124aeb7ded regexptranslate.m: Correctly escape *all* regular expression special characters.
Rik <octave@nomad.inbox5.com>
parents: 12469
diff changeset
86 %!error <invalid operation> regexptranslate ("foo", "abc")
8a124aeb7ded regexptranslate.m: Correctly escape *all* regular expression special characters.
Rik <octave@nomad.inbox5.com>
parents: 12469
diff changeset
87 %!error <operation OP must be a string> regexptranslate (10, "abc")
8a124aeb7ded regexptranslate.m: Correctly escape *all* regular expression special characters.
Rik <octave@nomad.inbox5.com>
parents: 12469
diff changeset
88