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Posted to dev@pdfbox.apache.org by "Axel Howind (Jira)" <ji...@apache.org> on 2025/05/02 04:21:00 UTC

[jira] [Created] (PDFBOX-5999) fix initial ByteArrayOutputStream size for deflate operation

Axel Howind created PDFBOX-5999:
-----------------------------------

             Summary: fix initial ByteArrayOutputStream size for deflate operation
                 Key: PDFBOX-5999
                 URL: https://issues.apache.org/jira/browse/PDFBOX-5999
             Project: PDFBox
          Issue Type: Bug
            Reporter: Axel Howind
         Attachments: fix_initial_ByteArrayOutputStream_size.patch

When I re-checked my last patch about initializing ByteArrayOutputStream instances with the matching size, I saw that I confused the deflate and inflate operations. Here the resulting array can be expected less in size than the original array:

```
        ByteArrayOutputStream deflated = new ByteArrayOutputStream(Math.max(32, data.length / 2));
```

The patch fixes this and allocates half the size of the deflater input. This should be a good enough estimate in most cases.



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