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package org.apache.pdfbox.preflight.font.descriptor;
import static org.apache.pdfbox.preflight.PreflightConstants.ERROR_FONTS_ENCODING;
import static org.apache.pdfbox.preflight.PreflightConstants.ERROR_FONTS_FONT_FILEX_INVALID;
import static org.apache.pdfbox.preflight.PreflightConstants.ERROR_FONTS_TRUETYPE_DAMAGED;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import org.apache.commons.io.IOUtils;
import org.apache.fontbox.ttf.TTFParser;
import org.apache.fontbox.ttf.TrueTypeFont;
import org.apache.pdfbox.cos.COSName;
import org.apache.pdfbox.cos.COSStream;
import org.apache.pdfbox.pdmodel.common.PDStream;
import org.apache.pdfbox.pdmodel.font.PDFont;
import org.apache.pdfbox.pdmodel.font.PDFontDescriptor;
import org.apache.pdfbox.pdmodel.font.PDTrueTypeFont;
import org.apache.pdfbox.preflight.PreflightContext;
import org.apache.pdfbox.preflight.ValidationResult.ValidationError;
import org.apache.pdfbox.preflight.font.container.TrueTypeContainer;
public class TrueTypeDescriptorHelper extends FontDescriptorHelper<TrueTypeContainer>
{
private final PDTrueTypeFont pdTrueTypeFont;
public TrueTypeDescriptorHelper(PreflightContext context, PDTrueTypeFont font, TrueTypeContainer fontContainer)
{
super(context, font, fontContainer);
pdTrueTypeFont = font;
}
@Override
public PDStream extractFontFile(PDFontDescriptor fontDescriptor)
{
PDStream fontFile = fontDescriptor.getFontFile2();
COSStream stream = (fontFile == null ? null : fontFile.getStream());
if (stream == null)
{
this.fContainer.push(new ValidationError(ERROR_FONTS_FONT_FILEX_INVALID, "The FontFile2 is missing for "
+ fontDescriptor.getFontName()));
this.fContainer.notEmbedded();
return null;
}
if (stream.getInt(COSName.LENGTH1) <= 0)
{
this.fContainer.push(new ValidationError(ERROR_FONTS_FONT_FILEX_INVALID,
"The FontFile entry /Length1 is invalid for " + fontDescriptor.getFontName()));
return null;
}
return fontFile;
}
@Override
protected void processFontFile(PDFontDescriptor fontDescriptor, PDStream fontFile)
{
if (font.isDamaged())
{
this.fContainer.push(new ValidationError(ERROR_FONTS_TRUETYPE_DAMAGED,
"The FontFile can't be read for " + this.font.getName()));
}
else
{
// there must be exactly one encoding in the "cmap" table if the font is symbolic
TrueTypeFont ttf = pdTrueTypeFont.getTrueTypeFont();
try
{
if (pdTrueTypeFont.isSymbolic() && ttf.getCmap().getCmaps().length != 1)
{
this.fContainer.push(new ValidationError(ERROR_FONTS_ENCODING,
"Symbolic TrueType font has more than one 'cmap' entry for " +
this.font.getName()));
}
}
catch (IOException e)
{
this.fContainer.push(new ValidationError(ERROR_FONTS_TRUETYPE_DAMAGED,
"The TTF 'cmap' could not be read for " + this.font.getName()));
}
}
}
}