/**
* This will read the required data from the stream.
*
* @param ttf The font that is being read.
* @param data The stream to read the data from.
* @ If there is an error reading the data.
*/
public override void Read(TrueTypeFont ttf, TTFDataStream data)
{
int formatSelector = data.ReadUnsignedShort();
int numberOfNameRecords = data.ReadUnsignedShort();
int offsetToStartOfStringStorage = data.ReadUnsignedShort();
nameRecords = new List <NameRecord>(numberOfNameRecords);
for (int i = 0; i < numberOfNameRecords; i++)
{
NameRecord nr = new NameRecord();
nr.InitData(ttf, data);
nameRecords.Add(nr);
}
foreach (NameRecord nr in nameRecords)
{
// don't try to read invalid offsets, see PDFBOX-2608
if (nr.StringOffset > Length)
{
nr.Text = null;
continue;
}
data.Seek(Offset + (2 * 3) + numberOfNameRecords * 2 * 6 + nr.StringOffset);
int platform = nr.PlatformId;
int encoding = nr.PlatformEncodingId;
var charset = Charset.ISO88591;
if (platform == NameRecord.PLATFORM_UNICODE)
{
charset = Charset.UTF16BE;
}
else if (platform == NameRecord.PLATFORM_WINDOWS)
{
if (encoding == NameRecord.ENCODING_WIN_SYMBOL ||
encoding == NameRecord.ENCODING_WIN_UNICODE_BMP)
{
charset = Charset.UTF16BE;
}
}
else if (platform == NameRecord.PLATFORM_MACINTOSH)
{
if (encoding == NameRecord.ENCODING_MAC_ROMAN)
{
charset = Charset.GetEnconding("x-mac-romanian");
}
else if (encoding == NameRecord.ENCODING_MAC_JAPANESE)
{
charset = Charset.GetEnconding("x-mac-japanese");
}
else if (encoding == NameRecord.ENCODING_MAC_CHINESE_TRAD)
{
charset = Charset.GetEnconding("x-mac-chinesetrad");
}
else if (encoding == NameRecord.ENCODING_MAC_CHINESE_SIMP)
{
charset = Charset.GetEnconding("x-mac-chinesesimp");
}
else if (encoding == NameRecord.ENCODING_MAC_KOREAN)
{
charset = Charset.GetEnconding("x-mac-korean");
}
else if (encoding == NameRecord.ENCODING_MAC_ARABIC)
{
charset = Charset.GetEnconding("x-mac-arabic");
}
else if (encoding == NameRecord.ENCODING_MAC_HEBREW)
{
charset = Charset.GetEnconding("x-mac-hebrew");
}
else if (encoding == NameRecord.ENCODING_MAC_GREEK)
{
charset = Charset.GetEnconding("x-mac-greek");
}
else if (encoding == NameRecord.ENCODING_MAC_RUSSIAN)
{
charset = Charset.GetEnconding("x-mac-cyrillic");
}
else if (encoding == NameRecord.ENCODING_MAC_THAI)
{
charset = Charset.GetEnconding("x-mac-thai");
}
}
else if (platform == NameRecord.PLATFORM_ISO)
{
switch (encoding)
{
case 0:
charset = Charset.ASCII;
break;
case 1:
//not sure is this is correct??
charset = Charset.UTF16BE;
break;
case 2:
charset = Charset.ISO88591;
break;
default:
break;
}
}
string text = data.ReadString(nr.StringLength, charset);
nr.Text = text;
}
// build multi-dimensional lookup table
lookupTable = new Dictionary <int, Dictionary <int, Dictionary <int, Dictionary <int, string> > > >(nameRecords.Count);
foreach (NameRecord nr in nameRecords)
{
// name id
if (!lookupTable.TryGetValue(nr.NameId, out var platformLookup))
{
platformLookup = new Dictionary <int, Dictionary <int, Dictionary <int, string> > >();
lookupTable[nr.NameId] = platformLookup;
}
// platform id
if (!platformLookup.TryGetValue(nr.PlatformId, out var encodingLookup))
{
encodingLookup = new Dictionary <int, Dictionary <int, string> >();
platformLookup[nr.PlatformId] = encodingLookup;
}
// encoding id
if (!encodingLookup.TryGetValue(nr.PlatformEncodingId, out var languageLookup))
{
languageLookup = new Dictionary <int, string>();
encodingLookup[nr.PlatformEncodingId] = languageLookup;
}
// language id / string
languageLookup[nr.LanguageId] = nr.Text;
}
// extract strings of interest
fontFamily = GetEnglishName(NameRecord.NAME_FONT_FAMILY_NAME);
fontSubFamily = GetEnglishName(NameRecord.NAME_FONT_SUB_FAMILY_NAME);
// extract PostScript name, only these two formats are valid
psName = GetName(NameRecord.NAME_POSTSCRIPT_NAME,
NameRecord.PLATFORM_MACINTOSH,
NameRecord.ENCODING_MAC_ROMAN,
NameRecord.LANGUGAE_MAC_ENGLISH);
if (psName == null)
{
psName = GetName(NameRecord.NAME_POSTSCRIPT_NAME,
NameRecord.PLATFORM_WINDOWS,
NameRecord.ENCODING_WIN_UNICODE_BMP,
NameRecord.LANGUGAE_WIN_EN_US);
}
if (psName != null)
{
psName = psName.Trim();
}
initialized = true;
}
