public DefineFontNameTag(FlashReader reader, TagRecord header) :
base(reader, header)
{
FontId = reader.ReadUInt16();
FontName = reader.ReadNullTerminatedString();
FontCopyright = reader.ReadNullTerminatedString();
}
public DefineBinaryDataTag(FlashReader reader, TagRecord header)
: base(reader, header)
{
CharacterId = reader.ReadUInt16();
reader.ReadUInt32();
BinaryData = reader.ReadBytes(header.Body.Length - 6);
}
public SetBackgroundColorTag(FlashReader reader, TagRecord header) :
base(reader, header)
{
byte red = reader.ReadByte();
byte green = reader.ReadByte();
byte blue = reader.ReadByte();
BackgroundColor =
Color.FromArgb(red, green, blue);
}
public DoABCTag(FlashReader reader, TagRecord header)
: base(reader, header)
{
Flags = reader.ReadUInt32();
Name = reader.ReadNullTerminatedString();
int nameLength = (Encoding.UTF8.GetByteCount(Name) + 1);
byte[] abcData = reader.ReadBytes(header.Body.Length - (nameLength + 4));
ABC = new ABCFile(abcData);
}
public ProductInfoTag(FlashReader reader, TagRecord header) :
base(reader, header)
{
ProductId = (FlashProductId)reader.ReadUInt32();
Edition = (FlashEdition)reader.ReadUInt32();
MajorVersion = reader.ReadByte();
MinorVersion = reader.ReadByte();
BuildLow = reader.ReadUInt32();
BuildHigh = reader.ReadUInt32();
CompilationDate =
_epoch.AddMilliseconds(reader.ReadUInt64());
}
public SymbolClassTag(FlashReader reader, TagRecord header) :
base(reader, header)
{
int symbolCount = reader.ReadUInt16();
Symbols = new Dictionary<ushort, string>(symbolCount);
for (int i = 0; i < symbolCount; i++)
{
ushort characterId = reader.ReadUInt16();
string symbolName = reader.ReadNullTerminatedString();
if (Symbols.ContainsKey(characterId))
{
symbolName =
$"{Symbols[characterId]},{symbolName}";
}
Symbols[characterId] = symbolName;
}
}
public ExportAssetsTag(FlashReader reader, TagRecord header) :
base(reader, header)
{
int count = reader.ReadUInt16();
Assets = new Dictionary<ushort, string>(count);
for (int i = 0; i < count; i++)
{
ushort tag = reader.ReadUInt16();
string name = reader.ReadNullTerminatedString();
if (Assets.ContainsKey(tag))
{
throw new Exception(
"Duplicate tag id: " + tag);
}
Assets[tag] = name;
}
}
public DefineBitsLossless2Tag(FlashReader reader, TagRecord header) :
base(reader, header)
{
CharacterId = reader.ReadUInt16();
BitmapFormat = reader.ReadByte();
BitmapWidth = reader.ReadUInt16();
BitmapHeight = reader.ReadUInt16();
_isCompressed = true;
switch (BitmapFormat - 3)
{
case 0: break;
case 1:
case 2:
{
_compressedBitmapData =
reader.ReadBytes(header.Body.Length - 7);
break;
}
}
}
public FrameLabelTag(FlashReader reader, TagRecord header) :
base(reader, header)
{
Name = reader.ReadNullTerminatedString();
}
public UnknownTag(FlashReader reader, TagRecord header) :
base(reader, header)
{
reader.Position += header.Body.Length;
}
public FlashTag(FlashTagType tagType)
{
Header = new TagRecord(tagType);
}
protected override FlashTag ReadTag(FlashReader reader, TagRecord header)
{
FlashTag tag =
base.ReadTag(reader, header);
switch (tag.Header.TagType)
{
case FlashTagType.DoABC:
_abcFiles.Add(((DoABCTag)tag).ABC);
break;
case FlashTagType.DefineBinaryData:
_binTags.Add((DefineBinaryDataTag)tag);
break;
}
return tag;
}
protected virtual FlashTag ReadTag(FlashReader reader, TagRecord header)
{
FlashTag tag = null;
switch (header.TagType)
{
default:
tag = new UnknownTag(Reader, header);
break;
case FlashTagType.DoABC:
tag = new DoABCTag(Reader, header);
break;
case FlashTagType.DefineBitsLossless2:
tag = new DefineBitsLossless2Tag(Reader, header);
break;
case FlashTagType.DefineBinaryData:
tag = new DefineBinaryDataTag(Reader, header);
break;
}
var character = (tag as ICharacter);
if (character != null)
{
// Add ICharacter tag to the global dictionary.
Dictionary.Characters[
character.CharacterId] = character;
}
return tag;
}
/// <summary>
/// Reads the flash tags that make up the content of the Shockwave Flash(SWF) file.
/// </summary>
public virtual List<FlashTag> ReadTags()
{
Tags.Clear();
Reader.Position = _frameEndPos;
while (Reader.Position != Reader.Length)
{
var header = new TagRecord(Reader);
int expectedPosition = (header.Body.Length + Reader.Position);
Tags.Add(ReadTag(Reader, header));
if (Reader.Position != expectedPosition)
{
int lastTagIndex = (Tags.Count - 1);
throw new Exception($"Incorrect position has been reached at {Reader.Position}.\r\n" +
$"Expected Position: {expectedPosition} | TagType: {Tags[lastTagIndex].Header.TagType} | Tag Index: {lastTagIndex}");
}
}
return Tags;
}
public ShowFrameTag(FlashReader reader, TagRecord header) :
base(reader, header)
{ }
public FlashTag(FlashReader reader, TagRecord header)
{
Header = header;
}
public ScriptLimitsTag(FlashReader reader, TagRecord header) :
base(reader, header)
{
MaxRecursionDepth = reader.ReadUInt16();
ScriptTimeoutSeconds = reader.ReadUInt16();
}
