Package org.apache.tools.zip
Class GeneralPurposeBit
- java.lang.Object
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- org.apache.tools.zip.GeneralPurposeBit
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- All Implemented Interfaces:
java.lang.Cloneable
public final class GeneralPurposeBit extends java.lang.Object implements java.lang.CloneableParser/encoder for the "general purpose bit" field in ZIP's local file and central directory headers.- Since:
- Ant 1.9.0
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Field Summary
Fields Modifier and Type Field Description static intUFT8_NAMES_FLAGIndicates that filenames are written in utf-8.
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Constructor Summary
Constructors Constructor Description GeneralPurposeBit()
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.Objectclone()byte[]encode()Encodes the set bits in a form suitable for ZIP archives.voidencode(byte[] buf, int offset)Encodes the set bits in a form suitable for ZIP archives.booleanequals(java.lang.Object o)inthashCode()static GeneralPurposeBitparse(byte[] data, int offset)Parses the supported flags from the given archive data.voiduseDataDescriptor(boolean b)whether the current entry will use the data descriptor to store CRC and size informationvoiduseEncryption(boolean b)whether the current entry will be encryptedbooleanusesDataDescriptor()whether the current entry uses the data descriptor to store CRC and size informationbooleanusesEncryption()whether the current entry is encryptedbooleanusesStrongEncryption()whether the current entry is encrypted using strong encryptionvoiduseStrongEncryption(boolean b)whether the current entry will be encrypted using strong encryptionbooleanusesUTF8ForNames()whether the current entry uses UTF8 for file name and comment.voiduseUTF8ForNames(boolean b)whether the current entry will use UTF8 for file name and comment.
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Field Detail
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UFT8_NAMES_FLAG
public static final int UFT8_NAMES_FLAG
Indicates that filenames are written in utf-8.The only reason this is public is that
ZipOutputStream.EFS_FLAGwas public in several versions of Apache Ant and we needed a substitute for it.- See Also:
- Constant Field Values
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Method Detail
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usesUTF8ForNames
public boolean usesUTF8ForNames()
whether the current entry uses UTF8 for file name and comment.- Returns:
- boolean
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useUTF8ForNames
public void useUTF8ForNames(boolean b)
whether the current entry will use UTF8 for file name and comment.- Parameters:
b- boolean
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usesDataDescriptor
public boolean usesDataDescriptor()
whether the current entry uses the data descriptor to store CRC and size information- Returns:
- boolean
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useDataDescriptor
public void useDataDescriptor(boolean b)
whether the current entry will use the data descriptor to store CRC and size information- Parameters:
b- boolean
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usesEncryption
public boolean usesEncryption()
whether the current entry is encrypted- Returns:
- boolean
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useEncryption
public void useEncryption(boolean b)
whether the current entry will be encrypted- Parameters:
b- boolean
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usesStrongEncryption
public boolean usesStrongEncryption()
whether the current entry is encrypted using strong encryption- Returns:
- boolean
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useStrongEncryption
public void useStrongEncryption(boolean b)
whether the current entry will be encrypted using strong encryption- Parameters:
b- boolean
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encode
public byte[] encode()
Encodes the set bits in a form suitable for ZIP archives.- Returns:
- byte[]
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encode
public void encode(byte[] buf, int offset)Encodes the set bits in a form suitable for ZIP archives.- Parameters:
buf- the output bufferoffset- The offset within the output buffer of the first byte to be written. must be non-negative and no larger thanbuf.length-2
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parse
public static GeneralPurposeBit parse(byte[] data, int offset)
Parses the supported flags from the given archive data.- Parameters:
data- local file header or a central directory entry.offset- offset at which the general purpose bit starts- Returns:
- GeneralPurposeBit
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hashCode
public int hashCode()
- Overrides:
hashCodein classjava.lang.Object
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equals
public boolean equals(java.lang.Object o)
- Overrides:
equalsin classjava.lang.Object
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clone
public java.lang.Object clone()
- Overrides:
clonein classjava.lang.Object
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