https://issues.apache.org/bugzilla/show_bug.cgi?id=48534

           Summary: java.lang.StringIndexOutOfBoundsException
           Product: Fop
           Version: all
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: normal
          Priority: P2
         Component: fo tree
        AssignedTo: fop-dev@xmlgraphics.apache.org
        ReportedBy: antti.kara...@napa.fi


both fop 0.95 and trunk version fail the attached fo file with 

C:\Temp\cr14230>\programs\Java\fop-trunk\fop.bat -fo testi.fo -pdf testix.pdf
13.1.2010 14:12:06 org.apache.fop.cli.Main startFOP
SEVERE: Exception
java.lang.StringIndexOutOfBoundsException: String index out of range: 0
        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)
Caused by: java.lang.StringIndexOutOfBoundsException: String index out of
range: 0
        at java.lang.String.charAt(String.java:686)
        at
org.apache.fop.fo.properties.CharacterProperty$Maker.make(CharacterProperty.java:44)
        at
org.apache.fop.fo.PropertyList.convertAttributeToProperty(PropertyList.java:412)
        at
org.apache.fop.fo.PropertyList.addAttributesToList(PropertyList.java:319)
        at org.apache.fop.fo.FObj.processNode(FObj.java:119)
        at
org.apache.fop.fo.FOTreeBuilder$MainFOHandler.startElement(FOTreeBuilder.java:282)
        at org.apache.fop.fo.FOTreeBuilder.startElement(FOTreeBuilder.java:171)
        at
org.apache.xalan.transformer.TransformerIdentityImpl.startElement(TransformerIdentityImpl.java:1072)
        at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown
Source)
        at org.apache.xerces.xinclude.XIncludeHandler.startElement(Unknown
Source)
        at
org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(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)
        ... 3 more

---------

java.lang.StringIndexOutOfBoundsException: String index out of range: 0
        at java.lang.String.charAt(String.java:686)
        at
org.apache.fop.fo.properties.CharacterProperty$Maker.make(CharacterProperty.java:44)
        at
org.apache.fop.fo.PropertyList.convertAttributeToProperty(PropertyList.java:412)
        at
org.apache.fop.fo.PropertyList.addAttributesToList(PropertyList.java:319)
        at org.apache.fop.fo.FObj.processNode(FObj.java:119)
        at
org.apache.fop.fo.FOTreeBuilder$MainFOHandler.startElement(FOTreeBuilder.java:282)
        at org.apache.fop.fo.FOTreeBuilder.startElement(FOTreeBuilder.java:171)
        at
org.apache.xalan.transformer.TransformerIdentityImpl.startElement(TransformerIdentityImpl.java:1072)
        at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown
Source)
        at org.apache.xerces.xinclude.XIncludeHandler.startElement(Unknown
Source)
        at
org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(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)

(stack trace from trunk version as of 13. Jan 2010).

It is likely something wrong with the given xsl-fo. It validates fine with
XMLasdf Spy, but I would guess it's something e.g. in attribute values that
goes undetected by it.

Even though the error is likely in the xsl-fo given, IMO fop should fail with
some sensible error that might give a clue as to where the error lies.

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