bool Validate_indexSubTable_format5(Validator v, indexSubTable5 ist5, indexSubTableArray ista, string sID, OTFontVal fontOwner)
{
bool bOk = true;
Table_EBDT EBDTTable = (Table_EBDT)fontOwner.GetTable("EBDT");
// header has already been validated
// validate the image size
if (ist5.numGlyphs * ist5.imageSize > EBDTTable.GetLength())
{
string sDetails = "images extend past end of EBDT table: " + sID + ", imageSize = " + ist5.imageSize
+ ", EBDT length = " + EBDTTable.GetLength();
v.Error(T.EBLC_indexSubTables, E.EBLC_E_indexSubTables, m_tag, sDetails);
bOk = false;
}
// validate the bigGlyphMetrics
val_EBDT.bigGlyphMetrics_val bgm = val_EBDT.bigGlyphMetrics_val.CreateFromBigGlyphMetrics(ist5.bigMetrics);
bgm.Validate(v, sID, this);
// validate numGlyphs
uint nGlyphsInRange = (uint)ista.lastGlyphIndex - ista.firstGlyphIndex + 1;
if (ist5.numGlyphs > nGlyphsInRange)
{
string sDetails = "numGlyphs is invalid: " + sID +
", numGlyphs = " + ist5.numGlyphs +
", indexSubTableArray.firstGlyphIndex = " + ista.firstGlyphIndex +
", indexSubTableArray.lastGlyphIndex = " + ista.lastGlyphIndex;
v.Error(T.EBLC_indexSubTables, E.EBLC_E_indexSubTables, m_tag, sDetails);
bOk = false;
}
// validate glyphCodeArray
for (ushort i = 0; i < ist5.numGlyphs; i++)
{
ushort idGlyph = ist5.GetGlyphCode(i);
if (idGlyph < ista.firstGlyphIndex || idGlyph > ista.lastGlyphIndex)
{
string sDetails = "invalid glyph id: " + sID +
", glyphCodeArray[" + i + "] = " + idGlyph +
", indexSubTableArray.firstGlyphIndex = " + ista.firstGlyphIndex +
", indexSubTableArray.lastGlyphIndex = " + ista.lastGlyphIndex;
v.Error(T.EBLC_indexSubTables, E.EBLC_E_indexSubTables, m_tag, sDetails);
bOk = false;
}
}
return(bOk);
}
public indexSubTable GetIndexSubTable(indexSubTableArray ista)
{
indexSubTable ist = null;
uint offset = indexSubTableArrayOffset + ista.additionalOffsetToIndexSubtable;
if (offset + (uint)indexSubHeader.FieldOffsets.indexFormat + 2 <= m_bufTable.GetLength())
{
ushort indexFormat = m_bufTable.GetUshort(offset + (uint)indexSubHeader.FieldOffsets.indexFormat);
switch(indexFormat)
{
case 1:
{
indexSubTable1 ist1 = new indexSubTable1(offset, m_bufTable, ista);
ist = ist1;
break;
}
case 2:
{
indexSubTable2 ist2 = new indexSubTable2(offset, m_bufTable, ista);
ist = ist2;
ist2.bigMetrics = new Table_EBDT.bigGlyphMetrics();
ist2.imageSize = m_bufTable.GetUint(offset + indexSubTable.headerLength);
ist2.bigMetrics.height = m_bufTable.GetByte (offset + indexSubTable.headerLength + 4);
ist2.bigMetrics.width = m_bufTable.GetByte (offset + indexSubTable.headerLength + 5);
ist2.bigMetrics.horiBearingX = m_bufTable.GetSbyte(offset + indexSubTable.headerLength + 6);
ist2.bigMetrics.horiBearingY = m_bufTable.GetSbyte(offset + indexSubTable.headerLength + 7);
ist2.bigMetrics.horiAdvance = m_bufTable.GetByte (offset + indexSubTable.headerLength + 8);
ist2.bigMetrics.vertBearingX = m_bufTable.GetSbyte(offset + indexSubTable.headerLength + 9);
ist2.bigMetrics.vertBearingY = m_bufTable.GetSbyte(offset + indexSubTable.headerLength + 10);
