| Summary: | Nested inline elements with text-align attribute cause an Exception | ||
|---|---|---|---|
| Product: | Fop - Now in Jira | Reporter: | Kostis Kapelonis <kkapelon> |
| Component: | Assignee: | fop-dev | |
| Status: | NEW --- | ||
| Severity: | normal | CC: | taffy-tyler6464 |
| Priority: | P3 | ||
| Version: | 0.95 | ||
| Target Milestone: | --- | ||
| Hardware: | PC | ||
| OS: | Windows XP | ||
| Attachments: |
Sample FO file that triggers the bug
A cut down example |
||
I have tried to reproduce the problem, I haven't got the same exception, but a NullpointerException...
Listening for transport dt_socket at address: 5005
24-Feb-2010 10:39:35 org.apache.fop.apps.FopFactoryConfigurator configure
INFO: Default page-height set to: 11in
24-Feb-2010 10:39:35 org.apache.fop.apps.FopFactoryConfigurator configure
INFO: Default page-width set to: 8.26in
24-Feb-2010 10:39:35 org.apache.fop.events.LoggingEventListener processEvent
WARNING: The following feature isn't implemented by Apache FOP, yet: table-layout="auto" (on fo:table) (See position 18:15)
24-Feb-2010 10:39:35 org.apache.fop.events.LoggingEventListener processEvent
WARNING: The following feature isn't implemented by Apache FOP, yet: table-layout="auto" (on fo:table) (See position 25:21)
24-Feb-2010 10:39:35 org.apache.fop.cli.Main startFOP
SEVERE: Exception
java.lang.NullPointerException
at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:302)
at org.apache.fop.cli.InputHandler.renderTo(InputHandler.java:130)
at org.apache.fop.cli.Main.startFOP(Main.java:174)
at org.apache.fop.cli.Main.main(Main.java:205)
---------
java.lang.NullPointerException
at org.apache.fop.layoutmgr.inline.TextLayoutManager.addALetterSpaceTo(TextLayoutManager.java:793)
at org.apache.fop.layoutmgr.inline.InlineStackingLayoutManager.addALetterSpaceTo(InlineStackingLayoutManager.java:226)
at org.apache.fop.layoutmgr.inline.InlineStackingLayoutManager.addALetterSpaceTo(InlineStackingLayoutManager.java:226)
at org.apache.fop.layoutmgr.InlineKnuthSequence.addALetterSpace(InlineKnuthSequence.java:133)
at org.apache.fop.layoutmgr.InlineKnuthSequence.appendSequence(InlineKnuthSequence.java:76)
at org.apache.fop.layoutmgr.KnuthSequence.appendSequenceOrClose(KnuthSequence.java:93)
at org.apache.fop.layoutmgr.inline.InlineLayoutManager.getNextKnuthElements(InlineLayoutManager.java:328)
at org.apache.fop.layoutmgr.inline.InlineLayoutManager.getNextKnuthElements(InlineLayoutManager.java:309)
at org.apache.fop.layoutmgr.inline.InlineLayoutManager.getNextKnuthElements(InlineLayoutManager.java:309)
at org.apache.fop.layoutmgr.inline.LineLayoutManager.collectInlineKnuthElements(LineLayoutManager.java:639)
at org.apache.fop.layoutmgr.inline.LineLayoutManager.getNextKnuthElements(LineLayoutManager.java:579)
at org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextChildElements(BlockStackingLayoutManager.java:571)
at org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextChildElements(BlockStackingLayoutManager.java:552)
at org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextKnuthElements(BlockStackingLayoutManager.java:280)
at org.apache.fop.layoutmgr.BlockLayoutManager.getNextKnuthElements(BlockLayoutManager.java:123)
at org.apache.fop.layoutmgr.BlockLayoutManager.getNextKnuthElements(BlockLayoutManager.java:115)
at org.apache.fop.layoutmgr.table.TableCellLayoutManager.getNextKnuthElements(TableCellLayoutManager.java:154)
at org.apache.fop.layoutmgr.table.RowGroupLayoutManager.createElementsForRowGroup(RowGroupLayoutManager.java:118)
at org.apache.fop.layoutmgr.table.RowGroupLayoutManager.getNextKnuthElements(RowGroupLayoutManager.java:61)
