/usr/share/perl5/Config/Model/Backend/PlainFile.pm is in libconfig-model-perl 2.097-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 | #
# This file is part of Config-Model
#
# This software is Copyright (c) 2005-2016 by Dominique Dumont.
#
# This is free software, licensed under:
#
# The GNU Lesser General Public License, Version 2.1, February 1999
#
package Config::Model::Backend::PlainFile;
$Config::Model::Backend::PlainFile::VERSION = '2.097';
use Carp;
use Mouse;
use Config::Model::Exception;
use File::Path;
use Log::Log4perl qw(get_logger :levels);
extends 'Config::Model::Backend::Any';
my $logger = get_logger("Backend::PlainFile");
sub suffix { return ''; }
sub annotation { return 0; }
sub skip_open { 1; }
sub read {
my $self = shift;
my %args = @_;
# args are:
# object => $obj, # Config::Model::Node object
# root => './my_test', # fake root directory, userd for tests
# config_dir => /etc/foo', # absolute path
# file => 'foo.conf', # file name
# file_path => './my_test/etc/foo/foo.conf'
# io_handle => $io # IO::File object
# check => yes|no|skip
my $check = $args{check} || 'yes';
my $dir = $args{config_dir};
my $node = $args{object};
$logger->debug( "called on node", $node->name );
# read data from leaf element from the node
foreach my $elt ( $node->get_element_name() ) {
my $file = $args{root} . $dir . $elt;
$logger->trace("looking for plainfile $file");
my $obj = $args{object}->fetch_element( name => $elt );
my $type = $obj->get_type;
if ( $type eq 'leaf' ) {
$self->read_leaf( $obj, $elt, $check, $file, \%args );
}
elsif ( $type eq 'list' ) {
$self->read_list( $obj, $elt, $check, $file, \%args );
}
elsif ( $type eq 'hash' ) {
$self->read_hash( $obj, $elt, $check, $file, \%args );
}
else {
$logger->debug("PlainFile read skiped $type $elt");
}
}
return 1;
}
#
# New subroutine "open_for_read" extracted - Thu Jul 21 13:36:52 2011.
#
sub open_for_read {
my ( $self, $file, $elt ) = @_;
return unless -e $file;
my $fh = new IO::File;
$fh->open($file) or die "Cannot open $file:$!";
$fh->binmode(":utf8");
$logger->trace("found file $file for element $elt");
return ($fh);
}
#
# New subroutine "read_leaf" extracted - Thu Jul 21 12:58:06 2011.
#
sub read_leaf {
my ( $self, $obj, $elt, $check, $file, $args ) = @_;
my $fh = $self->open_for_read( $file, $elt ) or return;
my $v = join( '', $fh->getlines );
chomp $v unless $obj->value_type eq 'string';
$obj->store( value => $v, check => $check );
}
#
# New subroutine "read_list" extracted - Thu Jul 21 12:58:36 2011.
#
sub read_list {
my ( $self, $obj, $elt, $check, $file, $args ) = @_;
my $fh = $self->open_for_read( $file, $elt ) or return;
my @v = $fh->getlines;
chomp @v;
$obj->store_set(@v);
}
#
# New subroutine "read_hash" extracted - Thu Jul 21 12:58:50 2011.
#
sub read_hash {
my ( $self, $obj, $elt, $check, $file, $args ) = @_;
$logger->debug("PlainFile read skipped hash $elt");
}
sub write {
my $self = shift;
my %args = @_;
# args are:
# object => $obj, # Config::Model::Node object
# root => './my_test', # fake root directory, userd for tests
# config_dir => /etc/foo', # absolute path read
# file => 'foo.conf', # file name
# file_path => './my_test/etc/foo/foo.conf'
# io_handle => $io # IO::File object
# check => yes|no|skip
my $check = $args{check} || 'yes';
my $dir = $args{root} . $args{config_dir};
mkpath( $dir, { mode => 0755 } ) unless -d $dir;
my $node = $args{object};
$logger->debug( "PlainFile write called on node ", $node->name );
# write data from leaf element from the node
foreach my $elt ( $node->get_element_name() ) {
my $file = $dir . $elt;
my $obj = $args{object}->fetch_element( name => $elt );
my $type = $obj->get_type;
my @v;
if ( $type eq 'leaf' ) {
$v[0] = $obj->fetch( check => $args{check} );
$v[0] .= "\n" unless $obj->value_type eq 'string';
}
elsif ( $type eq 'list' ) {
@v = map { "$_\n" } $obj->fetch_all_values;
}
else {
$logger->debug("PlainFile write skipped $type $elt");
}
if (@v) {
$logger->trace("PlainFile write opening $file to write");
my $fh = new IO::File;
$fh->open( $file, '>' ) or die "Cannot open $file:$!";
$fh->binmode(":utf8");
$fh->print(@v);
$fh->close;
}
}
return 1;
}
no Mouse;
__PACKAGE__->meta->make_immutable;
1;
# ABSTRACT: Read and write config as plain file
__END__
=pod
=encoding UTF-8
=head1 NAME
Config::Model::Backend::PlainFile - Read and write config as plain file
=head1 VERSION
version 2.097
=head1 SYNOPSIS
use Config::Model;
my $model = Config::Model->new;
my $inst = $model->create_config_class(
name => "WithPlainFile",
element => [
[qw/source new/] => { qw/type leaf value_type uniline/ },
],
read_config => [
{
backend => 'plain_file',
config_dir => '/tmp',
},
],
);
my $inst = $model->instance(root_class_name => 'WithPlainFile' );
my $root = $inst->config_root ;
$root->load('source=foo new=yes' );
$inst->write_back ;
Now C</tmp> directory contains 2 files: C<source> and C<new>
with C<foo> and C<yes> inside.
=head1 DESCRIPTION
This module is used directly by L<Config::Model> to read or write the
content of a configuration tree written in several files.
Each element of the node is written in a plain file.
This module supports currently only leaf and list elements.
In the case of C<list> element, each line of the file is a value of the list.
=head1 Methods
=head2 read_leaf (obj,elt,check,file,args);
Called by L<read> method to read the file of a leaf element. C<args>
contains the arguments passed to L<read> method.
=head2 read_hash (obj,elt,check,file,args);
Like L<read_leaf> for hash elements.
=head2 read_list (obj,elt,check,file,args);
Like L<read_leaf> for list elements.
=head2 write ( )
C<write()> writes a file for each element of the calling class. Works only for
leaf and list elements. Other element type are skipped. Always return 1 (unless it died before).
=head1 AUTHOR
Dominique Dumont, (ddumont at cpan dot org)
=head1 SEE ALSO
L<Config::Model>,
L<Config::Model::BackendMgr>,
L<Config::Model::Backend::Any>,
=head1 AUTHOR
Dominique Dumont
=head1 COPYRIGHT AND LICENSE
This software is Copyright (c) 2005-2016 by Dominique Dumont.
This is free software, licensed under:
The GNU Lesser General Public License, Version 2.1, February 1999
=cut
|