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# Copyright 2021 Northern.tech AS
# This file is part of CFEngine 3 - written and maintained by Northern.tech AS.
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; version 3.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
# To the extent this program is licensed as part of the Enterprise
# versions of Cfengine, the applicable Commercial Open Source License
# (COSL) may apply to this file if you as a licensee so wish it. See
# included file COSL.txt.
##+begin_src prep
#@ ```
#@ printf "[general]\n" > /tmp/instance.cfg
#@ printf "guid = 9CB197F0-4569-446A-A987-1DDEC1205F6B\n" >> /tmp/instance.cfg
#@ printf "port=5308" >> /tmp/instance.cfg
#@ ```
#+end_src
##############################################################################
#+begin_src cfengine3
bundle agent main
{
vars:
# the returned data container is a key-value map:
# the whole matched string is put in key "0"
# the first three characters are put in key "name1"
# the next three characters go into key "2" (the capture has no name)
# the next two characters go into key "3" (the capture has no name)
# then the dash is ignored
# then three characters are put in key "name2"
# then another dash is ignored
# the next three characters go into key "5" (the capture has no name)
# anything else is ignored
"parsed" data => data_regextract("^(?<name1>...)(...)(..)-(?<name2>...)-(..).*", "abcdef12-345-67andsoon");
"parsed_str" string => format("%S", parsed);
# Illustrating multiline regular expression
"instance_guid_until_end_of_string"
data => data_regextract( "^guid\s?+=\s?+(?<value>.*)$",
readfile( "/tmp/instance.cfg", 200));
"instance_guid"
data => data_regextract( "^guid\s+=\s+(?<value>[^\n]*)",
readfile( "/tmp/instance.cfg", 200));
"instance_port"
data => data_regextract( "^port\s?+=\s?+(?<value>[^\n]*)",
readfile( "/tmp/instance.cfg", 200));
reports:
"$(this.bundle): parsed[0] '$(parsed[0])' parses into: $(parsed_str)";
"$(this.bundle): instance_guid_until_end_of_string[value] '$(instance_guid_until_end_of_string[value])'";
"$(this.bundle): instance_guid[value] '$(instance_guid[value])'";
"$(this.bundle): instance_port[value] '$(instance_port[value])'";
}
#+end_src
###############################################################################
#+begin_src example_output
#@ ```
#@ R: main: parsed[0] 'abcdef12-345-67andsoon' parses into: {"0":"abcdef12-345-67andsoon","2":"def","3":"12","5":"67","name1":"abc","name2":"345"}
#@ R: main: instance_guid_until_end_of_string[value] '9CB197F0-4569-446A-A987-1DDEC1205F6B
#@ port=5308'
#@ R: main: instance_guid[value] '9CB197F0-4569-446A-A987-1DDEC1205F6B'
#@ R: main: instance_port[value] '5308'
#@ ```
#+end_src
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