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🔨 compress content stream
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@hwding
hwding committed Feb 12, 2019
1 parent 8ea7c89 commit 10c6311
Showing 1 changed file with 3 additions and 1 deletion.
4 changes: 3 additions & 1 deletion src/com/amastigote/unstamper/core/Processor.java
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,7 @@
import com.sun.istack.internal.NotNull;
import org.apache.pdfbox.contentstream.operator.Operator;
import org.apache.pdfbox.cos.COSArray;
import org.apache.pdfbox.cos.COSName;
import org.apache.pdfbox.cos.COSString;
import org.apache.pdfbox.pdfparser.PDFStreamParser;
import org.apache.pdfbox.pdfwriter.ContentStreamWriter;
Expand Down Expand Up @@ -127,8 +128,9 @@ public static void process(

/* >> write modified tokens back to the stream */
PDStream newContents = new PDStream(pdDocument);
OutputStream out = newContents.createOutputStream();
OutputStream out = newContents.createOutputStream(COSName.FLATE_DECODE);
ContentStreamWriter writer = new ContentStreamWriter(out);

writer.writeTokens(objects);
out.close();
/* << write modified tokens back to the stream */
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3 comments on commit 10c6311

@hwding
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@hwding hwding commented on 10c6311 Feb 16, 2019

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#5

@DonaldTsang
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Would this change some of the content-defined-chunk hashes?
static_chunking
dynamic_chunking1

@hwding
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@hwding hwding commented on 10c6311 Feb 16, 2019 •
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@DonaldTsang Any kind of editing leads to hash change, compress only fixes the issue which compressed content was no longer compressed after removing the watermark.

In some circumstances, the edited file slightly inflates and in others, slightly deflates, it might affect some chunkes.

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