/usr/share/perl5/Config/Model/Backend/Dpkg/Patch.pm is in libconfig-model-dpkg-perl 2.044.
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 | package Config::Model::Backend::Dpkg::Patch;
use 5.10.1 ;
use Mouse;
extends 'Config::Model::Backend::Any';
with 'Config::Model::Backend::DpkgSyntax';
use Carp;
use Config::Model::Exception;
use Log::Log4perl qw(get_logger :levels);
use IO::File;
my $logger = get_logger("Backend::Dpkg::Patch");
my $patch_name_for_test = 'some-patch';
sub suffix { return ''; }
sub skip_open { 1;}
sub read {
my $self = shift;
my %args = @_;
# args is:
# 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
# io_handle is not defined as no file is specified in model
my $patch_dir = $args{root} . $args{config_dir};
my $check = $args{check};
my $node = $args{object};
# the default value is used for tests
my $patch_name = $node->index_value || $patch_name_for_test;
my $patch_file = "$patch_dir$patch_name";
$logger->info("Parsing patch $patch_file");
my $patch_io = IO::File->new($patch_file)
|| Config::Model::Exception::Syntax->throw(
message => "cannot read patch $patch_file" );
my ( $header, $diff ) = ( [],[] );
my $target = $header;
foreach my $l ( $patch_io->getlines ) {
if ( $l =~ /^---/ ) {
# beginning of quilt style patch
$target = $diff;
}
elsif ( $l =~ /^===/ ) {
# beginning of git diff style patch
push @$diff, pop @$header if $target eq $header; # get back the Index: line
$target = $diff;
}
push @$target, $l;
}
chomp @$header;
my $c = [] ;
$logger->trace("header: @$header") ;
my @stuff ;
my $store_stuff = sub { push @stuff, shift ;} ;
if (@$header) {
$c = eval { $self->parse_dpkg_lines( $header, $check, 0, $store_stuff ); };
my $e;
if ( $e = Exception::Class->caught('Config::Model::Exception::Syntax') )
{
# FIXME: this is naughty. Should file a bug to add info in rethrow
$e->{parsed_file} = $patch_file unless $e->parsed_file;
$e->rethrow;
}
elsif ( $e = Exception::Class->caught() ) {
ref $e ? $e->rethrow : die $e;
}
Config::Model::Exception::Syntax->throw(
message => "More than 2 sections in $patch_name header" )
if @$c > 4; # $c contains [ line_nb, section_ref ]
}
while (@$c) {
my ( $section_line, $section ) = splice @$c, 0, 2;
foreach ( my $i = 0 ; $i < $#$section ; $i += 2 ) {
my $key = $section->[$i];
my ( $v, $l, $a, @comments ) = @{ $section->[ $i + 1 ] };
if ( my $found = $node->find_element( $key, case => 'any' ) ) {
my @elt = ($found);
$v .= join( "\n", @stuff ) if $found eq 'Subject';
my @v = ( $found eq 'Description' ) ? ( split /\n/, $v, 2 ) : ($v);
unshift @elt, 'Synopsis' if $found eq 'Description';
foreach (@elt) {
my $sub_v = shift @v;
next unless defined $sub_v;
$logger->debug("storing $_ value: $sub_v");
$node->fetch_element($_)->store( value => $sub_v, check => $check );
}
}
}
}
$node->fetch_element('diff')->store(join('',@$diff));
return 1;
}
sub write {
my $self = shift;
my %args = @_;
# args is:
# 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
# io_handle is not defined as no file is specified in model
my $patch_dir = $args{root} . $args{config_dir};
my $check = $args{check};
my $node = $args{object};
my $patch_name = $node->index_value || $patch_name_for_test;
my $patch_file = "$patch_dir/$patch_name";
$logger->info("Writing patch $patch_file");
my $io = IO::File->new($patch_file,'w')
|| Config::Model::Exception::Syntax->throw(
message => "cannot write patch $patch_file" );
foreach my $elt ( $node -> get_element_name ) {
my $elt_obj = $node->fetch_element($elt) ;
my $type = $node->element_type($elt) ;
my @v = $type eq 'list' ? $elt_obj->fetch_all_values
: $type eq 'leaf' ? ($elt_obj->fetch)
: ();
foreach my $v (@v) {
# say "write $elt -> $v" ;
next unless defined $v and $v;
if ($elt eq 'Synopsis') {
my $long_description = $node->fetch_element_value('Description') ;
$v .= "\n" . $long_description if $long_description ;
$io->print("Description:");
$self->write_dpkg_text($io,$v) ;
}
elsif ($elt eq 'Description') { } # done in Synopsis
elsif ($elt eq 'diff' ) {
$io->print($node->fetch_element_value('diff')) ;
}
else {
$io->print("$elt:");
$self->write_dpkg_text($io,$v) ;
}
}
}
return 1;
}
1;
__END__
=head1 NAME
Config::Model::Backend::Dpkg::Patch - Read and write Debian Dpkg Patch information
=head1 SYNOPSIS
No synopsis. This class is dedicated to configuration class C<Dpkg::Patch>
=head1 DESCRIPTION
This module is used directly by L<Config::Model> to read or write the
content of Debian C<Patch> file.
All C<Patch> files keyword are read in a case-insensitive manner.
=head1 CONSTRUCTOR
=head2 new ( node => $node_obj, name => 'Dpkg::Patch' ) ;
Inherited from L<Config::Model::Backend::Any>. The constructor will be
called by L<Config::Model::AutoRead>.
=head2 read ( io_handle => ... )
Of all parameters passed to this read call-back, only C<io_handle> is
used. This parameter must be L<IO::File> object already opened for
read.
It can also be undef. In this case, C<read()> will return 0.
When a file is read, C<read()> will return 1.
=head2 write ( io_handle => ... )
Of all parameters passed to this write call-back, only C<io_handle> is
used. This parameter must be L<IO::File> object already opened for
write.
C<write()> will return 1.
=head1 AUTHOR
Dominique Dumont, (ddumont at cpan dot org)
=head1 SEE ALSO
L<Config::Model>,
L<Config::Model::AutoRead>,
L<Config::Model::Backend::Any>,
=cut
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