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# Copyright 2015 - present MongoDB, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
use strict;
use warnings;
package TestBSON;
use Config;
use Exporter 'import';
use Test::More;
our @EXPORT = qw(
BSON_DATETIME
BSON_DOC
BSON_DOUBLE
BSON_INT32
BSON_INT64
BSON_NULL
BSON_OID
BSON_BOOL
BSON_REGEXP
BSON_STRING
HAS_INT64
MAX_LONG
MIN_LONG
_cstring
_datetime
_dbref
_doc
_double
_ename
_hexdump
_int32
_int64
_pack_bigint
_regexp
_string
is_bin
);
use constant {
PERL58 => $] lt '5.010',
HAS_INT64 => $Config{use64bitint}
};
use constant {
P_INT32 => PERL58 ? "l" : "l<",
P_INT64 => PERL58 ? "q" : "q<",
MAX_LONG => 2147483647,
MIN_LONG => -2147483647,
BSON_DOUBLE => "\x01",
BSON_STRING => "\x02",
BSON_DOC => "\x03",
BSON_OID => "\x07",
BSON_BOOL => "\x08",
BSON_DATETIME => "\x09",
BSON_NULL => "\x0A",
BSON_REGEXP => "\x0B",
BSON_INT32 => "\x10",
BSON_INT64 => "\x12",
};
sub _hexdump {
my ($str) = @_;
$str =~ s{([^[:graph:]])}{sprintf("\\x{%02x}",ord($1))}ge;
return $str;
}
sub is_bin {
my ( $got, $exp, $label ) = @_;
$label ||= '';
$got = _hexdump($got);
$exp = _hexdump($exp);
local $Test::Builder::Level = $Test::Builder::Level + 1;
is( $got, $exp, $label );
}
sub _doc {
my ($string) = shift;
return pack( P_INT32, 5 + length($string) ) . $string . "\x00";
}
sub _cstring { return $_[0] . "\x00" }
BEGIN { *_ename = \&_cstring }
sub _double { return pack( PERL58 ? "d" : "d<", shift ) }
sub _int32 { return pack( P_INT32, shift ) }
sub _int64 {
my $val = shift;
if ( ref($val) && eval { $val->isa("Math::BigInt") } ) {
return _pack_bigint($val);
}
elsif (HAS_INT64) {
return pack( P_INT64, $val );
}
else {
my $big = Math::BigInt->new( $val );
return _pack_bigint($big);
}
}
sub _string {
my ($string) = shift;
return pack( P_INT32, 1 + length($string) ) . $string . "\x00";
}
sub _datetime {
my $dt = shift;
if (HAS_INT64) {
return pack( P_INT64, 1000 * $dt->epoch + $dt->millisecond );
}
else {
my $big = Math::BigInt->new( $dt->epoch );
$big->bmul(1000);
$big->badd( $dt->millisecond );
return _pack_bigint($big);
}
}
sub _regexp {
my ( $pattern, $flags ) = @_;
return _cstring($pattern) . _cstring($flags);
}
sub _dbref {
my $dbref = shift;
#<<< No perltidy
return _doc(
BSON_STRING . _ename('$ref') . _string($dbref->ref)
. BSON_STRING . _ename('$id' ) . _string($dbref->id)
. BSON_STRING . _ename('$db' ) . _string($dbref->db)
);
#>>>
}
# pack to int64_t
sub _pack_bigint {
my $bi = shift;
my $binary = $bi->as_bin;
$binary =~ s{^-?0b}{};
$binary = "0"x(64-length($binary)) . $binary if length($binary) < 64;
if ( $bi->sign eq '+' ) {
return pack("b*", scalar reverse $binary);
}
else {
my @lendian = split //, reverse $binary;
my $saw_first_one = 0;
for (@lendian) {
if ( ! $saw_first_one ) {
$saw_first_one = $_ == '1';
next;
}
else {
tr[01][10];
}
}
return pack("b*", join("", @lendian));
}
}
1;
# vim: set ts=4 sts=4 sw=4 et tw=75:
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