public static HwpV3DocumentSignature Create(BinaryReader reader)
{
byte[] signature = reader.ReadBytes(30);
bool result = (
signature != null && signature.Length == 30 &&
signature[0x00] == 0x48 && signature[0x01] == 0x57 && signature[0x02] == 0x50 &&
signature[0x03] == 0x20 && signature[0x04] == 0x44 && signature[0x05] == 0x6F &&
signature[0x06] == 0x63 && signature[0x07] == 0x75 && signature[0x08] == 0x6D &&
signature[0x09] == 0x65 && signature[0x0A] == 0x6E && signature[0x0B] == 0x74 &&
signature[0x0C] == 0x20 && signature[0x0D] == 0x46 && signature[0x0E] == 0x69 &&
signature[0x0F] == 0x6C && signature[0x10] == 0x65 && signature[0x11] == 0x20 &&
signature[0x12] == 0x56 && signature[0x13] == 0x33 && signature[0x14] == 0x2E &&
signature[0x15] == 0x30 && signature[0x16] == 0x30 && signature[0x17] == 0x20 &&
signature[0x18] == 0x1A && signature[0x19] == 0x01 && signature[0x1A] == 0x02 &&
signature[0x1B] == 0x03 && signature[0x1C] == 0x04 && signature[0x1D] == 0x05
);
if (!result)
{
return(null);
}
HwpV3DocumentSignature item = new HwpV3DocumentSignature();
item.Signature = signature;
return(item);
}
public static HwpV3Document Load(string filePath)
{
HwpV3Document doc = new HwpV3Document();
using (Stream file = File.OpenRead(filePath))
using (BinaryReader reader = new BinaryReader(file))
{
doc.Signature = HwpV3DocumentSignature.Create(reader);
doc.Information = HwpV3DocumentInformation.Create(reader);
doc.Summary = HwpV3DocumentSummary.Create(reader);
doc.InformationBlocks = HwpV3DocumentInformationBlockCollection.Create(reader, doc.Information);
bool requireDecompress = ((int)doc.Information.Compressed != 0);
MemoryStream extractedFile = new MemoryStream();
byte[] buffer = new byte[64000];
int read = 0;
if (requireDecompress)
{
using (DeflateStream deflateStream = new DeflateStream(file, CompressionMode.Decompress, true))
{
while ((read = deflateStream.Read(buffer, 0, buffer.Length)) > 0)
{
extractedFile.Write(buffer, 0, read);
}
}
}
else
{
while ((read = file.Read(buffer, 0, buffer.Length)) > 0)
{
extractedFile.Write(buffer, 0, read);
}
}
extractedFile.Seek(0L, SeekOrigin.Begin);
using (extractedFile)
using (BinaryReader subReader = new BinaryReader(extractedFile))
{
doc.FontNames = HwpV3FontNames.Create(subReader);
doc.Styles = HwpV3DocumentStyleCollection.Create(subReader);
doc.Paragraph = HwpV3Paragraph.Create(subReader);
doc.AdditionalBlock1 = HwpV3AdditionalBlock.Create(subReader);
uint additionalBlock2Size = 0u;
bool hasAdditionalBlock2 = false;
BinaryReader target = (requireDecompress ? reader : subReader);
target.BaseStream.Seek(-8, SeekOrigin.End);
uint id = target.ReadDWord();
if (id == 0u)
{
additionalBlock2Size = target.ReadDWord();
if (additionalBlock2Size != 0u)
{
hasAdditionalBlock2 = true;
}
}
if (hasAdditionalBlock2)
{
target.BaseStream.Position = target.BaseStream.Length - additionalBlock2Size;
doc.AdditionalBlock2 = HwpV3AdditionalBlock.Create(reader);
}
}
return(doc);
}
}