at org.apache.fop.layoutmgr.table.TableContentLayoutManager.getKnuthElementsForRowIterator(TableContentLayoutManager.java:220)
at org.apache.fop.layoutmgr.table.TableContentLayoutManager.getNextKnuthElements(TableContentLayoutManager.java:173)
at org.apache.fop.layoutmgr.table.TableLayoutManager.getNextKnuthElements(TableLayoutManager.java:249)
at org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextChildElements(BlockStackingLayoutManager.java:571)
at org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextChildElements(BlockStackingLayoutManager.java:552)
at org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextKnuthElements(BlockStackingLayoutManager.java:280)
at org.apache.fop.layoutmgr.BlockLayoutManager.getNextKnuthElements(BlockLayoutManager.java:123)
at org.apache.fop.layoutmgr.BlockLayoutManager.getNextKnuthElements(BlockLayoutManager.java:115)
at org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextChildElements(BlockStackingLayoutManager.java:571)
at org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextChildElements(BlockStackingLayoutManager.java:552)
at org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextKnuthElements(BlockStackingLayoutManager.java:280)
at org.apache.fop.layoutmgr.BlockLayoutManager.getNextKnuthElements(BlockLayoutManager.java:123)
at org.apache.fop.layoutmgr.BlockLayoutManager.getNextKnuthElements(BlockLayoutManager.java:115)
at org.apache.fop.layoutmgr.table.TableCellLayoutManager.getNextKnuthElements(TableCellLayoutManager.java:154)
at org.apache.fop.layoutmgr.table.RowGroupLayoutManager.createElementsForRowGroup(RowGroupLayoutManager.java:118)
at org.apache.fop.layoutmgr.table.RowGroupLayoutManager.getNextKnuthElements(RowGroupLayoutManager.java:61)
at org.apache.fop.layoutmgr.table.TableContentLayoutManager.getKnuthElementsForRowIterator(TableContentLayoutManager.java:220)
at org.apache.fop.layoutmgr.table.TableContentLayoutManager.getNextKnuthElements(TableContentLayoutManager.java:173)
at org.apache.fop.layoutmgr.table.TableLayoutManager.getNextKnuthElements(TableLayoutManager.java:249)
at org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextChildElements(BlockStackingLayoutManager.java:571)
at org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextChildElements(BlockStackingLayoutManager.java:552)
at org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextKnuthElements(BlockStackingLayoutManager.java:280)
at org.apache.fop.layoutmgr.BlockLayoutManager.getNextKnuthElements(BlockLayoutManager.java:123)
at org.apache.fop.layoutmgr.BlockLayoutManager.getNextKnuthElements(BlockLayoutManager.java:115)
at org.apache.fop.layoutmgr.FlowLayoutManager.getNextChildElements(FlowLayoutManager.java:199)
at org.apache.fop.layoutmgr.FlowLayoutManager.addChildElements(FlowLayoutManager.java:140)
at org.apache.fop.layoutmgr.FlowLayoutManager.addChildElements(FlowLayoutManager.java:129)
at org.apache.fop.layoutmgr.FlowLayoutManager.getNextKnuthElements(FlowLayoutManager.java:70)
at org.apache.fop.layoutmgr.PageBreaker.getNextKnuthElements(PageBreaker.java:216)
at org.apache.fop.layoutmgr.AbstractBreaker.getNextBlockList(AbstractBreaker.java:692)
at org.apache.fop.layoutmgr.PageBreaker.getNextBlockList(PageBreaker.java:149)
at org.apache.fop.layoutmgr.PageBreaker.getNextBlockList(PageBreaker.java:132)
at org.apache.fop.layoutmgr.AbstractBreaker.doLayout(AbstractBreaker.java:337)
at org.apache.fop.layoutmgr.PageBreaker.doLayout(PageBreaker.java:85)
at org.apache.fop.layoutmgr.PageSequenceLayoutManager.activateLayout(PageSequenceLayoutManager.java:107)
