Package org.apache.xmlgraphics.ps.dsc
Class DefaultNestedDocumentHandler
- java.lang.Object
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- org.apache.xmlgraphics.ps.dsc.DefaultNestedDocumentHandler
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- All Implemented Interfaces:
DSCListener
,DSCParserConstants
,NestedDocumentHandler
public class DefaultNestedDocumentHandler extends java.lang.Object implements DSCParserConstants, NestedDocumentHandler, DSCListener
DSCListener
implementation which automatically skips data between Begin/EndDocument and Begin/EndData.
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Field Summary
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Fields inherited from interface org.apache.xmlgraphics.ps.dsc.DSCParserConstants
COMMENT, DSC_COMMENT, EOF, HEADER_COMMENT, LINE
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Constructor Summary
Constructors Constructor Description DefaultNestedDocumentHandler(PSGenerator gen)
Creates a new instance.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
handle(DSCEvent event, DSCParser parser)
Handle a DSC event.void
processEvent(DSCEvent event, DSCParser parser)
Called for each DSC event.
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Constructor Detail
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DefaultNestedDocumentHandler
public DefaultNestedDocumentHandler(PSGenerator gen)
Creates a new instance.- Parameters:
gen
- PSGenerator to pass through the skipped content
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Method Detail
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handle
public void handle(DSCEvent event, DSCParser parser) throws java.io.IOException, DSCException
Handle a DSC event. Implementations may issue additional calls to the DSC parser and may modify its state. When returning from the call, state information such as filters should be restored.- Specified by:
handle
in interfaceNestedDocumentHandler
- Parameters:
event
- the DSC event to handleparser
- the DSC parser to work with- Throws:
java.io.IOException
- In case of an I/O errorDSCException
- In case of a violation of the DSC spec
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processEvent
public void processEvent(DSCEvent event, DSCParser parser) throws java.io.IOException, DSCException
Called for each DSC event. You can call methods on the DSC parser to skip comments, for example. But implementations need to be good citizens and take into account that multiple listeners can be active at the same time and that they might interfere with other listeners. When returning from the call, state information such as filters should be restored.- Specified by:
processEvent
in interfaceDSCListener
- Parameters:
event
- the DSC eventparser
- the DSC parser- Throws:
java.io.IOException
- if an I/O error occursDSCException
- if a DSC-specific error occurs
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