/// <summary>
/// Writes an unsigned byte to the current stream and advances the stream position by one byte.
/// </summary>
/// <param name="value">The unsigned byte to write.</param>
/// <returns>Returns <see langword="true"/> if successful; otherwise, returns <see langword="false"/>.</returns>
public bool Write(byte value)
{
if (_buffer != null && _buffer.CanWrite)
{
_converter.SetByte(value, 0);
_buffer.Write(_converter.Buffer, 0, WoffBuffer.SizeOfByte);
return(true);
}
return(false);
}
protected override bool ReconstructTable()
{
var headBuffer = _woffDir.OrigTable;
if (headBuffer == null || headBuffer.Length < 6)
{
return(false);
}
var length = headBuffer.Length;
_tableBuffer = new WoffBuffer((uint)length);
_tableBuffer.Copy(headBuffer);
var fullFontName = this.GetNameString();
var fontFamilyName = this.GetFamilyString();
var postScriptName = this.GetPostScriptString();
// Check if the FullFontName and FontFamilyName are stripped from the compressed table data
// Some tools (such as the dvisvgm – A fast DVI to SVG converter) strip both leaving only the PostScriptName
if (!string.IsNullOrWhiteSpace(fullFontName) && !string.IsNullOrWhiteSpace(fontFamilyName))
{
return(true);
}
var fixFullFontName = string.IsNullOrWhiteSpace(fullFontName);
var fixFontFamilyName = string.IsNullOrWhiteSpace(fontFamilyName);
// For the fix, we will just duplicate an existing name record, find out which one.
ushort searchRecord = 0;
if (!fixFullFontName)
{
searchRecord = (ushort)NameIdentifiers.FullFontName;
}
else if (!fixFontFamilyName)
{
searchRecord = (ushort)NameIdentifiers.FontFamilyName;
}
else if (!string.IsNullOrWhiteSpace(postScriptName))
{
searchRecord = (ushort)NameIdentifiers.PostScriptName;
}
else
{
// We cannot fix it...
return(true);
}
int numRecords = this.NumberNameRecords;
List <NameRecord> nameRecords = new List <NameRecord>(numRecords);
for (uint i = 0; i < numRecords; i++)
{
NameRecord nr = GetNameRecord(i);
if (nr != null)
{
byte[] nameBytes = GetEncodedString(nr);
if (nameBytes != null && nameBytes.Length != 0)
{
nr.NameBytes = nameBytes;
nr.NameString = DecodeString(nr.PlatformID, nr.EncodingID, nameBytes);
nameRecords.Add(nr);
if (searchRecord == nr.NameID)
{
if (fixFontFamilyName)
{
var nrFontFamily = nr.Clone();
nrFontFamily.NameID = (ushort)NameIdentifiers.FontFamilyName;
nameRecords.Add(nrFontFamily);
}
if (fixFullFontName)
{
var nrFullFont = nr.Clone();
nrFullFont.NameID = (ushort)NameIdentifiers.FullFontName;
nameRecords.Add(nrFullFont);
}
}
}
}
}
numRecords = nameRecords.Count;
List <byte[]> bytesNameString = new List <byte[]>();
uint lengthOfStrings = 0;
ushort offsetToStrings = (ushort)(6 + (numRecords * 12));
for (int i = 0; i < numRecords; i++)
{
var nrc = nameRecords[i];
byte[] byteString = nrc.NameBytes;
bytesNameString.Add(byteString);
lengthOfStrings += (ushort)byteString.Length;
}
// create a Motorola Byte Order buffer for the new table
var tableBuffer = new WoffBuffer((uint)((ushort)FieldOffsets.NameRecords + numRecords * 12 + lengthOfStrings));
// populate the buffer
tableBuffer.SetUShort(this.FormatSelector, (uint)FieldOffsets.FormatSelector);
tableBuffer.SetUShort((ushort)numRecords, (uint)FieldOffsets.NumberNameRecords);
tableBuffer.SetUShort(offsetToStrings, (uint)FieldOffsets.OffsetToStrings);
ushort nOffset = 0;
// Write the NameRecords and Strings
for (int i = 0; i < numRecords; i++)
{
byte[] namBytes = bytesNameString[i];
uint startOffset = (uint)((ushort)(FieldOffsets.NameRecords) + i * NameRecord.SizeOf);
tableBuffer.SetUShort((nameRecords[i]).PlatformID, startOffset + (ushort)NameRecord.FieldOffsets.PlatformID);
tableBuffer.SetUShort((nameRecords[i]).EncodingID, startOffset + (ushort)NameRecord.FieldOffsets.EncodingID);
tableBuffer.SetUShort((nameRecords[i]).LanguageID, startOffset + (ushort)NameRecord.FieldOffsets.LanguageID);
tableBuffer.SetUShort((nameRecords[i]).NameID, startOffset + (ushort)NameRecord.FieldOffsets.NameID);
tableBuffer.SetUShort((ushort)namBytes.Length, startOffset + (ushort)NameRecord.FieldOffsets.StringLength);
tableBuffer.SetUShort(nOffset, startOffset + (ushort)NameRecord.FieldOffsets.StringOffset);
//Write the string to the buffer
for (int j = 0; j < namBytes.Length; j++)
{
tableBuffer.SetByte(namBytes[j], (uint)(offsetToStrings + nOffset + j));
}
nOffset += (ushort)namBytes.Length;
}
_tableBuffer = tableBuffer;
var nameBuffer = _tableBuffer.GetBuffer();
_woffDir.OrigTable = nameBuffer;
_woffDir.OrigLength = (uint)nameBuffer.Length;
_woffDir.RecalculateChecksum();
return(true);
}
