Package org.apache.tools.zip
Class ExtraFieldUtils
- java.lang.Object
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- org.apache.tools.zip.ExtraFieldUtils
 
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 public class ExtraFieldUtils extends java.lang.ObjectZipExtraField related methods
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Nested Class SummaryNested Classes Modifier and Type Class Description static classExtraFieldUtils.UnparseableExtraField"enum" for the possible actions to take if the extra field cannot be parsed.
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Constructor SummaryConstructors Constructor Description ExtraFieldUtils()
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Method SummaryModifier and Type Method Description static ZipExtraFieldcreateExtraField(ZipShort headerId)Create an instance of the appropriate ExtraField, falls back toUnrecognizedExtraField.static byte[]mergeCentralDirectoryData(ZipExtraField[] data)Merges the central directory fields of the given ZipExtraFields.static byte[]mergeLocalFileDataData(ZipExtraField[] data)Merges the local file data fields of the given ZipExtraFields.static ZipExtraField[]parse(byte[] data)Split the array into ExtraFields and populate them with the given data as local file data, throwing an exception if the data cannot be parsed.static ZipExtraField[]parse(byte[] data, boolean local)Split the array into ExtraFields and populate them with the given data, throwing an exception if the data cannot be parsed.static ZipExtraField[]parse(byte[] data, boolean local, ExtraFieldUtils.UnparseableExtraField onUnparseableData)Split the array into ExtraFields and populate them with the given data.static voidregister(java.lang.Class<?> c)Register a ZipExtraField implementation.
 
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Method Detail- 
registerpublic static void register(java.lang.Class<?> c) Register a ZipExtraField implementation.The given class must have a no-arg constructor and implement the ZipExtraField interface.- Parameters:
- c- the class to register
- Since:
- 1.1
 
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createExtraFieldpublic static ZipExtraField createExtraField(ZipShort headerId) throws java.lang.InstantiationException, java.lang.IllegalAccessException Create an instance of the appropriate ExtraField, falls back toUnrecognizedExtraField.- Parameters:
- headerId- the header identifier
- Returns:
- an instance of the appropriate ExtraField
- Throws:
- java.lang.InstantiationException- if unable to instantiate the class
- java.lang.IllegalAccessException- if not allowed to instantiate the class
- Since:
- 1.1
 
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parsepublic static ZipExtraField[] parse(byte[] data) throws java.util.zip.ZipException Split the array into ExtraFields and populate them with the given data as local file data, throwing an exception if the data cannot be parsed.- Parameters:
- data- an array of bytes as it appears in local file data
- Returns:
- an array of ExtraFields
- Throws:
- java.util.zip.ZipException- on error
 
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parsepublic static ZipExtraField[] parse(byte[] data, boolean local) throws java.util.zip.ZipException Split the array into ExtraFields and populate them with the given data, throwing an exception if the data cannot be parsed.- Parameters:
- data- an array of bytes
- local- whether data originates from the local file data or the central directory
- Returns:
- an array of ExtraFields
- Throws:
- java.util.zip.ZipException- on error
- Since:
- 1.1
 
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parsepublic static ZipExtraField[] parse(byte[] data, boolean local, ExtraFieldUtils.UnparseableExtraField onUnparseableData) throws java.util.zip.ZipException Split the array into ExtraFields and populate them with the given data.- Parameters:
- data- an array of bytes
- local- whether data originates from the local file data or the central directory
- onUnparseableData- what to do if the extra field data cannot be parsed.
- Returns:
- an array of ExtraFields
- Throws:
- java.util.zip.ZipException- on error
- Since:
- Ant 1.8.1
 
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mergeLocalFileDataDatapublic static byte[] mergeLocalFileDataData(ZipExtraField[] data) Merges the local file data fields of the given ZipExtraFields.- Parameters:
- data- an array of ExtraFiles
- Returns:
- an array of bytes
- Since:
- 1.1
 
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mergeCentralDirectoryDatapublic static byte[] mergeCentralDirectoryData(ZipExtraField[] data) Merges the central directory fields of the given ZipExtraFields.- Parameters:
- data- an array of ExtraFields
- Returns:
- an array of bytes
- Since:
- 1.1
 
 
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