public void WriteSimpleFileHeader()
{
var expected = new byte[]
{
(byte)'A', (byte)'C', (byte)'1', (byte)'0', (byte)'1', (byte)'4',
0, 0, 0, 0, 0,
42, // maintver
1,
0x78, 0x56, 0x34, 0x12, // image seeker
0, 0, // unknown
0x00, 0x01, // codepage
5, 0, 0, 0, // 5 section locators
0, 0, 0, 0, 0, 0, 0, 0, 0, // header locator
0, 0, 0, 0, 0, 0, 0, 0, 0, // class section locator
0, 0, 0, 0, 0, 0, 0, 0, 0, // object map locator
0, 0, 0, 0, 0, 0, 0, 0, 0, // unknown R13C3 and later locator
0, 0, 0, 0, 0, 0, 0, 0, 0, // unknown padding locator
0x63, 0xF1, // CRC
0x95, 0xA0, 0x4E, 0x28, 0x99, 0x82, 0x1A, 0xE5, // sentinel
0x5E, 0x41, 0xE0, 0x5F, 0x9D, 0x3A, 0x4D, 0x00,
};
var fileHeader = new DwgFileHeader(DwgVersionId.R14, 42, 0x12345678, 256);
using (var ms = new MemoryStream())
{
var writer = new BitWriter(ms);
fileHeader.Write(writer);
var actual = writer.AsBytes();
Assert.Equal(expected, actual);
}
}
public void ParseSimpleFileHeader()
{
var data = new byte[]
{
(byte)'A', (byte)'C', (byte)'1', (byte)'0', (byte)'1', (byte)'4',
0, 0, 0, 0, 0,
42, // maintver
1,
0, 0, 0, 0, // image seeker
0, 0, // unknown
0x00, 0x01, // codepage
0, 0, 0, 0, // no section locators
0xF8, 0x63, // CRC
0x95, 0xA0, 0x4E, 0x28, 0x99, 0x82, 0x1A, 0xE5, // sentinel
0x5E, 0x41, 0xE0, 0x5F, 0x9D, 0x3A, 0x4D, 0x00,
};
var reader = new BitReader(data);
var fileHeader = DwgFileHeader.Parse(reader);
Assert.Equal(DwgVersionId.R14, fileHeader.Version);
Assert.Equal(42, fileHeader.MaintenenceVersion);
Assert.Equal(256, fileHeader.CodePage);
}
