/**
* Constructor.
*
* @param fontDictionary The font dictionary according to the PDF specification.
* @param parent The parent font.
* @param trueTypeFont The true type font used to create the parent font
* @throws IOException
*/
public CIDFontType2(PdfDirectObject fontDictionary, PdfType0Font parent, TrueTypeFont trueTypeFont)
: base(fontDictionary, parent)
{
FontDescriptor fd = FontDescriptor;
if (trueTypeFont != null)
{
ttf = trueTypeFont;
isEmbedded = true;
isDamaged = false;
}
else
{
bool fontIsDamaged = false;
TrueTypeFont ttfFont = null;
FontFile stream = null;
if (fd != null)
{
// Acrobat looks in FontFile too, even though it is not in the spec, see PDFBOX-2599
stream = fd.FontFile2 ?? fd.FontFile3 ?? fd.FontFile;
}
if (stream != null)
{
try
{
// embedded OTF or TTF
OTFParser otfParser = new OTFParser(true);
ttfFont = otfParser.Parse((Bytes.Buffer)stream.BaseDataObject.ExtractBody(true), fd.FontName);
if (ttfFont is OpenTypeFont otf && otf.IsPostScript)
{
// PDFBOX-3344 contains PostScript outlines instead of TrueType
fontIsDamaged = true;
Debug.WriteLine($"warning: Found CFF/OTF but expected embedded TTF font {fd.FontName}");
}
}
catch (IOException e)
{
fontIsDamaged = true;
Debug.WriteLine($"warning: Could not read embedded OTF for font {BaseFont} {e}");
}
}
isEmbedded = ttfFont != null;
isDamaged = fontIsDamaged;
if (ttfFont == null)
{
ttfFont = FindFontOrSubstitute();
}
ttf = ttfFont;
}
cmapLookup = ttf.GetUnicodeCmapLookup(false);
cid2gid = ReadCIDToGIDMap();
}
internal static Type1Font LoadType1Font(FontFile fontFile)
{
Type1Font t1 = null;
var stream = fontFile.BaseDataObject;
int length1 = fontFile.Length1;
int length2 = fontFile.Length2;
// repair Length1 and Length2 if necessary
byte[] bytes = stream.ExtractBody(true).GetBuffer();
length1 = RepairLength1(bytes, length1);
length2 = RepairLength2(bytes, length1, length2);
if (bytes.Length > 0 && (bytes[0] & 0xff) == PFB_START_MARKER)
{
// some bad files embed the entire PFB, see PDFBOX-2607
t1 = Type1Font.CreateWithPFB(bytes);
}
else
{
// the PFB embedded as two segments back-to-back
byte[] segment1 = new byte[length1];
Array.Copy(bytes, 0, segment1, 0, length1);
byte[] segment2 = new byte[length2];
Array.Copy(bytes, length1, segment2, 0, length2);
// empty streams are simply ignored
if (length1 > 0 && length2 > 0)
{
t1 = Type1Font.CreateWithSegments(segment1, segment2);
}
}
return(t1);
}
/**
* Constructor.
*
* @param fontDictionary The font dictionary according to the PDF specification.
* @param parent The parent font.
*/
public CIDFontType0(PdfDirectObject fontDictionary, PdfType0Font parent)
: base(fontDictionary, parent)
{
FontDescriptor fd = FontDescriptor;
FontFile fontFile = null;
byte[] bytes = null;
if (fd != null)
{
fontFile = fd.FontFile3 ?? fd.FontFile;
if (fontFile != null)
{
bytes = fontFile.BaseDataObject.ExtractBody(true).GetBuffer();
}
}
bool fontIsDamaged = false;
CFFFont cffFont = null;
if (bytes != null && bytes.Length > 0 && (bytes[0] & 0xff) == '%')
{
// PDFBOX-2642 contains a corrupt PFB font instead of a CFF
Debug.WriteLine("warn: Found PFB but expected embedded CFF font " + fd.FontName);
try
{
t1Font = PdfType1Font.LoadType1Font(fontFile);
}
catch (DamagedFontException e)
{
Debug.WriteLine($"warn: Can't read damaged embedded Type1 font {fd.FontName} {e}");
fontIsDamaged = true;
}
catch (IOException e)
{
Debug.WriteLine($"error: Can't read the embedded Type1 font {fd.FontName} {e}");
fontIsDamaged = true;
}
}
else if (bytes != null)
{
CFFParser cffParser = new CFFParser();
try
{
cffFont = cffParser.Parse(bytes, new FF3ByteSource(fd, bytes))[0];
}
catch (IOException e)
{
Debug.WriteLine("error: Can't read the embedded CFF font " + fd.FontName, e);
fontIsDamaged = true;
}
}
if (cffFont != null)
{
// embedded
if (cffFont is CFFCIDFont)
{
cidFont = (CFFCIDFont)cffFont;
t1Font = null;
}
else
{
cidFont = null;
t1Font = cffFont;
}
cid2gid = ReadCIDToGIDMap();
isEmbedded = true;
isDamaged = false;
}
else if (t1Font != null)
{
if (t1Font is Type1Font type1Font)
{
cidFont = null;
}
cid2gid = ReadCIDToGIDMap();
isEmbedded = true;
isDamaged = false;
}
else
{
// find font or substitute
CIDFontMapping mapping = FontMappers.Instance.GetCIDFont(BaseFont, FontDescriptor, CIDSystemInfo);
BaseFont font;
if (mapping.IsCIDFont)
{
cffFont = mapping.Font.CFF.Font;
if (cffFont is CFFCIDFont)
{
cidFont = (CFFCIDFont)cffFont;
t1Font = null;
font = cidFont;
}
else
{
// PDFBOX-3515: OpenType fonts are loaded as CFFType1Font
CFFType1Font f = (CFFType1Font)cffFont;
cidFont = null;
t1Font = f;
font = f;
}
}
else
{
cidFont = null;
t1Font = mapping.TrueTypeFont;
font = t1Font;
}
if (mapping.IsFallback)
{
Debug.WriteLine($"warning: Using fallback {font.Name} for CID-keyed font {BaseFont}");
}
isEmbedded = false;
isDamaged = fontIsDamaged;
}
fontMatrixTransform = FontMatrix;
fontMatrixTransform = fontMatrixTransform.PostConcat(SKMatrix.CreateScale(1000, 1000));
}