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package net.sf.basedb.reggie.pdf; |
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import java.io.IOException; |
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import java.io.InputStream; |
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import java.io.OutputStream; |
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import net.lingala.zip4j.exception.ZipException; |
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import net.lingala.zip4j.io.ZipOutputStream; |
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import net.lingala.zip4j.model.ZipParameters; |
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import net.lingala.zip4j.util.Zip4jConstants; |
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import net.sf.basedb.util.FileUtil; |
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/** |
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Combine PDF files info a ZIP archive. Entryption |
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is supported. |
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@since 4.3 |
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*/ |
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public class PdfToZipCombiner |
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extends PdfCombiner |
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{ |
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private ZipOutputStream zip; |
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private String password; |
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/** |
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Create a combiner that writes the ZIP file to the |
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given output stream. If a password is given the |
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entries are encrypted. Default encryption method |
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is 256-bit AES. |
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*/ |
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public PdfToZipCombiner(OutputStream out, String password) |
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{ |
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super("application/zip", ".zip"); |
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this.zip = new ZipOutputStream(out); |
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this.password = password; |
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} |
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@Override |
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public boolean supportsEncryptBeforeCombine() |
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{ |
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return true; |
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} |
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|
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@Override |
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public void close() |
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throws IOException |
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{ |
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try |
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{ |
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zip.flush(); |
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zip.finish(); |
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} |
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catch (ZipException ex) |
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{ |
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throw new IOException(ex); |
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} |
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finally |
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{ |
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FileUtil.close(zip); |
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zip = null; |
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} |
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} |
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@Override |
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public boolean addFile(InputStream pdf, String pdfName) |
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throws IOException |
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{ |
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try |
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{ |
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ZipParameters zipParameters = new ZipParameters(); |
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zipParameters.setSourceExternalStream(true); |
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zipParameters.setFileNameInZip(pdfName); |
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zipParameters.setCompressionMethod(Zip4jConstants.COMP_DEFLATE); |
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zipParameters.setCompressionLevel(Zip4jConstants.DEFLATE_LEVEL_NORMAL); |
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if (password != null) |
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{ |
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zipParameters.setEncryptFiles(true); |
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zipParameters.setEncryptionMethod(Zip4jConstants.ENC_METHOD_AES); |
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zipParameters.setAesKeyStrength(Zip4jConstants.AES_STRENGTH_256); |
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zipParameters.setPassword(password); |
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} |
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zip.putNextEntry(null, zipParameters); |
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|
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FileUtil.copy(pdf, zip); |
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zip.flush(); |
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zip.closeEntry(); |
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} |
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catch (ZipException ex) |
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{ |
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throw new IOException(ex); |
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} |
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return true; |
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} |
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|
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} |
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