eu.europa.esig.dss.pdf.pdfbox.PdfBoxDict.java Source code

Introduction

Here is the source code for eu.europa.esig.dss.pdf.pdfbox.PdfBoxDict.java

Source

/**
 * DSS - Digital Signature Services
 * Copyright (C) 2015 European Commission, provided under the CEF programme
 *
 * This file is part of the "DSS - Digital Signature Services" project.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
package eu.europa.esig.dss.pdf.pdfbox;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;

import org.apache.pdfbox.cos.COSArray;
import org.apache.pdfbox.cos.COSBase;
import org.apache.pdfbox.cos.COSDictionary;
import org.apache.pdfbox.cos.COSName;
import org.apache.pdfbox.cos.COSString;
import org.apache.pdfbox.pdmodel.PDDocument;

import eu.europa.esig.dss.pdf.PdfArray;
import eu.europa.esig.dss.pdf.PdfDict;

class PdfBoxDict implements PdfDict {

    private COSDictionary wrapped;
    private PDDocument document;

    public PdfBoxDict(COSDictionary wrapped, PDDocument document) {
        this.wrapped = wrapped;
        this.document = document;
    }

    @Override
    public PdfDict getAsDict(String name) {
        COSDictionary dict = (COSDictionary) wrapped.getDictionaryObject(name);
        if (dict == null) {
            return null;
        }
        return new PdfBoxDict(dict, document);
    }

    @Override
    public PdfArray getAsArray(String name) {
        COSArray array = (COSArray) wrapped.getDictionaryObject(name);
        if (array == null) {
            return null;
        }
        return new PdfBoxArray(array, document);
    }

    @Override
    public boolean hasAName(String name) {
        COSBase dictionaryObject = wrapped.getDictionaryObject(name);
        if (dictionaryObject == null) {
            return false;
        }
        return true;
    }

    @Override
    public boolean hasANameWithValue(String name, String value) {
        COSName pdfName = (COSName) wrapped.getDictionaryObject(name);
        if (pdfName == null) {
            return false;
        }
        return pdfName.getName().equals(value);
    }

    @Override
    public byte[] get(String name) throws IOException {
        COSBase val = wrapped.getDictionaryObject(name);
        if (val == null) {
            return null;
        }
        if (val instanceof COSString) {
            return ((COSString) val).getBytes();
        }
        if (val instanceof COSName) {
            return ((COSName) val).getName().getBytes();
        }
        throw new IOException(
                name + " was expected to be a COSString element but was " + val.getClass() + " : " + val);
    }

    @Override
    public String[] list() {
        final Set<COSName> cosNames = wrapped.keySet();
        List<String> result = new ArrayList<String>(cosNames.size());
        for (final COSName cosName : cosNames) {
            final String name = cosName.getName();
            result.add(name);
        }
        return result.toArray(new String[result.size()]);
    }

    @Override
    public String toString() {
        return wrapped.toString();
    }

}