} // Validate
#endregion
#region Private instance methods
protected override void ReadTable_Internal()
{
// Base class constructor ran partial validations on the table record,
// including checking that the offset and length are within bounds
if ((_validationStatus & OTFile.OTFileValidation_StructureOffsetOutOfRange) != 0)
{
// out of range so can't read anything
return;
}
MemoryStream ms = _parentFont.MemoryStream;
// Get the version and check that before continuing
try
{
ms.Seek(_tableRecord.Offset, SeekOrigin.Begin);
_version = OTFixed.ReadFixed(ms);
}
catch (OTDataIncompleteReadException e)
{
_validationStatus |= OTFile.OTFileValidation_ReadTrunctated;
throw new OTFileParseException("OT parse error: unable to read " + _tableTag + " table", e);
}
if (_version.Mantissa != 2)
{
_validationStatus |= OTFile.OTFileValidation_StructureVersionNotSupported;
throw new OTUnknownVersionException("OT parse error: unrecognized " + _tableTag + " version");
}
if (_version.FixedTableMinorVersionToInteger() > _fmtx_2_latestKnownMinorVersion)
{
_validationStatus |= OTFile.OTFileValidation_StructureMinorVersionUnknown;
}
if (_tableRecord.Length < _fmtx_2_0_headerLength)
{
_validationStatus |= OTFile.OTFileValidation_TableLengthTooShort;
}
// Known version, OK to continue
try
{
_glyphIndex = OTFile.ReadUInt32(ms);
_horizontalBefore = OTFile.ReadUInt8(ms);
_horizontalAfter = OTFile.ReadUInt8(ms);
_horizontalCaretHead = OTFile.ReadUInt8(ms);
_horizontalCaretBase = OTFile.ReadUInt8(ms);
_verticalBefore = OTFile.ReadUInt8(ms);
_verticalAfter = OTFile.ReadUInt8(ms);
_verticalCaretHead = OTFile.ReadUInt8(ms);
_verticalCaretBase = OTFile.ReadUInt8(ms);
}
catch (OTDataIncompleteReadException e)
{
_validationStatus |= OTFile.OTFileValidation_ReadTrunctated;
throw new OTFileParseException("OT parse error: unable to read " + _tableTag + " table", e);
}
} // ReadTable_Internal
} // Validate
#endregion
#region Private instance methods
protected override void ReadTable_Internal()
{
// Base class constructor ran partial validations on the table record,
// including checking that the offset and length are within bounds
if ((_validationStatus & OTFile.OTFileValidation_StructureOffsetOutOfRange) != 0)
{
// out of range so can't read anything
return;
}
MemoryStream ms = _parentFont.MemoryStream;
// Get the version and check that before continuing
try
{
ms.Seek(_tableRecord.Offset, SeekOrigin.Begin);
_version = OTFixed.ReadFixed(ms);
}
catch (OTDataIncompleteReadException e)
{
_validationStatus |= OTFile.OTFileValidation_ReadTrunctated;
throw new OTFileParseException("OT parse error: unable to read " + _tableTag + " table", e);
}
if (_version.Mantissa != 0 && _version.Mantissa != 1)
{
_validationStatus |= OTFile.OTFileValidation_StructureVersionNotSupported;
throw new OTUnknownVersionException("OT parse error: unrecognized " + _tableTag + " version");
}
switch (_version.Mantissa)
{
case 0:
if (_version.FixedTableMinorVersionToInteger() > _maxp_0_latestKnownMinorVersion)
{
_validationStatus |= OTFile.OTFileValidation_StructureMinorVersionUnknown;
}
if (_tableRecord.Length < _maxp_0_5_headerLength)
{
_validationStatus |= OTFile.OTFileValidation_TableLengthTooShort;
}
break;
case 1:
if (_version.FixedTableMinorVersionToInteger() > _maxp_1_latestKnownMinorVersion)
{
_validationStatus |= OTFile.OTFileValidation_StructureMinorVersionUnknown;
}
if (_tableRecord.Length < _maxp_1_0_headerLength)
{
_validationStatus |= OTFile.OTFileValidation_TableLengthTooShort;
}
break;
}
// Known version, OK to continue
try
{
_numGlyphs = OTFile.ReadUInt16(ms);
}
catch (OTDataIncompleteReadException e)
{
_validationStatus |= OTFile.OTFileValidation_ReadTrunctated;
throw new OTFileParseException("OT parse error: unable to read " + _tableTag + " table", e);
}
if (_version.Mantissa == 1)
{
try
{
_maxPoints = OTFile.ReadUInt16(ms);
_maxContours = OTFile.ReadUInt16(ms);
_maxCompositePoints = OTFile.ReadUInt16(ms);
_maxCompositeContours = OTFile.ReadUInt16(ms);
_maxZones = OTFile.ReadUInt16(ms);
_maxTwilightPoints = OTFile.ReadUInt16(ms);
_maxStorage = OTFile.ReadUInt16(ms);
_maxFunctionDefs = OTFile.ReadUInt16(ms);
_maxInstructionDefs = OTFile.ReadUInt16(ms);
_maxStackElements = OTFile.ReadUInt16(ms);
_maxSizeOfInstructions = OTFile.ReadUInt16(ms);
_maxComponentElements = OTFile.ReadUInt16(ms);
_maxComponentDepth = OTFile.ReadUInt16(ms);
}
catch (OTDataIncompleteReadException e)
{
_validationStatus |= OTFile.OTFileValidation_ReadTrunctated;
throw new OTFileParseException("OT parse error: unable to read " + _tableTag + " table", e);
}
}
} // ReadTable_Internal