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################################################################################
#
# Copyright (c) 2002-2024 Marcus Holland-Moritz. All rights reserved.
# This program is free software; you can redistribute it and/or modify
# it under the same terms as Perl itself.
#
################################################################################
use Test::More tests => 32;
use Convert::Binary::C @ARGV;
my $c = Convert::Binary::C->new(
ByteOrder => 'LittleEndian',
IntSize => 4,
EnumSize => 4
);
eval {
$c->parse(<<ENDC);
typedef char string[12];
typedef unsigned int array[];
enum weekday {
MONDAY, TUESDAY, WEDNESDAY, THURSDAY
};
struct xxx {
int x, y, z;
};
struct bits {
int a;
int y : 15;
int z : 17;
int b;
};
struct test {
enum weekday day;
int version;
string type;
struct {
int a;
int b;
int c;
} binary;
struct {
int x;
int y[];
} flex;
struct xxx yyy;
struct bits bit;
};
ENDC
};
is($@, '', 'parse C code');
my $c_le = $c->clone->ByteOrder('LittleEndian');
my $c_be = $c->clone->ByteOrder('BigEndian');
my $data = $c->pack('test', $c->unpack('test', pack("C*", 1 .. $c->sizeof('test'))));
my($t,$l,$b);
# -----------------
$c->tag('bits', ByteOrder => 'BigEndian');
$c->tag('weekday', ByteOrder => 'BigEndian');
$c->tag('array', ByteOrder => 'BigEndian');
$t = $c->unpack('test', $data);
$l = $c_le->unpack('test', $data);
$b = $c_be->unpack('test', $data);
is($t->{bits}{a}, $b->{bits}{a}, 'bits.a');
is($t->{bits}{x}, $l->{bits}{x}, 'bits.a');
is($t->{bits}{y}, $l->{bits}{y}, 'bits.a');
is($t->{bits}{b}, $b->{bits}{b}, 'bits.a');
is($t->{day}, $b->{day}, 'enum weekday');
is($c->pack('test', $t), $data, 'pack test');
$t = $c->unpack('array', $data);
$b = $c_be->unpack('array', $data);
is_deeply($t, $b, 'array');
# -----------------
for (qw( bits weekday array )) {
$c->untag($_, 'ByteOrder');
}
$t = $c->unpack('test', $data);
$l = $c_le->unpack('test', $data);
is($t->{bits}{a}, $l->{bits}{a}, 'bits.a');
is($t->{bits}{x}, $l->{bits}{x}, 'bits.a');
is($t->{bits}{y}, $l->{bits}{y}, 'bits.a');
is($t->{bits}{b}, $l->{bits}{b}, 'bits.a');
is($t->{day}, $l->{day}, 'enum weekday');
is($c->pack('test', $t), $data, 'pack test');
# -----------------
$t = $c->unpack('array', $data);
$l = $c_le->unpack('array', $data);
is_deeply($t, $l, 'array');
is($c->pack('array', $t), $data, 'pack array');
# -----------------
$c->tag('test', ByteOrder => 'BigEndian');
$t = $c->unpack('test', $data);
$b = $c_be->unpack('test', $data);
delete $t->{bit};
delete $b->{bit};
is_deeply($t, $b, 'test');
# -----------------
$c->tag('test.bit', ByteOrder => 'LittleEndian');
$t = $c->unpack('test', $data);
$b = $c_be->unpack('test', $data);
$l = $c_le->unpack('test', $data);
$b->{bit} = $l->{bit};
is_deeply($t, $b, 'test');
is($c->pack('test', $t), $data, 'pack test');
# -----------------
$c->tag('test.bit.a', ByteOrder => 'BigEndian');
$t = $c->unpack('test', $data);
$b = $c_be->unpack('test', $data);
$l = $c_le->unpack('test', $data);
$l->{bit}{a} = $b->{bit}{a};
$b->{bit} = $l->{bit};
is_deeply($t, $b, 'test');
is($c->pack('test', $t), $data, 'pack test');
# -----------------
# test precedence of 'struct bits' over 'test.bit'
$c->tag('bits', ByteOrder => 'BigEndian');
$t = $c->unpack('test', $data);
$b = $c_be->unpack('test', $data);
$l = $c_le->unpack('test', $data);
$b->{bit}{y} = $l->{bit}{y};
$b->{bit}{z} = $l->{bit}{z};
is_deeply($t, $b, 'test');
is($c->pack('test', $t), $data, 'pack test');
# -----------------
for (qw( test test.bit test.bit.a bits )) {
$c->untag($_, 'ByteOrder');
}
$t = $c->unpack('test', $data);
$l = $c_le->unpack('test', $data);
is_deeply($t, $l, 'test');
is($c->pack('test', $t), $data, 'pack test');
# -----------------
# test that hooks work correctly
$b = $c_be->unpack('test', $data);
my $phc = 0;
my $uhc = 0;
sub unpack_xxx
{
my $xxx = shift;
is_deeply($xxx, $b->{yyy}, 'unpack_xxx');
$uhc++;
return $xxx;
}
sub pack_xxx
{
my $xxx = shift;
is_deeply($xxx, $b->{yyy}, 'pack_xxx');
$phc++;
return $xxx;
}
$c->tag('xxx', ByteOrder => 'BigEndian',
Hooks => { unpack => \&unpack_xxx, pack => \&pack_xxx });
$t = $c->unpack('test', $data);
$l = $c_le->unpack('test', $data);
$l->{yyy} = $b->{yyy};
is($uhc, 1, 'unpack hook calls');
is_deeply($t, $l, 'test');
is($c->pack('test', $t), $data, 'pack test');
is($phc, 1, 'pack hook calls');
# -----------------
# bitfields cannot be tagged
eval { $c->tag('bits.y', ByteOrder => 'BigEndian'); };
like($@, qr/Cannot use 'ByteOrder' tag on bitfields/, 'tagging bitfield');
|