ist2.bigMetrics.vertAdvance = m_bufTable.GetByte (offset + indexSubTable.headerLength + 11);
break;
}
case 3:
{
indexSubTable3 ist3 = new indexSubTable3(offset, m_bufTable, ista);
ist = ist3;
break;
}
case 4:
{
indexSubTable4 ist4 = new indexSubTable4(offset, m_bufTable, ista);
ist = ist4;
ist4.numGlyphs = m_bufTable.GetUint(offset + indexSubTable.headerLength);
break;
}
case 5:
{
indexSubTable5 ist5 = new indexSubTable5(offset, m_bufTable, ista);
ist = ist5;
ist5.bigMetrics = new Table_EBDT.bigGlyphMetrics();
ist5.imageSize = m_bufTable.GetUint(offset + indexSubTable.headerLength);
ist5.bigMetrics.height = m_bufTable.GetByte (offset + indexSubTable.headerLength + 4);
ist5.bigMetrics.width = m_bufTable.GetByte (offset + indexSubTable.headerLength + 5);
ist5.bigMetrics.horiBearingX = m_bufTable.GetSbyte(offset + indexSubTable.headerLength + 6);
ist5.bigMetrics.horiBearingY = m_bufTable.GetSbyte(offset + indexSubTable.headerLength + 7);
ist5.bigMetrics.horiAdvance = m_bufTable.GetByte (offset + indexSubTable.headerLength + 8);
ist5.bigMetrics.vertBearingX = m_bufTable.GetSbyte(offset + indexSubTable.headerLength + 9);
ist5.bigMetrics.vertBearingY = m_bufTable.GetSbyte(offset + indexSubTable.headerLength + 10);
ist5.bigMetrics.vertAdvance = m_bufTable.GetByte (offset + indexSubTable.headerLength + 11);
ist5.numGlyphs = m_bufTable.GetUint(offset + indexSubTable.headerLength + 12);
break;
}
}
}
return ist;
}
bool Validate_indexSubTable_format5(Validator v, indexSubTable5 ist5, indexSubTableArray ista, string sID, OTFontVal fontOwner)
{
bool bOk = true;
Table_EBDT EBDTTable = (Table_EBDT)fontOwner.GetTable("EBDT");
// header has already been validated
// validate the image size
if (ist5.numGlyphs*ist5.imageSize > EBDTTable.GetLength())
{
string sDetails = "images extend past end of EBDT table: " + sID + ", imageSize = " + ist5.imageSize
+ ", EBDT length = " + EBDTTable.GetLength();
v.Error(T.EBLC_indexSubTables, E.EBLC_E_indexSubTables, m_tag, sDetails);
bOk = false;
}
// validate the bigGlyphMetrics
val_EBDT.bigGlyphMetrics_val bgm = val_EBDT.bigGlyphMetrics_val.CreateFromBigGlyphMetrics(ist5.bigMetrics);
bgm.Validate(v, sID, this);
// validate numGlyphs
uint nGlyphsInRange = (uint)ista.lastGlyphIndex - ista.firstGlyphIndex + 1;
if (ist5.numGlyphs > nGlyphsInRange)
{
string sDetails = "numGlyphs is invalid: " + sID +
", numGlyphs = " + ist5.numGlyphs +
", indexSubTableArray.firstGlyphIndex = " + ista.firstGlyphIndex +
", indexSubTableArray.lastGlyphIndex = " + ista.lastGlyphIndex;
v.Error(T.EBLC_indexSubTables, E.EBLC_E_indexSubTables, m_tag, sDetails);
bOk = false;
}
// validate glyphCodeArray
for (ushort i=0; i<ist5.numGlyphs; i++)
{
ushort idGlyph = ist5.GetGlyphCode(i);
if (idGlyph < ista.firstGlyphIndex || idGlyph > ista.lastGlyphIndex)
{
string sDetails = "invalid glyph id: " + sID +
", glyphCodeArray[" + i + "] = " + idGlyph +
", indexSubTableArray.firstGlyphIndex = " + ista.firstGlyphIndex +
", indexSubTableArray.lastGlyphIndex = " + ista.lastGlyphIndex;
v.Error(T.EBLC_indexSubTables, E.EBLC_E_indexSubTables, m_tag, sDetails);
bOk = false;
}
}
return bOk;
}
