private int DecompressTable(MemoryStream output, BigEndianReader reader, WoffTableEntry table, uint length)
{
int pos = (int)output.Position;
using (var streamIn = new MemoryStream(reader.Read((int)table.CompressedLength)))
{
#if NET6_0
using (var compress = new System.IO.Compression.ZLibStream(streamIn, System.IO.Compression.CompressionMode.Decompress))
{
compress.CopyTo(output);
}
#else
using (InflaterInputStream decompressor = new InflaterInputStream(streamIn))
{
decompressor.CopyTo(output);
}
#endif
}
int len = (int)(output.Position - pos);
if (len != length)
{
return(-1);
}
else
{
return(len);
}
}
public override ITypefaceFont ReadTypefaceAfterVersion(BigEndianReader reader, IFontInfo forReference, string source)
{
long startOffset = reader.Position - VersionByteSize;
WoffHeader header = WoffHeader.ReadHeader(this, reader);
List <WoffTableEntry> list = new List <WoffTableEntry>();
for (var i = 0; i < header.NumberOfTables; i++)
{
WoffTableEntry entry = new WoffTableEntry();
entry.Read(reader);
list.Add(entry);
}
list.Sort(delegate(WoffTableEntry one, WoffTableEntry two) { return(one.Offset.CompareTo(two.Offset)); });
var entries = new WoffTableEntryList(list);
var file = new WoffFontFile(header, entries);
var factory = this.GetTableFactory();
foreach (var entry in entries)
{
var tbl = factory.ReadTable(entry.Tag, entries, reader);
if (null != tbl)
{
entry.SetTable(tbl);
}
}
file.EnsureReferenceMatched(forReference);
byte[] data = CopyStreamData(reader.BaseStream, startOffset);
file.SetFileData(data, DataFormat.Woff);
return(file);
}
public override ITypefaceInfo ReadTypefaceInfoAfterVersion(BigEndianReader reader, string source)
{
WoffHeader header = WoffHeader.ReadHeader(this, reader);
WoffTableEntryList list = new WoffTableEntryList();
bool hasOs2 = false;
bool hasFHead = false;
bool hasName = false;
for (var i = 0; i < header.NumberOfTables; i++)
{
WoffTableEntry entry = new WoffTableEntry();
entry.Read(reader);
list.Add(entry);
if (entry.Tag == TrueTypeTableNames.WindowsMetrics)
{
hasOs2 = true;
}
else if (entry.Tag == TrueTypeTableNames.FontHeader)
{
hasFHead = true;
}
else if (entry.Tag == TrueTypeTableNames.NamingTable)
{
hasName = true;
}
}
if (!(hasOs2 || hasName) || !hasFHead)
{
return(new Utility.UnknownTypefaceInfo(source, "Not all the required tables (head with OS/2 or name) were found in the font file"));
}
return(ReadInfoFromTables(list, reader, source, hasOs2));
}