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Implement meta table for font.

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PopSlime
2023-02-05 15:59:12 +08:00
parent 596c6395e4
commit ab6f983392
1 changed files with 34 additions and 0 deletions
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34
Assets/Cryville/Common/Font/FontTable.cs
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@@ -77,6 +77,7 @@ namespace Cryville.Common.Font {
public override object GetSubTable(TableRecord item) { public override object GetSubTable(TableRecord item) {
switch (item.tableTag) { switch (item.tableTag) {
case "name": return new NameTable(Reader, item.offset); case "name": return new NameTable(Reader, item.offset);
case "meta": return new MetaTable(Reader, item.offset);
default: throw new NotImplementedException(); default: throw new NotImplementedException();
} }
} }
@@ -181,6 +182,39 @@ namespace Cryville.Common.Font {
return this; return this;
} }
} }
public sealed class MetaTable : FontTable<DataMap> {
readonly UInt32 version;
readonly UInt32 flags;
readonly UInt32 dataMapCount;
readonly List<DataMap> dataMaps = new List<DataMap>();
public MetaTable(BinaryReader reader, UInt32 offset) : base(reader, offset) {
version = reader.ReadUInt32();
flags = reader.ReadUInt32();
reader.ReadUInt32();
dataMapCount = reader.ReadUInt32();
for (UInt32 i = 0; i < dataMapCount; i++)
dataMaps.Add(new DataMap {
tag = reader.ReadTag(),
dataOffset = reader.ReadUInt32(),
dataLength = reader.ReadUInt32(),
});
for (int i = 0; i < dataMaps.Count; i++) dataMaps[i] = dataMaps[i].Load(reader, offset);
}
public sealed override IReadOnlyList<DataMap> GetItems() {
return dataMaps;
}
}
public struct DataMap {
public String tag;
public UInt32 dataOffset;
public UInt32 dataLength;
public String value { get; private set; }
public DataMap Load(BinaryReader reader, UInt32 origin) {
reader.BaseStream.Position = origin + dataOffset;
value = Encoding.ASCII.GetString(reader.ReadBytes((int)dataLength));
return this;
}
}
public static class BinaryReaderExtensions { public static class BinaryReaderExtensions {
public static string ReadTag(this BinaryReader reader) { public static string ReadTag(this BinaryReader reader) {
return Encoding.ASCII.GetString(reader.ReadBytes(4)); return Encoding.ASCII.GetString(reader.ReadBytes(4));