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Posted to dev@pdfbox.apache.org by "John Hewson (JIRA)" <ji...@apache.org> on 2016/07/06 01:06:11 UTC
[jira] [Comment Edited] (PDFBOX-3403) IllegalArgumentException:
Symbolic fonts must have a built-in encoding
[ https://issues.apache.org/jira/browse/PDFBOX-3403?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15363568#comment-15363568 ]
John Hewson edited comment on PDFBOX-3403 at 7/6/16 1:06 AM:
-------------------------------------------------------------
Unfortunately this fix was not a good choice. The exception which was thrown is there to verify PDFBox's internal consistency, and bypassing it now allows PDFBox to get into an inconsistent state where invariants such as "getBaseEncoding() never returns null" being violated.
As the exception says, symbolic fonts *must* have a built-in encoding. It's the job of the caller of this function to make sure the inputs are correct - that what needs to happen.
The `readEncoding()` method of `PDSimpleFont` is responsible for reading, and making fixes to encodings. This code should be making sure that the invariants set by DictionaryEncoding are satisfied, rather than forcing through invalid data. *MacExpertEncoding* is in fact a valid encoding and we need to support it.
was (Author: jahewson):
Unfortunately this fix was not a good choice. The exception which was thrown is there to verify PDFBox's internal consistency, and bypassing it now allows PDFBox to get into an inconsistent state where invariants such as getBaseEncoding() never returns null being violated.
As the exception says, symbolic fonts *must* have a built-in encoding. It's the job of the caller of this function to make sure the inputs are correct - that what needs to happen.
The `readEncoding()` method of `PDSimpleFont` is responsible for reading, and making fixes to encodings. This code should be making sure that the invariants set by DictionaryEncoding are satisfied, rather than forcing through invalid data. *MacExpertEncoding* is in fact a valid encoding and we need to support it.
> IllegalArgumentException: Symbolic fonts must have a built-in encoding
> ----------------------------------------------------------------------
>
> Key: PDFBOX-3403
> URL: https://issues.apache.org/jira/browse/PDFBOX-3403
> Project: PDFBox
> Issue Type: Bug
> Components: PDModel
> Affects Versions: 2.0.2, 2.0.3, 2.1.0
> Reporter: Tilman Hausherr
> Assignee: Tilman Hausherr
> Fix For: 2.0.3, 2.1.0
>
> Attachments: PDFBOX-3403.pdf
>
>
> Happens with text extraction and rendering:
> {code}
> Exception in thread "main" java.lang.IllegalArgumentException: Symbolic fonts must have a built-in encoding
> at org.apache.pdfbox.pdmodel.font.encoding.DictionaryEncoding.<init>(DictionaryEncoding.java:113)
> at org.apache.pdfbox.pdmodel.font.PDSimpleFont.readEncoding(PDSimpleFont.java:126)
> at org.apache.pdfbox.pdmodel.font.PDType1CFont.<init>(PDType1CFont.java:131)
> at org.apache.pdfbox.pdmodel.font.PDFontFactory.createFont(PDFontFactory.java:60)
> at org.apache.pdfbox.pdmodel.PDResources.getFont(PDResources.java:123)
> at org.apache.pdfbox.contentstream.operator.text.SetFontAndSize.process(SetFontAndSize.java:60)
> at org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
> {code}
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