CHG is a container format file used by MONOMAKH-SAPR, a software package for analysis & design of reinforced concrete multi-storey buildings with arbitrary configuration in plan.
CHG is a simple container, which bundles several project files together.
Written and tested by Vladimir Shulzhitskiy, 2017
This page hosts a formal specification of .chg file format of MONOMAKH-SAPR using Kaitai Struct. This specification can be automatically translated into a variety of programming languages to get a parsing library.
# This is a generated file! Please edit source .ksy file and use kaitai-struct-compiler to rebuild
use strict;
use warnings;
use IO::KaitaiStruct 0.009_000;
use Encode;
########################################################################
package MonomakhSaprChg;
our @ISA = 'IO::KaitaiStruct::Struct';
sub from_file {
my ($class, $filename) = @_;
my $fd;
open($fd, '<', $filename) or return undef;
binmode($fd);
return new($class, IO::KaitaiStruct::Stream->new($fd));
}
sub new {
my ($class, $_io, $_parent, $_root) = @_;
my $self = IO::KaitaiStruct::Struct->new($_io);
bless $self, $class;
$self->{_parent} = $_parent;
$self->{_root} = $_root || $self;;
$self->_read();
return $self;
}
sub _read {
my ($self) = @_;
$self->{title} = Encode::decode("ascii", $self->{_io}->read_bytes(10));
$self->{ent} = ();
while (!$self->{_io}->is_eof()) {
push @{$self->{ent}}, MonomakhSaprChg::Block->new($self->{_io}, $self, $self->{_root});
}
}
sub title {
my ($self) = @_;
return $self->{title};
}
sub ent {
my ($self) = @_;
return $self->{ent};
}
########################################################################
package MonomakhSaprChg::Block;
our @ISA = 'IO::KaitaiStruct::Struct';
sub from_file {
my ($class, $filename) = @_;
my $fd;
open($fd, '<', $filename) or return undef;
binmode($fd);
return new($class, IO::KaitaiStruct::Stream->new($fd));
}
sub new {
my ($class, $_io, $_parent, $_root) = @_;
my $self = IO::KaitaiStruct::Struct->new($_io);
bless $self, $class;
$self->{_parent} = $_parent;
$self->{_root} = $_root || $self;;
$self->_read();
return $self;
}
sub _read {
my ($self) = @_;
$self->{header} = Encode::decode("ascii", $self->{_io}->read_bytes(13));
$self->{file_size} = $self->{_io}->read_u8le();
$self->{file} = $self->{_io}->read_bytes($self->file_size());
}
sub header {
my ($self) = @_;
return $self->{header};
}
sub file_size {
my ($self) = @_;
return $self->{file_size};
}
sub file {
my ($self) = @_;
return $self->{file};
}
1;