at org.apache.fop.area.AreaTreeHandler.endPageSequence(AreaTreeHandler.java:238)
at org.apache.fop.fo.pagination.PageSequence.endOfNode(PageSequence.java:120)
at org.apache.fop.fo.FOTreeBuilder$MainFOHandler.endElement(FOTreeBuilder.java:349)
at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:177)
at org.apache.xalan.transformer.TransformerIdentityImpl.endElement(TransformerIdentityImpl.java:1101)
at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
at org.apache.xerces.xinclude.XIncludeHandler.endElement(Unknown Source)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
at org.apache.xalan.transformer.TransformerIdentityImpl.transform(TransformerIdentityImpl.java:484)
at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:299)
at org.apache.fop.cli.InputHandler.renderTo(InputHandler.java:130)
at org.apache.fop.cli.Main.startFOP(Main.java:174)
at org.apache.fop.cli.Main.main(Main.java:205)
I have used Fop Trunk version to get that above NullpointerException The bug seems to be caused by the no-break space (u+a0) between the first fo:inline elemet of <fo:inline> </fo:inline>World</fo:inline></fo:inline> changing it to a regular space (u+20) resulted in a successful render. Replace <fo:inline> </fo:inline> by <fo:inline> </fo:inline> and <fo:inline> </fo:inline> to demonstrate this. However,this should still be recognised as a bug in fop. I can verify that this bug still exists in the trunk, with a different exception stack ... Caused by: java.lang.NullPointerException at org.apache.fop.layoutmgr.inline.TextLayoutManager.addALetterSpaceTo(TextLayoutManager.java:851) at org.apache.fop.layoutmgr.inline.InlineStackingLayoutManager.addALetterSpaceTo(InlineStackingLayoutManager.java:224) at org.apache.fop.layoutmgr.inline.InlineStackingLayoutManager.addALetterSpaceTo(InlineStackingLayoutManager.java:224) at org.apache.fop.layoutmgr.InlineKnuthSequence.addALetterSpace(InlineKnuthSequence.java:133) at org.apache.fop.layoutmgr.InlineKnuthSequence.appendSequence(InlineKnuthSequence.java:76) at org.apache.fop.layoutmgr.KnuthSequence.appendSequenceOrClose(KnuthSequence.java:93) at org.apache.fop.layoutmgr.inline.InlineLayoutManager.getNextKnuthElements(InlineLayoutManager.java:330) ... Thank you very much for you quick reply! I have to add however that with FOP 0.95 the exception goes away 1. if text-align attribute is removed OR 2. if the non-breakspace is replaced with a space (as Peter Hancock said) OR 3. if the inline element that contains the non-breaking space is removed but the non-breaking space itself stays OR 4. If a word is inserted before the non-breaking space OR 5. If a word is inserted after the non-breaking space So it seems to me that the combination of span + contents of non-breaking space and nothing else is the problem. As for text-align I have no clue! Created attachment 25051 [details]
A cut down example
resetting P2 open bugs to P3 pending further review |
Created attachment 25049 [details] Sample FO file that triggers the bug I am using FOP 0.95 (latest stable at the time of writing) and attached FO file. I convert it to PDF with fop -fo exception.fo sample.PDF Expected output: A PDF file Actual output The following exception: java.lang.ClassCastException: org.apache.fop.layoutmgr.LeafPosition cannot be cast to org.apache.fop.layoutmgr.NonLeafPosition at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:217) at org.apache.fop.cli.InputHandler.renderTo(InputHandler.java:125) at org.apache.fop.cli.Main.startFOP(Main.java:166) at org.apache.fop.cli.Main.main(Main.java:197) If I remove either the inline elements or the text-align attribute the exception goes away