Extensions in content type mapping are case sensitive

[jban]

Hi,

attached is a simple docx file that was created by Word 2010 and it cannot be parsed by docx4j 2.5.0: it throws this exception:

org.docx4j.openpackaging.exceptions.Docx4JException: Failed to add parts from relationships
at org.docx4j.openpackaging.io.LoadFromZipNG.addPartsFromRelationships(LoadFromZipNG.java:346)
at org.docx4j.openpackaging.io.LoadFromZipNG.process(LoadFromZipNG.java:229)
at org.docx4j.openpackaging.io.LoadFromZipNG.get(LoadFromZipNG.java:182)
(...)
Caused by: org.docx4j.openpackaging.exceptions.Docx4JException: Failed to add parts from relationships
at org.docx4j.openpackaging.io.LoadFromZipNG.addPartsFromRelationships(LoadFromZipNG.java:346)
at org.docx4j.openpackaging.io.LoadFromZipNG.getPart(LoadFromZipNG.java:436)
at org.docx4j.openpackaging.io.LoadFromZipNG.addPartsFromRelationships(LoadFromZipNG.java:344)
... 22 more
Caused by: java.lang.IllegalArgumentException: part
at org.docx4j.openpackaging.parts.relationships.RelationshipsPart.loadPart(RelationshipsPart.java:390)
at org.docx4j.openpackaging.io.LoadFromZipNG.getPart(LoadFromZipNG.java:420)
at org.docx4j.openpackaging.io.LoadFromZipNG.addPartsFromRelationships(LoadFromZipNG.java:344)
... 24 more


I have found the reason why parsing fails: the [Content_Types].xml file contains a mapping for extension "PNG", but the package also contains files with extension "png" (word/media/image3.png) and docx4j is not able to determine the content type if the capitalization of the extension is not exactly the same as in the mapping file. I think the mapping should be case insensitive, I think that specification says it.

Now I am not able to create such a file again with Word, but definitely such a document can be produced by Word and it is a document with just text and images, so I consider this to be quite a severe issue that would be nice to have fixed soon;-).

Best regards,
Jiri

[jason]

Done; see http://dev.plutext.org/trac/docx4j/changeset/1355

Do you think the uppercase extensions could have been introduced into your Word docx, by inserting an image which in the filesystem had an uppercase extension?

cheers .. Jason

[jban]

Thank you very much for prompt fix!

I think I have pasted the image from clipboard... I tried to reproduce it again by doing this and also inserted image with uppercase extension, but it did not happen again.

Best regards,
Jiri