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* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
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*
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package org.apache.pdfbox.preflight.font.descriptor;
import static org.apache.pdfbox.preflight.PreflightConstants.ERROR_FONTS_CIDSET_MISSING_FOR_SUBSET;
import static org.apache.pdfbox.preflight.PreflightConstants.ERROR_FONTS_CID_DAMAGED;
import static org.apache.pdfbox.preflight.PreflightConstants.ERROR_FONTS_FONT_FILEX_INVALID;
import static org.apache.pdfbox.preflight.PreflightConstants.FONT_DICTIONARY_KEY_CIDSET;
import static org.apache.pdfbox.preflight.PreflightConstants.FONT_DICTIONARY_VALUE_TYPE0C;
import static org.apache.pdfbox.preflight.PreflightConstants.FONT_DICTIONARY_VALUE_TYPE1C;
import java.io.IOException;
import java.util.List;
import org.apache.fontbox.cff.CFFFont;
import org.apache.fontbox.cff.CFFParser;
import org.apache.pdfbox.cos.COSBase;
import org.apache.pdfbox.cos.COSDocument;
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.PDFontDescriptor;
import org.apache.pdfbox.pdmodel.font.PDFontLike;
import org.apache.pdfbox.preflight.PreflightContext;
import org.apache.pdfbox.preflight.ValidationResult;
import org.apache.pdfbox.preflight.ValidationResult.ValidationError;
import org.apache.pdfbox.preflight.font.FontValidator;
import org.apache.pdfbox.preflight.font.container.CIDType0Container;
import org.apache.pdfbox.preflight.utils.COSUtils;
public class CIDType0DescriptorHelper extends FontDescriptorHelper<CIDType0Container>
{
public CIDType0DescriptorHelper(PreflightContext context, PDFontLike font, CIDType0Container fontContainer)
{
super(context, font, fontContainer);
}
@Override
public PDStream extractFontFile(PDFontDescriptor fontDescriptor)
{
PDStream ff3 = fontDescriptor.getFontFile3();
if (ff3 != null)
{
// Stream validation should be done by the StreamValidateHelper. Process font specific check
COSStream stream = ff3.getStream();
if (stream == null)
{
this.fContainer.push(new ValidationError(ERROR_FONTS_FONT_FILEX_INVALID, "The FontFile is missing for "
+ fontDescriptor.getFontName()));
this.fContainer.notEmbedded();
}
else
{
// Length1/2/3 aren't mandatory for this type of font
// But the Subtype is a mandatory field with specific values
String st = stream.getNameAsString(COSName.SUBTYPE);
if (!(FONT_DICTIONARY_VALUE_TYPE0C.equals(st) || FONT_DICTIONARY_VALUE_TYPE1C.equals(st)))
{
this.fContainer.push(new ValidationError(ERROR_FONTS_FONT_FILEX_INVALID,
"The FontFile3 stream doesn't have the right Subtype for " + fontDescriptor.getFontName()));
}
checkCIDSet(fontDescriptor);
}
}
return ff3;
}
/**
* If the embedded font is a subset, the CIDSet entry is mandatory and must be a Stream. If the CIDSet entry doesn't
* respects conditions, the FontContainer is updated.
*
* @param pfDescriptor
*/
protected void checkCIDSet(PDFontDescriptor pfDescriptor)
{
if (FontValidator.isSubSet(pfDescriptor.getFontName()))
{
COSDocument cosDocument = context.getDocument().getDocument();
COSBase cidset = pfDescriptor.getCOSObject().getItem(COSName.getPDFName(FONT_DICTIONARY_KEY_CIDSET));
if (cidset == null || !COSUtils.isStream(cidset, cosDocument))
{
this.fContainer.push(new ValidationResult.ValidationError(ERROR_FONTS_CIDSET_MISSING_FOR_SUBSET,
"The CIDSet entry is missing for the Composite Subset"));
}
}
}
@Override
protected void processFontFile(PDFontDescriptor fontDescriptor, PDStream fontFile)
{
if (font.isDamaged())
{
this.fContainer.push(new ValidationError(ERROR_FONTS_CID_DAMAGED, "The FontFile can't be read"));
}
}
}