1#  Copyright 2020 Northern.tech AS
2
3#  This file is part of CFEngine 3 - written and maintained by Northern.tech AS.
4
5#  This program is free software; you can redistribute it and/or modify it
6#  under the terms of the GNU General Public License as published by the
7#  Free Software Foundation; version 3.
8
9#  This program is distributed in the hope that it will be useful,
10#  but WITHOUT ANY WARRANTY; without even the implied warranty of
11#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12#  GNU General Public License for more details.
13
14# You should have received a copy of the GNU General Public License
15# along with this program; if not, write to the Free Software
16# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
17
18# To the extent this program is licensed as part of the Enterprise
19# versions of Cfengine, the applicable Commercial Open Source License
20# (COSL) may apply to this file if you as a licensee so wish it. See
21# included file COSL.txt.
22
23#+begin_src cfengine3
24bundle agent main
25{
26  vars:
27      # global regex replace A with B
28      "AB" string => regex_replace("This has AAA rating", "A", "B", "g");
29      # global regex replace [Aa] with B (case insensitive)
30      "AaB" string => regex_replace("This has AAA rating", "A", "B", "gi");
31      # global replace every three characters with [cap=thecharacters] using $1
32      "cap123" string => regex_replace("abcdefghijklmn", "(...)", "[cap=$1]", "g");
33      # multiple captures using \1 \2 (just like $1 $2 but can only go up to \9)
34      "path_breakdown" string => regex_replace("/a/b/c/example.txt", "(.+)/(.+)", "dirname = \1 file basename = \2", "");
35
36  reports:
37      # in order, the above...
38      "AB replacement = '$(AB)'";
39      "AaB replacement = '$(AaB)'";
40      "cap123 replacement = '$(cap123)'";
41      "path_breakdown replacement = '$(path_breakdown)'";
42}
43#+end_src
44###############################################################################
45#+begin_src example_output
46#@ ```
47#@ R: AB replacement = 'This has BBB rating'
48#@ R: AaB replacement = 'This hBs BBB rBting'
49#@ R: cap123 replacement = '[cap=abc][cap=def][cap=ghi][cap=jkl]mn'
50#@ R: path_breakdown replacement = 'dirname = /a/b/c file basename = example.txt'
51#@ ```
52#+end_src
53